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/*
* 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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright 2017 Nexenta Systems, Inc. All rights reserved.
*/
/*
* 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_kproto.h>
smb_sdrc_t
smb_pre_unlock_byte_range(smb_request_t *sr)
{
DTRACE_SMB_START(op__UnlockByteRange, smb_request_t *, sr);
return (SDRC_SUCCESS);
}
void
smb_post_unlock_byte_range(smb_request_t *sr)
{
DTRACE_SMB_DONE(op__UnlockByteRange, smb_request_t *, sr);
}
smb_sdrc_t
smb_com_unlock_byte_range(smb_request_t *sr)
{
uint32_t Length;
uint32_t Offset;
uint32_t lk_pid;
DWORD result;
if (smbsr_decode_vwv(sr, "wll", &sr->smb_fid, &Length, &Offset) != 0)
return (SDRC_ERROR);
smbsr_lookup_file(sr);
if (sr->fid_ofile == NULL) {
smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid);
return (SDRC_ERROR);
}
/* Note: SMB1 locking uses 16-bit PIDs. */
lk_pid = sr->smb_pid & 0xFFFF;
result = smb_unlock_range(sr, (uint64_t)Offset, (uint64_t)Length,
lk_pid);
if (result != NT_STATUS_SUCCESS) {
smbsr_error(sr, NT_STATUS_RANGE_NOT_LOCKED,
ERRDOS, ERROR_NOT_LOCKED);
return (SDRC_ERROR);
}
if (smbsr_encode_empty_result(sr))
return (SDRC_ERROR);
return (SDRC_SUCCESS);
}
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