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 /* In Peach's use case, we want to move a deleted directory
186 * even if it contains (protected) previous backup files. */
187 if (make_backups < 2 && (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT))
189 /* OK: try to delete the directory. */
192 if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && ++deletion_count > max_delete)
195 if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))
196 /* Allow a dir to be backed up as a whole? */
197 && (make_backups >= 2 || !S_ISDIR(mode))) {
198 what = "make_backup";
199 ok = make_backup(fbuf);
200 } else if (S_ISDIR(mode)) {
202 ok = do_rmdir(fbuf) == 0;
205 ok = robust_unlink(fbuf) == 0;
209 if (!(flags & DEL_MAKE_ROOM))
210 log_delete(fbuf, mode);
213 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
214 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
217 } else if (errno != ENOENT) {
218 rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
228 if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
230 switch (flags & DEL_MAKE_ROOM) {
231 case DEL_FOR_FILE: desc = "regular file"; break;
232 case DEL_FOR_DIR: desc = "directory"; break;
233 case DEL_FOR_SYMLINK: desc = "symlink"; break;
234 case DEL_FOR_DEVICE: desc = "device file"; break;
235 case DEL_FOR_SPECIAL: desc = "special file"; break;
236 default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
238 rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
244 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
245 * its contents, otherwise just checks for content. Returns DR_SUCCESS or
246 * DR_NOT_EMPTY. Note that fname must point to a MAXPATHLEN buffer! (The
247 * buffer is used for recursion, but returned unchanged.)
249 static enum delret delete_dir_contents(char *fname, uint16 flags)
251 struct file_list *dirlist;
258 if (DEBUG_GTE(DEL, 3)) {
259 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
263 dlen = strlen(fname);
264 save_filters = push_local_filters(fname, dlen);
266 non_perishable_cnt = 0;
267 dirlist = get_dirlist(fname, dlen, 0);
268 ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
273 if (!(flags & DEL_RECURSE)) {
279 if (dlen != 1 || *fname != '/')
281 remainder = MAXPATHLEN - (p - fname);
283 /* We do our own recursion, so make delete_item() non-recursive. */
284 flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
287 for (j = dirlist->used; j--; ) {
288 struct file_struct *fp = dirlist->files[j];
290 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
291 if (DEBUG_GTE(DEL, 1)) {
293 "mount point, %s, pins parent directory\n",
300 strlcpy(p, fp->basename, remainder);
301 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
302 do_chmod(fname, fp->mode | S_IWUSR);
303 /* Save stack by recursing to ourself directly. */
304 if (S_ISDIR(fp->mode)) {
305 if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
308 if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
316 pop_local_filters(save_filters);
318 if (ret == DR_NOT_EMPTY) {
319 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
325 static int start_delete_delay_temp(void)
327 char fnametmp[MAXPATHLEN];
328 int save_dry_run = dry_run;
331 if (!get_tmpname(fnametmp, "deldelay")
332 || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
333 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
334 inc_recurse ? "" : " -- switching to --delete-after");
336 delete_after = !inc_recurse;
337 dry_run = save_dry_run;
341 dry_run = save_dry_run;
345 static int flush_delete_delay(void)
347 if (deldelay_fd < 0 && !start_delete_delay_temp())
349 if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
350 rsyserr(FERROR, errno, "flush of delete-delay buffer");
352 delete_after = !inc_recurse;
360 static int remember_delete(struct file_struct *file, const char *fname, int flags)
364 if (deldelay_cnt == deldelay_size && !flush_delete_delay())
367 if (flags & DEL_NO_UID_WRITE)
368 deldelay_buf[deldelay_cnt++] = '!';
371 len = snprintf(deldelay_buf + deldelay_cnt,
372 deldelay_size - deldelay_cnt,
374 (int)file->mode, fname, '\0');
375 if ((deldelay_cnt += len) <= deldelay_size)
378 if (!flush_delete_delay())
385 static int read_delay_line(char *buf, int *flags_p)
387 static int read_pos = 0;
389 char *bp, *past_space;
392 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
393 if (j < deldelay_cnt)
395 if (deldelay_fd < 0) {
400 deldelay_cnt -= read_pos;
401 if (deldelay_cnt == deldelay_size)
403 if (deldelay_cnt && read_pos) {
404 memmove(deldelay_buf, deldelay_buf + read_pos,
407 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
408 deldelay_size - deldelay_cnt);
412 "ERROR: unexpected EOF in delete-delay file.\n");
417 rsyserr(FERROR, errno,
418 "reading delete-delay file");
425 bp = deldelay_buf + read_pos;
428 *flags_p = DEL_NO_UID_WRITE;
432 if (sscanf(bp, "%x ", &mode) != 1) {
434 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
437 past_space = strchr(bp, ' ') + 1;
438 len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
441 if (len > MAXPATHLEN) {
442 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
446 /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
447 * instead of returning a pointer to our buffer. */
448 memcpy(buf, past_space, len);
453 static void do_delayed_deletions(char *delbuf)
457 if (deldelay_fd >= 0) {
458 if (deldelay_cnt && !flush_delete_delay())
460 lseek(deldelay_fd, 0, 0);
462 while ((mode = read_delay_line(delbuf, &flags)) >= 0)
463 delete_item(delbuf, mode, flags | DEL_RECURSE);
464 if (deldelay_fd >= 0)
468 /* This function is used to implement per-directory deletion, and is used by
469 * all the --delete-WHEN options. Note that the fbuf pointer must point to a
470 * MAXPATHLEN buffer with the name of the directory in it (the functions we
471 * call will append names onto the end, but the old dir value will be restored
473 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
475 static int already_warned = 0;
476 struct file_list *dirlist;
477 char delbuf[MAXPATHLEN];
479 int save_uid_ndx = uid_ndx;
482 change_local_filter_dir(NULL, 0, 0);
486 if (DEBUG_GTE(DEL, 2))
487 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
490 maybe_send_keepalive();
492 if (io_error && !ignore_errors) {
496 "IO error encountered -- skipping file deletion\n");
502 change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
504 if (one_file_system) {
505 if (file->flags & FLAG_TOP_DIR)
506 filesystem_dev = *fs_dev;
507 else if (filesystem_dev != *fs_dev)
512 uid_ndx = ++file_extra_cnt;
514 dirlist = get_dirlist(fbuf, dlen, 0);
516 /* If an item in dirlist is not found in flist, delete it
517 * from the filesystem. */
518 for (i = dirlist->used; i--; ) {
519 struct file_struct *fp = dirlist->files[i];
520 if (!F_IS_ACTIVE(fp))
522 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
523 if (INFO_GTE(MOUNT, 1))
524 rprintf(FINFO, "cannot delete mount point: %s\n",
528 if (flist_find(cur_flist, fp) < 0) {
529 int flags = DEL_RECURSE;
530 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
531 flags |= DEL_NO_UID_WRITE;
533 if (delete_during == 2) {
534 if (!remember_delete(fp, delbuf, flags))
537 delete_item(delbuf, fp->mode, flags);
549 /* This deletes any files on the receiving side that are not present on the
550 * sending side. This is used by --delete-before and --delete-after. */
551 static void do_delete_pass(void)
553 char fbuf[MAXPATHLEN];
557 /* dry_run is incremented when the destination doesn't exist yet. */
558 if (dry_run > 1 || list_only)
561 for (j = 0; j < cur_flist->used; j++) {
562 struct file_struct *file = cur_flist->sorted[j];
566 if (!(file->flags & FLAG_CONTENT_DIR)) {
567 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
571 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
572 rprintf(FINFO, "deleting in %s\n", fbuf);
574 if (link_stat(fbuf, &st, keep_dirlinks) < 0
575 || !S_ISDIR(st.st_mode))
578 delete_in_dir(fbuf, file, &st.st_dev);
580 delete_in_dir(NULL, NULL, &dev_zero);
582 if (INFO_GTE(FLIST, 2) && !am_server)
583 rprintf(FINFO, " \r");
586 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
588 #if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
589 if (S_ISLNK(file->mode)) {
593 if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
596 if (preserve_perms) {
597 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
599 } else if (preserve_executability
600 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
603 if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
606 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
610 if (preserve_acls && !S_ISLNK(file->mode)) {
611 if (!ACL_READY(*sxp))
613 if (set_acl(NULL, file, sxp) == 0)
617 #ifdef SUPPORT_XATTRS
618 if (preserve_xattrs) {
619 if (!XATTR_READY(*sxp))
620 get_xattr(fname, sxp);
621 if (xattr_diff(file, sxp, 0))
629 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
630 stat_x *sxp, int32 iflags, uchar fnamecmp_type,
633 if (statret >= 0) { /* A from-dest-dir statret can == 1! */
634 int keep_time = !preserve_times ? 0
635 : S_ISDIR(file->mode) ? preserve_times > 1 :
636 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
639 !S_ISLNK(file->mode);
642 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
643 iflags |= ITEM_REPORT_SIZE;
644 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
645 if (iflags & ITEM_LOCAL_CHANGE)
646 iflags |= symlink_timeset_failed_flags;
648 ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
649 : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
650 && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
651 iflags |= ITEM_REPORT_TIME;
652 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
653 if (S_ISLNK(file->mode)) {
657 if (preserve_perms) {
658 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
659 iflags |= ITEM_REPORT_PERMS;
660 } else if (preserve_executability
661 && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
662 iflags |= ITEM_REPORT_PERMS;
663 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
664 iflags |= ITEM_REPORT_OWNER;
665 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
666 && sxp->st.st_gid != (gid_t)F_GROUP(file))
667 iflags |= ITEM_REPORT_GROUP;
669 if (preserve_acls && !S_ISLNK(file->mode)) {
670 if (!ACL_READY(*sxp))
671 get_acl(fnamecmp, sxp);
672 if (set_acl(NULL, file, sxp) == 0)
673 iflags |= ITEM_REPORT_ACL;
676 #ifdef SUPPORT_XATTRS
677 if (preserve_xattrs) {
678 if (!XATTR_READY(*sxp))
679 get_xattr(fnamecmp, sxp);
680 if (xattr_diff(file, sxp, 1))
681 iflags |= ITEM_REPORT_XATTR;
685 #ifdef SUPPORT_XATTRS
686 if (preserve_xattrs && xattr_diff(file, NULL, 1))
687 iflags |= ITEM_REPORT_XATTR;
689 iflags |= ITEM_IS_NEW;
693 if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
694 || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
695 if (protocol_version >= 29) {
697 write_ndx(sock_f_out, ndx);
698 write_shortint(sock_f_out, iflags);
699 if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
700 write_byte(sock_f_out, fnamecmp_type);
701 if (iflags & ITEM_XNAME_FOLLOWS)
702 write_vstring(sock_f_out, xname, strlen(xname));
703 #ifdef SUPPORT_XATTRS
704 if (preserve_xattrs && !dry_run
705 && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
706 send_xattr_request(NULL, file,
707 iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
710 } else if (ndx >= 0) {
711 enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
712 log_item(code, file, &stats, iflags, xname);
718 /* Perform our quick-check heuristic for determining if a file is unchanged. */
719 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
721 if (st->st_size != F_LENGTH(file))
724 /* if always checksum is set then we use the checksum instead
725 of the file time to determine whether to sync */
726 if (always_checksum > 0 && S_ISREG(st->st_mode)) {
727 char sum[MAX_DIGEST_LEN];
728 file_checksum(fn, sum, st->st_size);
729 return memcmp(sum, F_SUM(file), checksum_len) == 0;
738 return cmp_time(st->st_mtime, file->modtime) == 0;
743 * set (initialize) the size entries in the per-file sum_struct
744 * calculating dynamic block and checksum sizes.
746 * This is only called from generate_and_send_sums() but is a separate
747 * function to encapsulate the logic.
749 * The block size is a rounded square root of file length.
751 * The checksum size is determined according to:
752 * blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
753 * provided by Donovan Baarda which gives a probability of rsync
754 * algorithm corrupting data and falling back using the whole md4
757 * This might be made one of several selectable heuristics.
759 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
766 blength = block_size;
767 else if (len <= BLOCK_SIZE * BLOCK_SIZE)
768 blength = BLOCK_SIZE;
770 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
773 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
774 if (c < 0 || c >= max_blength)
775 blength = max_blength;
780 if (len < (int64)blength * blength)
783 } while (c >= 8); /* round to multiple of 8 */
784 blength = MAX(blength, BLOCK_SIZE);
788 if (protocol_version < 27) {
789 s2length = csum_length;
790 } else if (csum_length == SUM_LENGTH) {
791 s2length = SUM_LENGTH;
794 int b = BLOCKSUM_BIAS;
795 for (l = len; l >>= 1; b += 2) {}
796 for (c = blength; (c >>= 1) && b; b--) {}
797 /* add a bit, subtract rollsum, round up. */
798 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
799 s2length = MAX(s2length, csum_length);
800 s2length = MIN(s2length, SUM_LENGTH);
804 sum->blength = blength;
805 sum->s2length = s2length;
806 sum->remainder = (int32)(len % blength);
807 sum->count = (int32)(l = (len / blength) + (sum->remainder != 0));
809 if ((int64)sum->count != l)
812 if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
814 "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
815 big_num(sum->count), (long)sum->remainder, (long)sum->blength,
816 sum->s2length, big_num(sum->flength));
822 * Generate and send a stream of signatures/checksums that describe a buffer
824 * Generate approximately one checksum every block_len bytes.
826 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
829 struct map_struct *mapbuf;
830 struct sum_struct sum;
833 sum_sizes_sqroot(&sum, len);
836 write_sum_head(f_out, &sum);
838 if (append_mode > 0 && f_copy < 0)
842 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
846 for (i = 0; i < sum.count; i++) {
847 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
848 char *map = map_ptr(mapbuf, offset, n1);
849 char sum2[SUM_LENGTH];
856 full_write(f_copy, map, n1);
861 sum1 = get_checksum1(map, n1);
862 get_checksum2(map, n1, sum2);
864 if (DEBUG_GTE(DELTASUM, 3)) {
866 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
867 big_num(i), big_num(offset - n1), (long)n1,
868 (unsigned long)sum1);
870 write_int(f_out, sum1);
871 write_buf(f_out, sum2, sum.s2length);
881 /* Try to find a filename in the same dir as "fname" with a similar name. */
882 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
884 int fname_len, fname_suf_len;
885 const char *fname_suf, *fname = file->basename;
886 uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
887 int j, lowest_j = -1;
889 fname_len = strlen(fname);
890 fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
892 for (j = 0; j < dirlist->used; j++) {
893 struct file_struct *fp = dirlist->files[j];
894 const char *suf, *name;
898 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
899 || fp->flags & FLAG_FILE_SENT)
904 if (F_LENGTH(fp) == F_LENGTH(file)
905 && cmp_time(fp->modtime, file->modtime) == 0) {
906 if (DEBUG_GTE(FUZZY, 2)) {
908 "fuzzy size/modtime match for %s\n",
915 suf = find_filename_suffix(name, len, &suf_len);
917 dist = fuzzy_distance(name, len, fname, fname_len);
918 /* Add some extra weight to how well the suffixes match. */
919 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
921 if (DEBUG_GTE(FUZZY, 2)) {
922 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
923 name, (int)(dist>>16), (int)(dist&0xFFFF));
925 if (dist <= lowest_dist) {
934 /* Copy a file found in our --copy-dest handling. */
935 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
937 char buf[MAXPATHLEN];
938 const char *copy_to, *partialptr;
939 int save_preserve_xattrs = preserve_xattrs;
943 /* Let copy_file open the destination in place. */
947 fd_w = open_tmpfile(buf, dest, file);
952 cleanup_set(copy_to, NULL, NULL, -1, -1);
953 if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
954 if (INFO_GTE(COPY, 1)) {
955 rsyserr(FINFO, errno, "copy_file %s => %s",
956 full_fname(src), copy_to);
958 /* Try to clean up. */
963 partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
964 preserve_xattrs = 0; /* xattrs were copied with file */
965 ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
966 preserve_xattrs = save_preserve_xattrs;
971 /* This is only called for regular files. We return -2 if we've finished
972 * handling the file, -1 if no dest-linking occurred, or a non-negative
973 * value if we found an alternate basis file. */
974 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
975 char *cmpbuf, stat_x *sxp, int itemizing,
983 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
984 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
986 switch (match_level) {
992 if (!unchanged_file(cmpbuf, file, &sxp->st))
998 if (!unchanged_attrs(cmpbuf, file, sxp))
1005 } while (basis_dir[++j] != NULL);
1010 if (j != best_match) {
1012 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1013 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1017 if (match_level == 3 && !copy_dest) {
1018 #ifdef SUPPORT_HARD_LINKS
1020 if (!hard_link_one(file, fname, cmpbuf, 1))
1022 if (preserve_hard_links && F_IS_HLINKED(file))
1023 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1024 if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1025 itemize(cmpbuf, file, ndx, 1, sxp,
1026 ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1032 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1033 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
1034 rprintf(FCLIENT, "%s is uptodate\n", fname);
1038 if (match_level >= 2) {
1039 #ifdef SUPPORT_HARD_LINKS
1040 try_a_copy: /* Copy the file locally. */
1042 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1045 itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1046 if (maybe_ATTRS_REPORT
1047 && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
1048 || (INFO_GTE(NAME, 2) && match_level == 3))) {
1049 code = match_level == 3 ? FCLIENT : FINFO;
1050 rprintf(code, "%s%s\n", fname,
1051 match_level == 3 ? " is uptodate" : "");
1053 #ifdef SUPPORT_HARD_LINKS
1054 if (preserve_hard_links && F_IS_HLINKED(file))
1055 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1060 return FNAMECMP_BASIS_DIR_LOW + j;
1063 /* This is only called for non-regular files. We return -2 if we've finished
1064 * handling the file, or -1 if no dest-linking occurred, or a non-negative
1065 * value if we found an alternate basis file. */
1066 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1067 char *cmpbuf, stat_x *sxp, int itemizing,
1070 char lnk[MAXPATHLEN];
1071 int best_match = -1;
1072 int match_level = 0;
1073 enum nonregtype type;
1077 #ifndef SUPPORT_LINKS
1078 if (S_ISLNK(file->mode))
1081 if (S_ISDIR(file->mode)) {
1083 } else if (IS_SPECIAL(file->mode))
1084 type = TYPE_SPECIAL;
1085 else if (IS_DEVICE(file->mode))
1087 #ifdef SUPPORT_LINKS
1088 else if (S_ISLNK(file->mode))
1089 type = TYPE_SYMLINK;
1093 "internal: try_dests_non() called with invalid mode (%o)\n",
1095 exit_cleanup(RERR_UNSUPPORTED);
1099 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1100 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1104 if (!S_ISDIR(sxp->st.st_mode))
1108 if (!IS_SPECIAL(sxp->st.st_mode))
1112 if (!IS_DEVICE(sxp->st.st_mode))
1115 #ifdef SUPPORT_LINKS
1117 if (!S_ISLNK(sxp->st.st_mode))
1122 if (match_level < 1) {
1131 devp = F_RDEV_P(file);
1132 if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1135 #ifdef SUPPORT_LINKS
1137 if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1140 if (strcmp(lnk, F_SYMLINK(file)) != 0)
1145 if (match_level < 2) {
1149 if (unchanged_attrs(cmpbuf, file, sxp)) {
1154 } while (basis_dir[++j] != NULL);
1159 if (j != best_match) {
1161 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1162 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1166 if (match_level == 3) {
1167 #ifdef SUPPORT_HARD_LINKS
1169 #ifndef CAN_HARDLINK_SYMLINK
1170 && !S_ISLNK(file->mode)
1172 #ifndef CAN_HARDLINK_SPECIAL
1173 && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1175 && !S_ISDIR(file->mode)) {
1176 if (do_link(cmpbuf, fname) < 0) {
1177 rsyserr(FERROR_XFER, errno,
1178 "failed to hard-link %s with %s",
1182 if (preserve_hard_links && F_IS_HLINKED(file))
1183 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1187 if (itemizing && stdout_format_has_i
1188 && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1189 int chg = compare_dest && type != TYPE_DIR ? 0
1190 : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1191 char *lp = match_level == 3 ? "" : NULL;
1192 itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1194 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1195 rprintf(FCLIENT, "%s%s is uptodate\n",
1196 fname, type == TYPE_DIR ? "/" : "");
1204 static void list_file_entry(struct file_struct *f)
1206 char permbuf[PERMSTRING_SIZE];
1208 int colwidth = human_readable ? 14 : 11;
1210 if (!F_IS_ACTIVE(f)) {
1211 /* this can happen if duplicate names were removed */
1215 permstring(permbuf, f->mode);
1218 /* TODO: indicate '+' if the entry has an ACL. */
1220 #ifdef SUPPORT_LINKS
1221 if (preserve_links && S_ISLNK(f->mode)) {
1222 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1223 permbuf, colwidth, comma_num(len),
1224 timestring(f->modtime), f_name(f, NULL),
1229 rprintf(FINFO, "%s %*s %s %s\n",
1230 permbuf, colwidth, comma_num(len),
1231 timestring(f->modtime), f_name(f, NULL));
1235 static int phase = 0;
1236 static int dflt_perms;
1238 static int implied_dirs_are_missing;
1239 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1240 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1242 return F_DEPTH(file) > F_DEPTH(subtree)
1243 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1246 /* Acts on the indicated item in cur_flist whose name is fname. If a dir,
1247 * make sure it exists, and has the right permissions/timestamp info. For
1248 * all other non-regular files (symlinks, etc.) we create them here. For
1249 * regular files that have changed, we try to find a basis file and then
1250 * start sending checksums. The ndx is the file's unique index value.
1252 * The fname parameter must point to a MAXPATHLEN buffer! (e.g it gets
1253 * passed to delete_item(), which can use it during a recursive delete.)
1255 * Note that f_out is set to -1 when doing final directory-permission and
1256 * modification-time repair. */
1257 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1258 int itemizing, enum logcode code, int f_out)
1260 static const char *parent_dirname = "";
1261 /* Missing dir not created due to --dry-run; will still be scanned. */
1262 static struct file_struct *dry_missing_dir = NULL;
1263 /* Missing dir whose contents are skipped altogether due to
1264 * --ignore-non-existing, daemon exclude, or mkdir failure. */
1265 static struct file_struct *skip_dir = NULL;
1266 static struct file_list *fuzzy_dirlist = NULL;
1267 static int need_fuzzy_dirlist = 0;
1268 struct file_struct *fuzzy_file = NULL;
1269 int fd = -1, f_copy = -1;
1271 STRUCT_STAT partial_st;
1272 struct file_struct *back_file = NULL;
1273 int statret, real_ret, stat_errno;
1274 char *fnamecmp, *partialptr, *backupptr = NULL;
1275 char fnamecmpbuf[MAXPATHLEN];
1276 uchar fnamecmp_type;
1277 int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1278 int is_dir = !S_ISDIR(file->mode) ? 0
1279 : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1282 if (DEBUG_GTE(GENR, 1))
1283 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1287 || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1289 list_file_entry(file);
1294 if (is_below(file, skip_dir)) {
1296 file->flags |= FLAG_MISSING_DIR;
1297 #ifdef SUPPORT_HARD_LINKS
1298 else if (F_IS_HLINKED(file))
1299 handle_skipped_hlink(file, itemizing, code, f_out);
1306 if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1307 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1310 #ifdef SUPPORT_HARD_LINKS
1311 if (F_IS_HLINKED(file))
1312 handle_skipped_hlink(file, itemizing, code, f_out);
1314 rprintf(FERROR_XFER,
1315 "skipping daemon-excluded %s \"%s\"\n",
1316 is_dir ? "directory" : "file", fname);
1318 goto skipping_dir_contents;
1324 sx.acc_acl = sx.def_acl = NULL;
1326 #ifdef SUPPORT_XATTRS
1329 if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1330 parent_is_dry_missing:
1331 if (fuzzy_dirlist) {
1332 flist_free(fuzzy_dirlist);
1333 fuzzy_dirlist = NULL;
1335 parent_dirname = "";
1337 stat_errno = ENOENT;
1339 const char *dn = file->dirname ? file->dirname : ".";
1340 dry_missing_dir = NULL;
1341 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1342 if (relative_paths && !implied_dirs
1343 && do_stat(dn, &sx.st) < 0) {
1345 goto parent_is_dry_missing;
1346 if (create_directory_path(fname) < 0) {
1347 rsyserr(FERROR_XFER, errno,
1348 "recv_generator: mkdir %s failed",
1352 if (fuzzy_dirlist) {
1353 flist_free(fuzzy_dirlist);
1354 fuzzy_dirlist = NULL;
1357 need_fuzzy_dirlist = 1;
1359 if (!preserve_perms)
1360 dflt_perms = default_perms_for_dir(dn);
1363 parent_dirname = dn;
1365 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1366 strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1367 fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1368 need_fuzzy_dirlist = 0;
1371 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1375 if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1380 file->flags |= FLAG_MISSING_DIR;
1382 #ifdef SUPPORT_HARD_LINKS
1383 else if (F_IS_HLINKED(file))
1384 handle_skipped_hlink(file, itemizing, code, f_out);
1386 if (INFO_GTE(SKIP, 1)) {
1387 rprintf(FINFO, "not creating new %s \"%s\"\n",
1388 is_dir ? "directory" : "file", fname);
1393 if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1394 && !am_root && sx.st.st_uid == our_uid)
1395 del_opts |= DEL_NO_UID_WRITE;
1397 if (ignore_existing > 0 && statret == 0
1398 && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1399 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1400 rprintf(FINFO, "%s exists\n", fname);
1401 #ifdef SUPPORT_HARD_LINKS
1402 if (F_IS_HLINKED(file))
1403 handle_skipped_hlink(file, itemizing, code, f_out);
1409 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1412 /* In inc_recurse mode we want to make sure any missing
1413 * directories get created while we're still processing
1414 * the parent dir (which allows us to touch the parent
1415 * dir's mtime right away). We will handle the dir in
1416 * full later (right before we handle its contents). */
1418 && (S_ISDIR(sx.st.st_mode)
1419 || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1420 goto cleanup; /* Any errors get reported later. */
1421 if (do_mkdir(fname, file->mode & 0700) == 0)
1422 file->flags |= FLAG_DIR_CREATED;
1425 /* The file to be received is a directory, so we need
1426 * to prepare appropriately. If there is already a
1427 * file of that name and it is *not* a directory, then
1428 * we need to delete it. If it doesn't exist, then
1429 * (perhaps recursively) create it. */
1430 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1431 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1432 goto skipping_dir_contents;
1435 if (dry_run && statret != 0) {
1436 if (!dry_missing_dir)
1437 dry_missing_dir = file;
1438 file->flags |= FLAG_MISSING_DIR;
1442 if (file->flags & FLAG_DIR_CREATED)
1444 if (!preserve_perms) { /* See comment in non-dir code below. */
1445 file->mode = dest_mode(file->mode, sx.st.st_mode,
1446 dflt_perms, statret == 0);
1448 if (statret != 0 && basis_dir[0] != NULL) {
1449 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1458 if (itemizing && f_out != -1) {
1459 itemize(fname, file, ndx, statret, &sx,
1460 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1462 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1463 if (!relative_paths || errno != ENOENT
1464 || create_directory_path(fname) < 0
1465 || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1466 rsyserr(FERROR_XFER, errno,
1467 "recv_generator: mkdir %s failed",
1469 skipping_dir_contents:
1471 "*** Skipping any contents from this failed directory ***\n");
1473 file->flags |= FLAG_MISSING_DIR;
1477 #ifdef SUPPORT_XATTRS
1478 if (preserve_xattrs && statret == 1)
1479 copy_xattrs(fnamecmpbuf, fname);
1481 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1482 && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1483 rprintf(code, "%s/\n", fname);
1485 /* We need to ensure that the dirs in the transfer have writable
1486 * permissions during the time we are putting files within them.
1487 * This is then fixed after the transfer is done. */
1489 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1490 mode_t mode = file->mode | S_IWUSR;
1491 if (do_chmod(fname, mode) < 0) {
1492 rsyserr(FERROR_XFER, errno,
1493 "failed to modify permissions on %s",
1496 need_retouch_dir_perms = 1;
1500 if (real_ret != 0 && one_file_system)
1501 real_sx.st.st_dev = filesystem_dev;
1503 if (one_file_system) {
1504 uint32 *devp = F_DIR_DEV_P(file);
1505 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1506 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1509 else if (delete_during && f_out != -1 && !phase
1510 && !(file->flags & FLAG_MISSING_DIR)) {
1511 if (file->flags & FLAG_CONTENT_DIR)
1512 delete_in_dir(fname, file, &real_sx.st.st_dev);
1514 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1519 /* If we're not preserving permissions, change the file-list's
1520 * mode based on the local permissions and some heuristics. */
1521 if (!preserve_perms) {
1522 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1523 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1527 #ifdef SUPPORT_HARD_LINKS
1528 if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1529 && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1533 if (preserve_links && S_ISLNK(file->mode)) {
1534 #ifdef SUPPORT_LINKS
1535 const char *sl = F_SYMLINK(file);
1536 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1537 if (INFO_GTE(NAME, 1)) {
1539 fname = f_name(file, NULL);
1541 "ignoring unsafe symlink %s -> \"%s\"\n",
1542 full_fname(fname), sl);
1547 char lnk[MAXPATHLEN];
1550 if (!S_ISLNK(sx.st.st_mode))
1552 else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1553 && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1554 /* The link is pointing to the right place. */
1555 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1557 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1558 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1559 if (preserve_hard_links && F_IS_HLINKED(file))
1560 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1562 if (remove_source_files == 1)
1563 goto return_with_success;
1566 /* Not the right symlink (or not a symlink), so
1568 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1570 } else if (basis_dir[0] != NULL) {
1571 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1574 #ifndef CAN_HARDLINK_SYMLINK
1576 /* Resort to --copy-dest behavior. */
1586 #ifdef SUPPORT_HARD_LINKS
1587 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1588 cur_flist->in_progress++;
1592 if (do_symlink(sl, fname) != 0) {
1593 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1594 full_fname(fname), sl);
1596 set_file_attrs(fname, file, NULL, NULL, 0);
1598 itemize(fname, file, ndx, statret, &sx,
1599 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1601 if (code != FNONE && INFO_GTE(NAME, 1))
1602 rprintf(code, "%s -> %s\n", fname, sl);
1603 #ifdef SUPPORT_HARD_LINKS
1604 if (preserve_hard_links && F_IS_HLINKED(file))
1605 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1607 /* This does not check remove_source_files == 1
1608 * because this is one of the items that the old
1609 * --remove-sent-files option would remove. */
1610 if (remove_source_files)
1611 goto return_with_success;
1617 if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1618 || (preserve_specials && IS_SPECIAL(file->mode))) {
1619 uint32 *devp = F_RDEV_P(file);
1620 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1623 if (IS_DEVICE(file->mode)) {
1624 if (!IS_DEVICE(sx.st.st_mode))
1626 del_for_flag = DEL_FOR_DEVICE;
1628 if (!IS_SPECIAL(sx.st.st_mode))
1630 del_for_flag = DEL_FOR_SPECIAL;
1633 && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1634 && sx.st.st_rdev == rdev) {
1635 /* The device or special file is identical. */
1636 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1638 itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1639 #ifdef SUPPORT_HARD_LINKS
1640 if (preserve_hard_links && F_IS_HLINKED(file))
1641 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1643 if (remove_source_files == 1)
1644 goto return_with_success;
1647 if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1649 } else if (basis_dir[0] != NULL) {
1650 int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1653 #ifndef CAN_HARDLINK_SPECIAL
1655 /* Resort to --copy-dest behavior. */
1665 #ifdef SUPPORT_HARD_LINKS
1666 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1667 cur_flist->in_progress++;
1671 if (DEBUG_GTE(GENR, 1)) {
1672 rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1673 fname, (int)file->mode,
1674 (long)major(rdev), (long)minor(rdev));
1676 if (do_mknod(fname, file->mode, rdev) < 0) {
1677 rsyserr(FERROR_XFER, errno, "mknod %s failed",
1680 set_file_attrs(fname, file, NULL, NULL, 0);
1682 itemize(fname, file, ndx, statret, &sx,
1683 ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1685 if (code != FNONE && INFO_GTE(NAME, 1))
1686 rprintf(code, "%s\n", fname);
1687 #ifdef SUPPORT_HARD_LINKS
1688 if (preserve_hard_links && F_IS_HLINKED(file))
1689 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1691 if (remove_source_files == 1)
1692 goto return_with_success;
1697 if (!S_ISREG(file->mode)) {
1699 fname = f_name(file, NULL);
1700 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1704 if (max_size > 0 && F_LENGTH(file) > max_size) {
1705 if (INFO_GTE(SKIP, 1)) {
1707 fname = f_name(file, NULL);
1708 rprintf(FINFO, "%s is over max-size\n", fname);
1712 if (min_size > 0 && F_LENGTH(file) < min_size) {
1713 if (INFO_GTE(SKIP, 1)) {
1715 fname = f_name(file, NULL);
1716 rprintf(FINFO, "%s is under min-size\n", fname);
1721 if (update_only > 0 && statret == 0
1722 && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1723 if (INFO_GTE(SKIP, 1))
1724 rprintf(FINFO, "%s is newer\n", fname);
1725 #ifdef SUPPORT_HARD_LINKS
1726 if (F_IS_HLINKED(file))
1727 handle_skipped_hlink(file, itemizing, code, f_out);
1733 fnamecmp_type = FNAMECMP_FNAME;
1735 if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1736 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1739 stat_errno = ENOENT;
1742 if (statret != 0 && basis_dir[0] != NULL) {
1743 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1746 if (remove_source_files == 1)
1747 goto return_with_success;
1751 fnamecmp = fnamecmpbuf;
1760 if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1761 && link_stat(partialptr, &partial_st, 0) == 0
1762 && S_ISREG(partial_st.st_mode)) {
1764 goto prepare_to_open;
1768 if (statret != 0 && fuzzy_dirlist) {
1769 int j = find_fuzzy(file, fuzzy_dirlist);
1771 fuzzy_file = fuzzy_dirlist->files[j];
1772 f_name(fuzzy_file, fnamecmpbuf);
1773 if (DEBUG_GTE(FUZZY, 1)) {
1774 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1775 fname, fnamecmpbuf);
1777 sx.st.st_size = F_LENGTH(fuzzy_file);
1779 fnamecmp = fnamecmpbuf;
1780 fnamecmp_type = FNAMECMP_FUZZY;
1785 #ifdef SUPPORT_HARD_LINKS
1786 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1787 cur_flist->in_progress++;
1791 if (stat_errno == ENOENT)
1793 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1798 if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1800 else if (fnamecmp_type == FNAMECMP_FUZZY)
1802 else if (unchanged_file(fnamecmp, file, &sx.st)) {
1804 do_unlink(partialptr);
1805 handle_partial_dir(partialptr, PDIR_DELETE);
1807 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1809 itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1810 #ifdef SUPPORT_HARD_LINKS
1811 if (preserve_hard_links && F_IS_HLINKED(file))
1812 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1814 if (remove_source_files != 1)
1816 return_with_success:
1818 send_msg_int(MSG_SUCCESS, ndx);
1822 if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1823 #ifdef SUPPORT_HARD_LINKS
1824 if (F_IS_HLINKED(file))
1825 handle_skipped_hlink(file, itemizing, code, f_out);
1833 fnamecmp = partialptr;
1834 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1841 if (read_batch || whole_file) {
1842 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1843 if (!(backupptr = get_backup_name(fname)))
1845 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1846 goto pretend_missing;
1847 if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1848 unmake_file(back_file);
1856 if (fuzzy_dirlist) {
1857 int j = flist_find(fuzzy_dirlist, file);
1858 if (j >= 0) /* don't use changing file as future fuzzy basis */
1859 fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1863 if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1864 rsyserr(FERROR, errno, "failed to open %s, continuing",
1865 full_fname(fnamecmp));
1867 /* pretend the file didn't exist */
1868 #ifdef SUPPORT_HARD_LINKS
1869 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1870 cur_flist->in_progress++;
1874 statret = real_ret = -1;
1878 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1879 if (!(backupptr = get_backup_name(fname))) {
1883 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1885 goto pretend_missing;
1887 if (robust_unlink(backupptr) && errno != ENOENT) {
1888 rsyserr(FERROR_XFER, errno, "unlink %s",
1889 full_fname(backupptr));
1890 unmake_file(back_file);
1895 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1896 int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1897 if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1898 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1899 save_errno = errno ? errno : save_errno;
1904 rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1905 unmake_file(back_file);
1911 fnamecmp_type = FNAMECMP_BACKUP;
1914 if (DEBUG_GTE(DELTASUM, 3)) {
1915 rprintf(FINFO, "gen mapped %s of size %s\n",
1916 fnamecmp, big_num(sx.st.st_size));
1919 if (DEBUG_GTE(DELTASUM, 2))
1920 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1923 if (remove_source_files && !delay_updates && !phase && !dry_run)
1924 increment_active_files(ndx, itemizing, code);
1925 if (inc_recurse && !dry_run)
1926 cur_flist->in_progress++;
1927 #ifdef SUPPORT_HARD_LINKS
1928 if (preserve_hard_links && F_IS_HLINKED(file))
1929 file->flags |= FLAG_FILE_SENT;
1931 write_ndx(f_out, ndx);
1933 int iflags = ITEM_TRANSFER;
1934 if (always_checksum > 0)
1935 iflags |= ITEM_REPORT_CHANGE;
1936 if (fnamecmp_type != FNAMECMP_FNAME)
1937 iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1938 if (fnamecmp_type == FNAMECMP_FUZZY)
1939 iflags |= ITEM_XNAME_FOLLOWS;
1940 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1941 fuzzy_file ? fuzzy_file->basename : NULL);
1946 #ifdef SUPPORT_XATTRS
1947 if (preserve_xattrs)
1948 free_xattr(&real_sx);
1953 #ifdef SUPPORT_HARD_LINKS
1954 if (preserve_hard_links && F_IS_HLINKED(file))
1955 finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1962 if (statret != 0 || whole_file)
1963 write_sum_head(f_out, NULL);
1964 else if (sx.st.st_size <= 0) {
1965 write_sum_head(f_out, NULL);
1968 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1970 "WARNING: file is too large for checksum sending: %s\n",
1972 write_sum_head(f_out, NULL);
1979 int save_preserve_xattrs = preserve_xattrs;
1982 #ifdef SUPPORT_XATTRS
1983 if (preserve_xattrs) {
1984 copy_xattrs(fname, backupptr);
1985 preserve_xattrs = 0;
1988 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1989 preserve_xattrs = save_preserve_xattrs;
1990 if (INFO_GTE(BACKUP, 1)) {
1991 rprintf(FINFO, "backed up %s to %s\n",
1994 unmake_file(back_file);
2001 #ifdef SUPPORT_XATTRS
2002 if (preserve_xattrs)
2008 #ifdef SUPPORT_HARD_LINKS
2009 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2010 enum logcode code, int f_out)
2012 char fbuf[MAXPATHLEN];
2014 struct file_list *save_flist = cur_flist;
2016 /* If we skip the last item in a chain of links and there was a
2017 * prior non-skipped hard-link waiting to finish, finish it now. */
2018 if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2021 file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2022 cur_flist->in_progress--; /* undo prior increment */
2024 recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2026 cur_flist = save_flist;
2030 static void touch_up_dirs(struct file_list *flist, int ndx)
2032 static int counter = 0;
2033 struct file_struct *file;
2039 end = flist->used - 1;
2043 /* Fix any directory permissions that were modified during the
2044 * transfer and/or re-set any tweaked modified-time values. */
2045 for (i = start; i <= end; i++, counter++) {
2046 file = flist->files[i];
2047 if (!S_ISDIR(file->mode)
2048 || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2050 if (DEBUG_GTE(TIME, 2)) {
2051 fname = f_name(file, NULL);
2052 rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2055 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2056 || (!need_retouch_dir_times && file->mode & S_IWUSR))
2058 fname = f_name(file, NULL);
2059 if (!(file->mode & S_IWUSR))
2060 do_chmod(fname, file->mode);
2061 if (need_retouch_dir_times) {
2063 if (link_stat(fname, &st, 0) == 0
2064 && cmp_time(st.st_mtime, file->modtime) != 0)
2065 set_modtime(fname, file->modtime, file->mode);
2067 if (counter >= loopchk_limit) {
2069 maybe_send_keepalive();
2071 maybe_flush_socket(0);
2077 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2079 struct file_struct *file;
2080 struct file_list *flist;
2081 char fbuf[MAXPATHLEN];
2085 #ifdef SUPPORT_HARD_LINKS
2086 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2087 flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2088 file = flist->files[ndx - flist->ndx_start];
2089 assert(file->flags & FLAG_HLINKED);
2090 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2091 flist->in_progress--;
2096 if (check_redo && (ndx = get_redo_num()) != -1) {
2097 csum_length = SUM_LENGTH;
2098 max_size = -max_size;
2099 min_size = -min_size;
2100 ignore_existing = -ignore_existing;
2101 ignore_non_existing = -ignore_non_existing;
2102 update_only = -update_only;
2103 always_checksum = -always_checksum;
2104 size_only = -size_only;
2105 append_mode = -append_mode;
2106 make_backups = -make_backups; /* avoid dup backup w/inplace */
2110 cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2112 file = cur_flist->files[ndx - cur_flist->ndx_start];
2114 strlcpy(fbuf, solo_file, sizeof fbuf);
2117 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2118 cur_flist->to_redo--;
2122 csum_length = SHORT_SUM_LENGTH;
2123 max_size = -max_size;
2124 min_size = -min_size;
2125 ignore_existing = -ignore_existing;
2126 ignore_non_existing = -ignore_non_existing;
2127 update_only = -update_only;
2128 always_checksum = -always_checksum;
2129 size_only = -size_only;
2130 append_mode = -append_mode;
2131 make_backups = -make_backups;
2136 if (cur_flist == first_flist)
2139 /* We only get here if inc_recurse is enabled. */
2140 if (first_flist->in_progress || first_flist->to_redo)
2144 write_ndx(sock_f_out, NDX_DONE);
2145 maybe_flush_socket(1);
2148 if (delete_during == 2 || !dir_tweaking) {
2149 /* Skip directory touch-up. */
2150 } else if (first_flist->parent_ndx >= 0)
2151 touch_up_dirs(dir_flist, first_flist->parent_ndx);
2153 flist_free(first_flist); /* updates first_flist */
2157 void generate_files(int f_out, const char *local_name)
2159 int i, ndx, next_loopchk = 0;
2160 char fbuf[MAXPATHLEN];
2163 int save_info_flist = info_levels[INFO_FLIST];
2164 int save_info_progress = info_levels[INFO_PROGRESS];
2166 if (protocol_version >= 29) {
2168 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2169 code = logfile_format_has_i ? FNONE : FLOG;
2170 } else if (am_daemon) {
2171 itemizing = logfile_format_has_i && do_xfers;
2172 maybe_ATTRS_REPORT = ATTRS_REPORT;
2173 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2174 } else if (!am_server) {
2175 itemizing = stdout_format_has_i;
2176 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2177 code = itemizing ? FNONE : FINFO;
2180 maybe_ATTRS_REPORT = ATTRS_REPORT;
2183 solo_file = local_name;
2184 dir_tweaking = !(list_only || solo_file || dry_run);
2185 need_retouch_dir_times = preserve_times > 1;
2186 loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2187 symlink_timeset_failed_flags = ITEM_REPORT_TIME
2188 | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2189 implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2191 if (DEBUG_GTE(GENR, 1))
2192 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2194 if (delete_before && !solo_file && cur_flist->used > 0)
2196 if (delete_during == 2) {
2197 deldelay_size = BIGPATHBUFLEN * 4;
2198 deldelay_buf = new_array(char, deldelay_size);
2200 out_of_memory("delete-delay");
2202 info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2204 if (append_mode > 0 || whole_file < 0)
2206 if (DEBUG_GTE(FLIST, 1)) {
2207 rprintf(FINFO, "delta-transmission %s\n",
2209 ? "disabled for local transfer or --whole-file"
2213 /* Since we often fill up the outgoing socket and then just sit around
2214 * waiting for the other 2 processes to do their thing, we don't want
2215 * to exit on a timeout. If the data stops flowing, the receiver will
2216 * notice that and let us know via the redo pipe (or its closing). */
2219 dflt_perms = (ACCESSPERMS & ~orig_umask);
2222 #ifdef SUPPORT_HARD_LINKS
2223 if (preserve_hard_links && inc_recurse) {
2224 while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2225 wait_for_receiver();
2229 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2230 struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2232 strlcpy(fbuf, solo_file, sizeof fbuf);
2235 ndx = cur_flist->ndx_start - 1;
2236 recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2237 if (delete_during && dry_run < 2 && !list_only
2238 && !(fp->flags & FLAG_MISSING_DIR)) {
2239 if (fp->flags & FLAG_CONTENT_DIR) {
2241 if (one_file_system) {
2242 uint32 *devp = F_DIR_DEV_P(fp);
2243 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2245 dirdev = MAKEDEV(0, 0);
2246 delete_in_dir(fbuf, fp, &dirdev);
2248 change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2251 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2252 struct file_struct *file = cur_flist->sorted[i];
2254 if (!F_IS_ACTIVE(file))
2260 ndx = i + cur_flist->ndx_start;
2263 strlcpy(fbuf, solo_file, sizeof fbuf);
2266 recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2268 check_for_finished_files(itemizing, code, 0);
2270 if (i + cur_flist->ndx_start >= next_loopchk) {
2272 maybe_send_keepalive();
2274 maybe_flush_socket(0);
2275 next_loopchk += loopchk_limit;
2280 write_ndx(f_out, NDX_DONE);
2285 check_for_finished_files(itemizing, code, 1);
2286 if (cur_flist->next || flist_eof)
2288 wait_for_receiver();
2290 } while ((cur_flist = cur_flist->next) != NULL);
2293 delete_in_dir(NULL, NULL, &dev_zero);
2295 if (DEBUG_GTE(GENR, 1))
2296 rprintf(FINFO, "generate_files phase=%d\n", phase);
2299 check_for_finished_files(itemizing, code, 1);
2302 wait_for_receiver();
2306 if (DEBUG_GTE(GENR, 1))
2307 rprintf(FINFO, "generate_files phase=%d\n", phase);
2309 write_ndx(f_out, NDX_DONE);
2310 /* Reduce round-trip lag-time for a useless delay-updates phase. */
2311 if (protocol_version >= 29 && !delay_updates)
2312 write_ndx(f_out, NDX_DONE);
2314 /* Read MSG_DONE for the redo phase (and any prior messages). */
2316 check_for_finished_files(itemizing, code, 0);
2317 if (msgdone_cnt > 1)
2319 wait_for_receiver();
2322 if (protocol_version >= 29) {
2324 if (DEBUG_GTE(GENR, 1))
2325 rprintf(FINFO, "generate_files phase=%d\n", phase);
2327 write_ndx(f_out, NDX_DONE);
2328 /* Read MSG_DONE for delay-updates phase & prior messages. */
2329 while (msgdone_cnt == 2)
2330 wait_for_receiver();
2333 info_levels[INFO_FLIST] = save_info_flist;
2334 info_levels[INFO_PROGRESS] = save_info_progress;
2336 if (delete_during == 2)
2337 do_delayed_deletions(fbuf);
2338 if (delete_after && !solo_file && file_total > 0)
2341 if ((need_retouch_dir_perms || need_retouch_dir_times)
2342 && dir_tweaking && (!inc_recurse || delete_during == 2))
2343 touch_up_dirs(dir_flist, -1);
2345 if (max_delete >= 0 && deletion_count > max_delete) {
2347 "Deletions stopped due to --max-delete limit (%d skipped)\n",
2348 deletion_count - max_delete);
2349 io_error |= IOERR_DEL_LIMIT;
2352 if (DEBUG_GTE(GENR, 1))
2353 rprintf(FINFO, "generate_files finished\n");