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 keep_dirlinks;
46 extern int preserve_uid;
47 extern int preserve_gid;
48 extern int preserve_acls;
49 extern int preserve_xattrs;
50 extern int preserve_links;
51 extern int preserve_hard_links;
52 extern int preserve_devices;
53 extern int preserve_specials;
54 extern int missing_args;
58 extern int relative_paths;
59 extern int implied_dirs;
60 extern int file_extra_cnt;
61 extern int ignore_perishable;
62 extern int non_perishable_cnt;
63 extern int prune_empty_dirs;
64 extern int copy_links;
65 extern int copy_unsafe_links;
66 extern int protocol_version;
67 extern int sanitize_paths;
68 extern int munge_symlinks;
69 extern int need_unsorted_flist;
70 extern int sender_symlink_iconv;
71 extern int output_needs_newline;
72 extern int sender_keeps_checksum;
73 extern int unsort_ndx;
74 extern struct stats stats;
75 extern char *filesfrom_host;
76 extern char *usermap, *groupmap;
78 extern char curr_dir[MAXPATHLEN];
80 extern struct chmod_mode_struct *chmod_modes;
82 extern filter_rule_list filter_list;
83 extern filter_rule_list daemon_filter_list;
86 extern int filesfrom_convert;
87 extern iconv_t ic_send, ic_recv;
91 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
92 #define ST_MTIME_NSEC st_mtim.tv_nsec
93 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
94 #define ST_MTIME_NSEC st_mtimensec
98 #define PTR_SIZE (sizeof (struct file_struct *))
102 dev_t filesystem_dev; /* used to implement -x */
104 struct file_list *cur_flist, *first_flist, *dir_flist;
105 int send_dir_ndx = -1, send_dir_depth = -1;
106 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
107 int file_total = 0; /* total of all active items over all file-lists */
108 int file_old_total = 0; /* total of active items that will soon be gone */
109 int flist_eof = 0; /* all the file-lists are now known */
111 #define NORMAL_NAME 0
112 #define SLASH_ENDING_NAME 1
113 #define DOTDIR_NAME 2
115 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
116 * internally, even if this platform does not allow files to have 64-bit inums.
117 * The only exception is if we're on a platform with no 64-bit type at all.
119 * Because we use read_longint() to get these off the wire, if you transfer
120 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
121 * machine with no 64-bit types then you will get an overflow error.
123 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
124 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
125 * be truncated. But it's a kind of silly thing to do anyhow. */
127 /* The tmp_* vars are used as a cache area by make_file() to store data
128 * that the sender doesn't need to remember in its file list. The data
129 * will survive just long enough to be used by send_file_entry(). */
130 static dev_t tmp_rdev;
131 #ifdef SUPPORT_HARD_LINKS
132 static int64 tmp_dev, tmp_ino;
134 static char tmp_sum[MAX_DIGEST_LEN];
136 static char empty_sum[MAX_DIGEST_LEN];
137 static int flist_count_offset; /* for --delete --progress */
139 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
140 static void output_flist(struct file_list *flist);
142 void init_flist(void)
144 if (DEBUG_GTE(FLIST, 4)) {
145 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
146 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
148 checksum_len = protocol_version < 21 ? 2
149 : protocol_version < 30 ? MD4_DIGEST_LEN
153 static int show_filelist_p(void)
155 return INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
158 static void start_filelist_progress(char *kind)
160 rprintf(FCLIENT, "%s ... ", kind);
161 output_needs_newline = 1;
165 static void emit_filelist_progress(int count)
167 rprintf(FCLIENT, " %d files...\r", count);
170 static void maybe_emit_filelist_progress(int count)
172 if (INFO_GTE(FLIST, 2) && show_filelist_p() && (count % 100) == 0)
173 emit_filelist_progress(count);
176 static void finish_filelist_progress(const struct file_list *flist)
178 if (INFO_GTE(FLIST, 2)) {
179 /* This overwrites the progress line */
180 rprintf(FINFO, "%d file%sto consider\n",
181 flist->used, flist->used == 1 ? " " : "s ");
183 output_needs_newline = 0;
184 rprintf(FINFO, "done\n");
188 void show_flist_stats(void)
193 /* Stat either a symlink or its referent, depending on the settings of
194 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
196 * If path is the name of a symlink, then the linkbuf buffer (which must hold
197 * MAXPATHLEN chars) will be set to the symlink's target string.
199 * The stat structure pointed to by stp will contain information about the
200 * link or the referent as appropriate, if they exist. */
201 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
204 if (link_stat(path, stp, copy_dirlinks) < 0)
206 if (S_ISLNK(stp->st_mode)) {
207 int llen = do_readlink(path, linkbuf, MAXPATHLEN - 1);
210 linkbuf[llen] = '\0';
211 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
212 if (INFO_GTE(SYMSAFE, 1)) {
213 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
216 return x_stat(path, stp, NULL);
218 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
219 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
220 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
221 llen - SYMLINK_PREFIX_LEN + 1);
226 return x_stat(path, stp, NULL);
230 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
234 return x_stat(path, stp, NULL);
235 if (x_lstat(path, stp, NULL) < 0)
237 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
239 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
244 return x_stat(path, stp, NULL);
248 static inline int is_daemon_excluded(const char *fname, int is_dir)
250 if (daemon_filter_list.head
251 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
258 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
260 if (daemon_filter_list.head) {
263 while ((slash = strchr(slash+1, '/')) != NULL) {
266 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
275 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
284 /* This function is used to check if a file should be included/excluded
285 * from the list of files based on its name and type etc. The value of
286 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
287 static int is_excluded(const char *fname, int is_dir, int filter_level)
289 #if 0 /* This currently never happens, so avoid a useless compare. */
290 if (filter_level == NO_FILTERS)
293 if (is_daemon_excluded(fname, is_dir))
295 if (filter_level != ALL_FILTERS)
298 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
303 static void send_directory(int f, struct file_list *flist,
304 char *fbuf, int len, int flags);
306 static const char *pathname, *orig_dir;
307 static int pathname_len;
309 /* Make sure flist can hold at least flist->used + extra entries. */
310 static void flist_expand(struct file_list *flist, int extra)
312 struct file_struct **new_ptr;
314 if (flist->used + extra <= flist->malloced)
317 if (flist->malloced < FLIST_START)
318 flist->malloced = FLIST_START;
319 else if (flist->malloced >= FLIST_LINEAR)
320 flist->malloced += FLIST_LINEAR;
322 flist->malloced *= 2;
324 /* In case count jumped or we are starting the list
325 * with a known size just set it. */
326 if (flist->malloced < flist->used + extra)
327 flist->malloced = flist->used + extra;
329 new_ptr = realloc_array(flist->files, struct file_struct *,
332 if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
333 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
335 big_num(sizeof flist->files[0] * flist->malloced),
336 (new_ptr == flist->files) ? " not" : "");
339 flist->files = new_ptr;
342 out_of_memory("flist_expand");
345 static void flist_done_allocating(struct file_list *flist)
347 void *ptr = pool_boundary(flist->file_pool, 8*1024);
348 if (flist->pool_boundary == ptr)
349 flist->pool_boundary = NULL; /* list didn't use any pool memory */
351 flist->pool_boundary = ptr;
354 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
355 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
356 * with dir == NULL taken to be the starting directory, and dirlen < 0
357 * indicating that strdup(dir) should be called and then the -dirlen length
358 * value checked to ensure that it is not daemon-excluded. */
359 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
362 char *cpy = strdup(dir);
364 change_dir(orig_dir, CD_SKIP_CHDIR);
365 if (path_is_daemon_excluded(cpy, 0))
371 if (pathname == F_PATHNAME(file))
373 dir = F_PATHNAME(file);
375 dirlen = strlen(dir);
376 } else if (pathname == dir)
378 if (dir && *dir != '/')
379 change_dir(orig_dir, CD_SKIP_CHDIR);
383 pathname_len = dirlen;
388 if (!change_dir(dir, CD_NORMAL)) {
390 io_error |= IOERR_GENERAL;
391 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
393 change_dir(orig_dir, CD_NORMAL);
402 static void send_file_entry(int f, const char *fname, struct file_struct *file,
404 const char *symlink_name, int symlink_len,
406 int ndx, int first_ndx)
408 static time_t modtime;
410 #ifdef SUPPORT_HARD_LINKS
414 static uint32 rdev_major;
417 static const char *user_name, *group_name;
418 static char lastname[MAXPATHLEN];
419 #ifdef SUPPORT_HARD_LINKS
420 int first_hlink_ndx = -1;
425 /* Initialize starting value of xflags and adjust counts. */
426 if (S_ISREG(file->mode))
428 else if (S_ISDIR(file->mode)) {
430 if (protocol_version >= 30) {
431 if (file->flags & FLAG_CONTENT_DIR)
432 xflags = file->flags & FLAG_TOP_DIR;
433 else if (file->flags & FLAG_IMPLIED_DIR)
434 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
436 xflags = XMIT_NO_CONTENT_DIR;
438 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
440 if (S_ISLNK(file->mode))
441 stats.num_symlinks++;
442 else if (IS_DEVICE(file->mode))
444 else if (IS_SPECIAL(file->mode))
445 stats.num_specials++;
449 if (file->mode == mode)
450 xflags |= XMIT_SAME_MODE;
454 if (preserve_devices && IS_DEVICE(mode)) {
455 if (protocol_version < 28) {
456 if (tmp_rdev == rdev)
457 xflags |= XMIT_SAME_RDEV_pre28;
462 if ((uint32)major(rdev) == rdev_major)
463 xflags |= XMIT_SAME_RDEV_MAJOR;
465 rdev_major = major(rdev);
466 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
467 xflags |= XMIT_RDEV_MINOR_8_pre30;
469 } else if (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31) {
470 /* Special files don't need an rdev number, so just make
471 * the historical transmission of the value efficient. */
472 if (protocol_version < 28)
473 xflags |= XMIT_SAME_RDEV_pre28;
475 rdev = MAKEDEV(major(rdev), 0);
476 xflags |= XMIT_SAME_RDEV_MAJOR;
477 if (protocol_version < 30)
478 xflags |= XMIT_RDEV_MINOR_8_pre30;
480 } else if (protocol_version < 28)
481 rdev = MAKEDEV(0, 0);
482 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
483 xflags |= XMIT_SAME_UID;
487 user_name = add_uid(uid);
488 if (inc_recurse && user_name)
489 xflags |= XMIT_USER_NAME_FOLLOWS;
492 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
493 xflags |= XMIT_SAME_GID;
497 group_name = add_gid(gid);
498 if (inc_recurse && group_name)
499 xflags |= XMIT_GROUP_NAME_FOLLOWS;
502 if (file->modtime == modtime)
503 xflags |= XMIT_SAME_TIME;
505 modtime = file->modtime;
506 if (NSEC_BUMP(file) && protocol_version >= 31)
507 xflags |= XMIT_MOD_NSEC;
509 #ifdef SUPPORT_HARD_LINKS
511 if (protocol_version >= 30) {
512 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
513 first_hlink_ndx = (int32)(long)np->data - 1;
514 if (first_hlink_ndx < 0) {
515 np->data = (void*)(long)(first_ndx + ndx + 1);
516 xflags |= XMIT_HLINK_FIRST;
518 if (DEBUG_GTE(HLINK, 1)) {
519 if (first_hlink_ndx >= 0) {
520 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
521 who_am_i(), first_ndx + ndx, first_hlink_ndx,
522 first_hlink_ndx >= first_ndx ? "" : "un");
523 } else if (DEBUG_GTE(HLINK, 3)) {
524 rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
525 who_am_i(), first_ndx + ndx,
526 big_num(tmp_dev), big_num(tmp_ino));
530 if (tmp_dev == dev) {
531 if (protocol_version >= 28)
532 xflags |= XMIT_SAME_DEV_pre30;
536 xflags |= XMIT_HLINKED;
541 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
543 l2 = strlen(fname+l1);
546 xflags |= XMIT_SAME_NAME;
548 xflags |= XMIT_LONG_NAME;
550 /* We must make sure we don't send a zero flag byte or the
551 * other end will terminate the flist transfer. Note that
552 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
553 * it's harmless way to add a bit to the first flag byte. */
554 if (protocol_version >= 28) {
555 if (!xflags && !S_ISDIR(mode))
556 xflags |= XMIT_TOP_DIR;
557 if ((xflags & 0xFF00) || !xflags) {
558 xflags |= XMIT_EXTENDED_FLAGS;
559 write_shortint(f, xflags);
561 write_byte(f, xflags);
563 if (!(xflags & 0xFF))
564 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
565 write_byte(f, xflags);
567 if (xflags & XMIT_SAME_NAME)
569 if (xflags & XMIT_LONG_NAME)
570 write_varint30(f, l2);
573 write_buf(f, fname + l1, l2);
575 #ifdef SUPPORT_HARD_LINKS
576 if (first_hlink_ndx >= 0) {
577 write_varint(f, first_hlink_ndx);
578 if (first_hlink_ndx >= first_ndx)
583 write_varlong30(f, F_LENGTH(file), 3);
584 if (!(xflags & XMIT_SAME_TIME)) {
585 if (protocol_version >= 30)
586 write_varlong(f, modtime, 4);
588 write_int(f, modtime);
590 if (xflags & XMIT_MOD_NSEC)
591 write_varint(f, F_MOD_NSEC(file));
592 if (!(xflags & XMIT_SAME_MODE))
593 write_int(f, to_wire_mode(mode));
594 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
595 if (protocol_version < 30)
598 write_varint(f, uid);
599 if (xflags & XMIT_USER_NAME_FOLLOWS) {
600 int len = strlen(user_name);
602 write_buf(f, user_name, len);
606 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
607 if (protocol_version < 30)
610 write_varint(f, gid);
611 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
612 int len = strlen(group_name);
614 write_buf(f, group_name, len);
618 if ((preserve_devices && IS_DEVICE(mode))
619 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
620 if (protocol_version < 28) {
621 if (!(xflags & XMIT_SAME_RDEV_pre28))
622 write_int(f, (int)rdev);
624 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
625 write_varint30(f, major(rdev));
626 if (protocol_version >= 30)
627 write_varint(f, minor(rdev));
628 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
629 write_byte(f, minor(rdev));
631 write_int(f, minor(rdev));
637 write_varint30(f, symlink_len);
638 write_buf(f, symlink_name, symlink_len);
642 #ifdef SUPPORT_HARD_LINKS
643 if (tmp_dev != 0 && protocol_version < 30) {
644 if (protocol_version < 26) {
645 /* 32-bit dev_t and ino_t */
646 write_int(f, (int32)dev);
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);
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(struct file_list *flist,
680 static int64 modtime;
682 #ifdef SUPPORT_HARD_LINKS
686 static uint32 rdev_major;
689 static uint16 gid_flags;
690 static char lastname[MAXPATHLEN], *lastdir;
691 static int lastdir_depth, lastdir_len = -1;
692 static unsigned int del_hier_name_len = 0;
693 static int in_del_hier = 0;
694 char thisname[MAXPATHLEN];
695 unsigned int l1 = 0, l2 = 0;
696 int alloc_len, basename_len, linkname_len;
697 int extra_len = file_extra_cnt * EXTRA_LEN;
698 int first_hlink_ndx = -1;
701 const char *basename;
702 struct file_struct *file;
706 if (xflags & XMIT_SAME_NAME)
709 if (xflags & XMIT_LONG_NAME)
710 l2 = read_varint30(f);
714 if (l2 >= MAXPATHLEN - l1) {
716 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
717 xflags, l1, l2, lastname, who_am_i());
718 overflow_exit("recv_file_entry");
721 strlcpy(thisname, lastname, l1 + 1);
722 read_sbuf(f, &thisname[l1], l2);
723 thisname[l1 + l2] = 0;
725 /* Abuse basename_len for a moment... */
726 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
729 if (ic_recv != (iconv_t)-1) {
732 INIT_CONST_XBUF(outbuf, thisname);
733 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
735 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
736 io_error |= IOERR_GENERAL;
738 "[%s] cannot convert filename: %s (%s)\n",
739 who_am_i(), lastname, strerror(errno));
742 thisname[outbuf.len] = '\0';
747 clean_fname(thisname, 0);
750 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
752 if ((basename = strrchr(thisname, '/')) != NULL) {
753 int len = basename++ - thisname;
754 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
755 lastdir = new_array(char, len + 1);
756 memcpy(lastdir, thisname, len);
759 lastdir_depth = count_dir_elements(lastdir);
763 basename_len = strlen(basename) + 1; /* count the '\0' */
765 #ifdef SUPPORT_HARD_LINKS
766 if (protocol_version >= 30
767 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
768 first_hlink_ndx = read_varint(f);
769 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
771 "hard-link reference out of range: %d (%d)\n",
772 first_hlink_ndx, flist->ndx_start + flist->used);
773 exit_cleanup(RERR_PROTOCOL);
775 if (DEBUG_GTE(HLINK, 1)) {
776 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
777 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
778 first_hlink_ndx >= flist->ndx_start ? "" : "un");
780 if (first_hlink_ndx >= flist->ndx_start) {
781 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
782 file_length = F_LENGTH(first);
783 modtime = first->modtime;
784 modtime_nsec = F_MOD_NSEC(first);
787 uid = F_OWNER(first);
789 gid = F_GROUP(first);
790 if (preserve_devices && IS_DEVICE(mode)) {
791 uint32 *devp = F_RDEV_P(first);
792 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
793 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
795 if (preserve_links && S_ISLNK(mode))
796 linkname_len = strlen(F_SYMLINK(first)) + 1;
804 file_length = read_varlong30(f, 3);
805 if (!(xflags & XMIT_SAME_TIME)) {
806 if (protocol_version >= 30) {
807 modtime = read_varlong(f, 4);
808 #if SIZEOF_TIME_T < SIZEOF_INT64
809 if (!am_generator && (int64)(time_t)modtime != modtime) {
811 "Time value of %s truncated on receiver.\n",
816 modtime = read_int(f);
818 if (xflags & XMIT_MOD_NSEC)
819 modtime_nsec = read_varint(f);
822 if (!(xflags & XMIT_SAME_MODE))
823 mode = from_wire_mode(read_int(f));
825 if (chmod_modes && !S_ISLNK(mode) && mode)
826 mode = tweak_mode(mode, chmod_modes);
828 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
829 if (protocol_version < 30)
830 uid = (uid_t)read_int(f);
832 uid = (uid_t)read_varint(f);
833 if (xflags & XMIT_USER_NAME_FOLLOWS)
834 uid = recv_user_name(f, uid);
835 else if (inc_recurse && am_root && (!numeric_ids || usermap))
836 uid = match_uid(uid);
839 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
840 if (protocol_version < 30)
841 gid = (gid_t)read_int(f);
843 gid = (gid_t)read_varint(f);
845 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
846 gid = recv_group_name(f, gid, &gid_flags);
847 else if (inc_recurse && (!am_root || !numeric_ids || groupmap))
848 gid = match_gid(gid, &gid_flags);
852 if ((preserve_devices && IS_DEVICE(mode))
853 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
854 if (protocol_version < 28) {
855 if (!(xflags & XMIT_SAME_RDEV_pre28))
856 rdev = (dev_t)read_int(f);
859 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
860 rdev_major = read_varint30(f);
861 if (protocol_version >= 30)
862 rdev_minor = read_varint(f);
863 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
864 rdev_minor = read_byte(f);
866 rdev_minor = read_int(f);
867 rdev = MAKEDEV(rdev_major, rdev_minor);
870 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
872 } else if (protocol_version < 28)
873 rdev = MAKEDEV(0, 0);
876 if (preserve_links && S_ISLNK(mode)) {
877 linkname_len = read_varint30(f) + 1; /* count the '\0' */
878 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
879 rprintf(FERROR, "overflow: linkname_len=%d\n",
881 overflow_exit("recv_file_entry");
884 /* We don't know how much extra room we need to convert
885 * the as-yet-unread symlink data, so let's hope that a
886 * double-size buffer is plenty. */
887 if (sender_symlink_iconv)
891 linkname_len += SYMLINK_PREFIX_LEN;
897 #ifdef SUPPORT_HARD_LINKS
899 if (preserve_hard_links) {
900 if (protocol_version < 28 && S_ISREG(mode))
901 xflags |= XMIT_HLINKED;
902 if (xflags & XMIT_HLINKED)
903 extra_len += (inc_recurse+1) * EXTRA_LEN;
908 /* Directories need an extra int32 for the default ACL. */
909 if (preserve_acls && S_ISDIR(mode))
910 extra_len += EXTRA_LEN;
913 if (always_checksum && S_ISREG(mode))
914 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
916 #if SIZEOF_INT64 >= 8
917 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
918 extra_len += EXTRA_LEN;
920 #ifdef HAVE_UTIMENSAT
922 extra_len += EXTRA_LEN;
924 if (file_length < 0) {
925 rprintf(FERROR, "Offset underflow: file-length is negative\n");
926 exit_cleanup(RERR_UNSUPPORTED);
929 if (inc_recurse && S_ISDIR(mode)) {
930 if (one_file_system) {
931 /* Room to save the dir's device for -x */
932 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
934 pool = dir_flist->file_pool;
936 pool = flist->file_pool;
938 #if EXTRA_ROUNDING > 0
939 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
940 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
943 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
945 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
947 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
949 file = (struct file_struct *)bp;
950 bp += FILE_STRUCT_LEN;
952 memcpy(bp, basename, basename_len);
954 #ifdef SUPPORT_HARD_LINKS
955 if (xflags & XMIT_HLINKED)
956 file->flags |= FLAG_HLINKED;
958 file->modtime = (time_t)modtime;
959 #ifdef HAVE_UTIMENSAT
961 file->flags |= FLAG_MOD_NSEC;
962 OPT_EXTRA(file, 0)->unum = modtime_nsec;
965 file->len32 = (uint32)file_length;
966 #if SIZEOF_INT64 >= 8
967 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
968 #if SIZEOF_CAPITAL_OFF_T < 8
969 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
970 exit_cleanup(RERR_UNSUPPORTED);
972 file->flags |= FLAG_LENGTH64;
973 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(file_length >> 32);
982 file->flags |= gid_flags;
985 F_NDX(file) = flist->used + flist->ndx_start;
987 if (basename != thisname) {
988 file->dirname = lastdir;
989 F_DEPTH(file) = lastdir_depth + 1;
994 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
996 if (protocol_version >= 30) {
997 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
998 if (xflags & XMIT_TOP_DIR)
999 file->flags |= FLAG_TOP_DIR;
1000 file->flags |= FLAG_CONTENT_DIR;
1001 } else if (xflags & XMIT_TOP_DIR)
1002 file->flags |= FLAG_IMPLIED_DIR;
1003 } else if (xflags & XMIT_TOP_DIR) {
1004 in_del_hier = recurse;
1005 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
1006 if (relative_paths && del_hier_name_len > 2
1007 && lastname[del_hier_name_len-1] == '.'
1008 && lastname[del_hier_name_len-2] == '/')
1009 del_hier_name_len -= 2;
1010 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
1011 } else if (in_del_hier) {
1012 if (!relative_paths || !del_hier_name_len
1013 || (l1 >= del_hier_name_len
1014 && lastname[del_hier_name_len] == '/'))
1015 file->flags |= FLAG_CONTENT_DIR;
1021 if (preserve_devices && IS_DEVICE(mode)) {
1022 uint32 *devp = F_RDEV_P(file);
1023 DEV_MAJOR(devp) = major(rdev);
1024 DEV_MINOR(devp) = minor(rdev);
1027 #ifdef SUPPORT_LINKS
1030 if (first_hlink_ndx >= flist->ndx_start) {
1031 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1032 memcpy(bp, F_SYMLINK(first), linkname_len);
1034 if (munge_symlinks) {
1035 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
1036 bp += SYMLINK_PREFIX_LEN;
1037 linkname_len -= SYMLINK_PREFIX_LEN;
1040 if (sender_symlink_iconv) {
1043 alloc_len = linkname_len;
1046 /* Read the symlink data into the end of our double-sized
1047 * buffer and then convert it into the right spot. */
1048 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
1049 linkname_len - 1, (size_t)-1);
1050 read_sbuf(f, inbuf.buf, inbuf.len);
1051 INIT_XBUF(outbuf, bp, 0, alloc_len);
1053 if (iconvbufs(ic_recv, &inbuf, &outbuf, 0) < 0) {
1054 io_error |= IOERR_GENERAL;
1055 rprintf(FERROR_XFER,
1056 "[%s] cannot convert symlink data for: %s (%s)\n",
1057 who_am_i(), full_fname(thisname), strerror(errno));
1058 bp = (char*)file->basename;
1062 bp[outbuf.len] = '\0';
1065 read_sbuf(f, bp, linkname_len - 1);
1066 if (sanitize_paths && !munge_symlinks && *bp)
1067 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1072 #ifdef SUPPORT_HARD_LINKS
1073 if (preserve_hard_links && xflags & XMIT_HLINKED) {
1074 if (protocol_version >= 30) {
1075 if (xflags & XMIT_HLINK_FIRST) {
1076 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1078 F_HL_GNUM(file) = first_hlink_ndx;
1080 static int32 cnt = 0;
1081 struct ht_int64_node *np;
1084 if (protocol_version < 26) {
1088 if (!(xflags & XMIT_SAME_DEV_pre30))
1089 dev = read_longint(f);
1090 ino = read_longint(f);
1092 np = idev_find(dev, ino);
1093 ndx = (int32)(long)np->data - 1;
1096 np->data = (void*)(long)cnt;
1098 F_HL_GNUM(file) = ndx;
1103 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1107 /* Prior to 28, we get a useless set of nulls. */
1110 if (first_hlink_ndx >= flist->ndx_start) {
1111 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1112 memcpy(bp, F_SUM(first), checksum_len);
1114 read_buf(f, bp, checksum_len);
1118 if (preserve_acls && !S_ISLNK(mode))
1119 receive_acl(file, f);
1121 #ifdef SUPPORT_XATTRS
1122 if (preserve_xattrs)
1123 receive_xattr(file, f );
1126 if (S_ISREG(mode) || S_ISLNK(mode))
1127 stats.total_size += file_length;
1132 /* Create a file_struct for a named file by reading its stat() information
1133 * and performing extensive checks against global options.
1135 * Returns a pointer to the new file struct, or NULL if there was an error
1136 * or this file should be excluded.
1138 * Note: Any error (here or in send_file_name) that results in the omission of
1139 * an existent source file from the file list should set
1140 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1141 * destination if --delete is on. */
1142 struct file_struct *make_file(const char *fname, struct file_list *flist,
1143 STRUCT_STAT *stp, int flags, int filter_level)
1145 static char *lastdir;
1146 static int lastdir_len = -1;
1147 struct file_struct *file;
1148 char thisname[MAXPATHLEN];
1149 char linkname[MAXPATHLEN];
1150 int alloc_len, basename_len, linkname_len;
1151 int extra_len = file_extra_cnt * EXTRA_LEN;
1152 const char *basename;
1157 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1158 io_error |= IOERR_GENERAL;
1159 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1162 clean_fname(thisname, 0);
1164 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1166 if (stp && (S_ISDIR(stp->st_mode) || stp->st_mode == 0)) {
1167 /* This is needed to handle a "symlink/." with a --relative
1168 * dir, or a request to delete a specific file. */
1170 *linkname = '\0'; /* make IBM code checker happy */
1171 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1172 int save_errno = errno;
1173 /* See if file is excluded before reporting an error. */
1174 if (filter_level != NO_FILTERS
1175 && (is_excluded(thisname, 0, filter_level)
1176 || is_excluded(thisname, 1, filter_level))) {
1177 if (ignore_perishable && save_errno != ENOENT)
1178 non_perishable_cnt++;
1181 if (save_errno == ENOENT) {
1182 #ifdef SUPPORT_LINKS
1183 /* When our options tell us to follow a symlink that
1184 * points nowhere, tell the user about the symlink
1185 * instead of giving a "vanished" message. We only
1186 * dereference a symlink if one of the --copy*links
1187 * options was specified, so there's no need for the
1188 * extra lstat() if one of these options isn't on. */
1189 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1190 && x_lstat(thisname, &st, NULL) == 0
1191 && S_ISLNK(st.st_mode)) {
1192 io_error |= IOERR_GENERAL;
1193 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1194 full_fname(thisname));
1198 enum logcode c = am_daemon && protocol_version < 28
1199 ? FERROR : FWARNING;
1200 io_error |= IOERR_VANISHED;
1201 rprintf(c, "file has vanished: %s\n",
1202 full_fname(thisname));
1205 io_error |= IOERR_GENERAL;
1206 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1207 full_fname(thisname));
1210 } else if (st.st_mode == 0) {
1211 io_error |= IOERR_GENERAL;
1212 rprintf(FINFO, "skipping file with bogus (zero) st_mode: %s\n",
1213 full_fname(thisname));
1217 if (filter_level == NO_FILTERS)
1220 if (S_ISDIR(st.st_mode)) {
1222 rprintf(FINFO, "skipping directory %s\n", thisname);
1225 /* -x only affects dirs because we need to avoid recursing
1226 * into a mount-point directory, not to avoid copying a
1227 * symlinked file if -L (or similar) was specified. */
1228 if (one_file_system && st.st_dev != filesystem_dev
1229 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1230 if (one_file_system > 1) {
1231 if (INFO_GTE(MOUNT, 1)) {
1233 "[%s] skipping mount-point dir %s\n",
1234 who_am_i(), thisname);
1238 flags |= FLAG_MOUNT_DIR;
1239 flags &= ~FLAG_CONTENT_DIR;
1242 flags &= ~FLAG_CONTENT_DIR;
1244 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1245 if (ignore_perishable)
1246 non_perishable_cnt++;
1250 if (lp_ignore_nonreadable(module_id)) {
1251 #ifdef SUPPORT_LINKS
1252 if (!S_ISLNK(st.st_mode))
1254 if (access(thisname, R_OK) != 0)
1260 /* Only divert a directory in the main transfer. */
1262 if (flist->prev && S_ISDIR(st.st_mode)
1263 && flags & FLAG_DIVERT_DIRS) {
1264 /* Room for parent/sibling/next-child info. */
1265 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1267 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1268 pool = dir_flist->file_pool;
1270 pool = flist->file_pool;
1273 /* Directories need an extra int32 for the default ACL. */
1274 if (preserve_acls && S_ISDIR(st.st_mode))
1275 extra_len += EXTRA_LEN;
1280 if (DEBUG_GTE(FLIST, 2)) {
1281 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1282 who_am_i(), thisname, filter_level);
1285 if ((basename = strrchr(thisname, '/')) != NULL) {
1286 int len = basename++ - thisname;
1287 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1288 lastdir = new_array(char, len + 1);
1289 memcpy(lastdir, thisname, len);
1290 lastdir[len] = '\0';
1294 basename = thisname;
1295 basename_len = strlen(basename) + 1; /* count the '\0' */
1297 #ifdef SUPPORT_LINKS
1298 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1303 #ifdef ST_MTIME_NSEC
1304 if (st.ST_MTIME_NSEC && protocol_version >= 31)
1305 extra_len += EXTRA_LEN;
1307 #if SIZEOF_CAPITAL_OFF_T >= 8
1308 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1309 extra_len += EXTRA_LEN;
1312 if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1313 file_checksum(thisname, tmp_sum, st.st_size);
1314 if (sender_keeps_checksum)
1315 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1318 #if EXTRA_ROUNDING > 0
1319 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1320 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1323 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1326 bp = pool_alloc(pool, alloc_len, "make_file");
1328 if (!(bp = new_array(char, alloc_len)))
1329 out_of_memory("make_file");
1332 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1334 file = (struct file_struct *)bp;
1335 bp += FILE_STRUCT_LEN;
1337 memcpy(bp, basename, basename_len);
1339 #ifdef SUPPORT_HARD_LINKS
1340 if (preserve_hard_links && flist && flist->prev) {
1341 if (protocol_version >= 28
1342 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1343 : S_ISREG(st.st_mode)) {
1344 tmp_dev = (int64)st.st_dev + 1;
1345 tmp_ino = (int64)st.st_ino;
1351 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1352 if (IS_DEVICE(st.st_mode)) {
1353 tmp_rdev = st.st_rdev;
1355 } else if (IS_SPECIAL(st.st_mode))
1359 file->flags = flags;
1360 file->modtime = st.st_mtime;
1361 #ifdef ST_MTIME_NSEC
1362 if (st.ST_MTIME_NSEC && protocol_version >= 31) {
1363 file->flags |= FLAG_MOD_NSEC;
1364 OPT_EXTRA(file, 0)->unum = st.ST_MTIME_NSEC;
1367 file->len32 = (uint32)st.st_size;
1368 #if SIZEOF_CAPITAL_OFF_T >= 8
1369 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1370 file->flags |= FLAG_LENGTH64;
1371 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(st.st_size >> 32);
1374 file->mode = st.st_mode;
1375 if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1376 F_OWNER(file) = st.st_uid;
1377 if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1378 F_GROUP(file) = st.st_gid;
1380 if (basename != thisname)
1381 file->dirname = lastdir;
1383 #ifdef SUPPORT_LINKS
1385 memcpy(bp + basename_len, linkname, linkname_len);
1389 F_PATHNAME(file) = pathname;
1391 F_DEPTH(file) = extra_len / EXTRA_LEN;
1393 if (basename_len == 0+1) {
1399 if (sender_keeps_checksum && S_ISREG(st.st_mode))
1400 memcpy(F_SUM(file), tmp_sum, checksum_len);
1403 F_NDX(file) = stats.num_dirs;
1408 /* Only called for temporary file_struct entries created by make_file(). */
1409 void unmake_file(struct file_struct *file)
1411 free(REQ_EXTRA(file, F_DEPTH(file)));
1414 static struct file_struct *send_file_name(int f, struct file_list *flist,
1415 const char *fname, STRUCT_STAT *stp,
1416 int flags, int filter_level)
1418 struct file_struct *file;
1420 file = make_file(fname, flist, stp, flags, filter_level);
1424 if (chmod_modes && !S_ISLNK(file->mode) && file->mode)
1425 file->mode = tweak_mode(file->mode, chmod_modes);
1428 char fbuf[MAXPATHLEN];
1429 #ifdef SUPPORT_LINKS
1430 const char *symlink_name;
1433 char symlink_buf[MAXPATHLEN];
1436 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1441 #ifdef SUPPORT_LINKS
1442 if (preserve_links && S_ISLNK(file->mode)) {
1443 symlink_name = F_SYMLINK(file);
1444 symlink_len = strlen(symlink_name);
1445 if (symlink_len == 0) {
1446 io_error |= IOERR_GENERAL;
1448 rprintf(FERROR_XFER,
1449 "skipping symlink with 0-length value: %s\n",
1454 symlink_name = NULL;
1460 if (ic_send != (iconv_t)-1) {
1463 INIT_CONST_XBUF(outbuf, fbuf);
1465 if (file->dirname) {
1466 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1467 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1468 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0)
1471 fbuf[outbuf.len++] = '/';
1474 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1475 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1477 io_error |= IOERR_GENERAL;
1478 rprintf(FERROR_XFER,
1479 "[%s] cannot convert filename: %s (%s)\n",
1480 who_am_i(), f_name(file, fbuf), strerror(errno));
1483 fbuf[outbuf.len] = '\0';
1485 #ifdef SUPPORT_LINKS
1486 if (symlink_len && sender_symlink_iconv) {
1487 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1488 INIT_CONST_XBUF(outbuf, symlink_buf);
1489 if (iconvbufs(ic_send, &inbuf, &outbuf, 0) < 0) {
1490 io_error |= IOERR_GENERAL;
1492 rprintf(FERROR_XFER,
1493 "[%s] cannot convert symlink data for: %s (%s)\n",
1494 who_am_i(), full_fname(fbuf), strerror(errno));
1497 symlink_buf[outbuf.len] = '\0';
1499 symlink_name = symlink_buf;
1500 symlink_len = outbuf.len;
1508 if (preserve_acls && !S_ISLNK(file->mode)) {
1509 sx.st.st_mode = file->mode;
1510 if (get_acl(fname, &sx) < 0) {
1511 io_error |= IOERR_GENERAL;
1516 #ifdef SUPPORT_XATTRS
1517 if (preserve_xattrs) {
1518 sx.st.st_mode = file->mode;
1519 if (get_xattr(fname, &sx) < 0) {
1520 io_error |= IOERR_GENERAL;
1526 send_file_entry(f, fbuf, file,
1527 #ifdef SUPPORT_LINKS
1528 symlink_name, symlink_len,
1530 flist->used, flist->ndx_start);
1533 if (preserve_acls && !S_ISLNK(file->mode)) {
1538 #ifdef SUPPORT_XATTRS
1539 if (preserve_xattrs) {
1540 F_XATTR(file) = send_xattr(&sx, f);
1546 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1548 flist_expand(flist, 1);
1549 flist->files[flist->used++] = file;
1554 static void send_if_directory(int f, struct file_list *flist,
1555 struct file_struct *file,
1556 char *fbuf, unsigned int ol,
1559 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1561 if (S_ISDIR(file->mode)
1562 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1564 unsigned int len = strlen(fbuf);
1565 if (len > 1 && fbuf[len-1] == '/')
1567 if (len >= MAXPATHLEN - 1) {
1568 io_error |= IOERR_GENERAL;
1569 rprintf(FERROR_XFER, "skipping long-named directory: %s\n",
1573 save_filters = push_local_filters(fbuf, len);
1574 send_directory(f, flist, fbuf, len, flags);
1575 pop_local_filters(save_filters);
1582 static int file_compare(const void *file1, const void *file2)
1584 return f_name_cmp(*(struct file_struct **)file1,
1585 *(struct file_struct **)file2);
1588 /* The guts of a merge-sort algorithm. This was derived from the glibc
1589 * version, but I (Wayne) changed the merge code to do less copying and
1590 * to require only half the amount of temporary memory. */
1591 static void fsort_tmp(struct file_struct **fp, size_t num,
1592 struct file_struct **tmp)
1594 struct file_struct **f1, **f2, **t;
1603 fsort_tmp(f1, n1, tmp);
1605 fsort_tmp(f2, n2, tmp);
1607 while (f_name_cmp(*f1, *f2) <= 0) {
1614 memcpy(t, f1, n1 * PTR_SIZE);
1616 *f1++ = *f2++, n2--;
1618 while (n1 > 0 && n2 > 0) {
1619 if (f_name_cmp(*t, *f2) <= 0)
1622 *f1++ = *f2++, n2--;
1626 memcpy(f1, t, n1 * PTR_SIZE);
1629 /* This file-struct sorting routine makes sure that any identical names in
1630 * the file list stay in the same order as they were in the original list.
1631 * This is particularly vital in inc_recurse mode where we expect a sort
1632 * on the flist to match the exact order of a sort on the dir_flist. */
1633 static void fsort(struct file_struct **fp, size_t num)
1639 qsort(fp, num, PTR_SIZE, file_compare);
1641 struct file_struct **tmp = new_array(struct file_struct *,
1643 fsort_tmp(fp, num, tmp);
1648 /* We take an entire set of sibling dirs from the sorted flist and link them
1649 * into the tree, setting the appropriate parent/child/sibling pointers. */
1650 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1655 int32 *parent_dp = parent_ndx < 0 ? NULL
1656 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1658 flist_expand(dir_flist, dir_cnt);
1659 dir_flist->sorted = dir_flist->files;
1661 for (i = 0; dir_cnt; i++) {
1662 struct file_struct *file = from_flist->sorted[i];
1664 if (!S_ISDIR(file->mode))
1667 dir_flist->files[dir_flist->used++] = file;
1670 if (file->basename[0] == '.' && file->basename[1] == '\0')
1674 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1676 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1678 send_dir_ndx = dir_flist->used - 1;
1680 dp = F_DIR_NODE_P(file);
1681 DIR_PARENT(dp) = parent_ndx;
1682 DIR_FIRST_CHILD(dp) = -1;
1685 DIR_NEXT_SIBLING(dp) = -1;
1688 static void interpret_stat_error(const char *fname, int is_dir)
1690 if (errno == ENOENT) {
1691 io_error |= IOERR_VANISHED;
1692 rprintf(FWARNING, "%s has vanished: %s\n",
1693 is_dir ? "directory" : "file", full_fname(fname));
1695 io_error |= IOERR_GENERAL;
1696 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1701 /* This function is normally called by the sender, but the receiving side also
1702 * calls it from get_dirlist() with f set to -1 so that we just construct the
1703 * file list in memory without sending it over the wire. Also, get_dirlist()
1704 * might call this with f set to -2, which also indicates that local filter
1705 * rules should be ignored. */
1706 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1713 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1714 int start = flist->used;
1715 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1717 assert(flist != NULL);
1719 if (!(d = opendir(fbuf))) {
1720 if (errno == ENOENT) {
1721 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1722 interpret_stat_error(fbuf, True);
1725 io_error |= IOERR_GENERAL;
1726 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1731 if (len != 1 || *fbuf != '/')
1734 remainder = MAXPATHLEN - (p - fbuf);
1736 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1737 char *dname = d_name(di);
1738 if (dname[0] == '.' && (dname[1] == '\0'
1739 || (dname[1] == '.' && dname[2] == '\0')))
1741 if (strlcpy(p, dname, remainder) >= remainder) {
1742 io_error |= IOERR_GENERAL;
1743 rprintf(FERROR_XFER,
1744 "cannot send long-named file %s\n",
1748 if (dname[0] == '\0') {
1749 io_error |= IOERR_GENERAL;
1750 rprintf(FERROR_XFER,
1751 "cannot send file with empty name in %s\n",
1756 send_file_name(f, flist, fbuf, NULL, flags, filter_level);
1762 io_error |= IOERR_GENERAL;
1763 rsyserr(FERROR_XFER, errno, "readdir(%s)", full_fname(fbuf));
1768 if (f >= 0 && recurse && !divert_dirs) {
1769 int i, end = flist->used - 1;
1770 /* send_if_directory() bumps flist->used, so use "end". */
1771 for (i = start; i <= end; i++)
1772 send_if_directory(f, flist, flist->files[i], fbuf, len, flags);
1776 static void send_implied_dirs(int f, struct file_list *flist, char *fname,
1777 char *start, char *limit, int flags, char name_type)
1779 static char lastpath[MAXPATHLEN] = "";
1780 static int lastpath_len = 0;
1781 static struct file_struct *lastpath_struct = NULL;
1782 struct file_struct *file;
1783 item_list *relname_list;
1784 relnamecache **rnpp;
1785 int len, need_new_dir, depth = 0;
1786 filter_rule_list save_filter_list = filter_list;
1788 flags = (flags | FLAG_IMPLIED_DIR) & ~(FLAG_TOP_DIR | FLAG_CONTENT_DIR);
1789 filter_list.head = filter_list.tail = NULL; /* Don't filter implied dirs. */
1792 if (lastpath_struct && F_PATHNAME(lastpath_struct) == pathname
1793 && lastpath_len == limit - fname
1794 && strncmp(lastpath, fname, lastpath_len) == 0)
1799 char *tp = fname, *lp = lastpath;
1800 /* Skip any initial directories in our path that we
1801 * have in common with lastpath. */
1802 assert(start == fname);
1803 for ( ; ; tp++, lp++) {
1805 if (*lp == '/' || *lp == '\0')
1820 int save_copy_links = copy_links;
1821 int save_xfer_dirs = xfer_dirs;
1824 copy_links = xfer_dirs = 1;
1828 for (slash = start; (slash = strchr(slash+1, '/')) != NULL; ) {
1830 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1832 if (!inc_recurse && file && S_ISDIR(file->mode))
1833 change_local_filter_dir(fname, strlen(fname), depth);
1837 file = send_file_name(f, flist, fname, NULL, flags, ALL_FILTERS);
1839 if (file && !S_ISDIR(file->mode))
1841 lastpath_struct = file;
1842 } else if (file && S_ISDIR(file->mode))
1843 change_local_filter_dir(fname, strlen(fname), ++depth);
1845 strlcpy(lastpath, fname, sizeof lastpath);
1846 lastpath_len = limit - fname;
1850 copy_links = save_copy_links;
1851 xfer_dirs = save_xfer_dirs;
1857 if (!lastpath_struct)
1858 goto done; /* dir must have vanished */
1860 len = strlen(limit+1);
1861 memcpy(&relname_list, F_DIR_RELNAMES_P(lastpath_struct), sizeof relname_list);
1862 if (!relname_list) {
1863 if (!(relname_list = new0(item_list)))
1864 out_of_memory("send_implied_dirs");
1865 memcpy(F_DIR_RELNAMES_P(lastpath_struct), &relname_list, sizeof relname_list);
1867 rnpp = EXPAND_ITEM_LIST(relname_list, relnamecache *, 32);
1868 if (!(*rnpp = (relnamecache*)new_array(char, sizeof (relnamecache) + len)))
1869 out_of_memory("send_implied_dirs");
1870 (*rnpp)->name_type = name_type;
1871 strlcpy((*rnpp)->fname, limit+1, len + 1);
1874 filter_list = save_filter_list;
1877 static void send1extra(int f, struct file_struct *file, struct file_list *flist)
1879 char fbuf[MAXPATHLEN];
1880 item_list *relname_list;
1881 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1885 dlen = strlen(fbuf);
1887 if (!change_pathname(file, NULL, 0))
1888 exit_cleanup(RERR_FILESELECT);
1890 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1892 if (file->flags & FLAG_CONTENT_DIR) {
1893 if (one_file_system) {
1895 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1896 interpret_stat_error(fbuf, True);
1899 filesystem_dev = st.st_dev;
1901 send_directory(f, flist, fbuf, dlen, flags);
1904 if (!relative_paths)
1907 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1911 for (j = 0; j < relname_list->count; j++) {
1913 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1914 char name_type = rnp->name_type;
1917 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1919 if (len >= (int)sizeof fbuf)
1920 continue; /* Impossible... */
1922 slash = strchr(fbuf+dlen+1, '/');
1924 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1928 if (name_type != NORMAL_NAME) {
1930 if (link_stat(fbuf, &st, 1) != 0) {
1931 interpret_stat_error(fbuf, True);
1934 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1936 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1942 void send_extra_file_list(int f, int at_least)
1944 struct file_list *flist;
1947 int save_io_error = io_error;
1953 at_least = file_total - file_old_total + 1;
1955 /* Keep sending data until we have the requested number of
1956 * files in the upcoming file-lists. */
1957 while (file_total - file_old_total < at_least) {
1958 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1959 int dir_ndx, dstart = stats.num_dirs;
1960 const char *pathname = F_PATHNAME(file);
1963 flist = flist_new(0, "send_extra_file_list");
1964 start_write = stats.total_written;
1967 dir_ndx = F_NDX(file);
1969 dir_ndx = send_dir_ndx;
1970 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1971 flist->parent_ndx = dir_ndx;
1973 send1extra(f, file, flist);
1974 prev_flags = file->flags;
1975 dp = F_DIR_NODE_P(file);
1977 /* If there are any duplicate directory names that follow, we
1978 * send all the dirs together in one file-list. The dir_flist
1979 * tree links all the child subdirs onto the last dup dir. */
1980 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1981 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1982 send_dir_ndx = dir_ndx;
1983 file = dir_flist->sorted[dir_ndx];
1984 /* Try to avoid some duplicate scanning of identical dirs. */
1985 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1986 file->flags &= ~FLAG_CONTENT_DIR;
1987 send1extra(f, file, flist);
1988 prev_flags = file->flags;
1989 dp = F_DIR_NODE_P(file);
1992 if (protocol_version < 31 || io_error == save_io_error || ignore_errors)
1995 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
1996 write_varint(f, io_error);
1999 if (need_unsorted_flist) {
2000 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2001 out_of_memory("send_extra_file_list");
2002 memcpy(flist->sorted, flist->files,
2003 flist->used * sizeof (struct file_struct*));
2005 flist->sorted = flist->files;
2007 flist_sort_and_clean(flist, 0);
2009 add_dirs_to_tree(send_dir_ndx, flist, stats.num_dirs - dstart);
2010 flist_done_allocating(flist);
2012 file_total += flist->used;
2013 stats.flist_size += stats.total_written - start_write;
2014 stats.num_files += flist->used;
2015 if (DEBUG_GTE(FLIST, 3))
2016 output_flist(flist);
2018 if (DIR_FIRST_CHILD(dp) >= 0) {
2019 send_dir_ndx = DIR_FIRST_CHILD(dp);
2022 while (DIR_NEXT_SIBLING(dp) < 0) {
2023 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
2024 write_ndx(f, NDX_FLIST_EOF);
2026 change_local_filter_dir(NULL, 0, 0);
2030 file = dir_flist->sorted[send_dir_ndx];
2031 dp = F_DIR_NODE_P(file);
2033 send_dir_ndx = DIR_NEXT_SIBLING(dp);
2038 if (io_error != save_io_error && protocol_version == 30 && !ignore_errors)
2039 send_msg_int(MSG_IO_ERROR, io_error);
2042 struct file_list *send_file_list(int f, int argc, char *argv[])
2044 static const char *lastdir;
2045 static int lastdir_len = -1;
2049 struct file_list *flist;
2050 struct timeval start_tv, end_tv;
2053 int disable_buffering;
2054 int flags = recurse ? FLAG_CONTENT_DIR : 0;
2055 int reading_remotely = filesfrom_host != NULL;
2056 int rl_flags = (reading_remotely ? 0 : RL_DUMP_COMMENTS)
2058 | (filesfrom_convert ? RL_CONVERT : 0)
2060 | (eol_nulls || reading_remotely ? RL_EOL_NULLS : 0);
2061 int implied_dot_dir = 0;
2063 rprintf(FLOG, "building file list\n");
2064 if (show_filelist_p())
2065 start_filelist_progress("building file list");
2066 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2067 rprintf(FCLIENT, "sending incremental file list\n");
2069 start_write = stats.total_written;
2070 gettimeofday(&start_tv, NULL);
2072 if (relative_paths && protocol_version >= 30)
2073 implied_dirs = 1; /* We send flagged implied dirs */
2075 #ifdef SUPPORT_HARD_LINKS
2076 if (preserve_hard_links && protocol_version >= 30 && !cur_flist)
2080 flist = cur_flist = flist_new(0, "send_file_list");
2082 dir_flist = flist_new(FLIST_TEMP, "send_file_list");
2083 flags |= FLAG_DIVERT_DIRS;
2085 dir_flist = cur_flist;
2087 disable_buffering = io_start_buffering_out(f);
2088 if (filesfrom_fd >= 0) {
2089 if (argv[0] && !change_dir(argv[0], CD_NORMAL)) {
2090 rsyserr(FERROR_XFER, errno, "change_dir %s failed",
2091 full_fname(argv[0]));
2092 exit_cleanup(RERR_FILESELECT);
2098 orig_dir = strdup(curr_dir);
2101 char fbuf[MAXPATHLEN], *fn, name_type;
2104 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2106 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2110 strlcpy(fbuf, *argv++, MAXPATHLEN);
2112 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2116 if (relative_paths) {
2117 /* We clean up fbuf below. */
2118 name_type = NORMAL_NAME;
2119 } else if (!len || fbuf[len - 1] == '/') {
2120 if (len == 2 && fbuf[0] == '.') {
2121 /* Turn "./" into just "." rather than "./." */
2124 if (len + 1 >= MAXPATHLEN)
2125 overflow_exit("send_file_list");
2129 name_type = DOTDIR_NAME;
2130 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2131 && (len == 2 || fbuf[len-3] == '/')) {
2132 if (len + 2 >= MAXPATHLEN)
2133 overflow_exit("send_file_list");
2137 name_type = DOTDIR_NAME;
2138 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2139 name_type = DOTDIR_NAME;
2141 name_type = NORMAL_NAME;
2145 if (!relative_paths) {
2146 p = strrchr(fbuf, '/');
2153 len -= p - fbuf + 1;
2158 if ((p = strstr(fbuf, "/./")) != NULL) {
2164 clean_fname(dir, 0);
2170 *--fn = '\0'; /* ensure room for '.' */
2173 /* A leading ./ can be used in relative mode to affect
2174 * the dest dir without its name being in the path. */
2175 if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2176 send_file_name(f, flist, ".", NULL,
2177 (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2179 implied_dot_dir = 1;
2181 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2182 | CFN_DROP_TRAILING_DOT_DIR);
2187 name_type = DOTDIR_NAME;
2188 } else if (fn[0] == '.')
2189 name_type = DOTDIR_NAME;
2190 } else if (fn[len-1] == '/') {
2192 if (len == 1 && *fn == '.')
2193 name_type = DOTDIR_NAME;
2195 name_type = SLASH_ENDING_NAME;
2197 /* Reject a ".." dir in the active part of the path. */
2198 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2199 if ((p[2] == '/' || p[2] == '\0')
2200 && (p == fn || p[-1] == '/')) {
2202 "found \"..\" dir in relative path: %s\n",
2204 exit_cleanup(RERR_SYNTAX);
2212 name_type = DOTDIR_NAME;
2215 dirlen = dir ? strlen(dir) : 0;
2216 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2217 if (!change_pathname(NULL, dir, -dirlen))
2220 lastdir_len = pathname_len;
2221 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2225 memmove(fbuf, fn, len + 1);
2227 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2228 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2229 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2230 if (errno != ENOENT || missing_args == 0) {
2231 /* This is a transfer error, but inhibit deletion
2232 * only if we might be omitting an existing file. */
2233 if (errno != ENOENT)
2234 io_error |= IOERR_GENERAL;
2235 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2238 } else if (missing_args == 1) {
2239 /* Just ignore the arg. */
2241 } else /* (missing_args == 2) */ {
2242 /* Send the arg as a "missing" entry with
2243 * mode 0, which tells the generator to delete it. */
2244 memset(&st, 0, sizeof st);
2248 /* A dot-dir should not be excluded! */
2249 if (name_type != DOTDIR_NAME && st.st_mode != 0
2250 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2253 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2254 rprintf(FINFO, "skipping directory %s\n", fbuf);
2258 if (inc_recurse && relative_paths && *fbuf) {
2259 if ((p = strchr(fbuf+1, '/')) != NULL) {
2260 if (p - fbuf == 1 && *fbuf == '.') {
2261 if ((fn = strchr(p+1, '/')) != NULL)
2265 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2269 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2270 /* Send the implied directories at the start of the
2271 * source spec, so we get their permissions right. */
2272 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2275 if (one_file_system)
2276 filesystem_dev = st.st_dev;
2278 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2279 struct file_struct *file;
2280 file = send_file_name(f, flist, fbuf, &st,
2281 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2286 if (name_type == DOTDIR_NAME) {
2287 if (send_dir_depth < 0) {
2289 change_local_filter_dir(fbuf, len, send_dir_depth);
2291 send_directory(f, flist, fbuf, len, flags);
2294 send_if_directory(f, flist, file, fbuf, len, flags);
2296 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2299 gettimeofday(&end_tv, NULL);
2300 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2301 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2302 if (stats.flist_buildtime == 0)
2303 stats.flist_buildtime = 1;
2306 /* Indicate end of file list */
2307 if (protocol_version < 31 || io_error == 0 || ignore_errors)
2310 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2311 write_varint(f, io_error);
2314 #ifdef SUPPORT_HARD_LINKS
2315 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2319 if (show_filelist_p())
2320 finish_filelist_progress(flist);
2322 gettimeofday(&end_tv, NULL);
2323 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2324 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2326 /* When converting names, both sides keep an unsorted file-list array
2327 * because the names will differ on the sending and receiving sides
2328 * (both sides will use the unsorted index number for each item). */
2330 /* Sort the list without removing any duplicates. This allows the
2331 * receiving side to ask for whatever name it kept. For incremental
2332 * recursion mode, the sender marks duplicate dirs so that it can
2333 * send them together in a single file-list. */
2334 if (need_unsorted_flist) {
2335 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2336 out_of_memory("send_file_list");
2337 memcpy(flist->sorted, flist->files,
2338 flist->used * sizeof (struct file_struct*));
2340 flist->sorted = flist->files;
2341 flist_sort_and_clean(flist, 0);
2342 file_total += flist->used;
2344 if (numeric_ids <= 0 && !inc_recurse)
2349 /* send the io_error flag */
2350 if (protocol_version < 30)
2351 write_int(f, ignore_errors ? 0 : io_error);
2352 else if (io_error && protocol_version == 30 && !ignore_errors)
2353 send_msg_int(MSG_IO_ERROR, io_error);
2355 if (disable_buffering)
2356 io_end_buffering_out();
2358 stats.flist_size = stats.total_written - start_write;
2359 stats.num_files = flist->used;
2361 if (DEBUG_GTE(FLIST, 3))
2362 output_flist(flist);
2364 if (DEBUG_GTE(FLIST, 2))
2365 rprintf(FINFO, "send_file_list done\n");
2369 add_dirs_to_tree(-1, flist, stats.num_dirs);
2370 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2371 flist->parent_ndx = -1;
2372 flist_done_allocating(flist);
2373 if (send_dir_ndx < 0) {
2374 write_ndx(f, NDX_FLIST_EOF);
2377 else if (file_total == 1) {
2378 /* If we're creating incremental file-lists and there
2379 * was just 1 item in the first file-list, send 1 more
2380 * file-list to check if this is a 1-file xfer. */
2381 send_extra_file_list(f, 1);
2389 struct file_list *recv_file_list(int f)
2391 struct file_list *flist;
2396 if (show_filelist_p())
2397 start_filelist_progress("receiving file list");
2398 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2399 rprintf(FCLIENT, "receiving incremental file list\n");
2400 rprintf(FLOG, "receiving file list\n");
2402 parse_name_map(usermap, True);
2404 parse_name_map(groupmap, False);
2407 start_read = stats.total_read;
2409 #ifdef SUPPORT_HARD_LINKS
2410 if (preserve_hard_links && !first_flist)
2414 flist = flist_new(0, "recv_file_list");
2417 if (flist->ndx_start == 1)
2418 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2419 dstart = dir_flist->used;
2425 while ((flags = read_byte(f)) != 0) {
2426 struct file_struct *file;
2428 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2429 flags |= read_byte(f) << 8;
2431 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2433 if (protocol_version < 31) {
2434 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2435 exit_cleanup(RERR_PROTOCOL);
2437 err = read_varint(f);
2443 flist_expand(flist, 1);
2444 file = recv_file_entry(flist, flags, f);
2446 if (S_ISREG(file->mode)) {
2447 /* Already counted */
2448 } else if (S_ISDIR(file->mode)) {
2450 flist_expand(dir_flist, 1);
2451 dir_flist->files[dir_flist->used++] = file;
2454 } else if (S_ISLNK(file->mode))
2455 stats.num_symlinks++;
2456 else if (IS_DEVICE(file->mode))
2457 stats.num_symlinks++;
2459 stats.num_specials++;
2461 flist->files[flist->used++] = file;
2463 maybe_emit_filelist_progress(flist->used);
2465 if (DEBUG_GTE(FLIST, 2)) {
2466 char *name = f_name(file, NULL);
2467 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2470 file_total += flist->used;
2472 if (DEBUG_GTE(FLIST, 2))
2473 rprintf(FINFO, "received %d names\n", flist->used);
2475 if (show_filelist_p())
2476 finish_filelist_progress(flist);
2478 if (need_unsorted_flist) {
2479 /* Create an extra array of index pointers that we can sort for
2480 * the generator's use (for wading through the files in sorted
2481 * order and for calling flist_find()). We keep the "files"
2482 * list unsorted for our exchange of index numbers with the
2483 * other side (since their names may not sort the same). */
2484 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2485 out_of_memory("recv_file_list");
2486 memcpy(flist->sorted, flist->files,
2487 flist->used * sizeof (struct file_struct*));
2488 if (inc_recurse && dir_flist->used > dstart) {
2489 static int dir_flist_malloced = 0;
2490 if (dir_flist_malloced < dir_flist->malloced) {
2491 dir_flist->sorted = realloc_array(dir_flist->sorted,
2492 struct file_struct *,
2493 dir_flist->malloced);
2494 dir_flist_malloced = dir_flist->malloced;
2496 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2497 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2498 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2501 flist->sorted = flist->files;
2502 if (inc_recurse && dir_flist->used > dstart) {
2503 dir_flist->sorted = dir_flist->files;
2504 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2509 flist_done_allocating(flist);
2511 recv_id_list(f, flist);
2515 flist_sort_and_clean(flist, relative_paths);
2517 if (protocol_version < 30) {
2518 /* Recv the io_error flag */
2519 int err = read_int(f);
2522 } else if (inc_recurse && flist->ndx_start == 1) {
2523 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2524 flist->parent_ndx = -1;
2527 if (DEBUG_GTE(FLIST, 3))
2528 output_flist(flist);
2530 if (DEBUG_GTE(FLIST, 2))
2531 rprintf(FINFO, "recv_file_list done\n");
2533 stats.flist_size += stats.total_read - start_read;
2534 stats.num_files += flist->used;
2539 /* This is only used once by the receiver if the very first file-list
2540 * has exactly one item in it. */
2541 void recv_additional_file_list(int f)
2543 struct file_list *flist;
2544 int ndx = read_ndx(f);
2545 if (ndx == NDX_FLIST_EOF) {
2547 change_local_filter_dir(NULL, 0, 0);
2549 ndx = NDX_FLIST_OFFSET - ndx;
2550 if (ndx < 0 || ndx >= dir_flist->used) {
2551 ndx = NDX_FLIST_OFFSET - ndx;
2553 "[%s] Invalid dir index: %d (%d - %d)\n",
2554 who_am_i(), ndx, NDX_FLIST_OFFSET,
2555 NDX_FLIST_OFFSET - dir_flist->used + 1);
2556 exit_cleanup(RERR_PROTOCOL);
2558 if (DEBUG_GTE(FLIST, 3)) {
2559 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2562 flist = recv_file_list(f);
2563 flist->parent_ndx = ndx;
2567 /* Search for an identically-named item in the file list. Note that the
2568 * items must agree in their directory-ness, or no match is returned. */
2569 int flist_find(struct file_list *flist, struct file_struct *f)
2571 int low = flist->low, high = flist->high;
2572 int diff, mid, mid_up;
2574 while (low <= high) {
2575 mid = (low + high) / 2;
2576 if (F_IS_ACTIVE(flist->sorted[mid]))
2579 /* Scan for the next non-empty entry using the cached
2580 * distance values. If the value isn't fully up-to-
2581 * date, update it. */
2582 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2583 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2585 mid_up += F_DEPTH(flist->sorted[mid_up]);
2586 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2587 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2589 if (mid_up > high) {
2590 /* If there's nothing left above us, set high to
2591 * a non-empty entry below us and continue. */
2592 high = mid - (int)flist->sorted[mid]->len32;
2593 if (!F_IS_ACTIVE(flist->sorted[high])) {
2595 high -= (int)flist->sorted[high]->len32;
2596 } while (!F_IS_ACTIVE(flist->sorted[high]));
2597 flist->sorted[mid]->len32 = mid - high;
2602 diff = f_name_cmp(flist->sorted[mid_up], f);
2604 if (protocol_version < 29
2605 && S_ISDIR(flist->sorted[mid_up]->mode)
2606 != S_ISDIR(f->mode))
2618 /* Search for an identically-named item in the file list. Differs from
2619 * flist_find in that an item that agrees with "f" in directory-ness is
2620 * preferred but one that does not is still found. */
2621 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2626 /* First look for an item that agrees in directory-ness. */
2627 ndx = flist_find(flist, f);
2631 /* Temporarily flip f->mode to look for an item of opposite
2632 * directory-ness. */
2633 save_mode = f->mode;
2634 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2635 ndx = flist_find(flist, f);
2636 f->mode = save_mode;
2641 * Free up any resources a file_struct has allocated
2642 * and clear the file.
2644 void clear_file(struct file_struct *file)
2646 /* The +1 zeros out the first char of the basename. */
2647 memset(file, 0, FILE_STRUCT_LEN + 1);
2648 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2649 * entry. Likewise for len32 in the opposite direction. We assume
2650 * that we're alone for now since flist_find() will adjust the counts
2651 * it runs into that aren't up-to-date. */
2652 file->len32 = F_DEPTH(file) = 1;
2655 /* Allocate a new file list. */
2656 struct file_list *flist_new(int flags, char *msg)
2658 struct file_list *flist;
2660 if (!(flist = new0(struct file_list)))
2663 if (flags & FLIST_TEMP) {
2664 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2669 /* This is a doubly linked list with prev looping back to
2670 * the end of the list, but the last next pointer is NULL. */
2672 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2675 if (!flist->file_pool)
2678 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2680 first_flist = cur_flist = flist->prev = flist;
2682 struct file_list *prev = first_flist->prev;
2684 flist->file_pool = first_flist->file_pool;
2686 flist->ndx_start = prev->ndx_start + prev->used + 1;
2687 flist->flist_num = prev->flist_num + 1;
2690 prev->next = first_flist->prev = flist;
2692 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2699 /* Free up all elements in a flist. */
2700 void flist_free(struct file_list *flist)
2703 /* Was FLIST_TEMP dir-list. */
2704 } else if (flist == flist->prev) {
2705 first_flist = cur_flist = NULL;
2709 if (flist == cur_flist)
2710 cur_flist = flist->next;
2711 if (flist == first_flist)
2712 first_flist = first_flist->next;
2714 flist->prev->next = flist->next;
2716 flist->next = first_flist;
2718 flist->next->prev = flist->prev;
2719 file_total -= flist->used;
2723 if (!flist->prev || !flist_cnt)
2724 pool_destroy(flist->file_pool);
2726 pool_free_old(flist->file_pool, flist->pool_boundary);
2728 if (flist->sorted && flist->sorted != flist->files)
2729 free(flist->sorted);
2734 /* This routine ensures we don't have any duplicate names in our file list.
2735 * duplicate names can cause corruption because of the pipelining. */
2736 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2738 char fbuf[MAXPATHLEN];
2743 if (flist->used == 0) {
2749 fsort(flist->sorted, flist->used);
2751 if (!am_sender || inc_recurse) {
2752 for (i = prev_i = 0; i < flist->used; i++) {
2753 if (F_IS_ACTIVE(flist->sorted[i])) {
2758 flist->low = prev_i;
2760 i = prev_i = flist->used - 1;
2764 while (++i < flist->used) {
2766 struct file_struct *file = flist->sorted[i];
2768 if (!F_IS_ACTIVE(file))
2770 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2772 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2773 int save_mode = file->mode;
2774 /* Make sure that this directory doesn't duplicate a
2775 * non-directory earlier in the list. */
2776 flist->high = prev_i;
2777 file->mode = S_IFREG;
2778 j = flist_find(flist, file);
2779 file->mode = save_mode;
2784 /* If one is a dir and the other is not, we want to
2785 * keep the dir because it might have contents in the
2786 * list. Otherwise keep the first one. */
2787 if (S_ISDIR(file->mode)) {
2788 struct file_struct *fp = flist->sorted[j];
2789 if (!S_ISDIR(fp->mode))
2793 file->flags |= FLAG_DUPLICATE;
2794 else { /* Make sure we merge our vital flags. */
2795 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2796 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2804 if (DEBUG_GTE(DUP, 1)) {
2806 "removing duplicate name %s from file list (%d)\n",
2807 f_name(file, fbuf), drop + flist->ndx_start);
2809 clear_file(flist->sorted[drop]);
2813 if (flist->low == drop) {
2815 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2824 flist->high = prev_i;
2827 /* We need to strip off the leading slashes for relative
2828 * paths, but this must be done _after_ the sorting phase. */
2829 for (i = flist->low; i <= flist->high; i++) {
2830 struct file_struct *file = flist->sorted[i];
2834 while (*file->dirname == '/')
2836 if (!*file->dirname)
2837 file->dirname = NULL;
2841 if (prune_empty_dirs && !am_sender) {
2842 int j, prev_depth = 0;
2844 prev_i = 0; /* It's OK that this isn't really true. */
2846 for (i = flist->low; i <= flist->high; i++) {
2847 struct file_struct *fp, *file = flist->sorted[i];
2849 /* This temporarily abuses the F_DEPTH() value for a
2850 * directory that is in a chain that might get pruned.
2851 * We restore the old value if it gets a reprieve. */
2852 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2853 /* Dump empty dirs when coming back down. */
2854 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2855 fp = flist->sorted[prev_i];
2856 if (F_DEPTH(fp) >= 0)
2858 prev_i = -F_DEPTH(fp)-1;
2861 prev_depth = F_DEPTH(file);
2862 if (is_excluded(f_name(file, fbuf), 1,
2864 /* Keep dirs through this dir. */
2865 for (j = prev_depth-1; ; j--) {
2866 fp = flist->sorted[prev_i];
2867 if (F_DEPTH(fp) >= 0)
2869 prev_i = -F_DEPTH(fp)-1;
2873 F_DEPTH(file) = -prev_i-1;
2876 /* Keep dirs through this non-dir. */
2877 for (j = prev_depth; ; j--) {
2878 fp = flist->sorted[prev_i];
2879 if (F_DEPTH(fp) >= 0)
2881 prev_i = -F_DEPTH(fp)-1;
2886 /* Dump all remaining empty dirs. */
2888 struct file_struct *fp = flist->sorted[prev_i];
2889 if (F_DEPTH(fp) >= 0)
2891 prev_i = -F_DEPTH(fp)-1;
2895 for (i = flist->low; i <= flist->high; i++) {
2896 if (F_IS_ACTIVE(flist->sorted[i]))
2900 for (i = flist->high; i >= flist->low; i--) {
2901 if (F_IS_ACTIVE(flist->sorted[i]))
2908 static void output_flist(struct file_list *flist)
2910 char uidbuf[16], gidbuf[16], depthbuf[16];
2911 struct file_struct *file;
2912 const char *root, *dir, *slash, *name, *trail;
2913 const char *who = who_am_i();
2916 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2917 who, flist->ndx_start, flist->used, flist->low, flist->high);
2918 for (i = 0; i < flist->used; i++) {
2919 file = flist->files[i];
2920 if ((am_root || am_sender) && uid_ndx) {
2921 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2926 static char parens[] = "(\0)\0\0\0";
2927 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2928 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2929 pp, F_GROUP(file), pp + 2);
2933 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2934 if (F_IS_ACTIVE(file)) {
2935 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2936 if ((dir = file->dirname) == NULL)
2940 name = file->basename;
2941 trail = S_ISDIR(file->mode) ? "/" : "";
2943 root = dir = slash = name = trail = "";
2945 "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2946 who, i + flist->ndx_start,
2947 root, dir, slash, name, trail,
2948 (int)file->mode, comma_num(F_LENGTH(file)),
2949 uidbuf, gidbuf, file->flags);
2953 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2954 enum fnc_type { t_PATH, t_ITEM };
2956 static int found_prefix;
2958 /* Compare the names of two file_struct entities, similar to how strcmp()
2959 * would do if it were operating on the joined strings.
2961 * Some differences beginning with protocol_version 29: (1) directory names
2962 * are compared with an assumed trailing slash so that they compare in a
2963 * way that would cause them to sort immediately prior to any content they
2964 * may have; (2) a directory of any name compares after a non-directory of
2965 * any name at the same depth; (3) a directory with name "." compares prior
2966 * to anything else. These changes mean that a directory and a non-dir
2967 * with the same name will not compare as equal (protocol_version >= 29).
2969 * The dirname component can be an empty string, but the basename component
2970 * cannot (and never is in the current codebase). The basename component
2971 * may be NULL (for a removed item), in which case it is considered to be
2972 * after any existing item. */
2973 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2976 const uchar *c1, *c2;
2977 enum fnc_state state1, state2;
2978 enum fnc_type type1, type2;
2979 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2981 if (!f1 || !F_IS_ACTIVE(f1)) {
2982 if (!f2 || !F_IS_ACTIVE(f2))
2986 if (!f2 || !F_IS_ACTIVE(f2))
2989 c1 = (uchar*)f1->dirname;
2990 c2 = (uchar*)f2->dirname;
2994 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
2995 c1 = (const uchar*)f1->basename;
2996 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
2998 state1 = s_TRAILING;
3007 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3008 c2 = (const uchar*)f2->basename;
3009 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3011 state2 = s_TRAILING;
3021 return type1 == t_PATH ? 1 : -1;
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;
3041 state1 = s_TRAILING;
3042 if (type1 == t_PATH) {
3051 if (*c2 && type1 != type2)
3052 return type1 == t_PATH ? 1 : -1;
3061 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3062 c2 = (const uchar*)f2->basename;
3063 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3065 state2 = s_TRAILING;
3071 state2 = s_TRAILING;
3072 if (type2 == t_PATH) {
3085 return type1 == t_PATH ? 1 : -1;
3087 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3092 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3093 * not match if f2's basename is not an exact match of a path element in f1.
3094 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3095 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3099 return found_prefix;
3102 char *f_name_buf(void)
3104 static char names[5][MAXPATHLEN];
3105 static unsigned int n;
3107 n = (n + 1) % (sizeof names / sizeof names[0]);
3112 /* Return a copy of the full filename of a flist entry, using the indicated
3113 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3114 * done because we checked the size when creating the file_struct entry.
3116 char *f_name(const struct file_struct *f, char *fbuf)
3118 if (!f || !F_IS_ACTIVE(f))
3122 fbuf = f_name_buf();
3125 int len = strlen(f->dirname);
3126 memcpy(fbuf, f->dirname, len);
3128 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3130 strlcpy(fbuf, f->basename, MAXPATHLEN);
3135 /* Do a non-recursive scan of the named directory, possibly ignoring all
3136 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3137 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3138 * buffer (the functions we call will append names onto the end, but the old
3139 * dir value will be restored on exit). */
3140 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
3142 struct file_list *dirlist;
3143 char dirbuf[MAXPATHLEN];
3144 int save_recurse = recurse;
3145 int save_xfer_dirs = xfer_dirs;
3146 int save_prune_empty_dirs = prune_empty_dirs;
3149 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3150 if (dlen >= MAXPATHLEN)
3155 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3159 send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
3160 xfer_dirs = save_xfer_dirs;
3161 recurse = save_recurse;
3162 if (INFO_GTE(PROGRESS, 1))
3163 flist_count_offset += dirlist->used;
3165 prune_empty_dirs = 0;
3166 dirlist->sorted = dirlist->files;
3167 flist_sort_and_clean(dirlist, 0);
3168 prune_empty_dirs = save_prune_empty_dirs;
3170 if (DEBUG_GTE(FLIST, 3))
3171 output_flist(dirlist);