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;
70 extern struct stats stats;
71 extern char *filesfrom_host;
73 extern char curr_dir[MAXPATHLEN];
75 extern struct chmod_mode_struct *chmod_modes;
77 extern struct filter_list_struct filter_list;
78 extern struct filter_list_struct daemon_filter_list;
81 extern int filesfrom_convert;
82 extern iconv_t ic_send, ic_recv;
85 #define PTR_SIZE (sizeof (struct file_struct *))
89 dev_t filesystem_dev; /* used to implement -x */
91 struct file_list *cur_flist, *first_flist, *dir_flist;
92 int send_dir_ndx = -1, send_dir_depth = -1;
93 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
94 int file_total = 0; /* total of all active items over all file-lists */
95 int flist_eof = 0; /* all the file-lists are now known */
98 #define SLASH_ENDING_NAME 1
101 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
102 * internally, even if this platform does not allow files to have 64-bit inums.
103 * The only exception is if we're on a platform with no 64-bit type at all.
105 * Because we use read_longint() to get these off the wire, if you transfer
106 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
107 * machine with no 64-bit types then you will get an overflow error.
109 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
110 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
111 * be truncated. But it's a kind of silly thing to do anyhow. */
113 /* The tmp_* vars are used as a cache area by make_file() to store data
114 * that the sender doesn't need to remember in its file list. The data
115 * will survive just long enough to be used by send_file_entry(). */
116 static dev_t tmp_rdev;
117 #ifdef SUPPORT_HARD_LINKS
118 static int64 tmp_dev = -1, tmp_ino;
120 static char tmp_sum[MAX_DIGEST_LEN];
122 static char empty_sum[MAX_DIGEST_LEN];
123 static int flist_count_offset; /* for --delete --progress */
124 static int dir_count = 0;
126 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
127 static void output_flist(struct file_list *flist);
129 void init_flist(void)
132 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
133 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
135 checksum_len = protocol_version < 21 ? 2
136 : protocol_version < 30 ? MD4_DIGEST_LEN
140 static int show_filelist_p(void)
142 return verbose && xfer_dirs && !am_server && !inc_recurse;
145 static void start_filelist_progress(char *kind)
147 rprintf(FCLIENT, "%s ... ", kind);
148 if (verbose > 1 || do_progress)
149 rprintf(FCLIENT, "\n");
153 static void emit_filelist_progress(int count)
155 rprintf(FCLIENT, " %d files...\r", count);
158 static void maybe_emit_filelist_progress(int count)
160 if (do_progress && show_filelist_p() && (count % 100) == 0)
161 emit_filelist_progress(count);
164 static void finish_filelist_progress(const struct file_list *flist)
167 /* This overwrites the progress line */
168 rprintf(FINFO, "%d file%sto consider\n",
169 flist->used, flist->used == 1 ? " " : "s ");
171 rprintf(FINFO, "done\n");
174 void show_flist_stats(void)
179 /* Stat either a symlink or its referent, depending on the settings of
180 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
182 * If path is the name of a symlink, then the linkbuf buffer (which must hold
183 * MAXPATHLEN chars) will be set to the symlink's target string.
185 * The stat structure pointed to by stp will contain information about the
186 * link or the referent as appropriate, if they exist. */
187 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
190 if (link_stat(path, stp, copy_dirlinks) < 0)
192 if (S_ISLNK(stp->st_mode)) {
193 int llen = readlink(path, linkbuf, MAXPATHLEN - 1);
196 linkbuf[llen] = '\0';
197 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
199 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
202 return x_stat(path, stp, NULL);
204 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
205 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
206 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
207 llen - SYMLINK_PREFIX_LEN + 1);
212 return x_stat(path, stp, NULL);
216 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
220 return x_stat(path, stp, NULL);
221 if (x_lstat(path, stp, NULL) < 0)
223 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
225 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
230 return x_stat(path, stp, NULL);
234 static inline int is_daemon_excluded(const char *fname, int is_dir)
236 if (daemon_filter_list.head
237 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
244 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
246 if (daemon_filter_list.head) {
249 while ((slash = strchr(slash+1, '/')) != NULL) {
252 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
261 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
270 /* This function is used to check if a file should be included/excluded
271 * from the list of files based on its name and type etc. The value of
272 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
273 static int is_excluded(const char *fname, int is_dir, int filter_level)
275 #if 0 /* This currently never happens, so avoid a useless compare. */
276 if (filter_level == NO_FILTERS)
279 if (is_daemon_excluded(fname, is_dir))
281 if (filter_level != ALL_FILTERS)
284 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
289 static void send_directory(int f, struct file_list *flist,
290 char *fbuf, int len, int flags);
292 static const char *pathname, *orig_dir;
293 static int pathname_len;
295 /* Make sure flist can hold at least flist->used + extra entries. */
296 static void flist_expand(struct file_list *flist, int extra)
298 struct file_struct **new_ptr;
300 if (flist->used + extra <= flist->malloced)
303 if (flist->malloced < FLIST_START)
304 flist->malloced = FLIST_START;
305 else if (flist->malloced >= FLIST_LINEAR)
306 flist->malloced += FLIST_LINEAR;
308 flist->malloced *= 2;
310 /* In case count jumped or we are starting the list
311 * with a known size just set it. */
312 if (flist->malloced < flist->used + extra)
313 flist->malloced = flist->used + extra;
315 new_ptr = realloc_array(flist->files, struct file_struct *,
318 if (verbose >= 2 && flist->malloced != FLIST_START) {
319 rprintf(FCLIENT, "[%s] expand file_list pointer array to %.0f bytes, did%s move\n",
321 (double)sizeof flist->files[0] * flist->malloced,
322 (new_ptr == flist->files) ? " not" : "");
325 flist->files = new_ptr;
328 out_of_memory("flist_expand");
331 static void flist_done_allocating(struct file_list *flist)
333 void *ptr = pool_boundary(flist->file_pool, 8*1024);
334 if (flist->pool_boundary == ptr)
335 flist->pool_boundary = NULL; /* list didn't use any pool memory */
337 flist->pool_boundary = ptr;
340 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
341 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
342 * with dir == NULL taken to be the starting directory, and dirlen < 0
343 * indicating that strdup(dir) should be called and then the -dirlen length
344 * value checked to ensure that it is not daemon-excluded. */
345 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
348 char *cpy = strdup(dir);
350 change_dir(orig_dir, CD_SKIP_CHDIR);
351 if (path_is_daemon_excluded(cpy, 0))
357 if (pathname == F_PATHNAME(file))
359 dir = F_PATHNAME(file);
361 dirlen = strlen(dir);
362 } else if (pathname == dir)
364 if (dir && *dir != '/')
365 change_dir(orig_dir, CD_SKIP_CHDIR);
369 pathname_len = dirlen;
374 if (!change_dir(dir, CD_NORMAL)) {
376 io_error |= IOERR_GENERAL;
377 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
379 change_dir(orig_dir, CD_NORMAL);
388 static void send_file_entry(int f, const char *fname, struct file_struct *file,
390 const char *symlink_name, int symlink_len,
392 int ndx, int first_ndx)
394 static time_t modtime;
396 #ifdef SUPPORT_HARD_LINKS
400 static uint32 rdev_major;
403 static const char *user_name, *group_name;
404 static char lastname[MAXPATHLEN];
405 int first_hlink_ndx = -1;
409 /* Initialize starting value of xflags. */
410 if (protocol_version >= 30 && S_ISDIR(file->mode)) {
412 if (file->flags & FLAG_CONTENT_DIR)
413 xflags = file->flags & FLAG_TOP_DIR;
414 else if (file->flags & FLAG_IMPLIED_DIR)
415 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
417 xflags = XMIT_NO_CONTENT_DIR;
419 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
421 if (file->mode == mode)
422 xflags |= XMIT_SAME_MODE;
426 if (preserve_devices && IS_DEVICE(mode)) {
427 if (protocol_version < 28) {
428 if (tmp_rdev == rdev)
429 xflags |= XMIT_SAME_RDEV_pre28;
434 if ((uint32)major(rdev) == rdev_major)
435 xflags |= XMIT_SAME_RDEV_MAJOR;
437 rdev_major = major(rdev);
438 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
439 xflags |= XMIT_RDEV_MINOR_8_pre30;
441 } else if (preserve_specials && IS_SPECIAL(mode)) {
442 /* Special files don't need an rdev number, so just make
443 * the historical transmission of the value efficient. */
444 if (protocol_version < 28)
445 xflags |= XMIT_SAME_RDEV_pre28;
447 rdev = MAKEDEV(major(rdev), 0);
448 xflags |= XMIT_SAME_RDEV_MAJOR;
449 if (protocol_version < 30)
450 xflags |= XMIT_RDEV_MINOR_8_pre30;
452 } else if (protocol_version < 28)
453 rdev = MAKEDEV(0, 0);
454 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
455 xflags |= XMIT_SAME_UID;
459 user_name = add_uid(uid);
460 if (inc_recurse && user_name)
461 xflags |= XMIT_USER_NAME_FOLLOWS;
464 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
465 xflags |= XMIT_SAME_GID;
469 group_name = add_gid(gid);
470 if (inc_recurse && group_name)
471 xflags |= XMIT_GROUP_NAME_FOLLOWS;
474 if (file->modtime == modtime)
475 xflags |= XMIT_SAME_TIME;
477 modtime = file->modtime;
479 #ifdef SUPPORT_HARD_LINKS
481 if (protocol_version >= 30) {
482 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
483 first_hlink_ndx = (int32)(long)np->data - 1;
484 if (first_hlink_ndx < 0) {
485 np->data = (void*)(long)(first_ndx + ndx + 1);
486 xflags |= XMIT_HLINK_FIRST;
489 if (tmp_dev == dev) {
490 if (protocol_version >= 28)
491 xflags |= XMIT_SAME_DEV_pre30;
495 xflags |= XMIT_HLINKED;
500 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
502 l2 = strlen(fname+l1);
505 xflags |= XMIT_SAME_NAME;
507 xflags |= XMIT_LONG_NAME;
509 /* We must make sure we don't send a zero flag byte or the
510 * other end will terminate the flist transfer. Note that
511 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
512 * it's harmless way to add a bit to the first flag byte. */
513 if (protocol_version >= 28) {
514 if (!xflags && !S_ISDIR(mode))
515 xflags |= XMIT_TOP_DIR;
516 if ((xflags & 0xFF00) || !xflags) {
517 xflags |= XMIT_EXTENDED_FLAGS;
518 write_shortint(f, xflags);
520 write_byte(f, xflags);
522 if (!(xflags & 0xFF))
523 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
524 write_byte(f, xflags);
526 if (xflags & XMIT_SAME_NAME)
528 if (xflags & XMIT_LONG_NAME)
529 write_varint30(f, l2);
532 write_buf(f, fname + l1, l2);
534 if (first_hlink_ndx >= 0) {
535 write_varint(f, first_hlink_ndx);
536 if (first_hlink_ndx >= first_ndx)
540 write_varlong30(f, F_LENGTH(file), 3);
541 if (!(xflags & XMIT_SAME_TIME)) {
542 if (protocol_version >= 30)
543 write_varlong(f, modtime, 4);
545 write_int(f, modtime);
547 if (!(xflags & XMIT_SAME_MODE))
548 write_int(f, to_wire_mode(mode));
549 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
550 if (protocol_version < 30)
553 write_varint(f, uid);
554 if (xflags & XMIT_USER_NAME_FOLLOWS) {
555 int len = strlen(user_name);
557 write_buf(f, user_name, len);
561 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
562 if (protocol_version < 30)
565 write_varint(f, gid);
566 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
567 int len = strlen(group_name);
569 write_buf(f, group_name, len);
573 if ((preserve_devices && IS_DEVICE(mode))
574 || (preserve_specials && IS_SPECIAL(mode))) {
575 if (protocol_version < 28) {
576 if (!(xflags & XMIT_SAME_RDEV_pre28))
577 write_int(f, (int)rdev);
579 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
580 write_varint30(f, major(rdev));
581 if (protocol_version >= 30)
582 write_varint(f, minor(rdev));
583 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
584 write_byte(f, minor(rdev));
586 write_int(f, minor(rdev));
592 write_varint30(f, symlink_len);
593 write_buf(f, symlink_name, symlink_len);
597 #ifdef SUPPORT_HARD_LINKS
598 if (tmp_dev != -1 && protocol_version < 30) {
599 /* Older protocols expect the dev number to be transmitted
600 * 1-incremented so that it is never zero. */
601 if (protocol_version < 26) {
602 /* 32-bit dev_t and ino_t */
603 write_int(f, (int32)(dev+1));
604 write_int(f, (int32)tmp_ino);
606 /* 64-bit dev_t and ino_t */
607 if (!(xflags & XMIT_SAME_DEV_pre30))
608 write_longint(f, dev+1);
609 write_longint(f, tmp_ino);
614 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
619 /* Prior to 28, we sent a useless set of nulls. */
622 write_buf(f, sum, checksum_len);
626 strlcpy(lastname, fname, MAXPATHLEN);
628 if (S_ISREG(mode) || S_ISLNK(mode))
629 stats.total_size += F_LENGTH(file);
632 static struct file_struct *recv_file_entry(struct file_list *flist,
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(file, f);
1055 #ifdef SUPPORT_XATTRS
1056 if (preserve_xattrs)
1057 receive_xattr(file, f );
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 (!uid_ndx && flags & FLAG_DEL_NEEDS_UID)
1231 extra_len += EXTRA_LEN;
1233 #if SIZEOF_CAPITAL_OFF_T >= 8
1234 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1235 extra_len += EXTRA_LEN;
1238 #if EXTRA_ROUNDING > 0
1239 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1240 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1243 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1246 bp = pool_alloc(pool, alloc_len, "make_file");
1248 if (!(bp = new_array(char, alloc_len)))
1249 out_of_memory("make_file");
1252 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1254 file = (struct file_struct *)bp;
1255 bp += FILE_STRUCT_LEN;
1257 memcpy(bp, basename, basename_len);
1259 #ifdef SUPPORT_HARD_LINKS
1260 if (preserve_hard_links && flist && flist->prev) {
1261 if (protocol_version >= 28
1262 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1263 : S_ISREG(st.st_mode)) {
1264 tmp_dev = (int64)st.st_dev;
1265 tmp_ino = (int64)st.st_ino;
1271 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1272 if (IS_DEVICE(st.st_mode)) {
1273 tmp_rdev = st.st_rdev;
1275 } else if (IS_SPECIAL(st.st_mode))
1279 file->flags = flags;
1280 file->modtime = st.st_mtime;
1281 file->len32 = (uint32)st.st_size;
1282 #if SIZEOF_CAPITAL_OFF_T >= 8
1283 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1284 file->flags |= FLAG_LENGTH64;
1285 OPT_EXTRA(file, 0)->unum = (uint32)(st.st_size >> 32);
1288 file->mode = st.st_mode;
1289 if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1290 F_OWNER(file) = st.st_uid;
1291 else if (flags & FLAG_DEL_NEEDS_UID)
1292 F_DEL_OWNER(file) = st.st_uid;
1293 if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1294 F_GROUP(file) = st.st_gid;
1296 if (basename != thisname)
1297 file->dirname = lastdir;
1299 #ifdef SUPPORT_LINKS
1301 memcpy(bp + basename_len, linkname, linkname_len);
1304 if (always_checksum && am_sender && S_ISREG(st.st_mode))
1305 file_checksum(thisname, tmp_sum, st.st_size);
1308 F_PATHNAME(file) = pathname;
1310 F_DEPTH(file) = extra_len / EXTRA_LEN;
1312 if (basename_len == 0+1) {
1319 F_NDX(file) = dir_count;
1324 /* Only called for temporary file_struct entries created by make_file(). */
1325 void unmake_file(struct file_struct *file)
1327 free(REQ_EXTRA(file, F_DEPTH(file)));
1330 static struct file_struct *send_file_name(int f, struct file_list *flist,
1331 const char *fname, STRUCT_STAT *stp,
1332 int flags, int filter_level)
1334 struct file_struct *file;
1336 file = make_file(fname, flist, stp, flags, filter_level);
1340 if (chmod_modes && !S_ISLNK(file->mode))
1341 file->mode = tweak_mode(file->mode, chmod_modes);
1344 char fbuf[MAXPATHLEN];
1345 #ifdef SUPPORT_LINKS
1346 const char *symlink_name;
1349 char symlink_buf[MAXPATHLEN];
1352 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1356 #ifdef SUPPORT_LINKS
1357 if (preserve_links && S_ISLNK(file->mode)) {
1358 symlink_name = F_SYMLINK(file);
1359 symlink_len = strlen(symlink_name);
1360 if (symlink_len == 0) {
1361 io_error |= IOERR_GENERAL;
1363 rprintf(FERROR_XFER,
1364 "skipping symlink with 0-length value: %s\n",
1369 symlink_name = NULL;
1375 if (ic_send != (iconv_t)-1) {
1378 INIT_CONST_XBUF(outbuf, fbuf);
1380 if (file->dirname) {
1381 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1382 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1383 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1386 fbuf[outbuf.len++] = '/';
1389 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1390 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1392 io_error |= IOERR_GENERAL;
1393 rprintf(FERROR_XFER,
1394 "[%s] cannot convert filename: %s (%s)\n",
1395 who_am_i(), f_name(file, fbuf), strerror(errno));
1398 fbuf[outbuf.len] = '\0';
1400 #ifdef SUPPORT_LINKS
1401 if (symlink_len && sender_symlink_iconv) {
1402 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1403 INIT_CONST_XBUF(outbuf, symlink_buf);
1404 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1405 io_error |= IOERR_GENERAL;
1407 rprintf(FERROR_XFER,
1408 "[%s] cannot convert symlink data for: %s (%s)\n",
1409 who_am_i(), full_fname(fbuf), strerror(errno));
1412 symlink_buf[outbuf.len] = '\0';
1414 symlink_name = symlink_buf;
1415 symlink_len = outbuf.len;
1423 if (preserve_acls && !S_ISLNK(file->mode)) {
1424 sx.st.st_mode = file->mode;
1425 sx.acc_acl = sx.def_acl = NULL;
1426 if (get_acl(fname, &sx) < 0) {
1427 io_error |= IOERR_GENERAL;
1432 #ifdef SUPPORT_XATTRS
1433 if (preserve_xattrs) {
1434 sx.st.st_mode = file->mode;
1436 if (get_xattr(fname, &sx) < 0) {
1437 io_error |= IOERR_GENERAL;
1443 send_file_entry(f, fbuf, file,
1444 #ifdef SUPPORT_LINKS
1445 symlink_name, symlink_len,
1447 flist->used, flist->ndx_start);
1450 if (preserve_acls && !S_ISLNK(file->mode)) {
1455 #ifdef SUPPORT_XATTRS
1456 if (preserve_xattrs) {
1457 F_XATTR(file) = send_xattr(&sx, f);
1463 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1465 flist_expand(flist, 1);
1466 flist->files[flist->used++] = file;
1471 static void send_if_directory(int f, struct file_list *flist,
1472 struct file_struct *file,
1473 char *fbuf, unsigned int ol,
1476 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1478 if (S_ISDIR(file->mode)
1479 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1481 unsigned int len = strlen(fbuf);
1482 if (len > 1 && fbuf[len-1] == '/')
1484 save_filters = push_local_filters(fbuf, len);
1485 send_directory(f, flist, fbuf, len, flags);
1486 pop_local_filters(save_filters);
1493 static int file_compare(const void *file1, const void *file2)
1495 return f_name_cmp(*(struct file_struct **)file1,
1496 *(struct file_struct **)file2);
1499 /* The guts of a merge-sort algorithm. This was derived from the glibc
1500 * version, but I (Wayne) changed the merge code to do less copying and
1501 * to require only half the amount of temporary memory. */
1502 static void fsort_tmp(struct file_struct **fp, size_t num,
1503 struct file_struct **tmp)
1505 struct file_struct **f1, **f2, **t;
1514 fsort_tmp(f1, n1, tmp);
1516 fsort_tmp(f2, n2, tmp);
1518 while (f_name_cmp(*f1, *f2) <= 0) {
1525 memcpy(t, f1, n1 * PTR_SIZE);
1527 *f1++ = *f2++, n2--;
1529 while (n1 > 0 && n2 > 0) {
1530 if (f_name_cmp(*t, *f2) <= 0)
1533 *f1++ = *f2++, n2--;
1537 memcpy(f1, t, n1 * PTR_SIZE);
1540 /* This file-struct sorting routine makes sure that any identical names in
1541 * the file list stay in the same order as they were in the original list.
1542 * This is particularly vital in inc_recurse mode where we expect a sort
1543 * on the flist to match the exact order of a sort on the dir_flist. */
1544 static void fsort(struct file_struct **fp, size_t num)
1550 qsort(fp, num, PTR_SIZE, file_compare);
1552 struct file_struct **tmp = new_array(struct file_struct *,
1554 fsort_tmp(fp, num, tmp);
1559 /* We take an entire set of sibling dirs from the sorted flist and link them
1560 * into the tree, setting the appropriate parent/child/sibling pointers. */
1561 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1566 int32 *parent_dp = parent_ndx < 0 ? NULL
1567 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1569 flist_expand(dir_flist, dir_cnt);
1570 dir_flist->sorted = dir_flist->files;
1572 for (i = 0; dir_cnt; i++) {
1573 struct file_struct *file = from_flist->sorted[i];
1575 if (!S_ISDIR(file->mode))
1578 dir_flist->files[dir_flist->used++] = file;
1581 if (file->basename[0] == '.' && file->basename[1] == '\0')
1585 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1587 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1589 send_dir_ndx = dir_flist->used - 1;
1591 dp = F_DIR_NODE_P(file);
1592 DIR_PARENT(dp) = parent_ndx;
1593 DIR_FIRST_CHILD(dp) = -1;
1596 DIR_NEXT_SIBLING(dp) = -1;
1599 static void interpret_stat_error(const char *fname, int is_dir)
1601 if (errno == ENOENT) {
1602 io_error |= IOERR_VANISHED;
1603 rprintf(FWARNING, "%s has vanished: %s\n",
1604 is_dir ? "directory" : "file", full_fname(fname));
1606 io_error |= IOERR_GENERAL;
1607 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1612 /* This function is normally called by the sender, but the receiving side also
1613 * calls it from get_dirlist() with f set to -1 so that we just construct the
1614 * file list in memory without sending it over the wire. Also, get_dirlist()
1615 * might call this with f set to -2, which also indicates that local filter
1616 * rules should be ignored. */
1617 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1624 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1625 int start = flist->used;
1626 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1628 assert(flist != NULL);
1630 if (!(d = opendir(fbuf))) {
1631 if (errno == ENOENT) {
1632 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1633 interpret_stat_error(fbuf, True);
1636 io_error |= IOERR_GENERAL;
1637 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1642 if (len == 1 && *fbuf == '/')
1643 remainder = MAXPATHLEN - 1;
1644 else if (len < MAXPATHLEN-1) {
1647 remainder = MAXPATHLEN - (len + 1);
1651 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1652 char *dname = d_name(di);
1653 if (dname[0] == '.' && (dname[1] == '\0'
1654 || (dname[1] == '.' && dname[2] == '\0')))
1656 unsigned name_len = strlcpy(p, dname, remainder);
1657 if (name_len >= remainder) {
1658 char save = fbuf[len];
1660 io_error |= IOERR_GENERAL;
1661 rprintf(FERROR_XFER,
1662 "filename overflows max-path len by %u: %s/%s\n",
1663 name_len - remainder + 1, fbuf, dname);
1667 if (dname[0] == '\0') {
1668 io_error |= IOERR_GENERAL;
1669 rprintf(FERROR_XFER,
1670 "cannot send file with empty name in %s\n",
1675 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1681 io_error |= IOERR_GENERAL;
1682 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1687 if (f >= 0 && recurse && !divert_dirs) {
1688 int i, end = flist->used - 1;
1689 /* send_if_directory() bumps flist->used, so use "end". */
1690 for (i = start; i <= end; i++)
1691 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1695 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1696 char *start, char *limit, int flags, char name_type)
1698 static char lastpath[MAXPATHLEN] = "";
1699 static int lastpath_len = 0;
1700 static struct file_struct *lastpath_struct = NULL;
1701 struct file_struct *file;
1702 item_list *relname_list;
1703 relnamecache **rnpp;
1704 int len, need_new_dir, depth = 0;
1705 struct filter_list_struct save_filter_list = filter_list;
1707 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1708 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1711 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1712 && lastpath_len == limit - fname
1713 && strncmp(lastpath, fname, lastpath_len) == 0)
1718 char *tp = fname, *lp = lastpath;
1719 /* Skip any initial directories in our path that we
1720 * have in common with lastpath. */
1721 assert(start == fname);
1722 for ( ; ; tp++, lp++) {
1724 if (*lp == '/' || *lp == '\0')
1739 int save_copy_links = copy_links;
1740 int save_xfer_dirs = xfer_dirs;
1743 copy_links = xfer_dirs = 1;
1747 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1749 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1751 if (!inc_recurse && file && S_ISDIR(file->mode))
1752 change_local_filter_dir(fname, strlen(fname), depth);
1756 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1758 if (file && !S_ISDIR(file->mode))
1760 lastpath_struct = file;
1761 } else if (file && S_ISDIR(file->mode))
1762 change_local_filter_dir(fname, strlen(fname), ++depth);
1764 strlcpy(lastpath, fname, sizeof lastpath);
1765 lastpath_len = limit - fname;
1769 copy_links = save_copy_links;
1770 xfer_dirs = save_xfer_dirs;
1776 if (!lastpath_struct)
1777 goto done; /* dir must have vanished */
1779 len = strlen(limit+1);
1780 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1781 if (!relname_list) {
1782 if (!(relname_list = new0(item_list)))
1783 out_of_memory("send_implied_dirs");
1784 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1786 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1787 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1788 out_of_memory("send_implied_dirs");
1789 (*rnpp)->name_type = name_type;
1790 strlcpy((*rnpp)->fname, limit+1, len + 1);
1793 filter_list = save_filter_list;
1796 static NORETURN void fatal_unsafe_io_error(void)
1798 /* This (sadly) can only happen when pushing data because
1799 * the sender does not know about what kind of delete
1800 * is in effect on the receiving side when pulling. */
1801 rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-during issue with a pre-3.0.7 receiver.\n");
1802 exit_cleanup(RERR_UNSUPPORTED);
1805 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1807 char fbuf[MAXPATHLEN];
1808 item_list *relname_list;
1809 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1813 dlen = strlen(fbuf);
1815 if (!change_pathname(file, NULL, 0))
1816 exit_cleanup(RERR_FILESELECT);
1818 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1820 if (file->flags & FLAG_CONTENT_DIR) {
1821 if (one_file_system) {
1823 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1824 interpret_stat_error(fbuf, True);
1827 filesystem_dev = st.st_dev;
1829 send_directory(f, flist, fbuf, dlen, flags);
1832 if (!relative_paths)
1835 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1839 for (j = 0; j < relname_list->count; j++) {
1841 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1842 char name_type = rnp->name_type;
1845 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1847 if (len >= (int)sizeof fbuf)
1848 continue; /* Impossible... */
1850 slash = strchr(fbuf+dlen+1, '/');
1852 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1856 if (name_type != NORMAL_NAME) {
1858 if (link_stat(fbuf, &st, 1) != 0) {
1859 interpret_stat_error(fbuf, True);
1862 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1864 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1870 void send_extra_file_list(int f, int at_least)
1872 struct file_list *flist;
1875 int old_cnt, save_io_error = io_error;
1880 /* Keep sending data until we have the requested number of
1881 * files in the upcoming file-lists. */
1882 old_cnt = cur_flist->used;
1883 for (flist = first_flist; flist != cur_flist; flist = flist->next)
1884 old_cnt += flist->used;
1885 while (file_total - old_cnt < at_least) {
1886 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1887 int dir_ndx, dstart = dir_count;
1888 const char *pathname = F_PATHNAME(file);
1891 flist = flist_new(0, "send_extra_file_list");
1892 start_write = stats.total_written;
1895 dir_ndx = F_NDX(file);
1897 dir_ndx = send_dir_ndx;
1898 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1899 flist->parent_ndx = dir_ndx;
1901 send1extra(f, file, flist);
1902 prev_flags = file->flags;
1903 dp = F_DIR_NODE_P(file);
1905 /* If there are any duplicate directory names that follow, we
1906 * send all the dirs together in one file-list. The dir_flist
1907 * tree links all the child subdirs onto the last dup dir. */
1908 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1909 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1910 send_dir_ndx = dir_ndx;
1911 file = dir_flist->sorted[dir_ndx];
1912 /* Try to avoid some duplicate scanning of identical dirs. */
1913 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1914 file->flags &= ~FLAG_CONTENT_DIR;
1915 send1extra(f, file, flist);
1916 prev_flags = file->flags;
1917 dp = F_DIR_NODE_P(file);
1920 if (io_error == save_io_error || ignore_errors)
1922 else if (use_safe_inc_flist) {
1923 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
1924 write_varint(f, io_error);
1927 fatal_unsafe_io_error();
1931 if (need_unsorted_flist) {
1932 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1933 out_of_memory("send_extra_file_list");
1934 memcpy(flist->sorted, flist->files,
1935 flist->used * sizeof (struct file_struct*));
1937 flist->sorted = flist->files;
1939 flist_sort_and_clean(flist, 0);
1941 add_dirs_to_tree(send_dir_ndx, flist, dir_count - dstart);
1942 flist_done_allocating(flist);
1944 file_total += flist->used;
1945 stats.flist_size += stats.total_written - start_write;
1946 stats.num_files += flist->used;
1948 output_flist(flist);
1950 if (DIR_FIRST_CHILD(dp) >= 0) {
1951 send_dir_ndx = DIR_FIRST_CHILD(dp);
1954 while (DIR_NEXT_SIBLING(dp) < 0) {
1955 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
1956 write_ndx(f, NDX_FLIST_EOF);
1958 change_local_filter_dir(NULL, 0, 0);
1962 file = dir_flist->sorted[send_dir_ndx];
1963 dp = F_DIR_NODE_P(file);
1965 send_dir_ndx = DIR_NEXT_SIBLING(dp);
1970 if (io_error != save_io_error && !ignore_errors)
1971 send_msg_int(MSG_IO_ERROR, io_error);
1974 struct file_list *send_file_list(int f, int argc, char *argv[])
1976 static const char *lastdir;
1977 static int lastdir_len = -1;
1981 struct file_list *flist;
1982 struct timeval start_tv, end_tv;
1985 int disable_buffering;
1986 int flags = recurse ? FLAG_CONTENT_DIR : 0;
1987 int reading_remotely = filesfrom_host != NULL;
1988 int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
1990 | (filesfrom_convert ? RL_CONVERT : 0)
1992 | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
1993 int implied_dot_dir = 0;
1995 rprintf(FLOG, "building file list\n");
1996 if (show_filelist_p())
1997 start_filelist_progress("building file list");
1998 else if (inc_recurse && verbose && !am_server)
1999 rprintf(FCLIENT, "sending incremental file list\n");
2001 start_write = stats.total_written;
2002 gettimeofday(&start_tv, NULL);
2004 if (relative_paths && protocol_version >= 30)
2005 implied_dirs = 1; /* We send flagged implied dirs */
2007 #ifdef SUPPORT_HARD_LINKS
2008 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2012 flist = cur_flist = flist_new(0, "send_file_list");
2014 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2015 flags |= FLAG_DIVERT_DIRS;
2017 dir_flist = cur_flist;
2019 disable_buffering = io_start_buffering_out(f);
2020 if (filesfrom_fd >= 0) {
2021 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2022 rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2023 full_fname(argv[0]));
2024 exit_cleanup(RERR_FILESELECT);
2030 orig_dir = strdup(curr_dir);
2033 char fbuf[MAXPATHLEN], *fn, name_type;
2036 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2038 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2042 strlcpy(fbuf, *argv++, MAXPATHLEN);
2044 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2048 if (relative_paths) {
2049 /* We clean up fbuf below. */
2050 name_type = NORMAL_NAME;
2051 } else if (!len || fbuf[len - 1] == '/') {
2052 if (len == 2 && fbuf[0] == '.') {
2053 /* Turn "./" into just "." rather than "./." */
2056 if (len + 1 >= MAXPATHLEN)
2057 overflow_exit("send_file_list");
2061 name_type = DOTDIR_NAME;
2062 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2063 && (len == 2 || fbuf[len-3] == '/')) {
2064 if (len + 2 >= MAXPATHLEN)
2065 overflow_exit("send_file_list");
2069 name_type = DOTDIR_NAME;
2070 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2071 name_type = DOTDIR_NAME;
2073 name_type = NORMAL_NAME;
2077 if (!relative_paths) {
2078 p = strrchr(fbuf, '/');
2085 len -= p - fbuf + 1;
2090 if ((p = strstr(fbuf, "/./")) != NULL) {
2096 clean_fname(dir, 0);
2102 *--fn = '\0'; /* ensure room for '.' */
2105 /* A leading ./ can be used in relative mode to affect
2106 * the dest dir without its name being in the path. */
2107 if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2108 send_file_name(f, flist, ".", NULL,
2109 (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2111 implied_dot_dir = 1;
2113 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2114 | CFN_DROP_TRAILING_DOT_DIR);
2119 name_type = DOTDIR_NAME;
2120 } else if (fn[0] == '.')
2121 name_type = DOTDIR_NAME;
2122 } else if (fn[len-1] == '/') {
2124 if (len == 1 && *fn == '.')
2125 name_type = DOTDIR_NAME;
2127 name_type = SLASH_ENDING_NAME;
2129 /* Reject a ".." dir in the active part of the path. */
2130 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2131 if ((p[2] == '/' || p[2] == '\0')
2132 && (p == fn || p[-1] == '/')) {
2134 "found \"..\" dir in relative path: %s\n",
2136 exit_cleanup(RERR_SYNTAX);
2144 name_type = DOTDIR_NAME;
2147 dirlen = dir ? strlen(dir) : 0;
2148 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2149 if (!change_pathname(NULL, dir, -dirlen))
2152 lastdir_len = pathname_len;
2153 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2157 memmove(fbuf, fn, len + 1);
2159 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2160 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2161 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2162 io_error |= IOERR_GENERAL;
2163 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2168 /* A dot-dir should not be excluded! */
2169 if (name_type != DOTDIR_NAME
2170 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2173 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2174 rprintf(FINFO, "skipping directory %s\n", fbuf);
2178 if (inc_recurse && relative_paths && *fbuf) {
2179 if ((p = strchr(fbuf+1, '/')) != NULL) {
2180 if (p - fbuf == 1 && *fbuf == '.') {
2181 if ((fn = strchr(p+1, '/')) != NULL)
2185 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2189 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2190 /* Send the implied directories at the start of the
2191 * source spec, so we get their permissions right. */
2192 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2195 if (one_file_system)
2196 filesystem_dev = st.st_dev;
2198 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2199 struct file_struct *file;
2200 file = send_file_name(f, flist, fbuf, &st,
2201 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2206 if (name_type == DOTDIR_NAME) {
2207 if (send_dir_depth < 0) {
2209 change_local_filter_dir(fbuf, len, send_dir_depth);
2211 send_directory(f, flist, fbuf, len, flags);
2214 send_if_directory(f, flist, file, fbuf, len, flags);
2216 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2219 gettimeofday(&end_tv, NULL);
2220 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2221 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2222 if (stats.flist_buildtime == 0)
2223 stats.flist_buildtime = 1;
2226 /* Indicate end of file list */
2227 if (io_error == 0 || ignore_errors)
2229 else if (use_safe_inc_flist) {
2230 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2231 write_varint(f, io_error);
2233 if (delete_during && inc_recurse)
2234 fatal_unsafe_io_error();
2238 #ifdef SUPPORT_HARD_LINKS
2239 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2243 if (show_filelist_p())
2244 finish_filelist_progress(flist);
2246 gettimeofday(&end_tv, NULL);
2247 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2248 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2250 /* When converting names, both sides keep an unsorted file-list array
2251 * because the names will differ on the sending and receiving sides
2252 * (both sides will use the unsorted index number for each item). */
2254 /* Sort the list without removing any duplicates. This allows the
2255 * receiving side to ask for whatever name it kept. For incremental
2256 * recursion mode, the sender marks duplicate dirs so that it can
2257 * send them together in a single file-list. */
2258 if (need_unsorted_flist) {
2259 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2260 out_of_memory("send_file_list");
2261 memcpy(flist->sorted, flist->files,
2262 flist->used * sizeof (struct file_struct*));
2264 flist->sorted = flist->files;
2265 flist_sort_and_clean(flist, 0);
2266 file_total += flist->used;
2268 if (numeric_ids <= 0 && !inc_recurse)
2273 /* send the io_error flag */
2274 if (protocol_version < 30)
2275 write_int(f, ignore_errors ? 0 : io_error);
2276 else if (!use_safe_inc_flist && io_error && !ignore_errors)
2277 send_msg_int(MSG_IO_ERROR, io_error);
2279 if (disable_buffering)
2280 io_end_buffering_out();
2282 stats.flist_size = stats.total_written - start_write;
2283 stats.num_files = flist->used;
2286 output_flist(flist);
2289 rprintf(FINFO, "send_file_list done\n");
2293 add_dirs_to_tree(-1, flist, dir_count);
2294 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2295 flist->parent_ndx = -1;
2296 flist_done_allocating(flist);
2297 if (send_dir_ndx < 0) {
2298 write_ndx(f, NDX_FLIST_EOF);
2301 else if (file_total == 1) {
2302 /* If we're creating incremental file-lists and there
2303 * was just 1 item in the first file-list, send 1 more
2304 * file-list to check if this is a 1-file xfer. */
2305 send_extra_file_list(f, 1);
2312 struct file_list *recv_file_list(int f)
2314 struct file_list *flist;
2317 int save_verbose = verbose;
2320 rprintf(FLOG, "receiving file list\n");
2321 if (show_filelist_p())
2322 start_filelist_progress("receiving file list");
2323 else if (inc_recurse && verbose && !am_server && !first_flist)
2324 rprintf(FCLIENT, "receiving incremental file list\n");
2326 start_read = stats.total_read;
2328 #ifdef SUPPORT_HARD_LINKS
2329 if (preserve_hard_links && !first_flist)
2333 flist = flist_new(0, "recv_file_list");
2336 if (flist->ndx_start == 1)
2337 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2338 dstart = dir_flist->used;
2344 if (am_server && verbose > 2)
2346 while ((flags = read_byte(f)) != 0) {
2347 struct file_struct *file;
2349 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2350 flags |= read_byte(f) << 8;
2352 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2354 if (!use_safe_inc_flist) {
2355 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2356 exit_cleanup(RERR_PROTOCOL);
2358 err = read_varint(f);
2364 flist_expand(flist, 1);
2365 file = recv_file_entry(flist, flags, f);
2367 if (inc_recurse && S_ISDIR(file->mode)) {
2368 flist_expand(dir_flist, 1);
2369 dir_flist->files[dir_flist->used++] = file;
2372 flist->files[flist->used++] = file;
2374 maybe_emit_filelist_progress(flist->used);
2377 char *name = f_name(file, NULL);
2378 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2381 file_total += flist->used;
2382 verbose = save_verbose;
2385 rprintf(FINFO, "received %d names\n", flist->used);
2387 if (show_filelist_p())
2388 finish_filelist_progress(flist);
2390 if (need_unsorted_flist) {
2391 /* Create an extra array of index pointers that we can sort for
2392 * the generator's use (for wading through the files in sorted
2393 * order and for calling flist_find()). We keep the "files"
2394 * list unsorted for our exchange of index numbers with the
2395 * other side (since their names may not sort the same). */
2396 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2397 out_of_memory("recv_file_list");
2398 memcpy(flist->sorted, flist->files,
2399 flist->used * sizeof (struct file_struct*));
2400 if (inc_recurse && dir_flist->used > dstart) {
2401 static int dir_flist_malloced = 0;
2402 if (dir_flist_malloced < dir_flist->malloced) {
2403 dir_flist->sorted = realloc_array(dir_flist->sorted,
2404 struct file_struct *,
2405 dir_flist->malloced);
2406 dir_flist_malloced = dir_flist->malloced;
2408 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2409 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2410 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2413 flist->sorted = flist->files;
2414 if (inc_recurse && dir_flist->used > dstart) {
2415 dir_flist->sorted = dir_flist->files;
2416 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2421 flist_done_allocating(flist);
2423 recv_id_list(f, flist);
2425 flist_sort_and_clean(flist, relative_paths);
2427 if (protocol_version < 30) {
2428 /* Recv the io_error flag */
2432 io_error |= read_int(f);
2433 } else if (inc_recurse && flist->ndx_start == 1) {
2434 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2435 flist->parent_ndx = -1;
2439 output_flist(flist);
2442 rprintf(FINFO, "recv_file_list done\n");
2444 stats.flist_size += stats.total_read - start_read;
2445 stats.num_files += flist->used;
2450 /* This is only used once by the receiver if the very first file-list
2451 * has exactly one item in it. */
2452 void recv_additional_file_list(int f)
2454 struct file_list *flist;
2455 int ndx = read_ndx(f);
2456 if (ndx == NDX_FLIST_EOF) {
2458 change_local_filter_dir(NULL, 0, 0);
2460 ndx = NDX_FLIST_OFFSET - ndx;
2461 if (ndx < 0 || ndx >= dir_flist->used) {
2462 ndx = NDX_FLIST_OFFSET - ndx;
2464 "[%s] Invalid dir index: %d (%d - %d)\n",
2465 who_am_i(), ndx, NDX_FLIST_OFFSET,
2466 NDX_FLIST_OFFSET - dir_flist->used + 1);
2467 exit_cleanup(RERR_PROTOCOL);
2470 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2473 flist = recv_file_list(f);
2474 flist->parent_ndx = ndx;
2478 /* Search for an identically-named item in the file list. Note that the
2479 * items must agree in their directory-ness, or no match is returned. */
2480 int flist_find(struct file_list *flist, struct file_struct *f)
2482 int low = flist->low, high = flist->high;
2483 int diff, mid, mid_up;
2485 while (low <= high) {
2486 mid = (low + high) / 2;
2487 if (F_IS_ACTIVE(flist->sorted[mid]))
2490 /* Scan for the next non-empty entry using the cached
2491 * distance values. If the value isn't fully up-to-
2492 * date, update it. */
2493 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2494 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2496 mid_up += F_DEPTH(flist->sorted[mid_up]);
2497 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2498 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2500 if (mid_up > high) {
2501 /* If there's nothing left above us, set high to
2502 * a non-empty entry below us and continue. */
2503 high = mid - (int)flist->sorted[mid]->len32;
2504 if (!F_IS_ACTIVE(flist->sorted[high])) {
2506 high -= (int)flist->sorted[high]->len32;
2507 } while (!F_IS_ACTIVE(flist->sorted[high]));
2508 flist->sorted[mid]->len32 = mid - high;
2513 diff = f_name_cmp(flist->sorted[mid_up], f);
2515 if (protocol_version < 29
2516 && S_ISDIR(flist->sorted[mid_up]->mode)
2517 != S_ISDIR(f->mode))
2529 /* Search for an identically-named item in the file list. Differs from
2530 * flist_find in that an item that agrees with "f" in directory-ness is
2531 * preferred but one that does not is still found. */
2532 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2537 /* First look for an item that agrees in directory-ness. */
2538 ndx = flist_find(flist, f);
2542 /* Temporarily flip f->mode to look for an item of opposite
2543 * directory-ness. */
2544 save_mode = f->mode;
2545 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2546 ndx = flist_find(flist, f);
2547 f->mode = save_mode;
2552 * Free up any resources a file_struct has allocated
2553 * and clear the file.
2555 void clear_file(struct file_struct *file)
2557 /* The +1 zeros out the first char of the basename. */
2558 memset(file, 0, FILE_STRUCT_LEN + 1);
2559 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2560 * entry. Likewise for len32 in the opposite direction. We assume
2561 * that we're alone for now since flist_find() will adjust the counts
2562 * it runs into that aren't up-to-date. */
2563 file->len32 = F_DEPTH(file) = 1;
2566 /* Allocate a new file list. */
2567 struct file_list *flist_new(int flags, char *msg)
2569 struct file_list *flist;
2571 if (!(flist = new0(struct file_list)))
2574 if (flags & FLIST_TEMP) {
2575 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2576 out_of_memory, POOL_INTERN)))
2579 /* This is a doubly linked list with prev looping back to
2580 * the end of the list, but the last next pointer is NULL. */
2582 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2583 out_of_memory, POOL_INTERN);
2584 if (!flist->file_pool)
2587 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2589 first_flist = cur_flist = flist->prev = flist;
2591 struct file_list *prev = first_flist->prev;
2593 flist->file_pool = first_flist->file_pool;
2595 flist->ndx_start = prev->ndx_start + prev->used + 1;
2596 flist->flist_num = prev->flist_num + 1;
2599 prev->next = first_flist->prev = flist;
2601 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2608 /* Free up all elements in a flist. */
2609 void flist_free(struct file_list *flist)
2612 /* Was FLIST_TEMP dir-list. */
2613 } else if (flist == flist->prev) {
2614 first_flist = cur_flist = NULL;
2618 if (flist == cur_flist)
2619 cur_flist = flist->next;
2620 if (flist == first_flist)
2621 first_flist = first_flist->next;
2623 flist->prev->next = flist->next;
2625 flist->next = first_flist;
2627 flist->next->prev = flist->prev;
2628 file_total -= flist->used;
2632 if (!flist->prev || !flist_cnt)
2633 pool_destroy(flist->file_pool);
2635 pool_free_old(flist->file_pool, flist->pool_boundary);
2637 if (flist->sorted && flist->sorted != flist->files)
2638 free(flist->sorted);
2643 /* This routine ensures we don't have any duplicate names in our file list.
2644 * duplicate names can cause corruption because of the pipelining. */
2645 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2647 char fbuf[MAXPATHLEN];
2652 if (flist->used == 0) {
2658 fsort(flist->sorted, flist->used);
2660 if (!am_sender || inc_recurse) {
2661 for (i = prev_i = 0; i < flist->used; i++) {
2662 if (F_IS_ACTIVE(flist->sorted[i])) {
2667 flist->low = prev_i;
2669 i = prev_i = flist->used - 1;
2673 while (++i < flist->used) {
2675 struct file_struct *file = flist->sorted[i];
2677 if (!F_IS_ACTIVE(file))
2679 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2681 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2682 int save_mode = file->mode;
2683 /* Make sure that this directory doesn't duplicate a
2684 * non-directory earlier in the list. */
2685 flist->high = prev_i;
2686 file->mode = S_IFREG;
2687 j = flist_find(flist, file);
2688 file->mode = save_mode;
2693 /* If one is a dir and the other is not, we want to
2694 * keep the dir because it might have contents in the
2695 * list. Otherwise keep the first one. */
2696 if (S_ISDIR(file->mode)) {
2697 struct file_struct *fp = flist->sorted[j];
2698 if (!S_ISDIR(fp->mode))
2702 file->flags |= FLAG_DUPLICATE;
2703 else { /* Make sure we merge our vital flags. */
2704 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2705 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2715 "removing duplicate name %s from file list (%d)\n",
2716 f_name(file, fbuf), drop + flist->ndx_start);
2718 clear_file(flist->sorted[drop]);
2722 if (flist->low == drop) {
2724 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2733 flist->high = prev_i;
2736 /* We need to strip off the leading slashes for relative
2737 * paths, but this must be done _after_ the sorting phase. */
2738 for (i = flist->low; i <= flist->high; i++) {
2739 struct file_struct *file = flist->sorted[i];
2743 while (*file->dirname == '/')
2745 if (!*file->dirname)
2746 file->dirname = NULL;
2750 if (prune_empty_dirs && !am_sender) {
2751 int j, prev_depth = 0;
2753 prev_i = 0; /* It's OK that this isn't really true. */
2755 for (i = flist->low; i <= flist->high; i++) {
2756 struct file_struct *fp, *file = flist->sorted[i];
2758 /* This temporarily abuses the F_DEPTH() value for a
2759 * directory that is in a chain that might get pruned.
2760 * We restore the old value if it gets a reprieve. */
2761 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2762 /* Dump empty dirs when coming back down. */
2763 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2764 fp = flist->sorted[prev_i];
2765 if (F_DEPTH(fp) >= 0)
2767 prev_i = -F_DEPTH(fp)-1;
2770 prev_depth = F_DEPTH(file);
2771 if (is_excluded(f_name(file, fbuf), 1,
2773 /* Keep dirs through this dir. */
2774 for (j = prev_depth-1; ; j--) {
2775 fp = flist->sorted[prev_i];
2776 if (F_DEPTH(fp) >= 0)
2778 prev_i = -F_DEPTH(fp)-1;
2782 F_DEPTH(file) = -prev_i-1;
2785 /* Keep dirs through this non-dir. */
2786 for (j = prev_depth; ; j--) {
2787 fp = flist->sorted[prev_i];
2788 if (F_DEPTH(fp) >= 0)
2790 prev_i = -F_DEPTH(fp)-1;
2795 /* Dump all remaining empty dirs. */
2797 struct file_struct *fp = flist->sorted[prev_i];
2798 if (F_DEPTH(fp) >= 0)
2800 prev_i = -F_DEPTH(fp)-1;
2804 for (i = flist->low; i <= flist->high; i++) {
2805 if (F_IS_ACTIVE(flist->sorted[i]))
2809 for (i = flist->high; i >= flist->low; i--) {
2810 if (F_IS_ACTIVE(flist->sorted[i]))
2817 static void output_flist(struct file_list *flist)
2819 char uidbuf[16], gidbuf[16], depthbuf[16];
2820 struct file_struct *file;
2821 const char *root, *dir, *slash, *name, *trail;
2822 const char *who = who_am_i();
2825 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2826 who, flist->ndx_start, flist->used, flist->low, flist->high);
2827 for (i = 0; i < flist->used; i++) {
2828 file = flist->files[i];
2829 if ((am_root || am_sender) && uid_ndx) {
2830 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2835 static char parens[] = "(\0)\0\0\0";
2836 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2837 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2838 pp, F_GROUP(file), pp + 2);
2842 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2843 if (F_IS_ACTIVE(file)) {
2844 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2845 if ((dir = file->dirname) == NULL)
2849 name = file->basename;
2850 trail = S_ISDIR(file->mode) ? "/" : "";
2852 root = dir = slash = name = trail = "";
2854 "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
2855 who, i + flist->ndx_start,
2856 root, dir, slash, name, trail,
2857 (int)file->mode, (double)F_LENGTH(file),
2858 uidbuf, gidbuf, file->flags);
2862 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2863 enum fnc_type { t_PATH, t_ITEM };
2865 static int found_prefix;
2867 /* Compare the names of two file_struct entities, similar to how strcmp()
2868 * would do if it were operating on the joined strings.
2870 * Some differences beginning with protocol_version 29: (1) directory names
2871 * are compared with an assumed trailing slash so that they compare in a
2872 * way that would cause them to sort immediately prior to any content they
2873 * may have; (2) a directory of any name compares after a non-directory of
2874 * any name at the same depth; (3) a directory with name "." compares prior
2875 * to anything else. These changes mean that a directory and a non-dir
2876 * with the same name will not compare as equal (protocol_version >= 29).
2878 * The dirname component can be an empty string, but the basename component
2879 * cannot (and never is in the current codebase). The basename component
2880 * may be NULL (for a removed item), in which case it is considered to be
2881 * after any existing item. */
2882 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2885 const uchar *c1, *c2;
2886 enum fnc_state state1, state2;
2887 enum fnc_type type1, type2;
2888 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2890 if (!f1 || !F_IS_ACTIVE(f1)) {
2891 if (!f2 || !F_IS_ACTIVE(f2))
2895 if (!f2 || !F_IS_ACTIVE(f2))
2898 c1 = (uchar*)f1->dirname;
2899 c2 = (uchar*)f2->dirname;
2903 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2904 c1 = (const uchar*)f1->basename;
2905 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2907 state1 = s_TRAILING;
2916 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2917 c2 = (const uchar*)f2->basename;
2918 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2920 state2 = s_TRAILING;
2930 return type1 == t_PATH ? 1 : -1;
2940 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2941 c1 = (const uchar*)f1->basename;
2942 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2944 state1 = s_TRAILING;
2950 state1 = s_TRAILING;
2951 if (type1 == t_PATH) {
2960 if (*c2 && type1 != type2)
2961 return type1 == t_PATH ? 1 : -1;
2970 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
2971 c2 = (const uchar*)f2->basename;
2972 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
2974 state2 = s_TRAILING;
2980 state2 = s_TRAILING;
2981 if (type2 == t_PATH) {
2994 return type1 == t_PATH ? 1 : -1;
2996 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3001 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3002 * not match if f2's basename is not an exact match of a path element in f1.
3003 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3004 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3008 return found_prefix;
3011 char *f_name_buf(void)
3013 static char names[5][MAXPATHLEN];
3014 static unsigned int n;
3016 n = (n + 1) % (sizeof names / sizeof names[0]);
3021 /* Return a copy of the full filename of a flist entry, using the indicated
3022 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3023 * done because we checked the size when creating the file_struct entry.
3025 char *f_name(const struct file_struct *f, char *fbuf)
3027 if (!f || !F_IS_ACTIVE(f))
3031 fbuf = f_name_buf();
3034 int len = strlen(f->dirname);
3035 memcpy(fbuf, f->dirname, len);
3037 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3039 strlcpy(fbuf, f->basename, MAXPATHLEN);
3044 /* Do a non-recursive scan of the named directory, possibly ignoring all
3045 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3046 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3047 * buffer (the functions we call will append names onto the end, but the old
3048 * dir value will be restored on exit). */
3049 struct file_list *get_dirlist(char *dirname, int dlen, int flags)
3051 struct file_list *dirlist;
3052 char dirbuf[MAXPATHLEN];
3053 int save_recurse = recurse;
3054 int save_xfer_dirs = xfer_dirs;
3055 int save_prune_empty_dirs = prune_empty_dirs;
3056 int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
3059 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3060 if (dlen >= MAXPATHLEN)
3065 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3069 send_directory(senddir_fd, dirlist, dirname, dlen,
3070 FLAG_CONTENT_DIR | (flags & GDL_DEL_NEEDS_UID ? FLAG_DEL_NEEDS_UID : 0));
3071 xfer_dirs = save_xfer_dirs;
3072 recurse = save_recurse;
3074 flist_count_offset += dirlist->used;
3076 prune_empty_dirs = 0;
3077 dirlist->sorted = dirlist->files;
3078 flist_sort_and_clean(dirlist, 0);
3079 prune_empty_dirs = save_prune_empty_dirs;
3082 output_flist(dirlist);