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