+ return r;
+}
+
+int unit_kill_context(
+ Unit *u,
+ KillContext *c,
+ bool sigkill,
+ pid_t main_pid,
+ pid_t control_pid,
+ bool main_pid_alien) {
+
+ int sig, wait_for_exit = 0, r;
+
+ assert(u);
+ assert(c);
+
+ if (c->kill_mode == KILL_NONE)
+ return 0;
+
+ sig = sigkill ? SIGKILL : c->kill_signal;
+
+ if (main_pid > 0) {
+ r = kill_and_sigcont(main_pid, sig);
+
+ if (r < 0 && r != -ESRCH) {
+ _cleanup_free_ char *comm = NULL;
+ get_process_comm(main_pid, &comm);
+
+ log_warning_unit(u->id, "Failed to kill main process %li (%s): %s",
+ (long) main_pid, strna(comm), strerror(-r));
+ } else
+ wait_for_exit = !main_pid_alien;
+ }
+
+ if (control_pid > 0) {
+ r = kill_and_sigcont(control_pid, sig);
+
+ if (r < 0 && r != -ESRCH) {
+ _cleanup_free_ char *comm = NULL;
+ get_process_comm(control_pid, &comm);
+
+ log_warning_unit(u->id,
+ "Failed to kill control process %li (%s): %s",
+ (long) control_pid, strna(comm), strerror(-r));
+ } else
+ wait_for_exit = true;
+ }
+
+ if (c->kill_mode == KILL_CONTROL_GROUP && u->cgroup_path) {
+ _cleanup_set_free_ Set *pid_set = NULL;
+
+ pid_set = set_new(trivial_hash_func, trivial_compare_func);
+ if (!pid_set)
+ return -ENOMEM;
+
+ /* Exclude the main/control pids from being killed via the cgroup */
+ if (main_pid > 0) {
+ r = set_put(pid_set, LONG_TO_PTR(main_pid));
+ if (r < 0)
+ return r;
+ }
+
+ if (control_pid > 0) {
+ r = set_put(pid_set, LONG_TO_PTR(control_pid));
+ if (r < 0)
+ return r;
+ }
+
+ r = cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, sig, true, true, false, pid_set);
+ if (r < 0) {
+ if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
+ log_warning_unit(u->id, "Failed to kill control group: %s", strerror(-r));
+ } else if (r > 0)
+ wait_for_exit = true;
+ }
+
+ return wait_for_exit;