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Diffstat (limited to 'lib/libtsan/sanitizer_common/sanitizer_posix.h')
| -rw-r--r-- | lib/libtsan/sanitizer_common/sanitizer_posix.h | 135 |
1 files changed, 135 insertions, 0 deletions
diff --git a/lib/libtsan/sanitizer_common/sanitizer_posix.h b/lib/libtsan/sanitizer_common/sanitizer_posix.h new file mode 100644 index 0000000000..b5491c540d --- /dev/null +++ b/lib/libtsan/sanitizer_common/sanitizer_posix.h @@ -0,0 +1,135 @@ +//===-- sanitizer_posix.h -------------------------------------------------===// +// +// 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 +// +//===----------------------------------------------------------------------===// +// +// This file is shared between AddressSanitizer and ThreadSanitizer +// run-time libraries and declares some useful POSIX-specific functions. +//===----------------------------------------------------------------------===// +#ifndef SANITIZER_POSIX_H +#define SANITIZER_POSIX_H + +// ----------- ATTENTION ------------- +// This header should NOT include any other headers from sanitizer runtime. +#include "sanitizer_internal_defs.h" +#include "sanitizer_platform_limits_freebsd.h" +#include "sanitizer_platform_limits_netbsd.h" +#include "sanitizer_platform_limits_posix.h" +#include "sanitizer_platform_limits_solaris.h" + +#if SANITIZER_POSIX + +namespace __sanitizer { + +// I/O +// Don't use directly, use __sanitizer::OpenFile() instead. +uptr internal_open(const char *filename, int flags); +uptr internal_open(const char *filename, int flags, u32 mode); +# if SANITIZER_FREEBSD +uptr internal_close_range(fd_t lowfd, fd_t highfd, int flags); +# endif +uptr internal_close(fd_t fd); + +uptr internal_read(fd_t fd, void *buf, uptr count); +uptr internal_write(fd_t fd, const void *buf, uptr count); + +// Memory +uptr internal_mmap(void *addr, uptr length, int prot, int flags, + int fd, u64 offset); +uptr internal_munmap(void *addr, uptr length); +#if SANITIZER_LINUX +uptr internal_mremap(void *old_address, uptr old_size, uptr new_size, int flags, + void *new_address); +#endif +int internal_mprotect(void *addr, uptr length, int prot); +int internal_madvise(uptr addr, uptr length, int advice); + +// OS +uptr internal_filesize(fd_t fd); // -1 on error. +uptr internal_stat(const char *path, void *buf); +uptr internal_lstat(const char *path, void *buf); +uptr internal_fstat(fd_t fd, void *buf); +uptr internal_dup(int oldfd); +uptr internal_dup2(int oldfd, int newfd); +uptr internal_readlink(const char *path, char *buf, uptr bufsize); +uptr internal_unlink(const char *path); +uptr internal_rename(const char *oldpath, const char *newpath); +uptr internal_lseek(fd_t fd, OFF_T offset, int whence); + +#if SANITIZER_NETBSD +uptr internal_ptrace(int request, int pid, void *addr, int data); +#else +uptr internal_ptrace(int request, int pid, void *addr, void *data); +#endif +uptr internal_waitpid(int pid, int *status, int options); + +int internal_fork(); +fd_t internal_spawn(const char *argv[], const char *envp[], pid_t *pid); + +int internal_sysctl(const int *name, unsigned int namelen, void *oldp, + uptr *oldlenp, const void *newp, uptr newlen); +int internal_sysctlbyname(const char *sname, void *oldp, uptr *oldlenp, + const void *newp, uptr newlen); + +// These functions call appropriate pthread_ functions directly, bypassing +// the interceptor. They are weak and may not be present in some tools. +SANITIZER_WEAK_ATTRIBUTE +int internal_pthread_create(void *th, void *attr, void *(*callback)(void *), + void *param); +SANITIZER_WEAK_ATTRIBUTE +int internal_pthread_join(void *th, void **ret); + +# define DEFINE_INTERNAL_PTHREAD_FUNCTIONS \ + namespace __sanitizer { \ + int internal_pthread_create(void *th, void *attr, \ + void *(*callback)(void *), void *param) { \ + return REAL(pthread_create)(th, attr, callback, param); \ + } \ + int internal_pthread_join(void *th, void **ret) { \ + return REAL(pthread_join)(th, ret); \ + } \ + } // namespace __sanitizer + +int internal_pthread_attr_getstack(void *attr, void **addr, uptr *size); + +// A routine named real_sigaction() must be implemented by each sanitizer in +// order for internal_sigaction() to bypass interceptors. +int internal_sigaction(int signum, const void *act, void *oldact); +void internal_sigfillset(__sanitizer_sigset_t *set); +void internal_sigemptyset(__sanitizer_sigset_t *set); +bool internal_sigismember(__sanitizer_sigset_t *set, int signum); + +uptr internal_execve(const char *filename, char *const argv[], + char *const envp[]); + +bool IsStateDetached(int state); + +// Move the fd out of {0, 1, 2} range. +fd_t ReserveStandardFds(fd_t fd); + +bool ShouldMockFailureToOpen(const char *path); +bool OpenReadsVaArgs(int oflag); + +// Create a non-file mapping with a given /proc/self/maps name. +uptr MmapNamed(void *addr, uptr length, int prot, int flags, const char *name); + +// Platforms should implement at most one of these. +// 1. Provide a pre-decorated file descriptor to use instead of an anonymous +// mapping. +int GetNamedMappingFd(const char *name, uptr size, int *flags); +// 2. Add name to an existing anonymous mapping. The caller must keep *name +// alive at least as long as the mapping exists. +void DecorateMapping(uptr addr, uptr size, const char *name); + +# if !SANITIZER_FREEBSD +# define __sanitizer_dirsiz(dp) ((dp)->d_reclen) +# endif + +} // namespace __sanitizer + +#endif // SANITIZER_POSIX + +#endif // SANITIZER_POSIX_H |