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| author | Bogdan Purcareata | 2013-11-26 13:54:48 +0100 |
|---|---|---|
| committer | Denys Vlasenko | 2013-11-26 13:54:48 +0100 |
| commit | 760fc6debcba8cb5ca8d8e2252fac3757c453e11 (patch) | |
| tree | fde19f0e554fd9839a3cfcd2cb20385f6e77c24b | |
| parent | cffe28ef876a6fe8a8154321bf5feb409d87cf1a (diff) | |
| download | busybox-760fc6debcba8cb5ca8d8e2252fac3757c453e11.zip busybox-760fc6debcba8cb5ca8d8e2252fac3757c453e11.tar.gz | |
init: halt on SIGPWR too
Most init processes implement a handler for SIGPWR that gracefully
stops all child processes when shutting down a machine. Some other
technologies rely on this signal - e.g. Busybox powered LXC
containers.
This patch makes busybox init halt when receiving SIGPWR.
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
| -rw-r--r-- | init/init.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/init/init.c b/init/init.c index c63bba1..d29328c 100644 --- a/init/init.c +++ b/init/init.c @@ -789,7 +789,7 @@ static void run_shutdown_and_kill_processes(void) * and only one will be remembered and acted upon. */ -/* The SIGUSR[12]/SIGTERM handler */ +/* The SIGPWR/SIGUSR[12]/SIGTERM handler */ static void halt_reboot_pwoff(int sig) NORETURN; static void halt_reboot_pwoff(int sig) { @@ -1103,8 +1103,8 @@ int init_main(int argc UNUSED_PARAM, char **argv) /* NOTE that if CONFIG_FEATURE_USE_INITTAB is NOT defined, * then parse_inittab() simply adds in some default - * actions(i.e., INIT_SCRIPT and a pair - * of "askfirst" shells */ + * actions (i.e., INIT_SCRIPT and a pair + * of "askfirst" shells) */ parse_inittab(); } @@ -1135,6 +1135,7 @@ int init_main(int argc UNUSED_PARAM, char **argv) struct sigaction sa; bb_signals(0 + + (1 << SIGPWR) /* halt */ + (1 << SIGUSR1) /* halt */ + (1 << SIGTERM) /* reboot */ + (1 << SIGUSR2) /* poweroff */ |