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>
34 #include <systemd/sd-daemon.h>
36 #include <pulse/xmalloc.h>
38 #include <pulsecore/module.h>
39 #include <pulsecore/log.h>
40 #include <pulsecore/hashmap.h>
41 #include <pulsecore/idxset.h>
42 #include <pulsecore/modargs.h>
44 #include "module-systemd-login-symdef.h"
46 PA_MODULE_AUTHOR("Lennart Poettering");
47 PA_MODULE_DESCRIPTION("Create a client for each login session of this user");
48 PA_MODULE_VERSION(PACKAGE_VERSION);
49 PA_MODULE_LOAD_ONCE(TRUE);
51 static const char* const valid_modargs[] = {
63 pa_hashmap *sessions, *previous_sessions;
64 sd_login_monitor *monitor;
68 static int add_session(struct userdata *u, const char *id) {
69 struct session *session;
70 pa_client_new_data data;
72 session = pa_xnew(struct session, 1);
73 session->id = pa_xstrdup(id);
75 pa_client_new_data_init(&data);
76 data.module = u->module;
77 data.driver = __FILE__;
78 pa_proplist_setf(data.proplist, PA_PROP_APPLICATION_NAME, "Login Session %s", id);
79 pa_proplist_sets(data.proplist, "systemd-login.session", id);
80 session->client = pa_client_new(u->core, &data);
81 pa_client_new_data_done(&data);
83 if (!session->client) {
84 pa_xfree(session->id);
89 pa_hashmap_put(u->sessions, session->id, session);
91 pa_log_debug("Added new session %s", id);
95 static void free_session(struct session *session) {
98 pa_log_debug("Removing session %s", session->id);
100 pa_client_free(session->client);
101 pa_xfree(session->id);
105 static int get_session_list(struct userdata *u) {
113 r = sd_uid_get_sessions(getuid(), 0, &sessions);
117 /* We copy all sessions that still exist from one hashmap to the
118 * other and then flush the remaining ones */
120 h = u->previous_sessions;
121 u->previous_sessions = u->sessions;
127 /* Note that the sessions array is allocated with libc's
128 * malloc()/free() calls, hence do not use pa_xfree() to free
131 for (s = sessions; *s; s++) {
132 o = pa_hashmap_remove(u->previous_sessions, *s);
134 pa_hashmap_put(u->sessions, o->id, o);
144 pa_hashmap_remove_all(u->previous_sessions, (pa_free_cb_t) free_session);
149 static void monitor_cb(
153 pa_io_event_flags_t events,
156 struct userdata *u = userdata;
160 sd_login_monitor_flush(u->monitor);
164 int pa__init(pa_module *m) {
165 struct userdata *u = NULL;
167 sd_login_monitor *monitor = NULL;
172 /* If we are not actually booting with systemd become a NOP */
173 if (sd_booted() <= 0)
176 ma = pa_modargs_new(m->argument, valid_modargs);
178 pa_log("Failed to parse module arguments");
182 r = sd_login_monitor_new("session", &monitor);
184 pa_log("Failed to create session monitor: %s", strerror(-r));
188 m->userdata = u = pa_xnew0(struct userdata, 1);
191 u->sessions = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
192 u->previous_sessions = pa_hashmap_new(pa_idxset_string_hash_func, pa_idxset_string_compare_func);
193 u->monitor = monitor;
195 u->io = u->core->mainloop->io_new(u->core->mainloop, sd_login_monitor_get_fd(monitor), PA_IO_EVENT_INPUT, monitor_cb, u);
197 if (get_session_list(u) < 0)
213 void pa__done(pa_module *m) {
215 struct session *session;
224 pa_hashmap_free(u->sessions, (pa_free_cb_t) free_session);
225 pa_hashmap_free(u->previous_sessions, (pa_free_cb_t) free_session);
229 m->core->mainloop->io_free(u->io);
232 sd_login_monitor_unref(u->monitor);