core: add new AcceptFD= setting to .busname units

[elogind.git] / src / core / busname.c

diff --git a/src/core/busname.c b/src/core/busname.c
index 49a43feb376f3b4afb2580e84f62bfb787168751..ccef32e9e7daea96536399d01be4da73939cd104 100644 (file)
--- a/src/core/busname.c
+++ b/src/core/busname.c
@@ -43,6 +43,7 @@ static void busname_init(Unit *u) {
         assert(u->load_state == UNIT_STUB);
 
         n->starter_fd = -1;
+        n->accept_fd = true;
 }
 
 static void busname_done(Unit *u) {
@@ -56,11 +57,7 @@ static void busname_done(Unit *u) {
         unit_ref_unset(&n->service);
 
         n->event_source = sd_event_source_unref(n->event_source);
-
-        if (n->starter_fd >= 0) {
-                close_nointr_nofail(n->starter_fd);
-                n->starter_fd = -1;
-        }
+        n->starter_fd = safe_close(n->starter_fd);
 }
 
 static int busname_add_default_default_dependencies(BusName *n) {
@@ -122,8 +119,6 @@ static int busname_add_extras(BusName *n) {
         return 0;
 }
 
-
-
 static int busname_verify(BusName *n) {
         char *e;
 
@@ -176,10 +171,12 @@ static void busname_dump(Unit *u, FILE *f, const char *prefix) {
         fprintf(f,
                 "%sBus Name State: %s\n"
                 "%sResult: %s\n"
-                "%sName: %s\n",
+                "%sName: %s\n"
+                "%sAccept FD: %s\n",
                 prefix, busname_state_to_string(n->state),
                 prefix, busname_result_to_string(n->result),
-                prefix, n->name);
+                prefix, n->name,
+                prefix, yes_no(n->accept_fd));
 }
 
 static void busname_unwatch_fd(BusName *n) {
@@ -197,11 +194,12 @@ static void busname_unwatch_fd(BusName *n) {
 static void busname_close_fd(BusName *n) {
         assert(n);
 
+        busname_unwatch_fd(n);
+
         if (n->starter_fd <= 0)
                 return;
 
-        close_nointr_nofail(n->starter_fd);
-        n->starter_fd = -1;
+        n->starter_fd = safe_close(n->starter_fd);
 }
 
 static int busname_watch_fd(BusName *n) {
@@ -215,7 +213,7 @@ static int busname_watch_fd(BusName *n) {
         if (n->event_source)
                 r = sd_event_source_set_enabled(n->event_source, SD_EVENT_ON);
         else
-                r = sd_event_add_io(UNIT(n)->manager->event, n->starter_fd, EPOLLIN, busname_dispatch_io, n, &n->event_source);
+                r = sd_event_add_io(UNIT(n)->manager->event, &n->event_source, n->starter_fd, EPOLLIN, busname_dispatch_io, n);
         if (r < 0) {
                 log_warning_unit(UNIT(n)->id, "Failed to watch starter fd: %s", strerror(-r));
                 busname_unwatch_fd(n);
@@ -231,7 +229,10 @@ static int busname_open_fd(BusName *n) {
         if (n->starter_fd >= 0)
                 return 0;
 
-        n->starter_fd = bus_kernel_create_starter(UNIT(n)->manager->running_as == SYSTEMD_SYSTEM ? "system" : "user", n->name);
+        n->starter_fd = bus_kernel_create_starter(
+                        UNIT(n)->manager->running_as == SYSTEMD_SYSTEM ? "system" : "user",
+                        n->name, n->accept_fd, n->policy);
+
         if (n->starter_fd < 0) {
                 log_warning_unit(UNIT(n)->id, "Failed to create starter fd: %s", strerror(-n->starter_fd));
                 return n->starter_fd;
@@ -333,6 +334,11 @@ static void busname_enter_running(BusName *n) {
 
         if (unit_stop_pending(UNIT(n))) {
                 log_debug_unit(UNIT(n)->id, "Suppressing activation request on %s since unit stop is scheduled.", UNIT(n)->id);
+
+                /* Flush all queued activation reqeuest by closing and reopening the connection */
+                bus_kernel_drop_one(n->starter_fd);
+
+                busname_enter_listening(n);
                 return;
         }
 
@@ -446,8 +452,7 @@ static int busname_deserialize_item(Unit *u, const char *key, const char *value,
                 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
                         log_debug_unit(u->id, "Failed to parse starter fd value %s", value);
                 else {
-                        if (n->starter_fd >= 0)
-                                close_nointr_nofail(n->starter_fd);
+                        safe_close(n->starter_fd);
                         n->starter_fd = fdset_remove(fds, fd);
                 }
         } else
@@ -541,10 +546,19 @@ DEFINE_STRING_TABLE_LOOKUP(busname_state, BusNameState);
 static const char* const busname_result_table[_BUSNAME_RESULT_MAX] = {
         [BUSNAME_SUCCESS] = "success",
         [BUSNAME_FAILURE_RESOURCES] = "resources",
+        [BUSNAME_FAILURE_SERVICE_FAILED_PERMANENT] = "service-failed-permanent",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(busname_result, BusNameResult);
 
+static const char* const busname_policy_access_table[_BUSNAME_POLICY_ACCESS_MAX] = {
+        [BUSNAME_POLICY_ACCESS_SEE] = "see",
+        [BUSNAME_POLICY_ACCESS_TALK] = "talk",
+        [BUSNAME_POLICY_ACCESS_OWN] = "own",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(busname_policy_access, BusNamePolicyAccess);
+
 const UnitVTable busname_vtable = {
         .object_size = sizeof(BusName),
 
@@ -577,7 +591,6 @@ const UnitVTable busname_vtable = {
 
         .bus_interface = "org.freedesktop.systemd1.BusName",
         .bus_vtable = bus_busname_vtable,
-        .bus_changing_properties = bus_busname_changing_properties,
 
         .status_message_formats = {
                 .finished_start_job = {