1//===-- sanitizer_platform_limits_linux.cc --------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9// 10// This file is a part of Sanitizer common code. 11// 12// Sizes and layouts of linux kernel data structures. 13//===----------------------------------------------------------------------===// 14 15// This is a separate compilation unit for linux headers that conflict with 16// userspace headers. 17// Most "normal" includes go in sanitizer_platform_limits_posix.cc 18 19#include "sanitizer_platform.h" 20#if SANITIZER_LINUX 21 22#include "sanitizer_internal_defs.h" 23#include "sanitizer_platform_limits_posix.h" 24 25// For offsetof -> __builtin_offsetof definition. 26#include <stddef.h> 27 28// With old kernels (and even new kernels on powerpc) asm/stat.h uses types that 29// are not defined anywhere in userspace headers. Fake them. This seems to work 30// fine with newer headers, too. 31#include <asm/posix_types.h> 32#if defined(__x86_64__) || defined(__mips__) 33#include <sys/stat.h> 34#else 35#define ino_t __kernel_ino_t 36#define mode_t __kernel_mode_t 37#define nlink_t __kernel_nlink_t 38#define uid_t __kernel_uid_t 39#define gid_t __kernel_gid_t 40#define off_t __kernel_off_t 41// This header seems to contain the definitions of _kernel_ stat* structs. 42#include <asm/stat.h> 43#undef ino_t 44#undef mode_t 45#undef nlink_t 46#undef uid_t 47#undef gid_t 48#undef off_t 49#endif 50 51#include <linux/aio_abi.h> 52 53#if !SANITIZER_ANDROID 54#include <sys/statfs.h> 55#include <linux/perf_event.h> 56#endif 57 58namespace __sanitizer { 59#if !SANITIZER_ANDROID 60 unsigned struct_statfs64_sz = sizeof(struct statfs64); 61#endif 62} // namespace __sanitizer 63 64#if !defined(__powerpc64__) && !defined(__x86_64__) && !defined(__aarch64__)\ 65 && !defined(__mips__) 66COMPILER_CHECK(struct___old_kernel_stat_sz == sizeof(struct __old_kernel_stat)); 67#endif 68 69COMPILER_CHECK(struct_kernel_stat_sz == sizeof(struct stat)); 70 71#if defined(__i386__) 72COMPILER_CHECK(struct_kernel_stat64_sz == sizeof(struct stat64)); 73#endif 74 75CHECK_TYPE_SIZE(io_event); 76CHECK_SIZE_AND_OFFSET(io_event, data); 77CHECK_SIZE_AND_OFFSET(io_event, obj); 78CHECK_SIZE_AND_OFFSET(io_event, res); 79CHECK_SIZE_AND_OFFSET(io_event, res2); 80 81#if !SANITIZER_ANDROID 82COMPILER_CHECK(sizeof(struct __sanitizer_perf_event_attr) <= 83 sizeof(struct perf_event_attr)); 84CHECK_SIZE_AND_OFFSET(perf_event_attr, type); 85CHECK_SIZE_AND_OFFSET(perf_event_attr, size); 86#endif 87 88COMPILER_CHECK(iocb_cmd_pread == IOCB_CMD_PREAD); 89COMPILER_CHECK(iocb_cmd_pwrite == IOCB_CMD_PWRITE); 90#if !SANITIZER_ANDROID 91COMPILER_CHECK(iocb_cmd_preadv == IOCB_CMD_PREADV); 92COMPILER_CHECK(iocb_cmd_pwritev == IOCB_CMD_PWRITEV); 93#endif 94 95CHECK_TYPE_SIZE(iocb); 96CHECK_SIZE_AND_OFFSET(iocb, aio_data); 97// Skip aio_key, it's weird. 98CHECK_SIZE_AND_OFFSET(iocb, aio_lio_opcode); 99CHECK_SIZE_AND_OFFSET(iocb, aio_reqprio); 100CHECK_SIZE_AND_OFFSET(iocb, aio_fildes); 101CHECK_SIZE_AND_OFFSET(iocb, aio_buf); 102CHECK_SIZE_AND_OFFSET(iocb, aio_nbytes); 103CHECK_SIZE_AND_OFFSET(iocb, aio_offset); 104 105#endif // SANITIZER_LINUX 106