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 int checksum_len;
  73 extern char *partial_dir;
  74 extern char *basis_dir[];
  75 extern int compare_dest;
  76 extern int copy_dest;
  77 extern int link_dest;
  78 extern int whole_file;
  79 extern int list_only;
  80 extern int read_batch;
  81 extern int orig_umask;
  82 extern int safe_symlinks;
  83 extern long block_size; /* "long" because popt can't set an int32. */
  84 extern int max_delete;
  85 extern int force_delete;
  86 extern int one_file_system;
  87 extern struct stats stats;
  88 extern dev_t filesystem_dev;
  89 extern char *backup_dir;
  90 extern char *backup_suffix;
  91 extern int backup_suffix_len;
  92 extern struct file_list *the_file_list;
  93 extern struct filter_list_struct server_filter_list;
  94
  95 static int deletion_count = 0; /* used to implement --max-delete */
  96
  97
  98 static int is_backup_file(char *fn)
  99 {
 100         int k = strlen(fn) - backup_suffix_len;
 101         return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 102 }
 103
 104
 105 /* Delete a file or directory.  If DEL_FORCE_RECURSE is set in the flags, or if
 106  * force_delete is set, this will delete recursively as long as DEL_NO_RECURSE
 107  * is not set in the flags.
 108  *
 109  * Note that fname must point to a MAXPATHLEN buffer if the mode indicates it's
 110  * a directory! (The buffer is used for recursion, but returned unchanged.)
 111  */
 112 static int delete_item(char *fname, int mode, int flags)
 113 {
 114         struct file_list *dirlist;
 115         int j, dlen, zap_dir, ok;
 116         unsigned remainder;
 117         void *save_filters;
 118         char *p;
 119
 120         if (!S_ISDIR(mode)) {
 121                 if (max_delete && ++deletion_count > max_delete)
 122                         return 0;
 123                 if (make_backups && (backup_dir || !is_backup_file(fname)))
 124                         ok = make_backup(fname);
 125                 else
 126                         ok = robust_unlink(fname) == 0;
 127                 if (ok) {
 128                         if (!(flags & DEL_TERSE))
 129                                 log_delete(fname, mode);
 130                         return 0;
 131                 }
 132                 if (errno == ENOENT) {
 133                         deletion_count--;
 134                         return 0;
 135                 }
 136                 rsyserr(FERROR, errno, "delete_file: unlink %s failed",
 137                         full_fname(fname));
 138                 return -1;
 139         }
 140
 141         zap_dir = (flags & DEL_FORCE_RECURSE || (force_delete && recurse))
 142                 && !(flags & DEL_NO_RECURSE);
 143         if ((max_delete && ++deletion_count > max_delete)
 144             || (dry_run && zap_dir)) {
 145                 ok = 0;
 146                 errno = ENOTEMPTY;
 147         } else if (make_backups && !backup_dir && !is_backup_file(fname)
 148             && !(flags & DEL_FORCE_RECURSE))
 149                 ok = make_backup(fname);
 150         else
 151                 ok = do_rmdir(fname) == 0;
 152         if (ok) {
 153                 if (!(flags & DEL_TERSE))
 154                         log_delete(fname, mode);
 155                 return 0;
 156         }
 157         if (errno == ENOENT) {
 158                 deletion_count--;
 159                 return 0;
 160         }
 161         if (!zap_dir) {
 162                 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
 163                         full_fname(fname));
 164                 return -1;
 165         }
 166         flags |= DEL_FORCE_RECURSE; /* mark subdir dels as not "in the way" */
 167         deletion_count--;
 168
 169         dlen = strlen(fname);
 170         save_filters = push_local_filters(fname, dlen);
 171
 172         dirlist = get_dirlist(fname, dlen, 0);
 173
 174         p = fname + dlen;
 175         if (dlen != 1 || *fname != '/')
 176                 *p++ = '/';
 177         remainder = MAXPATHLEN - (p - fname);
 178
 179         for (j = dirlist->count; j--; ) {
 180                 struct file_struct *fp = dirlist->files[j];
 181
 182                 if (fp->flags & FLAG_MOUNT_POINT)
 183                         continue;
 184
 185                 strlcpy(p, fp->basename, remainder);
 186                 delete_item(fname, fp->mode, flags & ~DEL_TERSE);
 187         }
 188         flist_free(dirlist);
 189
 190         fname[dlen] = '\0';
 191
 192         pop_local_filters(save_filters);
 193
 194         if (max_delete && ++deletion_count > max_delete)
 195                 return 0;
 196
 197         if (do_rmdir(fname) == 0) {
 198                 if (!(flags & DEL_TERSE))
 199                         log_delete(fname, mode);
 200         } else if (errno != ENOTEMPTY && errno != EEXIST && errno != ENOENT) {
 201                 rsyserr(FERROR, errno, "delete_file: rmdir %s failed",
 202                         full_fname(fname));
 203                 return -1;
 204         }
 205
 206         return 0;
 207 }
 208
 209
 210 /* This function is used to implement per-directory deletion, and is used by
 211  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 212  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 213  * call will append names onto the end, but the old dir value will be restored
 214  * on exit). */
 215 static void delete_in_dir(struct file_list *flist, char *fbuf,
 216                           struct file_struct *file)
 217 {
 218         static int min_depth = MAXPATHLEN, cur_depth = -1;
 219         static void *filt_array[MAXPATHLEN/2+1];
 220         static int already_warned = 0;
 221         struct file_list *dirlist;
 222         char delbuf[MAXPATHLEN];
 223         STRUCT_STAT st;
 224         int dlen, i;
 225
 226         if (!flist) {
 227                 while (cur_depth >= min_depth)
 228                         pop_local_filters(filt_array[cur_depth--]);
 229                 min_depth = MAXPATHLEN;
 230                 cur_depth = -1;
 231                 return;
 232         }
 233
 234         if (verbose > 2)
 235                 rprintf(FINFO, "delete_in_dir(%s)\n", safe_fname(fbuf));
 236
 237         if (allowed_lull)
 238                 maybe_send_keepalive();
 239
 240         if (file->dir.depth >= MAXPATHLEN/2+1)
 241                 return; /* Impossible... */
 242
 243         if (io_error && !(lp_ignore_errors(module_id) || ignore_errors)) {
 244                 if (already_warned)
 245                         return;
 246                 rprintf(FINFO,
 247                         "IO error encountered -- skipping file deletion\n");
 248                 already_warned = 1;
 249                 return;
 250         }
 251
 252         while (cur_depth >= file->dir.depth && cur_depth >= min_depth)
 253                 pop_local_filters(filt_array[cur_depth--]);
 254         cur_depth = file->dir.depth;
 255         if (min_depth > cur_depth)
 256                 min_depth = cur_depth;
 257         dlen = strlen(fbuf);
 258         filt_array[cur_depth] = push_local_filters(fbuf, dlen);
 259
 260         if (link_stat(fbuf, &st, keep_dirlinks) < 0)
 261                 return;
 262
 263         if (one_file_system) {
 264                 if (file->flags & FLAG_TOP_DIR)
 265                         filesystem_dev = st.st_dev;
 266                 else if (filesystem_dev != st.st_dev)
 267                         return;
 268         }
 269
 270         dirlist = get_dirlist(fbuf, dlen, 0);
 271
 272         /* If an item in dirlist is not found in flist, delete it
 273          * from the filesystem. */
 274         for (i = dirlist->count; i--; ) {
 275                 struct file_struct *fp = dirlist->files[i];
 276                 if (!fp->basename || fp->flags & FLAG_MOUNT_POINT)
 277                         continue;
 278                 if (flist_find(flist, fp) < 0) {
 279                         int mode = fp->mode;
 280                         f_name_to(fp, delbuf);
 281                         delete_item(delbuf, mode, DEL_FORCE_RECURSE);
 282                 }
 283         }
 284
 285         flist_free(dirlist);
 286 }
 287
 288 /* This deletes any files on the receiving side that are not present on the
 289  * sending side.  This is used by --delete-before and --delete-after. */
 290 static void do_delete_pass(struct file_list *flist)
 291 {
 292         char fbuf[MAXPATHLEN];
 293         int j;
 294
 295         if (dry_run > 1 /* destination doesn't exist yet */
 296          || list_only)
 297                 return;
 298
 299         for (j = 0; j < flist->count; j++) {
 300                 struct file_struct *file = flist->files[j];
 301
 302                 if (!(file->flags & FLAG_DEL_HERE))
 303                         continue;
 304
 305                 f_name_to(file, fbuf);
 306                 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
 307                         rprintf(FINFO, "deleting in %s\n", safe_fname(fbuf));
 308
 309                 delete_in_dir(flist, fbuf, file);
 310         }
 311         delete_in_dir(NULL, NULL, NULL);
 312
 313         if (do_progress && !am_server)
 314                 rprintf(FINFO, "                    \r");
 315 }
 316
 317 static int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
 318 {
 319         if (preserve_perms
 320          && (st->st_mode & CHMOD_BITS) != (file->mode & CHMOD_BITS))
 321                 return 0;
 322
 323         if (am_root && preserve_uid && st->st_uid != file->uid)
 324                 return 0;
 325
 326         if (preserve_gid && file->gid != GID_NONE && st->st_gid != file->gid)
 327                 return 0;
 328
 329         return 1;
 330 }
 331
 332
 333 void itemize(struct file_struct *file, int ndx, int statret, STRUCT_STAT *st,
 334              int32 iflags, uchar fnamecmp_type, char *xname)
 335 {
 336         if (statret == 0) {
 337                 if (S_ISREG(file->mode) && file->length != st->st_size)
 338                         iflags |= ITEM_REPORT_SIZE;
 339                 if (!(iflags & ITEM_NO_DEST_AND_NO_UPDATE)) {
 340                         int keep_time = !preserve_times ? 0
 341                             : S_ISDIR(file->mode) ? !omit_dir_times
 342                             : !S_ISLNK(file->mode);
 343
 344                         if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
 345                              && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 346                             || (keep_time && cmp_modtime(file->modtime, st->st_mtime) != 0))
 347                                 iflags |= ITEM_REPORT_TIME;
 348                         if (preserve_perms
 349                          && (file->mode & CHMOD_BITS) != (st->st_mode & CHMOD_BITS))
 350                                 iflags |= ITEM_REPORT_PERMS;
 351                         if (preserve_uid && am_root && file->uid != st->st_uid)
 352                                 iflags |= ITEM_REPORT_OWNER;
 353                         if (preserve_gid && file->gid != GID_NONE
 354                             && st->st_gid != file->gid)
 355                                 iflags |= ITEM_REPORT_GROUP;
 356                 }
 357         } else
 358                 iflags |= ITEM_IS_NEW;
 359
 360         iflags &= 0xffff;
 361         if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
 362           || (xname && *xname)) && !read_batch) {
 363                 if (protocol_version >= 29) {
 364                         if (ndx >= 0)
 365                                 write_int(sock_f_out, ndx);
 366                         write_shortint(sock_f_out, iflags);
 367                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 368                                 write_byte(sock_f_out, fnamecmp_type);
 369                         if (iflags & ITEM_XNAME_FOLLOWS)
 370                                 write_vstring(sock_f_out, xname, strlen(xname));
 371                 } else if (ndx >= 0)
 372                         log_item(file, &stats, iflags, xname);
 373         }
 374 }
 375
 376
 377 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 378 static int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 379 {
 380         if (st->st_size != file->length)
 381                 return 0;
 382
 383         /* if always checksum is set then we use the checksum instead
 384            of the file time to determine whether to sync */
 385         if (always_checksum && S_ISREG(st->st_mode)) {
 386                 char sum[MD4_SUM_LENGTH];
 387                 file_checksum(fn, sum, st->st_size);
 388                 return memcmp(sum, file->u.sum, checksum_len) == 0;
 389         }
 390
 391         if (size_only)
 392                 return 1;
 393
 394         if (ignore_times)
 395                 return 0;
 396
 397         return cmp_modtime(st->st_mtime, file->modtime) == 0;
 398 }
 399
 400
 401 /*
 402  * set (initialize) the size entries in the per-file sum_struct
 403  * calculating dynamic block and checksum sizes.
 404  *
 405  * This is only called from generate_and_send_sums() but is a separate
 406  * function to encapsulate the logic.
 407  *
 408  * The block size is a rounded square root of file length.
 409  *
 410  * The checksum size is determined according to:
 411  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 412  * provided by Donovan Baarda which gives a probability of rsync
 413  * algorithm corrupting data and falling back using the whole md4
 414  * checksums.
 415  *
 416  * This might be made one of several selectable heuristics.
 417  */
 418 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 419 {
 420         int32 blength;
 421         int s2length;
 422
 423         if (block_size)
 424                 blength = block_size;
 425         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 426                 blength = BLOCK_SIZE;
 427         else {
 428                 int32 c;
 429                 int64 l;
 430                 int cnt;
 431                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 432                 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
 433                         blength = MAX_BLOCK_SIZE;
 434                 else {
 435                     blength = 0;
 436                     do {
 437                             blength |= c;
 438                             if (len < (int64)blength * blength)
 439                                     blength &= ~c;
 440                             c >>= 1;
 441                     } while (c >= 8);   /* round to multiple of 8 */
 442                     blength = MAX(blength, BLOCK_SIZE);
 443                 }
 444         }
 445
 446         if (protocol_version < 27) {
 447                 s2length = csum_length;
 448         } else if (csum_length == SUM_LENGTH) {
 449                 s2length = SUM_LENGTH;
 450         } else {
 451                 int32 c;
 452                 int64 l;
 453                 int b = BLOCKSUM_BIAS;
 454                 for (l = len; l >>= 1; b += 2) {}
 455                 for (c = blength; c >>= 1 && b; b--) {}
 456                 /* add a bit, subtract rollsum, round up. */
 457                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 458                 s2length = MAX(s2length, csum_length);
 459                 s2length = MIN(s2length, SUM_LENGTH);
 460         }
 461
 462         sum->flength    = len;
 463         sum->blength    = blength;
 464         sum->s2length   = s2length;
 465         sum->remainder  = len % blength;
 466         sum->count      = len / blength + (sum->remainder != 0);
 467
 468         if (sum->count && verbose > 2) {
 469                 rprintf(FINFO,
 470                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 471                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 472                         sum->s2length, (double)sum->flength);
 473         }
 474 }
 475
 476
 477 /*
 478  * Generate and send a stream of signatures/checksums that describe a buffer
 479  *
 480  * Generate approximately one checksum every block_len bytes.
 481  */
 482 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 483 {
 484         int32 i;
 485         struct map_struct *mapbuf;
 486         struct sum_struct sum;
 487         OFF_T offset = 0;
 488
 489         sum_sizes_sqroot(&sum, len);
 490         write_sum_head(f_out, &sum);
 491
 492         if (append_mode > 0 && f_copy < 0)
 493                 return;
 494
 495         if (len > 0)
 496                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 497         else
 498                 mapbuf = NULL;
 499
 500         for (i = 0; i < sum.count; i++) {
 501                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 502                 char *map = map_ptr(mapbuf, offset, n1);
 503                 char sum2[SUM_LENGTH];
 504                 uint32 sum1;
 505
 506                 len -= n1;
 507                 offset += n1;
 508
 509                 if (f_copy >= 0) {
 510                         full_write(f_copy, map, n1);
 511                         if (append_mode > 0)
 512                                 continue;
 513                 }
 514
 515                 sum1 = get_checksum1(map, n1);
 516                 get_checksum2(map, n1, sum2);
 517
 518                 if (verbose > 3) {
 519                         rprintf(FINFO,
 520                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 521                                 (double)i, (double)offset - n1, (long)n1,
 522                                 (unsigned long)sum1);
 523                 }
 524                 write_int(f_out, sum1);
 525                 write_buf(f_out, sum2, sum.s2length);
 526         }
 527
 528         if (mapbuf)
 529                 unmap_file(mapbuf);
 530 }
 531
 532
 533 /* Try to find a filename in the same dir as "fname" with a similar name. */
 534 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 535 {
 536         int fname_len, fname_suf_len;
 537         const char *fname_suf, *fname = file->basename;
 538         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 539         int j, lowest_j = -1;
 540
 541         fname_len = strlen(fname);
 542         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 543
 544         for (j = 0; j < dirlist->count; j++) {
 545                 struct file_struct *fp = dirlist->files[j];
 546                 const char *suf, *name;
 547                 int len, suf_len;
 548                 uint32 dist;
 549
 550                 if (!S_ISREG(fp->mode) || !fp->length
 551                     || fp->flags & FLAG_NO_FUZZY)
 552                         continue;
 553
 554                 name = fp->basename;
 555
 556                 if (fp->length == file->length
 557                     && cmp_modtime(fp->modtime, file->modtime) == 0) {
 558                         if (verbose > 4) {
 559                                 rprintf(FINFO,
 560                                         "fuzzy size/modtime match for %s\n",
 561                                         name);
 562                         }
 563                         return j;
 564                 }
 565
 566                 len = strlen(name);
 567                 suf = find_filename_suffix(name, len, &suf_len);
 568
 569                 dist = fuzzy_distance(name, len, fname, fname_len);
 570                 /* Add some extra weight to how well the suffixes match. */
 571                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 572                       * 10;
 573                 if (verbose > 4) {
 574                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 575                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 576                 }
 577                 if (dist <= lowest_dist) {
 578                         lowest_dist = dist;
 579                         lowest_j = j;
 580                 }
 581         }
 582
 583         return lowest_j;
 584 }
 585
 586 void check_for_finished_hlinks(int itemizing, enum logcode code)
 587 {
 588         struct file_struct *file;
 589         int ndx;
 590
 591         while ((ndx = get_hlink_num()) != -1) {
 592                 if (ndx < 0 || ndx >= the_file_list->count)
 593                         continue;
 594
 595                 file = the_file_list->files[ndx];
 596                 if (!file->link_u.links)
 597                         continue;
 598
 599                 hard_link_cluster(file, ndx, itemizing, code);
 600         }
 601 }
 602
 603 static int phase = 0;
 604
 605 /* Acts on the_file_list->file's ndx'th item, whose name is fname.  If a dir,
 606  * make sure it exists, and has the right permissions/timestamp info.  For
 607  * all other non-regular files (symlinks, etc.) we create them here.  For
 608  * regular files that have changed, we try to find a basis file and then
 609  * start sending checksums.
 610  *
 611  * When fname is non-null, it must point to a MAXPATHLEN buffer!
 612  *
 613  * Note that f_out is set to -1 when doing final directory-permission and
 614  * modification-time repair. */
 615 static void recv_generator(char *fname, struct file_struct *file, int ndx,
 616                            int itemizing, int maybe_PERMS_REPORT,
 617                            enum logcode code, int f_out)
 618 {
 619         static int missing_below = -1, excluded_below = -1;
 620         static char *fuzzy_dirname = "";
 621         static struct file_list *fuzzy_dirlist = NULL;
 622         struct file_struct *fuzzy_file = NULL;
 623         int fd = -1, f_copy = -1;
 624         STRUCT_STAT st, real_st, partial_st;
 625         struct file_struct *back_file = NULL;
 626         int statret, real_ret, stat_errno;
 627         char *fnamecmp, *partialptr, *backupptr = NULL;
 628         char fnamecmpbuf[MAXPATHLEN];
 629         uchar fnamecmp_type;
 630
 631         if (list_only)
 632                 return;
 633
 634         if (!fname) {
 635                 if (fuzzy_dirlist) {
 636                         flist_free(fuzzy_dirlist);
 637                         fuzzy_dirlist = NULL;
 638                         fuzzy_dirname = "";
 639                 }
 640                 if (missing_below >= 0) {
 641                         dry_run--;
 642                         missing_below = -1;
 643                 }
 644                 return;
 645         }
 646
 647         if (verbose > 2) {
 648                 rprintf(FINFO, "recv_generator(%s,%d)\n",
 649                         safe_fname(fname), ndx);
 650         }
 651
 652         if (server_filter_list.head) {
 653                 if (excluded_below >= 0) {
 654                         if (file->dir.depth > excluded_below)
 655                                 goto skipping;
 656                         excluded_below = -1;
 657                 }
 658                 if (check_filter(&server_filter_list, fname,
 659                                  S_ISDIR(file->mode)) < 0) {
 660                         if (S_ISDIR(file->mode))
 661                                 excluded_below = file->dir.depth;
 662                     skipping:
 663                         if (verbose) {
 664                                 rprintf(FINFO,
 665                                         "skipping server-excluded file \"%s\"\n",
 666                                         safe_fname(fname));
 667                         }
 668                         return;
 669                 }
 670         }
 671
 672         if (missing_below >= 0 && file->dir.depth <= missing_below) {
 673                 dry_run--;
 674                 missing_below = -1;
 675         }
 676         if (dry_run > 1) {
 677                 statret = -1;
 678                 stat_errno = ENOENT;
 679         } else {
 680                 if (fuzzy_basis && S_ISREG(file->mode)) {
 681                         char *dn = file->dirname ? file->dirname : ".";
 682                         if (fuzzy_dirname != dn
 683                             && strcmp(fuzzy_dirname, dn) != 0) {
 684                                 if (fuzzy_dirlist)
 685                                         flist_free(fuzzy_dirlist);
 686                                 fuzzy_dirlist = get_dirlist(dn, -1, 1);
 687                         }
 688                         fuzzy_dirname = dn;
 689                 }
 690
 691                 statret = link_stat(fname, &st,
 692                                     keep_dirlinks && S_ISDIR(file->mode));
 693                 stat_errno = errno;
 694         }
 695
 696         if (ignore_non_existing && statret == -1 && stat_errno == ENOENT) {
 697                 if (verbose > 1) {
 698                         rprintf(FINFO, "not creating new %s \"%s\"\n",
 699                                 S_ISDIR(file->mode) ? "directory" : "file",
 700                                 safe_fname(fname));
 701                 }
 702                 return;
 703         }
 704
 705         if (statret == 0 && !preserve_perms
 706             && S_ISDIR(st.st_mode) == S_ISDIR(file->mode)) {
 707                 /* if the file exists already and we aren't perserving
 708                  * permissions then act as though the remote end sent
 709                  * us the file permissions we already have */
 710                 file->mode = (file->mode & ~CHMOD_BITS)
 711                            | (st.st_mode & CHMOD_BITS);
 712         }
 713
 714         if (S_ISDIR(file->mode)) {
 715                 /* The file to be received is a directory, so we need
 716                  * to prepare appropriately.  If there is already a
 717                  * file of that name and it is *not* a directory, then
 718                  * we need to delete it.  If it doesn't exist, then
 719                  * (perhaps recursively) create it. */
 720                 if (statret == 0 && !S_ISDIR(st.st_mode)) {
 721                         if (delete_item(fname, st.st_mode, DEL_TERSE) < 0)
 722                                 return;
 723                         statret = -1;
 724                 }
 725                 if (dry_run && statret != 0 && missing_below < 0) {
 726                         missing_below = file->dir.depth;
 727                         dry_run++;
 728                 }
 729                 if (itemizing && f_out != -1) {
 730                         itemize(file, ndx, statret, &st,
 731                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
 732                 }
 733                 if (statret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
 734                         if (!relative_paths || errno != ENOENT
 735                             || create_directory_path(fname, orig_umask) < 0
 736                             || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
 737                                 rsyserr(FERROR, errno,
 738                                         "recv_generator: mkdir %s failed",
 739                                         full_fname(fname));
 740                         }
 741                 }
 742                 if (set_perms(fname, file, statret ? NULL : &st, 0)
 743                     && verbose && code && f_out != -1)
 744                         rprintf(code, "%s/\n", safe_fname(fname));
 745                 if (delete_during && f_out != -1 && !phase && dry_run < 2
 746                     && (file->flags & FLAG_DEL_HERE))
 747                         delete_in_dir(the_file_list, fname, file);
 748                 return;
 749         }
 750
 751         if (preserve_hard_links && file->link_u.links
 752             && hard_link_check(file, ndx, fname, statret, &st,
 753                                itemizing, code, HL_CHECK_MASTER))
 754                 return;
 755
 756         if (preserve_links && S_ISLNK(file->mode)) {
 757 #ifdef SUPPORT_LINKS
 758                 if (safe_symlinks && unsafe_symlink(file->u.link, fname)) {
 759                         if (verbose) {
 760                                 if (the_file_list->count == 1)
 761                                         fname = f_name(file);
 762                                 rprintf(FINFO,
 763                                         "ignoring unsafe symlink %s -> \"%s\"\n",
 764                                         full_fname(fname),
 765                                         safe_fname(file->u.link));
 766                         }
 767                         return;
 768                 }
 769                 if (statret == 0) {
 770                         char lnk[MAXPATHLEN];
 771                         int len;
 772
 773                         if (!S_ISDIR(st.st_mode)
 774                             && (len = readlink(fname, lnk, MAXPATHLEN-1)) > 0) {
 775                                 lnk[len] = 0;
 776                                 /* A link already pointing to the
 777                                  * right place -- no further action
 778                                  * required. */
 779                                 if (strcmp(lnk, file->u.link) == 0) {
 780                                         if (itemizing) {
 781                                                 itemize(file, ndx, 0, &st, 0,
 782                                                         0, NULL);
 783                                         }
 784                                         set_perms(fname, file, &st,
 785                                                   maybe_PERMS_REPORT);
 786                                         if (preserve_hard_links
 787                                             && file->link_u.links) {
 788                                                 hard_link_cluster(file, ndx,
 789                                                                   itemizing,
 790                                                                   code);
 791                                         }
 792                                         return;
 793                                 }
 794                         }
 795                         /* Not the right symlink (or not a symlink), so
 796                          * delete it. */
 797                         if (delete_item(fname, st.st_mode, DEL_TERSE) < 0)
 798                                 return;
 799                         if (!S_ISLNK(st.st_mode))
 800                                 statret = -1;
 801                 }
 802                 if (preserve_hard_links && file->link_u.links
 803                     && hard_link_check(file, ndx, fname, -1, &st,
 804                                        itemizing, code, HL_SKIP))
 805                         return;
 806                 if (do_symlink(file->u.link,fname) != 0) {
 807                         rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
 808                                 full_fname(fname), safe_fname(file->u.link));
 809                 } else {
 810                         set_perms(fname,file,NULL,0);
 811                         if (itemizing) {
 812                                 itemize(file, ndx, statret, &st,
 813                                         ITEM_LOCAL_CHANGE, 0, NULL);
 814                         }
 815                         if (code && verbose) {
 816                                 rprintf(code, "%s -> %s\n", safe_fname(fname),
 817                                         safe_fname(file->u.link));
 818                         }
 819                         if (remove_sent_files && !dry_run) {
 820                                 char numbuf[4];
 821                                 SIVAL(numbuf, 0, ndx);
 822                                 send_msg(MSG_SUCCESS, numbuf, 4);
 823                         }
 824                         if (preserve_hard_links && file->link_u.links)
 825                                 hard_link_cluster(file, ndx, itemizing, code);
 826                 }
 827 #endif
 828                 return;
 829         }
 830
 831         if (am_root && preserve_devices && IS_DEVICE(file->mode)) {
 832                 if (statret != 0
 833                  || (st.st_mode & ~CHMOD_BITS) != (file->mode & ~CHMOD_BITS)
 834                  || st.st_rdev != file->u.rdev) {
 835                         if (statret == 0
 836                          && delete_item(fname, st.st_mode, DEL_TERSE) < 0)
 837                                 return;
 838                         if (preserve_hard_links && file->link_u.links
 839                             && hard_link_check(file, ndx, fname, -1, &st,
 840                                                itemizing, code, HL_SKIP))
 841                                 return;
 842                         if (!IS_DEVICE(st.st_mode))
 843                                 statret = -1;
 844                         if (verbose > 2) {
 845                                 rprintf(FINFO,"mknod(%s,0%o,0x%x)\n",
 846                                         safe_fname(fname),
 847                                         (int)file->mode, (int)file->u.rdev);
 848                         }
 849                         if (do_mknod(fname,file->mode,file->u.rdev) < 0) {
 850                                 rsyserr(FERROR, errno, "mknod %s failed",
 851                                         full_fname(fname));
 852                         } else {
 853                                 set_perms(fname,file,NULL,0);
 854                                 if (itemizing) {
 855                                         itemize(file, ndx, statret, &st,
 856                                                 ITEM_LOCAL_CHANGE, 0, NULL);
 857                                 }
 858                                 if (code && verbose) {
 859                                         rprintf(code, "%s\n",
 860                                                 safe_fname(fname));
 861                                 }
 862                                 if (preserve_hard_links && file->link_u.links) {
 863                                         hard_link_cluster(file, ndx,
 864                                                           itemizing, code);
 865                                 }
 866                         }
 867                 } else {
 868                         if (itemizing)
 869                                 itemize(file, ndx, statret, &st, 0, 0, NULL);
 870                         set_perms(fname, file, &st, maybe_PERMS_REPORT);
 871                         if (preserve_hard_links && file->link_u.links)
 872                                 hard_link_cluster(file, ndx, itemizing, code);
 873                 }
 874                 return;
 875         }
 876
 877         if (!S_ISREG(file->mode)) {
 878                 if (the_file_list->count == 1)
 879                         fname = f_name(file);
 880                 rprintf(FINFO, "skipping non-regular file \"%s\"\n",
 881                         safe_fname(fname));
 882                 return;
 883         }
 884
 885         if (max_size && file->length > max_size) {
 886                 if (verbose > 1) {
 887                         if (the_file_list->count == 1)
 888                                 fname = f_name(file);
 889                         rprintf(FINFO, "%s is over max-size\n",
 890                                 safe_fname(fname));
 891                 }
 892                 return;
 893         }
 894         if (min_size && file->length < min_size) {
 895                 if (verbose > 1) {
 896                         if (the_file_list->count == 1)
 897                                 fname = f_name(file);
 898                         rprintf(FINFO, "%s is under min-size\n",
 899                                 safe_fname(fname));
 900                 }
 901                 return;
 902         }
 903
 904         if (ignore_existing && statret == 0) {
 905                 if (verbose > 1)
 906                         rprintf(FINFO, "%s exists\n", safe_fname(fname));
 907                 return;
 908         }
 909
 910         if (update_only && statret == 0
 911             && cmp_modtime(st.st_mtime, file->modtime) > 0) {
 912                 if (verbose > 1)
 913                         rprintf(FINFO, "%s is newer\n", safe_fname(fname));
 914                 return;
 915         }
 916
 917         fnamecmp = fname;
 918         fnamecmp_type = FNAMECMP_FNAME;
 919
 920         if (statret == 0 && !S_ISREG(st.st_mode)) {
 921                 if (delete_item(fname, st.st_mode, DEL_TERSE) != 0)
 922                         return;
 923                 statret = -1;
 924                 stat_errno = ENOENT;
 925         }
 926
 927         if (statret != 0 && basis_dir[0] != NULL) {
 928                 int best_match = -1;
 929                 int match_level = 0;
 930                 int i = 0;
 931                 do {
 932                         pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 933                                  basis_dir[i], fname);
 934                         if (link_stat(fnamecmpbuf, &st, 0) < 0
 935                             || !S_ISREG(st.st_mode))
 936                                 continue;
 937                         switch (match_level) {
 938                         case 0:
 939                                 best_match = i;
 940                                 match_level = 1;
 941                                 /* FALL THROUGH */
 942                         case 1:
 943                                 if (!unchanged_file(fnamecmpbuf, file, &st))
 944                                         continue;
 945                                 best_match = i;
 946                                 match_level = 2;
 947                                 if (copy_dest)
 948                                         break;
 949                                 /* FALL THROUGH */
 950                         case 2:
 951                                 if (!unchanged_attrs(file, &st))
 952                                         continue;
 953                                 best_match = i;
 954                                 match_level = 3;
 955                                 break;
 956                         }
 957                         break;
 958                 } while (basis_dir[++i] != NULL);
 959                 if (match_level) {
 960                         statret = 0;
 961                         if (i != best_match) {
 962                                 i = best_match;
 963                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 964                                          basis_dir[i], fname);
 965                                 if (link_stat(fnamecmpbuf, &st, 0) < 0) {
 966                                         match_level = 0;
 967                                         statret = -1;
 968                                         stat_errno = errno;
 969                                 }
 970                         }
 971 #ifdef HAVE_LINK
 972                         if (link_dest && match_level == 3) {
 973                                 if (hard_link_one(file, ndx, fname, -1, &st,
 974                                                   fnamecmpbuf, 1,
 975                                                   itemizing && verbose > 1,
 976                                                   code) == 0) {
 977                                         if (preserve_hard_links
 978                                             && file->link_u.links) {
 979                                                 hard_link_cluster(file, ndx,
 980                                                                   itemizing,
 981                                                                   code);
 982                                         }
 983                                         return;
 984                                 }
 985                                 match_level = 2;
 986                         }
 987 #endif
 988                         if (match_level == 2) {
 989                                 /* Copy the file locally. */
 990                                 if (copy_file(fnamecmpbuf, fname, file->mode) < 0) {
 991                                         if (verbose) {
 992                                                 rsyserr(FINFO, errno,
 993                                                         "copy_file %s => %s",
 994                                                         full_fname(fnamecmpbuf),
 995                                                         safe_fname(fname));
 996                                         }
 997                                         match_level = 0;
 998                                         statret = -1;
 999                                 } else {
1000                                         if (itemizing) {
1001                                                 itemize(file, ndx, 0, &st,
1002                                                         ITEM_LOCAL_CHANGE, 0,
1003                                                         NULL);
1004                                         } else if (verbose && code) {
1005                                                 rprintf(code, "%s\n",
1006                                                         safe_fname(fname));
1007                                         }
1008                                         set_perms(fname, file, NULL,
1009                                                   maybe_PERMS_REPORT);
1010                                         if (preserve_hard_links
1011                                             && file->link_u.links) {
1012                                                 hard_link_cluster(file, ndx,
1013                                                                   itemizing,
1014                                                                   code);
1015                                         }
1016                                         return;
1017                                 }
1018                         } else if (compare_dest || match_level == 1) {
1019                                 fnamecmp = fnamecmpbuf;
1020                                 fnamecmp_type = i;
1021                         }
1022                 }
1023         }
1024
1025         real_ret = statret;
1026         real_st = st;
1027
1028         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1029             && link_stat(partialptr, &partial_st, 0) == 0
1030             && S_ISREG(partial_st.st_mode)) {
1031                 if (statret != 0)
1032                         goto prepare_to_open;
1033         } else
1034                 partialptr = NULL;
1035
1036         if (statret != 0 && fuzzy_basis && dry_run <= 1) {
1037                 int j = find_fuzzy(file, fuzzy_dirlist);
1038                 if (j >= 0) {
1039                         fuzzy_file = fuzzy_dirlist->files[j];
1040                         f_name_to(fuzzy_file, fnamecmpbuf);
1041                         if (verbose > 2) {
1042                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1043                                         safe_fname(fname), safe_fname(fnamecmpbuf));
1044                         }
1045                         st.st_size = fuzzy_file->length;
1046                         statret = 0;
1047                         fnamecmp = fnamecmpbuf;
1048                         fnamecmp_type = FNAMECMP_FUZZY;
1049                 }
1050         }
1051
1052         if (statret != 0) {
1053                 if (preserve_hard_links && file->link_u.links
1054                     && hard_link_check(file, ndx, fname, statret, &st,
1055                                        itemizing, code, HL_SKIP))
1056                         return;
1057                 if (stat_errno == ENOENT)
1058                         goto notify_others;
1059                 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1060                         full_fname(fname));
1061                 return;
1062         }
1063
1064         if (append_mode && st.st_size > file->length)
1065                 return;
1066
1067         if (!compare_dest && fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1068                 ;
1069         else if (fnamecmp_type == FNAMECMP_FUZZY)
1070                 ;
1071         else if (unchanged_file(fnamecmp, file, &st)) {
1072                 if (partialptr) {
1073                         do_unlink(partialptr);
1074                         handle_partial_dir(partialptr, PDIR_DELETE);
1075                 }
1076                 if (fnamecmp_type == FNAMECMP_FNAME) {
1077                         if (itemizing) {
1078                                 itemize(file, ndx, real_ret, &real_st,
1079                                         0, 0, NULL);
1080                         }
1081                         set_perms(fname, file, &st, maybe_PERMS_REPORT);
1082                         if (preserve_hard_links && file->link_u.links)
1083                                 hard_link_cluster(file, ndx, itemizing, code);
1084                         return;
1085                 }
1086                 /* Only --compare-dest gets here. */
1087                 itemize(file, ndx, real_ret, &real_st,
1088                         ITEM_NO_DEST_AND_NO_UPDATE, 0, NULL);
1089                 return;
1090         }
1091
1092 prepare_to_open:
1093         if (partialptr) {
1094                 st = partial_st;
1095                 fnamecmp = partialptr;
1096                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1097                 statret = 0;
1098         }
1099
1100         if (!do_xfers || read_batch || whole_file)
1101                 goto notify_others;
1102
1103         if (fuzzy_basis) {
1104                 int j = flist_find(fuzzy_dirlist, file);
1105                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1106                         fuzzy_dirlist->files[j]->flags |= FLAG_NO_FUZZY;
1107         }
1108
1109         /* open the file */
1110         fd = do_open(fnamecmp, O_RDONLY, 0);
1111
1112         if (fd == -1) {
1113                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1114                         full_fname(fnamecmp));
1115             pretend_missing:
1116                 /* pretend the file didn't exist */
1117                 if (preserve_hard_links && file->link_u.links
1118                     && hard_link_check(file, ndx, fname, statret, &st,
1119                                        itemizing, code, HL_SKIP))
1120                         return;
1121                 statret = real_ret = -1;
1122                 goto notify_others;
1123         }
1124
1125         if (inplace && make_backups && fnamecmp_type == FNAMECMP_FNAME) {
1126                 if (!(backupptr = get_backup_name(fname))) {
1127                         close(fd);
1128                         return;
1129                 }
1130                 if (!(back_file = make_file(fname, NULL, NO_FILTERS))) {
1131                         close(fd);
1132                         goto pretend_missing;
1133                 }
1134                 if (robust_unlink(backupptr) && errno != ENOENT) {
1135                         rsyserr(FERROR, errno, "unlink %s",
1136                                 full_fname(backupptr));
1137                         free(back_file);
1138                         close(fd);
1139                         return;
1140                 }
1141                 if ((f_copy = do_open(backupptr,
1142                     O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1143                         rsyserr(FERROR, errno, "open %s",
1144                                 full_fname(backupptr));
1145                         free(back_file);
1146                         close(fd);
1147                         return;
1148                 }
1149                 fnamecmp_type = FNAMECMP_BACKUP;
1150         }
1151
1152         if (verbose > 3) {
1153                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1154                         safe_fname(fnamecmp), (double)st.st_size);
1155         }
1156
1157         if (verbose > 2)
1158                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1159
1160 notify_others:
1161         write_int(f_out, ndx);
1162         if (itemizing) {
1163                 int iflags = ITEM_TRANSFER;
1164                 if (always_checksum)
1165                         iflags |= ITEM_REPORT_CHECKSUM;
1166                 if (fnamecmp_type != FNAMECMP_FNAME)
1167                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1168                 if (fnamecmp_type == FNAMECMP_FUZZY)
1169                         iflags |= ITEM_XNAME_FOLLOWS;
1170                 itemize(file, -1, real_ret, &real_st, iflags, fnamecmp_type,
1171                         fuzzy_file ? fuzzy_file->basename : NULL);
1172         }
1173
1174         if (!do_xfers) {
1175                 if (preserve_hard_links && file->link_u.links)
1176                         hard_link_cluster(file, ndx, itemizing, code);
1177                 return;
1178         }
1179         if (read_batch)
1180                 return;
1181
1182         if (statret != 0 || whole_file) {
1183                 write_sum_head(f_out, NULL);
1184                 return;
1185         }
1186
1187         generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1188
1189         if (f_copy >= 0) {
1190                 close(f_copy);
1191                 set_perms(backupptr, back_file, NULL, 0);
1192                 if (verbose > 1) {
1193                         rprintf(FINFO, "backed up %s to %s\n",
1194                                 safe_fname(fname), safe_fname(backupptr));
1195                 }
1196                 free(back_file);
1197         }
1198
1199         close(fd);
1200 }
1201
1202
1203 void generate_files(int f_out, struct file_list *flist, char *local_name)
1204 {
1205         int i;
1206         char fbuf[MAXPATHLEN];
1207         int itemizing, maybe_PERMS_REPORT;
1208         enum logcode code;
1209         int lull_mod = allowed_lull * 5;
1210         int need_retouch_dir_times = preserve_times && !omit_dir_times;
1211         int need_retouch_dir_perms = 0;
1212         int save_ignore_existing = ignore_existing;
1213         int save_ignore_non_existing = ignore_non_existing;
1214         int save_do_progress = do_progress;
1215         int save_make_backups = make_backups;
1216
1217         if (protocol_version >= 29) {
1218                 itemizing = 1;
1219                 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1220                 code = daemon_log_format_has_i ? 0 : FLOG;
1221         } else if (am_daemon) {
1222                 itemizing = daemon_log_format_has_i && do_xfers;
1223                 maybe_PERMS_REPORT = PERMS_REPORT;
1224                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1225         } else if (!am_server) {
1226                 itemizing = log_format_has_i;
1227                 maybe_PERMS_REPORT = log_format_has_i ? 0 : PERMS_REPORT;
1228                 code = itemizing ? 0 : FINFO;
1229         } else {
1230                 itemizing = 0;
1231                 maybe_PERMS_REPORT = PERMS_REPORT;
1232                 code = FINFO;
1233         }
1234
1235         if (verbose > 2) {
1236                 rprintf(FINFO, "generator starting pid=%ld count=%d\n",
1237                         (long)getpid(), flist->count);
1238         }
1239
1240         if (delete_before && !local_name && flist->count > 0)
1241                 do_delete_pass(flist);
1242         do_progress = 0;
1243
1244         if (append_mode || whole_file < 0)
1245                 whole_file = 0;
1246         if (verbose >= 2) {
1247                 rprintf(FINFO, "delta-transmission %s\n",
1248                         whole_file
1249                         ? "disabled for local transfer or --whole-file"
1250                         : "enabled");
1251         }
1252
1253         /* Since we often fill up the outgoing socket and then just sit around
1254          * waiting for the other 2 processes to do their thing, we don't want
1255          * to exit on a timeout.  If the data stops flowing, the receiver will
1256          * notice that and let us know via the redo pipe (or its closing). */
1257         ignore_timeout = 1;
1258
1259         for (i = 0; i < flist->count; i++) {
1260                 struct file_struct *file = flist->files[i];
1261
1262                 if (!file->basename)
1263                         continue;
1264
1265                 if (local_name)
1266                         strlcpy(fbuf, local_name, sizeof fbuf);
1267                 else
1268                         f_name_to(file, fbuf);
1269                 recv_generator(fbuf, file, i, itemizing, maybe_PERMS_REPORT,
1270                                code, f_out);
1271
1272                 /* We need to ensure that any dirs we create have writeable
1273                  * permissions during the time we are putting files within
1274                  * them.  This is then fixed after the transfer is done. */
1275 #ifdef HAVE_CHMOD
1276                 if (!am_root && S_ISDIR(file->mode) && !(file->mode & S_IWUSR)
1277                     && !list_only) {
1278                         int mode = file->mode | S_IWUSR; /* user write */
1279                         char *fname = local_name ? local_name : fbuf;
1280                         if (do_chmod(fname, mode) < 0) {
1281                                 rsyserr(FERROR, errno,
1282                                         "failed to modify permissions on %s",
1283                                         full_fname(fname));
1284                         }
1285                         need_retouch_dir_perms = 1;
1286                 }
1287 #endif
1288
1289                 if (preserve_hard_links)
1290                         check_for_finished_hlinks(itemizing, code);
1291
1292                 if (allowed_lull && !(i % lull_mod))
1293                         maybe_send_keepalive();
1294                 else if (!(i % 200))
1295                         maybe_flush_socket();
1296         }
1297         recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1298         if (delete_during)
1299                 delete_in_dir(NULL, NULL, NULL);
1300
1301         phase++;
1302         csum_length = SUM_LENGTH;
1303         max_size = min_size = ignore_existing = ignore_non_existing = 0;
1304         update_only = always_checksum = size_only = 0;
1305         ignore_times = 1;
1306         if (append_mode)  /* resend w/o append mode */
1307                 append_mode = -1; /* ... but only longer files */
1308         make_backups = 0; /* avoid a duplicate backup for inplace processing */
1309
1310         if (verbose > 2)
1311                 rprintf(FINFO,"generate_files phase=%d\n",phase);
1312
1313         write_int(f_out, -1);
1314
1315         /* files can cycle through the system more than once
1316          * to catch initial checksum errors */
1317         while ((i = get_redo_num(itemizing, code)) != -1) {
1318                 struct file_struct *file = flist->files[i];
1319                 if (local_name)
1320                         strlcpy(fbuf, local_name, sizeof fbuf);
1321                 else
1322                         f_name_to(file, fbuf);
1323                 recv_generator(fbuf, file, i, itemizing, maybe_PERMS_REPORT,
1324                                code, f_out);
1325         }
1326
1327         phase++;
1328         ignore_non_existing = save_ignore_non_existing;
1329         ignore_existing = save_ignore_existing;
1330         make_backups = save_make_backups;
1331
1332         if (verbose > 2)
1333                 rprintf(FINFO,"generate_files phase=%d\n",phase);
1334
1335         write_int(f_out, -1);
1336         /* Reduce round-trip lag-time for a useless delay-updates phase. */
1337         if (protocol_version >= 29 && !delay_updates)
1338                 write_int(f_out, -1);
1339
1340         /* Read MSG_DONE for the redo phase (and any prior messages). */
1341         get_redo_num(itemizing, code);
1342
1343         if (protocol_version >= 29) {
1344                 phase++;
1345                 if (verbose > 2)
1346                         rprintf(FINFO, "generate_files phase=%d\n", phase);
1347                 if (delay_updates)
1348                         write_int(f_out, -1);
1349                 /* Read MSG_DONE for delay-updates phase & prior messages. */
1350                 get_redo_num(itemizing, code);
1351         }
1352
1353         do_progress = save_do_progress;
1354         if (delete_after && !local_name && flist->count > 0)
1355                 do_delete_pass(flist);
1356
1357         if ((need_retouch_dir_perms || need_retouch_dir_times)
1358             && !list_only && !local_name && !dry_run) {
1359                 int j = 0;
1360                 /* Now we need to fix any directory permissions that were
1361                  * modified during the transfer and/or re-set any tweaked
1362                  * modified-time values. */
1363                 for (i = 0; i < flist->count; i++) {
1364                         struct file_struct *file = flist->files[i];
1365                         if (!file->basename || !S_ISDIR(file->mode))
1366                                 continue;
1367                         if (!need_retouch_dir_times && file->mode & S_IWUSR)
1368                                 continue;
1369                         recv_generator(f_name(file), file, i, itemizing,
1370                                        maybe_PERMS_REPORT, code, -1);
1371                         if (allowed_lull && !(++j % lull_mod))
1372                                 maybe_send_keepalive();
1373                         else if (!(j % 200))
1374                                 maybe_flush_socket();
1375                 }
1376         }
1377         recv_generator(NULL, NULL, 0, 0, 0, code, -1);
1378
1379         if (max_delete > 0 && deletion_count > max_delete) {
1380                 rprintf(FINFO,
1381                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
1382                         deletion_count - max_delete);
1383                 io_error |= IOERR_DEL_LIMIT;
1384         }
1385
1386         if (verbose > 2)
1387                 rprintf(FINFO,"generate_files finished\n");
1388 }