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core: when the user hits Ctrl-Alt-Del more than 7x per 2s, reboot immediately 

This should be useful for cases where clean rebooting doesn't work, and
the user wants to hurry up the reboot.
This commit is contained in:
Lennart Poettering 2015-01-28 02:18:59 +01:00
parent a986501b90
commit 2e5c94b9aa
3 changed files with 23 additions and 5 deletions
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16
src/core/manager.c
View File

@ -549,6 +549,9 @@ int manager_new(SystemdRunningAs running_as, bool test_run, Manager **_m) {
m->test_run = test_run;
/* Reboot immediately if the user hits C-A-D more often than 7x per 2s */
RATELIMIT_INIT(m->ctrl_alt_del_ratelimit, 2 * USEC_PER_SEC, 7);
r = manager_default_environment(m);
if (r < 0)
goto fail;
@ -1721,7 +1724,18 @@ static int manager_dispatch_signal_fd(sd_event_source *source, int fd, uint32_t
case SIGINT:
if (m->running_as == SYSTEMD_SYSTEM) {
manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
/* If the user presses C-A-D too more
* than 7 times within 2s, we reboot
* immediately. */
if (ratelimit_test(&m->ctrl_alt_del_ratelimit))
manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE_IRREVERSIBLY);
else {
log_notice("Ctrl-Alt-Del was pressed more than 7 times within 2s, rebooting immediately.");
m->exit_code = MANAGER_REBOOT;
}
break;
}

10
src/core/manager.h
View File

@ -29,6 +29,10 @@
#include "sd-event.h"
#include "fdset.h"
#include "cgroup-util.h"
#include "hashmap.h"
#include "list.h"
#include "set.h"
#include "ratelimit.h"
/* Enforce upper limit how many names we allow */
#define MANAGER_MAX_NAMES 131072 /* 128K */
@ -68,9 +72,6 @@ typedef enum StatusType {
#include "unit.h"
#include "job.h"
#include "hashmap.h"
#include "list.h"
#include "set.h"
#include "path-lookup.h"
#include "execute.h"
#include "unit-name.h"
@ -295,6 +296,9 @@ struct Manager {
/* Used for processing polkit authorization responses */
Hashmap *polkit_registry;
/* When the user hits C-A-D more than 7 times per 2s, reboot immediately... */
RateLimit ctrl_alt_del_ratelimit;
};
int manager_new(SystemdRunningAs running_as, bool test_run, Manager **m);

2
src/core/unit-printf.c
View File

@ -19,7 +19,7 @@
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include "systemd/sd-id128.h"
#include "sd-id128.h"
#include "unit.h"
#include "specifier.h"
#include "path-util.h"