Commit | Line | Data |
---|---|---|
1c3344a1 WD |
1 | /* |
2 | * Handle passing Access Control Lists between systems. | |
3 | * | |
4 | * Copyright (C) 1996 Andrew Tridgell | |
5 | * Copyright (C) 1996 Paul Mackerras | |
6 | * Copyright (C) 2006 Wayne Davison | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify | |
4fd842f9 | 9 | * it under the terms of the GNU General Public License version 3 as |
1c53e517 | 10 | * published by the Free Software Foundation. |
1c3344a1 WD |
11 | * |
12 | * This program is distributed in the hope that it will be useful, | |
13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | * GNU General Public License for more details. | |
16 | * | |
17 | * You should have received a copy of the GNU General Public License along | |
4fd842f9 | 18 | * with this program; if not, visit the http://fsf.org website. |
1c3344a1 WD |
19 | */ |
20 | ||
21 | #include "rsync.h" | |
22 | #include "lib/sysacls.h" | |
23 | ||
24 | #ifdef SUPPORT_ACLS | |
25 | ||
26 | extern int dry_run; | |
27 | extern int am_root; | |
28 | extern int read_only; | |
29 | extern int list_only; | |
30 | extern int orig_umask; | |
31 | extern int protocol_version; | |
32 | extern int numeric_ids; | |
33 | extern int inc_recurse; | |
34 | ||
33233b49 | 35 | /* Flags used to indicate what items are being transmitted for an entry. */ |
1c3344a1 | 36 | #define XMIT_USER_OBJ (1<<0) |
030820d5 WD |
37 | #define XMIT_GROUP_OBJ (1<<1) |
38 | #define XMIT_MASK_OBJ (1<<2) | |
39 | #define XMIT_OTHER_OBJ (1<<3) | |
40 | #define XMIT_NAME_LIST (1<<4) | |
1c3344a1 | 41 | |
030820d5 WD |
42 | #define NO_ENTRY ((uchar)0x80) /* Default value of a NON-name-list entry. */ |
43 | ||
44 | #define NAME_IS_USER (1u<<31) /* Bit used only on a name-list entry. */ | |
45 | ||
46 | /* When we send the access bits over the wire, we shift them 2 bits to the | |
47 | * left and use the lower 2 bits as flags (relevant only to a name entry). | |
48 | * This makes the protocol more efficient than sending a value that would | |
49 | * be likely to have its hightest bits set. */ | |
50 | #define XFLAG_NAME_FOLLOWS 0x0001u | |
51 | #define XFLAG_NAME_IS_USER 0x0002u | |
33233b49 | 52 | |
1c3344a1 WD |
53 | /* === ACL structures === */ |
54 | ||
55 | typedef struct { | |
56 | id_t id; | |
030820d5 | 57 | uint32 access; |
1c3344a1 WD |
58 | } id_access; |
59 | ||
60 | typedef struct { | |
61 | id_access *idas; | |
62 | int count; | |
63 | } ida_entries; | |
64 | ||
65 | typedef struct { | |
66 | char *name; | |
67 | uchar len; | |
68 | } idname; | |
69 | ||
1c3344a1 | 70 | typedef struct rsync_acl { |
030820d5 | 71 | ida_entries names; |
1c3344a1 WD |
72 | /* These will be NO_ENTRY if there's no such entry. */ |
73 | uchar user_obj; | |
74 | uchar group_obj; | |
75 | uchar mask_obj; | |
76 | uchar other_obj; | |
77 | } rsync_acl; | |
78 | ||
79 | typedef struct { | |
80 | rsync_acl racl; | |
81 | SMB_ACL_T sacl; | |
82 | } acl_duo; | |
83 | ||
84 | static const rsync_acl empty_rsync_acl = { | |
030820d5 | 85 | {NULL, 0}, NO_ENTRY, NO_ENTRY, NO_ENTRY, NO_ENTRY |
1c3344a1 WD |
86 | }; |
87 | ||
88 | static item_list access_acl_list = EMPTY_ITEM_LIST; | |
89 | static item_list default_acl_list = EMPTY_ITEM_LIST; | |
90 | ||
91 | /* === Calculations on ACL types === */ | |
92 | ||
93 | static const char *str_acl_type(SMB_ACL_TYPE_T type) | |
94 | { | |
95 | return type == SMB_ACL_TYPE_ACCESS ? "SMB_ACL_TYPE_ACCESS" | |
96 | : type == SMB_ACL_TYPE_DEFAULT ? "SMB_ACL_TYPE_DEFAULT" | |
97 | : "unknown SMB_ACL_TYPE_T"; | |
98 | } | |
99 | ||
100 | static int calc_sacl_entries(const rsync_acl *racl) | |
101 | { | |
102 | /* A System ACL always gets user/group/other permission entries. */ | |
030820d5 | 103 | return racl->names.count |
1c3344a1 WD |
104 | #ifdef ACLS_NEED_MASK |
105 | + 4; | |
106 | #else | |
107 | + (racl->mask_obj != NO_ENTRY) + 3; | |
108 | #endif | |
109 | } | |
110 | ||
111 | /* Extracts and returns the permission bits from the ACL. This cannot be | |
112 | * called on an rsync_acl that has NO_ENTRY in any spot but the mask. */ | |
113 | static int rsync_acl_get_perms(const rsync_acl *racl) | |
114 | { | |
115 | return (racl->user_obj << 6) | |
116 | + ((racl->mask_obj != NO_ENTRY ? racl->mask_obj : racl->group_obj) << 3) | |
117 | + racl->other_obj; | |
118 | } | |
119 | ||
120 | /* Removes the permission-bit entries from the ACL because these | |
121 | * can be reconstructed from the file's mode. */ | |
122 | static void rsync_acl_strip_perms(rsync_acl *racl) | |
123 | { | |
124 | racl->user_obj = NO_ENTRY; | |
125 | if (racl->mask_obj == NO_ENTRY) | |
126 | racl->group_obj = NO_ENTRY; | |
127 | else { | |
128 | if (racl->group_obj == racl->mask_obj) | |
129 | racl->group_obj = NO_ENTRY; | |
130 | racl->mask_obj = NO_ENTRY; | |
131 | } | |
132 | racl->other_obj = NO_ENTRY; | |
133 | } | |
134 | ||
135 | /* Given an empty rsync_acl, fake up the permission bits. */ | |
136 | static void rsync_acl_fake_perms(rsync_acl *racl, mode_t mode) | |
137 | { | |
138 | racl->user_obj = (mode >> 6) & 7; | |
139 | racl->group_obj = (mode >> 3) & 7; | |
140 | racl->other_obj = mode & 7; | |
141 | } | |
142 | ||
143 | /* === Rsync ACL functions === */ | |
144 | ||
145 | static rsync_acl *create_racl(void) | |
146 | { | |
147 | rsync_acl *racl = new(rsync_acl); | |
148 | ||
149 | if (!racl) | |
150 | out_of_memory("create_racl"); | |
151 | *racl = empty_rsync_acl; | |
152 | ||
153 | return racl; | |
154 | } | |
155 | ||
156 | static BOOL ida_entries_equal(const ida_entries *ial1, const ida_entries *ial2) | |
157 | { | |
158 | id_access *ida1, *ida2; | |
159 | int count = ial1->count; | |
160 | if (count != ial2->count) | |
161 | return False; | |
162 | ida1 = ial1->idas; | |
163 | ida2 = ial2->idas; | |
164 | for (; count--; ida1++, ida2++) { | |
165 | if (ida1->access != ida2->access || ida1->id != ida2->id) | |
166 | return False; | |
167 | } | |
168 | return True; | |
169 | } | |
170 | ||
171 | static BOOL rsync_acl_equal(const rsync_acl *racl1, const rsync_acl *racl2) | |
172 | { | |
173 | return racl1->user_obj == racl2->user_obj | |
174 | && racl1->group_obj == racl2->group_obj | |
175 | && racl1->mask_obj == racl2->mask_obj | |
176 | && racl1->other_obj == racl2->other_obj | |
030820d5 | 177 | && ida_entries_equal(&racl1->names, &racl2->names); |
1c3344a1 WD |
178 | } |
179 | ||
180 | /* Are the extended (non-permission-bit) entries equal? If so, the rest of | |
181 | * the ACL will be handled by the normal mode-preservation code. This is | |
182 | * only meaningful for access ACLs! Note: the 1st arg is a fully-populated | |
183 | * rsync_acl, but the 2nd parameter can be a condensed rsync_acl, which means | |
184 | * that it might have several of its permission objects set to NO_ENTRY. */ | |
185 | static BOOL rsync_acl_equal_enough(const rsync_acl *racl1, | |
186 | const rsync_acl *racl2, mode_t m) | |
187 | { | |
188 | if ((racl1->mask_obj ^ racl2->mask_obj) & NO_ENTRY) | |
189 | return False; /* One has a mask and the other doesn't */ | |
190 | ||
191 | /* When there's a mask, the group_obj becomes an extended entry. */ | |
192 | if (racl1->mask_obj != NO_ENTRY) { | |
193 | /* A condensed rsync_acl with a mask can only have no | |
194 | * group_obj when it was identical to the mask. This | |
195 | * means that it was also identical to the group attrs | |
196 | * from the mode. */ | |
197 | if (racl2->group_obj == NO_ENTRY) { | |
198 | if (racl1->group_obj != ((m >> 3) & 7)) | |
199 | return False; | |
200 | } else if (racl1->group_obj != racl2->group_obj) | |
201 | return False; | |
202 | } | |
030820d5 | 203 | return ida_entries_equal(&racl1->names, &racl2->names); |
1c3344a1 WD |
204 | } |
205 | ||
206 | static void rsync_acl_free(rsync_acl *racl) | |
207 | { | |
030820d5 WD |
208 | if (racl->names.idas) |
209 | free(racl->names.idas); | |
1c3344a1 WD |
210 | *racl = empty_rsync_acl; |
211 | } | |
212 | ||
213 | void free_acl(statx *sxp) | |
214 | { | |
215 | if (sxp->acc_acl) { | |
216 | rsync_acl_free(sxp->acc_acl); | |
217 | free(sxp->acc_acl); | |
218 | sxp->acc_acl = NULL; | |
219 | } | |
220 | if (sxp->def_acl) { | |
221 | rsync_acl_free(sxp->def_acl); | |
222 | free(sxp->def_acl); | |
223 | sxp->def_acl = NULL; | |
224 | } | |
225 | } | |
226 | ||
030820d5 | 227 | #ifdef SMB_ACL_NEED_SORT |
1c3344a1 WD |
228 | static int id_access_sorter(const void *r1, const void *r2) |
229 | { | |
230 | id_access *ida1 = (id_access *)r1; | |
231 | id_access *ida2 = (id_access *)r2; | |
232 | id_t rid1 = ida1->id, rid2 = ida2->id; | |
030820d5 WD |
233 | if ((ida1->access ^ ida2->access) & NAME_IS_USER) |
234 | return ida1->access & NAME_IS_USER ? -1 : 1; | |
1c3344a1 WD |
235 | return rid1 == rid2 ? 0 : rid1 < rid2 ? -1 : 1; |
236 | } | |
030820d5 | 237 | #endif |
1c3344a1 WD |
238 | |
239 | /* === System ACLs === */ | |
240 | ||
1c3344a1 WD |
241 | /* Unpack system ACL -> rsync ACL verbatim. Return whether we succeeded. */ |
242 | static BOOL unpack_smb_acl(SMB_ACL_T sacl, rsync_acl *racl) | |
243 | { | |
244 | static item_list temp_ida_list = EMPTY_ITEM_LIST; | |
1c3344a1 WD |
245 | SMB_ACL_ENTRY_T entry; |
246 | const char *errfun; | |
247 | int rc; | |
248 | ||
249 | errfun = "sys_acl_get_entry"; | |
250 | for (rc = sys_acl_get_entry(sacl, SMB_ACL_FIRST_ENTRY, &entry); | |
251 | rc == 1; | |
252 | rc = sys_acl_get_entry(sacl, SMB_ACL_NEXT_ENTRY, &entry)) { | |
253 | SMB_ACL_TAG_T tag_type; | |
030820d5 | 254 | uint32 access; |
1c3344a1 WD |
255 | void *qualifier; |
256 | id_access *ida; | |
030820d5 | 257 | if ((rc = sys_acl_get_tag_type(entry, &tag_type)) != 0) { |
1c3344a1 WD |
258 | errfun = "sys_acl_get_tag_type"; |
259 | break; | |
260 | } | |
030820d5 WD |
261 | if ((rc = sys_acl_get_access_bits(entry, &access)) != 0) { |
262 | errfun = "sys_acl_get_access_bits"; | |
1c3344a1 WD |
263 | break; |
264 | } | |
1c3344a1 WD |
265 | /* continue == done with entry; break == store in temporary ida list */ |
266 | switch (tag_type) { | |
267 | case SMB_ACL_USER_OBJ: | |
268 | if (racl->user_obj == NO_ENTRY) | |
269 | racl->user_obj = access; | |
270 | else | |
271 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate USER_OBJ entry ignored\n"); | |
272 | continue; | |
273 | case SMB_ACL_USER: | |
030820d5 | 274 | access |= NAME_IS_USER; |
1c3344a1 WD |
275 | break; |
276 | case SMB_ACL_GROUP_OBJ: | |
277 | if (racl->group_obj == NO_ENTRY) | |
278 | racl->group_obj = access; | |
279 | else | |
280 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate GROUP_OBJ entry ignored\n"); | |
281 | continue; | |
282 | case SMB_ACL_GROUP: | |
283 | break; | |
284 | case SMB_ACL_MASK: | |
285 | if (racl->mask_obj == NO_ENTRY) | |
286 | racl->mask_obj = access; | |
287 | else | |
288 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate MASK entry ignored\n"); | |
289 | continue; | |
290 | case SMB_ACL_OTHER: | |
291 | if (racl->other_obj == NO_ENTRY) | |
292 | racl->other_obj = access; | |
293 | else | |
294 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate OTHER entry ignored\n"); | |
295 | continue; | |
296 | default: | |
297 | rprintf(FINFO, "unpack_smb_acl: warning: entry with unrecognized tag type ignored\n"); | |
298 | continue; | |
299 | } | |
300 | if (!(qualifier = sys_acl_get_qualifier(entry))) { | |
301 | errfun = "sys_acl_get_tag_type"; | |
302 | rc = EINVAL; | |
303 | break; | |
304 | } | |
1c3344a1 WD |
305 | ida = EXPAND_ITEM_LIST(&temp_ida_list, id_access, -10); |
306 | ida->id = *((id_t *)qualifier); | |
307 | ida->access = access; | |
308 | sys_acl_free_qualifier(qualifier, tag_type); | |
309 | } | |
310 | if (rc) { | |
311 | rsyserr(FERROR, errno, "unpack_smb_acl: %s()", errfun); | |
312 | rsync_acl_free(racl); | |
313 | return False; | |
314 | } | |
1c3344a1 | 315 | |
030820d5 WD |
316 | /* Transfer the count id_access items out of the temp_ida_list |
317 | * into the names ida_entries list in racl. */ | |
318 | if (temp_ida_list.count) { | |
319 | #ifdef SMB_ACL_NEED_SORT | |
320 | if (temp_ida_list.count > 1) { | |
321 | qsort(temp_ida_list.items, temp_ida_list.count, | |
322 | sizeof (id_access), id_access_sorter); | |
323 | } | |
324 | #endif | |
325 | if (!(racl->names.idas = new_array(id_access, temp_ida_list.count))) | |
326 | out_of_memory("unpack_smb_acl"); | |
327 | memcpy(racl->names.idas, temp_ida_list.items, | |
328 | temp_ida_list.count * sizeof (id_access)); | |
329 | } else | |
330 | racl->names.idas = NULL; | |
331 | ||
332 | racl->names.count = temp_ida_list.count; | |
333 | ||
334 | /* Truncate the temporary list now that its idas have been saved. */ | |
335 | temp_ida_list.count = 0; | |
1c3344a1 WD |
336 | |
337 | #ifdef ACLS_NEED_MASK | |
030820d5 | 338 | if (!racl->names.count && racl->mask_obj != NO_ENTRY) { |
1c3344a1 WD |
339 | /* Throw away a superfluous mask, but mask off the |
340 | * group perms with it first. */ | |
341 | racl->group_obj &= racl->mask_obj; | |
342 | racl->mask_obj = NO_ENTRY; | |
343 | } | |
344 | #endif | |
345 | ||
346 | return True; | |
347 | } | |
348 | ||
349 | /* Synactic sugar for system calls */ | |
350 | ||
351 | #define CALL_OR_ERROR(func,args,str) \ | |
352 | do { \ | |
353 | if (func args) { \ | |
354 | errfun = str; \ | |
355 | goto error_exit; \ | |
356 | } \ | |
357 | } while (0) | |
358 | ||
359 | #define COE(func,args) CALL_OR_ERROR(func,args,#func) | |
360 | #define COE2(func,args) CALL_OR_ERROR(func,args,NULL) | |
361 | ||
362 | /* Store the permissions in the system ACL entry. */ | |
030820d5 | 363 | static int store_access_in_entry(uint32 access, SMB_ACL_ENTRY_T entry) |
1c3344a1 | 364 | { |
030820d5 WD |
365 | if (sys_acl_set_access_bits(entry, access)) { |
366 | rsyserr(FERROR, errno, "store_access_in_entry sys_acl_set_access_bits()"); | |
367 | return -1; | |
368 | } | |
1c3344a1 | 369 | return 0; |
1c3344a1 WD |
370 | } |
371 | ||
372 | /* Pack rsync ACL -> system ACL verbatim. Return whether we succeeded. */ | |
373 | static BOOL pack_smb_acl(SMB_ACL_T *smb_acl, const rsync_acl *racl) | |
374 | { | |
375 | #ifdef ACLS_NEED_MASK | |
376 | uchar mask_bits; | |
377 | #endif | |
378 | size_t count; | |
379 | id_access *ida; | |
380 | const char *errfun = NULL; | |
381 | SMB_ACL_ENTRY_T entry; | |
382 | ||
383 | if (!(*smb_acl = sys_acl_init(calc_sacl_entries(racl)))) { | |
384 | rsyserr(FERROR, errno, "pack_smb_acl: sys_acl_init()"); | |
385 | return False; | |
386 | } | |
387 | ||
388 | COE( sys_acl_create_entry,(smb_acl, &entry) ); | |
389 | COE( sys_acl_set_tag_type,(entry, SMB_ACL_USER_OBJ) ); | |
030820d5 | 390 | COE2( store_access_in_entry,(racl->user_obj & ~NO_ENTRY, entry) ); |
1c3344a1 | 391 | |
030820d5 WD |
392 | for (ida = racl->names.idas, count = racl->names.count; count; ida++, count--) { |
393 | #ifdef SMB_ACL_NEED_SORT | |
394 | if (!(ida->access & NAME_IS_USER)) | |
395 | break; | |
396 | #endif | |
1c3344a1 | 397 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
030820d5 | 398 | #ifdef SMB_ACL_NEED_SORT |
1c3344a1 | 399 | COE( sys_acl_set_tag_type,(entry, SMB_ACL_USER) ); |
030820d5 WD |
400 | #else |
401 | COE( sys_acl_set_tag_type,(entry, ida->access & NAME_IS_USER | |
402 | ? SMB_ACL_USER : SMB_ACL_GROUP) ); | |
403 | #endif | |
1c3344a1 | 404 | COE( sys_acl_set_qualifier,(entry, (void*)&ida->id) ); |
030820d5 | 405 | COE2( store_access_in_entry,(ida->access & ~NAME_IS_USER, entry) ); |
1c3344a1 WD |
406 | } |
407 | ||
408 | COE( sys_acl_create_entry,(smb_acl, &entry) ); | |
409 | COE( sys_acl_set_tag_type,(entry, SMB_ACL_GROUP_OBJ) ); | |
030820d5 | 410 | COE2( store_access_in_entry,(racl->group_obj & ~NO_ENTRY, entry) ); |
1c3344a1 | 411 | |
030820d5 WD |
412 | #ifdef SMB_ACL_NEED_SORT |
413 | for ( ; count; ida++, count--) { | |
1c3344a1 WD |
414 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
415 | COE( sys_acl_set_tag_type,(entry, SMB_ACL_GROUP) ); | |
416 | COE( sys_acl_set_qualifier,(entry, (void*)&ida->id) ); | |
417 | COE2( store_access_in_entry,(ida->access, entry) ); | |
418 | } | |
030820d5 | 419 | #endif |
1c3344a1 WD |
420 | |
421 | #ifdef ACLS_NEED_MASK | |
030820d5 | 422 | mask_bits = racl->mask_obj == NO_ENTRY ? racl->group_obj & ~NO_ENTRY : racl->mask_obj; |
1c3344a1 WD |
423 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
424 | COE( sys_acl_set_tag_type,(entry, SMB_ACL_MASK) ); | |
425 | COE2( store_access_in_entry,(mask_bits, entry) ); | |
426 | #else | |
427 | if (racl->mask_obj != NO_ENTRY) { | |
428 | COE( sys_acl_create_entry,(smb_acl, &entry) ); | |
429 | COE( sys_acl_set_tag_type,(entry, SMB_ACL_MASK) ); | |
430 | COE2( store_access_in_entry,(racl->mask_obj, entry) ); | |
431 | } | |
432 | #endif | |
433 | ||
434 | COE( sys_acl_create_entry,(smb_acl, &entry) ); | |
435 | COE( sys_acl_set_tag_type,(entry, SMB_ACL_OTHER) ); | |
030820d5 | 436 | COE2( store_access_in_entry,(racl->other_obj & ~NO_ENTRY, entry) ); |
1c3344a1 WD |
437 | |
438 | #ifdef DEBUG | |
439 | if (sys_acl_valid(*smb_acl) < 0) | |
440 | rprintf(FERROR, "pack_smb_acl: warning: system says the ACL I packed is invalid\n"); | |
441 | #endif | |
442 | ||
443 | return True; | |
444 | ||
445 | error_exit: | |
446 | if (errfun) { | |
447 | rsyserr(FERROR, errno, "pack_smb_acl %s()", errfun); | |
448 | } | |
449 | sys_acl_free_acl(*smb_acl); | |
450 | return False; | |
451 | } | |
452 | ||
453 | static int find_matching_rsync_acl(const rsync_acl *racl, SMB_ACL_TYPE_T type, | |
454 | const item_list *racl_list) | |
455 | { | |
456 | static int access_match = -1, default_match = -1; | |
457 | int *match = type == SMB_ACL_TYPE_ACCESS ? &access_match : &default_match; | |
458 | size_t count = racl_list->count; | |
459 | ||
460 | /* If this is the first time through or we didn't match the last | |
461 | * time, then start at the end of the list, which should be the | |
462 | * best place to start hunting. */ | |
463 | if (*match == -1) | |
464 | *match = racl_list->count - 1; | |
465 | while (count--) { | |
466 | rsync_acl *base = racl_list->items; | |
467 | if (rsync_acl_equal(base + *match, racl)) | |
468 | return *match; | |
469 | if (!(*match)--) | |
470 | *match = racl_list->count - 1; | |
471 | } | |
472 | ||
473 | *match = -1; | |
474 | return *match; | |
475 | } | |
476 | ||
477 | static int get_rsync_acl(const char *fname, rsync_acl *racl, | |
478 | SMB_ACL_TYPE_T type, mode_t mode) | |
479 | { | |
480 | SMB_ACL_T sacl = sys_acl_get_file(fname, type); | |
481 | ||
482 | if (sacl) { | |
483 | BOOL ok = unpack_smb_acl(sacl, racl); | |
484 | ||
485 | sys_acl_free_acl(sacl); | |
486 | if (!ok) { | |
487 | return -1; | |
488 | } | |
d4a013ed | 489 | } else if (no_acl_syscall_error(errno)) { |
1c3344a1 WD |
490 | /* ACLs are not supported, so pretend we have a basic ACL. */ |
491 | if (type == SMB_ACL_TYPE_ACCESS) | |
492 | rsync_acl_fake_perms(racl, mode); | |
493 | } else { | |
494 | rsyserr(FERROR, errno, "get_acl: sys_acl_get_file(%s, %s)", | |
495 | fname, str_acl_type(type)); | |
496 | return -1; | |
497 | } | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | /* Return the Access Control List for the given filename. */ | |
503 | int get_acl(const char *fname, statx *sxp) | |
504 | { | |
505 | sxp->acc_acl = create_racl(); | |
506 | if (get_rsync_acl(fname, sxp->acc_acl, SMB_ACL_TYPE_ACCESS, | |
507 | sxp->st.st_mode) < 0) { | |
508 | free_acl(sxp); | |
509 | return -1; | |
510 | } | |
511 | ||
512 | if (S_ISDIR(sxp->st.st_mode)) { | |
513 | sxp->def_acl = create_racl(); | |
514 | if (get_rsync_acl(fname, sxp->def_acl, SMB_ACL_TYPE_DEFAULT, | |
515 | sxp->st.st_mode) < 0) { | |
516 | free_acl(sxp); | |
517 | return -1; | |
518 | } | |
519 | } | |
520 | ||
521 | return 0; | |
522 | } | |
523 | ||
524 | /* === Send functions === */ | |
525 | ||
526 | /* The general strategy with the tag_type <-> character mapping is that | |
527 | * lowercase implies that no qualifier follows, where uppercase does. | |
528 | * A similar idiom for the ACL type (access or default) itself, but | |
529 | * lowercase in this instance means there's no ACL following, so the | |
530 | * ACL is a repeat, so the receiver should reuse the last of the same | |
531 | * type ACL. */ | |
532 | ||
533 | /* Send the ida list over the file descriptor. */ | |
030820d5 | 534 | static void send_ida_entries(const ida_entries *idal, int f) |
1c3344a1 WD |
535 | { |
536 | id_access *ida; | |
537 | size_t count = idal->count; | |
538 | ||
f31514ad | 539 | write_varint(f, idal->count); |
1c3344a1 WD |
540 | |
541 | for (ida = idal->idas; count--; ida++) { | |
030820d5 WD |
542 | uint32 xbits = ida->access << 2; |
543 | char *name; | |
544 | if (ida->access & NAME_IS_USER) { | |
545 | xbits |= XFLAG_NAME_IS_USER; | |
546 | name = add_uid(ida->id); | |
547 | } else | |
548 | name = add_gid(ida->id); | |
f31514ad | 549 | write_varint(f, ida->id); |
1c3344a1 WD |
550 | if (inc_recurse && name) { |
551 | int len = strlen(name); | |
030820d5 | 552 | write_varint(f, xbits | XFLAG_NAME_FOLLOWS); |
1c3344a1 WD |
553 | write_byte(f, len); |
554 | write_buf(f, name, len); | |
555 | } else | |
030820d5 | 556 | write_varint(f, xbits); |
1c3344a1 WD |
557 | } |
558 | } | |
559 | ||
560 | static void send_rsync_acl(rsync_acl *racl, SMB_ACL_TYPE_T type, | |
561 | item_list *racl_list, int f) | |
562 | { | |
563 | int ndx = find_matching_rsync_acl(racl, type, racl_list); | |
564 | ||
565 | /* Send 0 (-1 + 1) to indicate that literal ACL data follows. */ | |
f31514ad | 566 | write_varint(f, ndx + 1); |
1c3344a1 WD |
567 | |
568 | if (ndx < 0) { | |
569 | rsync_acl *new_racl = EXPAND_ITEM_LIST(racl_list, rsync_acl, 1000); | |
570 | uchar flags = 0; | |
571 | ||
572 | if (racl->user_obj != NO_ENTRY) | |
573 | flags |= XMIT_USER_OBJ; | |
1c3344a1 WD |
574 | if (racl->group_obj != NO_ENTRY) |
575 | flags |= XMIT_GROUP_OBJ; | |
1c3344a1 WD |
576 | if (racl->mask_obj != NO_ENTRY) |
577 | flags |= XMIT_MASK_OBJ; | |
1c3344a1 WD |
578 | if (racl->other_obj != NO_ENTRY) |
579 | flags |= XMIT_OTHER_OBJ; | |
030820d5 WD |
580 | if (racl->names.count) |
581 | flags |= XMIT_NAME_LIST; | |
1c3344a1 WD |
582 | |
583 | write_byte(f, flags); | |
584 | ||
585 | if (flags & XMIT_USER_OBJ) | |
030820d5 | 586 | write_varint(f, racl->user_obj); |
1c3344a1 | 587 | if (flags & XMIT_GROUP_OBJ) |
030820d5 | 588 | write_varint(f, racl->group_obj); |
1c3344a1 | 589 | if (flags & XMIT_MASK_OBJ) |
030820d5 | 590 | write_varint(f, racl->mask_obj); |
1c3344a1 | 591 | if (flags & XMIT_OTHER_OBJ) |
030820d5 WD |
592 | write_varint(f, racl->other_obj); |
593 | if (flags & XMIT_NAME_LIST) | |
594 | send_ida_entries(&racl->names, f); | |
1c3344a1 WD |
595 | |
596 | /* Give the allocated data to the new list object. */ | |
597 | *new_racl = *racl; | |
598 | *racl = empty_rsync_acl; | |
599 | } | |
600 | } | |
601 | ||
602 | /* Send the ACL from the statx structure down the indicated file descriptor. | |
603 | * This also frees the ACL data. */ | |
604 | void send_acl(statx *sxp, int f) | |
605 | { | |
1c3344a1 WD |
606 | if (!sxp->acc_acl) { |
607 | sxp->acc_acl = create_racl(); | |
608 | rsync_acl_fake_perms(sxp->acc_acl, sxp->st.st_mode); | |
609 | } | |
610 | /* Avoid sending values that can be inferred from other data. */ | |
611 | rsync_acl_strip_perms(sxp->acc_acl); | |
612 | ||
613 | send_rsync_acl(sxp->acc_acl, SMB_ACL_TYPE_ACCESS, &access_acl_list, f); | |
614 | ||
615 | if (S_ISDIR(sxp->st.st_mode)) { | |
616 | if (!sxp->def_acl) | |
617 | sxp->def_acl = create_racl(); | |
618 | ||
619 | send_rsync_acl(sxp->def_acl, SMB_ACL_TYPE_DEFAULT, &default_acl_list, f); | |
620 | } | |
621 | } | |
622 | ||
623 | /* === Receive functions === */ | |
624 | ||
030820d5 WD |
625 | static uint32 recv_acl_access(uchar *name_follows_ptr, int f) |
626 | { | |
627 | uint32 access = read_varint(f); | |
628 | ||
629 | if (name_follows_ptr) { | |
630 | int flags = access & 3; | |
631 | access >>= 2; | |
632 | if (access & ~SMB_ACL_VALID_NAME_BITS) | |
633 | goto value_error; | |
634 | if (flags & XFLAG_NAME_FOLLOWS) | |
635 | *name_follows_ptr = 1; | |
636 | else | |
637 | *name_follows_ptr = 0; | |
638 | if (flags & XFLAG_NAME_IS_USER) | |
639 | access |= NAME_IS_USER; | |
640 | } else if (access & ~SMB_ACL_VALID_OBJ_BITS) { | |
641 | value_error: | |
642 | rprintf(FERROR, "recv_acl_access: value out of range: %x\n", | |
643 | access); | |
1c3344a1 WD |
644 | exit_cleanup(RERR_STREAMIO); |
645 | } | |
646 | ||
647 | return access; | |
648 | } | |
649 | ||
030820d5 | 650 | static uchar recv_ida_entries(ida_entries *ent, int f) |
1c3344a1 WD |
651 | { |
652 | uchar computed_mask_bits = 0; | |
f31514ad | 653 | int i, count = read_varint(f); |
1c3344a1 WD |
654 | |
655 | if (count) { | |
33233b49 | 656 | if (!(ent->idas = new_array(id_access, count))) |
1c3344a1 WD |
657 | out_of_memory("recv_ida_entries"); |
658 | } else | |
659 | ent->idas = NULL; | |
660 | ||
661 | ent->count = count; | |
662 | ||
663 | for (i = 0; i < count; i++) { | |
a217c453 | 664 | uchar has_name; |
f31514ad | 665 | id_t id = read_varint(f); |
030820d5 | 666 | uint32 access = recv_acl_access(&has_name, f); |
1c3344a1 WD |
667 | |
668 | if (has_name) { | |
030820d5 | 669 | if (access & NAME_IS_USER) |
1c3344a1 WD |
670 | id = recv_user_name(f, id); |
671 | else | |
33233b49 | 672 | id = recv_group_name(f, id, NULL); |
030820d5 | 673 | } else if (access & NAME_IS_USER) { |
1c3344a1 WD |
674 | if (inc_recurse && am_root && !numeric_ids) |
675 | id = match_uid(id); | |
676 | } else { | |
677 | if (inc_recurse && (!am_root || !numeric_ids)) | |
33233b49 | 678 | id = match_gid(id, NULL); |
1c3344a1 WD |
679 | } |
680 | ||
681 | ent->idas[i].id = id; | |
682 | ent->idas[i].access = access; | |
683 | computed_mask_bits |= access; | |
684 | } | |
685 | ||
030820d5 | 686 | return computed_mask_bits & ~NO_ENTRY; |
1c3344a1 WD |
687 | } |
688 | ||
689 | static int recv_rsync_acl(item_list *racl_list, SMB_ACL_TYPE_T type, int f) | |
690 | { | |
691 | uchar computed_mask_bits = 0; | |
692 | acl_duo *duo_item; | |
693 | uchar flags; | |
f31514ad | 694 | int ndx = read_varint(f); |
1c3344a1 WD |
695 | |
696 | if (ndx < 0 || (size_t)ndx > racl_list->count) { | |
697 | rprintf(FERROR, "recv_acl_index: %s ACL index %d > %d\n", | |
e5abce8e | 698 | str_acl_type(type), ndx, (int)racl_list->count); |
1c3344a1 WD |
699 | exit_cleanup(RERR_STREAMIO); |
700 | } | |
701 | ||
702 | if (ndx != 0) | |
703 | return ndx - 1; | |
704 | ||
705 | ndx = racl_list->count; | |
706 | duo_item = EXPAND_ITEM_LIST(racl_list, acl_duo, 1000); | |
707 | duo_item->racl = empty_rsync_acl; | |
708 | ||
709 | flags = read_byte(f); | |
710 | ||
711 | if (flags & XMIT_USER_OBJ) | |
712 | duo_item->racl.user_obj = recv_acl_access(NULL, f); | |
1c3344a1 WD |
713 | if (flags & XMIT_GROUP_OBJ) |
714 | duo_item->racl.group_obj = recv_acl_access(NULL, f); | |
1c3344a1 WD |
715 | if (flags & XMIT_MASK_OBJ) |
716 | duo_item->racl.mask_obj = recv_acl_access(NULL, f); | |
1c3344a1 WD |
717 | if (flags & XMIT_OTHER_OBJ) |
718 | duo_item->racl.other_obj = recv_acl_access(NULL, f); | |
030820d5 WD |
719 | if (flags & XMIT_NAME_LIST) |
720 | computed_mask_bits |= recv_ida_entries(&duo_item->racl.names, f); | |
1c3344a1 | 721 | |
030820d5 | 722 | if (!duo_item->racl.names.count) { |
1c3344a1 WD |
723 | /* If we received a superfluous mask, throw it away. */ |
724 | if (duo_item->racl.mask_obj != NO_ENTRY) { | |
725 | /* Mask off the group perms with it first. */ | |
726 | duo_item->racl.group_obj &= duo_item->racl.mask_obj | NO_ENTRY; | |
727 | duo_item->racl.mask_obj = NO_ENTRY; | |
728 | } | |
729 | } else if (duo_item->racl.mask_obj == NO_ENTRY) /* Must be non-empty with lists. */ | |
030820d5 | 730 | duo_item->racl.mask_obj = (computed_mask_bits | duo_item->racl.group_obj) & ~NO_ENTRY; |
1c3344a1 WD |
731 | |
732 | duo_item->sacl = NULL; | |
733 | ||
734 | return ndx; | |
735 | } | |
736 | ||
737 | /* Receive the ACL info the sender has included for this file-list entry. */ | |
738 | void receive_acl(struct file_struct *file, int f) | |
739 | { | |
740 | F_ACL(file) = recv_rsync_acl(&access_acl_list, SMB_ACL_TYPE_ACCESS, f); | |
741 | ||
742 | if (S_ISDIR(file->mode)) | |
e434f0eb | 743 | F_DIR_DEFACL(file) = recv_rsync_acl(&default_acl_list, SMB_ACL_TYPE_DEFAULT, f); |
1c3344a1 WD |
744 | } |
745 | ||
746 | static int cache_rsync_acl(rsync_acl *racl, SMB_ACL_TYPE_T type, item_list *racl_list) | |
747 | { | |
748 | int ndx; | |
749 | ||
750 | if (!racl) | |
751 | ndx = -1; | |
752 | else if ((ndx = find_matching_rsync_acl(racl, type, racl_list)) == -1) { | |
753 | acl_duo *new_duo; | |
754 | ndx = racl_list->count; | |
755 | new_duo = EXPAND_ITEM_LIST(racl_list, acl_duo, 1000); | |
756 | new_duo->racl = *racl; | |
757 | new_duo->sacl = NULL; | |
758 | *racl = empty_rsync_acl; | |
759 | } | |
760 | ||
761 | return ndx; | |
762 | } | |
763 | ||
764 | /* Turn the ACL data in statx into cached ACL data, setting the index | |
765 | * values in the file struct. */ | |
766 | void cache_acl(struct file_struct *file, statx *sxp) | |
767 | { | |
768 | F_ACL(file) = cache_rsync_acl(sxp->acc_acl, | |
769 | SMB_ACL_TYPE_ACCESS, &access_acl_list); | |
770 | ||
771 | if (S_ISDIR(sxp->st.st_mode)) { | |
e434f0eb | 772 | F_DIR_DEFACL(file) = cache_rsync_acl(sxp->def_acl, |
1c3344a1 WD |
773 | SMB_ACL_TYPE_DEFAULT, &default_acl_list); |
774 | } | |
775 | } | |
776 | ||
777 | static mode_t change_sacl_perms(SMB_ACL_T sacl, rsync_acl *racl, mode_t old_mode, mode_t mode) | |
778 | { | |
779 | SMB_ACL_ENTRY_T entry; | |
780 | const char *errfun; | |
781 | int rc; | |
782 | ||
783 | if (S_ISDIR(mode)) { | |
784 | /* If the sticky bit is going on, it's not safe to allow all | |
785 | * the new ACL to go into effect before it gets set. */ | |
786 | #ifdef SMB_ACL_LOSES_SPECIAL_MODE_BITS | |
787 | if (mode & S_ISVTX) | |
788 | mode &= ~0077; | |
789 | #else | |
790 | if (mode & S_ISVTX && !(old_mode & S_ISVTX)) | |
791 | mode &= ~0077; | |
792 | } else { | |
793 | /* If setuid or setgid is going off, it's not safe to allow all | |
794 | * the new ACL to go into effect before they get cleared. */ | |
795 | if ((old_mode & S_ISUID && !(mode & S_ISUID)) | |
796 | || (old_mode & S_ISGID && !(mode & S_ISGID))) | |
797 | mode &= ~0077; | |
798 | #endif | |
799 | } | |
800 | ||
801 | errfun = "sys_acl_get_entry"; | |
802 | for (rc = sys_acl_get_entry(sacl, SMB_ACL_FIRST_ENTRY, &entry); | |
803 | rc == 1; | |
804 | rc = sys_acl_get_entry(sacl, SMB_ACL_NEXT_ENTRY, &entry)) { | |
805 | SMB_ACL_TAG_T tag_type; | |
030820d5 | 806 | if ((rc = sys_acl_get_tag_type(entry, &tag_type)) != 0) { |
1c3344a1 WD |
807 | errfun = "sys_acl_get_tag_type"; |
808 | break; | |
809 | } | |
810 | switch (tag_type) { | |
811 | case SMB_ACL_USER_OBJ: | |
812 | COE2( store_access_in_entry,((mode >> 6) & 7, entry) ); | |
813 | break; | |
814 | case SMB_ACL_GROUP_OBJ: | |
815 | /* group is only empty when identical to group perms. */ | |
816 | if (racl->group_obj != NO_ENTRY) | |
817 | break; | |
818 | COE2( store_access_in_entry,((mode >> 3) & 7, entry) ); | |
819 | break; | |
820 | case SMB_ACL_MASK: | |
821 | #ifndef ACLS_NEED_MASK | |
822 | /* mask is only empty when we don't need it. */ | |
823 | if (racl->mask_obj == NO_ENTRY) | |
824 | break; | |
825 | #endif | |
826 | COE2( store_access_in_entry,((mode >> 3) & 7, entry) ); | |
827 | break; | |
828 | case SMB_ACL_OTHER: | |
829 | COE2( store_access_in_entry,(mode & 7, entry) ); | |
830 | break; | |
831 | } | |
832 | } | |
833 | if (rc) { | |
834 | error_exit: | |
835 | if (errfun) { | |
836 | rsyserr(FERROR, errno, "change_sacl_perms: %s()", | |
837 | errfun); | |
838 | } | |
839 | return (mode_t)~0; | |
840 | } | |
841 | ||
842 | #ifdef SMB_ACL_LOSES_SPECIAL_MODE_BITS | |
843 | /* Ensure that chmod() will be called to restore any lost setid bits. */ | |
844 | if (old_mode & (S_ISUID | S_ISGID | S_ISVTX) | |
845 | && BITS_EQUAL(old_mode, mode, CHMOD_BITS)) | |
846 | old_mode &= ~(S_ISUID | S_ISGID | S_ISVTX); | |
847 | #endif | |
848 | ||
849 | /* Return the mode of the file on disk, as we will set them. */ | |
850 | return (old_mode & ~ACCESSPERMS) | (mode & ACCESSPERMS); | |
851 | } | |
852 | ||
853 | static int set_rsync_acl(const char *fname, acl_duo *duo_item, | |
854 | SMB_ACL_TYPE_T type, statx *sxp, mode_t mode) | |
855 | { | |
856 | if (type == SMB_ACL_TYPE_DEFAULT | |
857 | && duo_item->racl.user_obj == NO_ENTRY) { | |
858 | if (sys_acl_delete_def_file(fname) < 0) { | |
859 | rsyserr(FERROR, errno, "set_acl: sys_acl_delete_def_file(%s)", | |
860 | fname); | |
861 | return -1; | |
862 | } | |
863 | } else { | |
864 | mode_t cur_mode = sxp->st.st_mode; | |
865 | if (!duo_item->sacl | |
866 | && !pack_smb_acl(&duo_item->sacl, &duo_item->racl)) | |
867 | return -1; | |
868 | if (type == SMB_ACL_TYPE_ACCESS) { | |
869 | cur_mode = change_sacl_perms(duo_item->sacl, &duo_item->racl, | |
870 | cur_mode, mode); | |
871 | if (cur_mode == (mode_t)~0) | |
872 | return 0; | |
873 | } | |
874 | if (sys_acl_set_file(fname, type, duo_item->sacl) < 0) { | |
875 | rsyserr(FERROR, errno, "set_acl: sys_acl_set_file(%s, %s)", | |
876 | fname, str_acl_type(type)); | |
877 | return -1; | |
878 | } | |
879 | if (type == SMB_ACL_TYPE_ACCESS) | |
880 | sxp->st.st_mode = cur_mode; | |
881 | } | |
882 | ||
883 | return 0; | |
884 | } | |
885 | ||
886 | /* Set ACL on indicated filename. | |
887 | * | |
888 | * This sets extended access ACL entries and default ACL. If convenient, | |
889 | * it sets permission bits along with the access ACL and signals having | |
890 | * done so by modifying sxp->st.st_mode. | |
891 | * | |
892 | * Returns 1 for unchanged, 0 for changed, -1 for failed. Call this | |
893 | * with fname set to NULL to just check if the ACL is unchanged. */ | |
894 | int set_acl(const char *fname, const struct file_struct *file, statx *sxp) | |
895 | { | |
896 | int unchanged = 1; | |
897 | int32 ndx; | |
898 | BOOL eq; | |
899 | ||
900 | if (!dry_run && (read_only || list_only)) { | |
901 | errno = EROFS; | |
902 | return -1; | |
903 | } | |
904 | ||
905 | ndx = F_ACL(file); | |
906 | if (ndx >= 0 && (size_t)ndx < access_acl_list.count) { | |
907 | acl_duo *duo_item = access_acl_list.items; | |
908 | duo_item += ndx; | |
909 | eq = sxp->acc_acl | |
910 | && rsync_acl_equal_enough(sxp->acc_acl, &duo_item->racl, file->mode); | |
911 | if (!eq) { | |
912 | unchanged = 0; | |
913 | if (!dry_run && fname | |
914 | && set_rsync_acl(fname, duo_item, SMB_ACL_TYPE_ACCESS, | |
915 | sxp, file->mode) < 0) | |
916 | unchanged = -1; | |
917 | } | |
918 | } | |
919 | ||
920 | if (!S_ISDIR(sxp->st.st_mode)) | |
921 | return unchanged; | |
922 | ||
e434f0eb | 923 | ndx = F_DIR_DEFACL(file); |
1c3344a1 WD |
924 | if (ndx >= 0 && (size_t)ndx < default_acl_list.count) { |
925 | acl_duo *duo_item = default_acl_list.items; | |
926 | duo_item += ndx; | |
927 | eq = sxp->def_acl && rsync_acl_equal(sxp->def_acl, &duo_item->racl); | |
928 | if (!eq) { | |
929 | if (unchanged > 0) | |
930 | unchanged = 0; | |
931 | if (!dry_run && fname | |
932 | && set_rsync_acl(fname, duo_item, SMB_ACL_TYPE_DEFAULT, | |
933 | sxp, file->mode) < 0) | |
934 | unchanged = -1; | |
935 | } | |
936 | } | |
937 | ||
938 | return unchanged; | |
939 | } | |
940 | ||
33233b49 WD |
941 | /* Non-incremental recursion needs to convert all the received IDs. |
942 | * This is done in a single pass after receiving the whole file-list. */ | |
a217c453 | 943 | static void match_racl_ids(const item_list *racl_list) |
1c3344a1 | 944 | { |
a217c453 WD |
945 | int list_cnt, name_cnt; |
946 | acl_duo *duo_item = racl_list->items; | |
947 | for (list_cnt = racl_list->count; list_cnt--; duo_item++) { | |
030820d5 | 948 | ida_entries *idal = &duo_item->racl.names; |
33233b49 | 949 | id_access *ida = idal->idas; |
030820d5 WD |
950 | for (name_cnt = idal->count; name_cnt--; ida++) { |
951 | if (ida->access & NAME_IS_USER) | |
952 | ida->id = match_uid(ida->id); | |
953 | else | |
954 | ida->id = match_gid(ida->id, NULL); | |
955 | } | |
1c3344a1 | 956 | } |
1c3344a1 WD |
957 | } |
958 | ||
a217c453 | 959 | void match_acl_ids(void) |
1c3344a1 | 960 | { |
a217c453 WD |
961 | match_racl_ids(&access_acl_list); |
962 | match_racl_ids(&default_acl_list); | |
1c3344a1 WD |
963 | } |
964 | ||
965 | /* This is used by dest_mode(). */ | |
966 | int default_perms_for_dir(const char *dir) | |
967 | { | |
968 | rsync_acl racl; | |
969 | SMB_ACL_T sacl; | |
970 | BOOL ok; | |
971 | int perms; | |
972 | ||
973 | if (dir == NULL) | |
974 | dir = "."; | |
975 | perms = ACCESSPERMS & ~orig_umask; | |
976 | /* Read the directory's default ACL. If it has none, this will successfully return an empty ACL. */ | |
977 | sacl = sys_acl_get_file(dir, SMB_ACL_TYPE_DEFAULT); | |
978 | if (sacl == NULL) { | |
979 | /* Couldn't get an ACL. Darn. */ | |
980 | switch (errno) { | |
d4a013ed | 981 | #ifdef ENOTSUP |
1c3344a1 | 982 | case ENOTSUP: |
d4a013ed | 983 | #endif |
1c3344a1 WD |
984 | case ENOSYS: |
985 | /* No ACLs are available. */ | |
986 | break; | |
987 | case ENOENT: | |
988 | if (dry_run) { | |
989 | /* We're doing a dry run, so the containing directory | |
990 | * wasn't actually created. Don't worry about it. */ | |
991 | break; | |
992 | } | |
993 | /* Otherwise fall through. */ | |
994 | default: | |
995 | rprintf(FERROR, "default_perms_for_dir: sys_acl_get_file(%s, %s): %s, falling back on umask\n", | |
996 | dir, str_acl_type(SMB_ACL_TYPE_DEFAULT), strerror(errno)); | |
997 | } | |
998 | return perms; | |
999 | } | |
1000 | ||
1001 | /* Convert it. */ | |
1002 | racl = empty_rsync_acl; | |
1003 | ok = unpack_smb_acl(sacl, &racl); | |
1004 | sys_acl_free_acl(sacl); | |
1005 | if (!ok) { | |
1006 | rprintf(FERROR, "default_perms_for_dir: unpack_smb_acl failed, falling back on umask\n"); | |
1007 | return perms; | |
1008 | } | |
1009 | ||
1010 | /* Apply the permission-bit entries of the default ACL, if any. */ | |
1011 | if (racl.user_obj != NO_ENTRY) { | |
1012 | perms = rsync_acl_get_perms(&racl); | |
1013 | if (verbose > 2) | |
1014 | rprintf(FINFO, "got ACL-based default perms %o for directory %s\n", perms, dir); | |
1015 | } | |
1016 | ||
1017 | rsync_acl_free(&racl); | |
1018 | return perms; | |
1019 | } | |
1020 | ||
1021 | #endif /* SUPPORT_ACLS */ |