main: remove testing assert

[elogind.git] / target.c

diff --git a/target.c b/target.c
index 6754676b9bf3146bf94fcd7cf7bd6f04f2493253..5c83dbaaf847fd022a28172e0b1e8c7f2b94ffc1 100644 (file)
--- a/target.c
+++ b/target.c
@@ -1,26 +1,140 @@
 /*-*- Mode: C; c-basic-offset: 8 -*-*/
 
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  systemd 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 General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+#include <signal.h>
+
 #include "unit.h"
 #include "target.h"
 #include "load-fragment.h"
+#include "log.h"
+
+static const UnitActiveState state_translation_table[_TARGET_STATE_MAX] = {
+        [TARGET_DEAD] = UNIT_INACTIVE,
+        [TARGET_ACTIVE] = UNIT_ACTIVE
+};
+
+static const char* const state_string_table[_TARGET_STATE_MAX] = {
+        [TARGET_DEAD] = "dead",
+        [TARGET_ACTIVE] = "active"
+};
+
+static void target_init(Unit *u) {
+        Target *t = TARGET(u);
+
+        assert(t);
+        assert(u->meta.load_state == UNIT_STUB);
+
+        t->state = 0;
+}
+
+static void target_dump(Unit *u, FILE *f, const char *prefix) {
+        Target *t = TARGET(u);
+
+        assert(t);
+        assert(f);
+
+        fprintf(f,
+                "%sTarget State: %s\n",
+                prefix, state_string_table[t->state]);
+}
+
+static void target_set_state(Target *t, TargetState state) {
+        TargetState old_state;
+        assert(t);
 
-static void target_done(Unit *u) {
-        Target *m = TARGET(u);
+        old_state = t->state;
+        t->state = state;
 
-        assert(m);
+        if (state != old_state)
+                log_debug("%s changed %s → %s", unit_id(UNIT(t)), state_string_table[old_state], state_string_table[state]);
 
-        /* Nothing here for now */
+        unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state]);
+}
+
+static int target_start(Unit *u) {
+        Target *t = TARGET(u);
+
+        assert(t);
+        assert(t->state == TARGET_DEAD);
+
+        target_set_state(t, TARGET_ACTIVE);
+        return 0;
+}
+
+static int target_stop(Unit *u) {
+        Target *t = TARGET(u);
+
+        assert(t);
+        assert(t->state == TARGET_ACTIVE);
+
+        target_set_state(t, TARGET_DEAD);
+        return 0;
 }
 
 static UnitActiveState target_active_state(Unit *u) {
-        return TARGET(u)->state == TARGET_DEAD ? UNIT_INACTIVE : UNIT_ACTIVE;
+        assert(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 = unit_load_fragment,
-        .done = target_done,
+        .init = target_init,
+        .load = unit_load_fragment_and_dropin,
+
+        .dump = target_dump,
+
+        .start = target_start,
+        .stop = target_stop,
 
         .active_state = target_active_state
 };