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 preserve_uid;
47 extern int preserve_gid;
48 extern int preserve_acls;
49 extern int preserve_xattrs;
50 extern int preserve_links;
51 extern int preserve_hard_links;
52 extern int preserve_devices;
53 extern int preserve_specials;
54 extern int delete_during;
56 extern int relative_paths;
57 extern int implied_dirs;
58 extern int ignore_perishable;
59 extern int non_perishable_cnt;
60 extern int prune_empty_dirs;
61 extern int copy_links;
62 extern int copy_unsafe_links;
63 extern int protocol_version;
64 extern int sanitize_paths;
65 extern int munge_symlinks;
66 extern int use_safe_inc_flist;
67 extern int need_unsorted_flist;
68 extern int sender_symlink_iconv;
69 extern int unsort_ndx;
71 extern struct stats stats;
72 extern char *filesfrom_host;
74 extern char curr_dir[MAXPATHLEN];
76 extern struct chmod_mode_struct *chmod_modes;
78 extern struct filter_list_struct filter_list;
79 extern struct filter_list_struct daemon_filter_list;
82 extern int filesfrom_convert;
83 extern iconv_t ic_send, ic_recv;
86 #define PTR_SIZE (sizeof (struct file_struct *))
90 dev_t filesystem_dev; /* used to implement -x */
92 struct file_list *cur_flist, *first_flist, *dir_flist;
93 int send_dir_ndx = -1, send_dir_depth = -1;
94 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
95 int file_total = 0; /* total of all active items over all file-lists */
96 int flist_eof = 0; /* all the file-lists are now known */
99 #define SLASH_ENDING_NAME 1
100 #define DOTDIR_NAME 2
102 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
103 * internally, even if this platform does not allow files to have 64-bit inums.
104 * The only exception is if we're on a platform with no 64-bit type at all.
106 * Because we use read_longint() to get these off the wire, if you transfer
107 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
108 * machine with no 64-bit types then you will get an overflow error.
110 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
111 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
112 * be truncated. But it's a kind of silly thing to do anyhow. */
114 /* The tmp_* vars are used as a cache area by make_file() to store data
115 * that the sender doesn't need to remember in its file list. The data
116 * will survive just long enough to be used by send_file_entry(). */
117 static dev_t tmp_rdev;
118 #ifdef SUPPORT_HARD_LINKS
119 static int64 tmp_dev = -1, tmp_ino;
121 static char tmp_sum[MAX_DIGEST_LEN];
123 static char empty_sum[MAX_DIGEST_LEN];
124 static int flist_count_offset; /* for --delete --progress */
125 static int dir_count = 0;
127 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
128 static void output_flist(struct file_list *flist);
130 void init_flist(void)
133 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
134 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
136 checksum_len = protocol_version < 21 ? 2
137 : protocol_version < 30 ? MD4_DIGEST_LEN
141 static int show_filelist_p(void)
143 return verbose && xfer_dirs && !am_server && !inc_recurse;
146 static void start_filelist_progress(char *kind)
148 rprintf(FCLIENT, "%s ... ", kind);
149 if (verbose > 1 || do_progress)
150 rprintf(FCLIENT, "\n");
154 static void emit_filelist_progress(int count)
156 rprintf(FCLIENT, " %d files...\r", count);
159 static void maybe_emit_filelist_progress(int count)
161 if (do_progress && show_filelist_p() && (count % 100) == 0)
162 emit_filelist_progress(count);
165 static void finish_filelist_progress(const struct file_list *flist)
168 /* This overwrites the progress line */
169 rprintf(FINFO, "%d file%sto consider\n",
170 flist->used, flist->used == 1 ? " " : "s ");
172 rprintf(FINFO, "done\n");
175 void show_flist_stats(void)
180 /* Stat either a symlink or its referent, depending on the settings of
181 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
183 * If path is the name of a symlink, then the linkbuf buffer (which must hold
184 * MAXPATHLEN chars) will be set to the symlink's target string.
186 * The stat structure pointed to by stp will contain information about the
187 * link or the referent as appropriate, if they exist. */
188 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
191 if (link_stat(path, stp, copy_dirlinks) < 0)
193 if (S_ISLNK(stp->st_mode)) {
194 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
197 linkbuf[llen] = '\0';
198 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
200 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
203 return x_stat(path, stp, NULL);
205 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
206 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
207 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
208 llen - SYMLINK_PREFIX_LEN + 1);
213 return x_stat(path, stp, NULL);
217 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
221 return x_stat(path, stp, NULL);
222 if (x_lstat(path, stp, NULL) < 0)
224 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
226 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
231 return x_stat(path, stp, NULL);
235 static inline int is_daemon_excluded(const char *fname, int is_dir)
237 if (daemon_filter_list.head
238 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
245 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
247 if (daemon_filter_list.head) {
250 while ((slash = strchr(slash+1, '/')) != NULL) {
253 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
262 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
271 /* This function is used to check if a file should be included/excluded
272 * from the list of files based on its name and type etc. The value of
273 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
274 static int is_excluded(const char *fname, int is_dir, int filter_level)
276 #if 0 /* This currently never happens, so avoid a useless compare. */
277 if (filter_level == NO_FILTERS)
280 if (is_daemon_excluded(fname, is_dir))
282 if (filter_level != ALL_FILTERS)
285 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
290 static void send_directory(int f, struct file_list *flist,
291 char *fbuf, int len, int flags);
293 static const char *pathname, *orig_dir;
294 static int pathname_len;
296 /* Make sure flist can hold at least flist->used + extra entries. */
297 static void flist_expand(struct file_list *flist, int extra)
299 struct file_struct **new_ptr;
301 if (flist->used + extra <= flist->malloced)
304 if (flist->malloced < FLIST_START)
305 flist->malloced = FLIST_START;
306 else if (flist->malloced >= FLIST_LINEAR)
307 flist->malloced += FLIST_LINEAR;
309 flist->malloced *= 2;
311 /* In case count jumped or we are starting the list
312 * with a known size just set it. */
313 if (flist->malloced < flist->used + extra)
314 flist->malloced = flist->used + extra;
316 new_ptr = realloc_array(flist->files, struct file_struct *,
319 if (verbose >= 2 && flist->malloced != FLIST_START) {
320 rprintf(FCLIENT, "[%s] expand file_list pointer array to %.0f bytes, did%s move\n",
322 (double)sizeof flist->files[0] * flist->malloced,
323 (new_ptr == flist->files) ? " not" : "");
326 flist->files = new_ptr;
329 out_of_memory("flist_expand");
332 static void flist_done_allocating(struct file_list *flist)
334 void *ptr = pool_boundary(flist->file_pool, 8*1024);
335 if (flist->pool_boundary == ptr)
336 flist->pool_boundary = NULL; /* list didn't use any pool memory */
338 flist->pool_boundary = ptr;
341 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
342 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
343 * with dir == NULL taken to be the starting directory, and dirlen < 0
344 * indicating that strdup(dir) should be called and then the -dirlen length
345 * value checked to ensure that it is not daemon-excluded. */
346 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
349 char *cpy = strdup(dir);
351 change_dir(orig_dir, CD_SKIP_CHDIR);
352 if (path_is_daemon_excluded(cpy, 0))
358 if (pathname == F_PATHNAME(file))
360 dir = F_PATHNAME(file);
362 dirlen = strlen(dir);
363 } else if (pathname == dir)
365 if (dir && *dir != '/')
366 change_dir(orig_dir, CD_SKIP_CHDIR);
370 pathname_len = dirlen;
375 if (!change_dir(dir, CD_NORMAL)) {
377 io_error |= IOERR_GENERAL;
378 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
380 change_dir(orig_dir, CD_NORMAL);
389 static void send_file_entry(int f, const char *fname, struct file_struct *file,
391 const char *symlink_name, int symlink_len,
393 int ndx, int first_ndx)
395 static time_t modtime;
397 #ifdef SUPPORT_HARD_LINKS
401 static uint32 rdev_major;
404 static const char *user_name, *group_name;
405 static char lastname[MAXPATHLEN];
406 int first_hlink_ndx = -1;
410 /* Initialize starting value of xflags. */
411 if (protocol_version >= 30 && S_ISDIR(file->mode)) {
413 if (file->flags & FLAG_CONTENT_DIR)
414 xflags = file->flags & FLAG_TOP_DIR;
415 else if (file->flags & FLAG_IMPLIED_DIR)
416 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
418 xflags = XMIT_NO_CONTENT_DIR;
420 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
422 if (file->mode == mode)
423 xflags |= XMIT_SAME_MODE;
427 if (preserve_devices && IS_DEVICE(mode)) {
428 if (protocol_version < 28) {
429 if (tmp_rdev == rdev)
430 xflags |= XMIT_SAME_RDEV_pre28;
435 if ((uint32)major(rdev) == rdev_major)
436 xflags |= XMIT_SAME_RDEV_MAJOR;
438 rdev_major = major(rdev);
439 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
440 xflags |= XMIT_RDEV_MINOR_8_pre30;
442 } else if (preserve_specials && IS_SPECIAL(mode)) {
443 /* Special files don't need an rdev number, so just make
444 * the historical transmission of the value efficient. */
445 if (protocol_version < 28)
446 xflags |= XMIT_SAME_RDEV_pre28;
448 rdev = MAKEDEV(major(rdev), 0);
449 xflags |= XMIT_SAME_RDEV_MAJOR;
450 if (protocol_version < 30)
451 xflags |= XMIT_RDEV_MINOR_8_pre30;
453 } else if (protocol_version < 28)
454 rdev = MAKEDEV(0, 0);
455 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
456 xflags |= XMIT_SAME_UID;
460 user_name = add_uid(uid);
461 if (inc_recurse && user_name)
462 xflags |= XMIT_USER_NAME_FOLLOWS;
465 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
466 xflags |= XMIT_SAME_GID;
470 group_name = add_gid(gid);
471 if (inc_recurse && group_name)
472 xflags |= XMIT_GROUP_NAME_FOLLOWS;
475 if (file->modtime == modtime)
476 xflags |= XMIT_SAME_TIME;
478 modtime = file->modtime;
480 #ifdef SUPPORT_HARD_LINKS
482 if (protocol_version >= 30) {
483 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
484 first_hlink_ndx = (int32)(long)np->data - 1;
485 if (first_hlink_ndx < 0) {
486 np->data = (void*)(long)(first_ndx + ndx + 1);
487 xflags |= XMIT_HLINK_FIRST;
490 if (tmp_dev == dev) {
491 if (protocol_version >= 28)
492 xflags |= XMIT_SAME_DEV_pre30;
496 xflags |= XMIT_HLINKED;
501 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
503 l2 = strlen(fname+l1);
506 xflags |= XMIT_SAME_NAME;
508 xflags |= XMIT_LONG_NAME;
510 /* We must make sure we don't send a zero flag byte or the
511 * other end will terminate the flist transfer. Note that
512 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
513 * it's harmless way to add a bit to the first flag byte. */
514 if (protocol_version >= 28) {
515 if (!xflags && !S_ISDIR(mode))
516 xflags |= XMIT_TOP_DIR;
517 if ((xflags & 0xFF00) || !xflags) {
518 xflags |= XMIT_EXTENDED_FLAGS;
519 write_shortint(f, xflags);
521 write_byte(f, xflags);
523 if (!(xflags & 0xFF))
524 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
525 write_byte(f, xflags);
527 if (xflags & XMIT_SAME_NAME)
529 if (xflags & XMIT_LONG_NAME)
530 write_varint30(f, l2);
533 write_buf(f, fname + l1, l2);
535 if (first_hlink_ndx >= 0) {
536 write_varint(f, first_hlink_ndx);
537 if (first_hlink_ndx >= first_ndx)
541 write_varlong30(f, F_LENGTH(file), 3);
542 if (!(xflags & XMIT_SAME_TIME)) {
543 if (protocol_version >= 30)
544 write_varlong(f, modtime, 4);
546 write_int(f, modtime);
548 if (!(xflags & XMIT_SAME_MODE))
549 write_int(f, to_wire_mode(mode));
550 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
551 if (protocol_version < 30)
554 write_varint(f, uid);
555 if (xflags & XMIT_USER_NAME_FOLLOWS) {
556 int len = strlen(user_name);
558 write_buf(f, user_name, len);
562 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
563 if (protocol_version < 30)
566 write_varint(f, gid);
567 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
568 int len = strlen(group_name);
570 write_buf(f, group_name, len);
574 if ((preserve_devices && IS_DEVICE(mode))
575 || (preserve_specials && IS_SPECIAL(mode))) {
576 if (protocol_version < 28) {
577 if (!(xflags & XMIT_SAME_RDEV_pre28))
578 write_int(f, (int)rdev);
580 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
581 write_varint30(f, major(rdev));
582 if (protocol_version >= 30)
583 write_varint(f, minor(rdev));
584 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
585 write_byte(f, minor(rdev));
587 write_int(f, minor(rdev));
593 write_varint30(f, symlink_len);
594 write_buf(f, symlink_name, symlink_len);
598 #ifdef SUPPORT_HARD_LINKS
599 if (tmp_dev != -1 && protocol_version < 30) {
600 /* Older protocols expect the dev number to be transmitted
601 * 1-incremented so that it is never zero. */
602 if (protocol_version < 26) {
603 /* 32-bit dev_t and ino_t */
604 write_int(f, (int32)(dev+1));
605 write_int(f, (int32)tmp_ino);
607 /* 64-bit dev_t and ino_t */
608 if (!(xflags & XMIT_SAME_DEV_pre30))
609 write_longint(f, dev+1);
610 write_longint(f, tmp_ino);
615 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
620 /* Prior to 28, we sent a useless set of nulls. */
623 write_buf(f, sum, checksum_len);
627 strlcpy(lastname, fname, MAXPATHLEN);
629 if (S_ISREG(mode) || S_ISLNK(mode))
630 stats.total_size += F_LENGTH(file);
633 static struct file_struct *recv_file_entry(int f, struct file_list *flist, int xflags)
635 static int64 modtime;
637 #ifdef SUPPORT_HARD_LINKS
641 static uint32 rdev_major;
644 static uint16 gid_flags;
645 static char lastname[MAXPATHLEN], *lastdir;
646 static int lastdir_depth, lastdir_len = -1;
647 static unsigned int del_hier_name_len = 0;
648 static int in_del_hier = 0;
649 char thisname[MAXPATHLEN];
650 unsigned int l1 = 0, l2 = 0;
651 int alloc_len, basename_len, linkname_len;
652 int extra_len = file_extra_cnt * EXTRA_LEN;
653 int first_hlink_ndx = -1;
655 const char *basename;
656 struct file_struct *file;
660 if (xflags & XMIT_SAME_NAME)
663 if (xflags & XMIT_LONG_NAME)
664 l2 = read_varint30(f);
668 if (l2 >= MAXPATHLEN - l1) {
670 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
671 xflags, l1, l2, lastname, who_am_i());
672 overflow_exit("recv_file_entry");
675 strlcpy(thisname, lastname, l1 + 1);
676 read_sbuf(f, &thisname[l1], l2);
677 thisname[l1 + l2] = 0;
679 /* Abuse basename_len for a moment... */
680 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
683 if (ic_recv != (iconv_t)-1) {
686 INIT_CONST_XBUF(outbuf, thisname);
687 INIT_XBUF(inbuf, lastname, basename_len, -1);
689 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
690 io_error |= IOERR_GENERAL;
692 "[%s] cannot convert filename: %s (%s)\n",
693 who_am_i(), lastname, strerror(errno));
696 thisname[outbuf.len] = '\0';
701 clean_fname(thisname, 0);
704 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
706 if ((basename = strrchr(thisname, '/')) != NULL) {
707 int len = basename++ - thisname;
708 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
709 lastdir = new_array(char, len + 1);
710 memcpy(lastdir, thisname, len);
713 lastdir_depth = count_dir_elements(lastdir);
717 basename_len = strlen(basename) + 1; /* count the '\0' */
719 #ifdef SUPPORT_HARD_LINKS
720 if (protocol_version >= 30
721 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
722 first_hlink_ndx = read_varint(f);
723 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
725 "hard-link reference out of range: %d (%d)\n",
726 first_hlink_ndx, flist->ndx_start + flist->used);
727 exit_cleanup(RERR_PROTOCOL);
729 if (first_hlink_ndx >= flist->ndx_start) {
730 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
731 file_length = F_LENGTH(first);
732 modtime = first->modtime;
735 uid = F_OWNER(first);
737 gid = F_GROUP(first);
738 if (preserve_devices && IS_DEVICE(mode)) {
739 uint32 *devp = F_RDEV_P(first);
740 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
741 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
743 if (preserve_links && S_ISLNK(mode))
744 linkname_len = strlen(F_SYMLINK(first)) + 1;
752 file_length = read_varlong30(f, 3);
753 if (!(xflags & XMIT_SAME_TIME)) {
754 if (protocol_version >= 30) {
755 modtime = read_varlong(f, 4);
756 #if SIZEOF_TIME_T < SIZEOF_INT64
757 if (!am_generator && (int64)(time_t)modtime != modtime) {
759 "Time value of %s truncated on receiver.\n",
764 modtime = read_int(f);
766 if (!(xflags & XMIT_SAME_MODE))
767 mode = from_wire_mode(read_int(f));
769 if (chmod_modes && !S_ISLNK(mode))
770 mode = tweak_mode(mode, chmod_modes);
772 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
773 if (protocol_version < 30)
774 uid = (uid_t)read_int(f);
776 uid = (uid_t)read_varint(f);
777 if (xflags & XMIT_USER_NAME_FOLLOWS)
778 uid = recv_user_name(f, uid);
779 else if (inc_recurse && am_root && !numeric_ids)
780 uid = match_uid(uid);
783 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
784 if (protocol_version < 30)
785 gid = (gid_t)read_int(f);
787 gid = (gid_t)read_varint(f);
789 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
790 gid = recv_group_name(f, gid, &gid_flags);
791 else if (inc_recurse && (!am_root || !numeric_ids))
792 gid = match_gid(gid, &gid_flags);
796 if ((preserve_devices && IS_DEVICE(mode))
797 || (preserve_specials && IS_SPECIAL(mode))) {
798 if (protocol_version < 28) {
799 if (!(xflags & XMIT_SAME_RDEV_pre28))
800 rdev = (dev_t)read_int(f);
803 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
804 rdev_major = read_varint30(f);
805 if (protocol_version >= 30)
806 rdev_minor = read_varint(f);
807 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
808 rdev_minor = read_byte(f);
810 rdev_minor = read_int(f);
811 rdev = MAKEDEV(rdev_major, rdev_minor);
814 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
816 } else if (protocol_version < 28)
817 rdev = MAKEDEV(0, 0);
820 if (preserve_links && S_ISLNK(mode)) {
821 linkname_len = read_varint30(f) + 1; /* count the '\0' */
822 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
823 rprintf(FERROR, "overflow: linkname_len=%d\n",
825 overflow_exit("recv_file_entry");
828 /* We don't know how much extra room we need to convert
829 * the as-yet-unread symlink data, so let's hope that a
830 * double-size buffer is plenty. */
831 if (sender_symlink_iconv)
835 linkname_len += SYMLINK_PREFIX_LEN;
841 #ifdef SUPPORT_HARD_LINKS
843 if (preserve_hard_links) {
844 if (protocol_version < 28 && S_ISREG(mode))
845 xflags |= XMIT_HLINKED;
846 if (xflags & XMIT_HLINKED)
847 extra_len += (inc_recurse+1) * EXTRA_LEN;
852 /* Directories need an extra int32 for the default ACL. */
853 if (preserve_acls && S_ISDIR(mode))
854 extra_len += EXTRA_LEN;
857 if (always_checksum && S_ISREG(mode))
858 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
860 #if SIZEOF_INT64 >= 8
861 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
862 extra_len += EXTRA_LEN;
864 if (file_length < 0) {
865 rprintf(FERROR, "Offset underflow: file-length is negative\n");
866 exit_cleanup(RERR_UNSUPPORTED);
869 if (inc_recurse && S_ISDIR(mode)) {
870 if (one_file_system) {
871 /* Room to save the dir's device for -x */
872 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
874 pool = dir_flist->file_pool;
876 pool = flist->file_pool;
878 #if EXTRA_ROUNDING > 0
879 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
880 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
883 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
885 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
887 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
889 file = (struct file_struct *)bp;
890 bp += FILE_STRUCT_LEN;
892 memcpy(bp, basename, basename_len);
894 #ifdef SUPPORT_HARD_LINKS
895 if (xflags & XMIT_HLINKED)
896 file->flags |= FLAG_HLINKED;
898 file->modtime = (time_t)modtime;
899 file->len32 = (uint32)file_length;
900 #if SIZEOF_INT64 >= 8
901 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
902 #if SIZEOF_CAPITAL_OFF_T < 8
903 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
904 exit_cleanup(RERR_UNSUPPORTED);
906 file->flags |= FLAG_LENGTH64;
907 OPT_EXTRA(file, 0)->unum = (uint32)(file_length >> 32);
916 file->flags |= gid_flags;
919 F_NDX(file) = flist->used + flist->ndx_start;
921 if (basename != thisname) {
922 file->dirname = lastdir;
923 F_DEPTH(file) = lastdir_depth + 1;
928 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
930 if (protocol_version >= 30) {
931 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
932 if (xflags & XMIT_TOP_DIR)
933 file->flags |= FLAG_TOP_DIR;
934 file->flags |= FLAG_CONTENT_DIR;
935 } else if (xflags & XMIT_TOP_DIR)
936 file->flags |= FLAG_IMPLIED_DIR;
937 } else if (xflags & XMIT_TOP_DIR) {
938 in_del_hier = recurse;
939 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
940 if (relative_paths && del_hier_name_len > 2
941 && lastname[del_hier_name_len-1] == '.'
942 && lastname[del_hier_name_len-2] == '/')
943 del_hier_name_len -= 2;
944 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
945 } else if (in_del_hier) {
946 if (!relative_paths || !del_hier_name_len
947 || (l1 >= del_hier_name_len
948 && lastname[del_hier_name_len] == '/'))
949 file->flags |= FLAG_CONTENT_DIR;
955 if (preserve_devices && IS_DEVICE(mode)) {
956 uint32 *devp = F_RDEV_P(file);
957 DEV_MAJOR(devp) = major(rdev);
958 DEV_MINOR(devp) = minor(rdev);
964 if (first_hlink_ndx >= flist->ndx_start) {
965 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
966 memcpy(bp, F_SYMLINK(first), linkname_len);
968 if (munge_symlinks) {
969 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
970 bp += SYMLINK_PREFIX_LEN;
971 linkname_len -= SYMLINK_PREFIX_LEN;
974 if (sender_symlink_iconv) {
977 alloc_len = linkname_len;
980 /* Read the symlink data into the end of our double-sized
981 * buffer and then convert it into the right spot. */
982 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
983 linkname_len - 1, (size_t)-1);
984 read_sbuf(f, inbuf.buf, inbuf.len);
985 INIT_XBUF(outbuf, bp, 0, alloc_len);
987 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
988 io_error |= IOERR_GENERAL;
990 "[%s] cannot convert symlink data for: %s (%s)\n",
991 who_am_i(), full_fname(thisname), strerror(errno));
992 bp = (char*)file->basename;
996 bp[outbuf.len] = '\0';
999 read_sbuf(f, bp, linkname_len - 1);
1000 if (sanitize_paths && !munge_symlinks && *bp)
1001 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1006 #ifdef SUPPORT_HARD_LINKS
1007 if (preserve_hard_links && xflags & XMIT_HLINKED) {
1008 if (protocol_version >= 30) {
1009 if (xflags & XMIT_HLINK_FIRST) {
1010 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1012 F_HL_GNUM(file) = first_hlink_ndx;
1014 static int32 cnt = 0;
1015 struct ht_int64_node *np;
1018 if (protocol_version < 26) {
1022 if (!(xflags & XMIT_SAME_DEV_pre30))
1023 dev = read_longint(f);
1024 ino = read_longint(f);
1026 np = idev_find(dev, ino);
1027 ndx = (int32)(long)np->data - 1;
1030 np->data = (void*)(long)cnt;
1032 F_HL_GNUM(file) = ndx;
1037 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1041 /* Prior to 28, we get a useless set of nulls. */
1044 if (first_hlink_ndx >= flist->ndx_start) {
1045 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1046 memcpy(bp, F_SUM(first), checksum_len);
1048 read_buf(f, bp, checksum_len);
1052 if (preserve_acls && !S_ISLNK(mode))
1053 receive_acl(f, file);
1055 #ifdef SUPPORT_XATTRS
1056 if (preserve_xattrs)
1057 receive_xattr(f, file);
1060 if (S_ISREG(mode) || S_ISLNK(mode))
1061 stats.total_size += file_length;
1066 /* Create a file_struct for a named file by reading its stat() information
1067 * and performing extensive checks against global options.
1069 * Returns a pointer to the new file struct, or NULL if there was an error
1070 * or this file should be excluded.
1072 * Note: Any error (here or in send_file_name) that results in the omission of
1073 * an existent source file from the file list should set
1074 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1075 * destination if --delete is on. */
1076 struct file_struct *make_file(const char *fname, struct file_list *flist,
1077 STRUCT_STAT *stp, int flags, int filter_level)
1079 static char *lastdir;
1080 static int lastdir_len = -1;
1081 struct file_struct *file;
1082 char thisname[MAXPATHLEN];
1083 char linkname[MAXPATHLEN];
1084 int alloc_len, basename_len, linkname_len;
1085 int extra_len = file_extra_cnt * EXTRA_LEN;
1086 const char *basename;
1091 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1092 io_error |= IOERR_GENERAL;
1093 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1096 clean_fname(thisname, 0);
1098 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1100 if (stp && S_ISDIR(stp->st_mode)) {
1101 st = *stp; /* Needed for "symlink/." with --relative. */
1102 *linkname = '\0'; /* make IBM code checker happy */
1103 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1104 int save_errno = errno;
1105 /* See if file is excluded before reporting an error. */
1106 if (filter_level != NO_FILTERS
1107 && (is_excluded(thisname, 0, filter_level)
1108 || is_excluded(thisname, 1, filter_level))) {
1109 if (ignore_perishable && save_errno != ENOENT)
1110 non_perishable_cnt++;
1113 if (save_errno == ENOENT) {
1114 #ifdef SUPPORT_LINKS
1115 /* When our options tell us to follow a symlink that
1116 * points nowhere, tell the user about the symlink
1117 * instead of giving a "vanished" message. We only
1118 * dereference a symlink if one of the --copy*links
1119 * options was specified, so there's no need for the
1120 * extra lstat() if one of these options isn't on. */
1121 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1122 && x_lstat(thisname, &st, NULL) == 0
1123 && S_ISLNK(st.st_mode)) {
1124 io_error |= IOERR_GENERAL;
1125 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1126 full_fname(thisname));
1130 enum logcode c = am_daemon && protocol_version < 28
1131 ? FERROR : FWARNING;
1132 io_error |= IOERR_VANISHED;
1133 rprintf(c, "file has vanished: %s\n",
1134 full_fname(thisname));
1137 io_error |= IOERR_GENERAL;
1138 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1139 full_fname(thisname));
1144 if (filter_level == NO_FILTERS)
1147 if (S_ISDIR(st.st_mode)) {
1149 rprintf(FINFO, "skipping directory %s\n", thisname);
1152 /* -x only affects dirs because we need to avoid recursing
1153 * into a mount-point directory, not to avoid copying a
1154 * symlinked file if -L (or similar) was specified. */
1155 if (one_file_system && st.st_dev != filesystem_dev
1156 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1157 if (one_file_system > 1) {
1160 "[%s] skipping mount-point dir %s\n",
1161 who_am_i(), thisname);
1165 flags |= FLAG_MOUNT_DIR;
1166 flags &= ~FLAG_CONTENT_DIR;
1169 flags &= ~FLAG_CONTENT_DIR;
1171 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1172 if (ignore_perishable)
1173 non_perishable_cnt++;
1177 if (lp_ignore_nonreadable(module_id)) {
1178 #ifdef SUPPORT_LINKS
1179 if (!S_ISLNK(st.st_mode))
1181 if (access(thisname, R_OK) != 0)
1187 /* Only divert a directory in the main transfer. */
1189 if (flist->prev && S_ISDIR(st.st_mode)
1190 && flags & FLAG_DIVERT_DIRS) {
1191 /* Room for parent/sibling/next-child info. */
1192 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1194 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1195 pool = dir_flist->file_pool;
1197 pool = flist->file_pool;
1200 /* Directories need an extra int32 for the default ACL. */
1201 if (preserve_acls && S_ISDIR(st.st_mode))
1202 extra_len += EXTRA_LEN;
1208 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1209 who_am_i(), thisname, filter_level);
1212 if ((basename = strrchr(thisname, '/')) != NULL) {
1213 int len = basename++ - thisname;
1214 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1215 lastdir = new_array(char, len + 1);
1216 memcpy(lastdir, thisname, len);
1217 lastdir[len] = '\0';
1221 basename = thisname;
1222 basename_len = strlen(basename) + 1; /* count the '\0' */
1224 #ifdef SUPPORT_LINKS
1225 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1230 #if SIZEOF_CAPITAL_OFF_T >= 8
1231 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1232 extra_len += EXTRA_LEN;
1235 #if EXTRA_ROUNDING > 0
1236 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1237 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1240 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1243 bp = pool_alloc(pool, alloc_len, "make_file");
1245 if (!(bp = new_array(char, alloc_len)))
1246 out_of_memory("make_file");
1249 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1251 file = (struct file_struct *)bp;
1252 bp += FILE_STRUCT_LEN;
1254 memcpy(bp, basename, basename_len);
1256 #ifdef SUPPORT_HARD_LINKS
1257 if (preserve_hard_links && flist && flist->prev) {
1258 if (protocol_version >= 28
1259 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1260 : S_ISREG(st.st_mode)) {
1261 tmp_dev = (int64)st.st_dev;
1262 tmp_ino = (int64)st.st_ino;
1268 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1269 if (IS_DEVICE(st.st_mode)) {
1270 tmp_rdev = st.st_rdev;
1272 } else if (IS_SPECIAL(st.st_mode))
1276 file->flags = flags;
1277 file->modtime = st.st_mtime;
1278 file->len32 = (uint32)st.st_size;
1279 #if SIZEOF_CAPITAL_OFF_T >= 8
1280 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1281 file->flags |= FLAG_LENGTH64;
1282 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1285 file->mode = st.st_mode;
1287 F_OWNER(file) = st.st_uid;
1289 F_GROUP(file) = st.st_gid;
1290 if (am_generator && st.st_uid == our_uid)
1291 file->flags |= FLAG_OWNED_BY_US;
1293 if (basename != thisname)
1294 file->dirname = lastdir;
1296 #ifdef SUPPORT_LINKS
1298 memcpy(bp + basename_len, linkname, linkname_len);
1301 if (always_checksum && am_sender && S_ISREG(st.st_mode))
1302 file_checksum(thisname, tmp_sum, st.st_size);
1305 F_PATHNAME(file) = pathname;
1307 F_DEPTH(file) = extra_len / EXTRA_LEN;
1309 if (basename_len == 0+1) {
1316 F_NDX(file) = dir_count;
1321 /* Only called for temporary file_struct entries created by make_file(). */
1322 void unmake_file(struct file_struct *file)
1324 free(REQ_EXTRA(file, F_DEPTH(file)));
1327 static struct file_struct *send_file_name(int f, struct file_list *flist,
1328 const char *fname, STRUCT_STAT *stp,
1329 int flags, int filter_level)
1331 struct file_struct *file;
1333 file = make_file(fname, flist, stp, flags, filter_level);
1337 if (chmod_modes && !S_ISLNK(file->mode))
1338 file->mode = tweak_mode(file->mode, chmod_modes);
1341 char fbuf[MAXPATHLEN];
1342 #ifdef SUPPORT_LINKS
1343 const char *symlink_name;
1346 char symlink_buf[MAXPATHLEN];
1349 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1353 #ifdef SUPPORT_LINKS
1354 if (preserve_links && S_ISLNK(file->mode)) {
1355 symlink_name = F_SYMLINK(file);
1356 symlink_len = strlen(symlink_name);
1357 if (symlink_len == 0) {
1358 io_error |= IOERR_GENERAL;
1360 rprintf(FERROR_XFER,
1361 "skipping symlink with 0-length value: %s\n",
1366 symlink_name = NULL;
1372 if (ic_send != (iconv_t)-1) {
1375 INIT_CONST_XBUF(outbuf, fbuf);
1377 if (file->dirname) {
1378 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1379 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1380 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1383 fbuf[outbuf.len++] = '/';
1386 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1387 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1389 io_error |= IOERR_GENERAL;
1390 rprintf(FERROR_XFER,
1391 "[%s] cannot convert filename: %s (%s)\n",
1392 who_am_i(), f_name(file, fbuf), strerror(errno));
1395 fbuf[outbuf.len] = '\0';
1397 #ifdef SUPPORT_LINKS
1398 if (symlink_len && sender_symlink_iconv) {
1399 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1400 INIT_CONST_XBUF(outbuf, symlink_buf);
1401 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1402 io_error |= IOERR_GENERAL;
1404 rprintf(FERROR_XFER,
1405 "[%s] cannot convert symlink data for: %s (%s)\n",
1406 who_am_i(), full_fname(fbuf), strerror(errno));
1409 symlink_buf[outbuf.len] = '\0';
1411 symlink_name = symlink_buf;
1412 symlink_len = outbuf.len;
1420 if (preserve_acls && !S_ISLNK(file->mode)) {
1421 sx.st.st_mode = file->mode;
1422 sx.acc_acl = sx.def_acl = NULL;
1423 if (get_acl(fname, &sx) < 0) {
1424 io_error |= IOERR_GENERAL;
1429 #ifdef SUPPORT_XATTRS
1430 if (preserve_xattrs) {
1431 sx.st.st_mode = file->mode;
1433 if (get_xattr(fname, &sx) < 0) {
1434 io_error |= IOERR_GENERAL;
1440 send_file_entry(f, fbuf, file,
1441 #ifdef SUPPORT_LINKS
1442 symlink_name, symlink_len,
1444 flist->used, flist->ndx_start);
1447 if (preserve_acls && !S_ISLNK(file->mode)) {
1452 #ifdef SUPPORT_XATTRS
1453 if (preserve_xattrs) {
1454 F_XATTR(file) = send_xattr(f, &sx);
1460 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1462 flist_expand(flist, 1);
1463 flist->files[flist->used++] = file;
1468 static void send_if_directory(int f, struct file_list *flist,
1469 struct file_struct *file,
1470 char *fbuf, unsigned int ol,
1473 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1475 if (S_ISDIR(file->mode)
1476 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1478 unsigned int len = strlen(fbuf);
1479 if (len > 1 && fbuf[len-1] == '/')
1481 save_filters = push_local_filters(fbuf, len);
1482 send_directory(f, flist, fbuf, len, flags);
1483 pop_local_filters(save_filters);
1490 static int file_compare(const void *file1, const void *file2)
1492 return f_name_cmp(*(struct file_struct **)file1,
1493 *(struct file_struct **)file2);
1496 /* The guts of a merge-sort algorithm. This was derived from the glibc
1497 * version, but I (Wayne) changed the merge code to do less copying and
1498 * to require only half the amount of temporary memory. */
1499 static void fsort_tmp(struct file_struct **fp, size_t num,
1500 struct file_struct **tmp)
1502 struct file_struct **f1, **f2, **t;
1511 fsort_tmp(f1, n1, tmp);
1513 fsort_tmp(f2, n2, tmp);
1515 while (f_name_cmp(*f1, *f2) <= 0) {
1522 memcpy(t, f1, n1 * PTR_SIZE);
1524 *f1++ = *f2++, n2--;
1526 while (n1 > 0 && n2 > 0) {
1527 if (f_name_cmp(*t, *f2) <= 0)
1530 *f1++ = *f2++, n2--;
1534 memcpy(f1, t, n1 * PTR_SIZE);
1537 /* This file-struct sorting routine makes sure that any identical names in
1538 * the file list stay in the same order as they were in the original list.
1539 * This is particularly vital in inc_recurse mode where we expect a sort
1540 * on the flist to match the exact order of a sort on the dir_flist. */
1541 static void fsort(struct file_struct **fp, size_t num)
1547 qsort(fp, num, PTR_SIZE, file_compare);
1549 struct file_struct **tmp = new_array(struct file_struct *,
1551 fsort_tmp(fp, num, tmp);
1556 /* We take an entire set of sibling dirs from the sorted flist and link them
1557 * into the tree, setting the appropriate parent/child/sibling pointers. */
1558 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1563 int32 *parent_dp = parent_ndx < 0 ? NULL
1564 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1566 flist_expand(dir_flist, dir_cnt);
1567 dir_flist->sorted = dir_flist->files;
1569 for (i = 0; dir_cnt; i++) {
1570 struct file_struct *file = from_flist->sorted[i];
1572 if (!S_ISDIR(file->mode))
1575 dir_flist->files[dir_flist->used++] = file;
1578 if (file->basename[0] == '.' && file->basename[1] == '\0')
1582 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1584 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1586 send_dir_ndx = dir_flist->used - 1;
1588 dp = F_DIR_NODE_P(file);
1589 DIR_PARENT(dp) = parent_ndx;
1590 DIR_FIRST_CHILD(dp) = -1;
1593 DIR_NEXT_SIBLING(dp) = -1;
1596 static void interpret_stat_error(const char *fname, int is_dir)
1598 if (errno == ENOENT) {
1599 io_error |= IOERR_VANISHED;
1600 rprintf(FWARNING, "%s has vanished: %s\n",
1601 is_dir ? "directory" : "file", full_fname(fname));
1603 io_error |= IOERR_GENERAL;
1604 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1609 /* This function is normally called by the sender, but the receiving side also
1610 * calls it from get_dirlist() with f set to -1 so that we just construct the
1611 * file list in memory without sending it over the wire. Also, get_dirlist()
1612 * might call this with f set to -2, which also indicates that local filter
1613 * rules should be ignored. */
1614 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1621 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1622 int start = flist->used;
1623 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1625 assert(flist != NULL);
1627 if (!(d = opendir(fbuf))) {
1628 if (errno == ENOENT) {
1629 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1630 interpret_stat_error(fbuf, True);
1633 io_error |= IOERR_GENERAL;
1634 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1639 if (len == 1 && *fbuf == '/')
1640 remainder = MAXPATHLEN - 1;
1641 else if (len < MAXPATHLEN-1) {
1644 remainder = MAXPATHLEN - (len + 1);
1648 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1650 char *dname = d_name(di);
1651 if (dname[0] == '.' && (dname[1] == '\0'
1652 || (dname[1] == '.' && dname[2] == '\0')))
1654 name_len = strlcpy(p, dname, remainder);
1655 if (name_len >= remainder) {
1656 char save = fbuf[len];
1658 io_error |= IOERR_GENERAL;
1659 rprintf(FERROR_XFER,
1660 "filename overflows max-path len by %u: %s/%s\n",
1661 name_len - remainder + 1, fbuf, dname);
1665 if (dname[0] == '\0') {
1666 io_error |= IOERR_GENERAL;
1667 rprintf(FERROR_XFER,
1668 "cannot send file with empty name in %s\n",
1673 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1679 io_error |= IOERR_GENERAL;
1680 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1685 if (f >= 0 && recurse && !divert_dirs) {
1686 int i, end = flist->used - 1;
1687 /* send_if_directory() bumps flist->used, so use "end". */
1688 for (i = start; i <= end; i++)
1689 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1693 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1694 char *start, char *limit, int flags, char name_type)
1696 static char lastpath[MAXPATHLEN] = "";
1697 static int lastpath_len = 0;
1698 static struct file_struct *lastpath_struct = NULL;
1699 struct file_struct *file;
1700 item_list *relname_list;
1701 relnamecache **rnpp;
1702 int len, need_new_dir, depth = 0;
1703 struct filter_list_struct save_filter_list = filter_list;
1705 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1706 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1709 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1710 && lastpath_len == limit - fname
1711 && strncmp(lastpath, fname, lastpath_len) == 0)
1716 char *tp = fname, *lp = lastpath;
1717 /* Skip any initial directories in our path that we
1718 * have in common with lastpath. */
1719 assert(start == fname);
1720 for ( ; ; tp++, lp++) {
1722 if (*lp == '/' || *lp == '\0')
1737 int save_copy_links = copy_links;
1738 int save_xfer_dirs = xfer_dirs;
1741 copy_links = xfer_dirs = 1;
1745 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1747 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1749 if (!inc_recurse && file && S_ISDIR(file->mode))
1750 change_local_filter_dir(fname, strlen(fname), depth);
1754 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1756 if (file && !S_ISDIR(file->mode))
1758 lastpath_struct = file;
1759 } else if (file && S_ISDIR(file->mode))
1760 change_local_filter_dir(fname, strlen(fname), ++depth);
1762 strlcpy(lastpath, fname, sizeof lastpath);
1763 lastpath_len = limit - fname;
1767 copy_links = save_copy_links;
1768 xfer_dirs = save_xfer_dirs;
1774 if (!lastpath_struct)
1775 goto done; /* dir must have vanished */
1777 len = strlen(limit+1);
1778 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1779 if (!relname_list) {
1780 if (!(relname_list = new0(item_list)))
1781 out_of_memory("send_implied_dirs");
1782 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1784 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1785 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1786 out_of_memory("send_implied_dirs");
1787 (*rnpp)->name_type = name_type;
1788 strlcpy((*rnpp)->fname, limit+1, len + 1);
1791 filter_list = save_filter_list;
1794 static NORETURN void fatal_unsafe_io_error(void)
1796 /* This (sadly) can only happen when pushing data because
1797 * the sender does not know about what kind of delete
1798 * is in effect on the receiving side when pulling. */
1799 rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-during issue with a pre-3.0.7 receiver.\n");
1800 exit_cleanup(RERR_UNSUPPORTED);
1803 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1805 char fbuf[MAXPATHLEN];
1806 item_list *relname_list;
1807 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1811 dlen = strlen(fbuf);
1813 if (!change_pathname(file, NULL, 0))
1814 exit_cleanup(RERR_FILESELECT);
1816 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1818 if (file->flags & FLAG_CONTENT_DIR) {
1819 if (one_file_system) {
1821 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1822 interpret_stat_error(fbuf, True);
1825 filesystem_dev = st.st_dev;
1827 send_directory(f, flist, fbuf, dlen, flags);
1830 if (!relative_paths)
1833 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1837 for (j = 0; j < relname_list->count; j++) {
1839 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1840 char name_type = rnp->name_type;
1843 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1845 if (len >= (int)sizeof fbuf)
1846 continue; /* Impossible... */
1848 slash = strchr(fbuf+dlen+1, '/');
1850 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1854 if (name_type != NORMAL_NAME) {
1856 if (link_stat(fbuf, &st, 1) != 0) {
1857 interpret_stat_error(fbuf, True);
1860 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1862 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1868 void send_extra_file_list(int f, int at_least)
1870 struct file_list *flist;
1873 int old_cnt, save_io_error = io_error;
1878 /* Keep sending data until we have the requested number of
1879 * files in the upcoming file-lists. */
1880 old_cnt = cur_flist->used;
1881 for (flist = first_flist; flist != cur_flist; flist = flist->next)
1882 old_cnt += flist->used;
1883 while (file_total - old_cnt < at_least) {
1884 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1885 int dir_ndx, dstart = dir_count;
1886 const char *pathname = F_PATHNAME(file);
1889 flist = flist_new(0, "send_extra_file_list");
1890 start_write = stats.total_written;
1893 dir_ndx = F_NDX(file);
1895 dir_ndx = send_dir_ndx;
1896 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1897 flist->parent_ndx = dir_ndx;
1899 send1extra(f, file, flist);
1900 prev_flags = file->flags;
1901 dp = F_DIR_NODE_P(file);
1903 /* If there are any duplicate directory names that follow, we
1904 * send all the dirs together in one file-list. The dir_flist
1905 * tree links all the child subdirs onto the last dup dir. */
1906 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1907 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1908 send_dir_ndx = dir_ndx;
1909 file = dir_flist->sorted[dir_ndx];
1910 /* Try to avoid some duplicate scanning of identical dirs. */
1911 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1912 file->flags &= ~FLAG_CONTENT_DIR;
1913 send1extra(f, file, flist);
1914 prev_flags = file->flags;
1915 dp = F_DIR_NODE_P(file);
1918 if (io_error == save_io_error || ignore_errors)
1920 else if (use_safe_inc_flist) {
1921 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
1922 write_varint(f, io_error);
1925 fatal_unsafe_io_error();
1929 if (need_unsorted_flist) {
1930 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1931 out_of_memory("send_extra_file_list");
1932 memcpy(flist->sorted, flist->files,
1933 flist->used * sizeof (struct file_struct*));
1935 flist->sorted = flist->files;
1937 flist_sort_and_clean(flist, 0);
1939 add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
1940 flist_done_allocating(flist);
1942 file_total += flist->used;
1943 stats.flist_size += stats.total_written - start_write;
1944 stats.num_files += flist->used;
1946 output_flist(flist);
1948 if (DIR_FIRST_CHILD(dp) >= 0) {
1949 send_dir_ndx = DIR_FIRST_CHILD(dp);
1952 while (DIR_NEXT_SIBLING(dp) < 0) {
1953 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1954 write_ndx(f, NDX_FLIST_EOF);
1956 change_local_filter_dir(NULL, 0, 0);
1960 file = dir_flist->sorted[send_dir_ndx];
1961 dp = F_DIR_NODE_P(file);
1963 send_dir_ndx = DIR_NEXT_SIBLING(dp);
1968 if (io_error != save_io_error && !ignore_errors)
1969 send_msg_int(MSG_IO_ERROR, io_error);
1972 struct file_list *send_file_list(int f, int argc, char *argv[])
1974 static const char *lastdir;
1975 static int lastdir_len = -1;
1979 struct file_list *flist;
1980 struct timeval start_tv, end_tv;
1983 int disable_buffering;
1984 int flags = recurse ? FLAG_CONTENT_DIR : 0;
1985 int reading_remotely = filesfrom_host != NULL;
1986 int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
1988 | (filesfrom_convert ? RL_CONVERT : 0)
1990 | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
1991 int implied_dot_dir = 0;
1993 rprintf(FLOG, "building file list\n");
1994 if (show_filelist_p())
1995 start_filelist_progress("building file list");
1996 else if (inc_recurse && verbose && !am_server)
1997 rprintf(FCLIENT, "sending incremental file list\n");
1999 start_write = stats.total_written;
2000 gettimeofday(&start_tv, NULL);
2002 if (relative_paths && protocol_version >= 30)
2003 implied_dirs = 1; /* We send flagged implied dirs */
2005 #ifdef SUPPORT_HARD_LINKS
2006 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2010 flist = cur_flist = flist_new(0, "send_file_list");
2012 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2013 flags |= FLAG_DIVERT_DIRS;
2015 dir_flist = cur_flist;
2017 disable_buffering = io_start_buffering_out(f);
2018 if (filesfrom_fd >= 0) {
2019 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2020 rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2021 full_fname(argv[0]));
2022 exit_cleanup(RERR_FILESELECT);
2028 orig_dir = strdup(curr_dir);
2031 char fbuf[MAXPATHLEN], *fn, name_type;
2034 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2036 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2040 strlcpy(fbuf, *argv++, MAXPATHLEN);
2042 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2046 if (relative_paths) {
2047 /* We clean up fbuf below. */
2048 name_type = NORMAL_NAME;
2049 } else if (!len || fbuf[len - 1] == '/') {
2050 if (len == 2 && fbuf[0] == '.') {
2051 /* Turn "./" into just "." rather than "./." */
2054 if (len + 1 >= MAXPATHLEN)
2055 overflow_exit("send_file_list");
2059 name_type = DOTDIR_NAME;
2060 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2061 && (len == 2 || fbuf[len-3] == '/')) {
2062 if (len + 2 >= MAXPATHLEN)
2063 overflow_exit("send_file_list");
2067 name_type = DOTDIR_NAME;
2068 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2069 name_type = DOTDIR_NAME;
2071 name_type = NORMAL_NAME;
2075 if (!relative_paths) {
2076 p = strrchr(fbuf, '/');
2083 len -= p - fbuf + 1;
2088 if ((p = strstr(fbuf, "/./")) != NULL) {
2094 clean_fname(dir, 0);
2100 *--fn = '\0'; /* ensure room for '.' */
2103 /* A leading ./ can be used in relative mode to affect
2104 * the dest dir without its name being in the path. */
2105 if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2106 send_file_name(f, flist, ".", NULL,
2107 (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2109 implied_dot_dir = 1;
2111 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2112 | CFN_DROP_TRAILING_DOT_DIR);
2117 name_type = DOTDIR_NAME;
2118 } else if (fn[0] == '.')
2119 name_type = DOTDIR_NAME;
2120 } else if (fn[len-1] == '/') {
2122 if (len == 1 && *fn == '.')
2123 name_type = DOTDIR_NAME;
2125 name_type = SLASH_ENDING_NAME;
2127 /* Reject a ".." dir in the active part of the path. */
2128 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2129 if ((p[2] == '/' || p[2] == '\0')
2130 && (p == fn || p[-1] == '/')) {
2132 "found \"..\" dir in relative path: %s\n",
2134 exit_cleanup(RERR_SYNTAX);
2142 name_type = DOTDIR_NAME;
2145 dirlen = dir ? strlen(dir) : 0;
2146 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2147 if (!change_pathname(NULL, dir, -dirlen))
2150 lastdir_len = pathname_len;
2151 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2155 memmove(fbuf, fn, len + 1);
2157 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2158 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2159 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2160 io_error |= IOERR_GENERAL;
2161 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2166 /* A dot-dir should not be excluded! */
2167 if (name_type != DOTDIR_NAME
2168 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2171 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2172 rprintf(FINFO, "skipping directory %s\n", fbuf);
2176 if (inc_recurse && relative_paths && *fbuf) {
2177 if ((p = strchr(fbuf+1, '/')) != NULL) {
2178 if (p - fbuf == 1 && *fbuf == '.') {
2179 if ((fn = strchr(p+1, '/')) != NULL)
2183 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2187 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2188 /* Send the implied directories at the start of the
2189 * source spec, so we get their permissions right. */
2190 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2193 if (one_file_system)
2194 filesystem_dev = st.st_dev;
2196 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2197 struct file_struct *file;
2198 file = send_file_name(f, flist, fbuf, &st,
2199 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2204 if (name_type == DOTDIR_NAME) {
2205 if (send_dir_depth < 0) {
2207 change_local_filter_dir(fbuf, len, send_dir_depth);
2209 send_directory(f, flist, fbuf, len, flags);
2212 send_if_directory(f, flist, file, fbuf, len, flags);
2214 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2217 gettimeofday(&end_tv, NULL);
2218 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2219 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2220 if (stats.flist_buildtime == 0)
2221 stats.flist_buildtime = 1;
2224 /* Indicate end of file list */
2225 if (io_error == 0 || ignore_errors)
2227 else if (use_safe_inc_flist) {
2228 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2229 write_varint(f, io_error);
2231 if (delete_during && inc_recurse)
2232 fatal_unsafe_io_error();
2236 #ifdef SUPPORT_HARD_LINKS
2237 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2241 if (show_filelist_p())
2242 finish_filelist_progress(flist);
2244 gettimeofday(&end_tv, NULL);
2245 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2246 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2248 /* When converting names, both sides keep an unsorted file-list array
2249 * because the names will differ on the sending and receiving sides
2250 * (both sides will use the unsorted index number for each item). */
2252 /* Sort the list without removing any duplicates. This allows the
2253 * receiving side to ask for whatever name it kept. For incremental
2254 * recursion mode, the sender marks duplicate dirs so that it can
2255 * send them together in a single file-list. */
2256 if (need_unsorted_flist) {
2257 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2258 out_of_memory("send_file_list");
2259 memcpy(flist->sorted, flist->files,
2260 flist->used * sizeof (struct file_struct*));
2262 flist->sorted = flist->files;
2263 flist_sort_and_clean(flist, 0);
2264 file_total += flist->used;
2266 if (numeric_ids <= 0 && !inc_recurse)
2271 /* send the io_error flag */
2272 if (protocol_version < 30)
2273 write_int(f, ignore_errors ? 0 : io_error);
2274 else if (!use_safe_inc_flist && io_error && !ignore_errors)
2275 send_msg_int(MSG_IO_ERROR, io_error);
2277 if (disable_buffering)
2278 io_end_buffering_out();
2280 stats.flist_size = stats.total_written - start_write;
2281 stats.num_files = flist->used;
2284 output_flist(flist);
2287 rprintf(FINFO, "send_file_list done\n");
2291 add_dirs_to_tree(-1, flist, dir_count);
2292 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2293 flist->parent_ndx = -1;
2294 flist_done_allocating(flist);
2295 if (send_dir_ndx < 0) {
2296 write_ndx(f, NDX_FLIST_EOF);
2299 else if (file_total == 1) {
2300 /* If we're creating incremental file-lists and there
2301 * was just 1 item in the first file-list, send 1 more
2302 * file-list to check if this is a 1-file xfer. */
2303 send_extra_file_list(f, 1);
2310 struct file_list *recv_file_list(int f)
2312 struct file_list *flist;
2315 int save_verbose = verbose;
2318 rprintf(FLOG, "receiving file list\n");
2319 if (show_filelist_p())
2320 start_filelist_progress("receiving file list");
2321 else if (inc_recurse && verbose && !am_server && !first_flist)
2322 rprintf(FCLIENT, "receiving incremental file list\n");
2324 start_read = stats.total_read;
2326 #ifdef SUPPORT_HARD_LINKS
2327 if (preserve_hard_links && !first_flist)
2331 flist = flist_new(0, "recv_file_list");
2334 if (flist->ndx_start == 1)
2335 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2336 dstart = dir_flist->used;
2342 if (am_server && verbose > 2)
2344 while ((flags = read_byte(f)) != 0) {
2345 struct file_struct *file;
2347 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2348 flags |= read_byte(f) << 8;
2350 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2352 if (!use_safe_inc_flist) {
2353 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2354 exit_cleanup(RERR_PROTOCOL);
2356 err = read_varint(f);
2362 flist_expand(flist, 1);
2363 file = recv_file_entry(f, flist, flags);
2365 if (inc_recurse && S_ISDIR(file->mode)) {
2366 flist_expand(dir_flist, 1);
2367 dir_flist->files[dir_flist->used++] = file;
2370 flist->files[flist->used++] = file;
2372 maybe_emit_filelist_progress(flist->used);
2375 char *name = f_name(file, NULL);
2376 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2379 file_total += flist->used;
2380 verbose = save_verbose;
2383 rprintf(FINFO, "received %d names\n", flist->used);
2385 if (show_filelist_p())
2386 finish_filelist_progress(flist);
2388 if (need_unsorted_flist) {
2389 /* Create an extra array of index pointers that we can sort for
2390 * the generator's use (for wading through the files in sorted
2391 * order and for calling flist_find()). We keep the "files"
2392 * list unsorted for our exchange of index numbers with the
2393 * other side (since their names may not sort the same). */
2394 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2395 out_of_memory("recv_file_list");
2396 memcpy(flist->sorted, flist->files,
2397 flist->used * sizeof (struct file_struct*));
2398 if (inc_recurse && dir_flist->used > dstart) {
2399 static int dir_flist_malloced = 0;
2400 if (dir_flist_malloced < dir_flist->malloced) {
2401 dir_flist->sorted = realloc_array(dir_flist->sorted,
2402 struct file_struct *,
2403 dir_flist->malloced);
2404 dir_flist_malloced = dir_flist->malloced;
2406 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2407 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2408 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2411 flist->sorted = flist->files;
2412 if (inc_recurse && dir_flist->used > dstart) {
2413 dir_flist->sorted = dir_flist->files;
2414 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2419 flist_done_allocating(flist);
2421 recv_id_list(f, flist);
2423 flist_sort_and_clean(flist, relative_paths);
2425 if (protocol_version < 30) {
2426 /* Recv the io_error flag */
2430 io_error |= read_int(f);
2431 } else if (inc_recurse && flist->ndx_start == 1) {
2432 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2433 flist->parent_ndx = -1;
2437 output_flist(flist);
2440 rprintf(FINFO, "recv_file_list done\n");
2442 stats.flist_size += stats.total_read - start_read;
2443 stats.num_files += flist->used;
2448 /* This is only used once by the receiver if the very first file-list
2449 * has exactly one item in it. */
2450 void recv_additional_file_list(int f)
2452 struct file_list *flist;
2453 int ndx = read_ndx(f);
2454 if (ndx == NDX_FLIST_EOF) {
2456 change_local_filter_dir(NULL, 0, 0);
2458 ndx = NDX_FLIST_OFFSET - ndx;
2459 if (ndx < 0 || ndx >= dir_flist->used) {
2460 ndx = NDX_FLIST_OFFSET - ndx;
2462 "[%s] Invalid dir index: %d (%d - %d)\n",
2463 who_am_i(), ndx, NDX_FLIST_OFFSET,
2464 NDX_FLIST_OFFSET - dir_flist->used + 1);
2465 exit_cleanup(RERR_PROTOCOL);
2468 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2471 flist = recv_file_list(f);
2472 flist->parent_ndx = ndx;
2476 /* Search for an identically-named item in the file list. Note that the
2477 * items must agree in their directory-ness, or no match is returned. */
2478 int flist_find(struct file_list *flist, struct file_struct *f)
2480 int low = flist->low, high = flist->high;
2481 int diff, mid, mid_up;
2483 while (low <= high) {
2484 mid = (low + high) / 2;
2485 if (F_IS_ACTIVE(flist->sorted[mid]))
2488 /* Scan for the next non-empty entry using the cached
2489 * distance values. If the value isn't fully up-to-
2490 * date, update it. */
2491 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2492 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2494 mid_up += F_DEPTH(flist->sorted[mid_up]);
2495 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2496 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2498 if (mid_up > high) {
2499 /* If there's nothing left above us, set high to
2500 * a non-empty entry below us and continue. */
2501 high = mid - (int)flist->sorted[mid]->len32;
2502 if (!F_IS_ACTIVE(flist->sorted[high])) {
2504 high -= (int)flist->sorted[high]->len32;
2505 } while (!F_IS_ACTIVE(flist->sorted[high]));
2506 flist->sorted[mid]->len32 = mid - high;
2511 diff = f_name_cmp(flist->sorted[mid_up], f);
2513 if (protocol_version < 29
2514 && S_ISDIR(flist->sorted[mid_up]->mode)
2515 != S_ISDIR(f->mode))
2527 /* Search for an identically-named item in the file list. Differs from
2528 * flist_find in that an item that agrees with "f" in directory-ness is
2529 * preferred but one that does not is still found. */
2530 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2535 /* First look for an item that agrees in directory-ness. */
2536 ndx = flist_find(flist, f);
2540 /* Temporarily flip f->mode to look for an item of opposite
2541 * directory-ness. */
2542 save_mode = f->mode;
2543 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2544 ndx = flist_find(flist, f);
2545 f->mode = save_mode;
2550 * Free up any resources a file_struct has allocated
2551 * and clear the file.
2553 void clear_file(struct file_struct *file)
2555 /* The +1 zeros out the first char of the basename. */
2556 memset(file, 0, FILE_STRUCT_LEN + 1);
2557 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2558 * entry. Likewise for len32 in the opposite direction. We assume
2559 * that we're alone for now since flist_find() will adjust the counts
2560 * it runs into that aren't up-to-date. */
2561 file->len32 = F_DEPTH(file) = 1;
2564 /* Allocate a new file list. */
2565 struct file_list *flist_new(int flags, char *msg)
2567 struct file_list *flist;
2569 if (!(flist = new0(struct file_list)))
2572 if (flags & FLIST_TEMP) {
2573 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2574 out_of_memory, POOL_INTERN)))
2577 /* This is a doubly linked list with prev looping back to
2578 * the end of the list, but the last next pointer is NULL. */
2580 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2581 out_of_memory, POOL_INTERN);
2582 if (!flist->file_pool)
2585 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2587 first_flist = cur_flist = flist->prev = flist;
2589 struct file_list *prev = first_flist->prev;
2591 flist->file_pool = first_flist->file_pool;
2593 flist->ndx_start = prev->ndx_start + prev->used + 1;
2594 flist->flist_num = prev->flist_num + 1;
2597 prev->next = first_flist->prev = flist;
2599 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2606 /* Free up all elements in a flist. */
2607 void flist_free(struct file_list *flist)
2610 /* Was FLIST_TEMP dir-list. */
2611 } else if (flist == flist->prev) {
2612 first_flist = cur_flist = NULL;
2616 if (flist == cur_flist)
2617 cur_flist = flist->next;
2618 if (flist == first_flist)
2619 first_flist = first_flist->next;
2621 flist->prev->next = flist->next;
2623 flist->next = first_flist;
2625 flist->next->prev = flist->prev;
2626 file_total -= flist->used;
2630 if (!flist->prev || !flist_cnt)
2631 pool_destroy(flist->file_pool);
2633 pool_free_old(flist->file_pool, flist->pool_boundary);
2635 if (flist->sorted && flist->sorted != flist->files)
2636 free(flist->sorted);
2641 /* This routine ensures we don't have any duplicate names in our file list.
2642 * duplicate names can cause corruption because of the pipelining. */
2643 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2645 char fbuf[MAXPATHLEN];
2650 if (flist->used == 0) {
2656 fsort(flist->sorted, flist->used);
2658 if (!am_sender || inc_recurse) {
2659 for (i = prev_i = 0; i < flist->used; i++) {
2660 if (F_IS_ACTIVE(flist->sorted[i])) {
2665 flist->low = prev_i;
2667 i = prev_i = flist->used - 1;
2671 while (++i < flist->used) {
2673 struct file_struct *file = flist->sorted[i];
2675 if (!F_IS_ACTIVE(file))
2677 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2679 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2680 int save_mode = file->mode;
2681 /* Make sure that this directory doesn't duplicate a
2682 * non-directory earlier in the list. */
2683 flist->high = prev_i;
2684 file->mode = S_IFREG;
2685 j = flist_find(flist, file);
2686 file->mode = save_mode;
2691 /* If one is a dir and the other is not, we want to
2692 * keep the dir because it might have contents in the
2693 * list. Otherwise keep the first one. */
2694 if (S_ISDIR(file->mode)) {
2695 struct file_struct *fp = flist->sorted[j];
2696 if (!S_ISDIR(fp->mode))
2700 file->flags |= FLAG_DUPLICATE;
2701 else { /* Make sure we merge our vital flags. */
2702 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2703 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2713 "removing duplicate name %s from file list (%d)\n",
2714 f_name(file, fbuf), drop + flist->ndx_start);
2716 clear_file(flist->sorted[drop]);
2720 if (flist->low == drop) {
2722 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2731 flist->high = prev_i;
2734 /* We need to strip off the leading slashes for relative
2735 * paths, but this must be done _after_ the sorting phase. */
2736 for (i = flist->low; i <= flist->high; i++) {
2737 struct file_struct *file = flist->sorted[i];
2741 while (*file->dirname == '/')
2743 if (!*file->dirname)
2744 file->dirname = NULL;
2748 if (prune_empty_dirs && !am_sender) {
2749 int j, prev_depth = 0;
2751 prev_i = 0; /* It's OK that this isn't really true. */
2753 for (i = flist->low; i <= flist->high; i++) {
2754 struct file_struct *fp, *file = flist->sorted[i];
2756 /* This temporarily abuses the F_DEPTH() value for a
2757 * directory that is in a chain that might get pruned.
2758 * We restore the old value if it gets a reprieve. */
2759 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2760 /* Dump empty dirs when coming back down. */
2761 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2762 fp = flist->sorted[prev_i];
2763 if (F_DEPTH(fp) >= 0)
2765 prev_i = -F_DEPTH(fp)-1;
2768 prev_depth = F_DEPTH(file);
2769 if (is_excluded(f_name(file, fbuf), 1,
2771 /* Keep dirs through this dir. */
2772 for (j = prev_depth-1; ; j--) {
2773 fp = flist->sorted[prev_i];
2774 if (F_DEPTH(fp) >= 0)
2776 prev_i = -F_DEPTH(fp)-1;
2780 F_DEPTH(file) = -prev_i-1;
2783 /* Keep dirs through this non-dir. */
2784 for (j = prev_depth; ; j--) {
2785 fp = flist->sorted[prev_i];
2786 if (F_DEPTH(fp) >= 0)
2788 prev_i = -F_DEPTH(fp)-1;
2793 /* Dump all remaining empty dirs. */
2795 struct file_struct *fp = flist->sorted[prev_i];
2796 if (F_DEPTH(fp) >= 0)
2798 prev_i = -F_DEPTH(fp)-1;
2802 for (i = flist->low; i <= flist->high; i++) {
2803 if (F_IS_ACTIVE(flist->sorted[i]))
2807 for (i = flist->high; i >= flist->low; i--) {
2808 if (F_IS_ACTIVE(flist->sorted[i]))
2815 static void output_flist(struct file_list *flist)
2817 char uidbuf[16], gidbuf[16], depthbuf[16];
2818 struct file_struct *file;
2819 const char *root, *dir, *slash, *name, *trail;
2820 const char *who = who_am_i();
2823 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2824 who, flist->ndx_start, flist->used, flist->low, flist->high);
2825 for (i = 0; i < flist->used; i++) {
2826 file = flist->files[i];
2827 if ((am_root || am_sender) && uid_ndx) {
2828 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2833 static char parens[] = "(\0)\0\0\0";
2834 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2835 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2836 pp, F_GROUP(file), pp + 2);
2840 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2841 if (F_IS_ACTIVE(file)) {
2842 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2843 if ((dir = file->dirname) == NULL)
2847 name = file->basename;
2848 trail = S_ISDIR(file->mode) ? "/" : "";
2850 root = dir = slash = name = trail = "";
2852 "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2853 who, i + flist->ndx_start,
2854 root, dir, slash, name, trail,
2855 (int)file->mode, (double)F_LENGTH(file),
2856 uidbuf, gidbuf, file->flags);
2860 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2861 enum fnc_type { t_PATH, t_ITEM };
2863 static int found_prefix;
2865 /* Compare the names of two file_struct entities, similar to how strcmp()
2866 * would do if it were operating on the joined strings.
2868 * Some differences beginning with protocol_version 29: (1) directory names
2869 * are compared with an assumed trailing slash so that they compare in a
2870 * way that would cause them to sort immediately prior to any content they
2871 * may have; (2) a directory of any name compares after a non-directory of
2872 * any name at the same depth; (3) a directory with name "." compares prior
2873 * to anything else. These changes mean that a directory and a non-dir
2874 * with the same name will not compare as equal (protocol_version >= 29).
2876 * The dirname component can be an empty string, but the basename component
2877 * cannot (and never is in the current codebase). The basename component
2878 * may be NULL (for a removed item), in which case it is considered to be
2879 * after any existing item. */
2880 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2883 const uchar *c1, *c2;
2884 enum fnc_state state1, state2;
2885 enum fnc_type type1, type2;
2886 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2888 if (!f1 || !F_IS_ACTIVE(f1)) {
2889 if (!f2 || !F_IS_ACTIVE(f2))
2893 if (!f2 || !F_IS_ACTIVE(f2))
2896 c1 = (uchar*)f1->dirname;
2897 c2 = (uchar*)f2->dirname;
2901 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2902 c1 = (const uchar*)f1->basename;
2903 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2905 state1 = s_TRAILING;
2914 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2915 c2 = (const uchar*)f2->basename;
2916 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2918 state2 = s_TRAILING;
2928 return type1 == t_PATH ? 1 : -1;
2938 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2939 c1 = (const uchar*)f1->basename;
2940 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2942 state1 = s_TRAILING;
2948 state1 = s_TRAILING;
2949 if (type1 == t_PATH) {
2958 if (*c2 && type1 != type2)
2959 return type1 == t_PATH ? 1 : -1;
2968 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2969 c2 = (const uchar*)f2->basename;
2970 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2972 state2 = s_TRAILING;
2978 state2 = s_TRAILING;
2979 if (type2 == t_PATH) {
2992 return type1 == t_PATH ? 1 : -1;
2994 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
2999 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3000 * not match if f2's basename is not an exact match of a path element in f1.
3001 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3002 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3006 return found_prefix;
3009 char *f_name_buf(void)
3011 static char names[5][MAXPATHLEN];
3012 static unsigned int n;
3014 n = (n + 1) % (sizeof names / sizeof names[0]);
3019 /* Return a copy of the full filename of a flist entry, using the indicated
3020 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3021 * done because we checked the size when creating the file_struct entry.
3023 char *f_name(const struct file_struct *f, char *fbuf)
3025 if (!f || !F_IS_ACTIVE(f))
3029 fbuf = f_name_buf();
3032 int len = strlen(f->dirname);
3033 memcpy(fbuf, f->dirname, len);
3035 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3037 strlcpy(fbuf, f->basename, MAXPATHLEN);
3042 /* Do a non-recursive scan of the named directory, possibly ignoring all
3043 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3044 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3045 * buffer (the functions we call will append names onto the end, but the old
3046 * dir value will be restored on exit). */
3047 struct file_list *get_dirlist(char *dirname, int dlen, int flags)
3049 struct file_list *dirlist;
3050 char dirbuf[MAXPATHLEN];
3051 int save_recurse = recurse;
3052 int save_xfer_dirs = xfer_dirs;
3053 int save_prune_empty_dirs = prune_empty_dirs;
3054 int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
3057 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3058 if (dlen >= MAXPATHLEN)
3063 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3067 send_directory(senddir_fd, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
3068 xfer_dirs = save_xfer_dirs;
3069 recurse = save_recurse;
3071 flist_count_offset += dirlist->used;
3073 prune_empty_dirs = 0;
3074 dirlist->sorted = dirlist->files;
3075 flist_sort_and_clean(dirlist, 0);
3076 prune_empty_dirs = save_prune_empty_dirs;
3079 output_flist(dirlist);