Commit | Line | Data |
---|---|---|
16edf865 WD |
1 | /* |
2 | * Extended Attribute support for rsync. | |
3 | * Written by Jay Fenlason, vaguely based on the ACLs patch. | |
4 | * | |
5 | * Copyright (C) 2004 Red Hat, Inc. | |
d3d07a5e | 6 | * Copyright (C) 2006-2008 Wayne Davison |
16edf865 WD |
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. | |
16edf865 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. |
16edf865 WD |
20 | */ |
21 | ||
22 | #include "rsync.h" | |
1b42f628 | 23 | #include "ifuncs.h" |
16edf865 WD |
24 | #include "lib/sysxattrs.h" |
25 | ||
26 | #ifdef SUPPORT_XATTRS | |
27 | ||
28 | extern int dry_run; | |
29 | extern int am_root; | |
30 | extern int am_sender; | |
31 | extern int am_generator; | |
32 | extern int read_only; | |
33 | extern int list_only; | |
524eaa82 | 34 | extern int preserve_xattrs; |
16edf865 WD |
35 | extern int checksum_seed; |
36 | ||
37 | #define RSYNC_XAL_INITIAL 5 | |
38 | #define RSYNC_XAL_LIST_INITIAL 100 | |
39 | ||
40 | #define MAX_FULL_DATUM 32 | |
41 | ||
42 | #define HAS_PREFIX(str, prfx) (*(str) == *(prfx) \ | |
43 | && strncmp(str, prfx, sizeof (prfx) - 1) == 0) | |
44 | ||
45 | #define XATTR_ABBREV(x) ((size_t)((x).name - (x).datum) < (x).datum_len) | |
46 | ||
47 | #define XSTATE_ABBREV 0 | |
48 | #define XSTATE_DONE 1 | |
49 | #define XSTATE_TODO 2 | |
16edf865 WD |
50 | |
51 | #define USER_PREFIX "user." | |
52 | #define UPRE_LEN ((int)sizeof USER_PREFIX - 1) | |
53 | #define SYSTEM_PREFIX "system." | |
54 | #define SPRE_LEN ((int)sizeof SYSTEM_PREFIX - 1) | |
55 | ||
56 | #ifdef HAVE_LINUX_XATTRS | |
9439c0cb WD |
57 | #define MIGHT_NEED_RPRE (am_root < 0) |
58 | #define RSYNC_PREFIX USER_PREFIX "rsync." | |
16edf865 | 59 | #else |
9439c0cb | 60 | #define MIGHT_NEED_RPRE am_root |
16edf865 | 61 | #define RSYNC_PREFIX "rsync." |
16edf865 | 62 | #endif |
9439c0cb WD |
63 | #define RPRE_LEN ((int)sizeof RSYNC_PREFIX - 1) |
64 | ||
d724dd18 WD |
65 | #define XSTAT_SUFFIX "stat" |
66 | #define XSTAT_ATTR RSYNC_PREFIX "%" XSTAT_SUFFIX | |
67 | #define XACC_ACL_SUFFIX "aacl" | |
68 | #define XACC_ACL_ATTR RSYNC_PREFIX "%" XACC_ACL_SUFFIX | |
69 | #define XDEF_ACL_SUFFIX "dacl" | |
70 | #define XDEF_ACL_ATTR RSYNC_PREFIX "%" XDEF_ACL_SUFFIX | |
16edf865 WD |
71 | |
72 | typedef struct { | |
73 | char *datum, *name; | |
74 | size_t datum_len, name_len; | |
68ddbaf6 | 75 | int num; |
16edf865 WD |
76 | } rsync_xa; |
77 | ||
78 | static size_t namebuf_len = 0; | |
79 | static char *namebuf = NULL; | |
80 | ||
81 | static item_list empty_xattr = EMPTY_ITEM_LIST; | |
82 | static item_list rsync_xal_l = EMPTY_ITEM_LIST; | |
83 | ||
84 | /* ------------------------------------------------------------------------- */ | |
85 | ||
86 | static void rsync_xal_free(item_list *xalp) | |
87 | { | |
88 | size_t i; | |
89 | rsync_xa *rxas = xalp->items; | |
90 | ||
91 | for (i = 0; i < xalp->count; i++) { | |
92 | free(rxas[i].datum); | |
93 | /*free(rxas[i].name);*/ | |
94 | } | |
95 | xalp->count = 0; | |
96 | } | |
97 | ||
13710874 | 98 | void free_xattr(stat_x *sxp) |
16edf865 WD |
99 | { |
100 | if (!sxp->xattr) | |
101 | return; | |
102 | rsync_xal_free(sxp->xattr); | |
103 | free(sxp->xattr); | |
104 | sxp->xattr = NULL; | |
105 | } | |
106 | ||
107 | static int rsync_xal_compare_names(const void *x1, const void *x2) | |
108 | { | |
109 | const rsync_xa *xa1 = x1; | |
110 | const rsync_xa *xa2 = x2; | |
111 | return strcmp(xa1->name, xa2->name); | |
112 | } | |
113 | ||
114 | static ssize_t get_xattr_names(const char *fname) | |
115 | { | |
116 | ssize_t list_len; | |
71daa07f | 117 | double arg; |
16edf865 WD |
118 | |
119 | if (!namebuf) { | |
120 | namebuf_len = 1024; | |
121 | namebuf = new_array(char, namebuf_len); | |
122 | if (!namebuf) | |
123 | out_of_memory("get_xattr_names"); | |
124 | } | |
125 | ||
71daa07f WD |
126 | while (1) { |
127 | /* The length returned includes all the '\0' terminators. */ | |
128 | list_len = sys_llistxattr(fname, namebuf, namebuf_len); | |
129 | if (list_len >= 0) { | |
130 | if ((size_t)list_len <= namebuf_len) | |
131 | break; | |
132 | } else if (errno == ENOTSUP) | |
133 | return 0; | |
134 | else if (errno != ERANGE) { | |
135 | arg = (double)namebuf_len; | |
136 | got_error: | |
3f0211b6 | 137 | rsyserr(FERROR_XFER, errno, |
71daa07f WD |
138 | "get_xattr_names: llistxattr(\"%s\",%.0f) failed", |
139 | fname, arg); | |
16edf865 WD |
140 | return -1; |
141 | } | |
71daa07f WD |
142 | list_len = sys_llistxattr(fname, NULL, 0); |
143 | if (list_len < 0) { | |
144 | arg = 0; | |
145 | goto got_error; | |
146 | } | |
16edf865 WD |
147 | if (namebuf_len) |
148 | free(namebuf); | |
149 | namebuf_len = list_len + 1024; | |
150 | namebuf = new_array(char, namebuf_len); | |
151 | if (!namebuf) | |
152 | out_of_memory("get_xattr_names"); | |
16edf865 WD |
153 | } |
154 | ||
71daa07f | 155 | return list_len; |
16edf865 WD |
156 | } |
157 | ||
158 | /* On entry, the *len_ptr parameter contains the size of the extra space we | |
159 | * should allocate when we create a buffer for the data. On exit, it contains | |
160 | * the length of the datum. */ | |
161 | static char *get_xattr_data(const char *fname, const char *name, size_t *len_ptr, | |
162 | int no_missing_error) | |
163 | { | |
164 | size_t datum_len = sys_lgetxattr(fname, name, NULL, 0); | |
41979f25 | 165 | size_t extra_len = *len_ptr; |
16edf865 WD |
166 | char *ptr; |
167 | ||
41979f25 WD |
168 | *len_ptr = datum_len; |
169 | ||
16edf865 WD |
170 | if (datum_len == (size_t)-1) { |
171 | if (errno == ENOTSUP || no_missing_error) | |
172 | return NULL; | |
3f0211b6 | 173 | rsyserr(FERROR_XFER, errno, |
16edf865 WD |
174 | "get_xattr_data: lgetxattr(\"%s\",\"%s\",0) failed", |
175 | fname, name); | |
176 | return NULL; | |
177 | } | |
178 | ||
41979f25 WD |
179 | if (!datum_len && !extra_len) |
180 | extra_len = 1; /* request non-zero amount of memory */ | |
774d1c36 WD |
181 | if (datum_len + extra_len < datum_len) |
182 | overflow_exit("get_xattr_data"); | |
183 | if (!(ptr = new_array(char, datum_len + extra_len))) | |
16edf865 WD |
184 | out_of_memory("get_xattr_data"); |
185 | ||
16edf865 WD |
186 | if (datum_len) { |
187 | size_t len = sys_lgetxattr(fname, name, ptr, datum_len); | |
188 | if (len != datum_len) { | |
189 | if (len == (size_t)-1) { | |
3f0211b6 | 190 | rsyserr(FERROR_XFER, errno, |
16edf865 WD |
191 | "get_xattr_data: lgetxattr(\"%s\",\"%s\",%ld)" |
192 | " failed", fname, name, (long)datum_len); | |
193 | } else { | |
3f0211b6 | 194 | rprintf(FERROR_XFER, |
16edf865 WD |
195 | "get_xattr_data: lgetxattr(\"%s\",\"%s\",%ld)" |
196 | " returned %ld\n", fname, name, | |
197 | (long)datum_len, (long)len); | |
198 | } | |
199 | free(ptr); | |
200 | return NULL; | |
201 | } | |
202 | } | |
203 | ||
204 | return ptr; | |
205 | } | |
206 | ||
207 | static int rsync_xal_get(const char *fname, item_list *xalp) | |
208 | { | |
209 | ssize_t list_len, name_len; | |
210 | size_t datum_len, name_offset; | |
211 | char *name, *ptr; | |
212 | #ifdef HAVE_LINUX_XATTRS | |
213 | int user_only = am_sender ? 0 : !am_root; | |
214 | #endif | |
68ddbaf6 WD |
215 | rsync_xa *rxa; |
216 | int count; | |
16edf865 WD |
217 | |
218 | /* This puts the name list into the "namebuf" buffer. */ | |
219 | if ((list_len = get_xattr_names(fname)) < 0) | |
220 | return -1; | |
221 | ||
222 | for (name = namebuf; list_len > 0; name += name_len) { | |
16edf865 WD |
223 | name_len = strlen(name) + 1; |
224 | list_len -= name_len; | |
225 | ||
226 | #ifdef HAVE_LINUX_XATTRS | |
227 | /* We always ignore the system namespace, and non-root | |
228 | * ignores everything but the user namespace. */ | |
229 | if (user_only ? !HAS_PREFIX(name, USER_PREFIX) | |
230 | : HAS_PREFIX(name, SYSTEM_PREFIX)) | |
231 | continue; | |
232 | #endif | |
233 | ||
524eaa82 | 234 | /* No rsync.%FOO attributes are copied w/o 2 -X options. */ |
a685271d WD |
235 | if (name_len > RPRE_LEN && name[RPRE_LEN] == '%' |
236 | && HAS_PREFIX(name, RSYNC_PREFIX)) { | |
237 | if ((am_sender && preserve_xattrs < 2) | |
d724dd18 WD |
238 | || (am_root < 0 |
239 | && (strcmp(name+RPRE_LEN+1, XSTAT_SUFFIX) == 0 | |
240 | || strcmp(name+RPRE_LEN+1, XACC_ACL_SUFFIX) == 0 | |
241 | || strcmp(name+RPRE_LEN+1, XDEF_ACL_SUFFIX) == 0))) | |
a685271d WD |
242 | continue; |
243 | } | |
9439c0cb | 244 | |
16edf865 WD |
245 | datum_len = name_len; /* Pass extra size to get_xattr_data() */ |
246 | if (!(ptr = get_xattr_data(fname, name, &datum_len, 0))) | |
247 | return -1; | |
248 | ||
249 | if (datum_len > MAX_FULL_DATUM) { | |
250 | /* For large datums, we store a flag and a checksum. */ | |
251 | name_offset = 1 + MAX_DIGEST_LEN; | |
252 | sum_init(checksum_seed); | |
253 | sum_update(ptr, datum_len); | |
254 | free(ptr); | |
255 | ||
256 | if (!(ptr = new_array(char, name_offset + name_len))) | |
257 | out_of_memory("rsync_xal_get"); | |
258 | *ptr = XSTATE_ABBREV; | |
259 | sum_end(ptr + 1); | |
260 | } else | |
261 | name_offset = datum_len; | |
262 | ||
a685271d WD |
263 | rxa = EXPAND_ITEM_LIST(xalp, rsync_xa, RSYNC_XAL_INITIAL); |
264 | rxa->name = ptr + name_offset; | |
265 | memcpy(rxa->name, name, name_len); | |
266 | rxa->datum = ptr; | |
267 | rxa->name_len = name_len; | |
268 | rxa->datum_len = datum_len; | |
16edf865 | 269 | } |
68ddbaf6 WD |
270 | count = xalp->count; |
271 | rxa = xalp->items; | |
272 | if (count > 1) | |
273 | qsort(rxa, count, sizeof (rsync_xa), rsync_xal_compare_names); | |
274 | for (rxa += count-1; count; count--, rxa--) | |
275 | rxa->num = count; | |
16edf865 WD |
276 | return 0; |
277 | } | |
278 | ||
279 | /* Read the xattr(s) for this filename. */ | |
13710874 | 280 | int get_xattr(const char *fname, stat_x *sxp) |
16edf865 WD |
281 | { |
282 | sxp->xattr = new(item_list); | |
283 | *sxp->xattr = empty_xattr; | |
284 | if (rsync_xal_get(fname, sxp->xattr) < 0) { | |
285 | free_xattr(sxp); | |
286 | return -1; | |
287 | } | |
288 | return 0; | |
289 | } | |
290 | ||
e9489cd6 WD |
291 | int copy_xattrs(const char *source, const char *dest) |
292 | { | |
293 | ssize_t list_len, name_len; | |
294 | size_t datum_len; | |
295 | char *name, *ptr; | |
296 | #ifdef HAVE_LINUX_XATTRS | |
297 | int user_only = am_sender ? 0 : !am_root; | |
298 | #endif | |
299 | ||
300 | /* This puts the name list into the "namebuf" buffer. */ | |
301 | if ((list_len = get_xattr_names(source)) < 0) | |
302 | return -1; | |
303 | ||
304 | for (name = namebuf; list_len > 0; name += name_len) { | |
305 | name_len = strlen(name) + 1; | |
306 | list_len -= name_len; | |
307 | ||
308 | #ifdef HAVE_LINUX_XATTRS | |
309 | /* We always ignore the system namespace, and non-root | |
310 | * ignores everything but the user namespace. */ | |
311 | if (user_only ? !HAS_PREFIX(name, USER_PREFIX) | |
312 | : HAS_PREFIX(name, SYSTEM_PREFIX)) | |
313 | continue; | |
314 | #endif | |
315 | ||
316 | datum_len = 0; | |
317 | if (!(ptr = get_xattr_data(source, name, &datum_len, 0))) | |
318 | return -1; | |
319 | if (sys_lsetxattr(dest, name, ptr, datum_len) < 0) { | |
320 | int save_errno = errno ? errno : EINVAL; | |
321 | rsyserr(FERROR_XFER, errno, | |
322 | "rsync_xal_set: lsetxattr(\"%s\",\"%s\") failed", | |
323 | dest, name); | |
324 | errno = save_errno; | |
325 | return -1; | |
326 | } | |
327 | free(ptr); | |
328 | } | |
329 | ||
330 | return 0; | |
331 | } | |
332 | ||
16edf865 WD |
333 | static int find_matching_xattr(item_list *xalp) |
334 | { | |
335 | size_t i, j; | |
336 | item_list *lst = rsync_xal_l.items; | |
337 | ||
338 | for (i = 0; i < rsync_xal_l.count; i++) { | |
339 | rsync_xa *rxas1 = lst[i].items; | |
340 | rsync_xa *rxas2 = xalp->items; | |
341 | ||
342 | /* Wrong number of elements? */ | |
343 | if (lst[i].count != xalp->count) | |
344 | continue; | |
345 | /* any elements different? */ | |
346 | for (j = 0; j < xalp->count; j++) { | |
347 | if (rxas1[j].name_len != rxas2[j].name_len | |
348 | || rxas1[j].datum_len != rxas2[j].datum_len | |
349 | || strcmp(rxas1[j].name, rxas2[j].name)) | |
350 | break; | |
351 | if (rxas1[j].datum_len > MAX_FULL_DATUM) { | |
352 | if (memcmp(rxas1[j].datum + 1, | |
353 | rxas2[j].datum + 1, | |
354 | MAX_DIGEST_LEN) != 0) | |
355 | break; | |
356 | } else { | |
357 | if (memcmp(rxas1[j].datum, rxas2[j].datum, | |
358 | rxas2[j].datum_len)) | |
359 | break; | |
360 | } | |
361 | } | |
362 | /* no differences found. This is The One! */ | |
363 | if (j == xalp->count) | |
364 | return i; | |
365 | } | |
366 | ||
367 | return -1; | |
368 | } | |
369 | ||
370 | /* Store *xalp on the end of rsync_xal_l */ | |
371 | static void rsync_xal_store(item_list *xalp) | |
372 | { | |
373 | item_list *new_lst = EXPAND_ITEM_LIST(&rsync_xal_l, item_list, RSYNC_XAL_LIST_INITIAL); | |
374 | /* Since the following call starts a new list, we know it will hold the | |
375 | * entire initial-count, not just enough space for one new item. */ | |
376 | *new_lst = empty_xattr; | |
377 | (void)EXPAND_ITEM_LIST(new_lst, rsync_xa, xalp->count); | |
378 | memcpy(new_lst->items, xalp->items, xalp->count * sizeof (rsync_xa)); | |
379 | new_lst->count = xalp->count; | |
380 | xalp->count = 0; | |
381 | } | |
382 | ||
383 | /* Send the make_xattr()-generated xattr list for this flist entry. */ | |
13710874 | 384 | int send_xattr(stat_x *sxp, int f) |
16edf865 WD |
385 | { |
386 | int ndx = find_matching_xattr(sxp->xattr); | |
387 | ||
388 | /* Send 0 (-1 + 1) to indicate that literal xattr data follows. */ | |
f31514ad | 389 | write_varint(f, ndx + 1); |
16edf865 WD |
390 | |
391 | if (ndx < 0) { | |
392 | rsync_xa *rxa; | |
393 | int count = sxp->xattr->count; | |
f31514ad | 394 | write_varint(f, count); |
16edf865 | 395 | for (rxa = sxp->xattr->items; count--; rxa++) { |
b4e6aac9 | 396 | size_t name_len = rxa->name_len; |
d724dd18 WD |
397 | const char *name = rxa->name; |
398 | /* Strip the rsync prefix from disguised namespaces. */ | |
b4e6aac9 | 399 | if (name_len > RPRE_LEN |
16edf865 | 400 | #ifdef HAVE_LINUX_XATTRS |
b4e6aac9 | 401 | && am_root < 0 |
d724dd18 | 402 | #endif |
b4e6aac9 | 403 | && name[RPRE_LEN] != '%' && HAS_PREFIX(name, RSYNC_PREFIX)) { |
d724dd18 WD |
404 | name += RPRE_LEN; |
405 | name_len -= RPRE_LEN; | |
406 | } | |
407 | #ifndef HAVE_LINUX_XATTRS | |
408 | else { | |
409 | /* Put everything else in the user namespace. */ | |
410 | name_len += UPRE_LEN; | |
411 | } | |
412 | #endif | |
413 | write_varint(f, name_len); | |
f31514ad | 414 | write_varint(f, rxa->datum_len); |
d724dd18 WD |
415 | #ifndef HAVE_LINUX_XATTRS |
416 | if (name_len > rxa->name_len) { | |
16edf865 | 417 | write_buf(f, USER_PREFIX, UPRE_LEN); |
d724dd18 | 418 | name_len -= UPRE_LEN; |
16edf865 WD |
419 | } |
420 | #endif | |
d724dd18 | 421 | write_buf(f, name, name_len); |
16edf865 WD |
422 | if (rxa->datum_len > MAX_FULL_DATUM) |
423 | write_buf(f, rxa->datum + 1, MAX_DIGEST_LEN); | |
424 | else | |
425 | write_buf(f, rxa->datum, rxa->datum_len); | |
426 | } | |
427 | ndx = rsync_xal_l.count; /* pre-incremented count */ | |
428 | rsync_xal_store(sxp->xattr); /* adds item to rsync_xal_l */ | |
429 | } | |
430 | ||
431 | return ndx; | |
432 | } | |
433 | ||
434 | /* Return a flag indicating if we need to change a file's xattrs. If | |
435 | * "find_all" is specified, also mark any abbreviated xattrs that we | |
436 | * need so that send_xattr_request() can tell the sender about them. */ | |
13710874 | 437 | int xattr_diff(struct file_struct *file, stat_x *sxp, int find_all) |
16edf865 WD |
438 | { |
439 | item_list *lst = rsync_xal_l.items; | |
440 | rsync_xa *snd_rxa, *rec_rxa; | |
441 | int snd_cnt, rec_cnt; | |
442 | int cmp, same, xattrs_equal = 1; | |
443 | ||
444 | if (sxp && XATTR_READY(*sxp)) { | |
445 | rec_rxa = sxp->xattr->items; | |
446 | rec_cnt = sxp->xattr->count; | |
447 | } else { | |
448 | rec_rxa = NULL; | |
449 | rec_cnt = 0; | |
450 | } | |
451 | ||
452 | if (F_XATTR(file) >= 0) | |
453 | lst += F_XATTR(file); | |
454 | else | |
455 | lst = &empty_xattr; | |
456 | ||
457 | snd_rxa = lst->items; | |
458 | snd_cnt = lst->count; | |
459 | ||
460 | /* If the count of the sender's xattrs is different from our | |
461 | * (receiver's) xattrs, the lists are not the same. */ | |
462 | if (snd_cnt != rec_cnt) { | |
463 | if (!find_all) | |
464 | return 1; | |
465 | xattrs_equal = 0; | |
466 | } | |
467 | ||
468 | while (snd_cnt) { | |
469 | cmp = rec_cnt ? strcmp(snd_rxa->name, rec_rxa->name) : -1; | |
470 | if (cmp > 0) | |
471 | same = 0; | |
472 | else if (snd_rxa->datum_len > MAX_FULL_DATUM) { | |
473 | same = cmp == 0 && snd_rxa->datum_len == rec_rxa->datum_len | |
474 | && memcmp(snd_rxa->datum + 1, rec_rxa->datum + 1, | |
475 | MAX_DIGEST_LEN) == 0; | |
476 | /* Flag unrequested items that we need. */ | |
477 | if (!same && find_all && snd_rxa->datum[0] == XSTATE_ABBREV) | |
478 | snd_rxa->datum[0] = XSTATE_TODO; | |
479 | } else { | |
480 | same = cmp == 0 && snd_rxa->datum_len == rec_rxa->datum_len | |
481 | && memcmp(snd_rxa->datum, rec_rxa->datum, | |
482 | snd_rxa->datum_len) == 0; | |
483 | } | |
484 | if (!same) { | |
485 | if (!find_all) | |
486 | return 1; | |
487 | xattrs_equal = 0; | |
488 | } | |
489 | ||
490 | if (cmp <= 0) { | |
491 | snd_rxa++; | |
492 | snd_cnt--; | |
493 | } | |
494 | if (cmp >= 0) { | |
495 | rec_rxa++; | |
496 | rec_cnt--; | |
497 | } | |
498 | } | |
499 | ||
500 | if (rec_cnt) | |
501 | xattrs_equal = 0; | |
502 | ||
503 | return !xattrs_equal; | |
504 | } | |
505 | ||
7462c6ac WD |
506 | /* When called by the generator (with a NULL fname), this tells the sender |
507 | * all the abbreviated xattr values we need. When called by the sender | |
508 | * (with a non-NULL fname), we send all the extra xattr data it needs. | |
509 | * The generator may also call with f_out < 0 to just change all the | |
510 | * XSTATE_ABBREV states into XSTATE_DONE. */ | |
16edf865 WD |
511 | void send_xattr_request(const char *fname, struct file_struct *file, int f_out) |
512 | { | |
513 | item_list *lst = rsync_xal_l.items; | |
68ddbaf6 | 514 | int cnt, prior_req = 0; |
16edf865 WD |
515 | rsync_xa *rxa; |
516 | ||
517 | lst += F_XATTR(file); | |
68ddbaf6 | 518 | for (rxa = lst->items, cnt = lst->count; cnt--; rxa++) { |
16edf865 WD |
519 | if (rxa->datum_len <= MAX_FULL_DATUM) |
520 | continue; | |
521 | switch (rxa->datum[0]) { | |
b769ad6a WD |
522 | case XSTATE_ABBREV: |
523 | /* Items left abbreviated matched the sender's checksum, so | |
524 | * the receiver will cache the local data for future use. */ | |
525 | if (am_generator) | |
526 | rxa->datum[0] = XSTATE_DONE; | |
16edf865 WD |
527 | continue; |
528 | case XSTATE_TODO: | |
7462c6ac | 529 | assert(f_out >= 0); |
16edf865 WD |
530 | break; |
531 | default: | |
532 | continue; | |
533 | } | |
534 | ||
535 | /* Flag that we handled this abbreviated item. */ | |
536 | rxa->datum[0] = XSTATE_DONE; | |
537 | ||
68ddbaf6 WD |
538 | write_varint(f_out, rxa->num - prior_req); |
539 | prior_req = rxa->num; | |
16edf865 WD |
540 | |
541 | if (fname) { | |
542 | size_t len = 0; | |
543 | char *ptr; | |
544 | ||
545 | /* Re-read the long datum. */ | |
a685271d WD |
546 | if (!(ptr = get_xattr_data(fname, rxa->name, &len, 0))) { |
547 | rprintf(FERROR_XFER, "failed to re-read xattr %s for %s\n", rxa->name, fname); | |
548 | write_varint(f_out, 0); | |
16edf865 | 549 | continue; |
a685271d | 550 | } |
16edf865 | 551 | |
f31514ad | 552 | write_varint(f_out, len); /* length might have changed! */ |
16edf865 WD |
553 | write_buf(f_out, ptr, len); |
554 | free(ptr); | |
555 | } | |
556 | } | |
557 | ||
7462c6ac WD |
558 | if (f_out >= 0) |
559 | write_byte(f_out, 0); /* end the list */ | |
16edf865 WD |
560 | } |
561 | ||
16edf865 WD |
562 | /* When called by the sender, read the request from the generator and mark |
563 | * any needed xattrs with a flag that lets us know they need to be sent to | |
564 | * the receiver. When called by the receiver, reads the sent data and | |
565 | * stores it in place of its checksum. */ | |
e107b6b1 | 566 | int recv_xattr_request(struct file_struct *file, int f_in) |
16edf865 WD |
567 | { |
568 | item_list *lst = rsync_xal_l.items; | |
569 | char *old_datum, *name; | |
570 | rsync_xa *rxa; | |
68ddbaf6 | 571 | int rel_pos, cnt, num, got_xattr_data = 0; |
16edf865 WD |
572 | |
573 | if (F_XATTR(file) < 0) { | |
574 | rprintf(FERROR, "recv_xattr_request: internal data error!\n"); | |
575 | exit_cleanup(RERR_STREAMIO); | |
576 | } | |
577 | lst += F_XATTR(file); | |
578 | ||
579 | cnt = lst->count; | |
580 | rxa = lst->items; | |
68ddbaf6 | 581 | num = 0; |
f31514ad | 582 | while ((rel_pos = read_varint(f_in)) != 0) { |
68ddbaf6 WD |
583 | num += rel_pos; |
584 | while (cnt && rxa->num < num) { | |
585 | rxa++; | |
586 | cnt--; | |
587 | } | |
588 | if (!cnt || rxa->num != num) { | |
589 | rprintf(FERROR, "[%s] could not find xattr #%d for %s\n", | |
590 | who_am_i(), num, f_name(file, NULL)); | |
591 | exit_cleanup(RERR_STREAMIO); | |
592 | } | |
593 | if (rxa->datum_len <= MAX_FULL_DATUM || rxa->datum[0] != XSTATE_ABBREV) { | |
594 | rprintf(FERROR, "[%s] internal abbrev error!\n", who_am_i()); | |
16edf865 WD |
595 | exit_cleanup(RERR_STREAMIO); |
596 | } | |
597 | ||
598 | if (am_sender) { | |
599 | rxa->datum[0] = XSTATE_TODO; | |
600 | continue; | |
601 | } | |
602 | ||
603 | old_datum = rxa->datum; | |
f31514ad | 604 | rxa->datum_len = read_varint(f_in); |
16edf865 WD |
605 | |
606 | if (rxa->name_len + rxa->datum_len < rxa->name_len) | |
774d1c36 | 607 | overflow_exit("recv_xattr_request"); |
16edf865 WD |
608 | rxa->datum = new_array(char, rxa->datum_len + rxa->name_len); |
609 | if (!rxa->datum) | |
610 | out_of_memory("recv_xattr_request"); | |
611 | name = rxa->datum + rxa->datum_len; | |
612 | memcpy(name, rxa->name, rxa->name_len); | |
613 | rxa->name = name; | |
614 | free(old_datum); | |
615 | read_buf(f_in, rxa->datum, rxa->datum_len); | |
e107b6b1 | 616 | got_xattr_data = 1; |
16edf865 | 617 | } |
e107b6b1 WD |
618 | |
619 | return got_xattr_data; | |
16edf865 WD |
620 | } |
621 | ||
622 | /* ------------------------------------------------------------------------- */ | |
623 | ||
624 | /* receive and build the rsync_xattr_lists */ | |
625 | void receive_xattr(struct file_struct *file, int f) | |
626 | { | |
627 | static item_list temp_xattr = EMPTY_ITEM_LIST; | |
68ddbaf6 | 628 | int count, num; |
d724dd18 WD |
629 | #ifdef HAVE_LINUX_XATTRS |
630 | int need_sort = 0; | |
631 | #else | |
632 | int need_sort = 1; | |
633 | #endif | |
f31514ad | 634 | int ndx = read_varint(f); |
16edf865 WD |
635 | |
636 | if (ndx < 0 || (size_t)ndx > rsync_xal_l.count) { | |
637 | rprintf(FERROR, "receive_xattr: xa index %d out of" | |
638 | " range for %s\n", ndx, f_name(file, NULL)); | |
639 | exit_cleanup(RERR_STREAMIO); | |
640 | } | |
641 | ||
642 | if (ndx != 0) { | |
643 | F_XATTR(file) = ndx - 1; | |
644 | return; | |
645 | } | |
646 | ||
f31514ad | 647 | if ((count = read_varint(f)) != 0) { |
16edf865 WD |
648 | (void)EXPAND_ITEM_LIST(&temp_xattr, rsync_xa, count); |
649 | temp_xattr.count = 0; | |
650 | } | |
651 | ||
68ddbaf6 | 652 | for (num = 1; num <= count; num++) { |
16edf865 WD |
653 | char *ptr, *name; |
654 | rsync_xa *rxa; | |
f31514ad WD |
655 | size_t name_len = read_varint(f); |
656 | size_t datum_len = read_varint(f); | |
16edf865 | 657 | size_t dget_len = datum_len > MAX_FULL_DATUM ? 1 + MAX_DIGEST_LEN : datum_len; |
9439c0cb | 658 | size_t extra_len = MIGHT_NEED_RPRE ? RPRE_LEN : 0; |
774d1c36 WD |
659 | if ((dget_len + extra_len < dget_len) |
660 | || (dget_len + extra_len + name_len < dget_len)) | |
661 | overflow_exit("receive_xattr"); | |
16edf865 WD |
662 | ptr = new_array(char, dget_len + extra_len + name_len); |
663 | if (!ptr) | |
664 | out_of_memory("receive_xattr"); | |
665 | name = ptr + dget_len + extra_len; | |
666 | read_buf(f, name, name_len); | |
667 | if (dget_len == datum_len) | |
668 | read_buf(f, ptr, dget_len); | |
669 | else { | |
670 | *ptr = XSTATE_ABBREV; | |
671 | read_buf(f, ptr + 1, MAX_DIGEST_LEN); | |
672 | } | |
673 | #ifdef HAVE_LINUX_XATTRS | |
674 | /* Non-root can only save the user namespace. */ | |
68ddbaf6 WD |
675 | if (am_root <= 0 && !HAS_PREFIX(name, USER_PREFIX)) { |
676 | if (!am_root) { | |
677 | free(ptr); | |
678 | continue; | |
679 | } | |
680 | name -= RPRE_LEN; | |
681 | name_len += RPRE_LEN; | |
682 | memcpy(name, RSYNC_PREFIX, RPRE_LEN); | |
d724dd18 | 683 | need_sort = 1; |
16edf865 WD |
684 | } |
685 | #else | |
686 | /* This OS only has a user namespace, so we either | |
687 | * strip the user prefix, or we put a non-user | |
688 | * namespace inside our rsync hierarchy. */ | |
689 | if (HAS_PREFIX(name, USER_PREFIX)) { | |
690 | name += UPRE_LEN; | |
691 | name_len -= UPRE_LEN; | |
692 | } else if (am_root) { | |
693 | name -= RPRE_LEN; | |
694 | name_len += RPRE_LEN; | |
695 | memcpy(name, RSYNC_PREFIX, RPRE_LEN); | |
696 | } else { | |
697 | free(ptr); | |
698 | continue; | |
699 | } | |
700 | #endif | |
524eaa82 WD |
701 | /* No rsync.%FOO attributes are copied w/o 2 -X options. */ |
702 | if (preserve_xattrs < 2 && name_len > RPRE_LEN | |
703 | && name[RPRE_LEN] == '%' && HAS_PREFIX(name, RSYNC_PREFIX)) { | |
9439c0cb WD |
704 | free(ptr); |
705 | continue; | |
706 | } | |
16edf865 WD |
707 | rxa = EXPAND_ITEM_LIST(&temp_xattr, rsync_xa, 1); |
708 | rxa->name = name; | |
709 | rxa->datum = ptr; | |
710 | rxa->name_len = name_len; | |
711 | rxa->datum_len = datum_len; | |
68ddbaf6 | 712 | rxa->num = num; |
16edf865 WD |
713 | } |
714 | ||
d724dd18 WD |
715 | if (need_sort && count > 1) |
716 | qsort(temp_xattr.items, count, sizeof (rsync_xa), rsync_xal_compare_names); | |
717 | ||
16edf865 WD |
718 | ndx = rsync_xal_l.count; /* pre-incremented count */ |
719 | rsync_xal_store(&temp_xattr); /* adds item to rsync_xal_l */ | |
720 | ||
721 | F_XATTR(file) = ndx; | |
722 | } | |
723 | ||
13710874 | 724 | /* Turn the xattr data in stat_x into cached xattr data, setting the index |
16edf865 | 725 | * values in the file struct. */ |
13710874 | 726 | void cache_xattr(struct file_struct *file, stat_x *sxp) |
16edf865 WD |
727 | { |
728 | int ndx; | |
729 | ||
730 | if (!sxp->xattr) | |
731 | return; | |
732 | ||
733 | ndx = find_matching_xattr(sxp->xattr); | |
734 | if (ndx < 0) | |
735 | rsync_xal_store(sxp->xattr); /* adds item to rsync_xal_l */ | |
736 | ||
737 | F_XATTR(file) = ndx; | |
738 | } | |
739 | ||
740 | static int rsync_xal_set(const char *fname, item_list *xalp, | |
13710874 | 741 | const char *fnamecmp, stat_x *sxp) |
16edf865 WD |
742 | { |
743 | rsync_xa *rxas = xalp->items; | |
744 | ssize_t list_len; | |
745 | size_t i, len; | |
746 | char *name, *ptr, sum[MAX_DIGEST_LEN]; | |
b4e6aac9 WD |
747 | size_t name_len; |
748 | int ret = 0; | |
16edf865 WD |
749 | |
750 | /* This puts the current name list into the "namebuf" buffer. */ | |
751 | if ((list_len = get_xattr_names(fname)) < 0) | |
752 | return -1; | |
753 | ||
754 | for (i = 0; i < xalp->count; i++) { | |
755 | name = rxas[i].name; | |
756 | ||
757 | if (XATTR_ABBREV(rxas[i])) { | |
758 | /* See if the fnamecmp version is identical. */ | |
759 | len = name_len = rxas[i].name_len; | |
760 | if ((ptr = get_xattr_data(fnamecmp, name, &len, 1)) == NULL) { | |
761 | still_abbrev: | |
762 | if (am_generator) | |
763 | continue; | |
764 | rprintf(FERROR, "Missing abbreviated xattr value, %s, for %s\n", | |
765 | rxas[i].name, full_fname(fname)); | |
766 | ret = -1; | |
767 | continue; | |
768 | } | |
769 | if (len != rxas[i].datum_len) { | |
770 | free(ptr); | |
771 | goto still_abbrev; | |
772 | } | |
773 | ||
774 | sum_init(checksum_seed); | |
775 | sum_update(ptr, len); | |
776 | sum_end(sum); | |
777 | if (memcmp(sum, rxas[i].datum + 1, MAX_DIGEST_LEN) != 0) { | |
778 | free(ptr); | |
779 | goto still_abbrev; | |
780 | } | |
781 | ||
782 | if (fname == fnamecmp) | |
783 | ; /* Value is already set when identical */ | |
784 | else if (sys_lsetxattr(fname, name, ptr, len) < 0) { | |
3f0211b6 | 785 | rsyserr(FERROR_XFER, errno, |
16edf865 WD |
786 | "rsync_xal_set: lsetxattr(\"%s\",\"%s\") failed", |
787 | fname, name); | |
788 | ret = -1; | |
789 | } else /* make sure caller sets mtime */ | |
790 | sxp->st.st_mtime = (time_t)-1; | |
791 | ||
792 | if (am_generator) { /* generator items stay abbreviated */ | |
16edf865 WD |
793 | free(ptr); |
794 | continue; | |
795 | } | |
796 | ||
797 | memcpy(ptr + len, name, name_len); | |
798 | free(rxas[i].datum); | |
799 | ||
800 | rxas[i].name = name = ptr + len; | |
801 | rxas[i].datum = ptr; | |
802 | continue; | |
803 | } | |
804 | ||
805 | if (sys_lsetxattr(fname, name, rxas[i].datum, rxas[i].datum_len) < 0) { | |
3f0211b6 | 806 | rsyserr(FERROR_XFER, errno, |
16edf865 WD |
807 | "rsync_xal_set: lsetxattr(\"%s\",\"%s\") failed", |
808 | fname, name); | |
809 | ret = -1; | |
810 | } else /* make sure caller sets mtime */ | |
811 | sxp->st.st_mtime = (time_t)-1; | |
812 | } | |
813 | ||
814 | /* Remove any extraneous names. */ | |
815 | for (name = namebuf; list_len > 0; name += name_len) { | |
816 | name_len = strlen(name) + 1; | |
817 | list_len -= name_len; | |
818 | ||
819 | #ifdef HAVE_LINUX_XATTRS | |
820 | /* We always ignore the system namespace, and non-root | |
821 | * ignores everything but the user namespace. */ | |
822 | if (am_root ? HAS_PREFIX(name, SYSTEM_PREFIX) | |
823 | : !HAS_PREFIX(name, USER_PREFIX)) | |
824 | continue; | |
825 | #endif | |
e107b6b1 WD |
826 | if (am_root < 0 && name_len > RPRE_LEN |
827 | && name[RPRE_LEN] == '%' && strcmp(name, XSTAT_ATTR) == 0) | |
828 | continue; | |
16edf865 WD |
829 | |
830 | for (i = 0; i < xalp->count; i++) { | |
831 | if (strcmp(name, rxas[i].name) == 0) | |
832 | break; | |
833 | } | |
834 | if (i == xalp->count) { | |
835 | if (sys_lremovexattr(fname, name) < 0) { | |
3f0211b6 | 836 | rsyserr(FERROR_XFER, errno, |
16edf865 WD |
837 | "rsync_xal_clear: lremovexattr(\"%s\",\"%s\") failed", |
838 | fname, name); | |
839 | ret = -1; | |
840 | } else /* make sure caller sets mtime */ | |
841 | sxp->st.st_mtime = (time_t)-1; | |
842 | } | |
843 | } | |
844 | ||
845 | return ret; | |
846 | } | |
847 | ||
848 | /* Set extended attributes on indicated filename. */ | |
849 | int set_xattr(const char *fname, const struct file_struct *file, | |
13710874 | 850 | const char *fnamecmp, stat_x *sxp) |
16edf865 WD |
851 | { |
852 | int ndx; | |
853 | item_list *lst = rsync_xal_l.items; | |
854 | ||
855 | if (dry_run) | |
856 | return 1; /* FIXME: --dry-run needs to compute this value */ | |
857 | ||
858 | if (read_only || list_only) { | |
859 | errno = EROFS; | |
860 | return -1; | |
861 | } | |
862 | ||
863 | ndx = F_XATTR(file); | |
864 | return rsync_xal_set(fname, lst + ndx, fnamecmp, sxp); | |
865 | } | |
866 | ||
7ed6bc53 WD |
867 | #ifdef SUPPORT_ACLS |
868 | char *get_xattr_acl(const char *fname, int is_access_acl, size_t *len_p) | |
869 | { | |
870 | const char *name = is_access_acl ? XACC_ACL_ATTR : XDEF_ACL_ATTR; | |
e516b69e | 871 | *len_p = 0; /* no extra data alloc needed from get_xattr_data() */ |
7ed6bc53 WD |
872 | return get_xattr_data(fname, name, len_p, 1); |
873 | } | |
874 | ||
875 | int set_xattr_acl(const char *fname, int is_access_acl, const char *buf, size_t buf_len) | |
876 | { | |
877 | const char *name = is_access_acl ? XACC_ACL_ATTR : XDEF_ACL_ATTR; | |
878 | if (sys_lsetxattr(fname, name, buf, buf_len) < 0) { | |
3f0211b6 | 879 | rsyserr(FERROR_XFER, errno, |
7ed6bc53 WD |
880 | "set_xattr_acl: lsetxattr(\"%s\",\"%s\") failed", |
881 | fname, name); | |
882 | return -1; | |
883 | } | |
884 | return 0; | |
885 | } | |
886 | ||
887 | int del_def_xattr_acl(const char *fname) | |
888 | { | |
889 | return sys_lremovexattr(fname, XDEF_ACL_ATTR); | |
890 | } | |
891 | #endif | |
892 | ||
9439c0cb WD |
893 | int get_stat_xattr(const char *fname, int fd, STRUCT_STAT *fst, STRUCT_STAT *xst) |
894 | { | |
895 | int mode, rdev_major, rdev_minor, uid, gid, len; | |
896 | char buf[256]; | |
897 | ||
898 | if (am_root >= 0 || IS_DEVICE(fst->st_mode) || IS_SPECIAL(fst->st_mode)) | |
899 | return -1; | |
900 | ||
901 | if (xst) | |
902 | *xst = *fst; | |
903 | else | |
904 | xst = fst; | |
905 | if (fname) { | |
906 | fd = -1; | |
907 | len = sys_lgetxattr(fname, XSTAT_ATTR, buf, sizeof buf - 1); | |
908 | } else { | |
909 | fname = "fd"; | |
910 | len = sys_fgetxattr(fd, XSTAT_ATTR, buf, sizeof buf - 1); | |
911 | } | |
912 | if (len >= (int)sizeof buf) { | |
913 | len = -1; | |
914 | errno = ERANGE; | |
915 | } | |
916 | if (len < 0) { | |
917 | if (errno == ENOTSUP || errno == ENOATTR) | |
918 | return -1; | |
919 | if (errno == EPERM && S_ISLNK(fst->st_mode)) { | |
920 | xst->st_uid = 0; | |
921 | xst->st_gid = 0; | |
922 | return 0; | |
923 | } | |
3f0211b6 | 924 | rsyserr(FERROR_XFER, errno, "failed to read xattr %s for %s", |
9439c0cb WD |
925 | XSTAT_ATTR, full_fname(fname)); |
926 | return -1; | |
927 | } | |
928 | buf[len] = '\0'; | |
929 | ||
930 | if (sscanf(buf, "%o %d,%d %d:%d", | |
931 | &mode, &rdev_major, &rdev_minor, &uid, &gid) != 5) { | |
932 | rprintf(FERROR, "Corrupt %s xattr attached to %s: \"%s\"\n", | |
933 | XSTAT_ATTR, full_fname(fname), buf); | |
934 | exit_cleanup(RERR_FILEIO); | |
935 | } | |
936 | ||
937 | xst->st_mode = from_wire_mode(mode); | |
938 | xst->st_rdev = MAKEDEV(rdev_major, rdev_minor); | |
939 | xst->st_uid = uid; | |
940 | xst->st_gid = gid; | |
941 | ||
942 | return 0; | |
943 | } | |
944 | ||
e107b6b1 | 945 | int set_stat_xattr(const char *fname, struct file_struct *file, mode_t new_mode) |
9439c0cb WD |
946 | { |
947 | STRUCT_STAT fst, xst; | |
948 | dev_t rdev; | |
949 | mode_t mode, fmode; | |
950 | ||
951 | if (dry_run) | |
952 | return 0; | |
953 | ||
954 | if (read_only || list_only) { | |
3f0211b6 | 955 | rsyserr(FERROR_XFER, EROFS, "failed to write xattr %s for %s", |
9439c0cb WD |
956 | XSTAT_ATTR, full_fname(fname)); |
957 | return -1; | |
958 | } | |
959 | ||
960 | if (x_lstat(fname, &fst, &xst) < 0) { | |
3f0211b6 | 961 | rsyserr(FERROR_XFER, errno, "failed to re-stat %s", |
9439c0cb WD |
962 | full_fname(fname)); |
963 | return -1; | |
964 | } | |
965 | ||
966 | fst.st_mode &= (_S_IFMT | CHMOD_BITS); | |
e107b6b1 | 967 | fmode = new_mode & (_S_IFMT | CHMOD_BITS); |
9439c0cb WD |
968 | |
969 | if (IS_DEVICE(fmode) || IS_SPECIAL(fmode)) { | |
970 | uint32 *devp = F_RDEV_P(file); | |
971 | rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)); | |
972 | } else | |
973 | rdev = 0; | |
974 | ||
975 | /* Dump the special permissions and enable full owner access. */ | |
976 | mode = (fst.st_mode & _S_IFMT) | (fmode & ACCESSPERMS) | |
977 | | (S_ISDIR(fst.st_mode) ? 0700 : 0600); | |
978 | if (fst.st_mode != mode) | |
979 | do_chmod(fname, mode); | |
980 | if (!IS_DEVICE(fst.st_mode) && !IS_SPECIAL(fst.st_mode)) | |
981 | fst.st_rdev = 0; /* just in case */ | |
982 | ||
983 | if (mode == fmode && fst.st_rdev == rdev | |
fb7b9ddc | 984 | && fst.st_uid == F_OWNER(file) && fst.st_gid == F_GROUP(file)) { |
9439c0cb WD |
985 | /* xst.st_mode will be 0 if there's no current stat xattr */ |
986 | if (xst.st_mode && sys_lremovexattr(fname, XSTAT_ATTR) < 0) { | |
3f0211b6 | 987 | rsyserr(FERROR_XFER, errno, |
9439c0cb WD |
988 | "delete of stat xattr failed for %s", |
989 | full_fname(fname)); | |
990 | return -1; | |
991 | } | |
992 | return 0; | |
993 | } | |
994 | ||
995 | if (xst.st_mode != fmode || xst.st_rdev != rdev | |
fb7b9ddc | 996 | || xst.st_uid != F_OWNER(file) || xst.st_gid != F_GROUP(file)) { |
9439c0cb WD |
997 | char buf[256]; |
998 | int len = snprintf(buf, sizeof buf, "%o %u,%u %u:%u", | |
999 | to_wire_mode(fmode), | |
1000 | (int)major(rdev), (int)minor(rdev), | |
fb7b9ddc | 1001 | F_OWNER(file), F_GROUP(file)); |
9439c0cb WD |
1002 | if (sys_lsetxattr(fname, XSTAT_ATTR, buf, len) < 0) { |
1003 | if (errno == EPERM && S_ISLNK(fst.st_mode)) | |
1004 | return 0; | |
3f0211b6 | 1005 | rsyserr(FERROR_XFER, errno, |
9439c0cb WD |
1006 | "failed to write xattr %s for %s", |
1007 | XSTAT_ATTR, full_fname(fname)); | |
1008 | return -1; | |
1009 | } | |
1010 | } | |
1011 | ||
1012 | return 0; | |
1013 | } | |
1014 | ||
1015 | int x_stat(const char *fname, STRUCT_STAT *fst, STRUCT_STAT *xst) | |
1016 | { | |
1017 | int ret = do_stat(fname, fst); | |
1018 | if ((ret < 0 || get_stat_xattr(fname, -1, fst, xst) < 0) && xst) | |
1019 | xst->st_mode = 0; | |
1020 | return ret; | |
1021 | } | |
1022 | ||
1023 | int x_lstat(const char *fname, STRUCT_STAT *fst, STRUCT_STAT *xst) | |
1024 | { | |
1025 | int ret = do_lstat(fname, fst); | |
1026 | if ((ret < 0 || get_stat_xattr(fname, -1, fst, xst) < 0) && xst) | |
1027 | xst->st_mode = 0; | |
1028 | return ret; | |
1029 | } | |
1030 | ||
1031 | int x_fstat(int fd, STRUCT_STAT *fst, STRUCT_STAT *xst) | |
1032 | { | |
1033 | int ret = do_fstat(fd, fst); | |
1034 | if ((ret < 0 || get_stat_xattr(NULL, fd, fst, xst) < 0) && xst) | |
1035 | xst->st_mode = 0; | |
1036 | return ret; | |
1037 | } | |
1038 | ||
16edf865 | 1039 | #endif /* SUPPORT_XATTRS */ |