4 This file is part of PulseAudio.
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 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
39 #include <sys/types.h>
41 #include <liboil/liboil.h>
43 #ifdef HAVE_SYS_IOCTL_H
44 #include <sys/ioctl.h>
59 #include "../pulsecore/winsock.h"
61 #include <pulse/mainloop.h>
62 #include <pulse/mainloop-signal.h>
63 #include <pulse/timeval.h>
64 #include <pulse/xmalloc.h>
66 #include <pulsecore/core-error.h>
67 #include <pulsecore/core.h>
68 #include <pulsecore/memblock.h>
69 #include <pulsecore/module.h>
70 #include <pulsecore/cli-command.h>
71 #include <pulsecore/log.h>
72 #include <pulsecore/core-util.h>
73 #include <pulsecore/sioman.h>
74 #include <pulsecore/cli-text.h>
75 #include <pulsecore/pid.h>
76 #include <pulsecore/namereg.h>
77 #include <pulsecore/random.h>
81 #include "daemon-conf.h"
82 #include "dumpmodules.h"
86 /* Only one instance of these variables */
87 int allow_severity
= LOG_INFO
;
88 int deny_severity
= LOG_WARNING
;
92 /* padsp looks for this symbol in the running process and disables
93 * itself if it finds it and it is set to 7 (which is actually a bit
94 * mask). For details see padsp. */
95 int __padsp_disabled__
= 7;
100 static void message_cb(pa_mainloop_api
*a
, pa_time_event
*e
, PA_GCC_UNUSED
const struct timeval
*tv
, void *userdata
) {
102 struct timeval tvnext
;
104 while(PeekMessage(&msg
, NULL
, 0, 0, PM_REMOVE
)) {
105 if (msg
.message
== WM_QUIT
)
108 TranslateMessage(&msg
);
109 DispatchMessage(&msg
);
113 pa_timeval_add(pa_gettimeofday(&tvnext
), 100000);
114 a
->time_restart(e
, &tvnext
);
119 static void signal_callback(pa_mainloop_api
*m
, PA_GCC_UNUSED pa_signal_event
*e
, int sig
, void *userdata
) {
120 pa_log_info(__FILE__
": Got signal %s.", pa_strsignal(sig
));
125 pa_module_load(userdata
, "module-cli", NULL
);
131 pa_module_load(userdata
, "module-cli-protocol-unix", NULL
);
137 char *c
= pa_full_status_string(userdata
);
138 pa_log_notice("%s", c
);
147 pa_log_info(__FILE__
": Exiting.");
153 static void close_pipe(int p
[2]) {
161 #define set_env(key, value) putenv(pa_sprintf_malloc("%s=%s", (key), (value)))
163 #if defined(HAVE_PWD_H) && defined(HAVE_GRP_H)
165 static int change_user(void) {
170 /* This function is called only in system-wide mode. It creates a
171 * runtime dir in /var/run/ with proper UID/GID and drops privs
174 if (!(pw
= getpwnam(PA_SYSTEM_USER
))) {
175 pa_log(__FILE__
": Failed to find user '%s'.", PA_SYSTEM_USER
);
179 if (!(gr
= getgrnam(PA_SYSTEM_GROUP
))) {
180 pa_log(__FILE__
": Failed to find group '%s'.", PA_SYSTEM_GROUP
);
184 pa_log_info(__FILE__
": Found user '%s' (UID %lu) and group '%s' (GID %lu).",
185 PA_SYSTEM_USER
, (unsigned long) pw
->pw_uid
,
186 PA_SYSTEM_GROUP
, (unsigned long) gr
->gr_gid
);
188 if (pw
->pw_gid
!= gr
->gr_gid
) {
189 pa_log(__FILE__
": GID of user '%s' and of group '%s' don't match.", PA_SYSTEM_USER
, PA_SYSTEM_GROUP
);
193 if (strcmp(pw
->pw_dir
, PA_SYSTEM_RUNTIME_PATH
) != 0)
194 pa_log_warn(__FILE__
": Warning: home directory of user '%s' is not '%s', ignoring.", PA_SYSTEM_USER
, PA_SYSTEM_RUNTIME_PATH
);
196 if (pa_make_secure_dir(PA_SYSTEM_RUNTIME_PATH
, 0755, pw
->pw_uid
, gr
->gr_gid
) < 0) {
197 pa_log(__FILE__
": Failed to create '%s': %s", PA_SYSTEM_RUNTIME_PATH
, pa_cstrerror(errno
));
201 if (initgroups(PA_SYSTEM_USER
, gr
->gr_gid
) != 0) {
202 pa_log(__FILE__
": Failed to change group list: %s", pa_cstrerror(errno
));
206 #if defined(HAVE_SETRESGID)
207 r
= setresgid(gr
->gr_gid
, gr
->gr_gid
, gr
->gr_gid
);
208 #elif defined(HAVE_SETEGID)
209 if ((r
= setgid(gr
->gr_gid
)) >= 0)
210 r
= setegid(gr
->gr_gid
);
211 #elif defined(HAVE_SETREGID)
212 r
= setregid(gr
->gr_gid
, gr
->gr_gid
);
214 #error "No API to drop priviliges"
218 pa_log(__FILE__
": Failed to change GID: %s", pa_cstrerror(errno
));
222 #if defined(HAVE_SETRESUID)
223 r
= setresuid(pw
->pw_uid
, pw
->pw_uid
, pw
->pw_uid
);
224 #elif defined(HAVE_SETEUID)
225 if ((r
= setuid(pw
->pw_uid
)) >= 0)
226 r
= seteuid(pw
->pw_uid
);
227 #elif defined(HAVE_SETREUID)
228 r
= setreuid(pw
->pw_uid
, pw
->pw_uid
);
230 #error "No API to drop priviliges"
234 pa_log(__FILE__
": Failed to change UID: %s", pa_cstrerror(errno
));
238 set_env("USER", PA_SYSTEM_USER
);
239 set_env("LOGNAME", PA_SYSTEM_GROUP
);
240 set_env("HOME", PA_SYSTEM_RUNTIME_PATH
);
242 /* Relevant for pa_runtime_path() */
243 set_env("PULSE_RUNTIME_PATH", PA_SYSTEM_RUNTIME_PATH
);
244 set_env("PULSE_CONFIG_PATH", PA_SYSTEM_RUNTIME_PATH
);
246 pa_log_info(__FILE__
": Successfully dropped root privileges.");
251 #else /* HAVE_PWD_H && HAVE_GRP_H */
253 static int change_user(void) {
254 pa_log(__FILE__
": System wide mode unsupported on this platform.");
258 #endif /* HAVE_PWD_H && HAVE_GRP_H */
260 static int create_runtime_dir(void) {
263 pa_runtime_path(NULL
, fn
, sizeof(fn
));
265 /* This function is called only when the daemon is started in
266 * per-user mode. We create the runtime directory somewhere in
267 * /tmp/ with the current UID/GID */
269 if (pa_make_secure_dir(fn
, 0700, (uid_t
)-1, (gid_t
)-1) < 0) {
270 pa_log(__FILE__
": Failed to create '%s': %s", fn
, pa_cstrerror(errno
));
277 #ifdef HAVE_SYS_RESOURCE_H
279 static void set_one_rlimit(const pa_rlimit
*r
, int resource
, const char *name
) {
286 rl
.rlim_cur
= rl
.rlim_max
= r
->value
;
288 if (setrlimit(resource
, &rl
) < 0)
289 pa_log_warn(__FILE__
": setrlimit(%s, (%u, %u)) failed: %s", name
, (unsigned) r
->value
, (unsigned) r
->value
, pa_cstrerror(errno
));
292 static void set_all_rlimits(const pa_daemon_conf
*conf
) {
293 set_one_rlimit(&conf
->rlimit_as
, RLIMIT_AS
, "RLIMIT_AS");
294 set_one_rlimit(&conf
->rlimit_core
, RLIMIT_CORE
, "RLIMIT_CORE");
295 set_one_rlimit(&conf
->rlimit_data
, RLIMIT_DATA
, "RLIMIT_DATA");
296 set_one_rlimit(&conf
->rlimit_fsize
, RLIMIT_FSIZE
, "RLIMIT_FSIZE");
297 set_one_rlimit(&conf
->rlimit_nofile
, RLIMIT_NOFILE
, "RLIMIT_NOFILE");
298 set_one_rlimit(&conf
->rlimit_stack
, RLIMIT_STACK
, "RLIMIT_STACK");
300 set_one_rlimit(&conf
->rlimit_nproc
, RLIMIT_NPROC
, "RLIMIT_NPROC");
302 #ifdef RLIMIT_MEMLOCK
303 set_one_rlimit(&conf
->rlimit_memlock
, RLIMIT_MEMLOCK
, "RLIMIT_MEMLOCK");
308 int main(int argc
, char *argv
[]) {
310 pa_strbuf
*buf
= NULL
;
311 pa_daemon_conf
*conf
;
312 pa_mainloop
*mainloop
;
315 int r
, retval
= 1, d
= 0;
316 int daemon_pipe
[2] = { -1, -1 };
317 int suid_root
, real_root
;
318 int valid_pid_file
= 0;
321 gid_t gid
= (gid_t
) -1;
325 pa_time_event
*timer
;
329 setlocale(LC_ALL
, "");
334 real_root
= getuid() == 0;
335 suid_root
= !real_root
&& geteuid() == 0;
337 if (suid_root
&& (pa_own_uid_in_group(PA_REALTIME_GROUP
, &gid
) <= 0 || gid
>= 1000)) {
338 pa_log_warn(__FILE__
": WARNING: called SUID root, but not in group '"PA_REALTIME_GROUP
"'.");
346 LTDL_SET_PRELOADED_SYMBOLS();
354 WSAStartup(MAKEWORD(2, 0), &data
);
360 pa_log_set_ident("pulseaudio");
362 conf
= pa_daemon_conf_new();
364 if (pa_daemon_conf_load(conf
, NULL
) < 0)
367 if (pa_daemon_conf_env(conf
) < 0)
370 if (pa_cmdline_parse(conf
, argc
, argv
, &d
) < 0) {
371 pa_log(__FILE__
": failed to parse command line.");
375 pa_log_set_maximal_level(conf
->log_level
);
376 pa_log_set_target(conf
->auto_log_target
? PA_LOG_STDERR
: conf
->log_target
, NULL
);
378 if (conf
->high_priority
&& conf
->cmd
== PA_CMD_DAEMON
)
386 if (conf
->dl_search_path
)
387 lt_dlsetsearchpath(conf
->dl_search_path
);
390 case PA_CMD_DUMP_MODULES
:
391 pa_dump_modules(conf
, argc
-d
, argv
+d
);
395 case PA_CMD_DUMP_CONF
: {
396 s
= pa_daemon_conf_dump(conf
);
404 pa_cmdline_help(argv
[0]);
408 case PA_CMD_VERSION
:
409 printf(PACKAGE_NAME
" "PACKAGE_VERSION
"\n");
416 if (pa_pid_file_check_running(&pid
) < 0) {
417 pa_log_info(__FILE__
": daemon not running");
419 pa_log_info(__FILE__
": daemon running as PID %u", pid
);
428 if (pa_pid_file_kill(SIGINT
, NULL
) < 0)
429 pa_log(__FILE__
": failed to kill daemon.");
436 assert(conf
->cmd
== PA_CMD_DAEMON
);
439 if (real_root
&& !conf
->system_instance
) {
440 pa_log_warn(__FILE__
": This program is not intended to be run as root (unless --system is specified).");
441 } else if (!real_root
&& conf
->system_instance
) {
442 pa_log(__FILE__
": Root priviliges required.");
446 if (conf
->daemonize
) {
450 if (pa_stdio_acquire() < 0) {
451 pa_log(__FILE__
": failed to acquire stdio.");
456 if (pipe(daemon_pipe
) < 0) {
457 pa_log(__FILE__
": failed to create pipe.");
461 if ((child
= fork()) < 0) {
462 pa_log(__FILE__
": fork() failed: %s", pa_cstrerror(errno
));
469 close(daemon_pipe
[1]);
472 if (pa_loop_read(daemon_pipe
[0], &retval
, sizeof(retval
), NULL
) != sizeof(retval
)) {
473 pa_log(__FILE__
": read() failed: %s", pa_cstrerror(errno
));
478 pa_log(__FILE__
": daemon startup failed.");
480 pa_log_info(__FILE__
": daemon startup successful.");
485 close(daemon_pipe
[0]);
489 if (conf
->auto_log_target
)
490 pa_log_set_target(PA_LOG_SYSLOG
, NULL
);
504 open("/dev/null", O_RDONLY
);
505 open("/dev/null", O_WRONLY
);
506 open("/dev/null", O_WRONLY
);
512 signal(SIGTTOU
, SIG_IGN
);
515 signal(SIGTTIN
, SIG_IGN
);
518 signal(SIGTSTP
, SIG_IGN
);
522 if ((tty_fd
= open("/dev/tty", O_RDWR
)) >= 0) {
523 ioctl(tty_fd
, TIOCNOTTY
, (char*) 0);
532 if (conf
->system_instance
) {
533 if (change_user() < 0)
535 } else if (create_runtime_dir() < 0)
538 if (conf
->use_pid_file
) {
539 if (pa_pid_file_create() < 0) {
540 pa_log(__FILE__
": pa_pid_file_create() failed.");
543 pa_loop_write(daemon_pipe
[1], &retval
, sizeof(retval
), NULL
);
551 #ifdef HAVE_SYS_RESOURCE_H
552 set_all_rlimits(conf
);
556 signal(SIGPIPE
, SIG_IGN
);
559 mainloop
= pa_mainloop_new();
562 c
= pa_core_new(pa_mainloop_get_api(mainloop
));
564 c
->is_system_instance
= !!conf
->system_instance
;
566 r
= pa_signal_init(pa_mainloop_get_api(mainloop
));
568 pa_signal_new(SIGINT
, signal_callback
, c
);
569 pa_signal_new(SIGTERM
, signal_callback
, c
);
572 pa_signal_new(SIGUSR1
, signal_callback
, c
);
575 pa_signal_new(SIGUSR2
, signal_callback
, c
);
578 pa_signal_new(SIGHUP
, signal_callback
, c
);
582 timer
= pa_mainloop_get_api(mainloop
)->time_new(
583 pa_mainloop_get_api(mainloop
), pa_gettimeofday(&tv
), message_cb
, NULL
);
588 c
->running_as_daemon
= 1;
592 if (!conf
->no_cpu_limit
) {
593 r
= pa_cpu_limit_init(pa_mainloop_get_api(mainloop
));
597 buf
= pa_strbuf_new();
598 if (conf
->default_script_file
)
599 r
= pa_cli_command_execute_file(c
, conf
->default_script_file
, buf
, &conf
->fail
);
602 r
= pa_cli_command_execute(c
, conf
->script_commands
, buf
, &conf
->fail
);
603 pa_log_error("%s", s
= pa_strbuf_tostring_free(buf
));
606 if (r
< 0 && conf
->fail
) {
607 pa_log(__FILE__
": failed to initialize daemon.");
610 pa_loop_write(daemon_pipe
[1], &retval
, sizeof(retval
), NULL
);
612 } else if (!c
->modules
|| pa_idxset_size(c
->modules
) == 0) {
613 pa_log(__FILE__
": daemon startup without any loaded modules, refusing to work.");
616 pa_loop_write(daemon_pipe
[1], &retval
, sizeof(retval
), NULL
);
623 pa_loop_write(daemon_pipe
[1], &retval
, sizeof(retval
), NULL
);
626 c
->disallow_module_loading
= conf
->disallow_module_loading
;
627 c
->exit_idle_time
= conf
->exit_idle_time
;
628 c
->module_idle_time
= conf
->module_idle_time
;
629 c
->scache_idle_time
= conf
->scache_idle_time
;
630 c
->resample_method
= conf
->resample_method
;
632 if (c
->default_sink_name
&&
633 pa_namereg_get(c
, c
->default_sink_name
, PA_NAMEREG_SINK
, 1) == NULL
) {
634 pa_log_error("%s : Fatal error. Default sink name (%s) does not exist in name register.", __FILE__
, c
->default_sink_name
);
637 pa_log_info(__FILE__
": Daemon startup complete.");
638 if (pa_mainloop_run(mainloop
, &retval
) < 0)
640 pa_log_info(__FILE__
": Daemon shutdown initiated.");
645 pa_mainloop_get_api(mainloop
)->time_free(timer
);
650 if (!conf
->no_cpu_limit
)
654 pa_mainloop_free(mainloop
);
656 pa_log_info(__FILE__
": Daemon terminated.");
661 pa_daemon_conf_free(conf
);
664 pa_pid_file_remove();
666 close_pipe(daemon_pipe
);