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;
47 extern int delete_mode;
48 extern int delete_before;
49 extern int delete_during;
50 extern int delete_after;
51 extern int missing_args;
52 extern int msgdone_cnt;
53 extern int ignore_errors;
54 extern int remove_source_files;
55 extern int delay_updates;
56 extern int update_only;
57 extern int human_readable;
58 extern int ignore_existing;
59 extern int ignore_non_existing;
61 extern int append_mode;
62 extern int make_backups;
63 extern int csum_length;
64 extern int ignore_times;
66 extern OFF_T max_size;
67 extern OFF_T min_size;
70 extern int allowed_lull;
71 extern int sock_f_out;
72 extern int protocol_version;
73 extern int file_total;
74 extern int fuzzy_basis;
75 extern int always_checksum;
76 extern int checksum_len;
77 extern char *partial_dir;
78 extern int compare_dest;
81 extern int whole_file;
83 extern int read_batch;
84 extern int safe_symlinks;
85 extern long block_size; /* "long" because popt can't set an int32. */
86 extern int unsort_ndx;
87 extern int max_delete;
88 extern int force_delete;
89 extern int one_file_system;
90 extern int skipped_deletes;
91 extern dev_t filesystem_dev;
92 extern mode_t orig_umask;
95 extern char *basis_dir[MAX_BASIS_DIRS+1];
96 extern struct file_list *cur_flist, *first_flist, *dir_flist;
97 extern filter_rule_list filter_list, daemon_filter_list;
99 int maybe_ATTRS_REPORT = 0;
101 static dev_t dev_zero;
102 static int deldelay_size = 0, deldelay_cnt = 0;
103 static char *deldelay_buf = NULL;
104 static int deldelay_fd = -1;
105 static int loopchk_limit;
106 static int dir_tweaking;
107 static int symlink_timeset_failed_flags;
108 static int need_retouch_dir_times;
109 static int need_retouch_dir_perms;
110 static const char *solo_file = NULL;
113 TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
116 /* Forward declarations. */
117 #ifdef SUPPORT_HARD_LINKS
118 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
119 enum logcode code, int f_out);
122 #define EARLY_DELAY_DONE_MSG() (!delay_updates)
123 #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
125 static int start_delete_delay_temp(void)
127 char fnametmp[MAXPATHLEN];
128 int save_dry_run = dry_run;
131 if (!get_tmpname(fnametmp, "deldelay", False)
132 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
133 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
134 inc_recurse ? "" : " -- switching to --delete-after");
136 delete_after = !inc_recurse;
137 dry_run = save_dry_run;
141 dry_run = save_dry_run;
145 static int flush_delete_delay(void)
147 if (deldelay_fd < 0 && !start_delete_delay_temp())
149 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
150 rsyserr(FERROR, errno, "flush of delete-delay buffer");
152 delete_after = !inc_recurse;
160 static int remember_delete(struct file_struct *file, const char *fname, int flags)
164 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
167 if (flags & DEL_NO_UID_WRITE)
168 deldelay_buf[deldelay_cnt++] = '!';
171 len = snprintf(deldelay_buf + deldelay_cnt,
172 deldelay_size - deldelay_cnt,
174 (int)file->mode, fname, '\0');
175 if ((deldelay_cnt += len) <= deldelay_size)
178 if (!flush_delete_delay())
185 static int read_delay_line(char *buf, int *flags_p)
187 static int read_pos = 0;
189 char *bp, *past_space;
192 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
193 if (j < deldelay_cnt)
195 if (deldelay_fd < 0) {
200 deldelay_cnt -= read_pos;
201 if (deldelay_cnt == deldelay_size)
203 if (deldelay_cnt && read_pos) {
204 memmove(deldelay_buf, deldelay_buf + read_pos,
207 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
208 deldelay_size - deldelay_cnt);
212 "ERROR: unexpected EOF in delete-delay file.\n");
217 rsyserr(FERROR, errno,
218 "reading delete-delay file");
225 bp = deldelay_buf + read_pos;
228 *flags_p = DEL_NO_UID_WRITE;
232 if (sscanf(bp, "%x ", &mode) != 1) {
234 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
237 past_space = strchr(bp, ' ') + 1;
238 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
241 if (len > MAXPATHLEN) {
242 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
246 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
247 * instead of returning a pointer to our buffer. */
248 memcpy(buf, past_space, len);
253 static void do_delayed_deletions(char *delbuf)
257 if (deldelay_fd >= 0) {
258 if (deldelay_cnt && !flush_delete_delay())
260 lseek(deldelay_fd, 0, 0);
262 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
263 delete_item(delbuf, mode, flags | DEL_RECURSE);
264 if (deldelay_fd >= 0)
268 /* This function is used to implement per-directory deletion, and is used by
269 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
270 * MAXPATHLEN buffer with the name of the directory in it (the functions we
271 * call will append names onto the end, but the old dir value will be restored
273 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
275 static int already_warned = 0;
276 struct file_list *dirlist;
277 char delbuf[MAXPATHLEN];
281 change_local_filter_dir(NULL, 0, 0);
285 if (DEBUG_GTE(DEL, 2))
286 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
289 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
291 if (io_error & IOERR_GENERAL && !ignore_errors) {
295 "IO error encountered -- skipping file deletion\n");
301 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
303 if (one_file_system) {
304 if (file->flags & FLAG_TOP_DIR)
305 filesystem_dev = *fs_dev;
306 else if (filesystem_dev != *fs_dev)
310 dirlist = get_dirlist(fbuf, dlen, 0);
312 /* If an item in dirlist is not found in flist, delete it
313 * from the filesystem. */
314 for (i = dirlist->used; i--; ) {
315 struct file_struct *fp = dirlist->files[i];
316 if (!F_IS_ACTIVE(fp))
318 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
319 if (INFO_GTE(MOUNT, 1))
320 rprintf(FINFO, "cannot delete mount point: %s\n",
324 /* Here we want to match regardless of file type. Replacement
325 * of a file with one of another type is handled separately by
326 * a delete_item call with a DEL_MAKE_ROOM flag. */
327 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
328 int flags = DEL_RECURSE;
329 if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
330 flags |= DEL_NO_UID_WRITE;
332 if (delete_during == 2) {
333 if (!remember_delete(fp, delbuf, flags))
336 delete_item(delbuf, fp->mode, flags);
343 /* This deletes any files on the receiving side that are not present on the
344 * sending side. This is used by --delete-before and --delete-after. */
345 static void do_delete_pass(void)
347 char fbuf[MAXPATHLEN];
351 /* dry_run is incremented when the destination doesn't exist yet. */
352 if (dry_run > 1 || list_only)
355 for (j = 0; j < cur_flist->used; j++) {
356 struct file_struct *file = cur_flist->sorted[j];
360 if (!(file->flags & FLAG_CONTENT_DIR)) {
361 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
365 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
366 rprintf(FINFO, "deleting in %s\n", fbuf);
368 if (link_stat(fbuf, &st, keep_dirlinks) < 0
369 || !S_ISDIR(st.st_mode))
372 delete_in_dir(fbuf, file, &st.st_dev);
374 delete_in_dir(NULL, NULL, &dev_zero);
376 if (INFO_GTE(FLIST, 2) && !am_server)
377 rprintf(FINFO, " \r");
380 static inline int time_differs(struct file_struct *file, stat_x *sxp)
382 return cmp_time(sxp->st.st_mtime, file->modtime);
385 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
388 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
390 if (preserve_executability)
391 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
396 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
398 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
401 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
408 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
411 if (!ACL_READY(*sxp))
413 if (set_acl(NULL, file, sxp, file->mode))
421 #ifdef SUPPORT_XATTRS
422 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
424 if (preserve_xattrs) {
425 if (!XATTR_READY(*sxp))
426 get_xattr(fname, sxp);
427 if (xattr_diff(file, sxp, 0))
435 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
437 if (S_ISLNK(file->mode)) {
438 #ifdef CAN_SET_SYMLINK_TIMES
439 if (preserve_times & PRESERVE_LINK_TIMES && time_differs(file, sxp))
442 #ifdef CAN_CHMOD_SYMLINK
443 if (perms_differ(file, sxp))
446 #ifdef CAN_CHOWN_SYMLINK
447 if (ownership_differs(file, sxp))
450 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
451 if (acls_differ(fname, file, sxp))
454 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
455 if (xattrs_differ(fname, file, sxp))
459 if (preserve_times && time_differs(file, sxp))
461 if (perms_differ(file, sxp))
463 if (ownership_differs(file, sxp))
466 if (acls_differ(fname, file, sxp))
469 #ifdef SUPPORT_XATTRS
470 if (xattrs_differ(fname, file, sxp))
478 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
479 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
482 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
483 int keep_time = !preserve_times ? 0
484 : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
485 : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
488 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
489 iflags |= ITEM_REPORT_SIZE;
490 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
491 if (iflags & ITEM_LOCAL_CHANGE)
492 iflags |= symlink_timeset_failed_flags;
494 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
495 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
496 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
497 iflags |= ITEM_REPORT_TIME;
498 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
499 if (S_ISLNK(file->mode)) {
503 if (preserve_perms) {
504 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
505 iflags |= ITEM_REPORT_PERMS;
506 } else if (preserve_executability
507 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
508 iflags |= ITEM_REPORT_PERMS;
509 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
510 iflags |= ITEM_REPORT_OWNER;
511 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
512 && sxp->st.st_gid != (gid_t)F_GROUP(file))
513 iflags |= ITEM_REPORT_GROUP;
515 if (preserve_acls && !S_ISLNK(file->mode)) {
516 if (!ACL_READY(*sxp))
517 get_acl(fnamecmp, sxp);
518 if (set_acl(NULL, file, sxp, file->mode))
519 iflags |= ITEM_REPORT_ACL;
522 #ifdef SUPPORT_XATTRS
523 if (preserve_xattrs) {
524 if (!XATTR_READY(*sxp))
525 get_xattr(fnamecmp, sxp);
526 if (xattr_diff(file, sxp, 1))
527 iflags |= ITEM_REPORT_XATTR;
531 #ifdef SUPPORT_XATTRS
532 if (preserve_xattrs && xattr_diff(file, NULL, 1))
533 iflags |= ITEM_REPORT_XATTR;
535 iflags |= ITEM_IS_NEW;
539 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
540 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
541 if (protocol_version >= 29) {
543 write_ndx(sock_f_out, ndx);
544 write_shortint(sock_f_out, iflags);
545 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
546 write_byte(sock_f_out, fnamecmp_type);
547 if (iflags & ITEM_XNAME_FOLLOWS)
548 write_vstring(sock_f_out, xname, strlen(xname));
549 #ifdef SUPPORT_XATTRS
550 if (preserve_xattrs && do_xfers
551 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
552 int fd = iflags & ITEM_REPORT_XATTR
553 && (protocol_version < 31 || !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
555 send_xattr_request(NULL, file, fd);
558 } else if (ndx >= 0) {
559 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
560 log_item(code, file, iflags, xname);
566 /* Perform our quick-check heuristic for determining if a file is unchanged. */
567 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
569 if (st->st_size != F_LENGTH(file))
572 /* if always checksum is set then we use the checksum instead
573 of the file time to determine whether to sync */
574 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
575 char sum[MAX_DIGEST_LEN];
576 file_checksum(fn, sum, st->st_size);
577 return memcmp(sum, F_SUM(file), checksum_len) == 0;
586 return cmp_time(st->st_mtime, file->modtime) == 0;
591 * set (initialize) the size entries in the per-file sum_struct
592 * calculating dynamic block and checksum sizes.
594 * This is only called from generate_and_send_sums() but is a separate
595 * function to encapsulate the logic.
597 * The block size is a rounded square root of file length.
599 * The checksum size is determined according to:
600 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
601 * provided by Donovan Baarda which gives a probability of rsync
602 * algorithm corrupting data and falling back using the whole md4
605 * This might be made one of several selectable heuristics.
607 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
614 /* The file length overflowed our int64 var, so we can't process this file. */
615 sum->count = -1; /* indicate overflow error */
620 blength = block_size;
621 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
622 blength = BLOCK_SIZE;
624 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
627 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
628 if (c < 0 || c >= max_blength)
629 blength = max_blength;
634 if (len < (int64)blength * blength)
637 } while (c >= 8); /* round to multiple of 8 */
638 blength = MAX(blength, BLOCK_SIZE);
642 if (protocol_version < 27) {
643 s2length = csum_length;
644 } else if (csum_length == SUM_LENGTH) {
645 s2length = SUM_LENGTH;
648 int b = BLOCKSUM_BIAS;
649 for (l = len; l >>= 1; b += 2) {}
650 for (c = blength; (c >>= 1) && b; b--) {}
651 /* add a bit, subtract rollsum, round up. */
652 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
653 s2length = MAX(s2length, csum_length);
654 s2length = MIN(s2length, SUM_LENGTH);
658 sum->blength = blength;
659 sum->s2length = s2length;
660 sum->remainder = (int32)(len % blength);
661 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
663 if ((int64)sum->count != l)
666 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
668 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
669 big_num(sum->count), (long)sum->remainder, (long)sum->blength,
670 sum->s2length, big_num(sum->flength));
676 * Generate and send a stream of signatures/checksums that describe a buffer
678 * Generate approximately one checksum every block_len bytes.
680 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
683 struct map_struct *mapbuf;
684 struct sum_struct sum;
687 sum_sizes_sqroot(&sum, len);
690 write_sum_head(f_out, &sum);
692 if (append_mode > 0 && f_copy < 0)
696 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
700 for (i = 0; i < sum.count; i++) {
701 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
702 char *map = map_ptr(mapbuf, offset, n1);
703 char sum2[SUM_LENGTH];
710 full_write(f_copy, map, n1);
715 sum1 = get_checksum1(map, n1);
716 get_checksum2(map, n1, sum2);
718 if (DEBUG_GTE(DELTASUM, 3)) {
720 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
721 big_num(i), big_num(offset - n1), (long)n1,
722 (unsigned long)sum1);
724 write_int(f_out, sum1);
725 write_buf(f_out, sum2, sum.s2length);
735 /* Try to find a filename in the same dir as "fname" with a similar name. */
736 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
738 int fname_len, fname_suf_len;
739 const char *fname_suf, *fname = file->basename;
740 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
741 int j, lowest_j = -1;
743 fname_len = strlen(fname);
744 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
746 for (j = 0; j < dirlist->used; j++) {
747 struct file_struct *fp = dirlist->files[j];
748 const char *suf, *name;
752 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
753 || fp->flags & FLAG_FILE_SENT)
758 if (F_LENGTH(fp) == F_LENGTH(file)
759 && cmp_time(fp->modtime, file->modtime) == 0) {
760 if (DEBUG_GTE(FUZZY, 2)) {
762 "fuzzy size/modtime match for %s\n",
769 suf = find_filename_suffix(name, len, &suf_len);
771 dist = fuzzy_distance(name, len, fname, fname_len);
772 /* Add some extra weight to how well the suffixes match. */
773 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
775 if (DEBUG_GTE(FUZZY, 2)) {
776 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
777 name, (int)(dist>>16), (int)(dist&0xFFFF));
779 if (dist <= lowest_dist) {
788 /* Copy a file found in our --copy-dest handling. */
789 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
791 char buf[MAXPATHLEN];
792 const char *copy_to, *partialptr;
793 int save_preserve_xattrs = preserve_xattrs;
797 /* Let copy_file open the destination in place. */
801 fd_w = open_tmpfile(buf, dest, file);
806 cleanup_set(copy_to, NULL, NULL, -1, -1);
807 if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
808 if (INFO_GTE(COPY, 1)) {
809 rsyserr(FINFO, errno, "copy_file %s => %s",
810 full_fname(src), copy_to);
812 /* Try to clean up. */
817 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
818 preserve_xattrs = 0; /* xattrs were copied with file */
819 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
820 preserve_xattrs = save_preserve_xattrs;
825 /* This is only called for regular files. We return -2 if we've finished
826 * handling the file, -1 if no dest-linking occurred, or a non-negative
827 * value if we found an alternate basis file. */
828 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
829 char *cmpbuf, stat_x *sxp, int itemizing,
837 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
838 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
840 switch (match_level) {
846 if (!unchanged_file(cmpbuf, file, &sxp->st))
852 if (!unchanged_attrs(cmpbuf, file, sxp))
859 } while (basis_dir[++j] != NULL);
864 if (j != best_match) {
866 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
867 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
871 if (match_level == 3 && !copy_dest) {
872 #ifdef SUPPORT_HARD_LINKS
874 if (!hard_link_one(file, fname, cmpbuf, 1))
876 if (preserve_hard_links && F_IS_HLINKED(file))
877 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
878 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
879 itemize(cmpbuf, file, ndx, 1, sxp,
880 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
886 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
887 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
888 rprintf(FCLIENT, "%s is uptodate\n", fname);
892 if (match_level >= 2) {
893 #ifdef SUPPORT_HARD_LINKS
894 try_a_copy: /* Copy the file locally. */
896 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
899 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
900 if (maybe_ATTRS_REPORT
901 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
902 || (INFO_GTE(NAME, 2) && match_level == 3))) {
903 code = match_level == 3 ? FCLIENT : FINFO;
904 rprintf(code, "%s%s\n", fname,
905 match_level == 3 ? " is uptodate" : "");
907 #ifdef SUPPORT_HARD_LINKS
908 if (preserve_hard_links && F_IS_HLINKED(file))
909 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
914 return FNAMECMP_BASIS_DIR_LOW + j;
917 /* This is only called for non-regular files. We return -2 if we've finished
918 * handling the file, or -1 if no dest-linking occurred, or a non-negative
919 * value if we found an alternate basis file. */
920 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
921 char *cmpbuf, stat_x *sxp, int itemizing,
926 enum nonregtype type;
929 char lnk[MAXPATHLEN];
934 #ifndef SUPPORT_LINKS
935 if (S_ISLNK(file->mode))
938 if (S_ISDIR(file->mode)) {
940 } else if (IS_SPECIAL(file->mode))
942 else if (IS_DEVICE(file->mode))
945 else if (S_ISLNK(file->mode))
950 "internal: try_dests_non() called with invalid mode (%o)\n",
952 exit_cleanup(RERR_UNSUPPORTED);
956 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
957 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
961 if (!S_ISDIR(sxp->st.st_mode))
965 if (!IS_SPECIAL(sxp->st.st_mode))
969 if (!IS_DEVICE(sxp->st.st_mode))
974 if (!S_ISLNK(sxp->st.st_mode))
981 if (match_level < 1) {
990 devp = F_RDEV_P(file);
991 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
996 if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
999 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1006 if (match_level < 2) {
1010 if (unchanged_attrs(cmpbuf, file, sxp)) {
1015 } while (basis_dir[++j] != NULL);
1020 if (j != best_match) {
1022 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1023 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1027 if (match_level == 3) {
1028 #ifdef SUPPORT_HARD_LINKS
1030 #ifndef CAN_HARDLINK_SYMLINK
1031 && !S_ISLNK(file->mode)
1033 #ifndef CAN_HARDLINK_SPECIAL
1034 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1036 && !S_ISDIR(file->mode)) {
1037 if (do_link(cmpbuf, fname) < 0) {
1038 rsyserr(FERROR_XFER, errno,
1039 "failed to hard-link %s with %s",
1043 if (preserve_hard_links && F_IS_HLINKED(file))
1044 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1048 if (itemizing && stdout_format_has_i
1049 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1050 int chg = compare_dest && type != TYPE_DIR ? 0
1051 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1052 char *lp = match_level == 3 ? "" : NULL;
1053 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1055 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1056 rprintf(FCLIENT, "%s%s is uptodate\n",
1057 fname, type == TYPE_DIR ? "/" : "");
1065 static void list_file_entry(struct file_struct *f)
1067 char permbuf[PERMSTRING_SIZE];
1069 int colwidth = human_readable ? 14 : 11;
1071 if (!F_IS_ACTIVE(f)) {
1072 /* this can happen if duplicate names were removed */
1076 permstring(permbuf, f->mode);
1079 /* TODO: indicate '+' if the entry has an ACL. */
1081 #ifdef SUPPORT_LINKS
1082 if (preserve_links && S_ISLNK(f->mode)) {
1083 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1084 permbuf, colwidth, human_num(len),
1085 timestring(f->modtime), f_name(f, NULL),
1089 if (missing_args == 2 && f->mode == 0) {
1090 rprintf(FINFO, "%-*s %s\n",
1091 colwidth + 31, "*missing",
1094 rprintf(FINFO, "%s %*s %s %s\n",
1095 permbuf, colwidth, human_num(len),
1096 timestring(f->modtime), f_name(f, NULL));
1100 static int phase = 0;
1101 static int dflt_perms;
1103 static int implied_dirs_are_missing;
1104 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1105 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1107 return F_DEPTH(file) > F_DEPTH(subtree)
1108 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1111 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1112 * make sure it exists, and has the right permissions/timestamp info. For
1113 * all other non-regular files (symlinks, etc.) we create them here. For
1114 * regular files that have changed, we try to find a basis file and then
1115 * start sending checksums. The ndx is the file's unique index value.
1117 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1118 * passed to delete_item(), which can use it during a recursive delete.)
1120 * Note that f_out is set to -1 when doing final directory-permission and
1121 * modification-time repair. */
1122 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1123 int itemizing, enum logcode code, int f_out)
1125 static const char *parent_dirname = "";
1126 /* Missing dir not created due to --dry-run; will still be scanned. */
1127 static struct file_struct *dry_missing_dir = NULL;
1128 /* Missing dir whose contents are skipped altogether due to
1129 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1130 static struct file_struct *skip_dir = NULL;
1131 static struct file_list *fuzzy_dirlist = NULL;
1132 static int need_fuzzy_dirlist = 0;
1133 struct file_struct *fuzzy_file = NULL;
1134 int fd = -1, f_copy = -1;
1136 STRUCT_STAT partial_st;
1137 struct file_struct *back_file = NULL;
1138 int statret, real_ret, stat_errno;
1139 char *fnamecmp, *partialptr, *backupptr = NULL;
1140 char fnamecmpbuf[MAXPATHLEN];
1141 uchar fnamecmp_type;
1142 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1143 int is_dir = !S_ISDIR(file->mode) ? 0
1144 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1147 if (DEBUG_GTE(GENR, 1))
1148 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1152 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1154 list_file_entry(file);
1159 if (is_below(file, skip_dir)) {
1161 file->flags |= FLAG_MISSING_DIR;
1162 #ifdef SUPPORT_HARD_LINKS
1163 else if (F_IS_HLINKED(file))
1164 handle_skipped_hlink(file, itemizing, code, f_out);
1172 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1173 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1176 #ifdef SUPPORT_HARD_LINKS
1177 if (F_IS_HLINKED(file))
1178 handle_skipped_hlink(file, itemizing, code, f_out);
1180 rprintf(FERROR_XFER,
1181 "ERROR: daemon refused to receive %s \"%s\"\n",
1182 is_dir ? "directory" : "file", fname);
1184 goto skipping_dir_contents;
1189 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1190 parent_is_dry_missing:
1191 if (fuzzy_dirlist) {
1192 flist_free(fuzzy_dirlist);
1193 fuzzy_dirlist = NULL;
1195 parent_dirname = "";
1197 stat_errno = ENOENT;
1199 const char *dn = file->dirname ? file->dirname : ".";
1200 dry_missing_dir = NULL;
1201 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1202 if (relative_paths && !implied_dirs
1203 && do_stat(dn, &sx.st) < 0) {
1205 goto parent_is_dry_missing;
1206 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1207 rsyserr(FERROR_XFER, errno,
1208 "recv_generator: mkdir %s failed",
1212 if (fuzzy_dirlist) {
1213 flist_free(fuzzy_dirlist);
1214 fuzzy_dirlist = NULL;
1217 need_fuzzy_dirlist = 1;
1219 if (!preserve_perms)
1220 dflt_perms = default_perms_for_dir(dn);
1223 parent_dirname = dn;
1225 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1226 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1227 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES);
1228 need_fuzzy_dirlist = 0;
1231 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1235 if (missing_args == 2 && file->mode == 0) {
1236 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1239 delete_item(fname, sx.st.st_mode, del_opts);
1243 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1248 file->flags |= FLAG_MISSING_DIR;
1250 #ifdef SUPPORT_HARD_LINKS
1251 else if (F_IS_HLINKED(file))
1252 handle_skipped_hlink(file, itemizing, code, f_out);
1254 if (INFO_GTE(SKIP, 1)) {
1255 rprintf(FINFO, "not creating new %s \"%s\"\n",
1256 is_dir ? "directory" : "file", fname);
1261 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1262 && !am_root && sx.st.st_uid == our_uid)
1263 del_opts |= DEL_NO_UID_WRITE;
1265 if (ignore_existing > 0 && statret == 0
1266 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1267 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1268 rprintf(FINFO, "%s exists\n", fname);
1269 #ifdef SUPPORT_HARD_LINKS
1270 if (F_IS_HLINKED(file))
1271 handle_skipped_hlink(file, itemizing, code, f_out);
1280 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1283 /* For --fake-super, the dir must be useable by the copying
1284 * user, just like it would be for root. */
1285 added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1289 /* In inc_recurse mode we want to make sure any missing
1290 * directories get created while we're still processing
1291 * the parent dir (which allows us to touch the parent
1292 * dir's mtime right away). We will handle the dir in
1293 * full later (right before we handle its contents). */
1295 && (S_ISDIR(sx.st.st_mode)
1296 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1297 goto cleanup; /* Any errors get reported later. */
1298 if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1299 file->flags |= FLAG_DIR_CREATED;
1302 /* The file to be received is a directory, so we need
1303 * to prepare appropriately. If there is already a
1304 * file of that name and it is *not* a directory, then
1305 * we need to delete it. If it doesn't exist, then
1306 * (perhaps recursively) create it. */
1307 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1308 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1309 goto skipping_dir_contents;
1312 if (dry_run && statret != 0) {
1313 if (!dry_missing_dir)
1314 dry_missing_dir = file;
1315 file->flags |= FLAG_MISSING_DIR;
1319 if (file->flags & FLAG_DIR_CREATED)
1321 if (!preserve_perms) { /* See comment in non-dir code below. */
1322 file->mode = dest_mode(file->mode, sx.st.st_mode,
1323 dflt_perms, statret == 0);
1325 if (statret != 0 && basis_dir[0] != NULL) {
1326 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1332 } else if (j >= 0) {
1334 fnamecmp = fnamecmpbuf;
1337 if (itemizing && f_out != -1) {
1338 itemize(fnamecmp, file, ndx, statret, &sx,
1339 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1341 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1342 if (!relative_paths || errno != ENOENT
1343 || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1344 || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1345 rsyserr(FERROR_XFER, errno,
1346 "recv_generator: mkdir %s failed",
1348 skipping_dir_contents:
1350 "*** Skipping any contents from this failed directory ***\n");
1352 file->flags |= FLAG_MISSING_DIR;
1357 #ifdef SUPPORT_XATTRS
1358 if (preserve_xattrs && statret == 1)
1359 copy_xattrs(fnamecmpbuf, fname);
1361 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1362 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1363 rprintf(code, "%s/\n", fname);
1365 /* We need to ensure that the dirs in the transfer have both
1366 * readable and writable permissions during the time we are
1367 * putting files within them. This is then restored to the
1368 * former permissions after the transfer is done. */
1370 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1371 mode_t mode = file->mode | S_IRWXU;
1372 if (do_chmod(fname, mode) < 0) {
1373 rsyserr(FERROR_XFER, errno,
1374 "failed to modify permissions on %s",
1377 need_retouch_dir_perms = 1;
1381 if (real_ret != 0 && one_file_system)
1382 real_sx.st.st_dev = filesystem_dev;
1384 if (one_file_system) {
1385 uint32 *devp = F_DIR_DEV_P(file);
1386 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1387 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1390 else if (delete_during && f_out != -1 && !phase
1391 && !(file->flags & FLAG_MISSING_DIR)) {
1392 if (file->flags & FLAG_CONTENT_DIR)
1393 delete_in_dir(fname, file, &real_sx.st.st_dev);
1395 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1400 /* If we're not preserving permissions, change the file-list's
1401 * mode based on the local permissions and some heuristics. */
1402 if (!preserve_perms) {
1403 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1404 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1408 #ifdef SUPPORT_HARD_LINKS
1409 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1410 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1414 if (preserve_links && S_ISLNK(file->mode)) {
1415 #ifdef SUPPORT_LINKS
1416 const char *sl = F_SYMLINK(file);
1417 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1418 if (INFO_GTE(NAME, 1)) {
1420 /* fname contains the destination path, but we
1421 * want to report the source path. */
1422 fname = f_name(file, NULL);
1425 "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1431 char lnk[MAXPATHLEN];
1434 if (S_ISLNK(sx.st.st_mode)
1435 && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1436 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1437 /* The link is pointing to the right place. */
1438 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1440 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1441 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1442 if (preserve_hard_links && F_IS_HLINKED(file))
1443 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1445 if (remove_source_files == 1)
1446 goto return_with_success;
1449 } else if (basis_dir[0] != NULL) {
1450 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1453 #ifndef CAN_HARDLINK_SYMLINK
1455 /* Resort to --copy-dest behavior. */
1465 if (atomic_create(file, fname, sl, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1466 set_file_attrs(fname, file, NULL, NULL, 0);
1468 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1470 itemize(fname, file, ndx, statret, &sx,
1471 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1473 if (code != FNONE && INFO_GTE(NAME, 1))
1474 rprintf(code, "%s -> %s\n", fname, sl);
1475 #ifdef SUPPORT_HARD_LINKS
1476 if (preserve_hard_links && F_IS_HLINKED(file))
1477 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1479 /* This does not check remove_source_files == 1
1480 * because this is one of the items that the old
1481 * --remove-sent-files option would remove. */
1482 if (remove_source_files)
1483 goto return_with_success;
1489 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1490 || (preserve_specials && IS_SPECIAL(file->mode))) {
1492 int del_for_flag = 0;
1493 if (IS_DEVICE(file->mode)) {
1494 uint32 *devp = F_RDEV_P(file);
1495 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1499 if (IS_DEVICE(file->mode)) {
1500 if (!IS_DEVICE(sx.st.st_mode))
1502 del_for_flag = DEL_FOR_DEVICE;
1504 if (!IS_SPECIAL(sx.st.st_mode))
1506 del_for_flag = DEL_FOR_SPECIAL;
1509 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1510 && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1511 /* The device or special file is identical. */
1512 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1514 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1515 #ifdef SUPPORT_HARD_LINKS
1516 if (preserve_hard_links && F_IS_HLINKED(file))
1517 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1519 if (remove_source_files == 1)
1520 goto return_with_success;
1523 } else if (basis_dir[0] != NULL) {
1524 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1527 #ifndef CAN_HARDLINK_SPECIAL
1529 /* Resort to --copy-dest behavior. */
1539 if (DEBUG_GTE(GENR, 1)) {
1540 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1541 fname, (int)file->mode,
1542 (long)major(rdev), (long)minor(rdev));
1544 if (atomic_create(file, fname, NULL, rdev, &sx, del_for_flag)) {
1545 set_file_attrs(fname, file, NULL, NULL, 0);
1547 itemize(fname, file, ndx, statret, &sx,
1548 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1550 if (code != FNONE && INFO_GTE(NAME, 1))
1551 rprintf(code, "%s\n", fname);
1552 #ifdef SUPPORT_HARD_LINKS
1553 if (preserve_hard_links && F_IS_HLINKED(file))
1554 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1556 if (remove_source_files == 1)
1557 goto return_with_success;
1562 if (!S_ISREG(file->mode)) {
1564 fname = f_name(file, NULL);
1565 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1569 if (max_size > 0 && F_LENGTH(file) > max_size) {
1570 if (INFO_GTE(SKIP, 1)) {
1572 fname = f_name(file, NULL);
1573 rprintf(FINFO, "%s is over max-size\n", fname);
1577 if (min_size > 0 && F_LENGTH(file) < min_size) {
1578 if (INFO_GTE(SKIP, 1)) {
1580 fname = f_name(file, NULL);
1581 rprintf(FINFO, "%s is under min-size\n", fname);
1586 if (update_only > 0 && statret == 0
1587 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1588 if (INFO_GTE(SKIP, 1))
1589 rprintf(FINFO, "%s is newer\n", fname);
1590 #ifdef SUPPORT_HARD_LINKS
1591 if (F_IS_HLINKED(file))
1592 handle_skipped_hlink(file, itemizing, code, f_out);
1597 fnamecmp_type = FNAMECMP_FNAME;
1599 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1600 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1603 stat_errno = ENOENT;
1606 if (statret != 0 && basis_dir[0] != NULL) {
1607 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1610 if (remove_source_files == 1)
1611 goto return_with_success;
1615 fnamecmp = fnamecmpbuf;
1624 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1625 && link_stat(partialptr, &partial_st, 0) == 0
1626 && S_ISREG(partial_st.st_mode)) {
1628 goto prepare_to_open;
1632 if (statret != 0 && fuzzy_dirlist) {
1633 int j = find_fuzzy(file, fuzzy_dirlist);
1635 fuzzy_file = fuzzy_dirlist->files[j];
1636 f_name(fuzzy_file, fnamecmpbuf);
1637 if (DEBUG_GTE(FUZZY, 1)) {
1638 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1639 fname, fnamecmpbuf);
1641 sx.st.st_size = F_LENGTH(fuzzy_file);
1643 fnamecmp = fnamecmpbuf;
1644 fnamecmp_type = FNAMECMP_FUZZY;
1649 #ifdef SUPPORT_HARD_LINKS
1650 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1651 cur_flist->in_progress++;
1655 if (stat_errno == ENOENT)
1657 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1662 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1664 else if (fnamecmp_type == FNAMECMP_FUZZY)
1666 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1668 do_unlink(partialptr);
1669 handle_partial_dir(partialptr, PDIR_DELETE);
1671 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1673 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1674 #ifdef SUPPORT_HARD_LINKS
1675 if (preserve_hard_links && F_IS_HLINKED(file))
1676 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1678 if (remove_source_files != 1)
1680 return_with_success:
1682 send_msg_int(MSG_SUCCESS, ndx);
1686 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1687 #ifdef SUPPORT_HARD_LINKS
1688 if (F_IS_HLINKED(file))
1689 handle_skipped_hlink(file, itemizing, code, f_out);
1697 fnamecmp = partialptr;
1698 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1705 if (read_batch || whole_file) {
1706 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1707 if (!(backupptr = get_backup_name(fname)))
1709 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1710 goto pretend_missing;
1711 if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1712 unmake_file(back_file);
1720 if (fuzzy_dirlist) {
1721 int j = flist_find(fuzzy_dirlist, file);
1722 if (j >= 0) /* don't use changing file as future fuzzy basis */
1723 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1727 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1728 rsyserr(FERROR, errno, "failed to open %s, continuing",
1729 full_fname(fnamecmp));
1731 /* pretend the file didn't exist */
1732 #ifdef SUPPORT_HARD_LINKS
1733 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1734 cur_flist->in_progress++;
1738 statret = real_ret = -1;
1742 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1743 if (!(backupptr = get_backup_name(fname))) {
1747 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1749 goto pretend_missing;
1751 if (robust_unlink(backupptr) && errno != ENOENT) {
1752 rsyserr(FERROR_XFER, errno, "unlink %s",
1753 full_fname(backupptr));
1754 unmake_file(back_file);
1759 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1760 rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1761 unmake_file(back_file);
1766 fnamecmp_type = FNAMECMP_BACKUP;
1769 if (DEBUG_GTE(DELTASUM, 3)) {
1770 rprintf(FINFO, "gen mapped %s of size %s\n",
1771 fnamecmp, big_num(sx.st.st_size));
1774 if (DEBUG_GTE(DELTASUM, 2))
1775 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1778 if (remove_source_files && !delay_updates && !phase && !dry_run)
1779 increment_active_files(ndx, itemizing, code);
1780 if (inc_recurse && !dry_run)
1781 cur_flist->in_progress++;
1782 #ifdef SUPPORT_HARD_LINKS
1783 if (preserve_hard_links && F_IS_HLINKED(file))
1784 file->flags |= FLAG_FILE_SENT;
1786 write_ndx(f_out, ndx);
1788 int iflags = ITEM_TRANSFER;
1789 if (always_checksum > 0)
1790 iflags |= ITEM_REPORT_CHANGE;
1791 if (fnamecmp_type != FNAMECMP_FNAME)
1792 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1793 if (fnamecmp_type == FNAMECMP_FUZZY)
1794 iflags |= ITEM_XNAME_FOLLOWS;
1795 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1796 fuzzy_file ? fuzzy_file->basename : NULL);
1801 #ifdef SUPPORT_XATTRS
1802 if (preserve_xattrs)
1803 free_xattr(&real_sx);
1808 #ifdef SUPPORT_HARD_LINKS
1809 if (preserve_hard_links && F_IS_HLINKED(file))
1810 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1817 if (statret != 0 || whole_file)
1818 write_sum_head(f_out, NULL);
1819 else if (sx.st.st_size <= 0) {
1820 write_sum_head(f_out, NULL);
1823 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1825 "WARNING: file is too large for checksum sending: %s\n",
1827 write_sum_head(f_out, NULL);
1834 int save_preserve_xattrs = preserve_xattrs;
1837 #ifdef SUPPORT_XATTRS
1838 if (preserve_xattrs) {
1839 copy_xattrs(fname, backupptr);
1840 preserve_xattrs = 0;
1843 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1844 preserve_xattrs = save_preserve_xattrs;
1845 if (INFO_GTE(BACKUP, 1)) {
1846 rprintf(FINFO, "backed up %s to %s\n",
1849 unmake_file(back_file);
1856 #ifdef SUPPORT_XATTRS
1857 if (preserve_xattrs)
1863 /* If we are replacing an existing hard link, symlink, device, or special file,
1864 * create a temp-name item and rename it into place. Only a symlink or hard
1865 * link puts a non-NULL value into the lnk arg. Only a device puts a non-0
1866 * value into the rdev arg. Specify 0 for the del_for_flag if there is not a
1867 * file to replace. This returns 1 on success and 0 on failure. */
1868 int atomic_create(struct file_struct *file, char *fname, const char *lnk,
1869 dev_t rdev, stat_x *sxp, int del_for_flag)
1871 char tmpname[MAXPATHLEN];
1872 const char *create_name;
1873 int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1875 if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1881 if (make_backups > 0 && !dir_in_the_way) {
1882 if (!make_backup(fname, skip_atomic))
1884 } else if (skip_atomic) {
1885 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1886 if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1891 create_name = skip_atomic ? fname : tmpname;
1894 #ifdef SUPPORT_LINKS
1895 if (S_ISLNK(file->mode)
1896 #ifdef SUPPORT_HARD_LINKS /* The first symlink in a hard-linked cluster is always created. */
1897 && (!F_IS_HLINKED(file) || file->flags & FLAG_HLINK_FIRST)
1900 if (do_symlink(lnk, create_name) < 0) {
1901 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1902 full_fname(create_name), lnk);
1907 #ifdef SUPPORT_HARD_LINKS
1908 if (!hard_link_one(file, create_name, lnk, 0))
1912 if (do_mknod(create_name, file->mode, rdev) < 0) {
1913 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1914 full_fname(create_name));
1920 if (do_rename(tmpname, fname) < 0) {
1921 rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
1922 full_fname(tmpname), full_fname(fname));
1931 #ifdef SUPPORT_HARD_LINKS
1932 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
1933 enum logcode code, int f_out)
1935 char fbuf[MAXPATHLEN];
1937 struct file_list *save_flist = cur_flist;
1939 /* If we skip the last item in a chain of links and there was a
1940 * prior non-skipped hard-link waiting to finish, finish it now. */
1941 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
1944 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
1945 cur_flist->in_progress--; /* undo prior increment */
1947 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
1949 cur_flist = save_flist;
1953 static void touch_up_dirs(struct file_list *flist, int ndx)
1955 static int counter = 0;
1956 struct file_struct *file;
1963 end = flist->used - 1;
1967 /* Fix any directory permissions that were modified during the
1968 * transfer and/or re-set any tweaked modified-time values. */
1969 for (i = start; i <= end; i++, counter++) {
1970 file = flist->files[i];
1971 if (!S_ISDIR(file->mode)
1972 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1974 if (DEBUG_GTE(TIME, 2)) {
1975 fname = f_name(file, NULL);
1976 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
1979 /* Be sure not to retouch permissions with --fake-super. */
1980 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
1981 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
1982 || !(need_retouch_dir_times || fix_dir_perms))
1984 fname = f_name(file, NULL);
1986 do_chmod(fname, file->mode);
1987 if (need_retouch_dir_times) {
1989 if (link_stat(fname, &st, 0) == 0
1990 && cmp_time(st.st_mtime, file->modtime) != 0)
1991 set_modtime(fname, file->modtime, F_MOD_NSEC(file), file->mode);
1993 if (counter >= loopchk_limit) {
1995 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
1997 maybe_flush_socket(0);
2003 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2005 struct file_struct *file;
2006 struct file_list *flist;
2007 char fbuf[MAXPATHLEN];
2011 #ifdef SUPPORT_HARD_LINKS
2012 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2013 int send_failed = (ndx == -2);
2015 ndx = get_hlink_num();
2016 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2017 file = flist->files[ndx - flist->ndx_start];
2018 assert(file->flags & FLAG_HLINKED);
2020 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2022 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2023 flist->in_progress--;
2028 if (check_redo && (ndx = get_redo_num()) != -1) {
2029 csum_length = SUM_LENGTH;
2030 max_size = -max_size;
2031 min_size = -min_size;
2032 ignore_existing = -ignore_existing;
2033 ignore_non_existing = -ignore_non_existing;
2034 update_only = -update_only;
2035 always_checksum = -always_checksum;
2036 size_only = -size_only;
2037 append_mode = -append_mode;
2038 make_backups = -make_backups; /* avoid dup backup w/inplace */
2042 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2044 file = cur_flist->files[ndx - cur_flist->ndx_start];
2046 strlcpy(fbuf, solo_file, sizeof fbuf);
2049 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2050 cur_flist->to_redo--;
2054 csum_length = SHORT_SUM_LENGTH;
2055 max_size = -max_size;
2056 min_size = -min_size;
2057 ignore_existing = -ignore_existing;
2058 ignore_non_existing = -ignore_non_existing;
2059 update_only = -update_only;
2060 always_checksum = -always_checksum;
2061 size_only = -size_only;
2062 append_mode = -append_mode;
2063 make_backups = -make_backups;
2068 if (cur_flist == first_flist)
2071 /* We only get here if inc_recurse is enabled. */
2072 if (first_flist->in_progress || first_flist->to_redo)
2075 write_ndx(sock_f_out, NDX_DONE);
2076 if (!read_batch && !flist_eof) {
2078 for (flist = first_flist; flist != cur_flist; flist = flist->next)
2079 old_total += flist->used;
2080 maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2083 if (delete_during == 2 || !dir_tweaking) {
2084 /* Skip directory touch-up. */
2085 } else if (first_flist->parent_ndx >= 0)
2086 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2088 flist_free(first_flist); /* updates first_flist */
2092 void generate_files(int f_out, const char *local_name)
2094 int i, ndx, next_loopchk = 0;
2095 char fbuf[MAXPATHLEN];
2098 int save_info_flist = info_levels[INFO_FLIST];
2099 int save_info_progress = info_levels[INFO_PROGRESS];
2101 if (protocol_version >= 29) {
2103 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2104 code = logfile_format_has_i ? FNONE : FLOG;
2105 } else if (am_daemon) {
2106 itemizing = logfile_format_has_i && do_xfers;
2107 maybe_ATTRS_REPORT = ATTRS_REPORT;
2108 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2109 } else if (!am_server) {
2110 itemizing = stdout_format_has_i;
2111 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2112 code = itemizing ? FNONE : FINFO;
2115 maybe_ATTRS_REPORT = ATTRS_REPORT;
2118 solo_file = local_name;
2119 dir_tweaking = !(list_only || solo_file || dry_run);
2120 need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2121 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2122 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2123 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2124 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2126 if (DEBUG_GTE(GENR, 1))
2127 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2129 if (delete_before && !solo_file && cur_flist->used > 0)
2131 if (delete_during == 2) {
2132 deldelay_size = BIGPATHBUFLEN * 4;
2133 deldelay_buf = new_array(char, deldelay_size);
2135 out_of_memory("delete-delay");
2137 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2139 if (append_mode > 0 || whole_file < 0)
2141 if (DEBUG_GTE(FLIST, 1)) {
2142 rprintf(FINFO, "delta-transmission %s\n",
2144 ? "disabled for local transfer or --whole-file"
2148 dflt_perms = (ACCESSPERMS & ~orig_umask);
2151 #ifdef SUPPORT_HARD_LINKS
2152 if (preserve_hard_links && inc_recurse) {
2153 while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2154 wait_for_receiver();
2158 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2159 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2161 strlcpy(fbuf, solo_file, sizeof fbuf);
2164 ndx = cur_flist->ndx_start - 1;
2165 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2166 if (delete_during && dry_run < 2 && !list_only
2167 && !(fp->flags & FLAG_MISSING_DIR)) {
2168 if (fp->flags & FLAG_CONTENT_DIR) {
2170 if (one_file_system) {
2171 uint32 *devp = F_DIR_DEV_P(fp);
2172 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2174 dirdev = MAKEDEV(0, 0);
2175 delete_in_dir(fbuf, fp, &dirdev);
2177 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2180 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2181 struct file_struct *file = cur_flist->sorted[i];
2183 if (!F_IS_ACTIVE(file))
2189 ndx = i + cur_flist->ndx_start;
2192 strlcpy(fbuf, solo_file, sizeof fbuf);
2195 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2197 check_for_finished_files(itemizing, code, 0);
2199 if (i + cur_flist->ndx_start >= next_loopchk) {
2201 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2203 maybe_flush_socket(0);
2204 next_loopchk += loopchk_limit;
2209 write_ndx(f_out, NDX_DONE);
2214 check_for_finished_files(itemizing, code, 1);
2215 if (cur_flist->next || flist_eof)
2217 wait_for_receiver();
2219 } while ((cur_flist = cur_flist->next) != NULL);
2222 delete_in_dir(NULL, NULL, &dev_zero);
2224 if (DEBUG_GTE(GENR, 1))
2225 rprintf(FINFO, "generate_files phase=%d\n", phase);
2228 check_for_finished_files(itemizing, code, 1);
2231 wait_for_receiver();
2235 if (DEBUG_GTE(GENR, 1))
2236 rprintf(FINFO, "generate_files phase=%d\n", phase);
2238 write_ndx(f_out, NDX_DONE);
2240 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2241 if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2242 write_ndx(f_out, NDX_DONE);
2244 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2245 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2246 write_del_stats(f_out);
2247 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2248 write_ndx(f_out, NDX_DONE);
2251 /* Read MSG_DONE for the redo phase (and any prior messages). */
2253 check_for_finished_files(itemizing, code, 0);
2254 if (msgdone_cnt > 1)
2256 wait_for_receiver();
2259 if (protocol_version >= 29) {
2261 if (DEBUG_GTE(GENR, 1))
2262 rprintf(FINFO, "generate_files phase=%d\n", phase);
2263 if (!EARLY_DELAY_DONE_MSG()) {
2264 write_ndx(f_out, NDX_DONE);
2265 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2266 write_ndx(f_out, NDX_DONE);
2268 /* Read MSG_DONE for delay-updates phase & prior messages. */
2269 while (msgdone_cnt == 2)
2270 wait_for_receiver();
2273 info_levels[INFO_FLIST] = save_info_flist;
2274 info_levels[INFO_PROGRESS] = save_info_progress;
2276 if (delete_during == 2)
2277 do_delayed_deletions(fbuf);
2278 if (delete_after && !solo_file && file_total > 0)
2281 if (max_delete >= 0 && skipped_deletes) {
2283 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2285 io_error |= IOERR_DEL_LIMIT;
2288 if (protocol_version >= 31) {
2289 if (!EARLY_DELETE_DONE_MSG()) {
2290 if (INFO_GTE(STATS, 2) || read_batch)
2291 write_del_stats(f_out);
2292 write_ndx(f_out, NDX_DONE);
2295 /* Read MSG_DONE for late-delete phase & prior messages. */
2296 while (msgdone_cnt == 3)
2297 wait_for_receiver();
2300 if ((need_retouch_dir_perms || need_retouch_dir_times)
2301 && dir_tweaking && (!inc_recurse || delete_during == 2))
2302 touch_up_dirs(dir_flist, -1);
2304 if (DEBUG_GTE(GENR, 1))
2305 rprintf(FINFO, "generate_files finished\n");