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
 310         if (dirname) {
 311                 dlen = strlcpy(buf, dirname, MAXPATHLEN);
 312                 buf[dlen++] = '/';
 313         } else
 314                 dlen = 0;
 315
 316         read_vstring(fd, buf + dlen, MAXPATHLEN - dlen);
 317 }
 318
 319
 320 static void discard_receive_data(int f_in, OFF_T length)
 321 {
 322         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 323 }
 324
 325
 326 /**
 327  * main routine for receiver process.
 328  *
 329  * Receiver process runs on the same host as the generator process. */
 330 int recv_files(int f_in, struct file_list *flist, char *local_name,
 331                int f_in_name)
 332 {
 333         int next_gen_i = -1;
 334         int fd1,fd2;
 335         STRUCT_STAT st;
 336         int iflags;
 337         char *fname, fbuf[MAXPATHLEN];
 338         char template[MAXPATHLEN];
 339         char fnametmp[MAXPATHLEN];
 340         char *fnamecmp, *partialptr, numbuf[4];
 341         char fnamecmpbuf[MAXPATHLEN];
 342         struct file_struct *file;
 343         struct stats initial_stats;
 344         int save_make_backups = make_backups;
 345         int itemizing = am_daemon ? daemon_log_format_has_i
 346                       : !am_server && log_format_has_i;
 347         int i, recv_ok, phase = 0;
 348
 349         if (verbose > 2)
 350                 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
 351
 352         if (flist->hlink_pool) {
 353                 pool_destroy(flist->hlink_pool);
 354                 flist->hlink_pool = NULL;
 355         }
 356
 357         if (delay_updates)
 358                 init_delayed_bits(flist->count);
 359
 360         while (1) {
 361                 cleanup_disable();
 362
 363                 i = read_int(f_in);
 364                 if (i == -1) {
 365                         if (read_batch) {
 366                                 if (next_gen_i != flist->count) {
 367                                         do {
 368                                                 if (f_in_name >= 0
 369                                                     && next_gen_i >= 0)
 370                                                         read_byte(f_in_name);
 371                                         } while (read_int(batch_gen_fd) != -1);
 372                                 }
 373                                 next_gen_i = -1;
 374                         }
 375
 376                         if (phase)
 377                                 break;
 378
 379                         phase = 1;
 380                         csum_length = SUM_LENGTH;
 381                         if (verbose > 2)
 382                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 383                         send_msg(MSG_DONE, "", 0);
 384                         if (keep_partial && !partial_dir)
 385                                 make_backups = 0; /* prevents double backup */
 386                         continue;
 387                 }
 388
 389                 if (i < 0 || i >= flist->count) {
 390                         /* Handle the new keep-alive (no-op) packet. */
 391                         if (i == flist->count && protocol_version >= 29
 392                             && read_shortint(f_in) == ITEM_IS_NEW)
 393                                 continue;
 394                         rprintf(FERROR,"Invalid file index %d in recv_files (count=%d)\n",
 395                                 i, flist->count);
 396                         exit_cleanup(RERR_PROTOCOL);
 397                 }
 398
 399                 file = flist->files[i];
 400                 fname = local_name ? local_name : f_name_to(file, fbuf);
 401
 402                 if (verbose > 2)
 403                         rprintf(FINFO, "recv_files(%s)\n", safe_fname(fname));
 404
 405                 if (protocol_version >= 29) {
 406                         iflags = read_shortint(f_in);
 407                         if (!(iflags & ITEM_UPDATING) || !S_ISREG(file->mode)) {
 408                                 int see_item = itemizing && (iflags || verbose > 1);
 409                                 if (am_server) {
 410                                         if (am_daemon && !dry_run && see_item)
 411                                                 log_recv(file, &stats, iflags);
 412                                 } else if (see_item || iflags & ITEM_UPDATING
 413                                     || (S_ISDIR(file->mode)
 414                                      && iflags & ITEM_REPORT_TIME))
 415                                         log_recv(file, &stats, iflags);
 416                                 continue;
 417                         }
 418                 } else
 419                         iflags = ITEM_UPDATING | ITEM_MISSING_DATA;
 420
 421                 if (!S_ISREG(file->mode)) {
 422                         rprintf(FERROR, "[%s] got index of non-regular file: %d\n",
 423                                 who_am_i(), i);
 424                         exit_cleanup(RERR_PROTOCOL);
 425                 }
 426
 427                 stats.current_file_index = i;
 428                 stats.num_transferred_files++;
 429                 stats.total_transferred_size += file->length;
 430                 cleanup_got_literal = 0;
 431
 432                 if (server_filter_list.head
 433                     && check_filter(&server_filter_list, fname, 0) < 0) {
 434                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 435                         exit_cleanup(RERR_PROTOCOL);
 436                 }
 437
 438                 if (dry_run) { /* log the transfer */
 439                         if (!am_server && log_format)
 440                                 log_recv(file, &stats, iflags);
 441                         continue;
 442                 }
 443
 444                 if (read_batch) {
 445                         while (i > next_gen_i) {
 446                                 if (f_in_name >= 0 && next_gen_i >= 0)
 447                                         read_byte(f_in_name);
 448                                 next_gen_i = read_int(batch_gen_fd);
 449                                 if (next_gen_i == -1)
 450                                         next_gen_i = flist->count;
 451                         }
 452                         if (i < next_gen_i) {
 453                                 rprintf(FINFO, "skipping update for \"%s\"\n",
 454                                         safe_fname(fname));
 455                                 discard_receive_data(f_in, file->length);
 456                                 continue;
 457                         }
 458                         next_gen_i = -1;
 459                 }
 460
 461                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 462
 463                 if (f_in_name >= 0) {
 464                         uchar j;
 465                         switch (j = read_byte(f_in_name)) {
 466                         case FNAMECMP_FNAME:
 467                                 fnamecmp = fname;
 468                                 break;
 469                         case FNAMECMP_PARTIAL_DIR:
 470                                 fnamecmp = partialptr ? partialptr : fname;
 471                                 break;
 472                         case FNAMECMP_BACKUP:
 473                                 fnamecmp = get_backup_name(fname);
 474                                 break;
 475                         case FNAMECMP_FUZZY:
 476                                 read_gen_name(f_in_name, file->dirname, fnamecmpbuf);
 477                                 fnamecmp = fnamecmpbuf;
 478                                 break;
 479                         default:
 480                                 if (j >= basis_dir_cnt) {
 481                                         rprintf(FERROR,
 482                                                 "invalid basis_dir index: %d.\n",
 483                                                 j);
 484                                         exit_cleanup(RERR_PROTOCOL);
 485                                 }
 486                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 487                                          basis_dir[j], fname);
 488                                 fnamecmp = fnamecmpbuf;
 489                                 break;
 490                         }
 491                 } else
 492                         fnamecmp = fname;
 493
 494                 initial_stats = stats;
 495
 496                 /* open the file */
 497                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 498
 499                 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
 500                         rsyserr(FERROR, errno, "fstat %s failed",
 501                                 full_fname(fnamecmp));
 502                         discard_receive_data(f_in, file->length);
 503                         close(fd1);
 504                         continue;
 505                 }
 506
 507                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 508                         /* this special handling for directories
 509                          * wouldn't be necessary if robust_rename()
 510                          * and the underlying robust_unlink could cope
 511                          * with directories
 512                          */
 513                         rprintf(FERROR,"recv_files: %s is a directory\n",
 514                                 full_fname(fnamecmp));
 515                         discard_receive_data(f_in, file->length);
 516                         close(fd1);
 517                         continue;
 518                 }
 519
 520                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 521                         close(fd1);
 522                         fd1 = -1;
 523                 }
 524
 525                 if (fd1 != -1 && !preserve_perms) {
 526                         /* if the file exists already and we aren't preserving
 527                          * permissions then act as though the remote end sent
 528                          * us the file permissions we already have */
 529                         file->mode = st.st_mode;
 530                 }
 531
 532                 /* We now check to see if we are writing file "inplace" */
 533                 if (inplace)  {
 534                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0);
 535                         if (fd2 == -1) {
 536                                 rsyserr(FERROR, errno, "open %s failed",
 537                                         full_fname(fname));
 538                                 discard_receive_data(f_in, file->length);
 539                                 if (fd1 != -1)
 540                                         close(fd1);
 541                                 continue;
 542                         }
 543                 } else {
 544                         if (!get_tmpname(fnametmp,fname)) {
 545                                 discard_receive_data(f_in, file->length);
 546                                 if (fd1 != -1)
 547                                         close(fd1);
 548                                 continue;
 549                         }
 550
 551                         strlcpy(template, fnametmp, sizeof template);
 552
 553                         /* we initially set the perms without the
 554                          * setuid/setgid bits to ensure that there is no race
 555                          * condition. They are then correctly updated after
 556                          * the lchown. Thanks to snabb@epipe.fi for pointing
 557                          * this out.  We also set it initially without group
 558                          * access because of a similar race condition. */
 559                         fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 560
 561                         /* in most cases parent directories will already exist
 562                          * because their information should have been previously
 563                          * transferred, but that may not be the case with -R */
 564                         if (fd2 == -1 && relative_paths && errno == ENOENT
 565                             && create_directory_path(fnametmp, orig_umask) == 0) {
 566                                 strlcpy(fnametmp, template, sizeof fnametmp);
 567                                 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 568                         }
 569                         if (fd2 == -1) {
 570                                 rsyserr(FERROR, errno, "mkstemp %s failed",
 571                                         full_fname(fnametmp));
 572                                 discard_receive_data(f_in, file->length);
 573                                 if (fd1 != -1)
 574                                         close(fd1);
 575                                 continue;
 576                         }
 577
 578                         if (partialptr)
 579                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 580                 }
 581
 582                 /* log the transfer */
 583                 if (log_before_transfer)
 584                         log_recv(file, &initial_stats, iflags);
 585                 else if (!am_server && verbose && do_progress)
 586                         rprintf(FINFO, "%s\n", safe_fname(fname));
 587
 588                 /* recv file data */
 589                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 590                                        fname, fd2, file->length);
 591
 592                 if (!log_before_transfer)
 593                         log_recv(file, &initial_stats, iflags);
 594
 595                 if (fd1 != -1)
 596                         close(fd1);
 597                 if (close(fd2) < 0) {
 598                         rsyserr(FERROR, errno, "close failed on %s",
 599                                 full_fname(fnametmp));
 600                         exit_cleanup(RERR_FILEIO);
 601                 }
 602
 603                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 604                         finish_transfer(fname, fnametmp, file, recv_ok, 1);
 605                         if (partialptr != fname && fnamecmp == partialptr) {
 606                                 do_unlink(partialptr);
 607                                 handle_partial_dir(partialptr, PDIR_DELETE);
 608                         }
 609                 } else if (keep_partial && partialptr
 610                     && handle_partial_dir(partialptr, PDIR_CREATE)) {
 611                         finish_transfer(partialptr, fnametmp, file, recv_ok,
 612                                         !partial_dir);
 613                         if (delay_updates && recv_ok) {
 614                                 set_delayed_bit(i);
 615                                 recv_ok = -1;
 616                         }
 617                 } else {
 618                         partialptr = NULL;
 619                         do_unlink(fnametmp);
 620                 }
 621
 622                 cleanup_disable();
 623
 624                 if (recv_ok) {
 625                         if (remove_sent_files && recv_ok > 0) {
 626                                 SIVAL(numbuf, 0, i);
 627                                 send_msg(MSG_SUCCESS, numbuf, 4);
 628                         }
 629                 } else {
 630                         int msgtype = csum_length == SUM_LENGTH || read_batch ?
 631                                 FERROR : FINFO;
 632                         if (msgtype == FERROR || verbose) {
 633                                 char *errstr, *redostr, *keptstr;
 634                                 if (!(keep_partial && partialptr) && !inplace)
 635                                         keptstr = "discarded";
 636                                 else if (partial_dir)
 637                                         keptstr = "put into partial-dir";
 638                                 else
 639                                         keptstr = "retained";
 640                                 if (msgtype == FERROR) {
 641                                         errstr = "ERROR";
 642                                         redostr = "";
 643                                 } else {
 644                                         errstr = "WARNING";
 645                                         redostr = " (will try again)";
 646                                 }
 647                                 rprintf(msgtype,
 648                                         "%s: %s failed verification -- update %s%s.\n",
 649                                         errstr, safe_fname(fname),
 650                                         keptstr, redostr);
 651                         }
 652                         if (csum_length != SUM_LENGTH) {
 653                                 SIVAL(numbuf, 0, i);
 654                                 send_msg(MSG_REDO, numbuf, 4);
 655                         }
 656                 }
 657         }
 658         make_backups = save_make_backups;
 659
 660         if (delay_updates) {
 661                 for (i = -1; (i = next_delayed_bit(i)) >= 0; ) {
 662                         struct file_struct *file = flist->files[i];
 663                         fname = local_name ? local_name : f_name(file);
 664                         partialptr = partial_dir_fname(fname);
 665                         if (partialptr) {
 666                                 if (make_backups && !make_backup(fname))
 667                                         continue;
 668                                 if (verbose > 2) {
 669                                         rprintf(FINFO, "renaming %s to %s\n",
 670                                                 safe_fname(partialptr),
 671                                                 safe_fname(fname));
 672                                 }
 673                                 if (do_rename(partialptr, fname) < 0) {
 674                                         rsyserr(FERROR, errno,
 675                                                 "rename failed for %s (from %s)",
 676                                                 full_fname(fname),
 677                                                 safe_fname(partialptr));
 678                                 } else {
 679                                         if (remove_sent_files) {
 680                                                 SIVAL(numbuf, 0, i);
 681                                                 send_msg(MSG_SUCCESS,numbuf,4);
 682                                         }
 683                                         handle_partial_dir(partialptr,
 684                                                            PDIR_DELETE);
 685                                 }
 686                         }
 687                 }
 688         }
 689
 690         if (verbose > 2)
 691                 rprintf(FINFO,"recv_files finished\n");
 692
 693         return 0;
 694 }