#include "bus-errors.h"
#include "dbus-common.h"
#include "selinux-access.h"
+#include "cgroup-util.h"
+#include "strv.h"
+#include "path-util.h"
+#include "fileio.h"
const char bus_unit_interface[] _introspect_("Unit") = BUS_UNIT_INTERFACE;
static int bus_unit_append_job(DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
DBusMessageIter sub;
- char *p;
+ _cleanup_free_ char *p = NULL;
assert(i);
assert(property);
if (u->job) {
- if (!(p = job_dbus_path(u->job)))
+ p = job_dbus_path(u->job);
+ if (!p)
return -ENOMEM;
if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &u->job->id) ||
- !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
+ !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p))
return -ENOMEM;
- }
} else {
uint32_t id = 0;
* data. Since we need to fill in a valid path we
* simple point to ourselves. */
- if (!(p = unit_dbus_path(u)))
+ p = unit_dbus_path(u);
+ if (!p)
return -ENOMEM;
if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &id) ||
- !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
+ !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p))
return -ENOMEM;
- }
}
- free(p);
-
if (!dbus_message_iter_close_container(i, &sub))
return -ENOMEM;
assert(property);
assert(u);
- if ((cgb = unit_get_default_cgroup(u))) {
- if (!(t = cgroup_bonding_to_string(cgb)))
+ cgb = unit_get_default_cgroup(u);
+ if (cgb) {
+ t = cgroup_bonding_to_string(cgb);
+ if (!t)
return -ENOMEM;
} else
t = (char*) "";
return -ENOMEM;
LIST_FOREACH(by_unit, cgb, u->cgroup_bondings) {
- char *t;
+ char _cleanup_free_ *t = NULL;
bool success;
- if (!(t = cgroup_bonding_to_string(cgb)))
+ t = cgroup_bonding_to_string(cgb);
+ if (!t)
return -ENOMEM;
success = dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t);
- free(t);
-
if (!success)
return -ENOMEM;
}
return -ENOMEM;
LIST_FOREACH(by_unit, a, u->cgroup_attributes) {
- char *v = NULL;
+ char _cleanup_free_ *v = NULL;
bool success;
- if (a->map_callback)
- a->map_callback(a->controller, a->name, a->value, &v);
+ if (a->semantics && a->semantics->map_write)
+ a->semantics->map_write(a->semantics, a->value, &v);
success =
dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2) &&
dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &a->name) &&
dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, v ? &v : &a->value) &&
dbus_message_iter_close_container(&sub, &sub2);
-
- free(v);
-
if (!success)
return -ENOMEM;
}
}
static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusConnection *connection, DBusMessage *message) {
- DBusMessage *reply = NULL;
- Manager *m = u->manager;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
DBusError error;
JobType job_type = _JOB_TYPE_INVALID;
- char *path = NULL;
bool reload_if_possible = false;
int r;
dbus_error_init(&error);
- r = selinux_unit_access_check(
- connection,
- message,
- m,
- (u->fragment_path ? u->fragment_path: u->source_path),
- &error);
- if (r)
- return bus_send_error_reply(connection, message, &error, r);
-
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Start"))
job_type = JOB_START;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Stop"))
if (signo <= 0 || signo >= _NSIG)
return bus_send_error_reply(connection, message, &error, -EINVAL);
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "stop");
+
r = unit_kill(u, who, signo, &error);
if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ResetFailed")) {
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "reload");
+
unit_reset_failed(u);
- if (!(reply = dbus_message_new_method_return(message)))
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else if (streq_ptr(dbus_message_get_member(message), "SetControlGroup")) {
+ DBusMessageIter iter;
+
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "start");
+
+ if (!dbus_message_iter_init(message, &iter))
+ goto oom;
+
+ r = bus_unit_cgroup_set(u, &iter);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else if (streq_ptr(dbus_message_get_member(message), "UnsetControlGroup")) {
+ DBusMessageIter iter;
+
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "stop");
+
+ if (!dbus_message_iter_init(message, &iter))
+ goto oom;
+
+ r = bus_unit_cgroup_unset(u, &iter);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+ } else if (streq_ptr(dbus_message_get_member(message), "GetControlGroupAttribute")) {
+ DBusMessageIter iter;
+ _cleanup_strv_free_ char **list = NULL;
+
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "status");
+
+ if (!dbus_message_iter_init(message, &iter))
+ goto oom;
+
+ r = bus_unit_cgroup_attribute_get(u, &iter, &list);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ dbus_message_iter_init_append(reply, &iter);
+ if (bus_append_strv_iter(&iter, list) < 0)
+ goto oom;
+
+ } else if (streq_ptr(dbus_message_get_member(message), "SetControlGroupAttribute")) {
+ DBusMessageIter iter;
+
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "start");
+
+ if (!dbus_message_iter_init(message, &iter))
+ goto oom;
+
+ r = bus_unit_cgroup_attribute_set(u, &iter);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ } else if (streq_ptr(dbus_message_get_member(message), "UnsetControlGroupAttribute")) {
+ DBusMessageIter iter;
+
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "stop");
+
+ if (!dbus_message_iter_init(message, &iter))
+ goto oom;
+
+ r = bus_unit_cgroup_attribute_unset(u, &iter);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, NULL, r);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
goto oom;
} else if (UNIT_VTABLE(u)->bus_message_handler)
if (job_type != _JOB_TYPE_INVALID) {
const char *smode;
JobMode mode;
- Job *j;
-
- if ((job_type == JOB_START && u->refuse_manual_start) ||
- (job_type == JOB_STOP && u->refuse_manual_stop) ||
- ((job_type == JOB_RESTART || job_type == JOB_TRY_RESTART) &&
- (u->refuse_manual_start || u->refuse_manual_stop))) {
- dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY, "Operation refused, may be requested by dependency only.");
- return bus_send_error_reply(connection, message, &error, -EPERM);
- }
if (!dbus_message_get_args(
message,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
- if (reload_if_possible && unit_can_reload(u)) {
- if (job_type == JOB_RESTART)
- job_type = JOB_RELOAD_OR_START;
- else if (job_type == JOB_TRY_RESTART)
- job_type = JOB_RELOAD;
- }
-
- if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID) {
+ mode = job_mode_from_string(smode);
+ if (mode < 0) {
dbus_set_error(&error, BUS_ERROR_INVALID_JOB_MODE, "Job mode %s is invalid.", smode);
return bus_send_error_reply(connection, message, &error, -EINVAL);
}
- if ((r = manager_add_job(m, job_type, u, mode, true, &error, &j)) < 0)
- return bus_send_error_reply(connection, message, &error, r);
-
- if (!(reply = dbus_message_new_method_return(message)))
- goto oom;
-
- if (!(path = job_dbus_path(j)))
- goto oom;
-
- if (!dbus_message_append_args(
- reply,
- DBUS_TYPE_OBJECT_PATH, &path,
- DBUS_TYPE_INVALID))
- goto oom;
+ return bus_unit_queue_job(connection, message, u, job_type, mode, reload_if_possible);
}
- if (reply) {
- if (!dbus_connection_send(connection, reply, NULL))
+ if (reply)
+ if (!bus_maybe_send_reply(connection, message, reply))
goto oom;
- dbus_message_unref(reply);
- }
-
- free(path);
-
return DBUS_HANDLER_RESULT_HANDLED;
oom:
- free(path);
-
- if (reply)
- dbus_message_unref(reply);
-
dbus_error_free(&error);
-
return DBUS_HANDLER_RESULT_NEED_MEMORY;
}
Manager *m = data;
Unit *u;
int r;
- DBusMessage *reply = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
DBusError error;
assert(connection);
if (streq(dbus_message_get_path(message), "/org/freedesktop/systemd1/unit")) {
/* Be nice to gdbus and return introspection data for our mid-level paths */
+ SELINUX_ACCESS_CHECK(connection, message, "status");
+
if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
char *introspection = NULL;
FILE *f;
const char *k;
size_t size;
- if (!(reply = dbus_message_new_method_return(message)))
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
goto oom;
/* We roll our own introspection code here, instead of
* need to generate our introspection string
* dynamically. */
- if (!(f = open_memstream(&introspection, &size)))
+ f = open_memstream(&introspection, &size);
+ if (!f)
goto oom;
fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
if (k != u->id)
continue;
- if (!(p = bus_path_escape(k))) {
+ p = bus_path_escape(k);
+ if (!p) {
fclose(f);
free(introspection);
goto oom;
free(introspection);
- if (!dbus_connection_send(connection, reply, NULL))
+ if (!bus_maybe_send_reply(connection, message, reply))
goto oom;
- dbus_message_unref(reply);
-
return DBUS_HANDLER_RESULT_HANDLED;
}
}
r = manager_load_unit_from_dbus_path(m, dbus_message_get_path(message), &error, &u);
- if (r < 0) {
- if (r == -ENOMEM)
- goto oom;
-
+ if (r == -ENOMEM)
+ goto oom;
+ if (r < 0)
return bus_send_error_reply(connection, message, &error, r);
- }
return bus_unit_message_dispatch(u, connection, message);
oom:
- if (reply)
- dbus_message_unref(reply);
-
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
};
void bus_unit_send_change_signal(Unit *u) {
- char *p = NULL;
- DBusMessage *m = NULL;
+ _cleanup_free_ char *p = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *m = NULL;
assert(u);
return;
}
- if (!(p = unit_dbus_path(u)))
+ p = unit_dbus_path(u);
+ if (!p)
goto oom;
if (u->sent_dbus_new_signal) {
if (UNIT_VTABLE(u)->bus_invalidating_properties) {
- if (!(m = bus_properties_changed_new(p,
- UNIT_VTABLE(u)->bus_interface,
- UNIT_VTABLE(u)->bus_invalidating_properties)))
+ m = bus_properties_changed_new(p,
+ UNIT_VTABLE(u)->bus_interface,
+ UNIT_VTABLE(u)->bus_invalidating_properties);
+ if (!m)
goto oom;
if (bus_broadcast(u->manager, m) < 0)
dbus_message_unref(m);
}
- if (!(m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Unit", INVALIDATING_PROPERTIES)))
+ m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Unit",
+ INVALIDATING_PROPERTIES);
+ if (!m)
goto oom;
} else {
/* Send a new signal */
- if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitNew")))
+ m = dbus_message_new_signal("/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "UnitNew");
+ if (!m)
goto oom;
if (!dbus_message_append_args(m,
if (bus_broadcast(u->manager, m) < 0)
goto oom;
- free(p);
- dbus_message_unref(m);
-
u->sent_dbus_new_signal = true;
return;
oom:
- free(p);
-
- if (m)
- dbus_message_unref(m);
-
- log_error("Failed to allocate unit change/new signal.");
+ log_oom();
}
void bus_unit_send_removed_signal(Unit *u) {
- char *p = NULL;
- DBusMessage *m = NULL;
+ _cleanup_free_ char *p = NULL;
+ _cleanup_dbus_message_unref_ DBusMessage *m = NULL;
assert(u);
if (!u->id)
return;
- if (!(p = unit_dbus_path(u)))
+ p = unit_dbus_path(u);
+ if (!p)
goto oom;
- if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitRemoved")))
+ m = dbus_message_new_signal("/org/freedesktop/systemd1",
+ "org.freedesktop.systemd1.Manager",
+ "UnitRemoved");
+ if (!m)
goto oom;
if (!dbus_message_append_args(m,
if (bus_broadcast(u->manager, m) < 0)
goto oom;
- free(p);
- dbus_message_unref(m);
-
return;
oom:
- free(p);
+ log_oom();
+}
+
+DBusHandlerResult bus_unit_queue_job(
+ DBusConnection *connection,
+ DBusMessage *message,
+ Unit *u,
+ JobType type,
+ JobMode mode,
+ bool reload_if_possible) {
+
+ _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
+ _cleanup_free_ char *path = NULL;
+ Job *j;
+ JobBusClient *cl;
+ DBusError error;
+ int r;
+
+ assert(connection);
+ assert(message);
+ assert(u);
+ assert(type >= 0 && type < _JOB_TYPE_MAX);
+ assert(mode >= 0 && mode < _JOB_MODE_MAX);
+
+ dbus_error_init(&error);
+
+ if (reload_if_possible && unit_can_reload(u)) {
+ if (type == JOB_RESTART)
+ type = JOB_RELOAD_OR_START;
+ else if (type == JOB_TRY_RESTART)
+ type = JOB_RELOAD;
+ }
+
+ SELINUX_UNIT_ACCESS_CHECK(u, connection, message,
+ (type == JOB_START || type == JOB_RESTART || type == JOB_TRY_RESTART) ? "start" :
+ type == JOB_STOP ? "stop" : "reload");
+
+ if (type == JOB_STOP && u->load_state == UNIT_ERROR && unit_active_state(u) == UNIT_INACTIVE) {
+ dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", u->id);
+ return bus_send_error_reply(connection, message, &error, -EPERM);
+ }
+
+ if ((type == JOB_START && u->refuse_manual_start) ||
+ (type == JOB_STOP && u->refuse_manual_stop) ||
+ ((type == JOB_RESTART || type == JOB_TRY_RESTART) && (u->refuse_manual_start || u->refuse_manual_stop))) {
+ dbus_set_error(&error, BUS_ERROR_ONLY_BY_DEPENDENCY,
+ "Operation refused, unit %s may be requested by dependency only.", u->id);
+ return bus_send_error_reply(connection, message, &error, -EPERM);
+ }
+
+ r = manager_add_job(u->manager, type, u, mode, true, &error, &j);
+ if (r < 0)
+ return bus_send_error_reply(connection, message, &error, r);
+
+ cl = job_bus_client_new(connection, bus_message_get_sender_with_fallback(message));
+ if (!cl)
+ goto oom;
+
+ LIST_PREPEND(JobBusClient, client, j->bus_client_list, cl);
+
+ reply = dbus_message_new_method_return(message);
+ if (!reply)
+ goto oom;
+
+ path = job_dbus_path(j);
+ if (!path)
+ goto oom;
+
+ if (!dbus_message_append_args(
+ reply,
+ DBUS_TYPE_OBJECT_PATH, &path,
+ DBUS_TYPE_INVALID))
+ goto oom;
+
+ if (!bus_maybe_send_reply(connection, message, reply))
+ goto oom;
+
+ return DBUS_HANDLER_RESULT_HANDLED;
+
+oom:
+ dbus_error_free(&error);
+
+ return DBUS_HANDLER_RESULT_NEED_MEMORY;
+}
+
+static int parse_mode(DBusMessageIter *iter, bool *runtime, bool next) {
+ const char *mode;
+ int r;
- if (m)
- dbus_message_unref(m);
+ assert(iter);
+ assert(runtime);
- log_error("Failed to allocate unit remove signal.");
+ r = bus_iter_get_basic_and_next(iter, DBUS_TYPE_STRING, &mode, next);
+ if (r < 0)
+ return r;
+
+ 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) {
+ _cleanup_free_ char *controller = NULL, *old_path = NULL, *new_path = NULL, *contents = NULL;
+ const char *name;
+ CGroupBonding *b;
+ bool runtime;
+ int r;
+
+ assert(u);
+ assert(iter);
+
+ if (!unit_get_exec_context(u))
+ return -EINVAL;
+
+ r = bus_iter_get_basic_and_next(iter, DBUS_TYPE_STRING, &name, true);
+ if (r < 0)
+ return r;
+
+ r = parse_mode(iter, &runtime, false);
+ if (r < 0)
+ return r;
+
+ r = cg_split_spec(name, &controller, &new_path);
+ if (r < 0)
+ return r;
+
+ if (!new_path) {
+ new_path = unit_default_cgroup_path(u);
+ if (!new_path)
+ return -ENOMEM;
+ }
+
+ if (!controller || streq(controller, SYSTEMD_CGROUP_CONTROLLER))
+ return -EINVAL;
+
+ b = cgroup_bonding_find_list(u->cgroup_bondings, controller);
+ if (b) {
+ if (streq(b->path, new_path))
+ return 0;
+
+ if (b->essential)
+ return -EINVAL;
+
+ 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) {
+ CGroupAttribute *a;
+
+ /* 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);
+
+ /* Apply the attributes to the new group */
+ LIST_FOREACH(by_unit, a, u->cgroup_attributes)
+ if (streq(a->controller, controller))
+ cgroup_attribute_apply(a, b);
+ }
+
+ contents = strjoin("[", UNIT_VTABLE(u)->exec_section, "]\n"
+ "ControlGroup=", name, "\n", NULL);
+ if (!contents)
+ return -ENOMEM;
+
+ return unit_write_drop_in(u, runtime, controller, contents);
+}
+
+int bus_unit_cgroup_unset(Unit *u, DBusMessageIter *iter) {
+ _cleanup_free_ char *controller = NULL, *path = NULL, *target = NULL;
+ const char *name;
+ CGroupAttribute *a, *n;
+ CGroupBonding *b;
+ bool runtime;
+ int r;
+
+ assert(u);
+ assert(iter);
+
+ if (!unit_get_exec_context(u))
+ return -EINVAL;
+
+ r = bus_iter_get_basic_and_next(iter, DBUS_TYPE_STRING, &name, true);
+ if (r < 0)
+ return r;
+
+ r = parse_mode(iter, &runtime, false);
+ if (r < 0)
+ return r;
+
+ r = cg_split_spec(name, &controller, &path);
+ if (r < 0)
+ return r;
+
+ if (!controller || streq(controller, SYSTEMD_CGROUP_CONTROLLER))
+ return -EINVAL;
+
+ b = cgroup_bonding_find_list(u->cgroup_bondings, controller);
+ if (!b)
+ return -ENOENT;
+
+ if (path && !path_equal(path, b->path))
+ return -ENOENT;
+
+ if (b->essential)
+ return -EINVAL;
+
+ unit_remove_drop_in(u, runtime, controller);
+
+ /* 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);
+
+ /* Drop all attributes of this controller */
+ LIST_FOREACH_SAFE(by_unit, a, n, u->cgroup_attributes) {
+ if (!streq(a->controller, controller))
+ continue;
+
+ unit_remove_drop_in(u, runtime, a->name);
+ cgroup_attribute_free(a);
+ }
+
+ return 0;
+}
+
+int bus_unit_cgroup_attribute_get(Unit *u, DBusMessageIter *iter, char ***_result) {
+ _cleanup_free_ char *controller = NULL;
+ CGroupAttribute *a;
+ CGroupBonding *b;
+ const char *name;
+ char **l = NULL;
+ int r;
+
+ assert(u);
+ assert(iter);
+ assert(_result);
+
+ if (!unit_get_exec_context(u))
+ return -EINVAL;
+
+ r = bus_iter_get_basic_and_next(iter, DBUS_TYPE_STRING, &name, false);
+ if (r < 0)
+ return r;
+
+ 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) {
+ /* Split on new lines */
+ l = strv_split_newlines(v);
+ if (!l)
+ return -ENOMEM;
+
+ *_result = l;
+ return 0;
+
+ }
+ }
+
+ /* If that didn't work, read our cached value */
+ LIST_FOREACH(by_unit, a, u->cgroup_attributes) {
+
+ if (!cgroup_attribute_matches(a, controller, name))
+ continue;
+
+ r = strv_extend(&l, a->value);
+ if (r < 0) {
+ strv_free(l);
+ return r;
+ }
+ }
+
+ if (!l)
+ return -ENOENT;
+
+ *_result = l;
+ return 0;
+}
+
+static int update_attribute_drop_in(Unit *u, bool runtime, const char *name) {
+ _cleanup_free_ char *buf = NULL;
+ CGroupAttribute *a;
+
+ assert(u);
+ assert(name);
+
+ LIST_FOREACH(by_unit, a, u->cgroup_attributes) {
+ if (!cgroup_attribute_matches(a, NULL, name))
+ continue;
+
+ if (!buf) {
+ buf = strjoin("[", UNIT_VTABLE(u)->exec_section, "]\n"
+ "ControlGroupAttribute=", a->name, " ", a->value, "\n", NULL);
+
+ if (!buf)
+ return -ENOMEM;
+ } else {
+ char *b;
+
+ b = strjoin(buf,
+ "ControlGroupAttribute=", a->name, " ", a->value, "\n", NULL);
+
+ if (!b)
+ return -ENOMEM;
+
+ free(buf);
+ buf = b;
+ }
+ }
+
+ if (buf)
+ return unit_write_drop_in(u, runtime, name, buf);
+ else
+ return unit_remove_drop_in(u, runtime, name);
+}
+
+int bus_unit_cgroup_attribute_set(Unit *u, DBusMessageIter *iter) {
+ _cleanup_strv_free_ char **l = NULL;
+ int r;
+ bool runtime = false;
+ char **value;
+ const char *name;
+
+ assert(u);
+ assert(iter);
+
+ if (!unit_get_exec_context(u))
+ return -EINVAL;
+
+ r = bus_iter_get_basic_and_next(iter, DBUS_TYPE_STRING, &name, true);
+ if (r < 0)
+ return r;
+
+ r = bus_parse_strv_iter(iter, &l);
+ if (r < 0)
+ return r;
+
+ if (!dbus_message_iter_next(iter))
+ return -EINVAL;
+
+ r = parse_mode(iter, &runtime, false);
+ if (r < 0)
+ return r;
+
+ STRV_FOREACH(value, l) {
+ _cleanup_free_ char *v = NULL;
+ CGroupAttribute *a;
+ const CGroupSemantics *s;
+
+ r = cgroup_semantics_find(NULL, name, *value, &v, &s);
+ if (r < 0)
+ return r;
+
+ if (s && !s->multiple && l[1])
+ return -EINVAL;
+
+ r = unit_add_cgroup_attribute(u, s, NULL, name, v ? v : *value, &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);
+ }
+
+ }
+
+ r = update_attribute_drop_in(u, runtime, name);
+ if (r < 0)
+ return r;
+
+ return 0;
+}
+
+int bus_unit_cgroup_attribute_unset(Unit *u, DBusMessageIter *iter) {
+ const char *name;
+ bool runtime;
+ int r;
+
+ assert(u);
+ assert(iter);
+
+ if (!unit_get_exec_context(u))
+ return -EINVAL;
+
+ r = bus_iter_get_basic_and_next(iter, DBUS_TYPE_STRING, &name, true);
+ if (r < 0)
+ return r;
+
+ r = parse_mode(iter, &runtime, false);
+ if (r < 0)
+ return r;
+
+ cgroup_attribute_free_some(u->cgroup_attributes, NULL, name);
+ update_attribute_drop_in(u, runtime, name);
+
+ return 0;
}
const BusProperty bus_unit_properties[] = {
{ "OnFailureIsolate", bus_property_append_bool, "b", offsetof(Unit, on_failure_isolate) },
{ "IgnoreOnIsolate", bus_property_append_bool, "b", offsetof(Unit, ignore_on_isolate) },
{ "IgnoreOnSnapshot", bus_property_append_bool, "b", offsetof(Unit, ignore_on_snapshot) },
- { "DefaultControlGroup", bus_unit_append_default_cgroup, "s", 0 },
- { "ControlGroup", bus_unit_append_cgroups, "as", 0 },
- { "ControlGroupAttributes", bus_unit_append_cgroup_attrs,"a(sss)", 0 },
{ "NeedDaemonReload", bus_unit_append_need_daemon_reload, "b", 0 },
{ "JobTimeoutUSec", bus_property_append_usec, "t", offsetof(Unit, job_timeout) },
{ "ConditionTimestamp", bus_property_append_usec, "t", offsetof(Unit, condition_timestamp.realtime) },
{ "LoadError", bus_unit_append_load_error, "(ss)", 0 },
{ NULL, }
};
+
+const BusProperty bus_unit_cgroup_properties[] = {
+ { "DefaultControlGroup", bus_unit_append_default_cgroup, "s", 0 },
+ { "ControlGroups", bus_unit_append_cgroups, "as", 0 },
+ { "ControlGroupAttributes", bus_unit_append_cgroup_attrs, "a(sss)", 0 },
+ { NULL, }
+};
~ianmdlvl / elogind.git / blobdiff