2 * Generate and receive file lists.
4 * Copyright (C) 1996 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2002-2007 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 version 2 as
11 * published by the Free Software Foundation.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
33 extern int am_generator;
34 extern int inc_recurse;
35 extern int do_progress;
36 extern int always_checksum;
38 extern int ignore_errors;
39 extern int numeric_ids;
42 extern int filesfrom_fd;
43 extern int one_file_system;
44 extern int copy_dirlinks;
45 extern int keep_dirlinks;
46 extern int preserve_acls;
47 extern int preserve_xattrs;
48 extern int preserve_links;
49 extern int preserve_hard_links;
50 extern int preserve_devices;
51 extern int preserve_specials;
52 extern int preserve_uid;
53 extern int preserve_gid;
54 extern int relative_paths;
55 extern int implied_dirs;
56 extern int file_extra_cnt;
57 extern int ignore_perishable;
58 extern int non_perishable_cnt;
59 extern int prune_empty_dirs;
60 extern int copy_links;
61 extern int copy_unsafe_links;
62 extern int protocol_version;
63 extern int sanitize_paths;
64 extern struct stats stats;
66 extern char curr_dir[MAXPATHLEN];
68 extern struct chmod_mode_struct *chmod_modes;
70 extern struct filter_list_struct filter_list;
71 extern struct filter_list_struct server_filter_list;
75 dev_t filesystem_dev; /* used to implement -x */
77 struct file_list *cur_flist, *first_flist, *dir_flist;
78 int send_dir_ndx = -1, send_dir_depth = 0;
79 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
80 int file_total = 0; /* total of all active items over all file-lists */
81 int flist_eof = 0; /* all the file-lists are now known */
83 /* The tmp_* vars are used as a cache area by make_file() to store data
84 * that the sender doesn't need to remember in its file list. The data
85 * will survive just long enough to be used by send_file_entry(). */
86 static dev_t tmp_rdev;
87 #ifdef SUPPORT_HARD_LINKS
88 static int64 tmp_dev, tmp_ino;
90 static char tmp_sum[MAX_DIGEST_LEN];
92 static char empty_sum[MAX_DIGEST_LEN];
93 static int flist_count_offset; /* for --delete --progress */
95 static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
96 static void output_flist(struct file_list *flist);
101 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
102 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
104 checksum_len = protocol_version < 21 ? 2
105 : protocol_version < 30 ? MD4_DIGEST_LEN
109 static int show_filelist_p(void)
111 return verbose && xfer_dirs && !am_server && !inc_recurse;
114 static void start_filelist_progress(char *kind)
116 rprintf(FCLIENT, "%s ... ", kind);
117 if (verbose > 1 || do_progress)
118 rprintf(FCLIENT, "\n");
122 static void emit_filelist_progress(int count)
124 rprintf(FCLIENT, " %d files...\r", count);
127 static void maybe_emit_filelist_progress(int count)
129 if (do_progress && show_filelist_p() && (count % 100) == 0)
130 emit_filelist_progress(count);
133 static void finish_filelist_progress(const struct file_list *flist)
136 /* This overwrites the progress line */
137 rprintf(FINFO, "%d file%sto consider\n",
138 flist->count, flist->count == 1 ? " " : "s ");
140 rprintf(FINFO, "done\n");
143 void show_flist_stats(void)
148 static void list_file_entry(struct file_struct *f)
150 char permbuf[PERMSTRING_SIZE];
153 if (!F_IS_ACTIVE(f)) {
154 /* this can happen if duplicate names were removed */
158 permstring(permbuf, f->mode);
161 /* TODO: indicate '+' if the entry has an ACL. */
164 if (preserve_links && S_ISLNK(f->mode)) {
165 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
166 permbuf, len, timestring(f->modtime),
167 f_name(f, NULL), F_SYMLINK(f));
171 rprintf(FINFO, "%s %11.0f %s %s\n",
172 permbuf, len, timestring(f->modtime),
177 /* Stat either a symlink or its referent, depending on the settings of
178 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
180 * If path is the name of a symlink, then the linkbuf buffer (which must hold
181 * MAXPATHLEN chars) will be set to the symlink's target string.
183 * The stat structure pointed to by stp will contain information about the
184 * link or the referent as appropriate, if they exist. */
185 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
188 if (link_stat(path, stp, copy_dirlinks) < 0)
190 if (S_ISLNK(stp->st_mode)) {
191 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
194 linkbuf[llen] = '\0';
195 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
197 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
200 return x_stat(path, stp, NULL);
205 return x_stat(path, stp, NULL);
209 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
213 return x_stat(path, stp, NULL);
214 if (x_lstat(path, stp, NULL) < 0)
216 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
218 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
223 return x_stat(path, stp, NULL);
227 /* This function is used to check if a file should be included/excluded
228 * from the list of files based on its name and type etc. The value of
229 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
230 static int is_excluded(char *fname, int is_dir, int filter_level)
232 #if 0 /* This currently never happens, so avoid a useless compare. */
233 if (filter_level == NO_FILTERS)
237 /* never exclude '.', even if somebody does --exclude '*' */
238 if (fname[0] == '.' && !fname[1])
240 /* Handle the -R version of the '.' dir. */
241 if (fname[0] == '/') {
242 int len = strlen(fname);
243 if (fname[len-1] == '.' && fname[len-2] == '/')
247 if (server_filter_list.head
248 && check_filter(&server_filter_list, fname, is_dir) < 0)
250 if (filter_level != ALL_FILTERS)
253 && check_filter(&filter_list, fname, is_dir) < 0)
258 static void send_directory(int f, struct file_list *flist, int ndx,
259 char *fbuf, int len, int flags);
261 static const char *flist_dir, *orig_dir;
262 static int flist_dir_len;
266 * Make sure @p flist is big enough to hold at least @p flist->count
269 void flist_expand(struct file_list *flist)
271 struct file_struct **new_ptr;
273 if (flist->count < flist->malloced)
276 if (flist->malloced < FLIST_START)
277 flist->malloced = FLIST_START;
278 else if (flist->malloced >= FLIST_LINEAR)
279 flist->malloced += FLIST_LINEAR;
281 flist->malloced *= 2;
284 * In case count jumped or we are starting the list
285 * with a known size just set it.
287 if (flist->malloced < flist->count)
288 flist->malloced = flist->count;
290 new_ptr = realloc_array(flist->files, struct file_struct *,
293 if (verbose >= 2 && flist->malloced != FLIST_START) {
294 rprintf(FCLIENT, "[%s] expand file_list to %.0f bytes, did%s move\n",
296 (double)sizeof flist->files[0] * flist->malloced,
297 (new_ptr == flist->files) ? " not" : "");
300 flist->files = new_ptr;
303 out_of_memory("flist_expand");
306 int push_flist_dir(const char *dir, int len)
308 if (dir == flist_dir)
312 orig_dir = strdup(curr_dir);
314 if (flist_dir && !pop_dir(orig_dir)) {
315 rsyserr(FERROR, errno, "pop_dir %s failed",
316 full_fname(orig_dir));
317 exit_cleanup(RERR_FILESELECT);
320 if (dir && !push_dir(dir, 0)) {
321 io_error |= IOERR_GENERAL;
322 rsyserr(FERROR, errno, "push_dir %s failed in %s",
323 full_fname(dir), curr_dir);
328 flist_dir_len = len >= 0 ? len : dir ? (int)strlen(dir) : 0;
333 static void send_file_entry(int f, struct file_struct *file, int ndx)
335 static time_t modtime;
339 static uint32 rdev_major;
342 static char *user_name, *group_name;
343 static char lastname[MAXPATHLEN];
344 char fname[MAXPATHLEN];
345 int first_hlink_ndx = -1;
351 flags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
353 if (file->mode == mode)
354 flags |= XMIT_SAME_MODE;
357 if ((preserve_devices && IS_DEVICE(mode))
358 || (preserve_specials && IS_SPECIAL(mode))) {
359 if (protocol_version < 28) {
360 if (tmp_rdev == rdev)
361 flags |= XMIT_SAME_RDEV_pre28;
366 if ((uint32)major(rdev) == rdev_major)
367 flags |= XMIT_SAME_RDEV_MAJOR;
369 rdev_major = major(rdev);
370 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
371 flags |= XMIT_RDEV_MINOR_8_pre30;
373 } else if (protocol_version < 28)
374 rdev = MAKEDEV(0, 0);
376 if (F_UID(file) == uid && *lastname)
377 flags |= XMIT_SAME_UID;
380 if (preserve_uid && !numeric_ids) {
381 user_name = add_uid(uid);
382 if (inc_recurse && user_name)
383 flags |= XMIT_USER_NAME_FOLLOWS;
388 if (F_GID(file) == gid && *lastname)
389 flags |= XMIT_SAME_GID;
392 if (preserve_gid && !numeric_ids) {
393 group_name = add_gid(gid);
394 if (inc_recurse && group_name)
395 flags |= XMIT_GROUP_NAME_FOLLOWS;
399 if (file->modtime == modtime)
400 flags |= XMIT_SAME_TIME;
402 modtime = file->modtime;
404 #ifdef SUPPORT_HARD_LINKS
406 if (protocol_version >= 30) {
407 struct idev_node *np = idev_node(tmp_dev, tmp_ino);
408 first_hlink_ndx = (int32)(long)np->data - 1;
409 if (first_hlink_ndx < 0) {
410 np->data = (void*)(long)(ndx + 1);
411 flags |= XMIT_HLINK_FIRST;
413 flags |= XMIT_HLINKED;
415 if (tmp_dev == dev) {
416 if (protocol_version >= 28)
417 flags |= XMIT_SAME_DEV_pre30;
420 flags |= XMIT_HLINKED;
426 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
428 l2 = strlen(fname+l1);
431 flags |= XMIT_SAME_NAME;
433 flags |= XMIT_LONG_NAME;
435 /* We must make sure we don't send a zero flag byte or the
436 * other end will terminate the flist transfer. Note that
437 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
438 * it's harmless way to add a bit to the first flag byte. */
439 if (protocol_version >= 28) {
440 if (!flags && !S_ISDIR(mode))
441 flags |= XMIT_TOP_DIR;
442 if ((flags & 0xFF00) || !flags) {
443 flags |= XMIT_EXTENDED_FLAGS;
444 write_shortint(f, flags);
446 write_byte(f, flags);
449 flags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
450 write_byte(f, flags);
452 if (flags & XMIT_SAME_NAME)
454 if (flags & XMIT_LONG_NAME)
455 write_varint30(f, l2);
458 write_buf(f, fname + l1, l2);
460 if (first_hlink_ndx >= 0) {
461 write_varint30(f, first_hlink_ndx);
465 write_varlong30(f, F_LENGTH(file), 3);
466 if (!(flags & XMIT_SAME_TIME)) {
467 if (protocol_version >= 30)
468 write_varlong(f, modtime, 4);
470 write_int(f, modtime);
472 if (!(flags & XMIT_SAME_MODE))
473 write_int(f, to_wire_mode(mode));
474 if (preserve_uid && !(flags & XMIT_SAME_UID)) {
475 if (protocol_version < 30)
478 write_varint(f, uid);
479 if (flags & XMIT_USER_NAME_FOLLOWS) {
480 int len = strlen(user_name);
482 write_buf(f, user_name, len);
486 if (preserve_gid && !(flags & XMIT_SAME_GID)) {
487 if (protocol_version < 30)
490 write_varint(f, gid);
491 if (flags & XMIT_GROUP_NAME_FOLLOWS) {
492 int len = strlen(group_name);
494 write_buf(f, group_name, len);
498 if ((preserve_devices && IS_DEVICE(mode))
499 || (preserve_specials && IS_SPECIAL(mode))) {
500 if (protocol_version < 28) {
501 if (!(flags & XMIT_SAME_RDEV_pre28))
502 write_int(f, (int)rdev);
504 if (!(flags & XMIT_SAME_RDEV_MAJOR))
505 write_varint30(f, major(rdev));
506 if (protocol_version >= 30)
507 write_varint(f, minor(rdev));
508 else if (flags & XMIT_RDEV_MINOR_8_pre30)
509 write_byte(f, minor(rdev));
511 write_int(f, minor(rdev));
516 if (preserve_links && S_ISLNK(mode)) {
517 const char *sl = F_SYMLINK(file);
518 int len = strlen(sl);
519 write_varint30(f, len);
520 write_buf(f, sl, len);
524 #ifdef SUPPORT_HARD_LINKS
525 if (tmp_dev != 0 && protocol_version < 30) {
526 if (protocol_version < 26) {
527 /* 32-bit dev_t and ino_t */
528 write_int(f, (int32)dev);
529 write_int(f, (int32)tmp_ino);
531 /* 64-bit dev_t and ino_t */
532 if (!(flags & XMIT_SAME_DEV_pre30))
533 write_longint(f, dev);
534 write_longint(f, tmp_ino);
539 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
544 /* Prior to 28, we sent a useless set of nulls. */
547 write_buf(f, sum, checksum_len);
551 strlcpy(lastname, fname, MAXPATHLEN);
553 if (S_ISREG(mode) || S_ISLNK(mode))
554 stats.total_size += F_LENGTH(file);
557 static struct file_struct *recv_file_entry(struct file_list *flist,
560 static int64 modtime;
564 static uint32 rdev_major;
567 static char lastname[MAXPATHLEN], *lastdir;
568 static int lastdir_depth, lastdir_len = -1;
569 static unsigned int del_hier_name_len = 0;
570 static int in_del_hier = 0;
571 char thisname[MAXPATHLEN];
572 unsigned int l1 = 0, l2 = 0;
573 int alloc_len, basename_len, linkname_len;
574 int extra_len = file_extra_cnt * EXTRA_LEN;
575 int first_hlink_ndx = -1;
577 const char *basename;
579 struct file_struct *file;
581 if (flags & XMIT_SAME_NAME)
584 if (flags & XMIT_LONG_NAME)
585 l2 = read_varint30(f);
589 if (l2 >= MAXPATHLEN - l1) {
591 "overflow: flags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
592 flags, l1, l2, lastname, who_am_i());
593 overflow_exit("recv_file_entry");
596 strlcpy(thisname, lastname, l1 + 1);
597 read_sbuf(f, &thisname[l1], l2);
598 thisname[l1 + l2] = 0;
600 strlcpy(lastname, thisname, MAXPATHLEN);
602 clean_fname(thisname, 0);
605 sanitize_path(thisname, thisname, "", 0, NULL);
607 if ((basename = strrchr(thisname, '/')) != NULL) {
608 int len = basename++ - thisname;
609 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
610 lastdir = new_array(char, len + 1);
611 memcpy(lastdir, thisname, len);
614 lastdir_depth = count_dir_elements(lastdir);
618 basename_len = strlen(basename) + 1; /* count the '\0' */
620 #ifdef SUPPORT_HARD_LINKS
621 if (protocol_version >= 30
622 && BITS_SETnUNSET(flags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
623 struct file_struct *first;
624 first_hlink_ndx = read_varint30(f);
625 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->count) {
627 "hard-link reference out of range: %d (%d)\n",
628 first_hlink_ndx, flist->count);
629 exit_cleanup(RERR_PROTOCOL);
631 first = flist->files[first_hlink_ndx];
632 file_length = F_LENGTH(first);
633 modtime = first->modtime;
639 if ((preserve_devices && IS_DEVICE(mode))
640 || (preserve_specials && IS_SPECIAL(mode))) {
641 uint32 *devp = F_RDEV_P(first);
642 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
643 extra_len += 2 * EXTRA_LEN;
645 if (preserve_links && S_ISLNK(mode))
646 linkname_len = strlen(F_SYMLINK(first)) + 1;
653 file_length = read_varlong30(f, 3);
654 if (!(flags & XMIT_SAME_TIME)) {
655 if (protocol_version >= 30) {
656 modtime = read_varlong(f, 4);
657 #if SIZEOF_TIME_T < SIZEOF_INT64
658 if ((modtime > INT_MAX || modtime < INT_MIN) && !am_generator) {
660 "Time value of %s truncated on receiver.\n",
665 modtime = read_int(f);
667 if (!(flags & XMIT_SAME_MODE))
668 mode = from_wire_mode(read_int(f));
670 if (chmod_modes && !S_ISLNK(mode))
671 mode = tweak_mode(mode, chmod_modes);
673 if (preserve_uid && !(flags & XMIT_SAME_UID)) {
674 if (protocol_version < 30)
675 uid = (uid_t)read_int(f);
677 uid = (uid_t)read_varint(f);
678 if (flags & XMIT_USER_NAME_FOLLOWS)
679 uid = recv_user_name(f, uid);
680 else if (inc_recurse && am_root && !numeric_ids)
681 uid = match_uid(uid);
684 if (preserve_gid && !(flags & XMIT_SAME_GID)) {
685 if (protocol_version < 30)
686 gid = (gid_t)read_int(f);
688 gid = (gid_t)read_varint(f);
689 if (flags & XMIT_GROUP_NAME_FOLLOWS)
690 gid = recv_group_name(f, gid);
691 else if (inc_recurse && (!am_root || !numeric_ids))
692 gid = match_gid(gid);
696 if ((preserve_devices && IS_DEVICE(mode))
697 || (preserve_specials && IS_SPECIAL(mode))) {
698 if (protocol_version < 28) {
699 if (!(flags & XMIT_SAME_RDEV_pre28))
700 rdev = (dev_t)read_int(f);
703 if (!(flags & XMIT_SAME_RDEV_MAJOR))
704 rdev_major = read_varint30(f);
705 if (protocol_version >= 30)
706 rdev_minor = read_varint(f);
707 else if (flags & XMIT_RDEV_MINOR_8_pre30)
708 rdev_minor = read_byte(f);
710 rdev_minor = read_int(f);
711 rdev = MAKEDEV(rdev_major, rdev_minor);
713 extra_len += 2 * EXTRA_LEN;
715 } else if (protocol_version < 28)
716 rdev = MAKEDEV(0, 0);
719 if (preserve_links && S_ISLNK(mode)) {
720 linkname_len = read_varint30(f) + 1; /* count the '\0' */
721 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
722 rprintf(FERROR, "overflow: linkname_len=%d\n",
724 overflow_exit("recv_file_entry");
731 #ifdef SUPPORT_HARD_LINKS
733 if (preserve_hard_links) {
734 if (protocol_version < 28 && S_ISREG(mode))
735 flags |= XMIT_HLINKED;
736 if (flags & XMIT_HLINKED)
737 extra_len += EXTRA_LEN;
742 /* We need one or two index int32s when we're preserving ACLs. */
744 extra_len += (S_ISDIR(mode) ? 2 : 1) * EXTRA_LEN;
747 if (always_checksum && S_ISREG(mode))
748 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
750 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
751 extra_len += EXTRA_LEN;
753 #if EXTRA_ROUNDING > 0
754 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
755 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
758 if (inc_recurse && S_ISDIR(mode)) {
759 if (one_file_system) {
760 /* Room to save the dir's device for -x */
761 extra_len += 2 * EXTRA_LEN;
766 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
768 bp = pool_alloc(flist->file_pool, alloc_len, "recv_file_entry");
770 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
772 file = (struct file_struct *)bp;
773 bp += FILE_STRUCT_LEN;
775 memcpy(bp, basename, basename_len);
776 bp += basename_len + linkname_len; /* skip space for symlink too */
778 #ifdef SUPPORT_HARD_LINKS
779 if (flags & XMIT_HLINKED)
780 file->flags |= FLAG_HLINKED;
782 file->modtime = (time_t)modtime;
783 file->len32 = (uint32)file_length;
784 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
785 file->flags |= FLAG_LENGTH64;
786 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
794 if (basename != thisname) {
795 file->dirname = lastdir;
796 F_DEPTH(file) = lastdir_depth + 1;
801 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
803 if (flags & XMIT_TOP_DIR) {
804 in_del_hier = recurse;
805 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
806 if (relative_paths && del_hier_name_len > 2
807 && lastname[del_hier_name_len-1] == '.'
808 && lastname[del_hier_name_len-2] == '/')
809 del_hier_name_len -= 2;
810 file->flags |= FLAG_TOP_DIR | FLAG_XFER_DIR;
811 } else if (in_del_hier) {
812 if (!relative_paths || !del_hier_name_len
813 || (l1 >= del_hier_name_len
814 && lastname[del_hier_name_len] == '/'))
815 file->flags |= FLAG_XFER_DIR;
821 if ((preserve_devices && IS_DEVICE(mode))
822 || (preserve_specials && IS_SPECIAL(mode))) {
823 uint32 *devp = F_RDEV_P(file);
824 DEV_MAJOR(devp) = major(rdev);
825 DEV_MINOR(devp) = minor(rdev);
830 bp = (char*)file->basename + basename_len;
831 if (first_hlink_ndx >= 0) {
832 struct file_struct *first = flist->files[first_hlink_ndx];
833 memcpy(bp, F_SYMLINK(first), linkname_len);
835 read_sbuf(f, bp, linkname_len - 1);
837 sanitize_path(bp, bp, "", lastdir_depth, NULL);
841 #ifdef SUPPORT_HARD_LINKS
842 if (preserve_hard_links && flags & XMIT_HLINKED) {
843 if (protocol_version >= 30) {
844 F_HL_GNUM(file) = flags & XMIT_HLINK_FIRST
845 ? flist->count : first_hlink_ndx;
847 static int32 cnt = 0;
848 struct idev_node *np;
851 if (protocol_version < 26) {
855 if (!(flags & XMIT_SAME_DEV_pre30))
856 dev = read_longint(f);
857 ino = read_longint(f);
859 np = idev_node(dev, ino);
860 ndx = (int32)(long)np->data - 1;
863 np->data = (void*)(long)cnt;
865 F_HL_GNUM(file) = ndx;
870 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
872 bp = (char*)F_SUM(file);
874 /* Prior to 28, we get a useless set of nulls. */
877 if (first_hlink_ndx >= 0) {
878 struct file_struct *first = flist->files[first_hlink_ndx];
879 memcpy(bp, F_SUM(first), checksum_len);
881 read_buf(f, bp, checksum_len);
885 if (preserve_acls && !S_ISLNK(mode))
886 receive_acl(file, f);
888 #ifdef SUPPORT_XATTRS
890 receive_xattr(file, f );
893 if (S_ISREG(mode) || S_ISLNK(mode))
894 stats.total_size += file_length;
900 * Create a file_struct for a named file by reading its stat()
901 * information and performing extensive checks against global
904 * @return the new file, or NULL if there was an error or this file
905 * should be excluded.
907 * @todo There is a small optimization opportunity here to avoid
908 * stat()ing the file in some circumstances, which has a certain cost.
909 * We are called immediately after doing readdir(), and so we may
910 * already know the d_type of the file. We could for example avoid
911 * statting directories if we're not recursing, but this is not a very
912 * important case. Some systems may not have d_type.
914 struct file_struct *make_file(const char *fname, struct file_list *flist,
915 STRUCT_STAT *stp, int flags, int filter_level)
917 static char *lastdir;
918 static int lastdir_len = -1;
919 struct file_struct *file;
921 char thisname[MAXPATHLEN];
922 char linkname[MAXPATHLEN];
923 int alloc_len, basename_len, linkname_len;
924 int extra_len = file_extra_cnt * EXTRA_LEN;
925 const char *basename;
928 if (strlcpy(thisname, fname, sizeof thisname)
929 >= sizeof thisname - flist_dir_len) {
930 rprintf(FINFO, "skipping overly long name: %s\n", fname);
933 clean_fname(thisname, 0);
935 sanitize_path(thisname, thisname, "", 0, NULL);
937 if (stp && S_ISDIR(stp->st_mode)) {
938 st = *stp; /* Needed for "symlink/." with --relative. */
939 *linkname = '\0'; /* make IBM code checker happy */
940 } else if (readlink_stat(thisname, &st, linkname) != 0) {
941 int save_errno = errno;
942 /* See if file is excluded before reporting an error. */
943 if (filter_level != NO_FILTERS
944 && (is_excluded(thisname, 0, filter_level)
945 || is_excluded(thisname, 1, filter_level))) {
946 if (ignore_perishable && save_errno != ENOENT)
947 non_perishable_cnt++;
950 if (save_errno == ENOENT) {
952 /* Avoid "vanished" error if symlink points nowhere. */
953 if (copy_links && x_lstat(thisname, &st, NULL) == 0
954 && S_ISLNK(st.st_mode)) {
955 io_error |= IOERR_GENERAL;
956 rprintf(FERROR, "symlink has no referent: %s\n",
957 full_fname(thisname));
961 enum logcode c = am_daemon && protocol_version < 28
963 io_error |= IOERR_VANISHED;
964 rprintf(c, "file has vanished: %s\n",
965 full_fname(thisname));
968 io_error |= IOERR_GENERAL;
969 rsyserr(FERROR, save_errno, "readlink %s failed",
970 full_fname(thisname));
975 /* backup.c calls us with filter_level set to NO_FILTERS. */
976 if (filter_level == NO_FILTERS)
979 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
980 rprintf(FINFO, "skipping directory %s\n", thisname);
984 /* -x only affects directories because we need to avoid recursing
985 * into a mount-point directory, not to avoid copying a symlinked
986 * file if -L (or similar) was specified. */
987 if (one_file_system && st.st_dev != filesystem_dev
988 && S_ISDIR(st.st_mode)) {
989 if (one_file_system > 1) {
991 rprintf(FINFO, "skipping mount-point dir %s\n",
996 flags |= FLAG_MOUNT_DIR;
999 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1000 if (ignore_perishable)
1001 non_perishable_cnt++;
1005 if (lp_ignore_nonreadable(module_id)) {
1006 #ifdef SUPPORT_LINKS
1007 if (!S_ISLNK(st.st_mode))
1009 if (access(thisname, R_OK) != 0)
1015 /* Only divert a directory in the main transfer. */
1016 if (flist && flist->prev && S_ISDIR(st.st_mode)
1017 && flags & FLAG_DIVERT_DIRS) {
1019 /* Room for parent/sibling/next-child info. */
1020 extra_len += 3 * EXTRA_LEN;
1024 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1025 who_am_i(), thisname, filter_level);
1028 if ((basename = strrchr(thisname, '/')) != NULL) {
1029 int len = basename++ - thisname;
1030 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1031 lastdir = new_array(char, len + 1);
1032 memcpy(lastdir, thisname, len);
1033 lastdir[len] = '\0';
1037 basename = thisname;
1038 basename_len = strlen(basename) + 1; /* count the '\0' */
1040 #ifdef SUPPORT_LINKS
1041 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1046 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1047 extra_len += EXTRA_LEN;
1049 #if EXTRA_ROUNDING > 0
1050 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1051 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1054 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1057 bp = pool_alloc(flist->file_pool, alloc_len, "make_file");
1059 if (!(bp = new_array(char, alloc_len)))
1060 out_of_memory("make_file");
1063 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1065 file = (struct file_struct *)bp;
1066 bp += FILE_STRUCT_LEN;
1068 memcpy(bp, basename, basename_len);
1069 bp += basename_len + linkname_len; /* skip space for symlink too */
1071 #ifdef SUPPORT_HARD_LINKS
1072 if (preserve_hard_links && flist && flist->prev) {
1073 if (protocol_version >= 28
1074 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1075 : S_ISREG(st.st_mode)) {
1076 tmp_dev = st.st_dev;
1077 tmp_ino = st.st_ino;
1083 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1084 if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1085 tmp_rdev = st.st_rdev;
1090 file->flags = flags;
1091 file->modtime = st.st_mtime;
1092 file->len32 = (uint32)st.st_size;
1093 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1094 file->flags |= FLAG_LENGTH64;
1095 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1097 file->mode = st.st_mode;
1099 F_OWNER(file) = st.st_uid;
1101 F_GROUP(file) = st.st_gid;
1103 if (basename != thisname)
1104 file->dirname = lastdir;
1106 #ifdef SUPPORT_LINKS
1108 bp = (char*)file->basename + basename_len;
1109 memcpy(bp, linkname, linkname_len);
1113 if (always_checksum && am_sender && S_ISREG(st.st_mode))
1114 file_checksum(thisname, tmp_sum, st.st_size);
1116 F_ROOTDIR(file) = flist_dir;
1118 /* This code is only used by the receiver when it is building
1119 * a list of files for a delete pass. */
1120 if (keep_dirlinks && linkname_len && flist) {
1122 int save_mode = file->mode;
1123 file->mode = S_IFDIR; /* Find a directory with our name. */
1124 if (flist_find(dir_flist, file) >= 0
1125 && x_stat(thisname, &st2, NULL) == 0 && S_ISDIR(st2.st_mode)) {
1126 file->modtime = st2.st_mtime;
1128 file->mode = st2.st_mode;
1130 F_OWNER(file) = st2.st_uid;
1132 F_GROUP(file) = st2.st_gid;
1134 file->mode = save_mode;
1137 if (basename_len == 0+1)
1140 if (inc_recurse && flist == dir_flist) {
1141 flist_expand(flist);
1142 flist->files[flist->count++] = file;
1148 /* Only called for temporary file_struct entries created by make_file(). */
1149 void unmake_file(struct file_struct *file)
1151 int extra_cnt = file_extra_cnt + LEN64_BUMP(file);
1152 #if EXTRA_ROUNDING > 0
1153 if (extra_cnt & EXTRA_ROUNDING)
1154 extra_cnt = (extra_cnt | EXTRA_ROUNDING) + 1;
1156 free(REQ_EXTRA(file, extra_cnt));
1159 static struct file_struct *send_file_name(int f, struct file_list *flist,
1160 char *fname, STRUCT_STAT *stp,
1161 int flags, int filter_flags)
1163 struct file_struct *file;
1164 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1168 file = make_file(fname, flist, stp, flags, filter_flags);
1172 if (chmod_modes && !S_ISLNK(file->mode))
1173 file->mode = tweak_mode(file->mode, chmod_modes);
1176 if (preserve_acls && !S_ISLNK(file->mode) && f >= 0) {
1177 sx.st.st_mode = file->mode;
1178 sx.acc_acl = sx.def_acl = NULL;
1179 if (get_acl(fname, &sx) < 0)
1183 #ifdef SUPPORT_XATTRS
1184 if (preserve_xattrs && f >= 0) {
1186 if (get_xattr(fname, &sx) < 0)
1191 maybe_emit_filelist_progress(flist->count + flist_count_offset);
1193 flist_expand(flist);
1194 flist->files[flist->count++] = file;
1196 send_file_entry(f, file, flist->count - 1);
1198 if (preserve_acls && !S_ISLNK(file->mode)) {
1203 #ifdef SUPPORT_XATTRS
1204 if (preserve_xattrs) {
1205 F_XATTR(file) = send_xattr(&sx, f);
1213 static void send_if_directory(int f, struct file_list *flist,
1214 struct file_struct *file,
1215 char *fbuf, unsigned int ol,
1218 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1220 if (S_ISDIR(file->mode)
1221 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1223 unsigned int len = strlen(fbuf);
1224 if (len > 1 && fbuf[len-1] == '/')
1226 if (len >= MAXPATHLEN - 1) {
1227 io_error |= IOERR_GENERAL;
1228 rprintf(FERROR, "skipping long-named directory: %s\n",
1232 save_filters = push_local_filters(fbuf, len);
1233 send_directory(f, flist, -1, fbuf, len, flags);
1234 pop_local_filters(save_filters);
1241 static int file_compare(struct file_struct **file1, struct file_struct **file2)
1243 return f_name_cmp(*file1, *file2);
1246 /* We take an entire set of sibling dirs from dir_flist (start <= ndx <= end),
1247 * sort them by name, and link them into the tree, setting the appropriate
1248 * parent/child/sibling pointers. */
1249 static void add_dirs_to_tree(int parent_ndx, int start, int end)
1253 int32 *parent_dp = parent_ndx < 0 ? NULL
1254 : F_DIRNODE_P(dir_flist->files[parent_ndx]);
1256 qsort(dir_flist->files + start, end - start + 1,
1257 sizeof dir_flist->files[0], (int (*)())file_compare);
1259 for (i = start; i <= end; i++) {
1260 struct file_struct *file = dir_flist->files[i];
1261 if (!(file->flags & FLAG_XFER_DIR)
1262 || file->flags & FLAG_MOUNT_DIR)
1265 DIR_NEXT_SIBLING(dp) = i;
1267 DIR_FIRST_CHILD(parent_dp) = i;
1270 dp = F_DIRNODE_P(file);
1271 DIR_PARENT(dp) = parent_ndx;
1272 DIR_FIRST_CHILD(dp) = -1;
1275 DIR_NEXT_SIBLING(dp) = -1;
1278 /* This function is normally called by the sender, but the receiving side also
1279 * calls it from get_dirlist() with f set to -1 so that we just construct the
1280 * file list in memory without sending it over the wire. Also, get_dirlist()
1281 * might call this with f set to -2, which also indicates that local filter
1282 * rules should be ignored. */
1283 static void send_directory(int f, struct file_list *flist, int parent_ndx,
1284 char *fbuf, int len, int flags)
1290 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1291 int start = divert_dirs ? dir_flist->count : flist->count;
1292 int filter_flags = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1294 assert(flist != NULL);
1296 if (!(d = opendir(fbuf))) {
1297 io_error |= IOERR_GENERAL;
1298 rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
1303 if (len != 1 || *fbuf != '/')
1306 remainder = MAXPATHLEN - (p - fbuf);
1308 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1309 char *dname = d_name(di);
1310 if (dname[0] == '.' && (dname[1] == '\0'
1311 || (dname[1] == '.' && dname[2] == '\0')))
1313 if (strlcpy(p, dname, remainder) >= remainder) {
1314 io_error |= IOERR_GENERAL;
1316 "cannot send long-named file %s\n",
1321 send_file_name(f, flist, fbuf, NULL, flags, filter_flags);
1327 io_error |= IOERR_GENERAL;
1328 rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
1337 add_dirs_to_tree(parent_ndx, start, dir_flist->count - 1);
1339 int i, end = flist->count - 1;
1340 /* send_if_directory() bumps flist->count, so use "end". */
1341 for (i = start; i <= end; i++)
1342 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1346 void send_extra_file_list(int f, int at_least)
1348 char fbuf[MAXPATHLEN];
1349 struct file_list *flist;
1351 int future_cnt, save_io_error = io_error;
1356 /* Keep sending data until we have the requested number of
1357 * files in the upcoming file-lists. */
1358 if (cur_flist->next) {
1359 flist = first_flist->prev; /* the newest flist */
1360 future_cnt = flist->count
1361 + flist->ndx_start - cur_flist->next->ndx_start;
1364 while (future_cnt < at_least) {
1365 struct file_struct *file = dir_flist->files[send_dir_ndx];
1370 dlen = strlen(fbuf);
1372 if (F_ROOTDIR(file) != flist_dir) {
1373 if (!push_flist_dir(F_ROOTDIR(file), -1))
1374 exit_cleanup(RERR_FILESELECT);
1377 flist = flist_new(0, "send_extra_file_list");
1378 start_write = stats.total_written;
1380 write_ndx(f, NDX_FLIST_OFFSET - send_dir_ndx);
1381 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1382 send_directory(f, flist, send_dir_ndx, fbuf, dlen, FLAG_DIVERT_DIRS | FLAG_XFER_DIR);
1385 clean_flist(flist, 0, 0);
1386 file_total += flist->count;
1387 future_cnt += flist->count;
1388 stats.flist_size += stats.total_written - start_write;
1389 stats.num_files += flist->count;
1391 output_flist(flist);
1393 dp = F_DIRNODE_P(file);
1394 if (DIR_FIRST_CHILD(dp) >= 0) {
1395 send_dir_ndx = DIR_FIRST_CHILD(dp);
1398 while (DIR_NEXT_SIBLING(dp) < 0) {
1399 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1400 write_ndx(f, NDX_FLIST_EOF);
1402 change_local_filter_dir(NULL, 0, 0);
1406 file = dir_flist->files[send_dir_ndx];
1407 dp = F_DIRNODE_P(file);
1409 send_dir_ndx = DIR_NEXT_SIBLING(dp);
1414 if (io_error != save_io_error && !ignore_errors)
1415 send_msg_int(MSG_IO_ERROR, io_error);
1418 struct file_list *send_file_list(int f, int argc, char *argv[])
1420 static const char *lastdir;
1421 static int lastdir_len = -1;
1425 char lastpath[MAXPATHLEN] = "";
1426 struct file_list *flist;
1427 struct timeval start_tv, end_tv;
1430 int flags, disable_buffering;
1432 rprintf(FLOG, "building file list\n");
1433 if (show_filelist_p())
1434 start_filelist_progress("building file list");
1435 else if (inc_recurse && verbose && !am_server)
1436 rprintf(FCLIENT, "sending incremental file list\n");
1438 start_write = stats.total_written;
1439 gettimeofday(&start_tv, NULL);
1441 #ifdef SUPPORT_HARD_LINKS
1442 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
1446 flist = cur_flist = flist_new(0, "send_file_list");
1448 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
1449 flags = FLAG_DIVERT_DIRS;
1451 dir_flist = cur_flist;
1455 disable_buffering = io_start_buffering_out(f);
1456 if (filesfrom_fd >= 0) {
1457 if (argv[0] && !push_dir(argv[0], 0)) {
1458 rsyserr(FERROR, errno, "push_dir %s failed in %s",
1459 full_fname(argv[0]), curr_dir);
1460 exit_cleanup(RERR_FILESELECT);
1466 char fbuf[MAXPATHLEN];
1471 if (read_filesfrom_line(filesfrom_fd, fbuf) == 0)
1473 sanitize_path(fbuf, fbuf, "", 0, NULL);
1477 strlcpy(fbuf, *argv++, MAXPATHLEN);
1479 sanitize_path(fbuf, fbuf, "", 0, NULL);
1483 if (relative_paths) {
1484 /* We clean up fbuf below. */
1486 } else if (!len || fbuf[len - 1] == '/') {
1487 if (len == 2 && fbuf[0] == '.') {
1488 /* Turn "./" into just "." rather than "./." */
1491 if (len + 1 >= MAXPATHLEN)
1492 overflow_exit("send_file_list");
1497 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
1498 && (len == 2 || fbuf[len-3] == '/')) {
1499 if (len + 2 >= MAXPATHLEN)
1500 overflow_exit("send_file_list");
1506 is_dot_dir = fbuf[len-1] == '.'
1507 && (len == 1 || fbuf[len-2] == '/');
1512 if (!relative_paths) {
1513 p = strrchr(fbuf, '/');
1520 len -= p - fbuf + 1;
1525 if ((p = strstr(fbuf, "/./")) != NULL) {
1531 len -= p - fbuf + 3;
1535 /* Get rid of trailing "/" and "/.". */
1537 if (fn[len - 1] == '/') {
1539 if (!--len && !dir) {
1544 else if (len >= 2 && fn[len - 1] == '.'
1545 && fn[len - 2] == '/') {
1547 if (!(len -= 2) && !dir) {
1554 if (len == 1 && fn[0] == '/')
1557 /* Reject a ".." dir in the active part of the path. */
1558 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
1559 if ((p[2] == '/' || p[2] == '\0')
1560 && (p == fn || p[-1] == '/')) {
1562 "found \"..\" dir in relative path: %s\n",
1564 exit_cleanup(RERR_SYNTAX);
1574 dirlen = dir ? strlen(dir) : 0;
1575 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
1576 if (!push_flist_dir(dir ? strdup(dir) : NULL, dirlen))
1578 lastdir = flist_dir;
1579 lastdir_len = flist_dir_len;
1580 } else if (!push_flist_dir(lastdir, lastdir_len)) {
1582 io_error |= IOERR_GENERAL;
1583 rsyserr(FERROR, errno, "push_dir %s failed in %s",
1584 full_fname(dir), curr_dir);
1589 memmove(fbuf, fn, len + 1);
1591 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1592 io_error |= IOERR_GENERAL;
1593 rsyserr(FERROR, errno, "link_stat %s failed",
1598 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
1599 rprintf(FINFO, "skipping directory %s\n", fbuf);
1603 if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
1604 /* Send the implied directories at the start of the
1605 * source spec, so we get their permissions right. */
1606 char *lp = lastpath, *slash = fbuf;
1608 /* Skip any initial directories in our path that we
1609 * have in common with lastpath. */
1610 for (fn = fbuf; *fn && *lp == *fn; lp++, fn++) {
1615 if (fn != p || (*lp && *lp != '/')) {
1616 int save_copy_links = copy_links;
1617 int save_xfer_dirs = xfer_dirs;
1618 int dir_flags = inc_recurse ? FLAG_DIVERT_DIRS : 0;
1619 copy_links |= copy_unsafe_links;
1621 while ((slash = strchr(slash+1, '/')) != 0) {
1623 send_file_name(f, flist, fbuf, NULL,
1624 dir_flags, ALL_FILTERS);
1627 copy_links = save_copy_links;
1628 xfer_dirs = save_xfer_dirs;
1630 strlcpy(lastpath, fbuf, sizeof lastpath);
1635 if (one_file_system)
1636 filesystem_dev = st.st_dev;
1638 if (recurse || (xfer_dirs && is_dot_dir)) {
1639 struct file_struct *file;
1640 int top_flags = FLAG_TOP_DIR | FLAG_XFER_DIR
1641 | (is_dot_dir ? 0 : flags)
1642 | (inc_recurse ? FLAG_DIVERT_DIRS : 0);
1643 file = send_file_name(f, flist, fbuf, &st,
1644 top_flags, ALL_FILTERS);
1645 if (file && !inc_recurse)
1646 send_if_directory(f, flist, file, fbuf, len, flags);
1648 send_file_name(f, flist, fbuf, &st, flags, ALL_FILTERS);
1651 gettimeofday(&end_tv, NULL);
1652 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1653 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1654 if (stats.flist_buildtime == 0)
1655 stats.flist_buildtime = 1;
1658 write_byte(f, 0); /* Indicate end of file list */
1660 #ifdef SUPPORT_HARD_LINKS
1661 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
1665 if (show_filelist_p())
1666 finish_filelist_progress(flist);
1668 gettimeofday(&end_tv, NULL);
1669 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1670 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1672 /* Sort the list without removing any duplicates in non-incremental
1673 * mode. This allows the receiving side to ask for whatever name it
1674 * kept. For incremental mode, the sender also removes duplicates
1675 * in this initial file-list so that it avoids re-sending duplicated
1677 clean_flist(flist, 0, inc_recurse);
1678 file_total += flist->count;
1680 if (!numeric_ids && !inc_recurse)
1683 /* send the io_error flag */
1684 if (protocol_version < 30)
1685 write_int(f, ignore_errors ? 0 : io_error);
1686 else if (io_error && !ignore_errors)
1687 send_msg_int(MSG_IO_ERROR, io_error);
1689 if (disable_buffering)
1690 io_end_buffering_out();
1692 stats.flist_size = stats.total_written - start_write;
1693 stats.num_files = flist->count;
1696 output_flist(flist);
1699 rprintf(FINFO, "send_file_list done\n");
1702 add_dirs_to_tree(-1, 0, dir_flist->count - 1);
1703 if (send_dir_ndx < 0) {
1704 write_ndx(f, NDX_FLIST_EOF);
1707 else if (file_total == 1) {
1708 /* If we're creating incremental file-lists and there
1709 * was just 1 item in the first file-list, send 1 more
1710 * file-list to check if this is a 1-file xfer. */
1711 send_extra_file_list(f, 1);
1718 struct file_list *recv_file_list(int f)
1720 struct file_list *flist;
1725 rprintf(FLOG, "receiving file list\n");
1726 if (show_filelist_p())
1727 start_filelist_progress("receiving file list");
1728 else if (inc_recurse && verbose && !am_server && !first_flist)
1729 rprintf(FCLIENT, "receiving incremental file list\n");
1731 start_read = stats.total_read;
1733 flist = flist_new(0, "recv_file_list");
1735 #ifdef SUPPORT_HARD_LINKS
1736 if (preserve_hard_links && protocol_version < 30)
1741 if (flist->ndx_start == 0)
1742 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
1743 dstart = dir_flist->count;
1749 while ((flags = read_byte(f)) != 0) {
1750 struct file_struct *file;
1752 flist_expand(flist);
1754 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
1755 flags |= read_byte(f) << 8;
1756 file = recv_file_entry(flist, flags, f);
1758 if (inc_recurse && S_ISDIR(file->mode)) {
1759 flist_expand(dir_flist);
1760 dir_flist->files[dir_flist->count++] = file;
1763 flist->files[flist->count++] = file;
1765 maybe_emit_filelist_progress(flist->count);
1768 rprintf(FINFO, "recv_file_name(%s)\n",
1769 f_name(file, NULL));
1772 file_total += flist->count;
1775 rprintf(FINFO, "received %d names\n", flist->count);
1777 if (show_filelist_p())
1778 finish_filelist_progress(flist);
1780 clean_flist(flist, relative_paths, 1);
1783 qsort(dir_flist->files + dstart, dir_flist->count - dstart,
1784 sizeof dir_flist->files[0], (int (*)())file_compare);
1786 recv_uid_list(f, flist);
1788 if (protocol_version < 30) {
1789 /* Recv the io_error flag */
1793 io_error |= read_int(f);
1797 output_flist(flist);
1801 for (i = 0; i < flist->count; i++)
1802 list_file_entry(flist->files[i]);
1806 rprintf(FINFO, "recv_file_list done\n");
1808 stats.flist_size += stats.total_read - start_read;
1809 stats.num_files += flist->count;
1814 /* This is only used once by the receiver if the very first file-list
1815 * has exactly one item in it. */
1816 void recv_additional_file_list(int f)
1818 struct file_list *flist;
1819 int ndx = read_ndx(f);
1820 if (ndx == NDX_FLIST_EOF) {
1822 change_local_filter_dir(NULL, 0, 0);
1824 ndx = NDX_FLIST_OFFSET - ndx;
1825 if (ndx < 0 || ndx >= dir_flist->count) {
1826 ndx = NDX_FLIST_OFFSET - ndx;
1828 "Invalid dir index: %d (%d - %d)\n",
1829 ndx, NDX_FLIST_OFFSET,
1830 NDX_FLIST_OFFSET - dir_flist->count);
1831 exit_cleanup(RERR_PROTOCOL);
1833 flist = recv_file_list(f);
1834 flist->parent_ndx = ndx;
1838 /* Search for an identically-named item in the file list. Note that the
1839 * items must agree in their directory-ness, or no match is returned. */
1840 int flist_find(struct file_list *flist, struct file_struct *f)
1842 int low = flist->low, high = flist->high;
1843 int diff, mid, mid_up;
1845 while (low <= high) {
1846 mid = (low + high) / 2;
1847 if (F_IS_ACTIVE(flist->files[mid]))
1850 /* Scan for the next non-empty entry using the cached
1851 * distance values. If the value isn't fully up-to-
1852 * date, update it. */
1853 mid_up = mid + F_DEPTH(flist->files[mid]);
1854 if (!F_IS_ACTIVE(flist->files[mid_up])) {
1856 mid_up += F_DEPTH(flist->files[mid_up]);
1857 } while (!F_IS_ACTIVE(flist->files[mid_up]));
1858 F_DEPTH(flist->files[mid]) = mid_up - mid;
1860 if (mid_up > high) {
1861 /* If there's nothing left above us, set high to
1862 * a non-empty entry below us and continue. */
1863 high = mid - (int)flist->files[mid]->len32;
1864 if (!F_IS_ACTIVE(flist->files[high])) {
1866 high -= (int)flist->files[high]->len32;
1867 } while (!F_IS_ACTIVE(flist->files[high]));
1868 flist->files[mid]->len32 = mid - high;
1873 diff = f_name_cmp(flist->files[mid_up], f);
1875 if (protocol_version < 29
1876 && S_ISDIR(flist->files[mid_up]->mode)
1877 != S_ISDIR(f->mode))
1890 * Free up any resources a file_struct has allocated
1891 * and clear the file.
1893 void clear_file(struct file_struct *file)
1895 /* The +1 zeros out the first char of the basename. */
1896 memset(file, 0, FILE_STRUCT_LEN + 1);
1897 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
1898 * entry. Likewise for len32 in the opposite direction. We assume
1899 * that we're alone for now since flist_find() will adjust the counts
1900 * it runs into that aren't up-to-date. */
1901 file->len32 = F_DEPTH(file) = 1;
1904 /* Allocate a new file list. */
1905 struct file_list *flist_new(int flags, char *msg)
1907 struct file_list *flist;
1909 flist = new(struct file_list);
1913 memset(flist, 0, sizeof flist[0]);
1915 if (!(flags & FLIST_TEMP)) {
1917 flist->ndx_start = first_flist->prev->ndx_start
1918 + first_flist->prev->count;
1920 /* This is a doubly linked list with prev looping back to
1921 * the end of the list, but the last next pointer is NULL. */
1923 first_flist = cur_flist = flist->prev = flist;
1925 flist->prev = first_flist->prev;
1926 flist->prev->next = first_flist->prev = flist;
1931 if (!(flist->file_pool = pool_create(FILE_EXTENT, 0, out_of_memory, POOL_INTERN)))
1937 /* Free up all elements in a flist. */
1938 void flist_free(struct file_list *flist)
1941 ; /* Was FLIST_TEMP dir-list. */
1942 else if (flist == flist->prev) {
1943 first_flist = cur_flist = NULL;
1947 if (flist == cur_flist)
1948 cur_flist = flist->next;
1949 if (flist == first_flist)
1950 first_flist = first_flist->next;
1952 flist->prev->next = flist->next;
1954 flist->next = first_flist;
1956 flist->next->prev = flist->prev;
1957 file_total -= flist->count;
1961 pool_destroy(flist->file_pool);
1967 * This routine ensures we don't have any duplicate names in our file list.
1968 * duplicate names can cause corruption because of the pipelining
1970 static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
1972 char fbuf[MAXPATHLEN];
1977 if (flist->count == 0) {
1982 qsort(flist->files, flist->count,
1983 sizeof flist->files[0], (int (*)())file_compare);
1985 for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
1986 if (F_IS_ACTIVE(flist->files[i])) {
1991 flist->low = prev_i;
1992 while (++i < flist->count) {
1994 struct file_struct *file = flist->files[i];
1996 if (!F_IS_ACTIVE(file))
1998 if (f_name_cmp(file, flist->files[prev_i]) == 0)
2000 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2001 int save_mode = file->mode;
2002 /* Make sure that this directory doesn't duplicate a
2003 * non-directory earlier in the list. */
2004 flist->high = prev_i;
2005 file->mode = S_IFREG;
2006 j = flist_find(flist, file);
2007 file->mode = save_mode;
2011 struct file_struct *fp = flist->files[j];
2013 /* If one is a dir and the other is not, we want to
2014 * keep the dir because it might have contents in the
2016 if (S_ISDIR(file->mode) != S_ISDIR(fp->mode)) {
2017 if (S_ISDIR(file->mode))
2021 } else if (protocol_version < 27)
2025 if (verbose > 1 && !am_server) {
2027 "removing duplicate name %s from file list (%d)\n",
2028 f_name(file, fbuf), drop);
2030 /* Make sure we don't lose track of a user-specified
2032 flist->files[keep]->flags |= flist->files[drop]->flags
2033 & (FLAG_TOP_DIR|FLAG_XFER_DIR);
2035 clear_file(flist->files[drop]);
2038 if (flist->low == drop) {
2040 j < i && !F_IS_ACTIVE(flist->files[j]);
2049 flist->high = no_dups ? prev_i : flist->count - 1;
2052 /* We need to strip off the leading slashes for relative
2053 * paths, but this must be done _after_ the sorting phase. */
2054 for (i = flist->low; i <= flist->high; i++) {
2055 struct file_struct *file = flist->files[i];
2059 while (*file->dirname == '/')
2061 if (!*file->dirname)
2062 file->dirname = NULL;
2066 if (prune_empty_dirs && no_dups) {
2067 int j, prev_depth = 0;
2069 prev_i = 0; /* It's OK that this isn't really true. */
2071 for (i = flist->low; i <= flist->high; i++) {
2072 struct file_struct *fp, *file = flist->files[i];
2074 /* This temporarily abuses the F_DEPTH() value for a
2075 * directory that is in a chain that might get pruned.
2076 * We restore the old value if it gets a reprieve. */
2077 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2078 /* Dump empty dirs when coming back down. */
2079 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2080 fp = flist->files[prev_i];
2081 if (F_DEPTH(fp) >= 0)
2083 prev_i = -F_DEPTH(fp)-1;
2086 prev_depth = F_DEPTH(file);
2087 if (is_excluded(f_name(file, fbuf), 1,
2089 /* Keep dirs through this dir. */
2090 for (j = prev_depth-1; ; j--) {
2091 fp = flist->files[prev_i];
2092 if (F_DEPTH(fp) >= 0)
2094 prev_i = -F_DEPTH(fp)-1;
2098 F_DEPTH(file) = -prev_i-1;
2101 /* Keep dirs through this non-dir. */
2102 for (j = prev_depth; ; j--) {
2103 fp = flist->files[prev_i];
2104 if (F_DEPTH(fp) >= 0)
2106 prev_i = -F_DEPTH(fp)-1;
2111 /* Dump all remaining empty dirs. */
2113 struct file_struct *fp = flist->files[prev_i];
2114 if (F_DEPTH(fp) >= 0)
2116 prev_i = -F_DEPTH(fp)-1;
2120 for (i = flist->low; i <= flist->high; i++) {
2121 if (F_IS_ACTIVE(flist->files[i]))
2125 for (i = flist->high; i >= flist->low; i--) {
2126 if (F_IS_ACTIVE(flist->files[i]))
2133 static void output_flist(struct file_list *flist)
2135 char uidbuf[16], gidbuf[16], depthbuf[16];
2136 struct file_struct *file;
2137 const char *root, *dir, *slash, *name, *trail;
2138 const char *who = who_am_i();
2141 rprintf(FINFO, "[%s] flist start=%d, count=%d, low=%d, high=%d\n",
2142 who, flist->ndx_start, flist->count, flist->low, flist->high);
2143 for (i = 0; i < flist->count; i++) {
2144 file = flist->files[i];
2145 if ((am_root || am_sender) && preserve_uid) {
2146 snprintf(uidbuf, sizeof uidbuf, " uid=%ld",
2150 if (preserve_gid && F_GID(file) != GID_NONE) {
2151 snprintf(gidbuf, sizeof gidbuf, " gid=%ld",
2156 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2157 if (F_IS_ACTIVE(file)) {
2158 root = am_sender ? NS(F_ROOTDIR(file)) : depthbuf;
2159 if ((dir = file->dirname) == NULL)
2163 name = file->basename;
2164 trail = S_ISDIR(file->mode) ? "/" : "";
2166 root = dir = slash = name = trail = "";
2167 rprintf(FINFO, "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2168 who, i, root, dir, slash, name, trail, (int)file->mode,
2169 (double)F_LENGTH(file), uidbuf, gidbuf, file->flags);
2173 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2174 enum fnc_type { t_PATH, t_ITEM };
2176 /* Compare the names of two file_struct entities, similar to how strcmp()
2177 * would do if it were operating on the joined strings.
2179 * Some differences beginning with protocol_version 29: (1) directory names
2180 * are compared with an assumed trailing slash so that they compare in a
2181 * way that would cause them to sort immediately prior to any content they
2182 * may have; (2) a directory of any name compares after a non-directory of
2183 * any name at the same depth; (3) a directory with name "." compares prior
2184 * to anything else. These changes mean that a directory and a non-dir
2185 * with the same name will not compare as equal (protocol_version >= 29).
2187 * The dirname component can be an empty string, but the basename component
2188 * cannot (and never is in the current codebase). The basename component
2189 * may be NULL (for a removed item), in which case it is considered to be
2190 * after any existing item. */
2191 int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
2194 const uchar *c1, *c2;
2195 enum fnc_state state1, state2;
2196 enum fnc_type type1, type2;
2197 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2199 if (!f1 || !F_IS_ACTIVE(f1)) {
2200 if (!f2 || !F_IS_ACTIVE(f2))
2204 if (!f2 || !F_IS_ACTIVE(f2))
2207 c1 = (uchar*)f1->dirname;
2208 c2 = (uchar*)f2->dirname;
2212 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2213 c1 = (const uchar*)f1->basename;
2214 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2216 state1 = s_TRAILING;
2225 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2226 c2 = (const uchar*)f2->basename;
2227 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2229 state2 = s_TRAILING;
2239 return type1 == t_PATH ? 1 : -1;
2249 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2250 c1 = (const uchar*)f1->basename;
2251 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2253 state1 = s_TRAILING;
2259 state1 = s_TRAILING;
2260 if (type1 == t_PATH) {
2269 if (*c2 && type1 != type2)
2270 return type1 == t_PATH ? 1 : -1;
2279 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2280 c2 = (const uchar*)f2->basename;
2281 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2283 state2 = s_TRAILING;
2289 state2 = s_TRAILING;
2290 if (type2 == t_PATH) {
2302 return type1 == t_PATH ? 1 : -1;
2304 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2309 char *f_name_buf(void)
2311 static char names[5][MAXPATHLEN];
2312 static unsigned int n;
2314 n = (n + 1) % (sizeof names / sizeof names[0]);
2319 /* Return a copy of the full filename of a flist entry, using the indicated
2320 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
2321 * done because we checked the size when creating the file_struct entry.
2323 char *f_name(struct file_struct *f, char *fbuf)
2325 if (!f || !F_IS_ACTIVE(f))
2329 fbuf = f_name_buf();
2332 int len = strlen(f->dirname);
2333 memcpy(fbuf, f->dirname, len);
2335 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
2337 strlcpy(fbuf, f->basename, MAXPATHLEN);
2342 /* Do a non-recursive scan of the named directory, possibly ignoring all
2343 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
2344 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
2345 * buffer (the functions we call will append names onto the end, but the old
2346 * dir value will be restored on exit). */
2347 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
2349 struct file_list *dirlist;
2350 char dirbuf[MAXPATHLEN];
2351 int save_recurse = recurse;
2352 int save_xfer_dirs = xfer_dirs;
2355 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
2356 if (dlen >= MAXPATHLEN)
2361 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
2365 send_directory(ignore_filter_rules ? -2 : -1, dirlist, -1, dirname, dlen, 0);
2366 xfer_dirs = save_xfer_dirs;
2367 recurse = save_recurse;
2369 flist_count_offset += dirlist->count;
2371 clean_flist(dirlist, 0, 0);
2374 output_flist(dirlist);