X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=security%2Fkeys%2Fgc.c;h=eaddaceda14eab077512f75081f102cf00157566;hb=afc360e8a1256acb7579a6f5b6f2c30b85b39301;hp=3c90807476eb0e293a85940daff55c30bf636169;hpb=7fdfbe08a2b3e2bf776e2f2b341768ba93c2e158;p=platform%2Fkernel%2Flinux-starfive.git

diff --git a/security/keys/gc.c b/security/keys/gc.c
index 3c90807..eaddace 100644
--- a/security/keys/gc.c
+++ b/security/keys/gc.c
@@ -67,6 +67,19 @@ void key_schedule_gc(time64_t gc_at)
 }
 
 /*
+ * Set the expiration time on a key.
+ */
+void key_set_expiry(struct key *key, time64_t expiry)
+{
+	key->expiry = expiry;
+	if (expiry != TIME64_MAX) {
+		if (!(key->type->flags & KEY_TYPE_INSTANT_REAP))
+			expiry += key_gc_delay;
+		key_schedule_gc(expiry);
+	}
+}
+
+/*
  * Schedule a dead links collection run.
  */
 void key_schedule_gc_links(void)
@@ -176,7 +189,6 @@ static void key_garbage_collector(struct work_struct *work)
 	static u8 gc_state;		/* Internal persistent state */
 #define KEY_GC_REAP_AGAIN	0x01	/* - Need another cycle */
 #define KEY_GC_REAPING_LINKS	0x02	/* - We need to reap links */
-#define KEY_GC_SET_TIMER	0x04	/* - We need to restart the timer */
 #define KEY_GC_REAPING_DEAD_1	0x10	/* - We need to mark dead keys */
 #define KEY_GC_REAPING_DEAD_2	0x20	/* - We need to reap dead key links */
 #define KEY_GC_REAPING_DEAD_3	0x40	/* - We need to reap dead keys */
@@ -184,21 +196,17 @@ static void key_garbage_collector(struct work_struct *work)
 
 	struct rb_node *cursor;
 	struct key *key;
-	time64_t new_timer, limit;
+	time64_t new_timer, limit, expiry;
 
 	kenter("[%lx,%x]", key_gc_flags, gc_state);
 
 	limit = ktime_get_real_seconds();
-	if (limit > key_gc_delay)
-		limit -= key_gc_delay;
-	else
-		limit = key_gc_delay;
 
 	/* Work out what we're going to be doing in this pass */
 	gc_state &= KEY_GC_REAPING_DEAD_1 | KEY_GC_REAPING_DEAD_2;
 	gc_state <<= 1;
 	if (test_and_clear_bit(KEY_GC_KEY_EXPIRED, &key_gc_flags))
-		gc_state |= KEY_GC_REAPING_LINKS | KEY_GC_SET_TIMER;
+		gc_state |= KEY_GC_REAPING_LINKS;
 
 	if (test_and_clear_bit(KEY_GC_REAP_KEYTYPE, &key_gc_flags))
 		gc_state |= KEY_GC_REAPING_DEAD_1;
@@ -233,8 +241,11 @@ continue_scanning:
 			}
 		}
 
-		if (gc_state & KEY_GC_SET_TIMER) {
-			if (key->expiry > limit && key->expiry < new_timer) {
+		expiry = key->expiry;
+		if (expiry != TIME64_MAX) {
+			if (!(key->type->flags & KEY_TYPE_INSTANT_REAP))
+				expiry += key_gc_delay;
+			if (expiry > limit && expiry < new_timer) {
 				kdebug("will expire %x in %lld",
 				       key_serial(key), key->expiry - limit);
 				new_timer = key->expiry;
@@ -276,7 +287,7 @@ maybe_resched:
 	 */
 	kdebug("pass complete");
 
-	if (gc_state & KEY_GC_SET_TIMER && new_timer != (time64_t)TIME64_MAX) {
+	if (new_timer != TIME64_MAX) {
 		new_timer += key_gc_delay;
 		key_schedule_gc(new_timer);
 	}