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,int ae_requested_type,const char * tname)321 set_acl(struct archive *a, int fd, const char *name,
322 struct archive_acl *abstract_acl,
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 acl = acl_init(entries);
368 if (acl == (acl_t)NULL) {
369 archive_set_error(a, errno,
370 "Failed to initialize ACL working storage");
371 return (ARCHIVE_FAILED);
372 }
373
374 while (archive_acl_next(a, abstract_acl, ae_requested_type, &ae_type,
375 &ae_permset, &ae_tag, &ae_id, &ae_name) == ARCHIVE_OK) {
376 if (acl_create_entry(&acl, &acl_entry) != 0) {
377 archive_set_error(a, errno,
378 "Failed to create a new ACL entry");
379 ret = ARCHIVE_FAILED;
380 goto exit_free;
381 }
382 switch (ae_tag) {
383 case ARCHIVE_ENTRY_ACL_USER:
384 ae_uid = archive_write_disk_uid(a, ae_name, ae_id);
385 acl_set_tag_type(acl_entry, ACL_USER);
386 acl_set_qualifier(acl_entry, &ae_uid);
387 break;
388 case ARCHIVE_ENTRY_ACL_GROUP:
389 ae_gid = archive_write_disk_gid(a, ae_name, ae_id);
390 acl_set_tag_type(acl_entry, ACL_GROUP);
391 acl_set_qualifier(acl_entry, &ae_gid);
392 break;
393 case ARCHIVE_ENTRY_ACL_USER_OBJ:
394 acl_set_tag_type(acl_entry, ACL_USER_OBJ);
395 break;
396 case ARCHIVE_ENTRY_ACL_GROUP_OBJ:
397 acl_set_tag_type(acl_entry, ACL_GROUP_OBJ);
398 break;
399 case ARCHIVE_ENTRY_ACL_MASK:
400 acl_set_tag_type(acl_entry, ACL_MASK);
401 break;
402 case ARCHIVE_ENTRY_ACL_OTHER:
403 acl_set_tag_type(acl_entry, ACL_OTHER);
404 break;
405 #if ARCHIVE_ACL_FREEBSD_NFS4
406 case ARCHIVE_ENTRY_ACL_EVERYONE:
407 acl_set_tag_type(acl_entry, ACL_EVERYONE);
408 break;
409 #endif
410 default:
411 archive_set_error(a, ARCHIVE_ERRNO_MISC,
412 "Unsupported ACL tag");
413 ret = ARCHIVE_FAILED;
414 goto exit_free;
415 }
416
417 #if ARCHIVE_ACL_FREEBSD_NFS4
418 r = 0;
419 switch (ae_type) {
420 case ARCHIVE_ENTRY_ACL_TYPE_ALLOW:
421 r = acl_set_entry_type_np(acl_entry,
422 ACL_ENTRY_TYPE_ALLOW);
423 break;
424 case ARCHIVE_ENTRY_ACL_TYPE_DENY:
425 r = acl_set_entry_type_np(acl_entry,
426 ACL_ENTRY_TYPE_DENY);
427 break;
428 case ARCHIVE_ENTRY_ACL_TYPE_AUDIT:
429 r = acl_set_entry_type_np(acl_entry,
430 ACL_ENTRY_TYPE_AUDIT);
431 break;
432 case ARCHIVE_ENTRY_ACL_TYPE_ALARM:
433 r = acl_set_entry_type_np(acl_entry,
434 ACL_ENTRY_TYPE_ALARM);
435 break;
436 case ARCHIVE_ENTRY_ACL_TYPE_ACCESS:
437 case ARCHIVE_ENTRY_ACL_TYPE_DEFAULT:
438 // These don't translate directly into the system ACL.
439 break;
440 default:
441 archive_set_error(a, ARCHIVE_ERRNO_MISC,
442 "Unsupported ACL entry type");
443 ret = ARCHIVE_FAILED;
444 goto exit_free;
445 }
446
447 if (r != 0) {
448 archive_set_error(a, errno,
449 "Failed to set ACL entry type");
450 ret = ARCHIVE_FAILED;
451 goto exit_free;
452 }
453 #endif
454
455 if (acl_get_permset(acl_entry, &acl_permset) != 0) {
456 archive_set_error(a, errno,
457 "Failed to get ACL permission set");
458 ret = ARCHIVE_FAILED;
459 goto exit_free;
460 }
461 if (acl_clear_perms(acl_permset) != 0) {
462 archive_set_error(a, errno,
463 "Failed to clear ACL permissions");
464 ret = ARCHIVE_FAILED;
465 goto exit_free;
466 }
467 #if ARCHIVE_ACL_FREEBSD_NFS4
468 if (ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
469 perm_map_size = acl_nfs4_perm_map_size;
470 perm_map = acl_nfs4_perm_map;
471 } else {
472 #endif
473 perm_map_size = acl_posix_perm_map_size;
474 perm_map = acl_posix_perm_map;
475 #if ARCHIVE_ACL_FREEBSD_NFS4
476 }
477 #endif
478
479 for (i = 0; i < perm_map_size; ++i) {
480 if (ae_permset & perm_map[i].a_perm) {
481 if (acl_add_perm(acl_permset,
482 perm_map[i].p_perm) != 0) {
483 archive_set_error(a, errno,
484 "Failed to add ACL permission");
485 ret = ARCHIVE_FAILED;
486 goto exit_free;
487 }
488 }
489 }
490
491 #if ARCHIVE_ACL_FREEBSD_NFS4
492 if (ae_requested_type == ARCHIVE_ENTRY_ACL_TYPE_NFS4) {
493 /*
494 * acl_get_flagset_np() fails with non-NFSv4 ACLs
495 */
496 if (acl_get_flagset_np(acl_entry, &acl_flagset) != 0) {
497 archive_set_error(a, errno,
498 "Failed to get flagset from an NFSv4 "
499 "ACL entry");
500 ret = ARCHIVE_FAILED;
501 goto exit_free;
502 }
503 if (acl_clear_flags_np(acl_flagset) != 0) {
504 archive_set_error(a, errno,
505 "Failed to clear flags from an NFSv4 "
506 "ACL flagset");
507 ret = ARCHIVE_FAILED;
508 goto exit_free;
509 }
510 for (i = 0; i < acl_nfs4_flag_map_size; ++i) {
511 if (ae_permset & acl_nfs4_flag_map[i].a_perm) {
512 if (acl_add_flag_np(acl_flagset,
513 acl_nfs4_flag_map[i].p_perm) != 0) {
514 archive_set_error(a, errno,
515 "Failed to add flag to "
516 "NFSv4 ACL flagset");
517 ret = ARCHIVE_FAILED;
518 goto exit_free;
519 }
520 }
521 }
522 }
523 #endif
524 }
525
526 /* Try restoring the ACL through 'fd' if we can. */
527 if (fd >= 0) {
528 if (acl_set_fd_np(fd, acl, acl_type) == 0)
529 ret = ARCHIVE_OK;
530 else {
531 if (errno == EOPNOTSUPP) {
532 /* Filesystem doesn't support ACLs */
533 ret = ARCHIVE_OK;
534 } else {
535 archive_set_error(a, errno,
536 "Failed to set acl on fd: %s", tname);
537 ret = ARCHIVE_WARN;
538 }
539 }
540 }
541 #if HAVE_ACL_SET_LINK_NP
542 else if (acl_set_link_np(name, acl_type, acl) != 0)
543 #else
544 /* FreeBSD older than 8.0 */
545 else if (acl_set_file(name, acl_type, acl) != 0)
546 #endif
547 {
548 if (errno == EOPNOTSUPP) {
549 /* Filesystem doesn't support ACLs */
550 ret = ARCHIVE_OK;
551 } else {
552 archive_set_error(a, errno, "Failed to set acl: %s",
553 tname);
554 ret = ARCHIVE_WARN;
555 }
556 }
557 exit_free:
558 acl_free(acl);
559 return (ret);
560 }
561
562 int
archive_read_disk_entry_setup_acls(struct archive_read_disk * a,struct archive_entry * entry,int * fd)563 archive_read_disk_entry_setup_acls(struct archive_read_disk *a,
564 struct archive_entry *entry, int *fd)
565 {
566 const char *accpath;
567 acl_t acl;
568 int r;
569
570 accpath = NULL;
571
572 if (*fd < 0) {
573 accpath = archive_read_disk_entry_setup_path(a, entry, fd);
574 if (accpath == NULL)
575 return (ARCHIVE_WARN);
576 }
577
578 archive_entry_acl_clear(entry);
579
580 acl = NULL;
581
582 #if ARCHIVE_ACL_FREEBSD_NFS4
583 /* Try NFSv4 ACL first. */
584 if (*fd >= 0)
585 acl = acl_get_fd_np(*fd, ACL_TYPE_NFS4);
586 else if (!a->follow_symlinks)
587 acl = acl_get_link_np(accpath, ACL_TYPE_NFS4);
588 else
589 acl = acl_get_file(accpath, ACL_TYPE_NFS4);
590
591 /* Ignore "trivial" ACLs that just mirror the file mode. */
592 if (acl != NULL && acl_is_trivial_np(acl, &r) == 0 && r == 1) {
593 acl_free(acl);
594 acl = NULL;
595 return (ARCHIVE_OK);
596 }
597
598 if (acl != NULL) {
599 r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_NFS4);
600 acl_free(acl);
601 acl = NULL;
602
603 if (r != ARCHIVE_OK) {
604 archive_set_error(&a->archive, errno,
605 "Couldn't translate NFSv4 ACLs");
606 }
607
608 return (r);
609 }
610 #endif
611
612 /* Retrieve access ACL from file. */
613 if (*fd >= 0)
614 acl = acl_get_fd_np(*fd, ACL_TYPE_ACCESS);
615 #if HAVE_ACL_GET_LINK_NP
616 else if (!a->follow_symlinks)
617 acl = acl_get_link_np(accpath, ACL_TYPE_ACCESS);
618 #else
619 else if ((!a->follow_symlinks)
620 && (archive_entry_filetype(entry) == AE_IFLNK))
621 /* We can't get the ACL of a symlink, so we assume it can't
622 have one. */
623 acl = NULL;
624 #endif
625 else
626 acl = acl_get_file(accpath, ACL_TYPE_ACCESS);
627
628 #if HAVE_ACL_IS_TRIVIAL_NP
629 /* Ignore "trivial" ACLs that just mirror the file mode. */
630 if (acl != NULL && acl_is_trivial_np(acl, &r) == 0 && r == 1) {
631 acl_free(acl);
632 acl = NULL;
633 }
634 #endif
635
636 if (acl != NULL) {
637 r = translate_acl(a, entry, acl, ARCHIVE_ENTRY_ACL_TYPE_ACCESS);
638 acl_free(acl);
639 acl = NULL;
640
641 if (r != ARCHIVE_OK) {
642 archive_set_error(&a->archive, errno,
643 "Couldn't translate access ACLs");
644 return (r);
645 }
646 }
647
648 /* Only directories can have default ACLs. */
649 if (S_ISDIR(archive_entry_mode(entry))) {
650 if (*fd >= 0)
651 acl = acl_get_fd_np(*fd, ACL_TYPE_DEFAULT);
652 else
653 acl = acl_get_file(accpath, ACL_TYPE_DEFAULT);
654 if (acl != NULL) {
655 r = translate_acl(a, entry, acl,
656 ARCHIVE_ENTRY_ACL_TYPE_DEFAULT);
657 acl_free(acl);
658 if (r != ARCHIVE_OK) {
659 archive_set_error(&a->archive, errno,
660 "Couldn't translate default ACLs");
661 return (r);
662 }
663 }
664 }
665 return (ARCHIVE_OK);
666 }
667
668 int
archive_write_disk_set_acls(struct archive * a,int fd,const char * name,struct archive_acl * abstract_acl,__LA_MODE_T mode)669 archive_write_disk_set_acls(struct archive *a, int fd, const char *name,
670 struct archive_acl *abstract_acl, __LA_MODE_T mode)
671 {
672 int ret = ARCHIVE_OK;
673
674 (void)mode; /* UNUSED */
675
676 if ((archive_acl_types(abstract_acl)
677 & ARCHIVE_ENTRY_ACL_TYPE_POSIX1E) != 0) {
678 if ((archive_acl_types(abstract_acl)
679 & ARCHIVE_ENTRY_ACL_TYPE_ACCESS) != 0) {
680 ret = set_acl(a, fd, name, abstract_acl,
681 ARCHIVE_ENTRY_ACL_TYPE_ACCESS, "access");
682 if (ret != ARCHIVE_OK)
683 return (ret);
684 }
685 if ((archive_acl_types(abstract_acl)
686 & ARCHIVE_ENTRY_ACL_TYPE_DEFAULT) != 0)
687 ret = set_acl(a, fd, name, abstract_acl,
688 ARCHIVE_ENTRY_ACL_TYPE_DEFAULT, "default");
689
690 /* Simultaneous POSIX.1e and NFSv4 is not supported */
691 return (ret);
692 }
693 #if ARCHIVE_ACL_FREEBSD_NFS4
694 else if ((archive_acl_types(abstract_acl) &
695 ARCHIVE_ENTRY_ACL_TYPE_NFS4) != 0) {
696 ret = set_acl(a, fd, name, abstract_acl,
697 ARCHIVE_ENTRY_ACL_TYPE_NFS4, "nfs4");
698 }
699 #endif
700 return (ret);
701 }
702 #endif /* ARCHIVE_ACL_FREEBSD */
703