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ntfs: apply Windows name checks only with windows_names

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The windows_names mount option is documented to reject names containing
characters forbidden by Windows. However, ntfs_check_bad_windows_name()
unconditionally rejects those characters before checking the mount option.

Move the character validation after the option check so a default NTFS
mount accepts POSIX names such as names containing ':'. Mounts using
windows_names retain the existing Windows-compatible validation, including
reserved device names and trailing spaces or dots.

Fixes: af0db57d42 ("ntfs: update inode operations")
Reviewed-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
This commit is contained in:
Namjae Jeon 2026-07-25 12:00:00 +09:00
parent dc09bf79b7
commit 71feaa7686
1 changed files with 3 additions and 3 deletions
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6
fs/ntfs/namei.c
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@ -61,12 +61,12 @@ static int ntfs_check_bad_windows_name(struct ntfs_volume *vol,
const __le16 *wc,
unsigned int wc_len)
{
if (ntfs_check_bad_char(wc, wc_len))
return -EINVAL;
if (!NVolCheckWindowsNames(vol))
return 0;
if (ntfs_check_bad_char(wc, wc_len))
return -EINVAL;
/* Check for trailing space or dot. */
if (wc_len > 0 &&
(wc[wc_len - 1] == cpu_to_le16(' ') ||