summaryrefslogtreecommitdiff
path: root/receiver.c
blob: b342afa04d85b608d5d6de7be80bc5958c6a4c2a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
/*
 * Routines only used by the receiving process.
 *
 * Copyright (C) 1996-2000 Andrew Tridgell
 * Copyright (C) 1996 Paul Mackerras
 * Copyright (C) 2003-2008 Wayne Davison
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, visit the http://fsf.org website.
 */

#include "rsync.h"
#include "inums.h"

extern int dry_run;
extern int do_xfers;
extern int am_server;
extern int inc_recurse;
extern int log_before_transfer;
extern int stdout_format_has_i;
extern int logfile_format_has_i;
extern int csum_length;
extern int read_batch;
extern int write_batch;
extern int batch_gen_fd;
extern int protocol_version;
extern int relative_paths;
extern int preserve_hard_links;
extern int preserve_perms;
extern int preserve_xattrs;
extern int basis_dir_cnt;
extern int make_backups;
extern int cleanup_got_literal;
extern int remove_source_files;
extern int append_mode;
extern int sparse_files;
extern int keep_partial;
extern int checksum_len;
extern int checksum_seed;
extern int inplace;
extern int delay_updates;
extern mode_t orig_umask;
extern struct stats stats;
extern char *tmpdir;
extern char *partial_dir;
extern char *basis_dir[MAX_BASIS_DIRS+1];
extern char sender_file_sum[MAX_DIGEST_LEN];
extern struct file_list *cur_flist, *first_flist, *dir_flist;
extern struct filter_list_struct daemon_filter_list;

static struct bitbag *delayed_bits = NULL;
static int phase = 0, redoing = 0;
static flist_ndx_list batch_redo_list;
/* We're either updating the basis file or an identical copy: */
static int updating_basis_or_equiv;

/*
 * get_tmpname() - create a tmp filename for a given filename
 *
 *   If a tmpdir is defined, use that as the directory to
 *   put it in.  Otherwise, the tmp filename is in the same
 *   directory as the given name.  Note that there may be no
 *   directory at all in the given name!
 *
 *   The tmp filename is basically the given filename with a
 *   dot prepended, and .XXXXXX appended (for mkstemp() to
 *   put its unique gunk in).  Take care to not exceed
 *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
 *   the basename basically becomes 8 chars longer. In that
 *   case, the original name is shortened sufficiently to
 *   make it all fit.
 *
 *   Of course, there's no real reason for the tmp name to
 *   look like the original, except to satisfy us humans.
 *   As long as it's unique, rsync will work.
 */

int get_tmpname(char *fnametmp, const char *fname)
{
	int maxname, added, length = 0;
	const char *f;

	if (tmpdir) {
		/* Note: this can't overflow, so the return value is safe */
		length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
		fnametmp[length++] = '/';
	}

	if ((f = strrchr(fname, '/')) != NULL) {
		++f;
		if (!tmpdir) {
			length = f - fname;
			/* copy up to and including the slash */
			strlcpy(fnametmp, fname, length + 1);
		}
	} else
		f = fname;
	fnametmp[length++] = '.';

	/* The maxname value is bufsize, and includes space for the '\0'.
	 * (Note that NAME_MAX get -8 for the leading '.' above.) */
	maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);

	if (maxname < 1) {
		rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
		fnametmp[0] = '\0';
		return 0;
	}

	added = strlcpy(fnametmp + length, f, maxname);
	if (added >= maxname)
		added = maxname - 1;
	memcpy(fnametmp + length + added, ".XXXXXX", 8);

	return 1;
}

/* Opens a temporary file for writing.
 * Success: Writes name into fnametmp, returns fd.
 * Failure: Clobbers fnametmp, returns -1.
 * Calling cleanup_set() is the caller's job. */
int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
{
	int fd;

	if (!get_tmpname(fnametmp, fname))
		return -1;

	/* We initially set the perms without the setuid/setgid bits or group
	 * access to ensure that there is no race condition.  They will be
	 * correctly updated after the right owner and group info is set.
	 * (Thanks to snabb@epipe.fi for pointing this out.) */
	fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);

#if 0
	/* In most cases parent directories will already exist because their
	 * information should have been previously transferred, but that may
	 * not be the case with -R */
	if (fd == -1 && relative_paths && errno == ENOENT
	    && create_directory_path(fnametmp) == 0) {
		/* Get back to name with XXXXXX in it. */
		get_tmpname(fnametmp, fname);
		fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
	}
#endif

	if (fd == -1) {
		rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
			full_fname(fnametmp));
		return -1;
	}

	return fd;
}

static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
			const char *fname, int fd, OFF_T total_size)
{
	static char file_sum1[MAX_DIGEST_LEN];
	struct map_struct *mapbuf;
	struct sum_struct sum;
	int32 len;
	OFF_T offset = 0;
	OFF_T offset2;
	char *data;
	int32 i;
	char *map = NULL;

	read_sum_head(f_in, &sum);

	if (fd_r >= 0 && size_r > 0) {
		int32 read_size = MAX(sum.blength * 2, 16*1024);
		mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
		if (DEBUG_GTE(DELTASUM, 2)) {
			rprintf(FINFO, "recv mapped %s of size %s\n",
				fname_r, big_num(size_r));
		}
	} else
		mapbuf = NULL;

	sum_init(checksum_seed);

	if (append_mode > 0) {
		OFF_T j;
		sum.flength = (OFF_T)sum.count * sum.blength;
		if (sum.remainder)
			sum.flength -= sum.blength - sum.remainder;
		if (append_mode == 2) {
			for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
				if (INFO_GTE(PROGRESS, 1))
					show_progress(offset, total_size);
				sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
					   CHUNK_SIZE);
				offset = j;
			}
			if (offset < sum.flength) {
				int32 len = (int32)(sum.flength - offset);
				if (INFO_GTE(PROGRESS, 1))
					show_progress(offset, total_size);
				sum_update(map_ptr(mapbuf, offset, len), len);
			}
		}
		offset = sum.flength;
		if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
			rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s",
				full_fname(fname), big_num(j), big_num(offset));
			exit_cleanup(RERR_FILEIO);
		}
	}

	while ((i = recv_token(f_in, &data)) != 0) {
		if (INFO_GTE(PROGRESS, 1))
			show_progress(offset, total_size);

		if (i > 0) {
			if (DEBUG_GTE(DELTASUM, 3)) {
				rprintf(FINFO,"data recv %d at %s\n",
					i, big_num(offset));
			}

			stats.literal_data += i;
			cleanup_got_literal = 1;

			sum_update(data, i);

			if (fd != -1 && write_file(fd,data,i) != i)
				goto report_write_error;
			offset += i;
			continue;
		}

		i = -(i+1);
		offset2 = i * (OFF_T)sum.blength;
		len = sum.blength;
		if (i == (int)sum.count-1 && sum.remainder != 0)
			len = sum.remainder;

		stats.matched_data += len;

		if (DEBUG_GTE(DELTASUM, 3)) {
			rprintf(FINFO,
				"chunk[%d] of size %ld at %s offset=%s\n",
				i, (long)len, big_num(offset2), big_num(offset));
		}

		if (mapbuf) {
			map = map_ptr(mapbuf,offset2,len);

			see_token(map, len);
			sum_update(map, len);
		}

		if (updating_basis_or_equiv) {
			if (offset == offset2 && fd != -1) {
				OFF_T pos;
				if (flush_write_file(fd) < 0)
					goto report_write_error;
				offset += len;
				if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
					rsyserr(FERROR_XFER, errno,
						"lseek of %s returned %s, not %s",
						full_fname(fname),
						big_num(pos), big_num(offset));
					exit_cleanup(RERR_FILEIO);
				}
				continue;
			}
		}
		if (fd != -1 && map && write_file(fd, map, len) != (int)len)
			goto report_write_error;
		offset += len;
	}

	if (flush_write_file(fd) < 0)
		goto report_write_error;

#ifdef HAVE_FTRUNCATE
	if (inplace && fd != -1)
		ftruncate(fd, offset);
#endif

	if (INFO_GTE(PROGRESS, 1))
		end_progress(total_size);

	if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
	    report_write_error:
		rsyserr(FERROR_XFER, errno, "write failed on %s",
			full_fname(fname));
		exit_cleanup(RERR_FILEIO);
	}

	if (sum_end(file_sum1) != checksum_len)
		overflow_exit("checksum_len"); /* Impossible... */

	if (mapbuf)
		unmap_file(mapbuf);

	read_buf(f_in, sender_file_sum, checksum_len);
	if (DEBUG_GTE(DELTASUM, 2))
		rprintf(FINFO,"got file_sum\n");
	if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0)
		return 0;
	return 1;
}


static void discard_receive_data(int f_in, OFF_T length)
{
	receive_data(f_in, NULL, -1, 0, NULL, -1, length);
}

static void handle_delayed_updates(char *local_name)
{
	char *fname, *partialptr;
	int ndx;

	for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
		struct file_struct *file = cur_flist->files[ndx];
		fname = local_name ? local_name : f_name(file, NULL);
		if ((partialptr = partial_dir_fname(fname)) != NULL) {
			if (make_backups > 0 && !make_backup(fname))
				continue;
			if (DEBUG_GTE(RECV, 1)) {
				rprintf(FINFO, "renaming %s to %s\n",
					partialptr, fname);
			}
			/* We don't use robust_rename() here because the
			 * partial-dir must be on the same drive. */
			if (do_rename(partialptr, fname) < 0) {
				rsyserr(FERROR_XFER, errno,
					"rename failed for %s (from %s)",
					full_fname(fname), partialptr);
			} else {
				if (remove_source_files
				 || (preserve_hard_links && F_IS_HLINKED(file)))
					send_msg_int(MSG_SUCCESS, ndx);
				handle_partial_dir(partialptr, PDIR_DELETE);
			}
		}
	}
}

static void no_batched_update(int ndx, BOOL is_redo)
{
	struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
	struct file_struct *file = flist->files[ndx - flist->ndx_start];

	rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
		is_redo ? " resend of" : "", f_name(file, NULL));

	if (inc_recurse)
		send_msg_int(MSG_NO_SEND, ndx);
}

static int we_want_redo(int desired_ndx)
{
	static int redo_ndx = -1;

	while (redo_ndx < desired_ndx) {
		if (redo_ndx >= 0)
			no_batched_update(redo_ndx, True);
		if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
			return 0;
	}

	if (redo_ndx == desired_ndx) {
		redo_ndx = -1;
		return 1;
	}

	return 0;
}

static int gen_wants_ndx(int desired_ndx)
{
	static int next_ndx = -1;
	static BOOL got_eof = 0;

	if (got_eof)
		return 0;

	while (next_ndx < desired_ndx) {
		if (next_ndx >= 0)
			no_batched_update(next_ndx, False);
		if ((next_ndx = read_int(batch_gen_fd)) < 0) {
			got_eof = True;
			return 0;
		}
	}

	if (next_ndx == desired_ndx) {
		next_ndx = -1;
		return 1;
	}

	return 0;
}

/**
 * main routine for receiver process.
 *
 * Receiver process runs on the same host as the generator process. */
int recv_files(int f_in, char *local_name)
{
	int fd1,fd2;
	STRUCT_STAT st;
	int iflags, xlen;
	char *fname, fbuf[MAXPATHLEN];
	char xname[MAXPATHLEN];
	char fnametmp[MAXPATHLEN];
	char *fnamecmp, *partialptr;
	char fnamecmpbuf[MAXPATHLEN];
	uchar fnamecmp_type;
	struct file_struct *file;
	struct stats initial_stats;
	int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
	enum logcode log_code = log_before_transfer ? FLOG : FINFO;
	int max_phase = protocol_version >= 29 ? 2 : 1;
	int dflt_perms = (ACCESSPERMS & ~orig_umask);
#ifdef SUPPORT_ACLS
	const char *parent_dirname = "";
#endif
	int ndx, recv_ok;

	if (DEBUG_GTE(RECV, 1))
		rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);

	if (delay_updates)
		delayed_bits = bitbag_create(cur_flist->used + 1);

	while (1) {
		cleanup_disable();

		/* This call also sets cur_flist. */
		ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
					 xname, &xlen);
		if (ndx == NDX_DONE) {
			if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
				set_current_file_index(NULL, 0);
				end_progress(0);
			}
			if (inc_recurse && first_flist) {
				if (read_batch)
					gen_wants_ndx(first_flist->used + first_flist->ndx_start);
				flist_free(first_flist);
				if (first_flist)
					continue;
			} else if (read_batch && first_flist)
				gen_wants_ndx(first_flist->used);
			if (++phase > max_phase)
				break;
			if (DEBUG_GTE(RECV, 1))
				rprintf(FINFO, "recv_files phase=%d\n", phase);
			if (phase == 2 && delay_updates)
				handle_delayed_updates(local_name);
			send_msg(MSG_DONE, "", 0, 0);
			continue;
		}

		if (ndx - cur_flist->ndx_start >= 0)
			file = cur_flist->files[ndx - cur_flist->ndx_start];
		else
			file = dir_flist->files[cur_flist->parent_ndx];
		fname = local_name ? local_name : f_name(file, fbuf);

		if (DEBUG_GTE(RECV, 1))
			rprintf(FINFO, "recv_files(%s)\n", fname);

#ifdef SUPPORT_XATTRS
		if (iflags & ITEM_REPORT_XATTR && !dry_run)
			recv_xattr_request(file, f_in);
#endif

		if (!(iflags & ITEM_TRANSFER)) {
			maybe_log_item(file, iflags, itemizing, xname);
#ifdef SUPPORT_XATTRS
			if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
				set_file_attrs(fname, file, NULL, fname, 0);
#endif
			continue;
		}
		if (phase == 2) {
			rprintf(FERROR,
				"got transfer request in phase 2 [%s]\n",
				who_am_i());
			exit_cleanup(RERR_PROTOCOL);
		}

		if (file->flags & FLAG_FILE_SENT) {
			if (csum_length == SHORT_SUM_LENGTH) {
				if (keep_partial && !partial_dir)
					make_backups = -make_backups; /* prevents double backup */
				if (append_mode)
					sparse_files = -sparse_files;
				append_mode = -append_mode;
				csum_length = SUM_LENGTH;
				redoing = 1;
			}
		} else {
			if (csum_length != SHORT_SUM_LENGTH) {
				if (keep_partial && !partial_dir)
					make_backups = -make_backups;
				if (append_mode)
					sparse_files = -sparse_files;
				append_mode = -append_mode;
				csum_length = SHORT_SUM_LENGTH;
				redoing = 0;
			}
		}

		if (!am_server && INFO_GTE(PROGRESS, 1))
			set_current_file_index(file, ndx);
		stats.num_transferred_files++;
		stats.total_transferred_size += F_LENGTH(file);

		cleanup_got_literal = 0;

		if (daemon_filter_list.head
		    && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
			rprintf(FERROR, "attempt to hack rsync failed.\n");
			exit_cleanup(RERR_PROTOCOL);
		}

		if (!do_xfers) { /* log the transfer */
			log_item(FCLIENT, file, &stats, iflags, NULL);
			if (read_batch)
				discard_receive_data(f_in, F_LENGTH(file));
			continue;
		}
		if (write_batch < 0) {
			log_item(FCLIENT, file, &stats, iflags, NULL);
			if (!am_server)
				discard_receive_data(f_in, F_LENGTH(file));
			continue;
		}

		if (read_batch) {
			if (!(redoing ? we_want_redo(ndx) : gen_wants_ndx(ndx))) {
				rprintf(FINFO,
					"(Skipping batched update for%s \"%s\")\n",
					redoing ? " resend of" : "",
					fname);
				discard_receive_data(f_in, F_LENGTH(file));
				file->flags |= FLAG_FILE_SENT;
				continue;
			}
		}

		partialptr = partial_dir ? partial_dir_fname(fname) : fname;

		if (protocol_version >= 29) {
			switch (fnamecmp_type) {
			case FNAMECMP_FNAME:
				fnamecmp = fname;
				break;
			case FNAMECMP_PARTIAL_DIR:
				fnamecmp = partialptr;
				break;
			case FNAMECMP_BACKUP:
				fnamecmp = get_backup_name(fname);
				break;
			case FNAMECMP_FUZZY:
				if (file->dirname) {
					pathjoin(fnamecmpbuf, MAXPATHLEN,
						 file->dirname, xname);
					fnamecmp = fnamecmpbuf;
				} else
					fnamecmp = xname;
				break;
			default:
				if (fnamecmp_type >= basis_dir_cnt) {
					rprintf(FERROR,
						"invalid basis_dir index: %d.\n",
						fnamecmp_type);
					exit_cleanup(RERR_PROTOCOL);
				}
				pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
					 basis_dir[fnamecmp_type], fname);
				fnamecmp = fnamecmpbuf;
				break;
			}
			if (!fnamecmp || (daemon_filter_list.head
			  && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
				fnamecmp = fname;
				fnamecmp_type = FNAMECMP_FNAME;
			}
		} else {
			/* Reminder: --inplace && --partial-dir are never
			 * enabled at the same time. */
			if (inplace && make_backups > 0) {
				if (!(fnamecmp = get_backup_name(fname)))
					fnamecmp = fname;
				else
					fnamecmp_type = FNAMECMP_BACKUP;
			} else if (partial_dir && partialptr)
				fnamecmp = partialptr;
			else
				fnamecmp = fname;
		}

		initial_stats = stats;

		/* open the file */
		fd1 = do_open(fnamecmp, O_RDONLY, 0);

		if (fd1 == -1 && protocol_version < 29) {
			if (fnamecmp != fname) {
				fnamecmp = fname;
				fd1 = do_open(fnamecmp, O_RDONLY, 0);
			}

			if (fd1 == -1 && basis_dir[0]) {
				/* pre-29 allowed only one alternate basis */
				pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
					 basis_dir[0], fname);
				fnamecmp = fnamecmpbuf;
				fd1 = do_open(fnamecmp, O_RDONLY, 0);
			}
		}

		updating_basis_or_equiv = inplace
		    && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);

		if (fd1 == -1) {
			st.st_mode = 0;
			st.st_size = 0;
		} else if (do_fstat(fd1,&st) != 0) {
			rsyserr(FERROR_XFER, errno, "fstat %s failed",
				full_fname(fnamecmp));
			discard_receive_data(f_in, F_LENGTH(file));
			close(fd1);
			if (inc_recurse)
				send_msg_int(MSG_NO_SEND, ndx);
			continue;
		}

		if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
			/* this special handling for directories
			 * wouldn't be necessary if robust_rename()
			 * and the underlying robust_unlink could cope
			 * with directories
			 */
			rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
				full_fname(fnamecmp));
			discard_receive_data(f_in, F_LENGTH(file));
			close(fd1);
			if (inc_recurse)
				send_msg_int(MSG_NO_SEND, ndx);
			continue;
		}

		if (fd1 != -1 && !S_ISREG(st.st_mode)) {
			close(fd1);
			fd1 = -1;
		}

		/* If we're not preserving permissions, change the file-list's
		 * mode based on the local permissions and some heuristics. */
		if (!preserve_perms) {
			int exists = fd1 != -1;
#ifdef SUPPORT_ACLS
			const char *dn = file->dirname ? file->dirname : ".";
			if (parent_dirname != dn
			 && strcmp(parent_dirname, dn) != 0) {
				dflt_perms = default_perms_for_dir(dn);
				parent_dirname = dn;
			}
#endif
			file->mode = dest_mode(file->mode, st.st_mode,
					       dflt_perms, exists);
		}

		/* We now check to see if we are writing the file "inplace" */
		if (inplace)  {
			fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
			if (fd2 == -1) {
				rsyserr(FERROR_XFER, errno, "open %s failed",
					full_fname(fname));
			}
		} else {
			fd2 = open_tmpfile(fnametmp, fname, file);
			if (fd2 != -1)
				cleanup_set(fnametmp, partialptr, file, fd1, fd2);
		}

		if (fd2 == -1) {
			discard_receive_data(f_in, F_LENGTH(file));
			if (fd1 != -1)
				close(fd1);
			if (inc_recurse)
				send_msg_int(MSG_NO_SEND, ndx);
			continue;
		}

		/* log the transfer */
		if (log_before_transfer)
			log_item(FCLIENT, file, &initial_stats, iflags, NULL);
		else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
			rprintf(FINFO, "%s\n", fname);

		/* recv file data */
		recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
				       fname, fd2, F_LENGTH(file));

		log_item(log_code, file, &initial_stats, iflags, NULL);

		if (fd1 != -1)
			close(fd1);
		if (close(fd2) < 0) {
			rsyserr(FERROR, errno, "close failed on %s",
				full_fname(fnametmp));
			exit_cleanup(RERR_FILEIO);
		}

		if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
			if (partialptr == fname)
				partialptr = NULL;
			if (!finish_transfer(fname, fnametmp, fnamecmp,
					     partialptr, file, recv_ok, 1))
				recv_ok = -1;
			else if (fnamecmp == partialptr) {
				do_unlink(partialptr);
				handle_partial_dir(partialptr, PDIR_DELETE);
			}
		} else if (keep_partial && partialptr) {
			if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
				rprintf(FERROR,
				    "Unable to create partial-dir for %s -- discarding %s.\n",
				    local_name ? local_name : f_name(file, NULL),
				    recv_ok ? "completed file" : "partial file");
				do_unlink(fnametmp);
				recv_ok = -1;
			} else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
						    file, recv_ok, !partial_dir))
				recv_ok = -1;
			else if (delay_updates && recv_ok) {
				bitbag_set_bit(delayed_bits, ndx);
				recv_ok = 2;
			} else
				partialptr = NULL;
		} else
			do_unlink(fnametmp);

		cleanup_disable();

		if (read_batch)
			file->flags |= FLAG_FILE_SENT;

		switch (recv_ok) {
		case 2:
			break;
		case 1:
			if (remove_source_files || inc_recurse
			 || (preserve_hard_links && F_IS_HLINKED(file)))
				send_msg_int(MSG_SUCCESS, ndx);
			break;
		case 0: {
			enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
			if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) {
				char *errstr, *redostr, *keptstr;
				if (!(keep_partial && partialptr) && !inplace)
					keptstr = "discarded";
				else if (partial_dir)
					keptstr = "put into partial-dir";
				else
					keptstr = "retained";
				if (msgtype == FERROR_XFER) {
					errstr = "ERROR";
					redostr = "";
				} else {
					errstr = "WARNING";
					redostr = read_batch ? " (may try again)"
							     : " (will try again)";
				}
				rprintf(msgtype,
					"%s: %s failed verification -- update %s%s.\n",
					errstr, local_name ? f_name(file, NULL) : fname,
					keptstr, redostr);
			}
			if (!redoing) {
				if (read_batch)
					flist_ndx_push(&batch_redo_list, ndx);
				send_msg_int(MSG_REDO, ndx);
				file->flags |= FLAG_FILE_SENT;
			} else if (inc_recurse)
				send_msg_int(MSG_NO_SEND, ndx);
			break;
		    }
		case -1:
			if (inc_recurse)
				send_msg_int(MSG_NO_SEND, ndx);
			break;
		}
	}
	if (make_backups < 0)
		make_backups = -make_backups;

	if (phase == 2 && delay_updates) /* for protocol_version < 29 */
		handle_delayed_updates(local_name);

	if (DEBUG_GTE(RECV, 1))
		rprintf(FINFO,"recv_files finished\n");

	return 0;
}