diff options
| author | Gleb Natapov <gleb@redhat.com> | 2011-03-15 13:56:04 +0200 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2011-03-26 12:54:42 +0000 |
| commit | f64622c401d4975a56b8559e16286231a1d2cfb8 (patch) | |
| tree | 20912e758f2b1a3be545af99215ef8a7276ac466 | |
| parent | bf6b87a883f4067574764acb76024e34abba4aad (diff) | |
report that QEMU process was killed by a signal
Currently when rogue script kills QEMU process (using TERM/INT/HUP
signal) it looks indistinguishable from system shutdown. Lets report
that QEMU was killed and leave some clues about the killer identity.
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
| -rw-r--r-- | os-posix.c | 7 | ||||
| -rw-r--r-- | sysemu.h | 2 | ||||
| -rw-r--r-- | vl.c | 20 |
3 files changed, 25 insertions, 4 deletions
diff --git a/os-posix.c b/os-posix.c index 7971f8620b..eb49e2f177 100644 --- a/os-posix.c +++ b/os-posix.c @@ -62,9 +62,9 @@ void os_setup_early_signal_handling(void) sigaction(SIGPIPE, &act, NULL); } -static void termsig_handler(int signal) +static void termsig_handler(int signal, siginfo_t *info, void *c) { - qemu_system_shutdown_request(); + qemu_system_killed(info->si_signo, info->si_pid); } static void sigchld_handler(int signal) @@ -77,7 +77,8 @@ void os_setup_signal_handling(void) struct sigaction act; memset(&act, 0, sizeof(act)); - act.sa_handler = termsig_handler; + act.sa_sigaction = termsig_handler; + act.sa_flags = SA_SIGINFO; sigaction(SIGINT, &act, NULL); sigaction(SIGHUP, &act, NULL); sigaction(SIGTERM, &act, NULL); @@ -66,6 +66,8 @@ void qemu_system_vmstop_request(int reason); int qemu_shutdown_requested(void); int qemu_reset_requested(void); int qemu_powerdown_requested(void); +void qemu_system_killed(int signal, pid_t pid); +void qemu_kill_report(void); extern qemu_irq qemu_system_powerdown; void qemu_system_reset(void); @@ -1215,7 +1215,8 @@ typedef struct QEMUResetEntry { static QTAILQ_HEAD(reset_handlers, QEMUResetEntry) reset_handlers = QTAILQ_HEAD_INITIALIZER(reset_handlers); static int reset_requested; -static int shutdown_requested; +static int shutdown_requested, shutdown_signal = -1; +static pid_t shutdown_pid; static int powerdown_requested; static int debug_requested; static int vmstop_requested; @@ -1227,6 +1228,15 @@ int qemu_shutdown_requested(void) return r; } +void qemu_kill_report(void) +{ + if (shutdown_signal != -1) { + fprintf(stderr, "Got signal %d from pid %d\n", + shutdown_signal, shutdown_pid); + shutdown_signal = -1; + } +} + int qemu_reset_requested(void) { int r = reset_requested; @@ -1300,6 +1310,13 @@ void qemu_system_reset_request(void) qemu_notify_event(); } +void qemu_system_killed(int signal, pid_t pid) +{ + shutdown_signal = signal; + shutdown_pid = pid; + qemu_system_shutdown_request(); +} + void qemu_system_shutdown_request(void) { shutdown_requested = 1; @@ -1443,6 +1460,7 @@ static void main_loop(void) vm_stop(VMSTOP_DEBUG); } if (qemu_shutdown_requested()) { + qemu_kill_report(); monitor_protocol_event(QEVENT_SHUTDOWN, NULL); if (no_shutdown) { vm_stop(VMSTOP_SHUTDOWN); |