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| author | Denis Vlasenko <vda.linux@googlemail.com> | 2007-09-05 12:13:51 +0000 |
|---|---|---|
| committer | Denis Vlasenko <vda.linux@googlemail.com> | 2007-09-05 12:13:51 +0000 |
| commit | 3638cc44629703585f29f4b7125da1e7b3a1aedc (patch) | |
| tree | 52dbab8d922a2144715cd01497f48ced362a6bee /miscutils/watchdog.c | |
| parent | 211f7f88ae67e875bed50409b2edbb6d740fc648 (diff) | |
| download | busybox-3638cc44629703585f29f4b7125da1e7b3a1aedc.tar.gz | |
watchdog: allow millisecond spec (-t 250ms)
function old new delta
packed_usage 23069 23113 +44
static.suffixes - 24 +24
watchdog_main 147 160 +13
static.V - 1 +1
------------------------------------------------------------------------------
(add/remove: 2/0 grow/shrink: 2/0 up/down: 82/0) Total: 82 bytes
Diffstat (limited to 'miscutils/watchdog.c')
| -rw-r--r-- | miscutils/watchdog.c | 24 |
1 files changed, 15 insertions, 9 deletions
diff --git a/miscutils/watchdog.c b/miscutils/watchdog.c index aa367d5ab..14bd44f48 100644 --- a/miscutils/watchdog.c +++ b/miscutils/watchdog.c @@ -16,7 +16,9 @@ static void watchdog_shutdown(int ATTRIBUTE_UNUSED sig) ATTRIBUTE_NORETURN; static void watchdog_shutdown(int ATTRIBUTE_UNUSED sig) { - write(3, "V", 1); /* Magic, see watchdog-api.txt in kernel */ + static const char V = 'V'; + + write(3, &V, 1); /* Magic, see watchdog-api.txt in kernel */ if (ENABLE_FEATURE_CLEAN_UP) close(3); exit(0); @@ -26,14 +28,20 @@ int watchdog_main(int argc, char **argv); int watchdog_main(int argc, char **argv) { unsigned opts; - unsigned timer_duration = 30; /* Userspace timer duration, in seconds */ + unsigned timer_duration = 30000; /* Userspace timer duration, in milliseconds */ char *t_arg; opt_complementary = "=1"; /* must have 1 argument */ opts = getopt32(argv, "Ft:", &t_arg); - if (opts & OPT_TIMER) - timer_duration = xatou(t_arg); + if (opts & OPT_TIMER) { + static const struct suffix_mult suffixes[] = { + { "ms", 1 }, + { "", 1000 }, + { } + }; + timer_duration = xatou_sfx(t_arg, suffixes); + } if (!(opts & OPT_FOREGROUND)) { bb_daemonize_or_rexec(DAEMON_CHDIR_ROOT, argv); @@ -50,10 +58,8 @@ int watchdog_main(int argc, char **argv) * Make sure we clear the counter before sleeping, as the counter value * is undefined at this point -- PFM */ - write(3, "", 1); - sleep(timer_duration); + write(3, "", 1); /* write zero byte */ + usleep(timer_duration * 1000L); } - - watchdog_shutdown(0); - /* return EXIT_SUCCESS; */ + return EXIT_SUCCESS; /* - not reached, but gcc 4.2.1 is too dumb! */ } |