1 /*-
2 * Copyright (c) 2003-2009 Tim Kientzle
3 * Copyright (c) 2010-2012 Michihiro NAKAJIMA
4 * Copyright (c) 2017 Martin Matuska
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "archive_platform.h"
29
30 #if ARCHIVE_ACL_FREEBSD
31
32 #ifdef HAVE_ERRNO_H
33 #include <errno.h>
34 #endif
35 #ifdef HAVE_FCNTL_H
36 #include <fcntl.h>
37 #endif
38 #ifdef HAVE_SYS_TYPES_H
39 #include <sys/types.h>
40 #endif
41 #ifdef HAVE_SYS_ACL_H
42 #define _ACL_PRIVATE /* For debugging */
43 #include <sys/acl.h>
44 #endif
45
46 #include "archive_entry.h"
47 #include "archive_private.h"
48 #include "archive_read_disk_private.h"
49 #include "archive_write_disk_private.h"
50
51 typedef struct {
52 const int a_perm; /* Libarchive permission or flag */
53 const int p_perm; /* Platform permission or flag */
54 } acl_perm_map_t;
55
56 static const acl_perm_map_t acl_posix_perm_map[] = {
57 {ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},
58 {ARCHIVE_ENTRY_ACL_WRITE, ACL_WRITE},
59 {ARCHIVE_ENTRY_ACL_READ, ACL_READ},
60 };
61
62 static const int acl_posix_perm_map_size =
63 (int)(sizeof(acl_posix_perm_map)/sizeof(acl_posix_perm_map[0]));
64
65 #if ARCHIVE_ACL_FREEBSD_NFS4
66 static const acl_perm_map_t acl_nfs4_perm_map[] = {
67 {ARCHIVE_ENTRY_ACL_EXECUTE, ACL_EXECUTE},
68 {ARCHIVE_ENTRY_ACL_READ_DATA, ACL_READ_DATA},
69 {ARCHIVE_ENTRY_ACL_LIST_DIRECTORY, ACL_LIST_DIRECTORY},
70 {ARCHIVE_ENTRY_ACL_WRITE_DATA, ACL_WRITE_DATA},
71 {ARCHIVE_ENTRY_ACL_ADD_FILE, ACL_ADD_FILE},
72 {ARCHIVE_ENTRY_ACL_APPEND_DATA, ACL_APPEND_DATA},
73 {ARCHIVE_ENTRY_ACL_ADD_SUBDIRECTORY, ACL_ADD_SUBDIRECTORY},
74 {ARCHIVE_ENTRY_ACL_READ_NAMED_ATTRS, ACL_READ_NAMED_ATTRS},
75 {ARCHIVE_ENTRY_ACL_WRITE_NAMED_ATTRS, ACL_WRITE_NAMED_ATTRS},
76 {ARCHIVE_ENTRY_ACL_DELETE_CHILD, ACL_DELETE_CHILD},
77 {ARCHIVE_ENTRY_ACL_READ_ATTRIBUTES, ACL_READ_ATTRIBUTES},
78 {ARCHIVE_ENTRY_ACL_WRITE_ATTRIBUTES, ACL_WRITE_ATTRIBUTES},
79 {ARCHIVE_ENTRY_ACL_DELETE, ACL_DELETE},
80 {ARCHIVE_ENTRY_ACL_READ_ACL, ACL_READ_ACL},
81 {ARCHIVE_ENTRY_ACL_WRITE_ACL, ACL_WRITE_ACL},
82 {ARCHIVE_ENTRY_ACL_WRITE_OWNER, ACL_WRITE_OWNER},
83 {ARCHIVE_ENTRY_ACL_SYNCHRONIZE, ACL_SYNCHRONIZE}
84 };
85
86 static const int acl_nfs4_perm_map_size =
87 (int)(sizeof(acl_nfs4_perm_map)/sizeof(acl_nfs4_perm_map[0]));
88
89 static const acl_perm_map_t acl_nfs4_flag_map[] = {
90 {ARCHIVE_ENTRY_ACL_ENTRY_FILE_INHERIT, ACL_ENTRY_FILE_INHERIT},
91 {ARCHIVE_ENTRY_ACL_ENTRY_DIRECTORY_INHERIT, ACL_ENTRY_DIRECTORY_INHERIT},
92 {ARCHIVE_ENTRY_ACL_ENTRY_NO_PROPAGATE_INHERIT, ACL_ENTRY_NO_PROPAGATE_INHERIT},
93 {ARCHIVE_ENTRY_ACL_ENTRY_INHERIT_ONLY, ACL_ENTRY_INHERIT_ONLY},
94 {ARCHIVE_ENTRY_ACL_ENTRY_SUCCESSFUL_ACCESS, ACL_ENTRY_SUCCESSFUL_ACCESS},
95 {ARCHIVE_ENTRY_ACL_ENTRY_FAILED_ACCESS, ACL_ENTRY_FAILED_ACCESS},
96 #ifdef ACL_ENTRY_INHERITED
97 {ARCHIVE_ENTRY_ACL_ENTRY_INHERITED, ACL_ENTRY_INHERITED}
98 #endif
99 };
100
101 static const int acl_nfs4_flag_map_size =
102 (int)(sizeof(acl_nfs4_flag_map)/sizeof(acl_nfs4_flag_map[0]));
103 #endif /* ARCHIVE_ACL_FREEBSD_NFS4 */
104
105 static int
translate_acl(struct archive_read_disk * a,struct archive_entry * entry,acl_t acl,int default_entry_acl_type)106 translate_acl(struct archive_read_disk *a,
107 struct archive_entry *entry, acl_t acl, int default_entry_acl_type)
108 {
109 #if ARCHIVE_ACL_FREEBSD_NFS4
110 int brand;
111 acl_flagset_t acl_flagset;
112 acl_entry_type_t acl_type;
113 #endif
114 acl_tag_t acl_tag;
115 acl_entry_t acl_entry;
116 acl_permset_t acl_permset;
117 int i, entry_acl_type, perm_map_size;
118 const acl_perm_map_t *perm_map;
119 int r, s, ae_id, ae_tag, ae_perm;
120 void *q;
121 const char *ae_name;
122
123 #if ARCHIVE_ACL_FREEBSD_NFS4
124 // FreeBSD "brands" ACLs as POSIX.1e or NFSv4
125 // Make sure the "brand" on this ACL is consistent
126 // with the default_entry_acl_type bits provided.
127 if (acl_get_brand_np(acl, &brand) != 0) {
128 archive_set_error(&a->archive, errno,
129 "Failed to read ACL brand");
130 return (ARCHIVE_WARN);
131 }
132 switch (brand) {
133 case ACL_BRAND_POSIX:
134 switch (default_entry_acl_type) {
135 case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
136 case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
137 break;
138 default:
139 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
140 "Invalid ACL entry type for POSIX.1e ACL");
141 return (ARCHIVE_WARN);
142 }
143 break;
144 case ACL_BRAND_NFS4:
145 if (default_entry_acl_type & ~ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
146 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
147 "Invalid ACL entry type for NFSv4 ACL");
148 return (ARCHIVE_WARN);
149 }
150 break;
151 default:
152 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
153 "Unknown ACL brand");
154 return (ARCHIVE_WARN);
155 }
156 #endif
157
158 s = acl_get_entry(acl, ACL_FIRST_ENTRY, &acl_entry);
159 if (s == -1) {
160 archive_set_error(&a->archive, errno,
161 "Failed to get first ACL entry");
162 return (ARCHIVE_WARN);
163 }
164
165 while (s == 1) {
166 ae_id = -1;
167 ae_name = NULL;
168 ae_perm = 0;
169
170 if (acl_get_tag_type(acl_entry, &acl_tag) != 0) {
171 archive_set_error(&a->archive, errno,
172 "Failed to get ACL tag type");
173 return (ARCHIVE_WARN);
174 }
175 switch (acl_tag) {
176 case ACL_USER:
177 q = acl_get_qualifier(acl_entry);
178 if (q != NULL) {
179 ae_id = (int)*(uid_t *)q;
180 acl_free(q);
181 ae_name = archive_read_disk_uname(&a->archive,
182 ae_id);
183 }
184 ae_tag = ARCHIVE_ENTRY_ACL_USER;
185 break;
186 case ACL_GROUP:
187 q = acl_get_qualifier(acl_entry);
188 if (q != NULL) {
189 ae_id = (int)*(gid_t *)q;
190 acl_free(q);
191 ae_name = archive_read_disk_gname(&a->archive,
192 ae_id);
193 }
194 ae_tag = ARCHIVE_ENTRY_ACL_GROUP;
195 break;
196 case ACL_MASK:
197 ae_tag = ARCHIVE_ENTRY_ACL_MASK;
198 break;
199 case ACL_USER_OBJ:
200 ae_tag = ARCHIVE_ENTRY_ACL_USER_OBJ;
201 break;
202 case ACL_GROUP_OBJ:
203 ae_tag = ARCHIVE_ENTRY_ACL_GROUP_OBJ;
204 break;
205 case ACL_OTHER:
206 ae_tag = ARCHIVE_ENTRY_ACL_OTHER;
207 break;
208 #if ARCHIVE_ACL_FREEBSD_NFS4
209 case ACL_EVERYONE:
210 ae_tag = ARCHIVE_ENTRY_ACL_EVERYONE;
211 break;
212 #endif
213 default:
214 /* Skip types that libarchive can't support. */
215 s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);
216 continue;
217 }
218
219 // XXX acl_type maps to allow/deny/audit/YYYY bits
220 entry_acl_type = default_entry_acl_type;
221
222 #if ARCHIVE_ACL_FREEBSD_NFS4
223 if (default_entry_acl_type & ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
224 /*
225 * acl_get_entry_type_np() fails with non-NFSv4 ACLs
226 */
227 if (acl_get_entry_type_np(acl_entry, &acl_type) != 0) {
228 archive_set_error(&a->archive, errno, "Failed "
229 "to get ACL type from a NFSv4 ACL entry");
230 return (ARCHIVE_WARN);
231 }
232 switch (acl_type) {
233 case ACL_ENTRY_TYPE_ALLOW:
234 entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALLOW;
235 break;
236 case ACL_ENTRY_TYPE_DENY:
237 entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_DENY;
238 break;
239 case ACL_ENTRY_TYPE_AUDIT:
240 entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_AUDIT;
241 break;
242 case ACL_ENTRY_TYPE_ALARM:
243 entry_acl_type = ARCHIVE_ENTRY_ACL_TYPE_ALARM;
244 break;
245 default:
246 archive_set_error(&a->archive, errno,
247 "Invalid NFSv4 ACL entry type");
248 return (ARCHIVE_WARN);
249 }
250
251 /*
252 * Libarchive stores "flag" (NFSv4 inheritance bits)
253 * in the ae_perm bitmap.
254 *
255 * acl_get_flagset_np() fails with non-NFSv4 ACLs
256 */
257 if (acl_get_flagset_np(acl_entry, &acl_flagset) != 0) {
258 archive_set_error(&a->archive, errno,
259 "Failed to get flagset from a NFSv4 "
260 "ACL entry");
261 return (ARCHIVE_WARN);
262 }
263 for (i = 0; i < acl_nfs4_flag_map_size; ++i) {
264 r = acl_get_flag_np(acl_flagset,
265 acl_nfs4_flag_map[i].p_perm);
266 if (r == -1) {
267 archive_set_error(&a->archive, errno,
268 "Failed to check flag in a NFSv4 "
269 "ACL flagset");
270 return (ARCHIVE_WARN);
271 } else if (r)
272 ae_perm |= acl_nfs4_flag_map[i].a_perm;
273 }
274 }
275 #endif
276
277 if (acl_get_permset(acl_entry, &acl_permset) != 0) {
278 archive_set_error(&a->archive, errno,
279 "Failed to get ACL permission set");
280 return (ARCHIVE_WARN);
281 }
282
283 #if ARCHIVE_ACL_FREEBSD_NFS4
284 if (default_entry_acl_type & ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
285 perm_map_size = acl_nfs4_perm_map_size;
286 perm_map = acl_nfs4_perm_map;
287 } else {
288 #endif
289 perm_map_size = acl_posix_perm_map_size;
290 perm_map = acl_posix_perm_map;
291 #if ARCHIVE_ACL_FREEBSD_NFS4
292 }
293 #endif
294
295 for (i = 0; i < perm_map_size; ++i) {
296 r = acl_get_perm_np(acl_permset, perm_map[i].p_perm);
297 if (r == -1) {
298 archive_set_error(&a->archive, errno,
299 "Failed to check permission in an ACL "
300 "permission set");
301 return (ARCHIVE_WARN);
302 } else if (r)
303 ae_perm |= perm_map[i].a_perm;
304 }
305
306 archive_entry_acl_add_entry(entry, entry_acl_type,
307 ae_perm, ae_tag,
308 ae_id, ae_name);
309
310 s = acl_get_entry(acl, ACL_NEXT_ENTRY, &acl_entry);
311 if (s == -1) {
312 archive_set_error(&a->archive, errno,
313 "Failed to get next ACL entry");
314 return (ARCHIVE_WARN);
315 }
316 }
317 return (ARCHIVE_OK);
318 }
319
320 static int
set_acl(struct archive * a,int fd,const char * name,struct archive_acl * abstract_acl,__LA_MODE_T mode,int ae_requested_type,const char * tname)321 set_acl(struct archive *a, int fd, const char *name,
322 struct archive_acl *abstract_acl, __LA_MODE_T mode,
323 int ae_requested_type, const char *tname)
324 {
325 int acl_type = 0;
326 acl_t acl;
327 acl_entry_t acl_entry;
328 acl_permset_t acl_permset;
329 #if ARCHIVE_ACL_FREEBSD_NFS4
330 acl_flagset_t acl_flagset;
331 int r;
332 #endif
333 int ret;
334 int ae_type, ae_permset, ae_tag, ae_id;
335 int perm_map_size;
336 const acl_perm_map_t *perm_map;
337 uid_t ae_uid;
338 gid_t ae_gid;
339 const char *ae_name;
340 int entries;
341 int i;
342
343 ret = ARCHIVE_OK;
344 entries = archive_acl_reset(abstract_acl, ae_requested_type);
345 if (entries == 0)
346 return (ARCHIVE_OK);
347
348
349 switch (ae_requested_type) {
350 case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
351 acl_type = ACL_TYPE_ACCESS;
352 break;
353 case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
354 acl_type = ACL_TYPE_DEFAULT;
355 break;
356 #if ARCHIVE_ACL_FREEBSD_NFS4
357 case ARCHIVE_ENTRY_ACL_TYPE_NFS4:
358 acl_type = ACL_TYPE_NFS4;
359 break;
360 #endif
361 default:
362 errno = ENOENT;
363 archive_set_error(a, errno, "Unsupported ACL type");
364 return (ARCHIVE_FAILED);
365 }
366
367 if (acl_type == ACL_TYPE_DEFAULT && !S_ISDIR(mode)) {
368 errno = EINVAL;
369 archive_set_error(a, errno,
370 "Cannot set default ACL on non-directory");
371 return (ARCHIVE_WARN);
372 }
373
374 acl = acl_init(entries);
375 if (acl == (acl_t)NULL) {
376 archive_set_error(a, errno,
377 "Failed to initialize ACL working storage");
378 return (ARCHIVE_FAILED);
379 }
380
381 while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type,
382 &ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) {
383 if (acl_create_entry(&acl, &acl_entry) != 0) {
384 archive_set_error(a, errno,
385 "Failed to create a new ACL entry");
386 ret = ARCHIVE_FAILED;
387 goto exit_free;
388 }
389 switch (ae_tag) {
390 case ARCHIVE_ENTRY_ACL_USER:
391 ae_uid = archive_write_disk_uid(a, ae_name, ae_id);
392 acl_set_tag_type(acl_entry, ACL_USER);
393 acl_set_qualifier(acl_entry, &ae_uid);
394 break;
395 case ARCHIVE_ENTRY_ACL_GROUP:
396 ae_gid = archive_write_disk_gid(a, ae_name, ae_id);
397 acl_set_tag_type(acl_entry, ACL_GROUP);
398 acl_set_qualifier(acl_entry, &ae_gid);
399 break;
400 case ARCHIVE_ENTRY_ACL_USER_OBJ:
401 acl_set_tag_type(acl_entry, ACL_USER_OBJ);
402 break;
403 case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
404 acl_set_tag_type(acl_entry, ACL_GROUP_OBJ);
405 break;
406 case ARCHIVE_ENTRY_ACL_MASK:
407 acl_set_tag_type(acl_entry, ACL_MASK);
408 break;
409 case ARCHIVE_ENTRY_ACL_OTHER:
410 acl_set_tag_type(acl_entry, ACL_OTHER);
411 break;
412 #if ARCHIVE_ACL_FREEBSD_NFS4
413 case ARCHIVE_ENTRY_ACL_EVERYONE:
414 acl_set_tag_type(acl_entry, ACL_EVERYONE);
415 break;
416 #endif
417 default:
418 archive_set_error(a, ARCHIVE_ERRNO_MISC,
419 "Unsupported ACL tag");
420 ret = ARCHIVE_FAILED;
421 goto exit_free;
422 }
423
424 #if ARCHIVE_ACL_FREEBSD_NFS4
425 r = 0;
426 switch (ae_type) {
427 case ARCHIVE_ENTRY_ACL_TYPE_ALLOW:
428 r = acl_set_entry_type_np(acl_entry,
429 ACL_ENTRY_TYPE_ALLOW);
430 break;
431 case ARCHIVE_ENTRY_ACL_TYPE_DENY:
432 r = acl_set_entry_type_np(acl_entry,
433 ACL_ENTRY_TYPE_DENY);
434 break;
435 case ARCHIVE_ENTRY_ACL_TYPE_AUDIT:
436 r = acl_set_entry_type_np(acl_entry,
437 ACL_ENTRY_TYPE_AUDIT);
438 break;
439 case ARCHIVE_ENTRY_ACL_TYPE_ALARM:
440 r = acl_set_entry_type_np(acl_entry,
441 ACL_ENTRY_TYPE_ALARM);
442 break;
443 case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
444 case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
445 // These don't translate directly into the system ACL.
446 break;
447 default:
448 archive_set_error(a, ARCHIVE_ERRNO_MISC,
449 "Unsupported ACL entry type");
450 ret = ARCHIVE_FAILED;
451 goto exit_free;
452 }
453
454 if (r != 0) {
455 archive_set_error(a, errno,
456 "Failed to set ACL entry type");
457 ret = ARCHIVE_FAILED;
458 goto exit_free;
459 }
460 #endif
461
462 if (acl_get_permset(acl_entry, &acl_permset) != 0) {
463 archive_set_error(a, errno,
464 "Failed to get ACL permission set");
465 ret = ARCHIVE_FAILED;
466 goto exit_free;
467 }
468 if (acl_clear_perms(acl_permset) != 0) {
469 archive_set_error(a, errno,
470 "Failed to clear ACL permissions");
471 ret = ARCHIVE_FAILED;
472 goto exit_free;
473 }
474 #if ARCHIVE_ACL_FREEBSD_NFS4
475 if (ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
476 perm_map_size = acl_nfs4_perm_map_size;
477 perm_map = acl_nfs4_perm_map;
478 } else {
479 #endif
480 perm_map_size = acl_posix_perm_map_size;
481 perm_map = acl_posix_perm_map;
482 #if ARCHIVE_ACL_FREEBSD_NFS4
483 }
484 #endif
485
486 for (i = 0; i < perm_map_size; ++i) {
487 if (ae_permset & perm_map[i].a_perm) {
488 if (acl_add_perm(acl_permset,
489 perm_map[i].p_perm) != 0) {
490 archive_set_error(a, errno,
491 "Failed to add ACL permission");
492 ret = ARCHIVE_FAILED;
493 goto exit_free;
494 }
495 }
496 }
497
498 #if ARCHIVE_ACL_FREEBSD_NFS4
499 if (ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
500 /*
501 * acl_get_flagset_np() fails with non-NFSv4 ACLs
502 */
503 if (acl_get_flagset_np(acl_entry, &acl_flagset) != 0) {
504 archive_set_error(a, errno,
505 "Failed to get flagset from an NFSv4 "
506 "ACL entry");
507 ret = ARCHIVE_FAILED;
508 goto exit_free;
509 }
510 if (acl_clear_flags_np(acl_flagset) != 0) {
511 archive_set_error(a, errno,
512 "Failed to clear flags from an NFSv4 "
513 "ACL flagset");
514 ret = ARCHIVE_FAILED;
515 goto exit_free;
516 }
517 for (i = 0; i < acl_nfs4_flag_map_size; ++i) {
518 if (ae_permset & acl_nfs4_flag_map[i].a_perm) {
519 if (acl_add_flag_np(acl_flagset,
520 acl_nfs4_flag_map[i].p_perm) != 0) {
521 archive_set_error(a, errno,
522 "Failed to add flag to "
523 "NFSv4 ACL flagset");
524 ret = ARCHIVE_FAILED;
525 goto exit_free;
526 }
527 }
528 }
529 }
530 #endif
531 }
532
533 /* Try restoring the ACL through 'fd' if we can. */
534 if (fd >= 0) {
535 if (acl_set_fd_np(fd, acl, acl_type) == 0)
536 ret = ARCHIVE_OK;
537 else {
538 if (errno == EOPNOTSUPP) {
539 /* Filesystem doesn't support ACLs */
540 ret = ARCHIVE_OK;
541 } else {
542 archive_set_error(a, errno,
543 "Failed to set acl on fd: %s", tname);
544 ret = ARCHIVE_WARN;
545 }
546 }
547 }
548 #if HAVE_ACL_SET_LINK_NP
549 else if (acl_set_link_np(name, acl_type, acl) != 0)
550 #else
551 /* FreeBSD older than 8.0 */
552 else if (S_ISLNK(mode)) {
553 /* acl_set_file() follows symbolic links, skip */
554 ret = ARCHIVE_OK;
555 } else if (acl_set_file(name, acl_type, acl) != 0)
556 #endif
557 {
558 if (errno == EOPNOTSUPP) {
559 /* Filesystem doesn't support ACLs */
560 ret = ARCHIVE_OK;
561 } else {
562 archive_set_error(a, errno, "Failed to set acl: %s",
563 tname);
564 ret = ARCHIVE_WARN;
565 }
566 }
567 exit_free:
568 acl_free(acl);
569 return (ret);
570 }
571
572 int
archive_read_disk_entry_setup_acls(struct archive_read_disk * a,struct archive_entry * entry,int * fd)573 archive_read_disk_entry_setup_acls(struct archive_read_disk *a,
574 struct archive_entry *entry, int *fd)
575 {
576 const char *accpath;
577 acl_t acl;
578 int r;
579
580 accpath = NULL;
581
582 if (*fd < 0) {
583 accpath = archive_read_disk_entry_setup_path(a, entry, fd);
584 if (accpath == NULL)
585 return (ARCHIVE_WARN);
586 }
587
588 archive_entry_acl_clear(entry);
589
590 acl = NULL;
591
592 #if ARCHIVE_ACL_FREEBSD_NFS4
593 /* Try NFSv4 ACL first. */
594 if (*fd >= 0)
595 acl = acl_get_fd_np(*fd, ACL_TYPE_NFS4);
596 else if (!a->follow_symlinks)
597 acl = acl_get_link_np(accpath, ACL_TYPE_NFS4);
598 else
599 acl = acl_get_file(accpath, ACL_TYPE_NFS4);
600
601 /* Ignore "trivial" ACLs that just mirror the file mode. */
602 if (acl != NULL && acl_is_trivial_np(acl, &r) == 0 && r == 1) {
603 acl_free(acl);
604 acl = NULL;
605 return (ARCHIVE_OK);
606 }
607
608 if (acl != NULL) {
609 r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_NFS4);
610 acl_free(acl);
611 acl = NULL;
612
613 if (r != ARCHIVE_OK) {
614 archive_set_error(&a->archive, errno,
615 "Couldn't translate NFSv4 ACLs");
616 }
617
618 return (r);
619 }
620 #endif
621
622 /* Retrieve access ACL from file. */
623 if (*fd >= 0)
624 acl = acl_get_fd_np(*fd, ACL_TYPE_ACCESS);
625 #if HAVE_ACL_GET_LINK_NP
626 else if (!a->follow_symlinks)
627 acl = acl_get_link_np(accpath, ACL_TYPE_ACCESS);
628 #else
629 else if ((!a->follow_symlinks)
630 && (archive_entry_filetype(entry) == AE_IFLNK))
631 /* We can't get the ACL of a symlink, so we assume it can't
632 have one. */
633 acl = NULL;
634 #endif
635 else
636 acl = acl_get_file(accpath, ACL_TYPE_ACCESS);
637
638 #if HAVE_ACL_IS_TRIVIAL_NP
639 /* Ignore "trivial" ACLs that just mirror the file mode. */
640 if (acl != NULL && acl_is_trivial_np(acl, &r) == 0 && r == 1) {
641 acl_free(acl);
642 acl = NULL;
643 }
644 #endif
645
646 if (acl != NULL) {
647 r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_ACCESS);
648 acl_free(acl);
649 acl = NULL;
650
651 if (r != ARCHIVE_OK) {
652 archive_set_error(&a->archive, errno,
653 "Couldn't translate access ACLs");
654 return (r);
655 }
656 }
657
658 /* Only directories can have default ACLs. */
659 if (S_ISDIR(archive_entry_mode(entry))) {
660 if (*fd >= 0)
661 acl = acl_get_fd_np(*fd, ACL_TYPE_DEFAULT);
662 else
663 acl = acl_get_file(accpath, ACL_TYPE_DEFAULT);
664 if (acl != NULL) {
665 r = translate_acl(a, entry, acl,
666 ARCHIVE_ENTRY_ACL_TYPE_DEFAULT);
667 acl_free(acl);
668 if (r != ARCHIVE_OK) {
669 archive_set_error(&a->archive, errno,
670 "Couldn't translate default ACLs");
671 return (r);
672 }
673 }
674 }
675 return (ARCHIVE_OK);
676 }
677
678 int
archive_write_disk_set_acls(struct archive * a,int fd,const char * name,struct archive_acl * abstract_acl,__LA_MODE_T mode)679 archive_write_disk_set_acls(struct archive *a, int fd, const char *name,
680 struct archive_acl *abstract_acl, __LA_MODE_T mode)
681 {
682 int ret = ARCHIVE_OK;
683
684 (void)mode; /* UNUSED */
685
686 if ((archive_acl_types(abstract_acl)
687 & ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) != 0) {
688 if ((archive_acl_types(abstract_acl)
689 & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
690 ret = set_acl(a, fd, name, abstract_acl, mode,
691 ARCHIVE_ENTRY_ACL_TYPE_ACCESS, "access");
692 if (ret != ARCHIVE_OK)
693 return (ret);
694 }
695 if ((archive_acl_types(abstract_acl)
696 & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0)
697 ret = set_acl(a, fd, name, abstract_acl, mode,
698 ARCHIVE_ENTRY_ACL_TYPE_DEFAULT, "default");
699
700 /* Simultaneous POSIX.1e and NFSv4 is not supported */
701 return (ret);
702 }
703 #if ARCHIVE_ACL_FREEBSD_NFS4
704 else if ((archive_acl_types(abstract_acl) &
705 ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0) {
706 ret = set_acl(a, fd, name, abstract_acl, mode,
707 ARCHIVE_ENTRY_ACL_TYPE_NFS4, "nfs4");
708 }
709 #endif
710 return (ret);
711 }
712 #endif /* ARCHIVE_ACL_FREEBSD */
713