-static int next_and_parse_mode(DBusMessageIter *iter, bool *runtime) {
- const char *mode;
-
- assert(iter);
- assert(runtime);
-
- dbus_message_iter_next(iter);
- if (dbus_message_iter_get_arg_type(iter) != DBUS_TYPE_STRING)
- return -EINVAL;
-
- dbus_message_iter_get_basic(iter, &mode);
- if (streq(mode, "runtime"))
- *runtime = true;
- else if (streq(mode, "persistent"))
- *runtime = false;
- else
- return -EINVAL;
-
- return 0;
-}
-
-int bus_unit_cgroup_set(Unit *u, DBusMessageIter *iter) {
- int r;
- _cleanup_strv_free_ char **a = NULL;
- char **name;
- bool runtime;
-
- assert(u);
- assert(iter);
-
- if (!unit_get_exec_context(u))
- return -EINVAL;
-
- r = bus_parse_strv_iter(iter, &a);
- if (r < 0)
- return r;
-
- r = next_and_parse_mode(iter, &runtime);
- if (r < 0)
- return r;
-
- STRV_FOREACH(name, a) {
- _cleanup_free_ char *controller = NULL, *old_path = NULL, *new_path = NULL, *contents = NULL;
- CGroupBonding *b;
-
- r = cg_split_spec(*name, &controller, &new_path);
- if (r < 0)
- return r;
-
- b = cgroup_bonding_find_list(u->cgroup_bondings, controller);
- if (b) {
- old_path = strdup(b->path);
- if (!old_path)
- return -ENOMEM;
- }
-
- r = unit_add_cgroup_from_text(u, *name, true, &b);
- if (r < 0)
- return r;
-
- if (r > 0) {
- /* Try to move things to the new place, and clean up the old place */
- cgroup_bonding_realize(b);
- cgroup_bonding_migrate(b, u->cgroup_bondings);
-
- if (old_path)
- cg_trim(controller, old_path, true);
- }
-
- contents = strjoin("[", UNIT_VTABLE(u)->exec_section, "]\n"
- "ControlGroup=", *name, "\n", NULL);
- if (!contents)
- return -ENOMEM;
-
- r = unit_write_drop_in(u, runtime, *name, contents);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-int bus_unit_cgroup_unset(Unit *u, DBusMessageIter *iter) {
- _cleanup_strv_free_ char **a = NULL;
- char **name;
- int r;
- bool runtime;
-
- assert(u);
- assert(iter);
-
- if (!unit_get_exec_context(u))
- return -EINVAL;
-
- r = bus_parse_strv_iter(iter, &a);
- if (r < 0)
- return r;
-
- r = next_and_parse_mode(iter, &runtime);
- if (r < 0)
- return r;
-
- STRV_FOREACH(name, a) {
- _cleanup_free_ char *controller = NULL, *path = NULL, *target = NULL;
- CGroupBonding *b;
-
- r = cg_split_spec(*name, &controller, &path);
- if (r < 0)
- return r;
-
- if (!controller || streq(controller, SYSTEMD_CGROUP_CONTROLLER))
- return -EINVAL;
-
- unit_remove_drop_in(u, runtime, *name);
-
- b = cgroup_bonding_find_list(u->cgroup_bondings, controller);
- if (!b)
- continue;
-
- if (path && !path_equal(path, b->path))
- continue;
-
- if (b->essential)
- return -EINVAL;
-
- /* Try to migrate the old group away */
- if (cg_get_by_pid(controller, 0, &target) >= 0)
- cgroup_bonding_migrate_to(u->cgroup_bondings, target, false);
-
- cgroup_bonding_free(b, true);
- }
-
- return 0;
-}
-
-int bus_unit_cgroup_attribute_get(Unit *u, DBusMessageIter *iter, char ***_result) {
- _cleanup_strv_free_ char **l = NULL, **result = NULL;
- char **name;
- int r;
-
- assert(u);
- assert(iter);
- assert(_result);
-
- if (!unit_get_exec_context(u))
- return -EINVAL;
-
- r = bus_parse_strv_iter(iter, &l);
- if (r < 0)
- return r;
-
- STRV_FOREACH(name, l) {
- _cleanup_free_ char *controller = NULL;
- CGroupAttribute *a;
- CGroupBonding *b;
-
- r = cg_controller_from_attr(*name, &controller);
- if (r < 0)
- return r;
-
- /* First attempt, read the value from the kernel */
- b = cgroup_bonding_find_list(u->cgroup_bondings, controller);
- if (b) {
- _cleanup_free_ char *p = NULL, *v = NULL;
-
- r = cg_get_path(b->controller, b->path, *name, &p);
- if (r < 0)
- return r;
-
- r = read_full_file(p, &v, NULL);
- if (r >= 0) {
- r = strv_extend(&result, v);
- if (r < 0)
- return r;
-
- continue;
- } else if (r != -ENOENT)
- return r;
- }
-
- /* If that didn't work, read our cached value */
- a = cgroup_attribute_find_list(u->cgroup_attributes, NULL, *name);
- if (a) {
- r = strv_extend(&result, a->value);
- if (r < 0)
- return r;
-
- continue;
- }
-
- return -ENOENT;
- }
-
- *_result = result;
- result = NULL;
-
- return 0;
-}
-
-int bus_unit_cgroup_attribute_set(Unit *u, DBusMessageIter *iter) {
- _cleanup_strv_free_ char **l = NULL;
- int r;
- bool runtime = false;
- char **name, **value;
-
- assert(u);
- assert(iter);
-
- if (!unit_get_exec_context(u))
- return -EINVAL;
-
- r = bus_parse_strv_pairs_iter(iter, &l);
- if (r < 0)
- return r;
-
- r = next_and_parse_mode(iter, &runtime);
- if (r < 0)
- return r;
-
- STRV_FOREACH_PAIR(name, value, l) {
- _cleanup_free_ char *contents = NULL;
- CGroupAttribute *a;
-
- r = unit_add_cgroup_attribute(u, NULL, *name, *value, NULL, &a);
- if (r < 0)
- return r;
-
- if (r > 0) {
- CGroupBonding *b;
-
- b = cgroup_bonding_find_list(u->cgroup_bondings, a->controller);
- if (!b) {
- /* Doesn't exist yet? Then let's add it */
- r = unit_add_cgroup_from_text(u, a->controller, false, &b);
- if (r < 0)
- return r;
-
- if (r > 0) {
- cgroup_bonding_realize(b);
- cgroup_bonding_migrate(b, u->cgroup_bondings);
- }
- }
-
- /* Make it count */
- cgroup_attribute_apply(a, u->cgroup_bondings);
- }
-
- contents = strjoin("[", UNIT_VTABLE(u)->exec_section, "]\n"
- "ControlGroupAttribute=", *name, " ", *value, "\n", NULL);
- if (!contents)
- return -ENOMEM;
-
- r = unit_write_drop_in(u, runtime, *name, contents);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-int bus_unit_cgroup_attribute_unset(Unit *u, DBusMessageIter *iter) {
- _cleanup_strv_free_ char **l = NULL;
- char **name;
- bool runtime;
- int r;
-
- assert(u);
- assert(iter);
-
- if (!unit_get_exec_context(u))
- return -EINVAL;
-
- r = bus_parse_strv_iter(iter, &l);
- if (r < 0)
- return r;
-
- r = next_and_parse_mode(iter, &runtime);
- if (r < 0)
- return r;
-
- STRV_FOREACH(name, l) {
- CGroupAttribute *a;
-
- a = cgroup_attribute_find_list(u->cgroup_attributes, NULL, *name);
- if (a)
- cgroup_attribute_free(a);
-
- unit_remove_drop_in(u, runtime, *name);
- }
-
- return 0;
-}
-