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 smb2_query_info_rsp *qi_rsp = NULL; 180 struct smb2_compound_vars *vars = NULL; 181 __u8 oplock = SMB2_OPLOCK_LEVEL_NONE; 182 struct cifs_open_info_data *idata; 183 struct cifs_ses *ses = tcon->ses; 184 struct reparse_data_buffer *rbuf; 185 struct TCP_Server_Info *server; 186 int resp_buftype[MAX_COMPOUND]; 187 int retries = 0, cur_sleep = 1; 188 __u8 delete_pending[8] = {1,}; 189 struct kvec *rsp_iov, *iov; 190 struct inode *inode = NULL; 191 __le16 *utf16_path = NULL; 192 struct smb_rqst *rqst; 193 unsigned int size[2]; 194 struct cifs_fid fid; 195 int num_rqst = 0, i; 196 unsigned int len; 197 int tmp_rc, rc; 198 int flags = 0; 199 void *data[2]; 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, tcon->tid, 302 ses->Suid, 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, tcon->tid, 338 ses->Suid, full_path); 339 break; 340 case SMB2_OP_DELETE: 341 trace_smb3_delete_enter(xid, tcon->tid, ses->Suid, 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, tcon->tid, ses->Suid, 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, tcon->tid, ses->Suid, 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, tcon->tid, ses->Suid, 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, tcon->tid, 433 ses->Suid, 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, tcon->tid, ses->Suid, 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, tcon->tid, ses->Suid, 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, tcon->tid, 527 ses->Suid, 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, tcon->tid, 553 ses->Suid, 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 trace_smb3_query_wsl_ea_compound_enter(xid, tcon->tid, 588 ses->Suid, full_path); 589 break; 590 default: 591 cifs_dbg(VFS, "Invalid command\n"); 592 rc = -EINVAL; 593 } 594 } 595 if (rc) 596 goto finished; 597 598 /* We already have a handle so we can skip the close */ 599 if (cfile) 600 goto after_close; 601 /* Close */ 602 flags |= CIFS_CP_CREATE_CLOSE_OP; 603 rqst[num_rqst].rq_iov = &vars->close_iov; 604 rqst[num_rqst].rq_nvec = 1; 605 rc = SMB2_close_init(tcon, server, 606 &rqst[num_rqst], COMPOUND_FID, 607 COMPOUND_FID, false); 608 smb2_set_related(&rqst[num_rqst]); 609 if (rc) 610 goto finished; 611 after_close: 612 num_rqst++; 613 614 if (cfile) { 615 if (retries) 616 for (i = 1; i < num_rqst - 2; i++) 617 smb2_set_replay(server, &rqst[i]); 618 619 rc = compound_send_recv(xid, ses, server, 620 flags, num_rqst - 2, 621 &rqst[1], &resp_buftype[1], 622 &rsp_iov[1]); 623 } else { 624 if (retries) 625 for (i = 0; i < num_rqst; i++) 626 smb2_set_replay(server, &rqst[i]); 627 628 rc = compound_send_recv(xid, ses, server, 629 flags, num_rqst, 630 rqst, resp_buftype, 631 rsp_iov); 632 } 633 634 finished: 635 num_rqst = 0; 636 SMB2_open_free(&rqst[num_rqst++]); 637 if (rc == -EREMCHG) { 638 pr_warn_once("server share %s deleted\n", tcon->tree_name); 639 tcon->need_reconnect = true; 640 } 641 642 tmp_rc = rc; 643 for (i = 0; i < num_cmds; i++) { 644 char *buf = rsp_iov[i + i].iov_base; 645 646 if (buf && resp_buftype[i + 1] != CIFS_NO_BUFFER) 647 rc = server->ops->map_error(buf, false); 648 else 649 rc = tmp_rc; 650 switch (cmds[i]) { 651 case SMB2_OP_QUERY_INFO: 652 idata = in_iov[i].iov_base; 653 idata->contains_posix_file_info = false; 654 if (rc == 0 && cfile && cfile->symlink_target) { 655 idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); 656 if (!idata->symlink_target) 657 rc = -ENOMEM; 658 } 659 if (rc == 0) { 660 qi_rsp = (struct smb2_query_info_rsp *) 661 rsp_iov[i + 1].iov_base; 662 rc = smb2_validate_and_copy_iov( 663 le16_to_cpu(qi_rsp->OutputBufferOffset), 664 le32_to_cpu(qi_rsp->OutputBufferLength), 665 &rsp_iov[i + 1], sizeof(idata->fi), (char *)&idata->fi); 666 } 667 SMB2_query_info_free(&rqst[num_rqst++]); 668 if (rc) 669 trace_smb3_query_info_compound_err(xid, tcon->tid, 670 ses->Suid, rc); 671 else 672 trace_smb3_query_info_compound_done(xid, tcon->tid, 673 ses->Suid); 674 break; 675 case SMB2_OP_POSIX_QUERY_INFO: 676 idata = in_iov[i].iov_base; 677 idata->contains_posix_file_info = true; 678 if (rc == 0 && cfile && cfile->symlink_target) { 679 idata->symlink_target = kstrdup(cfile->symlink_target, GFP_KERNEL); 680 if (!idata->symlink_target) 681 rc = -ENOMEM; 682 } 683 if (rc == 0) { 684 qi_rsp = (struct smb2_query_info_rsp *) 685 rsp_iov[i + 1].iov_base; 686 rc = smb2_validate_and_copy_iov( 687 le16_to_cpu(qi_rsp->OutputBufferOffset), 688 le32_to_cpu(qi_rsp->OutputBufferLength), 689 &rsp_iov[i + 1], sizeof(idata->posix_fi) /* add SIDs */, 690 (char *)&idata->posix_fi); 691 } 692 if (rc == 0) 693 rc = parse_posix_sids(idata, &rsp_iov[i + 1]); 694 695 SMB2_query_info_free(&rqst[num_rqst++]); 696 if (rc) 697 trace_smb3_posix_query_info_compound_err(xid, tcon->tid, 698 ses->Suid, rc); 699 else 700 trace_smb3_posix_query_info_compound_done(xid, tcon->tid, 701 ses->Suid); 702 break; 703 case SMB2_OP_DELETE: 704 if (rc) 705 trace_smb3_delete_err(xid, tcon->tid, ses->Suid, rc); 706 else { 707 /* 708 * If dentry (hence, inode) is NULL, lease break is going to 709 * take care of degrading leases on handles for deleted files. 710 */ 711 if (inode) 712 cifs_mark_open_handles_for_deleted_file(inode, full_path); 713 trace_smb3_delete_done(xid, tcon->tid, ses->Suid); 714 } 715 break; 716 case SMB2_OP_MKDIR: 717 if (rc) 718 trace_smb3_mkdir_err(xid, tcon->tid, ses->Suid, rc); 719 else 720 trace_smb3_mkdir_done(xid, tcon->tid, ses->Suid); 721 break; 722 case SMB2_OP_HARDLINK: 723 if (rc) 724 trace_smb3_hardlink_err(xid, tcon->tid, ses->Suid, rc); 725 else 726 trace_smb3_hardlink_done(xid, tcon->tid, ses->Suid); 727 SMB2_set_info_free(&rqst[num_rqst++]); 728 break; 729 case SMB2_OP_RENAME: 730 if (rc) 731 trace_smb3_rename_err(xid, tcon->tid, ses->Suid, rc); 732 else 733 trace_smb3_rename_done(xid, tcon->tid, ses->Suid); 734 SMB2_set_info_free(&rqst[num_rqst++]); 735 break; 736 case SMB2_OP_RMDIR: 737 if (rc) 738 trace_smb3_rmdir_err(xid, tcon->tid, ses->Suid, rc); 739 else 740 trace_smb3_rmdir_done(xid, tcon->tid, ses->Suid); 741 SMB2_set_info_free(&rqst[num_rqst++]); 742 break; 743 case SMB2_OP_SET_EOF: 744 if (rc) 745 trace_smb3_set_eof_err(xid, tcon->tid, ses->Suid, rc); 746 else 747 trace_smb3_set_eof_done(xid, tcon->tid, ses->Suid); 748 SMB2_set_info_free(&rqst[num_rqst++]); 749 break; 750 case SMB2_OP_SET_INFO: 751 if (rc) 752 trace_smb3_set_info_compound_err(xid, tcon->tid, 753 ses->Suid, rc); 754 else 755 trace_smb3_set_info_compound_done(xid, tcon->tid, 756 ses->Suid); 757 SMB2_set_info_free(&rqst[num_rqst++]); 758 break; 759 case SMB2_OP_SET_REPARSE: 760 if (rc) { 761 trace_smb3_set_reparse_compound_err(xid, tcon->tid, 762 ses->Suid, rc); 763 } else { 764 trace_smb3_set_reparse_compound_done(xid, tcon->tid, 765 ses->Suid); 766 } 767 SMB2_ioctl_free(&rqst[num_rqst++]); 768 break; 769 case SMB2_OP_GET_REPARSE: 770 if (!rc) { 771 iov = &rsp_iov[i + 1]; 772 idata = in_iov[i].iov_base; 773 idata->reparse.io.iov = *iov; 774 idata->reparse.io.buftype = resp_buftype[i + 1]; 775 idata->contains_posix_file_info = false; /* BB VERIFY */ 776 rbuf = reparse_buf_ptr(iov); 777 if (IS_ERR(rbuf)) { 778 rc = PTR_ERR(rbuf); 779 trace_smb3_get_reparse_compound_err(xid, tcon->tid, 780 ses->Suid, rc); 781 } else { 782 idata->reparse.tag = le32_to_cpu(rbuf->ReparseTag); 783 trace_smb3_get_reparse_compound_done(xid, tcon->tid, 784 ses->Suid); 785 } 786 memset(iov, 0, sizeof(*iov)); 787 resp_buftype[i + 1] = CIFS_NO_BUFFER; 788 } else { 789 trace_smb3_get_reparse_compound_err(xid, tcon->tid, 790 ses->Suid, rc); 791 } 792 SMB2_ioctl_free(&rqst[num_rqst++]); 793 break; 794 case SMB2_OP_QUERY_WSL_EA: 795 if (!rc) { 796 idata = in_iov[i].iov_base; 797 idata->contains_posix_file_info = false; 798 qi_rsp = rsp_iov[i + 1].iov_base; 799 data[0] = (u8 *)qi_rsp + le16_to_cpu(qi_rsp->OutputBufferOffset); 800 size[0] = le32_to_cpu(qi_rsp->OutputBufferLength); 801 rc = check_wsl_eas(&rsp_iov[i + 1]); 802 if (!rc) { 803 memcpy(idata->wsl.eas, data[0], size[0]); 804 idata->wsl.eas_len = size[0]; 805 } 806 } 807 if (!rc) { 808 trace_smb3_query_wsl_ea_compound_done(xid, tcon->tid, 809 ses->Suid); 810 } else { 811 trace_smb3_query_wsl_ea_compound_err(xid, tcon->tid, 812 ses->Suid, rc); 813 } 814 SMB2_query_info_free(&rqst[num_rqst++]); 815 break; 816 } 817 } 818 SMB2_close_free(&rqst[num_rqst]); 819 rc = tmp_rc; 820 821 num_cmds += 2; 822 if (out_iov && out_buftype) { 823 memcpy(out_iov, rsp_iov, num_cmds * sizeof(*out_iov)); 824 memcpy(out_buftype, resp_buftype, 825 num_cmds * sizeof(*out_buftype)); 826 } else { 827 for (i = 0; i < num_cmds; i++) 828 free_rsp_buf(resp_buftype[i], rsp_iov[i].iov_base); 829 } 830 num_cmds -= 2; /* correct num_cmds as there could be a retry */ 831 kfree(vars); 832 833 if (is_replayable_error(rc) && 834 smb2_should_replay(tcon, &retries, &cur_sleep)) 835 goto replay_again; 836 837 if (cfile) 838 cifsFileInfo_put(cfile); 839 840 return rc; 841 } 842 843 static int parse_create_response(struct cifs_open_info_data *data, 844 struct cifs_sb_info *cifs_sb, 845 const char *full_path, 846 const struct kvec *iov) 847 { 848 struct smb2_create_rsp *rsp = iov->iov_base; 849 bool reparse_point = false; 850 u32 tag = 0; 851 int rc = 0; 852 853 switch (rsp->hdr.Status) { 854 case STATUS_IO_REPARSE_TAG_NOT_HANDLED: 855 reparse_point = true; 856 break; 857 case STATUS_STOPPED_ON_SYMLINK: 858 rc = smb2_parse_symlink_response(cifs_sb, iov, 859 full_path, 860 &data->symlink_target); 861 if (rc) 862 return rc; 863 tag = IO_REPARSE_TAG_SYMLINK; 864 reparse_point = true; 865 break; 866 case STATUS_SUCCESS: 867 reparse_point = !!(rsp->Flags & SMB2_CREATE_FLAG_REPARSEPOINT); 868 break; 869 } 870 data->reparse_point = reparse_point; 871 data->reparse.tag = tag; 872 return rc; 873 } 874 875 /* Check only if SMB2_OP_QUERY_WSL_EA command failed in the compound chain */ 876 static bool ea_unsupported(int *cmds, int num_cmds, 877 struct kvec *out_iov, int *out_buftype) 878 { 879 int i; 880 881 if (cmds[num_cmds - 1] != SMB2_OP_QUERY_WSL_EA) 882 return false; 883 884 for (i = 1; i < num_cmds - 1; i++) { 885 struct smb2_hdr *hdr = out_iov[i].iov_base; 886 887 if (out_buftype[i] == CIFS_NO_BUFFER || !hdr || 888 hdr->Status != STATUS_SUCCESS) 889 return false; 890 } 891 return true; 892 } 893 894 static inline void free_rsp_iov(struct kvec *iovs, int *buftype, int count) 895 { 896 int i; 897 898 for (i = 0; i < count; i++) { 899 free_rsp_buf(buftype[i], iovs[i].iov_base); 900 memset(&iovs[i], 0, sizeof(*iovs)); 901 buftype[i] = CIFS_NO_BUFFER; 902 } 903 } 904 905 int smb2_query_path_info(const unsigned int xid, 906 struct cifs_tcon *tcon, 907 struct cifs_sb_info *cifs_sb, 908 const char *full_path, 909 struct cifs_open_info_data *data) 910 { 911 struct kvec in_iov[3], out_iov[5] = {}; 912 struct cached_fid *cfid = NULL; 913 struct cifs_open_parms oparms; 914 struct cifsFileInfo *cfile; 915 __u32 create_options = 0; 916 int out_buftype[5] = {}; 917 struct smb2_hdr *hdr; 918 int num_cmds = 0; 919 int cmds[3]; 920 bool islink; 921 int rc, rc2; 922 923 data->adjust_tz = false; 924 data->reparse_point = false; 925 926 /* 927 * BB TODO: Add support for using cached root handle in SMB3.1.1 POSIX. 928 * Create SMB2_query_posix_info worker function to do non-compounded 929 * query when we already have an open file handle for this. For now this 930 * is fast enough (always using the compounded version). 931 */ 932 if (!tcon->posix_extensions) { 933 if (*full_path) { 934 rc = -ENOENT; 935 } else { 936 rc = open_cached_dir(xid, tcon, full_path, 937 cifs_sb, false, &cfid); 938 } 939 /* If it is a root and its handle is cached then use it */ 940 if (!rc) { 941 if (cfid->file_all_info_is_valid) { 942 memcpy(&data->fi, &cfid->file_all_info, 943 sizeof(data->fi)); 944 } else { 945 rc = SMB2_query_info(xid, tcon, 946 cfid->fid.persistent_fid, 947 cfid->fid.volatile_fid, 948 &data->fi); 949 } 950 close_cached_dir(cfid); 951 return rc; 952 } 953 cmds[num_cmds++] = SMB2_OP_QUERY_INFO; 954 } else { 955 cmds[num_cmds++] = SMB2_OP_POSIX_QUERY_INFO; 956 } 957 958 in_iov[0].iov_base = data; 959 in_iov[0].iov_len = sizeof(*data); 960 in_iov[1] = in_iov[0]; 961 in_iov[2] = in_iov[0]; 962 963 cifs_get_readable_path(tcon, full_path, &cfile); 964 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_READ_ATTRIBUTES, 965 FILE_OPEN, create_options, ACL_NO_MODE); 966 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, 967 &oparms, in_iov, cmds, num_cmds, 968 cfile, out_iov, out_buftype, NULL); 969 hdr = out_iov[0].iov_base; 970 /* 971 * If first iov is unset, then SMB session was dropped or we've got a 972 * cached open file (@cfile). 973 */ 974 if (!hdr || out_buftype[0] == CIFS_NO_BUFFER) 975 goto out; 976 977 switch (rc) { 978 case 0: 979 rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]); 980 break; 981 case -EOPNOTSUPP: 982 /* 983 * BB TODO: When support for special files added to Samba 984 * re-verify this path. 985 */ 986 rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]); 987 if (rc || !data->reparse_point) 988 goto out; 989 990 /* 991 * Skip SMB2_OP_GET_REPARSE if symlink already parsed in create 992 * response. 993 */ 994 if (data->reparse.tag != IO_REPARSE_TAG_SYMLINK) 995 cmds[num_cmds++] = SMB2_OP_GET_REPARSE; 996 if (!tcon->posix_extensions) 997 cmds[num_cmds++] = SMB2_OP_QUERY_WSL_EA; 998 999 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 1000 FILE_READ_ATTRIBUTES | 1001 FILE_READ_EA | SYNCHRONIZE, 1002 FILE_OPEN, create_options | 1003 OPEN_REPARSE_POINT, ACL_NO_MODE); 1004 cifs_get_readable_path(tcon, full_path, &cfile); 1005 free_rsp_iov(out_iov, out_buftype, ARRAY_SIZE(out_iov)); 1006 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, 1007 &oparms, in_iov, cmds, num_cmds, 1008 cfile, out_iov, out_buftype, NULL); 1009 if (rc && ea_unsupported(cmds, num_cmds, 1010 out_iov, out_buftype)) { 1011 if (data->reparse.tag != IO_REPARSE_TAG_LX_BLK && 1012 data->reparse.tag != IO_REPARSE_TAG_LX_CHR) 1013 rc = 0; 1014 else 1015 rc = -EOPNOTSUPP; 1016 } 1017 1018 if (data->reparse.tag == IO_REPARSE_TAG_SYMLINK && !rc) { 1019 bool directory = le32_to_cpu(data->fi.Attributes) & ATTR_DIRECTORY; 1020 rc = smb2_fix_symlink_target_type(&data->symlink_target, directory, cifs_sb); 1021 } 1022 break; 1023 case -EREMOTE: 1024 break; 1025 default: 1026 if (hdr->Status != STATUS_OBJECT_NAME_INVALID) 1027 break; 1028 rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb, 1029 full_path, &islink); 1030 if (rc2) { 1031 rc = rc2; 1032 goto out; 1033 } 1034 if (islink) 1035 rc = -EREMOTE; 1036 } 1037 1038 out: 1039 free_rsp_iov(out_iov, out_buftype, ARRAY_SIZE(out_iov)); 1040 return rc; 1041 } 1042 1043 int 1044 smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode, 1045 struct cifs_tcon *tcon, const char *name, 1046 struct cifs_sb_info *cifs_sb) 1047 { 1048 struct cifs_open_parms oparms; 1049 1050 oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, 1051 FILE_CREATE, CREATE_NOT_FILE, mode); 1052 return smb2_compound_op(xid, tcon, cifs_sb, 1053 name, &oparms, NULL, 1054 &(int){SMB2_OP_MKDIR}, 1, 1055 NULL, NULL, NULL, NULL); 1056 } 1057 1058 void 1059 smb2_mkdir_setinfo(struct inode *inode, const char *name, 1060 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, 1061 const unsigned int xid) 1062 { 1063 struct cifs_open_parms oparms; 1064 FILE_BASIC_INFO data = {}; 1065 struct cifsInodeInfo *cifs_i; 1066 struct cifsFileInfo *cfile; 1067 struct kvec in_iov; 1068 u32 dosattrs; 1069 int tmprc; 1070 1071 in_iov.iov_base = &data; 1072 in_iov.iov_len = sizeof(data); 1073 cifs_i = CIFS_I(inode); 1074 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; 1075 data.Attributes = cpu_to_le32(dosattrs); 1076 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile); 1077 oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, 1078 FILE_CREATE, CREATE_NOT_FILE, ACL_NO_MODE); 1079 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name, 1080 &oparms, &in_iov, 1081 &(int){SMB2_OP_SET_INFO}, 1, 1082 cfile, NULL, NULL, NULL); 1083 if (tmprc == 0) 1084 cifs_i->cifsAttrs = dosattrs; 1085 } 1086 1087 int 1088 smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, 1089 struct cifs_sb_info *cifs_sb) 1090 { 1091 struct cifs_open_parms oparms; 1092 1093 drop_cached_dir_by_name(xid, tcon, name, cifs_sb); 1094 oparms = CIFS_OPARMS(cifs_sb, tcon, name, DELETE, 1095 FILE_OPEN, CREATE_NOT_FILE, ACL_NO_MODE); 1096 return smb2_compound_op(xid, tcon, cifs_sb, 1097 name, &oparms, NULL, 1098 &(int){SMB2_OP_RMDIR}, 1, 1099 NULL, NULL, NULL, NULL); 1100 } 1101 1102 int 1103 smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, 1104 struct cifs_sb_info *cifs_sb, struct dentry *dentry) 1105 { 1106 struct cifs_open_parms oparms; 1107 1108 oparms = CIFS_OPARMS(cifs_sb, tcon, name, 1109 DELETE, FILE_OPEN, 1110 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, 1111 ACL_NO_MODE); 1112 int rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, 1113 NULL, &(int){SMB2_OP_DELETE}, 1, 1114 NULL, NULL, NULL, dentry); 1115 if (rc == -EINVAL) { 1116 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1117 rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, 1118 NULL, &(int){SMB2_OP_DELETE}, 1, 1119 NULL, NULL, NULL, NULL); 1120 } 1121 return rc; 1122 } 1123 1124 static int smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, 1125 const char *from_name, const char *to_name, 1126 struct cifs_sb_info *cifs_sb, 1127 __u32 create_options, __u32 access, 1128 int command, struct cifsFileInfo *cfile, 1129 struct dentry *dentry) 1130 { 1131 struct cifs_open_parms oparms; 1132 struct kvec in_iov; 1133 __le16 *smb2_to_name = NULL; 1134 int rc; 1135 1136 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); 1137 if (smb2_to_name == NULL) { 1138 rc = -ENOMEM; 1139 goto smb2_rename_path; 1140 } 1141 in_iov.iov_base = smb2_to_name; 1142 in_iov.iov_len = 2 * UniStrnlen((wchar_t *)smb2_to_name, PATH_MAX); 1143 oparms = CIFS_OPARMS(cifs_sb, tcon, from_name, access, FILE_OPEN, 1144 create_options, ACL_NO_MODE); 1145 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, 1146 &oparms, &in_iov, &command, 1, 1147 cfile, NULL, NULL, dentry); 1148 smb2_rename_path: 1149 kfree(smb2_to_name); 1150 return rc; 1151 } 1152 1153 int smb2_rename_path(const unsigned int xid, 1154 struct cifs_tcon *tcon, 1155 struct dentry *source_dentry, 1156 const char *from_name, const char *to_name, 1157 struct cifs_sb_info *cifs_sb) 1158 { 1159 struct cifsFileInfo *cfile; 1160 __u32 co = file_create_options(source_dentry); 1161 1162 drop_cached_dir_by_name(xid, tcon, from_name, cifs_sb); 1163 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile); 1164 1165 int rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, 1166 co, DELETE, SMB2_OP_RENAME, cfile, source_dentry); 1167 if (rc == -EINVAL) { 1168 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1169 cifs_get_writable_path(tcon, from_name, 1170 FIND_WR_WITH_DELETE, &cfile); 1171 rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, 1172 co, DELETE, SMB2_OP_RENAME, cfile, NULL); 1173 } 1174 return rc; 1175 } 1176 1177 int smb2_create_hardlink(const unsigned int xid, 1178 struct cifs_tcon *tcon, 1179 struct dentry *source_dentry, 1180 const char *from_name, const char *to_name, 1181 struct cifs_sb_info *cifs_sb) 1182 { 1183 __u32 co = file_create_options(source_dentry); 1184 1185 return smb2_set_path_attr(xid, tcon, from_name, to_name, 1186 cifs_sb, co, FILE_READ_ATTRIBUTES, 1187 SMB2_OP_HARDLINK, NULL, NULL); 1188 } 1189 1190 int 1191 smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, 1192 const char *full_path, __u64 size, 1193 struct cifs_sb_info *cifs_sb, bool set_alloc, 1194 struct dentry *dentry) 1195 { 1196 struct cifs_open_parms oparms; 1197 struct cifsFileInfo *cfile; 1198 struct kvec in_iov; 1199 __le64 eof = cpu_to_le64(size); 1200 int rc; 1201 1202 in_iov.iov_base = &eof; 1203 in_iov.iov_len = sizeof(eof); 1204 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1205 1206 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_DATA, 1207 FILE_OPEN, 0, ACL_NO_MODE); 1208 rc = smb2_compound_op(xid, tcon, cifs_sb, 1209 full_path, &oparms, &in_iov, 1210 &(int){SMB2_OP_SET_EOF}, 1, 1211 cfile, NULL, NULL, dentry); 1212 if (rc == -EINVAL) { 1213 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1214 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1215 rc = smb2_compound_op(xid, tcon, cifs_sb, 1216 full_path, &oparms, &in_iov, 1217 &(int){SMB2_OP_SET_EOF}, 1, 1218 cfile, NULL, NULL, NULL); 1219 } 1220 return rc; 1221 } 1222 1223 int 1224 smb2_set_file_info(struct inode *inode, const char *full_path, 1225 FILE_BASIC_INFO *buf, const unsigned int xid) 1226 { 1227 struct cifs_open_parms oparms; 1228 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); 1229 struct tcon_link *tlink; 1230 struct cifs_tcon *tcon; 1231 struct cifsFileInfo *cfile; 1232 struct kvec in_iov = { .iov_base = buf, .iov_len = sizeof(*buf), }; 1233 int rc; 1234 1235 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) && 1236 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) && 1237 (buf->Attributes == 0)) 1238 return 0; /* would be a no op, no sense sending this */ 1239 1240 tlink = cifs_sb_tlink(cifs_sb); 1241 if (IS_ERR(tlink)) 1242 return PTR_ERR(tlink); 1243 tcon = tlink_tcon(tlink); 1244 1245 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1246 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_ATTRIBUTES, 1247 FILE_OPEN, 0, ACL_NO_MODE); 1248 rc = smb2_compound_op(xid, tcon, cifs_sb, 1249 full_path, &oparms, &in_iov, 1250 &(int){SMB2_OP_SET_INFO}, 1, 1251 cfile, NULL, NULL, NULL); 1252 cifs_put_tlink(tlink); 1253 return rc; 1254 } 1255 1256 struct inode *smb2_get_reparse_inode(struct cifs_open_info_data *data, 1257 struct super_block *sb, 1258 const unsigned int xid, 1259 struct cifs_tcon *tcon, 1260 const char *full_path, 1261 bool directory, 1262 struct kvec *reparse_iov, 1263 struct kvec *xattr_iov) 1264 { 1265 struct cifs_open_parms oparms; 1266 struct cifs_sb_info *cifs_sb = CIFS_SB(sb); 1267 struct cifsFileInfo *cfile; 1268 struct inode *new = NULL; 1269 int out_buftype[4] = {}; 1270 struct kvec out_iov[4] = {}; 1271 struct kvec in_iov[2]; 1272 int cmds[2]; 1273 int rc; 1274 int i; 1275 1276 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 1277 SYNCHRONIZE | DELETE | 1278 FILE_READ_ATTRIBUTES | 1279 FILE_WRITE_ATTRIBUTES, 1280 FILE_CREATE, 1281 (directory ? CREATE_NOT_FILE : CREATE_NOT_DIR) | OPEN_REPARSE_POINT, 1282 ACL_NO_MODE); 1283 if (xattr_iov) 1284 oparms.ea_cctx = xattr_iov; 1285 1286 cmds[0] = SMB2_OP_SET_REPARSE; 1287 in_iov[0] = *reparse_iov; 1288 in_iov[1].iov_base = data; 1289 in_iov[1].iov_len = sizeof(*data); 1290 1291 if (tcon->posix_extensions) { 1292 cmds[1] = SMB2_OP_POSIX_QUERY_INFO; 1293 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1294 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, 1295 in_iov, cmds, 2, cfile, out_iov, out_buftype, NULL); 1296 if (!rc) { 1297 rc = smb311_posix_get_inode_info(&new, full_path, 1298 data, sb, xid); 1299 } 1300 } else { 1301 cmds[1] = SMB2_OP_QUERY_INFO; 1302 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1303 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, 1304 in_iov, cmds, 2, cfile, out_iov, out_buftype, NULL); 1305 if (!rc) { 1306 rc = cifs_get_inode_info(&new, full_path, 1307 data, sb, xid, NULL); 1308 } 1309 } 1310 1311 1312 /* 1313 * If CREATE was successful but SMB2_OP_SET_REPARSE failed then 1314 * remove the intermediate object created by CREATE. Otherwise 1315 * empty object stay on the server when reparse call failed. 1316 */ 1317 if (rc && 1318 out_iov[0].iov_base != NULL && out_buftype[0] != CIFS_NO_BUFFER && 1319 ((struct smb2_hdr *)out_iov[0].iov_base)->Status == STATUS_SUCCESS && 1320 (out_iov[1].iov_base == NULL || out_buftype[1] == CIFS_NO_BUFFER || 1321 ((struct smb2_hdr *)out_iov[1].iov_base)->Status != STATUS_SUCCESS)) 1322 smb2_unlink(xid, tcon, full_path, cifs_sb, NULL); 1323 1324 for (i = 0; i < ARRAY_SIZE(out_buftype); i++) 1325 free_rsp_buf(out_buftype[i], out_iov[i].iov_base); 1326 1327 return rc ? ERR_PTR(rc) : new; 1328 } 1329 1330 int smb2_query_reparse_point(const unsigned int xid, 1331 struct cifs_tcon *tcon, 1332 struct cifs_sb_info *cifs_sb, 1333 const char *full_path, 1334 u32 *tag, struct kvec *rsp, 1335 int *rsp_buftype) 1336 { 1337 struct cifs_open_parms oparms; 1338 struct cifs_open_info_data data = {}; 1339 struct cifsFileInfo *cfile; 1340 struct kvec in_iov = { .iov_base = &data, .iov_len = sizeof(data), }; 1341 int rc; 1342 1343 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); 1344 1345 cifs_get_readable_path(tcon, full_path, &cfile); 1346 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 1347 FILE_READ_ATTRIBUTES | FILE_READ_EA | SYNCHRONIZE, 1348 FILE_OPEN, OPEN_REPARSE_POINT, ACL_NO_MODE); 1349 rc = smb2_compound_op(xid, tcon, cifs_sb, 1350 full_path, &oparms, &in_iov, 1351 &(int){SMB2_OP_GET_REPARSE}, 1, 1352 cfile, NULL, NULL, NULL); 1353 if (rc) 1354 goto out; 1355 1356 *tag = data.reparse.tag; 1357 *rsp = data.reparse.io.iov; 1358 *rsp_buftype = data.reparse.io.buftype; 1359 memset(&data.reparse.io.iov, 0, sizeof(data.reparse.io.iov)); 1360 data.reparse.io.buftype = CIFS_NO_BUFFER; 1361 out: 1362 cifs_free_open_info(&data); 1363 return rc; 1364 } 1365