dbus: terminate mechanism daemons after a while

[elogind.git] / src / hostnamed.c

diff --git a/src/hostnamed.c b/src/hostnamed.c
index d05c9023c75cd658f8fc52f8e693bc47d7934ba2..9e8825da75599e3db0b27421d37910fe424c0fa1 100644 (file)
--- a/src/hostnamed.c
+++ b/src/hostnamed.c
@@ -30,6 +30,7 @@
 #include "strv.h"
 #include "dbus-common.h"
 #include "polkit.h"
+#include "def.h"
 
 #define INTERFACE \
         " <interface name=\"org.freedesktop.hostname1\">\n"             \
@@ -85,6 +86,8 @@ static char *data[_PROP_MAX] = {
         NULL
 };
 
+static usec_t remain_until = 0;
+
 static void free_data(void) {
         int p;
 
@@ -513,19 +516,29 @@ static int connect_bus(DBusConnection **_bus) {
 
         bus = dbus_bus_get_private(DBUS_BUS_SYSTEM, &error);
         if (!bus) {
-                log_error("Failed to get system D-Bus connection: %s", error.message);
+                log_error("Failed to get system D-Bus connection: %s", bus_error_message(&error));
                 r = -ECONNREFUSED;
                 goto fail;
         }
 
-        if (!dbus_connection_register_object_path(bus, "/org/freedesktop/hostname1", &hostname_vtable, NULL)) {
+        dbus_connection_set_exit_on_disconnect(bus, FALSE);
+
+        if (!dbus_connection_register_object_path(bus, "/org/freedesktop/hostname1", &hostname_vtable, NULL) ||
+            !dbus_connection_add_filter(bus, bus_exit_idle_filter, &remain_until, NULL)) {
                 log_error("Not enough memory");
                 r = -ENOMEM;
                 goto fail;
         }
 
-        if (dbus_bus_request_name(bus, "org.freedesktop.hostname1", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error) < 0) {
-                log_error("Failed to register name on bus: %s", error.message);
+        r = dbus_bus_request_name(bus, "org.freedesktop.hostname1", DBUS_NAME_FLAG_DO_NOT_QUEUE, &error);
+        if (dbus_error_is_set(&error)) {
+                log_error("Failed to register name on bus: %s", bus_error_message(&error));
+                r = -EEXIST;
+                goto fail;
+        }
+
+        if (r != DBUS_REQUEST_NAME_REPLY_PRIMARY_OWNER) {
+                log_error("Failed to acquire name.");
                 r = -EEXIST;
                 goto fail;
         }
@@ -547,11 +560,14 @@ fail:
 int main(int argc, char *argv[]) {
         int r;
         DBusConnection *bus = NULL;
+        bool exiting = false;
 
         log_set_target(LOG_TARGET_AUTO);
         log_parse_environment();
         log_open();
 
+        umask(0022);
+
         if (argc == 2 && streq(argv[1], "--introspect")) {
                 fputs(DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
                       "<node>\n", stdout);
@@ -569,8 +585,6 @@ int main(int argc, char *argv[]) {
         if (!check_nss())
                 log_warning("Warning: nss-myhostname is not installed. Changing the local hostname might make it unresolveable. Please install nss-myhostname!");
 
-        umask(0022);
-
         r = read_data();
         if (r < 0) {
                 log_error("Failed to read hostname data: %s", strerror(-r));
@@ -581,8 +595,17 @@ int main(int argc, char *argv[]) {
         if (r < 0)
                 goto finish;
 
-        while (dbus_connection_read_write_dispatch(bus, -1))
-                ;
+        remain_until = now(CLOCK_MONOTONIC) + DEFAULT_EXIT_USEC;
+        for (;;) {
+
+                if (!dbus_connection_read_write_dispatch(bus, exiting ? -1 : (int) (DEFAULT_EXIT_USEC/USEC_PER_MSEC)))
+                        break;
+
+                if (!exiting && remain_until < now(CLOCK_MONOTONIC)) {
+                        exiting = true;
+                        bus_async_unregister_and_exit(bus, "org.freedesktop.hostname1");
+                }
+        }
 
         r = 0;