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