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.
29 extern int log_format_has_i;
30 extern int log_format_has_o_or_i;
31 extern int daemon_log_format_has_i;
35 extern int do_progress;
37 extern int relative_paths;
38 extern int keep_dirlinks;
39 extern int preserve_links;
40 extern int preserve_devices;
41 extern int preserve_hard_links;
42 extern int preserve_perms;
43 extern int preserve_uid;
44 extern int preserve_gid;
45 extern int preserve_times;
46 extern int omit_dir_times;
47 extern int delete_before;
48 extern int delete_during;
49 extern int delete_after;
51 extern int ignore_errors;
52 extern int remove_sent_files;
53 extern int delay_updates;
54 extern int update_only;
55 extern int ignore_existing;
56 extern int ignore_non_existing;
58 extern int append_mode;
59 extern int make_backups;
60 extern int csum_length;
61 extern int ignore_times;
63 extern OFF_T max_size;
64 extern OFF_T min_size;
66 extern int allowed_lull;
67 extern int sock_f_out;
68 extern int ignore_timeout;
69 extern int protocol_version;
70 extern int fuzzy_basis;
71 extern int always_checksum;
72 extern int checksum_len;
73 extern char *partial_dir;
74 extern char *basis_dir[];
75 extern int compare_dest;
78 extern int whole_file;
80 extern int read_batch;
81 extern int orig_umask;
82 extern int safe_symlinks;
83 extern long block_size; /* "long" because popt can't set an int32. */
84 extern int max_delete;
85 extern int force_delete;
86 extern int one_file_system;
87 extern struct stats stats;
88 extern dev_t filesystem_dev;
89 extern char *backup_dir;
90 extern char *backup_suffix;
91 extern int backup_suffix_len;
92 extern struct file_list *the_file_list;
93 extern struct filter_list_struct server_filter_list;
95 static int deletion_count = 0; /* used to implement --max-delete */
96 static int can_link_symlinks = 1; /* start out optimistic */
97 static int can_link_devices = 1;
99 /* For calling delete_file() */
100 #define DEL_FORCE_RECURSE (1<<1) /* recurse even w/o --force */
101 #define DEL_TERSE (1<<3)
104 static int is_backup_file(char *fn)
106 int k = strlen(fn) - backup_suffix_len;
107 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
111 /* Delete a file or directory. If DEL_FORCE_RECURSE is set in the flags, or if
112 * force_delete is set, this will delete recursively.
114 * Note that fname must point to a MAXPATHLEN buffer if the mode indicates it's
115 * a directory! (The buffer is used for recursion, but returned unchanged.)
117 static int delete_item(char *fname, int mode, int flags)
119 struct file_list *dirlist;
120 int j, dlen, zap_dir, ok;
125 if (!S_ISDIR(mode)) {
126 if (max_delete && ++deletion_count > max_delete)
128 if (make_backups && (backup_dir || !is_backup_file(fname)))
129 ok = make_backup(fname);
131 ok = robust_unlink(fname) == 0;
133 if (!(flags & DEL_TERSE))
134 log_delete(fname, mode);
137 if (errno == ENOENT) {
141 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
146 zap_dir = flags & DEL_FORCE_RECURSE || (force_delete && recurse);
147 if ((max_delete && ++deletion_count > max_delete)
148 || (dry_run && zap_dir)) {
151 } else if (make_backups && !backup_dir && !is_backup_file(fname)
152 && !(flags & DEL_FORCE_RECURSE))
153 ok = make_backup(fname);
155 ok = do_rmdir(fname) == 0;
157 if (!(flags & DEL_TERSE))
158 log_delete(fname, mode);
161 if (errno == ENOENT) {
166 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
170 flags |= DEL_FORCE_RECURSE; /* mark subdir dels as not "in the way" */
173 dlen = strlen(fname);
174 save_filters = push_local_filters(fname, dlen);
176 dirlist = get_dirlist(fname, dlen, 0);
179 if (dlen != 1 || *fname != '/')
181 remainder = MAXPATHLEN - (p - fname);
183 for (j = dirlist->count; j--; ) {
184 struct file_struct *fp = dirlist->files[j];
186 if (fp->flags & FLAG_MOUNT_POINT)
189 strlcpy(p, fp->basename, remainder);
190 delete_item(fname, fp->mode, flags & ~DEL_TERSE);
196 pop_local_filters(save_filters);
198 if (max_delete && ++deletion_count > max_delete)
201 if (do_rmdir(fname) == 0) {
202 if (!(flags & DEL_TERSE))
203 log_delete(fname, mode);
204 } else if (errno != ENOTEMPTY && errno != EEXIST && errno != ENOENT) {
205 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
214 /* This function is used to implement per-directory deletion, and is used by
215 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
216 * MAXPATHLEN buffer with the name of the directory in it (the functions we
217 * call will append names onto the end, but the old dir value will be restored
219 static void delete_in_dir(struct file_list *flist, char *fbuf,
220 struct file_struct *file, STRUCT_STAT *stp)
222 static int min_depth = MAXPATHLEN, cur_depth = -1;
223 static void *filt_array[MAXPATHLEN/2+1];
224 static int already_warned = 0;
225 struct file_list *dirlist;
226 char delbuf[MAXPATHLEN];
230 while (cur_depth >= min_depth)
231 pop_local_filters(filt_array[cur_depth--]);
232 min_depth = MAXPATHLEN;
238 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
241 maybe_send_keepalive();
243 if (file->dir.depth >= MAXPATHLEN/2+1)
244 return; /* Impossible... */
246 if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
250 "IO error encountered -- skipping file deletion\n");
255 while (cur_depth >= file->dir.depth && cur_depth >= min_depth)
256 pop_local_filters(filt_array[cur_depth--]);
257 cur_depth = file->dir.depth;
258 if (min_depth > cur_depth)
259 min_depth = cur_depth;
261 filt_array[cur_depth] = push_local_filters(fbuf, dlen);
263 if (one_file_system) {
264 if (file->flags & FLAG_TOP_DIR)
265 filesystem_dev = stp->st_dev;
266 else if (filesystem_dev != stp->st_dev)
270 dirlist = get_dirlist(fbuf, dlen, 0);
272 /* If an item in dirlist is not found in flist, delete it
273 * from the filesystem. */
274 for (i = dirlist->count; i--; ) {
275 struct file_struct *fp = dirlist->files[i];
276 if (!fp->basename || fp->flags & FLAG_MOUNT_POINT)
278 if (flist_find(flist, fp) < 0) {
281 delete_item(delbuf, mode, DEL_FORCE_RECURSE);
288 /* This deletes any files on the receiving side that are not present on the
289 * sending side. This is used by --delete-before and --delete-after. */
290 static void do_delete_pass(struct file_list *flist)
292 char fbuf[MAXPATHLEN];
296 if (dry_run > 1 /* destination doesn't exist yet */
300 for (j = 0; j < flist->count; j++) {
301 struct file_struct *file = flist->files[j];
303 if (!(file->flags & FLAG_DEL_HERE))
307 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
308 rprintf(FINFO, "deleting in %s\n", fbuf);
310 if (link_stat(fbuf, &st, keep_dirlinks) < 0
311 || !S_ISDIR(st.st_mode))
314 delete_in_dir(flist, fbuf, file, &st);
316 delete_in_dir(NULL, NULL, NULL, NULL);
318 if (do_progress && !am_server)
319 rprintf(FINFO, " \r");
322 int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
325 && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS))
328 if (am_root && preserve_uid && st->st_uid != file->ids->uid)
331 if (preserve_gid && file->ids->gid != GID_NONE && st->st_gid != file->ids->gid)
337 void itemize(struct file_struct *file, int ndx, int statret, STRUCT_STAT *st,
338 int32 iflags, uchar fnamecmp_type, char *xname)
340 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
341 int keep_time = !preserve_times ? 0
342 : S_ISDIR(file->mode) ? !omit_dir_times
343 : !S_ISLNK(file->mode);
345 if (S_ISREG(file->mode) && file->length != st->st_size)
346 iflags |= ITEM_REPORT_SIZE;
347 if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
348 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
349 || (keep_time && cmp_modtime(file->modtime, st->st_mtime) != 0))
350 iflags |= ITEM_REPORT_TIME;
352 && (file->mode & CHMOD_BITS) != (st->st_mode & CHMOD_BITS))
353 iflags |= ITEM_REPORT_PERMS;
354 if (preserve_uid && am_root && file->ids->uid != st->st_uid)
355 iflags |= ITEM_REPORT_OWNER;
356 if (preserve_gid && file->ids->gid != GID_NONE
357 && st->st_gid != file->ids->gid)
358 iflags |= ITEM_REPORT_GROUP;
360 iflags |= ITEM_IS_NEW;
363 if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
364 || log_format_has_i > 1 || (xname && *xname)) && !read_batch) {
365 if (protocol_version >= 29) {
367 write_int(sock_f_out, ndx);
368 write_shortint(sock_f_out, iflags);
369 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
370 write_byte(sock_f_out, fnamecmp_type);
371 if (iflags & ITEM_XNAME_FOLLOWS)
372 write_vstring(sock_f_out, xname, strlen(xname));
374 log_item(file, &stats, iflags, xname);
379 /* Perform our quick-check heuristic for determining if a file is unchanged. */
380 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
382 if (st->st_size != file->length)
385 /* if always checksum is set then we use the checksum instead
386 of the file time to determine whether to sync */
387 if (always_checksum && S_ISREG(st->st_mode)) {
388 char sum[MD4_SUM_LENGTH];
389 file_checksum(fn, sum, st->st_size);
390 return memcmp(sum, file->u.sum, checksum_len) == 0;
399 return cmp_modtime(st->st_mtime, file->modtime) == 0;
404 * set (initialize) the size entries in the per-file sum_struct
405 * calculating dynamic block and checksum sizes.
407 * This is only called from generate_and_send_sums() but is a separate
408 * function to encapsulate the logic.
410 * The block size is a rounded square root of file length.
412 * The checksum size is determined according to:
413 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
414 * provided by Donovan Baarda which gives a probability of rsync
415 * algorithm corrupting data and falling back using the whole md4
418 * This might be made one of several selectable heuristics.
420 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
426 blength = block_size;
427 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
428 blength = BLOCK_SIZE;
433 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
434 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
435 blength = MAX_BLOCK_SIZE;
440 if (len < (int64)blength * blength)
443 } while (c >= 8); /* round to multiple of 8 */
444 blength = MAX(blength, BLOCK_SIZE);
448 if (protocol_version < 27) {
449 s2length = csum_length;
450 } else if (csum_length == SUM_LENGTH) {
451 s2length = SUM_LENGTH;
455 int b = BLOCKSUM_BIAS;
456 for (l = len; l >>= 1; b += 2) {}
457 for (c = blength; c >>= 1 && b; b--) {}
458 /* add a bit, subtract rollsum, round up. */
459 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
460 s2length = MAX(s2length, csum_length);
461 s2length = MIN(s2length, SUM_LENGTH);
465 sum->blength = blength;
466 sum->s2length = s2length;
467 sum->remainder = len % blength;
468 sum->count = len / blength + (sum->remainder != 0);
470 if (sum->count && verbose > 2) {
472 "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
473 (double)sum->count, (long)sum->remainder, (long)sum->blength,
474 sum->s2length, (double)sum->flength);
480 * Generate and send a stream of signatures/checksums that describe a buffer
482 * Generate approximately one checksum every block_len bytes.
484 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
487 struct map_struct *mapbuf;
488 struct sum_struct sum;
491 sum_sizes_sqroot(&sum, len);
492 write_sum_head(f_out, &sum);
494 if (append_mode > 0 && f_copy < 0)
498 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
502 for (i = 0; i < sum.count; i++) {
503 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
504 char *map = map_ptr(mapbuf, offset, n1);
505 char sum2[SUM_LENGTH];
512 full_write(f_copy, map, n1);
517 sum1 = get_checksum1(map, n1);
518 get_checksum2(map, n1, sum2);
522 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
523 (double)i, (double)offset - n1, (long)n1,
524 (unsigned long)sum1);
526 write_int(f_out, sum1);
527 write_buf(f_out, sum2, sum.s2length);
535 /* Try to find a filename in the same dir as "fname" with a similar name. */
536 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
538 int fname_len, fname_suf_len;
539 const char *fname_suf, *fname = file->basename;
540 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
541 int j, lowest_j = -1;
543 fname_len = strlen(fname);
544 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
546 for (j = 0; j < dirlist->count; j++) {
547 struct file_struct *fp = dirlist->files[j];
548 const char *suf, *name;
552 if (!S_ISREG(fp->mode) || !fp->length
553 || fp->flags & FLAG_NO_FUZZY)
558 if (fp->length == file->length
559 && cmp_modtime(fp->modtime, file->modtime) == 0) {
562 "fuzzy size/modtime match for %s\n",
569 suf = find_filename_suffix(name, len, &suf_len);
571 dist = fuzzy_distance(name, len, fname, fname_len);
572 /* Add some extra weight to how well the suffixes match. */
573 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
576 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
577 name, (int)(dist>>16), (int)(dist&0xFFFF));
579 if (dist <= lowest_dist) {
588 void check_for_finished_hlinks(int itemizing, enum logcode code)
590 struct file_struct *file;
593 while ((ndx = get_hlink_num()) != -1) {
594 if (ndx < 0 || ndx >= the_file_list->count)
597 file = the_file_list->files[ndx];
598 if (!file->link_u.links)
601 hard_link_cluster(file, ndx, itemizing, code);
605 /* This is only called for regular files. We return -2 if we've finished
606 * handling the file, -1 if no dest-linking occurred, or a non-negative
607 * value if we found an alternate basis file. */
608 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
609 char *cmpbuf, STRUCT_STAT *stp, int itemizing,
610 int maybe_PERMS_REPORT, enum logcode code)
617 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
618 if (link_stat(cmpbuf, stp, 0) < 0 || !S_ISREG(stp->st_mode))
620 switch (match_level) {
626 if (!unchanged_file(cmpbuf, file, stp))
632 if (!unchanged_attrs(file, stp))
634 if ((always_checksum || ignore_times)
635 && cmp_modtime(stp->st_mtime, file->modtime))
642 } while (basis_dir[++j] != NULL);
647 if (j != best_match) {
649 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
650 if (link_stat(cmpbuf, stp, 0) < 0)
655 if (match_level == 3 && !copy_dest) {
657 if (hard_link_one(file, ndx, fname, 0, stp,
659 itemizing && verbose > 1,
662 if (preserve_hard_links && file->link_u.links)
663 hard_link_cluster(file, ndx, itemizing, code);
664 } else if (itemizing)
665 itemize(file, ndx, 0, stp, 0, 0, NULL);
666 if (verbose > 1 && maybe_PERMS_REPORT) {
667 code = daemon_log_format_has_i || dry_run
669 rprintf(code, "%s is uptodate\n", fname);
675 if (match_level >= 2) {
676 try_a_copy: /* Copy the file locally. */
677 if (copy_file(cmpbuf, fname, file->mode) < 0) {
679 rsyserr(FINFO, errno, "copy_file %s => %s",
680 full_fname(cmpbuf), fname);
685 itemize(file, ndx, 0, stp, ITEM_LOCAL_CHANGE, 0, NULL);
686 set_perms(fname, file, NULL, 0);
687 if (maybe_PERMS_REPORT
688 && ((!itemizing && verbose && match_level == 2)
689 || (verbose > 1 && match_level == 3))) {
690 code = daemon_log_format_has_i || dry_run
692 rprintf(code, "%s%s\n", fname,
693 match_level == 3 ? " is uptodate" : "");
695 if (preserve_hard_links && file->link_u.links)
696 hard_link_cluster(file, ndx, itemizing, code);
700 return FNAMECMP_BASIS_DIR_LOW + j;
703 /* This is only called for non-regular files. We return -2 if we've finished
704 * handling the file, or -1 if no dest-linking occurred. */
705 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
706 int itemizing, int *possible_ptr,
707 int maybe_PERMS_REPORT, enum logcode code)
709 char fnamebuf[MAXPATHLEN], lnk[MAXPATHLEN];
714 pathjoin(fnamebuf, MAXPATHLEN, basis_dir[i], fname);
715 if (link_stat(fnamebuf, &st, 0) < 0 || S_ISDIR(st.st_mode)
716 || !unchanged_attrs(file, &st))
718 if (S_ISLNK(file->mode)) {
720 if ((len = readlink(fnamebuf, lnk, MAXPATHLEN-1)) <= 0)
723 if (strcmp(lnk, file->u.link) != 0)
727 if (!IS_DEVICE(st.st_mode) || st.st_rdev != file->u.rdev)
731 if (do_link(fnamebuf, fname) < 0) {
732 /* TODO improve this to be based on errno? */
736 if (preserve_hard_links && file->link_u.links)
737 hard_link_cluster(file, ndx, itemizing, code);
739 if (itemizing && log_format_has_i && verbose > 1) {
740 int changes = compare_dest ? 0 : ITEM_LOCAL_CHANGE
741 + (link_dest ? ITEM_XNAME_FOLLOWS : 0);
742 char *lp = link_dest ? "" : NULL;
743 itemize(file, ndx, 0, &st, changes, 0, lp);
745 if (verbose > 1 && maybe_PERMS_REPORT) {
746 code = daemon_log_format_has_i || dry_run
748 rprintf(code, "%s is uptodate\n", fname);
751 } while (basis_dir[++i] != NULL);
756 static int phase = 0;
758 /* Acts on the_file_list->file's ndx'th item, whose name is fname. If a dir,
759 * make sure it exists, and has the right permissions/timestamp info. For
760 * all other non-regular files (symlinks, etc.) we create them here. For
761 * regular files that have changed, we try to find a basis file and then
762 * start sending checksums.
764 * When fname is non-null, it must point to a MAXPATHLEN buffer!
766 * Note that f_out is set to -1 when doing final directory-permission and
767 * modification-time repair. */
768 static void recv_generator(char *fname, struct file_struct *file, int ndx,
769 int itemizing, int maybe_PERMS_REPORT,
770 enum logcode code, int f_out)
772 static int missing_below = -1, excluded_below = -1;
773 static char *fuzzy_dirname = "";
774 static struct file_list *fuzzy_dirlist = NULL;
775 struct file_struct *fuzzy_file = NULL;
776 int fd = -1, f_copy = -1;
777 STRUCT_STAT st, real_st, partial_st;
778 struct file_struct *back_file = NULL;
779 int statret, real_ret, stat_errno;
780 char *fnamecmp, *partialptr, *backupptr = NULL;
781 char fnamecmpbuf[MAXPATHLEN];
789 flist_free(fuzzy_dirlist);
790 fuzzy_dirlist = NULL;
793 if (missing_below >= 0) {
801 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
803 if (server_filter_list.head) {
804 if (excluded_below >= 0) {
805 if (file->dir.depth > excluded_below)
809 if (check_filter(&server_filter_list, fname,
810 S_ISDIR(file->mode)) < 0) {
811 if (S_ISDIR(file->mode))
812 excluded_below = file->dir.depth;
816 "skipping server-excluded file \"%s\"\n",
823 if (missing_below >= 0 && file->dir.depth <= missing_below) {
831 if (fuzzy_basis && S_ISREG(file->mode)) {
832 char *dn = file->dirname ? file->dirname : ".";
833 if (fuzzy_dirname != dn
834 && strcmp(fuzzy_dirname, dn) != 0) {
836 flist_free(fuzzy_dirlist);
837 fuzzy_dirlist = get_dirlist(dn, -1, 1);
842 statret = link_stat(fname, &st,
843 keep_dirlinks && S_ISDIR(file->mode));
847 if (ignore_non_existing && statret == -1 && stat_errno == ENOENT) {
849 rprintf(FINFO, "not creating new %s \"%s\"\n",
850 S_ISDIR(file->mode) ? "directory" : "file",
856 if (statret == 0 && !preserve_perms
857 && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) {
858 /* if the file exists already and we aren't perserving
859 * permissions then act as though the remote end sent
860 * us the file permissions we already have */
861 file->mode = (file->mode & ~CHMOD_BITS)
862 | (st.st_mode & CHMOD_BITS);
865 if (S_ISDIR(file->mode)) {
866 /* The file to be received is a directory, so we need
867 * to prepare appropriately. If there is already a
868 * file of that name and it is *not* a directory, then
869 * we need to delete it. If it doesn't exist, then
870 * (perhaps recursively) create it. */
871 if (statret == 0 && !S_ISDIR(st.st_mode)) {
872 if (delete_item(fname, st.st_mode, DEL_TERSE) < 0)
876 if (dry_run && statret != 0 && missing_below < 0) {
877 missing_below = file->dir.depth;
880 if (itemizing && f_out != -1) {
881 itemize(file, ndx, statret, &st,
882 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
884 if (statret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
885 if (!relative_paths || errno != ENOENT
886 || create_directory_path(fname, orig_umask) < 0
887 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
888 rsyserr(FERROR, errno,
889 "recv_generator: mkdir %s failed",
893 if (set_perms(fname, file, statret ? NULL : &st, 0)
894 && verbose && code && f_out != -1)
895 rprintf(code, "%s/\n", fname);
896 if (delete_during && f_out != -1 && !phase && dry_run < 2
897 && (file->flags & FLAG_DEL_HERE))
898 delete_in_dir(the_file_list, fname, file, &st);
902 if (preserve_hard_links && file->link_u.links
903 && hard_link_check(file, ndx, fname, statret, &st,
904 itemizing, code, HL_CHECK_MASTER))
907 if (preserve_links && S_ISLNK(file->mode)) {
909 if (safe_symlinks && unsafe_symlink(file->u.link, fname)) {
911 if (the_file_list->count == 1)
912 fname = f_name(file, NULL);
914 "ignoring unsafe symlink %s -> \"%s\"\n",
915 full_fname(fname), file->u.link);
920 char lnk[MAXPATHLEN];
923 if (!S_ISDIR(st.st_mode)
924 && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) {
926 /* A link already pointing to the
927 * right place -- no further action
929 if (strcmp(lnk, file->u.link) == 0) {
931 itemize(file, ndx, 0, &st, 0,
934 set_perms(fname, file, &st,
936 if (preserve_hard_links
937 && file->link_u.links) {
938 hard_link_cluster(file, ndx,
945 /* Not the right symlink (or not a symlink), so
947 if (delete_item(fname, st.st_mode, DEL_TERSE) < 0)
949 if (!S_ISLNK(st.st_mode))
951 } else if (basis_dir[0] != NULL && can_link_symlinks) {
952 if (try_dests_non(file, fname, ndx, itemizing,
954 maybe_PERMS_REPORT, code) == -2) {
957 itemizing = code = 0;
960 if (preserve_hard_links && file->link_u.links
961 && hard_link_check(file, ndx, fname, -1, &st,
962 itemizing, code, HL_SKIP))
964 if (do_symlink(file->u.link,fname) != 0) {
965 rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
966 full_fname(fname), file->u.link);
968 set_perms(fname,file,NULL,0);
970 itemize(file, ndx, statret, &st,
971 ITEM_LOCAL_CHANGE, 0, NULL);
973 if (code && verbose) {
974 rprintf(code, "%s -> %s\n", fname,
977 if (remove_sent_files && !dry_run) {
979 SIVAL(numbuf, 0, ndx);
980 send_msg(MSG_SUCCESS, numbuf, 4);
982 if (preserve_hard_links && file->link_u.links)
983 hard_link_cluster(file, ndx, itemizing, code);
989 if (am_root && preserve_devices && IS_DEVICE(file->mode)) {
991 && (basis_dir[0] != NULL && can_link_devices)) {
992 if (try_dests_non(file, fname, ndx, itemizing,
994 maybe_PERMS_REPORT, code) == -2) {
997 itemizing = code = 0;
1001 || (st.st_mode & ~CHMOD_BITS) != (file->mode & ~CHMOD_BITS)
1002 || st.st_rdev != file->u.rdev) {
1004 && delete_item(fname, st.st_mode, DEL_TERSE) < 0)
1006 if (preserve_hard_links && file->link_u.links
1007 && hard_link_check(file, ndx, fname, -1, &st,
1008 itemizing, code, HL_SKIP))
1010 if (!IS_DEVICE(st.st_mode))
1013 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
1015 (int)file->mode, (int)file->u.rdev);
1017 if (do_mknod(fname,file->mode,file->u.rdev) < 0) {
1018 rsyserr(FERROR, errno, "mknod %s failed",
1021 set_perms(fname,file,NULL,0);
1023 itemize(file, ndx, statret, &st,
1024 ITEM_LOCAL_CHANGE, 0, NULL);
1026 if (code && verbose)
1027 rprintf(code, "%s\n", fname);
1028 if (preserve_hard_links && file->link_u.links) {
1029 hard_link_cluster(file, ndx,
1035 itemize(file, ndx, statret, &st, 0, 0, NULL);
1036 set_perms(fname, file, &st, maybe_PERMS_REPORT);
1037 if (preserve_hard_links && file->link_u.links)
1038 hard_link_cluster(file, ndx, itemizing, code);
1043 if (!S_ISREG(file->mode)) {
1044 if (the_file_list->count == 1)
1045 fname = f_name(file, NULL);
1046 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1050 if (max_size && file->length > max_size) {
1052 if (the_file_list->count == 1)
1053 fname = f_name(file, NULL);
1054 rprintf(FINFO, "%s is over max-size\n", fname);
1058 if (min_size && file->length < min_size) {
1060 if (the_file_list->count == 1)
1061 fname = f_name(file, NULL);
1062 rprintf(FINFO, "%s is under min-size\n", fname);
1067 if (ignore_existing && statret == 0) {
1069 rprintf(FINFO, "%s exists\n", fname);
1073 if (update_only && statret == 0
1074 && cmp_modtime(st.st_mtime, file->modtime) > 0) {
1076 rprintf(FINFO, "%s is newer\n", fname);
1081 fnamecmp_type = FNAMECMP_FNAME;
1083 if (statret == 0 && !S_ISREG(st.st_mode)) {
1084 if (delete_item(fname, st.st_mode, DEL_TERSE) != 0)
1087 stat_errno = ENOENT;
1090 if (statret != 0 && basis_dir[0] != NULL) {
1091 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &st,
1092 itemizing, maybe_PERMS_REPORT, code);
1096 fnamecmp = fnamecmpbuf;
1105 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1106 && link_stat(partialptr, &partial_st, 0) == 0
1107 && S_ISREG(partial_st.st_mode)) {
1109 goto prepare_to_open;
1113 if (statret != 0 && fuzzy_basis && dry_run <= 1) {
1114 int j = find_fuzzy(file, fuzzy_dirlist);
1116 fuzzy_file = fuzzy_dirlist->files[j];
1117 f_name(fuzzy_file, fnamecmpbuf);
1119 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1120 fname, fnamecmpbuf);
1122 st.st_size = fuzzy_file->length;
1124 fnamecmp = fnamecmpbuf;
1125 fnamecmp_type = FNAMECMP_FUZZY;
1130 if (preserve_hard_links && file->link_u.links
1131 && hard_link_check(file, ndx, fname, statret, &st,
1132 itemizing, code, HL_SKIP))
1134 if (stat_errno == ENOENT)
1136 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1141 if (append_mode && st.st_size > file->length)
1144 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1146 else if (fnamecmp_type == FNAMECMP_FUZZY)
1148 else if (unchanged_file(fnamecmp, file, &st)) {
1150 do_unlink(partialptr);
1151 handle_partial_dir(partialptr, PDIR_DELETE);
1154 itemize(file, ndx, real_ret, &real_st,
1157 set_perms(fname, file, &st, maybe_PERMS_REPORT);
1158 if (preserve_hard_links && file->link_u.links)
1159 hard_link_cluster(file, ndx, itemizing, code);
1166 fnamecmp = partialptr;
1167 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1171 if (!do_xfers || read_batch || whole_file)
1175 int j = flist_find(fuzzy_dirlist, file);
1176 if (j >= 0) /* don't use changing file as future fuzzy basis */
1177 fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY;
1181 fd = do_open(fnamecmp, O_RDONLY, 0);
1184 rsyserr(FERROR, errno, "failed to open %s, continuing",
1185 full_fname(fnamecmp));
1187 /* pretend the file didn't exist */
1188 if (preserve_hard_links && file->link_u.links
1189 && hard_link_check(file, ndx, fname, statret, &st,
1190 itemizing, code, HL_SKIP))
1192 statret = real_ret = -1;
1196 if (inplace && make_backups && fnamecmp_type == FNAMECMP_FNAME) {
1197 if (!(backupptr = get_backup_name(fname))) {
1201 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1203 goto pretend_missing;
1205 if (robust_unlink(backupptr) && errno != ENOENT) {
1206 rsyserr(FERROR, errno, "unlink %s",
1207 full_fname(backupptr));
1212 if ((f_copy = do_open(backupptr,
1213 O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1214 rsyserr(FERROR, errno, "open %s",
1215 full_fname(backupptr));
1220 fnamecmp_type = FNAMECMP_BACKUP;
1224 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1225 fnamecmp, (double)st.st_size);
1229 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1232 write_int(f_out, ndx);
1234 int iflags = ITEM_TRANSFER;
1235 if (always_checksum)
1236 iflags |= ITEM_REPORT_CHECKSUM;
1237 if (fnamecmp_type != FNAMECMP_FNAME)
1238 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1239 if (fnamecmp_type == FNAMECMP_FUZZY)
1240 iflags |= ITEM_XNAME_FOLLOWS;
1241 itemize(file, -1, real_ret, &real_st, iflags, fnamecmp_type,
1242 fuzzy_file ? fuzzy_file->basename : NULL);
1246 if (preserve_hard_links && file->link_u.links)
1247 hard_link_cluster(file, ndx, itemizing, code);
1253 if (statret != 0 || whole_file) {
1254 write_sum_head(f_out, NULL);
1258 generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1262 set_perms(backupptr, back_file, NULL, 0);
1264 rprintf(FINFO, "backed up %s to %s\n",
1273 void generate_files(int f_out, struct file_list *flist, char *local_name)
1276 char fbuf[MAXPATHLEN];
1277 int itemizing, maybe_PERMS_REPORT;
1279 int lull_mod = allowed_lull * 5;
1280 int need_retouch_dir_times = preserve_times && !omit_dir_times;
1281 int need_retouch_dir_perms = 0;
1282 int save_ignore_existing = ignore_existing;
1283 int save_ignore_non_existing = ignore_non_existing;
1284 int save_do_progress = do_progress;
1285 int save_make_backups = make_backups;
1287 if (protocol_version >= 29) {
1289 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1290 code = daemon_log_format_has_i ? 0 : FLOG;
1291 } else if (am_daemon) {
1292 itemizing = daemon_log_format_has_i && do_xfers;
1293 maybe_PERMS_REPORT = PERMS_REPORT;
1294 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1295 } else if (!am_server) {
1296 itemizing = log_format_has_i;
1297 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1298 code = itemizing ? 0 : FINFO;
1301 maybe_PERMS_REPORT = PERMS_REPORT;
1306 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
1307 (long)getpid(), flist->count);
1310 if (delete_before && !local_name && flist->count > 0)
1311 do_delete_pass(flist);
1314 if (append_mode || whole_file < 0)
1317 rprintf(FINFO, "delta-transmission %s\n",
1319 ? "disabled for local transfer or --whole-file"
1323 /* Since we often fill up the outgoing socket and then just sit around
1324 * waiting for the other 2 processes to do their thing, we don't want
1325 * to exit on a timeout. If the data stops flowing, the receiver will
1326 * notice that and let us know via the redo pipe (or its closing). */
1329 for (i = 0; i < flist->count; i++) {
1330 struct file_struct *file = flist->files[i];
1332 if (!file->basename)
1336 strlcpy(fbuf, local_name, sizeof fbuf);
1339 recv_generator(fbuf, file, i, itemizing, maybe_PERMS_REPORT,
1342 /* We need to ensure that any dirs we create have writeable
1343 * permissions during the time we are putting files within
1344 * them. This is then fixed after the transfer is done. */
1346 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)
1348 int mode = file->mode | S_IWUSR; /* user write */
1349 char *fname = local_name ? local_name : fbuf;
1350 if (do_chmod(fname, mode) < 0) {
1351 rsyserr(FERROR, errno,
1352 "failed to modify permissions on %s",
1355 need_retouch_dir_perms = 1;
1359 if (preserve_hard_links)
1360 check_for_finished_hlinks(itemizing, code);
1362 if (allowed_lull && !(i % lull_mod))
1363 maybe_send_keepalive();
1364 else if (!(i % 200))
1365 maybe_flush_socket();
1367 recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1369 delete_in_dir(NULL, NULL, NULL, NULL);
1372 csum_length = SUM_LENGTH;
1373 max_size = min_size = ignore_existing = ignore_non_existing = 0;
1374 update_only = always_checksum = size_only = 0;
1376 if (append_mode) /* resend w/o append mode */
1377 append_mode = -1; /* ... but only longer files */
1378 make_backups = 0; /* avoid a duplicate backup for inplace processing */
1381 rprintf(FINFO,"generate_files phase=%d\n",phase);
1383 write_int(f_out, -1);
1385 /* files can cycle through the system more than once
1386 * to catch initial checksum errors */
1387 while ((i = get_redo_num(itemizing, code)) != -1) {
1388 struct file_struct *file = flist->files[i];
1390 strlcpy(fbuf, local_name, sizeof fbuf);
1393 recv_generator(fbuf, file, i, itemizing, maybe_PERMS_REPORT,
1398 ignore_non_existing = save_ignore_non_existing;
1399 ignore_existing = save_ignore_existing;
1400 make_backups = save_make_backups;
1403 rprintf(FINFO,"generate_files phase=%d\n",phase);
1405 write_int(f_out, -1);
1406 /* Reduce round-trip lag-time for a useless delay-updates phase. */
1407 if (protocol_version >= 29 && !delay_updates)
1408 write_int(f_out, -1);
1410 /* Read MSG_DONE for the redo phase (and any prior messages). */
1411 get_redo_num(itemizing, code);
1413 if (protocol_version >= 29) {
1416 rprintf(FINFO, "generate_files phase=%d\n", phase);
1418 write_int(f_out, -1);
1419 /* Read MSG_DONE for delay-updates phase & prior messages. */
1420 get_redo_num(itemizing, code);
1423 do_progress = save_do_progress;
1424 if (delete_after && !local_name && flist->count > 0)
1425 do_delete_pass(flist);
1427 if ((need_retouch_dir_perms || need_retouch_dir_times)
1428 && !list_only && !local_name && !dry_run) {
1430 /* Now we need to fix any directory permissions that were
1431 * modified during the transfer and/or re-set any tweaked
1432 * modified-time values. */
1433 for (i = 0; i < flist->count; i++) {
1434 struct file_struct *file = flist->files[i];
1436 if (!file->basename || !S_ISDIR(file->mode))
1438 if (!need_retouch_dir_times && file->mode & S_IWUSR)
1440 recv_generator(f_name(file, NULL), file, i, itemizing,
1441 maybe_PERMS_REPORT, code, -1);
1442 if (allowed_lull && !(++j % lull_mod))
1443 maybe_send_keepalive();
1444 else if (!(j % 200))
1445 maybe_flush_socket();
1448 recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1450 if (max_delete > 0 && deletion_count > max_delete) {
1452 "Deletions stopped due to --max-delete limit (%d skipped)\n",
1453 deletion_count - max_delete);
1454 io_error |= IOERR_DEL_LIMIT;
1458 rprintf(FINFO,"generate_files finished\n");