Kostya Serebryany | 6fb47af | 2013-02-27 11:22:40 +0000 | [diff] [blame] | 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 | |
Alexey Samsonov | 10f3ab7 | 2013-04-05 07:41:21 +0000 | [diff] [blame] | 16 | #include "sanitizer_common.h" |
Kostya Serebryany | 6fb47af | 2013-02-27 11:22:40 +0000 | [diff] [blame] | 17 | #include "sanitizer_internal_defs.h" |
| 18 | |
| 19 | struct sigaltstack; |
| 20 | |
| 21 | namespace __sanitizer { |
| 22 | // Dirent structure for getdents(). Note that this structure is different from |
| 23 | // the one in <dirent.h>, which is used by readdir(). |
| 24 | struct linux_dirent; |
| 25 | |
| 26 | // Syscall wrappers. |
Peter Collingbourne | 9578a3e | 2013-05-08 14:43:49 +0000 | [diff] [blame] | 27 | uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count); |
| 28 | uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5); |
| 29 | uptr internal_sigaltstack(const struct sigaltstack* ss, |
| 30 | struct sigaltstack* oss); |
Kostya Serebryany | 6fb47af | 2013-02-27 11:22:40 +0000 | [diff] [blame] | 31 | |
| 32 | // This class reads thread IDs from /proc/<pid>/task using only syscalls. |
| 33 | class ThreadLister { |
| 34 | public: |
| 35 | explicit ThreadLister(int pid); |
| 36 | ~ThreadLister(); |
| 37 | // GetNextTID returns -1 if the list of threads is exhausted, or if there has |
| 38 | // been an error. |
| 39 | int GetNextTID(); |
| 40 | void Reset(); |
| 41 | bool error(); |
| 42 | |
| 43 | private: |
| 44 | bool GetDirectoryEntries(); |
| 45 | |
| 46 | int pid_; |
| 47 | int descriptor_; |
Alexey Samsonov | 10f3ab7 | 2013-04-05 07:41:21 +0000 | [diff] [blame] | 48 | InternalScopedBuffer<char> buffer_; |
Kostya Serebryany | 6fb47af | 2013-02-27 11:22:40 +0000 | [diff] [blame] | 49 | bool error_; |
| 50 | struct linux_dirent* entry_; |
| 51 | int bytes_read_; |
| 52 | }; |
Evgeniy Stepanov | b9bf700 | 2013-03-19 09:30:52 +0000 | [diff] [blame] | 53 | |
| 54 | void AdjustStackSizeLinux(void *attr, int verbosity); |
| 55 | |
Sergey Matveev | 24323de | 2013-05-07 14:41:43 +0000 | [diff] [blame] | 56 | // Exposed for testing. |
| 57 | uptr ThreadDescriptorSize(); |
Sergey Matveev | 4c08644 | 2013-05-29 13:07:42 +0000 | [diff] [blame] | 58 | uptr ThreadSelf(); |
| 59 | uptr ThreadSelfOffset(); |
Sergey Matveev | 24323de | 2013-05-07 14:41:43 +0000 | [diff] [blame] | 60 | |
Sergey Matveev | 3de0086 | 2013-05-14 13:24:46 +0000 | [diff] [blame] | 61 | // Matches a library's file name against a base name (stripping path and version |
| 62 | // information). |
| 63 | bool LibraryNameIs(const char *full_name, const char *base_name); |
| 64 | |
Peter Collingbourne | 51c963a | 2013-05-29 12:11:43 +0000 | [diff] [blame] | 65 | // Read the name of the current binary from /proc/self/exe. |
| 66 | uptr ReadBinaryName(/*out*/char *buf, uptr buf_len); |
| 67 | |
Kostya Serebryany | 6fb47af | 2013-02-27 11:22:40 +0000 | [diff] [blame] | 68 | } // namespace __sanitizer |
| 69 | |
| 70 | #endif // SANITIZER_LINUX_H |