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Itemize xattrs of a missing dir from an alt-dest dir.
[rsync/qnx.git] / generator.c
blob32d56eac2f29f2cc10be35fc1f288b244ae0334b
1 /*
2 * Routines that are exclusive to the generator process.
3 *
4 * Copyright (C) 1996-2000 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2003-2009 Wayne Davison
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
21 */
22
23 #include "rsync.h"
24 #include "inums.h"
25 #include "ifuncs.h"
26
27 extern int dry_run;
28 extern int do_xfers;
29 extern int stdout_format_has_i;
30 extern int logfile_format_has_i;
31 extern int am_root;
32 extern int am_server;
33 extern int am_daemon;
34 extern int inc_recurse;
35 extern int relative_paths;
36 extern int implied_dirs;
37 extern int keep_dirlinks;
38 extern int preserve_acls;
39 extern int preserve_xattrs;
40 extern int preserve_links;
41 extern int preserve_devices;
42 extern int preserve_specials;
43 extern int preserve_hard_links;
44 extern int preserve_executability;
45 extern int preserve_perms;
46 extern int preserve_times;
47 extern int uid_ndx;
48 extern int gid_ndx;
49 extern int delete_mode;
50 extern int delete_before;
51 extern int delete_during;
52 extern int delete_after;
53 extern int missing_args;
54 extern int msgdone_cnt;
55 extern int ignore_errors;
56 extern int remove_source_files;
57 extern int delay_updates;
58 extern int update_only;
59 extern int human_readable;
60 extern int ignore_existing;
61 extern int ignore_non_existing;
62 extern int inplace;
63 extern int append_mode;
64 extern int make_backups;
65 extern int csum_length;
66 extern int ignore_times;
67 extern int size_only;
68 extern OFF_T max_size;
69 extern OFF_T min_size;
70 extern int io_error;
71 extern int flist_eof;
72 extern int allowed_lull;
73 extern int sock_f_out;
74 extern int protocol_version;
75 extern int file_total;
76 extern int fuzzy_basis;
77 extern int always_checksum;
78 extern int checksum_len;
79 extern char *partial_dir;
80 extern int compare_dest;
81 extern int copy_dest;
82 extern int link_dest;
83 extern int whole_file;
84 extern int list_only;
85 extern int read_batch;
86 extern int safe_symlinks;
87 extern long block_size; /* "long" because popt can't set an int32. */
88 extern int unsort_ndx;
89 extern int max_delete;
90 extern int force_delete;
91 extern int one_file_system;
92 extern int skipped_deletes;
93 extern dev_t filesystem_dev;
94 extern mode_t orig_umask;
95 extern uid_t our_uid;
96 extern char *tmpdir;
97 extern char *basis_dir[MAX_BASIS_DIRS+1];
98 extern struct file_list *cur_flist, *first_flist, *dir_flist;
99 extern filter_rule_list filter_list, daemon_filter_list;
100
101 int maybe_ATTRS_REPORT = 0;
102
103 static dev_t dev_zero;
104 static int deldelay_size = 0, deldelay_cnt = 0;
105 static char *deldelay_buf = NULL;
106 static int deldelay_fd = -1;
107 static int loopchk_limit;
108 static int dir_tweaking;
109 static int symlink_timeset_failed_flags;
110 static int need_retouch_dir_times;
111 static int need_retouch_dir_perms;
112 static const char *solo_file = NULL;
113
114 enum nonregtype {
115 TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
116 };
117
118 /* Forward declarations. */
119 #ifdef SUPPORT_HARD_LINKS
120 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
121 enum logcode code, int f_out);
122 #endif
123
124 #define EARLY_DELAY_DONE_MSG() (!delay_updates)
125 #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
126
127 static int start_delete_delay_temp(void)
128 {
129 char fnametmp[MAXPATHLEN];
130 int save_dry_run = dry_run;
131
132 dry_run = 0;
133 if (!get_tmpname(fnametmp, "deldelay", False)
134 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
135 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
136 inc_recurse ? "" : " -- switching to --delete-after");
137 delete_during = 0;
138 delete_after = !inc_recurse;
139 dry_run = save_dry_run;
140 return 0;
141 }
142 unlink(fnametmp);
143 dry_run = save_dry_run;
144 return 1;
145 }
146
147 static int flush_delete_delay(void)
148 {
149 if (deldelay_fd < 0 && !start_delete_delay_temp())
150 return 0;
151 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
152 rsyserr(FERROR, errno, "flush of delete-delay buffer");
153 delete_during = 0;
154 delete_after = !inc_recurse;
155 close(deldelay_fd);
156 return 0;
157 }
158 deldelay_cnt = 0;
159 return 1;
160 }
161
162 static int remember_delete(struct file_struct *file, const char *fname, int flags)
163 {
164 int len;
165
166 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
167 return 0;
168
169 if (flags & DEL_NO_UID_WRITE)
170 deldelay_buf[deldelay_cnt++] = '!';
171
172 while (1) {
173 len = snprintf(deldelay_buf + deldelay_cnt,
174 deldelay_size - deldelay_cnt,
175 "%x %s%c",
176 (int)file->mode, fname, '\0');
177 if ((deldelay_cnt += len) <= deldelay_size)
178 break;
179 deldelay_cnt -= len;
180 if (!flush_delete_delay())
181 return 0;
182 }
183
184 return 1;
185 }
186
187 static int read_delay_line(char *buf, int *flags_p)
188 {
189 static int read_pos = 0;
190 int j, len, mode;
191 char *bp, *past_space;
192
193 while (1) {
194 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
195 if (j < deldelay_cnt)
196 break;
197 if (deldelay_fd < 0) {
198 if (j > read_pos)
199 goto invalid_data;
200 return -1;
201 }
202 deldelay_cnt -= read_pos;
203 if (deldelay_cnt == deldelay_size)
204 goto invalid_data;
205 if (deldelay_cnt && read_pos) {
206 memmove(deldelay_buf, deldelay_buf + read_pos,
207 deldelay_cnt);
208 }
209 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
210 deldelay_size - deldelay_cnt);
211 if (len == 0) {
212 if (deldelay_cnt) {
213 rprintf(FERROR,
214 "ERROR: unexpected EOF in delete-delay file.\n");
215 }
216 return -1;
217 }
218 if (len < 0) {
219 rsyserr(FERROR, errno,
220 "reading delete-delay file");
221 return -1;
222 }
223 deldelay_cnt += len;
224 read_pos = 0;
225 }
226
227 bp = deldelay_buf + read_pos;
228 if (*bp == '!') {
229 bp++;
230 *flags_p = DEL_NO_UID_WRITE;
231 } else
232 *flags_p = 0;
233
234 if (sscanf(bp, "%x ", &mode) != 1) {
235 invalid_data:
236 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
237 return -1;
238 }
239 past_space = strchr(bp, ' ') + 1;
240 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
241 read_pos = j + 1;
242
243 if (len > MAXPATHLEN) {
244 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
245 return -1;
246 }
247
248 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
249 * instead of returning a pointer to our buffer. */
250 memcpy(buf, past_space, len);
251
252 return mode;
253 }
254
255 static void do_delayed_deletions(char *delbuf)
256 {
257 int mode, flags;
258
259 if (deldelay_fd >= 0) {
260 if (deldelay_cnt && !flush_delete_delay())
261 return;
262 lseek(deldelay_fd, 0, 0);
263 }
264 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
265 delete_item(delbuf, mode, flags | DEL_RECURSE);
266 if (deldelay_fd >= 0)
267 close(deldelay_fd);
268 }
269
270 /* This function is used to implement per-directory deletion, and is used by
271 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
272 * MAXPATHLEN buffer with the name of the directory in it (the functions we
273 * call will append names onto the end, but the old dir value will be restored
274 * on exit). */
275 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
276 {
277 static int already_warned = 0;
278 struct file_list *dirlist;
279 char delbuf[MAXPATHLEN];
280 int dlen, i;
281 int save_uid_ndx = uid_ndx;
282
283 if (!fbuf) {
284 change_local_filter_dir(NULL, 0, 0);
285 return;
286 }
287
288 if (DEBUG_GTE(DEL, 2))
289 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
290
291 if (allowed_lull)
292 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
293
294 if (io_error && !ignore_errors) {
295 if (already_warned)
296 return;
297 rprintf(FINFO,
298 "IO error encountered -- skipping file deletion\n");
299 already_warned = 1;
300 return;
301 }
302
303 dlen = strlen(fbuf);
304 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
305
306 if (one_file_system) {
307 if (file->flags & FLAG_TOP_DIR)
308 filesystem_dev = *fs_dev;
309 else if (filesystem_dev != *fs_dev)
310 return;
311 }
312
313 if (!uid_ndx)
314 uid_ndx = ++file_extra_cnt;
315
316 dirlist = get_dirlist(fbuf, dlen, 0);
317
318 /* If an item in dirlist is not found in flist, delete it
319 * from the filesystem. */
320 for (i = dirlist->used; i--; ) {
321 struct file_struct *fp = dirlist->files[i];
322 if (!F_IS_ACTIVE(fp))
323 continue;
324 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
325 if (INFO_GTE(MOUNT, 1))
326 rprintf(FINFO, "cannot delete mount point: %s\n",
327 f_name(fp, NULL));
328 continue;
329 }
330 /* Here we want to match regardless of file type. Replacement
331 * of a file with one of another type is handled separately by
332 * a delete_item call with a DEL_MAKE_ROOM flag. */
333 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
334 int flags = DEL_RECURSE;
335 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
336 flags |= DEL_NO_UID_WRITE;
337 f_name(fp, delbuf);
338 if (delete_during == 2) {
339 if (!remember_delete(fp, delbuf, flags))
340 break;
341 } else
342 delete_item(delbuf, fp->mode, flags);
343 }
344 }
345
346 flist_free(dirlist);
347
348 if (!save_uid_ndx) {
349 --file_extra_cnt;
350 uid_ndx = 0;
351 }
352 }
353
354 /* This deletes any files on the receiving side that are not present on the
355 * sending side. This is used by --delete-before and --delete-after. */
356 static void do_delete_pass(void)
357 {
358 char fbuf[MAXPATHLEN];
359 STRUCT_STAT st;
360 int j;
361
362 /* dry_run is incremented when the destination doesn't exist yet. */
363 if (dry_run > 1 || list_only)
364 return;
365
366 for (j = 0; j < cur_flist->used; j++) {
367 struct file_struct *file = cur_flist->sorted[j];
368
369 f_name(file, fbuf);
370
371 if (!(file->flags & FLAG_CONTENT_DIR)) {
372 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
373 continue;
374 }
375
376 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
377 rprintf(FINFO, "deleting in %s\n", fbuf);
378
379 if (link_stat(fbuf, &st, keep_dirlinks) < 0
380 || !S_ISDIR(st.st_mode))
381 continue;
382
383 delete_in_dir(fbuf, file, &st.st_dev);
384 }
385 delete_in_dir(NULL, NULL, &dev_zero);
386
387 if (INFO_GTE(FLIST, 2) && !am_server)
388 rprintf(FINFO, " \r");
389 }
390
391 static inline int time_differs(struct file_struct *file, stat_x *sxp)
392 {
393 return cmp_time(sxp->st.st_mtime, file->modtime);
394 }
395
396 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
397 {
398 if (preserve_perms)
399 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
400
401 if (preserve_executability)
402 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
403
404 return 0;
405 }
406
407 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
408 {
409 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
410 return 1;
411
412 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
413 return 1;
414
415 return 0;
416 }
417
418 #ifdef SUPPORT_ACLS
419 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
420 {
421 if (preserve_acls) {
422 if (!ACL_READY(*sxp))
423 get_acl(fname, sxp);
424 if (set_acl(NULL, file, sxp, file->mode))
425 return 1;
426 }
427
428 return 0;
429 }
430 #endif
431
432 #ifdef SUPPORT_XATTRS
433 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
434 {
435 if (preserve_xattrs) {
436 if (!XATTR_READY(*sxp))
437 get_xattr(fname, sxp);
438 if (xattr_diff(file, sxp, 0))
439 return 1;
440 }
441
442 return 0;
443 }
444 #endif
445
446 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
447 {
448 if (S_ISLNK(file->mode)) {
449 #ifdef CAN_SET_SYMLINK_TIMES
450 if (preserve_times & PRESERVE_LINK_TIMES && time_differs(file, sxp))
451 return 0;
452 #endif
453 #ifdef CAN_CHMOD_SYMLINK
454 if (perms_differ(file, sxp))
455 return 0;
456 #endif
457 #ifndef CAN_CHOWN_SYMLINK
458 if (ownership_differs(file, sxp))
459 return 0;
460 #endif
461 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
462 if (acls_differ(fname, file, sxp))
463 return 0;
464 #endif
465 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
466 if (xattrs_differ(fname, file, sxp))
467 return 0;
468 #endif
469 } else {
470 if (preserve_times && time_differs(file, sxp))
471 return 0;
472 if (perms_differ(file, sxp))
473 return 0;
474 if (ownership_differs(file, sxp))
475 return 0;
476 #ifdef SUPPORT_ACLS
477 if (acls_differ(fname, file, sxp))
478 return 0;
479 #endif
480 #ifdef SUPPORT_XATTRS
481 if (xattrs_differ(fname, file, sxp))
482 return 0;
483 #endif
484 }
485
486 return 1;
487 }
488
489 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
490 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
491 const char *xname)
492 {
493 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
494 int keep_time = !preserve_times ? 0
495 : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
496 : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
497 : 1;
498
499 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
500 iflags |= ITEM_REPORT_SIZE;
501 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
502 if (iflags & ITEM_LOCAL_CHANGE)
503 iflags |= symlink_timeset_failed_flags;
504 } else if (keep_time
505 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
506 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
507 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
508 iflags |= ITEM_REPORT_TIME;
509 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
510 if (S_ISLNK(file->mode)) {
511 ;
512 } else
513 #endif
514 if (preserve_perms) {
515 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
516 iflags |= ITEM_REPORT_PERMS;
517 } else if (preserve_executability
518 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
519 iflags |= ITEM_REPORT_PERMS;
520 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
521 iflags |= ITEM_REPORT_OWNER;
522 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
523 && sxp->st.st_gid != (gid_t)F_GROUP(file))
524 iflags |= ITEM_REPORT_GROUP;
525 #ifdef SUPPORT_ACLS
526 if (preserve_acls && !S_ISLNK(file->mode)) {
527 if (!ACL_READY(*sxp))
528 get_acl(fnamecmp, sxp);
529 if (set_acl(NULL, file, sxp, file->mode))
530 iflags |= ITEM_REPORT_ACL;
531 }
532 #endif
533 #ifdef SUPPORT_XATTRS
534 if (preserve_xattrs) {
535 if (!XATTR_READY(*sxp))
536 get_xattr(fnamecmp, sxp);
537 if (xattr_diff(file, sxp, 1))
538 iflags |= ITEM_REPORT_XATTR;
539 }
540 #endif
541 } else {
542 #ifdef SUPPORT_XATTRS
543 if (preserve_xattrs && xattr_diff(file, NULL, 1))
544 iflags |= ITEM_REPORT_XATTR;
545 #endif
546 iflags |= ITEM_IS_NEW;
547 }
548
549 iflags &= 0xffff;
550 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
551 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
552 if (protocol_version >= 29) {
553 if (ndx >= 0)
554 write_ndx(sock_f_out, ndx);
555 write_shortint(sock_f_out, iflags);
556 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
557 write_byte(sock_f_out, fnamecmp_type);
558 if (iflags & ITEM_XNAME_FOLLOWS)
559 write_vstring(sock_f_out, xname, strlen(xname));
560 #ifdef SUPPORT_XATTRS
561 if (preserve_xattrs && do_xfers
562 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
563 send_xattr_request(NULL, file,
564 iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
565 }
566 #endif
567 } else if (ndx >= 0) {
568 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
569 log_item(code, file, iflags, xname);
570 }
571 }
572 }
573
574
575 /* Perform our quick-check heuristic for determining if a file is unchanged. */
576 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
577 {
578 if (st->st_size != F_LENGTH(file))
579 return 0;
580
581 /* if always checksum is set then we use the checksum instead
582 of the file time to determine whether to sync */
583 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
584 char sum[MAX_DIGEST_LEN];
585 file_checksum(fn, sum, st->st_size);
586 return memcmp(sum, F_SUM(file), checksum_len) == 0;
587 }
588
589 if (size_only > 0)
590 return 1;
591
592 if (ignore_times)
593 return 0;
594
595 return cmp_time(st->st_mtime, file->modtime) == 0;
596 }
597
598
599 /*
600 * set (initialize) the size entries in the per-file sum_struct
601 * calculating dynamic block and checksum sizes.
602 *
603 * This is only called from generate_and_send_sums() but is a separate
604 * function to encapsulate the logic.
605 *
606 * The block size is a rounded square root of file length.
607 *
608 * The checksum size is determined according to:
609 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
610 * provided by Donovan Baarda which gives a probability of rsync
611 * algorithm corrupting data and falling back using the whole md4
612 * checksums.
613 *
614 * This might be made one of several selectable heuristics.
615 */
616 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
617 {
618 int32 blength;
619 int s2length;
620 int64 l;
621
622 if (len < 0) {
623 /* The file length overflowed our int64 var, so we can't process this file. */
624 sum->count = -1; /* indicate overflow error */
625 return;
626 }
627
628 if (block_size)
629 blength = block_size;
630 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
631 blength = BLOCK_SIZE;
632 else {
633 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
634 int32 c;
635 int cnt;
636 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
637 if (c < 0 || c >= max_blength)
638 blength = max_blength;
639 else {
640 blength = 0;
641 do {
642 blength |= c;
643 if (len < (int64)blength * blength)
644 blength &= ~c;
645 c >>= 1;
646 } while (c >= 8); /* round to multiple of 8 */
647 blength = MAX(blength, BLOCK_SIZE);
648 }
649 }
650
651 if (protocol_version < 27) {
652 s2length = csum_length;
653 } else if (csum_length == SUM_LENGTH) {
654 s2length = SUM_LENGTH;
655 } else {
656 int32 c;
657 int b = BLOCKSUM_BIAS;
658 for (l = len; l >>= 1; b += 2) {}
659 for (c = blength; (c >>= 1) && b; b--) {}
660 /* add a bit, subtract rollsum, round up. */
661 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
662 s2length = MAX(s2length, csum_length);
663 s2length = MIN(s2length, SUM_LENGTH);
664 }
665
666 sum->flength = len;
667 sum->blength = blength;
668 sum->s2length = s2length;
669 sum->remainder = (int32)(len % blength);
670 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
671
672 if ((int64)sum->count != l)
673 sum->count = -1;
674
675 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
676 rprintf(FINFO,
677 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
678 big_num(sum->count), (long)sum->remainder, (long)sum->blength,
679 sum->s2length, big_num(sum->flength));
680 }
681 }
682
683
684 /*
685 * Generate and send a stream of signatures/checksums that describe a buffer
686 *
687 * Generate approximately one checksum every block_len bytes.
688 */
689 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
690 {
691 int32 i;
692 struct map_struct *mapbuf;
693 struct sum_struct sum;
694 OFF_T offset = 0;
695
696 sum_sizes_sqroot(&sum, len);
697 if (sum.count < 0)
698 return -1;
699 write_sum_head(f_out, &sum);
700
701 if (append_mode > 0 && f_copy < 0)
702 return 0;
703
704 if (len > 0)
705 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
706 else
707 mapbuf = NULL;
708
709 for (i = 0; i < sum.count; i++) {
710 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
711 char *map = map_ptr(mapbuf, offset, n1);
712 char sum2[SUM_LENGTH];
713 uint32 sum1;
714
715 len -= n1;
716 offset += n1;
717
718 if (f_copy >= 0) {
719 full_write(f_copy, map, n1);
720 if (append_mode > 0)
721 continue;
722 }
723
724 sum1 = get_checksum1(map, n1);
725 get_checksum2(map, n1, sum2);
726
727 if (DEBUG_GTE(DELTASUM, 3)) {
728 rprintf(FINFO,
729 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
730 big_num(i), big_num(offset - n1), (long)n1,
731 (unsigned long)sum1);
732 }
733 write_int(f_out, sum1);
734 write_buf(f_out, sum2, sum.s2length);
735 }
736
737 if (mapbuf)
738 unmap_file(mapbuf);
739
740 return 0;
741 }
742
743
744 /* Try to find a filename in the same dir as "fname" with a similar name. */
745 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
746 {
747 int fname_len, fname_suf_len;
748 const char *fname_suf, *fname = file->basename;
749 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
750 int j, lowest_j = -1;
751
752 fname_len = strlen(fname);
753 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
754
755 for (j = 0; j < dirlist->used; j++) {
756 struct file_struct *fp = dirlist->files[j];
757 const char *suf, *name;
758 int len, suf_len;
759 uint32 dist;
760
761 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
762 || fp->flags & FLAG_FILE_SENT)
763 continue;
764
765 name = fp->basename;
766
767 if (F_LENGTH(fp) == F_LENGTH(file)
768 && cmp_time(fp->modtime, file->modtime) == 0) {
769 if (DEBUG_GTE(FUZZY, 2)) {
770 rprintf(FINFO,
771 "fuzzy size/modtime match for %s\n",
772 name);
773 }
774 return j;
775 }
776
777 len = strlen(name);
778 suf = find_filename_suffix(name, len, &suf_len);
779
780 dist = fuzzy_distance(name, len, fname, fname_len);
781 /* Add some extra weight to how well the suffixes match. */
782 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
783 * 10;
784 if (DEBUG_GTE(FUZZY, 2)) {
785 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
786 name, (int)(dist>>16), (int)(dist&0xFFFF));
787 }
788 if (dist <= lowest_dist) {
789 lowest_dist = dist;
790 lowest_j = j;
791 }
792 }
793
794 return lowest_j;
795 }
796
797 /* Copy a file found in our --copy-dest handling. */
798 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
799 {
800 char buf[MAXPATHLEN];
801 const char *copy_to, *partialptr;
802 int save_preserve_xattrs = preserve_xattrs;
803 int ok, fd_w;
804
805 if (inplace) {
806 /* Let copy_file open the destination in place. */
807 fd_w = -1;
808 copy_to = dest;
809 } else {
810 fd_w = open_tmpfile(buf, dest, file);
811 if (fd_w < 0)
812 return -1;
813 copy_to = buf;
814 }
815 cleanup_set(copy_to, NULL, NULL, -1, -1);
816 if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
817 if (INFO_GTE(COPY, 1)) {
818 rsyserr(FINFO, errno, "copy_file %s => %s",
819 full_fname(src), copy_to);
820 }
821 /* Try to clean up. */
822 unlink(copy_to);
823 cleanup_disable();
824 return -1;
825 }
826 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
827 preserve_xattrs = 0; /* xattrs were copied with file */
828 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
829 preserve_xattrs = save_preserve_xattrs;
830 cleanup_disable();
831 return ok ? 0 : -1;
832 }
833
834 /* This is only called for regular files. We return -2 if we've finished
835 * handling the file, -1 if no dest-linking occurred, or a non-negative
836 * value if we found an alternate basis file. */
837 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
838 char *cmpbuf, stat_x *sxp, int itemizing,
839 enum logcode code)
840 {
841 int best_match = -1;
842 int match_level = 0;
843 int j = 0;
844
845 do {
846 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
847 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
848 continue;
849 switch (match_level) {
850 case 0:
851 best_match = j;
852 match_level = 1;
853 /* FALL THROUGH */
854 case 1:
855 if (!unchanged_file(cmpbuf, file, &sxp->st))
856 continue;
857 best_match = j;
858 match_level = 2;
859 /* FALL THROUGH */
860 case 2:
861 if (!unchanged_attrs(cmpbuf, file, sxp))
862 continue;
863 best_match = j;
864 match_level = 3;
865 break;
866 }
867 break;
868 } while (basis_dir[++j] != NULL);
869
870 if (!match_level)
871 return -1;
872
873 if (j != best_match) {
874 j = best_match;
875 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
876 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
877 return -1;
878 }
879
880 if (match_level == 3 && !copy_dest) {
881 #ifdef SUPPORT_HARD_LINKS
882 if (link_dest) {
883 if (!hard_link_one(file, fname, cmpbuf, 1))
884 goto try_a_copy;
885 if (preserve_hard_links && F_IS_HLINKED(file))
886 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
887 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
888 itemize(cmpbuf, file, ndx, 1, sxp,
889 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
890 0, "");
891 }
892 } else
893 #endif
894 if (itemizing)
895 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
896 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
897 rprintf(FCLIENT, "%s is uptodate\n", fname);
898 return -2;
899 }
900
901 if (match_level >= 2) {
902 #ifdef SUPPORT_HARD_LINKS
903 try_a_copy: /* Copy the file locally. */
904 #endif
905 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
906 return -1;
907 if (itemizing)
908 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
909 if (maybe_ATTRS_REPORT
910 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
911 || (INFO_GTE(NAME, 2) && match_level == 3))) {
912 code = match_level == 3 ? FCLIENT : FINFO;
913 rprintf(code, "%s%s\n", fname,
914 match_level == 3 ? " is uptodate" : "");
915 }
916 #ifdef SUPPORT_HARD_LINKS
917 if (preserve_hard_links && F_IS_HLINKED(file))
918 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
919 #endif
920 return -2;
921 }
922
923 return FNAMECMP_BASIS_DIR_LOW + j;
924 }
925
926 /* This is only called for non-regular files. We return -2 if we've finished
927 * handling the file, or -1 if no dest-linking occurred, or a non-negative
928 * value if we found an alternate basis file. */
929 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
930 char *cmpbuf, stat_x *sxp, int itemizing,
931 enum logcode code)
932 {
933 int best_match = -1;
934 int match_level = 0;
935 enum nonregtype type;
936 uint32 *devp;
937 #ifdef SUPPORT_LINKS
938 char lnk[MAXPATHLEN];
939 int len;
940 #endif
941 int j = 0;
942
943 #ifndef SUPPORT_LINKS
944 if (S_ISLNK(file->mode))
945 return -1;
946 #endif
947 if (S_ISDIR(file->mode)) {
948 type = TYPE_DIR;
949 } else if (IS_SPECIAL(file->mode))
950 type = TYPE_SPECIAL;
951 else if (IS_DEVICE(file->mode))
952 type = TYPE_DEVICE;
953 #ifdef SUPPORT_LINKS
954 else if (S_ISLNK(file->mode))
955 type = TYPE_SYMLINK;
956 #endif
957 else {
958 rprintf(FERROR,
959 "internal: try_dests_non() called with invalid mode (%o)\n",
960 (int)file->mode);
961 exit_cleanup(RERR_UNSUPPORTED);
962 }
963
964 do {
965 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
966 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
967 continue;
968 switch (type) {
969 case TYPE_DIR:
970 if (!S_ISDIR(sxp->st.st_mode))
971 continue;
972 break;
973 case TYPE_SPECIAL:
974 if (!IS_SPECIAL(sxp->st.st_mode))
975 continue;
976 break;
977 case TYPE_DEVICE:
978 if (!IS_DEVICE(sxp->st.st_mode))
979 continue;
980 break;
981 case TYPE_SYMLINK:
982 #ifdef SUPPORT_LINKS
983 if (!S_ISLNK(sxp->st.st_mode))
984 continue;
985 break;
986 #else
987 return -1;
988 #endif
989 }
990 if (match_level < 1) {
991 match_level = 1;
992 best_match = j;
993 }
994 switch (type) {
995 case TYPE_DIR:
996 case TYPE_SPECIAL:
997 break;
998 case TYPE_DEVICE:
999 devp = F_RDEV_P(file);
1000 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1001 continue;
1002 break;
1003 case TYPE_SYMLINK:
1004 #ifdef SUPPORT_LINKS
1005 if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1006 continue;
1007 lnk[len] = '\0';
1008 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1009 continue;
1010 break;
1011 #else
1012 return -1;
1013 #endif
1014 }
1015 if (match_level < 2) {
1016 match_level = 2;
1017 best_match = j;
1018 }
1019 if (unchanged_attrs(cmpbuf, file, sxp)) {
1020 match_level = 3;
1021 best_match = j;
1022 break;
1023 }
1024 } while (basis_dir[++j] != NULL);
1025
1026 if (!match_level)
1027 return -1;
1028
1029 if (j != best_match) {
1030 j = best_match;
1031 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1032 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1033 return -1;
1034 }
1035
1036 if (match_level == 3) {
1037 #ifdef SUPPORT_HARD_LINKS
1038 if (link_dest
1039 #ifndef CAN_HARDLINK_SYMLINK
1040 && !S_ISLNK(file->mode)
1041 #endif
1042 #ifndef CAN_HARDLINK_SPECIAL
1043 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1044 #endif
1045 && !S_ISDIR(file->mode)) {
1046 if (do_link(cmpbuf, fname) < 0) {
1047 rsyserr(FERROR_XFER, errno,
1048 "failed to hard-link %s with %s",
1049 cmpbuf, fname);
1050 return j;
1051 }
1052 if (preserve_hard_links && F_IS_HLINKED(file))
1053 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1054 } else
1055 #endif
1056 match_level = 2;
1057 if (itemizing && stdout_format_has_i
1058 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1059 int chg = compare_dest && type != TYPE_DIR ? 0
1060 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1061 char *lp = match_level == 3 ? "" : NULL;
1062 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1063 }
1064 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1065 rprintf(FCLIENT, "%s%s is uptodate\n",
1066 fname, type == TYPE_DIR ? "/" : "");
1067 }
1068 return -2;
1069 }
1070
1071 return j;
1072 }
1073
1074 static void list_file_entry(struct file_struct *f)
1075 {
1076 char permbuf[PERMSTRING_SIZE];
1077 int64 len;
1078 int colwidth = human_readable ? 14 : 11;
1079
1080 if (!F_IS_ACTIVE(f)) {
1081 /* this can happen if duplicate names were removed */
1082 return;
1083 }
1084
1085 permstring(permbuf, f->mode);
1086 len = F_LENGTH(f);
1087
1088 /* TODO: indicate '+' if the entry has an ACL. */
1089
1090 #ifdef SUPPORT_LINKS
1091 if (preserve_links && S_ISLNK(f->mode)) {
1092 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1093 permbuf, colwidth, human_num(len),
1094 timestring(f->modtime), f_name(f, NULL),
1095 F_SYMLINK(f));
1096 } else
1097 #endif
1098 if (missing_args == 2 && f->mode == 0) {
1099 rprintf(FINFO, "%-*s %s\n",
1100 colwidth + 31, "*missing",
1101 f_name(f, NULL));
1102 } else {
1103 rprintf(FINFO, "%s %*s %s %s\n",
1104 permbuf, colwidth, human_num(len),
1105 timestring(f->modtime), f_name(f, NULL));
1106 }
1107 }
1108
1109 static int phase = 0;
1110 static int dflt_perms;
1111
1112 static int implied_dirs_are_missing;
1113 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1114 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1115 {
1116 return F_DEPTH(file) > F_DEPTH(subtree)
1117 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1118 }
1119
1120 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1121 * make sure it exists, and has the right permissions/timestamp info. For
1122 * all other non-regular files (symlinks, etc.) we create them here. For
1123 * regular files that have changed, we try to find a basis file and then
1124 * start sending checksums. The ndx is the file's unique index value.
1125 *
1126 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1127 * passed to delete_item(), which can use it during a recursive delete.)
1128 *
1129 * Note that f_out is set to -1 when doing final directory-permission and
1130 * modification-time repair. */
1131 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1132 int itemizing, enum logcode code, int f_out)
1133 {
1134 static const char *parent_dirname = "";
1135 /* Missing dir not created due to --dry-run; will still be scanned. */
1136 static struct file_struct *dry_missing_dir = NULL;
1137 /* Missing dir whose contents are skipped altogether due to
1138 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1139 static struct file_struct *skip_dir = NULL;
1140 static struct file_list *fuzzy_dirlist = NULL;
1141 static int need_fuzzy_dirlist = 0;
1142 struct file_struct *fuzzy_file = NULL;
1143 int fd = -1, f_copy = -1;
1144 stat_x sx, real_sx;
1145 STRUCT_STAT partial_st;
1146 struct file_struct *back_file = NULL;
1147 int statret, real_ret, stat_errno;
1148 char *fnamecmp, *partialptr, *backupptr = NULL;
1149 char fnamecmpbuf[MAXPATHLEN];
1150 uchar fnamecmp_type;
1151 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1152 int is_dir = !S_ISDIR(file->mode) ? 0
1153 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1154 : 1;
1155
1156 if (DEBUG_GTE(GENR, 1))
1157 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1158
1159 if (list_only) {
1160 if (is_dir < 0
1161 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1162 return;
1163 list_file_entry(file);
1164 return;
1165 }
1166
1167 if (skip_dir) {
1168 if (is_below(file, skip_dir)) {
1169 if (is_dir)
1170 file->flags |= FLAG_MISSING_DIR;
1171 #ifdef SUPPORT_HARD_LINKS
1172 else if (F_IS_HLINKED(file))
1173 handle_skipped_hlink(file, itemizing, code, f_out);
1174 #endif
1175 return;
1176 }
1177 skip_dir = NULL;
1178 }
1179
1180 init_stat_x(&sx);
1181 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1182 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1183 if (is_dir < 0)
1184 return;
1185 #ifdef SUPPORT_HARD_LINKS
1186 if (F_IS_HLINKED(file))
1187 handle_skipped_hlink(file, itemizing, code, f_out);
1188 #endif
1189 rprintf(FERROR_XFER,
1190 "skipping daemon-excluded %s \"%s\"\n",
1191 is_dir ? "directory" : "file", fname);
1192 if (is_dir)
1193 goto skipping_dir_contents;
1194 return;
1195 }
1196 }
1197
1198 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1199 parent_is_dry_missing:
1200 if (fuzzy_dirlist) {
1201 flist_free(fuzzy_dirlist);
1202 fuzzy_dirlist = NULL;
1203 }
1204 parent_dirname = "";
1205 statret = -1;
1206 stat_errno = ENOENT;
1207 } else {
1208 const char *dn = file->dirname ? file->dirname : ".";
1209 dry_missing_dir = NULL;
1210 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1211 if (relative_paths && !implied_dirs
1212 && do_stat(dn, &sx.st) < 0) {
1213 if (dry_run)
1214 goto parent_is_dry_missing;
1215 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1216 rsyserr(FERROR_XFER, errno,
1217 "recv_generator: mkdir %s failed",
1218 full_fname(dn));
1219 }
1220 }
1221 if (fuzzy_dirlist) {
1222 flist_free(fuzzy_dirlist);
1223 fuzzy_dirlist = NULL;
1224 }
1225 if (fuzzy_basis)
1226 need_fuzzy_dirlist = 1;
1227 #ifdef SUPPORT_ACLS
1228 if (!preserve_perms)
1229 dflt_perms = default_perms_for_dir(dn);
1230 #endif
1231 }
1232 parent_dirname = dn;
1233
1234 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1235 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1236 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1237 need_fuzzy_dirlist = 0;
1238 }
1239
1240 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1241 stat_errno = errno;
1242 }
1243
1244 if (missing_args == 2 && file->mode == 0) {
1245 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1246 return;
1247 if (statret == 0)
1248 delete_item(fname, sx.st.st_mode, del_opts);
1249 return;
1250 }
1251
1252 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1253 if (is_dir) {
1254 if (is_dir < 0)
1255 return;
1256 skip_dir = file;
1257 file->flags |= FLAG_MISSING_DIR;
1258 }
1259 #ifdef SUPPORT_HARD_LINKS
1260 else if (F_IS_HLINKED(file))
1261 handle_skipped_hlink(file, itemizing, code, f_out);
1262 #endif
1263 if (INFO_GTE(SKIP, 1)) {
1264 rprintf(FINFO, "not creating new %s \"%s\"\n",
1265 is_dir ? "directory" : "file", fname);
1266 }
1267 return;
1268 }
1269
1270 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1271 && !am_root && sx.st.st_uid == our_uid)
1272 del_opts |= DEL_NO_UID_WRITE;
1273
1274 if (ignore_existing > 0 && statret == 0
1275 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1276 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1277 rprintf(FINFO, "%s exists\n", fname);
1278 #ifdef SUPPORT_HARD_LINKS
1279 if (F_IS_HLINKED(file))
1280 handle_skipped_hlink(file, itemizing, code, f_out);
1281 #endif
1282 goto cleanup;
1283 }
1284
1285 fnamecmp = fname;
1286
1287 if (is_dir) {
1288 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1289 goto cleanup;
1290 if (is_dir < 0) {
1291 /* In inc_recurse mode we want to make sure any missing
1292 * directories get created while we're still processing
1293 * the parent dir (which allows us to touch the parent
1294 * dir's mtime right away). We will handle the dir in
1295 * full later (right before we handle its contents). */
1296 if (statret == 0
1297 && (S_ISDIR(sx.st.st_mode)
1298 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1299 goto cleanup; /* Any errors get reported later. */
1300 if (do_mkdir(fname, file->mode & 0700) == 0)
1301 file->flags |= FLAG_DIR_CREATED;
1302 goto cleanup;
1303 }
1304 /* The file to be received is a directory, so we need
1305 * to prepare appropriately. If there is already a
1306 * file of that name and it is *not* a directory, then
1307 * we need to delete it. If it doesn't exist, then
1308 * (perhaps recursively) create it. */
1309 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1310 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1311 goto skipping_dir_contents;
1312 statret = -1;
1313 }
1314 if (dry_run && statret != 0) {
1315 if (!dry_missing_dir)
1316 dry_missing_dir = file;
1317 file->flags |= FLAG_MISSING_DIR;
1318 }
1319 real_ret = statret;
1320 real_sx = sx;
1321 if (file->flags & FLAG_DIR_CREATED)
1322 statret = -1;
1323 if (!preserve_perms) { /* See comment in non-dir code below. */
1324 file->mode = dest_mode(file->mode, sx.st.st_mode,
1325 dflt_perms, statret == 0);
1326 }
1327 if (statret != 0 && basis_dir[0] != NULL) {
1328 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1329 itemizing, code);
1330 if (j == -2) {
1331 itemizing = 0;
1332 code = FNONE;
1333 statret = 1;
1334 } else if (j >= 0) {
1335 statret = 1;
1336 fnamecmp = fnamecmpbuf;
1337 }
1338 }
1339 if (itemizing && f_out != -1) {
1340 itemize(fnamecmp, file, ndx, statret, &sx,
1341 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1342 }
1343 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1344 if (!relative_paths || errno != ENOENT
1345 || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1346 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1347 rsyserr(FERROR_XFER, errno,
1348 "recv_generator: mkdir %s failed",
1349 full_fname(fname));
1350 skipping_dir_contents:
1351 rprintf(FERROR,
1352 "*** Skipping any contents from this failed directory ***\n");
1353 skip_dir = file;
1354 file->flags |= FLAG_MISSING_DIR;
1355 goto cleanup;
1356 }
1357 }
1358 #ifdef SUPPORT_XATTRS
1359 if (preserve_xattrs && statret == 1)
1360 copy_xattrs(fnamecmpbuf, fname);
1361 #endif
1362 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1363 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1364 rprintf(code, "%s/\n", fname);
1365
1366 /* We need to ensure that the dirs in the transfer have writable
1367 * permissions during the time we are putting files within them.
1368 * This is then fixed after the transfer is done. */
1369 #ifdef HAVE_CHMOD
1370 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1371 mode_t mode = file->mode | S_IWUSR;
1372 if (do_chmod(fname, mode) < 0) {
1373 rsyserr(FERROR_XFER, errno,
1374 "failed to modify permissions on %s",
1375 full_fname(fname));
1376 }
1377 need_retouch_dir_perms = 1;
1378 }
1379 #endif
1380
1381 if (real_ret != 0 && one_file_system)
1382 real_sx.st.st_dev = filesystem_dev;
1383 if (inc_recurse) {
1384 if (one_file_system) {
1385 uint32 *devp = F_DIR_DEV_P(file);
1386 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1387 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1388 }
1389 }
1390 else if (delete_during && f_out != -1 && !phase
1391 && !(file->flags & FLAG_MISSING_DIR)) {
1392 if (file->flags & FLAG_CONTENT_DIR)
1393 delete_in_dir(fname, file, &real_sx.st.st_dev);
1394 else
1395 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1396 }
1397 goto cleanup;
1398 }
1399
1400 /* If we're not preserving permissions, change the file-list's
1401 * mode based on the local permissions and some heuristics. */
1402 if (!preserve_perms) {
1403 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1404 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1405 exists);
1406 }
1407
1408 #ifdef SUPPORT_HARD_LINKS
1409 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1410 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1411 goto cleanup;
1412 #endif
1413
1414 if (preserve_links && S_ISLNK(file->mode)) {
1415 #ifdef SUPPORT_LINKS
1416 const char *sl = F_SYMLINK(file);
1417 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1418 if (INFO_GTE(NAME, 1)) {
1419 if (solo_file) {
1420 /* fname contains the destination path, but we
1421 * want to report the source path. */
1422 fname = f_name(file, NULL);
1423 }
1424 rprintf(FINFO,
1425 "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1426 fname, sl);
1427 }
1428 return;
1429 }
1430 if (statret == 0) {
1431 char lnk[MAXPATHLEN];
1432 int len;
1433
1434 if (S_ISLNK(sx.st.st_mode)
1435 && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1436 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1437 /* The link is pointing to the right place. */
1438 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1439 if (itemizing)
1440 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1441 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1442 if (preserve_hard_links && F_IS_HLINKED(file))
1443 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1444 #endif
1445 if (remove_source_files == 1)
1446 goto return_with_success;
1447 goto cleanup;
1448 }
1449 } else if (basis_dir[0] != NULL) {
1450 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1451 itemizing, code);
1452 if (j == -2) {
1453 #ifndef CAN_HARDLINK_SYMLINK
1454 if (link_dest) {
1455 /* Resort to --copy-dest behavior. */
1456 } else
1457 #endif
1458 if (!copy_dest)
1459 goto cleanup;
1460 itemizing = 0;
1461 code = FNONE;
1462 } else if (j >= 0)
1463 statret = 1;
1464 }
1465 if (atomic_create(file, fname, sl, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1466 set_file_attrs(fname, file, NULL, NULL, 0);
1467 if (itemizing) {
1468 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1469 statret = -1;
1470 itemize(fname, file, ndx, statret, &sx,
1471 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1472 }
1473 if (code != FNONE && INFO_GTE(NAME, 1))
1474 rprintf(code, "%s -> %s\n", fname, sl);
1475 #ifdef SUPPORT_HARD_LINKS
1476 if (preserve_hard_links && F_IS_HLINKED(file))
1477 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1478 #endif
1479 /* This does not check remove_source_files == 1
1480 * because this is one of the items that the old
1481 * --remove-sent-files option would remove. */
1482 if (remove_source_files)
1483 goto return_with_success;
1484 }
1485 #endif
1486 goto cleanup;
1487 }
1488
1489 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1490 || (preserve_specials && IS_SPECIAL(file->mode))) {
1491 dev_t rdev;
1492 int del_for_flag = 0;
1493 if (IS_DEVICE(file->mode)) {
1494 uint32 *devp = F_RDEV_P(file);
1495 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1496 } else
1497 rdev = 0;
1498 if (statret == 0) {
1499 if (IS_DEVICE(file->mode)) {
1500 if (!IS_DEVICE(sx.st.st_mode))
1501 statret = -1;
1502 del_for_flag = DEL_FOR_DEVICE;
1503 } else {
1504 if (!IS_SPECIAL(sx.st.st_mode))
1505 statret = -1;
1506 del_for_flag = DEL_FOR_SPECIAL;
1507 }
1508 if (statret == 0
1509 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1510 && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1511 /* The device or special file is identical. */
1512 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1513 if (itemizing)
1514 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1515 #ifdef SUPPORT_HARD_LINKS
1516 if (preserve_hard_links && F_IS_HLINKED(file))
1517 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1518 #endif
1519 if (remove_source_files == 1)
1520 goto return_with_success;
1521 goto cleanup;
1522 }
1523 } else if (basis_dir[0] != NULL) {
1524 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1525 itemizing, code);
1526 if (j == -2) {
1527 #ifndef CAN_HARDLINK_SPECIAL
1528 if (link_dest) {
1529 /* Resort to --copy-dest behavior. */
1530 } else
1531 #endif
1532 if (!copy_dest)
1533 goto cleanup;
1534 itemizing = 0;
1535 code = FNONE;
1536 } else if (j >= 0)
1537 statret = 1;
1538 }
1539 if (DEBUG_GTE(GENR, 1)) {
1540 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1541 fname, (int)file->mode,
1542 (long)major(rdev), (long)minor(rdev));
1543 }
1544 if (atomic_create(file, fname, NULL, rdev, &sx, del_for_flag)) {
1545 set_file_attrs(fname, file, NULL, NULL, 0);
1546 if (itemizing) {
1547 itemize(fname, file, ndx, statret, &sx,
1548 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1549 }
1550 if (code != FNONE && INFO_GTE(NAME, 1))
1551 rprintf(code, "%s\n", fname);
1552 #ifdef SUPPORT_HARD_LINKS
1553 if (preserve_hard_links && F_IS_HLINKED(file))
1554 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1555 #endif
1556 if (remove_source_files == 1)
1557 goto return_with_success;
1558 }
1559 goto cleanup;
1560 }
1561
1562 if (!S_ISREG(file->mode)) {
1563 if (solo_file)
1564 fname = f_name(file, NULL);
1565 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1566 goto cleanup;
1567 }
1568
1569 if (max_size > 0 && F_LENGTH(file) > max_size) {
1570 if (INFO_GTE(SKIP, 1)) {
1571 if (solo_file)
1572 fname = f_name(file, NULL);
1573 rprintf(FINFO, "%s is over max-size\n", fname);
1574 }
1575 goto cleanup;
1576 }
1577 if (min_size > 0 && F_LENGTH(file) < min_size) {
1578 if (INFO_GTE(SKIP, 1)) {
1579 if (solo_file)
1580 fname = f_name(file, NULL);
1581 rprintf(FINFO, "%s is under min-size\n", fname);
1582 }
1583 goto cleanup;
1584 }
1585
1586 if (update_only > 0 && statret == 0
1587 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1588 if (INFO_GTE(SKIP, 1))
1589 rprintf(FINFO, "%s is newer\n", fname);
1590 #ifdef SUPPORT_HARD_LINKS
1591 if (F_IS_HLINKED(file))
1592 handle_skipped_hlink(file, itemizing, code, f_out);
1593 #endif
1594 goto cleanup;
1595 }
1596
1597 fnamecmp_type = FNAMECMP_FNAME;
1598
1599 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1600 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1601 goto cleanup;
1602 statret = -1;
1603 stat_errno = ENOENT;
1604 }
1605
1606 if (statret != 0 && basis_dir[0] != NULL) {
1607 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1608 itemizing, code);
1609 if (j == -2) {
1610 if (remove_source_files == 1)
1611 goto return_with_success;
1612 goto cleanup;
1613 }
1614 if (j >= 0) {
1615 fnamecmp = fnamecmpbuf;
1616 fnamecmp_type = j;
1617 statret = 0;
1618 }
1619 }
1620
1621 real_ret = statret;
1622 real_sx = sx;
1623
1624 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1625 && link_stat(partialptr, &partial_st, 0) == 0
1626 && S_ISREG(partial_st.st_mode)) {
1627 if (statret != 0)
1628 goto prepare_to_open;
1629 } else
1630 partialptr = NULL;
1631
1632 if (statret != 0 && fuzzy_dirlist) {
1633 int j = find_fuzzy(file, fuzzy_dirlist);
1634 if (j >= 0) {
1635 fuzzy_file = fuzzy_dirlist->files[j];
1636 f_name(fuzzy_file, fnamecmpbuf);
1637 if (DEBUG_GTE(FUZZY, 1)) {
1638 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1639 fname, fnamecmpbuf);
1640 }
1641 sx.st.st_size = F_LENGTH(fuzzy_file);
1642 statret = 0;
1643 fnamecmp = fnamecmpbuf;
1644 fnamecmp_type = FNAMECMP_FUZZY;
1645 }
1646 }
1647
1648 if (statret != 0) {
1649 #ifdef SUPPORT_HARD_LINKS
1650 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1651 cur_flist->in_progress++;
1652 goto cleanup;
1653 }
1654 #endif
1655 if (stat_errno == ENOENT)
1656 goto notify_others;
1657 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1658 full_fname(fname));
1659 goto cleanup;
1660 }
1661
1662 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1663 ;
1664 else if (fnamecmp_type == FNAMECMP_FUZZY)
1665 ;
1666 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1667 if (partialptr) {
1668 do_unlink(partialptr);
1669 handle_partial_dir(partialptr, PDIR_DELETE);
1670 }
1671 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1672 if (itemizing)
1673 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1674 #ifdef SUPPORT_HARD_LINKS
1675 if (preserve_hard_links && F_IS_HLINKED(file))
1676 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1677 #endif
1678 if (remove_source_files != 1)
1679 goto cleanup;
1680 return_with_success:
1681 if (!dry_run)
1682 send_msg_int(MSG_SUCCESS, ndx);
1683 goto cleanup;
1684 }
1685
1686 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1687 #ifdef SUPPORT_HARD_LINKS
1688 if (F_IS_HLINKED(file))
1689 handle_skipped_hlink(file, itemizing, code, f_out);
1690 #endif
1691 goto cleanup;
1692 }
1693
1694 prepare_to_open:
1695 if (partialptr) {
1696 sx.st = partial_st;
1697 fnamecmp = partialptr;
1698 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1699 statret = 0;
1700 }
1701
1702 if (!do_xfers)
1703 goto notify_others;
1704
1705 if (read_batch || whole_file) {
1706 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1707 if (!(backupptr = get_backup_name(fname)))
1708 goto cleanup;
1709 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1710 goto pretend_missing;
1711 if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1712 unmake_file(back_file);
1713 back_file = NULL;
1714 goto cleanup;
1715 }
1716 }
1717 goto notify_others;
1718 }
1719
1720 if (fuzzy_dirlist) {
1721 int j = flist_find(fuzzy_dirlist, file);
1722 if (j >= 0) /* don't use changing file as future fuzzy basis */
1723 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1724 }
1725
1726 /* open the file */
1727 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1728 rsyserr(FERROR, errno, "failed to open %s, continuing",
1729 full_fname(fnamecmp));
1730 pretend_missing:
1731 /* pretend the file didn't exist */
1732 #ifdef SUPPORT_HARD_LINKS
1733 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1734 cur_flist->in_progress++;
1735 goto cleanup;
1736 }
1737 #endif
1738 statret = real_ret = -1;
1739 goto notify_others;
1740 }
1741
1742 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1743 if (!(backupptr = get_backup_name(fname))) {
1744 close(fd);
1745 goto cleanup;
1746 }
1747 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1748 close(fd);
1749 goto pretend_missing;
1750 }
1751 if (robust_unlink(backupptr) && errno != ENOENT) {
1752 rsyserr(FERROR_XFER, errno, "unlink %s",
1753 full_fname(backupptr));
1754 unmake_file(back_file);
1755 back_file = NULL;
1756 close(fd);
1757 goto cleanup;
1758 }
1759 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1760 rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1761 unmake_file(back_file);
1762 back_file = NULL;
1763 close(fd);
1764 goto cleanup;
1765 }
1766 fnamecmp_type = FNAMECMP_BACKUP;
1767 }
1768
1769 if (DEBUG_GTE(DELTASUM, 3)) {
1770 rprintf(FINFO, "gen mapped %s of size %s\n",
1771 fnamecmp, big_num(sx.st.st_size));
1772 }
1773
1774 if (DEBUG_GTE(DELTASUM, 2))
1775 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1776
1777 notify_others:
1778 if (remove_source_files && !delay_updates && !phase && !dry_run)
1779 increment_active_files(ndx, itemizing, code);
1780 if (inc_recurse && !dry_run)
1781 cur_flist->in_progress++;
1782 #ifdef SUPPORT_HARD_LINKS
1783 if (preserve_hard_links && F_IS_HLINKED(file))
1784 file->flags |= FLAG_FILE_SENT;
1785 #endif
1786 write_ndx(f_out, ndx);
1787 if (itemizing) {
1788 int iflags = ITEM_TRANSFER;
1789 if (always_checksum > 0)
1790 iflags |= ITEM_REPORT_CHANGE;
1791 if (fnamecmp_type != FNAMECMP_FNAME)
1792 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1793 if (fnamecmp_type == FNAMECMP_FUZZY)
1794 iflags |= ITEM_XNAME_FOLLOWS;
1795 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1796 fuzzy_file ? fuzzy_file->basename : NULL);
1797 #ifdef SUPPORT_ACLS
1798 if (preserve_acls)
1799 free_acl(&real_sx);
1800 #endif
1801 #ifdef SUPPORT_XATTRS
1802 if (preserve_xattrs)
1803 free_xattr(&real_sx);
1804 #endif
1805 }
1806
1807 if (!do_xfers) {
1808 #ifdef SUPPORT_HARD_LINKS
1809 if (preserve_hard_links && F_IS_HLINKED(file))
1810 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1811 #endif
1812 goto cleanup;
1813 }
1814 if (read_batch)
1815 goto cleanup;
1816
1817 if (statret != 0 || whole_file)
1818 write_sum_head(f_out, NULL);
1819 else if (sx.st.st_size <= 0) {
1820 write_sum_head(f_out, NULL);
1821 close(fd);
1822 } else {
1823 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1824 rprintf(FWARNING,
1825 "WARNING: file is too large for checksum sending: %s\n",
1826 fnamecmp);
1827 write_sum_head(f_out, NULL);
1828 }
1829 close(fd);
1830 }
1831
1832 cleanup:
1833 if (back_file) {
1834 int save_preserve_xattrs = preserve_xattrs;
1835 if (f_copy >= 0)
1836 close(f_copy);
1837 #ifdef SUPPORT_XATTRS
1838 if (preserve_xattrs) {
1839 copy_xattrs(fname, backupptr);
1840 preserve_xattrs = 0;
1841 }
1842 #endif
1843 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1844 preserve_xattrs = save_preserve_xattrs;
1845 if (INFO_GTE(BACKUP, 1)) {
1846 rprintf(FINFO, "backed up %s to %s\n",
1847 fname, backupptr);
1848 }
1849 unmake_file(back_file);
1850 }
1851
1852 #ifdef SUPPORT_ACLS
1853 if (preserve_acls)
1854 free_acl(&sx);
1855 #endif
1856 #ifdef SUPPORT_XATTRS
1857 if (preserve_xattrs)
1858 free_xattr(&sx);
1859 #endif
1860 return;
1861 }
1862
1863 /* If we are replacing an existing hard link, symlink, device, or special file,
1864 * create a temp-name item and rename it into place. Only a symlink or hard
1865 * link puts a non-NULL value into the lnk arg. Only a device puts a non-0
1866 * value into the rdev arg. Specify 0 for the del_for_flag if there is not a
1867 * file to replace. This returns 1 on success and 0 on failure. */
1868 int atomic_create(struct file_struct *file, char *fname, const char *lnk,
1869 dev_t rdev, stat_x *sxp, int del_for_flag)
1870 {
1871 char tmpname[MAXPATHLEN];
1872 const char *create_name;
1873 int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1874
1875 if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1876 skip_atomic = 1;
1877 else
1878 skip_atomic = 0;
1879
1880 if (del_for_flag) {
1881 if (make_backups > 0 && !dir_in_the_way) {
1882 if (!make_backup(fname, skip_atomic))
1883 return 0;
1884 } else if (skip_atomic) {
1885 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1886 if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1887 return 0;
1888 }
1889 }
1890
1891 create_name = skip_atomic ? fname : tmpname;
1892
1893 if (lnk) {
1894 #ifdef SUPPORT_LINKS
1895 if (S_ISLNK(file->mode)
1896 #ifdef SUPPORT_HARD_LINKS /* The first symlink in a hard-linked cluster is always created. */
1897 && (!F_IS_HLINKED(file) || file->flags & FLAG_HLINK_FIRST)
1898 #endif
1899 ) {
1900 if (do_symlink(lnk, create_name) < 0) {
1901 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1902 full_fname(create_name), lnk);
1903 return 0;
1904 }
1905 } else
1906 #endif
1907 #ifdef SUPPORT_HARD_LINKS
1908 if (!hard_link_one(file, create_name, lnk, 0))
1909 return 0;
1910 #endif
1911 } else {
1912 if (do_mknod(create_name, file->mode, rdev) < 0) {
1913 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1914 full_fname(create_name));
1915 return 0;
1916 }
1917 }
1918
1919 if (!skip_atomic) {
1920 if (do_rename(tmpname, fname) < 0) {
1921 rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
1922 full_fname(tmpname), full_fname(fname));
1923 do_unlink(tmpname);
1924 return 0;
1925 }
1926 }
1927
1928 return 1;
1929 }
1930
1931 #ifdef SUPPORT_HARD_LINKS
1932 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
1933 enum logcode code, int f_out)
1934 {
1935 char fbuf[MAXPATHLEN];
1936 int new_last_ndx;
1937 struct file_list *save_flist = cur_flist;
1938
1939 /* If we skip the last item in a chain of links and there was a
1940 * prior non-skipped hard-link waiting to finish, finish it now. */
1941 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
1942 return;
1943
1944 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
1945 cur_flist->in_progress--; /* undo prior increment */
1946 f_name(file, fbuf);
1947 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
1948
1949 cur_flist = save_flist;
1950 }
1951 #endif
1952
1953 static void touch_up_dirs(struct file_list *flist, int ndx)
1954 {
1955 static int counter = 0;
1956 struct file_struct *file;
1957 char *fname;
1958 BOOL fix_dir_perms;
1959 int i, start, end;
1960
1961 if (ndx < 0) {
1962 start = 0;
1963 end = flist->used - 1;
1964 } else
1965 start = end = ndx;
1966
1967 /* Fix any directory permissions that were modified during the
1968 * transfer and/or re-set any tweaked modified-time values. */
1969 for (i = start; i <= end; i++, counter++) {
1970 file = flist->files[i];
1971 if (!S_ISDIR(file->mode)
1972 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1973 continue;
1974 if (DEBUG_GTE(TIME, 2)) {
1975 fname = f_name(file, NULL);
1976 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
1977 NS(fname), i);
1978 }
1979 /* Be sure not to retouch permissions with --fake-super. */
1980 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
1981 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
1982 || !(need_retouch_dir_times || fix_dir_perms))
1983 continue;
1984 fname = f_name(file, NULL);
1985 if (fix_dir_perms)
1986 do_chmod(fname, file->mode);
1987 if (need_retouch_dir_times) {
1988 STRUCT_STAT st;
1989 if (link_stat(fname, &st, 0) == 0
1990 && cmp_time(st.st_mtime, file->modtime) != 0)
1991 set_modtime(fname, file->modtime, F_MOD_NSEC(file), file->mode);
1992 }
1993 if (counter >= loopchk_limit) {
1994 if (allowed_lull)
1995 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
1996 else
1997 maybe_flush_socket(0);
1998 counter = 0;
1999 }
2000 }
2001 }
2002
2003 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2004 {
2005 struct file_struct *file;
2006 struct file_list *flist;
2007 char fbuf[MAXPATHLEN];
2008 int ndx;
2009
2010 while (1) {
2011 #ifdef SUPPORT_HARD_LINKS
2012 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2013 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2014 file = flist->files[ndx - flist->ndx_start];
2015 assert(file->flags & FLAG_HLINKED);
2016 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2017 flist->in_progress--;
2018 continue;
2019 }
2020 #endif
2021
2022 if (check_redo && (ndx = get_redo_num()) != -1) {
2023 csum_length = SUM_LENGTH;
2024 max_size = -max_size;
2025 min_size = -min_size;
2026 ignore_existing = -ignore_existing;
2027 ignore_non_existing = -ignore_non_existing;
2028 update_only = -update_only;
2029 always_checksum = -always_checksum;
2030 size_only = -size_only;
2031 append_mode = -append_mode;
2032 make_backups = -make_backups; /* avoid dup backup w/inplace */
2033 ignore_times++;
2034
2035 flist = cur_flist;
2036 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2037
2038 file = cur_flist->files[ndx - cur_flist->ndx_start];
2039 if (solo_file)
2040 strlcpy(fbuf, solo_file, sizeof fbuf);
2041 else
2042 f_name(file, fbuf);
2043 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2044 cur_flist->to_redo--;
2045
2046 cur_flist = flist;
2047
2048 csum_length = SHORT_SUM_LENGTH;
2049 max_size = -max_size;
2050 min_size = -min_size;
2051 ignore_existing = -ignore_existing;
2052 ignore_non_existing = -ignore_non_existing;
2053 update_only = -update_only;
2054 always_checksum = -always_checksum;
2055 size_only = -size_only;
2056 append_mode = -append_mode;
2057 make_backups = -make_backups;
2058 ignore_times--;
2059 continue;
2060 }
2061
2062 if (cur_flist == first_flist)
2063 break;
2064
2065 /* We only get here if inc_recurse is enabled. */
2066 if (first_flist->in_progress || first_flist->to_redo)
2067 break;
2068
2069 write_ndx(sock_f_out, NDX_DONE);
2070 if (!read_batch && !flist_eof) {
2071 int old_total = 0;
2072 for (flist = first_flist; flist != cur_flist; flist = flist->next)
2073 old_total += flist->used;
2074 maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2075 }
2076
2077 if (delete_during == 2 || !dir_tweaking) {
2078 /* Skip directory touch-up. */
2079 } else if (first_flist->parent_ndx >= 0)
2080 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2081
2082 flist_free(first_flist); /* updates first_flist */
2083 }
2084 }
2085
2086 void generate_files(int f_out, const char *local_name)
2087 {
2088 int i, ndx, next_loopchk = 0;
2089 char fbuf[MAXPATHLEN];
2090 int itemizing;
2091 enum logcode code;
2092 int save_info_flist = info_levels[INFO_FLIST];
2093 int save_info_progress = info_levels[INFO_PROGRESS];
2094
2095 if (protocol_version >= 29) {
2096 itemizing = 1;
2097 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2098 code = logfile_format_has_i ? FNONE : FLOG;
2099 } else if (am_daemon) {
2100 itemizing = logfile_format_has_i && do_xfers;
2101 maybe_ATTRS_REPORT = ATTRS_REPORT;
2102 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2103 } else if (!am_server) {
2104 itemizing = stdout_format_has_i;
2105 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2106 code = itemizing ? FNONE : FINFO;
2107 } else {
2108 itemizing = 0;
2109 maybe_ATTRS_REPORT = ATTRS_REPORT;
2110 code = FINFO;
2111 }
2112 solo_file = local_name;
2113 dir_tweaking = !(list_only || solo_file || dry_run);
2114 need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2115 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2116 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2117 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2118 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2119
2120 if (DEBUG_GTE(GENR, 1))
2121 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2122
2123 if (delete_before && !solo_file && cur_flist->used > 0)
2124 do_delete_pass();
2125 if (delete_during == 2) {
2126 deldelay_size = BIGPATHBUFLEN * 4;
2127 deldelay_buf = new_array(char, deldelay_size);
2128 if (!deldelay_buf)
2129 out_of_memory("delete-delay");
2130 }
2131 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2132
2133 if (append_mode > 0 || whole_file < 0)
2134 whole_file = 0;
2135 if (DEBUG_GTE(FLIST, 1)) {
2136 rprintf(FINFO, "delta-transmission %s\n",
2137 whole_file
2138 ? "disabled for local transfer or --whole-file"
2139 : "enabled");
2140 }
2141
2142 dflt_perms = (ACCESSPERMS & ~orig_umask);
2143
2144 do {
2145 #ifdef SUPPORT_HARD_LINKS
2146 if (preserve_hard_links && inc_recurse) {
2147 while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2148 wait_for_receiver();
2149 }
2150 #endif
2151
2152 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2153 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2154 if (solo_file)
2155 strlcpy(fbuf, solo_file, sizeof fbuf);
2156 else
2157 f_name(fp, fbuf);
2158 ndx = cur_flist->ndx_start - 1;
2159 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2160 if (delete_during && dry_run < 2 && !list_only
2161 && !(fp->flags & FLAG_MISSING_DIR)) {
2162 if (fp->flags & FLAG_CONTENT_DIR) {
2163 dev_t dirdev;
2164 if (one_file_system) {
2165 uint32 *devp = F_DIR_DEV_P(fp);
2166 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2167 } else
2168 dirdev = MAKEDEV(0, 0);
2169 delete_in_dir(fbuf, fp, &dirdev);
2170 } else
2171 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2172 }
2173 }
2174 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2175 struct file_struct *file = cur_flist->sorted[i];
2176
2177 if (!F_IS_ACTIVE(file))
2178 continue;
2179
2180 if (unsort_ndx)
2181 ndx = F_NDX(file);
2182 else
2183 ndx = i + cur_flist->ndx_start;
2184
2185 if (solo_file)
2186 strlcpy(fbuf, solo_file, sizeof fbuf);
2187 else
2188 f_name(file, fbuf);
2189 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2190
2191 check_for_finished_files(itemizing, code, 0);
2192
2193 if (i + cur_flist->ndx_start >= next_loopchk) {
2194 if (allowed_lull)
2195 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2196 else
2197 maybe_flush_socket(0);
2198 next_loopchk += loopchk_limit;
2199 }
2200 }
2201
2202 if (!inc_recurse) {
2203 write_ndx(f_out, NDX_DONE);
2204 break;
2205 }
2206
2207 while (1) {
2208 check_for_finished_files(itemizing, code, 1);
2209 if (cur_flist->next || flist_eof)
2210 break;
2211 wait_for_receiver();
2212 }
2213 } while ((cur_flist = cur_flist->next) != NULL);
2214
2215 if (delete_during)
2216 delete_in_dir(NULL, NULL, &dev_zero);
2217 phase++;
2218 if (DEBUG_GTE(GENR, 1))
2219 rprintf(FINFO, "generate_files phase=%d\n", phase);
2220
2221 while (1) {
2222 check_for_finished_files(itemizing, code, 1);
2223 if (msgdone_cnt)
2224 break;
2225 wait_for_receiver();
2226 }
2227
2228 phase++;
2229 if (DEBUG_GTE(GENR, 1))
2230 rprintf(FINFO, "generate_files phase=%d\n", phase);
2231
2232 write_ndx(f_out, NDX_DONE);
2233
2234 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2235 if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2236 write_ndx(f_out, NDX_DONE);
2237
2238 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2239 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2240 write_del_stats(f_out);
2241 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2242 write_ndx(f_out, NDX_DONE);
2243 }
2244
2245 /* Read MSG_DONE for the redo phase (and any prior messages). */
2246 while (1) {
2247 check_for_finished_files(itemizing, code, 0);
2248 if (msgdone_cnt > 1)
2249 break;
2250 wait_for_receiver();
2251 }
2252
2253 if (protocol_version >= 29) {
2254 phase++;
2255 if (DEBUG_GTE(GENR, 1))
2256 rprintf(FINFO, "generate_files phase=%d\n", phase);
2257 if (!EARLY_DELAY_DONE_MSG()) {
2258 write_ndx(f_out, NDX_DONE);
2259 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2260 write_ndx(f_out, NDX_DONE);
2261 }
2262 /* Read MSG_DONE for delay-updates phase & prior messages. */
2263 while (msgdone_cnt == 2)
2264 wait_for_receiver();
2265 }
2266
2267 info_levels[INFO_FLIST] = save_info_flist;
2268 info_levels[INFO_PROGRESS] = save_info_progress;
2269
2270 if (delete_during == 2)
2271 do_delayed_deletions(fbuf);
2272 if (delete_after && !solo_file && file_total > 0)
2273 do_delete_pass();
2274
2275 if (max_delete >= 0 && skipped_deletes) {
2276 rprintf(FWARNING,
2277 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2278 skipped_deletes);
2279 io_error |= IOERR_DEL_LIMIT;
2280 }
2281
2282 if (protocol_version >= 31) {
2283 if (!EARLY_DELETE_DONE_MSG()) {
2284 if (INFO_GTE(STATS, 2) || read_batch)
2285 write_del_stats(f_out);
2286 write_ndx(f_out, NDX_DONE);
2287 }
2288
2289 /* Read MSG_DONE for late-delete phase & prior messages. */
2290 while (msgdone_cnt == 3)
2291 wait_for_receiver();
2292 }
2293
2294 if ((need_retouch_dir_perms || need_retouch_dir_times)
2295 && dir_tweaking && (!inc_recurse || delete_during == 2))
2296 touch_up_dirs(dir_flist, -1);
2297
2298 if (DEBUG_GTE(GENR, 1))
2299 rprintf(FINFO, "generate_files finished\n");
2300 }