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 | |
8e41b68e WD |
9 | * it under the terms of the GNU General Public License as published by |
10 | * the Free Software Foundation; either version 3 of the License, or | |
11 | * (at your option) any later version. | |
1c3344a1 WD |
12 | * |
13 | * This program is distributed in the hope that it will be useful, | |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | * GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License along | |
4fd842f9 | 19 | * with this program; if not, visit the http://fsf.org website. |
1c3344a1 WD |
20 | */ |
21 | ||
22 | #include "rsync.h" | |
23 | #include "lib/sysacls.h" | |
24 | ||
25 | #ifdef SUPPORT_ACLS | |
26 | ||
27 | extern int dry_run; | |
28 | extern int am_root; | |
29 | extern int read_only; | |
30 | extern int list_only; | |
31 | extern int orig_umask; | |
1c3344a1 WD |
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 | ||
13710874 | 213 | void free_acl(stat_x *sxp) |
1c3344a1 WD |
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; |
5b934f51 | 255 | id_t g_u_id; |
1c3344a1 | 256 | id_access *ida; |
5b934f51 WD |
257 | if ((rc = sys_acl_get_info(entry, &tag_type, &access, &g_u_id)) != 0) { |
258 | errfun = "sys_acl_get_info"; | |
1c3344a1 WD |
259 | break; |
260 | } | |
1c3344a1 WD |
261 | /* continue == done with entry; break == store in temporary ida list */ |
262 | switch (tag_type) { | |
5b934f51 | 263 | #ifndef HAVE_OSX_ACLS |
1c3344a1 WD |
264 | case SMB_ACL_USER_OBJ: |
265 | if (racl->user_obj == NO_ENTRY) | |
266 | racl->user_obj = access; | |
267 | else | |
268 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate USER_OBJ entry ignored\n"); | |
269 | continue; | |
1c3344a1 WD |
270 | case SMB_ACL_GROUP_OBJ: |
271 | if (racl->group_obj == NO_ENTRY) | |
272 | racl->group_obj = access; | |
273 | else | |
274 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate GROUP_OBJ entry ignored\n"); | |
275 | continue; | |
1c3344a1 WD |
276 | case SMB_ACL_MASK: |
277 | if (racl->mask_obj == NO_ENTRY) | |
278 | racl->mask_obj = access; | |
279 | else | |
280 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate MASK entry ignored\n"); | |
281 | continue; | |
282 | case SMB_ACL_OTHER: | |
283 | if (racl->other_obj == NO_ENTRY) | |
284 | racl->other_obj = access; | |
285 | else | |
286 | rprintf(FINFO, "unpack_smb_acl: warning: duplicate OTHER entry ignored\n"); | |
287 | continue; | |
5b934f51 WD |
288 | #endif |
289 | case SMB_ACL_USER: | |
290 | access |= NAME_IS_USER; | |
291 | break; | |
292 | case SMB_ACL_GROUP: | |
293 | break; | |
1c3344a1 WD |
294 | default: |
295 | rprintf(FINFO, "unpack_smb_acl: warning: entry with unrecognized tag type ignored\n"); | |
296 | continue; | |
297 | } | |
1c3344a1 | 298 | ida = EXPAND_ITEM_LIST(&temp_ida_list, id_access, -10); |
5b934f51 | 299 | ida->id = g_u_id; |
1c3344a1 | 300 | ida->access = access; |
1c3344a1 WD |
301 | } |
302 | if (rc) { | |
303 | rsyserr(FERROR, errno, "unpack_smb_acl: %s()", errfun); | |
304 | rsync_acl_free(racl); | |
305 | return False; | |
306 | } | |
1c3344a1 | 307 | |
030820d5 WD |
308 | /* Transfer the count id_access items out of the temp_ida_list |
309 | * into the names ida_entries list in racl. */ | |
310 | if (temp_ida_list.count) { | |
311 | #ifdef SMB_ACL_NEED_SORT | |
312 | if (temp_ida_list.count > 1) { | |
313 | qsort(temp_ida_list.items, temp_ida_list.count, | |
314 | sizeof (id_access), id_access_sorter); | |
315 | } | |
316 | #endif | |
317 | if (!(racl->names.idas = new_array(id_access, temp_ida_list.count))) | |
318 | out_of_memory("unpack_smb_acl"); | |
319 | memcpy(racl->names.idas, temp_ida_list.items, | |
320 | temp_ida_list.count * sizeof (id_access)); | |
321 | } else | |
322 | racl->names.idas = NULL; | |
323 | ||
324 | racl->names.count = temp_ida_list.count; | |
325 | ||
326 | /* Truncate the temporary list now that its idas have been saved. */ | |
327 | temp_ida_list.count = 0; | |
1c3344a1 WD |
328 | |
329 | #ifdef ACLS_NEED_MASK | |
030820d5 | 330 | if (!racl->names.count && racl->mask_obj != NO_ENTRY) { |
1c3344a1 WD |
331 | /* Throw away a superfluous mask, but mask off the |
332 | * group perms with it first. */ | |
333 | racl->group_obj &= racl->mask_obj; | |
334 | racl->mask_obj = NO_ENTRY; | |
335 | } | |
336 | #endif | |
337 | ||
338 | return True; | |
339 | } | |
340 | ||
341 | /* Synactic sugar for system calls */ | |
342 | ||
343 | #define CALL_OR_ERROR(func,args,str) \ | |
344 | do { \ | |
345 | if (func args) { \ | |
346 | errfun = str; \ | |
347 | goto error_exit; \ | |
348 | } \ | |
349 | } while (0) | |
350 | ||
351 | #define COE(func,args) CALL_OR_ERROR(func,args,#func) | |
352 | #define COE2(func,args) CALL_OR_ERROR(func,args,NULL) | |
353 | ||
5b934f51 | 354 | #ifndef HAVE_OSX_ACLS |
1c3344a1 | 355 | /* Store the permissions in the system ACL entry. */ |
030820d5 | 356 | static int store_access_in_entry(uint32 access, SMB_ACL_ENTRY_T entry) |
1c3344a1 | 357 | { |
030820d5 WD |
358 | if (sys_acl_set_access_bits(entry, access)) { |
359 | rsyserr(FERROR, errno, "store_access_in_entry sys_acl_set_access_bits()"); | |
360 | return -1; | |
361 | } | |
1c3344a1 | 362 | return 0; |
1c3344a1 | 363 | } |
5b934f51 | 364 | #endif |
1c3344a1 WD |
365 | |
366 | /* Pack rsync ACL -> system ACL verbatim. Return whether we succeeded. */ | |
367 | static BOOL pack_smb_acl(SMB_ACL_T *smb_acl, const rsync_acl *racl) | |
368 | { | |
369 | #ifdef ACLS_NEED_MASK | |
370 | uchar mask_bits; | |
371 | #endif | |
372 | size_t count; | |
373 | id_access *ida; | |
374 | const char *errfun = NULL; | |
375 | SMB_ACL_ENTRY_T entry; | |
376 | ||
377 | if (!(*smb_acl = sys_acl_init(calc_sacl_entries(racl)))) { | |
378 | rsyserr(FERROR, errno, "pack_smb_acl: sys_acl_init()"); | |
379 | return False; | |
380 | } | |
381 | ||
5b934f51 | 382 | #ifndef HAVE_OSX_ACLS |
1c3344a1 | 383 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
5b934f51 WD |
384 | COE( sys_acl_set_info,(entry, SMB_ACL_USER_OBJ, racl->user_obj & ~NO_ENTRY, 0) ); |
385 | #endif | |
1c3344a1 | 386 | |
030820d5 WD |
387 | for (ida = racl->names.idas, count = racl->names.count; count; ida++, count--) { |
388 | #ifdef SMB_ACL_NEED_SORT | |
389 | if (!(ida->access & NAME_IS_USER)) | |
390 | break; | |
391 | #endif | |
1c3344a1 | 392 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
6be5ac61 WD |
393 | COE( sys_acl_set_info, |
394 | (entry, | |
395 | ida->access & NAME_IS_USER ? SMB_ACL_USER : SMB_ACL_GROUP, | |
396 | ida->access & ~NAME_IS_USER, ida->id) ); | |
1c3344a1 WD |
397 | } |
398 | ||
5b934f51 | 399 | #ifndef HAVE_OSX_ACLS |
1c3344a1 | 400 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
5b934f51 | 401 | COE( sys_acl_set_info,(entry, SMB_ACL_GROUP_OBJ, racl->group_obj & ~NO_ENTRY, 0) ); |
1c3344a1 | 402 | |
030820d5 WD |
403 | #ifdef SMB_ACL_NEED_SORT |
404 | for ( ; count; ida++, count--) { | |
1c3344a1 | 405 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
5b934f51 | 406 | COE( sys_acl_set_info,(entry, SMB_ACL_GROUP, ida->access, ida->id) ); |
1c3344a1 | 407 | } |
030820d5 | 408 | #endif |
1c3344a1 WD |
409 | |
410 | #ifdef ACLS_NEED_MASK | |
030820d5 | 411 | mask_bits = racl->mask_obj == NO_ENTRY ? racl->group_obj & ~NO_ENTRY : racl->mask_obj; |
1c3344a1 | 412 | COE( sys_acl_create_entry,(smb_acl, &entry) ); |
5b934f51 | 413 | COE( sys_acl_set_info,(entry, SMB_ACL_MASK, mask_bits, NULL) ); |
1c3344a1 WD |
414 | #else |
415 | if (racl->mask_obj != NO_ENTRY) { | |
416 | COE( sys_acl_create_entry,(smb_acl, &entry) ); | |
5b934f51 | 417 | COE( sys_acl_set_info,(entry, SMB_ACL_MASK, racl->mask_obj, 0) ); |
1c3344a1 WD |
418 | } |
419 | #endif | |
420 | ||
421 | COE( sys_acl_create_entry,(smb_acl, &entry) ); | |
5b934f51 WD |
422 | COE( sys_acl_set_info,(entry, SMB_ACL_OTHER, racl->other_obj & ~NO_ENTRY, 0) ); |
423 | #endif | |
1c3344a1 WD |
424 | |
425 | #ifdef DEBUG | |
426 | if (sys_acl_valid(*smb_acl) < 0) | |
427 | rprintf(FERROR, "pack_smb_acl: warning: system says the ACL I packed is invalid\n"); | |
428 | #endif | |
429 | ||
430 | return True; | |
431 | ||
432 | error_exit: | |
433 | if (errfun) { | |
434 | rsyserr(FERROR, errno, "pack_smb_acl %s()", errfun); | |
435 | } | |
436 | sys_acl_free_acl(*smb_acl); | |
437 | return False; | |
438 | } | |
439 | ||
440 | static int find_matching_rsync_acl(const rsync_acl *racl, SMB_ACL_TYPE_T type, | |
441 | const item_list *racl_list) | |
442 | { | |
443 | static int access_match = -1, default_match = -1; | |
444 | int *match = type == SMB_ACL_TYPE_ACCESS ? &access_match : &default_match; | |
445 | size_t count = racl_list->count; | |
446 | ||
447 | /* If this is the first time through or we didn't match the last | |
448 | * time, then start at the end of the list, which should be the | |
449 | * best place to start hunting. */ | |
450 | if (*match == -1) | |
451 | *match = racl_list->count - 1; | |
452 | while (count--) { | |
453 | rsync_acl *base = racl_list->items; | |
454 | if (rsync_acl_equal(base + *match, racl)) | |
455 | return *match; | |
456 | if (!(*match)--) | |
457 | *match = racl_list->count - 1; | |
458 | } | |
459 | ||
460 | *match = -1; | |
461 | return *match; | |
462 | } | |
463 | ||
464 | static int get_rsync_acl(const char *fname, rsync_acl *racl, | |
465 | SMB_ACL_TYPE_T type, mode_t mode) | |
466 | { | |
f57ab2f7 WD |
467 | SMB_ACL_T sacl; |
468 | ||
469 | #ifdef SUPPORT_XATTRS | |
470 | /* --fake-super support: load ACLs from an xattr. */ | |
471 | if (am_root < 0) { | |
472 | char *buf; | |
473 | size_t len; | |
474 | int cnt; | |
475 | ||
476 | if ((buf = get_xattr_acl(fname, type == SMB_ACL_TYPE_ACCESS, &len)) == NULL) | |
477 | return 0; | |
478 | cnt = (len - 4*4) / (4+4); | |
479 | if (len < 4*4 || len != (size_t)cnt*(4+4) + 4*4) | |
480 | return -1; | |
481 | ||
482 | racl->user_obj = IVAL(buf, 0); | |
483 | racl->group_obj = IVAL(buf, 4); | |
484 | racl->mask_obj = IVAL(buf, 8); | |
485 | racl->other_obj = IVAL(buf, 12); | |
486 | ||
487 | if (cnt) { | |
488 | char *bp = buf + 4*4; | |
489 | id_access *ida; | |
490 | if (!(ida = racl->names.idas = new_array(id_access, cnt))) | |
491 | out_of_memory("get_rsync_acl"); | |
492 | racl->names.count = cnt; | |
493 | for ( ; cnt--; ida++, bp += 4+4) { | |
494 | ida->id = IVAL(bp, 0); | |
495 | ida->access = IVAL(bp, 4); | |
496 | } | |
497 | } | |
498 | free(buf); | |
499 | return 0; | |
500 | } | |
501 | #endif | |
1c3344a1 | 502 | |
f57ab2f7 | 503 | if ((sacl = sys_acl_get_file(fname, type)) != 0) { |
1c3344a1 WD |
504 | BOOL ok = unpack_smb_acl(sacl, racl); |
505 | ||
506 | sys_acl_free_acl(sacl); | |
507 | if (!ok) { | |
508 | return -1; | |
509 | } | |
d4a013ed | 510 | } else if (no_acl_syscall_error(errno)) { |
1c3344a1 WD |
511 | /* ACLs are not supported, so pretend we have a basic ACL. */ |
512 | if (type == SMB_ACL_TYPE_ACCESS) | |
513 | rsync_acl_fake_perms(racl, mode); | |
514 | } else { | |
515 | rsyserr(FERROR, errno, "get_acl: sys_acl_get_file(%s, %s)", | |
516 | fname, str_acl_type(type)); | |
517 | return -1; | |
518 | } | |
519 | ||
520 | return 0; | |
521 | } | |
522 | ||
523 | /* Return the Access Control List for the given filename. */ | |
13710874 | 524 | int get_acl(const char *fname, stat_x *sxp) |
1c3344a1 WD |
525 | { |
526 | sxp->acc_acl = create_racl(); | |
527 | if (get_rsync_acl(fname, sxp->acc_acl, SMB_ACL_TYPE_ACCESS, | |
528 | sxp->st.st_mode) < 0) { | |
529 | free_acl(sxp); | |
530 | return -1; | |
531 | } | |
532 | ||
533 | if (S_ISDIR(sxp->st.st_mode)) { | |
534 | sxp->def_acl = create_racl(); | |
535 | if (get_rsync_acl(fname, sxp->def_acl, SMB_ACL_TYPE_DEFAULT, | |
536 | sxp->st.st_mode) < 0) { | |
537 | free_acl(sxp); | |
538 | return -1; | |
539 | } | |
540 | } | |
541 | ||
542 | return 0; | |
543 | } | |
544 | ||
545 | /* === Send functions === */ | |
546 | ||
1c3344a1 | 547 | /* Send the ida list over the file descriptor. */ |
030820d5 | 548 | static void send_ida_entries(const ida_entries *idal, int f) |
1c3344a1 WD |
549 | { |
550 | id_access *ida; | |
551 | size_t count = idal->count; | |
552 | ||
f31514ad | 553 | write_varint(f, idal->count); |
1c3344a1 WD |
554 | |
555 | for (ida = idal->idas; count--; ida++) { | |
030820d5 WD |
556 | uint32 xbits = ida->access << 2; |
557 | char *name; | |
558 | if (ida->access & NAME_IS_USER) { | |
559 | xbits |= XFLAG_NAME_IS_USER; | |
560 | name = add_uid(ida->id); | |
561 | } else | |
562 | name = add_gid(ida->id); | |
f31514ad | 563 | write_varint(f, ida->id); |
1c3344a1 WD |
564 | if (inc_recurse && name) { |
565 | int len = strlen(name); | |
030820d5 | 566 | write_varint(f, xbits | XFLAG_NAME_FOLLOWS); |
1c3344a1 WD |
567 | write_byte(f, len); |
568 | write_buf(f, name, len); | |
569 | } else | |
030820d5 | 570 | write_varint(f, xbits); |
1c3344a1 WD |
571 | } |
572 | } | |
573 | ||
574 | static void send_rsync_acl(rsync_acl *racl, SMB_ACL_TYPE_T type, | |
575 | item_list *racl_list, int f) | |
576 | { | |
577 | int ndx = find_matching_rsync_acl(racl, type, racl_list); | |
578 | ||
579 | /* Send 0 (-1 + 1) to indicate that literal ACL data follows. */ | |
f31514ad | 580 | write_varint(f, ndx + 1); |
1c3344a1 WD |
581 | |
582 | if (ndx < 0) { | |
583 | rsync_acl *new_racl = EXPAND_ITEM_LIST(racl_list, rsync_acl, 1000); | |
584 | uchar flags = 0; | |
585 | ||
586 | if (racl->user_obj != NO_ENTRY) | |
587 | flags |= XMIT_USER_OBJ; | |
1c3344a1 WD |
588 | if (racl->group_obj != NO_ENTRY) |
589 | flags |= XMIT_GROUP_OBJ; | |
1c3344a1 WD |
590 | if (racl->mask_obj != NO_ENTRY) |
591 | flags |= XMIT_MASK_OBJ; | |
1c3344a1 WD |
592 | if (racl->other_obj != NO_ENTRY) |
593 | flags |= XMIT_OTHER_OBJ; | |
030820d5 WD |
594 | if (racl->names.count) |
595 | flags |= XMIT_NAME_LIST; | |
1c3344a1 WD |
596 | |
597 | write_byte(f, flags); | |
598 | ||
599 | if (flags & XMIT_USER_OBJ) | |
030820d5 | 600 | write_varint(f, racl->user_obj); |
1c3344a1 | 601 | if (flags & XMIT_GROUP_OBJ) |
030820d5 | 602 | write_varint(f, racl->group_obj); |
1c3344a1 | 603 | if (flags & XMIT_MASK_OBJ) |
030820d5 | 604 | write_varint(f, racl->mask_obj); |
1c3344a1 | 605 | if (flags & XMIT_OTHER_OBJ) |
030820d5 WD |
606 | write_varint(f, racl->other_obj); |
607 | if (flags & XMIT_NAME_LIST) | |
608 | send_ida_entries(&racl->names, f); | |
1c3344a1 WD |
609 | |
610 | /* Give the allocated data to the new list object. */ | |
611 | *new_racl = *racl; | |
612 | *racl = empty_rsync_acl; | |
613 | } | |
614 | } | |
615 | ||
13710874 | 616 | /* Send the ACL from the stat_x structure down the indicated file descriptor. |
1c3344a1 | 617 | * This also frees the ACL data. */ |
13710874 | 618 | void send_acl(stat_x *sxp, int f) |
1c3344a1 | 619 | { |
1c3344a1 WD |
620 | if (!sxp->acc_acl) { |
621 | sxp->acc_acl = create_racl(); | |
622 | rsync_acl_fake_perms(sxp->acc_acl, sxp->st.st_mode); | |
623 | } | |
624 | /* Avoid sending values that can be inferred from other data. */ | |
625 | rsync_acl_strip_perms(sxp->acc_acl); | |
626 | ||
627 | send_rsync_acl(sxp->acc_acl, SMB_ACL_TYPE_ACCESS, &access_acl_list, f); | |
628 | ||
629 | if (S_ISDIR(sxp->st.st_mode)) { | |
630 | if (!sxp->def_acl) | |
631 | sxp->def_acl = create_racl(); | |
632 | ||
633 | send_rsync_acl(sxp->def_acl, SMB_ACL_TYPE_DEFAULT, &default_acl_list, f); | |
634 | } | |
635 | } | |
636 | ||
637 | /* === Receive functions === */ | |
638 | ||
030820d5 WD |
639 | static uint32 recv_acl_access(uchar *name_follows_ptr, int f) |
640 | { | |
641 | uint32 access = read_varint(f); | |
642 | ||
643 | if (name_follows_ptr) { | |
644 | int flags = access & 3; | |
645 | access >>= 2; | |
f57ab2f7 | 646 | if (am_root >= 0 && access & ~SMB_ACL_VALID_NAME_BITS) |
030820d5 WD |
647 | goto value_error; |
648 | if (flags & XFLAG_NAME_FOLLOWS) | |
649 | *name_follows_ptr = 1; | |
650 | else | |
651 | *name_follows_ptr = 0; | |
652 | if (flags & XFLAG_NAME_IS_USER) | |
653 | access |= NAME_IS_USER; | |
f57ab2f7 | 654 | } else if (am_root >= 0 && access & ~SMB_ACL_VALID_OBJ_BITS) { |
030820d5 WD |
655 | value_error: |
656 | rprintf(FERROR, "recv_acl_access: value out of range: %x\n", | |
657 | access); | |
1c3344a1 WD |
658 | exit_cleanup(RERR_STREAMIO); |
659 | } | |
660 | ||
661 | return access; | |
662 | } | |
663 | ||
030820d5 | 664 | static uchar recv_ida_entries(ida_entries *ent, int f) |
1c3344a1 WD |
665 | { |
666 | uchar computed_mask_bits = 0; | |
f31514ad | 667 | int i, count = read_varint(f); |
1c3344a1 WD |
668 | |
669 | if (count) { | |
33233b49 | 670 | if (!(ent->idas = new_array(id_access, count))) |
1c3344a1 WD |
671 | out_of_memory("recv_ida_entries"); |
672 | } else | |
673 | ent->idas = NULL; | |
674 | ||
675 | ent->count = count; | |
676 | ||
677 | for (i = 0; i < count; i++) { | |
a217c453 | 678 | uchar has_name; |
f31514ad | 679 | id_t id = read_varint(f); |
030820d5 | 680 | uint32 access = recv_acl_access(&has_name, f); |
1c3344a1 WD |
681 | |
682 | if (has_name) { | |
030820d5 | 683 | if (access & NAME_IS_USER) |
1c3344a1 WD |
684 | id = recv_user_name(f, id); |
685 | else | |
33233b49 | 686 | id = recv_group_name(f, id, NULL); |
030820d5 | 687 | } else if (access & NAME_IS_USER) { |
1c3344a1 WD |
688 | if (inc_recurse && am_root && !numeric_ids) |
689 | id = match_uid(id); | |
690 | } else { | |
691 | if (inc_recurse && (!am_root || !numeric_ids)) | |
33233b49 | 692 | id = match_gid(id, NULL); |
1c3344a1 WD |
693 | } |
694 | ||
695 | ent->idas[i].id = id; | |
696 | ent->idas[i].access = access; | |
697 | computed_mask_bits |= access; | |
698 | } | |
699 | ||
030820d5 | 700 | return computed_mask_bits & ~NO_ENTRY; |
1c3344a1 WD |
701 | } |
702 | ||
703 | static int recv_rsync_acl(item_list *racl_list, SMB_ACL_TYPE_T type, int f) | |
704 | { | |
705 | uchar computed_mask_bits = 0; | |
706 | acl_duo *duo_item; | |
707 | uchar flags; | |
f31514ad | 708 | int ndx = read_varint(f); |
1c3344a1 WD |
709 | |
710 | if (ndx < 0 || (size_t)ndx > racl_list->count) { | |
711 | rprintf(FERROR, "recv_acl_index: %s ACL index %d > %d\n", | |
e5abce8e | 712 | str_acl_type(type), ndx, (int)racl_list->count); |
1c3344a1 WD |
713 | exit_cleanup(RERR_STREAMIO); |
714 | } | |
715 | ||
716 | if (ndx != 0) | |
717 | return ndx - 1; | |
718 | ||
719 | ndx = racl_list->count; | |
720 | duo_item = EXPAND_ITEM_LIST(racl_list, acl_duo, 1000); | |
721 | duo_item->racl = empty_rsync_acl; | |
722 | ||
723 | flags = read_byte(f); | |
724 | ||
725 | if (flags & XMIT_USER_OBJ) | |
726 | duo_item->racl.user_obj = recv_acl_access(NULL, f); | |
1c3344a1 WD |
727 | if (flags & XMIT_GROUP_OBJ) |
728 | duo_item->racl.group_obj = recv_acl_access(NULL, f); | |
1c3344a1 WD |
729 | if (flags & XMIT_MASK_OBJ) |
730 | duo_item->racl.mask_obj = recv_acl_access(NULL, f); | |
1c3344a1 WD |
731 | if (flags & XMIT_OTHER_OBJ) |
732 | duo_item->racl.other_obj = recv_acl_access(NULL, f); | |
030820d5 WD |
733 | if (flags & XMIT_NAME_LIST) |
734 | computed_mask_bits |= recv_ida_entries(&duo_item->racl.names, f); | |
1c3344a1 | 735 | |
f57ab2f7 WD |
736 | #ifdef HAVE_OSX_ACLS |
737 | /* If we received a superfluous mask, throw it away. */ | |
738 | duo_item->racl.mask_obj = NO_ENTRY; | |
739 | #else | |
030820d5 | 740 | if (!duo_item->racl.names.count) { |
1c3344a1 WD |
741 | /* If we received a superfluous mask, throw it away. */ |
742 | if (duo_item->racl.mask_obj != NO_ENTRY) { | |
743 | /* Mask off the group perms with it first. */ | |
744 | duo_item->racl.group_obj &= duo_item->racl.mask_obj | NO_ENTRY; | |
745 | duo_item->racl.mask_obj = NO_ENTRY; | |
746 | } | |
f57ab2f7 | 747 | } else if (duo_item->racl.mask_obj == NO_ENTRY) /* Must be non-empty with lists. */ |
030820d5 | 748 | duo_item->racl.mask_obj = (computed_mask_bits | duo_item->racl.group_obj) & ~NO_ENTRY; |
5b934f51 | 749 | #endif |
1c3344a1 WD |
750 | |
751 | duo_item->sacl = NULL; | |
752 | ||
753 | return ndx; | |
754 | } | |
755 | ||
756 | /* Receive the ACL info the sender has included for this file-list entry. */ | |
757 | void receive_acl(struct file_struct *file, int f) | |
758 | { | |
759 | F_ACL(file) = recv_rsync_acl(&access_acl_list, SMB_ACL_TYPE_ACCESS, f); | |
760 | ||
761 | if (S_ISDIR(file->mode)) | |
e434f0eb | 762 | F_DIR_DEFACL(file) = recv_rsync_acl(&default_acl_list, SMB_ACL_TYPE_DEFAULT, f); |
1c3344a1 WD |
763 | } |
764 | ||
765 | static int cache_rsync_acl(rsync_acl *racl, SMB_ACL_TYPE_T type, item_list *racl_list) | |
766 | { | |
767 | int ndx; | |
768 | ||
769 | if (!racl) | |
770 | ndx = -1; | |
771 | else if ((ndx = find_matching_rsync_acl(racl, type, racl_list)) == -1) { | |
772 | acl_duo *new_duo; | |
773 | ndx = racl_list->count; | |
774 | new_duo = EXPAND_ITEM_LIST(racl_list, acl_duo, 1000); | |
775 | new_duo->racl = *racl; | |
776 | new_duo->sacl = NULL; | |
777 | *racl = empty_rsync_acl; | |
778 | } | |
779 | ||
780 | return ndx; | |
781 | } | |
782 | ||
13710874 | 783 | /* Turn the ACL data in stat_x into cached ACL data, setting the index |
1c3344a1 | 784 | * values in the file struct. */ |
13710874 | 785 | void cache_acl(struct file_struct *file, stat_x *sxp) |
1c3344a1 WD |
786 | { |
787 | F_ACL(file) = cache_rsync_acl(sxp->acc_acl, | |
788 | SMB_ACL_TYPE_ACCESS, &access_acl_list); | |
789 | ||
790 | if (S_ISDIR(sxp->st.st_mode)) { | |
e434f0eb | 791 | F_DIR_DEFACL(file) = cache_rsync_acl(sxp->def_acl, |
1c3344a1 WD |
792 | SMB_ACL_TYPE_DEFAULT, &default_acl_list); |
793 | } | |
794 | } | |
795 | ||
5b934f51 | 796 | #ifndef HAVE_OSX_ACLS |
1c3344a1 WD |
797 | static mode_t change_sacl_perms(SMB_ACL_T sacl, rsync_acl *racl, mode_t old_mode, mode_t mode) |
798 | { | |
799 | SMB_ACL_ENTRY_T entry; | |
800 | const char *errfun; | |
801 | int rc; | |
802 | ||
803 | if (S_ISDIR(mode)) { | |
804 | /* If the sticky bit is going on, it's not safe to allow all | |
805 | * the new ACL to go into effect before it gets set. */ | |
806 | #ifdef SMB_ACL_LOSES_SPECIAL_MODE_BITS | |
807 | if (mode & S_ISVTX) | |
808 | mode &= ~0077; | |
809 | #else | |
810 | if (mode & S_ISVTX && !(old_mode & S_ISVTX)) | |
811 | mode &= ~0077; | |
812 | } else { | |
813 | /* If setuid or setgid is going off, it's not safe to allow all | |
814 | * the new ACL to go into effect before they get cleared. */ | |
815 | if ((old_mode & S_ISUID && !(mode & S_ISUID)) | |
816 | || (old_mode & S_ISGID && !(mode & S_ISGID))) | |
817 | mode &= ~0077; | |
818 | #endif | |
819 | } | |
820 | ||
821 | errfun = "sys_acl_get_entry"; | |
822 | for (rc = sys_acl_get_entry(sacl, SMB_ACL_FIRST_ENTRY, &entry); | |
823 | rc == 1; | |
824 | rc = sys_acl_get_entry(sacl, SMB_ACL_NEXT_ENTRY, &entry)) { | |
825 | SMB_ACL_TAG_T tag_type; | |
030820d5 | 826 | if ((rc = sys_acl_get_tag_type(entry, &tag_type)) != 0) { |
1c3344a1 WD |
827 | errfun = "sys_acl_get_tag_type"; |
828 | break; | |
829 | } | |
830 | switch (tag_type) { | |
831 | case SMB_ACL_USER_OBJ: | |
832 | COE2( store_access_in_entry,((mode >> 6) & 7, entry) ); | |
833 | break; | |
834 | case SMB_ACL_GROUP_OBJ: | |
835 | /* group is only empty when identical to group perms. */ | |
836 | if (racl->group_obj != NO_ENTRY) | |
837 | break; | |
838 | COE2( store_access_in_entry,((mode >> 3) & 7, entry) ); | |
839 | break; | |
840 | case SMB_ACL_MASK: | |
841 | #ifndef ACLS_NEED_MASK | |
842 | /* mask is only empty when we don't need it. */ | |
843 | if (racl->mask_obj == NO_ENTRY) | |
844 | break; | |
845 | #endif | |
846 | COE2( store_access_in_entry,((mode >> 3) & 7, entry) ); | |
847 | break; | |
848 | case SMB_ACL_OTHER: | |
849 | COE2( store_access_in_entry,(mode & 7, entry) ); | |
850 | break; | |
851 | } | |
852 | } | |
853 | if (rc) { | |
854 | error_exit: | |
855 | if (errfun) { | |
856 | rsyserr(FERROR, errno, "change_sacl_perms: %s()", | |
857 | errfun); | |
858 | } | |
859 | return (mode_t)~0; | |
860 | } | |
861 | ||
862 | #ifdef SMB_ACL_LOSES_SPECIAL_MODE_BITS | |
863 | /* Ensure that chmod() will be called to restore any lost setid bits. */ | |
864 | if (old_mode & (S_ISUID | S_ISGID | S_ISVTX) | |
865 | && BITS_EQUAL(old_mode, mode, CHMOD_BITS)) | |
866 | old_mode &= ~(S_ISUID | S_ISGID | S_ISVTX); | |
867 | #endif | |
868 | ||
869 | /* Return the mode of the file on disk, as we will set them. */ | |
870 | return (old_mode & ~ACCESSPERMS) | (mode & ACCESSPERMS); | |
871 | } | |
5b934f51 | 872 | #endif |
1c3344a1 WD |
873 | |
874 | static int set_rsync_acl(const char *fname, acl_duo *duo_item, | |
13710874 | 875 | SMB_ACL_TYPE_T type, stat_x *sxp, mode_t mode) |
1c3344a1 WD |
876 | { |
877 | if (type == SMB_ACL_TYPE_DEFAULT | |
878 | && duo_item->racl.user_obj == NO_ENTRY) { | |
f57ab2f7 WD |
879 | int rc; |
880 | #ifdef SUPPORT_XATTRS | |
881 | /* --fake-super support: delete default ACL from xattrs. */ | |
882 | if (am_root < 0) | |
883 | rc = del_def_xattr_acl(fname); | |
884 | else | |
885 | #endif | |
886 | rc = sys_acl_delete_def_file(fname); | |
887 | if (rc < 0) { | |
1c3344a1 WD |
888 | rsyserr(FERROR, errno, "set_acl: sys_acl_delete_def_file(%s)", |
889 | fname); | |
890 | return -1; | |
891 | } | |
f57ab2f7 WD |
892 | #ifdef SUPPORT_XATTRS |
893 | } else if (am_root < 0) { | |
894 | /* --fake-super support: store ACLs in an xattr. */ | |
895 | int cnt = duo_item->racl.names.count; | |
896 | size_t len = 4*4 + cnt * (4+4); | |
897 | char *buf = new_array(char, len); | |
898 | int rc; | |
899 | ||
900 | SIVAL(buf, 0, duo_item->racl.user_obj); | |
901 | SIVAL(buf, 4, duo_item->racl.group_obj); | |
902 | SIVAL(buf, 8, duo_item->racl.mask_obj); | |
903 | SIVAL(buf, 12, duo_item->racl.other_obj); | |
904 | ||
905 | if (cnt) { | |
906 | char *bp = buf + 4*4; | |
907 | id_access *ida = duo_item->racl.names.idas; | |
908 | for ( ; cnt--; ida++, bp += 4+4) { | |
909 | SIVAL(bp, 0, ida->id); | |
910 | SIVAL(bp, 4, ida->access); | |
911 | } | |
912 | } | |
913 | rc = set_xattr_acl(fname, type == SMB_ACL_TYPE_ACCESS, buf, len); | |
914 | free(buf); | |
915 | return rc; | |
916 | #endif | |
1c3344a1 WD |
917 | } else { |
918 | mode_t cur_mode = sxp->st.st_mode; | |
919 | if (!duo_item->sacl | |
920 | && !pack_smb_acl(&duo_item->sacl, &duo_item->racl)) | |
921 | return -1; | |
5b934f51 WD |
922 | #ifdef HAVE_OSX_ACLS |
923 | mode = 0; /* eliminate compiler warning */ | |
924 | #else | |
1c3344a1 WD |
925 | if (type == SMB_ACL_TYPE_ACCESS) { |
926 | cur_mode = change_sacl_perms(duo_item->sacl, &duo_item->racl, | |
927 | cur_mode, mode); | |
928 | if (cur_mode == (mode_t)~0) | |
929 | return 0; | |
930 | } | |
5b934f51 | 931 | #endif |
1c3344a1 WD |
932 | if (sys_acl_set_file(fname, type, duo_item->sacl) < 0) { |
933 | rsyserr(FERROR, errno, "set_acl: sys_acl_set_file(%s, %s)", | |
934 | fname, str_acl_type(type)); | |
935 | return -1; | |
936 | } | |
937 | if (type == SMB_ACL_TYPE_ACCESS) | |
938 | sxp->st.st_mode = cur_mode; | |
939 | } | |
940 | ||
941 | return 0; | |
942 | } | |
943 | ||
944 | /* Set ACL on indicated filename. | |
945 | * | |
946 | * This sets extended access ACL entries and default ACL. If convenient, | |
947 | * it sets permission bits along with the access ACL and signals having | |
948 | * done so by modifying sxp->st.st_mode. | |
949 | * | |
950 | * Returns 1 for unchanged, 0 for changed, -1 for failed. Call this | |
951 | * with fname set to NULL to just check if the ACL is unchanged. */ | |
13710874 | 952 | int set_acl(const char *fname, const struct file_struct *file, stat_x *sxp) |
1c3344a1 WD |
953 | { |
954 | int unchanged = 1; | |
955 | int32 ndx; | |
956 | BOOL eq; | |
957 | ||
958 | if (!dry_run && (read_only || list_only)) { | |
959 | errno = EROFS; | |
960 | return -1; | |
961 | } | |
962 | ||
963 | ndx = F_ACL(file); | |
964 | if (ndx >= 0 && (size_t)ndx < access_acl_list.count) { | |
965 | acl_duo *duo_item = access_acl_list.items; | |
966 | duo_item += ndx; | |
967 | eq = sxp->acc_acl | |
968 | && rsync_acl_equal_enough(sxp->acc_acl, &duo_item->racl, file->mode); | |
969 | if (!eq) { | |
970 | unchanged = 0; | |
971 | if (!dry_run && fname | |
972 | && set_rsync_acl(fname, duo_item, SMB_ACL_TYPE_ACCESS, | |
973 | sxp, file->mode) < 0) | |
974 | unchanged = -1; | |
975 | } | |
976 | } | |
977 | ||
978 | if (!S_ISDIR(sxp->st.st_mode)) | |
979 | return unchanged; | |
980 | ||
e434f0eb | 981 | ndx = F_DIR_DEFACL(file); |
1c3344a1 WD |
982 | if (ndx >= 0 && (size_t)ndx < default_acl_list.count) { |
983 | acl_duo *duo_item = default_acl_list.items; | |
984 | duo_item += ndx; | |
985 | eq = sxp->def_acl && rsync_acl_equal(sxp->def_acl, &duo_item->racl); | |
986 | if (!eq) { | |
987 | if (unchanged > 0) | |
988 | unchanged = 0; | |
989 | if (!dry_run && fname | |
990 | && set_rsync_acl(fname, duo_item, SMB_ACL_TYPE_DEFAULT, | |
991 | sxp, file->mode) < 0) | |
992 | unchanged = -1; | |
993 | } | |
994 | } | |
995 | ||
996 | return unchanged; | |
997 | } | |
998 | ||
33233b49 WD |
999 | /* Non-incremental recursion needs to convert all the received IDs. |
1000 | * This is done in a single pass after receiving the whole file-list. */ | |
a217c453 | 1001 | static void match_racl_ids(const item_list *racl_list) |
1c3344a1 | 1002 | { |
a217c453 WD |
1003 | int list_cnt, name_cnt; |
1004 | acl_duo *duo_item = racl_list->items; | |
1005 | for (list_cnt = racl_list->count; list_cnt--; duo_item++) { | |
030820d5 | 1006 | ida_entries *idal = &duo_item->racl.names; |
33233b49 | 1007 | id_access *ida = idal->idas; |
030820d5 WD |
1008 | for (name_cnt = idal->count; name_cnt--; ida++) { |
1009 | if (ida->access & NAME_IS_USER) | |
1010 | ida->id = match_uid(ida->id); | |
1011 | else | |
1012 | ida->id = match_gid(ida->id, NULL); | |
1013 | } | |
1c3344a1 | 1014 | } |
1c3344a1 WD |
1015 | } |
1016 | ||
a217c453 | 1017 | void match_acl_ids(void) |
1c3344a1 | 1018 | { |
a217c453 WD |
1019 | match_racl_ids(&access_acl_list); |
1020 | match_racl_ids(&default_acl_list); | |
1c3344a1 WD |
1021 | } |
1022 | ||
1023 | /* This is used by dest_mode(). */ | |
1024 | int default_perms_for_dir(const char *dir) | |
1025 | { | |
1026 | rsync_acl racl; | |
1027 | SMB_ACL_T sacl; | |
1028 | BOOL ok; | |
1029 | int perms; | |
1030 | ||
1031 | if (dir == NULL) | |
1032 | dir = "."; | |
1033 | perms = ACCESSPERMS & ~orig_umask; | |
1034 | /* Read the directory's default ACL. If it has none, this will successfully return an empty ACL. */ | |
1035 | sacl = sys_acl_get_file(dir, SMB_ACL_TYPE_DEFAULT); | |
1036 | if (sacl == NULL) { | |
1037 | /* Couldn't get an ACL. Darn. */ | |
1038 | switch (errno) { | |
d4a013ed | 1039 | #ifdef ENOTSUP |
1c3344a1 | 1040 | case ENOTSUP: |
d4a013ed | 1041 | #endif |
1c3344a1 WD |
1042 | case ENOSYS: |
1043 | /* No ACLs are available. */ | |
1044 | break; | |
1045 | case ENOENT: | |
1046 | if (dry_run) { | |
1047 | /* We're doing a dry run, so the containing directory | |
1048 | * wasn't actually created. Don't worry about it. */ | |
1049 | break; | |
1050 | } | |
1051 | /* Otherwise fall through. */ | |
1052 | default: | |
1053 | rprintf(FERROR, "default_perms_for_dir: sys_acl_get_file(%s, %s): %s, falling back on umask\n", | |
1054 | dir, str_acl_type(SMB_ACL_TYPE_DEFAULT), strerror(errno)); | |
1055 | } | |
1056 | return perms; | |
1057 | } | |
1058 | ||
1059 | /* Convert it. */ | |
1060 | racl = empty_rsync_acl; | |
1061 | ok = unpack_smb_acl(sacl, &racl); | |
1062 | sys_acl_free_acl(sacl); | |
1063 | if (!ok) { | |
1064 | rprintf(FERROR, "default_perms_for_dir: unpack_smb_acl failed, falling back on umask\n"); | |
1065 | return perms; | |
1066 | } | |
1067 | ||
1068 | /* Apply the permission-bit entries of the default ACL, if any. */ | |
1069 | if (racl.user_obj != NO_ENTRY) { | |
1070 | perms = rsync_acl_get_perms(&racl); | |
1071 | if (verbose > 2) | |
1072 | rprintf(FINFO, "got ACL-based default perms %o for directory %s\n", perms, dir); | |
1073 | } | |
1074 | ||
1075 | rsync_acl_free(&racl); | |
1076 | return perms; | |
1077 | } | |
1078 | ||
1079 | #endif /* SUPPORT_ACLS */ |