diff options
| author | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2009-08-01 21:30:31 +0900 |
|---|---|---|
| committer | OGAWA Hirofumi <hirofumi@mail.parknet.co.jp> | 2009-08-01 21:35:21 +0900 |
| commit | 67638e4043083cdc6f10386a75fef87ba46eecb3 (patch) | |
| tree | 4bf3c4ba8e5c316f7dcf98083b1a851ce248a2ee /fs/nls | |
| parent | ed680c4ad478d0fee9740f7d029087f181346564 (diff) | |
| download | linux-67638e4043083cdc6f10386a75fef87ba46eecb3.tar.gz | |
fat/nls: Fix handling of utf8 invalid char
With utf8 option, vfat allowed the duplicated filenames. Normal nls returns -EINVAL for invalid char. But utf8s_to_utf16s() skipped the invalid char historically. So, this changes the utf8s_to_utf16s() directly to return -EINVAL for invalid char, because vfat is only user of it. mkdir /mnt/fatfs FILENAME=`echo -ne "invalidutf8char_\\0341_endofchar"` echo "Using filename: $FILENAME" dd if=/dev/zero of=fatfs bs=512 count=128 mkdosfs -F 32 fatfs mount -o loop,utf8 fatfs /mnt/fatfs touch "/mnt/fatfs/$FILENAME" umount /mnt/fatfs mount -o loop,utf8 fatfs /mnt/fatfs touch "/mnt/fatfs/$FILENAME" ls -l /mnt/fatfs umount /mnt/fatfs ---- And the output is: Using filename: invalidutf8char_\0341_endofchar 128+0 records in 128+0 records out 65536 bytes (66 kB) copied, 0.000388118 s, 169 MB/s mkdosfs 2.11 (12 Mar 2005) total 0 -rwxr-xr-x 1 root root 0 Jun 28 19:46 invalidutf8char__endofchar -rwxr-xr-x 1 root root 0 Jun 28 19:46 invalidutf8char__endofchar Tested-by: Marton Balint <cus@fazekas.hu> Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
Diffstat (limited to 'fs/nls')
| -rw-r--r-- | fs/nls/nls_base.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/fs/nls/nls_base.c b/fs/nls/nls_base.c index 477d37d83b31..b25c218671b3 100644 --- a/fs/nls/nls_base.c +++ b/fs/nls/nls_base.c @@ -124,10 +124,10 @@ int utf8s_to_utf16s(const u8 *s, int len, wchar_t *pwcs) while (*s && len > 0) { if (*s & 0x80) { size = utf8_to_utf32(s, len, &u); - if (size < 0) { - /* Ignore character and move on */ - size = 1; - } else if (u >= PLANE_SIZE) { + if (size < 0) + return -EINVAL; + + if (u >= PLANE_SIZE) { u -= PLANE_SIZE; *op++ = (wchar_t) (SURROGATE_PAIR | ((u >> 10) & SURROGATE_BITS)); |