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authorLennart Poettering <lennart@poettering.net>2010-04-10 04:52:21 +0200
committerLennart Poettering <lennart@poettering.net>2010-04-10 18:00:21 +0200
commite293f0f07d0dcff74acf756a2b88d7bd949257a7 (patch)
tree602d684ed24f51efd8bc4b8755f31e7f2de0ea0e
parent11857f8daf5a6336865844dedff365f9fa22c8f4 (diff)
target: introduce target_get_runlevel() for distilling SysV compatible runlevel information from a target
-rw-r--r--target.c29
-rw-r--r--target.h5
2 files changed, 33 insertions, 1 deletions
diff --git a/target.c b/target.c
index c80c09d546..f34ba0c36d 100644
--- a/target.c
+++ b/target.c
@@ -89,6 +89,35 @@ 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",
diff --git a/target.h b/target.h
index 6ee9f22013..4b04635f94 100644
--- a/target.h
+++ b/target.h
@@ -29,7 +29,8 @@ typedef struct Target Target;
typedef enum TargetState {
TARGET_DEAD,
TARGET_ACTIVE,
- _TARGET_STATE_MAX
+ _TARGET_STATE_MAX,
+ _TARGET_STATE_INVALID = -1
} TargetState;
struct Target {
@@ -40,4 +41,6 @@ struct Target {
extern const UnitVTable target_vtable;
+int target_get_runlevel(Target *t);
+
#endif