diff options
Diffstat (limited to 'lib/libtsan/sanitizer_common/sanitizer_common_interceptors.inc')
| -rw-r--r-- | lib/libtsan/sanitizer_common/sanitizer_common_interceptors.inc | 10590 |
1 files changed, 10590 insertions, 0 deletions
diff --git a/lib/libtsan/sanitizer_common/sanitizer_common_interceptors.inc b/lib/libtsan/sanitizer_common/sanitizer_common_interceptors.inc new file mode 100644 index 0000000000..24a8a2d4dc --- /dev/null +++ b/lib/libtsan/sanitizer_common/sanitizer_common_interceptors.inc @@ -0,0 +1,10590 @@ +//===-- sanitizer_common_interceptors.inc -----------------------*- C++ -*-===// +// +// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. +// See https://llvm.org/LICENSE.txt for license information. +// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception +// +//===----------------------------------------------------------------------===// +// +// Common function interceptors for tools like AddressSanitizer, +// ThreadSanitizer, MemorySanitizer, etc. +// +// This file should be included into the tool's interceptor file, +// which has to define its own macros: +// COMMON_INTERCEPTOR_ENTER +// COMMON_INTERCEPTOR_ENTER_NOIGNORE +// COMMON_INTERCEPTOR_READ_RANGE +// COMMON_INTERCEPTOR_WRITE_RANGE +// COMMON_INTERCEPTOR_INITIALIZE_RANGE +// COMMON_INTERCEPTOR_DIR_ACQUIRE +// COMMON_INTERCEPTOR_FD_ACQUIRE +// COMMON_INTERCEPTOR_FD_RELEASE +// COMMON_INTERCEPTOR_FD_ACCESS +// COMMON_INTERCEPTOR_SET_THREAD_NAME +// COMMON_INTERCEPTOR_DLOPEN +// COMMON_INTERCEPTOR_ON_EXIT +// COMMON_INTERCEPTOR_SET_PTHREAD_NAME +// COMMON_INTERCEPTOR_HANDLE_RECVMSG +// COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED +// COMMON_INTERCEPTOR_MMAP_IMPL +// COMMON_INTERCEPTOR_MUNMAP_IMPL +// COMMON_INTERCEPTOR_COPY_STRING +// COMMON_INTERCEPTOR_STRNDUP_IMPL +// COMMON_INTERCEPTOR_STRERROR +//===----------------------------------------------------------------------===// + +#include <stdarg.h> + +#include "interception/interception.h" +#include "sanitizer_addrhashmap.h" +#include "sanitizer_dl.h" +#include "sanitizer_errno.h" +#include "sanitizer_placement_new.h" +#include "sanitizer_platform_interceptors.h" +#include "sanitizer_platform_limits_posix.h" +#include "sanitizer_symbolizer.h" +#include "sanitizer_tls_get_addr.h" + +#if SANITIZER_INTERCEPTOR_HOOKS +#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...) f(__VA_ARGS__); +#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...) \ + SANITIZER_INTERFACE_WEAK_DEF(void, f, __VA_ARGS__) {} +#else +#define DECLARE_WEAK_INTERCEPTOR_HOOK(f, ...) +#define CALL_WEAK_INTERCEPTOR_HOOK(f, ...) + +#endif // SANITIZER_INTERCEPTOR_HOOKS + +#if SANITIZER_WINDOWS && !defined(va_copy) +#define va_copy(dst, src) ((dst) = (src)) +#endif // _WIN32 + +#if SANITIZER_FREEBSD +#define pthread_setname_np pthread_set_name_np +#define inet_aton __inet_aton +#define inet_pton __inet_pton +#define iconv __bsd_iconv +#endif + +#if SANITIZER_NETBSD +#define clock_getres __clock_getres50 +#define clock_gettime __clock_gettime50 +#define clock_settime __clock_settime50 +#define ctime __ctime50 +#define ctime_r __ctime_r50 +#define devname __devname50 +#define fgetpos __fgetpos50 +#define fsetpos __fsetpos50 +#define fstatvfs __fstatvfs90 +#define fstatvfs1 __fstatvfs190 +#define fts_children __fts_children60 +#define fts_close __fts_close60 +#define fts_open __fts_open60 +#define fts_read __fts_read60 +#define fts_set __fts_set60 +#define getitimer __getitimer50 +#define getmntinfo __getmntinfo90 +#define getpwent __getpwent50 +#define getpwnam __getpwnam50 +#define getpwnam_r __getpwnam_r50 +#define getpwuid __getpwuid50 +#define getpwuid_r __getpwuid_r50 +#define getutent __getutent50 +#define getutxent __getutxent50 +#define getutxid __getutxid50 +#define getutxline __getutxline50 +#define getvfsstat __getvfsstat90 +#define pututxline __pututxline50 +#define glob __glob30 +#define gmtime __gmtime50 +#define gmtime_r __gmtime_r50 +#define localtime __locatime50 +#define localtime_r __localtime_r50 +#define mktime __mktime50 +#define lstat __lstat50 +#define opendir __opendir30 +#define readdir __readdir30 +#define readdir_r __readdir_r30 +#define scandir __scandir30 +#define setitimer __setitimer50 +#define setlocale __setlocale50 +#define shmctl __shmctl50 +#define sigaltstack __sigaltstack14 +#define sigemptyset __sigemptyset14 +#define sigfillset __sigfillset14 +#define sigpending __sigpending14 +#define sigprocmask __sigprocmask14 +#define sigtimedwait __sigtimedwait50 +#define stat __stat50 +#define statvfs __statvfs90 +#define statvfs1 __statvfs190 +#define time __time50 +#define times __times13 +#define unvis __unvis50 +#define wait3 __wait350 +#define wait4 __wait450 +extern const unsigned short *_ctype_tab_; +extern const short *_toupper_tab_; +extern const short *_tolower_tab_; +#endif + +#if SANITIZER_LINUX && SANITIZER_SPARC32 +// On 32-bit Linux/sparc64, double and long double are identical and glibc +// uses a __nldbl_ (no long double) prefix for various stdio functions. +# define __isoc23_fscanf __nldbl___isoc23_fscanf +# define __isoc23_scanf __nldbl___isoc23_scanf +# define __isoc23_sscanf __nldbl___isoc23_sscanf +# define __isoc23_vfscanf __nldbl___isoc23_vfscanf +# define __isoc23_vscanf __nldbl___isoc23_vscanf +# define __isoc23_vsscanf __nldbl___isoc23_vsscanf +# define __isoc99_fscanf __nldbl___isoc99_fscanf +# define __isoc99_scanf __nldbl___isoc99_scanf +# define __isoc99_sscanf __nldbl___isoc99_sscanf +# define __isoc99_vfscanf __nldbl___isoc99_vfscanf +# define __isoc99_vscanf __nldbl___isoc99_vscanf +# define __isoc99_vsscanf __nldbl___isoc99_vsscanf +# define asprintf __nldbl_asprintf +# define fprintf __nldbl_fprintf +# define fscanf __nldbl_fscanf +# define printf __nldbl_printf +# define scanf __nldbl_scanf +# define snprintf __nldbl_snprintf +# define sprintf __nldbl_sprintf +# define sscanf __nldbl_sscanf +# define vasprintf __nldbl_vasprintf +# define vfprintf __nldbl_vfprintf +# define vfscanf __nldbl_vfscanf +# define vprintf __nldbl_vprintf +# define vscanf __nldbl_vscanf +# define vsnprintf __nldbl_vsnprintf +# define vsprintf __nldbl_vsprintf +# define vsscanf __nldbl_vsscanf +#endif + +#if SANITIZER_MUSL && \ + (defined(__i386__) || defined(__arm__) || SANITIZER_MIPS32 || SANITIZER_PPC32) +// musl 1.2.0 on existing 32-bit architectures uses new symbol names for the +// time-related functions that take 64-bit time_t values. See +// https://musl.libc.org/time64.html +#define adjtime __adjtime64 +#define adjtimex __adjtimex_time64 +#define aio_suspend __aio_suspend_time64 +#define clock_adjtime __clock_adjtime64 +#define clock_getres __clock_getres_time64 +#define clock_gettime __clock_gettime64 +#define clock_nanosleep __clock_nanosleep_time64 +#define clock_settime __clock_settime64 +#define cnd_timedwait __cnd_timedwait_time64 +#define ctime __ctime64 +#define ctime_r __ctime64_r +#define difftime __difftime64 +#define dlsym __dlsym_time64 +#define fstatat __fstatat_time64 +#define fstat __fstat_time64 +#define ftime __ftime64 +#define futimens __futimens_time64 +#define futimesat __futimesat_time64 +#define futimes __futimes_time64 +#define getitimer __getitimer_time64 +#define getrusage __getrusage_time64 +#define gettimeofday __gettimeofday_time64 +#define gmtime __gmtime64 +#define gmtime_r __gmtime64_r +#define localtime __localtime64 +#define localtime_r __localtime64_r +#define lstat __lstat_time64 +#define lutimes __lutimes_time64 +#define mktime __mktime64 +#define mq_timedreceive __mq_timedreceive_time64 +#define mq_timedsend __mq_timedsend_time64 +#define mtx_timedlock __mtx_timedlock_time64 +#define nanosleep __nanosleep_time64 +#define ppoll __ppoll_time64 +#define pselect __pselect_time64 +#define pthread_cond_timedwait __pthread_cond_timedwait_time64 +#define pthread_mutex_timedlock __pthread_mutex_timedlock_time64 +#define pthread_rwlock_timedrdlock __pthread_rwlock_timedrdlock_time64 +#define pthread_rwlock_timedwrlock __pthread_rwlock_timedwrlock_time64 +#define pthread_timedjoin_np __pthread_timedjoin_np_time64 +#define recvmmsg __recvmmsg_time64 +#define sched_rr_get_interval __sched_rr_get_interval_time64 +#define select __select_time64 +#define semtimedop __semtimedop_time64 +#define sem_timedwait __sem_timedwait_time64 +#define setitimer __setitimer_time64 +#define settimeofday __settimeofday_time64 +#define sigtimedwait __sigtimedwait_time64 +#define stat __stat_time64 +#define stime __stime64 +#define thrd_sleep __thrd_sleep_time64 +#define timegm __timegm_time64 +#define timerfd_gettime __timerfd_gettime64 +#define timerfd_settime __timerfd_settime64 +#define timer_gettime __timer_gettime64 +#define timer_settime __timer_settime64 +#define timespec_get __timespec_get_time64 +#define time __time64 +#define utimensat __utimensat_time64 +#define utimes __utimes_time64 +#define utime __utime64 +#define wait3 __wait3_time64 +#define wait4 __wait4_time64 +#endif + +#ifndef COMMON_INTERCEPTOR_INITIALIZE_RANGE +#define COMMON_INTERCEPTOR_INITIALIZE_RANGE(p, size) {} +#endif + +#ifndef COMMON_INTERCEPTOR_UNPOISON_PARAM +#define COMMON_INTERCEPTOR_UNPOISON_PARAM(count) {} +#endif + +#ifndef COMMON_INTERCEPTOR_FD_ACCESS +#define COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd) {} +#endif + +#ifndef COMMON_INTERCEPTOR_HANDLE_RECVMSG +#define COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg) ((void)(msg)) +#endif + +#ifndef COMMON_INTERCEPTOR_FILE_OPEN +#define COMMON_INTERCEPTOR_FILE_OPEN(ctx, file, path) {} +#endif + +#ifndef COMMON_INTERCEPTOR_FILE_CLOSE +#define COMMON_INTERCEPTOR_FILE_CLOSE(ctx, file) {} +#endif + +#ifndef COMMON_INTERCEPTOR_LIBRARY_LOADED +#define COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, handle) {} +#endif + +#ifndef COMMON_INTERCEPTOR_LIBRARY_UNLOADED +#define COMMON_INTERCEPTOR_LIBRARY_UNLOADED() {} +#endif + +#ifndef COMMON_INTERCEPTOR_ENTER_NOIGNORE +#define COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, ...) \ + COMMON_INTERCEPTOR_ENTER(ctx, __VA_ARGS__) +#endif + +#ifndef COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED +#define COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED (0) +#endif + +#define COMMON_INTERCEPTOR_READ_STRING(ctx, s, n) \ + COMMON_INTERCEPTOR_READ_RANGE((ctx), (s), \ + common_flags()->strict_string_checks ? (internal_strlen(s)) + 1 : (n) ) + +#ifndef COMMON_INTERCEPTOR_DLOPEN +#define COMMON_INTERCEPTOR_DLOPEN(filename, flag) \ + ({ CheckNoDeepBind(filename, flag); REAL(dlopen)(filename, flag); }) +#endif + +#ifndef COMMON_INTERCEPTOR_GET_TLS_RANGE +#define COMMON_INTERCEPTOR_GET_TLS_RANGE(begin, end) *begin = *end = 0; +#endif + +#ifndef COMMON_INTERCEPTOR_ACQUIRE +#define COMMON_INTERCEPTOR_ACQUIRE(ctx, u) {} +#endif + +#ifndef COMMON_INTERCEPTOR_RELEASE +#define COMMON_INTERCEPTOR_RELEASE(ctx, u) {} +#endif + +#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_START +#define COMMON_INTERCEPTOR_USER_CALLBACK_START() {} +#endif + +#ifndef COMMON_INTERCEPTOR_USER_CALLBACK_END +#define COMMON_INTERCEPTOR_USER_CALLBACK_END() {} +#endif + +#ifdef SANITIZER_NLDBL_VERSION +#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \ + COMMON_INTERCEPT_FUNCTION_VER(fn, SANITIZER_NLDBL_VERSION) +#else +#define COMMON_INTERCEPT_FUNCTION_LDBL(fn) \ + COMMON_INTERCEPT_FUNCTION(fn) +#endif + +#if SANITIZER_GLIBC +// If we could not find the versioned symbol, fall back to an unversioned +// lookup. This is needed to work around a GLibc bug that causes dlsym +// with RTLD_NEXT to return the oldest versioned symbol. +// See https://sourceware.org/bugzilla/show_bug.cgi?id=14932. +// For certain symbols (e.g. regexec) we have to perform a versioned lookup, +// but that versioned symbol will only exist for architectures where the +// oldest Glibc version pre-dates support for that architecture. +// For example, regexec@GLIBC_2.3.4 exists on x86_64, but not RISC-V. +// See also https://gcc.gnu.org/bugzilla/show_bug.cgi?id=98920. +#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \ + COMMON_INTERCEPT_FUNCTION_VER_UNVERSIONED_FALLBACK(fn, ver) +#else +#define COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(fn, ver) \ + COMMON_INTERCEPT_FUNCTION(fn) +#endif + +#ifndef COMMON_INTERCEPTOR_MMAP_IMPL +#define COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, \ + off) \ + { return REAL(mmap)(addr, sz, prot, flags, fd, off); } +#endif + +#ifndef COMMON_INTERCEPTOR_MUNMAP_IMPL +#define COMMON_INTERCEPTOR_MUNMAP_IMPL(ctx, addr, sz) \ + { return REAL(munmap)(addr, sz); } +#endif + +#ifndef COMMON_INTERCEPTOR_COPY_STRING +#define COMMON_INTERCEPTOR_COPY_STRING(ctx, to, from, size) {} +#endif + +#ifndef COMMON_INTERCEPTOR_STRNDUP_IMPL +#define COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size) \ + COMMON_INTERCEPTOR_ENTER(ctx, strndup, s, size); \ + uptr copy_length = internal_strnlen(s, size); \ + char *new_mem = (char *)WRAP(malloc)(copy_length + 1); \ + if (common_flags()->intercept_strndup) { \ + COMMON_INTERCEPTOR_READ_STRING(ctx, s, Min<uptr>(size, copy_length + 1)); \ + } \ + if (new_mem) { \ + COMMON_INTERCEPTOR_COPY_STRING(ctx, new_mem, s, copy_length); \ + internal_memcpy(new_mem, s, copy_length); \ + new_mem[copy_length] = '\0'; \ + } \ + return new_mem; +#endif + +#ifndef COMMON_INTERCEPTOR_STRERROR +#define COMMON_INTERCEPTOR_STRERROR() {} +#endif + +struct FileMetadata { + // For open_memstream(). + char **addr; + SIZE_T *size; +}; + +struct CommonInterceptorMetadata { + enum { + CIMT_INVALID = 0, + CIMT_FILE + } type; + union { + FileMetadata file; + }; +}; + +#if SI_POSIX +typedef AddrHashMap<CommonInterceptorMetadata, 31051> MetadataHashMap; + +static MetadataHashMap *interceptor_metadata_map; + +UNUSED static void SetInterceptorMetadata(__sanitizer_FILE *addr, + const FileMetadata &file) { + MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr); + CHECK(h.created()); + h->type = CommonInterceptorMetadata::CIMT_FILE; + h->file = file; +} + +UNUSED static const FileMetadata *GetInterceptorMetadata( + __sanitizer_FILE *addr) { + MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, + /* remove */ false, + /* create */ false); + if (addr && h.exists()) { + CHECK(!h.created()); + CHECK(h->type == CommonInterceptorMetadata::CIMT_FILE); + return &h->file; + } else { + return 0; + } +} + +UNUSED static void DeleteInterceptorMetadata(void *addr) { + MetadataHashMap::Handle h(interceptor_metadata_map, (uptr)addr, true); + CHECK(h.exists()); +} +#endif // SI_POSIX + +#if SANITIZER_INTERCEPT_STRLEN +INTERCEPTOR(SIZE_T, strlen, const char *s) { + // Sometimes strlen is called prior to InitializeCommonInterceptors, + // in which case the REAL(strlen) typically used in + // COMMON_INTERCEPTOR_ENTER will fail. We use internal_strlen here + // to handle that. + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_strlen(s); + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strlen, s); + SIZE_T result = REAL(strlen)(s); + if (common_flags()->intercept_strlen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, result + 1); + return result; +} +#define INIT_STRLEN COMMON_INTERCEPT_FUNCTION(strlen) +#else +#define INIT_STRLEN +#endif + +#if SANITIZER_INTERCEPT_STRNLEN +INTERCEPTOR(SIZE_T, strnlen, const char *s, SIZE_T maxlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strnlen, s, maxlen); + SIZE_T length = REAL(strnlen)(s, maxlen); + if (common_flags()->intercept_strlen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, Min(length + 1, maxlen)); + return length; +} +#define INIT_STRNLEN COMMON_INTERCEPT_FUNCTION(strnlen) +#else +#define INIT_STRNLEN +#endif + +#if SANITIZER_INTERCEPT_STRNDUP +INTERCEPTOR(char*, strndup, const char *s, usize size) { + void *ctx; + COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size); +} +#define INIT_STRNDUP COMMON_INTERCEPT_FUNCTION(strndup) +#else +#define INIT_STRNDUP +#endif // SANITIZER_INTERCEPT_STRNDUP + +#if SANITIZER_INTERCEPT___STRNDUP +INTERCEPTOR(char*, __strndup, const char *s, usize size) { + void *ctx; + COMMON_INTERCEPTOR_STRNDUP_IMPL(ctx, s, size); +} +#define INIT___STRNDUP COMMON_INTERCEPT_FUNCTION(__strndup) +#else +#define INIT___STRNDUP +#endif // SANITIZER_INTERCEPT___STRNDUP + +#if SANITIZER_INTERCEPT_TEXTDOMAIN +INTERCEPTOR(char*, textdomain, const char *domainname) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, textdomain, domainname); + if (domainname) COMMON_INTERCEPTOR_READ_STRING(ctx, domainname, 0); + char *domain = REAL(textdomain)(domainname); + if (domain) { + COMMON_INTERCEPTOR_INITIALIZE_RANGE(domain, internal_strlen(domain) + 1); + } + return domain; +} +#define INIT_TEXTDOMAIN COMMON_INTERCEPT_FUNCTION(textdomain) +#else +#define INIT_TEXTDOMAIN +#endif + +#if SANITIZER_INTERCEPT_STRCMP || SANITIZER_INTERCEPT_MEMCMP +static inline int CharCmpX(unsigned char c1, unsigned char c2) { + return (c1 == c2) ? 0 : (c1 < c2) ? -1 : 1; +} +#endif + +#if SANITIZER_INTERCEPT_STRCMP +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, uptr called_pc, + const char *s1, const char *s2, int result) + +INTERCEPTOR(int, strcmp, const char *s1, const char *s2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strcmp, s1, s2); + unsigned char c1, c2; + uptr i; + for (i = 0;; i++) { + c1 = (unsigned char)s1[i]; + c2 = (unsigned char)s2[i]; + if (c1 != c2 || c1 == '\0') break; + } + if (common_flags()->intercept_strcmp) { + COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1); + COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1); + } + int result = CharCmpX(c1, c2); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcmp, GET_CALLER_PC(), s1, + s2, result); + return result; +} + +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, uptr called_pc, + const char *s1, const char *s2, usize n, + int result) + +INTERCEPTOR(int, strncmp, const char *s1, const char *s2, usize size) { + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_strncmp(s1, s2, size); + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strncmp, s1, s2, size); + unsigned char c1 = 0, c2 = 0; + usize i; + for (i = 0; i < size; i++) { + c1 = (unsigned char)s1[i]; + c2 = (unsigned char)s2[i]; + if (c1 != c2 || c1 == '\0') break; + } + usize i1 = i; + usize i2 = i; + if (common_flags()->strict_string_checks) { + for (; i1 < size && s1[i1]; i1++) {} + for (; i2 < size && s2[i2]; i2++) {} + } + COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size)); + COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size)); + int result = CharCmpX(c1, c2); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncmp, GET_CALLER_PC(), s1, + s2, size, result); + return result; +} + +#define INIT_STRCMP COMMON_INTERCEPT_FUNCTION(strcmp) +#define INIT_STRNCMP COMMON_INTERCEPT_FUNCTION(strncmp) +#else +#define INIT_STRCMP +#define INIT_STRNCMP +#endif + +#if SANITIZER_INTERCEPT_STRCASECMP +static inline int CharCaseCmp(unsigned char c1, unsigned char c2) { + int c1_low = ToLower(c1); + int c2_low = ToLower(c2); + return c1_low - c2_low; +} + +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, uptr called_pc, + const char *s1, const char *s2, int result) + +INTERCEPTOR(int, strcasecmp, const char *s1, const char *s2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strcasecmp, s1, s2); + unsigned char c1 = 0, c2 = 0; + uptr i; + for (i = 0;; i++) { + c1 = (unsigned char)s1[i]; + c2 = (unsigned char)s2[i]; + if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; + } + COMMON_INTERCEPTOR_READ_STRING(ctx, s1, i + 1); + COMMON_INTERCEPTOR_READ_STRING(ctx, s2, i + 1); + int result = CharCaseCmp(c1, c2); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasecmp, GET_CALLER_PC(), + s1, s2, result); + return result; +} + +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, uptr called_pc, + const char *s1, const char *s2, usize size, + int result) + +INTERCEPTOR(int, strncasecmp, const char *s1, const char *s2, SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strncasecmp, s1, s2, size); + unsigned char c1 = 0, c2 = 0; + usize i; + for (i = 0; i < size; i++) { + c1 = (unsigned char)s1[i]; + c2 = (unsigned char)s2[i]; + if (CharCaseCmp(c1, c2) != 0 || c1 == '\0') break; + } + usize i1 = i; + usize i2 = i; + if (common_flags()->strict_string_checks) { + for (; i1 < size && s1[i1]; i1++) {} + for (; i2 < size && s2[i2]; i2++) {} + } + COMMON_INTERCEPTOR_READ_RANGE((ctx), (s1), Min(i1 + 1, size)); + COMMON_INTERCEPTOR_READ_RANGE((ctx), (s2), Min(i2 + 1, size)); + int result = CharCaseCmp(c1, c2); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strncasecmp, GET_CALLER_PC(), + s1, s2, size, result); + return result; +} + +#define INIT_STRCASECMP COMMON_INTERCEPT_FUNCTION(strcasecmp) +#define INIT_STRNCASECMP COMMON_INTERCEPT_FUNCTION(strncasecmp) +#else +#define INIT_STRCASECMP +#define INIT_STRNCASECMP +#endif + +#if SANITIZER_INTERCEPT_STRSTR || SANITIZER_INTERCEPT_STRCASESTR +static inline void StrstrCheck(void *ctx, char *r, const char *s1, + const char *s2) { + uptr len1 = internal_strlen(s1); + uptr len2 = internal_strlen(s2); + COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r ? r - s1 + len2 : len1 + 1); + COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2 + 1); +} +#endif + +#if SANITIZER_INTERCEPT_STRSTR + +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, uptr called_pc, + const char *s1, const char *s2, char *result) + +INTERCEPTOR(char*, strstr, const char *s1, const char *s2) { + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_strstr(s1, s2); + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strstr, s1, s2); + char *r = REAL(strstr)(s1, s2); + if (common_flags()->intercept_strstr) + StrstrCheck(ctx, r, s1, s2); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strstr, GET_CALLER_PC(), s1, + s2, r); + return r; +} + +#define INIT_STRSTR COMMON_INTERCEPT_FUNCTION(strstr); +#else +#define INIT_STRSTR +#endif + +#if SANITIZER_INTERCEPT_STRCASESTR + +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, uptr called_pc, + const char *s1, const char *s2, char *result) + +INTERCEPTOR(char*, strcasestr, const char *s1, const char *s2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strcasestr, s1, s2); + char *r = REAL(strcasestr)(s1, s2); + if (common_flags()->intercept_strstr) + StrstrCheck(ctx, r, s1, s2); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_strcasestr, GET_CALLER_PC(), + s1, s2, r); + return r; +} + +#define INIT_STRCASESTR COMMON_INTERCEPT_FUNCTION(strcasestr); +#else +#define INIT_STRCASESTR +#endif + +#if SANITIZER_INTERCEPT_STRTOK + +INTERCEPTOR(char*, strtok, char *str, const char *delimiters) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strtok, str, delimiters); + if (!common_flags()->intercept_strtok) { + return REAL(strtok)(str, delimiters); + } + if (common_flags()->strict_string_checks) { + // If strict_string_checks is enabled, we check the whole first argument + // string on the first call (strtok saves this string in a static buffer + // for subsequent calls). We do not need to check strtok's result. + // As the delimiters can change, we check them every call. + if (str != nullptr) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1); + } + COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, + internal_strlen(delimiters) + 1); + return REAL(strtok)(str, delimiters); + } else { + // However, when strict_string_checks is disabled we cannot check the + // whole string on the first call. Instead, we check the result string + // which is guaranteed to be a NULL-terminated substring of the first + // argument. We also conservatively check one character of str and the + // delimiters. + if (str != nullptr) { + COMMON_INTERCEPTOR_READ_STRING(ctx, str, 1); + } + COMMON_INTERCEPTOR_READ_RANGE(ctx, delimiters, 1); + char *result = REAL(strtok)(str, delimiters); + if (result != nullptr) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, result, internal_strlen(result) + 1); + } else if (str != nullptr) { + // No delimiter were found, it's safe to assume that the entire str was + // scanned. + COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1); + } + return result; + } +} + +#define INIT_STRTOK COMMON_INTERCEPT_FUNCTION(strtok) +#else +#define INIT_STRTOK +#endif + +#if SANITIZER_INTERCEPT_MEMMEM +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, uptr called_pc, + const void *s1, SIZE_T len1, const void *s2, + SIZE_T len2, void *result) + +INTERCEPTOR(void*, memmem, const void *s1, SIZE_T len1, const void *s2, + SIZE_T len2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, memmem, s1, len1, s2, len2); + void *r = REAL(memmem)(s1, len1, s2, len2); + if (common_flags()->intercept_memmem) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, len1); + COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, len2); + } + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memmem, GET_CALLER_PC(), + s1, len1, s2, len2, r); + return r; +} + +#define INIT_MEMMEM COMMON_INTERCEPT_FUNCTION(memmem); +#else +#define INIT_MEMMEM +#endif // SANITIZER_INTERCEPT_MEMMEM + +#if SANITIZER_INTERCEPT_STRCHR +INTERCEPTOR(char*, strchr, const char *s, int c) { + void *ctx; + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_strchr(s, c); + COMMON_INTERCEPTOR_ENTER(ctx, strchr, s, c); + char *result = REAL(strchr)(s, c); + if (common_flags()->intercept_strchr) { + // Keep strlen as macro argument, as macro may ignore it. + COMMON_INTERCEPTOR_READ_STRING(ctx, s, + (result ? result - s : internal_strlen(s)) + 1); + } + return result; +} +#define INIT_STRCHR COMMON_INTERCEPT_FUNCTION(strchr) +#else +#define INIT_STRCHR +#endif + +#if SANITIZER_INTERCEPT_STRCHRNUL +INTERCEPTOR(char*, strchrnul, const char *s, int c) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strchrnul, s, c); + char *result = REAL(strchrnul)(s, c); + uptr len = result - s + 1; + if (common_flags()->intercept_strchr) + COMMON_INTERCEPTOR_READ_STRING(ctx, s, len); + return result; +} +#define INIT_STRCHRNUL COMMON_INTERCEPT_FUNCTION(strchrnul) +#else +#define INIT_STRCHRNUL +#endif + +#if SANITIZER_INTERCEPT_STRRCHR +INTERCEPTOR(char*, strrchr, const char *s, int c) { + void *ctx; + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_strrchr(s, c); + COMMON_INTERCEPTOR_ENTER(ctx, strrchr, s, c); + if (common_flags()->intercept_strchr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); + return REAL(strrchr)(s, c); +} +#define INIT_STRRCHR COMMON_INTERCEPT_FUNCTION(strrchr) +#else +#define INIT_STRRCHR +#endif + +#if SANITIZER_INTERCEPT_STRSPN +INTERCEPTOR(SIZE_T, strspn, const char *s1, const char *s2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strspn, s1, s2); + SIZE_T r = REAL(strspn)(s1, s2); + if (common_flags()->intercept_strspn) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1); + COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1); + } + return r; +} + +INTERCEPTOR(SIZE_T, strcspn, const char *s1, const char *s2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strcspn, s1, s2); + SIZE_T r = REAL(strcspn)(s1, s2); + if (common_flags()->intercept_strspn) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1); + COMMON_INTERCEPTOR_READ_STRING(ctx, s1, r + 1); + } + return r; +} + +#define INIT_STRSPN \ + COMMON_INTERCEPT_FUNCTION(strspn); \ + COMMON_INTERCEPT_FUNCTION(strcspn); +#else +#define INIT_STRSPN +#endif + +#if SANITIZER_INTERCEPT_STRPBRK +INTERCEPTOR(char *, strpbrk, const char *s1, const char *s2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strpbrk, s1, s2); + char *r = REAL(strpbrk)(s1, s2); + if (common_flags()->intercept_strpbrk) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, internal_strlen(s2) + 1); + COMMON_INTERCEPTOR_READ_STRING(ctx, s1, + r ? r - s1 + 1 : internal_strlen(s1) + 1); + } + return r; +} + +#define INIT_STRPBRK COMMON_INTERCEPT_FUNCTION(strpbrk); +#else +#define INIT_STRPBRK +#endif + +#if SANITIZER_INTERCEPT_MEMCMP +DECLARE_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, uptr called_pc, + const void *s1, const void *s2, usize n, + int result) + +// Common code for `memcmp` and `bcmp`. +int MemcmpInterceptorCommon(void *ctx, + int (*real_fn)(const void *, const void *, usize), + const void *a1, const void *a2, usize size) { + if (common_flags()->intercept_memcmp) { + if (common_flags()->strict_memcmp) { + // Check the entire regions even if the first bytes of the buffers are + // different. + COMMON_INTERCEPTOR_READ_RANGE(ctx, a1, size); + COMMON_INTERCEPTOR_READ_RANGE(ctx, a2, size); + // Fallthrough to REAL(memcmp) below. + } else { + unsigned char c1 = 0, c2 = 0; + const unsigned char *s1 = (const unsigned char*)a1; + const unsigned char *s2 = (const unsigned char*)a2; + usize i; + for (i = 0; i < size; i++) { + c1 = s1[i]; + c2 = s2[i]; + if (c1 != c2) break; + } + COMMON_INTERCEPTOR_READ_RANGE(ctx, s1, Min(i + 1, size)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, s2, Min(i + 1, size)); + int r = CharCmpX(c1, c2); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), + a1, a2, size, r); + return r; + } + } + int result = real_fn(a1, a2, size); + CALL_WEAK_INTERCEPTOR_HOOK(__sanitizer_weak_hook_memcmp, GET_CALLER_PC(), a1, + a2, size, result); + return result; +} + +INTERCEPTOR(int, memcmp, const void *a1, const void *a2, usize size) { + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_memcmp(a1, a2, size); + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, memcmp, a1, a2, size); + return MemcmpInterceptorCommon(ctx, REAL(memcmp), a1, a2, size); +} + +#define INIT_MEMCMP COMMON_INTERCEPT_FUNCTION(memcmp) +#else +#define INIT_MEMCMP +#endif + +#if SANITIZER_INTERCEPT_BCMP +INTERCEPTOR(int, bcmp, const void *a1, const void *a2, usize size) { + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_memcmp(a1, a2, size); + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, bcmp, a1, a2, size); + return MemcmpInterceptorCommon(ctx, REAL(bcmp), a1, a2, size); +} + +#define INIT_BCMP COMMON_INTERCEPT_FUNCTION(bcmp) +#else +#define INIT_BCMP +#endif + +#if SANITIZER_INTERCEPT_MEMCHR +INTERCEPTOR(void*, memchr, const void *s, int c, SIZE_T n) { + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_memchr(s, c, n); + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, memchr, s, c, n); +#if SANITIZER_WINDOWS + void *res; + if (REAL(memchr)) { + res = REAL(memchr)(s, c, n); + } else { + res = internal_memchr(s, c, n); + } +#else + void *res = REAL(memchr)(s, c, n); +#endif + uptr len = res ? (char *)res - (const char *)s + 1 : n; + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, len); + return res; +} + +#define INIT_MEMCHR COMMON_INTERCEPT_FUNCTION(memchr) +#else +#define INIT_MEMCHR +#endif + +#if SANITIZER_INTERCEPT_MEMRCHR +INTERCEPTOR(void*, memrchr, const void *s, int c, SIZE_T n) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, memrchr, s, c, n); + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, n); + return REAL(memrchr)(s, c, n); +} + +#define INIT_MEMRCHR COMMON_INTERCEPT_FUNCTION(memrchr) +#else +#define INIT_MEMRCHR +#endif + +#if SANITIZER_INTERCEPT_FREXP +INTERCEPTOR(double, frexp, double x, int *exp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, frexp, x, exp); + // Assuming frexp() always writes to |exp|. + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); + double res = REAL(frexp)(x, exp); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp)); + return res; +} + +#define INIT_FREXP COMMON_INTERCEPT_FUNCTION(frexp); +#else +#define INIT_FREXP +#endif // SANITIZER_INTERCEPT_FREXP + +#if SANITIZER_INTERCEPT_FREXPF_FREXPL +INTERCEPTOR(float, frexpf, float x, int *exp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, frexpf, x, exp); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); + float res = REAL(frexpf)(x, exp); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp)); + return res; +} + +INTERCEPTOR(long double, frexpl, long double x, int *exp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, frexpl, x, exp); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, exp, sizeof(*exp)); + long double res = REAL(frexpl)(x, exp); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(exp, sizeof(*exp)); + return res; +} + +#define INIT_FREXPF_FREXPL \ + COMMON_INTERCEPT_FUNCTION(frexpf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(frexpl) +#else +#define INIT_FREXPF_FREXPL +#endif // SANITIZER_INTERCEPT_FREXPF_FREXPL + +#if SI_POSIX +static void write_iovec(void *ctx, struct __sanitizer_iovec *iovec, + SIZE_T iovlen, SIZE_T maxlen) { + for (SIZE_T i = 0; i < iovlen && maxlen; ++i) { + SSIZE_T sz = Min(iovec[i].iov_len, maxlen); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec[i].iov_base, sz); + maxlen -= sz; + } +} + +static void read_iovec(void *ctx, struct __sanitizer_iovec *iovec, + SIZE_T iovlen, SIZE_T maxlen) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec) * iovlen); + for (SIZE_T i = 0; i < iovlen && maxlen; ++i) { + SSIZE_T sz = Min(iovec[i].iov_len, maxlen); + COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec[i].iov_base, sz); + maxlen -= sz; + } +} +#endif + +#if SANITIZER_INTERCEPT_READ +INTERCEPTOR(SSIZE_T, read, int fd, void *ptr, SIZE_T count) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, read, fd, ptr, count); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(read)(fd, ptr, count); + if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +#define INIT_READ COMMON_INTERCEPT_FUNCTION(read) +#else +#define INIT_READ +#endif + +#if SANITIZER_INTERCEPT_FREAD +INTERCEPTOR(SIZE_T, fread, void *ptr, SIZE_T size, SIZE_T nmemb, void *file) { + // libc file streams can call user-supplied functions, see fopencookie. + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fread, ptr, size, nmemb, file); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(fread)(ptr, size, nmemb, file); + if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res * size); + return res; +} +#define INIT_FREAD COMMON_INTERCEPT_FUNCTION(fread) +#else +#define INIT_FREAD +#endif + +#if SANITIZER_INTERCEPT_PREAD +INTERCEPTOR(SSIZE_T, pread, int fd, void *ptr, SIZE_T count, OFF_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pread, fd, ptr, count, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pread)(fd, ptr, count, offset); + if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +#define INIT_PREAD COMMON_INTERCEPT_FUNCTION(pread) +#else +#define INIT_PREAD +#endif + +#if SANITIZER_INTERCEPT_PREAD64 +INTERCEPTOR(SSIZE_T, pread64, int fd, void *ptr, SIZE_T count, OFF64_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pread64, fd, ptr, count, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pread64)(fd, ptr, count, offset); + if (res > 0) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, res); + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +#define INIT_PREAD64 COMMON_INTERCEPT_FUNCTION(pread64) +#else +#define INIT_PREAD64 +#endif + +#if SANITIZER_INTERCEPT_READV +INTERCEPTOR_WITH_SUFFIX(SSIZE_T, readv, int fd, __sanitizer_iovec *iov, + int iovcnt) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, readv, fd, iov, iovcnt); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(readv)(fd, iov, iovcnt); + if (res > 0) write_iovec(ctx, iov, iovcnt, res); + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +#define INIT_READV COMMON_INTERCEPT_FUNCTION(readv) +#else +#define INIT_READV +#endif + +#if SANITIZER_INTERCEPT_PREADV +INTERCEPTOR(SSIZE_T, preadv, int fd, __sanitizer_iovec *iov, int iovcnt, + OFF_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, preadv, fd, iov, iovcnt, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(preadv)(fd, iov, iovcnt, offset); + if (res > 0) write_iovec(ctx, iov, iovcnt, res); + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +#define INIT_PREADV COMMON_INTERCEPT_FUNCTION(preadv) +#else +#define INIT_PREADV +#endif + +#if SANITIZER_INTERCEPT_PREADV64 +INTERCEPTOR(SSIZE_T, preadv64, int fd, __sanitizer_iovec *iov, int iovcnt, + OFF64_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, preadv64, fd, iov, iovcnt, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + SSIZE_T res = + COMMON_INTERCEPTOR_BLOCK_REAL(preadv64)(fd, iov, iovcnt, offset); + if (res > 0) write_iovec(ctx, iov, iovcnt, res); + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +#define INIT_PREADV64 COMMON_INTERCEPT_FUNCTION(preadv64) +#else +#define INIT_PREADV64 +#endif + +#if SANITIZER_INTERCEPT_WRITE +INTERCEPTOR(SSIZE_T, write, int fd, void *ptr, SIZE_T count) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, write, fd, ptr, count); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(write)(fd, ptr, count); + // FIXME: this check should be _before_ the call to + // COMMON_INTERCEPTOR_BLOCK_REAL(write), not after + if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); + return res; +} +#define INIT_WRITE COMMON_INTERCEPT_FUNCTION(write) +#else +#define INIT_WRITE +#endif + +#if SANITIZER_INTERCEPT_FWRITE +INTERCEPTOR(SIZE_T, fwrite, const void *p, usize size, usize nmemb, void *file) { + // libc file streams can call user-supplied functions, see fopencookie. + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fwrite, p, size, nmemb, file); + SIZE_T res = REAL(fwrite)(p, size, nmemb, file); + if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, p, res * size); + return res; +} +#define INIT_FWRITE COMMON_INTERCEPT_FUNCTION(fwrite) +#else +#define INIT_FWRITE +#endif + +#if SANITIZER_INTERCEPT_PWRITE +INTERCEPTOR(SSIZE_T, pwrite, int fd, void *ptr, SIZE_T count, OFF_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pwrite, fd, ptr, count, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwrite)(fd, ptr, count, offset); + if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); + return res; +} +#define INIT_PWRITE COMMON_INTERCEPT_FUNCTION(pwrite) +#else +#define INIT_PWRITE +#endif + +#if SANITIZER_INTERCEPT_PWRITE64 +INTERCEPTOR(SSIZE_T, pwrite64, int fd, void *ptr, OFF64_T count, + OFF64_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pwrite64, fd, ptr, count, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwrite64)(fd, ptr, count, offset); + if (res > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, ptr, res); + return res; +} +#define INIT_PWRITE64 COMMON_INTERCEPT_FUNCTION(pwrite64) +#else +#define INIT_PWRITE64 +#endif + +#if SANITIZER_INTERCEPT_WRITEV +INTERCEPTOR_WITH_SUFFIX(SSIZE_T, writev, int fd, __sanitizer_iovec *iov, + int iovcnt) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, writev, fd, iov, iovcnt); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(writev)(fd, iov, iovcnt); + if (res > 0) read_iovec(ctx, iov, iovcnt, res); + return res; +} +#define INIT_WRITEV COMMON_INTERCEPT_FUNCTION(writev) +#else +#define INIT_WRITEV +#endif + +#if SANITIZER_INTERCEPT_PWRITEV +INTERCEPTOR(SSIZE_T, pwritev, int fd, __sanitizer_iovec *iov, int iovcnt, + OFF_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pwritev, fd, iov, iovcnt, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(pwritev)(fd, iov, iovcnt, offset); + if (res > 0) read_iovec(ctx, iov, iovcnt, res); + return res; +} +#define INIT_PWRITEV COMMON_INTERCEPT_FUNCTION(pwritev) +#else +#define INIT_PWRITEV +#endif + +#if SANITIZER_INTERCEPT_PWRITEV64 +INTERCEPTOR(SSIZE_T, pwritev64, int fd, __sanitizer_iovec *iov, int iovcnt, + OFF64_T offset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pwritev64, fd, iov, iovcnt, offset); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + SSIZE_T res = + COMMON_INTERCEPTOR_BLOCK_REAL(pwritev64)(fd, iov, iovcnt, offset); + if (res > 0) read_iovec(ctx, iov, iovcnt, res); + return res; +} +#define INIT_PWRITEV64 COMMON_INTERCEPT_FUNCTION(pwritev64) +#else +#define INIT_PWRITEV64 +#endif + +#if SANITIZER_INTERCEPT_FGETS +INTERCEPTOR(char *, fgets, char *s, SIZE_T size, void *file) { + // libc file streams can call user-supplied functions, see fopencookie. + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgets, s, size, file); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(fgets)(s, size, file); + if (res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1); + return res; +} +#define INIT_FGETS COMMON_INTERCEPT_FUNCTION(fgets) +#else +#define INIT_FGETS +#endif + +#if SANITIZER_INTERCEPT_FPUTS +INTERCEPTOR_WITH_SUFFIX(int, fputs, char *s, void *file) { + // libc file streams can call user-supplied functions, see fopencookie. + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fputs, s, file); + if (!SANITIZER_APPLE || s) { // `fputs(NULL, file)` is supported on Darwin. + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); + } + return REAL(fputs)(s, file); +} +#define INIT_FPUTS COMMON_INTERCEPT_FUNCTION(fputs) +#else +#define INIT_FPUTS +#endif + +#if SANITIZER_INTERCEPT_PUTS +INTERCEPTOR(int, puts, char *s) { + // libc file streams can call user-supplied functions, see fopencookie. + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, puts, s); + if (!SANITIZER_APPLE || s) { // `puts(NULL)` is supported on Darwin. + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); + } + return REAL(puts)(s); +} +#define INIT_PUTS COMMON_INTERCEPT_FUNCTION(puts) +#else +#define INIT_PUTS +#endif + +#if SANITIZER_INTERCEPT_PRCTL +INTERCEPTOR(int, prctl, int option, unsigned long arg2, unsigned long arg3, + unsigned long arg4, unsigned long arg5) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, prctl, option, arg2, arg3, arg4, arg5); + static const int PR_SET_NAME = 15; + static const int PR_GET_NAME = 16; + static const int PR_SET_VMA = 0x53564d41; + static const int PR_SCHED_CORE = 62; + static const int PR_SCHED_CORE_GET = 0; + static const int PR_GET_PDEATHSIG = 2; + +# if !SANITIZER_ANDROID + static const int PR_SET_SECCOMP = 22; + static const int SECCOMP_MODE_FILTER = 2; +# endif + if (option == PR_SET_VMA && arg2 == 0UL) { + char *name = (char *)arg5; + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + } + int res = REAL(prctl)(option, arg2, arg3, arg4, arg5); + if (option == PR_SET_NAME) { + char buff[16]; + internal_strncpy(buff, (char *)arg2, 15); + buff[15] = 0; + COMMON_INTERCEPTOR_SET_THREAD_NAME(ctx, buff); + } else if (res == 0 && option == PR_GET_NAME) { + char *name = (char *)arg2; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); + } else if (res != -1 && option == PR_SCHED_CORE && + arg2 == PR_SCHED_CORE_GET) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64 *)(arg5), sizeof(u64)); + } else if (res != -1 && option == PR_GET_PDEATHSIG) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64 *)(arg2), sizeof(int)); +# if SANITIZER_GLIBC + } else if (res != -1 && option == PR_SET_SECCOMP && + arg2 == SECCOMP_MODE_FILTER) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (u64 *)(arg3), struct_sock_fprog_sz); +# endif + } + return res; +} +#define INIT_PRCTL COMMON_INTERCEPT_FUNCTION(prctl) +#else +#define INIT_PRCTL +#endif // SANITIZER_INTERCEPT_PRCTL + +#if SANITIZER_INTERCEPT_TIME +INTERCEPTOR(unsigned long, time, unsigned long *t) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, time, t); + unsigned long local_t; + unsigned long res = REAL(time)(&local_t); + if (t && res != (unsigned long)-1) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, t, sizeof(*t)); + *t = local_t; + } + return res; +} +#define INIT_TIME COMMON_INTERCEPT_FUNCTION(time); +#else +#define INIT_TIME +#endif // SANITIZER_INTERCEPT_TIME + +#if SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS +static void unpoison_tm(void *ctx, __sanitizer_tm *tm) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm)); +#if !SANITIZER_SOLARIS + if (tm->tm_zone) { + // Can not use COMMON_INTERCEPTOR_WRITE_RANGE here, because tm->tm_zone + // can point to shared memory and tsan would report a data race. + COMMON_INTERCEPTOR_INITIALIZE_RANGE(tm->tm_zone, + internal_strlen(tm->tm_zone) + 1); + } +#endif +} +INTERCEPTOR(__sanitizer_tm *, localtime, unsigned long *timep) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, localtime, timep); + __sanitizer_tm *res = REAL(localtime)(timep); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); + unpoison_tm(ctx, res); + } + return res; +} +INTERCEPTOR(__sanitizer_tm *, localtime_r, unsigned long *timep, void *result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, localtime_r, timep, result); + __sanitizer_tm *res = REAL(localtime_r)(timep, result); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); + unpoison_tm(ctx, res); + } + return res; +} +INTERCEPTOR(__sanitizer_tm *, gmtime, unsigned long *timep) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gmtime, timep); + __sanitizer_tm *res = REAL(gmtime)(timep); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); + unpoison_tm(ctx, res); + } + return res; +} +INTERCEPTOR(__sanitizer_tm *, gmtime_r, unsigned long *timep, void *result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gmtime_r, timep, result); + __sanitizer_tm *res = REAL(gmtime_r)(timep, result); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); + unpoison_tm(ctx, res); + } + return res; +} +INTERCEPTOR(char *, ctime, unsigned long *timep) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ctime, timep); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(ctime)(timep); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + } + return res; +} +INTERCEPTOR(char *, ctime_r, unsigned long *timep, char *result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ctime_r, timep, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(ctime_r)(timep, result); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, timep, sizeof(*timep)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + } + return res; +} +INTERCEPTOR(char *, asctime, __sanitizer_tm *tm) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, asctime, tm); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(asctime)(tm); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + } + return res; +} +INTERCEPTOR(char *, asctime_r, __sanitizer_tm *tm, char *result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, asctime_r, tm, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(asctime_r)(tm, result); + if (res) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, tm, sizeof(*tm)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + } + return res; +} +INTERCEPTOR(long, mktime, __sanitizer_tm *tm) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, mktime, tm); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_sec, sizeof(tm->tm_sec)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_min, sizeof(tm->tm_min)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_hour, sizeof(tm->tm_hour)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mday, sizeof(tm->tm_mday)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_mon, sizeof(tm->tm_mon)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_year, sizeof(tm->tm_year)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &tm->tm_isdst, sizeof(tm->tm_isdst)); + long res = REAL(mktime)(tm); + if (res != -1) unpoison_tm(ctx, tm); + return res; +} +#define INIT_LOCALTIME_AND_FRIENDS \ + COMMON_INTERCEPT_FUNCTION(localtime); \ + COMMON_INTERCEPT_FUNCTION(localtime_r); \ + COMMON_INTERCEPT_FUNCTION(gmtime); \ + COMMON_INTERCEPT_FUNCTION(gmtime_r); \ + COMMON_INTERCEPT_FUNCTION(ctime); \ + COMMON_INTERCEPT_FUNCTION(ctime_r); \ + COMMON_INTERCEPT_FUNCTION(asctime); \ + COMMON_INTERCEPT_FUNCTION(asctime_r); \ + COMMON_INTERCEPT_FUNCTION(mktime); +#else +#define INIT_LOCALTIME_AND_FRIENDS +#endif // SANITIZER_INTERCEPT_LOCALTIME_AND_FRIENDS + +#if SANITIZER_INTERCEPT_STRPTIME +INTERCEPTOR(char *, strptime, char *s, char *format, __sanitizer_tm *tm) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strptime, s, format, tm); + if (format) + COMMON_INTERCEPTOR_READ_RANGE(ctx, format, internal_strlen(format) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(strptime)(s, format, tm); + COMMON_INTERCEPTOR_READ_STRING(ctx, s, res ? res - s : 0); + if (res && tm) { + // Do not call unpoison_tm here, because strptime does not, in fact, + // initialize the entire struct tm. For example, tm_zone pointer is left + // uninitialized. + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tm, sizeof(*tm)); + } + return res; +} +#define INIT_STRPTIME COMMON_INTERCEPT_FUNCTION(strptime); +#else +#define INIT_STRPTIME +#endif + +#if SANITIZER_INTERCEPT_SCANF || SANITIZER_INTERCEPT_PRINTF +#include "sanitizer_common_interceptors_format.inc" + +#define FORMAT_INTERCEPTOR_IMPL(name, vname, ...) \ + { \ + void *ctx; \ + va_list ap; \ + va_start(ap, format); \ + COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__, ap); \ + int res = WRAP(vname)(__VA_ARGS__, ap); \ + va_end(ap); \ + return res; \ + } + +#endif + +#if SANITIZER_INTERCEPT_SCANF + +#define VSCANF_INTERCEPTOR_IMPL(vname, allowGnuMalloc, ...) \ + { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \ + va_list aq; \ + va_copy(aq, ap); \ + int res = REAL(vname)(__VA_ARGS__); \ + if (res > 0) \ + scanf_common(ctx, res, allowGnuMalloc, format, aq); \ + va_end(aq); \ + return res; \ + } + +INTERCEPTOR(int, vscanf, const char *format, va_list ap) +VSCANF_INTERCEPTOR_IMPL(vscanf, true, format, ap) + +INTERCEPTOR(int, vsscanf, const char *str, const char *format, va_list ap) +VSCANF_INTERCEPTOR_IMPL(vsscanf, true, str, format, ap) + +INTERCEPTOR(int, vfscanf, void *stream, const char *format, va_list ap) +VSCANF_INTERCEPTOR_IMPL(vfscanf, true, stream, format, ap) + +#if SANITIZER_INTERCEPT_ISOC99_SCANF +INTERCEPTOR(int, __isoc99_vscanf, const char *format, va_list ap) +VSCANF_INTERCEPTOR_IMPL(__isoc99_vscanf, false, format, ap) + +INTERCEPTOR(int, __isoc99_vsscanf, const char *str, const char *format, + va_list ap) +VSCANF_INTERCEPTOR_IMPL(__isoc99_vsscanf, false, str, format, ap) + +INTERCEPTOR(int, __isoc99_vfscanf, void *stream, const char *format, va_list ap) +VSCANF_INTERCEPTOR_IMPL(__isoc99_vfscanf, false, stream, format, ap) + +INTERCEPTOR(int, __isoc23_vscanf, const char *format, va_list ap) +VSCANF_INTERCEPTOR_IMPL(__isoc23_vscanf, false, format, ap) + +INTERCEPTOR(int, __isoc23_vsscanf, const char *str, const char *format, + va_list ap) +VSCANF_INTERCEPTOR_IMPL(__isoc23_vsscanf, false, str, format, ap) + +INTERCEPTOR(int, __isoc23_vfscanf, void *stream, const char *format, va_list ap) +VSCANF_INTERCEPTOR_IMPL(__isoc23_vfscanf, false, stream, format, ap) +#endif // SANITIZER_INTERCEPT_ISOC99_SCANF + +INTERCEPTOR(int, scanf, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(scanf, vscanf, format) + +INTERCEPTOR(int, fscanf, void *stream, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(fscanf, vfscanf, stream, format) + +INTERCEPTOR(int, sscanf, const char *str, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(sscanf, vsscanf, str, format) + +#if SANITIZER_INTERCEPT_ISOC99_SCANF +INTERCEPTOR(int, __isoc99_scanf, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc99_scanf, __isoc99_vscanf, format) + +INTERCEPTOR(int, __isoc99_fscanf, void *stream, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc99_fscanf, __isoc99_vfscanf, stream, format) + +INTERCEPTOR(int, __isoc99_sscanf, const char *str, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc99_sscanf, __isoc99_vsscanf, str, format) + +INTERCEPTOR(int, __isoc23_scanf, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc23_scanf, __isoc23_vscanf, format) + +INTERCEPTOR(int, __isoc23_fscanf, void *stream, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc23_fscanf, __isoc23_vfscanf, stream, format) + +INTERCEPTOR(int, __isoc23_sscanf, const char *str, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc23_sscanf, __isoc23_vsscanf, str, format) +#endif + +#endif + +#if SANITIZER_INTERCEPT_SCANF +#define INIT_SCANF \ + COMMON_INTERCEPT_FUNCTION_LDBL(scanf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(sscanf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(fscanf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vscanf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vsscanf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vfscanf); +#else +#define INIT_SCANF +#endif + +#if SANITIZER_INTERCEPT_ISOC99_SCANF +#define INIT_ISOC99_SCANF \ + COMMON_INTERCEPT_FUNCTION(__isoc99_scanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_sscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_fscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_vscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_vsscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_vfscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc23_scanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc23_sscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc23_fscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc23_vscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc23_vsscanf); \ + COMMON_INTERCEPT_FUNCTION(__isoc23_vfscanf); +#else +#define INIT_ISOC99_SCANF +#endif + +#if SANITIZER_INTERCEPT_PRINTF + +#define VPRINTF_INTERCEPTOR_ENTER(vname, ...) \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, vname, __VA_ARGS__); \ + va_list aq; \ + va_copy(aq, ap); + +#define VPRINTF_INTERCEPTOR_RETURN() \ + va_end(aq); + +#define VPRINTF_INTERCEPTOR_IMPL(vname, ...) \ + { \ + VPRINTF_INTERCEPTOR_ENTER(vname, __VA_ARGS__); \ + if (common_flags()->check_printf) \ + printf_common(ctx, format, aq); \ + int res = REAL(vname)(__VA_ARGS__); \ + VPRINTF_INTERCEPTOR_RETURN(); \ + return res; \ + } + +// FIXME: under ASan the REAL() call below may write to freed memory and +// corrupt its metadata. See +// https://github.com/google/sanitizers/issues/321. +#define VSPRINTF_INTERCEPTOR_IMPL(vname, str, ...) \ + { \ + VPRINTF_INTERCEPTOR_ENTER(vname, str, __VA_ARGS__) \ + if (common_flags()->check_printf) { \ + printf_common(ctx, format, aq); \ + } \ + int res = REAL(vname)(str, __VA_ARGS__); \ + if (res >= 0) { \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, res + 1); \ + } \ + VPRINTF_INTERCEPTOR_RETURN(); \ + return res; \ + } + +// FIXME: under ASan the REAL() call below may write to freed memory and +// corrupt its metadata. See +// https://github.com/google/sanitizers/issues/321. +#define VSNPRINTF_INTERCEPTOR_IMPL(vname, str, size, ...) \ + { \ + VPRINTF_INTERCEPTOR_ENTER(vname, str, size, __VA_ARGS__) \ + if (common_flags()->check_printf) { \ + printf_common(ctx, format, aq); \ + } \ + int res = REAL(vname)(str, size, __VA_ARGS__); \ + if (res >= 0) { \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, Min(size, (SIZE_T)(res + 1))); \ + } \ + VPRINTF_INTERCEPTOR_RETURN(); \ + return res; \ + } + +// FIXME: under ASan the REAL() call below may write to freed memory and +// corrupt its metadata. See +// https://github.com/google/sanitizers/issues/321. +#define VASPRINTF_INTERCEPTOR_IMPL(vname, strp, ...) \ + { \ + VPRINTF_INTERCEPTOR_ENTER(vname, strp, __VA_ARGS__) \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, strp, sizeof(char *)); \ + if (common_flags()->check_printf) { \ + printf_common(ctx, format, aq); \ + } \ + int res = REAL(vname)(strp, __VA_ARGS__); \ + if (res >= 0) { \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *strp, res + 1); \ + } \ + VPRINTF_INTERCEPTOR_RETURN(); \ + return res; \ + } + +INTERCEPTOR(int, vprintf, const char *format, va_list ap) +VPRINTF_INTERCEPTOR_IMPL(vprintf, format, ap) + +INTERCEPTOR(int, vfprintf, __sanitizer_FILE *stream, const char *format, + va_list ap) +VPRINTF_INTERCEPTOR_IMPL(vfprintf, stream, format, ap) + +INTERCEPTOR(int, vsnprintf, char *str, SIZE_T size, const char *format, + va_list ap) +VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap) + +#if SANITIZER_INTERCEPT___PRINTF_CHK +INTERCEPTOR(int, __vsnprintf_chk, char *str, SIZE_T size, int flag, + SIZE_T size_to, const char *format, va_list ap) +VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf, str, size, format, ap) +#endif + +#if SANITIZER_INTERCEPT_PRINTF_L +INTERCEPTOR(int, vsnprintf_l, char *str, SIZE_T size, void *loc, + const char *format, va_list ap) +VSNPRINTF_INTERCEPTOR_IMPL(vsnprintf_l, str, size, loc, format, ap) + +INTERCEPTOR(int, snprintf_l, char *str, SIZE_T size, void *loc, + const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(snprintf_l, vsnprintf_l, str, size, loc, format) +#endif // SANITIZER_INTERCEPT_PRINTF_L + +INTERCEPTOR(int, vsprintf, char *str, const char *format, va_list ap) +VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap) + +#if SANITIZER_INTERCEPT___PRINTF_CHK +INTERCEPTOR(int, __vsprintf_chk, char *str, int flag, SIZE_T size_to, + const char *format, va_list ap) +VSPRINTF_INTERCEPTOR_IMPL(vsprintf, str, format, ap) +#endif + +INTERCEPTOR(int, vasprintf, char **strp, const char *format, va_list ap) +VASPRINTF_INTERCEPTOR_IMPL(vasprintf, strp, format, ap) + +#if SANITIZER_INTERCEPT_ISOC99_PRINTF +INTERCEPTOR(int, __isoc99_vprintf, const char *format, va_list ap) +VPRINTF_INTERCEPTOR_IMPL(__isoc99_vprintf, format, ap) + +INTERCEPTOR(int, __isoc99_vfprintf, __sanitizer_FILE *stream, + const char *format, va_list ap) +VPRINTF_INTERCEPTOR_IMPL(__isoc99_vfprintf, stream, format, ap) + +INTERCEPTOR(int, __isoc99_vsnprintf, char *str, SIZE_T size, const char *format, + va_list ap) +VSNPRINTF_INTERCEPTOR_IMPL(__isoc99_vsnprintf, str, size, format, ap) + +INTERCEPTOR(int, __isoc99_vsprintf, char *str, const char *format, + va_list ap) +VSPRINTF_INTERCEPTOR_IMPL(__isoc99_vsprintf, str, format, + ap) + +#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF + +INTERCEPTOR(int, printf, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(printf, vprintf, format) + +INTERCEPTOR(int, fprintf, __sanitizer_FILE *stream, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(fprintf, vfprintf, stream, format) + +#if SANITIZER_INTERCEPT___PRINTF_CHK +INTERCEPTOR(int, __fprintf_chk, __sanitizer_FILE *stream, SIZE_T size, + const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__fprintf_chk, vfprintf, stream, format) +#endif + +INTERCEPTOR(int, sprintf, char *str, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(sprintf, vsprintf, str, format) + +#if SANITIZER_INTERCEPT___PRINTF_CHK +INTERCEPTOR(int, __sprintf_chk, char *str, int flag, SIZE_T size_to, + const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__sprintf_chk, vsprintf, str, format) +#endif + +INTERCEPTOR(int, snprintf, char *str, SIZE_T size, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(snprintf, vsnprintf, str, size, format) + +#if SANITIZER_INTERCEPT___PRINTF_CHK +INTERCEPTOR(int, __snprintf_chk, char *str, SIZE_T size, int flag, + SIZE_T size_to, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__snprintf_chk, vsnprintf, str, size, format) +#endif + +INTERCEPTOR(int, asprintf, char **strp, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(asprintf, vasprintf, strp, format) + +#if SANITIZER_INTERCEPT_ISOC99_PRINTF +INTERCEPTOR(int, __isoc99_printf, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc99_printf, __isoc99_vprintf, format) + +INTERCEPTOR(int, __isoc99_fprintf, __sanitizer_FILE *stream, const char *format, + ...) +FORMAT_INTERCEPTOR_IMPL(__isoc99_fprintf, __isoc99_vfprintf, stream, format) + +INTERCEPTOR(int, __isoc99_sprintf, char *str, const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc99_sprintf, __isoc99_vsprintf, str, format) + +INTERCEPTOR(int, __isoc99_snprintf, char *str, SIZE_T size, + const char *format, ...) +FORMAT_INTERCEPTOR_IMPL(__isoc99_snprintf, __isoc99_vsnprintf, str, size, + format) + +#endif // SANITIZER_INTERCEPT_ISOC99_PRINTF + +#endif // SANITIZER_INTERCEPT_PRINTF + +#if SANITIZER_INTERCEPT_PRINTF +#define INIT_PRINTF \ + COMMON_INTERCEPT_FUNCTION_LDBL(printf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(sprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(snprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(asprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(fprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vsprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vsnprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vasprintf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(vfprintf); +#else +#define INIT_PRINTF +#endif + +#if SANITIZER_INTERCEPT___PRINTF_CHK +#define INIT___PRINTF_CHK \ + COMMON_INTERCEPT_FUNCTION(__sprintf_chk); \ + COMMON_INTERCEPT_FUNCTION(__snprintf_chk); \ + COMMON_INTERCEPT_FUNCTION(__vsprintf_chk); \ + COMMON_INTERCEPT_FUNCTION(__vsnprintf_chk); \ + COMMON_INTERCEPT_FUNCTION(__fprintf_chk); +#else +#define INIT___PRINTF_CHK +#endif + +#if SANITIZER_INTERCEPT_PRINTF_L +#define INIT_PRINTF_L \ + COMMON_INTERCEPT_FUNCTION(snprintf_l); \ + COMMON_INTERCEPT_FUNCTION(vsnprintf_l); +#else +#define INIT_PRINTF_L +#endif + +#if SANITIZER_INTERCEPT_ISOC99_PRINTF +#define INIT_ISOC99_PRINTF \ + COMMON_INTERCEPT_FUNCTION(__isoc99_printf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_sprintf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_snprintf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_fprintf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_vprintf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_vsprintf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_vsnprintf); \ + COMMON_INTERCEPT_FUNCTION(__isoc99_vfprintf); +#else +#define INIT_ISOC99_PRINTF +#endif + +#if SANITIZER_INTERCEPT_IOCTL +#include "sanitizer_common_interceptors_ioctl.inc" +#include "sanitizer_interceptors_ioctl_netbsd.inc" +INTERCEPTOR(int, ioctl, int d, unsigned long request, ...) { + // We need a frame pointer, because we call into ioctl_common_[pre|post] which + // can trigger a report and we need to be able to unwind through this + // function. On Mac in debug mode we might not have a frame pointer, because + // ioctl_common_[pre|post] doesn't get inlined here. + ENABLE_FRAME_POINTER; + + void *ctx; + va_list ap; + va_start(ap, request); + void *arg = va_arg(ap, void *); + va_end(ap); + COMMON_INTERCEPTOR_ENTER(ctx, ioctl, d, request, arg); + + CHECK(ioctl_initialized); + + // Note: TSan does not use common flags, and they are zero-initialized. + // This effectively disables ioctl handling in TSan. + if (!common_flags()->handle_ioctl) return REAL(ioctl)(d, request, arg); + + // Although request is unsigned long, the rest of the interceptor uses it + // as just "unsigned" to save space, because we know that all values fit in + // "unsigned" - they are compile-time constants. + + const ioctl_desc *desc = ioctl_lookup(request); + ioctl_desc decoded_desc; + if (!desc) { + VPrintf(2, "Decoding unknown ioctl 0x%lx\n", request); + if (!ioctl_decode(request, &decoded_desc)) + Printf("WARNING: failed decoding unknown ioctl 0x%lx\n", request); + else + desc = &decoded_desc; + } + + if (desc) ioctl_common_pre(ctx, desc, d, request, arg); + int res = REAL(ioctl)(d, request, arg); + // FIXME: some ioctls have different return values for success and failure. + if (desc && res != -1) ioctl_common_post(ctx, desc, res, d, request, arg); + return res; +} +#define INIT_IOCTL \ + ioctl_init(); \ + COMMON_INTERCEPT_FUNCTION(ioctl); +#else +#define INIT_IOCTL +#endif + +#if SANITIZER_POSIX +UNUSED static void unpoison_passwd(void *ctx, __sanitizer_passwd *pwd) { + if (pwd) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd, sizeof(*pwd)); + if (pwd->pw_name) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_name, + internal_strlen(pwd->pw_name) + 1); + if (pwd->pw_passwd) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_passwd, + internal_strlen(pwd->pw_passwd) + 1); +#if !SANITIZER_ANDROID + if (pwd->pw_gecos) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_gecos, + internal_strlen(pwd->pw_gecos) + 1); +#endif +#if SANITIZER_APPLE || SANITIZER_FREEBSD || SANITIZER_NETBSD + if (pwd->pw_class) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_class, + internal_strlen(pwd->pw_class) + 1); +#endif + if (pwd->pw_dir) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_dir, + internal_strlen(pwd->pw_dir) + 1); + if (pwd->pw_shell) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwd->pw_shell, + internal_strlen(pwd->pw_shell) + 1); + } +} + +UNUSED static void unpoison_group(void *ctx, __sanitizer_group *grp) { + if (grp) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp, sizeof(*grp)); + if (grp->gr_name) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_name, + internal_strlen(grp->gr_name) + 1); + if (grp->gr_passwd) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_passwd, + internal_strlen(grp->gr_passwd) + 1); + char **p = grp->gr_mem; + for (; *p; ++p) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1); + } + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, grp->gr_mem, + (p - grp->gr_mem + 1) * sizeof(*p)); + } +} +#endif // SANITIZER_POSIX + +#if SANITIZER_INTERCEPT_GETPWNAM_AND_FRIENDS +INTERCEPTOR(__sanitizer_passwd *, getpwnam, const char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpwnam, name); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + __sanitizer_passwd *res = REAL(getpwnam)(name); + unpoison_passwd(ctx, res); + return res; +} +INTERCEPTOR(__sanitizer_passwd *, getpwuid, u32 uid) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpwuid, uid); + __sanitizer_passwd *res = REAL(getpwuid)(uid); + unpoison_passwd(ctx, res); + return res; +} +INTERCEPTOR(__sanitizer_group *, getgrnam, const char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getgrnam, name); + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + __sanitizer_group *res = REAL(getgrnam)(name); + unpoison_group(ctx, res); + return res; +} +INTERCEPTOR(__sanitizer_group *, getgrgid, u32 gid) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getgrgid, gid); + __sanitizer_group *res = REAL(getgrgid)(gid); + unpoison_group(ctx, res); + return res; +} +#define INIT_GETPWNAM_AND_FRIENDS \ + COMMON_INTERCEPT_FUNCTION(getpwnam); \ + COMMON_INTERCEPT_FUNCTION(getpwuid); \ + COMMON_INTERCEPT_FUNCTION(getgrnam); \ + COMMON_INTERCEPT_FUNCTION(getgrgid); +#else +#define INIT_GETPWNAM_AND_FRIENDS +#endif + +#if SANITIZER_INTERCEPT_GETPWNAM_R_AND_FRIENDS +INTERCEPTOR(int, getpwnam_r, const char *name, __sanitizer_passwd *pwd, + char *buf, SIZE_T buflen, __sanitizer_passwd **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpwnam_r, name, pwd, buf, buflen, result); + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getpwnam_r)(name, pwd, buf, buflen, result); + if (!res && result) + unpoison_passwd(ctx, *result); + if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + return res; +} +INTERCEPTOR(int, getpwuid_r, u32 uid, __sanitizer_passwd *pwd, char *buf, + SIZE_T buflen, __sanitizer_passwd **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpwuid_r, uid, pwd, buf, buflen, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getpwuid_r)(uid, pwd, buf, buflen, result); + if (!res && result) + unpoison_passwd(ctx, *result); + if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + return res; +} +INTERCEPTOR(int, getgrnam_r, const char *name, __sanitizer_group *grp, + char *buf, SIZE_T buflen, __sanitizer_group **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getgrnam_r, name, grp, buf, buflen, result); + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getgrnam_r)(name, grp, buf, buflen, result); + if (!res && result) + unpoison_group(ctx, *result); + if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + return res; +} +INTERCEPTOR(int, getgrgid_r, u32 gid, __sanitizer_group *grp, char *buf, + SIZE_T buflen, __sanitizer_group **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getgrgid_r, gid, grp, buf, buflen, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getgrgid_r)(gid, grp, buf, buflen, result); + if (!res && result) + unpoison_group(ctx, *result); + if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + return res; +} +#define INIT_GETPWNAM_R_AND_FRIENDS \ + COMMON_INTERCEPT_FUNCTION(getpwnam_r); \ + COMMON_INTERCEPT_FUNCTION(getpwuid_r); \ + COMMON_INTERCEPT_FUNCTION(getgrnam_r); \ + COMMON_INTERCEPT_FUNCTION(getgrgid_r); +#else +#define INIT_GETPWNAM_R_AND_FRIENDS +#endif + +#if SANITIZER_INTERCEPT_GETPWENT +INTERCEPTOR(__sanitizer_passwd *, getpwent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpwent, dummy); + __sanitizer_passwd *res = REAL(getpwent)(dummy); + unpoison_passwd(ctx, res); + return res; +} +INTERCEPTOR(__sanitizer_group *, getgrent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getgrent, dummy); + __sanitizer_group *res = REAL(getgrent)(dummy); + unpoison_group(ctx, res); + return res; +} +#define INIT_GETPWENT \ + COMMON_INTERCEPT_FUNCTION(getpwent); \ + COMMON_INTERCEPT_FUNCTION(getgrent); +#else +#define INIT_GETPWENT +#endif + +#if SANITIZER_INTERCEPT_FGETPWENT +INTERCEPTOR(__sanitizer_passwd *, fgetpwent, void *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent, fp); + __sanitizer_passwd *res = REAL(fgetpwent)(fp); + unpoison_passwd(ctx, res); + return res; +} +INTERCEPTOR(__sanitizer_group *, fgetgrent, void *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent, fp); + __sanitizer_group *res = REAL(fgetgrent)(fp); + unpoison_group(ctx, res); + return res; +} +#define INIT_FGETPWENT \ + COMMON_INTERCEPT_FUNCTION(fgetpwent); \ + COMMON_INTERCEPT_FUNCTION(fgetgrent); +#else +#define INIT_FGETPWENT +#endif + +#if SANITIZER_INTERCEPT_GETPWENT_R +INTERCEPTOR(int, getpwent_r, __sanitizer_passwd *pwbuf, char *buf, + SIZE_T buflen, __sanitizer_passwd **pwbufp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpwent_r, pwbuf, buf, buflen, pwbufp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getpwent_r)(pwbuf, buf, buflen, pwbufp); + if (!res && pwbufp) + unpoison_passwd(ctx, *pwbufp); + if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); + return res; +} +INTERCEPTOR(int, getgrent_r, __sanitizer_group *pwbuf, char *buf, SIZE_T buflen, + __sanitizer_group **pwbufp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getgrent_r, pwbuf, buf, buflen, pwbufp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getgrent_r)(pwbuf, buf, buflen, pwbufp); + if (!res && pwbufp) + unpoison_group(ctx, *pwbufp); + if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); + return res; +} +#define INIT_GETPWENT_R \ + COMMON_INTERCEPT_FUNCTION(getpwent_r); \ + COMMON_INTERCEPT_FUNCTION(getgrent_r); +#else +#define INIT_GETPWENT_R +#endif + +#if SANITIZER_INTERCEPT_FGETPWENT_R +INTERCEPTOR(int, fgetpwent_r, void *fp, __sanitizer_passwd *pwbuf, char *buf, + SIZE_T buflen, __sanitizer_passwd **pwbufp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgetpwent_r, fp, pwbuf, buf, buflen, pwbufp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(fgetpwent_r)(fp, pwbuf, buf, buflen, pwbufp); + if (!res && pwbufp) + unpoison_passwd(ctx, *pwbufp); + if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); + return res; +} +#define INIT_FGETPWENT_R \ + COMMON_INTERCEPT_FUNCTION(fgetpwent_r); +#else +#define INIT_FGETPWENT_R +#endif + +#if SANITIZER_INTERCEPT_FGETGRENT_R +INTERCEPTOR(int, fgetgrent_r, void *fp, __sanitizer_group *pwbuf, char *buf, + SIZE_T buflen, __sanitizer_group **pwbufp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgetgrent_r, fp, pwbuf, buf, buflen, pwbufp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(fgetgrent_r)(fp, pwbuf, buf, buflen, pwbufp); + if (!res && pwbufp) + unpoison_group(ctx, *pwbufp); + if (pwbufp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pwbufp, sizeof(*pwbufp)); + return res; +} +#define INIT_FGETGRENT_R \ + COMMON_INTERCEPT_FUNCTION(fgetgrent_r); +#else +#define INIT_FGETGRENT_R +#endif + +#if SANITIZER_INTERCEPT_SETPWENT +// The only thing these interceptors do is disable any nested interceptors. +// These functions may open nss modules and call uninstrumented functions from +// them, and we don't want things like strlen() to trigger. +INTERCEPTOR(void, setpwent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setpwent, dummy); + REAL(setpwent)(dummy); +} +INTERCEPTOR(void, endpwent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, endpwent, dummy); + REAL(endpwent)(dummy); +} +INTERCEPTOR(void, setgrent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setgrent, dummy); + REAL(setgrent)(dummy); +} +INTERCEPTOR(void, endgrent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, endgrent, dummy); + REAL(endgrent)(dummy); +} +#define INIT_SETPWENT \ + COMMON_INTERCEPT_FUNCTION(setpwent); \ + COMMON_INTERCEPT_FUNCTION(endpwent); \ + COMMON_INTERCEPT_FUNCTION(setgrent); \ + COMMON_INTERCEPT_FUNCTION(endgrent); +#else +#define INIT_SETPWENT +#endif + +#if SANITIZER_INTERCEPT_CLOCK_GETTIME +INTERCEPTOR(int, clock_getres, u32 clk_id, void *tp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, clock_getres, clk_id, tp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(clock_getres)(clk_id, tp); + if (!res && tp) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz); + } + return res; +} +INTERCEPTOR(int, clock_gettime, u32 clk_id, void *tp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, clock_gettime, clk_id, tp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(clock_gettime)(clk_id, tp); + if (!res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, struct_timespec_sz); + } + return res; +} +#if SANITIZER_GLIBC +namespace __sanitizer { +extern "C" { +int real_clock_gettime(u32 clk_id, void *tp) { + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_clock_gettime(clk_id, tp); + return REAL(clock_gettime)(clk_id, tp); +} +} // extern "C" +} // namespace __sanitizer +#endif +INTERCEPTOR(int, clock_settime, u32 clk_id, const void *tp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, clock_settime, clk_id, tp); + COMMON_INTERCEPTOR_READ_RANGE(ctx, tp, struct_timespec_sz); + return REAL(clock_settime)(clk_id, tp); +} +#define INIT_CLOCK_GETTIME \ + COMMON_INTERCEPT_FUNCTION(clock_getres); \ + COMMON_INTERCEPT_FUNCTION(clock_gettime); \ + COMMON_INTERCEPT_FUNCTION(clock_settime); +#else +#define INIT_CLOCK_GETTIME +#endif + +#if SANITIZER_INTERCEPT_CLOCK_GETCPUCLOCKID +INTERCEPTOR(int, clock_getcpuclockid, pid_t pid, + __sanitizer_clockid_t *clockid) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, clock_getcpuclockid, pid, clockid); + int res = REAL(clock_getcpuclockid)(pid, clockid); + if (!res && clockid) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid); + } + return res; +} + +INTERCEPTOR(int, pthread_getcpuclockid, uptr thread, + __sanitizer_clockid_t *clockid) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_getcpuclockid, thread, clockid); + int res = REAL(pthread_getcpuclockid)(thread, clockid); + if (!res && clockid) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, clockid, sizeof *clockid); + } + return res; +} + +#define INIT_CLOCK_GETCPUCLOCKID \ + COMMON_INTERCEPT_FUNCTION(clock_getcpuclockid); \ + COMMON_INTERCEPT_FUNCTION(pthread_getcpuclockid); +#else +#define INIT_CLOCK_GETCPUCLOCKID +#endif + +#if SANITIZER_INTERCEPT_TIMER_CREATE +INTERCEPTOR(int, timer_create, __sanitizer_clockid_t clockid, void *sevp, + __sanitizer_timer_t *timer) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, timer_create, clockid, sevp, timer); + int res = REAL(timer_create)(clockid, sevp, timer); + if (!res && timer) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, timer, sizeof *timer); + } + return res; +} + +INTERCEPTOR(int, timer_delete, __sanitizer_timer_t timer) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, timer_delete, timer); + int res = REAL(timer_delete)(timer); + return res; +} + +INTERCEPTOR(int, timer_gettime, __sanitizer_timer_t timer, + struct __sanitizer_itimerspec *curr_value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, timer_gettime, timer, curr_value); + int res = REAL(timer_gettime)(timer, curr_value); + if (!res && curr_value) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, sizeof *curr_value); + } + return res; +} + +INTERCEPTOR(int, timer_settime, __sanitizer_timer_t timer, int flags, + const struct __sanitizer_itimerspec *new_value, + struct __sanitizer_itimerspec *old_value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, timer_settime, timer, flags, new_value, + old_value); + int res = REAL(timer_settime)(timer, flags, new_value, old_value); + if (!res) { + if (new_value) + COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, sizeof *new_value); + if (old_value) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, sizeof *old_value); + } + return res; +} + +# define INIT_TIMER_CREATE \ + COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_create, "GLIBC_2.3.3"); \ + COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_delete, "GLIBC_2.3.3"); \ + COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_gettime, "GLIBC_2.3.3"); \ + COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(timer_settime, "GLIBC_2.3.3"); +#else +# define INIT_TIMER_CREATE +#endif + +#if SANITIZER_INTERCEPT_GETITIMER +INTERCEPTOR(int, getitimer, int which, void *curr_value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getitimer, which, curr_value); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getitimer)(which, curr_value); + if (!res && curr_value) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerval_sz); + } + return res; +} +INTERCEPTOR(int, setitimer, int which, const void *new_value, void *old_value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setitimer, which, new_value, old_value); + if (new_value) { + // itimerval can contain padding that may be legitimately uninitialized + const struct __sanitizer_itimerval *nv = + (const struct __sanitizer_itimerval *)new_value; + COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_sec, + sizeof(__sanitizer_time_t)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_interval.tv_usec, + sizeof(__sanitizer_suseconds_t)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_sec, + sizeof(__sanitizer_time_t)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &nv->it_value.tv_usec, + sizeof(__sanitizer_suseconds_t)); + } + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(setitimer)(which, new_value, old_value); + if (!res && old_value) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerval_sz); + } + return res; +} +#define INIT_GETITIMER \ + COMMON_INTERCEPT_FUNCTION(getitimer); \ + COMMON_INTERCEPT_FUNCTION(setitimer); +#else +#define INIT_GETITIMER +#endif + +#if SANITIZER_INTERCEPT_TIMESPEC_GET +INTERCEPTOR(int, timespec_get, struct __sanitizer_timespec *ts, int base) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, timespec_get, ts, base); + // We don't yet know if ts is addressable, so we use our own scratch buffer + struct __sanitizer_timespec ts_local; + int res = REAL(timespec_get)(&ts_local, base); + if (res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ts, + sizeof(struct __sanitizer_timespec)); + internal_memcpy(ts, &ts_local, sizeof(struct __sanitizer_timespec)); + } + return res; +} +# define INIT_TIMESPEC_GET COMMON_INTERCEPT_FUNCTION(timespec_get); +#else +# define INIT_TIMESPEC_GET +#endif + +#if SANITIZER_INTERCEPT_GLOB +static void unpoison_glob_t(void *ctx, __sanitizer_glob_t *pglob) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pglob, sizeof(*pglob)); + // +1 for NULL pointer at the end. + if (pglob->gl_pathv) + COMMON_INTERCEPTOR_WRITE_RANGE( + ctx, pglob->gl_pathv, (pglob->gl_pathc + 1) * sizeof(*pglob->gl_pathv)); + for (SIZE_T i = 0; i < pglob->gl_pathc; ++i) { + char *p = pglob->gl_pathv[i]; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, internal_strlen(p) + 1); + } +} + +#if SANITIZER_SOLARIS +INTERCEPTOR(int, glob, const char *pattern, int flags, + int (*errfunc)(const char *epath, int eerrno), + __sanitizer_glob_t *pglob) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob); + COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); + int res = REAL(glob)(pattern, flags, errfunc, pglob); + if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); + return res; +} +#else +static THREADLOCAL __sanitizer_glob_t *pglob_copy; + +static void wrapped_gl_closedir(void *dir) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + pglob_copy->gl_closedir(dir); +} + +static void *wrapped_gl_readdir(void *dir) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + return pglob_copy->gl_readdir(dir); +} + +static void *wrapped_gl_opendir(const char *s) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1); + return pglob_copy->gl_opendir(s); +} + +static int wrapped_gl_lstat(const char *s, void *st) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(2); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1); + return pglob_copy->gl_lstat(s, st); +} + +static int wrapped_gl_stat(const char *s, void *st) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(2); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, internal_strlen(s) + 1); + return pglob_copy->gl_stat(s, st); +} + +static const __sanitizer_glob_t kGlobCopy = { + 0, 0, 0, + 0, wrapped_gl_closedir, wrapped_gl_readdir, + wrapped_gl_opendir, wrapped_gl_lstat, wrapped_gl_stat}; + +INTERCEPTOR(int, glob, const char *pattern, int flags, + int (*errfunc)(const char *epath, int eerrno), + __sanitizer_glob_t *pglob) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, glob, pattern, flags, errfunc, pglob); + COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); + __sanitizer_glob_t glob_copy; + internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy)); + if (flags & glob_altdirfunc) { + Swap(pglob->gl_closedir, glob_copy.gl_closedir); + Swap(pglob->gl_readdir, glob_copy.gl_readdir); + Swap(pglob->gl_opendir, glob_copy.gl_opendir); + Swap(pglob->gl_lstat, glob_copy.gl_lstat); + Swap(pglob->gl_stat, glob_copy.gl_stat); + pglob_copy = &glob_copy; + } + int res = REAL(glob)(pattern, flags, errfunc, pglob); + if (flags & glob_altdirfunc) { + Swap(pglob->gl_closedir, glob_copy.gl_closedir); + Swap(pglob->gl_readdir, glob_copy.gl_readdir); + Swap(pglob->gl_opendir, glob_copy.gl_opendir); + Swap(pglob->gl_lstat, glob_copy.gl_lstat); + Swap(pglob->gl_stat, glob_copy.gl_stat); + } + pglob_copy = 0; + if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); + return res; +} +#endif // SANITIZER_SOLARIS +#define INIT_GLOB \ + COMMON_INTERCEPT_FUNCTION(glob); +#else // SANITIZER_INTERCEPT_GLOB +#define INIT_GLOB +#endif // SANITIZER_INTERCEPT_GLOB + +#if SANITIZER_INTERCEPT_GLOB64 +INTERCEPTOR(int, glob64, const char *pattern, int flags, + int (*errfunc)(const char *epath, int eerrno), + __sanitizer_glob_t *pglob) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, glob64, pattern, flags, errfunc, pglob); + COMMON_INTERCEPTOR_READ_STRING(ctx, pattern, 0); + __sanitizer_glob_t glob_copy; + internal_memcpy(&glob_copy, &kGlobCopy, sizeof(glob_copy)); + if (flags & glob_altdirfunc) { + Swap(pglob->gl_closedir, glob_copy.gl_closedir); + Swap(pglob->gl_readdir, glob_copy.gl_readdir); + Swap(pglob->gl_opendir, glob_copy.gl_opendir); + Swap(pglob->gl_lstat, glob_copy.gl_lstat); + Swap(pglob->gl_stat, glob_copy.gl_stat); + pglob_copy = &glob_copy; + } + int res = REAL(glob64)(pattern, flags, errfunc, pglob); + if (flags & glob_altdirfunc) { + Swap(pglob->gl_closedir, glob_copy.gl_closedir); + Swap(pglob->gl_readdir, glob_copy.gl_readdir); + Swap(pglob->gl_opendir, glob_copy.gl_opendir); + Swap(pglob->gl_lstat, glob_copy.gl_lstat); + Swap(pglob->gl_stat, glob_copy.gl_stat); + } + pglob_copy = 0; + if ((!res || res == glob_nomatch) && pglob) unpoison_glob_t(ctx, pglob); + return res; +} +#define INIT_GLOB64 \ + COMMON_INTERCEPT_FUNCTION(glob64); +#else // SANITIZER_INTERCEPT_GLOB64 +#define INIT_GLOB64 +#endif // SANITIZER_INTERCEPT_GLOB64 + +#if SANITIZER_INTERCEPT___B64_TO +INTERCEPTOR(int, __b64_ntop, unsigned char const *src, SIZE_T srclength, + char *target, SIZE_T targsize) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __b64_ntop, src, srclength, target, targsize); + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, srclength); + int res = REAL(__b64_ntop)(src, srclength, target, targsize); + if (res >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res + 1); + return res; +} +INTERCEPTOR(int, __b64_pton, char const *src, char *target, SIZE_T targsize) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __b64_pton, src, target, targsize); + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int res = REAL(__b64_pton)(src, target, targsize); + if (res >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, target, res); + return res; +} +#define INIT___B64_TO \ + COMMON_INTERCEPT_FUNCTION(__b64_ntop); \ + COMMON_INTERCEPT_FUNCTION(__b64_pton); +#else // SANITIZER_INTERCEPT___B64_TO +#define INIT___B64_TO +#endif // SANITIZER_INTERCEPT___B64_TO + +#if SANITIZER_INTERCEPT_DN_COMP_EXPAND +# if __GLIBC_PREREQ(2, 34) +// Changed with https://sourceware.org/git/?p=glibc.git;h=640bbdf +# define DN_COMP_INTERCEPTOR_NAME dn_comp +# define DN_EXPAND_INTERCEPTOR_NAME dn_expand +# else +# define DN_COMP_INTERCEPTOR_NAME __dn_comp +# define DN_EXPAND_INTERCEPTOR_NAME __dn_expand +# endif +INTERCEPTOR(int, DN_COMP_INTERCEPTOR_NAME, unsigned char *exp_dn, + unsigned char *comp_dn, int length, unsigned char **dnptrs, + unsigned char **lastdnptr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, DN_COMP_INTERCEPTOR_NAME, exp_dn, comp_dn, + length, dnptrs, lastdnptr); + int res = REAL(DN_COMP_INTERCEPTOR_NAME)(exp_dn, comp_dn, length, dnptrs, + lastdnptr); + if (res >= 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, comp_dn, res); + if (dnptrs && lastdnptr) { + unsigned char **p = dnptrs; + for (; p != lastdnptr && *p; ++p) + ; + if (p != lastdnptr) + ++p; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dnptrs, (p - dnptrs) * sizeof(*p)); + } + } + return res; +} +INTERCEPTOR(int, DN_EXPAND_INTERCEPTOR_NAME, unsigned char const *base, + unsigned char const *end, unsigned char const *src, char *dest, + int space) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, DN_EXPAND_INTERCEPTOR_NAME, base, end, src, + dest, space); + // TODO: add read check if __dn_comp intercept added + int res = REAL(DN_EXPAND_INTERCEPTOR_NAME)(base, end, src, dest, space); + if (res >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, internal_strlen(dest) + 1); + return res; +} +# define INIT_DN_COMP_EXPAND \ + COMMON_INTERCEPT_FUNCTION(DN_COMP_INTERCEPTOR_NAME); \ + COMMON_INTERCEPT_FUNCTION(DN_EXPAND_INTERCEPTOR_NAME); +#else // SANITIZER_INTERCEPT_DN_COMP_EXPAND +# define INIT_DN_COMP_EXPAND +#endif // SANITIZER_INTERCEPT_DN_COMP_EXPAND + +#if SANITIZER_INTERCEPT_POSIX_SPAWN + +template <class RealSpawnPtr> +static int PosixSpawnImpl(void *ctx, RealSpawnPtr *real_posix_spawn, pid_t *pid, + const char *file_or_path, const void *file_actions, + const void *attrp, char *const argv[], + char *const envp[]) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, file_or_path, + internal_strlen(file_or_path) + 1); + if (argv) { + for (char *const *s = argv; ; ++s) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s)); + if (!*s) break; + COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1); + } + } + if (envp) { + for (char *const *s = envp; ; ++s) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(*s)); + if (!*s) break; + COMMON_INTERCEPTOR_READ_RANGE(ctx, *s, internal_strlen(*s) + 1); + } + } + int res = + real_posix_spawn(pid, file_or_path, file_actions, attrp, argv, envp); + if (res == 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pid, sizeof(*pid)); + return res; +} +INTERCEPTOR(int, posix_spawn, pid_t *pid, const char *path, + const void *file_actions, const void *attrp, char *const argv[], + char *const envp[]) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, posix_spawn, pid, path, file_actions, attrp, + argv, envp); + return PosixSpawnImpl(ctx, REAL(posix_spawn), pid, path, file_actions, attrp, + argv, envp); +} +INTERCEPTOR(int, posix_spawnp, pid_t *pid, const char *file, + const void *file_actions, const void *attrp, char *const argv[], + char *const envp[]) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, posix_spawnp, pid, file, file_actions, attrp, + argv, envp); + return PosixSpawnImpl(ctx, REAL(posix_spawnp), pid, file, file_actions, attrp, + argv, envp); +} +# define INIT_POSIX_SPAWN \ + COMMON_INTERCEPT_FUNCTION(posix_spawn); \ + COMMON_INTERCEPT_FUNCTION(posix_spawnp); +#else // SANITIZER_INTERCEPT_POSIX_SPAWN +# define INIT_POSIX_SPAWN +#endif // SANITIZER_INTERCEPT_POSIX_SPAWN + +#if SANITIZER_INTERCEPT_WAIT +// According to sys/wait.h, wait(), waitid(), waitpid() may have symbol version +// suffixes on Darwin. See the declaration of INTERCEPTOR_WITH_SUFFIX for +// details. +INTERCEPTOR_WITH_SUFFIX(int, wait, int *status) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wait, status); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait)(status); + if (res != -1 && status) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); + return res; +} +// On FreeBSD id_t is always 64-bit wide. +#if SANITIZER_FREEBSD && (SANITIZER_WORDSIZE == 32) +INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, long long id, void *infop, + int options) { +#else +INTERCEPTOR_WITH_SUFFIX(int, waitid, int idtype, int id, void *infop, + int options) { +#endif + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, waitid, idtype, id, infop, options); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(waitid)(idtype, id, infop, options); + if (res != -1 && infop) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, infop, siginfo_t_sz); + return res; +} +INTERCEPTOR_WITH_SUFFIX(int, waitpid, int pid, int *status, int options) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, waitpid, pid, status, options); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(waitpid)(pid, status, options); + if (res != -1 && status) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); + return res; +} +INTERCEPTOR(int, wait3, int *status, int options, void *rusage) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wait3, status, options, rusage); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait3)(status, options, rusage); + if (res != -1) { + if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); + if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); + } + return res; +} +#if SANITIZER_ANDROID +INTERCEPTOR(int, __wait4, int pid, int *status, int options, void *rusage) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __wait4, pid, status, options, rusage); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = + COMMON_INTERCEPTOR_BLOCK_REAL(__wait4)(pid, status, options, rusage); + if (res != -1) { + if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); + if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); + } + return res; +} +#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(__wait4); +#else +INTERCEPTOR(int, wait4, int pid, int *status, int options, void *rusage) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wait4, pid, status, options, rusage); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(wait4)(pid, status, options, rusage); + if (res != -1) { + if (status) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, status, sizeof(*status)); + if (rusage) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rusage, struct_rusage_sz); + } + return res; +} +#define INIT_WAIT4 COMMON_INTERCEPT_FUNCTION(wait4); +#endif // SANITIZER_ANDROID +#define INIT_WAIT \ + COMMON_INTERCEPT_FUNCTION(wait); \ + COMMON_INTERCEPT_FUNCTION(waitid); \ + COMMON_INTERCEPT_FUNCTION(waitpid); \ + COMMON_INTERCEPT_FUNCTION(wait3); +#else +#define INIT_WAIT +#define INIT_WAIT4 +#endif + +#if SANITIZER_INTERCEPT_INET +INTERCEPTOR(char *, inet_ntop, int af, const void *src, char *dst, u32 size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, inet_ntop, af, src, dst, size); + uptr sz = __sanitizer_in_addr_sz(af); + if (sz) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sz); + // FIXME: figure out read size based on the address family. + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(inet_ntop)(af, src, dst, size); + if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} +INTERCEPTOR(int, inet_pton, int af, const char *src, void *dst) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, inet_pton, af, src, dst); + COMMON_INTERCEPTOR_READ_STRING(ctx, src, 0); + // FIXME: figure out read size based on the address family. + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(inet_pton)(af, src, dst); + if (res == 1) { + uptr sz = __sanitizer_in_addr_sz(af); + if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz); + } + return res; +} +#define INIT_INET \ + COMMON_INTERCEPT_FUNCTION(inet_ntop); \ + COMMON_INTERCEPT_FUNCTION(inet_pton); +#else +#define INIT_INET +#endif + +#if SANITIZER_INTERCEPT_INET +INTERCEPTOR(int, inet_aton, const char *cp, void *dst) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, inet_aton, cp, dst); + if (cp) COMMON_INTERCEPTOR_READ_RANGE(ctx, cp, internal_strlen(cp) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(inet_aton)(cp, dst); + if (res != 0) { + uptr sz = __sanitizer_in_addr_sz(af_inet); + if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sz); + } + return res; +} +#define INIT_INET_ATON COMMON_INTERCEPT_FUNCTION(inet_aton); +#else +#define INIT_INET_ATON +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_GETSCHEDPARAM +INTERCEPTOR(int, pthread_getschedparam, uptr thread, int *policy, int *param) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_getschedparam, thread, policy, param); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(pthread_getschedparam)(thread, policy, param); + if (res == 0) { + if (policy) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, policy, sizeof(*policy)); + if (param) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, sizeof(*param)); + } + return res; +} +#define INIT_PTHREAD_GETSCHEDPARAM \ + COMMON_INTERCEPT_FUNCTION(pthread_getschedparam); +#else +#define INIT_PTHREAD_GETSCHEDPARAM +#endif + +#if SANITIZER_INTERCEPT_GETADDRINFO +INTERCEPTOR(int, getaddrinfo, char *node, char *service, + struct __sanitizer_addrinfo *hints, + struct __sanitizer_addrinfo **out) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getaddrinfo, node, service, hints, out); + if (node) COMMON_INTERCEPTOR_READ_RANGE(ctx, node, internal_strlen(node) + 1); + if (service) + COMMON_INTERCEPTOR_READ_RANGE(ctx, service, internal_strlen(service) + 1); + if (hints) + COMMON_INTERCEPTOR_READ_RANGE(ctx, hints, sizeof(__sanitizer_addrinfo)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getaddrinfo)(node, service, hints, out); + if (res == 0 && out) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, out, sizeof(*out)); + struct __sanitizer_addrinfo *p = *out; + while (p) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); + if (p->ai_addr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_addr, p->ai_addrlen); + if (p->ai_canonname) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ai_canonname, + internal_strlen(p->ai_canonname) + 1); + p = p->ai_next; + } + } + return res; +} +#define INIT_GETADDRINFO COMMON_INTERCEPT_FUNCTION(getaddrinfo); +#else +#define INIT_GETADDRINFO +#endif + +#if SANITIZER_INTERCEPT_GETNAMEINFO +INTERCEPTOR(int, getnameinfo, void *sockaddr, unsigned salen, char *host, + unsigned hostlen, char *serv, unsigned servlen, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getnameinfo, sockaddr, salen, host, hostlen, + serv, servlen, flags); + // FIXME: consider adding READ_RANGE(sockaddr, salen) + // There is padding in in_addr that may make this too noisy + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = + REAL(getnameinfo)(sockaddr, salen, host, hostlen, serv, servlen, flags); + if (res == 0) { + if (host && hostlen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, host, internal_strlen(host) + 1); + if (serv && servlen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, serv, internal_strlen(serv) + 1); + } + return res; +} +#define INIT_GETNAMEINFO COMMON_INTERCEPT_FUNCTION(getnameinfo); +#else +#define INIT_GETNAMEINFO +#endif + +#if SANITIZER_INTERCEPT_GETSOCKNAME +INTERCEPTOR(int, getsockname, int sock_fd, void *addr, unsigned *addrlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getsockname, sock_fd, addr, addrlen); + unsigned addr_sz; + if (addrlen) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); + addr_sz = *addrlen; + } + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getsockname)(sock_fd, addr, addrlen); + if (!res && addr && addrlen) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen)); + } + return res; +} +#define INIT_GETSOCKNAME COMMON_INTERCEPT_FUNCTION(getsockname); +#else +#define INIT_GETSOCKNAME +#endif + +#if SANITIZER_INTERCEPT_GETHOSTBYNAME || SANITIZER_INTERCEPT_GETHOSTBYNAME_R +static void write_hostent(void *ctx, struct __sanitizer_hostent *h) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h, sizeof(__sanitizer_hostent)); + if (h->h_name) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h->h_name, internal_strlen(h->h_name) + 1); + char **p = h->h_aliases; + while (*p) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1); + ++p; + } + COMMON_INTERCEPTOR_WRITE_RANGE( + ctx, h->h_aliases, (p - h->h_aliases + 1) * sizeof(*h->h_aliases)); + p = h->h_addr_list; + while (*p) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, h->h_length); + ++p; + } + COMMON_INTERCEPTOR_WRITE_RANGE( + ctx, h->h_addr_list, (p - h->h_addr_list + 1) * sizeof(*h->h_addr_list)); +} +#endif + +#if SANITIZER_INTERCEPT_GETHOSTBYNAME +INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname, char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname, name); + struct __sanitizer_hostent *res = REAL(gethostbyname)(name); + if (res) write_hostent(ctx, res); + return res; +} + +INTERCEPTOR(struct __sanitizer_hostent *, gethostbyaddr, void *addr, int len, + int type) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr, addr, len, type); + COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len); + struct __sanitizer_hostent *res = REAL(gethostbyaddr)(addr, len, type); + if (res) write_hostent(ctx, res); + return res; +} + +INTERCEPTOR(struct __sanitizer_hostent *, gethostent, int fake) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostent, fake); + struct __sanitizer_hostent *res = REAL(gethostent)(fake); + if (res) write_hostent(ctx, res); + return res; +} +#define INIT_GETHOSTBYNAME \ + COMMON_INTERCEPT_FUNCTION(gethostent); \ + COMMON_INTERCEPT_FUNCTION(gethostbyaddr); \ + COMMON_INTERCEPT_FUNCTION(gethostbyname); +#else +#define INIT_GETHOSTBYNAME +#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME + +#if SANITIZER_INTERCEPT_GETHOSTBYNAME2 +INTERCEPTOR(struct __sanitizer_hostent *, gethostbyname2, char *name, int af) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2, name, af); + struct __sanitizer_hostent *res = REAL(gethostbyname2)(name, af); + if (res) write_hostent(ctx, res); + return res; +} +#define INIT_GETHOSTBYNAME2 COMMON_INTERCEPT_FUNCTION(gethostbyname2); +#else +#define INIT_GETHOSTBYNAME2 +#endif // SANITIZER_INTERCEPT_GETHOSTBYNAME2 + +#if SANITIZER_INTERCEPT_GETHOSTBYNAME_R +INTERCEPTOR(int, gethostbyname_r, char *name, struct __sanitizer_hostent *ret, + char *buf, SIZE_T buflen, __sanitizer_hostent **result, + int *h_errnop) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname_r, name, ret, buf, buflen, result, + h_errnop); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(gethostbyname_r)(name, ret, buf, buflen, result, h_errnop); + if (result) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + if (res == 0 && *result) write_hostent(ctx, *result); + } + if (h_errnop) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); + return res; +} +#define INIT_GETHOSTBYNAME_R COMMON_INTERCEPT_FUNCTION(gethostbyname_r); +#else +#define INIT_GETHOSTBYNAME_R +#endif + +#if SANITIZER_INTERCEPT_GETHOSTENT_R +INTERCEPTOR(int, gethostent_r, struct __sanitizer_hostent *ret, char *buf, + SIZE_T buflen, __sanitizer_hostent **result, int *h_errnop) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostent_r, ret, buf, buflen, result, + h_errnop); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(gethostent_r)(ret, buf, buflen, result, h_errnop); + if (result) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + if (res == 0 && *result) write_hostent(ctx, *result); + } + if (h_errnop) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); + return res; +} +#define INIT_GETHOSTENT_R \ + COMMON_INTERCEPT_FUNCTION(gethostent_r); +#else +#define INIT_GETHOSTENT_R +#endif + +#if SANITIZER_INTERCEPT_GETHOSTBYADDR_R +INTERCEPTOR(int, gethostbyaddr_r, void *addr, int len, int type, + struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen, + __sanitizer_hostent **result, int *h_errnop) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostbyaddr_r, addr, len, type, ret, buf, + buflen, result, h_errnop); + COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, len); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(gethostbyaddr_r)(addr, len, type, ret, buf, buflen, result, + h_errnop); + if (result) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + if (res == 0 && *result) write_hostent(ctx, *result); + } + if (h_errnop) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); + return res; +} +#define INIT_GETHOSTBYADDR_R \ + COMMON_INTERCEPT_FUNCTION(gethostbyaddr_r); +#else +#define INIT_GETHOSTBYADDR_R +#endif + +#if SANITIZER_INTERCEPT_GETHOSTBYNAME2_R +INTERCEPTOR(int, gethostbyname2_r, char *name, int af, + struct __sanitizer_hostent *ret, char *buf, SIZE_T buflen, + __sanitizer_hostent **result, int *h_errnop) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, gethostbyname2_r, name, af, ret, buf, buflen, + result, h_errnop); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = + REAL(gethostbyname2_r)(name, af, ret, buf, buflen, result, h_errnop); + if (result) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + if (res == 0 && *result) write_hostent(ctx, *result); + } + if (h_errnop) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, h_errnop, sizeof(*h_errnop)); + return res; +} +#define INIT_GETHOSTBYNAME2_R \ + COMMON_INTERCEPT_FUNCTION(gethostbyname2_r); +#else +#define INIT_GETHOSTBYNAME2_R +#endif + +#if SANITIZER_INTERCEPT_GETSOCKOPT +INTERCEPTOR(int, getsockopt, int sockfd, int level, int optname, void *optval, + int *optlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getsockopt, sockfd, level, optname, optval, + optlen); + if (optlen) COMMON_INTERCEPTOR_READ_RANGE(ctx, optlen, sizeof(*optlen)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getsockopt)(sockfd, level, optname, optval, optlen); + if (res == 0) + if (optval && optlen) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, optval, *optlen); + return res; +} +#define INIT_GETSOCKOPT COMMON_INTERCEPT_FUNCTION(getsockopt); +#else +#define INIT_GETSOCKOPT +#endif + +#if SANITIZER_INTERCEPT_ACCEPT +INTERCEPTOR(int, accept, int fd, void *addr, unsigned *addrlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, accept, fd, addr, addrlen); + unsigned addrlen0 = 0; + if (addrlen) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); + addrlen0 = *addrlen; + } + int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(accept)(fd, addr, addrlen); + if (fd2 >= 0) { + if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); + if (addr && addrlen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); + } + return fd2; +} +#define INIT_ACCEPT COMMON_INTERCEPT_FUNCTION(accept); +#else +#define INIT_ACCEPT +#endif + +#if SANITIZER_INTERCEPT_ACCEPT4 +INTERCEPTOR(int, accept4, int fd, void *addr, unsigned *addrlen, int f) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, accept4, fd, addr, addrlen, f); + unsigned addrlen0 = 0; + if (addrlen) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); + addrlen0 = *addrlen; + } + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(accept4)(fd, addr, addrlen, f); + if (fd2 >= 0) { + if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); + if (addr && addrlen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); + } + return fd2; +} +#define INIT_ACCEPT4 COMMON_INTERCEPT_FUNCTION(accept4); +#else +#define INIT_ACCEPT4 +#endif + +#if SANITIZER_INTERCEPT_PACCEPT +INTERCEPTOR(int, paccept, int fd, void *addr, unsigned *addrlen, + __sanitizer_sigset_t *set, int f) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, paccept, fd, addr, addrlen, set, f); + unsigned addrlen0 = 0; + if (addrlen) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); + addrlen0 = *addrlen; + } + if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); + int fd2 = COMMON_INTERCEPTOR_BLOCK_REAL(paccept)(fd, addr, addrlen, set, f); + if (fd2 >= 0) { + if (fd >= 0) COMMON_INTERCEPTOR_FD_SOCKET_ACCEPT(ctx, fd, fd2); + if (addr && addrlen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(*addrlen, addrlen0)); + } + return fd2; +} +#define INIT_PACCEPT COMMON_INTERCEPT_FUNCTION(paccept); +#else +#define INIT_PACCEPT +#endif + +#if SANITIZER_INTERCEPT_MODF +INTERCEPTOR(double, modf, double x, double *iptr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, modf, x, iptr); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + double res = REAL(modf)(x, iptr); + if (iptr) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); + } + return res; +} +INTERCEPTOR(float, modff, float x, float *iptr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, modff, x, iptr); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + float res = REAL(modff)(x, iptr); + if (iptr) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); + } + return res; +} +INTERCEPTOR(long double, modfl, long double x, long double *iptr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, modfl, x, iptr); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + long double res = REAL(modfl)(x, iptr); + if (iptr) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iptr, sizeof(*iptr)); + } + return res; +} +#define INIT_MODF \ + COMMON_INTERCEPT_FUNCTION(modf); \ + COMMON_INTERCEPT_FUNCTION(modff); \ + COMMON_INTERCEPT_FUNCTION_LDBL(modfl); +#else +#define INIT_MODF +#endif + +#if SANITIZER_INTERCEPT_RECVMSG || SANITIZER_INTERCEPT_RECVMMSG +static void write_msghdr(void *ctx, struct __sanitizer_msghdr *msg, + SSIZE_T maxlen) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg, sizeof(*msg)); + if (msg->msg_name && msg->msg_namelen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_name, msg->msg_namelen); + if (msg->msg_iov && msg->msg_iovlen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_iov, + sizeof(*msg->msg_iov) * msg->msg_iovlen); + write_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen); + if (msg->msg_control && msg->msg_controllen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msg->msg_control, msg->msg_controllen); +} +#endif + +#if SANITIZER_INTERCEPT_RECVMSG +INTERCEPTOR(SSIZE_T, recvmsg, int fd, struct __sanitizer_msghdr *msg, + int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, recvmsg, fd, msg, flags); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recvmsg)(fd, msg, flags); + if (res >= 0) { + if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + if (msg) { + write_msghdr(ctx, msg, res); + COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, msg); + } + } + return res; +} +#define INIT_RECVMSG COMMON_INTERCEPT_FUNCTION(recvmsg); +#else +#define INIT_RECVMSG +#endif + +#if SANITIZER_INTERCEPT_RECVMMSG +INTERCEPTOR(int, recvmmsg, int fd, struct __sanitizer_mmsghdr *msgvec, + unsigned int vlen, int flags, void *timeout) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, recvmmsg, fd, msgvec, vlen, flags, timeout); + if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz); + int res = + COMMON_INTERCEPTOR_BLOCK_REAL(recvmmsg)(fd, msgvec, vlen, flags, timeout); + if (res >= 0) { + if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + for (int i = 0; i < res; ++i) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len, + sizeof(msgvec[i].msg_len)); + write_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len); + COMMON_INTERCEPTOR_HANDLE_RECVMSG(ctx, &msgvec[i].msg_hdr); + } + } + return res; +} +#define INIT_RECVMMSG COMMON_INTERCEPT_FUNCTION(recvmmsg); +#else +#define INIT_RECVMMSG +#endif + +#if SANITIZER_INTERCEPT_SENDMSG || SANITIZER_INTERCEPT_SENDMMSG +static void read_msghdr_control(void *ctx, void *control, uptr controllen) { + const unsigned kCmsgDataOffset = + RoundUpTo(sizeof(__sanitizer_cmsghdr), sizeof(uptr)); + + char *p = (char *)control; + char *const control_end = p + controllen; + while (true) { + if (p + sizeof(__sanitizer_cmsghdr) > control_end) break; + __sanitizer_cmsghdr *cmsg = (__sanitizer_cmsghdr *)p; + COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_len, sizeof(cmsg->cmsg_len)); + + if (p + RoundUpTo(cmsg->cmsg_len, sizeof(uptr)) > control_end) break; + + COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_level, + sizeof(cmsg->cmsg_level)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &cmsg->cmsg_type, + sizeof(cmsg->cmsg_type)); + + if (cmsg->cmsg_len > kCmsgDataOffset) { + char *data = p + kCmsgDataOffset; + unsigned data_len = cmsg->cmsg_len - kCmsgDataOffset; + if (data_len > 0) COMMON_INTERCEPTOR_READ_RANGE(ctx, data, data_len); + } + + p += RoundUpTo(cmsg->cmsg_len, sizeof(uptr)); + } +} + +static void read_msghdr(void *ctx, struct __sanitizer_msghdr *msg, + SSIZE_T maxlen) { +#define R(f) \ + COMMON_INTERCEPTOR_READ_RANGE(ctx, &msg->msg_##f, sizeof(msg->msg_##f)) + R(name); + R(namelen); + R(iov); + R(iovlen); + R(control); + R(controllen); + R(flags); +#undef R + if (msg->msg_name && msg->msg_namelen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_name, msg->msg_namelen); + if (msg->msg_iov && msg->msg_iovlen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, msg->msg_iov, + sizeof(*msg->msg_iov) * msg->msg_iovlen); + read_iovec(ctx, msg->msg_iov, msg->msg_iovlen, maxlen); + if (msg->msg_control && msg->msg_controllen) + read_msghdr_control(ctx, msg->msg_control, msg->msg_controllen); +} +#endif + +#if SANITIZER_INTERCEPT_SENDMSG +INTERCEPTOR(SSIZE_T, sendmsg, int fd, struct __sanitizer_msghdr *msg, + int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sendmsg, fd, msg, flags); + if (fd >= 0) { + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + } + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(sendmsg)(fd, msg, flags); + if (common_flags()->intercept_send && res >= 0 && msg) + read_msghdr(ctx, msg, res); + return res; +} +#define INIT_SENDMSG COMMON_INTERCEPT_FUNCTION(sendmsg); +#else +#define INIT_SENDMSG +#endif + +#if SANITIZER_INTERCEPT_SENDMMSG +INTERCEPTOR(int, sendmmsg, int fd, struct __sanitizer_mmsghdr *msgvec, + unsigned vlen, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sendmmsg, fd, msgvec, vlen, flags); + if (fd >= 0) { + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + } + int res = COMMON_INTERCEPTOR_BLOCK_REAL(sendmmsg)(fd, msgvec, vlen, flags); + if (res >= 0 && msgvec) { + for (int i = 0; i < res; ++i) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &msgvec[i].msg_len, + sizeof(msgvec[i].msg_len)); + if (common_flags()->intercept_send) + read_msghdr(ctx, &msgvec[i].msg_hdr, msgvec[i].msg_len); + } + } + return res; +} +#define INIT_SENDMMSG COMMON_INTERCEPT_FUNCTION(sendmmsg); +#else +#define INIT_SENDMMSG +#endif + +#if SANITIZER_INTERCEPT_SYSMSG +INTERCEPTOR(int, msgsnd, int msqid, const void *msgp, SIZE_T msgsz, + int msgflg) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, msgsnd, msqid, msgp, msgsz, msgflg); + if (msgp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, msgp, sizeof(long) + msgsz); + int res = COMMON_INTERCEPTOR_BLOCK_REAL(msgsnd)(msqid, msgp, msgsz, msgflg); + return res; +} + +INTERCEPTOR(SSIZE_T, msgrcv, int msqid, void *msgp, SIZE_T msgsz, + long msgtyp, int msgflg) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, msgrcv, msqid, msgp, msgsz, msgtyp, msgflg); + SSIZE_T len = + COMMON_INTERCEPTOR_BLOCK_REAL(msgrcv)(msqid, msgp, msgsz, msgtyp, msgflg); + if (len != -1) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, msgp, sizeof(long) + len); + return len; +} + +#define INIT_SYSMSG \ + COMMON_INTERCEPT_FUNCTION(msgsnd); \ + COMMON_INTERCEPT_FUNCTION(msgrcv); +#else +#define INIT_SYSMSG +#endif + +#if SANITIZER_INTERCEPT_GETPEERNAME +INTERCEPTOR(int, getpeername, int sockfd, void *addr, unsigned *addrlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpeername, sockfd, addr, addrlen); + unsigned addr_sz; + if (addrlen) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, addrlen, sizeof(*addrlen)); + addr_sz = *addrlen; + } + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getpeername)(sockfd, addr, addrlen); + if (!res && addr && addrlen) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, Min(addr_sz, *addrlen)); + } + return res; +} +#define INIT_GETPEERNAME COMMON_INTERCEPT_FUNCTION(getpeername); +#else +#define INIT_GETPEERNAME +#endif + +#if SANITIZER_INTERCEPT_SYSINFO +INTERCEPTOR(int, sysinfo, void *info) { + void *ctx; + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + COMMON_INTERCEPTOR_ENTER(ctx, sysinfo, info); + int res = REAL(sysinfo)(info); + if (!res && info) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, struct_sysinfo_sz); + return res; +} +#define INIT_SYSINFO COMMON_INTERCEPT_FUNCTION(sysinfo); +#else +#define INIT_SYSINFO +#endif + +#if SANITIZER_INTERCEPT_READDIR +INTERCEPTOR(__sanitizer_dirent *, opendir, const char *path) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, opendir, path); + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + __sanitizer_dirent *res = REAL(opendir)(path); + if (res) + COMMON_INTERCEPTOR_DIR_ACQUIRE(ctx, path); + return res; +} + +INTERCEPTOR(__sanitizer_dirent *, readdir, void *dirp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, readdir, dirp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + __sanitizer_dirent *res = REAL(readdir)(dirp); + if (res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer_dirsiz(res)); + return res; +} + +INTERCEPTOR(int, readdir_r, void *dirp, __sanitizer_dirent *entry, + __sanitizer_dirent **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, readdir_r, dirp, entry, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(readdir_r)(dirp, entry, result); + if (!res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + if (*result) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, __sanitizer_dirsiz(*result)); + } + return res; +} + +#define INIT_READDIR \ + COMMON_INTERCEPT_FUNCTION(opendir); \ + COMMON_INTERCEPT_FUNCTION(readdir); \ + COMMON_INTERCEPT_FUNCTION(readdir_r); +#else +#define INIT_READDIR +#endif + +#if SANITIZER_INTERCEPT_READDIR64 +INTERCEPTOR(__sanitizer_dirent64 *, readdir64, void *dirp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, readdir64, dirp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + __sanitizer_dirent64 *res = REAL(readdir64)(dirp); + if (res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer_dirsiz(res)); + return res; +} + +INTERCEPTOR(int, readdir64_r, void *dirp, __sanitizer_dirent64 *entry, + __sanitizer_dirent64 **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, readdir64_r, dirp, entry, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(readdir64_r)(dirp, entry, result); + if (!res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + if (*result) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *result, __sanitizer_dirsiz(*result)); + } + return res; +} +#define INIT_READDIR64 \ + COMMON_INTERCEPT_FUNCTION(readdir64); \ + COMMON_INTERCEPT_FUNCTION(readdir64_r); +#else +#define INIT_READDIR64 +#endif + +#if SANITIZER_INTERCEPT_PTRACE +INTERCEPTOR(uptr, ptrace, int request, int pid, void *addr, void *data) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ptrace, request, pid, addr, data); + __sanitizer_iovec local_iovec; + + void *data_arg = ptrace_data_arg(request, addr, data); + if (data_arg) { + if (request == ptrace_setregs) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg, struct_user_regs_struct_sz); + } else if (request == ptrace_setfpregs) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg, + struct_user_fpregs_struct_sz); + } else if (request == ptrace_setfpxregs) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg, + struct_user_fpxregs_struct_sz); + } else if (request == ptrace_setvfpregs) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg, + struct_user_vfpregs_struct_sz); + } else if (request == ptrace_setsiginfo) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, data_arg, siginfo_t_sz); + + // Some kernel might zero the iovec::iov_base in case of invalid + // write access. In this case copy the invalid address for further + // inspection. + } else if (request == ptrace_setregset || request == ptrace_getregset) { + __sanitizer_iovec *iovec = (__sanitizer_iovec *)data_arg; + COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec, sizeof(*iovec)); + local_iovec = *iovec; + if (request == ptrace_setregset) + COMMON_INTERCEPTOR_READ_RANGE(ctx, iovec->iov_base, iovec->iov_len); + } + } + + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + uptr res = REAL(ptrace)(request, pid, addr, data); + + if (!res && data_arg) { + // Note that PEEK* requests assign different meaning to the return value. + // This function does not handle them (nor does it need to). + if (request == ptrace_getregs) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, struct_user_regs_struct_sz); + } else if (request == ptrace_getfpregs) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, + struct_user_fpregs_struct_sz); + } else if (request == ptrace_getfpxregs) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, + struct_user_fpxregs_struct_sz); + } else if (request == ptrace_getvfpregs) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, + struct_user_vfpregs_struct_sz); + } else if (request == ptrace_getsiginfo) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, siginfo_t_sz); + } else if (request == ptrace_geteventmsg) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data_arg, sizeof(unsigned long)); + } else if (request == ptrace_getregset) { + __sanitizer_iovec *iovec = (__sanitizer_iovec *)data_arg; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, iovec, sizeof(*iovec)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, local_iovec.iov_base, + local_iovec.iov_len); + } + } + return res; +} + +#define INIT_PTRACE COMMON_INTERCEPT_FUNCTION(ptrace); +#else +#define INIT_PTRACE +#endif + +#if SANITIZER_INTERCEPT_SETLOCALE +static void unpoison_ctype_arrays(void *ctx) { +#if SANITIZER_NETBSD + // These arrays contain 256 regular elements in unsigned char range + 1 EOF + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _ctype_tab_, 257 * sizeof(short)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _toupper_tab_, 257 * sizeof(short)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, _tolower_tab_, 257 * sizeof(short)); +#endif +} + +INTERCEPTOR(char *, setlocale, int category, char *locale) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setlocale, category, locale); + if (locale) + COMMON_INTERCEPTOR_READ_RANGE(ctx, locale, internal_strlen(locale) + 1); + char *res = REAL(setlocale)(category, locale); + if (res) { + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + unpoison_ctype_arrays(ctx); + } + return res; +} + +#define INIT_SETLOCALE COMMON_INTERCEPT_FUNCTION(setlocale); +#else +#define INIT_SETLOCALE +#endif + +#if SANITIZER_INTERCEPT_GETCWD +INTERCEPTOR(char *, getcwd, char *buf, SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getcwd, buf, size); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(getcwd)(buf, size); + if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} +#define INIT_GETCWD COMMON_INTERCEPT_FUNCTION(getcwd); +#else +#define INIT_GETCWD +#endif + +#if SANITIZER_INTERCEPT_GET_CURRENT_DIR_NAME +INTERCEPTOR(char *, get_current_dir_name, int fake) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, get_current_dir_name, fake); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(get_current_dir_name)(fake); + if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} + +#define INIT_GET_CURRENT_DIR_NAME \ + COMMON_INTERCEPT_FUNCTION(get_current_dir_name); +#else +#define INIT_GET_CURRENT_DIR_NAME +#endif + +UNUSED static inline void FixRealStrtolEndptr(const char *nptr, char **endptr) { + CHECK(endptr); + if (nptr == *endptr) { + // No digits were found at strtol call, we need to find out the last + // symbol accessed by strtoll on our own. + // We get this symbol by skipping leading blanks and optional +/- sign. + while (IsSpace(*nptr)) nptr++; + if (*nptr == '+' || *nptr == '-') nptr++; + *endptr = const_cast<char *>(nptr); + } + CHECK(*endptr >= nptr); +} + +UNUSED static inline void StrtolFixAndCheck(void *ctx, const char *nptr, + char **endptr, char *real_endptr, int base) { + if (endptr) { + *endptr = real_endptr; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, endptr, sizeof(*endptr)); + } + // If base has unsupported value, strtol can exit with EINVAL + // without reading any characters. So do additional checks only + // if base is valid. + bool is_valid_base = (base == 0) || (2 <= base && base <= 36); + if (is_valid_base) { + FixRealStrtolEndptr(nptr, &real_endptr); + } + COMMON_INTERCEPTOR_READ_STRING(ctx, nptr, is_valid_base ? + (real_endptr - nptr) + 1 : 0); +} + +#if SANITIZER_INTERCEPT_STRTOIMAX +template <typename Fn> +static ALWAYS_INLINE auto StrtoimaxImpl(void *ctx, Fn real, const char *nptr, + char **endptr, int base) + -> decltype(real(nullptr, nullptr, 0)) { + char *real_endptr; + auto res = real(nptr, &real_endptr, base); + StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); + return res; +} + +INTERCEPTOR(INTMAX_T, strtoimax, const char *nptr, char **endptr, int base) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strtoimax, nptr, endptr, base); + return StrtoimaxImpl(ctx, REAL(strtoimax), nptr, endptr, base); +} +INTERCEPTOR(UINTMAX_T, strtoumax, const char *nptr, char **endptr, int base) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strtoumax, nptr, endptr, base); + return StrtoimaxImpl(ctx, REAL(strtoumax), nptr, endptr, base); +} + +#define INIT_STRTOIMAX \ + COMMON_INTERCEPT_FUNCTION(strtoimax); \ + COMMON_INTERCEPT_FUNCTION(strtoumax); +#else +#define INIT_STRTOIMAX +#endif + +#if SANITIZER_INTERCEPT_STRTOIMAX && SANITIZER_GLIBC +INTERCEPTOR(INTMAX_T, __isoc23_strtoimax, const char *nptr, char **endptr, int base) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __isoc23_strtoimax, nptr, endptr, base); + return StrtoimaxImpl(ctx, REAL(__isoc23_strtoimax), nptr, endptr, base); +} +INTERCEPTOR(UINTMAX_T, __isoc23_strtoumax, const char *nptr, char **endptr, int base) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __isoc23_strtoumax, nptr, endptr, base); + return StrtoimaxImpl(ctx, REAL(__isoc23_strtoumax), nptr, endptr, base); +} + +# define INIT_STRTOIMAX_C23 \ + COMMON_INTERCEPT_FUNCTION(__isoc23_strtoimax); \ + COMMON_INTERCEPT_FUNCTION(__isoc23_strtoumax); +#else +# define INIT_STRTOIMAX_C23 +#endif + +#if SANITIZER_INTERCEPT_MBSTOWCS +INTERCEPTOR(SIZE_T, mbstowcs, wchar_t *dest, const char *src, SIZE_T len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, mbstowcs, dest, src, len); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(mbstowcs)(dest, src, len); + if (res != (SIZE_T) - 1 && dest) { + SIZE_T write_cnt = res + (res < len); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); + } + return res; +} + +INTERCEPTOR(SIZE_T, mbsrtowcs, wchar_t *dest, const char **src, SIZE_T len, + void *ps) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, mbsrtowcs, dest, src, len, ps); + if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); + if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(mbsrtowcs)(dest, src, len, ps); + if (res != (SIZE_T)(-1) && dest && src) { + // This function, and several others, may or may not write the terminating + // \0 character. They write it iff they clear *src. + SIZE_T write_cnt = res + !*src; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); + } + return res; +} + +#define INIT_MBSTOWCS \ + COMMON_INTERCEPT_FUNCTION(mbstowcs); \ + COMMON_INTERCEPT_FUNCTION(mbsrtowcs); +#else +#define INIT_MBSTOWCS +#endif + +#if SANITIZER_INTERCEPT_MBSNRTOWCS +INTERCEPTOR(SIZE_T, mbsnrtowcs, wchar_t *dest, const char **src, SIZE_T nms, + SIZE_T len, void *ps) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, mbsnrtowcs, dest, src, nms, len, ps); + if (src) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); + if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms); + } + if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(mbsnrtowcs)(dest, src, nms, len, ps); + if (res != (SIZE_T)(-1) && dest && src) { + SIZE_T write_cnt = res + !*src; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt * sizeof(wchar_t)); + } + return res; +} + +#define INIT_MBSNRTOWCS COMMON_INTERCEPT_FUNCTION(mbsnrtowcs); +#else +#define INIT_MBSNRTOWCS +#endif + +#if SANITIZER_INTERCEPT_WCSTOMBS +INTERCEPTOR(SIZE_T, wcstombs, char *dest, const wchar_t *src, SIZE_T len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcstombs, dest, src, len); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(wcstombs)(dest, src, len); + if (res != (SIZE_T) - 1 && dest) { + SIZE_T write_cnt = res + (res < len); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); + } + return res; +} + +INTERCEPTOR(SIZE_T, wcsrtombs, char *dest, const wchar_t **src, SIZE_T len, + void *ps) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcsrtombs, dest, src, len, ps); + if (src) COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); + if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(wcsrtombs)(dest, src, len, ps); + if (res != (SIZE_T) - 1 && dest && src) { + SIZE_T write_cnt = res + !*src; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); + } + return res; +} + +#define INIT_WCSTOMBS \ + COMMON_INTERCEPT_FUNCTION(wcstombs); \ + COMMON_INTERCEPT_FUNCTION(wcsrtombs); +#else +#define INIT_WCSTOMBS +#endif + +#if SANITIZER_INTERCEPT_WCSNRTOMBS +INTERCEPTOR(SIZE_T, wcsnrtombs, char *dest, const wchar_t **src, SIZE_T nms, + SIZE_T len, void *ps) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcsnrtombs, dest, src, nms, len, ps); + if (src) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); + if (nms) COMMON_INTERCEPTOR_READ_RANGE(ctx, *src, nms); + } + if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(wcsnrtombs)(dest, src, nms, len, ps); + if (res != ((SIZE_T)-1) && dest && src) { + SIZE_T write_cnt = res + !*src; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, write_cnt); + } + return res; +} + +#define INIT_WCSNRTOMBS COMMON_INTERCEPT_FUNCTION(wcsnrtombs); +#else +#define INIT_WCSNRTOMBS +#endif + + +#if SANITIZER_INTERCEPT_WCRTOMB +INTERCEPTOR(SIZE_T, wcrtomb, char *dest, wchar_t src, void *ps) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcrtomb, dest, src, ps); + if (ps) COMMON_INTERCEPTOR_READ_RANGE(ctx, ps, mbstate_t_sz); + + if (!dest) + return REAL(wcrtomb)(dest, src, ps); + + char local_dest[32]; + SIZE_T res = REAL(wcrtomb)(local_dest, src, ps); + if (res != ((SIZE_T)-1)) { + CHECK_LE(res, sizeof(local_dest)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res); + REAL(memcpy)(dest, local_dest, res); + } + return res; +} + +#define INIT_WCRTOMB COMMON_INTERCEPT_FUNCTION(wcrtomb); +#else +#define INIT_WCRTOMB +#endif + +#if SANITIZER_INTERCEPT_WCTOMB +INTERCEPTOR(int, wctomb, char *dest, wchar_t src) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wctomb, dest, src); + if (!dest) + return REAL(wctomb)(dest, src); + + char local_dest[32]; + int res = REAL(wctomb)(local_dest, src); + if (res != -1) { + CHECK_LE(res, sizeof(local_dest)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, res); + REAL(memcpy)(dest, local_dest, res); + } + return res; +} + +#define INIT_WCTOMB COMMON_INTERCEPT_FUNCTION(wctomb); +#else +#define INIT_WCTOMB +#endif + +#if SANITIZER_INTERCEPT_TCGETATTR +INTERCEPTOR(int, tcgetattr, int fd, void *termios_p) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, tcgetattr, fd, termios_p); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(tcgetattr)(fd, termios_p); + if (!res && termios_p) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, termios_p, struct_termios_sz); + return res; +} + +#define INIT_TCGETATTR COMMON_INTERCEPT_FUNCTION(tcgetattr); +#else +#define INIT_TCGETATTR +#endif + +#if SANITIZER_INTERCEPT_REALPATH +INTERCEPTOR(char *, realpath, const char *path, char *resolved_path) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, realpath, path, resolved_path); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + + // Workaround a bug in glibc where dlsym(RTLD_NEXT, ...) returns the oldest + // version of a versioned symbol. For realpath(), this gives us something + // (called __old_realpath) that does not handle NULL in the second argument. + // Handle it as part of the interceptor. + char *allocated_path = nullptr; + if (!resolved_path) + allocated_path = resolved_path = (char *)WRAP(malloc)(path_max + 1); + + char *res = REAL(realpath)(path, resolved_path); + if (allocated_path && !res) + WRAP(free)(allocated_path); + if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} +# define INIT_REALPATH COMMON_INTERCEPT_FUNCTION(realpath); +#else +#define INIT_REALPATH +#endif + +#if SANITIZER_INTERCEPT_CANONICALIZE_FILE_NAME +INTERCEPTOR(char *, canonicalize_file_name, const char *path) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, canonicalize_file_name, path); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + char *res = REAL(canonicalize_file_name)(path); + if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} +#define INIT_CANONICALIZE_FILE_NAME \ + COMMON_INTERCEPT_FUNCTION(canonicalize_file_name); +#else +#define INIT_CANONICALIZE_FILE_NAME +#endif + +#if SANITIZER_INTERCEPT_CONFSTR +INTERCEPTOR(SIZE_T, confstr, int name, char *buf, SIZE_T len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, confstr, name, buf, len); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(confstr)(name, buf, len); + if (buf && res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res < len ? res : len); + return res; +} +#define INIT_CONFSTR COMMON_INTERCEPT_FUNCTION(confstr); +#else +#define INIT_CONFSTR +#endif + +#if SANITIZER_INTERCEPT_SCHED_GETAFFINITY +INTERCEPTOR(int, sched_getaffinity, int pid, SIZE_T cpusetsize, void *mask) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sched_getaffinity, pid, cpusetsize, mask); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(sched_getaffinity)(pid, cpusetsize, mask); + if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize); + return res; +} +#define INIT_SCHED_GETAFFINITY COMMON_INTERCEPT_FUNCTION(sched_getaffinity); +#else +#define INIT_SCHED_GETAFFINITY +#endif + +#if SANITIZER_INTERCEPT_SCHED_GETPARAM +INTERCEPTOR(int, sched_getparam, int pid, void *param) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sched_getparam, pid, param); + int res = REAL(sched_getparam)(pid, param); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, param, struct_sched_param_sz); + return res; +} +#define INIT_SCHED_GETPARAM COMMON_INTERCEPT_FUNCTION(sched_getparam); +#else +#define INIT_SCHED_GETPARAM +#endif + +#if SANITIZER_INTERCEPT_STRERROR +INTERCEPTOR(char *, strerror, int errnum) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strerror, errnum); + COMMON_INTERCEPTOR_STRERROR(); + char *res = REAL(strerror)(errnum); + if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + return res; +} +#define INIT_STRERROR COMMON_INTERCEPT_FUNCTION(strerror); +#else +#define INIT_STRERROR +#endif + +#if SANITIZER_INTERCEPT_STRERROR_R +// There are 2 versions of strerror_r: +// * POSIX version returns 0 on success, negative error code on failure, +// writes message to buf. +// * GNU version returns message pointer, which points to either buf or some +// static storage. +#if ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE) || \ + SANITIZER_APPLE || SANITIZER_ANDROID || SANITIZER_NETBSD || \ + SANITIZER_FREEBSD +// POSIX version. Spec is not clear on whether buf is NULL-terminated. +// At least on OSX, buf contents are valid even when the call fails. +INTERCEPTOR(int, strerror_r, int errnum, char *buf, SIZE_T buflen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(strerror_r)(errnum, buf, buflen); + + SIZE_T sz = internal_strnlen(buf, buflen); + if (sz < buflen) ++sz; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz); + return res; +} +#else +// GNU version. +INTERCEPTOR(char *, strerror_r, int errnum, char *buf, SIZE_T buflen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strerror_r, errnum, buf, buflen); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(strerror_r)(errnum, buf, buflen); + if (res == buf) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + else + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + return res; +} +#endif //(_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE || + //SANITIZER_APPLE +#define INIT_STRERROR_R COMMON_INTERCEPT_FUNCTION(strerror_r); +#else +#define INIT_STRERROR_R +#endif + +#if SANITIZER_INTERCEPT_XPG_STRERROR_R +INTERCEPTOR(int, __xpg_strerror_r, int errnum, char *buf, SIZE_T buflen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __xpg_strerror_r, errnum, buf, buflen); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(__xpg_strerror_r)(errnum, buf, buflen); + // This version always returns a null-terminated string. + if (buf && buflen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1); + return res; +} +#define INIT_XPG_STRERROR_R COMMON_INTERCEPT_FUNCTION(__xpg_strerror_r); +#else +#define INIT_XPG_STRERROR_R +#endif + +#if SANITIZER_INTERCEPT_SCANDIR +typedef int (*scandir_filter_f)(const struct __sanitizer_dirent *); +typedef int (*scandir_compar_f)(const struct __sanitizer_dirent **, + const struct __sanitizer_dirent **); + +static THREADLOCAL scandir_filter_f scandir_filter; +static THREADLOCAL scandir_compar_f scandir_compar; + +static int wrapped_scandir_filter(const struct __sanitizer_dirent *dir) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, __sanitizer_dirsiz(dir)); + return scandir_filter(dir); +} + +static int wrapped_scandir_compar(const struct __sanitizer_dirent **a, + const struct __sanitizer_dirent **b) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(2); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a)); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, __sanitizer_dirsiz(*a)); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b)); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, __sanitizer_dirsiz(*b)); + return scandir_compar(a, b); +} + +INTERCEPTOR(int, scandir, char *dirp, __sanitizer_dirent ***namelist, + scandir_filter_f filter, scandir_compar_f compar) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, scandir, dirp, namelist, filter, compar); + if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1); + scandir_filter = filter; + scandir_compar = compar; + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(scandir)(dirp, namelist, + filter ? wrapped_scandir_filter : nullptr, + compar ? wrapped_scandir_compar : nullptr); + scandir_filter = nullptr; + scandir_compar = nullptr; + if (namelist && res > 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res); + for (int i = 0; i < res; ++i) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i], + __sanitizer_dirsiz((*namelist)[i])); + } + return res; +} +#define INIT_SCANDIR COMMON_INTERCEPT_FUNCTION(scandir); +#else +#define INIT_SCANDIR +#endif + +#if SANITIZER_INTERCEPT_SCANDIR64 +typedef int (*scandir64_filter_f)(const struct __sanitizer_dirent64 *); +typedef int (*scandir64_compar_f)(const struct __sanitizer_dirent64 **, + const struct __sanitizer_dirent64 **); + +static THREADLOCAL scandir64_filter_f scandir64_filter; +static THREADLOCAL scandir64_compar_f scandir64_compar; + +static int wrapped_scandir64_filter(const struct __sanitizer_dirent64 *dir) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(dir, __sanitizer_dirsiz(dir)); + return scandir64_filter(dir); +} + +static int wrapped_scandir64_compar(const struct __sanitizer_dirent64 **a, + const struct __sanitizer_dirent64 **b) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(2); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, sizeof(*a)); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(*a, __sanitizer_dirsiz(*a)); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, sizeof(*b)); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(*b, __sanitizer_dirsiz(*b)); + return scandir64_compar(a, b); +} + +INTERCEPTOR(int, scandir64, char *dirp, __sanitizer_dirent64 ***namelist, + scandir64_filter_f filter, scandir64_compar_f compar) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, scandir64, dirp, namelist, filter, compar); + if (dirp) COMMON_INTERCEPTOR_READ_RANGE(ctx, dirp, internal_strlen(dirp) + 1); + scandir64_filter = filter; + scandir64_compar = compar; + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = + REAL(scandir64)(dirp, namelist, + filter ? wrapped_scandir64_filter : nullptr, + compar ? wrapped_scandir64_compar : nullptr); + scandir64_filter = nullptr; + scandir64_compar = nullptr; + if (namelist && res > 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelist, sizeof(*namelist)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *namelist, sizeof(**namelist) * res); + for (int i = 0; i < res; ++i) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (*namelist)[i], + __sanitizer_dirsiz((*namelist)[i])); + } + return res; +} +#define INIT_SCANDIR64 COMMON_INTERCEPT_FUNCTION(scandir64); +#else +#define INIT_SCANDIR64 +#endif + +#if SANITIZER_INTERCEPT_GETGROUPS +INTERCEPTOR(int, getgroups, int size, u32 *lst) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getgroups, size, lst); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getgroups)(size, lst); + if (res >= 0 && lst && size > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lst, res * sizeof(*lst)); + return res; +} +#define INIT_GETGROUPS COMMON_INTERCEPT_FUNCTION(getgroups); +#else +#define INIT_GETGROUPS +#endif + +#if SANITIZER_INTERCEPT_POLL +static void read_pollfd(void *ctx, __sanitizer_pollfd *fds, + __sanitizer_nfds_t nfds) { + for (unsigned i = 0; i < nfds; ++i) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].fd, sizeof(fds[i].fd)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &fds[i].events, sizeof(fds[i].events)); + } +} + +static void write_pollfd(void *ctx, __sanitizer_pollfd *fds, + __sanitizer_nfds_t nfds) { + for (unsigned i = 0; i < nfds; ++i) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &fds[i].revents, + sizeof(fds[i].revents)); +} + +INTERCEPTOR(int, poll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds, + int timeout) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, poll, fds, nfds, timeout); + if (fds && nfds) read_pollfd(ctx, fds, nfds); + int res = COMMON_INTERCEPTOR_BLOCK_REAL(poll)(fds, nfds, timeout); + if (fds && nfds) write_pollfd(ctx, fds, nfds); + return res; +} +#define INIT_POLL COMMON_INTERCEPT_FUNCTION(poll); +#else +#define INIT_POLL +#endif + +#if SANITIZER_INTERCEPT_PPOLL +INTERCEPTOR(int, ppoll, __sanitizer_pollfd *fds, __sanitizer_nfds_t nfds, + void *timeout_ts, __sanitizer_sigset_t *sigmask) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ppoll, fds, nfds, timeout_ts, sigmask); + if (fds && nfds) read_pollfd(ctx, fds, nfds); + if (timeout_ts) + COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout_ts, struct_timespec_sz); + if (sigmask) COMMON_INTERCEPTOR_READ_RANGE(ctx, sigmask, sizeof(*sigmask)); + int res = + COMMON_INTERCEPTOR_BLOCK_REAL(ppoll)(fds, nfds, timeout_ts, sigmask); + if (fds && nfds) write_pollfd(ctx, fds, nfds); + return res; +} +#define INIT_PPOLL COMMON_INTERCEPT_FUNCTION(ppoll); +#else +#define INIT_PPOLL +#endif + +#if SANITIZER_INTERCEPT_WORDEXP +INTERCEPTOR(int, wordexp, char *s, __sanitizer_wordexp_t *p, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wordexp, s, p, flags); + if (s) COMMON_INTERCEPTOR_READ_RANGE(ctx, s, internal_strlen(s) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(wordexp)(s, p, flags); + if (!res && p) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); + uptr we_wordc = + ((flags & wordexp_wrde_dooffs) ? p->we_offs : 0) + p->we_wordc; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->we_wordv, + sizeof(*p->we_wordv) * (we_wordc + 1)); + for (uptr i = 0; i < we_wordc; ++i) { + char *w = p->we_wordv[i]; + if (w) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, w, internal_strlen(w) + 1); + } + } + return res; +} +#define INIT_WORDEXP COMMON_INTERCEPT_FUNCTION(wordexp); +#else +#define INIT_WORDEXP +#endif + +#if SANITIZER_INTERCEPT_SIGWAIT +INTERCEPTOR(int, sigwait, __sanitizer_sigset_t *set, int *sig) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigwait, set, sig); + if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwait)(set, sig); + if (!res && sig) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sig, sizeof(*sig)); + return res; +} +#define INIT_SIGWAIT COMMON_INTERCEPT_FUNCTION(sigwait); +#else +#define INIT_SIGWAIT +#endif + +#if SANITIZER_INTERCEPT_SIGWAITINFO +INTERCEPTOR(int, sigwaitinfo, __sanitizer_sigset_t *set, void *info) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigwaitinfo, set, info); + if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigwaitinfo)(set, info); + if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz); + return res; +} +#define INIT_SIGWAITINFO COMMON_INTERCEPT_FUNCTION(sigwaitinfo); +#else +#define INIT_SIGWAITINFO +#endif + +#if SANITIZER_INTERCEPT_SIGTIMEDWAIT +INTERCEPTOR(int, sigtimedwait, __sanitizer_sigset_t *set, void *info, + void *timeout) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigtimedwait, set, info, timeout); + if (timeout) COMMON_INTERCEPTOR_READ_RANGE(ctx, timeout, struct_timespec_sz); + if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = COMMON_INTERCEPTOR_BLOCK_REAL(sigtimedwait)(set, info, timeout); + if (res > 0 && info) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, info, siginfo_t_sz); + return res; +} +#define INIT_SIGTIMEDWAIT COMMON_INTERCEPT_FUNCTION(sigtimedwait); +#else +#define INIT_SIGTIMEDWAIT +#endif + +#if SANITIZER_INTERCEPT_SIGSETOPS +INTERCEPTOR(int, sigemptyset, __sanitizer_sigset_t *set) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigemptyset, set); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(sigemptyset)(set); + if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); + return res; +} + +INTERCEPTOR(int, sigfillset, __sanitizer_sigset_t *set) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigfillset, set); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(sigfillset)(set); + if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); + return res; +} +#define INIT_SIGSETOPS \ + COMMON_INTERCEPT_FUNCTION(sigemptyset); \ + COMMON_INTERCEPT_FUNCTION(sigfillset); +#else +#define INIT_SIGSETOPS +#endif + +#if SANITIZER_INTERCEPT_SIGSET_LOGICOPS +INTERCEPTOR(int, sigandset, __sanitizer_sigset_t *dst, + __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigandset, dst, src1, src2); + if (src1) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1)); + if (src2) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2)); + int res = REAL(sigandset)(dst, src1, src2); + if (!res && dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); + return res; +} + +INTERCEPTOR(int, sigorset, __sanitizer_sigset_t *dst, + __sanitizer_sigset_t *src1, __sanitizer_sigset_t *src2) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigorset, dst, src1, src2); + if (src1) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src1, sizeof(*src1)); + if (src2) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src2, sizeof(*src2)); + int res = REAL(sigorset)(dst, src1, src2); + if (!res && dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); + return res; +} +#define INIT_SIGSET_LOGICOPS \ + COMMON_INTERCEPT_FUNCTION(sigandset); \ + COMMON_INTERCEPT_FUNCTION(sigorset); +#else +#define INIT_SIGSET_LOGICOPS +#endif + +#if SANITIZER_INTERCEPT_SIGPENDING +INTERCEPTOR(int, sigpending, __sanitizer_sigset_t *set) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigpending, set); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(sigpending)(set); + if (!res && set) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, set, sizeof(*set)); + return res; +} +#define INIT_SIGPENDING COMMON_INTERCEPT_FUNCTION(sigpending); +#else +#define INIT_SIGPENDING +#endif + +#if SANITIZER_INTERCEPT_SIGPROCMASK +INTERCEPTOR(int, sigprocmask, int how, __sanitizer_sigset_t *set, + __sanitizer_sigset_t *oldset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigprocmask, how, set, oldset); + if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(sigprocmask)(how, set, oldset); + if (!res && oldset) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset)); + return res; +} +#define INIT_SIGPROCMASK COMMON_INTERCEPT_FUNCTION(sigprocmask); +#else +#define INIT_SIGPROCMASK +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_SIGMASK +INTERCEPTOR(int, pthread_sigmask, int how, __sanitizer_sigset_t *set, + __sanitizer_sigset_t *oldset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_sigmask, how, set, oldset); + if (set) COMMON_INTERCEPTOR_READ_RANGE(ctx, set, sizeof(*set)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(pthread_sigmask)(how, set, oldset); + if (!res && oldset) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldset, sizeof(*oldset)); + return res; +} +#define INIT_PTHREAD_SIGMASK COMMON_INTERCEPT_FUNCTION(pthread_sigmask); +#else +#define INIT_PTHREAD_SIGMASK +#endif + +#if SANITIZER_INTERCEPT_BACKTRACE +INTERCEPTOR(int, backtrace, void **buffer, int size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, backtrace, buffer, size); + // 'buffer' might be freed memory, hence it is unsafe to directly call + // REAL(backtrace)(buffer, size). Instead, we use our own known-good + // scratch buffer. + void **scratch = (void**)InternalAlloc(sizeof(void*) * size); + int res = REAL(backtrace)(scratch, size); + if (res && buffer) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buffer, res * sizeof(*buffer)); + internal_memcpy(buffer, scratch, res * sizeof(*buffer)); + } + InternalFree(scratch); + return res; +} + +INTERCEPTOR(char **, backtrace_symbols, void **buffer, int size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, backtrace_symbols, buffer, size); + if (buffer && size) + COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, size * sizeof(*buffer)); + // The COMMON_INTERCEPTOR_READ_RANGE above ensures that 'buffer' is + // valid for reading. + char **res = REAL(backtrace_symbols)(buffer, size); + if (res && size) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, size * sizeof(*res)); + for (int i = 0; i < size; ++i) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res[i], internal_strlen(res[i]) + 1); + } + return res; +} +#define INIT_BACKTRACE \ + COMMON_INTERCEPT_FUNCTION(backtrace); \ + COMMON_INTERCEPT_FUNCTION(backtrace_symbols); +#else +#define INIT_BACKTRACE +#endif + +#if SANITIZER_INTERCEPT__EXIT +INTERCEPTOR(void, _exit, int status) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, _exit, status); + COMMON_INTERCEPTOR_USER_CALLBACK_START(); + int status1 = COMMON_INTERCEPTOR_ON_EXIT(ctx); + COMMON_INTERCEPTOR_USER_CALLBACK_END(); + if (status == 0) status = status1; + REAL(_exit)(status); +} +#define INIT__EXIT COMMON_INTERCEPT_FUNCTION(_exit); +#else +#define INIT__EXIT +#endif + +#if SANITIZER_INTERCEPT___LIBC_MUTEX +INTERCEPTOR(int, __libc_thr_setcancelstate, int state, int *oldstate) +ALIAS(WRAP(pthread_setcancelstate)); + +#define INIT___LIBC_THR_SETCANCELSTATE \ + COMMON_INTERCEPT_FUNCTION(__libc_thr_setcancelstate) +#else +#define INIT___LIBC_THR_SETCANCELSTATE +#endif + +#if SANITIZER_INTERCEPT_GETMNTENT || SANITIZER_INTERCEPT_GETMNTENT_R +static void write_mntent(void *ctx, __sanitizer_mntent *mnt) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt, sizeof(*mnt)); + if (mnt->mnt_fsname) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_fsname, + internal_strlen(mnt->mnt_fsname) + 1); + if (mnt->mnt_dir) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_dir, + internal_strlen(mnt->mnt_dir) + 1); + if (mnt->mnt_type) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_type, + internal_strlen(mnt->mnt_type) + 1); + if (mnt->mnt_opts) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mnt->mnt_opts, + internal_strlen(mnt->mnt_opts) + 1); +} +#endif + +#if SANITIZER_INTERCEPT_GETMNTENT +INTERCEPTOR(__sanitizer_mntent *, getmntent, void *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getmntent, fp); + __sanitizer_mntent *res = REAL(getmntent)(fp); + if (res) write_mntent(ctx, res); + return res; +} +#define INIT_GETMNTENT COMMON_INTERCEPT_FUNCTION(getmntent); +#else +#define INIT_GETMNTENT +#endif + +#if SANITIZER_INTERCEPT_GETMNTENT_R +INTERCEPTOR(__sanitizer_mntent *, getmntent_r, void *fp, + __sanitizer_mntent *mntbuf, char *buf, int buflen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getmntent_r, fp, mntbuf, buf, buflen); + __sanitizer_mntent *res = REAL(getmntent_r)(fp, mntbuf, buf, buflen); + if (res) write_mntent(ctx, res); + return res; +} +#define INIT_GETMNTENT_R COMMON_INTERCEPT_FUNCTION(getmntent_r); +#else +#define INIT_GETMNTENT_R +#endif + +#if SANITIZER_INTERCEPT_STATFS +INTERCEPTOR(int, statfs, char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, statfs, path, buf); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(statfs)(path, buf); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz); + return res; +} +INTERCEPTOR(int, fstatfs, int fd, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fstatfs, fd, buf); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(fstatfs)(fd, buf); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs_sz); + return res; +} +#define INIT_STATFS \ + COMMON_INTERCEPT_FUNCTION(statfs); \ + COMMON_INTERCEPT_FUNCTION(fstatfs); +#else +#define INIT_STATFS +#endif + +#if SANITIZER_INTERCEPT_STATFS64 +INTERCEPTOR(int, statfs64, char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, statfs64, path, buf); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(statfs64)(path, buf); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz); + return res; +} +INTERCEPTOR(int, fstatfs64, int fd, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fstatfs64, fd, buf); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(fstatfs64)(fd, buf); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statfs64_sz); + return res; +} +#define INIT_STATFS64 \ + COMMON_INTERCEPT_FUNCTION(statfs64); \ + COMMON_INTERCEPT_FUNCTION(fstatfs64); +#else +#define INIT_STATFS64 +#endif + +#if SANITIZER_INTERCEPT_STATVFS +INTERCEPTOR(int, statvfs, char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, statvfs, path, buf); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(statvfs)(path, buf); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); + return res; +} +INTERCEPTOR(int, fstatvfs, int fd, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs, fd, buf); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(fstatvfs)(fd, buf); + if (!res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); + if (fd >= 0) + COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + } + return res; +} +#define INIT_STATVFS \ + COMMON_INTERCEPT_FUNCTION(statvfs); \ + COMMON_INTERCEPT_FUNCTION(fstatvfs); +#else +#define INIT_STATVFS +#endif + +#if SANITIZER_INTERCEPT_STATVFS64 +INTERCEPTOR(int, statvfs64, char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, statvfs64, path, buf); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(statvfs64)(path, buf); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz); + return res; +} +INTERCEPTOR(int, fstatvfs64, int fd, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs64, fd, buf); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(fstatvfs64)(fd, buf); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs64_sz); + return res; +} +#define INIT_STATVFS64 \ + COMMON_INTERCEPT_FUNCTION(statvfs64); \ + COMMON_INTERCEPT_FUNCTION(fstatvfs64); +#else +#define INIT_STATVFS64 +#endif + +#if SANITIZER_INTERCEPT_INITGROUPS +INTERCEPTOR(int, initgroups, char *user, u32 group) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, initgroups, user, group); + if (user) COMMON_INTERCEPTOR_READ_RANGE(ctx, user, internal_strlen(user) + 1); + int res = REAL(initgroups)(user, group); + return res; +} +#define INIT_INITGROUPS COMMON_INTERCEPT_FUNCTION(initgroups); +#else +#define INIT_INITGROUPS +#endif + +#if SANITIZER_INTERCEPT_ETHER_NTOA_ATON +INTERCEPTOR(char *, ether_ntoa, __sanitizer_ether_addr *addr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa, addr); + if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); + char *res = REAL(ether_ntoa)(addr); + if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + return res; +} +INTERCEPTOR(__sanitizer_ether_addr *, ether_aton, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ether_aton, buf); + if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1); + __sanitizer_ether_addr *res = REAL(ether_aton)(buf); + if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, sizeof(*res)); + return res; +} +#define INIT_ETHER_NTOA_ATON \ + COMMON_INTERCEPT_FUNCTION(ether_ntoa); \ + COMMON_INTERCEPT_FUNCTION(ether_aton); +#else +#define INIT_ETHER_NTOA_ATON +#endif + +#if SANITIZER_INTERCEPT_ETHER_HOST +INTERCEPTOR(int, ether_ntohost, char *hostname, __sanitizer_ether_addr *addr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ether_ntohost, hostname, addr); + if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(ether_ntohost)(hostname, addr); + if (!res && hostname) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1); + return res; +} +INTERCEPTOR(int, ether_hostton, char *hostname, __sanitizer_ether_addr *addr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ether_hostton, hostname, addr); + if (hostname) + COMMON_INTERCEPTOR_READ_RANGE(ctx, hostname, internal_strlen(hostname) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(ether_hostton)(hostname, addr); + if (!res && addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); + return res; +} +INTERCEPTOR(int, ether_line, char *line, __sanitizer_ether_addr *addr, + char *hostname) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ether_line, line, addr, hostname); + if (line) COMMON_INTERCEPTOR_READ_RANGE(ctx, line, internal_strlen(line) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(ether_line)(line, addr, hostname); + if (!res) { + if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); + if (hostname) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hostname, internal_strlen(hostname) + 1); + } + return res; +} +#define INIT_ETHER_HOST \ + COMMON_INTERCEPT_FUNCTION(ether_ntohost); \ + COMMON_INTERCEPT_FUNCTION(ether_hostton); \ + COMMON_INTERCEPT_FUNCTION(ether_line); +#else +#define INIT_ETHER_HOST +#endif + +#if SANITIZER_INTERCEPT_ETHER_R +INTERCEPTOR(char *, ether_ntoa_r, __sanitizer_ether_addr *addr, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ether_ntoa_r, addr, buf); + if (addr) COMMON_INTERCEPTOR_READ_RANGE(ctx, addr, sizeof(*addr)); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(ether_ntoa_r)(addr, buf); + if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} +INTERCEPTOR(__sanitizer_ether_addr *, ether_aton_r, char *buf, + __sanitizer_ether_addr *addr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ether_aton_r, buf, addr); + if (buf) COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, internal_strlen(buf) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + __sanitizer_ether_addr *res = REAL(ether_aton_r)(buf, addr); + if (res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(*res)); + return res; +} +#define INIT_ETHER_R \ + COMMON_INTERCEPT_FUNCTION(ether_ntoa_r); \ + COMMON_INTERCEPT_FUNCTION(ether_aton_r); +#else +#define INIT_ETHER_R +#endif + +#if SANITIZER_INTERCEPT_SHMCTL +INTERCEPTOR(int, shmctl, int shmid, int cmd, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, shmctl, shmid, cmd, buf); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(shmctl)(shmid, cmd, buf); + if (res >= 0) { + unsigned sz = 0; + if (cmd == shmctl_ipc_stat || cmd == shmctl_shm_stat) + sz = sizeof(__sanitizer_shmid_ds); + else if (cmd == shmctl_ipc_info) + sz = struct_shminfo_sz; + else if (cmd == shmctl_shm_info) + sz = struct_shm_info_sz; + if (sz) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sz); + } + return res; +} +#define INIT_SHMCTL COMMON_INTERCEPT_FUNCTION(shmctl); +#else +#define INIT_SHMCTL +#endif + +#if SANITIZER_INTERCEPT_RANDOM_R +INTERCEPTOR(int, random_r, void *buf, u32 *result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, random_r, buf, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(random_r)(buf, result); + if (!res && result) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + return res; +} +#define INIT_RANDOM_R COMMON_INTERCEPT_FUNCTION(random_r); +#else +#define INIT_RANDOM_R +#endif + +// FIXME: under ASan the REAL() call below may write to freed memory and corrupt +// its metadata. See +// https://github.com/google/sanitizers/issues/321. +#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET || \ + SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED || \ + SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSSCHED || \ + SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GET || \ + SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GET || \ + SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GET || \ + SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GET +#define INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(fn, sz) \ + INTERCEPTOR(int, fn, void *attr, void *r) { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, fn, attr, r); \ + int res = REAL(fn)(attr, r); \ + if (!res && r) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, r, sz); \ + return res; \ + } +#define INTERCEPTOR_PTHREAD_ATTR_GET(what, sz) \ + INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_attr_get##what, sz) +#define INTERCEPTOR_PTHREAD_MUTEXATTR_GET(what, sz) \ + INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_mutexattr_get##what, sz) +#define INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(what, sz) \ + INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_rwlockattr_get##what, sz) +#define INTERCEPTOR_PTHREAD_CONDATTR_GET(what, sz) \ + INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_condattr_get##what, sz) +#define INTERCEPTOR_PTHREAD_BARRIERATTR_GET(what, sz) \ + INTERCEPTOR_PTHREAD_OBJECT_ATTR_GET(pthread_barrierattr_get##what, sz) +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET +INTERCEPTOR_PTHREAD_ATTR_GET(detachstate, sizeof(int)) +INTERCEPTOR_PTHREAD_ATTR_GET(guardsize, sizeof(SIZE_T)) +INTERCEPTOR_PTHREAD_ATTR_GET(scope, sizeof(int)) +INTERCEPTOR_PTHREAD_ATTR_GET(stacksize, sizeof(SIZE_T)) +INTERCEPTOR(int, pthread_attr_getstack, void *attr, void **addr, SIZE_T *size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getstack, attr, addr, size); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(pthread_attr_getstack)(attr, addr, size); + if (!res) { + if (addr) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, addr, sizeof(*addr)); + if (size) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, size, sizeof(*size)); + } + return res; +} + +// We may need to call the real pthread_attr_getstack from the run-time +// in sanitizer_common, but we don't want to include the interception headers +// there. So, just define this function here. +namespace __sanitizer { +extern "C" { +int real_pthread_attr_getstack(void *attr, void **addr, SIZE_T *size) { + return REAL(pthread_attr_getstack)(attr, addr, size); +} +} // extern "C" +} // namespace __sanitizer + +#define INIT_PTHREAD_ATTR_GET \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getdetachstate); \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getguardsize); \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getscope); \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getstacksize); \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getstack); +#else +#define INIT_PTHREAD_ATTR_GET +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GET_SCHED +INTERCEPTOR_PTHREAD_ATTR_GET(schedparam, struct_sched_param_sz) +INTERCEPTOR_PTHREAD_ATTR_GET(schedpolicy, sizeof(int)) + +#define INIT_PTHREAD_ATTR_GET_SCHED \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedparam); \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getschedpolicy); +#else +#define INIT_PTHREAD_ATTR_GET_SCHED +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETINHERITSCHED +INTERCEPTOR_PTHREAD_ATTR_GET(inheritsched, sizeof(int)) + +#define INIT_PTHREAD_ATTR_GETINHERITSCHED \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getinheritsched); +#else +#define INIT_PTHREAD_ATTR_GETINHERITSCHED +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_ATTR_GETAFFINITY_NP +INTERCEPTOR(int, pthread_attr_getaffinity_np, void *attr, SIZE_T cpusetsize, + void *cpuset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_attr_getaffinity_np, attr, cpusetsize, + cpuset); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(pthread_attr_getaffinity_np)(attr, cpusetsize, cpuset); + if (!res && cpusetsize && cpuset) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize); + return res; +} + +#define INIT_PTHREAD_ATTR_GETAFFINITY_NP \ + COMMON_INTERCEPT_FUNCTION(pthread_attr_getaffinity_np); +#else +#define INIT_PTHREAD_ATTR_GETAFFINITY_NP +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_GETAFFINITY_NP +INTERCEPTOR(int, pthread_getaffinity_np, void *attr, SIZE_T cpusetsize, + void *cpuset) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_getaffinity_np, attr, cpusetsize, + cpuset); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(pthread_getaffinity_np)(attr, cpusetsize, cpuset); + if (!res && cpusetsize && cpuset) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cpuset, cpusetsize); + return res; +} + +#define INIT_PTHREAD_GETAFFINITY_NP \ + COMMON_INTERCEPT_FUNCTION(pthread_getaffinity_np); +#else +#define INIT_PTHREAD_GETAFFINITY_NP +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPSHARED +INTERCEPTOR_PTHREAD_MUTEXATTR_GET(pshared, sizeof(int)) +#define INIT_PTHREAD_MUTEXATTR_GETPSHARED \ + COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getpshared); +#else +#define INIT_PTHREAD_MUTEXATTR_GETPSHARED +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETTYPE +INTERCEPTOR_PTHREAD_MUTEXATTR_GET(type, sizeof(int)) +#define INIT_PTHREAD_MUTEXATTR_GETTYPE \ + COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_gettype); +#else +#define INIT_PTHREAD_MUTEXATTR_GETTYPE +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPROTOCOL +INTERCEPTOR_PTHREAD_MUTEXATTR_GET(protocol, sizeof(int)) +#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL \ + COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprotocol); +#else +#define INIT_PTHREAD_MUTEXATTR_GETPROTOCOL +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETPRIOCEILING +INTERCEPTOR_PTHREAD_MUTEXATTR_GET(prioceiling, sizeof(int)) +#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING \ + COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getprioceiling); +#else +#define INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST +INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust, sizeof(int)) +#define INIT_PTHREAD_MUTEXATTR_GETROBUST \ + COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust); +#else +#define INIT_PTHREAD_MUTEXATTR_GETROBUST +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_MUTEXATTR_GETROBUST_NP +INTERCEPTOR_PTHREAD_MUTEXATTR_GET(robust_np, sizeof(int)) +#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP \ + COMMON_INTERCEPT_FUNCTION(pthread_mutexattr_getrobust_np); +#else +#define INIT_PTHREAD_MUTEXATTR_GETROBUST_NP +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETPSHARED +INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(pshared, sizeof(int)) +#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED \ + COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getpshared); +#else +#define INIT_PTHREAD_RWLOCKATTR_GETPSHARED +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_RWLOCKATTR_GETKIND_NP +INTERCEPTOR_PTHREAD_RWLOCKATTR_GET(kind_np, sizeof(int)) +#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP \ + COMMON_INTERCEPT_FUNCTION(pthread_rwlockattr_getkind_np); +#else +#define INIT_PTHREAD_RWLOCKATTR_GETKIND_NP +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETPSHARED +INTERCEPTOR_PTHREAD_CONDATTR_GET(pshared, sizeof(int)) +#define INIT_PTHREAD_CONDATTR_GETPSHARED \ + COMMON_INTERCEPT_FUNCTION(pthread_condattr_getpshared); +#else +#define INIT_PTHREAD_CONDATTR_GETPSHARED +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_CONDATTR_GETCLOCK +INTERCEPTOR_PTHREAD_CONDATTR_GET(clock, sizeof(int)) +#define INIT_PTHREAD_CONDATTR_GETCLOCK \ + COMMON_INTERCEPT_FUNCTION(pthread_condattr_getclock); +#else +#define INIT_PTHREAD_CONDATTR_GETCLOCK +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_BARRIERATTR_GETPSHARED +INTERCEPTOR_PTHREAD_BARRIERATTR_GET(pshared, sizeof(int)) // !mac !android +#define INIT_PTHREAD_BARRIERATTR_GETPSHARED \ + COMMON_INTERCEPT_FUNCTION(pthread_barrierattr_getpshared); +#else +#define INIT_PTHREAD_BARRIERATTR_GETPSHARED +#endif + +#if SANITIZER_INTERCEPT_TMPNAM +INTERCEPTOR(char *, tmpnam, char *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, tmpnam, s); + char *res = REAL(tmpnam)(s); + if (res) { + if (s) + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1); + else + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + } + return res; +} +#define INIT_TMPNAM COMMON_INTERCEPT_FUNCTION(tmpnam); +#else +#define INIT_TMPNAM +#endif + +#if SANITIZER_INTERCEPT_TMPNAM_R +INTERCEPTOR(char *, tmpnam_r, char *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, tmpnam_r, s); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(tmpnam_r)(s); + if (res && s) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, s, internal_strlen(s) + 1); + return res; +} +#define INIT_TMPNAM_R COMMON_INTERCEPT_FUNCTION(tmpnam_r); +#else +#define INIT_TMPNAM_R +#endif + +#if SANITIZER_INTERCEPT_PTSNAME +INTERCEPTOR(char *, ptsname, int fd) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ptsname, fd); + char *res = REAL(ptsname)(fd); + if (res != nullptr) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + return res; +} +#define INIT_PTSNAME COMMON_INTERCEPT_FUNCTION(ptsname); +#else +#define INIT_PTSNAME +#endif + +#if SANITIZER_INTERCEPT_PTSNAME_R +INTERCEPTOR(int, ptsname_r, int fd, char *name, SIZE_T namesize) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ptsname_r, fd, name, namesize); + int res = REAL(ptsname_r)(fd, name, namesize); + if (res == 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); + return res; +} +#define INIT_PTSNAME_R COMMON_INTERCEPT_FUNCTION(ptsname_r); +#else +#define INIT_PTSNAME_R +#endif + +#if SANITIZER_INTERCEPT_TTYNAME +INTERCEPTOR(char *, ttyname, int fd) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ttyname, fd); + char *res = REAL(ttyname)(fd); + if (res != nullptr) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + return res; +} +#define INIT_TTYNAME COMMON_INTERCEPT_FUNCTION(ttyname); +#else +#define INIT_TTYNAME +#endif + +#if SANITIZER_INTERCEPT_TTYNAME_R +INTERCEPTOR(int, ttyname_r, int fd, char *name, SIZE_T namesize) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ttyname_r, fd, name, namesize); + int res = REAL(ttyname_r)(fd, name, namesize); + if (res == 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); + return res; +} +#define INIT_TTYNAME_R COMMON_INTERCEPT_FUNCTION(ttyname_r); +#else +#define INIT_TTYNAME_R +#endif + +#if SANITIZER_INTERCEPT_TEMPNAM +INTERCEPTOR(char *, tempnam, char *dir, char *pfx) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, tempnam, dir, pfx); + if (dir) COMMON_INTERCEPTOR_READ_RANGE(ctx, dir, internal_strlen(dir) + 1); + if (pfx) COMMON_INTERCEPTOR_READ_RANGE(ctx, pfx, internal_strlen(pfx) + 1); + char *res = REAL(tempnam)(dir, pfx); + if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + return res; +} +#define INIT_TEMPNAM COMMON_INTERCEPT_FUNCTION(tempnam); +#else +#define INIT_TEMPNAM +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && !SANITIZER_NETBSD +INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name); + COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0); + COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, name); + return REAL(pthread_setname_np)(thread, name); +} +#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np); +#elif SANITIZER_INTERCEPT_PTHREAD_SETNAME_NP && SANITIZER_NETBSD +INTERCEPTOR(int, pthread_setname_np, uptr thread, const char *name, void *arg) { + void *ctx; + char newname[32]; // PTHREAD_MAX_NAMELEN_NP=32 + COMMON_INTERCEPTOR_ENTER(ctx, pthread_setname_np, thread, name, arg); + COMMON_INTERCEPTOR_READ_STRING(ctx, name, 0); + internal_snprintf(newname, sizeof(newname), name, arg); + COMMON_INTERCEPTOR_SET_PTHREAD_NAME(ctx, thread, newname); + return REAL(pthread_setname_np)(thread, name, arg); +} +#define INIT_PTHREAD_SETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_setname_np); +#else +#define INIT_PTHREAD_SETNAME_NP +#endif + +#if SANITIZER_INTERCEPT_PTHREAD_GETNAME_NP +INTERCEPTOR(int, pthread_getname_np, uptr thread, char *name, SIZE_T len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_getname_np, thread, name, len); + int res = REAL(pthread_getname_np)(thread, name, len); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strnlen(name, len) + 1); + return res; +} +#define INIT_PTHREAD_GETNAME_NP COMMON_INTERCEPT_FUNCTION(pthread_getname_np); +#else +#define INIT_PTHREAD_GETNAME_NP +#endif + +#if SANITIZER_INTERCEPT_SINCOS +INTERCEPTOR(void, sincos, double x, double *sin, double *cos) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sincos, x, sin, cos); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + REAL(sincos)(x, sin, cos); + if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); + if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); +} +INTERCEPTOR(void, sincosf, float x, float *sin, float *cos) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sincosf, x, sin, cos); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + REAL(sincosf)(x, sin, cos); + if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); + if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); +} +INTERCEPTOR(void, sincosl, long double x, long double *sin, long double *cos) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sincosl, x, sin, cos); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + REAL(sincosl)(x, sin, cos); + if (sin) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sin, sizeof(*sin)); + if (cos) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cos, sizeof(*cos)); +} +#define INIT_SINCOS \ + COMMON_INTERCEPT_FUNCTION(sincos); \ + COMMON_INTERCEPT_FUNCTION(sincosf); \ + COMMON_INTERCEPT_FUNCTION_LDBL(sincosl); +#else +#define INIT_SINCOS +#endif + +#if SANITIZER_INTERCEPT_REMQUO +INTERCEPTOR(double, remquo, double x, double y, int *quo) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, remquo, x, y, quo); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + double res = REAL(remquo)(x, y, quo); + if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); + return res; +} +INTERCEPTOR(float, remquof, float x, float y, int *quo) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, remquof, x, y, quo); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + float res = REAL(remquof)(x, y, quo); + if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); + return res; +} +#define INIT_REMQUO \ + COMMON_INTERCEPT_FUNCTION(remquo); \ + COMMON_INTERCEPT_FUNCTION(remquof); +#else +#define INIT_REMQUO +#endif + +#if SANITIZER_INTERCEPT_REMQUOL +INTERCEPTOR(long double, remquol, long double x, long double y, int *quo) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, remquol, x, y, quo); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + long double res = REAL(remquol)(x, y, quo); + if (quo) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, quo, sizeof(*quo)); + return res; +} +#define INIT_REMQUOL \ + COMMON_INTERCEPT_FUNCTION_LDBL(remquol); +#else +#define INIT_REMQUOL +#endif + +#if SANITIZER_INTERCEPT_LGAMMA +extern int signgam; +INTERCEPTOR(double, lgamma, double x) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lgamma, x); + double res = REAL(lgamma)(x); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); + return res; +} +INTERCEPTOR(float, lgammaf, float x) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lgammaf, x); + float res = REAL(lgammaf)(x); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); + return res; +} +#define INIT_LGAMMA \ + COMMON_INTERCEPT_FUNCTION(lgamma); \ + COMMON_INTERCEPT_FUNCTION(lgammaf); +#else +#define INIT_LGAMMA +#endif + +#if SANITIZER_INTERCEPT_LGAMMAL +INTERCEPTOR(long double, lgammal, long double x) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lgammal, x); + long double res = REAL(lgammal)(x); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, &signgam, sizeof(signgam)); + return res; +} +#define INIT_LGAMMAL \ + COMMON_INTERCEPT_FUNCTION_LDBL(lgammal); +#else +#define INIT_LGAMMAL +#endif + +#if SANITIZER_INTERCEPT_LGAMMA_R +INTERCEPTOR(double, lgamma_r, double x, int *signp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lgamma_r, x, signp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + double res = REAL(lgamma_r)(x, signp); + if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); + return res; +} +INTERCEPTOR(float, lgammaf_r, float x, int *signp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lgammaf_r, x, signp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + float res = REAL(lgammaf_r)(x, signp); + if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); + return res; +} +#define INIT_LGAMMA_R \ + COMMON_INTERCEPT_FUNCTION(lgamma_r); \ + COMMON_INTERCEPT_FUNCTION(lgammaf_r); +#else +#define INIT_LGAMMA_R +#endif + +#if SANITIZER_INTERCEPT_LGAMMAL_R +INTERCEPTOR(long double, lgammal_r, long double x, int *signp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lgammal_r, x, signp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + long double res = REAL(lgammal_r)(x, signp); + if (signp) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, signp, sizeof(*signp)); + return res; +} +#define INIT_LGAMMAL_R COMMON_INTERCEPT_FUNCTION_LDBL(lgammal_r); +#else +#define INIT_LGAMMAL_R +#endif + +#if SANITIZER_INTERCEPT_DRAND48_R +INTERCEPTOR(int, drand48_r, void *buffer, double *result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, drand48_r, buffer, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(drand48_r)(buffer, result); + if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + return res; +} +INTERCEPTOR(int, lrand48_r, void *buffer, long *result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lrand48_r, buffer, result); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(lrand48_r)(buffer, result); + if (result) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(*result)); + return res; +} +#define INIT_DRAND48_R \ + COMMON_INTERCEPT_FUNCTION(drand48_r); \ + COMMON_INTERCEPT_FUNCTION(lrand48_r); +#else +#define INIT_DRAND48_R +#endif + +#if SANITIZER_INTERCEPT_RAND_R +INTERCEPTOR(int, rand_r, unsigned *seedp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, rand_r, seedp); + COMMON_INTERCEPTOR_READ_RANGE(ctx, seedp, sizeof(*seedp)); + return REAL(rand_r)(seedp); +} +#define INIT_RAND_R COMMON_INTERCEPT_FUNCTION(rand_r); +#else +#define INIT_RAND_R +#endif + +#if SANITIZER_INTERCEPT_GETLINE +INTERCEPTOR(SSIZE_T, getline, char **lineptr, SIZE_T *n, void *stream) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getline, lineptr, n, stream); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = REAL(getline)(lineptr, n, stream); + if (res > 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); + } + return res; +} + +// FIXME: under ASan the call below may write to freed memory and corrupt its +// metadata. See +// https://github.com/google/sanitizers/issues/321. +#define GETDELIM_INTERCEPTOR_IMPL(vname) \ + { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, vname, lineptr, n, delim, stream); \ + SSIZE_T res = REAL(vname)(lineptr, n, delim, stream); \ + if (res > 0) { \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineptr, sizeof(*lineptr)); \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *lineptr, res + 1); \ + } \ + return res; \ + } + +INTERCEPTOR(SSIZE_T, __getdelim, char **lineptr, SIZE_T *n, int delim, + void *stream) +GETDELIM_INTERCEPTOR_IMPL(__getdelim) + +// There's no __getdelim() on FreeBSD so we supply the getdelim() interceptor +// with its own body. +INTERCEPTOR(SSIZE_T, getdelim, char **lineptr, SIZE_T *n, int delim, + void *stream) +GETDELIM_INTERCEPTOR_IMPL(getdelim) + +#define INIT_GETLINE \ + COMMON_INTERCEPT_FUNCTION(getline); \ + COMMON_INTERCEPT_FUNCTION(__getdelim); \ + COMMON_INTERCEPT_FUNCTION(getdelim); +#else +#define INIT_GETLINE +#endif + +#if SANITIZER_INTERCEPT_ICONV +INTERCEPTOR(SIZE_T, iconv, void *cd, char **inbuf, SIZE_T *inbytesleft, + char **outbuf, SIZE_T *outbytesleft) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, iconv, cd, inbuf, inbytesleft, outbuf, + outbytesleft); + if (inbytesleft) + COMMON_INTERCEPTOR_READ_RANGE(ctx, inbytesleft, sizeof(*inbytesleft)); + if (inbuf && inbytesleft) + COMMON_INTERCEPTOR_READ_RANGE(ctx, *inbuf, *inbytesleft); + if (outbytesleft) + COMMON_INTERCEPTOR_READ_RANGE(ctx, outbytesleft, sizeof(*outbytesleft)); + void *outbuf_orig = outbuf ? *outbuf : nullptr; + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SIZE_T res = REAL(iconv)(cd, inbuf, inbytesleft, outbuf, outbytesleft); + if (outbuf && *outbuf > outbuf_orig) { + SIZE_T sz = (char *)*outbuf - (char *)outbuf_orig; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, outbuf_orig, sz); + } + return res; +} +#define INIT_ICONV COMMON_INTERCEPT_FUNCTION(iconv); +#else +#define INIT_ICONV +#endif + +#if SANITIZER_INTERCEPT_TIMES +INTERCEPTOR(__sanitizer_clock_t, times, void *tms) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, times, tms); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + __sanitizer_clock_t res = REAL(times)(tms); + if (res != (__sanitizer_clock_t)-1 && tms) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tms, struct_tms_sz); + return res; +} +#define INIT_TIMES COMMON_INTERCEPT_FUNCTION(times); +#else +#define INIT_TIMES +#endif + +#if SANITIZER_S390 && \ + (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET) +extern "C" uptr __tls_get_offset_wrapper(void *arg, uptr (*fn)(void *arg)); +DEFINE_REAL(uptr, __tls_get_offset, void *arg) +#endif + +#if SANITIZER_INTERCEPT_TLS_GET_ADDR +#if !SANITIZER_S390 +#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_addr) +// If you see any crashes around this functions, there are 2 known issues with +// it: 1. __tls_get_addr can be called with mis-aligned stack due to: +// https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 +// 2. It can be called recursively if sanitizer code uses __tls_get_addr +// to access thread local variables (it should not happen normally, +// because sanitizers use initial-exec tls model). +INTERCEPTOR(void *, __tls_get_addr, void *arg) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr, arg); + void *res = REAL(__tls_get_addr)(arg); + uptr tls_begin, tls_end; + COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end); + DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, res, tls_begin, tls_end); + if (dtv) { + // New DTLS block has been allocated. + COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size); + } + return res; +} +#if SANITIZER_PPC +// On PowerPC, we also need to intercept __tls_get_addr_opt, which has +// mostly the same semantics as __tls_get_addr, but its presence enables +// some optimizations in linker (which are safe to ignore here). +INTERCEPTOR(void *, __tls_get_addr_opt, void *arg) ALIAS(WRAP(__tls_get_addr)); +#endif +#else // SANITIZER_S390 +// On s390, we have to intercept two functions here: +// - __tls_get_addr_internal, which is a glibc-internal function that is like +// the usual __tls_get_addr, but returns a TP-relative offset instead of +// a proper pointer. It is used by dlsym for TLS symbols. +// - __tls_get_offset, which is like the above, but also takes a GOT-relative +// descriptor offset as an argument instead of a pointer. GOT address +// is passed in r12, so it's necessary to write it in assembly. This is +// the function used by the compiler. +#define INIT_TLS_GET_ADDR COMMON_INTERCEPT_FUNCTION(__tls_get_offset) +INTERCEPTOR(uptr, __tls_get_addr_internal, void *arg) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __tls_get_addr_internal, arg); + uptr res = __tls_get_offset_wrapper(arg, REAL(__tls_get_offset)); + uptr tp = reinterpret_cast<uptr>(__builtin_thread_pointer()); + void *ptr = reinterpret_cast<void *>(res + tp); + uptr tls_begin, tls_end; + COMMON_INTERCEPTOR_GET_TLS_RANGE(&tls_begin, &tls_end); + DTLS::DTV *dtv = DTLS_on_tls_get_addr(arg, ptr, tls_begin, tls_end); + if (dtv) { + // New DTLS block has been allocated. + COMMON_INTERCEPTOR_INITIALIZE_RANGE((void *)dtv->beg, dtv->size); + } + return res; +} +#endif // SANITIZER_S390 +#else +#define INIT_TLS_GET_ADDR +#endif + +#if SANITIZER_S390 && \ + (SANITIZER_INTERCEPT_TLS_GET_ADDR || SANITIZER_INTERCEPT_TLS_GET_OFFSET) +// We need a hidden symbol aliasing the above, so that we can jump +// directly to it from the assembly below. +extern "C" __attribute__((visibility("hidden"))) uptr __tls_get_addr_hidden( + void *arg) ALIAS(WRAP(__tls_get_addr_internal)); +extern "C" uptr __tls_get_offset(void *arg); +extern "C" uptr TRAMPOLINE(__tls_get_offset)(void *arg); +extern "C" uptr WRAP(__tls_get_offset)(void *arg); +// Now carefully intercept __tls_get_offset. +asm( + ".text\n" +// The __intercept_ version has to exist, so that gen_dynamic_list.py +// exports our symbol. + ".weak __tls_get_offset\n" + ".set __tls_get_offset, __interceptor___tls_get_offset\n" + ".global __interceptor___tls_get_offset\n" + ".type __interceptor___tls_get_offset, @function\n" + "__interceptor___tls_get_offset:\n" +#ifdef __s390x__ + "la %r2, 0(%r2,%r12)\n" + "jg __tls_get_addr_hidden\n" +#else + "basr %r3,0\n" + "0: la %r2,0(%r2,%r12)\n" + "l %r4,1f-0b(%r3)\n" + "b 0(%r4,%r3)\n" + "1: .long __tls_get_addr_hidden - 0b\n" +#endif + ".size __interceptor___tls_get_offset, .-__interceptor___tls_get_offset\n" +// Assembly wrapper to call REAL(__tls_get_offset)(arg) + ".type __tls_get_offset_wrapper, @function\n" + "__tls_get_offset_wrapper:\n" +#ifdef __s390x__ + "sgr %r2,%r12\n" +#else + "sr %r2,%r12\n" +#endif + "br %r3\n" + ".size __tls_get_offset_wrapper, .-__tls_get_offset_wrapper\n" +); +#endif + +#if SANITIZER_INTERCEPT_LISTXATTR +INTERCEPTOR(SSIZE_T, listxattr, const char *path, char *list, SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, listxattr, path, list, size); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = REAL(listxattr)(path, list, size); + // Here and below, size == 0 is a special case where nothing is written to the + // buffer, and res contains the desired buffer size. + if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); + return res; +} +INTERCEPTOR(SSIZE_T, llistxattr, const char *path, char *list, SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, llistxattr, path, list, size); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = REAL(llistxattr)(path, list, size); + if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); + return res; +} +INTERCEPTOR(SSIZE_T, flistxattr, int fd, char *list, SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, flistxattr, fd, list, size); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = REAL(flistxattr)(fd, list, size); + if (size && res > 0 && list) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, list, res); + return res; +} +#define INIT_LISTXATTR \ + COMMON_INTERCEPT_FUNCTION(listxattr); \ + COMMON_INTERCEPT_FUNCTION(llistxattr); \ + COMMON_INTERCEPT_FUNCTION(flistxattr); +#else +#define INIT_LISTXATTR +#endif + +#if SANITIZER_INTERCEPT_GETXATTR +INTERCEPTOR(SSIZE_T, getxattr, const char *path, const char *name, char *value, + SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getxattr, path, name, value, size); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = REAL(getxattr)(path, name, value, size); + if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); + return res; +} +INTERCEPTOR(SSIZE_T, lgetxattr, const char *path, const char *name, char *value, + SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lgetxattr, path, name, value, size); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = REAL(lgetxattr)(path, name, value, size); + if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); + return res; +} +INTERCEPTOR(SSIZE_T, fgetxattr, int fd, const char *name, char *value, + SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgetxattr, fd, name, value, size); + if (name) COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + SSIZE_T res = REAL(fgetxattr)(fd, name, value, size); + if (size && res > 0 && value) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, res); + return res; +} +#define INIT_GETXATTR \ + COMMON_INTERCEPT_FUNCTION(getxattr); \ + COMMON_INTERCEPT_FUNCTION(lgetxattr); \ + COMMON_INTERCEPT_FUNCTION(fgetxattr); +#else +#define INIT_GETXATTR +#endif + +#if SANITIZER_INTERCEPT_GETRESID +INTERCEPTOR(int, getresuid, void *ruid, void *euid, void *suid) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getresuid, ruid, euid, suid); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getresuid)(ruid, euid, suid); + if (res >= 0) { + if (ruid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ruid, uid_t_sz); + if (euid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, euid, uid_t_sz); + if (suid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, suid, uid_t_sz); + } + return res; +} +INTERCEPTOR(int, getresgid, void *rgid, void *egid, void *sgid) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getresgid, rgid, egid, sgid); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getresgid)(rgid, egid, sgid); + if (res >= 0) { + if (rgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rgid, gid_t_sz); + if (egid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, egid, gid_t_sz); + if (sgid) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sgid, gid_t_sz); + } + return res; +} +#define INIT_GETRESID \ + COMMON_INTERCEPT_FUNCTION(getresuid); \ + COMMON_INTERCEPT_FUNCTION(getresgid); +#else +#define INIT_GETRESID +#endif + +#if SANITIZER_INTERCEPT_GETIFADDRS +// As long as getifaddrs()/freeifaddrs() use calloc()/free(), we don't need to +// intercept freeifaddrs(). If that ceases to be the case, we might need to +// intercept it to poison the memory again. +INTERCEPTOR(int, getifaddrs, __sanitizer_ifaddrs **ifap) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getifaddrs, ifap); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(getifaddrs)(ifap); + if (res == 0 && ifap) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifap, sizeof(void *)); + __sanitizer_ifaddrs *p = *ifap; + while (p) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(__sanitizer_ifaddrs)); + if (p->ifa_name) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_name, + internal_strlen(p->ifa_name) + 1); + if (p->ifa_addr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_addr, struct_sockaddr_sz); + if (p->ifa_netmask) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_netmask, struct_sockaddr_sz); + // On Linux this is a union, but the other member also points to a + // struct sockaddr, so the following is sufficient. + if (p->ifa_dstaddr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->ifa_dstaddr, struct_sockaddr_sz); + // FIXME(smatveev): Unpoison p->ifa_data as well. + p = p->ifa_next; + } + } + return res; +} +#define INIT_GETIFADDRS \ + COMMON_INTERCEPT_FUNCTION(getifaddrs); +#else +#define INIT_GETIFADDRS +#endif + +#if SANITIZER_INTERCEPT_IF_INDEXTONAME +INTERCEPTOR(char *, if_indextoname, unsigned int ifindex, char* ifname) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, if_indextoname, ifindex, ifname); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + char *res = REAL(if_indextoname)(ifindex, ifname); + if (res && ifname) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ifname, internal_strlen(ifname) + 1); + return res; +} +INTERCEPTOR(unsigned int, if_nametoindex, const char* ifname) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, if_nametoindex, ifname); + if (ifname) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ifname, internal_strlen(ifname) + 1); + return REAL(if_nametoindex)(ifname); +} +#define INIT_IF_INDEXTONAME \ + COMMON_INTERCEPT_FUNCTION(if_indextoname); \ + COMMON_INTERCEPT_FUNCTION(if_nametoindex); +#else +#define INIT_IF_INDEXTONAME +#endif + +#if SANITIZER_INTERCEPT_CAPGET +INTERCEPTOR(int, capget, void *hdrp, void *datap) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, capget, hdrp, datap); + if (hdrp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(capget)(hdrp, datap); + if (res == 0 && datap) { + unsigned datasz = __user_cap_data_struct_sz(hdrp); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datap, datasz); + } + // We can also return -1 and write to hdrp->version if the version passed in + // hdrp->version is unsupported. But that's not a trivial condition to check, + // and anyway COMMON_INTERCEPTOR_READ_RANGE protects us to some extent. + return res; +} +INTERCEPTOR(int, capset, void *hdrp, const void *datap) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, capset, hdrp, datap); + if (hdrp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, hdrp, __user_cap_header_struct_sz); + if (datap) { + unsigned datasz = __user_cap_data_struct_sz(hdrp); + COMMON_INTERCEPTOR_READ_RANGE(ctx, datap, datasz); + } + return REAL(capset)(hdrp, datap); +} +#define INIT_CAPGET \ + COMMON_INTERCEPT_FUNCTION(capget); \ + COMMON_INTERCEPT_FUNCTION(capset); +#else +#define INIT_CAPGET +#endif + +#if SANITIZER_INTERCEPT_FTIME +INTERCEPTOR(int, ftime, __sanitizer_timeb *tp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ftime, tp); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(ftime)(tp); + if (tp) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, tp, sizeof(*tp)); + return res; +} +#define INIT_FTIME COMMON_INTERCEPT_FUNCTION(ftime); +#else +#define INIT_FTIME +#endif // SANITIZER_INTERCEPT_FTIME + +#if SANITIZER_INTERCEPT_XDR +INTERCEPTOR(void, xdrmem_create, __sanitizer_XDR *xdrs, uptr addr, + unsigned size, int op) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, xdrmem_create, xdrs, addr, size, op); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + REAL(xdrmem_create)(xdrs, addr, size, op); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs)); + if (op == __sanitizer_XDR_ENCODE) { + // It's not obvious how much data individual xdr_ routines write. + // Simply unpoison the entire target buffer in advance. + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, (void *)addr, size); + } +} + +INTERCEPTOR(void, xdrstdio_create, __sanitizer_XDR *xdrs, void *file, int op) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, xdrstdio_create, xdrs, file, op); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + REAL(xdrstdio_create)(xdrs, file, op); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdrs, sizeof(*xdrs)); +} + +// FIXME: under ASan the call below may write to freed memory and corrupt +// its metadata. See +// https://github.com/google/sanitizers/issues/321. +#define XDR_INTERCEPTOR(F, T) \ + INTERCEPTOR(int, F, __sanitizer_XDR *xdrs, T *p) { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, F, xdrs, p); \ + if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) \ + COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); \ + int res = REAL(F)(xdrs, p); \ + if (res && p && xdrs->x_op == __sanitizer_XDR_DECODE) \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); \ + return res; \ + } + +XDR_INTERCEPTOR(xdr_short, short) +XDR_INTERCEPTOR(xdr_u_short, unsigned short) +XDR_INTERCEPTOR(xdr_int, int) +XDR_INTERCEPTOR(xdr_u_int, unsigned) +XDR_INTERCEPTOR(xdr_long, long) +XDR_INTERCEPTOR(xdr_u_long, unsigned long) +XDR_INTERCEPTOR(xdr_hyper, long long) +XDR_INTERCEPTOR(xdr_u_hyper, unsigned long long) +XDR_INTERCEPTOR(xdr_longlong_t, long long) +XDR_INTERCEPTOR(xdr_u_longlong_t, unsigned long long) +XDR_INTERCEPTOR(xdr_int8_t, u8) +XDR_INTERCEPTOR(xdr_uint8_t, u8) +XDR_INTERCEPTOR(xdr_int16_t, u16) +XDR_INTERCEPTOR(xdr_uint16_t, u16) +XDR_INTERCEPTOR(xdr_int32_t, u32) +XDR_INTERCEPTOR(xdr_uint32_t, u32) +XDR_INTERCEPTOR(xdr_int64_t, u64) +XDR_INTERCEPTOR(xdr_uint64_t, u64) +XDR_INTERCEPTOR(xdr_quad_t, long long) +XDR_INTERCEPTOR(xdr_u_quad_t, unsigned long long) +XDR_INTERCEPTOR(xdr_bool, bool) +XDR_INTERCEPTOR(xdr_enum, int) +XDR_INTERCEPTOR(xdr_char, char) +XDR_INTERCEPTOR(xdr_u_char, unsigned char) +XDR_INTERCEPTOR(xdr_float, float) +XDR_INTERCEPTOR(xdr_double, double) + +// FIXME: intercept xdr_array, opaque, union, vector, reference, pointer, +// wrapstring, sizeof + +INTERCEPTOR(int, xdr_bytes, __sanitizer_XDR *xdrs, char **p, unsigned *sizep, + unsigned maxsize) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, xdr_bytes, xdrs, p, sizep, maxsize); + if (p && sizep && xdrs->x_op == __sanitizer_XDR_ENCODE) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, sizep, sizeof(*sizep)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, *sizep); + } + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(xdr_bytes)(xdrs, p, sizep, maxsize); + if (p && sizep && xdrs->x_op == __sanitizer_XDR_DECODE) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizep, sizeof(*sizep)); + if (res && *p && *sizep) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, *sizep); + } + return res; +} + +INTERCEPTOR(int, xdr_string, __sanitizer_XDR *xdrs, char **p, + unsigned maxsize) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, xdr_string, xdrs, p, maxsize); + if (p && xdrs->x_op == __sanitizer_XDR_ENCODE) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, p, sizeof(*p)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, *p, internal_strlen(*p) + 1); + } + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + int res = REAL(xdr_string)(xdrs, p, maxsize); + if (p && xdrs->x_op == __sanitizer_XDR_DECODE) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); + if (res && *p) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *p, internal_strlen(*p) + 1); + } + return res; +} + +#define INIT_XDR \ + COMMON_INTERCEPT_FUNCTION(xdrmem_create); \ + COMMON_INTERCEPT_FUNCTION(xdrstdio_create); \ + COMMON_INTERCEPT_FUNCTION(xdr_short); \ + COMMON_INTERCEPT_FUNCTION(xdr_u_short); \ + COMMON_INTERCEPT_FUNCTION(xdr_int); \ + COMMON_INTERCEPT_FUNCTION(xdr_u_int); \ + COMMON_INTERCEPT_FUNCTION(xdr_long); \ + COMMON_INTERCEPT_FUNCTION(xdr_u_long); \ + COMMON_INTERCEPT_FUNCTION(xdr_hyper); \ + COMMON_INTERCEPT_FUNCTION(xdr_u_hyper); \ + COMMON_INTERCEPT_FUNCTION(xdr_longlong_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_u_longlong_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_int8_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_uint8_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_int16_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_uint16_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_int32_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_uint32_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_int64_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_uint64_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_quad_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_u_quad_t); \ + COMMON_INTERCEPT_FUNCTION(xdr_bool); \ + COMMON_INTERCEPT_FUNCTION(xdr_enum); \ + COMMON_INTERCEPT_FUNCTION(xdr_char); \ + COMMON_INTERCEPT_FUNCTION(xdr_u_char); \ + COMMON_INTERCEPT_FUNCTION(xdr_float); \ + COMMON_INTERCEPT_FUNCTION(xdr_double); \ + COMMON_INTERCEPT_FUNCTION(xdr_bytes); \ + COMMON_INTERCEPT_FUNCTION(xdr_string); +#else +#define INIT_XDR +#endif // SANITIZER_INTERCEPT_XDR + +#if SANITIZER_INTERCEPT_XDRREC +typedef int (*xdrrec_cb)(char*, char*, int); +struct XdrRecWrapper { + char *handle; + xdrrec_cb rd, wr; +}; +typedef AddrHashMap<XdrRecWrapper *, 11> XdrRecWrapMap; +static XdrRecWrapMap *xdrrec_wrap_map; + +static int xdrrec_wr_wrap(char *handle, char *buf, int count) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(buf, count); + XdrRecWrapper *wrap = (XdrRecWrapper *)handle; + return wrap->wr(wrap->handle, buf, count); +} + +static int xdrrec_rd_wrap(char *handle, char *buf, int count) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + XdrRecWrapper *wrap = (XdrRecWrapper *)handle; + return wrap->rd(wrap->handle, buf, count); +} + +// This doesn't apply to the solaris version as it has a different function +// signature. +INTERCEPTOR(void, xdrrec_create, __sanitizer_XDR *xdr, unsigned sndsize, + unsigned rcvsize, char *handle, int (*rd)(char*, char*, int), + int (*wr)(char*, char*, int)) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, xdrrec_create, xdr, sndsize, rcvsize, + handle, rd, wr); + COMMON_INTERCEPTOR_READ_RANGE(ctx, &xdr->x_op, sizeof xdr->x_op); + + // We can't allocate a wrapper on the stack, as the handle is used outside + // this stack frame. So we put it on the heap, and keep track of it with + // the HashMap (keyed by x_private). When we later need to xdr_destroy, + // we can index the map, free the wrapper, and then clean the map entry. + XdrRecWrapper *wrap_data = + (XdrRecWrapper *)InternalAlloc(sizeof(XdrRecWrapper)); + wrap_data->handle = handle; + wrap_data->rd = rd; + wrap_data->wr = wr; + if (wr) + wr = xdrrec_wr_wrap; + if (rd) + rd = xdrrec_rd_wrap; + handle = (char *)wrap_data; + + REAL(xdrrec_create)(xdr, sndsize, rcvsize, handle, rd, wr); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, xdr, sizeof *xdr); + + XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, false, true); + *wrap = wrap_data; +} + +// We have to intercept this to be able to free wrapper memory; +// otherwise it's not necessary. +INTERCEPTOR(void, xdr_destroy, __sanitizer_XDR *xdr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, xdr_destroy, xdr); + + XdrRecWrapMap::Handle wrap(xdrrec_wrap_map, xdr->x_private, true); + InternalFree(*wrap); + REAL(xdr_destroy)(xdr); +} +#define INIT_XDRREC_LINUX \ + static u64 xdrrec_wrap_mem[sizeof(XdrRecWrapMap) / sizeof(u64) + 1]; \ + xdrrec_wrap_map = new ((void *)&xdrrec_wrap_mem) XdrRecWrapMap(); \ + COMMON_INTERCEPT_FUNCTION(xdrrec_create); \ + COMMON_INTERCEPT_FUNCTION(xdr_destroy); +#else +#define INIT_XDRREC_LINUX +#endif + +#if SANITIZER_INTERCEPT_TSEARCH +INTERCEPTOR(void *, tsearch, void *key, void **rootp, + int (*compar)(const void *, const void *)) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, tsearch, key, rootp, compar); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + void *res = REAL(tsearch)(key, rootp, compar); + if (res && *(void **)res == key) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, sizeof(void *)); + return res; +} +#define INIT_TSEARCH COMMON_INTERCEPT_FUNCTION(tsearch); +#else +#define INIT_TSEARCH +#endif + +#if SANITIZER_INTERCEPT_LIBIO_INTERNALS || SANITIZER_INTERCEPT_FOPEN || \ + SANITIZER_INTERCEPT_OPEN_MEMSTREAM +void unpoison_file(__sanitizer_FILE *fp) { +#if SANITIZER_HAS_STRUCT_FILE + COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp, sizeof(*fp)); +#if SANITIZER_NETBSD + if (fp->_bf._base && fp->_bf._size > 0) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_bf._base, + fp->_bf._size); +#else + if (fp->_IO_read_base && fp->_IO_read_base < fp->_IO_read_end) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_read_base, + fp->_IO_read_end - fp->_IO_read_base); + if (fp->_IO_write_base && fp->_IO_write_base < fp->_IO_write_end) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(fp->_IO_write_base, + fp->_IO_write_end - fp->_IO_write_base); +#endif +#endif // SANITIZER_HAS_STRUCT_FILE +} +#endif + +#if SANITIZER_INTERCEPT_LIBIO_INTERNALS +// These guys are called when a .c source is built with -O2. +INTERCEPTOR(int, __uflow, __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __uflow, fp); + int res = REAL(__uflow)(fp); + unpoison_file(fp); + return res; +} +INTERCEPTOR(int, __underflow, __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __underflow, fp); + int res = REAL(__underflow)(fp); + unpoison_file(fp); + return res; +} +INTERCEPTOR(int, __overflow, __sanitizer_FILE *fp, int ch) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __overflow, fp, ch); + int res = REAL(__overflow)(fp, ch); + unpoison_file(fp); + return res; +} +INTERCEPTOR(int, __wuflow, __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __wuflow, fp); + int res = REAL(__wuflow)(fp); + unpoison_file(fp); + return res; +} +INTERCEPTOR(int, __wunderflow, __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __wunderflow, fp); + int res = REAL(__wunderflow)(fp); + unpoison_file(fp); + return res; +} +INTERCEPTOR(int, __woverflow, __sanitizer_FILE *fp, int ch) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __woverflow, fp, ch); + int res = REAL(__woverflow)(fp, ch); + unpoison_file(fp); + return res; +} +#define INIT_LIBIO_INTERNALS \ + COMMON_INTERCEPT_FUNCTION(__uflow); \ + COMMON_INTERCEPT_FUNCTION(__underflow); \ + COMMON_INTERCEPT_FUNCTION(__overflow); \ + COMMON_INTERCEPT_FUNCTION(__wuflow); \ + COMMON_INTERCEPT_FUNCTION(__wunderflow); \ + COMMON_INTERCEPT_FUNCTION(__woverflow); +#else +#define INIT_LIBIO_INTERNALS +#endif + +#if SANITIZER_INTERCEPT_FOPEN +INTERCEPTOR(__sanitizer_FILE *, fopen, const char *path, const char *mode) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fopen, path, mode); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); + __sanitizer_FILE *res = REAL(fopen)(path, mode); + COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); + if (res) unpoison_file(res); + return res; +} +INTERCEPTOR(__sanitizer_FILE *, fdopen, int fd, const char *mode) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fdopen, fd, mode); + COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); + __sanitizer_FILE *res = REAL(fdopen)(fd, mode); + if (res) unpoison_file(res); + return res; +} +INTERCEPTOR(__sanitizer_FILE *, freopen, const char *path, const char *mode, + __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, freopen, path, mode, fp); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); + COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); + __sanitizer_FILE *res = REAL(freopen)(path, mode, fp); + COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); + if (res) unpoison_file(res); + return res; +} +#define INIT_FOPEN \ + COMMON_INTERCEPT_FUNCTION(fopen); \ + COMMON_INTERCEPT_FUNCTION(fdopen); \ + COMMON_INTERCEPT_FUNCTION(freopen); +#else +#define INIT_FOPEN +#endif + +#if SANITIZER_INTERCEPT_FLOPEN +INTERCEPTOR(int, flopen, const char *path, int flags, ...) { + void *ctx; + va_list ap; + va_start(ap, flags); + u16 mode = static_cast<u16>(va_arg(ap, u32)); + va_end(ap); + COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode); + if (path) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + } + return COMMON_INTERCEPTOR_BLOCK_REAL(flopen)(path, flags, mode); +} + +INTERCEPTOR(int, flopenat, int dirfd, const char *path, int flags, ...) { + void *ctx; + va_list ap; + va_start(ap, flags); + u16 mode = static_cast<u16>(va_arg(ap, u32)); + va_end(ap); + COMMON_INTERCEPTOR_ENTER(ctx, flopen, path, flags, mode); + if (path) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + } + return COMMON_INTERCEPTOR_BLOCK_REAL(flopenat)(dirfd, path, flags, mode); +} + +#define INIT_FLOPEN \ + COMMON_INTERCEPT_FUNCTION(flopen); \ + COMMON_INTERCEPT_FUNCTION(flopenat); +#else +#define INIT_FLOPEN +#endif + +#if SANITIZER_INTERCEPT_FOPEN64 +INTERCEPTOR(__sanitizer_FILE *, fopen64, const char *path, const char *mode) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fopen64, path, mode); + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); + __sanitizer_FILE *res = REAL(fopen64)(path, mode); + COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); + if (res) unpoison_file(res); + return res; +} +INTERCEPTOR(__sanitizer_FILE *, freopen64, const char *path, const char *mode, + __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, freopen64, path, mode, fp); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + COMMON_INTERCEPTOR_READ_RANGE(ctx, mode, internal_strlen(mode) + 1); + COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); + __sanitizer_FILE *res = REAL(freopen64)(path, mode, fp); + COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, path); + if (res) unpoison_file(res); + return res; +} +#define INIT_FOPEN64 \ + COMMON_INTERCEPT_FUNCTION(fopen64); \ + COMMON_INTERCEPT_FUNCTION(freopen64); +#else +#define INIT_FOPEN64 +#endif + +#if SANITIZER_INTERCEPT_OPEN_MEMSTREAM +INTERCEPTOR(__sanitizer_FILE *, open_memstream, char **ptr, SIZE_T *sizeloc) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, open_memstream, ptr, sizeloc); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + __sanitizer_FILE *res = REAL(open_memstream)(ptr, sizeloc); + if (res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc)); + unpoison_file(res); + FileMetadata file = {ptr, sizeloc}; + SetInterceptorMetadata(res, file); + } + return res; +} +INTERCEPTOR(__sanitizer_FILE *, open_wmemstream, wchar_t **ptr, + SIZE_T *sizeloc) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, open_wmemstream, ptr, sizeloc); + __sanitizer_FILE *res = REAL(open_wmemstream)(ptr, sizeloc); + if (res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ptr, sizeof(*ptr)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sizeloc, sizeof(*sizeloc)); + unpoison_file(res); + FileMetadata file = {(char **)ptr, sizeloc}; + SetInterceptorMetadata(res, file); + } + return res; +} +INTERCEPTOR(__sanitizer_FILE *, fmemopen, void *buf, SIZE_T size, + const char *mode) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fmemopen, buf, size, mode); + // FIXME: under ASan the call below may write to freed memory and corrupt + // its metadata. See + // https://github.com/google/sanitizers/issues/321. + __sanitizer_FILE *res = REAL(fmemopen)(buf, size, mode); + if (res) unpoison_file(res); + return res; +} +#define INIT_OPEN_MEMSTREAM \ + COMMON_INTERCEPT_FUNCTION(open_memstream); \ + COMMON_INTERCEPT_FUNCTION(open_wmemstream); \ + COMMON_INTERCEPT_FUNCTION(fmemopen); +#else +#define INIT_OPEN_MEMSTREAM +#endif + +#if SANITIZER_INTERCEPT_OBSTACK +static void initialize_obstack(__sanitizer_obstack *obstack) { + COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack, sizeof(*obstack)); + if (obstack->chunk) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(obstack->chunk, + sizeof(*obstack->chunk)); +} + +INTERCEPTOR(int, _obstack_begin_1, __sanitizer_obstack *obstack, int sz, + int align, void *(*alloc_fn)(uptr arg, uptr sz), + void (*free_fn)(uptr arg, void *p)) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin_1, obstack, sz, align, alloc_fn, + free_fn); + int res = REAL(_obstack_begin_1)(obstack, sz, align, alloc_fn, free_fn); + if (res) initialize_obstack(obstack); + return res; +} +INTERCEPTOR(int, _obstack_begin, __sanitizer_obstack *obstack, int sz, + int align, void *(*alloc_fn)(uptr sz), void (*free_fn)(void *p)) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, _obstack_begin, obstack, sz, align, alloc_fn, + free_fn); + int res = REAL(_obstack_begin)(obstack, sz, align, alloc_fn, free_fn); + if (res) initialize_obstack(obstack); + return res; +} +INTERCEPTOR(void, _obstack_newchunk, __sanitizer_obstack *obstack, int length) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, _obstack_newchunk, obstack, length); + REAL(_obstack_newchunk)(obstack, length); + if (obstack->chunk) + COMMON_INTERCEPTOR_INITIALIZE_RANGE( + obstack->chunk, obstack->next_free - (char *)obstack->chunk); +} +#define INIT_OBSTACK \ + COMMON_INTERCEPT_FUNCTION(_obstack_begin_1); \ + COMMON_INTERCEPT_FUNCTION(_obstack_begin); \ + COMMON_INTERCEPT_FUNCTION(_obstack_newchunk); +#else +#define INIT_OBSTACK +#endif + +#if SANITIZER_INTERCEPT_FFLUSH +INTERCEPTOR(int, fflush, __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fflush, fp); + if (fp) + unpoison_file(fp); + int res = REAL(fflush)(fp); + // FIXME: handle fp == NULL + if (fp) { + const FileMetadata *m = GetInterceptorMetadata(fp); + if (m) COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); + } + return res; +} +#define INIT_FFLUSH COMMON_INTERCEPT_FUNCTION(fflush); +#else +#define INIT_FFLUSH +#endif + +#if SANITIZER_INTERCEPT_FCLOSE +INTERCEPTOR(int, fclose, __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fclose, fp); + COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); + const FileMetadata *m = GetInterceptorMetadata(fp); + if (fp) + unpoison_file(fp); + int res = REAL(fclose)(fp); + if (m) { + COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); + DeleteInterceptorMetadata(fp); + } + return res; +} +#define INIT_FCLOSE COMMON_INTERCEPT_FUNCTION(fclose); +#else +#define INIT_FCLOSE +#endif + +#if SANITIZER_INTERCEPT_DLOPEN_DLCLOSE +INTERCEPTOR(void*, dlopen, const char *filename, int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlopen, filename, flag); + + if (filename) { + COMMON_INTERCEPTOR_READ_STRING(ctx, filename, 0); + +# if !SANITIZER_DYNAMIC + // We care about a very specific use-case: dladdr on + // statically-linked ASan may return <main program> + // instead of the library. + // We therefore only take effect if the sanitizer is statically + // linked, and we don't bother canonicalizing paths because + // dladdr should return the same address both times (we assume + // the user did not canonicalize the result from dladdr). + if (common_flags()->test_only_replace_dlopen_main_program) { + VPrintf(1, "dlopen interceptor: filename: %s\n", filename); + + const char *SelfFName = DladdrSelfFName(); + VPrintf(1, "dlopen interceptor: DladdrSelfFName: %p %s\n", + (const void *)SelfFName, SelfFName); + + if (SelfFName && internal_strcmp(SelfFName, filename) == 0) { + // It's possible they copied the string from dladdr, so + // we do a string comparison rather than pointer comparison. + VPrintf(1, "dlopen interceptor: replacing %s because it matches %s\n", + filename, SelfFName); + filename = (char *)0; // RTLD_DEFAULT + } + } +# endif // !SANITIZER_DYNAMIC + } + + void *res = COMMON_INTERCEPTOR_DLOPEN(filename, flag); + Symbolizer::GetOrInit()->InvalidateModuleList(); + COMMON_INTERCEPTOR_LIBRARY_LOADED(filename, res); + return res; +} + +INTERCEPTOR(int, dlclose, void *handle) { + void *ctx; + COMMON_INTERCEPTOR_ENTER_NOIGNORE(ctx, dlclose, handle); + int res = REAL(dlclose)(handle); + Symbolizer::GetOrInit()->InvalidateModuleList(); + COMMON_INTERCEPTOR_LIBRARY_UNLOADED(); + return res; +} +#define INIT_DLOPEN_DLCLOSE \ + COMMON_INTERCEPT_FUNCTION(dlopen); \ + COMMON_INTERCEPT_FUNCTION(dlclose); +#else +#define INIT_DLOPEN_DLCLOSE +#endif + +#if SANITIZER_INTERCEPT_GETPASS +INTERCEPTOR(char *, getpass, const char *prompt) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getpass, prompt); + if (prompt) + COMMON_INTERCEPTOR_READ_RANGE(ctx, prompt, internal_strlen(prompt)+1); + char *res = REAL(getpass)(prompt); + if (res) COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res)+1); + return res; +} + +#define INIT_GETPASS COMMON_INTERCEPT_FUNCTION(getpass); +#else +#define INIT_GETPASS +#endif + +#if SANITIZER_INTERCEPT_TIMERFD +INTERCEPTOR(int, timerfd_settime, int fd, int flags, void *new_value, + void *old_value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, timerfd_settime, fd, flags, new_value, + old_value); + COMMON_INTERCEPTOR_READ_RANGE(ctx, new_value, struct_itimerspec_sz); + int res = REAL(timerfd_settime)(fd, flags, new_value, old_value); + if (res != -1 && old_value) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, old_value, struct_itimerspec_sz); + return res; +} + +INTERCEPTOR(int, timerfd_gettime, int fd, void *curr_value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, timerfd_gettime, fd, curr_value); + int res = REAL(timerfd_gettime)(fd, curr_value); + if (res != -1 && curr_value) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, curr_value, struct_itimerspec_sz); + return res; +} +#define INIT_TIMERFD \ + COMMON_INTERCEPT_FUNCTION(timerfd_settime); \ + COMMON_INTERCEPT_FUNCTION(timerfd_gettime); +#else +#define INIT_TIMERFD +#endif + +#if SANITIZER_INTERCEPT_MLOCKX +// Linux kernel has a bug that leads to kernel deadlock if a process +// maps TBs of memory and then calls mlock(). +static void MlockIsUnsupported() { + static atomic_uint8_t printed; + if (atomic_exchange(&printed, 1, memory_order_relaxed)) + return; + VPrintf(1, "%s ignores mlock/mlockall/munlock/munlockall\n", + SanitizerToolName); +} + +INTERCEPTOR(int, mlock, const void *addr, usize len) { + MlockIsUnsupported(); + return 0; +} + +INTERCEPTOR(int, munlock, const void *addr, usize len) { + MlockIsUnsupported(); + return 0; +} + +INTERCEPTOR(int, mlockall, int flags) { + MlockIsUnsupported(); + return 0; +} + +INTERCEPTOR(int, munlockall, void) { + MlockIsUnsupported(); + return 0; +} + +#define INIT_MLOCKX \ + COMMON_INTERCEPT_FUNCTION(mlock); \ + COMMON_INTERCEPT_FUNCTION(munlock); \ + COMMON_INTERCEPT_FUNCTION(mlockall); \ + COMMON_INTERCEPT_FUNCTION(munlockall); + +#else +#define INIT_MLOCKX +#endif // SANITIZER_INTERCEPT_MLOCKX + +#if SANITIZER_INTERCEPT_FOPENCOOKIE +struct WrappedCookie { + void *real_cookie; + __sanitizer_cookie_io_functions_t real_io_funcs; +}; + +static uptr wrapped_read(void *cookie, char *buf, uptr size) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; + __sanitizer_cookie_io_read real_read = wrapped_cookie->real_io_funcs.read; + return real_read ? real_read(wrapped_cookie->real_cookie, buf, size) : 0; +} + +static uptr wrapped_write(void *cookie, const char *buf, uptr size) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; + __sanitizer_cookie_io_write real_write = wrapped_cookie->real_io_funcs.write; + return real_write ? real_write(wrapped_cookie->real_cookie, buf, size) : size; +} + +static int wrapped_seek(void *cookie, u64 *offset, int whence) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(offset, sizeof(*offset)); + WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; + __sanitizer_cookie_io_seek real_seek = wrapped_cookie->real_io_funcs.seek; + return real_seek ? real_seek(wrapped_cookie->real_cookie, offset, whence) + : -1; +} + +static int wrapped_close(void *cookie) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + WrappedCookie *wrapped_cookie = (WrappedCookie *)cookie; + __sanitizer_cookie_io_close real_close = wrapped_cookie->real_io_funcs.close; + int res = real_close ? real_close(wrapped_cookie->real_cookie) : 0; + InternalFree(wrapped_cookie); + return res; +} + +INTERCEPTOR(__sanitizer_FILE *, fopencookie, void *cookie, const char *mode, + __sanitizer_cookie_io_functions_t io_funcs) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fopencookie, cookie, mode, io_funcs); + WrappedCookie *wrapped_cookie = + (WrappedCookie *)InternalAlloc(sizeof(WrappedCookie)); + wrapped_cookie->real_cookie = cookie; + wrapped_cookie->real_io_funcs = io_funcs; + __sanitizer_FILE *res = + REAL(fopencookie)(wrapped_cookie, mode, {wrapped_read, wrapped_write, + wrapped_seek, wrapped_close}); + return res; +} + +#define INIT_FOPENCOOKIE COMMON_INTERCEPT_FUNCTION(fopencookie); +#else +#define INIT_FOPENCOOKIE +#endif // SANITIZER_INTERCEPT_FOPENCOOKIE + +#if SANITIZER_INTERCEPT_SEM +INTERCEPTOR(int, sem_init, __sanitizer_sem_t *s, int pshared, unsigned value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_init, s, pshared, value); + // Workaround a bug in glibc's "old" semaphore implementation by + // zero-initializing the sem_t contents. This has to be done here because + // interceptors bind to the lowest version before glibc 2.36, hitting the + // buggy code path while the non-sanitized build of the same code works fine. + REAL(memset)(s, 0, sizeof(*s)); + int res = REAL(sem_init)(s, pshared, value); + return res; +} + +INTERCEPTOR(int, sem_destroy, __sanitizer_sem_t *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_destroy, s); + int res = REAL(sem_destroy)(s); + return res; +} + +INTERCEPTOR(int, sem_wait, __sanitizer_sem_t *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_wait, s); + int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_wait)(s); + if (res == 0) { + COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); + } + return res; +} + +INTERCEPTOR(int, sem_trywait, __sanitizer_sem_t *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_trywait, s); + int res = REAL(sem_trywait)(s); + if (res == 0) { + COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); + } + return res; +} + +INTERCEPTOR(int, sem_timedwait, __sanitizer_sem_t *s, void *abstime) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_timedwait, s, abstime); + COMMON_INTERCEPTOR_READ_RANGE(ctx, abstime, struct_timespec_sz); + int res = COMMON_INTERCEPTOR_BLOCK_REAL(sem_timedwait)(s, abstime); + if (res == 0) { + COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); + } + return res; +} + +INTERCEPTOR(int, sem_post, __sanitizer_sem_t *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_post, s); + COMMON_INTERCEPTOR_RELEASE(ctx, (uptr)s); + int res = REAL(sem_post)(s); + return res; +} + +INTERCEPTOR(int, sem_getvalue, __sanitizer_sem_t *s, int *sval) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_getvalue, s, sval); + int res = REAL(sem_getvalue)(s, sval); + if (res == 0) { + COMMON_INTERCEPTOR_ACQUIRE(ctx, (uptr)s); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sval, sizeof(*sval)); + } + return res; +} + +INTERCEPTOR(__sanitizer_sem_t *, sem_open, const char *name, int oflag, ...) { + void *ctx; + va_list ap; + va_start(ap, oflag); + u32 mode = va_arg(ap, u32); + u32 value = va_arg(ap, u32); + COMMON_INTERCEPTOR_ENTER(ctx, sem_open, name, oflag, mode, value); + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + __sanitizer_sem_t *s = REAL(sem_open)(name, oflag, mode, value); + if (s) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(s, sizeof(*s)); + va_end(ap); + return s; +} + +INTERCEPTOR(int, sem_unlink, const char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sem_unlink, name); + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + return REAL(sem_unlink)(name); +} + +# define INIT_SEM \ + COMMON_INTERCEPT_FUNCTION(sem_init); \ + COMMON_INTERCEPT_FUNCTION(sem_destroy); \ + COMMON_INTERCEPT_FUNCTION(sem_wait); \ + COMMON_INTERCEPT_FUNCTION(sem_trywait); \ + COMMON_INTERCEPT_FUNCTION(sem_timedwait); \ + COMMON_INTERCEPT_FUNCTION(sem_post); \ + COMMON_INTERCEPT_FUNCTION(sem_getvalue); \ + COMMON_INTERCEPT_FUNCTION(sem_open); \ + COMMON_INTERCEPT_FUNCTION(sem_unlink); +#else +# define INIT_SEM +#endif // SANITIZER_INTERCEPT_SEM + +#if SANITIZER_INTERCEPT_PTHREAD_SETCANCEL +INTERCEPTOR(int, pthread_setcancelstate, int state, int *oldstate) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcancelstate, state, oldstate); + int res = REAL(pthread_setcancelstate)(state, oldstate); + if (res == 0 && oldstate != nullptr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldstate, sizeof(*oldstate)); + return res; +} + +INTERCEPTOR(int, pthread_setcanceltype, int type, int *oldtype) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pthread_setcanceltype, type, oldtype); + int res = REAL(pthread_setcanceltype)(type, oldtype); + if (res == 0 && oldtype != nullptr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldtype, sizeof(*oldtype)); + return res; +} +#define INIT_PTHREAD_SETCANCEL \ + COMMON_INTERCEPT_FUNCTION(pthread_setcancelstate); \ + COMMON_INTERCEPT_FUNCTION(pthread_setcanceltype); +#else +#define INIT_PTHREAD_SETCANCEL +#endif + +#if SANITIZER_INTERCEPT_MINCORE +INTERCEPTOR(int, mincore, void *addr, uptr length, unsigned char *vec) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, mincore, addr, length, vec); + int res = REAL(mincore)(addr, length, vec); + if (res == 0) { + uptr page_size = GetPageSizeCached(); + uptr vec_size = ((length + page_size - 1) & (~(page_size - 1))) / page_size; + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, vec, vec_size); + } + return res; +} +#define INIT_MINCORE COMMON_INTERCEPT_FUNCTION(mincore); +#else +#define INIT_MINCORE +#endif + +#if SANITIZER_INTERCEPT_PROCESS_VM_READV +INTERCEPTOR(SSIZE_T, process_vm_readv, int pid, __sanitizer_iovec *local_iov, + uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt, + uptr flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, process_vm_readv, pid, local_iov, liovcnt, + remote_iov, riovcnt, flags); + SSIZE_T res = REAL(process_vm_readv)(pid, local_iov, liovcnt, remote_iov, + riovcnt, flags); + if (res > 0) + write_iovec(ctx, local_iov, liovcnt, res); + return res; +} + +INTERCEPTOR(SSIZE_T, process_vm_writev, int pid, __sanitizer_iovec *local_iov, + uptr liovcnt, __sanitizer_iovec *remote_iov, uptr riovcnt, + uptr flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, process_vm_writev, pid, local_iov, liovcnt, + remote_iov, riovcnt, flags); + SSIZE_T res = REAL(process_vm_writev)(pid, local_iov, liovcnt, remote_iov, + riovcnt, flags); + if (res > 0) + read_iovec(ctx, local_iov, liovcnt, res); + return res; +} +#define INIT_PROCESS_VM_READV \ + COMMON_INTERCEPT_FUNCTION(process_vm_readv); \ + COMMON_INTERCEPT_FUNCTION(process_vm_writev); +#else +#define INIT_PROCESS_VM_READV +#endif + +#if SANITIZER_INTERCEPT_CTERMID +INTERCEPTOR(char *, ctermid, char *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ctermid, s); + char *res = REAL(ctermid)(s); + if (res) { + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + } + return res; +} +#define INIT_CTERMID COMMON_INTERCEPT_FUNCTION(ctermid); +#else +#define INIT_CTERMID +#endif + +#if SANITIZER_INTERCEPT_CTERMID_R +INTERCEPTOR(char *, ctermid_r, char *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ctermid_r, s); + char *res = REAL(ctermid_r)(s); + if (res) { + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, internal_strlen(res) + 1); + } + return res; +} +#define INIT_CTERMID_R COMMON_INTERCEPT_FUNCTION(ctermid_r); +#else +#define INIT_CTERMID_R +#endif + +#if SANITIZER_INTERCEPT_RECV_RECVFROM +INTERCEPTOR(SSIZE_T, recv, int fd, void *buf, SIZE_T len, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, recv, fd, buf, len, flags); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recv)(fd, buf, len, flags); + if (res > 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len)); + } + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} + +INTERCEPTOR(SSIZE_T, recvfrom, int fd, void *buf, SIZE_T len, int flags, + void *srcaddr, int *addrlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, recvfrom, fd, buf, len, flags, srcaddr, + addrlen); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + SIZE_T srcaddr_sz; + if (srcaddr) srcaddr_sz = *addrlen; + (void)srcaddr_sz; // prevent "set but not used" warning + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(recvfrom)(fd, buf, len, flags, + srcaddr, addrlen); + if (res > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, Min((SIZE_T)res, len)); + if (res >= 0 && srcaddr) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(srcaddr, + Min((SIZE_T)*addrlen, srcaddr_sz)); + return res; +} +#define INIT_RECV_RECVFROM \ + COMMON_INTERCEPT_FUNCTION(recv); \ + COMMON_INTERCEPT_FUNCTION(recvfrom); +#else +#define INIT_RECV_RECVFROM +#endif + +#if SANITIZER_INTERCEPT_SEND_SENDTO +INTERCEPTOR(SSIZE_T, send, int fd, void *buf, SIZE_T len, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, send, fd, buf, len, flags); + if (fd >= 0) { + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + } + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(send)(fd, buf, len, flags); + if (common_flags()->intercept_send && res > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len)); + return res; +} + +INTERCEPTOR(SSIZE_T, sendto, int fd, void *buf, SIZE_T len, int flags, + void *dstaddr, int addrlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sendto, fd, buf, len, flags, dstaddr, addrlen); + if (fd >= 0) { + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + } + // Can't check dstaddr as it may have uninitialized padding at the end. + SSIZE_T res = COMMON_INTERCEPTOR_BLOCK_REAL(sendto)(fd, buf, len, flags, + dstaddr, addrlen); + if (common_flags()->intercept_send && res > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, buf, Min((SIZE_T)res, len)); + return res; +} +#define INIT_SEND_SENDTO \ + COMMON_INTERCEPT_FUNCTION(send); \ + COMMON_INTERCEPT_FUNCTION(sendto); +#else +#define INIT_SEND_SENDTO +#endif + +#if SANITIZER_INTERCEPT_EVENTFD_READ_WRITE +INTERCEPTOR(int, eventfd_read, int fd, __sanitizer_eventfd_t *value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, eventfd_read, fd, value); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + int res = COMMON_INTERCEPTOR_BLOCK_REAL(eventfd_read)(fd, value); + if (res == 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, value, sizeof(*value)); + if (fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + } + return res; +} +INTERCEPTOR(int, eventfd_write, int fd, __sanitizer_eventfd_t value) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, eventfd_write, fd, value); + if (fd >= 0) { + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + } + int res = COMMON_INTERCEPTOR_BLOCK_REAL(eventfd_write)(fd, value); + return res; +} +#define INIT_EVENTFD_READ_WRITE \ + COMMON_INTERCEPT_FUNCTION(eventfd_read); \ + COMMON_INTERCEPT_FUNCTION(eventfd_write) +#else +#define INIT_EVENTFD_READ_WRITE +#endif + +#if SANITIZER_INTERCEPT_STAT +INTERCEPTOR(int, stat, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, stat, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(stat)(path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); + return res; +} +#define INIT_STAT COMMON_INTERCEPT_FUNCTION(stat) +#else +#define INIT_STAT +#endif + +#if SANITIZER_INTERCEPT_STAT64 +INTERCEPTOR(int, stat64, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, stat64, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(stat64)(path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); + return res; +} +#define INIT_STAT64 COMMON_INTERCEPT_FUNCTION(stat64) +#else +#define INIT_STAT64 +#endif + + +#if SANITIZER_INTERCEPT_LSTAT +INTERCEPTOR(int, lstat, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lstat, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(lstat)(path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); + return res; +} +#define INIT_LSTAT COMMON_INTERCEPT_FUNCTION(lstat) +#else +#define INIT_LSTAT +#endif + +#if SANITIZER_INTERCEPT_STAT64 +INTERCEPTOR(int, lstat64, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, lstat64, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(lstat64)(path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); + return res; +} +#define INIT_LSTAT64 COMMON_INTERCEPT_FUNCTION(lstat64) +#else +#define INIT_LSTAT64 +#endif + +#if SANITIZER_INTERCEPT___XSTAT +INTERCEPTOR(int, __xstat, int version, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __xstat, version, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(__xstat)(version, path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); + return res; +} +#define INIT___XSTAT COMMON_INTERCEPT_FUNCTION(__xstat) +#else +#define INIT___XSTAT +#endif + +#if SANITIZER_INTERCEPT___XSTAT64 +INTERCEPTOR(int, __xstat64, int version, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __xstat64, version, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(__xstat64)(version, path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); + return res; +} +#define INIT___XSTAT64 COMMON_INTERCEPT_FUNCTION(__xstat64) +#else +#define INIT___XSTAT64 +#endif + +#if SANITIZER_INTERCEPT___LXSTAT +INTERCEPTOR(int, __lxstat, int version, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __lxstat, version, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(__lxstat)(version, path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat_sz); + return res; +} +#define INIT___LXSTAT COMMON_INTERCEPT_FUNCTION(__lxstat) +#else +#define INIT___LXSTAT +#endif + +#if SANITIZER_INTERCEPT___LXSTAT64 +INTERCEPTOR(int, __lxstat64, int version, const char *path, void *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __lxstat64, version, path, buf); + if (common_flags()->intercept_stat) + COMMON_INTERCEPTOR_READ_STRING(ctx, path, 0); + int res = REAL(__lxstat64)(version, path, buf); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer::struct_stat64_sz); + return res; +} +#define INIT___LXSTAT64 COMMON_INTERCEPT_FUNCTION(__lxstat64) +#else +#define INIT___LXSTAT64 +#endif + +// FIXME: add other *stat interceptor + +#if SANITIZER_INTERCEPT_UTMP +INTERCEPTOR(void *, getutent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getutent, dummy); + void *res = REAL(getutent)(dummy); + if (res) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); + return res; +} +INTERCEPTOR(void *, getutid, void *ut) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getutid, ut); + void *res = REAL(getutid)(ut); + if (res) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); + return res; +} +INTERCEPTOR(void *, getutline, void *ut) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getutline, ut); + void *res = REAL(getutline)(ut); + if (res) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmp_sz); + return res; +} +#define INIT_UTMP \ + COMMON_INTERCEPT_FUNCTION(getutent); \ + COMMON_INTERCEPT_FUNCTION(getutid); \ + COMMON_INTERCEPT_FUNCTION(getutline); +#else +#define INIT_UTMP +#endif + +#if SANITIZER_INTERCEPT_UTMPX +INTERCEPTOR(void *, getutxent, int dummy) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getutxent, dummy); + void *res = REAL(getutxent)(dummy); + if (res) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); + return res; +} +INTERCEPTOR(void *, getutxid, void *ut) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getutxid, ut); + void *res = REAL(getutxid)(ut); + if (res) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); + return res; +} +INTERCEPTOR(void *, getutxline, void *ut) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getutxline, ut); + void *res = REAL(getutxline)(ut); + if (res) + COMMON_INTERCEPTOR_INITIALIZE_RANGE(res, __sanitizer::struct_utmpx_sz); + return res; +} +INTERCEPTOR(void *, pututxline, const void *ut) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pututxline, ut); + if (ut) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ut, __sanitizer::struct_utmpx_sz); + void *res = REAL(pututxline)(ut); + if (res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_utmpx_sz); + return res; +} +#define INIT_UTMPX \ + COMMON_INTERCEPT_FUNCTION(getutxent); \ + COMMON_INTERCEPT_FUNCTION(getutxid); \ + COMMON_INTERCEPT_FUNCTION(getutxline); \ + COMMON_INTERCEPT_FUNCTION(pututxline); +#else +#define INIT_UTMPX +#endif + +#if SANITIZER_INTERCEPT_GETLOADAVG +INTERCEPTOR(int, getloadavg, double *loadavg, int nelem) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getloadavg, loadavg, nelem); + int res = REAL(getloadavg)(loadavg, nelem); + if (res > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, loadavg, res * sizeof(*loadavg)); + return res; +} +#define INIT_GETLOADAVG \ + COMMON_INTERCEPT_FUNCTION(getloadavg); +#else +#define INIT_GETLOADAVG +#endif + +#if SANITIZER_INTERCEPT_MCHECK_MPROBE +INTERCEPTOR(int, mcheck, void (*abortfunc)(int mstatus)) { + return 0; +} + +INTERCEPTOR(int, mcheck_pedantic, void (*abortfunc)(int mstatus)) { + return 0; +} + +INTERCEPTOR(int, mprobe, void *ptr) { + return 0; +} +#endif + +#if SANITIZER_INTERCEPT_WCSLEN +INTERCEPTOR(SIZE_T, wcslen, const wchar_t *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcslen, s); + SIZE_T res = REAL(wcslen)(s); + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (res + 1)); + return res; +} + +INTERCEPTOR(SIZE_T, wcsnlen, const wchar_t *s, SIZE_T n) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcsnlen, s, n); + SIZE_T res = REAL(wcsnlen)(s, n); + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * Min(res + 1, n)); + return res; +} +#define INIT_WCSLEN \ + COMMON_INTERCEPT_FUNCTION(wcslen); \ + COMMON_INTERCEPT_FUNCTION(wcsnlen); +#else +#define INIT_WCSLEN +#endif + +#if SANITIZER_INTERCEPT_WCSCAT +INTERCEPTOR(wchar_t *, wcscat, wchar_t *dst, const wchar_t *src) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcscat, dst, src); + SIZE_T src_size = internal_wcslen(src); + SIZE_T dst_size = internal_wcslen(dst); + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, (src_size + 1) * sizeof(wchar_t)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size, + (src_size + 1) * sizeof(wchar_t)); + return REAL(wcscat)(dst, src); +} + +INTERCEPTOR(wchar_t *, wcsncat, wchar_t *dst, const wchar_t *src, SIZE_T n) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcsncat, dst, src, n); + SIZE_T src_size = internal_wcsnlen(src, n); + SIZE_T dst_size = internal_wcslen(dst); + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, + Min(src_size + 1, n) * sizeof(wchar_t)); + COMMON_INTERCEPTOR_READ_RANGE(ctx, dst, (dst_size + 1) * sizeof(wchar_t)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst + dst_size, + (src_size + 1) * sizeof(wchar_t)); + return REAL(wcsncat)(dst, src, n); +} +#define INIT_WCSCAT \ + COMMON_INTERCEPT_FUNCTION(wcscat); \ + COMMON_INTERCEPT_FUNCTION(wcsncat); +#else +#define INIT_WCSCAT +#endif + +#if SANITIZER_INTERCEPT_WCSDUP +INTERCEPTOR(wchar_t *, wcsdup, wchar_t *s) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, wcsdup, s); + SIZE_T len = internal_wcslen(s); + COMMON_INTERCEPTOR_READ_RANGE(ctx, s, sizeof(wchar_t) * (len + 1)); + wchar_t *result = REAL(wcsdup)(s); + if (result) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof(wchar_t) * (len + 1)); + return result; +} + +#define INIT_WCSDUP COMMON_INTERCEPT_FUNCTION(wcsdup); +#else +#define INIT_WCSDUP +#endif + +#if SANITIZER_INTERCEPT_STRXFRM +static SIZE_T RealStrLen(const char *str) { return internal_strlen(str); } + +static SIZE_T RealStrLen(const wchar_t *str) { return internal_wcslen(str); } + +#define STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len, ...) \ + { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, strxfrm, dest, src, len, ##__VA_ARGS__); \ + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, \ + sizeof(*src) * (RealStrLen(src) + 1)); \ + SIZE_T res = REAL(strxfrm)(dest, src, len, ##__VA_ARGS__); \ + if (res < len) \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dest, sizeof(*src) * (res + 1)); \ + return res; \ + } + +INTERCEPTOR(SIZE_T, strxfrm, char *dest, const char *src, SIZE_T len) { + STRXFRM_INTERCEPTOR_IMPL(strxfrm, dest, src, len); +} + +INTERCEPTOR(SIZE_T, strxfrm_l, char *dest, const char *src, SIZE_T len, + void *locale) { + STRXFRM_INTERCEPTOR_IMPL(strxfrm_l, dest, src, len, locale); +} + +#define INIT_STRXFRM \ + COMMON_INTERCEPT_FUNCTION(strxfrm); \ + COMMON_INTERCEPT_FUNCTION(strxfrm_l); +#else +#define INIT_STRXFRM +#endif + +#if SANITIZER_INTERCEPT___STRXFRM_L +INTERCEPTOR(SIZE_T, __strxfrm_l, char *dest, const char *src, SIZE_T len, + void *locale) { + STRXFRM_INTERCEPTOR_IMPL(__strxfrm_l, dest, src, len, locale); +} + +#define INIT___STRXFRM_L COMMON_INTERCEPT_FUNCTION(__strxfrm_l); +#else +#define INIT___STRXFRM_L +#endif + +#if SANITIZER_INTERCEPT_WCSXFRM +INTERCEPTOR(SIZE_T, wcsxfrm, wchar_t *dest, const wchar_t *src, SIZE_T len) { + STRXFRM_INTERCEPTOR_IMPL(wcsxfrm, dest, src, len); +} + +INTERCEPTOR(SIZE_T, wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len, + void *locale) { + STRXFRM_INTERCEPTOR_IMPL(wcsxfrm_l, dest, src, len, locale); +} + +#define INIT_WCSXFRM \ + COMMON_INTERCEPT_FUNCTION(wcsxfrm); \ + COMMON_INTERCEPT_FUNCTION(wcsxfrm_l); +#else +#define INIT_WCSXFRM +#endif + +#if SANITIZER_INTERCEPT___WCSXFRM_L +INTERCEPTOR(SIZE_T, __wcsxfrm_l, wchar_t *dest, const wchar_t *src, SIZE_T len, + void *locale) { + STRXFRM_INTERCEPTOR_IMPL(__wcsxfrm_l, dest, src, len, locale); +} + +#define INIT___WCSXFRM_L COMMON_INTERCEPT_FUNCTION(__wcsxfrm_l); +#else +#define INIT___WCSXFRM_L +#endif + +#if SANITIZER_INTERCEPT_ACCT +INTERCEPTOR(int, acct, const char *file) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, acct, file); + if (file) + COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1); + return REAL(acct)(file); +} +#define INIT_ACCT COMMON_INTERCEPT_FUNCTION(acct) +#else +#define INIT_ACCT +#endif + +#if SANITIZER_INTERCEPT_USER_FROM_UID +INTERCEPTOR(const char *, user_from_uid, u32 uid, int nouser) { + void *ctx; + const char *user; + COMMON_INTERCEPTOR_ENTER(ctx, user_from_uid, uid, nouser); + user = REAL(user_from_uid)(uid, nouser); + if (user) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, user, internal_strlen(user) + 1); + return user; +} +#define INIT_USER_FROM_UID COMMON_INTERCEPT_FUNCTION(user_from_uid) +#else +#define INIT_USER_FROM_UID +#endif + +#if SANITIZER_INTERCEPT_UID_FROM_USER +INTERCEPTOR(int, uid_from_user, const char *name, u32 *uid) { + void *ctx; + int res; + COMMON_INTERCEPTOR_ENTER(ctx, uid_from_user, name, uid); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + res = REAL(uid_from_user)(name, uid); + if (uid) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, uid, sizeof(*uid)); + return res; +} +#define INIT_UID_FROM_USER COMMON_INTERCEPT_FUNCTION(uid_from_user) +#else +#define INIT_UID_FROM_USER +#endif + +#if SANITIZER_INTERCEPT_GROUP_FROM_GID +INTERCEPTOR(const char *, group_from_gid, u32 gid, int nogroup) { + void *ctx; + const char *group; + COMMON_INTERCEPTOR_ENTER(ctx, group_from_gid, gid, nogroup); + group = REAL(group_from_gid)(gid, nogroup); + if (group) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, group, internal_strlen(group) + 1); + return group; +} +#define INIT_GROUP_FROM_GID COMMON_INTERCEPT_FUNCTION(group_from_gid) +#else +#define INIT_GROUP_FROM_GID +#endif + +#if SANITIZER_INTERCEPT_GID_FROM_GROUP +INTERCEPTOR(int, gid_from_group, const char *group, u32 *gid) { + void *ctx; + int res; + COMMON_INTERCEPTOR_ENTER(ctx, gid_from_group, group, gid); + if (group) + COMMON_INTERCEPTOR_READ_RANGE(ctx, group, internal_strlen(group) + 1); + res = REAL(gid_from_group)(group, gid); + if (gid) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, gid, sizeof(*gid)); + return res; +} +#define INIT_GID_FROM_GROUP COMMON_INTERCEPT_FUNCTION(gid_from_group) +#else +#define INIT_GID_FROM_GROUP +#endif + +#if SANITIZER_INTERCEPT_ACCESS +INTERCEPTOR(int, access, const char *path, int mode) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, access, path, mode); + if (path) + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + return REAL(access)(path, mode); +} +#define INIT_ACCESS COMMON_INTERCEPT_FUNCTION(access) +#else +#define INIT_ACCESS +#endif + +#if SANITIZER_INTERCEPT_FACCESSAT +INTERCEPTOR(int, faccessat, int fd, const char *path, int mode, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, faccessat, fd, path, mode, flags); + if (path) + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + return REAL(faccessat)(fd, path, mode, flags); +} +#define INIT_FACCESSAT COMMON_INTERCEPT_FUNCTION(faccessat) +#else +#define INIT_FACCESSAT +#endif + +#if SANITIZER_INTERCEPT_GETGROUPLIST +INTERCEPTOR(int, getgrouplist, const char *name, u32 basegid, u32 *groups, + int *ngroups) { + void *ctx; + int res; + COMMON_INTERCEPTOR_ENTER(ctx, getgrouplist, name, basegid, groups, ngroups); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + if (ngroups) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ngroups, sizeof(*ngroups)); + res = REAL(getgrouplist)(name, basegid, groups, ngroups); + if (!res && groups && ngroups) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups)); + } + return res; +} + +#define INIT_GETGROUPLIST COMMON_INTERCEPT_FUNCTION(getgrouplist); +#else +#define INIT_GETGROUPLIST +#endif + +#if SANITIZER_INTERCEPT_GETGROUPMEMBERSHIP +INTERCEPTOR(int, getgroupmembership, const char *name, u32 basegid, u32 *groups, + int maxgrp, int *ngroups) { + void *ctx; + int res; + COMMON_INTERCEPTOR_ENTER(ctx, getgroupmembership, name, basegid, groups, + maxgrp, ngroups); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + res = REAL(getgroupmembership)(name, basegid, groups, maxgrp, ngroups); + if (!res && groups && ngroups) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, groups, sizeof(*groups) * (*ngroups)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ngroups, sizeof(*ngroups)); + } + return res; +} + +#define INIT_GETGROUPMEMBERSHIP COMMON_INTERCEPT_FUNCTION(getgroupmembership); +#else +#define INIT_GETGROUPMEMBERSHIP +#endif + +#if SANITIZER_INTERCEPT_READLINK +INTERCEPTOR(SSIZE_T, readlink, const char *path, char *buf, SIZE_T bufsiz) { + void* ctx; + COMMON_INTERCEPTOR_ENTER(ctx, readlink, path, buf, bufsiz); + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + SSIZE_T res = REAL(readlink)(path, buf, bufsiz); + if (res > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res); + return res; +} + +#define INIT_READLINK COMMON_INTERCEPT_FUNCTION(readlink) +#else +#define INIT_READLINK +#endif + +#if SANITIZER_INTERCEPT_READLINKAT +INTERCEPTOR(SSIZE_T, readlinkat, int dirfd, const char *path, char *buf, + SIZE_T bufsiz) { + void* ctx; + COMMON_INTERCEPTOR_ENTER(ctx, readlinkat, dirfd, path, buf, bufsiz); + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + SSIZE_T res = REAL(readlinkat)(dirfd, path, buf, bufsiz); + if (res > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res); + return res; +} + +#define INIT_READLINKAT COMMON_INTERCEPT_FUNCTION(readlinkat) +#else +#define INIT_READLINKAT +#endif + +#if SANITIZER_INTERCEPT_NAME_TO_HANDLE_AT +INTERCEPTOR(int, name_to_handle_at, int dirfd, const char *pathname, + struct file_handle *handle, int *mount_id, int flags) { + void* ctx; + COMMON_INTERCEPTOR_ENTER(ctx, name_to_handle_at, dirfd, pathname, handle, + mount_id, flags); + COMMON_INTERCEPTOR_READ_RANGE(ctx, pathname, internal_strlen(pathname) + 1); + + __sanitizer_file_handle *sanitizer_handle = + reinterpret_cast<__sanitizer_file_handle*>(handle); + COMMON_INTERCEPTOR_READ_RANGE( + ctx, &sanitizer_handle->handle_bytes, + sizeof(sanitizer_handle->handle_bytes)); + + int res = REAL(name_to_handle_at)(dirfd, pathname, handle, mount_id, flags); + if (!res) { + COMMON_INTERCEPTOR_WRITE_RANGE( + ctx, &sanitizer_handle->handle_bytes, + sizeof(sanitizer_handle->handle_bytes)); + COMMON_INTERCEPTOR_WRITE_RANGE( + ctx, &sanitizer_handle->handle_type, + sizeof(sanitizer_handle->handle_type)); + COMMON_INTERCEPTOR_WRITE_RANGE( + ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mount_id, sizeof(*mount_id)); + } + return res; +} + +#define INIT_NAME_TO_HANDLE_AT COMMON_INTERCEPT_FUNCTION(name_to_handle_at) +#else +#define INIT_NAME_TO_HANDLE_AT +#endif + +#if SANITIZER_INTERCEPT_OPEN_BY_HANDLE_AT +INTERCEPTOR(int, open_by_handle_at, int mount_fd, struct file_handle* handle, + int flags) { + void* ctx; + COMMON_INTERCEPTOR_ENTER(ctx, open_by_handle_at, mount_fd, handle, flags); + + __sanitizer_file_handle *sanitizer_handle = + reinterpret_cast<__sanitizer_file_handle*>(handle); + COMMON_INTERCEPTOR_READ_RANGE( + ctx, &sanitizer_handle->handle_bytes, + sizeof(sanitizer_handle->handle_bytes)); + COMMON_INTERCEPTOR_READ_RANGE( + ctx, &sanitizer_handle->handle_type, + sizeof(sanitizer_handle->handle_type)); + COMMON_INTERCEPTOR_READ_RANGE( + ctx, &sanitizer_handle->f_handle, sanitizer_handle->handle_bytes); + + return COMMON_INTERCEPTOR_BLOCK_REAL(open_by_handle_at)(mount_fd, handle, + flags); +} + +#define INIT_OPEN_BY_HANDLE_AT COMMON_INTERCEPT_FUNCTION(open_by_handle_at) +#else +#define INIT_OPEN_BY_HANDLE_AT +#endif + +#if SANITIZER_INTERCEPT_STRLCPY +INTERCEPTOR(SIZE_T, strlcpy, char *dst, char *src, SIZE_T size) { + void *ctx; + SIZE_T res; + COMMON_INTERCEPTOR_ENTER(ctx, strlcpy, dst, src, size); + if (src) { + // Keep strnlen as macro argument, as macro may ignore it. + COMMON_INTERCEPTOR_READ_STRING( + ctx, src, Min(internal_strnlen(src, size), size - 1) + 1); + } + res = REAL(strlcpy)(dst, src, size); + COMMON_INTERCEPTOR_COPY_STRING(ctx, dst, src, internal_strlen(dst) + 1); + return res; +} + +INTERCEPTOR(SIZE_T, strlcat, char *dst, char *src, SIZE_T size) { + void *ctx; + SIZE_T len = 0; + COMMON_INTERCEPTOR_ENTER(ctx, strlcat, dst, src, size); + // src is checked in the strlcpy() interceptor + if (dst) { + len = internal_strnlen(dst, size); + COMMON_INTERCEPTOR_READ_STRING(ctx, dst, Min(len, size - 1) + 1); + } + // Reuse the rest of the code in the strlcpy() interceptor + return WRAP(strlcpy)(dst + len, src, size - len) + len; +} +#define INIT_STRLCPY \ + COMMON_INTERCEPT_FUNCTION(strlcpy); \ + COMMON_INTERCEPT_FUNCTION(strlcat); +#else +#define INIT_STRLCPY +#endif + +#if SANITIZER_INTERCEPT_MMAP +INTERCEPTOR(void *, mmap, void *addr, SIZE_T sz, int prot, int flags, int fd, + OFF_T off) { + void *ctx; + if (common_flags()->detect_write_exec) + ReportMmapWriteExec(prot, flags); + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return (void *)internal_mmap(addr, sz, prot, flags, fd, off); + COMMON_INTERCEPTOR_ENTER(ctx, mmap, addr, sz, prot, flags, fd, off); + COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap, addr, sz, prot, flags, fd, off); +} + +INTERCEPTOR(int, munmap, void *addr, SIZE_T sz) { + void *ctx; + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return (int)internal_munmap(addr, sz); + COMMON_INTERCEPTOR_ENTER(ctx, munmap, addr, sz); + COMMON_INTERCEPTOR_MUNMAP_IMPL(ctx, addr, sz); +} + +INTERCEPTOR(int, mprotect, void *addr, SIZE_T sz, int prot) { + void *ctx; + if (common_flags()->detect_write_exec) + ReportMmapWriteExec(prot, 0); + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return (int)internal_mprotect(addr, sz, prot); + COMMON_INTERCEPTOR_ENTER(ctx, mprotect, addr, sz, prot); + MprotectMallocZones(addr, prot); + return REAL(mprotect)(addr, sz, prot); +} +#define INIT_MMAP \ + COMMON_INTERCEPT_FUNCTION(mmap); \ + COMMON_INTERCEPT_FUNCTION(munmap); \ + COMMON_INTERCEPT_FUNCTION(mprotect); +#else +#define INIT_MMAP +#endif + +#if SANITIZER_INTERCEPT_MMAP64 +INTERCEPTOR(void *, mmap64, void *addr, SIZE_T sz, int prot, int flags, int fd, + OFF64_T off) { + void *ctx; + if (common_flags()->detect_write_exec) + ReportMmapWriteExec(prot, flags); + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return (void *)internal_mmap(addr, sz, prot, flags, fd, off); + COMMON_INTERCEPTOR_ENTER(ctx, mmap64, addr, sz, prot, flags, fd, off); + COMMON_INTERCEPTOR_MMAP_IMPL(ctx, mmap64, addr, sz, prot, flags, fd, off); +} +#define INIT_MMAP64 COMMON_INTERCEPT_FUNCTION(mmap64); +#else +#define INIT_MMAP64 +#endif + +#if SANITIZER_INTERCEPT_DEVNAME +INTERCEPTOR(char *, devname, u64 dev, u32 type) { + void *ctx; + char *name; + COMMON_INTERCEPTOR_ENTER(ctx, devname, dev, type); + name = REAL(devname)(dev, type); + if (name) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); + return name; +} +#define INIT_DEVNAME COMMON_INTERCEPT_FUNCTION(devname); +#else +#define INIT_DEVNAME +#endif + +#if SANITIZER_INTERCEPT_DEVNAME_R +#if SANITIZER_NETBSD +#define DEVNAME_R_RETTYPE int +#define DEVNAME_R_SUCCESS(x) (!(x)) +#else +#define DEVNAME_R_RETTYPE char* +#define DEVNAME_R_SUCCESS(x) (x) +#endif +INTERCEPTOR(DEVNAME_R_RETTYPE, devname_r, u64 dev, u32 type, char *path, + uptr len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, devname_r, dev, type, path, len); + DEVNAME_R_RETTYPE res = REAL(devname_r)(dev, type, path, len); + if (DEVNAME_R_SUCCESS(res)) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, path, internal_strlen(path) + 1); + return res; +} +#define INIT_DEVNAME_R COMMON_INTERCEPT_FUNCTION(devname_r); +#else +#define INIT_DEVNAME_R +#endif + +#if SANITIZER_INTERCEPT_FGETLN +INTERCEPTOR(char *, fgetln, __sanitizer_FILE *stream, SIZE_T *len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgetln, stream, len); + char *str = REAL(fgetln)(stream, len); + if (str && len) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, str, *len); + } + return str; +} +#define INIT_FGETLN COMMON_INTERCEPT_FUNCTION(fgetln) +#else +#define INIT_FGETLN +#endif + +#if SANITIZER_INTERCEPT_STRMODE +INTERCEPTOR(void, strmode, u32 mode, char *bp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strmode, mode, bp); + REAL(strmode)(mode, bp); + if (bp) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, bp, internal_strlen(bp) + 1); +} +#define INIT_STRMODE COMMON_INTERCEPT_FUNCTION(strmode) +#else +#define INIT_STRMODE +#endif + +#if SANITIZER_INTERCEPT_TTYENT +INTERCEPTOR(struct __sanitizer_ttyent *, getttyent, void) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getttyent); + struct __sanitizer_ttyent *ttyent = REAL(getttyent)(); + if (ttyent) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz); + return ttyent; +} +INTERCEPTOR(struct __sanitizer_ttyent *, getttynam, char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getttynam, name); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + struct __sanitizer_ttyent *ttyent = REAL(getttynam)(name); + if (ttyent) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ttyent, struct_ttyent_sz); + return ttyent; +} +#define INIT_TTYENT \ + COMMON_INTERCEPT_FUNCTION(getttyent); \ + COMMON_INTERCEPT_FUNCTION(getttynam); +#else +#define INIT_TTYENT +#endif + +#if SANITIZER_INTERCEPT_TTYENTPATH +INTERCEPTOR(int, setttyentpath, char *path) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setttyentpath, path); + if (path) + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + return REAL(setttyentpath)(path); +} +#define INIT_TTYENTPATH COMMON_INTERCEPT_FUNCTION(setttyentpath); +#else +#define INIT_TTYENTPATH +#endif + +#if SANITIZER_INTERCEPT_PROTOENT +static void write_protoent(void *ctx, struct __sanitizer_protoent *p) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p, sizeof(*p)); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_name, internal_strlen(p->p_name) + 1); + + SIZE_T pp_size = 1; // One handles the trailing \0 + + for (char **pp = p->p_aliases; *pp; ++pp, ++pp_size) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *pp, internal_strlen(*pp) + 1); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, p->p_aliases, pp_size * sizeof(char *)); +} + +INTERCEPTOR(struct __sanitizer_protoent *, getprotoent,) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getprotoent,); + struct __sanitizer_protoent *p = REAL(getprotoent)(); + if (p) + write_protoent(ctx, p); + return p; +} + +INTERCEPTOR(struct __sanitizer_protoent *, getprotobyname, const char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname, name); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + struct __sanitizer_protoent *p = REAL(getprotobyname)(name); + if (p) + write_protoent(ctx, p); + return p; +} + +INTERCEPTOR(struct __sanitizer_protoent *, getprotobynumber, int proto) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber, proto); + struct __sanitizer_protoent *p = REAL(getprotobynumber)(proto); + if (p) + write_protoent(ctx, p); + return p; +} +#define INIT_PROTOENT \ + COMMON_INTERCEPT_FUNCTION(getprotoent); \ + COMMON_INTERCEPT_FUNCTION(getprotobyname); \ + COMMON_INTERCEPT_FUNCTION(getprotobynumber) +#else +#define INIT_PROTOENT +#endif + +#if SANITIZER_INTERCEPT_PROTOENT_R +INTERCEPTOR(int, getprotoent_r, struct __sanitizer_protoent *result_buf, + char *buf, SIZE_T buflen, struct __sanitizer_protoent **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getprotoent_r, result_buf, buf, buflen, + result); + int res = REAL(getprotoent_r)(result_buf, buf, buflen, result); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result); + if (!res && *result) + write_protoent(ctx, *result); + return res; +} + +INTERCEPTOR(int, getprotobyname_r, const char *name, + struct __sanitizer_protoent *result_buf, char *buf, SIZE_T buflen, + struct __sanitizer_protoent **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getprotobyname_r, name, result_buf, buf, + buflen, result); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + int res = REAL(getprotobyname_r)(name, result_buf, buf, buflen, result); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result); + if (!res && *result) + write_protoent(ctx, *result); + return res; +} + +INTERCEPTOR(int, getprotobynumber_r, int num, + struct __sanitizer_protoent *result_buf, char *buf, + SIZE_T buflen, struct __sanitizer_protoent **result) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getprotobynumber_r, num, result_buf, buf, + buflen, result); + int res = REAL(getprotobynumber_r)(num, result_buf, buf, buflen, result); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, result, sizeof *result); + if (!res && *result) + write_protoent(ctx, *result); + return res; +} + +#define INIT_PROTOENT_R \ + COMMON_INTERCEPT_FUNCTION(getprotoent_r); \ + COMMON_INTERCEPT_FUNCTION(getprotobyname_r); \ + COMMON_INTERCEPT_FUNCTION(getprotobynumber_r); +#else +#define INIT_PROTOENT_R +#endif + +#if SANITIZER_INTERCEPT_NETENT +INTERCEPTOR(struct __sanitizer_netent *, getnetent,) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getnetent,); + struct __sanitizer_netent *n = REAL(getnetent)(); + if (n) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1); + + SIZE_T nn_size = 1; // One handles the trailing \0 + + for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *)); + } + return n; +} + +INTERCEPTOR(struct __sanitizer_netent *, getnetbyname, const char *name) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getnetbyname, name); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + struct __sanitizer_netent *n = REAL(getnetbyname)(name); + if (n) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1); + + SIZE_T nn_size = 1; // One handles the trailing \0 + + for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *)); + } + return n; +} + +INTERCEPTOR(struct __sanitizer_netent *, getnetbyaddr, u32 net, int type) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getnetbyaddr, net, type); + struct __sanitizer_netent *n = REAL(getnetbyaddr)(net, type); + if (n) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n, sizeof(*n)); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_name, internal_strlen(n->n_name) + 1); + + SIZE_T nn_size = 1; // One handles the trailing \0 + + for (char **nn = n->n_aliases; *nn; ++nn, ++nn_size) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *nn, internal_strlen(*nn) + 1); + + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, n->n_aliases, nn_size * sizeof(char *)); + } + return n; +} +#define INIT_NETENT \ + COMMON_INTERCEPT_FUNCTION(getnetent); \ + COMMON_INTERCEPT_FUNCTION(getnetbyname); \ + COMMON_INTERCEPT_FUNCTION(getnetbyaddr) +#else +#define INIT_NETENT +#endif + +#if SANITIZER_INTERCEPT_GETMNTINFO +INTERCEPTOR(int, getmntinfo, void **mntbufp, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getmntinfo, mntbufp, flags); + int cnt = REAL(getmntinfo)(mntbufp, flags); + if (cnt > 0 && mntbufp) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mntbufp, sizeof(void *)); + if (*mntbufp) +#if SANITIZER_NETBSD + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statvfs_sz); +#else + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *mntbufp, cnt * struct_statfs_sz); +#endif + } + return cnt; +} +#define INIT_GETMNTINFO COMMON_INTERCEPT_FUNCTION(getmntinfo) +#else +#define INIT_GETMNTINFO +#endif + +#if SANITIZER_INTERCEPT_MI_VECTOR_HASH +INTERCEPTOR(void, mi_vector_hash, const void *key, SIZE_T len, u32 seed, + u32 hashes[3]) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, mi_vector_hash, key, len, seed, hashes); + if (key) + COMMON_INTERCEPTOR_READ_RANGE(ctx, key, len); + REAL(mi_vector_hash)(key, len, seed, hashes); + if (hashes) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, hashes, sizeof(hashes[0]) * 3); +} +#define INIT_MI_VECTOR_HASH COMMON_INTERCEPT_FUNCTION(mi_vector_hash) +#else +#define INIT_MI_VECTOR_HASH +#endif + +#if SANITIZER_INTERCEPT_SETVBUF +INTERCEPTOR(int, setvbuf, __sanitizer_FILE *stream, char *buf, int mode, + SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setvbuf, stream, buf, mode, size); + int ret = REAL(setvbuf)(stream, buf, mode, size); + if (buf) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size); + if (stream) + unpoison_file(stream); + return ret; +} + +INTERCEPTOR(void, setbuf, __sanitizer_FILE *stream, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setbuf, stream, buf); + REAL(setbuf)(stream, buf); + if (buf) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, __sanitizer_bufsiz); + } + if (stream) + unpoison_file(stream); +} + +INTERCEPTOR(void, setbuffer, __sanitizer_FILE *stream, char *buf, SIZE_T size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setbuffer, stream, buf, size); + REAL(setbuffer)(stream, buf, size); + if (buf) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, size); + } + if (stream) + unpoison_file(stream); +} + +INTERCEPTOR(void, setlinebuf, __sanitizer_FILE *stream) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, setlinebuf, stream); + REAL(setlinebuf)(stream); + if (stream) + unpoison_file(stream); +} +#define INIT_SETVBUF COMMON_INTERCEPT_FUNCTION(setvbuf); \ + COMMON_INTERCEPT_FUNCTION(setbuf); \ + COMMON_INTERCEPT_FUNCTION(setbuffer); \ + COMMON_INTERCEPT_FUNCTION(setlinebuf) +#else +#define INIT_SETVBUF +#endif + +#if SANITIZER_INTERCEPT_GETVFSSTAT +INTERCEPTOR(int, getvfsstat, void *buf, SIZE_T bufsize, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getvfsstat, buf, bufsize, flags); + int ret = REAL(getvfsstat)(buf, bufsize, flags); + if (buf && ret > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, ret * struct_statvfs_sz); + return ret; +} +#define INIT_GETVFSSTAT COMMON_INTERCEPT_FUNCTION(getvfsstat) +#else +#define INIT_GETVFSSTAT +#endif + +#if SANITIZER_INTERCEPT_REGEX +INTERCEPTOR(int, regcomp, void *preg, const char *pattern, int cflags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, regcomp, preg, pattern, cflags); + if (pattern) + COMMON_INTERCEPTOR_READ_RANGE(ctx, pattern, internal_strlen(pattern) + 1); + int res = REAL(regcomp)(preg, pattern, cflags); + if (preg) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, preg, struct_regex_sz); + return res; +} +INTERCEPTOR(int, regexec, const void *preg, const char *string, SIZE_T nmatch, + struct __sanitizer_regmatch *pmatch[], int eflags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, regexec, preg, string, nmatch, pmatch, eflags); + if (preg) + COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); + if (string) + COMMON_INTERCEPTOR_READ_RANGE(ctx, string, internal_strlen(string) + 1); + int res = REAL(regexec)(preg, string, nmatch, pmatch, eflags); + if (!res && pmatch) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pmatch, nmatch * struct_regmatch_sz); + return res; +} +INTERCEPTOR(SIZE_T, regerror, int errcode, const void *preg, char *errbuf, + SIZE_T errbuf_size) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, regerror, errcode, preg, errbuf, errbuf_size); + if (preg) + COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); + SIZE_T res = REAL(regerror)(errcode, preg, errbuf, errbuf_size); + if (errbuf) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errbuf, internal_strlen(errbuf) + 1); + return res; +} +INTERCEPTOR(void, regfree, const void *preg) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, regfree, preg); + if (preg) + COMMON_INTERCEPTOR_READ_RANGE(ctx, preg, struct_regex_sz); + REAL(regfree)(preg); +} +#define INIT_REGEX \ + COMMON_INTERCEPT_FUNCTION(regcomp); \ + COMMON_INTERCEPT_FUNCTION_GLIBC_VER_MIN(regexec, "GLIBC_2.3.4"); \ + COMMON_INTERCEPT_FUNCTION(regerror); \ + COMMON_INTERCEPT_FUNCTION(regfree); +#else +#define INIT_REGEX +#endif + +#if SANITIZER_INTERCEPT_REGEXSUB +INTERCEPTOR(SSIZE_T, regnsub, char *buf, SIZE_T bufsiz, const char *sub, + const struct __sanitizer_regmatch *rm, const char *str) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, regnsub, buf, bufsiz, sub, rm, str); + if (sub) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1); + // The implementation demands and hardcodes 10 elements + if (rm) + COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz); + if (str) + COMMON_INTERCEPTOR_READ_RANGE(ctx, str, internal_strlen(str) + 1); + SSIZE_T res = REAL(regnsub)(buf, bufsiz, sub, rm, str); + if (res > 0 && buf) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1); + return res; +} +INTERCEPTOR(SSIZE_T, regasub, char **buf, const char *sub, + const struct __sanitizer_regmatch *rm, const char *sstr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, regasub, buf, sub, rm, sstr); + if (sub) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sub, internal_strlen(sub) + 1); + // Hardcode 10 elements as this is hardcoded size + if (rm) + COMMON_INTERCEPTOR_READ_RANGE(ctx, rm, 10 * struct_regmatch_sz); + if (sstr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sstr, internal_strlen(sstr) + 1); + SSIZE_T res = REAL(regasub)(buf, sub, rm, sstr); + if (res > 0 && buf) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, sizeof(char *)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *buf, internal_strlen(*buf) + 1); + } + return res; +} + +#define INIT_REGEXSUB \ + COMMON_INTERCEPT_FUNCTION(regnsub); \ + COMMON_INTERCEPT_FUNCTION(regasub); +#else +#define INIT_REGEXSUB +#endif + +#if SANITIZER_INTERCEPT_FTS +INTERCEPTOR(void *, fts_open, char *const *path_argv, int options, + int (*compar)(void **, void **)) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fts_open, path_argv, options, compar); + if (path_argv) { + for (char *const *pa = path_argv; ; ++pa) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); + if (!*pa) + break; + COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1); + } + } + // TODO(kamil): handle compar callback + void *fts = REAL(fts_open)(path_argv, options, compar); + if (fts) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, fts, struct_FTS_sz); + return fts; +} + +INTERCEPTOR(void *, fts_read, void *ftsp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fts_read, ftsp); + if (ftsp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); + void *ftsent = REAL(fts_read)(ftsp); + if (ftsent) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz); + return ftsent; +} + +INTERCEPTOR(void *, fts_children, void *ftsp, int options) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fts_children, ftsp, options); + if (ftsp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); + void *ftsent = REAL(fts_children)(ftsp, options); + if (ftsent) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ftsent, struct_FTSENT_sz); + return ftsent; +} + +INTERCEPTOR(int, fts_set, void *ftsp, void *f, int options) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fts_set, ftsp, f, options); + if (ftsp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); + if (f) + COMMON_INTERCEPTOR_READ_RANGE(ctx, f, struct_FTSENT_sz); + return REAL(fts_set)(ftsp, f, options); +} + +INTERCEPTOR(int, fts_close, void *ftsp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fts_close, ftsp); + if (ftsp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ftsp, struct_FTS_sz); + return REAL(fts_close)(ftsp); +} +#define INIT_FTS \ + COMMON_INTERCEPT_FUNCTION(fts_open); \ + COMMON_INTERCEPT_FUNCTION(fts_read); \ + COMMON_INTERCEPT_FUNCTION(fts_children); \ + COMMON_INTERCEPT_FUNCTION(fts_set); \ + COMMON_INTERCEPT_FUNCTION(fts_close); +#else +#define INIT_FTS +#endif + +#if SANITIZER_INTERCEPT_SYSCTL +INTERCEPTOR(int, sysctl, int *name, unsigned int namelen, void *oldp, + SIZE_T *oldlenp, void *newp, SIZE_T newlen) { + void *ctx; + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_sysctl(name, namelen, oldp, oldlenp, newp, newlen); + COMMON_INTERCEPTOR_ENTER(ctx, sysctl, name, namelen, oldp, oldlenp, newp, + newlen); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, namelen * sizeof(*name)); + if (oldlenp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp)); + if (newp && newlen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen); + int res = REAL(sysctl)(name, namelen, oldp, oldlenp, newp, newlen); + if (!res) { + if (oldlenp) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp)); + if (oldp) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp); + } + } + return res; +} + +INTERCEPTOR(int, sysctlbyname, char *sname, void *oldp, SIZE_T *oldlenp, + void *newp, SIZE_T newlen) { + void *ctx; + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_sysctlbyname(sname, oldp, oldlenp, newp, newlen); + COMMON_INTERCEPTOR_ENTER(ctx, sysctlbyname, sname, oldp, oldlenp, newp, + newlen); + if (sname) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); + if (oldlenp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, oldlenp, sizeof(*oldlenp)); + if (newp && newlen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, newp, newlen); + int res = REAL(sysctlbyname)(sname, oldp, oldlenp, newp, newlen); + if (!res) { + if (oldlenp) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldlenp, sizeof(*oldlenp)); + if (oldp) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oldp, *oldlenp); + } + } + return res; +} + +INTERCEPTOR(int, sysctlnametomib, const char *sname, int *name, + SIZE_T *namelenp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sysctlnametomib, sname, name, namelenp); + if (sname) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); + if (namelenp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp)); + int res = REAL(sysctlnametomib)(sname, name, namelenp); + if (!res) { + if (namelenp) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp)); + if (name) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name)); + } + } + return res; +} + +#define INIT_SYSCTL \ + COMMON_INTERCEPT_FUNCTION(sysctl); \ + COMMON_INTERCEPT_FUNCTION(sysctlbyname); \ + COMMON_INTERCEPT_FUNCTION(sysctlnametomib); +#else +#define INIT_SYSCTL +#endif + +#if SANITIZER_INTERCEPT_ASYSCTL +INTERCEPTOR(void *, asysctl, const int *name, SIZE_T namelen, SIZE_T *len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, asysctl, name, namelen, len); + if (name) + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, sizeof(*name) * namelen); + void *res = REAL(asysctl)(name, namelen, len); + if (res && len) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len); + } + return res; +} + +INTERCEPTOR(void *, asysctlbyname, const char *sname, SIZE_T *len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, asysctlbyname, sname, len); + if (sname) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); + void *res = REAL(asysctlbyname)(sname, len); + if (res && len) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, *len); + } + return res; +} +#define INIT_ASYSCTL \ + COMMON_INTERCEPT_FUNCTION(asysctl); \ + COMMON_INTERCEPT_FUNCTION(asysctlbyname); +#else +#define INIT_ASYSCTL +#endif + +#if SANITIZER_INTERCEPT_SYSCTLGETMIBINFO +INTERCEPTOR(int, sysctlgetmibinfo, char *sname, int *name, + unsigned int *namelenp, char *cname, SIZE_T *csz, void **rnode, + int v) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sysctlgetmibinfo, sname, name, namelenp, cname, + csz, rnode, v); + if (sname) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sname, internal_strlen(sname) + 1); + if (namelenp) + COMMON_INTERCEPTOR_READ_RANGE(ctx, namelenp, sizeof(*namelenp)); + if (csz) + COMMON_INTERCEPTOR_READ_RANGE(ctx, csz, sizeof(*csz)); + // Skip rnode, it's rarely used and not trivial to sanitize + // It's also used mostly internally + int res = REAL(sysctlgetmibinfo)(sname, name, namelenp, cname, csz, rnode, v); + if (!res) { + if (namelenp) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, namelenp, sizeof(*namelenp)); + if (name) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, *namelenp * sizeof(*name)); + } + if (csz) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, csz, sizeof(*csz)); + if (cname) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cname, *csz); + } + } + return res; +} +#define INIT_SYSCTLGETMIBINFO \ + COMMON_INTERCEPT_FUNCTION(sysctlgetmibinfo); +#else +#define INIT_SYSCTLGETMIBINFO +#endif + +#if SANITIZER_INTERCEPT_NL_LANGINFO +INTERCEPTOR(char *, nl_langinfo, long item) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, nl_langinfo, item); + char *ret = REAL(nl_langinfo)(item); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1); + return ret; +} +#define INIT_NL_LANGINFO COMMON_INTERCEPT_FUNCTION(nl_langinfo) +#else +#define INIT_NL_LANGINFO +#endif + +#if SANITIZER_INTERCEPT_MODCTL +INTERCEPTOR(int, modctl, int operation, void *argp) { + void *ctx; + int ret; + COMMON_INTERCEPTOR_ENTER(ctx, modctl, operation, argp); + + if (operation == modctl_load) { + if (argp) { + __sanitizer_modctl_load_t *ml = (__sanitizer_modctl_load_t *)argp; + COMMON_INTERCEPTOR_READ_RANGE(ctx, ml, sizeof(*ml)); + if (ml->ml_filename) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_filename, + internal_strlen(ml->ml_filename) + 1); + if (ml->ml_props) + COMMON_INTERCEPTOR_READ_RANGE(ctx, ml->ml_props, ml->ml_propslen); + } + ret = REAL(modctl)(operation, argp); + } else if (operation == modctl_unload) { + if (argp) { + const char *name = (const char *)argp; + COMMON_INTERCEPTOR_READ_RANGE(ctx, name, internal_strlen(name) + 1); + } + ret = REAL(modctl)(operation, argp); + } else if (operation == modctl_stat) { + uptr iov_len; + struct __sanitizer_iovec *iov = (struct __sanitizer_iovec *)argp; + if (iov) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, iov, sizeof(*iov)); + iov_len = iov->iov_len; + } + ret = REAL(modctl)(operation, argp); + if (iov) + COMMON_INTERCEPTOR_WRITE_RANGE( + ctx, iov->iov_base, Min(iov_len, iov->iov_len)); + } else if (operation == modctl_exists) { + ret = REAL(modctl)(operation, argp); + } else { + ret = REAL(modctl)(operation, argp); + } + + return ret; +} +#define INIT_MODCTL COMMON_INTERCEPT_FUNCTION(modctl) +#else +#define INIT_MODCTL +#endif + +#if SANITIZER_INTERCEPT_STRTONUM +INTERCEPTOR(long long, strtonum, const char *nptr, long long minval, + long long maxval, const char **errstr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strtonum, nptr, minval, maxval, errstr); + + // TODO(kamil): Implement strtoll as a common inteceptor + char *real_endptr; + long long ret = (long long)REAL(strtoimax)(nptr, &real_endptr, 10); + StrtolFixAndCheck(ctx, nptr, nullptr, real_endptr, 10); + + ret = REAL(strtonum)(nptr, minval, maxval, errstr); + if (errstr) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, errstr, sizeof(const char *)); + if (*errstr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *errstr, internal_strlen(*errstr) + 1); + } + return ret; +} +#define INIT_STRTONUM COMMON_INTERCEPT_FUNCTION(strtonum) +#else +#define INIT_STRTONUM +#endif + +#if SANITIZER_INTERCEPT_FPARSELN +INTERCEPTOR(char *, fparseln, __sanitizer_FILE *stream, SIZE_T *len, + SIZE_T *lineno, const char delim[3], int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fparseln, stream, len, lineno, delim, flags); + if (lineno) + COMMON_INTERCEPTOR_READ_RANGE(ctx, lineno, sizeof(*lineno)); + if (delim) + COMMON_INTERCEPTOR_READ_RANGE(ctx, delim, sizeof(delim[0]) * 3); + char *ret = REAL(fparseln)(stream, len, lineno, delim, flags); + if (ret) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, internal_strlen(ret) + 1); + if (len) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, len, sizeof(*len)); + if (lineno) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, lineno, sizeof(*lineno)); + } + return ret; +} +#define INIT_FPARSELN COMMON_INTERCEPT_FUNCTION(fparseln) +#else +#define INIT_FPARSELN +#endif + +#if SANITIZER_INTERCEPT_STATVFS1 +INTERCEPTOR(int, statvfs1, const char *path, void *buf, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, statvfs1, path, buf, flags); + if (path) COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + int res = REAL(statvfs1)(path, buf, flags); + if (!res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); + return res; +} +INTERCEPTOR(int, fstatvfs1, int fd, void *buf, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fstatvfs1, fd, buf, flags); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + int res = REAL(fstatvfs1)(fd, buf, flags); + if (!res) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, struct_statvfs_sz); + if (fd >= 0) + COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + } + return res; +} +#define INIT_STATVFS1 \ + COMMON_INTERCEPT_FUNCTION(statvfs1); \ + COMMON_INTERCEPT_FUNCTION(fstatvfs1); +#else +#define INIT_STATVFS1 +#endif + +#if SANITIZER_INTERCEPT_STRTOI +INTERCEPTOR(INTMAX_T, strtoi, const char *nptr, char **endptr, int base, + INTMAX_T low, INTMAX_T high, int *rstatus) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strtoi, nptr, endptr, base, low, high, rstatus); + char *real_endptr; + INTMAX_T ret = REAL(strtoi)(nptr, &real_endptr, base, low, high, rstatus); + StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); + if (rstatus) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus)); + return ret; +} + +INTERCEPTOR(UINTMAX_T, strtou, const char *nptr, char **endptr, int base, + UINTMAX_T low, UINTMAX_T high, int *rstatus) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strtou, nptr, endptr, base, low, high, rstatus); + char *real_endptr; + UINTMAX_T ret = REAL(strtou)(nptr, &real_endptr, base, low, high, rstatus); + StrtolFixAndCheck(ctx, nptr, endptr, real_endptr, base); + if (rstatus) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rstatus, sizeof(*rstatus)); + return ret; +} +#define INIT_STRTOI \ + COMMON_INTERCEPT_FUNCTION(strtoi); \ + COMMON_INTERCEPT_FUNCTION(strtou) +#else +#define INIT_STRTOI +#endif + +#if SANITIZER_INTERCEPT_CAPSICUM +#define CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights, ...) \ + { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_init, rights, ##__VA_ARGS__); \ + if (rights) \ + COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ + __sanitizer_cap_rights_t *ret = \ + REAL(cap_rights_init)(rights, ##__VA_ARGS__); \ + if (ret) \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ + return ret; \ + } + +#define CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights, ...) \ + { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_set, rights, ##__VA_ARGS__); \ + if (rights) \ + COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ + __sanitizer_cap_rights_t *ret = \ + REAL(cap_rights_set)(rights, ##__VA_ARGS__); \ + if (ret) \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ + return ret; \ + } + +#define CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights, ...) \ + { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_clear, rights, ##__VA_ARGS__); \ + if (rights) \ + COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ + __sanitizer_cap_rights_t *ret = \ + REAL(cap_rights_clear)(rights, ##__VA_ARGS__); \ + if (ret) \ + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); \ + return ret; \ + } + +#define CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights, ...) \ + { \ + void *ctx; \ + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_set, rights, ##__VA_ARGS__); \ + if (rights) \ + COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); \ + return REAL(cap_rights_is_set)(rights, ##__VA_ARGS__); \ + } + +INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_init, + __sanitizer_cap_rights_t *rights) { + CAP_RIGHTS_INIT_INTERCEPTOR(cap_rights_init, rights); +} + +INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_set, + __sanitizer_cap_rights_t *rights) { + CAP_RIGHTS_SET_INTERCEPTOR(cap_rights_set, rights); +} + +INTERCEPTOR(__sanitizer_cap_rights_t *, cap_rights_clear, + __sanitizer_cap_rights_t *rights) { + CAP_RIGHTS_CLEAR_INTERCEPTOR(cap_rights_clear, rights); +} + +INTERCEPTOR(bool, cap_rights_is_set, + __sanitizer_cap_rights_t *rights) { + CAP_RIGHTS_IS_SET_INTERCEPTOR(cap_rights_is_set, rights); +} + +INTERCEPTOR(int, cap_rights_limit, int fd, + const __sanitizer_cap_rights_t *rights) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_limit, fd, rights); + if (rights) + COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); + + return REAL(cap_rights_limit)(fd, rights); +} + +INTERCEPTOR(int, cap_rights_get, int fd, __sanitizer_cap_rights_t *rights) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_get, fd, rights); + int ret = REAL(cap_rights_get)(fd, rights); + if (!ret && rights) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, rights, sizeof(*rights)); + + return ret; +} + +INTERCEPTOR(bool, cap_rights_is_valid, const __sanitizer_cap_rights_t *rights) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_is_valid, rights); + if (rights) + COMMON_INTERCEPTOR_READ_RANGE(ctx, rights, sizeof(*rights)); + + return REAL(cap_rights_is_valid(rights)); +} + +INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_merge, + __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_merge, dst, src); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); + + __sanitizer_cap_rights *ret = REAL(cap_rights_merge)(dst, src); + if (dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); + + return ret; +} + +INTERCEPTOR(__sanitizer_cap_rights *, cap_rights_remove, + __sanitizer_cap_rights *dst, const __sanitizer_cap_rights *src) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_remove, dst, src); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, sizeof(*src)); + + __sanitizer_cap_rights *ret = REAL(cap_rights_remove)(dst, src); + if (dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(*dst)); + + return ret; +} + +INTERCEPTOR(bool, cap_rights_contains, const __sanitizer_cap_rights *big, + const __sanitizer_cap_rights *little) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_rights_contains, big, little); + if (little) + COMMON_INTERCEPTOR_READ_RANGE(ctx, little, sizeof(*little)); + if (big) + COMMON_INTERCEPTOR_READ_RANGE(ctx, big, sizeof(*big)); + + return REAL(cap_rights_contains)(big, little); +} + +INTERCEPTOR(int, cap_ioctls_limit, int fd, const uptr *cmds, SIZE_T ncmds) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_limit, fd, cmds, ncmds); + if (cmds) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cmds, sizeof(*cmds) * ncmds); + + return REAL(cap_ioctls_limit)(fd, cmds, ncmds); +} + +INTERCEPTOR(int, cap_ioctls_get, int fd, uptr *cmds, SIZE_T maxcmds) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cap_ioctls_get, fd, cmds, maxcmds); + int ret = REAL(cap_ioctls_get)(fd, cmds, maxcmds); + if (!ret && cmds) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cmds, sizeof(*cmds) * maxcmds); + + return ret; +} +#define INIT_CAPSICUM \ + COMMON_INTERCEPT_FUNCTION(cap_rights_init); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_set); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_clear); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_is_set); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_get); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_limit); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_contains); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_remove); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_merge); \ + COMMON_INTERCEPT_FUNCTION(cap_rights_is_valid); \ + COMMON_INTERCEPT_FUNCTION(cap_ioctls_get); \ + COMMON_INTERCEPT_FUNCTION(cap_ioctls_limit) +#else +#define INIT_CAPSICUM +#endif + +#if SANITIZER_INTERCEPT_SHA1 +INTERCEPTOR(void, SHA1Init, void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1Init, context); + REAL(SHA1Init)(context); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz); +} +INTERCEPTOR(void, SHA1Update, void *context, const u8 *data, unsigned len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1Update, context, data, len); + if (data && len > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); + REAL(SHA1Update)(context, data, len); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, SHA1_CTX_sz); +} +INTERCEPTOR(void, SHA1Final, u8 digest[20], void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1Final, digest, context); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); + REAL(SHA1Final)(digest, context); + if (digest) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20); +} +INTERCEPTOR(void, SHA1Transform, u32 state[5], u8 buffer[64]) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1Transform, state, buffer); + if (state) + COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5); + if (buffer) + COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u8) * 64); + REAL(SHA1Transform)(state, buffer); + if (state) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5); +} +INTERCEPTOR(char *, SHA1End, void *context, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1End, context, buf); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, SHA1_CTX_sz); + char *ret = REAL(SHA1End)(context, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); + return ret; +} +INTERCEPTOR(char *, SHA1File, char *filename, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1File, filename, buf); + if (filename) + COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); + char *ret = REAL(SHA1File)(filename, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); + return ret; +} +INTERCEPTOR(char *, SHA1FileChunk, char *filename, char *buf, OFF_T offset, + OFF_T length) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1FileChunk, filename, buf, offset, length); + if (filename) + COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); + char *ret = REAL(SHA1FileChunk)(filename, buf, offset, length); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); + return ret; +} +INTERCEPTOR(char *, SHA1Data, u8 *data, SIZE_T len, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, SHA1Data, data, len, buf); + if (data) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + char *ret = REAL(SHA1Data)(data, len, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, SHA1_return_length); + return ret; +} +#define INIT_SHA1 \ + COMMON_INTERCEPT_FUNCTION(SHA1Init); \ + COMMON_INTERCEPT_FUNCTION(SHA1Update); \ + COMMON_INTERCEPT_FUNCTION(SHA1Final); \ + COMMON_INTERCEPT_FUNCTION(SHA1Transform); \ + COMMON_INTERCEPT_FUNCTION(SHA1End); \ + COMMON_INTERCEPT_FUNCTION(SHA1File); \ + COMMON_INTERCEPT_FUNCTION(SHA1FileChunk); \ + COMMON_INTERCEPT_FUNCTION(SHA1Data) +#else +#define INIT_SHA1 +#endif + +#if SANITIZER_INTERCEPT_MD4 +INTERCEPTOR(void, MD4Init, void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD4Init, context); + REAL(MD4Init)(context); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz); +} + +INTERCEPTOR(void, MD4Update, void *context, const unsigned char *data, + unsigned int len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD4Update, context, data, len); + if (data && len > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); + REAL(MD4Update)(context, data, len); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD4_CTX_sz); +} + +INTERCEPTOR(void, MD4Final, unsigned char digest[16], void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD4Final, digest, context); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); + REAL(MD4Final)(digest, context); + if (digest) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); +} + +INTERCEPTOR(char *, MD4End, void *context, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD4End, context, buf); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD4_CTX_sz); + char *ret = REAL(MD4End)(context, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); + return ret; +} + +INTERCEPTOR(char *, MD4File, const char *filename, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD4File, filename, buf); + if (filename) + COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); + char *ret = REAL(MD4File)(filename, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); + return ret; +} + +INTERCEPTOR(char *, MD4Data, const unsigned char *data, unsigned int len, + char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD4Data, data, len, buf); + if (data && len > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + char *ret = REAL(MD4Data)(data, len, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD4_return_length); + return ret; +} + +#define INIT_MD4 \ + COMMON_INTERCEPT_FUNCTION(MD4Init); \ + COMMON_INTERCEPT_FUNCTION(MD4Update); \ + COMMON_INTERCEPT_FUNCTION(MD4Final); \ + COMMON_INTERCEPT_FUNCTION(MD4End); \ + COMMON_INTERCEPT_FUNCTION(MD4File); \ + COMMON_INTERCEPT_FUNCTION(MD4Data) +#else +#define INIT_MD4 +#endif + +#if SANITIZER_INTERCEPT_RMD160 +INTERCEPTOR(void, RMD160Init, void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160Init, context); + REAL(RMD160Init)(context); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz); +} +INTERCEPTOR(void, RMD160Update, void *context, const u8 *data, unsigned len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160Update, context, data, len); + if (data && len > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); + REAL(RMD160Update)(context, data, len); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, RMD160_CTX_sz); +} +INTERCEPTOR(void, RMD160Final, u8 digest[20], void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160Final, digest, context); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); + REAL(RMD160Final)(digest, context); + if (digest) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(u8) * 20); +} +INTERCEPTOR(void, RMD160Transform, u32 state[5], u16 buffer[16]) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160Transform, state, buffer); + if (state) + COMMON_INTERCEPTOR_READ_RANGE(ctx, state, sizeof(u32) * 5); + if (buffer) + COMMON_INTERCEPTOR_READ_RANGE(ctx, buffer, sizeof(u32) * 16); + REAL(RMD160Transform)(state, buffer); + if (state) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, state, sizeof(u32) * 5); +} +INTERCEPTOR(char *, RMD160End, void *context, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160End, context, buf); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, RMD160_CTX_sz); + char *ret = REAL(RMD160End)(context, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); + return ret; +} +INTERCEPTOR(char *, RMD160File, char *filename, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160File, filename, buf); + if (filename) + COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); + char *ret = REAL(RMD160File)(filename, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); + return ret; +} +INTERCEPTOR(char *, RMD160FileChunk, char *filename, char *buf, OFF_T offset, + OFF_T length) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160FileChunk, filename, buf, offset, length); + if (filename) + COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); + char *ret = REAL(RMD160FileChunk)(filename, buf, offset, length); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); + return ret; +} +INTERCEPTOR(char *, RMD160Data, u8 *data, SIZE_T len, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, RMD160Data, data, len, buf); + if (data && len > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + char *ret = REAL(RMD160Data)(data, len, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, RMD160_return_length); + return ret; +} +#define INIT_RMD160 \ + COMMON_INTERCEPT_FUNCTION(RMD160Init); \ + COMMON_INTERCEPT_FUNCTION(RMD160Update); \ + COMMON_INTERCEPT_FUNCTION(RMD160Final); \ + COMMON_INTERCEPT_FUNCTION(RMD160Transform); \ + COMMON_INTERCEPT_FUNCTION(RMD160End); \ + COMMON_INTERCEPT_FUNCTION(RMD160File); \ + COMMON_INTERCEPT_FUNCTION(RMD160FileChunk); \ + COMMON_INTERCEPT_FUNCTION(RMD160Data) +#else +#define INIT_RMD160 +#endif + +#if SANITIZER_INTERCEPT_FSEEK +INTERCEPTOR(int, fseek, __sanitizer_FILE *stream, long int offset, int whence) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fseek, stream, offset, whence); + return REAL(fseek)(stream, offset, whence); +} +INTERCEPTOR(int, fseeko, __sanitizer_FILE *stream, OFF_T offset, int whence) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fseeko, stream, offset, whence); + return REAL(fseeko)(stream, offset, whence); +} +INTERCEPTOR(long int, ftell, __sanitizer_FILE *stream) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ftell, stream); + return REAL(ftell)(stream); +} +INTERCEPTOR(OFF_T, ftello, __sanitizer_FILE *stream) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, ftello, stream); + return REAL(ftello)(stream); +} +INTERCEPTOR(void, rewind, __sanitizer_FILE *stream) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, rewind, stream); + return REAL(rewind)(stream); +} +INTERCEPTOR(int, fgetpos, __sanitizer_FILE *stream, void *pos) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fgetpos, stream, pos); + int ret = REAL(fgetpos)(stream, pos); + if (pos && !ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, pos, fpos_t_sz); + return ret; +} +INTERCEPTOR(int, fsetpos, __sanitizer_FILE *stream, const void *pos) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fsetpos, stream, pos); + if (pos) + COMMON_INTERCEPTOR_READ_RANGE(ctx, pos, fpos_t_sz); + return REAL(fsetpos)(stream, pos); +} +#define INIT_FSEEK \ + COMMON_INTERCEPT_FUNCTION(fseek); \ + COMMON_INTERCEPT_FUNCTION(fseeko); \ + COMMON_INTERCEPT_FUNCTION(ftell); \ + COMMON_INTERCEPT_FUNCTION(ftello); \ + COMMON_INTERCEPT_FUNCTION(rewind); \ + COMMON_INTERCEPT_FUNCTION(fgetpos); \ + COMMON_INTERCEPT_FUNCTION(fsetpos) +#else +#define INIT_FSEEK +#endif + +#if SANITIZER_INTERCEPT_MD2 +INTERCEPTOR(void, MD2Init, void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD2Init, context); + REAL(MD2Init)(context); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz); +} + +INTERCEPTOR(void, MD2Update, void *context, const unsigned char *data, + unsigned int len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD2Update, context, data, len); + if (data && len > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); + REAL(MD2Update)(context, data, len); + if (context) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, context, MD2_CTX_sz); +} + +INTERCEPTOR(void, MD2Final, unsigned char digest[16], void *context) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD2Final, digest, context); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); + REAL(MD2Final)(digest, context); + if (digest) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, digest, sizeof(unsigned char) * 16); +} + +INTERCEPTOR(char *, MD2End, void *context, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD2End, context, buf); + if (context) + COMMON_INTERCEPTOR_READ_RANGE(ctx, context, MD2_CTX_sz); + char *ret = REAL(MD2End)(context, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); + return ret; +} + +INTERCEPTOR(char *, MD2File, const char *filename, char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD2File, filename, buf); + if (filename) + COMMON_INTERCEPTOR_READ_RANGE(ctx, filename, internal_strlen(filename) + 1); + char *ret = REAL(MD2File)(filename, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); + return ret; +} + +INTERCEPTOR(char *, MD2Data, const unsigned char *data, unsigned int len, + char *buf) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, MD2Data, data, len, buf); + if (data && len > 0) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, len); + char *ret = REAL(MD2Data)(data, len, buf); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, MD2_return_length); + return ret; +} + +#define INIT_MD2 \ + COMMON_INTERCEPT_FUNCTION(MD2Init); \ + COMMON_INTERCEPT_FUNCTION(MD2Update); \ + COMMON_INTERCEPT_FUNCTION(MD2Final); \ + COMMON_INTERCEPT_FUNCTION(MD2End); \ + COMMON_INTERCEPT_FUNCTION(MD2File); \ + COMMON_INTERCEPT_FUNCTION(MD2Data) +#else +#define INIT_MD2 +#endif + +#if SANITIZER_INTERCEPT_VIS +INTERCEPTOR(char *, vis, char *dst, int c, int flag, int nextc) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, vis, dst, c, flag, nextc); + char *end = REAL(vis)(dst, c, flag, nextc); + // dst is NULL terminated and end points to the NULL char + if (dst && end) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); + return end; +} +INTERCEPTOR(char *, nvis, char *dst, SIZE_T dlen, int c, int flag, int nextc) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, nvis, dst, dlen, c, flag, nextc); + char *end = REAL(nvis)(dst, dlen, c, flag, nextc); + // nvis cannot make sure the dst is NULL terminated + if (dst && end) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); + return end; +} +INTERCEPTOR(int, strvis, char *dst, const char *src, int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strvis, dst, src, flag); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int len = REAL(strvis)(dst, src, flag); + if (dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); + return len; +} +INTERCEPTOR(int, stravis, char **dst, const char *src, int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, stravis, dst, src, flag); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int len = REAL(stravis)(dst, src, flag); + if (dst) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, sizeof(char *)); + if (*dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *dst, len + 1); + } + return len; +} +INTERCEPTOR(int, strnvis, char *dst, SIZE_T dlen, const char *src, int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strnvis, dst, dlen, src, flag); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int len = REAL(strnvis)(dst, dlen, src, flag); + // The interface will be valid even if there is no space for NULL char + if (dst && len > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); + return len; +} +INTERCEPTOR(int, strvisx, char *dst, const char *src, SIZE_T len, int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strvisx, dst, src, len, flag); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); + int ret = REAL(strvisx)(dst, src, len, flag); + if (dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +INTERCEPTOR(int, strnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, + int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strnvisx, dst, dlen, src, len, flag); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); + int ret = REAL(strnvisx)(dst, dlen, src, len, flag); + if (dst && ret >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +INTERCEPTOR(int, strenvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, + int flag, int *cerr_ptr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strenvisx, dst, dlen, src, len, flag, cerr_ptr); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); + // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold + // according to the implementation + if (cerr_ptr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int)); + int ret = REAL(strenvisx)(dst, dlen, src, len, flag, cerr_ptr); + if (dst && ret >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + if (cerr_ptr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int)); + return ret; +} +INTERCEPTOR(char *, svis, char *dst, int c, int flag, int nextc, + const char *extra) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, svis, dst, c, flag, nextc, extra); + if (extra) + COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); + char *end = REAL(svis)(dst, c, flag, nextc, extra); + if (dst && end) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, end - dst + 1); + return end; +} +INTERCEPTOR(char *, snvis, char *dst, SIZE_T dlen, int c, int flag, int nextc, + const char *extra) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, snvis, dst, dlen, c, flag, nextc, extra); + if (extra) + COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); + char *end = REAL(snvis)(dst, dlen, c, flag, nextc, extra); + if (dst && end) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, + Min((SIZE_T)(end - dst + 1), dlen)); + return end; +} +INTERCEPTOR(int, strsvis, char *dst, const char *src, int flag, + const char *extra) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strsvis, dst, src, flag, extra); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + if (extra) + COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); + int len = REAL(strsvis)(dst, src, flag, extra); + if (dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); + return len; +} +INTERCEPTOR(int, strsnvis, char *dst, SIZE_T dlen, const char *src, int flag, + const char *extra) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strsnvis, dst, dlen, src, flag, extra); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + if (extra) + COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); + int len = REAL(strsnvis)(dst, dlen, src, flag, extra); + // The interface will be valid even if there is no space for NULL char + if (dst && len >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, len + 1); + return len; +} +INTERCEPTOR(int, strsvisx, char *dst, const char *src, SIZE_T len, int flag, + const char *extra) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strsvisx, dst, src, len, flag, extra); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); + if (extra) + COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); + int ret = REAL(strsvisx)(dst, src, len, flag, extra); + if (dst) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +INTERCEPTOR(int, strsnvisx, char *dst, SIZE_T dlen, const char *src, SIZE_T len, + int flag, const char *extra) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strsnvisx, dst, dlen, src, len, flag, extra); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); + if (extra) + COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); + int ret = REAL(strsnvisx)(dst, dlen, src, len, flag, extra); + if (dst && ret >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +INTERCEPTOR(int, strsenvisx, char *dst, SIZE_T dlen, const char *src, + SIZE_T len, int flag, const char *extra, int *cerr_ptr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strsenvisx, dst, dlen, src, len, flag, extra, + cerr_ptr); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, len); + if (extra) + COMMON_INTERCEPTOR_READ_RANGE(ctx, extra, internal_strlen(extra) + 1); + // FIXME: only need to be checked when "flag | VIS_NOLOCALE" doesn't hold + // according to the implementation + if (cerr_ptr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cerr_ptr, sizeof(int)); + int ret = REAL(strsenvisx)(dst, dlen, src, len, flag, extra, cerr_ptr); + if (dst && ret >= 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + if (cerr_ptr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cerr_ptr, sizeof(int)); + return ret; +} +INTERCEPTOR(int, unvis, char *cp, int c, int *astate, int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, unvis, cp, c, astate, flag); + if (astate) + COMMON_INTERCEPTOR_READ_RANGE(ctx, astate, sizeof(*astate)); + int ret = REAL(unvis)(cp, c, astate, flag); + if (ret == unvis_valid || ret == unvis_validpush) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cp, sizeof(*cp)); + } + return ret; +} +INTERCEPTOR(int, strunvis, char *dst, const char *src) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strunvis, dst, src); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int ret = REAL(strunvis)(dst, src); + if (ret != -1) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +INTERCEPTOR(int, strnunvis, char *dst, SIZE_T dlen, const char *src) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strnunvis, dst, dlen, src); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int ret = REAL(strnunvis)(dst, dlen, src); + if (ret != -1) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +INTERCEPTOR(int, strunvisx, char *dst, const char *src, int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strunvisx, dst, src, flag); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int ret = REAL(strunvisx)(dst, src, flag); + if (ret != -1) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +INTERCEPTOR(int, strnunvisx, char *dst, SIZE_T dlen, const char *src, + int flag) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, strnunvisx, dst, dlen, src, flag); + if (src) + COMMON_INTERCEPTOR_READ_RANGE(ctx, src, internal_strlen(src) + 1); + int ret = REAL(strnunvisx)(dst, dlen, src, flag); + if (ret != -1) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, dst, ret + 1); + return ret; +} +#define INIT_VIS \ + COMMON_INTERCEPT_FUNCTION(vis); \ + COMMON_INTERCEPT_FUNCTION(nvis); \ + COMMON_INTERCEPT_FUNCTION(strvis); \ + COMMON_INTERCEPT_FUNCTION(stravis); \ + COMMON_INTERCEPT_FUNCTION(strnvis); \ + COMMON_INTERCEPT_FUNCTION(strvisx); \ + COMMON_INTERCEPT_FUNCTION(strnvisx); \ + COMMON_INTERCEPT_FUNCTION(strenvisx); \ + COMMON_INTERCEPT_FUNCTION(svis); \ + COMMON_INTERCEPT_FUNCTION(snvis); \ + COMMON_INTERCEPT_FUNCTION(strsvis); \ + COMMON_INTERCEPT_FUNCTION(strsnvis); \ + COMMON_INTERCEPT_FUNCTION(strsvisx); \ + COMMON_INTERCEPT_FUNCTION(strsnvisx); \ + COMMON_INTERCEPT_FUNCTION(strsenvisx); \ + COMMON_INTERCEPT_FUNCTION(unvis); \ + COMMON_INTERCEPT_FUNCTION(strunvis); \ + COMMON_INTERCEPT_FUNCTION(strnunvis); \ + COMMON_INTERCEPT_FUNCTION(strunvisx); \ + COMMON_INTERCEPT_FUNCTION(strnunvisx) +#else +#define INIT_VIS +#endif + +#if SANITIZER_INTERCEPT_CDB +INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open, const char *path, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open, path, flags); + if (path) + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + struct __sanitizer_cdbr *cdbr = REAL(cdbr_open)(path, flags); + if (cdbr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr)); + return cdbr; +} + +INTERCEPTOR(struct __sanitizer_cdbr *, cdbr_open_mem, void *base, SIZE_T size, + int flags, void (*unmap)(void *, void *, SIZE_T), void *cookie) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbr_open_mem, base, size, flags, unmap, + cookie); + if (base && size) + COMMON_INTERCEPTOR_READ_RANGE(ctx, base, size); + struct __sanitizer_cdbr *cdbr = + REAL(cdbr_open_mem)(base, size, flags, unmap, cookie); + if (cdbr) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbr, sizeof(*cdbr)); + return cdbr; +} + +INTERCEPTOR(u32, cdbr_entries, struct __sanitizer_cdbr *cdbr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbr_entries, cdbr); + if (cdbr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); + return REAL(cdbr_entries)(cdbr); +} + +INTERCEPTOR(int, cdbr_get, struct __sanitizer_cdbr *cdbr, u32 index, + const void **data, SIZE_T *datalen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbr_get, cdbr, index, data, datalen); + if (cdbr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); + int ret = REAL(cdbr_get)(cdbr, index, data, datalen); + if (!ret) { + if (data) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data)); + if (datalen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen)); + if (data && datalen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen); + } + return ret; +} + +INTERCEPTOR(int, cdbr_find, struct __sanitizer_cdbr *cdbr, const void *key, + SIZE_T keylen, const void **data, SIZE_T *datalen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbr_find, cdbr, key, keylen, data, datalen); + if (cdbr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); + if (key) + COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); + int ret = REAL(cdbr_find)(cdbr, key, keylen, data, datalen); + if (!ret) { + if (data) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, data, sizeof(*data)); + if (datalen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, datalen, sizeof(*datalen)); + if (data && datalen) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, *data, *datalen); + } + return ret; +} + +INTERCEPTOR(void, cdbr_close, struct __sanitizer_cdbr *cdbr) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbr_close, cdbr); + if (cdbr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbr, sizeof(*cdbr)); + REAL(cdbr_close)(cdbr); +} + +INTERCEPTOR(struct __sanitizer_cdbw *, cdbw_open) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbw_open); + struct __sanitizer_cdbw *ret = REAL(cdbw_open)(); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, sizeof(*ret)); + return ret; +} + +INTERCEPTOR(int, cdbw_put, struct __sanitizer_cdbw *cdbw, const void *key, + SIZE_T keylen, const void *data, SIZE_T datalen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put, cdbw, key, keylen, data, datalen); + if (cdbw) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); + if (data && datalen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen); + if (key && keylen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); + int ret = REAL(cdbw_put)(cdbw, key, keylen, data, datalen); + if (!ret && cdbw) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); + return ret; +} + +INTERCEPTOR(int, cdbw_put_data, struct __sanitizer_cdbw *cdbw, const void *data, + SIZE_T datalen, u32 *index) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_data, cdbw, data, datalen, index); + if (cdbw) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); + if (data && datalen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, data, datalen); + int ret = REAL(cdbw_put_data)(cdbw, data, datalen, index); + if (!ret) { + if (index) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, index, sizeof(*index)); + if (cdbw) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); + } + return ret; +} + +INTERCEPTOR(int, cdbw_put_key, struct __sanitizer_cdbw *cdbw, const void *key, + SIZE_T keylen, u32 index) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbw_put_key, cdbw, key, keylen, index); + if (cdbw) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); + if (key && keylen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, key, keylen); + int ret = REAL(cdbw_put_key)(cdbw, key, keylen, index); + if (!ret && cdbw) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); + return ret; +} + +INTERCEPTOR(int, cdbw_output, struct __sanitizer_cdbw *cdbw, int output, + const char descr[16], u32 (*seedgen)(void)) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbw_output, cdbw, output, descr, seedgen); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, output); + if (cdbw) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); + if (descr) + COMMON_INTERCEPTOR_READ_RANGE(ctx, descr, internal_strnlen(descr, 16)); + if (seedgen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)seedgen, sizeof(seedgen)); + int ret = REAL(cdbw_output)(cdbw, output, descr, seedgen); + if (!ret) { + if (cdbw) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, cdbw, sizeof(*cdbw)); + if (output >= 0) + COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, output); + } + return ret; +} + +INTERCEPTOR(void, cdbw_close, struct __sanitizer_cdbw *cdbw) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cdbw_close, cdbw); + if (cdbw) + COMMON_INTERCEPTOR_READ_RANGE(ctx, cdbw, sizeof(*cdbw)); + REAL(cdbw_close)(cdbw); +} + +#define INIT_CDB \ + COMMON_INTERCEPT_FUNCTION(cdbr_open); \ + COMMON_INTERCEPT_FUNCTION(cdbr_open_mem); \ + COMMON_INTERCEPT_FUNCTION(cdbr_entries); \ + COMMON_INTERCEPT_FUNCTION(cdbr_get); \ + COMMON_INTERCEPT_FUNCTION(cdbr_find); \ + COMMON_INTERCEPT_FUNCTION(cdbr_close); \ + COMMON_INTERCEPT_FUNCTION(cdbw_open); \ + COMMON_INTERCEPT_FUNCTION(cdbw_put); \ + COMMON_INTERCEPT_FUNCTION(cdbw_put_data); \ + COMMON_INTERCEPT_FUNCTION(cdbw_put_key); \ + COMMON_INTERCEPT_FUNCTION(cdbw_output); \ + COMMON_INTERCEPT_FUNCTION(cdbw_close) +#else +#define INIT_CDB +#endif + +#if SANITIZER_INTERCEPT_GETFSENT +INTERCEPTOR(void *, getfsent) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getfsent); + void *ret = REAL(getfsent)(); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); + return ret; +} + +INTERCEPTOR(void *, getfsspec, const char *spec) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getfsspec, spec); + if (spec) + COMMON_INTERCEPTOR_READ_RANGE(ctx, spec, internal_strlen(spec) + 1); + void *ret = REAL(getfsspec)(spec); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); + return ret; +} + +INTERCEPTOR(void *, getfsfile, const char *file) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getfsfile, file); + if (file) + COMMON_INTERCEPTOR_READ_RANGE(ctx, file, internal_strlen(file) + 1); + void *ret = REAL(getfsfile)(file); + if (ret) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, ret, struct_fstab_sz); + return ret; +} + +#define INIT_GETFSENT \ + COMMON_INTERCEPT_FUNCTION(getfsent); \ + COMMON_INTERCEPT_FUNCTION(getfsspec); \ + COMMON_INTERCEPT_FUNCTION(getfsfile); +#else +#define INIT_GETFSENT +#endif + +#if SANITIZER_INTERCEPT_ARC4RANDOM +INTERCEPTOR(void, arc4random_buf, void *buf, SIZE_T len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, arc4random_buf, buf, len); + REAL(arc4random_buf)(buf, len); + if (buf && len) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, len); +} + +INTERCEPTOR(void, arc4random_addrandom, u8 *dat, int datlen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, arc4random_addrandom, dat, datlen); + if (dat && datlen) + COMMON_INTERCEPTOR_READ_RANGE(ctx, dat, datlen); + REAL(arc4random_addrandom)(dat, datlen); +} + +#define INIT_ARC4RANDOM \ + COMMON_INTERCEPT_FUNCTION(arc4random_buf); \ + COMMON_INTERCEPT_FUNCTION(arc4random_addrandom); +#else +#define INIT_ARC4RANDOM +#endif + +#if SANITIZER_INTERCEPT_POPEN +INTERCEPTOR(__sanitizer_FILE *, popen, const char *command, const char *type) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, popen, command, type); + if (command) + COMMON_INTERCEPTOR_READ_RANGE(ctx, command, internal_strlen(command) + 1); + if (type) + COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1); + __sanitizer_FILE *res = REAL(popen)(command, type); + COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr); + if (res) unpoison_file(res); + return res; +} +#define INIT_POPEN COMMON_INTERCEPT_FUNCTION(popen) +#else +#define INIT_POPEN +#endif + +#if SANITIZER_INTERCEPT_POPENVE +INTERCEPTOR(__sanitizer_FILE *, popenve, const char *path, + char *const *argv, char *const *envp, const char *type) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, popenve, path, argv, envp, type); + if (path) + COMMON_INTERCEPTOR_READ_RANGE(ctx, path, internal_strlen(path) + 1); + if (argv) { + for (char *const *pa = argv; ; ++pa) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); + if (!*pa) + break; + COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1); + } + } + if (envp) { + for (char *const *pa = envp; ; ++pa) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, pa, sizeof(char **)); + if (!*pa) + break; + COMMON_INTERCEPTOR_READ_RANGE(ctx, *pa, internal_strlen(*pa) + 1); + } + } + if (type) + COMMON_INTERCEPTOR_READ_RANGE(ctx, type, internal_strlen(type) + 1); + __sanitizer_FILE *res = REAL(popenve)(path, argv, envp, type); + COMMON_INTERCEPTOR_FILE_OPEN(ctx, res, nullptr); + if (res) unpoison_file(res); + return res; +} +#define INIT_POPENVE COMMON_INTERCEPT_FUNCTION(popenve) +#else +#define INIT_POPENVE +#endif + +#if SANITIZER_INTERCEPT_PCLOSE +INTERCEPTOR(int, pclose, __sanitizer_FILE *fp) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pclose, fp); + COMMON_INTERCEPTOR_FILE_CLOSE(ctx, fp); + const FileMetadata *m = GetInterceptorMetadata(fp); + int res = REAL(pclose)(fp); + if (m) { + COMMON_INTERCEPTOR_INITIALIZE_RANGE(*m->addr, *m->size); + DeleteInterceptorMetadata(fp); + } + return res; +} +#define INIT_PCLOSE COMMON_INTERCEPT_FUNCTION(pclose); +#else +#define INIT_PCLOSE +#endif + +#if SANITIZER_INTERCEPT_FUNOPEN +typedef int (*funopen_readfn)(void *cookie, char *buf, int len); +typedef int (*funopen_writefn)(void *cookie, const char *buf, int len); +typedef OFF_T (*funopen_seekfn)(void *cookie, OFF_T offset, int whence); +typedef int (*funopen_closefn)(void *cookie); + +struct WrappedFunopenCookie { + void *real_cookie; + funopen_readfn real_read; + funopen_writefn real_write; + funopen_seekfn real_seek; + funopen_closefn real_close; +}; + +static int wrapped_funopen_read(void *cookie, char *buf, int len) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; + funopen_readfn real_read = wrapped_cookie->real_read; + return real_read(wrapped_cookie->real_cookie, buf, len); +} + +static int wrapped_funopen_write(void *cookie, const char *buf, int len) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; + funopen_writefn real_write = wrapped_cookie->real_write; + return real_write(wrapped_cookie->real_cookie, buf, len); +} + +static OFF_T wrapped_funopen_seek(void *cookie, OFF_T offset, int whence) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; + funopen_seekfn real_seek = wrapped_cookie->real_seek; + return real_seek(wrapped_cookie->real_cookie, offset, whence); +} + +static int wrapped_funopen_close(void *cookie) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + WrappedFunopenCookie *wrapped_cookie = (WrappedFunopenCookie *)cookie; + funopen_closefn real_close = wrapped_cookie->real_close; + int res = real_close(wrapped_cookie->real_cookie); + InternalFree(wrapped_cookie); + return res; +} + +INTERCEPTOR(__sanitizer_FILE *, funopen, void *cookie, funopen_readfn readfn, + funopen_writefn writefn, funopen_seekfn seekfn, + funopen_closefn closefn) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, funopen, cookie, readfn, writefn, seekfn, + closefn); + + WrappedFunopenCookie *wrapped_cookie = + (WrappedFunopenCookie *)InternalAlloc(sizeof(WrappedFunopenCookie)); + wrapped_cookie->real_cookie = cookie; + wrapped_cookie->real_read = readfn; + wrapped_cookie->real_write = writefn; + wrapped_cookie->real_seek = seekfn; + wrapped_cookie->real_close = closefn; + + __sanitizer_FILE *res = + REAL(funopen)(wrapped_cookie, + readfn ? wrapped_funopen_read : nullptr, + writefn ? wrapped_funopen_write : nullptr, + seekfn ? wrapped_funopen_seek : nullptr, + closefn ? wrapped_funopen_close : nullptr); + if (res) + unpoison_file(res); + return res; +} +#define INIT_FUNOPEN COMMON_INTERCEPT_FUNCTION(funopen) +#else +#define INIT_FUNOPEN +#endif + +#if SANITIZER_INTERCEPT_FUNOPEN2 +typedef SSIZE_T (*funopen2_readfn)(void *cookie, void *buf, SIZE_T len); +typedef SSIZE_T (*funopen2_writefn)(void *cookie, const void *buf, SIZE_T len); +typedef OFF_T (*funopen2_seekfn)(void *cookie, OFF_T offset, int whence); +typedef int (*funopen2_flushfn)(void *cookie); +typedef int (*funopen2_closefn)(void *cookie); + +struct WrappedFunopen2Cookie { + void *real_cookie; + funopen2_readfn real_read; + funopen2_writefn real_write; + funopen2_seekfn real_seek; + funopen2_flushfn real_flush; + funopen2_closefn real_close; +}; + +static SSIZE_T wrapped_funopen2_read(void *cookie, void *buf, SIZE_T len) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; + funopen2_readfn real_read = wrapped_cookie->real_read; + return real_read(wrapped_cookie->real_cookie, buf, len); +} + +static SSIZE_T wrapped_funopen2_write(void *cookie, const void *buf, + SIZE_T len) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; + funopen2_writefn real_write = wrapped_cookie->real_write; + return real_write(wrapped_cookie->real_cookie, buf, len); +} + +static OFF_T wrapped_funopen2_seek(void *cookie, OFF_T offset, int whence) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; + funopen2_seekfn real_seek = wrapped_cookie->real_seek; + return real_seek(wrapped_cookie->real_cookie, offset, whence); +} + +static int wrapped_funopen2_flush(void *cookie) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; + funopen2_flushfn real_flush = wrapped_cookie->real_flush; + return real_flush(wrapped_cookie->real_cookie); +} + +static int wrapped_funopen2_close(void *cookie) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(1); + WrappedFunopen2Cookie *wrapped_cookie = (WrappedFunopen2Cookie *)cookie; + funopen2_closefn real_close = wrapped_cookie->real_close; + int res = real_close(wrapped_cookie->real_cookie); + InternalFree(wrapped_cookie); + return res; +} + +INTERCEPTOR(__sanitizer_FILE *, funopen2, void *cookie, funopen2_readfn readfn, + funopen2_writefn writefn, funopen2_seekfn seekfn, + funopen2_flushfn flushfn, funopen2_closefn closefn) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, funopen2, cookie, readfn, writefn, seekfn, + flushfn, closefn); + + WrappedFunopen2Cookie *wrapped_cookie = + (WrappedFunopen2Cookie *)InternalAlloc(sizeof(WrappedFunopen2Cookie)); + wrapped_cookie->real_cookie = cookie; + wrapped_cookie->real_read = readfn; + wrapped_cookie->real_write = writefn; + wrapped_cookie->real_seek = seekfn; + wrapped_cookie->real_flush = flushfn; + wrapped_cookie->real_close = closefn; + + __sanitizer_FILE *res = + REAL(funopen2)(wrapped_cookie, + readfn ? wrapped_funopen2_read : nullptr, + writefn ? wrapped_funopen2_write : nullptr, + seekfn ? wrapped_funopen2_seek : nullptr, + flushfn ? wrapped_funopen2_flush : nullptr, + closefn ? wrapped_funopen2_close : nullptr); + if (res) + unpoison_file(res); + return res; +} +#define INIT_FUNOPEN2 COMMON_INTERCEPT_FUNCTION(funopen2) +#else +#define INIT_FUNOPEN2 +#endif + +#if SANITIZER_INTERCEPT_FDEVNAME +INTERCEPTOR(char *, fdevname, int fd) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fdevname, fd); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + char *name = REAL(fdevname)(fd); + if (name) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, name, internal_strlen(name) + 1); + if (fd > 0) + COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + } + return name; +} + +INTERCEPTOR(char *, fdevname_r, int fd, char *buf, SIZE_T len) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, fdevname_r, fd, buf, len); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + char *name = REAL(fdevname_r)(fd, buf, len); + if (name && buf && len > 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, internal_strlen(buf) + 1); + if (fd > 0) + COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + } + return name; +} + +#define INIT_FDEVNAME \ + COMMON_INTERCEPT_FUNCTION(fdevname); \ + COMMON_INTERCEPT_FUNCTION(fdevname_r); +#else +#define INIT_FDEVNAME +#endif + +#if SANITIZER_INTERCEPT_GETUSERSHELL +INTERCEPTOR(char *, getusershell,) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getusershell,); + char *res = REAL(getusershell)(); + if (res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} + +#define INIT_GETUSERSHELL COMMON_INTERCEPT_FUNCTION(getusershell); +#else +#define INIT_GETUSERSHELL +#endif + +#if SANITIZER_INTERCEPT_SL_INIT +INTERCEPTOR(void *, sl_init) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sl_init); + void *res = REAL(sl_init)(); + if (res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, __sanitizer::struct_StringList_sz); + return res; +} + +INTERCEPTOR(int, sl_add, void *sl, char *item) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sl_add, sl, item); + if (sl) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); + if (item) + COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1); + int res = REAL(sl_add)(sl, item); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); + return res; +} + +INTERCEPTOR(char *, sl_find, void *sl, const char *item) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sl_find, sl, item); + if (sl) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); + if (item) + COMMON_INTERCEPTOR_READ_RANGE(ctx, item, internal_strlen(item) + 1); + char *res = REAL(sl_find)(sl, item); + if (res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, res, internal_strlen(res) + 1); + return res; +} + +INTERCEPTOR(void, sl_free, void *sl, int freeall) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sl_free, sl, freeall); + if (sl) + COMMON_INTERCEPTOR_READ_RANGE(ctx, sl, __sanitizer::struct_StringList_sz); + REAL(sl_free)(sl, freeall); +} + +#define INIT_SL_INIT \ + COMMON_INTERCEPT_FUNCTION(sl_init); \ + COMMON_INTERCEPT_FUNCTION(sl_add); \ + COMMON_INTERCEPT_FUNCTION(sl_find); \ + COMMON_INTERCEPT_FUNCTION(sl_free); +#else +#define INIT_SL_INIT +#endif + +#if SANITIZER_INTERCEPT_GETRANDOM +INTERCEPTOR(SSIZE_T, getrandom, void *buf, SIZE_T buflen, unsigned int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getrandom, buf, buflen, flags); + // If GRND_NONBLOCK is set in the flags, it is non blocking. + static const int grnd_nonblock = 1; + SSIZE_T n; + if ((flags & grnd_nonblock)) + n = REAL(getrandom)(buf, buflen, flags); + else + n = COMMON_INTERCEPTOR_BLOCK_REAL(getrandom)(buf, buflen, flags); + if (n > 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, n); + } + return n; +} +#define INIT_GETRANDOM COMMON_INTERCEPT_FUNCTION(getrandom) +#else +#define INIT_GETRANDOM +#endif + +#if SANITIZER_INTERCEPT_GETENTROPY +INTERCEPTOR(int, getentropy, void *buf, SIZE_T buflen) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, getentropy, buf, buflen); + int r = REAL(getentropy)(buf, buflen); + if (r == 0) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, buflen); + } + return r; +} +#define INIT_GETENTROPY COMMON_INTERCEPT_FUNCTION(getentropy) +#else +#define INIT_GETENTROPY +#endif + +#if SANITIZER_INTERCEPT_QSORT_R +typedef int (*qsort_r_compar_f)(const void *, const void *, void *); +struct qsort_r_compar_params { + SIZE_T size; + qsort_r_compar_f compar; + void *arg; +}; +static int wrapped_qsort_r_compar(const void *a, const void *b, void *arg) { + qsort_r_compar_params *params = (qsort_r_compar_params *)arg; + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, params->size); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, params->size); + return params->compar(a, b, params->arg); +} + +INTERCEPTOR(void, qsort_r, void *base, SIZE_T nmemb, SIZE_T size, + qsort_r_compar_f compar, void *arg) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, qsort_r, base, nmemb, size, compar, arg); + // Run the comparator over all array elements to detect any memory issues. + if (nmemb > 1) { + for (SIZE_T i = 0; i < nmemb - 1; ++i) { + void *p = (void *)((char *)base + i * size); + void *q = (void *)((char *)base + (i + 1) * size); + COMMON_INTERCEPTOR_UNPOISON_PARAM(3); + compar(p, q, arg); + } + } + qsort_r_compar_params params = {size, compar, arg}; + REAL(qsort_r)(base, nmemb, size, wrapped_qsort_r_compar, ¶ms); + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size); +} +# define INIT_QSORT_R COMMON_INTERCEPT_FUNCTION(qsort_r) +#else +# define INIT_QSORT_R +#endif + +#if SANITIZER_INTERCEPT_QSORT && SANITIZER_INTERCEPT_QSORT_R +INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size, + qsort_r_compar_f compar) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar); + WRAP(qsort_r)(base, nmemb, size, compar, nullptr); +} +# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort) +#elif SANITIZER_INTERCEPT_QSORT && !SANITIZER_INTERCEPT_QSORT_R +// Glibc qsort uses a temporary buffer allocated either on stack or on heap. +// Poisoned memory from there may get copied into the comparator arguments, +// where it needs to be dealt with. But even that is not enough - the results of +// the sort may be copied into the input/output array based on the results of +// the comparator calls, but directly from the temp memory, bypassing the +// unpoisoning done in wrapped_qsort_compar. We deal with this by, again, +// unpoisoning the entire array after the sort is done. +// +// We can not check that the entire array is initialized at the beginning. IMHO, +// it's fine for parts of the sorted objects to contain uninitialized memory, +// ex. as padding in structs. +typedef int (*qsort_compar_f)(const void *, const void *); +static THREADLOCAL qsort_compar_f qsort_compar; +static THREADLOCAL SIZE_T qsort_size; +static int wrapped_qsort_compar(const void *a, const void *b) { + COMMON_INTERCEPTOR_UNPOISON_PARAM(2); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(a, qsort_size); + COMMON_INTERCEPTOR_INITIALIZE_RANGE(b, qsort_size); + return qsort_compar(a, b); +} + +INTERCEPTOR(void, qsort, void *base, SIZE_T nmemb, SIZE_T size, + qsort_compar_f compar) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, qsort, base, nmemb, size, compar); + // Run the comparator over all array elements to detect any memory issues. + if (nmemb > 1) { + for (SIZE_T i = 0; i < nmemb - 1; ++i) { + void *p = (void *)((char *)base + i * size); + void *q = (void *)((char *)base + (i + 1) * size); + COMMON_INTERCEPTOR_UNPOISON_PARAM(2); + compar(p, q); + } + } + qsort_compar_f old_compar = qsort_compar; + SIZE_T old_size = qsort_size; + // Handle qsort() implementations that recurse using an + // interposable function call: + bool already_wrapped = compar == wrapped_qsort_compar; + if (already_wrapped) { + // This case should only happen if the qsort() implementation calls itself + // using a preemptible function call (e.g. the FreeBSD libc version). + // Check that the size and comparator arguments are as expected. + CHECK_NE(compar, qsort_compar); + CHECK_EQ(qsort_size, size); + } else { + qsort_compar = compar; + qsort_size = size; + } + REAL(qsort)(base, nmemb, size, wrapped_qsort_compar); + if (!already_wrapped) { + qsort_compar = old_compar; + qsort_size = old_size; + } + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, base, nmemb * size); +} +# define INIT_QSORT COMMON_INTERCEPT_FUNCTION(qsort) +#else +# define INIT_QSORT +#endif + +#if SANITIZER_INTERCEPT_BSEARCH +typedef int (*bsearch_compar_f)(const void *, const void *); +struct bsearch_compar_params { + const void *key; + bsearch_compar_f compar; +}; + +static int wrapped_bsearch_compar(const void *key, const void *b) { + const bsearch_compar_params *params = (const bsearch_compar_params *)key; + COMMON_INTERCEPTOR_UNPOISON_PARAM(2); + return params->compar(params->key, b); +} + +INTERCEPTOR(void *, bsearch, const void *key, const void *base, SIZE_T nmemb, + SIZE_T size, bsearch_compar_f compar) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, bsearch, key, base, nmemb, size, compar); + bsearch_compar_params params = {key, compar}; + return REAL(bsearch)(¶ms, base, nmemb, size, wrapped_bsearch_compar); +} +# define INIT_BSEARCH COMMON_INTERCEPT_FUNCTION(bsearch) +#else +# define INIT_BSEARCH +#endif + +#if SANITIZER_INTERCEPT_SIGALTSTACK +INTERCEPTOR(int, sigaltstack, void *ss, void *oss) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, sigaltstack, ss, oss); + int r = REAL(sigaltstack)(ss, oss); + if (r == 0 && oss != nullptr) { + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, oss, struct_stack_t_sz); + } + return r; +} +#define INIT_SIGALTSTACK COMMON_INTERCEPT_FUNCTION(sigaltstack) +#else +#define INIT_SIGALTSTACK +#endif + +#if SANITIZER_INTERCEPT_PROCCTL +INTERCEPTOR(int, procctl, int idtype, u64 id, int cmd, uptr data) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, procctl, idtype, id, cmd, data); + static const int PROC_REAP_ACQUIRE = 2; + static const int PROC_REAP_RELEASE = 3; + static const int PROC_REAP_STATUS = 4; + static const int PROC_REAP_GETPIDS = 5; + static const int PROC_REAP_KILL = 6; + if (cmd < PROC_REAP_ACQUIRE || cmd > PROC_REAP_KILL) { + COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, sizeof(int)); + } else { + // reap_acquire/reap_release bears no arguments. + if (cmd > PROC_REAP_RELEASE) { + unsigned int reapsz; + switch (cmd) { + case PROC_REAP_STATUS: + reapsz = struct_procctl_reaper_status_sz; + break; + case PROC_REAP_GETPIDS: + reapsz = struct_procctl_reaper_pids_sz; + break; + case PROC_REAP_KILL: + reapsz = struct_procctl_reaper_kill_sz; + break; + } + COMMON_INTERCEPTOR_READ_RANGE(ctx, (void *)data, reapsz); + } + } + return REAL(procctl)(idtype, id, cmd, data); +} +#define INIT_PROCCTL COMMON_INTERCEPT_FUNCTION(procctl) +#else +#define INIT_PROCCTL +#endif + +#if SANITIZER_INTERCEPT_UNAME +INTERCEPTOR(int, uname, struct utsname *utsname) { +#if SANITIZER_LINUX + if (COMMON_INTERCEPTOR_NOTHING_IS_INITIALIZED) + return internal_uname(utsname); +#endif + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, uname, utsname); + int res = REAL(uname)(utsname); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname, + __sanitizer::struct_utsname_sz); + return res; +} +#define INIT_UNAME COMMON_INTERCEPT_FUNCTION(uname) +#else +#define INIT_UNAME +#endif + +#if SANITIZER_INTERCEPT___XUNAME +// FreeBSD's <sys/utsname.h> define uname() as +// static __inline int uname(struct utsname *name) { +// return __xuname(SYS_NMLN, (void*)name); +// } +INTERCEPTOR(int, __xuname, int size, void *utsname) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, __xuname, size, utsname); + int res = REAL(__xuname)(size, utsname); + if (!res) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, utsname, + __sanitizer::struct_utsname_sz); + return res; +} +#define INIT___XUNAME COMMON_INTERCEPT_FUNCTION(__xuname) +#else +#define INIT___XUNAME +#endif + +#if SANITIZER_INTERCEPT_ARGP_PARSE +INTERCEPTOR(int, argp_parse, const struct argp *argp, int argc, char **argv, + unsigned flags, int *arg_index, void *input) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, argp_parse, argp, argc, argv, flags, arg_index, + input); + for (int i = 0; i < argc; i++) + COMMON_INTERCEPTOR_READ_RANGE(ctx, argv[i], internal_strlen(argv[i]) + 1); + int res = REAL(argp_parse)(argp, argc, argv, flags, arg_index, input); + if (!res && arg_index) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, arg_index, sizeof(int)); + return res; +} + +#define INIT_ARGP_PARSE COMMON_INTERCEPT_FUNCTION(argp_parse); +#else +#define INIT_ARGP_PARSE +#endif + +#if SANITIZER_INTERCEPT_CPUSET_GETAFFINITY +INTERCEPTOR(int, cpuset_getaffinity, int level, int which, __int64_t id, SIZE_T cpusetsize, __sanitizer_cpuset_t *mask) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, cpuset_getaffinity, level, which, id, cpusetsize, mask); + int res = REAL(cpuset_getaffinity)(level, which, id, cpusetsize, mask); + if (mask && !res) COMMON_INTERCEPTOR_WRITE_RANGE(ctx, mask, cpusetsize); + return res; +} +#define INIT_CPUSET_GETAFFINITY COMMON_INTERCEPT_FUNCTION(cpuset_getaffinity); +#else +#define INIT_CPUSET_GETAFFINITY +#endif + +#if SANITIZER_INTERCEPT_PREADV2 +INTERCEPTOR(SSIZE_T, preadv2, int fd, __sanitizer_iovec *iov, int iovcnt, + OFF_T offset, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, preadv2, fd, iov, iovcnt, offset, flags); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + SSIZE_T res = REAL(preadv2)(fd, iov, iovcnt, offset, flags); + if (res > 0) write_iovec(ctx, iov, iovcnt, res); + if (res >= 0 && fd >= 0) COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +#define INIT_PREADV2 COMMON_INTERCEPT_FUNCTION(preadv2) +#else +#define INIT_PREADV2 +#endif + +#if SANITIZER_INTERCEPT_PWRITEV2 +INTERCEPTOR(SSIZE_T, pwritev2, int fd, __sanitizer_iovec *iov, int iovcnt, + OFF_T offset, int flags) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, pwritev2, fd, iov, iovcnt, offset, flags); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + if (fd >= 0) COMMON_INTERCEPTOR_FD_RELEASE(ctx, fd); + SSIZE_T res = REAL(pwritev2)(fd, iov, iovcnt, offset, flags); + if (res > 0) read_iovec(ctx, iov, iovcnt, res); + return res; +} +#define INIT_PWRITEV2 COMMON_INTERCEPT_FUNCTION(pwritev2) +#else +#define INIT_PWRITEV2 +#endif + +#if SANITIZER_INTERCEPT_FREADLINK +INTERCEPTOR(SSIZE_T, freadlink, int fd, char *buf, SIZE_T bufsiz) { + void *ctx; + COMMON_INTERCEPTOR_ENTER(ctx, freadlink, fd, buf, bufsiz); + COMMON_INTERCEPTOR_FD_ACCESS(ctx, fd); + SSIZE_T res = REAL(freadlink)(fd, buf, bufsiz); + if (res > 0) + COMMON_INTERCEPTOR_WRITE_RANGE(ctx, buf, res); + if (res >= 0 && fd > 0) + COMMON_INTERCEPTOR_FD_ACQUIRE(ctx, fd); + return res; +} +# define INIT_FREADLINK COMMON_INTERCEPT_FUNCTION(freadlink) +#else +# define INIT_FREADLINK +#endif + +#include "sanitizer_common_interceptors_netbsd_compat.inc" + +namespace __sanitizer { +void InitializeMemintrinsicInterceptors(); +} // namespace __sanitizer + +static void InitializeCommonInterceptors() { +#if SI_POSIX + static u64 metadata_mem[sizeof(MetadataHashMap) / sizeof(u64) + 1]; + interceptor_metadata_map = new ((void *)&metadata_mem) MetadataHashMap(); +#endif + + __sanitizer::InitializeMemintrinsicInterceptors(); + + INIT_MMAP; + INIT_MMAP64; + INIT_TEXTDOMAIN; + INIT_STRLEN; + INIT_STRNLEN; + INIT_STRNDUP; + INIT___STRNDUP; + INIT_STRCMP; + INIT_STRNCMP; + INIT_STRCASECMP; + INIT_STRNCASECMP; + INIT_STRSTR; + INIT_STRCASESTR; + INIT_STRCHR; + INIT_STRCHRNUL; + INIT_STRRCHR; + INIT_STRSPN; + INIT_STRTOK; + INIT_STRPBRK; + INIT_STRXFRM; + INIT___STRXFRM_L; + INIT_MEMCHR; + INIT_MEMCMP; + INIT_BCMP; + INIT_MEMRCHR; + INIT_MEMMEM; + INIT_READ; + INIT_FREAD; + INIT_PREAD; + INIT_PREAD64; + INIT_READV; + INIT_PREADV; + INIT_PREADV64; + INIT_WRITE; + INIT_FWRITE; + INIT_PWRITE; + INIT_PWRITE64; + INIT_WRITEV; + INIT_PWRITEV; + INIT_PWRITEV64; + INIT_FGETS; + INIT_FPUTS; + INIT_PUTS; + INIT_PRCTL; + INIT_LOCALTIME_AND_FRIENDS; + INIT_STRPTIME; + INIT_SCANF; + INIT_ISOC99_SCANF; + INIT_PRINTF; + INIT_PRINTF_L; + INIT_ISOC99_PRINTF; + INIT_FREXP; + INIT_FREXPF_FREXPL; + INIT_GETPWNAM_AND_FRIENDS; + INIT_GETPWNAM_R_AND_FRIENDS; + INIT_GETPWENT; + INIT_FGETPWENT; + INIT_GETPWENT_R; + INIT_FGETPWENT_R; + INIT_FGETGRENT_R; + INIT_SETPWENT; + INIT_CLOCK_GETTIME; + INIT_CLOCK_GETCPUCLOCKID; + INIT_TIMER_CREATE; + INIT_GETITIMER; + INIT_TIME; + INIT_TIMESPEC_GET; + INIT_GLOB; + INIT_GLOB64; + INIT___B64_TO; + INIT_DN_COMP_EXPAND; + INIT_POSIX_SPAWN; + INIT_WAIT; + INIT_WAIT4; + INIT_INET; + INIT_PTHREAD_GETSCHEDPARAM; + INIT_GETADDRINFO; + INIT_GETNAMEINFO; + INIT_GETSOCKNAME; + INIT_GETHOSTBYNAME; + INIT_GETHOSTBYNAME2; + INIT_GETHOSTBYNAME_R; + INIT_GETHOSTBYNAME2_R; + INIT_GETHOSTBYADDR_R; + INIT_GETHOSTENT_R; + INIT_GETSOCKOPT; + INIT_ACCEPT; + INIT_ACCEPT4; + INIT_PACCEPT; + INIT_MODF; + INIT_RECVMSG; + INIT_SENDMSG; + INIT_RECVMMSG; + INIT_SENDMMSG; + INIT_SYSMSG; + INIT_GETPEERNAME; + INIT_IOCTL; + INIT_INET_ATON; + INIT_SYSINFO; + INIT_READDIR; + INIT_READDIR64; + INIT_PTRACE; + INIT_SETLOCALE; + INIT_GETCWD; + INIT_GET_CURRENT_DIR_NAME; + INIT_STRTOIMAX; + INIT_STRTOIMAX_C23; + INIT_MBSTOWCS; + INIT_MBSNRTOWCS; + INIT_WCSTOMBS; + INIT_WCSNRTOMBS; + INIT_WCRTOMB; + INIT_WCTOMB; + INIT_TCGETATTR; + INIT_REALPATH; + INIT_CANONICALIZE_FILE_NAME; + INIT_CONFSTR; + INIT_SCHED_GETAFFINITY; + INIT_SCHED_GETPARAM; + INIT_STRERROR; + INIT_STRERROR_R; + INIT_XPG_STRERROR_R; + INIT_SCANDIR; + INIT_SCANDIR64; + INIT_GETGROUPS; + INIT_POLL; + INIT_PPOLL; + INIT_WORDEXP; + INIT_SIGWAIT; + INIT_SIGWAITINFO; + INIT_SIGTIMEDWAIT; + INIT_SIGSETOPS; + INIT_SIGSET_LOGICOPS; + INIT_SIGPENDING; + INIT_SIGPROCMASK; + INIT_PTHREAD_SIGMASK; + INIT_BACKTRACE; + INIT__EXIT; + INIT___LIBC_THR_SETCANCELSTATE; + INIT_GETMNTENT; + INIT_GETMNTENT_R; + INIT_STATFS; + INIT_STATFS64; + INIT_STATVFS; + INIT_STATVFS64; + INIT_INITGROUPS; + INIT_ETHER_NTOA_ATON; + INIT_ETHER_HOST; + INIT_ETHER_R; + INIT_SHMCTL; + INIT_RANDOM_R; + INIT_PTHREAD_ATTR_GET; + INIT_PTHREAD_ATTR_GET_SCHED; + INIT_PTHREAD_ATTR_GETINHERITSCHED; + INIT_PTHREAD_ATTR_GETAFFINITY_NP; + INIT_PTHREAD_GETAFFINITY_NP; + INIT_PTHREAD_MUTEXATTR_GETPSHARED; + INIT_PTHREAD_MUTEXATTR_GETTYPE; + INIT_PTHREAD_MUTEXATTR_GETPROTOCOL; + INIT_PTHREAD_MUTEXATTR_GETPRIOCEILING; + INIT_PTHREAD_MUTEXATTR_GETROBUST; + INIT_PTHREAD_MUTEXATTR_GETROBUST_NP; + INIT_PTHREAD_RWLOCKATTR_GETPSHARED; + INIT_PTHREAD_RWLOCKATTR_GETKIND_NP; + INIT_PTHREAD_CONDATTR_GETPSHARED; + INIT_PTHREAD_CONDATTR_GETCLOCK; + INIT_PTHREAD_BARRIERATTR_GETPSHARED; + INIT_TMPNAM; + INIT_TMPNAM_R; + INIT_PTSNAME; + INIT_PTSNAME_R; + INIT_TTYNAME; + INIT_TTYNAME_R; + INIT_TEMPNAM; + INIT_PTHREAD_SETNAME_NP; + INIT_PTHREAD_GETNAME_NP; + INIT_SINCOS; + INIT_REMQUO; + INIT_REMQUOL; + INIT_LGAMMA; + INIT_LGAMMAL; + INIT_LGAMMA_R; + INIT_LGAMMAL_R; + INIT_DRAND48_R; + INIT_RAND_R; + INIT_GETLINE; + INIT_ICONV; + INIT_TIMES; + INIT_TLS_GET_ADDR; + INIT_LISTXATTR; + INIT_GETXATTR; + INIT_GETRESID; + INIT_GETIFADDRS; + INIT_IF_INDEXTONAME; + INIT_CAPGET; + INIT_FTIME; + INIT_XDR; + INIT_XDRREC_LINUX; + INIT_TSEARCH; + INIT_LIBIO_INTERNALS; + INIT_FOPEN; + INIT_FOPEN64; + INIT_FLOPEN; + INIT_OPEN_MEMSTREAM; + INIT_OBSTACK; + INIT_FFLUSH; + INIT_FCLOSE; + INIT_DLOPEN_DLCLOSE; + INIT_GETPASS; + INIT_TIMERFD; + INIT_MLOCKX; + INIT_FOPENCOOKIE; + INIT_SEM; + INIT_PTHREAD_SETCANCEL; + INIT_MINCORE; + INIT_PROCESS_VM_READV; + INIT_CTERMID; + INIT_CTERMID_R; + INIT_RECV_RECVFROM; + INIT_SEND_SENDTO; + INIT_STAT; + INIT_STAT64; + INIT_EVENTFD_READ_WRITE; + INIT_LSTAT; + INIT_LSTAT64; + INIT___XSTAT; + INIT___XSTAT64; + INIT___LXSTAT; + INIT___LXSTAT64; + // FIXME: add other *stat interceptors. + INIT_UTMP; + INIT_UTMPX; + INIT_GETLOADAVG; + INIT_WCSLEN; + INIT_WCSCAT; + INIT_WCSDUP; + INIT_WCSXFRM; + INIT___WCSXFRM_L; + INIT_ACCT; + INIT_USER_FROM_UID; + INIT_UID_FROM_USER; + INIT_GROUP_FROM_GID; + INIT_GID_FROM_GROUP; + INIT_ACCESS; + INIT_FACCESSAT; + INIT_GETGROUPLIST; + INIT_GETGROUPMEMBERSHIP; + INIT_READLINK; + INIT_READLINKAT; + INIT_NAME_TO_HANDLE_AT; + INIT_OPEN_BY_HANDLE_AT; + INIT_STRLCPY; + INIT_DEVNAME; + INIT_DEVNAME_R; + INIT_FGETLN; + INIT_STRMODE; + INIT_TTYENT; + INIT_PROTOENT; + INIT_PROTOENT_R; + INIT_NETENT; + INIT_GETMNTINFO; + INIT_MI_VECTOR_HASH; + INIT_SETVBUF; + INIT_GETVFSSTAT; + INIT_REGEX; + INIT_REGEXSUB; + INIT_FTS; + INIT_SYSCTL; + INIT_ASYSCTL; + INIT_SYSCTLGETMIBINFO; + INIT_NL_LANGINFO; + INIT_MODCTL; + INIT_STRTONUM; + INIT_FPARSELN; + INIT_STATVFS1; + INIT_STRTOI; + INIT_CAPSICUM; + INIT_SHA1; + INIT_MD4; + INIT_RMD160; + INIT_FSEEK; + INIT_MD2; + INIT_VIS; + INIT_CDB; + INIT_GETFSENT; + INIT_ARC4RANDOM; + INIT_POPEN; + INIT_POPENVE; + INIT_PCLOSE; + INIT_FUNOPEN; + INIT_FUNOPEN2; + INIT_FDEVNAME; + INIT_GETUSERSHELL; + INIT_SL_INIT; + INIT_GETRANDOM; + INIT_GETENTROPY; + INIT_QSORT; + INIT_QSORT_R; + INIT_BSEARCH; + INIT_SIGALTSTACK; + INIT_PROCCTL + INIT_UNAME; + INIT___XUNAME; + INIT_ARGP_PARSE; + INIT_CPUSET_GETAFFINITY; + INIT_PREADV2; + INIT_PWRITEV2; + INIT_FREADLINK; + + INIT___PRINTF_CHK; +} |