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ksmbd: add default data stream name in FILE_STREAM_INFORMATION 

Windows client expect to get default stream name(::DATA) in
FILE_STREAM_INFORMATION response even if there is no stream data in file.
This patch fix update failure when writing ppt or doc files.

Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Reviewed-By: Tom Talpey <tom@talpey.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Namjae Jeon 2021-09-18 21:02:39 +09:00 committed by Steve French
parent e44fd5081c
commit 9f6323311c
1 changed files with 3 additions and 5 deletions
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8
fs/ksmbd/smb2pdu.c
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@ -4428,17 +4428,15 @@ static void get_file_stream_info(struct ksmbd_work *work,
file_info->NextEntryOffset = cpu_to_le32(next);
}
if (nbytes) {
if (!S_ISDIR(stat.mode)) {
file_info = (struct smb2_file_stream_info *)
&rsp->Buffer[nbytes];
streamlen = smbConvertToUTF16((__le16 *)file_info->StreamName,
"::$DATA", 7, conn->local_nls, 0);
streamlen *= 2;
file_info->StreamNameLength = cpu_to_le32(streamlen);
file_info->StreamSize = S_ISDIR(stat.mode) ? 0 :
cpu_to_le64(stat.size);
file_info->StreamAllocationSize = S_ISDIR(stat.mode) ? 0 :
cpu_to_le64(stat.size);
file_info->StreamSize = 0;
file_info->StreamAllocationSize = 0;
nbytes += sizeof(struct smb2_file_stream_info) + streamlen;
}