2 Copyright (C) Andrew Tridgell 1996
3 Copyright (C) Paul Mackerras 1996
4 Copyright (C) 2001, 2002 by Martin Pool <mbp@samba.org>
6 This program is free software; you can redistribute it and/or modify
7 it under the terms of the GNU General Public License as published by
8 the Free Software Foundation; either version 2 of the License, or
9 (at your option) any later version.
11 This program is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
16 You should have received a copy of the GNU General Public License
17 along with this program; if not, write to the Free Software
18 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
22 * Generate and receive file lists
24 * @sa http://lists.samba.org/pipermail/rsync/2000-June/002351.html
37 extern int do_progress;
38 extern int always_checksum;
40 extern int ignore_errors;
41 extern int numeric_ids;
44 extern int filesfrom_fd;
45 extern int one_file_system;
46 extern int keep_dirlinks;
47 extern int preserve_links;
48 extern int preserve_hard_links;
49 extern int preserve_perms;
50 extern int preserve_devices;
51 extern int preserve_uid;
52 extern int preserve_gid;
53 extern int relative_paths;
54 extern int implied_dirs;
55 extern int copy_links;
56 extern int copy_unsafe_links;
57 extern int protocol_version;
58 extern int sanitize_paths;
59 extern int orig_umask;
60 extern struct stats stats;
61 extern struct file_list *the_file_list;
63 extern char curr_dir[MAXPATHLEN];
65 extern struct filter_list_struct filter_list;
66 extern struct filter_list_struct server_filter_list;
69 dev_t filesystem_dev; /* used to implement -x */
71 static char empty_sum[MD4_SUM_LENGTH];
72 static int flist_count_offset;
73 static unsigned int file_struct_len;
74 static struct file_list *sorting_flist;
76 static void clean_flist(struct file_list *flist, int strip_root, int no_dups);
77 static void output_flist(struct file_list *flist);
83 /* Figure out how big the file_struct is without trailing padding */
84 file_struct_len = offsetof(struct file_struct, flags) + sizeof f.flags;
88 static int show_filelist_p(void)
90 return verbose && xfer_dirs && !am_server;
93 static void start_filelist_progress(char *kind)
95 rprintf(FINFO, "%s ... ", kind);
96 if (verbose > 1 || do_progress)
102 static void emit_filelist_progress(int count)
104 rprintf(FINFO, " %d files...\r", count);
108 static void maybe_emit_filelist_progress(int count)
110 if (do_progress && show_filelist_p() && (count % 100) == 0)
111 emit_filelist_progress(count);
115 static void finish_filelist_progress(const struct file_list *flist)
118 /* This overwrites the progress line */
119 rprintf(FINFO, "%d file%sto consider\n",
120 flist->count, flist->count == 1 ? " " : "s ");
122 rprintf(FINFO, "done\n");
125 void show_flist_stats(void)
131 static void list_file_entry(struct file_struct *f)
136 /* this can happen if duplicate names were removed */
140 permstring(perms, f->mode);
143 if (preserve_links && S_ISLNK(f->mode)) {
144 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
146 (double)f->length, timestring(f->modtime),
147 safe_fname(f_name(f)), safe_fname(f->u.link));
151 rprintf(FINFO, "%s %11.0f %s %s\n",
153 (double)f->length, timestring(f->modtime),
154 safe_fname(f_name(f)));
160 * Stat either a symlink or its referent, depending on the settings of
161 * copy_links, copy_unsafe_links, etc.
163 * @retval -1 on error
165 * @retval 0 for success
167 * @post If @p path is a symlink, then @p linkbuf (of size @c
168 * MAXPATHLEN) contains the symlink target.
170 * @post @p buffer contains information about the link or the
171 * referrent as appropriate, if they exist.
173 static int readlink_stat(const char *path, STRUCT_STAT *buffer, char *linkbuf)
177 return do_stat(path, buffer);
178 if (link_stat(path, buffer, 0) < 0)
180 if (S_ISLNK(buffer->st_mode)) {
181 int l = readlink((char *)path, linkbuf, MAXPATHLEN - 1);
185 if (copy_unsafe_links && unsafe_symlink(linkbuf, path)) {
187 rprintf(FINFO,"copying unsafe symlink \"%s\" -> \"%s\"\n",
188 safe_fname(path), safe_fname(linkbuf));
190 return do_stat(path, buffer);
195 return do_stat(path, buffer);
199 int link_stat(const char *path, STRUCT_STAT *buffer, int follow_dirlinks)
203 return do_stat(path, buffer);
204 if (do_lstat(path, buffer) < 0)
206 if (follow_dirlinks && S_ISLNK(buffer->st_mode)) {
208 if (do_stat(path, &st) == 0 && S_ISDIR(st.st_mode))
213 return do_stat(path, buffer);
217 /* This function is used to check if a file should be included/excluded
218 * from the list of files based on its name and type etc. The value of
219 * filter_level is set to either SERVER_FILTERS or ALL_FILTERS. */
220 static int is_excluded(char *fname, int is_dir, int filter_level)
222 #if 0 /* This currently never happens, so avoid a useless compare. */
223 if (filter_level == NO_FILTERS)
227 /* never exclude '.', even if somebody does --exclude '*' */
228 if (fname[0] == '.' && !fname[1])
230 /* Handle the -R version of the '.' dir. */
231 if (fname[0] == '/') {
232 int len = strlen(fname);
233 if (fname[len-1] == '.' && fname[len-2] == '/')
237 if (server_filter_list.head
238 && check_filter(&server_filter_list, fname, is_dir) < 0)
240 if (filter_level != ALL_FILTERS)
243 && check_filter(&filter_list, fname, is_dir) < 0)
248 static int to_wire_mode(mode_t mode)
251 if (S_ISLNK(mode) && (_S_IFLNK != 0120000))
252 return (mode & ~(_S_IFMT)) | 0120000;
257 static mode_t from_wire_mode(int mode)
259 if ((mode & (_S_IFMT)) == 0120000 && (_S_IFLNK != 0120000))
260 return (mode & ~(_S_IFMT)) | _S_IFLNK;
265 static void send_directory(int f, struct file_list *flist,
266 char *fbuf, int len);
268 static char *flist_dir;
269 static int flist_dir_len;
273 * Make sure @p flist is big enough to hold at least @p flist->count
276 void flist_expand(struct file_list *flist)
278 struct file_struct **new_ptr;
280 if (flist->count < flist->malloced)
283 if (flist->malloced < FLIST_START)
284 flist->malloced = FLIST_START;
285 else if (flist->malloced >= FLIST_LINEAR)
286 flist->malloced += FLIST_LINEAR;
288 flist->malloced *= 2;
291 * In case count jumped or we are starting the list
292 * with a known size just set it.
294 if (flist->malloced < flist->count)
295 flist->malloced = flist->count;
297 new_ptr = realloc_array(flist->files, struct file_struct *,
300 if (verbose >= 2 && flist->malloced != FLIST_START) {
301 rprintf(FINFO, "[%s] expand file_list to %.0f bytes, did%s move\n",
303 (double)sizeof flist->files[0] * flist->malloced,
304 (new_ptr == flist->files) ? " not" : "");
307 flist->files = new_ptr;
310 out_of_memory("flist_expand");
313 void send_file_entry(struct file_struct *file, int f, unsigned short base_flags)
315 unsigned short flags;
316 static time_t modtime;
320 static uint32 rdev_major;
323 static char lastname[MAXPATHLEN];
324 char fname[MAXPATHLEN];
332 modtime = 0, mode = 0;
333 dev = 0, rdev = makedev(0, 0);
340 io_write_phase = "send_file_entry";
342 f_name_to(file, fname);
346 if (file->mode == mode)
347 flags |= XMIT_SAME_MODE;
350 if (preserve_devices) {
351 if (protocol_version < 28) {
352 if (IS_DEVICE(mode)) {
353 if (file->u.rdev == rdev)
354 flags |= XMIT_SAME_RDEV_pre28;
358 rdev = makedev(0, 0);
359 } else if (IS_DEVICE(mode)) {
361 if ((uint32)major(rdev) == rdev_major)
362 flags |= XMIT_SAME_RDEV_MAJOR;
364 rdev_major = major(rdev);
365 if ((uint32)minor(rdev) <= 0xFFu)
366 flags |= XMIT_RDEV_MINOR_IS_SMALL;
369 if (file->uid == uid)
370 flags |= XMIT_SAME_UID;
373 if (file->gid == gid)
374 flags |= XMIT_SAME_GID;
377 if (file->modtime == modtime)
378 flags |= XMIT_SAME_TIME;
380 modtime = file->modtime;
382 #ifdef SUPPORT_HARD_LINKS
383 if (file->link_u.idev) {
384 if (file->F_DEV == dev) {
385 if (protocol_version >= 28)
386 flags |= XMIT_SAME_DEV;
389 flags |= XMIT_HAS_IDEV_DATA;
394 lastname[l1] && (fname[l1] == lastname[l1]) && (l1 < 255);
396 l2 = strlen(fname+l1);
399 flags |= XMIT_SAME_NAME;
401 flags |= XMIT_LONG_NAME;
403 /* We must make sure we don't send a zero flag byte or the
404 * other end will terminate the flist transfer. Note that
405 * the use of XMIT_TOP_DIR on a non-dir has no meaning, so
406 * it's harmless way to add a bit to the first flag byte. */
407 if (protocol_version >= 28) {
408 if (!flags && !S_ISDIR(mode))
409 flags |= XMIT_TOP_DIR;
410 if ((flags & 0xFF00) || !flags) {
411 flags |= XMIT_EXTENDED_FLAGS;
412 write_byte(f, flags);
413 write_byte(f, flags >> 8);
415 write_byte(f, flags);
417 if (!(flags & 0xFF) && !S_ISDIR(mode))
418 flags |= XMIT_TOP_DIR;
420 flags |= XMIT_LONG_NAME;
421 write_byte(f, flags);
423 if (flags & XMIT_SAME_NAME)
425 if (flags & XMIT_LONG_NAME)
429 write_buf(f, fname + l1, l2);
431 write_longint(f, file->length);
432 if (!(flags & XMIT_SAME_TIME))
433 write_int(f, modtime);
434 if (!(flags & XMIT_SAME_MODE))
435 write_int(f, to_wire_mode(mode));
436 if (preserve_uid && !(flags & XMIT_SAME_UID)) {
441 if (preserve_gid && !(flags & XMIT_SAME_GID)) {
446 if (preserve_devices && IS_DEVICE(mode)) {
447 if (protocol_version < 28) {
448 if (!(flags & XMIT_SAME_RDEV_pre28))
449 write_int(f, (int)rdev);
451 if (!(flags & XMIT_SAME_RDEV_MAJOR))
452 write_int(f, major(rdev));
453 if (flags & XMIT_RDEV_MINOR_IS_SMALL)
454 write_byte(f, minor(rdev));
456 write_int(f, minor(rdev));
461 if (preserve_links && S_ISLNK(mode)) {
462 int len = strlen(file->u.link);
464 write_buf(f, file->u.link, len);
468 #ifdef SUPPORT_HARD_LINKS
469 if (flags & XMIT_HAS_IDEV_DATA) {
470 if (protocol_version < 26) {
471 /* 32-bit dev_t and ino_t */
473 write_int(f, file->F_INODE);
475 /* 64-bit dev_t and ino_t */
476 if (!(flags & XMIT_SAME_DEV))
477 write_longint(f, dev);
478 write_longint(f, file->F_INODE);
483 if (always_checksum) {
487 else if (protocol_version < 28) {
488 /* Prior to 28, we sent a useless set of nulls. */
494 protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
498 strlcpy(lastname, fname, MAXPATHLEN);
500 io_write_phase = "unknown";
505 static struct file_struct *receive_file_entry(struct file_list *flist,
506 unsigned short flags, int f)
508 static time_t modtime;
512 static uint32 rdev_major;
515 static char lastname[MAXPATHLEN], *lastdir;
516 static int lastdir_depth, lastdir_len = -1;
517 static unsigned int del_hier_name_len = 0;
518 static int in_del_hier = 0;
519 char thisname[MAXPATHLEN];
520 unsigned int l1 = 0, l2 = 0;
521 int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
523 char *basename, *dirname, *bp;
524 struct file_struct *file;
527 modtime = 0, mode = 0;
528 dev = 0, rdev = makedev(0, 0);
537 if (flags & XMIT_SAME_NAME)
540 if (flags & XMIT_LONG_NAME)
545 if (l2 >= MAXPATHLEN - l1) {
547 "overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
548 flags, l1, l2, safe_fname(lastname));
549 overflow_exit("receive_file_entry");
552 strlcpy(thisname, lastname, l1 + 1);
553 read_sbuf(f, &thisname[l1], l2);
554 thisname[l1 + l2] = 0;
556 strlcpy(lastname, thisname, MAXPATHLEN);
558 clean_fname(thisname, 0);
561 sanitize_path(thisname, thisname, "", 0);
563 if ((basename = strrchr(thisname, '/')) != NULL) {
564 dirname_len = ++basename - thisname; /* counts future '\0' */
565 if (lastdir_len == dirname_len - 1
566 && strncmp(thisname, lastdir, lastdir_len) == 0) {
568 dirname_len = 0; /* indicates no copy is needed */
576 basename_len = strlen(basename) + 1; /* count the '\0' */
578 file_length = read_longint(f);
579 if (!(flags & XMIT_SAME_TIME))
580 modtime = (time_t)read_int(f);
581 if (!(flags & XMIT_SAME_MODE))
582 mode = from_wire_mode(read_int(f));
584 if (preserve_uid && !(flags & XMIT_SAME_UID))
585 uid = (uid_t)read_int(f);
586 if (preserve_gid && !(flags & XMIT_SAME_GID))
587 gid = (gid_t)read_int(f);
589 if (preserve_devices) {
590 if (protocol_version < 28) {
591 if (IS_DEVICE(mode)) {
592 if (!(flags & XMIT_SAME_RDEV_pre28))
593 rdev = (dev_t)read_int(f);
595 rdev = makedev(0, 0);
596 } else if (IS_DEVICE(mode)) {
598 if (!(flags & XMIT_SAME_RDEV_MAJOR))
599 rdev_major = read_int(f);
600 if (flags & XMIT_RDEV_MINOR_IS_SMALL)
601 rdev_minor = read_byte(f);
603 rdev_minor = read_int(f);
604 rdev = makedev(rdev_major, rdev_minor);
609 if (preserve_links && S_ISLNK(mode)) {
610 linkname_len = read_int(f) + 1; /* count the '\0' */
611 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
612 rprintf(FERROR, "overflow: linkname_len=%d\n",
614 overflow_exit("receive_file_entry");
621 sum_len = always_checksum && S_ISREG(mode) ? MD4_SUM_LENGTH : 0;
623 alloc_len = file_struct_len + dirname_len + basename_len
624 + linkname_len + sum_len;
625 bp = pool_alloc(flist->file_pool, alloc_len, "receive_file_entry");
627 file = (struct file_struct *)bp;
628 memset(bp, 0, file_struct_len);
629 bp += file_struct_len;
632 file->modtime = modtime;
633 file->length = file_length;
639 file->dirname = lastdir = bp;
640 lastdir_len = dirname_len - 1;
641 memcpy(bp, dirname, dirname_len - 1);
644 lastdir_depth = count_dir_elements(lastdir);
645 file->dir.depth = lastdir_depth + 1;
646 } else if (dirname) {
647 file->dirname = dirname; /* we're reusing lastname */
648 file->dir.depth = lastdir_depth + 1;
653 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
655 if (flags & XMIT_TOP_DIR) {
657 del_hier_name_len = file->dir.depth == 0 ? 0 : l1 + l2;
658 if (relative_paths && del_hier_name_len > 2
659 && basename_len == 1+1 && *basename == '.')
660 del_hier_name_len -= 2;
661 file->flags |= FLAG_TOP_DIR | FLAG_DEL_HERE;
662 } else if (in_del_hier) {
663 if (!relative_paths || !del_hier_name_len
664 || (l1 >= del_hier_name_len
665 && thisname[del_hier_name_len] == '/'))
666 file->flags |= FLAG_DEL_HERE;
673 memcpy(bp, basename, basename_len);
676 if (preserve_devices && IS_DEVICE(mode))
682 read_sbuf(f, bp, linkname_len - 1);
684 sanitize_path(bp, bp, "", lastdir_depth);
689 #ifdef SUPPORT_HARD_LINKS
690 if (preserve_hard_links && protocol_version < 28 && S_ISREG(mode))
691 flags |= XMIT_HAS_IDEV_DATA;
692 if (flags & XMIT_HAS_IDEV_DATA) {
694 if (protocol_version < 26) {
698 if (!(flags & XMIT_SAME_DEV))
699 dev = read_longint(f);
700 inode = read_longint(f);
702 if (flist->hlink_pool) {
703 file->link_u.idev = pool_talloc(flist->hlink_pool,
704 struct idev, 1, "inode_table");
705 file->F_INODE = inode;
711 if (always_checksum) {
714 file->u.sum = sum = bp;
716 } else if (protocol_version < 28) {
717 /* Prior to 28, we get a useless set of nulls. */
723 protocol_version < 21 ? 2 : MD4_SUM_LENGTH);
727 if (!preserve_perms) {
728 /* set an appropriate set of permissions based on original
729 * permissions and umask. This emulates what GNU cp does */
730 file->mode &= ~orig_umask;
738 * Create a file_struct for a named file by reading its stat()
739 * information and performing extensive checks against global
742 * @return the new file, or NULL if there was an error or this file
743 * should be excluded.
745 * @todo There is a small optimization opportunity here to avoid
746 * stat()ing the file in some circumstances, which has a certain cost.
747 * We are called immediately after doing readdir(), and so we may
748 * already know the d_type of the file. We could for example avoid
749 * statting directories if we're not recursing, but this is not a very
750 * important case. Some systems may not have d_type.
752 struct file_struct *make_file(char *fname, struct file_list *flist,
755 static char *lastdir;
756 static int lastdir_len = -1;
757 struct file_struct *file;
759 char sum[SUM_LENGTH];
760 char thisname[MAXPATHLEN];
761 char linkname[MAXPATHLEN];
762 int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
763 char *basename, *dirname, *bp;
764 unsigned short flags = 0;
766 if (!flist || !flist->count) /* Ignore lastdir when invalid. */
769 if (strlcpy(thisname, fname, sizeof thisname)
770 >= sizeof thisname - flist_dir_len) {
771 rprintf(FINFO, "skipping overly long name: %s\n",
775 clean_fname(thisname, 0);
777 sanitize_path(thisname, thisname, "", 0);
779 memset(sum, 0, SUM_LENGTH);
781 if (readlink_stat(thisname, &st, linkname) != 0) {
782 int save_errno = errno;
783 /* See if file is excluded before reporting an error. */
784 if (filter_level != NO_FILTERS
785 && is_excluded(thisname, 0, filter_level))
787 if (save_errno == ENOENT) {
789 /* Avoid "vanished" error if symlink points nowhere. */
790 if (copy_links && do_lstat(thisname, &st) == 0
791 && S_ISLNK(st.st_mode)) {
792 io_error |= IOERR_GENERAL;
793 rprintf(FERROR, "symlink has no referent: %s\n",
794 full_fname(thisname));
798 enum logcode c = am_daemon && protocol_version < 28
800 io_error |= IOERR_VANISHED;
801 rprintf(c, "file has vanished: %s\n",
802 full_fname(thisname));
805 io_error |= IOERR_GENERAL;
806 rsyserr(FERROR, save_errno, "readlink %s failed",
807 full_fname(thisname));
812 /* backup.c calls us with filter_level set to NO_FILTERS. */
813 if (filter_level == NO_FILTERS)
816 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
817 rprintf(FINFO, "skipping directory %s\n", safe_fname(thisname));
821 /* We only care about directories because we need to avoid recursing
822 * into a mount-point directory, not to avoid copying a symlinked
823 * file if -L (or similar) was specified. */
824 if (one_file_system && st.st_dev != filesystem_dev
825 && S_ISDIR(st.st_mode))
826 flags |= FLAG_MOUNT_POINT;
828 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level))
831 if (lp_ignore_nonreadable(module_id)) {
833 if (!S_ISLNK(st.st_mode))
835 if (access(thisname, R_OK) != 0)
842 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
843 who_am_i(), safe_fname(thisname), filter_level);
846 if ((basename = strrchr(thisname, '/')) != NULL) {
847 dirname_len = ++basename - thisname; /* counts future '\0' */
848 if (lastdir_len == dirname_len - 1
849 && strncmp(thisname, lastdir, lastdir_len) == 0) {
851 dirname_len = 0; /* indicates no copy is needed */
859 basename_len = strlen(basename) + 1; /* count the '\0' */
862 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
867 sum_len = always_checksum && S_ISREG(st.st_mode) ? MD4_SUM_LENGTH : 0;
869 alloc_len = file_struct_len + dirname_len + basename_len
870 + linkname_len + sum_len;
872 bp = pool_alloc(flist->file_pool, alloc_len,
873 "receive_file_entry");
875 if (!(bp = new_array(char, alloc_len)))
876 out_of_memory("receive_file_entry");
879 file = (struct file_struct *)bp;
880 memset(bp, 0, file_struct_len);
881 bp += file_struct_len;
884 file->modtime = st.st_mtime;
885 file->length = st.st_size;
886 file->mode = st.st_mode;
887 file->uid = st.st_uid;
888 file->gid = st.st_gid;
890 #ifdef SUPPORT_HARD_LINKS
891 if (flist && flist->hlink_pool) {
892 if (protocol_version < 28) {
893 if (S_ISREG(st.st_mode))
894 file->link_u.idev = pool_talloc(
895 flist->hlink_pool, struct idev, 1,
898 if (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
899 file->link_u.idev = pool_talloc(
900 flist->hlink_pool, struct idev, 1,
904 if (file->link_u.idev) {
905 file->F_DEV = st.st_dev;
906 file->F_INODE = st.st_ino;
911 file->dirname = lastdir = bp;
912 lastdir_len = dirname_len - 1;
913 memcpy(bp, dirname, dirname_len - 1);
917 file->dirname = dirname;
920 memcpy(bp, basename, basename_len);
923 #ifdef HAVE_STRUCT_STAT_ST_RDEV
924 if (preserve_devices && IS_DEVICE(st.st_mode))
925 file->u.rdev = st.st_rdev;
931 memcpy(bp, linkname, linkname_len);
938 file_checksum(thisname, bp, st.st_size);
942 file->dir.root = flist_dir;
944 /* This code is only used by the receiver when it is building
945 * a list of files for a delete pass. */
946 if (keep_dirlinks && linkname_len && flist) {
948 int save_mode = file->mode;
949 file->mode = S_IFDIR; /* find a directory w/our name */
950 if (flist_find(the_file_list, file) >= 0
951 && do_stat(thisname, &st2) == 0 && S_ISDIR(st2.st_mode)) {
952 file->modtime = st2.st_mtime;
953 file->length = st2.st_size;
954 file->mode = st2.st_mode;
955 file->uid = st2.st_uid;
956 file->gid = st2.st_gid;
959 file->mode = save_mode;
962 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
963 stats.total_size += st.st_size;
969 static struct file_struct *send_file_name(int f, struct file_list *flist,
970 char *fname, unsigned short base_flags)
972 struct file_struct *file;
974 file = make_file(fname, flist, f == -2 ? SERVER_FILTERS : ALL_FILTERS);
978 maybe_emit_filelist_progress(flist->count + flist_count_offset);
982 if (file->basename[0]) {
983 flist->files[flist->count++] = file;
984 send_file_entry(file, f, base_flags);
989 static void send_if_directory(int f, struct file_list *flist,
990 struct file_struct *file)
992 char fbuf[MAXPATHLEN];
994 if (S_ISDIR(file->mode)
995 && !(file->flags & FLAG_MOUNT_POINT) && f_name_to(file, fbuf)) {
997 unsigned int len = strlen(fbuf);
998 if (len > 1 && fbuf[len-1] == '/')
1000 if (len >= MAXPATHLEN - 1) {
1001 io_error |= IOERR_GENERAL;
1002 rprintf(FERROR, "skipping long-named directory: %s\n",
1006 save_filters = push_local_filters(fbuf, len);
1007 send_directory(f, flist, fbuf, len);
1008 pop_local_filters(save_filters);
1013 /* This function is normally called by the sender, but the receiving side also
1014 * calls it from get_dirlist() with f set to -1 so that we just construct the
1015 * file list in memory without sending it over the wire. Also, get_dirlist()
1016 * might call this with f set to -2, which also indicates that local filter
1017 * rules should be ignored. */
1018 static void send_directory(int f, struct file_list *flist,
1019 char *fbuf, int len)
1025 int start = flist->count;
1027 if (!(d = opendir(fbuf))) {
1028 io_error |= IOERR_GENERAL;
1029 rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
1034 if (len != 1 || *fbuf != '/')
1037 remainder = MAXPATHLEN - (p - fbuf);
1039 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1040 char *dname = d_name(di);
1041 if (dname[0] == '.' && (dname[1] == '\0'
1042 || (dname[1] == '.' && dname[2] == '\0')))
1044 if (strlcpy(p, dname, remainder) < remainder)
1045 send_file_name(f, flist, fbuf, 0);
1047 io_error |= IOERR_GENERAL;
1049 "cannot send long-named file %s\n",
1057 io_error |= IOERR_GENERAL;
1058 rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
1064 int i, end = flist->count - 1;
1065 for (i = start; i <= end; i++)
1066 send_if_directory(f, flist, flist->files[i]);
1071 struct file_list *send_file_list(int f, int argc, char *argv[])
1075 char *p, *dir, olddir[sizeof curr_dir];
1076 char lastpath[MAXPATHLEN] = "";
1077 struct file_list *flist;
1078 struct timeval start_tv, end_tv;
1082 if (show_filelist_p())
1083 start_filelist_progress("building file list");
1085 start_write = stats.total_written;
1086 gettimeofday(&start_tv, NULL);
1088 flist = flist_new(WITH_HLINK, "send_file_list");
1090 io_start_buffering_out();
1091 if (filesfrom_fd >= 0) {
1092 if (argv[0] && !push_dir(argv[0])) {
1093 rsyserr(FERROR, errno, "push_dir %s failed",
1094 full_fname(argv[0]));
1095 exit_cleanup(RERR_FILESELECT);
1101 struct file_struct *file;
1102 char fname2[MAXPATHLEN];
1103 char *fname = fname2;
1107 if (read_filesfrom_line(filesfrom_fd, fname) == 0)
1109 sanitize_path(fname, fname, "", 0);
1113 strlcpy(fname, *argv++, MAXPATHLEN);
1115 sanitize_path(fname, fname, "", 0);
1119 if (!l || fname[l - 1] == '/') {
1120 if (l == 2 && fname[0] == '.') {
1121 /* Turn "./" into just "." rather than "./." */
1124 if (l + 1 >= MAXPATHLEN)
1125 overflow_exit("send_file_list");
1130 } else if (l > 1 && fname[l-1] == '.' && fname[l-2] == '.'
1131 && (l == 2 || fname[l-3] == '/')) {
1132 if (l + 2 >= MAXPATHLEN)
1133 overflow_exit("send_file_list");
1139 is_dot_dir = fname[l-1] == '.'
1140 && (l == 1 || fname[l-2] == '/');
1143 if (link_stat(fname, &st, keep_dirlinks) != 0) {
1144 io_error |= IOERR_GENERAL;
1145 rsyserr(FERROR, errno, "link_stat %s failed",
1150 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
1151 rprintf(FINFO, "skipping directory %s\n",
1159 if (!relative_paths) {
1160 p = strrchr(fname, '/');
1169 } else if (implied_dirs && (p=strrchr(fname,'/')) && p != fname) {
1170 /* this ensures we send the intermediate directories,
1171 thus getting their permissions right */
1172 char *lp = lastpath, *fn = fname, *slash = fname;
1174 /* Skip any initial directories in our path that we
1175 * have in common with lastpath. */
1176 while (*fn && *lp == *fn) {
1182 if (fn != p || (*lp && *lp != '/')) {
1183 int save_copy_links = copy_links;
1184 int save_xfer_dirs = xfer_dirs;
1185 copy_links = copy_unsafe_links;
1187 while ((slash = strchr(slash+1, '/')) != 0) {
1189 send_file_name(f, flist, fname, 0);
1192 copy_links = save_copy_links;
1193 xfer_dirs = save_xfer_dirs;
1195 strlcpy(lastpath, fname, sizeof lastpath);
1204 static char *lastdir;
1205 static int lastdir_len;
1207 strcpy(olddir, curr_dir); /* can't overflow */
1209 if (!push_dir(dir)) {
1210 io_error |= IOERR_GENERAL;
1211 rsyserr(FERROR, errno, "push_dir %s failed",
1216 if (lastdir && strcmp(lastdir, dir) == 0) {
1217 flist_dir = lastdir;
1218 flist_dir_len = lastdir_len;
1220 flist_dir = lastdir = strdup(dir);
1221 flist_dir_len = lastdir_len = strlen(dir);
1225 if (one_file_system)
1226 filesystem_dev = st.st_dev;
1228 if ((file = send_file_name(f, flist, fname, XMIT_TOP_DIR))) {
1229 if (recurse || (xfer_dirs && is_dot_dir))
1230 send_if_directory(f, flist, file);
1236 if (!pop_dir(olddir)) {
1237 rsyserr(FERROR, errno, "pop_dir %s failed",
1239 exit_cleanup(RERR_FILESELECT);
1244 gettimeofday(&end_tv, NULL);
1245 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1246 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1247 if (stats.flist_buildtime == 0)
1248 stats.flist_buildtime = 1;
1251 send_file_entry(NULL, f, 0);
1253 if (show_filelist_p())
1254 finish_filelist_progress(flist);
1256 gettimeofday(&end_tv, NULL);
1257 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1258 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1260 if (flist->hlink_pool) {
1261 pool_destroy(flist->hlink_pool);
1262 flist->hlink_pool = NULL;
1265 /* Sort the list without removing any duplicates. This allows the
1266 * receiving side to ask for any name they like, which gives us the
1267 * flexibility to change the way we unduplicate names in the future
1268 * without causing a compatibility problem with older versions. */
1269 clean_flist(flist, 0, 0);
1271 /* Now send the uid/gid list. This was introduced in
1272 * protocol version 15 */
1275 /* send the io_error flag */
1276 write_int(f, lp_ignore_errors(module_id) ? 0 : io_error);
1279 stats.flist_size = stats.total_written - start_write;
1280 stats.num_files = flist->count;
1283 output_flist(flist);
1286 rprintf(FINFO, "send_file_list done\n");
1292 struct file_list *recv_file_list(int f)
1294 struct file_list *flist;
1295 unsigned short flags;
1298 if (show_filelist_p())
1299 start_filelist_progress("receiving file list");
1301 start_read = stats.total_read;
1303 flist = flist_new(WITH_HLINK, "recv_file_list");
1306 flist->malloced = 1000;
1307 flist->files = new_array(struct file_struct *, flist->malloced);
1312 while ((flags = read_byte(f)) != 0) {
1313 struct file_struct *file;
1315 flist_expand(flist);
1317 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
1318 flags |= read_byte(f) << 8;
1319 file = receive_file_entry(flist, flags, f);
1321 if (S_ISREG(file->mode))
1322 stats.total_size += file->length;
1324 flist->files[flist->count++] = file;
1326 maybe_emit_filelist_progress(flist->count);
1329 rprintf(FINFO, "recv_file_name(%s)\n",
1330 safe_fname(f_name(file)));
1333 receive_file_entry(NULL, 0, 0); /* Signal that we're done. */
1336 rprintf(FINFO, "received %d names\n", flist->count);
1338 if (show_filelist_p())
1339 finish_filelist_progress(flist);
1341 clean_flist(flist, relative_paths, 1);
1344 /* Now send the uid/gid list. This was introduced in
1345 * protocol version 15 */
1346 recv_uid_list(f, flist);
1348 /* Recv the io_error flag */
1349 if (lp_ignore_errors(module_id) || ignore_errors)
1352 io_error |= read_int(f);
1356 output_flist(flist);
1360 for (i = 0; i < flist->count; i++)
1361 list_file_entry(flist->files[i]);
1365 rprintf(FINFO, "recv_file_list done\n");
1367 stats.flist_size = stats.total_read - start_read;
1368 stats.num_files = flist->count;
1373 out_of_memory("recv_file_list");
1374 return NULL; /* not reached */
1378 static int file_compare(struct file_struct **file1, struct file_struct **file2)
1380 return f_name_cmp(*file1, *file2);
1384 /* Search for an identically-named item in the file list. Note that the
1385 * items must agree in their directory-ness, or no match is returned. */
1386 int flist_find(struct file_list *flist, struct file_struct *f)
1388 int low = flist->low, high = flist->high;
1389 int ret, mid, mid_up;
1391 while (low <= high) {
1392 mid = (low + high) / 2;
1393 for (mid_up = mid; !flist->files[mid_up]->basename; mid_up++) {}
1395 ret = f_name_cmp(flist->files[mid_up], f);
1399 if (protocol_version < 29
1400 && S_ISDIR(flist->files[mid_up]->mode)
1401 != S_ISDIR(f->mode))
1415 * Free up any resources a file_struct has allocated
1416 * and clear the file.
1418 void clear_file(int i, struct file_list *flist)
1420 if (flist->hlink_pool && flist->files[i]->link_u.idev)
1421 pool_free(flist->hlink_pool, 0, flist->files[i]->link_u.idev);
1422 memset(flist->files[i], 0, file_struct_len);
1427 * allocate a new file list
1429 struct file_list *flist_new(int with_hlink, char *msg)
1431 struct file_list *flist;
1433 flist = new(struct file_list);
1437 memset(flist, 0, sizeof (struct file_list));
1439 if (!(flist->file_pool = pool_create(FILE_EXTENT, 0,
1440 out_of_memory, POOL_INTERN)))
1443 #ifdef SUPPORT_HARD_LINKS
1444 if (with_hlink && preserve_hard_links) {
1445 if (!(flist->hlink_pool = pool_create(HLINK_EXTENT,
1446 sizeof (struct idev), out_of_memory, POOL_INTERN)))
1455 * free up all elements in a flist
1457 void flist_free(struct file_list *flist)
1459 pool_destroy(flist->file_pool);
1460 pool_destroy(flist->hlink_pool);
1467 * This routine ensures we don't have any duplicate names in our file list.
1468 * duplicate names can cause corruption because of the pipelining
1470 static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
1476 if (flist->count == 0) {
1481 sorting_flist = flist;
1482 qsort(flist->files, flist->count,
1483 sizeof flist->files[0], (int (*)())file_compare);
1484 sorting_flist = NULL;
1486 for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
1487 if (flist->files[i]->basename) {
1492 flist->low = prev_i;
1493 while (++i < flist->count) {
1495 struct file_struct *file = flist->files[i];
1497 if (!file->basename)
1499 if (f_name_cmp(file, flist->files[prev_i]) == 0)
1501 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
1502 int save_mode = file->mode;
1503 /* Make sure that this directory doesn't duplicate a
1504 * non-directory earlier in the list. */
1505 flist->high = prev_i;
1506 file->mode = S_IFREG;
1507 j = flist_find(flist, file);
1508 file->mode = save_mode;
1512 struct file_struct *fp = flist->files[j];
1514 /* If one is a dir and the other is not, we want to
1515 * keep the dir because it might have contents in the
1517 if (S_ISDIR(file->mode) != S_ISDIR(fp->mode)) {
1518 if (S_ISDIR(file->mode))
1524 if (verbose > 1 && !am_server) {
1526 "removing duplicate name %s from file list (%d)\n",
1527 safe_fname(f_name(file)), drop);
1529 /* Make sure that if we unduplicate '.', that we don't
1530 * lose track of a user-specified top directory. */
1531 flist->files[keep]->flags |= flist->files[drop]->flags
1532 & (FLAG_TOP_DIR|FLAG_DEL_HERE);
1534 clear_file(drop, flist);
1537 if (flist->low == drop) {
1539 j < i && !flist->files[j]->basename;
1548 flist->high = no_dups ? prev_i : flist->count - 1;
1551 /* We need to strip off the leading slashes for relative
1552 * paths, but this must be done _after_ the sorting phase. */
1553 for (i = flist->low; i <= flist->high; i++) {
1554 struct file_struct *file = flist->files[i];
1558 if (*file->dirname == '/') {
1559 char *s = file->dirname + 1;
1560 while (*s == '/') s++;
1561 memmove(file->dirname, s, strlen(s) + 1);
1564 if (!*file->dirname)
1565 file->dirname = NULL;
1571 static void output_flist(struct file_list *flist)
1573 char uidbuf[16], gidbuf[16], depthbuf[16];
1574 struct file_struct *file;
1575 const char *who = who_am_i();
1578 for (i = 0; i < flist->count; i++) {
1579 file = flist->files[i];
1580 if ((am_root || am_sender) && preserve_uid)
1581 sprintf(uidbuf, " uid=%ld", (long)file->uid);
1584 if (preserve_gid && file->gid != GID_NONE)
1585 sprintf(gidbuf, " gid=%ld", (long)file->gid);
1589 sprintf(depthbuf, "%d", file->dir.depth);
1590 rprintf(FINFO, "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
1591 who, i, am_sender ? NS(file->dir.root) : depthbuf,
1592 file->dirname ? safe_fname(file->dirname) : "",
1593 file->dirname ? "/" : "", NS(file->basename),
1594 S_ISDIR(file->mode) ? "/" : "", (int)file->mode,
1595 (double)file->length, uidbuf, gidbuf, file->flags);
1600 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
1601 enum fnc_type { t_PATH, t_ITEM };
1603 /* Compare the names of two file_struct entities, similar to how strcmp()
1604 * would do if it were operating on the joined strings.
1606 * Some differences beginning with protocol_version 29: (1) directory names
1607 * are compared with an assumed trailing slash so that they compare in a
1608 * way that would cause them to sort immediately prior to any content they
1609 * may have; (2) a directory of any name compares after a non-directory of
1610 * any name at the same depth; (3) a directory with name "." compares prior
1611 * to anything else. These changes mean that a directory and a non-dir
1612 * with the same name will not compare as equal (protocol_version >= 29).
1614 * The dirname component can be an empty string, but the basename component
1615 * cannot (and never is in the current codebase). The basename component
1616 * may be NULL (for a removed item), in which case it is considered to be
1617 * after any existing item. */
1618 int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
1621 const uchar *c1, *c2;
1622 enum fnc_state state1, state2;
1623 enum fnc_type type1, type2;
1624 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
1626 if (!f1 || !f1->basename) {
1627 if (!f2 || !f2->basename)
1631 if (!f2 || !f2->basename)
1634 c1 = (uchar*)f1->dirname;
1635 c2 = (uchar*)f2->dirname;
1639 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
1640 c1 = (uchar*)f1->basename;
1641 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
1643 state1 = s_TRAILING;
1656 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
1657 c2 = (uchar*)f2->basename;
1658 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
1660 state2 = s_TRAILING;
1674 return type1 == t_PATH ? 1 : -1;
1677 if ((dif = (int)*c1++ - (int)*c2++) != 0)
1686 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
1687 c1 = (uchar*)f1->basename;
1688 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
1690 state1 = s_TRAILING;
1696 state1 = s_TRAILING;
1697 if (type1 == t_PATH) {
1706 if (*c2 && type1 != type2)
1707 return type1 == t_PATH ? 1 : -1;
1716 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
1717 c2 = (uchar*)f2->basename;
1718 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
1720 state2 = s_TRAILING;
1726 state2 = s_TRAILING;
1727 if (type2 == t_PATH) {
1739 return type1 == t_PATH ? 1 : -1;
1747 /* Return a copy of the full filename of a flist entry, using the indicated
1748 * buffer. No size-checking is done because we checked the size when creating
1749 * the file_struct entry.
1751 char *f_name_to(struct file_struct *f, char *fbuf)
1753 if (!f || !f->basename)
1757 int len = strlen(f->dirname);
1758 memcpy(fbuf, f->dirname, len);
1760 strcpy(fbuf + len + 1, f->basename);
1762 strcpy(fbuf, f->basename);
1767 /* Like f_name_to(), but we rotate through 5 static buffers of our own. */
1768 char *f_name(struct file_struct *f)
1770 static char names[5][MAXPATHLEN];
1771 static unsigned int n;
1773 n = (n + 1) % (sizeof names / sizeof names[0]);
1775 return f_name_to(f, names[n]);
1779 /* Do a non-recursive scan of the named directory, possibly ignoring all
1780 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
1781 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
1782 * buffer (the functions we call will append names onto the end, but the old
1783 * dir value will be restored on exit). */
1784 struct file_list *get_dirlist(char *dirname, int dlen,
1785 int ignore_filter_rules)
1787 struct file_list *dirlist;
1788 char dirbuf[MAXPATHLEN];
1789 int save_recurse = recurse;
1792 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
1793 if (dlen >= MAXPATHLEN)
1798 dirlist = flist_new(WITHOUT_HLINK, "get_dirlist");
1801 send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen);
1802 recurse = save_recurse;
1804 flist_count_offset += dirlist->count;
1806 clean_flist(dirlist, 0, 0);
1809 output_flist(dirlist);