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Commit 3c5f9be1 authored by Steve French's avatar Steve French
Browse files

Do not send ClientGUID on SMB2.02 dialect 



ClientGUID must be zero for SMB2.02 dialect.  See section 2.2.3
of MS-SMB2. For SMB2.1 and later it must be non-zero.

Signed-off-by: default avatarSteve French <smfrench@gmail.com>
CC: Sachin Prabhu <sprabhu@redhat.com>
parent 39552ea8

fs/cifs/smb2pdu.c

+6 −1
Original line number Diff line number Diff line
@@ -375,7 +375,12 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) 


	req->Capabilities = cpu_to_le32(ses->server->vals->req_capabilities);



	memcpy(req->ClientGUID, server->client_guid, SMB2_CLIENT_GUID_SIZE);

	/* ClientGUID must be zero for SMB2.02 dialect */

	if (ses->server->vals->protocol_id == SMB20_PROT_ID)

		memset(req->ClientGUID, 0, SMB2_CLIENT_GUID_SIZE);

	else

		memcpy(req->ClientGUID, server->client_guid,

			SMB2_CLIENT_GUID_SIZE);



	iov[0].iov_base = (char *)req;

	/* 4 for rfc1002 length field */