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, 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 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 inc_recurse;
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 && !inc_recurse;
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(int f, struct file_struct *file, 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 (inc_recurse && 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 (inc_recurse && 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)(long)np->data - 1;
422 if (first_hlink_ndx < 0) {
423 np->data = (void*)(long)(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);
552 if (S_ISREG(mode) || S_ISLNK(mode))
553 stats.total_size += F_LENGTH(file);
556 static struct file_struct *recv_file_entry(struct file_list *flist,
559 static time_t modtime;
563 static uint32 rdev_major;
566 static char lastname[MAXPATHLEN], *lastdir;
567 static int lastdir_depth, lastdir_len = -1;
568 static unsigned int del_hier_name_len = 0;
569 static int in_del_hier = 0;
570 char thisname[MAXPATHLEN];
571 unsigned int l1 = 0, l2 = 0;
572 int alloc_len, basename_len, linkname_len;
573 int extra_len = file_extra_cnt * EXTRA_LEN;
574 int first_hlink_ndx = -1;
576 const char *basename;
578 struct file_struct *file;
580 if (flags & XMIT_SAME_NAME)
583 if (flags & XMIT_LONG_NAME)
588 if (l2 >= MAXPATHLEN - l1) {
590 "overflow: flags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
591 flags, l1, l2, lastname, who_am_i());
592 overflow_exit("recv_file_entry");
595 strlcpy(thisname, lastname, l1 + 1);
596 read_sbuf(f, &thisname[l1], l2);
597 thisname[l1 + l2] = 0;
599 strlcpy(lastname, thisname, MAXPATHLEN);
601 clean_fname(thisname, 0);
604 sanitize_path(thisname, thisname, "", 0, NULL);
606 if ((basename = strrchr(thisname, '/')) != NULL) {
607 int len = basename++ - thisname;
608 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
609 lastdir = new_array(char, len + 1);
610 memcpy(lastdir, thisname, len);
613 lastdir_depth = count_dir_elements(lastdir);
617 basename_len = strlen(basename) + 1; /* count the '\0' */
619 #ifdef SUPPORT_HARD_LINKS
620 if (protocol_version >= 30
621 && BITS_SETnUNSET(flags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
622 struct file_struct *first;
623 first_hlink_ndx = read_int(f);
624 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->count) {
626 "hard-link reference out of range: %d (%d)\n",
627 first_hlink_ndx, flist->count);
628 exit_cleanup(RERR_PROTOCOL);
630 first = flist->files[first_hlink_ndx];
631 file_length = F_LENGTH(first);
632 modtime = first->modtime;
638 if ((preserve_devices && IS_DEVICE(mode))
639 || (preserve_specials && IS_SPECIAL(mode))) {
640 uint32 *devp = F_RDEV_P(first);
641 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
643 if (preserve_links && S_ISLNK(mode))
644 linkname_len = strlen(F_SYMLINK(first)) + 1;
651 file_length = read_longint(f);
652 if (!(flags & XMIT_SAME_TIME))
653 modtime = (time_t)read_int(f);
654 if (!(flags & XMIT_SAME_MODE))
655 mode = from_wire_mode(read_int(f));
657 if (chmod_modes && !S_ISLNK(mode))
658 mode = tweak_mode(mode, chmod_modes);
660 if (preserve_uid && !(flags & XMIT_SAME_UID)) {
661 uid = (uid_t)read_int(f);
662 if (flags & XMIT_USER_NAME_FOLLOWS)
663 uid = recv_user_name(f, uid);
664 else if (inc_recurse && am_root && !numeric_ids)
665 uid = match_uid(uid);
667 if (preserve_gid && !(flags & XMIT_SAME_GID)) {
668 gid = (gid_t)read_int(f);
669 if (flags & XMIT_GROUP_NAME_FOLLOWS)
670 gid = recv_group_name(f, gid);
671 else if (inc_recurse && (!am_root || !numeric_ids))
672 gid = match_gid(gid);
675 if ((preserve_devices && IS_DEVICE(mode))
676 || (preserve_specials && IS_SPECIAL(mode))) {
677 if (protocol_version < 28) {
678 if (!(flags & XMIT_SAME_RDEV_pre28))
679 rdev = (dev_t)read_int(f);
682 if (!(flags & XMIT_SAME_RDEV_MAJOR))
683 rdev_major = read_int(f);
684 if (flags & XMIT_RDEV_MINOR_IS_SMALL)
685 rdev_minor = read_byte(f);
687 rdev_minor = read_int(f);
688 rdev = MAKEDEV(rdev_major, rdev_minor);
690 extra_len += 2 * EXTRA_LEN;
692 } else if (protocol_version < 28)
693 rdev = MAKEDEV(0, 0);
696 if (preserve_links && S_ISLNK(mode)) {
697 linkname_len = read_int(f) + 1; /* count the '\0' */
698 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
699 rprintf(FERROR, "overflow: linkname_len=%d\n",
701 overflow_exit("recv_file_entry");
708 #ifdef SUPPORT_HARD_LINKS
710 if (preserve_hard_links) {
711 if (protocol_version < 28 && S_ISREG(mode))
712 flags |= XMIT_HLINKED;
713 if (flags & XMIT_HLINKED)
714 extra_len += EXTRA_LEN;
718 if (always_checksum && S_ISREG(mode))
719 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
721 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
722 extra_len += EXTRA_LEN;
724 #if EXTRA_ROUNDING > 0
725 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
726 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
729 if (inc_recurse && S_ISDIR(mode)) {
730 if (one_file_system) {
731 /* Room to save the dir's device for -x */
732 extra_len += 2 * EXTRA_LEN;
737 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
739 bp = pool_alloc(flist->file_pool, alloc_len, "recv_file_entry");
741 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
743 file = (struct file_struct *)bp;
744 bp += FILE_STRUCT_LEN;
746 memcpy(bp, basename, basename_len);
747 bp += basename_len + linkname_len; /* skip space for symlink too */
749 #ifdef SUPPORT_HARD_LINKS
750 if (flags & XMIT_HLINKED)
751 file->flags |= FLAG_HLINKED;
753 file->modtime = modtime;
754 file->len32 = (uint32)file_length;
755 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
756 file->flags |= FLAG_LENGTH64;
757 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
765 if (basename != thisname) {
766 file->dirname = lastdir;
767 F_DEPTH(file) = lastdir_depth + 1;
772 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
774 if (flags & XMIT_TOP_DIR) {
775 in_del_hier = recurse;
776 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
777 if (relative_paths && del_hier_name_len > 2
778 && lastname[del_hier_name_len-1] == '.'
779 && lastname[del_hier_name_len-2] == '/')
780 del_hier_name_len -= 2;
781 file->flags |= FLAG_TOP_DIR | FLAG_XFER_DIR;
782 } else if (in_del_hier) {
783 if (!relative_paths || !del_hier_name_len
784 || (l1 >= del_hier_name_len
785 && lastname[del_hier_name_len] == '/'))
786 file->flags |= FLAG_XFER_DIR;
792 if ((preserve_devices && IS_DEVICE(mode))
793 || (preserve_specials && IS_SPECIAL(mode))) {
794 uint32 *devp = F_RDEV_P(file);
795 DEV_MAJOR(devp) = major(rdev);
796 DEV_MINOR(devp) = minor(rdev);
801 bp = (char*)file->basename + basename_len;
802 if (first_hlink_ndx >= 0) {
803 struct file_struct *first = flist->files[first_hlink_ndx];
804 memcpy(bp, F_SYMLINK(first), linkname_len);
806 read_sbuf(f, bp, linkname_len - 1);
808 sanitize_path(bp, bp, "", lastdir_depth, NULL);
812 #ifdef SUPPORT_HARD_LINKS
813 if (preserve_hard_links && flags & XMIT_HLINKED) {
814 if (protocol_version >= 30) {
815 F_HL_GNUM(file) = flags & XMIT_HLINK_FIRST
816 ? flist->count : first_hlink_ndx;
818 static int32 cnt = 0;
819 struct idev_node *np;
822 if (protocol_version < 26) {
826 if (!(flags & XMIT_SAME_DEV_pre30))
827 dev = read_longint(f);
828 ino = read_longint(f);
830 np = idev_node(dev, ino);
831 ndx = (int32)(long)np->data - 1;
834 np->data = (void*)(long)cnt;
836 F_HL_GNUM(file) = ndx;
841 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
843 bp = (char*)F_SUM(file);
845 /* Prior to 28, we get a useless set of nulls. */
848 if (first_hlink_ndx >= 0) {
849 struct file_struct *first = flist->files[first_hlink_ndx];
850 memcpy(bp, F_SUM(first), checksum_len);
852 read_buf(f, bp, checksum_len);
855 if (S_ISREG(mode) || S_ISLNK(mode))
856 stats.total_size += file_length;
862 * Create a file_struct for a named file by reading its stat()
863 * information and performing extensive checks against global
866 * @return the new file, or NULL if there was an error or this file
867 * should be excluded.
869 * @todo There is a small optimization opportunity here to avoid
870 * stat()ing the file in some circumstances, which has a certain cost.
871 * We are called immediately after doing readdir(), and so we may
872 * already know the d_type of the file. We could for example avoid
873 * statting directories if we're not recursing, but this is not a very
874 * important case. Some systems may not have d_type.
876 struct file_struct *make_file(const char *fname, struct file_list *flist,
877 STRUCT_STAT *stp, int flags, int filter_level)
879 static char *lastdir;
880 static int lastdir_len = -1;
881 struct file_struct *file;
883 char thisname[MAXPATHLEN];
884 char linkname[MAXPATHLEN];
885 int alloc_len, basename_len, linkname_len;
886 int extra_len = file_extra_cnt * EXTRA_LEN;
887 const char *basename;
890 if (strlcpy(thisname, fname, sizeof thisname)
891 >= sizeof thisname - flist_dir_len) {
892 rprintf(FINFO, "skipping overly long name: %s\n", fname);
895 clean_fname(thisname, 0);
897 sanitize_path(thisname, thisname, "", 0, NULL);
899 if (stp && S_ISDIR(stp->st_mode)) {
900 st = *stp; /* Needed for "symlink/." with --relative. */
901 *linkname = '\0'; /* make IBM code checker happy */
902 } else if (readlink_stat(thisname, &st, linkname) != 0) {
903 int save_errno = errno;
904 /* See if file is excluded before reporting an error. */
905 if (filter_level != NO_FILTERS
906 && (is_excluded(thisname, 0, filter_level)
907 || is_excluded(thisname, 1, filter_level))) {
908 if (ignore_perishable && save_errno != ENOENT)
909 non_perishable_cnt++;
912 if (save_errno == ENOENT) {
914 /* Avoid "vanished" error if symlink points nowhere. */
915 if (copy_links && do_lstat(thisname, &st) == 0
916 && S_ISLNK(st.st_mode)) {
917 io_error |= IOERR_GENERAL;
918 rprintf(FERROR, "symlink has no referent: %s\n",
919 full_fname(thisname));
923 enum logcode c = am_daemon && protocol_version < 28
925 io_error |= IOERR_VANISHED;
926 rprintf(c, "file has vanished: %s\n",
927 full_fname(thisname));
930 io_error |= IOERR_GENERAL;
931 rsyserr(FERROR, save_errno, "readlink %s failed",
932 full_fname(thisname));
937 /* backup.c calls us with filter_level set to NO_FILTERS. */
938 if (filter_level == NO_FILTERS)
941 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
942 rprintf(FINFO, "skipping directory %s\n", thisname);
946 /* -x only affects directories because we need to avoid recursing
947 * into a mount-point directory, not to avoid copying a symlinked
948 * file if -L (or similar) was specified. */
949 if (one_file_system && st.st_dev != filesystem_dev
950 && S_ISDIR(st.st_mode)) {
951 if (one_file_system > 1) {
953 rprintf(FINFO, "skipping mount-point dir %s\n",
958 flags |= FLAG_MOUNT_DIR;
961 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
962 if (ignore_perishable)
963 non_perishable_cnt++;
967 if (lp_ignore_nonreadable(module_id)) {
969 if (!S_ISLNK(st.st_mode))
971 if (access(thisname, R_OK) != 0)
977 /* Only divert a directory in the main transfer. */
978 if (flist && flist->prev && S_ISDIR(st.st_mode)
979 && flags & FLAG_DIVERT_DIRS) {
981 /* Room for parent/sibling/next-child info. */
982 extra_len += 3 * EXTRA_LEN;
986 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
987 who_am_i(), thisname, filter_level);
990 if ((basename = strrchr(thisname, '/')) != NULL) {
991 int len = basename++ - thisname;
992 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
993 lastdir = new_array(char, len + 1);
994 memcpy(lastdir, thisname, len);
1000 basename_len = strlen(basename) + 1; /* count the '\0' */
1002 #ifdef SUPPORT_LINKS
1003 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1008 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1009 extra_len += EXTRA_LEN;
1011 #if EXTRA_ROUNDING > 0
1012 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1013 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1016 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1019 bp = pool_alloc(flist->file_pool, alloc_len, "make_file");
1021 if (!(bp = new_array(char, alloc_len)))
1022 out_of_memory("make_file");
1025 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1027 file = (struct file_struct *)bp;
1028 bp += FILE_STRUCT_LEN;
1030 memcpy(bp, basename, basename_len);
1031 bp += basename_len + linkname_len; /* skip space for symlink too */
1033 #ifdef SUPPORT_HARD_LINKS
1034 if (preserve_hard_links && flist && flist->prev) {
1035 if (protocol_version >= 28
1036 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1037 : S_ISREG(st.st_mode)) {
1038 tmp_dev = st.st_dev;
1039 tmp_ino = st.st_ino;
1045 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1046 if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1047 tmp_rdev = st.st_rdev;
1052 file->flags = flags;
1053 file->modtime = st.st_mtime;
1054 file->len32 = (uint32)st.st_size;
1055 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1056 file->flags |= FLAG_LENGTH64;
1057 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1059 file->mode = st.st_mode;
1061 F_OWNER(file) = st.st_uid;
1063 F_GROUP(file) = st.st_gid;
1065 if (basename != thisname)
1066 file->dirname = lastdir;
1068 #ifdef SUPPORT_LINKS
1070 bp = (char*)file->basename + basename_len;
1071 memcpy(bp, linkname, linkname_len);
1075 if (always_checksum && am_sender && S_ISREG(st.st_mode))
1076 file_checksum(thisname, tmp_sum, st.st_size);
1078 F_ROOTDIR(file) = flist_dir;
1080 /* This code is only used by the receiver when it is building
1081 * a list of files for a delete pass. */
1082 if (keep_dirlinks && linkname_len && flist) {
1084 int save_mode = file->mode;
1085 file->mode = S_IFDIR; /* Find a directory with our name. */
1086 if (flist_find(dir_flist, file) >= 0
1087 && do_stat(thisname, &st2) == 0 && S_ISDIR(st2.st_mode)) {
1088 file->modtime = st2.st_mtime;
1090 file->mode = st2.st_mode;
1092 F_OWNER(file) = st2.st_uid;
1094 F_GROUP(file) = st2.st_gid;
1096 file->mode = save_mode;
1099 if (basename_len == 0+1)
1102 if (inc_recurse && flist == dir_flist) {
1103 flist_expand(flist);
1104 flist->files[flist->count++] = file;
1110 /* Only called for temporary file_struct entries created by make_file(). */
1111 void unmake_file(struct file_struct *file)
1113 int extra_cnt = file_extra_cnt + LEN64_BUMP(file);
1114 #if EXTRA_ROUNDING > 0
1115 if (extra_cnt & EXTRA_ROUNDING)
1116 extra_cnt = (extra_cnt | EXTRA_ROUNDING) + 1;
1118 free(REQ_EXTRA(file, extra_cnt));
1121 static struct file_struct *send_file_name(int f, struct file_list *flist,
1122 char *fname, STRUCT_STAT *stp,
1123 int flags, int filter_flags)
1125 struct file_struct *file;
1127 file = make_file(fname, flist, stp, flags, filter_flags);
1131 if (chmod_modes && !S_ISLNK(file->mode))
1132 file->mode = tweak_mode(file->mode, chmod_modes);
1134 maybe_emit_filelist_progress(flist->count + flist_count_offset);
1136 flist_expand(flist);
1137 flist->files[flist->count++] = file;
1139 send_file_entry(f, file, flist->count - 1);
1143 static void send_if_directory(int f, struct file_list *flist,
1144 struct file_struct *file,
1145 char *fbuf, unsigned int ol,
1148 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1150 if (S_ISDIR(file->mode)
1151 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1153 unsigned int len = strlen(fbuf);
1154 if (len > 1 && fbuf[len-1] == '/')
1156 if (len >= MAXPATHLEN - 1) {
1157 io_error |= IOERR_GENERAL;
1158 rprintf(FERROR, "skipping long-named directory: %s\n",
1162 save_filters = push_local_filters(fbuf, len);
1163 send_directory(f, flist, -1, fbuf, len, flags);
1164 pop_local_filters(save_filters);
1171 static int file_compare(struct file_struct **file1, struct file_struct **file2)
1173 return f_name_cmp(*file1, *file2);
1176 /* We take an entire set of sibling dirs from dir_flist (start <= ndx <= end),
1177 * sort them by name, and link them into the tree, setting the appropriate
1178 * parent/child/sibling pointers. */
1179 static void add_dirs_to_tree(int parent_ndx, int start, int end)
1183 int32 *parent_dp = parent_ndx < 0 ? NULL
1184 : F_DIRNODE_P(dir_flist->files[parent_ndx]);
1186 qsort(dir_flist->files + start, end - start + 1,
1187 sizeof dir_flist->files[0], (int (*)())file_compare);
1189 for (i = start; i <= end; i++) {
1190 struct file_struct *file = dir_flist->files[i];
1191 if (!(file->flags & FLAG_XFER_DIR)
1192 || file->flags & FLAG_MOUNT_DIR)
1195 DIR_NEXT_SIBLING(dp) = i;
1197 DIR_FIRST_CHILD(parent_dp) = i;
1200 dp = F_DIRNODE_P(file);
1201 DIR_PARENT(dp) = parent_ndx;
1202 DIR_FIRST_CHILD(dp) = -1;
1205 DIR_NEXT_SIBLING(dp) = -1;
1208 /* This function is normally called by the sender, but the receiving side also
1209 * calls it from get_dirlist() with f set to -1 so that we just construct the
1210 * file list in memory without sending it over the wire. Also, get_dirlist()
1211 * might call this with f set to -2, which also indicates that local filter
1212 * rules should be ignored. */
1213 static void send_directory(int f, struct file_list *flist, int parent_ndx,
1214 char *fbuf, int len, int flags)
1220 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1221 int start = divert_dirs ? dir_flist->count : flist->count;
1222 int filter_flags = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1224 assert(flist != NULL);
1226 if (!(d = opendir(fbuf))) {
1227 io_error |= IOERR_GENERAL;
1228 rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
1233 if (len != 1 || *fbuf != '/')
1236 remainder = MAXPATHLEN - (p - fbuf);
1238 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1239 char *dname = d_name(di);
1240 if (dname[0] == '.' && (dname[1] == '\0'
1241 || (dname[1] == '.' && dname[2] == '\0')))
1243 if (strlcpy(p, dname, remainder) >= remainder) {
1244 io_error |= IOERR_GENERAL;
1246 "cannot send long-named file %s\n",
1251 send_file_name(f, flist, fbuf, NULL, flags, filter_flags);
1257 io_error |= IOERR_GENERAL;
1258 rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
1267 add_dirs_to_tree(parent_ndx, start, dir_flist->count - 1);
1269 int i, end = flist->count - 1;
1270 /* send_if_directory() bumps flist->count, so use "end". */
1271 for (i = start; i <= end; i++)
1272 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1276 void send_extra_file_list(int f, int at_least)
1278 char fbuf[MAXPATHLEN];
1279 struct file_list *flist;
1281 int future_cnt, save_io_error = io_error;
1283 if (send_dir_ndx < 0)
1286 /* Keep sending data until we have the requested number of
1287 * files in the upcoming file-lists. */
1288 if (cur_flist->next) {
1289 flist = first_flist->prev; /* the newest flist */
1290 future_cnt = flist->count
1291 + flist->ndx_start - cur_flist->next->ndx_start;
1294 while (future_cnt < at_least) {
1295 struct file_struct *file = dir_flist->files[send_dir_ndx];
1300 dlen = strlen(fbuf);
1302 if (F_ROOTDIR(file) != flist_dir) {
1303 if (!push_flist_dir(F_ROOTDIR(file), -1))
1304 exit_cleanup(RERR_FILESELECT);
1307 flist = flist_new(0, "send_extra_file_list");
1308 start_write = stats.total_written;
1310 write_ndx(f, NDX_FLIST_OFFSET - send_dir_ndx);
1311 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1312 send_directory(f, flist, send_dir_ndx, fbuf, dlen, FLAG_DIVERT_DIRS | FLAG_XFER_DIR);
1315 clean_flist(flist, 0, 0);
1316 file_total += flist->count;
1317 future_cnt += flist->count;
1318 stats.flist_size += stats.total_written - start_write;
1319 stats.num_files += flist->count;
1321 output_flist(flist);
1323 dp = F_DIRNODE_P(file);
1324 if (DIR_FIRST_CHILD(dp) >= 0) {
1325 send_dir_ndx = DIR_FIRST_CHILD(dp);
1328 while (DIR_NEXT_SIBLING(dp) < 0) {
1329 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1330 write_ndx(f, NDX_FLIST_EOF);
1332 change_local_filter_dir(NULL, 0, 0);
1336 file = dir_flist->files[send_dir_ndx];
1337 dp = F_DIRNODE_P(file);
1339 send_dir_ndx = DIR_NEXT_SIBLING(dp);
1344 if (io_error != save_io_error && !ignore_errors)
1345 send_msg_int(MSG_IO_ERROR, io_error);
1348 struct file_list *send_file_list(int f, int argc, char *argv[])
1353 char lastpath[MAXPATHLEN] = "";
1354 struct file_list *flist;
1355 struct timeval start_tv, end_tv;
1358 int flags, disable_buffering;
1360 rprintf(FLOG, "building file list\n");
1361 if (show_filelist_p())
1362 start_filelist_progress("building file list");
1363 else if (inc_recurse && verbose && !am_server)
1364 rprintf(FCLIENT, "sending incremental file list\n");
1366 start_write = stats.total_written;
1367 gettimeofday(&start_tv, NULL);
1369 #ifdef SUPPORT_HARD_LINKS
1370 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
1374 flist = cur_flist = flist_new(0, "send_file_list");
1376 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
1377 flags = FLAG_DIVERT_DIRS;
1379 dir_flist = cur_flist;
1383 disable_buffering = io_start_buffering_out(f);
1384 if (filesfrom_fd >= 0) {
1385 if (argv[0] && !push_dir(argv[0], 0)) {
1386 rsyserr(FERROR, errno, "push_dir %s failed",
1387 full_fname(argv[0]));
1388 exit_cleanup(RERR_FILESELECT);
1394 char fbuf[MAXPATHLEN];
1399 if (read_filesfrom_line(filesfrom_fd, fbuf) == 0)
1401 sanitize_path(fbuf, fbuf, "", 0, NULL);
1405 strlcpy(fbuf, *argv++, MAXPATHLEN);
1407 sanitize_path(fbuf, fbuf, "", 0, NULL);
1411 if (relative_paths) {
1412 /* We clean up fbuf below. */
1414 } else if (!len || fbuf[len - 1] == '/') {
1415 if (len == 2 && fbuf[0] == '.') {
1416 /* Turn "./" into just "." rather than "./." */
1419 if (len + 1 >= MAXPATHLEN)
1420 overflow_exit("send_file_list");
1425 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
1426 && (len == 2 || fbuf[len-3] == '/')) {
1427 if (len + 2 >= MAXPATHLEN)
1428 overflow_exit("send_file_list");
1434 is_dot_dir = fbuf[len-1] == '.'
1435 && (len == 1 || fbuf[len-2] == '/');
1438 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1439 io_error |= IOERR_GENERAL;
1440 rsyserr(FERROR, errno, "link_stat %s failed",
1445 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
1446 rprintf(FINFO, "skipping directory %s\n", fbuf);
1452 if (!relative_paths) {
1453 p = strrchr(fbuf, '/');
1460 len -= p - fbuf + 1;
1465 if ((p = strstr(fbuf, "/./")) != NULL) {
1471 len -= p - fbuf + 3;
1475 /* Get rid of trailing "/" and "/.". */
1477 if (fn[len - 1] == '/') {
1479 if (!--len && !dir) {
1484 else if (len >= 2 && fn[len - 1] == '.'
1485 && fn[len - 2] == '/') {
1487 if (!(len -= 2) && !dir) {
1494 if (len == 1 && fn[0] == '/')
1497 /* Reject a ".." dir in the active part of the path. */
1498 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
1499 if ((p[2] == '/' || p[2] == '\0')
1500 && (p == fn || p[-1] == '/')) {
1502 "found \"..\" dir in relative path: %s\n",
1504 exit_cleanup(RERR_SYNTAX);
1515 static const char *lastdir;
1516 static int lastdir_len = -1;
1517 int len = strlen(dir);
1519 if (len != lastdir_len || memcmp(lastdir, dir, len) != 0) {
1520 if (!push_flist_dir(strdup(dir), len))
1522 lastdir = flist_dir;
1523 lastdir_len = flist_dir_len;
1524 } else if (!push_flist_dir(lastdir, lastdir_len)) {
1526 io_error |= IOERR_GENERAL;
1527 rsyserr(FERROR, errno, "push_dir %s failed",
1534 memmove(fbuf, fn, len + 1);
1536 if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
1537 /* Send the implied directories at the start of the
1538 * source spec, so we get their permissions right. */
1539 char *lp = lastpath, *slash = fbuf;
1541 /* Skip any initial directories in our path that we
1542 * have in common with lastpath. */
1543 for (fn = fbuf; *fn && *lp == *fn; lp++, fn++) {
1548 if (fn != p || (*lp && *lp != '/')) {
1549 int save_copy_links = copy_links;
1550 int save_xfer_dirs = xfer_dirs;
1551 int dir_flags = inc_recurse ? FLAG_DIVERT_DIRS : 0;
1552 copy_links |= copy_unsafe_links;
1554 while ((slash = strchr(slash+1, '/')) != 0) {
1556 send_file_name(f, flist, fbuf, NULL,
1557 dir_flags, ALL_FILTERS);
1560 copy_links = save_copy_links;
1561 xfer_dirs = save_xfer_dirs;
1563 strlcpy(lastpath, fbuf, sizeof lastpath);
1568 if (one_file_system)
1569 filesystem_dev = st.st_dev;
1571 if (recurse || (xfer_dirs && is_dot_dir)) {
1572 struct file_struct *file;
1573 int top_flags = FLAG_TOP_DIR | FLAG_XFER_DIR
1574 | (is_dot_dir ? 0 : flags)
1575 | (inc_recurse ? FLAG_DIVERT_DIRS : 0);
1576 file = send_file_name(f, flist, fbuf, &st,
1577 top_flags, ALL_FILTERS);
1578 if (file && !inc_recurse)
1579 send_if_directory(f, flist, file, fbuf, len, flags);
1581 send_file_name(f, flist, fbuf, &st, flags, ALL_FILTERS);
1584 gettimeofday(&end_tv, NULL);
1585 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1586 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1587 if (stats.flist_buildtime == 0)
1588 stats.flist_buildtime = 1;
1591 write_byte(f, 0); /* Indicate end of file list */
1593 #ifdef SUPPORT_HARD_LINKS
1594 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
1598 if (show_filelist_p())
1599 finish_filelist_progress(flist);
1601 gettimeofday(&end_tv, NULL);
1602 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1603 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1605 /* Sort the list without removing any duplicates in non-incremental
1606 * mode. This allows the receiving side to ask for whatever name it
1607 * kept. For incremental mode, the sender also removes duplicates
1608 * in this initial file-list so that it avoids re-sending duplicated
1610 clean_flist(flist, 0, inc_recurse);
1611 file_total += flist->count;
1613 if (!numeric_ids && !inc_recurse)
1616 /* send the io_error flag */
1617 if (protocol_version < 30)
1618 write_int(f, ignore_errors ? 0 : io_error);
1619 else if (io_error && !ignore_errors)
1620 send_msg_int(MSG_IO_ERROR, io_error);
1622 if (disable_buffering)
1623 io_end_buffering_out();
1625 stats.flist_size = stats.total_written - start_write;
1626 stats.num_files = flist->count;
1629 output_flist(flist);
1632 rprintf(FINFO, "send_file_list done\n");
1635 add_dirs_to_tree(-1, 0, dir_flist->count - 1);
1636 if (file_total == 1) {
1637 /* If we're creating incremental file-lists and there
1638 * was just 1 item in the first file-list, send 1 more
1639 * file-list to check if this is a 1-file xfer. */
1640 if (send_dir_ndx < 0)
1641 write_ndx(f, NDX_DONE);
1643 send_extra_file_list(f, 1);
1650 struct file_list *recv_file_list(int f)
1652 struct file_list *flist;
1657 rprintf(FLOG, "receiving file list\n");
1658 if (show_filelist_p())
1659 start_filelist_progress("receiving file list");
1660 else if (inc_recurse && verbose && !am_server && !first_flist)
1661 rprintf(FCLIENT, "receiving incremental file list\n");
1663 start_read = stats.total_read;
1665 flist = flist_new(0, "recv_file_list");
1667 #ifdef SUPPORT_HARD_LINKS
1668 if (preserve_hard_links && protocol_version < 30)
1673 if (flist->ndx_start == 0)
1674 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
1675 dstart = dir_flist->count;
1681 while ((flags = read_byte(f)) != 0) {
1682 struct file_struct *file;
1684 flist_expand(flist);
1686 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
1687 flags |= read_byte(f) << 8;
1688 file = recv_file_entry(flist, flags, f);
1690 if (inc_recurse && S_ISDIR(file->mode)) {
1691 flist_expand(dir_flist);
1692 dir_flist->files[dir_flist->count++] = file;
1695 flist->files[flist->count++] = file;
1697 maybe_emit_filelist_progress(flist->count);
1700 rprintf(FINFO, "recv_file_name(%s)\n",
1701 f_name(file, NULL));
1704 file_total += flist->count;
1707 rprintf(FINFO, "received %d names\n", flist->count);
1709 if (show_filelist_p())
1710 finish_filelist_progress(flist);
1712 clean_flist(flist, relative_paths, 1);
1715 qsort(dir_flist->files + dstart, dir_flist->count - dstart,
1716 sizeof dir_flist->files[0], (int (*)())file_compare);
1718 recv_uid_list(f, flist);
1720 if (protocol_version < 30) {
1721 /* Recv the io_error flag */
1725 io_error |= read_int(f);
1729 output_flist(flist);
1733 for (i = 0; i < flist->count; i++)
1734 list_file_entry(flist->files[i]);
1738 rprintf(FINFO, "recv_file_list done\n");
1740 stats.flist_size += stats.total_read - start_read;
1741 stats.num_files += flist->count;
1746 /* This is only used once by the receiver if the very first file-list
1747 * has exactly one item in it. */
1748 void recv_additional_file_list(int f)
1750 struct file_list *flist;
1751 int ndx = read_ndx(f);
1752 if (ndx == NDX_DONE) {
1754 change_local_filter_dir(NULL, 0, 0);
1756 ndx = NDX_FLIST_OFFSET - ndx;
1757 if (ndx < 0 || ndx >= dir_flist->count) {
1758 ndx = NDX_FLIST_OFFSET - ndx;
1760 "Invalid dir index: %d (%d - %d)\n",
1761 ndx, NDX_FLIST_OFFSET,
1762 NDX_FLIST_OFFSET - dir_flist->count);
1763 exit_cleanup(RERR_PROTOCOL);
1765 flist = recv_file_list(f);
1766 flist->parent_ndx = ndx;
1770 /* Search for an identically-named item in the file list. Note that the
1771 * items must agree in their directory-ness, or no match is returned. */
1772 int flist_find(struct file_list *flist, struct file_struct *f)
1774 int low = flist->low, high = flist->high;
1775 int diff, mid, mid_up;
1777 while (low <= high) {
1778 mid = (low + high) / 2;
1779 if (F_IS_ACTIVE(flist->files[mid]))
1782 /* Scan for the next non-empty entry using the cached
1783 * distance values. If the value isn't fully up-to-
1784 * date, update it. */
1785 mid_up = mid + F_DEPTH(flist->files[mid]);
1786 if (!F_IS_ACTIVE(flist->files[mid_up])) {
1788 mid_up += F_DEPTH(flist->files[mid_up]);
1789 } while (!F_IS_ACTIVE(flist->files[mid_up]));
1790 F_DEPTH(flist->files[mid]) = mid_up - mid;
1792 if (mid_up > high) {
1793 /* If there's nothing left above us, set high to
1794 * a non-empty entry below us and continue. */
1795 high = mid - (int)flist->files[mid]->len32;
1796 if (!F_IS_ACTIVE(flist->files[high])) {
1798 high -= (int)flist->files[high]->len32;
1799 } while (!F_IS_ACTIVE(flist->files[high]));
1800 flist->files[mid]->len32 = mid - high;
1805 diff = f_name_cmp(flist->files[mid_up], f);
1807 if (protocol_version < 29
1808 && S_ISDIR(flist->files[mid_up]->mode)
1809 != S_ISDIR(f->mode))
1822 * Free up any resources a file_struct has allocated
1823 * and clear the file.
1825 void clear_file(struct file_struct *file)
1827 /* The +1 zeros out the first char of the basename. */
1828 memset(file, 0, FILE_STRUCT_LEN + 1);
1829 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
1830 * entry. Likewise for len32 in the opposite direction. We assume
1831 * that we're alone for now since flist_find() will adjust the counts
1832 * it runs into that aren't up-to-date. */
1833 file->len32 = F_DEPTH(file) = 1;
1836 /* Allocate a new file list. */
1837 struct file_list *flist_new(int flags, char *msg)
1839 struct file_list *flist;
1841 flist = new(struct file_list);
1845 memset(flist, 0, sizeof flist[0]);
1847 if (!(flags & FLIST_TEMP)) {
1849 flist->ndx_start = first_flist->prev->ndx_start
1850 + first_flist->prev->count;
1852 /* This is a doubly linked list with prev looping back to
1853 * the end of the list, but the last next pointer is NULL. */
1855 first_flist = cur_flist = flist->prev = flist;
1857 flist->prev = first_flist->prev;
1858 flist->prev->next = first_flist->prev = flist;
1863 if (!(flist->file_pool = pool_create(FILE_EXTENT, 0, out_of_memory, POOL_INTERN)))
1869 /* Free up all elements in a flist. */
1870 void flist_free(struct file_list *flist)
1873 ; /* Was FLIST_TEMP dir-list. */
1874 else if (flist == flist->prev) {
1875 first_flist = cur_flist = NULL;
1879 if (flist == cur_flist)
1880 cur_flist = flist->next;
1881 if (flist == first_flist)
1882 first_flist = first_flist->next;
1884 flist->prev->next = flist->next;
1886 flist->next = first_flist;
1888 flist->next->prev = flist->prev;
1889 file_total -= flist->count;
1893 pool_destroy(flist->file_pool);
1899 * This routine ensures we don't have any duplicate names in our file list.
1900 * duplicate names can cause corruption because of the pipelining
1902 static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
1904 char fbuf[MAXPATHLEN];
1909 if (flist->count == 0) {
1914 qsort(flist->files, flist->count,
1915 sizeof flist->files[0], (int (*)())file_compare);
1917 for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
1918 if (F_IS_ACTIVE(flist->files[i])) {
1923 flist->low = prev_i;
1924 while (++i < flist->count) {
1926 struct file_struct *file = flist->files[i];
1928 if (!F_IS_ACTIVE(file))
1930 if (f_name_cmp(file, flist->files[prev_i]) == 0)
1932 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
1933 int save_mode = file->mode;
1934 /* Make sure that this directory doesn't duplicate a
1935 * non-directory earlier in the list. */
1936 flist->high = prev_i;
1937 file->mode = S_IFREG;
1938 j = flist_find(flist, file);
1939 file->mode = save_mode;
1943 struct file_struct *fp = flist->files[j];
1945 /* If one is a dir and the other is not, we want to
1946 * keep the dir because it might have contents in the
1948 if (S_ISDIR(file->mode) != S_ISDIR(fp->mode)) {
1949 if (S_ISDIR(file->mode))
1953 } else if (protocol_version < 27)
1957 if (verbose > 1 && !am_server) {
1959 "removing duplicate name %s from file list (%d)\n",
1960 f_name(file, fbuf), drop);
1962 /* Make sure we don't lose track of a user-specified
1964 flist->files[keep]->flags |= flist->files[drop]->flags
1965 & (FLAG_TOP_DIR|FLAG_XFER_DIR);
1967 clear_file(flist->files[drop]);
1970 if (flist->low == drop) {
1972 j < i && !F_IS_ACTIVE(flist->files[j]);
1981 flist->high = no_dups ? prev_i : flist->count - 1;
1984 /* We need to strip off the leading slashes for relative
1985 * paths, but this must be done _after_ the sorting phase. */
1986 for (i = flist->low; i <= flist->high; i++) {
1987 struct file_struct *file = flist->files[i];
1991 while (*file->dirname == '/')
1993 if (!*file->dirname)
1994 file->dirname = NULL;
1998 if (prune_empty_dirs && no_dups) {
1999 int j, prev_depth = 0;
2001 prev_i = 0; /* It's OK that this isn't really true. */
2003 for (i = flist->low; i <= flist->high; i++) {
2004 struct file_struct *fp, *file = flist->files[i];
2006 /* This temporarily abuses the F_DEPTH() value for a
2007 * directory that is in a chain that might get pruned.
2008 * We restore the old value if it gets a reprieve. */
2009 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2010 /* Dump empty dirs when coming back down. */
2011 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2012 fp = flist->files[prev_i];
2013 if (F_DEPTH(fp) >= 0)
2015 prev_i = -F_DEPTH(fp)-1;
2018 prev_depth = F_DEPTH(file);
2019 if (is_excluded(f_name(file, fbuf), 1,
2021 /* Keep dirs through this dir. */
2022 for (j = prev_depth-1; ; j--) {
2023 fp = flist->files[prev_i];
2024 if (F_DEPTH(fp) >= 0)
2026 prev_i = -F_DEPTH(fp)-1;
2030 F_DEPTH(file) = -prev_i-1;
2033 /* Keep dirs through this non-dir. */
2034 for (j = prev_depth; ; j--) {
2035 fp = flist->files[prev_i];
2036 if (F_DEPTH(fp) >= 0)
2038 prev_i = -F_DEPTH(fp)-1;
2043 /* Dump all remaining empty dirs. */
2045 struct file_struct *fp = flist->files[prev_i];
2046 if (F_DEPTH(fp) >= 0)
2048 prev_i = -F_DEPTH(fp)-1;
2052 for (i = flist->low; i <= flist->high; i++) {
2053 if (F_IS_ACTIVE(flist->files[i]))
2057 for (i = flist->high; i >= flist->low; i--) {
2058 if (F_IS_ACTIVE(flist->files[i]))
2065 static void output_flist(struct file_list *flist)
2067 char uidbuf[16], gidbuf[16], depthbuf[16];
2068 struct file_struct *file;
2069 const char *root, *dir, *slash, *name, *trail;
2070 const char *who = who_am_i();
2073 rprintf(FINFO, "[%s] flist start=%d, count=%d, low=%d, high=%d\n",
2074 who, flist->ndx_start, flist->count, flist->low, flist->high);
2075 for (i = 0; i < flist->count; i++) {
2076 file = flist->files[i];
2077 if ((am_root || am_sender) && preserve_uid) {
2078 snprintf(uidbuf, sizeof uidbuf, " uid=%ld",
2082 if (preserve_gid && F_GID(file) != GID_NONE) {
2083 snprintf(gidbuf, sizeof gidbuf, " gid=%ld",
2088 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2089 if (F_IS_ACTIVE(file)) {
2090 root = am_sender ? NS(F_ROOTDIR(file)) : depthbuf;
2091 if ((dir = file->dirname) == NULL)
2095 name = file->basename;
2096 trail = S_ISDIR(file->mode) ? "/" : "";
2098 root = dir = slash = name = trail = "";
2099 rprintf(FINFO, "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2100 who, i, root, dir, slash, name, trail, (int)file->mode,
2101 (double)F_LENGTH(file), uidbuf, gidbuf, file->flags);
2105 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2106 enum fnc_type { t_PATH, t_ITEM };
2108 /* Compare the names of two file_struct entities, similar to how strcmp()
2109 * would do if it were operating on the joined strings.
2111 * Some differences beginning with protocol_version 29: (1) directory names
2112 * are compared with an assumed trailing slash so that they compare in a
2113 * way that would cause them to sort immediately prior to any content they
2114 * may have; (2) a directory of any name compares after a non-directory of
2115 * any name at the same depth; (3) a directory with name "." compares prior
2116 * to anything else. These changes mean that a directory and a non-dir
2117 * with the same name will not compare as equal (protocol_version >= 29).
2119 * The dirname component can be an empty string, but the basename component
2120 * cannot (and never is in the current codebase). The basename component
2121 * may be NULL (for a removed item), in which case it is considered to be
2122 * after any existing item. */
2123 int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
2126 const uchar *c1, *c2;
2127 enum fnc_state state1, state2;
2128 enum fnc_type type1, type2;
2129 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2131 if (!f1 || !F_IS_ACTIVE(f1)) {
2132 if (!f2 || !F_IS_ACTIVE(f2))
2136 if (!f2 || !F_IS_ACTIVE(f2))
2139 c1 = (uchar*)f1->dirname;
2140 c2 = (uchar*)f2->dirname;
2144 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2145 c1 = (const uchar*)f1->basename;
2146 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2148 state1 = s_TRAILING;
2157 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2158 c2 = (const uchar*)f2->basename;
2159 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2161 state2 = s_TRAILING;
2171 return type1 == t_PATH ? 1 : -1;
2181 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2182 c1 = (const uchar*)f1->basename;
2183 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2185 state1 = s_TRAILING;
2191 state1 = s_TRAILING;
2192 if (type1 == t_PATH) {
2201 if (*c2 && type1 != type2)
2202 return type1 == t_PATH ? 1 : -1;
2211 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2212 c2 = (const uchar*)f2->basename;
2213 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2215 state2 = s_TRAILING;
2221 state2 = s_TRAILING;
2222 if (type2 == t_PATH) {
2234 return type1 == t_PATH ? 1 : -1;
2236 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2241 char *f_name_buf(void)
2243 static char names[5][MAXPATHLEN];
2244 static unsigned int n;
2246 n = (n + 1) % (sizeof names / sizeof names[0]);
2251 /* Return a copy of the full filename of a flist entry, using the indicated
2252 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
2253 * done because we checked the size when creating the file_struct entry.
2255 char *f_name(struct file_struct *f, char *fbuf)
2257 if (!f || !F_IS_ACTIVE(f))
2261 fbuf = f_name_buf();
2264 int len = strlen(f->dirname);
2265 memcpy(fbuf, f->dirname, len);
2267 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
2269 strlcpy(fbuf, f->basename, MAXPATHLEN);
2274 /* Do a non-recursive scan of the named directory, possibly ignoring all
2275 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
2276 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
2277 * buffer (the functions we call will append names onto the end, but the old
2278 * dir value will be restored on exit). */
2279 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
2281 struct file_list *dirlist;
2282 char dirbuf[MAXPATHLEN];
2283 int save_recurse = recurse;
2284 int save_xfer_dirs = xfer_dirs;
2287 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
2288 if (dlen >= MAXPATHLEN)
2293 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
2297 send_directory(ignore_filter_rules ? -2 : -1, dirlist, -1, dirname, dlen, 0);
2298 xfer_dirs = save_xfer_dirs;
2299 recurse = save_recurse;
2301 flist_count_offset += dirlist->count;
2303 clean_flist(dirlist, 0, 0);
2306 output_flist(dirlist);