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 dry_run;
  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 batch_gen_fd;
  34 extern int protocol_version;
  35 extern int relative_paths;
  36 extern int keep_dirlinks;
  37 extern int preserve_hard_links;
  38 extern int preserve_perms;
  39 extern int io_error;
  40 extern int basis_dir_cnt;
  41 extern int make_backups;
  42 extern int cleanup_got_literal;
  43 extern int remove_sent_files;
  44 extern int module_id;
  45 extern int ignore_errors;
  46 extern int orig_umask;
  47 extern int keep_partial;
  48 extern int checksum_seed;
  49 extern int inplace;
  50 extern int delay_updates;
  51 extern struct stats stats;
  52 extern char *log_format;
  53 extern char *tmpdir;
  54 extern char *partial_dir;
  55 extern char *basis_dir[];
  56
  57 extern struct filter_list_struct server_filter_list;
  58
  59 #define SLOT_SIZE       (16*1024)       /* Desired size in bytes */
  60 #define PER_SLOT_BITS   (SLOT_SIZE * 8) /* Number of bits per slot */
  61 #define PER_SLOT_INTS   (SLOT_SIZE / 4) /* Number of int32s per slot */
  62
  63 static uint32 **delayed_bits = NULL;
  64 static int delayed_slot_cnt = 0;
  65
  66 static void init_delayed_bits(int max_ndx)
  67 {
  68         delayed_slot_cnt = (max_ndx + PER_SLOT_BITS - 1) / PER_SLOT_BITS;
  69
  70         if (!(delayed_bits = (uint32**)calloc(delayed_slot_cnt, sizeof (uint32*))))
  71                 out_of_memory("set_delayed_bit");
  72 }
  73
  74 static void set_delayed_bit(int ndx)
  75 {
  76         int slot = ndx / PER_SLOT_BITS;
  77         ndx %= PER_SLOT_BITS;
  78
  79         if (!delayed_bits[slot]) {
  80                 if (!(delayed_bits[slot] = (uint32*)calloc(PER_SLOT_INTS, 4)))
  81                         out_of_memory("set_delayed_bit");
  82         }
  83
  84         delayed_bits[slot][ndx/32] |= 1u << (ndx % 32);
  85 }
  86
  87 /* Call this with -1 to start checking from 0.  Returns -1 at the end. */
  88 static int next_delayed_bit(int after)
  89 {
  90         uint32 bits, mask;
  91         int i, ndx = after + 1;
  92         int slot = ndx / PER_SLOT_BITS;
  93         ndx %= PER_SLOT_BITS;
  94
  95         mask = (1u << (ndx % 32)) - 1;
  96         for (i = ndx / 32; slot < delayed_slot_cnt; slot++, i = mask = 0) {
  97                 if (!delayed_bits[slot])
  98                         continue;
  99                 for ( ; i < PER_SLOT_INTS; i++, mask = 0) {
 100                         if (!(bits = delayed_bits[slot][i] & ~mask))
 101                                 continue;
 102                         /* The xor magic figures out the lowest enabled bit in
 103                          * bits, and the switch quickly computes log2(bit). */
 104                         switch (bits ^ (bits & (bits-1))) {
 105 #define LOG2(n) case 1u << n: return slot*PER_SLOT_BITS + i*32 + n
 106                             LOG2(0);  LOG2(1);  LOG2(2);  LOG2(3);
 107                             LOG2(4);  LOG2(5);  LOG2(6);  LOG2(7);
 108                             LOG2(8);  LOG2(9);  LOG2(10); LOG2(11);
 109                             LOG2(12); LOG2(13); LOG2(14); LOG2(15);
 110                             LOG2(16); LOG2(17); LOG2(18); LOG2(19);
 111                             LOG2(20); LOG2(21); LOG2(22); LOG2(23);
 112                             LOG2(24); LOG2(25); LOG2(26); LOG2(27);
 113                             LOG2(28); LOG2(29); LOG2(30); LOG2(31);
 114                         }
 115                         return -1; /* impossible... */
 116                 }
 117         }
 118
 119         return -1;
 120 }
 121
 122
 123 /*
 124  * get_tmpname() - create a tmp filename for a given filename
 125  *
 126  *   If a tmpdir is defined, use that as the directory to
 127  *   put it in.  Otherwise, the tmp filename is in the same
 128  *   directory as the given name.  Note that there may be no
 129  *   directory at all in the given name!
 130  *
 131  *   The tmp filename is basically the given filename with a
 132  *   dot prepended, and .XXXXXX appended (for mkstemp() to
 133  *   put its unique gunk in).  Take care to not exceed
 134  *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
 135  *   the basename basically becomes 8 chars longer. In that
 136  *   case, the original name is shortened sufficiently to
 137  *   make it all fit.
 138  *
 139  *   Of course, there's no real reason for the tmp name to
 140  *   look like the original, except to satisfy us humans.
 141  *   As long as it's unique, rsync will work.
 142  */
 143
 144 static int get_tmpname(char *fnametmp, char *fname)
 145 {
 146         char *f;
 147         int     length = 0;
 148         int     maxname;
 149
 150         if (tmpdir) {
 151                 /* Note: this can't overflow, so the return value is safe */
 152                 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
 153                 fnametmp[length++] = '/';
 154                 fnametmp[length] = '\0';        /* always NULL terminated */
 155         }
 156
 157         if ((f = strrchr(fname, '/')) != NULL) {
 158                 ++f;
 159                 if (!tmpdir) {
 160                         length = f - fname;
 161                         /* copy up to and including the slash */
 162                         strlcpy(fnametmp, fname, length + 1);
 163                 }
 164         } else
 165                 f = fname;
 166         fnametmp[length++] = '.';
 167         fnametmp[length] = '\0';                /* always NULL terminated */
 168
 169         maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
 170
 171         if (maxname < 1) {
 172                 rprintf(FERROR, "temporary filename too long: %s\n",
 173                         safe_fname(fname));
 174                 fnametmp[0] = '\0';
 175                 return 0;
 176         }
 177
 178         strlcpy(fnametmp + length, f, maxname);
 179         strcat(fnametmp + length, ".XXXXXX");
 180
 181         return 1;
 182 }
 183
 184
 185 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 186                         char *fname, int fd, OFF_T total_size)
 187 {
 188         static char file_sum1[MD4_SUM_LENGTH];
 189         static char file_sum2[MD4_SUM_LENGTH];
 190         struct map_struct *mapbuf;
 191         struct sum_struct sum;
 192         int32 len;
 193         OFF_T offset = 0;
 194         OFF_T offset2;
 195         char *data;
 196         int32 i;
 197         char *map = NULL;
 198
 199         read_sum_head(f_in, &sum);
 200
 201         if (fd_r >= 0 && size_r > 0) {
 202                 int32 read_size = MAX(sum.blength * 2, 16*1024);
 203                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
 204                 if (verbose > 2) {
 205                         rprintf(FINFO, "recv mapped %s of size %.0f\n",
 206                                 safe_fname(fname_r), (double)size_r);
 207                 }
 208         } else
 209                 mapbuf = NULL;
 210
 211         sum_init(checksum_seed);
 212
 213         while ((i = recv_token(f_in, &data)) != 0) {
 214                 if (do_progress)
 215                         show_progress(offset, total_size);
 216
 217                 if (i > 0) {
 218                         if (verbose > 3) {
 219                                 rprintf(FINFO,"data recv %d at %.0f\n",
 220                                         i,(double)offset);
 221                         }
 222
 223                         stats.literal_data += i;
 224                         cleanup_got_literal = 1;
 225
 226                         sum_update(data, i);
 227
 228                         if (fd != -1 && write_file(fd,data,i) != i)
 229                                 goto report_write_error;
 230                         offset += i;
 231                         continue;
 232                 }
 233
 234                 i = -(i+1);
 235                 offset2 = i * (OFF_T)sum.blength;
 236                 len = sum.blength;
 237                 if (i == (int)sum.count-1 && sum.remainder != 0)
 238                         len = sum.remainder;
 239
 240                 stats.matched_data += len;
 241
 242                 if (verbose > 3) {
 243                         rprintf(FINFO,
 244                                 "chunk[%d] of size %ld at %.0f offset=%.0f\n",
 245                                 i, (long)len, (double)offset2, (double)offset);
 246                 }
 247
 248                 if (mapbuf) {
 249                         map = map_ptr(mapbuf,offset2,len);
 250
 251                         see_token(map, len);
 252                         sum_update(map, len);
 253                 }
 254
 255                 if (inplace) {
 256                         if (offset == offset2 && fd != -1) {
 257                                 if (flush_write_file(fd) < 0)
 258                                         goto report_write_error;
 259                                 offset += len;
 260                                 if (do_lseek(fd, len, SEEK_CUR) != offset) {
 261                                         rsyserr(FERROR, errno,
 262                                                 "lseek failed on %s",
 263                                                 full_fname(fname));
 264                                         exit_cleanup(RERR_FILEIO);
 265                                 }
 266                                 continue;
 267                         }
 268                 }
 269                 if (fd != -1 && write_file(fd, map, len) != (int)len)
 270                         goto report_write_error;
 271                 offset += len;
 272         }
 273
 274         if (flush_write_file(fd) < 0)
 275                 goto report_write_error;
 276
 277 #ifdef HAVE_FTRUNCATE
 278         if (inplace && fd != -1)
 279                 ftruncate(fd, offset);
 280 #endif
 281
 282         if (do_progress)
 283                 end_progress(total_size);
 284
 285         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 286             report_write_error:
 287                 rsyserr(FERROR, errno, "write failed on %s",
 288                         full_fname(fname));
 289                 exit_cleanup(RERR_FILEIO);
 290         }
 291
 292         sum_end(file_sum1);
 293
 294         if (mapbuf)
 295                 unmap_file(mapbuf);
 296
 297         read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
 298         if (verbose > 2)
 299                 rprintf(FINFO,"got file_sum\n");
 300         if (fd != -1 && memcmp(file_sum1, file_sum2, MD4_SUM_LENGTH) != 0)
 301                 return 0;
 302         return 1;
 303 }
 304
 305
 306 static void read_gen_name(int fd, char *dirname, char *buf)
 307 {
 308         int dlen;
 309         int len = read_byte(fd);
 310
 311         if (len & 0x80) {
 312 #if MAXPATHLEN > 32767
 313                 uchar lenbuf[2];
 314                 read_buf(fd, (char *)lenbuf, 2);
 315                 len = (len & ~0x80) * 0x10000 + lenbuf[0] * 0x100 + lenbuf[1];
 316 #else
 317                 len = (len & ~0x80) * 0x100 + read_byte(fd);
 318 #endif
 319         }
 320
 321         if (dirname) {
 322                 dlen = strlcpy(buf, dirname, MAXPATHLEN);
 323                 buf[dlen++] = '/';
 324         } else
 325                 dlen = 0;
 326
 327         if (dlen + len >= MAXPATHLEN) {
 328                 rprintf(FERROR, "bogus data on generator name pipe\n");
 329                 exit_cleanup(RERR_PROTOCOL);
 330         }
 331
 332         read_sbuf(fd, buf + dlen, len);
 333 }
 334
 335
 336 static void discard_receive_data(int f_in, OFF_T length)
 337 {
 338         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 339 }
 340
 341
 342 /**
 343  * main routine for receiver process.
 344  *
 345  * Receiver process runs on the same host as the generator process. */
 346 int recv_files(int f_in, struct file_list *flist, char *local_name,
 347                int f_in_name)
 348 {
 349         int next_gen_i = -1;
 350         int fd1,fd2;
 351         STRUCT_STAT st;
 352         int iflags;
 353         char *fname, fbuf[MAXPATHLEN];
 354         char template[MAXPATHLEN];
 355         char fnametmp[MAXPATHLEN];
 356         char *fnamecmp, *partialptr, numbuf[4];
 357         char fnamecmpbuf[MAXPATHLEN];
 358         struct file_struct *file;
 359         struct stats initial_stats;
 360         int save_make_backups = make_backups;
 361         int itemizing = am_daemon ? daemon_log_format_has_i
 362                       : !am_server && log_format_has_i;
 363         int i, recv_ok, phase = 0;
 364
 365         if (verbose > 2)
 366                 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
 367
 368         if (flist->hlink_pool) {
 369                 pool_destroy(flist->hlink_pool);
 370                 flist->hlink_pool = NULL;
 371         }
 372
 373         if (delay_updates)
 374                 init_delayed_bits(flist->count);
 375
 376         while (1) {
 377                 cleanup_disable();
 378
 379                 i = read_int(f_in);
 380                 if (i == -1) {
 381                         if (read_batch) {
 382                                 if (next_gen_i != flist->count) {
 383                                         do {
 384                                                 if (f_in_name >= 0
 385                                                     && next_gen_i >= 0)
 386                                                         read_byte(f_in_name);
 387                                         } while (read_int(batch_gen_fd) != -1);
 388                                 }
 389                                 next_gen_i = -1;
 390                         }
 391
 392                         if (phase)
 393                                 break;
 394
 395                         phase = 1;
 396                         csum_length = SUM_LENGTH;
 397                         if (verbose > 2)
 398                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 399                         send_msg(MSG_DONE, "", 0);
 400                         if (keep_partial && !partial_dir)
 401                                 make_backups = 0; /* prevents double backup */
 402                         continue;
 403                 }
 404
 405                 if (i < 0 || i >= flist->count) {
 406                         /* Handle the new keep-alive (no-op) packet. */
 407                         if (i == flist->count && protocol_version >= 29
 408                             && read_shortint(f_in) == ITEM_IS_NEW)
 409                                 continue;
 410                         rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
 411                                 i, flist->count);
 412                         exit_cleanup(RERR_PROTOCOL);
 413                 }
 414
 415                 file = flist->files[i];
 416                 fname = local_name ? local_name : f_name_to(file, fbuf);
 417
 418                 if (verbose > 2)
 419                         rprintf(FINFO, "recv_files(%s)\n", safe_fname(fname));
 420
 421                 if (protocol_version >= 29) {
 422                         iflags = read_shortint(f_in);
 423                         if (!(iflags & ITEM_UPDATING) || !S_ISREG(file->mode)) {
 424                                 int see_item = itemizing && (iflags || verbose > 1);
 425                                 if (am_server) {
 426                                         if (am_daemon && !dry_run && see_item)
 427                                                 log_recv(file, &stats, iflags);
 428                                 } else if (see_item || iflags & ITEM_UPDATING
 429                                     || (S_ISDIR(file->mode)
 430                                      && iflags & ITEM_REPORT_TIME))
 431                                         log_recv(file, &stats, iflags);
 432                                 continue;
 433                         }
 434                 } else
 435                         iflags = ITEM_UPDATING | ITEM_MISSING_DATA;
 436
 437                 if (!S_ISREG(file->mode)) {
 438                         rprintf(FERROR, "[%s] got index of non-regular file: %d\n",
 439                                 who_am_i(), i);
 440                         exit_cleanup(RERR_PROTOCOL);
 441                 }
 442
 443                 stats.current_file_index = i;
 444                 stats.num_transferred_files++;
 445                 stats.total_transferred_size += file->length;
 446                 cleanup_got_literal = 0;
 447
 448                 if (server_filter_list.head
 449                     && check_filter(&server_filter_list, fname, 0) < 0) {
 450                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 451                         exit_cleanup(RERR_PROTOCOL);
 452                 }
 453
 454                 if (dry_run) { /* log the transfer */
 455                         if (!am_server && log_format)
 456                                 log_recv(file, &stats, iflags);
 457                         continue;
 458                 }
 459
 460                 if (read_batch) {
 461                         while (i > next_gen_i) {
 462                                 if (f_in_name >= 0 && next_gen_i >= 0)
 463                                         read_byte(f_in_name);
 464                                 next_gen_i = read_int(batch_gen_fd);
 465                                 if (next_gen_i == -1)
 466                                         next_gen_i = flist->count;
 467                         }
 468                         if (i < next_gen_i) {
 469                                 rprintf(FINFO, "skipping update for \"%s\"\n",
 470                                         safe_fname(fname));
 471                                 discard_receive_data(f_in, file->length);
 472                                 continue;
 473                         }
 474                         next_gen_i = -1;
 475                 }
 476
 477                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 478
 479                 if (f_in_name >= 0) {
 480                         uchar j;
 481                         switch (j = read_byte(f_in_name)) {
 482                         case FNAMECMP_FNAME:
 483                                 fnamecmp = fname;
 484                                 break;
 485                         case FNAMECMP_PARTIAL_DIR:
 486                                 fnamecmp = partialptr ? partialptr : fname;
 487                                 break;
 488                         case FNAMECMP_BACKUP:
 489                                 fnamecmp = get_backup_name(fname);
 490                                 break;
 491                         case FNAMECMP_FUZZY:
 492                                 read_gen_name(f_in_name, file->dirname, fnamecmpbuf);
 493                                 fnamecmp = fnamecmpbuf;
 494                                 break;
 495                         default:
 496                                 if (j >= basis_dir_cnt) {
 497                                         rprintf(FERROR,
 498                                                 "invalid basis_dir index: %d.\n",
 499                                                 j);
 500                                         exit_cleanup(RERR_PROTOCOL);
 501                                 }
 502                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 503                                          basis_dir[j], fname);
 504                                 fnamecmp = fnamecmpbuf;
 505                                 break;
 506                         }
 507                 } else
 508                         fnamecmp = fname;
 509
 510                 initial_stats = stats;
 511
 512                 /* open the file */
 513                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 514
 515                 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
 516                         rsyserr(FERROR, errno, "fstat %s failed",
 517                                 full_fname(fnamecmp));
 518                         discard_receive_data(f_in, file->length);
 519                         close(fd1);
 520                         continue;
 521                 }
 522
 523                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 524                         /* this special handling for directories
 525                          * wouldn't be necessary if robust_rename()
 526                          * and the underlying robust_unlink could cope
 527                          * with directories
 528                          */
 529                         rprintf(FERROR,"recv_files: %s is a directory\n",
 530                                 full_fname(fnamecmp));
 531                         discard_receive_data(f_in, file->length);
 532                         close(fd1);
 533                         continue;
 534                 }
 535
 536                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 537                         close(fd1);
 538                         fd1 = -1;
 539                 }
 540
 541                 if (fd1 != -1 && !preserve_perms) {
 542                         /* if the file exists already and we aren't preserving
 543                          * permissions then act as though the remote end sent
 544                          * us the file permissions we already have */
 545                         file->mode = st.st_mode;
 546                 }
 547
 548                 /* We now check to see if we are writing file "inplace" */
 549                 if (inplace)  {
 550                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0);
 551                         if (fd2 == -1) {
 552                                 rsyserr(FERROR, errno, "open %s failed",
 553                                         full_fname(fname));
 554                                 discard_receive_data(f_in, file->length);
 555                                 if (fd1 != -1)
 556                                         close(fd1);
 557                                 continue;
 558                         }
 559                 } else {
 560                         if (!get_tmpname(fnametmp,fname)) {
 561                                 discard_receive_data(f_in, file->length);
 562                                 if (fd1 != -1)
 563                                         close(fd1);
 564                                 continue;
 565                         }
 566
 567                         strlcpy(template, fnametmp, sizeof template);
 568
 569                         /* we initially set the perms without the
 570                          * setuid/setgid bits to ensure that there is no race
 571                          * condition. They are then correctly updated after
 572                          * the lchown. Thanks to snabb@epipe.fi for pointing
 573                          * this out.  We also set it initially without group
 574                          * access because of a similar race condition. */
 575                         fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 576
 577                         /* in most cases parent directories will already exist
 578                          * because their information should have been previously
 579                          * transferred, but that may not be the case with -R */
 580                         if (fd2 == -1 && relative_paths && errno == ENOENT
 581                             && create_directory_path(fnametmp, orig_umask) == 0) {
 582                                 strlcpy(fnametmp, template, sizeof fnametmp);
 583                                 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 584                         }
 585                         if (fd2 == -1) {
 586                                 rsyserr(FERROR, errno, "mkstemp %s failed",
 587                                         full_fname(fnametmp));
 588                                 discard_receive_data(f_in, file->length);
 589                                 if (fd1 != -1)
 590                                         close(fd1);
 591                                 continue;
 592                         }
 593
 594                         if (partialptr)
 595                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 596                 }
 597
 598                 /* log the transfer */
 599                 if (log_before_transfer)
 600                         log_recv(file, &initial_stats, iflags);
 601                 else if (!am_server && verbose && do_progress)
 602                         rprintf(FINFO, "%s\n", safe_fname(fname));
 603
 604                 /* recv file data */
 605                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 606                                        fname, fd2, file->length);
 607
 608                 if (!log_before_transfer)
 609                         log_recv(file, &initial_stats, iflags);
 610
 611                 if (fd1 != -1)
 612                         close(fd1);
 613                 if (close(fd2) < 0) {
 614                         rsyserr(FERROR, errno, "close failed on %s",
 615                                 full_fname(fnametmp));
 616                         exit_cleanup(RERR_FILEIO);
 617                 }
 618
 619                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 620                         finish_transfer(fname, fnametmp, file, recv_ok, 1);
 621                         if (partialptr != fname && fnamecmp == partialptr) {
 622                                 do_unlink(partialptr);
 623                                 handle_partial_dir(partialptr, PDIR_DELETE);
 624                         }
 625                 } else if (keep_partial && partialptr
 626                     && handle_partial_dir(partialptr, PDIR_CREATE)) {
 627                         finish_transfer(partialptr, fnametmp, file, recv_ok,
 628                                         !partial_dir);
 629                         if (delay_updates && recv_ok) {
 630                                 set_delayed_bit(i);
 631                                 recv_ok = -1;
 632                         }
 633                 } else {
 634                         partialptr = NULL;
 635                         do_unlink(fnametmp);
 636                 }
 637
 638                 cleanup_disable();
 639
 640                 if (recv_ok) {
 641                         if (remove_sent_files && recv_ok > 0) {
 642                                 SIVAL(numbuf, 0, i);
 643                                 send_msg(MSG_SUCCESS, numbuf, 4);
 644                         }
 645                 } else {
 646                         int msgtype = csum_length == SUM_LENGTH || read_batch ?
 647                                 FERROR : FINFO;
 648                         if (msgtype == FERROR || verbose) {
 649                                 char *errstr, *redostr, *keptstr;
 650                                 if (!(keep_partial && partialptr) && !inplace)
 651                                         keptstr = "discarded";
 652                                 else if (partial_dir)
 653                                         keptstr = "put into partial-dir";
 654                                 else
 655                                         keptstr = "retained";
 656                                 if (msgtype == FERROR) {
 657                                         errstr = "ERROR";
 658                                         redostr = "";
 659                                 } else {
 660                                         errstr = "WARNING";
 661                                         redostr = " (will try again)";
 662                                 }
 663                                 rprintf(msgtype,
 664                                         "%s: %s failed verification -- update %s%s.\n",
 665                                         errstr, safe_fname(fname),
 666                                         keptstr, redostr);
 667                         }
 668                         if (csum_length != SUM_LENGTH) {
 669                                 SIVAL(numbuf, 0, i);
 670                                 send_msg(MSG_REDO, numbuf, 4);
 671                         }
 672                 }
 673         }
 674         make_backups = save_make_backups;
 675
 676         if (delay_updates) {
 677                 for (i = -1; (i = next_delayed_bit(i)) >= 0; ) {
 678                         struct file_struct *file = flist->files[i];
 679                         fname = local_name ? local_name : f_name(file);
 680                         partialptr = partial_dir_fname(fname);
 681                         if (partialptr) {
 682                                 if (make_backups && !make_backup(fname))
 683                                         continue;
 684                                 if (verbose > 2) {
 685                                         rprintf(FINFO, "renaming %s to %s\n",
 686                                                 safe_fname(partialptr),
 687                                                 safe_fname(fname));
 688                                 }
 689                                 if (do_rename(partialptr, fname) < 0) {
 690                                         rsyserr(FERROR, errno,
 691                                                 "rename failed for %s (from %s)",
 692                                                 full_fname(fname),
 693                                                 safe_fname(partialptr));
 694                                 } else {
 695                                         if (remove_sent_files) {
 696                                                 SIVAL(numbuf, 0, i);
 697                                                 send_msg(MSG_SUCCESS,numbuf,4);
 698                                         }
 699                                         handle_partial_dir(partialptr,
 700                                                            PDIR_DELETE);
 701                                 }
 702                         }
 703                 }
 704         }
 705
 706         if (verbose > 2)
 707                 rprintf(FINFO,"recv_files finished\n");
 708
 709         return 0;
 710 }