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) 2002-2014 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;
73 extern struct stats stats;
74 extern char *filesfrom_host;
75 extern char *usermap, *groupmap;
77 extern char curr_dir[MAXPATHLEN];
79 extern struct chmod_mode_struct *chmod_modes;
81 extern filter_rule_list filter_list;
82 extern filter_rule_list daemon_filter_list;
85 extern int filesfrom_convert;
86 extern iconv_t ic_send, ic_recv;
89 #define PTR_SIZE (sizeof (struct file_struct *))
93 dev_t filesystem_dev; /* used to implement -x */
95 struct file_list *cur_flist, *first_flist, *dir_flist;
96 int send_dir_ndx = -1, send_dir_depth = -1;
97 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
98 int file_total = 0; /* total of all active items over all file-lists */
99 int file_old_total = 0; /* total of active items that will soon be gone */
100 int flist_eof = 0; /* all the file-lists are now known */
102 #define NORMAL_NAME 0
103 #define SLASH_ENDING_NAME 1
104 #define DOTDIR_NAME 2
105 #define MISSING_NAME 3
107 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
108 * internally, even if this platform does not allow files to have 64-bit inums.
109 * The only exception is if we're on a platform with no 64-bit type at all.
111 * Because we use read_longint() to get these off the wire, if you transfer
112 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
113 * machine with no 64-bit types then you will get an overflow error.
115 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
116 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
117 * be truncated. But it's a kind of silly thing to do anyhow. */
119 /* The tmp_* vars are used as a cache area by make_file() to store data
120 * that the sender doesn't need to remember in its file list. The data
121 * will survive just long enough to be used by send_file_entry(). */
122 static dev_t tmp_rdev;
123 #ifdef SUPPORT_HARD_LINKS
124 static int64 tmp_dev = -1, tmp_ino;
126 static char tmp_sum[MAX_DIGEST_LEN];
128 static char empty_sum[MAX_DIGEST_LEN];
129 static int flist_count_offset; /* for --delete --progress */
131 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
132 static void output_flist(struct file_list *flist);
134 void init_flist(void)
136 if (DEBUG_GTE(FLIST, 4)) {
137 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
138 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
140 checksum_len = protocol_version < 21 ? 2
141 : protocol_version < 30 ? MD4_DIGEST_LEN
145 static int show_filelist_p(void)
147 return INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
150 static void start_filelist_progress(char *kind)
152 rprintf(FCLIENT, "%s ... ", kind);
153 output_needs_newline = 1;
157 static void emit_filelist_progress(int count)
159 rprintf(FCLIENT, " %d files...\r", count);
162 static void maybe_emit_filelist_progress(int count)
164 if (INFO_GTE(FLIST, 2) && show_filelist_p() && (count % 100) == 0)
165 emit_filelist_progress(count);
168 static void finish_filelist_progress(const struct file_list *flist)
170 if (INFO_GTE(FLIST, 2)) {
171 /* This overwrites the progress line */
172 rprintf(FINFO, "%d file%sto consider\n",
173 flist->used, flist->used == 1 ? " " : "s ");
175 output_needs_newline = 0;
176 rprintf(FINFO, "done\n");
180 void show_flist_stats(void)
185 /* Stat either a symlink or its referent, depending on the settings of
186 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
188 * If path is the name of a symlink, then the linkbuf buffer (which must hold
189 * MAXPATHLEN chars) will be set to the symlink's target string.
191 * The stat structure pointed to by stp will contain information about the
192 * link or the referent as appropriate, if they exist. */
193 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
196 if (link_stat(path, stp, copy_dirlinks) < 0)
198 if (S_ISLNK(stp->st_mode)) {
199 int llen = do_readlink(path, linkbuf, MAXPATHLEN - 1);
202 linkbuf[llen] = '\0';
203 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
204 if (INFO_GTE(SYMSAFE, 1)) {
205 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
208 return x_stat(path, stp, NULL);
210 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
211 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
212 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
213 llen - SYMLINK_PREFIX_LEN + 1);
218 return x_stat(path, stp, NULL);
222 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
226 return x_stat(path, stp, NULL);
227 if (x_lstat(path, stp, NULL) < 0)
229 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
231 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
236 return x_stat(path, stp, NULL);
240 static inline int is_daemon_excluded(const char *fname, int is_dir)
242 if (daemon_filter_list.head
243 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
250 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
252 if (daemon_filter_list.head) {
255 while ((slash = strchr(slash+1, '/')) != NULL) {
258 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
267 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
276 /* This function is used to check if a file should be included/excluded
277 * from the list of files based on its name and type etc. The value of
278 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
279 static int is_excluded(const char *fname, int is_dir, int filter_level)
281 #if 0 /* This currently never happens, so avoid a useless compare. */
282 if (filter_level == NO_FILTERS)
285 if (is_daemon_excluded(fname, is_dir))
287 if (filter_level != ALL_FILTERS)
290 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
295 static void send_directory(int f, struct file_list *flist,
296 char *fbuf, int len, int flags);
298 static const char *pathname, *orig_dir;
299 static int pathname_len;
301 /* Make sure flist can hold at least flist->used + extra entries. */
302 static void flist_expand(struct file_list *flist, int extra)
304 struct file_struct **new_ptr;
306 if (flist->used + extra <= flist->malloced)
309 if (flist->malloced < FLIST_START)
310 flist->malloced = FLIST_START;
311 else if (flist->malloced >= FLIST_LINEAR)
312 flist->malloced += FLIST_LINEAR;
314 flist->malloced *= 2;
316 /* In case count jumped or we are starting the list
317 * with a known size just set it. */
318 if (flist->malloced < flist->used + extra)
319 flist->malloced = flist->used + extra;
321 new_ptr = realloc_array(flist->files, struct file_struct *,
324 if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
325 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
327 big_num(sizeof flist->files[0] * flist->malloced),
328 (new_ptr == flist->files) ? " not" : "");
331 flist->files = new_ptr;
334 out_of_memory("flist_expand");
337 static void flist_done_allocating(struct file_list *flist)
339 void *ptr = pool_boundary(flist->file_pool, 8*1024);
340 if (flist->pool_boundary == ptr)
341 flist->pool_boundary = NULL; /* list didn't use any pool memory */
343 flist->pool_boundary = ptr;
346 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
347 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
348 * with dir == NULL taken to be the starting directory, and dirlen < 0
349 * indicating that strdup(dir) should be called and then the -dirlen length
350 * value checked to ensure that it is not daemon-excluded. */
351 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
354 char *cpy = strdup(dir);
356 change_dir(orig_dir, CD_SKIP_CHDIR);
357 if (path_is_daemon_excluded(cpy, 0))
363 if (pathname == F_PATHNAME(file))
365 dir = F_PATHNAME(file);
367 dirlen = strlen(dir);
368 } else if (pathname == dir)
370 if (dir && *dir != '/')
371 change_dir(orig_dir, CD_SKIP_CHDIR);
375 pathname_len = dirlen;
380 if (!change_dir(dir, CD_NORMAL)) {
382 io_error |= IOERR_GENERAL;
383 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
385 change_dir(orig_dir, CD_NORMAL);
394 static void send_file_entry(int f, const char *fname, struct file_struct *file,
396 const char *symlink_name, int symlink_len,
398 int ndx, int first_ndx)
400 static time_t modtime;
402 #ifdef SUPPORT_HARD_LINKS
406 static uint32 rdev_major;
409 static const char *user_name, *group_name;
410 static char lastname[MAXPATHLEN];
411 #ifdef SUPPORT_HARD_LINKS
412 int first_hlink_ndx = -1;
417 /* Initialize starting value of xflags and adjust counts. */
418 if (S_ISREG(file->mode))
420 else if (S_ISDIR(file->mode)) {
422 if (protocol_version >= 30) {
423 if (file->flags & FLAG_CONTENT_DIR)
424 xflags = file->flags & FLAG_TOP_DIR;
425 else if (file->flags & FLAG_IMPLIED_DIR)
426 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
428 xflags = XMIT_NO_CONTENT_DIR;
430 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
432 if (S_ISLNK(file->mode))
433 stats.num_symlinks++;
434 else if (IS_DEVICE(file->mode))
436 else if (IS_SPECIAL(file->mode))
437 stats.num_specials++;
441 if (file->mode == mode)
442 xflags |= XMIT_SAME_MODE;
446 if (preserve_devices && IS_DEVICE(mode)) {
447 if (protocol_version < 28) {
448 if (tmp_rdev == rdev)
449 xflags |= XMIT_SAME_RDEV_pre28;
454 if ((uint32)major(rdev) == rdev_major)
455 xflags |= XMIT_SAME_RDEV_MAJOR;
457 rdev_major = major(rdev);
458 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
459 xflags |= XMIT_RDEV_MINOR_8_pre30;
461 } else if (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31) {
462 /* Special files don't need an rdev number, so just make
463 * the historical transmission of the value efficient. */
464 if (protocol_version < 28)
465 xflags |= XMIT_SAME_RDEV_pre28;
467 rdev = MAKEDEV(major(rdev), 0);
468 xflags |= XMIT_SAME_RDEV_MAJOR;
469 if (protocol_version < 30)
470 xflags |= XMIT_RDEV_MINOR_8_pre30;
472 } else if (protocol_version < 28)
473 rdev = MAKEDEV(0, 0);
474 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
475 xflags |= XMIT_SAME_UID;
479 user_name = add_uid(uid);
480 if (inc_recurse && user_name)
481 xflags |= XMIT_USER_NAME_FOLLOWS;
484 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
485 xflags |= XMIT_SAME_GID;
489 group_name = add_gid(gid);
490 if (inc_recurse && group_name)
491 xflags |= XMIT_GROUP_NAME_FOLLOWS;
494 if (file->modtime == modtime)
495 xflags |= XMIT_SAME_TIME;
497 modtime = file->modtime;
498 if (NSEC_BUMP(file) && protocol_version >= 31)
499 xflags |= XMIT_MOD_NSEC;
501 #ifdef SUPPORT_HARD_LINKS
503 if (protocol_version >= 30) {
504 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
505 first_hlink_ndx = (int32)(long)np->data - 1;
506 if (first_hlink_ndx < 0) {
507 np->data = (void*)(long)(first_ndx + ndx + 1);
508 xflags |= XMIT_HLINK_FIRST;
510 if (DEBUG_GTE(HLINK, 1)) {
511 if (first_hlink_ndx >= 0) {
512 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
513 who_am_i(), first_ndx + ndx, first_hlink_ndx,
514 first_hlink_ndx >= first_ndx ? "" : "un");
515 } else if (DEBUG_GTE(HLINK, 3)) {
516 rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
517 who_am_i(), first_ndx + ndx,
518 big_num(tmp_dev), big_num(tmp_ino));
522 if (tmp_dev == dev) {
523 if (protocol_version >= 28)
524 xflags |= XMIT_SAME_DEV_pre30;
528 xflags |= XMIT_HLINKED;
533 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
535 l2 = strlen(fname+l1);
538 xflags |= XMIT_SAME_NAME;
540 xflags |= XMIT_LONG_NAME;
542 /* We must make sure we don't send a zero flag byte or the
543 * other end will terminate the flist transfer. Note that
544 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
545 * it's harmless way to add a bit to the first flag byte. */
546 if (protocol_version >= 28) {
547 if (!xflags && !S_ISDIR(mode))
548 xflags |= XMIT_TOP_DIR;
549 if ((xflags & 0xFF00) || !xflags) {
550 xflags |= XMIT_EXTENDED_FLAGS;
551 write_shortint(f, xflags);
553 write_byte(f, xflags);
555 if (!(xflags & 0xFF))
556 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
557 write_byte(f, xflags);
559 if (xflags & XMIT_SAME_NAME)
561 if (xflags & XMIT_LONG_NAME)
562 write_varint30(f, l2);
565 write_buf(f, fname + l1, l2);
567 #ifdef SUPPORT_HARD_LINKS
568 if (first_hlink_ndx >= 0) {
569 write_varint(f, first_hlink_ndx);
570 if (first_hlink_ndx >= first_ndx)
575 write_varlong30(f, F_LENGTH(file), 3);
576 if (!(xflags & XMIT_SAME_TIME)) {
577 if (protocol_version >= 30)
578 write_varlong(f, modtime, 4);
580 write_int(f, modtime);
582 if (xflags & XMIT_MOD_NSEC)
583 write_varint(f, F_MOD_NSEC(file));
584 if (!(xflags & XMIT_SAME_MODE))
585 write_int(f, to_wire_mode(mode));
586 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
587 if (protocol_version < 30)
590 write_varint(f, uid);
591 if (xflags & XMIT_USER_NAME_FOLLOWS) {
592 int len = strlen(user_name);
594 write_buf(f, user_name, len);
598 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
599 if (protocol_version < 30)
602 write_varint(f, gid);
603 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
604 int len = strlen(group_name);
606 write_buf(f, group_name, len);
610 if ((preserve_devices && IS_DEVICE(mode))
611 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
612 if (protocol_version < 28) {
613 if (!(xflags & XMIT_SAME_RDEV_pre28))
614 write_int(f, (int)rdev);
616 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
617 write_varint30(f, major(rdev));
618 if (protocol_version >= 30)
619 write_varint(f, minor(rdev));
620 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
621 write_byte(f, minor(rdev));
623 write_int(f, minor(rdev));
629 write_varint30(f, symlink_len);
630 write_buf(f, symlink_name, symlink_len);
634 #ifdef SUPPORT_HARD_LINKS
635 if (tmp_dev != -1 && protocol_version < 30) {
636 /* Older protocols expect the dev number to be transmitted
637 * 1-incremented so that it is never zero. */
638 if (protocol_version < 26) {
639 /* 32-bit dev_t and ino_t */
640 write_int(f, (int32)(dev+1));
641 write_int(f, (int32)tmp_ino);
643 /* 64-bit dev_t and ino_t */
644 if (!(xflags & XMIT_SAME_DEV_pre30))
645 write_longint(f, dev+1);
646 write_longint(f, tmp_ino);
651 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
656 /* Prior to 28, we sent a useless set of nulls. */
659 write_buf(f, sum, checksum_len);
662 #ifdef SUPPORT_HARD_LINKS
665 strlcpy(lastname, fname, MAXPATHLEN);
667 if (S_ISREG(mode) || S_ISLNK(mode))
668 stats.total_size += F_LENGTH(file);
671 static struct file_struct *recv_file_entry(int f, struct file_list *flist, int xflags)
673 static int64 modtime;
675 #ifdef SUPPORT_HARD_LINKS
679 static uint32 rdev_major;
682 static uint16 gid_flags;
683 static char lastname[MAXPATHLEN], *lastdir;
684 static int lastdir_depth, lastdir_len = -1;
685 static unsigned int del_hier_name_len = 0;
686 static int in_del_hier = 0;
687 char thisname[MAXPATHLEN];
688 unsigned int l1 = 0, l2 = 0;
689 int alloc_len, basename_len, linkname_len;
690 int extra_len = file_extra_cnt * EXTRA_LEN;
691 int first_hlink_ndx = -1;
694 const char *basename;
695 struct file_struct *file;
699 if (xflags & XMIT_SAME_NAME)
702 if (xflags & XMIT_LONG_NAME)
703 l2 = read_varint30(f);
707 if (l2 >= MAXPATHLEN - l1) {
709 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
710 xflags, l1, l2, lastname, who_am_i());
711 overflow_exit("recv_file_entry");
714 strlcpy(thisname, lastname, l1 + 1);
715 read_sbuf(f, &thisname[l1], l2);
716 thisname[l1 + l2] = 0;
718 /* Abuse basename_len for a moment... */
719 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
722 if (ic_recv != (iconv_t)-1) {
725 INIT_CONST_XBUF(outbuf, thisname);
726 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
728 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
729 io_error |= IOERR_GENERAL;
731 "[%s] cannot convert filename: %s (%s)\n",
732 who_am_i(), lastname, strerror(errno));
735 thisname[outbuf.len] = '\0';
740 clean_fname(thisname, 0);
743 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
745 if ((basename = strrchr(thisname, '/')) != NULL) {
746 int len = basename++ - thisname;
747 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
748 lastdir = new_array(char, len + 1);
749 memcpy(lastdir, thisname, len);
752 lastdir_depth = count_dir_elements(lastdir);
756 basename_len = strlen(basename) + 1; /* count the '\0' */
758 #ifdef SUPPORT_HARD_LINKS
759 if (protocol_version >= 30
760 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
761 first_hlink_ndx = read_varint(f);
762 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
764 "hard-link reference out of range: %d (%d)\n",
765 first_hlink_ndx, flist->ndx_start + flist->used);
766 exit_cleanup(RERR_PROTOCOL);
768 if (DEBUG_GTE(HLINK, 1)) {
769 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
770 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
771 first_hlink_ndx >= flist->ndx_start ? "" : "un");
773 if (first_hlink_ndx >= flist->ndx_start) {
774 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
775 file_length = F_LENGTH(first);
776 modtime = first->modtime;
777 modtime_nsec = F_MOD_NSEC(first);
780 uid = F_OWNER(first);
782 gid = F_GROUP(first);
783 if (preserve_devices && IS_DEVICE(mode)) {
784 uint32 *devp = F_RDEV_P(first);
785 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
786 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
788 if (preserve_links && S_ISLNK(mode))
789 linkname_len = strlen(F_SYMLINK(first)) + 1;
797 file_length = read_varlong30(f, 3);
798 if (!(xflags & XMIT_SAME_TIME)) {
799 if (protocol_version >= 30) {
800 modtime = read_varlong(f, 4);
801 #if SIZEOF_TIME_T < SIZEOF_INT64
802 if (!am_generator && (int64)(time_t)modtime != modtime) {
804 "Time value of %s truncated on receiver.\n",
809 modtime = read_int(f);
811 if (xflags & XMIT_MOD_NSEC)
812 modtime_nsec = read_varint(f);
815 if (!(xflags & XMIT_SAME_MODE))
816 mode = from_wire_mode(read_int(f));
818 if (chmod_modes && !S_ISLNK(mode) && mode)
819 mode = tweak_mode(mode, chmod_modes);
821 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
822 if (protocol_version < 30)
823 uid = (uid_t)read_int(f);
825 uid = (uid_t)read_varint(f);
826 if (xflags & XMIT_USER_NAME_FOLLOWS)
827 uid = recv_user_name(f, uid);
828 else if (inc_recurse && am_root && (!numeric_ids || usermap))
829 uid = match_uid(uid);
832 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
833 if (protocol_version < 30)
834 gid = (gid_t)read_int(f);
836 gid = (gid_t)read_varint(f);
838 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
839 gid = recv_group_name(f, gid, &gid_flags);
840 else if (inc_recurse && (!am_root || !numeric_ids || groupmap))
841 gid = match_gid(gid, &gid_flags);
845 if ((preserve_devices && IS_DEVICE(mode))
846 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
847 if (protocol_version < 28) {
848 if (!(xflags & XMIT_SAME_RDEV_pre28))
849 rdev = (dev_t)read_int(f);
852 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
853 rdev_major = read_varint30(f);
854 if (protocol_version >= 30)
855 rdev_minor = read_varint(f);
856 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
857 rdev_minor = read_byte(f);
859 rdev_minor = read_int(f);
860 rdev = MAKEDEV(rdev_major, rdev_minor);
863 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
865 } else if (protocol_version < 28)
866 rdev = MAKEDEV(0, 0);
869 if (preserve_links && S_ISLNK(mode)) {
870 linkname_len = read_varint30(f) + 1; /* count the '\0' */
871 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
872 rprintf(FERROR, "overflow: linkname_len=%d\n",
874 overflow_exit("recv_file_entry");
877 /* We don't know how much extra room we need to convert
878 * the as-yet-unread symlink data, so let's hope that a
879 * double-size buffer is plenty. */
880 if (sender_symlink_iconv)
884 linkname_len += SYMLINK_PREFIX_LEN;
890 #ifdef SUPPORT_HARD_LINKS
892 if (preserve_hard_links) {
893 if (protocol_version < 28 && S_ISREG(mode))
894 xflags |= XMIT_HLINKED;
895 if (xflags & XMIT_HLINKED)
896 extra_len += (inc_recurse+1) * EXTRA_LEN;
901 /* Directories need an extra int32 for the default ACL. */
902 if (preserve_acls && S_ISDIR(mode))
903 extra_len += EXTRA_LEN;
906 if (always_checksum && S_ISREG(mode))
907 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
909 #if SIZEOF_INT64 >= 8
910 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
911 extra_len += EXTRA_LEN;
913 #ifdef HAVE_UTIMENSAT
915 extra_len += EXTRA_LEN;
917 if (file_length < 0) {
918 rprintf(FERROR, "Offset underflow: file-length is negative\n");
919 exit_cleanup(RERR_UNSUPPORTED);
922 if (inc_recurse && S_ISDIR(mode)) {
923 if (one_file_system) {
924 /* Room to save the dir's device for -x */
925 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
927 pool = dir_flist->file_pool;
929 pool = flist->file_pool;
931 #if EXTRA_ROUNDING > 0
932 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
933 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
936 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
938 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
940 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
942 file = (struct file_struct *)bp;
943 bp += FILE_STRUCT_LEN;
945 memcpy(bp, basename, basename_len);
947 #ifdef SUPPORT_HARD_LINKS
948 if (xflags & XMIT_HLINKED)
949 file->flags |= FLAG_HLINKED;
951 file->modtime = (time_t)modtime;
952 #ifdef HAVE_UTIMENSAT
954 file->flags |= FLAG_MOD_NSEC;
955 OPT_EXTRA(file, 0)->unum = modtime_nsec;
958 file->len32 = (uint32)file_length;
959 #if SIZEOF_INT64 >= 8
960 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
961 #if SIZEOF_CAPITAL_OFF_T < 8
962 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
963 exit_cleanup(RERR_UNSUPPORTED);
965 file->flags |= FLAG_LENGTH64;
966 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(file_length >> 32);
975 file->flags |= gid_flags;
978 F_NDX(file) = flist->used + flist->ndx_start;
980 if (basename != thisname) {
981 file->dirname = lastdir;
982 F_DEPTH(file) = lastdir_depth + 1;
987 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
989 if (protocol_version >= 30) {
990 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
991 if (xflags & XMIT_TOP_DIR)
992 file->flags |= FLAG_TOP_DIR;
993 file->flags |= FLAG_CONTENT_DIR;
994 } else if (xflags & XMIT_TOP_DIR)
995 file->flags |= FLAG_IMPLIED_DIR;
996 } else if (xflags & XMIT_TOP_DIR) {
997 in_del_hier = recurse;
998 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
999 if (relative_paths && del_hier_name_len > 2
1000 && lastname[del_hier_name_len-1] == '.'
1001 && lastname[del_hier_name_len-2] == '/')
1002 del_hier_name_len -= 2;
1003 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
1004 } else if (in_del_hier) {
1005 if (!relative_paths || !del_hier_name_len
1006 || (l1 >= del_hier_name_len
1007 && lastname[del_hier_name_len] == '/'))
1008 file->flags |= FLAG_CONTENT_DIR;
1014 if (preserve_devices && IS_DEVICE(mode)) {
1015 uint32 *devp = F_RDEV_P(file);
1016 DEV_MAJOR(devp) = major(rdev);
1017 DEV_MINOR(devp) = minor(rdev);
1020 #ifdef SUPPORT_LINKS
1023 if (first_hlink_ndx >= flist->ndx_start) {
1024 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1025 memcpy(bp, F_SYMLINK(first), linkname_len);
1027 if (munge_symlinks) {
1028 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
1029 bp += SYMLINK_PREFIX_LEN;
1030 linkname_len -= SYMLINK_PREFIX_LEN;
1033 if (sender_symlink_iconv) {
1036 alloc_len = linkname_len;
1039 /* Read the symlink data into the end of our double-sized
1040 * buffer and then convert it into the right spot. */
1041 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
1042 linkname_len - 1, (size_t)-1);
1043 read_sbuf(f, inbuf.buf, inbuf.len);
1044 INIT_XBUF(outbuf, bp, 0, alloc_len);
1046 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
1047 io_error |= IOERR_GENERAL;
1048 rprintf(FERROR_XFER,
1049 "[%s] cannot convert symlink data for: %s (%s)\n",
1050 who_am_i(), full_fname(thisname), strerror(errno));
1051 bp = (char*)file->basename;
1055 bp[outbuf.len] = '\0';
1058 read_sbuf(f, bp, linkname_len - 1);
1059 if (sanitize_paths && !munge_symlinks && *bp)
1060 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1065 #ifdef SUPPORT_HARD_LINKS
1066 if (preserve_hard_links && xflags & XMIT_HLINKED) {
1067 if (protocol_version >= 30) {
1068 if (xflags & XMIT_HLINK_FIRST) {
1069 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1071 F_HL_GNUM(file) = first_hlink_ndx;
1073 static int32 cnt = 0;
1074 struct ht_int64_node *np;
1077 if (protocol_version < 26) {
1081 if (!(xflags & XMIT_SAME_DEV_pre30))
1082 dev = read_longint(f);
1083 ino = read_longint(f);
1085 np = idev_find(dev, ino);
1086 ndx = (int32)(long)np->data - 1;
1089 np->data = (void*)(long)cnt;
1091 F_HL_GNUM(file) = ndx;
1096 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1100 /* Prior to 28, we get a useless set of nulls. */
1103 if (first_hlink_ndx >= flist->ndx_start) {
1104 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1105 memcpy(bp, F_SUM(first), checksum_len);
1107 read_buf(f, bp, checksum_len);
1111 if (preserve_acls && !S_ISLNK(mode))
1112 receive_acl(f, file);
1114 #ifdef SUPPORT_XATTRS
1115 if (preserve_xattrs)
1116 receive_xattr(f, file);
1119 if (S_ISREG(mode) || S_ISLNK(mode))
1120 stats.total_size += file_length;
1125 /* Create a file_struct for a named file by reading its stat() information
1126 * and performing extensive checks against global options.
1128 * Returns a pointer to the new file struct, or NULL if there was an error
1129 * or this file should be excluded.
1131 * Note: Any error (here or in send_file_name) that results in the omission of
1132 * an existent source file from the file list should set
1133 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1134 * destination if --delete is on. */
1135 struct file_struct *make_file(const char *fname, struct file_list *flist,
1136 STRUCT_STAT *stp, int flags, int filter_level)
1138 static char *lastdir;
1139 static int lastdir_len = -1;
1140 struct file_struct *file;
1141 char thisname[MAXPATHLEN];
1142 char linkname[MAXPATHLEN];
1143 int alloc_len, basename_len, linkname_len;
1144 int extra_len = file_extra_cnt * EXTRA_LEN;
1145 const char *basename;
1150 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1151 io_error |= IOERR_GENERAL;
1152 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1155 clean_fname(thisname, 0);
1157 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1159 if (stp && (S_ISDIR(stp->st_mode) || IS_MISSING_FILE(*stp))) {
1160 /* This is needed to handle a "symlink/." with a --relative
1161 * dir, or a request to delete a specific file. */
1163 *linkname = '\0'; /* make IBM code checker happy */
1164 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1165 int save_errno = errno;
1166 /* See if file is excluded before reporting an error. */
1167 if (filter_level != NO_FILTERS
1168 && (is_excluded(thisname, 0, filter_level)
1169 || is_excluded(thisname, 1, filter_level))) {
1170 if (ignore_perishable && save_errno != ENOENT)
1171 non_perishable_cnt++;
1174 if (save_errno == ENOENT) {
1175 #ifdef SUPPORT_LINKS
1176 /* When our options tell us to follow a symlink that
1177 * points nowhere, tell the user about the symlink
1178 * instead of giving a "vanished" message. We only
1179 * dereference a symlink if one of the --copy*links
1180 * options was specified, so there's no need for the
1181 * extra lstat() if one of these options isn't on. */
1182 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1183 && x_lstat(thisname, &st, NULL) == 0
1184 && S_ISLNK(st.st_mode)) {
1185 io_error |= IOERR_GENERAL;
1186 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1187 full_fname(thisname));
1191 enum logcode c = am_daemon && protocol_version < 28
1192 ? FERROR : FWARNING;
1193 io_error |= IOERR_VANISHED;
1194 rprintf(c, "file has vanished: %s\n",
1195 full_fname(thisname));
1198 io_error |= IOERR_GENERAL;
1199 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1200 full_fname(thisname));
1203 } else if (IS_MISSING_FILE(st)) {
1204 io_error |= IOERR_GENERAL;
1205 rprintf(FINFO, "skipping file with bogus (zero) st_mode: %s\n",
1206 full_fname(thisname));
1210 if (filter_level == NO_FILTERS)
1213 if (S_ISDIR(st.st_mode)) {
1215 rprintf(FINFO, "skipping directory %s\n", thisname);
1218 /* -x only affects dirs because we need to avoid recursing
1219 * into a mount-point directory, not to avoid copying a
1220 * symlinked file if -L (or similar) was specified. */
1221 if (one_file_system && st.st_dev != filesystem_dev
1222 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1223 if (one_file_system > 1) {
1224 if (INFO_GTE(MOUNT, 1)) {
1226 "[%s] skipping mount-point dir %s\n",
1227 who_am_i(), thisname);
1231 flags |= FLAG_MOUNT_DIR;
1232 flags &= ~FLAG_CONTENT_DIR;
1235 flags &= ~FLAG_CONTENT_DIR;
1237 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1238 if (ignore_perishable)
1239 non_perishable_cnt++;
1243 if (lp_ignore_nonreadable(module_id)) {
1244 #ifdef SUPPORT_LINKS
1245 if (!S_ISLNK(st.st_mode))
1247 if (access(thisname, R_OK) != 0)
1253 /* Only divert a directory in the main transfer. */
1255 if (flist->prev && S_ISDIR(st.st_mode)
1256 && flags & FLAG_DIVERT_DIRS) {
1257 /* Room for parent/sibling/next-child info. */
1258 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1260 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1261 pool = dir_flist->file_pool;
1263 pool = flist->file_pool;
1266 /* Directories need an extra int32 for the default ACL. */
1267 if (preserve_acls && S_ISDIR(st.st_mode))
1268 extra_len += EXTRA_LEN;
1273 if (DEBUG_GTE(FLIST, 2)) {
1274 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1275 who_am_i(), thisname, filter_level);
1278 if ((basename = strrchr(thisname, '/')) != NULL) {
1279 int len = basename++ - thisname;
1280 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1281 lastdir = new_array(char, len + 1);
1282 memcpy(lastdir, thisname, len);
1283 lastdir[len] = '\0';
1287 basename = thisname;
1288 basename_len = strlen(basename) + 1; /* count the '\0' */
1290 #ifdef SUPPORT_LINKS
1291 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1296 #ifdef ST_MTIME_NSEC
1297 if (st.ST_MTIME_NSEC && protocol_version >= 31)
1298 extra_len += EXTRA_LEN;
1300 #if SIZEOF_CAPITAL_OFF_T >= 8
1301 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1302 extra_len += EXTRA_LEN;
1305 if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1306 file_checksum(thisname, tmp_sum, st.st_size);
1307 if (sender_keeps_checksum)
1308 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1311 #if EXTRA_ROUNDING > 0
1312 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1313 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1316 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1319 bp = pool_alloc(pool, alloc_len, "make_file");
1321 if (!(bp = new_array(char, alloc_len)))
1322 out_of_memory("make_file");
1325 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1327 file = (struct file_struct *)bp;
1328 bp += FILE_STRUCT_LEN;
1330 memcpy(bp, basename, basename_len);
1332 #ifdef SUPPORT_HARD_LINKS
1333 if (preserve_hard_links && flist && flist->prev) {
1334 if (protocol_version >= 28
1335 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1336 : S_ISREG(st.st_mode)) {
1337 tmp_dev = (int64)st.st_dev;
1338 tmp_ino = (int64)st.st_ino;
1344 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1345 if (IS_DEVICE(st.st_mode)) {
1346 tmp_rdev = st.st_rdev;
1348 } else if (IS_SPECIAL(st.st_mode))
1352 file->flags = flags;
1353 file->modtime = st.st_mtime;
1354 #ifdef ST_MTIME_NSEC
1355 if (st.ST_MTIME_NSEC && protocol_version >= 31) {
1356 file->flags |= FLAG_MOD_NSEC;
1357 OPT_EXTRA(file, 0)->unum = st.ST_MTIME_NSEC;
1360 file->len32 = (uint32)st.st_size;
1361 #if SIZEOF_CAPITAL_OFF_T >= 8
1362 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1363 file->flags |= FLAG_LENGTH64;
1364 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(st.st_size >> 32);
1367 file->mode = st.st_mode;
1369 F_OWNER(file) = st.st_uid;
1371 F_GROUP(file) = st.st_gid;
1372 if (am_generator && st.st_uid == our_uid)
1373 file->flags |= FLAG_OWNED_BY_US;
1375 if (basename != thisname)
1376 file->dirname = lastdir;
1378 #ifdef SUPPORT_LINKS
1380 memcpy(bp + basename_len, linkname, linkname_len);
1384 F_PATHNAME(file) = pathname;
1386 F_DEPTH(file) = extra_len / EXTRA_LEN;
1388 if (basename_len == 0+1) {
1394 if (sender_keeps_checksum && S_ISREG(st.st_mode))
1395 memcpy(F_SUM(file), tmp_sum, checksum_len);
1398 F_NDX(file) = stats.num_dirs;
1403 /* Only called for temporary file_struct entries created by make_file(). */
1404 void unmake_file(struct file_struct *file)
1406 free(REQ_EXTRA(file, F_DEPTH(file)));
1409 static struct file_struct *send_file_name(int f, struct file_list *flist,
1410 const char *fname, STRUCT_STAT *stp,
1411 int flags, int filter_level)
1413 struct file_struct *file;
1415 file = make_file(fname, flist, stp, flags, filter_level);
1419 if (chmod_modes && !S_ISLNK(file->mode) && file->mode)
1420 file->mode = tweak_mode(file->mode, chmod_modes);
1423 char fbuf[MAXPATHLEN];
1424 #ifdef SUPPORT_LINKS
1425 const char *symlink_name;
1428 char symlink_buf[MAXPATHLEN];
1431 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1436 #ifdef SUPPORT_LINKS
1437 if (preserve_links && S_ISLNK(file->mode)) {
1438 symlink_name = F_SYMLINK(file);
1439 symlink_len = strlen(symlink_name);
1440 if (symlink_len == 0) {
1441 io_error |= IOERR_GENERAL;
1443 rprintf(FERROR_XFER,
1444 "skipping symlink with 0-length value: %s\n",
1449 symlink_name = NULL;
1455 if (ic_send != (iconv_t)-1) {
1458 INIT_CONST_XBUF(outbuf, fbuf);
1460 if (file->dirname) {
1461 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1462 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1463 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0)
1466 fbuf[outbuf.len++] = '/';
1469 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1470 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1472 io_error |= IOERR_GENERAL;
1473 rprintf(FERROR_XFER,
1474 "[%s] cannot convert filename: %s (%s)\n",
1475 who_am_i(), f_name(file, fbuf), strerror(errno));
1478 fbuf[outbuf.len] = '\0';
1480 #ifdef SUPPORT_LINKS
1481 if (symlink_len && sender_symlink_iconv) {
1482 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1483 INIT_CONST_XBUF(outbuf, symlink_buf);
1484 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1485 io_error |= IOERR_GENERAL;
1487 rprintf(FERROR_XFER,
1488 "[%s] cannot convert symlink data for: %s (%s)\n",
1489 who_am_i(), full_fname(fbuf), strerror(errno));
1492 symlink_buf[outbuf.len] = '\0';
1494 symlink_name = symlink_buf;
1495 symlink_len = outbuf.len;
1503 if (preserve_acls && !S_ISLNK(file->mode)) {
1504 sx.st.st_mode = file->mode;
1505 if (get_acl(fname, &sx) < 0) {
1506 io_error |= IOERR_GENERAL;
1511 #ifdef SUPPORT_XATTRS
1512 if (preserve_xattrs) {
1513 sx.st.st_mode = file->mode;
1514 if (get_xattr(fname, &sx) < 0) {
1515 io_error |= IOERR_GENERAL;
1521 send_file_entry(f, fbuf, file,
1522 #ifdef SUPPORT_LINKS
1523 symlink_name, symlink_len,
1525 flist->used, flist->ndx_start);
1528 if (preserve_acls && !S_ISLNK(file->mode)) {
1533 #ifdef SUPPORT_XATTRS
1534 if (preserve_xattrs) {
1535 F_XATTR(file) = send_xattr(f, &sx);
1541 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1543 flist_expand(flist, 1);
1544 flist->files[flist->used++] = file;
1549 static void send_if_directory(int f, struct file_list *flist,
1550 struct file_struct *file,
1551 char *fbuf, unsigned int ol,
1554 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1556 if (S_ISDIR(file->mode)
1557 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1559 unsigned int len = strlen(fbuf);
1560 if (len > 1 && fbuf[len-1] == '/')
1562 save_filters = push_local_filters(fbuf, len);
1563 send_directory(f, flist, fbuf, len, flags);
1564 pop_local_filters(save_filters);
1571 static int file_compare(const void *file1, const void *file2)
1573 return f_name_cmp(*(struct file_struct **)file1,
1574 *(struct file_struct **)file2);
1577 /* The guts of a merge-sort algorithm. This was derived from the glibc
1578 * version, but I (Wayne) changed the merge code to do less copying and
1579 * to require only half the amount of temporary memory. */
1580 static void fsort_tmp(struct file_struct **fp, size_t num,
1581 struct file_struct **tmp)
1583 struct file_struct **f1, **f2, **t;
1592 fsort_tmp(f1, n1, tmp);
1594 fsort_tmp(f2, n2, tmp);
1596 while (f_name_cmp(*f1, *f2) <= 0) {
1603 memcpy(t, f1, n1 * PTR_SIZE);
1605 *f1++ = *f2++, n2--;
1607 while (n1 > 0 && n2 > 0) {
1608 if (f_name_cmp(*t, *f2) <= 0)
1611 *f1++ = *f2++, n2--;
1615 memcpy(f1, t, n1 * PTR_SIZE);
1618 /* This file-struct sorting routine makes sure that any identical names in
1619 * the file list stay in the same order as they were in the original list.
1620 * This is particularly vital in inc_recurse mode where we expect a sort
1621 * on the flist to match the exact order of a sort on the dir_flist. */
1622 static void fsort(struct file_struct **fp, size_t num)
1628 qsort(fp, num, PTR_SIZE, file_compare);
1630 struct file_struct **tmp = new_array(struct file_struct *,
1632 fsort_tmp(fp, num, tmp);
1637 /* We take an entire set of sibling dirs from the sorted flist and link them
1638 * into the tree, setting the appropriate parent/child/sibling pointers. */
1639 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1644 int32 *parent_dp = parent_ndx < 0 ? NULL
1645 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1647 flist_expand(dir_flist, dir_cnt);
1648 dir_flist->sorted = dir_flist->files;
1650 for (i = 0; dir_cnt; i++) {
1651 struct file_struct *file = from_flist->sorted[i];
1653 if (!S_ISDIR(file->mode))
1656 dir_flist->files[dir_flist->used++] = file;
1659 if (file->basename[0] == '.' && file->basename[1] == '\0')
1663 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1665 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1667 send_dir_ndx = dir_flist->used - 1;
1669 dp = F_DIR_NODE_P(file);
1670 DIR_PARENT(dp) = parent_ndx;
1671 DIR_FIRST_CHILD(dp) = -1;
1674 DIR_NEXT_SIBLING(dp) = -1;
1677 static void interpret_stat_error(const char *fname, int is_dir)
1679 if (errno == ENOENT) {
1680 io_error |= IOERR_VANISHED;
1681 rprintf(FWARNING, "%s has vanished: %s\n",
1682 is_dir ? "directory" : "file", full_fname(fname));
1684 io_error |= IOERR_GENERAL;
1685 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1690 /* This function is normally called by the sender, but the receiving side also
1691 * calls it from get_dirlist() with f set to -1 so that we just construct the
1692 * file list in memory without sending it over the wire. Also, get_dirlist()
1693 * might call this with f set to -2, which also indicates that local filter
1694 * rules should be ignored. */
1695 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1702 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1703 int start = flist->used;
1704 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1706 assert(flist != NULL);
1708 if (!(d = opendir(fbuf))) {
1709 if (errno == ENOENT) {
1710 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1711 interpret_stat_error(fbuf, True);
1714 io_error |= IOERR_GENERAL;
1715 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1720 if (len == 1 && *fbuf == '/')
1721 remainder = MAXPATHLEN - 1;
1722 else if (len < MAXPATHLEN-1) {
1725 remainder = MAXPATHLEN - (len + 1);
1729 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1731 char *dname = d_name(di);
1732 if (dname[0] == '.' && (dname[1] == '\0'
1733 || (dname[1] == '.' && dname[2] == '\0')))
1735 name_len = strlcpy(p, dname, remainder);
1736 if (name_len >= remainder) {
1737 char save = fbuf[len];
1739 io_error |= IOERR_GENERAL;
1740 rprintf(FERROR_XFER,
1741 "filename overflows max-path len by %u: %s/%s\n",
1742 name_len - remainder + 1, fbuf, dname);
1746 if (dname[0] == '\0') {
1747 io_error |= IOERR_GENERAL;
1748 rprintf(FERROR_XFER,
1749 "cannot send file with empty name in %s\n",
1754 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1760 io_error |= IOERR_GENERAL;
1761 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1766 if (f >= 0 && recurse && !divert_dirs) {
1767 int i, end = flist->used - 1;
1768 /* send_if_directory() bumps flist->used, so use "end". */
1769 for (i = start; i <= end; i++)
1770 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1774 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1775 char *start, char *limit, int flags, char name_type)
1777 static char lastpath[MAXPATHLEN] = "";
1778 static int lastpath_len = 0;
1779 static struct file_struct *lastpath_struct = NULL;
1780 struct file_struct *file;
1781 item_list *relname_list;
1782 relnamecache **rnpp;
1783 int len, need_new_dir, depth = 0;
1784 filter_rule_list save_filter_list = filter_list;
1786 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1787 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1790 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1791 && lastpath_len == limit - fname
1792 && strncmp(lastpath, fname, lastpath_len) == 0)
1797 char *tp = fname, *lp = lastpath;
1798 /* Skip any initial directories in our path that we
1799 * have in common with lastpath. */
1800 assert(start == fname);
1801 for ( ; ; tp++, lp++) {
1803 if (*lp == '/' || *lp == '\0')
1818 int save_copy_links = copy_links;
1819 int save_xfer_dirs = xfer_dirs;
1822 copy_links = xfer_dirs = 1;
1826 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1828 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1830 if (!inc_recurse && file && S_ISDIR(file->mode))
1831 change_local_filter_dir(fname, strlen(fname), depth);
1835 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1837 if (file && !S_ISDIR(file->mode))
1839 lastpath_struct = file;
1840 } else if (file && S_ISDIR(file->mode))
1841 change_local_filter_dir(fname, strlen(fname), ++depth);
1843 strlcpy(lastpath, fname, sizeof lastpath);
1844 lastpath_len = limit - fname;
1848 copy_links = save_copy_links;
1849 xfer_dirs = save_xfer_dirs;
1855 if (!lastpath_struct)
1856 goto done; /* dir must have vanished */
1858 len = strlen(limit+1);
1859 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1860 if (!relname_list) {
1861 if (!(relname_list = new0(item_list)))
1862 out_of_memory("send_implied_dirs");
1863 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1865 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1866 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1867 out_of_memory("send_implied_dirs");
1868 (*rnpp)->name_type = name_type;
1869 strlcpy((*rnpp)->fname, limit+1, len + 1);
1872 filter_list = save_filter_list;
1875 static NORETURN void fatal_unsafe_io_error(void)
1877 /* This (sadly) can only happen when pushing data because
1878 * the sender does not know about what kind of delete
1879 * is in effect on the receiving side when pulling. */
1880 rprintf(FERROR_XFER, "FATAL I/O ERROR: dying to avoid a --delete-%s issue with a pre-3.0.7 receiver.\n",
1881 delete_during == 2 ? "delay" : "during");
1882 exit_cleanup(RERR_UNSUPPORTED);
1885 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1887 char fbuf[MAXPATHLEN];
1888 item_list *relname_list;
1889 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1893 dlen = strlen(fbuf);
1895 if (!change_pathname(file, NULL, 0))
1896 exit_cleanup(RERR_FILESELECT);
1898 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1900 if (file->flags & FLAG_CONTENT_DIR) {
1901 if (one_file_system) {
1903 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1904 interpret_stat_error(fbuf, True);
1907 filesystem_dev = st.st_dev;
1909 send_directory(f, flist, fbuf, dlen, flags);
1912 if (!relative_paths)
1915 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1919 for (j = 0; j < relname_list->count; j++) {
1921 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1922 char name_type = rnp->name_type;
1925 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1927 if (len >= (int)sizeof fbuf)
1928 continue; /* Impossible... */
1930 slash = strchr(fbuf+dlen+1, '/');
1932 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1936 if (name_type != NORMAL_NAME) {
1938 if (name_type == MISSING_NAME)
1939 memset(&st, 0, sizeof st);
1940 else 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] == '/' && fn[2] && !implied_dot_dir)
2198 implied_dot_dir = -1;
2199 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2200 | CFN_DROP_TRAILING_DOT_DIR);
2205 name_type = DOTDIR_NAME;
2206 } else if (fn[0] == '.')
2207 name_type = DOTDIR_NAME;
2208 } else if (fn[len-1] == '/') {
2210 if (len == 1 && *fn == '.')
2211 name_type = DOTDIR_NAME;
2213 name_type = SLASH_ENDING_NAME;
2215 /* Reject a ".." dir in the active part of the path. */
2216 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2217 if ((p[2] == '/' || p[2] == '\0')
2218 && (p == fn || p[-1] == '/')) {
2220 "found \"..\" dir in relative path: %s\n",
2222 exit_cleanup(RERR_SYNTAX);
2230 name_type = DOTDIR_NAME;
2233 dirlen = dir ? strlen(dir) : 0;
2234 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2235 if (!change_pathname(NULL, dir, -dirlen))
2238 lastdir_len = pathname_len;
2239 } else if (!change_pathname(NULL, lastdir, lastdir_len)) {
2241 if (implied_dot_dir < 0)
2242 implied_dot_dir = 0;
2246 if (implied_dot_dir < 0) {
2247 implied_dot_dir = 1;
2248 send_file_name(f, flist, ".", NULL, (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR, ALL_FILTERS);
2252 memmove(fbuf, fn, len + 1);
2254 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2255 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2256 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2257 if (errno != ENOENT || missing_args == 0) {
2258 /* This is a transfer error, but inhibit deletion
2259 * only if we might be omitting an existing file. */
2260 if (errno != ENOENT)
2261 io_error |= IOERR_GENERAL;
2262 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2265 } else if (missing_args == 1) {
2266 /* Just ignore the arg. */
2268 } else /* (missing_args == 2) */ {
2269 /* Send the arg as a "missing" entry with
2270 * mode 0, which tells the generator to delete it. */
2271 memset(&st, 0, sizeof st);
2275 /* A dot-dir should not be excluded! */
2276 if (name_type != DOTDIR_NAME && st.st_mode != 0
2277 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2280 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2281 rprintf(FINFO, "skipping directory %s\n", fbuf);
2285 if (inc_recurse && relative_paths && *fbuf) {
2286 if ((p = strchr(fbuf+1, '/')) != NULL) {
2287 if (p - fbuf == 1 && *fbuf == '.') {
2288 if ((fn = strchr(p+1, '/')) != NULL)
2292 send_implied_dirs(f, flist, fbuf, fbuf, p, flags,
2293 IS_MISSING_FILE(st) ? MISSING_NAME : name_type);
2297 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2298 /* Send the implied directories at the start of the
2299 * source spec, so we get their permissions right. */
2300 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2303 if (one_file_system)
2304 filesystem_dev = st.st_dev;
2306 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2307 struct file_struct *file;
2308 file = send_file_name(f, flist, fbuf, &st,
2309 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2314 if (name_type == DOTDIR_NAME) {
2315 if (send_dir_depth < 0) {
2317 change_local_filter_dir(fbuf, len, send_dir_depth);
2319 send_directory(f, flist, fbuf, len, flags);
2322 send_if_directory(f, flist, file, fbuf, len, flags);
2324 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2327 if (reenable_multiplex >= 0)
2328 io_start_multiplex_in(reenable_multiplex);
2330 gettimeofday(&end_tv, NULL);
2331 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2332 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2333 if (stats.flist_buildtime == 0)
2334 stats.flist_buildtime = 1;
2337 /* Indicate end of file list */
2338 if (io_error == 0 || ignore_errors)
2340 else if (use_safe_inc_flist) {
2341 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2342 write_varint(f, io_error);
2344 if (delete_during && inc_recurse)
2345 fatal_unsafe_io_error();
2349 #ifdef SUPPORT_HARD_LINKS
2350 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2354 if (show_filelist_p())
2355 finish_filelist_progress(flist);
2357 gettimeofday(&end_tv, NULL);
2358 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2359 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2361 /* When converting names, both sides keep an unsorted file-list array
2362 * because the names will differ on the sending and receiving sides
2363 * (both sides will use the unsorted index number for each item). */
2365 /* Sort the list without removing any duplicates. This allows the
2366 * receiving side to ask for whatever name it kept. For incremental
2367 * recursion mode, the sender marks duplicate dirs so that it can
2368 * send them together in a single file-list. */
2369 if (need_unsorted_flist) {
2370 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2371 out_of_memory("send_file_list");
2372 memcpy(flist->sorted, flist->files,
2373 flist->used * sizeof (struct file_struct*));
2375 flist->sorted = flist->files;
2376 flist_sort_and_clean(flist, 0);
2377 file_total += flist->used;
2378 file_old_total += flist->used;
2380 if (numeric_ids <= 0 && !inc_recurse)
2383 /* send the io_error flag */
2384 if (protocol_version < 30)
2385 write_int(f, ignore_errors ? 0 : io_error);
2386 else if (!use_safe_inc_flist && io_error && !ignore_errors)
2387 send_msg_int(MSG_IO_ERROR, io_error);
2389 if (disable_buffering)
2390 io_end_buffering_out(IOBUF_FREE_BUFS);
2392 stats.flist_size = stats.total_written - start_write;
2393 stats.num_files = flist->used;
2395 if (DEBUG_GTE(FLIST, 3))
2396 output_flist(flist);
2398 if (DEBUG_GTE(FLIST, 2))
2399 rprintf(FINFO, "send_file_list done\n");
2403 add_dirs_to_tree(-1, flist, stats.num_dirs);
2404 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2405 flist->parent_ndx = -1;
2406 flist_done_allocating(flist);
2407 if (send_dir_ndx < 0) {
2408 write_ndx(f, NDX_FLIST_EOF);
2410 if (DEBUG_GTE(FLIST, 3))
2411 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2413 else if (file_total == 1) {
2414 /* If we're creating incremental file-lists and there
2415 * was just 1 item in the first file-list, send 1 more
2416 * file-list to check if this is a 1-file xfer. */
2417 send_extra_file_list(f, 1);
2421 if (DEBUG_GTE(FLIST, 3))
2422 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2428 struct file_list *recv_file_list(int f)
2430 struct file_list *flist;
2435 if (show_filelist_p())
2436 start_filelist_progress("receiving file list");
2437 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2438 rprintf(FCLIENT, "receiving incremental file list\n");
2439 rprintf(FLOG, "receiving file list\n");
2441 parse_name_map(usermap, True);
2443 parse_name_map(groupmap, False);
2446 start_read = stats.total_read;
2448 #ifdef SUPPORT_HARD_LINKS
2449 if (preserve_hard_links && !first_flist)
2453 flist = flist_new(0, "recv_file_list");
2456 if (flist->ndx_start == 1)
2457 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2458 dstart = dir_flist->used;
2464 while ((flags = read_byte(f)) != 0) {
2465 struct file_struct *file;
2467 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2468 flags |= read_byte(f) << 8;
2470 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2472 if (!use_safe_inc_flist) {
2473 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2474 exit_cleanup(RERR_PROTOCOL);
2476 err = read_varint(f);
2482 flist_expand(flist, 1);
2483 file = recv_file_entry(f, flist, flags);
2485 if (S_ISREG(file->mode)) {
2486 /* Already counted */
2487 } else if (S_ISDIR(file->mode)) {
2489 flist_expand(dir_flist, 1);
2490 dir_flist->files[dir_flist->used++] = file;
2493 } else if (S_ISLNK(file->mode))
2494 stats.num_symlinks++;
2495 else if (IS_DEVICE(file->mode))
2496 stats.num_symlinks++;
2498 stats.num_specials++;
2500 flist->files[flist->used++] = file;
2502 maybe_emit_filelist_progress(flist->used);
2504 if (DEBUG_GTE(FLIST, 2)) {
2505 char *name = f_name(file, NULL);
2506 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2509 file_total += flist->used;
2511 if (DEBUG_GTE(FLIST, 2))
2512 rprintf(FINFO, "received %d names\n", flist->used);
2514 if (show_filelist_p())
2515 finish_filelist_progress(flist);
2517 if (need_unsorted_flist) {
2518 /* Create an extra array of index pointers that we can sort for
2519 * the generator's use (for wading through the files in sorted
2520 * order and for calling flist_find()). We keep the "files"
2521 * list unsorted for our exchange of index numbers with the
2522 * other side (since their names may not sort the same). */
2523 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2524 out_of_memory("recv_file_list");
2525 memcpy(flist->sorted, flist->files,
2526 flist->used * sizeof (struct file_struct*));
2527 if (inc_recurse && dir_flist->used > dstart) {
2528 static int dir_flist_malloced = 0;
2529 if (dir_flist_malloced < dir_flist->malloced) {
2530 dir_flist->sorted = realloc_array(dir_flist->sorted,
2531 struct file_struct *,
2532 dir_flist->malloced);
2533 dir_flist_malloced = dir_flist->malloced;
2535 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2536 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2537 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2540 flist->sorted = flist->files;
2541 if (inc_recurse && dir_flist->used > dstart) {
2542 dir_flist->sorted = dir_flist->files;
2543 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2548 flist_done_allocating(flist);
2550 recv_id_list(f, flist);
2552 if (DEBUG_GTE(FLIST, 3))
2553 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2556 /* The --relative option sends paths with a leading slash, so we need
2557 * to specify the strip_root option here. We also want to ensure that
2558 * a non-relative transfer doesn't have any leading slashes or it might
2559 * cause the client a security issue. */
2560 flist_sort_and_clean(flist, 1);
2562 if (protocol_version < 30) {
2563 /* Recv the io_error flag */
2564 int err = read_int(f);
2567 } else if (inc_recurse && flist->ndx_start == 1) {
2568 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2569 flist->parent_ndx = -1;
2572 if (DEBUG_GTE(FLIST, 3))
2573 output_flist(flist);
2575 if (DEBUG_GTE(FLIST, 2))
2576 rprintf(FINFO, "recv_file_list done\n");
2578 stats.flist_size += stats.total_read - start_read;
2579 stats.num_files += flist->used;
2584 /* This is only used once by the receiver if the very first file-list
2585 * has exactly one item in it. */
2586 void recv_additional_file_list(int f)
2588 struct file_list *flist;
2589 int ndx = read_ndx(f);
2590 if (ndx == NDX_FLIST_EOF) {
2592 if (DEBUG_GTE(FLIST, 3))
2593 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2594 change_local_filter_dir(NULL, 0, 0);
2596 ndx = NDX_FLIST_OFFSET - ndx;
2597 if (ndx < 0 || ndx >= dir_flist->used) {
2598 ndx = NDX_FLIST_OFFSET - ndx;
2600 "[%s] Invalid dir index: %d (%d - %d)\n",
2601 who_am_i(), ndx, NDX_FLIST_OFFSET,
2602 NDX_FLIST_OFFSET - dir_flist->used + 1);
2603 exit_cleanup(RERR_PROTOCOL);
2605 if (DEBUG_GTE(FLIST, 3)) {
2606 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2609 flist = recv_file_list(f);
2610 flist->parent_ndx = ndx;
2614 /* Search for an identically-named item in the file list. Note that the
2615 * items must agree in their directory-ness, or no match is returned. */
2616 int flist_find(struct file_list *flist, struct file_struct *f)
2618 int low = flist->low, high = flist->high;
2619 int diff, mid, mid_up;
2621 while (low <= high) {
2622 mid = (low + high) / 2;
2623 if (F_IS_ACTIVE(flist->sorted[mid]))
2626 /* Scan for the next non-empty entry using the cached
2627 * distance values. If the value isn't fully up-to-
2628 * date, update it. */
2629 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2630 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2632 mid_up += F_DEPTH(flist->sorted[mid_up]);
2633 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2634 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2636 if (mid_up > high) {
2637 /* If there's nothing left above us, set high to
2638 * a non-empty entry below us and continue. */
2639 high = mid - (int)flist->sorted[mid]->len32;
2640 if (!F_IS_ACTIVE(flist->sorted[high])) {
2642 high -= (int)flist->sorted[high]->len32;
2643 } while (!F_IS_ACTIVE(flist->sorted[high]));
2644 flist->sorted[mid]->len32 = mid - high;
2649 diff = f_name_cmp(flist->sorted[mid_up], f);
2651 if (protocol_version < 29
2652 && S_ISDIR(flist->sorted[mid_up]->mode)
2653 != S_ISDIR(f->mode))
2665 /* Search for an identically-named item in the file list. Differs from
2666 * flist_find in that an item that agrees with "f" in directory-ness is
2667 * preferred but one that does not is still found. */
2668 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2673 /* First look for an item that agrees in directory-ness. */
2674 ndx = flist_find(flist, f);
2678 /* Temporarily flip f->mode to look for an item of opposite
2679 * directory-ness. */
2680 save_mode = f->mode;
2681 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2682 ndx = flist_find(flist, f);
2683 f->mode = save_mode;
2688 * Free up any resources a file_struct has allocated
2689 * and clear the file.
2691 void clear_file(struct file_struct *file)
2693 /* The +1 zeros out the first char of the basename. */
2694 memset(file, 0, FILE_STRUCT_LEN + 1);
2695 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2696 * entry. Likewise for len32 in the opposite direction. We assume
2697 * that we're alone for now since flist_find() will adjust the counts
2698 * it runs into that aren't up-to-date. */
2699 file->len32 = F_DEPTH(file) = 1;
2702 /* Allocate a new file list. */
2703 struct file_list *flist_new(int flags, char *msg)
2705 struct file_list *flist;
2707 if (!(flist = new0(struct file_list)))
2710 if (flags & FLIST_TEMP) {
2711 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2716 /* This is a doubly linked list with prev looping back to
2717 * the end of the list, but the last next pointer is NULL. */
2719 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2722 if (!flist->file_pool)
2725 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2727 first_flist = cur_flist = flist->prev = flist;
2729 struct file_list *prev = first_flist->prev;
2731 flist->file_pool = first_flist->file_pool;
2733 flist->ndx_start = prev->ndx_start + prev->used + 1;
2734 flist->flist_num = prev->flist_num + 1;
2737 prev->next = first_flist->prev = flist;
2739 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2746 /* Free up all elements in a flist. */
2747 void flist_free(struct file_list *flist)
2750 /* Was FLIST_TEMP dir-list. */
2751 } else if (flist == flist->prev) {
2752 first_flist = cur_flist = NULL;
2756 if (flist == cur_flist)
2757 cur_flist = flist->next;
2758 if (flist == first_flist)
2759 first_flist = first_flist->next;
2761 flist->prev->next = flist->next;
2763 flist->next = first_flist;
2765 flist->next->prev = flist->prev;
2766 file_total -= flist->used;
2770 if (!flist->prev || !flist_cnt)
2771 pool_destroy(flist->file_pool);
2773 pool_free_old(flist->file_pool, flist->pool_boundary);
2775 if (flist->sorted && flist->sorted != flist->files)
2776 free(flist->sorted);
2781 /* This routine ensures we don't have any duplicate names in our file list.
2782 * duplicate names can cause corruption because of the pipelining. */
2783 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2785 char fbuf[MAXPATHLEN];
2790 if (flist->used == 0) {
2796 fsort(flist->sorted, flist->used);
2798 if (!am_sender || inc_recurse) {
2799 for (i = prev_i = 0; i < flist->used; i++) {
2800 if (F_IS_ACTIVE(flist->sorted[i])) {
2805 flist->low = prev_i;
2807 i = prev_i = flist->used - 1;
2811 while (++i < flist->used) {
2813 struct file_struct *file = flist->sorted[i];
2815 if (!F_IS_ACTIVE(file))
2817 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2819 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2820 int save_mode = file->mode;
2821 /* Make sure that this directory doesn't duplicate a
2822 * non-directory earlier in the list. */
2823 flist->high = prev_i;
2824 file->mode = S_IFREG;
2825 j = flist_find(flist, file);
2826 file->mode = save_mode;
2831 /* If one is a dir and the other is not, we want to
2832 * keep the dir because it might have contents in the
2833 * list. Otherwise keep the first one. */
2834 if (S_ISDIR(file->mode)) {
2835 struct file_struct *fp = flist->sorted[j];
2836 if (!S_ISDIR(fp->mode))
2840 file->flags |= FLAG_DUPLICATE;
2841 else { /* Make sure we merge our vital flags. */
2842 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2843 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2851 if (DEBUG_GTE(DUP, 1)) {
2853 "removing duplicate name %s from file list (%d)\n",
2854 f_name(file, fbuf), drop + flist->ndx_start);
2856 clear_file(flist->sorted[drop]);
2860 if (flist->low == drop) {
2862 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2871 flist->high = prev_i;
2874 /* We need to strip off the leading slashes for relative
2875 * paths, but this must be done _after_ the sorting phase. */
2876 for (i = flist->low; i <= flist->high; i++) {
2877 struct file_struct *file = flist->sorted[i];
2881 while (*file->dirname == '/')
2883 if (!*file->dirname)
2884 file->dirname = NULL;
2888 if (prune_empty_dirs && !am_sender) {
2889 int j, prev_depth = 0;
2891 prev_i = 0; /* It's OK that this isn't really true. */
2893 for (i = flist->low; i <= flist->high; i++) {
2894 struct file_struct *fp, *file = flist->sorted[i];
2896 /* This temporarily abuses the F_DEPTH() value for a
2897 * directory that is in a chain that might get pruned.
2898 * We restore the old value if it gets a reprieve. */
2899 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2900 /* Dump empty dirs when coming back down. */
2901 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2902 fp = flist->sorted[prev_i];
2903 if (F_DEPTH(fp) >= 0)
2905 prev_i = -F_DEPTH(fp)-1;
2908 prev_depth = F_DEPTH(file);
2909 if (is_excluded(f_name(file, fbuf), 1,
2911 /* Keep dirs through this dir. */
2912 for (j = prev_depth-1; ; j--) {
2913 fp = flist->sorted[prev_i];
2914 if (F_DEPTH(fp) >= 0)
2916 prev_i = -F_DEPTH(fp)-1;
2920 F_DEPTH(file) = -prev_i-1;
2923 /* Keep dirs through this non-dir. */
2924 for (j = prev_depth; ; j--) {
2925 fp = flist->sorted[prev_i];
2926 if (F_DEPTH(fp) >= 0)
2928 prev_i = -F_DEPTH(fp)-1;
2933 /* Dump all remaining empty dirs. */
2935 struct file_struct *fp = flist->sorted[prev_i];
2936 if (F_DEPTH(fp) >= 0)
2938 prev_i = -F_DEPTH(fp)-1;
2942 for (i = flist->low; i <= flist->high; i++) {
2943 if (F_IS_ACTIVE(flist->sorted[i]))
2947 for (i = flist->high; i >= flist->low; i--) {
2948 if (F_IS_ACTIVE(flist->sorted[i]))
2955 static void output_flist(struct file_list *flist)
2957 char uidbuf[16], gidbuf[16], depthbuf[16];
2958 struct file_struct *file;
2959 const char *root, *dir, *slash, *name, *trail;
2960 const char *who = who_am_i();
2963 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2964 who, flist->ndx_start, flist->used, flist->low, flist->high);
2965 for (i = 0; i < flist->used; i++) {
2966 file = flist->files[i];
2967 if ((am_root || am_sender) && uid_ndx) {
2968 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2973 static char parens[] = "(\0)\0\0\0";
2974 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2975 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2976 pp, F_GROUP(file), pp + 2);
2980 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2981 if (F_IS_ACTIVE(file)) {
2982 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2983 if ((dir = file->dirname) == NULL)
2987 name = file->basename;
2988 trail = S_ISDIR(file->mode) ? "/" : "";
2990 root = dir = slash = name = trail = "";
2992 "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2993 who, i + flist->ndx_start,
2994 root, dir, slash, name, trail,
2995 (int)file->mode, comma_num(F_LENGTH(file)),
2996 uidbuf, gidbuf, file->flags);
3000 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
3001 enum fnc_type { t_PATH, t_ITEM };
3003 static int found_prefix;
3005 /* Compare the names of two file_struct entities, similar to how strcmp()
3006 * would do if it were operating on the joined strings.
3008 * Some differences beginning with protocol_version 29: (1) directory names
3009 * are compared with an assumed trailing slash so that they compare in a
3010 * way that would cause them to sort immediately prior to any content they
3011 * may have; (2) a directory of any name compares after a non-directory of
3012 * any name at the same depth; (3) a directory with name "." compares prior
3013 * to anything else. These changes mean that a directory and a non-dir
3014 * with the same name will not compare as equal (protocol_version >= 29).
3016 * The dirname component can be an empty string, but the basename component
3017 * cannot (and never is in the current codebase). The basename component
3018 * may be NULL (for a removed item), in which case it is considered to be
3019 * after any existing item. */
3020 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
3023 const uchar *c1, *c2;
3024 enum fnc_state state1, state2;
3025 enum fnc_type type1, type2;
3026 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
3028 if (!f1 || !F_IS_ACTIVE(f1)) {
3029 if (!f2 || !F_IS_ACTIVE(f2))
3033 if (!f2 || !F_IS_ACTIVE(f2))
3036 c1 = (uchar*)f1->dirname;
3037 c2 = (uchar*)f2->dirname;
3041 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3042 c1 = (const uchar*)f1->basename;
3043 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3045 state1 = s_TRAILING;
3054 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3055 c2 = (const uchar*)f2->basename;
3056 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3058 state2 = s_TRAILING;
3068 return type1 == t_PATH ? 1 : -1;
3078 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3079 c1 = (const uchar*)f1->basename;
3080 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3082 state1 = s_TRAILING;
3088 state1 = s_TRAILING;
3089 if (type1 == t_PATH) {
3098 if (*c2 && type1 != type2)
3099 return type1 == t_PATH ? 1 : -1;
3108 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3109 c2 = (const uchar*)f2->basename;
3110 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3112 state2 = s_TRAILING;
3118 state2 = s_TRAILING;
3119 if (type2 == t_PATH) {
3132 return type1 == t_PATH ? 1 : -1;
3134 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3139 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3140 * not match if f2's basename is not an exact match of a path element in f1.
3141 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3142 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3146 return found_prefix;
3149 char *f_name_buf(void)
3151 static char names[5][MAXPATHLEN];
3152 static unsigned int n;
3154 n = (n + 1) % (sizeof names / sizeof names[0]);
3159 /* Return a copy of the full filename of a flist entry, using the indicated
3160 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3161 * done because we checked the size when creating the file_struct entry.
3163 char *f_name(const struct file_struct *f, char *fbuf)
3165 if (!f || !F_IS_ACTIVE(f))
3169 fbuf = f_name_buf();
3172 int len = strlen(f->dirname);
3173 memcpy(fbuf, f->dirname, len);
3175 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3177 strlcpy(fbuf, f->basename, MAXPATHLEN);
3182 /* Do a non-recursive scan of the named directory, possibly ignoring all
3183 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3184 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3185 * buffer (the functions we call will append names onto the end, but the old
3186 * dir value will be restored on exit). */
3187 struct file_list *get_dirlist(char *dirname, int dlen, int flags)
3189 struct file_list *dirlist;
3190 char dirbuf[MAXPATHLEN];
3191 int save_recurse = recurse;
3192 int save_xfer_dirs = xfer_dirs;
3193 int save_prune_empty_dirs = prune_empty_dirs;
3194 int senddir_fd = flags & GDL_IGNORE_FILTER_RULES ? -2 : -1;
3197 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3198 if (dlen >= MAXPATHLEN)
3203 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3207 send_directory(senddir_fd, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
3208 xfer_dirs = save_xfer_dirs;
3209 recurse = save_recurse;
3210 if (INFO_GTE(PROGRESS, 1))
3211 flist_count_offset += dirlist->used;
3213 prune_empty_dirs = 0;
3214 dirlist->sorted = dirlist->files;
3215 flist_sort_and_clean(dirlist, 0);
3216 prune_empty_dirs = save_prune_empty_dirs;
3218 if (DEBUG_GTE(FLIST, 3))
3219 output_flist(dirlist);