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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2015 Nexenta Systems, Inc. All rights reserved.
24 */
25
26 #include <sys/sid.h>
27 #include <sys/nbmlock.h>
28 #include <smbsrv/smb_fsops.h>
29 #include <smbsrv/smb_kproto.h>
30 #include <acl/acl_common.h>
31 #include <sys/fcntl.h>
32 #include <sys/flock.h>
33 #include <fs/fs_subr.h>
34
35 extern caller_context_t smb_ct;
36
37 static int smb_fsop_create_stream(smb_request_t *, cred_t *, smb_node_t *,
38 char *, char *, int, smb_attr_t *, smb_node_t **);
39
40 static int smb_fsop_create_file(smb_request_t *, cred_t *, smb_node_t *,
41 char *, int, smb_attr_t *, smb_node_t **);
42
43 #ifdef _KERNEL
44 static int smb_fsop_create_with_sd(smb_request_t *, cred_t *, smb_node_t *,
45 char *, smb_attr_t *, smb_node_t **, smb_fssd_t *);
46 static int smb_fsop_sdinherit(smb_request_t *, smb_node_t *, smb_fssd_t *);
47 #endif /* _KERNEL */
48
49 /*
50 * The smb_fsop_* functions have knowledge of CIFS semantics.
51 *
52 * The smb_vop_* functions have minimal knowledge of CIFS semantics and
53 * serve as an interface to the VFS layer.
54 *
55 * Hence, smb_request_t and smb_node_t structures should not be passed
56 * from the smb_fsop_* layer to the smb_vop_* layer.
57 *
58 * In general, CIFS service code should only ever call smb_fsop_*
116 {
117 smb_vop_close(node->vp, mode, cred);
118 }
119
120 #ifdef _KERNEL
121 static int
122 smb_fsop_create_with_sd(smb_request_t *sr, cred_t *cr,
123 smb_node_t *dnode, char *name,
124 smb_attr_t *attr, smb_node_t **ret_snode, smb_fssd_t *fs_sd)
125 {
126 vsecattr_t *vsap;
127 vsecattr_t vsecattr;
128 smb_attr_t set_attr;
129 acl_t *acl, *dacl, *sacl;
130 vnode_t *vp;
131 cred_t *kcr = zone_kcred();
132 int aclbsize = 0; /* size of acl list in bytes */
133 int flags = 0;
134 int rc;
135 boolean_t is_dir;
136
137 ASSERT(fs_sd);
138
139 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
140 flags = SMB_IGNORE_CASE;
141 if (SMB_TREE_SUPPORTS_CATIA(sr))
142 flags |= SMB_CATIA;
143
144 ASSERT(cr);
145
146 is_dir = ((fs_sd->sd_flags & SMB_FSSD_FLAGS_DIR) != 0);
147
148 if (smb_tree_has_feature(sr->tid_tree, SMB_TREE_ACLONCREATE)) {
149 if (fs_sd->sd_secinfo & SMB_ACL_SECINFO) {
150 dacl = fs_sd->sd_zdacl;
151 sacl = fs_sd->sd_zsacl;
152 ASSERT(dacl || sacl);
153 if (dacl && sacl) {
154 acl = smb_fsacl_merge(dacl, sacl);
155 } else if (dacl) {
156 acl = dacl;
157 } else {
158 acl = sacl;
159 }
160
161 rc = smb_fsacl_to_vsa(acl, &vsecattr, &aclbsize);
162
163 if (dacl && sacl)
164 acl_free(acl);
165
166 if (rc != 0)
167 return (rc);
168
169 vsap = &vsecattr;
170 } else {
171 vsap = NULL;
172 }
173
174 /* The tree ACEs may prevent a create */
175 rc = EACCES;
176 if (is_dir) {
177 if (SMB_TREE_HAS_ACCESS(sr, ACE_ADD_SUBDIRECTORY) != 0)
178 rc = smb_vop_mkdir(dnode->vp, name, attr,
179 &vp, flags, cr, vsap);
180 } else {
181 if (SMB_TREE_HAS_ACCESS(sr, ACE_ADD_FILE) != 0)
182 rc = smb_vop_create(dnode->vp, name, attr,
183 &vp, flags, cr, vsap);
184 }
185
186 if (vsap != NULL)
187 kmem_free(vsap->vsa_aclentp, aclbsize);
188
189 if (rc != 0)
190 return (rc);
191
192 set_attr.sa_mask = 0;
193
194 /*
195 * Ideally we should be able to specify the owner and owning
196 * group at create time along with the ACL. Since we cannot
197 * do that right now, kcred is passed to smb_vop_setattr so it
198 * doesn't fail due to lack of permission.
199 */
200 if (fs_sd->sd_secinfo & SMB_OWNER_SECINFO) {
201 set_attr.sa_vattr.va_uid = fs_sd->sd_uid;
202 set_attr.sa_mask |= SMB_AT_UID;
203 }
204
205 if (fs_sd->sd_secinfo & SMB_GROUP_SECINFO) {
220 VN_RELE(vp);
221 }
222 } else {
223 /*
224 * For filesystems that don't support ACL-on-create, try
225 * to set the specified SD after create, which could actually
226 * fail because of conflicts between inherited security
227 * attributes upon creation and the specified SD.
228 *
229 * Passing kcred to smb_fsop_sdwrite() to overcome this issue.
230 */
231
232 if (is_dir) {
233 rc = smb_vop_mkdir(dnode->vp, name, attr, &vp,
234 flags, cr, NULL);
235 } else {
236 rc = smb_vop_create(dnode->vp, name, attr, &vp,
237 flags, cr, NULL);
238 }
239
240 if (rc != 0)
241 return (rc);
242
243 *ret_snode = smb_node_lookup(sr, &sr->arg.open, cr, vp,
244 name, dnode, NULL);
245
246 if (*ret_snode != NULL) {
247 if (!smb_tree_has_feature(sr->tid_tree,
248 SMB_TREE_NFS_MOUNTED))
249 rc = smb_fsop_sdwrite(sr, kcr, *ret_snode,
250 fs_sd, 1);
251 } else {
252 rc = ENOMEM;
253 }
254
255 VN_RELE(vp);
256 }
257
258 if (rc != 0) {
259 if (is_dir)
302 ASSERT(sr->tid_tree);
303
304 if (SMB_TREE_CONTAINS_NODE(sr, dnode) == 0)
305 return (EACCES);
306
307 if (SMB_TREE_IS_READONLY(sr))
308 return (EROFS);
309
310 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
311 flags = SMB_IGNORE_CASE;
312 if (SMB_TREE_SUPPORTS_CATIA(sr))
313 flags |= SMB_CATIA;
314 if (SMB_TREE_SUPPORTS_ABE(sr))
315 flags |= SMB_ABE;
316
317 if (smb_is_stream_name(name)) {
318 fname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
319 sname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
320 smb_stream_parse_name(name, fname, sname);
321
322 rc = smb_fsop_create_stream(sr, cr, dnode,
323 fname, sname, flags, attr, ret_snode);
324
325 kmem_free(fname, MAXNAMELEN);
326 kmem_free(sname, MAXNAMELEN);
327 return (rc);
328 }
329
330 /* Not a named stream */
331
332 if (SMB_TREE_SUPPORTS_SHORTNAMES(sr) && smb_maybe_mangled(name)) {
333 longname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
334 rc = smb_unmangle(dnode, name, longname, MAXNAMELEN, flags);
335 kmem_free(longname, MAXNAMELEN);
336
337 if (rc == 0)
338 rc = EEXIST;
339 if (rc != ENOENT)
340 return (rc);
341 }
342
343 rc = smb_fsop_create_file(sr, cr, dnode, name, flags,
344 attr, ret_snode);
345 return (rc);
346
347 }
348
349
350 /*
351 * smb_fsop_create_stream
352 *
353 * Create NTFS named stream file (sname) on unnamed stream
354 * file (fname), creating the unnamed stream file if it
355 * doesn't exist.
356 * If we created the unnamed stream file and then creation
357 * of the named stream file fails, we delete the unnamed stream.
358 * Since we use the real file name for the smb_vop_remove we
359 * clear the SMB_IGNORE_CASE flag to ensure a case sensitive
360 * match.
361 *
362 * The second parameter of smb_vop_setattr() is set to
363 * NULL, even though an unnamed stream exists. This is
364 * because we want to set the UID and GID on the named
365 * stream in this case for consistency with the (unnamed
366 * stream) file (see comments for smb_vop_setattr()).
367 */
368 static int
369 smb_fsop_create_stream(smb_request_t *sr, cred_t *cr,
370 smb_node_t *dnode, char *fname, char *sname, int flags,
371 smb_attr_t *attr, smb_node_t **ret_snode)
372 {
373 smb_attr_t fattr;
374 smb_node_t *fnode;
375 vnode_t *xattrdvp;
376 vnode_t *vp;
377 cred_t *kcr = zone_kcred();
378 int rc = 0;
379 boolean_t fcreate = B_FALSE;
380
381 /* Look up / create the unnamed stream, fname */
382 rc = smb_fsop_lookup(sr, cr, flags | SMB_FOLLOW_LINKS,
383 sr->tid_tree->t_snode, dnode, fname, &fnode);
384 if (rc == ENOENT) {
385 fcreate = B_TRUE;
386 rc = smb_fsop_create_file(sr, cr, dnode, fname, flags,
387 attr, &fnode);
388 }
389 if (rc != 0)
390 return (rc);
391
392 fattr.sa_mask = SMB_AT_UID | SMB_AT_GID;
393 rc = smb_vop_getattr(fnode->vp, NULL, &fattr, 0, kcr);
394
395 if (rc == 0) {
396 /* create the named stream, sname */
397 rc = smb_vop_stream_create(fnode->vp, sname, attr,
398 &vp, &xattrdvp, flags, cr);
399 }
400 if (rc != 0) {
401 if (fcreate) {
402 flags &= ~SMB_IGNORE_CASE;
403 (void) smb_vop_remove(dnode->vp,
404 fnode->od_name, flags, cr);
405 }
406 smb_node_release(fnode);
407 return (rc);
408 }
409
410 attr->sa_vattr.va_uid = fattr.sa_vattr.va_uid;
411 attr->sa_vattr.va_gid = fattr.sa_vattr.va_gid;
412 attr->sa_mask = SMB_AT_UID | SMB_AT_GID;
413
414 rc = smb_vop_setattr(vp, NULL, attr, 0, kcr);
415 if (rc != 0) {
416 smb_node_release(fnode);
417 return (rc);
418 }
419
420 *ret_snode = smb_stream_node_lookup(sr, cr, fnode, xattrdvp,
421 vp, sname);
422
423 smb_node_release(fnode);
424 VN_RELE(xattrdvp);
425 VN_RELE(vp);
426
427 if (*ret_snode == NULL)
428 rc = ENOMEM;
429
430 /* notify change to the unnamed stream */
431 if (rc == 0)
432 smb_node_notify_change(dnode,
433 FILE_ACTION_ADDED_STREAM, fname);
434
435 return (rc);
436 }
437
438 /*
439 * smb_fsop_create_file
440 */
441 static int
442 smb_fsop_create_file(smb_request_t *sr, cred_t *cr,
443 smb_node_t *dnode, char *name, int flags,
444 smb_attr_t *attr, smb_node_t **ret_snode)
445 {
446 smb_arg_open_t *op = &sr->sr_open;
447 vnode_t *vp;
448 int rc;
449
450 #ifdef _KERNEL
451 smb_fssd_t fs_sd;
452 uint32_t secinfo;
453 uint32_t status;
454
455 if (op->sd) {
456 /*
457 * SD sent by client in Windows format. Needs to be
458 * converted to FS format. No inheritance.
459 */
460 secinfo = smb_sd_get_secinfo(op->sd);
461 smb_fssd_init(&fs_sd, secinfo, 0);
462
463 status = smb_sd_tofs(op->sd, &fs_sd);
464 if (status == NT_STATUS_SUCCESS) {
465 rc = smb_fsop_create_with_sd(sr, cr, dnode,
466 name, attr, ret_snode, &fs_sd);
467 } else {
468 rc = EINVAL;
469 }
471 } else if (sr->tid_tree->t_acltype == ACE_T) {
472 /*
473 * No incoming SD and filesystem is ZFS
474 * Server applies Windows inheritance rules,
475 * see smb_fsop_sdinherit() comments as to why.
476 */
477 smb_fssd_init(&fs_sd, SMB_ACL_SECINFO, 0);
478 rc = smb_fsop_sdinherit(sr, dnode, &fs_sd);
479 if (rc == 0) {
480 rc = smb_fsop_create_with_sd(sr, cr, dnode,
481 name, attr, ret_snode, &fs_sd);
482 }
483
484 smb_fssd_term(&fs_sd);
485 } else
486 #endif /* _KERNEL */
487 {
488 /*
489 * No incoming SD and filesystem is not ZFS
490 * let the filesystem handles the inheritance.
491 */
492 rc = smb_vop_create(dnode->vp, name, attr, &vp,
493 flags, cr, NULL);
494
495 if (rc == 0) {
496 *ret_snode = smb_node_lookup(sr, op, cr, vp,
497 name, dnode, NULL);
498
499 if (*ret_snode == NULL)
500 rc = ENOMEM;
501
502 VN_RELE(vp);
503 }
504
505 }
506
507 if (rc == 0)
508 smb_node_notify_change(dnode, FILE_ACTION_ADDED, name);
509
510 return (rc);
511 }
512
513 /*
514 * smb_fsop_mkdir
610 rc = EINVAL;
611 smb_fssd_term(&fs_sd);
612 } else if (sr->tid_tree->t_acltype == ACE_T) {
613 /*
614 * No incoming SD and filesystem is ZFS
615 * Server applies Windows inheritance rules,
616 * see smb_fsop_sdinherit() comments as to why.
617 */
618 smb_fssd_init(&fs_sd, SMB_ACL_SECINFO, SMB_FSSD_FLAGS_DIR);
619 rc = smb_fsop_sdinherit(sr, dnode, &fs_sd);
620 if (rc == 0) {
621 rc = smb_fsop_create_with_sd(sr, cr, dnode,
622 name, attr, ret_snode, &fs_sd);
623 }
624
625 smb_fssd_term(&fs_sd);
626
627 } else
628 #endif /* _KERNEL */
629 {
630 rc = smb_vop_mkdir(dnode->vp, name, attr, &vp, flags, cr,
631 NULL);
632
633 if (rc == 0) {
634 *ret_snode = smb_node_lookup(sr, op, cr, vp, name,
635 dnode, NULL);
636
637 if (*ret_snode == NULL)
638 rc = ENOMEM;
639
640 VN_RELE(vp);
641 }
642 }
643
644 if (rc == 0)
645 smb_node_notify_change(dnode, FILE_ACTION_ADDED, name);
646
647 return (rc);
648 }
649
650 /*
651 * smb_fsop_remove
652 *
653 * All SMB functions should use this wrapper to ensure that
654 * the the calls are performed with the appropriate credentials.
655 * Please document any direct call to explain the reason
656 * for avoiding this wrapper.
657 *
658 * It is assumed that a reference exists on snode coming into this routine.
659 *
660 * A null smb_request might be passed to this function.
661 */
662 int
663 smb_fsop_remove(
664 smb_request_t *sr,
665 cred_t *cr,
666 smb_node_t *dnode,
667 char *name,
668 uint32_t flags)
669 {
670 smb_node_t *fnode;
671 char *longname;
672 char *fname;
673 char *sname;
674 int rc;
675
676 ASSERT(cr);
677 /*
678 * The state of the node could be SMB_NODE_STATE_DESTROYING if this
679 * function is called during the deletion of the node (because of
680 * DELETE_ON_CLOSE).
681 */
682 ASSERT(dnode);
683 ASSERT(dnode->n_magic == SMB_NODE_MAGIC);
684
685 if (SMB_TREE_CONTAINS_NODE(sr, dnode) == 0 ||
686 SMB_TREE_HAS_ACCESS(sr, ACE_DELETE) == 0)
687 return (EACCES);
688
689 if (SMB_TREE_IS_READONLY(sr))
690 return (EROFS);
691
692 fname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
693 sname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
694
695 if (dnode->flags & NODE_XATTR_DIR) {
696 fnode = dnode->n_dnode;
697 rc = smb_vop_stream_remove(fnode->vp, name, flags, cr);
698
699 /* notify change to the unnamed stream */
700 if ((rc == 0) && fnode->n_dnode) {
701 smb_node_notify_change(fnode->n_dnode,
702 FILE_ACTION_REMOVED_STREAM, fnode->od_name);
703 }
704 } else if (smb_is_stream_name(name)) {
705 smb_stream_parse_name(name, fname, sname);
706
707 /*
708 * Look up the unnamed stream (i.e. fname).
709 * Unmangle processing will be done on fname
710 * as well as any link target.
711 */
712
713 rc = smb_fsop_lookup(sr, cr, flags | SMB_FOLLOW_LINKS,
714 sr->tid_tree->t_snode, dnode, fname, &fnode);
715
716 if (rc != 0) {
717 kmem_free(fname, MAXNAMELEN);
718 kmem_free(sname, MAXNAMELEN);
719 return (rc);
720 }
721
722 /*
723 * XXX
724 * Need to find out what permission is required by NTFS
725 * to remove a stream.
726 */
727 rc = smb_vop_stream_remove(fnode->vp, sname, flags, cr);
728
729 smb_node_release(fnode);
730
731 /* notify change to the unnamed stream */
732 if (rc == 0) {
733 smb_node_notify_change(dnode,
734 FILE_ACTION_REMOVED_STREAM, fname);
735 }
736 } else {
737 rc = smb_vop_remove(dnode->vp, name, flags, cr);
738
739 if (rc == ENOENT) {
740 if (!SMB_TREE_SUPPORTS_SHORTNAMES(sr) ||
741 !smb_maybe_mangled(name)) {
742 kmem_free(fname, MAXNAMELEN);
743 kmem_free(sname, MAXNAMELEN);
744 return (rc);
745 }
746 longname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
747
748 if (SMB_TREE_SUPPORTS_ABE(sr))
749 flags |= SMB_ABE;
750
751 rc = smb_unmangle(dnode, name, longname, MAXNAMELEN,
752 flags);
753
754 if (rc == 0) {
755 /*
756 * longname is the real (case-sensitive)
757 * on-disk name.
758 * We make sure we do a remove on this exact
759 * name, as the name was mangled and denotes
760 * a unique file.
761 */
762 flags &= ~SMB_IGNORE_CASE;
763 rc = smb_vop_remove(dnode->vp, longname,
764 flags, cr);
765 }
766 kmem_free(longname, MAXNAMELEN);
767 }
768 if (rc == 0) {
769 smb_node_notify_change(dnode,
770 FILE_ACTION_REMOVED, name);
771 }
772 }
773
774 kmem_free(fname, MAXNAMELEN);
775 kmem_free(sname, MAXNAMELEN);
776
777 return (rc);
778 }
779
780 /*
781 * smb_fsop_remove_streams
782 *
783 * This function removes a file's streams without removing the
784 * file itself.
785 *
786 * It is assumed that fnode is not a link.
787 */
788 uint32_t
789 smb_fsop_remove_streams(smb_request_t *sr, cred_t *cr, smb_node_t *fnode)
790 {
791 int rc, flags = 0;
792 smb_odir_t *od;
793 smb_odirent_t *odirent;
799 ASSERT(fnode);
800 ASSERT(fnode->n_magic == SMB_NODE_MAGIC);
801 ASSERT(fnode->n_state != SMB_NODE_STATE_DESTROYING);
802
803 if (SMB_TREE_CONTAINS_NODE(sr, fnode) == 0)
804 return (NT_STATUS_ACCESS_DENIED);
805
806 if (SMB_TREE_IS_READONLY(sr))
807 return (NT_STATUS_ACCESS_DENIED);
808
809 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
810 flags = SMB_IGNORE_CASE;
811
812 if (SMB_TREE_SUPPORTS_CATIA(sr))
813 flags |= SMB_CATIA;
814
815 status = smb_odir_openat(sr, fnode, &od);
816 switch (status) {
817 case 0:
818 break;
819 case NT_STATUS_NO_SUCH_FILE:
820 case NT_STATUS_NOT_SUPPORTED:
821 /* No streams to remove. */
822 return (0);
823 default:
824 return (status);
825 }
826
827 odirent = kmem_alloc(sizeof (smb_odirent_t), KM_SLEEP);
828 for (;;) {
829 rc = smb_odir_read(sr, od, odirent, &eos);
830 if ((rc != 0) || (eos))
831 break;
832 (void) smb_vop_remove(od->d_dnode->vp, odirent->od_name,
833 flags, cr);
834 }
835 kmem_free(odirent, sizeof (smb_odirent_t));
836 if (eos && rc == ENOENT)
837 rc = 0;
838
1097 /*
1098 * Note: There is no need to check SMB_TREE_IS_CASEINSENSITIVE
1099 * here.
1100 *
1101 * A case-sensitive rename is always done in this routine
1102 * because we are using the on-disk name from an earlier lookup.
1103 * If a mangled name was passed in by the caller (denoting a
1104 * deterministic lookup), then the exact file must be renamed
1105 * (i.e. SMB_IGNORE_CASE must not be passed to VOP_RENAME, or
1106 * else the underlying file system might return a "first-match"
1107 * on this on-disk name, possibly resulting in the wrong file).
1108 */
1109
1110 if (SMB_TREE_SUPPORTS_CATIA(sr))
1111 flags |= SMB_CATIA;
1112
1113 /*
1114 * XXX: Lock required through smb_node_release() below?
1115 */
1116
1117 rc = smb_vop_lookup(from_dnode->vp, from_name, &from_vp, NULL,
1118 flags, &ret_flags, NULL, &from_attr, cr);
1119
1120 if (rc != 0)
1121 return (rc);
1122
1123 if (from_attr.sa_dosattr & FILE_ATTRIBUTE_REPARSE_POINT) {
1124 VN_RELE(from_vp);
1125 return (EACCES);
1126 }
1127
1128 isdir = ((from_attr.sa_dosattr & FILE_ATTRIBUTE_DIRECTORY) != 0);
1129
1130 if ((isdir && SMB_TREE_HAS_ACCESS(sr,
1131 ACE_DELETE_CHILD | ACE_ADD_SUBDIRECTORY) !=
1132 (ACE_DELETE_CHILD | ACE_ADD_SUBDIRECTORY)) ||
1133 (!isdir && SMB_TREE_HAS_ACCESS(sr, ACE_DELETE | ACE_ADD_FILE) !=
1134 (ACE_DELETE | ACE_ADD_FILE))) {
1135 VN_RELE(from_vp);
1136 return (EACCES);
1137 }
1138
1139 /*
1140 * SMB checks access on open and retains an access granted
1141 * mask for use while the file is open. ACL changes should
1142 * not affect access to an open file.
1143 *
1144 * If the rename is being performed on an ofile:
1145 * - Check the ofile's access granted mask to see if the
1146 * rename is permitted - requires DELETE access.
1147 * - If the file system does access checking, set the
1148 * ATTR_NOACLCHECK flag to ensure that the file system
1149 * does not check permissions on subsequent calls.
1150 */
1151 if (sr && sr->fid_ofile) {
1152 rc = smb_ofile_access(sr->fid_ofile, cr, DELETE);
1153 if (rc != NT_STATUS_SUCCESS) {
1154 VN_RELE(from_vp);
1155 return (EACCES);
1156 }
1157
1158 if (smb_tree_has_feature(sr->tid_tree,
1159 SMB_TREE_ACEMASKONACCESS))
1160 flags = ATTR_NOACLCHECK;
1161 }
1162
1163 rc = smb_vop_rename(from_dnode->vp, from_name, to_dnode->vp,
1164 to_name, flags, cr);
1165
1166 if (rc == 0) {
1167 from_snode = smb_node_lookup(sr, NULL, cr, from_vp, from_name,
1168 from_dnode, NULL);
1169
1170 if (from_snode == NULL) {
1171 rc = ENOMEM;
1172 } else {
1173 smb_node_rename(from_dnode, from_snode,
1174 to_dnode, to_name);
1175 smb_node_release(from_snode);
1176 }
1177 }
1222 int rc = 0;
1223 int flags = 0;
1224 uint_t sa_mask;
1225
1226 ASSERT(cr);
1227 ASSERT(snode);
1228 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1229 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1230
1231 if (SMB_TREE_CONTAINS_NODE(sr, snode) == 0)
1232 return (EACCES);
1233
1234 if (SMB_TREE_IS_READONLY(sr))
1235 return (EROFS);
1236
1237 if (SMB_TREE_HAS_ACCESS(sr,
1238 ACE_WRITE_ATTRIBUTES | ACE_WRITE_NAMED_ATTRS) == 0)
1239 return (EACCES);
1240
1241 /*
1242 * The file system cannot detect pending READDONLY
1243 * (i.e. if the file has been opened readonly but
1244 * not yet closed) so we need to test READONLY here.
1245 *
1246 * Note that file handle that were opened before the
1247 * READONLY flag was set in the node (or the FS) are
1248 * immune to that change, and remain writable.
1249 */
1250 if (sr && (set_attr->sa_mask & SMB_AT_SIZE)) {
1251 if (sr->fid_ofile) {
1252 if (SMB_OFILE_IS_READONLY(sr->fid_ofile))
1253 return (EACCES);
1254 } else {
1255 if (SMB_PATHFILE_IS_READONLY(sr, snode))
1256 return (EACCES);
1257 }
1258 }
1259
1260 /*
1261 * SMB checks access on open and retains an access granted
1262 * mask for use while the file is open. ACL changes should
1263 * not affect access to an open file.
1264 *
1265 * If the setattr is being performed on an ofile:
1266 * - Check the ofile's access granted mask to see if the
1267 * setattr is permitted.
1268 * UID, GID - require WRITE_OWNER
1269 * SIZE, ALLOCSZ - require FILE_WRITE_DATA
1270 * all other attributes require FILE_WRITE_ATTRIBUTES
1271 *
1272 * - If the file system does access checking, set the
1273 * ATTR_NOACLCHECK flag to ensure that the file system
1274 * does not check permissions on subsequent calls.
1275 */
1276 if (sr && sr->fid_ofile) {
1277 sa_mask = set_attr->sa_mask;
1278 access = 0;
1279
1280 if (sa_mask & (SMB_AT_SIZE | SMB_AT_ALLOCSZ)) {
1296
1297 if (smb_tree_has_feature(sr->tid_tree,
1298 SMB_TREE_ACEMASKONACCESS))
1299 flags = ATTR_NOACLCHECK;
1300 }
1301
1302 unnamed_node = SMB_IS_STREAM(snode);
1303
1304 if (unnamed_node) {
1305 ASSERT(unnamed_node->n_magic == SMB_NODE_MAGIC);
1306 ASSERT(unnamed_node->n_state != SMB_NODE_STATE_DESTROYING);
1307 unnamed_vp = unnamed_node->vp;
1308 }
1309
1310 rc = smb_vop_setattr(snode->vp, unnamed_vp, set_attr, flags, cr);
1311 return (rc);
1312 }
1313
1314 /*
1315 * Support for SMB2 setinfo FileValidDataLengthInformation.
1316 * Free data from the specified offset to EoF.
1317 *
1318 * This can effectively truncate data. It truncates the data
1319 * leaving the file size as it was, leaving zeros after the
1320 * offset specified here. That is effectively modifying the
1321 * file content, so for access control this is a write.
1322 */
1323 int
1324 smb_fsop_set_data_length(
1325 smb_request_t *sr,
1326 cred_t *cr,
1327 smb_node_t *node,
1328 offset_t end_of_data)
1329 {
1330 flock64_t flk;
1331 uint32_t status;
1332 uint32_t access = FILE_WRITE_DATA;
1333 int rc;
1334
1335 ASSERT(cr);
1336 ASSERT(node);
1337 ASSERT(node->n_magic == SMB_NODE_MAGIC);
1338 ASSERT(node->n_state != SMB_NODE_STATE_DESTROYING);
1339
1340 if (SMB_TREE_CONTAINS_NODE(sr, node) == 0)
1341 return (EACCES);
1342
1343 if (SMB_TREE_IS_READONLY(sr))
1344 return (EROFS);
1345
1346 if (SMB_TREE_HAS_ACCESS(sr, access) == 0)
1347 return (EACCES);
1348
1349 /*
1350 * The file system cannot detect pending READDONLY
1351 * (i.e. if the file has been opened readonly but
1352 * not yet closed) so we need to test READONLY here.
1353 *
1354 * Note that file handle that were opened before the
1355 * READONLY flag was set in the node (or the FS) are
1356 * immune to that change, and remain writable.
1357 */
1358 if (sr->fid_ofile) {
1359 if (SMB_OFILE_IS_READONLY(sr->fid_ofile))
1360 return (EACCES);
1361 } else {
1362 /* This requires an open file. */
1363 return (EACCES);
1364 }
1365
1366 /*
1367 * SMB checks access on open and retains an access granted
1368 * mask for use while the file is open. ACL changes should
1369 * not affect access to an open file.
1370 *
1371 * If the setattr is being performed on an ofile:
1372 * - Check the ofile's access granted mask to see if this
1373 * modification should be permitted (FILE_WRITE_DATA)
1374 */
1375 status = smb_ofile_access(sr->fid_ofile, cr, access);
1376 if (status != NT_STATUS_SUCCESS)
1377 return (EACCES);
1378
1379 bzero(&flk, sizeof (flk));
1380 flk.l_start = end_of_data;
1381
1382 rc = smb_vop_space(node->vp, F_FREESP, &flk, FWRITE, 0LL, cr);
1383 return (rc);
1384 }
1385
1386 /*
1387 * smb_fsop_read
1388 *
1389 * All SMB functions should use this wrapper to ensure that
1390 * the the calls are performed with the appropriate credentials.
1391 * Please document any direct call to explain the reason
1392 * for avoiding this wrapper.
1393 *
1394 * It is assumed that a reference exists on snode coming into this routine.
1395 */
1396 int
1397 smb_fsop_read(smb_request_t *sr, cred_t *cr, smb_node_t *snode, uio_t *uio)
1398 {
1399 caller_context_t ct;
1400 cred_t *kcr = zone_kcred();
1401 int svmand;
1402 int rc;
1403
1404 ASSERT(cr);
1405 ASSERT(snode);
1406 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1407 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1408
1409 ASSERT(sr);
1410 ASSERT(sr->fid_ofile);
1411
1412 if (SMB_TREE_HAS_ACCESS(sr, ACE_READ_DATA) == 0)
1413 return (EACCES);
1414
1415 rc = smb_ofile_access(sr->fid_ofile, cr, FILE_READ_DATA);
1416 if ((rc != NT_STATUS_SUCCESS) &&
1417 (sr->smb_flg2 & SMB_FLAGS2_READ_IF_EXECUTE))
1418 rc = smb_ofile_access(sr->fid_ofile, cr, FILE_EXECUTE);
1419
1420 if (rc != NT_STATUS_SUCCESS)
1421 return (EACCES);
1422
1423 /*
1424 * Streams permission are checked against the unnamed stream,
1425 * but in FS level they have their own permissions. To avoid
1426 * rejection by FS due to lack of permission on the actual
1427 * extended attr kcred is passed for streams.
1428 */
1429 if (SMB_IS_STREAM(snode))
1430 cr = kcr;
1431
1432 smb_node_start_crit(snode, RW_READER);
1433 rc = nbl_svmand(snode->vp, kcr, &svmand);
1434 if (rc) {
1435 smb_node_end_crit(snode);
1436 return (rc);
1437 }
1438
1439 ct = smb_ct;
1440 ct.cc_pid = sr->fid_ofile->f_uniqid;
1441 rc = nbl_lock_conflict(snode->vp, NBL_READ, uio->uio_loffset,
1442 uio->uio_iov->iov_len, svmand, &ct);
1443
1444 if (rc) {
1445 smb_node_end_crit(snode);
1446 return (ERANGE);
1447 }
1448
1449 rc = smb_vop_read(snode->vp, uio, cr);
1450 smb_node_end_crit(snode);
1451
1452 return (rc);
1453 }
1454
1455 /*
1456 * smb_fsop_write
1457 *
1458 * This is a wrapper function used for smb_write and smb_write_raw operations.
1459 *
1460 * It is assumed that a reference exists on snode coming into this routine.
1461 */
1462 int
1463 smb_fsop_write(
1464 smb_request_t *sr,
1465 cred_t *cr,
1466 smb_node_t *snode,
1467 uio_t *uio,
1468 uint32_t *lcount,
1469 int ioflag)
1470 {
1471 caller_context_t ct;
1472 smb_attr_t attr;
1473 smb_node_t *u_node;
1474 vnode_t *u_vp = NULL;
1475 smb_ofile_t *of;
1476 vnode_t *vp;
1477 cred_t *kcr = zone_kcred();
1478 int svmand;
1479 int rc;
1480
1481 ASSERT(cr);
1482 ASSERT(snode);
1483 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1484 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1485
1486 ASSERT(sr);
1487 ASSERT(sr->tid_tree);
1488 of = sr->fid_ofile;
1489 vp = snode->vp;
1490
1491 if (SMB_TREE_IS_READONLY(sr))
1492 return (EROFS);
1493
1494 if (SMB_OFILE_IS_READONLY(of) ||
1495 SMB_TREE_HAS_ACCESS(sr, ACE_WRITE_DATA | ACE_APPEND_DATA) == 0)
1496 return (EACCES);
1497
1498 rc = smb_ofile_access(of, cr, FILE_WRITE_DATA);
1499 if (rc != NT_STATUS_SUCCESS) {
1500 rc = smb_ofile_access(of, cr, FILE_APPEND_DATA);
1501 if (rc != NT_STATUS_SUCCESS)
1502 return (EACCES);
1503 }
1504
1505 /*
1506 * Streams permission are checked against the unnamed stream,
1507 * but in FS level they have their own permissions. To avoid
1508 * rejection by FS due to lack of permission on the actual
1509 * extended attr kcred is passed for streams.
1510 */
1511 u_node = SMB_IS_STREAM(snode);
1512 if (u_node != NULL) {
1513 ASSERT(u_node->n_magic == SMB_NODE_MAGIC);
1514 ASSERT(u_node->n_state != SMB_NODE_STATE_DESTROYING);
1515 u_vp = u_node->vp;
1516 cr = kcr;
1517 }
1518
1519 smb_node_start_crit(snode, RW_WRITER);
1520 rc = nbl_svmand(vp, kcr, &svmand);
1521 if (rc) {
1522 smb_node_end_crit(snode);
1523 return (rc);
1524 }
1525
1526 ct = smb_ct;
1527 ct.cc_pid = of->f_uniqid;
1528 rc = nbl_lock_conflict(vp, NBL_WRITE, uio->uio_loffset,
1529 uio->uio_iov->iov_len, svmand, &ct);
1530
1531 if (rc) {
1532 smb_node_end_crit(snode);
1533 return (ERANGE);
1534 }
1535
1536 rc = smb_vop_write(vp, uio, ioflag, lcount, cr);
1537
1538 /*
1539 * Once the mtime has been set via this ofile, the
1540 * automatic mtime changes from writes via this ofile
1541 * should cease, preserving the mtime that was set.
1542 * See: [MS-FSA] 2.1.5.14 and smb_node_setattr.
1543 *
1544 * The VFS interface does not offer a way to ask it to
1545 * skip the mtime updates, so we simulate the desired
1546 * behavior by re-setting the mtime after writes on a
1547 * handle where the mtime has been set.
1548 */
1549 if (of->f_pending_attr.sa_mask & SMB_AT_MTIME) {
1550 bcopy(&of->f_pending_attr, &attr, sizeof (attr));
1551 attr.sa_mask = SMB_AT_MTIME;
1552 (void) smb_vop_setattr(vp, u_vp, &attr, 0, kcr);
1553 }
1554
1555 smb_node_end_crit(snode);
1556
1557 return (rc);
1558 }
1559
1560 /*
1561 * smb_fsop_statfs
1562 *
1563 * This is a wrapper function used for stat operations.
1564 */
1565 int
1566 smb_fsop_statfs(
1567 cred_t *cr,
1568 smb_node_t *snode,
1569 struct statvfs64 *statp)
1570 {
1571 ASSERT(cr);
1572 ASSERT(snode);
1573 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1574 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1575
1576 return (smb_vop_statfs(snode->vp, statp, cr));
1577 }
1578
1579 /*
1580 * smb_fsop_access
1581 *
1582 * Named streams do not have separate permissions from the associated
1583 * unnamed stream. Thus, if node is a named stream, the permissions
1584 * check will be performed on the associated unnamed stream.
1585 *
1586 * However, our named streams do have their own quarantine attribute,
1587 * separate from that on the unnamed stream. If READ or EXECUTE
1588 * access has been requested on a named stream, an additional access
1589 * check is performed on the named stream in case it has been
1590 * quarantined. kcred is used to avoid issues with the permissions
1591 * set on the extended attribute file representing the named stream.
1592 */
1593 int
1594 smb_fsop_access(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
1595 uint32_t faccess)
1596 {
1597 int access = 0;
1598 int error;
1599 vnode_t *dir_vp;
1600 boolean_t acl_check = B_TRUE;
1601 smb_node_t *unnamed_node;
1602
1603 ASSERT(sr);
1604 ASSERT(cr);
1605 ASSERT(snode);
1606 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1607 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1608
1609 if (SMB_TREE_IS_READONLY(sr)) {
1610 if (faccess & (FILE_WRITE_DATA|FILE_APPEND_DATA|
1611 FILE_WRITE_EA|FILE_DELETE_CHILD|FILE_WRITE_ATTRIBUTES|
1612 DELETE|WRITE_DAC|WRITE_OWNER)) {
1613 return (NT_STATUS_ACCESS_DENIED);
1614 }
1615 }
1616
1617 if (smb_node_is_reparse(snode) && (faccess & DELETE))
1618 return (NT_STATUS_ACCESS_DENIED);
1619
1620 unnamed_node = SMB_IS_STREAM(snode);
1621 if (unnamed_node) {
1622 ASSERT(unnamed_node->n_magic == SMB_NODE_MAGIC);
1623 ASSERT(unnamed_node->n_state != SMB_NODE_STATE_DESTROYING);
1624
1625 /*
1626 * Perform VREAD access check on the named stream in case it
1627 * is quarantined. kcred is passed to smb_vop_access so it
1628 * doesn't fail due to lack of permission.
1629 */
1630 if (faccess & (FILE_READ_DATA | FILE_EXECUTE)) {
1631 error = smb_vop_access(snode->vp, VREAD,
1632 0, NULL, zone_kcred());
1633 if (error)
1634 return (NT_STATUS_ACCESS_DENIED);
1635 }
1636
1637 /*
1638 * Streams authorization should be performed against the
1639 * unnamed stream.
1640 */
1641 snode = unnamed_node;
1642 }
1643
1644 if (faccess & ACCESS_SYSTEM_SECURITY) {
1645 /*
1646 * This permission is required for reading/writing SACL and
1647 * it's not part of DACL. It's only granted via proper
1648 * privileges.
1649 */
1650 if ((sr->uid_user->u_privileges &
1651 (SMB_USER_PRIV_BACKUP |
1652 SMB_USER_PRIV_RESTORE |
1675 * FS doesn't understand 32-bit mask, need to map
1676 */
1677 if (faccess & (FILE_WRITE_DATA | FILE_APPEND_DATA))
1678 access |= VWRITE;
1679
1680 if (faccess & FILE_READ_DATA)
1681 access |= VREAD;
1682
1683 if (faccess & FILE_EXECUTE)
1684 access |= VEXEC;
1685
1686 error = smb_vop_access(snode->vp, access, 0, NULL, cr);
1687 }
1688
1689 return ((error) ? NT_STATUS_ACCESS_DENIED : NT_STATUS_SUCCESS);
1690 }
1691
1692 /*
1693 * smb_fsop_lookup_name()
1694 *
1695 * If name indicates that the file is a stream file, perform
1696 * stream specific lookup, otherwise call smb_fsop_lookup.
1697 *
1698 * Return an error if the looked-up file is in outside the tree.
1699 * (Required when invoked from open path.)
1700 *
1701 * Case sensitivity flags (SMB_IGNORE_CASE, SMB_CASE_SENSITIVE):
1702 * if SMB_CASE_SENSITIVE is set, the SMB_IGNORE_CASE flag will NOT be set
1703 * based on the tree's case sensitivity. However, if the SMB_IGNORE_CASE
1704 * flag is set in the flags value passed as a parameter, a case insensitive
1705 * lookup WILL be done (regardless of whether SMB_CASE_SENSITIVE is set
1706 * or not).
1707 */
1708
1709 int
1710 smb_fsop_lookup_name(
1711 smb_request_t *sr,
1712 cred_t *cr,
1713 int flags,
1714 smb_node_t *root_node,
1715 smb_node_t *dnode,
1716 char *name,
1717 smb_node_t **ret_snode)
1718 {
1719 smb_node_t *fnode;
1720 vnode_t *xattrdirvp;
1721 vnode_t *vp;
1722 char *od_name;
1723 char *fname;
1724 char *sname;
1725 int rc;
1726
1727 ASSERT(cr);
1728 ASSERT(dnode);
1729 ASSERT(dnode->n_magic == SMB_NODE_MAGIC);
1730 ASSERT(dnode->n_state != SMB_NODE_STATE_DESTROYING);
1731
1732 /*
1733 * The following check is required for streams processing, below
1734 */
1735
1736 if (!(flags & SMB_CASE_SENSITIVE)) {
1737 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
1738 flags |= SMB_IGNORE_CASE;
1739 }
1740
1741 fname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1742 sname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1743
1744 if (smb_is_stream_name(name)) {
1745 smb_stream_parse_name(name, fname, sname);
1746
1747 /*
1748 * Look up the unnamed stream (i.e. fname).
1749 * Unmangle processing will be done on fname
1750 * as well as any link target.
1751 */
1752 rc = smb_fsop_lookup(sr, cr, flags, root_node, dnode,
1753 fname, &fnode);
1754
1755 if (rc != 0) {
1756 kmem_free(fname, MAXNAMELEN);
1757 kmem_free(sname, MAXNAMELEN);
1758 return (rc);
1759 }
1760
1761 od_name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1762
1763 /*
1764 * od_name is the on-disk name of the stream, except
1765 * without the prepended stream prefix (SMB_STREAM_PREFIX)
1766 */
1767
1768 /*
1769 * XXX
1770 * What permissions NTFS requires for stream lookup if any?
1771 */
1772 rc = smb_vop_stream_lookup(fnode->vp, sname, &vp, od_name,
1773 &xattrdirvp, flags, root_node->vp, cr);
1774
1775 if (rc != 0) {
1776 smb_node_release(fnode);
1777 kmem_free(fname, MAXNAMELEN);
1778 kmem_free(sname, MAXNAMELEN);
1779 kmem_free(od_name, MAXNAMELEN);
1780 return (rc);
1781 }
1782
1783 *ret_snode = smb_stream_node_lookup(sr, cr, fnode, xattrdirvp,
1784 vp, od_name);
1785
1786 kmem_free(od_name, MAXNAMELEN);
1787 smb_node_release(fnode);
1788 VN_RELE(xattrdirvp);
1789 VN_RELE(vp);
1790
1791 if (*ret_snode == NULL) {
1792 kmem_free(fname, MAXNAMELEN);
1793 kmem_free(sname, MAXNAMELEN);
1794 return (ENOMEM);
1795 }
1796 } else {
1797 rc = smb_fsop_lookup(sr, cr, flags, root_node, dnode, name,
1798 ret_snode);
1799 }
1800
1801 if (rc == 0) {
1802 ASSERT(ret_snode);
1803 if (SMB_TREE_CONTAINS_NODE(sr, *ret_snode) == 0) {
1804 smb_node_release(*ret_snode);
1805 *ret_snode = NULL;
1806 rc = EACCES;
1807 }
1808 }
1809
1810 kmem_free(fname, MAXNAMELEN);
1811 kmem_free(sname, MAXNAMELEN);
1812
1813 return (rc);
1814 }
1815
1816 /*
1817 * smb_fsop_lookup
1818 *
1819 * All SMB functions should use this smb_vop_lookup wrapper to ensure that
1820 * the smb_vop_lookup is performed with the appropriate credentials and using
1821 * case insensitive compares. Please document any direct call to smb_vop_lookup
1822 * to explain the reason for avoiding this wrapper.
1823 *
1824 * It is assumed that a reference exists on dnode coming into this routine
1825 * (and that it is safe from deallocation).
1826 *
1827 * Same with the root_node.
1828 *
1829 * *ret_snode is returned with a reference upon success. No reference is
1830 * taken if an error is returned.
1831 *
1832 * Note: The returned ret_snode may be in a child mount. This is ok for
1864 ASSERT(cr);
1865 ASSERT(dnode);
1866 ASSERT(dnode->n_magic == SMB_NODE_MAGIC);
1867 ASSERT(dnode->n_state != SMB_NODE_STATE_DESTROYING);
1868
1869 if (name == NULL)
1870 return (EINVAL);
1871
1872 if (SMB_TREE_CONTAINS_NODE(sr, dnode) == 0)
1873 return (EACCES);
1874
1875 if (!(flags & SMB_CASE_SENSITIVE)) {
1876 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
1877 flags |= SMB_IGNORE_CASE;
1878 }
1879 if (SMB_TREE_SUPPORTS_CATIA(sr))
1880 flags |= SMB_CATIA;
1881 if (SMB_TREE_SUPPORTS_ABE(sr))
1882 flags |= SMB_ABE;
1883
1884 od_name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1885
1886 rc = smb_vop_lookup(dnode->vp, name, &vp, od_name, flags,
1887 &ret_flags, root_node ? root_node->vp : NULL, &attr, cr);
1888
1889 if (rc != 0) {
1890 if (!SMB_TREE_SUPPORTS_SHORTNAMES(sr) ||
1891 !smb_maybe_mangled(name)) {
1892 kmem_free(od_name, MAXNAMELEN);
1893 return (rc);
1894 }
1895
1896 longname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1897 rc = smb_unmangle(dnode, name, longname, MAXNAMELEN, flags);
1898 if (rc != 0) {
1899 kmem_free(od_name, MAXNAMELEN);
1900 kmem_free(longname, MAXNAMELEN);
1901 return (rc);
1902 }
1903
1904 /*
1905 * longname is the real (case-sensitive)
1910 */
1911
1912 if (flags & SMB_IGNORE_CASE)
1913 flags &= ~SMB_IGNORE_CASE;
1914
1915 rc = smb_vop_lookup(dnode->vp, longname, &vp, od_name,
1916 flags, &ret_flags, root_node ? root_node->vp : NULL, &attr,
1917 cr);
1918
1919 kmem_free(longname, MAXNAMELEN);
1920
1921 if (rc != 0) {
1922 kmem_free(od_name, MAXNAMELEN);
1923 return (rc);
1924 }
1925 }
1926
1927 if ((flags & SMB_FOLLOW_LINKS) && (vp->v_type == VLNK) &&
1928 ((attr.sa_dosattr & FILE_ATTRIBUTE_REPARSE_POINT) == 0)) {
1929 rc = smb_pathname(sr, od_name, FOLLOW, root_node, dnode,
1930 &lnk_dnode, &lnk_target_node, cr);
1931
1932 if (rc != 0) {
1933 /*
1934 * The link is assumed to be for the last component
1935 * of a path. Hence any ENOTDIR error will be returned
1936 * as ENOENT.
1937 */
1938 if (rc == ENOTDIR)
1939 rc = ENOENT;
1940
1941 VN_RELE(vp);
1942 kmem_free(od_name, MAXNAMELEN);
1943 return (rc);
1944 }
1945
1946 /*
1947 * Release the original VLNK vnode
1948 */
1949
1950 VN_RELE(vp);
2019 *
2020 * Retrieve filesystem ACL. Depends on requested ACLs in
2021 * fs_sd->sd_secinfo, it'll set DACL and SACL pointers in
2022 * fs_sd. Note that requesting a DACL/SACL doesn't mean that
2023 * the corresponding field in fs_sd should be non-NULL upon
2024 * return, since the target ACL might not contain that type of
2025 * entries.
2026 *
2027 * Returned ACL is always in ACE_T (aka ZFS) format.
2028 * If successful the allocated memory for the ACL should be freed
2029 * using smb_fsacl_free() or smb_fssd_term()
2030 */
2031 int
2032 smb_fsop_aclread(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2033 smb_fssd_t *fs_sd)
2034 {
2035 int error = 0;
2036 int flags = 0;
2037 int access = 0;
2038 acl_t *acl;
2039 smb_node_t *unnamed_node;
2040
2041 ASSERT(cr);
2042
2043 if (SMB_TREE_HAS_ACCESS(sr, ACE_READ_ACL) == 0)
2044 return (EACCES);
2045
2046 if (sr->fid_ofile) {
2047 if (fs_sd->sd_secinfo & SMB_DACL_SECINFO)
2048 access = READ_CONTROL;
2049
2050 if (fs_sd->sd_secinfo & SMB_SACL_SECINFO)
2051 access |= ACCESS_SYSTEM_SECURITY;
2052
2053 error = smb_ofile_access(sr->fid_ofile, cr, access);
2054 if (error != NT_STATUS_SUCCESS) {
2055 return (EACCES);
2056 }
2057 }
2058
2059 unnamed_node = SMB_IS_STREAM(snode);
2060 if (unnamed_node) {
2061 ASSERT(unnamed_node->n_magic == SMB_NODE_MAGIC);
2062 ASSERT(unnamed_node->n_state != SMB_NODE_STATE_DESTROYING);
2063 /*
2064 * Streams don't have ACL, any read ACL attempt on a stream
2065 * should be performed on the unnamed stream.
2066 */
2067 snode = unnamed_node;
2068 }
2069
2070 if (smb_tree_has_feature(sr->tid_tree, SMB_TREE_ACEMASKONACCESS))
2071 flags = ATTR_NOACLCHECK;
2072
2073 error = smb_vop_acl_read(snode->vp, &acl, flags,
2074 sr->tid_tree->t_acltype, cr);
2075 if (error != 0) {
2076 return (error);
2077 }
2078
2079 error = acl_translate(acl, _ACL_ACE_ENABLED,
2080 smb_node_is_dir(snode), fs_sd->sd_uid, fs_sd->sd_gid);
2081
2082 if (error == 0) {
2083 smb_fsacl_split(acl, &fs_sd->sd_zdacl, &fs_sd->sd_zsacl,
2084 fs_sd->sd_secinfo);
2085 }
2086
2087 acl_free(acl);
2088 return (error);
2089 }
2090
2091 /*
2092 * smb_fsop_aclwrite
2093 *
2094 * Stores the filesystem ACL provided in fs_sd->sd_acl.
2095 */
2096 int
2097 smb_fsop_aclwrite(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2098 smb_fssd_t *fs_sd)
2099 {
2100 int target_flavor;
2101 int error = 0;
2102 int flags = 0;
2103 int access = 0;
2104 acl_t *acl, *dacl, *sacl;
2105 smb_node_t *unnamed_node;
2106
2107 ASSERT(cr);
2108
2109 ASSERT(sr);
2110 ASSERT(sr->tid_tree);
2111 if (SMB_TREE_IS_READONLY(sr))
2112 return (EROFS);
2113
2114 if (SMB_TREE_HAS_ACCESS(sr, ACE_WRITE_ACL) == 0)
2115 return (EACCES);
2116
2117 if (sr->fid_ofile) {
2118 if (fs_sd->sd_secinfo & SMB_DACL_SECINFO)
2119 access = WRITE_DAC;
2120
2121 if (fs_sd->sd_secinfo & SMB_SACL_SECINFO)
2122 access |= ACCESS_SYSTEM_SECURITY;
2123
2124 error = smb_ofile_access(sr->fid_ofile, cr, access);
2125 if (error != NT_STATUS_SUCCESS)
2126 return (EACCES);
2127 }
2128
2129 switch (sr->tid_tree->t_acltype) {
2130 case ACLENT_T:
2131 target_flavor = _ACL_ACLENT_ENABLED;
2132 break;
2133
2134 case ACE_T:
2135 target_flavor = _ACL_ACE_ENABLED;
2136 break;
2137 default:
2138 return (EINVAL);
2139 }
2140
2141 unnamed_node = SMB_IS_STREAM(snode);
2142 if (unnamed_node) {
2143 ASSERT(unnamed_node->n_magic == SMB_NODE_MAGIC);
2144 ASSERT(unnamed_node->n_state != SMB_NODE_STATE_DESTROYING);
2145 /*
2146 * Streams don't have ACL, any write ACL attempt on a stream
2147 * should be performed on the unnamed stream.
2148 */
2149 snode = unnamed_node;
2150 }
2151
2152 dacl = fs_sd->sd_zdacl;
2153 sacl = fs_sd->sd_zsacl;
2154
2155 ASSERT(dacl || sacl);
2156 if ((dacl == NULL) && (sacl == NULL))
2157 return (EINVAL);
2158
2159 if (dacl && sacl)
2160 acl = smb_fsacl_merge(dacl, sacl);
2161 else if (dacl)
2162 acl = dacl;
2163 else
2164 acl = sacl;
2165
2166 error = acl_translate(acl, target_flavor, smb_node_is_dir(snode),
2167 fs_sd->sd_uid, fs_sd->sd_gid);
2168 if (error == 0) {
2169 if (smb_tree_has_feature(sr->tid_tree,
2170 SMB_TREE_ACEMASKONACCESS))
2171 flags = ATTR_NOACLCHECK;
2186 }
2187
2188 /*
2189 * smb_fsop_sdread
2190 *
2191 * Read the requested security descriptor items from filesystem.
2192 * The items are specified in fs_sd->sd_secinfo.
2193 */
2194 int
2195 smb_fsop_sdread(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2196 smb_fssd_t *fs_sd)
2197 {
2198 int error = 0;
2199 int getowner = 0;
2200 cred_t *ga_cred;
2201 smb_attr_t attr;
2202
2203 ASSERT(cr);
2204 ASSERT(fs_sd);
2205
2206 /*
2207 * File's uid/gid is fetched in two cases:
2208 *
2209 * 1. it's explicitly requested
2210 *
2211 * 2. target ACL is ACE_T (ZFS ACL). They're needed for
2212 * owner@/group@ entries. In this case kcred should be used
2213 * because uid/gid are fetched on behalf of smb server.
2214 */
2215 if (fs_sd->sd_secinfo & (SMB_OWNER_SECINFO | SMB_GROUP_SECINFO)) {
2216 getowner = 1;
2217 ga_cred = cr;
2218 } else if (sr->tid_tree->t_acltype == ACE_T) {
2219 getowner = 1;
2220 ga_cred = zone_kcred();
2221 }
2222
2223 if (getowner) {
2224 /*
2225 * Windows require READ_CONTROL to read owner/group SID since
2351 * in upper layers, so EPERM is mapped to EBADE.
2352 */
2353 int
2354 smb_fsop_sdwrite(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2355 smb_fssd_t *fs_sd, int overwrite)
2356 {
2357 smb_attr_t set_attr;
2358 smb_attr_t orig_attr;
2359 cred_t *kcr = zone_kcred();
2360 int error = 0;
2361 int access = 0;
2362
2363 ASSERT(cr);
2364 ASSERT(fs_sd);
2365
2366 ASSERT(sr);
2367 ASSERT(sr->tid_tree);
2368 if (SMB_TREE_IS_READONLY(sr))
2369 return (EROFS);
2370
2371 bzero(&set_attr, sizeof (smb_attr_t));
2372
2373 if (fs_sd->sd_secinfo & SMB_OWNER_SECINFO) {
2374 set_attr.sa_vattr.va_uid = fs_sd->sd_uid;
2375 set_attr.sa_mask |= SMB_AT_UID;
2376 access |= WRITE_OWNER;
2377 }
2378
2379 if (fs_sd->sd_secinfo & SMB_GROUP_SECINFO) {
2380 set_attr.sa_vattr.va_gid = fs_sd->sd_gid;
2381 set_attr.sa_mask |= SMB_AT_GID;
2382 access |= WRITE_OWNER;
2383 }
2384
2385 if (fs_sd->sd_secinfo & SMB_DACL_SECINFO)
2386 access |= WRITE_DAC;
2387
2388 if (fs_sd->sd_secinfo & SMB_SACL_SECINFO)
2389 access |= ACCESS_SYSTEM_SECURITY;
2390
2541 return;
2542 }
2543
2544 /*
2545 * FS doesn't understand 32-bit mask
2546 */
2547 smb_vop_eaccess(snode->vp, &access, 0, NULL, cr);
2548 access &= sr->tid_tree->t_access;
2549
2550 *eaccess = READ_CONTROL | FILE_READ_EA | FILE_READ_ATTRIBUTES;
2551
2552 if (access & VREAD)
2553 *eaccess |= FILE_READ_DATA;
2554
2555 if (access & VEXEC)
2556 *eaccess |= FILE_EXECUTE;
2557
2558 if (access & VWRITE)
2559 *eaccess |= FILE_WRITE_DATA | FILE_WRITE_ATTRIBUTES |
2560 FILE_WRITE_EA | FILE_APPEND_DATA | FILE_DELETE_CHILD;
2561 }
2562
2563 /*
2564 * smb_fsop_shrlock
2565 *
2566 * For the current open request, check file sharing rules
2567 * against existing opens.
2568 *
2569 * Returns NT_STATUS_SHARING_VIOLATION if there is any
2570 * sharing conflict. Returns NT_STATUS_SUCCESS otherwise.
2571 *
2572 * Full system-wide share reservation synchronization is available
2573 * when the nbmand (non-blocking mandatory) mount option is set
2574 * (i.e. nbl_need_crit() is true) and nbmand critical regions are used.
2575 * This provides synchronization with NFS and local processes. The
2576 * critical regions are entered in VOP_SHRLOCK()/fs_shrlock() (called
2577 * from smb_open_subr()/smb_fsop_shrlock()/smb_vop_shrlock()) as well
2578 * as the CIFS rename and delete paths.
2579 *
2580 * The CIFS server will also enter the nbl critical region in the open,
2621 {
2622 flock64_t bf;
2623 int flag = F_REMOTELOCK;
2624
2625 /*
2626 * VOP_FRLOCK() will not be called if:
2627 *
2628 * 1) The lock has a range of zero bytes. The semantics of Windows and
2629 * POSIX are different. In the case of POSIX it asks for the locking
2630 * of all the bytes from the offset provided until the end of the
2631 * file. In the case of Windows a range of zero locks nothing and
2632 * doesn't conflict with any other lock.
2633 *
2634 * 2) The lock rolls over (start + lenght < start). Solaris will assert
2635 * if such a request is submitted. This will not create
2636 * incompatibilities between POSIX and Windows. In the Windows world,
2637 * if a client submits such a lock, the server will not lock any
2638 * bytes. Interestingly if the same lock (same offset and length) is
2639 * resubmitted Windows will consider that there is an overlap and
2640 * the granting rules will then apply.
2641 */
2642 if ((lock->l_length == 0) ||
2643 ((lock->l_start + lock->l_length - 1) < lock->l_start))
2644 return (0);
2645
2646 bzero(&bf, sizeof (bf));
2647
2648 if (unlock) {
2649 bf.l_type = F_UNLCK;
2650 } else if (lock->l_type == SMB_LOCK_TYPE_READONLY) {
2651 bf.l_type = F_RDLCK;
2652 flag |= FREAD;
2653 } else if (lock->l_type == SMB_LOCK_TYPE_READWRITE) {
2654 bf.l_type = F_WRLCK;
2655 flag |= FWRITE;
2656 }
2657
2658 bf.l_start = lock->l_start;
2659 bf.l_len = lock->l_length;
2660 bf.l_pid = lock->l_file->f_uniqid;
|
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 (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
23 * Copyright 2018 Nexenta Systems, Inc. All rights reserved.
24 */
25
26 #include <sys/sid.h>
27 #include <sys/nbmlock.h>
28 #include <smbsrv/smb_fsops.h>
29 #include <smbsrv/smb_kproto.h>
30 #include <acl/acl_common.h>
31 #include <sys/fcntl.h>
32 #include <sys/filio.h>
33 #include <sys/flock.h>
34 #include <fs/fs_subr.h>
35
36 extern caller_context_t smb_ct;
37
38 static int smb_fsop_create_file_with_stream(smb_request_t *, cred_t *,
39 smb_node_t *, char *, char *, int, smb_attr_t *, smb_node_t **);
40
41 static int smb_fsop_create_file(smb_request_t *, cred_t *, smb_node_t *,
42 char *, int, smb_attr_t *, smb_node_t **);
43
44 #ifdef _KERNEL
45 static int smb_fsop_create_with_sd(smb_request_t *, cred_t *, smb_node_t *,
46 char *, smb_attr_t *, smb_node_t **, smb_fssd_t *);
47 static int smb_fsop_sdinherit(smb_request_t *, smb_node_t *, smb_fssd_t *);
48 #endif /* _KERNEL */
49
50 /*
51 * The smb_fsop_* functions have knowledge of CIFS semantics.
52 *
53 * The smb_vop_* functions have minimal knowledge of CIFS semantics and
54 * serve as an interface to the VFS layer.
55 *
56 * Hence, smb_request_t and smb_node_t structures should not be passed
57 * from the smb_fsop_* layer to the smb_vop_* layer.
58 *
59 * In general, CIFS service code should only ever call smb_fsop_*
117 {
118 smb_vop_close(node->vp, mode, cred);
119 }
120
121 #ifdef _KERNEL
122 static int
123 smb_fsop_create_with_sd(smb_request_t *sr, cred_t *cr,
124 smb_node_t *dnode, char *name,
125 smb_attr_t *attr, smb_node_t **ret_snode, smb_fssd_t *fs_sd)
126 {
127 vsecattr_t *vsap;
128 vsecattr_t vsecattr;
129 smb_attr_t set_attr;
130 acl_t *acl, *dacl, *sacl;
131 vnode_t *vp;
132 cred_t *kcr = zone_kcred();
133 int aclbsize = 0; /* size of acl list in bytes */
134 int flags = 0;
135 int rc;
136 boolean_t is_dir;
137 boolean_t do_audit;
138
139 ASSERT(fs_sd);
140 ASSERT(ret_snode != NULL);
141
142 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
143 flags = SMB_IGNORE_CASE;
144 if (SMB_TREE_SUPPORTS_CATIA(sr))
145 flags |= SMB_CATIA;
146
147 ASSERT(cr);
148
149 is_dir = ((fs_sd->sd_flags & SMB_FSSD_FLAGS_DIR) != 0);
150
151 do_audit = smb_audit_init(sr);
152 if (smb_tree_has_feature(sr->tid_tree, SMB_TREE_ACLONCREATE)) {
153 if (fs_sd->sd_secinfo & SMB_ACL_SECINFO) {
154 dacl = fs_sd->sd_zdacl;
155 sacl = fs_sd->sd_zsacl;
156 ASSERT(dacl || sacl);
157 if (dacl && sacl) {
158 acl = smb_fsacl_merge(dacl, sacl);
159 } else if (dacl) {
160 acl = dacl;
161 } else {
162 acl = sacl;
163 }
164
165 rc = smb_fsacl_to_vsa(acl, &vsecattr, &aclbsize);
166
167 if (dacl && sacl)
168 acl_free(acl);
169
170 if (rc != 0)
171 return (rc);
172
173 vsap = &vsecattr;
174 } else {
175 vsap = NULL;
176 }
177
178 /* The tree ACEs may prevent a create */
179 rc = EACCES;
180 if (is_dir) {
181 if (SMB_TREE_HAS_ACCESS(sr, ACE_ADD_SUBDIRECTORY) != 0)
182 rc = smb_vop_mkdir(dnode->vp, name, attr,
183 &vp, flags, cr, vsap);
184 } else {
185 if (SMB_TREE_HAS_ACCESS(sr, ACE_ADD_FILE) != 0)
186 rc = smb_vop_create(dnode->vp, name, attr,
187 &vp, flags, cr, vsap);
188 }
189
190 if (do_audit) {
191 smb_audit_fini(sr,
192 is_dir ? ACE_ADD_SUBDIRECTORY : ACE_ADD_FILE,
193 dnode, rc == 0);
194 }
195
196 if (vsap != NULL)
197 kmem_free(vsap->vsa_aclentp, aclbsize);
198
199 if (rc != 0)
200 return (rc);
201
202 set_attr.sa_mask = 0;
203
204 /*
205 * Ideally we should be able to specify the owner and owning
206 * group at create time along with the ACL. Since we cannot
207 * do that right now, kcred is passed to smb_vop_setattr so it
208 * doesn't fail due to lack of permission.
209 */
210 if (fs_sd->sd_secinfo & SMB_OWNER_SECINFO) {
211 set_attr.sa_vattr.va_uid = fs_sd->sd_uid;
212 set_attr.sa_mask |= SMB_AT_UID;
213 }
214
215 if (fs_sd->sd_secinfo & SMB_GROUP_SECINFO) {
230 VN_RELE(vp);
231 }
232 } else {
233 /*
234 * For filesystems that don't support ACL-on-create, try
235 * to set the specified SD after create, which could actually
236 * fail because of conflicts between inherited security
237 * attributes upon creation and the specified SD.
238 *
239 * Passing kcred to smb_fsop_sdwrite() to overcome this issue.
240 */
241
242 if (is_dir) {
243 rc = smb_vop_mkdir(dnode->vp, name, attr, &vp,
244 flags, cr, NULL);
245 } else {
246 rc = smb_vop_create(dnode->vp, name, attr, &vp,
247 flags, cr, NULL);
248 }
249
250 if (do_audit) {
251 smb_audit_fini(sr,
252 is_dir ? ACE_ADD_SUBDIRECTORY : ACE_ADD_FILE,
253 dnode, rc == 0);
254 }
255
256 if (rc != 0)
257 return (rc);
258
259 *ret_snode = smb_node_lookup(sr, &sr->arg.open, cr, vp,
260 name, dnode, NULL);
261
262 if (*ret_snode != NULL) {
263 if (!smb_tree_has_feature(sr->tid_tree,
264 SMB_TREE_NFS_MOUNTED))
265 rc = smb_fsop_sdwrite(sr, kcr, *ret_snode,
266 fs_sd, 1);
267 } else {
268 rc = ENOMEM;
269 }
270
271 VN_RELE(vp);
272 }
273
274 if (rc != 0) {
275 if (is_dir)
318 ASSERT(sr->tid_tree);
319
320 if (SMB_TREE_CONTAINS_NODE(sr, dnode) == 0)
321 return (EACCES);
322
323 if (SMB_TREE_IS_READONLY(sr))
324 return (EROFS);
325
326 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
327 flags = SMB_IGNORE_CASE;
328 if (SMB_TREE_SUPPORTS_CATIA(sr))
329 flags |= SMB_CATIA;
330 if (SMB_TREE_SUPPORTS_ABE(sr))
331 flags |= SMB_ABE;
332
333 if (smb_is_stream_name(name)) {
334 fname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
335 sname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
336 smb_stream_parse_name(name, fname, sname);
337
338 rc = smb_fsop_create_file_with_stream(sr, cr, dnode,
339 fname, sname, flags, attr, ret_snode);
340
341 kmem_free(fname, MAXNAMELEN);
342 kmem_free(sname, MAXNAMELEN);
343 return (rc);
344 }
345
346 /* Not a named stream */
347
348 if (SMB_TREE_SUPPORTS_SHORTNAMES(sr) && smb_maybe_mangled(name)) {
349 longname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
350 rc = smb_unmangle(dnode, name, longname, MAXNAMELEN, flags);
351 kmem_free(longname, MAXNAMELEN);
352
353 if (rc == 0)
354 rc = EEXIST;
355 if (rc != ENOENT)
356 return (rc);
357 }
358
359 rc = smb_fsop_create_file(sr, cr, dnode, name, flags,
360 attr, ret_snode);
361 return (rc);
362
363 }
364
365
366 /*
367 * smb_fsop_create_file_with_stream
368 *
369 * Create named stream (sname) on file (fname), creating the file if it
370 * doesn't exist.
371 * If we created the file and then creation of the named stream fails,
372 * we delete the file.
373 * Since we use the real file name for the smb_vop_remove we
374 * clear the SMB_IGNORE_CASE flag to ensure a case sensitive
375 * match.
376 *
377 * Note that some stream "types" are "restricted" and only
378 * internal callers (cr == kcred) can create those.
379 */
380 static int
381 smb_fsop_create_file_with_stream(smb_request_t *sr, cred_t *cr,
382 smb_node_t *dnode, char *fname, char *sname, int flags,
383 smb_attr_t *attr, smb_node_t **ret_snode)
384 {
385 smb_node_t *fnode;
386 cred_t *kcr = zone_kcred();
387 int rc = 0;
388 boolean_t fcreate = B_FALSE;
389
390 ASSERT(ret_snode != NULL);
391
392 if (cr != kcr && smb_strname_restricted(sname))
393 return (EACCES);
394
395 /* Look up / create the unnamed stream, fname */
396 rc = smb_fsop_lookup(sr, cr, flags | SMB_FOLLOW_LINKS,
397 sr->tid_tree->t_snode, dnode, fname, &fnode);
398 if (rc == ENOENT) {
399 fcreate = B_TRUE;
400 rc = smb_fsop_create_file(sr, cr, dnode, fname, flags,
401 attr, &fnode);
402 }
403 if (rc != 0)
404 return (rc);
405
406 rc = smb_fsop_create_stream(sr, cr, dnode, fnode, sname, flags, attr,
407 ret_snode);
408
409 if (rc != 0) {
410 if (fcreate) {
411 flags &= ~SMB_IGNORE_CASE;
412 (void) smb_vop_remove(dnode->vp,
413 fnode->od_name, flags, cr);
414 }
415 }
416
417 smb_node_release(fnode);
418 return (rc);
419 }
420
421 /*
422 * smb_fsop_create_stream
423 *
424 * Create named stream (sname) on existing file (fnode).
425 *
426 * The second parameter of smb_vop_setattr() is set to
427 * NULL, even though an unnamed stream exists. This is
428 * because we want to set the UID and GID on the named
429 * stream in this case for consistency with the (unnamed
430 * stream) file (see comments for smb_vop_setattr()).
431 *
432 * Note that some stream "types" are "restricted" and only
433 * internal callers (cr == kcred) can create those.
434 */
435 int
436 smb_fsop_create_stream(smb_request_t *sr, cred_t *cr,
437 smb_node_t *dnode, smb_node_t *fnode, char *sname, int flags,
438 smb_attr_t *attr, smb_node_t **ret_snode)
439 {
440 smb_attr_t fattr;
441 vnode_t *xattrdvp;
442 vnode_t *vp;
443 cred_t *kcr = zone_kcred();
444 int rc = 0;
445
446 ASSERT(ret_snode != NULL);
447
448 if (cr != kcr && smb_strname_restricted(sname))
449 return (EACCES);
450
451 bzero(&fattr, sizeof (fattr));
452 fattr.sa_mask = SMB_AT_UID | SMB_AT_GID;
453 rc = smb_vop_getattr(fnode->vp, NULL, &fattr, 0, kcr);
454
455 if (rc == 0) {
456 /* create the named stream, sname */
457 rc = smb_vop_stream_create(fnode->vp, sname,
458 attr, &vp, &xattrdvp, flags, cr);
459 }
460 if (rc != 0)
461 return (rc);
462
463 attr->sa_vattr.va_uid = fattr.sa_vattr.va_uid;
464 attr->sa_vattr.va_gid = fattr.sa_vattr.va_gid;
465 attr->sa_mask = SMB_AT_UID | SMB_AT_GID;
466
467 rc = smb_vop_setattr(vp, NULL, attr, 0, kcr);
468 if (rc != 0) {
469 VN_RELE(xattrdvp);
470 VN_RELE(vp);
471 return (rc);
472 }
473
474 *ret_snode = smb_stream_node_lookup(sr, cr, fnode, xattrdvp,
475 vp, sname);
476
477 VN_RELE(xattrdvp);
478 VN_RELE(vp);
479
480 if (*ret_snode == NULL)
481 rc = ENOMEM;
482
483 /* notify change to the unnamed stream */
484 if (rc == 0)
485 smb_node_notify_change(dnode,
486 FILE_ACTION_ADDED_STREAM, fnode->od_name);
487
488 return (rc);
489 }
490
491 /*
492 * smb_fsop_create_file
493 */
494 static int
495 smb_fsop_create_file(smb_request_t *sr, cred_t *cr,
496 smb_node_t *dnode, char *name, int flags,
497 smb_attr_t *attr, smb_node_t **ret_snode)
498 {
499 smb_arg_open_t *op = &sr->sr_open;
500 vnode_t *vp;
501 int rc;
502
503 ASSERT(ret_snode != NULL);
504
505 #ifdef _KERNEL
506 smb_fssd_t fs_sd;
507 uint32_t secinfo;
508 uint32_t status;
509
510 if (op->sd) {
511 /*
512 * SD sent by client in Windows format. Needs to be
513 * converted to FS format. No inheritance.
514 */
515 secinfo = smb_sd_get_secinfo(op->sd);
516 smb_fssd_init(&fs_sd, secinfo, 0);
517
518 status = smb_sd_tofs(op->sd, &fs_sd);
519 if (status == NT_STATUS_SUCCESS) {
520 rc = smb_fsop_create_with_sd(sr, cr, dnode,
521 name, attr, ret_snode, &fs_sd);
522 } else {
523 rc = EINVAL;
524 }
526 } else if (sr->tid_tree->t_acltype == ACE_T) {
527 /*
528 * No incoming SD and filesystem is ZFS
529 * Server applies Windows inheritance rules,
530 * see smb_fsop_sdinherit() comments as to why.
531 */
532 smb_fssd_init(&fs_sd, SMB_ACL_SECINFO, 0);
533 rc = smb_fsop_sdinherit(sr, dnode, &fs_sd);
534 if (rc == 0) {
535 rc = smb_fsop_create_with_sd(sr, cr, dnode,
536 name, attr, ret_snode, &fs_sd);
537 }
538
539 smb_fssd_term(&fs_sd);
540 } else
541 #endif /* _KERNEL */
542 {
543 /*
544 * No incoming SD and filesystem is not ZFS
545 * let the filesystem handles the inheritance.
546 *
547 * fsop_create_with_sd handles auditing in the other cases.
548 * Handle it explicitly here.
549 */
550 boolean_t do_audit = smb_audit_init(sr);
551
552 rc = smb_vop_create(dnode->vp, name, attr, &vp,
553 flags, cr, NULL);
554
555 if (do_audit) {
556 smb_audit_fini(sr, ACE_ADD_FILE, dnode, rc == 0);
557 }
558
559 if (rc == 0) {
560 *ret_snode = smb_node_lookup(sr, op, cr, vp,
561 name, dnode, NULL);
562
563 if (*ret_snode == NULL)
564 rc = ENOMEM;
565
566 VN_RELE(vp);
567 }
568
569 }
570
571 if (rc == 0)
572 smb_node_notify_change(dnode, FILE_ACTION_ADDED, name);
573
574 return (rc);
575 }
576
577 /*
578 * smb_fsop_mkdir
674 rc = EINVAL;
675 smb_fssd_term(&fs_sd);
676 } else if (sr->tid_tree->t_acltype == ACE_T) {
677 /*
678 * No incoming SD and filesystem is ZFS
679 * Server applies Windows inheritance rules,
680 * see smb_fsop_sdinherit() comments as to why.
681 */
682 smb_fssd_init(&fs_sd, SMB_ACL_SECINFO, SMB_FSSD_FLAGS_DIR);
683 rc = smb_fsop_sdinherit(sr, dnode, &fs_sd);
684 if (rc == 0) {
685 rc = smb_fsop_create_with_sd(sr, cr, dnode,
686 name, attr, ret_snode, &fs_sd);
687 }
688
689 smb_fssd_term(&fs_sd);
690
691 } else
692 #endif /* _KERNEL */
693 {
694 /*
695 * fsop_create_with_sd handles auditing in the other cases.
696 * Handle it explicitly here.
697 */
698 boolean_t do_audit = smb_audit_init(sr);
699
700 rc = smb_vop_mkdir(dnode->vp, name, attr, &vp, flags, cr,
701 NULL);
702
703 if (do_audit) {
704 smb_audit_fini(sr, ACE_ADD_SUBDIRECTORY, dnode,
705 rc == 0);
706 }
707
708 if (rc == 0) {
709 *ret_snode = smb_node_lookup(sr, op, cr, vp, name,
710 dnode, NULL);
711
712 if (*ret_snode == NULL)
713 rc = ENOMEM;
714
715 VN_RELE(vp);
716 }
717 }
718
719 if (rc == 0)
720 smb_node_notify_change(dnode, FILE_ACTION_ADDED, name);
721
722 return (rc);
723 }
724
725 /*
726 * smb_fsop_remove
727 *
728 * All SMB functions should use this wrapper to ensure that
729 * the the calls are performed with the appropriate credentials.
730 * Please document any direct call to explain the reason
731 * for avoiding this wrapper.
732 *
733 * It is assumed that a reference exists on snode coming into this routine.
734 *
735 * A null smb_request might be passed to this function.
736 *
737 * Note that some stream "types" are "restricted" and only
738 * internal callers (cr == kcred) can remove those.
739 */
740 int
741 smb_fsop_remove(
742 smb_request_t *sr,
743 cred_t *cr,
744 smb_node_t *dnode,
745 char *name,
746 uint32_t flags)
747 {
748 smb_node_t *fnode;
749 char *longname;
750 char *fname;
751 char *sname;
752 int rc;
753
754 ASSERT(cr);
755 /*
756 * The state of the node could be SMB_NODE_STATE_DESTROYING if this
757 * function is called during the deletion of the node (because of
758 * DELETE_ON_CLOSE).
759 */
760 ASSERT(dnode);
761 ASSERT(dnode->n_magic == SMB_NODE_MAGIC);
762
763 if (SMB_TREE_CONTAINS_NODE(sr, dnode) == 0 ||
764 SMB_TREE_HAS_ACCESS(sr, ACE_DELETE) == 0)
765 return (EACCES);
766
767 if (SMB_TREE_IS_READONLY(sr))
768 return (EROFS);
769
770 fname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
771 sname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
772
773 if (dnode->flags & NODE_XATTR_DIR) {
774 if (cr != zone_kcred() && smb_strname_restricted(name)) {
775 rc = EACCES;
776 goto out;
777 }
778
779 fnode = dnode->n_dnode;
780 rc = smb_vop_stream_remove(fnode->vp, name, flags, cr);
781
782 /* notify change to the unnamed stream */
783 if ((rc == 0) && fnode->n_dnode) {
784 smb_node_notify_change(fnode->n_dnode,
785 FILE_ACTION_REMOVED_STREAM, fnode->od_name);
786 }
787 } else if (smb_is_stream_name(name)) {
788 smb_stream_parse_name(name, fname, sname);
789
790 if (cr != zone_kcred() && smb_strname_restricted(sname)) {
791 rc = EACCES;
792 goto out;
793 }
794
795 /*
796 * Look up the unnamed stream (i.e. fname).
797 * Unmangle processing will be done on fname
798 * as well as any link target.
799 */
800
801 rc = smb_fsop_lookup(sr, cr, flags | SMB_FOLLOW_LINKS,
802 sr->tid_tree->t_snode, dnode, fname, &fnode);
803
804 if (rc != 0) {
805 goto out;
806 }
807
808 /*
809 * XXX
810 * Need to find out what permission is required by NTFS
811 * to remove a stream.
812 */
813 rc = smb_vop_stream_remove(fnode->vp, sname, flags, cr);
814
815 smb_node_release(fnode);
816
817 /* notify change to the unnamed stream */
818 if (rc == 0) {
819 smb_node_notify_change(dnode,
820 FILE_ACTION_REMOVED_STREAM, fname);
821 }
822 } else {
823 rc = smb_vop_remove(dnode->vp, name, flags, cr);
824
825 if (rc == ENOENT) {
826 if (!SMB_TREE_SUPPORTS_SHORTNAMES(sr) ||
827 !smb_maybe_mangled(name)) {
828 goto out;
829 }
830 longname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
831
832 if (SMB_TREE_SUPPORTS_ABE(sr))
833 flags |= SMB_ABE;
834
835 rc = smb_unmangle(dnode, name, longname, MAXNAMELEN,
836 flags);
837
838 if (rc == 0) {
839 /*
840 * longname is the real (case-sensitive)
841 * on-disk name.
842 * We make sure we do a remove on this exact
843 * name, as the name was mangled and denotes
844 * a unique file.
845 */
846 flags &= ~SMB_IGNORE_CASE;
847 rc = smb_vop_remove(dnode->vp, longname,
848 flags, cr);
849 }
850 kmem_free(longname, MAXNAMELEN);
851 }
852 if (rc == 0) {
853 smb_node_notify_change(dnode,
854 FILE_ACTION_REMOVED, name);
855 }
856 }
857
858 out:
859 kmem_free(fname, MAXNAMELEN);
860 kmem_free(sname, MAXNAMELEN);
861
862 return (rc);
863 }
864
865 /*
866 * smb_fsop_remove_streams
867 *
868 * This function removes a file's streams without removing the
869 * file itself.
870 *
871 * It is assumed that fnode is not a link.
872 */
873 uint32_t
874 smb_fsop_remove_streams(smb_request_t *sr, cred_t *cr, smb_node_t *fnode)
875 {
876 int rc, flags = 0;
877 smb_odir_t *od;
878 smb_odirent_t *odirent;
884 ASSERT(fnode);
885 ASSERT(fnode->n_magic == SMB_NODE_MAGIC);
886 ASSERT(fnode->n_state != SMB_NODE_STATE_DESTROYING);
887
888 if (SMB_TREE_CONTAINS_NODE(sr, fnode) == 0)
889 return (NT_STATUS_ACCESS_DENIED);
890
891 if (SMB_TREE_IS_READONLY(sr))
892 return (NT_STATUS_ACCESS_DENIED);
893
894 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
895 flags = SMB_IGNORE_CASE;
896
897 if (SMB_TREE_SUPPORTS_CATIA(sr))
898 flags |= SMB_CATIA;
899
900 status = smb_odir_openat(sr, fnode, &od);
901 switch (status) {
902 case 0:
903 break;
904 case NT_STATUS_OBJECT_NAME_NOT_FOUND:
905 case NT_STATUS_NO_SUCH_FILE:
906 case NT_STATUS_NOT_SUPPORTED:
907 /* No streams to remove. */
908 return (0);
909 default:
910 return (status);
911 }
912
913 odirent = kmem_alloc(sizeof (smb_odirent_t), KM_SLEEP);
914 for (;;) {
915 rc = smb_odir_read(sr, od, odirent, &eos);
916 if ((rc != 0) || (eos))
917 break;
918 (void) smb_vop_remove(od->d_dnode->vp, odirent->od_name,
919 flags, cr);
920 }
921 kmem_free(odirent, sizeof (smb_odirent_t));
922 if (eos && rc == ENOENT)
923 rc = 0;
924
1183 /*
1184 * Note: There is no need to check SMB_TREE_IS_CASEINSENSITIVE
1185 * here.
1186 *
1187 * A case-sensitive rename is always done in this routine
1188 * because we are using the on-disk name from an earlier lookup.
1189 * If a mangled name was passed in by the caller (denoting a
1190 * deterministic lookup), then the exact file must be renamed
1191 * (i.e. SMB_IGNORE_CASE must not be passed to VOP_RENAME, or
1192 * else the underlying file system might return a "first-match"
1193 * on this on-disk name, possibly resulting in the wrong file).
1194 */
1195
1196 if (SMB_TREE_SUPPORTS_CATIA(sr))
1197 flags |= SMB_CATIA;
1198
1199 /*
1200 * XXX: Lock required through smb_node_release() below?
1201 */
1202
1203 /*
1204 * Don't audit the lookup
1205 */
1206 smb_audit_save();
1207 rc = smb_vop_lookup(from_dnode->vp, from_name, &from_vp, NULL,
1208 flags, &ret_flags, NULL, &from_attr, cr);
1209 smb_audit_load();
1210
1211 if (rc != 0)
1212 return (rc);
1213
1214 if (from_attr.sa_dosattr & FILE_ATTRIBUTE_REPARSE_POINT) {
1215 VN_RELE(from_vp);
1216 return (EACCES);
1217 }
1218
1219 isdir = ((from_attr.sa_dosattr & FILE_ATTRIBUTE_DIRECTORY) != 0);
1220
1221 if ((isdir && SMB_TREE_HAS_ACCESS(sr,
1222 ACE_DELETE_CHILD | ACE_ADD_SUBDIRECTORY) !=
1223 (ACE_DELETE_CHILD | ACE_ADD_SUBDIRECTORY)) ||
1224 (!isdir && SMB_TREE_HAS_ACCESS(sr, ACE_DELETE | ACE_ADD_FILE) !=
1225 (ACE_DELETE | ACE_ADD_FILE))) {
1226 VN_RELE(from_vp);
1227 return (EACCES);
1228 }
1229
1230 /*
1231 * SMB checks access on open and retains an access granted
1232 * mask for use while the file is open. ACL changes should
1233 * not affect access to an open file.
1234 *
1235 * If the rename is being performed on an ofile:
1236 * - Check the ofile's access granted mask to see if the
1237 * rename is permitted - requires DELETE access.
1238 * - If the file system does access checking, set the
1239 * ATTR_NOACLCHECK flag to ensure that the file system
1240 * does not check permissions on subsequent calls.
1241 */
1242 if (sr && sr->fid_ofile) {
1243 rc = smb_ofile_access(sr->fid_ofile, cr, DELETE);
1244 if (rc != NT_STATUS_SUCCESS) {
1245 VN_RELE(from_vp);
1246 return (EACCES);
1247 }
1248
1249 /* TODO: rename drops ATTR_NOACLCHECK, so this is a no-op. */
1250 if (smb_tree_has_feature(sr->tid_tree,
1251 SMB_TREE_ACEMASKONACCESS))
1252 flags = ATTR_NOACLCHECK;
1253 }
1254
1255 rc = smb_vop_rename(from_dnode->vp, from_name, to_dnode->vp,
1256 to_name, flags, cr);
1257
1258 if (rc == 0) {
1259 from_snode = smb_node_lookup(sr, NULL, cr, from_vp, from_name,
1260 from_dnode, NULL);
1261
1262 if (from_snode == NULL) {
1263 rc = ENOMEM;
1264 } else {
1265 smb_node_rename(from_dnode, from_snode,
1266 to_dnode, to_name);
1267 smb_node_release(from_snode);
1268 }
1269 }
1314 int rc = 0;
1315 int flags = 0;
1316 uint_t sa_mask;
1317
1318 ASSERT(cr);
1319 ASSERT(snode);
1320 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1321 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1322
1323 if (SMB_TREE_CONTAINS_NODE(sr, snode) == 0)
1324 return (EACCES);
1325
1326 if (SMB_TREE_IS_READONLY(sr))
1327 return (EROFS);
1328
1329 if (SMB_TREE_HAS_ACCESS(sr,
1330 ACE_WRITE_ATTRIBUTES | ACE_WRITE_NAMED_ATTRS) == 0)
1331 return (EACCES);
1332
1333 /*
1334 * SMB checks access on open and retains an access granted
1335 * mask for use while the file is open. ACL changes should
1336 * not affect access to an open file.
1337 *
1338 * If the setattr is being performed on an ofile:
1339 * - Check the ofile's access granted mask to see if the
1340 * setattr is permitted.
1341 * UID, GID - require WRITE_OWNER
1342 * SIZE, ALLOCSZ - require FILE_WRITE_DATA
1343 * all other attributes require FILE_WRITE_ATTRIBUTES
1344 *
1345 * - If the file system does access checking, set the
1346 * ATTR_NOACLCHECK flag to ensure that the file system
1347 * does not check permissions on subsequent calls.
1348 */
1349 if (sr && sr->fid_ofile) {
1350 sa_mask = set_attr->sa_mask;
1351 access = 0;
1352
1353 if (sa_mask & (SMB_AT_SIZE | SMB_AT_ALLOCSZ)) {
1369
1370 if (smb_tree_has_feature(sr->tid_tree,
1371 SMB_TREE_ACEMASKONACCESS))
1372 flags = ATTR_NOACLCHECK;
1373 }
1374
1375 unnamed_node = SMB_IS_STREAM(snode);
1376
1377 if (unnamed_node) {
1378 ASSERT(unnamed_node->n_magic == SMB_NODE_MAGIC);
1379 ASSERT(unnamed_node->n_state != SMB_NODE_STATE_DESTROYING);
1380 unnamed_vp = unnamed_node->vp;
1381 }
1382
1383 rc = smb_vop_setattr(snode->vp, unnamed_vp, set_attr, flags, cr);
1384 return (rc);
1385 }
1386
1387 /*
1388 * Support for SMB2 setinfo FileValidDataLengthInformation.
1389 * Free (zero out) data in the range off, off+len
1390 */
1391 int
1392 smb_fsop_freesp(
1393 smb_request_t *sr,
1394 cred_t *cr,
1395 smb_ofile_t *ofile,
1396 off64_t off,
1397 off64_t len)
1398 {
1399 flock64_t flk;
1400 smb_node_t *node = ofile->f_node;
1401 uint32_t status;
1402 uint32_t access = FILE_WRITE_DATA;
1403 int rc;
1404
1405 ASSERT(cr);
1406 ASSERT(node);
1407 ASSERT(node->n_magic == SMB_NODE_MAGIC);
1408 ASSERT(node->n_state != SMB_NODE_STATE_DESTROYING);
1409
1410 if (SMB_TREE_CONTAINS_NODE(sr, node) == 0)
1411 return (EACCES);
1412
1413 if (SMB_TREE_IS_READONLY(sr))
1414 return (EROFS);
1415
1416 if (SMB_TREE_HAS_ACCESS(sr, access) == 0)
1417 return (EACCES);
1418
1419 /*
1420 * SMB checks access on open and retains an access granted
1421 * mask for use while the file is open. ACL changes should
1422 * not affect access to an open file.
1423 *
1424 * If the setattr is being performed on an ofile:
1425 * - Check the ofile's access granted mask to see if this
1426 * modification should be permitted (FILE_WRITE_DATA)
1427 */
1428 status = smb_ofile_access(sr->fid_ofile, cr, access);
1429 if (status != NT_STATUS_SUCCESS)
1430 return (EACCES);
1431
1432 bzero(&flk, sizeof (flk));
1433 flk.l_start = off;
1434 flk.l_len = len;
1435
1436 rc = smb_vop_space(node->vp, F_FREESP, &flk, FWRITE, 0LL, cr);
1437 return (rc);
1438 }
1439
1440 /*
1441 * smb_fsop_read
1442 *
1443 * All SMB functions should use this wrapper to ensure that
1444 * the the calls are performed with the appropriate credentials.
1445 * Please document any direct call to explain the reason
1446 * for avoiding this wrapper.
1447 *
1448 * It is assumed that a reference exists on snode coming into this routine.
1449 * Note that ofile may be different from sr->fid_ofile, or may be NULL.
1450 */
1451 int
1452 smb_fsop_read(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
1453 smb_ofile_t *ofile, uio_t *uio, int ioflag)
1454 {
1455 caller_context_t ct;
1456 cred_t *kcr = zone_kcred();
1457 uint32_t amask;
1458 int svmand;
1459 int rc;
1460
1461 ASSERT(cr);
1462 ASSERT(snode);
1463 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1464 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1465
1466 ASSERT(sr);
1467
1468 if (ofile != NULL) {
1469 /*
1470 * Check tree access. Not SMB_TREE_HAS_ACCESS
1471 * because we need to use ofile->f_tree
1472 */
1473 if ((ofile->f_tree->t_access & ACE_READ_DATA) == 0)
1474 return (EACCES);
1475
1476 /*
1477 * Check ofile access. Use in-line smb_ofile_access
1478 * so we can check both amask bits at the same time.
1479 * If any bit in amask is granted, allow this read.
1480 */
1481 amask = FILE_READ_DATA;
1482 if (sr->smb_flg2 & SMB_FLAGS2_READ_IF_EXECUTE)
1483 amask |= FILE_EXECUTE;
1484 if (cr != kcr && (ofile->f_granted_access & amask) == 0)
1485 return (EACCES);
1486 }
1487
1488 /*
1489 * Streams permission are checked against the unnamed stream,
1490 * but in FS level they have their own permissions. To avoid
1491 * rejection by FS due to lack of permission on the actual
1492 * extended attr kcred is passed for streams.
1493 */
1494 if (SMB_IS_STREAM(snode))
1495 cr = kcr;
1496
1497 smb_node_start_crit(snode, RW_READER);
1498 rc = nbl_svmand(snode->vp, kcr, &svmand);
1499 if (rc) {
1500 smb_node_end_crit(snode);
1501 return (rc);
1502 }
1503
1504 /*
1505 * Note: SMB allows a zero-byte read, which should not
1506 * conflict with any locks. However nbl_lock_conflict
1507 * takes a zero-byte length as lock to EOF, so we must
1508 * special case that here.
1509 */
1510 if (uio->uio_resid > 0) {
1511 ct = smb_ct;
1512 if (ofile != NULL)
1513 ct.cc_pid = ofile->f_uniqid;
1514 rc = nbl_lock_conflict(snode->vp, NBL_READ, uio->uio_loffset,
1515 uio->uio_resid, svmand, &ct);
1516 if (rc != 0) {
1517 smb_node_end_crit(snode);
1518 return (ERANGE);
1519 }
1520 }
1521
1522 rc = smb_vop_read(snode->vp, uio, ioflag, cr);
1523 smb_node_end_crit(snode);
1524
1525 return (rc);
1526 }
1527
1528 /*
1529 * smb_fsop_write
1530 *
1531 * It is assumed that a reference exists on snode coming into this routine.
1532 * Note that ofile may be different from sr->fid_ofile, or may be NULL.
1533 */
1534 int
1535 smb_fsop_write(
1536 smb_request_t *sr,
1537 cred_t *cr,
1538 smb_node_t *snode,
1539 smb_ofile_t *ofile,
1540 uio_t *uio,
1541 uint32_t *lcount,
1542 int ioflag)
1543 {
1544 caller_context_t ct;
1545 smb_attr_t attr;
1546 cred_t *kcr = zone_kcred();
1547 smb_node_t *u_node;
1548 vnode_t *u_vp = NULL;
1549 vnode_t *vp;
1550 uint32_t amask;
1551 int svmand;
1552 int rc;
1553
1554 ASSERT(cr);
1555 ASSERT(snode);
1556 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1557 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1558
1559 ASSERT(sr);
1560 vp = snode->vp;
1561
1562 if (ofile != NULL) {
1563 amask = FILE_WRITE_DATA | FILE_APPEND_DATA;
1564
1565 /* Check tree access. */
1566 if ((ofile->f_tree->t_access & amask) == 0)
1567 return (EROFS);
1568
1569 /*
1570 * Check ofile access. Use in-line smb_ofile_access
1571 * so we can check both amask bits at the same time.
1572 * If any bit in amask is granted, allow this write.
1573 */
1574 if (cr != kcr && (ofile->f_granted_access & amask) == 0)
1575 return (EACCES);
1576 }
1577
1578 /*
1579 * Streams permission are checked against the unnamed stream,
1580 * but in FS level they have their own permissions. To avoid
1581 * rejection by FS due to lack of permission on the actual
1582 * extended attr kcred is passed for streams.
1583 */
1584 u_node = SMB_IS_STREAM(snode);
1585 if (u_node != NULL) {
1586 ASSERT(u_node->n_magic == SMB_NODE_MAGIC);
1587 ASSERT(u_node->n_state != SMB_NODE_STATE_DESTROYING);
1588 u_vp = u_node->vp;
1589 cr = kcr;
1590 }
1591
1592 smb_node_start_crit(snode, RW_WRITER);
1593 rc = nbl_svmand(vp, kcr, &svmand);
1594 if (rc) {
1595 smb_node_end_crit(snode);
1596 return (rc);
1597 }
1598
1599 /*
1600 * Note: SMB allows a zero-byte write, which should not
1601 * conflict with any locks. However nbl_lock_conflict
1602 * takes a zero-byte length as lock to EOF, so we must
1603 * special case that here.
1604 */
1605 if (uio->uio_resid > 0) {
1606 ct = smb_ct;
1607 if (ofile != NULL)
1608 ct.cc_pid = ofile->f_uniqid;
1609 rc = nbl_lock_conflict(vp, NBL_WRITE, uio->uio_loffset,
1610 uio->uio_resid, svmand, &ct);
1611 if (rc != 0) {
1612 smb_node_end_crit(snode);
1613 return (ERANGE);
1614 }
1615 }
1616
1617 rc = smb_vop_write(vp, uio, ioflag, lcount, cr);
1618
1619 /*
1620 * Once the mtime has been set via this ofile, the
1621 * automatic mtime changes from writes via this ofile
1622 * should cease, preserving the mtime that was set.
1623 * See: [MS-FSA] 2.1.5.14 and smb_node_setattr.
1624 *
1625 * The VFS interface does not offer a way to ask it to
1626 * skip the mtime updates, so we simulate the desired
1627 * behavior by re-setting the mtime after writes on a
1628 * handle where the mtime has been set.
1629 */
1630 if (ofile != NULL &&
1631 (ofile->f_pending_attr.sa_mask & SMB_AT_MTIME) != 0) {
1632 bcopy(&ofile->f_pending_attr, &attr, sizeof (attr));
1633 attr.sa_mask = SMB_AT_MTIME;
1634 (void) smb_vop_setattr(vp, u_vp, &attr, 0, kcr);
1635 }
1636
1637 smb_node_end_crit(snode);
1638
1639 return (rc);
1640 }
1641
1642 /*
1643 * Find the next allocated range starting at or after
1644 * the offset (*datap), returning the start/end of
1645 * that range in (*datap, *holep)
1646 */
1647 int
1648 smb_fsop_next_alloc_range(
1649 cred_t *cr,
1650 smb_node_t *node,
1651 off64_t *datap,
1652 off64_t *holep)
1653 {
1654 int err;
1655
1656 err = smb_vop_ioctl(node->vp, _FIO_SEEK_DATA, datap, cr);
1657 if (err != 0)
1658 return (err);
1659
1660 *holep = *datap;
1661 err = smb_vop_ioctl(node->vp, _FIO_SEEK_HOLE, holep, cr);
1662
1663 return (err);
1664 }
1665
1666 /*
1667 * smb_fsop_statfs
1668 *
1669 * This is a wrapper function used for stat operations.
1670 */
1671 int
1672 smb_fsop_statfs(
1673 cred_t *cr,
1674 smb_node_t *snode,
1675 struct statvfs64 *statp)
1676 {
1677 ASSERT(cr);
1678 ASSERT(snode);
1679 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1680 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1681
1682 return (smb_vop_statfs(snode->vp, statp, cr));
1683 }
1684
1685 /*
1686 * smb_fsop_access
1687 *
1688 * Named streams do not have separate permissions from the associated
1689 * unnamed stream. Thus, if node is a named stream, the permissions
1690 * check will be performed on the associated unnamed stream.
1691 *
1692 * However, our named streams do have their own quarantine attribute,
1693 * separate from that on the unnamed stream. If READ or EXECUTE
1694 * access has been requested on a named stream, an additional access
1695 * check is performed on the named stream in case it has been
1696 * quarantined. kcred is used to avoid issues with the permissions
1697 * set on the extended attribute file representing the named stream.
1698 *
1699 * Note that some stream "types" are "restricted" and only
1700 * internal callers (cr == kcred) can access those.
1701 */
1702 int
1703 smb_fsop_access(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
1704 uint32_t faccess)
1705 {
1706 int access = 0;
1707 int error;
1708 vnode_t *dir_vp;
1709 boolean_t acl_check = B_TRUE;
1710 smb_node_t *unnamed_node;
1711
1712 ASSERT(sr);
1713 ASSERT(cr);
1714 ASSERT(snode);
1715 ASSERT(snode->n_magic == SMB_NODE_MAGIC);
1716 ASSERT(snode->n_state != SMB_NODE_STATE_DESTROYING);
1717
1718 if (SMB_TREE_IS_READONLY(sr)) {
1719 if (faccess & (FILE_WRITE_DATA|FILE_APPEND_DATA|
1720 FILE_WRITE_EA|FILE_DELETE_CHILD|FILE_WRITE_ATTRIBUTES|
1721 DELETE|WRITE_DAC|WRITE_OWNER)) {
1722 return (NT_STATUS_ACCESS_DENIED);
1723 }
1724 }
1725
1726 if (smb_node_is_reparse(snode) && (faccess & DELETE))
1727 return (NT_STATUS_ACCESS_DENIED);
1728
1729 unnamed_node = SMB_IS_STREAM(snode);
1730 if (unnamed_node) {
1731 cred_t *kcr = zone_kcred();
1732
1733 ASSERT(unnamed_node->n_magic == SMB_NODE_MAGIC);
1734 ASSERT(unnamed_node->n_state != SMB_NODE_STATE_DESTROYING);
1735
1736 if (cr != kcr && smb_strname_restricted(snode->od_name))
1737 return (NT_STATUS_ACCESS_DENIED);
1738
1739 /*
1740 * Perform VREAD access check on the named stream in case it
1741 * is quarantined. kcred is passed to smb_vop_access so it
1742 * doesn't fail due to lack of permission.
1743 */
1744 if (faccess & (FILE_READ_DATA | FILE_EXECUTE)) {
1745 error = smb_vop_access(snode->vp, VREAD,
1746 0, NULL, kcr);
1747 if (error)
1748 return (NT_STATUS_ACCESS_DENIED);
1749 }
1750
1751 /*
1752 * Streams authorization should be performed against the
1753 * unnamed stream.
1754 */
1755 snode = unnamed_node;
1756 }
1757
1758 if (faccess & ACCESS_SYSTEM_SECURITY) {
1759 /*
1760 * This permission is required for reading/writing SACL and
1761 * it's not part of DACL. It's only granted via proper
1762 * privileges.
1763 */
1764 if ((sr->uid_user->u_privileges &
1765 (SMB_USER_PRIV_BACKUP |
1766 SMB_USER_PRIV_RESTORE |
1789 * FS doesn't understand 32-bit mask, need to map
1790 */
1791 if (faccess & (FILE_WRITE_DATA | FILE_APPEND_DATA))
1792 access |= VWRITE;
1793
1794 if (faccess & FILE_READ_DATA)
1795 access |= VREAD;
1796
1797 if (faccess & FILE_EXECUTE)
1798 access |= VEXEC;
1799
1800 error = smb_vop_access(snode->vp, access, 0, NULL, cr);
1801 }
1802
1803 return ((error) ? NT_STATUS_ACCESS_DENIED : NT_STATUS_SUCCESS);
1804 }
1805
1806 /*
1807 * smb_fsop_lookup_name()
1808 *
1809 * Lookup both the file and stream specified in 'name'.
1810 * If name indicates that the file is a stream file, perform
1811 * stream specific lookup, otherwise call smb_fsop_lookup.
1812 *
1813 * On success, returns the found node in *ret_snode. This will be either a named
1814 * or unnamed stream node, depending on the name specified.
1815 *
1816 * Return an error if the looked-up file is in outside the tree.
1817 * (Required when invoked from open path.)
1818 *
1819 * Case sensitivity flags (SMB_IGNORE_CASE, SMB_CASE_SENSITIVE):
1820 * if SMB_CASE_SENSITIVE is set, the SMB_IGNORE_CASE flag will NOT be set
1821 * based on the tree's case sensitivity. However, if the SMB_IGNORE_CASE
1822 * flag is set in the flags value passed as a parameter, a case insensitive
1823 * lookup WILL be done (regardless of whether SMB_CASE_SENSITIVE is set
1824 * or not).
1825 */
1826
1827 int
1828 smb_fsop_lookup_name(
1829 smb_request_t *sr,
1830 cred_t *cr,
1831 int flags,
1832 smb_node_t *root_node,
1833 smb_node_t *dnode,
1834 char *name,
1835 smb_node_t **ret_snode)
1836 {
1837 char *sname = NULL;
1838 int rc;
1839 smb_node_t *tmp_node;
1840
1841 ASSERT(ret_snode != NULL);
1842
1843 rc = smb_fsop_lookup_file(sr, cr, flags, root_node, dnode, name,
1844 &sname, ret_snode);
1845
1846 if (rc != 0 || sname == NULL)
1847 return (rc);
1848
1849 tmp_node = *ret_snode;
1850 rc = smb_fsop_lookup_stream(sr, cr, flags, root_node, tmp_node, sname,
1851 ret_snode);
1852 kmem_free(sname, MAXNAMELEN);
1853 smb_node_release(tmp_node);
1854
1855 return (rc);
1856 }
1857
1858 /*
1859 * smb_fsop_lookup_file()
1860 *
1861 * Look up of the file portion of 'name'. If a Stream is specified,
1862 * return the stream name in 'sname', which this allocates.
1863 * The caller must free 'sname'.
1864 *
1865 * Return an error if the looked-up file is outside the tree.
1866 * (Required when invoked from open path.)
1867 *
1868 * Case sensitivity flags (SMB_IGNORE_CASE, SMB_CASE_SENSITIVE):
1869 * if SMB_CASE_SENSITIVE is set, the SMB_IGNORE_CASE flag will NOT be set
1870 * based on the tree's case sensitivity. However, if the SMB_IGNORE_CASE
1871 * flag is set in the flags value passed as a parameter, a case insensitive
1872 * lookup WILL be done (regardless of whether SMB_CASE_SENSITIVE is set
1873 * or not).
1874 */
1875
1876 int
1877 smb_fsop_lookup_file(
1878 smb_request_t *sr,
1879 cred_t *cr,
1880 int flags,
1881 smb_node_t *root_node,
1882 smb_node_t *dnode,
1883 char *name,
1884 char **sname,
1885 smb_node_t **ret_snode)
1886 {
1887 char *fname;
1888 int rc;
1889
1890 ASSERT(cr);
1891 ASSERT(dnode);
1892 ASSERT(dnode->n_magic == SMB_NODE_MAGIC);
1893 ASSERT(dnode->n_state != SMB_NODE_STATE_DESTROYING);
1894 ASSERT(ret_snode != NULL);
1895
1896 /*
1897 * The following check is required for streams processing, below
1898 */
1899
1900 if (!(flags & SMB_CASE_SENSITIVE)) {
1901 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
1902 flags |= SMB_IGNORE_CASE;
1903 }
1904
1905 *sname = NULL;
1906 if (smb_is_stream_name(name)) {
1907 *sname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1908 fname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1909 smb_stream_parse_name(name, fname, *sname);
1910
1911 /*
1912 * Look up the unnamed stream (i.e. fname).
1913 * Unmangle processing will be done on fname
1914 * as well as any link target.
1915 */
1916 rc = smb_fsop_lookup(sr, cr, flags, root_node, dnode,
1917 fname, ret_snode);
1918 kmem_free(fname, MAXNAMELEN);
1919 } else {
1920 rc = smb_fsop_lookup(sr, cr, flags, root_node, dnode, name,
1921 ret_snode);
1922 }
1923
1924 if (rc == 0) {
1925 ASSERT(ret_snode);
1926 if (SMB_TREE_CONTAINS_NODE(sr, *ret_snode) == 0) {
1927 smb_node_release(*ret_snode);
1928 *ret_snode = NULL;
1929 rc = EACCES;
1930 }
1931 }
1932
1933 if (rc != 0 && *sname != NULL) {
1934 kmem_free(*sname, MAXNAMELEN);
1935 *sname = NULL;
1936 }
1937 return (rc);
1938 }
1939
1940 /*
1941 * smb_fsop_lookup_stream
1942 *
1943 * The file exists, see if the stream exists.
1944 */
1945 int
1946 smb_fsop_lookup_stream(
1947 smb_request_t *sr,
1948 cred_t *cr,
1949 int flags,
1950 smb_node_t *root_node,
1951 smb_node_t *fnode,
1952 char *sname,
1953 smb_node_t **ret_snode)
1954 {
1955 char *od_name;
1956 vnode_t *xattrdirvp;
1957 vnode_t *vp;
1958 int rc;
1959
1960 /*
1961 * The following check is required for streams processing, below
1962 */
1963
1964 if (!(flags & SMB_CASE_SENSITIVE)) {
1965 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
1966 flags |= SMB_IGNORE_CASE;
1967 }
1968
1969 od_name = kmem_alloc(MAXNAMELEN, KM_SLEEP);
1970
1971 /*
1972 * od_name is the on-disk name of the stream, except
1973 * without the prepended stream prefix (SMB_STREAM_PREFIX)
1974 */
1975
1976 rc = smb_vop_stream_lookup(fnode->vp, sname, &vp, od_name,
1977 &xattrdirvp, flags, root_node->vp, cr);
1978
1979 if (rc != 0) {
1980 kmem_free(od_name, MAXNAMELEN);
1981 return (rc);
1982 }
1983
1984 *ret_snode = smb_stream_node_lookup(sr, cr, fnode, xattrdirvp,
1985 vp, od_name);
1986
1987 kmem_free(od_name, MAXNAMELEN);
1988 VN_RELE(xattrdirvp);
1989 VN_RELE(vp);
1990
1991 if (*ret_snode == NULL)
1992 return (ENOMEM);
1993
1994 return (rc);
1995 }
1996
1997 /*
1998 * smb_fsop_lookup
1999 *
2000 * All SMB functions should use this smb_vop_lookup wrapper to ensure that
2001 * the smb_vop_lookup is performed with the appropriate credentials and using
2002 * case insensitive compares. Please document any direct call to smb_vop_lookup
2003 * to explain the reason for avoiding this wrapper.
2004 *
2005 * It is assumed that a reference exists on dnode coming into this routine
2006 * (and that it is safe from deallocation).
2007 *
2008 * Same with the root_node.
2009 *
2010 * *ret_snode is returned with a reference upon success. No reference is
2011 * taken if an error is returned.
2012 *
2013 * Note: The returned ret_snode may be in a child mount. This is ok for
2045 ASSERT(cr);
2046 ASSERT(dnode);
2047 ASSERT(dnode->n_magic == SMB_NODE_MAGIC);
2048 ASSERT(dnode->n_state != SMB_NODE_STATE_DESTROYING);
2049
2050 if (name == NULL)
2051 return (EINVAL);
2052
2053 if (SMB_TREE_CONTAINS_NODE(sr, dnode) == 0)
2054 return (EACCES);
2055
2056 if (!(flags & SMB_CASE_SENSITIVE)) {
2057 if (SMB_TREE_IS_CASEINSENSITIVE(sr))
2058 flags |= SMB_IGNORE_CASE;
2059 }
2060 if (SMB_TREE_SUPPORTS_CATIA(sr))
2061 flags |= SMB_CATIA;
2062 if (SMB_TREE_SUPPORTS_ABE(sr))
2063 flags |= SMB_ABE;
2064
2065 /*
2066 * Can have "" or "." when opening named streams on a directory.
2067 */
2068 if (name[0] == '\0' || (name[0] == '.' && name[1] == '\0')) {
2069 smb_node_ref(dnode);
2070 *ret_snode = dnode;
2071 return (0);
2072 }
2073
2074 od_name = kmem_zalloc(MAXNAMELEN, KM_SLEEP);
2075
2076 rc = smb_vop_lookup(dnode->vp, name, &vp, od_name, flags,
2077 &ret_flags, root_node ? root_node->vp : NULL, &attr, cr);
2078
2079 if (rc != 0) {
2080 if (!SMB_TREE_SUPPORTS_SHORTNAMES(sr) ||
2081 !smb_maybe_mangled(name)) {
2082 kmem_free(od_name, MAXNAMELEN);
2083 return (rc);
2084 }
2085
2086 longname = kmem_alloc(MAXNAMELEN, KM_SLEEP);
2087 rc = smb_unmangle(dnode, name, longname, MAXNAMELEN, flags);
2088 if (rc != 0) {
2089 kmem_free(od_name, MAXNAMELEN);
2090 kmem_free(longname, MAXNAMELEN);
2091 return (rc);
2092 }
2093
2094 /*
2095 * longname is the real (case-sensitive)
2100 */
2101
2102 if (flags & SMB_IGNORE_CASE)
2103 flags &= ~SMB_IGNORE_CASE;
2104
2105 rc = smb_vop_lookup(dnode->vp, longname, &vp, od_name,
2106 flags, &ret_flags, root_node ? root_node->vp : NULL, &attr,
2107 cr);
2108
2109 kmem_free(longname, MAXNAMELEN);
2110
2111 if (rc != 0) {
2112 kmem_free(od_name, MAXNAMELEN);
2113 return (rc);
2114 }
2115 }
2116
2117 if ((flags & SMB_FOLLOW_LINKS) && (vp->v_type == VLNK) &&
2118 ((attr.sa_dosattr & FILE_ATTRIBUTE_REPARSE_POINT) == 0)) {
2119 rc = smb_pathname(sr, od_name, FOLLOW, root_node, dnode,
2120 &lnk_dnode, &lnk_target_node, cr, NULL);
2121
2122 if (rc != 0) {
2123 /*
2124 * The link is assumed to be for the last component
2125 * of a path. Hence any ENOTDIR error will be returned
2126 * as ENOENT.
2127 */
2128 if (rc == ENOTDIR)
2129 rc = ENOENT;
2130
2131 VN_RELE(vp);
2132 kmem_free(od_name, MAXNAMELEN);
2133 return (rc);
2134 }
2135
2136 /*
2137 * Release the original VLNK vnode
2138 */
2139
2140 VN_RELE(vp);
2209 *
2210 * Retrieve filesystem ACL. Depends on requested ACLs in
2211 * fs_sd->sd_secinfo, it'll set DACL and SACL pointers in
2212 * fs_sd. Note that requesting a DACL/SACL doesn't mean that
2213 * the corresponding field in fs_sd should be non-NULL upon
2214 * return, since the target ACL might not contain that type of
2215 * entries.
2216 *
2217 * Returned ACL is always in ACE_T (aka ZFS) format.
2218 * If successful the allocated memory for the ACL should be freed
2219 * using smb_fsacl_free() or smb_fssd_term()
2220 */
2221 int
2222 smb_fsop_aclread(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2223 smb_fssd_t *fs_sd)
2224 {
2225 int error = 0;
2226 int flags = 0;
2227 int access = 0;
2228 acl_t *acl;
2229
2230 ASSERT(cr);
2231
2232 /* Can't query security on named streams */
2233 if (SMB_IS_STREAM(snode) != NULL)
2234 return (EINVAL);
2235
2236 if (SMB_TREE_HAS_ACCESS(sr, ACE_READ_ACL) == 0)
2237 return (EACCES);
2238
2239 if (sr->fid_ofile) {
2240 if (fs_sd->sd_secinfo & SMB_DACL_SECINFO)
2241 access = READ_CONTROL;
2242
2243 if (fs_sd->sd_secinfo & SMB_SACL_SECINFO)
2244 access |= ACCESS_SYSTEM_SECURITY;
2245
2246 error = smb_ofile_access(sr->fid_ofile, cr, access);
2247 if (error != NT_STATUS_SUCCESS) {
2248 return (EACCES);
2249 }
2250 }
2251
2252
2253 if (smb_tree_has_feature(sr->tid_tree, SMB_TREE_ACEMASKONACCESS))
2254 flags = ATTR_NOACLCHECK;
2255
2256 error = smb_vop_acl_read(snode->vp, &acl, flags,
2257 sr->tid_tree->t_acltype, cr);
2258 if (error != 0) {
2259 return (error);
2260 }
2261
2262 error = acl_translate(acl, _ACL_ACE_ENABLED,
2263 smb_node_is_dir(snode), fs_sd->sd_uid, fs_sd->sd_gid);
2264
2265 if (error == 0) {
2266 smb_fsacl_split(acl, &fs_sd->sd_zdacl, &fs_sd->sd_zsacl,
2267 fs_sd->sd_secinfo);
2268 }
2269
2270 acl_free(acl);
2271 return (error);
2272 }
2273
2274 /*
2275 * smb_fsop_aclwrite
2276 *
2277 * Stores the filesystem ACL provided in fs_sd->sd_acl.
2278 */
2279 int
2280 smb_fsop_aclwrite(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2281 smb_fssd_t *fs_sd)
2282 {
2283 int target_flavor;
2284 int error = 0;
2285 int flags = 0;
2286 int access = 0;
2287 acl_t *acl, *dacl, *sacl;
2288
2289 ASSERT(cr);
2290
2291 ASSERT(sr);
2292 ASSERT(sr->tid_tree);
2293 if (SMB_TREE_IS_READONLY(sr))
2294 return (EROFS);
2295
2296 /* Can't set security on named streams */
2297 if (SMB_IS_STREAM(snode) != NULL)
2298 return (EINVAL);
2299
2300 if (SMB_TREE_HAS_ACCESS(sr, ACE_WRITE_ACL) == 0)
2301 return (EACCES);
2302
2303 if (sr->fid_ofile) {
2304 if (fs_sd->sd_secinfo & SMB_DACL_SECINFO)
2305 access = WRITE_DAC;
2306
2307 if (fs_sd->sd_secinfo & SMB_SACL_SECINFO)
2308 access |= ACCESS_SYSTEM_SECURITY;
2309
2310 error = smb_ofile_access(sr->fid_ofile, cr, access);
2311 if (error != NT_STATUS_SUCCESS)
2312 return (EACCES);
2313 }
2314
2315 switch (sr->tid_tree->t_acltype) {
2316 case ACLENT_T:
2317 target_flavor = _ACL_ACLENT_ENABLED;
2318 break;
2319
2320 case ACE_T:
2321 target_flavor = _ACL_ACE_ENABLED;
2322 break;
2323 default:
2324 return (EINVAL);
2325 }
2326
2327 dacl = fs_sd->sd_zdacl;
2328 sacl = fs_sd->sd_zsacl;
2329
2330 ASSERT(dacl || sacl);
2331 if ((dacl == NULL) && (sacl == NULL))
2332 return (EINVAL);
2333
2334 if (dacl && sacl)
2335 acl = smb_fsacl_merge(dacl, sacl);
2336 else if (dacl)
2337 acl = dacl;
2338 else
2339 acl = sacl;
2340
2341 error = acl_translate(acl, target_flavor, smb_node_is_dir(snode),
2342 fs_sd->sd_uid, fs_sd->sd_gid);
2343 if (error == 0) {
2344 if (smb_tree_has_feature(sr->tid_tree,
2345 SMB_TREE_ACEMASKONACCESS))
2346 flags = ATTR_NOACLCHECK;
2361 }
2362
2363 /*
2364 * smb_fsop_sdread
2365 *
2366 * Read the requested security descriptor items from filesystem.
2367 * The items are specified in fs_sd->sd_secinfo.
2368 */
2369 int
2370 smb_fsop_sdread(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2371 smb_fssd_t *fs_sd)
2372 {
2373 int error = 0;
2374 int getowner = 0;
2375 cred_t *ga_cred;
2376 smb_attr_t attr;
2377
2378 ASSERT(cr);
2379 ASSERT(fs_sd);
2380
2381 /* Can't query security on named streams */
2382 if (SMB_IS_STREAM(snode) != NULL)
2383 return (EINVAL);
2384
2385 /*
2386 * File's uid/gid is fetched in two cases:
2387 *
2388 * 1. it's explicitly requested
2389 *
2390 * 2. target ACL is ACE_T (ZFS ACL). They're needed for
2391 * owner@/group@ entries. In this case kcred should be used
2392 * because uid/gid are fetched on behalf of smb server.
2393 */
2394 if (fs_sd->sd_secinfo & (SMB_OWNER_SECINFO | SMB_GROUP_SECINFO)) {
2395 getowner = 1;
2396 ga_cred = cr;
2397 } else if (sr->tid_tree->t_acltype == ACE_T) {
2398 getowner = 1;
2399 ga_cred = zone_kcred();
2400 }
2401
2402 if (getowner) {
2403 /*
2404 * Windows require READ_CONTROL to read owner/group SID since
2530 * in upper layers, so EPERM is mapped to EBADE.
2531 */
2532 int
2533 smb_fsop_sdwrite(smb_request_t *sr, cred_t *cr, smb_node_t *snode,
2534 smb_fssd_t *fs_sd, int overwrite)
2535 {
2536 smb_attr_t set_attr;
2537 smb_attr_t orig_attr;
2538 cred_t *kcr = zone_kcred();
2539 int error = 0;
2540 int access = 0;
2541
2542 ASSERT(cr);
2543 ASSERT(fs_sd);
2544
2545 ASSERT(sr);
2546 ASSERT(sr->tid_tree);
2547 if (SMB_TREE_IS_READONLY(sr))
2548 return (EROFS);
2549
2550 /* Can't set security on named streams */
2551 if (SMB_IS_STREAM(snode) != NULL)
2552 return (EINVAL);
2553
2554 bzero(&set_attr, sizeof (smb_attr_t));
2555
2556 if (fs_sd->sd_secinfo & SMB_OWNER_SECINFO) {
2557 set_attr.sa_vattr.va_uid = fs_sd->sd_uid;
2558 set_attr.sa_mask |= SMB_AT_UID;
2559 access |= WRITE_OWNER;
2560 }
2561
2562 if (fs_sd->sd_secinfo & SMB_GROUP_SECINFO) {
2563 set_attr.sa_vattr.va_gid = fs_sd->sd_gid;
2564 set_attr.sa_mask |= SMB_AT_GID;
2565 access |= WRITE_OWNER;
2566 }
2567
2568 if (fs_sd->sd_secinfo & SMB_DACL_SECINFO)
2569 access |= WRITE_DAC;
2570
2571 if (fs_sd->sd_secinfo & SMB_SACL_SECINFO)
2572 access |= ACCESS_SYSTEM_SECURITY;
2573
2724 return;
2725 }
2726
2727 /*
2728 * FS doesn't understand 32-bit mask
2729 */
2730 smb_vop_eaccess(snode->vp, &access, 0, NULL, cr);
2731 access &= sr->tid_tree->t_access;
2732
2733 *eaccess = READ_CONTROL | FILE_READ_EA | FILE_READ_ATTRIBUTES;
2734
2735 if (access & VREAD)
2736 *eaccess |= FILE_READ_DATA;
2737
2738 if (access & VEXEC)
2739 *eaccess |= FILE_EXECUTE;
2740
2741 if (access & VWRITE)
2742 *eaccess |= FILE_WRITE_DATA | FILE_WRITE_ATTRIBUTES |
2743 FILE_WRITE_EA | FILE_APPEND_DATA | FILE_DELETE_CHILD;
2744
2745 if (access & (VREAD | VWRITE))
2746 *eaccess |= SYNCHRONIZE;
2747
2748 #ifdef _FAKE_KERNEL
2749 /* Should be: if (we are the owner)... */
2750 if (access & VWRITE)
2751 *eaccess |= DELETE | WRITE_DAC | WRITE_OWNER;
2752 #endif
2753 }
2754
2755 /*
2756 * smb_fsop_shrlock
2757 *
2758 * For the current open request, check file sharing rules
2759 * against existing opens.
2760 *
2761 * Returns NT_STATUS_SHARING_VIOLATION if there is any
2762 * sharing conflict. Returns NT_STATUS_SUCCESS otherwise.
2763 *
2764 * Full system-wide share reservation synchronization is available
2765 * when the nbmand (non-blocking mandatory) mount option is set
2766 * (i.e. nbl_need_crit() is true) and nbmand critical regions are used.
2767 * This provides synchronization with NFS and local processes. The
2768 * critical regions are entered in VOP_SHRLOCK()/fs_shrlock() (called
2769 * from smb_open_subr()/smb_fsop_shrlock()/smb_vop_shrlock()) as well
2770 * as the CIFS rename and delete paths.
2771 *
2772 * The CIFS server will also enter the nbl critical region in the open,
2813 {
2814 flock64_t bf;
2815 int flag = F_REMOTELOCK;
2816
2817 /*
2818 * VOP_FRLOCK() will not be called if:
2819 *
2820 * 1) The lock has a range of zero bytes. The semantics of Windows and
2821 * POSIX are different. In the case of POSIX it asks for the locking
2822 * of all the bytes from the offset provided until the end of the
2823 * file. In the case of Windows a range of zero locks nothing and
2824 * doesn't conflict with any other lock.
2825 *
2826 * 2) The lock rolls over (start + lenght < start). Solaris will assert
2827 * if such a request is submitted. This will not create
2828 * incompatibilities between POSIX and Windows. In the Windows world,
2829 * if a client submits such a lock, the server will not lock any
2830 * bytes. Interestingly if the same lock (same offset and length) is
2831 * resubmitted Windows will consider that there is an overlap and
2832 * the granting rules will then apply.
2833 *
2834 * 3) The SMB-level process IDs (smb_pid) are not passed down to the
2835 * POSIX level in l_pid because (a) the rules about lock PIDs are
2836 * different in SMB, and (b) we're putting our ofile f_uniqid in
2837 * the POSIX l_pid field to segregate locks per SMB ofile.
2838 * (We're also using a "remote" system ID in l_sysid.)
2839 * All SMB locking PIDs are handled at the SMB level and
2840 * not exposed in POSIX locking.
2841 */
2842 if ((lock->l_length == 0) ||
2843 ((lock->l_start + lock->l_length - 1) < lock->l_start))
2844 return (0);
2845
2846 bzero(&bf, sizeof (bf));
2847
2848 if (unlock) {
2849 bf.l_type = F_UNLCK;
2850 } else if (lock->l_type == SMB_LOCK_TYPE_READONLY) {
2851 bf.l_type = F_RDLCK;
2852 flag |= FREAD;
2853 } else if (lock->l_type == SMB_LOCK_TYPE_READWRITE) {
2854 bf.l_type = F_WRLCK;
2855 flag |= FWRITE;
2856 }
2857
2858 bf.l_start = lock->l_start;
2859 bf.l_len = lock->l_length;
2860 bf.l_pid = lock->l_file->f_uniqid;
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