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authorLennart Poettering <lennart@poettering.net>2010-10-22 16:11:50 +0200
committerLennart Poettering <lennart@poettering.net>2010-10-22 16:11:50 +0200
commit8a0867d6c5b47c8697d1ddd815116a548433c718 (patch)
tree56c81885c60e6b23f543d82c91a901d2fde14791 /src/swap.c
parent95e501f8ab28e1645453219523c0263754db3f68 (diff)
systemctl: introduce systemctl kill
Diffstat (limited to 'src/swap.c')
-rw-r--r--src/swap.c49
1 files changed, 49 insertions, 0 deletions
diff --git a/src/swap.c b/src/swap.c
index cf9644fc69..f7f9530a03 100644
--- a/src/swap.c
+++ b/src/swap.c
@@ -35,6 +35,7 @@
#include "unit-name.h"
#include "dbus-swap.h"
#include "special.h"
+#include "bus-errors.h"
static const UnitActiveState state_translation_table[_SWAP_STATE_MAX] = {
[SWAP_DEAD] = UNIT_INACTIVE,
@@ -1213,6 +1214,52 @@ static void swap_reset_failed(Unit *u) {
s->failure = false;
}
+static int swap_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
+ Swap *s = SWAP(u);
+ int r = 0;
+ Set *pid_set = NULL;
+
+ assert(s);
+
+ if (who == KILL_MAIN) {
+ dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Swap units have no main processes");
+ return -EINVAL;
+ }
+
+ if (s->control_pid <= 0 && who == KILL_CONTROL) {
+ dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
+ return -ENOENT;
+ }
+
+ if (s->control_pid > 0)
+ if (kill(mode == KILL_PROCESS_GROUP ? -s->control_pid : s->control_pid, signo) < 0)
+ r = -errno;
+
+ if (mode == KILL_CONTROL_GROUP) {
+ int q;
+
+ if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
+ return -ENOMEM;
+
+ /* Exclude the control pid from being killed via the cgroup */
+ if (s->control_pid > 0)
+ if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
+ r = q;
+ goto finish;
+ }
+
+ if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, pid_set)) < 0)
+ if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
+ r = q;
+ }
+
+finish:
+ if (pid_set)
+ set_free(pid_set);
+
+ return r;
+}
+
static const char* const swap_state_table[_SWAP_STATE_MAX] = {
[SWAP_DEAD] = "dead",
[SWAP_ACTIVATING] = "activating",
@@ -1253,6 +1300,8 @@ const UnitVTable swap_vtable = {
.start = swap_start,
.stop = swap_stop,
+ .kill = swap_kill,
+
.serialize = swap_serialize,
.deserialize_item = swap_deserialize_item,