diff options
Diffstat (limited to 'src/swap.c')
| -rw-r--r-- | src/swap.c | 49 |
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, |