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 daemon_log_format_has_i;
34 extern int do_progress;
36 extern int relative_paths;
37 extern int implied_dirs;
38 extern int keep_dirlinks;
39 extern int preserve_links;
40 extern int preserve_devices;
41 extern int preserve_specials;
42 extern int preserve_hard_links;
43 extern int preserve_perms;
44 extern int preserve_uid;
45 extern int preserve_gid;
46 extern int preserve_times;
47 extern int omit_dir_times;
48 extern int delete_mode;
49 extern int delete_before;
50 extern int delete_during;
51 extern int delete_after;
53 extern int ignore_errors;
54 extern int remove_sent_files;
55 extern int delay_updates;
56 extern int update_only;
57 extern int ignore_existing;
58 extern int ignore_non_existing;
60 extern int append_mode;
61 extern int make_backups;
62 extern int csum_length;
63 extern int ignore_times;
65 extern OFF_T max_size;
66 extern OFF_T min_size;
68 extern int allowed_lull;
69 extern int sock_f_out;
70 extern int ignore_timeout;
71 extern int protocol_version;
72 extern int fuzzy_basis;
73 extern int always_checksum;
74 extern int checksum_len;
75 extern char *partial_dir;
76 extern char *basis_dir[];
77 extern int compare_dest;
80 extern int whole_file;
82 extern int read_batch;
83 extern int safe_symlinks;
84 extern long block_size; /* "long" because popt can't set an int32. */
85 extern int max_delete;
86 extern int force_delete;
87 extern int one_file_system;
88 extern struct stats stats;
89 extern dev_t filesystem_dev;
90 extern char *backup_dir;
91 extern char *backup_suffix;
92 extern int backup_suffix_len;
93 extern struct file_list *the_file_list;
94 extern struct filter_list_struct server_filter_list;
96 static int deletion_count = 0; /* used to implement --max-delete */
97 static int can_link_symlinks = 1; /* start out optimistic */
98 static int can_link_devices = 1;
100 /* For calling delete_file() */
101 #define DEL_FORCE_RECURSE (1<<1) /* recurse even w/o --force */
102 #define DEL_TERSE (1<<3)
105 static int is_backup_file(char *fn)
107 int k = strlen(fn) - backup_suffix_len;
108 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
112 /* Delete a file or directory. If DEL_FORCE_RECURSE is set in the flags, or if
113 * force_delete is set, this will delete recursively.
115 * Note that fname must point to a MAXPATHLEN buffer if the mode indicates it's
116 * a directory! (The buffer is used for recursion, but returned unchanged.)
118 static int delete_item(char *fname, int mode, int flags)
120 struct file_list *dirlist;
121 int j, dlen, zap_dir, ok;
126 if (!S_ISDIR(mode)) {
127 if (max_delete && ++deletion_count > max_delete)
129 if (make_backups && (backup_dir || !is_backup_file(fname)))
130 ok = make_backup(fname);
132 ok = robust_unlink(fname) == 0;
134 if (!(flags & DEL_TERSE))
135 log_delete(fname, mode);
138 if (errno == ENOENT) {
142 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
147 zap_dir = flags & DEL_FORCE_RECURSE || force_delete;
148 if ((max_delete && ++deletion_count > max_delete)
149 || (dry_run && zap_dir)) {
152 } else if (make_backups && !backup_dir && !is_backup_file(fname)
153 && !(flags & DEL_FORCE_RECURSE))
154 ok = make_backup(fname);
156 ok = do_rmdir(fname) == 0;
158 if (!(flags & DEL_TERSE))
159 log_delete(fname, mode);
162 if (errno == ENOENT) {
167 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
171 flags |= DEL_FORCE_RECURSE; /* mark subdir dels as not "in the way" */
174 dlen = strlen(fname);
175 save_filters = push_local_filters(fname, dlen);
177 dirlist = get_dirlist(fname, dlen, 0);
180 if (dlen != 1 || *fname != '/')
182 remainder = MAXPATHLEN - (p - fname);
184 for (j = dirlist->count; j--; ) {
185 struct file_struct *fp = dirlist->files[j];
187 if (fp->flags & FLAG_MOUNT_POINT)
190 strlcpy(p, fp->basename, remainder);
191 delete_item(fname, fp->mode, flags & ~DEL_TERSE);
197 pop_local_filters(save_filters);
199 if (max_delete && ++deletion_count > max_delete)
202 if (do_rmdir(fname) == 0) {
203 if (!(flags & DEL_TERSE))
204 log_delete(fname, mode);
205 } else if (errno != ENOTEMPTY && errno != EEXIST && errno != ENOENT) {
206 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
215 /* This function is used to implement per-directory deletion, and is used by
216 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
217 * MAXPATHLEN buffer with the name of the directory in it (the functions we
218 * call will append names onto the end, but the old dir value will be restored
220 static void delete_in_dir(struct file_list *flist, char *fbuf,
221 struct file_struct *file, STRUCT_STAT *stp)
223 static int min_depth = MAXPATHLEN, cur_depth = -1;
224 static void *filt_array[MAXPATHLEN/2+1];
225 static int already_warned = 0;
226 struct file_list *dirlist;
227 char delbuf[MAXPATHLEN];
231 while (cur_depth >= min_depth)
232 pop_local_filters(filt_array[cur_depth--]);
233 min_depth = MAXPATHLEN;
239 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
242 maybe_send_keepalive();
244 if (file->dir.depth >= MAXPATHLEN/2+1)
245 return; /* Impossible... */
247 if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
251 "IO error encountered -- skipping file deletion\n");
256 while (cur_depth >= file->dir.depth && cur_depth >= min_depth)
257 pop_local_filters(filt_array[cur_depth--]);
258 cur_depth = file->dir.depth;
259 if (min_depth > cur_depth)
260 min_depth = cur_depth;
262 filt_array[cur_depth] = push_local_filters(fbuf, dlen);
264 if (one_file_system) {
265 if (file->flags & FLAG_TOP_DIR)
266 filesystem_dev = stp->st_dev;
267 else if (filesystem_dev != stp->st_dev)
271 dirlist = get_dirlist(fbuf, dlen, 0);
273 /* If an item in dirlist is not found in flist, delete it
274 * from the filesystem. */
275 for (i = dirlist->count; i--; ) {
276 struct file_struct *fp = dirlist->files[i];
277 if (!fp->basename || fp->flags & FLAG_MOUNT_POINT)
279 if (flist_find(flist, fp) < 0) {
281 delete_item(delbuf, fp->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->uid)
331 if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->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_time(file->modtime, st->st_mtime) != 0))
350 iflags |= ITEM_REPORT_TIME;
351 if ((file->mode & CHMOD_BITS) != (st->st_mode & CHMOD_BITS))
352 iflags |= ITEM_REPORT_PERMS;
353 if (preserve_uid && am_root && file->uid != st->st_uid)
354 iflags |= ITEM_REPORT_OWNER;
355 if (preserve_gid && file->gid != GID_NONE
356 && st->st_gid != file->gid)
357 iflags |= ITEM_REPORT_GROUP;
359 iflags |= ITEM_IS_NEW;
362 if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
363 || log_format_has_i > 1 || (xname && *xname)) && !read_batch) {
364 if (protocol_version >= 29) {
366 write_int(sock_f_out, ndx);
367 write_shortint(sock_f_out, iflags);
368 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
369 write_byte(sock_f_out, fnamecmp_type);
370 if (iflags & ITEM_XNAME_FOLLOWS)
371 write_vstring(sock_f_out, xname, strlen(xname));
373 log_item(file, &stats, iflags, xname);
378 /* Perform our quick-check heuristic for determining if a file is unchanged. */
379 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
381 if (st->st_size != file->length)
384 /* if always checksum is set then we use the checksum instead
385 of the file time to determine whether to sync */
386 if (always_checksum && S_ISREG(st->st_mode)) {
387 char sum[MD4_SUM_LENGTH];
388 file_checksum(fn, sum, st->st_size);
389 return memcmp(sum, file->u.sum, checksum_len) == 0;
398 return cmp_time(st->st_mtime, file->modtime) == 0;
403 * set (initialize) the size entries in the per-file sum_struct
404 * calculating dynamic block and checksum sizes.
406 * This is only called from generate_and_send_sums() but is a separate
407 * function to encapsulate the logic.
409 * The block size is a rounded square root of file length.
411 * The checksum size is determined according to:
412 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
413 * provided by Donovan Baarda which gives a probability of rsync
414 * algorithm corrupting data and falling back using the whole md4
417 * This might be made one of several selectable heuristics.
419 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
425 blength = block_size;
426 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
427 blength = BLOCK_SIZE;
432 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
433 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
434 blength = MAX_BLOCK_SIZE;
439 if (len < (int64)blength * blength)
442 } while (c >= 8); /* round to multiple of 8 */
443 blength = MAX(blength, BLOCK_SIZE);
447 if (protocol_version < 27) {
448 s2length = csum_length;
449 } else if (csum_length == SUM_LENGTH) {
450 s2length = SUM_LENGTH;
454 int b = BLOCKSUM_BIAS;
455 for (l = len; l >>= 1; b += 2) {}
456 for (c = blength; c >>= 1 && b; b--) {}
457 /* add a bit, subtract rollsum, round up. */
458 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
459 s2length = MAX(s2length, csum_length);
460 s2length = MIN(s2length, SUM_LENGTH);
464 sum->blength = blength;
465 sum->s2length = s2length;
466 sum->remainder = len % blength;
467 sum->count = len / blength + (sum->remainder != 0);
469 if (sum->count && verbose > 2) {
471 "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
472 (double)sum->count, (long)sum->remainder, (long)sum->blength,
473 sum->s2length, (double)sum->flength);
479 * Generate and send a stream of signatures/checksums that describe a buffer
481 * Generate approximately one checksum every block_len bytes.
483 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
486 struct map_struct *mapbuf;
487 struct sum_struct sum;
490 sum_sizes_sqroot(&sum, len);
491 write_sum_head(f_out, &sum);
493 if (append_mode > 0 && f_copy < 0)
497 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
501 for (i = 0; i < sum.count; i++) {
502 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
503 char *map = map_ptr(mapbuf, offset, n1);
504 char sum2[SUM_LENGTH];
511 full_write(f_copy, map, n1);
516 sum1 = get_checksum1(map, n1);
517 get_checksum2(map, n1, sum2);
521 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
522 (double)i, (double)offset - n1, (long)n1,
523 (unsigned long)sum1);
525 write_int(f_out, sum1);
526 write_buf(f_out, sum2, sum.s2length);
534 /* Try to find a filename in the same dir as "fname" with a similar name. */
535 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
537 int fname_len, fname_suf_len;
538 const char *fname_suf, *fname = file->basename;
539 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
540 int j, lowest_j = -1;
542 fname_len = strlen(fname);
543 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
545 for (j = 0; j < dirlist->count; j++) {
546 struct file_struct *fp = dirlist->files[j];
547 const char *suf, *name;
551 if (!S_ISREG(fp->mode) || !fp->length
552 || fp->flags & FLAG_NO_FUZZY)
557 if (fp->length == file->length
558 && cmp_time(fp->modtime, file->modtime) == 0) {
561 "fuzzy size/modtime match for %s\n",
568 suf = find_filename_suffix(name, len, &suf_len);
570 dist = fuzzy_distance(name, len, fname, fname_len);
571 /* Add some extra weight to how well the suffixes match. */
572 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
575 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
576 name, (int)(dist>>16), (int)(dist&0xFFFF));
578 if (dist <= lowest_dist) {
587 void check_for_finished_hlinks(int itemizing, enum logcode code)
589 struct file_struct *file;
592 while ((ndx = get_hlink_num()) != -1) {
593 if (ndx < 0 || ndx >= the_file_list->count)
596 file = the_file_list->files[ndx];
597 if (!file->link_u.links)
600 hard_link_cluster(file, ndx, itemizing, code);
604 /* This is only called for regular files. We return -2 if we've finished
605 * handling the file, -1 if no dest-linking occurred, or a non-negative
606 * value if we found an alternate basis file. */
607 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
608 char *cmpbuf, STRUCT_STAT *stp, int itemizing,
609 int maybe_ATTRS_REPORT, enum logcode code)
616 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
617 if (link_stat(cmpbuf, stp, 0) < 0 || !S_ISREG(stp->st_mode))
619 switch (match_level) {
625 if (!unchanged_file(cmpbuf, file, stp))
631 if (!unchanged_attrs(file, stp))
633 if ((always_checksum || ignore_times)
634 && cmp_time(stp->st_mtime, file->modtime))
641 } while (basis_dir[++j] != NULL);
646 if (j != best_match) {
648 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
649 if (link_stat(cmpbuf, stp, 0) < 0)
654 if (match_level == 3 && !copy_dest) {
656 if (hard_link_one(file, ndx, fname, 0, stp,
658 itemizing && verbose > 1,
661 if (preserve_hard_links && file->link_u.links)
662 hard_link_cluster(file, ndx, itemizing, code);
663 } else if (itemizing)
664 itemize(file, ndx, 0, stp, 0, 0, NULL);
665 if (verbose > 1 && maybe_ATTRS_REPORT) {
666 code = daemon_log_format_has_i || dry_run
668 rprintf(code, "%s is uptodate\n", fname);
674 if (match_level >= 2) {
675 try_a_copy: /* Copy the file locally. */
676 if (copy_file(cmpbuf, fname, file->mode) < 0) {
678 rsyserr(FINFO, errno, "copy_file %s => %s",
679 full_fname(cmpbuf), fname);
684 itemize(file, ndx, 0, stp, ITEM_LOCAL_CHANGE, 0, NULL);
685 set_file_attrs(fname, file, NULL, 0);
686 if (maybe_ATTRS_REPORT
687 && ((!itemizing && verbose && match_level == 2)
688 || (verbose > 1 && match_level == 3))) {
689 code = daemon_log_format_has_i || dry_run
691 rprintf(code, "%s%s\n", fname,
692 match_level == 3 ? " is uptodate" : "");
694 if (preserve_hard_links && file->link_u.links)
695 hard_link_cluster(file, ndx, itemizing, code);
699 return FNAMECMP_BASIS_DIR_LOW + j;
702 /* This is only called for non-regular files. We return -2 if we've finished
703 * handling the file, or -1 if no dest-linking occurred. */
704 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
705 int itemizing, int *possible_ptr,
706 int maybe_ATTRS_REPORT, enum logcode code)
708 char fnamebuf[MAXPATHLEN], lnk[MAXPATHLEN];
713 pathjoin(fnamebuf, MAXPATHLEN, basis_dir[i], fname);
714 if (link_stat(fnamebuf, &st, 0) < 0 || S_ISDIR(st.st_mode)
715 || !unchanged_attrs(file, &st))
717 if (S_ISLNK(file->mode)) {
719 if ((len = readlink(fnamebuf, lnk, MAXPATHLEN-1)) <= 0)
722 if (strcmp(lnk, file->u.link) != 0)
726 if (!IS_DEVICE(st.st_mode) || st.st_rdev != file->u.rdev)
730 if (do_link(fnamebuf, fname) < 0) {
731 /* TODO improve this to be based on errno? */
735 if (preserve_hard_links && file->link_u.links)
736 hard_link_cluster(file, ndx, itemizing, code);
738 if (itemizing && log_format_has_i && verbose > 1) {
739 int changes = compare_dest ? 0 : ITEM_LOCAL_CHANGE
740 + (link_dest ? ITEM_XNAME_FOLLOWS : 0);
741 char *lp = link_dest ? "" : NULL;
742 itemize(file, ndx, 0, &st, changes, 0, lp);
744 if (verbose > 1 && maybe_ATTRS_REPORT) {
745 code = daemon_log_format_has_i || dry_run
747 rprintf(code, "%s is uptodate\n", fname);
750 } while (basis_dir[++i] != NULL);
755 static int phase = 0;
757 /* Acts on the_file_list->file's ndx'th item, whose name is fname. If a dir,
758 * make sure it exists, and has the right permissions/timestamp info. For
759 * all other non-regular files (symlinks, etc.) we create them here. For
760 * regular files that have changed, we try to find a basis file and then
761 * start sending checksums.
763 * When fname is non-null, it must point to a MAXPATHLEN buffer!
765 * Note that f_out is set to -1 when doing final directory-permission and
766 * modification-time repair. */
767 static void recv_generator(char *fname, struct file_struct *file, int ndx,
768 int itemizing, int maybe_ATTRS_REPORT,
769 enum logcode code, int f_out)
771 static int missing_below = -1, excluded_below = -1;
772 static char *parent_dirname = "";
773 static struct file_list *fuzzy_dirlist = NULL;
774 static int need_fuzzy_dirlist = 0;
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];
783 int del_opts = DEL_TERSE | (delete_mode ? DEL_FORCE_RECURSE : 0);
790 flist_free(fuzzy_dirlist);
791 fuzzy_dirlist = NULL;
793 if (missing_below >= 0) {
802 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
804 if (server_filter_list.head) {
805 if (excluded_below >= 0) {
806 if (file->dir.depth > excluded_below)
810 if (check_filter(&server_filter_list, fname,
811 S_ISDIR(file->mode)) < 0) {
812 if (S_ISDIR(file->mode))
813 excluded_below = file->dir.depth;
817 "skipping server-excluded file \"%s\"\n",
824 if (missing_below >= 0 && file->dir.depth <= missing_below) {
832 char *dn = file->dirname ? file->dirname : ".";
833 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
834 if (relative_paths && !implied_dirs
835 && do_stat(dn, &st) < 0
836 && create_directory_path(fname) < 0) {
837 rsyserr(FERROR, errno,
838 "recv_generator: mkdir %s failed",
842 flist_free(fuzzy_dirlist);
843 fuzzy_dirlist = NULL;
846 need_fuzzy_dirlist = 1;
850 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
851 fuzzy_dirlist = get_dirlist(dn, -1, 1);
852 need_fuzzy_dirlist = 0;
855 statret = link_stat(fname, &st,
856 keep_dirlinks && S_ISDIR(file->mode));
860 if (ignore_non_existing && statret == -1 && stat_errno == ENOENT) {
862 rprintf(FINFO, "not creating new %s \"%s\"\n",
863 S_ISDIR(file->mode) ? "directory" : "file",
869 /* If we're not preserving permissions, change the file-list's
870 * mode based on the local permissions and some heuristics. */
871 if (!preserve_perms) {
872 int exists = statret == 0
873 && S_ISDIR(st.st_mode) == S_ISDIR(file->mode);
874 file->mode = dest_mode(file->mode, st.st_mode, exists);
877 if (S_ISDIR(file->mode)) {
878 /* The file to be received is a directory, so we need
879 * to prepare appropriately. If there is already a
880 * file of that name and it is *not* a directory, then
881 * we need to delete it. If it doesn't exist, then
882 * (perhaps recursively) create it. */
883 if (statret == 0 && !S_ISDIR(st.st_mode)) {
884 if (delete_item(fname, st.st_mode, del_opts) < 0)
888 if (dry_run && statret != 0 && missing_below < 0) {
889 missing_below = file->dir.depth;
892 if (itemizing && f_out != -1) {
893 itemize(file, ndx, statret, &st,
894 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
896 if (statret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
897 if (!relative_paths || errno != ENOENT
898 || create_directory_path(fname) < 0
899 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
900 rsyserr(FERROR, errno,
901 "recv_generator: mkdir %s failed",
905 if (set_file_attrs(fname, file, statret ? NULL : &st, 0)
906 && verbose && code && f_out != -1)
907 rprintf(code, "%s/\n", fname);
908 if (delete_during && f_out != -1 && !phase && dry_run < 2
909 && (file->flags & FLAG_DEL_HERE))
910 delete_in_dir(the_file_list, fname, file, &st);
914 if (preserve_hard_links && file->link_u.links
915 && hard_link_check(file, ndx, fname, statret, &st,
916 itemizing, code, HL_CHECK_MASTER))
919 if (preserve_links && S_ISLNK(file->mode)) {
921 if (safe_symlinks && unsafe_symlink(file->u.link, fname)) {
923 if (the_file_list->count == 1)
924 fname = f_name(file, NULL);
926 "ignoring unsafe symlink %s -> \"%s\"\n",
927 full_fname(fname), file->u.link);
932 char lnk[MAXPATHLEN];
935 if (!S_ISDIR(st.st_mode)
936 && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) {
938 /* A link already pointing to the
939 * right place -- no further action
941 if (strcmp(lnk, file->u.link) == 0) {
943 itemize(file, ndx, 0, &st, 0,
946 set_file_attrs(fname, file, &st,
948 if (preserve_hard_links
949 && file->link_u.links) {
950 hard_link_cluster(file, ndx,
957 /* Not the right symlink (or not a symlink), so
959 if (delete_item(fname, st.st_mode, del_opts) < 0)
961 if (!S_ISLNK(st.st_mode))
963 } else if (basis_dir[0] != NULL && can_link_symlinks) {
964 if (try_dests_non(file, fname, ndx, itemizing,
966 maybe_ATTRS_REPORT, code) == -2) {
969 itemizing = code = 0;
972 if (preserve_hard_links && file->link_u.links
973 && hard_link_check(file, ndx, fname, -1, &st,
974 itemizing, code, HL_SKIP))
976 if (do_symlink(file->u.link,fname) != 0) {
977 rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
978 full_fname(fname), file->u.link);
980 set_file_attrs(fname, file, NULL, 0);
982 itemize(file, ndx, statret, &st,
983 ITEM_LOCAL_CHANGE, 0, NULL);
985 if (code && verbose) {
986 rprintf(code, "%s -> %s\n", fname,
989 if (remove_sent_files && !dry_run) {
991 SIVAL(numbuf, 0, ndx);
992 send_msg(MSG_SUCCESS, numbuf, 4);
994 if (preserve_hard_links && file->link_u.links)
995 hard_link_cluster(file, ndx, itemizing, code);
1001 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1002 || (preserve_specials && IS_SPECIAL(file->mode))) {
1004 && (basis_dir[0] != NULL && can_link_devices)) {
1005 if (try_dests_non(file, fname, ndx, itemizing,
1007 maybe_ATTRS_REPORT, code) == -2) {
1010 itemizing = code = 0;
1014 || (st.st_mode & ~CHMOD_BITS) != (file->mode & ~CHMOD_BITS)
1015 || st.st_rdev != file->u.rdev) {
1017 && delete_item(fname, st.st_mode, del_opts) < 0)
1019 if (preserve_hard_links && file->link_u.links
1020 && hard_link_check(file, ndx, fname, -1, &st,
1021 itemizing, code, HL_SKIP))
1023 if ((IS_DEVICE(file->mode) && !IS_DEVICE(st.st_mode))
1024 || (IS_SPECIAL(file->mode) && !IS_SPECIAL(st.st_mode)))
1027 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
1029 (int)file->mode, (int)file->u.rdev);
1031 if (do_mknod(fname,file->mode,file->u.rdev) < 0) {
1032 rsyserr(FERROR, errno, "mknod %s failed",
1035 set_file_attrs(fname, file, NULL, 0);
1037 itemize(file, ndx, statret, &st,
1038 ITEM_LOCAL_CHANGE, 0, NULL);
1040 if (code && verbose)
1041 rprintf(code, "%s\n", fname);
1042 if (preserve_hard_links && file->link_u.links) {
1043 hard_link_cluster(file, ndx,
1049 itemize(file, ndx, statret, &st, 0, 0, NULL);
1050 set_file_attrs(fname, file, &st, maybe_ATTRS_REPORT);
1051 if (preserve_hard_links && file->link_u.links)
1052 hard_link_cluster(file, ndx, itemizing, code);
1057 if (!S_ISREG(file->mode)) {
1058 if (the_file_list->count == 1)
1059 fname = f_name(file, NULL);
1060 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1064 if (max_size && file->length > max_size) {
1066 if (the_file_list->count == 1)
1067 fname = f_name(file, NULL);
1068 rprintf(FINFO, "%s is over max-size\n", fname);
1072 if (min_size && file->length < min_size) {
1074 if (the_file_list->count == 1)
1075 fname = f_name(file, NULL);
1076 rprintf(FINFO, "%s is under min-size\n", fname);
1081 if (ignore_existing && statret == 0) {
1083 rprintf(FINFO, "%s exists\n", fname);
1087 if (update_only && statret == 0
1088 && cmp_time(st.st_mtime, file->modtime) > 0) {
1090 rprintf(FINFO, "%s is newer\n", fname);
1095 fnamecmp_type = FNAMECMP_FNAME;
1097 if (statret == 0 && !S_ISREG(st.st_mode)) {
1098 if (delete_item(fname, st.st_mode, del_opts) != 0)
1101 stat_errno = ENOENT;
1104 if (statret != 0 && basis_dir[0] != NULL) {
1105 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &st,
1106 itemizing, maybe_ATTRS_REPORT, code);
1110 fnamecmp = fnamecmpbuf;
1119 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1120 && link_stat(partialptr, &partial_st, 0) == 0
1121 && S_ISREG(partial_st.st_mode)) {
1123 goto prepare_to_open;
1127 if (statret != 0 && fuzzy_dirlist && dry_run <= 1) {
1128 int j = find_fuzzy(file, fuzzy_dirlist);
1130 fuzzy_file = fuzzy_dirlist->files[j];
1131 f_name(fuzzy_file, fnamecmpbuf);
1133 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1134 fname, fnamecmpbuf);
1136 st.st_size = fuzzy_file->length;
1138 fnamecmp = fnamecmpbuf;
1139 fnamecmp_type = FNAMECMP_FUZZY;
1144 if (preserve_hard_links && file->link_u.links
1145 && hard_link_check(file, ndx, fname, statret, &st,
1146 itemizing, code, HL_SKIP))
1148 if (stat_errno == ENOENT)
1150 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1155 if (append_mode && st.st_size > file->length)
1158 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1160 else if (fnamecmp_type == FNAMECMP_FUZZY)
1162 else if (unchanged_file(fnamecmp, file, &st)) {
1164 do_unlink(partialptr);
1165 handle_partial_dir(partialptr, PDIR_DELETE);
1168 itemize(file, ndx, real_ret, &real_st,
1171 set_file_attrs(fname, file, &st, maybe_ATTRS_REPORT);
1172 if (preserve_hard_links && file->link_u.links)
1173 hard_link_cluster(file, ndx, itemizing, code);
1180 fnamecmp = partialptr;
1181 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1185 if (!do_xfers || read_batch || whole_file)
1188 if (fuzzy_dirlist) {
1189 int j = flist_find(fuzzy_dirlist, file);
1190 if (j >= 0) /* don't use changing file as future fuzzy basis */
1191 fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY;
1195 fd = do_open(fnamecmp, O_RDONLY, 0);
1198 rsyserr(FERROR, errno, "failed to open %s, continuing",
1199 full_fname(fnamecmp));
1201 /* pretend the file didn't exist */
1202 if (preserve_hard_links && file->link_u.links
1203 && hard_link_check(file, ndx, fname, statret, &st,
1204 itemizing, code, HL_SKIP))
1206 statret = real_ret = -1;
1210 if (inplace && make_backups && fnamecmp_type == FNAMECMP_FNAME) {
1211 if (!(backupptr = get_backup_name(fname))) {
1215 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1217 goto pretend_missing;
1219 if (robust_unlink(backupptr) && errno != ENOENT) {
1220 rsyserr(FERROR, errno, "unlink %s",
1221 full_fname(backupptr));
1226 if ((f_copy = do_open(backupptr,
1227 O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1228 rsyserr(FERROR, errno, "open %s",
1229 full_fname(backupptr));
1234 fnamecmp_type = FNAMECMP_BACKUP;
1238 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1239 fnamecmp, (double)st.st_size);
1243 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1246 if (remove_sent_files && !delay_updates && !phase)
1247 increment_active_files(ndx, itemizing, code);
1248 write_int(f_out, ndx);
1250 int iflags = ITEM_TRANSFER;
1251 if (always_checksum)
1252 iflags |= ITEM_REPORT_CHECKSUM;
1253 if (fnamecmp_type != FNAMECMP_FNAME)
1254 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1255 if (fnamecmp_type == FNAMECMP_FUZZY)
1256 iflags |= ITEM_XNAME_FOLLOWS;
1257 itemize(file, -1, real_ret, &real_st, iflags, fnamecmp_type,
1258 fuzzy_file ? fuzzy_file->basename : NULL);
1262 if (preserve_hard_links && file->link_u.links)
1263 hard_link_cluster(file, ndx, itemizing, code);
1269 if (statret != 0 || whole_file) {
1270 write_sum_head(f_out, NULL);
1274 generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1278 set_file_attrs(backupptr, back_file, NULL, 0);
1280 rprintf(FINFO, "backed up %s to %s\n",
1289 void generate_files(int f_out, struct file_list *flist, char *local_name)
1292 char fbuf[MAXPATHLEN];
1293 int itemizing, maybe_ATTRS_REPORT;
1295 int lull_mod = allowed_lull * 5;
1296 int need_retouch_dir_times = preserve_times && !omit_dir_times;
1297 int need_retouch_dir_perms = 0;
1298 int save_ignore_existing = ignore_existing;
1299 int save_ignore_non_existing = ignore_non_existing;
1300 int save_do_progress = do_progress;
1301 int save_make_backups = make_backups;
1303 if (protocol_version >= 29) {
1305 maybe_ATTRS_REPORT = log_format_has_i ? 0 : ATTRS_REPORT;
1306 code = daemon_log_format_has_i ? 0 : FLOG;
1307 } else if (am_daemon) {
1308 itemizing = daemon_log_format_has_i && do_xfers;
1309 maybe_ATTRS_REPORT = ATTRS_REPORT;
1310 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1311 } else if (!am_server) {
1312 itemizing = log_format_has_i;
1313 maybe_ATTRS_REPORT = log_format_has_i ? 0 : ATTRS_REPORT;
1314 code = itemizing ? 0 : FINFO;
1317 maybe_ATTRS_REPORT = ATTRS_REPORT;
1322 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
1323 (long)getpid(), flist->count);
1326 if (delete_before && !local_name && flist->count > 0)
1327 do_delete_pass(flist);
1330 if (append_mode || whole_file < 0)
1333 rprintf(FINFO, "delta-transmission %s\n",
1335 ? "disabled for local transfer or --whole-file"
1339 /* Since we often fill up the outgoing socket and then just sit around
1340 * waiting for the other 2 processes to do their thing, we don't want
1341 * to exit on a timeout. If the data stops flowing, the receiver will
1342 * notice that and let us know via the redo pipe (or its closing). */
1345 for (i = 0; i < flist->count; i++) {
1346 struct file_struct *file = flist->files[i];
1348 if (!file->basename)
1352 strlcpy(fbuf, local_name, sizeof fbuf);
1355 recv_generator(fbuf, file, i, itemizing, maybe_ATTRS_REPORT,
1358 /* We need to ensure that any dirs we create have writeable
1359 * permissions during the time we are putting files within
1360 * them. This is then fixed after the transfer is done. */
1362 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)
1364 mode_t mode = file->mode | S_IWUSR; /* user write */
1365 char *fname = local_name ? local_name : fbuf;
1366 if (do_chmod(fname, mode) < 0) {
1367 rsyserr(FERROR, errno,
1368 "failed to modify permissions on %s",
1371 need_retouch_dir_perms = 1;
1375 if (preserve_hard_links)
1376 check_for_finished_hlinks(itemizing, code);
1378 if (allowed_lull && !(i % lull_mod))
1379 maybe_send_keepalive();
1380 else if (!(i % 200))
1381 maybe_flush_socket();
1383 recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1385 delete_in_dir(NULL, NULL, NULL, NULL);
1388 csum_length = SUM_LENGTH;
1389 max_size = min_size = ignore_existing = ignore_non_existing = 0;
1390 update_only = always_checksum = size_only = 0;
1392 if (append_mode) /* resend w/o append mode */
1393 append_mode = -1; /* ... but only longer files */
1394 make_backups = 0; /* avoid a duplicate backup for inplace processing */
1397 rprintf(FINFO,"generate_files phase=%d\n",phase);
1399 write_int(f_out, -1);
1401 /* files can cycle through the system more than once
1402 * to catch initial checksum errors */
1403 while ((i = get_redo_num(itemizing, code)) != -1) {
1404 struct file_struct *file = flist->files[i];
1406 strlcpy(fbuf, local_name, sizeof fbuf);
1409 recv_generator(fbuf, file, i, itemizing, maybe_ATTRS_REPORT,
1414 ignore_non_existing = save_ignore_non_existing;
1415 ignore_existing = save_ignore_existing;
1416 make_backups = save_make_backups;
1419 rprintf(FINFO,"generate_files phase=%d\n",phase);
1421 write_int(f_out, -1);
1422 /* Reduce round-trip lag-time for a useless delay-updates phase. */
1423 if (protocol_version >= 29 && !delay_updates)
1424 write_int(f_out, -1);
1426 /* Read MSG_DONE for the redo phase (and any prior messages). */
1427 get_redo_num(itemizing, code);
1429 if (protocol_version >= 29) {
1432 rprintf(FINFO, "generate_files phase=%d\n", phase);
1434 write_int(f_out, -1);
1435 /* Read MSG_DONE for delay-updates phase & prior messages. */
1436 get_redo_num(itemizing, code);
1439 do_progress = save_do_progress;
1440 if (delete_after && !local_name && flist->count > 0)
1441 do_delete_pass(flist);
1443 if ((need_retouch_dir_perms || need_retouch_dir_times)
1444 && !list_only && !local_name && !dry_run) {
1446 /* Now we need to fix any directory permissions that were
1447 * modified during the transfer and/or re-set any tweaked
1448 * modified-time values. */
1449 for (i = 0; i < flist->count; i++) {
1450 struct file_struct *file = flist->files[i];
1452 if (!file->basename || !S_ISDIR(file->mode))
1454 if (!need_retouch_dir_times && file->mode & S_IWUSR)
1456 recv_generator(f_name(file, NULL), file, i, itemizing,
1457 maybe_ATTRS_REPORT, code, -1);
1458 if (allowed_lull && !(++j % lull_mod))
1459 maybe_send_keepalive();
1460 else if (!(j % 200))
1461 maybe_flush_socket();
1464 recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1466 if (max_delete > 0 && deletion_count > max_delete) {
1468 "Deletions stopped due to --max-delete limit (%d skipped)\n",
1469 deletion_count - max_delete);
1470 io_error |= IOERR_DEL_LIMIT;
1474 rprintf(FINFO,"generate_files finished\n");