linux-kernel - [PATCH] autofs - fix fix symlinks arent checked for expiry

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Message-ID: <20131224094459.20051.4889.stgit@perseus.fritz.box>
Date:	Tue, 24 Dec 2013 17:44:59 +0800
From:	Ian Kent <raven@...maw.net>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	autofs mailing list <autofs@...r.kernel.org>,
	Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: [PATCH] autofs - fix fix symlinks arent checked for expiry

When following a symlink the last_used counter is unconditionally
updated causing the expire checks from user space to prevent
expiry. Opps!

Signed-off-by: Ian Kent <raven@...maw.net>
---
 fs/autofs4/symlink.c |    3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/autofs4/symlink.c b/fs/autofs4/symlink.c
index 061a692..1e8ea19 100644
--- a/fs/autofs4/symlink.c
+++ b/fs/autofs4/symlink.c
@@ -14,8 +14,9 @@
 
 static void *autofs4_follow_link(struct dentry *dentry, struct nameidata *nd)
 {
+	struct autofs_sb_info *sbi = autofs4_sbi(dentry->d_sb);
 	struct autofs_info *ino = autofs4_dentry_ino(dentry);
-	if (ino)
+	if (ino && !autofs4_oz_mode(sbi))
 		ino->last_used = jiffies;
 	nd_set_link(nd, dentry->d_inode->i_private);
 	return NULL;

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