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Add support for sys/pwr/fail and sys/key/ctrlaltdel conditions

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This patch drops the default signal handlers for SIGPWR and SIGINT with
optional tasks in /etc/finit.conf, triggered by two new conditions:
sys/pwr/fail and sys/key/ctrlaltdel, respectively.

Signed-off-by: Joachim Wiberg <troglobit@gmail.com>
This commit is contained in:
Joachim Wiberg committed 2021-05-18 08:58:11 +02:00
1 parent e706300b6d
commit b79245ddb3
4 files changed
+41 -9
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src/sig.c
+21 -4
View File
@@ -311,7 +311,9 @@ static void sighup_cb(uev_t *w, void *arg, int events)
}
/*
* SIGINT: Should generate <sys/key/ctrlaltdel> condition, for now reboot
* SIGINT: generates <sys/key/ctrlaltdel> condition, which the sys.so
* plugin picks up and tells Finit to start any service(s) or
* task(s) associated with the condition.
*/
static void sigint_cb(uev_t *w, void *arg, int events)
{
@@ -321,8 +323,23 @@ static void sigint_cb(uev_t *w, void *arg, int events)
return;
}
halt = SHUT_REBOOT;
service_runlevel(6);
cond_set_oneshot_noupdate("sys/key/ctrlaltdel");
}
/*
* SIGPWR: generates <sys/pwr/fail> condition, which the sys.so plugin
* picks up and tells Finit to start any service(s) or task(s)
* associated with the condition.
*/
static void sigpwr_cb(uev_t *w, void *arg, int events)
{
_d("...");
if (UEV_ERROR == events) {
_e("Unrecoverable error in signal watcher");
return;
}
cond_set_oneshot_noupdate("sys/pwr/fail");
}
/*
@@ -531,7 +548,7 @@ void sig_setup(uev_ctx_t *ctx)
/* BusyBox/SysV init style signals for halt, power-off and reboot. */
uev_signal_init(ctx, &sigusr1_watcher, sigusr1_cb, NULL, SIGUSR1);
uev_signal_init(ctx, &sigusr2_watcher, sigusr2_cb, NULL, SIGUSR2);
uev_signal_init(ctx, &sigpwr_watcher, sigusr2_cb, NULL, SIGPWR);
uev_signal_init(ctx, &sigpwr_watcher, sigpwr_cb, NULL, SIGPWR);
uev_signal_init(ctx, &sigterm_watcher, sigterm_cb, NULL, SIGTERM);
/* Some C APIs may need SIGALRM for implementing timers. */