mirror of
https://github.com/AuxXxilium/eudev.git
synced 2024-12-22 23:36:40 +07:00
569 lines
23 KiB
C
569 lines
23 KiB
C
/*-*- 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-manager.h"
|
|
|
|
#define INTROSPECTION_BEGIN \
|
|
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
|
|
"<node>" \
|
|
" <interface name=\"org.freedesktop.systemd1.Manager\">" \
|
|
" <method name=\"GetUnit\">" \
|
|
" <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
|
|
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
|
|
" </method>" \
|
|
" <method name=\"LoadUnit\">" \
|
|
" <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
|
|
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
|
|
" </method>" \
|
|
" <method name=\"GetJob\">" \
|
|
" <arg name=\"id\" type=\"u\" direction=\"in\"/>" \
|
|
" <arg name=\"job\" type=\"o\" direction=\"out\"/>" \
|
|
" </method>" \
|
|
" <method name=\"ClearJobs\"/>" \
|
|
" <method name=\"ListUnits\">" \
|
|
" <arg name=\"units\" type=\"a(sssssouso)\" direction=\"out\"/>" \
|
|
" </method>" \
|
|
" <method name=\"ListJobs\">" \
|
|
" <arg name=\"jobs\" type=\"a(usssoo)\" direction=\"out\"/>" \
|
|
" </method>" \
|
|
" <method name=\"Subscribe\"/>" \
|
|
" <method name=\"Unsubscribe\"/>" \
|
|
" <method name=\"Dump\"/>" \
|
|
" <method name=\"CreateSnapshot\">" \
|
|
" <arg name=\"name\" type=\"s\" direction=\"in\"/>" \
|
|
" <arg nane=\"cleanup\" type=\"b\" direction=\"in\"/>" \
|
|
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>" \
|
|
" </method>" \
|
|
" <method name=\"Reload\"/>" \
|
|
" <method name=\"Reexecute\"/>" \
|
|
" <method name=\"Exit\"/>" \
|
|
" <signal name=\"UnitNew\">" \
|
|
" <arg name=\"id\" type=\"s\"/>" \
|
|
" <arg name=\"unit\" type=\"o\"/>" \
|
|
" </signal>" \
|
|
" <signal name=\"UnitRemoved\">" \
|
|
" <arg name=\"id\" type=\"s\"/>" \
|
|
" <arg name=\"unit\" type=\"o\"/>" \
|
|
" </signal>" \
|
|
" <signal name=\"JobNew\">" \
|
|
" <arg name=\"id\" type=\"u\"/>" \
|
|
" <arg name=\"job\" type=\"o\"/>" \
|
|
" </signal>" \
|
|
" <signal name=\"JobRemoved\">" \
|
|
" <arg name=\"id\" type=\"u\"/>" \
|
|
" <arg name=\"job\" type=\"o\"/>" \
|
|
" </signal>" \
|
|
" <property name=\"Version\" type=\"s\" access=\"read\"/>" \
|
|
" <property name=\"RunningAs\" type=\"s\" access=\"read\"/>" \
|
|
" <property name=\"BootTimestamp\" type=\"t\" access=\"read\"/>" \
|
|
" <property name=\"LogLevel\" type=\"s\" access=\"readwrite\"/>" \
|
|
" <property name=\"LogTarget\" type=\"s\" access=\"readwrite\"/>" \
|
|
" </interface>" \
|
|
BUS_PROPERTIES_INTERFACE \
|
|
BUS_INTROSPECTABLE_INTERFACE
|
|
|
|
#define INTROSPECTION_END \
|
|
"</node>"
|
|
|
|
static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_manager_append_running_as, manager_running_as, ManagerRunningAs);
|
|
|
|
static int bus_manager_append_log_target(Manager *m, DBusMessageIter *i, const char *property, void *data) {
|
|
const char *t;
|
|
|
|
assert(m);
|
|
assert(i);
|
|
assert(property);
|
|
|
|
t = log_target_to_string(log_get_target());
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_manager_append_log_level(Manager *m, DBusMessageIter *i, const char *property, void *data) {
|
|
const char *t;
|
|
|
|
assert(m);
|
|
assert(i);
|
|
assert(property);
|
|
|
|
t = log_level_to_string(log_get_max_level());
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
|
|
Manager *m = data;
|
|
|
|
const BusProperty properties[] = {
|
|
{ "org.freedesktop.systemd1.Manager", "Version", bus_property_append_string, "s", PACKAGE_STRING },
|
|
{ "org.freedesktop.systemd1.Manager", "RunningAs", bus_manager_append_running_as, "s", &m->running_as },
|
|
{ "org.freedesktop.systemd1.Manager", "BootTimestamp", bus_property_append_uint64, "t", &m->boot_timestamp },
|
|
{ "org.freedesktop.systemd1.Manager", "LogLevel", bus_manager_append_log_level, "s", NULL },
|
|
{ "org.freedesktop.systemd1.Manager", "LogTarget", bus_manager_append_log_target, "s", NULL },
|
|
{ NULL, NULL, NULL, NULL, NULL }
|
|
};
|
|
|
|
int r;
|
|
DBusError error;
|
|
DBusMessage *reply = NULL;
|
|
char * path = NULL;
|
|
|
|
assert(connection);
|
|
assert(message);
|
|
assert(m);
|
|
|
|
dbus_error_init(&error);
|
|
|
|
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 (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "GetUnit")) {
|
|
const char *name;
|
|
Unit *u;
|
|
|
|
if (!dbus_message_get_args(
|
|
message,
|
|
&error,
|
|
DBUS_TYPE_STRING, &name,
|
|
DBUS_TYPE_INVALID))
|
|
return bus_send_error_reply(m, message, &error, -EINVAL);
|
|
|
|
if (!(u = manager_get_unit(m, name)))
|
|
return bus_send_error_reply(m, message, NULL, -ENOENT);
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
if (!(path = unit_dbus_path(u)))
|
|
goto oom;
|
|
|
|
if (!dbus_message_append_args(
|
|
reply,
|
|
DBUS_TYPE_OBJECT_PATH, &path,
|
|
DBUS_TYPE_INVALID))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "LoadUnit")) {
|
|
const char *name;
|
|
Unit *u;
|
|
|
|
if (!dbus_message_get_args(
|
|
message,
|
|
&error,
|
|
DBUS_TYPE_STRING, &name,
|
|
DBUS_TYPE_INVALID))
|
|
return bus_send_error_reply(m, message, &error, -EINVAL);
|
|
|
|
if ((r = manager_load_unit(m, name, NULL, &u)) < 0)
|
|
return bus_send_error_reply(m, message, NULL, r);
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
if (!(path = unit_dbus_path(u)))
|
|
goto oom;
|
|
|
|
if (!dbus_message_append_args(
|
|
reply,
|
|
DBUS_TYPE_OBJECT_PATH, &path,
|
|
DBUS_TYPE_INVALID))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1", "GetJob")) {
|
|
uint32_t id;
|
|
Job *j;
|
|
|
|
if (!dbus_message_get_args(
|
|
message,
|
|
&error,
|
|
DBUS_TYPE_UINT32, &id,
|
|
DBUS_TYPE_INVALID))
|
|
return bus_send_error_reply(m, message, &error, -EINVAL);
|
|
|
|
if (!(j = manager_get_job(m, id)))
|
|
return bus_send_error_reply(m, message, NULL, -ENOENT);
|
|
|
|
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;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
|
|
|
|
manager_clear_jobs(m);
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListUnits")) {
|
|
DBusMessageIter iter, sub;
|
|
Iterator i;
|
|
Unit *u;
|
|
const char *k;
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
dbus_message_iter_init_append(reply, &iter);
|
|
|
|
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(sssssouso)", &sub))
|
|
goto oom;
|
|
|
|
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
|
|
char *u_path, *j_path;
|
|
const char *description, *load_state, *active_state, *sub_state, *job_type;
|
|
DBusMessageIter sub2;
|
|
uint32_t job_id;
|
|
|
|
if (k != u->meta.id)
|
|
continue;
|
|
|
|
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
|
|
goto oom;
|
|
|
|
description = unit_description(u);
|
|
load_state = unit_load_state_to_string(u->meta.load_state);
|
|
active_state = unit_active_state_to_string(unit_active_state(u));
|
|
sub_state = unit_sub_state_to_string(u);
|
|
|
|
if (!(u_path = unit_dbus_path(u)))
|
|
goto oom;
|
|
|
|
if (u->meta.job) {
|
|
job_id = (uint32_t) u->meta.job->id;
|
|
|
|
if (!(j_path = job_dbus_path(u->meta.job))) {
|
|
free(u_path);
|
|
goto oom;
|
|
}
|
|
|
|
job_type = job_type_to_string(u->meta.job->type);
|
|
} else {
|
|
job_id = 0;
|
|
j_path = u_path;
|
|
job_type = "";
|
|
}
|
|
|
|
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &u->meta.id) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &description) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &load_state) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &active_state) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &sub_state) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &job_id) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &job_type) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path)) {
|
|
free(u_path);
|
|
if (u->meta.job)
|
|
free(j_path);
|
|
goto oom;
|
|
}
|
|
|
|
free(u_path);
|
|
if (u->meta.job)
|
|
free(j_path);
|
|
|
|
if (!dbus_message_iter_close_container(&sub, &sub2))
|
|
goto oom;
|
|
}
|
|
|
|
if (!dbus_message_iter_close_container(&iter, &sub))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ListJobs")) {
|
|
DBusMessageIter iter, sub;
|
|
Iterator i;
|
|
Job *j;
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
dbus_message_iter_init_append(reply, &iter);
|
|
|
|
if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "(usssoo)", &sub))
|
|
goto oom;
|
|
|
|
HASHMAP_FOREACH(j, m->jobs, i) {
|
|
char *u_path, *j_path;
|
|
const char *state, *type;
|
|
uint32_t id;
|
|
DBusMessageIter sub2;
|
|
|
|
if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
|
|
goto oom;
|
|
|
|
id = (uint32_t) j->id;
|
|
state = job_state_to_string(j->state);
|
|
type = job_type_to_string(j->type);
|
|
|
|
if (!(j_path = job_dbus_path(j)))
|
|
goto oom;
|
|
|
|
if (!(u_path = unit_dbus_path(j->unit))) {
|
|
free(j_path);
|
|
goto oom;
|
|
}
|
|
|
|
if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_UINT32, &id) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &j->unit->meta.id) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &type) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &state) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &j_path) ||
|
|
!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &u_path)) {
|
|
free(j_path);
|
|
free(u_path);
|
|
goto oom;
|
|
}
|
|
|
|
free(j_path);
|
|
free(u_path);
|
|
|
|
if (!dbus_message_iter_close_container(&sub, &sub2))
|
|
goto oom;
|
|
}
|
|
|
|
if (!dbus_message_iter_close_container(&iter, &sub))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Subscribe")) {
|
|
char *client;
|
|
|
|
if (!(client = strdup(dbus_message_get_sender(message))))
|
|
goto oom;
|
|
|
|
r = set_put(m->subscribed, client);
|
|
|
|
if (r < 0)
|
|
return bus_send_error_reply(m, message, NULL, r);
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Unsubscribe")) {
|
|
char *client;
|
|
|
|
if (!(client = set_remove(m->subscribed, (char*) dbus_message_get_sender(message))))
|
|
return bus_send_error_reply(m, message, NULL, -ENOENT);
|
|
|
|
free(client);
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Dump")) {
|
|
FILE *f;
|
|
char *dump = NULL;
|
|
size_t size;
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
if (!(f = open_memstream(&dump, &size)))
|
|
goto oom;
|
|
|
|
manager_dump_units(m, f, NULL);
|
|
manager_dump_jobs(m, f, NULL);
|
|
|
|
if (ferror(f)) {
|
|
fclose(f);
|
|
free(dump);
|
|
goto oom;
|
|
}
|
|
|
|
fclose(f);
|
|
|
|
if (!dbus_message_append_args(reply, DBUS_TYPE_STRING, &dump, DBUS_TYPE_INVALID)) {
|
|
free(dump);
|
|
goto oom;
|
|
}
|
|
|
|
free(dump);
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CreateSnapshot")) {
|
|
const char *name;
|
|
dbus_bool_t cleanup;
|
|
Snapshot *s;
|
|
|
|
if (!dbus_message_get_args(
|
|
message,
|
|
&error,
|
|
DBUS_TYPE_STRING, &name,
|
|
DBUS_TYPE_BOOLEAN, &cleanup,
|
|
DBUS_TYPE_INVALID))
|
|
return bus_send_error_reply(m, message, &error, -EINVAL);
|
|
|
|
if (name && name[0] == 0)
|
|
name = NULL;
|
|
|
|
if ((r = snapshot_create(m, name, cleanup, &s)) < 0)
|
|
return bus_send_error_reply(m, message, NULL, r);
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
if (!(path = unit_dbus_path(UNIT(s))))
|
|
goto oom;
|
|
|
|
if (!dbus_message_append_args(
|
|
reply,
|
|
DBUS_TYPE_OBJECT_PATH, &path,
|
|
DBUS_TYPE_INVALID))
|
|
goto oom;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
|
|
char *introspection = NULL;
|
|
FILE *f;
|
|
Iterator i;
|
|
Unit *u;
|
|
Job *j;
|
|
const char *k;
|
|
size_t size;
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
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. */
|
|
|
|
if (!(f = open_memstream(&introspection, &size)))
|
|
goto oom;
|
|
|
|
fputs(INTROSPECTION_BEGIN, f);
|
|
|
|
HASHMAP_FOREACH_KEY(u, k, m->units, i) {
|
|
char *p;
|
|
|
|
if (k != u->meta.id)
|
|
continue;
|
|
|
|
if (!(p = bus_path_escape(k))) {
|
|
fclose(f);
|
|
free(introspection);
|
|
goto oom;
|
|
}
|
|
|
|
fprintf(f, "<node name=\"unit/%s\"/>", p);
|
|
free(p);
|
|
}
|
|
|
|
HASHMAP_FOREACH(j, m->jobs, i)
|
|
fprintf(f, "<node name=\"job/%lu\"/>", (unsigned long) j->id);
|
|
|
|
fputs(INTROSPECTION_END, 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);
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reload")) {
|
|
|
|
assert(!m->queued_message);
|
|
|
|
/* Instead of sending the reply back right away, we
|
|
* just remember that we need to and then send it
|
|
* after the reload is finished. That way the caller
|
|
* knows when the reload finished. */
|
|
|
|
if (!(m->queued_message = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
m->exit_code = MANAGER_RELOAD;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Reexecute")) {
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
m->exit_code = MANAGER_REEXECUTE;
|
|
|
|
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "Exit")) {
|
|
|
|
if (m->running_as == MANAGER_INIT)
|
|
return bus_send_error_reply(m, message, NULL, -ENOTSUP);
|
|
|
|
if (!(reply = dbus_message_new_method_return(message)))
|
|
goto oom;
|
|
|
|
m->exit_code = MANAGER_EXIT;
|
|
|
|
} else
|
|
return bus_default_message_handler(m, message, NULL, properties);
|
|
|
|
free(path);
|
|
|
|
if (reply) {
|
|
if (!dbus_connection_send(connection, reply, NULL))
|
|
goto oom;
|
|
|
|
dbus_message_unref(reply);
|
|
}
|
|
|
|
return DBUS_HANDLER_RESULT_HANDLED;
|
|
|
|
oom:
|
|
free(path);
|
|
|
|
if (reply)
|
|
dbus_message_unref(reply);
|
|
|
|
dbus_error_free(&error);
|
|
|
|
return DBUS_HANDLER_RESULT_NEED_MEMORY;
|
|
}
|
|
|
|
const DBusObjectPathVTable bus_manager_vtable = {
|
|
.message_function = bus_manager_message_handler
|
|
};
|