diff options
Diffstat (limited to 'lib/libtsan/sanitizer_common/sanitizer_platform_limits_linux.cpp')
| -rw-r--r-- | lib/libtsan/sanitizer_common/sanitizer_platform_limits_linux.cpp | 103 |
1 files changed, 103 insertions, 0 deletions
diff --git a/lib/libtsan/sanitizer_common/sanitizer_platform_limits_linux.cpp b/lib/libtsan/sanitizer_common/sanitizer_platform_limits_linux.cpp new file mode 100644 index 0000000000..bf0f355847 --- /dev/null +++ b/lib/libtsan/sanitizer_common/sanitizer_platform_limits_linux.cpp @@ -0,0 +1,103 @@ +//===-- sanitizer_platform_limits_linux.cpp -------------------------------===// +// +// 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 a part of Sanitizer common code. +// +// Sizes and layouts of linux kernel data structures. +//===----------------------------------------------------------------------===// + +// This is a separate compilation unit for linux headers that conflict with +// userspace headers. +// Most "normal" includes go in sanitizer_platform_limits_posix.cpp + +#include "sanitizer_platform.h" +#if SANITIZER_LINUX + +#include "sanitizer_internal_defs.h" +#include "sanitizer_platform_limits_posix.h" + +// For offsetof -> __builtin_offsetof definition. +#include <stddef.h> + +// With old kernels (and even new kernels on powerpc) asm/stat.h uses types that +// are not defined anywhere in userspace headers. Fake them. This seems to work +// fine with newer headers, too. +#include <linux/posix_types.h> +# if defined(__x86_64__) || defined(__mips__) || defined(__hexagon__) +# include <sys/stat.h> +# else +# define ino_t __kernel_ino_t +# define mode_t __kernel_mode_t +# define nlink_t __kernel_nlink_t +# define uid_t __kernel_uid_t +# define gid_t __kernel_gid_t +# define off_t __kernel_off_t +# define time_t __kernel_time_t +// This header seems to contain the definitions of _kernel_ stat* structs. +# include <asm/stat.h> +# undef ino_t +# undef mode_t +# undef nlink_t +# undef uid_t +# undef gid_t +# undef off_t +# endif + +# include <linux/aio_abi.h> + +# if !SANITIZER_ANDROID +# include <sys/statfs.h> +# include <linux/perf_event.h> +# endif + +using namespace __sanitizer; + +# if !defined(__powerpc64__) && !defined(__x86_64__) && \ + !defined(__aarch64__) && !defined(__mips__) && !defined(__s390__) && \ + !defined(__sparc__) && !defined(__riscv) && !defined(__hexagon__) && \ + !defined(__loongarch__) +COMPILER_CHECK(struct___old_kernel_stat_sz == sizeof(struct __old_kernel_stat)); +#endif + +COMPILER_CHECK(struct_kernel_stat_sz == sizeof(struct stat)); + +#if defined(__i386__) +COMPILER_CHECK(struct_kernel_stat64_sz == sizeof(struct stat64)); +#endif + +CHECK_TYPE_SIZE(io_event); +CHECK_SIZE_AND_OFFSET(io_event, data); +CHECK_SIZE_AND_OFFSET(io_event, obj); +CHECK_SIZE_AND_OFFSET(io_event, res); +CHECK_SIZE_AND_OFFSET(io_event, res2); + +#if !SANITIZER_ANDROID +COMPILER_CHECK(sizeof(struct __sanitizer_perf_event_attr) <= + sizeof(struct perf_event_attr)); +CHECK_SIZE_AND_OFFSET(perf_event_attr, type); +CHECK_SIZE_AND_OFFSET(perf_event_attr, size); +#endif + +COMPILER_CHECK(iocb_cmd_pread == IOCB_CMD_PREAD); +COMPILER_CHECK(iocb_cmd_pwrite == IOCB_CMD_PWRITE); +#if !SANITIZER_ANDROID +COMPILER_CHECK(iocb_cmd_preadv == IOCB_CMD_PREADV); +COMPILER_CHECK(iocb_cmd_pwritev == IOCB_CMD_PWRITEV); +#endif + +CHECK_TYPE_SIZE(iocb); +CHECK_SIZE_AND_OFFSET(iocb, aio_data); +// Skip aio_key, it's weird. +CHECK_SIZE_AND_OFFSET(iocb, aio_lio_opcode); +CHECK_SIZE_AND_OFFSET(iocb, aio_reqprio); +CHECK_SIZE_AND_OFFSET(iocb, aio_fildes); +CHECK_SIZE_AND_OFFSET(iocb, aio_buf); +CHECK_SIZE_AND_OFFSET(iocb, aio_nbytes); +CHECK_SIZE_AND_OFFSET(iocb, aio_offset); + +#endif // SANITIZER_LINUX |