1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 #pragma ident "%Z%%M% %I% %E% SMI" 27 28 #include <sys/types.h> 29 #include <sys/stat.h> 30 #include <sys/uio.h> 31 #include <sys/statvfs.h> 32 #include <sys/vnode.h> 33 #include <sys/thread.h> 34 #include <sys/pathname.h> 35 #include <sys/cred.h> 36 #include <sys/extdirent.h> 37 #include <sys/nbmlock.h> 38 #include <sys/share.h> 39 #include <sys/fcntl.h> 40 #include <nfs/lm.h> 41 42 #include <smbsrv/smb_vops.h> 43 #include <smbsrv/string.h> 44 45 #include <smbsrv/smbtrans.h> 46 #include <smbsrv/smb_fsops.h> 47 #include <smbsrv/smb_kproto.h> 48 #include <smbsrv/smb_incl.h> 49 50 void 51 smb_vop_setup_xvattr(smb_attr_t *smb_attr, xvattr_t *xvattr); 52 53 static int 54 smb_vop_readdir_readpage(vnode_t *, void *, uint32_t, int *, cred_t *, int); 55 56 static int 57 smb_vop_readdir_entry(vnode_t *, uint32_t *, char *, int *, 58 ino64_t *, vnode_t **, char *, int, cred_t *, char *, int); 59 60 static int 61 smb_vop_getdents_entries(smb_node_t *, uint32_t *, int32_t *, char *, uint32_t, 62 smb_request_t *, cred_t *, char *, int *, int, char *); 63 64 extern int 65 smb_gather_dents_info(char *args, ino_t fileid, int namelen, 66 char *name, uint32_t cookie, int32_t *countp, 67 smb_attr_t *attr, struct smb_node *snode, 68 char *shortname, char *name83); 69 70 static void 71 smb_sa_to_va_mask(uint_t sa_mask, uint_t *va_maskp); 72 73 static 74 callb_cpr_t *smb_lock_frlock_callback(flk_cb_when_t, void *); 75 76 extern sysid_t lm_alloc_sysidt(); 77 78 #define SMB_AT_MAX 16 79 static uint_t smb_attrmap[SMB_AT_MAX] = { 80 0, 81 AT_TYPE, 82 AT_MODE, 83 AT_UID, 84 AT_GID, 85 AT_FSID, 86 AT_NODEID, 87 AT_NLINK, 88 AT_SIZE, 89 AT_ATIME, 90 AT_MTIME, 91 AT_CTIME, 92 AT_RDEV, 93 AT_BLKSIZE, 94 AT_NBLOCKS, 95 AT_SEQ 96 }; 97 98 static boolean_t smb_vop_initialized = B_FALSE; 99 caller_context_t smb_ct; 100 101 /* 102 * smb_vop_init 103 * 104 * This function is not multi-thread safe. The caller must make sure only one 105 * thread makes the call. 106 */ 107 int 108 smb_vop_init(void) 109 { 110 if (smb_vop_initialized) 111 return (0); 112 /* 113 * The caller_context will be used primarily for range locking. 114 * Since the CIFS server is mapping its locks to POSIX locks, 115 * only one pid is used for operations originating from the 116 * CIFS server (to represent CIFS in the VOP_FRLOCK routines). 117 */ 118 smb_ct.cc_sysid = lm_alloc_sysidt(); 119 if (smb_ct.cc_sysid == LM_NOSYSID) 120 return (ENOMEM); 121 122 smb_ct.cc_caller_id = fs_new_caller_id(); 123 smb_ct.cc_pid = IGN_PID; 124 smb_ct.cc_flags = 0; 125 126 smb_vop_initialized = B_TRUE; 127 return (0); 128 } 129 130 /* 131 * smb_vop_fini 132 * 133 * This function is not multi-thread safe. The caller must make sure only one 134 * thread makes the call. 135 */ 136 void 137 smb_vop_fini(void) 138 { 139 if (!smb_vop_initialized) 140 return; 141 142 lm_free_sysidt(smb_ct.cc_sysid); 143 smb_ct.cc_pid = IGN_PID; 144 smb_ct.cc_sysid = LM_NOSYSID; 145 smb_vop_initialized = B_FALSE; 146 } 147 148 /* 149 * The smb_ct will be used primarily for range locking. 150 * Since the CIFS server is mapping its locks to POSIX locks, 151 * only one pid is used for operations originating from the 152 * CIFS server (to represent CIFS in the VOP_FRLOCK routines). 153 */ 154 155 int 156 smb_vop_open(vnode_t **vpp, int mode, cred_t *cred) 157 { 158 return (VOP_OPEN(vpp, mode, cred, &smb_ct)); 159 } 160 161 int 162 smb_vop_close(vnode_t *vp, int mode, cred_t *cred) 163 { 164 return (VOP_CLOSE(vp, mode, 1, (offset_t)0, cred, &smb_ct)); 165 } 166 167 int 168 smb_vop_other_opens(vnode_t *vp, int mode) 169 { 170 return (((mode & FWRITE) && vn_has_other_opens(vp, V_WRITE)) || 171 (((mode & FWRITE) == 0) && vn_is_opened(vp, V_WRITE)) || 172 ((mode & FREAD) && vn_has_other_opens(vp, V_READ)) || 173 (((mode & FREAD) == 0) && vn_is_opened(vp, V_READ)) || 174 vn_is_mapped(vp, V_RDORWR)); 175 } 176 177 /* 178 * The smb_vop_* functions have minimal knowledge of CIFS semantics and 179 * serve as an interface to the VFS layer. 180 * 181 * Only smb_fsop_* layer functions should call smb_vop_* layer functions. 182 * (Higher-level CIFS service code should never skip the smb_fsop_* layer 183 * to call smb_vop_* layer functions directly.) 184 */ 185 186 /* 187 * XXX - Extended attributes support in the file system assumed. 188 * This is needed for full NT Streams functionality. 189 */ 190 191 int 192 smb_vop_read(vnode_t *vp, uio_t *uiop, cred_t *cr) 193 { 194 int error; 195 196 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); 197 error = VOP_READ(vp, uiop, 0, cr, &smb_ct); 198 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); 199 return (error); 200 } 201 202 int 203 smb_vop_write(vnode_t *vp, uio_t *uiop, uint32_t *flag, uint32_t *lcount, 204 cred_t *cr) 205 { 206 int error; 207 int ioflag = 0; 208 209 *lcount = uiop->uio_resid; 210 211 if (*flag == FSSTAB_FILE_SYNC) 212 ioflag = FSYNC; 213 214 uiop->uio_llimit = MAXOFFSET_T; 215 216 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 217 error = VOP_WRITE(vp, uiop, ioflag, cr, &smb_ct); 218 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 219 220 *lcount -= uiop->uio_resid; 221 222 return (error); 223 } 224 225 /* 226 * smb_vop_getattr() 227 * 228 * smb_fsop_getattr()/smb_vop_getattr() should always be called from the CIFS 229 * service (instead of calling VOP_GETATTR directly) to retrieve attributes 230 * due to special processing needed for streams files. 231 * 232 * All attributes are retrieved. 233 * 234 * A named stream's attributes (as far as CIFS is concerned) are those of the 235 * unnamed (i.e. data) stream (minus the size attribute), and the size of the 236 * named stream. Though the file system may store attributes other than size 237 * with the named stream, these should not be used by CIFS for any purpose. 238 * 239 * When vp denotes a named stream, then unnamed_vp should be passed in (denoting 240 * the corresponding unnamed stream). 241 */ 242 243 int 244 smb_vop_getattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *ret_attr, 245 int flags, cred_t *cr) 246 { 247 int error; 248 vnode_t *use_vp; 249 smb_attr_t tmp_attr; 250 xvattr_t tmp_xvattr; 251 xoptattr_t *xoap = NULL; 252 253 if (unnamed_vp) 254 use_vp = unnamed_vp; 255 else 256 use_vp = vp; 257 258 if (vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) { 259 xva_init(&tmp_xvattr); 260 xoap = xva_getxoptattr(&tmp_xvattr); 261 262 ASSERT(xoap); 263 264 smb_sa_to_va_mask(ret_attr->sa_mask, 265 &tmp_xvattr.xva_vattr.va_mask); 266 267 XVA_SET_REQ(&tmp_xvattr, XAT_READONLY); 268 XVA_SET_REQ(&tmp_xvattr, XAT_HIDDEN); 269 XVA_SET_REQ(&tmp_xvattr, XAT_SYSTEM); 270 XVA_SET_REQ(&tmp_xvattr, XAT_ARCHIVE); 271 XVA_SET_REQ(&tmp_xvattr, XAT_CREATETIME); 272 273 if ((error = VOP_GETATTR(use_vp, (vattr_t *)&tmp_xvattr, flags, 274 cr, &smb_ct)) != 0) 275 return (error); 276 277 ret_attr->sa_vattr = tmp_xvattr.xva_vattr; 278 279 /* 280 * Copy special attributes to ret_attr parameter 281 */ 282 283 ret_attr->sa_dosattr = 0; 284 285 ASSERT(tmp_xvattr.xva_vattr.va_mask & AT_XVATTR); 286 287 xoap = xva_getxoptattr(&tmp_xvattr); 288 ASSERT(xoap); 289 290 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_READONLY)) { 291 if (xoap->xoa_readonly) 292 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_READONLY; 293 } 294 295 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_HIDDEN)) { 296 if (xoap->xoa_hidden) 297 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_HIDDEN; 298 } 299 300 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_SYSTEM)) { 301 if (xoap->xoa_system) 302 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_SYSTEM; 303 } 304 305 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_ARCHIVE)) { 306 if (xoap->xoa_archive) 307 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_ARCHIVE; 308 } 309 310 ret_attr->sa_crtime = xoap->xoa_createtime; 311 312 if (unnamed_vp && (ret_attr->sa_mask & SMB_AT_SIZE)) { 313 /* 314 * Retrieve stream size attribute into temporary 315 * structure, in case the underlying file system 316 * returns attributes other than the size (we do not 317 * want to have ret_attr's other fields get 318 * overwritten). 319 * 320 * Note that vp is used here, and not use_vp. 321 * Also, only AT_SIZE is needed. 322 */ 323 324 tmp_xvattr.xva_vattr.va_mask = AT_SIZE; 325 326 if ((error = VOP_GETATTR(vp, (vattr_t *)&tmp_xvattr, 327 flags, cr, &smb_ct)) != 0) 328 return (error); 329 330 ret_attr->sa_vattr.va_size = 331 tmp_xvattr.xva_vattr.va_size; 332 333 } 334 335 if (ret_attr->sa_vattr.va_type == VDIR) { 336 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_DIRECTORY; 337 } 338 339 return (error); 340 } 341 342 /* 343 * Support for file systems without VFSFT_XVATTR 344 */ 345 346 smb_sa_to_va_mask(ret_attr->sa_mask, 347 &ret_attr->sa_vattr.va_mask); 348 349 error = VOP_GETATTR(use_vp, &ret_attr->sa_vattr, flags, cr, &smb_ct); 350 351 if (error != 0) 352 return (error); 353 354 /* 355 * "Fake" DOS attributes and create time, filesystem doesn't support 356 * them. 357 */ 358 359 ret_attr->sa_dosattr = 0; 360 ret_attr->sa_crtime = ret_attr->sa_vattr.va_ctime; 361 362 if (unnamed_vp && (ret_attr->sa_mask & SMB_AT_SIZE)) { 363 /* 364 * Retrieve stream size attribute into temporary structure, 365 * in case the underlying file system returns attributes 366 * other than the size (we do not want to have ret_attr's 367 * other fields get overwritten). 368 * 369 * Note that vp is used here, and not use_vp. 370 * Also, only AT_SIZE is needed. 371 */ 372 373 tmp_attr.sa_vattr.va_mask = AT_SIZE; 374 error = VOP_GETATTR(vp, &tmp_attr.sa_vattr, flags, cr, &smb_ct); 375 376 if (error != 0) 377 return (error); 378 379 380 ret_attr->sa_vattr.va_size = tmp_attr.sa_vattr.va_size; 381 } 382 383 if (ret_attr->sa_vattr.va_type == VDIR) { 384 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_DIRECTORY; 385 } 386 387 return (error); 388 } 389 390 /* 391 * smb_vop_setattr() 392 * 393 * smb_fsop_setattr()/smb_vop_setattr() should always be used instead of 394 * VOP_SETATTR() when calling from the CIFS service, due to special processing 395 * for streams files. 396 * 397 * Streams have a size but otherwise do not have separate attributes from 398 * the (unnamed stream) file, i.e., the security and ownership of the file 399 * applies to the stream. In contrast, extended attribute files, which are 400 * used to implement streams, are independent objects with their own 401 * attributes. 402 * 403 * For compatibility with streams, we set the size on the extended attribute 404 * file and apply other attributes to the (unnamed stream) file. The one 405 * exception is that the UID and GID can be set on the stream by passing a 406 * NULL unnamed_vp, which allows callers to synchronize stream ownership 407 * with the (unnamed stream) file. 408 */ 409 410 int 411 smb_vop_setattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *set_attr, 412 int flags, cred_t *cr, boolean_t no_xvattr) 413 { 414 int error = 0; 415 int at_size = 0; 416 vnode_t *use_vp; 417 xvattr_t xvattr; 418 vattr_t *vap; 419 420 if (unnamed_vp) { 421 use_vp = unnamed_vp; 422 if (set_attr->sa_mask & SMB_AT_SIZE) { 423 at_size = 1; 424 set_attr->sa_mask &= ~SMB_AT_SIZE; 425 } 426 } else { 427 use_vp = vp; 428 } 429 430 /* 431 * The caller should not be setting sa_vattr.va_mask, 432 * but rather sa_mask. 433 */ 434 435 set_attr->sa_vattr.va_mask = 0; 436 437 if ((no_xvattr == B_FALSE) && 438 vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) { 439 440 smb_vop_setup_xvattr(set_attr, &xvattr); 441 vap = (vattr_t *)&xvattr; 442 } else { 443 smb_sa_to_va_mask(set_attr->sa_mask, 444 &set_attr->sa_vattr.va_mask); 445 vap = &set_attr->sa_vattr; 446 } 447 448 if ((error = VOP_SETATTR(use_vp, vap, flags, cr, &smb_ct)) != 0) 449 return (error); 450 451 /* 452 * If the size of the stream needs to be set, set it on 453 * the stream file directly. (All other indicated attributes 454 * are set on the stream's unnamed stream, except under the 455 * exception described in the function header.) 456 */ 457 458 if (at_size) { 459 /* 460 * set_attr->sa_vattr.va_size already contains the 461 * size as set by the caller 462 * 463 * Note that vp is used here, and not use_vp. 464 * Also, only AT_SIZE is needed. 465 */ 466 467 set_attr->sa_vattr.va_mask = AT_SIZE; 468 error = VOP_SETATTR(vp, &set_attr->sa_vattr, flags, cr, 469 &smb_ct); 470 } 471 472 return (error); 473 } 474 475 /* 476 * smb_vop_access 477 * 478 * This is a wrapper round VOP_ACCESS. VOP_ACCESS checks the given mode 479 * against file's ACL or Unix permissions. CIFS on the other hand needs to 480 * know if the requested operation can succeed for the given object, this 481 * requires more checks in case of DELETE bit since permissions on the parent 482 * directory are important as well. Based on Windows rules if parent's ACL 483 * grant FILE_DELETE_CHILD a file can be delete regardless of the file's 484 * permissions. 485 */ 486 int 487 smb_vop_access(vnode_t *vp, int mode, int flags, vnode_t *dir_vp, cred_t *cr) 488 { 489 int error = 0; 490 491 if (mode == 0) 492 return (0); 493 494 if ((flags == V_ACE_MASK) && (mode & ACE_DELETE)) { 495 if (dir_vp) { 496 error = VOP_ACCESS(dir_vp, ACE_DELETE_CHILD, flags, 497 cr, NULL); 498 499 if (error == 0) 500 mode &= ~ACE_DELETE; 501 } 502 } 503 504 if (mode) { 505 error = VOP_ACCESS(vp, mode, flags, cr, NULL); 506 } 507 508 return (error); 509 } 510 511 /* 512 * smb_vop_lookup 513 * 514 * dvp: directory vnode (in) 515 * name: name of file to be looked up (in) 516 * vpp: looked-up vnode (out) 517 * od_name: on-disk name of file (out). 518 * This parameter is optional. If a pointer is passed in, it 519 * must be allocated with MAXNAMELEN bytes 520 * rootvp: vnode of the tree root (in) 521 * This parameter is always passed in non-NULL except at the time 522 * of share set up. 523 */ 524 525 int 526 smb_vop_lookup( 527 vnode_t *dvp, 528 char *name, 529 vnode_t **vpp, 530 char *od_name, 531 int flags, 532 vnode_t *rootvp, 533 cred_t *cr) 534 { 535 int error = 0; 536 int option_flags = 0; 537 pathname_t rpn; 538 539 if (*name == '\0') 540 return (EINVAL); 541 542 ASSERT(vpp); 543 *vpp = NULL; 544 545 if ((name[0] == '.') && (name[1] == '.') && (name[2] == 0)) { 546 if (rootvp && (dvp == rootvp)) { 547 VN_HOLD(dvp); 548 *vpp = dvp; 549 return (0); 550 } 551 552 if (dvp->v_flag & VROOT) { 553 vfs_t *vfsp; 554 vnode_t *cvp = dvp; 555 556 /* 557 * Set dvp and check for races with forced unmount 558 * (see lookuppnvp()) 559 */ 560 561 vfsp = cvp->v_vfsp; 562 vfs_rlock_wait(vfsp); 563 if (((dvp = cvp->v_vfsp->vfs_vnodecovered) == NULL) || 564 (cvp->v_vfsp->vfs_flag & VFS_UNMOUNTED)) { 565 vfs_unlock(vfsp); 566 return (EIO); 567 } 568 vfs_unlock(vfsp); 569 } 570 } 571 572 573 574 if (flags & SMB_IGNORE_CASE) 575 option_flags = FIGNORECASE; 576 577 pn_alloc(&rpn); 578 579 error = VOP_LOOKUP(dvp, name, vpp, NULL, option_flags, NULL, cr, 580 &smb_ct, NULL, &rpn); 581 582 if ((error == 0) && od_name) { 583 bzero(od_name, MAXNAMELEN); 584 if (option_flags == FIGNORECASE) 585 (void) strlcpy(od_name, rpn.pn_buf, MAXNAMELEN); 586 else 587 (void) strlcpy(od_name, name, MAXNAMELEN); 588 } 589 590 pn_free(&rpn); 591 return (error); 592 } 593 594 int 595 smb_vop_create(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp, 596 int flags, cred_t *cr, vsecattr_t *vsap) 597 { 598 int error; 599 int option_flags = 0; 600 xvattr_t xvattr; 601 vattr_t *vap; 602 603 if (flags & SMB_IGNORE_CASE) 604 option_flags = FIGNORECASE; 605 606 attr->sa_vattr.va_mask = 0; 607 608 if (vfs_has_feature(dvp->v_vfsp, VFSFT_XVATTR)) { 609 smb_vop_setup_xvattr(attr, &xvattr); 610 vap = (vattr_t *)&xvattr; 611 } else { 612 smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask); 613 vap = &attr->sa_vattr; 614 } 615 616 error = VOP_CREATE(dvp, name, vap, EXCL, attr->sa_vattr.va_mode, 617 vpp, cr, option_flags, &smb_ct, vsap); 618 619 return (error); 620 } 621 622 int 623 smb_vop_remove(vnode_t *dvp, char *name, int flags, cred_t *cr) 624 { 625 int error; 626 int option_flags = 0; 627 628 if (flags & SMB_IGNORE_CASE) 629 option_flags = FIGNORECASE; 630 631 error = VOP_REMOVE(dvp, name, cr, &smb_ct, option_flags); 632 633 return (error); 634 } 635 636 /* 637 * smb_vop_rename() 638 * 639 * The rename is for files in the same tree (identical TID) only. 640 */ 641 642 int 643 smb_vop_rename(vnode_t *from_dvp, char *from_name, vnode_t *to_dvp, 644 char *to_name, int flags, cred_t *cr) 645 { 646 int error; 647 int option_flags = 0; 648 649 650 if (flags & SMB_IGNORE_CASE) 651 option_flags = FIGNORECASE; 652 653 error = VOP_RENAME(from_dvp, from_name, to_dvp, to_name, cr, 654 &smb_ct, option_flags); 655 656 return (error); 657 } 658 659 int 660 smb_vop_mkdir(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp, 661 int flags, cred_t *cr, vsecattr_t *vsap) 662 { 663 int error; 664 int option_flags = 0; 665 666 667 668 if (flags & SMB_IGNORE_CASE) 669 option_flags = FIGNORECASE; 670 671 smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask); 672 673 error = VOP_MKDIR(dvp, name, &attr->sa_vattr, vpp, cr, &smb_ct, 674 option_flags, vsap); 675 676 return (error); 677 } 678 679 /* 680 * smb_vop_rmdir() 681 * 682 * Only simple rmdir supported, consistent with NT semantics 683 * (can only remove an empty directory). 684 * 685 */ 686 687 int 688 smb_vop_rmdir(vnode_t *dvp, char *name, int flags, cred_t *cr) 689 { 690 int error; 691 int option_flags = 0; 692 693 if (flags & SMB_IGNORE_CASE) 694 option_flags = FIGNORECASE; 695 696 /* 697 * Comments adapted from rfs_rmdir(). 698 * 699 * VOP_RMDIR now takes a new third argument (the current 700 * directory of the process). That's because rmdir 701 * wants to return EINVAL if one tries to remove ".". 702 * Of course, SMB servers do not know what their 703 * clients' current directories are. We fake it by 704 * supplying a vnode known to exist and illegal to 705 * remove. 706 */ 707 708 error = VOP_RMDIR(dvp, name, rootdir, cr, &smb_ct, option_flags); 709 return (error); 710 } 711 712 int 713 smb_vop_commit(vnode_t *vp, cred_t *cr) 714 { 715 return (VOP_FSYNC(vp, 1, cr, &smb_ct)); 716 } 717 718 void 719 smb_vop_setup_xvattr(smb_attr_t *smb_attr, xvattr_t *xvattr) 720 { 721 xoptattr_t *xoap = NULL; 722 uint_t xva_mask; 723 724 /* 725 * Initialize xvattr, including bzero 726 */ 727 xva_init(xvattr); 728 xoap = xva_getxoptattr(xvattr); 729 730 ASSERT(xoap); 731 732 /* 733 * Copy caller-specified classic attributes to xvattr. 734 * First save xvattr's mask (set in xva_init()), which 735 * contains AT_XVATTR. This is |'d in later if needed. 736 */ 737 738 xva_mask = xvattr->xva_vattr.va_mask; 739 xvattr->xva_vattr = smb_attr->sa_vattr; 740 741 smb_sa_to_va_mask(smb_attr->sa_mask, &xvattr->xva_vattr.va_mask); 742 743 /* 744 * Do not set ctime (only the file system can do it) 745 */ 746 747 xvattr->xva_vattr.va_mask &= ~AT_CTIME; 748 749 if (smb_attr->sa_mask & SMB_AT_DOSATTR) { 750 751 /* 752 * "|" in the original xva_mask, which contains 753 * AT_XVATTR 754 */ 755 756 xvattr->xva_vattr.va_mask |= xva_mask; 757 758 XVA_SET_REQ(xvattr, XAT_ARCHIVE); 759 XVA_SET_REQ(xvattr, XAT_SYSTEM); 760 XVA_SET_REQ(xvattr, XAT_READONLY); 761 XVA_SET_REQ(xvattr, XAT_HIDDEN); 762 763 /* 764 * smb_attr->sa_dosattr: If a given bit is not set, 765 * that indicates that the corresponding field needs 766 * to be updated with a "0" value. This is done 767 * implicitly as the xoap->xoa_* fields were bzero'd. 768 */ 769 770 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_ARCHIVE) 771 xoap->xoa_archive = 1; 772 773 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_SYSTEM) 774 xoap->xoa_system = 1; 775 776 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_READONLY) 777 xoap->xoa_readonly = 1; 778 779 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_HIDDEN) 780 xoap->xoa_hidden = 1; 781 } 782 783 if (smb_attr->sa_mask & SMB_AT_CRTIME) { 784 /* 785 * "|" in the original xva_mask, which contains 786 * AT_XVATTR 787 */ 788 789 xvattr->xva_vattr.va_mask |= xva_mask; 790 XVA_SET_REQ(xvattr, XAT_CREATETIME); 791 xoap->xoa_createtime = smb_attr->sa_crtime; 792 } 793 } 794 795 796 /* 797 * smb_vop_readdir() 798 * 799 * Upon return, the "name" field will contain either the on-disk name or, if 800 * it needs mangling or has a case-insensitive collision, the mangled 801 * "shortname." 802 * 803 * vpp is an optional parameter. If non-NULL, it will contain a pointer to 804 * the vnode for the name that is looked up (the vnode will be returned held). 805 * 806 * od_name is an optional parameter (NULL can be passed if the on-disk name 807 * is not needed by the caller). 808 */ 809 810 int 811 smb_vop_readdir(vnode_t *dvp, uint32_t *cookiep, char *name, int *namelen, 812 ino64_t *inop, vnode_t **vpp, char *od_name, int flags, cred_t *cr) 813 { 814 int num_bytes; 815 int error = 0; 816 char *dirbuf = NULL; 817 818 ASSERT(dvp); 819 ASSERT(cookiep); 820 ASSERT(name); 821 ASSERT(namelen); 822 ASSERT(inop); 823 ASSERT(cr); 824 825 if (dvp->v_type != VDIR) { 826 *namelen = 0; 827 return (ENOTDIR); 828 } 829 830 if (vpp) 831 *vpp = NULL; 832 833 dirbuf = kmem_zalloc(SMB_MINLEN_RDDIR_BUF, KM_SLEEP); 834 num_bytes = SMB_MINLEN_RDDIR_BUF; 835 836 /* 837 * The goal is to retrieve the first valid entry from *cookiep 838 * forward. smb_vop_readdir_readpage() collects an 839 * SMB_MINLEN_RDDIR_BUF-size "page" of directory entry information. 840 * smb_vop_readdir_entry() attempts to find the first valid entry 841 * in that page. 842 */ 843 844 while ((error = smb_vop_readdir_readpage(dvp, dirbuf, *cookiep, 845 &num_bytes, cr, flags)) == 0) { 846 847 if (num_bytes <= 0) 848 break; 849 850 name[0] = '\0'; 851 852 error = smb_vop_readdir_entry(dvp, cookiep, name, namelen, 853 inop, vpp, od_name, flags, cr, dirbuf, num_bytes); 854 855 if (error) 856 break; 857 858 if (*name) 859 break; 860 861 bzero(dirbuf, SMB_MINLEN_RDDIR_BUF); 862 num_bytes = SMB_MINLEN_RDDIR_BUF; 863 } 864 865 866 if (error) { 867 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 868 *namelen = 0; 869 return (error); 870 } 871 872 if (num_bytes == 0) { /* EOF */ 873 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 874 *cookiep = SMB_EOF; 875 *namelen = 0; 876 return (0); 877 } 878 879 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 880 return (0); 881 } 882 883 /* 884 * smb_vop_readdir_readpage() 885 * 886 * Collects an SMB_MINLEN_RDDIR_BUF "page" of directory entries. (The 887 * directory entries are returned in an fs-independent format by the 888 * underlying file system. That is, the "page" of information returned is 889 * not literally stored on-disk in the format returned.) 890 * 891 * Much of the following is borrowed from getdents64() 892 * 893 * MAXGETDENTS_SIZE is defined in getdents.c 894 */ 895 896 #define MAXGETDENTS_SIZE (64 * 1024) 897 898 static int 899 smb_vop_readdir_readpage(vnode_t *vp, void *buf, uint32_t offset, int *count, 900 cred_t *cr, int flags) 901 { 902 int error = 0; 903 int rdirent_flags = 0; 904 int sink; 905 struct uio auio; 906 struct iovec aiov; 907 908 if (vp->v_type != VDIR) 909 return (ENOTDIR); 910 911 /* entflags not working for streams so don't try to use them */ 912 if (!(flags & SMB_STREAM_RDDIR) && 913 (vfs_has_feature(vp->v_vfsp, VFSFT_DIRENTFLAGS))) { 914 /* 915 * Setting V_RDDIR_ENTFLAGS will cause the buffer to 916 * be filled with edirent_t structures (instead of 917 * dirent64_t structures). 918 */ 919 rdirent_flags = V_RDDIR_ENTFLAGS; 920 921 if (*count < sizeof (edirent_t)) 922 return (EINVAL); 923 } else { 924 if (*count < sizeof (dirent64_t)) 925 return (EINVAL); 926 } 927 928 if (*count > MAXGETDENTS_SIZE) 929 *count = MAXGETDENTS_SIZE; 930 931 aiov.iov_base = buf; 932 aiov.iov_len = *count; 933 auio.uio_iov = &aiov; 934 auio.uio_iovcnt = 1; 935 auio.uio_loffset = (uint64_t)offset; 936 auio.uio_segflg = UIO_SYSSPACE; 937 auio.uio_resid = *count; 938 auio.uio_fmode = 0; 939 940 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); 941 error = VOP_READDIR(vp, &auio, cr, &sink, &smb_ct, rdirent_flags); 942 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); 943 944 if (error) { 945 if (error == ENOENT) { 946 /* Fake EOF if offset is bad due to dropping of lock */ 947 *count = 0; 948 return (0); 949 } else { 950 return (error); 951 } 952 } 953 954 /* 955 * Windows cannot handle an offset > SMB_EOF. 956 * Pretend we are at EOF. 957 */ 958 959 if (auio.uio_loffset > SMB_EOF) { 960 *count = 0; 961 return (0); 962 } 963 964 *count = *count - auio.uio_resid; 965 return (0); 966 } 967 968 /* 969 * smb_vop_readdir_entry() 970 * 971 * This function retrieves the first valid entry from the 972 * SMB_MINLEN_RDDIR_BUF-sized buffer returned by smb_vop_readdir_readpage() 973 * to smb_vop_readdir(). 974 * 975 * Both dirent64_t and edirent_t structures need to be handled. The former is 976 * needed for file systems that do not support VFSFT_DIRENTFLAGS. The latter 977 * is required for proper handling of case collisions on file systems that 978 * support case-insensitivity. edirent_t structures are also used for 979 * case-sensitive file systems if VFSFT_DIRENTFLAGS is supported. 980 */ 981 982 static int 983 smb_vop_readdir_entry( 984 vnode_t *dvp, 985 uint32_t *cookiep, 986 char *name, 987 int *namelen, 988 ino64_t *inop, 989 vnode_t **vpp, 990 char *od_name, 991 int flags, 992 cred_t *cr, 993 char *dirbuf, 994 int num_bytes) 995 { 996 uint32_t next_cookie; 997 int ebufsize; 998 int error = 0; 999 int len; 1000 int rc; 1001 char shortname[MANGLE_NAMELEN]; 1002 char name83[MANGLE_NAMELEN]; 1003 char *ebuf = NULL; 1004 edirent_t *edp; 1005 dirent64_t *dp = NULL; 1006 vnode_t *vp = NULL; 1007 1008 ASSERT(dirbuf); 1009 1010 /* 1011 * Use edirent_t structure for both 1012 * entflags not working for streams so don't try to use them 1013 */ 1014 if (!(flags & SMB_STREAM_RDDIR) && 1015 (vfs_has_feature(dvp->v_vfsp, VFSFT_DIRENTFLAGS))) { 1016 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1017 edp = (edirent_t *)dirbuf; 1018 } else { 1019 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1020 dp = (dirent64_t *)dirbuf; 1021 ebufsize = EDIRENT_RECLEN(MAXNAMELEN); 1022 ebuf = kmem_zalloc(ebufsize, KM_SLEEP); 1023 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1024 edp = (edirent_t *)ebuf; 1025 } 1026 1027 while (edp) { 1028 if (dp) 1029 DP_TO_EDP(dp, edp); 1030 1031 next_cookie = (uint32_t)edp->ed_off; 1032 if (edp->ed_ino == 0) { 1033 *cookiep = next_cookie; 1034 1035 if (dp) { 1036 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1037 DP_ADVANCE(dp, dirbuf, num_bytes); 1038 if (dp == NULL) 1039 edp = NULL; 1040 } else { 1041 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1042 EDP_ADVANCE(edp, dirbuf, num_bytes); 1043 } 1044 continue; 1045 } 1046 1047 len = strlen(edp->ed_name); 1048 1049 if (*namelen < len) { 1050 *namelen = 0; 1051 1052 if (ebuf) 1053 kmem_free(ebuf, ebufsize); 1054 1055 return (EOVERFLOW); 1056 } 1057 1058 /* 1059 * Do not pass SMB_IGNORE_CASE to smb_vop_lookup 1060 */ 1061 1062 error = smb_vop_lookup(dvp, edp->ed_name, vpp ? vpp : &vp, 1063 od_name, 0, NULL, cr); 1064 1065 if (error) { 1066 if (error == ENOENT) { 1067 *cookiep = (uint32_t)next_cookie; 1068 1069 if (dp) { 1070 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1071 DP_ADVANCE(dp, dirbuf, num_bytes); 1072 if (dp == NULL) 1073 edp = NULL; 1074 } else { 1075 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1076 EDP_ADVANCE(edp, dirbuf, num_bytes); 1077 } 1078 continue; 1079 } 1080 1081 1082 *namelen = 0; 1083 1084 if (ebuf) 1085 kmem_free(ebuf, ebufsize); 1086 1087 return (error); 1088 } 1089 1090 if ((flags & SMB_IGNORE_CASE) && ED_CASE_CONFLICTS(edp)) { 1091 rc = smb_mangle_name(edp->ed_ino, edp->ed_name, 1092 shortname, name83, 1); 1093 1094 if (rc == 1) { /* success */ 1095 (void) strlcpy(name, shortname, *namelen + 1); 1096 *namelen = strlen(shortname); 1097 } else { 1098 (void) strlcpy(name, edp->ed_name, 1099 *namelen + 1); 1100 name[*namelen] = '\0'; 1101 } 1102 1103 } else { 1104 (void) strlcpy(name, edp->ed_name, *namelen + 1); 1105 *namelen = len; 1106 } 1107 1108 if (vpp == NULL) 1109 VN_RELE(vp); 1110 1111 if (inop) 1112 *inop = edp->ed_ino; 1113 1114 *cookiep = (uint32_t)next_cookie; 1115 break; 1116 } 1117 1118 if (ebuf) 1119 kmem_free(ebuf, ebufsize); 1120 1121 return (error); 1122 } 1123 1124 /* 1125 * smb_sa_to_va_mask 1126 * 1127 * Set va_mask by running through the SMB_AT_* #define's and 1128 * setting those bits that correspond to the SMB_AT_* bits 1129 * set in sa_mask. 1130 */ 1131 1132 void 1133 smb_sa_to_va_mask(uint_t sa_mask, uint_t *va_maskp) 1134 { 1135 int i; 1136 uint_t smask; 1137 1138 smask = (sa_mask); 1139 for (i = SMB_AT_TYPE; (i < SMB_AT_MAX) && (smask != 0); ++i) { 1140 if (smask & 1) 1141 *(va_maskp) |= smb_attrmap[i]; 1142 1143 smask >>= 1; 1144 } 1145 } 1146 1147 /* 1148 * smb_vop_getdents() 1149 * 1150 * Upon success, the smb_node corresponding to each entry returned will 1151 * have a reference taken on it. These will be released in 1152 * smb_trans2_find_get_dents(). 1153 * 1154 * If an error is returned from this routine, a list of already processed 1155 * entries will be returned. The smb_nodes corresponding to these entries 1156 * will be referenced, and will be released in smb_trans2_find_get_dents(). 1157 * 1158 * The returned dp->d_name field will contain either the on-disk name or, if 1159 * it needs mangling or has a case-insensitive collision, the mangled 1160 * "shortname." In this case, the on-disk name can be retrieved from the 1161 * smb_node's od_name (the smb_node is passed to smb_gather_dents_info()). 1162 */ 1163 1164 int /*ARGSUSED*/ 1165 smb_vop_getdents( 1166 smb_node_t *dir_snode, 1167 uint32_t *cookiep, 1168 uint64_t *verifierp, 1169 int32_t *dircountp, 1170 char *arg, 1171 char *pattern, 1172 uint32_t flags, 1173 smb_request_t *sr, 1174 cred_t *cr) 1175 { 1176 int error = 0; 1177 int maxentries; 1178 int num_bytes; 1179 int resid; 1180 char *dirbuf = NULL; 1181 vnode_t *dvp; 1182 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1183 smb_dent_info_hdr_t *ihdr = (smb_dent_info_hdr_t *)arg; 1184 1185 dvp = dir_snode->vp; 1186 1187 resid = ihdr->uio.uio_resid; 1188 maxentries = resid / SMB_MAX_DENT_INFO_SIZE; 1189 1190 bzero(ihdr->iov->iov_base, resid); 1191 1192 dirbuf = kmem_alloc(SMB_MINLEN_RDDIR_BUF, KM_SLEEP); 1193 1194 while (maxentries) { 1195 1196 bzero(dirbuf, SMB_MINLEN_RDDIR_BUF); 1197 1198 num_bytes = SMB_MINLEN_RDDIR_BUF; 1199 error = smb_vop_readdir_readpage(dvp, dirbuf, *cookiep, 1200 &num_bytes, cr, flags); 1201 1202 if (error || (num_bytes <= 0)) 1203 break; 1204 1205 error = smb_vop_getdents_entries(dir_snode, cookiep, dircountp, 1206 arg, flags, sr, cr, dirbuf, &maxentries, num_bytes, 1207 pattern); 1208 1209 if (error) 1210 goto out; 1211 } 1212 1213 if (num_bytes < 0) { 1214 error = -1; 1215 } else if (num_bytes == 0) { 1216 *cookiep = SMB_EOF; 1217 error = 0; 1218 } else { 1219 error = 0; 1220 } 1221 1222 out: 1223 if (dirbuf) 1224 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 1225 1226 return (error); 1227 } 1228 1229 /* 1230 * smb_vop_getdents_entries() 1231 * 1232 * This function retrieves names from the SMB_MINLEN_RDDIR_BUF-sized buffer 1233 * returned by smb_vop_readdir_readpage() to smb_vop_getdents(). 1234 * 1235 * Both dirent64_t and edirent_t structures need to be handled. The former is 1236 * needed for file systems that do not support VFSFT_DIRENTFLAGS. The latter 1237 * is required for properly handling case collisions on file systems that 1238 * support case-insensitivity. edirent_t is also used on case-sensitive 1239 * file systems where VFSFT_DIRENTFLAGS is available. 1240 */ 1241 1242 static int 1243 smb_vop_getdents_entries( 1244 smb_node_t *dir_snode, 1245 uint32_t *cookiep, 1246 int32_t *dircountp, 1247 char *arg, 1248 uint32_t flags, 1249 smb_request_t *sr, 1250 cred_t *cr, 1251 char *dirbuf, 1252 int *maxentries, 1253 int num_bytes, 1254 char *pattern) 1255 { 1256 uint32_t next_cookie; 1257 int ebufsize; 1258 char *tmp_name; 1259 int error; 1260 int rc; 1261 char shortname[MANGLE_NAMELEN]; 1262 char name83[MANGLE_NAMELEN]; 1263 char *ebuf = NULL; 1264 dirent64_t *dp = NULL; 1265 edirent_t *edp; 1266 smb_node_t *ret_snode; 1267 smb_attr_t ret_attr; 1268 vnode_t *dvp; 1269 vnode_t *fvp; 1270 1271 ASSERT(dirbuf); 1272 1273 dvp = dir_snode->vp; 1274 1275 if (vfs_has_feature(dvp->v_vfsp, VFSFT_DIRENTFLAGS)) { 1276 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1277 edp = (edirent_t *)dirbuf; 1278 } else { 1279 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1280 dp = (dirent64_t *)dirbuf; 1281 ebufsize = EDIRENT_RECLEN(MAXNAMELEN); 1282 ebuf = kmem_zalloc(ebufsize, KM_SLEEP); 1283 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1284 edp = (edirent_t *)ebuf; 1285 } 1286 1287 while (edp) { 1288 if (dp) 1289 DP_TO_EDP(dp, edp); 1290 1291 if (*maxentries == 0) 1292 break; 1293 1294 next_cookie = (uint32_t)edp->ed_off; 1295 1296 if (edp->ed_ino == 0) { 1297 *cookiep = next_cookie; 1298 if (dp) { 1299 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1300 DP_ADVANCE(dp, dirbuf, num_bytes); 1301 if (dp == NULL) 1302 edp = NULL; 1303 } else { 1304 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1305 EDP_ADVANCE(edp, dirbuf, num_bytes); 1306 } 1307 continue; 1308 } 1309 1310 error = smb_vop_lookup(dvp, edp->ed_name, &fvp, 1311 NULL, 0, NULL, cr); 1312 1313 if (error) { 1314 if (error == ENOENT) { 1315 *cookiep = next_cookie; 1316 if (dp) { 1317 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1318 DP_ADVANCE(dp, dirbuf, 1319 num_bytes); 1320 if (dp == NULL) 1321 edp = NULL; 1322 } else { 1323 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1324 EDP_ADVANCE(edp, dirbuf, 1325 num_bytes); 1326 } 1327 continue; 1328 } 1329 if (ebuf) 1330 kmem_free(ebuf, ebufsize); 1331 1332 return (error); 1333 } 1334 1335 ret_snode = smb_node_lookup(sr, NULL, cr, fvp, 1336 edp->ed_name, dir_snode, NULL, &ret_attr); 1337 1338 if (ret_snode == NULL) { 1339 VN_RELE(fvp); 1340 1341 if (ebuf) 1342 kmem_free(ebuf, ebufsize); 1343 1344 return (ENOMEM); 1345 } 1346 1347 if (smb_match_name(edp->ed_ino, edp->ed_name, shortname, 1348 name83, pattern, (flags & SMB_IGNORE_CASE))) { 1349 1350 tmp_name = edp->ed_name; 1351 1352 if ((flags & SMB_IGNORE_CASE) && 1353 ED_CASE_CONFLICTS(edp)) { 1354 rc = smb_mangle_name(edp->ed_ino, edp->ed_name, 1355 shortname, name83, 1); 1356 if (rc == 1) 1357 tmp_name = shortname; 1358 } else { 1359 rc = smb_mangle_name(edp->ed_ino, edp->ed_name, 1360 shortname, name83, 0); 1361 } 1362 1363 if (rc != 1) { 1364 (void) strlcpy(shortname, edp->ed_name, 1365 MANGLE_NAMELEN); 1366 (void) strlcpy(name83, edp->ed_name, 1367 MANGLE_NAMELEN); 1368 shortname[MANGLE_NAMELEN - 1] = '\0'; 1369 name83[MANGLE_NAMELEN - 1] = '\0'; 1370 } 1371 1372 error = smb_gather_dents_info(arg, edp->ed_ino, 1373 strlen(tmp_name), tmp_name, next_cookie, dircountp, 1374 &ret_attr, ret_snode, shortname, name83); 1375 1376 if (error > 0) { 1377 if (ebuf) 1378 kmem_free(ebuf, ebufsize); 1379 return (error); 1380 } 1381 1382 /* 1383 * Treat errors from smb_gather_dents_info() that are 1384 * < 0 the same as EOF. 1385 */ 1386 if (error < 0) { 1387 if (ebuf) 1388 kmem_free(ebuf, ebufsize); 1389 *maxentries = 0; 1390 return (0); 1391 } 1392 (*maxentries)--; 1393 } else { 1394 smb_node_release(ret_snode); 1395 } 1396 1397 *cookiep = next_cookie; 1398 1399 if (dp) { 1400 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1401 DP_ADVANCE(dp, dirbuf, num_bytes); 1402 if (dp == NULL) 1403 edp = NULL; 1404 } else { 1405 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1406 EDP_ADVANCE(edp, dirbuf, num_bytes); 1407 } 1408 } 1409 1410 if (ebuf) 1411 kmem_free(ebuf, ebufsize); 1412 1413 return (0); 1414 } 1415 1416 /* 1417 * smb_vop_stream_lookup() 1418 * 1419 * The name returned in od_name is the on-disk name of the stream with the 1420 * SMB_STREAM_PREFIX stripped off. od_name should be allocated to MAXNAMELEN 1421 * by the caller. 1422 */ 1423 1424 int 1425 smb_vop_stream_lookup( 1426 vnode_t *fvp, 1427 char *stream_name, 1428 vnode_t **vpp, 1429 char *od_name, 1430 vnode_t **xattrdirvpp, 1431 int flags, 1432 vnode_t *rootvp, 1433 cred_t *cr) 1434 { 1435 char *solaris_stream_name; 1436 char *name; 1437 int error; 1438 1439 if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp, 1440 LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0) 1441 return (error); 1442 1443 /* 1444 * Prepend SMB_STREAM_PREFIX to stream name 1445 */ 1446 1447 solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); 1448 (void) sprintf(solaris_stream_name, "%s%s", SMB_STREAM_PREFIX, 1449 stream_name); 1450 1451 /* 1452 * "name" will hold the on-disk name returned from smb_vop_lookup 1453 * for the stream, including the SMB_STREAM_PREFIX. 1454 */ 1455 1456 name = kmem_zalloc(MAXNAMELEN, KM_SLEEP); 1457 1458 if ((error = smb_vop_lookup(*xattrdirvpp, solaris_stream_name, vpp, 1459 name, flags, rootvp, cr)) != 0) { 1460 VN_RELE(*xattrdirvpp); 1461 } else { 1462 (void) strlcpy(od_name, &(name[SMB_STREAM_PREFIX_LEN]), 1463 MAXNAMELEN); 1464 } 1465 1466 kmem_free(solaris_stream_name, MAXNAMELEN); 1467 kmem_free(name, MAXNAMELEN); 1468 1469 return (error); 1470 } 1471 1472 int 1473 smb_vop_stream_create(vnode_t *fvp, char *stream_name, smb_attr_t *attr, 1474 vnode_t **vpp, vnode_t **xattrdirvpp, int flags, cred_t *cr) 1475 { 1476 char *solaris_stream_name; 1477 int error; 1478 1479 if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp, 1480 LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0) 1481 return (error); 1482 1483 /* 1484 * Prepend SMB_STREAM_PREFIX to stream name 1485 */ 1486 1487 solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); 1488 (void) sprintf(solaris_stream_name, "%s%s", SMB_STREAM_PREFIX, 1489 stream_name); 1490 1491 if ((error = smb_vop_create(*xattrdirvpp, solaris_stream_name, attr, 1492 vpp, flags, cr, NULL)) != 0) 1493 VN_RELE(*xattrdirvpp); 1494 1495 kmem_free(solaris_stream_name, MAXNAMELEN); 1496 1497 return (error); 1498 } 1499 1500 int 1501 smb_vop_stream_remove(vnode_t *vp, char *stream_name, int flags, cred_t *cr) 1502 { 1503 char *solaris_stream_name; 1504 vnode_t *xattrdirvp; 1505 int error; 1506 1507 error = smb_vop_lookup_xattrdir(vp, &xattrdirvp, LOOKUP_XATTR, cr); 1508 if (error != 0) 1509 return (error); 1510 1511 /* 1512 * Prepend SMB_STREAM_PREFIX to stream name 1513 */ 1514 1515 solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); 1516 (void) sprintf(solaris_stream_name, "%s%s", SMB_STREAM_PREFIX, 1517 stream_name); 1518 1519 /* XXX might have to use kcred */ 1520 error = smb_vop_remove(xattrdirvp, solaris_stream_name, flags, cr); 1521 1522 kmem_free(solaris_stream_name, MAXNAMELEN); 1523 1524 return (error); 1525 } 1526 1527 /* 1528 * smb_vop_stream_readdir() 1529 * 1530 * Note: stream_info.size is not filled in in this routine. 1531 * It needs to be filled in by the caller due to the parameters for getattr. 1532 * 1533 * stream_info.name is set to the on-disk stream name with the SMB_STREAM_PREFIX 1534 * removed. 1535 */ 1536 1537 int 1538 smb_vop_stream_readdir(vnode_t *fvp, uint32_t *cookiep, 1539 struct fs_stream_info *stream_info, vnode_t **vpp, vnode_t **xattrdirvpp, 1540 int flags, cred_t *cr) 1541 { 1542 int nsize; 1543 int error = 0; 1544 ino64_t ino; 1545 char *tmp_name; 1546 vnode_t *xattrdirvp; 1547 vnode_t *vp; 1548 1549 if ((error = smb_vop_lookup_xattrdir(fvp, &xattrdirvp, LOOKUP_XATTR, 1550 cr)) != 0) 1551 return (error); 1552 1553 bzero(stream_info->name, sizeof (stream_info->name)); 1554 stream_info->size = 0; 1555 1556 tmp_name = kmem_zalloc(MAXNAMELEN, KM_SLEEP); 1557 1558 for (;;) { 1559 nsize = MAXNAMELEN-1; 1560 error = smb_vop_readdir(xattrdirvp, cookiep, tmp_name, &nsize, 1561 &ino, &vp, NULL, flags | SMB_STREAM_RDDIR, cr); 1562 1563 if (error || (*cookiep == SMB_EOF)) 1564 break; 1565 1566 if (strncmp(tmp_name, SMB_STREAM_PREFIX, 1567 SMB_STREAM_PREFIX_LEN)) { 1568 VN_RELE(vp); 1569 continue; 1570 } 1571 1572 tmp_name[nsize] = '\0'; 1573 (void) strlcpy(stream_info->name, 1574 &(tmp_name[SMB_STREAM_PREFIX_LEN]), 1575 sizeof (stream_info->name)); 1576 1577 nsize -= SMB_STREAM_PREFIX_LEN; 1578 break; 1579 } 1580 1581 if ((error == 0) && nsize) { 1582 if (vpp) 1583 *vpp = vp; 1584 else 1585 VN_RELE(vp); 1586 1587 if (xattrdirvpp) 1588 *xattrdirvpp = xattrdirvp; 1589 else 1590 VN_RELE(xattrdirvp); 1591 1592 } else { 1593 VN_RELE(xattrdirvp); 1594 } 1595 1596 kmem_free(tmp_name, MAXNAMELEN); 1597 1598 return (error); 1599 } 1600 1601 int 1602 smb_vop_lookup_xattrdir(vnode_t *fvp, vnode_t **xattrdirvpp, int flags, 1603 cred_t *cr) 1604 { 1605 int error; 1606 1607 error = VOP_LOOKUP(fvp, "", xattrdirvpp, NULL, flags, NULL, cr, 1608 &smb_ct, NULL, NULL); 1609 return (error); 1610 } 1611 1612 /* 1613 * smb_vop_traverse_check() 1614 * 1615 * This function checks to see if the passed-in vnode has a file system 1616 * mounted on it. If it does, the mount point is "traversed" and the 1617 * vnode for the root of the file system is returned. 1618 */ 1619 1620 int 1621 smb_vop_traverse_check(vnode_t **vpp) 1622 { 1623 int error; 1624 1625 if (vn_mountedvfs(*vpp) == 0) 1626 return (0); 1627 1628 /* 1629 * traverse() may return a different held vnode, even in the error case. 1630 * If it returns a different vnode, it will have released the original. 1631 */ 1632 1633 error = traverse(vpp); 1634 1635 return (error); 1636 } 1637 1638 int /*ARGSUSED*/ 1639 smb_vop_statfs(vnode_t *vp, struct statvfs64 *statp, cred_t *cr) 1640 { 1641 int error; 1642 1643 error = VFS_STATVFS(vp->v_vfsp, statp); 1644 1645 return (error); 1646 } 1647 1648 /* 1649 * smb_vop_acl_read 1650 * 1651 * Reads the ACL of the specified file into 'aclp'. 1652 * acl_type is the type of ACL which the filesystem supports. 1653 * 1654 * Caller has to free the allocated memory for aclp by calling 1655 * acl_free(). 1656 */ 1657 int 1658 smb_vop_acl_read(vnode_t *vp, acl_t **aclp, int flags, acl_type_t acl_type, 1659 cred_t *cr) 1660 { 1661 int error; 1662 vsecattr_t vsecattr; 1663 1664 ASSERT(vp); 1665 ASSERT(aclp); 1666 1667 *aclp = NULL; 1668 bzero(&vsecattr, sizeof (vsecattr_t)); 1669 1670 switch (acl_type) { 1671 case ACLENT_T: 1672 vsecattr.vsa_mask = VSA_ACL | VSA_ACLCNT | VSA_DFACL | 1673 VSA_DFACLCNT; 1674 break; 1675 1676 case ACE_T: 1677 vsecattr.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS; 1678 break; 1679 1680 default: 1681 return (EINVAL); 1682 } 1683 1684 if (error = VOP_GETSECATTR(vp, &vsecattr, flags, cr, &smb_ct)) 1685 return (error); 1686 1687 *aclp = smb_fsacl_from_vsa(&vsecattr, acl_type); 1688 if (vp->v_type == VDIR) 1689 (*aclp)->acl_flags |= ACL_IS_DIR; 1690 1691 return (0); 1692 } 1693 1694 /* 1695 * smb_vop_acl_write 1696 * 1697 * Writes the given ACL in aclp for the specified file. 1698 */ 1699 int 1700 smb_vop_acl_write(vnode_t *vp, acl_t *aclp, int flags, cred_t *cr) 1701 { 1702 int error; 1703 vsecattr_t vsecattr; 1704 int aclbsize; 1705 1706 ASSERT(vp); 1707 ASSERT(aclp); 1708 1709 error = smb_fsacl_to_vsa(aclp, &vsecattr, &aclbsize); 1710 1711 if (error == 0) { 1712 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 1713 error = VOP_SETSECATTR(vp, &vsecattr, flags, cr, &smb_ct); 1714 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 1715 } 1716 1717 if (aclbsize && vsecattr.vsa_aclentp) 1718 kmem_free(vsecattr.vsa_aclentp, aclbsize); 1719 1720 return (error); 1721 } 1722 1723 /* 1724 * smb_vop_acl_type 1725 * 1726 * Determines the ACL type for the given vnode. 1727 * ACLENT_T is a Posix ACL and ACE_T is a ZFS ACL. 1728 */ 1729 acl_type_t 1730 smb_vop_acl_type(vnode_t *vp) 1731 { 1732 int error; 1733 ulong_t whichacl; 1734 1735 error = VOP_PATHCONF(vp, _PC_ACL_ENABLED, &whichacl, kcred, NULL); 1736 if (error != 0) { 1737 /* 1738 * If we got an error, then the filesystem 1739 * likely does not understand the _PC_ACL_ENABLED 1740 * pathconf. In this case, we fall back to trying 1741 * POSIX-draft (aka UFS-style) ACLs. 1742 */ 1743 whichacl = _ACL_ACLENT_ENABLED; 1744 } 1745 1746 if (!(whichacl & (_ACL_ACE_ENABLED | _ACL_ACLENT_ENABLED))) { 1747 /* 1748 * If the file system supports neither ACE nor 1749 * ACLENT ACLs we will fall back to UFS-style ACLs 1750 * like we did above if there was an error upon 1751 * calling VOP_PATHCONF. 1752 * 1753 * ACE and ACLENT type ACLs are the only interfaces 1754 * supported thus far. If any other bits are set on 1755 * 'whichacl' upon return from VOP_PATHCONF, we will 1756 * ignore them. 1757 */ 1758 whichacl = _ACL_ACLENT_ENABLED; 1759 } 1760 1761 if (whichacl == _ACL_ACLENT_ENABLED) 1762 return (ACLENT_T); 1763 1764 return (ACE_T); 1765 } 1766 1767 static int zfs_perms[] = { 1768 ACE_READ_DATA, ACE_WRITE_DATA, ACE_APPEND_DATA, ACE_READ_NAMED_ATTRS, 1769 ACE_WRITE_NAMED_ATTRS, ACE_EXECUTE, ACE_DELETE_CHILD, 1770 ACE_READ_ATTRIBUTES, ACE_WRITE_ATTRIBUTES, ACE_DELETE, ACE_READ_ACL, 1771 ACE_WRITE_ACL, ACE_WRITE_OWNER, ACE_SYNCHRONIZE 1772 }; 1773 1774 static int unix_perms[] = { VREAD, VWRITE, VEXEC }; 1775 /* 1776 * smb_vop_eaccess 1777 * 1778 * Returns the effective permission of the given credential for the 1779 * specified object. 1780 * 1781 * This is just a workaround. We need VFS/FS support for this. 1782 */ 1783 void 1784 smb_vop_eaccess(vnode_t *vp, int *mode, int flags, vnode_t *dir_vp, cred_t *cr) 1785 { 1786 int error, i; 1787 int pnum; 1788 1789 *mode = 0; 1790 1791 if (flags == V_ACE_MASK) { 1792 pnum = sizeof (zfs_perms) / sizeof (int); 1793 1794 for (i = 0; i < pnum; i++) { 1795 error = smb_vop_access(vp, zfs_perms[i], flags, 1796 dir_vp, cr); 1797 if (error == 0) 1798 *mode |= zfs_perms[i]; 1799 } 1800 } else { 1801 pnum = sizeof (unix_perms) / sizeof (int); 1802 1803 for (i = 0; i < pnum; i++) { 1804 error = smb_vop_access(vp, unix_perms[i], flags, 1805 dir_vp, cr); 1806 if (error == 0) 1807 *mode |= unix_perms[i]; 1808 } 1809 } 1810 } 1811 1812 /* 1813 * smb_vop_shrlock() 1814 * 1815 * See comments for smb_fsop_shrlock() 1816 */ 1817 1818 int 1819 smb_vop_shrlock(vnode_t *vp, uint32_t uniq_fid, uint32_t desired_access, 1820 uint32_t share_access, cred_t *cr) 1821 { 1822 struct shrlock shr; 1823 struct shr_locowner shr_own; 1824 short new_access = 0; 1825 short deny = 0; 1826 int flag = 0; 1827 int cmd; 1828 1829 cmd = (nbl_need_check(vp)) ? F_SHARE_NBMAND : F_SHARE; 1830 1831 /* 1832 * Check if this is a metadata access 1833 */ 1834 1835 if ((desired_access & FILE_DATA_ALL) == 0) { 1836 new_access |= F_MDACC; 1837 } else { 1838 if (desired_access & (ACE_READ_DATA | ACE_EXECUTE)) { 1839 new_access |= F_RDACC; 1840 flag |= FREAD; 1841 } 1842 1843 if (desired_access & (ACE_WRITE_DATA | ACE_APPEND_DATA | 1844 ACE_ADD_FILE)) { 1845 new_access |= F_WRACC; 1846 flag |= FWRITE; 1847 } 1848 1849 if (SMB_DENY_READ(share_access)) { 1850 deny |= F_RDDNY; 1851 } 1852 1853 if (SMB_DENY_WRITE(share_access)) { 1854 deny |= F_WRDNY; 1855 } 1856 1857 if (cmd == F_SHARE_NBMAND) { 1858 if (desired_access & ACE_DELETE) 1859 new_access |= F_RMACC; 1860 1861 if (SMB_DENY_DELETE(share_access)) { 1862 deny |= F_RMDNY; 1863 } 1864 } 1865 } 1866 1867 shr.s_access = new_access; 1868 shr.s_deny = deny; 1869 shr.s_sysid = smb_ct.cc_sysid; 1870 shr.s_pid = uniq_fid; 1871 shr.s_own_len = sizeof (shr_own); 1872 shr.s_owner = (caddr_t)&shr_own; 1873 shr_own.sl_id = shr.s_sysid; 1874 shr_own.sl_pid = shr.s_pid; 1875 1876 return (VOP_SHRLOCK(vp, cmd, &shr, flag, cr, NULL)); 1877 } 1878 1879 int 1880 smb_vop_unshrlock(vnode_t *vp, uint32_t uniq_fid, cred_t *cr) 1881 { 1882 struct shrlock shr; 1883 struct shr_locowner shr_own; 1884 1885 /* 1886 * For s_access and s_deny, we do not need to pass in the original 1887 * values. 1888 */ 1889 1890 shr.s_access = 0; 1891 shr.s_deny = 0; 1892 shr.s_sysid = smb_ct.cc_sysid; 1893 shr.s_pid = uniq_fid; 1894 shr.s_own_len = sizeof (shr_own); 1895 shr.s_owner = (caddr_t)&shr_own; 1896 shr_own.sl_id = shr.s_sysid; 1897 shr_own.sl_pid = shr.s_pid; 1898 1899 return (VOP_SHRLOCK(vp, F_UNSHARE, &shr, 0, cr, NULL)); 1900 } 1901 1902 int 1903 smb_vop_frlock(vnode_t *vp, cred_t *cr, int flag, flock64_t *bf) 1904 { 1905 int cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 1906 flk_callback_t flk_cb; 1907 1908 flk_init_callback(&flk_cb, smb_lock_frlock_callback, NULL); 1909 1910 return (VOP_FRLOCK(vp, cmd, bf, flag, 0, &flk_cb, cr, &smb_ct)); 1911 } 1912 1913 static callb_cpr_t * 1914 /* ARGSUSED */ 1915 smb_lock_frlock_callback(flk_cb_when_t when, void *error) 1916 { 1917 return (0); 1918 } 1919