2 Unix SMB/CIFS implementation.
4 POSIX NTVFS backend - ACL support
6 Copyright (C) Andrew Tridgell 2004
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>.
23 #include "auth/auth.h"
24 #include "vfs_posix.h"
25 #include "librpc/gen_ndr/xattr.h"
26 #include "libcli/security/security.h"
27 #include "param/param.h"
30 /* the list of currently registered ACL backends */
31 static struct pvfs_acl_backend {
32 const struct pvfs_acl_ops *ops;
34 static int num_backends;
37 register a pvfs acl backend.
39 The 'name' can be later used by other backends to find the operations
40 structure for this backend.
42 NTSTATUS pvfs_acl_register(const struct pvfs_acl_ops *ops)
44 struct pvfs_acl_ops *new_ops;
46 if (pvfs_acl_backend_byname(ops->name) != NULL) {
47 DEBUG(0,("pvfs acl backend '%s' already registered\n", ops->name));
48 return NT_STATUS_OBJECT_NAME_COLLISION;
51 backends = talloc_realloc(talloc_autofree_context(), backends, struct pvfs_acl_backend, num_backends+1);
52 NT_STATUS_HAVE_NO_MEMORY(backends);
54 new_ops = (struct pvfs_acl_ops *)talloc_memdup(backends, ops, sizeof(*ops));
55 new_ops->name = talloc_strdup(new_ops, ops->name);
57 backends[num_backends].ops = new_ops;
61 DEBUG(3,("NTVFS backend '%s' registered\n", ops->name));
68 return the operations structure for a named backend
70 const struct pvfs_acl_ops *pvfs_acl_backend_byname(const char *name)
74 for (i=0;i<num_backends;i++) {
75 if (strcmp(backends[i].ops->name, name) == 0) {
76 return backends[i].ops;
83 NTSTATUS pvfs_acl_init(struct loadparm_context *lp_ctx)
85 static bool initialized = false;
86 extern NTSTATUS pvfs_acl_nfs4_init(void);
87 extern NTSTATUS pvfs_acl_xattr_init(void);
88 init_module_fn static_init[] = { STATIC_pvfs_acl_MODULES };
89 init_module_fn *shared_init;
91 if (initialized) return NT_STATUS_OK;
94 shared_init = load_samba_modules(NULL, lp_ctx, "pvfs_acl");
96 run_init_functions(static_init);
97 run_init_functions(shared_init);
99 talloc_free(shared_init);
106 map a single access_mask from generic to specific bits for files/dirs
108 static uint32_t pvfs_translate_mask(uint32_t access_mask)
110 if (access_mask & SEC_MASK_GENERIC) {
111 if (access_mask & SEC_GENERIC_READ) access_mask |= SEC_RIGHTS_FILE_READ;
112 if (access_mask & SEC_GENERIC_WRITE) access_mask |= SEC_RIGHTS_FILE_WRITE;
113 if (access_mask & SEC_GENERIC_EXECUTE) access_mask |= SEC_RIGHTS_FILE_EXECUTE;
114 if (access_mask & SEC_GENERIC_ALL) access_mask |= SEC_RIGHTS_FILE_ALL;
115 access_mask &= ~SEC_MASK_GENERIC;
122 map any generic access bits in the given acl
123 this relies on the fact that the mappings for files and directories
126 static void pvfs_translate_generic_bits(struct security_acl *acl)
132 for (i=0;i<acl->num_aces;i++) {
133 struct security_ace *ace = &acl->aces[i];
134 ace->access_mask = pvfs_translate_mask(ace->access_mask);
140 setup a default ACL for a file
142 static NTSTATUS pvfs_default_acl(struct pvfs_state *pvfs,
143 struct ntvfs_request *req,
144 struct pvfs_filename *name, int fd,
145 struct security_descriptor **psd)
147 struct security_descriptor *sd;
149 struct security_ace ace;
151 struct id_mapping *ids;
152 struct composite_context *ctx;
154 *psd = security_descriptor_initialise(req);
156 return NT_STATUS_NO_MEMORY;
160 ids = talloc_zero_array(sd, struct id_mapping, 2);
161 NT_STATUS_HAVE_NO_MEMORY(ids);
163 ids[0].unixid = talloc(ids, struct unixid);
164 NT_STATUS_HAVE_NO_MEMORY(ids[0].unixid);
166 ids[0].unixid->id = name->st.st_uid;
167 ids[0].unixid->type = ID_TYPE_UID;
170 ids[1].unixid = talloc(ids, struct unixid);
171 NT_STATUS_HAVE_NO_MEMORY(ids[1].unixid);
173 ids[1].unixid->id = name->st.st_gid;
174 ids[1].unixid->type = ID_TYPE_GID;
177 ctx = wbc_xids_to_sids_send(pvfs->wbc_ctx, ids, 2, ids);
178 NT_STATUS_HAVE_NO_MEMORY(ctx);
180 status = wbc_xids_to_sids_recv(ctx, &ids);
181 NT_STATUS_NOT_OK_RETURN(status);
183 sd->owner_sid = talloc_steal(sd, ids[0].sid);
184 sd->group_sid = talloc_steal(sd, ids[1].sid);
187 sd->type |= SEC_DESC_DACL_PRESENT;
189 mode = name->st.st_mode;
192 we provide up to 4 ACEs
200 /* setup owner ACE */
201 ace.type = SEC_ACE_TYPE_ACCESS_ALLOWED;
203 ace.trustee = *sd->owner_sid;
206 if (mode & S_IRUSR) {
207 if (mode & S_IWUSR) {
208 ace.access_mask |= SEC_RIGHTS_FILE_ALL;
210 ace.access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
213 if (mode & S_IWUSR) {
214 ace.access_mask |= SEC_RIGHTS_FILE_WRITE | SEC_STD_DELETE;
216 if (ace.access_mask) {
217 security_descriptor_dacl_add(sd, &ace);
221 /* setup group ACE */
222 ace.trustee = *sd->group_sid;
224 if (mode & S_IRGRP) {
225 ace.access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
227 if (mode & S_IWGRP) {
228 /* note that delete is not granted - this matches posix behaviour */
229 ace.access_mask |= SEC_RIGHTS_FILE_WRITE;
231 if (ace.access_mask) {
232 security_descriptor_dacl_add(sd, &ace);
235 /* setup other ACE */
236 ace.trustee = *dom_sid_parse_talloc(req, SID_WORLD);
238 if (mode & S_IROTH) {
239 ace.access_mask |= SEC_RIGHTS_FILE_READ | SEC_FILE_EXECUTE;
241 if (mode & S_IWOTH) {
242 ace.access_mask |= SEC_RIGHTS_FILE_WRITE;
244 if (ace.access_mask) {
245 security_descriptor_dacl_add(sd, &ace);
248 /* setup system ACE */
249 ace.trustee = *dom_sid_parse_talloc(req, SID_NT_SYSTEM);
250 ace.access_mask = SEC_RIGHTS_FILE_ALL;
251 security_descriptor_dacl_add(sd, &ace);
258 omit any security_descriptor elements not specified in the given
261 static void normalise_sd_flags(struct security_descriptor *sd, uint32_t secinfo_flags)
263 if (!(secinfo_flags & SECINFO_OWNER)) {
264 sd->owner_sid = NULL;
266 if (!(secinfo_flags & SECINFO_GROUP)) {
267 sd->group_sid = NULL;
269 if (!(secinfo_flags & SECINFO_DACL)) {
272 if (!(secinfo_flags & SECINFO_SACL)) {
278 answer a setfileinfo for an ACL
280 NTSTATUS pvfs_acl_set(struct pvfs_state *pvfs,
281 struct ntvfs_request *req,
282 struct pvfs_filename *name, int fd,
283 uint32_t access_mask,
284 union smb_setfileinfo *info)
286 uint32_t secinfo_flags = info->set_secdesc.in.secinfo_flags;
287 struct security_descriptor *new_sd, *sd, orig_sd;
288 NTSTATUS status = NT_STATUS_NOT_FOUND;
293 struct id_mapping *ids;
294 struct composite_context *ctx;
296 if (pvfs->acl_ops != NULL) {
297 status = pvfs->acl_ops->acl_load(pvfs, name, fd, req, &sd);
299 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
300 status = pvfs_default_acl(pvfs, req, name, fd, &sd);
302 if (!NT_STATUS_IS_OK(status)) {
306 ids = talloc(req, struct id_mapping);
307 NT_STATUS_HAVE_NO_MEMORY(ids);
310 ids->status = NT_STATUS_NONE_MAPPED;
312 new_sd = info->set_secdesc.in.sd;
315 old_uid = name->st.st_uid;
316 old_gid = name->st.st_gid;
318 /* only set the elements that have been specified */
319 if (secinfo_flags & SECINFO_OWNER) {
320 if (!(access_mask & SEC_STD_WRITE_OWNER)) {
321 return NT_STATUS_ACCESS_DENIED;
323 if (!dom_sid_equal(sd->owner_sid, new_sd->owner_sid)) {
324 ids->sid = new_sd->owner_sid;
325 ctx = wbc_sids_to_xids_send(pvfs->wbc_ctx, ids, 1, ids);
326 NT_STATUS_HAVE_NO_MEMORY(ctx);
327 status = wbc_sids_to_xids_recv(ctx, &ids);
328 NT_STATUS_NOT_OK_RETURN(status);
330 if (ids->unixid->type == ID_TYPE_BOTH ||
331 ids->unixid->type == ID_TYPE_UID) {
332 new_uid = ids->unixid->id;
335 sd->owner_sid = new_sd->owner_sid;
337 if (secinfo_flags & SECINFO_GROUP) {
338 if (!(access_mask & SEC_STD_WRITE_OWNER)) {
339 return NT_STATUS_ACCESS_DENIED;
341 if (!dom_sid_equal(sd->group_sid, new_sd->group_sid)) {
342 ids->sid = new_sd->group_sid;
343 ctx = wbc_sids_to_xids_send(pvfs->wbc_ctx, ids, 1, ids);
344 NT_STATUS_HAVE_NO_MEMORY(ctx);
345 status = wbc_sids_to_xids_recv(ctx, &ids);
346 NT_STATUS_NOT_OK_RETURN(status);
348 if (ids->unixid->type == ID_TYPE_BOTH ||
349 ids->unixid->type == ID_TYPE_GID) {
350 new_gid = ids->unixid->id;
354 sd->group_sid = new_sd->group_sid;
356 if (secinfo_flags & SECINFO_DACL) {
357 if (!(access_mask & SEC_STD_WRITE_DAC)) {
358 return NT_STATUS_ACCESS_DENIED;
360 sd->dacl = new_sd->dacl;
361 pvfs_translate_generic_bits(sd->dacl);
363 if (secinfo_flags & SECINFO_SACL) {
364 if (!(access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
365 return NT_STATUS_ACCESS_DENIED;
367 sd->sacl = new_sd->sacl;
368 pvfs_translate_generic_bits(sd->sacl);
371 if (new_uid == old_uid) {
375 if (new_gid == old_gid) {
379 /* if there's something to change try it */
380 if (new_uid != -1 || new_gid != -1) {
383 ret = chown(name->full_name, new_uid, new_gid);
385 ret = fchown(fd, new_uid, new_gid);
388 return pvfs_map_errno(pvfs, errno);
392 /* we avoid saving if the sd is the same. This means when clients
393 copy files and end up copying the default sd that we don't
394 needlessly use xattrs */
395 if (!security_descriptor_equal(sd, &orig_sd) && pvfs->acl_ops) {
396 status = pvfs->acl_ops->acl_save(pvfs, name, fd, sd);
404 answer a fileinfo query for the ACL
406 NTSTATUS pvfs_acl_query(struct pvfs_state *pvfs,
407 struct ntvfs_request *req,
408 struct pvfs_filename *name, int fd,
409 union smb_fileinfo *info)
411 NTSTATUS status = NT_STATUS_NOT_FOUND;
412 struct security_descriptor *sd;
415 status = pvfs->acl_ops->acl_load(pvfs, name, fd, req, &sd);
417 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
418 status = pvfs_default_acl(pvfs, req, name, fd, &sd);
420 if (!NT_STATUS_IS_OK(status)) {
424 normalise_sd_flags(sd, info->query_secdesc.in.secinfo_flags);
426 info->query_secdesc.out.sd = sd;
433 check the read only bit against any of the write access bits
435 static bool pvfs_read_only(struct pvfs_state *pvfs, uint32_t access_mask)
437 if ((pvfs->flags & PVFS_FLAG_READONLY) &&
438 (access_mask & (SEC_FILE_WRITE_DATA |
439 SEC_FILE_APPEND_DATA |
441 SEC_FILE_WRITE_ATTRIBUTE |
444 SEC_STD_WRITE_OWNER |
445 SEC_DIR_DELETE_CHILD))) {
452 default access check function based on unix permissions
453 doing this saves on building a full security descriptor
454 for the common case of access check on files with no
457 NTSTATUS pvfs_access_check_unix(struct pvfs_state *pvfs,
458 struct ntvfs_request *req,
459 struct pvfs_filename *name,
460 uint32_t *access_mask)
462 uid_t uid = geteuid();
463 uint32_t max_bits = SEC_RIGHTS_FILE_READ | SEC_FILE_ALL;
465 if (pvfs_read_only(pvfs, *access_mask)) {
466 return NT_STATUS_ACCESS_DENIED;
469 /* owner and root get extra permissions */
471 max_bits |= SEC_STD_ALL | SEC_FLAG_SYSTEM_SECURITY;
472 } else if (uid == name->st.st_uid) {
473 max_bits |= SEC_STD_ALL;
476 #ifdef UID_WRAPPER_REPLACE
477 /* when running with the uid wrapper, files will be created
478 owned by the ruid, but we may have a different simulated
479 euid. We need to force the permission bits as though the
480 files owner matches the euid */
481 max_bits |= SEC_STD_ALL;
484 if (*access_mask == SEC_FLAG_MAXIMUM_ALLOWED) {
485 *access_mask = max_bits;
489 if (uid != 0 && (*access_mask & SEC_FLAG_SYSTEM_SECURITY)) {
490 return NT_STATUS_ACCESS_DENIED;
493 if (*access_mask & ~max_bits) {
494 return NT_STATUS_ACCESS_DENIED;
497 if (pvfs->ntvfs->ctx->protocol != PROTOCOL_SMB2) {
498 /* on SMB, this bit is always granted, even if not
500 *access_mask |= SEC_FILE_READ_ATTRIBUTE;
508 check the security descriptor on a file, if any
510 *access_mask is modified with the access actually granted
512 NTSTATUS pvfs_access_check(struct pvfs_state *pvfs,
513 struct ntvfs_request *req,
514 struct pvfs_filename *name,
515 uint32_t *access_mask)
517 struct security_token *token = req->session_info->security_token;
518 struct xattr_NTACL *acl;
520 struct security_descriptor *sd;
522 /* on SMB2 a blank access mask is always denied */
523 if (pvfs->ntvfs->ctx->protocol == PROTOCOL_SMB2 &&
525 return NT_STATUS_ACCESS_DENIED;
528 if (pvfs_read_only(pvfs, *access_mask)) {
529 return NT_STATUS_ACCESS_DENIED;
532 acl = talloc(req, struct xattr_NTACL);
534 return NT_STATUS_NO_MEMORY;
537 /* expand the generic access bits to file specific bits */
538 *access_mask = pvfs_translate_mask(*access_mask);
539 if (pvfs->ntvfs->ctx->protocol != PROTOCOL_SMB2) {
540 *access_mask &= ~SEC_FILE_READ_ATTRIBUTE;
543 status = pvfs_acl_load(pvfs, name, -1, acl);
544 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
546 return pvfs_access_check_unix(pvfs, req, name, access_mask);
548 if (!NT_STATUS_IS_OK(status)) {
552 switch (acl->version) {
557 return NT_STATUS_INVALID_ACL;
560 /* check the acl against the required access mask */
561 status = sec_access_check(sd, token, *access_mask, access_mask);
563 if (pvfs->ntvfs->ctx->protocol != PROTOCOL_SMB2) {
564 /* on SMB, this bit is always granted, even if not
566 *access_mask |= SEC_FILE_READ_ATTRIBUTE;
576 a simplified interface to access check, designed for calls that
577 do not take or return an access check mask
579 NTSTATUS pvfs_access_check_simple(struct pvfs_state *pvfs,
580 struct ntvfs_request *req,
581 struct pvfs_filename *name,
582 uint32_t access_needed)
584 if (access_needed == 0) {
587 return pvfs_access_check(pvfs, req, name, &access_needed);
591 access check for creating a new file/directory
593 NTSTATUS pvfs_access_check_create(struct pvfs_state *pvfs,
594 struct ntvfs_request *req,
595 struct pvfs_filename *name,
596 uint32_t *access_mask)
598 struct pvfs_filename *parent;
601 status = pvfs_resolve_parent(pvfs, req, name, &parent);
602 if (!NT_STATUS_IS_OK(status)) {
606 status = pvfs_access_check(pvfs, req, parent, access_mask);
607 if (!NT_STATUS_IS_OK(status)) {
611 if (! ((*access_mask) & SEC_DIR_ADD_FILE)) {
612 return pvfs_access_check_simple(pvfs, req, parent, SEC_DIR_ADD_FILE);
619 access check for creating a new file/directory - no access mask supplied
621 NTSTATUS pvfs_access_check_parent(struct pvfs_state *pvfs,
622 struct ntvfs_request *req,
623 struct pvfs_filename *name,
624 uint32_t access_mask)
626 struct pvfs_filename *parent;
629 status = pvfs_resolve_parent(pvfs, req, name, &parent);
630 if (!NT_STATUS_IS_OK(status)) {
634 return pvfs_access_check_simple(pvfs, req, parent, access_mask);
639 determine if an ACE is inheritable
641 static bool pvfs_inheritable_ace(struct pvfs_state *pvfs,
642 const struct security_ace *ace,
646 return (ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT) != 0;
649 if (ace->flags & SEC_ACE_FLAG_CONTAINER_INHERIT) {
653 if ((ace->flags & SEC_ACE_FLAG_OBJECT_INHERIT) &&
654 !(ace->flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT)) {
662 this is the core of ACL inheritance. It copies any inheritable
663 aces from the parent SD to the child SD. Note that the algorithm
664 depends on whether the child is a container or not
666 static NTSTATUS pvfs_acl_inherit_aces(struct pvfs_state *pvfs,
667 struct security_descriptor *parent_sd,
668 struct security_descriptor *sd,
673 for (i=0;i<parent_sd->dacl->num_aces;i++) {
674 struct security_ace ace = parent_sd->dacl->aces[i];
676 const struct dom_sid *creator = NULL, *new_id = NULL;
679 if (!pvfs_inheritable_ace(pvfs, &ace, container)) {
683 orig_flags = ace.flags;
685 /* see the RAW-ACLS inheritance test for details on these rules */
689 ace.flags &= ~SEC_ACE_FLAG_INHERIT_ONLY;
691 if (!(ace.flags & SEC_ACE_FLAG_CONTAINER_INHERIT)) {
692 ace.flags |= SEC_ACE_FLAG_INHERIT_ONLY;
694 if (ace.flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT) {
699 /* the CREATOR sids are special when inherited */
700 if (dom_sid_equal(&ace.trustee, pvfs->sid_cache.creator_owner)) {
701 creator = pvfs->sid_cache.creator_owner;
702 new_id = sd->owner_sid;
703 } else if (dom_sid_equal(&ace.trustee, pvfs->sid_cache.creator_group)) {
704 creator = pvfs->sid_cache.creator_group;
705 new_id = sd->group_sid;
707 new_id = &ace.trustee;
710 if (creator && container &&
711 (ace.flags & SEC_ACE_FLAG_CONTAINER_INHERIT)) {
712 uint32_t flags = ace.flags;
714 ace.trustee = *new_id;
716 status = security_descriptor_dacl_add(sd, &ace);
717 if (!NT_STATUS_IS_OK(status)) {
721 ace.trustee = *creator;
722 ace.flags = flags | SEC_ACE_FLAG_INHERIT_ONLY;
723 status = security_descriptor_dacl_add(sd, &ace);
724 } else if (container &&
725 !(orig_flags & SEC_ACE_FLAG_NO_PROPAGATE_INHERIT)) {
726 status = security_descriptor_dacl_add(sd, &ace);
728 ace.trustee = *new_id;
729 status = security_descriptor_dacl_add(sd, &ace);
732 if (!NT_STATUS_IS_OK(status)) {
743 setup an ACL on a new file/directory based on the inherited ACL from
744 the parent. If there is no inherited ACL then we don't set anything,
745 as the default ACL applies anyway
747 NTSTATUS pvfs_acl_inherit(struct pvfs_state *pvfs,
748 struct ntvfs_request *req,
749 struct pvfs_filename *name,
752 struct xattr_NTACL *acl;
754 struct pvfs_filename *parent;
755 struct security_descriptor *parent_sd, *sd;
757 struct id_mapping *ids;
758 struct composite_context *ctx;
760 /* form the parents path */
761 status = pvfs_resolve_parent(pvfs, req, name, &parent);
762 if (!NT_STATUS_IS_OK(status)) {
766 acl = talloc(req, struct xattr_NTACL);
768 return NT_STATUS_NO_MEMORY;
771 status = pvfs_acl_load(pvfs, parent, -1, acl);
772 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
775 if (!NT_STATUS_IS_OK(status)) {
779 switch (acl->version) {
781 parent_sd = acl->info.sd;
784 return NT_STATUS_INVALID_ACL;
787 if (parent_sd == NULL ||
788 parent_sd->dacl == NULL ||
789 parent_sd->dacl->num_aces == 0) {
790 /* go with the default ACL */
794 /* create the new sd */
795 sd = security_descriptor_initialise(req);
797 return NT_STATUS_NO_MEMORY;
800 ids = talloc_array(sd, struct id_mapping, 2);
801 NT_STATUS_HAVE_NO_MEMORY(ids);
803 ids[0].unixid = talloc(ids, struct unixid);
804 NT_STATUS_HAVE_NO_MEMORY(ids[0].unixid);
805 ids[0].unixid->id = name->st.st_uid;
806 ids[0].unixid->type = ID_TYPE_UID;
808 ids[0].status = NT_STATUS_NONE_MAPPED;
810 ids[1].unixid = talloc(ids, struct unixid);
811 NT_STATUS_HAVE_NO_MEMORY(ids[1].unixid);
812 ids[1].unixid->id = name->st.st_gid;
813 ids[1].unixid->type = ID_TYPE_GID;
815 ids[1].status = NT_STATUS_NONE_MAPPED;
817 ctx = wbc_xids_to_sids_send(pvfs->wbc_ctx, ids, 2, ids);
818 NT_STATUS_HAVE_NO_MEMORY(ctx);
820 status = wbc_xids_to_sids_recv(ctx, &ids);
821 NT_STATUS_NOT_OK_RETURN(status);
823 sd->owner_sid = talloc_steal(sd, ids[0].sid);
824 sd->group_sid = talloc_steal(sd, ids[1].sid);
826 sd->type |= SEC_DESC_DACL_PRESENT;
828 container = (name->dos.attrib & FILE_ATTRIBUTE_DIRECTORY) ? true:false;
830 /* fill in the aces from the parent */
831 status = pvfs_acl_inherit_aces(pvfs, parent_sd, sd, container);
832 if (!NT_STATUS_IS_OK(status)) {
836 /* if there is nothing to inherit then we fallback to the
838 if (sd->dacl == NULL || sd->dacl->num_aces == 0) {
844 status = pvfs_acl_save(pvfs, name, fd, acl);
850 return the maximum allowed access mask
852 NTSTATUS pvfs_access_maximal_allowed(struct pvfs_state *pvfs,
853 struct ntvfs_request *req,
854 struct pvfs_filename *name,
855 uint32_t *maximal_access)
857 *maximal_access = SEC_FLAG_MAXIMUM_ALLOWED;
858 return pvfs_access_check(pvfs, req, name, maximal_access);