linux-kernel - [PATCH 4/5] NFS: Fix nfs_path() to always return a '/' at the beginning of the path

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Message-ID: <20090622190914.27923.80056.stgit@heimdal.trondhjem.org>
Date:	Mon, 22 Jun 2009 15:09:14 -0400
From:	Trond Myklebust <Trond.Myklebust@...app.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Al Viro <viro@...IV.linux.org.uk>,
	Christoph Hellwig <hch@...radead.org>,
	linux-fsdevel@...r.kernel.org, linux-nfs@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 4/5] NFS: Fix nfs_path() to always return a '/' at the
 beginning of the path

Signed-off-by: Trond Myklebust <Trond.Myklebust@...app.com>
---

 fs/nfs/namespace.c |    5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)


diff --git a/fs/nfs/namespace.c b/fs/nfs/namespace.c
index f01caec..40c7667 100644
--- a/fs/nfs/namespace.c
+++ b/fs/nfs/namespace.c
@@ -65,6 +65,11 @@ char *nfs_path(const char *base,
 		dentry = dentry->d_parent;
 	}
 	spin_unlock(&dcache_lock);
+	if (*end != '/') {
+		if (--buflen < 0)
+			goto Elong;
+		*--end = '/';
+	}
 	namelen = strlen(base);
 	/* Strip off excess slashes in base string */
 	while (namelen > 0 && base[namelen - 1] == '/')

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