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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>
hifive-unleashed-5.1
Namjae Jeon 2012-03-23 15:02:39 -07:00 committed by Linus Torvalds
parent 41f0c02eac
commit d533df07c2
1 changed files with 1 additions and 1 deletions
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2
fs/fat/namei_vfat.c
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@ -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)