+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-
-#include "dbus.h"
-#include "log.h"
-#include "dbus-unit.h"
-
-int bus_unit_append_names(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- char *t;
- Iterator j;
- DBusMessageIter sub;
- Unit *u = data;
-
- if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))
- return -ENOMEM;
-
- SET_FOREACH(t, u->meta.names, j)
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t))
- return -ENOMEM;
-
- if (!dbus_message_iter_close_container(i, &sub))
- return -ENOMEM;
-
- return 0;
-}
-
-int bus_unit_append_dependencies(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u;
- Iterator j;
- DBusMessageIter sub;
- Set *s = data;
-
- if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))
- return -ENOMEM;
-
- SET_FOREACH(u, s, j)
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &u->meta.id))
- return -ENOMEM;
-
- if (!dbus_message_iter_close_container(i, &sub))
- return -ENOMEM;
-
- return 0;
-}
-
-int bus_unit_append_description(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- const char *d;
-
- assert(m);
- assert(i);
- assert(property);
- assert(u);
-
- d = unit_description(u);
-
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
- return -ENOMEM;
-
- return 0;
-}
-
-DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_load_state, unit_load_state, UnitLoadState);
-
-int bus_unit_append_active_state(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- const char *state;
-
- assert(m);
- assert(i);
- assert(property);
- assert(u);
-
- state = unit_active_state_to_string(unit_active_state(u));
-
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
- return -ENOMEM;
-
- return 0;
-}
-
-int bus_unit_append_sub_state(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- const char *state;
-
- assert(m);
- assert(i);
- assert(property);
- assert(u);
-
- state = unit_sub_state_to_string(u);
-
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
- return -ENOMEM;
-
- return 0;
-}
-
-int bus_unit_append_can_start(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- dbus_bool_t b;
-
- assert(m);
- assert(i);
- assert(property);
- assert(u);
-
- b = unit_can_start(u);
-
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
- return -ENOMEM;
-
- return 0;
-}
-
-int bus_unit_append_can_reload(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- dbus_bool_t b;
-
- assert(m);
- assert(i);
- assert(property);
- assert(u);
-
- b = unit_can_reload(u);
-
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
- return -ENOMEM;
-
- return 0;
-}
-
-int bus_unit_append_job(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- DBusMessageIter sub;
- char *p;
-
- assert(m);
- assert(i);
- assert(property);
- assert(u);
-
- if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
- return -ENOMEM;
-
- if (u->meta.job) {
-
- if (!(p = job_dbus_path(u->meta.job)))
- return -ENOMEM;
-
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &u->meta.job->id) ||
- !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
- return -ENOMEM;
- }
- } else {
- uint32_t id = 0;
-
- /* No job, so let's fill in some placeholder
- * data. Since we need to fill in a valid path we
- * simple point to ourselves. */
-
- if (!(p = unit_dbus_path(u)))
- 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);
- return -ENOMEM;
- }
- }
-
- free(p);
-
- if (!dbus_message_iter_close_container(i, &sub))
- return -ENOMEM;
-
- return 0;
-}
-
-int bus_unit_append_default_cgroup(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- char *t;
- CGroupBonding *cgb;
- bool success;
-
- assert(m);
- assert(i);
- assert(property);
- assert(u);
-
- if ((cgb = unit_get_default_cgroup(u))) {
- if (!(t = cgroup_bonding_to_string(cgb)))
- return -ENOMEM;
- } else
- t = (char*) "";
-
- success = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t);
-
- if (cgb)
- free(t);
-
- return success ? 0 : -ENOMEM;
-}
-
-int bus_unit_append_cgroups(Manager *m, DBusMessageIter *i, const char *property, void *data) {
- Unit *u = data;
- CGroupBonding *cgb;
- DBusMessageIter sub;
-
- if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "s", &sub))
- return -ENOMEM;
-
- LIST_FOREACH(by_unit, cgb, u->meta.cgroup_bondings) {
- char *t;
- bool success;
-
- if (!(t = cgroup_bonding_to_string(cgb)))
- return -ENOMEM;
-
- success = dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &t);
- free(t);
-
- if (!success)
- return -ENOMEM;
- }
-
- if (!dbus_message_iter_close_container(i, &sub))
- return -ENOMEM;
-
- return 0;
-}
-
-DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_kill_mode, kill_mode, KillMode);
-
-static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusMessage *message) {
- DBusMessage *reply = NULL;
- Manager *m = u->meta.manager;
- DBusError error;
- JobType job_type = _JOB_TYPE_INVALID;
-
- dbus_error_init(&error);
-
- 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"))
- job_type = JOB_STOP;
- else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Reload"))
- job_type = JOB_RELOAD;
- else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Restart"))
- job_type = JOB_RESTART;
- else if (UNIT_VTABLE(u)->bus_message_handler)
- return UNIT_VTABLE(u)->bus_message_handler(u, message);
- else
- return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-
- if (job_type != _JOB_TYPE_INVALID) {
- const char *smode;
- JobMode mode;
- Job *j;
- int r;
- char *path;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &smode,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(m, message, &error, -EINVAL);
-
- if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID)
- return bus_send_error_reply(m, message, NULL, -EINVAL);
-
- if ((r = manager_add_job(m, job_type, u, mode, true, &j)) < 0)
- return bus_send_error_reply(m, message, NULL, 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;
- }
-
- if (reply) {
- if (!dbus_connection_send(m->api_bus, reply, NULL))
- goto oom;
-
- dbus_message_unref(reply);
- }
-
- return DBUS_HANDLER_RESULT_HANDLED;
-
-oom:
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
-}
-
-static DBusHandlerResult bus_unit_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
- Manager *m = data;
- Unit *u;
- int r;
-
- assert(connection);
- assert(message);
- assert(m);
-
- log_debug("Got D-Bus request: %s.%s() on %s",
- dbus_message_get_interface(message),
- dbus_message_get_member(message),
- dbus_message_get_path(message));
-
- if ((r = manager_get_unit_from_dbus_path(m, dbus_message_get_path(message), &u)) < 0) {
-
- if (r == -ENOMEM)
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
-
- if (r == -ENOENT)
- return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
-
- return bus_send_error_reply(m, message, NULL, r);
- }
-
- return bus_unit_message_dispatch(u, message);
-}
-
-const DBusObjectPathVTable bus_unit_vtable = {
- .message_function = bus_unit_message_handler
-};
-
-void bus_unit_send_change_signal(Unit *u) {
- char *p = NULL;
- DBusMessage *m = NULL;
-
- assert(u);
- assert(u->meta.in_dbus_queue);
-
- LIST_REMOVE(Meta, dbus_queue, u->meta.manager->dbus_unit_queue, &u->meta);
- u->meta.in_dbus_queue = false;
-
- if (set_isempty(u->meta.manager->subscribed)) {
- u->meta.sent_dbus_new_signal = true;
- return;
- }
-
- if (!(p = unit_dbus_path(u)))
- goto oom;
-
- if (u->meta.sent_dbus_new_signal) {
- /* Send a change signal */
-
- if (!(m = dbus_message_new_signal(p, "org.freedesktop.systemd1.Unit", "Changed")))
- goto oom;
- } else {
- /* Send a new signal */
-
- if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitNew")))
- goto oom;
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, &u->meta.id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_INVALID))
- goto oom;
- }
-
- if (!dbus_connection_send(u->meta.manager->api_bus, m, NULL))
- goto oom;
-
- free(p);
- dbus_message_unref(m);
-
- u->meta.sent_dbus_new_signal = true;
-
- return;
-
-oom:
- free(p);
-
- if (m)
- dbus_message_unref(m);
-
- log_error("Failed to allocate unit change/new signal.");
-}
-
-void bus_unit_send_removed_signal(Unit *u) {
- char *p = NULL;
- DBusMessage *m = NULL;
-
- assert(u);
-
- if (set_isempty(u->meta.manager->subscribed) || !u->meta.sent_dbus_new_signal)
- return;
-
- if (!(p = unit_dbus_path(u)))
- goto oom;
-
- if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitRemoved")))
- goto oom;
-
- if (!dbus_message_append_args(m,
- DBUS_TYPE_STRING, &u->meta.id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_INVALID))
- goto oom;
-
- if (!dbus_connection_send(u->meta.manager->api_bus, m, NULL))
- goto oom;
-
- free(p);
- dbus_message_unref(m);
-
- return;
-
-oom:
- free(p);
-
- if (m)
- dbus_message_unref(m);
-
- log_error("Failed to allocate unit remove signal.");
-}
~ianmdlvl / elogind.git / blobdiff