smb_unlock_byte_range.c revision da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2007 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
/*
* SMB: unlock_byte_range
*
* This message is sent to unlock the given byte range. Offset, Count, and
* Pid must be identical to that specified in a prior successful lock. If
*
* an unlock references an address range that is not locked, no error is
* generated.
*
* Since Offset is a 32 bit quantity, this request is inappropriate for
* general locking within a very large file.
*
* Client Request Description
* ================================== =================================
*
* UCHAR WordCount; Count of parameter words = 5
* USHORT Fid; File handle
* ULONG Count; Count of bytes to unlock
* ULONG Offset; Offset from start of file
* USHORT ByteCount; Count of data bytes = 0
*
* Server Response Description
* ================================== =================================
*
* UCHAR WordCount; Count of parameter words = 0
* USHORT ByteCount; Count of data bytes = 0
*/
#include <smbsrv/smb_incl.h>
int
smb_com_unlock_byte_range(struct smb_request *sr)
{
uint32_t Length;
uint32_t Offset;
DWORD result;
if (smbsr_decode_vwv(sr, "wll", &sr->smb_fid, &Length, &Offset) != 0) {
smbsr_decode_error(sr);
/* NOTREACHED */
}
sr->fid_ofile = smb_ofile_lookup_by_fid(sr->tid_tree, sr->smb_fid);
if (sr->fid_ofile == NULL) {
smbsr_raise_cifs_error(sr, NT_STATUS_INVALID_HANDLE,
ERRDOS, ERRbadfid);
/* NOTREACHED */
}
result = smb_unlock_range(sr, sr->fid_ofile->f_node,
(off_t)Offset, (uint64_t)Length);
if (result != NT_STATUS_SUCCESS) {
smb_unlock_range_raise_error(sr, result);
/* NOT REACHED */
}
smbsr_encode_empty_result(sr);
return (SDRC_NORMAL_REPLY);
}