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 * This command is used to create or open a file or directory. 30 */ 31 32 33 #include <smbsrv/smb_incl.h> 34 #include <smbsrv/smb_fsops.h> 35 #include <smbsrv/smb_vops.h> 36 37 /* 38 * smb_com_nt_create_andx 39 * 40 * This command is used to create or open a file or directory. 41 * 42 * Client Request Description 43 * ================================= ================================== 44 * 45 * UCHAR WordCount; Count of parameter words = 24 46 * UCHAR AndXCommand; Secondary command; 0xFF = None 47 * UCHAR AndXReserved; Reserved (must be 0) 48 * USHORT AndXOffset; Offset to next command WordCount 49 * UCHAR Reserved; Reserved (must be 0) 50 * USHORT NameLength; Length of Name[] in bytes 51 * ULONG Flags; Create bit set: 52 * 0x02 - Request an oplock 53 * 0x04 - Request a batch oplock 54 * 0x08 - Target of open must be 55 * directory 56 * ULONG RootDirectoryFid; If non-zero, open is relative to 57 * this directory 58 * ACCESS_MASK DesiredAccess; access desired 59 * LARGE_INTEGER AllocationSize; Initial allocation size 60 * ULONG ExtFileAttributes; File attributes 61 * ULONG ShareAccess; Type of share access 62 * ULONG CreateDisposition; Action to take if file exists or 63 * not 64 * ULONG CreateOptions; Options to use if creating a file 65 * ULONG ImpersonationLevel; Security QOS information 66 * UCHAR SecurityFlags; Security tracking mode flags: 67 * 0x1 - SECURITY_CONTEXT_TRACKING 68 * 0x2 - SECURITY_EFFECTIVE_ONLY 69 * USHORT ByteCount; Length of byte parameters 70 * STRING Name[]; File to open or create 71 * 72 * The DesiredAccess parameter is specified in section 3.7 on Access Mask 73 * Encoding. 74 * 75 * If no value is specified, it still allows an application to query 76 * attributes without actually accessing the file. 77 * 78 * The ExtFIleAttributes parameter specifies the file attributes and flags 79 * for the file. The parameter's value is the sum of allowed attributes and 80 * flags defined in section 3.11 on Extended File Attribute Encoding 81 * 82 * The ShareAccess field Specifies how this file can be shared. This 83 * parameter must be some combination of the following values: 84 * 85 * Name Value Meaning 86 * 0 Prevents the file from being shared. 87 * FILE_SHARE_READ 0x00000001 Other open operations can be performed on 88 * the file for read access. 89 * FILE_SHARE_WRITE 0x00000002 Other open operations can be performed on 90 * the file for write access. 91 * FILE_SHARE_DELETE 0x00000004 Other open operations can be performed on 92 * the file for delete access. 93 * 94 * The CreateDisposition parameter can contain one of the following values: 95 * 96 * CREATE_NEW Creates a new file. The function fails if the 97 * specified file already exists. 98 * CREATE_ALWAYS Creates a new file. The function overwrites the file 99 * if it exists. 100 * OPEN_EXISTING Opens the file. The function fails if the file does 101 * not exist. 102 * OPEN_ALWAYS Opens the file, if it exists. If the file does not 103 * exist, act like CREATE_NEW. 104 * TRUNCATE_EXISTING Opens the file. Once opened, the file is truncated so 105 * that its size is zero bytes. The calling process must 106 * open the file with at least GENERIC_WRITE access. The 107 * function fails if the file does not exist. 108 * 109 * The ImpersonationLevel parameter can contain one or more of the 110 * following values: 111 * 112 * SECURITY_ANONYMOUS Specifies to impersonate the client at the 113 * Anonymous impersonation level. 114 * SECURITY_IDENTIFICATION Specifies to impersonate the client at the 115 * Identification impersonation level. 116 * SECURITY_IMPERSONATION Specifies to impersonate the client at the 117 * Impersonation impersonation level. 118 * SECURITY_DELEGATION Specifies to impersonate the client at the 119 * Delegation impersonation level. 120 * 121 * The SecurityFlags parameter can have either of the following two flags 122 * set: 123 * 124 * SECURITY_CONTEXT_TRACKING Specifies that the security tracking mode is 125 * dynamic. If this flag is not specified, 126 * Security Tracking Mode is static. 127 * SECURITY_EFFECTIVE_ONLY Specifies that only the enabled aspects of 128 * the client's security context are available 129 * to the server. If you do not specify this 130 * flag, all aspects of the client's security 131 * context are available. This flag allows the 132 * client to limit the groups and privileges 133 * that a server can use while impersonating the 134 * client. 135 * 136 * The response is as follows: 137 * 138 * Server Response Description 139 * ================================= ================================== 140 * 141 * UCHAR WordCount; Count of parameter words = 26 142 * UCHAR AndXCommand; Secondary 0xFF = None 143 * command; 144 * UCHAR AndXReserved; MBZ 145 * USHORT AndXOffset; Offset to next command WordCount 146 * UCHAR OplockLevel; The oplock level granted 147 * 0 - No oplock granted 148 * 1 - Exclusive oplock granted 149 * 2 - Batch oplock granted 150 * 3 - Level II oplock granted 151 * USHORT Fid; The file ID 152 * ULONG CreateAction; The action taken 153 * TIME CreationTime; The time the file was created 154 * TIME LastAccessTime; The time the file was accessed 155 * TIME LastWriteTime; The time the file was last written 156 * TIME ChangeTime; The time the file was last changed 157 * ULONG ExtFileAttributes; The file attributes 158 * LARGE_INTEGER AllocationSize; The number of bytes allocated 159 * LARGE_INTEGER EndOfFile; The end of file offset 160 * USHORT FileType; 161 * USHORT DeviceState; state of IPC device (e.g. pipe) 162 * BOOLEAN Directory; TRUE if this is a directory 163 * USHORT ByteCount; = 0 164 * 165 * The following SMBs may follow SMB_COM_NT_CREATE_ANDX: 166 * 167 * SMB_COM_READ SMB_COM_READ_ANDX 168 * SMB_COM_IOCTL 169 */ 170 smb_sdrc_t 171 smb_pre_nt_create_andx(smb_request_t *sr) 172 { 173 struct open_param *op = &sr->arg.open; 174 uint8_t SecurityFlags; 175 uint32_t Flags; 176 uint32_t ImpersonationLevel; 177 uint16_t NameLength; 178 int rc; 179 180 bzero(op, sizeof (sr->arg.open)); 181 182 rc = smbsr_decode_vwv(sr, "5.wlllqlllllb", 183 &NameLength, 184 &Flags, 185 &op->rootdirfid, 186 &op->desired_access, 187 &op->dsize, 188 &op->dattr, 189 &op->share_access, 190 &op->create_disposition, 191 &op->create_options, 192 &ImpersonationLevel, 193 &SecurityFlags); 194 195 if (rc == 0) { 196 if (NameLength == 0) { 197 op->fqi.path = "\\"; 198 } else if (NameLength >= MAXPATHLEN) { 199 smbsr_error(sr, NT_STATUS_OBJECT_PATH_NOT_FOUND, 200 ERRDOS, ERROR_PATH_NOT_FOUND); 201 rc = -1; 202 } else { 203 rc = smbsr_decode_data(sr, "%#u", sr, NameLength, 204 &op->fqi.path); 205 } 206 } 207 208 if (Flags) { 209 if (Flags & NT_CREATE_FLAG_REQUEST_OPLOCK) { 210 if (Flags & NT_CREATE_FLAG_REQUEST_OPBATCH) { 211 op->my_flags = MYF_BATCH_OPLOCK; 212 } else { 213 op->my_flags = MYF_EXCLUSIVE_OPLOCK; 214 } 215 } 216 217 if (Flags & NT_CREATE_FLAG_OPEN_TARGET_DIR) 218 op->my_flags |= MYF_MUST_BE_DIRECTORY; 219 } 220 221 DTRACE_SMB_2(op__NtCreateX__start, smb_request_t *, sr, 222 struct open_param *, op); 223 224 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); 225 } 226 227 void 228 smb_post_nt_create_andx(smb_request_t *sr) 229 { 230 DTRACE_SMB_1(op__NtCreateX__done, smb_request_t *, sr); 231 } 232 233 smb_sdrc_t 234 smb_com_nt_create_andx(struct smb_request *sr) 235 { 236 struct open_param *op = &sr->arg.open; 237 unsigned char OplockLevel; 238 unsigned char DirFlag; 239 smb_attr_t new_attr; 240 smb_node_t *node; 241 int rc; 242 243 if ((op->create_options & FILE_DELETE_ON_CLOSE) && 244 !(op->desired_access & DELETE)) { 245 smbsr_error(sr, NT_STATUS_INVALID_PARAMETER, 0, 0); 246 return (SDRC_ERROR); 247 } 248 249 if (op->dattr & FILE_FLAG_WRITE_THROUGH) 250 op->create_options |= FILE_WRITE_THROUGH; 251 252 if (op->dattr & FILE_FLAG_DELETE_ON_CLOSE) 253 op->create_options |= FILE_DELETE_ON_CLOSE; 254 255 if (op->rootdirfid == 0) { 256 op->fqi.dir_snode = sr->tid_tree->t_snode; 257 } else { 258 sr->smb_fid = (ushort_t)op->rootdirfid; 259 sr->fid_ofile = smb_ofile_lookup_by_fid(sr->tid_tree, 260 sr->smb_fid); 261 if (sr->fid_ofile == NULL) { 262 smbsr_error(sr, NT_STATUS_INVALID_HANDLE, 263 ERRDOS, ERRbadfid); 264 return (SDRC_ERROR); 265 } 266 267 op->fqi.dir_snode = sr->fid_ofile->f_node; 268 smbsr_disconnect_file(sr); 269 } 270 271 if (smb_common_open(sr) != NT_STATUS_SUCCESS) 272 return (SDRC_ERROR); 273 274 if (STYPE_ISDSK(sr->tid_tree->t_res_type)) { 275 switch (MYF_OPLOCK_TYPE(op->my_flags)) { 276 case MYF_EXCLUSIVE_OPLOCK : 277 OplockLevel = 1; 278 break; 279 case MYF_BATCH_OPLOCK : 280 OplockLevel = 2; 281 break; 282 case MYF_LEVEL_II_OPLOCK : 283 OplockLevel = 3; 284 break; 285 case MYF_OPLOCK_NONE : 286 default: 287 OplockLevel = 0; 288 break; 289 } 290 291 if (op->create_options & FILE_DELETE_ON_CLOSE) 292 smb_preset_delete_on_close(sr->fid_ofile); 293 294 /* 295 * Set up the directory flag and ensure that 296 * we don't return a stale file size. 297 */ 298 node = sr->fid_ofile->f_node; 299 if (node->attr.sa_vattr.va_type == VDIR) { 300 DirFlag = 1; 301 new_attr.sa_vattr.va_size = 0; 302 } else { 303 DirFlag = 0; 304 new_attr.sa_mask = SMB_AT_SIZE; 305 (void) smb_fsop_getattr(sr, kcred, node, &new_attr); 306 node->attr.sa_vattr.va_size = new_attr.sa_vattr.va_size; 307 } 308 309 rc = smbsr_encode_result(sr, 34, 0, "bb.wbwlTTTTlqqwwbw", 310 34, 311 sr->andx_com, 312 0x67, 313 OplockLevel, 314 sr->smb_fid, 315 op->action_taken, 316 &node->attr.sa_crtime, 317 &node->attr.sa_vattr.va_atime, 318 &node->attr.sa_vattr.va_mtime, 319 &node->attr.sa_vattr.va_ctime, 320 op->dattr & FILE_ATTRIBUTE_MASK, 321 new_attr.sa_vattr.va_size, 322 new_attr.sa_vattr.va_size, 323 op->ftype, 324 op->devstate, 325 DirFlag, 326 0); 327 } else { 328 /* Named PIPE */ 329 OplockLevel = 0; 330 rc = smbsr_encode_result(sr, 34, 0, "bb.wbwlqqqqlqqwwbw", 331 34, 332 sr->andx_com, 333 0x67, 334 OplockLevel, 335 sr->smb_fid, 336 op->action_taken, 337 0LL, 338 0LL, 339 0LL, 340 0LL, 341 FILE_ATTRIBUTE_NORMAL, 342 0x1000LL, 343 0LL, 344 op->ftype, 345 op->devstate, 346 0, 347 0); 348 } 349 350 return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR); 351 } 352