diff options
Diffstat (limited to 'src/daemon/main.c')
| -rw-r--r-- | src/daemon/main.c | 936 |
1 files changed, 936 insertions, 0 deletions
diff --git a/src/daemon/main.c b/src/daemon/main.c new file mode 100644 index 00000000..14594416 --- /dev/null +++ b/src/daemon/main.c @@ -0,0 +1,936 @@ +/*** + This file is part of PulseAudio. + + Copyright 2004-2006 Lennart Poettering + Copyright 2006 Pierre Ossman <ossman@cendio.se> for Cendio AB + + PulseAudio is free software; you can redistribute it and/or modify + it under the terms of the GNU Lesser General Public License as published + by the Free Software Foundation; either version 2 of the License, + or (at your option) any later version. + + PulseAudio is distributed in the hope that it will be useful, but + WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + General Public License for more details. + + You should have received a copy of the GNU Lesser General Public License + along with PulseAudio; if not, write to the Free Software + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 + USA. +***/ + +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif + +#include <unistd.h> +#include <errno.h> +#include <string.h> +#include <stdlib.h> +#include <stdio.h> +#include <signal.h> +#include <stddef.h> +#include <ltdl.h> +#include <limits.h> +#include <fcntl.h> +#include <unistd.h> +#include <locale.h> +#include <sys/types.h> + +#include <liboil/liboil.h> + +#ifdef HAVE_SYS_IOCTL_H +#include <sys/ioctl.h> +#endif + +#ifdef HAVE_PWD_H +#include <pwd.h> +#endif +#ifdef HAVE_GRP_H +#include <grp.h> +#endif + +#ifdef HAVE_LIBWRAP +#include <syslog.h> +#include <tcpd.h> +#endif + +#ifdef HAVE_DBUS +#include <dbus/dbus.h> +#endif + +#include <pulse/mainloop.h> +#include <pulse/mainloop-signal.h> +#include <pulse/timeval.h> +#include <pulse/xmalloc.h> + +#include <pulsecore/winsock.h> +#include <pulsecore/core-error.h> +#include <pulsecore/core.h> +#include <pulsecore/memblock.h> +#include <pulsecore/module.h> +#include <pulsecore/cli-command.h> +#include <pulsecore/log.h> +#include <pulsecore/core-util.h> +#include <pulsecore/sioman.h> +#include <pulsecore/cli-text.h> +#include <pulsecore/pid.h> +#include <pulsecore/namereg.h> +#include <pulsecore/random.h> +#include <pulsecore/rtsig.h> +#include <pulsecore/rtclock.h> +#include <pulsecore/macro.h> +#include <pulsecore/mutex.h> +#include <pulsecore/thread.h> +#include <pulsecore/once.h> +#include <pulsecore/shm.h> + +#include "cmdline.h" +#include "cpulimit.h" +#include "daemon-conf.h" +#include "dumpmodules.h" +#include "caps.h" +#include "ltdl-bind-now.h" +#include "polkit.h" + +#define AUTOSPAWN_LOCK "autospawn.lock" + +#ifdef HAVE_LIBWRAP +/* Only one instance of these variables */ +int allow_severity = LOG_INFO; +int deny_severity = LOG_WARNING; +#endif + +#ifdef HAVE_OSS +/* padsp looks for this symbol in the running process and disables + * itself if it finds it and it is set to 7 (which is actually a bit + * mask). For details see padsp. */ +int __padsp_disabled__ = 7; +#endif + +#ifdef OS_IS_WIN32 + +static void message_cb(pa_mainloop_api*a, pa_time_event*e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) { + MSG msg; + struct timeval tvnext; + + while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) { + if (msg.message == WM_QUIT) + raise(SIGTERM); + else { + TranslateMessage(&msg); + DispatchMessage(&msg); + } + } + + pa_timeval_add(pa_gettimeofday(&tvnext), 100000); + a->time_restart(e, &tvnext); +} + +#endif + +static void signal_callback(pa_mainloop_api*m, PA_GCC_UNUSED pa_signal_event *e, int sig, void *userdata) { + pa_log_info("Got signal %s.", pa_sig2str(sig)); + + switch (sig) { +#ifdef SIGUSR1 + case SIGUSR1: + pa_module_load(userdata, "module-cli", NULL); + break; +#endif + +#ifdef SIGUSR2 + case SIGUSR2: + pa_module_load(userdata, "module-cli-protocol-unix", NULL); + break; +#endif + +#ifdef SIGHUP + case SIGHUP: { + char *c = pa_full_status_string(userdata); + pa_log_notice("%s", c); + pa_xfree(c); + return; + } +#endif + + case SIGINT: + case SIGTERM: + default: + pa_log_info("Exiting."); + m->quit(m, 1); + break; + } +} + +#if defined(HAVE_PWD_H) && defined(HAVE_GRP_H) + +static int change_user(void) { + struct passwd *pw; + struct group * gr; + int r; + + /* This function is called only in system-wide mode. It creates a + * runtime dir in /var/run/ with proper UID/GID and drops privs + * afterwards. */ + + if (!(pw = getpwnam(PA_SYSTEM_USER))) { + pa_log("Failed to find user '%s'.", PA_SYSTEM_USER); + return -1; + } + + if (!(gr = getgrnam(PA_SYSTEM_GROUP))) { + pa_log("Failed to find group '%s'.", PA_SYSTEM_GROUP); + return -1; + } + + pa_log_info("Found user '%s' (UID %lu) and group '%s' (GID %lu).", + PA_SYSTEM_USER, (unsigned long) pw->pw_uid, + PA_SYSTEM_GROUP, (unsigned long) gr->gr_gid); + + if (pw->pw_gid != gr->gr_gid) { + pa_log("GID of user '%s' and of group '%s' don't match.", PA_SYSTEM_USER, PA_SYSTEM_GROUP); + return -1; + } + + if (strcmp(pw->pw_dir, PA_SYSTEM_RUNTIME_PATH) != 0) + pa_log_warn("Warning: home directory of user '%s' is not '%s', ignoring.", PA_SYSTEM_USER, PA_SYSTEM_RUNTIME_PATH); + + if (pa_make_secure_dir(PA_SYSTEM_RUNTIME_PATH, 0755, pw->pw_uid, gr->gr_gid) < 0) { + pa_log("Failed to create '%s': %s", PA_SYSTEM_RUNTIME_PATH, pa_cstrerror(errno)); + return -1; + } + + if (pa_make_secure_dir(PA_SYSTEM_STATE_PATH, 0700, pw->pw_uid, gr->gr_gid) < 0) { + pa_log("Failed to create '%s': %s", PA_SYSTEM_STATE_PATH, pa_cstrerror(errno)); + return -1; + } + + /* We don't create the config dir here, because we don't need to write to it */ + + if (initgroups(PA_SYSTEM_USER, gr->gr_gid) != 0) { + pa_log("Failed to change group list: %s", pa_cstrerror(errno)); + return -1; + } + +#if defined(HAVE_SETRESGID) + r = setresgid(gr->gr_gid, gr->gr_gid, gr->gr_gid); +#elif defined(HAVE_SETEGID) + if ((r = setgid(gr->gr_gid)) >= 0) + r = setegid(gr->gr_gid); +#elif defined(HAVE_SETREGID) + r = setregid(gr->gr_gid, gr->gr_gid); +#else +#error "No API to drop priviliges" +#endif + + if (r < 0) { + pa_log("Failed to change GID: %s", pa_cstrerror(errno)); + return -1; + } + +#if defined(HAVE_SETRESUID) + r = setresuid(pw->pw_uid, pw->pw_uid, pw->pw_uid); +#elif defined(HAVE_SETEUID) + if ((r = setuid(pw->pw_uid)) >= 0) + r = seteuid(pw->pw_uid); +#elif defined(HAVE_SETREUID) + r = setreuid(pw->pw_uid, pw->pw_uid); +#else +#error "No API to drop priviliges" +#endif + + if (r < 0) { + pa_log("Failed to change UID: %s", pa_cstrerror(errno)); + return -1; + } + + pa_set_env("USER", PA_SYSTEM_USER); + pa_set_env("USERNAME", PA_SYSTEM_USER); + pa_set_env("LOGNAME", PA_SYSTEM_USER); + pa_set_env("HOME", PA_SYSTEM_RUNTIME_PATH); + + /* Relevant for pa_runtime_path() */ + pa_set_env("PULSE_RUNTIME_PATH", PA_SYSTEM_RUNTIME_PATH); + pa_set_env("PULSE_CONFIG_PATH", PA_SYSTEM_CONFIG_PATH); + pa_set_env("PULSE_STATE_PATH", PA_SYSTEM_STATE_PATH); + + pa_log_info("Successfully dropped root privileges."); + + return 0; +} + +#else /* HAVE_PWD_H && HAVE_GRP_H */ + +static int change_user(void) { + pa_log("System wide mode unsupported on this platform."); + return -1; +} + +#endif /* HAVE_PWD_H && HAVE_GRP_H */ + +#ifdef HAVE_SYS_RESOURCE_H + +static int set_one_rlimit(const pa_rlimit *r, int resource, const char *name) { + struct rlimit rl; + pa_assert(r); + + if (!r->is_set) + return 0; + + rl.rlim_cur = rl.rlim_max = r->value; + + if (setrlimit(resource, &rl) < 0) { + pa_log_info("setrlimit(%s, (%u, %u)) failed: %s", name, (unsigned) r->value, (unsigned) r->value, pa_cstrerror(errno)); + return -1; + } + + return 0; +} + +static void set_all_rlimits(const pa_daemon_conf *conf) { + set_one_rlimit(&conf->rlimit_fsize, RLIMIT_FSIZE, "RLIMIT_FSIZE"); + set_one_rlimit(&conf->rlimit_data, RLIMIT_DATA, "RLIMIT_DATA"); + set_one_rlimit(&conf->rlimit_stack, RLIMIT_STACK, "RLIMIT_STACK"); + set_one_rlimit(&conf->rlimit_core, RLIMIT_CORE, "RLIMIT_CORE"); + set_one_rlimit(&conf->rlimit_rss, RLIMIT_RSS, "RLIMIT_RSS"); +#ifdef RLIMIT_NPROC + set_one_rlimit(&conf->rlimit_nproc, RLIMIT_NPROC, "RLIMIT_NPROC"); +#endif + set_one_rlimit(&conf->rlimit_nofile, RLIMIT_NOFILE, "RLIMIT_NOFILE"); +#ifdef RLIMIT_MEMLOCK + set_one_rlimit(&conf->rlimit_memlock, RLIMIT_MEMLOCK, "RLIMIT_MEMLOCK"); +#endif + set_one_rlimit(&conf->rlimit_as, RLIMIT_AS, "RLIMIT_AS"); +#ifdef RLIMIT_LOCKS + set_one_rlimit(&conf->rlimit_locks, RLIMIT_LOCKS, "RLIMIT_LOCKS"); +#endif +#ifdef RLIMIT_SIGPENDING + set_one_rlimit(&conf->rlimit_sigpending, RLIMIT_SIGPENDING, "RLIMIT_SIGPENDING"); +#endif +#ifdef RLIMIT_MSGQUEUE + set_one_rlimit(&conf->rlimit_msgqueue, RLIMIT_MSGQUEUE, "RLIMIT_MSGQUEUE"); +#endif +#ifdef RLIMIT_NICE + set_one_rlimit(&conf->rlimit_nice, RLIMIT_NICE, "RLIMIT_NICE"); +#endif +#ifdef RLIMIT_RTPRIO + set_one_rlimit(&conf->rlimit_rtprio, RLIMIT_RTPRIO, "RLIMIT_RTPRIO"); +#endif +#ifdef RLIMIT_RTTIME + set_one_rlimit(&conf->rlimit_rttime, RLIMIT_RTTIME, "RLIMIT_RTTIME"); +#endif +} +#endif + +int main(int argc, char *argv[]) { + pa_core *c = NULL; + pa_strbuf *buf = NULL; + pa_daemon_conf *conf = NULL; + pa_mainloop *mainloop = NULL; + char *s; + int r = 0, retval = 1, d = 0; + pa_bool_t suid_root, real_root; + pa_bool_t valid_pid_file = FALSE; + gid_t gid = (gid_t) -1; + pa_bool_t ltdl_init = FALSE; + int passed_fd = -1; + const char *e; +#ifdef HAVE_FORK + int daemon_pipe[2] = { -1, -1 }; +#endif +#ifdef OS_IS_WIN32 + pa_time_event *win32_timer; + struct timeval win32_tv; +#endif + char *lf = NULL; + int autospawn_lock_fd = -1; + +#if defined(__linux__) && defined(__OPTIMIZE__) + /* + Disable lazy relocations to make usage of external libraries + more deterministic for our RT threads. We abuse __OPTIMIZE__ as + a check whether we are a debug build or not. + */ + + if (!getenv("LD_BIND_NOW")) { + char *rp; + + /* We have to execute ourselves, because the libc caches the + * value of $LD_BIND_NOW on initialization. */ + + pa_set_env("LD_BIND_NOW", "1"); + pa_assert_se(rp = pa_readlink("/proc/self/exe")); + pa_assert_se(execv(rp, argv) == 0); + } +#endif + +#ifdef HAVE_GETUID + real_root = getuid() == 0; + suid_root = !real_root && geteuid() == 0; +#else + real_root = FALSE; + suid_root = FALSE; +#endif + + if (!real_root) { + /* Drop all capabilities except CAP_SYS_NICE */ + pa_limit_caps(); + + /* Drop priviliges, but keep CAP_SYS_NICE */ + pa_drop_root(); + + /* After dropping root, the effective set is reset, hence, + * let's raise it again */ + pa_limit_caps(); + + /* When capabilities are not supported we will not be able to + * aquire RT sched anymore. But yes, that's the way it is. It + * is just too risky tun let PA run as root all the time. */ + } + + if ((e = getenv("PULSE_PASSED_FD"))) { + passed_fd = atoi(e); + + if (passed_fd <= 2) + passed_fd = -1; + } + + pa_close_all(passed_fd, -1); + + pa_reset_sigs(-1); + pa_unblock_sigs(-1); + + /* At this point, we are a normal user, possibly with CAP_NICE if + * we were started SUID. If we are started as normal root, than we + * still are normal root. */ + + setlocale(LC_ALL, ""); + pa_log_set_maximal_level(PA_LOG_INFO); + pa_log_set_ident("pulseaudio"); + + conf = pa_daemon_conf_new(); + + if (pa_daemon_conf_load(conf, NULL) < 0) + goto finish; + + if (pa_daemon_conf_env(conf) < 0) + goto finish; + + if (pa_cmdline_parse(conf, argc, argv, &d) < 0) { + pa_log("Failed to parse command line."); + goto finish; + } + + pa_log_set_maximal_level(conf->log_level); + pa_log_set_target(conf->auto_log_target ? PA_LOG_STDERR : conf->log_target, NULL); + + pa_log_debug("Started as real root: %s, suid root: %s", pa_yes_no(real_root), pa_yes_no(suid_root)); + + if (!real_root && pa_have_caps()) { + pa_bool_t allow_high_priority = FALSE, allow_realtime = FALSE; + + /* Let's better not enable high prio or RT by default */ + + if (conf->high_priority && !allow_high_priority) { + if (pa_own_uid_in_group(PA_REALTIME_GROUP, &gid) > 0) { + pa_log_info("We're in the group '"PA_REALTIME_GROUP"', allowing high-priority scheduling."); + allow_high_priority = TRUE; + } + } + + if (conf->realtime_scheduling && !allow_realtime) { + if (pa_own_uid_in_group(PA_REALTIME_GROUP, &gid) > 0) { + pa_log_info("We're in the group '"PA_REALTIME_GROUP"', allowing real-time scheduling."); + allow_realtime = TRUE; + } + } + +#ifdef HAVE_POLKIT + if (conf->high_priority && !allow_high_priority) { + if (pa_polkit_check("org.pulseaudio.acquire-high-priority") > 0) { + pa_log_info("PolicyKit grants us acquire-high-priority privilege."); + allow_high_priority = TRUE; + } else + pa_log_info("PolicyKit refuses acquire-high-priority privilege."); + } + + if (conf->realtime_scheduling && !allow_realtime) { + if (pa_polkit_check("org.pulseaudio.acquire-real-time") > 0) { + pa_log_info("PolicyKit grants us acquire-real-time privilege."); + allow_realtime = TRUE; + } else + pa_log_info("PolicyKit refuses acquire-real-time privilege."); + } +#endif + + if (!allow_high_priority && !allow_realtime) { + + /* OK, there's no further need to keep CAP_NICE. Hence + * let's give it up early */ + + pa_drop_caps(); + + if (conf->high_priority || conf->realtime_scheduling) + pa_log_notice("Called SUID root and real-time/high-priority scheduling was requested in the configuration. However, we lack the necessary priviliges:\n" + "We are not in group '"PA_REALTIME_GROUP"' and PolicyKit refuse to grant us priviliges. Dropping SUID again.\n" + "For enabling real-time scheduling please acquire the appropriate PolicyKit priviliges, or become a member of '"PA_REALTIME_GROUP"', or increase the RLIMIT_NICE/RLIMIT_RTPRIO resource limits for this user."); + } + } + +#ifdef HAVE_SYS_RESOURCE_H + /* Reset resource limits. If we are run as root (for system mode) + * this might end up increasing the limits, which is intended + * behaviour. For all other cases, i.e. started as normal user, or + * SUID root at this point we should have no CAP_SYS_RESOURCE and + * increasing the limits thus should fail. Which is, too, intended + * behaviour */ + + set_all_rlimits(conf); +#endif + + if (conf->high_priority && !pa_can_high_priority()) + pa_log_warn("High-priority scheduling enabled in configuration but not allowed by policy."); + + if (conf->high_priority && (conf->cmd == PA_CMD_DAEMON || conf->cmd == PA_CMD_START)) + pa_raise_priority(conf->nice_level); + + if (pa_have_caps()) { + pa_bool_t drop; + + drop = (conf->cmd != PA_CMD_DAEMON && conf->cmd != PA_CMD_START) || !conf->realtime_scheduling; + +#ifdef RLIMIT_RTPRIO + if (!drop) { + struct rlimit rl; + /* At this point we still have CAP_NICE if we were loaded + * SUID root. If possible let's acquire RLIMIT_RTPRIO + * instead and give CAP_NICE up. */ + + if (getrlimit(RLIMIT_RTPRIO, &rl) >= 0) { + + if (rl.rlim_cur >= 9) + drop = TRUE; + else { + rl.rlim_max = rl.rlim_cur = 9; + + if (setrlimit(RLIMIT_RTPRIO, &rl) >= 0) { + pa_log_info("Successfully increased RLIMIT_RTPRIO"); + drop = TRUE; + } else + pa_log_warn("RLIMIT_RTPRIO failed: %s", pa_cstrerror(errno)); + } + } + } +#endif + + if (drop) { + pa_log_info("Giving up CAP_NICE"); + pa_drop_caps(); + suid_root = FALSE; + } + } + + if (conf->realtime_scheduling && !pa_can_realtime()) + pa_log_warn("Real-time scheduling enabled in configuration but not allowed by policy."); + + pa_log_debug("Can realtime: %s, can high-priority: %s", pa_yes_no(pa_can_realtime()), pa_yes_no(pa_can_high_priority())); + + LTDL_SET_PRELOADED_SYMBOLS(); + pa_ltdl_init(); + ltdl_init = TRUE; + + if (conf->dl_search_path) + lt_dlsetsearchpath(conf->dl_search_path); + +#ifdef OS_IS_WIN32 + { + WSADATA data; + WSAStartup(MAKEWORD(2, 0), &data); + } +#endif + + pa_random_seed(); + + switch (conf->cmd) { + case PA_CMD_DUMP_MODULES: + pa_dump_modules(conf, argc-d, argv+d); + retval = 0; + goto finish; + + case PA_CMD_DUMP_CONF: { + s = pa_daemon_conf_dump(conf); + fputs(s, stdout); + pa_xfree(s); + retval = 0; + goto finish; + } + + case PA_CMD_DUMP_RESAMPLE_METHODS: { + int i; + + for (i = 0; i < PA_RESAMPLER_MAX; i++) + if (pa_resample_method_supported(i)) + printf("%s\n", pa_resample_method_to_string(i)); + + goto finish; + } + + case PA_CMD_HELP : + pa_cmdline_help(argv[0]); + retval = 0; + goto finish; + + case PA_CMD_VERSION : + printf(PACKAGE_NAME" "PACKAGE_VERSION"\n"); + retval = 0; + goto finish; + + case PA_CMD_CHECK: { + pid_t pid; + + if (pa_pid_file_check_running(&pid, "pulseaudio") < 0) + pa_log_info("Daemon not running"); + else { + pa_log_info("Daemon running as PID %u", pid); + retval = 0; + } + + goto finish; + + } + case PA_CMD_KILL: + + if (pa_pid_file_kill(SIGINT, NULL, "pulseaudio") < 0) + pa_log("Failed to kill daemon."); + else + retval = 0; + + goto finish; + + case PA_CMD_CLEANUP_SHM: + + if (pa_shm_cleanup() >= 0) + retval = 0; + + goto finish; + + default: + pa_assert(conf->cmd == PA_CMD_DAEMON || conf->cmd == PA_CMD_START); + } + + if (real_root && !conf->system_instance) + pa_log_warn("This program is not intended to be run as root (unless --system is specified)."); + else if (!real_root && conf->system_instance) { + pa_log("Root priviliges required."); + goto finish; + } + + if (conf->cmd == PA_CMD_START) { + /* If we shall start PA only when it is not running yet, we + * first take the autospawn lock to make things + * synchronous. */ + + lf = pa_runtime_path(AUTOSPAWN_LOCK); + autospawn_lock_fd = pa_lock_lockfile(lf); + } + + if (conf->daemonize) { + pid_t child; + int tty_fd; + + if (pa_stdio_acquire() < 0) { + pa_log("Failed to acquire stdio."); + goto finish; + } + +#ifdef HAVE_FORK + if (pipe(daemon_pipe) < 0) { + pa_log("pipe failed: %s", pa_cstrerror(errno)); + goto finish; + } + + if ((child = fork()) < 0) { + pa_log("fork() failed: %s", pa_cstrerror(errno)); + goto finish; + } + + if (child != 0) { + ssize_t n; + /* Father */ + + pa_assert_se(pa_close(daemon_pipe[1]) == 0); + daemon_pipe[1] = -1; + + if ((n = pa_loop_read(daemon_pipe[0], &retval, sizeof(retval), NULL)) != sizeof(retval)) { + + if (n < 0) + pa_log("read() failed: %s", pa_cstrerror(errno)); + + retval = 1; + } + + if (retval) + pa_log("Daemon startup failed."); + else + pa_log_info("Daemon startup successful."); + + goto finish; + } + + if (autospawn_lock_fd >= 0) { + /* The lock file is unlocked from the parent, so we need + * to close it in the child */ + + pa_close(autospawn_lock_fd); + autospawn_lock_fd = -1; + } + + pa_assert_se(pa_close(daemon_pipe[0]) == 0); + daemon_pipe[0] = -1; +#endif + + if (conf->auto_log_target) + pa_log_set_target(PA_LOG_SYSLOG, NULL); + +#ifdef HAVE_SETSID + setsid(); +#endif +#ifdef HAVE_SETPGID + setpgid(0,0); +#endif + +#ifndef OS_IS_WIN32 + pa_close(0); + pa_close(1); + pa_close(2); + + pa_assert_se(open("/dev/null", O_RDONLY) == 0); + pa_assert_se(open("/dev/null", O_WRONLY) == 1); + pa_assert_se(open("/dev/null", O_WRONLY) == 2); +#else + FreeConsole(); +#endif + +#ifdef SIGTTOU + signal(SIGTTOU, SIG_IGN); +#endif +#ifdef SIGTTIN + signal(SIGTTIN, SIG_IGN); +#endif +#ifdef SIGTSTP + signal(SIGTSTP, SIG_IGN); +#endif + +#ifdef TIOCNOTTY + if ((tty_fd = open("/dev/tty", O_RDWR)) >= 0) { + ioctl(tty_fd, TIOCNOTTY, (char*) 0); + pa_assert_se(pa_close(tty_fd) == 0); + } +#endif + } + + pa_set_env("PULSE_INTERNAL", "1"); + pa_assert_se(chdir("/") == 0); + umask(0022); + + if (conf->system_instance) + if (change_user() < 0) + goto finish; + + pa_set_env("PULSE_SYSTEM", conf->system_instance ? "1" : "0"); + + pa_log_info("This is PulseAudio " PACKAGE_VERSION); + pa_log_info("Page size is %lu bytes", (unsigned long) PA_PAGE_SIZE); + if (!(s = pa_get_runtime_dir())) + goto finish; + pa_log_info("Using runtime directory %s.", s); + pa_xfree(s); + if (!(s = pa_get_state_dir())) + pa_log_info("Using state directory %s.", s); + pa_xfree(s); + + pa_log_info("Running in system mode: %s", pa_yes_no(pa_in_system_mode())); + + if (conf->use_pid_file) { + int z; + + if ((z = pa_pid_file_create("pulseaudio")) != 0) { + + if (conf->cmd == PA_CMD_START && z > 0) { + /* If we are already running and with are run in + * --start mode, then let's return this as success. */ + + pa_log_info("z=%i rock!", z); + + retval = 0; + goto finish; + } + + pa_log("pa_pid_file_create() failed."); + goto finish; + } + + valid_pid_file = TRUE; + } + +#ifdef SIGPIPE + signal(SIGPIPE, SIG_IGN); +#endif + + if (pa_rtclock_hrtimer()) + pa_log_info("Fresh high-resolution timers available! Bon appetit!"); + else + pa_log_info("Dude, your kernel stinks! The chef's recommendation today is Linux with high-resolution timers enabled!"); + +#ifdef SIGRTMIN + /* Valgrind uses SIGRTMAX. To easy debugging we don't use it here */ + pa_rtsig_configure(SIGRTMIN, SIGRTMAX-1); +#endif + + pa_assert_se(mainloop = pa_mainloop_new()); + + if (!(c = pa_core_new(pa_mainloop_get_api(mainloop), !conf->disable_shm))) { + pa_log("pa_core_new() failed."); + goto finish; + } + + c->default_sample_spec = conf->default_sample_spec; + c->default_n_fragments = conf->default_n_fragments; + c->default_fragment_size_msec = conf->default_fragment_size_msec; + c->exit_idle_time = conf->exit_idle_time; + c->module_idle_time = conf->module_idle_time; + c->scache_idle_time = conf->scache_idle_time; + c->resample_method = conf->resample_method; + c->realtime_priority = conf->realtime_priority; + c->realtime_scheduling = !!conf->realtime_scheduling; + c->disable_remixing = !!conf->disable_remixing; + c->running_as_daemon = !!conf->daemonize; + + pa_assert_se(pa_signal_init(pa_mainloop_get_api(mainloop)) == 0); + pa_signal_new(SIGINT, signal_callback, c); + pa_signal_new(SIGTERM, signal_callback, c); +#ifdef SIGUSR1 + pa_signal_new(SIGUSR1, signal_callback, c); +#endif +#ifdef SIGUSR2 + pa_signal_new(SIGUSR2, signal_callback, c); +#endif +#ifdef SIGHUP + pa_signal_new(SIGHUP, signal_callback, c); +#endif + +#ifdef OS_IS_WIN32 + win32_timer = pa_mainloop_get_api(mainloop)->time_new(pa_mainloop_get_api(mainloop), pa_gettimeofday(&win32_tv), message_cb, NULL); +#endif + + oil_init(); + + if (!conf->no_cpu_limit) + pa_assert_se(pa_cpu_limit_init(pa_mainloop_get_api(mainloop)) == 0); + + buf = pa_strbuf_new(); + if (conf->load_default_script_file) { + FILE *f; + + if ((f = pa_daemon_conf_open_default_script_file(conf))) { + r = pa_cli_command_execute_file_stream(c, f, buf, &conf->fail); + fclose(f); + } + } + + if (r >= 0) + r = pa_cli_command_execute(c, conf->script_commands, buf, &conf->fail); + + pa_log_error("%s", s = pa_strbuf_tostring_free(buf)); + pa_xfree(s); + + /* We completed the initial module loading, so let's disable it + * from now on, if requested */ + c->disallow_module_loading = !!conf->disallow_module_loading; + + if (r < 0 && conf->fail) { + pa_log("Failed to initialize daemon."); + goto finish; + } + + if (!c->modules || pa_idxset_size(c->modules) == 0) { + pa_log("Daemon startup without any loaded modules, refusing to work."); + goto finish; + } + + if (c->default_sink_name && !pa_namereg_get(c, c->default_sink_name, PA_NAMEREG_SINK, TRUE) && conf->fail) { + pa_log_error("Default sink name (%s) does not exist in name register.", c->default_sink_name); + goto finish; + } + +#ifdef HAVE_FORK + if (daemon_pipe[1] >= 0) { + int ok = 0; + pa_loop_write(daemon_pipe[1], &ok, sizeof(ok), NULL); + pa_close(daemon_pipe[1]); + daemon_pipe[1] = -1; + } +#endif + + pa_log_info("Daemon startup complete."); + + retval = 0; + if (pa_mainloop_run(mainloop, &retval) < 0) + goto finish; + + pa_log_info("Daemon shutdown initiated."); + +finish: + + if (autospawn_lock_fd >= 0) + pa_unlock_lockfile(lf, autospawn_lock_fd); + + if (lf) + pa_xfree(lf); + +#ifdef OS_IS_WIN32 + if (win32_timer) + pa_mainloop_get_api(mainloop)->time_free(win32_timer); +#endif + + if (c) { + pa_core_unref(c); + pa_log_info("Daemon terminated."); + } + + if (!conf->no_cpu_limit) + pa_cpu_limit_done(); + + pa_signal_done(); + +#ifdef HAVE_FORK + if (daemon_pipe[1] >= 0) + pa_loop_write(daemon_pipe[1], &retval, sizeof(retval), NULL); + + pa_close_pipe(daemon_pipe); +#endif + + if (mainloop) + pa_mainloop_free(mainloop); + + if (conf) + pa_daemon_conf_free(conf); + + if (valid_pid_file) + pa_pid_file_remove(); + +#ifdef OS_IS_WIN32 + WSACleanup(); +#endif + + if (ltdl_init) + pa_ltdl_done(); + +#ifdef HAVE_DBUS + dbus_shutdown(); +#endif + + return retval; +} |