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) 2002-2009 Wayne Davison
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
33 extern int am_generator;
34 extern int inc_recurse;
35 extern int do_progress;
36 extern int always_checksum;
38 extern int ignore_errors;
39 extern int numeric_ids;
43 extern int filesfrom_fd;
44 extern int one_file_system;
45 extern int copy_dirlinks;
46 extern int keep_dirlinks;
47 extern int preserve_uid;
48 extern int preserve_gid;
49 extern int preserve_acls;
50 extern int preserve_xattrs;
51 extern int preserve_links;
52 extern int preserve_hard_links;
53 extern int preserve_devices;
54 extern int preserve_specials;
58 extern int relative_paths;
59 extern int implied_dirs;
60 extern int file_extra_cnt;
61 extern int ignore_perishable;
62 extern int non_perishable_cnt;
63 extern int prune_empty_dirs;
64 extern int copy_links;
65 extern int copy_unsafe_links;
66 extern int protocol_version;
67 extern int sanitize_paths;
68 extern int munge_symlinks;
69 extern int need_unsorted_flist;
70 extern int sender_symlink_iconv;
71 extern int unsort_ndx;
72 extern struct stats stats;
73 extern char *filesfrom_host;
75 extern char curr_dir[MAXPATHLEN];
77 extern struct chmod_mode_struct *chmod_modes;
79 extern struct filter_list_struct filter_list;
80 extern struct filter_list_struct daemon_filter_list;
83 extern int filesfrom_convert;
84 extern iconv_t ic_send, ic_recv;
87 #define PTR_SIZE (sizeof (struct file_struct *))
91 dev_t filesystem_dev; /* used to implement -x */
93 struct file_list *cur_flist, *first_flist, *dir_flist;
94 int send_dir_ndx = -1, send_dir_depth = -1;
95 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
96 int file_total = 0; /* total of all active items over all file-lists */
97 int flist_eof = 0; /* all the file-lists are now known */
100 #define SLASH_ENDING_NAME 1
101 #define DOTDIR_NAME 2
103 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
104 * internally, even if this platform does not allow files to have 64-bit inums.
105 * The only exception is if we're on a platform with no 64-bit type at all.
107 * Because we use read_longint() to get these off the wire, if you transfer
108 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
109 * machine with no 64-bit types then you will get an overflow error.
111 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
112 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
113 * be truncated. But it's a kind of silly thing to do anyhow. */
115 /* The tmp_* vars are used as a cache area by make_file() to store data
116 * that the sender doesn't need to remember in its file list. The data
117 * will survive just long enough to be used by send_file_entry(). */
118 static dev_t tmp_rdev;
119 #ifdef SUPPORT_HARD_LINKS
120 static int64 tmp_dev, tmp_ino;
122 static char tmp_sum[MAX_DIGEST_LEN];
124 static char empty_sum[MAX_DIGEST_LEN];
125 static int flist_count_offset; /* for --delete --progress */
126 static int dir_count = 0;
128 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
129 static void output_flist(struct file_list *flist);
131 void init_flist(void)
134 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
135 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
137 checksum_len = protocol_version < 21 ? 2
138 : protocol_version < 30 ? MD4_DIGEST_LEN
142 static int show_filelist_p(void)
144 return verbose && xfer_dirs && !am_server && !inc_recurse;
147 static void start_filelist_progress(char *kind)
149 rprintf(FCLIENT, "%s ... ", kind);
150 if (verbose > 1 || do_progress)
151 rprintf(FCLIENT, "\n");
155 static void emit_filelist_progress(int count)
157 rprintf(FCLIENT, " %d files...\r", count);
160 static void maybe_emit_filelist_progress(int count)
162 if (do_progress && show_filelist_p() && (count % 100) == 0)
163 emit_filelist_progress(count);
166 static void finish_filelist_progress(const struct file_list *flist)
169 /* This overwrites the progress line */
170 rprintf(FINFO, "%d file%sto consider\n",
171 flist->used, flist->used == 1 ? " " : "s ");
173 rprintf(FINFO, "done\n");
176 void show_flist_stats(void)
181 /* Stat either a symlink or its referent, depending on the settings of
182 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
184 * If path is the name of a symlink, then the linkbuf buffer (which must hold
185 * MAXPATHLEN chars) will be set to the symlink's target string.
187 * The stat structure pointed to by stp will contain information about the
188 * link or the referent as appropriate, if they exist. */
189 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
192 if (link_stat(path, stp, copy_dirlinks) < 0)
194 if (S_ISLNK(stp->st_mode)) {
195 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
198 linkbuf[llen] = '\0';
199 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
201 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
204 return x_stat(path, stp, NULL);
206 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
207 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
208 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
209 llen - SYMLINK_PREFIX_LEN + 1);
214 return x_stat(path, stp, NULL);
218 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
222 return x_stat(path, stp, NULL);
223 if (x_lstat(path, stp, NULL) < 0)
225 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
227 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
232 return x_stat(path, stp, NULL);
236 static inline int is_daemon_excluded(const char *fname, int is_dir)
238 if (daemon_filter_list.head
239 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
246 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
248 if (daemon_filter_list.head) {
251 while ((slash = strchr(slash+1, '/')) != NULL) {
254 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
263 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
272 /* This function is used to check if a file should be included/excluded
273 * from the list of files based on its name and type etc. The value of
274 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
275 static int is_excluded(const char *fname, int is_dir, int filter_level)
277 #if 0 /* This currently never happens, so avoid a useless compare. */
278 if (filter_level == NO_FILTERS)
281 if (is_daemon_excluded(fname, is_dir))
283 if (filter_level != ALL_FILTERS)
286 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
291 static void send_directory(int f, struct file_list *flist,
292 char *fbuf, int len, int flags);
294 static const char *pathname, *orig_dir;
295 static int pathname_len;
297 /* Make sure flist can hold at least flist->used + extra entries. */
298 static void flist_expand(struct file_list *flist, int extra)
300 struct file_struct **new_ptr;
302 if (flist->used + extra <= flist->malloced)
305 if (flist->malloced < FLIST_START)
306 flist->malloced = FLIST_START;
307 else if (flist->malloced >= FLIST_LINEAR)
308 flist->malloced += FLIST_LINEAR;
310 flist->malloced *= 2;
312 /* In case count jumped or we are starting the list
313 * with a known size just set it. */
314 if (flist->malloced < flist->used + extra)
315 flist->malloced = flist->used + extra;
317 new_ptr = realloc_array(flist->files, struct file_struct *,
320 if (verbose >= 2 && flist->malloced != FLIST_START) {
321 rprintf(FCLIENT, "[%s] expand file_list pointer array to %.0f bytes, did%s move\n",
323 (double)sizeof flist->files[0] * flist->malloced,
324 (new_ptr == flist->files) ? " not" : "");
327 flist->files = new_ptr;
330 out_of_memory("flist_expand");
333 static void flist_done_allocating(struct file_list *flist)
335 void *ptr = pool_boundary(flist->file_pool, 8*1024);
336 if (flist->pool_boundary == ptr)
337 flist->pool_boundary = NULL; /* list didn't use any pool memory */
339 flist->pool_boundary = ptr;
342 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
343 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
344 * with dir == NULL taken to be the starting directory, and dirlen < 0
345 * indicating that strdup(dir) should be called and then the -dirlen length
346 * value checked to ensure that it is not daemon-excluded. */
347 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
350 char *cpy = strdup(dir);
352 change_dir(orig_dir, CD_SKIP_CHDIR);
353 if (path_is_daemon_excluded(cpy, 0))
359 if (pathname == F_PATHNAME(file))
361 dir = F_PATHNAME(file);
363 dirlen = strlen(dir);
364 } else if (pathname == dir)
366 if (dir && *dir != '/')
367 change_dir(orig_dir, CD_SKIP_CHDIR);
371 pathname_len = dirlen;
376 if (!change_dir(dir, CD_NORMAL)) {
378 io_error |= IOERR_GENERAL;
379 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
381 change_dir(orig_dir, CD_NORMAL);
390 static void send_file_entry(int f, const char *fname, struct file_struct *file,
392 const char *symlink_name, int symlink_len,
394 int ndx, int first_ndx)
396 static time_t modtime;
398 #ifdef SUPPORT_HARD_LINKS
402 static uint32 rdev_major;
405 static const char *user_name, *group_name;
406 static char lastname[MAXPATHLEN];
407 int first_hlink_ndx = -1;
411 /* Initialize starting value of xflags. */
412 if (protocol_version >= 30 && S_ISDIR(file->mode)) {
414 if (file->flags & FLAG_CONTENT_DIR)
415 xflags = file->flags & FLAG_TOP_DIR;
416 else if (file->flags & FLAG_IMPLIED_DIR)
417 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
419 xflags = XMIT_NO_CONTENT_DIR;
421 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
423 if (file->mode == mode)
424 xflags |= XMIT_SAME_MODE;
428 if ((preserve_devices && IS_DEVICE(mode))
429 || (preserve_specials && IS_SPECIAL(mode))) {
430 if (protocol_version < 28) {
431 if (tmp_rdev == rdev)
432 xflags |= XMIT_SAME_RDEV_pre28;
437 if ((uint32)major(rdev) == rdev_major)
438 xflags |= XMIT_SAME_RDEV_MAJOR;
440 rdev_major = major(rdev);
441 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
442 xflags |= XMIT_RDEV_MINOR_8_pre30;
444 } else if (protocol_version < 28)
445 rdev = MAKEDEV(0, 0);
446 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
447 xflags |= XMIT_SAME_UID;
451 user_name = add_uid(uid);
452 if (inc_recurse && user_name)
453 xflags |= XMIT_USER_NAME_FOLLOWS;
456 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
457 xflags |= XMIT_SAME_GID;
461 group_name = add_gid(gid);
462 if (inc_recurse && group_name)
463 xflags |= XMIT_GROUP_NAME_FOLLOWS;
466 if (file->modtime == modtime)
467 xflags |= XMIT_SAME_TIME;
469 modtime = file->modtime;
471 #ifdef SUPPORT_HARD_LINKS
473 if (protocol_version >= 30) {
474 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
475 first_hlink_ndx = (int32)(long)np->data - 1;
476 if (first_hlink_ndx < 0) {
477 np->data = (void*)(long)(first_ndx + ndx + 1);
478 xflags |= XMIT_HLINK_FIRST;
481 if (tmp_dev == dev) {
482 if (protocol_version >= 28)
483 xflags |= XMIT_SAME_DEV_pre30;
487 xflags |= XMIT_HLINKED;
492 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
494 l2 = strlen(fname+l1);
497 xflags |= XMIT_SAME_NAME;
499 xflags |= XMIT_LONG_NAME;
501 /* We must make sure we don't send a zero flag byte or the
502 * other end will terminate the flist transfer. Note that
503 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
504 * it's harmless way to add a bit to the first flag byte. */
505 if (protocol_version >= 28) {
506 if (!xflags && !S_ISDIR(mode))
507 xflags |= XMIT_TOP_DIR;
508 if ((xflags & 0xFF00) || !xflags) {
509 xflags |= XMIT_EXTENDED_FLAGS;
510 write_shortint(f, xflags);
512 write_byte(f, xflags);
514 if (!(xflags & 0xFF))
515 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
516 write_byte(f, xflags);
518 if (xflags & XMIT_SAME_NAME)
520 if (xflags & XMIT_LONG_NAME)
521 write_varint30(f, l2);
524 write_buf(f, fname + l1, l2);
526 if (first_hlink_ndx >= 0) {
527 write_varint(f, first_hlink_ndx);
528 if (first_hlink_ndx >= first_ndx)
532 write_varlong30(f, F_LENGTH(file), 3);
533 if (!(xflags & XMIT_SAME_TIME)) {
534 if (protocol_version >= 30)
535 write_varlong(f, modtime, 4);
537 write_int(f, modtime);
539 if (!(xflags & XMIT_SAME_MODE))
540 write_int(f, to_wire_mode(mode));
541 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
542 if (protocol_version < 30)
545 write_varint(f, uid);
546 if (xflags & XMIT_USER_NAME_FOLLOWS) {
547 int len = strlen(user_name);
549 write_buf(f, user_name, len);
553 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
554 if (protocol_version < 30)
557 write_varint(f, gid);
558 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
559 int len = strlen(group_name);
561 write_buf(f, group_name, len);
565 if ((preserve_devices && IS_DEVICE(mode))
566 || (preserve_specials && IS_SPECIAL(mode))) {
567 if (protocol_version < 28) {
568 if (!(xflags & XMIT_SAME_RDEV_pre28))
569 write_int(f, (int)rdev);
571 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
572 write_varint30(f, major(rdev));
573 if (protocol_version >= 30)
574 write_varint(f, minor(rdev));
575 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
576 write_byte(f, minor(rdev));
578 write_int(f, minor(rdev));
584 write_varint30(f, symlink_len);
585 write_buf(f, symlink_name, symlink_len);
589 #ifdef SUPPORT_HARD_LINKS
590 if (tmp_dev != 0 && protocol_version < 30) {
591 if (protocol_version < 26) {
592 /* 32-bit dev_t and ino_t */
593 write_int(f, (int32)dev);
594 write_int(f, (int32)tmp_ino);
596 /* 64-bit dev_t and ino_t */
597 if (!(xflags & XMIT_SAME_DEV_pre30))
598 write_longint(f, dev);
599 write_longint(f, tmp_ino);
604 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
609 /* Prior to 28, we sent a useless set of nulls. */
612 write_buf(f, sum, checksum_len);
616 strlcpy(lastname, fname, MAXPATHLEN);
618 if (S_ISREG(mode) || S_ISLNK(mode))
619 stats.total_size += F_LENGTH(file);
622 static struct file_struct *recv_file_entry(struct file_list *flist,
625 static int64 modtime;
627 #ifdef SUPPORT_HARD_LINKS
631 static uint32 rdev_major;
634 static uint16 gid_flags;
635 static char lastname[MAXPATHLEN], *lastdir;
636 static int lastdir_depth, lastdir_len = -1;
637 static unsigned int del_hier_name_len = 0;
638 static int in_del_hier = 0;
639 char thisname[MAXPATHLEN];
640 unsigned int l1 = 0, l2 = 0;
641 int alloc_len, basename_len, linkname_len;
642 int extra_len = file_extra_cnt * EXTRA_LEN;
643 int first_hlink_ndx = -1;
645 const char *basename;
646 struct file_struct *file;
650 if (xflags & XMIT_SAME_NAME)
653 if (xflags & XMIT_LONG_NAME)
654 l2 = read_varint30(f);
658 if (l2 >= MAXPATHLEN - l1) {
660 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
661 xflags, l1, l2, lastname, who_am_i());
662 overflow_exit("recv_file_entry");
665 strlcpy(thisname, lastname, l1 + 1);
666 read_sbuf(f, &thisname[l1], l2);
667 thisname[l1 + l2] = 0;
669 /* Abuse basename_len for a moment... */
670 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
673 if (ic_recv != (iconv_t)-1) {
676 INIT_CONST_XBUF(outbuf, thisname);
677 INIT_XBUF(inbuf, lastname, basename_len, -1);
679 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
680 io_error |= IOERR_GENERAL;
682 "[%s] cannot convert filename: %s (%s)\n",
683 who_am_i(), lastname, strerror(errno));
686 thisname[outbuf.len] = '\0';
691 clean_fname(thisname, 0);
694 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
696 if ((basename = strrchr(thisname, '/')) != NULL) {
697 int len = basename++ - thisname;
698 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
699 lastdir = new_array(char, len + 1);
700 memcpy(lastdir, thisname, len);
703 lastdir_depth = count_dir_elements(lastdir);
707 basename_len = strlen(basename) + 1; /* count the '\0' */
709 #ifdef SUPPORT_HARD_LINKS
710 if (protocol_version >= 30
711 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
712 first_hlink_ndx = read_varint(f);
713 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
715 "hard-link reference out of range: %d (%d)\n",
716 first_hlink_ndx, flist->ndx_start + flist->used);
717 exit_cleanup(RERR_PROTOCOL);
719 if (first_hlink_ndx >= flist->ndx_start) {
720 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
721 file_length = F_LENGTH(first);
722 modtime = first->modtime;
725 uid = F_OWNER(first);
727 gid = F_GROUP(first);
728 if ((preserve_devices && IS_DEVICE(mode))
729 || (preserve_specials && IS_SPECIAL(mode))) {
730 uint32 *devp = F_RDEV_P(first);
731 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
732 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
734 if (preserve_links && S_ISLNK(mode))
735 linkname_len = strlen(F_SYMLINK(first)) + 1;
743 file_length = read_varlong30(f, 3);
744 if (!(xflags & XMIT_SAME_TIME)) {
745 if (protocol_version >= 30) {
746 modtime = read_varlong(f, 4);
747 #if SIZEOF_TIME_T < SIZEOF_INT64
748 if (!am_generator && (int64)(time_t)modtime != modtime) {
750 "Time value of %s truncated on receiver.\n",
755 modtime = read_int(f);
757 if (!(xflags & XMIT_SAME_MODE))
758 mode = from_wire_mode(read_int(f));
760 if (chmod_modes && !S_ISLNK(mode))
761 mode = tweak_mode(mode, chmod_modes);
763 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
764 if (protocol_version < 30)
765 uid = (uid_t)read_int(f);
767 uid = (uid_t)read_varint(f);
768 if (xflags & XMIT_USER_NAME_FOLLOWS)
769 uid = recv_user_name(f, uid);
770 else if (inc_recurse && am_root && !numeric_ids)
771 uid = match_uid(uid);
774 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
775 if (protocol_version < 30)
776 gid = (gid_t)read_int(f);
778 gid = (gid_t)read_varint(f);
780 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
781 gid = recv_group_name(f, gid, &gid_flags);
782 else if (inc_recurse && (!am_root || !numeric_ids))
783 gid = match_gid(gid, &gid_flags);
787 if ((preserve_devices && IS_DEVICE(mode))
788 || (preserve_specials && IS_SPECIAL(mode))) {
789 if (protocol_version < 28) {
790 if (!(xflags & XMIT_SAME_RDEV_pre28))
791 rdev = (dev_t)read_int(f);
794 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
795 rdev_major = read_varint30(f);
796 if (protocol_version >= 30)
797 rdev_minor = read_varint(f);
798 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
799 rdev_minor = read_byte(f);
801 rdev_minor = read_int(f);
802 rdev = MAKEDEV(rdev_major, rdev_minor);
804 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
806 } else if (protocol_version < 28)
807 rdev = MAKEDEV(0, 0);
810 if (preserve_links && S_ISLNK(mode)) {
811 linkname_len = read_varint30(f) + 1; /* count the '\0' */
812 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
813 rprintf(FERROR, "overflow: linkname_len=%d\n",
815 overflow_exit("recv_file_entry");
818 /* We don't know how much extra room we need to convert
819 * the as-yet-unread symlink data, so let's hope that a
820 * double-size buffer is plenty. */
821 if (sender_symlink_iconv)
825 linkname_len += SYMLINK_PREFIX_LEN;
831 #ifdef SUPPORT_HARD_LINKS
833 if (preserve_hard_links) {
834 if (protocol_version < 28 && S_ISREG(mode))
835 xflags |= XMIT_HLINKED;
836 if (xflags & XMIT_HLINKED)
837 extra_len += (inc_recurse+1) * EXTRA_LEN;
842 /* Directories need an extra int32 for the default ACL. */
843 if (preserve_acls && S_ISDIR(mode))
844 extra_len += EXTRA_LEN;
847 if (always_checksum && S_ISREG(mode))
848 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
850 #if SIZEOF_INT64 >= 8
851 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
852 extra_len += EXTRA_LEN;
854 if (file_length < 0) {
855 rprintf(FERROR, "Offset underflow: file-length is negative\n");
856 exit_cleanup(RERR_UNSUPPORTED);
859 if (inc_recurse && S_ISDIR(mode)) {
860 if (one_file_system) {
861 /* Room to save the dir's device for -x */
862 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
864 pool = dir_flist->file_pool;
866 pool = flist->file_pool;
868 #if EXTRA_ROUNDING > 0
869 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
870 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
873 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
875 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
877 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
879 file = (struct file_struct *)bp;
880 bp += FILE_STRUCT_LEN;
882 memcpy(bp, basename, basename_len);
884 #ifdef SUPPORT_HARD_LINKS
885 if (xflags & XMIT_HLINKED)
886 file->flags |= FLAG_HLINKED;
888 file->modtime = (time_t)modtime;
889 file->len32 = (uint32)file_length;
890 #if SIZEOF_INT64 >= 8
891 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
892 #if SIZEOF_CAPITAL_OFF_T < 8
893 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
894 exit_cleanup(RERR_UNSUPPORTED);
896 file->flags |= FLAG_LENGTH64;
897 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
906 file->flags |= gid_flags;
909 F_NDX(file) = flist->used + flist->ndx_start;
911 if (basename != thisname) {
912 file->dirname = lastdir;
913 F_DEPTH(file) = lastdir_depth + 1;
918 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
920 if (protocol_version >= 30) {
921 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
922 if (xflags & XMIT_TOP_DIR)
923 file->flags |= FLAG_TOP_DIR;
924 file->flags |= FLAG_CONTENT_DIR;
925 } else if (xflags & XMIT_TOP_DIR)
926 file->flags |= FLAG_IMPLIED_DIR;
927 } else if (xflags & XMIT_TOP_DIR) {
928 in_del_hier = recurse;
929 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
930 if (relative_paths && del_hier_name_len > 2
931 && lastname[del_hier_name_len-1] == '.'
932 && lastname[del_hier_name_len-2] == '/')
933 del_hier_name_len -= 2;
934 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
935 } else if (in_del_hier) {
936 if (!relative_paths || !del_hier_name_len
937 || (l1 >= del_hier_name_len
938 && lastname[del_hier_name_len] == '/'))
939 file->flags |= FLAG_CONTENT_DIR;
945 if ((preserve_devices && IS_DEVICE(mode))
946 || (preserve_specials && IS_SPECIAL(mode))) {
947 uint32 *devp = F_RDEV_P(file);
948 DEV_MAJOR(devp) = major(rdev);
949 DEV_MINOR(devp) = minor(rdev);
955 if (first_hlink_ndx >= flist->ndx_start) {
956 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
957 memcpy(bp, F_SYMLINK(first), linkname_len);
959 if (munge_symlinks) {
960 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
961 bp += SYMLINK_PREFIX_LEN;
962 linkname_len -= SYMLINK_PREFIX_LEN;
965 if (sender_symlink_iconv) {
968 alloc_len = linkname_len;
971 /* Read the symlink data into the end of our double-sized
972 * buffer and then convert it into the right spot. */
973 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
974 linkname_len - 1, (size_t)-1);
975 read_sbuf(f, inbuf.buf, inbuf.len);
976 INIT_XBUF(outbuf, bp, 0, alloc_len);
978 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
979 io_error |= IOERR_GENERAL;
981 "[%s] cannot convert symlink data for: %s (%s)\n",
982 who_am_i(), full_fname(thisname), strerror(errno));
983 bp = (char*)file->basename;
987 bp[outbuf.len] = '\0';
990 read_sbuf(f, bp, linkname_len - 1);
991 if (sanitize_paths && !munge_symlinks && *bp)
992 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
997 #ifdef SUPPORT_HARD_LINKS
998 if (preserve_hard_links && xflags & XMIT_HLINKED) {
999 if (protocol_version >= 30) {
1000 if (xflags & XMIT_HLINK_FIRST) {
1001 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1003 F_HL_GNUM(file) = first_hlink_ndx;
1005 static int32 cnt = 0;
1006 struct ht_int64_node *np;
1009 if (protocol_version < 26) {
1013 if (!(xflags & XMIT_SAME_DEV_pre30))
1014 dev = read_longint(f);
1015 ino = read_longint(f);
1017 np = idev_find(dev, ino);
1018 ndx = (int32)(long)np->data - 1;
1021 np->data = (void*)(long)cnt;
1023 F_HL_GNUM(file) = ndx;
1028 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1032 /* Prior to 28, we get a useless set of nulls. */
1035 if (first_hlink_ndx >= flist->ndx_start) {
1036 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1037 memcpy(bp, F_SUM(first), checksum_len);
1039 read_buf(f, bp, checksum_len);
1043 if (preserve_acls && !S_ISLNK(mode))
1044 receive_acl(file, f);
1046 #ifdef SUPPORT_XATTRS
1047 if (preserve_xattrs)
1048 receive_xattr(file, f );
1051 if (S_ISREG(mode) || S_ISLNK(mode))
1052 stats.total_size += file_length;
1057 /* Create a file_struct for a named file by reading its stat() information
1058 * and performing extensive checks against global options.
1060 * Returns a pointer to the new file struct, or NULL if there was an error
1061 * or this file should be excluded.
1063 * Note: Any error (here or in send_file_name) that results in the omission of
1064 * an existent source file from the file list should set
1065 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1066 * destination if --delete is on. */
1067 struct file_struct *make_file(const char *fname, struct file_list *flist,
1068 STRUCT_STAT *stp, int flags, int filter_level)
1070 static char *lastdir;
1071 static int lastdir_len = -1;
1072 struct file_struct *file;
1073 char thisname[MAXPATHLEN];
1074 char linkname[MAXPATHLEN];
1075 int alloc_len, basename_len, linkname_len;
1076 int extra_len = file_extra_cnt * EXTRA_LEN;
1077 const char *basename;
1082 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1083 io_error |= IOERR_GENERAL;
1084 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1087 clean_fname(thisname, 0);
1089 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1091 if (stp && S_ISDIR(stp->st_mode)) {
1092 st = *stp; /* Needed for "symlink/." with --relative. */
1093 *linkname = '\0'; /* make IBM code checker happy */
1094 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1095 int save_errno = errno;
1096 /* See if file is excluded before reporting an error. */
1097 if (filter_level != NO_FILTERS
1098 && (is_excluded(thisname, 0, filter_level)
1099 || is_excluded(thisname, 1, filter_level))) {
1100 if (ignore_perishable && save_errno != ENOENT)
1101 non_perishable_cnt++;
1104 if (save_errno == ENOENT) {
1105 #ifdef SUPPORT_LINKS
1106 /* When our options tell us to follow a symlink that
1107 * points nowhere, tell the user about the symlink
1108 * instead of giving a "vanished" message. We only
1109 * dereference a symlink if one of the --copy*links
1110 * options was specified, so there's no need for the
1111 * extra lstat() if one of these options isn't on. */
1112 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1113 && x_lstat(thisname, &st, NULL) == 0
1114 && S_ISLNK(st.st_mode)) {
1115 io_error |= IOERR_GENERAL;
1116 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1117 full_fname(thisname));
1121 enum logcode c = am_daemon && protocol_version < 28
1122 ? FERROR : FWARNING;
1123 io_error |= IOERR_VANISHED;
1124 rprintf(c, "file has vanished: %s\n",
1125 full_fname(thisname));
1128 io_error |= IOERR_GENERAL;
1129 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1130 full_fname(thisname));
1135 if (filter_level == NO_FILTERS)
1138 if (S_ISDIR(st.st_mode)) {
1140 rprintf(FINFO, "skipping directory %s\n", thisname);
1143 /* -x only affects dirs because we need to avoid recursing
1144 * into a mount-point directory, not to avoid copying a
1145 * symlinked file if -L (or similar) was specified. */
1146 if (one_file_system && st.st_dev != filesystem_dev
1147 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1148 if (one_file_system > 1) {
1151 "[%s] skipping mount-point dir %s\n",
1152 who_am_i(), thisname);
1156 flags |= FLAG_MOUNT_DIR;
1157 flags &= ~FLAG_CONTENT_DIR;
1160 flags &= ~FLAG_CONTENT_DIR;
1162 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1163 if (ignore_perishable)
1164 non_perishable_cnt++;
1168 if (lp_ignore_nonreadable(module_id)) {
1169 #ifdef SUPPORT_LINKS
1170 if (!S_ISLNK(st.st_mode))
1172 if (access(thisname, R_OK) != 0)
1178 /* Only divert a directory in the main transfer. */
1180 if (flist->prev && S_ISDIR(st.st_mode)
1181 && flags & FLAG_DIVERT_DIRS) {
1182 /* Room for parent/sibling/next-child info. */
1183 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1185 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1186 pool = dir_flist->file_pool;
1188 pool = flist->file_pool;
1191 /* Directories need an extra int32 for the default ACL. */
1192 if (preserve_acls && S_ISDIR(st.st_mode))
1193 extra_len += EXTRA_LEN;
1199 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1200 who_am_i(), thisname, filter_level);
1203 if ((basename = strrchr(thisname, '/')) != NULL) {
1204 int len = basename++ - thisname;
1205 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1206 lastdir = new_array(char, len + 1);
1207 memcpy(lastdir, thisname, len);
1208 lastdir[len] = '\0';
1212 basename = thisname;
1213 basename_len = strlen(basename) + 1; /* count the '\0' */
1215 #ifdef SUPPORT_LINKS
1216 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1221 #if SIZEOF_CAPITAL_OFF_T >= 8
1222 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1223 extra_len += EXTRA_LEN;
1226 #if EXTRA_ROUNDING > 0
1227 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1228 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1231 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1234 bp = pool_alloc(pool, alloc_len, "make_file");
1236 if (!(bp = new_array(char, alloc_len)))
1237 out_of_memory("make_file");
1240 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1242 file = (struct file_struct *)bp;
1243 bp += FILE_STRUCT_LEN;
1245 memcpy(bp, basename, basename_len);
1247 #ifdef SUPPORT_HARD_LINKS
1248 if (preserve_hard_links && flist && flist->prev) {
1249 if (protocol_version >= 28
1250 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1251 : S_ISREG(st.st_mode)) {
1252 tmp_dev = (int64)st.st_dev + 1;
1253 tmp_ino = (int64)st.st_ino;
1259 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1260 if (IS_DEVICE(st.st_mode) || IS_SPECIAL(st.st_mode)) {
1261 tmp_rdev = st.st_rdev;
1266 file->flags = flags;
1267 file->modtime = st.st_mtime;
1268 file->len32 = (uint32)st.st_size;
1269 #if SIZEOF_CAPITAL_OFF_T >= 8
1270 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1271 file->flags |= FLAG_LENGTH64;
1272 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1275 file->mode = st.st_mode;
1276 if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1277 F_OWNER(file) = st.st_uid;
1278 if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1279 F_GROUP(file) = st.st_gid;
1281 if (basename != thisname)
1282 file->dirname = lastdir;
1284 #ifdef SUPPORT_LINKS
1286 memcpy(bp + basename_len, linkname, linkname_len);
1289 if (always_checksum && am_sender && S_ISREG(st.st_mode))
1290 file_checksum(thisname, tmp_sum, st.st_size);
1293 F_PATHNAME(file) = pathname;
1295 F_DEPTH(file) = extra_len / EXTRA_LEN;
1297 if (basename_len == 0+1) {
1304 F_NDX(file) = dir_count;
1309 /* Only called for temporary file_struct entries created by make_file(). */
1310 void unmake_file(struct file_struct *file)
1312 free(REQ_EXTRA(file, F_DEPTH(file)));
1315 static struct file_struct *send_file_name(int f, struct file_list *flist,
1316 const char *fname, STRUCT_STAT *stp,
1317 int flags, int filter_level)
1319 struct file_struct *file;
1321 file = make_file(fname, flist, stp, flags, filter_level);
1325 if (chmod_modes && !S_ISLNK(file->mode))
1326 file->mode = tweak_mode(file->mode, chmod_modes);
1329 char fbuf[MAXPATHLEN];
1330 #ifdef SUPPORT_LINKS
1331 const char *symlink_name;
1334 char symlink_buf[MAXPATHLEN];
1337 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1341 #ifdef SUPPORT_LINKS
1342 if (preserve_links && S_ISLNK(file->mode)) {
1343 symlink_name = F_SYMLINK(file);
1344 symlink_len = strlen(symlink_name);
1346 symlink_name = NULL;
1352 if (ic_send != (iconv_t)-1) {
1355 INIT_CONST_XBUF(outbuf, fbuf);
1357 if (file->dirname) {
1358 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1359 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1360 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1363 fbuf[outbuf.len++] = '/';
1366 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1367 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1369 io_error |= IOERR_GENERAL;
1370 rprintf(FERROR_XFER,
1371 "[%s] cannot convert filename: %s (%s)\n",
1372 who_am_i(), f_name(file, fbuf), strerror(errno));
1375 fbuf[outbuf.len] = '\0';
1377 #ifdef SUPPORT_LINKS
1378 if (symlink_len && sender_symlink_iconv) {
1379 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1380 INIT_CONST_XBUF(outbuf, symlink_buf);
1381 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1382 io_error |= IOERR_GENERAL;
1384 rprintf(FERROR_XFER,
1385 "[%s] cannot convert symlink data for: %s (%s)\n",
1386 who_am_i(), full_fname(fbuf), strerror(errno));
1389 symlink_buf[outbuf.len] = '\0';
1391 symlink_name = symlink_buf;
1392 symlink_len = outbuf.len;
1400 if (preserve_acls && !S_ISLNK(file->mode)) {
1401 sx.st.st_mode = file->mode;
1402 sx.acc_acl = sx.def_acl = NULL;
1403 if (get_acl(fname, &sx) < 0) {
1404 io_error |= IOERR_GENERAL;
1409 #ifdef SUPPORT_XATTRS
1410 if (preserve_xattrs) {
1412 if (get_xattr(fname, &sx) < 0) {
1413 io_error |= IOERR_GENERAL;
1419 send_file_entry(f, fbuf, file,
1420 #ifdef SUPPORT_LINKS
1421 symlink_name, symlink_len,
1423 flist->used, flist->ndx_start);
1426 if (preserve_acls && !S_ISLNK(file->mode)) {
1431 #ifdef SUPPORT_XATTRS
1432 if (preserve_xattrs) {
1433 F_XATTR(file) = send_xattr(&sx, f);
1439 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1441 flist_expand(flist, 1);
1442 flist->files[flist->used++] = file;
1447 static void send_if_directory(int f, struct file_list *flist,
1448 struct file_struct *file,
1449 char *fbuf, unsigned int ol,
1452 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1454 if (S_ISDIR(file->mode)
1455 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1457 unsigned int len = strlen(fbuf);
1458 if (len > 1 && fbuf[len-1] == '/')
1460 if (len >= MAXPATHLEN - 1) {
1461 io_error |= IOERR_GENERAL;
1462 rprintf(FERROR_XFER, "skipping long-named directory: %s\n",
1466 save_filters = push_local_filters(fbuf, len);
1467 send_directory(f, flist, fbuf, len, flags);
1468 pop_local_filters(save_filters);
1475 static int file_compare(const void *file1, const void *file2)
1477 return f_name_cmp(*(struct file_struct **)file1,
1478 *(struct file_struct **)file2);
1481 /* The guts of a merge-sort algorithm. This was derived from the glibc
1482 * version, but I (Wayne) changed the merge code to do less copying and
1483 * to require only half the amount of temporary memory. */
1484 static void fsort_tmp(struct file_struct **fp, size_t num,
1485 struct file_struct **tmp)
1487 struct file_struct **f1, **f2, **t;
1496 fsort_tmp(f1, n1, tmp);
1498 fsort_tmp(f2, n2, tmp);
1500 while (f_name_cmp(*f1, *f2) <= 0) {
1507 memcpy(t, f1, n1 * PTR_SIZE);
1509 *f1++ = *f2++, n2--;
1511 while (n1 > 0 && n2 > 0) {
1512 if (f_name_cmp(*t, *f2) <= 0)
1515 *f1++ = *f2++, n2--;
1519 memcpy(f1, t, n1 * PTR_SIZE);
1522 /* This file-struct sorting routine makes sure that any identical names in
1523 * the file list stay in the same order as they were in the original list.
1524 * This is particularly vital in inc_recurse mode where we expect a sort
1525 * on the flist to match the exact order of a sort on the dir_flist. */
1526 static void fsort(struct file_struct **fp, size_t num)
1532 qsort(fp, num, PTR_SIZE, file_compare);
1534 struct file_struct **tmp = new_array(struct file_struct *,
1536 fsort_tmp(fp, num, tmp);
1541 /* We take an entire set of sibling dirs from the sorted flist and link them
1542 * into the tree, setting the appropriate parent/child/sibling pointers. */
1543 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1548 int32 *parent_dp = parent_ndx < 0 ? NULL
1549 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1551 flist_expand(dir_flist, dir_cnt);
1552 dir_flist->sorted = dir_flist->files;
1554 for (i = 0; dir_cnt; i++) {
1555 struct file_struct *file = from_flist->sorted[i];
1557 if (!S_ISDIR(file->mode))
1560 dir_flist->files[dir_flist->used++] = file;
1563 if (file->basename[0] == '.' && file->basename[1] == '\0')
1567 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1569 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1571 send_dir_ndx = dir_flist->used - 1;
1573 dp = F_DIR_NODE_P(file);
1574 DIR_PARENT(dp) = parent_ndx;
1575 DIR_FIRST_CHILD(dp) = -1;
1578 DIR_NEXT_SIBLING(dp) = -1;
1581 /* This function is normally called by the sender, but the receiving side also
1582 * calls it from get_dirlist() with f set to -1 so that we just construct the
1583 * file list in memory without sending it over the wire. Also, get_dirlist()
1584 * might call this with f set to -2, which also indicates that local filter
1585 * rules should be ignored. */
1586 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1593 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1594 int start = flist->used;
1595 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1597 assert(flist != NULL);
1599 if (!(d = opendir(fbuf))) {
1600 if (errno == ENOENT)
1602 io_error |= IOERR_GENERAL;
1603 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1608 if (len != 1 || *fbuf != '/')
1611 remainder = MAXPATHLEN - (p - fbuf);
1613 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1614 char *dname = d_name(di);
1615 if (dname[0] == '.' && (dname[1] == '\0'
1616 || (dname[1] == '.' && dname[2] == '\0')))
1618 if (strlcpy(p, dname, remainder) >= remainder) {
1619 io_error |= IOERR_GENERAL;
1620 rprintf(FERROR_XFER,
1621 "cannot send long-named file %s\n",
1625 if (dname[0] == '\0') {
1626 io_error |= IOERR_GENERAL;
1627 rprintf(FERROR_XFER,
1628 "cannot send file with empty name in %s\n",
1633 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1639 io_error |= IOERR_GENERAL;
1640 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1645 if (f >= 0 && recurse && !divert_dirs) {
1646 int i, end = flist->used - 1;
1647 /* send_if_directory() bumps flist->used, so use "end". */
1648 for (i = start; i <= end; i++)
1649 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1653 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1654 char *start, char *limit, int flags, char name_type)
1656 static char lastpath[MAXPATHLEN] = "";
1657 static int lastpath_len = 0;
1658 static struct file_struct *lastpath_struct = NULL;
1659 struct file_struct *file;
1660 item_list *relname_list;
1661 relnamecache **rnpp;
1662 int len, need_new_dir, depth = 0;
1663 struct filter_list_struct save_filter_list = filter_list;
1665 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1666 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1669 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1670 && lastpath_len == limit - fname
1671 && strncmp(lastpath, fname, lastpath_len) == 0)
1676 char *tp = fname, *lp = lastpath;
1677 /* Skip any initial directories in our path that we
1678 * have in common with lastpath. */
1679 assert(start == fname);
1680 for ( ; ; tp++, lp++) {
1682 if (*lp == '/' || *lp == '\0')
1697 int save_copy_links = copy_links;
1698 int save_xfer_dirs = xfer_dirs;
1701 copy_links = xfer_dirs = 1;
1705 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1707 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1709 if (!inc_recurse && file && S_ISDIR(file->mode))
1710 change_local_filter_dir(fname, strlen(fname), depth);
1714 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1716 if (file && !S_ISDIR(file->mode))
1718 lastpath_struct = file;
1719 } else if (file && S_ISDIR(file->mode))
1720 change_local_filter_dir(fname, strlen(fname), ++depth);
1722 strlcpy(lastpath, fname, sizeof lastpath);
1723 lastpath_len = limit - fname;
1727 copy_links = save_copy_links;
1728 xfer_dirs = save_xfer_dirs;
1734 if (!lastpath_struct)
1735 goto done; /* dir must have vanished */
1737 len = strlen(limit+1);
1738 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1739 if (!relname_list) {
1740 if (!(relname_list = new0(item_list)))
1741 out_of_memory("send_implied_dirs");
1742 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1744 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1745 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1746 out_of_memory("send_implied_dirs");
1747 (*rnpp)->name_type = name_type;
1748 strlcpy((*rnpp)->fname, limit+1, len + 1);
1751 filter_list = save_filter_list;
1754 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1756 char fbuf[MAXPATHLEN];
1757 item_list *relname_list;
1758 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1762 dlen = strlen(fbuf);
1764 if (!change_pathname(file, NULL, 0))
1765 exit_cleanup(RERR_FILESELECT);
1767 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1769 if (file->flags & FLAG_CONTENT_DIR) {
1770 if (one_file_system) {
1772 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1773 io_error |= IOERR_GENERAL;
1774 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1778 filesystem_dev = st.st_dev;
1780 send_directory(f, flist, fbuf, dlen, flags);
1783 if (!relative_paths)
1786 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1790 for (j = 0; j < relname_list->count; j++) {
1792 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1793 char name_type = rnp->name_type;
1796 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1798 if (len >= (int)sizeof fbuf)
1799 continue; /* Impossible... */
1801 slash = strchr(fbuf+dlen+1, '/');
1803 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1807 if (name_type != NORMAL_NAME) {
1809 if (link_stat(fbuf, &st, 1) != 0) {
1810 io_error |= IOERR_GENERAL;
1811 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1815 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1817 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1823 void send_extra_file_list(int f, int at_least)
1825 struct file_list *flist;
1828 int old_cnt, save_io_error = io_error;
1833 /* Keep sending data until we have the requested number of
1834 * files in the upcoming file-lists. */
1835 old_cnt = cur_flist->used;
1836 for (flist = first_flist; flist != cur_flist; flist = flist->next)
1837 old_cnt += flist->used;
1838 while (file_total - old_cnt < at_least) {
1839 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1840 int dir_ndx, dstart = dir_count;
1841 const char *pathname = F_PATHNAME(file);
1844 flist = flist_new(0, "send_extra_file_list");
1845 start_write = stats.total_written;
1848 dir_ndx = F_NDX(file);
1850 dir_ndx = send_dir_ndx;
1851 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1852 flist->parent_ndx = dir_ndx;
1854 send1extra(f, file, flist);
1855 prev_flags = file->flags;
1856 dp = F_DIR_NODE_P(file);
1858 /* If there are any duplicate directory names that follow, we
1859 * send all the dirs together in one file-list. The dir_flist
1860 * tree links all the child subdirs onto the last dup dir. */
1861 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1862 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1863 send_dir_ndx = dir_ndx;
1864 file = dir_flist->sorted[dir_ndx];
1865 /* Try to avoid some duplicate scanning of identical dirs. */
1866 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1867 file->flags &= ~FLAG_CONTENT_DIR;
1868 send1extra(f, file, flist);
1869 prev_flags = file->flags;
1870 dp = F_DIR_NODE_P(file);
1875 if (need_unsorted_flist) {
1876 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1877 out_of_memory("send_extra_file_list");
1878 memcpy(flist->sorted, flist->files,
1879 flist->used * sizeof (struct file_struct*));
1881 flist->sorted = flist->files;
1883 flist_sort_and_clean(flist, 0);
1885 add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
1886 flist_done_allocating(flist);
1888 file_total += flist->used;
1889 stats.flist_size += stats.total_written - start_write;
1890 stats.num_files += flist->used;
1892 output_flist(flist);
1894 if (DIR_FIRST_CHILD(dp) >= 0) {
1895 send_dir_ndx = DIR_FIRST_CHILD(dp);
1898 while (DIR_NEXT_SIBLING(dp) < 0) {
1899 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1900 write_ndx(f, NDX_FLIST_EOF);
1902 change_local_filter_dir(NULL, 0, 0);
1906 file = dir_flist->sorted[send_dir_ndx];
1907 dp = F_DIR_NODE_P(file);
1909 send_dir_ndx = DIR_NEXT_SIBLING(dp);
1914 if (io_error != save_io_error && !ignore_errors)
1915 send_msg_int(MSG_IO_ERROR, io_error);
1918 struct file_list *send_file_list(int f, int argc, char *argv[])
1920 static const char *lastdir;
1921 static int lastdir_len = -1;
1925 struct file_list *flist;
1926 struct timeval start_tv, end_tv;
1929 int disable_buffering;
1930 int flags = recurse ? FLAG_CONTENT_DIR : 0;
1931 int reading_remotely = filesfrom_host != NULL;
1932 int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
1934 | (filesfrom_convert ? RL_CONVERT : 0)
1936 | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
1937 int implied_dot_dir = 0;
1939 rprintf(FLOG, "building file list\n");
1940 if (show_filelist_p())
1941 start_filelist_progress("building file list");
1942 else if (inc_recurse && verbose && !am_server)
1943 rprintf(FCLIENT, "sending incremental file list\n");
1945 start_write = stats.total_written;
1946 gettimeofday(&start_tv, NULL);
1948 if (relative_paths && protocol_version >= 30)
1949 implied_dirs = 1; /* We send flagged implied dirs */
1951 #ifdef SUPPORT_HARD_LINKS
1952 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
1956 flist = cur_flist = flist_new(0, "send_file_list");
1958 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
1959 flags |= FLAG_DIVERT_DIRS;
1961 dir_flist = cur_flist;
1963 disable_buffering = io_start_buffering_out(f);
1964 if (filesfrom_fd >= 0) {
1965 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
1966 rsyserr(FERROR_XFER, errno, "change_dir %s failed",
1967 full_fname(argv[0]));
1968 exit_cleanup(RERR_FILESELECT);
1974 orig_dir = strdup(curr_dir);
1977 char fbuf[MAXPATHLEN], *fn, name_type;
1980 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
1982 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
1986 strlcpy(fbuf, *argv++, MAXPATHLEN);
1988 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
1992 if (relative_paths) {
1993 /* We clean up fbuf below. */
1994 name_type = NORMAL_NAME;
1995 } else if (!len || fbuf[len - 1] == '/') {
1996 if (len == 2 && fbuf[0] == '.') {
1997 /* Turn "./" into just "." rather than "./." */
2000 if (len + 1 >= MAXPATHLEN)
2001 overflow_exit("send_file_list");
2005 name_type = DOTDIR_NAME;
2006 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2007 && (len == 2 || fbuf[len-3] == '/')) {
2008 if (len + 2 >= MAXPATHLEN)
2009 overflow_exit("send_file_list");
2013 name_type = DOTDIR_NAME;
2014 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2015 name_type = DOTDIR_NAME;
2017 name_type = NORMAL_NAME;
2021 if (!relative_paths) {
2022 p = strrchr(fbuf, '/');
2029 len -= p - fbuf + 1;
2034 if ((p = strstr(fbuf, "/./")) != NULL) {
2040 clean_fname(dir, 0);
2046 *--fn = '\0'; /* ensure room for '.' */
2049 /* A leading ./ can be used in relative mode to affect
2050 * the dest dir without its name being in the path. */
2051 if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2052 send_file_name(f, flist, ".", NULL,
2053 (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2055 implied_dot_dir = 1;
2057 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2058 | CFN_DROP_TRAILING_DOT_DIR);
2063 name_type = DOTDIR_NAME;
2064 } else if (fn[0] == '.')
2065 name_type = DOTDIR_NAME;
2066 } else if (fn[len-1] == '/') {
2068 if (len == 1 && *fn == '.')
2069 name_type = DOTDIR_NAME;
2071 name_type = SLASH_ENDING_NAME;
2073 /* Reject a ".." dir in the active part of the path. */
2074 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2075 if ((p[2] == '/' || p[2] == '\0')
2076 && (p == fn || p[-1] == '/')) {
2078 "found \"..\" dir in relative path: %s\n",
2080 exit_cleanup(RERR_SYNTAX);
2088 name_type = DOTDIR_NAME;
2091 dirlen = dir ? strlen(dir) : 0;
2092 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2093 if (!change_pathname(NULL, dir, -dirlen))
2096 lastdir_len = pathname_len;
2097 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2101 memmove(fbuf, fn, len + 1);
2103 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2104 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2105 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2106 io_error |= IOERR_GENERAL;
2107 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2112 /* A dot-dir should not be excluded! */
2113 if (name_type != DOTDIR_NAME
2114 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2117 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2118 rprintf(FINFO, "skipping directory %s\n", fbuf);
2122 if (inc_recurse && relative_paths && *fbuf) {
2123 if ((p = strchr(fbuf+1, '/')) != NULL) {
2124 if (p - fbuf == 1 && *fbuf == '.') {
2125 if ((fn = strchr(p+1, '/')) != NULL)
2129 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2133 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2134 /* Send the implied directories at the start of the
2135 * source spec, so we get their permissions right. */
2136 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2139 if (one_file_system)
2140 filesystem_dev = st.st_dev;
2142 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2143 struct file_struct *file;
2144 file = send_file_name(f, flist, fbuf, &st,
2145 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2150 if (name_type == DOTDIR_NAME) {
2151 if (send_dir_depth < 0) {
2153 change_local_filter_dir(fbuf, len, send_dir_depth);
2155 send_directory(f, flist, fbuf, len, flags);
2158 send_if_directory(f, flist, file, fbuf, len, flags);
2160 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2163 gettimeofday(&end_tv, NULL);
2164 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2165 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2166 if (stats.flist_buildtime == 0)
2167 stats.flist_buildtime = 1;
2170 write_byte(f, 0); /* Indicate end of file list */
2172 #ifdef SUPPORT_HARD_LINKS
2173 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2177 if (show_filelist_p())
2178 finish_filelist_progress(flist);
2180 gettimeofday(&end_tv, NULL);
2181 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2182 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2184 /* When converting names, both sides keep an unsorted file-list array
2185 * because the names will differ on the sending and receiving sides
2186 * (both sides will use the unsorted index number for each item). */
2188 /* Sort the list without removing any duplicates. This allows the
2189 * receiving side to ask for whatever name it kept. For incremental
2190 * recursion mode, the sender marks duplicate dirs so that it can
2191 * send them together in a single file-list. */
2192 if (need_unsorted_flist) {
2193 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2194 out_of_memory("send_file_list");
2195 memcpy(flist->sorted, flist->files,
2196 flist->used * sizeof (struct file_struct*));
2198 flist->sorted = flist->files;
2199 flist_sort_and_clean(flist, 0);
2200 file_total += flist->used;
2202 if (numeric_ids <= 0 && !inc_recurse)
2205 /* send the io_error flag */
2206 if (protocol_version < 30)
2207 write_int(f, ignore_errors ? 0 : io_error);
2208 else if (io_error && !ignore_errors)
2209 send_msg_int(MSG_IO_ERROR, io_error);
2211 if (disable_buffering)
2212 io_end_buffering_out();
2214 stats.flist_size = stats.total_written - start_write;
2215 stats.num_files = flist->used;
2218 output_flist(flist);
2221 rprintf(FINFO, "send_file_list done\n");
2225 add_dirs_to_tree(-1, flist, dir_count);
2226 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2227 flist->parent_ndx = -1;
2228 flist_done_allocating(flist);
2229 if (send_dir_ndx < 0) {
2230 write_ndx(f, NDX_FLIST_EOF);
2233 else if (file_total == 1) {
2234 /* If we're creating incremental file-lists and there
2235 * was just 1 item in the first file-list, send 1 more
2236 * file-list to check if this is a 1-file xfer. */
2237 send_extra_file_list(f, 1);
2244 struct file_list *recv_file_list(int f)
2246 struct file_list *flist;
2249 int save_verbose = verbose;
2252 rprintf(FLOG, "receiving file list\n");
2253 if (show_filelist_p())
2254 start_filelist_progress("receiving file list");
2255 else if (inc_recurse && verbose && !am_server && !first_flist)
2256 rprintf(FCLIENT, "receiving incremental file list\n");
2258 start_read = stats.total_read;
2260 #ifdef SUPPORT_HARD_LINKS
2261 if (preserve_hard_links && !first_flist)
2265 flist = flist_new(0, "recv_file_list");
2268 if (flist->ndx_start == 1)
2269 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2270 dstart = dir_flist->used;
2276 if (am_server && verbose > 2)
2278 while ((flags = read_byte(f)) != 0) {
2279 struct file_struct *file;
2281 flist_expand(flist, 1);
2283 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2284 flags |= read_byte(f) << 8;
2285 file = recv_file_entry(flist, flags, f);
2287 if (inc_recurse && S_ISDIR(file->mode)) {
2288 flist_expand(dir_flist, 1);
2289 dir_flist->files[dir_flist->used++] = file;
2292 flist->files[flist->used++] = file;
2294 maybe_emit_filelist_progress(flist->used);
2297 char *name = f_name(file, NULL);
2298 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2301 file_total += flist->used;
2302 verbose = save_verbose;
2305 rprintf(FINFO, "received %d names\n", flist->used);
2307 if (show_filelist_p())
2308 finish_filelist_progress(flist);
2310 if (need_unsorted_flist) {
2311 /* Create an extra array of index pointers that we can sort for
2312 * the generator's use (for wading through the files in sorted
2313 * order and for calling flist_find()). We keep the "files"
2314 * list unsorted for our exchange of index numbers with the
2315 * other side (since their names may not sort the same). */
2316 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2317 out_of_memory("recv_file_list");
2318 memcpy(flist->sorted, flist->files,
2319 flist->used * sizeof (struct file_struct*));
2320 if (inc_recurse && dir_flist->used > dstart) {
2321 static int dir_flist_malloced = 0;
2322 if (dir_flist_malloced < dir_flist->malloced) {
2323 dir_flist->sorted = realloc_array(dir_flist->sorted,
2324 struct file_struct *,
2325 dir_flist->malloced);
2326 dir_flist_malloced = dir_flist->malloced;
2328 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2329 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2330 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2333 flist->sorted = flist->files;
2334 if (inc_recurse && dir_flist->used > dstart) {
2335 dir_flist->sorted = dir_flist->files;
2336 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2341 flist_done_allocating(flist);
2343 recv_id_list(f, flist);
2345 flist_sort_and_clean(flist, relative_paths);
2347 if (protocol_version < 30) {
2348 /* Recv the io_error flag */
2352 io_error |= read_int(f);
2353 } else if (inc_recurse && flist->ndx_start == 1) {
2354 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2355 flist->parent_ndx = -1;
2359 output_flist(flist);
2362 rprintf(FINFO, "recv_file_list done\n");
2364 stats.flist_size += stats.total_read - start_read;
2365 stats.num_files += flist->used;
2370 /* This is only used once by the receiver if the very first file-list
2371 * has exactly one item in it. */
2372 void recv_additional_file_list(int f)
2374 struct file_list *flist;
2375 int ndx = read_ndx(f);
2376 if (ndx == NDX_FLIST_EOF) {
2378 change_local_filter_dir(NULL, 0, 0);
2380 ndx = NDX_FLIST_OFFSET - ndx;
2381 if (ndx < 0 || ndx >= dir_flist->used) {
2382 ndx = NDX_FLIST_OFFSET - ndx;
2384 "[%s] Invalid dir index: %d (%d - %d)\n",
2385 who_am_i(), ndx, NDX_FLIST_OFFSET,
2386 NDX_FLIST_OFFSET - dir_flist->used + 1);
2387 exit_cleanup(RERR_PROTOCOL);
2390 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2393 flist = recv_file_list(f);
2394 flist->parent_ndx = ndx;
2398 /* Search for an identically-named item in the file list. Note that the
2399 * items must agree in their directory-ness, or no match is returned. */
2400 int flist_find(struct file_list *flist, struct file_struct *f)
2402 int low = flist->low, high = flist->high;
2403 int diff, mid, mid_up;
2405 while (low <= high) {
2406 mid = (low + high) / 2;
2407 if (F_IS_ACTIVE(flist->sorted[mid]))
2410 /* Scan for the next non-empty entry using the cached
2411 * distance values. If the value isn't fully up-to-
2412 * date, update it. */
2413 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2414 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2416 mid_up += F_DEPTH(flist->sorted[mid_up]);
2417 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2418 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2420 if (mid_up > high) {
2421 /* If there's nothing left above us, set high to
2422 * a non-empty entry below us and continue. */
2423 high = mid - (int)flist->sorted[mid]->len32;
2424 if (!F_IS_ACTIVE(flist->sorted[high])) {
2426 high -= (int)flist->sorted[high]->len32;
2427 } while (!F_IS_ACTIVE(flist->sorted[high]));
2428 flist->sorted[mid]->len32 = mid - high;
2433 diff = f_name_cmp(flist->sorted[mid_up], f);
2435 if (protocol_version < 29
2436 && S_ISDIR(flist->sorted[mid_up]->mode)
2437 != S_ISDIR(f->mode))
2449 /* Search for an identically-named item in the file list. Differs from
2450 * flist_find in that an item that agrees with "f" in directory-ness is
2451 * preferred but one that does not is still found. */
2452 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2457 /* First look for an item that agrees in directory-ness. */
2458 ndx = flist_find(flist, f);
2462 /* Temporarily flip f->mode to look for an item of opposite
2463 * directory-ness. */
2464 save_mode = f->mode;
2465 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2466 ndx = flist_find(flist, f);
2467 f->mode = save_mode;
2472 * Free up any resources a file_struct has allocated
2473 * and clear the file.
2475 void clear_file(struct file_struct *file)
2477 /* The +1 zeros out the first char of the basename. */
2478 memset(file, 0, FILE_STRUCT_LEN + 1);
2479 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2480 * entry. Likewise for len32 in the opposite direction. We assume
2481 * that we're alone for now since flist_find() will adjust the counts
2482 * it runs into that aren't up-to-date. */
2483 file->len32 = F_DEPTH(file) = 1;
2486 /* Allocate a new file list. */
2487 struct file_list *flist_new(int flags, char *msg)
2489 struct file_list *flist;
2491 if (!(flist = new0(struct file_list)))
2494 if (flags & FLIST_TEMP) {
2495 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2496 out_of_memory, POOL_INTERN)))
2499 /* This is a doubly linked list with prev looping back to
2500 * the end of the list, but the last next pointer is NULL. */
2502 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2503 out_of_memory, POOL_INTERN);
2504 if (!flist->file_pool)
2507 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2509 first_flist = cur_flist = flist->prev = flist;
2511 struct file_list *prev = first_flist->prev;
2513 flist->file_pool = first_flist->file_pool;
2515 flist->ndx_start = prev->ndx_start + prev->used + 1;
2516 flist->flist_num = prev->flist_num + 1;
2519 prev->next = first_flist->prev = flist;
2521 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2528 /* Free up all elements in a flist. */
2529 void flist_free(struct file_list *flist)
2532 /* Was FLIST_TEMP dir-list. */
2533 } else if (flist == flist->prev) {
2534 first_flist = cur_flist = NULL;
2538 if (flist == cur_flist)
2539 cur_flist = flist->next;
2540 if (flist == first_flist)
2541 first_flist = first_flist->next;
2543 flist->prev->next = flist->next;
2545 flist->next = first_flist;
2547 flist->next->prev = flist->prev;
2548 file_total -= flist->used;
2552 if (!flist->prev || !flist_cnt)
2553 pool_destroy(flist->file_pool);
2555 pool_free_old(flist->file_pool, flist->pool_boundary);
2557 if (flist->sorted && flist->sorted != flist->files)
2558 free(flist->sorted);
2563 /* This routine ensures we don't have any duplicate names in our file list.
2564 * duplicate names can cause corruption because of the pipelining. */
2565 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2567 char fbuf[MAXPATHLEN];
2572 if (flist->used == 0) {
2578 fsort(flist->sorted, flist->used);
2580 if (!am_sender || inc_recurse) {
2581 for (i = prev_i = 0; i < flist->used; i++) {
2582 if (F_IS_ACTIVE(flist->sorted[i])) {
2587 flist->low = prev_i;
2589 i = prev_i = flist->used - 1;
2593 while (++i < flist->used) {
2595 struct file_struct *file = flist->sorted[i];
2597 if (!F_IS_ACTIVE(file))
2599 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2601 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2602 int save_mode = file->mode;
2603 /* Make sure that this directory doesn't duplicate a
2604 * non-directory earlier in the list. */
2605 flist->high = prev_i;
2606 file->mode = S_IFREG;
2607 j = flist_find(flist, file);
2608 file->mode = save_mode;
2613 /* If one is a dir and the other is not, we want to
2614 * keep the dir because it might have contents in the
2615 * list. Otherwise keep the first one. */
2616 if (S_ISDIR(file->mode)) {
2617 struct file_struct *fp = flist->sorted[j];
2618 if (!S_ISDIR(fp->mode))
2622 file->flags |= FLAG_DUPLICATE;
2623 else { /* Make sure we merge our vital flags. */
2624 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2625 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2635 "removing duplicate name %s from file list (%d)\n",
2636 f_name(file, fbuf), drop + flist->ndx_start);
2638 clear_file(flist->sorted[drop]);
2642 if (flist->low == drop) {
2644 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2653 flist->high = prev_i;
2656 /* We need to strip off the leading slashes for relative
2657 * paths, but this must be done _after_ the sorting phase. */
2658 for (i = flist->low; i <= flist->high; i++) {
2659 struct file_struct *file = flist->sorted[i];
2663 while (*file->dirname == '/')
2665 if (!*file->dirname)
2666 file->dirname = NULL;
2670 if (prune_empty_dirs && !am_sender) {
2671 int j, prev_depth = 0;
2673 prev_i = 0; /* It's OK that this isn't really true. */
2675 for (i = flist->low; i <= flist->high; i++) {
2676 struct file_struct *fp, *file = flist->sorted[i];
2678 /* This temporarily abuses the F_DEPTH() value for a
2679 * directory that is in a chain that might get pruned.
2680 * We restore the old value if it gets a reprieve. */
2681 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2682 /* Dump empty dirs when coming back down. */
2683 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2684 fp = flist->sorted[prev_i];
2685 if (F_DEPTH(fp) >= 0)
2687 prev_i = -F_DEPTH(fp)-1;
2690 prev_depth = F_DEPTH(file);
2691 if (is_excluded(f_name(file, fbuf), 1,
2693 /* Keep dirs through this dir. */
2694 for (j = prev_depth-1; ; j--) {
2695 fp = flist->sorted[prev_i];
2696 if (F_DEPTH(fp) >= 0)
2698 prev_i = -F_DEPTH(fp)-1;
2702 F_DEPTH(file) = -prev_i-1;
2705 /* Keep dirs through this non-dir. */
2706 for (j = prev_depth; ; j--) {
2707 fp = flist->sorted[prev_i];
2708 if (F_DEPTH(fp) >= 0)
2710 prev_i = -F_DEPTH(fp)-1;
2715 /* Dump all remaining empty dirs. */
2717 struct file_struct *fp = flist->sorted[prev_i];
2718 if (F_DEPTH(fp) >= 0)
2720 prev_i = -F_DEPTH(fp)-1;
2724 for (i = flist->low; i <= flist->high; i++) {
2725 if (F_IS_ACTIVE(flist->sorted[i]))
2729 for (i = flist->high; i >= flist->low; i--) {
2730 if (F_IS_ACTIVE(flist->sorted[i]))
2737 static void output_flist(struct file_list *flist)
2739 char uidbuf[16], gidbuf[16], depthbuf[16];
2740 struct file_struct *file;
2741 const char *root, *dir, *slash, *name, *trail;
2742 const char *who = who_am_i();
2745 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2746 who, flist->ndx_start, flist->used, flist->low, flist->high);
2747 for (i = 0; i < flist->used; i++) {
2748 file = flist->files[i];
2749 if ((am_root || am_sender) && uid_ndx) {
2750 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2755 static char parens[] = "(\0)\0\0\0";
2756 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2757 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2758 pp, F_GROUP(file), pp + 2);
2762 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2763 if (F_IS_ACTIVE(file)) {
2764 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2765 if ((dir = file->dirname) == NULL)
2769 name = file->basename;
2770 trail = S_ISDIR(file->mode) ? "/" : "";
2772 root = dir = slash = name = trail = "";
2774 "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2775 who, i + flist->ndx_start,
2776 root, dir, slash, name, trail,
2777 (int)file->mode, (double)F_LENGTH(file),
2778 uidbuf, gidbuf, file->flags);
2782 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2783 enum fnc_type { t_PATH, t_ITEM };
2785 static int found_prefix;
2787 /* Compare the names of two file_struct entities, similar to how strcmp()
2788 * would do if it were operating on the joined strings.
2790 * Some differences beginning with protocol_version 29: (1) directory names
2791 * are compared with an assumed trailing slash so that they compare in a
2792 * way that would cause them to sort immediately prior to any content they
2793 * may have; (2) a directory of any name compares after a non-directory of
2794 * any name at the same depth; (3) a directory with name "." compares prior
2795 * to anything else. These changes mean that a directory and a non-dir
2796 * with the same name will not compare as equal (protocol_version >= 29).
2798 * The dirname component can be an empty string, but the basename component
2799 * cannot (and never is in the current codebase). The basename component
2800 * may be NULL (for a removed item), in which case it is considered to be
2801 * after any existing item. */
2802 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2805 const uchar *c1, *c2;
2806 enum fnc_state state1, state2;
2807 enum fnc_type type1, type2;
2808 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2810 if (!f1 || !F_IS_ACTIVE(f1)) {
2811 if (!f2 || !F_IS_ACTIVE(f2))
2815 if (!f2 || !F_IS_ACTIVE(f2))
2818 c1 = (uchar*)f1->dirname;
2819 c2 = (uchar*)f2->dirname;
2823 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2824 c1 = (const uchar*)f1->basename;
2825 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2827 state1 = s_TRAILING;
2836 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2837 c2 = (const uchar*)f2->basename;
2838 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2840 state2 = s_TRAILING;
2850 return type1 == t_PATH ? 1 : -1;
2860 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2861 c1 = (const uchar*)f1->basename;
2862 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2864 state1 = s_TRAILING;
2870 state1 = s_TRAILING;
2871 if (type1 == t_PATH) {
2880 if (*c2 && type1 != type2)
2881 return type1 == t_PATH ? 1 : -1;
2890 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2891 c2 = (const uchar*)f2->basename;
2892 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2894 state2 = s_TRAILING;
2900 state2 = s_TRAILING;
2901 if (type2 == t_PATH) {
2914 return type1 == t_PATH ? 1 : -1;
2916 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2921 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
2922 * not match if f2's basename is not an exact match of a path element in f1.
2923 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
2924 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
2928 return found_prefix;
2931 char *f_name_buf(void)
2933 static char names[5][MAXPATHLEN];
2934 static unsigned int n;
2936 n = (n + 1) % (sizeof names / sizeof names[0]);
2941 /* Return a copy of the full filename of a flist entry, using the indicated
2942 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
2943 * done because we checked the size when creating the file_struct entry.
2945 char *f_name(const struct file_struct *f, char *fbuf)
2947 if (!f || !F_IS_ACTIVE(f))
2951 fbuf = f_name_buf();
2954 int len = strlen(f->dirname);
2955 memcpy(fbuf, f->dirname, len);
2957 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
2959 strlcpy(fbuf, f->basename, MAXPATHLEN);
2964 /* Do a non-recursive scan of the named directory, possibly ignoring all
2965 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
2966 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
2967 * buffer (the functions we call will append names onto the end, but the old
2968 * dir value will be restored on exit). */
2969 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
2971 struct file_list *dirlist;
2972 char dirbuf[MAXPATHLEN];
2973 int save_recurse = recurse;
2974 int save_xfer_dirs = xfer_dirs;
2975 int save_prune_empty_dirs = prune_empty_dirs;
2978 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
2979 if (dlen >= MAXPATHLEN)
2984 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
2988 send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, 0);
2989 xfer_dirs = save_xfer_dirs;
2990 recurse = save_recurse;
2992 flist_count_offset += dirlist->used;
2994 prune_empty_dirs = 0;
2995 dirlist->sorted = dirlist->files;
2996 flist_sort_and_clean(dirlist, 0);
2997 prune_empty_dirs = save_prune_empty_dirs;
3000 output_flist(dirlist);