1 /* -*- c-file-style: "linux" -*-
3 rsync -- fast file replication program
5 Copyright (C) 1996-2000 by Andrew Tridgell
6 Copyright (C) Paul Mackerras 1996
7 Copyright (C) 2002 by Martin Pool <mbp@samba.org>
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.
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.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
28 extern int log_format_has_i;
29 extern int log_format_has_o_or_i;
30 extern int daemon_log_format_has_i;
35 extern int relative_paths;
36 extern int keep_dirlinks;
37 extern int preserve_links;
38 extern int preserve_devices;
39 extern int preserve_hard_links;
40 extern int preserve_perms;
41 extern int preserve_uid;
42 extern int preserve_gid;
43 extern int preserve_times;
44 extern int omit_dir_times;
45 extern int delete_before;
46 extern int delete_during;
47 extern int delete_after;
49 extern int ignore_errors;
50 extern int remove_sent_files;
51 extern int update_only;
52 extern int opt_ignore_existing;
54 extern int make_backups;
55 extern int csum_length;
56 extern int ignore_times;
58 extern OFF_T max_size;
59 extern int io_timeout;
61 extern int sock_f_out;
62 extern int ignore_timeout;
63 extern int protocol_version;
64 extern int fuzzy_basis;
65 extern int always_checksum;
66 extern char *partial_dir;
67 extern char *basis_dir[];
68 extern int compare_dest;
70 extern int whole_file;
71 extern int local_server;
73 extern int read_batch;
74 extern int only_existing;
75 extern int orig_umask;
76 extern int safe_symlinks;
77 extern long block_size; /* "long" because popt can't set an int32. */
78 extern int max_delete;
79 extern int force_delete;
80 extern int one_file_system;
81 extern struct stats stats;
82 extern dev_t filesystem_dev;
83 extern char *backup_dir;
84 extern char *backup_suffix;
85 extern int backup_suffix_len;
86 extern struct file_list *the_file_list;
87 extern struct filter_list_struct server_filter_list;
91 static int deletion_count = 0; /* used to implement --max-delete */
94 static int is_backup_file(char *fn)
96 int k = strlen(fn) - backup_suffix_len;
97 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
101 /* Delete a file or directory. If DEL_FORCE_RECURSE is set in the flags, or if
102 * force_delete is set, this will delete recursively as long as DEL_NO_RECURSE
103 * is not set in the flags. */
104 static int delete_item(char *fname, int mode, int flags)
106 struct file_list *dirlist;
107 char buf[MAXPATHLEN];
108 int j, dlen, zap_dir, ok;
111 if (!S_ISDIR(mode)) {
112 if (max_delete && ++deletion_count > max_delete)
114 if (make_backups && (backup_dir || !is_backup_file(fname)))
115 ok = make_backup(fname);
117 ok = robust_unlink(fname) == 0;
119 if (!(flags & DEL_TERSE))
120 log_delete(fname, mode);
123 if (errno == ENOENT) {
127 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
132 zap_dir = (flags & DEL_FORCE_RECURSE || (force_delete && recurse))
133 && !(flags & DEL_NO_RECURSE);
134 if ((max_delete && ++deletion_count > max_delete)
135 || (dry_run && zap_dir)) {
138 } else if (make_backups && !backup_dir && !is_backup_file(fname)
139 && !(flags & DEL_FORCE_RECURSE))
140 ok = make_backup(fname);
142 ok = do_rmdir(fname) == 0;
144 if (!(flags & DEL_TERSE))
145 log_delete(fname, mode);
148 if (errno == ENOENT) {
152 if (!zap_dir || (errno != ENOTEMPTY && errno != EEXIST)) {
153 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
157 flags |= DEL_FORCE_RECURSE; /* mark subdir dels as not "in the way" */
160 dlen = strlcpy(buf, fname, MAXPATHLEN);
161 save_filters = push_local_filters(buf, dlen);
163 dirlist = get_dirlist(buf, dlen, 0);
164 for (j = dirlist->count; j--; ) {
165 struct file_struct *fp = dirlist->files[j];
167 if (fp->flags & FLAG_MOUNT_POINT)
171 if (delete_item(buf, fp->mode, flags & ~DEL_TERSE) != 0) {
178 pop_local_filters(save_filters);
180 if (max_delete && ++deletion_count > max_delete)
183 if (do_rmdir(fname) == 0) {
184 if (!(flags & DEL_TERSE))
185 log_delete(fname, mode);
186 } else if (errno != ENOTEMPTY && errno != ENOENT) {
187 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
196 /* This function is used to implement per-directory deletion, and is used by
197 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
198 * MAXPATHLEN buffer with the name of the directory in it (the functions we
199 * call will append names onto the end, but the old dir value will be restored
201 static void delete_in_dir(struct file_list *flist, char *fbuf,
202 struct file_struct *file)
204 static int min_depth = MAXPATHLEN, cur_depth = -1;
205 static void *filt_array[MAXPATHLEN/2+1];
206 static int already_output_warning = 0;
207 struct file_list *dirlist;
208 char delbuf[MAXPATHLEN];
213 while (cur_depth >= min_depth)
214 pop_local_filters(filt_array[cur_depth--]);
215 min_depth = MAXPATHLEN;
221 rprintf(FINFO, "delete_in_dir(%s)\n", safe_fname(fbuf));
224 maybe_send_keepalive();
226 if (file->dir.depth >= MAXPATHLEN/2+1)
227 return; /* Impossible... */
229 if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
230 if (already_output_warning)
233 "IO error encountered -- skipping file deletion\n");
234 already_output_warning = 1;
238 while (cur_depth >= file->dir.depth && cur_depth >= min_depth)
239 pop_local_filters(filt_array[cur_depth--]);
240 cur_depth = file->dir.depth;
241 if (min_depth > cur_depth)
242 min_depth = cur_depth;
244 filt_array[cur_depth] = push_local_filters(fbuf, dlen);
246 if (link_stat(fbuf, &st, keep_dirlinks) < 0)
249 if (one_file_system && file->flags & FLAG_TOP_DIR)
250 filesystem_dev = st.st_dev;
252 dirlist = get_dirlist(fbuf, dlen, 0);
254 /* If an item in dirlist is not found in flist, delete it
255 * from the filesystem. */
256 for (i = dirlist->count; i--; ) {
257 if (!dirlist->files[i]->basename)
259 if (flist_find(flist, dirlist->files[i]) < 0) {
260 int mode = dirlist->files[i]->mode;
261 f_name_to(dirlist->files[i], delbuf);
262 if (delete_item(delbuf, mode, DEL_FORCE_RECURSE) < 0)
270 /* This deletes any files on the receiving side that are not present on the
271 * sending side. This is used by --delete-before and --delete-after. */
272 static void do_delete_pass(struct file_list *flist)
274 char fbuf[MAXPATHLEN];
277 if (dry_run > 1) /* destination doesn't exist yet */
280 for (j = 0; j < flist->count; j++) {
281 struct file_struct *file = flist->files[j];
283 if (!(file->flags & FLAG_DEL_HERE))
286 f_name_to(file, fbuf);
287 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
288 rprintf(FINFO, "deleting in %s\n", safe_fname(fbuf));
290 delete_in_dir(flist, fbuf, file);
294 static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
297 && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS))
300 if (am_root && preserve_uid && st->st_uid != file->uid)
303 if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid)
310 void itemize(struct file_struct *file, int ndx, int statret, STRUCT_STAT *st,
311 int32 iflags, char *hlink)
314 if (S_ISREG(file->mode) && file->length != st->st_size)
315 iflags |= ITEM_REPORT_SIZE;
316 if (!(iflags & ITEM_NO_DEST_AND_NO_UPDATE)) {
317 int keep_time = !preserve_times ? 0
318 : S_ISDIR(file->mode) ? !omit_dir_times
319 : !S_ISLNK(file->mode);
321 if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time)
322 || (keep_time && file->modtime != st->st_mtime))
323 iflags |= ITEM_REPORT_TIME;
324 if (preserve_perms && file->mode != st->st_mode)
325 iflags |= ITEM_REPORT_PERMS;
326 if (preserve_uid && am_root && file->uid != st->st_uid)
327 iflags |= ITEM_REPORT_OWNER;
328 if (preserve_gid && file->gid != GID_NONE
329 && st->st_gid != file->gid)
330 iflags |= ITEM_REPORT_GROUP;
333 iflags |= ITEM_IS_NEW;
334 if (!(iflags & (ITEM_HARD_LINKED|ITEM_LOCAL_CHANGE)))
335 iflags |= ITEM_TRANSFER;
339 if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
340 || (hlink && *hlink)) && !read_batch) {
341 if (protocol_version >= 29) {
343 write_int(sock_f_out, ndx);
344 write_shortint(sock_f_out, iflags);
346 write_vstring(sock_f_out, hlink, strlen(hlink));
348 log_item(file, &stats, iflags, hlink);
353 /* Perform our quick-check heuristic for determining if a file is unchanged. */
354 static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
356 if (st->st_size != file->length)
359 /* if always checksum is set then we use the checksum instead
360 of the file time to determine whether to sync */
361 if (always_checksum && S_ISREG(st->st_mode)) {
362 char sum[MD4_SUM_LENGTH];
363 file_checksum(fn, sum, st->st_size);
364 return memcmp(sum, file->u.sum, protocol_version < 21 ? 2
365 : MD4_SUM_LENGTH) == 0;
374 return cmp_modtime(st->st_mtime, file->modtime) == 0;
379 * set (initialize) the size entries in the per-file sum_struct
380 * calculating dynamic block and checksum sizes.
382 * This is only called from generate_and_send_sums() but is a separate
383 * function to encapsulate the logic.
385 * The block size is a rounded square root of file length.
387 * The checksum size is determined according to:
388 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
389 * provided by Donovan Baarda which gives a probability of rsync
390 * algorithm corrupting data and falling back using the whole md4
393 * This might be made one of several selectable heuristics.
395 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
401 blength = block_size;
402 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
403 blength = BLOCK_SIZE;
408 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
409 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
410 blength = MAX_BLOCK_SIZE;
415 if (len < (int64)blength * blength)
418 } while (c >= 8); /* round to multiple of 8 */
419 blength = MAX(blength, BLOCK_SIZE);
423 if (protocol_version < 27) {
424 s2length = csum_length;
425 } else if (csum_length == SUM_LENGTH) {
426 s2length = SUM_LENGTH;
430 int b = BLOCKSUM_BIAS;
431 for (l = len; l >>= 1; b += 2) {}
432 for (c = blength; c >>= 1 && b; b--) {}
433 /* add a bit, subtract rollsum, round up. */
434 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
435 s2length = MAX(s2length, csum_length);
436 s2length = MIN(s2length, SUM_LENGTH);
440 sum->blength = blength;
441 sum->s2length = s2length;
442 sum->count = (len + (blength - 1)) / blength;
443 sum->remainder = (len % blength);
445 if (sum->count && verbose > 2) {
447 "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
448 (double)sum->count, (long)sum->remainder, (long)sum->blength,
449 sum->s2length, (double)sum->flength);
455 * Generate and send a stream of signatures/checksums that describe a buffer
457 * Generate approximately one checksum every block_len bytes.
459 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
462 struct map_struct *mapbuf;
463 struct sum_struct sum;
466 sum_sizes_sqroot(&sum, len);
469 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
473 write_sum_head(f_out, &sum);
475 for (i = 0; i < sum.count; i++) {
476 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
477 char *map = map_ptr(mapbuf, offset, n1);
478 uint32 sum1 = get_checksum1(map, n1);
479 char sum2[SUM_LENGTH];
482 full_write(f_copy, map, n1);
484 get_checksum2(map, n1, sum2);
488 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
489 (double)i, (double)offset, (long)n1,
490 (unsigned long)sum1);
492 write_int(f_out, sum1);
493 write_buf(f_out, sum2, sum.s2length);
503 /* Try to find a filename in the same dir as "fname" with a similar name. */
504 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
506 int fname_len, fname_suf_len;
507 const char *fname_suf, *fname = file->basename;
508 uint32 lowest_dist = 0x7FFFFFFF;
509 int j, lowest_j = -1;
511 fname_len = strlen(fname);
512 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
514 for (j = 0; j < dirlist->count; j++) {
515 struct file_struct *fp = dirlist->files[j];
516 const char *suf, *name;
520 if (!S_ISREG(fp->mode) || !fp->length
521 || fp->flags & FLAG_NO_FUZZY)
526 if (fp->length == file->length
527 && fp->modtime == file->modtime) {
530 "fuzzy size/modtime match for %s\n",
537 suf = find_filename_suffix(name, len, &suf_len);
539 dist = fuzzy_distance(name, len, fname, fname_len);
540 /* Add some extra weight to how well the suffixes match. */
541 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
544 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
545 name, (int)(dist>>16), (int)(dist&0xFFFF));
547 if (dist <= lowest_dist) {
556 void check_for_finished_hlinks(int itemizing, enum logcode code)
558 struct file_struct *file;
561 while ((ndx = get_hlink_num()) != -1) {
562 if (ndx < 0 || ndx >= the_file_list->count)
565 file = the_file_list->files[ndx];
566 if (!file->link_u.links)
569 hard_link_cluster(file, ndx, itemizing, code);
573 static int phase = 0;
575 /* Acts on the_file_list->file's ndx'th item, whose name is fname. If a dir,
576 * make sure it exists, and has the right permissions/timestamp info. For
577 * all other non-regular files (symlinks, etc.) we create them here. For
578 * regular files that have changed, we try to find a basis file and then
579 * start sending checksums.
581 * Note that f_out is set to -1 when doing final directory-permission and
582 * modification-time repair. */
583 static void recv_generator(char *fname, struct file_struct *file, int ndx,
584 int itemizing, int maybe_PERMS_REPORT,
585 enum logcode code, int f_out, int f_out_name)
587 static int missing_below = -1, excluded_below = -1;
588 static char *fuzzy_dirname = NULL;
589 static struct file_list *fuzzy_dirlist = NULL;
590 struct file_struct *fuzzy_file = NULL;
591 int fd = -1, f_copy = -1;
592 STRUCT_STAT st, partial_st;
593 struct file_struct *back_file = NULL;
594 int statret, stat_errno;
595 char *fnamecmp, *partialptr, *backupptr = NULL;
596 char fnamecmpbuf[MAXPATHLEN];
604 flist_free(fuzzy_dirlist);
605 fuzzy_dirlist = NULL;
606 fuzzy_dirname = NULL;
608 if (missing_below >= 0) {
616 rprintf(FINFO, "recv_generator(%s,%d)\n",
617 safe_fname(fname), ndx);
620 if (server_filter_list.head) {
621 if (excluded_below >= 0) {
622 if (file->dir.depth > excluded_below)
626 if (check_filter(&server_filter_list, fname,
627 S_ISDIR(file->mode)) < 0) {
628 if (S_ISDIR(file->mode))
629 excluded_below = file->dir.depth;
633 "skipping server-excluded file \"%s\"\n",
640 if (missing_below >= 0 && file->dir.depth <= missing_below) {
648 if (fuzzy_basis && S_ISREG(file->mode)) {
649 char *dn = file->dirname ? file->dirname : ".";
650 /* Yes, identical dirnames are guaranteed to have
651 * identical pointers at this point. */
652 if (fuzzy_dirname != dn) {
654 flist_free(fuzzy_dirlist);
656 fuzzy_dirlist = get_dirlist(fuzzy_dirname, -1,
661 statret = link_stat(fname, &st,
662 keep_dirlinks && S_ISDIR(file->mode));
666 if (only_existing && statret == -1 && stat_errno == ENOENT) {
667 /* we only want to update existing files */
669 rprintf(FINFO, "not creating new file \"%s\"\n",
675 if (statret == 0 && !preserve_perms
676 && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) {
677 /* if the file exists already and we aren't perserving
678 * permissions then act as though the remote end sent
679 * us the file permissions we already have */
680 file->mode = (file->mode & ~CHMOD_BITS)
681 | (st.st_mode & CHMOD_BITS);
684 if (S_ISDIR(file->mode)) {
685 /* The file to be received is a directory, so we need
686 * to prepare appropriately. If there is already a
687 * file of that name and it is *not* a directory, then
688 * we need to delete it. If it doesn't exist, then
689 * (perhaps recursively) create it. */
690 if (statret == 0 && !S_ISDIR(st.st_mode)) {
691 delete_item(fname, st.st_mode, DEL_TERSE);
694 if (dry_run && statret != 0 && missing_below < 0) {
695 missing_below = file->dir.depth;
698 if (itemizing && f_out != -1) {
699 itemize(file, ndx, statret, &st,
700 statret ? ITEM_LOCAL_CHANGE : 0, NULL);
702 if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) {
703 if (!relative_paths || errno != ENOENT
704 || create_directory_path(fname, orig_umask) < 0
705 || do_mkdir(fname, file->mode) < 0) {
706 rsyserr(FERROR, errno,
707 "recv_generator: mkdir %s failed",
711 if (set_perms(fname, file, statret ? NULL : &st, 0)
712 && verbose && code && f_out != -1)
713 rprintf(code, "%s/\n", safe_fname(fname));
714 if (delete_during && f_out != -1 && !phase && dry_run < 2
715 && (file->flags & FLAG_DEL_HERE))
716 delete_in_dir(the_file_list, fname, file);
720 if (max_size && file->length > max_size) {
722 rprintf(FINFO, "%s is over max-size\n",
728 if (preserve_links && S_ISLNK(file->mode)) {
730 if (safe_symlinks && unsafe_symlink(file->u.link, fname)) {
733 "ignoring unsafe symlink %s -> \"%s\"\n",
735 safe_fname(file->u.link));
740 char lnk[MAXPATHLEN];
743 if (!S_ISDIR(st.st_mode)
744 && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) {
746 /* A link already pointing to the
747 * right place -- no further action
749 if (strcmp(lnk, file->u.link) == 0) {
751 itemize(file, ndx, 0, &st, 0,
754 set_perms(fname, file, &st,
759 /* Not the right symlink (or not a symlink), so
761 if (S_ISLNK(st.st_mode))
762 delete_item(fname, st.st_mode, DEL_TERSE);
764 delete_item(fname, st.st_mode, DEL_TERSE);
768 if (do_symlink(file->u.link,fname) != 0) {
769 rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
770 full_fname(fname), safe_fname(file->u.link));
772 set_perms(fname,file,NULL,0);
774 itemize(file, ndx, statret, &st,
775 ITEM_LOCAL_CHANGE, NULL);
777 if (code && verbose) {
778 rprintf(code, "%s -> %s\n", safe_fname(fname),
779 safe_fname(file->u.link));
781 if (remove_sent_files && !dry_run) {
783 SIVAL(numbuf, 0, ndx);
784 send_msg(MSG_SUCCESS, numbuf, 4);
791 if (am_root && preserve_devices && IS_DEVICE(file->mode)) {
793 st.st_mode != file->mode ||
794 st.st_rdev != file->u.rdev) {
795 delete_item(fname, st.st_mode, DEL_TERSE);
796 if (!IS_DEVICE(st.st_mode))
799 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
801 (int)file->mode, (int)file->u.rdev);
803 if (do_mknod(fname,file->mode,file->u.rdev) != 0) {
804 rsyserr(FERROR, errno, "mknod %s failed",
807 set_perms(fname,file,NULL,0);
809 itemize(file, ndx, statret, &st,
810 ITEM_LOCAL_CHANGE, NULL);
812 if (code && verbose) {
813 rprintf(code, "%s\n",
819 itemize(file, ndx, statret, &st, 0, NULL);
820 set_perms(fname, file, &st, maybe_PERMS_REPORT);
825 if (preserve_hard_links && hard_link_check(file, ndx, HL_CHECK_MASTER))
828 if (!S_ISREG(file->mode)) {
829 rprintf(FINFO, "skipping non-regular file \"%s\"\n",
834 if (opt_ignore_existing && statret == 0) {
836 rprintf(FINFO, "%s exists\n", safe_fname(fname));
840 if (update_only && statret == 0
841 && cmp_modtime(st.st_mtime, file->modtime) > 0) {
843 rprintf(FINFO, "%s is newer\n", safe_fname(fname));
848 fnamecmp_type = FNAMECMP_FNAME;
850 if (statret != 0 && basis_dir[0] != NULL) {
855 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
856 basis_dir[i], fname);
857 if (link_stat(fnamecmpbuf, &st, 0) < 0
858 || !S_ISREG(st.st_mode))
860 switch (match_level) {
866 if (!unchanged_file(fnamecmpbuf, file, &st))
872 if (!unchanged_attrs(file, &st))
879 } while (basis_dir[++i] != NULL);
882 if (i != best_match) {
884 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
885 basis_dir[i], fname);
886 if (link_stat(fnamecmpbuf, &st, 0) < 0) {
893 if (link_dest && match_level == 3) {
894 if (hard_link_one(file, ndx, fname, -1, &st,
896 itemizing && verbose > 1,
900 rsyserr(FINFO, errno, "link %s => %s",
901 full_fname(fnamecmpbuf),
907 if (compare_dest || (match_level && match_level < 3)) {
908 fnamecmp = fnamecmpbuf;
914 if (statret == 0 && !S_ISREG(st.st_mode)) {
915 if (delete_item(fname, st.st_mode, DEL_TERSE) != 0)
921 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
922 && link_stat(partialptr, &partial_st, 0) == 0
923 && S_ISREG(partial_st.st_mode)) {
925 goto prepare_to_open;
929 if (statret != 0 && fuzzy_basis && dry_run <= 1) {
930 int j = find_fuzzy(file, fuzzy_dirlist);
932 fuzzy_file = fuzzy_dirlist->files[j];
933 f_name_to(fuzzy_file, fnamecmpbuf);
935 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
936 safe_fname(fname), safe_fname(fnamecmpbuf));
938 st.st_mode = fuzzy_file->mode;
939 st.st_size = fuzzy_file->length;
940 st.st_mtime = fuzzy_file->modtime;
942 fnamecmp = fnamecmpbuf;
943 fnamecmp_type = FNAMECMP_FUZZY;
948 if (preserve_hard_links && hard_link_check(file, ndx, HL_SKIP))
950 if (stat_errno == ENOENT)
953 rsyserr(FERROR, stat_errno,
954 "recv_generator: failed to stat %s",
960 if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
962 else if (fnamecmp_type == FNAMECMP_FUZZY)
964 else if (unchanged_file(fnamecmp, file, &st)) {
965 if (fnamecmp_type == FNAMECMP_FNAME) {
967 itemize(file, ndx, statret, &st, 0, NULL);
968 set_perms(fname, file, &st, maybe_PERMS_REPORT);
969 if (preserve_hard_links && file->link_u.links)
970 hard_link_cluster(file, ndx, itemizing, code);
973 /* Only --compare-dest gets here. */
974 if (unchanged_attrs(file, &st)) {
975 itemize(file, ndx, statret, &st,
976 ITEM_NO_DEST_AND_NO_UPDATE, NULL);
984 fnamecmp = partialptr;
985 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
989 if (dry_run || read_batch || whole_file)
993 int j = flist_find(fuzzy_dirlist, file);
994 if (j >= 0) /* don't use changing file as future fuzzy basis */
995 fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY;
999 fd = do_open(fnamecmp, O_RDONLY, 0);
1002 rsyserr(FERROR, errno, "failed to open %s, continuing",
1003 full_fname(fnamecmp));
1005 /* pretend the file didn't exist */
1006 if (preserve_hard_links && hard_link_check(file, ndx, HL_SKIP))
1012 if (inplace && make_backups) {
1013 if (!(backupptr = get_backup_name(fname))) {
1017 if (!(back_file = make_file(fname, NULL, NO_FILTERS))) {
1019 goto pretend_missing;
1021 if (robust_unlink(backupptr) && errno != ENOENT) {
1022 rsyserr(FERROR, errno, "unlink %s",
1023 full_fname(backupptr));
1028 if ((f_copy = do_open(backupptr,
1029 O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1030 rsyserr(FERROR, errno, "open %s",
1031 full_fname(backupptr));
1036 fnamecmp_type = FNAMECMP_BACKUP;
1040 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1041 safe_fname(fnamecmp), (double)st.st_size);
1045 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1048 write_int(f_out, ndx);
1050 int iflags = ITEM_TRANSFER;
1051 if (always_checksum)
1052 iflags |= ITEM_REPORT_CHECKSUM;
1053 if (fnamecmp_type != FNAMECMP_FNAME)
1054 iflags |= ITEM_USING_ALT_BASIS;
1055 itemize(file, -1, statret, &st, iflags, NULL);
1057 if (f_out_name >= 0) {
1058 write_byte(f_out_name, fnamecmp_type);
1059 if (fnamecmp_type == FNAMECMP_FUZZY) {
1060 write_vstring(f_out_name, fuzzy_file->basename,
1061 strlen(fuzzy_file->basename));
1066 if (preserve_hard_links && file->link_u.links)
1067 hard_link_cluster(file, ndx, itemizing, code);
1073 if (statret != 0 || whole_file) {
1074 write_sum_head(f_out, NULL);
1078 generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1082 set_perms(backupptr, back_file, NULL, 0);
1084 rprintf(FINFO, "backed up %s to %s\n",
1085 safe_fname(fname), safe_fname(backupptr));
1094 void generate_files(int f_out, struct file_list *flist, char *local_name,
1098 char fbuf[MAXPATHLEN];
1099 int itemizing, maybe_PERMS_REPORT;
1101 int need_retouch_dir_times = preserve_times && !omit_dir_times;
1102 int need_retouch_dir_perms = 0;
1103 int save_only_existing = only_existing;
1104 int save_opt_ignore_existing = opt_ignore_existing;
1106 allowed_lull = read_batch ? 0 : (io_timeout + 1) / 2;
1107 lull_mod = allowed_lull * 5;
1109 if (protocol_version >= 29) {
1111 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1112 code = daemon_log_format_has_i ? 0 : FLOG;
1113 } else if (am_daemon) {
1114 itemizing = daemon_log_format_has_i && !dry_run;
1115 maybe_PERMS_REPORT = PERMS_REPORT;
1116 code = itemizing || dry_run ? FCLIENT : FINFO;
1117 } else if (!am_server) {
1118 itemizing = log_format_has_i;
1119 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1120 code = itemizing ? 0 : FINFO;
1123 maybe_PERMS_REPORT = PERMS_REPORT;
1128 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
1129 (long)getpid(), flist->count);
1132 if (delete_before && !local_name && flist->count > 0)
1133 do_delete_pass(flist);
1138 rprintf(FINFO, "delta-transmission %s\n",
1140 ? "disabled for local transfer or --whole-file"
1144 if (protocol_version < 29)
1147 for (i = 0; i < flist->count; i++) {
1148 struct file_struct *file = flist->files[i];
1150 if (!file->basename)
1153 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
1154 file, i, itemizing, maybe_PERMS_REPORT, code,
1157 /* We need to ensure that any dirs we create have writeable
1158 * permissions during the time we are putting files within
1159 * them. This is then fixed after the transfer is done. */
1160 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)) {
1161 int mode = file->mode | S_IWUSR; /* user write */
1162 char *fname = local_name ? local_name : fbuf;
1163 if (do_chmod(fname, mode & CHMOD_BITS) < 0) {
1164 rsyserr(FERROR, errno,
1165 "failed to modify permissions on %s",
1168 need_retouch_dir_perms = 1;
1171 if (preserve_hard_links)
1172 check_for_finished_hlinks(itemizing, code);
1174 if (allowed_lull && !(i % lull_mod))
1175 maybe_send_keepalive();
1177 recv_generator(NULL, NULL, 0, 0, 0, code, -1, -1);
1179 delete_in_dir(NULL, NULL, NULL);
1182 csum_length = SUM_LENGTH;
1183 only_existing = max_size = opt_ignore_existing = 0;
1184 update_only = always_checksum = size_only = 0;
1186 make_backups = 0; /* avoid a duplicate backup for inplace processing */
1188 /* We expect to just sit around now, so don't exit on a timeout.
1189 * If we really get a timeout then the other process should exit. */
1193 rprintf(FINFO,"generate_files phase=%d\n",phase);
1195 write_int(f_out, -1);
1197 /* files can cycle through the system more than once
1198 * to catch initial checksum errors */
1199 while ((i = get_redo_num(itemizing, code)) != -1) {
1200 struct file_struct *file = flist->files[i];
1201 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
1202 file, i, itemizing, maybe_PERMS_REPORT, code,
1207 only_existing = save_only_existing;
1208 opt_ignore_existing = save_opt_ignore_existing;
1211 rprintf(FINFO,"generate_files phase=%d\n",phase);
1213 write_int(f_out, -1);
1215 /* Read post-redo-phase MSG_DONE and any prior messages. */
1216 get_redo_num(itemizing, code);
1218 if (delete_after && !local_name && flist->count > 0)
1219 do_delete_pass(flist);
1221 if ((need_retouch_dir_perms || need_retouch_dir_times)
1222 && !list_only && !local_name && !dry_run) {
1224 /* Now we need to fix any directory permissions that were
1225 * modified during the transfer and/or re-set any tweaked
1226 * modified-time values. */
1227 for (i = 0; i < flist->count; i++) {
1228 struct file_struct *file = flist->files[i];
1229 if (!file->basename || !S_ISDIR(file->mode))
1231 if (!need_retouch_dir_times && file->mode & S_IWUSR)
1233 recv_generator(local_name ? local_name : f_name(file),
1234 file, i, itemizing, maybe_PERMS_REPORT,
1236 if (allowed_lull && !(j++ % lull_mod))
1237 maybe_send_keepalive();
1240 recv_generator(NULL, NULL, 0, 0, 0, code, -1, -1);
1242 if (max_delete > 0 && deletion_count > max_delete) {
1244 "Deletions stopped due to --max-delete limit (%d skipped)\n",
1245 deletion_count - max_delete);
1246 io_error |= IOERR_DEL_LIMIT;
1250 rprintf(FINFO,"generate_files finished\n");