-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
return 0;
}
-int cgroup_bonding_kill(CGroupBonding *b, int sig) {
+int cgroup_bonding_kill(CGroupBonding *b, int sig, Set *s) {
int r;
assert(b);
assert(b->realized);
- return cg_kill_recursive(b->controller, b->path, sig, true, false);
+ return cg_kill_recursive(b->controller, b->path, sig, true, false, s);
}
-int cgroup_bonding_kill_list(CGroupBonding *first, int sig) {
+int cgroup_bonding_kill_list(CGroupBonding *first, int sig, Set *s) {
CGroupBonding *b;
- int r = -EAGAIN;
+ Set *allocated_set = NULL;
+ int ret = -EAGAIN, r;
+
+ if (!s)
+ if (!(s = allocated_set = set_new(trivial_hash_func, trivial_compare_func)))
+ return -ENOMEM;
LIST_FOREACH(by_unit, b, first) {
- if ((r = cgroup_bonding_kill(b, sig)) < 0) {
+ if ((r = cgroup_bonding_kill(b, sig, s)) < 0) {
if (r == -EAGAIN || r == -ESRCH)
continue;
- return r;
+ ret = r;
+ goto finish;
}
- return 0;
+ if (ret < 0 || r > 0)
+ ret = r;
}
- return r;
+finish:
+ if (allocated_set)
+ set_free(allocated_set);
+
+ return ret;
}
/* Returns 1 if the group is empty, 0 if it is not, -EAGAIN if we
} else {
/* We need a new root cgroup */
m->cgroup_hierarchy = NULL;
- if ((r = asprintf(&m->cgroup_hierarchy, "%s%s", streq(current, "/") ? "" : current, suffix)) < 0) {
+ if (asprintf(&m->cgroup_hierarchy, "%s%s", streq(current, "/") ? "" : current, suffix) < 0) {
r = -ENOMEM;
goto finish;
}
log_debug("Using cgroup controller " SYSTEMD_CGROUP_CONTROLLER ". File system hierarchy is at %s.", path);
/* 3. Install agent */
- if ((r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, CGROUP_AGENT_PATH)) < 0)
+ if ((r = cg_install_release_agent(SYSTEMD_CGROUP_CONTROLLER, SYSTEMD_CGROUP_AGENT_PATH)) < 0)
log_warning("Failed to install release agent, ignoring: %s", strerror(-r));
else if (r > 0)
log_debug("Installed release agent.");
Unit* cgroup_unit_by_pid(Manager *m, pid_t pid) {
CGroupBonding *l, *b;
char *group = NULL;
- int r;
assert(m);
if (pid <= 1)
return NULL;
- if ((r = cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &group)))
+ if (cg_get_by_pid(SYSTEMD_CGROUP_CONTROLLER, pid, &group) < 0)
return NULL;
l = hashmap_get(m->cgroup_bondings, group);
+
+ if (!l) {
+ char *slash;
+
+ while ((slash = strrchr(group, '/'))) {
+ if (slash == group)
+ break;
+
+ *slash = 0;
+
+ if ((l = hashmap_get(m->cgroup_bondings, group)))
+ break;
+ }
+ }
+
free(group);
LIST_FOREACH(by_path, b, l) {
return r;
}
+
+pid_t cgroup_bonding_search_main_pid(CGroupBonding *b) {
+ FILE *f;
+ pid_t pid = 0, npid;
+ int r;
+
+ assert(b);
+
+ if (!b->only_us)
+ return 0;
+
+ if ((r = cg_enumerate_processes(b->controller, b->path, &f)) < 0)
+ return 0;
+
+ while ((r = cg_read_pid(f, &npid)) > 0) {
+
+ if (npid == pid)
+ continue;
+
+ if (pid != 0) {
+ /* Dang, there's more than one PID in this
+ * group, so we don't know what process is the
+ * main process. */
+ pid = 0;
+ break;
+ }
+
+ pid = npid;
+ }
+
+ fclose(f);
+
+ return pid;
+}
+
+pid_t cgroup_bonding_search_main_pid_list(CGroupBonding *first) {
+ CGroupBonding *b;
+ pid_t pid;
+
+ /* Try to find a main pid from this cgroup, but checking if
+ * there's only one PID in the cgroup and returning it. Later
+ * on we might want to add additional, smarter heuristics
+ * here. */
+
+ LIST_FOREACH(by_unit, b, first)
+ if ((pid = cgroup_bonding_search_main_pid(b)) != 0)
+ return pid;
+
+ return 0;
+
+}