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Do not send ClientGUID on SMB2.02 dialect

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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: Steve French <smfrench@gmail.com>
CC: Sachin Prabhu <sprabhu@redhat.com>
This commit is contained in:
Steve French 2014-05-13 13:37:45 -07:00
parent 39552ea812
commit 3c5f9be108
1 changed files with 6 additions and 1 deletions
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7
fs/cifs/smb2pdu.c
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@ -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 */