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watchdog: don't use static variable

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This commit is contained in:
Denis Vlasenko 2007-03-14 21:55:41 +00:00
parent 1ce190b7c1
commit cfa2b3a209
1 changed files with 9 additions and 9 deletions
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18
miscutils/watchdog.c
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@ -13,13 +13,12 @@
#define OPT_FOREGROUND 0x01
#define OPT_TIMER 0x02
/* Watchdog file descriptor */
static int fd;
static void watchdog_shutdown(int ATTRIBUTE_UNUSED unused)
static void watchdog_shutdown(int ATTRIBUTE_UNUSED sig) ATTRIBUTE_NORETURN;
static void watchdog_shutdown(int ATTRIBUTE_UNUSED sig)
{
write(fd, "V", 1); /* Magic, see watchdog-api.txt in kernel */
close(fd);
write(3, "V", 1); /* Magic, see watchdog-api.txt in kernel */
if (ENABLE_FEATURE_CLEAN_UP)
close(3);
exit(0);
}
@ -49,18 +48,19 @@ int watchdog_main(int argc, char **argv)
signal(SIGHUP, watchdog_shutdown);
signal(SIGINT, watchdog_shutdown);
fd = xopen(argv[argc - 1], O_WRONLY);
/* Use known fd # - avoid needing global 'int fd' */
dup2(xopen(argv[argc - 1], O_WRONLY), 3);
while (1) {
/*
* Make sure we clear the counter before sleeping, as the counter value
* is undefined at this point -- PFM
*/
write(fd, "\0", 1);
write(3, "", 1);
sleep(timer_duration);
}
watchdog_shutdown(0);
return EXIT_SUCCESS;
/* return EXIT_SUCCESS; */
}