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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* 27 * SMB: unlock_byte_range 28 * 29 * This message is sent to unlock the given byte range. Offset, Count, and 30 * Pid must be identical to that specified in a prior successful lock. If 31 * 32 * an unlock references an address range that is not locked, no error is 33 * generated. 34 * 35 * Since Offset is a 32 bit quantity, this request is inappropriate for 36 * general locking within a very large file. 37 * 38 * Client Request Description 39 * ================================== ================================= 40 * 41 * UCHAR WordCount; Count of parameter words = 5 42 * USHORT Fid; File handle 43 * ULONG Count; Count of bytes to unlock 44 * ULONG Offset; Offset from start of file 45 * USHORT ByteCount; Count of data bytes = 0 46 * 47 * Server Response Description 48 * ================================== ================================= 49 * 50 * UCHAR WordCount; Count of parameter words = 0 51 * USHORT ByteCount; Count of data bytes = 0 52 */ 53 54 #include <smbsrv/smb_incl.h> 55 56 smb_sdrc_t 57 smb_pre_unlock_byte_range(smb_request_t *sr) 58 { 59 DTRACE_SMB_1(op__UnlockByteRange__start, smb_request_t *, sr); 60 return (SDRC_SUCCESS); 61 } 62 63 void 64 smb_post_unlock_byte_range(smb_request_t *sr) 65 { 66 DTRACE_SMB_1(op__UnlockByteRange__done, smb_request_t *, sr); 67 } 68 69 smb_sdrc_t 70 smb_com_unlock_byte_range(smb_request_t *sr) 71 { 72 uint32_t Length; 73 uint32_t Offset; 74 DWORD result; 75 76 if (smbsr_decode_vwv(sr, "wll", &sr->smb_fid, &Length, &Offset) != 0) 77 return (SDRC_ERROR); 78 79 smbsr_lookup_file(sr); 80 if (sr->fid_ofile == NULL) { 81 smbsr_error(sr, NT_STATUS_INVALID_HANDLE, ERRDOS, ERRbadfid); 82 return (SDRC_ERROR); 83 } 84 85 result = smb_unlock_range(sr, sr->fid_ofile->f_node, 86 (u_offset_t)Offset, (uint64_t)Length); 87 if (result != NT_STATUS_SUCCESS) { 88 smbsr_error(sr, NT_STATUS_RANGE_NOT_LOCKED, 89 ERRDOS, ERRnotlocked); 90 return (SDRC_ERROR); 91 } 92 93 if (smbsr_encode_empty_result(sr)) 94 return (SDRC_ERROR); 95 96 return (SDRC_SUCCESS); 97 } 98