aboutsummaryrefslogtreecommitdiff
path: root/src/util/gnunet-timeout.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/util/gnunet-timeout.c')
-rw-r--r--src/util/gnunet-timeout.c128
1 files changed, 128 insertions, 0 deletions
diff --git a/src/util/gnunet-timeout.c b/src/util/gnunet-timeout.c
new file mode 100644
index 000000000..8dfb6ad17
--- /dev/null
+++ b/src/util/gnunet-timeout.c
@@ -0,0 +1,128 @@
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
19/**
20 * @file src/util/gnunet-timeout.c
21 * @brief small tool starting a child process, waiting that it terminates or killing it after a given timeout period
22 * @author Matthias Wachs
23 */
24
25#include <sys/types.h>
26#include <sys/wait.h>
27#include <signal.h>
28#include <stdio.h>
29#include <stdlib.h>
30#include <unistd.h>
31
32static pid_t child;
33
34
35static void
36sigchld_handler (int val)
37{
38 int status = 0;
39 int ret = 0;
40
41 (void) val;
42 waitpid (child,
43 &status,
44 0);
45 if (WIFEXITED (status) != 0)
46 {
47 ret = WEXITSTATUS (status);
48 fprintf (stderr,
49 "Process exited with result %u\n",
50 ret);
51 exit (ret); /* return same status code */
52 }
53 if (WIFSIGNALED (status) != 0)
54 {
55 ret = WTERMSIG (status);
56 fprintf (stderr,
57 "Process received signal %u\n",
58 ret);
59 kill (getpid (),
60 ret); /* kill self with the same signal */
61 }
62 exit (-1);
63}
64
65
66static void
67sigint_handler (int val)
68{
69 kill (0,
70 val);
71 exit (val);
72}
73
74
75int
76main (int argc,
77 char *argv[])
78{
79 int timeout = 0;
80 pid_t gpid = 0;
81
82 if (argc < 3)
83 {
84 fprintf (stderr,
85 "arg 1: timeout in sec., arg 2: executable, arg<n> arguments\n");
86 exit (-1);
87 }
88
89 timeout = atoi (argv[1]);
90
91 if (timeout == 0)
92 timeout = 600;
93
94 /* with getpgid() it does not compile, but getpgrp is the BSD version and working */
95 gpid = getpgrp ();
96
97 signal (SIGCHLD, sigchld_handler);
98 signal (SIGABRT, sigint_handler);
99 signal (SIGFPE, sigint_handler);
100 signal (SIGILL, sigint_handler);
101 signal (SIGINT, sigint_handler);
102 signal (SIGSEGV, sigint_handler);
103 signal (SIGTERM, sigint_handler);
104
105 child = fork ();
106 if (child == 0)
107 {
108 /* int setpgrp(pid_t pid, pid_t pgid); is not working on this machine */
109 //setpgrp (0, pid_t gpid);
110 if (-1 != gpid)
111 setpgid (0, gpid);
112 execvp (argv[2],
113 &argv[2]);
114 exit (-1);
115 }
116 if (child > 0)
117 {
118 sleep (timeout);
119 printf ("Child processes were killed after timeout of %u seconds\n",
120 timeout);
121 kill (0,
122 SIGTERM);
123 exit (3);
124 }
125 exit (-1);
126}
127
128/* end of timeout_watchdog.c */