Cast file->mode to an int when printing it via %o.
[rsync/rsync.git] / generator.c
... / ...
CommitLineData
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, 2004, 2005, 2006 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 2 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, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
22 */
23
24#include "rsync.h"
25
26extern int verbose;
27extern int dry_run;
28extern int do_xfers;
29extern int log_format_has_i;
30extern int daemon_log_format_has_i;
31extern int am_root;
32extern int am_server;
33extern int am_daemon;
34extern int do_progress;
35extern int recurse;
36extern int relative_paths;
37extern int implied_dirs;
38extern int keep_dirlinks;
39extern int preserve_links;
40extern int preserve_devices;
41extern int preserve_specials;
42extern int preserve_hard_links;
43extern int preserve_perms;
44extern int preserve_uid;
45extern int preserve_gid;
46extern int preserve_times;
47extern int omit_dir_times;
48extern int delete_mode;
49extern int delete_before;
50extern int delete_during;
51extern int delete_after;
52extern int module_id;
53extern int ignore_errors;
54extern int remove_sent_files;
55extern int delay_updates;
56extern int update_only;
57extern int ignore_existing;
58extern int ignore_non_existing;
59extern int inplace;
60extern int append_mode;
61extern int make_backups;
62extern int csum_length;
63extern int ignore_times;
64extern int size_only;
65extern OFF_T max_size;
66extern OFF_T min_size;
67extern int io_error;
68extern int allowed_lull;
69extern int sock_f_out;
70extern int ignore_timeout;
71extern int protocol_version;
72extern int fuzzy_basis;
73extern int always_checksum;
74extern int checksum_len;
75extern char *partial_dir;
76extern char *basis_dir[];
77extern int compare_dest;
78extern int copy_dest;
79extern int link_dest;
80extern int whole_file;
81extern int list_only;
82extern int read_batch;
83extern int safe_symlinks;
84extern long block_size; /* "long" because popt can't set an int32. */
85extern int max_delete;
86extern int force_delete;
87extern int one_file_system;
88extern struct stats stats;
89extern dev_t filesystem_dev;
90extern char *backup_dir;
91extern char *backup_suffix;
92extern int backup_suffix_len;
93extern struct file_list *the_file_list;
94extern struct filter_list_struct server_filter_list;
95
96static int deletion_count = 0; /* used to implement --max-delete */
97
98/* For calling delete_file() */
99#define DEL_FORCE_RECURSE (1<<1) /* recurse even w/o --force */
100#define DEL_TERSE (1<<3)
101
102
103static int is_backup_file(char *fn)
104{
105 int k = strlen(fn) - backup_suffix_len;
106 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
107}
108
109
110/* Delete a file or directory. If DEL_FORCE_RECURSE is set in the flags, or if
111 * force_delete is set, this will delete recursively.
112 *
113 * Note that fname must point to a MAXPATHLEN buffer if the mode indicates it's
114 * a directory! (The buffer is used for recursion, but returned unchanged.)
115 */
116static int delete_item(char *fname, int mode, int flags)
117{
118 struct file_list *dirlist;
119 int j, dlen, zap_dir, ok;
120 unsigned remainder;
121 void *save_filters;
122 char *p;
123
124 if (!S_ISDIR(mode)) {
125 if (max_delete && ++deletion_count > max_delete)
126 return 0;
127 if (make_backups && (backup_dir || !is_backup_file(fname)))
128 ok = make_backup(fname);
129 else
130 ok = robust_unlink(fname) == 0;
131 if (ok) {
132 if (!(flags & DEL_TERSE))
133 log_delete(fname, mode);
134 return 0;
135 }
136 if (errno == ENOENT) {
137 deletion_count--;
138 return 0;
139 }
140 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
141 full_fname(fname));
142 return -1;
143 }
144
145 zap_dir = flags & DEL_FORCE_RECURSE || force_delete;
146 if ((max_delete && ++deletion_count > max_delete)
147 || (dry_run && zap_dir)) {
148 ok = 0;
149 errno = ENOTEMPTY;
150 } else if (make_backups && !backup_dir && !is_backup_file(fname)
151 && !(flags & DEL_FORCE_RECURSE))
152 ok = make_backup(fname);
153 else
154 ok = do_rmdir(fname) == 0;
155 if (ok) {
156 if (!(flags & DEL_TERSE))
157 log_delete(fname, mode);
158 return 0;
159 }
160 if (errno == ENOENT) {
161 deletion_count--;
162 return 0;
163 }
164 if (!zap_dir) {
165 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
166 full_fname(fname));
167 return -1;
168 }
169 flags |= DEL_FORCE_RECURSE; /* mark subdir dels as not "in the way" */
170 deletion_count--;
171
172 dlen = strlen(fname);
173 save_filters = push_local_filters(fname, dlen);
174
175 dirlist = get_dirlist(fname, dlen, 0);
176
177 p = fname + dlen;
178 if (dlen != 1 || *fname != '/')
179 *p++ = '/';
180 remainder = MAXPATHLEN - (p - fname);
181
182 for (j = dirlist->count; j--; ) {
183 struct file_struct *fp = dirlist->files[j];
184
185 if (fp->flags & FLAG_MOUNT_POINT)
186 continue;
187
188 strlcpy(p, fp->basename, remainder);
189 delete_item(fname, fp->mode, flags & ~DEL_TERSE);
190 }
191 flist_free(dirlist);
192
193 fname[dlen] = '\0';
194
195 pop_local_filters(save_filters);
196
197 if (max_delete && ++deletion_count > max_delete)
198 return 0;
199
200 if (do_rmdir(fname) == 0) {
201 if (!(flags & DEL_TERSE))
202 log_delete(fname, mode);
203 } else if (errno != ENOTEMPTY && errno != EEXIST && errno != ENOENT) {
204 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
205 full_fname(fname));
206 return -1;
207 }
208
209 return 0;
210}
211
212
213/* This function is used to implement per-directory deletion, and is used by
214 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
215 * MAXPATHLEN buffer with the name of the directory in it (the functions we
216 * call will append names onto the end, but the old dir value will be restored
217 * on exit). */
218static void delete_in_dir(struct file_list *flist, char *fbuf,
219 struct file_struct *file, STRUCT_STAT *stp)
220{
221 static int min_depth = MAXPATHLEN, cur_depth = -1;
222 static void *filt_array[MAXPATHLEN/2+1];
223 static int already_warned = 0;
224 struct file_list *dirlist;
225 char delbuf[MAXPATHLEN];
226 int dlen, i;
227
228 if (!flist) {
229 while (cur_depth >= min_depth)
230 pop_local_filters(filt_array[cur_depth--]);
231 min_depth = MAXPATHLEN;
232 cur_depth = -1;
233 return;
234 }
235
236 if (verbose > 2)
237 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
238
239 if (allowed_lull)
240 maybe_send_keepalive();
241
242 if (file->dir.depth >= MAXPATHLEN/2+1)
243 return; /* Impossible... */
244
245 if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
246 if (already_warned)
247 return;
248 rprintf(FINFO,
249 "IO error encountered -- skipping file deletion\n");
250 already_warned = 1;
251 return;
252 }
253
254 while (cur_depth >= file->dir.depth && cur_depth >= min_depth)
255 pop_local_filters(filt_array[cur_depth--]);
256 cur_depth = file->dir.depth;
257 if (min_depth > cur_depth)
258 min_depth = cur_depth;
259 dlen = strlen(fbuf);
260 filt_array[cur_depth] = push_local_filters(fbuf, dlen);
261
262 if (one_file_system) {
263 if (file->flags & FLAG_TOP_DIR)
264 filesystem_dev = stp->st_dev;
265 else if (filesystem_dev != stp->st_dev)
266 return;
267 }
268
269 dirlist = get_dirlist(fbuf, dlen, 0);
270
271 /* If an item in dirlist is not found in flist, delete it
272 * from the filesystem. */
273 for (i = dirlist->count; i--; ) {
274 struct file_struct *fp = dirlist->files[i];
275 if (!fp->basename || fp->flags & FLAG_MOUNT_POINT)
276 continue;
277 if (flist_find(flist, fp) < 0) {
278 f_name(fp, delbuf);
279 delete_item(delbuf, fp->mode, DEL_FORCE_RECURSE);
280 }
281 }
282
283 flist_free(dirlist);
284}
285
286/* This deletes any files on the receiving side that are not present on the
287 * sending side. This is used by --delete-before and --delete-after. */
288static void do_delete_pass(struct file_list *flist)
289{
290 char fbuf[MAXPATHLEN];
291 STRUCT_STAT st;
292 int j;
293
294 if (dry_run > 1 /* destination doesn't exist yet */
295 || list_only)
296 return;
297
298 for (j = 0; j < flist->count; j++) {
299 struct file_struct *file = flist->files[j];
300
301 if (!(file->flags & FLAG_DEL_HERE))
302 continue;
303
304 f_name(file, fbuf);
305 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
306 rprintf(FINFO, "deleting in %s\n", fbuf);
307
308 if (link_stat(fbuf, &st, keep_dirlinks) < 0
309 || !S_ISDIR(st.st_mode))
310 continue;
311
312 delete_in_dir(flist, fbuf, file, &st);
313 }
314 delete_in_dir(NULL, NULL, NULL, NULL);
315
316 if (do_progress && !am_server)
317 rprintf(FINFO, " \r");
318}
319
320int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
321{
322 if (preserve_perms
323 && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS))
324 return 0;
325
326 if (am_root && preserve_uid && st->st_uid != file->uid)
327 return 0;
328
329 if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid)
330 return 0;
331
332 return 1;
333}
334
335void itemize(struct file_struct *file, int ndx, int statret, STRUCT_STAT *st,
336 int32 iflags, uchar fnamecmp_type, char *xname)
337{
338 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
339 int keep_time = !preserve_times ? 0
340 : S_ISDIR(file->mode) ? !omit_dir_times
341 : !S_ISLNK(file->mode);
342
343 if (S_ISREG(file->mode) && file->length != st->st_size)
344 iflags |= ITEM_REPORT_SIZE;
345 if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
346 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
347 || (keep_time && cmp_time(file->modtime, st->st_mtime) != 0))
348 iflags |= ITEM_REPORT_TIME;
349 if ((file->mode & CHMOD_BITS) != (st->st_mode & CHMOD_BITS))
350 iflags |= ITEM_REPORT_PERMS;
351 if (preserve_uid && am_root && file->uid != st->st_uid)
352 iflags |= ITEM_REPORT_OWNER;
353 if (preserve_gid && file->gid != GID_NONE
354 && st->st_gid != file->gid)
355 iflags |= ITEM_REPORT_GROUP;
356 } else
357 iflags |= ITEM_IS_NEW;
358
359 iflags &= 0xffff;
360 if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
361 || log_format_has_i > 1 || (xname && *xname)) && !read_batch) {
362 if (protocol_version >= 29) {
363 if (ndx >= 0)
364 write_int(sock_f_out, ndx);
365 write_shortint(sock_f_out, iflags);
366 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
367 write_byte(sock_f_out, fnamecmp_type);
368 if (iflags & ITEM_XNAME_FOLLOWS)
369 write_vstring(sock_f_out, xname, strlen(xname));
370 } else if (ndx >= 0)
371 log_item(file, &stats, iflags, xname);
372 }
373}
374
375
376/* Perform our quick-check heuristic for determining if a file is unchanged. */
377int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
378{
379 if (st->st_size != file->length)
380 return 0;
381
382 /* if always checksum is set then we use the checksum instead
383 of the file time to determine whether to sync */
384 if (always_checksum && S_ISREG(st->st_mode)) {
385 char sum[MD4_SUM_LENGTH];
386 file_checksum(fn, sum, st->st_size);
387 return memcmp(sum, file->u.sum, checksum_len) == 0;
388 }
389
390 if (size_only)
391 return 1;
392
393 if (ignore_times)
394 return 0;
395
396 return cmp_time(st->st_mtime, file->modtime) == 0;
397}
398
399
400/*
401 * set (initialize) the size entries in the per-file sum_struct
402 * calculating dynamic block and checksum sizes.
403 *
404 * This is only called from generate_and_send_sums() but is a separate
405 * function to encapsulate the logic.
406 *
407 * The block size is a rounded square root of file length.
408 *
409 * The checksum size is determined according to:
410 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
411 * provided by Donovan Baarda which gives a probability of rsync
412 * algorithm corrupting data and falling back using the whole md4
413 * checksums.
414 *
415 * This might be made one of several selectable heuristics.
416 */
417static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
418{
419 int32 blength;
420 int s2length;
421
422 if (block_size)
423 blength = block_size;
424 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
425 blength = BLOCK_SIZE;
426 else {
427 int32 c;
428 int64 l;
429 int cnt;
430 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
431 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
432 blength = MAX_BLOCK_SIZE;
433 else {
434 blength = 0;
435 do {
436 blength |= c;
437 if (len < (int64)blength * blength)
438 blength &= ~c;
439 c >>= 1;
440 } while (c >= 8); /* round to multiple of 8 */
441 blength = MAX(blength, BLOCK_SIZE);
442 }
443 }
444
445 if (protocol_version < 27) {
446 s2length = csum_length;
447 } else if (csum_length == SUM_LENGTH) {
448 s2length = SUM_LENGTH;
449 } else {
450 int32 c;
451 int64 l;
452 int b = BLOCKSUM_BIAS;
453 for (l = len; l >>= 1; b += 2) {}
454 for (c = blength; c >>= 1 && b; b--) {}
455 /* add a bit, subtract rollsum, round up. */
456 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
457 s2length = MAX(s2length, csum_length);
458 s2length = MIN(s2length, SUM_LENGTH);
459 }
460
461 sum->flength = len;
462 sum->blength = blength;
463 sum->s2length = s2length;
464 sum->remainder = len % blength;
465 sum->count = len / blength + (sum->remainder != 0);
466
467 if (sum->count && verbose > 2) {
468 rprintf(FINFO,
469 "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
470 (double)sum->count, (long)sum->remainder, (long)sum->blength,
471 sum->s2length, (double)sum->flength);
472 }
473}
474
475
476/*
477 * Generate and send a stream of signatures/checksums that describe a buffer
478 *
479 * Generate approximately one checksum every block_len bytes.
480 */
481static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
482{
483 int32 i;
484 struct map_struct *mapbuf;
485 struct sum_struct sum;
486 OFF_T offset = 0;
487
488 sum_sizes_sqroot(&sum, len);
489 write_sum_head(f_out, &sum);
490
491 if (append_mode > 0 && f_copy < 0)
492 return;
493
494 if (len > 0)
495 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
496 else
497 mapbuf = NULL;
498
499 for (i = 0; i < sum.count; i++) {
500 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
501 char *map = map_ptr(mapbuf, offset, n1);
502 char sum2[SUM_LENGTH];
503 uint32 sum1;
504
505 len -= n1;
506 offset += n1;
507
508 if (f_copy >= 0) {
509 full_write(f_copy, map, n1);
510 if (append_mode > 0)
511 continue;
512 }
513
514 sum1 = get_checksum1(map, n1);
515 get_checksum2(map, n1, sum2);
516
517 if (verbose > 3) {
518 rprintf(FINFO,
519 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
520 (double)i, (double)offset - n1, (long)n1,
521 (unsigned long)sum1);
522 }
523 write_int(f_out, sum1);
524 write_buf(f_out, sum2, sum.s2length);
525 }
526
527 if (mapbuf)
528 unmap_file(mapbuf);
529}
530
531
532/* Try to find a filename in the same dir as "fname" with a similar name. */
533static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
534{
535 int fname_len, fname_suf_len;
536 const char *fname_suf, *fname = file->basename;
537 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
538 int j, lowest_j = -1;
539
540 fname_len = strlen(fname);
541 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
542
543 for (j = 0; j < dirlist->count; j++) {
544 struct file_struct *fp = dirlist->files[j];
545 const char *suf, *name;
546 int len, suf_len;
547 uint32 dist;
548
549 if (!S_ISREG(fp->mode) || !fp->length
550 || fp->flags & FLAG_NO_FUZZY)
551 continue;
552
553 name = fp->basename;
554
555 if (fp->length == file->length
556 && cmp_time(fp->modtime, file->modtime) == 0) {
557 if (verbose > 4) {
558 rprintf(FINFO,
559 "fuzzy size/modtime match for %s\n",
560 name);
561 }
562 return j;
563 }
564
565 len = strlen(name);
566 suf = find_filename_suffix(name, len, &suf_len);
567
568 dist = fuzzy_distance(name, len, fname, fname_len);
569 /* Add some extra weight to how well the suffixes match. */
570 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
571 * 10;
572 if (verbose > 4) {
573 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
574 name, (int)(dist>>16), (int)(dist&0xFFFF));
575 }
576 if (dist <= lowest_dist) {
577 lowest_dist = dist;
578 lowest_j = j;
579 }
580 }
581
582 return lowest_j;
583}
584
585void check_for_finished_hlinks(int itemizing, enum logcode code)
586{
587 struct file_struct *file;
588 int ndx;
589
590 while ((ndx = get_hlink_num()) != -1) {
591 if (ndx < 0 || ndx >= the_file_list->count)
592 continue;
593
594 file = the_file_list->files[ndx];
595 if (!file->link_u.links)
596 continue;
597
598 hard_link_cluster(file, ndx, itemizing, code);
599 }
600}
601
602/* This is only called for regular files. We return -2 if we've finished
603 * handling the file, -1 if no dest-linking occurred, or a non-negative
604 * value if we found an alternate basis file. */
605static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
606 char *cmpbuf, STRUCT_STAT *stp, int itemizing,
607 int maybe_ATTRS_REPORT, enum logcode code)
608{
609 int save_ignore_times = ignore_times;
610 int save_size_only = size_only;
611 int best_match = -1;
612 int match_level = 0;
613 int j = 0;
614
615 /* We can't let these send-affecting options affect our checking
616 * for identical files in the alternate basis dirs. */
617 ignore_times = size_only = 0;
618
619 do {
620 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
621 if (link_stat(cmpbuf, stp, 0) < 0 || !S_ISREG(stp->st_mode))
622 continue;
623 switch (match_level) {
624 case 0:
625 best_match = j;
626 match_level = 1;
627 /* FALL THROUGH */
628 case 1:
629 if (!unchanged_file(cmpbuf, file, stp))
630 continue;
631 best_match = j;
632 match_level = 2;
633 /* FALL THROUGH */
634 case 2:
635 if (!unchanged_attrs(file, stp))
636 continue;
637 if (always_checksum
638 && cmp_time(stp->st_mtime, file->modtime))
639 continue;
640 best_match = j;
641 match_level = 3;
642 break;
643 }
644 break;
645 } while (basis_dir[++j] != NULL);
646
647 ignore_times = save_ignore_times;
648 size_only = save_size_only;
649
650 if (!match_level)
651 return -1;
652
653 if (j != best_match) {
654 j = best_match;
655 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
656 if (link_stat(cmpbuf, stp, 0) < 0)
657 match_level = 0;
658 }
659
660#ifdef HAVE_LINK
661 if (match_level == 3 && !copy_dest) {
662 if (link_dest) {
663 if (hard_link_one(file, ndx, fname, 0, stp,
664 cmpbuf, 1,
665 itemizing && verbose > 1,
666 code) < 0)
667 goto try_a_copy;
668 if (preserve_hard_links && file->link_u.links)
669 hard_link_cluster(file, ndx, itemizing, code);
670 } else if (itemizing)
671 itemize(file, ndx, 0, stp, 0, 0, NULL);
672 if (verbose > 1 && maybe_ATTRS_REPORT) {
673 code = daemon_log_format_has_i || dry_run
674 ? FCLIENT : FINFO;
675 rprintf(code, "%s is uptodate\n", fname);
676 }
677 return -2;
678 }
679#endif
680
681 if (match_level >= 2) {
682 try_a_copy: /* Copy the file locally. */
683 if (copy_file(cmpbuf, fname, file->mode) < 0) {
684 if (verbose) {
685 rsyserr(FINFO, errno, "copy_file %s => %s",
686 full_fname(cmpbuf), fname);
687 }
688 return -1;
689 }
690 if (itemizing)
691 itemize(file, ndx, 0, stp, ITEM_LOCAL_CHANGE, 0, NULL);
692 set_file_attrs(fname, file, NULL, 0);
693 if (maybe_ATTRS_REPORT
694 && ((!itemizing && verbose && match_level == 2)
695 || (verbose > 1 && match_level == 3))) {
696 code = daemon_log_format_has_i || dry_run
697 ? FCLIENT : FINFO;
698 rprintf(code, "%s%s\n", fname,
699 match_level == 3 ? " is uptodate" : "");
700 }
701 if (preserve_hard_links && file->link_u.links)
702 hard_link_cluster(file, ndx, itemizing, code);
703 return -2;
704 }
705
706 return FNAMECMP_BASIS_DIR_LOW + j;
707}
708
709/* This is only called for non-regular files. We return -2 if we've finished
710 * handling the file, or -1 if no dest-linking occurred. */
711static int try_dests_non(struct file_struct *file, char *fname, int ndx,
712 int itemizing, int maybe_ATTRS_REPORT,
713 enum logcode code)
714{
715 char fnamebuf[MAXPATHLEN];
716 STRUCT_STAT st;
717 int i = 0;
718
719 do {
720 pathjoin(fnamebuf, MAXPATHLEN, basis_dir[i], fname);
721 if (link_stat(fnamebuf, &st, 0) < 0 || S_ISDIR(st.st_mode)
722 || !unchanged_attrs(file, &st))
723 continue;
724 if (S_ISLNK(file->mode)) {
725#ifdef SUPPORT_LINKS
726 char lnk[MAXPATHLEN];
727 int len;
728 if ((len = readlink(fnamebuf, lnk, MAXPATHLEN-1)) <= 0)
729 continue;
730 lnk[len] = '\0';
731 if (strcmp(lnk, file->u.link) != 0)
732#endif
733 continue;
734 } else if (IS_SPECIAL(file->mode)) {
735 if (!IS_SPECIAL(st.st_mode) || st.st_rdev != file->u.rdev)
736 continue;
737 } else if (IS_DEVICE(file->mode)) {
738 if (!IS_DEVICE(st.st_mode) || st.st_rdev != file->u.rdev)
739 continue;
740 } else {
741 rprintf(FERROR,
742 "internal: try_dests_non() called with invalid mode (%o)\n",
743 (int)file->mode);
744 exit_cleanup(RERR_UNSUPPORTED);
745 }
746 if (link_dest
747#ifndef CAN_HARDLINK_SYMLINK
748 && !S_ISLNK(file->mode)
749#endif
750#ifndef CAN_HARDLINK_SPECIAL
751 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
752#endif
753 ) {
754#ifdef SUPPORT_HARD_LINKS
755 if (do_link(fnamebuf, fname) < 0)
756#endif
757 {
758 rsyserr(FERROR, errno,
759 "failed to hard-link %s with %s",
760 fnamebuf, fname);
761 break;
762 }
763 if (preserve_hard_links && file->link_u.links)
764 hard_link_cluster(file, ndx, itemizing, code);
765 }
766 if (itemizing && log_format_has_i && verbose > 1) {
767 int changes = compare_dest ? 0 : ITEM_LOCAL_CHANGE
768 + (link_dest ? ITEM_XNAME_FOLLOWS : 0);
769 char *lp = link_dest ? "" : NULL;
770 itemize(file, ndx, 0, &st, changes, 0, lp);
771 }
772 if (verbose > 1 && maybe_ATTRS_REPORT) {
773 code = daemon_log_format_has_i || dry_run
774 ? FCLIENT : FINFO;
775 rprintf(code, "%s is uptodate\n", fname);
776 }
777 return -2;
778 } while (basis_dir[++i] != NULL);
779
780 return -1;
781}
782
783static int phase = 0;
784
785/* Acts on the_file_list->file's ndx'th item, whose name is fname. If a dir,
786 * make sure it exists, and has the right permissions/timestamp info. For
787 * all other non-regular files (symlinks, etc.) we create them here. For
788 * regular files that have changed, we try to find a basis file and then
789 * start sending checksums.
790 *
791 * When fname is non-null, it must point to a MAXPATHLEN buffer!
792 *
793 * Note that f_out is set to -1 when doing final directory-permission and
794 * modification-time repair. */
795static void recv_generator(char *fname, struct file_struct *file, int ndx,
796 int itemizing, int maybe_ATTRS_REPORT,
797 enum logcode code, int f_out)
798{
799 static int missing_below = -1, excluded_below = -1;
800 static char *parent_dirname = "";
801 static struct file_list *fuzzy_dirlist = NULL;
802 static int need_fuzzy_dirlist = 0;
803 struct file_struct *fuzzy_file = NULL;
804 int fd = -1, f_copy = -1;
805 STRUCT_STAT st, real_st, partial_st;
806 struct file_struct *back_file = NULL;
807 int statret, real_ret, stat_errno;
808 char *fnamecmp, *partialptr, *backupptr = NULL;
809 char fnamecmpbuf[MAXPATHLEN];
810 uchar fnamecmp_type;
811 int del_opts = DEL_TERSE | (delete_mode ? DEL_FORCE_RECURSE : 0);
812
813 if (list_only)
814 return;
815
816 if (!fname) {
817 if (fuzzy_dirlist) {
818 flist_free(fuzzy_dirlist);
819 fuzzy_dirlist = NULL;
820 }
821 if (missing_below >= 0) {
822 dry_run--;
823 missing_below = -1;
824 }
825 parent_dirname = "";
826 return;
827 }
828
829 if (verbose > 2)
830 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
831
832 if (server_filter_list.head) {
833 if (excluded_below >= 0) {
834 if (file->dir.depth > excluded_below)
835 goto skipping;
836 excluded_below = -1;
837 }
838 if (check_filter(&server_filter_list, fname,
839 S_ISDIR(file->mode)) < 0) {
840 if (S_ISDIR(file->mode))
841 excluded_below = file->dir.depth;
842 skipping:
843 if (verbose) {
844 rprintf(FINFO,
845 "skipping server-excluded file \"%s\"\n",
846 fname);
847 }
848 return;
849 }
850 }
851
852 if (missing_below >= 0 && file->dir.depth <= missing_below) {
853 dry_run--;
854 missing_below = -1;
855 }
856 if (dry_run > 1) {
857 statret = -1;
858 stat_errno = ENOENT;
859 } else {
860 char *dn = file->dirname ? file->dirname : ".";
861 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
862 if (relative_paths && !implied_dirs
863 && safe_stat(dn, &st) < 0
864 && create_directory_path(fname) < 0) {
865 rsyserr(FERROR, errno,
866 "recv_generator: mkdir %s failed",
867 full_fname(dn));
868 }
869 if (fuzzy_dirlist) {
870 flist_free(fuzzy_dirlist);
871 fuzzy_dirlist = NULL;
872 }
873 if (fuzzy_basis)
874 need_fuzzy_dirlist = 1;
875 }
876 parent_dirname = dn;
877
878 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
879 fuzzy_dirlist = get_dirlist(dn, -1, 1);
880 need_fuzzy_dirlist = 0;
881 }
882
883 statret = link_stat(fname, &st,
884 keep_dirlinks && S_ISDIR(file->mode));
885 stat_errno = errno;
886 }
887
888 if (ignore_non_existing && statret == -1 && stat_errno == ENOENT) {
889 if (verbose > 1) {
890 rprintf(FINFO, "not creating new %s \"%s\"\n",
891 S_ISDIR(file->mode) ? "directory" : "file",
892 fname);
893 }
894 return;
895 }
896
897 /* If we're not preserving permissions, change the file-list's
898 * mode based on the local permissions and some heuristics. */
899 if (!preserve_perms) {
900 int exists = statret == 0
901 && S_ISDIR(st.st_mode) == S_ISDIR(file->mode);
902 file->mode = dest_mode(file->mode, st.st_mode, exists);
903 }
904
905 if (S_ISDIR(file->mode)) {
906 /* The file to be received is a directory, so we need
907 * to prepare appropriately. If there is already a
908 * file of that name and it is *not* a directory, then
909 * we need to delete it. If it doesn't exist, then
910 * (perhaps recursively) create it. */
911 if (statret == 0 && !S_ISDIR(st.st_mode)) {
912 if (delete_item(fname, st.st_mode, del_opts) < 0)
913 return;
914 statret = -1;
915 }
916 if (dry_run && statret != 0 && missing_below < 0) {
917 missing_below = file->dir.depth;
918 dry_run++;
919 }
920 if (itemizing && f_out != -1) {
921 itemize(file, ndx, statret, &st,
922 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
923 }
924 if (statret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
925 if (!relative_paths || errno != ENOENT
926 || create_directory_path(fname) < 0
927 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
928 rsyserr(FERROR, errno,
929 "recv_generator: mkdir %s failed",
930 full_fname(fname));
931 }
932 }
933 if (set_file_attrs(fname, file, statret ? NULL : &st, 0)
934 && verbose && code && f_out != -1)
935 rprintf(code, "%s/\n", fname);
936 if (delete_during && f_out != -1 && !phase && dry_run < 2
937 && (file->flags & FLAG_DEL_HERE))
938 delete_in_dir(the_file_list, fname, file, &st);
939 return;
940 }
941
942 if (preserve_hard_links && file->link_u.links
943 && hard_link_check(file, ndx, fname, statret, &st,
944 itemizing, code, HL_CHECK_MASTER))
945 return;
946
947 if (preserve_links && S_ISLNK(file->mode)) {
948#ifdef SUPPORT_LINKS
949 if (safe_symlinks && unsafe_symlink(file->u.link, fname)) {
950 if (verbose) {
951 if (the_file_list->count == 1)
952 fname = f_name(file, NULL);
953 rprintf(FINFO,
954 "ignoring unsafe symlink %s -> \"%s\"\n",
955 full_fname(fname), file->u.link);
956 }
957 return;
958 }
959 if (statret == 0) {
960 char lnk[MAXPATHLEN];
961 int len;
962
963 if (!S_ISDIR(st.st_mode)
964 && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) {
965 lnk[len] = 0;
966 /* A link already pointing to the
967 * right place -- no further action
968 * required. */
969 if (strcmp(lnk, file->u.link) == 0) {
970 if (itemizing) {
971 itemize(file, ndx, 0, &st, 0,
972 0, NULL);
973 }
974 set_file_attrs(fname, file, &st,
975 maybe_ATTRS_REPORT);
976 if (preserve_hard_links
977 && file->link_u.links) {
978 hard_link_cluster(file, ndx,
979 itemizing,
980 code);
981 }
982 return;
983 }
984 }
985 /* Not the right symlink (or not a symlink), so
986 * delete it. */
987 if (delete_item(fname, st.st_mode, del_opts) < 0)
988 return;
989 if (!S_ISLNK(st.st_mode))
990 statret = -1;
991 } else if (basis_dir[0] != NULL) {
992 if (try_dests_non(file, fname, ndx, itemizing,
993 maybe_ATTRS_REPORT, code) == -2) {
994#ifndef CAN_HARDLINK_SYMLINK
995 if (link_dest) {
996 /* Resort to --copy-dest behavior. */
997 } else
998#endif
999 if (!copy_dest)
1000 return;
1001 itemizing = code = 0;
1002 }
1003 }
1004 if (preserve_hard_links && file->link_u.links
1005 && hard_link_check(file, ndx, fname, -1, &st,
1006 itemizing, code, HL_SKIP))
1007 return;
1008 if (do_symlink(file->u.link,fname) != 0) {
1009 rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
1010 full_fname(fname), file->u.link);
1011 } else {
1012 set_file_attrs(fname, file, NULL, 0);
1013 if (itemizing) {
1014 itemize(file, ndx, statret, &st,
1015 ITEM_LOCAL_CHANGE, 0, NULL);
1016 }
1017 if (code && verbose) {
1018 rprintf(code, "%s -> %s\n", fname,
1019 file->u.link);
1020 }
1021 if (remove_sent_files && !dry_run) {
1022 char numbuf[4];
1023 SIVAL(numbuf, 0, ndx);
1024 send_msg(MSG_SUCCESS, numbuf, 4);
1025 }
1026 if (preserve_hard_links && file->link_u.links)
1027 hard_link_cluster(file, ndx, itemizing, code);
1028 }
1029#endif
1030 return;
1031 }
1032
1033 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1034 || (preserve_specials && IS_SPECIAL(file->mode))) {
1035 if (statret != 0 && basis_dir[0] != NULL) {
1036 if (try_dests_non(file, fname, ndx, itemizing,
1037 maybe_ATTRS_REPORT, code) == -2) {
1038#ifndef CAN_HARDLINK_SPECIAL
1039 if (link_dest) {
1040 /* Resort to --copy-dest behavior. */
1041 } else
1042#endif
1043 if (!copy_dest)
1044 return;
1045 itemizing = code = 0;
1046 }
1047 }
1048 if (statret != 0
1049 || (st.st_mode & ~CHMOD_BITS) != (file->mode & ~CHMOD_BITS)
1050 || st.st_rdev != file->u.rdev) {
1051 if (statret == 0
1052 && delete_item(fname, st.st_mode, del_opts) < 0)
1053 return;
1054 if (preserve_hard_links && file->link_u.links
1055 && hard_link_check(file, ndx, fname, -1, &st,
1056 itemizing, code, HL_SKIP))
1057 return;
1058 if ((IS_DEVICE(file->mode) && !IS_DEVICE(st.st_mode))
1059 || (IS_SPECIAL(file->mode) && !IS_SPECIAL(st.st_mode)))
1060 statret = -1;
1061 if (verbose > 2) {
1062 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
1063 fname,
1064 (int)file->mode, (int)file->u.rdev);
1065 }
1066 if (do_mknod(fname,file->mode,file->u.rdev) < 0) {
1067 rsyserr(FERROR, errno, "mknod %s failed",
1068 full_fname(fname));
1069 } else {
1070 set_file_attrs(fname, file, NULL, 0);
1071 if (itemizing) {
1072 itemize(file, ndx, statret, &st,
1073 ITEM_LOCAL_CHANGE, 0, NULL);
1074 }
1075 if (code && verbose)
1076 rprintf(code, "%s\n", fname);
1077 if (preserve_hard_links && file->link_u.links) {
1078 hard_link_cluster(file, ndx,
1079 itemizing, code);
1080 }
1081 }
1082 } else {
1083 if (itemizing)
1084 itemize(file, ndx, statret, &st, 0, 0, NULL);
1085 set_file_attrs(fname, file, &st, maybe_ATTRS_REPORT);
1086 if (preserve_hard_links && file->link_u.links)
1087 hard_link_cluster(file, ndx, itemizing, code);
1088 }
1089 return;
1090 }
1091
1092 if (!S_ISREG(file->mode)) {
1093 if (the_file_list->count == 1)
1094 fname = f_name(file, NULL);
1095 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1096 return;
1097 }
1098
1099 if (max_size && file->length > max_size) {
1100 if (verbose > 1) {
1101 if (the_file_list->count == 1)
1102 fname = f_name(file, NULL);
1103 rprintf(FINFO, "%s is over max-size\n", fname);
1104 }
1105 return;
1106 }
1107 if (min_size && file->length < min_size) {
1108 if (verbose > 1) {
1109 if (the_file_list->count == 1)
1110 fname = f_name(file, NULL);
1111 rprintf(FINFO, "%s is under min-size\n", fname);
1112 }
1113 return;
1114 }
1115
1116 if (ignore_existing && statret == 0) {
1117 if (verbose > 1)
1118 rprintf(FINFO, "%s exists\n", fname);
1119 return;
1120 }
1121
1122 if (update_only && statret == 0
1123 && cmp_time(st.st_mtime, file->modtime) > 0) {
1124 if (verbose > 1)
1125 rprintf(FINFO, "%s is newer\n", fname);
1126 return;
1127 }
1128
1129 fnamecmp = fname;
1130 fnamecmp_type = FNAMECMP_FNAME;
1131
1132 if (statret == 0 && !S_ISREG(st.st_mode)) {
1133 if (delete_item(fname, st.st_mode, del_opts) != 0)
1134 return;
1135 statret = -1;
1136 stat_errno = ENOENT;
1137 }
1138
1139 if (statret != 0 && basis_dir[0] != NULL) {
1140 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &st,
1141 itemizing, maybe_ATTRS_REPORT, code);
1142 if (j == -2)
1143 return;
1144 if (j != -1) {
1145 fnamecmp = fnamecmpbuf;
1146 fnamecmp_type = j;
1147 statret = 0;
1148 }
1149 }
1150
1151 real_ret = statret;
1152 real_st = st;
1153
1154 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1155 && link_stat(partialptr, &partial_st, 0) == 0
1156 && S_ISREG(partial_st.st_mode)) {
1157 if (statret != 0)
1158 goto prepare_to_open;
1159 } else
1160 partialptr = NULL;
1161
1162 if (statret != 0 && fuzzy_dirlist && dry_run <= 1) {
1163 int j = find_fuzzy(file, fuzzy_dirlist);
1164 if (j >= 0) {
1165 fuzzy_file = fuzzy_dirlist->files[j];
1166 f_name(fuzzy_file, fnamecmpbuf);
1167 if (verbose > 2) {
1168 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1169 fname, fnamecmpbuf);
1170 }
1171 st.st_size = fuzzy_file->length;
1172 statret = 0;
1173 fnamecmp = fnamecmpbuf;
1174 fnamecmp_type = FNAMECMP_FUZZY;
1175 }
1176 }
1177
1178 if (statret != 0) {
1179 if (preserve_hard_links && file->link_u.links
1180 && hard_link_check(file, ndx, fname, statret, &st,
1181 itemizing, code, HL_SKIP))
1182 return;
1183 if (stat_errno == ENOENT)
1184 goto notify_others;
1185 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1186 full_fname(fname));
1187 return;
1188 }
1189
1190 if (append_mode && st.st_size > file->length)
1191 return;
1192
1193 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1194 ;
1195 else if (fnamecmp_type == FNAMECMP_FUZZY)
1196 ;
1197 else if (unchanged_file(fnamecmp, file, &st)) {
1198 if (partialptr) {
1199 do_unlink(partialptr);
1200 handle_partial_dir(partialptr, PDIR_DELETE);
1201 }
1202 if (itemizing) {
1203 itemize(file, ndx, real_ret, &real_st,
1204 0, 0, NULL);
1205 }
1206 set_file_attrs(fname, file, &st, maybe_ATTRS_REPORT);
1207 if (preserve_hard_links && file->link_u.links)
1208 hard_link_cluster(file, ndx, itemizing, code);
1209 return;
1210 }
1211
1212 prepare_to_open:
1213 if (partialptr) {
1214 st = partial_st;
1215 fnamecmp = partialptr;
1216 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1217 statret = 0;
1218 }
1219
1220 if (!do_xfers || read_batch || whole_file)
1221 goto notify_others;
1222
1223 if (fuzzy_dirlist) {
1224 int j = flist_find(fuzzy_dirlist, file);
1225 if (j >= 0) /* don't use changing file as future fuzzy basis */
1226 fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY;
1227 }
1228
1229 /* open the file */
1230 fd = do_open(fnamecmp, O_RDONLY, 0);
1231
1232 if (fd == -1) {
1233 rsyserr(FERROR, errno, "failed to open %s, continuing",
1234 full_fname(fnamecmp));
1235 pretend_missing:
1236 /* pretend the file didn't exist */
1237 if (preserve_hard_links && file->link_u.links
1238 && hard_link_check(file, ndx, fname, statret, &st,
1239 itemizing, code, HL_SKIP))
1240 return;
1241 statret = real_ret = -1;
1242 goto notify_others;
1243 }
1244
1245 if (inplace && make_backups && fnamecmp_type == FNAMECMP_FNAME) {
1246 if (!(backupptr = get_backup_name(fname))) {
1247 close(fd);
1248 return;
1249 }
1250 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1251 close(fd);
1252 goto pretend_missing;
1253 }
1254 if (robust_unlink(backupptr) && errno != ENOENT) {
1255 rsyserr(FERROR, errno, "unlink %s",
1256 full_fname(backupptr));
1257 free(back_file);
1258 close(fd);
1259 return;
1260 }
1261 if ((f_copy = do_open(backupptr,
1262 O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1263 rsyserr(FERROR, errno, "open %s",
1264 full_fname(backupptr));
1265 free(back_file);
1266 close(fd);
1267 return;
1268 }
1269 fnamecmp_type = FNAMECMP_BACKUP;
1270 }
1271
1272 if (verbose > 3) {
1273 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1274 fnamecmp, (double)st.st_size);
1275 }
1276
1277 if (verbose > 2)
1278 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1279
1280 notify_others:
1281 if (remove_sent_files && !delay_updates && !phase)
1282 increment_active_files(ndx, itemizing, code);
1283 write_int(f_out, ndx);
1284 if (itemizing) {
1285 int iflags = ITEM_TRANSFER;
1286 if (always_checksum)
1287 iflags |= ITEM_REPORT_CHECKSUM;
1288 if (fnamecmp_type != FNAMECMP_FNAME)
1289 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1290 if (fnamecmp_type == FNAMECMP_FUZZY)
1291 iflags |= ITEM_XNAME_FOLLOWS;
1292 itemize(file, -1, real_ret, &real_st, iflags, fnamecmp_type,
1293 fuzzy_file ? fuzzy_file->basename : NULL);
1294 }
1295
1296 if (!do_xfers) {
1297 if (preserve_hard_links && file->link_u.links)
1298 hard_link_cluster(file, ndx, itemizing, code);
1299 return;
1300 }
1301 if (read_batch)
1302 return;
1303
1304 if (statret != 0 || whole_file) {
1305 write_sum_head(f_out, NULL);
1306 return;
1307 }
1308
1309 generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1310
1311 if (f_copy >= 0) {
1312 close(f_copy);
1313 set_file_attrs(backupptr, back_file, NULL, 0);
1314 if (verbose > 1) {
1315 rprintf(FINFO, "backed up %s to %s\n",
1316 fname, backupptr);
1317 }
1318 free(back_file);
1319 }
1320
1321 close(fd);
1322}
1323
1324void generate_files(int f_out, struct file_list *flist, char *local_name)
1325{
1326 int i;
1327 char fbuf[MAXPATHLEN];
1328 int itemizing, maybe_ATTRS_REPORT;
1329 enum logcode code;
1330 int lull_mod = allowed_lull * 5;
1331 int need_retouch_dir_times = preserve_times && !omit_dir_times;
1332 int need_retouch_dir_perms = 0;
1333 int save_ignore_existing = ignore_existing;
1334 int save_ignore_non_existing = ignore_non_existing;
1335 int save_do_progress = do_progress;
1336 int save_make_backups = make_backups;
1337 int dir_tweaking = !(list_only || local_name || dry_run);
1338
1339 if (protocol_version >= 29) {
1340 itemizing = 1;
1341 maybe_ATTRS_REPORT = log_format_has_i ? 0 : ATTRS_REPORT;
1342 code = daemon_log_format_has_i ? 0 : FLOG;
1343 } else if (am_daemon) {
1344 itemizing = daemon_log_format_has_i && do_xfers;
1345 maybe_ATTRS_REPORT = ATTRS_REPORT;
1346 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1347 } else if (!am_server) {
1348 itemizing = log_format_has_i;
1349 maybe_ATTRS_REPORT = log_format_has_i ? 0 : ATTRS_REPORT;
1350 code = itemizing ? 0 : FINFO;
1351 } else {
1352 itemizing = 0;
1353 maybe_ATTRS_REPORT = ATTRS_REPORT;
1354 code = FINFO;
1355 }
1356
1357 if (verbose > 2) {
1358 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
1359 (long)getpid(), flist->count);
1360 }
1361
1362 if (delete_before && !local_name && flist->count > 0)
1363 do_delete_pass(flist);
1364 do_progress = 0;
1365
1366 if (append_mode || whole_file < 0)
1367 whole_file = 0;
1368 if (verbose >= 2) {
1369 rprintf(FINFO, "delta-transmission %s\n",
1370 whole_file
1371 ? "disabled for local transfer or --whole-file"
1372 : "enabled");
1373 }
1374
1375 /* Since we often fill up the outgoing socket and then just sit around
1376 * waiting for the other 2 processes to do their thing, we don't want
1377 * to exit on a timeout. If the data stops flowing, the receiver will
1378 * notice that and let us know via the redo pipe (or its closing). */
1379 ignore_timeout = 1;
1380
1381 for (i = 0; i < flist->count; i++) {
1382 struct file_struct *file = flist->files[i];
1383
1384 if (!file->basename)
1385 continue;
1386
1387 if (local_name)
1388 strlcpy(fbuf, local_name, sizeof fbuf);
1389 else
1390 f_name(file, fbuf);
1391 recv_generator(fbuf, file, i, itemizing, maybe_ATTRS_REPORT,
1392 code, f_out);
1393
1394 /* We need to ensure that any dirs we create have writeable
1395 * permissions during the time we are putting files within
1396 * them. This is then fixed after the transfer is done. */
1397#ifdef HAVE_CHMOD
1398 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)
1399 && dir_tweaking) {
1400 mode_t mode = file->mode | S_IWUSR; /* user write */
1401 char *fname = local_name ? local_name : fbuf;
1402 if (do_chmod(fname, mode) < 0) {
1403 rsyserr(FERROR, errno,
1404 "failed to modify permissions on %s",
1405 full_fname(fname));
1406 }
1407 need_retouch_dir_perms = 1;
1408 }
1409#endif
1410
1411 if (preserve_hard_links)
1412 check_for_finished_hlinks(itemizing, code);
1413
1414 if (allowed_lull && !(i % lull_mod))
1415 maybe_send_keepalive();
1416 else if (!(i % 200))
1417 maybe_flush_socket();
1418 }
1419 recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1420 if (delete_during)
1421 delete_in_dir(NULL, NULL, NULL, NULL);
1422
1423 phase++;
1424 csum_length = SUM_LENGTH;
1425 max_size = min_size = ignore_existing = ignore_non_existing = 0;
1426 update_only = always_checksum = size_only = 0;
1427 ignore_times = 1;
1428 if (append_mode) /* resend w/o append mode */
1429 append_mode = -1; /* ... but only longer files */
1430 make_backups = 0; /* avoid a duplicate backup for inplace processing */
1431
1432 if (verbose > 2)
1433 rprintf(FINFO,"generate_files phase=%d\n",phase);
1434
1435 write_int(f_out, -1);
1436
1437 /* files can cycle through the system more than once
1438 * to catch initial checksum errors */
1439 while ((i = get_redo_num(itemizing, code)) != -1) {
1440 struct file_struct *file = flist->files[i];
1441 if (local_name)
1442 strlcpy(fbuf, local_name, sizeof fbuf);
1443 else
1444 f_name(file, fbuf);
1445 recv_generator(fbuf, file, i, itemizing, maybe_ATTRS_REPORT,
1446 code, f_out);
1447 }
1448
1449 phase++;
1450 ignore_non_existing = save_ignore_non_existing;
1451 ignore_existing = save_ignore_existing;
1452 make_backups = save_make_backups;
1453
1454 if (verbose > 2)
1455 rprintf(FINFO,"generate_files phase=%d\n",phase);
1456
1457 write_int(f_out, -1);
1458 /* Reduce round-trip lag-time for a useless delay-updates phase. */
1459 if (protocol_version >= 29 && !delay_updates)
1460 write_int(f_out, -1);
1461
1462 /* Read MSG_DONE for the redo phase (and any prior messages). */
1463 get_redo_num(itemizing, code);
1464
1465 if (protocol_version >= 29) {
1466 phase++;
1467 if (verbose > 2)
1468 rprintf(FINFO, "generate_files phase=%d\n", phase);
1469 if (delay_updates)
1470 write_int(f_out, -1);
1471 /* Read MSG_DONE for delay-updates phase & prior messages. */
1472 get_redo_num(itemizing, code);
1473 }
1474
1475 do_progress = save_do_progress;
1476 if (delete_after && !local_name && flist->count > 0)
1477 do_delete_pass(flist);
1478
1479 if ((need_retouch_dir_perms || need_retouch_dir_times) && dir_tweaking) {
1480 int j = 0;
1481 /* Now we need to fix any directory permissions that were
1482 * modified during the transfer and/or re-set any tweaked
1483 * modified-time values. */
1484 for (i = 0; i < flist->count; i++) {
1485 struct file_struct *file = flist->files[i];
1486
1487 if (!file->basename || !S_ISDIR(file->mode))
1488 continue;
1489 if (!need_retouch_dir_times && file->mode & S_IWUSR)
1490 continue;
1491 recv_generator(f_name(file, NULL), file, i, itemizing,
1492 maybe_ATTRS_REPORT, code, -1);
1493 if (allowed_lull && !(++j % lull_mod))
1494 maybe_send_keepalive();
1495 else if (!(j % 200))
1496 maybe_flush_socket();
1497 }
1498 }
1499 recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1500
1501 if (max_delete > 0 && deletion_count > max_delete) {
1502 rprintf(FINFO,
1503 "Deletions stopped due to --max-delete limit (%d skipped)\n",
1504 deletion_count - max_delete);
1505 io_error |= IOERR_DEL_LIMIT;
1506 }
1507
1508 if (verbose > 2)
1509 rprintf(FINFO,"generate_files finished\n");
1510}