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From 3ac4d1fc1a067afc0e0d4ca37a44ac252ee8b96b Mon Sep 17 00:00:00 2001
From: xujing <xujing99@huawei.com>
Date: Tue, 8 Feb 2022 21:02:31 +0800
Subject: [PATCH] shutdown: reboot when recieve crash signal
---
src/shutdown/shutdown.c | 33 +++++++++++++++++++++++++++++++++
1 file changed, 33 insertions(+)
diff --git a/src/shutdown/shutdown.c b/src/shutdown/shutdown.c
index d6beb2d..ed1ce93 100644
--- a/src/shutdown/shutdown.c
+++ b/src/shutdown/shutdown.c
@@ -321,6 +321,26 @@ static void bump_sysctl_printk_log_level(int min_level) {
log_debug_errno(r, "Failed to bump kernel.printk to %i: %m", min_level + 1);
}
+_noreturn_ static void crash(int sig) {
+ if (getpid_cached() != 1)
+ /* Pass this on immediately, if this is not PID 1 */
+ (void) raise(sig);
+ else {
+ bool in_container = detect_container() > 0;
+
+ log_info("Recieve signal %d.", sig);
+
+ broadcast_signal(SIGTERM, true, true, arg_timeout);
+ broadcast_signal(SIGKILL, true, false, arg_timeout);
+
+ if (!in_container)
+ sync_with_progress();
+
+ log_info("Rebooting now.");
+ (void) reboot(RB_AUTOBOOT);
+ }
+}
+
static void init_watchdog(void) {
const char *s;
int r;
@@ -355,6 +375,19 @@ int main(int argc, char *argv[]) {
usec_t now_time, time_interval;
pid_t pid;
bool fork_failed = false;
+ static const struct sigaction sa = {
+ .sa_handler = crash,
+ .sa_flags = SA_NODEFER, /* So that we can raise the signal again from the signal handler */
+ };
+
+ (void) reset_all_signal_handlers();
+ (void) ignore_signals(SIGNALS_IGNORE, -1);
+
+ /* We ignore the return value here, since, we don't mind if we
+ * cannot set up a crash handler */
+ r = sigaction_many(&sa, SIGNALS_CRASH_HANDLER, -1);
+ if (r < 0)
+ log_debug_errno(r, "I had trouble setting up the crash handler, ignoring: %m");
/* Close random fds we might have get passed, just for paranoia, before we open any new fds, for
* example for logging. After all this tool's purpose is about detaching any pinned resources, and
--
2.33.0
|
