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authorNamjae Jeon <linkinjeon@gmail.com>2012-03-23 15:02:39 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-23 16:58:40 -0700
commitd533df07c20c7b59b0559a3ac38fb45c81ffd6bb (patch)
tree7b6746dd28654291742a455d46726c0bac461860 /fs
parent41f0c02eacec9f984adb22e8fecda49e13b7eb13 (diff)
downloadlwn-d533df07c20c7b59b0559a3ac38fb45c81ffd6bb.tar.gz
lwn-d533df07c20c7b59b0559a3ac38fb45c81ffd6bb.zip
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>
Diffstat (limited to 'fs')
-rw-r--r--fs/fat/namei_vfat.c2
1 files changed, 1 insertions, 1 deletions
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)