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 do_xfers;
  29 extern int log_format_has_i;
  30 extern int log_format_has_o_or_i;
  31 extern int daemon_log_format_has_i;
  32 extern int am_root;
  33 extern int am_server;
  34 extern int am_daemon;
  35 extern int do_progress;
  36 extern int recurse;
  37 extern int relative_paths;
  38 extern int keep_dirlinks;
  39 extern int preserve_links;
  40 extern int preserve_devices;
  41 extern int preserve_hard_links;
  42 extern int preserve_perms;
  43 extern int preserve_uid;
  44 extern int preserve_gid;
  45 extern int preserve_times;
  46 extern int omit_dir_times;
  47 extern int delete_before;
  48 extern int delete_during;
  49 extern int delete_after;
  50 extern int module_id;
  51 extern int ignore_errors;
  52 extern int remove_sent_files;
  53 extern int delay_updates;
  54 extern int update_only;
  55 extern int opt_ignore_existing;
  56 extern int inplace;
  57 extern int append_mode;
  58 extern int make_backups;
  59 extern int csum_length;
  60 extern int ignore_times;
  61 extern int size_only;
  62 extern OFF_T max_size;
  63 extern int io_error;
  64 extern int allowed_lull;
  65 extern int sock_f_out;
  66 extern int ignore_timeout;
  67 extern int protocol_version;
  68 extern int fuzzy_basis;
  69 extern int always_checksum;
  70 extern char *partial_dir;
  71 extern char *basis_dir[];
  72 extern int compare_dest;
  73 extern int copy_dest;
  74 extern int link_dest;
  75 extern int whole_file;
  76 extern int list_only;
  77 extern int read_batch;
  78 extern int only_existing;
  79 extern int orig_umask;
  80 extern int safe_symlinks;
  81 extern long block_size; /* "long" because popt can't set an int32. */
  82 extern int max_delete;
  83 extern int force_delete;
  84 extern int one_file_system;
  85 extern struct stats stats;
  86 extern dev_t filesystem_dev;
  87 extern char *backup_dir;
  88 extern char *backup_suffix;
  89 extern int backup_suffix_len;
  90 extern struct file_list *the_file_list;
  91 extern struct filter_list_struct server_filter_list;
  92
  93 static int deletion_count = 0; /* used to implement --max-delete */
  94
  95
  96 static int is_backup_file(char *fn)
  97 {
  98         int k = strlen(fn) - backup_suffix_len;
  99         return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 100 }
 101
 102
 103 /* Delete a file or directory.  If DEL_FORCE_RECURSE is set in the flags, or if
 104  * force_delete is set, this will delete recursively as long as DEL_NO_RECURSE
 105  * is not set in the flags. */
 106 static int delete_item(char *fname, int mode, int flags)
 107 {
 108         struct file_list *dirlist;
 109         char buf[MAXPATHLEN];
 110         int j, dlen, zap_dir, ok;
 111         void *save_filters;
 112
 113         if (!S_ISDIR(mode)) {
 114                 if (max_delete && ++deletion_count > max_delete)
 115                         return 0;
 116                 if (make_backups && (backup_dir || !is_backup_file(fname)))
 117                         ok = make_backup(fname);
 118                 else
 119                         ok = robust_unlink(fname) == 0;
 120                 if (ok) {
 121                         if (!(flags & DEL_TERSE))
 122                                 log_delete(fname, mode);
 123                         return 0;
 124                 }
 125                 if (errno == ENOENT) {
 126                         deletion_count--;
 127                         return 0;
 128                 }
 129                 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
 130                         full_fname(fname));
 131                 return -1;
 132         }
 133
 134         zap_dir = (flags & DEL_FORCE_RECURSE || (force_delete && recurse))
 135                 && !(flags & DEL_NO_RECURSE);
 136         if ((max_delete && ++deletion_count > max_delete)
 137             || (dry_run && zap_dir)) {
 138                 ok = 0;
 139                 errno = ENOTEMPTY;
 140         } else if (make_backups && !backup_dir && !is_backup_file(fname)
 141             && !(flags & DEL_FORCE_RECURSE))
 142                 ok = make_backup(fname);
 143         else
 144                 ok = do_rmdir(fname) == 0;
 145         if (ok) {
 146                 if (!(flags & DEL_TERSE))
 147                         log_delete(fname, mode);
 148                 return 0;
 149         }
 150         if (errno == ENOENT) {
 151                 deletion_count--;
 152                 return 0;
 153         }
 154         if (!zap_dir) {
 155                 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
 156                         full_fname(fname));
 157                 return -1;
 158         }
 159         flags |= DEL_FORCE_RECURSE; /* mark subdir dels as not "in the way" */
 160         deletion_count--;
 161
 162         dlen = strlcpy(buf, fname, MAXPATHLEN);
 163         save_filters = push_local_filters(buf, dlen);
 164
 165         dirlist = get_dirlist(buf, dlen, 0);
 166         for (j = dirlist->count; j--; ) {
 167                 struct file_struct *fp = dirlist->files[j];
 168
 169                 if (fp->flags & FLAG_MOUNT_POINT)
 170                         continue;
 171
 172                 f_name_to(fp, buf);
 173                 delete_item(buf, fp->mode, flags & ~DEL_TERSE);
 174         }
 175         flist_free(dirlist);
 176
 177         pop_local_filters(save_filters);
 178
 179         if (max_delete && ++deletion_count > max_delete)
 180                 return 0;
 181
 182         if (do_rmdir(fname) == 0) {
 183                 if (!(flags & DEL_TERSE))
 184                         log_delete(fname, mode);
 185         } else if (errno != ENOTEMPTY && errno != EEXIST && errno != ENOENT) {
 186                 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
 187                         full_fname(fname));
 188                 return -1;
 189         }
 190
 191         return 0;
 192 }
 193
 194
 195 /* This function is used to implement per-directory deletion, and is used by
 196  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 197  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 198  * call will append names onto the end, but the old dir value will be restored
 199  * on exit). */
 200 static void delete_in_dir(struct file_list *flist, char *fbuf,
 201                           struct file_struct *file)
 202 {
 203         static int min_depth = MAXPATHLEN, cur_depth = -1;
 204         static void *filt_array[MAXPATHLEN/2+1];
 205         static int already_warned = 0;
 206         struct file_list *dirlist;
 207         char delbuf[MAXPATHLEN];
 208         STRUCT_STAT st;
 209         int dlen, i;
 210
 211         if (!flist) {
 212                 while (cur_depth >= min_depth)
 213                         pop_local_filters(filt_array[cur_depth--]);
 214                 min_depth = MAXPATHLEN;
 215                 cur_depth = -1;
 216                 return;
 217         }
 218
 219         if (verbose > 2)
 220                 rprintf(FINFO, "delete_in_dir(%s)\n", safe_fname(fbuf));
 221
 222         if (allowed_lull)
 223                 maybe_send_keepalive();
 224
 225         if (file->dir.depth >= MAXPATHLEN/2+1)
 226                 return; /* Impossible... */
 227
 228         if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
 229                 if (already_warned)
 230                         return;
 231                 rprintf(FINFO,
 232                         "IO error encountered -- skipping file deletion\n");
 233                 already_warned = 1;
 234                 return;
 235         }
 236
 237         while (cur_depth >= file->dir.depth && cur_depth >= min_depth)
 238                 pop_local_filters(filt_array[cur_depth--]);
 239         cur_depth = file->dir.depth;
 240         if (min_depth > cur_depth)
 241                 min_depth = cur_depth;
 242         dlen = strlen(fbuf);
 243         filt_array[cur_depth] = push_local_filters(fbuf, dlen);
 244
 245         if (link_stat(fbuf, &st, keep_dirlinks) < 0)
 246                 return;
 247
 248         if (one_file_system) {
 249                 if (file->flags & FLAG_TOP_DIR)
 250                         filesystem_dev = st.st_dev;
 251                 else if (filesystem_dev != st.st_dev)
 252                         return;
 253         }
 254
 255         dirlist = get_dirlist(fbuf, dlen, 0);
 256
 257         /* If an item in dirlist is not found in flist, delete it
 258          * from the filesystem. */
 259         for (i = dirlist->count; i--; ) {
 260                 struct file_struct *fp = dirlist->files[i];
 261                 if (!fp->basename || fp->flags & FLAG_MOUNT_POINT)
 262                         continue;
 263                 if (flist_find(flist, fp) < 0) {
 264                         int mode = fp->mode;
 265                         f_name_to(fp, delbuf);
 266                         delete_item(delbuf, mode, DEL_FORCE_RECURSE);
 267                 }
 268         }
 269
 270         flist_free(dirlist);
 271 }
 272
 273 /* This deletes any files on the receiving side that are not present on the
 274  * sending side.  This is used by --delete-before and --delete-after. */
 275 static void do_delete_pass(struct file_list *flist)
 276 {
 277         char fbuf[MAXPATHLEN];
 278         int j;
 279
 280         if (dry_run > 1 /* destination doesn't exist yet */
 281          || list_only)
 282                 return;
 283
 284         for (j = 0; j < flist->count; j++) {
 285                 struct file_struct *file = flist->files[j];
 286
 287                 if (!(file->flags & FLAG_DEL_HERE))
 288                         continue;
 289
 290                 f_name_to(file, fbuf);
 291                 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
 292                         rprintf(FINFO, "deleting in %s\n", safe_fname(fbuf));
 293
 294                 delete_in_dir(flist, fbuf, file);
 295         }
 296         if (do_progress && !am_server)
 297                 rprintf(FINFO, "                    \r");
 298 }
 299
 300 static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
 301 {
 302         if (preserve_perms
 303          && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS))
 304                 return 0;
 305
 306         if (am_root && preserve_uid && st->st_uid != file->uid)
 307                 return 0;
 308
 309         if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid)
 310                 return 0;
 311
 312         return 1;
 313 }
 314
 315
 316 void itemize(struct file_struct *file, int ndx, int statret, STRUCT_STAT *st,
 317              int32 iflags, uchar fnamecmp_type, char *xname)
 318 {
 319         if (statret == 0) {
 320                 if (S_ISREG(file->mode) && file->length != st->st_size)
 321                         iflags |= ITEM_REPORT_SIZE;
 322                 if (!(iflags & ITEM_NO_DEST_AND_NO_UPDATE)) {
 323                         int keep_time = !preserve_times ? 0
 324                             : S_ISDIR(file->mode) ? !omit_dir_times
 325                             : !S_ISLNK(file->mode);
 326
 327                         if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
 328                              && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 329                             || (keep_time && cmp_modtime(file->modtime, st->st_mtime) != 0))
 330                                 iflags |= ITEM_REPORT_TIME;
 331                         if (preserve_perms
 332                          && (file->mode & CHMOD_BITS) != (st->st_mode & CHMOD_BITS))
 333                                 iflags |= ITEM_REPORT_PERMS;
 334                         if (preserve_uid && am_root && file->uid != st->st_uid)
 335                                 iflags |= ITEM_REPORT_OWNER;
 336                         if (preserve_gid && file->gid != GID_NONE
 337                             && st->st_gid != file->gid)
 338                                 iflags |= ITEM_REPORT_GROUP;
 339                 }
 340         } else
 341                 iflags |= ITEM_IS_NEW;
 342
 343         iflags &= 0xffff;
 344         if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
 345           || (xname && *xname)) && !read_batch) {
 346                 if (protocol_version >= 29) {
 347                         if (ndx >= 0)
 348                                 write_int(sock_f_out, ndx);
 349                         write_shortint(sock_f_out, iflags);
 350                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 351                                 write_byte(sock_f_out, fnamecmp_type);
 352                         if (iflags & ITEM_XNAME_FOLLOWS)
 353                                 write_vstring(sock_f_out, xname, strlen(xname));
 354                 } else if (ndx >= 0)
 355                         log_item(file, &stats, iflags, xname);
 356         }
 357 }
 358
 359
 360 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 361 static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 362 {
 363         if (st->st_size != file->length)
 364                 return 0;
 365
 366         /* if always checksum is set then we use the checksum instead
 367            of the file time to determine whether to sync */
 368         if (always_checksum && S_ISREG(st->st_mode)) {
 369                 char sum[MD4_SUM_LENGTH];
 370                 file_checksum(fn, sum, st->st_size);
 371                 return memcmp(sum, file->u.sum, protocol_version < 21 ? 2
 372                                                         : MD4_SUM_LENGTH) == 0;
 373         }
 374
 375         if (size_only)
 376                 return 1;
 377
 378         if (ignore_times)
 379                 return 0;
 380
 381         return cmp_modtime(st->st_mtime, file->modtime) == 0;
 382 }
 383
 384
 385 /*
 386  * set (initialize) the size entries in the per-file sum_struct
 387  * calculating dynamic block and checksum sizes.
 388  *
 389  * This is only called from generate_and_send_sums() but is a separate
 390  * function to encapsulate the logic.
 391  *
 392  * The block size is a rounded square root of file length.
 393  *
 394  * The checksum size is determined according to:
 395  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 396  * provided by Donovan Baarda which gives a probability of rsync
 397  * algorithm corrupting data and falling back using the whole md4
 398  * checksums.
 399  *
 400  * This might be made one of several selectable heuristics.
 401  */
 402 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 403 {
 404         int32 blength;
 405         int s2length;
 406
 407         if (block_size)
 408                 blength = block_size;
 409         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 410                 blength = BLOCK_SIZE;
 411         else {
 412                 int32 c;
 413                 int64 l;
 414                 int cnt;
 415                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 416                 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
 417                         blength = MAX_BLOCK_SIZE;
 418                 else {
 419                     blength = 0;
 420                     do {
 421                             blength |= c;
 422                             if (len < (int64)blength * blength)
 423                                     blength &= ~c;
 424                             c >>= 1;
 425                     } while (c >= 8);   /* round to multiple of 8 */
 426                     blength = MAX(blength, BLOCK_SIZE);
 427                 }
 428         }
 429
 430         if (protocol_version < 27) {
 431                 s2length = csum_length;
 432         } else if (csum_length == SUM_LENGTH) {
 433                 s2length = SUM_LENGTH;
 434         } else {
 435                 int32 c;
 436                 int64 l;
 437                 int b = BLOCKSUM_BIAS;
 438                 for (l = len; l >>= 1; b += 2) {}
 439                 for (c = blength; c >>= 1 && b; b--) {}
 440                 /* add a bit, subtract rollsum, round up. */
 441                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 442                 s2length = MAX(s2length, csum_length);
 443                 s2length = MIN(s2length, SUM_LENGTH);
 444         }
 445
 446         sum->flength    = len;
 447         sum->blength    = blength;
 448         sum->s2length   = s2length;
 449         sum->count      = (len + (blength - 1)) / blength;
 450         sum->remainder  = (len % blength);
 451
 452         if (sum->count && verbose > 2) {
 453                 rprintf(FINFO,
 454                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 455                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 456                         sum->s2length, (double)sum->flength);
 457         }
 458 }
 459
 460
 461 /*
 462  * Generate and send a stream of signatures/checksums that describe a buffer
 463  *
 464  * Generate approximately one checksum every block_len bytes.
 465  */
 466 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 467 {
 468         int32 i;
 469         struct map_struct *mapbuf;
 470         struct sum_struct sum;
 471         OFF_T offset = 0;
 472
 473         sum_sizes_sqroot(&sum, len);
 474         write_sum_head(f_out, &sum);
 475
 476         if (append_mode > 0 && f_copy < 0)
 477                 return;
 478
 479         if (len > 0)
 480                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 481         else
 482                 mapbuf = NULL;
 483
 484         for (i = 0; i < sum.count; i++) {
 485                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 486                 char *map = map_ptr(mapbuf, offset, n1);
 487                 char sum2[SUM_LENGTH];
 488                 uint32 sum1;
 489
 490                 len -= n1;
 491                 offset += n1;
 492
 493                 if (f_copy >= 0) {
 494                         full_write(f_copy, map, n1);
 495                         if (append_mode > 0)
 496                                 continue;
 497                 }
 498
 499                 sum1 = get_checksum1(map, n1);
 500                 get_checksum2(map, n1, sum2);
 501
 502                 if (verbose > 3) {
 503                         rprintf(FINFO,
 504                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 505                                 (double)i, (double)offset - n1, (long)n1,
 506                                 (unsigned long)sum1);
 507                 }
 508                 write_int(f_out, sum1);
 509                 write_buf(f_out, sum2, sum.s2length);
 510         }
 511
 512         if (mapbuf)
 513                 unmap_file(mapbuf);
 514 }
 515
 516
 517 /* Try to find a filename in the same dir as "fname" with a similar name. */
 518 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 519 {
 520         int fname_len, fname_suf_len;
 521         const char *fname_suf, *fname = file->basename;
 522         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 523         int j, lowest_j = -1;
 524
 525         fname_len = strlen(fname);
 526         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 527
 528         for (j = 0; j < dirlist->count; j++) {
 529                 struct file_struct *fp = dirlist->files[j];
 530                 const char *suf, *name;
 531                 int len, suf_len;
 532                 uint32 dist;
 533
 534                 if (!S_ISREG(fp->mode) || !fp->length
 535                     || fp->flags & FLAG_NO_FUZZY)
 536                         continue;
 537
 538                 name = fp->basename;
 539
 540                 if (fp->length == file->length
 541                     && cmp_modtime(fp->modtime, file->modtime) == 0) {
 542                         if (verbose > 4) {
 543                                 rprintf(FINFO,
 544                                         "fuzzy size/modtime match for %s\n",
 545                                         name);
 546                         }
 547                         return j;
 548                 }
 549
 550                 len = strlen(name);
 551                 suf = find_filename_suffix(name, len, &suf_len);
 552
 553                 dist = fuzzy_distance(name, len, fname, fname_len);
 554                 /* Add some extra weight to how well the suffixes match. */
 555                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 556                       * 10;
 557                 if (verbose > 4) {
 558                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 559                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 560                 }
 561                 if (dist <= lowest_dist) {
 562                         lowest_dist = dist;
 563                         lowest_j = j;
 564                 }
 565         }
 566
 567         return lowest_j;
 568 }
 569
 570 void check_for_finished_hlinks(int itemizing, enum logcode code)
 571 {
 572         struct file_struct *file;
 573         int ndx;
 574
 575         while ((ndx = get_hlink_num()) != -1) {
 576                 if (ndx < 0 || ndx >= the_file_list->count)
 577                         continue;
 578
 579                 file = the_file_list->files[ndx];
 580                 if (!file->link_u.links)
 581                         continue;
 582
 583                 hard_link_cluster(file, ndx, itemizing, code);
 584         }
 585 }
 586
 587 static int phase = 0;
 588
 589 /* Acts on the_file_list->file's ndx'th item, whose name is fname.  If a dir,
 590  * make sure it exists, and has the right permissions/timestamp info.  For
 591  * all other non-regular files (symlinks, etc.) we create them here.  For
 592  * regular files that have changed, we try to find a basis file and then
 593  * start sending checksums.
 594  *
 595  * Note that f_out is set to -1 when doing final directory-permission and
 596  * modification-time repair. */
 597 static void recv_generator(char *fname, struct file_struct *file, int ndx,
 598                            int itemizing, int maybe_PERMS_REPORT,
 599                            enum logcode code, int f_out)
 600 {
 601         static int missing_below = -1, excluded_below = -1;
 602         static char *fuzzy_dirname = "";
 603         static struct file_list *fuzzy_dirlist = NULL;
 604         struct file_struct *fuzzy_file = NULL;
 605         int fd = -1, f_copy = -1;
 606         STRUCT_STAT st, real_st, partial_st;
 607         struct file_struct *back_file = NULL;
 608         int statret, real_ret, stat_errno;
 609         char *fnamecmp, *partialptr, *backupptr = NULL;
 610         char fnamecmpbuf[MAXPATHLEN];
 611         uchar fnamecmp_type;
 612
 613         if (list_only)
 614                 return;
 615
 616         if (!fname) {
 617                 if (fuzzy_dirlist) {
 618                         flist_free(fuzzy_dirlist);
 619                         fuzzy_dirlist = NULL;
 620                         fuzzy_dirname = "";
 621                 }
 622                 if (missing_below >= 0) {
 623                         dry_run--;
 624                         missing_below = -1;
 625                 }
 626                 return;
 627         }
 628
 629         if (verbose > 2) {
 630                 rprintf(FINFO, "recv_generator(%s,%d)\n",
 631                         safe_fname(fname), ndx);
 632         }
 633
 634         if (server_filter_list.head) {
 635                 if (excluded_below >= 0) {
 636                         if (file->dir.depth > excluded_below)
 637                                 goto skipping;
 638                         excluded_below = -1;
 639                 }
 640                 if (check_filter(&server_filter_list, fname,
 641                                  S_ISDIR(file->mode)) < 0) {
 642                         if (S_ISDIR(file->mode))
 643                                 excluded_below = file->dir.depth;
 644                     skipping:
 645                         if (verbose) {
 646                                 rprintf(FINFO,
 647                                         "skipping server-excluded file \"%s\"\n",
 648                                         safe_fname(fname));
 649                         }
 650                         return;
 651                 }
 652         }
 653
 654         if (missing_below >= 0 && file->dir.depth <= missing_below) {
 655                 dry_run--;
 656                 missing_below = -1;
 657         }
 658         if (dry_run > 1) {
 659                 statret = -1;
 660                 stat_errno = ENOENT;
 661         } else {
 662                 if (fuzzy_basis && S_ISREG(file->mode)) {
 663                         char *dn = file->dirname ? file->dirname : ".";
 664                         if (fuzzy_dirname != dn
 665                             && strcmp(fuzzy_dirname, dn) != 0) {
 666                                 if (fuzzy_dirlist)
 667                                         flist_free(fuzzy_dirlist);
 668                                 fuzzy_dirlist = get_dirlist(dn, -1, 1);
 669                         }
 670                         fuzzy_dirname = dn;
 671                 }
 672
 673                 statret = link_stat(fname, &st,
 674                                     keep_dirlinks && S_ISDIR(file->mode));
 675                 stat_errno = errno;
 676         }
 677
 678         if (only_existing && statret == -1 && stat_errno == ENOENT) {
 679                 /* we only want to update existing files */
 680                 if (verbose > 1) {
 681                         rprintf(FINFO, "not creating new %s \"%s\"\n",
 682                                 S_ISDIR(file->mode) ? "directory" : "file",
 683                                 safe_fname(fname));
 684                 }
 685                 return;
 686         }
 687
 688         if (statret == 0 && !preserve_perms
 689             && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) {
 690                 /* if the file exists already and we aren't perserving
 691                  * permissions then act as though the remote end sent
 692                  * us the file permissions we already have */
 693                 file->mode = (file->mode & ~CHMOD_BITS)
 694                            | (st.st_mode & CHMOD_BITS);
 695         }
 696
 697         if (S_ISDIR(file->mode)) {
 698                 /* The file to be received is a directory, so we need
 699                  * to prepare appropriately.  If there is already a
 700                  * file of that name and it is *not* a directory, then
 701                  * we need to delete it.  If it doesn't exist, then
 702                  * (perhaps recursively) create it. */
 703                 if (statret == 0 && !S_ISDIR(st.st_mode)) {
 704                         if (delete_item(fname, st.st_mode, DEL_TERSE) < 0)
 705                                 return;
 706                         statret = -1;
 707                 }
 708                 if (dry_run && statret != 0 && missing_below < 0) {
 709                         missing_below = file->dir.depth;
 710                         dry_run++;
 711                 }
 712                 if (itemizing && f_out != -1) {
 713                         itemize(file, ndx, statret, &st,
 714                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
 715                 }
 716                 if (statret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
 717                         if (!relative_paths || errno != ENOENT
 718                             || create_directory_path(fname, orig_umask) < 0
 719                             || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
 720                                 rsyserr(FERROR, errno,
 721                                         "recv_generator: mkdir %s failed",
 722                                         full_fname(fname));
 723                         }
 724                 }
 725                 if (set_perms(fname, file, statret ? NULL : &st, 0)
 726                     && verbose && code && f_out != -1)
 727                         rprintf(code, "%s/\n", safe_fname(fname));
 728                 if (delete_during && f_out != -1 && !phase && dry_run < 2
 729                     && (file->flags & FLAG_DEL_HERE))
 730                         delete_in_dir(the_file_list, fname, file);
 731                 return;
 732         }
 733
 734         if (preserve_hard_links && file->link_u.links
 735             && hard_link_check(file, ndx, fname, statret, &st,
 736                                itemizing, code, HL_CHECK_MASTER))
 737                 return;
 738
 739         if (preserve_links && S_ISLNK(file->mode)) {
 740 #ifdef SUPPORT_LINKS
 741                 if (safe_symlinks && unsafe_symlink(file->u.link, fname)) {
 742                         if (verbose) {
 743                                 if (the_file_list->count == 1)
 744                                         fname = f_name(file);
 745                                 rprintf(FINFO,
 746                                         "ignoring unsafe symlink %s -> \"%s\"\n",
 747                                         full_fname(fname),
 748                                         safe_fname(file->u.link));
 749                         }
 750                         return;
 751                 }
 752                 if (statret == 0) {
 753                         char lnk[MAXPATHLEN];
 754                         int len;
 755
 756                         if (!S_ISDIR(st.st_mode)
 757                             && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) {
 758                                 lnk[len] = 0;
 759                                 /* A link already pointing to the
 760                                  * right place -- no further action
 761                                  * required. */
 762                                 if (strcmp(lnk, file->u.link) == 0) {
 763                                         if (itemizing) {
 764                                                 itemize(file, ndx, 0, &st, 0,
 765                                                         0, NULL);
 766                                         }
 767                                         set_perms(fname, file, &st,
 768                                                   maybe_PERMS_REPORT);
 769                                         if (preserve_hard_links
 770                                             && file->link_u.links) {
 771                                                 hard_link_cluster(file, ndx,
 772                                                                   itemizing,
 773                                                                   code);
 774                                         }
 775                                         return;
 776                                 }
 777                         }
 778                         /* Not the right symlink (or not a symlink), so
 779                          * delete it. */
 780                         if (delete_item(fname, st.st_mode, DEL_TERSE) < 0)
 781                                 return;
 782                         if (!S_ISLNK(st.st_mode))
 783                                 statret = -1;
 784                 }
 785                 if (preserve_hard_links && file->link_u.links
 786                     && hard_link_check(file, ndx, fname, -1, &st,
 787                                        itemizing, code, HL_SKIP))
 788                         return;
 789                 if (do_symlink(file->u.link,fname) != 0) {
 790                         rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
 791                                 full_fname(fname), safe_fname(file->u.link));
 792                 } else {
 793                         set_perms(fname,file,NULL,0);
 794                         if (itemizing) {
 795                                 itemize(file, ndx, statret, &st,
 796                                         ITEM_LOCAL_CHANGE, 0, NULL);
 797                         }
 798                         if (code && verbose) {
 799                                 rprintf(code, "%s -> %s\n", safe_fname(fname),
 800                                         safe_fname(file->u.link));
 801                         }
 802                         if (remove_sent_files && !dry_run) {
 803                                 char numbuf[4];
 804                                 SIVAL(numbuf, 0, ndx);
 805                                 send_msg(MSG_SUCCESS, numbuf, 4);
 806                         }
 807                         if (preserve_hard_links && file->link_u.links)
 808                                 hard_link_cluster(file, ndx, itemizing, code);
 809                 }
 810 #endif
 811                 return;
 812         }
 813
 814         if (am_root && preserve_devices && IS_DEVICE(file->mode)) {
 815                 if (statret != 0 ||
 816                     st.st_mode != file->mode ||
 817                     st.st_rdev != file->u.rdev) {
 818                         if (delete_item(fname, st.st_mode, DEL_TERSE) < 0)
 819                                 return;
 820                         if (preserve_hard_links && file->link_u.links
 821                             && hard_link_check(file, ndx, fname, -1, &st,
 822                                                itemizing, code, HL_SKIP))
 823                                 return;
 824                         if (!IS_DEVICE(st.st_mode))
 825                                 statret = -1;
 826                         if (verbose > 2) {
 827                                 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
 828                                         safe_fname(fname),
 829                                         (int)file->mode, (int)file->u.rdev);
 830                         }
 831                         if (do_mknod(fname,file->mode,file->u.rdev) < 0) {
 832                                 rsyserr(FERROR, errno, "mknod %s failed",
 833                                         full_fname(fname));
 834                         } else {
 835                                 set_perms(fname,file,NULL,0);
 836                                 if (itemizing) {
 837                                         itemize(file, ndx, statret, &st,
 838                                                 ITEM_LOCAL_CHANGE, 0, NULL);
 839                                 }
 840                                 if (code && verbose) {
 841                                         rprintf(code, "%s\n",
 842                                                 safe_fname(fname));
 843                                 }
 844                                 if (preserve_hard_links && file->link_u.links) {
 845                                         hard_link_cluster(file, ndx,
 846                                                           itemizing, code);
 847                                 }
 848                         }
 849                 } else {
 850                         if (itemizing)
 851                                 itemize(file, ndx, statret, &st, 0, 0, NULL);
 852                         set_perms(fname, file, &st, maybe_PERMS_REPORT);
 853                         if (preserve_hard_links && file->link_u.links)
 854                                 hard_link_cluster(file, ndx, itemizing, code);
 855                 }
 856                 return;
 857         }
 858
 859         if (!S_ISREG(file->mode)) {
 860                 if (the_file_list->count == 1)
 861                         fname = f_name(file);
 862                 rprintf(FINFO, "skipping non-regular file \"%s\"\n",
 863                         safe_fname(fname));
 864                 return;
 865         }
 866
 867         if (max_size && file->length > max_size) {
 868                 if (verbose > 1) {
 869                         if (the_file_list->count == 1)
 870                                 fname = f_name(file);
 871                         rprintf(FINFO, "%s is over max-size\n",
 872                                 safe_fname(fname));
 873                 }
 874                 return;
 875         }
 876
 877         if (opt_ignore_existing && statret == 0) {
 878                 if (verbose > 1)
 879                         rprintf(FINFO, "%s exists\n", safe_fname(fname));
 880                 return;
 881         }
 882
 883         if (update_only && statret == 0
 884             && cmp_modtime(st.st_mtime, file->modtime) > 0) {
 885                 if (verbose > 1)
 886                         rprintf(FINFO, "%s is newer\n", safe_fname(fname));
 887                 return;
 888         }
 889
 890         fnamecmp = fname;
 891         fnamecmp_type = FNAMECMP_FNAME;
 892
 893         if (statret == 0 && !S_ISREG(st.st_mode)) {
 894                 if (delete_item(fname, st.st_mode, DEL_TERSE) != 0)
 895                         return;
 896                 statret = -1;
 897                 stat_errno = ENOENT;
 898         }
 899
 900         if (statret != 0 && basis_dir[0] != NULL) {
 901                 int best_match = -1;
 902                 int match_level = 0;
 903                 int i = 0;
 904                 do {
 905                         pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 906                                  basis_dir[i], fname);
 907                         if (link_stat(fnamecmpbuf, &st, 0) < 0
 908                             || !S_ISREG(st.st_mode))
 909                                 continue;
 910                         switch (match_level) {
 911                         case 0:
 912                                 best_match = i;
 913                                 match_level = 1;
 914                                 /* FALL THROUGH */
 915                         case 1:
 916                                 if (!unchanged_file(fnamecmpbuf, file, &st))
 917                                         continue;
 918                                 best_match = i;
 919                                 match_level = 2;
 920                                 if (copy_dest)
 921                                         break;
 922                                 /* FALL THROUGH */
 923                         case 2:
 924                                 if (!unchanged_attrs(file, &st))
 925                                         continue;
 926                                 best_match = i;
 927                                 match_level = 3;
 928                                 break;
 929                         }
 930                         break;
 931                 } while (basis_dir[++i] != NULL);
 932                 if (match_level) {
 933                         statret = 0;
 934                         if (i != best_match) {
 935                                 i = best_match;
 936                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 937                                          basis_dir[i], fname);
 938                                 if (link_stat(fnamecmpbuf, &st, 0) < 0) {
 939                                         match_level = 0;
 940                                         statret = -1;
 941                                         stat_errno = errno;
 942                                 }
 943                         }
 944 #ifdef HAVE_LINK
 945                         if (link_dest && match_level == 3) {
 946                                 if (hard_link_one(file, ndx, fname, -1, &st,
 947                                                   fnamecmpbuf, 1,
 948                                                   itemizing && verbose > 1,
 949                                                   code) == 0) {
 950                                         if (preserve_hard_links
 951                                             && file->link_u.links) {
 952                                                 hard_link_cluster(file, ndx,
 953                                                                   itemizing,
 954                                                                   code);
 955                                         }
 956                                         return;
 957                                 }
 958                                 match_level = 2;
 959                         }
 960 #endif
 961                         if (match_level == 2) {
 962                                 /* Copy the file locally. */
 963                                 if (copy_file(fnamecmpbuf, fname, file->mode) < 0) {
 964                                         if (verbose) {
 965                                                 rsyserr(FINFO, errno,
 966                                                         "copy_file %s => %s",
 967                                                         full_fname(fnamecmpbuf),
 968                                                         safe_fname(fname));
 969                                         }
 970                                         match_level = 0;
 971                                         statret = -1;
 972                                 } else {
 973                                         if (itemizing) {
 974                                                 itemize(file, ndx, 0, &st,
 975                                                         ITEM_LOCAL_CHANGE, 0,
 976                                                         NULL);
 977                                         } else if (verbose && code) {
 978                                                 rprintf(code, "%s\n",
 979                                                         safe_fname(fname));
 980                                         }
 981                                         set_perms(fname, file, NULL,
 982                                                   maybe_PERMS_REPORT);
 983                                         if (preserve_hard_links
 984                                             && file->link_u.links) {
 985                                                 hard_link_cluster(file, ndx,
 986                                                                   itemizing,
 987                                                                   code);
 988                                         }
 989                                         return;
 990                                 }
 991                         } else if (compare_dest || match_level == 1) {
 992                                 fnamecmp = fnamecmpbuf;
 993                                 fnamecmp_type = i;
 994                         }
 995                 }
 996         }
 997
 998         real_ret = statret;
 999         real_st = st;
1000
1001         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1002             && link_stat(partialptr, &partial_st, 0) == 0
1003             && S_ISREG(partial_st.st_mode)) {
1004                 if (statret != 0)
1005                         goto prepare_to_open;
1006         } else
1007                 partialptr = NULL;
1008
1009         if (statret != 0 && fuzzy_basis && dry_run <= 1) {
1010                 int j = find_fuzzy(file, fuzzy_dirlist);
1011                 if (j >= 0) {
1012                         fuzzy_file = fuzzy_dirlist->files[j];
1013                         f_name_to(fuzzy_file, fnamecmpbuf);
1014                         if (verbose > 2) {
1015                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1016                                         safe_fname(fname), safe_fname(fnamecmpbuf));
1017                         }
1018                         st.st_size = fuzzy_file->length;
1019                         statret = 0;
1020                         fnamecmp = fnamecmpbuf;
1021                         fnamecmp_type = FNAMECMP_FUZZY;
1022                 }
1023         }
1024
1025         if (statret != 0) {
1026                 if (preserve_hard_links && file->link_u.links
1027                     && hard_link_check(file, ndx, fname, statret, &st,
1028                                        itemizing, code, HL_SKIP))
1029                         return;
1030                 if (stat_errno == ENOENT)
1031                         goto notify_others;
1032                 if (verbose > 1) {
1033                         rsyserr(FERROR, stat_errno,
1034                                 "recv_generator: failed to stat %s",
1035                                 full_fname(fname));
1036                 }
1037                 return;
1038         }
1039
1040         if (append_mode && st.st_size > file->length)
1041                 return;
1042
1043         if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1044                 ;
1045         else if (fnamecmp_type == FNAMECMP_FUZZY)
1046                 ;
1047         else if (unchanged_file(fnamecmp, file, &st)) {
1048                 if (fnamecmp_type == FNAMECMP_FNAME) {
1049                         if (itemizing) {
1050                                 itemize(file, ndx, real_ret, &real_st,
1051                                         0, 0, NULL);
1052                         }
1053                         set_perms(fname, file, &st, maybe_PERMS_REPORT);
1054                         if (preserve_hard_links && file->link_u.links)
1055                                 hard_link_cluster(file, ndx, itemizing, code);
1056                         return;
1057                 }
1058                 /* Only --compare-dest gets here. */
1059                 itemize(file, ndx, real_ret, &real_st,
1060                         ITEM_NO_DEST_AND_NO_UPDATE, 0, NULL);
1061                 return;
1062         }
1063
1064 prepare_to_open:
1065         if (partialptr) {
1066                 st = partial_st;
1067                 fnamecmp = partialptr;
1068                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1069                 statret = 0;
1070         }
1071
1072         if (!do_xfers || read_batch || whole_file)
1073                 goto notify_others;
1074
1075         if (fuzzy_basis) {
1076                 int j = flist_find(fuzzy_dirlist, file);
1077                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1078                         fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY;
1079         }
1080
1081         /* open the file */
1082         fd = do_open(fnamecmp, O_RDONLY, 0);
1083
1084         if (fd == -1) {
1085                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1086                         full_fname(fnamecmp));
1087             pretend_missing:
1088                 /* pretend the file didn't exist */
1089                 if (preserve_hard_links && file->link_u.links
1090                     && hard_link_check(file, ndx, fname, statret, &st,
1091                                        itemizing, code, HL_SKIP))
1092                         return;
1093                 statret = real_ret = -1;
1094                 goto notify_others;
1095         }
1096
1097         if (inplace && make_backups && fnamecmp_type == FNAMECMP_FNAME) {
1098                 if (!(backupptr = get_backup_name(fname))) {
1099                         close(fd);
1100                         return;
1101                 }
1102                 if (!(back_file = make_file(fname, NULL, NO_FILTERS))) {
1103                         close(fd);
1104                         goto pretend_missing;
1105                 }
1106                 if (robust_unlink(backupptr) && errno != ENOENT) {
1107                         rsyserr(FERROR, errno, "unlink %s",
1108                                 full_fname(backupptr));
1109                         free(back_file);
1110                         close(fd);
1111                         return;
1112                 }
1113                 if ((f_copy = do_open(backupptr,
1114                     O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1115                         rsyserr(FERROR, errno, "open %s",
1116                                 full_fname(backupptr));
1117                         free(back_file);
1118                         close(fd);
1119                         return;
1120                 }
1121                 fnamecmp_type = FNAMECMP_BACKUP;
1122         }
1123
1124         if (verbose > 3) {
1125                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1126                         safe_fname(fnamecmp), (double)st.st_size);
1127         }
1128
1129         if (verbose > 2)
1130                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1131
1132 notify_others:
1133         write_int(f_out, ndx);
1134         if (itemizing) {
1135                 int iflags = ITEM_TRANSFER;
1136                 if (always_checksum)
1137                         iflags |= ITEM_REPORT_CHECKSUM;
1138                 if (fnamecmp_type != FNAMECMP_FNAME)
1139                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1140                 if (fnamecmp_type == FNAMECMP_FUZZY)
1141                         iflags |= ITEM_XNAME_FOLLOWS;
1142                 itemize(file, -1, real_ret, &real_st, iflags, fnamecmp_type,
1143                         fuzzy_file ? fuzzy_file->basename : NULL);
1144         }
1145
1146         if (!do_xfers) {
1147                 if (preserve_hard_links && file->link_u.links)
1148                         hard_link_cluster(file, ndx, itemizing, code);
1149                 return;
1150         }
1151         if (read_batch)
1152                 return;
1153
1154         if (statret != 0 || whole_file) {
1155                 write_sum_head(f_out, NULL);
1156                 return;
1157         }
1158
1159         generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1160
1161         if (f_copy >= 0) {
1162                 close(f_copy);
1163                 set_perms(backupptr, back_file, NULL, 0);
1164                 if (verbose > 1) {
1165                         rprintf(FINFO, "backed up %s to %s\n",
1166                                 safe_fname(fname), safe_fname(backupptr));
1167                 }
1168                 free(back_file);
1169         }
1170
1171         close(fd);
1172 }
1173
1174
1175 void generate_files(int f_out, struct file_list *flist, char *local_name)
1176 {
1177         int i;
1178         char fbuf[MAXPATHLEN];
1179         int itemizing, maybe_PERMS_REPORT;
1180         enum logcode code;
1181         int lull_mod = allowed_lull * 5;
1182         int need_retouch_dir_times = preserve_times && !omit_dir_times;
1183         int need_retouch_dir_perms = 0;
1184         int save_only_existing = only_existing;
1185         int save_opt_ignore_existing = opt_ignore_existing;
1186         int save_do_progress = do_progress;
1187         int save_make_backups = make_backups;
1188
1189         if (protocol_version >= 29) {
1190                 itemizing = 1;
1191                 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1192                 code = daemon_log_format_has_i ? 0 : FLOG;
1193         } else if (am_daemon) {
1194                 itemizing = daemon_log_format_has_i && do_xfers;
1195                 maybe_PERMS_REPORT = PERMS_REPORT;
1196                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1197         } else if (!am_server) {
1198                 itemizing = log_format_has_i;
1199                 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1200                 code = itemizing ? 0 : FINFO;
1201         } else {
1202                 itemizing = 0;
1203                 maybe_PERMS_REPORT = PERMS_REPORT;
1204                 code = FINFO;
1205         }
1206
1207         if (verbose > 2) {
1208                 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
1209                         (long)getpid(), flist->count);
1210         }
1211
1212         if (delete_before && !local_name && flist->count > 0)
1213                 do_delete_pass(flist);
1214         do_progress = 0;
1215
1216         if (append_mode || whole_file < 0)
1217                 whole_file = 0;
1218         if (verbose >= 2) {
1219                 rprintf(FINFO, "delta-transmission %s\n",
1220                         whole_file
1221                         ? "disabled for local transfer or --whole-file"
1222                         : "enabled");
1223         }
1224
1225         /* Since we often fill up the outgoing socket and then just sit around
1226          * waiting for the other 2 processes to do their thing, we don't want
1227          * to exit on a timeout.  If the data stops flowing, the receiver will
1228          * notice that and let us know via the redo pipe (or its closing). */
1229         ignore_timeout = 1;
1230
1231         for (i = 0; i < flist->count; i++) {
1232                 struct file_struct *file = flist->files[i];
1233
1234                 if (!file->basename)
1235                         continue;
1236
1237                 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
1238                                file, i, itemizing, maybe_PERMS_REPORT, code,
1239                                f_out);
1240
1241                 /* We need to ensure that any dirs we create have writeable
1242                  * permissions during the time we are putting files within
1243                  * them.  This is then fixed after the transfer is done. */
1244 #ifdef HAVE_CHMOD
1245                 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)
1246                     && !list_only) {
1247                         int mode = file->mode | S_IWUSR; /* user write */
1248                         char *fname = local_name ? local_name : fbuf;
1249                         if (do_chmod(fname, mode) < 0) {
1250                                 rsyserr(FERROR, errno,
1251                                         "failed to modify permissions on %s",
1252                                         full_fname(fname));
1253                         }
1254                         need_retouch_dir_perms = 1;
1255                 }
1256 #endif
1257
1258                 if (preserve_hard_links)
1259                         check_for_finished_hlinks(itemizing, code);
1260
1261                 if (allowed_lull && !(i % lull_mod))
1262                         maybe_send_keepalive();
1263                 else if (!(i % 200))
1264                         maybe_flush_socket();
1265         }
1266         recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1267         if (delete_during)
1268                 delete_in_dir(NULL, NULL, NULL);
1269
1270         phase++;
1271         csum_length = SUM_LENGTH;
1272         only_existing = max_size = opt_ignore_existing = 0;
1273         update_only = always_checksum = size_only = 0;
1274         ignore_times = 1;
1275         if (append_mode)  /* resend w/o append mode */
1276                 append_mode = -1; /* ... but only longer files */
1277         make_backups = 0; /* avoid a duplicate backup for inplace processing */
1278
1279         if (verbose > 2)
1280                 rprintf(FINFO,"generate_files phase=%d\n",phase);
1281
1282         write_int(f_out, -1);
1283
1284         /* files can cycle through the system more than once
1285          * to catch initial checksum errors */
1286         while ((i = get_redo_num(itemizing, code)) != -1) {
1287                 struct file_struct *file = flist->files[i];
1288                 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
1289                                file, i, itemizing, maybe_PERMS_REPORT, code,
1290                                f_out);
1291         }
1292
1293         phase++;
1294         only_existing = save_only_existing;
1295         opt_ignore_existing = save_opt_ignore_existing;
1296         make_backups = save_make_backups;
1297
1298         if (verbose > 2)
1299                 rprintf(FINFO,"generate_files phase=%d\n",phase);
1300
1301         write_int(f_out, -1);
1302         /* Reduce round-trip lag-time for a useless delay-updates phase. */
1303         if (protocol_version >= 29 && !delay_updates)
1304                 write_int(f_out, -1);
1305
1306         /* Read MSG_DONE for the redo phase (and any prior messages). */
1307         get_redo_num(itemizing, code);
1308
1309         if (protocol_version >= 29) {
1310                 phase++;
1311                 if (verbose > 2)
1312                         rprintf(FINFO, "generate_files phase=%d\n", phase);
1313                 if (delay_updates)
1314                         write_int(f_out, -1);
1315                 /* Read MSG_DONE for delay-updates phase & prior messages. */
1316                 get_redo_num(itemizing, code);
1317         }
1318
1319         do_progress = save_do_progress;
1320         if (delete_after && !local_name && flist->count > 0)
1321                 do_delete_pass(flist);
1322
1323         if ((need_retouch_dir_perms || need_retouch_dir_times)
1324             && !list_only && !local_name && !dry_run) {
1325                 int j = 0;
1326                 /* Now we need to fix any directory permissions that were
1327                  * modified during the transfer and/or re-set any tweaked
1328                  * modified-time values. */
1329                 for (i = 0; i < flist->count; i++) {
1330                         struct file_struct *file = flist->files[i];
1331                         if (!file->basename || !S_ISDIR(file->mode))
1332                                 continue;
1333                         if (!need_retouch_dir_times && file->mode & S_IWUSR)
1334                                 continue;
1335                         recv_generator(f_name(file), file, i, itemizing,
1336                                        maybe_PERMS_REPORT, code, -1);
1337                         if (allowed_lull && !(++j % lull_mod))
1338                                 maybe_send_keepalive();
1339                         else if (!(j % 200))
1340                                 maybe_flush_socket();
1341                 }
1342         }
1343         recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1344
1345         if (max_delete > 0 && deletion_count > max_delete) {
1346                 rprintf(FINFO,
1347                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
1348                         deletion_count - max_delete);
1349                 io_error |= IOERR_DEL_LIMIT;
1350         }
1351
1352         if (verbose > 2)
1353                 rprintf(FINFO,"generate_files finished\n");
1354 }