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| author | Namjae Jeon <linkinjeon@gmail.com> | 2012-03-23 15:02:39 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-03-23 16:58:40 -0700 |
| commit | d533df07c20c7b59b0559a3ac38fb45c81ffd6bb (patch) | |
| tree | 7b6746dd28654291742a455d46726c0bac461860 /fs | |
| parent | 41f0c02eacec9f984adb22e8fecda49e13b7eb13 (diff) | |
| download | lwn-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.c | 2 |
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) |