1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 /* 29 * SMB: unlock_byte_range 30 * 31 * This message is sent to unlock the given byte range. Offset, Count, and 32 * Pid must be identical to that specified in a prior successful lock. If 33 * 34 * an unlock references an address range that is not locked, no error is 35 * generated. 36 * 37 * Since Offset is a 32 bit quantity, this request is inappropriate for 38 * general locking within a very large file. 39 * 40 * Client Request Description 41 * ================================== ================================= 42 * 43 * UCHAR WordCount; Count of parameter words = 5 44 * USHORT Fid; File handle 45 * ULONG Count; Count of bytes to unlock 46 * ULONG Offset; Offset from start of file 47 * USHORT ByteCount; Count of data bytes = 0 48 * 49 * Server Response Description 50 * ================================== ================================= 51 * 52 * UCHAR WordCount; Count of parameter words = 0 53 * USHORT ByteCount; Count of data bytes = 0 54 */ 55 56 #include <smbsrv/smb_incl.h> 57 58 smb_sdrc_t 59 smb_pre_unlock_byte_range(smb_request_t *sr) 60 { 61 DTRACE_SMB_1(op__UnlockByteRange__start, smb_request_t *, sr); 62 return (SDRC_SUCCESS); 63 } 64 65 void 66 smb_post_unlock_byte_range(smb_request_t *sr) 67 { 68 DTRACE_SMB_1(op__UnlockByteRange__done, smb_request_t *, sr); 69 } 70 71 smb_sdrc_t 72 smb_com_unlock_byte_range(smb_request_t *sr) 73 { 74 uint32_t Length; 75 uint32_t Offset; 76 DWORD result; 77 78 if (smbsr_decode_vwv(sr, "wll", &sr->smb_fid, &Length, &Offset) != 0) 79 return (SDRC_ERROR); 80 81 sr->fid_ofile = smb_ofile_lookup_by_fid(sr->tid_tree, sr->smb_fid); 82 if (sr->fid_ofile == NULL) { 83 smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid); 84 return (SDRC_ERROR); 85 } 86 87 result = smb_unlock_range(sr, sr->fid_ofile->f_node, 88 (u_offset_t)Offset, (uint64_t)Length); 89 if (result != NT_STATUS_SUCCESS) { 90 smbsr_error(sr, NT_STATUS_RANGE_NOT_LOCKED, 91 ERRDOS, ERRnotlocked); 92 return (SDRC_ERROR); 93 } 94 95 if (smbsr_encode_empty_result(sr)) 96 return (SDRC_ERROR); 97 98 return (SDRC_SUCCESS); 99 } 100