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 always_checksum;
37 extern int ignore_errors;
38 extern int numeric_ids;
42 extern int filesfrom_fd;
43 extern int one_file_system;
44 extern int copy_dirlinks;
45 extern int preserve_uid;
46 extern int preserve_gid;
47 extern int preserve_acls;
48 extern int preserve_xattrs;
49 extern int preserve_links;
50 extern int preserve_hard_links;
51 extern int preserve_devices;
52 extern int preserve_specials;
53 extern int delete_during;
54 extern int missing_args;
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 output_needs_newline;
70 extern int sender_keeps_checksum;
71 extern int unsort_ndx;
72 extern struct stats stats;
73 extern char *filesfrom_host;
74 extern char *usermap, *groupmap;
76 extern char curr_dir[MAXPATHLEN];
78 extern struct chmod_mode_struct *chmod_modes;
80 extern filter_rule_list filter_list;
81 extern filter_rule_list daemon_filter_list;
84 extern int filesfrom_convert;
85 extern iconv_t ic_send, ic_recv;
89 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
90 #define ST_MTIME_NSEC st_mtim.tv_nsec
91 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
92 #define ST_MTIME_NSEC st_mtimensec
96 #define PTR_SIZE (sizeof (struct file_struct *))
100 dev_t filesystem_dev; /* used to implement -x */
102 struct file_list *cur_flist, *first_flist, *dir_flist;
103 int send_dir_ndx = -1, send_dir_depth = -1;
104 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
105 int file_total = 0; /* total of all active items over all file-lists */
106 int file_old_total = 0; /* total of active items that will soon be gone */
107 int flist_eof = 0; /* all the file-lists are now known */
109 #define NORMAL_NAME 0
110 #define SLASH_ENDING_NAME 1
111 #define DOTDIR_NAME 2
113 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
114 * internally, even if this platform does not allow files to have 64-bit inums.
115 * The only exception is if we're on a platform with no 64-bit type at all.
117 * Because we use read_longint() to get these off the wire, if you transfer
118 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
119 * machine with no 64-bit types then you will get an overflow error.
121 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
122 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
123 * be truncated. But it's a kind of silly thing to do anyhow. */
125 /* The tmp_* vars are used as a cache area by make_file() to store data
126 * that the sender doesn't need to remember in its file list. The data
127 * will survive just long enough to be used by send_file_entry(). */
128 static dev_t tmp_rdev;
129 #ifdef SUPPORT_HARD_LINKS
130 static int64 tmp_dev = -1, tmp_ino;
132 static char tmp_sum[MAX_DIGEST_LEN];
134 static char empty_sum[MAX_DIGEST_LEN];
135 static int flist_count_offset; /* for --delete --progress */
137 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
138 static void output_flist(struct file_list *flist);
140 void init_flist(void)
142 if (DEBUG_GTE(FLIST, 4)) {
143 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
144 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
146 checksum_len = protocol_version < 21 ? 2
147 : protocol_version < 30 ? MD4_DIGEST_LEN
151 static int show_filelist_p(void)
153 return INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
156 static void start_filelist_progress(char *kind)
158 rprintf(FCLIENT, "%s ... ", kind);
159 output_needs_newline = 1;
163 static void emit_filelist_progress(int count)
165 rprintf(FCLIENT, " %d files...\r", count);
168 static void maybe_emit_filelist_progress(int count)
170 if (INFO_GTE(FLIST, 2) && show_filelist_p() && (count % 100) == 0)
171 emit_filelist_progress(count);
174 static void finish_filelist_progress(const struct file_list *flist)
176 if (INFO_GTE(FLIST, 2)) {
177 /* This overwrites the progress line */
178 rprintf(FINFO, "%d file%sto consider\n",
179 flist->used, flist->used == 1 ? " " : "s ");
181 output_needs_newline = 0;
182 rprintf(FINFO, "done\n");
186 void show_flist_stats(void)
191 /* Stat either a symlink or its referent, depending on the settings of
192 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
194 * If path is the name of a symlink, then the linkbuf buffer (which must hold
195 * MAXPATHLEN chars) will be set to the symlink's target string.
197 * The stat structure pointed to by stp will contain information about the
198 * link or the referent as appropriate, if they exist. */
199 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
202 if (link_stat(path, stp, copy_dirlinks) < 0)
204 if (S_ISLNK(stp->st_mode)) {
205 int llen = do_readlink(path, linkbuf, MAXPATHLEN - 1);
208 linkbuf[llen] = '\0';
209 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
210 if (INFO_GTE(SYMSAFE, 1)) {
211 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
214 return x_stat(path, stp, NULL);
216 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
217 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
218 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
219 llen - SYMLINK_PREFIX_LEN + 1);
224 return x_stat(path, stp, NULL);
228 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
232 return x_stat(path, stp, NULL);
233 if (x_lstat(path, stp, NULL) < 0)
235 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
237 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
242 return x_stat(path, stp, NULL);
246 static inline int is_daemon_excluded(const char *fname, int is_dir)
248 if (daemon_filter_list.head
249 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
256 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
258 if (daemon_filter_list.head) {
261 while ((slash = strchr(slash+1, '/')) != NULL) {
264 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
273 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
282 /* This function is used to check if a file should be included/excluded
283 * from the list of files based on its name and type etc. The value of
284 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
285 static int is_excluded(const char *fname, int is_dir, int filter_level)
287 #if 0 /* This currently never happens, so avoid a useless compare. */
288 if (filter_level == NO_FILTERS)
291 if (is_daemon_excluded(fname, is_dir))
293 if (filter_level != ALL_FILTERS)
296 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
301 static void send_directory(int f, struct file_list *flist,
302 char *fbuf, int len, int flags);
304 static const char *pathname, *orig_dir;
305 static int pathname_len;
307 /* Make sure flist can hold at least flist->used + extra entries. */
308 static void flist_expand(struct file_list *flist, int extra)
310 struct file_struct **new_ptr;
312 if (flist->used + extra <= flist->malloced)
315 if (flist->malloced < FLIST_START)
316 flist->malloced = FLIST_START;
317 else if (flist->malloced >= FLIST_LINEAR)
318 flist->malloced += FLIST_LINEAR;
320 flist->malloced *= 2;
322 /* In case count jumped or we are starting the list
323 * with a known size just set it. */
324 if (flist->malloced < flist->used + extra)
325 flist->malloced = flist->used + extra;
327 new_ptr = realloc_array(flist->files, struct file_struct *,
330 if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
331 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
333 big_num(sizeof flist->files[0] * flist->malloced),
334 (new_ptr == flist->files) ? " not" : "");
337 flist->files = new_ptr;
340 out_of_memory("flist_expand");
343 static void flist_done_allocating(struct file_list *flist)
345 void *ptr = pool_boundary(flist->file_pool, 8*1024);
346 if (flist->pool_boundary == ptr)
347 flist->pool_boundary = NULL; /* list didn't use any pool memory */
349 flist->pool_boundary = ptr;
352 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
353 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
354 * with dir == NULL taken to be the starting directory, and dirlen < 0
355 * indicating that strdup(dir) should be called and then the -dirlen length
356 * value checked to ensure that it is not daemon-excluded. */
357 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
360 char *cpy = strdup(dir);
362 change_dir(orig_dir, CD_SKIP_CHDIR);
363 if (path_is_daemon_excluded(cpy, 0))
369 if (pathname == F_PATHNAME(file))
371 dir = F_PATHNAME(file);
373 dirlen = strlen(dir);
374 } else if (pathname == dir)
376 if (dir && *dir != '/')
377 change_dir(orig_dir, CD_SKIP_CHDIR);
381 pathname_len = dirlen;
386 if (!change_dir(dir, CD_NORMAL)) {
388 io_error |= IOERR_GENERAL;
389 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
391 change_dir(orig_dir, CD_NORMAL);
400 static void send_file_entry(int f, const char *fname, struct file_struct *file,
402 const char *symlink_name, int symlink_len,
404 int ndx, int first_ndx)
406 static time_t modtime;
408 #ifdef SUPPORT_HARD_LINKS
412 static uint32 rdev_major;
415 static const char *user_name, *group_name;
416 static char lastname[MAXPATHLEN];
417 #ifdef SUPPORT_HARD_LINKS
418 int first_hlink_ndx = -1;
423 /* Initialize starting value of xflags and adjust counts. */
424 if (S_ISREG(file->mode))
426 else if (S_ISDIR(file->mode)) {
428 if (protocol_version >= 30) {
429 if (file->flags & FLAG_CONTENT_DIR)
430 xflags = file->flags & FLAG_TOP_DIR;
431 else if (file->flags & FLAG_IMPLIED_DIR)
432 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
434 xflags = XMIT_NO_CONTENT_DIR;
436 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
438 if (S_ISLNK(file->mode))
439 stats.num_symlinks++;
440 else if (IS_DEVICE(file->mode))
442 else if (IS_SPECIAL(file->mode))
443 stats.num_specials++;
447 if (file->mode == mode)
448 xflags |= XMIT_SAME_MODE;
452 if (preserve_devices && IS_DEVICE(mode)) {
453 if (protocol_version < 28) {
454 if (tmp_rdev == rdev)
455 xflags |= XMIT_SAME_RDEV_pre28;
460 if ((uint32)major(rdev) == rdev_major)
461 xflags |= XMIT_SAME_RDEV_MAJOR;
463 rdev_major = major(rdev);
464 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
465 xflags |= XMIT_RDEV_MINOR_8_pre30;
467 } else if (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31) {
468 /* Special files don't need an rdev number, so just make
469 * the historical transmission of the value efficient. */
470 if (protocol_version < 28)
471 xflags |= XMIT_SAME_RDEV_pre28;
473 rdev = MAKEDEV(major(rdev), 0);
474 xflags |= XMIT_SAME_RDEV_MAJOR;
475 if (protocol_version < 30)
476 xflags |= XMIT_RDEV_MINOR_8_pre30;
478 } else if (protocol_version < 28)
479 rdev = MAKEDEV(0, 0);
480 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
481 xflags |= XMIT_SAME_UID;
485 user_name = add_uid(uid);
486 if (inc_recurse && user_name)
487 xflags |= XMIT_USER_NAME_FOLLOWS;
490 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
491 xflags |= XMIT_SAME_GID;
495 group_name = add_gid(gid);
496 if (inc_recurse && group_name)
497 xflags |= XMIT_GROUP_NAME_FOLLOWS;
500 if (file->modtime == modtime)
501 xflags |= XMIT_SAME_TIME;
503 modtime = file->modtime;
504 if (NSEC_BUMP(file) && protocol_version >= 31)
505 xflags |= XMIT_MOD_NSEC;
507 #ifdef SUPPORT_HARD_LINKS
509 if (protocol_version >= 30) {
510 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
511 first_hlink_ndx = (int32)(long)np->data - 1;
512 if (first_hlink_ndx < 0) {
513 np->data = (void*)(long)(first_ndx + ndx + 1);
514 xflags |= XMIT_HLINK_FIRST;
516 if (DEBUG_GTE(HLINK, 1)) {
517 if (first_hlink_ndx >= 0) {
518 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
519 who_am_i(), first_ndx + ndx, first_hlink_ndx,
520 first_hlink_ndx >= first_ndx ? "" : "un");
521 } else if (DEBUG_GTE(HLINK, 3)) {
522 rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
523 who_am_i(), first_ndx + ndx,
524 big_num(tmp_dev), big_num(tmp_ino));
528 if (tmp_dev == dev) {
529 if (protocol_version >= 28)
530 xflags |= XMIT_SAME_DEV_pre30;
534 xflags |= XMIT_HLINKED;
539 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
541 l2 = strlen(fname+l1);
544 xflags |= XMIT_SAME_NAME;
546 xflags |= XMIT_LONG_NAME;
548 /* We must make sure we don't send a zero flag byte or the
549 * other end will terminate the flist transfer. Note that
550 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
551 * it's harmless way to add a bit to the first flag byte. */
552 if (protocol_version >= 28) {
553 if (!xflags && !S_ISDIR(mode))
554 xflags |= XMIT_TOP_DIR;
555 if ((xflags & 0xFF00) || !xflags) {
556 xflags |= XMIT_EXTENDED_FLAGS;
557 write_shortint(f, xflags);
559 write_byte(f, xflags);
561 if (!(xflags & 0xFF))
562 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
563 write_byte(f, xflags);
565 if (xflags & XMIT_SAME_NAME)
567 if (xflags & XMIT_LONG_NAME)
568 write_varint30(f, l2);
571 write_buf(f, fname + l1, l2);
573 #ifdef SUPPORT_HARD_LINKS
574 if (first_hlink_ndx >= 0) {
575 write_varint(f, first_hlink_ndx);
576 if (first_hlink_ndx >= first_ndx)
581 write_varlong30(f, F_LENGTH(file), 3);
582 if (!(xflags & XMIT_SAME_TIME)) {
583 if (protocol_version >= 30)
584 write_varlong(f, modtime, 4);
586 write_int(f, modtime);
588 if (xflags & XMIT_MOD_NSEC)
589 write_varint(f, F_MOD_NSEC(file));
590 if (!(xflags & XMIT_SAME_MODE))
591 write_int(f, to_wire_mode(mode));
592 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
593 if (protocol_version < 30)
596 write_varint(f, uid);
597 if (xflags & XMIT_USER_NAME_FOLLOWS) {
598 int len = strlen(user_name);
600 write_buf(f, user_name, len);
604 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
605 if (protocol_version < 30)
608 write_varint(f, gid);
609 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
610 int len = strlen(group_name);
612 write_buf(f, group_name, len);
616 if ((preserve_devices && IS_DEVICE(mode))
617 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
618 if (protocol_version < 28) {
619 if (!(xflags & XMIT_SAME_RDEV_pre28))
620 write_int(f, (int)rdev);
622 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
623 write_varint30(f, major(rdev));
624 if (protocol_version >= 30)
625 write_varint(f, minor(rdev));
626 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
627 write_byte(f, minor(rdev));
629 write_int(f, minor(rdev));
635 write_varint30(f, symlink_len);
636 write_buf(f, symlink_name, symlink_len);
640 #ifdef SUPPORT_HARD_LINKS
641 if (tmp_dev != -1 && protocol_version < 30) {
642 /* Older protocols expect the dev number to be transmitted
643 * 1-incremented so that it is never zero. */
644 if (protocol_version < 26) {
645 /* 32-bit dev_t and ino_t */
646 write_int(f, (int32)(dev+1));
647 write_int(f, (int32)tmp_ino);
649 /* 64-bit dev_t and ino_t */
650 if (!(xflags & XMIT_SAME_DEV_pre30))
651 write_longint(f, dev+1);
652 write_longint(f, tmp_ino);
657 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
662 /* Prior to 28, we sent a useless set of nulls. */
665 write_buf(f, sum, checksum_len);
668 #ifdef SUPPORT_HARD_LINKS
671 strlcpy(lastname, fname, MAXPATHLEN);
673 if (S_ISREG(mode) || S_ISLNK(mode))
674 stats.total_size += F_LENGTH(file);
677 static struct file_struct *recv_file_entry(int f, struct file_list *flist, int xflags)
679 static int64 modtime;
681 #ifdef SUPPORT_HARD_LINKS
685 static uint32 rdev_major;
688 static uint16 gid_flags;
689 static char lastname[MAXPATHLEN], *lastdir;
690 static int lastdir_depth, lastdir_len = -1;
691 static unsigned int del_hier_name_len = 0;
692 static int in_del_hier = 0;
693 char thisname[MAXPATHLEN];
694 unsigned int l1 = 0, l2 = 0;
695 int alloc_len, basename_len, linkname_len;
696 int extra_len = file_extra_cnt * EXTRA_LEN;
697 int first_hlink_ndx = -1;
700 const char *basename;
701 struct file_struct *file;
705 if (xflags & XMIT_SAME_NAME)
708 if (xflags & XMIT_LONG_NAME)
709 l2 = read_varint30(f);
713 if (l2 >= MAXPATHLEN - l1) {
715 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
716 xflags, l1, l2, lastname, who_am_i());
717 overflow_exit("recv_file_entry");
720 strlcpy(thisname, lastname, l1 + 1);
721 read_sbuf(f, &thisname[l1], l2);
722 thisname[l1 + l2] = 0;
724 /* Abuse basename_len for a moment... */
725 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
728 if (ic_recv != (iconv_t)-1) {
731 INIT_CONST_XBUF(outbuf, thisname);
732 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
734 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
735 io_error |= IOERR_GENERAL;
737 "[%s] cannot convert filename: %s (%s)\n",
738 who_am_i(), lastname, strerror(errno));
741 thisname[outbuf.len] = '\0';
746 clean_fname(thisname, 0);
749 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
751 if ((basename = strrchr(thisname, '/')) != NULL) {
752 int len = basename++ - thisname;
753 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
754 lastdir = new_array(char, len + 1);
755 memcpy(lastdir, thisname, len);
758 lastdir_depth = count_dir_elements(lastdir);
762 basename_len = strlen(basename) + 1; /* count the '\0' */
764 #ifdef SUPPORT_HARD_LINKS
765 if (protocol_version >= 30
766 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
767 first_hlink_ndx = read_varint(f);
768 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
770 "hard-link reference out of range: %d (%d)\n",
771 first_hlink_ndx, flist->ndx_start + flist->used);
772 exit_cleanup(RERR_PROTOCOL);
774 if (DEBUG_GTE(HLINK, 1)) {
775 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
776 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
777 first_hlink_ndx >= flist->ndx_start ? "" : "un");
779 if (first_hlink_ndx >= flist->ndx_start) {
780 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
781 file_length = F_LENGTH(first);
782 modtime = first->modtime;
783 modtime_nsec = F_MOD_NSEC(first);
786 uid = F_OWNER(first);
788 gid = F_GROUP(first);
789 if (preserve_devices && IS_DEVICE(mode)) {
790 uint32 *devp = F_RDEV_P(first);
791 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
792 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
794 if (preserve_links && S_ISLNK(mode))
795 linkname_len = strlen(F_SYMLINK(first)) + 1;
803 file_length = read_varlong30(f, 3);
804 if (!(xflags & XMIT_SAME_TIME)) {
805 if (protocol_version >= 30) {
806 modtime = read_varlong(f, 4);
807 #if SIZEOF_TIME_T < SIZEOF_INT64
808 if (!am_generator && (int64)(time_t)modtime != modtime) {
810 "Time value of %s truncated on receiver.\n",
815 modtime = read_int(f);
817 if (xflags & XMIT_MOD_NSEC)
818 modtime_nsec = read_varint(f);
821 if (!(xflags & XMIT_SAME_MODE))
822 mode = from_wire_mode(read_int(f));
824 if (chmod_modes && !S_ISLNK(mode) && mode)
825 mode = tweak_mode(mode, chmod_modes);
827 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
828 if (protocol_version < 30)
829 uid = (uid_t)read_int(f);
831 uid = (uid_t)read_varint(f);
832 if (xflags & XMIT_USER_NAME_FOLLOWS)
833 uid = recv_user_name(f, uid);
834 else if (inc_recurse && am_root && (!numeric_ids || usermap))
835 uid = match_uid(uid);
838 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
839 if (protocol_version < 30)
840 gid = (gid_t)read_int(f);
842 gid = (gid_t)read_varint(f);
844 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
845 gid = recv_group_name(f, gid, &gid_flags);
846 else if (inc_recurse && (!am_root || !numeric_ids || groupmap))
847 gid = match_gid(gid, &gid_flags);
851 if ((preserve_devices && IS_DEVICE(mode))
852 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
853 if (protocol_version < 28) {
854 if (!(xflags & XMIT_SAME_RDEV_pre28))
855 rdev = (dev_t)read_int(f);
858 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
859 rdev_major = read_varint30(f);
860 if (protocol_version >= 30)
861 rdev_minor = read_varint(f);
862 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
863 rdev_minor = read_byte(f);
865 rdev_minor = read_int(f);
866 rdev = MAKEDEV(rdev_major, rdev_minor);
869 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
871 } else if (protocol_version < 28)
872 rdev = MAKEDEV(0, 0);
875 if (preserve_links && S_ISLNK(mode)) {
876 linkname_len = read_varint30(f) + 1; /* count the '\0' */
877 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
878 rprintf(FERROR, "overflow: linkname_len=%d\n",
880 overflow_exit("recv_file_entry");
883 /* We don't know how much extra room we need to convert
884 * the as-yet-unread symlink data, so let's hope that a
885 * double-size buffer is plenty. */
886 if (sender_symlink_iconv)
890 linkname_len += SYMLINK_PREFIX_LEN;
896 #ifdef SUPPORT_HARD_LINKS
898 if (preserve_hard_links) {
899 if (protocol_version < 28 && S_ISREG(mode))
900 xflags |= XMIT_HLINKED;
901 if (xflags & XMIT_HLINKED)
902 extra_len += (inc_recurse+1) * EXTRA_LEN;
907 /* Directories need an extra int32 for the default ACL. */
908 if (preserve_acls && S_ISDIR(mode))
909 extra_len += EXTRA_LEN;
912 if (always_checksum && S_ISREG(mode))
913 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
915 #if SIZEOF_INT64 >= 8
916 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
917 extra_len += EXTRA_LEN;
919 #ifdef HAVE_UTIMENSAT
921 extra_len += EXTRA_LEN;
923 if (file_length < 0) {
924 rprintf(FERROR, "Offset underflow: file-length is negative\n");
925 exit_cleanup(RERR_UNSUPPORTED);
928 if (inc_recurse && S_ISDIR(mode)) {
929 if (one_file_system) {
930 /* Room to save the dir's device for -x */
931 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
933 pool = dir_flist->file_pool;
935 pool = flist->file_pool;
937 #if EXTRA_ROUNDING > 0
938 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
939 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
942 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
944 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
946 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
948 file = (struct file_struct *)bp;
949 bp += FILE_STRUCT_LEN;
951 memcpy(bp, basename, basename_len);
953 #ifdef SUPPORT_HARD_LINKS
954 if (xflags & XMIT_HLINKED)
955 file->flags |= FLAG_HLINKED;
957 file->modtime = (time_t)modtime;
958 #ifdef HAVE_UTIMENSAT
960 file->flags |= FLAG_MOD_NSEC;
961 OPT_EXTRA(file, 0)->unum = modtime_nsec;
964 file->len32 = (uint32)file_length;
965 #if SIZEOF_INT64 >= 8
966 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
967 #if SIZEOF_CAPITAL_OFF_T < 8
968 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
969 exit_cleanup(RERR_UNSUPPORTED);
971 file->flags |= FLAG_LENGTH64;
972 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(file_length >> 32);
981 file->flags |= gid_flags;
984 F_NDX(file) = flist->used + flist->ndx_start;
986 if (basename != thisname) {
987 file->dirname = lastdir;
988 F_DEPTH(file) = lastdir_depth + 1;
993 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
995 if (protocol_version >= 30) {
996 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
997 if (xflags & XMIT_TOP_DIR)
998 file->flags |= FLAG_TOP_DIR;
999 file->flags |= FLAG_CONTENT_DIR;
1000 } else if (xflags & XMIT_TOP_DIR)
1001 file->flags |= FLAG_IMPLIED_DIR;
1002 } else if (xflags & XMIT_TOP_DIR) {
1003 in_del_hier = recurse;
1004 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
1005 if (relative_paths && del_hier_name_len > 2
1006 && lastname[del_hier_name_len-1] == '.'
1007 && lastname[del_hier_name_len-2] == '/')
1008 del_hier_name_len -= 2;
1009 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
1010 } else if (in_del_hier) {
1011 if (!relative_paths || !del_hier_name_len
1012 || (l1 >= del_hier_name_len
1013 && lastname[del_hier_name_len] == '/'))
1014 file->flags |= FLAG_CONTENT_DIR;
1020 if (preserve_devices && IS_DEVICE(mode)) {
1021 uint32 *devp = F_RDEV_P(file);
1022 DEV_MAJOR(devp) = major(rdev);
1023 DEV_MINOR(devp) = minor(rdev);
1026 #ifdef SUPPORT_LINKS
1029 if (first_hlink_ndx >= flist->ndx_start) {
1030 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1031 memcpy(bp, F_SYMLINK(first), linkname_len);
1033 if (munge_symlinks) {
1034 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
1035 bp += SYMLINK_PREFIX_LEN;
1036 linkname_len -= SYMLINK_PREFIX_LEN;
1039 if (sender_symlink_iconv) {
1042 alloc_len = linkname_len;
1045 /* Read the symlink data into the end of our double-sized
1046 * buffer and then convert it into the right spot. */
1047 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
1048 linkname_len - 1, (size_t)-1);
1049 read_sbuf(f, inbuf.buf, inbuf.len);
1050 INIT_XBUF(outbuf, bp, 0, alloc_len);
1052 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
1053 io_error |= IOERR_GENERAL;
1054 rprintf(FERROR_XFER,
1055 "[%s] cannot convert symlink data for: %s (%s)\n",
1056 who_am_i(), full_fname(thisname), strerror(errno));
1057 bp = (char*)file->basename;
1061 bp[outbuf.len] = '\0';
1064 read_sbuf(f, bp, linkname_len - 1);
1065 if (sanitize_paths && !munge_symlinks && *bp)
1066 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1071 #ifdef SUPPORT_HARD_LINKS
1072 if (preserve_hard_links && xflags & XMIT_HLINKED) {
1073 if (protocol_version >= 30) {
1074 if (xflags & XMIT_HLINK_FIRST) {
1075 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1077 F_HL_GNUM(file) = first_hlink_ndx;
1079 static int32 cnt = 0;
1080 struct ht_int64_node *np;
1083 if (protocol_version < 26) {
1087 if (!(xflags & XMIT_SAME_DEV_pre30))
1088 dev = read_longint(f);
1089 ino = read_longint(f);
1091 np = idev_find(dev, ino);
1092 ndx = (int32)(long)np->data - 1;
1095 np->data = (void*)(long)cnt;
1097 F_HL_GNUM(file) = ndx;
1102 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1106 /* Prior to 28, we get a useless set of nulls. */
1109 if (first_hlink_ndx >= flist->ndx_start) {
1110 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1111 memcpy(bp, F_SUM(first), checksum_len);
1113 read_buf(f, bp, checksum_len);
1117 if (preserve_acls && !S_ISLNK(mode))
1118 receive_acl(f, file);
1120 #ifdef SUPPORT_XATTRS
1121 if (preserve_xattrs)
1122 receive_xattr(f, file);
1125 if (S_ISREG(mode) || S_ISLNK(mode))
1126 stats.total_size += file_length;
1131 /* Create a file_struct for a named file by reading its stat() information
1132 * and performing extensive checks against global options.
1134 * Returns a pointer to the new file struct, or NULL if there was an error
1135 * or this file should be excluded.
1137 * Note: Any error (here or in send_file_name) that results in the omission of
1138 * an existent source file from the file list should set
1139 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1140 * destination if --delete is on. */
1141 struct file_struct *make_file(const char *fname, struct file_list *flist,
1142 STRUCT_STAT *stp, int flags, int filter_level)
1144 static char *lastdir;
1145 static int lastdir_len = -1;
1146 struct file_struct *file;
1147 char thisname[MAXPATHLEN];
1148 char linkname[MAXPATHLEN];
1149 int alloc_len, basename_len, linkname_len;
1150 int extra_len = file_extra_cnt * EXTRA_LEN;
1151 const char *basename;
1156 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1157 io_error |= IOERR_GENERAL;
1158 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1161 clean_fname(thisname, 0);
1163 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1165 if (stp && (S_ISDIR(stp->st_mode) || stp->st_mode == 0)) {
1166 /* This is needed to handle a "symlink/." with a --relative
1167 * dir, or a request to delete a specific file. */
1169 *linkname = '\0'; /* make IBM code checker happy */
1170 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1171 int save_errno = errno;
1172 /* See if file is excluded before reporting an error. */
1173 if (filter_level != NO_FILTERS
1174 && (is_excluded(thisname, 0, filter_level)
1175 || is_excluded(thisname, 1, filter_level))) {
1176 if (ignore_perishable && save_errno != ENOENT)
1177 non_perishable_cnt++;
1180 if (save_errno == ENOENT) {
1181 #ifdef SUPPORT_LINKS
1182 /* When our options tell us to follow a symlink that
1183 * points nowhere, tell the user about the symlink
1184 * instead of giving a "vanished" message. We only
1185 * dereference a symlink if one of the --copy*links
1186 * options was specified, so there's no need for the
1187 * extra lstat() if one of these options isn't on. */
1188 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1189 && x_lstat(thisname, &st, NULL) == 0
1190 && S_ISLNK(st.st_mode)) {
1191 io_error |= IOERR_GENERAL;
1192 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1193 full_fname(thisname));
1197 enum logcode c = am_daemon && protocol_version < 28
1198 ? FERROR : FWARNING;
1199 io_error |= IOERR_VANISHED;
1200 rprintf(c, "file has vanished: %s\n",
1201 full_fname(thisname));
1204 io_error |= IOERR_GENERAL;
1205 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1206 full_fname(thisname));
1209 } else if (st.st_mode == 0) {
1210 io_error |= IOERR_GENERAL;
1211 rprintf(FINFO, "skipping file with bogus (zero) st_mode: %s\n",
1212 full_fname(thisname));
1216 if (filter_level == NO_FILTERS)
1219 if (S_ISDIR(st.st_mode)) {
1221 rprintf(FINFO, "skipping directory %s\n", thisname);
1224 /* -x only affects dirs because we need to avoid recursing
1225 * into a mount-point directory, not to avoid copying a
1226 * symlinked file if -L (or similar) was specified. */
1227 if (one_file_system && st.st_dev != filesystem_dev
1228 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1229 if (one_file_system > 1) {
1230 if (INFO_GTE(MOUNT, 1)) {
1232 "[%s] skipping mount-point dir %s\n",
1233 who_am_i(), thisname);
1237 flags |= FLAG_MOUNT_DIR;
1238 flags &= ~FLAG_CONTENT_DIR;
1241 flags &= ~FLAG_CONTENT_DIR;
1243 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1244 if (ignore_perishable)
1245 non_perishable_cnt++;
1249 if (lp_ignore_nonreadable(module_id)) {
1250 #ifdef SUPPORT_LINKS
1251 if (!S_ISLNK(st.st_mode))
1253 if (access(thisname, R_OK) != 0)
1259 /* Only divert a directory in the main transfer. */
1261 if (flist->prev && S_ISDIR(st.st_mode)
1262 && flags & FLAG_DIVERT_DIRS) {
1263 /* Room for parent/sibling/next-child info. */
1264 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1266 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1267 pool = dir_flist->file_pool;
1269 pool = flist->file_pool;
1272 /* Directories need an extra int32 for the default ACL. */
1273 if (preserve_acls && S_ISDIR(st.st_mode))
1274 extra_len += EXTRA_LEN;
1279 if (DEBUG_GTE(FLIST, 2)) {
1280 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1281 who_am_i(), thisname, filter_level);
1284 if ((basename = strrchr(thisname, '/')) != NULL) {
1285 int len = basename++ - thisname;
1286 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1287 lastdir = new_array(char, len + 1);
1288 memcpy(lastdir, thisname, len);
1289 lastdir[len] = '\0';
1293 basename = thisname;
1294 basename_len = strlen(basename) + 1; /* count the '\0' */
1296 #ifdef SUPPORT_LINKS
1297 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1302 #ifdef ST_MTIME_NSEC
1303 if (st.ST_MTIME_NSEC && protocol_version >= 31)
1304 extra_len += EXTRA_LEN;
1306 #if SIZEOF_CAPITAL_OFF_T >= 8
1307 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1308 extra_len += EXTRA_LEN;
1311 if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1312 file_checksum(thisname, tmp_sum, st.st_size);
1313 if (sender_keeps_checksum)
1314 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1317 #if EXTRA_ROUNDING > 0
1318 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1319 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1322 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1325 bp = pool_alloc(pool, alloc_len, "make_file");
1327 if (!(bp = new_array(char, alloc_len)))
1328 out_of_memory("make_file");
1331 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1333 file = (struct file_struct *)bp;
1334 bp += FILE_STRUCT_LEN;
1336 memcpy(bp, basename, basename_len);
1338 #ifdef SUPPORT_HARD_LINKS
1339 if (preserve_hard_links && flist && flist->prev) {
1340 if (protocol_version >= 28
1341 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1342 : S_ISREG(st.st_mode)) {
1343 tmp_dev = (int64)st.st_dev;
1344 tmp_ino = (int64)st.st_ino;
1350 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1351 if (IS_DEVICE(st.st_mode)) {
1352 tmp_rdev = st.st_rdev;
1354 } else if (IS_SPECIAL(st.st_mode))
1358 file->flags = flags;
1359 file->modtime = st.st_mtime;
1360 #ifdef ST_MTIME_NSEC
1361 if (st.ST_MTIME_NSEC && protocol_version >= 31) {
1362 file->flags |= FLAG_MOD_NSEC;
1363 OPT_EXTRA(file, 0)->unum = st.ST_MTIME_NSEC;
1366 file->len32 = (uint32)st.st_size;
1367 #if SIZEOF_CAPITAL_OFF_T >= 8
1368 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1369 file->flags |= FLAG_LENGTH64;
1370 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(st.st_size >> 32);
1373 file->mode = st.st_mode;
1374 if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1375 F_OWNER(file) = st.st_uid;
1376 if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1377 F_GROUP(file) = st.st_gid;
1379 if (basename != thisname)
1380 file->dirname = lastdir;
1382 #ifdef SUPPORT_LINKS
1384 memcpy(bp + basename_len, linkname, linkname_len);
1388 F_PATHNAME(file) = pathname;
1390 F_DEPTH(file) = extra_len / EXTRA_LEN;
1392 if (basename_len == 0+1) {
1398 if (sender_keeps_checksum && S_ISREG(st.st_mode))
1399 memcpy(F_SUM(file), tmp_sum, checksum_len);
1402 F_NDX(file) = stats.num_dirs;
1407 /* Only called for temporary file_struct entries created by make_file(). */
1408 void unmake_file(struct file_struct *file)
1410 free(REQ_EXTRA(file, F_DEPTH(file)));
1413 static struct file_struct *send_file_name(int f, struct file_list *flist,
1414 const char *fname, STRUCT_STAT *stp,
1415 int flags, int filter_level)
1417 struct file_struct *file;
1419 file = make_file(fname, flist, stp, flags, filter_level);
1423 if (chmod_modes && !S_ISLNK(file->mode) && file->mode)
1424 file->mode = tweak_mode(file->mode, chmod_modes);
1427 char fbuf[MAXPATHLEN];
1428 #ifdef SUPPORT_LINKS
1429 const char *symlink_name;
1432 char symlink_buf[MAXPATHLEN];
1435 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1440 #ifdef SUPPORT_LINKS
1441 if (preserve_links && S_ISLNK(file->mode)) {
1442 symlink_name = F_SYMLINK(file);
1443 symlink_len = strlen(symlink_name);
1444 if (symlink_len == 0) {
1445 io_error |= IOERR_GENERAL;
1447 rprintf(FERROR_XFER,
1448 "skipping symlink with 0-length value: %s\n",
1453 symlink_name = NULL;
1459 if (ic_send != (iconv_t)-1) {
1462 INIT_CONST_XBUF(outbuf, fbuf);
1464 if (file->dirname) {
1465 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1466 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1467 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0)
1470 fbuf[outbuf.len++] = '/';
1473 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1474 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1476 io_error |= IOERR_GENERAL;
1477 rprintf(FERROR_XFER,
1478 "[%s] cannot convert filename: %s (%s)\n",
1479 who_am_i(), f_name(file, fbuf), strerror(errno));
1482 fbuf[outbuf.len] = '\0';
1484 #ifdef SUPPORT_LINKS
1485 if (symlink_len && sender_symlink_iconv) {
1486 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1487 INIT_CONST_XBUF(outbuf, symlink_buf);
1488 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1489 io_error |= IOERR_GENERAL;
1491 rprintf(FERROR_XFER,
1492 "[%s] cannot convert symlink data for: %s (%s)\n",
1493 who_am_i(), full_fname(fbuf), strerror(errno));
1496 symlink_buf[outbuf.len] = '\0';
1498 symlink_name = symlink_buf;
1499 symlink_len = outbuf.len;
1507 if (preserve_acls && !S_ISLNK(file->mode)) {
1508 sx.st.st_mode = file->mode;
1509 if (get_acl(fname, &sx) < 0) {
1510 io_error |= IOERR_GENERAL;
1515 #ifdef SUPPORT_XATTRS
1516 if (preserve_xattrs) {
1517 sx.st.st_mode = file->mode;
1518 if (get_xattr(fname, &sx) < 0) {
1519 io_error |= IOERR_GENERAL;
1525 send_file_entry(f, fbuf, file,
1526 #ifdef SUPPORT_LINKS
1527 symlink_name, symlink_len,
1529 flist->used, flist->ndx_start);
1532 if (preserve_acls && !S_ISLNK(file->mode)) {
1537 #ifdef SUPPORT_XATTRS
1538 if (preserve_xattrs) {
1539 F_XATTR(file) = send_xattr(f, &sx);
1545 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1547 flist_expand(flist, 1);
1548 flist->files[flist->used++] = file;
1553 static void send_if_directory(int f, struct file_list *flist,
1554 struct file_struct *file,
1555 char *fbuf, unsigned int ol,
1558 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1560 if (S_ISDIR(file->mode)
1561 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1563 unsigned int len = strlen(fbuf);
1564 if (len > 1 && fbuf[len-1] == '/')
1566 save_filters = push_local_filters(fbuf, len);
1567 send_directory(f, flist, fbuf, len, flags);
1568 pop_local_filters(save_filters);
1575 static int file_compare(const void *file1, const void *file2)
1577 return f_name_cmp(*(struct file_struct **)file1,
1578 *(struct file_struct **)file2);
1581 /* The guts of a merge-sort algorithm. This was derived from the glibc
1582 * version, but I (Wayne) changed the merge code to do less copying and
1583 * to require only half the amount of temporary memory. */
1584 static void fsort_tmp(struct file_struct **fp, size_t num,
1585 struct file_struct **tmp)
1587 struct file_struct **f1, **f2, **t;
1596 fsort_tmp(f1, n1, tmp);
1598 fsort_tmp(f2, n2, tmp);
1600 while (f_name_cmp(*f1, *f2) <= 0) {
1607 memcpy(t, f1, n1 * PTR_SIZE);
1609 *f1++ = *f2++, n2--;
1611 while (n1 > 0 && n2 > 0) {
1612 if (f_name_cmp(*t, *f2) <= 0)
1615 *f1++ = *f2++, n2--;
1619 memcpy(f1, t, n1 * PTR_SIZE);
1622 /* This file-struct sorting routine makes sure that any identical names in
1623 * the file list stay in the same order as they were in the original list.
1624 * This is particularly vital in inc_recurse mode where we expect a sort
1625 * on the flist to match the exact order of a sort on the dir_flist. */
1626 static void fsort(struct file_struct **fp, size_t num)
1632 qsort(fp, num, PTR_SIZE, file_compare);
1634 struct file_struct **tmp = new_array(struct file_struct *,
1636 fsort_tmp(fp, num, tmp);
1641 /* We take an entire set of sibling dirs from the sorted flist and link them
1642 * into the tree, setting the appropriate parent/child/sibling pointers. */
1643 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1648 int32 *parent_dp = parent_ndx < 0 ? NULL
1649 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1651 flist_expand(dir_flist, dir_cnt);
1652 dir_flist->sorted = dir_flist->files;
1654 for (i = 0; dir_cnt; i++) {
1655 struct file_struct *file = from_flist->sorted[i];
1657 if (!S_ISDIR(file->mode))
1660 dir_flist->files[dir_flist->used++] = file;
1663 if (file->basename[0] == '.' && file->basename[1] == '\0')
1667 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1669 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1671 send_dir_ndx = dir_flist->used - 1;
1673 dp = F_DIR_NODE_P(file);
1674 DIR_PARENT(dp) = parent_ndx;
1675 DIR_FIRST_CHILD(dp) = -1;
1678 DIR_NEXT_SIBLING(dp) = -1;
1681 static void interpret_stat_error(const char *fname, int is_dir)
1683 if (errno == ENOENT) {
1684 io_error |= IOERR_VANISHED;
1685 rprintf(FWARNING, "%s has vanished: %s\n",
1686 is_dir ? "directory" : "file", full_fname(fname));
1688 io_error |= IOERR_GENERAL;
1689 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1694 /* This function is normally called by the sender, but the receiving side also
1695 * calls it from get_dirlist() with f set to -1 so that we just construct the
1696 * file list in memory without sending it over the wire. Also, get_dirlist()
1697 * might call this with f set to -2, which also indicates that local filter
1698 * rules should be ignored. */
1699 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1706 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1707 int start = flist->used;
1708 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1710 assert(flist != NULL);
1712 if (!(d = opendir(fbuf))) {
1713 if (errno == ENOENT) {
1714 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1715 interpret_stat_error(fbuf, True);
1718 io_error |= IOERR_GENERAL;
1719 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1724 if (len == 1 && *fbuf == '/')
1725 remainder = MAXPATHLEN - 1;
1726 else if (len < MAXPATHLEN-1) {
1729 remainder = MAXPATHLEN - (len + 1);
1733 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1734 char *dname = d_name(di);
1735 if (dname[0] == '.' && (dname[1] == '\0'
1736 || (dname[1] == '.' && dname[2] == '\0')))
1738 unsigned name_len = strlcpy(p, dname, remainder);
1739 if (name_len >= remainder) {
1740 char save = fbuf[len];
1742 io_error |= IOERR_GENERAL;
1743 rprintf(FERROR_XFER,
1744 "filename overflows max-path len by %u: %s/%s\n",
1745 name_len - remainder + 1, fbuf, dname);
1749 if (dname[0] == '\0') {
1750 io_error |= IOERR_GENERAL;
1751 rprintf(FERROR_XFER,
1752 "cannot send file with empty name in %s\n",
1757 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1763 io_error |= IOERR_GENERAL;
1764 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1769 if (f >= 0 && recurse && !divert_dirs) {
1770 int i, end = flist->used - 1;
1771 /* send_if_directory() bumps flist->used, so use "end". */
1772 for (i = start; i <= end; i++)
1773 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1777 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1778 char *start, char *limit, int flags, char name_type)
1780 static char lastpath[MAXPATHLEN] = "";
1781 static int lastpath_len = 0;
1782 static struct file_struct *lastpath_struct = NULL;
1783 struct file_struct *file;
1784 item_list *relname_list;
1785 relnamecache **rnpp;
1786 int len, need_new_dir, depth = 0;
1787 filter_rule_list save_filter_list = filter_list;
1789 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1790 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1793 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1794 && lastpath_len == limit - fname
1795 && strncmp(lastpath, fname, lastpath_len) == 0)
1800 char *tp = fname, *lp = lastpath;
1801 /* Skip any initial directories in our path that we
1802 * have in common with lastpath. */
1803 assert(start == fname);
1804 for ( ; ; tp++, lp++) {
1806 if (*lp == '/' || *lp == '\0')
1821 int save_copy_links = copy_links;
1822 int save_xfer_dirs = xfer_dirs;
1825 copy_links = xfer_dirs = 1;
1829 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1831 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1833 if (!inc_recurse && file && S_ISDIR(file->mode))
1834 change_local_filter_dir(fname, strlen(fname), depth);
1838 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1840 if (file && !S_ISDIR(file->mode))
1842 lastpath_struct = file;
1843 } else if (file && S_ISDIR(file->mode))
1844 change_local_filter_dir(fname, strlen(fname), ++depth);
1846 strlcpy(lastpath, fname, sizeof lastpath);
1847 lastpath_len = limit - fname;
1851 copy_links = save_copy_links;
1852 xfer_dirs = save_xfer_dirs;
1858 if (!lastpath_struct)
1859 goto done; /* dir must have vanished */
1861 len = strlen(limit+1);
1862 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1863 if (!relname_list) {
1864 if (!(relname_list = new0(item_list)))
1865 out_of_memory("send_implied_dirs");
1866 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1868 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1869 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1870 out_of_memory("send_implied_dirs");
1871 (*rnpp)->name_type = name_type;
1872 strlcpy((*rnpp)->fname, limit+1, len + 1);
1875 filter_list = save_filter_list;
1878 static NORETURN void fatal_unsafe_io_error(void)
1880 /* This (sadly) can only happen when pushing data because
1881 * the sender does not know about what kind of delete
1882 * is in effect on the receiving side when pulling. */
1883 rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-during issue with a pre-3.0.7 receiver.\n");
1884 exit_cleanup(RERR_UNSUPPORTED);
1887 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1889 char fbuf[MAXPATHLEN];
1890 item_list *relname_list;
1891 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1895 dlen = strlen(fbuf);
1897 if (!change_pathname(file, NULL, 0))
1898 exit_cleanup(RERR_FILESELECT);
1900 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1902 if (file->flags & FLAG_CONTENT_DIR) {
1903 if (one_file_system) {
1905 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1906 interpret_stat_error(fbuf, True);
1909 filesystem_dev = st.st_dev;
1911 send_directory(f, flist, fbuf, dlen, flags);
1914 if (!relative_paths)
1917 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1921 for (j = 0; j < relname_list->count; j++) {
1923 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1924 char name_type = rnp->name_type;
1927 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1929 if (len >= (int)sizeof fbuf)
1930 continue; /* Impossible... */
1932 slash = strchr(fbuf+dlen+1, '/');
1934 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1938 if (name_type != NORMAL_NAME) {
1940 if (link_stat(fbuf, &st, 1) != 0) {
1941 interpret_stat_error(fbuf, True);
1944 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1946 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1952 void send_extra_file_list(int f, int at_least)
1954 struct file_list *flist;
1957 int save_io_error = io_error;
1963 at_least = file_total - file_old_total + 1;
1965 /* Keep sending data until we have the requested number of
1966 * files in the upcoming file-lists. */
1967 while (file_total - file_old_total < at_least) {
1968 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1969 int dir_ndx, dstart = stats.num_dirs;
1970 const char *pathname = F_PATHNAME(file);
1973 flist = flist_new(0, "send_extra_file_list");
1974 start_write = stats.total_written;
1977 dir_ndx = F_NDX(file);
1979 dir_ndx = send_dir_ndx;
1980 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1981 flist->parent_ndx = dir_ndx;
1983 send1extra(f, file, flist);
1984 prev_flags = file->flags;
1985 dp = F_DIR_NODE_P(file);
1987 /* If there are any duplicate directory names that follow, we
1988 * send all the dirs together in one file-list. The dir_flist
1989 * tree links all the child subdirs onto the last dup dir. */
1990 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1991 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1992 send_dir_ndx = dir_ndx;
1993 file = dir_flist->sorted[dir_ndx];
1994 /* Try to avoid some duplicate scanning of identical dirs. */
1995 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1996 file->flags &= ~FLAG_CONTENT_DIR;
1997 send1extra(f, file, flist);
1998 prev_flags = file->flags;
1999 dp = F_DIR_NODE_P(file);
2002 if (io_error == save_io_error || ignore_errors)
2004 else if (use_safe_inc_flist) {
2005 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2006 write_varint(f, io_error);
2009 fatal_unsafe_io_error();
2013 if (need_unsorted_flist) {
2014 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2015 out_of_memory("send_extra_file_list");
2016 memcpy(flist->sorted, flist->files,
2017 flist->used * sizeof (struct file_struct*));
2019 flist->sorted = flist->files;
2021 flist_sort_and_clean(flist, 0);
2023 add_dirs_to_tree(send_dir_ndx, flist, stats.num_dirs - dstart);
2024 flist_done_allocating(flist);
2026 file_total += flist->used;
2027 stats.flist_size += stats.total_written - start_write;
2028 stats.num_files += flist->used;
2029 if (DEBUG_GTE(FLIST, 3))
2030 output_flist(flist);
2032 if (DIR_FIRST_CHILD(dp) >= 0) {
2033 send_dir_ndx = DIR_FIRST_CHILD(dp);
2036 while (DIR_NEXT_SIBLING(dp) < 0) {
2037 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
2038 write_ndx(f, NDX_FLIST_EOF);
2040 if (DEBUG_GTE(FLIST, 3))
2041 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2042 change_local_filter_dir(NULL, 0, 0);
2046 file = dir_flist->sorted[send_dir_ndx];
2047 dp = F_DIR_NODE_P(file);
2049 send_dir_ndx = DIR_NEXT_SIBLING(dp);
2054 if (io_error != save_io_error && protocol_version == 30 && !ignore_errors)
2055 send_msg_int(MSG_IO_ERROR, io_error);
2058 struct file_list *send_file_list(int f, int argc, char *argv[])
2060 static const char *lastdir;
2061 static int lastdir_len = -1;
2065 struct file_list *flist;
2066 struct timeval start_tv, end_tv;
2069 int disable_buffering, reenable_multiplex = -1;
2070 int flags = recurse ? FLAG_CONTENT_DIR : 0;
2071 int reading_remotely = filesfrom_host != NULL;
2072 int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
2074 | (filesfrom_convert ? RL_CONVERT : 0)
2076 | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
2077 int implied_dot_dir = 0;
2079 rprintf(FLOG, "building file list\n");
2080 if (show_filelist_p())
2081 start_filelist_progress("building file list");
2082 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2083 rprintf(FCLIENT, "sending incremental file list\n");
2085 start_write = stats.total_written;
2086 gettimeofday(&start_tv, NULL);
2088 if (relative_paths && protocol_version >= 30)
2089 implied_dirs = 1; /* We send flagged implied dirs */
2091 #ifdef SUPPORT_HARD_LINKS
2092 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2096 flist = cur_flist = flist_new(0, "send_file_list");
2098 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2099 flags |= FLAG_DIVERT_DIRS;
2101 dir_flist = cur_flist;
2103 disable_buffering = io_start_buffering_out(f);
2104 if (filesfrom_fd >= 0) {
2105 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2106 rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2107 full_fname(argv[0]));
2108 exit_cleanup(RERR_FILESELECT);
2110 if (protocol_version < 31) {
2111 /* Older protocols send the files-from data w/o packaging
2112 * it in multiplexed I/O packets, so temporarily switch
2113 * to buffered I/O to match this behavior. */
2114 reenable_multiplex = io_end_multiplex_in(MPLX_TO_BUFFERED);
2120 orig_dir = strdup(curr_dir);
2123 char fbuf[MAXPATHLEN], *fn, name_type;
2126 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2128 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2132 strlcpy(fbuf, *argv++, MAXPATHLEN);
2134 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2138 if (relative_paths) {
2139 /* We clean up fbuf below. */
2140 name_type = NORMAL_NAME;
2141 } else if (!len || fbuf[len - 1] == '/') {
2142 if (len == 2 && fbuf[0] == '.') {
2143 /* Turn "./" into just "." rather than "./." */
2146 if (len + 1 >= MAXPATHLEN)
2147 overflow_exit("send_file_list");
2151 name_type = DOTDIR_NAME;
2152 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2153 && (len == 2 || fbuf[len-3] == '/')) {
2154 if (len + 2 >= MAXPATHLEN)
2155 overflow_exit("send_file_list");
2159 name_type = DOTDIR_NAME;
2160 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2161 name_type = DOTDIR_NAME;
2163 name_type = NORMAL_NAME;
2167 if (!relative_paths) {
2168 p = strrchr(fbuf, '/');
2175 len -= p - fbuf + 1;
2180 if ((p = strstr(fbuf, "/./")) != NULL) {
2186 clean_fname(dir, 0);
2192 *--fn = '\0'; /* ensure room for '.' */
2195 /* A leading ./ can be used in relative mode to affect
2196 * the dest dir without its name being in the path. */
2197 if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2198 send_file_name(f, flist, ".", NULL,
2199 (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2201 implied_dot_dir = 1;
2203 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2204 | CFN_DROP_TRAILING_DOT_DIR);
2209 name_type = DOTDIR_NAME;
2210 } else if (fn[0] == '.')
2211 name_type = DOTDIR_NAME;
2212 } else if (fn[len-1] == '/') {
2214 if (len == 1 && *fn == '.')
2215 name_type = DOTDIR_NAME;
2217 name_type = SLASH_ENDING_NAME;
2219 /* Reject a ".." dir in the active part of the path. */
2220 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2221 if ((p[2] == '/' || p[2] == '\0')
2222 && (p == fn || p[-1] == '/')) {
2224 "found \"..\" dir in relative path: %s\n",
2226 exit_cleanup(RERR_SYNTAX);
2234 name_type = DOTDIR_NAME;
2237 dirlen = dir ? strlen(dir) : 0;
2238 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2239 if (!change_pathname(NULL, dir, -dirlen))
2242 lastdir_len = pathname_len;
2243 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2247 memmove(fbuf, fn, len + 1);
2249 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2250 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2251 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2252 if (errno != ENOENT || missing_args == 0) {
2253 /* This is a transfer error, but inhibit deletion
2254 * only if we might be omitting an existing file. */
2255 if (errno != ENOENT)
2256 io_error |= IOERR_GENERAL;
2257 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2260 } else if (missing_args == 1) {
2261 /* Just ignore the arg. */
2263 } else /* (missing_args == 2) */ {
2264 /* Send the arg as a "missing" entry with
2265 * mode 0, which tells the generator to delete it. */
2266 memset(&st, 0, sizeof st);
2270 /* A dot-dir should not be excluded! */
2271 if (name_type != DOTDIR_NAME && st.st_mode != 0
2272 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2275 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2276 rprintf(FINFO, "skipping directory %s\n", fbuf);
2280 if (inc_recurse && relative_paths && *fbuf) {
2281 if ((p = strchr(fbuf+1, '/')) != NULL) {
2282 if (p - fbuf == 1 && *fbuf == '.') {
2283 if ((fn = strchr(p+1, '/')) != NULL)
2287 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2291 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2292 /* Send the implied directories at the start of the
2293 * source spec, so we get their permissions right. */
2294 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2297 if (one_file_system)
2298 filesystem_dev = st.st_dev;
2300 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2301 struct file_struct *file;
2302 file = send_file_name(f, flist, fbuf, &st,
2303 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2308 if (name_type == DOTDIR_NAME) {
2309 if (send_dir_depth < 0) {
2311 change_local_filter_dir(fbuf, len, send_dir_depth);
2313 send_directory(f, flist, fbuf, len, flags);
2316 send_if_directory(f, flist, file, fbuf, len, flags);
2318 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2321 if (reenable_multiplex >= 0)
2322 io_start_multiplex_in(reenable_multiplex);
2324 gettimeofday(&end_tv, NULL);
2325 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2326 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2327 if (stats.flist_buildtime == 0)
2328 stats.flist_buildtime = 1;
2331 /* Indicate end of file list */
2332 if (io_error == 0 || ignore_errors)
2334 else if (use_safe_inc_flist) {
2335 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2336 write_varint(f, io_error);
2338 if (delete_during && inc_recurse)
2339 fatal_unsafe_io_error();
2343 #ifdef SUPPORT_HARD_LINKS
2344 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2348 if (show_filelist_p())
2349 finish_filelist_progress(flist);
2351 gettimeofday(&end_tv, NULL);
2352 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2353 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2355 /* When converting names, both sides keep an unsorted file-list array
2356 * because the names will differ on the sending and receiving sides
2357 * (both sides will use the unsorted index number for each item). */
2359 /* Sort the list without removing any duplicates. This allows the
2360 * receiving side to ask for whatever name it kept. For incremental
2361 * recursion mode, the sender marks duplicate dirs so that it can
2362 * send them together in a single file-list. */
2363 if (need_unsorted_flist) {
2364 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2365 out_of_memory("send_file_list");
2366 memcpy(flist->sorted, flist->files,
2367 flist->used * sizeof (struct file_struct*));
2369 flist->sorted = flist->files;
2370 flist_sort_and_clean(flist, 0);
2371 file_total += flist->used;
2372 file_old_total += flist->used;
2374 if (numeric_ids <= 0 && !inc_recurse)
2377 /* send the io_error flag */
2378 if (protocol_version < 30)
2379 write_int(f, ignore_errors ? 0 : io_error);
2380 else if (!use_safe_inc_flist && io_error && !ignore_errors)
2381 send_msg_int(MSG_IO_ERROR, io_error);
2383 if (disable_buffering)
2384 io_end_buffering_out(IOBUF_FREE_BUFS);
2386 stats.flist_size = stats.total_written - start_write;
2387 stats.num_files = flist->used;
2389 if (DEBUG_GTE(FLIST, 3))
2390 output_flist(flist);
2392 if (DEBUG_GTE(FLIST, 2))
2393 rprintf(FINFO, "send_file_list done\n");
2397 add_dirs_to_tree(-1, flist, stats.num_dirs);
2398 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2399 flist->parent_ndx = -1;
2400 flist_done_allocating(flist);
2401 if (send_dir_ndx < 0) {
2402 write_ndx(f, NDX_FLIST_EOF);
2404 if (DEBUG_GTE(FLIST, 3))
2405 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2407 else if (file_total == 1) {
2408 /* If we're creating incremental file-lists and there
2409 * was just 1 item in the first file-list, send 1 more
2410 * file-list to check if this is a 1-file xfer. */
2411 send_extra_file_list(f, 1);
2415 if (DEBUG_GTE(FLIST, 3))
2416 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2422 struct file_list *recv_file_list(int f)
2424 struct file_list *flist;
2429 if (show_filelist_p())
2430 start_filelist_progress("receiving file list");
2431 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2432 rprintf(FCLIENT, "receiving incremental file list\n");
2433 rprintf(FLOG, "receiving file list\n");
2435 parse_name_map(usermap, True);
2437 parse_name_map(groupmap, False);
2440 start_read = stats.total_read;
2442 #ifdef SUPPORT_HARD_LINKS
2443 if (preserve_hard_links && !first_flist)
2447 flist = flist_new(0, "recv_file_list");
2450 if (flist->ndx_start == 1)
2451 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2452 dstart = dir_flist->used;
2458 while ((flags = read_byte(f)) != 0) {
2459 struct file_struct *file;
2461 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2462 flags |= read_byte(f) << 8;
2464 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2466 if (!use_safe_inc_flist) {
2467 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2468 exit_cleanup(RERR_PROTOCOL);
2470 err = read_varint(f);
2476 flist_expand(flist, 1);
2477 file = recv_file_entry(f, flist, flags);
2479 if (S_ISREG(file->mode)) {
2480 /* Already counted */
2481 } else if (S_ISDIR(file->mode)) {
2483 flist_expand(dir_flist, 1);
2484 dir_flist->files[dir_flist->used++] = file;
2487 } else if (S_ISLNK(file->mode))
2488 stats.num_symlinks++;
2489 else if (IS_DEVICE(file->mode))
2490 stats.num_symlinks++;
2492 stats.num_specials++;
2494 flist->files[flist->used++] = file;
2496 maybe_emit_filelist_progress(flist->used);
2498 if (DEBUG_GTE(FLIST, 2)) {
2499 char *name = f_name(file, NULL);
2500 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2503 file_total += flist->used;
2505 if (DEBUG_GTE(FLIST, 2))
2506 rprintf(FINFO, "received %d names\n", flist->used);
2508 if (show_filelist_p())
2509 finish_filelist_progress(flist);
2511 if (need_unsorted_flist) {
2512 /* Create an extra array of index pointers that we can sort for
2513 * the generator's use (for wading through the files in sorted
2514 * order and for calling flist_find()). We keep the "files"
2515 * list unsorted for our exchange of index numbers with the
2516 * other side (since their names may not sort the same). */
2517 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2518 out_of_memory("recv_file_list");
2519 memcpy(flist->sorted, flist->files,
2520 flist->used * sizeof (struct file_struct*));
2521 if (inc_recurse && dir_flist->used > dstart) {
2522 static int dir_flist_malloced = 0;
2523 if (dir_flist_malloced < dir_flist->malloced) {
2524 dir_flist->sorted = realloc_array(dir_flist->sorted,
2525 struct file_struct *,
2526 dir_flist->malloced);
2527 dir_flist_malloced = dir_flist->malloced;
2529 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2530 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2531 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2534 flist->sorted = flist->files;
2535 if (inc_recurse && dir_flist->used > dstart) {
2536 dir_flist->sorted = dir_flist->files;
2537 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2542 flist_done_allocating(flist);
2544 recv_id_list(f, flist);
2546 if (DEBUG_GTE(FLIST, 3))
2547 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2550 flist_sort_and_clean(flist, relative_paths);
2552 if (protocol_version < 30) {
2553 /* Recv the io_error flag */
2554 int err = read_int(f);
2557 } else if (inc_recurse && flist->ndx_start == 1) {
2558 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2559 flist->parent_ndx = -1;
2562 if (DEBUG_GTE(FLIST, 3))
2563 output_flist(flist);
2565 if (DEBUG_GTE(FLIST, 2))
2566 rprintf(FINFO, "recv_file_list done\n");
2568 stats.flist_size += stats.total_read - start_read;
2569 stats.num_files += flist->used;
2574 /* This is only used once by the receiver if the very first file-list
2575 * has exactly one item in it. */
2576 void recv_additional_file_list(int f)
2578 struct file_list *flist;
2579 int ndx = read_ndx(f);
2580 if (ndx == NDX_FLIST_EOF) {
2582 if (DEBUG_GTE(FLIST, 3))
2583 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2584 change_local_filter_dir(NULL, 0, 0);
2586 ndx = NDX_FLIST_OFFSET - ndx;
2587 if (ndx < 0 || ndx >= dir_flist->used) {
2588 ndx = NDX_FLIST_OFFSET - ndx;
2590 "[%s] Invalid dir index: %d (%d - %d)\n",
2591 who_am_i(), ndx, NDX_FLIST_OFFSET,
2592 NDX_FLIST_OFFSET - dir_flist->used + 1);
2593 exit_cleanup(RERR_PROTOCOL);
2595 if (DEBUG_GTE(FLIST, 3)) {
2596 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2599 flist = recv_file_list(f);
2600 flist->parent_ndx = ndx;
2604 /* Search for an identically-named item in the file list. Note that the
2605 * items must agree in their directory-ness, or no match is returned. */
2606 int flist_find(struct file_list *flist, struct file_struct *f)
2608 int low = flist->low, high = flist->high;
2609 int diff, mid, mid_up;
2611 while (low <= high) {
2612 mid = (low + high) / 2;
2613 if (F_IS_ACTIVE(flist->sorted[mid]))
2616 /* Scan for the next non-empty entry using the cached
2617 * distance values. If the value isn't fully up-to-
2618 * date, update it. */
2619 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2620 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2622 mid_up += F_DEPTH(flist->sorted[mid_up]);
2623 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2624 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2626 if (mid_up > high) {
2627 /* If there's nothing left above us, set high to
2628 * a non-empty entry below us and continue. */
2629 high = mid - (int)flist->sorted[mid]->len32;
2630 if (!F_IS_ACTIVE(flist->sorted[high])) {
2632 high -= (int)flist->sorted[high]->len32;
2633 } while (!F_IS_ACTIVE(flist->sorted[high]));
2634 flist->sorted[mid]->len32 = mid - high;
2639 diff = f_name_cmp(flist->sorted[mid_up], f);
2641 if (protocol_version < 29
2642 && S_ISDIR(flist->sorted[mid_up]->mode)
2643 != S_ISDIR(f->mode))
2655 /* Search for an identically-named item in the file list. Differs from
2656 * flist_find in that an item that agrees with "f" in directory-ness is
2657 * preferred but one that does not is still found. */
2658 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2663 /* First look for an item that agrees in directory-ness. */
2664 ndx = flist_find(flist, f);
2668 /* Temporarily flip f->mode to look for an item of opposite
2669 * directory-ness. */
2670 save_mode = f->mode;
2671 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2672 ndx = flist_find(flist, f);
2673 f->mode = save_mode;
2678 * Free up any resources a file_struct has allocated
2679 * and clear the file.
2681 void clear_file(struct file_struct *file)
2683 /* The +1 zeros out the first char of the basename. */
2684 memset(file, 0, FILE_STRUCT_LEN + 1);
2685 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2686 * entry. Likewise for len32 in the opposite direction. We assume
2687 * that we're alone for now since flist_find() will adjust the counts
2688 * it runs into that aren't up-to-date. */
2689 file->len32 = F_DEPTH(file) = 1;
2692 /* Allocate a new file list. */
2693 struct file_list *flist_new(int flags, char *msg)
2695 struct file_list *flist;
2697 if (!(flist = new0(struct file_list)))
2700 if (flags & FLIST_TEMP) {
2701 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2706 /* This is a doubly linked list with prev looping back to
2707 * the end of the list, but the last next pointer is NULL. */
2709 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2712 if (!flist->file_pool)
2715 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2717 first_flist = cur_flist = flist->prev = flist;
2719 struct file_list *prev = first_flist->prev;
2721 flist->file_pool = first_flist->file_pool;
2723 flist->ndx_start = prev->ndx_start + prev->used + 1;
2724 flist->flist_num = prev->flist_num + 1;
2727 prev->next = first_flist->prev = flist;
2729 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2736 /* Free up all elements in a flist. */
2737 void flist_free(struct file_list *flist)
2740 /* Was FLIST_TEMP dir-list. */
2741 } else if (flist == flist->prev) {
2742 first_flist = cur_flist = NULL;
2746 if (flist == cur_flist)
2747 cur_flist = flist->next;
2748 if (flist == first_flist)
2749 first_flist = first_flist->next;
2751 flist->prev->next = flist->next;
2753 flist->next = first_flist;
2755 flist->next->prev = flist->prev;
2756 file_total -= flist->used;
2760 if (!flist->prev || !flist_cnt)
2761 pool_destroy(flist->file_pool);
2763 pool_free_old(flist->file_pool, flist->pool_boundary);
2765 if (flist->sorted && flist->sorted != flist->files)
2766 free(flist->sorted);
2771 /* This routine ensures we don't have any duplicate names in our file list.
2772 * duplicate names can cause corruption because of the pipelining. */
2773 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2775 char fbuf[MAXPATHLEN];
2780 if (flist->used == 0) {
2786 fsort(flist->sorted, flist->used);
2788 if (!am_sender || inc_recurse) {
2789 for (i = prev_i = 0; i < flist->used; i++) {
2790 if (F_IS_ACTIVE(flist->sorted[i])) {
2795 flist->low = prev_i;
2797 i = prev_i = flist->used - 1;
2801 while (++i < flist->used) {
2803 struct file_struct *file = flist->sorted[i];
2805 if (!F_IS_ACTIVE(file))
2807 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2809 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2810 int save_mode = file->mode;
2811 /* Make sure that this directory doesn't duplicate a
2812 * non-directory earlier in the list. */
2813 flist->high = prev_i;
2814 file->mode = S_IFREG;
2815 j = flist_find(flist, file);
2816 file->mode = save_mode;
2821 /* If one is a dir and the other is not, we want to
2822 * keep the dir because it might have contents in the
2823 * list. Otherwise keep the first one. */
2824 if (S_ISDIR(file->mode)) {
2825 struct file_struct *fp = flist->sorted[j];
2826 if (!S_ISDIR(fp->mode))
2830 file->flags |= FLAG_DUPLICATE;
2831 else { /* Make sure we merge our vital flags. */
2832 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2833 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2841 if (DEBUG_GTE(DUP, 1)) {
2843 "removing duplicate name %s from file list (%d)\n",
2844 f_name(file, fbuf), drop + flist->ndx_start);
2846 clear_file(flist->sorted[drop]);
2850 if (flist->low == drop) {
2852 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2861 flist->high = prev_i;
2864 /* We need to strip off the leading slashes for relative
2865 * paths, but this must be done _after_ the sorting phase. */
2866 for (i = flist->low; i <= flist->high; i++) {
2867 struct file_struct *file = flist->sorted[i];
2871 while (*file->dirname == '/')
2873 if (!*file->dirname)
2874 file->dirname = NULL;
2878 if (prune_empty_dirs && !am_sender) {
2879 int j, prev_depth = 0;
2881 prev_i = 0; /* It's OK that this isn't really true. */
2883 for (i = flist->low; i <= flist->high; i++) {
2884 struct file_struct *fp, *file = flist->sorted[i];
2886 /* This temporarily abuses the F_DEPTH() value for a
2887 * directory that is in a chain that might get pruned.
2888 * We restore the old value if it gets a reprieve. */
2889 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2890 /* Dump empty dirs when coming back down. */
2891 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2892 fp = flist->sorted[prev_i];
2893 if (F_DEPTH(fp) >= 0)
2895 prev_i = -F_DEPTH(fp)-1;
2898 prev_depth = F_DEPTH(file);
2899 if (is_excluded(f_name(file, fbuf), 1,
2901 /* Keep dirs through this dir. */
2902 for (j = prev_depth-1; ; j--) {
2903 fp = flist->sorted[prev_i];
2904 if (F_DEPTH(fp) >= 0)
2906 prev_i = -F_DEPTH(fp)-1;
2910 F_DEPTH(file) = -prev_i-1;
2913 /* Keep dirs through this non-dir. */
2914 for (j = prev_depth; ; j--) {
2915 fp = flist->sorted[prev_i];
2916 if (F_DEPTH(fp) >= 0)
2918 prev_i = -F_DEPTH(fp)-1;
2923 /* Dump all remaining empty dirs. */
2925 struct file_struct *fp = flist->sorted[prev_i];
2926 if (F_DEPTH(fp) >= 0)
2928 prev_i = -F_DEPTH(fp)-1;
2932 for (i = flist->low; i <= flist->high; i++) {
2933 if (F_IS_ACTIVE(flist->sorted[i]))
2937 for (i = flist->high; i >= flist->low; i--) {
2938 if (F_IS_ACTIVE(flist->sorted[i]))
2945 static void output_flist(struct file_list *flist)
2947 char uidbuf[16], gidbuf[16], depthbuf[16];
2948 struct file_struct *file;
2949 const char *root, *dir, *slash, *name, *trail;
2950 const char *who = who_am_i();
2953 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2954 who, flist->ndx_start, flist->used, flist->low, flist->high);
2955 for (i = 0; i < flist->used; i++) {
2956 file = flist->files[i];
2957 if ((am_root || am_sender) && uid_ndx) {
2958 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2963 static char parens[] = "(\0)\0\0\0";
2964 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2965 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2966 pp, F_GROUP(file), pp + 2);
2970 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2971 if (F_IS_ACTIVE(file)) {
2972 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2973 if ((dir = file->dirname) == NULL)
2977 name = file->basename;
2978 trail = S_ISDIR(file->mode) ? "/" : "";
2980 root = dir = slash = name = trail = "";
2982 "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2983 who, i + flist->ndx_start,
2984 root, dir, slash, name, trail,
2985 (int)file->mode, comma_num(F_LENGTH(file)),
2986 uidbuf, gidbuf, file->flags);
2990 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2991 enum fnc_type { t_PATH, t_ITEM };
2993 static int found_prefix;
2995 /* Compare the names of two file_struct entities, similar to how strcmp()
2996 * would do if it were operating on the joined strings.
2998 * Some differences beginning with protocol_version 29: (1) directory names
2999 * are compared with an assumed trailing slash so that they compare in a
3000 * way that would cause them to sort immediately prior to any content they
3001 * may have; (2) a directory of any name compares after a non-directory of
3002 * any name at the same depth; (3) a directory with name "." compares prior
3003 * to anything else. These changes mean that a directory and a non-dir
3004 * with the same name will not compare as equal (protocol_version >= 29).
3006 * The dirname component can be an empty string, but the basename component
3007 * cannot (and never is in the current codebase). The basename component
3008 * may be NULL (for a removed item), in which case it is considered to be
3009 * after any existing item. */
3010 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
3013 const uchar *c1, *c2;
3014 enum fnc_state state1, state2;
3015 enum fnc_type type1, type2;
3016 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
3018 if (!f1 || !F_IS_ACTIVE(f1)) {
3019 if (!f2 || !F_IS_ACTIVE(f2))
3023 if (!f2 || !F_IS_ACTIVE(f2))
3026 c1 = (uchar*)f1->dirname;
3027 c2 = (uchar*)f2->dirname;
3031 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3032 c1 = (const uchar*)f1->basename;
3033 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3035 state1 = s_TRAILING;
3044 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3045 c2 = (const uchar*)f2->basename;
3046 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3048 state2 = s_TRAILING;
3058 return type1 == t_PATH ? 1 : -1;
3068 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3069 c1 = (const uchar*)f1->basename;
3070 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3072 state1 = s_TRAILING;
3078 state1 = s_TRAILING;
3079 if (type1 == t_PATH) {
3088 if (*c2 && type1 != type2)
3089 return type1 == t_PATH ? 1 : -1;
3098 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3099 c2 = (const uchar*)f2->basename;
3100 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3102 state2 = s_TRAILING;
3108 state2 = s_TRAILING;
3109 if (type2 == t_PATH) {
3122 return type1 == t_PATH ? 1 : -1;
3124 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3129 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3130 * not match if f2's basename is not an exact match of a path element in f1.
3131 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3132 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3136 return found_prefix;
3139 char *f_name_buf(void)
3141 static char names[5][MAXPATHLEN];
3142 static unsigned int n;
3144 n = (n + 1) % (sizeof names / sizeof names[0]);
3149 /* Return a copy of the full filename of a flist entry, using the indicated
3150 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3151 * done because we checked the size when creating the file_struct entry.
3153 char *f_name(const struct file_struct *f, char *fbuf)
3155 if (!f || !F_IS_ACTIVE(f))
3159 fbuf = f_name_buf();
3162 int len = strlen(f->dirname);
3163 memcpy(fbuf, f->dirname, len);
3165 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3167 strlcpy(fbuf, f->basename, MAXPATHLEN);
3172 /* Do a non-recursive scan of the named directory, possibly ignoring all
3173 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3174 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3175 * buffer (the functions we call will append names onto the end, but the old
3176 * dir value will be restored on exit). */
3177 struct file_list *get_dirlist(char *dirname, int dlen, int flags)
3179 struct file_list *dirlist;
3180 char dirbuf[MAXPATHLEN];
3181 int save_recurse = recurse;
3182 int save_xfer_dirs = xfer_dirs;
3183 int save_prune_empty_dirs = prune_empty_dirs;
3184 int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
3187 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3188 if (dlen >= MAXPATHLEN)
3193 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3197 send_directory(senddir_fd, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
3198 xfer_dirs = save_xfer_dirs;
3199 recurse = save_recurse;
3200 if (INFO_GTE(PROGRESS, 1))
3201 flist_count_offset += dirlist->used;
3203 prune_empty_dirs = 0;
3204 dirlist->sorted = dirlist->files;
3205 flist_sort_and_clean(dirlist, 0);
3206 prune_empty_dirs = save_prune_empty_dirs;
3208 if (DEBUG_GTE(FLIST, 3))
3209 output_flist(dirlist);