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 
34 namespace google_breakpad {
35 
LaunchReporter(const char * reporter_executable_path,const char * config_file_path)36 void 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