When rsync encountered an empty file list, it behaved differently
[rsync.git] / receiver.c
1 /* -*- c-file-style: "linux" -*-
2
3    Copyright (C) 1996-2000 by Andrew Tridgell
4    Copyright (C) Paul Mackerras 1996
5
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.
10
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.
15
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.
19 */
20
21 #include "rsync.h"
22
23 extern int verbose;
24 extern int do_xfers;
25 extern int am_daemon;
26 extern int am_server;
27 extern int do_progress;
28 extern int log_before_transfer;
29 extern int log_format_has_i;
30 extern int daemon_log_format_has_i;
31 extern int csum_length;
32 extern int read_batch;
33 extern int write_batch;
34 extern int batch_gen_fd;
35 extern int protocol_version;
36 extern int relative_paths;
37 extern int keep_dirlinks;
38 extern int preserve_hard_links;
39 extern int preserve_perms;
40 extern int io_error;
41 extern int basis_dir_cnt;
42 extern int make_backups;
43 extern int cleanup_got_literal;
44 extern int remove_sent_files;
45 extern int module_id;
46 extern int ignore_errors;
47 extern int orig_umask;
48 extern int keep_partial;
49 extern int checksum_seed;
50 extern int inplace;
51 extern int delay_updates;
52 extern struct stats stats;
53 extern char *log_format;
54 extern char *tmpdir;
55 extern char *partial_dir;
56 extern char *basis_dir[];
57 extern struct file_list *the_file_list;
58 extern struct filter_list_struct server_filter_list;
59
60 #define SLOT_SIZE       (16*1024)       /* Desired size in bytes */
61 #define PER_SLOT_BITS   (SLOT_SIZE * 8) /* Number of bits per slot */
62 #define PER_SLOT_INTS   (SLOT_SIZE / 4) /* Number of int32s per slot */
63
64 static uint32 **delayed_bits = NULL;
65 static int delayed_slot_cnt = 0;
66 static int phase = 0;
67
68 static void init_delayed_bits(int max_ndx)
69 {
70         delayed_slot_cnt = (max_ndx + PER_SLOT_BITS - 1) / PER_SLOT_BITS;
71
72         if (!(delayed_bits = (uint32**)calloc(delayed_slot_cnt, sizeof (uint32*))))
73                 out_of_memory("set_delayed_bit");
74 }
75
76 static void set_delayed_bit(int ndx)
77 {
78         int slot = ndx / PER_SLOT_BITS;
79         ndx %= PER_SLOT_BITS;
80
81         if (!delayed_bits[slot]) {
82                 if (!(delayed_bits[slot] = (uint32*)calloc(PER_SLOT_INTS, 4)))
83                         out_of_memory("set_delayed_bit");
84         }
85
86         delayed_bits[slot][ndx/32] |= 1u << (ndx % 32);
87 }
88
89 /* Call this with -1 to start checking from 0.  Returns -1 at the end. */
90 static int next_delayed_bit(int after)
91 {
92         uint32 bits, mask;
93         int i, ndx = after + 1;
94         int slot = ndx / PER_SLOT_BITS;
95         ndx %= PER_SLOT_BITS;
96
97         mask = (1u << (ndx % 32)) - 1;
98         for (i = ndx / 32; slot < delayed_slot_cnt; slot++, i = mask = 0) {
99                 if (!delayed_bits[slot])
100                         continue;
101                 for ( ; i < PER_SLOT_INTS; i++, mask = 0) {
102                         if (!(bits = delayed_bits[slot][i] & ~mask))
103                                 continue;
104                         /* The xor magic figures out the lowest enabled bit in
105                          * bits, and the switch quickly computes log2(bit). */
106                         switch (bits ^ (bits & (bits-1))) {
107 #define LOG2(n) case 1u << n: return slot*PER_SLOT_BITS + i*32 + n
108                             LOG2(0);  LOG2(1);  LOG2(2);  LOG2(3);
109                             LOG2(4);  LOG2(5);  LOG2(6);  LOG2(7);
110                             LOG2(8);  LOG2(9);  LOG2(10); LOG2(11);
111                             LOG2(12); LOG2(13); LOG2(14); LOG2(15);
112                             LOG2(16); LOG2(17); LOG2(18); LOG2(19);
113                             LOG2(20); LOG2(21); LOG2(22); LOG2(23);
114                             LOG2(24); LOG2(25); LOG2(26); LOG2(27);
115                             LOG2(28); LOG2(29); LOG2(30); LOG2(31);
116                         }
117                         return -1; /* impossible... */
118                 }
119         }
120
121         return -1;
122 }
123
124
125 /*
126  * get_tmpname() - create a tmp filename for a given filename
127  *
128  *   If a tmpdir is defined, use that as the directory to
129  *   put it in.  Otherwise, the tmp filename is in the same
130  *   directory as the given name.  Note that there may be no
131  *   directory at all in the given name!
132  *
133  *   The tmp filename is basically the given filename with a
134  *   dot prepended, and .XXXXXX appended (for mkstemp() to
135  *   put its unique gunk in).  Take care to not exceed
136  *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
137  *   the basename basically becomes 8 chars longer. In that
138  *   case, the original name is shortened sufficiently to
139  *   make it all fit.
140  *
141  *   Of course, there's no real reason for the tmp name to
142  *   look like the original, except to satisfy us humans.
143  *   As long as it's unique, rsync will work.
144  */
145
146 static int get_tmpname(char *fnametmp, char *fname)
147 {
148         char *f;
149         int     length = 0;
150         int     maxname;
151
152         if (tmpdir) {
153                 /* Note: this can't overflow, so the return value is safe */
154                 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
155                 fnametmp[length++] = '/';
156                 fnametmp[length] = '\0';        /* always NULL terminated */
157         }
158
159         if ((f = strrchr(fname, '/')) != NULL) {
160                 ++f;
161                 if (!tmpdir) {
162                         length = f - fname;
163                         /* copy up to and including the slash */
164                         strlcpy(fnametmp, fname, length + 1);
165                 }
166         } else
167                 f = fname;
168         fnametmp[length++] = '.';
169         fnametmp[length] = '\0';                /* always NULL terminated */
170
171         maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
172
173         if (maxname < 1) {
174                 rprintf(FERROR, "temporary filename too long: %s\n",
175                         safe_fname(fname));
176                 fnametmp[0] = '\0';
177                 return 0;
178         }
179
180         strlcpy(fnametmp + length, f, maxname);
181         strcat(fnametmp + length, ".XXXXXX");
182
183         return 1;
184 }
185
186
187 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
188                         char *fname, int fd, OFF_T total_size)
189 {
190         static char file_sum1[MD4_SUM_LENGTH];
191         static char file_sum2[MD4_SUM_LENGTH];
192         struct map_struct *mapbuf;
193         struct sum_struct sum;
194         int32 len;
195         OFF_T offset = 0;
196         OFF_T offset2;
197         char *data;
198         int32 i;
199         char *map = NULL;
200
201         read_sum_head(f_in, &sum);
202
203         if (fd_r >= 0 && size_r > 0) {
204                 int32 read_size = MAX(sum.blength * 2, 16*1024);
205                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
206                 if (verbose > 2) {
207                         rprintf(FINFO, "recv mapped %s of size %.0f\n",
208                                 safe_fname(fname_r), (double)size_r);
209                 }
210         } else
211                 mapbuf = NULL;
212
213         sum_init(checksum_seed);
214
215         while ((i = recv_token(f_in, &data)) != 0) {
216                 if (do_progress)
217                         show_progress(offset, total_size);
218
219                 if (i > 0) {
220                         if (verbose > 3) {
221                                 rprintf(FINFO,"data recv %d at %.0f\n",
222                                         i,(double)offset);
223                         }
224
225                         stats.literal_data += i;
226                         cleanup_got_literal = 1;
227
228                         sum_update(data, i);
229
230                         if (fd != -1 && write_file(fd,data,i) != i)
231                                 goto report_write_error;
232                         offset += i;
233                         continue;
234                 }
235
236                 i = -(i+1);
237                 offset2 = i * (OFF_T)sum.blength;
238                 len = sum.blength;
239                 if (i == (int)sum.count-1 && sum.remainder != 0)
240                         len = sum.remainder;
241
242                 stats.matched_data += len;
243
244                 if (verbose > 3) {
245                         rprintf(FINFO,
246                                 "chunk[%d] of size %ld at %.0f offset=%.0f\n",
247                                 i, (long)len, (double)offset2, (double)offset);
248                 }
249
250                 if (mapbuf) {
251                         map = map_ptr(mapbuf,offset2,len);
252
253                         see_token(map, len);
254                         sum_update(map, len);
255                 }
256
257                 if (inplace) {
258                         if (offset == offset2 && fd != -1) {
259                                 if (flush_write_file(fd) < 0)
260                                         goto report_write_error;
261                                 offset += len;
262                                 if (do_lseek(fd, len, SEEK_CUR) != offset) {
263                                         rsyserr(FERROR, errno,
264                                                 "lseek failed on %s",
265                                                 full_fname(fname));
266                                         exit_cleanup(RERR_FILEIO);
267                                 }
268                                 continue;
269                         }
270                 }
271                 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
272                         goto report_write_error;
273                 offset += len;
274         }
275
276         if (flush_write_file(fd) < 0)
277                 goto report_write_error;
278
279 #ifdef HAVE_FTRUNCATE
280         if (inplace && fd != -1)
281                 ftruncate(fd, offset);
282 #endif
283
284         if (do_progress)
285                 end_progress(total_size);
286
287         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
288             report_write_error:
289                 rsyserr(FERROR, errno, "write failed on %s",
290                         full_fname(fname));
291                 exit_cleanup(RERR_FILEIO);
292         }
293
294         sum_end(file_sum1);
295
296         if (mapbuf)
297                 unmap_file(mapbuf);
298
299         read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
300         if (verbose > 2)
301                 rprintf(FINFO,"got file_sum\n");
302         if (fd != -1 && memcmp(file_sum1, file_sum2, MD4_SUM_LENGTH) != 0)
303                 return 0;
304         return 1;
305 }
306
307
308 static void discard_receive_data(int f_in, OFF_T length)
309 {
310         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
311 }
312
313 static void handle_delayed_updates(struct file_list *flist, char *local_name)
314 {
315         char *fname, *partialptr, numbuf[4];
316         int i;
317
318         for (i = -1; (i = next_delayed_bit(i)) >= 0; ) {
319                 struct file_struct *file = flist->files[i];
320                 fname = local_name ? local_name : f_name(file);
321                 if ((partialptr = partial_dir_fname(fname)) != NULL) {
322                         if (make_backups && !make_backup(fname))
323                                 continue;
324                         if (verbose > 2) {
325                                 rprintf(FINFO, "renaming %s to %s\n",
326                                         safe_fname(partialptr),
327                                         safe_fname(fname));
328                         }
329                         if (do_rename(partialptr, fname) < 0) {
330                                 rsyserr(FERROR, errno,
331                                         "rename failed for %s (from %s)",
332                                         full_fname(fname),
333                                         safe_fname(partialptr));
334                         } else {
335                                 if (remove_sent_files
336                                     || (preserve_hard_links
337                                      && file->link_u.links)) {
338                                         SIVAL(numbuf, 0, i);
339                                         send_msg(MSG_SUCCESS,numbuf,4);
340                                 }
341                                 handle_partial_dir(partialptr,
342                                                    PDIR_DELETE);
343                         }
344                 }
345         }
346 }
347
348 static int get_next_gen_i(int batch_gen_fd, int next_gen_i, int desired_i)
349 {
350         while (next_gen_i < desired_i) {
351                 if (next_gen_i >= 0) {
352                         rprintf(FINFO,
353                                 "(No batched update for%s \"%s\")\n",
354                                 phase ? " resend of" : "",
355                                 safe_fname(f_name(the_file_list->files[next_gen_i])));
356                 }
357                 next_gen_i = read_int(batch_gen_fd);
358                 if (next_gen_i == -1)
359                         next_gen_i = the_file_list->count;
360         }
361         return next_gen_i;
362 }
363
364
365 /**
366  * main routine for receiver process.
367  *
368  * Receiver process runs on the same host as the generator process. */
369 int recv_files(int f_in, struct file_list *flist, char *local_name)
370 {
371         int next_gen_i = -1;
372         int fd1,fd2;
373         STRUCT_STAT st;
374         int iflags, xlen;
375         char *fname, fbuf[MAXPATHLEN];
376         char xname[MAXPATHLEN];
377         char fnametmp[MAXPATHLEN];
378         char *fnamecmp, *partialptr, numbuf[4];
379         char fnamecmpbuf[MAXPATHLEN];
380         uchar fnamecmp_type;
381         struct file_struct *file;
382         struct stats initial_stats;
383         int save_make_backups = make_backups;
384         int itemizing = am_daemon ? daemon_log_format_has_i
385                       : !am_server && log_format_has_i;
386         int max_phase = protocol_version >= 29 ? 2 : 1;
387         int i, recv_ok;
388
389         if (verbose > 2)
390                 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
391
392         if (flist->hlink_pool) {
393                 pool_destroy(flist->hlink_pool);
394                 flist->hlink_pool = NULL;
395         }
396
397         if (delay_updates)
398                 init_delayed_bits(flist->count);
399
400         while (1) {
401                 cleanup_disable();
402
403                 i = read_int(f_in);
404                 if (i == -1) {
405                         if (read_batch) {
406                                 get_next_gen_i(batch_gen_fd, next_gen_i,
407                                                flist->count);
408                                 next_gen_i = -1;
409                         }
410                         if (++phase > max_phase)
411                                 break;
412                         csum_length = SUM_LENGTH;
413                         if (verbose > 2)
414                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
415                         if (phase == 2 && delay_updates)
416                                 handle_delayed_updates(flist, local_name);
417                         send_msg(MSG_DONE, "", 0);
418                         if (keep_partial && !partial_dir)
419                                 make_backups = 0; /* prevents double backup */
420                         continue;
421                 }
422
423                 iflags = read_item_attrs(f_in, -1, i, &fnamecmp_type,
424                                          xname, &xlen);
425                 if (iflags == ITEM_IS_NEW) /* no-op packet */
426                         continue;
427
428                 file = flist->files[i];
429                 fname = local_name ? local_name : f_name_to(file, fbuf);
430
431                 if (verbose > 2)
432                         rprintf(FINFO, "recv_files(%s)\n", safe_fname(fname));
433
434                 if (!(iflags & ITEM_TRANSFER)) {
435                         maybe_log_item(file, iflags, itemizing, xname);
436                         continue;
437                 }
438                 if (phase == 2) {
439                         rprintf(FERROR,
440                                 "got transfer request in phase 2 [%s]\n",
441                                 who_am_i());
442                         exit_cleanup(RERR_PROTOCOL);
443                 }
444
445                 stats.current_file_index = i;
446                 stats.num_transferred_files++;
447                 stats.total_transferred_size += file->length;
448                 cleanup_got_literal = 0;
449
450                 if (server_filter_list.head
451                     && check_filter(&server_filter_list, fname, 0) < 0) {
452                         rprintf(FERROR, "attempt to hack rsync failed.\n");
453                         exit_cleanup(RERR_PROTOCOL);
454                 }
455
456                 if (!do_xfers) { /* log the transfer */
457                         if (!am_server && log_format)
458                                 log_item(file, &stats, iflags, NULL);
459                         if (read_batch)
460                                 discard_receive_data(f_in, file->length);
461                         continue;
462                 }
463                 if (write_batch < 0) {
464                         log_item(file, &stats, iflags, NULL);
465                         if (!am_server)
466                                 discard_receive_data(f_in, file->length);
467                         continue;
468                 }
469
470                 if (read_batch) {
471                         next_gen_i = get_next_gen_i(batch_gen_fd, next_gen_i, i);
472                         if (i < next_gen_i) {
473                                 rprintf(FINFO, "(Skipping batched update for \"%s\")\n",
474                                         safe_fname(fname));
475                                 discard_receive_data(f_in, file->length);
476                                 continue;
477                         }
478                         next_gen_i = -1;
479                 }
480
481                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
482
483                 if (protocol_version >= 29) {
484                         switch (fnamecmp_type) {
485                         case FNAMECMP_FNAME:
486                                 fnamecmp = fname;
487                                 break;
488                         case FNAMECMP_PARTIAL_DIR:
489                                 fnamecmp = partialptr;
490                                 break;
491                         case FNAMECMP_BACKUP:
492                                 fnamecmp = get_backup_name(fname);
493                                 break;
494                         case FNAMECMP_FUZZY:
495                                 if (file->dirname) {
496                                         pathjoin(fnamecmpbuf, MAXPATHLEN,
497                                                  file->dirname, xname);
498                                         fnamecmp = fnamecmpbuf;
499                                 } else
500                                         fnamecmp = xname;
501                                 break;
502                         default:
503                                 if (fnamecmp_type >= basis_dir_cnt) {
504                                         rprintf(FERROR,
505                                                 "invalid basis_dir index: %d.\n",
506                                                 fnamecmp_type);
507                                         exit_cleanup(RERR_PROTOCOL);
508                                 }
509                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
510                                          basis_dir[fnamecmp_type], fname);
511                                 fnamecmp = fnamecmpbuf;
512                                 break;
513                         }
514                         if (!fnamecmp || (server_filter_list.head
515                           && check_filter(&server_filter_list, fname, 0) < 0))
516                                 fnamecmp = fname;
517                 } else {
518                         /* Reminder: --inplace && --partial-dir are never
519                          * enabled at the same time. */
520                         if (inplace && make_backups) {
521                                 if (!(fnamecmp = get_backup_name(fname)))
522                                         fnamecmp = fname;
523                         } else if (partial_dir && partialptr)
524                                 fnamecmp = partialptr;
525                         else
526                                 fnamecmp = fname;
527                 }
528
529                 initial_stats = stats;
530
531                 /* open the file */
532                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
533
534                 if (fd1 == -1 && protocol_version < 29) {
535                         if (fnamecmp != fname) {
536                                 fnamecmp = fname;
537                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
538                         }
539
540                         if (fd1 == -1 && basis_dir[0]) {
541                                 /* pre-29 allowed only one alternate basis */
542                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
543                                          basis_dir[0], fname);
544                                 fnamecmp = fnamecmpbuf;
545                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
546                         }
547                 }
548
549                 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
550                         rsyserr(FERROR, errno, "fstat %s failed",
551                                 full_fname(fnamecmp));
552                         discard_receive_data(f_in, file->length);
553                         close(fd1);
554                         continue;
555                 }
556
557                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
558                         /* this special handling for directories
559                          * wouldn't be necessary if robust_rename()
560                          * and the underlying robust_unlink could cope
561                          * with directories
562                          */
563                         rprintf(FERROR,"recv_files: %s is a directory\n",
564                                 full_fname(fnamecmp));
565                         discard_receive_data(f_in, file->length);
566                         close(fd1);
567                         continue;
568                 }
569
570                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
571                         close(fd1);
572                         fd1 = -1;
573                 }
574
575                 if (fd1 != -1 && !preserve_perms) {
576                         /* if the file exists already and we aren't preserving
577                          * permissions then act as though the remote end sent
578                          * us the file permissions we already have */
579                         file->mode = st.st_mode;
580                 }
581
582                 /* We now check to see if we are writing file "inplace" */
583                 if (inplace)  {
584                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0);
585                         if (fd2 == -1) {
586                                 rsyserr(FERROR, errno, "open %s failed",
587                                         full_fname(fname));
588                                 discard_receive_data(f_in, file->length);
589                                 if (fd1 != -1)
590                                         close(fd1);
591                                 continue;
592                         }
593                 } else {
594                         if (!get_tmpname(fnametmp,fname)) {
595                                 discard_receive_data(f_in, file->length);
596                                 if (fd1 != -1)
597                                         close(fd1);
598                                 continue;
599                         }
600
601                         /* we initially set the perms without the
602                          * setuid/setgid bits to ensure that there is no race
603                          * condition. They are then correctly updated after
604                          * the lchown. Thanks to snabb@epipe.fi for pointing
605                          * this out.  We also set it initially without group
606                          * access because of a similar race condition. */
607                         fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
608
609                         /* in most cases parent directories will already exist
610                          * because their information should have been previously
611                          * transferred, but that may not be the case with -R */
612                         if (fd2 == -1 && relative_paths && errno == ENOENT
613                             && create_directory_path(fnametmp, orig_umask) == 0) {
614                                 /* Get back to name with XXXXXX in it. */
615                                 get_tmpname(fnametmp, fname);
616                                 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
617                         }
618                         if (fd2 == -1) {
619                                 rsyserr(FERROR, errno, "mkstemp %s failed",
620                                         full_fname(fnametmp));
621                                 discard_receive_data(f_in, file->length);
622                                 if (fd1 != -1)
623                                         close(fd1);
624                                 continue;
625                         }
626
627                         if (partialptr)
628                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
629                 }
630
631                 /* log the transfer */
632                 if (log_before_transfer)
633                         log_item(file, &initial_stats, iflags, NULL);
634                 else if (!am_server && verbose && do_progress)
635                         rprintf(FINFO, "%s\n", safe_fname(fname));
636
637                 /* recv file data */
638                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
639                                        fname, fd2, file->length);
640
641                 if (!log_before_transfer)
642                         log_item(file, &initial_stats, iflags, NULL);
643
644                 if (fd1 != -1)
645                         close(fd1);
646                 if (close(fd2) < 0) {
647                         rsyserr(FERROR, errno, "close failed on %s",
648                                 full_fname(fnametmp));
649                         exit_cleanup(RERR_FILEIO);
650                 }
651
652                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
653                         finish_transfer(fname, fnametmp, file, recv_ok, 1);
654                         if (partialptr != fname && fnamecmp == partialptr) {
655                                 do_unlink(partialptr);
656                                 handle_partial_dir(partialptr, PDIR_DELETE);
657                         }
658                 } else if (keep_partial && partialptr
659                     && handle_partial_dir(partialptr, PDIR_CREATE)) {
660                         finish_transfer(partialptr, fnametmp, file, recv_ok,
661                                         !partial_dir);
662                         if (delay_updates && recv_ok) {
663                                 set_delayed_bit(i);
664                                 recv_ok = -1;
665                         }
666                 } else {
667                         partialptr = NULL;
668                         do_unlink(fnametmp);
669                 }
670
671                 cleanup_disable();
672
673                 if (recv_ok > 0) {
674                         if (remove_sent_files
675                             || (preserve_hard_links && file->link_u.links)) {
676                                 SIVAL(numbuf, 0, i);
677                                 send_msg(MSG_SUCCESS, numbuf, 4);
678                         }
679                 } else if (!recv_ok) {
680                         int msgtype = phase || read_batch ? FERROR : FINFO;
681                         if (msgtype == FERROR || verbose) {
682                                 char *errstr, *redostr, *keptstr;
683                                 if (!(keep_partial && partialptr) && !inplace)
684                                         keptstr = "discarded";
685                                 else if (partial_dir)
686                                         keptstr = "put into partial-dir";
687                                 else
688                                         keptstr = "retained";
689                                 if (msgtype == FERROR) {
690                                         errstr = "ERROR";
691                                         redostr = "";
692                                 } else {
693                                         errstr = "WARNING";
694                                         redostr = " (will try again)";
695                                 }
696                                 rprintf(msgtype,
697                                         "%s: %s failed verification -- update %s%s.\n",
698                                         errstr, safe_fname(fname),
699                                         keptstr, redostr);
700                         }
701                         if (!phase) {
702                                 SIVAL(numbuf, 0, i);
703                                 send_msg(MSG_REDO, numbuf, 4);
704                         }
705                 }
706         }
707         make_backups = save_make_backups;
708
709         if (phase == 2 && delay_updates) /* for protocol_version < 29 */
710                 handle_delayed_updates(flist, local_name);
711
712         if (verbose > 2)
713                 rprintf(FINFO,"recv_files finished\n");
714
715         return 0;
716 }