3 * push.c -- push a fork into the background
5 * This code is Copyright (c) 2002, by the authors of nmh. See the
6 * COPYRIGHT file in the root directory of the nmh distribution for
7 * complete copyright information.
11 #include <h/signals.h>
21 for (i = 0; (pid = fork()) == -1 && i < 5; i++)
27 advise (NULL, "unable to fork, so can't push...");
31 /* child, block a few signals and continue */
32 SIGNAL (SIGHUP, SIG_IGN);
33 SIGNAL (SIGINT, SIG_IGN);
34 SIGNAL (SIGQUIT, SIG_IGN);
35 SIGNAL (SIGTERM, SIG_IGN);
37 SIGNAL (SIGTSTP, SIG_IGN);
38 SIGNAL (SIGTTIN, SIG_IGN);
39 SIGNAL (SIGTTOU, SIG_IGN);
41 freopen ("/dev/null", "r", stdin);
42 freopen ("/dev/null", "w", stdout);
46 /* parent, just exit */