mirror of
https://github.com/sheumann/hush.git
synced 2024-07-04 21:29:34 +00:00
d921b2ecc0
things like xasprintf() into xfuncs.c, remove xprint_file_by_name() (it only had one user), clean up lots of #includes... General cleanup pass. What I've been doing for the last couple days. And it conflicts! I've removed httpd.c from this checkin due to somebody else touching that file. It builds for me. I have to catch a bus. (Now you know why I'm looking forward to Mercurial.)
66 lines
1.4 KiB
C
66 lines
1.4 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini watchdog implementation for busybox
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*
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* Copyright (C) 2003 Paul Mundt <lethal@linux-sh.org>
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* Copyright (C) 2006 Bernhard Fischer <busybox@busybox.net>
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*
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* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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*/
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#include "busybox.h"
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#define OPT_FOREGROUND 0x01
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#define OPT_TIMER 0x02
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/* Watchdog file descriptor */
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static int fd;
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static void watchdog_shutdown(int ATTRIBUTE_UNUSED unused)
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{
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write(fd, "V", 1); /* Magic, see watchdog-api.txt in kernel */
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close(fd);
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exit(0);
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}
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int watchdog_main(int argc, char **argv)
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{
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unsigned long opts;
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unsigned long timer_duration = 30; /* Userspace timer duration, in seconds */
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char *t_arg;
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opts = bb_getopt_ulflags(argc, argv, "Ft:", &t_arg);
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if (opts & OPT_TIMER)
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timer_duration = bb_xgetlarg(t_arg, 10, 0, INT_MAX);
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/* We're only interested in the watchdog device .. */
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if (optind < argc - 1 || argc == 1)
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bb_show_usage();
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#ifdef BB_NOMMU
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if (!(opts & OPT_FOREGROUND))
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vfork_daemon_rexec(0, 1, argc, argv, "-F");
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#else
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xdaemon(0, 1);
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#endif
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signal(SIGHUP, watchdog_shutdown);
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signal(SIGINT, watchdog_shutdown);
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fd = xopen(argv[argc - 1], O_WRONLY);
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while (1) {
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/*
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* Make sure we clear the counter before sleeping, as the counter value
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* is undefined at this point -- PFM
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*/
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write(fd, "\0", 1);
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sleep(timer_duration);
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}
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watchdog_shutdown(0);
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return EXIT_SUCCESS;
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}
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