[PATCH] fs/ntfs3: disable the 'ads' mount option by default

[PATCH] fs/ntfs3: disable the 'ads' mount option by default

[Hungyu Lin]

Since commit be310476e886 ("fs/ntfs3: Add basic support for alternative
data streams") the 'ads' mount option is enabled by default, and
ntfs_nls_to_utf16() treats a ':' inside a name as the start of a stream
name. Existing files and directories whose names contain ':' are still
listed by readdir but can no longer be looked up, and such names can no
longer be created.

Make 'ads' opt-in, so that volumes mounted without it behave as before.

Fixes: be310476e886 ("fs/ntfs3: Add basic support for alternative data streams")
Reported-by: Clément Smagghe <cle.smagghe@gmail.com>
Closes: https://lore.kernel.org/all/CAJ6F8CFgkgksyk6YM3NdMkQNhSFWV4depC4c-mHvpDHpnjhM-Q@mail.gmail.com/
Cc: stable@vger.kernel.org
Signed-off-by: Hungyu Lin <dennylin0707@gmail.com>
---
 fs/ntfs3/super.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/fs/ntfs3/super.c b/fs/ntfs3/super.c
index 29aabdc8a801..0c317cda836b 100644
--- a/fs/ntfs3/super.c
+++ b/fs/ntfs3/super.c
@@ -1949,7 +1949,6 @@ static int ntfs_init_fs_context(struct fs_context *fc)
 	opts->fs_gid = current_gid();
 	opts->fs_fmask_inv = opts->fs_dmask_inv = ~current_umask();
 	opts->prealloc = 1;
-	opts->ads = 1;
 	opts->ugm = 1;
 
 #ifdef CONFIG_NTFS3_FS_POSIX_ACL
-- 
2.43.0