190700621f
This should simplify the prototype a bit. The bus parameter is redundant in most cases, and in the few where it matters it can be derived from the message via sd_bus_message_get_bus().
2054 lines
62 KiB
C
2054 lines
62 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2013 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <sys/socket.h>
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#include "sd-daemon.h"
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#include "sd-event.h"
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#include "util.h"
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#include "strv.h"
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#include "macro.h"
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#include "def.h"
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#include "path-util.h"
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#include "missing.h"
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#include "set.h"
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#include "unit-name.h"
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#include "sd-bus.h"
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#include "bus-error.h"
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#include "bus-label.h"
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#include "bus-message.h"
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#include "bus-util.h"
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#include "bus-internal.h"
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static int name_owner_change_callback(sd_bus_message *m, void *userdata, sd_bus_error *ret_error) {
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sd_event *e = userdata;
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assert(m);
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assert(e);
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sd_bus_close(sd_bus_message_get_bus(m));
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sd_event_exit(e, 0);
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return 1;
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}
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int bus_async_unregister_and_exit(sd_event *e, sd_bus *bus, const char *name) {
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_cleanup_free_ char *match = NULL;
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const char *unique;
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int r;
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assert(e);
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assert(bus);
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assert(name);
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/* We unregister the name here and then wait for the
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* NameOwnerChanged signal for this event to arrive before we
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* quit. We do this in order to make sure that any queued
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* requests are still processed before we really exit. */
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r = sd_bus_get_unique_name(bus, &unique);
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if (r < 0)
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return r;
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r = asprintf(&match,
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"sender='org.freedesktop.DBus',"
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"type='signal',"
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"interface='org.freedesktop.DBus',"
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"member='NameOwnerChanged',"
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"path='/org/freedesktop/DBus',"
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"arg0='%s',"
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"arg1='%s',"
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"arg2=''", name, unique);
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if (r < 0)
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return -ENOMEM;
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r = sd_bus_add_match(bus, NULL, match, name_owner_change_callback, e);
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if (r < 0)
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return r;
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r = sd_bus_release_name(bus, name);
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if (r < 0)
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return r;
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return 0;
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}
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int bus_event_loop_with_idle(
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sd_event *e,
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sd_bus *bus,
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const char *name,
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usec_t timeout,
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check_idle_t check_idle,
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void *userdata) {
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bool exiting = false;
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int r, code;
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assert(e);
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assert(bus);
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assert(name);
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for (;;) {
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bool idle;
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r = sd_event_get_state(e);
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if (r < 0)
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return r;
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if (r == SD_EVENT_FINISHED)
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break;
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if (check_idle)
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idle = check_idle(userdata);
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else
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idle = true;
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r = sd_event_run(e, exiting || !idle ? (uint64_t) -1 : timeout);
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if (r < 0)
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return r;
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if (r == 0 && !exiting && idle) {
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r = sd_bus_try_close(bus);
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if (r == -EBUSY)
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continue;
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/* Fallback for dbus1 connections: we
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* unregister the name and wait for the
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* response to come through for it */
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if (r == -EOPNOTSUPP) {
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/* Inform the service manager that we
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* are going down, so that it will
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* queue all further start requests,
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* instead of assuming we are already
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* running. */
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sd_notify(false, "STOPPING=1");
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r = bus_async_unregister_and_exit(e, bus, name);
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if (r < 0)
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return r;
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exiting = true;
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continue;
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}
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if (r < 0)
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return r;
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sd_event_exit(e, 0);
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break;
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}
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}
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r = sd_event_get_exit_code(e, &code);
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if (r < 0)
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return r;
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return code;
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}
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int bus_name_has_owner(sd_bus *c, const char *name, sd_bus_error *error) {
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_cleanup_bus_message_unref_ sd_bus_message *rep = NULL;
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int r, has_owner = 0;
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assert(c);
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assert(name);
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r = sd_bus_call_method(c,
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"org.freedesktop.DBus",
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"/org/freedesktop/dbus",
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"org.freedesktop.DBus",
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"NameHasOwner",
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error,
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&rep,
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"s",
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name);
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if (r < 0)
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return r;
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r = sd_bus_message_read_basic(rep, 'b', &has_owner);
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if (r < 0)
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return sd_bus_error_set_errno(error, r);
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return has_owner;
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}
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static int check_good_user(sd_bus_message *m, uid_t good_user) {
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_cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
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uid_t sender_uid;
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int r;
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assert(m);
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if (good_user == UID_INVALID)
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return 0;
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r = sd_bus_query_sender_creds(m, SD_BUS_CREDS_EUID, &creds);
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if (r < 0)
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return r;
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/* Don't trust augmented credentials for authorization */
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assert_return((sd_bus_creds_get_augmented_mask(creds) & SD_BUS_CREDS_EUID) == 0, -EPERM);
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r = sd_bus_creds_get_euid(creds, &sender_uid);
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if (r < 0)
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return r;
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return sender_uid == good_user;
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}
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int bus_test_polkit(
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sd_bus_message *call,
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int capability,
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const char *action,
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uid_t good_user,
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bool *_challenge,
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sd_bus_error *e) {
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int r;
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assert(call);
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assert(action);
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/* Tests non-interactively! */
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r = check_good_user(call, good_user);
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if (r != 0)
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return r;
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r = sd_bus_query_sender_privilege(call, capability);
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if (r < 0)
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return r;
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else if (r > 0)
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return 1;
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#ifdef ENABLE_POLKIT
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else {
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_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
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int authorized = false, challenge = false;
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const char *sender;
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sender = sd_bus_message_get_sender(call);
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if (!sender)
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return -EBADMSG;
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r = sd_bus_call_method(
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call->bus,
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"org.freedesktop.PolicyKit1",
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"/org/freedesktop/PolicyKit1/Authority",
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"org.freedesktop.PolicyKit1.Authority",
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"CheckAuthorization",
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e,
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&reply,
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"(sa{sv})sa{ss}us",
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"system-bus-name", 1, "name", "s", sender,
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action,
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0,
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0,
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"");
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if (r < 0) {
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/* Treat no PK available as access denied */
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if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN)) {
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sd_bus_error_free(e);
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return -EACCES;
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}
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return r;
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}
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r = sd_bus_message_enter_container(reply, 'r', "bba{ss}");
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if (r < 0)
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return r;
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r = sd_bus_message_read(reply, "bb", &authorized, &challenge);
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if (r < 0)
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return r;
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if (authorized)
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return 1;
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if (_challenge) {
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*_challenge = challenge;
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return 0;
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}
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}
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#endif
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return -EACCES;
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}
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#ifdef ENABLE_POLKIT
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typedef struct AsyncPolkitQuery {
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sd_bus_message *request, *reply;
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sd_bus_message_handler_t callback;
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void *userdata;
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sd_bus_slot *slot;
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Hashmap *registry;
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} AsyncPolkitQuery;
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static void async_polkit_query_free(AsyncPolkitQuery *q) {
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if (!q)
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return;
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sd_bus_slot_unref(q->slot);
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if (q->registry && q->request)
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hashmap_remove(q->registry, q->request);
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sd_bus_message_unref(q->request);
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sd_bus_message_unref(q->reply);
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free(q);
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}
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static int async_polkit_callback(sd_bus_message *reply, void *userdata, sd_bus_error *error) {
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_cleanup_bus_error_free_ sd_bus_error error_buffer = SD_BUS_ERROR_NULL;
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AsyncPolkitQuery *q = userdata;
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int r;
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assert(reply);
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assert(q);
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q->slot = sd_bus_slot_unref(q->slot);
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q->reply = sd_bus_message_ref(reply);
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r = sd_bus_message_rewind(q->request, true);
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if (r < 0) {
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r = sd_bus_reply_method_errno(q->request, r, NULL);
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goto finish;
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}
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r = q->callback(q->request, q->userdata, &error_buffer);
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r = bus_maybe_reply_error(q->request, r, &error_buffer);
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finish:
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async_polkit_query_free(q);
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return r;
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}
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#endif
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|
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int bus_verify_polkit_async(
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sd_bus_message *call,
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int capability,
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const char *action,
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bool interactive,
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uid_t good_user,
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Hashmap **registry,
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sd_bus_error *error) {
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|
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#ifdef ENABLE_POLKIT
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_cleanup_bus_message_unref_ sd_bus_message *pk = NULL;
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AsyncPolkitQuery *q;
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const char *sender;
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sd_bus_message_handler_t callback;
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void *userdata;
|
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int c;
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#endif
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int r;
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assert(call);
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assert(action);
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assert(registry);
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|
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r = check_good_user(call, good_user);
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if (r != 0)
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return r;
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#ifdef ENABLE_POLKIT
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q = hashmap_get(*registry, call);
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if (q) {
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int authorized, challenge;
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|
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/* This is the second invocation of this function, and
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* there's already a response from polkit, let's
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* process it */
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assert(q->reply);
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|
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if (sd_bus_message_is_method_error(q->reply, NULL)) {
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const sd_bus_error *e;
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|
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/* Copy error from polkit reply */
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e = sd_bus_message_get_error(q->reply);
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sd_bus_error_copy(error, e);
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|
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/* Treat no PK available as access denied */
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if (sd_bus_error_has_name(e, SD_BUS_ERROR_SERVICE_UNKNOWN))
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return -EACCES;
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|
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return -sd_bus_error_get_errno(e);
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}
|
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|
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r = sd_bus_message_enter_container(q->reply, 'r', "bba{ss}");
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if (r >= 0)
|
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r = sd_bus_message_read(q->reply, "bb", &authorized, &challenge);
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|
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if (r < 0)
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return r;
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|
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if (authorized)
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return 1;
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|
|
if (challenge)
|
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return sd_bus_error_set(error, SD_BUS_ERROR_INTERACTIVE_AUTHORIZATION_REQUIRED, "Interactive authentication required.");
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|
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return -EACCES;
|
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}
|
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#endif
|
|
|
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r = sd_bus_query_sender_privilege(call, capability);
|
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if (r < 0)
|
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return r;
|
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else if (r > 0)
|
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return 1;
|
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|
|
#ifdef ENABLE_POLKIT
|
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if (sd_bus_get_current_message(call->bus) != call)
|
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return -EINVAL;
|
|
|
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callback = sd_bus_get_current_handler(call->bus);
|
|
if (!callback)
|
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return -EINVAL;
|
|
|
|
userdata = sd_bus_get_current_userdata(call->bus);
|
|
|
|
sender = sd_bus_message_get_sender(call);
|
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if (!sender)
|
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return -EBADMSG;
|
|
|
|
c = sd_bus_message_get_allow_interactive_authorization(call);
|
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if (c < 0)
|
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return c;
|
|
if (c > 0)
|
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interactive = true;
|
|
|
|
r = hashmap_ensure_allocated(registry, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_new_method_call(
|
|
call->bus,
|
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&pk,
|
|
"org.freedesktop.PolicyKit1",
|
|
"/org/freedesktop/PolicyKit1/Authority",
|
|
"org.freedesktop.PolicyKit1.Authority",
|
|
"CheckAuthorization");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_append(
|
|
pk,
|
|
"(sa{sv})sa{ss}us",
|
|
"system-bus-name", 1, "name", "s", sender,
|
|
action,
|
|
0,
|
|
!!interactive,
|
|
NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
q = new0(AsyncPolkitQuery, 1);
|
|
if (!q)
|
|
return -ENOMEM;
|
|
|
|
q->request = sd_bus_message_ref(call);
|
|
q->callback = callback;
|
|
q->userdata = userdata;
|
|
|
|
r = hashmap_put(*registry, call, q);
|
|
if (r < 0) {
|
|
async_polkit_query_free(q);
|
|
return r;
|
|
}
|
|
|
|
q->registry = *registry;
|
|
|
|
r = sd_bus_call_async(call->bus, &q->slot, pk, async_polkit_callback, q, 0);
|
|
if (r < 0) {
|
|
async_polkit_query_free(q);
|
|
return r;
|
|
}
|
|
|
|
return 0;
|
|
#endif
|
|
|
|
return -EACCES;
|
|
}
|
|
|
|
void bus_verify_polkit_async_registry_free(Hashmap *registry) {
|
|
#ifdef ENABLE_POLKIT
|
|
AsyncPolkitQuery *q;
|
|
|
|
while ((q = hashmap_steal_first(registry)))
|
|
async_polkit_query_free(q);
|
|
|
|
hashmap_free(registry);
|
|
#endif
|
|
}
|
|
|
|
int bus_check_peercred(sd_bus *c) {
|
|
struct ucred ucred;
|
|
socklen_t l;
|
|
int fd;
|
|
|
|
assert(c);
|
|
|
|
fd = sd_bus_get_fd(c);
|
|
if (fd < 0)
|
|
return fd;
|
|
|
|
l = sizeof(struct ucred);
|
|
if (getsockopt(fd, SOL_SOCKET, SO_PEERCRED, &ucred, &l) < 0)
|
|
return -errno;
|
|
|
|
if (l != sizeof(struct ucred))
|
|
return -E2BIG;
|
|
|
|
if (ucred.uid != 0 && ucred.uid != geteuid())
|
|
return -EPERM;
|
|
|
|
return 1;
|
|
}
|
|
|
|
int bus_open_system_systemd(sd_bus **_bus) {
|
|
_cleanup_bus_unref_ sd_bus *bus = NULL;
|
|
int r;
|
|
|
|
assert(_bus);
|
|
|
|
if (geteuid() != 0)
|
|
return sd_bus_open_system(_bus);
|
|
|
|
/* If we are root and kdbus is not available, then let's talk
|
|
* directly to the system instance, instead of going via the
|
|
* bus */
|
|
|
|
#ifdef ENABLE_KDBUS
|
|
r = sd_bus_new(&bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_set_address(bus, KERNEL_SYSTEM_BUS_ADDRESS);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
bus->bus_client = true;
|
|
|
|
r = sd_bus_start(bus);
|
|
if (r >= 0) {
|
|
*_bus = bus;
|
|
bus = NULL;
|
|
return 0;
|
|
}
|
|
|
|
bus = sd_bus_unref(bus);
|
|
#endif
|
|
|
|
r = sd_bus_new(&bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_set_address(bus, "unix:path=/run/systemd/private");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_start(bus);
|
|
if (r < 0)
|
|
return sd_bus_open_system(_bus);
|
|
|
|
r = bus_check_peercred(bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
*_bus = bus;
|
|
bus = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_open_user_systemd(sd_bus **_bus) {
|
|
_cleanup_bus_unref_ sd_bus *bus = NULL;
|
|
_cleanup_free_ char *ee = NULL;
|
|
const char *e;
|
|
int r;
|
|
|
|
/* Try via kdbus first, and then directly */
|
|
|
|
assert(_bus);
|
|
|
|
#ifdef ENABLE_KDBUS
|
|
r = sd_bus_new(&bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (asprintf(&bus->address, KERNEL_USER_BUS_ADDRESS_FMT, getuid()) < 0)
|
|
return -ENOMEM;
|
|
|
|
bus->bus_client = true;
|
|
|
|
r = sd_bus_start(bus);
|
|
if (r >= 0) {
|
|
*_bus = bus;
|
|
bus = NULL;
|
|
return 0;
|
|
}
|
|
|
|
bus = sd_bus_unref(bus);
|
|
#endif
|
|
|
|
e = secure_getenv("XDG_RUNTIME_DIR");
|
|
if (!e)
|
|
return sd_bus_open_user(_bus);
|
|
|
|
ee = bus_address_escape(e);
|
|
if (!ee)
|
|
return -ENOMEM;
|
|
|
|
r = sd_bus_new(&bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
bus->address = strjoin("unix:path=", ee, "/systemd/private", NULL);
|
|
if (!bus->address)
|
|
return -ENOMEM;
|
|
|
|
r = sd_bus_start(bus);
|
|
if (r < 0)
|
|
return sd_bus_open_user(_bus);
|
|
|
|
r = bus_check_peercred(bus);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
*_bus = bus;
|
|
bus = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_print_property(const char *name, sd_bus_message *property, bool all) {
|
|
char type;
|
|
const char *contents;
|
|
int r;
|
|
|
|
assert(name);
|
|
assert(property);
|
|
|
|
r = sd_bus_message_peek_type(property, &type, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch (type) {
|
|
|
|
case SD_BUS_TYPE_STRING: {
|
|
const char *s;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &s);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || !isempty(s)) {
|
|
_cleanup_free_ char *escaped = NULL;
|
|
|
|
escaped = xescape(s, "\n");
|
|
if (!escaped)
|
|
return -ENOMEM;
|
|
|
|
printf("%s=%s\n", name, escaped);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_BOOLEAN: {
|
|
int b;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &b);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%s\n", name, yes_no(b));
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT64: {
|
|
uint64_t u;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &u);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
/* Yes, heuristics! But we can change this check
|
|
* should it turn out to not be sufficient */
|
|
|
|
if (endswith(name, "Timestamp")) {
|
|
char timestamp[FORMAT_TIMESTAMP_MAX], *t;
|
|
|
|
t = format_timestamp(timestamp, sizeof(timestamp), u);
|
|
if (t || all)
|
|
printf("%s=%s\n", name, strempty(t));
|
|
|
|
} else if (strstr(name, "USec")) {
|
|
char timespan[FORMAT_TIMESPAN_MAX];
|
|
|
|
printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u, 0));
|
|
} else
|
|
printf("%s=%llu\n", name, (unsigned long long) u);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_INT64: {
|
|
int64_t i;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &i);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%lld\n", name, (long long) i);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT32: {
|
|
uint32_t u;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &u);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (strstr(name, "UMask") || strstr(name, "Mode"))
|
|
printf("%s=%04o\n", name, u);
|
|
else
|
|
printf("%s=%u\n", name, (unsigned) u);
|
|
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_INT32: {
|
|
int32_t i;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &i);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%i\n", name, (int) i);
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_DOUBLE: {
|
|
double d;
|
|
|
|
r = sd_bus_message_read_basic(property, type, &d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
printf("%s=%g\n", name, d);
|
|
return 1;
|
|
}
|
|
|
|
case SD_BUS_TYPE_ARRAY:
|
|
if (streq(contents, "s")) {
|
|
bool first = true;
|
|
const char *str;
|
|
|
|
r = sd_bus_message_enter_container(property, SD_BUS_TYPE_ARRAY, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while((r = sd_bus_message_read_basic(property, SD_BUS_TYPE_STRING, &str)) > 0) {
|
|
_cleanup_free_ char *escaped = NULL;
|
|
|
|
if (first)
|
|
printf("%s=", name);
|
|
|
|
escaped = xescape(str, "\n ");
|
|
if (!escaped)
|
|
return -ENOMEM;
|
|
|
|
printf("%s%s", first ? "" : " ", escaped);
|
|
|
|
first = false;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (first && all)
|
|
printf("%s=", name);
|
|
if (!first || all)
|
|
puts("");
|
|
|
|
r = sd_bus_message_exit_container(property);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 1;
|
|
|
|
} else if (streq(contents, "y")) {
|
|
const uint8_t *u;
|
|
size_t n;
|
|
|
|
r = sd_bus_message_read_array(property, SD_BUS_TYPE_BYTE, (const void**) &u, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || n > 0) {
|
|
unsigned int i;
|
|
|
|
printf("%s=", name);
|
|
|
|
for (i = 0; i < n; i++)
|
|
printf("%02x", u[i]);
|
|
|
|
puts("");
|
|
}
|
|
|
|
return 1;
|
|
|
|
} else if (streq(contents, "u")) {
|
|
uint32_t *u;
|
|
size_t n;
|
|
|
|
r = sd_bus_message_read_array(property, SD_BUS_TYPE_UINT32, (const void**) &u, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (all || n > 0) {
|
|
unsigned int i;
|
|
|
|
printf("%s=", name);
|
|
|
|
for (i = 0; i < n; i++)
|
|
printf("%08x", u[i]);
|
|
|
|
puts("");
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_print_all_properties(sd_bus *bus, const char *dest, const char *path, char **filter, bool all) {
|
|
_cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(path);
|
|
|
|
r = sd_bus_call_method(bus,
|
|
dest,
|
|
path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
&error,
|
|
&reply,
|
|
"s", "");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
|
|
const char *name;
|
|
const char *contents;
|
|
|
|
r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &name);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (!filter || strv_find(filter, name)) {
|
|
r = sd_bus_message_peek_type(reply, NULL, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = bus_print_property(name, reply, all);
|
|
if (r < 0)
|
|
return r;
|
|
if (r == 0) {
|
|
if (all)
|
|
printf("%s=[unprintable]\n", name);
|
|
/* skip what we didn't read */
|
|
r = sd_bus_message_skip(reply, contents);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
r = sd_bus_message_skip(reply, "v");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_exit_container(reply);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int bus_map_id128(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
|
|
sd_id128_t *p = userdata;
|
|
const void *v;
|
|
size_t n;
|
|
int r;
|
|
|
|
r = sd_bus_message_read_array(m, SD_BUS_TYPE_BYTE, &v, &n);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
if (n == 0)
|
|
*p = SD_ID128_NULL;
|
|
else if (n == 16)
|
|
memcpy((*p).bytes, v, n);
|
|
else
|
|
return -EINVAL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int map_basic(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
|
|
char type;
|
|
int r;
|
|
|
|
r = sd_bus_message_peek_type(m, &type, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
switch (type) {
|
|
case SD_BUS_TYPE_STRING: {
|
|
const char *s;
|
|
char **p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &s);
|
|
if (r < 0)
|
|
break;
|
|
|
|
if (isempty(s))
|
|
break;
|
|
|
|
r = free_and_strdup(p, s);
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_ARRAY: {
|
|
_cleanup_strv_free_ char **l = NULL;
|
|
char ***p = userdata;
|
|
|
|
r = bus_message_read_strv_extend(m, &l);
|
|
if (r < 0)
|
|
break;
|
|
|
|
strv_free(*p);
|
|
*p = l;
|
|
l = NULL;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_BOOLEAN: {
|
|
unsigned b;
|
|
bool *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &b);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = b;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT32: {
|
|
uint64_t u;
|
|
uint32_t *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &u);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = u;
|
|
|
|
break;
|
|
}
|
|
|
|
case SD_BUS_TYPE_UINT64: {
|
|
uint64_t t;
|
|
uint64_t *p = userdata;
|
|
|
|
r = sd_bus_message_read_basic(m, type, &t);
|
|
if (r < 0)
|
|
break;
|
|
|
|
*p = t;
|
|
|
|
break;
|
|
}
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_message_map_all_properties(
|
|
sd_bus_message *m,
|
|
const struct bus_properties_map *map,
|
|
void *userdata) {
|
|
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(map);
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "{sv}");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
while ((r = sd_bus_message_enter_container(m, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
|
|
const struct bus_properties_map *prop;
|
|
const char *member;
|
|
const char *contents;
|
|
void *v;
|
|
unsigned i;
|
|
|
|
r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
for (i = 0, prop = NULL; map[i].member; i++)
|
|
if (streq(map[i].member, member)) {
|
|
prop = &map[i];
|
|
break;
|
|
}
|
|
|
|
if (prop) {
|
|
r = sd_bus_message_peek_type(m, NULL, &contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_VARIANT, contents);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
v = (uint8_t *)userdata + prop->offset;
|
|
if (map[i].set)
|
|
r = prop->set(sd_bus_message_get_bus(m), member, m, &error, v);
|
|
else
|
|
r = map_basic(sd_bus_message_get_bus(m), member, m, &error, v);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
} else {
|
|
r = sd_bus_message_skip(m, "v");
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return sd_bus_message_exit_container(m);
|
|
}
|
|
|
|
int bus_message_map_properties_changed(
|
|
sd_bus_message *m,
|
|
const struct bus_properties_map *map,
|
|
void *userdata) {
|
|
|
|
const char *member;
|
|
int r, invalidated, i;
|
|
|
|
assert(m);
|
|
assert(map);
|
|
|
|
r = bus_message_map_all_properties(m, map, userdata);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "s");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
invalidated = 0;
|
|
while ((r = sd_bus_message_read_basic(m, SD_BUS_TYPE_STRING, &member)) > 0)
|
|
for (i = 0; map[i].member; i++)
|
|
if (streq(map[i].member, member)) {
|
|
++invalidated;
|
|
break;
|
|
}
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return invalidated;
|
|
}
|
|
|
|
int bus_map_all_properties(
|
|
sd_bus *bus,
|
|
const char *destination,
|
|
const char *path,
|
|
const struct bus_properties_map *map,
|
|
void *userdata) {
|
|
|
|
_cleanup_bus_message_unref_ sd_bus_message *m = NULL;
|
|
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(destination);
|
|
assert(path);
|
|
assert(map);
|
|
|
|
r = sd_bus_call_method(
|
|
bus,
|
|
destination,
|
|
path,
|
|
"org.freedesktop.DBus.Properties",
|
|
"GetAll",
|
|
&error,
|
|
&m,
|
|
"s", "");
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return bus_message_map_all_properties(m, map, userdata);
|
|
}
|
|
|
|
int bus_open_transport(BusTransport transport, const char *host, bool user, sd_bus **bus) {
|
|
int r;
|
|
|
|
assert(transport >= 0);
|
|
assert(transport < _BUS_TRANSPORT_MAX);
|
|
assert(bus);
|
|
|
|
assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
|
|
assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP);
|
|
|
|
switch (transport) {
|
|
|
|
case BUS_TRANSPORT_LOCAL:
|
|
if (user)
|
|
r = sd_bus_default_user(bus);
|
|
else
|
|
r = sd_bus_default_system(bus);
|
|
|
|
break;
|
|
|
|
case BUS_TRANSPORT_REMOTE:
|
|
r = sd_bus_open_system_remote(bus, host);
|
|
break;
|
|
|
|
case BUS_TRANSPORT_MACHINE:
|
|
r = sd_bus_open_system_machine(bus, host);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Hmm, unknown transport type.");
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_open_transport_systemd(BusTransport transport, const char *host, bool user, sd_bus **bus) {
|
|
int r;
|
|
|
|
assert(transport >= 0);
|
|
assert(transport < _BUS_TRANSPORT_MAX);
|
|
assert(bus);
|
|
|
|
assert_return((transport == BUS_TRANSPORT_LOCAL) == !host, -EINVAL);
|
|
assert_return(transport == BUS_TRANSPORT_LOCAL || !user, -EOPNOTSUPP);
|
|
|
|
switch (transport) {
|
|
|
|
case BUS_TRANSPORT_LOCAL:
|
|
if (user)
|
|
r = bus_open_user_systemd(bus);
|
|
else
|
|
r = bus_open_system_systemd(bus);
|
|
|
|
break;
|
|
|
|
case BUS_TRANSPORT_REMOTE:
|
|
r = sd_bus_open_system_remote(bus, host);
|
|
break;
|
|
|
|
case BUS_TRANSPORT_MACHINE:
|
|
r = sd_bus_open_system_machine(bus, host);
|
|
break;
|
|
|
|
default:
|
|
assert_not_reached("Hmm, unknown transport type.");
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_property_get_bool(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int b = *(bool*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 'b', &b);
|
|
}
|
|
|
|
#if __SIZEOF_SIZE_T__ != 8
|
|
int bus_property_get_size(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
uint64_t sz = *(size_t*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 't', &sz);
|
|
}
|
|
#endif
|
|
|
|
#if __SIZEOF_LONG__ != 8
|
|
int bus_property_get_long(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
int64_t l = *(long*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 'x', &l);
|
|
}
|
|
|
|
int bus_property_get_ulong(
|
|
sd_bus *bus,
|
|
const char *path,
|
|
const char *interface,
|
|
const char *property,
|
|
sd_bus_message *reply,
|
|
void *userdata,
|
|
sd_bus_error *error) {
|
|
|
|
uint64_t ul = *(unsigned long*) userdata;
|
|
|
|
return sd_bus_message_append_basic(reply, 't', &ul);
|
|
}
|
|
#endif
|
|
|
|
int bus_log_parse_error(int r) {
|
|
return log_error_errno(r, "Failed to parse bus message: %m");
|
|
}
|
|
|
|
int bus_log_create_error(int r) {
|
|
return log_error_errno(r, "Failed to create bus message: %m");
|
|
}
|
|
|
|
int bus_parse_unit_info(sd_bus_message *message, UnitInfo *u) {
|
|
assert(message);
|
|
assert(u);
|
|
|
|
u->machine = NULL;
|
|
|
|
return sd_bus_message_read(
|
|
message,
|
|
"(ssssssouso)",
|
|
&u->id,
|
|
&u->description,
|
|
&u->load_state,
|
|
&u->active_state,
|
|
&u->sub_state,
|
|
&u->following,
|
|
&u->unit_path,
|
|
&u->job_id,
|
|
&u->job_type,
|
|
&u->job_path);
|
|
}
|
|
|
|
int bus_maybe_reply_error(sd_bus_message *m, int r, sd_bus_error *error) {
|
|
assert(m);
|
|
|
|
if (r < 0) {
|
|
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
|
|
sd_bus_reply_method_errno(m, r, error);
|
|
|
|
} else if (sd_bus_error_is_set(error)) {
|
|
if (m->header->type == SD_BUS_MESSAGE_METHOD_CALL)
|
|
sd_bus_reply_method_error(m, error);
|
|
} else
|
|
return r;
|
|
|
|
log_debug("Failed to process message [type=%s sender=%s path=%s interface=%s member=%s signature=%s]: %s",
|
|
bus_message_type_to_string(m->header->type),
|
|
strna(m->sender),
|
|
strna(m->path),
|
|
strna(m->interface),
|
|
strna(m->member),
|
|
strna(m->root_container.signature),
|
|
bus_error_message(error, r));
|
|
|
|
return 1;
|
|
}
|
|
|
|
int bus_append_unit_property_assignment(sd_bus_message *m, const char *assignment) {
|
|
const char *eq, *field;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(assignment);
|
|
|
|
eq = strchr(assignment, '=');
|
|
if (!eq) {
|
|
log_error("Not an assignment: %s", assignment);
|
|
return -EINVAL;
|
|
}
|
|
|
|
field = strndupa(assignment, eq - assignment);
|
|
eq ++;
|
|
|
|
if (streq(field, "CPUQuota")) {
|
|
|
|
if (isempty(eq)) {
|
|
|
|
r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, "CPUQuotaPerSecUSec");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_append(m, "v", "t", USEC_INFINITY);
|
|
|
|
} else if (endswith(eq, "%")) {
|
|
double percent;
|
|
|
|
if (sscanf(eq, "%lf%%", &percent) != 1 || percent <= 0) {
|
|
log_error("CPU quota '%s' invalid.", eq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, "CPUQuotaPerSecUSec");
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
r = sd_bus_message_append(m, "v", "t", (usec_t) percent * USEC_PER_SEC / 100);
|
|
} else {
|
|
log_error("CPU quota needs to be in percent.");
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
return 0;
|
|
}
|
|
|
|
r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field);
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
if (STR_IN_SET(field,
|
|
"CPUAccounting", "MemoryAccounting", "BlockIOAccounting",
|
|
"SendSIGHUP", "SendSIGKILL", "WakeSystem", "DefaultDependencies")) {
|
|
|
|
r = parse_boolean(eq);
|
|
if (r < 0) {
|
|
log_error("Failed to parse boolean assignment %s.", assignment);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "b", r);
|
|
|
|
} else if (streq(field, "MemoryLimit")) {
|
|
off_t bytes;
|
|
|
|
r = parse_size(eq, 1024, &bytes);
|
|
if (r < 0) {
|
|
log_error("Failed to parse bytes specification %s", assignment);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "t", (uint64_t) bytes);
|
|
|
|
} else if (STR_IN_SET(field, "CPUShares", "BlockIOWeight")) {
|
|
uint64_t u;
|
|
|
|
r = safe_atou64(eq, &u);
|
|
if (r < 0) {
|
|
log_error("Failed to parse %s value %s.", field, eq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "t", u);
|
|
|
|
} else if (STR_IN_SET(field, "User", "Group", "DevicePolicy", "KillMode"))
|
|
r = sd_bus_message_append(m, "v", "s", eq);
|
|
|
|
else if (streq(field, "DeviceAllow")) {
|
|
|
|
if (isempty(eq))
|
|
r = sd_bus_message_append(m, "v", "a(ss)", 0);
|
|
else {
|
|
const char *path, *rwm, *e;
|
|
|
|
e = strchr(eq, ' ');
|
|
if (e) {
|
|
path = strndupa(eq, e - eq);
|
|
rwm = e+1;
|
|
} else {
|
|
path = eq;
|
|
rwm = "";
|
|
}
|
|
|
|
if (!path_startswith(path, "/dev")) {
|
|
log_error("%s is not a device file in /dev.", path);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "a(ss)", 1, path, rwm);
|
|
}
|
|
|
|
} else if (STR_IN_SET(field, "BlockIOReadBandwidth", "BlockIOWriteBandwidth")) {
|
|
|
|
if (isempty(eq))
|
|
r = sd_bus_message_append(m, "v", "a(st)", 0);
|
|
else {
|
|
const char *path, *bandwidth, *e;
|
|
off_t bytes;
|
|
|
|
e = strchr(eq, ' ');
|
|
if (e) {
|
|
path = strndupa(eq, e - eq);
|
|
bandwidth = e+1;
|
|
} else {
|
|
log_error("Failed to parse %s value %s.", field, eq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!path_startswith(path, "/dev")) {
|
|
log_error("%s is not a device file in /dev.", path);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = parse_size(bandwidth, 1000, &bytes);
|
|
if (r < 0) {
|
|
log_error("Failed to parse byte value %s.", bandwidth);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "a(st)", 1, path, (uint64_t) bytes);
|
|
}
|
|
|
|
} else if (streq(field, "BlockIODeviceWeight")) {
|
|
|
|
if (isempty(eq))
|
|
r = sd_bus_message_append(m, "v", "a(st)", 0);
|
|
else {
|
|
const char *path, *weight, *e;
|
|
uint64_t u;
|
|
|
|
e = strchr(eq, ' ');
|
|
if (e) {
|
|
path = strndupa(eq, e - eq);
|
|
weight = e+1;
|
|
} else {
|
|
log_error("Failed to parse %s value %s.", field, eq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (!path_startswith(path, "/dev")) {
|
|
log_error("%s is not a device file in /dev.", path);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = safe_atou64(weight, &u);
|
|
if (r < 0) {
|
|
log_error("Failed to parse %s value %s.", field, weight);
|
|
return -EINVAL;
|
|
}
|
|
r = sd_bus_message_append(m, "v", "a(st)", path, u);
|
|
}
|
|
|
|
} else if (rlimit_from_string(field) >= 0) {
|
|
uint64_t rl;
|
|
|
|
if (streq(eq, "infinity"))
|
|
rl = (uint64_t) -1;
|
|
else {
|
|
r = safe_atou64(eq, &rl);
|
|
if (r < 0) {
|
|
log_error("Invalid resource limit: %s", eq);
|
|
return -EINVAL;
|
|
}
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "t", rl);
|
|
|
|
} else if (streq(field, "Nice")) {
|
|
int32_t i;
|
|
|
|
r = safe_atoi32(eq, &i);
|
|
if (r < 0) {
|
|
log_error("Failed to parse %s value %s.", field, eq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "i", i);
|
|
|
|
} else if (streq(field, "Environment")) {
|
|
|
|
r = sd_bus_message_append(m, "v", "as", 1, eq);
|
|
|
|
} else if (streq(field, "KillSignal")) {
|
|
int sig;
|
|
|
|
sig = signal_from_string_try_harder(eq);
|
|
if (sig < 0) {
|
|
log_error("Failed to parse %s value %s.", field, eq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "i", sig);
|
|
|
|
} else if (streq(field, "AccuracySec")) {
|
|
usec_t u;
|
|
|
|
r = parse_sec(eq, &u);
|
|
if (r < 0) {
|
|
log_error("Failed to parse %s value %s", field, eq);
|
|
return -EINVAL;
|
|
}
|
|
|
|
r = sd_bus_message_append(m, "v", "t", u);
|
|
|
|
} else {
|
|
log_error("Unknown assignment %s.", assignment);
|
|
return -EINVAL;
|
|
}
|
|
|
|
if (r < 0)
|
|
return bus_log_create_error(r);
|
|
|
|
return 0;
|
|
}
|
|
|
|
typedef struct BusWaitForJobs {
|
|
sd_bus *bus;
|
|
Set *jobs;
|
|
|
|
char *name;
|
|
char *result;
|
|
|
|
sd_bus_slot *slot_job_removed;
|
|
sd_bus_slot *slot_disconnected;
|
|
} BusWaitForJobs;
|
|
|
|
static int match_disconnected(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
assert(m);
|
|
|
|
log_error("Warning! D-Bus connection terminated.");
|
|
sd_bus_close(sd_bus_message_get_bus(m));
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int match_job_removed(sd_bus_message *m, void *userdata, sd_bus_error *error) {
|
|
const char *path, *unit, *result;
|
|
BusWaitForJobs *d = userdata;
|
|
uint32_t id;
|
|
char *found;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(d);
|
|
|
|
r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
|
|
if (r < 0) {
|
|
bus_log_parse_error(r);
|
|
return 0;
|
|
}
|
|
|
|
found = set_remove(d->jobs, (char*) path);
|
|
if (!found)
|
|
return 0;
|
|
|
|
free(found);
|
|
|
|
if (!isempty(result))
|
|
d->result = strdup(result);
|
|
|
|
if (!isempty(unit))
|
|
d->name = strdup(unit);
|
|
|
|
return 0;
|
|
}
|
|
|
|
void bus_wait_for_jobs_free(BusWaitForJobs *d) {
|
|
if (!d)
|
|
return;
|
|
|
|
set_free_free(d->jobs);
|
|
|
|
sd_bus_slot_unref(d->slot_disconnected);
|
|
sd_bus_slot_unref(d->slot_job_removed);
|
|
|
|
sd_bus_unref(d->bus);
|
|
|
|
free(d->name);
|
|
free(d->result);
|
|
|
|
free(d);
|
|
}
|
|
|
|
int bus_wait_for_jobs_new(sd_bus *bus, BusWaitForJobs **ret) {
|
|
_cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *d = NULL;
|
|
int r;
|
|
|
|
assert(bus);
|
|
assert(ret);
|
|
|
|
d = new0(BusWaitForJobs, 1);
|
|
if (!d)
|
|
return -ENOMEM;
|
|
|
|
d->bus = sd_bus_ref(bus);
|
|
|
|
/* When we are a bus client we match by sender. Direct
|
|
* connections OTOH have no initialized sender field, and
|
|
* hence we ignore the sender then */
|
|
r = sd_bus_add_match(
|
|
bus,
|
|
&d->slot_job_removed,
|
|
bus->bus_client ?
|
|
"type='signal',"
|
|
"sender='org.freedesktop.systemd1',"
|
|
"interface='org.freedesktop.systemd1.Manager',"
|
|
"member='JobRemoved',"
|
|
"path='/org/freedesktop/systemd1'" :
|
|
"type='signal',"
|
|
"interface='org.freedesktop.systemd1.Manager',"
|
|
"member='JobRemoved',"
|
|
"path='/org/freedesktop/systemd1'",
|
|
match_job_removed, d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
r = sd_bus_add_match(
|
|
bus,
|
|
&d->slot_disconnected,
|
|
"type='signal',"
|
|
"sender='org.freedesktop.DBus.Local',"
|
|
"interface='org.freedesktop.DBus.Local',"
|
|
"member='Disconnected'",
|
|
match_disconnected, d);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
*ret = d;
|
|
d = NULL;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_process_wait(sd_bus *bus) {
|
|
int r;
|
|
|
|
for (;;) {
|
|
r = sd_bus_process(bus, NULL);
|
|
if (r < 0)
|
|
return r;
|
|
if (r > 0)
|
|
return 0;
|
|
|
|
r = sd_bus_wait(bus, (uint64_t) -1);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
}
|
|
|
|
static int bus_job_get_service_result(BusWaitForJobs *d, char **result) {
|
|
_cleanup_free_ char *dbus_path = NULL;
|
|
|
|
assert(d);
|
|
assert(d->name);
|
|
assert(result);
|
|
|
|
dbus_path = unit_dbus_path_from_name(d->name);
|
|
if (!dbus_path)
|
|
return -ENOMEM;
|
|
|
|
return sd_bus_get_property_string(d->bus,
|
|
"org.freedesktop.systemd1",
|
|
dbus_path,
|
|
"org.freedesktop.systemd1.Service",
|
|
"Result",
|
|
NULL,
|
|
result);
|
|
}
|
|
|
|
static const struct {
|
|
const char *result, *explanation;
|
|
} explanations [] = {
|
|
{ "resources", "a configured resource limit was exceeded" },
|
|
{ "timeout", "a timeout was exceeded" },
|
|
{ "exit-code", "the control process exited with error code" },
|
|
{ "signal", "a fatal signal was delivered to the control process" },
|
|
{ "core-dump", "a fatal signal was delivered causing the control process to dump core" },
|
|
{ "watchdog", "the service failed to send watchdog ping" },
|
|
{ "start-limit", "start of the service was attempted too often" }
|
|
};
|
|
|
|
static void log_job_error_with_service_result(const char* service, const char *result) {
|
|
_cleanup_free_ char *service_shell_quoted = NULL;
|
|
|
|
assert(service);
|
|
|
|
service_shell_quoted = shell_maybe_quote(service);
|
|
|
|
if (!isempty(result)) {
|
|
unsigned i;
|
|
|
|
for (i = 0; i < ELEMENTSOF(explanations); ++i)
|
|
if (streq(result, explanations[i].result))
|
|
break;
|
|
|
|
if (i < ELEMENTSOF(explanations)) {
|
|
log_error("Job for %s failed because %s. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n",
|
|
service,
|
|
explanations[i].explanation,
|
|
strna(service_shell_quoted));
|
|
|
|
goto finish;
|
|
}
|
|
}
|
|
|
|
log_error("Job for %s failed. See \"systemctl status %s\" and \"journalctl -xe\" for details.\n",
|
|
service,
|
|
strna(service_shell_quoted));
|
|
|
|
finish:
|
|
/* For some results maybe additional explanation is required */
|
|
if (streq_ptr(result, "start-limit"))
|
|
log_info("To force a start use \"systemctl reset-failed %1$s\" followed by \"systemctl start %1$s\" again.",
|
|
strna(service_shell_quoted));
|
|
}
|
|
|
|
static int check_wait_response(BusWaitForJobs *d, bool quiet) {
|
|
int r = 0;
|
|
|
|
assert(d->result);
|
|
|
|
if (!quiet) {
|
|
if (streq(d->result, "canceled"))
|
|
log_error("Job for %s canceled.", strna(d->name));
|
|
else if (streq(d->result, "timeout"))
|
|
log_error("Job for %s timed out.", strna(d->name));
|
|
else if (streq(d->result, "dependency"))
|
|
log_error("A dependency job for %s failed. See 'journalctl -xe' for details.", strna(d->name));
|
|
else if (streq(d->result, "invalid"))
|
|
log_error("Job for %s invalid.", strna(d->name));
|
|
else if (streq(d->result, "assert"))
|
|
log_error("Assertion failed on job for %s.", strna(d->name));
|
|
else if (streq(d->result, "unsupported"))
|
|
log_error("Operation on or unit type of %s not supported on this system.", strna(d->name));
|
|
else if (!streq(d->result, "done") && !streq(d->result, "skipped")) {
|
|
if (d->name) {
|
|
int q;
|
|
_cleanup_free_ char *result = NULL;
|
|
|
|
q = bus_job_get_service_result(d, &result);
|
|
if (q < 0)
|
|
log_debug_errno(q, "Failed to get Result property of service %s: %m", d->name);
|
|
|
|
log_job_error_with_service_result(d->name, result);
|
|
} else
|
|
log_error("Job failed. See \"journalctl -xe\" for details.");
|
|
}
|
|
}
|
|
|
|
if (streq(d->result, "canceled"))
|
|
r = -ECANCELED;
|
|
else if (streq(d->result, "timeout"))
|
|
r = -ETIME;
|
|
else if (streq(d->result, "dependency"))
|
|
r = -EIO;
|
|
else if (streq(d->result, "invalid"))
|
|
r = -ENOEXEC;
|
|
else if (streq(d->result, "assert"))
|
|
r = -EPROTO;
|
|
else if (streq(d->result, "unsupported"))
|
|
r = -EOPNOTSUPP;
|
|
else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
|
|
r = -EIO;
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_wait_for_jobs(BusWaitForJobs *d, bool quiet) {
|
|
int r = 0;
|
|
|
|
assert(d);
|
|
|
|
while (!set_isempty(d->jobs)) {
|
|
int q;
|
|
|
|
q = bus_process_wait(d->bus);
|
|
if (q < 0)
|
|
return log_error_errno(q, "Failed to wait for response: %m");
|
|
|
|
if (d->result) {
|
|
q = check_wait_response(d, quiet);
|
|
/* Return the first error as it is most likely to be
|
|
* meaningful. */
|
|
if (q < 0 && r == 0)
|
|
r = q;
|
|
|
|
log_debug_errno(q, "Got result %s/%m for job %s", strna(d->result), strna(d->name));
|
|
}
|
|
|
|
free(d->name);
|
|
d->name = NULL;
|
|
|
|
free(d->result);
|
|
d->result = NULL;
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
int bus_wait_for_jobs_add(BusWaitForJobs *d, const char *path) {
|
|
int r;
|
|
|
|
assert(d);
|
|
|
|
r = set_ensure_allocated(&d->jobs, &string_hash_ops);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
return set_put_strdup(d->jobs, path);
|
|
}
|
|
|
|
int bus_wait_for_jobs_one(BusWaitForJobs *d, const char *path, bool quiet) {
|
|
int r;
|
|
|
|
r = bus_wait_for_jobs_add(d, path);
|
|
if (r < 0)
|
|
return log_oom();
|
|
|
|
return bus_wait_for_jobs(d, quiet);
|
|
}
|
|
|
|
int bus_deserialize_and_dump_unit_file_changes(sd_bus_message *m, bool quiet) {
|
|
const char *type, *path, *source;
|
|
int r;
|
|
|
|
r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
|
|
if (r < 0)
|
|
return bus_log_parse_error(r);
|
|
|
|
while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
|
|
if (!quiet) {
|
|
if (streq(type, "symlink"))
|
|
log_info("Created symlink from %s to %s.", path, source);
|
|
else
|
|
log_info("Removed symlink %s.", path);
|
|
}
|
|
}
|
|
if (r < 0)
|
|
return bus_log_parse_error(r);
|
|
|
|
r = sd_bus_message_exit_container(m);
|
|
if (r < 0)
|
|
return bus_log_parse_error(r);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bus_path_encode_unique() - encode unique object path
|
|
* @b: bus connection or NULL
|
|
* @prefix: object path prefix
|
|
* @sender_id: unique-name of client, or NULL
|
|
* @external_id: external ID to be chosen by client, or NULL
|
|
* @ret_path: storage for encoded object path pointer
|
|
*
|
|
* Whenever we provide a bus API that allows clients to create and manage
|
|
* server-side objects, we need to provide a unique name for these objects. If
|
|
* we let the server choose the name, we suffer from a race condition: If a
|
|
* client creates an object asynchronously, it cannot destroy that object until
|
|
* it received the method reply. It cannot know the name of the new object,
|
|
* thus, it cannot destroy it. Furthermore, it enforces a round-trip.
|
|
*
|
|
* Therefore, many APIs allow the client to choose the unique name for newly
|
|
* created objects. There're two problems to solve, though:
|
|
* 1) Object names are usually defined via dbus object paths, which are
|
|
* usually globally namespaced. Therefore, multiple clients must be able
|
|
* to choose unique object names without interference.
|
|
* 2) If multiple libraries share the same bus connection, they must be
|
|
* able to choose unique object names without interference.
|
|
* The first problem is solved easily by prefixing a name with the
|
|
* unique-bus-name of a connection. The server side must enforce this and
|
|
* reject any other name. The second problem is solved by providing unique
|
|
* suffixes from within sd-bus.
|
|
*
|
|
* This helper allows clients to create unique object-paths. It uses the
|
|
* template '/prefix/sender_id/external_id' and returns the new path in
|
|
* @ret_path (must be freed by the caller).
|
|
* If @sender_id is NULL, the unique-name of @b is used. If @external_id is
|
|
* NULL, this function allocates a unique suffix via @b (by requesting a new
|
|
* cookie). If both @sender_id and @external_id are given, @b can be passed as
|
|
* NULL.
|
|
*
|
|
* Returns: 0 on success, negative error code on failure.
|
|
*/
|
|
int bus_path_encode_unique(sd_bus *b, const char *prefix, const char *sender_id, const char *external_id, char **ret_path) {
|
|
_cleanup_free_ char *sender_label = NULL, *external_label = NULL;
|
|
char external_buf[DECIMAL_STR_MAX(uint64_t)], *p;
|
|
int r;
|
|
|
|
assert_return(b || (sender_id && external_id), -EINVAL);
|
|
assert_return(object_path_is_valid(prefix), -EINVAL);
|
|
assert_return(ret_path, -EINVAL);
|
|
|
|
if (!sender_id) {
|
|
r = sd_bus_get_unique_name(b, &sender_id);
|
|
if (r < 0)
|
|
return r;
|
|
}
|
|
|
|
if (!external_id) {
|
|
xsprintf(external_buf, "%"PRIu64, ++b->cookie);
|
|
external_id = external_buf;
|
|
}
|
|
|
|
sender_label = bus_label_escape(sender_id);
|
|
if (!sender_label)
|
|
return -ENOMEM;
|
|
|
|
external_label = bus_label_escape(external_id);
|
|
if (!external_label)
|
|
return -ENOMEM;
|
|
|
|
p = strjoin(prefix, "/", sender_label, "/", external_label, NULL);
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
*ret_path = p;
|
|
return 0;
|
|
}
|
|
|
|
/**
|
|
* bus_path_decode_unique() - decode unique object path
|
|
* @path: object path to decode
|
|
* @prefix: object path prefix
|
|
* @ret_sender: output parameter for sender-id label
|
|
* @ret_external: output parameter for external-id label
|
|
*
|
|
* This does the reverse of bus_path_encode_unique() (see its description for
|
|
* details). Both trailing labels, sender-id and external-id, are unescaped and
|
|
* returned in the given output parameters (the caller must free them).
|
|
*
|
|
* Note that this function returns 0 if the path does not match the template
|
|
* (see bus_path_encode_unique()), 1 if it matched.
|
|
*
|
|
* Returns: Negative error code on failure, 0 if the given object path does not
|
|
* match the template (return parameters are set to NULL), 1 if it was
|
|
* parsed successfully (return parameters contain allocated labels).
|
|
*/
|
|
int bus_path_decode_unique(const char *path, const char *prefix, char **ret_sender, char **ret_external) {
|
|
const char *p, *q;
|
|
char *sender, *external;
|
|
|
|
assert(object_path_is_valid(path));
|
|
assert(object_path_is_valid(prefix));
|
|
assert(ret_sender);
|
|
assert(ret_external);
|
|
|
|
p = object_path_startswith(path, prefix);
|
|
if (!p) {
|
|
*ret_sender = NULL;
|
|
*ret_external = NULL;
|
|
return 0;
|
|
}
|
|
|
|
q = strchr(p, '/');
|
|
if (!q) {
|
|
*ret_sender = NULL;
|
|
*ret_external = NULL;
|
|
return 0;
|
|
}
|
|
|
|
sender = bus_label_unescape_n(p, q - p);
|
|
external = bus_label_unescape(q + 1);
|
|
if (!sender || !external) {
|
|
free(sender);
|
|
free(external);
|
|
return -ENOMEM;
|
|
}
|
|
|
|
*ret_sender = sender;
|
|
*ret_external = external;
|
|
return 1;
|
|
}
|