1 //===-- sanitizer_platform_limits_linux.cc --------------------------------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This file is a part of Sanitizer common code.
12 // Sizes and layouts of linux kernel data structures.
13 //===----------------------------------------------------------------------===//
15 // This is a separate compilation unit for linux headers that conflict with
17 // Most "normal" includes go in sanitizer_platform_limits_posix.cc
19 #include "sanitizer_platform.h"
22 #include "sanitizer_internal_defs.h"
23 #include "sanitizer_platform_limits_posix.h"
25 // For offsetof -> __builtin_offsetof definition.
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 <linux/posix_types.h>
32 #if defined(__x86_64__) || defined(__mips__)
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 #define time_t __kernel_time_t
42 // This header seems to contain the definitions of _kernel_ stat* structs.
52 #include <linux/aio_abi.h>
54 #if !SANITIZER_ANDROID
55 #include <sys/statfs.h>
56 #include <linux/perf_event.h>
59 using namespace __sanitizer;
61 namespace __sanitizer {
62 #if !SANITIZER_ANDROID
63 unsigned struct_statfs64_sz = sizeof(struct statfs64);
65 } // namespace __sanitizer
67 #if !defined(__powerpc64__) && !defined(__x86_64__) && !defined(__aarch64__)\
68 && !defined(__mips__) && !defined(__s390__)\
69 && !defined(__sparc__)
70 COMPILER_CHECK(struct___old_kernel_stat_sz == sizeof(struct __old_kernel_stat));
73 COMPILER_CHECK(struct_kernel_stat_sz == sizeof(struct stat));
76 COMPILER_CHECK(struct_kernel_stat64_sz == sizeof(struct stat64));
79 CHECK_TYPE_SIZE(io_event);
80 CHECK_SIZE_AND_OFFSET(io_event, data);
81 CHECK_SIZE_AND_OFFSET(io_event, obj);
82 CHECK_SIZE_AND_OFFSET(io_event, res);
83 CHECK_SIZE_AND_OFFSET(io_event, res2);
85 #if !SANITIZER_ANDROID
86 COMPILER_CHECK(sizeof(struct __sanitizer_perf_event_attr) <=
87 sizeof(struct perf_event_attr));
88 CHECK_SIZE_AND_OFFSET(perf_event_attr, type);
89 CHECK_SIZE_AND_OFFSET(perf_event_attr, size);
92 COMPILER_CHECK(iocb_cmd_pread == IOCB_CMD_PREAD);
93 COMPILER_CHECK(iocb_cmd_pwrite == IOCB_CMD_PWRITE);
94 #if !SANITIZER_ANDROID
95 COMPILER_CHECK(iocb_cmd_preadv == IOCB_CMD_PREADV);
96 COMPILER_CHECK(iocb_cmd_pwritev == IOCB_CMD_PWRITEV);
99 CHECK_TYPE_SIZE(iocb);
100 CHECK_SIZE_AND_OFFSET(iocb, aio_data);
101 // Skip aio_key, it's weird.
102 CHECK_SIZE_AND_OFFSET(iocb, aio_lio_opcode);
103 CHECK_SIZE_AND_OFFSET(iocb, aio_reqprio);
104 CHECK_SIZE_AND_OFFSET(iocb, aio_fildes);
105 CHECK_SIZE_AND_OFFSET(iocb, aio_buf);
106 CHECK_SIZE_AND_OFFSET(iocb, aio_nbytes);
107 CHECK_SIZE_AND_OFFSET(iocb, aio_offset);
109 #endif // SANITIZER_LINUX