add new switch --disallow-exit

src/daemon/cmdline.c

@@ -50,6 +50,7 @@ enum {
     ARG_HIGH_PRIORITY,
     ARG_REALTIME,
     ARG_DISALLOW_MODULE_LOADING,
+    ARG_DISALLOW_EXIT,
     ARG_EXIT_IDLE_TIME,
     ARG_MODULE_IDLE_TIME,
     ARG_SCACHE_IDLE_TIME,
@@ -82,6 +83,7 @@ static const struct option long_options[] = {
     {"high-priority",               2, 0, ARG_HIGH_PRIORITY},
     {"realtime",                    2, 0, ARG_REALTIME},
     {"disallow-module-loading",     2, 0, ARG_DISALLOW_MODULE_LOADING},
+    {"disallow-exit",               2, 0, ARG_DISALLOW_EXIT},
     {"exit-idle-time",              2, 0, ARG_EXIT_IDLE_TIME},
     {"module-idle-time",            2, 0, ARG_MODULE_IDLE_TIME},
     {"scache-idle-time",            2, 0, ARG_SCACHE_IDLE_TIME},
@@ -134,7 +136,9 @@ void pa_cmdline_help(const char *argv0) {
            "      --realtime[=BOOL]                 Try to enable realtime scheduling\n"
            "                                        (only available as root, when SUID or\n"
            "                                        with elevated RLIMIT_RTPRIO)\n"
-           "      --disallow-module-loading[=BOOL]  Disallow module loading after startup\n"
+           "      --disallow-module-loading[=BOOL]  Disallow module user requested module\n"
+           "                                        loading/unloading after startup\n"
+           "      --disallow-exit[=BOOL]            Disallow user requested exit\n"
            "      --exit-idle-time=SECS             Terminate the daemon when idle and this\n"
            "                                        time passed\n"
            "      --module-idle-time=SECS           Unload autoloaded modules when idle and\n"
@@ -286,6 +290,13 @@ int pa_cmdline_parse(pa_daemon_conf *conf, int argc, char *const argv [], int *d
                 }
                 break;
 
+            case ARG_DISALLOW_EXIT:
+                if ((conf->disallow_exit = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
+                    pa_log(_("--disallow-exit boolean argument"));
+                    goto fail;
+                }
+                break;
+
             case ARG_USE_PID_FILE:
                 if ((conf->use_pid_file = optarg ? pa_parse_boolean(optarg) : TRUE) < 0) {
                     pa_log(_("--use-pid-file expects boolean argument"));

src/daemon/daemon-conf.c

@@ -63,6 +63,7 @@ static const pa_daemon_conf default_conf = {
     .realtime_scheduling = FALSE,
     .realtime_priority = 5,  /* Half of JACK's default rtprio */
     .disallow_module_loading = FALSE,
+    .disallow_exit = FALSE,
     .exit_idle_time = 20,
     .module_idle_time = 20,
     .scache_idle_time = 20,
@@ -403,6 +404,7 @@ int pa_daemon_conf_load(pa_daemon_conf *c, const char *filename) {
         { "high-priority",              pa_config_parse_bool,     NULL },
         { "realtime-scheduling",        pa_config_parse_bool,     NULL },
         { "disallow-module-loading",    pa_config_parse_bool,     NULL },
+        { "disallow-exit",              pa_config_parse_bool,     NULL },
         { "use-pid-file",               pa_config_parse_bool,     NULL },
         { "system-instance",            pa_config_parse_bool,     NULL },
         { "no-cpu-limit",               pa_config_parse_bool,     NULL },
@@ -466,17 +468,17 @@ int pa_daemon_conf_load(pa_daemon_conf *c, const char *filename) {
     table[2].data = &c->high_priority;
     table[3].data = &c->realtime_scheduling;
     table[4].data = &c->disallow_module_loading;
-    table[5].data = &c->use_pid_file;
+    table[5].data = &c->disallow_exit;
-    table[6].data = &c->system_instance;
+    table[6].data = &c->use_pid_file;
-    table[7].data = &c->no_cpu_limit;
+    table[7].data = &c->system_instance;
-    table[8].data = &c->disable_shm;
+    table[8].data = &c->no_cpu_limit;
-    table[9].data = &c->exit_idle_time;
+    table[9].data = &c->disable_shm;
-    table[10].data = &c->module_idle_time;
+    table[10].data = &c->exit_idle_time;
-    table[11].data = &c->scache_idle_time;
+    table[11].data = &c->module_idle_time;
-    table[12].data = c;
+    table[12].data = &c->scache_idle_time;
-    table[13].data = &c->dl_search_path;
+    table[13].data = c;
-    table[14].data = &c->default_script_file;
+    table[14].data = &c->dl_search_path;
-    table[15].data = c;
+    table[15].data = &c->default_script_file;
     table[16].data = c;
     table[17].data = c;
     table[18].data = c;
@@ -486,67 +488,68 @@ int pa_daemon_conf_load(pa_daemon_conf *c, const char *filename) {
     table[22].data = c;
     table[23].data = c;
     table[24].data = c;
-    table[25].data = &c->disable_remixing;
+    table[25].data = c;
-    table[26].data = &c->load_default_script_file;
+    table[26].data = &c->disable_remixing;
+    table[27].data = &c->load_default_script_file;
 #ifdef HAVE_SYS_RESOURCE_H
-    table[27].data = &c->rlimit_fsize;
+    table[28].data = &c->rlimit_fsize;
-    table[28].data = &c->rlimit_data;
+    table[29].data = &c->rlimit_data;
-    table[29].data = &c->rlimit_stack;
+    table[30].data = &c->rlimit_stack;
-    table[30].data = &c->rlimit_as;
+    table[31].data = &c->rlimit_as;
-    table[31].data = &c->rlimit_core;
+    table[32].data = &c->rlimit_core;
-    table[32].data = &c->rlimit_nofile;
+    table[33].data = &c->rlimit_nofile;
-    table[33].data = &c->rlimit_as;
+    table[34].data = &c->rlimit_as;
 #ifdef RLIMIT_NPROC
-    table[34].data = &c->rlimit_nproc;
+    table[35].data = &c->rlimit_nproc;
 #endif
 
 #ifdef RLIMIT_MEMLOCK
 #ifndef RLIMIT_NPROC
 #error "Houston, we have a numbering problem!"
 #endif
-    table[35].data = &c->rlimit_memlock;
+    table[36].data = &c->rlimit_memlock;
 #endif
 
 #ifdef RLIMIT_LOCKS
 #ifndef RLIMIT_MEMLOCK
 #error "Houston, we have a numbering problem!"
 #endif
-    table[36].data = &c->rlimit_locks;
+    table[37].data = &c->rlimit_locks;
 #endif
 
 #ifdef RLIMIT_SIGPENDING
 #ifndef RLIMIT_LOCKS
 #error "Houston, we have a numbering problem!"
 #endif
-    table[37].data = &c->rlimit_sigpending;
+    table[38].data = &c->rlimit_sigpending;
 #endif
 
 #ifdef RLIMIT_MSGQUEUE
 #ifndef RLIMIT_SIGPENDING
 #error "Houston, we have a numbering problem!"
 #endif
-    table[38].data = &c->rlimit_msgqueue;
+    table[39].data = &c->rlimit_msgqueue;
 #endif
 
 #ifdef RLIMIT_NICE
 #ifndef RLIMIT_MSGQUEUE
 #error "Houston, we have a numbering problem!"
 #endif
-    table[39].data = &c->rlimit_nice;
+    table[40].data = &c->rlimit_nice;
 #endif
 
 #ifdef RLIMIT_RTPRIO
 #ifndef RLIMIT_NICE
 #error "Houston, we have a numbering problem!"
 #endif
-    table[40].data = &c->rlimit_rtprio;
+    table[41].data = &c->rlimit_rtprio;
 #endif
 
 #ifdef RLIMIT_RTTIME
 #ifndef RLIMIT_RTTIME
 #error "Houston, we have a numbering problem!"
 #endif
-    table[41].data = &c->rlimit_rttime;
+    table[42].data = &c->rlimit_rttime;
 #endif
 #endif
 
@@ -643,6 +646,7 @@ char *pa_daemon_conf_dump(pa_daemon_conf *c) {
     pa_strbuf_printf(s, "realtime-scheduling = %s\n", pa_yes_no(c->realtime_scheduling));
     pa_strbuf_printf(s, "realtime-priority = %i\n", c->realtime_priority);
     pa_strbuf_printf(s, "disallow-module-loading = %s\n", pa_yes_no(c->disallow_module_loading));
+    pa_strbuf_printf(s, "disallow-exit = %s\n", pa_yes_no(c->disallow_exit));
     pa_strbuf_printf(s, "use-pid-file = %s\n", pa_yes_no(c->use_pid_file));
     pa_strbuf_printf(s, "system-instance = %s\n", pa_yes_no(c->system_instance));
     pa_strbuf_printf(s, "no-cpu-limit = %s\n", pa_yes_no(c->no_cpu_limit));

src/daemon/daemon-conf.h

@@ -66,7 +66,8 @@ typedef struct pa_daemon_conf {
         no_cpu_limit,
         disable_shm,
         disable_remixing,
-        load_default_script_file;
+        load_default_script_file,
+        disallow_exit;
     int exit_idle_time,
         module_idle_time,
         scache_idle_time,

src/daemon/main.c

@@ -813,6 +813,7 @@ int main(int argc, char *argv[]) {
     c->realtime_scheduling = !!conf->realtime_scheduling;
     c->disable_remixing = !!conf->disable_remixing;
     c->running_as_daemon = !!conf->daemonize;
+    c->disallow_exit = conf->disallow_exit;
 
     pa_assert_se(pa_signal_init(pa_mainloop_get_api(mainloop)) == 0);
     pa_signal_new(SIGINT, signal_callback, c);

src/modules/module-cli.c

@@ -62,7 +62,7 @@ static void eof_and_exit_cb(pa_cli*c, void *userdata) {
     pa_assert(c);
     pa_assert(m);
 
-    m->core->mainloop->quit(m->core->mainloop, 0);
+    pa_core_exit(m->core, FALSE, 0);
 }
 
 int pa__init(pa_module*m) {

src/pulsecore/cli-command.c

@@ -188,7 +188,9 @@ static int pa_cli_command_exit(pa_core *c, pa_tokenizer *t, pa_strbuf *buf, pa_b
     pa_assert(buf);
     pa_assert(fail);
 
-    c->mainloop->quit(c->mainloop, 0);
+    if (pa_core_exit(c, FALSE, 0) < 0)
+        pa_strbuf_puts(buf, "Not allowed to terminate daemon.\n");
+
     return 0;
 }
 

src/pulsecore/client.c

@@ -58,7 +58,7 @@ pa_client *pa_client_new(pa_core *core, const char *driver, const char *name) {
     pa_log_info("Created %u \"%s\"", c->index, pa_strnull(name));
     pa_subscription_post(core, PA_SUBSCRIPTION_EVENT_CLIENT|PA_SUBSCRIPTION_EVENT_NEW, c->index);
 
-    pa_core_check_quit(core);
+    pa_core_check_idle(core);
 
     return c;
 }
@@ -78,7 +78,7 @@ void pa_client_free(pa_client *c) {
     pa_xfree(c->driver);
     pa_xfree(c);
 
-    pa_core_check_quit(core);
+    pa_core_check_idle(core);
 }
 
 void pa_client_kill(pa_client *c) {

src/pulsecore/core.c

@@ -125,7 +125,7 @@ pa_core* pa_core_new(pa_mainloop_api *m, int shared) {
     c->mempool = pool;
     pa_silence_cache_init(&c->silence_cache);
 
-    c->quit_event = NULL;
+    c->exit_event = NULL;
 
     c->exit_idle_time = -1;
     c->module_idle_time = 20;
@@ -134,6 +134,7 @@ pa_core* pa_core_new(pa_mainloop_api *m, int shared) {
     c->resample_method = PA_RESAMPLER_SPEEX_FLOAT_BASE + 3;
 
     c->disallow_module_loading = FALSE;
+    c->disallow_exit = FALSE;
     c->realtime_scheduling = FALSE;
     c->realtime_priority = 5;
     c->disable_remixing = FALSE;
@@ -149,7 +150,7 @@ pa_core* pa_core_new(pa_mainloop_api *m, int shared) {
     pa_check_signal_is_blocked(SIGPIPE);
 #endif
 
-    pa_core_check_quit(c);
+    pa_core_check_idle(c);
 
     return c;
 }
@@ -182,8 +183,8 @@ static void core_free(pa_object *o) {
     pa_autoload_free(c);
     pa_subscription_free_all(c);
 
-    if (c->quit_event)
+    if (c->exit_event)
-        c->mainloop->time_free(c->quit_event);
+        c->mainloop->time_free(c->exit_event);
 
     pa_xfree(c->default_source_name);
     pa_xfree(c->default_sink_name);
@@ -199,17 +200,17 @@ static void core_free(pa_object *o) {
     pa_xfree(c);
 }
 
-static void quit_callback(pa_mainloop_api*m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
+static void exit_callback(pa_mainloop_api*m, pa_time_event *e, PA_GCC_UNUSED const struct timeval *tv, void *userdata) {
     pa_core *c = userdata;
-    pa_assert(c->quit_event == e);
+    pa_assert(c->exit_event == e);
 
-    m->quit(m, 0);
+    pa_core_exit(c, TRUE, 0);
 }
 
-void pa_core_check_quit(pa_core *c) {
+void pa_core_check_idle(pa_core *c) {
     pa_assert(c);
 
-    if (!c->quit_event &&
+    if (!c->exit_event &&
         c->exit_idle_time >= 0 &&
         pa_idxset_size(c->clients) == 0) {
 
@@ -217,10 +218,20 @@ void pa_core_check_quit(pa_core *c) {
         pa_gettimeofday(&tv);
         tv.tv_sec+= c->exit_idle_time;
 
-        c->quit_event = c->mainloop->time_new(c->mainloop, &tv, quit_callback, c);
+        c->exit_event = c->mainloop->time_new(c->mainloop, &tv, exit_callback, c);
 
-    } else if (c->quit_event && pa_idxset_size(c->clients) > 0) {
+    } else if (c->exit_event && pa_idxset_size(c->clients) > 0) {
-        c->mainloop->time_free(c->quit_event);
+        c->mainloop->time_free(c->exit_event);
-        c->quit_event = NULL;
+        c->exit_event = NULL;
     }
 }
+
+int pa_core_exit(pa_core *c, pa_bool_t force, int retval) {
+    pa_assert(c);
+
+    if (c->disallow_exit && !force)
+        return -1;
+
+    c->mainloop->quit(c->mainloop, retval);
+    return 0;
+}

src/pulsecore/core.h

@@ -115,11 +115,12 @@ struct pa_core {
 
     int exit_idle_time, module_idle_time, scache_idle_time;
 
-    pa_time_event *quit_event;
+    pa_time_event *exit_event;
 
     pa_time_event *scache_auto_unload_event;
 
     pa_bool_t disallow_module_loading:1;
+    pa_bool_t disallow_exit:1;
     pa_bool_t running_as_daemon:1;
     pa_bool_t realtime_scheduling:1;
     pa_bool_t disable_remixing:1;
@@ -142,6 +143,8 @@ enum {
 pa_core* pa_core_new(pa_mainloop_api *m, int shared);
 
 /* Check whether noone is connected to this core */
-void pa_core_check_quit(pa_core *c);
+void pa_core_check_idle(pa_core *c);
+
+int pa_core_exit(pa_core *c, pa_bool_t force, int retval);
 
 #endif

src/pulsecore/protocol-native.c

@@ -1955,6 +1955,7 @@ static void command_create_record_stream(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_
 
 static void command_exit(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t command, uint32_t tag, pa_tagstruct *t, void *userdata) {
     pa_native_connection *c = PA_NATIVE_CONNECTION(userdata);
+    int ret;
 
     pa_native_connection_assert_ref(c);
     pa_assert(t);
@@ -1965,8 +1966,9 @@ static void command_exit(PA_GCC_UNUSED pa_pdispatch *pd, PA_GCC_UNUSED uint32_t
     }
 
     CHECK_VALIDITY(c->pstream, c->authorized, tag, PA_ERR_ACCESS);
+    ret = pa_core_exit(c->protocol->core, FALSE, 0);
+    CHECK_VALIDITY(c->pstream, ret >= 0, tag, PA_ERR_ACCESS);
 
-    c->protocol->core->mainloop->quit(c->protocol->core->mainloop, 0);
     pa_pstream_send_simple_ack(c->pstream, tag); /* nonsense */
 }
 

src/utils/pactl.c

@@ -607,8 +607,8 @@ static void context_state_callback(pa_context *c, void *userdata) {
                     break;
 
                 case EXIT:
-                    pa_operation_unref(pa_context_exit_daemon(c, NULL, NULL));
+                    pa_operation_unref(pa_context_exit_daemon(c, simple_callback, NULL));
-                    drain();
+                    break;
 
                 case LIST:
                     actions = 8;