2 * Routines that are exclusive to the generator process.
4 * Copyright (C) 1996-2000 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2003-2009 Wayne Davison
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
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 along
20 * with this program; if not, visit the http://fsf.org website.
29 extern int stdout_format_has_i;
30 extern int logfile_format_has_i;
34 extern int inc_recurse;
35 extern int relative_paths;
36 extern int implied_dirs;
37 extern int keep_dirlinks;
38 extern int preserve_acls;
39 extern int preserve_xattrs;
40 extern int preserve_links;
41 extern int preserve_devices;
42 extern int preserve_specials;
43 extern int preserve_hard_links;
44 extern int preserve_executability;
45 extern int preserve_perms;
46 extern int preserve_times;
49 extern int delete_mode;
50 extern int delete_before;
51 extern int delete_during;
52 extern int delete_after;
53 extern int missing_args;
54 extern int msgdone_cnt;
55 extern int ignore_errors;
56 extern int remove_source_files;
57 extern int delay_updates;
58 extern int update_only;
59 extern int human_readable;
60 extern int ignore_existing;
61 extern int ignore_non_existing;
63 extern int append_mode;
64 extern int make_backups;
65 extern int csum_length;
66 extern int ignore_times;
68 extern OFF_T max_size;
69 extern OFF_T min_size;
72 extern int allowed_lull;
73 extern int sock_f_out;
74 extern int protocol_version;
75 extern int file_total;
76 extern int fuzzy_basis;
77 extern int always_checksum;
78 extern int checksum_len;
79 extern char *partial_dir;
80 extern int compare_dest;
83 extern int whole_file;
85 extern int read_batch;
86 extern int safe_symlinks;
87 extern long block_size; /* "long" because popt can't set an int32. */
88 extern int unsort_ndx;
89 extern int max_delete;
90 extern int force_delete;
91 extern int one_file_system;
92 extern int skipped_deletes;
93 extern dev_t filesystem_dev;
94 extern mode_t orig_umask;
97 extern char *basis_dir[MAX_BASIS_DIRS+1];
98 extern struct file_list *cur_flist, *first_flist, *dir_flist;
99 extern filter_rule_list filter_list, daemon_filter_list;
101 int maybe_ATTRS_REPORT = 0;
103 static dev_t dev_zero;
104 static int deldelay_size = 0, deldelay_cnt = 0;
105 static char *deldelay_buf = NULL;
106 static int deldelay_fd = -1;
107 static int loopchk_limit;
108 static int dir_tweaking;
109 static int symlink_timeset_failed_flags;
110 static int need_retouch_dir_times;
111 static int need_retouch_dir_perms;
112 static const char *solo_file = NULL;
115 TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
118 /* Forward declarations. */
119 #ifdef SUPPORT_HARD_LINKS
120 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
121 enum logcode code, int f_out);
124 #define EARLY_DELAY_DONE_MSG() (!delay_updates)
125 #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
127 static int start_delete_delay_temp(void)
129 char fnametmp[MAXPATHLEN];
130 int save_dry_run = dry_run;
133 if (!get_tmpname(fnametmp, "deldelay", False)
134 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
135 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
136 inc_recurse ? "" : " -- switching to --delete-after");
138 delete_after = !inc_recurse;
139 dry_run = save_dry_run;
143 dry_run = save_dry_run;
147 static int flush_delete_delay(void)
149 if (deldelay_fd < 0 && !start_delete_delay_temp())
151 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
152 rsyserr(FERROR, errno, "flush of delete-delay buffer");
154 delete_after = !inc_recurse;
162 static int remember_delete(struct file_struct *file, const char *fname, int flags)
166 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
169 if (flags & DEL_NO_UID_WRITE)
170 deldelay_buf[deldelay_cnt++] = '!';
173 len = snprintf(deldelay_buf + deldelay_cnt,
174 deldelay_size - deldelay_cnt,
176 (int)file->mode, fname, '\0');
177 if ((deldelay_cnt += len) <= deldelay_size)
180 if (!flush_delete_delay())
187 static int read_delay_line(char *buf, int *flags_p)
189 static int read_pos = 0;
191 char *bp, *past_space;
194 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
195 if (j < deldelay_cnt)
197 if (deldelay_fd < 0) {
202 deldelay_cnt -= read_pos;
203 if (deldelay_cnt == deldelay_size)
205 if (deldelay_cnt && read_pos) {
206 memmove(deldelay_buf, deldelay_buf + read_pos,
209 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
210 deldelay_size - deldelay_cnt);
214 "ERROR: unexpected EOF in delete-delay file.\n");
219 rsyserr(FERROR, errno,
220 "reading delete-delay file");
227 bp = deldelay_buf + read_pos;
230 *flags_p = DEL_NO_UID_WRITE;
234 if (sscanf(bp, "%x ", &mode) != 1) {
236 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
239 past_space = strchr(bp, ' ') + 1;
240 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
243 if (len > MAXPATHLEN) {
244 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
248 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
249 * instead of returning a pointer to our buffer. */
250 memcpy(buf, past_space, len);
255 static void do_delayed_deletions(char *delbuf)
259 if (deldelay_fd >= 0) {
260 if (deldelay_cnt && !flush_delete_delay())
262 lseek(deldelay_fd, 0, 0);
264 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
265 delete_item(delbuf, mode, flags | DEL_RECURSE);
266 if (deldelay_fd >= 0)
270 /* This function is used to implement per-directory deletion, and is used by
271 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
272 * MAXPATHLEN buffer with the name of the directory in it (the functions we
273 * call will append names onto the end, but the old dir value will be restored
275 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
277 static int already_warned = 0;
278 struct file_list *dirlist;
279 char delbuf[MAXPATHLEN];
281 int save_uid_ndx = uid_ndx;
284 change_local_filter_dir(NULL, 0, 0);
288 if (DEBUG_GTE(DEL, 2))
289 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
292 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
294 if (io_error && !ignore_errors) {
298 "IO error encountered -- skipping file deletion\n");
304 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
306 if (one_file_system) {
307 if (file->flags & FLAG_TOP_DIR)
308 filesystem_dev = *fs_dev;
309 else if (filesystem_dev != *fs_dev)
314 uid_ndx = ++file_extra_cnt;
316 dirlist = get_dirlist(fbuf, dlen, 0);
318 /* If an item in dirlist is not found in flist, delete it
319 * from the filesystem. */
320 for (i = dirlist->used; i--; ) {
321 struct file_struct *fp = dirlist->files[i];
322 if (!F_IS_ACTIVE(fp))
324 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
325 if (INFO_GTE(MOUNT, 1))
326 rprintf(FINFO, "cannot delete mount point: %s\n",
330 /* Here we want to match regardless of file type. Replacement
331 * of a file with one of another type is handled separately by
332 * a delete_item call with a DEL_MAKE_ROOM flag. */
333 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
334 int flags = DEL_RECURSE;
335 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
336 flags |= DEL_NO_UID_WRITE;
338 if (delete_during == 2) {
339 if (!remember_delete(fp, delbuf, flags))
342 delete_item(delbuf, fp->mode, flags);
354 /* This deletes any files on the receiving side that are not present on the
355 * sending side. This is used by --delete-before and --delete-after. */
356 static void do_delete_pass(void)
358 char fbuf[MAXPATHLEN];
362 /* dry_run is incremented when the destination doesn't exist yet. */
363 if (dry_run > 1 || list_only)
366 for (j = 0; j < cur_flist->used; j++) {
367 struct file_struct *file = cur_flist->sorted[j];
371 if (!(file->flags & FLAG_CONTENT_DIR)) {
372 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
376 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
377 rprintf(FINFO, "deleting in %s\n", fbuf);
379 if (link_stat(fbuf, &st, keep_dirlinks) < 0
380 || !S_ISDIR(st.st_mode))
383 delete_in_dir(fbuf, file, &st.st_dev);
385 delete_in_dir(NULL, NULL, &dev_zero);
387 if (INFO_GTE(FLIST, 2) && !am_server)
388 rprintf(FINFO, " \r");
391 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
393 #ifndef CAN_SET_SYMLINK_TIMES
394 if (S_ISLNK(file->mode)) {
398 if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
401 if (preserve_perms) {
402 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
404 } else if (preserve_executability
405 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
408 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
411 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
415 if (preserve_acls && !S_ISLNK(file->mode)) {
416 if (!ACL_READY(*sxp))
418 if (set_acl(NULL, file, sxp, file->mode))
422 #ifdef SUPPORT_XATTRS
423 if (preserve_xattrs) {
424 if (!XATTR_READY(*sxp))
425 get_xattr(fname, sxp);
426 if (xattr_diff(file, sxp, 0))
434 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
435 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
438 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
439 int keep_time = !preserve_times ? 0
440 : S_ISDIR(file->mode) ? preserve_times > 1 :
441 #ifdef CAN_SET_SYMLINK_TIMES
444 !S_ISLNK(file->mode);
447 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
448 iflags |= ITEM_REPORT_SIZE;
449 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
450 if (iflags & ITEM_LOCAL_CHANGE)
451 iflags |= symlink_timeset_failed_flags;
453 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
454 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
455 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
456 iflags |= ITEM_REPORT_TIME;
457 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
458 if (S_ISLNK(file->mode)) {
462 if (preserve_perms) {
463 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
464 iflags |= ITEM_REPORT_PERMS;
465 } else if (preserve_executability
466 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
467 iflags |= ITEM_REPORT_PERMS;
468 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
469 iflags |= ITEM_REPORT_OWNER;
470 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
471 && sxp->st.st_gid != (gid_t)F_GROUP(file))
472 iflags |= ITEM_REPORT_GROUP;
474 if (preserve_acls && !S_ISLNK(file->mode)) {
475 if (!ACL_READY(*sxp))
476 get_acl(fnamecmp, sxp);
477 if (set_acl(NULL, file, sxp, file->mode))
478 iflags |= ITEM_REPORT_ACL;
481 #ifdef SUPPORT_XATTRS
482 if (preserve_xattrs) {
483 if (!XATTR_READY(*sxp))
484 get_xattr(fnamecmp, sxp);
485 if (xattr_diff(file, sxp, 1))
486 iflags |= ITEM_REPORT_XATTR;
490 #ifdef SUPPORT_XATTRS
491 if (preserve_xattrs && xattr_diff(file, NULL, 1))
492 iflags |= ITEM_REPORT_XATTR;
494 iflags |= ITEM_IS_NEW;
498 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
499 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
500 if (protocol_version >= 29) {
502 write_ndx(sock_f_out, ndx);
503 write_shortint(sock_f_out, iflags);
504 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
505 write_byte(sock_f_out, fnamecmp_type);
506 if (iflags & ITEM_XNAME_FOLLOWS)
507 write_vstring(sock_f_out, xname, strlen(xname));
508 #ifdef SUPPORT_XATTRS
509 if (preserve_xattrs && do_xfers
510 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
511 send_xattr_request(NULL, file,
512 iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
515 } else if (ndx >= 0) {
516 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
517 log_item(code, file, iflags, xname);
523 /* Perform our quick-check heuristic for determining if a file is unchanged. */
524 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
526 if (st->st_size != F_LENGTH(file))
529 /* if always checksum is set then we use the checksum instead
530 of the file time to determine whether to sync */
531 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
532 char sum[MAX_DIGEST_LEN];
533 file_checksum(fn, sum, st->st_size);
534 return memcmp(sum, F_SUM(file), checksum_len) == 0;
543 return cmp_time(st->st_mtime, file->modtime) == 0;
548 * set (initialize) the size entries in the per-file sum_struct
549 * calculating dynamic block and checksum sizes.
551 * This is only called from generate_and_send_sums() but is a separate
552 * function to encapsulate the logic.
554 * The block size is a rounded square root of file length.
556 * The checksum size is determined according to:
557 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
558 * provided by Donovan Baarda which gives a probability of rsync
559 * algorithm corrupting data and falling back using the whole md4
562 * This might be made one of several selectable heuristics.
564 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
571 blength = block_size;
572 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
573 blength = BLOCK_SIZE;
575 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
578 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
579 if (c < 0 || c >= max_blength)
580 blength = max_blength;
585 if (len < (int64)blength * blength)
588 } while (c >= 8); /* round to multiple of 8 */
589 blength = MAX(blength, BLOCK_SIZE);
593 if (protocol_version < 27) {
594 s2length = csum_length;
595 } else if (csum_length == SUM_LENGTH) {
596 s2length = SUM_LENGTH;
599 int b = BLOCKSUM_BIAS;
600 for (l = len; l >>= 1; b += 2) {}
601 for (c = blength; (c >>= 1) && b; b--) {}
602 /* add a bit, subtract rollsum, round up. */
603 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
604 s2length = MAX(s2length, csum_length);
605 s2length = MIN(s2length, SUM_LENGTH);
609 sum->blength = blength;
610 sum->s2length = s2length;
611 sum->remainder = (int32)(len % blength);
612 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
614 if ((int64)sum->count != l)
617 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
619 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
620 big_num(sum->count), (long)sum->remainder, (long)sum->blength,
621 sum->s2length, big_num(sum->flength));
627 * Generate and send a stream of signatures/checksums that describe a buffer
629 * Generate approximately one checksum every block_len bytes.
631 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
634 struct map_struct *mapbuf;
635 struct sum_struct sum;
638 sum_sizes_sqroot(&sum, len);
641 write_sum_head(f_out, &sum);
643 if (append_mode > 0 && f_copy < 0)
647 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
651 for (i = 0; i < sum.count; i++) {
652 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
653 char *map = map_ptr(mapbuf, offset, n1);
654 char sum2[SUM_LENGTH];
661 full_write(f_copy, map, n1);
666 sum1 = get_checksum1(map, n1);
667 get_checksum2(map, n1, sum2);
669 if (DEBUG_GTE(DELTASUM, 3)) {
671 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
672 big_num(i), big_num(offset - n1), (long)n1,
673 (unsigned long)sum1);
675 write_int(f_out, sum1);
676 write_buf(f_out, sum2, sum.s2length);
686 /* Try to find a filename in the same dir as "fname" with a similar name. */
687 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
689 int fname_len, fname_suf_len;
690 const char *fname_suf, *fname = file->basename;
691 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
692 int j, lowest_j = -1;
694 fname_len = strlen(fname);
695 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
697 for (j = 0; j < dirlist->used; j++) {
698 struct file_struct *fp = dirlist->files[j];
699 const char *suf, *name;
703 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
704 || fp->flags & FLAG_FILE_SENT)
709 if (F_LENGTH(fp) == F_LENGTH(file)
710 && cmp_time(fp->modtime, file->modtime) == 0) {
711 if (DEBUG_GTE(FUZZY, 2)) {
713 "fuzzy size/modtime match for %s\n",
720 suf = find_filename_suffix(name, len, &suf_len);
722 dist = fuzzy_distance(name, len, fname, fname_len);
723 /* Add some extra weight to how well the suffixes match. */
724 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
726 if (DEBUG_GTE(FUZZY, 2)) {
727 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
728 name, (int)(dist>>16), (int)(dist&0xFFFF));
730 if (dist <= lowest_dist) {
739 /* Copy a file found in our --copy-dest handling. */
740 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
742 char buf[MAXPATHLEN];
743 const char *copy_to, *partialptr;
744 int save_preserve_xattrs = preserve_xattrs;
748 /* Let copy_file open the destination in place. */
752 fd_w = open_tmpfile(buf, dest, file);
757 cleanup_set(copy_to, NULL, NULL, -1, -1);
758 if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
759 if (INFO_GTE(COPY, 1)) {
760 rsyserr(FINFO, errno, "copy_file %s => %s",
761 full_fname(src), copy_to);
763 /* Try to clean up. */
768 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
769 preserve_xattrs = 0; /* xattrs were copied with file */
770 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
771 preserve_xattrs = save_preserve_xattrs;
776 /* This is only called for regular files. We return -2 if we've finished
777 * handling the file, -1 if no dest-linking occurred, or a non-negative
778 * value if we found an alternate basis file. */
779 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
780 char *cmpbuf, stat_x *sxp, int itemizing,
788 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
789 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
791 switch (match_level) {
797 if (!unchanged_file(cmpbuf, file, &sxp->st))
803 if (!unchanged_attrs(cmpbuf, file, sxp))
810 } while (basis_dir[++j] != NULL);
815 if (j != best_match) {
817 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
818 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
822 if (match_level == 3 && !copy_dest) {
823 #ifdef SUPPORT_HARD_LINKS
825 if (!hard_link_one(file, fname, cmpbuf, 1))
827 if (preserve_hard_links && F_IS_HLINKED(file))
828 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
829 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
830 itemize(cmpbuf, file, ndx, 1, sxp,
831 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
837 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
838 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
839 rprintf(FCLIENT, "%s is uptodate\n", fname);
843 if (match_level >= 2) {
844 #ifdef SUPPORT_HARD_LINKS
845 try_a_copy: /* Copy the file locally. */
847 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
850 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
851 if (maybe_ATTRS_REPORT
852 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
853 || (INFO_GTE(NAME, 2) && match_level == 3))) {
854 code = match_level == 3 ? FCLIENT : FINFO;
855 rprintf(code, "%s%s\n", fname,
856 match_level == 3 ? " is uptodate" : "");
858 #ifdef SUPPORT_HARD_LINKS
859 if (preserve_hard_links && F_IS_HLINKED(file))
860 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
865 return FNAMECMP_BASIS_DIR_LOW + j;
868 /* This is only called for non-regular files. We return -2 if we've finished
869 * handling the file, or -1 if no dest-linking occurred, or a non-negative
870 * value if we found an alternate basis file. */
871 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
872 char *cmpbuf, stat_x *sxp, int itemizing,
877 enum nonregtype type;
880 char lnk[MAXPATHLEN];
885 #ifndef SUPPORT_LINKS
886 if (S_ISLNK(file->mode))
889 if (S_ISDIR(file->mode)) {
891 } else if (IS_SPECIAL(file->mode))
893 else if (IS_DEVICE(file->mode))
896 else if (S_ISLNK(file->mode))
901 "internal: try_dests_non() called with invalid mode (%o)\n",
903 exit_cleanup(RERR_UNSUPPORTED);
907 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
908 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
912 if (!S_ISDIR(sxp->st.st_mode))
916 if (!IS_SPECIAL(sxp->st.st_mode))
920 if (!IS_DEVICE(sxp->st.st_mode))
925 if (!S_ISLNK(sxp->st.st_mode))
932 if (match_level < 1) {
941 devp = F_RDEV_P(file);
942 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
947 if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
950 if (strcmp(lnk, F_SYMLINK(file)) != 0)
957 if (match_level < 2) {
961 if (unchanged_attrs(cmpbuf, file, sxp)) {
966 } while (basis_dir[++j] != NULL);
971 if (j != best_match) {
973 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
974 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
978 if (match_level == 3) {
979 #ifdef SUPPORT_HARD_LINKS
981 #ifndef CAN_HARDLINK_SYMLINK
982 && !S_ISLNK(file->mode)
984 #ifndef CAN_HARDLINK_SPECIAL
985 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
987 && !S_ISDIR(file->mode)) {
988 if (do_link(cmpbuf, fname) < 0) {
989 rsyserr(FERROR_XFER, errno,
990 "failed to hard-link %s with %s",
994 if (preserve_hard_links && F_IS_HLINKED(file))
995 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
999 if (itemizing && stdout_format_has_i
1000 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1001 int chg = compare_dest && type != TYPE_DIR ? 0
1002 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1003 char *lp = match_level == 3 ? "" : NULL;
1004 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1006 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1007 rprintf(FCLIENT, "%s%s is uptodate\n",
1008 fname, type == TYPE_DIR ? "/" : "");
1016 static void list_file_entry(struct file_struct *f)
1018 char permbuf[PERMSTRING_SIZE];
1020 int colwidth = human_readable ? 14 : 11;
1022 if (!F_IS_ACTIVE(f)) {
1023 /* this can happen if duplicate names were removed */
1027 permstring(permbuf, f->mode);
1030 /* TODO: indicate '+' if the entry has an ACL. */
1032 #ifdef SUPPORT_LINKS
1033 if (preserve_links && S_ISLNK(f->mode)) {
1034 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1035 permbuf, colwidth, comma_num(len),
1036 timestring(f->modtime), f_name(f, NULL),
1040 if (missing_args == 2 && f->mode == 0) {
1041 rprintf(FINFO, "%-*s %s\n",
1042 colwidth + 31, "*missing",
1045 rprintf(FINFO, "%s %*s %s %s\n",
1046 permbuf, colwidth, comma_num(len),
1047 timestring(f->modtime), f_name(f, NULL));
1051 static int phase = 0;
1052 static int dflt_perms;
1054 static int implied_dirs_are_missing;
1055 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1056 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1058 return F_DEPTH(file) > F_DEPTH(subtree)
1059 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1062 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1063 * make sure it exists, and has the right permissions/timestamp info. For
1064 * all other non-regular files (symlinks, etc.) we create them here. For
1065 * regular files that have changed, we try to find a basis file and then
1066 * start sending checksums. The ndx is the file's unique index value.
1068 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1069 * passed to delete_item(), which can use it during a recursive delete.)
1071 * Note that f_out is set to -1 when doing final directory-permission and
1072 * modification-time repair. */
1073 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1074 int itemizing, enum logcode code, int f_out)
1076 static const char *parent_dirname = "";
1077 /* Missing dir not created due to --dry-run; will still be scanned. */
1078 static struct file_struct *dry_missing_dir = NULL;
1079 /* Missing dir whose contents are skipped altogether due to
1080 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1081 static struct file_struct *skip_dir = NULL;
1082 static struct file_list *fuzzy_dirlist = NULL;
1083 static int need_fuzzy_dirlist = 0;
1084 struct file_struct *fuzzy_file = NULL;
1085 int fd = -1, f_copy = -1;
1087 STRUCT_STAT partial_st;
1088 struct file_struct *back_file = NULL;
1089 int statret, real_ret, stat_errno;
1090 char *fnamecmp, *partialptr, *backupptr = NULL;
1091 char fnamecmpbuf[MAXPATHLEN];
1092 uchar fnamecmp_type;
1093 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1094 int is_dir = !S_ISDIR(file->mode) ? 0
1095 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1098 if (DEBUG_GTE(GENR, 1))
1099 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1103 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1105 list_file_entry(file);
1110 if (is_below(file, skip_dir)) {
1112 file->flags |= FLAG_MISSING_DIR;
1113 #ifdef SUPPORT_HARD_LINKS
1114 else if (F_IS_HLINKED(file))
1115 handle_skipped_hlink(file, itemizing, code, f_out);
1122 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1123 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1126 #ifdef SUPPORT_HARD_LINKS
1127 if (F_IS_HLINKED(file))
1128 handle_skipped_hlink(file, itemizing, code, f_out);
1130 rprintf(FERROR_XFER,
1131 "skipping daemon-excluded %s \"%s\"\n",
1132 is_dir ? "directory" : "file", fname);
1134 goto skipping_dir_contents;
1140 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1141 parent_is_dry_missing:
1142 if (fuzzy_dirlist) {
1143 flist_free(fuzzy_dirlist);
1144 fuzzy_dirlist = NULL;
1146 parent_dirname = "";
1148 stat_errno = ENOENT;
1150 const char *dn = file->dirname ? file->dirname : ".";
1151 dry_missing_dir = NULL;
1152 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1153 if (relative_paths && !implied_dirs
1154 && do_stat(dn, &sx.st) < 0) {
1156 goto parent_is_dry_missing;
1157 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1158 rsyserr(FERROR_XFER, errno,
1159 "recv_generator: mkdir %s failed",
1163 if (fuzzy_dirlist) {
1164 flist_free(fuzzy_dirlist);
1165 fuzzy_dirlist = NULL;
1168 need_fuzzy_dirlist = 1;
1170 if (!preserve_perms)
1171 dflt_perms = default_perms_for_dir(dn);
1174 parent_dirname = dn;
1176 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1177 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1178 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1179 need_fuzzy_dirlist = 0;
1182 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1186 if (missing_args == 2 && file->mode == 0) {
1187 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1190 delete_item(fname, sx.st.st_mode, del_opts);
1194 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1199 file->flags |= FLAG_MISSING_DIR;
1201 #ifdef SUPPORT_HARD_LINKS
1202 else if (F_IS_HLINKED(file))
1203 handle_skipped_hlink(file, itemizing, code, f_out);
1205 if (INFO_GTE(SKIP, 1)) {
1206 rprintf(FINFO, "not creating new %s \"%s\"\n",
1207 is_dir ? "directory" : "file", fname);
1212 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1213 && !am_root && sx.st.st_uid == our_uid)
1214 del_opts |= DEL_NO_UID_WRITE;
1216 if (ignore_existing > 0 && statret == 0
1217 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1218 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1219 rprintf(FINFO, "%s exists\n", fname);
1220 #ifdef SUPPORT_HARD_LINKS
1221 if (F_IS_HLINKED(file))
1222 handle_skipped_hlink(file, itemizing, code, f_out);
1228 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1231 /* In inc_recurse mode we want to make sure any missing
1232 * directories get created while we're still processing
1233 * the parent dir (which allows us to touch the parent
1234 * dir's mtime right away). We will handle the dir in
1235 * full later (right before we handle its contents). */
1237 && (S_ISDIR(sx.st.st_mode)
1238 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1239 goto cleanup; /* Any errors get reported later. */
1240 if (do_mkdir(fname, file->mode & 0700) == 0)
1241 file->flags |= FLAG_DIR_CREATED;
1244 /* The file to be received is a directory, so we need
1245 * to prepare appropriately. If there is already a
1246 * file of that name and it is *not* a directory, then
1247 * we need to delete it. If it doesn't exist, then
1248 * (perhaps recursively) create it. */
1249 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1250 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1251 goto skipping_dir_contents;
1254 if (dry_run && statret != 0) {
1255 if (!dry_missing_dir)
1256 dry_missing_dir = file;
1257 file->flags |= FLAG_MISSING_DIR;
1261 if (file->flags & FLAG_DIR_CREATED)
1263 if (!preserve_perms) { /* See comment in non-dir code below. */
1264 file->mode = dest_mode(file->mode, sx.st.st_mode,
1265 dflt_perms, statret == 0);
1267 if (statret != 0 && basis_dir[0] != NULL) {
1268 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1277 if (itemizing && f_out != -1) {
1278 itemize(fname, file, ndx, statret, &sx,
1279 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1281 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1282 if (!relative_paths || errno != ENOENT
1283 || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1284 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1285 rsyserr(FERROR_XFER, errno,
1286 "recv_generator: mkdir %s failed",
1288 skipping_dir_contents:
1290 "*** Skipping any contents from this failed directory ***\n");
1292 file->flags |= FLAG_MISSING_DIR;
1296 #ifdef SUPPORT_XATTRS
1297 if (preserve_xattrs && statret == 1)
1298 copy_xattrs(fnamecmpbuf, fname);
1300 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1301 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1302 rprintf(code, "%s/\n", fname);
1304 /* We need to ensure that the dirs in the transfer have writable
1305 * permissions during the time we are putting files within them.
1306 * This is then fixed after the transfer is done. */
1308 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1309 mode_t mode = file->mode | S_IWUSR;
1310 if (do_chmod(fname, mode) < 0) {
1311 rsyserr(FERROR_XFER, errno,
1312 "failed to modify permissions on %s",
1315 need_retouch_dir_perms = 1;
1319 if (real_ret != 0 && one_file_system)
1320 real_sx.st.st_dev = filesystem_dev;
1322 if (one_file_system) {
1323 uint32 *devp = F_DIR_DEV_P(file);
1324 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1325 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1328 else if (delete_during && f_out != -1 && !phase
1329 && !(file->flags & FLAG_MISSING_DIR)) {
1330 if (file->flags & FLAG_CONTENT_DIR)
1331 delete_in_dir(fname, file, &real_sx.st.st_dev);
1333 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1338 /* If we're not preserving permissions, change the file-list's
1339 * mode based on the local permissions and some heuristics. */
1340 if (!preserve_perms) {
1341 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1342 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1346 #ifdef SUPPORT_HARD_LINKS
1347 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1348 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1352 if (preserve_links && S_ISLNK(file->mode)) {
1353 #ifdef SUPPORT_LINKS
1354 const char *sl = F_SYMLINK(file);
1355 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1356 if (INFO_GTE(NAME, 1)) {
1358 /* fname contains the destination path, but we
1359 * want to report the source path. */
1360 fname = f_name(file, NULL);
1362 "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1368 char lnk[MAXPATHLEN];
1371 if (S_ISLNK(sx.st.st_mode)
1372 && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1373 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1374 /* The link is pointing to the right place. */
1375 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1377 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1378 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1379 if (preserve_hard_links && F_IS_HLINKED(file))
1380 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1382 if (remove_source_files == 1)
1383 goto return_with_success;
1386 } else if (basis_dir[0] != NULL) {
1387 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1390 #ifndef CAN_HARDLINK_SYMLINK
1392 /* Resort to --copy-dest behavior. */
1402 if (atomic_create(file, fname, sl, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1403 set_file_attrs(fname, file, NULL, NULL, 0);
1405 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1407 itemize(fname, file, ndx, statret, &sx,
1408 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1410 if (code != FNONE && INFO_GTE(NAME, 1))
1411 rprintf(code, "%s -> %s\n", fname, sl);
1412 #ifdef SUPPORT_HARD_LINKS
1413 if (preserve_hard_links && F_IS_HLINKED(file))
1414 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1416 /* This does not check remove_source_files == 1
1417 * because this is one of the items that the old
1418 * --remove-sent-files option would remove. */
1419 if (remove_source_files)
1420 goto return_with_success;
1426 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1427 || (preserve_specials && IS_SPECIAL(file->mode))) {
1429 int del_for_flag = 0;
1430 if (IS_DEVICE(file->mode)) {
1431 uint32 *devp = F_RDEV_P(file);
1432 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1436 if (IS_DEVICE(file->mode)) {
1437 if (!IS_DEVICE(sx.st.st_mode))
1439 del_for_flag = DEL_FOR_DEVICE;
1441 if (!IS_SPECIAL(sx.st.st_mode))
1443 del_for_flag = DEL_FOR_SPECIAL;
1446 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1447 && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1448 /* The device or special file is identical. */
1449 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1451 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1452 #ifdef SUPPORT_HARD_LINKS
1453 if (preserve_hard_links && F_IS_HLINKED(file))
1454 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1456 if (remove_source_files == 1)
1457 goto return_with_success;
1460 } else if (basis_dir[0] != NULL) {
1461 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1464 #ifndef CAN_HARDLINK_SPECIAL
1466 /* Resort to --copy-dest behavior. */
1476 if (DEBUG_GTE(GENR, 1)) {
1477 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1478 fname, (int)file->mode,
1479 (long)major(rdev), (long)minor(rdev));
1481 if (atomic_create(file, fname, NULL, rdev, &sx, del_for_flag)) {
1482 set_file_attrs(fname, file, NULL, NULL, 0);
1484 itemize(fname, file, ndx, statret, &sx,
1485 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1487 if (code != FNONE && INFO_GTE(NAME, 1))
1488 rprintf(code, "%s\n", fname);
1489 #ifdef SUPPORT_HARD_LINKS
1490 if (preserve_hard_links && F_IS_HLINKED(file))
1491 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1493 if (remove_source_files == 1)
1494 goto return_with_success;
1499 if (!S_ISREG(file->mode)) {
1501 fname = f_name(file, NULL);
1502 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1506 if (max_size > 0 && F_LENGTH(file) > max_size) {
1507 if (INFO_GTE(SKIP, 1)) {
1509 fname = f_name(file, NULL);
1510 rprintf(FINFO, "%s is over max-size\n", fname);
1514 if (min_size > 0 && F_LENGTH(file) < min_size) {
1515 if (INFO_GTE(SKIP, 1)) {
1517 fname = f_name(file, NULL);
1518 rprintf(FINFO, "%s is under min-size\n", fname);
1523 if (update_only > 0 && statret == 0
1524 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1525 if (INFO_GTE(SKIP, 1))
1526 rprintf(FINFO, "%s is newer\n", fname);
1527 #ifdef SUPPORT_HARD_LINKS
1528 if (F_IS_HLINKED(file))
1529 handle_skipped_hlink(file, itemizing, code, f_out);
1535 fnamecmp_type = FNAMECMP_FNAME;
1537 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1538 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1541 stat_errno = ENOENT;
1544 if (statret != 0 && basis_dir[0] != NULL) {
1545 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1548 if (remove_source_files == 1)
1549 goto return_with_success;
1553 fnamecmp = fnamecmpbuf;
1562 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1563 && link_stat(partialptr, &partial_st, 0) == 0
1564 && S_ISREG(partial_st.st_mode)) {
1566 goto prepare_to_open;
1570 if (statret != 0 && fuzzy_dirlist) {
1571 int j = find_fuzzy(file, fuzzy_dirlist);
1573 fuzzy_file = fuzzy_dirlist->files[j];
1574 f_name(fuzzy_file, fnamecmpbuf);
1575 if (DEBUG_GTE(FUZZY, 1)) {
1576 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1577 fname, fnamecmpbuf);
1579 sx.st.st_size = F_LENGTH(fuzzy_file);
1581 fnamecmp = fnamecmpbuf;
1582 fnamecmp_type = FNAMECMP_FUZZY;
1587 #ifdef SUPPORT_HARD_LINKS
1588 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1589 cur_flist->in_progress++;
1593 if (stat_errno == ENOENT)
1595 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1600 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1602 else if (fnamecmp_type == FNAMECMP_FUZZY)
1604 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1606 do_unlink(partialptr);
1607 handle_partial_dir(partialptr, PDIR_DELETE);
1609 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1611 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1612 #ifdef SUPPORT_HARD_LINKS
1613 if (preserve_hard_links && F_IS_HLINKED(file))
1614 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1616 if (remove_source_files != 1)
1618 return_with_success:
1620 send_msg_int(MSG_SUCCESS, ndx);
1624 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1625 #ifdef SUPPORT_HARD_LINKS
1626 if (F_IS_HLINKED(file))
1627 handle_skipped_hlink(file, itemizing, code, f_out);
1635 fnamecmp = partialptr;
1636 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1643 if (read_batch || whole_file) {
1644 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1645 if (!(backupptr = get_backup_name(fname)))
1647 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1648 goto pretend_missing;
1649 if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1650 unmake_file(back_file);
1658 if (fuzzy_dirlist) {
1659 int j = flist_find(fuzzy_dirlist, file);
1660 if (j >= 0) /* don't use changing file as future fuzzy basis */
1661 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1665 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1666 rsyserr(FERROR, errno, "failed to open %s, continuing",
1667 full_fname(fnamecmp));
1669 /* pretend the file didn't exist */
1670 #ifdef SUPPORT_HARD_LINKS
1671 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1672 cur_flist->in_progress++;
1676 statret = real_ret = -1;
1680 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1681 if (!(backupptr = get_backup_name(fname))) {
1685 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1687 goto pretend_missing;
1689 if (robust_unlink(backupptr) && errno != ENOENT) {
1690 rsyserr(FERROR_XFER, errno, "unlink %s",
1691 full_fname(backupptr));
1692 unmake_file(back_file);
1697 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1698 rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1699 unmake_file(back_file);
1704 fnamecmp_type = FNAMECMP_BACKUP;
1707 if (DEBUG_GTE(DELTASUM, 3)) {
1708 rprintf(FINFO, "gen mapped %s of size %s\n",
1709 fnamecmp, big_num(sx.st.st_size));
1712 if (DEBUG_GTE(DELTASUM, 2))
1713 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1716 if (remove_source_files && !delay_updates && !phase && !dry_run)
1717 increment_active_files(ndx, itemizing, code);
1718 if (inc_recurse && !dry_run)
1719 cur_flist->in_progress++;
1720 #ifdef SUPPORT_HARD_LINKS
1721 if (preserve_hard_links && F_IS_HLINKED(file))
1722 file->flags |= FLAG_FILE_SENT;
1724 write_ndx(f_out, ndx);
1726 int iflags = ITEM_TRANSFER;
1727 if (always_checksum > 0)
1728 iflags |= ITEM_REPORT_CHANGE;
1729 if (fnamecmp_type != FNAMECMP_FNAME)
1730 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1731 if (fnamecmp_type == FNAMECMP_FUZZY)
1732 iflags |= ITEM_XNAME_FOLLOWS;
1733 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1734 fuzzy_file ? fuzzy_file->basename : NULL);
1739 #ifdef SUPPORT_XATTRS
1740 if (preserve_xattrs)
1741 free_xattr(&real_sx);
1746 #ifdef SUPPORT_HARD_LINKS
1747 if (preserve_hard_links && F_IS_HLINKED(file))
1748 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1755 if (statret != 0 || whole_file)
1756 write_sum_head(f_out, NULL);
1757 else if (sx.st.st_size <= 0) {
1758 write_sum_head(f_out, NULL);
1761 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1763 "WARNING: file is too large for checksum sending: %s\n",
1765 write_sum_head(f_out, NULL);
1772 int save_preserve_xattrs = preserve_xattrs;
1775 #ifdef SUPPORT_XATTRS
1776 if (preserve_xattrs) {
1777 copy_xattrs(fname, backupptr);
1778 preserve_xattrs = 0;
1781 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1782 preserve_xattrs = save_preserve_xattrs;
1783 if (INFO_GTE(BACKUP, 1)) {
1784 rprintf(FINFO, "backed up %s to %s\n",
1787 unmake_file(back_file);
1794 #ifdef SUPPORT_XATTRS
1795 if (preserve_xattrs)
1801 /* If we are replacing an existing hard link, symlink, device, or special file,
1802 * create a temp-name item and rename it into place. Only a symlink or hard
1803 * link puts a non-NULL value into the lnk arg. Only a device puts a non-0
1804 * value into the rdev arg. Specify 0 for the del_for_flag if there is not a
1805 * file to replace. This returns 1 on success and 0 on failure. */
1806 int atomic_create(struct file_struct *file, char *fname, const char *lnk,
1807 dev_t rdev, stat_x *sxp, int del_for_flag)
1809 char tmpname[MAXPATHLEN];
1810 const char *create_name;
1811 int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1813 if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1819 if (make_backups > 0 && !dir_in_the_way) {
1820 if (!make_backup(fname, skip_atomic))
1822 } else if (skip_atomic) {
1823 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1824 if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1829 create_name = skip_atomic ? fname : tmpname;
1832 #ifdef SUPPORT_LINKS
1833 if (S_ISLNK(file->mode)
1834 #ifdef SUPPORT_HARD_LINKS /* The first symlink in a hard-linked cluster is always created. */
1835 && (!F_IS_HLINKED(file) || file->flags & FLAG_HLINK_FIRST)
1838 if (do_symlink(lnk, create_name) < 0) {
1839 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1840 full_fname(create_name), lnk);
1845 #ifdef SUPPORT_HARD_LINKS
1846 if (!hard_link_one(file, create_name, lnk, 0))
1850 if (do_mknod(create_name, file->mode, rdev) < 0) {
1851 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1852 full_fname(create_name));
1858 if (do_rename(tmpname, fname) < 0) {
1859 rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
1860 full_fname(tmpname), full_fname(fname));
1869 #ifdef SUPPORT_HARD_LINKS
1870 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
1871 enum logcode code, int f_out)
1873 char fbuf[MAXPATHLEN];
1875 struct file_list *save_flist = cur_flist;
1877 /* If we skip the last item in a chain of links and there was a
1878 * prior non-skipped hard-link waiting to finish, finish it now. */
1879 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
1882 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
1883 cur_flist->in_progress--; /* undo prior increment */
1885 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
1887 cur_flist = save_flist;
1891 static void touch_up_dirs(struct file_list *flist, int ndx)
1893 static int counter = 0;
1894 struct file_struct *file;
1901 end = flist->used - 1;
1905 /* Fix any directory permissions that were modified during the
1906 * transfer and/or re-set any tweaked modified-time values. */
1907 for (i = start; i <= end; i++, counter++) {
1908 file = flist->files[i];
1909 if (!S_ISDIR(file->mode)
1910 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1912 if (DEBUG_GTE(TIME, 2)) {
1913 fname = f_name(file, NULL);
1914 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
1917 /* Be sure not to retouch permissions with --fake-super. */
1918 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
1919 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
1920 || !(need_retouch_dir_times || fix_dir_perms))
1922 fname = f_name(file, NULL);
1924 do_chmod(fname, file->mode);
1925 if (need_retouch_dir_times) {
1927 if (link_stat(fname, &st, 0) == 0
1928 && cmp_time(st.st_mtime, file->modtime) != 0)
1929 set_modtime(fname, file->modtime, F_MOD_NSEC(file), file->mode);
1931 if (counter >= loopchk_limit) {
1933 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
1935 maybe_flush_socket(0);
1941 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
1943 struct file_struct *file;
1944 struct file_list *flist;
1945 char fbuf[MAXPATHLEN];
1949 #ifdef SUPPORT_HARD_LINKS
1950 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
1951 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
1952 file = flist->files[ndx - flist->ndx_start];
1953 assert(file->flags & FLAG_HLINKED);
1954 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
1955 flist->in_progress--;
1960 if (check_redo && (ndx = get_redo_num()) != -1) {
1961 csum_length = SUM_LENGTH;
1962 max_size = -max_size;
1963 min_size = -min_size;
1964 ignore_existing = -ignore_existing;
1965 ignore_non_existing = -ignore_non_existing;
1966 update_only = -update_only;
1967 always_checksum = -always_checksum;
1968 size_only = -size_only;
1969 append_mode = -append_mode;
1970 make_backups = -make_backups; /* avoid dup backup w/inplace */
1974 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
1976 file = cur_flist->files[ndx - cur_flist->ndx_start];
1978 strlcpy(fbuf, solo_file, sizeof fbuf);
1981 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
1982 cur_flist->to_redo--;
1986 csum_length = SHORT_SUM_LENGTH;
1987 max_size = -max_size;
1988 min_size = -min_size;
1989 ignore_existing = -ignore_existing;
1990 ignore_non_existing = -ignore_non_existing;
1991 update_only = -update_only;
1992 always_checksum = -always_checksum;
1993 size_only = -size_only;
1994 append_mode = -append_mode;
1995 make_backups = -make_backups;
2000 if (cur_flist == first_flist)
2003 /* We only get here if inc_recurse is enabled. */
2004 if (first_flist->in_progress || first_flist->to_redo)
2007 write_ndx(sock_f_out, NDX_DONE);
2008 if (!read_batch && !flist_eof) {
2010 for (flist = first_flist; flist != cur_flist; flist = flist->next)
2011 old_total += flist->used;
2012 maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2015 if (delete_during == 2 || !dir_tweaking) {
2016 /* Skip directory touch-up. */
2017 } else if (first_flist->parent_ndx >= 0)
2018 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2020 flist_free(first_flist); /* updates first_flist */
2024 void generate_files(int f_out, const char *local_name)
2026 int i, ndx, next_loopchk = 0;
2027 char fbuf[MAXPATHLEN];
2030 int save_info_flist = info_levels[INFO_FLIST];
2031 int save_info_progress = info_levels[INFO_PROGRESS];
2033 if (protocol_version >= 29) {
2035 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2036 code = logfile_format_has_i ? FNONE : FLOG;
2037 } else if (am_daemon) {
2038 itemizing = logfile_format_has_i && do_xfers;
2039 maybe_ATTRS_REPORT = ATTRS_REPORT;
2040 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2041 } else if (!am_server) {
2042 itemizing = stdout_format_has_i;
2043 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2044 code = itemizing ? FNONE : FINFO;
2047 maybe_ATTRS_REPORT = ATTRS_REPORT;
2050 solo_file = local_name;
2051 dir_tweaking = !(list_only || solo_file || dry_run);
2052 need_retouch_dir_times = preserve_times > 1;
2053 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2054 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2055 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2056 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2058 if (DEBUG_GTE(GENR, 1))
2059 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2061 if (delete_before && !solo_file && cur_flist->used > 0)
2063 if (delete_during == 2) {
2064 deldelay_size = BIGPATHBUFLEN * 4;
2065 deldelay_buf = new_array(char, deldelay_size);
2067 out_of_memory("delete-delay");
2069 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2071 if (append_mode > 0 || whole_file < 0)
2073 if (DEBUG_GTE(FLIST, 1)) {
2074 rprintf(FINFO, "delta-transmission %s\n",
2076 ? "disabled for local transfer or --whole-file"
2080 dflt_perms = (ACCESSPERMS & ~orig_umask);
2083 #ifdef SUPPORT_HARD_LINKS
2084 if (preserve_hard_links && inc_recurse) {
2085 while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2086 wait_for_receiver();
2090 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2091 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2093 strlcpy(fbuf, solo_file, sizeof fbuf);
2096 ndx = cur_flist->ndx_start - 1;
2097 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2098 if (delete_during && dry_run < 2 && !list_only
2099 && !(fp->flags & FLAG_MISSING_DIR)) {
2100 if (fp->flags & FLAG_CONTENT_DIR) {
2102 if (one_file_system) {
2103 uint32 *devp = F_DIR_DEV_P(fp);
2104 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2106 dirdev = MAKEDEV(0, 0);
2107 delete_in_dir(fbuf, fp, &dirdev);
2109 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2112 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2113 struct file_struct *file = cur_flist->sorted[i];
2115 if (!F_IS_ACTIVE(file))
2121 ndx = i + cur_flist->ndx_start;
2124 strlcpy(fbuf, solo_file, sizeof fbuf);
2127 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2129 check_for_finished_files(itemizing, code, 0);
2131 if (i + cur_flist->ndx_start >= next_loopchk) {
2133 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2135 maybe_flush_socket(0);
2136 next_loopchk += loopchk_limit;
2141 write_ndx(f_out, NDX_DONE);
2146 check_for_finished_files(itemizing, code, 1);
2147 if (cur_flist->next || flist_eof)
2149 wait_for_receiver();
2151 } while ((cur_flist = cur_flist->next) != NULL);
2154 delete_in_dir(NULL, NULL, &dev_zero);
2156 if (DEBUG_GTE(GENR, 1))
2157 rprintf(FINFO, "generate_files phase=%d\n", phase);
2160 check_for_finished_files(itemizing, code, 1);
2163 wait_for_receiver();
2167 if (DEBUG_GTE(GENR, 1))
2168 rprintf(FINFO, "generate_files phase=%d\n", phase);
2170 write_ndx(f_out, NDX_DONE);
2172 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2173 if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2174 write_ndx(f_out, NDX_DONE);
2176 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2177 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2178 write_del_stats(f_out);
2179 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2180 write_ndx(f_out, NDX_DONE);
2183 /* Read MSG_DONE for the redo phase (and any prior messages). */
2185 check_for_finished_files(itemizing, code, 0);
2186 if (msgdone_cnt > 1)
2188 wait_for_receiver();
2191 if (protocol_version >= 29) {
2193 if (DEBUG_GTE(GENR, 1))
2194 rprintf(FINFO, "generate_files phase=%d\n", phase);
2195 if (!EARLY_DELAY_DONE_MSG()) {
2196 write_ndx(f_out, NDX_DONE);
2197 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2198 write_ndx(f_out, NDX_DONE);
2200 /* Read MSG_DONE for delay-updates phase & prior messages. */
2201 while (msgdone_cnt == 2)
2202 wait_for_receiver();
2205 info_levels[INFO_FLIST] = save_info_flist;
2206 info_levels[INFO_PROGRESS] = save_info_progress;
2208 if (delete_during == 2)
2209 do_delayed_deletions(fbuf);
2210 if (delete_after && !solo_file && file_total > 0)
2213 if (max_delete >= 0 && skipped_deletes) {
2215 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2217 io_error |= IOERR_DEL_LIMIT;
2220 if (protocol_version >= 31) {
2221 if (!EARLY_DELETE_DONE_MSG()) {
2222 if (INFO_GTE(STATS, 2) || read_batch)
2223 write_del_stats(f_out);
2224 write_ndx(f_out, NDX_DONE);
2227 /* Read MSG_DONE for late-delete phase & prior messages. */
2228 while (msgdone_cnt == 3)
2229 wait_for_receiver();
2232 if ((need_retouch_dir_perms || need_retouch_dir_times)
2233 && dir_tweaking && (!inc_recurse || delete_during == 2))
2234 touch_up_dirs(dir_flist, -1);
2236 if (DEBUG_GTE(GENR, 1))
2237 rprintf(FINFO, "generate_files finished\n");