2 * Generate and receive file lists.
4 * Copyright (C) 1996 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2001, 2002 Martin Pool <mbp@samba.org>
7 * Copyright (C) 2002-2009 Wayne Davison
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 3 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License along
20 * with this program; if not, visit the http://fsf.org website.
33 extern int am_generator;
34 extern int inc_recurse;
35 extern int always_checksum;
37 extern int ignore_errors;
38 extern int numeric_ids;
42 extern int filesfrom_fd;
43 extern int one_file_system;
44 extern int copy_dirlinks;
45 extern int preserve_uid;
46 extern int preserve_gid;
47 extern int preserve_acls;
48 extern int preserve_xattrs;
49 extern int preserve_links;
50 extern int preserve_hard_links;
51 extern int preserve_devices;
52 extern int preserve_specials;
53 extern int missing_args;
57 extern int relative_paths;
58 extern int implied_dirs;
59 extern int file_extra_cnt;
60 extern int ignore_perishable;
61 extern int non_perishable_cnt;
62 extern int prune_empty_dirs;
63 extern int copy_links;
64 extern int copy_unsafe_links;
65 extern int protocol_version;
66 extern int sanitize_paths;
67 extern int munge_symlinks;
68 extern int need_unsorted_flist;
69 extern int sender_symlink_iconv;
70 extern int output_needs_newline;
71 extern int sender_keeps_checksum;
72 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;
90 #ifdef HAVE_STRUCT_STAT_ST_MTIM_TV_NSEC
91 #define ST_MTIME_NSEC st_mtim.tv_nsec
92 #elif defined(HAVE_STRUCT_STAT_ST_MTIMENSEC)
93 #define ST_MTIME_NSEC st_mtimensec
97 #define PTR_SIZE (sizeof (struct file_struct *))
101 dev_t filesystem_dev; /* used to implement -x */
103 struct file_list *cur_flist, *first_flist, *dir_flist;
104 int send_dir_ndx = -1, send_dir_depth = -1;
105 int flist_cnt = 0; /* how many (non-tmp) file list objects exist */
106 int file_total = 0; /* total of all active items over all file-lists */
107 int file_old_total = 0; /* total of active items that will soon be gone */
108 int flist_eof = 0; /* all the file-lists are now known */
110 #define NORMAL_NAME 0
111 #define SLASH_ENDING_NAME 1
112 #define DOTDIR_NAME 2
114 /* Starting from protocol version 26, we always use 64-bit ino_t and dev_t
115 * internally, even if this platform does not allow files to have 64-bit inums.
116 * The only exception is if we're on a platform with no 64-bit type at all.
118 * Because we use read_longint() to get these off the wire, if you transfer
119 * devices or (for protocols < 30) hardlinks with dev or inum > 2**32 to a
120 * machine with no 64-bit types then you will get an overflow error.
122 * Note that if you transfer devices from a 64-bit-devt machine (say, Solaris)
123 * to a 32-bit-devt machine (say, Linux-2.2/x86) then the device numbers will
124 * be truncated. But it's a kind of silly thing to do anyhow. */
126 /* The tmp_* vars are used as a cache area by make_file() to store data
127 * that the sender doesn't need to remember in its file list. The data
128 * will survive just long enough to be used by send_file_entry(). */
129 static dev_t tmp_rdev;
130 #ifdef SUPPORT_HARD_LINKS
131 static int64 tmp_dev, tmp_ino;
133 static char tmp_sum[MAX_DIGEST_LEN];
135 static char empty_sum[MAX_DIGEST_LEN];
136 static int flist_count_offset; /* for --delete --progress */
138 static void flist_sort_and_clean(struct file_list *flist, int strip_root);
139 static void output_flist(struct file_list *flist);
141 void init_flist(void)
143 if (DEBUG_GTE(FLIST, 4)) {
144 rprintf(FINFO, "FILE_STRUCT_LEN=%d, EXTRA_LEN=%d\n",
145 (int)FILE_STRUCT_LEN, (int)EXTRA_LEN);
147 checksum_len = protocol_version < 21 ? 2
148 : protocol_version < 30 ? MD4_DIGEST_LEN
152 static int show_filelist_p(void)
154 return INFO_GTE(FLIST, 1) && xfer_dirs && !am_server && !inc_recurse;
157 static void start_filelist_progress(char *kind)
159 rprintf(FCLIENT, "%s ... ", kind);
160 output_needs_newline = 1;
164 static void emit_filelist_progress(int count)
166 rprintf(FCLIENT, " %d files...\r", count);
169 static void maybe_emit_filelist_progress(int count)
171 if (INFO_GTE(FLIST, 2) && show_filelist_p() && (count % 100) == 0)
172 emit_filelist_progress(count);
175 static void finish_filelist_progress(const struct file_list *flist)
177 if (INFO_GTE(FLIST, 2)) {
178 /* This overwrites the progress line */
179 rprintf(FINFO, "%d file%sto consider\n",
180 flist->used, flist->used == 1 ? " " : "s ");
182 output_needs_newline = 0;
183 rprintf(FINFO, "done\n");
187 void show_flist_stats(void)
192 /* Stat either a symlink or its referent, depending on the settings of
193 * copy_links, copy_unsafe_links, etc. Returns -1 on error, 0 on success.
195 * If path is the name of a symlink, then the linkbuf buffer (which must hold
196 * MAXPATHLEN chars) will be set to the symlink's target string.
198 * The stat structure pointed to by stp will contain information about the
199 * link or the referent as appropriate, if they exist. */
200 static int readlink_stat(const char *path, STRUCT_STAT *stp, char *linkbuf)
203 if (link_stat(path, stp, copy_dirlinks) < 0)
205 if (S_ISLNK(stp->st_mode)) {
206 int llen = do_readlink(path, linkbuf, MAXPATHLEN - 1);
209 linkbuf[llen] = '\0';
210 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
211 if (INFO_GTE(SYMSAFE, 1)) {
212 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
215 return x_stat(path, stp, NULL);
217 if (munge_symlinks && am_sender && llen > SYMLINK_PREFIX_LEN
218 && strncmp(linkbuf, SYMLINK_PREFIX, SYMLINK_PREFIX_LEN) == 0) {
219 memmove(linkbuf, linkbuf + SYMLINK_PREFIX_LEN,
220 llen - SYMLINK_PREFIX_LEN + 1);
225 return x_stat(path, stp, NULL);
229 int link_stat(const char *path, STRUCT_STAT *stp, int follow_dirlinks)
233 return x_stat(path, stp, NULL);
234 if (x_lstat(path, stp, NULL) < 0)
236 if (follow_dirlinks && S_ISLNK(stp->st_mode)) {
238 if (x_stat(path, &st, NULL) == 0 && S_ISDIR(st.st_mode))
243 return x_stat(path, stp, NULL);
247 static inline int is_daemon_excluded(const char *fname, int is_dir)
249 if (daemon_filter_list.head
250 && check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
257 static inline int path_is_daemon_excluded(char *path, int ignore_filename)
259 if (daemon_filter_list.head) {
262 while ((slash = strchr(slash+1, '/')) != NULL) {
265 ret = check_filter(&daemon_filter_list, FLOG, path, 1);
274 && check_filter(&daemon_filter_list, FLOG, path, 1) < 0) {
283 /* This function is used to check if a file should be included/excluded
284 * from the list of files based on its name and type etc. The value of
285 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
286 static int is_excluded(const char *fname, int is_dir, int filter_level)
288 #if 0 /* This currently never happens, so avoid a useless compare. */
289 if (filter_level == NO_FILTERS)
292 if (is_daemon_excluded(fname, is_dir))
294 if (filter_level != ALL_FILTERS)
297 && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
302 static void send_directory(int f, struct file_list *flist,
303 char *fbuf, int len, int flags);
305 static const char *pathname, *orig_dir;
306 static int pathname_len;
308 /* Make sure flist can hold at least flist->used + extra entries. */
309 static void flist_expand(struct file_list *flist, int extra)
311 struct file_struct **new_ptr;
313 if (flist->used + extra <= flist->malloced)
316 if (flist->malloced < FLIST_START)
317 flist->malloced = FLIST_START;
318 else if (flist->malloced >= FLIST_LINEAR)
319 flist->malloced += FLIST_LINEAR;
321 flist->malloced *= 2;
323 /* In case count jumped or we are starting the list
324 * with a known size just set it. */
325 if (flist->malloced < flist->used + extra)
326 flist->malloced = flist->used + extra;
328 new_ptr = realloc_array(flist->files, struct file_struct *,
331 if (DEBUG_GTE(FLIST, 1) && flist->malloced != FLIST_START) {
332 rprintf(FCLIENT, "[%s] expand file_list pointer array to %s bytes, did%s move\n",
334 big_num(sizeof flist->files[0] * flist->malloced),
335 (new_ptr == flist->files) ? " not" : "");
338 flist->files = new_ptr;
341 out_of_memory("flist_expand");
344 static void flist_done_allocating(struct file_list *flist)
346 void *ptr = pool_boundary(flist->file_pool, 8*1024);
347 if (flist->pool_boundary == ptr)
348 flist->pool_boundary = NULL; /* list didn't use any pool memory */
350 flist->pool_boundary = ptr;
353 /* Call this with EITHER (1) "file, NULL, 0" to chdir() to the file's
354 * F_PATHNAME(), or (2) "NULL, dir, dirlen" to chdir() to the supplied dir,
355 * with dir == NULL taken to be the starting directory, and dirlen < 0
356 * indicating that strdup(dir) should be called and then the -dirlen length
357 * value checked to ensure that it is not daemon-excluded. */
358 int change_pathname(struct file_struct *file, const char *dir, int dirlen)
361 char *cpy = strdup(dir);
363 change_dir(orig_dir, CD_SKIP_CHDIR);
364 if (path_is_daemon_excluded(cpy, 0))
370 if (pathname == F_PATHNAME(file))
372 dir = F_PATHNAME(file);
374 dirlen = strlen(dir);
375 } else if (pathname == dir)
377 if (dir && *dir != '/')
378 change_dir(orig_dir, CD_SKIP_CHDIR);
382 pathname_len = dirlen;
387 if (!change_dir(dir, CD_NORMAL)) {
389 io_error |= IOERR_GENERAL;
390 rsyserr(FERROR_XFER, errno, "change_dir %s failed", full_fname(dir));
392 change_dir(orig_dir, CD_NORMAL);
401 static void send_file_entry(int f, const char *fname, struct file_struct *file,
403 const char *symlink_name, int symlink_len,
405 int ndx, int first_ndx)
407 static time_t modtime;
409 #ifdef SUPPORT_HARD_LINKS
413 static uint32 rdev_major;
416 static const char *user_name, *group_name;
417 static char lastname[MAXPATHLEN];
418 #ifdef SUPPORT_HARD_LINKS
419 int first_hlink_ndx = -1;
424 /* Initialize starting value of xflags and adjust counts. */
425 if (S_ISREG(file->mode))
427 else if (S_ISDIR(file->mode)) {
429 if (protocol_version >= 30) {
430 if (file->flags & FLAG_CONTENT_DIR)
431 xflags = file->flags & FLAG_TOP_DIR;
432 else if (file->flags & FLAG_IMPLIED_DIR)
433 xflags = XMIT_TOP_DIR | XMIT_NO_CONTENT_DIR;
435 xflags = XMIT_NO_CONTENT_DIR;
437 xflags = file->flags & FLAG_TOP_DIR; /* FLAG_TOP_DIR == XMIT_TOP_DIR */
439 if (S_ISLNK(file->mode))
440 stats.num_symlinks++;
441 else if (IS_DEVICE(file->mode))
443 else if (IS_SPECIAL(file->mode))
444 stats.num_specials++;
448 if (file->mode == mode)
449 xflags |= XMIT_SAME_MODE;
453 if (preserve_devices && IS_DEVICE(mode)) {
454 if (protocol_version < 28) {
455 if (tmp_rdev == rdev)
456 xflags |= XMIT_SAME_RDEV_pre28;
461 if ((uint32)major(rdev) == rdev_major)
462 xflags |= XMIT_SAME_RDEV_MAJOR;
464 rdev_major = major(rdev);
465 if (protocol_version < 30 && (uint32)minor(rdev) <= 0xFFu)
466 xflags |= XMIT_RDEV_MINOR_8_pre30;
468 } else if (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31) {
469 /* Special files don't need an rdev number, so just make
470 * the historical transmission of the value efficient. */
471 if (protocol_version < 28)
472 xflags |= XMIT_SAME_RDEV_pre28;
474 rdev = MAKEDEV(major(rdev), 0);
475 xflags |= XMIT_SAME_RDEV_MAJOR;
476 if (protocol_version < 30)
477 xflags |= XMIT_RDEV_MINOR_8_pre30;
479 } else if (protocol_version < 28)
480 rdev = MAKEDEV(0, 0);
481 if (!preserve_uid || ((uid_t)F_OWNER(file) == uid && *lastname))
482 xflags |= XMIT_SAME_UID;
486 user_name = add_uid(uid);
487 if (inc_recurse && user_name)
488 xflags |= XMIT_USER_NAME_FOLLOWS;
491 if (!preserve_gid || ((gid_t)F_GROUP(file) == gid && *lastname))
492 xflags |= XMIT_SAME_GID;
496 group_name = add_gid(gid);
497 if (inc_recurse && group_name)
498 xflags |= XMIT_GROUP_NAME_FOLLOWS;
501 if (file->modtime == modtime)
502 xflags |= XMIT_SAME_TIME;
504 modtime = file->modtime;
505 if (NSEC_BUMP(file) && protocol_version >= 31)
506 xflags |= XMIT_MOD_NSEC;
508 #ifdef SUPPORT_HARD_LINKS
510 if (protocol_version >= 30) {
511 struct ht_int64_node *np = idev_find(tmp_dev, tmp_ino);
512 first_hlink_ndx = (int32)(long)np->data - 1;
513 if (first_hlink_ndx < 0) {
514 np->data = (void*)(long)(first_ndx + ndx + 1);
515 xflags |= XMIT_HLINK_FIRST;
517 if (DEBUG_GTE(HLINK, 1)) {
518 if (first_hlink_ndx >= 0) {
519 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
520 who_am_i(), first_ndx + ndx, first_hlink_ndx,
521 first_hlink_ndx >= first_ndx ? "" : "un");
522 } else if (DEBUG_GTE(HLINK, 3)) {
523 rprintf(FINFO, "[%s] dev:inode for #%d is %s:%s\n",
524 who_am_i(), first_ndx + ndx,
525 big_num(tmp_dev), big_num(tmp_ino));
529 if (tmp_dev == dev) {
530 if (protocol_version >= 28)
531 xflags |= XMIT_SAME_DEV_pre30;
535 xflags |= XMIT_HLINKED;
540 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
542 l2 = strlen(fname+l1);
545 xflags |= XMIT_SAME_NAME;
547 xflags |= XMIT_LONG_NAME;
549 /* We must make sure we don't send a zero flag byte or the
550 * other end will terminate the flist transfer. Note that
551 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
552 * it's harmless way to add a bit to the first flag byte. */
553 if (protocol_version >= 28) {
554 if (!xflags && !S_ISDIR(mode))
555 xflags |= XMIT_TOP_DIR;
556 if ((xflags & 0xFF00) || !xflags) {
557 xflags |= XMIT_EXTENDED_FLAGS;
558 write_shortint(f, xflags);
560 write_byte(f, xflags);
562 if (!(xflags & 0xFF))
563 xflags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
564 write_byte(f, xflags);
566 if (xflags & XMIT_SAME_NAME)
568 if (xflags & XMIT_LONG_NAME)
569 write_varint30(f, l2);
572 write_buf(f, fname + l1, l2);
574 #ifdef SUPPORT_HARD_LINKS
575 if (first_hlink_ndx >= 0) {
576 write_varint(f, first_hlink_ndx);
577 if (first_hlink_ndx >= first_ndx)
582 write_varlong30(f, F_LENGTH(file), 3);
583 if (!(xflags & XMIT_SAME_TIME)) {
584 if (protocol_version >= 30)
585 write_varlong(f, modtime, 4);
587 write_int(f, modtime);
589 if (xflags & XMIT_MOD_NSEC)
590 write_varint(f, F_MOD_NSEC(file));
591 if (!(xflags & XMIT_SAME_MODE))
592 write_int(f, to_wire_mode(mode));
593 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
594 if (protocol_version < 30)
597 write_varint(f, uid);
598 if (xflags & XMIT_USER_NAME_FOLLOWS) {
599 int len = strlen(user_name);
601 write_buf(f, user_name, len);
605 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
606 if (protocol_version < 30)
609 write_varint(f, gid);
610 if (xflags & XMIT_GROUP_NAME_FOLLOWS) {
611 int len = strlen(group_name);
613 write_buf(f, group_name, len);
617 if ((preserve_devices && IS_DEVICE(mode))
618 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
619 if (protocol_version < 28) {
620 if (!(xflags & XMIT_SAME_RDEV_pre28))
621 write_int(f, (int)rdev);
623 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
624 write_varint30(f, major(rdev));
625 if (protocol_version >= 30)
626 write_varint(f, minor(rdev));
627 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
628 write_byte(f, minor(rdev));
630 write_int(f, minor(rdev));
636 write_varint30(f, symlink_len);
637 write_buf(f, symlink_name, symlink_len);
641 #ifdef SUPPORT_HARD_LINKS
642 if (tmp_dev != 0 && protocol_version < 30) {
643 if (protocol_version < 26) {
644 /* 32-bit dev_t and ino_t */
645 write_int(f, (int32)dev);
646 write_int(f, (int32)tmp_ino);
648 /* 64-bit dev_t and ino_t */
649 if (!(xflags & XMIT_SAME_DEV_pre30))
650 write_longint(f, dev);
651 write_longint(f, tmp_ino);
656 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
661 /* Prior to 28, we sent a useless set of nulls. */
664 write_buf(f, sum, checksum_len);
667 #ifdef SUPPORT_HARD_LINKS
670 strlcpy(lastname, fname, MAXPATHLEN);
672 if (S_ISREG(mode) || S_ISLNK(mode))
673 stats.total_size += F_LENGTH(file);
676 static struct file_struct *recv_file_entry(int f, struct file_list *flist, int xflags)
678 static int64 modtime;
680 #ifdef SUPPORT_HARD_LINKS
684 static uint32 rdev_major;
687 static uint16 gid_flags;
688 static char lastname[MAXPATHLEN], *lastdir;
689 static int lastdir_depth, lastdir_len = -1;
690 static unsigned int del_hier_name_len = 0;
691 static int in_del_hier = 0;
692 char thisname[MAXPATHLEN];
693 unsigned int l1 = 0, l2 = 0;
694 int alloc_len, basename_len, linkname_len;
695 int extra_len = file_extra_cnt * EXTRA_LEN;
696 int first_hlink_ndx = -1;
699 const char *basename;
700 struct file_struct *file;
704 if (xflags & XMIT_SAME_NAME)
707 if (xflags & XMIT_LONG_NAME)
708 l2 = read_varint30(f);
712 if (l2 >= MAXPATHLEN - l1) {
714 "overflow: xflags=0x%x l1=%d l2=%d lastname=%s [%s]\n",
715 xflags, l1, l2, lastname, who_am_i());
716 overflow_exit("recv_file_entry");
719 strlcpy(thisname, lastname, l1 + 1);
720 read_sbuf(f, &thisname[l1], l2);
721 thisname[l1 + l2] = 0;
723 /* Abuse basename_len for a moment... */
724 basename_len = strlcpy(lastname, thisname, MAXPATHLEN);
727 if (ic_recv != (iconv_t)-1) {
730 INIT_CONST_XBUF(outbuf, thisname);
731 INIT_XBUF(inbuf, lastname, basename_len, (size_t)-1);
733 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
734 io_error |= IOERR_GENERAL;
736 "[%s] cannot convert filename: %s (%s)\n",
737 who_am_i(), lastname, strerror(errno));
740 thisname[outbuf.len] = '\0';
745 clean_fname(thisname, 0);
748 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
750 if ((basename = strrchr(thisname, '/')) != NULL) {
751 int len = basename++ - thisname;
752 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
753 lastdir = new_array(char, len + 1);
754 memcpy(lastdir, thisname, len);
757 lastdir_depth = count_dir_elements(lastdir);
761 basename_len = strlen(basename) + 1; /* count the '\0' */
763 #ifdef SUPPORT_HARD_LINKS
764 if (protocol_version >= 30
765 && BITS_SETnUNSET(xflags, XMIT_HLINKED, XMIT_HLINK_FIRST)) {
766 first_hlink_ndx = read_varint(f);
767 if (first_hlink_ndx < 0 || first_hlink_ndx >= flist->ndx_start + flist->used) {
769 "hard-link reference out of range: %d (%d)\n",
770 first_hlink_ndx, flist->ndx_start + flist->used);
771 exit_cleanup(RERR_PROTOCOL);
773 if (DEBUG_GTE(HLINK, 1)) {
774 rprintf(FINFO, "[%s] #%d hard-links #%d (%sabbrev)\n",
775 who_am_i(), flist->used+flist->ndx_start, first_hlink_ndx,
776 first_hlink_ndx >= flist->ndx_start ? "" : "un");
778 if (first_hlink_ndx >= flist->ndx_start) {
779 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
780 file_length = F_LENGTH(first);
781 modtime = first->modtime;
782 modtime_nsec = F_MOD_NSEC(first);
785 uid = F_OWNER(first);
787 gid = F_GROUP(first);
788 if (preserve_devices && IS_DEVICE(mode)) {
789 uint32 *devp = F_RDEV_P(first);
790 rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
791 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
793 if (preserve_links && S_ISLNK(mode))
794 linkname_len = strlen(F_SYMLINK(first)) + 1;
802 file_length = read_varlong30(f, 3);
803 if (!(xflags & XMIT_SAME_TIME)) {
804 if (protocol_version >= 30) {
805 modtime = read_varlong(f, 4);
806 #if SIZEOF_TIME_T < SIZEOF_INT64
807 if (!am_generator && (int64)(time_t)modtime != modtime) {
809 "Time value of %s truncated on receiver.\n",
814 modtime = read_int(f);
816 if (xflags & XMIT_MOD_NSEC)
817 modtime_nsec = read_varint(f);
820 if (!(xflags & XMIT_SAME_MODE))
821 mode = from_wire_mode(read_int(f));
823 if (chmod_modes && !S_ISLNK(mode) && mode)
824 mode = tweak_mode(mode, chmod_modes);
826 if (preserve_uid && !(xflags & XMIT_SAME_UID)) {
827 if (protocol_version < 30)
828 uid = (uid_t)read_int(f);
830 uid = (uid_t)read_varint(f);
831 if (xflags & XMIT_USER_NAME_FOLLOWS)
832 uid = recv_user_name(f, uid);
833 else if (inc_recurse && am_root && (!numeric_ids || usermap))
834 uid = match_uid(uid);
837 if (preserve_gid && !(xflags & XMIT_SAME_GID)) {
838 if (protocol_version < 30)
839 gid = (gid_t)read_int(f);
841 gid = (gid_t)read_varint(f);
843 if (xflags & XMIT_GROUP_NAME_FOLLOWS)
844 gid = recv_group_name(f, gid, &gid_flags);
845 else if (inc_recurse && (!am_root || !numeric_ids || groupmap))
846 gid = match_gid(gid, &gid_flags);
850 if ((preserve_devices && IS_DEVICE(mode))
851 || (preserve_specials && IS_SPECIAL(mode) && protocol_version < 31)) {
852 if (protocol_version < 28) {
853 if (!(xflags & XMIT_SAME_RDEV_pre28))
854 rdev = (dev_t)read_int(f);
857 if (!(xflags & XMIT_SAME_RDEV_MAJOR))
858 rdev_major = read_varint30(f);
859 if (protocol_version >= 30)
860 rdev_minor = read_varint(f);
861 else if (xflags & XMIT_RDEV_MINOR_8_pre30)
862 rdev_minor = read_byte(f);
864 rdev_minor = read_int(f);
865 rdev = MAKEDEV(rdev_major, rdev_minor);
868 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
870 } else if (protocol_version < 28)
871 rdev = MAKEDEV(0, 0);
874 if (preserve_links && S_ISLNK(mode)) {
875 linkname_len = read_varint30(f) + 1; /* count the '\0' */
876 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
877 rprintf(FERROR, "overflow: linkname_len=%d\n",
879 overflow_exit("recv_file_entry");
882 /* We don't know how much extra room we need to convert
883 * the as-yet-unread symlink data, so let's hope that a
884 * double-size buffer is plenty. */
885 if (sender_symlink_iconv)
889 linkname_len += SYMLINK_PREFIX_LEN;
895 #ifdef SUPPORT_HARD_LINKS
897 if (preserve_hard_links) {
898 if (protocol_version < 28 && S_ISREG(mode))
899 xflags |= XMIT_HLINKED;
900 if (xflags & XMIT_HLINKED)
901 extra_len += (inc_recurse+1) * EXTRA_LEN;
906 /* Directories need an extra int32 for the default ACL. */
907 if (preserve_acls && S_ISDIR(mode))
908 extra_len += EXTRA_LEN;
911 if (always_checksum && S_ISREG(mode))
912 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
914 #if SIZEOF_INT64 >= 8
915 if (file_length > 0xFFFFFFFFu && S_ISREG(mode))
916 extra_len += EXTRA_LEN;
918 #ifdef HAVE_UTIMENSAT
920 extra_len += EXTRA_LEN;
922 if (file_length < 0) {
923 rprintf(FERROR, "Offset underflow: file-length is negative\n");
924 exit_cleanup(RERR_UNSUPPORTED);
927 if (inc_recurse && S_ISDIR(mode)) {
928 if (one_file_system) {
929 /* Room to save the dir's device for -x */
930 extra_len += DEV_EXTRA_CNT * EXTRA_LEN;
932 pool = dir_flist->file_pool;
934 pool = flist->file_pool;
936 #if EXTRA_ROUNDING > 0
937 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
938 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
941 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
943 bp = pool_alloc(pool, alloc_len, "recv_file_entry");
945 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
947 file = (struct file_struct *)bp;
948 bp += FILE_STRUCT_LEN;
950 memcpy(bp, basename, basename_len);
952 #ifdef SUPPORT_HARD_LINKS
953 if (xflags & XMIT_HLINKED)
954 file->flags |= FLAG_HLINKED;
956 file->modtime = (time_t)modtime;
957 #ifdef HAVE_UTIMENSAT
959 file->flags |= FLAG_MOD_NSEC;
960 OPT_EXTRA(file, 0)->unum = modtime_nsec;
963 file->len32 = (uint32)file_length;
964 #if SIZEOF_INT64 >= 8
965 if (file_length > 0xFFFFFFFFu && S_ISREG(mode)) {
966 #if SIZEOF_CAPITAL_OFF_T < 8
967 rprintf(FERROR, "Offset overflow: attempted 64-bit file-length\n");
968 exit_cleanup(RERR_UNSUPPORTED);
970 file->flags |= FLAG_LENGTH64;
971 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(file_length >> 32);
980 file->flags |= gid_flags;
983 F_NDX(file) = flist->used + flist->ndx_start;
985 if (basename != thisname) {
986 file->dirname = lastdir;
987 F_DEPTH(file) = lastdir_depth + 1;
992 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
994 if (protocol_version >= 30) {
995 if (!(xflags & XMIT_NO_CONTENT_DIR)) {
996 if (xflags & XMIT_TOP_DIR)
997 file->flags |= FLAG_TOP_DIR;
998 file->flags |= FLAG_CONTENT_DIR;
999 } else if (xflags & XMIT_TOP_DIR)
1000 file->flags |= FLAG_IMPLIED_DIR;
1001 } else if (xflags & XMIT_TOP_DIR) {
1002 in_del_hier = recurse;
1003 del_hier_name_len = F_DEPTH(file) == 0 ? 0 : l1 + l2;
1004 if (relative_paths && del_hier_name_len > 2
1005 && lastname[del_hier_name_len-1] == '.'
1006 && lastname[del_hier_name_len-2] == '/')
1007 del_hier_name_len -= 2;
1008 file->flags |= FLAG_TOP_DIR | FLAG_CONTENT_DIR;
1009 } else if (in_del_hier) {
1010 if (!relative_paths || !del_hier_name_len
1011 || (l1 >= del_hier_name_len
1012 && lastname[del_hier_name_len] == '/'))
1013 file->flags |= FLAG_CONTENT_DIR;
1019 if (preserve_devices && IS_DEVICE(mode)) {
1020 uint32 *devp = F_RDEV_P(file);
1021 DEV_MAJOR(devp) = major(rdev);
1022 DEV_MINOR(devp) = minor(rdev);
1025 #ifdef SUPPORT_LINKS
1028 if (first_hlink_ndx >= flist->ndx_start) {
1029 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1030 memcpy(bp, F_SYMLINK(first), linkname_len);
1032 if (munge_symlinks) {
1033 strlcpy(bp, SYMLINK_PREFIX, linkname_len);
1034 bp += SYMLINK_PREFIX_LEN;
1035 linkname_len -= SYMLINK_PREFIX_LEN;
1038 if (sender_symlink_iconv) {
1041 alloc_len = linkname_len;
1044 /* Read the symlink data into the end of our double-sized
1045 * buffer and then convert it into the right spot. */
1046 INIT_XBUF(inbuf, bp + alloc_len - linkname_len,
1047 linkname_len - 1, (size_t)-1);
1048 read_sbuf(f, inbuf.buf, inbuf.len);
1049 INIT_XBUF(outbuf, bp, 0, alloc_len);
1051 if (iconvbufs(ic_recv, &inbuf, &outbuf, ICB_INIT) < 0) {
1052 io_error |= IOERR_GENERAL;
1053 rprintf(FERROR_XFER,
1054 "[%s] cannot convert symlink data for: %s (%s)\n",
1055 who_am_i(), full_fname(thisname), strerror(errno));
1056 bp = (char*)file->basename;
1060 bp[outbuf.len] = '\0';
1063 read_sbuf(f, bp, linkname_len - 1);
1064 if (sanitize_paths && !munge_symlinks && *bp)
1065 sanitize_path(bp, bp, "", lastdir_depth, SP_DEFAULT);
1070 #ifdef SUPPORT_HARD_LINKS
1071 if (preserve_hard_links && xflags & XMIT_HLINKED) {
1072 if (protocol_version >= 30) {
1073 if (xflags & XMIT_HLINK_FIRST) {
1074 F_HL_GNUM(file) = flist->ndx_start + flist->used;
1076 F_HL_GNUM(file) = first_hlink_ndx;
1078 static int32 cnt = 0;
1079 struct ht_int64_node *np;
1082 if (protocol_version < 26) {
1086 if (!(xflags & XMIT_SAME_DEV_pre30))
1087 dev = read_longint(f);
1088 ino = read_longint(f);
1090 np = idev_find(dev, ino);
1091 ndx = (int32)(long)np->data - 1;
1094 np->data = (void*)(long)cnt;
1096 F_HL_GNUM(file) = ndx;
1101 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
1105 /* Prior to 28, we get a useless set of nulls. */
1108 if (first_hlink_ndx >= flist->ndx_start) {
1109 struct file_struct *first = flist->files[first_hlink_ndx - flist->ndx_start];
1110 memcpy(bp, F_SUM(first), checksum_len);
1112 read_buf(f, bp, checksum_len);
1116 if (preserve_acls && !S_ISLNK(mode))
1117 receive_acl(f, file);
1119 #ifdef SUPPORT_XATTRS
1120 if (preserve_xattrs)
1121 receive_xattr(f, file);
1124 if (S_ISREG(mode) || S_ISLNK(mode))
1125 stats.total_size += file_length;
1130 /* Create a file_struct for a named file by reading its stat() information
1131 * and performing extensive checks against global options.
1133 * Returns a pointer to the new file struct, or NULL if there was an error
1134 * or this file should be excluded.
1136 * Note: Any error (here or in send_file_name) that results in the omission of
1137 * an existent source file from the file list should set
1138 * "io_error |= IOERR_GENERAL" to avoid deletion of the file from the
1139 * destination if --delete is on. */
1140 struct file_struct *make_file(const char *fname, struct file_list *flist,
1141 STRUCT_STAT *stp, int flags, int filter_level)
1143 static char *lastdir;
1144 static int lastdir_len = -1;
1145 struct file_struct *file;
1146 char thisname[MAXPATHLEN];
1147 char linkname[MAXPATHLEN];
1148 int alloc_len, basename_len, linkname_len;
1149 int extra_len = file_extra_cnt * EXTRA_LEN;
1150 const char *basename;
1155 if (strlcpy(thisname, fname, sizeof thisname) >= sizeof thisname) {
1156 io_error |= IOERR_GENERAL;
1157 rprintf(FERROR_XFER, "skipping overly long name: %s\n", fname);
1160 clean_fname(thisname, 0);
1162 sanitize_path(thisname, thisname, "", 0, SP_DEFAULT);
1164 if (stp && (S_ISDIR(stp->st_mode) || stp->st_mode == 0)) {
1165 /* This is needed to handle a "symlink/." with a --relative
1166 * dir, or a request to delete a specific file. */
1168 *linkname = '\0'; /* make IBM code checker happy */
1169 } else if (readlink_stat(thisname, &st, linkname) != 0) {
1170 int save_errno = errno;
1171 /* See if file is excluded before reporting an error. */
1172 if (filter_level != NO_FILTERS
1173 && (is_excluded(thisname, 0, filter_level)
1174 || is_excluded(thisname, 1, filter_level))) {
1175 if (ignore_perishable && save_errno != ENOENT)
1176 non_perishable_cnt++;
1179 if (save_errno == ENOENT) {
1180 #ifdef SUPPORT_LINKS
1181 /* When our options tell us to follow a symlink that
1182 * points nowhere, tell the user about the symlink
1183 * instead of giving a "vanished" message. We only
1184 * dereference a symlink if one of the --copy*links
1185 * options was specified, so there's no need for the
1186 * extra lstat() if one of these options isn't on. */
1187 if ((copy_links || copy_unsafe_links || copy_dirlinks)
1188 && x_lstat(thisname, &st, NULL) == 0
1189 && S_ISLNK(st.st_mode)) {
1190 io_error |= IOERR_GENERAL;
1191 rprintf(FERROR_XFER, "symlink has no referent: %s\n",
1192 full_fname(thisname));
1196 enum logcode c = am_daemon && protocol_version < 28
1197 ? FERROR : FWARNING;
1198 io_error |= IOERR_VANISHED;
1199 rprintf(c, "file has vanished: %s\n",
1200 full_fname(thisname));
1203 io_error |= IOERR_GENERAL;
1204 rsyserr(FERROR_XFER, save_errno, "readlink_stat(%s) failed",
1205 full_fname(thisname));
1208 } else if (st.st_mode == 0) {
1209 io_error |= IOERR_GENERAL;
1210 rprintf(FINFO, "skipping file with bogus (zero) st_mode: %s\n",
1211 full_fname(thisname));
1215 if (filter_level == NO_FILTERS)
1218 if (S_ISDIR(st.st_mode)) {
1220 rprintf(FINFO, "skipping directory %s\n", thisname);
1223 /* -x only affects dirs because we need to avoid recursing
1224 * into a mount-point directory, not to avoid copying a
1225 * symlinked file if -L (or similar) was specified. */
1226 if (one_file_system && st.st_dev != filesystem_dev
1227 && BITS_SETnUNSET(flags, FLAG_CONTENT_DIR, FLAG_TOP_DIR)) {
1228 if (one_file_system > 1) {
1229 if (INFO_GTE(MOUNT, 1)) {
1231 "[%s] skipping mount-point dir %s\n",
1232 who_am_i(), thisname);
1236 flags |= FLAG_MOUNT_DIR;
1237 flags &= ~FLAG_CONTENT_DIR;
1240 flags &= ~FLAG_CONTENT_DIR;
1242 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level)) {
1243 if (ignore_perishable)
1244 non_perishable_cnt++;
1248 if (lp_ignore_nonreadable(module_id)) {
1249 #ifdef SUPPORT_LINKS
1250 if (!S_ISLNK(st.st_mode))
1252 if (access(thisname, R_OK) != 0)
1258 /* Only divert a directory in the main transfer. */
1260 if (flist->prev && S_ISDIR(st.st_mode)
1261 && flags & FLAG_DIVERT_DIRS) {
1262 /* Room for parent/sibling/next-child info. */
1263 extra_len += DIRNODE_EXTRA_CNT * EXTRA_LEN;
1265 extra_len += PTR_EXTRA_CNT * EXTRA_LEN;
1266 pool = dir_flist->file_pool;
1268 pool = flist->file_pool;
1271 /* Directories need an extra int32 for the default ACL. */
1272 if (preserve_acls && S_ISDIR(st.st_mode))
1273 extra_len += EXTRA_LEN;
1278 if (DEBUG_GTE(FLIST, 2)) {
1279 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
1280 who_am_i(), thisname, filter_level);
1283 if ((basename = strrchr(thisname, '/')) != NULL) {
1284 int len = basename++ - thisname;
1285 if (len != lastdir_len || memcmp(thisname, lastdir, len) != 0) {
1286 lastdir = new_array(char, len + 1);
1287 memcpy(lastdir, thisname, len);
1288 lastdir[len] = '\0';
1292 basename = thisname;
1293 basename_len = strlen(basename) + 1; /* count the '\0' */
1295 #ifdef SUPPORT_LINKS
1296 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
1301 #ifdef ST_MTIME_NSEC
1302 if (st.ST_MTIME_NSEC && protocol_version >= 31)
1303 extra_len += EXTRA_LEN;
1305 #if SIZEOF_CAPITAL_OFF_T >= 8
1306 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode))
1307 extra_len += EXTRA_LEN;
1310 if (always_checksum && am_sender && S_ISREG(st.st_mode)) {
1311 file_checksum(thisname, tmp_sum, st.st_size);
1312 if (sender_keeps_checksum)
1313 extra_len += SUM_EXTRA_CNT * EXTRA_LEN;
1316 #if EXTRA_ROUNDING > 0
1317 if (extra_len & (EXTRA_ROUNDING * EXTRA_LEN))
1318 extra_len = (extra_len | (EXTRA_ROUNDING * EXTRA_LEN)) + EXTRA_LEN;
1321 alloc_len = FILE_STRUCT_LEN + extra_len + basename_len
1324 bp = pool_alloc(pool, alloc_len, "make_file");
1326 if (!(bp = new_array(char, alloc_len)))
1327 out_of_memory("make_file");
1330 memset(bp, 0, extra_len + FILE_STRUCT_LEN);
1332 file = (struct file_struct *)bp;
1333 bp += FILE_STRUCT_LEN;
1335 memcpy(bp, basename, basename_len);
1337 #ifdef SUPPORT_HARD_LINKS
1338 if (preserve_hard_links && flist && flist->prev) {
1339 if (protocol_version >= 28
1340 ? (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
1341 : S_ISREG(st.st_mode)) {
1342 tmp_dev = (int64)st.st_dev + 1;
1343 tmp_ino = (int64)st.st_ino;
1349 #ifdef HAVE_STRUCT_STAT_ST_RDEV
1350 if (IS_DEVICE(st.st_mode)) {
1351 tmp_rdev = st.st_rdev;
1353 } else if (IS_SPECIAL(st.st_mode))
1357 file->flags = flags;
1358 file->modtime = st.st_mtime;
1359 #ifdef ST_MTIME_NSEC
1360 if (st.ST_MTIME_NSEC && protocol_version >= 31) {
1361 file->flags |= FLAG_MOD_NSEC;
1362 OPT_EXTRA(file, 0)->unum = st.ST_MTIME_NSEC;
1365 file->len32 = (uint32)st.st_size;
1366 #if SIZEOF_CAPITAL_OFF_T >= 8
1367 if (st.st_size > 0xFFFFFFFFu && S_ISREG(st.st_mode)) {
1368 file->flags |= FLAG_LENGTH64;
1369 OPT_EXTRA(file, NSEC_BUMP(file))->unum = (uint32)(st.st_size >> 32);
1372 file->mode = st.st_mode;
1373 if (uid_ndx) /* Check uid_ndx instead of preserve_uid for del support */
1374 F_OWNER(file) = st.st_uid;
1375 if (gid_ndx) /* Check gid_ndx instead of preserve_gid for del support */
1376 F_GROUP(file) = st.st_gid;
1378 if (basename != thisname)
1379 file->dirname = lastdir;
1381 #ifdef SUPPORT_LINKS
1383 memcpy(bp + basename_len, linkname, linkname_len);
1387 F_PATHNAME(file) = pathname;
1389 F_DEPTH(file) = extra_len / EXTRA_LEN;
1391 if (basename_len == 0+1) {
1397 if (sender_keeps_checksum && S_ISREG(st.st_mode))
1398 memcpy(F_SUM(file), tmp_sum, checksum_len);
1401 F_NDX(file) = stats.num_dirs;
1406 /* Only called for temporary file_struct entries created by make_file(). */
1407 void unmake_file(struct file_struct *file)
1409 free(REQ_EXTRA(file, F_DEPTH(file)));
1412 static struct file_struct *send_file_name(int f, struct file_list *flist,
1413 const char *fname, STRUCT_STAT *stp,
1414 int flags, int filter_level)
1416 struct file_struct *file;
1418 file = make_file(fname, flist, stp, flags, filter_level);
1422 if (chmod_modes && !S_ISLNK(file->mode) && file->mode)
1423 file->mode = tweak_mode(file->mode, chmod_modes);
1426 char fbuf[MAXPATHLEN];
1427 #ifdef SUPPORT_LINKS
1428 const char *symlink_name;
1431 char symlink_buf[MAXPATHLEN];
1434 #if defined SUPPORT_ACLS || defined SUPPORT_XATTRS
1439 #ifdef SUPPORT_LINKS
1440 if (preserve_links && S_ISLNK(file->mode)) {
1441 symlink_name = F_SYMLINK(file);
1442 symlink_len = strlen(symlink_name);
1443 if (symlink_len == 0) {
1444 io_error |= IOERR_GENERAL;
1446 rprintf(FERROR_XFER,
1447 "skipping symlink with 0-length value: %s\n",
1452 symlink_name = NULL;
1458 if (ic_send != (iconv_t)-1) {
1461 INIT_CONST_XBUF(outbuf, fbuf);
1463 if (file->dirname) {
1464 INIT_XBUF_STRLEN(inbuf, (char*)file->dirname);
1465 outbuf.size -= 2; /* Reserve room for '/' & 1 more char. */
1466 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0)
1469 fbuf[outbuf.len++] = '/';
1472 INIT_XBUF_STRLEN(inbuf, (char*)file->basename);
1473 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1475 io_error |= IOERR_GENERAL;
1476 rprintf(FERROR_XFER,
1477 "[%s] cannot convert filename: %s (%s)\n",
1478 who_am_i(), f_name(file, fbuf), strerror(errno));
1481 fbuf[outbuf.len] = '\0';
1483 #ifdef SUPPORT_LINKS
1484 if (symlink_len && sender_symlink_iconv) {
1485 INIT_XBUF(inbuf, (char*)symlink_name, symlink_len, (size_t)-1);
1486 INIT_CONST_XBUF(outbuf, symlink_buf);
1487 if (iconvbufs(ic_send, &inbuf, &outbuf, ICB_INIT) < 0) {
1488 io_error |= IOERR_GENERAL;
1490 rprintf(FERROR_XFER,
1491 "[%s] cannot convert symlink data for: %s (%s)\n",
1492 who_am_i(), full_fname(fbuf), strerror(errno));
1495 symlink_buf[outbuf.len] = '\0';
1497 symlink_name = symlink_buf;
1498 symlink_len = outbuf.len;
1506 if (preserve_acls && !S_ISLNK(file->mode)) {
1507 sx.st.st_mode = file->mode;
1508 if (get_acl(fname, &sx) < 0) {
1509 io_error |= IOERR_GENERAL;
1514 #ifdef SUPPORT_XATTRS
1515 if (preserve_xattrs) {
1516 sx.st.st_mode = file->mode;
1517 if (get_xattr(fname, &sx) < 0) {
1518 io_error |= IOERR_GENERAL;
1524 send_file_entry(f, fbuf, file,
1525 #ifdef SUPPORT_LINKS
1526 symlink_name, symlink_len,
1528 flist->used, flist->ndx_start);
1531 if (preserve_acls && !S_ISLNK(file->mode)) {
1536 #ifdef SUPPORT_XATTRS
1537 if (preserve_xattrs) {
1538 F_XATTR(file) = send_xattr(f, &sx);
1544 maybe_emit_filelist_progress(flist->used + flist_count_offset);
1546 flist_expand(flist, 1);
1547 flist->files[flist->used++] = file;
1552 static void send_if_directory(int f, struct file_list *flist,
1553 struct file_struct *file,
1554 char *fbuf, unsigned int ol,
1557 char is_dot_dir = fbuf[ol-1] == '.' && (ol == 1 || fbuf[ol-2] == '/');
1559 if (S_ISDIR(file->mode)
1560 && !(file->flags & FLAG_MOUNT_DIR) && f_name(file, fbuf)) {
1562 unsigned int len = strlen(fbuf);
1563 if (len > 1 && fbuf[len-1] == '/')
1565 if (len >= MAXPATHLEN - 1) {
1566 io_error |= IOERR_GENERAL;
1567 rprintf(FERROR_XFER, "skipping long-named directory: %s\n",
1571 save_filters = push_local_filters(fbuf, len);
1572 send_directory(f, flist, fbuf, len, flags);
1573 pop_local_filters(save_filters);
1580 static int file_compare(const void *file1, const void *file2)
1582 return f_name_cmp(*(struct file_struct **)file1,
1583 *(struct file_struct **)file2);
1586 /* The guts of a merge-sort algorithm. This was derived from the glibc
1587 * version, but I (Wayne) changed the merge code to do less copying and
1588 * to require only half the amount of temporary memory. */
1589 static void fsort_tmp(struct file_struct **fp, size_t num,
1590 struct file_struct **tmp)
1592 struct file_struct **f1, **f2, **t;
1601 fsort_tmp(f1, n1, tmp);
1603 fsort_tmp(f2, n2, tmp);
1605 while (f_name_cmp(*f1, *f2) <= 0) {
1612 memcpy(t, f1, n1 * PTR_SIZE);
1614 *f1++ = *f2++, n2--;
1616 while (n1 > 0 && n2 > 0) {
1617 if (f_name_cmp(*t, *f2) <= 0)
1620 *f1++ = *f2++, n2--;
1624 memcpy(f1, t, n1 * PTR_SIZE);
1627 /* This file-struct sorting routine makes sure that any identical names in
1628 * the file list stay in the same order as they were in the original list.
1629 * This is particularly vital in inc_recurse mode where we expect a sort
1630 * on the flist to match the exact order of a sort on the dir_flist. */
1631 static void fsort(struct file_struct **fp, size_t num)
1637 qsort(fp, num, PTR_SIZE, file_compare);
1639 struct file_struct **tmp = new_array(struct file_struct *,
1641 fsort_tmp(fp, num, tmp);
1646 /* We take an entire set of sibling dirs from the sorted flist and link them
1647 * into the tree, setting the appropriate parent/child/sibling pointers. */
1648 static void add_dirs_to_tree(int parent_ndx, struct file_list *from_flist,
1653 int32 *parent_dp = parent_ndx < 0 ? NULL
1654 : F_DIR_NODE_P(dir_flist->sorted[parent_ndx]);
1656 flist_expand(dir_flist, dir_cnt);
1657 dir_flist->sorted = dir_flist->files;
1659 for (i = 0; dir_cnt; i++) {
1660 struct file_struct *file = from_flist->sorted[i];
1662 if (!S_ISDIR(file->mode))
1665 dir_flist->files[dir_flist->used++] = file;
1668 if (file->basename[0] == '.' && file->basename[1] == '\0')
1672 DIR_NEXT_SIBLING(dp) = dir_flist->used - 1;
1674 DIR_FIRST_CHILD(parent_dp) = dir_flist->used - 1;
1676 send_dir_ndx = dir_flist->used - 1;
1678 dp = F_DIR_NODE_P(file);
1679 DIR_PARENT(dp) = parent_ndx;
1680 DIR_FIRST_CHILD(dp) = -1;
1683 DIR_NEXT_SIBLING(dp) = -1;
1686 static void interpret_stat_error(const char *fname, int is_dir)
1688 if (errno == ENOENT) {
1689 io_error |= IOERR_VANISHED;
1690 rprintf(FWARNING, "%s has vanished: %s\n",
1691 is_dir ? "directory" : "file", full_fname(fname));
1693 io_error |= IOERR_GENERAL;
1694 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
1699 /* This function is normally called by the sender, but the receiving side also
1700 * calls it from get_dirlist() with f set to -1 so that we just construct the
1701 * file list in memory without sending it over the wire. Also, get_dirlist()
1702 * might call this with f set to -2, which also indicates that local filter
1703 * rules should be ignored. */
1704 static void send_directory(int f, struct file_list *flist, char *fbuf, int len,
1711 int divert_dirs = (flags & FLAG_DIVERT_DIRS) != 0;
1712 int start = flist->used;
1713 int filter_level = f == -2 ? SERVER_FILTERS : ALL_FILTERS;
1715 assert(flist != NULL);
1717 if (!(d = opendir(fbuf))) {
1718 if (errno == ENOENT) {
1719 if (am_sender) /* Can abuse this for vanished error w/ENOENT: */
1720 interpret_stat_error(fbuf, True);
1723 io_error |= IOERR_GENERAL;
1724 rsyserr(FERROR_XFER, errno, "opendir %s failed", full_fname(fbuf));
1729 if (len != 1 || *fbuf != '/')
1732 remainder = MAXPATHLEN - (p - fbuf);
1734 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1735 char *dname = d_name(di);
1736 if (dname[0] == '.' && (dname[1] == '\0'
1737 || (dname[1] == '.' && dname[2] == '\0')))
1739 if (strlcpy(p, dname, remainder) >= remainder) {
1740 io_error |= IOERR_GENERAL;
1741 rprintf(FERROR_XFER,
1742 "cannot send long-named file %s\n",
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 void send1extra(int f, struct file_struct *file, struct file_list *flist)
1877 char fbuf[MAXPATHLEN];
1878 item_list *relname_list;
1879 int len, dlen, flags = FLAG_DIVERT_DIRS | FLAG_CONTENT_DIR;
1883 dlen = strlen(fbuf);
1885 if (!change_pathname(file, NULL, 0))
1886 exit_cleanup(RERR_FILESELECT);
1888 change_local_filter_dir(fbuf, dlen, send_dir_depth);
1890 if (file->flags & FLAG_CONTENT_DIR) {
1891 if (one_file_system) {
1893 if (link_stat(fbuf, &st, copy_dirlinks) != 0) {
1894 interpret_stat_error(fbuf, True);
1897 filesystem_dev = st.st_dev;
1899 send_directory(f, flist, fbuf, dlen, flags);
1902 if (!relative_paths)
1905 memcpy(&relname_list, F_DIR_RELNAMES_P(file), sizeof relname_list);
1909 for (j = 0; j < relname_list->count; j++) {
1911 relnamecache *rnp = ((relnamecache**)relname_list->items)[j];
1912 char name_type = rnp->name_type;
1915 len = strlcpy(fbuf + dlen + 1, rnp->fname, sizeof fbuf - dlen - 1);
1917 if (len >= (int)sizeof fbuf)
1918 continue; /* Impossible... */
1920 slash = strchr(fbuf+dlen+1, '/');
1922 send_implied_dirs(f, flist, fbuf, fbuf+dlen+1, slash, flags, name_type);
1926 if (name_type != NORMAL_NAME) {
1928 if (link_stat(fbuf, &st, 1) != 0) {
1929 interpret_stat_error(fbuf, True);
1932 send_file_name(f, flist, fbuf, &st, FLAG_TOP_DIR | flags, ALL_FILTERS);
1934 send_file_name(f, flist, fbuf, NULL, FLAG_TOP_DIR | flags, ALL_FILTERS);
1940 void send_extra_file_list(int f, int at_least)
1942 struct file_list *flist;
1945 int save_io_error = io_error;
1951 at_least = file_total - file_old_total + 1;
1953 /* Keep sending data until we have the requested number of
1954 * files in the upcoming file-lists. */
1955 while (file_total - file_old_total < at_least) {
1956 struct file_struct *file = dir_flist->sorted[send_dir_ndx];
1957 int dir_ndx, dstart = stats.num_dirs;
1958 const char *pathname = F_PATHNAME(file);
1961 flist = flist_new(0, "send_extra_file_list");
1962 start_write = stats.total_written;
1965 dir_ndx = F_NDX(file);
1967 dir_ndx = send_dir_ndx;
1968 write_ndx(f, NDX_FLIST_OFFSET - dir_ndx);
1969 flist->parent_ndx = dir_ndx;
1971 send1extra(f, file, flist);
1972 prev_flags = file->flags;
1973 dp = F_DIR_NODE_P(file);
1975 /* If there are any duplicate directory names that follow, we
1976 * send all the dirs together in one file-list. The dir_flist
1977 * tree links all the child subdirs onto the last dup dir. */
1978 while ((dir_ndx = DIR_NEXT_SIBLING(dp)) >= 0
1979 && dir_flist->sorted[dir_ndx]->flags & FLAG_DUPLICATE) {
1980 send_dir_ndx = dir_ndx;
1981 file = dir_flist->sorted[dir_ndx];
1982 /* Try to avoid some duplicate scanning of identical dirs. */
1983 if (F_PATHNAME(file) == pathname && prev_flags & FLAG_CONTENT_DIR)
1984 file->flags &= ~FLAG_CONTENT_DIR;
1985 send1extra(f, file, flist);
1986 prev_flags = file->flags;
1987 dp = F_DIR_NODE_P(file);
1990 if (protocol_version < 31 || io_error == save_io_error || ignore_errors)
1993 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
1994 write_varint(f, io_error);
1997 if (need_unsorted_flist) {
1998 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
1999 out_of_memory("send_extra_file_list");
2000 memcpy(flist->sorted, flist->files,
2001 flist->used * sizeof (struct file_struct*));
2003 flist->sorted = flist->files;
2005 flist_sort_and_clean(flist, 0);
2007 add_dirs_to_tree(send_dir_ndx, flist, stats.num_dirs - dstart);
2008 flist_done_allocating(flist);
2010 file_total += flist->used;
2011 stats.flist_size += stats.total_written - start_write;
2012 stats.num_files += flist->used;
2013 if (DEBUG_GTE(FLIST, 3))
2014 output_flist(flist);
2016 if (DIR_FIRST_CHILD(dp) >= 0) {
2017 send_dir_ndx = DIR_FIRST_CHILD(dp);
2020 while (DIR_NEXT_SIBLING(dp) < 0) {
2021 if ((send_dir_ndx = DIR_PARENT(dp)) < 0) {
2022 write_ndx(f, NDX_FLIST_EOF);
2024 if (DEBUG_GTE(FLIST, 3))
2025 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
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, reenable_multiplex = -1;
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);
2094 if (protocol_version < 31) {
2095 /* Older protocols send the files-from data w/o packaging
2096 * it in multiplexed I/O packets, so temporarily switch
2097 * to buffered I/O to match this behavior. */
2098 reenable_multiplex = io_end_multiplex_in(MPLX_TO_BUFFERED);
2104 orig_dir = strdup(curr_dir);
2107 char fbuf[MAXPATHLEN], *fn, name_type;
2110 if (read_line(filesfrom_fd, fbuf, sizeof fbuf, rl_flags) == 0)
2112 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2116 strlcpy(fbuf, *argv++, MAXPATHLEN);
2118 sanitize_path(fbuf, fbuf, "", 0, SP_KEEP_DOT_DIRS);
2122 if (relative_paths) {
2123 /* We clean up fbuf below. */
2124 name_type = NORMAL_NAME;
2125 } else if (!len || fbuf[len - 1] == '/') {
2126 if (len == 2 && fbuf[0] == '.') {
2127 /* Turn "./" into just "." rather than "./." */
2130 if (len + 1 >= MAXPATHLEN)
2131 overflow_exit("send_file_list");
2135 name_type = DOTDIR_NAME;
2136 } else if (len > 1 && fbuf[len-1] == '.' && fbuf[len-2] == '.'
2137 && (len == 2 || fbuf[len-3] == '/')) {
2138 if (len + 2 >= MAXPATHLEN)
2139 overflow_exit("send_file_list");
2143 name_type = DOTDIR_NAME;
2144 } else if (fbuf[len-1] == '.' && (len == 1 || fbuf[len-2] == '/'))
2145 name_type = DOTDIR_NAME;
2147 name_type = NORMAL_NAME;
2151 if (!relative_paths) {
2152 p = strrchr(fbuf, '/');
2159 len -= p - fbuf + 1;
2164 if ((p = strstr(fbuf, "/./")) != NULL) {
2170 clean_fname(dir, 0);
2176 *--fn = '\0'; /* ensure room for '.' */
2179 /* A leading ./ can be used in relative mode to affect
2180 * the dest dir without its name being in the path. */
2181 if (*fn == '.' && fn[1] == '/' && !implied_dot_dir) {
2182 send_file_name(f, flist, ".", NULL,
2183 (flags | FLAG_IMPLIED_DIR) & ~FLAG_CONTENT_DIR,
2185 implied_dot_dir = 1;
2187 len = clean_fname(fn, CFN_KEEP_TRAILING_SLASH
2188 | CFN_DROP_TRAILING_DOT_DIR);
2193 name_type = DOTDIR_NAME;
2194 } else if (fn[0] == '.')
2195 name_type = DOTDIR_NAME;
2196 } else if (fn[len-1] == '/') {
2198 if (len == 1 && *fn == '.')
2199 name_type = DOTDIR_NAME;
2201 name_type = SLASH_ENDING_NAME;
2203 /* Reject a ".." dir in the active part of the path. */
2204 for (p = fn; (p = strstr(p, "..")) != NULL; p += 2) {
2205 if ((p[2] == '/' || p[2] == '\0')
2206 && (p == fn || p[-1] == '/')) {
2208 "found \"..\" dir in relative path: %s\n",
2210 exit_cleanup(RERR_SYNTAX);
2218 name_type = DOTDIR_NAME;
2221 dirlen = dir ? strlen(dir) : 0;
2222 if (dirlen != lastdir_len || memcmp(lastdir, dir, dirlen) != 0) {
2223 if (!change_pathname(NULL, dir, -dirlen))
2226 lastdir_len = pathname_len;
2227 } else if (!change_pathname(NULL, lastdir, lastdir_len))
2231 memmove(fbuf, fn, len + 1);
2233 if (link_stat(fbuf, &st, copy_dirlinks || name_type != NORMAL_NAME) != 0
2234 || (name_type != DOTDIR_NAME && is_daemon_excluded(fbuf, S_ISDIR(st.st_mode)))
2235 || (relative_paths && path_is_daemon_excluded(fbuf, 1))) {
2236 if (errno != ENOENT || missing_args == 0) {
2237 /* This is a transfer error, but inhibit deletion
2238 * only if we might be omitting an existing file. */
2239 if (errno != ENOENT)
2240 io_error |= IOERR_GENERAL;
2241 rsyserr(FERROR_XFER, errno, "link_stat %s failed",
2244 } else if (missing_args == 1) {
2245 /* Just ignore the arg. */
2247 } else /* (missing_args == 2) */ {
2248 /* Send the arg as a "missing" entry with
2249 * mode 0, which tells the generator to delete it. */
2250 memset(&st, 0, sizeof st);
2254 /* A dot-dir should not be excluded! */
2255 if (name_type != DOTDIR_NAME && st.st_mode != 0
2256 && is_excluded(fbuf, S_ISDIR(st.st_mode) != 0, ALL_FILTERS))
2259 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
2260 rprintf(FINFO, "skipping directory %s\n", fbuf);
2264 if (inc_recurse && relative_paths && *fbuf) {
2265 if ((p = strchr(fbuf+1, '/')) != NULL) {
2266 if (p - fbuf == 1 && *fbuf == '.') {
2267 if ((fn = strchr(p+1, '/')) != NULL)
2271 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, name_type);
2275 } else if (implied_dirs && (p=strrchr(fbuf,'/')) && p != fbuf) {
2276 /* Send the implied directories at the start of the
2277 * source spec, so we get their permissions right. */
2278 send_implied_dirs(f, flist, fbuf, fbuf, p, flags, 0);
2281 if (one_file_system)
2282 filesystem_dev = st.st_dev;
2284 if (recurse || (xfer_dirs && name_type != NORMAL_NAME)) {
2285 struct file_struct *file;
2286 file = send_file_name(f, flist, fbuf, &st,
2287 FLAG_TOP_DIR | FLAG_CONTENT_DIR | flags,
2292 if (name_type == DOTDIR_NAME) {
2293 if (send_dir_depth < 0) {
2295 change_local_filter_dir(fbuf, len, send_dir_depth);
2297 send_directory(f, flist, fbuf, len, flags);
2300 send_if_directory(f, flist, file, fbuf, len, flags);
2302 send_file_name(f, flist, fbuf, &st, flags, NO_FILTERS);
2305 if (reenable_multiplex >= 0)
2306 io_start_multiplex_in(reenable_multiplex);
2308 gettimeofday(&end_tv, NULL);
2309 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2310 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2311 if (stats.flist_buildtime == 0)
2312 stats.flist_buildtime = 1;
2315 /* Indicate end of file list */
2316 if (protocol_version < 31 || io_error == 0 || ignore_errors)
2319 write_shortint(f, XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST);
2320 write_varint(f, io_error);
2323 #ifdef SUPPORT_HARD_LINKS
2324 if (preserve_hard_links && protocol_version >= 30 && !inc_recurse)
2328 if (show_filelist_p())
2329 finish_filelist_progress(flist);
2331 gettimeofday(&end_tv, NULL);
2332 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
2333 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
2335 /* When converting names, both sides keep an unsorted file-list array
2336 * because the names will differ on the sending and receiving sides
2337 * (both sides will use the unsorted index number for each item). */
2339 /* Sort the list without removing any duplicates. This allows the
2340 * receiving side to ask for whatever name it kept. For incremental
2341 * recursion mode, the sender marks duplicate dirs so that it can
2342 * send them together in a single file-list. */
2343 if (need_unsorted_flist) {
2344 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2345 out_of_memory("send_file_list");
2346 memcpy(flist->sorted, flist->files,
2347 flist->used * sizeof (struct file_struct*));
2349 flist->sorted = flist->files;
2350 flist_sort_and_clean(flist, 0);
2351 file_total += flist->used;
2353 if (numeric_ids <= 0 && !inc_recurse)
2356 /* send the io_error flag */
2357 if (protocol_version < 30)
2358 write_int(f, ignore_errors ? 0 : io_error);
2359 else if (io_error && protocol_version == 30 && !ignore_errors)
2360 send_msg_int(MSG_IO_ERROR, io_error);
2362 if (disable_buffering)
2363 io_end_buffering_out(IOBUF_FREE_BUFS);
2365 stats.flist_size = stats.total_written - start_write;
2366 stats.num_files = flist->used;
2368 if (DEBUG_GTE(FLIST, 3))
2369 output_flist(flist);
2371 if (DEBUG_GTE(FLIST, 2))
2372 rprintf(FINFO, "send_file_list done\n");
2376 add_dirs_to_tree(-1, flist, stats.num_dirs);
2377 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2378 flist->parent_ndx = -1;
2379 flist_done_allocating(flist);
2380 if (send_dir_ndx < 0) {
2381 write_ndx(f, NDX_FLIST_EOF);
2383 if (DEBUG_GTE(FLIST, 3))
2384 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2386 else if (file_total == 1) {
2387 /* If we're creating incremental file-lists and there
2388 * was just 1 item in the first file-list, send 1 more
2389 * file-list to check if this is a 1-file xfer. */
2390 send_extra_file_list(f, 1);
2394 if (DEBUG_GTE(FLIST, 3))
2395 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2401 struct file_list *recv_file_list(int f)
2403 struct file_list *flist;
2408 if (show_filelist_p())
2409 start_filelist_progress("receiving file list");
2410 else if (inc_recurse && INFO_GTE(FLIST, 1) && !am_server)
2411 rprintf(FCLIENT, "receiving incremental file list\n");
2412 rprintf(FLOG, "receiving file list\n");
2414 parse_name_map(usermap, True);
2416 parse_name_map(groupmap, False);
2419 start_read = stats.total_read;
2421 #ifdef SUPPORT_HARD_LINKS
2422 if (preserve_hard_links && !first_flist)
2426 flist = flist_new(0, "recv_file_list");
2429 if (flist->ndx_start == 1)
2430 dir_flist = flist_new(FLIST_TEMP, "recv_file_list");
2431 dstart = dir_flist->used;
2437 while ((flags = read_byte(f)) != 0) {
2438 struct file_struct *file;
2440 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
2441 flags |= read_byte(f) << 8;
2443 if (flags == (XMIT_EXTENDED_FLAGS|XMIT_IO_ERROR_ENDLIST)) {
2445 if (protocol_version < 31) {
2446 rprintf(FERROR, "Invalid flist flag: %x\n", flags);
2447 exit_cleanup(RERR_PROTOCOL);
2449 err = read_varint(f);
2455 flist_expand(flist, 1);
2456 file = recv_file_entry(f, flist, flags);
2458 if (S_ISREG(file->mode)) {
2459 /* Already counted */
2460 } else if (S_ISDIR(file->mode)) {
2462 flist_expand(dir_flist, 1);
2463 dir_flist->files[dir_flist->used++] = file;
2466 } else if (S_ISLNK(file->mode))
2467 stats.num_symlinks++;
2468 else if (IS_DEVICE(file->mode))
2469 stats.num_symlinks++;
2471 stats.num_specials++;
2473 flist->files[flist->used++] = file;
2475 maybe_emit_filelist_progress(flist->used);
2477 if (DEBUG_GTE(FLIST, 2)) {
2478 char *name = f_name(file, NULL);
2479 rprintf(FINFO, "recv_file_name(%s)\n", NS(name));
2482 file_total += flist->used;
2484 if (DEBUG_GTE(FLIST, 2))
2485 rprintf(FINFO, "received %d names\n", flist->used);
2487 if (show_filelist_p())
2488 finish_filelist_progress(flist);
2490 if (need_unsorted_flist) {
2491 /* Create an extra array of index pointers that we can sort for
2492 * the generator's use (for wading through the files in sorted
2493 * order and for calling flist_find()). We keep the "files"
2494 * list unsorted for our exchange of index numbers with the
2495 * other side (since their names may not sort the same). */
2496 if (!(flist->sorted = new_array(struct file_struct *, flist->used)))
2497 out_of_memory("recv_file_list");
2498 memcpy(flist->sorted, flist->files,
2499 flist->used * sizeof (struct file_struct*));
2500 if (inc_recurse && dir_flist->used > dstart) {
2501 static int dir_flist_malloced = 0;
2502 if (dir_flist_malloced < dir_flist->malloced) {
2503 dir_flist->sorted = realloc_array(dir_flist->sorted,
2504 struct file_struct *,
2505 dir_flist->malloced);
2506 dir_flist_malloced = dir_flist->malloced;
2508 memcpy(dir_flist->sorted + dstart, dir_flist->files + dstart,
2509 (dir_flist->used - dstart) * sizeof (struct file_struct*));
2510 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2513 flist->sorted = flist->files;
2514 if (inc_recurse && dir_flist->used > dstart) {
2515 dir_flist->sorted = dir_flist->files;
2516 fsort(dir_flist->sorted + dstart, dir_flist->used - dstart);
2521 flist_done_allocating(flist);
2523 recv_id_list(f, flist);
2525 if (DEBUG_GTE(FLIST, 3))
2526 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2529 flist_sort_and_clean(flist, relative_paths);
2531 if (protocol_version < 30) {
2532 /* Recv the io_error flag */
2533 int err = read_int(f);
2536 } else if (inc_recurse && flist->ndx_start == 1) {
2537 if (!file_total || strcmp(flist->sorted[flist->low]->basename, ".") != 0)
2538 flist->parent_ndx = -1;
2541 if (DEBUG_GTE(FLIST, 3))
2542 output_flist(flist);
2544 if (DEBUG_GTE(FLIST, 2))
2545 rprintf(FINFO, "recv_file_list done\n");
2547 stats.flist_size += stats.total_read - start_read;
2548 stats.num_files += flist->used;
2553 /* This is only used once by the receiver if the very first file-list
2554 * has exactly one item in it. */
2555 void recv_additional_file_list(int f)
2557 struct file_list *flist;
2558 int ndx = read_ndx(f);
2559 if (ndx == NDX_FLIST_EOF) {
2561 if (DEBUG_GTE(FLIST, 3))
2562 rprintf(FINFO, "[%s] flist_eof=1\n", who_am_i());
2563 change_local_filter_dir(NULL, 0, 0);
2565 ndx = NDX_FLIST_OFFSET - ndx;
2566 if (ndx < 0 || ndx >= dir_flist->used) {
2567 ndx = NDX_FLIST_OFFSET - ndx;
2569 "[%s] Invalid dir index: %d (%d - %d)\n",
2570 who_am_i(), ndx, NDX_FLIST_OFFSET,
2571 NDX_FLIST_OFFSET - dir_flist->used + 1);
2572 exit_cleanup(RERR_PROTOCOL);
2574 if (DEBUG_GTE(FLIST, 3)) {
2575 rprintf(FINFO, "[%s] receiving flist for dir %d\n",
2578 flist = recv_file_list(f);
2579 flist->parent_ndx = ndx;
2583 /* Search for an identically-named item in the file list. Note that the
2584 * items must agree in their directory-ness, or no match is returned. */
2585 int flist_find(struct file_list *flist, struct file_struct *f)
2587 int low = flist->low, high = flist->high;
2588 int diff, mid, mid_up;
2590 while (low <= high) {
2591 mid = (low + high) / 2;
2592 if (F_IS_ACTIVE(flist->sorted[mid]))
2595 /* Scan for the next non-empty entry using the cached
2596 * distance values. If the value isn't fully up-to-
2597 * date, update it. */
2598 mid_up = mid + F_DEPTH(flist->sorted[mid]);
2599 if (!F_IS_ACTIVE(flist->sorted[mid_up])) {
2601 mid_up += F_DEPTH(flist->sorted[mid_up]);
2602 } while (!F_IS_ACTIVE(flist->sorted[mid_up]));
2603 F_DEPTH(flist->sorted[mid]) = mid_up - mid;
2605 if (mid_up > high) {
2606 /* If there's nothing left above us, set high to
2607 * a non-empty entry below us and continue. */
2608 high = mid - (int)flist->sorted[mid]->len32;
2609 if (!F_IS_ACTIVE(flist->sorted[high])) {
2611 high -= (int)flist->sorted[high]->len32;
2612 } while (!F_IS_ACTIVE(flist->sorted[high]));
2613 flist->sorted[mid]->len32 = mid - high;
2618 diff = f_name_cmp(flist->sorted[mid_up], f);
2620 if (protocol_version < 29
2621 && S_ISDIR(flist->sorted[mid_up]->mode)
2622 != S_ISDIR(f->mode))
2634 /* Search for an identically-named item in the file list. Differs from
2635 * flist_find in that an item that agrees with "f" in directory-ness is
2636 * preferred but one that does not is still found. */
2637 int flist_find_ignore_dirness(struct file_list *flist, struct file_struct *f)
2642 /* First look for an item that agrees in directory-ness. */
2643 ndx = flist_find(flist, f);
2647 /* Temporarily flip f->mode to look for an item of opposite
2648 * directory-ness. */
2649 save_mode = f->mode;
2650 f->mode = S_ISDIR(f->mode) ? S_IFREG : S_IFDIR;
2651 ndx = flist_find(flist, f);
2652 f->mode = save_mode;
2657 * Free up any resources a file_struct has allocated
2658 * and clear the file.
2660 void clear_file(struct file_struct *file)
2662 /* The +1 zeros out the first char of the basename. */
2663 memset(file, 0, FILE_STRUCT_LEN + 1);
2664 /* In an empty entry, F_DEPTH() is an offset to the next non-empty
2665 * entry. Likewise for len32 in the opposite direction. We assume
2666 * that we're alone for now since flist_find() will adjust the counts
2667 * it runs into that aren't up-to-date. */
2668 file->len32 = F_DEPTH(file) = 1;
2671 /* Allocate a new file list. */
2672 struct file_list *flist_new(int flags, char *msg)
2674 struct file_list *flist;
2676 if (!(flist = new0(struct file_list)))
2679 if (flags & FLIST_TEMP) {
2680 if (!(flist->file_pool = pool_create(SMALL_EXTENT, 0,
2685 /* This is a doubly linked list with prev looping back to
2686 * the end of the list, but the last next pointer is NULL. */
2688 flist->file_pool = pool_create(NORMAL_EXTENT, 0,
2691 if (!flist->file_pool)
2694 flist->ndx_start = flist->flist_num = inc_recurse ? 1 : 0;
2696 first_flist = cur_flist = flist->prev = flist;
2698 struct file_list *prev = first_flist->prev;
2700 flist->file_pool = first_flist->file_pool;
2702 flist->ndx_start = prev->ndx_start + prev->used + 1;
2703 flist->flist_num = prev->flist_num + 1;
2706 prev->next = first_flist->prev = flist;
2708 flist->pool_boundary = pool_boundary(flist->file_pool, 0);
2715 /* Free up all elements in a flist. */
2716 void flist_free(struct file_list *flist)
2719 /* Was FLIST_TEMP dir-list. */
2720 } else if (flist == flist->prev) {
2721 first_flist = cur_flist = NULL;
2725 if (flist == cur_flist)
2726 cur_flist = flist->next;
2727 if (flist == first_flist)
2728 first_flist = first_flist->next;
2730 flist->prev->next = flist->next;
2732 flist->next = first_flist;
2734 flist->next->prev = flist->prev;
2735 file_total -= flist->used;
2739 if (!flist->prev || !flist_cnt)
2740 pool_destroy(flist->file_pool);
2742 pool_free_old(flist->file_pool, flist->pool_boundary);
2744 if (flist->sorted && flist->sorted != flist->files)
2745 free(flist->sorted);
2750 /* This routine ensures we don't have any duplicate names in our file list.
2751 * duplicate names can cause corruption because of the pipelining. */
2752 static void flist_sort_and_clean(struct file_list *flist, int strip_root)
2754 char fbuf[MAXPATHLEN];
2759 if (flist->used == 0) {
2765 fsort(flist->sorted, flist->used);
2767 if (!am_sender || inc_recurse) {
2768 for (i = prev_i = 0; i < flist->used; i++) {
2769 if (F_IS_ACTIVE(flist->sorted[i])) {
2774 flist->low = prev_i;
2776 i = prev_i = flist->used - 1;
2780 while (++i < flist->used) {
2782 struct file_struct *file = flist->sorted[i];
2784 if (!F_IS_ACTIVE(file))
2786 if (f_name_cmp(file, flist->sorted[prev_i]) == 0)
2788 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
2789 int save_mode = file->mode;
2790 /* Make sure that this directory doesn't duplicate a
2791 * non-directory earlier in the list. */
2792 flist->high = prev_i;
2793 file->mode = S_IFREG;
2794 j = flist_find(flist, file);
2795 file->mode = save_mode;
2800 /* If one is a dir and the other is not, we want to
2801 * keep the dir because it might have contents in the
2802 * list. Otherwise keep the first one. */
2803 if (S_ISDIR(file->mode)) {
2804 struct file_struct *fp = flist->sorted[j];
2805 if (!S_ISDIR(fp->mode))
2809 file->flags |= FLAG_DUPLICATE;
2810 else { /* Make sure we merge our vital flags. */
2811 fp->flags |= file->flags & (FLAG_TOP_DIR|FLAG_CONTENT_DIR);
2812 fp->flags &= file->flags | ~FLAG_IMPLIED_DIR;
2820 if (DEBUG_GTE(DUP, 1)) {
2822 "removing duplicate name %s from file list (%d)\n",
2823 f_name(file, fbuf), drop + flist->ndx_start);
2825 clear_file(flist->sorted[drop]);
2829 if (flist->low == drop) {
2831 j < i && !F_IS_ACTIVE(flist->sorted[j]);
2840 flist->high = prev_i;
2843 /* We need to strip off the leading slashes for relative
2844 * paths, but this must be done _after_ the sorting phase. */
2845 for (i = flist->low; i <= flist->high; i++) {
2846 struct file_struct *file = flist->sorted[i];
2850 while (*file->dirname == '/')
2852 if (!*file->dirname)
2853 file->dirname = NULL;
2857 if (prune_empty_dirs && !am_sender) {
2858 int j, prev_depth = 0;
2860 prev_i = 0; /* It's OK that this isn't really true. */
2862 for (i = flist->low; i <= flist->high; i++) {
2863 struct file_struct *fp, *file = flist->sorted[i];
2865 /* This temporarily abuses the F_DEPTH() value for a
2866 * directory that is in a chain that might get pruned.
2867 * We restore the old value if it gets a reprieve. */
2868 if (S_ISDIR(file->mode) && F_DEPTH(file)) {
2869 /* Dump empty dirs when coming back down. */
2870 for (j = prev_depth; j >= F_DEPTH(file); j--) {
2871 fp = flist->sorted[prev_i];
2872 if (F_DEPTH(fp) >= 0)
2874 prev_i = -F_DEPTH(fp)-1;
2877 prev_depth = F_DEPTH(file);
2878 if (is_excluded(f_name(file, fbuf), 1,
2880 /* Keep dirs through this dir. */
2881 for (j = prev_depth-1; ; j--) {
2882 fp = flist->sorted[prev_i];
2883 if (F_DEPTH(fp) >= 0)
2885 prev_i = -F_DEPTH(fp)-1;
2889 F_DEPTH(file) = -prev_i-1;
2892 /* Keep dirs through this non-dir. */
2893 for (j = prev_depth; ; j--) {
2894 fp = flist->sorted[prev_i];
2895 if (F_DEPTH(fp) >= 0)
2897 prev_i = -F_DEPTH(fp)-1;
2902 /* Dump all remaining empty dirs. */
2904 struct file_struct *fp = flist->sorted[prev_i];
2905 if (F_DEPTH(fp) >= 0)
2907 prev_i = -F_DEPTH(fp)-1;
2911 for (i = flist->low; i <= flist->high; i++) {
2912 if (F_IS_ACTIVE(flist->sorted[i]))
2916 for (i = flist->high; i >= flist->low; i--) {
2917 if (F_IS_ACTIVE(flist->sorted[i]))
2924 static void output_flist(struct file_list *flist)
2926 char uidbuf[16], gidbuf[16], depthbuf[16];
2927 struct file_struct *file;
2928 const char *root, *dir, *slash, *name, *trail;
2929 const char *who = who_am_i();
2932 rprintf(FINFO, "[%s] flist start=%d, used=%d, low=%d, high=%d\n",
2933 who, flist->ndx_start, flist->used, flist->low, flist->high);
2934 for (i = 0; i < flist->used; i++) {
2935 file = flist->files[i];
2936 if ((am_root || am_sender) && uid_ndx) {
2937 snprintf(uidbuf, sizeof uidbuf, " uid=%u",
2942 static char parens[] = "(\0)\0\0\0";
2943 char *pp = parens + (file->flags & FLAG_SKIP_GROUP ? 0 : 3);
2944 snprintf(gidbuf, sizeof gidbuf, " gid=%s%u%s",
2945 pp, F_GROUP(file), pp + 2);
2949 snprintf(depthbuf, sizeof depthbuf, "%d", F_DEPTH(file));
2950 if (F_IS_ACTIVE(file)) {
2951 root = am_sender ? NS(F_PATHNAME(file)) : depthbuf;
2952 if ((dir = file->dirname) == NULL)
2956 name = file->basename;
2957 trail = S_ISDIR(file->mode) ? "/" : "";
2959 root = dir = slash = name = trail = "";
2961 "[%s] i=%d %s %s%s%s%s mode=0%o len=%s%s%s flags=%x\n",
2962 who, i + flist->ndx_start,
2963 root, dir, slash, name, trail,
2964 (int)file->mode, comma_num(F_LENGTH(file)),
2965 uidbuf, gidbuf, file->flags);
2969 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
2970 enum fnc_type { t_PATH, t_ITEM };
2972 static int found_prefix;
2974 /* Compare the names of two file_struct entities, similar to how strcmp()
2975 * would do if it were operating on the joined strings.
2977 * Some differences beginning with protocol_version 29: (1) directory names
2978 * are compared with an assumed trailing slash so that they compare in a
2979 * way that would cause them to sort immediately prior to any content they
2980 * may have; (2) a directory of any name compares after a non-directory of
2981 * any name at the same depth; (3) a directory with name "." compares prior
2982 * to anything else. These changes mean that a directory and a non-dir
2983 * with the same name will not compare as equal (protocol_version >= 29).
2985 * The dirname component can be an empty string, but the basename component
2986 * cannot (and never is in the current codebase). The basename component
2987 * may be NULL (for a removed item), in which case it is considered to be
2988 * after any existing item. */
2989 int f_name_cmp(const struct file_struct *f1, const struct file_struct *f2)
2992 const uchar *c1, *c2;
2993 enum fnc_state state1, state2;
2994 enum fnc_type type1, type2;
2995 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
2997 if (!f1 || !F_IS_ACTIVE(f1)) {
2998 if (!f2 || !F_IS_ACTIVE(f2))
3002 if (!f2 || !F_IS_ACTIVE(f2))
3005 c1 = (uchar*)f1->dirname;
3006 c2 = (uchar*)f2->dirname;
3010 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3011 c1 = (const uchar*)f1->basename;
3012 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3014 state1 = s_TRAILING;
3023 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3024 c2 = (const uchar*)f2->basename;
3025 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3027 state2 = s_TRAILING;
3037 return type1 == t_PATH ? 1 : -1;
3047 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
3048 c1 = (const uchar*)f1->basename;
3049 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
3051 state1 = s_TRAILING;
3057 state1 = s_TRAILING;
3058 if (type1 == t_PATH) {
3067 if (*c2 && type1 != type2)
3068 return type1 == t_PATH ? 1 : -1;
3077 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
3078 c2 = (const uchar*)f2->basename;
3079 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
3081 state2 = s_TRAILING;
3087 state2 = s_TRAILING;
3088 if (type2 == t_PATH) {
3101 return type1 == t_PATH ? 1 : -1;
3103 } while ((dif = (int)*c1++ - (int)*c2++) == 0);
3108 /* Returns 1 if f1's filename has all of f2's filename as a prefix. This does
3109 * not match if f2's basename is not an exact match of a path element in f1.
3110 * E.g. /path/foo is not a prefix of /path/foobar/baz, but /path/foobar is. */
3111 int f_name_has_prefix(const struct file_struct *f1, const struct file_struct *f2)
3115 return found_prefix;
3118 char *f_name_buf(void)
3120 static char names[5][MAXPATHLEN];
3121 static unsigned int n;
3123 n = (n + 1) % (sizeof names / sizeof names[0]);
3128 /* Return a copy of the full filename of a flist entry, using the indicated
3129 * buffer or one of 5 static buffers if fbuf is NULL. No size-checking is
3130 * done because we checked the size when creating the file_struct entry.
3132 char *f_name(const struct file_struct *f, char *fbuf)
3134 if (!f || !F_IS_ACTIVE(f))
3138 fbuf = f_name_buf();
3141 int len = strlen(f->dirname);
3142 memcpy(fbuf, f->dirname, len);
3144 strlcpy(fbuf + len + 1, f->basename, MAXPATHLEN - (len + 1));
3146 strlcpy(fbuf, f->basename, MAXPATHLEN);
3151 /* Do a non-recursive scan of the named directory, possibly ignoring all
3152 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
3153 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
3154 * buffer (the functions we call will append names onto the end, but the old
3155 * dir value will be restored on exit). */
3156 struct file_list *get_dirlist(char *dirname, int dlen, int ignore_filter_rules)
3158 struct file_list *dirlist;
3159 char dirbuf[MAXPATHLEN];
3160 int save_recurse = recurse;
3161 int save_xfer_dirs = xfer_dirs;
3162 int save_prune_empty_dirs = prune_empty_dirs;
3165 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
3166 if (dlen >= MAXPATHLEN)
3171 dirlist = flist_new(FLIST_TEMP, "get_dirlist");
3175 send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen, FLAG_CONTENT_DIR);
3176 xfer_dirs = save_xfer_dirs;
3177 recurse = save_recurse;
3178 if (INFO_GTE(PROGRESS, 1))
3179 flist_count_offset += dirlist->used;
3181 prune_empty_dirs = 0;
3182 dirlist->sorted = dirlist->files;
3183 flist_sort_and_clean(dirlist, 0);
3184 prune_empty_dirs = save_prune_empty_dirs;
3186 if (DEBUG_GTE(FLIST, 3))
3187 output_flist(dirlist);