2 * uterm - Linux User-Space Terminal
4 * Copyright (c) 2012 David Herrmann <dh.herrmann@googlemail.com>
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files
8 * (the "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
21 * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
28 * Systemd provides multi-seat support and other helpers that we can use in
37 #include <systemd/sd-daemon.h>
38 #include <systemd/sd-login.h>
40 #include "uterm_monitor.h"
41 #include "uterm_systemd_internal.h"
43 #define LOG_SUBSYSTEM "systemd"
46 sd_login_monitor *mon;
49 int uterm_sd_new(struct uterm_sd **out)
59 log_warning("cannot determine whether system booted with systemd (%d): %s",
63 log_info("system not booted with systemd, disabling multi-seat support");
67 log_info("system booted with systemd, enabling multi-seat support");
69 sd = malloc(sizeof(*sd));
72 memset(sd, 0, sizeof(*sd));
74 ret = sd_login_monitor_new("seat", &sd->mon);
76 log_err("cannot create systemd login monitor (%d): %s",
90 void uterm_sd_free(struct uterm_sd *sd)
95 sd_login_monitor_unref(sd->mon);
99 int uterm_sd_get_fd(struct uterm_sd *sd)
104 return sd_login_monitor_get_fd(sd->mon);
107 void uterm_sd_flush(struct uterm_sd *sd)
112 sd_login_monitor_flush(sd->mon);
115 int uterm_sd_get_seats(struct uterm_sd *sd, char ***seats)
123 ret = sd_get_seats(&s);
125 log_warning("cannot read seat information from systemd: %d",