---

yaml
---
r: 114801
b: refs/heads/master
c: c0f54d3
h: refs/heads/master
i:
  114799: e1dd58e
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: bb979d7fc360bc37cbaff43a6fafceb897cb5e47
+refs/heads/master: c0f54d3e54fd7ac6723b2125d881f1b25d21ed16

trunk/fs/autofs4/autofs_i.h

@@ -63,6 +63,9 @@ struct autofs_info {
 	unsigned long last_used;
 	atomic_t count;
 
+	uid_t uid;
+	gid_t gid;
+
 	mode_t	mode;
 	size_t	size;
 

trunk/fs/autofs4/inode.c

@@ -53,6 +53,8 @@ struct autofs_info *autofs4_init_ino(struct autofs_info *ino,
 		atomic_set(&ino->count, 0);
 	}
 
+	ino->uid = 0;
+	ino->gid = 0;
 	ino->mode = mode;
 	ino->last_used = jiffies;
 

trunk/fs/autofs4/waitq.c

@@ -457,6 +457,40 @@ int autofs4_wait(struct autofs_sb_info *sbi, struct dentry *dentry,
 
 	status = wq->status;
 
+	/*
+	 * For direct and offset mounts we need to track the requester's
+	 * uid and gid in the dentry info struct. This is so it can be
+	 * supplied, on request, by the misc device ioctl interface.
+	 * This is needed during daemon resatart when reconnecting
+	 * to existing, active, autofs mounts. The uid and gid (and
+	 * related string values) may be used for macro substitution
+	 * in autofs mount maps.
+	 */
+	if (!status) {
+		struct autofs_info *ino;
+		struct dentry *de = NULL;
+
+		/* direct mount or browsable map */
+		ino = autofs4_dentry_ino(dentry);
+		if (!ino) {
+			/* If not lookup actual dentry used */
+			de = d_lookup(dentry->d_parent, &dentry->d_name);
+			if (de)
+				ino = autofs4_dentry_ino(de);
+		}
+
+		/* Set mount requester */
+		if (ino) {
+			spin_lock(&sbi->fs_lock);
+			ino->uid = wq->uid;
+			ino->gid = wq->gid;
+			spin_unlock(&sbi->fs_lock);
+		}
+
+		if (de)
+			dput(de);
+	}
+
 	/* Are we the last process to need status? */
 	mutex_lock(&sbi->wq_mutex);
 	if (!--wq->wait_ctr)