autofs/autofs-5.1.5-refactor-unlink_active_mounts-in-direct_c.patch

autofs-5.1.5 - refactor unlink_active_mounts() in direct_c

From: Ian Kent <raven@themaw.net>

In daemon/direct.c:unlink_active_mounts() the tree_get_mnt_list() call
returns 1 for a non-empty list which amounts to a mounted check and then
handles the case where the map is being read.

But the check that's carried out is to distinguish between a readmap
and a mount activity which should be handled by the caller instead of
burying the check away in the unlink_active_mounts() function.

Signed-off-by: Ian Kent <raven@themaw.net>
---
 CHANGELOG       |    1 
 daemon/direct.c |   63 +++++++++++++++++++++++++++-----------------------------
 2 files changed, 32 insertions(+), 32 deletions(-)

--- autofs-5.1.4.orig/CHANGELOG
+++ autofs-5.1.4/CHANGELOG
@@ -68,6 +68,7 @@ xx/xx/2018 autofs-5.1.5
 - always use PROC_MOUNTS to make mount lists.
 - add glibc getmntent_r().
 - use local getmntent_r in table_is_mounted().
+- refactor unlink_active_mounts() in direct.c.
 
 19/12/2017 autofs-5.1.4
 - fix spec file url.
--- autofs-5.1.4.orig/daemon/direct.c
+++ autofs-5.1.4/daemon/direct.c
@@ -298,37 +298,12 @@ static int unlink_mount_tree(struct auto
 
 static int unlink_active_mounts(struct autofs_point *ap, struct mnt_list *mnts, struct mapent *me)
 {
-	struct ioctl_ops *ops = get_ioctl_ops();
 	struct list_head list;
 
 	INIT_LIST_HEAD(&list);
 
-	if (tree_get_mnt_list(mnts, &list, me->key, 1)) {
-		if (ap->state == ST_READMAP) {
-			time_t tout = get_exp_timeout(ap, me->source);
-			int save_ioctlfd, ioctlfd;
-
-			save_ioctlfd = ioctlfd = me->ioctlfd;
-
-			if (ioctlfd == -1)
-				ops->open(ap->logopt,
-					  &ioctlfd, me->dev, me->key);
-
-			if (ioctlfd < 0) {
-				error(ap->logopt,
-				     "failed to create ioctl fd for %s",
-				     me->key);
-				return 0;
-			}
-
-			ops->timeout(ap->logopt, ioctlfd, tout);
-
-			if (save_ioctlfd == -1)
-				ops->close(ap->logopt, ioctlfd);
-
-			return 0;
-		}
-	}
+	if (!tree_get_mnt_list(mnts, &list, me->key, 1))
+		return 1;
 
 	if (!unlink_mount_tree(ap, &list)) {
 		debug(ap->logopt,
@@ -371,16 +346,40 @@ int do_mount_autofs_direct(struct autofs
 		if (ret == 0)
 			return -1;
 	} else {
+		if (ap->state == ST_READMAP && is_mounted(me->key, MNTS_ALL)) {
+			time_t tout = get_exp_timeout(ap, me->source);
+			int save_ioctlfd, ioctlfd;
+
+			save_ioctlfd = ioctlfd = me->ioctlfd;
+
+			if (ioctlfd == -1)
+				ops->open(ap->logopt,
+					  &ioctlfd, me->dev, me->key);
+
+			if (ioctlfd < 0) {
+				error(ap->logopt,
+				     "failed to create ioctl fd for %s",
+				     me->key);
+				return 0;
+			}
+
+			ops->timeout(ap->logopt, ioctlfd, tout);
+
+			if (save_ioctlfd == -1)
+				ops->close(ap->logopt, ioctlfd);
+
+			return 0;
+		}
+
 		/*
-		 * A return of 0 indicates we're re-reading the map.
 		 * A return of 1 indicates we successfully unlinked
-		 * the mount tree if there was one. A return of -1
-		 * inducates we failed to unlink the mount tree so
+		 * the mount tree if there was one. A return of 0
+		 * indicates we failed to unlink the mount tree so
 		 * we have to return a failure.
 		 */
 		ret = unlink_active_mounts(ap, mnts, me);
-		if (ret == -1 || ret == 0)
-			return ret;
+		if (!ret)
+			return -1;
 
 		if (me->ioctlfd != -1) {
 			error(ap->logopt, "active direct mount %s", me->key);