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, 2003, 2004, 2005, 2006 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 2 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, write to the Free Software Foundation, Inc.,
21 * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA.
33 extern int incremental;
34 extern int do_progress;
35 extern int always_checksum;
37 extern int ignore_errors;
38 extern int numeric_ids;
41 extern int filesfrom_fd;
42 extern int one_file_system;
43 extern int copy_dirlinks;
44 extern int keep_dirlinks;
45 extern int preserve_links;
46 extern int preserve_hard_links;
47 extern int preserve_devices;
48 extern int preserve_specials;
49 extern int preserve_uid;
50 extern int preserve_gid;
51 extern int relative_paths;
52 extern int implied_dirs;
53 extern int file_extra_cnt;
54 extern int ignore_perishable;
55 extern int non_perishable_cnt;
56 extern int prune_empty_dirs;
57 extern int copy_links;
58 extern int copy_unsafe_links;
59 extern int protocol_version;
60 extern int sanitize_paths;
61 extern struct stats stats;
63 extern char curr_dir[MAXPATHLEN];
65 extern struct chmod_mode_struct *chmod_modes;
67 extern struct filter_list_struct filter_list;
68 extern struct filter_list_struct server_filter_list;
72 dev_t filesystem_dev; /* used to implement -x */
74 struct file_list *cur_flist, *first_flist, *dir_flist;
75 int send_dir_ndx = -1, send_dir_depth = 0;
76 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
77 int file_total = 0; /* total of all active items over all file-lists */
78 int flist_eof = 0; /* all the file-lists are now known */
80 /* The tmp_* vars are used as a cache area by make_file() to store data
81 * that the sender doesn't need to remember in its file list. The data
82 * will survive just long enough to be used by send_file_entry(). */
83 static dev_t tmp_rdev;
84 #ifdef SUPPORT_HARD_LINKS
85 static int64 tmp_dev, tmp_ino;
87 static char tmp_sum[MD4_SUM_LENGTH];
89 static char empty_sum[MD4_SUM_LENGTH];
90 static int flist_count_offset; /* for --delete --progress */
92 static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
93 static void output_flist(struct file_list *flist);
98 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
99 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
101 checksum_len = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
104 static int show_filelist_p(void)
106 return verbose && xfer_dirs && !am_server && !incremental;
109 static void start_filelist_progress(char *kind)
111 rprintf(FCLIENT, "%s ... ", kind);
112 if (verbose > 1 || do_progress)
113 rprintf(FCLIENT, "\n");
117 static void emit_filelist_progress(int count)
119 rprintf(FCLIENT, " %d files...\r", count);
122 static void maybe_emit_filelist_progress(int count)
124 if (do_progress && show_filelist_p() && (count % 100) == 0)
125 emit_filelist_progress(count);
128 static void finish_filelist_progress(const struct file_list *flist)
131 /* This overwrites the progress line */
132 rprintf(FINFO, "%d file%sto consider\n",
133 flist->count, flist->count == 1 ? " " : "s ");
135 rprintf(FINFO, "done\n");
138 void show_flist_stats(void)
143 static void list_file_entry(struct file_struct *f)
145 char permbuf[PERMSTRING_SIZE];
148 if (!F_IS_ACTIVE(f)) {
149 /* this can happen if duplicate names were removed */
153 permstring(permbuf, f->mode);
157 if (preserve_links && S_ISLNK(f->mode)) {
158 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
159 permbuf, len, timestring(f->modtime),
160 f_name(f, NULL), F_SYMLINK(f));
164 rprintf(FINFO, "%s %11.0f %s %s\n",
165 permbuf, len, timestring(f->modtime),
170 /* Stat either a symlink or its referent, depending on the settings of
171 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
173 * If path is the name of a symlink, then the linkbuf buffer (which must hold
174 * MAXPATHLEN chars) will be set to the symlink's target string.
176 * The stat structure pointed to by stp will contain information about the
177 * link or the referent as appropriate, if they exist. */
178 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
181 if (link_stat(path, stp, copy_dirlinks) < 0)
183 if (S_ISLNK(stp->st_mode)) {
184 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
187 linkbuf[llen] = '\0';
188 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
190 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
193 return do_stat(path, stp);
198 return do_stat(path, stp);
202 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
206 return do_stat(path, stp);
207 if (do_lstat(path, stp) < 0)
209 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
211 if (do_stat(path, &st) == 0 && S_ISDIR(st.st_mode))
216 return do_stat(path, stp);
220 /* This function is used to check if a file should be included/excluded
221 * from the list of files based on its name and type etc. The value of
222 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
223 static int is_excluded(char *fname, int is_dir, int filter_level)
225 #if 0 /* This currently never happens, so avoid a useless compare. */
226 if (filter_level == NO_FILTERS)
230 /* never exclude '.', even if somebody does --exclude '*' */
231 if (fname[0] == '.' && !fname[1])
233 /* Handle the -R version of the '.' dir. */
234 if (fname[0] == '/') {
235 int len = strlen(fname);
236 if (fname[len-1] == '.' && fname[len-2] == '/')
240 if (server_filter_list.head
241 && check_filter(&server_filter_list, fname, is_dir) < 0)
243 if (filter_level != ALL_FILTERS)
246 && check_filter(&filter_list, fname, is_dir) < 0)
251 static int to_wire_mode(mode_t mode)
254 #if _S_IFLNK != 0120000
256 return (mode & ~(_S_IFMT)) | 0120000;
262 static mode_t from_wire_mode(int mode)
264 #if _S_IFLNK != 0120000
265 if ((mode & (_S_IFMT)) == 0120000)
266 return (mode & ~(_S_IFMT)) | _S_IFLNK;
271 static void send_directory(int f, struct file_list *flist, int ndx,
272 char *fbuf, int len, int flags);
274 static const char *flist_dir, *orig_dir;
275 static int flist_dir_len;
279 * Make sure @p flist is big enough to hold at least @p flist->count
282 void flist_expand(struct file_list *flist)
284 struct file_struct **new_ptr;
286 if (flist->count < flist->malloced)
289 if (flist->malloced < FLIST_START)
290 flist->malloced = FLIST_START;
291 else if (flist->malloced >= FLIST_LINEAR)
292 flist->malloced += FLIST_LINEAR;
294 flist->malloced *= 2;
297 * In case count jumped or we are starting the list
298 * with a known size just set it.
300 if (flist->malloced < flist->count)
301 flist->malloced = flist->count;
303 new_ptr = realloc_array(flist->files, struct file_struct *,
306 if (verbose >= 2 && flist->malloced != FLIST_START) {
307 rprintf(FCLIENT, "[%s] expand file_list to %.0f bytes, did%s move\n",
309 (double)sizeof flist->files[0] * flist->malloced,
310 (new_ptr == flist->files) ? " not" : "");
313 flist->files = new_ptr;
316 out_of_memory("flist_expand");
319 int push_flist_dir(const char *dir, int len)
321 if (dir == flist_dir)
325 orig_dir = strdup(curr_dir);
327 if (flist_dir && !pop_dir(orig_dir)) {
328 rsyserr(FERROR, errno, "pop_dir %s failed",
329 full_fname(orig_dir));
330 exit_cleanup(RERR_FILESELECT);
333 if (dir && !push_dir(dir, 0)) {
334 io_error |= IOERR_GENERAL;
335 rsyserr(FERROR, errno, "push_dir %s failed",
341 flist_dir_len = len >= 0 ? len : dir ? (int)strlen(dir) : 0;
346 static void send_file_entry(struct file_struct *file, int f, int ndx)
348 static time_t modtime;
352 static uint32 rdev_major;
355 static char *user_name, *group_name;
356 static char lastname[MAXPATHLEN];
357 char fname[MAXPATHLEN];
358 int first_hlink_ndx = -1;
364 flags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
366 if (file->mode == mode)
367 flags |= XMIT_SAME_MODE;
370 if ((preserve_devices && IS_DEVICE(mode))
371 || (preserve_specials && IS_SPECIAL(mode))) {
372 if (protocol_version < 28) {
373 if (tmp_rdev == rdev)
374 flags |= XMIT_SAME_RDEV_pre28;
379 if ((uint32)major(rdev) == rdev_major)
380 flags |= XMIT_SAME_RDEV_MAJOR;
382 rdev_major = major(rdev);
383 if ((uint32)minor(rdev) <= 0xFFu)
384 flags |= XMIT_RDEV_MINOR_IS_SMALL;
386 } else if (protocol_version < 28)
387 rdev = MAKEDEV(0, 0);
389 if (F_UID(file) == uid && *lastname)
390 flags |= XMIT_SAME_UID;
393 if (preserve_uid && !numeric_ids) {
394 user_name = add_uid(uid);
395 if (incremental && user_name)
396 flags |= XMIT_USER_NAME_FOLLOWS;
401 if (F_GID(file) == gid && *lastname)
402 flags |= XMIT_SAME_GID;
405 if (preserve_gid && !numeric_ids) {
406 group_name = add_gid(gid);
407 if (incremental && group_name)
408 flags |= XMIT_GROUP_NAME_FOLLOWS;
412 if (file->modtime == modtime)
413 flags |= XMIT_SAME_TIME;
415 modtime = file->modtime;
417 #ifdef SUPPORT_HARD_LINKS
419 if (protocol_version >= 30) {
420 struct idev_node *np = idev_node(tmp_dev, tmp_ino);
421 first_hlink_ndx = (int32)np->data - 1;
422 if (first_hlink_ndx < 0) {
423 np->data = (void*)(ndx + 1);
424 flags |= XMIT_HLINK_FIRST;
426 flags |= XMIT_HLINKED;
428 if (tmp_dev == dev) {
429 if (protocol_version >= 28)
430 flags |= XMIT_SAME_DEV_pre30;
433 flags |= XMIT_HLINKED;
439 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
441 l2 = strlen(fname+l1);
444 flags |= XMIT_SAME_NAME;
446 flags |= XMIT_LONG_NAME;
448 /* We must make sure we don't send a zero flag byte or the
449 * other end will terminate the flist transfer. Note that
450 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
451 * it's harmless way to add a bit to the first flag byte. */
452 if (protocol_version >= 28) {
453 if (!flags && !S_ISDIR(mode))
454 flags |= XMIT_TOP_DIR;
455 if ((flags & 0xFF00) || !flags) {
456 flags |= XMIT_EXTENDED_FLAGS;
457 write_shortint(f, flags);
459 write_byte(f, flags);
462 flags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
463 write_byte(f, flags);
465 if (flags & XMIT_SAME_NAME)
467 if (flags & XMIT_LONG_NAME)
471 write_buf(f, fname + l1, l2);
473 if (first_hlink_ndx >= 0) {
474 write_int(f, first_hlink_ndx);
478 write_longint(f, F_LENGTH(file));
479 if (!(flags & XMIT_SAME_TIME))
480 write_int(f, modtime);
481 if (!(flags & XMIT_SAME_MODE))
482 write_int(f, to_wire_mode(mode));
483 if (preserve_uid && !(flags & XMIT_SAME_UID)) {
485 if (flags & XMIT_USER_NAME_FOLLOWS) {
486 int len = strlen(user_name);
488 write_buf(f, user_name, len);
491 if (preserve_gid && !(flags & XMIT_SAME_GID)) {
493 if (flags & XMIT_GROUP_NAME_FOLLOWS) {
494 int len = strlen(group_name);
496 write_buf(f, group_name, len);
499 if ((preserve_devices && IS_DEVICE(mode))
500 || (preserve_specials && IS_SPECIAL(mode))) {
501 if (protocol_version < 28) {
502 if (!(flags & XMIT_SAME_RDEV_pre28))
503 write_int(f, (int)rdev);
505 if (!(flags & XMIT_SAME_RDEV_MAJOR))
506 write_int(f, major(rdev));
507 if (flags & XMIT_RDEV_MINOR_IS_SMALL)
508 write_byte(f, minor(rdev));
510 write_int(f, minor(rdev));
515 if (preserve_links && S_ISLNK(mode)) {
516 const char *sl = F_SYMLINK(file);
517 int len = strlen(sl);
519 write_buf(f, sl, len);
523 #ifdef SUPPORT_HARD_LINKS
524 if (tmp_dev != 0 && protocol_version < 30) {
525 if (protocol_version < 26) {
526 /* 32-bit dev_t and ino_t */
527 write_int(f, (int32)dev);
528 write_int(f, (int32)tmp_ino);
530 /* 64-bit dev_t and ino_t */
531 if (!(flags & XMIT_SAME_DEV_pre30))
532 write_longint(f, dev);
533 write_longint(f, tmp_ino);
538 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
543 /* Prior to 28, we sent a useless set of nulls. */
546 write_buf(f, sum, checksum_len);
550 strlcpy(lastname, fname, MAXPATHLEN);
553 static struct file_struct *recv_file_entry(struct file_list *flist,
556 static time_t modtime;
560 static uint32 rdev_major;
563 static char lastname[MAXPATHLEN], *lastdir;
564 static int lastdir_depth, lastdir_len = -1;
565 static unsigned int del_hier_name_len = 0;
566 static int in_del_hier = 0;
567 char thisname[MAXPATHLEN];
568 unsigned int l1 = 0, l2 = 0;
569 int alloc_len, basename_len, linkname_len;
570 int extra_len = file_extra_cnt * EXTRA_LEN;
571 int first_hlink_ndx = -1;
573 const char *basename;
575 struct file_struct *file;
577 if (flags & XMIT_SAME_NAME)
580 if (flags & XMIT_LONG_NAME)
585 if (l2 >= MAXPATHLEN - l1) {
587 "overflow: flags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
588 flags, l1, l2, lastname, who_am_i());
589 overflow_exit("recv_file_entry");
592 strlcpy(thisname, lastname, l1 + 1);
593 read_sbuf(f, &thisname[l1], l2);
594 thisname[l1 + l2] = 0;
596 strlcpy(lastname, thisname, MAXPATHLEN);
598 clean_fname(thisname, 0);
601 sanitize_path(thisname, thisname, "", 0, NULL);
603 if ((basename = strrchr(thisname, '/')) != NULL) {
604 int len = basename++ - thisname;
605 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
606 lastdir = new_array(char, len + 1);
607 memcpy(lastdir, thisname, len);
610 lastdir_depth = count_dir_elements(lastdir);
614 basename_len = strlen(basename) + 1; /* count the '\0' */
616 #ifdef SUPPORT_HARD_LINKS
617 if (protocol_version >= 30
618 && BITS_SETnUNSET(flags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
619 struct file_struct *first;
620 first_hlink_ndx = read_int(f);
621 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->count) {
623 "hard-link reference out of range: %d (%d)\n",
624 first_hlink_ndx, flist->count);
625 exit_cleanup(RERR_PROTOCOL);
627 first = flist->files[first_hlink_ndx];
628 file_length = F_LENGTH(first);
629 modtime = first->modtime;
635 if ((preserve_devices && IS_DEVICE(mode))
636 || (preserve_specials && IS_SPECIAL(mode))) {
637 uint32 *devp = F_RDEV_P(first);
638 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
640 if (preserve_links && S_ISLNK(mode))
641 linkname_len = strlen(F_SYMLINK(first)) + 1;
648 file_length = read_longint(f);
649 if (!(flags & XMIT_SAME_TIME))
650 modtime = (time_t)read_int(f);
651 if (!(flags & XMIT_SAME_MODE))
652 mode = from_wire_mode(read_int(f));
654 if (chmod_modes && !S_ISLNK(mode))
655 mode = tweak_mode(mode, chmod_modes);
657 if (preserve_uid && !(flags & XMIT_SAME_UID)) {
658 uid = (uid_t)read_int(f);
659 if (flags & XMIT_USER_NAME_FOLLOWS)
660 uid = recv_user_name(f, uid);
661 else if (incremental && am_root && !numeric_ids)
662 uid = match_uid(uid);
664 if (preserve_gid && !(flags & XMIT_SAME_GID)) {
665 gid = (gid_t)read_int(f);
666 if (flags & XMIT_GROUP_NAME_FOLLOWS)
667 gid = recv_group_name(f, gid);
668 else if (incremental && (!am_root || !numeric_ids))
669 gid = match_gid(gid);
672 if ((preserve_devices && IS_DEVICE(mode))
673 || (preserve_specials && IS_SPECIAL(mode))) {
674 if (protocol_version < 28) {
675 if (!(flags & XMIT_SAME_RDEV_pre28))
676 rdev = (dev_t)read_int(f);
679 if (!(flags & XMIT_SAME_RDEV_MAJOR))
680 rdev_major = read_int(f);
681 if (flags & XMIT_RDEV_MINOR_IS_SMALL)
682 rdev_minor = read_byte(f);
684 rdev_minor = read_int(f);
685 rdev = MAKEDEV(rdev_major, rdev_minor);
687 extra_len += 2 * EXTRA_LEN;
689 } else if (protocol_version < 28)
690 rdev = MAKEDEV(0, 0);
693 if (preserve_links && S_ISLNK(mode)) {
694 linkname_len = read_int(f) + 1; /* count the '\0' */
695 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
696 rprintf(FERROR, "overflow: linkname_len=%d\n",
698 overflow_exit("recv_file_entry");
705 #ifdef SUPPORT_HARD_LINKS
707 if (preserve_hard_links) {
708 if (protocol_version < 28 && S_ISREG(mode))
709 flags |= XMIT_HLINKED;
710 if (flags & XMIT_HLINKED)
711 extra_len += EXTRA_LEN;
715 if (always_checksum && S_ISREG(mode))
716 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
718 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
719 extra_len += EXTRA_LEN;
721 #if EXTRA_ROUNDING > 0
722 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
723 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
726 if (incremental && S_ISDIR(mode)) {
727 if (one_file_system) {
728 /* Room to save the dir's device for -x */
729 extra_len += 2 * EXTRA_LEN;
734 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
736 bp = pool_alloc(flist->file_pool, alloc_len, "recv_file_entry");
738 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
740 file = (struct file_struct *)bp;
741 bp += FILE_STRUCT_LEN;
743 memcpy(bp, basename, basename_len);
744 bp += basename_len + linkname_len; /* skip space for symlink too */
746 #ifdef SUPPORT_HARD_LINKS
747 if (flags & XMIT_HLINKED)
748 file->flags |= FLAG_HLINKED;
750 file->modtime = modtime;
751 file->len32 = (uint32)file_length;
752 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
753 file->flags |= FLAG_LENGTH64;
754 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
762 if (basename != thisname) {
763 file->dirname = lastdir;
764 F_DEPTH(file) = lastdir_depth + 1;
769 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
771 if (flags & XMIT_TOP_DIR) {
772 in_del_hier = recurse;
773 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
774 if (relative_paths && del_hier_name_len > 2
775 && lastname[del_hier_name_len-1] == '.'
776 && lastname[del_hier_name_len-2] == '/')
777 del_hier_name_len -= 2;
778 file->flags |= FLAG_TOP_DIR | FLAG_XFER_DIR;
779 } else if (in_del_hier) {
780 if (!relative_paths || !del_hier_name_len
781 || (l1 >= del_hier_name_len
782 && lastname[del_hier_name_len] == '/'))
783 file->flags |= FLAG_XFER_DIR;
789 if ((preserve_devices && IS_DEVICE(mode))
790 || (preserve_specials && IS_SPECIAL(mode))) {
791 uint32 *devp = F_RDEV_P(file);
792 DEV_MAJOR(devp) = major(rdev);
793 DEV_MINOR(devp) = minor(rdev);
798 bp = (char*)file->basename + basename_len;
799 if (first_hlink_ndx >= 0) {
800 struct file_struct *first = flist->files[first_hlink_ndx];
801 memcpy(bp, F_SYMLINK(first), linkname_len);
803 read_sbuf(f, bp, linkname_len - 1);
805 sanitize_path(bp, bp, "", lastdir_depth, NULL);
809 #ifdef SUPPORT_HARD_LINKS
810 if (preserve_hard_links && flags & XMIT_HLINKED) {
811 if (protocol_version >= 30) {
812 F_HL_GNUM(file) = flags & XMIT_HLINK_FIRST
813 ? flist->count : first_hlink_ndx;
815 static int32 cnt = 0;
816 struct idev_node *np;
819 if (protocol_version < 26) {
823 if (!(flags & XMIT_SAME_DEV_pre30))
824 dev = read_longint(f);
825 ino = read_longint(f);
827 np = idev_node(dev, ino);
828 ndx = (int32)np->data - 1;
831 np->data = (void*)cnt;
833 F_HL_GNUM(file) = ndx;
838 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
840 bp = (char*)F_SUM(file);
842 /* Prior to 28, we get a useless set of nulls. */
845 if (first_hlink_ndx >= 0) {
846 struct file_struct *first = flist->files[first_hlink_ndx];
847 memcpy(bp, F_SUM(first), checksum_len);
849 read_buf(f, bp, checksum_len);
856 * Create a file_struct for a named file by reading its stat()
857 * information and performing extensive checks against global
860 * @return the new file, or NULL if there was an error or this file
861 * should be excluded.
863 * @todo There is a small optimization opportunity here to avoid
864 * stat()ing the file in some circumstances, which has a certain cost.
865 * We are called immediately after doing readdir(), and so we may
866 * already know the d_type of the file. We could for example avoid
867 * statting directories if we're not recursing, but this is not a very
868 * important case. Some systems may not have d_type.
870 struct file_struct *make_file(const char *fname, struct file_list *flist,
871 STRUCT_STAT *stp, int flags, int filter_level)
873 static char *lastdir;
874 static int lastdir_len = -1;
875 struct file_struct *file;
877 char thisname[MAXPATHLEN];
878 char linkname[MAXPATHLEN];
879 int alloc_len, basename_len, linkname_len;
880 int extra_len = file_extra_cnt * EXTRA_LEN;
881 const char *basename;
884 if (strlcpy(thisname, fname, sizeof thisname)
885 >= sizeof thisname - flist_dir_len) {
886 rprintf(FINFO, "skipping overly long name: %s\n", fname);
889 clean_fname(thisname, 0);
891 sanitize_path(thisname, thisname, "", 0, NULL);
893 if (stp && S_ISDIR(stp->st_mode)) {
894 st = *stp; /* Needed for "symlink/." with --relative. */
895 *linkname = '\0'; /* make IBM code checker happy */
896 } else if (readlink_stat(thisname, &st, linkname) != 0) {
897 int save_errno = errno;
898 /* See if file is excluded before reporting an error. */
899 if (filter_level != NO_FILTERS
900 && (is_excluded(thisname, 0, filter_level)
901 || is_excluded(thisname, 1, filter_level))) {
902 if (ignore_perishable && save_errno != ENOENT)
903 non_perishable_cnt++;
906 if (save_errno == ENOENT) {
908 /* Avoid "vanished" error if symlink points nowhere. */
909 if (copy_links && do_lstat(thisname, &st) == 0
910 && S_ISLNK(st.st_mode)) {
911 io_error |= IOERR_GENERAL;
912 rprintf(FERROR, "symlink has no referent: %s\n",
913 full_fname(thisname));
917 enum logcode c = am_daemon && protocol_version < 28
919 io_error |= IOERR_VANISHED;
920 rprintf(c, "file has vanished: %s\n",
921 full_fname(thisname));
924 io_error |= IOERR_GENERAL;
925 rsyserr(FERROR, save_errno, "readlink %s failed",
926 full_fname(thisname));
931 /* backup.c calls us with filter_level set to NO_FILTERS. */
932 if (filter_level == NO_FILTERS)
935 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
936 rprintf(FINFO, "skipping directory %s\n", thisname);
940 /* -x only affects directories because we need to avoid recursing
941 * into a mount-point directory, not to avoid copying a symlinked
942 * file if -L (or similar) was specified. */
943 if (one_file_system && st.st_dev != filesystem_dev
944 && S_ISDIR(st.st_mode)) {
945 if (one_file_system > 1) {
947 rprintf(FINFO, "skipping mount-point dir %s\n",
952 flags |= FLAG_MOUNT_DIR;
955 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
956 if (ignore_perishable)
957 non_perishable_cnt++;
961 if (lp_ignore_nonreadable(module_id)) {
963 if (!S_ISLNK(st.st_mode))
965 if (access(thisname, R_OK) != 0)
971 /* Only divert a directory in the main transfer. */
972 if (flist && flist->prev && S_ISDIR(st.st_mode)
973 && flags & FLAG_DIVERT_DIRS) {
975 /* Room for parent/sibling/next-child info. */
976 extra_len += 3 * EXTRA_LEN;
980 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
981 who_am_i(), thisname, filter_level);
984 if ((basename = strrchr(thisname, '/')) != NULL) {
985 int len = basename++ - thisname;
986 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
987 lastdir = new_array(char, len + 1);
988 memcpy(lastdir, thisname, len);
994 basename_len = strlen(basename) + 1; /* count the '\0' */
997 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1002 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1003 extra_len += EXTRA_LEN;
1005 #if EXTRA_ROUNDING > 0
1006 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1007 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1010 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1013 bp = pool_alloc(flist->file_pool, alloc_len, "make_file");
1015 if (!(bp = new_array(char, alloc_len)))
1016 out_of_memory("make_file");
1019 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1021 file = (struct file_struct *)bp;
1022 bp += FILE_STRUCT_LEN;
1024 memcpy(bp, basename, basename_len);
1025 bp += basename_len + linkname_len; /* skip space for symlink too */
1027 #ifdef SUPPORT_HARD_LINKS
1028 if (preserve_hard_links && flist && flist->prev) {
1029 if (protocol_version >= 28
1030 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1031 : S_ISREG(st.st_mode)) {
1032 tmp_dev = st.st_dev;
1033 tmp_ino = st.st_ino;
1039 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1040 if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1041 tmp_rdev = st.st_rdev;
1046 file->flags = flags;
1047 file->modtime = st.st_mtime;
1048 file->len32 = (uint32)st.st_size;
1049 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1050 file->flags |= FLAG_LENGTH64;
1051 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1053 file->mode = st.st_mode;
1055 F_UID(file) = st.st_uid;
1057 F_GID(file) = st.st_gid;
1059 if (basename != thisname)
1060 file->dirname = lastdir;
1062 #ifdef SUPPORT_LINKS
1064 bp = (char*)file->basename + basename_len;
1065 memcpy(bp, linkname, linkname_len);
1069 if (always_checksum && am_sender && S_ISREG(st.st_mode))
1070 file_checksum(thisname, tmp_sum, st.st_size);
1072 F_ROOTDIR(file) = flist_dir;
1074 /* This code is only used by the receiver when it is building
1075 * a list of files for a delete pass. */
1076 if (keep_dirlinks && linkname_len && flist) {
1078 int save_mode = file->mode;
1079 file->mode = S_IFDIR; /* Find a directory with our name. */
1080 if (flist_find(dir_flist, file) >= 0
1081 && do_stat(thisname, &st2) == 0 && S_ISDIR(st2.st_mode)) {
1082 file->modtime = st2.st_mtime;
1084 file->mode = st2.st_mode;
1086 F_UID(file) = st2.st_uid;
1088 F_GID(file) = st2.st_gid;
1090 file->mode = save_mode;
1093 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
1094 stats.total_size += st.st_size;
1096 if (basename_len == 0+1)
1099 if (incremental && flist == dir_flist) {
1100 flist_expand(flist);
1101 flist->files[flist->count++] = file;
1107 /* Only called for temporary file_struct entries created by make_file(). */
1108 void unmake_file(struct file_struct *file)
1110 int extra_cnt = file_extra_cnt + LEN64_BUMP(file);
1111 #if EXTRA_ROUNDING > 0
1112 if (extra_cnt & EXTRA_ROUNDING)
1113 extra_cnt = (extra_cnt | EXTRA_ROUNDING) + 1;
1115 free(REQ_EXTRA(file, extra_cnt));
1118 static struct file_struct *send_file_name(struct file_list *flist,
1119 char *fname, STRUCT_STAT *stp,
1120 int flags, int filter_flags)
1122 struct file_struct *file;
1124 file = make_file(fname, flist, stp, flags, filter_flags);
1128 if (chmod_modes && !S_ISLNK(file->mode))
1129 file->mode = tweak_mode(file->mode, chmod_modes);
1131 maybe_emit_filelist_progress(flist->count + flist_count_offset);
1133 flist_expand(flist);
1134 flist->files[flist->count++] = file;
1138 static void send_if_directory(int f, struct file_list *flist,
1139 struct file_struct *file,
1140 char *fbuf, unsigned int ol,
1143 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1145 if (S_ISDIR(file->mode)
1146 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1148 unsigned int len = strlen(fbuf);
1149 if (len > 1 && fbuf[len-1] == '/')
1151 if (len >= MAXPATHLEN - 1) {
1152 io_error |= IOERR_GENERAL;
1153 rprintf(FERROR, "skipping long-named directory: %s\n",
1157 save_filters = push_local_filters(fbuf, len);
1158 send_directory(f, flist, -1, fbuf, len, flags);
1159 pop_local_filters(save_filters);
1166 static int file_compare(struct file_struct **file1, struct file_struct **file2)
1168 return f_name_cmp(*file1, *file2);
1171 /* We take an entire set of sibling dirs from dir_flist (start <= ndx <= end),
1172 * sort them by name, and link them into the tree, setting the appropriate
1173 * parent/child/sibling pointers. */
1174 static void add_dirs_to_tree(int parent_ndx, int start, int end)
1178 int32 *parent_dp = parent_ndx < 0 ? NULL
1179 : F_DIRNODE_P(dir_flist->files[parent_ndx]);
1181 qsort(dir_flist->files + start, end - start + 1,
1182 sizeof dir_flist->files[0], (int (*)())file_compare);
1184 for (i = start; i <= end; i++) {
1185 struct file_struct *file = dir_flist->files[i];
1186 if (!(file->flags & FLAG_XFER_DIR)
1187 || file->flags & FLAG_MOUNT_DIR)
1190 DIR_NEXT_SIBLING(dp) = i;
1192 DIR_FIRST_CHILD(parent_dp) = i;
1195 dp = F_DIRNODE_P(file);
1196 DIR_PARENT(dp) = parent_ndx;
1197 DIR_FIRST_CHILD(dp) = -1;
1200 DIR_NEXT_SIBLING(dp) = -1;
1203 /* This function is normally called by the sender, but the receiving side also
1204 * calls it from get_dirlist() with f set to -1 so that we just construct the
1205 * file list in memory without sending it over the wire. Also, get_dirlist()
1206 * might call this with f set to -2, which also indicates that local filter
1207 * rules should be ignored. */
1208 static void send_directory(int f, struct file_list *flist, int parent_ndx,
1209 char *fbuf, int len, int flags)
1215 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1216 int start = divert_dirs ? dir_flist->count : flist->count;
1217 int filter_flags = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1218 struct file_struct *file;
1220 assert(flist != NULL);
1222 if (!(d = opendir(fbuf))) {
1223 io_error |= IOERR_GENERAL;
1224 rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
1229 if (len != 1 || *fbuf != '/')
1232 remainder = MAXPATHLEN - (p - fbuf);
1234 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1235 char *dname = d_name(di);
1236 if (dname[0] == '.' && (dname[1] == '\0'
1237 || (dname[1] == '.' && dname[2] == '\0')))
1239 if (strlcpy(p, dname, remainder) >= remainder) {
1240 io_error |= IOERR_GENERAL;
1242 "cannot send long-named file %s\n",
1247 file = send_file_name(flist, fbuf, NULL, flags, filter_flags);
1249 send_file_entry(file, f, flist->count - 1);
1255 io_error |= IOERR_GENERAL;
1256 rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
1265 add_dirs_to_tree(parent_ndx, start, dir_flist->count - 1);
1267 int i, end = flist->count - 1;
1268 /* send_if_directory() bumps flist->count, so use "end". */
1269 for (i = start; i <= end; i++)
1270 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1274 void send_extra_file_list(int f, int at_least)
1276 char fbuf[MAXPATHLEN];
1277 struct file_list *flist;
1279 int past_and_present, save_io_error = io_error;
1281 if (send_dir_ndx < 0)
1284 /* Keep sending data until we have the requested number of
1285 * files in the upcoming file-lists. */
1286 past_and_present = cur_flist->ndx_start - first_flist->ndx_start
1288 while (file_total - past_and_present < at_least) {
1289 start_write = stats.total_written;
1290 struct file_struct *file = dir_flist->files[send_dir_ndx];
1295 dlen = strlen(fbuf);
1297 if (F_ROOTDIR(file) != flist_dir) {
1298 if (!push_flist_dir(F_ROOTDIR(file), -1))
1299 exit_cleanup(RERR_FILESELECT);
1302 flist = flist_new(0, "send_extra_file_list");
1304 write_int(f, NDX_FLIST_OFFSET - send_dir_ndx);
1305 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1306 send_directory(f, flist, send_dir_ndx, fbuf, dlen, FLAG_DIVERT_DIRS | FLAG_XFER_DIR);
1309 clean_flist(flist, 0, 0);
1310 file_total += flist->count;
1311 stats.flist_size += stats.total_written - start_write;
1312 stats.num_files += flist->count;
1314 output_flist(flist);
1316 dp = F_DIRNODE_P(file);
1317 if (DIR_FIRST_CHILD(dp) >= 0) {
1318 send_dir_ndx = DIR_FIRST_CHILD(dp);
1321 while (DIR_NEXT_SIBLING(dp) < 0) {
1322 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1323 write_int(f, NDX_FLIST_EOF);
1325 change_local_filter_dir(NULL, 0, 0);
1329 file = dir_flist->files[send_dir_ndx];
1330 dp = F_DIRNODE_P(file);
1332 send_dir_ndx = DIR_NEXT_SIBLING(dp);
1337 if (io_error != save_io_error && !ignore_errors)
1338 send_msg_int(MSG_IO_ERROR, io_error);
1341 struct file_list *send_file_list(int f, int argc, char *argv[])
1346 char lastpath[MAXPATHLEN] = "";
1347 struct file_list *flist;
1348 struct timeval start_tv, end_tv;
1349 struct file_struct *file;
1352 int flags, disable_buffering;
1354 rprintf(FLOG, "building file list\n");
1355 if (show_filelist_p())
1356 start_filelist_progress("building file list");
1358 start_write = stats.total_written;
1359 gettimeofday(&start_tv, NULL);
1361 #ifdef SUPPORT_HARD_LINKS
1362 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
1366 flist = cur_flist = flist_new(0, "send_file_list");
1368 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
1369 flags = FLAG_DIVERT_DIRS;
1371 dir_flist = cur_flist;
1375 disable_buffering = io_start_buffering_out(f);
1376 if (filesfrom_fd >= 0) {
1377 if (argv[0] && !push_dir(argv[0], 0)) {
1378 rsyserr(FERROR, errno, "push_dir %s failed",
1379 full_fname(argv[0]));
1380 exit_cleanup(RERR_FILESELECT);
1386 char fbuf[MAXPATHLEN];
1391 if (read_filesfrom_line(filesfrom_fd, fbuf) == 0)
1393 sanitize_path(fbuf, fbuf, "", 0, NULL);
1397 strlcpy(fbuf, *argv++, MAXPATHLEN);
1399 sanitize_path(fbuf, fbuf, "", 0, NULL);
1403 if (relative_paths) {
1404 /* We clean up fbuf below. */
1406 } else if (!len || fbuf[len - 1] == '/') {
1407 if (len == 2 && fbuf[0] == '.') {
1408 /* Turn "./" into just "." rather than "./." */
1411 if (len + 1 >= MAXPATHLEN)
1412 overflow_exit("send_file_list");
1417 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
1418 && (len == 2 || fbuf[len-3] == '/')) {
1419 if (len + 2 >= MAXPATHLEN)
1420 overflow_exit("send_file_list");
1426 is_dot_dir = fbuf[len-1] == '.'
1427 && (len == 1 || fbuf[len-2] == '/');
1430 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1431 io_error |= IOERR_GENERAL;
1432 rsyserr(FERROR, errno, "link_stat %s failed",
1437 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
1438 rprintf(FINFO, "skipping directory %s\n", fbuf);
1444 if (!relative_paths) {
1445 p = strrchr(fbuf, '/');
1452 len -= p - fbuf + 1;
1457 if ((p = strstr(fbuf, "/./")) != NULL) {
1463 len -= p - fbuf + 3;
1467 /* Get rid of trailing "/" and "/.". */
1469 if (fn[len - 1] == '/') {
1471 if (!--len && !dir) {
1476 else if (len >= 2 && fn[len - 1] == '.'
1477 && fn[len - 2] == '/') {
1479 if (!(len -= 2) && !dir) {
1486 if (len == 1 && fn[0] == '/')
1489 /* Reject a ".." dir in the active part of the path. */
1490 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
1491 if ((p[2] == '/' || p[2] == '\0')
1492 && (p == fn || p[-1] == '/')) {
1494 "found \"..\" dir in relative path: %s\n",
1496 exit_cleanup(RERR_SYNTAX);
1507 static const char *lastdir;
1508 static int lastdir_len = -1;
1509 int len = strlen(dir);
1511 if (len != lastdir_len || memcmp(lastdir, dir, len) != 0) {
1512 if (!push_flist_dir(strdup(dir), len))
1514 lastdir = flist_dir;
1515 lastdir_len = flist_dir_len;
1516 } else if (!push_flist_dir(lastdir, lastdir_len)) {
1518 io_error |= IOERR_GENERAL;
1519 rsyserr(FERROR, errno, "push_dir %s failed",
1526 memmove(fbuf, fn, len + 1);
1528 if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
1529 /* Send the implied directories at the start of the
1530 * source spec, so we get their permissions right. */
1531 char *lp = lastpath, *slash = fbuf;
1533 /* Skip any initial directories in our path that we
1534 * have in common with lastpath. */
1535 for (fn = fbuf; *fn && *lp == *fn; lp++, fn++) {
1540 if (fn != p || (*lp && *lp != '/')) {
1541 int save_copy_links = copy_links;
1542 int save_xfer_dirs = xfer_dirs;
1543 int dir_flags = incremental ? FLAG_DIVERT_DIRS : 0;
1544 copy_links |= copy_unsafe_links;
1546 while ((slash = strchr(slash+1, '/')) != 0) {
1548 file = send_file_name(flist, fbuf, NULL, dir_flags, ALL_FILTERS);
1550 send_file_entry(file, f, flist->count - 1);
1553 copy_links = save_copy_links;
1554 xfer_dirs = save_xfer_dirs;
1556 strlcpy(lastpath, fbuf, sizeof lastpath);
1561 if (one_file_system)
1562 filesystem_dev = st.st_dev;
1564 if (recurse || (xfer_dirs && is_dot_dir)) {
1565 int top_flags = FLAG_TOP_DIR | FLAG_XFER_DIR
1566 | (is_dot_dir ? 0 : flags)
1567 | (incremental ? FLAG_DIVERT_DIRS : 0);
1568 file = send_file_name(flist, fbuf, &st, top_flags, ALL_FILTERS);
1570 send_file_entry(file, f, flist->count - 1);
1572 send_if_directory(f, flist, file, fbuf, len, flags);
1575 file = send_file_name(flist, fbuf, &st, flags, ALL_FILTERS);
1577 send_file_entry(file, f, flist->count - 1);
1581 gettimeofday(&end_tv, NULL);
1582 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1583 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1584 if (stats.flist_buildtime == 0)
1585 stats.flist_buildtime = 1;
1588 write_byte(f, 0); /* Indicate end of file list */
1590 #ifdef SUPPORT_HARD_LINKS
1591 if (preserve_hard_links && protocol_version >= 30 && !incremental)
1595 if (show_filelist_p())
1596 finish_filelist_progress(flist);
1598 gettimeofday(&end_tv, NULL);
1599 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1600 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1602 /* Sort the list without removing any duplicates in non-incremental
1603 * mode. This allows the receiving side to ask for whatever name it
1604 * kept. For incremental mode, the sender also removes duplicates
1605 * in this initial file-list so that it avoids re-sending duplicated
1607 clean_flist(flist, 0, incremental);
1608 file_total += flist->count;
1610 if (!numeric_ids && !incremental)
1613 /* send the io_error flag */
1614 if (protocol_version < 30)
1615 write_int(f, ignore_errors ? 0 : io_error);
1616 else if (io_error && !ignore_errors)
1617 send_msg_int(MSG_IO_ERROR, io_error);
1619 if (disable_buffering)
1620 io_end_buffering_out();
1622 stats.flist_size = stats.total_written - start_write;
1623 stats.num_files = flist->count;
1626 output_flist(flist);
1629 rprintf(FINFO, "send_file_list done\n");
1632 add_dirs_to_tree(-1, 0, dir_flist->count - 1);
1633 if (file_total == 1) {
1634 /* If we're creating incremental file-lists and there
1635 * was just 1 item in the first file-list, send 1 more
1636 * file-list to check if this is a 1-file xfer. */
1637 if (send_dir_ndx < 0)
1638 write_int(f, NDX_DONE);
1640 send_extra_file_list(f, 1);
1647 struct file_list *recv_file_list(int f)
1649 struct file_list *flist;
1653 if (f >= 0 && !incremental)
1654 rprintf(FLOG, "receiving file list\n");
1655 if (show_filelist_p())
1656 start_filelist_progress("receiving file list");
1658 start_read = stats.total_read;
1660 flist = flist_new(0, "recv_file_list");
1662 #ifdef SUPPORT_HARD_LINKS
1663 if (preserve_hard_links && protocol_version < 30)
1668 if (flist->ndx_start == 0)
1669 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
1670 dstart = dir_flist->count;
1676 while ((flags = read_byte(f)) != 0) {
1677 struct file_struct *file;
1679 flist_expand(flist);
1681 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
1682 flags |= read_byte(f) << 8;
1683 file = recv_file_entry(flist, flags, f);
1685 if (S_ISREG(file->mode) || S_ISLNK(file->mode))
1686 stats.total_size += F_LENGTH(file);
1688 if (incremental && S_ISDIR(file->mode)) {
1689 flist_expand(dir_flist);
1690 dir_flist->files[dir_flist->count++] = file;
1693 flist->files[flist->count++] = file;
1695 maybe_emit_filelist_progress(flist->count);
1698 rprintf(FINFO, "recv_file_name(%s)\n",
1699 f_name(file, NULL));
1702 file_total += flist->count;
1705 rprintf(FINFO, "received %d names\n", flist->count);
1707 if (show_filelist_p())
1708 finish_filelist_progress(flist);
1710 clean_flist(flist, relative_paths, 1);
1713 qsort(dir_flist->files + dstart, dir_flist->count - dstart,
1714 sizeof dir_flist->files[0], (int (*)())file_compare);
1716 recv_uid_list(f, flist);
1718 if (protocol_version < 30) {
1719 /* Recv the io_error flag */
1723 io_error |= read_int(f);
1727 output_flist(flist);
1731 for (i = 0; i < flist->count; i++)
1732 list_file_entry(flist->files[i]);
1736 rprintf(FINFO, "recv_file_list done\n");
1738 stats.flist_size += stats.total_read - start_read;
1739 stats.num_files += flist->count;
1744 /* This is only used once by the receiver if the very first file-list
1745 * has exactly one item in it. */
1746 void recv_additional_file_list(int f)
1748 struct file_list *flist;
1749 int ndx = read_int(f);
1750 if (ndx == NDX_DONE) {
1752 change_local_filter_dir(NULL, 0, 0);
1754 ndx = NDX_FLIST_OFFSET - ndx;
1755 if (ndx < 0 || ndx >= dir_flist->count) {
1756 ndx = NDX_FLIST_OFFSET - ndx;
1758 "Invalid dir index: %d (%d - %d)\n",
1759 ndx, NDX_FLIST_OFFSET,
1760 NDX_FLIST_OFFSET - dir_flist->count);
1761 exit_cleanup(RERR_PROTOCOL);
1763 flist = recv_file_list(f);
1764 flist->parent_ndx = ndx;
1768 /* Search for an identically-named item in the file list. Note that the
1769 * items must agree in their directory-ness, or no match is returned. */
1770 int flist_find(struct file_list *flist, struct file_struct *f)
1772 int low = flist->low, high = flist->high;
1773 int diff, mid, mid_up;
1775 while (low <= high) {
1776 mid = (low + high) / 2;
1777 if (F_IS_ACTIVE(flist->files[mid]))
1780 /* Scan for the next non-empty entry using the cached
1781 * distance values. If the value isn't fully up-to-
1782 * date, update it. */
1783 mid_up = mid + F_DEPTH(flist->files[mid]);
1784 if (!F_IS_ACTIVE(flist->files[mid_up])) {
1786 mid_up += F_DEPTH(flist->files[mid_up]);
1787 } while (!F_IS_ACTIVE(flist->files[mid_up]));
1788 F_DEPTH(flist->files[mid]) = mid_up - mid;
1790 if (mid_up > high) {
1791 /* If there's nothing left above us, set high to
1792 * a non-empty entry below us and continue. */
1793 high = mid - (int)flist->files[mid]->len32;
1794 if (!F_IS_ACTIVE(flist->files[high])) {
1796 high -= (int)flist->files[high]->len32;
1797 } while (!F_IS_ACTIVE(flist->files[high]));
1798 flist->files[mid]->len32 = mid - high;
1803 diff = f_name_cmp(flist->files[mid_up], f);
1805 if (protocol_version < 29
1806 && S_ISDIR(flist->files[mid_up]->mode)
1807 != S_ISDIR(f->mode))
1820 * Free up any resources a file_struct has allocated
1821 * and clear the file.
1823 void clear_file(struct file_struct *file)
1825 /* The +1 zeros out the first char of the basename. */
1826 memset(file, 0, FILE_STRUCT_LEN + 1);
1827 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
1828 * entry. Likewise for len32 in the opposite direction. We assume
1829 * that we're alone for now since flist_find() will adjust the counts
1830 * it runs into that aren't up-to-date. */
1831 file->len32 = F_DEPTH(file) = 1;
1834 /* Allocate a new file list. */
1835 struct file_list *flist_new(int flags, char *msg)
1837 struct file_list *flist;
1839 flist = new(struct file_list);
1843 memset(flist, 0, sizeof flist[0]);
1845 if (!(flags & FLIST_TEMP)) {
1847 flist->ndx_start = first_flist->prev->ndx_start
1848 + first_flist->prev->count;
1850 /* This is a doubly linked list with prev looping back to
1851 * the end of the list, but the last next pointer is NULL. */
1853 first_flist = cur_flist = flist->prev = flist;
1855 flist->prev = first_flist->prev;
1856 flist->prev->next = first_flist->prev = flist;
1861 if (!(flist->file_pool = pool_create(FILE_EXTENT, 0, out_of_memory, POOL_INTERN)))
1867 /* Free up all elements in a flist. */
1868 void flist_free(struct file_list *flist)
1871 ; /* Was FLIST_TEMP dir-list. */
1872 else if (flist == flist->prev) {
1873 first_flist = cur_flist = NULL;
1877 if (flist == cur_flist)
1878 cur_flist = flist->next;
1879 if (flist == first_flist)
1880 first_flist = first_flist->next;
1882 flist->prev->next = flist->next;
1884 flist->next = first_flist;
1886 flist->next->prev = flist->prev;
1887 file_total -= flist->count;
1891 pool_destroy(flist->file_pool);
1897 * This routine ensures we don't have any duplicate names in our file list.
1898 * duplicate names can cause corruption because of the pipelining
1900 static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
1902 char fbuf[MAXPATHLEN];
1907 if (flist->count == 0) {
1912 qsort(flist->files, flist->count,
1913 sizeof flist->files[0], (int (*)())file_compare);
1915 for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
1916 if (F_IS_ACTIVE(flist->files[i])) {
1921 flist->low = prev_i;
1922 while (++i < flist->count) {
1924 struct file_struct *file = flist->files[i];
1926 if (!F_IS_ACTIVE(file))
1928 if (f_name_cmp(file, flist->files[prev_i]) == 0)
1930 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
1931 int save_mode = file->mode;
1932 /* Make sure that this directory doesn't duplicate a
1933 * non-directory earlier in the list. */
1934 flist->high = prev_i;
1935 file->mode = S_IFREG;
1936 j = flist_find(flist, file);
1937 file->mode = save_mode;
1941 struct file_struct *fp = flist->files[j];
1943 /* If one is a dir and the other is not, we want to
1944 * keep the dir because it might have contents in the
1946 if (S_ISDIR(file->mode) != S_ISDIR(fp->mode)) {
1947 if (S_ISDIR(file->mode))
1951 } else if (protocol_version < 27)
1955 if (verbose > 1 && !am_server) {
1957 "removing duplicate name %s from file list (%d)\n",
1958 f_name(file, fbuf), drop);
1960 /* Make sure we don't lose track of a user-specified
1962 flist->files[keep]->flags |= flist->files[drop]->flags
1963 & (FLAG_TOP_DIR|FLAG_XFER_DIR);
1965 clear_file(flist->files[drop]);
1968 if (flist->low == drop) {
1970 j < i && !F_IS_ACTIVE(flist->files[j]);
1979 flist->high = no_dups ? prev_i : flist->count - 1;
1982 /* We need to strip off the leading slashes for relative
1983 * paths, but this must be done _after_ the sorting phase. */
1984 for (i = flist->low; i <= flist->high; i++) {
1985 struct file_struct *file = flist->files[i];
1989 while (*file->dirname == '/')
1991 if (!*file->dirname)
1992 file->dirname = NULL;
1996 if (prune_empty_dirs && no_dups) {
1997 int j, prev_depth = 0;
1999 prev_i = 0; /* It's OK that this isn't really true. */
2001 for (i = flist->low; i <= flist->high; i++) {
2002 struct file_struct *fp, *file = flist->files[i];
2004 /* This temporarily abuses the F_DEPTH() value for a
2005 * directory that is in a chain that might get pruned.
2006 * We restore the old value if it gets a reprieve. */
2007 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2008 /* Dump empty dirs when coming back down. */
2009 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2010 fp = flist->files[prev_i];
2011 if (F_DEPTH(fp) >= 0)
2013 prev_i = -F_DEPTH(fp)-1;
2016 prev_depth = F_DEPTH(file);
2017 if (is_excluded(f_name(file, fbuf), 1,
2019 /* Keep dirs through this dir. */
2020 for (j = prev_depth-1; ; j--) {
2021 fp = flist->files[prev_i];
2022 if (F_DEPTH(fp) >= 0)
2024 prev_i = -F_DEPTH(fp)-1;
2028 F_DEPTH(file) = -prev_i-1;
2031 /* Keep dirs through this non-dir. */
2032 for (j = prev_depth; ; j--) {
2033 fp = flist->files[prev_i];
2034 if (F_DEPTH(fp) >= 0)
2036 prev_i = -F_DEPTH(fp)-1;
2041 /* Dump empty all remaining empty dirs. */
2043 struct file_struct *fp = flist->files[prev_i];
2044 if (F_DEPTH(fp) >= 0)
2046 prev_i = -F_DEPTH(fp)-1;
2050 for (i = flist->low; i <= flist->high; i++) {
2051 if (F_IS_ACTIVE(flist->files[i]))
2055 for (i = flist->high; i >= flist->low; i--) {
2056 if (F_IS_ACTIVE(flist->files[i]))
2063 static void output_flist(struct file_list *flist)
2065 char uidbuf[16], gidbuf[16], depthbuf[16];
2066 struct file_struct *file;
2067 const char *root, *dir, *slash, *name, *trail;
2068 const char *who = who_am_i();
2071 rprintf(FINFO, "[%s] flist start=%d, count=%d, low=%d, high=%d\n",
2072 who, flist->ndx_start, flist->count, flist->low, flist->high);
2073 for (i = 0; i < flist->count; i++) {
2074 file = flist->files[i];
2075 if ((am_root || am_sender) && preserve_uid) {
2076 snprintf(uidbuf, sizeof uidbuf, " uid=%ld",
2080 if (preserve_gid && F_GID(file) != GID_NONE) {
2081 snprintf(gidbuf, sizeof gidbuf, " gid=%ld",
2086 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2087 if (F_IS_ACTIVE(file)) {
2088 root = am_sender ? NS(F_ROOTDIR(file)) : depthbuf;
2089 if ((dir = file->dirname) == NULL)
2093 name = file->basename;
2094 trail = S_ISDIR(file->mode) ? "/" : "";
2096 root = dir = slash = name = trail = "";
2097 rprintf(FINFO, "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2098 who, i, root, dir, slash, name, trail, (int)file->mode,
2099 (double)F_LENGTH(file), uidbuf, gidbuf, file->flags);
2103 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2104 enum fnc_type { t_PATH, t_ITEM };
2106 /* Compare the names of two file_struct entities, similar to how strcmp()
2107 * would do if it were operating on the joined strings.
2109 * Some differences beginning with protocol_version 29: (1) directory names
2110 * are compared with an assumed trailing slash so that they compare in a
2111 * way that would cause them to sort immediately prior to any content they
2112 * may have; (2) a directory of any name compares after a non-directory of
2113 * any name at the same depth; (3) a directory with name "." compares prior
2114 * to anything else. These changes mean that a directory and a non-dir
2115 * with the same name will not compare as equal (protocol_version >= 29).
2117 * The dirname component can be an empty string, but the basename component
2118 * cannot (and never is in the current codebase). The basename component
2119 * may be NULL (for a removed item), in which case it is considered to be
2120 * after any existing item. */
2121 int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
2124 const uchar *c1, *c2;
2125 enum fnc_state state1, state2;
2126 enum fnc_type type1, type2;
2127 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2129 if (!f1 || !F_IS_ACTIVE(f1)) {
2130 if (!f2 || !F_IS_ACTIVE(f2))
2134 if (!f2 || !F_IS_ACTIVE(f2))
2137 c1 = (uchar*)f1->dirname;
2138 c2 = (uchar*)f2->dirname;
2142 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2143 c1 = (const uchar*)f1->basename;
2144 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2146 state1 = s_TRAILING;
2155 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2156 c2 = (const uchar*)f2->basename;
2157 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2159 state2 = s_TRAILING;
2169 return type1 == t_PATH ? 1 : -1;
2179 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2180 c1 = (const uchar*)f1->basename;
2181 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2183 state1 = s_TRAILING;
2189 state1 = s_TRAILING;
2190 if (type1 == t_PATH) {
2199 if (*c2 && type1 != type2)
2200 return type1 == t_PATH ? 1 : -1;
2209 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2210 c2 = (const uchar*)f2->basename;
2211 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2213 state2 = s_TRAILING;
2219 state2 = s_TRAILING;
2220 if (type2 == t_PATH) {
2232 return type1 == t_PATH ? 1 : -1;
2234 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2239 char *f_name_buf(void)
2241 static char names[5][MAXPATHLEN];
2242 static unsigned int n;
2244 n = (n + 1) % (sizeof names / sizeof names[0]);
2249 /* Return a copy of the full filename of a flist entry, using the indicated
2250 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
2251 * done because we checked the size when creating the file_struct entry.
2253 char *f_name(struct file_struct *f, char *fbuf)
2255 if (!f || !F_IS_ACTIVE(f))
2259 fbuf = f_name_buf();
2262 int len = strlen(f->dirname);
2263 memcpy(fbuf, f->dirname, len);
2265 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
2267 strlcpy(fbuf, f->basename, MAXPATHLEN);
2272 /* Do a non-recursive scan of the named directory, possibly ignoring all
2273 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
2274 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
2275 * buffer (the functions we call will append names onto the end, but the old
2276 * dir value will be restored on exit). */
2277 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
2279 struct file_list *dirlist;
2280 char dirbuf[MAXPATHLEN];
2281 int save_recurse = recurse;
2282 int save_xfer_dirs = xfer_dirs;
2285 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
2286 if (dlen >= MAXPATHLEN)
2291 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
2295 send_directory(ignore_filter_rules ? -2 : -1, dirlist, -1, dirname, dlen, 0);
2296 xfer_dirs = save_xfer_dirs;
2297 recurse = save_recurse;
2299 flist_count_offset += dirlist->count;
2301 clean_flist(dirlist, 0, 0);
2304 output_flist(dirlist);