projects / rustc.git / blame
| Commit | Line | Data |
|---|---|---|
| 1a4d82fc JJ |
1 | //===-- sanitizer_linux.h ---------------------------------------*- C++ -*-===// |
| 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 | // Linux-specific syscall wrappers and classes. | |
| 11 | // | |
| 12 | //===----------------------------------------------------------------------===// | |
| 13 | #ifndef SANITIZER_LINUX_H | |
| 14 | #define SANITIZER_LINUX_H | |
| 15 | ||
| 16 | #include "sanitizer_platform.h" | |
| 17 | #if SANITIZER_FREEBSD || SANITIZER_LINUX | |
| 18 | #include "sanitizer_common.h" | |
| 19 | #include "sanitizer_internal_defs.h" | |
| 92a42be0 | 20 | #include "sanitizer_posix.h" |
| 1a4d82fc JJ |
21 | #include "sanitizer_platform_limits_posix.h" |
| 22 | ||
| 23 | struct link_map; // Opaque type returned by dlopen(). | |
| 24 | struct sigaltstack; | |
| 25 | ||
| 26 | namespace __sanitizer { | |
| 27 | // Dirent structure for getdents(). Note that this structure is different from | |
| 28 | // the one in <dirent.h>, which is used by readdir(). | |
| 29 | struct linux_dirent; | |
| 30 | ||
| 31 | // Syscall wrappers. | |
| 32 | uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count); | |
| 33 | uptr internal_sigaltstack(const struct sigaltstack* ss, | |
| 34 | struct sigaltstack* oss); | |
| 35 | uptr internal_sigprocmask(int how, __sanitizer_sigset_t *set, | |
| 36 | __sanitizer_sigset_t *oldset); | |
| 37 | void internal_sigfillset(__sanitizer_sigset_t *set); | |
| 38 | ||
| 39 | // Linux-only syscalls. | |
| 40 | #if SANITIZER_LINUX | |
| 41 | uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5); | |
| 42 | // Used only by sanitizer_stoptheworld. Signal handlers that are actually used | |
| 43 | // (like the process-wide error reporting SEGV handler) must use | |
| 44 | // internal_sigaction instead. | |
| 45 | int internal_sigaction_norestorer(int signum, const void *act, void *oldact); | |
| 46 | void internal_sigdelset(__sanitizer_sigset_t *set, int signum); | |
| 92a42be0 | 47 | #if defined(__x86_64__) || defined(__mips__) || defined(__aarch64__) |
| 1a4d82fc JJ |
48 | uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg, |
| 49 | int *parent_tidptr, void *newtls, int *child_tidptr); | |
| 50 | #endif | |
| 51 | #endif // SANITIZER_LINUX | |
| 52 | ||
| 53 | // This class reads thread IDs from /proc/<pid>/task using only syscalls. | |
| 54 | class ThreadLister { | |
| 55 | public: | |
| 56 | explicit ThreadLister(int pid); | |
| 57 | ~ThreadLister(); | |
| 58 | // GetNextTID returns -1 if the list of threads is exhausted, or if there has | |
| 59 | // been an error. | |
| 60 | int GetNextTID(); | |
| 61 | void Reset(); | |
| 62 | bool error(); | |
| 63 | ||
| 64 | private: | |
| 65 | bool GetDirectoryEntries(); | |
| 66 | ||
| 67 | int pid_; | |
| 68 | int descriptor_; | |
| 69 | InternalScopedBuffer<char> buffer_; | |
| 70 | bool error_; | |
| 71 | struct linux_dirent* entry_; | |
| 72 | int bytes_read_; | |
| 73 | }; | |
| 74 | ||
| 75 | // Exposed for testing. | |
| 76 | uptr ThreadDescriptorSize(); | |
| 77 | uptr ThreadSelf(); | |
| 78 | uptr ThreadSelfOffset(); | |
| 79 | ||
| 80 | // Matches a library's file name against a base name (stripping path and version | |
| 81 | // information). | |
| 82 | bool LibraryNameIs(const char *full_name, const char *base_name); | |
| 83 | ||
| 1a4d82fc JJ |
84 | // Call cb for each region mapped by map. |
| 85 | void ForEachMappedRegion(link_map *map, void (*cb)(const void *, uptr)); | |
| 86 | } // namespace __sanitizer | |
| 87 | ||
| 88 | #endif // SANITIZER_FREEBSD || SANITIZER_LINUX | |
| 89 | #endif // SANITIZER_LINUX_H |