?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Mention latest changes.
[rsync.git] / generator.c
blobdbcd80e4125fb8992f675fae7553b81e4ba8a70b
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) 2003-2007 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
25 extern int verbose;
26 extern int dry_run;
27 extern int do_xfers;
28 extern int stdout_format_has_i;
29 extern int logfile_format_has_i;
30 extern int am_root;
31 extern int am_server;
32 extern int am_daemon;
33 extern int inc_recurse;
34 extern int do_progress;
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_perms;
45 extern int preserve_times;
46 extern int uid_ndx;
47 extern int gid_ndx;
48 extern int delete_mode;
49 extern int delete_before;
50 extern int delete_during;
51 extern int delete_after;
52 extern int msgdone_cnt;
53 extern int ignore_errors;
54 extern int remove_source_files;
55 extern int delay_updates;
56 extern int update_only;
57 extern int ignore_existing;
58 extern int ignore_non_existing;
59 extern int inplace;
60 extern int append_mode;
61 extern int make_backups;
62 extern int csum_length;
63 extern int ignore_times;
64 extern int size_only;
65 extern OFF_T max_size;
66 extern OFF_T min_size;
67 extern int io_error;
68 extern int flist_eof;
69 extern int allowed_lull;
70 extern int sock_f_out;
71 extern int ignore_timeout;
72 extern int protocol_version;
73 extern int file_total;
74 extern int fuzzy_basis;
75 extern int always_checksum;
76 extern int checksum_len;
77 extern char *partial_dir;
78 extern char *basis_dir[];
79 extern int compare_dest;
80 extern int copy_dest;
81 extern int link_dest;
82 extern int whole_file;
83 extern int list_only;
84 extern int read_batch;
85 extern int safe_symlinks;
86 extern long block_size; /* "long" because popt can't set an int32. */
87 extern int unsort_ndx;
88 extern int max_delete;
89 extern int force_delete;
90 extern int one_file_system;
91 extern struct stats stats;
92 extern dev_t filesystem_dev;
93 extern mode_t orig_umask;
94 extern char *backup_dir;
95 extern char *backup_suffix;
96 extern int backup_suffix_len;
97 extern struct file_list *cur_flist, *first_flist, *dir_flist;
98 extern struct filter_list_struct server_filter_list;
99
100 int ignore_perishable = 0;
101 int non_perishable_cnt = 0;
102 int maybe_ATTRS_REPORT = 0;
103
104 static dev_t dev_zero;
105 static int deletion_count = 0; /* used to implement --max-delete */
106 static int deldelay_size = 0, deldelay_cnt = 0;
107 static char *deldelay_buf = NULL;
108 static int deldelay_fd = -1;
109 static int lull_mod;
110 static int dir_tweaking;
111 static int need_retouch_dir_times;
112 static int need_retouch_dir_perms;
113 static const char *solo_file = NULL;
114
115 /* For calling delete_item() and delete_dir_contents(). */
116 #define DEL_RECURSE (1<<1) /* recurse */
117 #define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
118
119 enum nonregtype {
120 TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
121 };
122
123 enum delret {
124 DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
125 };
126
127 /* Forward declaration for delete_item(). */
128 static enum delret delete_dir_contents(char *fname, int flags);
129
130
131 static int is_backup_file(char *fn)
132 {
133 int k = strlen(fn) - backup_suffix_len;
134 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
135 }
136
137 /* Delete a file or directory. If DEL_RECURSE is set in the flags, this will
138 * delete recursively.
139 *
140 * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
141 * a directory! (The buffer is used for recursion, but returned unchanged.)
142 */
143 static enum delret delete_item(char *fbuf, int mode, char *replace, int flags)
144 {
145 enum delret ret;
146 char *what;
147 int ok;
148
149 if (verbose > 2) {
150 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
151 fbuf, mode, flags);
152 }
153
154 if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
155 ignore_perishable = 1;
156 /* If DEL_RECURSE is not set, this just reports emptiness. */
157 ret = delete_dir_contents(fbuf, flags);
158 ignore_perishable = 0;
159 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
160 goto check_ret;
161 /* OK: try to delete the directory. */
162 }
163
164 if (!replace && max_delete >= 0 && ++deletion_count > max_delete)
165 return DR_AT_LIMIT;
166
167 if (S_ISDIR(mode)) {
168 what = "rmdir";
169 ok = do_rmdir(fbuf) == 0;
170 } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
171 what = "make_backup";
172 ok = make_backup(fbuf);
173 } else {
174 what = "unlink";
175 ok = robust_unlink(fbuf) == 0;
176 }
177
178 if (ok) {
179 if (!replace)
180 log_delete(fbuf, mode);
181 ret = DR_SUCCESS;
182 } else {
183 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
184 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
185 fbuf);
186 ret = DR_NOT_EMPTY;
187 } else if (errno != ENOENT) {
188 rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
189 what, fbuf);
190 ret = DR_FAILURE;
191 } else {
192 deletion_count--;
193 ret = DR_SUCCESS;
194 }
195 }
196
197 check_ret:
198 if (replace && ret != DR_SUCCESS) {
199 rprintf(FERROR, "could not make way for new %s: %s\n",
200 replace, fbuf);
201 }
202 return ret;
203 }
204
205 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
206 * its contents, otherwise just checks for content. Returns DR_SUCCESS or
207 * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
208 * buffer is used for recursion, but returned unchanged.)
209 */
210 static enum delret delete_dir_contents(char *fname, int flags)
211 {
212 struct file_list *dirlist;
213 enum delret ret;
214 unsigned remainder;
215 void *save_filters;
216 int j, dlen;
217 char *p;
218
219 if (verbose > 3) {
220 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
221 fname, flags);
222 }
223
224 dlen = strlen(fname);
225 save_filters = push_local_filters(fname, dlen);
226
227 non_perishable_cnt = 0;
228 dirlist = get_dirlist(fname, dlen, 0);
229 ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
230
231 if (!dirlist->used)
232 goto done;
233
234 if (!(flags & DEL_RECURSE)) {
235 ret = DR_NOT_EMPTY;
236 goto done;
237 }
238
239 p = fname + dlen;
240 if (dlen != 1 || *fname != '/')
241 *p++ = '/';
242 remainder = MAXPATHLEN - (p - fname);
243
244 /* We do our own recursion, so make delete_item() non-recursive. */
245 flags = (flags & ~DEL_RECURSE) | DEL_DIR_IS_EMPTY;
246
247 for (j = dirlist->used; j--; ) {
248 struct file_struct *fp = dirlist->files[j];
249
250 if (fp->flags & FLAG_MOUNT_DIR) {
251 if (verbose > 1) {
252 rprintf(FINFO,
253 "mount point, %s, pins parent directory\n",
254 f_name(fp, NULL));
255 }
256 ret = DR_NOT_EMPTY;
257 continue;
258 }
259
260 strlcpy(p, fp->basename, remainder);
261 /* Save stack by recursing to ourself directly. */
262 if (S_ISDIR(fp->mode)
263 && delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
264 ret = DR_NOT_EMPTY;
265 if (delete_item(fname, fp->mode, NULL, flags) != DR_SUCCESS)
266 ret = DR_NOT_EMPTY;
267 }
268
269 fname[dlen] = '\0';
270
271 done:
272 flist_free(dirlist);
273 pop_local_filters(save_filters);
274
275 if (ret == DR_NOT_EMPTY) {
276 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
277 fname);
278 }
279 return ret;
280 }
281
282 static int start_delete_delay_temp(void)
283 {
284 char fnametmp[MAXPATHLEN];
285 int save_dry_run = dry_run;
286
287 dry_run = 0;
288 if (!get_tmpname(fnametmp, "deldelay")
289 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
290 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
291 inc_recurse ? "" : " -- switching to --delete-after");
292 delete_during = 0;
293 delete_after = !inc_recurse;
294 dry_run = save_dry_run;
295 return 0;
296 }
297 unlink(fnametmp);
298 dry_run = save_dry_run;
299 return 1;
300 }
301
302 static int flush_delete_delay(void)
303 {
304 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
305 rsyserr(FERROR, errno, "flush of delete-delay buffer");
306 delete_during = 0;
307 delete_after = 1;
308 close(deldelay_fd);
309 return 0;
310 }
311 deldelay_cnt = 0;
312 return 1;
313 }
314
315 static int remember_delete(struct file_struct *file, const char *fname)
316 {
317 int len;
318
319 while (1) {
320 len = snprintf(deldelay_buf + deldelay_cnt,
321 deldelay_size - deldelay_cnt,
322 "%x %s%c", (int)file->mode, fname, '\0');
323 if ((deldelay_cnt += len) <= deldelay_size)
324 break;
325 if (deldelay_fd < 0 && !start_delete_delay_temp())
326 return 0;
327 deldelay_cnt -= len;
328 if (!flush_delete_delay())
329 return 0;
330 }
331
332 return 1;
333 }
334
335 static int read_delay_line(char *buf)
336 {
337 static int read_pos = 0;
338 int j, len, mode;
339 char *bp, *past_space;
340
341 while (1) {
342 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
343 if (j < deldelay_cnt)
344 break;
345 if (deldelay_fd < 0) {
346 if (j > read_pos)
347 goto invalid_data;
348 return -1;
349 }
350 deldelay_cnt -= read_pos;
351 if (deldelay_cnt == deldelay_size)
352 goto invalid_data;
353 if (deldelay_cnt && read_pos) {
354 memmove(deldelay_buf, deldelay_buf + read_pos,
355 deldelay_cnt);
356 }
357 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
358 deldelay_size - deldelay_cnt);
359 if (len == 0) {
360 if (deldelay_cnt) {
361 rprintf(FERROR,
362 "ERROR: unexpected EOF in delete-delay file.\n");
363 }
364 return -1;
365 }
366 if (len < 0) {
367 rsyserr(FERROR, errno,
368 "reading delete-delay file");
369 return -1;
370 }
371 deldelay_cnt += len;
372 read_pos = 0;
373 }
374
375 bp = deldelay_buf + read_pos;
376
377 if (sscanf(bp, "%x ", &mode) != 1) {
378 invalid_data:
379 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
380 return -1;
381 }
382 past_space = strchr(bp, ' ') + 1;
383 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
384 read_pos = j + 1;
385
386 if (len > MAXPATHLEN) {
387 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
388 return -1;
389 }
390
391 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
392 * instead of returning a pointer to our buffer. */
393 memcpy(buf, past_space, len);
394
395 return mode;
396 }
397
398 static void do_delayed_deletions(char *delbuf)
399 {
400 int mode;
401
402 if (deldelay_fd >= 0) {
403 if (deldelay_cnt && !flush_delete_delay())
404 return;
405 lseek(deldelay_fd, 0, 0);
406 }
407 while ((mode = read_delay_line(delbuf)) >= 0)
408 delete_item(delbuf, mode, NULL, DEL_RECURSE);
409 if (deldelay_fd >= 0)
410 close(deldelay_fd);
411 }
412
413 /* This function is used to implement per-directory deletion, and is used by
414 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
415 * MAXPATHLEN buffer with the name of the directory in it (the functions we
416 * call will append names onto the end, but the old dir value will be restored
417 * on exit). */
418 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
419 {
420 static int already_warned = 0;
421 struct file_list *dirlist;
422 char delbuf[MAXPATHLEN];
423 int dlen, i;
424
425 if (!fbuf) {
426 change_local_filter_dir(NULL, 0, 0);
427 return;
428 }
429
430 if (verbose > 2)
431 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
432
433 if (allowed_lull)
434 maybe_send_keepalive();
435
436 if (io_error && !ignore_errors) {
437 if (already_warned)
438 return;
439 rprintf(FINFO,
440 "IO error encountered -- skipping file deletion\n");
441 already_warned = 1;
442 return;
443 }
444
445 dlen = strlen(fbuf);
446 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
447
448 if (one_file_system) {
449 if (file->flags & FLAG_TOP_DIR)
450 filesystem_dev = *fs_dev;
451 else if (filesystem_dev != *fs_dev)
452 return;
453 }
454
455 dirlist = get_dirlist(fbuf, dlen, 0);
456
457 /* If an item in dirlist is not found in flist, delete it
458 * from the filesystem. */
459 for (i = dirlist->used; i--; ) {
460 struct file_struct *fp = dirlist->files[i];
461 if (!F_IS_ACTIVE(fp))
462 continue;
463 if (fp->flags & FLAG_MOUNT_DIR) {
464 if (verbose > 1)
465 rprintf(FINFO, "cannot delete mount point: %s\n",
466 f_name(fp, NULL));
467 continue;
468 }
469 if (flist_find(cur_flist, fp) < 0) {
470 f_name(fp, delbuf);
471 if (delete_during == 2) {
472 if (!remember_delete(fp, delbuf))
473 break;
474 } else
475 delete_item(delbuf, fp->mode, NULL, DEL_RECURSE);
476 }
477 }
478
479 flist_free(dirlist);
480 }
481
482 /* This deletes any files on the receiving side that are not present on the
483 * sending side. This is used by --delete-before and --delete-after. */
484 static void do_delete_pass(void)
485 {
486 char fbuf[MAXPATHLEN];
487 STRUCT_STAT st;
488 int j;
489
490 /* dry_run is incremented when the destination doesn't exist yet. */
491 if (dry_run > 1 || list_only)
492 return;
493
494 for (j = 0; j < cur_flist->used; j++) {
495 struct file_struct *file = cur_flist->sorted[j];
496
497 if (!(file->flags & FLAG_CONTENT_DIR))
498 continue;
499
500 f_name(file, fbuf);
501 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
502 rprintf(FINFO, "deleting in %s\n", fbuf);
503
504 if (link_stat(fbuf, &st, keep_dirlinks) < 0
505 || !S_ISDIR(st.st_mode))
506 continue;
507
508 delete_in_dir(fbuf, file, &st.st_dev);
509 }
510 delete_in_dir(NULL, NULL, &dev_zero);
511
512 if (do_progress && !am_server)
513 rprintf(FINFO, " \r");
514 }
515
516 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
517 {
518 #ifndef HAVE_LUTIMES
519 if (S_ISLNK(file->mode)) {
520 ;
521 } else
522 #endif
523 if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
524 return 0;
525
526 if (preserve_perms && !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
527 return 0;
528
529 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
530 return 0;
531
532 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
533 return 0;
534
535 #ifdef SUPPORT_ACLS
536 if (preserve_acls && !S_ISLNK(file->mode)) {
537 if (!ACL_READY(*sxp))
538 get_acl(fname, sxp);
539 if (set_acl(NULL, file, sxp) == 0)
540 return 0;
541 }
542 #endif
543 #ifdef SUPPORT_XATTRS
544 if (preserve_xattrs) {
545 if (!XATTR_READY(*sxp))
546 get_xattr(fname, sxp);
547 if (xattr_diff(file, sxp, 0))
548 return 0;
549 }
550 #endif
551
552 return 1;
553 }
554
555 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
556 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
557 const char *xname)
558 {
559 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
560 int keep_time = !preserve_times ? 0
561 : S_ISDIR(file->mode) ? preserve_times > 1
562 : !S_ISLNK(file->mode);
563
564 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
565 iflags |= ITEM_REPORT_SIZE;
566 if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
567 && !(iflags & ITEM_MATCHED)
568 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
569 || (keep_time && cmp_time(file->modtime, sxp->st.st_mtime) != 0))
570 iflags |= ITEM_REPORT_TIME;
571 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
572 if (S_ISLNK(file->mode)) {
573 ;
574 } else
575 #endif
576 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
577 iflags |= ITEM_REPORT_PERMS;
578 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
579 iflags |= ITEM_REPORT_OWNER;
580 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
581 && sxp->st.st_gid != (gid_t)F_GROUP(file))
582 iflags |= ITEM_REPORT_GROUP;
583 #ifdef SUPPORT_ACLS
584 if (preserve_acls && !S_ISLNK(file->mode)) {
585 if (!ACL_READY(*sxp))
586 get_acl(fnamecmp, sxp);
587 if (set_acl(NULL, file, sxp) == 0)
588 iflags |= ITEM_REPORT_ACL;
589 }
590 #endif
591 #ifdef SUPPORT_XATTRS
592 if (preserve_xattrs) {
593 if (!XATTR_READY(*sxp))
594 get_xattr(fnamecmp, sxp);
595 if (xattr_diff(file, sxp, 1))
596 iflags |= ITEM_REPORT_XATTR;
597 }
598 #endif
599 } else {
600 #ifdef SUPPORT_XATTRS
601 if (preserve_xattrs && xattr_diff(file, NULL, 1))
602 iflags |= ITEM_REPORT_XATTR;
603 #endif
604 iflags |= ITEM_IS_NEW;
605 }
606
607 iflags &= 0xffff;
608 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || verbose > 1
609 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
610 if (protocol_version >= 29) {
611 if (ndx >= 0)
612 write_ndx(sock_f_out, ndx);
613 write_shortint(sock_f_out, iflags);
614 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
615 write_byte(sock_f_out, fnamecmp_type);
616 if (iflags & ITEM_XNAME_FOLLOWS)
617 write_vstring(sock_f_out, xname, strlen(xname));
618 #ifdef SUPPORT_XATTRS
619 if (iflags & ITEM_REPORT_XATTR && !dry_run)
620 send_xattr_request(NULL, file, sock_f_out);
621 #endif
622 } else if (ndx >= 0) {
623 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
624 log_item(code, file, &stats, iflags, xname);
625 }
626 }
627 }
628
629
630 /* Perform our quick-check heuristic for determining if a file is unchanged. */
631 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
632 {
633 if (st->st_size != F_LENGTH(file))
634 return 0;
635
636 /* if always checksum is set then we use the checksum instead
637 of the file time to determine whether to sync */
638 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
639 char sum[MAX_DIGEST_LEN];
640 file_checksum(fn, sum, st->st_size);
641 return memcmp(sum, F_SUM(file), checksum_len) == 0;
642 }
643
644 if (size_only > 0)
645 return 1;
646
647 if (ignore_times)
648 return 0;
649
650 return cmp_time(st->st_mtime, file->modtime) == 0;
651 }
652
653
654 /*
655 * set (initialize) the size entries in the per-file sum_struct
656 * calculating dynamic block and checksum sizes.
657 *
658 * This is only called from generate_and_send_sums() but is a separate
659 * function to encapsulate the logic.
660 *
661 * The block size is a rounded square root of file length.
662 *
663 * The checksum size is determined according to:
664 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
665 * provided by Donovan Baarda which gives a probability of rsync
666 * algorithm corrupting data and falling back using the whole md4
667 * checksums.
668 *
669 * This might be made one of several selectable heuristics.
670 */
671 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
672 {
673 int32 blength;
674 int s2length;
675
676 if (block_size)
677 blength = block_size;
678 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
679 blength = BLOCK_SIZE;
680 else {
681 int32 c;
682 int64 l;
683 int cnt;
684 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
685 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
686 blength = MAX_BLOCK_SIZE;
687 else {
688 blength = 0;
689 do {
690 blength |= c;
691 if (len < (int64)blength * blength)
692 blength &= ~c;
693 c >>= 1;
694 } while (c >= 8); /* round to multiple of 8 */
695 blength = MAX(blength, BLOCK_SIZE);
696 }
697 }
698
699 if (protocol_version < 27) {
700 s2length = csum_length;
701 } else if (csum_length == SUM_LENGTH) {
702 s2length = SUM_LENGTH;
703 } else {
704 int32 c;
705 int64 l;
706 int b = BLOCKSUM_BIAS;
707 for (l = len; l >>= 1; b += 2) {}
708 for (c = blength; (c >>= 1) && b; b--) {}
709 /* add a bit, subtract rollsum, round up. */
710 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
711 s2length = MAX(s2length, csum_length);
712 s2length = MIN(s2length, SUM_LENGTH);
713 }
714
715 sum->flength = len;
716 sum->blength = blength;
717 sum->s2length = s2length;
718 sum->remainder = (int32)(len % blength);
719 sum->count = (int32)(len / blength) + (sum->remainder != 0);
720
721 if (sum->count && verbose > 2) {
722 rprintf(FINFO,
723 "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
724 (double)sum->count, (long)sum->remainder, (long)sum->blength,
725 sum->s2length, (double)sum->flength);
726 }
727 }
728
729
730 /*
731 * Generate and send a stream of signatures/checksums that describe a buffer
732 *
733 * Generate approximately one checksum every block_len bytes.
734 */
735 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
736 {
737 int32 i;
738 struct map_struct *mapbuf;
739 struct sum_struct sum;
740 OFF_T offset = 0;
741
742 sum_sizes_sqroot(&sum, len);
743 write_sum_head(f_out, &sum);
744
745 if (append_mode > 0 && f_copy < 0)
746 return;
747
748 if (len > 0)
749 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
750 else
751 mapbuf = NULL;
752
753 for (i = 0; i < sum.count; i++) {
754 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
755 char *map = map_ptr(mapbuf, offset, n1);
756 char sum2[SUM_LENGTH];
757 uint32 sum1;
758
759 len -= n1;
760 offset += n1;
761
762 if (f_copy >= 0) {
763 full_write(f_copy, map, n1);
764 if (append_mode > 0)
765 continue;
766 }
767
768 sum1 = get_checksum1(map, n1);
769 get_checksum2(map, n1, sum2);
770
771 if (verbose > 3) {
772 rprintf(FINFO,
773 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
774 (double)i, (double)offset - n1, (long)n1,
775 (unsigned long)sum1);
776 }
777 write_int(f_out, sum1);
778 write_buf(f_out, sum2, sum.s2length);
779 }
780
781 if (mapbuf)
782 unmap_file(mapbuf);
783 }
784
785
786 /* Try to find a filename in the same dir as "fname" with a similar name. */
787 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
788 {
789 int fname_len, fname_suf_len;
790 const char *fname_suf, *fname = file->basename;
791 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
792 int j, lowest_j = -1;
793
794 fname_len = strlen(fname);
795 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
796
797 for (j = 0; j < dirlist->used; j++) {
798 struct file_struct *fp = dirlist->files[j];
799 const char *suf, *name;
800 int len, suf_len;
801 uint32 dist;
802
803 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
804 || fp->flags & FLAG_FILE_SENT)
805 continue;
806
807 name = fp->basename;
808
809 if (F_LENGTH(fp) == F_LENGTH(file)
810 && cmp_time(fp->modtime, file->modtime) == 0) {
811 if (verbose > 4) {
812 rprintf(FINFO,
813 "fuzzy size/modtime match for %s\n",
814 name);
815 }
816 return j;
817 }
818
819 len = strlen(name);
820 suf = find_filename_suffix(name, len, &suf_len);
821
822 dist = fuzzy_distance(name, len, fname, fname_len);
823 /* Add some extra weight to how well the suffixes match. */
824 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
825 * 10;
826 if (verbose > 4) {
827 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
828 name, (int)(dist>>16), (int)(dist&0xFFFF));
829 }
830 if (dist <= lowest_dist) {
831 lowest_dist = dist;
832 lowest_j = j;
833 }
834 }
835
836 return lowest_j;
837 }
838
839 /* Copy a file found in our --copy-dest handling. */
840 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
841 {
842 char buf[MAXPATHLEN];
843 const char *copy_to, *partialptr;
844 int fd_w;
845
846 if (inplace) {
847 /* Let copy_file open the destination in place. */
848 fd_w = -1;
849 copy_to = dest;
850 } else {
851 fd_w = open_tmpfile(buf, dest, file);
852 if (fd_w < 0)
853 return -1;
854 copy_to = buf;
855 }
856 cleanup_set(copy_to, NULL, NULL, -1, -1);
857 if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
858 if (verbose) {
859 rsyserr(FINFO, errno, "copy_file %s => %s",
860 full_fname(src), copy_to);
861 }
862 /* Try to clean up. */
863 unlink(copy_to);
864 cleanup_disable();
865 return -1;
866 }
867 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
868 if (partialptr && *partialptr == '/')
869 partialptr = NULL;
870 finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
871 cleanup_disable();
872 return 0;
873 }
874
875 /* This is only called for regular files. We return -2 if we've finished
876 * handling the file, -1 if no dest-linking occurred, or a non-negative
877 * value if we found an alternate basis file. */
878 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
879 char *cmpbuf, stat_x *sxp, int itemizing,
880 enum logcode code)
881 {
882 int best_match = -1;
883 int match_level = 0;
884 int j = 0;
885
886 do {
887 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
888 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
889 continue;
890 switch (match_level) {
891 case 0:
892 best_match = j;
893 match_level = 1;
894 /* FALL THROUGH */
895 case 1:
896 if (!unchanged_file(cmpbuf, file, &sxp->st))
897 continue;
898 best_match = j;
899 match_level = 2;
900 /* FALL THROUGH */
901 case 2:
902 if (!unchanged_attrs(cmpbuf, file, sxp))
903 continue;
904 best_match = j;
905 match_level = 3;
906 break;
907 }
908 break;
909 } while (basis_dir[++j] != NULL);
910
911 if (!match_level)
912 return -1;
913
914 if (j != best_match) {
915 j = best_match;
916 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
917 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
918 return -1;
919 }
920
921 if (match_level == 3 && !copy_dest) {
922 #ifdef SUPPORT_HARD_LINKS
923 if (link_dest) {
924 if (!hard_link_one(file, fname, cmpbuf, 1))
925 goto try_a_copy;
926 if (preserve_hard_links && F_IS_HLINKED(file))
927 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
928 if (itemizing && (verbose > 1 || stdout_format_has_i > 1)) {
929 itemize(cmpbuf, file, ndx, 1, sxp,
930 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
931 0, "");
932 }
933 } else
934 #endif
935 if (itemizing)
936 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
937 if (verbose > 1 && maybe_ATTRS_REPORT)
938 rprintf(FCLIENT, "%s is uptodate\n", fname);
939 return -2;
940 }
941
942 if (match_level >= 2) {
943 #ifdef SUPPORT_HARD_LINKS
944 try_a_copy: /* Copy the file locally. */
945 #endif
946 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
947 return -1;
948 if (itemizing)
949 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
950 #ifdef SUPPORT_XATTRS
951 if (preserve_xattrs)
952 xattr_clear_locals(file);
953 #endif
954 if (maybe_ATTRS_REPORT
955 && ((!itemizing && verbose && match_level == 2)
956 || (verbose > 1 && match_level == 3))) {
957 code = match_level == 3 ? FCLIENT : FINFO;
958 rprintf(code, "%s%s\n", fname,
959 match_level == 3 ? " is uptodate" : "");
960 }
961 #ifdef SUPPORT_HARD_LINKS
962 if (preserve_hard_links && F_IS_HLINKED(file))
963 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
964 #endif
965 return -2;
966 }
967
968 return FNAMECMP_BASIS_DIR_LOW + j;
969 }
970
971 /* This is only called for non-regular files. We return -2 if we've finished
972 * handling the file, or -1 if no dest-linking occurred, or a non-negative
973 * value if we found an alternate basis file. */
974 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
975 char *cmpbuf, stat_x *sxp, int itemizing,
976 enum logcode code)
977 {
978 char lnk[MAXPATHLEN];
979 int best_match = -1;
980 int match_level = 0;
981 enum nonregtype type;
982 uint32 *devp;
983 int len, j = 0;
984
985 #ifndef SUPPORT_LINKS
986 if (S_ISLNK(file->mode))
987 return -1;
988 #endif
989 if (S_ISDIR(file->mode)) {
990 type = TYPE_DIR;
991 } else if (IS_SPECIAL(file->mode))
992 type = TYPE_SPECIAL;
993 else if (IS_DEVICE(file->mode))
994 type = TYPE_DEVICE;
995 #ifdef SUPPORT_LINKS
996 else if (S_ISLNK(file->mode))
997 type = TYPE_SYMLINK;
998 #endif
999 else {
1000 rprintf(FERROR,
1001 "internal: try_dests_non() called with invalid mode (%o)\n",
1002 (int)file->mode);
1003 exit_cleanup(RERR_UNSUPPORTED);
1004 }
1005
1006 do {
1007 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1008 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1009 continue;
1010 switch (type) {
1011 case TYPE_DIR:
1012 if (!S_ISDIR(sxp->st.st_mode))
1013 continue;
1014 break;
1015 case TYPE_SPECIAL:
1016 if (!IS_SPECIAL(sxp->st.st_mode))
1017 continue;
1018 break;
1019 case TYPE_DEVICE:
1020 if (!IS_DEVICE(sxp->st.st_mode))
1021 continue;
1022 break;
1023 #ifdef SUPPORT_LINKS
1024 case TYPE_SYMLINK:
1025 if (!S_ISLNK(sxp->st.st_mode))
1026 continue;
1027 break;
1028 #endif
1029 }
1030 if (match_level < 1) {
1031 match_level = 1;
1032 best_match = j;
1033 }
1034 switch (type) {
1035 case TYPE_DIR:
1036 break;
1037 case TYPE_SPECIAL:
1038 case TYPE_DEVICE:
1039 devp = F_RDEV_P(file);
1040 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1041 continue;
1042 break;
1043 #ifdef SUPPORT_LINKS
1044 case TYPE_SYMLINK:
1045 if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1046 continue;
1047 lnk[len] = '\0';
1048 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1049 continue;
1050 break;
1051 #endif
1052 }
1053 if (match_level < 2) {
1054 match_level = 2;
1055 best_match = j;
1056 }
1057 if (unchanged_attrs(cmpbuf, file, sxp)) {
1058 match_level = 3;
1059 best_match = j;
1060 break;
1061 }
1062 } while (basis_dir[++j] != NULL);
1063
1064 if (!match_level)
1065 return -1;
1066
1067 if (j != best_match) {
1068 j = best_match;
1069 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1070 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1071 return -1;
1072 }
1073
1074 if (match_level == 3) {
1075 #ifdef SUPPORT_HARD_LINKS
1076 if (link_dest
1077 #ifndef CAN_HARDLINK_SYMLINK
1078 && !S_ISLNK(file->mode)
1079 #endif
1080 #ifndef CAN_HARDLINK_SPECIAL
1081 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1082 #endif
1083 && !S_ISDIR(file->mode)) {
1084 if (do_link(cmpbuf, fname) < 0) {
1085 rsyserr(FERROR, errno,
1086 "failed to hard-link %s with %s",
1087 cmpbuf, fname);
1088 return j;
1089 }
1090 if (preserve_hard_links && F_IS_HLINKED(file))
1091 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1092 } else
1093 #endif
1094 match_level = 2;
1095 if (itemizing && stdout_format_has_i
1096 && (verbose > 1 || stdout_format_has_i > 1)) {
1097 int chg = compare_dest && type != TYPE_DIR ? 0
1098 : ITEM_LOCAL_CHANGE
1099 + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1100 char *lp = match_level == 3 ? "" : NULL;
1101 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1102 }
1103 if (verbose > 1 && maybe_ATTRS_REPORT) {
1104 rprintf(FCLIENT, "%s%s is uptodate\n",
1105 fname, type == TYPE_DIR ? "/" : "");
1106 }
1107 return -2;
1108 }
1109
1110 return j;
1111 }
1112
1113 static void list_file_entry(struct file_struct *f)
1114 {
1115 char permbuf[PERMSTRING_SIZE];
1116 double len;
1117
1118 if (!F_IS_ACTIVE(f)) {
1119 /* this can happen if duplicate names were removed */
1120 return;
1121 }
1122
1123 permstring(permbuf, f->mode);
1124 len = F_LENGTH(f);
1125
1126 /* TODO: indicate '+' if the entry has an ACL. */
1127
1128 #ifdef SUPPORT_LINKS
1129 if (preserve_links && S_ISLNK(f->mode)) {
1130 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
1131 permbuf, len, timestring(f->modtime),
1132 f_name(f, NULL), F_SYMLINK(f));
1133 } else
1134 #endif
1135 {
1136 rprintf(FINFO, "%s %11.0f %s %s\n",
1137 permbuf, len, timestring(f->modtime),
1138 f_name(f, NULL));
1139 }
1140 }
1141
1142 static int phase = 0;
1143 static int dflt_perms;
1144
1145 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1146 * make sure it exists, and has the right permissions/timestamp info. For
1147 * all other non-regular files (symlinks, etc.) we create them here. For
1148 * regular files that have changed, we try to find a basis file and then
1149 * start sending checksums. The ndx is the file's unique index value.
1150 *
1151 * When fname is non-null, it must point to a MAXPATHLEN buffer!
1152 *
1153 * Note that f_out is set to -1 when doing final directory-permission and
1154 * modification-time repair. */
1155 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1156 int itemizing, enum logcode code, int f_out)
1157 {
1158 static int missing_below = -1, excluded_below = -1;
1159 static const char *parent_dirname = "";
1160 static struct file_struct *missing_dir = NULL, *excluded_dir = NULL;
1161 static struct file_list *fuzzy_dirlist = NULL;
1162 static int need_fuzzy_dirlist = 0;
1163 struct file_struct *fuzzy_file = NULL;
1164 int fd = -1, f_copy = -1;
1165 stat_x sx, real_sx;
1166 STRUCT_STAT partial_st;
1167 struct file_struct *back_file = NULL;
1168 int statret, real_ret, stat_errno;
1169 char *fnamecmp, *partialptr, *backupptr = NULL;
1170 char fnamecmpbuf[MAXPATHLEN];
1171 uchar fnamecmp_type;
1172 int implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
1173 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1174
1175 if (verbose > 2)
1176 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1177
1178 if (list_only) {
1179 if (S_ISDIR(file->mode)
1180 && ((!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1181 || (inc_recurse && ndx != cur_flist->ndx_start - 1)))
1182 return;
1183 list_file_entry(file);
1184 return;
1185 }
1186
1187 if (server_filter_list.head) {
1188 if (excluded_below >= 0) {
1189 if (F_DEPTH(file) > excluded_below
1190 && (!implied_dirs_are_missing || f_name_has_prefix(file, excluded_dir)))
1191 goto skipping;
1192 excluded_below = -1;
1193 }
1194 if (check_filter(&server_filter_list, fname,
1195 S_ISDIR(file->mode)) < 0) {
1196 if (S_ISDIR(file->mode)) {
1197 excluded_below = F_DEPTH(file);
1198 excluded_dir = file;
1199 }
1200 skipping:
1201 if (verbose) {
1202 rprintf(FINFO,
1203 "skipping server-excluded file \"%s\"\n",
1204 fname);
1205 }
1206 return;
1207 }
1208 }
1209
1210 if (missing_below >= 0) {
1211 if (F_DEPTH(file) <= missing_below
1212 || (implied_dirs_are_missing && !f_name_has_prefix(file, missing_dir))) {
1213 if (dry_run)
1214 dry_run--;
1215 missing_below = -1;
1216 } else if (!dry_run) {
1217 if (S_ISDIR(file->mode))
1218 file->flags |= FLAG_MISSING_DIR;
1219 return;
1220 }
1221 }
1222 #ifdef SUPPORT_ACLS
1223 sx.acc_acl = sx.def_acl = NULL;
1224 #endif
1225 #ifdef SUPPORT_XATTRS
1226 sx.xattr = NULL;
1227 #endif
1228 if (dry_run > 1) {
1229 if (fuzzy_dirlist) {
1230 flist_free(fuzzy_dirlist);
1231 fuzzy_dirlist = NULL;
1232 }
1233 parent_dirname = "";
1234 statret = -1;
1235 stat_errno = ENOENT;
1236 } else {
1237 const char *dn = file->dirname ? file->dirname : ".";
1238 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1239 if (relative_paths && !implied_dirs
1240 && do_stat(dn, &sx.st) < 0
1241 && create_directory_path(fname) < 0) {
1242 rsyserr(FERROR, errno,
1243 "recv_generator: mkdir %s failed",
1244 full_fname(dn));
1245 }
1246 if (fuzzy_dirlist) {
1247 flist_free(fuzzy_dirlist);
1248 fuzzy_dirlist = NULL;
1249 }
1250 if (fuzzy_basis)
1251 need_fuzzy_dirlist = 1;
1252 #ifdef SUPPORT_ACLS
1253 if (!preserve_perms)
1254 dflt_perms = default_perms_for_dir(dn);
1255 #endif
1256 }
1257 parent_dirname = dn;
1258
1259 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1260 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1261 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1262 need_fuzzy_dirlist = 0;
1263 }
1264
1265 statret = link_stat(fname, &sx.st,
1266 keep_dirlinks && S_ISDIR(file->mode));
1267 stat_errno = errno;
1268 }
1269
1270 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1271 if (verbose > 1) {
1272 rprintf(FINFO, "not creating new %s \"%s\"\n",
1273 S_ISDIR(file->mode) ? "directory" : "file",
1274 fname);
1275 }
1276 if (S_ISDIR(file->mode)) {
1277 if (missing_below < 0) {
1278 if (dry_run)
1279 dry_run++;
1280 missing_below = F_DEPTH(file);
1281 missing_dir = file;
1282 }
1283 file->flags |= FLAG_MISSING_DIR;
1284 }
1285 return;
1286 }
1287
1288 if (S_ISDIR(file->mode)) {
1289 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1290 goto cleanup;
1291 if (inc_recurse && ndx != cur_flist->ndx_start - 1) {
1292 /* In inc_recurse mode we want to make sure any missing
1293 * directories get created while we're still processing
1294 * the parent dir (which allows us to touch the parent
1295 * dir's mtime right away). We will handle the dir in
1296 * full later (right before we handle its contents). */
1297 if (statret == 0
1298 && (S_ISDIR(sx.st.st_mode)
1299 || delete_item(fname, sx.st.st_mode, "directory", del_opts) != 0))
1300 goto cleanup; /* Any errors get reported later. */
1301 if (do_mkdir(fname, file->mode & 0700) == 0)
1302 file->flags |= FLAG_DIR_CREATED;
1303 goto cleanup;
1304 }
1305 /* The file to be received is a directory, so we need
1306 * to prepare appropriately. If there is already a
1307 * file of that name and it is *not* a directory, then
1308 * we need to delete it. If it doesn't exist, then
1309 * (perhaps recursively) create it. */
1310 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1311 if (delete_item(fname, sx.st.st_mode, "directory", del_opts) != 0)
1312 goto skipping_dir_contents;
1313 statret = -1;
1314 }
1315 if (dry_run && statret != 0 && missing_below < 0) {
1316 missing_below = F_DEPTH(file);
1317 missing_dir = file;
1318 dry_run++;
1319 }
1320 real_ret = statret;
1321 real_sx = sx;
1322 if (file->flags & FLAG_DIR_CREATED)
1323 statret = -1;
1324 if (!preserve_perms) { /* See comment in non-dir code below. */
1325 file->mode = dest_mode(file->mode, sx.st.st_mode,
1326 dflt_perms, statret == 0);
1327 }
1328 if (statret != 0 && basis_dir[0] != NULL) {
1329 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1330 itemizing, code);
1331 if (j == -2) {
1332 itemizing = 0;
1333 code = FNONE;
1334 } else if (j >= 0)
1335 statret = 1;
1336 }
1337 if (itemizing && f_out != -1) {
1338 itemize(fname, file, ndx, statret, &sx,
1339 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1340 }
1341 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1342 if (!relative_paths || errno != ENOENT
1343 || create_directory_path(fname) < 0
1344 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1345 rsyserr(FERROR, errno,
1346 "recv_generator: mkdir %s failed",
1347 full_fname(fname));
1348 skipping_dir_contents:
1349 rprintf(FERROR,
1350 "*** Skipping any contents from this failed directory ***\n");
1351 missing_below = F_DEPTH(file);
1352 missing_dir = file;
1353 file->flags |= FLAG_MISSING_DIR;
1354 goto cleanup;
1355 }
1356 }
1357 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1358 && verbose && code != FNONE && f_out != -1)
1359 rprintf(code, "%s/\n", fname);
1360
1361 /* We need to ensure that the dirs in the transfer have writable
1362 * permissions during the time we are putting files within them.
1363 * This is then fixed after the transfer is done. */
1364 #ifdef HAVE_CHMOD
1365 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1366 mode_t mode = file->mode | S_IWUSR;
1367 if (do_chmod(fname, mode) < 0) {
1368 rsyserr(FERROR, errno,
1369 "failed to modify permissions on %s",
1370 full_fname(fname));
1371 }
1372 need_retouch_dir_perms = 1;
1373 }
1374 #endif
1375
1376 if (real_ret != 0 && one_file_system)
1377 real_sx.st.st_dev = filesystem_dev;
1378 if (inc_recurse) {
1379 if (one_file_system) {
1380 uint32 *devp = F_DIR_DEV_P(file);
1381 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1382 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1383 }
1384 }
1385 else if (delete_during && f_out != -1 && !phase && dry_run < 2
1386 && (file->flags & FLAG_CONTENT_DIR))
1387 delete_in_dir(fname, file, &real_sx.st.st_dev);
1388 goto cleanup;
1389 }
1390
1391 /* If we're not preserving permissions, change the file-list's
1392 * mode based on the local permissions and some heuristics. */
1393 if (!preserve_perms) {
1394 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1395 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1396 exists);
1397 }
1398
1399 #ifdef SUPPORT_HARD_LINKS
1400 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1401 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1402 goto cleanup;
1403 #endif
1404
1405 if (preserve_links && S_ISLNK(file->mode)) {
1406 #ifdef SUPPORT_LINKS
1407 const char *sl = F_SYMLINK(file);
1408 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1409 if (verbose) {
1410 if (solo_file)
1411 fname = f_name(file, NULL);
1412 rprintf(FINFO,
1413 "ignoring unsafe symlink %s -> \"%s\"\n",
1414 full_fname(fname), sl);
1415 }
1416 return;
1417 }
1418 if (statret == 0) {
1419 char lnk[MAXPATHLEN];
1420 int len;
1421
1422 if (!S_ISLNK(sx.st.st_mode))
1423 statret = -1;
1424 else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1425 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1426 /* The link is pointing to the right place. */
1427 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1428 if (itemizing)
1429 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1430 #ifdef SUPPORT_HARD_LINKS
1431 if (preserve_hard_links && F_IS_HLINKED(file))
1432 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1433 #endif
1434 if (remove_source_files == 1)
1435 goto return_with_success;
1436 goto cleanup;
1437 }
1438 /* Not the right symlink (or not a symlink), so
1439 * delete it. */
1440 if (delete_item(fname, sx.st.st_mode, "symlink", del_opts) != 0)
1441 goto cleanup;
1442 } else if (basis_dir[0] != NULL) {
1443 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1444 itemizing, code);
1445 if (j == -2) {
1446 #ifndef CAN_HARDLINK_SYMLINK
1447 if (link_dest) {
1448 /* Resort to --copy-dest behavior. */
1449 } else
1450 #endif
1451 if (!copy_dest)
1452 goto cleanup;
1453 itemizing = 0;
1454 code = FNONE;
1455 } else if (j >= 0)
1456 statret = 1;
1457 }
1458 #ifdef SUPPORT_HARD_LINKS
1459 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1460 cur_flist->in_progress++;
1461 goto cleanup;
1462 }
1463 #endif
1464 if (do_symlink(sl, fname) != 0) {
1465 rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
1466 full_fname(fname), sl);
1467 } else {
1468 set_file_attrs(fname, file, NULL, NULL, 0);
1469 if (itemizing) {
1470 itemize(fname, file, ndx, statret, &sx,
1471 ITEM_LOCAL_CHANGE, 0, NULL);
1472 }
1473 if (code != FNONE && verbose)
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 uint32 *devp = F_RDEV_P(file);
1492 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1493 if (statret == 0) {
1494 char *t;
1495 if (IS_DEVICE(file->mode)) {
1496 if (!IS_DEVICE(sx.st.st_mode))
1497 statret = -1;
1498 t = "device file";
1499 } else {
1500 if (!IS_SPECIAL(sx.st.st_mode))
1501 statret = -1;
1502 t = "special file";
1503 }
1504 if (statret == 0
1505 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1506 && sx.st.st_rdev == rdev) {
1507 /* The device or special file is identical. */
1508 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1509 if (itemizing)
1510 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1511 #ifdef SUPPORT_HARD_LINKS
1512 if (preserve_hard_links && F_IS_HLINKED(file))
1513 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1514 #endif
1515 if (remove_source_files == 1)
1516 goto return_with_success;
1517 goto cleanup;
1518 }
1519 if (delete_item(fname, sx.st.st_mode, t, del_opts) != 0)
1520 goto cleanup;
1521 } else if (basis_dir[0] != NULL) {
1522 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1523 itemizing, code);
1524 if (j == -2) {
1525 #ifndef CAN_HARDLINK_SPECIAL
1526 if (link_dest) {
1527 /* Resort to --copy-dest behavior. */
1528 } else
1529 #endif
1530 if (!copy_dest)
1531 goto cleanup;
1532 itemizing = 0;
1533 code = FNONE;
1534 } else if (j >= 0)
1535 statret = 1;
1536 }
1537 #ifdef SUPPORT_HARD_LINKS
1538 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1539 cur_flist->in_progress++;
1540 goto cleanup;
1541 }
1542 #endif
1543 if (verbose > 2) {
1544 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1545 fname, (int)file->mode,
1546 (long)major(rdev), (long)minor(rdev));
1547 }
1548 if (do_mknod(fname, file->mode, rdev) < 0) {
1549 rsyserr(FERROR, errno, "mknod %s failed",
1550 full_fname(fname));
1551 } else {
1552 set_file_attrs(fname, file, NULL, NULL, 0);
1553 if (itemizing) {
1554 itemize(fname, file, ndx, statret, &sx,
1555 ITEM_LOCAL_CHANGE, 0, NULL);
1556 }
1557 if (code != FNONE && verbose)
1558 rprintf(code, "%s\n", fname);
1559 #ifdef SUPPORT_HARD_LINKS
1560 if (preserve_hard_links && F_IS_HLINKED(file))
1561 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1562 #endif
1563 if (remove_source_files == 1)
1564 goto return_with_success;
1565 }
1566 goto cleanup;
1567 }
1568
1569 if (!S_ISREG(file->mode)) {
1570 if (solo_file)
1571 fname = f_name(file, NULL);
1572 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1573 goto cleanup;
1574 }
1575
1576 if (max_size > 0 && F_LENGTH(file) > max_size) {
1577 if (verbose > 1) {
1578 if (solo_file)
1579 fname = f_name(file, NULL);
1580 rprintf(FINFO, "%s is over max-size\n", fname);
1581 }
1582 goto cleanup;
1583 }
1584 if (min_size > 0 && F_LENGTH(file) < min_size) {
1585 if (verbose > 1) {
1586 if (solo_file)
1587 fname = f_name(file, NULL);
1588 rprintf(FINFO, "%s is under min-size\n", fname);
1589 }
1590 goto cleanup;
1591 }
1592
1593 if (ignore_existing > 0 && statret == 0) {
1594 if (verbose > 1)
1595 rprintf(FINFO, "%s exists\n", fname);
1596 goto cleanup;
1597 }
1598
1599 if (update_only > 0 && statret == 0
1600 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1601 if (verbose > 1)
1602 rprintf(FINFO, "%s is newer\n", fname);
1603 goto cleanup;
1604 }
1605
1606 fnamecmp = fname;
1607 fnamecmp_type = FNAMECMP_FNAME;
1608
1609 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1610 if (delete_item(fname, sx.st.st_mode, "regular file", del_opts) != 0)
1611 goto cleanup;
1612 statret = -1;
1613 stat_errno = ENOENT;
1614 }
1615
1616 if (statret != 0 && basis_dir[0] != NULL) {
1617 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1618 itemizing, code);
1619 if (j == -2) {
1620 if (remove_source_files == 1)
1621 goto return_with_success;
1622 goto cleanup;
1623 }
1624 if (j >= 0) {
1625 fnamecmp = fnamecmpbuf;
1626 fnamecmp_type = j;
1627 statret = 0;
1628 }
1629 }
1630
1631 real_ret = statret;
1632 real_sx = sx;
1633
1634 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1635 && link_stat(partialptr, &partial_st, 0) == 0
1636 && S_ISREG(partial_st.st_mode)) {
1637 if (statret != 0)
1638 goto prepare_to_open;
1639 } else
1640 partialptr = NULL;
1641
1642 if (statret != 0 && fuzzy_dirlist && dry_run <= 1) {
1643 int j = find_fuzzy(file, fuzzy_dirlist);
1644 if (j >= 0) {
1645 fuzzy_file = fuzzy_dirlist->files[j];
1646 f_name(fuzzy_file, fnamecmpbuf);
1647 if (verbose > 2) {
1648 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1649 fname, fnamecmpbuf);
1650 }
1651 sx.st.st_size = F_LENGTH(fuzzy_file);
1652 statret = 0;
1653 fnamecmp = fnamecmpbuf;
1654 fnamecmp_type = FNAMECMP_FUZZY;
1655 }
1656 }
1657
1658 if (statret != 0) {
1659 #ifdef SUPPORT_HARD_LINKS
1660 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1661 cur_flist->in_progress++;
1662 goto cleanup;
1663 }
1664 #endif
1665 if (stat_errno == ENOENT)
1666 goto notify_others;
1667 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1668 full_fname(fname));
1669 goto cleanup;
1670 }
1671
1672 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file))
1673 goto cleanup;
1674
1675 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1676 ;
1677 else if (fnamecmp_type == FNAMECMP_FUZZY)
1678 ;
1679 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1680 if (partialptr) {
1681 do_unlink(partialptr);
1682 handle_partial_dir(partialptr, PDIR_DELETE);
1683 }
1684 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1685 if (itemizing)
1686 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1687 #ifdef SUPPORT_HARD_LINKS
1688 if (preserve_hard_links && F_IS_HLINKED(file))
1689 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1690 #endif
1691 if (remove_source_files != 1)
1692 goto cleanup;
1693 return_with_success:
1694 if (!dry_run)
1695 send_msg_int(MSG_SUCCESS, ndx);
1696 goto cleanup;
1697 }
1698
1699 prepare_to_open:
1700 if (partialptr) {
1701 sx.st = partial_st;
1702 fnamecmp = partialptr;
1703 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1704 statret = 0;
1705 }
1706
1707 if (!do_xfers)
1708 goto notify_others;
1709
1710 if (read_batch || whole_file) {
1711 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1712 if (!(backupptr = get_backup_name(fname)))
1713 goto cleanup;
1714 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1715 goto pretend_missing;
1716 if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1717 unmake_file(back_file);
1718 back_file = NULL;
1719 goto cleanup;
1720 }
1721 }
1722 goto notify_others;
1723 }
1724
1725 if (fuzzy_dirlist) {
1726 int j = flist_find(fuzzy_dirlist, file);
1727 if (j >= 0) /* don't use changing file as future fuzzy basis */
1728 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1729 }
1730
1731 /* open the file */
1732 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1733 rsyserr(FERROR, errno, "failed to open %s, continuing",
1734 full_fname(fnamecmp));
1735 pretend_missing:
1736 /* pretend the file didn't exist */
1737 #ifdef SUPPORT_HARD_LINKS
1738 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1739 cur_flist->in_progress++;
1740 goto cleanup;
1741 }
1742 #endif
1743 statret = real_ret = -1;
1744 goto notify_others;
1745 }
1746
1747 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1748 if (!(backupptr = get_backup_name(fname))) {
1749 close(fd);
1750 goto cleanup;
1751 }
1752 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1753 close(fd);
1754 goto pretend_missing;
1755 }
1756 if (robust_unlink(backupptr) && errno != ENOENT) {
1757 rsyserr(FERROR, errno, "unlink %s",
1758 full_fname(backupptr));
1759 unmake_file(back_file);
1760 back_file = NULL;
1761 close(fd);
1762 goto cleanup;
1763 }
1764 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0
1765 && (errno != ENOENT || make_bak_dir(backupptr) < 0
1766 || (f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)) {
1767 rsyserr(FERROR, errno, "open %s",
1768 full_fname(backupptr));
1769 unmake_file(back_file);
1770 back_file = NULL;
1771 close(fd);
1772 goto cleanup;
1773 }
1774 fnamecmp_type = FNAMECMP_BACKUP;
1775 }
1776
1777 if (verbose > 3) {
1778 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1779 fnamecmp, (double)sx.st.st_size);
1780 }
1781
1782 if (verbose > 2)
1783 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1784
1785 notify_others:
1786 if (remove_source_files && !delay_updates && !phase)
1787 increment_active_files(ndx, itemizing, code);
1788 if (inc_recurse && !dry_run)
1789 cur_flist->in_progress++;
1790 #ifdef SUPPORT_HARD_LINKS
1791 if (preserve_hard_links && F_IS_HLINKED(file))
1792 file->flags |= FLAG_FILE_SENT;
1793 #endif
1794 write_ndx(f_out, ndx);
1795 if (itemizing) {
1796 int iflags = ITEM_TRANSFER;
1797 if (always_checksum > 0)
1798 iflags |= ITEM_REPORT_CHECKSUM;
1799 if (fnamecmp_type != FNAMECMP_FNAME)
1800 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1801 if (fnamecmp_type == FNAMECMP_FUZZY)
1802 iflags |= ITEM_XNAME_FOLLOWS;
1803 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1804 fuzzy_file ? fuzzy_file->basename : NULL);
1805 #ifdef SUPPORT_ACLS
1806 if (preserve_acls)
1807 free_acl(&real_sx);
1808 #endif
1809 #ifdef SUPPORT_XATTRS
1810 if (preserve_xattrs)
1811 free_xattr(&real_sx);
1812 #endif
1813 }
1814
1815 if (!do_xfers) {
1816 #ifdef SUPPORT_HARD_LINKS
1817 if (preserve_hard_links && F_IS_HLINKED(file))
1818 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1819 #endif
1820 goto cleanup;
1821 }
1822 if (read_batch)
1823 goto cleanup;
1824
1825 if (statret != 0 || whole_file)
1826 write_sum_head(f_out, NULL);
1827 else {
1828 generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy);
1829 close(fd);
1830 }
1831
1832 cleanup:
1833 if (back_file) {
1834 if (f_copy >= 0)
1835 close(f_copy);
1836 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1837 if (verbose > 1) {
1838 rprintf(FINFO, "backed up %s to %s\n",
1839 fname, backupptr);
1840 }
1841 unmake_file(back_file);
1842 }
1843
1844 #ifdef SUPPORT_ACLS
1845 if (preserve_acls)
1846 free_acl(&sx);
1847 #endif
1848 #ifdef SUPPORT_XATTRS
1849 if (preserve_xattrs)
1850 free_xattr(&sx);
1851 #endif
1852 return;
1853 }
1854
1855 static void touch_up_dirs(struct file_list *flist, int ndx)
1856 {
1857 static int counter = 0;
1858 struct file_struct *file;
1859 char *fname;
1860 int i, start, end;
1861
1862 if (ndx < 0) {
1863 start = 0;
1864 end = flist->used - 1;
1865 } else
1866 start = end = ndx;
1867
1868 /* Fix any directory permissions that were modified during the
1869 * transfer and/or re-set any tweaked modified-time values. */
1870 for (i = start; i <= end; i++, counter++) {
1871 file = flist->files[i];
1872 if (!S_ISDIR(file->mode)
1873 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1874 continue;
1875 if (verbose > 3) {
1876 fname = f_name(file, NULL);
1877 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
1878 NS(fname), i);
1879 }
1880 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
1881 || (!need_retouch_dir_times && file->mode & S_IWUSR))
1882 continue;
1883 fname = f_name(file, NULL);
1884 if (!(file->mode & S_IWUSR))
1885 do_chmod(fname, file->mode);
1886 if (need_retouch_dir_times)
1887 set_modtime(fname, file->modtime, file->mode);
1888 if (allowed_lull && !(counter % lull_mod))
1889 maybe_send_keepalive();
1890 else if (!(counter & 0xFF))
1891 maybe_flush_socket(0);
1892 }
1893 }
1894
1895 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
1896 {
1897 struct file_struct *file;
1898 struct file_list *flist;
1899 char fbuf[MAXPATHLEN];
1900 int ndx;
1901
1902 #ifdef SUPPORT_HARD_LINKS
1903 while (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
1904 flist = flist_for_ndx(ndx);
1905 assert(flist != NULL);
1906 file = flist->files[ndx - flist->ndx_start];
1907 assert(file->flags & FLAG_HLINKED);
1908 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
1909 flist->in_progress--;
1910 }
1911 #endif
1912
1913 while (check_redo && (ndx = get_redo_num()) != -1) {
1914 csum_length = SUM_LENGTH;
1915 max_size = -max_size;
1916 min_size = -min_size;
1917 ignore_existing = -ignore_existing;
1918 ignore_non_existing = -ignore_non_existing;
1919 update_only = -update_only;
1920 always_checksum = -always_checksum;
1921 size_only = -size_only;
1922 append_mode = -append_mode;
1923 make_backups = -make_backups; /* avoid dup backup w/inplace */
1924 ignore_times++;
1925
1926 flist = cur_flist;
1927 cur_flist = flist_for_ndx(ndx);
1928
1929 file = cur_flist->files[ndx - cur_flist->ndx_start];
1930 if (solo_file)
1931 strlcpy(fbuf, solo_file, sizeof fbuf);
1932 else
1933 f_name(file, fbuf);
1934 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
1935 cur_flist->to_redo--;
1936
1937 cur_flist = flist;
1938
1939 csum_length = SHORT_SUM_LENGTH;
1940 max_size = -max_size;
1941 min_size = -min_size;
1942 ignore_existing = -ignore_existing;
1943 ignore_non_existing = -ignore_non_existing;
1944 update_only = -update_only;
1945 always_checksum = -always_checksum;
1946 size_only = -size_only;
1947 append_mode = -append_mode;
1948 make_backups = -make_backups;
1949 ignore_times--;
1950 }
1951
1952 while (cur_flist != first_flist) { /* only possible with inc_recurse */
1953 if (first_flist->in_progress || first_flist->to_redo)
1954 break;
1955
1956 if (!read_batch) {
1957 write_ndx(sock_f_out, NDX_DONE);
1958 maybe_flush_socket(1);
1959 }
1960
1961 if (delete_during == 2 || !dir_tweaking) {
1962 /* Skip directory touch-up. */
1963 } else if (first_flist->parent_ndx >= 0)
1964 touch_up_dirs(dir_flist, first_flist->parent_ndx);
1965
1966 flist_free(first_flist); /* updates first_flist */
1967 }
1968 }
1969
1970 void generate_files(int f_out, const char *local_name)
1971 {
1972 int i, ndx;
1973 char fbuf[MAXPATHLEN];
1974 int itemizing;
1975 enum logcode code;
1976 int save_do_progress = do_progress;
1977
1978 if (protocol_version >= 29) {
1979 itemizing = 1;
1980 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1981 code = logfile_format_has_i ? FNONE : FLOG;
1982 } else if (am_daemon) {
1983 itemizing = logfile_format_has_i && do_xfers;
1984 maybe_ATTRS_REPORT = ATTRS_REPORT;
1985 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1986 } else if (!am_server) {
1987 itemizing = stdout_format_has_i;
1988 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1989 code = itemizing ? FNONE : FINFO;
1990 } else {
1991 itemizing = 0;
1992 maybe_ATTRS_REPORT = ATTRS_REPORT;
1993 code = FINFO;
1994 }
1995 solo_file = local_name;
1996 dir_tweaking = !(list_only || solo_file || dry_run);
1997 need_retouch_dir_times = preserve_times > 1;
1998 lull_mod = allowed_lull * 5;
1999
2000 if (verbose > 2)
2001 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2002
2003 if (delete_before && !solo_file && cur_flist->used > 0)
2004 do_delete_pass();
2005 if (delete_during == 2) {
2006 deldelay_size = BIGPATHBUFLEN * 4;
2007 deldelay_buf = new_array(char, deldelay_size);
2008 if (!deldelay_buf)
2009 out_of_memory("delete-delay");
2010 }
2011 do_progress = 0;
2012
2013 if (append_mode > 0 || whole_file < 0)
2014 whole_file = 0;
2015 if (verbose >= 2) {
2016 rprintf(FINFO, "delta-transmission %s\n",
2017 whole_file
2018 ? "disabled for local transfer or --whole-file"
2019 : "enabled");
2020 }
2021
2022 /* Since we often fill up the outgoing socket and then just sit around
2023 * waiting for the other 2 processes to do their thing, we don't want
2024 * to exit on a timeout. If the data stops flowing, the receiver will
2025 * notice that and let us know via the redo pipe (or its closing). */
2026 ignore_timeout = 1;
2027
2028 dflt_perms = (ACCESSPERMS & ~orig_umask);
2029
2030 do {
2031 #ifdef SUPPORT_HARD_LINKS
2032 if (preserve_hard_links && inc_recurse) {
2033 while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2034 wait_for_receiver();
2035 }
2036 #endif
2037
2038 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2039 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2040 f_name(fp, fbuf);
2041 ndx = cur_flist->ndx_start - 1;
2042 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2043 if (delete_during && dry_run < 2) {
2044 if (BITS_SETnUNSET(fp->flags, FLAG_CONTENT_DIR, FLAG_MISSING_DIR)) {
2045 dev_t dirdev;
2046 if (one_file_system) {
2047 uint32 *devp = F_DIR_DEV_P(fp);
2048 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2049 } else
2050 dirdev = MAKEDEV(0, 0);
2051 delete_in_dir(f_name(fp, fbuf), fp, &dirdev);
2052 }
2053 }
2054 }
2055 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2056 struct file_struct *file = cur_flist->sorted[i];
2057
2058 if (!F_IS_ACTIVE(file))
2059 continue;
2060
2061 if (unsort_ndx)
2062 ndx = F_NDX(file);
2063 else
2064 ndx = i + cur_flist->ndx_start;
2065
2066 if (solo_file)
2067 strlcpy(fbuf, solo_file, sizeof fbuf);
2068 else
2069 f_name(file, fbuf);
2070 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2071
2072 check_for_finished_files(itemizing, code, 0);
2073
2074 if (allowed_lull && !(i % lull_mod))
2075 maybe_send_keepalive();
2076 else if (!(i & 0xFF))
2077 maybe_flush_socket(0);
2078 }
2079
2080 if (!inc_recurse) {
2081 write_ndx(f_out, NDX_DONE);
2082 break;
2083 }
2084
2085 while (1) {
2086 check_for_finished_files(itemizing, code, 1);
2087 if (cur_flist->next || flist_eof)
2088 break;
2089 wait_for_receiver();
2090 }
2091 } while ((cur_flist = cur_flist->next) != NULL);
2092
2093 if (delete_during)
2094 delete_in_dir(NULL, NULL, &dev_zero);
2095 phase++;
2096 if (verbose > 2)
2097 rprintf(FINFO, "generate_files phase=%d\n", phase);
2098
2099 while (1) {
2100 check_for_finished_files(itemizing, code, 1);
2101 if (msgdone_cnt)
2102 break;
2103 wait_for_receiver();
2104 }
2105
2106 phase++;
2107 if (verbose > 2)
2108 rprintf(FINFO, "generate_files phase=%d\n", phase);
2109
2110 write_ndx(f_out, NDX_DONE);
2111 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2112 if (protocol_version >= 29 && !delay_updates)
2113 write_ndx(f_out, NDX_DONE);
2114
2115 /* Read MSG_DONE for the redo phase (and any prior messages). */
2116 while (1) {
2117 check_for_finished_files(itemizing, code, 0);
2118 if (msgdone_cnt > 1)
2119 break;
2120 wait_for_receiver();
2121 }
2122
2123 if (protocol_version >= 29) {
2124 phase++;
2125 if (verbose > 2)
2126 rprintf(FINFO, "generate_files phase=%d\n", phase);
2127 if (delay_updates)
2128 write_ndx(f_out, NDX_DONE);
2129 /* Read MSG_DONE for delay-updates phase & prior messages. */
2130 while (msgdone_cnt == 2)
2131 wait_for_receiver();
2132 }
2133
2134 do_progress = save_do_progress;
2135 if (delete_during == 2)
2136 do_delayed_deletions(fbuf);
2137 if (delete_after && !solo_file && file_total > 0)
2138 do_delete_pass();
2139
2140 if ((need_retouch_dir_perms || need_retouch_dir_times)
2141 && dir_tweaking && (!inc_recurse || delete_during == 2))
2142 touch_up_dirs(dir_flist, -1);
2143
2144 if (max_delete >= 0 && deletion_count > max_delete) {
2145 rprintf(FINFO,
2146 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2147 deletion_count - max_delete);
2148 io_error |= IOERR_DEL_LIMIT;
2149 }
2150
2151 if (verbose > 2)
2152 rprintf(FINFO, "generate_files finished\n");
2153 }
rsync: a fast, versatile, remote (and local) file-copying tool