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.
28 extern int stdout_format_has_i;
29 extern int logfile_format_has_i;
33 extern int inc_recurse;
34 extern int relative_paths;
35 extern int implied_dirs;
36 extern int keep_dirlinks;
37 extern int preserve_acls;
38 extern int preserve_xattrs;
39 extern int preserve_links;
40 extern int preserve_devices;
41 extern int preserve_specials;
42 extern int preserve_hard_links;
43 extern int preserve_executability;
44 extern int preserve_perms;
45 extern int preserve_times;
48 extern int delete_mode;
49 extern int delete_before;
50 extern int delete_during;
51 extern int delete_after;
52 extern int msgdone_cnt;
53 extern int ignore_errors;
54 extern int remove_source_files;
55 extern int delay_updates;
56 extern int update_only;
57 extern int human_readable;
58 extern int ignore_existing;
59 extern int ignore_non_existing;
61 extern int append_mode;
62 extern int make_backups;
63 extern int csum_length;
64 extern int ignore_times;
66 extern OFF_T max_size;
67 extern OFF_T min_size;
70 extern int allowed_lull;
71 extern int sock_f_out;
72 extern int ignore_timeout;
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 safe_symlinks;
86 extern long block_size; /* "long" because popt can't set an int32. */
87 extern int unsort_ndx;
88 extern int max_delete;
89 extern int force_delete;
90 extern int one_file_system;
91 extern struct stats stats;
92 extern dev_t filesystem_dev;
93 extern mode_t orig_umask;
95 extern char *backup_dir;
96 extern char *backup_suffix;
97 extern int backup_suffix_len;
98 extern char *basis_dir[MAX_BASIS_DIRS+1];
99 extern struct file_list *cur_flist, *first_flist, *dir_flist;
100 extern struct filter_list_struct daemon_filter_list;
102 int ignore_perishable = 0;
103 int non_perishable_cnt = 0;
104 int maybe_ATTRS_REPORT = 0;
106 static dev_t dev_zero;
107 static int skipped_deletes = 0;
108 static int deldelay_size = 0, deldelay_cnt = 0;
109 static char *deldelay_buf = NULL;
110 static int deldelay_fd = -1;
111 static int loopchk_limit;
112 static int dir_tweaking;
113 static int symlink_timeset_failed_flags;
114 static int need_retouch_dir_times;
115 static int need_retouch_dir_perms;
116 static const char *solo_file = NULL;
118 /* For calling delete_item() and delete_dir_contents(). */
119 #define DEL_NO_UID_WRITE (1<<0) /* file/dir has our uid w/o write perm */
120 #define DEL_RECURSE (1<<1) /* if dir, delete all contents */
121 #define DEL_DIR_IS_EMPTY (1<<2) /* internal delete_FUNCTIONS use only */
122 #define DEL_FOR_FILE (1<<3) /* making room for a replacement file */
123 #define DEL_FOR_DIR (1<<4) /* making room for a replacement dir */
124 #define DEL_FOR_SYMLINK (1<<5) /* making room for a replacement symlink */
125 #define DEL_FOR_DEVICE (1<<6) /* making room for a replacement device */
126 #define DEL_FOR_SPECIAL (1<<7) /* making room for a replacement special */
128 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
131 TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
135 DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
138 /* Forward declarations. */
139 static enum delret delete_dir_contents(char *fname, uint16 flags);
140 #ifdef SUPPORT_HARD_LINKS
141 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
142 enum logcode code, int f_out);
145 static int is_backup_file(char *fn)
147 int k = strlen(fn) - backup_suffix_len;
148 return k > 0 && strcmp(fn+k, backup_suffix) == 0;
151 /* Delete a file or directory. If DEL_RECURSE is set in the flags, this will
152 * delete recursively.
154 * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
155 * a directory! (The buffer is used for recursion, but returned unchanged.)
157 static enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
163 if (DEBUG_GTE(DEL, 2)) {
164 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
165 fbuf, (int)mode, (int)flags);
168 if (flags & DEL_NO_UID_WRITE)
169 do_chmod(fbuf, mode | S_IWUSR);
171 if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
172 int save_uid_ndx = uid_ndx;
173 /* This only happens on the first call to delete_item() since
174 * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
176 uid_ndx = ++file_extra_cnt;
177 ignore_perishable = 1;
178 /* If DEL_RECURSE is not set, this just reports emptiness. */
179 ret = delete_dir_contents(fbuf, flags);
180 ignore_perishable = 0;
185 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
187 /* OK: try to delete the directory. */
190 if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && stats.deleted_files >= max_delete) {
197 ok = do_rmdir(fbuf) == 0;
198 } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
199 what = "make_backup";
200 ok = make_backup(fbuf);
203 ok = robust_unlink(fbuf) == 0;
207 if (!(flags & DEL_MAKE_ROOM)) {
208 log_delete(fbuf, mode);
209 stats.deleted_files++;
211 /* Nothing more to count */
212 } else if (S_ISDIR(mode))
213 stats.deleted_dirs++;
215 else if (S_ISLNK(mode))
216 stats.deleted_symlinks++;
218 else if (IS_DEVICE(mode))
219 stats.deleted_symlinks++;
221 stats.deleted_specials++;
225 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
226 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
229 } else if (errno != ENOENT) {
230 rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
238 if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
240 switch (flags & DEL_MAKE_ROOM) {
241 case DEL_FOR_FILE: desc = "regular file"; break;
242 case DEL_FOR_DIR: desc = "directory"; break;
243 case DEL_FOR_SYMLINK: desc = "symlink"; break;
244 case DEL_FOR_DEVICE: desc = "device file"; break;
245 case DEL_FOR_SPECIAL: desc = "special file"; break;
246 default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
248 rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
254 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
255 * its contents, otherwise just checks for content. Returns DR_SUCCESS or
256 * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
257 * buffer is used for recursion, but returned unchanged.)
259 static enum delret delete_dir_contents(char *fname, uint16 flags)
261 struct file_list *dirlist;
268 if (DEBUG_GTE(DEL, 3)) {
269 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
273 dlen = strlen(fname);
274 save_filters = push_local_filters(fname, dlen);
276 non_perishable_cnt = 0;
277 dirlist = get_dirlist(fname, dlen, 0);
278 ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
283 if (!(flags & DEL_RECURSE)) {
289 if (dlen != 1 || *fname != '/')
291 remainder = MAXPATHLEN - (p - fname);
293 /* We do our own recursion, so make delete_item() non-recursive. */
294 flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
297 for (j = dirlist->used; j--; ) {
298 struct file_struct *fp = dirlist->files[j];
300 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
301 if (DEBUG_GTE(DEL, 1)) {
303 "mount point, %s, pins parent directory\n",
310 strlcpy(p, fp->basename, remainder);
311 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
312 do_chmod(fname, fp->mode | S_IWUSR);
313 /* Save stack by recursing to ourself directly. */
314 if (S_ISDIR(fp->mode)) {
315 if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
318 if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
326 pop_local_filters(save_filters);
328 if (ret == DR_NOT_EMPTY) {
329 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
335 static int start_delete_delay_temp(void)
337 char fnametmp[MAXPATHLEN];
338 int save_dry_run = dry_run;
341 if (!get_tmpname(fnametmp, "deldelay")
342 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
343 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
344 inc_recurse ? "" : " -- switching to --delete-after");
346 delete_after = !inc_recurse;
347 dry_run = save_dry_run;
351 dry_run = save_dry_run;
355 static int flush_delete_delay(void)
357 if (deldelay_fd < 0 && !start_delete_delay_temp())
359 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
360 rsyserr(FERROR, errno, "flush of delete-delay buffer");
362 delete_after = !inc_recurse;
370 static int remember_delete(struct file_struct *file, const char *fname, int flags)
374 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
377 if (flags & DEL_NO_UID_WRITE)
378 deldelay_buf[deldelay_cnt++] = '!';
381 len = snprintf(deldelay_buf + deldelay_cnt,
382 deldelay_size - deldelay_cnt,
384 (int)file->mode, fname, '\0');
385 if ((deldelay_cnt += len) <= deldelay_size)
388 if (!flush_delete_delay())
395 static int read_delay_line(char *buf, int *flags_p)
397 static int read_pos = 0;
399 char *bp, *past_space;
402 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
403 if (j < deldelay_cnt)
405 if (deldelay_fd < 0) {
410 deldelay_cnt -= read_pos;
411 if (deldelay_cnt == deldelay_size)
413 if (deldelay_cnt && read_pos) {
414 memmove(deldelay_buf, deldelay_buf + read_pos,
417 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
418 deldelay_size - deldelay_cnt);
422 "ERROR: unexpected EOF in delete-delay file.\n");
427 rsyserr(FERROR, errno,
428 "reading delete-delay file");
435 bp = deldelay_buf + read_pos;
438 *flags_p = DEL_NO_UID_WRITE;
442 if (sscanf(bp, "%x ", &mode) != 1) {
444 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
447 past_space = strchr(bp, ' ') + 1;
448 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
451 if (len > MAXPATHLEN) {
452 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
456 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
457 * instead of returning a pointer to our buffer. */
458 memcpy(buf, past_space, len);
463 static void do_delayed_deletions(char *delbuf)
467 if (deldelay_fd >= 0) {
468 if (deldelay_cnt && !flush_delete_delay())
470 lseek(deldelay_fd, 0, 0);
472 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
473 delete_item(delbuf, mode, flags | DEL_RECURSE);
474 if (deldelay_fd >= 0)
478 /* This function is used to implement per-directory deletion, and is used by
479 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
480 * MAXPATHLEN buffer with the name of the directory in it (the functions we
481 * call will append names onto the end, but the old dir value will be restored
483 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
485 static int already_warned = 0;
486 struct file_list *dirlist;
487 char delbuf[MAXPATHLEN];
489 int save_uid_ndx = uid_ndx;
492 change_local_filter_dir(NULL, 0, 0);
496 if (DEBUG_GTE(DEL, 2))
497 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
500 maybe_send_keepalive();
502 if (io_error && !ignore_errors) {
506 "IO error encountered -- skipping file deletion\n");
512 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
514 if (one_file_system) {
515 if (file->flags & FLAG_TOP_DIR)
516 filesystem_dev = *fs_dev;
517 else if (filesystem_dev != *fs_dev)
522 uid_ndx = ++file_extra_cnt;
524 dirlist = get_dirlist(fbuf, dlen, 0);
526 /* If an item in dirlist is not found in flist, delete it
527 * from the filesystem. */
528 for (i = dirlist->used; i--; ) {
529 struct file_struct *fp = dirlist->files[i];
530 if (!F_IS_ACTIVE(fp))
532 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
533 if (INFO_GTE(MOUNT, 1))
534 rprintf(FINFO, "cannot delete mount point: %s\n",
538 if (flist_find(cur_flist, fp) < 0) {
539 int flags = DEL_RECURSE;
540 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
541 flags |= DEL_NO_UID_WRITE;
543 if (delete_during == 2) {
544 if (!remember_delete(fp, delbuf, flags))
547 delete_item(delbuf, fp->mode, flags);
559 /* This deletes any files on the receiving side that are not present on the
560 * sending side. This is used by --delete-before and --delete-after. */
561 static void do_delete_pass(void)
563 char fbuf[MAXPATHLEN];
567 /* dry_run is incremented when the destination doesn't exist yet. */
568 if (dry_run > 1 || list_only)
571 for (j = 0; j < cur_flist->used; j++) {
572 struct file_struct *file = cur_flist->sorted[j];
576 if (!(file->flags & FLAG_CONTENT_DIR)) {
577 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
581 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
582 rprintf(FINFO, "deleting in %s\n", fbuf);
584 if (link_stat(fbuf, &st, keep_dirlinks) < 0
585 || !S_ISDIR(st.st_mode))
588 delete_in_dir(fbuf, file, &st.st_dev);
590 delete_in_dir(NULL, NULL, &dev_zero);
592 if (INFO_GTE(FLIST, 2) && !am_server)
593 rprintf(FINFO, " \r");
596 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
598 #if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
599 if (S_ISLNK(file->mode)) {
603 if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
606 if (preserve_perms) {
607 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
609 } else if (preserve_executability
610 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
613 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
616 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
620 if (preserve_acls && !S_ISLNK(file->mode)) {
621 if (!ACL_READY(*sxp))
623 if (set_acl(NULL, file, sxp) == 0)
627 #ifdef SUPPORT_XATTRS
628 if (preserve_xattrs) {
629 if (!XATTR_READY(*sxp))
630 get_xattr(fname, sxp);
631 if (xattr_diff(file, sxp, 0))
639 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
640 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
643 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
644 int keep_time = !preserve_times ? 0
645 : S_ISDIR(file->mode) ? preserve_times > 1 :
646 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
649 !S_ISLNK(file->mode);
652 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
653 iflags |= ITEM_REPORT_SIZE;
654 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
655 if (iflags & ITEM_LOCAL_CHANGE)
656 iflags |= symlink_timeset_failed_flags;
658 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
659 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
660 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
661 iflags |= ITEM_REPORT_TIME;
662 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
663 if (S_ISLNK(file->mode)) {
667 if (preserve_perms) {
668 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
669 iflags |= ITEM_REPORT_PERMS;
670 } else if (preserve_executability
671 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
672 iflags |= ITEM_REPORT_PERMS;
673 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
674 iflags |= ITEM_REPORT_OWNER;
675 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
676 && sxp->st.st_gid != (gid_t)F_GROUP(file))
677 iflags |= ITEM_REPORT_GROUP;
679 if (preserve_acls && !S_ISLNK(file->mode)) {
680 if (!ACL_READY(*sxp))
681 get_acl(fnamecmp, sxp);
682 if (set_acl(NULL, file, sxp) == 0)
683 iflags |= ITEM_REPORT_ACL;
686 #ifdef SUPPORT_XATTRS
687 if (preserve_xattrs) {
688 if (!XATTR_READY(*sxp))
689 get_xattr(fnamecmp, sxp);
690 if (xattr_diff(file, sxp, 1))
691 iflags |= ITEM_REPORT_XATTR;
695 #ifdef SUPPORT_XATTRS
696 if (preserve_xattrs && xattr_diff(file, NULL, 1))
697 iflags |= ITEM_REPORT_XATTR;
699 iflags |= ITEM_IS_NEW;
703 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
704 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
705 if (protocol_version >= 29) {
707 write_ndx(sock_f_out, ndx);
708 write_shortint(sock_f_out, iflags);
709 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
710 write_byte(sock_f_out, fnamecmp_type);
711 if (iflags & ITEM_XNAME_FOLLOWS)
712 write_vstring(sock_f_out, xname, strlen(xname));
713 #ifdef SUPPORT_XATTRS
714 if (preserve_xattrs && !dry_run
715 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
716 send_xattr_request(NULL, file,
717 iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
720 } else if (ndx >= 0) {
721 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
722 log_item(code, file, &stats, iflags, xname);
728 /* Perform our quick-check heuristic for determining if a file is unchanged. */
729 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
731 if (st->st_size != F_LENGTH(file))
734 /* if always checksum is set then we use the checksum instead
735 of the file time to determine whether to sync */
736 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
737 char sum[MAX_DIGEST_LEN];
738 file_checksum(fn, sum, st->st_size);
739 return memcmp(sum, F_SUM(file), checksum_len) == 0;
748 return cmp_time(st->st_mtime, file->modtime) == 0;
753 * set (initialize) the size entries in the per-file sum_struct
754 * calculating dynamic block and checksum sizes.
756 * This is only called from generate_and_send_sums() but is a separate
757 * function to encapsulate the logic.
759 * The block size is a rounded square root of file length.
761 * The checksum size is determined according to:
762 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
763 * provided by Donovan Baarda which gives a probability of rsync
764 * algorithm corrupting data and falling back using the whole md4
767 * This might be made one of several selectable heuristics.
769 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
776 blength = block_size;
777 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
778 blength = BLOCK_SIZE;
780 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
783 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
784 if (c < 0 || c >= max_blength)
785 blength = max_blength;
790 if (len < (int64)blength * blength)
793 } while (c >= 8); /* round to multiple of 8 */
794 blength = MAX(blength, BLOCK_SIZE);
798 if (protocol_version < 27) {
799 s2length = csum_length;
800 } else if (csum_length == SUM_LENGTH) {
801 s2length = SUM_LENGTH;
804 int b = BLOCKSUM_BIAS;
805 for (l = len; l >>= 1; b += 2) {}
806 for (c = blength; (c >>= 1) && b; b--) {}
807 /* add a bit, subtract rollsum, round up. */
808 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
809 s2length = MAX(s2length, csum_length);
810 s2length = MIN(s2length, SUM_LENGTH);
814 sum->blength = blength;
815 sum->s2length = s2length;
816 sum->remainder = (int32)(len % blength);
817 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
819 if ((int64)sum->count != l)
822 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
824 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
825 big_num(sum->count), (long)sum->remainder, (long)sum->blength,
826 sum->s2length, big_num(sum->flength));
832 * Generate and send a stream of signatures/checksums that describe a buffer
834 * Generate approximately one checksum every block_len bytes.
836 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
839 struct map_struct *mapbuf;
840 struct sum_struct sum;
843 sum_sizes_sqroot(&sum, len);
846 write_sum_head(f_out, &sum);
848 if (append_mode > 0 && f_copy < 0)
852 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
856 for (i = 0; i < sum.count; i++) {
857 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
858 char *map = map_ptr(mapbuf, offset, n1);
859 char sum2[SUM_LENGTH];
866 full_write(f_copy, map, n1);
871 sum1 = get_checksum1(map, n1);
872 get_checksum2(map, n1, sum2);
874 if (DEBUG_GTE(DELTASUM, 3)) {
876 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
877 big_num(i), big_num(offset - n1), (long)n1,
878 (unsigned long)sum1);
880 write_int(f_out, sum1);
881 write_buf(f_out, sum2, sum.s2length);
891 /* Try to find a filename in the same dir as "fname" with a similar name. */
892 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
894 int fname_len, fname_suf_len;
895 const char *fname_suf, *fname = file->basename;
896 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
897 int j, lowest_j = -1;
899 fname_len = strlen(fname);
900 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
902 for (j = 0; j < dirlist->used; j++) {
903 struct file_struct *fp = dirlist->files[j];
904 const char *suf, *name;
908 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
909 || fp->flags & FLAG_FILE_SENT)
914 if (F_LENGTH(fp) == F_LENGTH(file)
915 && cmp_time(fp->modtime, file->modtime) == 0) {
916 if (DEBUG_GTE(FUZZY, 2)) {
918 "fuzzy size/modtime match for %s\n",
925 suf = find_filename_suffix(name, len, &suf_len);
927 dist = fuzzy_distance(name, len, fname, fname_len);
928 /* Add some extra weight to how well the suffixes match. */
929 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
931 if (DEBUG_GTE(FUZZY, 2)) {
932 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
933 name, (int)(dist>>16), (int)(dist&0xFFFF));
935 if (dist <= lowest_dist) {
944 /* Copy a file found in our --copy-dest handling. */
945 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
947 char buf[MAXPATHLEN];
948 const char *copy_to, *partialptr;
949 int save_preserve_xattrs = preserve_xattrs;
953 /* Let copy_file open the destination in place. */
957 fd_w = open_tmpfile(buf, dest, file);
962 cleanup_set(copy_to, NULL, NULL, -1, -1);
963 if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
964 if (INFO_GTE(COPY, 1)) {
965 rsyserr(FINFO, errno, "copy_file %s => %s",
966 full_fname(src), copy_to);
968 /* Try to clean up. */
973 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
974 preserve_xattrs = 0; /* xattrs were copied with file */
975 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
976 preserve_xattrs = save_preserve_xattrs;
981 /* This is only called for regular files. We return -2 if we've finished
982 * handling the file, -1 if no dest-linking occurred, or a non-negative
983 * value if we found an alternate basis file. */
984 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
985 char *cmpbuf, stat_x *sxp, int itemizing,
993 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
994 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
996 switch (match_level) {
1002 if (!unchanged_file(cmpbuf, file, &sxp->st))
1008 if (!unchanged_attrs(cmpbuf, file, sxp))
1015 } while (basis_dir[++j] != NULL);
1020 if (j != best_match) {
1022 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1023 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1027 if (match_level == 3 && !copy_dest) {
1028 #ifdef SUPPORT_HARD_LINKS
1030 if (!hard_link_one(file, fname, cmpbuf, 1))
1032 if (preserve_hard_links && F_IS_HLINKED(file))
1033 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1034 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1035 itemize(cmpbuf, file, ndx, 1, sxp,
1036 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1042 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1043 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
1044 rprintf(FCLIENT, "%s is uptodate\n", fname);
1048 if (match_level >= 2) {
1049 #ifdef SUPPORT_HARD_LINKS
1050 try_a_copy: /* Copy the file locally. */
1052 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1055 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1056 if (maybe_ATTRS_REPORT
1057 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
1058 || (INFO_GTE(NAME, 2) && match_level == 3))) {
1059 code = match_level == 3 ? FCLIENT : FINFO;
1060 rprintf(code, "%s%s\n", fname,
1061 match_level == 3 ? " is uptodate" : "");
1063 #ifdef SUPPORT_HARD_LINKS
1064 if (preserve_hard_links && F_IS_HLINKED(file))
1065 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1070 return FNAMECMP_BASIS_DIR_LOW + j;
1073 /* This is only called for non-regular files. We return -2 if we've finished
1074 * handling the file, or -1 if no dest-linking occurred, or a non-negative
1075 * value if we found an alternate basis file. */
1076 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1077 char *cmpbuf, stat_x *sxp, int itemizing,
1080 char lnk[MAXPATHLEN];
1081 int best_match = -1;
1082 int match_level = 0;
1083 enum nonregtype type;
1087 #ifndef SUPPORT_LINKS
1088 if (S_ISLNK(file->mode))
1091 if (S_ISDIR(file->mode)) {
1093 } else if (IS_SPECIAL(file->mode))
1094 type = TYPE_SPECIAL;
1095 else if (IS_DEVICE(file->mode))
1097 #ifdef SUPPORT_LINKS
1098 else if (S_ISLNK(file->mode))
1099 type = TYPE_SYMLINK;
1103 "internal: try_dests_non() called with invalid mode (%o)\n",
1105 exit_cleanup(RERR_UNSUPPORTED);
1109 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1110 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1114 if (!S_ISDIR(sxp->st.st_mode))
1118 if (!IS_SPECIAL(sxp->st.st_mode))
1122 if (!IS_DEVICE(sxp->st.st_mode))
1125 #ifdef SUPPORT_LINKS
1127 if (!S_ISLNK(sxp->st.st_mode))
1132 if (match_level < 1) {
1141 devp = F_RDEV_P(file);
1142 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1145 #ifdef SUPPORT_LINKS
1147 if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1150 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1155 if (match_level < 2) {
1159 if (unchanged_attrs(cmpbuf, file, sxp)) {
1164 } while (basis_dir[++j] != NULL);
1169 if (j != best_match) {
1171 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1172 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1176 if (match_level == 3) {
1177 #ifdef SUPPORT_HARD_LINKS
1179 #ifndef CAN_HARDLINK_SYMLINK
1180 && !S_ISLNK(file->mode)
1182 #ifndef CAN_HARDLINK_SPECIAL
1183 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1185 && !S_ISDIR(file->mode)) {
1186 if (do_link(cmpbuf, fname) < 0) {
1187 rsyserr(FERROR_XFER, errno,
1188 "failed to hard-link %s with %s",
1192 if (preserve_hard_links && F_IS_HLINKED(file))
1193 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1197 if (itemizing && stdout_format_has_i
1198 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1199 int chg = compare_dest && type != TYPE_DIR ? 0
1200 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1201 char *lp = match_level == 3 ? "" : NULL;
1202 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1204 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1205 rprintf(FCLIENT, "%s%s is uptodate\n",
1206 fname, type == TYPE_DIR ? "/" : "");
1214 static void list_file_entry(struct file_struct *f)
1216 char permbuf[PERMSTRING_SIZE];
1218 int colwidth = human_readable ? 14 : 11;
1220 if (!F_IS_ACTIVE(f)) {
1221 /* this can happen if duplicate names were removed */
1225 permstring(permbuf, f->mode);
1228 /* TODO: indicate '+' if the entry has an ACL. */
1230 #ifdef SUPPORT_LINKS
1231 if (preserve_links && S_ISLNK(f->mode)) {
1232 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1233 permbuf, colwidth, comma_num(len),
1234 timestring(f->modtime), f_name(f, NULL),
1239 rprintf(FINFO, "%s %*s %s %s\n",
1240 permbuf, colwidth, comma_num(len),
1241 timestring(f->modtime), f_name(f, NULL));
1245 static int phase = 0;
1246 static int dflt_perms;
1248 static int implied_dirs_are_missing;
1249 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1250 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1252 return F_DEPTH(file) > F_DEPTH(subtree)
1253 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1256 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1257 * make sure it exists, and has the right permissions/timestamp info. For
1258 * all other non-regular files (symlinks, etc.) we create them here. For
1259 * regular files that have changed, we try to find a basis file and then
1260 * start sending checksums. The ndx is the file's unique index value.
1262 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1263 * passed to delete_item(), which can use it during a recursive delete.)
1265 * Note that f_out is set to -1 when doing final directory-permission and
1266 * modification-time repair. */
1267 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1268 int itemizing, enum logcode code, int f_out)
1270 static const char *parent_dirname = "";
1271 /* Missing dir not created due to --dry-run; will still be scanned. */
1272 static struct file_struct *dry_missing_dir = NULL;
1273 /* Missing dir whose contents are skipped altogether due to
1274 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1275 static struct file_struct *skip_dir = NULL;
1276 static struct file_list *fuzzy_dirlist = NULL;
1277 static int need_fuzzy_dirlist = 0;
1278 struct file_struct *fuzzy_file = NULL;
1279 int fd = -1, f_copy = -1;
1281 STRUCT_STAT partial_st;
1282 struct file_struct *back_file = NULL;
1283 int statret, real_ret, stat_errno;
1284 char *fnamecmp, *partialptr, *backupptr = NULL;
1285 char fnamecmpbuf[MAXPATHLEN];
1286 uchar fnamecmp_type;
1287 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1288 int is_dir = !S_ISDIR(file->mode) ? 0
1289 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1292 if (DEBUG_GTE(GENR, 1))
1293 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1297 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1299 list_file_entry(file);
1304 if (is_below(file, skip_dir)) {
1306 file->flags |= FLAG_MISSING_DIR;
1307 #ifdef SUPPORT_HARD_LINKS
1308 else if (F_IS_HLINKED(file))
1309 handle_skipped_hlink(file, itemizing, code, f_out);
1316 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1317 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1320 #ifdef SUPPORT_HARD_LINKS
1321 if (F_IS_HLINKED(file))
1322 handle_skipped_hlink(file, itemizing, code, f_out);
1324 rprintf(FERROR_XFER,
1325 "skipping daemon-excluded %s \"%s\"\n",
1326 is_dir ? "directory" : "file", fname);
1328 goto skipping_dir_contents;
1334 sx.acc_acl = sx.def_acl = NULL;
1336 #ifdef SUPPORT_XATTRS
1339 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1340 parent_is_dry_missing:
1341 if (fuzzy_dirlist) {
1342 flist_free(fuzzy_dirlist);
1343 fuzzy_dirlist = NULL;
1345 parent_dirname = "";
1347 stat_errno = ENOENT;
1349 const char *dn = file->dirname ? file->dirname : ".";
1350 dry_missing_dir = NULL;
1351 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1352 if (relative_paths && !implied_dirs
1353 && do_stat(dn, &sx.st) < 0) {
1355 goto parent_is_dry_missing;
1356 if (create_directory_path(fname) < 0) {
1357 rsyserr(FERROR_XFER, errno,
1358 "recv_generator: mkdir %s failed",
1362 if (fuzzy_dirlist) {
1363 flist_free(fuzzy_dirlist);
1364 fuzzy_dirlist = NULL;
1367 need_fuzzy_dirlist = 1;
1369 if (!preserve_perms)
1370 dflt_perms = default_perms_for_dir(dn);
1373 parent_dirname = dn;
1375 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1376 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1377 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1378 need_fuzzy_dirlist = 0;
1381 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1385 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1390 file->flags |= FLAG_MISSING_DIR;
1392 #ifdef SUPPORT_HARD_LINKS
1393 else if (F_IS_HLINKED(file))
1394 handle_skipped_hlink(file, itemizing, code, f_out);
1396 if (INFO_GTE(SKIP, 1)) {
1397 rprintf(FINFO, "not creating new %s \"%s\"\n",
1398 is_dir ? "directory" : "file", fname);
1403 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1404 && !am_root && sx.st.st_uid == our_uid)
1405 del_opts |= DEL_NO_UID_WRITE;
1407 if (ignore_existing > 0 && statret == 0
1408 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1409 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1410 rprintf(FINFO, "%s exists\n", fname);
1411 #ifdef SUPPORT_HARD_LINKS
1412 if (F_IS_HLINKED(file))
1413 handle_skipped_hlink(file, itemizing, code, f_out);
1419 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1422 /* In inc_recurse mode we want to make sure any missing
1423 * directories get created while we're still processing
1424 * the parent dir (which allows us to touch the parent
1425 * dir's mtime right away). We will handle the dir in
1426 * full later (right before we handle its contents). */
1428 && (S_ISDIR(sx.st.st_mode)
1429 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1430 goto cleanup; /* Any errors get reported later. */
1431 if (do_mkdir(fname, file->mode & 0700) == 0)
1432 file->flags |= FLAG_DIR_CREATED;
1435 /* The file to be received is a directory, so we need
1436 * to prepare appropriately. If there is already a
1437 * file of that name and it is *not* a directory, then
1438 * we need to delete it. If it doesn't exist, then
1439 * (perhaps recursively) create it. */
1440 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1441 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1442 goto skipping_dir_contents;
1445 if (dry_run && statret != 0) {
1446 if (!dry_missing_dir)
1447 dry_missing_dir = file;
1448 file->flags |= FLAG_MISSING_DIR;
1452 if (file->flags & FLAG_DIR_CREATED)
1454 if (!preserve_perms) { /* See comment in non-dir code below. */
1455 file->mode = dest_mode(file->mode, sx.st.st_mode,
1456 dflt_perms, statret == 0);
1458 if (statret != 0 && basis_dir[0] != NULL) {
1459 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1468 if (itemizing && f_out != -1) {
1469 itemize(fname, file, ndx, statret, &sx,
1470 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1472 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1473 if (!relative_paths || errno != ENOENT
1474 || create_directory_path(fname) < 0
1475 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1476 rsyserr(FERROR_XFER, errno,
1477 "recv_generator: mkdir %s failed",
1479 skipping_dir_contents:
1481 "*** Skipping any contents from this failed directory ***\n");
1483 file->flags |= FLAG_MISSING_DIR;
1487 #ifdef SUPPORT_XATTRS
1488 if (preserve_xattrs && statret == 1)
1489 copy_xattrs(fnamecmpbuf, fname);
1491 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1492 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1493 rprintf(code, "%s/\n", fname);
1495 /* We need to ensure that the dirs in the transfer have writable
1496 * permissions during the time we are putting files within them.
1497 * This is then fixed after the transfer is done. */
1499 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1500 mode_t mode = file->mode | S_IWUSR;
1501 if (do_chmod(fname, mode) < 0) {
1502 rsyserr(FERROR_XFER, errno,
1503 "failed to modify permissions on %s",
1506 need_retouch_dir_perms = 1;
1510 if (real_ret != 0 && one_file_system)
1511 real_sx.st.st_dev = filesystem_dev;
1513 if (one_file_system) {
1514 uint32 *devp = F_DIR_DEV_P(file);
1515 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1516 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1519 else if (delete_during && f_out != -1 && !phase
1520 && !(file->flags & FLAG_MISSING_DIR)) {
1521 if (file->flags & FLAG_CONTENT_DIR)
1522 delete_in_dir(fname, file, &real_sx.st.st_dev);
1524 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1529 /* If we're not preserving permissions, change the file-list's
1530 * mode based on the local permissions and some heuristics. */
1531 if (!preserve_perms) {
1532 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1533 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1537 #ifdef SUPPORT_HARD_LINKS
1538 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1539 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1543 if (preserve_links && S_ISLNK(file->mode)) {
1544 #ifdef SUPPORT_LINKS
1545 const char *sl = F_SYMLINK(file);
1546 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1547 if (INFO_GTE(NAME, 1)) {
1549 fname = f_name(file, NULL);
1551 "ignoring unsafe symlink %s -> \"%s\"\n",
1552 full_fname(fname), sl);
1557 char lnk[MAXPATHLEN];
1560 if (!S_ISLNK(sx.st.st_mode))
1562 else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1563 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1564 /* The link is pointing to the right place. */
1565 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1567 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1568 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1569 if (preserve_hard_links && F_IS_HLINKED(file))
1570 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1572 if (remove_source_files == 1)
1573 goto return_with_success;
1576 /* Not the right symlink (or not a symlink), so
1578 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1580 } else if (basis_dir[0] != NULL) {
1581 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1584 #ifndef CAN_HARDLINK_SYMLINK
1586 /* Resort to --copy-dest behavior. */
1596 #ifdef SUPPORT_HARD_LINKS
1597 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1598 cur_flist->in_progress++;
1602 if (do_symlink(sl, fname) != 0) {
1603 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1604 full_fname(fname), sl);
1606 set_file_attrs(fname, file, NULL, NULL, 0);
1608 itemize(fname, file, ndx, statret, &sx,
1609 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1611 if (code != FNONE && INFO_GTE(NAME, 1))
1612 rprintf(code, "%s -> %s\n", fname, sl);
1613 #ifdef SUPPORT_HARD_LINKS
1614 if (preserve_hard_links && F_IS_HLINKED(file))
1615 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1617 /* This does not check remove_source_files == 1
1618 * because this is one of the items that the old
1619 * --remove-sent-files option would remove. */
1620 if (remove_source_files)
1621 goto return_with_success;
1627 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1628 || (preserve_specials && IS_SPECIAL(file->mode))) {
1629 uint32 *devp = F_RDEV_P(file);
1630 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1633 if (IS_DEVICE(file->mode)) {
1634 if (!IS_DEVICE(sx.st.st_mode))
1636 del_for_flag = DEL_FOR_DEVICE;
1638 if (!IS_SPECIAL(sx.st.st_mode))
1640 del_for_flag = DEL_FOR_SPECIAL;
1643 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1644 && sx.st.st_rdev == rdev) {
1645 /* The device or special file is identical. */
1646 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1648 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1649 #ifdef SUPPORT_HARD_LINKS
1650 if (preserve_hard_links && F_IS_HLINKED(file))
1651 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1653 if (remove_source_files == 1)
1654 goto return_with_success;
1657 if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1659 } else if (basis_dir[0] != NULL) {
1660 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1663 #ifndef CAN_HARDLINK_SPECIAL
1665 /* Resort to --copy-dest behavior. */
1675 #ifdef SUPPORT_HARD_LINKS
1676 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1677 cur_flist->in_progress++;
1681 if (DEBUG_GTE(GENR, 1)) {
1682 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1683 fname, (int)file->mode,
1684 (long)major(rdev), (long)minor(rdev));
1686 if (do_mknod(fname, file->mode, rdev) < 0) {
1687 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1690 set_file_attrs(fname, file, NULL, NULL, 0);
1692 itemize(fname, file, ndx, statret, &sx,
1693 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1695 if (code != FNONE && INFO_GTE(NAME, 1))
1696 rprintf(code, "%s\n", fname);
1697 #ifdef SUPPORT_HARD_LINKS
1698 if (preserve_hard_links && F_IS_HLINKED(file))
1699 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1701 if (remove_source_files == 1)
1702 goto return_with_success;
1707 if (!S_ISREG(file->mode)) {
1709 fname = f_name(file, NULL);
1710 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1714 if (max_size > 0 && F_LENGTH(file) > max_size) {
1715 if (INFO_GTE(SKIP, 1)) {
1717 fname = f_name(file, NULL);
1718 rprintf(FINFO, "%s is over max-size\n", fname);
1722 if (min_size > 0 && F_LENGTH(file) < min_size) {
1723 if (INFO_GTE(SKIP, 1)) {
1725 fname = f_name(file, NULL);
1726 rprintf(FINFO, "%s is under min-size\n", fname);
1731 if (update_only > 0 && statret == 0
1732 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1733 if (INFO_GTE(SKIP, 1))
1734 rprintf(FINFO, "%s is newer\n", fname);
1735 #ifdef SUPPORT_HARD_LINKS
1736 if (F_IS_HLINKED(file))
1737 handle_skipped_hlink(file, itemizing, code, f_out);
1743 fnamecmp_type = FNAMECMP_FNAME;
1745 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1746 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1749 stat_errno = ENOENT;
1752 if (statret != 0 && basis_dir[0] != NULL) {
1753 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1756 if (remove_source_files == 1)
1757 goto return_with_success;
1761 fnamecmp = fnamecmpbuf;
1770 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1771 && link_stat(partialptr, &partial_st, 0) == 0
1772 && S_ISREG(partial_st.st_mode)) {
1774 goto prepare_to_open;
1778 if (statret != 0 && fuzzy_dirlist) {
1779 int j = find_fuzzy(file, fuzzy_dirlist);
1781 fuzzy_file = fuzzy_dirlist->files[j];
1782 f_name(fuzzy_file, fnamecmpbuf);
1783 if (DEBUG_GTE(FUZZY, 1)) {
1784 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1785 fname, fnamecmpbuf);
1787 sx.st.st_size = F_LENGTH(fuzzy_file);
1789 fnamecmp = fnamecmpbuf;
1790 fnamecmp_type = FNAMECMP_FUZZY;
1795 #ifdef SUPPORT_HARD_LINKS
1796 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1797 cur_flist->in_progress++;
1801 if (stat_errno == ENOENT)
1803 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1808 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1810 else if (fnamecmp_type == FNAMECMP_FUZZY)
1812 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1814 do_unlink(partialptr);
1815 handle_partial_dir(partialptr, PDIR_DELETE);
1817 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1819 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1820 #ifdef SUPPORT_HARD_LINKS
1821 if (preserve_hard_links && F_IS_HLINKED(file))
1822 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1824 if (remove_source_files != 1)
1826 return_with_success:
1828 send_msg_int(MSG_SUCCESS, ndx);
1832 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1833 #ifdef SUPPORT_HARD_LINKS
1834 if (F_IS_HLINKED(file))
1835 handle_skipped_hlink(file, itemizing, code, f_out);
1843 fnamecmp = partialptr;
1844 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1851 if (read_batch || whole_file) {
1852 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1853 if (!(backupptr = get_backup_name(fname)))
1855 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1856 goto pretend_missing;
1857 if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1858 unmake_file(back_file);
1866 if (fuzzy_dirlist) {
1867 int j = flist_find(fuzzy_dirlist, file);
1868 if (j >= 0) /* don't use changing file as future fuzzy basis */
1869 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1873 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1874 rsyserr(FERROR, errno, "failed to open %s, continuing",
1875 full_fname(fnamecmp));
1877 /* pretend the file didn't exist */
1878 #ifdef SUPPORT_HARD_LINKS
1879 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1880 cur_flist->in_progress++;
1884 statret = real_ret = -1;
1888 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1889 if (!(backupptr = get_backup_name(fname))) {
1893 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1895 goto pretend_missing;
1897 if (robust_unlink(backupptr) && errno != ENOENT) {
1898 rsyserr(FERROR_XFER, errno, "unlink %s",
1899 full_fname(backupptr));
1900 unmake_file(back_file);
1905 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1906 int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1907 if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1908 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1909 save_errno = errno ? errno : save_errno;
1914 rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1915 unmake_file(back_file);
1921 fnamecmp_type = FNAMECMP_BACKUP;
1924 if (DEBUG_GTE(DELTASUM, 3)) {
1925 rprintf(FINFO, "gen mapped %s of size %s\n",
1926 fnamecmp, big_num(sx.st.st_size));
1929 if (DEBUG_GTE(DELTASUM, 2))
1930 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1933 if (remove_source_files && !delay_updates && !phase && !dry_run)
1934 increment_active_files(ndx, itemizing, code);
1935 if (inc_recurse && !dry_run)
1936 cur_flist->in_progress++;
1937 #ifdef SUPPORT_HARD_LINKS
1938 if (preserve_hard_links && F_IS_HLINKED(file))
1939 file->flags |= FLAG_FILE_SENT;
1941 write_ndx(f_out, ndx);
1943 int iflags = ITEM_TRANSFER;
1944 if (always_checksum > 0)
1945 iflags |= ITEM_REPORT_CHANGE;
1946 if (fnamecmp_type != FNAMECMP_FNAME)
1947 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1948 if (fnamecmp_type == FNAMECMP_FUZZY)
1949 iflags |= ITEM_XNAME_FOLLOWS;
1950 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1951 fuzzy_file ? fuzzy_file->basename : NULL);
1956 #ifdef SUPPORT_XATTRS
1957 if (preserve_xattrs)
1958 free_xattr(&real_sx);
1963 #ifdef SUPPORT_HARD_LINKS
1964 if (preserve_hard_links && F_IS_HLINKED(file))
1965 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1972 if (statret != 0 || whole_file)
1973 write_sum_head(f_out, NULL);
1974 else if (sx.st.st_size <= 0) {
1975 write_sum_head(f_out, NULL);
1978 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1980 "WARNING: file is too large for checksum sending: %s\n",
1982 write_sum_head(f_out, NULL);
1989 int save_preserve_xattrs = preserve_xattrs;
1992 #ifdef SUPPORT_XATTRS
1993 if (preserve_xattrs) {
1994 copy_xattrs(fname, backupptr);
1995 preserve_xattrs = 0;
1998 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1999 preserve_xattrs = save_preserve_xattrs;
2000 if (INFO_GTE(BACKUP, 1)) {
2001 rprintf(FINFO, "backed up %s to %s\n",
2004 unmake_file(back_file);
2011 #ifdef SUPPORT_XATTRS
2012 if (preserve_xattrs)
2018 #ifdef SUPPORT_HARD_LINKS
2019 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2020 enum logcode code, int f_out)
2022 char fbuf[MAXPATHLEN];
2024 struct file_list *save_flist = cur_flist;
2026 /* If we skip the last item in a chain of links and there was a
2027 * prior non-skipped hard-link waiting to finish, finish it now. */
2028 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2031 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2032 cur_flist->in_progress--; /* undo prior increment */
2034 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2036 cur_flist = save_flist;
2040 static void touch_up_dirs(struct file_list *flist, int ndx)
2042 static int counter = 0;
2043 struct file_struct *file;
2049 end = flist->used - 1;
2053 /* Fix any directory permissions that were modified during the
2054 * transfer and/or re-set any tweaked modified-time values. */
2055 for (i = start; i <= end; i++, counter++) {
2056 file = flist->files[i];
2057 if (!S_ISDIR(file->mode)
2058 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2060 if (DEBUG_GTE(TIME, 2)) {
2061 fname = f_name(file, NULL);
2062 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2065 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2066 || (!need_retouch_dir_times && file->mode & S_IWUSR))
2068 fname = f_name(file, NULL);
2069 if (!(file->mode & S_IWUSR))
2070 do_chmod(fname, file->mode);
2071 if (need_retouch_dir_times) {
2073 if (link_stat(fname, &st, 0) == 0
2074 && cmp_time(st.st_mtime, file->modtime) != 0)
2075 set_modtime(fname, file->modtime, file->mode);
2077 if (counter >= loopchk_limit) {
2079 maybe_send_keepalive();
2081 maybe_flush_socket(0);
2087 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2089 struct file_struct *file;
2090 struct file_list *flist;
2091 char fbuf[MAXPATHLEN];
2095 #ifdef SUPPORT_HARD_LINKS
2096 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2097 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2098 file = flist->files[ndx - flist->ndx_start];
2099 assert(file->flags & FLAG_HLINKED);
2100 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2101 flist->in_progress--;
2106 if (check_redo && (ndx = get_redo_num()) != -1) {
2107 csum_length = SUM_LENGTH;
2108 max_size = -max_size;
2109 min_size = -min_size;
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 = -max_size;
2134 min_size = -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)
2154 write_ndx(sock_f_out, NDX_DONE);
2155 maybe_flush_socket(1);
2158 if (delete_during == 2 || !dir_tweaking) {
2159 /* Skip directory touch-up. */
2160 } else if (first_flist->parent_ndx >= 0)
2161 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2163 flist_free(first_flist); /* updates first_flist */
2167 void generate_files(int f_out, const char *local_name)
2169 int i, ndx, next_loopchk = 0;
2170 char fbuf[MAXPATHLEN];
2173 int save_info_flist = info_levels[INFO_FLIST];
2174 int save_info_progress = info_levels[INFO_PROGRESS];
2176 if (protocol_version >= 29) {
2178 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2179 code = logfile_format_has_i ? FNONE : FLOG;
2180 } else if (am_daemon) {
2181 itemizing = logfile_format_has_i && do_xfers;
2182 maybe_ATTRS_REPORT = ATTRS_REPORT;
2183 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2184 } else if (!am_server) {
2185 itemizing = stdout_format_has_i;
2186 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2187 code = itemizing ? FNONE : FINFO;
2190 maybe_ATTRS_REPORT = ATTRS_REPORT;
2193 solo_file = local_name;
2194 dir_tweaking = !(list_only || solo_file || dry_run);
2195 need_retouch_dir_times = preserve_times > 1;
2196 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2197 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2198 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2199 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2201 if (DEBUG_GTE(GENR, 1))
2202 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2204 if (delete_before && !solo_file && cur_flist->used > 0)
2206 if (delete_during == 2) {
2207 deldelay_size = BIGPATHBUFLEN * 4;
2208 deldelay_buf = new_array(char, deldelay_size);
2210 out_of_memory("delete-delay");
2212 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2214 if (append_mode > 0 || whole_file < 0)
2216 if (DEBUG_GTE(FLIST, 1)) {
2217 rprintf(FINFO, "delta-transmission %s\n",
2219 ? "disabled for local transfer or --whole-file"
2223 /* Since we often fill up the outgoing socket and then just sit around
2224 * waiting for the other 2 processes to do their thing, we don't want
2225 * to exit on a timeout. If the data stops flowing, the receiver will
2226 * notice that and let us know via the redo pipe (or its closing). */
2229 dflt_perms = (ACCESSPERMS & ~orig_umask);
2232 #ifdef SUPPORT_HARD_LINKS
2233 if (preserve_hard_links && inc_recurse) {
2234 while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2235 wait_for_receiver();
2239 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2240 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2242 strlcpy(fbuf, solo_file, sizeof fbuf);
2245 ndx = cur_flist->ndx_start - 1;
2246 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2247 if (delete_during && dry_run < 2 && !list_only
2248 && !(fp->flags & FLAG_MISSING_DIR)) {
2249 if (fp->flags & FLAG_CONTENT_DIR) {
2251 if (one_file_system) {
2252 uint32 *devp = F_DIR_DEV_P(fp);
2253 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2255 dirdev = MAKEDEV(0, 0);
2256 delete_in_dir(fbuf, fp, &dirdev);
2258 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2261 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2262 struct file_struct *file = cur_flist->sorted[i];
2264 if (!F_IS_ACTIVE(file))
2270 ndx = i + cur_flist->ndx_start;
2273 strlcpy(fbuf, solo_file, sizeof fbuf);
2276 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2278 check_for_finished_files(itemizing, code, 0);
2280 if (i + cur_flist->ndx_start >= next_loopchk) {
2282 maybe_send_keepalive();
2284 maybe_flush_socket(0);
2285 next_loopchk += loopchk_limit;
2290 write_ndx(f_out, NDX_DONE);
2295 check_for_finished_files(itemizing, code, 1);
2296 if (cur_flist->next || flist_eof)
2298 wait_for_receiver();
2300 } while ((cur_flist = cur_flist->next) != NULL);
2302 if (read_batch && inc_recurse)
2303 write_ndx(f_out, NDX_DONE);
2306 delete_in_dir(NULL, NULL, &dev_zero);
2308 if (DEBUG_GTE(GENR, 1))
2309 rprintf(FINFO, "generate_files phase=%d\n", phase);
2312 check_for_finished_files(itemizing, code, 1);
2315 wait_for_receiver();
2319 if (DEBUG_GTE(GENR, 1))
2320 rprintf(FINFO, "generate_files phase=%d\n", phase);
2322 write_ndx(f_out, NDX_DONE);
2323 write_del_stats(f_out);
2325 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2326 if (protocol_version >= 29 && !delay_updates)
2327 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);
2342 write_ndx(f_out, NDX_DONE);
2343 /* Read MSG_DONE for delay-updates phase & prior messages. */
2344 while (msgdone_cnt == 2)
2345 wait_for_receiver();
2348 info_levels[INFO_FLIST] = save_info_flist;
2349 info_levels[INFO_PROGRESS] = save_info_progress;
2351 if (delete_during == 2)
2352 do_delayed_deletions(fbuf);
2353 if (delete_after && !solo_file && file_total > 0)
2356 if ((need_retouch_dir_perms || need_retouch_dir_times)
2357 && dir_tweaking && (!inc_recurse || delete_during == 2))
2358 touch_up_dirs(dir_flist, -1);
2360 if (max_delete >= 0 && skipped_deletes) {
2362 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2364 io_error |= IOERR_DEL_LIMIT;
2367 if (DEBUG_GTE(GENR, 1))
2368 rprintf(FINFO, "generate_files finished\n");