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) 2003-2008 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.
27 extern int stdout_format_has_i;
28 extern int logfile_format_has_i;
32 extern int inc_recurse;
33 extern int relative_paths;
34 extern int implied_dirs;
35 extern int keep_dirlinks;
36 extern int preserve_acls;
37 extern int preserve_xattrs;
38 extern int preserve_links;
39 extern int preserve_devices;
40 extern int preserve_specials;
41 extern int preserve_hard_links;
42 extern int preserve_executability;
43 extern int preserve_perms;
44 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 msgdone_cnt;
52 extern int ignore_errors;
53 extern int remove_source_files;
54 extern int delay_updates;
55 extern int update_only;
56 extern int ignore_existing;
57 extern int ignore_non_existing;
59 extern int append_mode;
60 extern int make_backups;
61 extern int csum_length;
62 extern int ignore_times;
64 extern OFF_T max_size;
65 extern OFF_T min_size;
68 extern int allowed_lull;
69 extern int sock_f_out;
70 extern int ignore_timeout;
71 extern int protocol_version;
72 extern int file_total;
73 extern int fuzzy_basis;
74 extern int always_checksum;
75 extern int checksum_len;
76 extern char *partial_dir;
77 extern int compare_dest;
80 extern int whole_file;
82 extern int read_batch;
83 extern int safe_symlinks;
84 extern long block_size; /* "long" because popt can't set an int32. */
85 extern int unsort_ndx;
86 extern int max_delete;
87 extern int force_delete;
88 extern int one_file_system;
89 extern int check_for_io_err;
90 extern struct stats stats;
91 extern dev_t filesystem_dev;
92 extern mode_t orig_umask;
94 extern char *backup_dir;
95 extern char *backup_suffix;
96 extern int backup_suffix_len;
97 extern char *basis_dir[MAX_BASIS_DIRS+1];
98 extern struct file_list *cur_flist, *first_flist, *dir_flist;
99 extern struct filter_list_struct daemon_filter_list;
101 int ignore_perishable = 0;
102 int non_perishable_cnt = 0;
103 int maybe_ATTRS_REPORT = 0;
105 static dev_t dev_zero;
106 static int deletion_count = 0; /* used to implement --max-delete */
107 static int deldelay_size = 0, deldelay_cnt = 0;
108 static char *deldelay_buf = NULL;
109 static int deldelay_fd = -1;
110 static int loopchk_limit;
111 static int dir_tweaking;
112 static int symlink_timeset_failed_flags;
113 static int need_retouch_dir_times;
114 static int need_retouch_dir_perms;
115 static const char *solo_file = NULL;
117 /* For calling delete_item() and delete_dir_contents(). */
118 #define DEL_NO_UID_WRITE (1<<0) /* file/dir has our uid w/o write perm */
119 #define DEL_RECURSE (1<<1) /* if dir, delete all contents */
120 #define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
121 #define DEL_FOR_FILE (1<<3) /* making room for a replacement file */
122 #define DEL_FOR_DIR (1<<4) /* making room for a replacement dir */
123 #define DEL_FOR_SYMLINK (1<<5) /* making room for a replacement symlink */
124 #define DEL_FOR_DEVICE (1<<6) /* making room for a replacement device */
125 #define DEL_FOR_SPECIAL (1<<7) /* making room for a replacement special */
127 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
130 TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
134 DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
137 /* Forward declarations. */
138 static enum delret delete_dir_contents(char *fname, uint16 flags);
139 #ifdef SUPPORT_HARD_LINKS
140 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
141 enum logcode code, int f_out);
144 static int is_backup_file(char *fn)
146 int k = strlen(fn) - backup_suffix_len;
147 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
150 /* Delete a file or directory. If DEL_RECURSE is set in the flags, this will
151 * delete recursively.
153 * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
154 * a directory! (The buffer is used for recursion, but returned unchanged.)
156 static enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
162 if (DEBUG_GTE(DEL, 2)) {
163 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
164 fbuf, (int)mode, (int)flags);
167 if (flags & DEL_NO_UID_WRITE)
168 do_chmod(fbuf, mode | S_IWUSR);
170 if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
171 int save_uid_ndx = uid_ndx;
172 /* This only happens on the first call to delete_item() since
173 * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
175 uid_ndx = ++file_extra_cnt;
176 ignore_perishable = 1;
177 /* If DEL_RECURSE is not set, this just reports emptiness. */
178 ret = delete_dir_contents(fbuf, flags);
179 ignore_perishable = 0;
184 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
186 /* OK: try to delete the directory. */
189 if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && ++deletion_count > max_delete)
194 ok = do_rmdir(fbuf) == 0;
195 } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
196 what = "make_backup";
197 ok = make_backup(fbuf);
200 ok = robust_unlink(fbuf) == 0;
204 if (!(flags & DEL_MAKE_ROOM))
205 log_delete(fbuf, mode);
208 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
209 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
212 } else if (errno != ENOENT) {
213 rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
223 if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
225 switch (flags & DEL_MAKE_ROOM) {
226 case DEL_FOR_FILE: desc = "regular file"; break;
227 case DEL_FOR_DIR: desc = "directory"; break;
228 case DEL_FOR_SYMLINK: desc = "symlink"; break;
229 case DEL_FOR_DEVICE: desc = "device file"; break;
230 case DEL_FOR_SPECIAL: desc = "special file"; break;
231 default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
233 rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
239 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
240 * its contents, otherwise just checks for content. Returns DR_SUCCESS or
241 * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
242 * buffer is used for recursion, but returned unchanged.)
244 static enum delret delete_dir_contents(char *fname, uint16 flags)
246 struct file_list *dirlist;
253 if (DEBUG_GTE(DEL, 3)) {
254 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
258 dlen = strlen(fname);
259 save_filters = push_local_filters(fname, dlen);
261 non_perishable_cnt = 0;
262 dirlist = get_dirlist(fname, dlen, 0);
263 ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
268 if (!(flags & DEL_RECURSE)) {
274 if (dlen != 1 || *fname != '/')
276 remainder = MAXPATHLEN - (p - fname);
278 /* We do our own recursion, so make delete_item() non-recursive. */
279 flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
282 for (j = dirlist->used; j--; ) {
283 struct file_struct *fp = dirlist->files[j];
285 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
286 if (DEBUG_GTE(DEL, 1)) {
288 "mount point, %s, pins parent directory\n",
295 strlcpy(p, fp->basename, remainder);
296 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
297 do_chmod(fname, fp->mode | S_IWUSR);
298 /* Save stack by recursing to ourself directly. */
299 if (S_ISDIR(fp->mode)) {
300 if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
303 if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
311 pop_local_filters(save_filters);
313 if (ret == DR_NOT_EMPTY) {
314 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
320 static int start_delete_delay_temp(void)
322 char fnametmp[MAXPATHLEN];
323 int save_dry_run = dry_run;
326 if (!get_tmpname(fnametmp, "deldelay")
327 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
328 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
329 inc_recurse ? "" : " -- switching to --delete-after");
331 delete_after = !inc_recurse;
332 dry_run = save_dry_run;
336 dry_run = save_dry_run;
340 static int flush_delete_delay(void)
342 if (deldelay_fd < 0 && !start_delete_delay_temp())
344 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
345 rsyserr(FERROR, errno, "flush of delete-delay buffer");
347 delete_after = !inc_recurse;
355 static int remember_delete(struct file_struct *file, const char *fname, int flags)
359 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
362 if (flags & DEL_NO_UID_WRITE)
363 deldelay_buf[deldelay_cnt++] = '!';
366 len = snprintf(deldelay_buf + deldelay_cnt,
367 deldelay_size - deldelay_cnt,
369 (int)file->mode, fname, '\0');
370 if ((deldelay_cnt += len) <= deldelay_size)
373 if (!flush_delete_delay())
380 static int read_delay_line(char *buf, int *flags_p)
382 static int read_pos = 0;
384 char *bp, *past_space;
387 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
388 if (j < deldelay_cnt)
390 if (deldelay_fd < 0) {
395 deldelay_cnt -= read_pos;
396 if (deldelay_cnt == deldelay_size)
398 if (deldelay_cnt && read_pos) {
399 memmove(deldelay_buf, deldelay_buf + read_pos,
402 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
403 deldelay_size - deldelay_cnt);
407 "ERROR: unexpected EOF in delete-delay file.\n");
412 rsyserr(FERROR, errno,
413 "reading delete-delay file");
420 bp = deldelay_buf + read_pos;
423 *flags_p = DEL_NO_UID_WRITE;
427 if (sscanf(bp, "%x ", &mode) != 1) {
429 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
432 past_space = strchr(bp, ' ') + 1;
433 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
436 if (len > MAXPATHLEN) {
437 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
441 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
442 * instead of returning a pointer to our buffer. */
443 memcpy(buf, past_space, len);
448 static void do_delayed_deletions(char *delbuf)
452 if (deldelay_fd >= 0) {
453 if (deldelay_cnt && !flush_delete_delay())
455 lseek(deldelay_fd, 0, 0);
457 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
458 delete_item(delbuf, mode, flags | DEL_RECURSE);
459 if (deldelay_fd >= 0)
463 /* This function is used to implement per-directory deletion, and is used by
464 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
465 * MAXPATHLEN buffer with the name of the directory in it (the functions we
466 * call will append names onto the end, but the old dir value will be restored
468 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
470 static int already_warned = 0;
471 struct file_list *dirlist;
472 char delbuf[MAXPATHLEN];
474 int save_uid_ndx = uid_ndx;
477 change_local_filter_dir(NULL, 0, 0);
481 if (DEBUG_GTE(DEL, 2))
482 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
485 maybe_send_keepalive();
487 if (io_error && !ignore_errors) {
491 "IO error encountered -- skipping file deletion\n");
497 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
499 if (one_file_system) {
500 if (file->flags & FLAG_TOP_DIR)
501 filesystem_dev = *fs_dev;
502 else if (filesystem_dev != *fs_dev)
507 uid_ndx = ++file_extra_cnt;
509 dirlist = get_dirlist(fbuf, dlen, 0);
511 /* If an item in dirlist is not found in flist, delete it
512 * from the filesystem. */
513 for (i = dirlist->used; i--; ) {
514 struct file_struct *fp = dirlist->files[i];
515 if (!F_IS_ACTIVE(fp))
517 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
518 if (INFO_GTE(MOUNT, 1))
519 rprintf(FINFO, "cannot delete mount point: %s\n",
523 if (flist_find(cur_flist, fp) < 0) {
524 int flags = DEL_RECURSE;
525 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
526 flags |= DEL_NO_UID_WRITE;
528 if (delete_during == 2) {
529 if (!remember_delete(fp, delbuf, flags))
532 delete_item(delbuf, fp->mode, flags);
544 /* This deletes any files on the receiving side that are not present on the
545 * sending side. This is used by --delete-before and --delete-after. */
546 static void do_delete_pass(void)
548 char fbuf[MAXPATHLEN];
552 /* dry_run is incremented when the destination doesn't exist yet. */
553 if (dry_run > 1 || list_only)
556 for (j = 0; j < cur_flist->used; j++) {
557 struct file_struct *file = cur_flist->sorted[j];
561 if (!(file->flags & FLAG_CONTENT_DIR)) {
562 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
566 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
567 rprintf(FINFO, "deleting in %s\n", fbuf);
569 if (link_stat(fbuf, &st, keep_dirlinks) < 0
570 || !S_ISDIR(st.st_mode))
573 delete_in_dir(fbuf, file, &st.st_dev);
575 delete_in_dir(NULL, NULL, &dev_zero);
577 if (INFO_GTE(FLIST, 2) && !am_server)
578 rprintf(FINFO, " \r");
581 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
583 #if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
584 if (S_ISLNK(file->mode)) {
588 if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
591 if (preserve_perms) {
592 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
594 } else if (preserve_executability
595 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
598 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
601 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
605 if (preserve_acls && !S_ISLNK(file->mode)) {
606 if (!ACL_READY(*sxp))
608 if (set_acl(NULL, file, sxp) == 0)
612 #ifdef SUPPORT_XATTRS
613 if (preserve_xattrs) {
614 if (!XATTR_READY(*sxp))
615 get_xattr(fname, sxp);
616 if (xattr_diff(file, sxp, 0))
624 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
625 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
628 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
629 int keep_time = !preserve_times ? 0
630 : S_ISDIR(file->mode) ? preserve_times > 1 :
631 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
634 !S_ISLNK(file->mode);
637 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
638 iflags |= ITEM_REPORT_SIZE;
639 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
640 if (iflags & ITEM_LOCAL_CHANGE)
641 iflags |= symlink_timeset_failed_flags;
643 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
644 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
645 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
646 iflags |= ITEM_REPORT_TIME;
647 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
648 if (S_ISLNK(file->mode)) {
652 if (preserve_perms) {
653 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
654 iflags |= ITEM_REPORT_PERMS;
655 } else if (preserve_executability
656 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
657 iflags |= ITEM_REPORT_PERMS;
658 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
659 iflags |= ITEM_REPORT_OWNER;
660 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
661 && sxp->st.st_gid != (gid_t)F_GROUP(file))
662 iflags |= ITEM_REPORT_GROUP;
664 if (preserve_acls && !S_ISLNK(file->mode)) {
665 if (!ACL_READY(*sxp))
666 get_acl(fnamecmp, sxp);
667 if (set_acl(NULL, file, sxp) == 0)
668 iflags |= ITEM_REPORT_ACL;
671 #ifdef SUPPORT_XATTRS
672 if (preserve_xattrs) {
673 if (!XATTR_READY(*sxp))
674 get_xattr(fnamecmp, sxp);
675 if (xattr_diff(file, sxp, 1))
676 iflags |= ITEM_REPORT_XATTR;
680 #ifdef SUPPORT_XATTRS
681 if (preserve_xattrs && xattr_diff(file, NULL, 1))
682 iflags |= ITEM_REPORT_XATTR;
684 iflags |= ITEM_IS_NEW;
688 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
689 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
690 if (protocol_version >= 29) {
692 write_ndx(sock_f_out, ndx);
693 write_shortint(sock_f_out, iflags);
694 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
695 write_byte(sock_f_out, fnamecmp_type);
696 if (iflags & ITEM_XNAME_FOLLOWS)
697 write_vstring(sock_f_out, xname, strlen(xname));
698 #ifdef SUPPORT_XATTRS
699 if (preserve_xattrs && !dry_run
700 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
701 send_xattr_request(NULL, file,
702 iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
705 } else if (ndx >= 0) {
706 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
707 log_item(code, file, &stats, iflags, xname);
713 /* Perform our quick-check heuristic for determining if a file is unchanged. */
714 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
716 if (st->st_size != F_LENGTH(file))
719 /* if always checksum is set then we use the checksum instead
720 of the file time to determine whether to sync */
721 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
722 char sum[MAX_DIGEST_LEN];
723 file_checksum(fn, sum, st->st_size);
724 return memcmp(sum, F_SUM(file), checksum_len) == 0;
733 return cmp_time(st->st_mtime, file->modtime) == 0;
738 * set (initialize) the size entries in the per-file sum_struct
739 * calculating dynamic block and checksum sizes.
741 * This is only called from generate_and_send_sums() but is a separate
742 * function to encapsulate the logic.
744 * The block size is a rounded square root of file length.
746 * The checksum size is determined according to:
747 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
748 * provided by Donovan Baarda which gives a probability of rsync
749 * algorithm corrupting data and falling back using the whole md4
752 * This might be made one of several selectable heuristics.
754 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
761 blength = block_size;
762 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
763 blength = BLOCK_SIZE;
765 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
768 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
769 if (c < 0 || c >= max_blength)
770 blength = max_blength;
775 if (len < (int64)blength * blength)
778 } while (c >= 8); /* round to multiple of 8 */
779 blength = MAX(blength, BLOCK_SIZE);
783 if (protocol_version < 27) {
784 s2length = csum_length;
785 } else if (csum_length == SUM_LENGTH) {
786 s2length = SUM_LENGTH;
789 int b = BLOCKSUM_BIAS;
790 for (l = len; l >>= 1; b += 2) {}
791 for (c = blength; (c >>= 1) && b; b--) {}
792 /* add a bit, subtract rollsum, round up. */
793 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
794 s2length = MAX(s2length, csum_length);
795 s2length = MIN(s2length, SUM_LENGTH);
799 sum->blength = blength;
800 sum->s2length = s2length;
801 sum->remainder = (int32)(len % blength);
802 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
804 if ((int64)sum->count != l)
807 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
809 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
810 big_num(sum->count, 0), (long)sum->remainder, (long)sum->blength,
811 sum->s2length, big_num(sum->flength, 0));
817 * Generate and send a stream of signatures/checksums that describe a buffer
819 * Generate approximately one checksum every block_len bytes.
821 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
824 struct map_struct *mapbuf;
825 struct sum_struct sum;
828 sum_sizes_sqroot(&sum, len);
831 write_sum_head(f_out, &sum);
833 if (append_mode > 0 && f_copy < 0)
837 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
841 for (i = 0; i < sum.count; i++) {
842 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
843 char *map = map_ptr(mapbuf, offset, n1);
844 char sum2[SUM_LENGTH];
851 full_write(f_copy, map, n1);
856 sum1 = get_checksum1(map, n1);
857 get_checksum2(map, n1, sum2);
859 if (DEBUG_GTE(DELTASUM, 3)) {
861 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
862 big_num(i, 0), big_num(offset - n1, 0), (long)n1,
863 (unsigned long)sum1);
865 write_int(f_out, sum1);
866 write_buf(f_out, sum2, sum.s2length);
876 /* Try to find a filename in the same dir as "fname" with a similar name. */
877 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
879 int fname_len, fname_suf_len;
880 const char *fname_suf, *fname = file->basename;
881 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
882 int j, lowest_j = -1;
884 fname_len = strlen(fname);
885 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
887 for (j = 0; j < dirlist->used; j++) {
888 struct file_struct *fp = dirlist->files[j];
889 const char *suf, *name;
893 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
894 || fp->flags & FLAG_FILE_SENT)
899 if (F_LENGTH(fp) == F_LENGTH(file)
900 && cmp_time(fp->modtime, file->modtime) == 0) {
901 if (DEBUG_GTE(FUZZY, 2)) {
903 "fuzzy size/modtime match for %s\n",
910 suf = find_filename_suffix(name, len, &suf_len);
912 dist = fuzzy_distance(name, len, fname, fname_len);
913 /* Add some extra weight to how well the suffixes match. */
914 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
916 if (DEBUG_GTE(FUZZY, 2)) {
917 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
918 name, (int)(dist>>16), (int)(dist&0xFFFF));
920 if (dist <= lowest_dist) {
929 /* Copy a file found in our --copy-dest handling. */
930 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
932 char buf[MAXPATHLEN];
933 const char *copy_to, *partialptr;
934 int save_preserve_xattrs = preserve_xattrs;
938 /* Let copy_file open the destination in place. */
942 fd_w = open_tmpfile(buf, dest, file);
947 cleanup_set(copy_to, NULL, NULL, -1, -1);
948 if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
949 if (INFO_GTE(COPY, 1)) {
950 rsyserr(FINFO, errno, "copy_file %s => %s",
951 full_fname(src), copy_to);
953 /* Try to clean up. */
958 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
959 preserve_xattrs = 0; /* xattrs were copied with file */
960 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
961 preserve_xattrs = save_preserve_xattrs;
966 /* This is only called for regular files. We return -2 if we've finished
967 * handling the file, -1 if no dest-linking occurred, or a non-negative
968 * value if we found an alternate basis file. */
969 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
970 char *cmpbuf, stat_x *sxp, int itemizing,
978 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
979 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
981 switch (match_level) {
987 if (!unchanged_file(cmpbuf, file, &sxp->st))
993 if (!unchanged_attrs(cmpbuf, file, sxp))
1000 } while (basis_dir[++j] != NULL);
1005 if (j != best_match) {
1007 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1008 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1012 if (match_level == 3 && !copy_dest) {
1013 #ifdef SUPPORT_HARD_LINKS
1015 if (!hard_link_one(file, fname, cmpbuf, 1))
1017 if (preserve_hard_links && F_IS_HLINKED(file))
1018 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1019 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1020 itemize(cmpbuf, file, ndx, 1, sxp,
1021 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1027 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1028 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
1029 rprintf(FCLIENT, "%s is uptodate\n", fname);
1033 if (match_level >= 2) {
1034 #ifdef SUPPORT_HARD_LINKS
1035 try_a_copy: /* Copy the file locally. */
1037 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1040 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1041 if (maybe_ATTRS_REPORT
1042 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
1043 || (INFO_GTE(NAME, 2) && match_level == 3))) {
1044 code = match_level == 3 ? FCLIENT : FINFO;
1045 rprintf(code, "%s%s\n", fname,
1046 match_level == 3 ? " is uptodate" : "");
1048 #ifdef SUPPORT_HARD_LINKS
1049 if (preserve_hard_links && F_IS_HLINKED(file))
1050 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1055 return FNAMECMP_BASIS_DIR_LOW + j;
1058 /* This is only called for non-regular files. We return -2 if we've finished
1059 * handling the file, or -1 if no dest-linking occurred, or a non-negative
1060 * value if we found an alternate basis file. */
1061 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1062 char *cmpbuf, stat_x *sxp, int itemizing,
1065 char lnk[MAXPATHLEN];
1066 int best_match = -1;
1067 int match_level = 0;
1068 enum nonregtype type;
1072 #ifndef SUPPORT_LINKS
1073 if (S_ISLNK(file->mode))
1076 if (S_ISDIR(file->mode)) {
1078 } else if (IS_SPECIAL(file->mode))
1079 type = TYPE_SPECIAL;
1080 else if (IS_DEVICE(file->mode))
1082 #ifdef SUPPORT_LINKS
1083 else if (S_ISLNK(file->mode))
1084 type = TYPE_SYMLINK;
1088 "internal: try_dests_non() called with invalid mode (%o)\n",
1090 exit_cleanup(RERR_UNSUPPORTED);
1094 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1095 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1099 if (!S_ISDIR(sxp->st.st_mode))
1103 if (!IS_SPECIAL(sxp->st.st_mode))
1107 if (!IS_DEVICE(sxp->st.st_mode))
1110 #ifdef SUPPORT_LINKS
1112 if (!S_ISLNK(sxp->st.st_mode))
1117 if (match_level < 1) {
1126 devp = F_RDEV_P(file);
1127 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1130 #ifdef SUPPORT_LINKS
1132 if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1135 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1140 if (match_level < 2) {
1144 if (unchanged_attrs(cmpbuf, file, sxp)) {
1149 } while (basis_dir[++j] != NULL);
1154 if (j != best_match) {
1156 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1157 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1161 if (match_level == 3) {
1162 #ifdef SUPPORT_HARD_LINKS
1164 #ifndef CAN_HARDLINK_SYMLINK
1165 && !S_ISLNK(file->mode)
1167 #ifndef CAN_HARDLINK_SPECIAL
1168 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1170 && !S_ISDIR(file->mode)) {
1171 if (do_link(cmpbuf, fname) < 0) {
1172 rsyserr(FERROR_XFER, errno,
1173 "failed to hard-link %s with %s",
1177 if (preserve_hard_links && F_IS_HLINKED(file))
1178 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1182 if (itemizing && stdout_format_has_i
1183 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1184 int chg = compare_dest && type != TYPE_DIR ? 0
1185 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1186 char *lp = match_level == 3 ? "" : NULL;
1187 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1189 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1190 rprintf(FCLIENT, "%s%s is uptodate\n",
1191 fname, type == TYPE_DIR ? "/" : "");
1199 static void list_file_entry(struct file_struct *f)
1201 char permbuf[PERMSTRING_SIZE];
1204 if (!F_IS_ACTIVE(f)) {
1205 /* this can happen if duplicate names were removed */
1209 permstring(permbuf, f->mode);
1212 /* TODO: indicate '+' if the entry has an ACL. */
1214 #ifdef SUPPORT_LINKS
1215 if (preserve_links && S_ISLNK(f->mode)) {
1216 rprintf(FINFO, "%s %11s %s %s -> %s\n",
1217 permbuf, big_num(len, 0), timestring(f->modtime),
1218 f_name(f, NULL), F_SYMLINK(f));
1222 rprintf(FINFO, "%s %11s %s %s\n",
1223 permbuf, big_num(len, 0), timestring(f->modtime),
1228 static int phase = 0;
1229 static int dflt_perms;
1231 static int implied_dirs_are_missing;
1232 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1233 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1235 return F_DEPTH(file) > F_DEPTH(subtree)
1236 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1239 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1240 * make sure it exists, and has the right permissions/timestamp info. For
1241 * all other non-regular files (symlinks, etc.) we create them here. For
1242 * regular files that have changed, we try to find a basis file and then
1243 * start sending checksums. The ndx is the file's unique index value.
1245 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1246 * passed to delete_item(), which can use it during a recursive delete.)
1248 * Note that f_out is set to -1 when doing final directory-permission and
1249 * modification-time repair. */
1250 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1251 int itemizing, enum logcode code, int f_out)
1253 static const char *parent_dirname = "";
1254 /* Missing dir not created due to --dry-run; will still be scanned. */
1255 static struct file_struct *dry_missing_dir = NULL;
1256 /* Missing dir whose contents are skipped altogether due to
1257 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1258 static struct file_struct *skip_dir = NULL;
1259 static struct file_list *fuzzy_dirlist = NULL;
1260 static int need_fuzzy_dirlist = 0;
1261 struct file_struct *fuzzy_file = NULL;
1262 int fd = -1, f_copy = -1;
1264 STRUCT_STAT partial_st;
1265 struct file_struct *back_file = NULL;
1266 int statret, real_ret, stat_errno;
1267 char *fnamecmp, *partialptr, *backupptr = NULL;
1268 char fnamecmpbuf[MAXPATHLEN];
1269 uchar fnamecmp_type;
1270 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1271 int is_dir = !S_ISDIR(file->mode) ? 0
1272 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1275 if (DEBUG_GTE(GENR, 1))
1276 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1280 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1282 list_file_entry(file);
1287 if (is_below(file, skip_dir)) {
1289 file->flags |= FLAG_MISSING_DIR;
1290 #ifdef SUPPORT_HARD_LINKS
1291 else if (F_IS_HLINKED(file))
1292 handle_skipped_hlink(file, itemizing, code, f_out);
1299 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1300 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1303 #ifdef SUPPORT_HARD_LINKS
1304 if (F_IS_HLINKED(file))
1305 handle_skipped_hlink(file, itemizing, code, f_out);
1307 rprintf(FERROR_XFER,
1308 "skipping daemon-excluded %s \"%s\"\n",
1309 is_dir ? "directory" : "file", fname);
1311 goto skipping_dir_contents;
1317 sx.acc_acl = sx.def_acl = NULL;
1319 #ifdef SUPPORT_XATTRS
1322 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1323 parent_is_dry_missing:
1324 if (fuzzy_dirlist) {
1325 flist_free(fuzzy_dirlist);
1326 fuzzy_dirlist = NULL;
1328 parent_dirname = "";
1330 stat_errno = ENOENT;
1332 const char *dn = file->dirname ? file->dirname : ".";
1333 dry_missing_dir = NULL;
1334 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1335 if (relative_paths && !implied_dirs
1336 && do_stat(dn, &sx.st) < 0) {
1338 goto parent_is_dry_missing;
1339 if (create_directory_path(fname) < 0) {
1340 rsyserr(FERROR_XFER, errno,
1341 "recv_generator: mkdir %s failed",
1345 if (fuzzy_dirlist) {
1346 flist_free(fuzzy_dirlist);
1347 fuzzy_dirlist = NULL;
1350 need_fuzzy_dirlist = 1;
1352 if (!preserve_perms)
1353 dflt_perms = default_perms_for_dir(dn);
1356 parent_dirname = dn;
1358 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1359 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1360 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1361 need_fuzzy_dirlist = 0;
1364 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1368 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1373 file->flags |= FLAG_MISSING_DIR;
1375 #ifdef SUPPORT_HARD_LINKS
1376 else if (F_IS_HLINKED(file))
1377 handle_skipped_hlink(file, itemizing, code, f_out);
1379 if (INFO_GTE(SKIP, 1)) {
1380 rprintf(FINFO, "not creating new %s \"%s\"\n",
1381 is_dir ? "directory" : "file", fname);
1386 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1387 && !am_root && sx.st.st_uid == our_uid)
1388 del_opts |= DEL_NO_UID_WRITE;
1390 if (ignore_existing > 0 && statret == 0
1391 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1392 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1393 rprintf(FINFO, "%s exists\n", fname);
1394 #ifdef SUPPORT_HARD_LINKS
1395 if (F_IS_HLINKED(file))
1396 handle_skipped_hlink(file, itemizing, code, f_out);
1402 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1405 /* In inc_recurse mode we want to make sure any missing
1406 * directories get created while we're still processing
1407 * the parent dir (which allows us to touch the parent
1408 * dir's mtime right away). We will handle the dir in
1409 * full later (right before we handle its contents). */
1411 && (S_ISDIR(sx.st.st_mode)
1412 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1413 goto cleanup; /* Any errors get reported later. */
1414 if (do_mkdir(fname, file->mode & 0700) == 0)
1415 file->flags |= FLAG_DIR_CREATED;
1418 /* The file to be received is a directory, so we need
1419 * to prepare appropriately. If there is already a
1420 * file of that name and it is *not* a directory, then
1421 * we need to delete it. If it doesn't exist, then
1422 * (perhaps recursively) create it. */
1423 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1424 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1425 goto skipping_dir_contents;
1428 if (dry_run && statret != 0) {
1429 if (!dry_missing_dir)
1430 dry_missing_dir = file;
1431 file->flags |= FLAG_MISSING_DIR;
1435 if (file->flags & FLAG_DIR_CREATED)
1437 if (!preserve_perms) { /* See comment in non-dir code below. */
1438 file->mode = dest_mode(file->mode, sx.st.st_mode,
1439 dflt_perms, statret == 0);
1441 if (statret != 0 && basis_dir[0] != NULL) {
1442 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1451 if (itemizing && f_out != -1) {
1452 itemize(fname, file, ndx, statret, &sx,
1453 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1455 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1456 if (!relative_paths || errno != ENOENT
1457 || create_directory_path(fname) < 0
1458 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1459 rsyserr(FERROR_XFER, errno,
1460 "recv_generator: mkdir %s failed",
1462 skipping_dir_contents:
1464 "*** Skipping any contents from this failed directory ***\n");
1466 file->flags |= FLAG_MISSING_DIR;
1470 #ifdef SUPPORT_XATTRS
1471 if (preserve_xattrs && statret == 1)
1472 copy_xattrs(fnamecmpbuf, fname);
1474 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1475 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1476 rprintf(code, "%s/\n", fname);
1478 /* We need to ensure that the dirs in the transfer have writable
1479 * permissions during the time we are putting files within them.
1480 * This is then fixed after the transfer is done. */
1482 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1483 mode_t mode = file->mode | S_IWUSR;
1484 if (do_chmod(fname, mode) < 0) {
1485 rsyserr(FERROR_XFER, errno,
1486 "failed to modify permissions on %s",
1489 need_retouch_dir_perms = 1;
1493 if (real_ret != 0 && one_file_system)
1494 real_sx.st.st_dev = filesystem_dev;
1496 if (one_file_system) {
1497 uint32 *devp = F_DIR_DEV_P(file);
1498 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1499 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1502 else if (delete_during && f_out != -1 && !phase
1503 && !(file->flags & FLAG_MISSING_DIR)) {
1504 if (file->flags & FLAG_CONTENT_DIR)
1505 delete_in_dir(fname, file, &real_sx.st.st_dev);
1507 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1512 /* If we're not preserving permissions, change the file-list's
1513 * mode based on the local permissions and some heuristics. */
1514 if (!preserve_perms) {
1515 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1516 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1520 #ifdef SUPPORT_HARD_LINKS
1521 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1522 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1526 if (preserve_links && S_ISLNK(file->mode)) {
1527 #ifdef SUPPORT_LINKS
1528 const char *sl = F_SYMLINK(file);
1529 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1530 if (INFO_GTE(NAME, 1)) {
1532 fname = f_name(file, NULL);
1534 "ignoring unsafe symlink %s -> \"%s\"\n",
1535 full_fname(fname), sl);
1540 char lnk[MAXPATHLEN];
1543 if (!S_ISLNK(sx.st.st_mode))
1545 else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1546 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1547 /* The link is pointing to the right place. */
1548 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1550 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1551 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1552 if (preserve_hard_links && F_IS_HLINKED(file))
1553 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1555 if (remove_source_files == 1)
1556 goto return_with_success;
1559 /* Not the right symlink (or not a symlink), so
1561 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1563 } else if (basis_dir[0] != NULL) {
1564 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1567 #ifndef CAN_HARDLINK_SYMLINK
1569 /* Resort to --copy-dest behavior. */
1579 #ifdef SUPPORT_HARD_LINKS
1580 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1581 cur_flist->in_progress++;
1585 if (do_symlink(sl, fname) != 0) {
1586 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1587 full_fname(fname), sl);
1589 set_file_attrs(fname, file, NULL, NULL, 0);
1591 itemize(fname, file, ndx, statret, &sx,
1592 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1594 if (code != FNONE && INFO_GTE(NAME, 1))
1595 rprintf(code, "%s -> %s\n", fname, sl);
1596 #ifdef SUPPORT_HARD_LINKS
1597 if (preserve_hard_links && F_IS_HLINKED(file))
1598 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1600 /* This does not check remove_source_files == 1
1601 * because this is one of the items that the old
1602 * --remove-sent-files option would remove. */
1603 if (remove_source_files)
1604 goto return_with_success;
1610 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1611 || (preserve_specials && IS_SPECIAL(file->mode))) {
1612 uint32 *devp = F_RDEV_P(file);
1613 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1616 if (IS_DEVICE(file->mode)) {
1617 if (!IS_DEVICE(sx.st.st_mode))
1619 del_for_flag = DEL_FOR_DEVICE;
1621 if (!IS_SPECIAL(sx.st.st_mode))
1623 del_for_flag = DEL_FOR_SPECIAL;
1626 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1627 && sx.st.st_rdev == rdev) {
1628 /* The device or special file is identical. */
1629 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1631 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1632 #ifdef SUPPORT_HARD_LINKS
1633 if (preserve_hard_links && F_IS_HLINKED(file))
1634 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1636 if (remove_source_files == 1)
1637 goto return_with_success;
1640 if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1642 } else if (basis_dir[0] != NULL) {
1643 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1646 #ifndef CAN_HARDLINK_SPECIAL
1648 /* Resort to --copy-dest behavior. */
1658 #ifdef SUPPORT_HARD_LINKS
1659 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1660 cur_flist->in_progress++;
1664 if (DEBUG_GTE(GENR, 1)) {
1665 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1666 fname, (int)file->mode,
1667 (long)major(rdev), (long)minor(rdev));
1669 if (do_mknod(fname, file->mode, rdev) < 0) {
1670 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1673 set_file_attrs(fname, file, NULL, NULL, 0);
1675 itemize(fname, file, ndx, statret, &sx,
1676 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1678 if (code != FNONE && INFO_GTE(NAME, 1))
1679 rprintf(code, "%s\n", fname);
1680 #ifdef SUPPORT_HARD_LINKS
1681 if (preserve_hard_links && F_IS_HLINKED(file))
1682 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1684 if (remove_source_files == 1)
1685 goto return_with_success;
1690 if (!S_ISREG(file->mode)) {
1692 fname = f_name(file, NULL);
1693 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1697 if (max_size > 0 && F_LENGTH(file) > max_size) {
1698 if (INFO_GTE(SKIP, 1)) {
1700 fname = f_name(file, NULL);
1701 rprintf(FINFO, "%s is over max-size\n", fname);
1705 if (min_size > 0 && F_LENGTH(file) < min_size) {
1706 if (INFO_GTE(SKIP, 1)) {
1708 fname = f_name(file, NULL);
1709 rprintf(FINFO, "%s is under min-size\n", fname);
1714 if (update_only > 0 && statret == 0
1715 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1716 if (INFO_GTE(SKIP, 1))
1717 rprintf(FINFO, "%s is newer\n", fname);
1718 #ifdef SUPPORT_HARD_LINKS
1719 if (F_IS_HLINKED(file))
1720 handle_skipped_hlink(file, itemizing, code, f_out);
1726 fnamecmp_type = FNAMECMP_FNAME;
1728 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1729 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1732 stat_errno = ENOENT;
1735 if (statret != 0 && basis_dir[0] != NULL) {
1736 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1739 if (remove_source_files == 1)
1740 goto return_with_success;
1744 fnamecmp = fnamecmpbuf;
1753 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1754 && link_stat(partialptr, &partial_st, 0) == 0
1755 && S_ISREG(partial_st.st_mode)) {
1757 goto prepare_to_open;
1761 if (statret != 0 && fuzzy_dirlist) {
1762 int j = find_fuzzy(file, fuzzy_dirlist);
1764 fuzzy_file = fuzzy_dirlist->files[j];
1765 f_name(fuzzy_file, fnamecmpbuf);
1766 if (DEBUG_GTE(FUZZY, 1)) {
1767 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1768 fname, fnamecmpbuf);
1770 sx.st.st_size = F_LENGTH(fuzzy_file);
1772 fnamecmp = fnamecmpbuf;
1773 fnamecmp_type = FNAMECMP_FUZZY;
1778 #ifdef SUPPORT_HARD_LINKS
1779 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1780 cur_flist->in_progress++;
1784 if (stat_errno == ENOENT)
1786 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1791 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1793 else if (fnamecmp_type == FNAMECMP_FUZZY)
1795 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1797 do_unlink(partialptr);
1798 handle_partial_dir(partialptr, PDIR_DELETE);
1800 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1802 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1803 #ifdef SUPPORT_HARD_LINKS
1804 if (preserve_hard_links && F_IS_HLINKED(file))
1805 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1807 if (remove_source_files != 1)
1809 return_with_success:
1811 send_msg_int(MSG_SUCCESS, ndx);
1815 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1816 #ifdef SUPPORT_HARD_LINKS
1817 if (F_IS_HLINKED(file))
1818 handle_skipped_hlink(file, itemizing, code, f_out);
1826 fnamecmp = partialptr;
1827 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1834 if (read_batch || whole_file) {
1835 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1836 if (!(backupptr = get_backup_name(fname)))
1838 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1839 goto pretend_missing;
1840 if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1841 unmake_file(back_file);
1849 if (fuzzy_dirlist) {
1850 int j = flist_find(fuzzy_dirlist, file);
1851 if (j >= 0) /* don't use changing file as future fuzzy basis */
1852 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1856 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1857 rsyserr(FERROR, errno, "failed to open %s, continuing",
1858 full_fname(fnamecmp));
1860 /* pretend the file didn't exist */
1861 #ifdef SUPPORT_HARD_LINKS
1862 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1863 cur_flist->in_progress++;
1867 statret = real_ret = -1;
1871 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1872 if (!(backupptr = get_backup_name(fname))) {
1876 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1878 goto pretend_missing;
1880 if (robust_unlink(backupptr) && errno != ENOENT) {
1881 rsyserr(FERROR_XFER, errno, "unlink %s",
1882 full_fname(backupptr));
1883 unmake_file(back_file);
1888 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1889 int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1890 if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1891 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1892 save_errno = errno ? errno : save_errno;
1897 rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1898 unmake_file(back_file);
1904 fnamecmp_type = FNAMECMP_BACKUP;
1907 if (DEBUG_GTE(DELTASUM, 3)) {
1908 rprintf(FINFO, "gen mapped %s of size %s\n",
1909 fnamecmp, big_num(sx.st.st_size, 0));
1912 if (DEBUG_GTE(DELTASUM, 2))
1913 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1916 if (remove_source_files && !delay_updates && !phase && !dry_run)
1917 increment_active_files(ndx, itemizing, code);
1918 if (inc_recurse && !dry_run)
1919 cur_flist->in_progress++;
1920 #ifdef SUPPORT_HARD_LINKS
1921 if (preserve_hard_links && F_IS_HLINKED(file))
1922 file->flags |= FLAG_FILE_SENT;
1924 write_ndx(f_out, ndx);
1926 int iflags = ITEM_TRANSFER;
1927 if (always_checksum > 0)
1928 iflags |= ITEM_REPORT_CHANGE;
1929 if (fnamecmp_type != FNAMECMP_FNAME)
1930 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1931 if (fnamecmp_type == FNAMECMP_FUZZY)
1932 iflags |= ITEM_XNAME_FOLLOWS;
1933 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1934 fuzzy_file ? fuzzy_file->basename : NULL);
1939 #ifdef SUPPORT_XATTRS
1940 if (preserve_xattrs)
1941 free_xattr(&real_sx);
1946 #ifdef SUPPORT_HARD_LINKS
1947 if (preserve_hard_links && F_IS_HLINKED(file))
1948 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1955 if (statret != 0 || whole_file)
1956 write_sum_head(f_out, NULL);
1957 else if (sx.st.st_size <= 0) {
1958 write_sum_head(f_out, NULL);
1961 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1963 "WARNING: file is too large for checksum sending: %s\n",
1965 write_sum_head(f_out, NULL);
1972 int save_preserve_xattrs = preserve_xattrs;
1975 #ifdef SUPPORT_XATTRS
1976 if (preserve_xattrs) {
1977 copy_xattrs(fname, backupptr);
1978 preserve_xattrs = 0;
1981 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1982 preserve_xattrs = save_preserve_xattrs;
1983 if (INFO_GTE(BACKUP, 1)) {
1984 rprintf(FINFO, "backed up %s to %s\n",
1987 unmake_file(back_file);
1994 #ifdef SUPPORT_XATTRS
1995 if (preserve_xattrs)
2001 #ifdef SUPPORT_HARD_LINKS
2002 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2003 enum logcode code, int f_out)
2005 char fbuf[MAXPATHLEN];
2007 struct file_list *save_flist = cur_flist;
2009 /* If we skip the last item in a chain of links and there was a
2010 * prior non-skipped hard-link waiting to finish, finish it now. */
2011 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2014 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2015 cur_flist->in_progress--; /* undo prior increment */
2017 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2019 cur_flist = save_flist;
2023 static void touch_up_dirs(struct file_list *flist, int ndx)
2025 static int counter = 0;
2026 struct file_struct *file;
2032 end = flist->used - 1;
2036 /* Fix any directory permissions that were modified during the
2037 * transfer and/or re-set any tweaked modified-time values. */
2038 for (i = start; i <= end; i++, counter++) {
2039 file = flist->files[i];
2040 if (!S_ISDIR(file->mode)
2041 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2043 if (DEBUG_GTE(TIME, 2)) {
2044 fname = f_name(file, NULL);
2045 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2048 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2049 || (!need_retouch_dir_times && file->mode & S_IWUSR))
2051 fname = f_name(file, NULL);
2052 if (!(file->mode & S_IWUSR))
2053 do_chmod(fname, file->mode);
2054 if (need_retouch_dir_times) {
2056 if (link_stat(fname, &st, 0) == 0
2057 && cmp_time(st.st_mtime, file->modtime) != 0)
2058 set_modtime(fname, file->modtime, file->mode);
2060 if (counter >= loopchk_limit) {
2062 maybe_send_keepalive();
2064 maybe_flush_socket(0);
2070 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2072 struct file_struct *file;
2073 struct file_list *flist;
2074 char fbuf[MAXPATHLEN];
2078 #ifdef SUPPORT_HARD_LINKS
2079 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2080 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2081 file = flist->files[ndx - flist->ndx_start];
2082 assert(file->flags & FLAG_HLINKED);
2083 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2084 flist->in_progress--;
2089 if (check_redo && (ndx = get_redo_num()) != -1) {
2090 csum_length = SUM_LENGTH;
2091 max_size = -max_size;
2092 min_size = -min_size;
2093 ignore_existing = -ignore_existing;
2094 ignore_non_existing = -ignore_non_existing;
2095 update_only = -update_only;
2096 always_checksum = -always_checksum;
2097 size_only = -size_only;
2098 append_mode = -append_mode;
2099 make_backups = -make_backups; /* avoid dup backup w/inplace */
2103 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2105 file = cur_flist->files[ndx - cur_flist->ndx_start];
2107 strlcpy(fbuf, solo_file, sizeof fbuf);
2110 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2111 cur_flist->to_redo--;
2115 csum_length = SHORT_SUM_LENGTH;
2116 max_size = -max_size;
2117 min_size = -min_size;
2118 ignore_existing = -ignore_existing;
2119 ignore_non_existing = -ignore_non_existing;
2120 update_only = -update_only;
2121 always_checksum = -always_checksum;
2122 size_only = -size_only;
2123 append_mode = -append_mode;
2124 make_backups = -make_backups;
2129 if (cur_flist == first_flist)
2132 /* We only get here if inc_recurse is enabled. */
2133 if (first_flist->in_progress || first_flist->to_redo)
2137 write_ndx(sock_f_out, NDX_DONE);
2138 maybe_flush_socket(1);
2141 if (delete_during == 2 || !dir_tweaking) {
2142 /* Skip directory touch-up. */
2143 } else if (first_flist->parent_ndx >= 0)
2144 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2146 flist_free(first_flist); /* updates first_flist */
2150 void generate_files(int f_out, const char *local_name)
2152 int i, ndx, next_loopchk = 0;
2153 char fbuf[MAXPATHLEN];
2156 int save_info_flist = info_levels[INFO_FLIST];
2157 int save_info_progress = info_levels[INFO_PROGRESS];
2159 if (protocol_version >= 29) {
2161 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2162 code = logfile_format_has_i ? FNONE : FLOG;
2163 } else if (am_daemon) {
2164 itemizing = logfile_format_has_i && do_xfers;
2165 maybe_ATTRS_REPORT = ATTRS_REPORT;
2166 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2167 } else if (!am_server) {
2168 itemizing = stdout_format_has_i;
2169 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2170 code = itemizing ? FNONE : FINFO;
2173 maybe_ATTRS_REPORT = ATTRS_REPORT;
2176 solo_file = local_name;
2177 dir_tweaking = !(list_only || solo_file || dry_run);
2178 need_retouch_dir_times = preserve_times > 1;
2179 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2180 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2181 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2182 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2184 if (DEBUG_GTE(GENR, 1))
2185 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2187 if (delete_before && !solo_file && cur_flist->used > 0)
2189 if (delete_during == 2) {
2190 deldelay_size = BIGPATHBUFLEN * 4;
2191 deldelay_buf = new_array(char, deldelay_size);
2193 out_of_memory("delete-delay");
2195 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2197 if (append_mode > 0 || whole_file < 0)
2199 if (DEBUG_GTE(FLIST, 1)) {
2200 rprintf(FINFO, "delta-transmission %s\n",
2202 ? "disabled for local transfer or --whole-file"
2206 /* Since we often fill up the outgoing socket and then just sit around
2207 * waiting for the other 2 processes to do their thing, we don't want
2208 * to exit on a timeout. If the data stops flowing, the receiver will
2209 * notice that and let us know via the redo pipe (or its closing). */
2212 dflt_perms = (ACCESSPERMS & ~orig_umask);
2215 #ifdef SUPPORT_HARD_LINKS
2216 if (preserve_hard_links && inc_recurse) {
2217 while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2218 wait_for_receiver();
2222 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2223 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2225 strlcpy(fbuf, solo_file, sizeof fbuf);
2228 ndx = cur_flist->ndx_start - 1;
2229 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2230 if (delete_during && dry_run < 2 && !list_only
2231 && !(fp->flags & FLAG_MISSING_DIR)) {
2232 if (fp->flags & FLAG_CONTENT_DIR) {
2234 if (one_file_system) {
2235 uint32 *devp = F_DIR_DEV_P(fp);
2236 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2238 dirdev = MAKEDEV(0, 0);
2239 /* We must be sure we've had a chance to receive an I/O
2240 * error for this directory before we delete in it. */
2241 while (check_for_io_err && !cur_flist->next)
2242 wait_for_receiver();
2243 delete_in_dir(fbuf, fp, &dirdev);
2245 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2248 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2249 struct file_struct *file = cur_flist->sorted[i];
2251 if (!F_IS_ACTIVE(file))
2257 ndx = i + cur_flist->ndx_start;
2260 strlcpy(fbuf, solo_file, sizeof fbuf);
2263 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2265 check_for_finished_files(itemizing, code, 0);
2267 if (i + cur_flist->ndx_start >= next_loopchk) {
2269 maybe_send_keepalive();
2271 maybe_flush_socket(0);
2272 next_loopchk += loopchk_limit;
2277 write_ndx(f_out, NDX_DONE);
2282 check_for_finished_files(itemizing, code, 1);
2283 if (cur_flist->next || flist_eof)
2285 wait_for_receiver();
2287 } while ((cur_flist = cur_flist->next) != NULL);
2290 delete_in_dir(NULL, NULL, &dev_zero);
2292 if (DEBUG_GTE(GENR, 1))
2293 rprintf(FINFO, "generate_files phase=%d\n", phase);
2296 check_for_finished_files(itemizing, code, 1);
2299 wait_for_receiver();
2303 if (DEBUG_GTE(GENR, 1))
2304 rprintf(FINFO, "generate_files phase=%d\n", phase);
2306 write_ndx(f_out, NDX_DONE);
2307 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2308 if (protocol_version >= 29 && !delay_updates)
2309 write_ndx(f_out, NDX_DONE);
2311 /* Read MSG_DONE for the redo phase (and any prior messages). */
2313 check_for_finished_files(itemizing, code, 0);
2314 if (msgdone_cnt > 1)
2316 wait_for_receiver();
2319 if (protocol_version >= 29) {
2321 if (DEBUG_GTE(GENR, 1))
2322 rprintf(FINFO, "generate_files phase=%d\n", phase);
2324 write_ndx(f_out, NDX_DONE);
2325 /* Read MSG_DONE for delay-updates phase & prior messages. */
2326 while (msgdone_cnt == 2)
2327 wait_for_receiver();
2330 info_levels[INFO_FLIST] = save_info_flist;
2331 info_levels[INFO_PROGRESS] = save_info_progress;
2333 if (delete_during == 2)
2334 do_delayed_deletions(fbuf);
2335 if (delete_after && !solo_file && file_total > 0)
2338 if ((need_retouch_dir_perms || need_retouch_dir_times)
2339 && dir_tweaking && (!inc_recurse || delete_during == 2))
2340 touch_up_dirs(dir_flist, -1);
2342 if (max_delete >= 0 && deletion_count > max_delete) {
2344 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2345 deletion_count - max_delete);
2346 io_error |= IOERR_DEL_LIMIT;
2349 if (DEBUG_GTE(GENR, 1))
2350 rprintf(FINFO, "generate_files finished\n");