1 // SPDX-License-Identifier: LGPL-2.1 2 /* 3 * 4 * Copyright (C) International Business Machines Corp., 2002, 2011 5 * Etersoft, 2012 6 * Author(s): Pavel Shilovsky (pshilovsky@samba.org), 7 * Steve French (sfrench@us.ibm.com) 8 * 9 */ 10 #include <linux/fs.h> 11 #include <linux/stat.h> 12 #include <linux/slab.h> 13 #include <linux/pagemap.h> 14 #include <asm/div64.h> 15 #include "cifsfs.h" 16 #include "cifspdu.h" 17 #include "cifsglob.h" 18 #include "cifsproto.h" 19 #include "cifs_debug.h" 20 #include "cifs_fs_sb.h" 21 #include "cifs_unicode.h" 22 #include "fscache.h" 23 #include "smb2glob.h" 24 #include "smb2pdu.h" 25 #include "smb2proto.h" 26 #include "cached_dir.h" 27 #include "../common/smb2status.h" 28 29 static struct reparse_data_buffer *reparse_buf_ptr(struct kvec *iov) 30 { 31 struct reparse_data_buffer *buf; 32 struct smb2_ioctl_rsp *io = iov->iov_base; 33 u32 off, count, len; 34 35 count = le32_to_cpu(io->OutputCount); 36 off = le32_to_cpu(io->OutputOffset); 37 if (check_add_overflow(off, count, &len) || len > iov->iov_len) 38 return ERR_PTR(-EIO); 39 40 buf = (struct reparse_data_buffer *)((u8 *)io + off); 41 len = sizeof(*buf); 42 if (count < len || count < le16_to_cpu(buf->ReparseDataLength) + len) 43 return ERR_PTR(-EIO); 44 return buf; 45 } 46 47 static inline __u32 file_create_options(struct dentry *dentry) 48 { 49 struct cifsInodeInfo *ci; 50 51 if (dentry) { 52 ci = CIFS_I(d_inode(dentry)); 53 if (ci->cifsAttrs & ATTR_REPARSE) 54 return OPEN_REPARSE_POINT; 55 } 56 return 0; 57 } 58 59 /* Parse owner and group from SMB3.1.1 POSIX query info */ 60 static int parse_posix_sids(struct cifs_open_info_data *data, 61 struct kvec *rsp_iov) 62 { 63 struct smb2_query_info_rsp *qi = rsp_iov->iov_base; 64 unsigned int out_len = le32_to_cpu(qi->OutputBufferLength); 65 unsigned int qi_len = sizeof(data->posix_fi); 66 int owner_len, group_len; 67 u8 *sidsbuf, *sidsbuf_end; 68 69 if (out_len <= qi_len) 70 return -EINVAL; 71 72 sidsbuf = (u8 *)qi + le16_to_cpu(qi->OutputBufferOffset) + qi_len; 73 sidsbuf_end = sidsbuf + out_len - qi_len; 74 75 owner_len = posix_info_sid_size(sidsbuf, sidsbuf_end); 76 if (owner_len == -1) 77 return -EINVAL; 78 79 memcpy(&data->posix_owner, sidsbuf, owner_len); 80 group_len = posix_info_sid_size(sidsbuf + owner_len, sidsbuf_end); 81 if (group_len == -1) 82 return -EINVAL; 83 84 memcpy(&data->posix_group, sidsbuf + owner_len, group_len); 85 return 0; 86 } 87 88 struct wsl_query_ea { 89 __le32 next; 90 __u8 name_len; 91 __u8 name[SMB2_WSL_XATTR_NAME_LEN + 1]; 92 } __packed; 93 94 #define NEXT_OFF cpu_to_le32(sizeof(struct wsl_query_ea)) 95 96 static const struct wsl_query_ea wsl_query_eas[] = { 97 { .next = NEXT_OFF, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_UID, }, 98 { .next = NEXT_OFF, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_GID, }, 99 { .next = NEXT_OFF, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_MODE, }, 100 { .next = 0, .name_len = SMB2_WSL_XATTR_NAME_LEN, .name = SMB2_WSL_XATTR_DEV, }, 101 }; 102 103 static int check_wsl_eas(struct kvec *rsp_iov) 104 { 105 struct smb2_file_full_ea_info *ea; 106 struct smb2_query_info_rsp *rsp = rsp_iov->iov_base; 107 unsigned long addr; 108 u32 outlen, next; 109 u16 vlen; 110 u8 nlen; 111 u8 *end; 112 113 outlen = le32_to_cpu(rsp->OutputBufferLength); 114 if (outlen < SMB2_WSL_MIN_QUERY_EA_RESP_SIZE || 115 outlen > SMB2_WSL_MAX_QUERY_EA_RESP_SIZE) 116 return -EINVAL; 117 118 ea = (void *)((u8 *)rsp_iov->iov_base + 119 le16_to_cpu(rsp->OutputBufferOffset)); 120 end = (u8 *)rsp_iov->iov_base + rsp_iov->iov_len; 121 for (;;) { 122 if ((u8 *)ea > end - sizeof(*ea)) 123 return -EINVAL; 124 125 nlen = ea->ea_name_length; 126 vlen = le16_to_cpu(ea->ea_value_length); 127 if (nlen != SMB2_WSL_XATTR_NAME_LEN || 128 (u8 *)ea + nlen + 1 + vlen > end) 129 return -EINVAL; 130 131 switch (vlen) { 132 case 4: 133 if (strncmp(ea->ea_data, SMB2_WSL_XATTR_UID, nlen) && 134 strncmp(ea->ea_data, SMB2_WSL_XATTR_GID, nlen) && 135 strncmp(ea->ea_data, SMB2_WSL_XATTR_MODE, nlen)) 136 return -EINVAL; 137 break; 138 case 8: 139 if (strncmp(ea->ea_data, SMB2_WSL_XATTR_DEV, nlen)) 140 return -EINVAL; 141 break; 142 case 0: 143 if (!strncmp(ea->ea_data, SMB2_WSL_XATTR_UID, nlen) || 144 !strncmp(ea->ea_data, SMB2_WSL_XATTR_GID, nlen) || 145 !strncmp(ea->ea_data, SMB2_WSL_XATTR_MODE, nlen) || 146 !strncmp(ea->ea_data, SMB2_WSL_XATTR_DEV, nlen)) 147 break; 148 fallthrough; 149 default: 150 return -EINVAL; 151 } 152 153 next = le32_to_cpu(ea->next_entry_offset); 154 if (!next) 155 break; 156 if (!IS_ALIGNED(next, 4) || 157 check_add_overflow((unsigned long)ea, next, &addr)) 158 return -EINVAL; 159 ea = (void *)addr; 160 } 161 return 0; 162 } 163 164 /* 165 * note: If cfile is passed, the reference to it is dropped here. 166 * So make sure that you do not reuse cfile after return from this func. 167 * 168 * If passing @out_iov and @out_buftype, ensure to make them both large enough 169 * (>= 3) to hold all compounded responses. Caller is also responsible for 170 * freeing them up with free_rsp_buf(). 171 */ 172 static int smb2_compound_op(const unsigned int xid, struct cifs_tcon *tcon, 173 struct cifs_sb_info *cifs_sb, const char *full_path, 174 struct cifs_open_parms *oparms, struct kvec *in_iov, 175 int *cmds, int num_cmds, struct cifsFileInfo *cfile, 176 struct kvec *out_iov, int *out_buftype, struct dentry *dentry) 177 { 178 179 struct reparse_data_buffer *rbuf; 180 struct smb2_compound_vars *vars = NULL; 181 struct kvec *rsp_iov, *iov; 182 struct smb_rqst *rqst; 183 int rc; 184 __le16 *utf16_path = NULL; 185 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; 186 struct cifs_fid fid; 187 struct cifs_ses *ses = tcon->ses; 188 struct TCP_Server_Info *server; 189 int num_rqst = 0, i; 190 int resp_buftype[MAX_COMPOUND]; 191 struct smb2_query_info_rsp *qi_rsp = NULL; 192 struct cifs_open_info_data *idata; 193 struct inode *inode = NULL; 194 int flags = 0; 195 __u8 delete_pending[8] = {1, 0, 0, 0, 0, 0, 0, 0}; 196 unsigned int size[2]; 197 void *data[2]; 198 unsigned int len; 199 int retries = 0, cur_sleep = 1; 200 201 replay_again: 202 /* reinitialize for possible replay */ 203 flags = 0; 204 oplock = SMB2_OPLOCK_LEVEL_NONE; 205 num_rqst = 0; 206 server = cifs_pick_channel(ses); 207 208 vars = kzalloc(sizeof(*vars), GFP_ATOMIC); 209 if (vars == NULL) 210 return -ENOMEM; 211 rqst = &vars->rqst[0]; 212 rsp_iov = &vars->rsp_iov[0]; 213 214 if (smb3_encryption_required(tcon)) 215 flags |= CIFS_TRANSFORM_REQ; 216 217 for (i = 0; i < ARRAY_SIZE(resp_buftype); i++) 218 resp_buftype[i] = CIFS_NO_BUFFER; 219 220 /* We already have a handle so we can skip the open */ 221 if (cfile) 222 goto after_open; 223 224 /* Open */ 225 utf16_path = cifs_convert_path_to_utf16(full_path, cifs_sb); 226 if (!utf16_path) { 227 rc = -ENOMEM; 228 goto finished; 229 } 230 231 /* if there is an existing lease, reuse it */ 232 233 /* 234 * note: files with hardlinks cause unexpected behaviour. As per MS-SMB2, 235 * lease keys are associated with the filepath. We are maintaining lease keys 236 * with the inode on the client. If the file has hardlinks, it is possible 237 * that the lease for a file be reused for an operation on its hardlink or 238 * vice versa. 239 * As a workaround, send request using an existing lease key and if the server 240 * returns STATUS_INVALID_PARAMETER, which maps to EINVAL, send the request 241 * again without the lease. 242 */ 243 if (dentry) { 244 inode = d_inode(dentry); 245 if (CIFS_I(inode)->lease_granted && server->ops->get_lease_key) { 246 oplock = SMB2_OPLOCK_LEVEL_LEASE; 247 server->ops->get_lease_key(inode, &fid); 248 } 249 } 250 251 vars->oparms = *oparms; 252 vars->oparms.fid = &fid; 253 254 rqst[num_rqst].rq_iov = &vars->open_iov[0]; 255 rqst[num_rqst].rq_nvec = SMB2_CREATE_IOV_SIZE; 256 rc = SMB2_open_init(tcon, server, 257 &rqst[num_rqst], &oplock, &vars->oparms, 258 utf16_path); 259 kfree(utf16_path); 260 if (rc) 261 goto finished; 262 263 smb2_set_next_command(tcon, &rqst[num_rqst]); 264 after_open: 265 num_rqst++; 266 rc = 0; 267 268 for (i = 0; i < num_cmds; i++) { 269 /* Operation */ 270 switch (cmds[i]) { 271 case SMB2_OP_QUERY_INFO: 272 rqst[num_rqst].rq_iov = &vars->qi_iov; 273 rqst[num_rqst].rq_nvec = 1; 274 275 if (cfile) { 276 rc = SMB2_query_info_init(tcon, server, 277 &rqst[num_rqst], 278 cfile->fid.persistent_fid, 279 cfile->fid.volatile_fid, 280 FILE_ALL_INFORMATION, 281 SMB2_O_INFO_FILE, 0, 282 sizeof(struct smb2_file_all_info) + 283 PATH_MAX * 2, 0, NULL); 284 } else { 285 rc = SMB2_query_info_init(tcon, server, 286 &rqst[num_rqst], 287 COMPOUND_FID, 288 COMPOUND_FID, 289 FILE_ALL_INFORMATION, 290 SMB2_O_INFO_FILE, 0, 291 sizeof(struct smb2_file_all_info) + 292 PATH_MAX * 2, 0, NULL); 293 } 294 if (!rc && (!cfile || num_rqst > 1)) { 295 smb2_set_next_command(tcon, &rqst[num_rqst]); 296 smb2_set_related(&rqst[num_rqst]); 297 } else if (rc) { 298 goto finished; 299 } 300 num_rqst++; 301 trace_smb3_query_info_compound_enter(xid, ses->Suid, 302 tcon->tid, full_path); 303 break; 304 case SMB2_OP_POSIX_QUERY_INFO: 305 rqst[num_rqst].rq_iov = &vars->qi_iov; 306 rqst[num_rqst].rq_nvec = 1; 307 308 if (cfile) { 309 /* TBD: fix following to allow for longer SIDs */ 310 rc = SMB2_query_info_init(tcon, server, 311 &rqst[num_rqst], 312 cfile->fid.persistent_fid, 313 cfile->fid.volatile_fid, 314 SMB_FIND_FILE_POSIX_INFO, 315 SMB2_O_INFO_FILE, 0, 316 sizeof(struct smb311_posix_qinfo *) + 317 (PATH_MAX * 2) + 318 (sizeof(struct smb_sid) * 2), 0, NULL); 319 } else { 320 rc = SMB2_query_info_init(tcon, server, 321 &rqst[num_rqst], 322 COMPOUND_FID, 323 COMPOUND_FID, 324 SMB_FIND_FILE_POSIX_INFO, 325 SMB2_O_INFO_FILE, 0, 326 sizeof(struct smb311_posix_qinfo *) + 327 (PATH_MAX * 2) + 328 (sizeof(struct smb_sid) * 2), 0, NULL); 329 } 330 if (!rc && (!cfile || num_rqst > 1)) { 331 smb2_set_next_command(tcon, &rqst[num_rqst]); 332 smb2_set_related(&rqst[num_rqst]); 333 } else if (rc) { 334 goto finished; 335 } 336 num_rqst++; 337 trace_smb3_posix_query_info_compound_enter(xid, ses->Suid, 338 tcon->tid, full_path); 339 break; 340 case SMB2_OP_DELETE: 341 trace_smb3_delete_enter(xid, ses->Suid, tcon->tid, full_path); 342 break; 343 case SMB2_OP_MKDIR: 344 /* 345 * Directories are created through parameters in the 346 * SMB2_open() call. 347 */ 348 trace_smb3_mkdir_enter(xid, ses->Suid, tcon->tid, full_path); 349 break; 350 case SMB2_OP_RMDIR: 351 rqst[num_rqst].rq_iov = &vars->si_iov[0]; 352 rqst[num_rqst].rq_nvec = 1; 353 354 size[0] = 1; /* sizeof __u8 See MS-FSCC section 2.4.11 */ 355 data[0] = &delete_pending[0]; 356 357 rc = SMB2_set_info_init(tcon, server, 358 &rqst[num_rqst], COMPOUND_FID, 359 COMPOUND_FID, current->tgid, 360 FILE_DISPOSITION_INFORMATION, 361 SMB2_O_INFO_FILE, 0, data, size); 362 if (rc) 363 goto finished; 364 smb2_set_next_command(tcon, &rqst[num_rqst]); 365 smb2_set_related(&rqst[num_rqst++]); 366 trace_smb3_rmdir_enter(xid, ses->Suid, tcon->tid, full_path); 367 break; 368 case SMB2_OP_SET_EOF: 369 rqst[num_rqst].rq_iov = &vars->si_iov[0]; 370 rqst[num_rqst].rq_nvec = 1; 371 372 size[0] = in_iov[i].iov_len; 373 data[0] = in_iov[i].iov_base; 374 375 if (cfile) { 376 rc = SMB2_set_info_init(tcon, server, 377 &rqst[num_rqst], 378 cfile->fid.persistent_fid, 379 cfile->fid.volatile_fid, 380 current->tgid, 381 FILE_END_OF_FILE_INFORMATION, 382 SMB2_O_INFO_FILE, 0, 383 data, size); 384 } else { 385 rc = SMB2_set_info_init(tcon, server, 386 &rqst[num_rqst], 387 COMPOUND_FID, 388 COMPOUND_FID, 389 current->tgid, 390 FILE_END_OF_FILE_INFORMATION, 391 SMB2_O_INFO_FILE, 0, 392 data, size); 393 } 394 if (!rc && (!cfile || num_rqst > 1)) { 395 smb2_set_next_command(tcon, &rqst[num_rqst]); 396 smb2_set_related(&rqst[num_rqst]); 397 } else if (rc) { 398 goto finished; 399 } 400 num_rqst++; 401 trace_smb3_set_eof_enter(xid, ses->Suid, tcon->tid, full_path); 402 break; 403 case SMB2_OP_SET_INFO: 404 rqst[num_rqst].rq_iov = &vars->si_iov[0]; 405 rqst[num_rqst].rq_nvec = 1; 406 407 size[0] = in_iov[i].iov_len; 408 data[0] = in_iov[i].iov_base; 409 410 if (cfile) { 411 rc = SMB2_set_info_init(tcon, server, 412 &rqst[num_rqst], 413 cfile->fid.persistent_fid, 414 cfile->fid.volatile_fid, current->tgid, 415 FILE_BASIC_INFORMATION, 416 SMB2_O_INFO_FILE, 0, data, size); 417 } else { 418 rc = SMB2_set_info_init(tcon, server, 419 &rqst[num_rqst], 420 COMPOUND_FID, 421 COMPOUND_FID, current->tgid, 422 FILE_BASIC_INFORMATION, 423 SMB2_O_INFO_FILE, 0, data, size); 424 } 425 if (!rc && (!cfile || num_rqst > 1)) { 426 smb2_set_next_command(tcon, &rqst[num_rqst]); 427 smb2_set_related(&rqst[num_rqst]); 428 } else if (rc) { 429 goto finished; 430 } 431 num_rqst++; 432 trace_smb3_set_info_compound_enter(xid, ses->Suid, 433 tcon->tid, full_path); 434 break; 435 case SMB2_OP_RENAME: 436 rqst[num_rqst].rq_iov = &vars->si_iov[0]; 437 rqst[num_rqst].rq_nvec = 2; 438 439 len = in_iov[i].iov_len; 440 441 vars->rename_info.ReplaceIfExists = 1; 442 vars->rename_info.RootDirectory = 0; 443 vars->rename_info.FileNameLength = cpu_to_le32(len); 444 445 size[0] = sizeof(struct smb2_file_rename_info); 446 data[0] = &vars->rename_info; 447 448 size[1] = len + 2 /* null */; 449 data[1] = in_iov[i].iov_base; 450 451 if (cfile) { 452 rc = SMB2_set_info_init(tcon, server, 453 &rqst[num_rqst], 454 cfile->fid.persistent_fid, 455 cfile->fid.volatile_fid, 456 current->tgid, FILE_RENAME_INFORMATION, 457 SMB2_O_INFO_FILE, 0, data, size); 458 } else { 459 rc = SMB2_set_info_init(tcon, server, 460 &rqst[num_rqst], 461 COMPOUND_FID, COMPOUND_FID, 462 current->tgid, FILE_RENAME_INFORMATION, 463 SMB2_O_INFO_FILE, 0, data, size); 464 } 465 if (!rc && (!cfile || num_rqst > 1)) { 466 smb2_set_next_command(tcon, &rqst[num_rqst]); 467 smb2_set_related(&rqst[num_rqst]); 468 } else if (rc) { 469 goto finished; 470 } 471 num_rqst++; 472 trace_smb3_rename_enter(xid, ses->Suid, tcon->tid, full_path); 473 break; 474 case SMB2_OP_HARDLINK: 475 rqst[num_rqst].rq_iov = &vars->si_iov[0]; 476 rqst[num_rqst].rq_nvec = 2; 477 478 len = in_iov[i].iov_len; 479 480 vars->link_info.ReplaceIfExists = 0; 481 vars->link_info.RootDirectory = 0; 482 vars->link_info.FileNameLength = cpu_to_le32(len); 483 484 size[0] = sizeof(struct smb2_file_link_info); 485 data[0] = &vars->link_info; 486 487 size[1] = len + 2 /* null */; 488 data[1] = in_iov[i].iov_base; 489 490 rc = SMB2_set_info_init(tcon, server, 491 &rqst[num_rqst], COMPOUND_FID, 492 COMPOUND_FID, current->tgid, 493 FILE_LINK_INFORMATION, 494 SMB2_O_INFO_FILE, 0, data, size); 495 if (rc) 496 goto finished; 497 smb2_set_next_command(tcon, &rqst[num_rqst]); 498 smb2_set_related(&rqst[num_rqst++]); 499 trace_smb3_hardlink_enter(xid, ses->Suid, tcon->tid, full_path); 500 break; 501 case SMB2_OP_SET_REPARSE: 502 rqst[num_rqst].rq_iov = vars->io_iov; 503 rqst[num_rqst].rq_nvec = ARRAY_SIZE(vars->io_iov); 504 505 if (cfile) { 506 rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], 507 cfile->fid.persistent_fid, 508 cfile->fid.volatile_fid, 509 FSCTL_SET_REPARSE_POINT, 510 in_iov[i].iov_base, 511 in_iov[i].iov_len, 0); 512 } else { 513 rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], 514 COMPOUND_FID, COMPOUND_FID, 515 FSCTL_SET_REPARSE_POINT, 516 in_iov[i].iov_base, 517 in_iov[i].iov_len, 0); 518 } 519 if (!rc && (!cfile || num_rqst > 1)) { 520 smb2_set_next_command(tcon, &rqst[num_rqst]); 521 smb2_set_related(&rqst[num_rqst]); 522 } else if (rc) { 523 goto finished; 524 } 525 num_rqst++; 526 trace_smb3_set_reparse_compound_enter(xid, ses->Suid, 527 tcon->tid, full_path); 528 break; 529 case SMB2_OP_GET_REPARSE: 530 rqst[num_rqst].rq_iov = vars->io_iov; 531 rqst[num_rqst].rq_nvec = ARRAY_SIZE(vars->io_iov); 532 533 if (cfile) { 534 rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], 535 cfile->fid.persistent_fid, 536 cfile->fid.volatile_fid, 537 FSCTL_GET_REPARSE_POINT, 538 NULL, 0, CIFSMaxBufSize); 539 } else { 540 rc = SMB2_ioctl_init(tcon, server, &rqst[num_rqst], 541 COMPOUND_FID, COMPOUND_FID, 542 FSCTL_GET_REPARSE_POINT, 543 NULL, 0, CIFSMaxBufSize); 544 } 545 if (!rc && (!cfile || num_rqst > 1)) { 546 smb2_set_next_command(tcon, &rqst[num_rqst]); 547 smb2_set_related(&rqst[num_rqst]); 548 } else if (rc) { 549 goto finished; 550 } 551 num_rqst++; 552 trace_smb3_get_reparse_compound_enter(xid, ses->Suid, 553 tcon->tid, full_path); 554 break; 555 case SMB2_OP_QUERY_WSL_EA: 556 rqst[num_rqst].rq_iov = &vars->ea_iov; 557 rqst[num_rqst].rq_nvec = 1; 558 559 if (cfile) { 560 rc = SMB2_query_info_init(tcon, server, 561 &rqst[num_rqst], 562 cfile->fid.persistent_fid, 563 cfile->fid.volatile_fid, 564 FILE_FULL_EA_INFORMATION, 565 SMB2_O_INFO_FILE, 0, 566 SMB2_WSL_MAX_QUERY_EA_RESP_SIZE, 567 sizeof(wsl_query_eas), 568 (void *)wsl_query_eas); 569 } else { 570 rc = SMB2_query_info_init(tcon, server, 571 &rqst[num_rqst], 572 COMPOUND_FID, 573 COMPOUND_FID, 574 FILE_FULL_EA_INFORMATION, 575 SMB2_O_INFO_FILE, 0, 576 SMB2_WSL_MAX_QUERY_EA_RESP_SIZE, 577 sizeof(wsl_query_eas), 578 (void *)wsl_query_eas); 579 } 580 if (!rc && (!cfile || num_rqst > 1)) { 581 smb2_set_next_command(tcon, &rqst[num_rqst]); 582 smb2_set_related(&rqst[num_rqst]); 583 } else if (rc) { 584 goto finished; 585 } 586 num_rqst++; 587 break; 588 default: 589 cifs_dbg(VFS, "Invalid command\n"); 590 rc = -EINVAL; 591 } 592 } 593 if (rc) 594 goto finished; 595 596 /* We already have a handle so we can skip the close */ 597 if (cfile) 598 goto after_close; 599 /* Close */ 600 flags |= CIFS_CP_CREATE_CLOSE_OP; 601 rqst[num_rqst].rq_iov = &vars->close_iov; 602 rqst[num_rqst].rq_nvec = 1; 603 rc = SMB2_close_init(tcon, server, 604 &rqst[num_rqst], COMPOUND_FID, 605 COMPOUND_FID, false); 606 smb2_set_related(&rqst[num_rqst]); 607 if (rc) 608 goto finished; 609 after_close: 610 num_rqst++; 611 612 if (cfile) { 613 if (retries) 614 for (i = 1; i < num_rqst - 2; i++) 615 smb2_set_replay(server, &rqst[i]); 616 617 rc = compound_send_recv(xid, ses, server, 618 flags, num_rqst - 2, 619 &rqst[1], &resp_buftype[1], 620 &rsp_iov[1]); 621 } else { 622 if (retries) 623 for (i = 0; i < num_rqst; i++) 624 smb2_set_replay(server, &rqst[i]); 625 626 rc = compound_send_recv(xid, ses, server, 627 flags, num_rqst, 628 rqst, resp_buftype, 629 rsp_iov); 630 } 631 632 finished: 633 num_rqst = 0; 634 SMB2_open_free(&rqst[num_rqst++]); 635 if (rc == -EREMCHG) { 636 pr_warn_once("server share %s deleted\n", tcon->tree_name); 637 tcon->need_reconnect = true; 638 } 639 640 for (i = 0; i < num_cmds; i++) { 641 switch (cmds[i]) { 642 case SMB2_OP_QUERY_INFO: 643 idata = in_iov[i].iov_base; 644 if (rc == 0 && cfile && cfile->symlink_target) { 645 idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); 646 if (!idata->symlink_target) 647 rc = -ENOMEM; 648 } 649 if (rc == 0) { 650 qi_rsp = (struct smb2_query_info_rsp *) 651 rsp_iov[i + 1].iov_base; 652 rc = smb2_validate_and_copy_iov( 653 le16_to_cpu(qi_rsp->OutputBufferOffset), 654 le32_to_cpu(qi_rsp->OutputBufferLength), 655 &rsp_iov[i + 1], sizeof(idata->fi), (char *)&idata->fi); 656 } 657 SMB2_query_info_free(&rqst[num_rqst++]); 658 if (rc) 659 trace_smb3_query_info_compound_err(xid, ses->Suid, 660 tcon->tid, rc); 661 else 662 trace_smb3_query_info_compound_done(xid, ses->Suid, 663 tcon->tid); 664 break; 665 case SMB2_OP_POSIX_QUERY_INFO: 666 idata = in_iov[i].iov_base; 667 if (rc == 0 && cfile && cfile->symlink_target) { 668 idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); 669 if (!idata->symlink_target) 670 rc = -ENOMEM; 671 } 672 if (rc == 0) { 673 qi_rsp = (struct smb2_query_info_rsp *) 674 rsp_iov[i + 1].iov_base; 675 rc = smb2_validate_and_copy_iov( 676 le16_to_cpu(qi_rsp->OutputBufferOffset), 677 le32_to_cpu(qi_rsp->OutputBufferLength), 678 &rsp_iov[i + 1], sizeof(idata->posix_fi) /* add SIDs */, 679 (char *)&idata->posix_fi); 680 } 681 if (rc == 0) 682 rc = parse_posix_sids(idata, &rsp_iov[i + 1]); 683 684 SMB2_query_info_free(&rqst[num_rqst++]); 685 if (rc) 686 trace_smb3_posix_query_info_compound_err(xid, ses->Suid, 687 tcon->tid, rc); 688 else 689 trace_smb3_posix_query_info_compound_done(xid, ses->Suid, 690 tcon->tid); 691 break; 692 case SMB2_OP_DELETE: 693 if (rc) 694 trace_smb3_delete_err(xid, ses->Suid, tcon->tid, rc); 695 else { 696 /* 697 * If dentry (hence, inode) is NULL, lease break is going to 698 * take care of degrading leases on handles for deleted files. 699 */ 700 if (inode) 701 cifs_mark_open_handles_for_deleted_file(inode, full_path); 702 trace_smb3_delete_done(xid, ses->Suid, tcon->tid); 703 } 704 break; 705 case SMB2_OP_MKDIR: 706 if (rc) 707 trace_smb3_mkdir_err(xid, ses->Suid, tcon->tid, rc); 708 else 709 trace_smb3_mkdir_done(xid, ses->Suid, tcon->tid); 710 break; 711 case SMB2_OP_HARDLINK: 712 if (rc) 713 trace_smb3_hardlink_err(xid, ses->Suid, tcon->tid, rc); 714 else 715 trace_smb3_hardlink_done(xid, ses->Suid, tcon->tid); 716 SMB2_set_info_free(&rqst[num_rqst++]); 717 break; 718 case SMB2_OP_RENAME: 719 if (rc) 720 trace_smb3_rename_err(xid, ses->Suid, tcon->tid, rc); 721 else 722 trace_smb3_rename_done(xid, ses->Suid, tcon->tid); 723 SMB2_set_info_free(&rqst[num_rqst++]); 724 break; 725 case SMB2_OP_RMDIR: 726 if (rc) 727 trace_smb3_rmdir_err(xid, ses->Suid, tcon->tid, rc); 728 else 729 trace_smb3_rmdir_done(xid, ses->Suid, tcon->tid); 730 SMB2_set_info_free(&rqst[num_rqst++]); 731 break; 732 case SMB2_OP_SET_EOF: 733 if (rc) 734 trace_smb3_set_eof_err(xid, ses->Suid, tcon->tid, rc); 735 else 736 trace_smb3_set_eof_done(xid, ses->Suid, tcon->tid); 737 SMB2_set_info_free(&rqst[num_rqst++]); 738 break; 739 case SMB2_OP_SET_INFO: 740 if (rc) 741 trace_smb3_set_info_compound_err(xid, ses->Suid, 742 tcon->tid, rc); 743 else 744 trace_smb3_set_info_compound_done(xid, ses->Suid, 745 tcon->tid); 746 SMB2_set_info_free(&rqst[num_rqst++]); 747 break; 748 case SMB2_OP_SET_REPARSE: 749 if (rc) { 750 trace_smb3_set_reparse_compound_err(xid, ses->Suid, 751 tcon->tid, rc); 752 } else { 753 trace_smb3_set_reparse_compound_done(xid, ses->Suid, 754 tcon->tid); 755 } 756 SMB2_ioctl_free(&rqst[num_rqst++]); 757 break; 758 case SMB2_OP_GET_REPARSE: 759 if (!rc) { 760 iov = &rsp_iov[i + 1]; 761 idata = in_iov[i].iov_base; 762 idata->reparse.io.iov = *iov; 763 idata->reparse.io.buftype = resp_buftype[i + 1]; 764 rbuf = reparse_buf_ptr(iov); 765 if (IS_ERR(rbuf)) { 766 rc = PTR_ERR(rbuf); 767 trace_smb3_set_reparse_compound_err(xid, ses->Suid, 768 tcon->tid, rc); 769 } else { 770 idata->reparse.tag = le32_to_cpu(rbuf->ReparseTag); 771 trace_smb3_set_reparse_compound_done(xid, ses->Suid, 772 tcon->tid); 773 } 774 memset(iov, 0, sizeof(*iov)); 775 resp_buftype[i + 1] = CIFS_NO_BUFFER; 776 } else { 777 trace_smb3_set_reparse_compound_err(xid, ses->Suid, 778 tcon->tid, rc); 779 } 780 SMB2_ioctl_free(&rqst[num_rqst++]); 781 break; 782 case SMB2_OP_QUERY_WSL_EA: 783 if (!rc) { 784 idata = in_iov[i].iov_base; 785 qi_rsp = rsp_iov[i + 1].iov_base; 786 data[0] = (u8 *)qi_rsp + le16_to_cpu(qi_rsp->OutputBufferOffset); 787 size[0] = le32_to_cpu(qi_rsp->OutputBufferLength); 788 rc = check_wsl_eas(&rsp_iov[i + 1]); 789 if (!rc) { 790 memcpy(idata->wsl.eas, data[0], size[0]); 791 idata->wsl.eas_len = size[0]; 792 } 793 } 794 if (!rc) { 795 trace_smb3_query_wsl_ea_compound_done(xid, ses->Suid, 796 tcon->tid); 797 } else { 798 trace_smb3_query_wsl_ea_compound_err(xid, ses->Suid, 799 tcon->tid, rc); 800 } 801 SMB2_query_info_free(&rqst[num_rqst++]); 802 break; 803 } 804 } 805 SMB2_close_free(&rqst[num_rqst]); 806 807 num_cmds += 2; 808 if (out_iov && out_buftype) { 809 memcpy(out_iov, rsp_iov, num_cmds * sizeof(*out_iov)); 810 memcpy(out_buftype, resp_buftype, 811 num_cmds * sizeof(*out_buftype)); 812 } else { 813 for (i = 0; i < num_cmds; i++) 814 free_rsp_buf(resp_buftype[i], rsp_iov[i].iov_base); 815 } 816 num_cmds -= 2; /* correct num_cmds as there could be a retry */ 817 kfree(vars); 818 819 if (is_replayable_error(rc) && 820 smb2_should_replay(tcon, &retries, &cur_sleep)) 821 goto replay_again; 822 823 if (cfile) 824 cifsFileInfo_put(cfile); 825 826 return rc; 827 } 828 829 static int parse_create_response(struct cifs_open_info_data *data, 830 struct cifs_sb_info *cifs_sb, 831 const char *full_path, 832 const struct kvec *iov) 833 { 834 struct smb2_create_rsp *rsp = iov->iov_base; 835 bool reparse_point = false; 836 u32 tag = 0; 837 int rc = 0; 838 839 switch (rsp->hdr.Status) { 840 case STATUS_IO_REPARSE_TAG_NOT_HANDLED: 841 reparse_point = true; 842 break; 843 case STATUS_STOPPED_ON_SYMLINK: 844 rc = smb2_parse_symlink_response(cifs_sb, iov, 845 full_path, 846 &data->symlink_target); 847 if (rc) 848 return rc; 849 tag = IO_REPARSE_TAG_SYMLINK; 850 reparse_point = true; 851 break; 852 case STATUS_SUCCESS: 853 reparse_point = !!(rsp->Flags & SMB2_CREATE_FLAG_REPARSEPOINT); 854 break; 855 } 856 data->reparse_point = reparse_point; 857 data->reparse.tag = tag; 858 return rc; 859 } 860 861 int smb2_query_path_info(const unsigned int xid, 862 struct cifs_tcon *tcon, 863 struct cifs_sb_info *cifs_sb, 864 const char *full_path, 865 struct cifs_open_info_data *data) 866 { 867 struct cifs_open_parms oparms; 868 __u32 create_options = 0; 869 struct cifsFileInfo *cfile; 870 struct cached_fid *cfid = NULL; 871 struct smb2_hdr *hdr; 872 struct kvec in_iov[3], out_iov[3] = {}; 873 int out_buftype[3] = {}; 874 int cmds[3]; 875 bool islink; 876 int i, num_cmds = 0; 877 int rc, rc2; 878 879 data->adjust_tz = false; 880 data->reparse_point = false; 881 882 /* 883 * BB TODO: Add support for using cached root handle in SMB3.1.1 POSIX. 884 * Create SMB2_query_posix_info worker function to do non-compounded 885 * query when we already have an open file handle for this. For now this 886 * is fast enough (always using the compounded version). 887 */ 888 if (!tcon->posix_extensions) { 889 if (*full_path) { 890 rc = -ENOENT; 891 } else { 892 rc = open_cached_dir(xid, tcon, full_path, 893 cifs_sb, false, &cfid); 894 } 895 /* If it is a root and its handle is cached then use it */ 896 if (!rc) { 897 if (cfid->file_all_info_is_valid) { 898 memcpy(&data->fi, &cfid->file_all_info, 899 sizeof(data->fi)); 900 } else { 901 rc = SMB2_query_info(xid, tcon, 902 cfid->fid.persistent_fid, 903 cfid->fid.volatile_fid, 904 &data->fi); 905 } 906 close_cached_dir(cfid); 907 return rc; 908 } 909 cmds[num_cmds++] = SMB2_OP_QUERY_INFO; 910 } else { 911 cmds[num_cmds++] = SMB2_OP_POSIX_QUERY_INFO; 912 } 913 914 in_iov[0].iov_base = data; 915 in_iov[0].iov_len = sizeof(*data); 916 in_iov[1] = in_iov[0]; 917 in_iov[2] = in_iov[0]; 918 919 cifs_get_readable_path(tcon, full_path, &cfile); 920 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_READ_ATTRIBUTES, 921 FILE_OPEN, create_options, ACL_NO_MODE); 922 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, 923 &oparms, in_iov, cmds, num_cmds, 924 cfile, out_iov, out_buftype, NULL); 925 hdr = out_iov[0].iov_base; 926 /* 927 * If first iov is unset, then SMB session was dropped or we've got a 928 * cached open file (@cfile). 929 */ 930 if (!hdr || out_buftype[0] == CIFS_NO_BUFFER) 931 goto out; 932 933 switch (rc) { 934 case 0: 935 rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]); 936 break; 937 case -EOPNOTSUPP: 938 /* 939 * BB TODO: When support for special files added to Samba 940 * re-verify this path. 941 */ 942 rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]); 943 if (rc || !data->reparse_point) 944 goto out; 945 946 if (!tcon->posix_extensions) 947 cmds[num_cmds++] = SMB2_OP_QUERY_WSL_EA; 948 /* 949 * Skip SMB2_OP_GET_REPARSE if symlink already parsed in create 950 * response. 951 */ 952 if (data->reparse.tag != IO_REPARSE_TAG_SYMLINK) 953 cmds[num_cmds++] = SMB2_OP_GET_REPARSE; 954 955 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 956 FILE_READ_ATTRIBUTES | 957 FILE_READ_EA | SYNCHRONIZE, 958 FILE_OPEN, create_options | 959 OPEN_REPARSE_POINT, ACL_NO_MODE); 960 cifs_get_readable_path(tcon, full_path, &cfile); 961 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, 962 &oparms, in_iov, cmds, num_cmds, 963 cfile, NULL, NULL, NULL); 964 break; 965 case -EREMOTE: 966 break; 967 default: 968 if (hdr->Status != STATUS_OBJECT_NAME_INVALID) 969 break; 970 rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb, 971 full_path, &islink); 972 if (rc2) { 973 rc = rc2; 974 goto out; 975 } 976 if (islink) 977 rc = -EREMOTE; 978 } 979 980 out: 981 for (i = 0; i < ARRAY_SIZE(out_buftype); i++) 982 free_rsp_buf(out_buftype[i], out_iov[i].iov_base); 983 return rc; 984 } 985 986 int 987 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode, 988 struct cifs_tcon *tcon, const char *name, 989 struct cifs_sb_info *cifs_sb) 990 { 991 struct cifs_open_parms oparms; 992 993 oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, 994 FILE_CREATE, CREATE_NOT_FILE, mode); 995 return smb2_compound_op(xid, tcon, cifs_sb, 996 name, &oparms, NULL, 997 &(int){SMB2_OP_MKDIR}, 1, 998 NULL, NULL, NULL, NULL); 999 } 1000 1001 void 1002 smb2_mkdir_setinfo(struct inode *inode, const char *name, 1003 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, 1004 const unsigned int xid) 1005 { 1006 struct cifs_open_parms oparms; 1007 FILE_BASIC_INFO data = {}; 1008 struct cifsInodeInfo *cifs_i; 1009 struct cifsFileInfo *cfile; 1010 struct kvec in_iov; 1011 u32 dosattrs; 1012 int tmprc; 1013 1014 in_iov.iov_base = &data; 1015 in_iov.iov_len = sizeof(data); 1016 cifs_i = CIFS_I(inode); 1017 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; 1018 data.Attributes = cpu_to_le32(dosattrs); 1019 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile); 1020 oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, 1021 FILE_CREATE, CREATE_NOT_FILE, ACL_NO_MODE); 1022 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name, 1023 &oparms, &in_iov, 1024 &(int){SMB2_OP_SET_INFO}, 1, 1025 cfile, NULL, NULL, NULL); 1026 if (tmprc == 0) 1027 cifs_i->cifsAttrs = dosattrs; 1028 } 1029 1030 int 1031 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, 1032 struct cifs_sb_info *cifs_sb) 1033 { 1034 struct cifs_open_parms oparms; 1035 1036 drop_cached_dir_by_name(xid, tcon, name, cifs_sb); 1037 oparms = CIFS_OPARMS(cifs_sb, tcon, name, DELETE, 1038 FILE_OPEN, CREATE_NOT_FILE, ACL_NO_MODE); 1039 return smb2_compound_op(xid, tcon, cifs_sb, 1040 name, &oparms, NULL, 1041 &(int){SMB2_OP_RMDIR}, 1, 1042 NULL, NULL, NULL, NULL); 1043 } 1044 1045 int 1046 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, 1047 struct cifs_sb_info *cifs_sb, struct dentry *dentry) 1048 { 1049 struct cifs_open_parms oparms; 1050 1051 oparms = CIFS_OPARMS(cifs_sb, tcon, name, 1052 DELETE, FILE_OPEN, 1053 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, 1054 ACL_NO_MODE); 1055 int rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, 1056 NULL, &(int){SMB2_OP_DELETE}, 1, 1057 NULL, NULL, NULL, dentry); 1058 if (rc == -EINVAL) { 1059 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1060 rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, 1061 NULL, &(int){SMB2_OP_DELETE}, 1, 1062 NULL, NULL, NULL, NULL); 1063 } 1064 return rc; 1065 } 1066 1067 static int smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, 1068 const char *from_name, const char *to_name, 1069 struct cifs_sb_info *cifs_sb, 1070 __u32 create_options, __u32 access, 1071 int command, struct cifsFileInfo *cfile, 1072 struct dentry *dentry) 1073 { 1074 struct cifs_open_parms oparms; 1075 struct kvec in_iov; 1076 __le16 *smb2_to_name = NULL; 1077 int rc; 1078 1079 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); 1080 if (smb2_to_name == NULL) { 1081 rc = -ENOMEM; 1082 goto smb2_rename_path; 1083 } 1084 in_iov.iov_base = smb2_to_name; 1085 in_iov.iov_len = 2 * UniStrnlen((wchar_t *)smb2_to_name, PATH_MAX); 1086 oparms = CIFS_OPARMS(cifs_sb, tcon, from_name, access, FILE_OPEN, 1087 create_options, ACL_NO_MODE); 1088 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, 1089 &oparms, &in_iov, &command, 1, 1090 cfile, NULL, NULL, dentry); 1091 smb2_rename_path: 1092 kfree(smb2_to_name); 1093 return rc; 1094 } 1095 1096 int smb2_rename_path(const unsigned int xid, 1097 struct cifs_tcon *tcon, 1098 struct dentry *source_dentry, 1099 const char *from_name, const char *to_name, 1100 struct cifs_sb_info *cifs_sb) 1101 { 1102 struct cifsFileInfo *cfile; 1103 __u32 co = file_create_options(source_dentry); 1104 1105 drop_cached_dir_by_name(xid, tcon, from_name, cifs_sb); 1106 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile); 1107 1108 int rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, 1109 co, DELETE, SMB2_OP_RENAME, cfile, source_dentry); 1110 if (rc == -EINVAL) { 1111 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1112 cifs_get_writable_path(tcon, from_name, 1113 FIND_WR_WITH_DELETE, &cfile); 1114 rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, 1115 co, DELETE, SMB2_OP_RENAME, cfile, NULL); 1116 } 1117 return rc; 1118 } 1119 1120 int smb2_create_hardlink(const unsigned int xid, 1121 struct cifs_tcon *tcon, 1122 struct dentry *source_dentry, 1123 const char *from_name, const char *to_name, 1124 struct cifs_sb_info *cifs_sb) 1125 { 1126 __u32 co = file_create_options(source_dentry); 1127 1128 return smb2_set_path_attr(xid, tcon, from_name, to_name, 1129 cifs_sb, co, FILE_READ_ATTRIBUTES, 1130 SMB2_OP_HARDLINK, NULL, NULL); 1131 } 1132 1133 int 1134 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, 1135 const char *full_path, __u64 size, 1136 struct cifs_sb_info *cifs_sb, bool set_alloc, 1137 struct dentry *dentry) 1138 { 1139 struct cifs_open_parms oparms; 1140 struct cifsFileInfo *cfile; 1141 struct kvec in_iov; 1142 __le64 eof = cpu_to_le64(size); 1143 int rc; 1144 1145 in_iov.iov_base = &eof; 1146 in_iov.iov_len = sizeof(eof); 1147 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1148 1149 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_DATA, 1150 FILE_OPEN, 0, ACL_NO_MODE); 1151 rc = smb2_compound_op(xid, tcon, cifs_sb, 1152 full_path, &oparms, &in_iov, 1153 &(int){SMB2_OP_SET_EOF}, 1, 1154 cfile, NULL, NULL, dentry); 1155 if (rc == -EINVAL) { 1156 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1157 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1158 rc = smb2_compound_op(xid, tcon, cifs_sb, 1159 full_path, &oparms, &in_iov, 1160 &(int){SMB2_OP_SET_EOF}, 1, 1161 cfile, NULL, NULL, NULL); 1162 } 1163 return rc; 1164 } 1165 1166 int 1167 smb2_set_file_info(struct inode *inode, const char *full_path, 1168 FILE_BASIC_INFO *buf, const unsigned int xid) 1169 { 1170 struct cifs_open_parms oparms; 1171 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); 1172 struct tcon_link *tlink; 1173 struct cifs_tcon *tcon; 1174 struct cifsFileInfo *cfile; 1175 struct kvec in_iov = { .iov_base = buf, .iov_len = sizeof(*buf), }; 1176 int rc; 1177 1178 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) && 1179 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) && 1180 (buf->Attributes == 0)) 1181 return 0; /* would be a no op, no sense sending this */ 1182 1183 tlink = cifs_sb_tlink(cifs_sb); 1184 if (IS_ERR(tlink)) 1185 return PTR_ERR(tlink); 1186 tcon = tlink_tcon(tlink); 1187 1188 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1189 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_ATTRIBUTES, 1190 FILE_OPEN, 0, ACL_NO_MODE); 1191 rc = smb2_compound_op(xid, tcon, cifs_sb, 1192 full_path, &oparms, &in_iov, 1193 &(int){SMB2_OP_SET_INFO}, 1, 1194 cfile, NULL, NULL, NULL); 1195 cifs_put_tlink(tlink); 1196 return rc; 1197 } 1198 1199 struct inode *smb2_get_reparse_inode(struct cifs_open_info_data *data, 1200 struct super_block *sb, 1201 const unsigned int xid, 1202 struct cifs_tcon *tcon, 1203 const char *full_path, 1204 bool directory, 1205 struct kvec *reparse_iov, 1206 struct kvec *xattr_iov) 1207 { 1208 struct cifs_open_parms oparms; 1209 struct cifs_sb_info *cifs_sb = CIFS_SB(sb); 1210 struct cifsFileInfo *cfile; 1211 struct inode *new = NULL; 1212 int out_buftype[4] = {}; 1213 struct kvec out_iov[4] = {}; 1214 struct kvec in_iov[2]; 1215 int cmds[2]; 1216 int rc; 1217 int i; 1218 1219 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 1220 SYNCHRONIZE | DELETE | 1221 FILE_READ_ATTRIBUTES | 1222 FILE_WRITE_ATTRIBUTES, 1223 FILE_CREATE, 1224 (directory ? CREATE_NOT_FILE : CREATE_NOT_DIR) | OPEN_REPARSE_POINT, 1225 ACL_NO_MODE); 1226 if (xattr_iov) 1227 oparms.ea_cctx = xattr_iov; 1228 1229 cmds[0] = SMB2_OP_SET_REPARSE; 1230 in_iov[0] = *reparse_iov; 1231 in_iov[1].iov_base = data; 1232 in_iov[1].iov_len = sizeof(*data); 1233 1234 if (tcon->posix_extensions) { 1235 cmds[1] = SMB2_OP_POSIX_QUERY_INFO; 1236 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1237 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, 1238 in_iov, cmds, 2, cfile, out_iov, out_buftype, NULL); 1239 if (!rc) { 1240 rc = smb311_posix_get_inode_info(&new, full_path, 1241 data, sb, xid); 1242 } 1243 } else { 1244 cmds[1] = SMB2_OP_QUERY_INFO; 1245 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1246 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, 1247 in_iov, cmds, 2, cfile, out_iov, out_buftype, NULL); 1248 if (!rc) { 1249 rc = cifs_get_inode_info(&new, full_path, 1250 data, sb, xid, NULL); 1251 } 1252 } 1253 1254 1255 /* 1256 * If CREATE was successful but SMB2_OP_SET_REPARSE failed then 1257 * remove the intermediate object created by CREATE. Otherwise 1258 * empty object stay on the server when reparse call failed. 1259 */ 1260 if (rc && 1261 out_iov[0].iov_base != NULL && out_buftype[0] != CIFS_NO_BUFFER && 1262 ((struct smb2_hdr *)out_iov[0].iov_base)->Status == STATUS_SUCCESS && 1263 (out_iov[1].iov_base == NULL || out_buftype[1] == CIFS_NO_BUFFER || 1264 ((struct smb2_hdr *)out_iov[1].iov_base)->Status != STATUS_SUCCESS)) 1265 smb2_unlink(xid, tcon, full_path, cifs_sb, NULL); 1266 1267 for (i = 0; i < ARRAY_SIZE(out_buftype); i++) 1268 free_rsp_buf(out_buftype[i], out_iov[i].iov_base); 1269 1270 return rc ? ERR_PTR(rc) : new; 1271 } 1272 1273 int smb2_query_reparse_point(const unsigned int xid, 1274 struct cifs_tcon *tcon, 1275 struct cifs_sb_info *cifs_sb, 1276 const char *full_path, 1277 u32 *tag, struct kvec *rsp, 1278 int *rsp_buftype) 1279 { 1280 struct cifs_open_parms oparms; 1281 struct cifs_open_info_data data = {}; 1282 struct cifsFileInfo *cfile; 1283 struct kvec in_iov = { .iov_base = &data, .iov_len = sizeof(data), }; 1284 int rc; 1285 1286 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); 1287 1288 cifs_get_readable_path(tcon, full_path, &cfile); 1289 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 1290 FILE_READ_ATTRIBUTES | FILE_READ_EA | SYNCHRONIZE, 1291 FILE_OPEN, OPEN_REPARSE_POINT, ACL_NO_MODE); 1292 rc = smb2_compound_op(xid, tcon, cifs_sb, 1293 full_path, &oparms, &in_iov, 1294 &(int){SMB2_OP_GET_REPARSE}, 1, 1295 cfile, NULL, NULL, NULL); 1296 if (rc) 1297 goto out; 1298 1299 *tag = data.reparse.tag; 1300 *rsp = data.reparse.io.iov; 1301 *rsp_buftype = data.reparse.io.buftype; 1302 memset(&data.reparse.io.iov, 0, sizeof(data.reparse.io.iov)); 1303 data.reparse.io.buftype = CIFS_NO_BUFFER; 1304 out: 1305 cifs_free_open_info(&data); 1306 return rc; 1307 } 1308