GNUnet  0.11.x
gnunet-timeout.c
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1 /*
2  This file is part of GNUnet
3  Copyright (C) 2010 GNUnet e.V.
4 
5  GNUnet is free software: you can redistribute it and/or modify it
6  under the terms of the GNU Affero General Public License as published
7  by the Free Software Foundation, either version 3 of the License, or
8  (at your option) any later version.
9 
10  GNUnet is distributed in the hope that it will be useful, but
11  WITHOUT ANY WARRANTY; without even the implied warranty of
12  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13  Affero General Public License for more details.
14 
15  You should have received a copy of the GNU Affero General Public License
16  along with this program. If not, see <http://www.gnu.org/licenses/>.
17 
18  SPDX-License-Identifier: AGPL3.0-or-later
19  */
20 
27 #include <sys/types.h>
28 #include <sys/wait.h>
29 #include <signal.h>
30 #include <stdio.h>
31 #include <stdlib.h>
32 #include <unistd.h>
33 
34 static pid_t child;
35 
36 
37 static void
38 sigchld_handler (int val)
39 {
40  int status = 0;
41  int ret = 0;
42 
43  (void) val;
44  waitpid (child, &status, 0);
45  if (WIFEXITED (status) != 0)
46  {
47  ret = WEXITSTATUS (status);
48  fprintf (stderr, "Process exited with result %u\n", ret);
49  _exit (ret); /* return same status code */
50  }
51  if (WIFSIGNALED (status) != 0)
52  {
53  ret = WTERMSIG (status);
54  fprintf (stderr, "Process received signal %u\n", ret);
55  kill (getpid (), ret); /* kill self with the same signal */
56  }
57  _exit (-1);
58 }
59 
60 
61 static void
62 sigint_handler (int val)
63 {
64  kill (0, val);
65  _exit (val);
66 }
67 
68 
69 int
70 main (int argc, char *argv[])
71 {
72  int timeout = 0;
73  pid_t gpid = 0;
74 
75  if (argc < 3)
76  {
77  fprintf (stderr,
78  "arg 1: timeout in sec., arg 2: executable, arg<n> arguments\n");
79  exit (-1);
80  }
81 
82  timeout = atoi (argv[1]);
83 
84  if (timeout == 0)
85  timeout = 600;
86 
87  /* with getpgid() it does not compile, but getpgrp is the BSD version and working */
88  gpid = getpgrp ();
89 
90  signal (SIGCHLD, sigchld_handler);
91  signal (SIGABRT, sigint_handler);
92  signal (SIGFPE, sigint_handler);
93  signal (SIGILL, sigint_handler);
94  signal (SIGINT, sigint_handler);
95  signal (SIGSEGV, sigint_handler);
96  signal (SIGTERM, sigint_handler);
97 
98  child = fork ();
99  if (child == 0)
100  {
101  /* int setpgrp(pid_t pid, pid_t pgid); is not working on this machine */
102  // setpgrp (0, pid_t gpid);
103  if (-1 != gpid)
104  setpgid (0, gpid);
105  execvp (argv[2], &argv[2]);
106  exit (-1);
107  }
108  if (child > 0)
109  {
110  sleep (timeout);
111  printf ("Child processes were killed after timeout of %u seconds\n",
112  timeout);
113  kill (0, SIGTERM);
114  exit (3);
115  }
116  exit (-1);
117 }
118 
119 
120 /* end of timeout_watchdog.c */
static int ret
Return value of the commandline.
Definition: gnunet-abd.c:81
static pid_t child
static void sigint_handler(int val)
static struct GNUNET_TIME_Relative timeout
Desired timeout for the lookup (default is no timeout).
Definition: gnunet-abd.c:61
uint16_t status
See PRISM_STATUS_*-constants.
static void sigchld_handler(int val)
int main(int argc, char *argv[])