1// Copyright (c) 2014, Google Inc.
2// All rights reserved.
3//
4// Redistribution and use in source and binary forms, with or without
5// modification, are permitted provided that the following conditions are
6// met:
7//
8//     * Redistributions of source code must retain the above copyright
9// notice, this list of conditions and the following disclaimer.
10//     * Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following disclaimer
12// in the documentation and/or other materials provided with the
13// distribution.
14//     * Neither the name of Google Inc. nor the names of its
15// contributors may be used to endorse or promote products derived from
16// this software without specific prior written permission.
17//
18// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29
30#include <stdio.h>
31#include <sys/wait.h>
32#include <unistd.h>
33
34namespace google_breakpad {
35
36void LaunchReporter(const char *reporter_executable_path,
37                    const char *config_file_path) {
38  const char* argv[] = { reporter_executable_path, config_file_path, NULL };
39
40  // Launch the reporter
41  pid_t pid = fork();
42
43  if (pid == -1) {
44    perror("fork");
45    fprintf(stderr, "Failed to fork reporter process\n");
46    return;
47  }
48
49  // If we're in the child, load in our new executable and run.
50  // The parent will not wait for the child to complete.
51  if (pid == 0) {
52    execv(argv[0], (char* const*)argv);
53    perror("exec");
54    fprintf(stderr,
55            "Failed to launch reporter process from path %s\n",
56            reporter_executable_path);
57    unlink(config_file_path);  // launch failed - get rid of config file
58    _exit(1);
59  }
60
61  // Wait until the Reporter child process exits.
62  //
63
64  // We'll use a timeout of one minute.
65  int timeout_count = 60;   // 60 seconds
66
67  while (timeout_count-- > 0) {
68    int status;
69    pid_t result = waitpid(pid, &status, WNOHANG);
70
71    if (result == 0) {
72      // The child has not yet finished.
73      sleep(1);
74    } else if (result == -1) {
75      // error occurred.
76      break;
77    } else {
78      // child has finished
79      break;
80    }
81  }
82}
83
84}  // namespace google_breakpad
85