Brett Neumeier schrob:
> 2. patch QEMU to add a signal handler so that it will gracefully
> shutdown when it receives a specific signal (and then tell s6 to use
> that signal to take the service down); or
A patch to do that has been available since 2017 at least, but the qemu
developers apparently can't agree to any signal to use. See
https://patchwork.kernel.org/project/qemu-devel/patch/23d89ab3bd16ebf7a864ab75c300de7b_at_whitewinterwolf.com/
and
https://gitlab.com/qemu-project/qemu/-/issues/148 .
Here's a current version with SIGPWR.
HTH,
Jan
diff --git a/os-posix.c b/os-posix.c
index 43f9a43f3..55fb3999a 100644
--- a/os-posix.c
+++ b/os-posix.c
_at__at_ -64,6 +64,9 _at__at_ void os_setup_signal_handling(void)
sigaction(SIGINT, &act, NULL);
sigaction(SIGHUP, &act, NULL);
sigaction(SIGTERM, &act, NULL);
+#ifdef SIGPWR
+ sigaction(SIGPWR, &act, NULL);
+#endif
}
void os_set_proc_name(const char *s)
diff --git a/system/runstate.c b/system/runstate.c
index c833316f6..a75c10aa6 100644
--- a/system/runstate.c
+++ b/system/runstate.c
_at__at_ -680,8 +680,18 _at__at_ void qemu_system_killed(int signal, pid_t pid)
/* Cannot call qemu_system_shutdown_request directly because
* we are in a signal handler.
*/
- shutdown_requested = SHUTDOWN_CAUSE_HOST_SIGNAL;
- qemu_notify_event();
+#ifdef SIGPWR
+ if (signal==SIGPWR)
+ {
+ powerdown_requested = 1;
+ qemu_notify_event();
+ }
+ else
+#endif
+ {
+ shutdown_requested = SHUTDOWN_CAUSE_HOST_SIGNAL;
+ qemu_notify_event();
+ }
}
void qemu_system_shutdown_request_with_code(ShutdownCause reason,
Received on Mon Jul 29 2024 - 19:29:45 CEST