diff options
Diffstat (limited to 'toolkit/crashreporter/google-breakpad/src/common/linux/memory_mapped_file.cc')
-rw-r--r-- | toolkit/crashreporter/google-breakpad/src/common/linux/memory_mapped_file.cc | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/toolkit/crashreporter/google-breakpad/src/common/linux/memory_mapped_file.cc b/toolkit/crashreporter/google-breakpad/src/common/linux/memory_mapped_file.cc deleted file mode 100644 index 4e938269f..000000000 --- a/toolkit/crashreporter/google-breakpad/src/common/linux/memory_mapped_file.cc +++ /dev/null @@ -1,107 +0,0 @@ -// Copyright (c) 2011, Google Inc. -// All rights reserved. -// -// Redistribution and use in source and binary forms, with or without -// modification, are permitted provided that the following conditions are -// met: -// -// * Redistributions of source code must retain the above copyright -// notice, this list of conditions and the following disclaimer. -// * Redistributions in binary form must reproduce the above -// copyright notice, this list of conditions and the following disclaimer -// in the documentation and/or other materials provided with the -// distribution. -// * Neither the name of Google Inc. nor the names of its -// contributors may be used to endorse or promote products derived from -// this software without specific prior written permission. -// -// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS -// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT -// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR -// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT -// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, -// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT -// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE -// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - -// memory_mapped_file.cc: Implement google_breakpad::MemoryMappedFile. -// See memory_mapped_file.h for details. - -#include "common/linux/memory_mapped_file.h" - -#include <fcntl.h> -#include <sys/mman.h> -#if defined(__ANDROID__) -#include <sys/stat.h> -#endif -#include <unistd.h> - -#include "common/memory_range.h" -#include "third_party/lss/linux_syscall_support.h" - -namespace google_breakpad { - -MemoryMappedFile::MemoryMappedFile() {} - -MemoryMappedFile::MemoryMappedFile(const char* path, size_t offset) { - Map(path, offset); -} - -MemoryMappedFile::~MemoryMappedFile() { - Unmap(); -} - -#include <unistd.h> - -bool MemoryMappedFile::Map(const char* path, size_t offset) { - Unmap(); - - int fd = sys_open(path, O_RDONLY, 0); - if (fd == -1) { - return false; - } - -#if defined(__x86_64__) || defined(__aarch64__) || \ - (defined(__mips__) && _MIPS_SIM == _ABI64) - - struct kernel_stat st; - if (sys_fstat(fd, &st) == -1 || st.st_size < 0) { -#else - struct kernel_stat64 st; - if (sys_fstat64(fd, &st) == -1 || st.st_size < 0) { -#endif - sys_close(fd); - return false; - } - - // Strangely file size can be negative, but we check above that it is not. - size_t file_len = static_cast<size_t>(st.st_size); - // If the file does not extend beyond the offset, simply use an empty - // MemoryRange and return true. Don't bother to call mmap() - // even though mmap() can handle an empty file on some platforms. - if (offset >= file_len) { - sys_close(fd); - return true; - } - - void* data = sys_mmap(NULL, file_len, PROT_READ, MAP_PRIVATE, fd, offset); - sys_close(fd); - if (data == MAP_FAILED) { - return false; - } - - content_.Set(data, file_len - offset); - return true; -} - -void MemoryMappedFile::Unmap() { - if (content_.data()) { - sys_munmap(const_cast<uint8_t*>(content_.data()), content_.length()); - content_.Set(NULL, 0); - } -} - -} // namespace google_breakpad |