2 * Routines only used by the receiving process.
4 * Copyright (C) 1996-2000 Andrew Tridgell
5 * Copyright (C) 1996 Paul Mackerras
6 * Copyright (C) 2003-2022 Wayne Davison
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 3 of the License, or
11 * (at your option) any later version.
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, visit the http://fsf.org website.
29 extern int inc_recurse;
30 extern int log_before_transfer;
31 extern int stdout_format_has_i;
32 extern int logfile_format_has_i;
33 extern int want_xattr_optim;
34 extern int csum_length;
35 extern int read_batch;
36 extern int write_batch;
37 extern int batch_gen_fd;
38 extern int protocol_version;
39 extern int relative_paths;
40 extern int preserve_hard_links;
41 extern int preserve_perms;
42 extern int write_devices;
43 extern int preserve_xattrs;
45 extern int basis_dir_cnt;
46 extern int make_backups;
47 extern int cleanup_got_literal;
48 extern int remove_source_files;
49 extern int append_mode;
50 extern int sparse_files;
51 extern int preallocate_files;
52 extern int keep_partial;
53 extern int checksum_seed;
54 extern int whole_file;
56 extern int inplace_partial;
57 extern int allowed_lull;
58 extern int delay_updates;
59 extern int xfersum_type;
60 extern BOOL want_progress_now;
61 extern mode_t orig_umask;
62 extern struct stats stats;
64 extern char *partial_dir;
65 extern char *basis_dir[MAX_BASIS_DIRS+1];
66 extern char sender_file_sum[MAX_DIGEST_LEN];
67 extern struct file_list *cur_flist, *first_flist, *dir_flist;
68 extern filter_rule_list daemon_filter_list;
69 extern OFF_T preallocated_len;
71 static struct bitbag *delayed_bits = NULL;
72 static int phase = 0, redoing = 0;
73 static flist_ndx_list batch_redo_list;
74 /* This is non-0 when we are updating the basis file or an identical copy: */
75 static int updating_basis_or_equiv;
77 #define TMPNAME_SUFFIX ".XXXXXX"
78 #define TMPNAME_SUFFIX_LEN ((int)sizeof TMPNAME_SUFFIX - 1)
79 #define MAX_UNIQUE_NUMBER 999999
80 #define MAX_UNIQUE_LOOP 100
82 /* get_tmpname() - create a tmp filename for a given filename
84 * If a tmpdir is defined, use that as the directory to put it in. Otherwise,
85 * the tmp filename is in the same directory as the given name. Note that
86 * there may be no directory at all in the given name!
88 * The tmp filename is basically the given filename with a dot prepended, and
89 * .XXXXXX appended (for mkstemp() to put its unique gunk in). We take care
90 * to not exceed either the MAXPATHLEN or NAME_MAX, especially the last, as
91 * the basename basically becomes 8 characters longer. In such a case, the
92 * original name is shortened sufficiently to make it all fit.
94 * If the make_unique arg is True, the XXXXXX string is replaced with a unique
95 * string that doesn't exist at the time of the check. This is intended to be
96 * used for creating hard links, symlinks, devices, and special files, since
97 * normal files should be handled by mkstemp() for safety.
99 * Of course, the only reason the file is based on the original name is to
100 * make it easier to figure out what purpose a temp file is serving when a
101 * transfer is in progress. */
102 int get_tmpname(char *fnametmp, const char *fname, BOOL make_unique)
104 int maxname, length = 0;
109 /* Note: this can't overflow, so the return value is safe */
110 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
111 fnametmp[length++] = '/';
114 if ((f = strrchr(fname, '/')) != NULL) {
118 /* copy up to and including the slash */
119 strlcpy(fnametmp, fname, length + 1);
124 if (!tmpdir) { /* using a tmpdir avoids the leading dot on our temp names */
125 if (*f == '.') /* avoid an extra leading dot for OS X's sake */
127 fnametmp[length++] = '.';
130 /* The maxname value is bufsize, and includes space for the '\0'.
131 * NAME_MAX needs an extra -1 for the name's leading dot. */
132 maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN,
133 NAME_MAX - 1 - TMPNAME_SUFFIX_LEN);
136 rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
142 int added = strlcpy(fnametmp + length, f, maxname);
143 if (added >= maxname)
145 suf = fnametmp + length + added;
147 /* Trim any dangling high-bit chars if the first-trimmed char (if any) is
148 * also a high-bit char, just in case we cut into a multi-byte sequence.
149 * We are guaranteed to stop because of the leading '.' we added. */
150 if ((int)f[added] & 0x80) {
151 while ((int)suf[-1] & 0x80)
154 /* trim one trailing dot before our suffix's dot */
158 suf = fnametmp + length - 1; /* overwrite the leading dot with suffix's dot */
161 static unsigned counter_limit;
164 if (!counter_limit) {
165 counter_limit = (unsigned)getpid() + MAX_UNIQUE_LOOP;
166 if (counter_limit > MAX_UNIQUE_NUMBER || counter_limit < MAX_UNIQUE_LOOP)
167 counter_limit = MAX_UNIQUE_LOOP;
169 counter = counter_limit - MAX_UNIQUE_LOOP;
171 /* This doesn't have to be very good because we don't need
172 * to worry about someone trying to guess the values: all
173 * a conflict will do is cause a device, special file, hard
174 * link, or symlink to fail to be created. Also: avoid
175 * using mktemp() due to gcc's annoying warning. */
177 snprintf(suf, TMPNAME_SUFFIX_LEN+1, ".%d", counter);
178 if (access(fnametmp, 0) < 0)
180 if (++counter >= counter_limit)
184 memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1);
189 /* Opens a temporary file for writing.
190 * Success: Writes name into fnametmp, returns fd.
191 * Failure: Clobbers fnametmp, returns -1.
192 * Calling cleanup_set() is the caller's job. */
193 int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
198 if (!get_tmpname(fnametmp, fname, False))
202 /* For --fake-super, the file must be useable by the copying
203 * user, just like it would be for root. */
204 added_perms = S_IRUSR|S_IWUSR;
206 /* For a normal copy, we need to be able to tweak things like xattrs. */
207 added_perms = S_IWUSR;
210 /* We initially set the perms without the setuid/setgid bits or group
211 * access to ensure that there is no race condition. They will be
212 * correctly updated after the right owner and group info is set.
213 * (Thanks to snabb@epipe.fi for pointing this out.) */
214 fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
217 /* In most cases parent directories will already exist because their
218 * information should have been previously transferred, but that may
219 * not be the case with -R */
220 if (fd == -1 && relative_paths && errno == ENOENT
221 && make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) {
222 /* Get back to name with XXXXXX in it. */
223 get_tmpname(fnametmp, fname, False);
224 fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
229 rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
230 full_fname(fnametmp));
237 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
238 const char *fname, int fd, struct file_struct *file, int inplace_sizing)
240 static char file_sum1[MAX_DIGEST_LEN];
241 struct map_struct *mapbuf;
242 struct sum_struct sum;
245 OFF_T total_size = F_LENGTH(file);
252 #ifdef SUPPORT_PREALLOCATION
253 if (preallocate_files && fd != -1 && total_size > 0 && (!inplace_sizing || total_size > size_r)) {
254 /* Try to preallocate enough space for file's eventual length. Can
255 * reduce fragmentation on filesystems like ext4, xfs, and NTFS. */
256 if ((preallocated_len = do_fallocate(fd, 0, total_size)) < 0)
257 rsyserr(FWARNING, errno, "do_fallocate %s", full_fname(fname));
260 if (inplace_sizing) {
261 #ifdef HAVE_FTRUNCATE
262 /* The most compatible way to create a sparse file is to start with no length. */
263 if (sparse_files > 0 && whole_file && fd >= 0 && do_ftruncate(fd, 0) == 0)
264 preallocated_len = 0;
267 preallocated_len = size_r;
269 preallocated_len = 0;
271 read_sum_head(f_in, &sum);
273 if (fd_r >= 0 && size_r > 0) {
274 int32 read_size = MAX(sum.blength * 2, 16*1024);
275 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
276 if (DEBUG_GTE(DELTASUM, 2)) {
277 rprintf(FINFO, "recv mapped %s of size %s\n",
278 fname_r, big_num(size_r));
283 sum_init(xfersum_type, checksum_seed);
285 if (append_mode > 0) {
287 sum.flength = (OFF_T)sum.count * sum.blength;
289 sum.flength -= sum.blength - sum.remainder;
290 if (append_mode == 2 && mapbuf) {
291 for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
292 if (INFO_GTE(PROGRESS, 1))
293 show_progress(offset, total_size);
294 sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
298 if (offset < sum.flength) {
299 int32 len = (int32)(sum.flength - offset);
300 if (INFO_GTE(PROGRESS, 1))
301 show_progress(offset, total_size);
302 sum_update(map_ptr(mapbuf, offset, len), len);
305 offset = sum.flength;
306 if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
307 rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s",
308 full_fname(fname), big_num(j), big_num(offset));
309 exit_cleanup(RERR_FILEIO);
313 while ((i = recv_token(f_in, &data)) != 0) {
314 if (INFO_GTE(PROGRESS, 1))
315 show_progress(offset, total_size);
318 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH | MSK_ACTIVE_RECEIVER);
321 if (DEBUG_GTE(DELTASUM, 3)) {
322 rprintf(FINFO,"data recv %d at %s\n",
326 stats.literal_data += i;
327 cleanup_got_literal = 1;
331 if (fd != -1 && write_file(fd, 0, offset, data, i) != i)
332 goto report_write_error;
338 offset2 = i * (OFF_T)sum.blength;
340 if (i == (int)sum.count-1 && sum.remainder != 0)
343 stats.matched_data += len;
345 if (DEBUG_GTE(DELTASUM, 3)) {
347 "chunk[%d] of size %ld at %s offset=%s%s\n",
348 i, (long)len, big_num(offset2), big_num(offset),
349 updating_basis_or_equiv && offset == offset2 ? " (seek)" : "");
353 map = map_ptr(mapbuf,offset2,len);
356 sum_update(map, len);
359 if (updating_basis_or_equiv) {
360 if (offset == offset2 && fd != -1) {
361 if (skip_matched(fd, offset, map, len) < 0)
362 goto report_write_error;
367 if (fd != -1 && map && write_file(fd, 0, offset, map, len) != (int)len)
368 goto report_write_error;
372 if (fd != -1 && offset > 0) {
373 if (sparse_files > 0) {
374 if (sparse_end(fd, offset) != 0)
375 goto report_write_error;
376 } else if (flush_write_file(fd) < 0) {
378 rsyserr(FERROR_XFER, errno, "write failed on %s", full_fname(fname));
379 exit_cleanup(RERR_FILEIO);
383 #ifdef HAVE_FTRUNCATE
384 /* inplace: New data could be shorter than old data.
385 * preallocate_files: total_size could have been an overestimate.
386 * Cut off any extra preallocated zeros from dest file. */
387 if ((inplace_sizing || preallocated_len > offset) && fd != -1 && !IS_DEVICE(file->mode)) {
388 if (do_ftruncate(fd, offset) < 0)
389 rsyserr(FERROR_XFER, errno, "ftruncate failed on %s", full_fname(fname));
393 if (INFO_GTE(PROGRESS, 1))
394 end_progress(total_size);
396 sum_len = sum_end(file_sum1);
398 if (do_fsync && fd != -1 && fsync(fd) != 0) {
399 rsyserr(FERROR, errno, "fsync failed on %s", full_fname(fname));
400 exit_cleanup(RERR_FILEIO);
406 read_buf(f_in, sender_file_sum, sum_len);
407 if (DEBUG_GTE(DELTASUM, 2))
408 rprintf(FINFO,"got file_sum\n");
409 if (fd != -1 && memcmp(file_sum1, sender_file_sum, sum_len) != 0)
415 static void discard_receive_data(int f_in, struct file_struct *file)
417 receive_data(f_in, NULL, -1, 0, NULL, -1, file, 0);
420 static void handle_delayed_updates(char *local_name)
422 char *fname, *partialptr;
425 for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
426 struct file_struct *file = cur_flist->files[ndx];
427 fname = local_name ? local_name : f_name(file, NULL);
428 if ((partialptr = partial_dir_fname(fname)) != NULL) {
429 if (make_backups > 0 && !make_backup(fname, False))
431 if (DEBUG_GTE(RECV, 1)) {
432 rprintf(FINFO, "renaming %s to %s\n",
435 /* We don't use robust_rename() here because the
436 * partial-dir must be on the same drive. */
437 if (do_rename(partialptr, fname) < 0) {
438 rsyserr(FERROR_XFER, errno,
439 "rename failed for %s (from %s)",
440 full_fname(fname), partialptr);
442 if (remove_source_files
443 || (preserve_hard_links && F_IS_HLINKED(file)))
444 send_msg_int(MSG_SUCCESS, ndx);
445 handle_partial_dir(partialptr, PDIR_DELETE);
451 static void no_batched_update(int ndx, BOOL is_redo)
453 struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
454 struct file_struct *file = flist->files[ndx - flist->ndx_start];
456 rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
457 is_redo ? " resend of" : "", f_name(file, NULL));
459 if (inc_recurse && !dry_run)
460 send_msg_int(MSG_NO_SEND, ndx);
463 static int we_want_redo(int desired_ndx)
465 static int redo_ndx = -1;
467 while (redo_ndx < desired_ndx) {
469 no_batched_update(redo_ndx, True);
470 if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
474 if (redo_ndx == desired_ndx) {
482 static int gen_wants_ndx(int desired_ndx, int flist_num)
484 static int next_ndx = -1;
485 static int done_cnt = 0;
486 static BOOL got_eof = False;
491 /* TODO: integrate gen-reading I/O into perform_io() so this is not needed? */
492 io_flush(FULL_FLUSH);
494 while (next_ndx < desired_ndx) {
495 if (inc_recurse && flist_num <= done_cnt)
498 no_batched_update(next_ndx, False);
499 if ((next_ndx = read_int(batch_gen_fd)) < 0) {
509 if (next_ndx == desired_ndx) {
518 * main routine for receiver process.
520 * Receiver process runs on the same host as the generator process. */
521 int recv_files(int f_in, int f_out, char *local_name)
526 char *fname, fbuf[MAXPATHLEN];
527 char xname[MAXPATHLEN];
528 char *fnametmp, fnametmpbuf[MAXPATHLEN];
529 char *fnamecmp, *partialptr;
530 char fnamecmpbuf[MAXPATHLEN];
532 struct file_struct *file;
533 int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
534 enum logcode log_code = log_before_transfer ? FLOG : FINFO;
535 int max_phase = protocol_version >= 29 ? 2 : 1;
536 int dflt_perms = (ACCESSPERMS & ~orig_umask);
538 const char *parent_dirname = "";
540 int ndx, recv_ok, one_inplace;
542 if (DEBUG_GTE(RECV, 1))
543 rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
546 delayed_bits = bitbag_create(cur_flist->used + 1);
556 /* This call also sets cur_flist. */
557 ndx = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type,
559 if (ndx == NDX_DONE) {
560 if (!am_server && cur_flist) {
561 set_current_file_index(NULL, 0);
562 if (INFO_GTE(PROGRESS, 2))
565 if (inc_recurse && first_flist) {
567 ndx = first_flist->used + first_flist->ndx_start;
568 gen_wants_ndx(ndx, first_flist->flist_num);
570 flist_free(first_flist);
573 } else if (read_batch && first_flist) {
574 ndx = first_flist->used;
575 gen_wants_ndx(ndx, first_flist->flist_num);
577 if (++phase > max_phase)
579 if (DEBUG_GTE(RECV, 1))
580 rprintf(FINFO, "recv_files phase=%d\n", phase);
581 if (phase == 2 && delay_updates)
582 handle_delayed_updates(local_name);
583 write_int(f_out, NDX_DONE);
587 if (ndx - cur_flist->ndx_start >= 0)
588 file = cur_flist->files[ndx - cur_flist->ndx_start];
590 file = dir_flist->files[cur_flist->parent_ndx];
591 fname = local_name ? local_name : f_name(file, fbuf);
593 if (DEBUG_GTE(RECV, 1))
594 rprintf(FINFO, "recv_files(%s)\n", fname);
596 if (daemon_filter_list.head && (*fname != '.' || fname[1] != '\0')) {
597 int filt_flags = S_ISDIR(file->mode) ? NAME_IS_DIR : NAME_IS_FILE;
598 if (check_filter(&daemon_filter_list, FLOG, fname, filt_flags) < 0) {
599 rprintf(FERROR, "ERROR: rejecting file transfer request for daemon excluded file: %s\n",
601 exit_cleanup(RERR_PROTOCOL);
605 #ifdef SUPPORT_XATTRS
606 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
607 && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE)))
608 recv_xattr_request(file, f_in);
611 if (!(iflags & ITEM_TRANSFER)) {
612 maybe_log_item(file, iflags, itemizing, xname);
613 #ifdef SUPPORT_XATTRS
614 if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers
615 && !BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
616 set_file_attrs(fname, file, NULL, fname, 0);
618 if (iflags & ITEM_IS_NEW) {
619 stats.created_files++;
620 if (S_ISREG(file->mode)) {
621 /* Nothing further to count. */
622 } else if (S_ISDIR(file->mode))
623 stats.created_dirs++;
625 else if (S_ISLNK(file->mode))
626 stats.created_symlinks++;
628 else if (IS_DEVICE(file->mode))
629 stats.created_devices++;
631 stats.created_specials++;
637 "got transfer request in phase 2 [%s]\n",
639 exit_cleanup(RERR_PROTOCOL);
642 if (file->flags & FLAG_FILE_SENT) {
643 if (csum_length == SHORT_SUM_LENGTH) {
644 if (keep_partial && !partial_dir)
645 make_backups = -make_backups; /* prevents double backup */
647 sparse_files = -sparse_files;
648 append_mode = -append_mode;
649 csum_length = SUM_LENGTH;
653 if (csum_length != SHORT_SUM_LENGTH) {
654 if (keep_partial && !partial_dir)
655 make_backups = -make_backups;
657 sparse_files = -sparse_files;
658 append_mode = -append_mode;
659 csum_length = SHORT_SUM_LENGTH;
662 if (iflags & ITEM_IS_NEW)
663 stats.created_files++;
667 set_current_file_index(file, ndx);
668 stats.xferred_files++;
669 stats.total_transferred_size += F_LENGTH(file);
671 cleanup_got_literal = 0;
676 : gen_wants_ndx(ndx, cur_flist->flist_num);
679 "(Skipping batched update for%s \"%s\")\n",
680 redoing ? " resend of" : "",
682 discard_receive_data(f_in, file);
683 file->flags |= FLAG_FILE_SENT;
688 remember_initial_stats();
690 if (!do_xfers) { /* log the transfer */
691 log_item(FCLIENT, file, iflags, NULL);
693 discard_receive_data(f_in, file);
696 if (write_batch < 0) {
697 log_item(FCLIENT, file, iflags, NULL);
699 discard_receive_data(f_in, file);
701 send_msg_int(MSG_SUCCESS, ndx);
705 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
707 if (protocol_version >= 29) {
708 switch (fnamecmp_type) {
712 case FNAMECMP_PARTIAL_DIR:
713 fnamecmp = partialptr;
715 case FNAMECMP_BACKUP:
716 fnamecmp = get_backup_name(fname);
720 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, file->dirname, xname);
721 fnamecmp = fnamecmpbuf;
726 if (fnamecmp_type > FNAMECMP_FUZZY && fnamecmp_type-FNAMECMP_FUZZY <= basis_dir_cnt) {
727 fnamecmp_type -= FNAMECMP_FUZZY + 1;
729 stringjoin(fnamecmpbuf, sizeof fnamecmpbuf,
730 basis_dir[fnamecmp_type], "/", file->dirname, "/", xname, NULL);
732 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], xname);
733 } else if (fnamecmp_type >= basis_dir_cnt) {
735 "invalid basis_dir index: %d.\n",
737 exit_cleanup(RERR_PROTOCOL);
739 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf, basis_dir[fnamecmp_type], fname);
740 fnamecmp = fnamecmpbuf;
743 if (!fnamecmp || (daemon_filter_list.head
744 && check_filter(&daemon_filter_list, FLOG, fnamecmp, 0) < 0)) {
746 fnamecmp_type = FNAMECMP_FNAME;
749 /* Reminder: --inplace && --partial-dir are never
750 * enabled at the same time. */
751 if (inplace && make_backups > 0) {
752 if (!(fnamecmp = get_backup_name(fname)))
755 fnamecmp_type = FNAMECMP_BACKUP;
756 } else if (partial_dir && partialptr)
757 fnamecmp = partialptr;
763 fd1 = do_open(fnamecmp, O_RDONLY, 0);
765 if (fd1 == -1 && protocol_version < 29) {
766 if (fnamecmp != fname) {
768 fnamecmp_type = FNAMECMP_FNAME;
769 fd1 = do_open(fnamecmp, O_RDONLY, 0);
772 if (fd1 == -1 && basis_dir[0]) {
773 /* pre-29 allowed only one alternate basis */
774 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
775 basis_dir[0], fname);
776 fnamecmp = fnamecmpbuf;
777 fnamecmp_type = FNAMECMP_BASIS_DIR_LOW;
778 fd1 = do_open(fnamecmp, O_RDONLY, 0);
782 one_inplace = inplace_partial && fnamecmp_type == FNAMECMP_PARTIAL_DIR;
783 updating_basis_or_equiv = one_inplace
784 || (inplace && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP));
789 } else if (do_fstat(fd1,&st) != 0) {
790 rsyserr(FERROR_XFER, errno, "fstat %s failed",
791 full_fname(fnamecmp));
792 discard_receive_data(f_in, file);
795 send_msg_int(MSG_NO_SEND, ndx);
799 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
800 /* this special handling for directories
801 * wouldn't be necessary if robust_rename()
802 * and the underlying robust_unlink could cope
805 rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
806 full_fname(fnamecmp));
807 discard_receive_data(f_in, file);
810 send_msg_int(MSG_NO_SEND, ndx);
814 if (write_devices && IS_DEVICE(st.st_mode)) {
815 if (fd1 != -1 && st.st_size == 0)
816 st.st_size = get_device_size(fd1, fname);
817 /* Mark the file entry as a device so that we don't try to truncate it later on. */
818 file->mode = S_IFBLK | (file->mode & ACCESSPERMS);
819 } else if (fd1 != -1 && !(S_ISREG(st.st_mode))) {
824 /* If we're not preserving permissions, change the file-list's
825 * mode based on the local permissions and some heuristics. */
826 if (!preserve_perms) {
827 int exists = fd1 != -1;
829 const char *dn = file->dirname ? file->dirname : ".";
830 if (parent_dirname != dn
831 && strcmp(parent_dirname, dn) != 0) {
832 dflt_perms = default_perms_for_dir(dn);
836 file->mode = dest_mode(file->mode, st.st_mode, dflt_perms, exists);
839 /* We now check to see if we are writing the file "inplace" */
840 if (inplace || one_inplace) {
841 fnametmp = one_inplace ? partialptr : fname;
842 fd2 = do_open(fnametmp, O_WRONLY|O_CREAT, 0600);
844 if (fd2 == -1 && errno == EACCES) {
845 /* Maybe the error was due to protected_regular setting? */
846 fd2 = do_open(fname, O_WRONLY, 0600);
850 rsyserr(FERROR_XFER, errno, "open %s failed",
851 full_fname(fnametmp));
852 } else if (updating_basis_or_equiv)
853 cleanup_set(NULL, NULL, file, fd1, fd2);
855 fnametmp = fnametmpbuf;
856 fd2 = open_tmpfile(fnametmp, fname, file);
858 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
862 discard_receive_data(f_in, file);
866 send_msg_int(MSG_NO_SEND, ndx);
870 /* log the transfer */
871 if (log_before_transfer)
872 log_item(FCLIENT, file, iflags, NULL);
873 else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
874 rprintf(FINFO, "%s\n", fname);
877 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size, fname, fd2, file, inplace || one_inplace);
879 log_item(log_code, file, iflags, NULL);
880 if (want_progress_now)
881 instant_progress(fname);
885 if (close(fd2) < 0) {
886 rsyserr(FERROR, errno, "close failed on %s",
887 full_fname(fnametmp));
888 exit_cleanup(RERR_FILEIO);
891 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
892 if (partialptr == fname)
894 if (!finish_transfer(fname, fnametmp, fnamecmp, partialptr, file, recv_ok, 1))
896 else if (fnamecmp == partialptr) {
898 do_unlink(partialptr);
899 handle_partial_dir(partialptr, PDIR_DELETE);
901 } else if (keep_partial && partialptr && (!one_inplace || delay_updates)) {
902 if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
904 "Unable to create partial-dir for %s -- discarding %s.\n",
905 local_name ? local_name : f_name(file, NULL),
906 recv_ok ? "completed file" : "partial file");
909 } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
910 file, recv_ok, !partial_dir))
912 else if (delay_updates && recv_ok) {
913 bitbag_set_bit(delayed_bits, ndx);
917 } else if (!one_inplace)
923 file->flags |= FLAG_FILE_SENT;
929 if (remove_source_files || inc_recurse
930 || (preserve_hard_links && F_IS_HLINKED(file)))
931 send_msg_int(MSG_SUCCESS, ndx);
934 enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
935 if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1) || stdout_format_has_i) {
936 char *errstr, *redostr, *keptstr;
937 if (!(keep_partial && partialptr) && !inplace)
938 keptstr = "discarded";
939 else if (partial_dir)
940 keptstr = "put into partial-dir";
942 keptstr = "retained";
943 if (msgtype == FERROR_XFER) {
948 redostr = read_batch ? " (may try again)"
949 : " (will try again)";
952 "%s: %s failed verification -- update %s%s.\n",
953 errstr, local_name ? f_name(file, NULL) : fname,
958 flist_ndx_push(&batch_redo_list, ndx);
959 send_msg_int(MSG_REDO, ndx);
960 file->flags |= FLAG_FILE_SENT;
961 } else if (inc_recurse)
962 send_msg_int(MSG_NO_SEND, ndx);
967 send_msg_int(MSG_NO_SEND, ndx);
971 if (make_backups < 0)
972 make_backups = -make_backups;
974 if (phase == 2 && delay_updates) /* for protocol_version < 29 */
975 handle_delayed_updates(local_name);
977 if (DEBUG_GTE(RECV, 1))
978 rprintf(FINFO,"recv_files finished\n");