/thirdparty/breakpad/client/linux/crash_generation/crash_generation_client.cc
http://github.com/tomahawk-player/tomahawk · C++ · 89 lines · 46 code · 13 blank · 30 comment · 1 complexity · 09f452ae8973aa1a8d727a81a0a0fd39 MD5 · raw file
- // Copyright (c) 2010 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.
- #include <stdio.h>
- #include <sys/socket.h>
- #include <sys/types.h>
- #include <algorithm>
- #include "client/linux/crash_generation/crash_generation_client.h"
- #include "common/linux/eintr_wrapper.h"
- #include "common/linux/linux_libc_support.h"
- #include "third_party/lss/linux_syscall_support.h"
- namespace google_breakpad {
- bool
- CrashGenerationClient::RequestDump(const void* blob, size_t blob_size)
- {
- int fds[2];
- sys_socketpair(AF_UNIX, SOCK_STREAM, 0, fds);
- static const unsigned kControlMsgSize = CMSG_SPACE(sizeof(int));
- struct kernel_msghdr msg;
- my_memset(&msg, 0, sizeof(struct kernel_msghdr));
- struct kernel_iovec iov[1];
- iov[0].iov_base = const_cast<void*>(blob);
- iov[0].iov_len = blob_size;
- msg.msg_iov = iov;
- msg.msg_iovlen = sizeof(iov) / sizeof(iov[0]);
- char cmsg[kControlMsgSize];
- my_memset(cmsg, 0, kControlMsgSize);
- msg.msg_control = cmsg;
- msg.msg_controllen = sizeof(cmsg);
- struct cmsghdr* hdr = CMSG_FIRSTHDR(&msg);
- hdr->cmsg_level = SOL_SOCKET;
- hdr->cmsg_type = SCM_RIGHTS;
- hdr->cmsg_len = CMSG_LEN(sizeof(int));
- int* p = reinterpret_cast<int*>(CMSG_DATA(hdr));
- *p = fds[1];
- HANDLE_EINTR(sys_sendmsg(server_fd_, &msg, 0));
- sys_close(fds[1]);
- // wait for an ACK from the server
- char b;
- HANDLE_EINTR(sys_read(fds[0], &b, 1));
- return true;
- }
- //static
- CrashGenerationClient*
- CrashGenerationClient::TryCreate(int server_fd)
- {
- if (0 > server_fd)
- return NULL;
- return new CrashGenerationClient(server_fd);
- }
- }