[PATCH 4/4] cifs: Improve handling of name surrogate reparse points in reparse.c
From: Pali Rohár
Date: Sun Dec 22 2024 - 10:00:11 EST
Like previous changes for file inode.c, handle directory name surrogate
reparse points generally also in reparse.c.
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
---
fs/smb/client/reparse.c | 19 ++++++++-----------
1 file changed, 8 insertions(+), 11 deletions(-)
diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c
index 63a95ecc7542..6ffda4455f9b 100644
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -1222,16 +1222,6 @@ bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
bool ok;
switch (tag) {
- case IO_REPARSE_TAG_INTERNAL:
- if (!(fattr->cf_cifsattrs & ATTR_DIRECTORY))
- return false;
- fallthrough;
- case IO_REPARSE_TAG_DFS:
- case IO_REPARSE_TAG_DFSR:
- case IO_REPARSE_TAG_MOUNT_POINT:
- /* See cifs_create_junction_fattr() */
- fattr->cf_mode = S_IFDIR | 0711;
- break;
case IO_REPARSE_TAG_LX_SYMLINK:
case IO_REPARSE_TAG_LX_FIFO:
case IO_REPARSE_TAG_AF_UNIX:
@@ -1249,7 +1239,14 @@ bool cifs_reparse_point_to_fattr(struct cifs_sb_info *cifs_sb,
fattr->cf_mode |= S_IFLNK;
break;
default:
- return false;
+ if (!(fattr->cf_cifsattrs & ATTR_DIRECTORY))
+ return false;
+ if (!IS_REPARSE_TAG_NAME_SURROGATE(tag) &&
+ tag != IO_REPARSE_TAG_INTERNAL)
+ return false;
+ /* See cifs_create_junction_fattr() */
+ fattr->cf_mode = S_IFDIR | 0711;
+ break;
}
fattr->cf_dtype = S_DT(fattr->cf_mode);
--
2.20.1