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 /* 23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. 24 * Copyright 2014 Nexenta Systems, Inc. All rights reserved. 25 */ 26 27 /* 28 * Dispatch function for SMB2_CHANGE_NOTIFY 29 */ 30 31 #include <smbsrv/smb2_kproto.h> 32 33 static smb_sdrc_t smb2_change_notify_async(smb_request_t *); 34 35 smb_sdrc_t 36 smb2_change_notify(smb_request_t *sr) 37 { 38 smb_node_t *node = NULL; 39 uint16_t StructSize; 40 uint16_t iFlags; 41 uint32_t oBufLength; 42 smb2fid_t smb2fid; 43 uint32_t CompletionFilter; 44 uint32_t reserved; 45 uint32_t status; 46 int rc = 0; 47 48 /* 49 * SMB2 Change Notify request 50 */ 51 rc = smb_mbc_decodef( 52 &sr->smb_data, "wwlqqll", 53 &StructSize, /* w */ 54 &iFlags, /* w */ 55 &oBufLength, /* l */ 56 &smb2fid.persistent, /* q */ 57 &smb2fid.temporal, /* q */ 58 &CompletionFilter, /* l */ 59 &reserved); /* l */ 60 if (rc || StructSize != 32) 61 return (SDRC_ERROR); 62 63 status = smb2sr_lookup_fid(sr, &smb2fid); 64 if (status) 65 goto puterror; 66 67 node = sr->fid_ofile->f_node; 68 if (node == NULL || !smb_node_is_dir(node)) { 69 status = NT_STATUS_INVALID_PARAMETER; 70 goto puterror; 71 } 72 73 /* 74 * Let Change Notify "go async", because it 75 * may block indefinitely. 76 */ 77 status = smb2sr_go_async(sr, smb2_change_notify_async); 78 puterror: 79 ASSERT(status != 0); 80 smb2sr_put_error(sr, status); 81 return (SDRC_SUCCESS); 82 } 83 84 static smb_sdrc_t 85 smb2_change_notify_async(smb_request_t *sr) 86 { 87 uint16_t StructSize; 88 uint16_t iFlags; 89 uint32_t oBufLength; 90 smb2fid_t smb2fid; 91 uint32_t CompletionFilter; 92 uint32_t reserved; 93 uint32_t status; 94 uint16_t DataOff; 95 int rc = 0; 96 97 /* 98 * SMB2 Change Notify request 99 */ 100 rc = smb_mbc_decodef( 101 &sr->smb_data, "wwlqqll", 102 &StructSize, /* w */ 103 &iFlags, /* w */ 104 &oBufLength, /* l */ 105 &smb2fid.persistent, /* q */ 106 &smb2fid.temporal, /* q */ 107 &CompletionFilter, /* l */ 108 &reserved); /* l */ 109 if (rc || StructSize != 32) 110 return (SDRC_ERROR); 111 112 status = smb2sr_lookup_fid(sr, &smb2fid); 113 if (status != 0) { 114 smb2sr_put_error(sr, status); 115 return (SDRC_SUCCESS); 116 } 117 118 CompletionFilter &= FILE_NOTIFY_VALID_MASK; 119 if (iFlags & SMB2_WATCH_TREE) 120 CompletionFilter |= NODE_FLAGS_WATCH_TREE; 121 122 if (oBufLength > smb2_max_trans) 123 oBufLength = smb2_max_trans; 124 sr->raw_data.max_bytes = oBufLength; 125 126 status = smb_notify_common(sr, &sr->raw_data, CompletionFilter); 127 if (status != 0) { 128 smb2sr_put_error(sr, status); 129 return (SDRC_SUCCESS); 130 } 131 132 /* 133 * SMB2 Change Notify reply 134 */ 135 DataOff = SMB2_HDR_SIZE + 8; 136 oBufLength = MBC_LENGTH(&sr->raw_data); 137 rc = smb_mbc_encodef( 138 &sr->reply, "wwlC", 139 9, /* StructSize */ /* w */ 140 DataOff, /* w */ 141 oBufLength, /* l */ 142 &sr->raw_data); /* C */ 143 if (rc) 144 return (SDRC_ERROR); 145 146 return (SDRC_SUCCESS); 147 } 148