888 lines
33 KiB
C
888 lines
33 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 Lesser General Public License as published by
|
|
the Free Software Foundation; either version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser 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"
|
|
#include "bus-errors.h"
|
|
#include "dbus-common.h"
|
|
#include "selinux-access.h"
|
|
|
|
const char bus_unit_interface[] _introspect_("Unit") = BUS_UNIT_INTERFACE;
|
|
|
|
#define INVALIDATING_PROPERTIES \
|
|
"LoadState\0" \
|
|
"ActiveState\0" \
|
|
"SubState\0" \
|
|
"InactiveExitTimestamp\0" \
|
|
"ActiveEnterTimestamp\0" \
|
|
"ActiveExitTimestamp\0" \
|
|
"InactiveEnterTimestamp\0" \
|
|
"Job\0" \
|
|
"NeedDaemonReload\0"
|
|
|
|
static int bus_unit_append_names(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->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;
|
|
}
|
|
|
|
static int bus_unit_append_following(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data, *f;
|
|
const char *d;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
f = unit_following(u);
|
|
d = f ? f->id : "";
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_dependencies(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->id))
|
|
return -ENOMEM;
|
|
|
|
if (!dbus_message_iter_close_container(i, &sub))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_description(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
const char *d;
|
|
|
|
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;
|
|
}
|
|
|
|
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_unit_append_load_state, unit_load_state, UnitLoadState);
|
|
|
|
static int bus_unit_append_active_state(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
const char *state;
|
|
|
|
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;
|
|
}
|
|
|
|
static int bus_unit_append_sub_state(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
const char *state;
|
|
|
|
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;
|
|
}
|
|
|
|
static int bus_unit_append_file_state(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
const char *state;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
state = strempty(unit_file_state_to_string(unit_get_unit_file_state(u)));
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_can_start(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
dbus_bool_t b;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
b = unit_can_start(u) &&
|
|
!u->refuse_manual_start;
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_can_stop(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
dbus_bool_t b;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
/* On the lower levels we assume that every unit we can start
|
|
* we can also stop */
|
|
|
|
b = unit_can_start(u) &&
|
|
!u->refuse_manual_stop;
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_can_reload(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
dbus_bool_t b;
|
|
|
|
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;
|
|
}
|
|
|
|
static int bus_unit_append_can_isolate(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
dbus_bool_t b;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
b = unit_can_isolate(u) &&
|
|
!u->refuse_manual_start;
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_job(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
DBusMessageIter sub;
|
|
char *p;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
|
|
return -ENOMEM;
|
|
|
|
if (u->job) {
|
|
|
|
if (!(p = job_dbus_path(u->job)))
|
|
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);
|
|
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;
|
|
}
|
|
|
|
static int bus_unit_append_default_cgroup(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
char *t;
|
|
CGroupBonding *cgb;
|
|
bool success;
|
|
|
|
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;
|
|
}
|
|
|
|
static int bus_unit_append_cgroups(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->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;
|
|
}
|
|
|
|
static int bus_unit_append_cgroup_attrs(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
CGroupAttribute *a;
|
|
DBusMessageIter sub, sub2;
|
|
|
|
if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(sss)", &sub))
|
|
return -ENOMEM;
|
|
|
|
LIST_FOREACH(by_unit, a, u->cgroup_attributes) {
|
|
char *v = NULL;
|
|
bool success;
|
|
|
|
if (a->map_callback)
|
|
a->map_callback(a->controller, a->name, 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->controller) &&
|
|
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;
|
|
}
|
|
|
|
if (!dbus_message_iter_close_container(i, &sub))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_need_daemon_reload(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
dbus_bool_t b;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
b = unit_need_daemon_reload(u);
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_unit_append_load_error(DBusMessageIter *i, const char *property, void *data) {
|
|
Unit *u = data;
|
|
const char *name, *message;
|
|
DBusMessageIter sub;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
if (u->load_error != 0) {
|
|
name = bus_errno_to_dbus(u->load_error);
|
|
message = strempty(strerror(-u->load_error));
|
|
} else
|
|
name = message = "";
|
|
|
|
if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub) ||
|
|
!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &name) ||
|
|
!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &message) ||
|
|
!dbus_message_iter_close_container(i, &sub))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusConnection *connection, DBusMessage *message) {
|
|
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
|
|
DBusError error;
|
|
JobType job_type = _JOB_TYPE_INVALID;
|
|
bool reload_if_possible = false;
|
|
int r;
|
|
|
|
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 (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "TryRestart"))
|
|
job_type = JOB_TRY_RESTART;
|
|
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrRestart")) {
|
|
reload_if_possible = true;
|
|
job_type = JOB_RESTART;
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "ReloadOrTryRestart")) {
|
|
reload_if_possible = true;
|
|
job_type = JOB_TRY_RESTART;
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Kill")) {
|
|
const char *swho;
|
|
int32_t signo;
|
|
KillWho who;
|
|
|
|
if (!dbus_message_get_args(
|
|
message,
|
|
&error,
|
|
DBUS_TYPE_STRING, &swho,
|
|
DBUS_TYPE_INT32, &signo,
|
|
DBUS_TYPE_INVALID))
|
|
return bus_send_error_reply(connection, message, &error, -EINVAL);
|
|
|
|
if (isempty(swho))
|
|
who = KILL_ALL;
|
|
else {
|
|
who = kill_who_from_string(swho);
|
|
if (who < 0)
|
|
return bus_send_error_reply(connection, message, &error, -EINVAL);
|
|
}
|
|
|
|
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);
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (!reply)
|
|
goto oom;
|
|
|
|
} 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);
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (!reply)
|
|
goto oom;
|
|
|
|
} else if (UNIT_VTABLE(u)->bus_message_handler)
|
|
return UNIT_VTABLE(u)->bus_message_handler(u, connection, message);
|
|
else
|
|
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
|
|
|
if (job_type != _JOB_TYPE_INVALID) {
|
|
const char *smode;
|
|
JobMode mode;
|
|
|
|
if (!dbus_message_get_args(
|
|
message,
|
|
&error,
|
|
DBUS_TYPE_STRING, &smode,
|
|
DBUS_TYPE_INVALID))
|
|
return bus_send_error_reply(connection, message, &error, -EINVAL);
|
|
|
|
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);
|
|
}
|
|
|
|
return bus_unit_queue_job(connection, message, u, job_type, mode, reload_if_possible);
|
|
}
|
|
|
|
if (reply)
|
|
if (!dbus_connection_send(connection, reply, NULL))
|
|
goto oom;
|
|
|
|
return DBUS_HANDLER_RESULT_HANDLED;
|
|
|
|
oom:
|
|
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;
|
|
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
|
|
DBusError error;
|
|
|
|
assert(connection);
|
|
assert(message);
|
|
assert(m);
|
|
|
|
dbus_error_init(&error);
|
|
|
|
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;
|
|
Iterator i;
|
|
const char *k;
|
|
size_t size;
|
|
|
|
reply = dbus_message_new_method_return(message);
|
|
if (!reply)
|
|
goto oom;
|
|
|
|
/* We roll our own introspection code here, instead of
|
|
* relying on bus_default_message_handler() because we
|
|
* need to generate our introspection string
|
|
* dynamically. */
|
|
|
|
f = open_memstream(&introspection, &size);
|
|
if (!f)
|
|
goto oom;
|
|
|
|
fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
|
|
"<node>\n", f);
|
|
|
|
fputs(BUS_INTROSPECTABLE_INTERFACE, f);
|
|
fputs(BUS_PEER_INTERFACE, f);
|
|
|
|
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
|
|
char *p;
|
|
|
|
if (k != u->id)
|
|
continue;
|
|
|
|
p = bus_path_escape(k);
|
|
if (!p) {
|
|
fclose(f);
|
|
free(introspection);
|
|
goto oom;
|
|
}
|
|
|
|
fprintf(f, "<node name=\"%s\"/>", p);
|
|
free(p);
|
|
}
|
|
|
|
fputs("</node>\n", f);
|
|
|
|
if (ferror(f)) {
|
|
fclose(f);
|
|
free(introspection);
|
|
goto oom;
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
if (!introspection)
|
|
goto oom;
|
|
|
|
if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &introspection, DBUS_TYPE_INVALID)) {
|
|
free(introspection);
|
|
goto oom;
|
|
}
|
|
|
|
free(introspection);
|
|
|
|
if (!dbus_connection_send(connection, reply, NULL))
|
|
goto oom;
|
|
|
|
return DBUS_HANDLER_RESULT_HANDLED;
|
|
}
|
|
|
|
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
|
|
}
|
|
|
|
r = manager_load_unit_from_dbus_path(m, dbus_message_get_path(message), &error, &u);
|
|
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:
|
|
dbus_error_free(&error);
|
|
|
|
return DBUS_HANDLER_RESULT_NEED_MEMORY;
|
|
}
|
|
|
|
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);
|
|
|
|
if (u->in_dbus_queue) {
|
|
LIST_REMOVE(Unit, dbus_queue, u->manager->dbus_unit_queue, u);
|
|
u->in_dbus_queue = false;
|
|
}
|
|
|
|
if (!u->id)
|
|
return;
|
|
|
|
if (!bus_has_subscriber(u->manager)) {
|
|
u->sent_dbus_new_signal = true;
|
|
return;
|
|
}
|
|
|
|
if (!(p = unit_dbus_path(u)))
|
|
goto oom;
|
|
|
|
if (u->sent_dbus_new_signal) {
|
|
/* Send a properties changed signal. First for the
|
|
* specific type, then for the generic unit. The
|
|
* clients may rely on this order to get atomic
|
|
* behavior if needed. */
|
|
|
|
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)))
|
|
goto oom;
|
|
|
|
if (bus_broadcast(u->manager, m) < 0)
|
|
goto oom;
|
|
|
|
dbus_message_unref(m);
|
|
}
|
|
|
|
if (!(m = bus_properties_changed_new(p, "org.freedesktop.systemd1.Unit", INVALIDATING_PROPERTIES)))
|
|
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->id,
|
|
DBUS_TYPE_OBJECT_PATH, &p,
|
|
DBUS_TYPE_INVALID))
|
|
goto oom;
|
|
}
|
|
|
|
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.");
|
|
}
|
|
|
|
void bus_unit_send_removed_signal(Unit *u) {
|
|
char *p = NULL;
|
|
DBusMessage *m = NULL;
|
|
|
|
assert(u);
|
|
|
|
if (!bus_has_subscriber(u->manager))
|
|
return;
|
|
|
|
if (!u->sent_dbus_new_signal)
|
|
bus_unit_send_change_signal(u);
|
|
|
|
if (!u->id)
|
|
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->id,
|
|
DBUS_TYPE_OBJECT_PATH, &p,
|
|
DBUS_TYPE_INVALID))
|
|
goto oom;
|
|
|
|
if (bus_broadcast(u->manager, 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 unit remove signal.");
|
|
}
|
|
|
|
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 (!dbus_connection_send(connection, reply, NULL))
|
|
goto oom;
|
|
|
|
return DBUS_HANDLER_RESULT_HANDLED;
|
|
|
|
oom:
|
|
dbus_error_free(&error);
|
|
|
|
return DBUS_HANDLER_RESULT_NEED_MEMORY;
|
|
}
|
|
|
|
const BusProperty bus_unit_properties[] = {
|
|
{ "Id", bus_property_append_string, "s", offsetof(Unit, id), true },
|
|
{ "Names", bus_unit_append_names, "as", 0 },
|
|
{ "Following", bus_unit_append_following, "s", 0 },
|
|
{ "Requires", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRES]), true },
|
|
{ "RequiresOverridable", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRES_OVERRIDABLE]), true },
|
|
{ "Requisite", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUISITE]), true },
|
|
{ "RequisiteOverridable", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUISITE_OVERRIDABLE]), true },
|
|
{ "Wants", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_WANTS]), true },
|
|
{ "BindsTo", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BINDS_TO]), true },
|
|
{ "PartOf", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_PART_OF]), true },
|
|
{ "RequiredBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY]), true },
|
|
{ "RequiredByOverridable",bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_REQUIRED_BY_OVERRIDABLE]), true },
|
|
{ "WantedBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_WANTED_BY]), true },
|
|
{ "BoundBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BOUND_BY]), true },
|
|
{ "ConsistsOf", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONSISTS_OF]), true },
|
|
{ "Conflicts", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONFLICTS]), true },
|
|
{ "ConflictedBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_CONFLICTED_BY]), true },
|
|
{ "Before", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_BEFORE]), true },
|
|
{ "After", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_AFTER]), true },
|
|
{ "OnFailure", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_ON_FAILURE]), true },
|
|
{ "Triggers", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_TRIGGERS]), true },
|
|
{ "TriggeredBy", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_TRIGGERED_BY]), true },
|
|
{ "PropagatesReloadTo", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_PROPAGATES_RELOAD_TO]), true },
|
|
{ "ReloadPropagatedFrom", bus_unit_append_dependencies, "as", offsetof(Unit, dependencies[UNIT_RELOAD_PROPAGATED_FROM]), true },
|
|
{ "RequiresMountsFor", bus_property_append_strv, "as", offsetof(Unit, requires_mounts_for), true },
|
|
{ "Documentation", bus_property_append_strv, "as", offsetof(Unit, documentation), true },
|
|
{ "Description", bus_unit_append_description, "s", 0 },
|
|
{ "LoadState", bus_unit_append_load_state, "s", offsetof(Unit, load_state) },
|
|
{ "ActiveState", bus_unit_append_active_state, "s", 0 },
|
|
{ "SubState", bus_unit_append_sub_state, "s", 0 },
|
|
{ "FragmentPath", bus_property_append_string, "s", offsetof(Unit, fragment_path), true },
|
|
{ "SourcePath", bus_property_append_string, "s", offsetof(Unit, source_path), true },
|
|
{ "UnitFileState", bus_unit_append_file_state, "s", 0 },
|
|
{ "InactiveExitTimestamp",bus_property_append_usec, "t", offsetof(Unit, inactive_exit_timestamp.realtime) },
|
|
{ "InactiveExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, inactive_exit_timestamp.monotonic) },
|
|
{ "ActiveEnterTimestamp", bus_property_append_usec, "t", offsetof(Unit, active_enter_timestamp.realtime) },
|
|
{ "ActiveEnterTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, active_enter_timestamp.monotonic) },
|
|
{ "ActiveExitTimestamp", bus_property_append_usec, "t", offsetof(Unit, active_exit_timestamp.realtime) },
|
|
{ "ActiveExitTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, active_exit_timestamp.monotonic) },
|
|
{ "InactiveEnterTimestamp", bus_property_append_usec, "t", offsetof(Unit, inactive_enter_timestamp.realtime) },
|
|
{ "InactiveEnterTimestampMonotonic",bus_property_append_usec, "t", offsetof(Unit, inactive_enter_timestamp.monotonic) },
|
|
{ "CanStart", bus_unit_append_can_start, "b", 0 },
|
|
{ "CanStop", bus_unit_append_can_stop, "b", 0 },
|
|
{ "CanReload", bus_unit_append_can_reload, "b", 0 },
|
|
{ "CanIsolate", bus_unit_append_can_isolate, "b", 0 },
|
|
{ "Job", bus_unit_append_job, "(uo)", 0 },
|
|
{ "StopWhenUnneeded", bus_property_append_bool, "b", offsetof(Unit, stop_when_unneeded) },
|
|
{ "RefuseManualStart", bus_property_append_bool, "b", offsetof(Unit, refuse_manual_start) },
|
|
{ "RefuseManualStop", bus_property_append_bool, "b", offsetof(Unit, refuse_manual_stop) },
|
|
{ "AllowIsolate", bus_property_append_bool, "b", offsetof(Unit, allow_isolate) },
|
|
{ "DefaultDependencies", bus_property_append_bool, "b", offsetof(Unit, default_dependencies) },
|
|
{ "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) },
|
|
{ "ConditionTimestampMonotonic", bus_property_append_usec, "t", offsetof(Unit, condition_timestamp.monotonic) },
|
|
{ "ConditionResult", bus_property_append_bool, "b", offsetof(Unit, condition_result) },
|
|
{ "LoadError", bus_unit_append_load_error, "(ss)", 0 },
|
|
{ NULL, }
|
|
};
|