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 deletion_count = 0; /* used to implement --max-delete */
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 && ++deletion_count > max_delete)
195 ok = do_rmdir(fbuf) == 0;
196 } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
197 what = "make_backup";
198 ok = make_backup(fbuf);
201 ok = robust_unlink(fbuf) == 0;
205 if (!(flags & DEL_MAKE_ROOM))
206 log_delete(fbuf, mode);
209 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
210 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
213 } else if (errno != ENOENT) {
214 rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
224 if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
226 switch (flags & DEL_MAKE_ROOM) {
227 case DEL_FOR_FILE: desc = "regular file"; break;
228 case DEL_FOR_DIR: desc = "directory"; break;
229 case DEL_FOR_SYMLINK: desc = "symlink"; break;
230 case DEL_FOR_DEVICE: desc = "device file"; break;
231 case DEL_FOR_SPECIAL: desc = "special file"; break;
232 default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
234 rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
240 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
241 * its contents, otherwise just checks for content. Returns DR_SUCCESS or
242 * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
243 * buffer is used for recursion, but returned unchanged.)
245 static enum delret delete_dir_contents(char *fname, uint16 flags)
247 struct file_list *dirlist;
254 if (DEBUG_GTE(DEL, 3)) {
255 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
259 dlen = strlen(fname);
260 save_filters = push_local_filters(fname, dlen);
262 non_perishable_cnt = 0;
263 dirlist = get_dirlist(fname, dlen, 0);
264 ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
269 if (!(flags & DEL_RECURSE)) {
275 if (dlen != 1 || *fname != '/')
277 remainder = MAXPATHLEN - (p - fname);
279 /* We do our own recursion, so make delete_item() non-recursive. */
280 flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
283 for (j = dirlist->used; j--; ) {
284 struct file_struct *fp = dirlist->files[j];
286 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
287 if (DEBUG_GTE(DEL, 1)) {
289 "mount point, %s, pins parent directory\n",
296 strlcpy(p, fp->basename, remainder);
297 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
298 do_chmod(fname, fp->mode | S_IWUSR);
299 /* Save stack by recursing to ourself directly. */
300 if (S_ISDIR(fp->mode)) {
301 if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
304 if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
312 pop_local_filters(save_filters);
314 if (ret == DR_NOT_EMPTY) {
315 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
321 static int start_delete_delay_temp(void)
323 char fnametmp[MAXPATHLEN];
324 int save_dry_run = dry_run;
327 if (!get_tmpname(fnametmp, "deldelay")
328 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
329 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
330 inc_recurse ? "" : " -- switching to --delete-after");
332 delete_after = !inc_recurse;
333 dry_run = save_dry_run;
337 dry_run = save_dry_run;
341 static int flush_delete_delay(void)
343 if (deldelay_fd < 0 && !start_delete_delay_temp())
345 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
346 rsyserr(FERROR, errno, "flush of delete-delay buffer");
348 delete_after = !inc_recurse;
356 static int remember_delete(struct file_struct *file, const char *fname, int flags)
360 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
363 if (flags & DEL_NO_UID_WRITE)
364 deldelay_buf[deldelay_cnt++] = '!';
367 len = snprintf(deldelay_buf + deldelay_cnt,
368 deldelay_size - deldelay_cnt,
370 (int)file->mode, fname, '\0');
371 if ((deldelay_cnt += len) <= deldelay_size)
374 if (!flush_delete_delay())
381 static int read_delay_line(char *buf, int *flags_p)
383 static int read_pos = 0;
385 char *bp, *past_space;
388 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
389 if (j < deldelay_cnt)
391 if (deldelay_fd < 0) {
396 deldelay_cnt -= read_pos;
397 if (deldelay_cnt == deldelay_size)
399 if (deldelay_cnt && read_pos) {
400 memmove(deldelay_buf, deldelay_buf + read_pos,
403 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
404 deldelay_size - deldelay_cnt);
408 "ERROR: unexpected EOF in delete-delay file.\n");
413 rsyserr(FERROR, errno,
414 "reading delete-delay file");
421 bp = deldelay_buf + read_pos;
424 *flags_p = DEL_NO_UID_WRITE;
428 if (sscanf(bp, "%x ", &mode) != 1) {
430 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
433 past_space = strchr(bp, ' ') + 1;
434 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
437 if (len > MAXPATHLEN) {
438 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
442 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
443 * instead of returning a pointer to our buffer. */
444 memcpy(buf, past_space, len);
449 static void do_delayed_deletions(char *delbuf)
453 if (deldelay_fd >= 0) {
454 if (deldelay_cnt && !flush_delete_delay())
456 lseek(deldelay_fd, 0, 0);
458 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
459 delete_item(delbuf, mode, flags | DEL_RECURSE);
460 if (deldelay_fd >= 0)
464 /* This function is used to implement per-directory deletion, and is used by
465 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
466 * MAXPATHLEN buffer with the name of the directory in it (the functions we
467 * call will append names onto the end, but the old dir value will be restored
469 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
471 static int already_warned = 0;
472 struct file_list *dirlist;
473 char delbuf[MAXPATHLEN];
475 int save_uid_ndx = uid_ndx;
478 change_local_filter_dir(NULL, 0, 0);
482 if (DEBUG_GTE(DEL, 2))
483 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
486 maybe_send_keepalive();
488 if (io_error && !ignore_errors) {
492 "IO error encountered -- skipping file deletion\n");
498 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
500 if (one_file_system) {
501 if (file->flags & FLAG_TOP_DIR)
502 filesystem_dev = *fs_dev;
503 else if (filesystem_dev != *fs_dev)
508 uid_ndx = ++file_extra_cnt;
510 dirlist = get_dirlist(fbuf, dlen, 0);
512 /* If an item in dirlist is not found in flist, delete it
513 * from the filesystem. */
514 for (i = dirlist->used; i--; ) {
515 struct file_struct *fp = dirlist->files[i];
516 if (!F_IS_ACTIVE(fp))
518 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
519 if (INFO_GTE(MOUNT, 1))
520 rprintf(FINFO, "cannot delete mount point: %s\n",
524 if (flist_find(cur_flist, fp) < 0) {
525 int flags = DEL_RECURSE;
526 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
527 flags |= DEL_NO_UID_WRITE;
529 if (delete_during == 2) {
530 if (!remember_delete(fp, delbuf, flags))
533 delete_item(delbuf, fp->mode, flags);
545 /* This deletes any files on the receiving side that are not present on the
546 * sending side. This is used by --delete-before and --delete-after. */
547 static void do_delete_pass(void)
549 char fbuf[MAXPATHLEN];
553 /* dry_run is incremented when the destination doesn't exist yet. */
554 if (dry_run > 1 || list_only)
557 for (j = 0; j < cur_flist->used; j++) {
558 struct file_struct *file = cur_flist->sorted[j];
562 if (!(file->flags & FLAG_CONTENT_DIR)) {
563 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
567 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
568 rprintf(FINFO, "deleting in %s\n", fbuf);
570 if (link_stat(fbuf, &st, keep_dirlinks) < 0
571 || !S_ISDIR(st.st_mode))
574 delete_in_dir(fbuf, file, &st.st_dev);
576 delete_in_dir(NULL, NULL, &dev_zero);
578 if (INFO_GTE(FLIST, 2) && !am_server)
579 rprintf(FINFO, " \r");
582 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
584 #if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
585 if (S_ISLNK(file->mode)) {
589 if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
592 if (preserve_perms) {
593 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
595 } else if (preserve_executability
596 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
599 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
602 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
606 if (preserve_acls && !S_ISLNK(file->mode)) {
607 if (!ACL_READY(*sxp))
609 if (set_acl(NULL, file, sxp) == 0)
613 #ifdef SUPPORT_XATTRS
614 if (preserve_xattrs) {
615 if (!XATTR_READY(*sxp))
616 get_xattr(fname, sxp);
617 if (xattr_diff(file, sxp, 0))
625 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
626 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
629 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
630 int keep_time = !preserve_times ? 0
631 : S_ISDIR(file->mode) ? preserve_times > 1 :
632 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
635 !S_ISLNK(file->mode);
638 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
639 iflags |= ITEM_REPORT_SIZE;
640 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
641 if (iflags & ITEM_LOCAL_CHANGE)
642 iflags |= symlink_timeset_failed_flags;
644 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
645 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
646 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
647 iflags |= ITEM_REPORT_TIME;
648 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
649 if (S_ISLNK(file->mode)) {
653 if (preserve_perms) {
654 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
655 iflags |= ITEM_REPORT_PERMS;
656 } else if (preserve_executability
657 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
658 iflags |= ITEM_REPORT_PERMS;
659 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
660 iflags |= ITEM_REPORT_OWNER;
661 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
662 && sxp->st.st_gid != (gid_t)F_GROUP(file))
663 iflags |= ITEM_REPORT_GROUP;
665 if (preserve_acls && !S_ISLNK(file->mode)) {
666 if (!ACL_READY(*sxp))
667 get_acl(fnamecmp, sxp);
668 if (set_acl(NULL, file, sxp) == 0)
669 iflags |= ITEM_REPORT_ACL;
672 #ifdef SUPPORT_XATTRS
673 if (preserve_xattrs) {
674 if (!XATTR_READY(*sxp))
675 get_xattr(fnamecmp, sxp);
676 if (xattr_diff(file, sxp, 1))
677 iflags |= ITEM_REPORT_XATTR;
681 #ifdef SUPPORT_XATTRS
682 if (preserve_xattrs && xattr_diff(file, NULL, 1))
683 iflags |= ITEM_REPORT_XATTR;
685 iflags |= ITEM_IS_NEW;
689 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
690 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
691 if (protocol_version >= 29) {
693 write_ndx(sock_f_out, ndx);
694 write_shortint(sock_f_out, iflags);
695 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
696 write_byte(sock_f_out, fnamecmp_type);
697 if (iflags & ITEM_XNAME_FOLLOWS)
698 write_vstring(sock_f_out, xname, strlen(xname));
699 #ifdef SUPPORT_XATTRS
700 if (preserve_xattrs && !dry_run
701 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
702 send_xattr_request(NULL, file,
703 iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
706 } else if (ndx >= 0) {
707 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
708 log_item(code, file, &stats, iflags, xname);
714 /* Perform our quick-check heuristic for determining if a file is unchanged. */
715 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
717 if (st->st_size != F_LENGTH(file))
720 /* if always checksum is set then we use the checksum instead
721 of the file time to determine whether to sync */
722 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
723 char sum[MAX_DIGEST_LEN];
724 file_checksum(fn, sum, st->st_size);
725 return memcmp(sum, F_SUM(file), checksum_len) == 0;
734 return cmp_time(st->st_mtime, file->modtime) == 0;
739 * set (initialize) the size entries in the per-file sum_struct
740 * calculating dynamic block and checksum sizes.
742 * This is only called from generate_and_send_sums() but is a separate
743 * function to encapsulate the logic.
745 * The block size is a rounded square root of file length.
747 * The checksum size is determined according to:
748 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
749 * provided by Donovan Baarda which gives a probability of rsync
750 * algorithm corrupting data and falling back using the whole md4
753 * This might be made one of several selectable heuristics.
755 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
762 blength = block_size;
763 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
764 blength = BLOCK_SIZE;
766 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
769 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
770 if (c < 0 || c >= max_blength)
771 blength = max_blength;
776 if (len < (int64)blength * blength)
779 } while (c >= 8); /* round to multiple of 8 */
780 blength = MAX(blength, BLOCK_SIZE);
784 if (protocol_version < 27) {
785 s2length = csum_length;
786 } else if (csum_length == SUM_LENGTH) {
787 s2length = SUM_LENGTH;
790 int b = BLOCKSUM_BIAS;
791 for (l = len; l >>= 1; b += 2) {}
792 for (c = blength; (c >>= 1) && b; b--) {}
793 /* add a bit, subtract rollsum, round up. */
794 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
795 s2length = MAX(s2length, csum_length);
796 s2length = MIN(s2length, SUM_LENGTH);
800 sum->blength = blength;
801 sum->s2length = s2length;
802 sum->remainder = (int32)(len % blength);
803 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
805 if ((int64)sum->count != l)
808 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
810 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
811 big_num(sum->count), (long)sum->remainder, (long)sum->blength,
812 sum->s2length, big_num(sum->flength));
818 * Generate and send a stream of signatures/checksums that describe a buffer
820 * Generate approximately one checksum every block_len bytes.
822 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
825 struct map_struct *mapbuf;
826 struct sum_struct sum;
829 sum_sizes_sqroot(&sum, len);
832 write_sum_head(f_out, &sum);
834 if (append_mode > 0 && f_copy < 0)
838 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
842 for (i = 0; i < sum.count; i++) {
843 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
844 char *map = map_ptr(mapbuf, offset, n1);
845 char sum2[SUM_LENGTH];
852 full_write(f_copy, map, n1);
857 sum1 = get_checksum1(map, n1);
858 get_checksum2(map, n1, sum2);
860 if (DEBUG_GTE(DELTASUM, 3)) {
862 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
863 big_num(i), big_num(offset - n1), (long)n1,
864 (unsigned long)sum1);
866 write_int(f_out, sum1);
867 write_buf(f_out, sum2, sum.s2length);
877 /* Try to find a filename in the same dir as "fname" with a similar name. */
878 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
880 int fname_len, fname_suf_len;
881 const char *fname_suf, *fname = file->basename;
882 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
883 int j, lowest_j = -1;
885 fname_len = strlen(fname);
886 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
888 for (j = 0; j < dirlist->used; j++) {
889 struct file_struct *fp = dirlist->files[j];
890 const char *suf, *name;
894 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
895 || fp->flags & FLAG_FILE_SENT)
900 if (F_LENGTH(fp) == F_LENGTH(file)
901 && cmp_time(fp->modtime, file->modtime) == 0) {
902 if (DEBUG_GTE(FUZZY, 2)) {
904 "fuzzy size/modtime match for %s\n",
911 suf = find_filename_suffix(name, len, &suf_len);
913 dist = fuzzy_distance(name, len, fname, fname_len);
914 /* Add some extra weight to how well the suffixes match. */
915 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
917 if (DEBUG_GTE(FUZZY, 2)) {
918 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
919 name, (int)(dist>>16), (int)(dist&0xFFFF));
921 if (dist <= lowest_dist) {
930 /* Copy a file found in our --copy-dest handling. */
931 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
933 char buf[MAXPATHLEN];
934 const char *copy_to, *partialptr;
935 int save_preserve_xattrs = preserve_xattrs;
939 /* Let copy_file open the destination in place. */
943 fd_w = open_tmpfile(buf, dest, file);
948 cleanup_set(copy_to, NULL, NULL, -1, -1);
949 if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
950 if (INFO_GTE(COPY, 1)) {
951 rsyserr(FINFO, errno, "copy_file %s => %s",
952 full_fname(src), copy_to);
954 /* Try to clean up. */
959 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
960 preserve_xattrs = 0; /* xattrs were copied with file */
961 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
962 preserve_xattrs = save_preserve_xattrs;
967 /* This is only called for regular files. We return -2 if we've finished
968 * handling the file, -1 if no dest-linking occurred, or a non-negative
969 * value if we found an alternate basis file. */
970 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
971 char *cmpbuf, stat_x *sxp, int itemizing,
979 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
980 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
982 switch (match_level) {
988 if (!unchanged_file(cmpbuf, file, &sxp->st))
994 if (!unchanged_attrs(cmpbuf, file, sxp))
1001 } while (basis_dir[++j] != NULL);
1006 if (j != best_match) {
1008 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1009 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1013 if (match_level == 3 && !copy_dest) {
1014 #ifdef SUPPORT_HARD_LINKS
1016 if (!hard_link_one(file, fname, cmpbuf, 1))
1018 if (preserve_hard_links && F_IS_HLINKED(file))
1019 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1020 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1021 itemize(cmpbuf, file, ndx, 1, sxp,
1022 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1028 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1029 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
1030 rprintf(FCLIENT, "%s is uptodate\n", fname);
1034 if (match_level >= 2) {
1035 #ifdef SUPPORT_HARD_LINKS
1036 try_a_copy: /* Copy the file locally. */
1038 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1041 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1042 if (maybe_ATTRS_REPORT
1043 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
1044 || (INFO_GTE(NAME, 2) && match_level == 3))) {
1045 code = match_level == 3 ? FCLIENT : FINFO;
1046 rprintf(code, "%s%s\n", fname,
1047 match_level == 3 ? " is uptodate" : "");
1049 #ifdef SUPPORT_HARD_LINKS
1050 if (preserve_hard_links && F_IS_HLINKED(file))
1051 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1056 return FNAMECMP_BASIS_DIR_LOW + j;
1059 /* This is only called for non-regular files. We return -2 if we've finished
1060 * handling the file, or -1 if no dest-linking occurred, or a non-negative
1061 * value if we found an alternate basis file. */
1062 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1063 char *cmpbuf, stat_x *sxp, int itemizing,
1066 char lnk[MAXPATHLEN];
1067 int best_match = -1;
1068 int match_level = 0;
1069 enum nonregtype type;
1073 #ifndef SUPPORT_LINKS
1074 if (S_ISLNK(file->mode))
1077 if (S_ISDIR(file->mode)) {
1079 } else if (IS_SPECIAL(file->mode))
1080 type = TYPE_SPECIAL;
1081 else if (IS_DEVICE(file->mode))
1083 #ifdef SUPPORT_LINKS
1084 else if (S_ISLNK(file->mode))
1085 type = TYPE_SYMLINK;
1089 "internal: try_dests_non() called with invalid mode (%o)\n",
1091 exit_cleanup(RERR_UNSUPPORTED);
1095 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1096 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1100 if (!S_ISDIR(sxp->st.st_mode))
1104 if (!IS_SPECIAL(sxp->st.st_mode))
1108 if (!IS_DEVICE(sxp->st.st_mode))
1111 #ifdef SUPPORT_LINKS
1113 if (!S_ISLNK(sxp->st.st_mode))
1118 if (match_level < 1) {
1127 devp = F_RDEV_P(file);
1128 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1131 #ifdef SUPPORT_LINKS
1133 if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1136 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1141 if (match_level < 2) {
1145 if (unchanged_attrs(cmpbuf, file, sxp)) {
1150 } while (basis_dir[++j] != NULL);
1155 if (j != best_match) {
1157 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1158 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1162 if (match_level == 3) {
1163 #ifdef SUPPORT_HARD_LINKS
1165 #ifndef CAN_HARDLINK_SYMLINK
1166 && !S_ISLNK(file->mode)
1168 #ifndef CAN_HARDLINK_SPECIAL
1169 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1171 && !S_ISDIR(file->mode)) {
1172 if (do_link(cmpbuf, fname) < 0) {
1173 rsyserr(FERROR_XFER, errno,
1174 "failed to hard-link %s with %s",
1178 if (preserve_hard_links && F_IS_HLINKED(file))
1179 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1183 if (itemizing && stdout_format_has_i
1184 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1185 int chg = compare_dest && type != TYPE_DIR ? 0
1186 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1187 char *lp = match_level == 3 ? "" : NULL;
1188 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1190 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1191 rprintf(FCLIENT, "%s%s is uptodate\n",
1192 fname, type == TYPE_DIR ? "/" : "");
1200 static void list_file_entry(struct file_struct *f)
1202 char permbuf[PERMSTRING_SIZE];
1204 int colwidth = human_readable ? 14 : 11;
1206 if (!F_IS_ACTIVE(f)) {
1207 /* this can happen if duplicate names were removed */
1211 permstring(permbuf, f->mode);
1214 /* TODO: indicate '+' if the entry has an ACL. */
1216 #ifdef SUPPORT_LINKS
1217 if (preserve_links && S_ISLNK(f->mode)) {
1218 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1219 permbuf, colwidth, comma_num(len),
1220 timestring(f->modtime), f_name(f, NULL),
1225 rprintf(FINFO, "%s %*s %s %s\n",
1226 permbuf, colwidth, comma_num(len),
1227 timestring(f->modtime), f_name(f, NULL));
1231 static int phase = 0;
1232 static int dflt_perms;
1234 static int implied_dirs_are_missing;
1235 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1236 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1238 return F_DEPTH(file) > F_DEPTH(subtree)
1239 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1242 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1243 * make sure it exists, and has the right permissions/timestamp info. For
1244 * all other non-regular files (symlinks, etc.) we create them here. For
1245 * regular files that have changed, we try to find a basis file and then
1246 * start sending checksums. The ndx is the file's unique index value.
1248 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1249 * passed to delete_item(), which can use it during a recursive delete.)
1251 * Note that f_out is set to -1 when doing final directory-permission and
1252 * modification-time repair. */
1253 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1254 int itemizing, enum logcode code, int f_out)
1256 static const char *parent_dirname = "";
1257 /* Missing dir not created due to --dry-run; will still be scanned. */
1258 static struct file_struct *dry_missing_dir = NULL;
1259 /* Missing dir whose contents are skipped altogether due to
1260 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1261 static struct file_struct *skip_dir = NULL;
1262 static struct file_list *fuzzy_dirlist = NULL;
1263 static int need_fuzzy_dirlist = 0;
1264 struct file_struct *fuzzy_file = NULL;
1265 int fd = -1, f_copy = -1;
1267 STRUCT_STAT partial_st;
1268 struct file_struct *back_file = NULL;
1269 int statret, real_ret, stat_errno;
1270 char *fnamecmp, *partialptr, *backupptr = NULL;
1271 char fnamecmpbuf[MAXPATHLEN];
1272 uchar fnamecmp_type;
1273 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1274 int is_dir = !S_ISDIR(file->mode) ? 0
1275 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1278 if (DEBUG_GTE(GENR, 1))
1279 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1283 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1285 list_file_entry(file);
1290 if (is_below(file, skip_dir)) {
1292 file->flags |= FLAG_MISSING_DIR;
1293 #ifdef SUPPORT_HARD_LINKS
1294 else if (F_IS_HLINKED(file))
1295 handle_skipped_hlink(file, itemizing, code, f_out);
1302 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1303 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1306 #ifdef SUPPORT_HARD_LINKS
1307 if (F_IS_HLINKED(file))
1308 handle_skipped_hlink(file, itemizing, code, f_out);
1310 rprintf(FERROR_XFER,
1311 "skipping daemon-excluded %s \"%s\"\n",
1312 is_dir ? "directory" : "file", fname);
1314 goto skipping_dir_contents;
1320 sx.acc_acl = sx.def_acl = NULL;
1322 #ifdef SUPPORT_XATTRS
1325 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1326 parent_is_dry_missing:
1327 if (fuzzy_dirlist) {
1328 flist_free(fuzzy_dirlist);
1329 fuzzy_dirlist = NULL;
1331 parent_dirname = "";
1333 stat_errno = ENOENT;
1335 const char *dn = file->dirname ? file->dirname : ".";
1336 dry_missing_dir = NULL;
1337 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1338 if (relative_paths && !implied_dirs
1339 && do_stat(dn, &sx.st) < 0) {
1341 goto parent_is_dry_missing;
1342 if (create_directory_path(fname) < 0) {
1343 rsyserr(FERROR_XFER, errno,
1344 "recv_generator: mkdir %s failed",
1348 if (fuzzy_dirlist) {
1349 flist_free(fuzzy_dirlist);
1350 fuzzy_dirlist = NULL;
1353 need_fuzzy_dirlist = 1;
1355 if (!preserve_perms)
1356 dflt_perms = default_perms_for_dir(dn);
1359 parent_dirname = dn;
1361 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1362 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1363 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1364 need_fuzzy_dirlist = 0;
1367 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1371 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1376 file->flags |= FLAG_MISSING_DIR;
1378 #ifdef SUPPORT_HARD_LINKS
1379 else if (F_IS_HLINKED(file))
1380 handle_skipped_hlink(file, itemizing, code, f_out);
1382 if (INFO_GTE(SKIP, 1)) {
1383 rprintf(FINFO, "not creating new %s \"%s\"\n",
1384 is_dir ? "directory" : "file", fname);
1389 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1390 && !am_root && sx.st.st_uid == our_uid)
1391 del_opts |= DEL_NO_UID_WRITE;
1393 if (ignore_existing > 0 && statret == 0
1394 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1395 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1396 rprintf(FINFO, "%s exists\n", fname);
1397 #ifdef SUPPORT_HARD_LINKS
1398 if (F_IS_HLINKED(file))
1399 handle_skipped_hlink(file, itemizing, code, f_out);
1405 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1408 /* In inc_recurse mode we want to make sure any missing
1409 * directories get created while we're still processing
1410 * the parent dir (which allows us to touch the parent
1411 * dir's mtime right away). We will handle the dir in
1412 * full later (right before we handle its contents). */
1414 && (S_ISDIR(sx.st.st_mode)
1415 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1416 goto cleanup; /* Any errors get reported later. */
1417 if (do_mkdir(fname, file->mode & 0700) == 0)
1418 file->flags |= FLAG_DIR_CREATED;
1421 /* The file to be received is a directory, so we need
1422 * to prepare appropriately. If there is already a
1423 * file of that name and it is *not* a directory, then
1424 * we need to delete it. If it doesn't exist, then
1425 * (perhaps recursively) create it. */
1426 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1427 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1428 goto skipping_dir_contents;
1431 if (dry_run && statret != 0) {
1432 if (!dry_missing_dir)
1433 dry_missing_dir = file;
1434 file->flags |= FLAG_MISSING_DIR;
1438 if (file->flags & FLAG_DIR_CREATED)
1440 if (!preserve_perms) { /* See comment in non-dir code below. */
1441 file->mode = dest_mode(file->mode, sx.st.st_mode,
1442 dflt_perms, statret == 0);
1444 if (statret != 0 && basis_dir[0] != NULL) {
1445 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1454 if (itemizing && f_out != -1) {
1455 itemize(fname, file, ndx, statret, &sx,
1456 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1458 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1459 if (!relative_paths || errno != ENOENT
1460 || create_directory_path(fname) < 0
1461 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1462 rsyserr(FERROR_XFER, errno,
1463 "recv_generator: mkdir %s failed",
1465 skipping_dir_contents:
1467 "*** Skipping any contents from this failed directory ***\n");
1469 file->flags |= FLAG_MISSING_DIR;
1473 #ifdef SUPPORT_XATTRS
1474 if (preserve_xattrs && statret == 1)
1475 copy_xattrs(fnamecmpbuf, fname);
1477 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1478 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1479 rprintf(code, "%s/\n", fname);
1481 /* We need to ensure that the dirs in the transfer have writable
1482 * permissions during the time we are putting files within them.
1483 * This is then fixed after the transfer is done. */
1485 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1486 mode_t mode = file->mode | S_IWUSR;
1487 if (do_chmod(fname, mode) < 0) {
1488 rsyserr(FERROR_XFER, errno,
1489 "failed to modify permissions on %s",
1492 need_retouch_dir_perms = 1;
1496 if (real_ret != 0 && one_file_system)
1497 real_sx.st.st_dev = filesystem_dev;
1499 if (one_file_system) {
1500 uint32 *devp = F_DIR_DEV_P(file);
1501 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1502 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1505 else if (delete_during && f_out != -1 && !phase
1506 && !(file->flags & FLAG_MISSING_DIR)) {
1507 if (file->flags & FLAG_CONTENT_DIR)
1508 delete_in_dir(fname, file, &real_sx.st.st_dev);
1510 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1515 /* If we're not preserving permissions, change the file-list's
1516 * mode based on the local permissions and some heuristics. */
1517 if (!preserve_perms) {
1518 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1519 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1523 #ifdef SUPPORT_HARD_LINKS
1524 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1525 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1529 if (preserve_links && S_ISLNK(file->mode)) {
1530 #ifdef SUPPORT_LINKS
1531 const char *sl = F_SYMLINK(file);
1532 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1533 if (INFO_GTE(NAME, 1)) {
1535 fname = f_name(file, NULL);
1537 "ignoring unsafe symlink %s -> \"%s\"\n",
1538 full_fname(fname), sl);
1543 char lnk[MAXPATHLEN];
1546 if (!S_ISLNK(sx.st.st_mode))
1548 else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1549 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1550 /* The link is pointing to the right place. */
1551 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1553 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1554 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1555 if (preserve_hard_links && F_IS_HLINKED(file))
1556 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1558 if (remove_source_files == 1)
1559 goto return_with_success;
1562 /* Not the right symlink (or not a symlink), so
1564 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1566 } else if (basis_dir[0] != NULL) {
1567 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1570 #ifndef CAN_HARDLINK_SYMLINK
1572 /* Resort to --copy-dest behavior. */
1582 #ifdef SUPPORT_HARD_LINKS
1583 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1584 cur_flist->in_progress++;
1588 if (do_symlink(sl, fname) != 0) {
1589 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1590 full_fname(fname), sl);
1592 set_file_attrs(fname, file, NULL, NULL, 0);
1594 itemize(fname, file, ndx, statret, &sx,
1595 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1597 if (code != FNONE && INFO_GTE(NAME, 1))
1598 rprintf(code, "%s -> %s\n", fname, sl);
1599 #ifdef SUPPORT_HARD_LINKS
1600 if (preserve_hard_links && F_IS_HLINKED(file))
1601 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1603 /* This does not check remove_source_files == 1
1604 * because this is one of the items that the old
1605 * --remove-sent-files option would remove. */
1606 if (remove_source_files)
1607 goto return_with_success;
1613 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1614 || (preserve_specials && IS_SPECIAL(file->mode))) {
1615 uint32 *devp = F_RDEV_P(file);
1616 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1619 if (IS_DEVICE(file->mode)) {
1620 if (!IS_DEVICE(sx.st.st_mode))
1622 del_for_flag = DEL_FOR_DEVICE;
1624 if (!IS_SPECIAL(sx.st.st_mode))
1626 del_for_flag = DEL_FOR_SPECIAL;
1629 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1630 && sx.st.st_rdev == rdev) {
1631 /* The device or special file is identical. */
1632 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1634 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1635 #ifdef SUPPORT_HARD_LINKS
1636 if (preserve_hard_links && F_IS_HLINKED(file))
1637 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1639 if (remove_source_files == 1)
1640 goto return_with_success;
1643 if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1645 } else if (basis_dir[0] != NULL) {
1646 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1649 #ifndef CAN_HARDLINK_SPECIAL
1651 /* Resort to --copy-dest behavior. */
1661 #ifdef SUPPORT_HARD_LINKS
1662 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1663 cur_flist->in_progress++;
1667 if (DEBUG_GTE(GENR, 1)) {
1668 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1669 fname, (int)file->mode,
1670 (long)major(rdev), (long)minor(rdev));
1672 if (do_mknod(fname, file->mode, rdev) < 0) {
1673 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1676 set_file_attrs(fname, file, NULL, NULL, 0);
1678 itemize(fname, file, ndx, statret, &sx,
1679 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1681 if (code != FNONE && INFO_GTE(NAME, 1))
1682 rprintf(code, "%s\n", fname);
1683 #ifdef SUPPORT_HARD_LINKS
1684 if (preserve_hard_links && F_IS_HLINKED(file))
1685 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1687 if (remove_source_files == 1)
1688 goto return_with_success;
1693 if (!S_ISREG(file->mode)) {
1695 fname = f_name(file, NULL);
1696 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1700 if (max_size > 0 && F_LENGTH(file) > max_size) {
1701 if (INFO_GTE(SKIP, 1)) {
1703 fname = f_name(file, NULL);
1704 rprintf(FINFO, "%s is over max-size\n", fname);
1708 if (min_size > 0 && F_LENGTH(file) < min_size) {
1709 if (INFO_GTE(SKIP, 1)) {
1711 fname = f_name(file, NULL);
1712 rprintf(FINFO, "%s is under min-size\n", fname);
1717 if (update_only > 0 && statret == 0
1718 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1719 if (INFO_GTE(SKIP, 1))
1720 rprintf(FINFO, "%s is newer\n", fname);
1721 #ifdef SUPPORT_HARD_LINKS
1722 if (F_IS_HLINKED(file))
1723 handle_skipped_hlink(file, itemizing, code, f_out);
1729 fnamecmp_type = FNAMECMP_FNAME;
1731 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1732 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1735 stat_errno = ENOENT;
1738 if (statret != 0 && basis_dir[0] != NULL) {
1739 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1742 if (remove_source_files == 1)
1743 goto return_with_success;
1747 fnamecmp = fnamecmpbuf;
1756 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1757 && link_stat(partialptr, &partial_st, 0) == 0
1758 && S_ISREG(partial_st.st_mode)) {
1760 goto prepare_to_open;
1764 if (statret != 0 && fuzzy_dirlist) {
1765 int j = find_fuzzy(file, fuzzy_dirlist);
1767 fuzzy_file = fuzzy_dirlist->files[j];
1768 f_name(fuzzy_file, fnamecmpbuf);
1769 if (DEBUG_GTE(FUZZY, 1)) {
1770 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1771 fname, fnamecmpbuf);
1773 sx.st.st_size = F_LENGTH(fuzzy_file);
1775 fnamecmp = fnamecmpbuf;
1776 fnamecmp_type = FNAMECMP_FUZZY;
1781 #ifdef SUPPORT_HARD_LINKS
1782 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1783 cur_flist->in_progress++;
1787 if (stat_errno == ENOENT)
1789 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1794 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1796 else if (fnamecmp_type == FNAMECMP_FUZZY)
1798 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1800 do_unlink(partialptr);
1801 handle_partial_dir(partialptr, PDIR_DELETE);
1803 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1805 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1806 #ifdef SUPPORT_HARD_LINKS
1807 if (preserve_hard_links && F_IS_HLINKED(file))
1808 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1810 if (remove_source_files != 1)
1812 return_with_success:
1814 send_msg_int(MSG_SUCCESS, ndx);
1818 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1819 #ifdef SUPPORT_HARD_LINKS
1820 if (F_IS_HLINKED(file))
1821 handle_skipped_hlink(file, itemizing, code, f_out);
1829 fnamecmp = partialptr;
1830 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1837 if (read_batch || whole_file) {
1838 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1839 if (!(backupptr = get_backup_name(fname)))
1841 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1842 goto pretend_missing;
1843 if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1844 unmake_file(back_file);
1852 if (fuzzy_dirlist) {
1853 int j = flist_find(fuzzy_dirlist, file);
1854 if (j >= 0) /* don't use changing file as future fuzzy basis */
1855 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1859 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1860 rsyserr(FERROR, errno, "failed to open %s, continuing",
1861 full_fname(fnamecmp));
1863 /* pretend the file didn't exist */
1864 #ifdef SUPPORT_HARD_LINKS
1865 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1866 cur_flist->in_progress++;
1870 statret = real_ret = -1;
1874 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1875 if (!(backupptr = get_backup_name(fname))) {
1879 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1881 goto pretend_missing;
1883 if (robust_unlink(backupptr) && errno != ENOENT) {
1884 rsyserr(FERROR_XFER, errno, "unlink %s",
1885 full_fname(backupptr));
1886 unmake_file(back_file);
1891 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1892 int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1893 if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1894 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1895 save_errno = errno ? errno : save_errno;
1900 rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1901 unmake_file(back_file);
1907 fnamecmp_type = FNAMECMP_BACKUP;
1910 if (DEBUG_GTE(DELTASUM, 3)) {
1911 rprintf(FINFO, "gen mapped %s of size %s\n",
1912 fnamecmp, big_num(sx.st.st_size));
1915 if (DEBUG_GTE(DELTASUM, 2))
1916 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1919 if (remove_source_files && !delay_updates && !phase && !dry_run)
1920 increment_active_files(ndx, itemizing, code);
1921 if (inc_recurse && !dry_run)
1922 cur_flist->in_progress++;
1923 #ifdef SUPPORT_HARD_LINKS
1924 if (preserve_hard_links && F_IS_HLINKED(file))
1925 file->flags |= FLAG_FILE_SENT;
1927 write_ndx(f_out, ndx);
1929 int iflags = ITEM_TRANSFER;
1930 if (always_checksum > 0)
1931 iflags |= ITEM_REPORT_CHANGE;
1932 if (fnamecmp_type != FNAMECMP_FNAME)
1933 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1934 if (fnamecmp_type == FNAMECMP_FUZZY)
1935 iflags |= ITEM_XNAME_FOLLOWS;
1936 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1937 fuzzy_file ? fuzzy_file->basename : NULL);
1942 #ifdef SUPPORT_XATTRS
1943 if (preserve_xattrs)
1944 free_xattr(&real_sx);
1949 #ifdef SUPPORT_HARD_LINKS
1950 if (preserve_hard_links && F_IS_HLINKED(file))
1951 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1958 if (statret != 0 || whole_file)
1959 write_sum_head(f_out, NULL);
1960 else if (sx.st.st_size <= 0) {
1961 write_sum_head(f_out, NULL);
1964 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1966 "WARNING: file is too large for checksum sending: %s\n",
1968 write_sum_head(f_out, NULL);
1975 int save_preserve_xattrs = preserve_xattrs;
1978 #ifdef SUPPORT_XATTRS
1979 if (preserve_xattrs) {
1980 copy_xattrs(fname, backupptr);
1981 preserve_xattrs = 0;
1984 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1985 preserve_xattrs = save_preserve_xattrs;
1986 if (INFO_GTE(BACKUP, 1)) {
1987 rprintf(FINFO, "backed up %s to %s\n",
1990 unmake_file(back_file);
1997 #ifdef SUPPORT_XATTRS
1998 if (preserve_xattrs)
2004 #ifdef SUPPORT_HARD_LINKS
2005 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2006 enum logcode code, int f_out)
2008 char fbuf[MAXPATHLEN];
2010 struct file_list *save_flist = cur_flist;
2012 /* If we skip the last item in a chain of links and there was a
2013 * prior non-skipped hard-link waiting to finish, finish it now. */
2014 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2017 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2018 cur_flist->in_progress--; /* undo prior increment */
2020 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2022 cur_flist = save_flist;
2026 static void touch_up_dirs(struct file_list *flist, int ndx)
2028 static int counter = 0;
2029 struct file_struct *file;
2035 end = flist->used - 1;
2039 /* Fix any directory permissions that were modified during the
2040 * transfer and/or re-set any tweaked modified-time values. */
2041 for (i = start; i <= end; i++, counter++) {
2042 file = flist->files[i];
2043 if (!S_ISDIR(file->mode)
2044 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2046 if (DEBUG_GTE(TIME, 2)) {
2047 fname = f_name(file, NULL);
2048 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2051 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2052 || (!need_retouch_dir_times && file->mode & S_IWUSR))
2054 fname = f_name(file, NULL);
2055 if (!(file->mode & S_IWUSR))
2056 do_chmod(fname, file->mode);
2057 if (need_retouch_dir_times) {
2059 if (link_stat(fname, &st, 0) == 0
2060 && cmp_time(st.st_mtime, file->modtime) != 0)
2061 set_modtime(fname, file->modtime, file->mode);
2063 if (counter >= loopchk_limit) {
2065 maybe_send_keepalive();
2067 maybe_flush_socket(0);
2073 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2075 struct file_struct *file;
2076 struct file_list *flist;
2077 char fbuf[MAXPATHLEN];
2081 #ifdef SUPPORT_HARD_LINKS
2082 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2083 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2084 file = flist->files[ndx - flist->ndx_start];
2085 assert(file->flags & FLAG_HLINKED);
2086 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2087 flist->in_progress--;
2092 if (check_redo && (ndx = get_redo_num()) != -1) {
2093 csum_length = SUM_LENGTH;
2094 max_size = -max_size;
2095 min_size = -min_size;
2096 ignore_existing = -ignore_existing;
2097 ignore_non_existing = -ignore_non_existing;
2098 update_only = -update_only;
2099 always_checksum = -always_checksum;
2100 size_only = -size_only;
2101 append_mode = -append_mode;
2102 make_backups = -make_backups; /* avoid dup backup w/inplace */
2106 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2108 file = cur_flist->files[ndx - cur_flist->ndx_start];
2110 strlcpy(fbuf, solo_file, sizeof fbuf);
2113 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2114 cur_flist->to_redo--;
2118 csum_length = SHORT_SUM_LENGTH;
2119 max_size = -max_size;
2120 min_size = -min_size;
2121 ignore_existing = -ignore_existing;
2122 ignore_non_existing = -ignore_non_existing;
2123 update_only = -update_only;
2124 always_checksum = -always_checksum;
2125 size_only = -size_only;
2126 append_mode = -append_mode;
2127 make_backups = -make_backups;
2132 if (cur_flist == first_flist)
2135 /* We only get here if inc_recurse is enabled. */
2136 if (first_flist->in_progress || first_flist->to_redo)
2140 write_ndx(sock_f_out, NDX_DONE);
2141 maybe_flush_socket(1);
2144 if (delete_during == 2 || !dir_tweaking) {
2145 /* Skip directory touch-up. */
2146 } else if (first_flist->parent_ndx >= 0)
2147 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2149 flist_free(first_flist); /* updates first_flist */
2153 void generate_files(int f_out, const char *local_name)
2155 int i, ndx, next_loopchk = 0;
2156 char fbuf[MAXPATHLEN];
2159 int save_info_flist = info_levels[INFO_FLIST];
2160 int save_info_progress = info_levels[INFO_PROGRESS];
2162 if (protocol_version >= 29) {
2164 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2165 code = logfile_format_has_i ? FNONE : FLOG;
2166 } else if (am_daemon) {
2167 itemizing = logfile_format_has_i && do_xfers;
2168 maybe_ATTRS_REPORT = ATTRS_REPORT;
2169 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2170 } else if (!am_server) {
2171 itemizing = stdout_format_has_i;
2172 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2173 code = itemizing ? FNONE : FINFO;
2176 maybe_ATTRS_REPORT = ATTRS_REPORT;
2179 solo_file = local_name;
2180 dir_tweaking = !(list_only || solo_file || dry_run);
2181 need_retouch_dir_times = preserve_times > 1;
2182 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2183 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2184 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2185 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2187 if (DEBUG_GTE(GENR, 1))
2188 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2190 if (delete_before && !solo_file && cur_flist->used > 0)
2192 if (delete_during == 2) {
2193 deldelay_size = BIGPATHBUFLEN * 4;
2194 deldelay_buf = new_array(char, deldelay_size);
2196 out_of_memory("delete-delay");
2198 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2200 if (append_mode > 0 || whole_file < 0)
2202 if (DEBUG_GTE(FLIST, 1)) {
2203 rprintf(FINFO, "delta-transmission %s\n",
2205 ? "disabled for local transfer or --whole-file"
2209 /* Since we often fill up the outgoing socket and then just sit around
2210 * waiting for the other 2 processes to do their thing, we don't want
2211 * to exit on a timeout. If the data stops flowing, the receiver will
2212 * notice that and let us know via the redo pipe (or its closing). */
2215 dflt_perms = (ACCESSPERMS & ~orig_umask);
2218 #ifdef SUPPORT_HARD_LINKS
2219 if (preserve_hard_links && inc_recurse) {
2220 while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2221 wait_for_receiver();
2225 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2226 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2228 strlcpy(fbuf, solo_file, sizeof fbuf);
2231 ndx = cur_flist->ndx_start - 1;
2232 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2233 if (delete_during && dry_run < 2 && !list_only
2234 && !(fp->flags & FLAG_MISSING_DIR)) {
2235 if (fp->flags & FLAG_CONTENT_DIR) {
2237 if (one_file_system) {
2238 uint32 *devp = F_DIR_DEV_P(fp);
2239 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2241 dirdev = MAKEDEV(0, 0);
2242 delete_in_dir(fbuf, fp, &dirdev);
2244 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2247 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2248 struct file_struct *file = cur_flist->sorted[i];
2250 if (!F_IS_ACTIVE(file))
2256 ndx = i + cur_flist->ndx_start;
2259 strlcpy(fbuf, solo_file, sizeof fbuf);
2262 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2264 check_for_finished_files(itemizing, code, 0);
2266 if (i + cur_flist->ndx_start >= next_loopchk) {
2268 maybe_send_keepalive();
2270 maybe_flush_socket(0);
2271 next_loopchk += loopchk_limit;
2276 write_ndx(f_out, NDX_DONE);
2281 check_for_finished_files(itemizing, code, 1);
2282 if (cur_flist->next || flist_eof)
2284 wait_for_receiver();
2286 } while ((cur_flist = cur_flist->next) != NULL);
2289 delete_in_dir(NULL, NULL, &dev_zero);
2291 if (DEBUG_GTE(GENR, 1))
2292 rprintf(FINFO, "generate_files phase=%d\n", phase);
2295 check_for_finished_files(itemizing, code, 1);
2298 wait_for_receiver();
2302 if (DEBUG_GTE(GENR, 1))
2303 rprintf(FINFO, "generate_files phase=%d\n", phase);
2305 write_ndx(f_out, NDX_DONE);
2306 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2307 if (protocol_version >= 29 && !delay_updates)
2308 write_ndx(f_out, NDX_DONE);
2310 /* Read MSG_DONE for the redo phase (and any prior messages). */
2312 check_for_finished_files(itemizing, code, 0);
2313 if (msgdone_cnt > 1)
2315 wait_for_receiver();
2318 if (protocol_version >= 29) {
2320 if (DEBUG_GTE(GENR, 1))
2321 rprintf(FINFO, "generate_files phase=%d\n", phase);
2323 write_ndx(f_out, NDX_DONE);
2324 /* Read MSG_DONE for delay-updates phase & prior messages. */
2325 while (msgdone_cnt == 2)
2326 wait_for_receiver();
2329 info_levels[INFO_FLIST] = save_info_flist;
2330 info_levels[INFO_PROGRESS] = save_info_progress;
2332 if (delete_during == 2)
2333 do_delayed_deletions(fbuf);
2334 if (delete_after && !solo_file && file_total > 0)
2337 if ((need_retouch_dir_perms || need_retouch_dir_times)
2338 && dir_tweaking && (!inc_recurse || delete_during == 2))
2339 touch_up_dirs(dir_flist, -1);
2341 if (max_delete >= 0 && deletion_count > max_delete) {
2343 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2344 deletion_count - max_delete);
2345 io_error |= IOERR_DEL_LIMIT;
2348 if (DEBUG_GTE(GENR, 1))
2349 rprintf(FINFO, "generate_files finished\n");