code.delx.au - pulseaudio/blob - src/daemon/main.c

   1 /***
   2   This file is part of PulseAudio.
   3
   4   Copyright 2004-2006 Lennart Poettering
   5   Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB
   6
   7   PulseAudio is free software; you can redistribute it and/or modify
   8   it under the terms of the GNU Lesser General Public License as published
   9   by the Free Software Foundation; either version 2.1 of the License,
  10   or (at your option) any later version.
  11
  12   PulseAudio is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with PulseAudio; if not, write to the Free Software
  19   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  20   USA.
  21 ***/
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include <config.h>
  25 #endif
  26
  27 #include <unistd.h>
  28 #include <errno.h>
  29 #include <string.h>
  30 #include <stdlib.h>
  31 #include <stdio.h>
  32 #include <signal.h>
  33 #include <stddef.h>
  34 #include <ltdl.h>
  35 #include <limits.h>
  36 #include <fcntl.h>
  37 #include <unistd.h>
  38 #include <locale.h>
  39 #include <sys/types.h>
  40 #include <sys/stat.h>
  41
  42 #include <liboil/liboil.h>
  43
  44 #ifdef HAVE_SYS_MMAN_H
  45 #include <sys/mman.h>
  46 #endif
  47
  48 #ifdef HAVE_SYS_IOCTL_H
  49 #include <sys/ioctl.h>
  50 #endif
  51
  52 #ifdef HAVE_PWD_H
  53 #include <pwd.h>
  54 #endif
  55 #ifdef HAVE_GRP_H
  56 #include <grp.h>
  57 #endif
  58
  59 #ifdef HAVE_LIBWRAP
  60 #include <syslog.h>
  61 #include <tcpd.h>
  62 #endif
  63
  64 #ifdef HAVE_DBUS
  65 #include <dbus/dbus.h>
  66 #endif
  67
  68 #ifdef __linux__
  69 #include <sys/personality.h>
  70 #endif
  71
  72 #include <pulse/mainloop.h>
  73 #include <pulse/mainloop-signal.h>
  74 #include <pulse/timeval.h>
  75 #include <pulse/xmalloc.h>
  76 #include <pulse/i18n.h>
  77
  78 #include <pulsecore/lock-autospawn.h>
  79 #include <pulsecore/winsock.h>
  80 #include <pulsecore/core-error.h>
  81 #include <pulsecore/core-rtclock.h>
  82 #include <pulsecore/core.h>
  83 #include <pulsecore/memblock.h>
  84 #include <pulsecore/module.h>
  85 #include <pulsecore/cli-command.h>
  86 #include <pulsecore/log.h>
  87 #include <pulsecore/core-util.h>
  88 #include <pulsecore/sioman.h>
  89 #include <pulsecore/cli-text.h>
  90 #include <pulsecore/pid.h>
  91 #include <pulsecore/namereg.h>
  92 #include <pulsecore/random.h>
  93 #include <pulsecore/macro.h>
  94 #include <pulsecore/mutex.h>
  95 #include <pulsecore/thread.h>
  96 #include <pulsecore/once.h>
  97 #include <pulsecore/shm.h>
  98 #include <pulsecore/memtrap.h>
  99 #ifdef HAVE_DBUS
 100 #include <pulsecore/dbus-shared.h>
 101 #endif
 102
 103 #include "cmdline.h"
 104 #include "cpulimit.h"
 105 #include "daemon-conf.h"
 106 #include "dumpmodules.h"
 107 #include "caps.h"
 108 #include "ltdl-bind-now.h"
 109
 110 #ifdef HAVE_LIBWRAP
 111 /* Only one instance of these variables */
 112 int allow_severity = LOG_INFO;
 113 int deny_severity = LOG_WARNING;
 114 #endif
 115
 116 #ifdef HAVE_OSS
 117 /* padsp looks for this symbol in the running process and disables
 118  * itself if it finds it and it is set to 7 (which is actually a bit
 119  * mask). For details see padsp. */
 120 int __padsp_disabled__ = 7;
 121 #endif
 122
 123 #ifdef OS_IS_WIN32
 124
 125 static void message_cb(pa_mainloop_api*a, pa_time_event*e, const struct timeval *tv, void *userdata) {
 126     MSG msg;
 127     struct timeval tvnext;
 128
 129     while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
 130         if (msg.message == WM_QUIT)
 131             raise(SIGTERM);
 132         else {
 133             TranslateMessage(&msg);
 134             DispatchMessage(&msg);
 135         }
 136     }
 137
 138     pa_timeval_add(pa_gettimeofday(&tvnext), 100000);
 139     a->rtclock_time_restart(e, &tvnext);
 140 }
 141
 142 #endif
 143
 144 static void signal_callback(pa_mainloop_api*m, pa_signal_event *e, int sig, void *userdata) {
 145     pa_log_info(_("Got signal %s."), pa_sig2str(sig));
 146
 147     switch (sig) {
 148 #ifdef SIGUSR1
 149         case SIGUSR1:
 150             pa_module_load(userdata, "module-cli", NULL);
 151             break;
 152 #endif
 153
 154 #ifdef SIGUSR2
 155         case SIGUSR2:
 156             pa_module_load(userdata, "module-cli-protocol-unix", NULL);
 157             break;
 158 #endif
 159
 160 #ifdef SIGHUP
 161         case SIGHUP: {
 162             char *c = pa_full_status_string(userdata);
 163             pa_log_notice("%s", c);
 164             pa_xfree(c);
 165             return;
 166         }
 167 #endif
 168
 169         case SIGINT:
 170         case SIGTERM:
 171         default:
 172             pa_log_info(_("Exiting."));
 173             m->quit(m, 1);
 174             break;
 175     }
 176 }
 177
 178 #if defined(HAVE_PWD_H) && defined(HAVE_GRP_H)
 179
 180 static int change_user(void) {
 181     struct passwd *pw;
 182     struct group * gr;
 183     int r;
 184
 185     /* This function is called only in system-wide mode. It creates a
 186      * runtime dir in /var/run/ with proper UID/GID and drops privs
 187      * afterwards. */
 188
 189     if (!(pw = getpwnam(PA_SYSTEM_USER))) {
 190         pa_log(_("Failed to find user '%s'."), PA_SYSTEM_USER);
 191         return -1;
 192     }
 193
 194     if (!(gr = getgrnam(PA_SYSTEM_GROUP))) {
 195         pa_log(_("Failed to find group '%s'."), PA_SYSTEM_GROUP);
 196         return -1;
 197     }
 198
 199     pa_log_info(_("Found user '%s' (UID %lu) and group '%s' (GID %lu)."),
 200                 PA_SYSTEM_USER, (unsigned long) pw->pw_uid,
 201                 PA_SYSTEM_GROUP, (unsigned long) gr->gr_gid);
 202
 203     if (pw->pw_gid != gr->gr_gid) {
 204         pa_log(_("GID of user '%s' and of group '%s' don't match."), PA_SYSTEM_USER, PA_SYSTEM_GROUP);
 205         return -1;
 206     }
 207
 208     if (strcmp(pw->pw_dir, PA_SYSTEM_RUNTIME_PATH) != 0)
 209         pa_log_warn(_("Home directory of user '%s' is not '%s', ignoring."), PA_SYSTEM_USER, PA_SYSTEM_RUNTIME_PATH);
 210
 211     if (pa_make_secure_dir(PA_SYSTEM_RUNTIME_PATH, 0755, pw->pw_uid, gr->gr_gid) < 0) {
 212         pa_log(_("Failed to create '%s': %s"), PA_SYSTEM_RUNTIME_PATH, pa_cstrerror(errno));
 213         return -1;
 214     }
 215
 216     if (pa_make_secure_dir(PA_SYSTEM_STATE_PATH, 0700, pw->pw_uid, gr->gr_gid) < 0) {
 217         pa_log(_("Failed to create '%s': %s"), PA_SYSTEM_STATE_PATH, pa_cstrerror(errno));
 218         return -1;
 219     }
 220
 221     /* We don't create the config dir here, because we don't need to write to it */
 222
 223     if (initgroups(PA_SYSTEM_USER, gr->gr_gid) != 0) {
 224         pa_log(_("Failed to change group list: %s"), pa_cstrerror(errno));
 225         return -1;
 226     }
 227
 228 #if defined(HAVE_SETRESGID)
 229     r = setresgid(gr->gr_gid, gr->gr_gid, gr->gr_gid);
 230 #elif defined(HAVE_SETEGID)
 231     if ((r = setgid(gr->gr_gid)) >= 0)
 232         r = setegid(gr->gr_gid);
 233 #elif defined(HAVE_SETREGID)
 234     r = setregid(gr->gr_gid, gr->gr_gid);
 235 #else
 236 #error "No API to drop privileges"
 237 #endif
 238
 239     if (r < 0) {
 240         pa_log(_("Failed to change GID: %s"), pa_cstrerror(errno));
 241         return -1;
 242     }
 243
 244 #if defined(HAVE_SETRESUID)
 245     r = setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid);
 246 #elif defined(HAVE_SETEUID)
 247     if ((r = setuid(pw->pw_uid)) >= 0)
 248         r = seteuid(pw->pw_uid);
 249 #elif defined(HAVE_SETREUID)
 250     r = setreuid(pw->pw_uid, pw->pw_uid);
 251 #else
 252 #error "No API to drop privileges"
 253 #endif
 254
 255     if (r < 0) {
 256         pa_log(_("Failed to change UID: %s"), pa_cstrerror(errno));
 257         return -1;
 258     }
 259
 260     pa_set_env("USER", PA_SYSTEM_USER);
 261     pa_set_env("USERNAME", PA_SYSTEM_USER);
 262     pa_set_env("LOGNAME", PA_SYSTEM_USER);
 263     pa_set_env("HOME", PA_SYSTEM_RUNTIME_PATH);
 264
 265     /* Relevant for pa_runtime_path() */
 266     pa_set_env("PULSE_RUNTIME_PATH", PA_SYSTEM_RUNTIME_PATH);
 267     pa_set_env("PULSE_CONFIG_PATH", PA_SYSTEM_CONFIG_PATH);
 268     pa_set_env("PULSE_STATE_PATH", PA_SYSTEM_STATE_PATH);
 269
 270     pa_log_info(_("Successfully dropped root privileges."));
 271
 272     return 0;
 273 }
 274
 275 #else /* HAVE_PWD_H && HAVE_GRP_H */
 276
 277 static int change_user(void) {
 278     pa_log(_("System wide mode unsupported on this platform."));
 279     return -1;
 280 }
 281
 282 #endif /* HAVE_PWD_H && HAVE_GRP_H */
 283
 284 #ifdef HAVE_SYS_RESOURCE_H
 285
 286 static int set_one_rlimit(const pa_rlimit *r, int resource, const char *name) {
 287     struct rlimit rl;
 288     pa_assert(r);
 289
 290     if (!r->is_set)
 291         return 0;
 292
 293     rl.rlim_cur = rl.rlim_max = r->value;
 294
 295     if (setrlimit(resource, &rl) < 0) {
 296         pa_log_info(_("setrlimit(%s, (%u, %u)) failed: %s"), name, (unsigned) r->value, (unsigned) r->value, pa_cstrerror(errno));
 297         return -1;
 298     }
 299
 300     return 0;
 301 }
 302
 303 static void set_all_rlimits(const pa_daemon_conf *conf) {
 304     set_one_rlimit(&conf->rlimit_fsize, RLIMIT_FSIZE, "RLIMIT_FSIZE");
 305     set_one_rlimit(&conf->rlimit_data, RLIMIT_DATA, "RLIMIT_DATA");
 306     set_one_rlimit(&conf->rlimit_stack, RLIMIT_STACK, "RLIMIT_STACK");
 307     set_one_rlimit(&conf->rlimit_core, RLIMIT_CORE, "RLIMIT_CORE");
 308 #ifdef RLIMIT_RSS
 309     set_one_rlimit(&conf->rlimit_rss, RLIMIT_RSS, "RLIMIT_RSS");
 310 #endif
 311 #ifdef RLIMIT_NPROC
 312     set_one_rlimit(&conf->rlimit_nproc, RLIMIT_NPROC, "RLIMIT_NPROC");
 313 #endif
 314 #ifdef RLIMIT_NOFILE
 315     set_one_rlimit(&conf->rlimit_nofile, RLIMIT_NOFILE, "RLIMIT_NOFILE");
 316 #endif
 317 #ifdef RLIMIT_MEMLOCK
 318     set_one_rlimit(&conf->rlimit_memlock, RLIMIT_MEMLOCK, "RLIMIT_MEMLOCK");
 319 #endif
 320 #ifdef RLIMIT_AS
 321     set_one_rlimit(&conf->rlimit_as, RLIMIT_AS, "RLIMIT_AS");
 322 #endif
 323 #ifdef RLIMIT_LOCKS
 324     set_one_rlimit(&conf->rlimit_locks, RLIMIT_LOCKS, "RLIMIT_LOCKS");
 325 #endif
 326 #ifdef RLIMIT_SIGPENDING
 327     set_one_rlimit(&conf->rlimit_sigpending, RLIMIT_SIGPENDING, "RLIMIT_SIGPENDING");
 328 #endif
 329 #ifdef RLIMIT_MSGQUEUE
 330     set_one_rlimit(&conf->rlimit_msgqueue, RLIMIT_MSGQUEUE, "RLIMIT_MSGQUEUE");
 331 #endif
 332 #ifdef RLIMIT_NICE
 333     set_one_rlimit(&conf->rlimit_nice, RLIMIT_NICE, "RLIMIT_NICE");
 334 #endif
 335 #ifdef RLIMIT_RTPRIO
 336     set_one_rlimit(&conf->rlimit_rtprio, RLIMIT_RTPRIO, "RLIMIT_RTPRIO");
 337 #endif
 338 #ifdef RLIMIT_RTTIME
 339     set_one_rlimit(&conf->rlimit_rttime, RLIMIT_RTTIME, "RLIMIT_RTTIME");
 340 #endif
 341 }
 342 #endif
 343
 344 #ifdef HAVE_DBUS
 345 static pa_dbus_connection *register_dbus(pa_core *c) {
 346     DBusError error;
 347     pa_dbus_connection *conn;
 348
 349     dbus_error_init(&error);
 350
 351     if (!(conn = pa_dbus_bus_get(c, pa_in_system_mode() ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &error)) || dbus_error_is_set(&error)) {
 352         pa_log_warn("Unable to contact D-Bus: %s: %s", error.name, error.message);
 353         goto fail;
 354     }
 355
 356     if (dbus_bus_request_name(pa_dbus_connection_get(conn), "org.pulseaudio.Server", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error) == DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
 357         pa_log_debug("Got org.pulseaudio.Server!");
 358         return conn;
 359     }
 360
 361     if (dbus_error_is_set(&error))
 362         pa_log_warn("Failed to acquire org.pulseaudio.Server: %s: %s", error.name, error.message);
 363     else
 364         pa_log_warn("D-Bus name org.pulseaudio.Server already taken. Weird shit!");
 365
 366     /* PA cannot be started twice by the same user and hence we can
 367      * ignore mostly the case that org.pulseaudio.Server is already
 368      * taken. */
 369
 370 fail:
 371
 372     if (conn)
 373         pa_dbus_connection_unref(conn);
 374
 375     dbus_error_free(&error);
 376     return NULL;
 377 }
 378 #endif
 379
 380 int main(int argc, char *argv[]) {
 381     pa_core *c = NULL;
 382     pa_strbuf *buf = NULL;
 383     pa_daemon_conf *conf = NULL;
 384     pa_mainloop *mainloop = NULL;
 385     char *s;
 386     int r = 0, retval = 1, d = 0;
 387     pa_bool_t valid_pid_file = FALSE;
 388     pa_bool_t ltdl_init = FALSE;
 389     int passed_fd = -1;
 390     const char *e;
 391 #ifdef HAVE_FORK
 392     int daemon_pipe[2] = { -1, -1 };
 393 #endif
 394 #ifdef OS_IS_WIN32
 395     pa_time_event *win32_timer;
 396     struct timeval win32_tv;
 397 #endif
 398     int autospawn_fd = -1;
 399     pa_bool_t autospawn_locked = FALSE;
 400 #ifdef HAVE_DBUS
 401     pa_dbus_connection *dbus = NULL;
 402 #endif
 403
 404     pa_log_set_ident("pulseaudio");
 405     pa_log_set_level(PA_LOG_NOTICE);
 406     pa_log_set_flags(PA_LOG_COLORS|PA_LOG_PRINT_FILE|PA_LOG_PRINT_LEVEL, PA_LOG_RESET);
 407
 408 #if defined(__linux__) && defined(__OPTIMIZE__)
 409     /*
 410        Disable lazy relocations to make usage of external libraries
 411        more deterministic for our RT threads. We abuse __OPTIMIZE__ as
 412        a check whether we are a debug build or not.
 413     */
 414
 415     if (!getenv("LD_BIND_NOW")) {
 416         char *rp;
 417
 418         /* We have to execute ourselves, because the libc caches the
 419          * value of $LD_BIND_NOW on initialization. */
 420
 421         pa_set_env("LD_BIND_NOW", "1");
 422
 423         if ((rp = pa_readlink("/proc/self/exe")))
 424             pa_assert_se(execv(rp, argv) == 0);
 425         else
 426             pa_log_warn("Couldn't read /proc/self/exe, cannot self execute. Running in a chroot()?");
 427     }
 428 #endif
 429
 430     if ((e = getenv("PULSE_PASSED_FD"))) {
 431         passed_fd = atoi(e);
 432
 433         if (passed_fd <= 2)
 434             passed_fd = -1;
 435     }
 436
 437     /* We might be autospawned, in which case have no idea in which
 438      * context we have been started. Let's cleanup our execution
 439      * context as good as possible */
 440
 441 #ifdef __linux__
 442     if (personality(PER_LINUX) < 0)
 443         pa_log_warn("Uh, personality() failed: %s", pa_cstrerror(errno));
 444 #endif
 445
 446     pa_drop_root();
 447     pa_close_all(passed_fd, -1);
 448     pa_reset_sigs(-1);
 449     pa_unblock_sigs(-1);
 450
 451     setlocale(LC_ALL, "");
 452     pa_init_i18n();
 453
 454     conf = pa_daemon_conf_new();
 455
 456     if (pa_daemon_conf_load(conf, NULL) < 0)
 457         goto finish;
 458
 459     if (pa_daemon_conf_env(conf) < 0)
 460         goto finish;
 461
 462     if (pa_cmdline_parse(conf, argc, argv, &d) < 0) {
 463         pa_log(_("Failed to parse command line."));
 464         goto finish;
 465     }
 466
 467     pa_log_set_level(conf->log_level);
 468     pa_log_set_target(conf->auto_log_target ? PA_LOG_STDERR : conf->log_target);
 469     if (conf->log_meta)
 470         pa_log_set_flags(PA_LOG_PRINT_META, PA_LOG_SET);
 471     if (conf->log_time)
 472         pa_log_set_flags(PA_LOG_PRINT_TIME, PA_LOG_SET);
 473     pa_log_set_show_backtrace(conf->log_backtrace);
 474
 475     LTDL_SET_PRELOADED_SYMBOLS();
 476     pa_ltdl_init();
 477     ltdl_init = TRUE;
 478
 479     if (conf->dl_search_path)
 480         lt_dlsetsearchpath(conf->dl_search_path);
 481
 482 #ifdef OS_IS_WIN32
 483     {
 484         WSADATA data;
 485         WSAStartup(MAKEWORD(2, 0), &data);
 486     }
 487 #endif
 488
 489     pa_random_seed();
 490
 491     switch (conf->cmd) {
 492         case PA_CMD_DUMP_MODULES:
 493             pa_dump_modules(conf, argc-d, argv+d);
 494             retval = 0;
 495             goto finish;
 496
 497         case PA_CMD_DUMP_CONF: {
 498             s = pa_daemon_conf_dump(conf);
 499             fputs(s, stdout);
 500             pa_xfree(s);
 501             retval = 0;
 502             goto finish;
 503         }
 504
 505         case PA_CMD_DUMP_RESAMPLE_METHODS: {
 506             int i;
 507
 508             for (i = 0; i < PA_RESAMPLER_MAX; i++)
 509                 if (pa_resample_method_supported(i))
 510                     printf("%s\n", pa_resample_method_to_string(i));
 511
 512             retval = 0;
 513             goto finish;
 514         }
 515
 516         case PA_CMD_HELP :
 517             pa_cmdline_help(argv[0]);
 518             retval = 0;
 519             goto finish;
 520
 521         case PA_CMD_VERSION :
 522             printf(PACKAGE_NAME" "PACKAGE_VERSION"\n");
 523             retval = 0;
 524             goto finish;
 525
 526         case PA_CMD_CHECK: {
 527             pid_t pid;
 528
 529             if (pa_pid_file_check_running(&pid, "pulseaudio") < 0)
 530                 pa_log_info(_("Daemon not running"));
 531             else {
 532                 pa_log_info(_("Daemon running as PID %u"), pid);
 533                 retval = 0;
 534             }
 535
 536             goto finish;
 537
 538         }
 539         case PA_CMD_KILL:
 540
 541             if (pa_pid_file_kill(SIGINT, NULL, "pulseaudio") < 0)
 542                 pa_log(_("Failed to kill daemon: %s"), pa_cstrerror(errno));
 543             else
 544                 retval = 0;
 545
 546             goto finish;
 547
 548         case PA_CMD_CLEANUP_SHM:
 549
 550             if (pa_shm_cleanup() >= 0)
 551                 retval = 0;
 552
 553             goto finish;
 554
 555         default:
 556             pa_assert(conf->cmd == PA_CMD_DAEMON || conf->cmd == PA_CMD_START);
 557     }
 558
 559     if (getuid() == 0 && !conf->system_instance)
 560         pa_log_warn(_("This program is not intended to be run as root (unless --system is specified)."));
 561     else if (getuid() != 0 && conf->system_instance) {
 562         pa_log(_("Root privileges required."));
 563         goto finish;
 564     }
 565
 566     if (conf->cmd == PA_CMD_START && conf->system_instance) {
 567         pa_log(_("--start not supported for system instances."));
 568         goto finish;
 569     }
 570
 571     if (conf->system_instance && !conf->disallow_exit)
 572         pa_log_warn(_("Running in system mode, but --disallow-exit not set!"));
 573
 574     if (conf->system_instance && !conf->disallow_module_loading)
 575         pa_log_warn(_("Running in system mode, but --disallow-module-loading not set!"));
 576
 577     if (conf->system_instance && !conf->disable_shm) {
 578         pa_log_notice(_("Running in system mode, forcibly disabling SHM mode!"));
 579         conf->disable_shm = TRUE;
 580     }
 581
 582     if (conf->system_instance && conf->exit_idle_time >= 0) {
 583         pa_log_notice(_("Running in system mode, forcibly disabling exit idle time!"));
 584         conf->exit_idle_time = -1;
 585     }
 586
 587     if (conf->cmd == PA_CMD_START) {
 588         /* If we shall start PA only when it is not running yet, we
 589          * first take the autospawn lock to make things
 590          * synchronous. */
 591
 592         if ((autospawn_fd = pa_autospawn_lock_init()) < 0) {
 593             pa_log("Failed to initialize autospawn lock");
 594             goto finish;
 595         }
 596
 597         if ((pa_autospawn_lock_acquire(TRUE) < 0)) {
 598             pa_log("Failed to acquire autospawn lock");
 599             goto finish;
 600         }
 601
 602         autospawn_locked = TRUE;
 603     }
 604
 605     if (conf->daemonize) {
 606         pid_t child;
 607         int tty_fd;
 608
 609         if (pa_stdio_acquire() < 0) {
 610             pa_log(_("Failed to acquire stdio."));
 611             goto finish;
 612         }
 613
 614 #ifdef HAVE_FORK
 615         if (pipe(daemon_pipe) < 0) {
 616             pa_log(_("pipe failed: %s"), pa_cstrerror(errno));
 617             goto finish;
 618         }
 619
 620         if ((child = fork()) < 0) {
 621             pa_log(_("fork() failed: %s"), pa_cstrerror(errno));
 622             goto finish;
 623         }
 624
 625         if (child != 0) {
 626             ssize_t n;
 627             /* Father */
 628
 629             pa_assert_se(pa_close(daemon_pipe[1]) == 0);
 630             daemon_pipe[1] = -1;
 631
 632             if ((n = pa_loop_read(daemon_pipe[0], &retval, sizeof(retval), NULL)) != sizeof(retval)) {
 633
 634                 if (n < 0)
 635                     pa_log(_("read() failed: %s"), pa_cstrerror(errno));
 636
 637                 retval = 1;
 638             }
 639
 640             if (retval)
 641                 pa_log(_("Daemon startup failed."));
 642             else
 643                 pa_log_info(_("Daemon startup successful."));
 644
 645             goto finish;
 646         }
 647
 648         if (autospawn_fd >= 0) {
 649             /* The lock file is unlocked from the parent, so we need
 650              * to close it in the child */
 651
 652             pa_autospawn_lock_release();
 653             pa_autospawn_lock_done(TRUE);
 654
 655             autospawn_locked = FALSE;
 656             autospawn_fd = -1;
 657         }
 658
 659         pa_assert_se(pa_close(daemon_pipe[0]) == 0);
 660         daemon_pipe[0] = -1;
 661 #endif
 662
 663         if (conf->auto_log_target)
 664             pa_log_set_target(PA_LOG_SYSLOG);
 665
 666 #ifdef HAVE_SETSID
 667         setsid();
 668 #endif
 669 #ifdef HAVE_SETPGID
 670         setpgid(0,0);
 671 #endif
 672
 673 #ifndef OS_IS_WIN32
 674         pa_close(0);
 675         pa_close(1);
 676         pa_close(2);
 677
 678         pa_assert_se(open("/dev/null", O_RDONLY) == 0);
 679         pa_assert_se(open("/dev/null", O_WRONLY) == 1);
 680         pa_assert_se(open("/dev/null", O_WRONLY) == 2);
 681 #else
 682         FreeConsole();
 683 #endif
 684
 685 #ifdef SIGTTOU
 686         signal(SIGTTOU, SIG_IGN);
 687 #endif
 688 #ifdef SIGTTIN
 689         signal(SIGTTIN, SIG_IGN);
 690 #endif
 691 #ifdef SIGTSTP
 692         signal(SIGTSTP, SIG_IGN);
 693 #endif
 694
 695 #ifdef TIOCNOTTY
 696         if ((tty_fd = open("/dev/tty", O_RDWR)) >= 0) {
 697             ioctl(tty_fd, TIOCNOTTY, (char*) 0);
 698             pa_assert_se(pa_close(tty_fd) == 0);
 699         }
 700 #endif
 701     }
 702
 703     pa_set_env("PULSE_INTERNAL", "1");
 704     pa_assert_se(chdir("/") == 0);
 705     umask(0022);
 706
 707 #ifdef HAVE_SYS_RESOURCE_H
 708     set_all_rlimits(conf);
 709 #endif
 710     pa_rtclock_hrtimer_enable();
 711
 712     pa_raise_priority(conf->nice_level);
 713
 714     if (conf->system_instance)
 715         if (change_user() < 0)
 716             goto finish;
 717
 718     pa_set_env("PULSE_SYSTEM", conf->system_instance ? "1" : "0");
 719
 720     pa_log_info(_("This is PulseAudio %s"), PACKAGE_VERSION);
 721     pa_log_debug(_("Compilation host: %s"), CANONICAL_HOST);
 722     pa_log_debug(_("Compilation CFLAGS: %s"), PA_CFLAGS);
 723
 724     s = pa_uname_string();
 725     pa_log_debug(_("Running on host: %s"), s);
 726     pa_xfree(s);
 727
 728     pa_log_debug(_("Found %u CPUs."), pa_ncpus());
 729
 730     pa_log_info(_("Page size is %lu bytes"), (unsigned long) PA_PAGE_SIZE);
 731
 732 #ifdef HAVE_VALGRIND_MEMCHECK_H
 733     pa_log_debug(_("Compiled with Valgrind support: yes"));
 734 #else
 735     pa_log_debug(_("Compiled with Valgrind support: no"));
 736 #endif
 737
 738     pa_log_debug(_("Running in valgrind mode: %s"), pa_yes_no(pa_in_valgrind()));
 739
 740 #ifdef __OPTIMIZE__
 741     pa_log_debug(_("Optimized build: yes"));
 742 #else
 743     pa_log_debug(_("Optimized build: no"));
 744 #endif
 745
 746 #ifdef NDEBUG
 747     pa_log_debug(_("NDEBUG defined, all asserts disabled."));
 748 #elif defined(FASTPATH)
 749     pa_log_debug(_("FASTPATH defined, only fast path asserts disabled."));
 750 #else
 751     pa_log_debug(_("All asserts enabled."));
 752 #endif
 753
 754     if (!(s = pa_machine_id())) {
 755         pa_log(_("Failed to get machine ID"));
 756         goto finish;
 757     }
 758     pa_log_info(_("Machine ID is %s."), s);
 759     pa_xfree(s);
 760
 761     if ((s = pa_session_id())) {
 762         pa_log_info(_("Session ID is %s."), s);
 763         pa_xfree(s);
 764     }
 765
 766     if (!(s = pa_get_runtime_dir()))
 767         goto finish;
 768     pa_log_info(_("Using runtime directory %s."), s);
 769     pa_xfree(s);
 770
 771     if (!(s = pa_get_state_dir()))
 772         goto finish;
 773     pa_log_info(_("Using state directory %s."), s);
 774     pa_xfree(s);
 775
 776     pa_log_info(_("Running in system mode: %s"), pa_yes_no(pa_in_system_mode()));
 777
 778     if (pa_in_system_mode())
 779         pa_log_warn(_("OK, so you are running PA in system mode. Please note that you most likely shouldn't be doing that.\n"
 780                       "If you do it nonetheless then it's your own fault if things don't work as expected.\n"
 781                       "Please read http://pulseaudio.org/wiki/WhatIsWrongWithSystemMode for an explanation why system mode is usually a bad idea."));
 782
 783     if (conf->use_pid_file) {
 784         int z;
 785
 786         if ((z = pa_pid_file_create("pulseaudio")) != 0) {
 787
 788             if (conf->cmd == PA_CMD_START && z > 0) {
 789                 /* If we are already running and with are run in
 790                  * --start mode, then let's return this as success. */
 791
 792                 retval = 0;
 793                 goto finish;
 794             }
 795
 796             pa_log(_("pa_pid_file_create() failed."));
 797             goto finish;
 798         }
 799
 800         valid_pid_file = TRUE;
 801     }
 802
 803     pa_disable_sigpipe();
 804
 805     if (pa_rtclock_hrtimer())
 806         pa_log_info(_("Fresh high-resolution timers available! Bon appetit!"));
 807     else
 808         pa_log_info(_("Dude, your kernel stinks! The chef's recommendation today is Linux with high-resolution timers enabled!"));
 809
 810     if (conf->lock_memory) {
 811 #ifdef HAVE_SYS_MMAN_H
 812         if (mlockall(MCL_FUTURE) < 0)
 813             pa_log_warn("mlockall() failed: %s", pa_cstrerror(errno));
 814         else
 815             pa_log_info("Sucessfully locked process into memory.");
 816 #else
 817         pa_log_warn("Memory locking requested but not supported on platform.");
 818 #endif
 819     }
 820
 821     pa_memtrap_install();
 822
 823     pa_assert_se(mainloop = pa_mainloop_new());
 824
 825     if (!(c = pa_core_new(pa_mainloop_get_api(mainloop), !conf->disable_shm, conf->shm_size))) {
 826         pa_log(_("pa_core_new() failed."));
 827         goto finish;
 828     }
 829
 830     c->default_sample_spec = conf->default_sample_spec;
 831     c->default_channel_map = conf->default_channel_map;
 832     c->default_n_fragments = conf->default_n_fragments;
 833     c->default_fragment_size_msec = conf->default_fragment_size_msec;
 834     c->exit_idle_time = conf->exit_idle_time;
 835     c->scache_idle_time = conf->scache_idle_time;
 836     c->resample_method = conf->resample_method;
 837     c->realtime_priority = conf->realtime_priority;
 838     c->realtime_scheduling = !!conf->realtime_scheduling;
 839     c->disable_remixing = !!conf->disable_remixing;
 840     c->disable_lfe_remixing = !!conf->disable_lfe_remixing;
 841     c->running_as_daemon = !!conf->daemonize;
 842     c->disallow_exit = conf->disallow_exit;
 843     c->flat_volumes = conf->flat_volumes;
 844
 845     pa_assert_se(pa_signal_init(pa_mainloop_get_api(mainloop)) == 0);
 846     pa_signal_new(SIGINT, signal_callback, c);
 847     pa_signal_new(SIGTERM, signal_callback, c);
 848 #ifdef SIGUSR1
 849     pa_signal_new(SIGUSR1, signal_callback, c);
 850 #endif
 851 #ifdef SIGUSR2
 852     pa_signal_new(SIGUSR2, signal_callback, c);
 853 #endif
 854 #ifdef SIGHUP
 855     pa_signal_new(SIGHUP, signal_callback, c);
 856 #endif
 857
 858 #ifdef OS_IS_WIN32
 859     win32_timer = pa_mainloop_get_api(mainloop)->rtclock_time_new(pa_mainloop_get_api(mainloop), pa_gettimeofday(&win32_tv), message_cb, NULL);
 860 #endif
 861
 862     oil_init();
 863
 864     if (!conf->no_cpu_limit)
 865         pa_assert_se(pa_cpu_limit_init(pa_mainloop_get_api(mainloop)) == 0);
 866
 867     buf = pa_strbuf_new();
 868     if (conf->load_default_script_file) {
 869         FILE *f;
 870
 871         if ((f = pa_daemon_conf_open_default_script_file(conf))) {
 872             r = pa_cli_command_execute_file_stream(c, f, buf, &conf->fail);
 873             fclose(f);
 874         }
 875     }
 876
 877     if (r >= 0)
 878         r = pa_cli_command_execute(c, conf->script_commands, buf, &conf->fail);
 879
 880     pa_log_error("%s", s = pa_strbuf_tostring_free(buf));
 881     pa_xfree(s);
 882
 883     /* We completed the initial module loading, so let's disable it
 884      * from now on, if requested */
 885     c->disallow_module_loading = !!conf->disallow_module_loading;
 886
 887     if (r < 0 && conf->fail) {
 888         pa_log(_("Failed to initialize daemon."));
 889         goto finish;
 890     }
 891
 892     if (!c->modules || pa_idxset_size(c->modules) == 0) {
 893         pa_log(_("Daemon startup without any loaded modules, refusing to work."));
 894         goto finish;
 895     }
 896
 897 #ifdef HAVE_FORK
 898     if (daemon_pipe[1] >= 0) {
 899         int ok = 0;
 900         pa_loop_write(daemon_pipe[1], &ok, sizeof(ok), NULL);
 901         pa_close(daemon_pipe[1]);
 902         daemon_pipe[1] = -1;
 903     }
 904 #endif
 905
 906 #ifdef HAVE_DBUS
 907     dbus = register_dbus(c);
 908 #endif
 909
 910     pa_log_info(_("Daemon startup complete."));
 911
 912     retval = 0;
 913     if (pa_mainloop_run(mainloop, &retval) < 0)
 914         goto finish;
 915
 916     pa_log_info(_("Daemon shutdown initiated."));
 917
 918 finish:
 919 #ifdef HAVE_DBUS
 920     if (dbus)
 921         pa_dbus_connection_unref(dbus);
 922 #endif
 923
 924     if (autospawn_fd >= 0) {
 925         if (autospawn_locked)
 926             pa_autospawn_lock_release();
 927
 928         pa_autospawn_lock_done(FALSE);
 929     }
 930
 931 #ifdef OS_IS_WIN32
 932     if (win32_timer)
 933         pa_mainloop_get_api(mainloop)->time_free(win32_timer);
 934 #endif
 935
 936     if (c) {
 937         pa_core_unref(c);
 938         pa_log_info(_("Daemon terminated."));
 939     }
 940
 941     if (!conf->no_cpu_limit)
 942         pa_cpu_limit_done();
 943
 944     pa_signal_done();
 945
 946 #ifdef HAVE_FORK
 947     if (daemon_pipe[1] >= 0)
 948         pa_loop_write(daemon_pipe[1], &retval, sizeof(retval), NULL);
 949
 950     pa_close_pipe(daemon_pipe);
 951 #endif
 952
 953     if (mainloop)
 954         pa_mainloop_free(mainloop);
 955
 956     if (conf)
 957         pa_daemon_conf_free(conf);
 958
 959     if (valid_pid_file)
 960         pa_pid_file_remove();
 961
 962 #ifdef OS_IS_WIN32
 963     WSACleanup();
 964 #endif
 965
 966     if (ltdl_init)
 967         pa_ltdl_done();
 968
 969 #ifdef HAVE_DBUS
 970     dbus_shutdown();
 971 #endif
 972
 973     return retval;
 974 }