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);
418 flags |= S_ISDIR(mode) ? XMIT_LONG_NAME : XMIT_TOP_DIR;
419 write_byte(f, flags);
421 if (flags & XMIT_SAME_NAME)
423 if (flags & XMIT_LONG_NAME)
427 write_buf(f, fname + l1, l2);
429 write_longint(f, file->length);
430 if (!(flags & XMIT_SAME_TIME))
431 write_int(f, modtime);
432 if (!(flags & XMIT_SAME_MODE))
433 write_int(f, to_wire_mode(mode));
434 if (preserve_uid && !(flags & XMIT_SAME_UID)) {
439 if (preserve_gid && !(flags & XMIT_SAME_GID)) {
444 if (preserve_devices && IS_DEVICE(mode)) {
445 if (protocol_version < 28) {
446 if (!(flags & XMIT_SAME_RDEV_pre28))
447 write_int(f, (int)rdev);
449 if (!(flags & XMIT_SAME_RDEV_MAJOR))
450 write_int(f, major(rdev));
451 if (flags & XMIT_RDEV_MINOR_IS_SMALL)
452 write_byte(f, minor(rdev));
454 write_int(f, minor(rdev));
459 if (preserve_links && S_ISLNK(mode)) {
460 int len = strlen(file->u.link);
462 write_buf(f, file->u.link, len);
466 #ifdef SUPPORT_HARD_LINKS
467 if (flags & XMIT_HAS_IDEV_DATA) {
468 if (protocol_version < 26) {
469 /* 32-bit dev_t and ino_t */
471 write_int(f, file->F_INODE);
473 /* 64-bit dev_t and ino_t */
474 if (!(flags & XMIT_SAME_DEV))
475 write_longint(f, dev);
476 write_longint(f, file->F_INODE);
481 if (always_checksum && (S_ISREG(mode) || protocol_version < 28)) {
483 int slen = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
487 /* Prior to 28, we sent a useless set of nulls. */
490 write_buf(f, sum, slen);
493 strlcpy(lastname, fname, MAXPATHLEN);
495 io_write_phase = "unknown";
500 static struct file_struct *receive_file_entry(struct file_list *flist,
501 unsigned short flags, int f)
503 static time_t modtime;
507 static uint32 rdev_major;
510 static char lastname[MAXPATHLEN], *lastdir;
511 static int lastdir_depth, lastdir_len = -1;
512 static unsigned int del_hier_name_len = 0;
513 static int in_del_hier = 0;
514 char thisname[MAXPATHLEN];
515 unsigned int l1 = 0, l2 = 0;
516 int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
518 char *basename, *dirname, *bp;
519 struct file_struct *file;
522 modtime = 0, mode = 0;
523 dev = 0, rdev = makedev(0, 0);
532 if (flags & XMIT_SAME_NAME)
535 if (flags & XMIT_LONG_NAME)
540 if (l2 >= MAXPATHLEN - l1) {
542 "overflow: flags=0x%x l1=%d l2=%d lastname=%s\n",
543 flags, l1, l2, safe_fname(lastname));
544 overflow_exit("receive_file_entry");
547 strlcpy(thisname, lastname, l1 + 1);
548 read_sbuf(f, &thisname[l1], l2);
549 thisname[l1 + l2] = 0;
551 strlcpy(lastname, thisname, MAXPATHLEN);
553 clean_fname(thisname, 0);
556 sanitize_path(thisname, thisname, "", 0);
558 if ((basename = strrchr(thisname, '/')) != NULL) {
559 dirname_len = ++basename - thisname; /* counts future '\0' */
560 if (lastdir_len == dirname_len - 1
561 && strncmp(thisname, lastdir, lastdir_len) == 0) {
563 dirname_len = 0; /* indicates no copy is needed */
571 basename_len = strlen(basename) + 1; /* count the '\0' */
573 file_length = read_longint(f);
574 if (!(flags & XMIT_SAME_TIME))
575 modtime = (time_t)read_int(f);
576 if (!(flags & XMIT_SAME_MODE))
577 mode = from_wire_mode(read_int(f));
579 if (preserve_uid && !(flags & XMIT_SAME_UID))
580 uid = (uid_t)read_int(f);
581 if (preserve_gid && !(flags & XMIT_SAME_GID))
582 gid = (gid_t)read_int(f);
584 if (preserve_devices) {
585 if (protocol_version < 28) {
586 if (IS_DEVICE(mode)) {
587 if (!(flags & XMIT_SAME_RDEV_pre28))
588 rdev = (dev_t)read_int(f);
590 rdev = makedev(0, 0);
591 } else if (IS_DEVICE(mode)) {
593 if (!(flags & XMIT_SAME_RDEV_MAJOR))
594 rdev_major = read_int(f);
595 if (flags & XMIT_RDEV_MINOR_IS_SMALL)
596 rdev_minor = read_byte(f);
598 rdev_minor = read_int(f);
599 rdev = makedev(rdev_major, rdev_minor);
604 if (preserve_links && S_ISLNK(mode)) {
605 linkname_len = read_int(f) + 1; /* count the '\0' */
606 if (linkname_len <= 0 || linkname_len > MAXPATHLEN) {
607 rprintf(FERROR, "overflow: linkname_len=%d\n",
609 overflow_exit("receive_file_entry");
616 sum_len = always_checksum && S_ISREG(mode) ? MD4_SUM_LENGTH : 0;
618 alloc_len = file_struct_len + dirname_len + basename_len
619 + linkname_len + sum_len;
620 bp = pool_alloc(flist->file_pool, alloc_len, "receive_file_entry");
622 file = (struct file_struct *)bp;
623 memset(bp, 0, file_struct_len);
624 bp += file_struct_len;
627 file->modtime = modtime;
628 file->length = file_length;
634 file->dirname = lastdir = bp;
635 lastdir_len = dirname_len - 1;
636 memcpy(bp, dirname, dirname_len - 1);
639 lastdir_depth = count_dir_elements(lastdir);
640 file->dir.depth = lastdir_depth + 1;
641 } else if (dirname) {
642 file->dirname = dirname; /* we're reusing lastname */
643 file->dir.depth = lastdir_depth + 1;
648 if (basename_len == 1+1 && *basename == '.') /* +1 for '\0' */
650 if (flags & XMIT_TOP_DIR) {
651 in_del_hier = recurse;
652 del_hier_name_len = file->dir.depth == 0 ? 0 : l1 + l2;
653 if (relative_paths && del_hier_name_len > 2
654 && basename_len == 1+1 && *basename == '.')
655 del_hier_name_len -= 2;
656 file->flags |= FLAG_TOP_DIR | FLAG_DEL_HERE;
657 } else if (in_del_hier) {
658 if (!relative_paths || !del_hier_name_len
659 || (l1 >= del_hier_name_len
660 && thisname[del_hier_name_len] == '/'))
661 file->flags |= FLAG_DEL_HERE;
668 memcpy(bp, basename, basename_len);
671 if (preserve_devices && IS_DEVICE(mode))
677 read_sbuf(f, bp, linkname_len - 1);
679 sanitize_path(bp, bp, "", lastdir_depth);
684 #ifdef SUPPORT_HARD_LINKS
685 if (preserve_hard_links && protocol_version < 28 && S_ISREG(mode))
686 flags |= XMIT_HAS_IDEV_DATA;
687 if (flags & XMIT_HAS_IDEV_DATA) {
689 if (protocol_version < 26) {
693 if (!(flags & XMIT_SAME_DEV))
694 dev = read_longint(f);
695 inode = read_longint(f);
697 if (flist->hlink_pool) {
698 file->link_u.idev = pool_talloc(flist->hlink_pool,
699 struct idev, 1, "inode_table");
700 file->F_INODE = inode;
706 if (always_checksum && (sum_len || protocol_version < 28)) {
708 int slen = protocol_version < 21 ? 2 : MD4_SUM_LENGTH;
710 file->u.sum = sum = bp;
713 /* Prior to 28, we get a useless set of nulls. */
716 read_buf(f, sum, slen);
719 if (!preserve_perms) {
720 /* set an appropriate set of permissions based on original
721 * permissions and umask. This emulates what GNU cp does */
722 file->mode &= ~orig_umask;
730 * Create a file_struct for a named file by reading its stat()
731 * information and performing extensive checks against global
734 * @return the new file, or NULL if there was an error or this file
735 * should be excluded.
737 * @todo There is a small optimization opportunity here to avoid
738 * stat()ing the file in some circumstances, which has a certain cost.
739 * We are called immediately after doing readdir(), and so we may
740 * already know the d_type of the file. We could for example avoid
741 * statting directories if we're not recursing, but this is not a very
742 * important case. Some systems may not have d_type.
744 struct file_struct *make_file(char *fname, struct file_list *flist,
747 static char *lastdir;
748 static int lastdir_len = -1;
749 struct file_struct *file;
751 char sum[SUM_LENGTH];
752 char thisname[MAXPATHLEN];
753 char linkname[MAXPATHLEN];
754 int alloc_len, basename_len, dirname_len, linkname_len, sum_len;
755 char *basename, *dirname, *bp;
756 unsigned short flags = 0;
758 if (!flist || !flist->count) /* Ignore lastdir when invalid. */
761 if (strlcpy(thisname, fname, sizeof thisname)
762 >= sizeof thisname - flist_dir_len) {
763 rprintf(FINFO, "skipping overly long name: %s\n",
767 clean_fname(thisname, 0);
769 sanitize_path(thisname, thisname, "", 0);
771 memset(sum, 0, SUM_LENGTH);
773 if (readlink_stat(thisname, &st, linkname) != 0) {
774 int save_errno = errno;
775 /* See if file is excluded before reporting an error. */
776 if (filter_level != NO_FILTERS
777 && is_excluded(thisname, 0, filter_level))
779 if (save_errno == ENOENT) {
781 /* Avoid "vanished" error if symlink points nowhere. */
782 if (copy_links && do_lstat(thisname, &st) == 0
783 && S_ISLNK(st.st_mode)) {
784 io_error |= IOERR_GENERAL;
785 rprintf(FERROR, "symlink has no referent: %s\n",
786 full_fname(thisname));
790 enum logcode c = am_daemon && protocol_version < 28
792 io_error |= IOERR_VANISHED;
793 rprintf(c, "file has vanished: %s\n",
794 full_fname(thisname));
797 io_error |= IOERR_GENERAL;
798 rsyserr(FERROR, save_errno, "readlink %s failed",
799 full_fname(thisname));
804 /* backup.c calls us with filter_level set to NO_FILTERS. */
805 if (filter_level == NO_FILTERS)
808 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
809 rprintf(FINFO, "skipping directory %s\n", safe_fname(thisname));
813 /* We only care about directories because we need to avoid recursing
814 * into a mount-point directory, not to avoid copying a symlinked
815 * file if -L (or similar) was specified. */
816 if (one_file_system && st.st_dev != filesystem_dev
817 && S_ISDIR(st.st_mode))
818 flags |= FLAG_MOUNT_POINT;
820 if (is_excluded(thisname, S_ISDIR(st.st_mode) != 0, filter_level))
823 if (lp_ignore_nonreadable(module_id)) {
825 if (!S_ISLNK(st.st_mode))
827 if (access(thisname, R_OK) != 0)
834 rprintf(FINFO, "[%s] make_file(%s,*,%d)\n",
835 who_am_i(), safe_fname(thisname), filter_level);
838 if ((basename = strrchr(thisname, '/')) != NULL) {
839 dirname_len = ++basename - thisname; /* counts future '\0' */
840 if (lastdir_len == dirname_len - 1
841 && strncmp(thisname, lastdir, lastdir_len) == 0) {
843 dirname_len = 0; /* indicates no copy is needed */
851 basename_len = strlen(basename) + 1; /* count the '\0' */
854 linkname_len = S_ISLNK(st.st_mode) ? strlen(linkname) + 1 : 0;
859 sum_len = always_checksum && S_ISREG(st.st_mode) ? MD4_SUM_LENGTH : 0;
861 alloc_len = file_struct_len + dirname_len + basename_len
862 + linkname_len + sum_len;
864 bp = pool_alloc(flist->file_pool, alloc_len,
865 "receive_file_entry");
867 if (!(bp = new_array(char, alloc_len)))
868 out_of_memory("receive_file_entry");
871 file = (struct file_struct *)bp;
872 memset(bp, 0, file_struct_len);
873 bp += file_struct_len;
876 file->modtime = st.st_mtime;
877 file->length = st.st_size;
878 file->mode = st.st_mode;
879 file->uid = st.st_uid;
880 file->gid = st.st_gid;
882 #ifdef SUPPORT_HARD_LINKS
883 if (flist && flist->hlink_pool) {
884 if (protocol_version < 28) {
885 if (S_ISREG(st.st_mode))
886 file->link_u.idev = pool_talloc(
887 flist->hlink_pool, struct idev, 1,
890 if (!S_ISDIR(st.st_mode) && st.st_nlink > 1)
891 file->link_u.idev = pool_talloc(
892 flist->hlink_pool, struct idev, 1,
896 if (file->link_u.idev) {
897 file->F_DEV = st.st_dev;
898 file->F_INODE = st.st_ino;
903 file->dirname = lastdir = bp;
904 lastdir_len = dirname_len - 1;
905 memcpy(bp, dirname, dirname_len - 1);
909 file->dirname = dirname;
912 memcpy(bp, basename, basename_len);
915 #ifdef HAVE_STRUCT_STAT_ST_RDEV
916 if (preserve_devices && IS_DEVICE(st.st_mode))
917 file->u.rdev = st.st_rdev;
923 memcpy(bp, linkname, linkname_len);
930 file_checksum(thisname, bp, st.st_size);
934 file->dir.root = flist_dir;
936 /* This code is only used by the receiver when it is building
937 * a list of files for a delete pass. */
938 if (keep_dirlinks && linkname_len && flist) {
940 int save_mode = file->mode;
941 file->mode = S_IFDIR; /* find a directory w/our name */
942 if (flist_find(the_file_list, file) >= 0
943 && do_stat(thisname, &st2) == 0 && S_ISDIR(st2.st_mode)) {
944 file->modtime = st2.st_mtime;
945 file->length = st2.st_size;
946 file->mode = st2.st_mode;
947 file->uid = st2.st_uid;
948 file->gid = st2.st_gid;
951 file->mode = save_mode;
954 if (S_ISREG(st.st_mode) || S_ISLNK(st.st_mode))
955 stats.total_size += st.st_size;
961 static struct file_struct *send_file_name(int f, struct file_list *flist,
962 char *fname, unsigned short base_flags)
964 struct file_struct *file;
966 file = make_file(fname, flist, f == -2 ? SERVER_FILTERS : ALL_FILTERS);
970 maybe_emit_filelist_progress(flist->count + flist_count_offset);
974 if (file->basename[0]) {
975 flist->files[flist->count++] = file;
976 send_file_entry(file, f, base_flags);
981 static void send_if_directory(int f, struct file_list *flist,
982 struct file_struct *file)
984 char fbuf[MAXPATHLEN];
986 if (S_ISDIR(file->mode)
987 && !(file->flags & FLAG_MOUNT_POINT) && f_name_to(file, fbuf)) {
989 unsigned int len = strlen(fbuf);
990 if (len > 1 && fbuf[len-1] == '/')
992 if (len >= MAXPATHLEN - 1) {
993 io_error |= IOERR_GENERAL;
994 rprintf(FERROR, "skipping long-named directory: %s\n",
998 save_filters = push_local_filters(fbuf, len);
999 send_directory(f, flist, fbuf, len);
1000 pop_local_filters(save_filters);
1005 /* This function is normally called by the sender, but the receiving side also
1006 * calls it from get_dirlist() with f set to -1 so that we just construct the
1007 * file list in memory without sending it over the wire. Also, get_dirlist()
1008 * might call this with f set to -2, which also indicates that local filter
1009 * rules should be ignored. */
1010 static void send_directory(int f, struct file_list *flist,
1011 char *fbuf, int len)
1017 int start = flist->count;
1019 if (!(d = opendir(fbuf))) {
1020 io_error |= IOERR_GENERAL;
1021 rsyserr(FERROR, errno, "opendir %s failed", full_fname(fbuf));
1026 if (len != 1 || *fbuf != '/')
1029 remainder = MAXPATHLEN - (p - fbuf);
1031 for (errno = 0, di = readdir(d); di; errno = 0, di = readdir(d)) {
1032 char *dname = d_name(di);
1033 if (dname[0] == '.' && (dname[1] == '\0'
1034 || (dname[1] == '.' && dname[2] == '\0')))
1036 if (strlcpy(p, dname, remainder) < remainder)
1037 send_file_name(f, flist, fbuf, 0);
1039 io_error |= IOERR_GENERAL;
1041 "cannot send long-named file %s\n",
1049 io_error |= IOERR_GENERAL;
1050 rsyserr(FERROR, errno, "readdir(%s)", full_fname(fbuf));
1056 int i, end = flist->count - 1;
1057 for (i = start; i <= end; i++)
1058 send_if_directory(f, flist, flist->files[i]);
1063 struct file_list *send_file_list(int f, int argc, char *argv[])
1067 char *p, *dir, olddir[sizeof curr_dir];
1068 char lastpath[MAXPATHLEN] = "";
1069 struct file_list *flist;
1070 struct timeval start_tv, end_tv;
1074 if (show_filelist_p())
1075 start_filelist_progress("building file list");
1077 start_write = stats.total_written;
1078 gettimeofday(&start_tv, NULL);
1080 flist = flist_new(WITH_HLINK, "send_file_list");
1082 io_start_buffering_out();
1083 if (filesfrom_fd >= 0) {
1084 if (argv[0] && !push_dir(argv[0])) {
1085 rsyserr(FERROR, errno, "push_dir %s failed",
1086 full_fname(argv[0]));
1087 exit_cleanup(RERR_FILESELECT);
1093 char fname2[MAXPATHLEN];
1094 char *fname = fname2;
1098 if (read_filesfrom_line(filesfrom_fd, fname) == 0)
1100 sanitize_path(fname, fname, "", 0);
1104 strlcpy(fname, *argv++, MAXPATHLEN);
1106 sanitize_path(fname, fname, "", 0);
1110 if (!l || fname[l - 1] == '/') {
1111 if (l == 2 && fname[0] == '.') {
1112 /* Turn "./" into just "." rather than "./." */
1115 if (l + 1 >= MAXPATHLEN)
1116 overflow_exit("send_file_list");
1121 } else if (l > 1 && fname[l-1] == '.' && fname[l-2] == '.'
1122 && (l == 2 || fname[l-3] == '/')) {
1123 if (l + 2 >= MAXPATHLEN)
1124 overflow_exit("send_file_list");
1130 is_dot_dir = fname[l-1] == '.'
1131 && (l == 1 || fname[l-2] == '/');
1134 if (link_stat(fname, &st, keep_dirlinks) != 0) {
1135 io_error |= IOERR_GENERAL;
1136 rsyserr(FERROR, errno, "link_stat %s failed",
1141 if (S_ISDIR(st.st_mode) && !xfer_dirs) {
1142 rprintf(FINFO, "skipping directory %s\n",
1150 if (!relative_paths) {
1151 p = strrchr(fname, '/');
1160 } else if ((p = strstr(fname, "/./")) != NULL) {
1173 static char *lastdir;
1174 static int lastdir_len;
1176 strlcpy(olddir, curr_dir, sizeof olddir);
1178 if (!push_dir(dir)) {
1179 io_error |= IOERR_GENERAL;
1180 rsyserr(FERROR, errno, "push_dir %s failed",
1185 if (lastdir && strcmp(lastdir, dir) == 0) {
1186 flist_dir = lastdir;
1187 flist_dir_len = lastdir_len;
1189 flist_dir = lastdir = strdup(dir);
1190 flist_dir_len = lastdir_len = strlen(dir);
1194 if (implied_dirs && (p=strrchr(fname,'/')) && p != fname) {
1195 /* Send the implied directories at the start of the
1196 * source spec, so we get their permissions right. */
1197 char *lp = lastpath, *fn = fname, *slash = fname;
1199 /* Skip any initial directories in our path that we
1200 * have in common with lastpath. */
1201 while (*fn && *lp == *fn) {
1207 if (fn != p || (*lp && *lp != '/')) {
1208 int save_copy_links = copy_links;
1209 int save_xfer_dirs = xfer_dirs;
1210 copy_links = copy_unsafe_links;
1212 while ((slash = strchr(slash+1, '/')) != 0) {
1214 send_file_name(f, flist, fname, 0);
1217 copy_links = save_copy_links;
1218 xfer_dirs = save_xfer_dirs;
1220 strlcpy(lastpath, fname, sizeof lastpath);
1225 if (one_file_system)
1226 filesystem_dev = st.st_dev;
1228 if (recurse || (xfer_dirs && is_dot_dir)) {
1229 struct file_struct *file;
1230 if ((file = send_file_name(f, flist, fname, XMIT_TOP_DIR)))
1231 send_if_directory(f, flist, file);
1233 send_file_name(f, flist, fname, 0);
1238 if (!pop_dir(olddir)) {
1239 rsyserr(FERROR, errno, "pop_dir %s failed",
1240 full_fname(olddir));
1241 exit_cleanup(RERR_FILESELECT);
1246 gettimeofday(&end_tv, NULL);
1247 stats.flist_buildtime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1248 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1249 if (stats.flist_buildtime == 0)
1250 stats.flist_buildtime = 1;
1253 send_file_entry(NULL, f, 0);
1255 if (show_filelist_p())
1256 finish_filelist_progress(flist);
1258 gettimeofday(&end_tv, NULL);
1259 stats.flist_xfertime = (int64)(end_tv.tv_sec - start_tv.tv_sec) * 1000
1260 + (end_tv.tv_usec - start_tv.tv_usec) / 1000;
1262 if (flist->hlink_pool) {
1263 pool_destroy(flist->hlink_pool);
1264 flist->hlink_pool = NULL;
1267 /* Sort the list without removing any duplicates. This allows the
1268 * receiving side to ask for any name they like, which gives us the
1269 * flexibility to change the way we unduplicate names in the future
1270 * without causing a compatibility problem with older versions. */
1271 clean_flist(flist, 0, 0);
1273 /* Now send the uid/gid list. This was introduced in
1274 * protocol version 15 */
1277 /* send the io_error flag */
1278 write_int(f, lp_ignore_errors(module_id) ? 0 : io_error);
1281 stats.flist_size = stats.total_written - start_write;
1282 stats.num_files = flist->count;
1285 output_flist(flist);
1288 rprintf(FINFO, "send_file_list done\n");
1294 struct file_list *recv_file_list(int f)
1296 struct file_list *flist;
1297 unsigned short flags;
1300 if (show_filelist_p())
1301 start_filelist_progress("receiving file list");
1303 start_read = stats.total_read;
1305 flist = flist_new(WITH_HLINK, "recv_file_list");
1308 flist->malloced = 1000;
1309 flist->files = new_array(struct file_struct *, flist->malloced);
1314 while ((flags = read_byte(f)) != 0) {
1315 struct file_struct *file;
1317 flist_expand(flist);
1319 if (protocol_version >= 28 && (flags & XMIT_EXTENDED_FLAGS))
1320 flags |= read_byte(f) << 8;
1321 file = receive_file_entry(flist, flags, f);
1323 if (S_ISREG(file->mode))
1324 stats.total_size += file->length;
1326 flist->files[flist->count++] = file;
1328 maybe_emit_filelist_progress(flist->count);
1331 rprintf(FINFO, "recv_file_name(%s)\n",
1332 safe_fname(f_name(file)));
1335 receive_file_entry(NULL, 0, 0); /* Signal that we're done. */
1338 rprintf(FINFO, "received %d names\n", flist->count);
1340 if (show_filelist_p())
1341 finish_filelist_progress(flist);
1343 clean_flist(flist, relative_paths, 1);
1346 /* Now send the uid/gid list. This was introduced in
1347 * protocol version 15 */
1348 recv_uid_list(f, flist);
1350 /* Recv the io_error flag */
1351 if (lp_ignore_errors(module_id) || ignore_errors)
1354 io_error |= read_int(f);
1358 output_flist(flist);
1362 for (i = 0; i < flist->count; i++)
1363 list_file_entry(flist->files[i]);
1367 rprintf(FINFO, "recv_file_list done\n");
1369 stats.flist_size = stats.total_read - start_read;
1370 stats.num_files = flist->count;
1375 out_of_memory("recv_file_list");
1376 return NULL; /* not reached */
1380 static int file_compare(struct file_struct **file1, struct file_struct **file2)
1382 return f_name_cmp(*file1, *file2);
1386 /* Search for an identically-named item in the file list. Note that the
1387 * items must agree in their directory-ness, or no match is returned. */
1388 int flist_find(struct file_list *flist, struct file_struct *f)
1390 int low = flist->low, high = flist->high;
1391 int ret, mid, mid_up;
1393 while (low <= high) {
1394 mid = (low + high) / 2;
1395 for (mid_up = mid; !flist->files[mid_up]->basename; mid_up++) {}
1397 ret = f_name_cmp(flist->files[mid_up], f);
1401 if (protocol_version < 29
1402 && S_ISDIR(flist->files[mid_up]->mode)
1403 != S_ISDIR(f->mode))
1417 * Free up any resources a file_struct has allocated
1418 * and clear the file.
1420 void clear_file(int i, struct file_list *flist)
1422 if (flist->hlink_pool && flist->files[i]->link_u.idev)
1423 pool_free(flist->hlink_pool, 0, flist->files[i]->link_u.idev);
1424 memset(flist->files[i], 0, file_struct_len);
1429 * allocate a new file list
1431 struct file_list *flist_new(int with_hlink, char *msg)
1433 struct file_list *flist;
1435 flist = new(struct file_list);
1439 memset(flist, 0, sizeof (struct file_list));
1441 if (!(flist->file_pool = pool_create(FILE_EXTENT, 0,
1442 out_of_memory, POOL_INTERN)))
1445 #ifdef SUPPORT_HARD_LINKS
1446 if (with_hlink && preserve_hard_links) {
1447 if (!(flist->hlink_pool = pool_create(HLINK_EXTENT,
1448 sizeof (struct idev), out_of_memory, POOL_INTERN)))
1457 * free up all elements in a flist
1459 void flist_free(struct file_list *flist)
1461 pool_destroy(flist->file_pool);
1462 pool_destroy(flist->hlink_pool);
1469 * This routine ensures we don't have any duplicate names in our file list.
1470 * duplicate names can cause corruption because of the pipelining
1472 static void clean_flist(struct file_list *flist, int strip_root, int no_dups)
1478 if (flist->count == 0) {
1483 sorting_flist = flist;
1484 qsort(flist->files, flist->count,
1485 sizeof flist->files[0], (int (*)())file_compare);
1486 sorting_flist = NULL;
1488 for (i = no_dups? 0 : flist->count; i < flist->count; i++) {
1489 if (flist->files[i]->basename) {
1494 flist->low = prev_i;
1495 while (++i < flist->count) {
1497 struct file_struct *file = flist->files[i];
1499 if (!file->basename)
1501 if (f_name_cmp(file, flist->files[prev_i]) == 0)
1503 else if (protocol_version >= 29 && S_ISDIR(file->mode)) {
1504 int save_mode = file->mode;
1505 /* Make sure that this directory doesn't duplicate a
1506 * non-directory earlier in the list. */
1507 flist->high = prev_i;
1508 file->mode = S_IFREG;
1509 j = flist_find(flist, file);
1510 file->mode = save_mode;
1514 struct file_struct *fp = flist->files[j];
1516 /* If one is a dir and the other is not, we want to
1517 * keep the dir because it might have contents in the
1519 if (S_ISDIR(file->mode) != S_ISDIR(fp->mode)) {
1520 if (S_ISDIR(file->mode))
1526 if (verbose > 1 && !am_server) {
1528 "removing duplicate name %s from file list (%d)\n",
1529 safe_fname(f_name(file)), drop);
1531 /* Make sure that if we unduplicate '.', that we don't
1532 * lose track of a user-specified top directory. */
1533 flist->files[keep]->flags |= flist->files[drop]->flags
1534 & (FLAG_TOP_DIR|FLAG_DEL_HERE);
1536 clear_file(drop, flist);
1539 if (flist->low == drop) {
1541 j < i && !flist->files[j]->basename;
1550 flist->high = no_dups ? prev_i : flist->count - 1;
1553 /* We need to strip off the leading slashes for relative
1554 * paths, but this must be done _after_ the sorting phase. */
1555 for (i = flist->low; i <= flist->high; i++) {
1556 struct file_struct *file = flist->files[i];
1560 if (*file->dirname == '/') {
1561 char *s = file->dirname + 1;
1562 while (*s == '/') s++;
1563 memmove(file->dirname, s, strlen(s) + 1);
1566 if (!*file->dirname)
1567 file->dirname = NULL;
1573 static void output_flist(struct file_list *flist)
1575 char uidbuf[16], gidbuf[16], depthbuf[16];
1576 struct file_struct *file;
1577 const char *who = who_am_i();
1580 for (i = 0; i < flist->count; i++) {
1581 file = flist->files[i];
1582 if ((am_root || am_sender) && preserve_uid)
1583 sprintf(uidbuf, " uid=%ld", (long)file->uid);
1586 if (preserve_gid && file->gid != GID_NONE)
1587 sprintf(gidbuf, " gid=%ld", (long)file->gid);
1591 sprintf(depthbuf, "%d", file->dir.depth);
1592 rprintf(FINFO, "[%s] i=%d %s %s%s%s%s mode=0%o len=%.0f%s%s flags=%x\n",
1593 who, i, am_sender ? NS(file->dir.root) : depthbuf,
1594 file->dirname ? safe_fname(file->dirname) : "",
1595 file->dirname ? "/" : "", NS(file->basename),
1596 S_ISDIR(file->mode) ? "/" : "", (int)file->mode,
1597 (double)file->length, uidbuf, gidbuf, file->flags);
1602 enum fnc_state { s_DIR, s_SLASH, s_BASE, s_TRAILING };
1603 enum fnc_type { t_PATH, t_ITEM };
1605 /* Compare the names of two file_struct entities, similar to how strcmp()
1606 * would do if it were operating on the joined strings.
1608 * Some differences beginning with protocol_version 29: (1) directory names
1609 * are compared with an assumed trailing slash so that they compare in a
1610 * way that would cause them to sort immediately prior to any content they
1611 * may have; (2) a directory of any name compares after a non-directory of
1612 * any name at the same depth; (3) a directory with name "." compares prior
1613 * to anything else. These changes mean that a directory and a non-dir
1614 * with the same name will not compare as equal (protocol_version >= 29).
1616 * The dirname component can be an empty string, but the basename component
1617 * cannot (and never is in the current codebase). The basename component
1618 * may be NULL (for a removed item), in which case it is considered to be
1619 * after any existing item. */
1620 int f_name_cmp(struct file_struct *f1, struct file_struct *f2)
1623 const uchar *c1, *c2;
1624 enum fnc_state state1, state2;
1625 enum fnc_type type1, type2;
1626 enum fnc_type t_path = protocol_version >= 29 ? t_PATH : t_ITEM;
1628 if (!f1 || !f1->basename) {
1629 if (!f2 || !f2->basename)
1633 if (!f2 || !f2->basename)
1636 c1 = (uchar*)f1->dirname;
1637 c2 = (uchar*)f2->dirname;
1641 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
1642 c1 = (uchar*)f1->basename;
1643 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
1645 state1 = s_TRAILING;
1658 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
1659 c2 = (uchar*)f2->basename;
1660 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
1662 state2 = s_TRAILING;
1676 return type1 == t_PATH ? 1 : -1;
1679 if ((dif = (int)*c1++ - (int)*c2++) != 0)
1688 type1 = S_ISDIR(f1->mode) ? t_path : t_ITEM;
1689 c1 = (uchar*)f1->basename;
1690 if (type1 == t_PATH && *c1 == '.' && !c1[1]) {
1692 state1 = s_TRAILING;
1698 state1 = s_TRAILING;
1699 if (type1 == t_PATH) {
1708 if (*c2 && type1 != type2)
1709 return type1 == t_PATH ? 1 : -1;
1718 type2 = S_ISDIR(f2->mode) ? t_path : t_ITEM;
1719 c2 = (uchar*)f2->basename;
1720 if (type2 == t_PATH && *c2 == '.' && !c2[1]) {
1722 state2 = s_TRAILING;
1728 state2 = s_TRAILING;
1729 if (type2 == t_PATH) {
1741 return type1 == t_PATH ? 1 : -1;
1749 /* Return a copy of the full filename of a flist entry, using the indicated
1750 * buffer. No size-checking is done because we checked the size when creating
1751 * the file_struct entry.
1753 char *f_name_to(struct file_struct *f, char *fbuf)
1755 if (!f || !f->basename)
1759 int len = strlen(f->dirname);
1760 memcpy(fbuf, f->dirname, len);
1762 strcpy(fbuf + len + 1, f->basename);
1764 strcpy(fbuf, f->basename);
1769 /* Like f_name_to(), but we rotate through 5 static buffers of our own. */
1770 char *f_name(struct file_struct *f)
1772 static char names[5][MAXPATHLEN];
1773 static unsigned int n;
1775 n = (n + 1) % (sizeof names / sizeof names[0]);
1777 return f_name_to(f, names[n]);
1781 /* Do a non-recursive scan of the named directory, possibly ignoring all
1782 * exclude rules except for the daemon's. If "dlen" is >=0, it is the length
1783 * of the dirname string, and also indicates that "dirname" is a MAXPATHLEN
1784 * buffer (the functions we call will append names onto the end, but the old
1785 * dir value will be restored on exit). */
1786 struct file_list *get_dirlist(char *dirname, int dlen,
1787 int ignore_filter_rules)
1789 struct file_list *dirlist;
1790 char dirbuf[MAXPATHLEN];
1791 int save_recurse = recurse;
1794 dlen = strlcpy(dirbuf, dirname, MAXPATHLEN);
1795 if (dlen >= MAXPATHLEN)
1800 dirlist = flist_new(WITHOUT_HLINK, "get_dirlist");
1803 send_directory(ignore_filter_rules ? -2 : -1, dirlist, dirname, dlen);
1804 recurse = save_recurse;
1806 flist_count_offset += dirlist->count;
1808 clean_flist(dirlist, 0, 0);
1811 output_flist(dirlist);