source: branches/samba-3.3.x/source/modules/nfs4_acls.c

Last change on this file was 221, checked in by Herwig Bauernfeind, 16 years ago

Update Samba 3.3 to 3.3.1
File size: 20.4 KB
Line 
1/*
2 * NFS4 ACL handling
3 *
4 * Copyright (C) Jim McDonough, 2006
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
10 *
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20#include "includes.h"
21#include "nfs4_acls.h"
22
23#undef DBGC_CLASS
24#define DBGC_CLASS DBGC_ACLS
25
26#define SMBACL4_PARAM_TYPE_NAME "nfs4"
27
28extern const struct generic_mapping file_generic_mapping;
29
30#define SMB_ACE4_INT_MAGIC 0x76F8A967
31typedef struct _SMB_ACE4_INT_T
32{
33 uint32 magic;
34 SMB_ACE4PROP_T prop;
35 void *next;
36} SMB_ACE4_INT_T;
37
38#define SMB_ACL4_INT_MAGIC 0x29A3E792
39typedef struct _SMB_ACL4_INT_T
40{
41 uint32 magic;
42 uint32 naces;
43 SMB_ACE4_INT_T *first;
44 SMB_ACE4_INT_T *last;
45} SMB_ACL4_INT_T;
46
47static SMB_ACL4_INT_T *get_validated_aclint(SMB4ACL_T *theacl)
48{
49 SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)theacl;
50 if (theacl==NULL)
51 {
52 DEBUG(2, ("acl is NULL\n"));
53 errno = EINVAL;
54 return NULL;
55 }
56 if (aclint->magic!=SMB_ACL4_INT_MAGIC)
57 {
58 DEBUG(2, ("aclint bad magic 0x%x\n", aclint->magic));
59 errno = EINVAL;
60 return NULL;
61 }
62 return aclint;
63}
64
65static SMB_ACE4_INT_T *get_validated_aceint(SMB4ACE_T *ace)
66{
67 SMB_ACE4_INT_T *aceint = (SMB_ACE4_INT_T *)ace;
68 if (ace==NULL)
69 {
70 DEBUG(2, ("ace is NULL\n"));
71 errno = EINVAL;
72 return NULL;
73 }
74 if (aceint->magic!=SMB_ACE4_INT_MAGIC)
75 {
76 DEBUG(2, ("aceint bad magic 0x%x\n", aceint->magic));
77 errno = EINVAL;
78 return NULL;
79 }
80 return aceint;
81}
82
83SMB4ACL_T *smb_create_smb4acl(void)
84{
85 TALLOC_CTX *mem_ctx = talloc_tos();
86 SMB_ACL4_INT_T *theacl = (SMB_ACL4_INT_T *)TALLOC_ZERO_SIZE(mem_ctx, sizeof(SMB_ACL4_INT_T));
87 if (theacl==NULL)
88 {
89 DEBUG(0, ("TALLOC_SIZE failed\n"));
90 errno = ENOMEM;
91 return NULL;
92 }
93 theacl->magic = SMB_ACL4_INT_MAGIC;
94 /* theacl->first, last = NULL not needed */
95 return (SMB4ACL_T *)theacl;
96}
97
98SMB4ACE_T *smb_add_ace4(SMB4ACL_T *theacl, SMB_ACE4PROP_T *prop)
99{
100 SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
101 TALLOC_CTX *mem_ctx = talloc_tos();
102 SMB_ACE4_INT_T *ace;
103
104 ace = (SMB_ACE4_INT_T *)TALLOC_ZERO_SIZE(mem_ctx, sizeof(SMB_ACE4_INT_T));
105 if (ace==NULL)
106 {
107 DEBUG(0, ("TALLOC_SIZE failed\n"));
108 errno = ENOMEM;
109 return NULL;
110 }
111 ace->magic = SMB_ACE4_INT_MAGIC;
112 /* ace->next = NULL not needed */
113 memcpy(&ace->prop, prop, sizeof(SMB_ACE4PROP_T));
114
115 if (aclint->first==NULL)
116 {
117 aclint->first = ace;
118 aclint->last = ace;
119 } else {
120 aclint->last->next = (void *)ace;
121 aclint->last = ace;
122 }
123 aclint->naces++;
124
125 return (SMB4ACE_T *)ace;
126}
127
128SMB_ACE4PROP_T *smb_get_ace4(SMB4ACE_T *ace)
129{
130 SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
131 if (aceint==NULL)
132 return NULL;
133
134 return &aceint->prop;
135}
136
137SMB4ACE_T *smb_next_ace4(SMB4ACE_T *ace)
138{
139 SMB_ACE4_INT_T *aceint = get_validated_aceint(ace);
140 if (aceint==NULL)
141 return NULL;
142
143 return (SMB4ACE_T *)aceint->next;
144}
145
146SMB4ACE_T *smb_first_ace4(SMB4ACL_T *theacl)
147{
148 SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
149 if (aclint==NULL)
150 return NULL;
151
152 return (SMB4ACE_T *)aclint->first;
153}
154
155uint32 smb_get_naces(SMB4ACL_T *theacl)
156{
157 SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
158 if (aclint==NULL)
159 return 0;
160
161 return aclint->naces;
162}
163
164static int smbacl4_GetFileOwner(struct connection_struct *conn,
165 const char *filename,
166 SMB_STRUCT_STAT *psbuf)
167{
168 memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
169
170 /* Get the stat struct for the owner info. */
171 if (SMB_VFS_STAT(conn, filename, psbuf) != 0)
172 {
173 DEBUG(8, ("SMB_VFS_STAT failed with error %s\n",
174 strerror(errno)));
175 return -1;
176 }
177
178 return 0;
179}
180
181static int smbacl4_fGetFileOwner(files_struct *fsp, SMB_STRUCT_STAT *psbuf)
182{
183 memset(psbuf, 0, sizeof(SMB_STRUCT_STAT));
184
185 if (fsp->is_directory || fsp->fh->fd == -1) {
186 return smbacl4_GetFileOwner(fsp->conn, fsp->fsp_name, psbuf);
187 }
188 if (SMB_VFS_FSTAT(fsp, psbuf) != 0)
189 {
190 DEBUG(8, ("SMB_VFS_FSTAT failed with error %s\n",
191 strerror(errno)));
192 return -1;
193 }
194
195 return 0;
196}
197
198static bool smbacl4_nfs42win(TALLOC_CTX *mem_ctx, SMB4ACL_T *theacl, /* in */
199 DOM_SID *psid_owner, /* in */
200 DOM_SID *psid_group, /* in */
201 bool is_directory, /* in */
202 SEC_ACE **ppnt_ace_list, /* out */
203 int *pgood_aces /* out */
204)
205{
206 SMB_ACL4_INT_T *aclint = (SMB_ACL4_INT_T *)theacl;
207 SMB_ACE4_INT_T *aceint;
208 SEC_ACE *nt_ace_list = NULL;
209 int good_aces = 0;
210
211 DEBUG(10, ("smbacl_nfs42win entered"));
212
213 aclint = get_validated_aclint(theacl);
214 /* We do not check for naces being 0 or theacl being NULL here because it is done upstream */
215 /* in smb_get_nt_acl_nfs4(). */
216 nt_ace_list = (SEC_ACE *)TALLOC_ZERO_SIZE(mem_ctx, aclint->naces * sizeof(SEC_ACE));
217 if (nt_ace_list==NULL)
218 {
219 DEBUG(10, ("talloc error"));
220 errno = ENOMEM;
221 return False;
222 }
223
224 for (aceint=aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
225 uint32_t mask;
226 DOM_SID sid;
227 SMB_ACE4PROP_T *ace = &aceint->prop;
228
229 DEBUG(10, ("magic: 0x%x, type: %d, iflags: %x, flags: %x, mask: %x, "
230 "who: %d\n", aceint->magic, ace->aceType, ace->flags,
231 ace->aceFlags, ace->aceMask, ace->who.id));
232
233 SMB_ASSERT(aceint->magic==SMB_ACE4_INT_MAGIC);
234
235 if (ace->flags & SMB_ACE4_ID_SPECIAL) {
236 switch (ace->who.special_id) {
237 case SMB_ACE4_WHO_OWNER:
238 sid_copy(&sid, psid_owner);
239 break;
240 case SMB_ACE4_WHO_GROUP:
241 sid_copy(&sid, psid_group);
242 break;
243 case SMB_ACE4_WHO_EVERYONE:
244 sid_copy(&sid, &global_sid_World);
245 break;
246 default:
247 DEBUG(8, ("invalid special who id %d "
248 "ignored\n", ace->who.special_id));
249 }
250 } else {
251 if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP) {
252 gid_to_sid(&sid, ace->who.gid);
253 } else {
254 uid_to_sid(&sid, ace->who.uid);
255 }
256 }
257 DEBUG(10, ("mapped %d to %s\n", ace->who.id,
258 sid_string_dbg(&sid)));
259
260 if (is_directory && (ace->aceMask & SMB_ACE4_ADD_FILE)) {
261 ace->aceMask |= SMB_ACE4_DELETE_CHILD;
262 }
263
264 mask = ace->aceMask;
265 init_sec_ace(&nt_ace_list[good_aces++], &sid,
266 ace->aceType, mask,
267 ace->aceFlags & 0xf);
268 }
269
270 *ppnt_ace_list = nt_ace_list;
271 *pgood_aces = good_aces;
272
273 return True;
274}
275
276static NTSTATUS smb_get_nt_acl_nfs4_common(const SMB_STRUCT_STAT *sbuf,
277 uint32 security_info,
278 SEC_DESC **ppdesc, SMB4ACL_T *theacl)
279{
280 int good_aces = 0;
281 DOM_SID sid_owner, sid_group;
282 size_t sd_size = 0;
283 SEC_ACE *nt_ace_list = NULL;
284 SEC_ACL *psa = NULL;
285 TALLOC_CTX *mem_ctx = talloc_tos();
286
287 if (theacl==NULL || smb_get_naces(theacl)==0)
288 return NT_STATUS_ACCESS_DENIED; /* special because we
289 * shouldn't alloc 0 for
290 * win */
291
292 uid_to_sid(&sid_owner, sbuf->st_uid);
293 gid_to_sid(&sid_group, sbuf->st_gid);
294
295 if (smbacl4_nfs42win(mem_ctx, theacl, &sid_owner, &sid_group, S_ISDIR(sbuf->st_mode),
296 &nt_ace_list, &good_aces)==False) {
297 DEBUG(8,("smbacl4_nfs42win failed\n"));
298 return map_nt_error_from_unix(errno);
299 }
300
301 psa = make_sec_acl(mem_ctx, NT4_ACL_REVISION, good_aces, nt_ace_list);
302 if (psa == NULL) {
303 DEBUG(2,("make_sec_acl failed\n"));
304 return NT_STATUS_NO_MEMORY;
305 }
306
307 DEBUG(10,("after make sec_acl\n"));
308 *ppdesc = make_sec_desc(mem_ctx, SEC_DESC_REVISION, SEC_DESC_SELF_RELATIVE,
309 (security_info & OWNER_SECURITY_INFORMATION) ? &sid_owner : NULL,
310 (security_info & GROUP_SECURITY_INFORMATION) ? &sid_group : NULL,
311 NULL, psa, &sd_size);
312 if (*ppdesc==NULL) {
313 DEBUG(2,("make_sec_desc failed\n"));
314 return NT_STATUS_NO_MEMORY;
315 }
316
317 DEBUG(10, ("smb_get_nt_acl_nfs4_common successfully exited with sd_size %d\n",
318 ndr_size_security_descriptor(*ppdesc, 0)));
319
320 return NT_STATUS_OK;
321}
322
323NTSTATUS smb_fget_nt_acl_nfs4(files_struct *fsp,
324 uint32 security_info,
325 SEC_DESC **ppdesc, SMB4ACL_T *theacl)
326{
327 SMB_STRUCT_STAT sbuf;
328
329 DEBUG(10, ("smb_fget_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
330
331 if (smbacl4_fGetFileOwner(fsp, &sbuf)) {
332 return map_nt_error_from_unix(errno);
333 }
334
335 return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, theacl);
336}
337
338NTSTATUS smb_get_nt_acl_nfs4(struct connection_struct *conn,
339 const char *name,
340 uint32 security_info,
341 SEC_DESC **ppdesc, SMB4ACL_T *theacl)
342{
343 SMB_STRUCT_STAT sbuf;
344
345 DEBUG(10, ("smb_get_nt_acl_nfs4 invoked for %s\n", name));
346
347 if (smbacl4_GetFileOwner(conn, name, &sbuf)) {
348 return map_nt_error_from_unix(errno);
349 }
350
351 return smb_get_nt_acl_nfs4_common(&sbuf, security_info, ppdesc, theacl);
352}
353
354enum smbacl4_mode_enum {e_simple=0, e_special=1};
355enum smbacl4_acedup_enum {e_dontcare=0, e_reject=1, e_ignore=2, e_merge=3};
356
357typedef struct _smbacl4_vfs_params {
358 enum smbacl4_mode_enum mode;
359 bool do_chown;
360 enum smbacl4_acedup_enum acedup;
361 struct db_context *sid_mapping_table;
362} smbacl4_vfs_params;
363
364/*
365 * Gather special parameters for NFS4 ACL handling
366 */
367static int smbacl4_get_vfs_params(
368 const char *type_name,
369 files_struct *fsp,
370 smbacl4_vfs_params *params
371)
372{
373 static const struct enum_list enum_smbacl4_modes[] = {
374 { e_simple, "simple" },
375 { e_special, "special" }
376 };
377 static const struct enum_list enum_smbacl4_acedups[] = {
378 { e_dontcare, "dontcare" },
379 { e_reject, "reject" },
380 { e_ignore, "ignore" },
381 { e_merge, "merge" },
382 };
383
384 memset(params, 0, sizeof(smbacl4_vfs_params));
385 params->mode = (enum smbacl4_mode_enum)lp_parm_enum(
386 SNUM(fsp->conn), type_name,
387 "mode", enum_smbacl4_modes, e_simple);
388 params->do_chown = lp_parm_bool(SNUM(fsp->conn), type_name,
389 "chown", True);
390 params->acedup = (enum smbacl4_acedup_enum)lp_parm_enum(
391 SNUM(fsp->conn), type_name,
392 "acedup", enum_smbacl4_acedups, e_dontcare);
393
394 DEBUG(10, ("mode:%s, do_chown:%s, acedup: %s\n",
395 enum_smbacl4_modes[params->mode].name,
396 params->do_chown ? "true" : "false",
397 enum_smbacl4_acedups[params->acedup].name));
398
399 return 0;
400}
401
402static void smbacl4_dump_nfs4acl(int level, SMB4ACL_T *theacl)
403{
404 SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
405 SMB_ACE4_INT_T *aceint;
406
407 DEBUG(level, ("NFS4ACL: size=%d\n", aclint->naces));
408
409 for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
410 SMB_ACE4PROP_T *ace = &aceint->prop;
411
412 DEBUG(level, ("\tACE: type=%d, flags=0x%x, fflags=0x%x, mask=0x%x, id=%d\n",
413 ace->aceType,
414 ace->aceFlags, ace->flags,
415 ace->aceMask,
416 ace->who.id));
417 }
418}
419
420/*
421 * Find 2 NFS4 who-special ACE property (non-copy!!!)
422 * match nonzero if "special" and who is equal
423 * return ace if found matching; otherwise NULL
424 */
425static SMB_ACE4PROP_T *smbacl4_find_equal_special(
426 SMB4ACL_T *theacl,
427 SMB_ACE4PROP_T *aceNew)
428{
429 SMB_ACL4_INT_T *aclint = get_validated_aclint(theacl);
430 SMB_ACE4_INT_T *aceint;
431
432 for(aceint = aclint->first; aceint!=NULL; aceint=(SMB_ACE4_INT_T *)aceint->next) {
433 SMB_ACE4PROP_T *ace = &aceint->prop;
434
435 if (ace->flags == aceNew->flags &&
436 ace->aceType==aceNew->aceType &&
437 (ace->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)==
438 (aceNew->aceFlags&SMB_ACE4_IDENTIFIER_GROUP)
439 ) {
440 /* keep type safety; e.g. gid is an u.short */
441 if (ace->flags & SMB_ACE4_ID_SPECIAL)
442 {
443 if (ace->who.special_id==aceNew->who.special_id)
444 return ace;
445 } else {
446 if (ace->aceFlags & SMB_ACE4_IDENTIFIER_GROUP)
447 {
448 if (ace->who.gid==aceNew->who.gid)
449 return ace;
450 } else {
451 if (ace->who.uid==aceNew->who.uid)
452 return ace;
453 }
454 }
455 }
456 }
457
458 return NULL;
459}
460
461static bool nfs4_map_sid(smbacl4_vfs_params *params, const DOM_SID *src,
462 DOM_SID *dst)
463{
464 static struct db_context *mapping_db = NULL;
465 TDB_DATA data;
466
467 if (mapping_db == NULL) {
468 const char *dbname = lp_parm_const_string(
469 -1, SMBACL4_PARAM_TYPE_NAME, "sidmap", NULL);
470
471 if (dbname == NULL) {
472 DEBUG(10, ("%s:sidmap not defined\n",
473 SMBACL4_PARAM_TYPE_NAME));
474 return False;
475 }
476
477 become_root();
478 mapping_db = db_open(NULL, dbname, 0, TDB_DEFAULT,
479 O_RDONLY, 0600);
480 unbecome_root();
481
482 if (mapping_db == NULL) {
483 DEBUG(1, ("could not open sidmap: %s\n",
484 strerror(errno)));
485 return False;
486 }
487 }
488
489 if (mapping_db->fetch(mapping_db, NULL,
490 string_term_tdb_data(sid_string_tos(src)),
491 &data) == -1) {
492 DEBUG(10, ("could not find mapping for SID %s\n",
493 sid_string_dbg(src)));
494 return False;
495 }
496
497 if ((data.dptr == NULL) || (data.dsize <= 0)
498 || (data.dptr[data.dsize-1] != '\0')) {
499 DEBUG(5, ("invalid mapping for SID %s\n",
500 sid_string_dbg(src)));
501 TALLOC_FREE(data.dptr);
502 return False;
503 }
504
505 if (!string_to_sid(dst, (char *)data.dptr)) {
506 DEBUG(1, ("invalid mapping %s for SID %s\n",
507 (char *)data.dptr, sid_string_dbg(src)));
508 TALLOC_FREE(data.dptr);
509 return False;
510 }
511
512 TALLOC_FREE(data.dptr);
513
514 return True;
515}
516
517static bool smbacl4_fill_ace4(
518 TALLOC_CTX *mem_ctx,
519 const char *filename,
520 smbacl4_vfs_params *params,
521 uid_t ownerUID,
522 gid_t ownerGID,
523 const SEC_ACE *ace_nt, /* input */
524 SMB_ACE4PROP_T *ace_v4 /* output */
525)
526{
527 DEBUG(10, ("got ace for %s\n", sid_string_dbg(&ace_nt->trustee)));
528
529 memset(ace_v4, 0, sizeof(SMB_ACE4PROP_T));
530 ace_v4->aceType = ace_nt->type; /* only ACCESS|DENY supported right now */
531 ace_v4->aceFlags = ace_nt->flags & SEC_ACE_FLAG_VALID_INHERIT;
532 ace_v4->aceMask = ace_nt->access_mask &
533 (STD_RIGHT_ALL_ACCESS | SA_RIGHT_FILE_ALL_ACCESS);
534
535 se_map_generic(&ace_v4->aceMask, &file_generic_mapping);
536
537 if (ace_v4->aceFlags!=ace_nt->flags)
538 DEBUG(9, ("ace_v4->aceFlags(0x%x)!=ace_nt->flags(0x%x)\n",
539 ace_v4->aceFlags, ace_nt->flags));
540
541 if (ace_v4->aceMask!=ace_nt->access_mask)
542 DEBUG(9, ("ace_v4->aceMask(0x%x)!=ace_nt->access_mask(0x%x)\n",
543 ace_v4->aceMask, ace_nt->access_mask));
544
545 if (sid_equal(&ace_nt->trustee, &global_sid_World)) {
546 ace_v4->who.special_id = SMB_ACE4_WHO_EVERYONE;
547 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
548 } else {
549 const char *dom, *name;
550 enum lsa_SidType type;
551 uid_t uid;
552 gid_t gid;
553 DOM_SID sid;
554
555 sid_copy(&sid, &ace_nt->trustee);
556
557 if (!lookup_sid(mem_ctx, &sid, &dom, &name, &type)) {
558
559 DOM_SID mapped;
560
561 if (!nfs4_map_sid(params, &sid, &mapped)) {
562 DEBUG(1, ("nfs4_acls.c: file [%s]: SID %s "
563 "unknown\n", filename, sid_string_dbg(&sid)));
564 errno = EINVAL;
565 return False;
566 }
567
568 DEBUG(2, ("nfs4_acls.c: file [%s]: mapped SID %s "
569 "to %s\n", filename, sid_string_dbg(&sid), sid_string_dbg(&mapped)));
570
571 if (!lookup_sid(mem_ctx, &mapped, &dom,
572 &name, &type)) {
573 DEBUG(1, ("nfs4_acls.c: file [%s]: SID %s "
574 "mapped from %s is unknown\n",
575 filename, sid_string_dbg(&mapped), sid_string_dbg(&sid)));
576 errno = EINVAL;
577 return False;
578 }
579
580 sid_copy(&sid, &mapped);
581 }
582
583 if (type == SID_NAME_USER) {
584 if (!sid_to_uid(&sid, &uid)) {
585 DEBUG(1, ("nfs4_acls.c: file [%s]: could not "
586 "convert %s to uid\n", filename,
587 sid_string_dbg(&sid)));
588 return False;
589 }
590
591 if (params->mode==e_special && uid==ownerUID) {
592 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
593 ace_v4->who.special_id = SMB_ACE4_WHO_OWNER;
594 } else {
595 ace_v4->who.uid = uid;
596 }
597 } else { /* else group? - TODO check it... */
598 if (!sid_to_gid(&sid, &gid)) {
599 DEBUG(1, ("nfs4_acls.c: file [%s]: could not "
600 "convert %s to gid\n", filename,
601 sid_string_dbg(&sid)));
602 return False;
603 }
604
605 ace_v4->aceFlags |= SMB_ACE4_IDENTIFIER_GROUP;
606
607 if (params->mode==e_special && gid==ownerGID) {
608 ace_v4->flags |= SMB_ACE4_ID_SPECIAL;
609 ace_v4->who.special_id = SMB_ACE4_WHO_GROUP;
610 } else {
611 ace_v4->who.gid = gid;
612 }
613 }
614 }
615
616 return True; /* OK */
617}
618
619static int smbacl4_MergeIgnoreReject(
620 enum smbacl4_acedup_enum acedup,
621 SMB4ACL_T *theacl, /* may modify it */
622 SMB_ACE4PROP_T *ace, /* the "new" ACE */
623 bool *paddNewACE,
624 int i
625)
626{
627 int result = 0;
628 SMB_ACE4PROP_T *ace4found = smbacl4_find_equal_special(theacl, ace);
629 if (ace4found)
630 {
631 switch(acedup)
632 {
633 case e_merge: /* "merge" flags */
634 *paddNewACE = False;
635 ace4found->aceFlags |= ace->aceFlags;
636 ace4found->aceMask |= ace->aceMask;
637 break;
638 case e_ignore: /* leave out this record */
639 *paddNewACE = False;
640 break;
641 case e_reject: /* do an error */
642 DEBUG(8, ("ACL rejected by duplicate nt ace#%d\n", i));
643 errno = EINVAL; /* SHOULD be set on any _real_ error */
644 result = -1;
645 break;
646 default:
647 break;
648 }
649 }
650 return result;
651}
652
653static SMB4ACL_T *smbacl4_win2nfs4(
654 const char *filename,
655 const SEC_ACL *dacl,
656 smbacl4_vfs_params *pparams,
657 uid_t ownerUID,
658 gid_t ownerGID
659)
660{
661 SMB4ACL_T *theacl;
662 uint32 i;
663 TALLOC_CTX *mem_ctx = talloc_tos();
664
665 DEBUG(10, ("smbacl4_win2nfs4 invoked\n"));
666
667 theacl = smb_create_smb4acl();
668 if (theacl==NULL)
669 return NULL;
670
671 for(i=0; i<dacl->num_aces; i++) {
672 SMB_ACE4PROP_T ace_v4;
673 bool addNewACE = True;
674
675 if (!smbacl4_fill_ace4(mem_ctx, filename, pparams,
676 ownerUID, ownerGID,
677 dacl->aces + i, &ace_v4)) {
678 DEBUG(3, ("Could not fill ace for file %s, SID %s\n",
679 filename,
680 sid_string_dbg(&((dacl->aces+i)->trustee))));
681 continue;
682 }
683
684 if (pparams->acedup!=e_dontcare) {
685 if (smbacl4_MergeIgnoreReject(pparams->acedup, theacl,
686 &ace_v4, &addNewACE, i))
687 return NULL;
688 }
689
690 if (addNewACE)
691 smb_add_ace4(theacl, &ace_v4);
692 }
693
694 return theacl;
695}
696
697NTSTATUS smb_set_nt_acl_nfs4(files_struct *fsp,
698 uint32 security_info_sent,
699 const SEC_DESC *psd,
700 set_nfs4acl_native_fn_t set_nfs4_native)
701{
702 smbacl4_vfs_params params;
703 SMB4ACL_T *theacl = NULL;
704 bool result;
705
706 SMB_STRUCT_STAT sbuf;
707 bool set_acl_as_root = false;
708 uid_t newUID = (uid_t)-1;
709 gid_t newGID = (gid_t)-1;
710 int saved_errno;
711
712 DEBUG(10, ("smb_set_nt_acl_nfs4 invoked for %s\n", fsp->fsp_name));
713
714 if ((security_info_sent & (DACL_SECURITY_INFORMATION |
715 GROUP_SECURITY_INFORMATION | OWNER_SECURITY_INFORMATION)) == 0)
716 {
717 DEBUG(9, ("security_info_sent (0x%x) ignored\n",
718 security_info_sent));
719 return NT_STATUS_OK; /* won't show error - later to be refined... */
720 }
721
722 /* Special behaviours */
723 if (smbacl4_get_vfs_params(SMBACL4_PARAM_TYPE_NAME, fsp, &params))
724 return NT_STATUS_NO_MEMORY;
725
726 if (smbacl4_fGetFileOwner(fsp, &sbuf))
727 return map_nt_error_from_unix(errno);
728
729 if (params.do_chown) {
730 /* chown logic is a copy/paste from posix_acl.c:set_nt_acl */
731 NTSTATUS status = unpack_nt_owners(SNUM(fsp->conn), &newUID, &newGID, security_info_sent, psd);
732 if (!NT_STATUS_IS_OK(status)) {
733 DEBUG(8, ("unpack_nt_owners failed"));
734 return status;
735 }
736 if (((newUID != (uid_t)-1) && (sbuf.st_uid != newUID)) ||
737 ((newGID != (gid_t)-1) && (sbuf.st_gid != newGID))) {
738 if(try_chown(fsp->conn, fsp->fsp_name, newUID, newGID)) {
739 DEBUG(3,("chown %s, %u, %u failed. Error = %s.\n",
740 fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID,
741 strerror(errno)));
742 return map_nt_error_from_unix(errno);
743 }
744
745 DEBUG(10,("chown %s, %u, %u succeeded.\n",
746 fsp->fsp_name, (unsigned int)newUID, (unsigned int)newGID));
747 if (smbacl4_GetFileOwner(fsp->conn, fsp->fsp_name, &sbuf))
748 return map_nt_error_from_unix(errno);
749
750 /* If we successfully chowned, we know we must
751 * be able to set the acl, so do it as root.
752 */
753 set_acl_as_root = true;
754 }
755 }
756
757 if (!(security_info_sent & DACL_SECURITY_INFORMATION) || psd->dacl ==NULL) {
758 DEBUG(10, ("no dacl found; security_info_sent = 0x%x\n", security_info_sent));
759 return NT_STATUS_OK;
760 }
761
762 theacl = smbacl4_win2nfs4(fsp->fsp_name, psd->dacl, &params, sbuf.st_uid, sbuf.st_gid);
763 if (!theacl)
764 return map_nt_error_from_unix(errno);
765
766 smbacl4_dump_nfs4acl(10, theacl);
767
768 if (set_acl_as_root) {
769 become_root();
770 }
771 result = set_nfs4_native(fsp, theacl);
772 saved_errno = errno;
773 if (set_acl_as_root) {
774 unbecome_root();
775 }
776 if (result!=True) {
777 errno = saved_errno;
778 DEBUG(10, ("set_nfs4_native failed with %s\n", strerror(errno)));
779 return map_nt_error_from_unix(errno);
780 }
781
782 DEBUG(10, ("smb_set_nt_acl_nfs4 succeeded\n"));
783 return NT_STATUS_OK;
784}
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