JFFS2: Return an error for long filenames

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commit 373d5e71833978fe3d91264d86857762bb92cfe2
tree 0c56caf25b684d7022ba023bcbdf8f963548d6e1
parent 6e62e8c2c7b1e3387d73ecb3f7539314b7a9931e
author Richard Purdie <rpurdie at rpsys.net> Tue, 18 Apr 2006 02:05:46 +0100
committer Richard Purdie <richard at tim.rpsys.net> Tue, 18 Apr 2006 02:05:46 +0100

JFFS2: Return an error for long filenames

Return an error if a name is too long for JFFS2 rather than
corrupting data.

Signed-off-by: Richard Purdie <rpurdie at rpsys.net>

 fs/jffs2/dir.c |    3 +++
 1 files changed, 3 insertions(+)

diff --git a/fs/jffs2/dir.c b/fs/jffs2/dir.c
index 8bc7a50..f92840a 100644
--- a/fs/jffs2/dir.c
+++ b/fs/jffs2/dir.c
@@ -78,6 +78,9 @@ static struct dentry *jffs2_lookup(struc
 
 	D1(printk(KERN_DEBUG "jffs2_lookup()\n"));
 
+	if (target->d_name.len > JFFS2_MAX_NAME_LEN)
+		return ERR_PTR(-ENAMETOOLONG);
+
 	dir_f = JFFS2_INODE_INFO(dir_i);
 	c = JFFS2_SB_INFO(dir_i->i_sb);