1 //===-- sanitizer_linux.h ---------------------------------------*- C++ -*-===//
3 // This file is distributed under the University of Illinois Open Source
4 // License. See LICENSE.TXT for details.
6 //===----------------------------------------------------------------------===//
8 // Linux-specific syscall wrappers and classes.
10 //===----------------------------------------------------------------------===//
11 #ifndef SANITIZER_LINUX_H
12 #define SANITIZER_LINUX_H
14 #include "sanitizer_platform.h"
15 #if SANITIZER_FREEBSD || SANITIZER_LINUX
16 #include "sanitizer_common.h"
17 #include "sanitizer_internal_defs.h"
18 #include "sanitizer_posix.h"
19 #include "sanitizer_platform_limits_posix.h"
21 struct link_map
; // Opaque type returned by dlopen().
23 namespace __sanitizer
{
24 // Dirent structure for getdents(). Note that this structure is different from
25 // the one in <dirent.h>, which is used by readdir().
29 uptr
internal_getdents(fd_t fd
, struct linux_dirent
*dirp
, unsigned int count
);
30 uptr
internal_sigaltstack(const void* ss
, void* oss
);
31 uptr
internal_sigprocmask(int how
, __sanitizer_sigset_t
*set
,
32 __sanitizer_sigset_t
*oldset
);
34 // Linux-only syscalls.
36 uptr
internal_prctl(int option
, uptr arg2
, uptr arg3
, uptr arg4
, uptr arg5
);
37 // Used only by sanitizer_stoptheworld. Signal handlers that are actually used
38 // (like the process-wide error reporting SEGV handler) must use
39 // internal_sigaction instead.
40 int internal_sigaction_norestorer(int signum
, const void *act
, void *oldact
);
41 #if (defined(__x86_64__) || SANITIZER_MIPS64) && !SANITIZER_GO
42 // Uses a raw system call to avoid interceptors.
43 int internal_sigaction_syscall(int signum
, const void *act
, void *oldact
);
45 void internal_sigdelset(__sanitizer_sigset_t
*set
, int signum
);
46 #if defined(__x86_64__) || defined(__mips__) || defined(__aarch64__) \
47 || defined(__powerpc64__) || defined(__s390__)
48 uptr
internal_clone(int (*fn
)(void *), void *child_stack
, int flags
, void *arg
,
49 int *parent_tidptr
, void *newtls
, int *child_tidptr
);
51 #endif // SANITIZER_LINUX
53 // This class reads thread IDs from /proc/<pid>/task using only syscalls.
56 explicit ThreadLister(int pid
);
58 // GetNextTID returns -1 if the list of threads is exhausted, or if there has
65 bool GetDirectoryEntries();
69 InternalScopedBuffer
<char> buffer_
;
71 struct linux_dirent
* entry_
;
75 // Exposed for testing.
76 uptr
ThreadDescriptorSize();
78 uptr
ThreadSelfOffset();
80 // Matches a library's file name against a base name (stripping path and version
82 bool LibraryNameIs(const char *full_name
, const char *base_name
);
84 // Call cb for each region mapped by map.
85 void ForEachMappedRegion(link_map
*map
, void (*cb
)(const void *, uptr
));
86 } // namespace __sanitizer
88 #endif // SANITIZER_FREEBSD || SANITIZER_LINUX
89 #endif // SANITIZER_LINUX_H