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 * This command is used to create or open a file or directory. 28 */ 29 30 31 #include <smbsrv/smb_incl.h> 32 #include <smbsrv/smb_fsops.h> 33 #include <smbsrv/smb_vops.h> 34 35 /* 36 * smb_com_nt_create_andx 37 * 38 * This command is used to create or open a file or directory. 39 * 40 * Client Request Description 41 * ================================= ================================== 42 * 43 * UCHAR WordCount; Count of parameter words = 24 44 * UCHAR AndXCommand; Secondary command; 0xFF = None 45 * UCHAR AndXReserved; Reserved (must be 0) 46 * USHORT AndXOffset; Offset to next command WordCount 47 * UCHAR Reserved; Reserved (must be 0) 48 * USHORT NameLength; Length of Name[] in bytes 49 * ULONG Flags; Create bit set: 50 * 0x02 - Request an oplock 51 * 0x04 - Request a batch oplock 52 * 0x08 - Target of open must be 53 * directory 54 * ULONG RootDirectoryFid; If non-zero, open is relative to 55 * this directory 56 * ACCESS_MASK DesiredAccess; access desired 57 * LARGE_INTEGER AllocationSize; Initial allocation size 58 * ULONG ExtFileAttributes; File attributes 59 * ULONG ShareAccess; Type of share access 60 * ULONG CreateDisposition; Action to take if file exists or 61 * not 62 * ULONG CreateOptions; Options to use if creating a file 63 * ULONG ImpersonationLevel; Security QOS information 64 * UCHAR SecurityFlags; Security tracking mode flags: 65 * 0x1 - SECURITY_CONTEXT_TRACKING 66 * 0x2 - SECURITY_EFFECTIVE_ONLY 67 * USHORT ByteCount; Length of byte parameters 68 * STRING Name[]; File to open or create 69 * 70 * The DesiredAccess parameter is specified in section 3.7 on Access Mask 71 * Encoding. 72 * 73 * If no value is specified, it still allows an application to query 74 * attributes without actually accessing the file. 75 * 76 * The ExtFIleAttributes parameter specifies the file attributes and flags 77 * for the file. The parameter's value is the sum of allowed attributes and 78 * flags defined in section 3.11 on Extended File Attribute Encoding 79 * 80 * The ShareAccess field Specifies how this file can be shared. This 81 * parameter must be some combination of the following values: 82 * 83 * Name Value Meaning 84 * 0 Prevents the file from being shared. 85 * FILE_SHARE_READ 0x00000001 Other open operations can be performed on 86 * the file for read access. 87 * FILE_SHARE_WRITE 0x00000002 Other open operations can be performed on 88 * the file for write access. 89 * FILE_SHARE_DELETE 0x00000004 Other open operations can be performed on 90 * the file for delete access. 91 * 92 * The CreateDisposition parameter can contain one of the following values: 93 * 94 * CREATE_NEW Creates a new file. The function fails if the 95 * specified file already exists. 96 * CREATE_ALWAYS Creates a new file. The function overwrites the file 97 * if it exists. 98 * OPEN_EXISTING Opens the file. The function fails if the file does 99 * not exist. 100 * OPEN_ALWAYS Opens the file, if it exists. If the file does not 101 * exist, act like CREATE_NEW. 102 * TRUNCATE_EXISTING Opens the file. Once opened, the file is truncated so 103 * that its size is zero bytes. The calling process must 104 * open the file with at least GENERIC_WRITE access. The 105 * function fails if the file does not exist. 106 * 107 * The ImpersonationLevel parameter can contain one or more of the 108 * following values: 109 * 110 * SECURITY_ANONYMOUS Specifies to impersonate the client at the 111 * Anonymous impersonation level. 112 * SECURITY_IDENTIFICATION Specifies to impersonate the client at the 113 * Identification impersonation level. 114 * SECURITY_IMPERSONATION Specifies to impersonate the client at the 115 * Impersonation impersonation level. 116 * SECURITY_DELEGATION Specifies to impersonate the client at the 117 * Delegation impersonation level. 118 * 119 * The SecurityFlags parameter can have either of the following two flags 120 * set: 121 * 122 * SECURITY_CONTEXT_TRACKING Specifies that the security tracking mode is 123 * dynamic. If this flag is not specified, 124 * Security Tracking Mode is static. 125 * SECURITY_EFFECTIVE_ONLY Specifies that only the enabled aspects of 126 * the client's security context are available 127 * to the server. If you do not specify this 128 * flag, all aspects of the client's security 129 * context are available. This flag allows the 130 * client to limit the groups and privileges 131 * that a server can use while impersonating the 132 * client. 133 * 134 * The response is as follows: 135 * 136 * Server Response Description 137 * ================================= ================================== 138 * 139 * UCHAR WordCount; Count of parameter words = 26 140 * UCHAR AndXCommand; Secondary 0xFF = None 141 * command; 142 * UCHAR AndXReserved; MBZ 143 * USHORT AndXOffset; Offset to next command WordCount 144 * UCHAR OplockLevel; The oplock level granted 145 * 0 - No oplock granted 146 * 1 - Exclusive oplock granted 147 * 2 - Batch oplock granted 148 * 3 - Level II oplock granted 149 * USHORT Fid; The file ID 150 * ULONG CreateAction; The action taken 151 * TIME CreationTime; The time the file was created 152 * TIME LastAccessTime; The time the file was accessed 153 * TIME LastWriteTime; The time the file was last written 154 * TIME ChangeTime; The time the file was last changed 155 * ULONG ExtFileAttributes; The file attributes 156 * LARGE_INTEGER AllocationSize; The number of bytes allocated 157 * LARGE_INTEGER EndOfFile; The end of file offset 158 * USHORT FileType; 159 * USHORT DeviceState; state of IPC device (e.g. pipe) 160 * BOOLEAN Directory; TRUE if this is a directory 161 * USHORT ByteCount; = 0 162 * 163 * The following SMBs may follow SMB_COM_NT_CREATE_ANDX: 164 * 165 * SMB_COM_READ SMB_COM_READ_ANDX 166 * SMB_COM_IOCTL 167 */ 168 smb_sdrc_t 169 smb_pre_nt_create_andx(smb_request_t *sr) 170 { 171 struct open_param *op = &sr->arg.open; 172 uint8_t SecurityFlags; 173 uint32_t ImpersonationLevel; 174 uint16_t NameLength; 175 int rc; 176 177 bzero(op, sizeof (sr->arg.open)); 178 179 rc = smbsr_decode_vwv(sr, "5.wlllqlllllb", 180 &NameLength, 181 &op->nt_flags, 182 &op->rootdirfid, 183 &op->desired_access, 184 &op->dsize, 185 &op->dattr, 186 &op->share_access, 187 &op->create_disposition, 188 &op->create_options, 189 &ImpersonationLevel, 190 &SecurityFlags); 191 192 if (rc == 0) { 193 if (NameLength == 0) { 194 op->fqi.fq_path.pn_path = "\\"; 195 } else if (NameLength >= MAXPATHLEN) { 196 smbsr_error(sr, NT_STATUS_OBJECT_PATH_NOT_FOUND, 197 ERRDOS, ERROR_PATH_NOT_FOUND); 198 rc = -1; 199 } else { 200 rc = smbsr_decode_data(sr, "%#u", sr, NameLength, 201 &op->fqi.fq_path.pn_path); 202 } 203 } 204 205 op->op_oplock_level = SMB_OPLOCK_NONE; 206 if (op->nt_flags & NT_CREATE_FLAG_REQUEST_OPLOCK) { 207 if (op->nt_flags & NT_CREATE_FLAG_REQUEST_OPBATCH) 208 op->op_oplock_level = SMB_OPLOCK_BATCH; 209 else 210 op->op_oplock_level = SMB_OPLOCK_EXCLUSIVE; 211 } 212 213 DTRACE_SMB_2(op__NtCreateX__start, smb_request_t *, sr, 214 struct open_param *, op); 215 216 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); 217 } 218 219 void 220 smb_post_nt_create_andx(smb_request_t *sr) 221 { 222 DTRACE_SMB_1(op__NtCreateX__done, smb_request_t *, sr); 223 } 224 225 smb_sdrc_t 226 smb_com_nt_create_andx(struct smb_request *sr) 227 { 228 struct open_param *op = &sr->arg.open; 229 unsigned char OplockLevel; 230 unsigned char DirFlag; 231 smb_attr_t attr; 232 smb_node_t *node; 233 int rc; 234 235 if ((op->create_options & FILE_DELETE_ON_CLOSE) && 236 !(op->desired_access & DELETE)) { 237 smbsr_error(sr, NT_STATUS_INVALID_PARAMETER, 238 ERRDOS, ERRbadaccess); 239 return (SDRC_ERROR); 240 } 241 242 if (op->create_disposition > FILE_MAXIMUM_DISPOSITION) { 243 smbsr_error(sr, NT_STATUS_INVALID_PARAMETER, 244 ERRDOS, ERRbadaccess); 245 return (SDRC_ERROR); 246 } 247 248 if (op->dattr & FILE_FLAG_WRITE_THROUGH) 249 op->create_options |= FILE_WRITE_THROUGH; 250 251 if (op->dattr & FILE_FLAG_DELETE_ON_CLOSE) 252 op->create_options |= FILE_DELETE_ON_CLOSE; 253 254 if (op->dattr & FILE_FLAG_BACKUP_SEMANTICS) 255 op->create_options |= FILE_OPEN_FOR_BACKUP_INTENT; 256 257 if (op->create_options & FILE_OPEN_FOR_BACKUP_INTENT) 258 sr->user_cr = smb_user_getprivcred(sr->uid_user); 259 260 if (op->rootdirfid == 0) { 261 op->fqi.fq_dnode = sr->tid_tree->t_snode; 262 } else { 263 sr->smb_fid = (ushort_t)op->rootdirfid; 264 smbsr_lookup_file(sr); 265 if (sr->fid_ofile == NULL) { 266 smbsr_error(sr, NT_STATUS_INVALID_HANDLE, 267 ERRDOS, ERRbadfid); 268 return (SDRC_ERROR); 269 } 270 271 op->fqi.fq_dnode = sr->fid_ofile->f_node; 272 smbsr_disconnect_file(sr); 273 } 274 275 if (smb_common_open(sr) != NT_STATUS_SUCCESS) 276 return (SDRC_ERROR); 277 278 if (STYPE_ISDSK(sr->tid_tree->t_res_type)) { 279 switch (op->op_oplock_level) { 280 case SMB_OPLOCK_EXCLUSIVE: 281 OplockLevel = 1; 282 break; 283 case SMB_OPLOCK_BATCH: 284 OplockLevel = 2; 285 break; 286 case SMB_OPLOCK_LEVEL_II: 287 OplockLevel = 3; 288 break; 289 case SMB_OPLOCK_NONE: 290 default: 291 OplockLevel = 0; 292 break; 293 } 294 295 if (op->create_options & FILE_DELETE_ON_CLOSE) 296 smb_ofile_set_delete_on_close(sr->fid_ofile); 297 298 node = sr->fid_ofile->f_node; 299 DirFlag = smb_node_is_dir(node) ? 1 : 0; 300 if (smb_node_getattr(sr, node, &attr) != 0) { 301 smbsr_error(sr, NT_STATUS_INTERNAL_ERROR, 302 ERRDOS, ERROR_INTERNAL_ERROR); 303 return (SDRC_ERROR); 304 } 305 306 rc = smbsr_encode_result(sr, 34, 0, "bb.wbwlTTTTlqqwwbw", 307 34, 308 sr->andx_com, 309 0x67, 310 OplockLevel, 311 sr->smb_fid, 312 op->action_taken, 313 &attr.sa_crtime, 314 &attr.sa_vattr.va_atime, 315 &attr.sa_vattr.va_mtime, 316 &attr.sa_vattr.va_ctime, 317 op->dattr & FILE_ATTRIBUTE_MASK, 318 attr.sa_vattr.va_size, 319 attr.sa_vattr.va_size, 320 op->ftype, 321 op->devstate, 322 DirFlag, 323 0); 324 } else { 325 /* Named PIPE */ 326 OplockLevel = 0; 327 rc = smbsr_encode_result(sr, 34, 0, "bb.wbwlqqqqlqqwwbw", 328 34, 329 sr->andx_com, 330 0x67, 331 OplockLevel, 332 sr->smb_fid, 333 op->action_taken, 334 0LL, 335 0LL, 336 0LL, 337 0LL, 338 FILE_ATTRIBUTE_NORMAL, 339 0x1000LL, 340 0LL, 341 op->ftype, 342 op->devstate, 343 0, 344 0); 345 } 346 347 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); 348 } 349