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smbd: Factor out get_share_mode_write_time of get_file_infos
[Samba.git] / source3 / modules / vfs_nfs4acl_xattr.c
blobbdaca82b8ca52b4a5bdf45f17412aa4d2ea2bc7d
1 /*
2 * Convert NFSv4 acls stored per http://www.suse.de/~agruen/nfs4acl/ to NT acls and vice versa.
3 *
4 * Copyright (C) Jiri Sasek, 2007
5 * based on the foobar.c module which is copyrighted by Volker Lendecke
6 * based on pvfs_acl_nfs4.c Copyright (C) Andrew Tridgell 2006
7 *
8 * based on vfs_fake_acls:
9 * Copyright (C) Tim Potter, 1999-2000
10 * Copyright (C) Alexander Bokovoy, 2002
11 * Copyright (C) Andrew Bartlett, 2002,2012
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License as published by
15 * the Free Software Foundation; either version 3 of the License, or
16 * (at your option) any later version.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 *
23 * You should have received a copy of the GNU General Public License
24 * along with this program; if not, see <http://www.gnu.org/licenses/>.
25 *
26 */
27
28 #include "includes.h"
29 #include "system/filesys.h"
30 #include "smbd/smbd.h"
31 #include "nfs4_acls.h"
32 #include "librpc/gen_ndr/ndr_nfs4acl.h"
33
34 #undef DBGC_CLASS
35 #define DBGC_CLASS DBGC_VFS
36
37 static struct nfs4acl *nfs4acl_blob2acl(DATA_BLOB *blob, TALLOC_CTX *mem_ctx)
38 {
39 enum ndr_err_code ndr_err;
40 struct nfs4acl *acl = talloc(mem_ctx, struct nfs4acl);
41 if (!acl) {
42 errno = ENOMEM;
43 return NULL;
44 }
45
46 ndr_err = ndr_pull_struct_blob(blob, acl, acl,
47 (ndr_pull_flags_fn_t)ndr_pull_nfs4acl);
48
49 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
50 DEBUG(0, ("ndr_pull_acl_t failed: %s\n",
51 ndr_errstr(ndr_err)));
52 TALLOC_FREE(acl);
53 return NULL;
54 }
55 return acl;
56 }
57
58 static DATA_BLOB nfs4acl_acl2blob(TALLOC_CTX *mem_ctx, struct nfs4acl *acl)
59 {
60 enum ndr_err_code ndr_err;
61 DATA_BLOB blob;
62 ndr_err = ndr_push_struct_blob(&blob, mem_ctx, acl,
63 (ndr_push_flags_fn_t)ndr_push_nfs4acl);
64
65 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
66 DEBUG(0, ("ndr_push_acl_t failed: %s\n",
67 ndr_errstr(ndr_err)));
68 return data_blob_null;
69 }
70 return blob;
71 }
72
73 static NTSTATUS nfs4_get_nfs4_acl_common(TALLOC_CTX *mem_ctx,
74 DATA_BLOB *blob,
75 SMB4ACL_T **ppacl)
76 {
77 int i;
78 struct nfs4acl *nfs4acl = NULL;
79 SMB4ACL_T *pacl = NULL;
80 TALLOC_CTX *frame = talloc_stackframe();
81 nfs4acl = nfs4acl_blob2acl(blob, frame);
82
83 /* create SMB4ACL data */
84 if((pacl = smb_create_smb4acl(mem_ctx)) == NULL) {
85 TALLOC_FREE(frame);
86 return NT_STATUS_NO_MEMORY;
87 }
88 for(i=0; i<nfs4acl->a_count; i++) {
89 SMB_ACE4PROP_T aceprop;
90
91 aceprop.aceType = (uint32) nfs4acl->ace[i].e_type;
92 aceprop.aceFlags = (uint32) nfs4acl->ace[i].e_flags;
93 aceprop.aceMask = (uint32) nfs4acl->ace[i].e_mask;
94 aceprop.who.id = (uint32) nfs4acl->ace[i].e_id;
95 if (!strcmp(nfs4acl->ace[i].e_who,
96 NFS4ACL_XATTR_OWNER_WHO)) {
97 aceprop.flags = SMB_ACE4_ID_SPECIAL;
98 aceprop.who.special_id = SMB_ACE4_WHO_OWNER;
99 } else if (!strcmp(nfs4acl->ace[i].e_who,
100 NFS4ACL_XATTR_GROUP_WHO)) {
101 aceprop.flags = SMB_ACE4_ID_SPECIAL;
102 aceprop.who.special_id = SMB_ACE4_WHO_GROUP;
103 } else if (!strcmp(nfs4acl->ace[i].e_who,
104 NFS4ACL_XATTR_EVERYONE_WHO)) {
105 aceprop.flags = SMB_ACE4_ID_SPECIAL;
106 aceprop.who.special_id = SMB_ACE4_WHO_EVERYONE;
107 } else {
108 aceprop.flags = 0;
109 }
110 if(smb_add_ace4(pacl, &aceprop) == NULL) {
111 TALLOC_FREE(frame);
112 return NT_STATUS_NO_MEMORY;
113 }
114 }
115
116 *ppacl = pacl;
117 TALLOC_FREE(frame);
118 return NT_STATUS_OK;
119 }
120
121 /* Fetch the NFSv4 ACL from the xattr, and convert into Samba's internal NFSv4 format */
122 static NTSTATUS nfs4_fget_nfs4_acl(vfs_handle_struct *handle, TALLOC_CTX *mem_ctx,
123 files_struct *fsp, SMB4ACL_T **ppacl)
124 {
125 NTSTATUS status;
126 DATA_BLOB blob = data_blob_null;
127 ssize_t length;
128 TALLOC_CTX *frame = talloc_stackframe();
129
130 do {
131 blob.length += 1000;
132 blob.data = talloc_realloc(frame, blob.data, uint8_t, blob.length);
133 if (!blob.data) {
134 TALLOC_FREE(frame);
135 errno = ENOMEM;
136 return NT_STATUS_NO_MEMORY;
137 }
138 length = SMB_VFS_NEXT_FGETXATTR(handle, fsp, NFS4ACL_XATTR_NAME, blob.data, blob.length);
139 blob.length = length;
140 } while (length == -1 && errno == ERANGE);
141 if (length == -1) {
142 TALLOC_FREE(frame);
143 return map_nt_error_from_unix(errno);
144 }
145 status = nfs4_get_nfs4_acl_common(mem_ctx, &blob, ppacl);
146 TALLOC_FREE(frame);
147 return status;
148 }
149
150 /* Fetch the NFSv4 ACL from the xattr, and convert into Samba's internal NFSv4 format */
151 static NTSTATUS nfs4_get_nfs4_acl(vfs_handle_struct *handle, TALLOC_CTX *mem_ctx,
152 const char *path, SMB4ACL_T **ppacl)
153 {
154 NTSTATUS status;
155 DATA_BLOB blob = data_blob_null;
156 ssize_t length;
157 TALLOC_CTX *frame = talloc_stackframe();
158
159 do {
160 blob.length += 1000;
161 blob.data = talloc_realloc(frame, blob.data, uint8_t, blob.length);
162 if (!blob.data) {
163 TALLOC_FREE(frame);
164 errno = ENOMEM;
165 return NT_STATUS_NO_MEMORY;
166 }
167 length = SMB_VFS_NEXT_GETXATTR(handle, path, NFS4ACL_XATTR_NAME, blob.data, blob.length);
168 blob.length = length;
169 } while (length == -1 && errno == ERANGE);
170 if (length == -1) {
171 TALLOC_FREE(frame);
172 return map_nt_error_from_unix(errno);
173 }
174 status = nfs4_get_nfs4_acl_common(mem_ctx, &blob, ppacl);
175 TALLOC_FREE(frame);
176 return status;
177 }
178
179 static bool nfs4acl_smb4acl2nfs4acl(TALLOC_CTX *mem_ctx,
180 SMB4ACL_T *smbacl,
181 struct nfs4acl **pnfs4acl,
182 bool denymissingspecial)
183 {
184 struct nfs4acl *nfs4acl;
185 SMB4ACE_T *smbace;
186 bool have_special_id = false;
187 int i;
188
189 /* allocate the field of NFS4 aces */
190 nfs4acl = talloc_zero(mem_ctx, struct nfs4acl);
191 if(nfs4acl == NULL) {
192 errno = ENOMEM;
193 return false;
194 }
195
196 nfs4acl->a_count = smb_get_naces(smbacl);
197
198 nfs4acl->ace = talloc_zero_array(nfs4acl, struct nfs4ace,
199 nfs4acl->a_count);
200 if(nfs4acl->ace == NULL) {
201 TALLOC_FREE(nfs4acl);
202 errno = ENOMEM;
203 return false;
204 }
205
206 /* handle all aces */
207 for(smbace = smb_first_ace4(smbacl), i = 0;
208 smbace!=NULL;
209 smbace = smb_next_ace4(smbace), i++) {
210 SMB_ACE4PROP_T *aceprop = smb_get_ace4(smbace);
211
212 nfs4acl->ace[i].e_type = aceprop->aceType;
213 nfs4acl->ace[i].e_flags = aceprop->aceFlags;
214 nfs4acl->ace[i].e_mask = aceprop->aceMask;
215 nfs4acl->ace[i].e_id = aceprop->who.id;
216 if(aceprop->flags & SMB_ACE4_ID_SPECIAL) {
217 switch(aceprop->who.special_id) {
218 case SMB_ACE4_WHO_EVERYONE:
219 nfs4acl->ace[i].e_who =
220 NFS4ACL_XATTR_EVERYONE_WHO;
221 break;
222 case SMB_ACE4_WHO_OWNER:
223 nfs4acl->ace[i].e_who =
224 NFS4ACL_XATTR_OWNER_WHO;
225 break;
226 case SMB_ACE4_WHO_GROUP:
227 nfs4acl->ace[i].e_who =
228 NFS4ACL_XATTR_GROUP_WHO;
229 break;
230 default:
231 DEBUG(8, ("unsupported special_id %d\n", \
232 aceprop->who.special_id));
233 continue; /* don't add it !!! */
234 }
235 have_special_id = true;
236 } else {
237 nfs4acl->ace[i].e_who = "";
238 }
239 }
240
241 if (!have_special_id && denymissingspecial) {
242 TALLOC_FREE(nfs4acl);
243 errno = EACCES;
244 return false;
245 }
246
247 SMB_ASSERT(i == nfs4acl->a_count);
248
249 *pnfs4acl = nfs4acl;
250 return true;
251 }
252
253 static bool nfs4acl_xattr_set_smb4acl(vfs_handle_struct *handle,
254 const char *path,
255 SMB4ACL_T *smbacl)
256 {
257 TALLOC_CTX *frame = talloc_stackframe();
258 struct nfs4acl *nfs4acl;
259 int ret;
260 bool denymissingspecial;
261 DATA_BLOB blob;
262
263 denymissingspecial = lp_parm_bool(handle->conn->params->service,
264 "nfs4acl_xattr",
265 "denymissingspecial", false);
266
267 if (!nfs4acl_smb4acl2nfs4acl(frame, smbacl, &nfs4acl,
268 denymissingspecial)) {
269 DEBUG(0, ("Failed to convert smb ACL to nfs4 ACL.\n"));
270 TALLOC_FREE(frame);
271 return false;
272 }
273
274 blob = nfs4acl_acl2blob(frame, nfs4acl);
275 if (!blob.data) {
276 DEBUG(0, ("Failed to convert ACL to linear blob for xattr\n"));
277 TALLOC_FREE(frame);
278 errno = EINVAL;
279 return false;
280 }
281 ret = SMB_VFS_NEXT_SETXATTR(handle, path, NFS4ACL_XATTR_NAME,
282 blob.data, blob.length, 0);
283 if (ret != 0) {
284 DEBUG(0, ("can't store acl in xattr: %s\n", strerror(errno)));
285 }
286 TALLOC_FREE(frame);
287 return ret == 0;
288 }
289
290 /* call-back function processing the NT acl -> NFS4 acl using NFSv4 conv. */
291 static bool nfs4acl_xattr_fset_smb4acl(vfs_handle_struct *handle,
292 files_struct *fsp,
293 SMB4ACL_T *smbacl)
294 {
295 TALLOC_CTX *frame = talloc_stackframe();
296 struct nfs4acl *nfs4acl;
297 int ret;
298 bool denymissingspecial;
299 DATA_BLOB blob;
300
301 denymissingspecial = lp_parm_bool(fsp->conn->params->service,
302 "nfs4acl_xattr",
303 "denymissingspecial", false);
304
305 if (!nfs4acl_smb4acl2nfs4acl(frame, smbacl, &nfs4acl,
306 denymissingspecial)) {
307 DEBUG(0, ("Failed to convert smb ACL to nfs4 ACL.\n"));
308 TALLOC_FREE(frame);
309 return false;
310 }
311
312 blob = nfs4acl_acl2blob(frame, nfs4acl);
313 if (!blob.data) {
314 DEBUG(0, ("Failed to convert ACL to linear blob for xattr\n"));
315 TALLOC_FREE(frame);
316 errno = EINVAL;
317 return false;
318 }
319 if (fsp->fh->fd == -1) {
320 DEBUG(0, ("Error: fsp->fh->fd == -1\n"));
321 }
322 ret = SMB_VFS_NEXT_FSETXATTR(handle, fsp, NFS4ACL_XATTR_NAME,
323 blob.data, blob.length, 0);
324 if (ret != 0) {
325 DEBUG(0, ("can't store acl in xattr: %s\n", strerror(errno)));
326 }
327 TALLOC_FREE(frame);
328 return ret == 0;
329 }
330
331 /* nfs4_set_nt_acl()
332 * set the local file's acls obtaining it in NT form
333 * using the NFSv4 format conversion
334 */
335 static NTSTATUS nfs4_set_nt_acl(vfs_handle_struct *handle, files_struct *fsp,
336 uint32 security_info_sent,
337 const struct security_descriptor *psd)
338 {
339 return smb_set_nt_acl_nfs4(handle, fsp, security_info_sent, psd,
340 nfs4acl_xattr_fset_smb4acl);
341 }
342
343 static SMB4ACL_T *nfs4acls_defaultacl(TALLOC_CTX *mem_ctx)
344 {
345 SMB4ACL_T *pacl = NULL;
346 SMB4ACE_T *pace;
347 SMB_ACE4PROP_T ace = { SMB_ACE4_ID_SPECIAL,
348 SMB_ACE4_WHO_EVERYONE,
349 SMB_ACE4_ACCESS_ALLOWED_ACE_TYPE,
350 0,
351 SMB_ACE4_ALL_MASKS };
352
353 DEBUG(10, ("Building default full access acl\n"));
354
355 pacl = smb_create_smb4acl(mem_ctx);
356 if (pacl == NULL) {
357 DEBUG(0, ("talloc failed\n"));
358 errno = ENOMEM;
359 return NULL;
360 }
361
362 pace = smb_add_ace4(pacl, &ace);
363 if (pace == NULL) {
364 DEBUG(0, ("talloc failed\n"));
365 TALLOC_FREE(pacl);
366 errno = ENOMEM;
367 return NULL;
368 }
369
370 return pacl;
371 }
372
373 /*
374 * Because there is no good way to guarantee that a new xattr will be
375 * created on file creation there might be no acl xattr on a file when
376 * trying to read the acl. In this case the acl xattr will get
377 * constructed at that time from the parent acl.
378 * If the parent ACL doesn't have an xattr either the call will
379 * recurse to the next parent directory until the share root is
380 * reached. If the share root doesn't contain an ACL xattr either a
381 * default ACL will be used.
382 * Also a default ACL will be set if a non inheriting ACL is encountered.
383 *
384 * Basic algorithm:
385 * read acl xattr blob
386 * if acl xattr blob doesn't exist
387 * stat current directory to know if it's a file or directory
388 * read acl xattr blob from parent dir
389 * acl xattr blob to smb nfs4 acl
390 * calculate inherited smb nfs4 acl
391 * without inheritance use default smb nfs4 acl
392 * smb nfs4 acl to acl xattr blob
393 * set acl xattr blob
394 * return smb nfs4 acl
395 * else
396 * acl xattr blob to smb nfs4 acl
397 *
398 * Todo: Really use mem_ctx after fixing interface of nfs4_acls
399 */
400 static SMB4ACL_T *nfs4acls_inheritacl(vfs_handle_struct *handle,
401 const char *path,
402 TALLOC_CTX *mem_ctx)
403 {
404 char *parent_dir = NULL;
405 SMB4ACL_T *pparentacl = NULL;
406 SMB4ACL_T *pchildacl = NULL;
407 SMB4ACE_T *pace;
408 SMB_ACE4PROP_T ace;
409 bool isdir;
410 struct smb_filename *smb_fname = NULL;
411 NTSTATUS status;
412 int ret;
413 TALLOC_CTX *frame = talloc_stackframe();
414
415 DEBUG(10, ("nfs4acls_inheritacl invoked for %s\n", path));
416 smb_fname = synthetic_smb_fname(frame, path, NULL, NULL);
417 if (smb_fname == NULL) {
418 TALLOC_FREE(frame);
419 errno = ENOMEM;
420 return NULL;
421 }
422
423 ret = SMB_VFS_STAT(handle->conn, smb_fname);
424 if (ret == -1) {
425 DEBUG(0,("nfs4acls_inheritacl: failed to stat "
426 "directory %s. Error was %s\n",
427 smb_fname_str_dbg(smb_fname),
428 strerror(errno)));
429 TALLOC_FREE(frame);
430 return NULL;
431 }
432 isdir = S_ISDIR(smb_fname->st.st_ex_mode);
433
434 if (!parent_dirname(talloc_tos(),
435 path,
436 &parent_dir,
437 NULL)) {
438 TALLOC_FREE(frame);
439 errno = ENOMEM;
440 return NULL;
441 }
442
443 status = nfs4_get_nfs4_acl(handle, frame, parent_dir, &pparentacl);
444 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)
445 && strncmp(parent_dir, ".", 2) != 0) {
446 pparentacl = nfs4acls_inheritacl(handle, parent_dir,
447 frame);
448 }
449 else if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
450 pparentacl = nfs4acls_defaultacl(frame);
451
452 }
453 else if (!NT_STATUS_IS_OK(status)) {
454 TALLOC_FREE(frame);
455 return NULL;
456 }
457
458 pchildacl = smb_create_smb4acl(mem_ctx);
459 if (pchildacl == NULL) {
460 DEBUG(0, ("talloc failed\n"));
461 TALLOC_FREE(frame);
462 errno = ENOMEM;
463 return NULL;
464 }
465
466 for (pace = smb_first_ace4(pparentacl); pace != NULL;
467 pace = smb_next_ace4(pace)) {
468 SMB4ACE_T *pchildace;
469 ace = *smb_get_ace4(pace);
470 if (isdir && !(ace.aceFlags & SMB_ACE4_DIRECTORY_INHERIT_ACE)
471 || !isdir && !(ace.aceFlags & SMB_ACE4_FILE_INHERIT_ACE)) {
472 DEBUG(10, ("non inheriting ace type: %d, iflags: %x, "
473 "flags: %x, mask: %x, who: %d\n",
474 ace.aceType, ace.flags, ace.aceFlags,
475 ace.aceMask, ace.who.id));
476 continue;
477 }
478 DEBUG(10, ("inheriting ace type: %d, iflags: %x, "
479 "flags: %x, mask: %x, who: %d\n",
480 ace.aceType, ace.flags, ace.aceFlags,
481 ace.aceMask, ace.who.id));
482 ace.aceFlags |= SMB_ACE4_INHERITED_ACE;
483 if ((isdir && (ace.aceFlags & SMB_ACE4_DIRECTORY_INHERIT_ACE)
484 || !isdir && (ace.aceFlags & SMB_ACE4_FILE_INHERIT_ACE))
485 && ace.aceFlags & SMB_ACE4_INHERIT_ONLY_ACE) {
486 ace.aceFlags &= ~SMB_ACE4_INHERIT_ONLY_ACE;
487 }
488 if (ace.aceFlags & SMB_ACE4_NO_PROPAGATE_INHERIT_ACE) {
489 ace.aceFlags &= ~SMB_ACE4_FILE_INHERIT_ACE;
490 ace.aceFlags &= ~SMB_ACE4_DIRECTORY_INHERIT_ACE;
491 ace.aceFlags &= ~SMB_ACE4_NO_PROPAGATE_INHERIT_ACE;
492 }
493 pchildace = smb_add_ace4(pchildacl, &ace);
494 if (pchildace == NULL) {
495 DEBUG(0, ("talloc failed\n"));
496 TALLOC_FREE(frame);
497 errno = ENOMEM;
498 return NULL;
499 }
500 }
501
502 /* Set a default ACL if we didn't inherit anything. */
503 if (smb_first_ace4(pchildacl) == NULL) {
504 TALLOC_FREE(pchildacl);
505 pchildacl = nfs4acls_defaultacl(mem_ctx);
506 }
507
508 /* store the returned ACL to get it directly in the
509 future and avoid dynamic inheritance behavior. */
510 nfs4acl_xattr_set_smb4acl(handle, path, pchildacl);
511
512 TALLOC_FREE(frame);
513 return pchildacl;
514 }
515
516 static NTSTATUS nfs4acl_xattr_fget_nt_acl(struct vfs_handle_struct *handle,
517 struct files_struct *fsp,
518 uint32 security_info,
519 TALLOC_CTX *mem_ctx,
520 struct security_descriptor **ppdesc)
521 {
522 SMB4ACL_T *pacl;
523 NTSTATUS status;
524 TALLOC_CTX *frame = talloc_stackframe();
525
526 status = nfs4_fget_nfs4_acl(handle, frame, fsp, &pacl);
527 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
528 pacl = nfs4acls_inheritacl(handle, fsp->fsp_name->base_name,
529 frame);
530 }
531 else if (!NT_STATUS_IS_OK(status)) {
532 TALLOC_FREE(frame);
533 return status;
534 }
535
536 status = smb_fget_nt_acl_nfs4(fsp, security_info, mem_ctx, ppdesc, pacl);
537 TALLOC_FREE(frame);
538 return status;
539 }
540
541 static NTSTATUS nfs4acl_xattr_get_nt_acl(struct vfs_handle_struct *handle,
542 const char *name, uint32 security_info,
543 TALLOC_CTX *mem_ctx,
544 struct security_descriptor **ppdesc)
545 {
546 SMB4ACL_T *pacl;
547 NTSTATUS status;
548 TALLOC_CTX *frame = talloc_stackframe();
549
550 status = nfs4_get_nfs4_acl(handle, frame, name, &pacl);
551 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
552 pacl = nfs4acls_inheritacl(handle, name, frame);
553 }
554 else if (!NT_STATUS_IS_OK(status)) {
555 TALLOC_FREE(frame);
556 return status;
557 }
558
559 status = smb_get_nt_acl_nfs4(handle->conn, name, security_info,
560 mem_ctx, ppdesc,
561 pacl);
562 TALLOC_FREE(frame);
563 return status;
564 }
565
566 static NTSTATUS nfs4acl_xattr_fset_nt_acl(vfs_handle_struct *handle,
567 files_struct *fsp,
568 uint32 security_info_sent,
569 const struct security_descriptor *psd)
570 {
571 return nfs4_set_nt_acl(handle, fsp, security_info_sent, psd);
572 }
573
574 /*
575 As long as Samba does not support an exiplicit method for a module
576 to define conflicting vfs methods, we should override all conflicting
577 methods here. That way, we know we are using the NFSv4 storage
578
579 Function declarations taken from vfs_solarisacl
580 */
581
582 static SMB_ACL_T nfs4acl_xattr_fail__sys_acl_get_file(vfs_handle_struct *handle,
583 const char *path_p,
584 SMB_ACL_TYPE_T type,
585 TALLOC_CTX *mem_ctx)
586 {
587 return (SMB_ACL_T)NULL;
588 }
589
590 static SMB_ACL_T nfs4acl_xattr_fail__sys_acl_get_fd(vfs_handle_struct *handle,
591 files_struct *fsp,
592 TALLOC_CTX *mem_ctx)
593 {
594 return (SMB_ACL_T)NULL;
595 }
596
597 static int nfs4acl_xattr_fail__sys_acl_set_file(vfs_handle_struct *handle,
598 const char *name,
599 SMB_ACL_TYPE_T type,
600 SMB_ACL_T theacl)
601 {
602 return -1;
603 }
604
605 static int nfs4acl_xattr_fail__sys_acl_set_fd(vfs_handle_struct *handle,
606 files_struct *fsp,
607 SMB_ACL_T theacl)
608 {
609 return -1;
610 }
611
612 static int nfs4acl_xattr_fail__sys_acl_delete_def_file(vfs_handle_struct *handle,
613 const char *path)
614 {
615 return -1;
616 }
617
618 static int nfs4acl_xattr_fail__sys_acl_blob_get_file(vfs_handle_struct *handle, const char *path_p, TALLOC_CTX *mem_ctx, char **blob_description, DATA_BLOB *blob)
619 {
620 return -1;
621 }
622
623 static int nfs4acl_xattr_fail__sys_acl_blob_get_fd(vfs_handle_struct *handle, files_struct *fsp, TALLOC_CTX *mem_ctx, char **blob_description, DATA_BLOB *blob)
624 {
625 return -1;
626 }
627
628 /* VFS operations structure */
629
630 static struct vfs_fn_pointers nfs4acl_xattr_fns = {
631 .sys_acl_get_file_fn = nfs4acl_xattr_fail__sys_acl_get_file,
632 .sys_acl_get_fd_fn = nfs4acl_xattr_fail__sys_acl_get_fd,
633 .sys_acl_blob_get_file_fn = nfs4acl_xattr_fail__sys_acl_blob_get_file,
634 .sys_acl_blob_get_fd_fn = nfs4acl_xattr_fail__sys_acl_blob_get_fd,
635 .sys_acl_set_file_fn = nfs4acl_xattr_fail__sys_acl_set_file,
636 .sys_acl_set_fd_fn = nfs4acl_xattr_fail__sys_acl_set_fd,
637 .sys_acl_delete_def_file_fn = nfs4acl_xattr_fail__sys_acl_delete_def_file,
638 .fget_nt_acl_fn = nfs4acl_xattr_fget_nt_acl,
639 .get_nt_acl_fn = nfs4acl_xattr_get_nt_acl,
640 .fset_nt_acl_fn = nfs4acl_xattr_fset_nt_acl,
641 };
642
643 NTSTATUS vfs_nfs4acl_xattr_init(void);
644 NTSTATUS vfs_nfs4acl_xattr_init(void)
645 {
646 return smb_register_vfs(SMB_VFS_INTERFACE_VERSION, "nfs4acl_xattr",
647 &nfs4acl_xattr_fns);
648 }
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