diff options
Diffstat (limited to 'src/dbus-job.c')
| -rw-r--r-- | src/dbus-job.c | 236 |
1 files changed, 236 insertions, 0 deletions
diff --git a/src/dbus-job.c b/src/dbus-job.c new file mode 100644 index 0000000000..3a6e7159e9 --- /dev/null +++ b/src/dbus-job.c @@ -0,0 +1,236 @@ +/*-*- 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-job.h" + +static const char introspection[] = + DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE + "<node>" + " <interface name=\"org.freedesktop.systemd1.Job\">" + " <method name=\"Cancel\"/>" + " <signal name=\"Changed\"/>" + " <property name=\"Id\" type=\"u\" access=\"read\"/>" + " <property name=\"Unit\" type=\"(so)\" access=\"read\"/>" + " <property name=\"JobType\" type=\"s\" access=\"read\"/>" + " <property name=\"State\" type=\"s\" access=\"read\"/>" + " </interface>" + BUS_PROPERTIES_INTERFACE + BUS_INTROSPECTABLE_INTERFACE + "</node>"; + +static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_state, job_state, JobState); +static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_type, job_type, JobType); + +static int bus_job_append_unit(Manager *m, DBusMessageIter *i, const char *property, void *data) { + Job *j = data; + DBusMessageIter sub; + char *p; + + assert(m); + assert(i); + assert(property); + assert(j); + + if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub)) + return -ENOMEM; + + if (!(p = unit_dbus_path(j->unit))) + return -ENOMEM; + + if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &j->unit->meta.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; +} + +static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusMessage *message) { + const BusProperty properties[] = { + { "org.freedesktop.systemd1.Job", "Id", bus_property_append_uint32, "u", &j->id }, + { "org.freedesktop.systemd1.Job", "State", bus_job_append_state, "s", &j->state }, + { "org.freedesktop.systemd1.Job", "JobType", bus_job_append_type, "s", &j->type }, + { "org.freedesktop.systemd1.Job", "Unit", bus_job_append_unit, "(so)", j }, + { NULL, NULL, NULL, NULL, NULL } + }; + + DBusMessage *reply = NULL; + Manager *m = j->manager; + + if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) { + if (!(reply = dbus_message_new_method_return(message))) + goto oom; + + job_free(j); + + } else + return bus_default_message_handler(j->manager, message, introspection, properties); + + 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); + + return DBUS_HANDLER_RESULT_NEED_MEMORY; +} + +static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBusMessage *message, void *data) { + Manager *m = data; + Job *j; + 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_job_from_dbus_path(m, dbus_message_get_path(message), &j)) < 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_job_message_dispatch(j, message); +} + +const DBusObjectPathVTable bus_job_vtable = { + .message_function = bus_job_message_handler +}; + +void bus_job_send_change_signal(Job *j) { + char *p = NULL; + DBusMessage *m = NULL; + + assert(j); + assert(j->in_dbus_queue); + + LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j); + j->in_dbus_queue = false; + + if (set_isempty(j->manager->subscribed)) { + j->sent_dbus_new_signal = true; + return; + } + + if (!(p = job_dbus_path(j))) + goto oom; + + if (j->sent_dbus_new_signal) { + /* Send a change signal */ + + if (!(m = dbus_message_new_signal(p, "org.freedesktop.systemd1.Job", "Changed"))) + goto oom; + } else { + /* Send a new signal */ + + if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobNew"))) + goto oom; + + if (!dbus_message_append_args(m, + DBUS_TYPE_UINT32, &j->id, + DBUS_TYPE_OBJECT_PATH, &p, + DBUS_TYPE_INVALID)) + goto oom; + } + + if (!dbus_connection_send(j->manager->api_bus, m, NULL)) + goto oom; + + free(p); + dbus_message_unref(m); + + j->sent_dbus_new_signal = true; + + return; + +oom: + free(p); + + if (m) + dbus_message_unref(m); + + log_error("Failed to allocate job change signal."); +} + +void bus_job_send_removed_signal(Job *j) { + char *p = NULL; + DBusMessage *m = NULL; + + assert(j); + + if (set_isempty(j->manager->subscribed) || !j->sent_dbus_new_signal) + return; + + if (!(p = job_dbus_path(j))) + goto oom; + + if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobRemoved"))) + goto oom; + + if (!dbus_message_append_args(m, + DBUS_TYPE_UINT32, &j->id, + DBUS_TYPE_OBJECT_PATH, &p, + DBUS_TYPE_INVALID)) + goto oom; + + if (!dbus_connection_send(j->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 job remove signal."); +} |