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 ignore_existing;
  56 extern int ignore_non_existing;
  57 extern int inplace;
  58 extern int append_mode;
  59 extern int make_backups;
  60 extern int csum_length;
  61 extern int ignore_times;
  62 extern int size_only;
  63 extern OFF_T max_size;
  64 extern OFF_T min_size;
  65 extern int io_error;
  66 extern int allowed_lull;
  67 extern int sock_f_out;
  68 extern int ignore_timeout;
  69 extern int protocol_version;
  70 extern int fuzzy_basis;
  71 extern int always_checksum;
  72 extern char *partial_dir;
  73 extern char *basis_dir[];
  74 extern int compare_dest;
  75 extern int copy_dest;
  76 extern int link_dest;
  77 extern int whole_file;
  78 extern int list_only;
  79 extern int read_batch;
  80 extern int orig_umask;
  81 extern int safe_symlinks;
  82 extern long block_size; /* "long" because popt can't set an int32. */
  83 extern int max_delete;
  84 extern int force_delete;
  85 extern int one_file_system;
  86 extern struct stats stats;
  87 extern dev_t filesystem_dev;
  88 extern char *backup_dir;
  89 extern char *backup_suffix;
  90 extern int backup_suffix_len;
  91 extern struct file_list *the_file_list;
  92 extern struct filter_list_struct server_filter_list;
  93
  94 static int deletion_count = 0; /* used to implement --max-delete */
  95
  96
  97 static int is_backup_file(char *fn)
  98 {
  99         int k = strlen(fn) - backup_suffix_len;
 100         return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 101 }
 102
 103
 104 /* Delete a file or directory.  If DEL_FORCE_RECURSE is set in the flags, or if
 105  * force_delete is set, this will delete recursively as long as DEL_NO_RECURSE
 106  * is not set in the flags. */
 107 static int delete_item(char *fname, int mode, int flags)
 108 {
 109         struct file_list *dirlist;
 110         char buf[MAXPATHLEN];
 111         int j, dlen, zap_dir, ok;
 112         void *save_filters;
 113
 114         if (!S_ISDIR(mode)) {
 115                 if (max_delete && ++deletion_count > max_delete)
 116                         return 0;
 117                 if (make_backups && (backup_dir || !is_backup_file(fname)))
 118                         ok = make_backup(fname);
 119                 else
 120                         ok = robust_unlink(fname) == 0;
 121                 if (ok) {
 122                         if (!(flags & DEL_TERSE))
 123                                 log_delete(fname, mode);
 124                         return 0;
 125                 }
 126                 if (errno == ENOENT) {
 127                         deletion_count--;
 128                         return 0;
 129                 }
 130                 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
 131                         full_fname(fname));
 132                 return -1;
 133         }
 134
 135         zap_dir = (flags & DEL_FORCE_RECURSE || (force_delete && recurse))
 136                 && !(flags & DEL_NO_RECURSE);
 137         if ((max_delete && ++deletion_count > max_delete)
 138             || (dry_run && zap_dir)) {
 139                 ok = 0;
 140                 errno = ENOTEMPTY;
 141         } else if (make_backups && !backup_dir && !is_backup_file(fname)
 142             && !(flags & DEL_FORCE_RECURSE))
 143                 ok = make_backup(fname);
 144         else
 145                 ok = do_rmdir(fname) == 0;
 146         if (ok) {
 147                 if (!(flags & DEL_TERSE))
 148                         log_delete(fname, mode);
 149                 return 0;
 150         }
 151         if (errno == ENOENT) {
 152                 deletion_count--;
 153                 return 0;
 154         }
 155         if (!zap_dir) {
 156                 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
 157                         full_fname(fname));
 158                 return -1;
 159         }
 160         flags |= DEL_FORCE_RECURSE; /* mark subdir dels as not "in the way" */
 161         deletion_count--;
 162
 163         dlen = strlcpy(buf, fname, MAXPATHLEN);
 164         save_filters = push_local_filters(buf, dlen);
 165
 166         dirlist = get_dirlist(buf, dlen, 0);
 167         for (j = dirlist->count; j--; ) {
 168                 struct file_struct *fp = dirlist->files[j];
 169
 170                 if (fp->flags & FLAG_MOUNT_POINT)
 171                         continue;
 172
 173                 f_name_to(fp, buf);
 174                 delete_item(buf, fp->mode, flags & ~DEL_TERSE);
 175         }
 176         flist_free(dirlist);
 177
 178         pop_local_filters(save_filters);
 179
 180         if (max_delete && ++deletion_count > max_delete)
 181                 return 0;
 182
 183         if (do_rmdir(fname) == 0) {
 184                 if (!(flags & DEL_TERSE))
 185                         log_delete(fname, mode);
 186         } else if (errno != ENOTEMPTY && errno != EEXIST && errno != ENOENT) {
 187                 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
 188                         full_fname(fname));
 189                 return -1;
 190         }
 191
 192         return 0;
 193 }
 194
 195
 196 /* This function is used to implement per-directory deletion, and is used by
 197  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 198  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 199  * call will append names onto the end, but the old dir value will be restored
 200  * on exit). */
 201 static void delete_in_dir(struct file_list *flist, char *fbuf,
 202                           struct file_struct *file)
 203 {
 204         static int min_depth = MAXPATHLEN, cur_depth = -1;
 205         static void *filt_array[MAXPATHLEN/2+1];
 206         static int already_warned = 0;
 207         struct file_list *dirlist;
 208         char delbuf[MAXPATHLEN];
 209         STRUCT_STAT st;
 210         int dlen, i;
 211
 212         if (!flist) {
 213                 while (cur_depth >= min_depth)
 214                         pop_local_filters(filt_array[cur_depth--]);
 215                 min_depth = MAXPATHLEN;
 216                 cur_depth = -1;
 217                 return;
 218         }
 219
 220         if (verbose > 2)
 221                 rprintf(FINFO, "delete_in_dir(%s)\n", safe_fname(fbuf));
 222
 223         if (allowed_lull)
 224                 maybe_send_keepalive();
 225
 226         if (file->dir.depth >= MAXPATHLEN/2+1)
 227                 return; /* Impossible... */
 228
 229         if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
 230                 if (already_warned)
 231                         return;
 232                 rprintf(FINFO,
 233                         "IO error encountered -- skipping file deletion\n");
 234                 already_warned = 1;
 235                 return;
 236         }
 237
 238         while (cur_depth >= file->dir.depth && cur_depth >= min_depth)
 239                 pop_local_filters(filt_array[cur_depth--]);
 240         cur_depth = file->dir.depth;
 241         if (min_depth > cur_depth)
 242                 min_depth = cur_depth;
 243         dlen = strlen(fbuf);
 244         filt_array[cur_depth] = push_local_filters(fbuf, dlen);
 245
 246         if (link_stat(fbuf, &st, keep_dirlinks) < 0)
 247                 return;
 248
 249         if (one_file_system) {
 250                 if (file->flags & FLAG_TOP_DIR)
 251                         filesystem_dev = st.st_dev;
 252                 else if (filesystem_dev != st.st_dev)
 253                         return;
 254         }
 255
 256         dirlist = get_dirlist(fbuf, dlen, 0);
 257
 258         /* If an item in dirlist is not found in flist, delete it
 259          * from the filesystem. */
 260         for (i = dirlist->count; i--; ) {
 261                 struct file_struct *fp = dirlist->files[i];
 262                 if (!fp->basename || fp->flags & FLAG_MOUNT_POINT)
 263                         continue;
 264                 if (flist_find(flist, fp) < 0) {
 265                         int mode = fp->mode;
 266                         f_name_to(fp, delbuf);
 267                         delete_item(delbuf, mode, DEL_FORCE_RECURSE);
 268                 }
 269         }
 270
 271         flist_free(dirlist);
 272 }
 273
 274 /* This deletes any files on the receiving side that are not present on the
 275  * sending side.  This is used by --delete-before and --delete-after. */
 276 static void do_delete_pass(struct file_list *flist)
 277 {
 278         char fbuf[MAXPATHLEN];
 279         int j;
 280
 281         if (dry_run > 1 /* destination doesn't exist yet */
 282          || list_only)
 283                 return;
 284
 285         for (j = 0; j < flist->count; j++) {
 286                 struct file_struct *file = flist->files[j];
 287
 288                 if (!(file->flags & FLAG_DEL_HERE))
 289                         continue;
 290
 291                 f_name_to(file, fbuf);
 292                 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
 293                         rprintf(FINFO, "deleting in %s\n", safe_fname(fbuf));
 294
 295                 delete_in_dir(flist, fbuf, file);
 296         }
 297         if (do_progress && !am_server)
 298                 rprintf(FINFO, "                    \r");
 299 }
 300
 301 static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
 302 {
 303         if (preserve_perms
 304          && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS))
 305                 return 0;
 306
 307         if (am_root && preserve_uid && st->st_uid != file->uid)
 308                 return 0;
 309
 310         if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid)
 311                 return 0;
 312
 313         return 1;
 314 }
 315
 316
 317 void itemize(struct file_struct *file, int ndx, int statret, STRUCT_STAT *st,
 318              int32 iflags, uchar fnamecmp_type, char *xname)
 319 {
 320         if (statret == 0) {
 321                 if (S_ISREG(file->mode) && file->length != st->st_size)
 322                         iflags |= ITEM_REPORT_SIZE;
 323                 if (!(iflags & ITEM_NO_DEST_AND_NO_UPDATE)) {
 324                         int keep_time = !preserve_times ? 0
 325                             : S_ISDIR(file->mode) ? !omit_dir_times
 326                             : !S_ISLNK(file->mode);
 327
 328                         if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
 329                              && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 330                             || (keep_time && cmp_modtime(file->modtime, st->st_mtime) != 0))
 331                                 iflags |= ITEM_REPORT_TIME;
 332                         if (preserve_perms
 333                          && (file->mode & CHMOD_BITS) != (st->st_mode & CHMOD_BITS))
 334                                 iflags |= ITEM_REPORT_PERMS;
 335                         if (preserve_uid && am_root && file->uid != st->st_uid)
 336                                 iflags |= ITEM_REPORT_OWNER;
 337                         if (preserve_gid && file->gid != GID_NONE
 338                             && st->st_gid != file->gid)
 339                                 iflags |= ITEM_REPORT_GROUP;
 340                 }
 341         } else
 342                 iflags |= ITEM_IS_NEW;
 343
 344         iflags &= 0xffff;
 345         if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
 346           || (xname && *xname)) && !read_batch) {
 347                 if (protocol_version >= 29) {
 348                         if (ndx >= 0)
 349                                 write_int(sock_f_out, ndx);
 350                         write_shortint(sock_f_out, iflags);
 351                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 352                                 write_byte(sock_f_out, fnamecmp_type);
 353                         if (iflags & ITEM_XNAME_FOLLOWS)
 354                                 write_vstring(sock_f_out, xname, strlen(xname));
 355                 } else if (ndx >= 0)
 356                         log_item(file, &stats, iflags, xname);
 357         }
 358 }
 359
 360
 361 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 362 static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 363 {
 364         if (st->st_size != file->length)
 365                 return 0;
 366
 367         /* if always checksum is set then we use the checksum instead
 368            of the file time to determine whether to sync */
 369         if (always_checksum && S_ISREG(st->st_mode)) {
 370                 char sum[MD4_SUM_LENGTH];
 371                 file_checksum(fn, sum, st->st_size);
 372                 return memcmp(sum, file->u.sum, protocol_version < 21 ? 2
 373                                                         : MD4_SUM_LENGTH) == 0;
 374         }
 375
 376         if (size_only)
 377                 return 1;
 378
 379         if (ignore_times)
 380                 return 0;
 381
 382         return cmp_modtime(st->st_mtime, file->modtime) == 0;
 383 }
 384
 385
 386 /*
 387  * set (initialize) the size entries in the per-file sum_struct
 388  * calculating dynamic block and checksum sizes.
 389  *
 390  * This is only called from generate_and_send_sums() but is a separate
 391  * function to encapsulate the logic.
 392  *
 393  * The block size is a rounded square root of file length.
 394  *
 395  * The checksum size is determined according to:
 396  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 397  * provided by Donovan Baarda which gives a probability of rsync
 398  * algorithm corrupting data and falling back using the whole md4
 399  * checksums.
 400  *
 401  * This might be made one of several selectable heuristics.
 402  */
 403 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 404 {
 405         int32 blength;
 406         int s2length;
 407
 408         if (block_size)
 409                 blength = block_size;
 410         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 411                 blength = BLOCK_SIZE;
 412         else {
 413                 int32 c;
 414                 int64 l;
 415                 int cnt;
 416                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 417                 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
 418                         blength = MAX_BLOCK_SIZE;
 419                 else {
 420                     blength = 0;
 421                     do {
 422                             blength |= c;
 423                             if (len < (int64)blength * blength)
 424                                     blength &= ~c;
 425                             c >>= 1;
 426                     } while (c >= 8);   /* round to multiple of 8 */
 427                     blength = MAX(blength, BLOCK_SIZE);
 428                 }
 429         }
 430
 431         if (protocol_version < 27) {
 432                 s2length = csum_length;
 433         } else if (csum_length == SUM_LENGTH) {
 434                 s2length = SUM_LENGTH;
 435         } else {
 436                 int32 c;
 437                 int64 l;
 438                 int b = BLOCKSUM_BIAS;
 439                 for (l = len; l >>= 1; b += 2) {}
 440                 for (c = blength; c >>= 1 && b; b--) {}
 441                 /* add a bit, subtract rollsum, round up. */
 442                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 443                 s2length = MAX(s2length, csum_length);
 444                 s2length = MIN(s2length, SUM_LENGTH);
 445         }
 446
 447         sum->flength    = len;
 448         sum->blength    = blength;
 449         sum->s2length   = s2length;
 450         sum->remainder  = len % blength;
 451         sum->count      = len / blength + (sum->remainder != 0);
 452
 453         if (sum->count && verbose > 2) {
 454                 rprintf(FINFO,
 455                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 456                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 457                         sum->s2length, (double)sum->flength);
 458         }
 459 }
 460
 461
 462 /*
 463  * Generate and send a stream of signatures/checksums that describe a buffer
 464  *
 465  * Generate approximately one checksum every block_len bytes.
 466  */
 467 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 468 {
 469         int32 i;
 470         struct map_struct *mapbuf;
 471         struct sum_struct sum;
 472         OFF_T offset = 0;
 473
 474         sum_sizes_sqroot(&sum, len);
 475         write_sum_head(f_out, &sum);
 476
 477         if (append_mode > 0 && f_copy < 0)
 478                 return;
 479
 480         if (len > 0)
 481                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 482         else
 483                 mapbuf = NULL;
 484
 485         for (i = 0; i < sum.count; i++) {
 486                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 487                 char *map = map_ptr(mapbuf, offset, n1);
 488                 char sum2[SUM_LENGTH];
 489                 uint32 sum1;
 490
 491                 len -= n1;
 492                 offset += n1;
 493
 494                 if (f_copy >= 0) {
 495                         full_write(f_copy, map, n1);
 496                         if (append_mode > 0)
 497                                 continue;
 498                 }
 499
 500                 sum1 = get_checksum1(map, n1);
 501                 get_checksum2(map, n1, sum2);
 502
 503                 if (verbose > 3) {
 504                         rprintf(FINFO,
 505                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 506                                 (double)i, (double)offset - n1, (long)n1,
 507                                 (unsigned long)sum1);
 508                 }
 509                 write_int(f_out, sum1);
 510                 write_buf(f_out, sum2, sum.s2length);
 511         }
 512
 513         if (mapbuf)
 514                 unmap_file(mapbuf);
 515 }
 516
 517
 518 /* Try to find a filename in the same dir as "fname" with a similar name. */
 519 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 520 {
 521         int fname_len, fname_suf_len;
 522         const char *fname_suf, *fname = file->basename;
 523         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 524         int j, lowest_j = -1;
 525
 526         fname_len = strlen(fname);
 527         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 528
 529         for (j = 0; j < dirlist->count; j++) {
 530                 struct file_struct *fp = dirlist->files[j];
 531                 const char *suf, *name;
 532                 int len, suf_len;
 533                 uint32 dist;
 534
 535                 if (!S_ISREG(fp->mode) || !fp->length
 536                     || fp->flags & FLAG_NO_FUZZY)
 537                         continue;
 538
 539                 name = fp->basename;
 540
 541                 if (fp->length == file->length
 542                     && cmp_modtime(fp->modtime, file->modtime) == 0) {
 543                         if (verbose > 4) {
 544                                 rprintf(FINFO,
 545                                         "fuzzy size/modtime match for %s\n",
 546                                         name);
 547                         }
 548                         return j;
 549                 }
 550
 551                 len = strlen(name);
 552                 suf = find_filename_suffix(name, len, &suf_len);
 553
 554                 dist = fuzzy_distance(name, len, fname, fname_len);
 555                 /* Add some extra weight to how well the suffixes match. */
 556                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 557                       * 10;
 558                 if (verbose > 4) {
 559                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 560                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 561                 }
 562                 if (dist <= lowest_dist) {
 563                         lowest_dist = dist;
 564                         lowest_j = j;
 565                 }
 566         }
 567
 568         return lowest_j;
 569 }
 570
 571 void check_for_finished_hlinks(int itemizing, enum logcode code)
 572 {
 573         struct file_struct *file;
 574         int ndx;
 575
 576         while ((ndx = get_hlink_num()) != -1) {
 577                 if (ndx < 0 || ndx >= the_file_list->count)
 578                         continue;
 579
 580                 file = the_file_list->files[ndx];
 581                 if (!file->link_u.links)
 582                         continue;
 583
 584                 hard_link_cluster(file, ndx, itemizing, code);
 585         }
 586 }
 587
 588 static int phase = 0;
 589
 590 /* Acts on the_file_list->file's ndx'th item, whose name is fname.  If a dir,
 591  * make sure it exists, and has the right permissions/timestamp info.  For
 592  * all other non-regular files (symlinks, etc.) we create them here.  For
 593  * regular files that have changed, we try to find a basis file and then
 594  * start sending checksums.
 595  *
 596  * Note that f_out is set to -1 when doing final directory-permission and
 597  * modification-time repair. */
 598 static void recv_generator(char *fname, struct file_struct *file, int ndx,
 599                            int itemizing, int maybe_PERMS_REPORT,
 600                            enum logcode code, int f_out)
 601 {
 602         static int missing_below = -1, excluded_below = -1;
 603         static char *fuzzy_dirname = "";
 604         static struct file_list *fuzzy_dirlist = NULL;
 605         struct file_struct *fuzzy_file = NULL;
 606         int fd = -1, f_copy = -1;
 607         STRUCT_STAT st, real_st, partial_st;
 608         struct file_struct *back_file = NULL;
 609         int statret, real_ret, stat_errno;
 610         char *fnamecmp, *partialptr, *backupptr = NULL;
 611         char fnamecmpbuf[MAXPATHLEN];
 612         uchar fnamecmp_type;
 613
 614         if (list_only)
 615                 return;
 616
 617         if (!fname) {
 618                 if (fuzzy_dirlist) {
 619                         flist_free(fuzzy_dirlist);
 620                         fuzzy_dirlist = NULL;
 621                         fuzzy_dirname = "";
 622                 }
 623                 if (missing_below >= 0) {
 624                         dry_run--;
 625                         missing_below = -1;
 626                 }
 627                 return;
 628         }
 629
 630         if (verbose > 2) {
 631                 rprintf(FINFO, "recv_generator(%s,%d)\n",
 632                         safe_fname(fname), ndx);
 633         }
 634
 635         if (server_filter_list.head) {
 636                 if (excluded_below >= 0) {
 637                         if (file->dir.depth > excluded_below)
 638                                 goto skipping;
 639                         excluded_below = -1;
 640                 }
 641                 if (check_filter(&server_filter_list, fname,
 642                                  S_ISDIR(file->mode)) < 0) {
 643                         if (S_ISDIR(file->mode))
 644                                 excluded_below = file->dir.depth;
 645                     skipping:
 646                         if (verbose) {
 647                                 rprintf(FINFO,
 648                                         "skipping server-excluded file \"%s\"\n",
 649                                         safe_fname(fname));
 650                         }
 651                         return;
 652                 }
 653         }
 654
 655         if (missing_below >= 0 && file->dir.depth <= missing_below) {
 656                 dry_run--;
 657                 missing_below = -1;
 658         }
 659         if (dry_run > 1) {
 660                 statret = -1;
 661                 stat_errno = ENOENT;
 662         } else {
 663                 if (fuzzy_basis && S_ISREG(file->mode)) {
 664                         char *dn = file->dirname ? file->dirname : ".";
 665                         if (fuzzy_dirname != dn
 666                             && strcmp(fuzzy_dirname, dn) != 0) {
 667                                 if (fuzzy_dirlist)
 668                                         flist_free(fuzzy_dirlist);
 669                                 fuzzy_dirlist = get_dirlist(dn, -1, 1);
 670                         }
 671                         fuzzy_dirname = dn;
 672                 }
 673
 674                 statret = link_stat(fname, &st,
 675                                     keep_dirlinks && S_ISDIR(file->mode));
 676                 stat_errno = errno;
 677         }
 678
 679         if (ignore_non_existing && statret == -1 && stat_errno == ENOENT) {
 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 & ~CHMOD_BITS) != (file->mode & ~CHMOD_BITS)
 817                  || st.st_rdev != file->u.rdev) {
 818                         if (statret == 0
 819                          && delete_item(fname, st.st_mode, DEL_TERSE) < 0)
 820                                 return;
 821                         if (preserve_hard_links && file->link_u.links
 822                             && hard_link_check(file, ndx, fname, -1, &st,
 823                                                itemizing, code, HL_SKIP))
 824                                 return;
 825                         if (!IS_DEVICE(st.st_mode))
 826                                 statret = -1;
 827                         if (verbose > 2) {
 828                                 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
 829                                         safe_fname(fname),
 830                                         (int)file->mode, (int)file->u.rdev);
 831                         }
 832                         if (do_mknod(fname,file->mode,file->u.rdev) < 0) {
 833                                 rsyserr(FERROR, errno, "mknod %s failed",
 834                                         full_fname(fname));
 835                         } else {
 836                                 set_perms(fname,file,NULL,0);
 837                                 if (itemizing) {
 838                                         itemize(file, ndx, statret, &st,
 839                                                 ITEM_LOCAL_CHANGE, 0, NULL);
 840                                 }
 841                                 if (code && verbose) {
 842                                         rprintf(code, "%s\n",
 843                                                 safe_fname(fname));
 844                                 }
 845                                 if (preserve_hard_links && file->link_u.links) {
 846                                         hard_link_cluster(file, ndx,
 847                                                           itemizing, code);
 848                                 }
 849                         }
 850                 } else {
 851                         if (itemizing)
 852                                 itemize(file, ndx, statret, &st, 0, 0, NULL);
 853                         set_perms(fname, file, &st, maybe_PERMS_REPORT);
 854                         if (preserve_hard_links && file->link_u.links)
 855                                 hard_link_cluster(file, ndx, itemizing, code);
 856                 }
 857                 return;
 858         }
 859
 860         if (!S_ISREG(file->mode)) {
 861                 if (the_file_list->count == 1)
 862                         fname = f_name(file);
 863                 rprintf(FINFO, "skipping non-regular file \"%s\"\n",
 864                         safe_fname(fname));
 865                 return;
 866         }
 867
 868         if (max_size && file->length > max_size) {
 869                 if (verbose > 1) {
 870                         if (the_file_list->count == 1)
 871                                 fname = f_name(file);
 872                         rprintf(FINFO, "%s is over max-size\n",
 873                                 safe_fname(fname));
 874                 }
 875                 return;
 876         }
 877         if (min_size && file->length < min_size) {
 878                 if (verbose > 1) {
 879                         if (the_file_list->count == 1)
 880                                 fname = f_name(file);
 881                         rprintf(FINFO, "%s is under min-size\n",
 882                                 safe_fname(fname));
 883                 }
 884                 return;
 885         }
 886
 887         if (ignore_existing && statret == 0) {
 888                 if (verbose > 1)
 889                         rprintf(FINFO, "%s exists\n", safe_fname(fname));
 890                 return;
 891         }
 892
 893         if (update_only && statret == 0
 894             && cmp_modtime(st.st_mtime, file->modtime) > 0) {
 895                 if (verbose > 1)
 896                         rprintf(FINFO, "%s is newer\n", safe_fname(fname));
 897                 return;
 898         }
 899
 900         fnamecmp = fname;
 901         fnamecmp_type = FNAMECMP_FNAME;
 902
 903         if (statret == 0 && !S_ISREG(st.st_mode)) {
 904                 if (delete_item(fname, st.st_mode, DEL_TERSE) != 0)
 905                         return;
 906                 statret = -1;
 907                 stat_errno = ENOENT;
 908         }
 909
 910         if (statret != 0 && basis_dir[0] != NULL) {
 911                 int best_match = -1;
 912                 int match_level = 0;
 913                 int i = 0;
 914                 do {
 915                         pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 916                                  basis_dir[i], fname);
 917                         if (link_stat(fnamecmpbuf, &st, 0) < 0
 918                             || !S_ISREG(st.st_mode))
 919                                 continue;
 920                         switch (match_level) {
 921                         case 0:
 922                                 best_match = i;
 923                                 match_level = 1;
 924                                 /* FALL THROUGH */
 925                         case 1:
 926                                 if (!unchanged_file(fnamecmpbuf, file, &st))
 927                                         continue;
 928                                 best_match = i;
 929                                 match_level = 2;
 930                                 if (copy_dest)
 931                                         break;
 932                                 /* FALL THROUGH */
 933                         case 2:
 934                                 if (!unchanged_attrs(file, &st))
 935                                         continue;
 936                                 best_match = i;
 937                                 match_level = 3;
 938                                 break;
 939                         }
 940                         break;
 941                 } while (basis_dir[++i] != NULL);
 942                 if (match_level) {
 943                         statret = 0;
 944                         if (i != best_match) {
 945                                 i = best_match;
 946                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 947                                          basis_dir[i], fname);
 948                                 if (link_stat(fnamecmpbuf, &st, 0) < 0) {
 949                                         match_level = 0;
 950                                         statret = -1;
 951                                         stat_errno = errno;
 952                                 }
 953                         }
 954 #ifdef HAVE_LINK
 955                         if (link_dest && match_level == 3) {
 956                                 if (hard_link_one(file, ndx, fname, -1, &st,
 957                                                   fnamecmpbuf, 1,
 958                                                   itemizing && verbose > 1,
 959                                                   code) == 0) {
 960                                         if (preserve_hard_links
 961                                             && file->link_u.links) {
 962                                                 hard_link_cluster(file, ndx,
 963                                                                   itemizing,
 964                                                                   code);
 965                                         }
 966                                         return;
 967                                 }
 968                                 match_level = 2;
 969                         }
 970 #endif
 971                         if (match_level == 2) {
 972                                 /* Copy the file locally. */
 973                                 if (copy_file(fnamecmpbuf, fname, file->mode) < 0) {
 974                                         if (verbose) {
 975                                                 rsyserr(FINFO, errno,
 976                                                         "copy_file %s => %s",
 977                                                         full_fname(fnamecmpbuf),
 978                                                         safe_fname(fname));
 979                                         }
 980                                         match_level = 0;
 981                                         statret = -1;
 982                                 } else {
 983                                         if (itemizing) {
 984                                                 itemize(file, ndx, 0, &st,
 985                                                         ITEM_LOCAL_CHANGE, 0,
 986                                                         NULL);
 987                                         } else if (verbose && code) {
 988                                                 rprintf(code, "%s\n",
 989                                                         safe_fname(fname));
 990                                         }
 991                                         set_perms(fname, file, NULL,
 992                                                   maybe_PERMS_REPORT);
 993                                         if (preserve_hard_links
 994                                             && file->link_u.links) {
 995                                                 hard_link_cluster(file, ndx,
 996                                                                   itemizing,
 997                                                                   code);
 998                                         }
 999                                         return;
1000                                 }
1001                         } else if (compare_dest || match_level == 1) {
1002                                 fnamecmp = fnamecmpbuf;
1003                                 fnamecmp_type = i;
1004                         }
1005                 }
1006         }
1007
1008         real_ret = statret;
1009         real_st = st;
1010
1011         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1012             && link_stat(partialptr, &partial_st, 0) == 0
1013             && S_ISREG(partial_st.st_mode)) {
1014                 if (statret != 0)
1015                         goto prepare_to_open;
1016         } else
1017                 partialptr = NULL;
1018
1019         if (statret != 0 && fuzzy_basis && dry_run <= 1) {
1020                 int j = find_fuzzy(file, fuzzy_dirlist);
1021                 if (j >= 0) {
1022                         fuzzy_file = fuzzy_dirlist->files[j];
1023                         f_name_to(fuzzy_file, fnamecmpbuf);
1024                         if (verbose > 2) {
1025                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1026                                         safe_fname(fname), safe_fname(fnamecmpbuf));
1027                         }
1028                         st.st_size = fuzzy_file->length;
1029                         statret = 0;
1030                         fnamecmp = fnamecmpbuf;
1031                         fnamecmp_type = FNAMECMP_FUZZY;
1032                 }
1033         }
1034
1035         if (statret != 0) {
1036                 if (preserve_hard_links && file->link_u.links
1037                     && hard_link_check(file, ndx, fname, statret, &st,
1038                                        itemizing, code, HL_SKIP))
1039                         return;
1040                 if (stat_errno == ENOENT)
1041                         goto notify_others;
1042                 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1043                         full_fname(fname));
1044                 return;
1045         }
1046
1047         if (append_mode && st.st_size > file->length)
1048                 return;
1049
1050         if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1051                 ;
1052         else if (fnamecmp_type == FNAMECMP_FUZZY)
1053                 ;
1054         else if (unchanged_file(fnamecmp, file, &st)) {
1055                 if (fnamecmp_type == FNAMECMP_FNAME) {
1056                         if (itemizing) {
1057                                 itemize(file, ndx, real_ret, &real_st,
1058                                         0, 0, NULL);
1059                         }
1060                         set_perms(fname, file, &st, maybe_PERMS_REPORT);
1061                         if (preserve_hard_links && file->link_u.links)
1062                                 hard_link_cluster(file, ndx, itemizing, code);
1063                         return;
1064                 }
1065                 /* Only --compare-dest gets here. */
1066                 itemize(file, ndx, real_ret, &real_st,
1067                         ITEM_NO_DEST_AND_NO_UPDATE, 0, NULL);
1068                 return;
1069         }
1070
1071 prepare_to_open:
1072         if (partialptr) {
1073                 st = partial_st;
1074                 fnamecmp = partialptr;
1075                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1076                 statret = 0;
1077         }
1078
1079         if (!do_xfers || read_batch || whole_file)
1080                 goto notify_others;
1081
1082         if (fuzzy_basis) {
1083                 int j = flist_find(fuzzy_dirlist, file);
1084                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1085                         fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY;
1086         }
1087
1088         /* open the file */
1089         fd = do_open(fnamecmp, O_RDONLY, 0);
1090
1091         if (fd == -1) {
1092                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1093                         full_fname(fnamecmp));
1094             pretend_missing:
1095                 /* pretend the file didn't exist */
1096                 if (preserve_hard_links && file->link_u.links
1097                     && hard_link_check(file, ndx, fname, statret, &st,
1098                                        itemizing, code, HL_SKIP))
1099                         return;
1100                 statret = real_ret = -1;
1101                 goto notify_others;
1102         }
1103
1104         if (inplace && make_backups && fnamecmp_type == FNAMECMP_FNAME) {
1105                 if (!(backupptr = get_backup_name(fname))) {
1106                         close(fd);
1107                         return;
1108                 }
1109                 if (!(back_file = make_file(fname, NULL, NO_FILTERS))) {
1110                         close(fd);
1111                         goto pretend_missing;
1112                 }
1113                 if (robust_unlink(backupptr) && errno != ENOENT) {
1114                         rsyserr(FERROR, errno, "unlink %s",
1115                                 full_fname(backupptr));
1116                         free(back_file);
1117                         close(fd);
1118                         return;
1119                 }
1120                 if ((f_copy = do_open(backupptr,
1121                     O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1122                         rsyserr(FERROR, errno, "open %s",
1123                                 full_fname(backupptr));
1124                         free(back_file);
1125                         close(fd);
1126                         return;
1127                 }
1128                 fnamecmp_type = FNAMECMP_BACKUP;
1129         }
1130
1131         if (verbose > 3) {
1132                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1133                         safe_fname(fnamecmp), (double)st.st_size);
1134         }
1135
1136         if (verbose > 2)
1137                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1138
1139 notify_others:
1140         write_int(f_out, ndx);
1141         if (itemizing) {
1142                 int iflags = ITEM_TRANSFER;
1143                 if (always_checksum)
1144                         iflags |= ITEM_REPORT_CHECKSUM;
1145                 if (fnamecmp_type != FNAMECMP_FNAME)
1146                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1147                 if (fnamecmp_type == FNAMECMP_FUZZY)
1148                         iflags |= ITEM_XNAME_FOLLOWS;
1149                 itemize(file, -1, real_ret, &real_st, iflags, fnamecmp_type,
1150                         fuzzy_file ? fuzzy_file->basename : NULL);
1151         }
1152
1153         if (!do_xfers) {
1154                 if (preserve_hard_links && file->link_u.links)
1155                         hard_link_cluster(file, ndx, itemizing, code);
1156                 return;
1157         }
1158         if (read_batch)
1159                 return;
1160
1161         if (statret != 0 || whole_file) {
1162                 write_sum_head(f_out, NULL);
1163                 return;
1164         }
1165
1166         generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1167
1168         if (f_copy >= 0) {
1169                 close(f_copy);
1170                 set_perms(backupptr, back_file, NULL, 0);
1171                 if (verbose > 1) {
1172                         rprintf(FINFO, "backed up %s to %s\n",
1173                                 safe_fname(fname), safe_fname(backupptr));
1174                 }
1175                 free(back_file);
1176         }
1177
1178         close(fd);
1179 }
1180
1181
1182 void generate_files(int f_out, struct file_list *flist, char *local_name)
1183 {
1184         int i;
1185         char fbuf[MAXPATHLEN];
1186         int itemizing, maybe_PERMS_REPORT;
1187         enum logcode code;
1188         int lull_mod = allowed_lull * 5;
1189         int need_retouch_dir_times = preserve_times && !omit_dir_times;
1190         int need_retouch_dir_perms = 0;
1191         int save_ignore_existing = ignore_existing;
1192         int save_ignore_non_existing = ignore_non_existing;
1193         int save_do_progress = do_progress;
1194         int save_make_backups = make_backups;
1195
1196         if (protocol_version >= 29) {
1197                 itemizing = 1;
1198                 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1199                 code = daemon_log_format_has_i ? 0 : FLOG;
1200         } else if (am_daemon) {
1201                 itemizing = daemon_log_format_has_i && do_xfers;
1202                 maybe_PERMS_REPORT = PERMS_REPORT;
1203                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1204         } else if (!am_server) {
1205                 itemizing = log_format_has_i;
1206                 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1207                 code = itemizing ? 0 : FINFO;
1208         } else {
1209                 itemizing = 0;
1210                 maybe_PERMS_REPORT = PERMS_REPORT;
1211                 code = FINFO;
1212         }
1213
1214         if (verbose > 2) {
1215                 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
1216                         (long)getpid(), flist->count);
1217         }
1218
1219         if (delete_before && !local_name && flist->count > 0)
1220                 do_delete_pass(flist);
1221         do_progress = 0;
1222
1223         if (append_mode || whole_file < 0)
1224                 whole_file = 0;
1225         if (verbose >= 2) {
1226                 rprintf(FINFO, "delta-transmission %s\n",
1227                         whole_file
1228                         ? "disabled for local transfer or --whole-file"
1229                         : "enabled");
1230         }
1231
1232         /* Since we often fill up the outgoing socket and then just sit around
1233          * waiting for the other 2 processes to do their thing, we don't want
1234          * to exit on a timeout.  If the data stops flowing, the receiver will
1235          * notice that and let us know via the redo pipe (or its closing). */
1236         ignore_timeout = 1;
1237
1238         for (i = 0; i < flist->count; i++) {
1239                 struct file_struct *file = flist->files[i];
1240
1241                 if (!file->basename)
1242                         continue;
1243
1244                 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
1245                                file, i, itemizing, maybe_PERMS_REPORT, code,
1246                                f_out);
1247
1248                 /* We need to ensure that any dirs we create have writeable
1249                  * permissions during the time we are putting files within
1250                  * them.  This is then fixed after the transfer is done. */
1251 #ifdef HAVE_CHMOD
1252                 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)
1253                     && !list_only) {
1254                         int mode = file->mode | S_IWUSR; /* user write */
1255                         char *fname = local_name ? local_name : fbuf;
1256                         if (do_chmod(fname, mode) < 0) {
1257                                 rsyserr(FERROR, errno,
1258                                         "failed to modify permissions on %s",
1259                                         full_fname(fname));
1260                         }
1261                         need_retouch_dir_perms = 1;
1262                 }
1263 #endif
1264
1265                 if (preserve_hard_links)
1266                         check_for_finished_hlinks(itemizing, code);
1267
1268                 if (allowed_lull && !(i % lull_mod))
1269                         maybe_send_keepalive();
1270                 else if (!(i % 200))
1271                         maybe_flush_socket();
1272         }
1273         recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1274         if (delete_during)
1275                 delete_in_dir(NULL, NULL, NULL);
1276
1277         phase++;
1278         csum_length = SUM_LENGTH;
1279         max_size = min_size = ignore_existing = ignore_non_existing = 0;
1280         update_only = always_checksum = size_only = 0;
1281         ignore_times = 1;
1282         if (append_mode)  /* resend w/o append mode */
1283                 append_mode = -1; /* ... but only longer files */
1284         make_backups = 0; /* avoid a duplicate backup for inplace processing */
1285
1286         if (verbose > 2)
1287                 rprintf(FINFO,"generate_files phase=%d\n",phase);
1288
1289         write_int(f_out, -1);
1290
1291         /* files can cycle through the system more than once
1292          * to catch initial checksum errors */
1293         while ((i = get_redo_num(itemizing, code)) != -1) {
1294                 struct file_struct *file = flist->files[i];
1295                 recv_generator(local_name ? local_name : f_name_to(file, fbuf),
1296                                file, i, itemizing, maybe_PERMS_REPORT, code,
1297                                f_out);
1298         }
1299
1300         phase++;
1301         ignore_non_existing = save_ignore_non_existing;
1302         ignore_existing = save_ignore_existing;
1303         make_backups = save_make_backups;
1304
1305         if (verbose > 2)
1306                 rprintf(FINFO,"generate_files phase=%d\n",phase);
1307
1308         write_int(f_out, -1);
1309         /* Reduce round-trip lag-time for a useless delay-updates phase. */
1310         if (protocol_version >= 29 && !delay_updates)
1311                 write_int(f_out, -1);
1312
1313         /* Read MSG_DONE for the redo phase (and any prior messages). */
1314         get_redo_num(itemizing, code);
1315
1316         if (protocol_version >= 29) {
1317                 phase++;
1318                 if (verbose > 2)
1319                         rprintf(FINFO, "generate_files phase=%d\n", phase);
1320                 if (delay_updates)
1321                         write_int(f_out, -1);
1322                 /* Read MSG_DONE for delay-updates phase & prior messages. */
1323                 get_redo_num(itemizing, code);
1324         }
1325
1326         do_progress = save_do_progress;
1327         if (delete_after && !local_name && flist->count > 0)
1328                 do_delete_pass(flist);
1329
1330         if ((need_retouch_dir_perms || need_retouch_dir_times)
1331             && !list_only && !local_name && !dry_run) {
1332                 int j = 0;
1333                 /* Now we need to fix any directory permissions that were
1334                  * modified during the transfer and/or re-set any tweaked
1335                  * modified-time values. */
1336                 for (i = 0; i < flist->count; i++) {
1337                         struct file_struct *file = flist->files[i];
1338                         if (!file->basename || !S_ISDIR(file->mode))
1339                                 continue;
1340                         if (!need_retouch_dir_times && file->mode & S_IWUSR)
1341                                 continue;
1342                         recv_generator(f_name(file), file, i, itemizing,
1343                                        maybe_PERMS_REPORT, code, -1);
1344                         if (allowed_lull && !(++j % lull_mod))
1345                                 maybe_send_keepalive();
1346                         else if (!(j % 200))
1347                                 maybe_flush_socket();
1348                 }
1349         }
1350         recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1351
1352         if (max_delete > 0 && deletion_count > max_delete) {
1353                 rprintf(FINFO,
1354                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
1355                         deletion_count - max_delete);
1356                 io_error |= IOERR_DEL_LIMIT;
1357         }
1358
1359         if (verbose > 2)
1360                 rprintf(FINFO,"generate_files finished\n");
1361 }