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) 2003-2015 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;
60 extern int want_xattr_optim;
62 extern int append_mode;
63 extern int make_backups;
64 extern int csum_length;
65 extern int ignore_times;
67 extern OFF_T max_size;
68 extern OFF_T min_size;
71 extern int allowed_lull;
72 extern int sock_f_out;
73 extern int protocol_version;
74 extern int file_total;
75 extern int fuzzy_basis;
76 extern int always_checksum;
77 extern int checksum_len;
78 extern char *partial_dir;
79 extern int compare_dest;
82 extern int whole_file;
84 extern int read_batch;
85 extern int write_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];
283 change_local_filter_dir(NULL, 0, 0);
287 if (DEBUG_GTE(DEL, 2))
288 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
291 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
293 if (io_error & IOERR_GENERAL && !ignore_errors) {
297 "IO error encountered -- skipping file deletion\n");
303 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
305 if (one_file_system) {
306 if (file->flags & FLAG_TOP_DIR)
307 filesystem_dev = *fs_dev;
308 else if (filesystem_dev != *fs_dev)
312 dirlist = get_dirlist(fbuf, dlen, 0);
314 /* If an item in dirlist is not found in flist, delete it
315 * from the filesystem. */
316 for (i = dirlist->used; i--; ) {
317 struct file_struct *fp = dirlist->files[i];
318 if (!F_IS_ACTIVE(fp))
320 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
321 if (INFO_GTE(MOUNT, 1))
322 rprintf(FINFO, "cannot delete mount point: %s\n",
326 /* Here we want to match regardless of file type. Replacement
327 * of a file with one of another type is handled separately by
328 * a delete_item call with a DEL_MAKE_ROOM flag. */
329 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
330 int flags = DEL_RECURSE;
331 if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
332 flags |= DEL_NO_UID_WRITE;
334 if (delete_during == 2) {
335 if (!remember_delete(fp, delbuf, flags))
338 delete_item(delbuf, fp->mode, flags);
345 /* This deletes any files on the receiving side that are not present on the
346 * sending side. This is used by --delete-before and --delete-after. */
347 static void do_delete_pass(void)
349 char fbuf[MAXPATHLEN];
353 /* dry_run is incremented when the destination doesn't exist yet. */
354 if (dry_run > 1 || list_only)
357 for (j = 0; j < cur_flist->used; j++) {
358 struct file_struct *file = cur_flist->sorted[j];
360 if (!F_IS_ACTIVE(file))
365 if (!(file->flags & FLAG_CONTENT_DIR)) {
366 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
370 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
371 rprintf(FINFO, "deleting in %s\n", fbuf);
373 if (link_stat(fbuf, &st, keep_dirlinks) < 0
374 || !S_ISDIR(st.st_mode))
377 delete_in_dir(fbuf, file, &st.st_dev);
379 delete_in_dir(NULL, NULL, &dev_zero);
381 if (INFO_GTE(FLIST, 2) && !am_server)
382 rprintf(FINFO, " \r");
385 static inline int time_differs(struct file_struct *file, stat_x *sxp)
387 return cmp_time(sxp->st.st_mtime, file->modtime);
390 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
393 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
395 if (preserve_executability)
396 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
401 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
403 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
406 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
413 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
416 if (!ACL_READY(*sxp))
418 if (set_acl(NULL, file, sxp, file->mode))
426 #ifdef SUPPORT_XATTRS
427 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
429 if (preserve_xattrs) {
430 if (!XATTR_READY(*sxp))
431 get_xattr(fname, sxp);
432 if (xattr_diff(file, sxp, 0))
440 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
442 if (S_ISLNK(file->mode)) {
443 #ifdef CAN_SET_SYMLINK_TIMES
444 if (preserve_times & PRESERVE_LINK_TIMES && time_differs(file, sxp))
447 #ifdef CAN_CHMOD_SYMLINK
448 if (perms_differ(file, sxp))
451 #ifdef CAN_CHOWN_SYMLINK
452 if (ownership_differs(file, sxp))
455 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
456 if (acls_differ(fname, file, sxp))
459 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
460 if (xattrs_differ(fname, file, sxp))
464 if (preserve_times && time_differs(file, sxp))
466 if (perms_differ(file, sxp))
468 if (ownership_differs(file, sxp))
471 if (acls_differ(fname, file, sxp))
474 #ifdef SUPPORT_XATTRS
475 if (xattrs_differ(fname, file, sxp))
483 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
484 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
487 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
488 int keep_time = !preserve_times ? 0
489 : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
490 : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
493 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
494 iflags |= ITEM_REPORT_SIZE;
495 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
496 if (iflags & ITEM_LOCAL_CHANGE)
497 iflags |= symlink_timeset_failed_flags;
499 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
500 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
501 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
502 iflags |= ITEM_REPORT_TIME;
503 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
504 if (S_ISLNK(file->mode)) {
508 if (preserve_perms) {
509 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
510 iflags |= ITEM_REPORT_PERMS;
511 } else if (preserve_executability
512 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
513 iflags |= ITEM_REPORT_PERMS;
514 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
515 iflags |= ITEM_REPORT_OWNER;
516 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
517 && sxp->st.st_gid != (gid_t)F_GROUP(file))
518 iflags |= ITEM_REPORT_GROUP;
520 if (preserve_acls && !S_ISLNK(file->mode)) {
521 if (!ACL_READY(*sxp))
522 get_acl(fnamecmp, sxp);
523 if (set_acl(NULL, file, sxp, file->mode))
524 iflags |= ITEM_REPORT_ACL;
527 #ifdef SUPPORT_XATTRS
528 if (preserve_xattrs) {
529 if (!XATTR_READY(*sxp))
530 get_xattr(fnamecmp, sxp);
531 if (xattr_diff(file, sxp, 1))
532 iflags |= ITEM_REPORT_XATTR;
536 #ifdef SUPPORT_XATTRS
537 if (preserve_xattrs && xattr_diff(file, NULL, 1))
538 iflags |= ITEM_REPORT_XATTR;
540 iflags |= ITEM_IS_NEW;
544 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
545 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
546 if (protocol_version >= 29) {
548 write_ndx(sock_f_out, ndx);
549 write_shortint(sock_f_out, iflags);
550 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
551 write_byte(sock_f_out, fnamecmp_type);
552 if (iflags & ITEM_XNAME_FOLLOWS)
553 write_vstring(sock_f_out, xname, strlen(xname));
554 #ifdef SUPPORT_XATTRS
555 if (preserve_xattrs && do_xfers
556 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
557 int fd = iflags & ITEM_REPORT_XATTR
558 && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
560 send_xattr_request(NULL, file, fd);
563 } else if (ndx >= 0) {
564 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
565 log_item(code, file, iflags, xname);
571 /* Perform our quick-check heuristic for determining if a file is unchanged. */
572 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
574 if (st->st_size != F_LENGTH(file))
577 /* if always checksum is set then we use the checksum instead
578 of the file time to determine whether to sync */
579 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
580 char sum[MAX_DIGEST_LEN];
581 file_checksum(fn, st, sum);
582 return memcmp(sum, F_SUM(file), checksum_len) == 0;
591 return cmp_time(st->st_mtime, file->modtime) == 0;
596 * set (initialize) the size entries in the per-file sum_struct
597 * calculating dynamic block and checksum sizes.
599 * This is only called from generate_and_send_sums() but is a separate
600 * function to encapsulate the logic.
602 * The block size is a rounded square root of file length.
604 * The checksum size is determined according to:
605 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
606 * provided by Donovan Baarda which gives a probability of rsync
607 * algorithm corrupting data and falling back using the whole md4
610 * This might be made one of several selectable heuristics.
612 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
619 /* The file length overflowed our int64 var, so we can't process this file. */
620 sum->count = -1; /* indicate overflow error */
625 blength = block_size;
626 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
627 blength = BLOCK_SIZE;
629 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
632 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
633 if (c < 0 || c >= max_blength)
634 blength = max_blength;
639 if (len < (int64)blength * blength)
642 } while (c >= 8); /* round to multiple of 8 */
643 blength = MAX(blength, BLOCK_SIZE);
647 if (protocol_version < 27) {
648 s2length = csum_length;
649 } else if (csum_length == SUM_LENGTH) {
650 s2length = SUM_LENGTH;
653 int b = BLOCKSUM_BIAS;
654 for (l = len; l >>= 1; b += 2) {}
655 for (c = blength; (c >>= 1) && b; b--) {}
656 /* add a bit, subtract rollsum, round up. */
657 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
658 s2length = MAX(s2length, csum_length);
659 s2length = MIN(s2length, SUM_LENGTH);
663 sum->blength = blength;
664 sum->s2length = s2length;
665 sum->remainder = (int32)(len % blength);
666 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
668 if ((int64)sum->count != l)
671 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
673 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
674 big_num(sum->count), (long)sum->remainder, (long)sum->blength,
675 sum->s2length, big_num(sum->flength));
681 * Generate and send a stream of signatures/checksums that describe a buffer
683 * Generate approximately one checksum every block_len bytes.
685 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
688 struct map_struct *mapbuf;
689 struct sum_struct sum;
692 sum_sizes_sqroot(&sum, len);
695 write_sum_head(f_out, &sum);
697 if (append_mode > 0 && f_copy < 0)
701 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
705 for (i = 0; i < sum.count; i++) {
706 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
707 char *map = map_ptr(mapbuf, offset, n1);
708 char sum2[SUM_LENGTH];
715 full_write(f_copy, map, n1);
720 sum1 = get_checksum1(map, n1);
721 get_checksum2(map, n1, sum2);
723 if (DEBUG_GTE(DELTASUM, 3)) {
725 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
726 big_num(i), big_num(offset - n1), (long)n1,
727 (unsigned long)sum1);
729 write_int(f_out, sum1);
730 write_buf(f_out, sum2, sum.s2length);
740 /* Try to find a filename in the same dir as "fname" with a similar name. */
741 static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
743 int fname_len, fname_suf_len;
744 const char *fname_suf, *fname = file->basename;
745 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
747 struct file_struct *lowest_fp = NULL;
749 fname_len = strlen(fname);
750 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
752 /* Try to find an exact size+mtime match first. */
753 for (i = 0; i < fuzzy_basis; i++) {
754 struct file_list *dirlist = dirlist_array[i];
759 for (j = 0; j < dirlist->used; j++) {
760 struct file_struct *fp = dirlist->files[j];
762 if (!F_IS_ACTIVE(fp))
765 if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
768 if (F_LENGTH(fp) == F_LENGTH(file) && cmp_time(fp->modtime, file->modtime) == 0) {
769 if (DEBUG_GTE(FUZZY, 2))
770 rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
771 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
778 for (i = 0; i < fuzzy_basis; i++) {
779 struct file_list *dirlist = dirlist_array[i];
784 for (j = 0; j < dirlist->used; j++) {
785 struct file_struct *fp = dirlist->files[j];
786 const char *suf, *name;
790 if (!F_IS_ACTIVE(fp))
793 if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
798 suf = find_filename_suffix(name, len, &suf_len);
800 dist = fuzzy_distance(name, len, fname, fname_len);
801 /* Add some extra weight to how well the suffixes match. */
802 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
803 if (DEBUG_GTE(FUZZY, 2)) {
804 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
805 f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
807 if (dist <= lowest_dist) {
810 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
818 /* Copy a file found in our --copy-dest handling. */
819 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
821 char buf[MAXPATHLEN];
822 const char *copy_to, *partialptr;
823 int save_preserve_xattrs = preserve_xattrs;
827 /* Let copy_file open the destination in place. */
831 fd_w = open_tmpfile(buf, dest, file);
836 cleanup_set(copy_to, NULL, NULL, -1, -1);
837 if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
838 if (INFO_GTE(COPY, 1)) {
839 rsyserr(FINFO, errno, "copy_file %s => %s",
840 full_fname(src), copy_to);
842 /* Try to clean up. */
847 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
848 preserve_xattrs = 0; /* xattrs were copied with file */
849 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
850 preserve_xattrs = save_preserve_xattrs;
855 /* This is only called for regular files. We return -2 if we've finished
856 * handling the file, -1 if no dest-linking occurred, or a non-negative
857 * value if we found an alternate basis file. If we're called with the
858 * find_exact_for_existing flag, the destination file already exists, so
859 * we only try to find an exact alt-dest match. In this case, the returns
860 * are only -2 & -1 (both as above). */
861 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
862 char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
863 int itemizing, enum logcode code)
865 STRUCT_STAT real_st = sxp->st;
871 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
872 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
874 switch (match_level) {
880 if (!unchanged_file(cmpbuf, file, &sxp->st))
886 if (!unchanged_attrs(cmpbuf, file, sxp)) {
895 } while (basis_dir[++j] != NULL);
900 if (j != best_match) {
902 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
903 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
907 if (match_level == 3 && !copy_dest) {
908 if (find_exact_for_existing) {
909 if (link_dest && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
911 if (do_unlink(fname) < 0 && errno != ENOENT) {
916 #ifdef SUPPORT_HARD_LINKS
918 if (!hard_link_one(file, fname, cmpbuf, 1))
920 if (preserve_hard_links && F_IS_HLINKED(file))
921 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
922 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
923 itemize(cmpbuf, file, ndx, 1, sxp,
924 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
931 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
933 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
934 rprintf(FCLIENT, "%s is uptodate\n", fname);
938 if (find_exact_for_existing) {
943 if (match_level >= 2) {
944 #ifdef SUPPORT_HARD_LINKS
945 try_a_copy: /* Copy the file locally. */
947 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
948 if (find_exact_for_existing) /* Can get here via hard-link failure */
953 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
954 if (maybe_ATTRS_REPORT
955 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
956 || (INFO_GTE(NAME, 2) && match_level == 3))) {
957 code = match_level == 3 ? FCLIENT : FINFO;
958 rprintf(code, "%s%s\n", fname,
959 match_level == 3 ? " is uptodate" : "");
961 #ifdef SUPPORT_HARD_LINKS
962 if (preserve_hard_links && F_IS_HLINKED(file))
963 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
968 return FNAMECMP_BASIS_DIR_LOW + j;
971 /* This is only called for non-regular files. We return -2 if we've finished
972 * handling the file, or -1 if no dest-linking occurred, or a non-negative
973 * value if we found an alternate basis file. */
974 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
975 char *cmpbuf, stat_x *sxp, int itemizing,
980 enum nonregtype type;
983 char lnk[MAXPATHLEN];
988 #ifndef SUPPORT_LINKS
989 if (S_ISLNK(file->mode))
992 if (S_ISDIR(file->mode)) {
994 } else if (IS_SPECIAL(file->mode))
996 else if (IS_DEVICE(file->mode))
999 else if (S_ISLNK(file->mode))
1000 type = TYPE_SYMLINK;
1004 "internal: try_dests_non() called with invalid mode (%o)\n",
1006 exit_cleanup(RERR_UNSUPPORTED);
1010 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1011 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1015 if (!S_ISDIR(sxp->st.st_mode))
1019 if (!IS_SPECIAL(sxp->st.st_mode))
1023 if (!IS_DEVICE(sxp->st.st_mode))
1027 #ifdef SUPPORT_LINKS
1028 if (!S_ISLNK(sxp->st.st_mode))
1035 if (match_level < 1) {
1044 devp = F_RDEV_P(file);
1045 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1049 #ifdef SUPPORT_LINKS
1050 if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1053 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1060 if (match_level < 2) {
1064 if (unchanged_attrs(cmpbuf, file, sxp)) {
1069 } while (basis_dir[++j] != NULL);
1074 if (j != best_match) {
1076 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1077 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1081 if (match_level == 3) {
1082 #ifdef SUPPORT_HARD_LINKS
1084 #ifndef CAN_HARDLINK_SYMLINK
1085 && !S_ISLNK(file->mode)
1087 #ifndef CAN_HARDLINK_SPECIAL
1088 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1090 && !S_ISDIR(file->mode)) {
1091 if (do_link(cmpbuf, fname) < 0) {
1092 rsyserr(FERROR_XFER, errno,
1093 "failed to hard-link %s with %s",
1097 if (preserve_hard_links && F_IS_HLINKED(file))
1098 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1102 if (itemizing && stdout_format_has_i
1103 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1104 int chg = compare_dest && type != TYPE_DIR ? 0
1105 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1106 char *lp = match_level == 3 ? "" : NULL;
1107 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1109 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1110 rprintf(FCLIENT, "%s%s is uptodate\n",
1111 fname, type == TYPE_DIR ? "/" : "");
1119 static void list_file_entry(struct file_struct *f)
1121 char permbuf[PERMSTRING_SIZE];
1123 int colwidth = human_readable ? 14 : 11;
1125 if (!F_IS_ACTIVE(f)) {
1126 /* this can happen if duplicate names were removed */
1130 permstring(permbuf, f->mode);
1133 /* TODO: indicate '+' if the entry has an ACL. */
1135 #ifdef SUPPORT_LINKS
1136 if (preserve_links && S_ISLNK(f->mode)) {
1137 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1138 permbuf, colwidth, human_num(len),
1139 timestring(f->modtime), f_name(f, NULL),
1143 if (missing_args == 2 && f->mode == 0) {
1144 rprintf(FINFO, "%-*s %s\n",
1145 colwidth + 31, "*missing",
1148 rprintf(FINFO, "%s %*s %s %s\n",
1149 permbuf, colwidth, human_num(len),
1150 timestring(f->modtime), f_name(f, NULL));
1154 static int phase = 0;
1155 static int dflt_perms;
1157 static int implied_dirs_are_missing;
1158 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1159 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1161 return F_DEPTH(file) > F_DEPTH(subtree)
1162 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1165 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1166 * make sure it exists, and has the right permissions/timestamp info. For
1167 * all other non-regular files (symlinks, etc.) we create them here. For
1168 * regular files that have changed, we try to find a basis file and then
1169 * start sending checksums. The ndx is the file's unique index value.
1171 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1172 * passed to delete_item(), which can use it during a recursive delete.)
1174 * Note that f_out is set to -1 when doing final directory-permission and
1175 * modification-time repair. */
1176 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1177 int itemizing, enum logcode code, int f_out)
1179 static const char *parent_dirname = "";
1180 static struct file_struct *prior_dir_file = NULL;
1181 /* Missing dir not created due to --dry-run; will still be scanned. */
1182 static struct file_struct *dry_missing_dir = NULL;
1183 /* Missing dir whose contents are skipped altogether due to
1184 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1185 static struct file_struct *skip_dir = NULL;
1186 static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
1187 static int need_fuzzy_dirlist = 0;
1188 struct file_struct *fuzzy_file = NULL;
1189 int fd = -1, f_copy = -1;
1191 STRUCT_STAT partial_st;
1192 struct file_struct *back_file = NULL;
1193 int statret, real_ret, stat_errno;
1194 char *fnamecmp, *partialptr, *backupptr = NULL;
1195 char fnamecmpbuf[MAXPATHLEN];
1196 uchar fnamecmp_type;
1197 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1198 int is_dir = !S_ISDIR(file->mode) ? 0
1199 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1202 if (DEBUG_GTE(GENR, 1))
1203 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1207 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1209 list_file_entry(file);
1214 if (is_below(file, skip_dir)) {
1216 file->flags |= FLAG_MISSING_DIR;
1217 #ifdef SUPPORT_HARD_LINKS
1218 else if (F_IS_HLINKED(file))
1219 handle_skipped_hlink(file, itemizing, code, f_out);
1227 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1228 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1231 #ifdef SUPPORT_HARD_LINKS
1232 if (F_IS_HLINKED(file))
1233 handle_skipped_hlink(file, itemizing, code, f_out);
1235 rprintf(FERROR_XFER,
1236 "ERROR: daemon refused to receive %s \"%s\"\n",
1237 is_dir ? "directory" : "file", fname);
1239 goto skipping_dir_contents;
1244 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1246 parent_is_dry_missing:
1247 for (i = 0; i < fuzzy_basis; i++) {
1248 if (fuzzy_dirlist[i]) {
1249 flist_free(fuzzy_dirlist[i]);
1250 fuzzy_dirlist[i] = NULL;
1253 parent_dirname = "";
1255 stat_errno = ENOENT;
1257 const char *dn = file->dirname ? file->dirname : ".";
1258 dry_missing_dir = NULL;
1259 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1260 /* Each parent dir must be in the file list or the flist data is bad.
1261 * Optimization: most of the time the parent dir will be the last dir
1262 * this function was asked to process in the file list. */
1264 && (*dn != '.' || dn[1]) /* Avoid an issue with --relative and the "." dir. */
1265 && (prior_dir_file && strcmp(dn, f_name(prior_dir_file, NULL)) != 0)
1266 && flist_find_name(cur_flist, dn, 1) < 0) {
1268 "ABORTING due to invalid path from sender: %s/%s\n",
1269 dn, file->basename);
1270 exit_cleanup(RERR_PROTOCOL);
1272 if (relative_paths && !implied_dirs
1273 && do_stat(dn, &sx.st) < 0) {
1275 goto parent_is_dry_missing;
1276 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1277 rsyserr(FERROR_XFER, errno,
1278 "recv_generator: mkdir %s failed",
1284 for (i = 0; i < fuzzy_basis; i++) {
1285 if (fuzzy_dirlist[i]) {
1286 flist_free(fuzzy_dirlist[i]);
1287 fuzzy_dirlist[i] = NULL;
1290 need_fuzzy_dirlist = 1;
1293 if (!preserve_perms)
1294 dflt_perms = default_perms_for_dir(dn);
1297 parent_dirname = dn;
1299 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1301 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1302 for (i = 0; i < fuzzy_basis; i++) {
1303 if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
1305 fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES);
1306 if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
1307 flist_free(fuzzy_dirlist[i]);
1308 fuzzy_dirlist[i] = NULL;
1311 need_fuzzy_dirlist = 0;
1314 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1318 if (missing_args == 2 && file->mode == 0) {
1319 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1322 delete_item(fname, sx.st.st_mode, del_opts);
1326 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1331 file->flags |= FLAG_MISSING_DIR;
1333 #ifdef SUPPORT_HARD_LINKS
1334 else if (F_IS_HLINKED(file))
1335 handle_skipped_hlink(file, itemizing, code, f_out);
1337 if (INFO_GTE(SKIP, 1)) {
1338 rprintf(FINFO, "not creating new %s \"%s\"\n",
1339 is_dir ? "directory" : "file", fname);
1344 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1345 && !am_root && sx.st.st_uid == our_uid)
1346 del_opts |= DEL_NO_UID_WRITE;
1348 if (ignore_existing > 0 && statret == 0
1349 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1350 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1351 rprintf(FINFO, "%s exists\n", fname);
1352 #ifdef SUPPORT_HARD_LINKS
1353 if (F_IS_HLINKED(file))
1354 handle_skipped_hlink(file, itemizing, code, f_out);
1363 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1366 /* For --fake-super, the dir must be useable by the copying
1367 * user, just like it would be for root. */
1368 added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1372 if (!(preserve_times & PRESERVE_DIR_TIMES))
1374 /* In inc_recurse mode we want to make sure any missing
1375 * directories get created while we're still processing
1376 * the parent dir (which allows us to touch the parent
1377 * dir's mtime right away). We will handle the dir in
1378 * full later (right before we handle its contents). */
1380 && (S_ISDIR(sx.st.st_mode)
1381 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1382 goto cleanup; /* Any errors get reported later. */
1383 if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1384 file->flags |= FLAG_DIR_CREATED;
1387 /* The file to be received is a directory, so we need
1388 * to prepare appropriately. If there is already a
1389 * file of that name and it is *not* a directory, then
1390 * we need to delete it. If it doesn't exist, then
1391 * (perhaps recursively) create it. */
1392 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1393 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1394 goto skipping_dir_contents;
1397 if (dry_run && statret != 0) {
1398 if (!dry_missing_dir)
1399 dry_missing_dir = file;
1400 file->flags |= FLAG_MISSING_DIR;
1402 init_stat_x(&real_sx);
1405 if (file->flags & FLAG_DIR_CREATED)
1407 if (!preserve_perms) { /* See comment in non-dir code below. */
1408 file->mode = dest_mode(file->mode, sx.st.st_mode,
1409 dflt_perms, statret == 0);
1411 if (statret != 0 && basis_dir[0] != NULL) {
1412 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1418 } else if (j >= 0) {
1420 fnamecmp = fnamecmpbuf;
1423 if (itemizing && f_out != -1) {
1424 itemize(fnamecmp, file, ndx, statret, &sx,
1425 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1427 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1428 if (!relative_paths || errno != ENOENT
1429 || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1430 || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1431 rsyserr(FERROR_XFER, errno,
1432 "recv_generator: mkdir %s failed",
1434 skipping_dir_contents:
1436 "*** Skipping any contents from this failed directory ***\n");
1438 file->flags |= FLAG_MISSING_DIR;
1443 #ifdef SUPPORT_XATTRS
1444 if (preserve_xattrs && statret == 1)
1445 copy_xattrs(fnamecmpbuf, fname);
1447 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1448 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1449 rprintf(code, "%s/\n", fname);
1451 /* We need to ensure that the dirs in the transfer have both
1452 * readable and writable permissions during the time we are
1453 * putting files within them. This is then restored to the
1454 * former permissions after the transfer is done. */
1456 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1457 mode_t mode = file->mode | S_IRWXU;
1458 if (do_chmod(fname, mode) < 0) {
1459 rsyserr(FERROR_XFER, errno,
1460 "failed to modify permissions on %s",
1463 need_retouch_dir_perms = 1;
1467 if (real_ret != 0 && one_file_system)
1468 real_sx.st.st_dev = filesystem_dev;
1470 if (one_file_system) {
1471 uint32 *devp = F_DIR_DEV_P(file);
1472 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1473 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1476 else if (delete_during && f_out != -1 && !phase
1477 && !(file->flags & FLAG_MISSING_DIR)) {
1478 if (file->flags & FLAG_CONTENT_DIR)
1479 delete_in_dir(fname, file, &real_sx.st.st_dev);
1481 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1483 prior_dir_file = file;
1487 /* If we're not preserving permissions, change the file-list's
1488 * mode based on the local permissions and some heuristics. */
1489 if (!preserve_perms) {
1490 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1491 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1495 #ifdef SUPPORT_HARD_LINKS
1496 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1497 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1501 if (preserve_links && S_ISLNK(file->mode)) {
1502 #ifdef SUPPORT_LINKS
1503 const char *sl = F_SYMLINK(file);
1504 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1505 if (INFO_GTE(NAME, 1)) {
1507 /* fname contains the destination path, but we
1508 * want to report the source path. */
1509 fname = f_name(file, NULL);
1512 "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1518 char lnk[MAXPATHLEN];
1521 if (S_ISLNK(sx.st.st_mode)
1522 && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1523 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1524 /* The link is pointing to the right place. */
1525 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1527 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1528 #ifdef SUPPORT_HARD_LINKS
1529 if (preserve_hard_links && F_IS_HLINKED(file))
1530 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1532 if (remove_source_files == 1)
1533 goto return_with_success;
1536 } else if (basis_dir[0] != NULL) {
1537 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1540 #ifndef CAN_HARDLINK_SYMLINK
1542 /* Resort to --copy-dest behavior. */
1549 } else if (j >= 0) {
1551 fnamecmp = fnamecmpbuf;
1554 if (atomic_create(file, fname, sl, NULL, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1555 set_file_attrs(fname, file, NULL, NULL, 0);
1557 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1559 itemize(fnamecmp, file, ndx, statret, &sx,
1560 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1562 if (code != FNONE && INFO_GTE(NAME, 1))
1563 rprintf(code, "%s -> %s\n", fname, sl);
1564 #ifdef SUPPORT_HARD_LINKS
1565 if (preserve_hard_links && F_IS_HLINKED(file))
1566 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1568 /* This does not check remove_source_files == 1
1569 * because this is one of the items that the old
1570 * --remove-sent-files option would remove. */
1571 if (remove_source_files)
1572 goto return_with_success;
1578 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1579 || (preserve_specials && IS_SPECIAL(file->mode))) {
1581 int del_for_flag = 0;
1582 if (IS_DEVICE(file->mode)) {
1583 uint32 *devp = F_RDEV_P(file);
1584 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1588 if (IS_DEVICE(file->mode)) {
1589 if (!IS_DEVICE(sx.st.st_mode))
1591 del_for_flag = DEL_FOR_DEVICE;
1593 if (!IS_SPECIAL(sx.st.st_mode))
1595 del_for_flag = DEL_FOR_SPECIAL;
1598 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1599 && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1600 /* The device or special file is identical. */
1601 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1603 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1604 #ifdef SUPPORT_HARD_LINKS
1605 if (preserve_hard_links && F_IS_HLINKED(file))
1606 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1608 if (remove_source_files == 1)
1609 goto return_with_success;
1612 } else if (basis_dir[0] != NULL) {
1613 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1616 #ifndef CAN_HARDLINK_SPECIAL
1618 /* Resort to --copy-dest behavior. */
1625 } else if (j >= 0) {
1627 fnamecmp = fnamecmpbuf;
1630 if (DEBUG_GTE(GENR, 1)) {
1631 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1632 fname, (int)file->mode,
1633 (long)major(rdev), (long)minor(rdev));
1635 if (atomic_create(file, fname, NULL, NULL, rdev, &sx, del_for_flag)) {
1636 set_file_attrs(fname, file, NULL, NULL, 0);
1638 itemize(fnamecmp, file, ndx, statret, &sx,
1639 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1641 if (code != FNONE && INFO_GTE(NAME, 1))
1642 rprintf(code, "%s\n", fname);
1643 #ifdef SUPPORT_HARD_LINKS
1644 if (preserve_hard_links && F_IS_HLINKED(file))
1645 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1647 if (remove_source_files == 1)
1648 goto return_with_success;
1653 if (!S_ISREG(file->mode)) {
1655 fname = f_name(file, NULL);
1656 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1660 if (max_size >= 0 && F_LENGTH(file) > max_size) {
1661 if (INFO_GTE(SKIP, 1)) {
1663 fname = f_name(file, NULL);
1664 rprintf(FINFO, "%s is over max-size\n", fname);
1668 if (min_size >= 0 && F_LENGTH(file) < min_size) {
1669 if (INFO_GTE(SKIP, 1)) {
1671 fname = f_name(file, NULL);
1672 rprintf(FINFO, "%s is under min-size\n", fname);
1677 if (update_only > 0 && statret == 0
1678 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1679 if (INFO_GTE(SKIP, 1))
1680 rprintf(FINFO, "%s is newer\n", fname);
1681 #ifdef SUPPORT_HARD_LINKS
1682 if (F_IS_HLINKED(file))
1683 handle_skipped_hlink(file, itemizing, code, f_out);
1688 fnamecmp_type = FNAMECMP_FNAME;
1690 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1691 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1694 stat_errno = ENOENT;
1697 if (basis_dir[0] != NULL && (statret != 0 || !copy_dest)) {
1698 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1699 statret == 0, itemizing, code);
1701 if (remove_source_files == 1)
1702 goto return_with_success;
1706 fnamecmp = fnamecmpbuf;
1712 init_stat_x(&real_sx);
1713 real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
1716 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1717 && link_stat(partialptr, &partial_st, 0) == 0
1718 && S_ISREG(partial_st.st_mode)) {
1720 goto prepare_to_open;
1724 if (statret != 0 && fuzzy_basis) {
1725 /* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
1726 fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
1728 f_name(fuzzy_file, fnamecmpbuf);
1729 if (DEBUG_GTE(FUZZY, 1)) {
1730 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1731 fname, fnamecmpbuf);
1733 sx.st.st_size = F_LENGTH(fuzzy_file);
1735 fnamecmp = fnamecmpbuf;
1740 #ifdef SUPPORT_HARD_LINKS
1741 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1742 cur_flist->in_progress++;
1746 if (stat_errno == ENOENT)
1748 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1753 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1755 else if (fnamecmp_type == FNAMECMP_FUZZY)
1757 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1759 do_unlink(partialptr);
1760 handle_partial_dir(partialptr, PDIR_DELETE);
1762 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1764 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1765 #ifdef SUPPORT_HARD_LINKS
1766 if (preserve_hard_links && F_IS_HLINKED(file))
1767 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1769 if (remove_source_files != 1)
1771 return_with_success:
1773 send_msg_int(MSG_SUCCESS, ndx);
1777 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1778 #ifdef SUPPORT_HARD_LINKS
1779 if (F_IS_HLINKED(file))
1780 handle_skipped_hlink(file, itemizing, code, f_out);
1788 fnamecmp = partialptr;
1789 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1796 if (read_batch || whole_file) {
1797 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1798 if (!(backupptr = get_backup_name(fname)))
1800 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1801 goto pretend_missing;
1802 if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1803 unmake_file(back_file);
1811 if (fuzzy_dirlist[0]) {
1812 int j = flist_find(fuzzy_dirlist[0], file);
1813 if (j >= 0) /* don't use changing file as future fuzzy basis */
1814 fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
1818 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1819 rsyserr(FERROR, errno, "failed to open %s, continuing",
1820 full_fname(fnamecmp));
1822 /* pretend the file didn't exist */
1823 #ifdef SUPPORT_HARD_LINKS
1824 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1825 cur_flist->in_progress++;
1829 statret = real_ret = -1;
1833 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1834 if (!(backupptr = get_backup_name(fname))) {
1838 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1840 goto pretend_missing;
1842 if (robust_unlink(backupptr) && errno != ENOENT) {
1843 rsyserr(FERROR_XFER, errno, "unlink %s",
1844 full_fname(backupptr));
1845 unmake_file(back_file);
1850 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1851 rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1852 unmake_file(back_file);
1857 fnamecmp_type = FNAMECMP_BACKUP;
1860 if (DEBUG_GTE(DELTASUM, 3)) {
1861 rprintf(FINFO, "gen mapped %s of size %s\n",
1862 fnamecmp, big_num(sx.st.st_size));
1865 if (DEBUG_GTE(DELTASUM, 2))
1866 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1869 if (remove_source_files && !delay_updates && !phase && !dry_run)
1870 increment_active_files(ndx, itemizing, code);
1871 if (inc_recurse && (!dry_run || write_batch < 0))
1872 cur_flist->in_progress++;
1873 #ifdef SUPPORT_HARD_LINKS
1874 if (preserve_hard_links && F_IS_HLINKED(file))
1875 file->flags |= FLAG_FILE_SENT;
1877 write_ndx(f_out, ndx);
1879 int iflags = ITEM_TRANSFER;
1880 if (always_checksum > 0)
1881 iflags |= ITEM_REPORT_CHANGE;
1882 if (fnamecmp_type != FNAMECMP_FNAME)
1883 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1884 if (fnamecmp_type >= FNAMECMP_FUZZY)
1885 iflags |= ITEM_XNAME_FOLLOWS;
1886 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1887 fuzzy_file ? fuzzy_file->basename : NULL);
1888 free_stat_x(&real_sx);
1892 #ifdef SUPPORT_HARD_LINKS
1893 if (preserve_hard_links && F_IS_HLINKED(file))
1894 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1901 if (statret != 0 || whole_file)
1902 write_sum_head(f_out, NULL);
1903 else if (sx.st.st_size <= 0) {
1904 write_sum_head(f_out, NULL);
1907 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1909 "WARNING: file is too large for checksum sending: %s\n",
1911 write_sum_head(f_out, NULL);
1918 int save_preserve_xattrs = preserve_xattrs;
1921 #ifdef SUPPORT_XATTRS
1922 if (preserve_xattrs) {
1923 copy_xattrs(fname, backupptr);
1924 preserve_xattrs = 0;
1927 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1928 preserve_xattrs = save_preserve_xattrs;
1929 if (INFO_GTE(BACKUP, 1)) {
1930 rprintf(FINFO, "backed up %s to %s\n",
1933 unmake_file(back_file);
1939 /* If we are replacing an existing hard link, symlink, device, or special file,
1940 * create a temp-name item and rename it into place. A symlimk specifies slnk,
1941 * a hard link specifies hlnk, otherwise we create a device based on rdev.
1942 * Specify 0 for the del_for_flag if there is not a file to replace. This
1943 * returns 1 on success and 0 on failure. */
1944 int atomic_create(struct file_struct *file, char *fname, const char *slnk, const char *hlnk,
1945 dev_t rdev, stat_x *sxp, int del_for_flag)
1947 char tmpname[MAXPATHLEN];
1948 const char *create_name;
1949 int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1951 if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1957 if (make_backups > 0 && !dir_in_the_way) {
1958 if (!make_backup(fname, skip_atomic))
1960 } else if (skip_atomic) {
1961 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1962 if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1967 create_name = skip_atomic ? fname : tmpname;
1970 #ifdef SUPPORT_LINKS
1971 if (do_symlink(slnk, create_name) < 0) {
1972 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1973 full_fname(create_name), slnk);
1980 #ifdef SUPPORT_HARD_LINKS
1981 if (!hard_link_one(file, create_name, hlnk, 0))
1987 if (do_mknod(create_name, file->mode, rdev) < 0) {
1988 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1989 full_fname(create_name));
1995 if (do_rename(tmpname, fname) < 0) {
1996 rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
1997 full_fname(tmpname), full_fname(fname));
2006 #ifdef SUPPORT_HARD_LINKS
2007 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2008 enum logcode code, int f_out)
2010 char fbuf[MAXPATHLEN];
2012 struct file_list *save_flist = cur_flist;
2014 /* If we skip the last item in a chain of links and there was a
2015 * prior non-skipped hard-link waiting to finish, finish it now. */
2016 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2019 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2020 cur_flist->in_progress--; /* undo prior increment */
2022 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2024 cur_flist = save_flist;
2028 static void touch_up_dirs(struct file_list *flist, int ndx)
2030 static int counter = 0;
2031 struct file_struct *file;
2038 end = flist->used - 1;
2042 /* Fix any directory permissions that were modified during the
2043 * transfer and/or re-set any tweaked modified-time values. */
2044 for (i = start; i <= end; i++, counter++) {
2045 file = flist->files[i];
2046 if (!F_IS_ACTIVE(file))
2048 if (!S_ISDIR(file->mode)
2049 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2051 if (DEBUG_GTE(TIME, 2)) {
2052 fname = f_name(file, NULL);
2053 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2056 /* Be sure not to retouch permissions with --fake-super. */
2057 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2058 if (file->flags & FLAG_MISSING_DIR || !(need_retouch_dir_times || fix_dir_perms))
2060 fname = f_name(file, NULL);
2062 do_chmod(fname, file->mode);
2063 if (need_retouch_dir_times) {
2065 if (link_stat(fname, &st, 0) == 0
2066 && cmp_time(st.st_mtime, file->modtime) != 0)
2067 set_modtime(fname, file->modtime, F_MOD_NSEC(file), file->mode);
2069 if (counter >= loopchk_limit) {
2071 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2073 maybe_flush_socket(0);
2079 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2081 struct file_struct *file;
2082 struct file_list *flist;
2083 char fbuf[MAXPATHLEN];
2087 #ifdef SUPPORT_HARD_LINKS
2088 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2089 int send_failed = (ndx == -2);
2091 ndx = get_hlink_num();
2092 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2093 file = flist->files[ndx - flist->ndx_start];
2094 assert(file->flags & FLAG_HLINKED);
2096 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2098 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2099 flist->in_progress--;
2104 if (check_redo && (ndx = get_redo_num()) != -1) {
2105 OFF_T save_max_size = max_size;
2106 OFF_T save_min_size = min_size;
2107 csum_length = SUM_LENGTH;
2110 ignore_existing = -ignore_existing;
2111 ignore_non_existing = -ignore_non_existing;
2112 update_only = -update_only;
2113 always_checksum = -always_checksum;
2114 size_only = -size_only;
2115 append_mode = -append_mode;
2116 make_backups = -make_backups; /* avoid dup backup w/inplace */
2120 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2122 file = cur_flist->files[ndx - cur_flist->ndx_start];
2124 strlcpy(fbuf, solo_file, sizeof fbuf);
2127 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2128 cur_flist->to_redo--;
2132 csum_length = SHORT_SUM_LENGTH;
2133 max_size = save_max_size;
2134 min_size = save_min_size;
2135 ignore_existing = -ignore_existing;
2136 ignore_non_existing = -ignore_non_existing;
2137 update_only = -update_only;
2138 always_checksum = -always_checksum;
2139 size_only = -size_only;
2140 append_mode = -append_mode;
2141 make_backups = -make_backups;
2146 if (cur_flist == first_flist)
2149 /* We only get here if inc_recurse is enabled. */
2150 if (first_flist->in_progress || first_flist->to_redo)
2153 write_ndx(sock_f_out, NDX_DONE);
2154 if (!read_batch && !flist_eof) {
2156 for (flist = first_flist; flist != cur_flist; flist = flist->next)
2157 old_total += flist->used;
2158 maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2161 if (delete_during == 2 || !dir_tweaking) {
2162 /* Skip directory touch-up. */
2163 } else if (first_flist->parent_ndx >= 0)
2164 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2166 flist_free(first_flist); /* updates first_flist */
2170 void generate_files(int f_out, const char *local_name)
2172 int i, ndx, next_loopchk = 0;
2173 char fbuf[MAXPATHLEN];
2176 int save_info_flist = info_levels[INFO_FLIST];
2177 int save_info_progress = info_levels[INFO_PROGRESS];
2179 if (protocol_version >= 29) {
2181 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2182 code = logfile_format_has_i ? FNONE : FLOG;
2183 } else if (am_daemon) {
2184 itemizing = logfile_format_has_i && do_xfers;
2185 maybe_ATTRS_REPORT = ATTRS_REPORT;
2186 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2187 } else if (!am_server) {
2188 itemizing = stdout_format_has_i;
2189 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2190 code = itemizing ? FNONE : FINFO;
2193 maybe_ATTRS_REPORT = ATTRS_REPORT;
2196 solo_file = local_name;
2197 dir_tweaking = !(list_only || solo_file || dry_run);
2198 need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2199 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2200 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2201 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2202 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2204 if (DEBUG_GTE(GENR, 1))
2205 rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
2207 if (delete_before && !solo_file && cur_flist->used > 0)
2209 if (delete_during == 2) {
2210 deldelay_size = BIGPATHBUFLEN * 4;
2211 deldelay_buf = new_array(char, deldelay_size);
2213 out_of_memory("delete-delay");
2215 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2217 if (append_mode > 0 || whole_file < 0)
2219 if (DEBUG_GTE(FLIST, 1)) {
2220 rprintf(FINFO, "delta-transmission %s\n",
2222 ? "disabled for local transfer or --whole-file"
2226 dflt_perms = (ACCESSPERMS & ~orig_umask);
2229 #ifdef SUPPORT_HARD_LINKS
2230 if (preserve_hard_links && inc_recurse) {
2231 while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2232 wait_for_receiver();
2236 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2237 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2239 strlcpy(fbuf, solo_file, sizeof fbuf);
2242 ndx = cur_flist->ndx_start - 1;
2243 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2244 if (delete_during && dry_run < 2 && !list_only
2245 && !(fp->flags & FLAG_MISSING_DIR)) {
2246 if (fp->flags & FLAG_CONTENT_DIR) {
2248 if (one_file_system) {
2249 uint32 *devp = F_DIR_DEV_P(fp);
2250 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2252 dirdev = MAKEDEV(0, 0);
2253 delete_in_dir(fbuf, fp, &dirdev);
2255 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2258 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2259 struct file_struct *file = cur_flist->sorted[i];
2261 if (!F_IS_ACTIVE(file))
2267 ndx = i + cur_flist->ndx_start;
2270 strlcpy(fbuf, solo_file, sizeof fbuf);
2273 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2275 check_for_finished_files(itemizing, code, 0);
2277 if (i + cur_flist->ndx_start >= next_loopchk) {
2279 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2281 maybe_flush_socket(0);
2282 next_loopchk += loopchk_limit;
2287 write_ndx(f_out, NDX_DONE);
2292 check_for_finished_files(itemizing, code, 1);
2293 if (cur_flist->next || flist_eof)
2295 wait_for_receiver();
2297 } while ((cur_flist = cur_flist->next) != NULL);
2300 delete_in_dir(NULL, NULL, &dev_zero);
2302 if (DEBUG_GTE(GENR, 1))
2303 rprintf(FINFO, "generate_files phase=%d\n", phase);
2306 check_for_finished_files(itemizing, code, 1);
2309 wait_for_receiver();
2313 if (DEBUG_GTE(GENR, 1))
2314 rprintf(FINFO, "generate_files phase=%d\n", phase);
2316 write_ndx(f_out, NDX_DONE);
2318 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2319 if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2320 write_ndx(f_out, NDX_DONE);
2322 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2323 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2324 write_del_stats(f_out);
2325 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2326 write_ndx(f_out, NDX_DONE);
2329 /* Read MSG_DONE for the redo phase (and any prior messages). */
2331 check_for_finished_files(itemizing, code, 0);
2332 if (msgdone_cnt > 1)
2334 wait_for_receiver();
2337 if (protocol_version >= 29) {
2339 if (DEBUG_GTE(GENR, 1))
2340 rprintf(FINFO, "generate_files phase=%d\n", phase);
2341 if (!EARLY_DELAY_DONE_MSG()) {
2342 write_ndx(f_out, NDX_DONE);
2343 if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2344 write_ndx(f_out, NDX_DONE);
2346 /* Read MSG_DONE for delay-updates phase & prior messages. */
2347 while (msgdone_cnt == 2)
2348 wait_for_receiver();
2351 info_levels[INFO_FLIST] = save_info_flist;
2352 info_levels[INFO_PROGRESS] = save_info_progress;
2354 if (delete_during == 2)
2355 do_delayed_deletions(fbuf);
2356 if (delete_after && !solo_file && file_total > 0)
2359 if (max_delete >= 0 && skipped_deletes) {
2361 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2363 io_error |= IOERR_DEL_LIMIT;
2366 if (protocol_version >= 31) {
2367 if (!EARLY_DELETE_DONE_MSG()) {
2368 if (INFO_GTE(STATS, 2) || read_batch)
2369 write_del_stats(f_out);
2370 write_ndx(f_out, NDX_DONE);
2373 /* Read MSG_DONE for late-delete phase & prior messages. */
2374 while (msgdone_cnt == 3)
2375 wait_for_receiver();
2378 if ((need_retouch_dir_perms || need_retouch_dir_times)
2379 && dir_tweaking && (!inc_recurse || delete_during == 2))
2380 touch_up_dirs(dir_flist, -1);
2382 if (DEBUG_GTE(GENR, 1))
2383 rprintf(FINFO, "generate_files finished\n");