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Commit 07108d0e authored by Steve French's avatar Steve French Committed by Steve French
Browse files

cifs: Add minor debug message during negprot 



Check for unknown security mode flags during negotiate protocol
if debugging enabled.

Signed-off-by: default avatarSteve French <smfrench@gmail.com>
Reviewed-by: default avatarPavel Shilovsky <pshilov@microsoft.com>
parent 7ea884c7

fs/cifs/smb2pdu.c

+3 −1
Original line number Diff line number Diff line
@@ -584,8 +584,10 @@ SMB2_negotiate(const unsigned int xid, struct cifs_ses *ses) 
			       SMB2_MAX_BUFFER_SIZE);

	server->max_read = le32_to_cpu(rsp->MaxReadSize);

	server->max_write = le32_to_cpu(rsp->MaxWriteSize);

	/* BB Do we need to validate the SecurityMode? */

	server->sec_mode = le16_to_cpu(rsp->SecurityMode);

	if ((server->sec_mode & SMB2_SEC_MODE_FLAGS_ALL) != server->sec_mode)

		cifs_dbg(FYI, "Server returned unexpected security mode 0x%x\n",

				server->sec_mode);

	server->capabilities = le32_to_cpu(rsp->Capabilities);

	/* Internal types */

	server->capabilities |= SMB2_NT_FIND | SMB2_LARGE_FILES;

fs/cifs/smb2pdu.h

+2 −0
Original line number Diff line number Diff line
@@ -249,6 +249,8 @@ struct smb2_negotiate_req { 
/* SecurityMode flags */

#define	SMB2_NEGOTIATE_SIGNING_ENABLED	0x0001

#define SMB2_NEGOTIATE_SIGNING_REQUIRED	0x0002

#define SMB2_SEC_MODE_FLAGS_ALL		0x0003



/* Capabilities flags */

#define SMB2_GLOBAL_CAP_DFS		0x00000001

#define SMB2_GLOBAL_CAP_LEASING		0x00000002 /* Resp only New to SMB2.1 */