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 "@(#)smb_vops.c 1.13 08/07/30 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 *); 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 void 162 smb_vop_close(vnode_t *vp, int mode, cred_t *cred) 163 { 164 (void) 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, int ioflag, uint32_t *lcount, 204 cred_t *cr) 205 { 206 int error; 207 208 *lcount = uiop->uio_resid; 209 210 uiop->uio_llimit = MAXOFFSET_T; 211 212 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 213 error = VOP_WRITE(vp, uiop, ioflag, cr, &smb_ct); 214 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 215 216 *lcount -= uiop->uio_resid; 217 218 return (error); 219 } 220 221 /* 222 * smb_vop_getattr() 223 * 224 * smb_fsop_getattr()/smb_vop_getattr() should always be called from the CIFS 225 * service (instead of calling VOP_GETATTR directly) to retrieve attributes 226 * due to special processing needed for streams files. 227 * 228 * All attributes are retrieved. 229 * 230 * A named stream's attributes (as far as CIFS is concerned) are those of the 231 * unnamed (i.e. data) stream (minus the size attribute), and the size of the 232 * named stream. Though the file system may store attributes other than size 233 * with the named stream, these should not be used by CIFS for any purpose. 234 * 235 * When vp denotes a named stream, then unnamed_vp should be passed in (denoting 236 * the corresponding unnamed stream). 237 */ 238 239 int 240 smb_vop_getattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *ret_attr, 241 int flags, cred_t *cr) 242 { 243 int error; 244 vnode_t *use_vp; 245 smb_attr_t tmp_attr; 246 xvattr_t tmp_xvattr; 247 xoptattr_t *xoap = NULL; 248 249 if (unnamed_vp) 250 use_vp = unnamed_vp; 251 else 252 use_vp = vp; 253 254 if (vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) { 255 xva_init(&tmp_xvattr); 256 xoap = xva_getxoptattr(&tmp_xvattr); 257 258 ASSERT(xoap); 259 260 smb_sa_to_va_mask(ret_attr->sa_mask, 261 &tmp_xvattr.xva_vattr.va_mask); 262 263 XVA_SET_REQ(&tmp_xvattr, XAT_READONLY); 264 XVA_SET_REQ(&tmp_xvattr, XAT_HIDDEN); 265 XVA_SET_REQ(&tmp_xvattr, XAT_SYSTEM); 266 XVA_SET_REQ(&tmp_xvattr, XAT_ARCHIVE); 267 XVA_SET_REQ(&tmp_xvattr, XAT_CREATETIME); 268 269 if ((error = VOP_GETATTR(use_vp, (vattr_t *)&tmp_xvattr, flags, 270 cr, &smb_ct)) != 0) 271 return (error); 272 273 ret_attr->sa_vattr = tmp_xvattr.xva_vattr; 274 275 /* 276 * Copy special attributes to ret_attr parameter 277 */ 278 279 ret_attr->sa_dosattr = 0; 280 281 ASSERT(tmp_xvattr.xva_vattr.va_mask & AT_XVATTR); 282 283 xoap = xva_getxoptattr(&tmp_xvattr); 284 ASSERT(xoap); 285 286 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_READONLY)) { 287 if (xoap->xoa_readonly) 288 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_READONLY; 289 } 290 291 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_HIDDEN)) { 292 if (xoap->xoa_hidden) 293 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_HIDDEN; 294 } 295 296 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_SYSTEM)) { 297 if (xoap->xoa_system) 298 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_SYSTEM; 299 } 300 301 if (XVA_ISSET_RTN(&tmp_xvattr, XAT_ARCHIVE)) { 302 if (xoap->xoa_archive) 303 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_ARCHIVE; 304 } 305 306 ret_attr->sa_crtime = xoap->xoa_createtime; 307 308 if (unnamed_vp && (ret_attr->sa_mask & SMB_AT_SIZE)) { 309 /* 310 * Retrieve stream size attribute into temporary 311 * structure, in case the underlying file system 312 * returns attributes other than the size (we do not 313 * want to have ret_attr's other fields get 314 * overwritten). 315 * 316 * Note that vp is used here, and not use_vp. 317 * Also, only AT_SIZE is needed. 318 */ 319 320 tmp_xvattr.xva_vattr.va_mask = AT_SIZE; 321 322 if ((error = VOP_GETATTR(vp, (vattr_t *)&tmp_xvattr, 323 flags, cr, &smb_ct)) != 0) 324 return (error); 325 326 ret_attr->sa_vattr.va_size = 327 tmp_xvattr.xva_vattr.va_size; 328 329 } 330 331 if (ret_attr->sa_vattr.va_type == VDIR) { 332 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_DIRECTORY; 333 } 334 335 return (error); 336 } 337 338 /* 339 * Support for file systems without VFSFT_XVATTR 340 */ 341 342 smb_sa_to_va_mask(ret_attr->sa_mask, 343 &ret_attr->sa_vattr.va_mask); 344 345 error = VOP_GETATTR(use_vp, &ret_attr->sa_vattr, flags, cr, &smb_ct); 346 347 if (error != 0) 348 return (error); 349 350 /* 351 * "Fake" DOS attributes and create time, filesystem doesn't support 352 * them. 353 */ 354 355 ret_attr->sa_dosattr = 0; 356 ret_attr->sa_crtime = ret_attr->sa_vattr.va_ctime; 357 358 if (unnamed_vp && (ret_attr->sa_mask & SMB_AT_SIZE)) { 359 /* 360 * Retrieve stream size attribute into temporary structure, 361 * in case the underlying file system returns attributes 362 * other than the size (we do not want to have ret_attr's 363 * other fields get overwritten). 364 * 365 * Note that vp is used here, and not use_vp. 366 * Also, only AT_SIZE is needed. 367 */ 368 369 tmp_attr.sa_vattr.va_mask = AT_SIZE; 370 error = VOP_GETATTR(vp, &tmp_attr.sa_vattr, flags, cr, &smb_ct); 371 372 if (error != 0) 373 return (error); 374 375 376 ret_attr->sa_vattr.va_size = tmp_attr.sa_vattr.va_size; 377 } 378 379 if (ret_attr->sa_vattr.va_type == VDIR) { 380 ret_attr->sa_dosattr |= FILE_ATTRIBUTE_DIRECTORY; 381 } 382 383 return (error); 384 } 385 386 /* 387 * smb_vop_setattr() 388 * 389 * smb_fsop_setattr()/smb_vop_setattr() should always be used instead of 390 * VOP_SETATTR() when calling from the CIFS service, due to special processing 391 * for streams files. 392 * 393 * Streams have a size but otherwise do not have separate attributes from 394 * the (unnamed stream) file, i.e., the security and ownership of the file 395 * applies to the stream. In contrast, extended attribute files, which are 396 * used to implement streams, are independent objects with their own 397 * attributes. 398 * 399 * For compatibility with streams, we set the size on the extended attribute 400 * file and apply other attributes to the (unnamed stream) file. The one 401 * exception is that the UID and GID can be set on the stream by passing a 402 * NULL unnamed_vp, which allows callers to synchronize stream ownership 403 * with the (unnamed stream) file. 404 */ 405 406 int 407 smb_vop_setattr(vnode_t *vp, vnode_t *unnamed_vp, smb_attr_t *set_attr, 408 int flags, cred_t *cr, boolean_t no_xvattr) 409 { 410 int error = 0; 411 int at_size = 0; 412 vnode_t *use_vp; 413 xvattr_t xvattr; 414 vattr_t *vap; 415 416 if (unnamed_vp) { 417 use_vp = unnamed_vp; 418 if (set_attr->sa_mask & SMB_AT_SIZE) { 419 at_size = 1; 420 set_attr->sa_mask &= ~SMB_AT_SIZE; 421 } 422 } else { 423 use_vp = vp; 424 } 425 426 /* 427 * The caller should not be setting sa_vattr.va_mask, 428 * but rather sa_mask. 429 */ 430 431 set_attr->sa_vattr.va_mask = 0; 432 433 if ((no_xvattr == B_FALSE) && 434 vfs_has_feature(use_vp->v_vfsp, VFSFT_XVATTR)) { 435 436 smb_vop_setup_xvattr(set_attr, &xvattr); 437 vap = (vattr_t *)&xvattr; 438 } else { 439 smb_sa_to_va_mask(set_attr->sa_mask, 440 &set_attr->sa_vattr.va_mask); 441 vap = &set_attr->sa_vattr; 442 } 443 444 if ((error = VOP_SETATTR(use_vp, vap, flags, cr, &smb_ct)) != 0) 445 return (error); 446 447 /* 448 * If the size of the stream needs to be set, set it on 449 * the stream file directly. (All other indicated attributes 450 * are set on the stream's unnamed stream, except under the 451 * exception described in the function header.) 452 */ 453 454 if (at_size) { 455 /* 456 * set_attr->sa_vattr.va_size already contains the 457 * size as set by the caller 458 * 459 * Note that vp is used here, and not use_vp. 460 * Also, only AT_SIZE is needed. 461 */ 462 463 set_attr->sa_vattr.va_mask = AT_SIZE; 464 error = VOP_SETATTR(vp, &set_attr->sa_vattr, flags, cr, 465 &smb_ct); 466 } 467 468 return (error); 469 } 470 471 /* 472 * smb_vop_access 473 * 474 * This is a wrapper round VOP_ACCESS. VOP_ACCESS checks the given mode 475 * against file's ACL or Unix permissions. CIFS on the other hand needs to 476 * know if the requested operation can succeed for the given object, this 477 * requires more checks in case of DELETE bit since permissions on the parent 478 * directory are important as well. Based on Windows rules if parent's ACL 479 * grant FILE_DELETE_CHILD a file can be delete regardless of the file's 480 * permissions. 481 */ 482 int 483 smb_vop_access(vnode_t *vp, int mode, int flags, vnode_t *dir_vp, cred_t *cr) 484 { 485 int error = 0; 486 487 if (mode == 0) 488 return (0); 489 490 if ((flags == V_ACE_MASK) && (mode & ACE_DELETE)) { 491 if (dir_vp) { 492 error = VOP_ACCESS(dir_vp, ACE_DELETE_CHILD, flags, 493 cr, NULL); 494 495 if (error == 0) 496 mode &= ~ACE_DELETE; 497 } 498 } 499 500 if (mode) { 501 error = VOP_ACCESS(vp, mode, flags, cr, NULL); 502 } 503 504 return (error); 505 } 506 507 /* 508 * smb_vop_lookup 509 * 510 * dvp: directory vnode (in) 511 * name: name of file to be looked up (in) 512 * vpp: looked-up vnode (out) 513 * od_name: on-disk name of file (out). 514 * This parameter is optional. If a pointer is passed in, it 515 * must be allocated with MAXNAMELEN bytes 516 * rootvp: vnode of the tree root (in) 517 * This parameter is always passed in non-NULL except at the time 518 * of share set up. 519 */ 520 521 int 522 smb_vop_lookup( 523 vnode_t *dvp, 524 char *name, 525 vnode_t **vpp, 526 char *od_name, 527 int flags, 528 vnode_t *rootvp, 529 cred_t *cr) 530 { 531 int error = 0; 532 int option_flags = 0; 533 pathname_t rpn; 534 535 if (*name == '\0') 536 return (EINVAL); 537 538 ASSERT(vpp); 539 *vpp = NULL; 540 541 if ((name[0] == '.') && (name[1] == '.') && (name[2] == 0)) { 542 if (rootvp && (dvp == rootvp)) { 543 VN_HOLD(dvp); 544 *vpp = dvp; 545 return (0); 546 } 547 548 if (dvp->v_flag & VROOT) { 549 vfs_t *vfsp; 550 vnode_t *cvp = dvp; 551 552 /* 553 * Set dvp and check for races with forced unmount 554 * (see lookuppnvp()) 555 */ 556 557 vfsp = cvp->v_vfsp; 558 vfs_rlock_wait(vfsp); 559 if (((dvp = cvp->v_vfsp->vfs_vnodecovered) == NULL) || 560 (cvp->v_vfsp->vfs_flag & VFS_UNMOUNTED)) { 561 vfs_unlock(vfsp); 562 return (EIO); 563 } 564 vfs_unlock(vfsp); 565 } 566 } 567 568 569 570 if (flags & SMB_IGNORE_CASE) 571 option_flags = FIGNORECASE; 572 573 pn_alloc(&rpn); 574 575 error = VOP_LOOKUP(dvp, name, vpp, NULL, option_flags, NULL, cr, 576 &smb_ct, NULL, &rpn); 577 578 if ((error == 0) && od_name) { 579 bzero(od_name, MAXNAMELEN); 580 if (option_flags == FIGNORECASE) 581 (void) strlcpy(od_name, rpn.pn_buf, MAXNAMELEN); 582 else 583 (void) strlcpy(od_name, name, MAXNAMELEN); 584 } 585 586 pn_free(&rpn); 587 return (error); 588 } 589 590 int 591 smb_vop_create(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp, 592 int flags, cred_t *cr, vsecattr_t *vsap) 593 { 594 int error; 595 int option_flags = 0; 596 xvattr_t xvattr; 597 vattr_t *vap; 598 599 if (flags & SMB_IGNORE_CASE) 600 option_flags = FIGNORECASE; 601 602 attr->sa_vattr.va_mask = 0; 603 604 if (vfs_has_feature(dvp->v_vfsp, VFSFT_XVATTR)) { 605 smb_vop_setup_xvattr(attr, &xvattr); 606 vap = (vattr_t *)&xvattr; 607 } else { 608 smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask); 609 vap = &attr->sa_vattr; 610 } 611 612 error = VOP_CREATE(dvp, name, vap, EXCL, attr->sa_vattr.va_mode, 613 vpp, cr, option_flags, &smb_ct, vsap); 614 615 return (error); 616 } 617 618 int 619 smb_vop_remove(vnode_t *dvp, char *name, int flags, cred_t *cr) 620 { 621 int error; 622 int option_flags = 0; 623 624 if (flags & SMB_IGNORE_CASE) 625 option_flags = FIGNORECASE; 626 627 error = VOP_REMOVE(dvp, name, cr, &smb_ct, option_flags); 628 629 return (error); 630 } 631 632 /* 633 * smb_vop_rename() 634 * 635 * The rename is for files in the same tree (identical TID) only. 636 */ 637 638 int 639 smb_vop_rename(vnode_t *from_dvp, char *from_name, vnode_t *to_dvp, 640 char *to_name, int flags, cred_t *cr) 641 { 642 int error; 643 int option_flags = 0; 644 645 646 if (flags & SMB_IGNORE_CASE) 647 option_flags = FIGNORECASE; 648 649 error = VOP_RENAME(from_dvp, from_name, to_dvp, to_name, cr, 650 &smb_ct, option_flags); 651 652 return (error); 653 } 654 655 int 656 smb_vop_mkdir(vnode_t *dvp, char *name, smb_attr_t *attr, vnode_t **vpp, 657 int flags, cred_t *cr, vsecattr_t *vsap) 658 { 659 int error; 660 int option_flags = 0; 661 662 663 664 if (flags & SMB_IGNORE_CASE) 665 option_flags = FIGNORECASE; 666 667 smb_sa_to_va_mask(attr->sa_mask, &attr->sa_vattr.va_mask); 668 669 error = VOP_MKDIR(dvp, name, &attr->sa_vattr, vpp, cr, &smb_ct, 670 option_flags, vsap); 671 672 return (error); 673 } 674 675 /* 676 * smb_vop_rmdir() 677 * 678 * Only simple rmdir supported, consistent with NT semantics 679 * (can only remove an empty directory). 680 * 681 */ 682 683 int 684 smb_vop_rmdir(vnode_t *dvp, char *name, int flags, cred_t *cr) 685 { 686 int error; 687 int option_flags = 0; 688 689 if (flags & SMB_IGNORE_CASE) 690 option_flags = FIGNORECASE; 691 692 /* 693 * Comments adapted from rfs_rmdir(). 694 * 695 * VOP_RMDIR now takes a new third argument (the current 696 * directory of the process). That's because rmdir 697 * wants to return EINVAL if one tries to remove ".". 698 * Of course, SMB servers do not know what their 699 * clients' current directories are. We fake it by 700 * supplying a vnode known to exist and illegal to 701 * remove. 702 */ 703 704 error = VOP_RMDIR(dvp, name, rootdir, cr, &smb_ct, option_flags); 705 return (error); 706 } 707 708 int 709 smb_vop_commit(vnode_t *vp, cred_t *cr) 710 { 711 return (VOP_FSYNC(vp, 1, cr, &smb_ct)); 712 } 713 714 void 715 smb_vop_setup_xvattr(smb_attr_t *smb_attr, xvattr_t *xvattr) 716 { 717 xoptattr_t *xoap = NULL; 718 uint_t xva_mask; 719 720 /* 721 * Initialize xvattr, including bzero 722 */ 723 xva_init(xvattr); 724 xoap = xva_getxoptattr(xvattr); 725 726 ASSERT(xoap); 727 728 /* 729 * Copy caller-specified classic attributes to xvattr. 730 * First save xvattr's mask (set in xva_init()), which 731 * contains AT_XVATTR. This is |'d in later if needed. 732 */ 733 734 xva_mask = xvattr->xva_vattr.va_mask; 735 xvattr->xva_vattr = smb_attr->sa_vattr; 736 737 smb_sa_to_va_mask(smb_attr->sa_mask, &xvattr->xva_vattr.va_mask); 738 739 /* 740 * Do not set ctime (only the file system can do it) 741 */ 742 743 xvattr->xva_vattr.va_mask &= ~AT_CTIME; 744 745 if (smb_attr->sa_mask & SMB_AT_DOSATTR) { 746 747 /* 748 * "|" in the original xva_mask, which contains 749 * AT_XVATTR 750 */ 751 752 xvattr->xva_vattr.va_mask |= xva_mask; 753 754 XVA_SET_REQ(xvattr, XAT_ARCHIVE); 755 XVA_SET_REQ(xvattr, XAT_SYSTEM); 756 XVA_SET_REQ(xvattr, XAT_READONLY); 757 XVA_SET_REQ(xvattr, XAT_HIDDEN); 758 759 /* 760 * smb_attr->sa_dosattr: If a given bit is not set, 761 * that indicates that the corresponding field needs 762 * to be updated with a "0" value. This is done 763 * implicitly as the xoap->xoa_* fields were bzero'd. 764 */ 765 766 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_ARCHIVE) 767 xoap->xoa_archive = 1; 768 769 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_SYSTEM) 770 xoap->xoa_system = 1; 771 772 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_READONLY) 773 xoap->xoa_readonly = 1; 774 775 if (smb_attr->sa_dosattr & FILE_ATTRIBUTE_HIDDEN) 776 xoap->xoa_hidden = 1; 777 } 778 779 if (smb_attr->sa_mask & SMB_AT_CRTIME) { 780 /* 781 * "|" in the original xva_mask, which contains 782 * AT_XVATTR 783 */ 784 785 xvattr->xva_vattr.va_mask |= xva_mask; 786 XVA_SET_REQ(xvattr, XAT_CREATETIME); 787 xoap->xoa_createtime = smb_attr->sa_crtime; 788 } 789 } 790 791 792 /* 793 * smb_vop_readdir() 794 * 795 * Upon return, the "name" field will contain either the on-disk name or, if 796 * it needs mangling or has a case-insensitive collision, the mangled 797 * "shortname." 798 * 799 * vpp is an optional parameter. If non-NULL, it will contain a pointer to 800 * the vnode for the name that is looked up (the vnode will be returned held). 801 * 802 * od_name is an optional parameter (NULL can be passed if the on-disk name 803 * is not needed by the caller). 804 */ 805 806 int 807 smb_vop_readdir(vnode_t *dvp, uint32_t *cookiep, char *name, int *namelen, 808 ino64_t *inop, vnode_t **vpp, char *od_name, int flags, cred_t *cr) 809 { 810 int num_bytes; 811 int error = 0; 812 char *dirbuf = NULL; 813 814 ASSERT(dvp); 815 ASSERT(cookiep); 816 ASSERT(name); 817 ASSERT(namelen); 818 ASSERT(inop); 819 ASSERT(cr); 820 821 if (dvp->v_type != VDIR) { 822 *namelen = 0; 823 return (ENOTDIR); 824 } 825 826 if (vpp) 827 *vpp = NULL; 828 829 dirbuf = kmem_zalloc(SMB_MINLEN_RDDIR_BUF, KM_SLEEP); 830 num_bytes = SMB_MINLEN_RDDIR_BUF; 831 832 /* 833 * The goal is to retrieve the first valid entry from *cookiep 834 * forward. smb_vop_readdir_readpage() collects an 835 * SMB_MINLEN_RDDIR_BUF-size "page" of directory entry information. 836 * smb_vop_readdir_entry() attempts to find the first valid entry 837 * in that page. 838 */ 839 840 while ((error = smb_vop_readdir_readpage(dvp, dirbuf, *cookiep, 841 &num_bytes, cr)) == 0) { 842 843 if (num_bytes <= 0) 844 break; 845 846 name[0] = '\0'; 847 848 error = smb_vop_readdir_entry(dvp, cookiep, name, namelen, 849 inop, vpp, od_name, flags, cr, dirbuf, num_bytes); 850 851 if (error) 852 break; 853 854 if (*name) 855 break; 856 857 bzero(dirbuf, SMB_MINLEN_RDDIR_BUF); 858 num_bytes = SMB_MINLEN_RDDIR_BUF; 859 } 860 861 862 if (error) { 863 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 864 *namelen = 0; 865 return (error); 866 } 867 868 if (num_bytes == 0) { /* EOF */ 869 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 870 *cookiep = SMB_EOF; 871 *namelen = 0; 872 return (0); 873 } 874 875 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 876 return (0); 877 } 878 879 /* 880 * smb_vop_readdir_readpage() 881 * 882 * Collects an SMB_MINLEN_RDDIR_BUF "page" of directory entries. (The 883 * directory entries are returned in an fs-independent format by the 884 * underlying file system. That is, the "page" of information returned is 885 * not literally stored on-disk in the format returned.) 886 * 887 * Much of the following is borrowed from getdents64() 888 * 889 * MAXGETDENTS_SIZE is defined in getdents.c 890 */ 891 892 #define MAXGETDENTS_SIZE (64 * 1024) 893 894 static int 895 smb_vop_readdir_readpage(vnode_t *vp, void *buf, uint32_t offset, int *count, 896 cred_t *cr) 897 { 898 int error = 0; 899 int rdirent_flags = 0; 900 int sink; 901 struct uio auio; 902 struct iovec aiov; 903 904 if (vp->v_type != VDIR) 905 return (ENOTDIR); 906 907 if (vfs_has_feature(vp->v_vfsp, VFSFT_DIRENTFLAGS)) { 908 /* 909 * Setting V_RDDIR_ENTFLAGS will cause the buffer to 910 * be filled with edirent_t structures (instead of 911 * dirent64_t structures). 912 */ 913 rdirent_flags = V_RDDIR_ENTFLAGS; 914 915 if (*count < sizeof (edirent_t)) 916 return (EINVAL); 917 } else { 918 if (*count < sizeof (dirent64_t)) 919 return (EINVAL); 920 } 921 922 if (*count > MAXGETDENTS_SIZE) 923 *count = MAXGETDENTS_SIZE; 924 925 aiov.iov_base = buf; 926 aiov.iov_len = *count; 927 auio.uio_iov = &aiov; 928 auio.uio_iovcnt = 1; 929 auio.uio_loffset = (uint64_t)offset; 930 auio.uio_segflg = UIO_SYSSPACE; 931 auio.uio_resid = *count; 932 auio.uio_fmode = 0; 933 934 (void) VOP_RWLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); 935 error = VOP_READDIR(vp, &auio, cr, &sink, &smb_ct, rdirent_flags); 936 VOP_RWUNLOCK(vp, V_WRITELOCK_FALSE, &smb_ct); 937 938 if (error) { 939 if (error == ENOENT) { 940 /* Fake EOF if offset is bad due to dropping of lock */ 941 *count = 0; 942 return (0); 943 } else { 944 return (error); 945 } 946 } 947 948 /* 949 * Windows cannot handle an offset > SMB_EOF. 950 * Pretend we are at EOF. 951 */ 952 953 if (auio.uio_loffset > SMB_EOF) { 954 *count = 0; 955 return (0); 956 } 957 958 *count = *count - auio.uio_resid; 959 return (0); 960 } 961 962 /* 963 * smb_vop_readdir_entry() 964 * 965 * This function retrieves the first valid entry from the 966 * SMB_MINLEN_RDDIR_BUF-sized buffer returned by smb_vop_readdir_readpage() 967 * to smb_vop_readdir(). 968 * 969 * Both dirent64_t and edirent_t structures need to be handled. The former is 970 * needed for file systems that do not support VFSFT_DIRENTFLAGS. The latter 971 * is required for proper handling of case collisions on file systems that 972 * support case-insensitivity. edirent_t structures are also used for 973 * case-sensitive file systems if VFSFT_DIRENTFLAGS is supported. 974 */ 975 976 static int 977 smb_vop_readdir_entry( 978 vnode_t *dvp, 979 uint32_t *cookiep, 980 char *name, 981 int *namelen, 982 ino64_t *inop, 983 vnode_t **vpp, 984 char *od_name, 985 int flags, 986 cred_t *cr, 987 char *dirbuf, 988 int num_bytes) 989 { 990 uint32_t next_cookie; 991 int ebufsize; 992 int error = 0; 993 int len; 994 int rc; 995 char shortname[SMB_SHORTNAMELEN]; 996 char name83[SMB_SHORTNAMELEN]; 997 char *ebuf = NULL; 998 edirent_t *edp; 999 dirent64_t *dp = NULL; 1000 vnode_t *vp = NULL; 1001 1002 ASSERT(dirbuf); 1003 1004 /* 1005 * Use edirent_t structure for both 1006 */ 1007 if (vfs_has_feature(dvp->v_vfsp, VFSFT_DIRENTFLAGS)) { 1008 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1009 edp = (edirent_t *)dirbuf; 1010 } else { 1011 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1012 dp = (dirent64_t *)dirbuf; 1013 ebufsize = EDIRENT_RECLEN(MAXNAMELEN); 1014 ebuf = kmem_zalloc(ebufsize, KM_SLEEP); 1015 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1016 edp = (edirent_t *)ebuf; 1017 } 1018 1019 while (edp) { 1020 if (dp) 1021 DP_TO_EDP(dp, edp); 1022 1023 next_cookie = (uint32_t)edp->ed_off; 1024 if (edp->ed_ino == 0) { 1025 *cookiep = next_cookie; 1026 1027 if (dp) { 1028 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1029 DP_ADVANCE(dp, dirbuf, num_bytes); 1030 if (dp == NULL) 1031 edp = NULL; 1032 } else { 1033 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1034 EDP_ADVANCE(edp, dirbuf, num_bytes); 1035 } 1036 continue; 1037 } 1038 1039 len = strlen(edp->ed_name); 1040 1041 if (*namelen < len) { 1042 *namelen = 0; 1043 1044 if (ebuf) 1045 kmem_free(ebuf, ebufsize); 1046 1047 return (EOVERFLOW); 1048 } 1049 1050 /* 1051 * Do not pass SMB_IGNORE_CASE to smb_vop_lookup 1052 */ 1053 1054 error = smb_vop_lookup(dvp, edp->ed_name, vpp ? vpp : &vp, 1055 od_name, 0, NULL, cr); 1056 1057 if (error) { 1058 if (error == ENOENT) { 1059 *cookiep = (uint32_t)next_cookie; 1060 1061 if (dp) { 1062 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1063 DP_ADVANCE(dp, dirbuf, num_bytes); 1064 if (dp == NULL) 1065 edp = NULL; 1066 } else { 1067 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1068 EDP_ADVANCE(edp, dirbuf, num_bytes); 1069 } 1070 continue; 1071 } 1072 1073 1074 *namelen = 0; 1075 1076 if (ebuf) 1077 kmem_free(ebuf, ebufsize); 1078 1079 return (error); 1080 } 1081 1082 if ((flags & SMB_IGNORE_CASE) && ED_CASE_CONFLICTS(edp)) { 1083 rc = smb_mangle_name(edp->ed_ino, edp->ed_name, 1084 shortname, name83, 1); 1085 1086 if (rc == 1) { /* success */ 1087 (void) strlcpy(name, shortname, *namelen + 1); 1088 *namelen = strlen(shortname); 1089 } else { 1090 (void) strlcpy(name, edp->ed_name, 1091 *namelen + 1); 1092 name[*namelen] = '\0'; 1093 } 1094 1095 } else { 1096 (void) strlcpy(name, edp->ed_name, *namelen + 1); 1097 *namelen = len; 1098 } 1099 1100 if (vpp == NULL) 1101 VN_RELE(vp); 1102 1103 if (inop) 1104 *inop = edp->ed_ino; 1105 1106 *cookiep = (uint32_t)next_cookie; 1107 break; 1108 } 1109 1110 if (ebuf) 1111 kmem_free(ebuf, ebufsize); 1112 1113 return (error); 1114 } 1115 1116 /* 1117 * smb_sa_to_va_mask 1118 * 1119 * Set va_mask by running through the SMB_AT_* #define's and 1120 * setting those bits that correspond to the SMB_AT_* bits 1121 * set in sa_mask. 1122 */ 1123 1124 void 1125 smb_sa_to_va_mask(uint_t sa_mask, uint_t *va_maskp) 1126 { 1127 int i; 1128 uint_t smask; 1129 1130 smask = (sa_mask); 1131 for (i = SMB_AT_TYPE; (i < SMB_AT_MAX) && (smask != 0); ++i) { 1132 if (smask & 1) 1133 *(va_maskp) |= smb_attrmap[i]; 1134 1135 smask >>= 1; 1136 } 1137 } 1138 1139 /* 1140 * smb_vop_getdents() 1141 * 1142 * Upon success, the smb_node corresponding to each entry returned will 1143 * have a reference taken on it. These will be released in 1144 * smb_trans2_find_get_dents(). 1145 * 1146 * If an error is returned from this routine, a list of already processed 1147 * entries will be returned. The smb_nodes corresponding to these entries 1148 * will be referenced, and will be released in smb_trans2_find_get_dents(). 1149 * 1150 * The returned dp->d_name field will contain either the on-disk name or, if 1151 * it needs mangling or has a case-insensitive collision, the mangled 1152 * "shortname." In this case, the on-disk name can be retrieved from the 1153 * smb_node's od_name (the smb_node is passed to smb_gather_dents_info()). 1154 */ 1155 1156 int /*ARGSUSED*/ 1157 smb_vop_getdents( 1158 smb_node_t *dir_snode, 1159 uint32_t *cookiep, 1160 uint64_t *verifierp, 1161 int32_t *dircountp, 1162 char *arg, 1163 char *pattern, 1164 uint32_t flags, 1165 smb_request_t *sr, 1166 cred_t *cr) 1167 { 1168 int error = 0; 1169 int maxentries; 1170 int num_bytes; 1171 int resid; 1172 char *dirbuf = NULL; 1173 vnode_t *dvp; 1174 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1175 smb_dent_info_hdr_t *ihdr = (smb_dent_info_hdr_t *)arg; 1176 1177 dvp = dir_snode->vp; 1178 1179 resid = ihdr->uio.uio_resid; 1180 maxentries = resid / SMB_MAX_DENT_INFO_SIZE; 1181 1182 bzero(ihdr->iov->iov_base, resid); 1183 1184 dirbuf = kmem_alloc(SMB_MINLEN_RDDIR_BUF, KM_SLEEP); 1185 1186 while (maxentries) { 1187 1188 bzero(dirbuf, SMB_MINLEN_RDDIR_BUF); 1189 1190 num_bytes = SMB_MINLEN_RDDIR_BUF; 1191 error = smb_vop_readdir_readpage(dvp, dirbuf, *cookiep, 1192 &num_bytes, cr); 1193 1194 if (error || (num_bytes <= 0)) 1195 break; 1196 1197 error = smb_vop_getdents_entries(dir_snode, cookiep, dircountp, 1198 arg, flags, sr, cr, dirbuf, &maxentries, num_bytes, 1199 pattern); 1200 1201 if (error) 1202 goto out; 1203 } 1204 1205 if (num_bytes < 0) { 1206 error = -1; 1207 } else if (num_bytes == 0) { 1208 *cookiep = SMB_EOF; 1209 error = 0; 1210 } else { 1211 error = 0; 1212 } 1213 1214 out: 1215 if (dirbuf) 1216 kmem_free(dirbuf, SMB_MINLEN_RDDIR_BUF); 1217 1218 return (error); 1219 } 1220 1221 /* 1222 * smb_vop_getdents_entries() 1223 * 1224 * This function retrieves names from the SMB_MINLEN_RDDIR_BUF-sized buffer 1225 * returned by smb_vop_readdir_readpage() to smb_vop_getdents(). 1226 * 1227 * Both dirent64_t and edirent_t structures need to be handled. The former is 1228 * needed for file systems that do not support VFSFT_DIRENTFLAGS. The latter 1229 * is required for properly handling case collisions on file systems that 1230 * support case-insensitivity. edirent_t is also used on case-sensitive 1231 * file systems where VFSFT_DIRENTFLAGS is available. 1232 */ 1233 1234 static int 1235 smb_vop_getdents_entries( 1236 smb_node_t *dir_snode, 1237 uint32_t *cookiep, 1238 int32_t *dircountp, 1239 char *arg, 1240 uint32_t flags, 1241 smb_request_t *sr, 1242 cred_t *cr, 1243 char *dirbuf, 1244 int *maxentries, 1245 int num_bytes, 1246 char *pattern) 1247 { 1248 uint32_t next_cookie; 1249 int ebufsize; 1250 char *tmp_name; 1251 int error; 1252 int rc; 1253 char shortname[SMB_SHORTNAMELEN]; 1254 char name83[SMB_SHORTNAMELEN]; 1255 char *ebuf = NULL; 1256 dirent64_t *dp = NULL; 1257 edirent_t *edp; 1258 smb_node_t *ret_snode; 1259 smb_attr_t ret_attr; 1260 vnode_t *dvp; 1261 vnode_t *fvp; 1262 1263 ASSERT(dirbuf); 1264 1265 dvp = dir_snode->vp; 1266 1267 if (vfs_has_feature(dvp->v_vfsp, VFSFT_DIRENTFLAGS)) { 1268 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1269 edp = (edirent_t *)dirbuf; 1270 } else { 1271 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1272 dp = (dirent64_t *)dirbuf; 1273 ebufsize = EDIRENT_RECLEN(MAXNAMELEN); 1274 ebuf = kmem_zalloc(ebufsize, KM_SLEEP); 1275 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1276 edp = (edirent_t *)ebuf; 1277 } 1278 1279 while (edp) { 1280 if (dp) 1281 DP_TO_EDP(dp, edp); 1282 1283 if (*maxentries == 0) 1284 break; 1285 1286 next_cookie = (uint32_t)edp->ed_off; 1287 1288 if (edp->ed_ino == 0) { 1289 *cookiep = next_cookie; 1290 if (dp) { 1291 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1292 DP_ADVANCE(dp, dirbuf, num_bytes); 1293 if (dp == NULL) 1294 edp = NULL; 1295 } else { 1296 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1297 EDP_ADVANCE(edp, dirbuf, num_bytes); 1298 } 1299 continue; 1300 } 1301 1302 error = smb_vop_lookup(dvp, edp->ed_name, &fvp, 1303 NULL, 0, NULL, cr); 1304 1305 if (error) { 1306 if (error == ENOENT) { 1307 *cookiep = next_cookie; 1308 if (dp) { 1309 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1310 DP_ADVANCE(dp, dirbuf, 1311 num_bytes); 1312 if (dp == NULL) 1313 edp = NULL; 1314 } else { 1315 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1316 EDP_ADVANCE(edp, dirbuf, 1317 num_bytes); 1318 } 1319 continue; 1320 } 1321 if (ebuf) 1322 kmem_free(ebuf, ebufsize); 1323 1324 return (error); 1325 } 1326 1327 ret_snode = smb_node_lookup(sr, NULL, cr, fvp, 1328 edp->ed_name, dir_snode, NULL, &ret_attr); 1329 1330 if (ret_snode == NULL) { 1331 VN_RELE(fvp); 1332 1333 if (ebuf) 1334 kmem_free(ebuf, ebufsize); 1335 1336 return (ENOMEM); 1337 } 1338 1339 if (smb_match_name(edp->ed_ino, edp->ed_name, shortname, 1340 name83, pattern, (flags & SMB_IGNORE_CASE))) { 1341 1342 tmp_name = edp->ed_name; 1343 1344 if ((flags & SMB_IGNORE_CASE) && 1345 ED_CASE_CONFLICTS(edp)) { 1346 rc = smb_mangle_name(edp->ed_ino, edp->ed_name, 1347 shortname, name83, 1); 1348 if (rc == 1) 1349 tmp_name = shortname; 1350 } else { 1351 rc = smb_mangle_name(edp->ed_ino, edp->ed_name, 1352 shortname, name83, 0); 1353 } 1354 1355 if (rc != 1) { 1356 (void) strlcpy(shortname, edp->ed_name, 1357 SMB_SHORTNAMELEN); 1358 (void) strlcpy(name83, edp->ed_name, 1359 SMB_SHORTNAMELEN); 1360 shortname[SMB_SHORTNAMELEN - 1] = '\0'; 1361 name83[SMB_SHORTNAMELEN - 1] = '\0'; 1362 } 1363 1364 error = smb_gather_dents_info(arg, edp->ed_ino, 1365 strlen(tmp_name), tmp_name, next_cookie, dircountp, 1366 &ret_attr, ret_snode, shortname, name83); 1367 1368 if (error > 0) { 1369 if (ebuf) 1370 kmem_free(ebuf, ebufsize); 1371 return (error); 1372 } 1373 1374 /* 1375 * Treat errors from smb_gather_dents_info() that are 1376 * < 0 the same as EOF. 1377 */ 1378 if (error < 0) { 1379 if (ebuf) 1380 kmem_free(ebuf, ebufsize); 1381 *maxentries = 0; 1382 return (0); 1383 } 1384 (*maxentries)--; 1385 } else { 1386 smb_node_release(ret_snode); 1387 } 1388 1389 *cookiep = next_cookie; 1390 1391 if (dp) { 1392 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1393 DP_ADVANCE(dp, dirbuf, num_bytes); 1394 if (dp == NULL) 1395 edp = NULL; 1396 } else { 1397 /*LINTED E_BAD_PTR_CAST_ALIGN*/ 1398 EDP_ADVANCE(edp, dirbuf, num_bytes); 1399 } 1400 } 1401 1402 if (ebuf) 1403 kmem_free(ebuf, ebufsize); 1404 1405 return (0); 1406 } 1407 1408 /* 1409 * smb_vop_stream_lookup() 1410 * 1411 * The name returned in od_name is the on-disk name of the stream with the 1412 * SMB_STREAM_PREFIX stripped off. od_name should be allocated to MAXNAMELEN 1413 * by the caller. 1414 */ 1415 1416 int 1417 smb_vop_stream_lookup( 1418 vnode_t *fvp, 1419 char *stream_name, 1420 vnode_t **vpp, 1421 char *od_name, 1422 vnode_t **xattrdirvpp, 1423 int flags, 1424 vnode_t *rootvp, 1425 cred_t *cr) 1426 { 1427 char *solaris_stream_name; 1428 char *name; 1429 int error; 1430 1431 if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp, 1432 LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0) 1433 return (error); 1434 1435 /* 1436 * Prepend SMB_STREAM_PREFIX to stream name 1437 */ 1438 1439 solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); 1440 (void) sprintf(solaris_stream_name, "%s%s", SMB_STREAM_PREFIX, 1441 stream_name); 1442 1443 /* 1444 * "name" will hold the on-disk name returned from smb_vop_lookup 1445 * for the stream, including the SMB_STREAM_PREFIX. 1446 */ 1447 1448 name = kmem_zalloc(MAXNAMELEN, KM_SLEEP); 1449 1450 if ((error = smb_vop_lookup(*xattrdirvpp, solaris_stream_name, vpp, 1451 name, flags, rootvp, cr)) != 0) { 1452 VN_RELE(*xattrdirvpp); 1453 } else { 1454 (void) strlcpy(od_name, &(name[SMB_STREAM_PREFIX_LEN]), 1455 MAXNAMELEN); 1456 } 1457 1458 kmem_free(solaris_stream_name, MAXNAMELEN); 1459 kmem_free(name, MAXNAMELEN); 1460 1461 return (error); 1462 } 1463 1464 int 1465 smb_vop_stream_create(vnode_t *fvp, char *stream_name, smb_attr_t *attr, 1466 vnode_t **vpp, vnode_t **xattrdirvpp, int flags, cred_t *cr) 1467 { 1468 char *solaris_stream_name; 1469 int error; 1470 1471 if ((error = smb_vop_lookup_xattrdir(fvp, xattrdirvpp, 1472 LOOKUP_XATTR | CREATE_XATTR_DIR, cr)) != 0) 1473 return (error); 1474 1475 /* 1476 * Prepend SMB_STREAM_PREFIX to stream name 1477 */ 1478 1479 solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); 1480 (void) sprintf(solaris_stream_name, "%s%s", SMB_STREAM_PREFIX, 1481 stream_name); 1482 1483 if ((error = smb_vop_create(*xattrdirvpp, solaris_stream_name, attr, 1484 vpp, flags, cr, NULL)) != 0) 1485 VN_RELE(*xattrdirvpp); 1486 1487 kmem_free(solaris_stream_name, MAXNAMELEN); 1488 1489 return (error); 1490 } 1491 1492 int 1493 smb_vop_stream_remove(vnode_t *vp, char *stream_name, int flags, cred_t *cr) 1494 { 1495 char *solaris_stream_name; 1496 vnode_t *xattrdirvp; 1497 int error; 1498 1499 error = smb_vop_lookup_xattrdir(vp, &xattrdirvp, LOOKUP_XATTR, cr); 1500 if (error != 0) 1501 return (error); 1502 1503 /* 1504 * Prepend SMB_STREAM_PREFIX to stream name 1505 */ 1506 1507 solaris_stream_name = kmem_alloc(MAXNAMELEN, KM_SLEEP); 1508 (void) sprintf(solaris_stream_name, "%s%s", SMB_STREAM_PREFIX, 1509 stream_name); 1510 1511 /* XXX might have to use kcred */ 1512 error = smb_vop_remove(xattrdirvp, solaris_stream_name, flags, cr); 1513 1514 kmem_free(solaris_stream_name, MAXNAMELEN); 1515 1516 return (error); 1517 } 1518 1519 /* 1520 * smb_vop_stream_readdir() 1521 * 1522 * Note: stream_info.size is not filled in in this routine. 1523 * It needs to be filled in by the caller due to the parameters for getattr. 1524 * 1525 * stream_info.name is set to the on-disk stream name with the SMB_STREAM_PREFIX 1526 * removed. 1527 */ 1528 1529 int 1530 smb_vop_stream_readdir(vnode_t *fvp, uint32_t *cookiep, 1531 struct fs_stream_info *stream_info, vnode_t **vpp, vnode_t **xattrdirvpp, 1532 int flags, cred_t *cr) 1533 { 1534 int nsize; 1535 int error = 0; 1536 ino64_t ino; 1537 char *tmp_name; 1538 vnode_t *xattrdirvp; 1539 vnode_t *vp; 1540 1541 if ((error = smb_vop_lookup_xattrdir(fvp, &xattrdirvp, LOOKUP_XATTR, 1542 cr)) != 0) 1543 return (error); 1544 1545 bzero(stream_info->name, sizeof (stream_info->name)); 1546 stream_info->size = 0; 1547 1548 tmp_name = kmem_zalloc(MAXNAMELEN, KM_SLEEP); 1549 1550 for (;;) { 1551 nsize = MAXNAMELEN-1; 1552 error = smb_vop_readdir(xattrdirvp, cookiep, tmp_name, &nsize, 1553 &ino, &vp, NULL, flags, cr); 1554 1555 if (error || (*cookiep == SMB_EOF)) 1556 break; 1557 1558 if (strncmp(tmp_name, SMB_STREAM_PREFIX, 1559 SMB_STREAM_PREFIX_LEN)) { 1560 VN_RELE(vp); 1561 continue; 1562 } 1563 1564 tmp_name[nsize] = '\0'; 1565 (void) strlcpy(stream_info->name, 1566 &(tmp_name[SMB_STREAM_PREFIX_LEN]), 1567 sizeof (stream_info->name)); 1568 1569 nsize -= SMB_STREAM_PREFIX_LEN; 1570 break; 1571 } 1572 1573 if ((error == 0) && nsize) { 1574 if (vpp) 1575 *vpp = vp; 1576 else 1577 VN_RELE(vp); 1578 1579 if (xattrdirvpp) 1580 *xattrdirvpp = xattrdirvp; 1581 else 1582 VN_RELE(xattrdirvp); 1583 1584 } else { 1585 VN_RELE(xattrdirvp); 1586 } 1587 1588 kmem_free(tmp_name, MAXNAMELEN); 1589 1590 return (error); 1591 } 1592 1593 int 1594 smb_vop_lookup_xattrdir(vnode_t *fvp, vnode_t **xattrdirvpp, int flags, 1595 cred_t *cr) 1596 { 1597 int error; 1598 1599 error = VOP_LOOKUP(fvp, "", xattrdirvpp, NULL, flags, NULL, cr, 1600 &smb_ct, NULL, NULL); 1601 return (error); 1602 } 1603 1604 /* 1605 * smb_vop_traverse_check() 1606 * 1607 * This function checks to see if the passed-in vnode has a file system 1608 * mounted on it. If it does, the mount point is "traversed" and the 1609 * vnode for the root of the file system is returned. 1610 */ 1611 1612 int 1613 smb_vop_traverse_check(vnode_t **vpp) 1614 { 1615 int error; 1616 1617 if (vn_mountedvfs(*vpp) == 0) 1618 return (0); 1619 1620 /* 1621 * traverse() may return a different held vnode, even in the error case. 1622 * If it returns a different vnode, it will have released the original. 1623 */ 1624 1625 error = traverse(vpp); 1626 1627 return (error); 1628 } 1629 1630 int /*ARGSUSED*/ 1631 smb_vop_statfs(vnode_t *vp, struct statvfs64 *statp, cred_t *cr) 1632 { 1633 int error; 1634 1635 error = VFS_STATVFS(vp->v_vfsp, statp); 1636 1637 return (error); 1638 } 1639 1640 /* 1641 * smb_vop_acl_read 1642 * 1643 * Reads the ACL of the specified file into 'aclp'. 1644 * acl_type is the type of ACL which the filesystem supports. 1645 * 1646 * Caller has to free the allocated memory for aclp by calling 1647 * acl_free(). 1648 */ 1649 int 1650 smb_vop_acl_read(vnode_t *vp, acl_t **aclp, int flags, acl_type_t acl_type, 1651 cred_t *cr) 1652 { 1653 int error; 1654 vsecattr_t vsecattr; 1655 1656 ASSERT(vp); 1657 ASSERT(aclp); 1658 1659 *aclp = NULL; 1660 bzero(&vsecattr, sizeof (vsecattr_t)); 1661 1662 switch (acl_type) { 1663 case ACLENT_T: 1664 vsecattr.vsa_mask = VSA_ACL | VSA_ACLCNT | VSA_DFACL | 1665 VSA_DFACLCNT; 1666 break; 1667 1668 case ACE_T: 1669 vsecattr.vsa_mask = VSA_ACE | VSA_ACECNT | VSA_ACE_ACLFLAGS; 1670 break; 1671 1672 default: 1673 return (EINVAL); 1674 } 1675 1676 if (error = VOP_GETSECATTR(vp, &vsecattr, flags, cr, &smb_ct)) 1677 return (error); 1678 1679 *aclp = smb_fsacl_from_vsa(&vsecattr, acl_type); 1680 if (vp->v_type == VDIR) 1681 (*aclp)->acl_flags |= ACL_IS_DIR; 1682 1683 return (0); 1684 } 1685 1686 /* 1687 * smb_vop_acl_write 1688 * 1689 * Writes the given ACL in aclp for the specified file. 1690 */ 1691 int 1692 smb_vop_acl_write(vnode_t *vp, acl_t *aclp, int flags, cred_t *cr) 1693 { 1694 int error; 1695 vsecattr_t vsecattr; 1696 int aclbsize; 1697 1698 ASSERT(vp); 1699 ASSERT(aclp); 1700 1701 error = smb_fsacl_to_vsa(aclp, &vsecattr, &aclbsize); 1702 1703 if (error == 0) { 1704 (void) VOP_RWLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 1705 error = VOP_SETSECATTR(vp, &vsecattr, flags, cr, &smb_ct); 1706 VOP_RWUNLOCK(vp, V_WRITELOCK_TRUE, &smb_ct); 1707 } 1708 1709 if (aclbsize && vsecattr.vsa_aclentp) 1710 kmem_free(vsecattr.vsa_aclentp, aclbsize); 1711 1712 return (error); 1713 } 1714 1715 /* 1716 * smb_vop_acl_type 1717 * 1718 * Determines the ACL type for the given vnode. 1719 * ACLENT_T is a Posix ACL and ACE_T is a ZFS ACL. 1720 */ 1721 acl_type_t 1722 smb_vop_acl_type(vnode_t *vp) 1723 { 1724 int error; 1725 ulong_t whichacl; 1726 1727 error = VOP_PATHCONF(vp, _PC_ACL_ENABLED, &whichacl, kcred, NULL); 1728 if (error != 0) { 1729 /* 1730 * If we got an error, then the filesystem 1731 * likely does not understand the _PC_ACL_ENABLED 1732 * pathconf. In this case, we fall back to trying 1733 * POSIX-draft (aka UFS-style) ACLs. 1734 */ 1735 whichacl = _ACL_ACLENT_ENABLED; 1736 } 1737 1738 if (!(whichacl & (_ACL_ACE_ENABLED | _ACL_ACLENT_ENABLED))) { 1739 /* 1740 * If the file system supports neither ACE nor 1741 * ACLENT ACLs we will fall back to UFS-style ACLs 1742 * like we did above if there was an error upon 1743 * calling VOP_PATHCONF. 1744 * 1745 * ACE and ACLENT type ACLs are the only interfaces 1746 * supported thus far. If any other bits are set on 1747 * 'whichacl' upon return from VOP_PATHCONF, we will 1748 * ignore them. 1749 */ 1750 whichacl = _ACL_ACLENT_ENABLED; 1751 } 1752 1753 if (whichacl == _ACL_ACLENT_ENABLED) 1754 return (ACLENT_T); 1755 1756 return (ACE_T); 1757 } 1758 1759 static int zfs_perms[] = { 1760 ACE_READ_DATA, ACE_WRITE_DATA, ACE_APPEND_DATA, ACE_READ_NAMED_ATTRS, 1761 ACE_WRITE_NAMED_ATTRS, ACE_EXECUTE, ACE_DELETE_CHILD, 1762 ACE_READ_ATTRIBUTES, ACE_WRITE_ATTRIBUTES, ACE_DELETE, ACE_READ_ACL, 1763 ACE_WRITE_ACL, ACE_WRITE_OWNER, ACE_SYNCHRONIZE 1764 }; 1765 1766 static int unix_perms[] = { VREAD, VWRITE, VEXEC }; 1767 /* 1768 * smb_vop_eaccess 1769 * 1770 * Returns the effective permission of the given credential for the 1771 * specified object. 1772 * 1773 * This is just a workaround. We need VFS/FS support for this. 1774 */ 1775 void 1776 smb_vop_eaccess(vnode_t *vp, int *mode, int flags, vnode_t *dir_vp, cred_t *cr) 1777 { 1778 int error, i; 1779 int pnum; 1780 1781 *mode = 0; 1782 1783 if (flags == V_ACE_MASK) { 1784 pnum = sizeof (zfs_perms) / sizeof (int); 1785 1786 for (i = 0; i < pnum; i++) { 1787 error = smb_vop_access(vp, zfs_perms[i], flags, 1788 dir_vp, cr); 1789 if (error == 0) 1790 *mode |= zfs_perms[i]; 1791 } 1792 } else { 1793 pnum = sizeof (unix_perms) / sizeof (int); 1794 1795 for (i = 0; i < pnum; i++) { 1796 error = smb_vop_access(vp, unix_perms[i], flags, 1797 dir_vp, cr); 1798 if (error == 0) 1799 *mode |= unix_perms[i]; 1800 } 1801 } 1802 } 1803 1804 /* 1805 * smb_vop_shrlock() 1806 * 1807 * See comments for smb_fsop_shrlock() 1808 */ 1809 1810 int 1811 smb_vop_shrlock(vnode_t *vp, uint32_t uniq_fid, uint32_t desired_access, 1812 uint32_t share_access, cred_t *cr) 1813 { 1814 struct shrlock shr; 1815 struct shr_locowner shr_own; 1816 short new_access = 0; 1817 short deny = 0; 1818 int flag = 0; 1819 int cmd; 1820 1821 cmd = (nbl_need_check(vp)) ? F_SHARE_NBMAND : F_SHARE; 1822 1823 /* 1824 * Check if this is a metadata access 1825 */ 1826 1827 if ((desired_access & FILE_DATA_ALL) == 0) { 1828 new_access |= F_MDACC; 1829 } else { 1830 if (desired_access & (ACE_READ_DATA | ACE_EXECUTE)) { 1831 new_access |= F_RDACC; 1832 flag |= FREAD; 1833 } 1834 1835 if (desired_access & (ACE_WRITE_DATA | ACE_APPEND_DATA | 1836 ACE_ADD_FILE)) { 1837 new_access |= F_WRACC; 1838 flag |= FWRITE; 1839 } 1840 1841 if (SMB_DENY_READ(share_access)) { 1842 deny |= F_RDDNY; 1843 } 1844 1845 if (SMB_DENY_WRITE(share_access)) { 1846 deny |= F_WRDNY; 1847 } 1848 1849 if (cmd == F_SHARE_NBMAND) { 1850 if (desired_access & ACE_DELETE) 1851 new_access |= F_RMACC; 1852 1853 if (SMB_DENY_DELETE(share_access)) { 1854 deny |= F_RMDNY; 1855 } 1856 } 1857 } 1858 1859 shr.s_access = new_access; 1860 shr.s_deny = deny; 1861 shr.s_sysid = smb_ct.cc_sysid; 1862 shr.s_pid = uniq_fid; 1863 shr.s_own_len = sizeof (shr_own); 1864 shr.s_owner = (caddr_t)&shr_own; 1865 shr_own.sl_id = shr.s_sysid; 1866 shr_own.sl_pid = shr.s_pid; 1867 1868 return (VOP_SHRLOCK(vp, cmd, &shr, flag, cr, NULL)); 1869 } 1870 1871 int 1872 smb_vop_unshrlock(vnode_t *vp, uint32_t uniq_fid, cred_t *cr) 1873 { 1874 struct shrlock shr; 1875 struct shr_locowner shr_own; 1876 1877 /* 1878 * For s_access and s_deny, we do not need to pass in the original 1879 * values. 1880 */ 1881 1882 shr.s_access = 0; 1883 shr.s_deny = 0; 1884 shr.s_sysid = smb_ct.cc_sysid; 1885 shr.s_pid = uniq_fid; 1886 shr.s_own_len = sizeof (shr_own); 1887 shr.s_owner = (caddr_t)&shr_own; 1888 shr_own.sl_id = shr.s_sysid; 1889 shr_own.sl_pid = shr.s_pid; 1890 1891 return (VOP_SHRLOCK(vp, F_UNSHARE, &shr, 0, cr, NULL)); 1892 } 1893 1894 int 1895 smb_vop_frlock(vnode_t *vp, cred_t *cr, int flag, flock64_t *bf) 1896 { 1897 int cmd = nbl_need_check(vp) ? F_SETLK_NBMAND : F_SETLK; 1898 flk_callback_t flk_cb; 1899 1900 flk_init_callback(&flk_cb, smb_lock_frlock_callback, NULL); 1901 1902 return (VOP_FRLOCK(vp, cmd, bf, flag, 0, &flk_cb, cr, &smb_ct)); 1903 } 1904 1905 static callb_cpr_t * 1906 /* ARGSUSED */ 1907 smb_lock_frlock_callback(flk_cb_when_t when, void *error) 1908 { 1909 return (0); 1910 } 1911