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 "smb2status.h" 28 29static 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 47static 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 */ 60static 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 88struct 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 96static 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 103static 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 */ 172static 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 201replay_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 cifs_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 cifs_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 632finished: 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 829static int parse_create_response(struct cifs_open_info_data *data, 830 struct cifs_sb_info *cifs_sb, 831 const struct kvec *iov) 832{ 833 struct smb2_create_rsp *rsp = iov->iov_base; 834 bool reparse_point = false; 835 u32 tag = 0; 836 int rc = 0; 837 838 switch (rsp->hdr.Status) { 839 case STATUS_IO_REPARSE_TAG_NOT_HANDLED: 840 reparse_point = true; 841 break; 842 case STATUS_STOPPED_ON_SYMLINK: 843 rc = smb2_parse_symlink_response(cifs_sb, iov, 844 &data->symlink_target); 845 if (rc) 846 return rc; 847 tag = IO_REPARSE_TAG_SYMLINK; 848 reparse_point = true; 849 break; 850 case STATUS_SUCCESS: 851 reparse_point = !!(rsp->Flags & SMB2_CREATE_FLAG_REPARSEPOINT); 852 break; 853 } 854 data->reparse_point = reparse_point; 855 data->reparse.tag = tag; 856 return rc; 857} 858 859int smb2_query_path_info(const unsigned int xid, 860 struct cifs_tcon *tcon, 861 struct cifs_sb_info *cifs_sb, 862 const char *full_path, 863 struct cifs_open_info_data *data) 864{ 865 struct cifs_open_parms oparms; 866 __u32 create_options = 0; 867 struct cifsFileInfo *cfile; 868 struct cached_fid *cfid = NULL; 869 struct smb2_hdr *hdr; 870 struct kvec in_iov[3], out_iov[3] = {}; 871 int out_buftype[3] = {}; 872 int cmds[3]; 873 bool islink; 874 int i, num_cmds = 0; 875 int rc, rc2; 876 877 data->adjust_tz = false; 878 data->reparse_point = false; 879 880 /* 881 * BB TODO: Add support for using cached root handle in SMB3.1.1 POSIX. 882 * Create SMB2_query_posix_info worker function to do non-compounded 883 * query when we already have an open file handle for this. For now this 884 * is fast enough (always using the compounded version). 885 */ 886 if (!tcon->posix_extensions) { 887 if (*full_path) { 888 rc = -ENOENT; 889 } else { 890 rc = open_cached_dir(xid, tcon, full_path, 891 cifs_sb, false, &cfid); 892 } 893 /* If it is a root and its handle is cached then use it */ 894 if (!rc) { 895 if (cfid->file_all_info_is_valid) { 896 memcpy(&data->fi, &cfid->file_all_info, 897 sizeof(data->fi)); 898 } else { 899 rc = SMB2_query_info(xid, tcon, 900 cfid->fid.persistent_fid, 901 cfid->fid.volatile_fid, 902 &data->fi); 903 } 904 close_cached_dir(cfid); 905 return rc; 906 } 907 cmds[num_cmds++] = SMB2_OP_QUERY_INFO; 908 } else { 909 cmds[num_cmds++] = SMB2_OP_POSIX_QUERY_INFO; 910 } 911 912 in_iov[0].iov_base = data; 913 in_iov[0].iov_len = sizeof(*data); 914 in_iov[1] = in_iov[0]; 915 in_iov[2] = in_iov[0]; 916 917 cifs_get_readable_path(tcon, full_path, &cfile); 918 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_READ_ATTRIBUTES, 919 FILE_OPEN, create_options, ACL_NO_MODE); 920 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, 921 &oparms, in_iov, cmds, num_cmds, 922 cfile, out_iov, out_buftype, NULL); 923 hdr = out_iov[0].iov_base; 924 /* 925 * If first iov is unset, then SMB session was dropped or we've got a 926 * cached open file (@cfile). 927 */ 928 if (!hdr || out_buftype[0] == CIFS_NO_BUFFER) 929 goto out; 930 931 switch (rc) { 932 case 0: 933 case -EOPNOTSUPP: 934 /* 935 * BB TODO: When support for special files added to Samba 936 * re-verify this path. 937 */ 938 rc = parse_create_response(data, cifs_sb, &out_iov[0]); 939 if (rc || !data->reparse_point) 940 goto out; 941 942 cmds[num_cmds++] = SMB2_OP_QUERY_WSL_EA; 943 /* 944 * Skip SMB2_OP_GET_REPARSE if symlink already parsed in create 945 * response. 946 */ 947 if (data->reparse.tag != IO_REPARSE_TAG_SYMLINK) 948 cmds[num_cmds++] = SMB2_OP_GET_REPARSE; 949 950 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 951 FILE_READ_ATTRIBUTES | FILE_READ_EA, 952 FILE_OPEN, create_options | 953 OPEN_REPARSE_POINT, ACL_NO_MODE); 954 cifs_get_readable_path(tcon, full_path, &cfile); 955 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, 956 &oparms, in_iov, cmds, num_cmds, 957 cfile, NULL, NULL, NULL); 958 break; 959 case -EREMOTE: 960 break; 961 default: 962 if (hdr->Status != STATUS_OBJECT_NAME_INVALID) 963 break; 964 rc2 = cifs_inval_name_dfs_link_error(xid, tcon, cifs_sb, 965 full_path, &islink); 966 if (rc2) { 967 rc = rc2; 968 goto out; 969 } 970 if (islink) 971 rc = -EREMOTE; 972 } 973 974out: 975 for (i = 0; i < ARRAY_SIZE(out_buftype); i++) 976 free_rsp_buf(out_buftype[i], out_iov[i].iov_base); 977 return rc; 978} 979 980int 981smb2_mkdir(const unsigned int xid, struct inode *parent_inode, umode_t mode, 982 struct cifs_tcon *tcon, const char *name, 983 struct cifs_sb_info *cifs_sb) 984{ 985 struct cifs_open_parms oparms; 986 987 oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, 988 FILE_CREATE, CREATE_NOT_FILE, mode); 989 return smb2_compound_op(xid, tcon, cifs_sb, 990 name, &oparms, NULL, 991 &(int){SMB2_OP_MKDIR}, 1, 992 NULL, NULL, NULL, NULL); 993} 994 995void 996smb2_mkdir_setinfo(struct inode *inode, const char *name, 997 struct cifs_sb_info *cifs_sb, struct cifs_tcon *tcon, 998 const unsigned int xid) 999{ 1000 struct cifs_open_parms oparms; 1001 FILE_BASIC_INFO data = {}; 1002 struct cifsInodeInfo *cifs_i; 1003 struct cifsFileInfo *cfile; 1004 struct kvec in_iov; 1005 u32 dosattrs; 1006 int tmprc; 1007 1008 in_iov.iov_base = &data; 1009 in_iov.iov_len = sizeof(data); 1010 cifs_i = CIFS_I(inode); 1011 dosattrs = cifs_i->cifsAttrs | ATTR_READONLY; 1012 data.Attributes = cpu_to_le32(dosattrs); 1013 cifs_get_writable_path(tcon, name, FIND_WR_ANY, &cfile); 1014 oparms = CIFS_OPARMS(cifs_sb, tcon, name, FILE_WRITE_ATTRIBUTES, 1015 FILE_CREATE, CREATE_NOT_FILE, ACL_NO_MODE); 1016 tmprc = smb2_compound_op(xid, tcon, cifs_sb, name, 1017 &oparms, &in_iov, 1018 &(int){SMB2_OP_SET_INFO}, 1, 1019 cfile, NULL, NULL, NULL); 1020 if (tmprc == 0) 1021 cifs_i->cifsAttrs = dosattrs; 1022} 1023 1024int 1025smb2_rmdir(const unsigned int xid, struct cifs_tcon *tcon, const char *name, 1026 struct cifs_sb_info *cifs_sb) 1027{ 1028 struct cifs_open_parms oparms; 1029 1030 drop_cached_dir_by_name(xid, tcon, name, cifs_sb); 1031 oparms = CIFS_OPARMS(cifs_sb, tcon, name, DELETE, 1032 FILE_OPEN, CREATE_NOT_FILE, ACL_NO_MODE); 1033 return smb2_compound_op(xid, tcon, cifs_sb, 1034 name, &oparms, NULL, 1035 &(int){SMB2_OP_RMDIR}, 1, 1036 NULL, NULL, NULL, NULL); 1037} 1038 1039int 1040smb2_unlink(const unsigned int xid, struct cifs_tcon *tcon, const char *name, 1041 struct cifs_sb_info *cifs_sb, struct dentry *dentry) 1042{ 1043 struct cifs_open_parms oparms; 1044 1045 oparms = CIFS_OPARMS(cifs_sb, tcon, name, 1046 DELETE, FILE_OPEN, 1047 CREATE_DELETE_ON_CLOSE | OPEN_REPARSE_POINT, 1048 ACL_NO_MODE); 1049 int rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, 1050 NULL, &(int){SMB2_OP_DELETE}, 1, 1051 NULL, NULL, NULL, dentry); 1052 if (rc == -EINVAL) { 1053 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1054 rc = smb2_compound_op(xid, tcon, cifs_sb, name, &oparms, 1055 NULL, &(int){SMB2_OP_DELETE}, 1, 1056 NULL, NULL, NULL, NULL); 1057 } 1058 return rc; 1059} 1060 1061static int smb2_set_path_attr(const unsigned int xid, struct cifs_tcon *tcon, 1062 const char *from_name, const char *to_name, 1063 struct cifs_sb_info *cifs_sb, 1064 __u32 create_options, __u32 access, 1065 int command, struct cifsFileInfo *cfile, 1066 struct dentry *dentry) 1067{ 1068 struct cifs_open_parms oparms; 1069 struct kvec in_iov; 1070 __le16 *smb2_to_name = NULL; 1071 int rc; 1072 1073 smb2_to_name = cifs_convert_path_to_utf16(to_name, cifs_sb); 1074 if (smb2_to_name == NULL) { 1075 rc = -ENOMEM; 1076 goto smb2_rename_path; 1077 } 1078 in_iov.iov_base = smb2_to_name; 1079 in_iov.iov_len = 2 * UniStrnlen((wchar_t *)smb2_to_name, PATH_MAX); 1080 oparms = CIFS_OPARMS(cifs_sb, tcon, from_name, access, FILE_OPEN, 1081 create_options, ACL_NO_MODE); 1082 rc = smb2_compound_op(xid, tcon, cifs_sb, from_name, 1083 &oparms, &in_iov, &command, 1, 1084 cfile, NULL, NULL, dentry); 1085smb2_rename_path: 1086 kfree(smb2_to_name); 1087 return rc; 1088} 1089 1090int smb2_rename_path(const unsigned int xid, 1091 struct cifs_tcon *tcon, 1092 struct dentry *source_dentry, 1093 const char *from_name, const char *to_name, 1094 struct cifs_sb_info *cifs_sb) 1095{ 1096 struct cifsFileInfo *cfile; 1097 __u32 co = file_create_options(source_dentry); 1098 1099 drop_cached_dir_by_name(xid, tcon, from_name, cifs_sb); 1100 cifs_get_writable_path(tcon, from_name, FIND_WR_WITH_DELETE, &cfile); 1101 1102 int rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, 1103 co, DELETE, SMB2_OP_RENAME, cfile, source_dentry); 1104 if (rc == -EINVAL) { 1105 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1106 rc = smb2_set_path_attr(xid, tcon, from_name, to_name, cifs_sb, 1107 co, DELETE, SMB2_OP_RENAME, cfile, NULL); 1108 } 1109 return rc; 1110} 1111 1112int smb2_create_hardlink(const unsigned int xid, 1113 struct cifs_tcon *tcon, 1114 struct dentry *source_dentry, 1115 const char *from_name, const char *to_name, 1116 struct cifs_sb_info *cifs_sb) 1117{ 1118 __u32 co = file_create_options(source_dentry); 1119 1120 return smb2_set_path_attr(xid, tcon, from_name, to_name, 1121 cifs_sb, co, FILE_READ_ATTRIBUTES, 1122 SMB2_OP_HARDLINK, NULL, NULL); 1123} 1124 1125int 1126smb2_set_path_size(const unsigned int xid, struct cifs_tcon *tcon, 1127 const char *full_path, __u64 size, 1128 struct cifs_sb_info *cifs_sb, bool set_alloc, 1129 struct dentry *dentry) 1130{ 1131 struct cifs_open_parms oparms; 1132 struct cifsFileInfo *cfile; 1133 struct kvec in_iov; 1134 __le64 eof = cpu_to_le64(size); 1135 int rc; 1136 1137 in_iov.iov_base = &eof; 1138 in_iov.iov_len = sizeof(eof); 1139 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1140 1141 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_DATA, 1142 FILE_OPEN, 0, ACL_NO_MODE); 1143 rc = smb2_compound_op(xid, tcon, cifs_sb, 1144 full_path, &oparms, &in_iov, 1145 &(int){SMB2_OP_SET_EOF}, 1, 1146 cfile, NULL, NULL, dentry); 1147 if (rc == -EINVAL) { 1148 cifs_dbg(FYI, "invalid lease key, resending request without lease"); 1149 rc = smb2_compound_op(xid, tcon, cifs_sb, 1150 full_path, &oparms, &in_iov, 1151 &(int){SMB2_OP_SET_EOF}, 1, 1152 cfile, NULL, NULL, NULL); 1153 } 1154 return rc; 1155} 1156 1157int 1158smb2_set_file_info(struct inode *inode, const char *full_path, 1159 FILE_BASIC_INFO *buf, const unsigned int xid) 1160{ 1161 struct cifs_open_parms oparms; 1162 struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb); 1163 struct tcon_link *tlink; 1164 struct cifs_tcon *tcon; 1165 struct cifsFileInfo *cfile; 1166 struct kvec in_iov = { .iov_base = buf, .iov_len = sizeof(*buf), }; 1167 int rc; 1168 1169 if ((buf->CreationTime == 0) && (buf->LastAccessTime == 0) && 1170 (buf->LastWriteTime == 0) && (buf->ChangeTime == 0) && 1171 (buf->Attributes == 0)) 1172 return 0; /* would be a no op, no sense sending this */ 1173 1174 tlink = cifs_sb_tlink(cifs_sb); 1175 if (IS_ERR(tlink)) 1176 return PTR_ERR(tlink); 1177 tcon = tlink_tcon(tlink); 1178 1179 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1180 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_WRITE_ATTRIBUTES, 1181 FILE_OPEN, 0, ACL_NO_MODE); 1182 rc = smb2_compound_op(xid, tcon, cifs_sb, 1183 full_path, &oparms, &in_iov, 1184 &(int){SMB2_OP_SET_INFO}, 1, 1185 cfile, NULL, NULL, NULL); 1186 cifs_put_tlink(tlink); 1187 return rc; 1188} 1189 1190struct inode *smb2_get_reparse_inode(struct cifs_open_info_data *data, 1191 struct super_block *sb, 1192 const unsigned int xid, 1193 struct cifs_tcon *tcon, 1194 const char *full_path, 1195 struct kvec *reparse_iov, 1196 struct kvec *xattr_iov) 1197{ 1198 struct cifs_open_parms oparms; 1199 struct cifs_sb_info *cifs_sb = CIFS_SB(sb); 1200 struct cifsFileInfo *cfile; 1201 struct inode *new = NULL; 1202 struct kvec in_iov[2]; 1203 int cmds[2]; 1204 int rc; 1205 1206 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, 1207 SYNCHRONIZE | DELETE | 1208 FILE_READ_ATTRIBUTES | 1209 FILE_WRITE_ATTRIBUTES, 1210 FILE_CREATE, 1211 CREATE_NOT_DIR | OPEN_REPARSE_POINT, 1212 ACL_NO_MODE); 1213 if (xattr_iov) 1214 oparms.ea_cctx = xattr_iov; 1215 1216 cmds[0] = SMB2_OP_SET_REPARSE; 1217 in_iov[0] = *reparse_iov; 1218 in_iov[1].iov_base = data; 1219 in_iov[1].iov_len = sizeof(*data); 1220 1221 if (tcon->posix_extensions) { 1222 cmds[1] = SMB2_OP_POSIX_QUERY_INFO; 1223 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1224 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, 1225 in_iov, cmds, 2, cfile, NULL, NULL, NULL); 1226 if (!rc) { 1227 rc = smb311_posix_get_inode_info(&new, full_path, 1228 data, sb, xid); 1229 } 1230 } else { 1231 cmds[1] = SMB2_OP_QUERY_INFO; 1232 cifs_get_writable_path(tcon, full_path, FIND_WR_ANY, &cfile); 1233 rc = smb2_compound_op(xid, tcon, cifs_sb, full_path, &oparms, 1234 in_iov, cmds, 2, cfile, NULL, NULL, NULL); 1235 if (!rc) { 1236 rc = cifs_get_inode_info(&new, full_path, 1237 data, sb, xid, NULL); 1238 } 1239 } 1240 return rc ? ERR_PTR(rc) : new; 1241} 1242 1243int smb2_query_reparse_point(const unsigned int xid, 1244 struct cifs_tcon *tcon, 1245 struct cifs_sb_info *cifs_sb, 1246 const char *full_path, 1247 u32 *tag, struct kvec *rsp, 1248 int *rsp_buftype) 1249{ 1250 struct cifs_open_parms oparms; 1251 struct cifs_open_info_data data = {}; 1252 struct cifsFileInfo *cfile; 1253 struct kvec in_iov = { .iov_base = &data, .iov_len = sizeof(data), }; 1254 int rc; 1255 1256 cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path); 1257 1258 cifs_get_readable_path(tcon, full_path, &cfile); 1259 oparms = CIFS_OPARMS(cifs_sb, tcon, full_path, FILE_READ_ATTRIBUTES, 1260 FILE_OPEN, OPEN_REPARSE_POINT, ACL_NO_MODE); 1261 rc = smb2_compound_op(xid, tcon, cifs_sb, 1262 full_path, &oparms, &in_iov, 1263 &(int){SMB2_OP_GET_REPARSE}, 1, 1264 cfile, NULL, NULL, NULL); 1265 if (rc) 1266 goto out; 1267 1268 *tag = data.reparse.tag; 1269 *rsp = data.reparse.io.iov; 1270 *rsp_buftype = data.reparse.io.buftype; 1271 memset(&data.reparse.io.iov, 0, sizeof(data.reparse.io.iov)); 1272 data.reparse.io.buftype = CIFS_NO_BUFFER; 1273out: 1274 cifs_free_open_info(&data); 1275 return rc; 1276} 1277