6.12-stable review patch. If anyone has any objections, please let me know.
------------------
From: Pali Rohár <pali@xxxxxxxxxx>
[ Upstream commit f4ca4f5a36eac9b4da378a0f28cbbe38534a0901 ]
SMB1 NT_TRANSACT_IOCTL/FSCTL_GET_REPARSE_POINT even in non-UNICODE mode
returns reparse buffer in UNICODE/UTF-16 format.
This is because FSCTL_GET_REPARSE_POINT is NT-based IOCTL which does not
distinguish between 8-bit non-UNICODE and 16-bit UNICODE modes and its path
buffers are always encoded in UTF-16.
This change fixes reading of native symlinks in SMB1 when UNICODE session
is not active.
Fixes: ed3e0a149b58 ("smb: client: implement ->query_reparse_point() for SMB1")
Signed-off-by: Pali Rohár <pali@xxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
fs/smb/client/smb1ops.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/fs/smb/client/smb1ops.c b/fs/smb/client/smb1ops.c
index abca214f923c2..db3695eddcf9d 100644
--- a/fs/smb/client/smb1ops.c
+++ b/fs/smb/client/smb1ops.c
@@ -1000,12 +1000,11 @@ static int cifs_parse_reparse_point(struct cifs_sb_info *cifs_sb,
{
struct reparse_data_buffer *buf;
TRANSACT_IOCTL_RSP *io = rsp_iov->iov_base;
- bool unicode = !!(io->hdr.Flags2 & SMBFLG2_UNICODE);
u32 plen = le16_to_cpu(io->ByteCount);
buf = (struct reparse_data_buffer *)((__u8 *)&io->hdr.Protocol +
le32_to_cpu(io->DataOffset));
- return parse_reparse_point(buf, plen, cifs_sb, full_path, unicode, data);
+ return parse_reparse_point(buf, plen, cifs_sb, full_path, true, data);
}
static bool
--
2.43.0
