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author | Kostya Serebryany <kcc@google.com> | 2013-11-04 21:33:31 +0000 |
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committer | Kostya Serebryany <kcc@gcc.gnu.org> | 2013-11-04 21:33:31 +0000 |
commit | ef1b3fda32c08e9bd6977b96e1e619aae3e3726a (patch) | |
tree | 7cfc103c9b6b4ce7ca19d39f91509a1b68819a63 /libsanitizer/sanitizer_common/sanitizer_linux.h | |
parent | fd5564d3c71195714c28ba150de7e9b90bf9c83d (diff) | |
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libsanitizer merge from upstream r191666
This may break gcc-asan on Mac, will follow up separately.
From-SVN: r204368
Diffstat (limited to 'libsanitizer/sanitizer_common/sanitizer_linux.h')
-rw-r--r-- | libsanitizer/sanitizer_common/sanitizer_linux.h | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/libsanitizer/sanitizer_common/sanitizer_linux.h b/libsanitizer/sanitizer_common/sanitizer_linux.h new file mode 100644 index 0000000..5bbf479 --- /dev/null +++ b/libsanitizer/sanitizer_common/sanitizer_linux.h @@ -0,0 +1,81 @@ +//===-- sanitizer_linux.h ---------------------------------------*- C++ -*-===// +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// Linux-specific syscall wrappers and classes. +// +//===----------------------------------------------------------------------===// +#ifndef SANITIZER_LINUX_H +#define SANITIZER_LINUX_H + +#include "sanitizer_platform.h" +#if SANITIZER_LINUX +#include "sanitizer_common.h" +#include "sanitizer_internal_defs.h" + +struct link_map; // Opaque type returned by dlopen(). +struct sigaltstack; + +namespace __sanitizer { +// Dirent structure for getdents(). Note that this structure is different from +// the one in <dirent.h>, which is used by readdir(). +struct linux_dirent; + +// Syscall wrappers. +uptr internal_getdents(fd_t fd, struct linux_dirent *dirp, unsigned int count); +uptr internal_prctl(int option, uptr arg2, uptr arg3, uptr arg4, uptr arg5); +uptr internal_sigaltstack(const struct sigaltstack* ss, + struct sigaltstack* oss); +#ifdef __x86_64__ +uptr internal_clone(int (*fn)(void *), void *child_stack, int flags, void *arg, + int *parent_tidptr, void *newtls, int *child_tidptr); +#endif + +// This class reads thread IDs from /proc/<pid>/task using only syscalls. +class ThreadLister { + public: + explicit ThreadLister(int pid); + ~ThreadLister(); + // GetNextTID returns -1 if the list of threads is exhausted, or if there has + // been an error. + int GetNextTID(); + void Reset(); + bool error(); + + private: + bool GetDirectoryEntries(); + + int pid_; + int descriptor_; + InternalScopedBuffer<char> buffer_; + bool error_; + struct linux_dirent* entry_; + int bytes_read_; +}; + +void AdjustStackSizeLinux(void *attr, int verbosity); + +// Exposed for testing. +uptr ThreadDescriptorSize(); +uptr ThreadSelf(); +uptr ThreadSelfOffset(); + +// Matches a library's file name against a base name (stripping path and version +// information). +bool LibraryNameIs(const char *full_name, const char *base_name); + +// Read the name of the current binary from /proc/self/exe. +uptr ReadBinaryName(/*out*/char *buf, uptr buf_len); +// Cache the value of /proc/self/exe. +void CacheBinaryName(); + +// Call cb for each region mapped by map. +void ForEachMappedRegion(link_map *map, void (*cb)(const void *, uptr)); + +} // namespace __sanitizer + +#endif // SANITIZER_LINUX +#endif // SANITIZER_LINUX_H |