generator.c

   1 /* -*- c-file-style: "linux" -*-
   2
   3    rsync -- fast file replication program
   4
   5    Copyright (C) 1996-2000 by Andrew Tridgell
   6    Copyright (C) Paul Mackerras 1996
   7    Copyright (C) 2002 by Martin Pool <mbp@samba.org>
   8
   9    This program is free software; you can redistribute it and/or modify
  10    it under the terms of the GNU General Public License as published by
  11    the Free Software Foundation; either version 2 of the License, or
  12    (at your option) any later version.
  13
  14    This program is distributed in the hope that it will be useful,
  15    but WITHOUT ANY WARRANTY; without even the implied warranty of
  16    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17    GNU General Public License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with this program; if not, write to the Free Software
  21    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  22 */
  23
  24 #include "rsync.h"
  25
  26 extern int verbose;
  27 extern int dry_run;
  28 extern int relative_paths;
  29 extern int keep_dirlinks;
  30 extern int preserve_links;
  31 extern int am_root;
  32 extern int preserve_devices;
  33 extern int preserve_hard_links;
  34 extern int preserve_perms;
  35 extern int preserve_uid;
  36 extern int preserve_gid;
  37 extern int preserve_times;
  38 extern int omit_dir_times;
  39 extern int delete_during;
  40 extern int update_only;
  41 extern int opt_ignore_existing;
  42 extern int inplace;
  43 extern int make_backups;
  44 extern int csum_length;
  45 extern int ignore_times;
  46 extern int size_only;
  47 extern OFF_T max_size;
  48 extern int io_timeout;
  49 extern int protocol_version;
  50 extern int always_checksum;
  51 extern char *partial_dir;
  52 extern char *basis_dir[];
  53 extern int compare_dest;
  54 extern int link_dest;
  55 extern int whole_file;
  56 extern int local_server;
  57 extern int list_only;
  58 extern int read_batch;
  59 extern int only_existing;
  60 extern int orig_umask;
  61 extern int safe_symlinks;
  62 extern long block_size; /* "long" because popt can't set an int32. */
  63
  64 extern struct filter_list_struct server_filter_list;
  65
  66 static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
  67 {
  68         if (preserve_perms
  69          && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS))
  70                 return 0;
  71
  72         if (am_root && preserve_uid && st->st_uid != file->uid)
  73                 return 0;
  74
  75         if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid)
  76                 return 0;
  77
  78         return 1;
  79 }
  80
  81 /* Perform our quick-check heuristic for determining if a file is unchanged. */
  82 static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
  83 {
  84         if (st->st_size != file->length)
  85                 return 0;
  86
  87         /* if always checksum is set then we use the checksum instead
  88            of the file time to determine whether to sync */
  89         if (always_checksum && S_ISREG(st->st_mode)) {
  90                 char sum[MD4_SUM_LENGTH];
  91                 file_checksum(fn, sum, st->st_size);
  92                 return memcmp(sum, file->u.sum, protocol_version < 21 ? 2
  93                                                         : MD4_SUM_LENGTH) == 0;
  94         }
  95
  96         if (size_only)
  97                 return 1;
  98
  99         if (ignore_times)
 100                 return 0;
 101
 102         return cmp_modtime(st->st_mtime, file->modtime) == 0;
 103 }
 104
 105
 106 /*
 107  * set (initialize) the size entries in the per-file sum_struct
 108  * calculating dynamic block and checksum sizes.
 109  *
 110  * This is only called from generate_and_send_sums() but is a separate
 111  * function to encapsulate the logic.
 112  *
 113  * The block size is a rounded square root of file length.
 114  *
 115  * The checksum size is determined according to:
 116  *     blocksum_bits = BLOCKSUM_EXP + 2*log2(file_len) - log2(block_len)
 117  * provided by Donovan Baarda which gives a probability of rsync
 118  * algorithm corrupting data and falling back using the whole md4
 119  * checksums.
 120  *
 121  * This might be made one of several selectable heuristics.
 122  */
 123 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 124 {
 125         int32 blength;
 126         int s2length;
 127
 128         if (block_size)
 129                 blength = block_size;
 130         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 131                 blength = BLOCK_SIZE;
 132         else {
 133                 int32 c;
 134                 int64 l;
 135                 int cnt;
 136                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 137                 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
 138                         blength = MAX_BLOCK_SIZE;
 139                 else {
 140                     blength = 0;
 141                     do {
 142                             blength |= c;
 143                             if (len < (int64)blength * blength)
 144                                     blength &= ~c;
 145                             c >>= 1;
 146                     } while (c >= 8);   /* round to multiple of 8 */
 147                     blength = MAX(blength, BLOCK_SIZE);
 148                 }
 149         }
 150
 151         if (protocol_version < 27) {
 152                 s2length = csum_length;
 153         } else if (csum_length == SUM_LENGTH) {
 154                 s2length = SUM_LENGTH;
 155         } else {
 156                 int32 c;
 157                 int64 l;
 158                 int b = BLOCKSUM_BIAS;
 159                 for (l = len; l >>= 1; b += 2) {}
 160                 for (c = blength; c >>= 1 && b; b--) {}
 161                 /* add a bit, subtract rollsum, round up. */
 162                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 163                 s2length = MAX(s2length, csum_length);
 164                 s2length = MIN(s2length, SUM_LENGTH);
 165         }
 166
 167         sum->flength    = len;
 168         sum->blength    = blength;
 169         sum->s2length   = s2length;
 170         sum->count      = (len + (blength - 1)) / blength;
 171         sum->remainder  = (len % blength);
 172
 173         if (sum->count && verbose > 2) {
 174                 rprintf(FINFO,
 175                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 176                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 177                         sum->s2length, (double)sum->flength);
 178         }
 179 }
 180
 181
 182 /*
 183  * Generate and send a stream of signatures/checksums that describe a buffer
 184  *
 185  * Generate approximately one checksum every block_len bytes.
 186  */
 187 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 188 {
 189         size_t i;
 190         struct map_struct *mapbuf;
 191         struct sum_struct sum;
 192         OFF_T offset = 0;
 193
 194         sum_sizes_sqroot(&sum, len);
 195
 196         if (len > 0)
 197                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 198         else
 199                 mapbuf = NULL;
 200
 201         write_sum_head(f_out, &sum);
 202
 203         for (i = 0; i < sum.count; i++) {
 204                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 205                 char *map = map_ptr(mapbuf, offset, n1);
 206                 uint32 sum1 = get_checksum1(map, n1);
 207                 char sum2[SUM_LENGTH];
 208
 209                 if (f_copy >= 0)
 210                         full_write(f_copy, map, n1);
 211
 212                 get_checksum2(map, n1, sum2);
 213
 214                 if (verbose > 3) {
 215                         rprintf(FINFO,
 216                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 217                                 (double)i, (double)offset, (long)n1,
 218                                 (unsigned long)sum1);
 219                 }
 220                 write_int(f_out, sum1);
 221                 write_buf(f_out, sum2, sum.s2length);
 222                 len -= n1;
 223                 offset += n1;
 224         }
 225
 226         if (mapbuf)
 227                 unmap_file(mapbuf);
 228 }
 229
 230
 231 /* Acts on flist->file's ndx'th item, whose name is fname.  If a directory,
 232  * make sure it exists, and has the right permissions/timestamp info.  For
 233  * all other non-regular files (symlinks, etc.) we create them here.  For
 234  * regular files that have changed, we try to find a basis file and then
 235  * start sending checksums.
 236  *
 237  * Note that f_out is set to -1 when doing final directory-permission and
 238  * modification-time repair. */
 239 static void recv_generator(char *fname, struct file_list *flist,
 240                            struct file_struct *file, int ndx,
 241                            int f_out, int f_out_name)
 242 {
 243         int fd = -1, f_copy = -1;
 244         STRUCT_STAT st, partial_st;
 245         struct file_struct *back_file = NULL;
 246         int statret, stat_errno;
 247         char *fnamecmp, *partialptr, *backupptr = NULL;
 248         char fnamecmpbuf[MAXPATHLEN];
 249         uchar fnamecmp_type;
 250
 251         if (list_only)
 252                 return;
 253
 254         if (verbose > 2)
 255                 rprintf(FINFO, "recv_generator(%s,%d)\n", safe_fname(fname), ndx);
 256
 257         if (server_filter_list.head
 258             && check_filter(&server_filter_list, fname,
 259                             S_ISDIR(file->mode)) < 0) {
 260                 if (verbose) {
 261                         rprintf(FINFO, "skipping server-excluded file \"%s\"\n",
 262                                 safe_fname(fname));
 263                 }
 264                 return;
 265         }
 266
 267         if (dry_run > 1) {
 268                 statret = -1;
 269                 stat_errno = ENOENT;
 270         } else {
 271                 statret = link_stat(fname, &st,
 272                                     keep_dirlinks && S_ISDIR(file->mode));
 273                 stat_errno = errno;
 274         }
 275
 276         if (only_existing && statret == -1 && stat_errno == ENOENT) {
 277                 /* we only want to update existing files */
 278                 if (verbose > 1) {
 279                         rprintf(FINFO, "not creating new file \"%s\"\n",
 280                                 safe_fname(fname));
 281                 }
 282                 return;
 283         }
 284
 285         if (statret == 0 && !preserve_perms
 286             && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) {
 287                 /* if the file exists already and we aren't perserving
 288                  * permissions then act as though the remote end sent
 289                  * us the file permissions we already have */
 290                 file->mode = (file->mode & ~CHMOD_BITS)
 291                            | (st.st_mode & CHMOD_BITS);
 292         }
 293
 294         if (S_ISDIR(file->mode)) {
 295                 /* The file to be received is a directory, so we need
 296                  * to prepare appropriately.  If there is already a
 297                  * file of that name and it is *not* a directory, then
 298                  * we need to delete it.  If it doesn't exist, then
 299                  * (perhaps recursively) create it. */
 300                 if (statret == 0 && !S_ISDIR(st.st_mode)) {
 301                         delete_file(fname, DEL_TERSE);
 302                         statret = -1;
 303                 }
 304                 if (statret != 0 && do_mkdir(fname,file->mode) != 0 && errno != EEXIST) {
 305                         if (!relative_paths || errno != ENOENT
 306                             || create_directory_path(fname, orig_umask) < 0
 307                             || do_mkdir(fname, file->mode) < 0) {
 308                                 rsyserr(FERROR, errno,
 309                                         "recv_generator: mkdir %s failed",
 310                                         full_fname(fname));
 311                         }
 312                 }
 313                 if (set_perms(fname, file, statret ? NULL : &st, 0)
 314                     && verbose && f_out != -1)
 315                         rprintf(FINFO, "%s/\n", safe_fname(fname));
 316                 if (delete_during && f_out != -1 && csum_length != SUM_LENGTH
 317                     && (file->flags & FLAG_DEL_HERE))
 318                         delete_in_dir(flist, fname, file);
 319                 return;
 320         } else if (max_size && file->length > max_size) {
 321                 if (verbose > 1)
 322                         rprintf(FINFO, "%s is over max-size\n", fname);
 323                 return;
 324         }
 325
 326         if (preserve_links && S_ISLNK(file->mode)) {
 327 #if SUPPORT_LINKS
 328                 if (safe_symlinks && unsafe_symlink(file->u.link, fname)) {
 329                         if (verbose) {
 330                                 rprintf(FINFO, "ignoring unsafe symlink %s -> \"%s\"\n",
 331                                         full_fname(fname), file->u.link);
 332                         }
 333                         return;
 334                 }
 335                 if (statret == 0) {
 336                         int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0;
 337                         char lnk[MAXPATHLEN];
 338                         int len;
 339
 340                         if (!dflag
 341                             && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) {
 342                                 lnk[len] = 0;
 343                                 /* A link already pointing to the
 344                                  * right place -- no further action
 345                                  * required. */
 346                                 if (strcmp(lnk, file->u.link) == 0) {
 347                                         set_perms(fname, file, &st,
 348                                                   PERMS_REPORT);
 349                                         return;
 350                                 }
 351                         }
 352                         /* Not the right symlink (or not a symlink), so
 353                          * delete it. */
 354                         delete_file(fname, dflag | DEL_TERSE);
 355                 }
 356                 if (do_symlink(file->u.link,fname) != 0) {
 357                         rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
 358                                 full_fname(fname), safe_fname(file->u.link));
 359                 } else {
 360                         set_perms(fname,file,NULL,0);
 361                         if (verbose) {
 362                                 rprintf(FINFO, "%s -> %s\n", safe_fname(fname),
 363                                         safe_fname(file->u.link));
 364                         }
 365                 }
 366 #endif
 367                 return;
 368         }
 369
 370         if (am_root && preserve_devices && IS_DEVICE(file->mode)) {
 371                 if (statret != 0 ||
 372                     st.st_mode != file->mode ||
 373                     st.st_rdev != file->u.rdev) {
 374                         int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0;
 375                         delete_file(fname, dflag | DEL_TERSE);
 376                         if (verbose > 2) {
 377                                 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
 378                                         safe_fname(fname),
 379                                         (int)file->mode, (int)file->u.rdev);
 380                         }
 381                         if (do_mknod(fname,file->mode,file->u.rdev) != 0) {
 382                                 rsyserr(FERROR, errno, "mknod %s failed",
 383                                         full_fname(fname));
 384                         } else {
 385                                 set_perms(fname,file,NULL,0);
 386                                 if (verbose) {
 387                                         rprintf(FINFO, "%s\n",
 388                                                 safe_fname(fname));
 389                                 }
 390                         }
 391                 } else {
 392                         set_perms(fname, file, &st, PERMS_REPORT);
 393                 }
 394                 return;
 395         }
 396
 397         if (preserve_hard_links && hard_link_check(file, HL_CHECK_MASTER))
 398                 return;
 399
 400         if (!S_ISREG(file->mode)) {
 401                 rprintf(FINFO, "skipping non-regular file \"%s\"\n",
 402                         safe_fname(fname));
 403                 return;
 404         }
 405
 406         fnamecmp = fname;
 407         fnamecmp_type = FNAMECMP_FNAME;
 408
 409         if (statret == -1 && basis_dir[0] != NULL) {
 410                 int fallback_match = -1;
 411                 int match_level = 0;
 412                 int i = 0;
 413                 do {
 414                         pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 415                                  basis_dir[i], fname);
 416                         if (link_stat(fnamecmpbuf, &st, 0) == 0
 417                             && S_ISREG(st.st_mode)) {
 418                                 statret = 0;
 419                                 if (link_dest) {
 420                                         if (!match_level) {
 421                                                 fallback_match = i;
 422                                                 match_level = 1;
 423                                         } else if (match_level == 2
 424                                             && !unchanged_attrs(file, &st))
 425                                                 continue;
 426                                         if (!unchanged_file(fnamecmpbuf, file, &st))
 427                                                 continue;
 428                                         fallback_match = i;
 429                                         match_level = 2;
 430                                         if (!unchanged_attrs(file, &st))
 431                                                 continue;
 432                                 }
 433                                 match_level = 3;
 434                                 break;
 435                         }
 436                 } while (basis_dir[++i] != NULL);
 437                 if (statret == 0) {
 438                         if (match_level < 3) {
 439                                 i = fallback_match;
 440                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 441                                          basis_dir[i], fname);
 442                         }
 443 #if HAVE_LINK
 444                         if (link_dest && match_level == 3 && !dry_run) {
 445                                 if (do_link(fnamecmpbuf, fname) < 0) {
 446                                         if (verbose) {
 447                                                 rsyserr(FINFO, errno,
 448                                                         "link %s => %s",
 449                                                         fnamecmpbuf,
 450                                                         safe_fname(fname));
 451                                         }
 452                                         fnamecmp = fnamecmpbuf;
 453                                         fnamecmp_type = i;
 454                                 }
 455                         } else
 456 #endif
 457                         {
 458                                 fnamecmp = fnamecmpbuf;
 459                                 fnamecmp_type = i;
 460                         }
 461                 }
 462         }
 463
 464         if (statret == 0 && !S_ISREG(st.st_mode)) {
 465                 int dflag = S_ISDIR(st.st_mode) ? DEL_DIR : 0;
 466                 if (delete_file(fname, dflag | DEL_TERSE) != 0)
 467                         return;
 468                 statret = -1;
 469                 stat_errno = ENOENT;
 470         }
 471
 472         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
 473             && link_stat(partialptr, &partial_st, 0) == 0
 474             && S_ISREG(partial_st.st_mode)) {
 475                 if (statret == -1)
 476                         goto prepare_to_open;
 477         } else
 478                 partialptr = NULL;
 479
 480         if (statret == -1) {
 481                 if (preserve_hard_links && hard_link_check(file, HL_SKIP))
 482                         return;
 483                 if (stat_errno == ENOENT)
 484                         goto notify_others;
 485                 if (verbose > 1) {
 486                         rsyserr(FERROR, stat_errno,
 487                                 "recv_generator: failed to stat %s",
 488                                 full_fname(fname));
 489                 }
 490                 return;
 491         }
 492
 493         if (opt_ignore_existing && fnamecmp_type == FNAMECMP_FNAME) {
 494                 if (verbose > 1)
 495                         rprintf(FINFO, "%s exists\n", safe_fname(fname));
 496                 return;
 497         }
 498
 499         if (update_only && fnamecmp_type == FNAMECMP_FNAME
 500             && cmp_modtime(st.st_mtime, file->modtime) > 0) {
 501                 if (verbose > 1)
 502                         rprintf(FINFO, "%s is newer\n", safe_fname(fname));
 503                 return;
 504         }
 505
 506         if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
 507                 ;
 508         else if (unchanged_file(fnamecmp, file, &st)) {
 509                 if (fnamecmp_type == FNAMECMP_FNAME)
 510                         set_perms(fname, file, &st, PERMS_REPORT);
 511                 return;
 512         }
 513
 514 prepare_to_open:
 515         if (partialptr) {
 516                 st = partial_st;
 517                 fnamecmp = partialptr;
 518                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
 519                 statret = 0;
 520         }
 521
 522         if (dry_run || whole_file > 0) {
 523                 statret = -1;
 524                 goto notify_others;
 525         }
 526         if (read_batch)
 527                 goto notify_others;
 528
 529         /* open the file */
 530         fd = do_open(fnamecmp, O_RDONLY, 0);
 531
 532         if (fd == -1) {
 533                 rsyserr(FERROR, errno, "failed to open %s, continuing",
 534                         full_fname(fnamecmp));
 535             pretend_missing:
 536                 /* pretend the file didn't exist */
 537                 if (preserve_hard_links && hard_link_check(file, HL_SKIP))
 538                         return;
 539                 statret = -1;
 540                 goto notify_others;
 541         }
 542
 543         if (inplace && make_backups) {
 544                 if (!(backupptr = get_backup_name(fname))) {
 545                         close(fd);
 546                         return;
 547                 }
 548                 if (!(back_file = make_file(fname, NULL, NO_FILTERS))) {
 549                         close(fd);
 550                         goto pretend_missing;
 551                 }
 552                 if (robust_unlink(backupptr) && errno != ENOENT) {
 553                         rsyserr(FERROR, errno, "unlink %s",
 554                                 full_fname(backupptr));
 555                         free(back_file);
 556                         close(fd);
 557                         return;
 558                 }
 559                 if ((f_copy = do_open(backupptr,
 560                     O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
 561                         rsyserr(FERROR, errno, "open %s",
 562                                 full_fname(backupptr));
 563                         free(back_file);
 564                         close(fd);
 565                         return;
 566                 }
 567                 fnamecmp_type = FNAMECMP_BACKUP;
 568         }
 569
 570         if (verbose > 3) {
 571                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
 572                         safe_fname(fnamecmp), (double)st.st_size);
 573         }
 574
 575         if (verbose > 2)
 576                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
 577
 578 notify_others:
 579         write_int(f_out, ndx);
 580         if (protocol_version >= 29 && inplace && !read_batch)
 581                 write_byte(f_out, fnamecmp_type);
 582         if (f_out_name >= 0)
 583                 write_byte(f_out_name, fnamecmp_type);
 584
 585         if (dry_run || read_batch)
 586                 return;
 587
 588         if (statret == 0) {
 589                 generate_and_send_sums(fd, st.st_size, f_out, f_copy);
 590
 591                 if (f_copy >= 0) {
 592                         close(f_copy);
 593                         set_perms(backupptr, back_file, NULL, 0);
 594                         if (verbose > 1) {
 595                                 rprintf(FINFO, "backed up %s to %s\n",
 596                                         fname, backupptr);
 597                         }
 598                         free(back_file);
 599                 }
 600
 601                 close(fd);
 602         } else
 603                 write_sum_head(f_out, NULL);
 604 }
 605
 606
 607 void generate_files(int f_out, struct file_list *flist, char *local_name,
 608                     int f_out_name)
 609 {
 610         int i;
 611         int phase = 0;
 612         char fbuf[MAXPATHLEN];
 613         int need_retouch_dir_times = preserve_times && !omit_dir_times;
 614         int need_retouch_dir_perms = 0;
 615         int save_only_existing = only_existing;
 616         int save_opt_ignore_existing = opt_ignore_existing;
 617
 618         if (verbose > 2) {
 619                 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
 620                         (long)getpid(), flist->count);
 621         }
 622
 623         if (verbose >= 2) {
 624                 rprintf(FINFO,
 625                         whole_file > 0
 626                         ? "delta-transmission disabled for local transfer or --whole-file\n"
 627                         : "delta transmission enabled\n");
 628         }
 629
 630         /* We expect to just sit around now, so don't exit on a timeout.
 631          * If we really get a timeout then the other process should exit. */
 632         io_timeout = 0;
 633
 634         for (i = 0; i < flist->count; i++) {
 635                 struct file_struct *file = flist->files[i];
 636                 struct file_struct copy;
 637
 638                 if (!file->basename)
 639                         continue;
 640
 641                 /* We need to ensure that any dirs we create have writeable
 642                  * permissions during the time we are putting files within
 643                  * them.  This is then fixed after the transfer is done. */
 644                 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)) {
 645                         copy = *file;
 646                         copy.mode |= S_IWUSR; /* user write */
 647                         file = &copy;
 648                         need_retouch_dir_perms = 1;
 649                 }
 650
 651                 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
 652                                flist, file, i, f_out, f_out_name);
 653         }
 654         if (delete_during)
 655                 delete_in_dir(NULL, NULL, NULL);
 656
 657         phase++;
 658         csum_length = SUM_LENGTH;
 659         only_existing = max_size = opt_ignore_existing = 0;
 660         update_only = always_checksum = size_only = 0;
 661         ignore_times = 1;
 662
 663         if (verbose > 2)
 664                 rprintf(FINFO,"generate_files phase=%d\n",phase);
 665
 666         write_int(f_out, -1);
 667
 668         /* files can cycle through the system more than once
 669          * to catch initial checksum errors */
 670         while ((i = get_redo_num()) != -1) {
 671                 struct file_struct *file = flist->files[i];
 672                 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
 673                                flist, file, i, f_out, f_out_name);
 674         }
 675
 676         phase++;
 677         only_existing = save_only_existing;
 678         opt_ignore_existing = save_opt_ignore_existing;
 679
 680         if (verbose > 2)
 681                 rprintf(FINFO,"generate_files phase=%d\n",phase);
 682
 683         write_int(f_out, -1);
 684
 685         /* Read post-redo-phase MSG_DONE and any prior messages. */
 686         get_redo_num();
 687
 688         if (preserve_hard_links)
 689                 do_hard_links();
 690
 691         if ((need_retouch_dir_perms || need_retouch_dir_times)
 692             && !list_only && !local_name && !dry_run) {
 693                 /* Now we need to fix any directory permissions that were
 694                  * modified during the transfer and/or re-set any tweaked
 695                  * modified-time values. */
 696                 for (i = 0; i < flist->count; i++) {
 697                         struct file_struct *file = flist->files[i];
 698                         if (!file->basename || !S_ISDIR(file->mode))
 699                                 continue;
 700                         if (!need_retouch_dir_times && file->mode & S_IWUSR)
 701                                 continue;
 702                         recv_generator(local_name ? local_name : f_name(file),
 703                                        flist, file, i, -1, -1);
 704                 }
 705         }
 706
 707         if (verbose > 2)
 708                 rprintf(FINFO,"generate_files finished\n");
 709 }