273 lines
8.5 KiB
C
273 lines
8.5 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
|
|
|
|
/***
|
|
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"
|
|
|
|
#define BUS_JOB_INTERFACE \
|
|
" <interface name=\"org.freedesktop.systemd1.Job\">\n" \
|
|
" <method name=\"Cancel\"/>\n" \
|
|
" <property name=\"Id\" type=\"u\" access=\"read\"/>\n" \
|
|
" <property name=\"Unit\" type=\"(so)\" access=\"read\"/>\n" \
|
|
" <property name=\"JobType\" type=\"s\" access=\"read\"/>\n" \
|
|
" <property name=\"State\" type=\"s\" access=\"read\"/>\n" \
|
|
" </interface>\n"
|
|
|
|
#define INTROSPECTION \
|
|
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
|
|
"<node>\n" \
|
|
BUS_JOB_INTERFACE \
|
|
BUS_PROPERTIES_INTERFACE \
|
|
BUS_PEER_INTERFACE \
|
|
BUS_INTROSPECTABLE_INTERFACE \
|
|
"</node>\n"
|
|
|
|
const char bus_job_interface[] = BUS_JOB_INTERFACE;
|
|
|
|
#define INVALIDATING_PROPERTIES \
|
|
"State\0" \
|
|
"\0" \
|
|
|
|
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, DBusConnection *connection, 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;
|
|
|
|
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, connection, message, INTROSPECTION, properties);
|
|
|
|
if (reply) {
|
|
if (!dbus_connection_send(connection, 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);
|
|
|
|
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, connection, message, NULL, r);
|
|
}
|
|
|
|
return bus_job_message_dispatch(j, connection, message);
|
|
}
|
|
|
|
const DBusObjectPathVTable bus_job_vtable = {
|
|
.message_function = bus_job_message_handler
|
|
};
|
|
|
|
static int job_send_message(Job *j, DBusMessage *m) {
|
|
int r;
|
|
|
|
assert(j);
|
|
assert(m);
|
|
|
|
if (bus_has_subscriber(j->manager)) {
|
|
if ((r = bus_broadcast(j->manager, m)) < 0)
|
|
return r;
|
|
|
|
} else if (j->bus_client) {
|
|
/* If nobody is subscribed, we just send the message
|
|
* to the client which created the job */
|
|
|
|
assert(j->bus);
|
|
|
|
if (!dbus_message_set_destination(m, j->bus_client))
|
|
return -ENOMEM;
|
|
|
|
if (!dbus_connection_send(j->bus, m, NULL))
|
|
return -ENOMEM;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
void bus_job_send_change_signal(Job *j) {
|
|
char *p = NULL;
|
|
DBusMessage *m = NULL;
|
|
|
|
assert(j);
|
|
|
|
if (j->in_dbus_queue) {
|
|
LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j);
|
|
j->in_dbus_queue = false;
|
|
}
|
|
|
|
if (!bus_has_subscriber(j->manager) && !j->bus_client) {
|
|
j->sent_dbus_new_signal = true;
|
|
return;
|
|
}
|
|
|
|
if (!(p = job_dbus_path(j)))
|
|
goto oom;
|
|
|
|
if (j->sent_dbus_new_signal) {
|
|
/* Send a properties changed signal */
|
|
|
|
if (!(m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Job", INVALIDATING_PROPERTIES)))
|
|
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 (job_send_message(j, m) < 0)
|
|
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, bool success) {
|
|
char *p = NULL;
|
|
DBusMessage *m = NULL;
|
|
dbus_bool_t b = success;
|
|
|
|
assert(j);
|
|
|
|
if (!bus_has_subscriber(j->manager) && !j->bus_client)
|
|
return;
|
|
|
|
if (!j->sent_dbus_new_signal)
|
|
bus_job_send_change_signal(j);
|
|
|
|
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_BOOLEAN, &b,
|
|
DBUS_TYPE_INVALID))
|
|
goto oom;
|
|
|
|
if (job_send_message(j, m) < 0)
|
|
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.");
|
|
}
|