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/***
This file is part of systemd.
Copyright 2016 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 <sd-bus.h>
#include "macro.h"
static bool track_cb_called_x = false;
static bool track_cb_called_y = false;
static int track_cb_x(sd_bus_track *t, void *userdata) {
log_error("TRACK CB X");
assert_se(!track_cb_called_x);
track_cb_called_x = true;
/* This means b's name disappeared. Let's now disconnect, to make sure the track handling on disconnect works
* as it should. */
assert_se(shutdown(sd_bus_get_fd(sd_bus_track_get_bus(t)), SHUT_RDWR) >= 0);
return 1;
}
static int track_cb_y(sd_bus_track *t, void *userdata) {
int r;
log_error("TRACK CB Y");
assert_se(!track_cb_called_y);
track_cb_called_y = true;
/* We got disconnected, let's close everything */
r = sd_event_exit(sd_bus_get_event(sd_bus_track_get_bus(t)), EXIT_SUCCESS);
assert_se(r >= 0);
return 0;
}
int main(int argc, char *argv[]) {
_cleanup_(sd_event_unrefp) sd_event *event = NULL;
_cleanup_(sd_bus_track_unrefp) sd_bus_track *x = NULL, *y = NULL;
_cleanup_(sd_bus_unrefp) sd_bus *a = NULL, *b = NULL;
const char *unique;
int r;
r = sd_event_default(&event);
assert_se(r >= 0);
r = sd_bus_open_system(&a);
if (IN_SET(r, -ECONNREFUSED, -ENOENT)) {
log_info("Failed to connect to bus, skipping tests.");
return EXIT_TEST_SKIP;
}
assert_se(r >= 0);
r = sd_bus_attach_event(a, event, SD_EVENT_PRIORITY_NORMAL);
assert_se(r >= 0);
r = sd_bus_open_system(&b);
assert_se(r >= 0);
r = sd_bus_attach_event(b, event, SD_EVENT_PRIORITY_NORMAL);
assert_se(r >= 0);
/* Watch b's name from a */
r = sd_bus_track_new(a, &x, track_cb_x, NULL);
assert_se(r >= 0);
r = sd_bus_get_unique_name(b, &unique);
assert_se(r >= 0);
r = sd_bus_track_add_name(x, unique);
assert_se(r >= 0);
/* Watch's a's own name from a */
r = sd_bus_track_new(a, &y, track_cb_y, NULL);
assert_se(r >= 0);
r = sd_bus_get_unique_name(a, &unique);
assert_se(r >= 0);
r = sd_bus_track_add_name(y, unique);
assert_se(r >= 0);
/* Now make b's name disappear */
sd_bus_close(b);
r = sd_event_loop(event);
assert_se(r >= 0);
assert_se(track_cb_called_x);
assert_se(track_cb_called_y);
return 0;
}
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