dbus: make data pointer for properties read-only

[elogind.git] / target.c

diff --git a/target.c b/target.c
index b18e50fe5bdf756e49f8bee3fd657ff14f2f7fb5..f34ba0c36df696b06642ddf608e7fe98b3f9cae6 100644 (file)
--- a/target.c
+++ b/target.c
@@ -20,6 +20,7 @@
 ***/
 
 #include <errno.h>
+#include <signal.h>
 
 #include "unit.h"
 #include "target.h"
@@ -36,18 +37,6 @@ static const char* const state_string_table[_TARGET_STATE_MAX] = {
         [TARGET_ACTIVE] = "active"
 };
 
-static int target_init(Unit *u) {
-        int r;
-        assert(u);
-
-        /* Make sure this config file actually exists */
-
-        if ((r = unit_load_fragment_and_dropin(u)) <= 0)
-                return r < 0 ? r : -ENOENT;
-
-        return 0;
-}
-
 static void target_dump(Unit *u, FILE *f, const char *prefix) {
         Target *t = TARGET(u);
 
@@ -63,6 +52,9 @@ static void target_set_state(Target *t, TargetState state) {
         TargetState old_state;
         assert(t);
 
+        if (state == t->state)
+                return;
+
         old_state = t->state;
         t->state = state;
 
@@ -97,10 +89,39 @@ static UnitActiveState target_active_state(Unit *u) {
         return state_translation_table[TARGET(u)->state];
 }
 
+int target_get_runlevel(Target *t) {
+
+        static const struct {
+                const char *special;
+                const int runlevel;
+        } table[] = {
+                { SPECIAL_RUNLEVEL5_TARGET, '5' },
+                { SPECIAL_RUNLEVEL4_TARGET, '4' },
+                { SPECIAL_RUNLEVEL3_TARGET, '3' },
+                { SPECIAL_RUNLEVEL2_TARGET, '2' },
+                { SPECIAL_RUNLEVEL1_TARGET, '1' },
+                { SPECIAL_RUNLEVEL0_TARGET, '0' },
+                { SPECIAL_RUNLEVEL6_TARGET, '6' },
+        };
+
+        unsigned i;
+
+        assert(t);
+
+        /* Tries to determine if this is a SysV runlevel and returns
+         * it if that is so. */
+
+        for (i = 0; i < ELEMENTSOF(table); i++)
+                if (unit_has_name(UNIT(t), table[i].special))
+                        return table[i].runlevel;
+
+        return 0;
+}
+
 const UnitVTable target_vtable = {
         .suffix = ".target",
 
-        .init = target_init,
+        .init = unit_load_fragment_and_dropin,
 
         .dump = target_dump,