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07e521c396
This patch is part of a bigger patch that helps merging the breakpad code with the modified version in Chromium OS. Specifically, this patch makes the following changes: 1. Add an ElfCoreDump class for processing Linux core dump files, which will later be used to implement the core dump to minidump conversion. 2. Add a CrashGenerator class for generating a crash with a core dump file for testing the functionalities of ElfCoreDump. 3. Move some utility functions for reading/writing files to file_utils.h. BUG=455 TEST=Tested the following: 1. Build on 32-bit and 64-bit Linux with gcc 4.4.3 and gcc 4.6. 2. Build on Mac OS X 10.6.8 with gcc 4.2 and clang 3.0 (with latest gmock). 3. All unit tests pass. Review URL: http://breakpad.appspot.com/337001 git-svn-id: http://google-breakpad.googlecode.com/svn/trunk@900 4c0a9323-5329-0410-9bdc-e9ce6186880e
98 lines
3.2 KiB
C++
98 lines
3.2 KiB
C++
// Copyright (c) 2011, Google Inc.
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// All rights reserved.
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//
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following disclaimer
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// in the documentation and/or other materials provided with the
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// distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived from
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// this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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// file_utils.cc: Implement utility functions for file manipulation.
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// See file_utils.h for details.
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#include <fcntl.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "common/linux/eintr_wrapper.h"
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#include "common/tests/file_utils.h"
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namespace google_breakpad {
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bool ReadFile(const char* path, void* buffer, ssize_t* buffer_size) {
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int fd = HANDLE_EINTR(open(path, O_RDONLY));
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if (fd == -1) {
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perror("open");
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return false;
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}
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bool ok = true;
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if (buffer && buffer_size && *buffer_size > 0) {
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memset(buffer, 0, sizeof(*buffer_size));
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*buffer_size = HANDLE_EINTR(read(fd, buffer, *buffer_size));
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if (*buffer_size == -1) {
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perror("read");
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ok = false;
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}
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}
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if (HANDLE_EINTR(close(fd)) == -1) {
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perror("close");
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ok = false;
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}
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return ok;
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}
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bool WriteFile(const char* path, const void* buffer, size_t buffer_size) {
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int fd = HANDLE_EINTR(open(path, O_CREAT | O_TRUNC | O_WRONLY, S_IRWXU));
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if (fd == -1) {
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perror("open");
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return false;
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}
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bool ok = true;
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if (buffer) {
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size_t bytes_written_total = 0;
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ssize_t bytes_written_partial = 0;
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const char* data = reinterpret_cast<const char*>(buffer);
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while (bytes_written_total < buffer_size) {
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bytes_written_partial =
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HANDLE_EINTR(write(fd, data + bytes_written_total,
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buffer_size - bytes_written_total));
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if (bytes_written_partial < 0) {
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perror("write");
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ok = false;
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break;
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}
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bytes_written_total += bytes_written_partial;
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}
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}
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if (HANDLE_EINTR(close(fd)) == -1) {
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perror("close");
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ok = false;
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}
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return ok;
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}
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} // namespace google_breakpad
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