From d533df07c20c7b59b0559a3ac38fb45c81ffd6bb Mon Sep 17 00:00:00 2001
From: Namjae Jeon <linkinjeon@gmail.com>
Date: Fri, 23 Mar 2012 15:02:39 -0700
Subject: fat: fix bug in enforcing Long File Name length

Since '*outlen' is initialized to zero, it is currently possible to
create a filename of length (FAT_LFN_LEN + 1) when utf8 is not enabled.
To enforce the FAT_LFN_LEN limit, we must perform one less iteration.

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Ravishankar N <cyberax82@gmail.com>
Acked-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 fs/fat/namei_vfat.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'fs')

diff --git a/fs/fat/namei_vfat.c b/fs/fat/namei_vfat.c
index aae3b4e1057d..98ae804f5273 100644
--- a/fs/fat/namei_vfat.c
+++ b/fs/fat/namei_vfat.c
@@ -522,7 +522,7 @@ xlate_to_uni(const unsigned char *name, int len, unsigned char *outname,
 		op = &outname[*outlen * sizeof(wchar_t)];
 	} else {
 		for (i = 0, ip = name, op = outname, *outlen = 0;
-			 i < len && *outlen <= FAT_LFN_LEN;
+			 i < len && *outlen < FAT_LFN_LEN;
 			 *outlen += 1) {
 			if (escape && (*ip == ':')) {
 				if (i > len - 5)
-- 
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