2 This file is part of PulseAudio.
4 Copyright 2012 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
31 #include <sys/types.h>
33 #include <systemd/sd-login.h>
35 #include <pulse/xmalloc.h>
37 #include <pulsecore/module.h>
38 #include <pulsecore/log.h>
39 #include <pulsecore/hashmap.h>
40 #include <pulsecore/idxset.h>
41 #include <pulsecore/modargs.h>
43 #include "module-systemd-login-symdef.h"
45 PA_MODULE_AUTHOR("Lennart Poettering");
46 PA_MODULE_DESCRIPTION("Create a client for each login session of this user");
47 PA_MODULE_VERSION(PACKAGE_VERSION);
48 PA_MODULE_LOAD_ONCE(true);
50 static const char* const valid_modargs[] = {
62 pa_hashmap *sessions, *previous_sessions;
63 sd_login_monitor *monitor;
67 static int add_session(struct userdata *u, const char *id) {
68 struct session *session;
69 pa_client_new_data data;
71 session = pa_xnew(struct session, 1);
72 session->id = pa_xstrdup(id);
74 pa_client_new_data_init(&data);
75 data.module = u->module;
76 data.driver = __FILE__;
77 pa_proplist_setf(data.proplist, PA_PROP_APPLICATION_NAME, "Login Session %s", id);
78 pa_proplist_sets(data.proplist, "systemd-login.session", id);
79 session->client = pa_client_new(u->core, &data);
80 pa_client_new_data_done(&data);
82 if (!session->client) {
83 pa_xfree(session->id);
88 pa_hashmap_put(u->sessions, session->id, session);
90 pa_log_debug("Added new session %s", id);
94 static void free_session(struct session *session) {
97 pa_log_debug("Removing session %s", session->id);
99 pa_client_free(session->client);
100 pa_xfree(session->id);
104 static int get_session_list(struct userdata *u) {
112 r = sd_uid_get_sessions(getuid(), 0, &sessions);
116 /* We copy all sessions that still exist from one hashmap to the
117 * other and then flush the remaining ones */
119 h = u->previous_sessions;
120 u->previous_sessions = u->sessions;
126 /* Note that the sessions array is allocated with libc's
127 * malloc()/free() calls, hence do not use pa_xfree() to free
130 for (s = sessions; *s; s++) {
131 o = pa_hashmap_remove(u->previous_sessions, *s);
133 pa_hashmap_put(u->sessions, o->id, o);
143 pa_hashmap_remove_all(u->previous_sessions);
148 static void monitor_cb(
152 pa_io_event_flags_t events,
155 struct userdata *u = userdata;
159 sd_login_monitor_flush(u->monitor);
163 int pa__init(pa_module *m) {
164 struct userdata *u = NULL;
166 sd_login_monitor *monitor = NULL;
171 /* If we are not actually running logind become a NOP */
172 if (access("/run/systemd/seats/", F_OK) < 0)
175 ma = pa_modargs_new(m->argument, valid_modargs);
177 pa_log("Failed to parse module arguments");
181 r = sd_login_monitor_new("session", &monitor);
183 pa_log("Failed to create session monitor: %s", strerror(-r));
187 m->userdata = u = pa_xnew0(struct userdata, 1);
190 u->sessions = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) free_session);
191 u->previous_sessions = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) free_session);
192 u->monitor = monitor;
194 u->io = u->core->mainloop->io_new(u->core->mainloop, sd_login_monitor_get_fd(monitor), PA_IO_EVENT_INPUT, monitor_cb, u);
196 if (get_session_list(u) < 0)
212 void pa__done(pa_module *m) {
222 pa_hashmap_free(u->sessions);
223 pa_hashmap_free(u->previous_sessions);
227 m->core->mainloop->io_free(u->io);
230 sd_login_monitor_unref(u->monitor);