generator.c

   1 /*
   2  * Routines that are exclusive to the generator process.
   3  *
   4  * Copyright (C) 1996-2000 Andrew Tridgell
   5  * Copyright (C) 1996 Paul Mackerras
   6  * Copyright (C) 2002 Martin Pool <mbp@samba.org>
   7  * Copyright (C) 2003, 2004, 2005, 2006, 2007 Wayne Davison
   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 along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 stdout_format_has_i;
  30 extern int logfile_format_has_i;
  31 extern int am_root;
  32 extern int am_server;
  33 extern int am_daemon;
  34 extern int inc_recurse;
  35 extern int do_progress;
  36 extern int relative_paths;
  37 extern int implied_dirs;
  38 extern int keep_dirlinks;
  39 extern int preserve_links;
  40 extern int preserve_devices;
  41 extern int preserve_specials;
  42 extern int preserve_hard_links;
  43 extern int preserve_perms;
  44 extern int preserve_uid;
  45 extern int preserve_gid;
  46 extern int preserve_times;
  47 extern int omit_dir_times;
  48 extern int delete_mode;
  49 extern int delete_before;
  50 extern int delete_during;
  51 extern int delete_after;
  52 extern int msgdone_cnt;
  53 extern int ignore_errors;
  54 extern int remove_source_files;
  55 extern int delay_updates;
  56 extern int update_only;
  57 extern int ignore_existing;
  58 extern int ignore_non_existing;
  59 extern int inplace;
  60 extern int append_mode;
  61 extern int make_backups;
  62 extern int csum_length;
  63 extern int ignore_times;
  64 extern int size_only;
  65 extern OFF_T max_size;
  66 extern OFF_T min_size;
  67 extern int io_error;
  68 extern int flist_eof;
  69 extern int allowed_lull;
  70 extern int sock_f_out;
  71 extern int ignore_timeout;
  72 extern int protocol_version;
  73 extern int file_total;
  74 extern int fuzzy_basis;
  75 extern int always_checksum;
  76 extern int checksum_len;
  77 extern char *partial_dir;
  78 extern char *basis_dir[];
  79 extern int compare_dest;
  80 extern int copy_dest;
  81 extern int link_dest;
  82 extern int whole_file;
  83 extern int list_only;
  84 extern int new_root_dir;
  85 extern int read_batch;
  86 extern int safe_symlinks;
  87 extern long block_size; /* "long" because popt can't set an int32. */
  88 extern int max_delete;
  89 extern int force_delete;
  90 extern int one_file_system;
  91 extern struct stats stats;
  92 extern dev_t filesystem_dev;
  93 extern char *backup_dir;
  94 extern char *backup_suffix;
  95 extern int backup_suffix_len;
  96 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  97 extern struct filter_list_struct server_filter_list;
  98
  99 int ignore_perishable = 0;
 100 int non_perishable_cnt = 0;
 101 int maybe_ATTRS_REPORT = 0;
 102
 103 static dev_t dev_zero;
 104 static int deletion_count = 0; /* used to implement --max-delete */
 105 static int deldelay_size = 0, deldelay_cnt = 0;
 106 static char *deldelay_buf = NULL;
 107 static int deldelay_fd = -1;
 108 static int lull_mod;
 109 static int dir_tweaking;
 110 static int need_retouch_dir_times;
 111 static const char *solo_file = NULL;
 112
 113 /* For calling delete_item() and delete_dir_contents(). */
 114 #define DEL_RECURSE             (1<<1) /* recurse */
 115 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 116
 117 enum nonregtype {
 118     TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
 119 };
 120
 121 enum delret {
 122     DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 123 };
 124
 125 /* Forward declaration for delete_item(). */
 126 static enum delret delete_dir_contents(char *fname, int flags);
 127
 128
 129 static int is_backup_file(char *fn)
 130 {
 131         int k = strlen(fn) - backup_suffix_len;
 132         return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 133 }
 134
 135 /* Delete a file or directory.  If DEL_RECURSE is set in the flags, this will
 136  * delete recursively.
 137  *
 138  * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
 139  * a directory! (The buffer is used for recursion, but returned unchanged.)
 140  */
 141 static enum delret delete_item(char *fbuf, int mode, char *replace, int flags)
 142 {
 143         enum delret ret;
 144         char *what;
 145         int ok;
 146
 147         if (verbose > 2) {
 148                 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
 149                         fbuf, mode, flags);
 150         }
 151
 152         if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
 153                 ignore_perishable = 1;
 154                 /* If DEL_RECURSE is not set, this just reports emptiness. */
 155                 ret = delete_dir_contents(fbuf, flags);
 156                 ignore_perishable = 0;
 157                 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
 158                         goto check_ret;
 159                 /* OK: try to delete the directory. */
 160         }
 161
 162         if (!replace && max_delete >= 0 && ++deletion_count > max_delete)
 163                 return DR_AT_LIMIT;
 164
 165         if (S_ISDIR(mode)) {
 166                 what = "rmdir";
 167                 ok = do_rmdir(fbuf) == 0;
 168         } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
 169                 what = "make_backup";
 170                 ok = make_backup(fbuf);
 171         } else {
 172                 what = "unlink";
 173                 ok = robust_unlink(fbuf) == 0;
 174         }
 175
 176         if (ok) {
 177                 if (!replace)
 178                         log_delete(fbuf, mode);
 179                 ret = DR_SUCCESS;
 180         } else {
 181                 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
 182                         rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 183                                 fbuf);
 184                         ret = DR_NOT_EMPTY;
 185                 } else if (errno != ENOENT) {
 186                         rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
 187                                 what, fbuf);
 188                         ret = DR_FAILURE;
 189                 } else {
 190                         deletion_count--;
 191                         ret = DR_SUCCESS;
 192                 }
 193         }
 194
 195   check_ret:
 196         if (replace && ret != DR_SUCCESS) {
 197                 rprintf(FERROR, "could not make way for new %s: %s\n",
 198                         replace, fbuf);
 199         }
 200         return ret;
 201 }
 202
 203 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
 204  * its contents, otherwise just checks for content.  Returns DR_SUCCESS or
 205  * DR_NOT_EMPTY.  Note that fname must point to a MAXPATHLEN buffer!  (The
 206  * buffer is used for recursion, but returned unchanged.)
 207  */
 208 static enum delret delete_dir_contents(char *fname, int flags)
 209 {
 210         struct file_list *dirlist;
 211         enum delret ret;
 212         unsigned remainder;
 213         void *save_filters;
 214         int j, dlen;
 215         char *p;
 216
 217         if (verbose > 3) {
 218                 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
 219                         fname, flags);
 220         }
 221
 222         dlen = strlen(fname);
 223         save_filters = push_local_filters(fname, dlen);
 224
 225         non_perishable_cnt = 0;
 226         dirlist = get_dirlist(fname, dlen, 0);
 227         ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
 228
 229         if (!dirlist->count)
 230                 goto done;
 231
 232         if (!(flags & DEL_RECURSE)) {
 233                 ret = DR_NOT_EMPTY;
 234                 goto done;
 235         }
 236
 237         p = fname + dlen;
 238         if (dlen != 1 || *fname != '/')
 239                 *p++ = '/';
 240         remainder = MAXPATHLEN - (p - fname);
 241
 242         /* We do our own recursion, so make delete_item() non-recursive. */
 243         flags = (flags & ~DEL_RECURSE) | DEL_DIR_IS_EMPTY;
 244
 245         for (j = dirlist->count; j--; ) {
 246                 struct file_struct *fp = dirlist->files[j];
 247
 248                 if (fp->flags & FLAG_MOUNT_DIR) {
 249                         if (verbose > 1) {
 250                                 rprintf(FINFO,
 251                                     "mount point, %s, pins parent directory\n",
 252                                     f_name(fp, NULL));
 253                         }
 254                         ret = DR_NOT_EMPTY;
 255                         continue;
 256                 }
 257
 258                 strlcpy(p, fp->basename, remainder);
 259                 /* Save stack by recursing to ourself directly. */
 260                 if (S_ISDIR(fp->mode)
 261                  && delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
 262                         ret = DR_NOT_EMPTY;
 263                 if (delete_item(fname, fp->mode, NULL, flags) != DR_SUCCESS)
 264                         ret = DR_NOT_EMPTY;
 265         }
 266
 267         fname[dlen] = '\0';
 268
 269   done:
 270         flist_free(dirlist);
 271         pop_local_filters(save_filters);
 272
 273         if (ret == DR_NOT_EMPTY) {
 274                 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 275                         fname);
 276         }
 277         return ret;
 278 }
 279
 280 static int start_delete_delay_temp(void)
 281 {
 282         char fnametmp[MAXPATHLEN];
 283         int save_dry_run = dry_run;
 284
 285         dry_run = 0;
 286         if (!get_tmpname(fnametmp, "deldelay")
 287          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 288                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 289                         inc_recurse ? "" : " -- switching to --delete-after");
 290                 delete_during = 0;
 291                 delete_after = !inc_recurse;
 292                 dry_run = save_dry_run;
 293                 return 0;
 294         }
 295         unlink(fnametmp);
 296         dry_run = save_dry_run;
 297         return 1;
 298 }
 299
 300 static int flush_delete_delay(void)
 301 {
 302         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 303                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 304                 delete_during = 0;
 305                 delete_after = 1;
 306                 close(deldelay_fd);
 307                 return 0;
 308         }
 309         deldelay_cnt = 0;
 310         return 1;
 311 }
 312
 313 static int remember_delete(struct file_struct *file, const char *fname)
 314 {
 315         int len;
 316
 317         while (1) {
 318                 len = snprintf(deldelay_buf + deldelay_cnt,
 319                                deldelay_size - deldelay_cnt,
 320                                "%x %s%c", (int)file->mode, fname, '\0');
 321                 if ((deldelay_cnt += len) <= deldelay_size)
 322                         break;
 323                 if (deldelay_fd < 0 && !start_delete_delay_temp())
 324                         return 0;
 325                 deldelay_cnt -= len;
 326                 if (!flush_delete_delay())
 327                         return 0;
 328         }
 329
 330         return 1;
 331 }
 332
 333 static int read_delay_line(char *buf)
 334 {
 335         static int read_pos = 0;
 336         int j, len, mode;
 337         char *bp, *past_space;
 338
 339         while (1) {
 340                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 341                 if (j < deldelay_cnt)
 342                         break;
 343                 if (deldelay_fd < 0) {
 344                         if (j > read_pos)
 345                                 goto invalid_data;
 346                         return -1;
 347                 }
 348                 deldelay_cnt -= read_pos;
 349                 if (deldelay_cnt == deldelay_size)
 350                         goto invalid_data;
 351                 if (deldelay_cnt && read_pos) {
 352                         memmove(deldelay_buf, deldelay_buf + read_pos,
 353                                 deldelay_cnt);
 354                 }
 355                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 356                            deldelay_size - deldelay_cnt);
 357                 if (len == 0) {
 358                         if (deldelay_cnt) {
 359                                 rprintf(FERROR,
 360                                     "ERROR: unexpected EOF in delete-delay file.\n");
 361                         }
 362                         return -1;
 363                 }
 364                 if (len < 0) {
 365                         rsyserr(FERROR, errno,
 366                                 "reading delete-delay file");
 367                         return -1;
 368                 }
 369                 deldelay_cnt += len;
 370                 read_pos = 0;
 371         }
 372
 373         bp = deldelay_buf + read_pos;
 374
 375         if (sscanf(bp, "%x ", &mode) != 1) {
 376           invalid_data:
 377                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 378                 return -1;
 379         }
 380         past_space = strchr(bp, ' ') + 1;
 381         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 382         read_pos = j + 1;
 383
 384         if (len > MAXPATHLEN) {
 385                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 386                 return -1;
 387         }
 388
 389         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 390          * instead of returning a pointer to our buffer. */
 391         memcpy(buf, past_space, len);
 392
 393         return mode;
 394 }
 395
 396 static void do_delayed_deletions(char *delbuf)
 397 {
 398         int mode;
 399
 400         if (deldelay_fd >= 0) {
 401                 if (deldelay_cnt && !flush_delete_delay())
 402                         return;
 403                 lseek(deldelay_fd, 0, 0);
 404         }
 405         while ((mode = read_delay_line(delbuf)) >= 0)
 406                 delete_item(delbuf, mode, NULL, DEL_RECURSE);
 407         if (deldelay_fd >= 0)
 408                 close(deldelay_fd);
 409 }
 410
 411 /* This function is used to implement per-directory deletion, and is used by
 412  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 413  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 414  * call will append names onto the end, but the old dir value will be restored
 415  * on exit). */
 416 static void delete_in_dir(struct file_list *flist, char *fbuf,
 417                           struct file_struct *file, dev_t *fs_dev)
 418 {
 419         static int already_warned = 0;
 420         struct file_list *dirlist;
 421         char delbuf[MAXPATHLEN];
 422         int dlen, i;
 423
 424         if (!flist) {
 425                 change_local_filter_dir(NULL, 0, 0);
 426                 return;
 427         }
 428
 429         if (verbose > 2)
 430                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 431
 432         if (allowed_lull)
 433                 maybe_send_keepalive();
 434
 435         if (io_error && !ignore_errors) {
 436                 if (already_warned)
 437                         return;
 438                 rprintf(FINFO,
 439                         "IO error encountered -- skipping file deletion\n");
 440                 already_warned = 1;
 441                 return;
 442         }
 443
 444         dlen = strlen(fbuf);
 445         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 446
 447         if (one_file_system) {
 448                 if (file->flags & FLAG_TOP_DIR)
 449                         filesystem_dev = *fs_dev;
 450                 else if (filesystem_dev != *fs_dev)
 451                         return;
 452         }
 453
 454         dirlist = get_dirlist(fbuf, dlen, 0);
 455
 456         /* If an item in dirlist is not found in flist, delete it
 457          * from the filesystem. */
 458         for (i = dirlist->count; i--; ) {
 459                 struct file_struct *fp = dirlist->files[i];
 460                 if (!F_IS_ACTIVE(fp))
 461                         continue;
 462                 if (fp->flags & FLAG_MOUNT_DIR) {
 463                         if (verbose > 1)
 464                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 465                                         f_name(fp, NULL));
 466                         continue;
 467                 }
 468                 if (flist_find(flist, fp) < 0) {
 469                         f_name(fp, delbuf);
 470                         if (delete_during == 2) {
 471                                 if (!remember_delete(fp, delbuf))
 472                                         break;
 473                         } else
 474                                 delete_item(delbuf, fp->mode, NULL, DEL_RECURSE);
 475                 }
 476         }
 477
 478         flist_free(dirlist);
 479 }
 480
 481 /* This deletes any files on the receiving side that are not present on the
 482  * sending side.  This is used by --delete-before and --delete-after. */
 483 static void do_delete_pass(struct file_list *flist)
 484 {
 485         char fbuf[MAXPATHLEN];
 486         STRUCT_STAT st;
 487         int j;
 488
 489         /* dry_run is incremented when the destination doesn't exist yet. */
 490         if (dry_run > 1 || list_only)
 491                 return;
 492
 493         for (j = 0; j < flist->count; j++) {
 494                 struct file_struct *file = flist->files[j];
 495
 496                 if (!(file->flags & FLAG_XFER_DIR))
 497                         continue;
 498
 499                 f_name(file, fbuf);
 500                 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
 501                         rprintf(FINFO, "deleting in %s\n", fbuf);
 502
 503                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 504                  || !S_ISDIR(st.st_mode))
 505                         continue;
 506
 507                 delete_in_dir(flist, fbuf, file, &st.st_dev);
 508         }
 509         delete_in_dir(NULL, NULL, NULL, &dev_zero);
 510
 511         if (do_progress && !am_server)
 512                 rprintf(FINFO, "                    \r");
 513 }
 514
 515 int unchanged_attrs(struct file_struct *file, STRUCT_STAT *st)
 516 {
 517         if (preserve_perms && !BITS_EQUAL(st->st_mode, file->mode, CHMOD_BITS))
 518                 return 0;
 519
 520         if (am_root && preserve_uid && st->st_uid != F_UID(file))
 521                 return 0;
 522
 523         if (preserve_gid && F_GID(file) != GID_NONE && st->st_gid != F_GID(file))
 524                 return 0;
 525
 526         return 1;
 527 }
 528
 529 void itemize(struct file_struct *file, int ndx, int statret,
 530              STRUCT_STAT *st, int32 iflags, uchar fnamecmp_type,
 531              const char *xname)
 532 {
 533         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 534                 int keep_time = !preserve_times ? 0
 535                     : S_ISDIR(file->mode) ? !omit_dir_times
 536                     : !S_ISLNK(file->mode);
 537
 538                 if (S_ISREG(file->mode) && F_LENGTH(file) != st->st_size)
 539                         iflags |= ITEM_REPORT_SIZE;
 540                 if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
 541                   && !(iflags & ITEM_MATCHED)
 542                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 543                  || (keep_time && cmp_time(file->modtime, st->st_mtime) != 0))
 544                         iflags |= ITEM_REPORT_TIME;
 545                 if (!BITS_EQUAL(st->st_mode, file->mode, CHMOD_BITS))
 546                         iflags |= ITEM_REPORT_PERMS;
 547                 if (preserve_uid && am_root && F_UID(file) != st->st_uid)
 548                         iflags |= ITEM_REPORT_OWNER;
 549                 if (preserve_gid && F_GID(file) != GID_NONE
 550                     && st->st_gid != F_GID(file))
 551                         iflags |= ITEM_REPORT_GROUP;
 552         } else
 553                 iflags |= ITEM_IS_NEW;
 554
 555         iflags &= 0xffff;
 556         if ((iflags & SIGNIFICANT_ITEM_FLAGS || verbose > 1
 557           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 558                 if (protocol_version >= 29) {
 559                         if (ndx >= 0)
 560                                 write_ndx(sock_f_out, ndx + cur_flist->ndx_start);
 561                         write_shortint(sock_f_out, iflags);
 562                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 563                                 write_byte(sock_f_out, fnamecmp_type);
 564                         if (iflags & ITEM_XNAME_FOLLOWS)
 565                                 write_vstring(sock_f_out, xname, strlen(xname));
 566                 } else if (ndx >= 0) {
 567                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 568                         log_item(code, file, &stats, iflags, xname);
 569                 }
 570         }
 571 }
 572
 573
 574 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 575 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 576 {
 577         if (st->st_size != F_LENGTH(file))
 578                 return 0;
 579
 580         /* if always checksum is set then we use the checksum instead
 581            of the file time to determine whether to sync */
 582         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 583                 char sum[MD4_SUM_LENGTH];
 584                 file_checksum(fn, sum, st->st_size);
 585                 return memcmp(sum, F_SUM(file), checksum_len) == 0;
 586         }
 587
 588         if (size_only > 0)
 589                 return 1;
 590
 591         if (ignore_times)
 592                 return 0;
 593
 594         return cmp_time(st->st_mtime, file->modtime) == 0;
 595 }
 596
 597
 598 /*
 599  * set (initialize) the size entries in the per-file sum_struct
 600  * calculating dynamic block and checksum sizes.
 601  *
 602  * This is only called from generate_and_send_sums() but is a separate
 603  * function to encapsulate the logic.
 604  *
 605  * The block size is a rounded square root of file length.
 606  *
 607  * The checksum size is determined according to:
 608  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 609  * provided by Donovan Baarda which gives a probability of rsync
 610  * algorithm corrupting data and falling back using the whole md4
 611  * checksums.
 612  *
 613  * This might be made one of several selectable heuristics.
 614  */
 615 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 616 {
 617         int32 blength;
 618         int s2length;
 619
 620         if (block_size)
 621                 blength = block_size;
 622         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 623                 blength = BLOCK_SIZE;
 624         else {
 625                 int32 c;
 626                 int64 l;
 627                 int cnt;
 628                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 629                 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
 630                         blength = MAX_BLOCK_SIZE;
 631                 else {
 632                     blength = 0;
 633                     do {
 634                             blength |= c;
 635                             if (len < (int64)blength * blength)
 636                                     blength &= ~c;
 637                             c >>= 1;
 638                     } while (c >= 8);   /* round to multiple of 8 */
 639                     blength = MAX(blength, BLOCK_SIZE);
 640                 }
 641         }
 642
 643         if (protocol_version < 27) {
 644                 s2length = csum_length;
 645         } else if (csum_length == SUM_LENGTH) {
 646                 s2length = SUM_LENGTH;
 647         } else {
 648                 int32 c;
 649                 int64 l;
 650                 int b = BLOCKSUM_BIAS;
 651                 for (l = len; l >>= 1; b += 2) {}
 652                 for (c = blength; (c >>= 1) && b; b--) {}
 653                 /* add a bit, subtract rollsum, round up. */
 654                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 655                 s2length = MAX(s2length, csum_length);
 656                 s2length = MIN(s2length, SUM_LENGTH);
 657         }
 658
 659         sum->flength    = len;
 660         sum->blength    = blength;
 661         sum->s2length   = s2length;
 662         sum->remainder  = (int32)(len % blength);
 663         sum->count      = (int32)(len / blength) + (sum->remainder != 0);
 664
 665         if (sum->count && verbose > 2) {
 666                 rprintf(FINFO,
 667                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 668                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 669                         sum->s2length, (double)sum->flength);
 670         }
 671 }
 672
 673
 674 /*
 675  * Generate and send a stream of signatures/checksums that describe a buffer
 676  *
 677  * Generate approximately one checksum every block_len bytes.
 678  */
 679 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 680 {
 681         int32 i;
 682         struct map_struct *mapbuf;
 683         struct sum_struct sum;
 684         OFF_T offset = 0;
 685
 686         sum_sizes_sqroot(&sum, len);
 687         write_sum_head(f_out, &sum);
 688
 689         if (append_mode > 0 && f_copy < 0)
 690                 return;
 691
 692         if (len > 0)
 693                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 694         else
 695                 mapbuf = NULL;
 696
 697         for (i = 0; i < sum.count; i++) {
 698                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 699                 char *map = map_ptr(mapbuf, offset, n1);
 700                 char sum2[SUM_LENGTH];
 701                 uint32 sum1;
 702
 703                 len -= n1;
 704                 offset += n1;
 705
 706                 if (f_copy >= 0) {
 707                         full_write(f_copy, map, n1);
 708                         if (append_mode > 0)
 709                                 continue;
 710                 }
 711
 712                 sum1 = get_checksum1(map, n1);
 713                 get_checksum2(map, n1, sum2);
 714
 715                 if (verbose > 3) {
 716                         rprintf(FINFO,
 717                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 718                                 (double)i, (double)offset - n1, (long)n1,
 719                                 (unsigned long)sum1);
 720                 }
 721                 write_int(f_out, sum1);
 722                 write_buf(f_out, sum2, sum.s2length);
 723         }
 724
 725         if (mapbuf)
 726                 unmap_file(mapbuf);
 727 }
 728
 729
 730 /* Try to find a filename in the same dir as "fname" with a similar name. */
 731 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 732 {
 733         int fname_len, fname_suf_len;
 734         const char *fname_suf, *fname = file->basename;
 735         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 736         int j, lowest_j = -1;
 737
 738         fname_len = strlen(fname);
 739         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 740
 741         for (j = 0; j < dirlist->count; j++) {
 742                 struct file_struct *fp = dirlist->files[j];
 743                 const char *suf, *name;
 744                 int len, suf_len;
 745                 uint32 dist;
 746
 747                 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
 748                  || fp->flags & FLAG_FILE_SENT)
 749                         continue;
 750
 751                 name = fp->basename;
 752
 753                 if (F_LENGTH(fp) == F_LENGTH(file)
 754                     && cmp_time(fp->modtime, file->modtime) == 0) {
 755                         if (verbose > 4) {
 756                                 rprintf(FINFO,
 757                                         "fuzzy size/modtime match for %s\n",
 758                                         name);
 759                         }
 760                         return j;
 761                 }
 762
 763                 len = strlen(name);
 764                 suf = find_filename_suffix(name, len, &suf_len);
 765
 766                 dist = fuzzy_distance(name, len, fname, fname_len);
 767                 /* Add some extra weight to how well the suffixes match. */
 768                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 769                       * 10;
 770                 if (verbose > 4) {
 771                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 772                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 773                 }
 774                 if (dist <= lowest_dist) {
 775                         lowest_dist = dist;
 776                         lowest_j = j;
 777                 }
 778         }
 779
 780         return lowest_j;
 781 }
 782
 783 /* This is only called for regular files.  We return -2 if we've finished
 784  * handling the file, -1 if no dest-linking occurred, or a non-negative
 785  * value if we found an alternate basis file. */
 786 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 787                          char *cmpbuf, STRUCT_STAT *stp, int itemizing,
 788                          enum logcode code)
 789 {
 790         int best_match = -1;
 791         int match_level = 0;
 792         int j = 0;
 793
 794         do {
 795                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 796                 if (link_stat(cmpbuf, stp, 0) < 0 || !S_ISREG(stp->st_mode))
 797                         continue;
 798                 switch (match_level) {
 799                 case 0:
 800                         best_match = j;
 801                         match_level = 1;
 802                         /* FALL THROUGH */
 803                 case 1:
 804                         if (!unchanged_file(cmpbuf, file, stp))
 805                                 continue;
 806                         best_match = j;
 807                         match_level = 2;
 808                         /* FALL THROUGH */
 809                 case 2:
 810                         if (!unchanged_attrs(file, stp))
 811                                 continue;
 812                         if (always_checksum > 0 && preserve_times
 813                          && cmp_time(stp->st_mtime, file->modtime))
 814                                 continue;
 815                         best_match = j;
 816                         match_level = 3;
 817                         break;
 818                 }
 819                 break;
 820         } while (basis_dir[++j] != NULL);
 821
 822         if (!match_level)
 823                 return -1;
 824
 825         if (j != best_match) {
 826                 j = best_match;
 827                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 828                 if (link_stat(cmpbuf, stp, 0) < 0)
 829                         return -1;
 830         }
 831
 832         if (match_level == 3 && !copy_dest) {
 833 #ifdef SUPPORT_HARD_LINKS
 834                 if (link_dest) {
 835                         if (!hard_link_one(file, fname, cmpbuf, 1))
 836                                 goto try_a_copy;
 837                         if (preserve_hard_links && F_IS_HLINKED(file))
 838                                 finish_hard_link(file, fname, stp, itemizing, code, j);
 839                         if (itemizing && (verbose > 1 || stdout_format_has_i > 1)) {
 840                                 itemize(file, ndx, 1, stp,
 841                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 842                                         0, "");
 843                         }
 844                 } else
 845 #endif
 846                 if (itemizing)
 847                         itemize(file, ndx, 0, stp, 0, 0, NULL);
 848                 if (verbose > 1 && maybe_ATTRS_REPORT)
 849                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 850                 return -2;
 851         }
 852
 853         if (match_level >= 2) {
 854 #ifdef SUPPORT_HARD_LINKS
 855           try_a_copy: /* Copy the file locally. */
 856 #endif
 857                 if (copy_file(cmpbuf, fname, file->mode) < 0) {
 858                         if (verbose) {
 859                                 rsyserr(FINFO, errno, "copy_file %s => %s",
 860                                         full_fname(cmpbuf), fname);
 861                         }
 862                         return -1;
 863                 }
 864                 if (itemizing)
 865                         itemize(file, ndx, 0, stp, ITEM_LOCAL_CHANGE, 0, NULL);
 866                 set_file_attrs(fname, file, NULL, 0);
 867                 if (maybe_ATTRS_REPORT
 868                  && ((!itemizing && verbose && match_level == 2)
 869                   || (verbose > 1 && match_level == 3))) {
 870                         code = match_level == 3 ? FCLIENT : FINFO;
 871                         rprintf(code, "%s%s\n", fname,
 872                                 match_level == 3 ? " is uptodate" : "");
 873                 }
 874 #ifdef SUPPORT_HARD_LINKS
 875                 if (preserve_hard_links && F_IS_HLINKED(file))
 876                         finish_hard_link(file, fname, stp, itemizing, code, -1);
 877 #endif
 878                 return -2;
 879         }
 880
 881         return FNAMECMP_BASIS_DIR_LOW + j;
 882 }
 883
 884 /* This is only called for non-regular files.  We return -2 if we've finished
 885  * handling the file, or -1 if no dest-linking occurred, or a non-negative
 886  * value if we found an alternate basis file. */
 887 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 888                          char *cmpbuf, STRUCT_STAT *stp, int itemizing,
 889                          enum logcode code)
 890 {
 891         char lnk[MAXPATHLEN];
 892         int best_match = -1;
 893         int match_level = 0;
 894         enum nonregtype type;
 895         uint32 *devp;
 896         int len, j = 0;
 897
 898 #ifndef SUPPORT_LINKS
 899         if (S_ISLNK(file->mode))
 900                 return -1;
 901 #endif
 902         if (S_ISDIR(file->mode)) {
 903                 type = TYPE_DIR;
 904         } else if (IS_SPECIAL(file->mode))
 905                 type = TYPE_SPECIAL;
 906         else if (IS_DEVICE(file->mode))
 907                 type = TYPE_DEVICE;
 908 #ifdef SUPPORT_LINKS
 909         else if (S_ISLNK(file->mode))
 910                 type = TYPE_SYMLINK;
 911 #endif
 912         else {
 913                 rprintf(FERROR,
 914                         "internal: try_dests_non() called with invalid mode (%o)\n",
 915                         (int)file->mode);
 916                 exit_cleanup(RERR_UNSUPPORTED);
 917         }
 918
 919         do {
 920                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 921                 if (link_stat(cmpbuf, stp, 0) < 0)
 922                         continue;
 923                 switch (type) {
 924                 case TYPE_DIR:
 925                         if (!S_ISDIR(stp->st_mode))
 926                                 continue;
 927                         break;
 928                 case TYPE_SPECIAL:
 929                         if (!IS_SPECIAL(stp->st_mode))
 930                                 continue;
 931                         break;
 932                 case TYPE_DEVICE:
 933                         if (!IS_DEVICE(stp->st_mode))
 934                                 continue;
 935                         break;
 936 #ifdef SUPPORT_LINKS
 937                 case TYPE_SYMLINK:
 938                         if (!S_ISLNK(stp->st_mode))
 939                                 continue;
 940                         break;
 941 #endif
 942                 }
 943                 if (match_level < 1) {
 944                         match_level = 1;
 945                         best_match = j;
 946                 }
 947                 switch (type) {
 948                 case TYPE_DIR:
 949                         break;
 950                 case TYPE_SPECIAL:
 951                 case TYPE_DEVICE:
 952                         devp = F_RDEV_P(file);
 953                         if (stp->st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
 954                                 continue;
 955                         break;
 956 #ifdef SUPPORT_LINKS
 957                 case TYPE_SYMLINK:
 958                         if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
 959                                 continue;
 960                         lnk[len] = '\0';
 961                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
 962                                 continue;
 963                         break;
 964 #endif
 965                 }
 966                 if (match_level < 2) {
 967                         match_level = 2;
 968                         best_match = j;
 969                 }
 970                 if (unchanged_attrs(file, stp)) {
 971                         match_level = 3;
 972                         best_match = j;
 973                         break;
 974                 }
 975         } while (basis_dir[++j] != NULL);
 976
 977         if (!match_level)
 978                 return -1;
 979
 980         if (j != best_match) {
 981                 j = best_match;
 982                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 983                 if (link_stat(cmpbuf, stp, 0) < 0)
 984                         return -1;
 985         }
 986
 987         if (match_level == 3) {
 988 #ifdef SUPPORT_HARD_LINKS
 989                 if (link_dest
 990 #ifndef CAN_HARDLINK_SYMLINK
 991                  && !S_ISLNK(file->mode)
 992 #endif
 993 #ifndef CAN_HARDLINK_SPECIAL
 994                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
 995 #endif
 996                  && !S_ISDIR(file->mode)) {
 997                         if (do_link(cmpbuf, fname) < 0) {
 998                                 rsyserr(FERROR, errno,
 999                                         "failed to hard-link %s with %s",
1000                                         cmpbuf, fname);
1001                                 return j;
1002                         }
1003                         if (preserve_hard_links && F_IS_HLINKED(file))
1004                                 finish_hard_link(file, fname, NULL, itemizing, code, -1);
1005                 } else
1006 #endif
1007                         match_level = 2;
1008                 if (itemizing && stdout_format_has_i
1009                  && (verbose > 1 || stdout_format_has_i > 1)) {
1010                         int chg = compare_dest && type != TYPE_DIR ? 0
1011                             : ITEM_LOCAL_CHANGE
1012                              + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1013                         char *lp = match_level == 3 ? "" : NULL;
1014                         itemize(file, ndx, 0, stp, chg + ITEM_MATCHED, 0, lp);
1015                 }
1016                 if (verbose > 1 && maybe_ATTRS_REPORT) {
1017                         rprintf(FCLIENT, "%s%s is uptodate\n",
1018                                 fname, type == TYPE_DIR ? "/" : "");
1019                 }
1020                 return -2;
1021         }
1022
1023         return j;
1024 }
1025
1026 static int phase = 0;
1027
1028 /* Acts on cur_flist->file's ndx'th item, whose name is fname.  If a dir,
1029  * make sure it exists, and has the right permissions/timestamp info.  For
1030  * all other non-regular files (symlinks, etc.) we create them here.  For
1031  * regular files that have changed, we try to find a basis file and then
1032  * start sending checksums.
1033  *
1034  * When fname is non-null, it must point to a MAXPATHLEN buffer!
1035  *
1036  * Note that f_out is set to -1 when doing final directory-permission and
1037  * modification-time repair. */
1038 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1039                            int itemizing, enum logcode code, int f_out)
1040 {
1041         static int missing_below = -1, excluded_below = -1;
1042         static const char *parent_dirname = "";
1043         static struct file_list *fuzzy_dirlist = NULL;
1044         static int need_fuzzy_dirlist = 0;
1045         struct file_struct *fuzzy_file = NULL;
1046         int fd = -1, f_copy = -1;
1047         STRUCT_STAT st, real_st, partial_st;
1048         struct file_struct *back_file = NULL;
1049         int statret, real_ret, stat_errno;
1050         char *fnamecmp, *partialptr, *backupptr = NULL;
1051         char fnamecmpbuf[MAXPATHLEN];
1052         uchar fnamecmp_type;
1053         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1054
1055         if (list_only)
1056                 return;
1057
1058         if (verbose > 2)
1059                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1060
1061         if (server_filter_list.head) {
1062                 if (excluded_below >= 0) {
1063                         if (F_DEPTH(file) > excluded_below)
1064                                 goto skipping;
1065                         excluded_below = -1;
1066                 }
1067                 if (check_filter(&server_filter_list, fname,
1068                                  S_ISDIR(file->mode)) < 0) {
1069                         if (S_ISDIR(file->mode))
1070                                 excluded_below = F_DEPTH(file);
1071                   skipping:
1072                         if (verbose) {
1073                                 rprintf(FINFO,
1074                                         "skipping server-excluded file \"%s\"\n",
1075                                         fname);
1076                         }
1077                         return;
1078                 }
1079         }
1080
1081         if (missing_below >= 0) {
1082                 if (F_DEPTH(file) <= missing_below) {
1083                         if (dry_run)
1084                                 dry_run--;
1085                         missing_below = -1;
1086                 } else if (!dry_run) {
1087                         if (S_ISDIR(file->mode))
1088                                 file->flags |= FLAG_MISSING_DIR;
1089                         return;
1090                 }
1091         }
1092         if (dry_run > 1) {
1093                 if (fuzzy_dirlist) {
1094                         flist_free(fuzzy_dirlist);
1095                         fuzzy_dirlist = NULL;
1096                 }
1097                 parent_dirname = "";
1098                 statret = -1;
1099                 stat_errno = ENOENT;
1100         } else {
1101                 const char *dn = file->dirname ? file->dirname : ".";
1102                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1103                         if (relative_paths && !implied_dirs
1104                          && do_stat(dn, &st) < 0
1105                          && create_directory_path(fname) < 0) {
1106                                 rsyserr(FERROR, errno,
1107                                         "recv_generator: mkdir %s failed",
1108                                         full_fname(dn));
1109                         }
1110                         if (fuzzy_dirlist) {
1111                                 flist_free(fuzzy_dirlist);
1112                                 fuzzy_dirlist = NULL;
1113                         }
1114                         if (fuzzy_basis)
1115                                 need_fuzzy_dirlist = 1;
1116                 }
1117                 parent_dirname = dn;
1118
1119                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1120                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1121                         fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1122                         need_fuzzy_dirlist = 0;
1123                 }
1124
1125                 statret = link_stat(fname, &st,
1126                                     keep_dirlinks && S_ISDIR(file->mode));
1127                 stat_errno = errno;
1128         }
1129
1130         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1131                 if (verbose > 1) {
1132                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1133                                 S_ISDIR(file->mode) ? "directory" : "file",
1134                                 fname);
1135                 }
1136                 if (S_ISDIR(file->mode)) {
1137                         if (missing_below < 0) {
1138                                 if (dry_run)
1139                                         dry_run++;
1140                                 missing_below = F_DEPTH(file);
1141                         }
1142                         file->flags |= FLAG_MISSING_DIR;
1143                 }
1144                 return;
1145         }
1146
1147         /* If we're not preserving permissions, change the file-list's
1148          * mode based on the local permissions and some heuristics. */
1149         if (!preserve_perms) {
1150                 int exists = statret == 0
1151                           && S_ISDIR(st.st_mode) == S_ISDIR(file->mode);
1152                 file->mode = dest_mode(file->mode, st.st_mode, exists);
1153         }
1154
1155         if (S_ISDIR(file->mode)) {
1156                 /* The file to be received is a directory, so we need
1157                  * to prepare appropriately.  If there is already a
1158                  * file of that name and it is *not* a directory, then
1159                  * we need to delete it.  If it doesn't exist, then
1160                  * (perhaps recursively) create it. */
1161                 if (statret == 0 && !S_ISDIR(st.st_mode)) {
1162                         if (delete_item(fname, st.st_mode, "directory", del_opts) != 0)
1163                                 return;
1164                         statret = -1;
1165                 }
1166                 if (dry_run && statret != 0 && missing_below < 0) {
1167                         missing_below = F_DEPTH(file);
1168                         dry_run++;
1169                 }
1170                 real_ret = statret;
1171                 real_st = st;
1172                 if (new_root_dir) {
1173                         if (*fname == '.' && fname[1] == '\0')
1174                                 statret = -1;
1175                         new_root_dir = 0;
1176                 }
1177                 if (statret != 0 && basis_dir[0] != NULL) {
1178                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &st,
1179                                               itemizing, code);
1180                         if (j == -2) {
1181                                 itemizing = 0;
1182                                 code = FNONE;
1183                         } else if (j >= 0)
1184                                 statret = 1;
1185                 }
1186                 if (itemizing && f_out != -1) {
1187                         itemize(file, ndx, statret, &st,
1188                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1189                 }
1190                 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1191                         if (!relative_paths || errno != ENOENT
1192                             || create_directory_path(fname) < 0
1193                             || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1194                                 rsyserr(FERROR, errno,
1195                                         "recv_generator: mkdir %s failed",
1196                                         full_fname(fname));
1197                                 rprintf(FERROR,
1198                                     "*** Skipping any contents from this failed directory ***\n");
1199                                 missing_below = F_DEPTH(file);
1200                                 file->flags |= FLAG_MISSING_DIR;
1201                                 return;
1202                         }
1203                 }
1204                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_st, 0)
1205                     && verbose && code != FNONE && f_out != -1)
1206                         rprintf(code, "%s/\n", fname);
1207                 if (real_ret != 0 && one_file_system)
1208                         real_st.st_dev = filesystem_dev;
1209                 if (inc_recurse) {
1210                         if (one_file_system) {
1211                                 uint32 *devp = F_DIRDEV_P(file);
1212                                 DEV_MAJOR(devp) = major(real_st.st_dev);
1213                                 DEV_MINOR(devp) = minor(real_st.st_dev);
1214                         }
1215                 }
1216                 else if (delete_during && f_out != -1 && !phase && dry_run < 2
1217                     && (file->flags & FLAG_XFER_DIR))
1218                         delete_in_dir(cur_flist, fname, file, &real_st.st_dev);
1219                 return;
1220         }
1221
1222 #ifdef SUPPORT_HARD_LINKS
1223         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1224          && hard_link_check(file, ndx, fname, statret, &st, itemizing, code))
1225                 return;
1226 #endif
1227
1228         if (preserve_links && S_ISLNK(file->mode)) {
1229 #ifdef SUPPORT_LINKS
1230                 const char *sl = F_SYMLINK(file);
1231                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1232                         if (verbose) {
1233                                 if (solo_file)
1234                                         fname = f_name(file, NULL);
1235                                 rprintf(FINFO,
1236                                         "ignoring unsafe symlink %s -> \"%s\"\n",
1237                                         full_fname(fname), sl);
1238                         }
1239                         return;
1240                 }
1241                 if (statret == 0) {
1242                         char lnk[MAXPATHLEN];
1243                         int len;
1244
1245                         if (!S_ISLNK(st.st_mode))
1246                                 statret = -1;
1247                         else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1248                               && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1249                                 /* The link is pointing to the right place. */
1250                                 if (itemizing)
1251                                         itemize(file, ndx, 0, &st, 0, 0, NULL);
1252                                 set_file_attrs(fname, file, &st, maybe_ATTRS_REPORT);
1253 #ifdef SUPPORT_HARD_LINKS
1254                                 if (preserve_hard_links && F_IS_HLINKED(file))
1255                                         finish_hard_link(file, fname, &st, itemizing, code, -1);
1256 #endif
1257                                 if (remove_source_files == 1)
1258                                         goto return_with_success;
1259                                 return;
1260                         }
1261                         /* Not the right symlink (or not a symlink), so
1262                          * delete it. */
1263                         if (delete_item(fname, st.st_mode, "symlink", del_opts) != 0)
1264                                 return;
1265                 } else if (basis_dir[0] != NULL) {
1266                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &st,
1267                                               itemizing, code);
1268                         if (j == -2) {
1269 #ifndef CAN_HARDLINK_SYMLINK
1270                                 if (link_dest) {
1271                                         /* Resort to --copy-dest behavior. */
1272                                 } else
1273 #endif
1274                                 if (!copy_dest)
1275                                         return;
1276                                 itemizing = 0;
1277                                 code = FNONE;
1278                         } else if (j >= 0)
1279                                 statret = 1;
1280                 }
1281 #ifdef SUPPORT_HARD_LINKS
1282                 if (preserve_hard_links && F_HLINK_NOT_LAST(file))
1283                         return;
1284 #endif
1285                 if (do_symlink(sl, fname) != 0) {
1286                         rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
1287                                 full_fname(fname), sl);
1288                 } else {
1289                         set_file_attrs(fname, file, NULL, 0);
1290                         if (itemizing) {
1291                                 itemize(file, ndx, statret, &st,
1292                                         ITEM_LOCAL_CHANGE, 0, NULL);
1293                         }
1294                         if (code != FNONE && verbose)
1295                                 rprintf(code, "%s -> %s\n", fname, sl);
1296 #ifdef SUPPORT_HARD_LINKS
1297                         if (preserve_hard_links && F_IS_HLINKED(file))
1298                                 finish_hard_link(file, fname, NULL, itemizing, code, -1);
1299 #endif
1300                         /* This does not check remove_source_files == 1
1301                          * because this is one of the items that the old
1302                          * --remove-sent-files option would remove. */
1303                         if (remove_source_files)
1304                                 goto return_with_success;
1305                 }
1306 #endif
1307                 return;
1308         }
1309
1310         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1311          || (preserve_specials && IS_SPECIAL(file->mode))) {
1312                 uint32 *devp = F_RDEV_P(file);
1313                 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1314                 if (statret == 0) {
1315                         char *t;
1316                         if (IS_DEVICE(file->mode)) {
1317                                 if (!IS_DEVICE(st.st_mode))
1318                                         statret = -1;
1319                                 t = "device file";
1320                         } else {
1321                                 if (!IS_SPECIAL(st.st_mode))
1322                                         statret = -1;
1323                                 t = "special file";
1324                         }
1325                         if (statret == 0
1326                          && BITS_EQUAL(st.st_mode, file->mode, _S_IFMT)
1327                          && st.st_rdev == rdev) {
1328                                 /* The device or special file is identical. */
1329                                 if (itemizing)
1330                                         itemize(file, ndx, 0, &st, 0, 0, NULL);
1331                                 set_file_attrs(fname, file, &st, maybe_ATTRS_REPORT);
1332 #ifdef SUPPORT_HARD_LINKS
1333                                 if (preserve_hard_links && F_IS_HLINKED(file))
1334                                         finish_hard_link(file, fname, &st, itemizing, code, -1);
1335 #endif
1336                                 if (remove_source_files == 1)
1337                                         goto return_with_success;
1338                                 return;
1339                         }
1340                         if (delete_item(fname, st.st_mode, t, del_opts) != 0)
1341                                 return;
1342                 } else if (basis_dir[0] != NULL) {
1343                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &st,
1344                                               itemizing, code);
1345                         if (j == -2) {
1346 #ifndef CAN_HARDLINK_SPECIAL
1347                                 if (link_dest) {
1348                                         /* Resort to --copy-dest behavior. */
1349                                 } else
1350 #endif
1351                                 if (!copy_dest)
1352                                         return;
1353                                 itemizing = 0;
1354                                 code = FNONE;
1355                         } else if (j >= 0)
1356                                 statret = 1;
1357                 }
1358 #ifdef SUPPORT_HARD_LINKS
1359                 if (preserve_hard_links && F_HLINK_NOT_LAST(file))
1360                         return;
1361 #endif
1362                 if (verbose > 2) {
1363                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1364                                 fname, (int)file->mode,
1365                                 (long)major(rdev), (long)minor(rdev));
1366                 }
1367                 if (do_mknod(fname, file->mode, rdev) < 0) {
1368                         rsyserr(FERROR, errno, "mknod %s failed",
1369                                 full_fname(fname));
1370                 } else {
1371                         set_file_attrs(fname, file, NULL, 0);
1372                         if (itemizing) {
1373                                 itemize(file, ndx, statret, &st,
1374                                         ITEM_LOCAL_CHANGE, 0, NULL);
1375                         }
1376                         if (code != FNONE && verbose)
1377                                 rprintf(code, "%s\n", fname);
1378 #ifdef SUPPORT_HARD_LINKS
1379                         if (preserve_hard_links && F_IS_HLINKED(file))
1380                                 finish_hard_link(file, fname, NULL, itemizing, code, -1);
1381 #endif
1382                         if (remove_source_files == 1)
1383                                 goto return_with_success;
1384                 }
1385                 return;
1386         }
1387
1388         if (!S_ISREG(file->mode)) {
1389                 if (solo_file)
1390                         fname = f_name(file, NULL);
1391                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1392                 return;
1393         }
1394
1395         if (max_size > 0 && F_LENGTH(file) > max_size) {
1396                 if (verbose > 1) {
1397                         if (solo_file)
1398                                 fname = f_name(file, NULL);
1399                         rprintf(FINFO, "%s is over max-size\n", fname);
1400                 }
1401                 return;
1402         }
1403         if (min_size > 0 && F_LENGTH(file) < min_size) {
1404                 if (verbose > 1) {
1405                         if (solo_file)
1406                                 fname = f_name(file, NULL);
1407                         rprintf(FINFO, "%s is under min-size\n", fname);
1408                 }
1409                 return;
1410         }
1411
1412         if (ignore_existing > 0 && statret == 0) {
1413                 if (verbose > 1)
1414                         rprintf(FINFO, "%s exists\n", fname);
1415                 return;
1416         }
1417
1418         if (update_only > 0 && statret == 0
1419             && cmp_time(st.st_mtime, file->modtime) > 0) {
1420                 if (verbose > 1)
1421                         rprintf(FINFO, "%s is newer\n", fname);
1422                 return;
1423         }
1424
1425         fnamecmp = fname;
1426         fnamecmp_type = FNAMECMP_FNAME;
1427
1428         if (statret == 0 && !S_ISREG(st.st_mode)) {
1429                 if (delete_item(fname, st.st_mode, "regular file", del_opts) != 0)
1430                         return;
1431                 statret = -1;
1432                 stat_errno = ENOENT;
1433         }
1434
1435         if (statret != 0 && basis_dir[0] != NULL) {
1436                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &st,
1437                                       itemizing, code);
1438                 if (j == -2) {
1439                         if (remove_source_files == 1)
1440                                 goto return_with_success;
1441                         return;
1442                 }
1443                 if (j >= 0) {
1444                         fnamecmp = fnamecmpbuf;
1445                         fnamecmp_type = j;
1446                         statret = 0;
1447                 }
1448         }
1449
1450         real_ret = statret;
1451         real_st = st;
1452
1453         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1454             && link_stat(partialptr, &partial_st, 0) == 0
1455             && S_ISREG(partial_st.st_mode)) {
1456                 if (statret != 0)
1457                         goto prepare_to_open;
1458         } else
1459                 partialptr = NULL;
1460
1461         if (statret != 0 && fuzzy_dirlist && dry_run <= 1) {
1462                 int j = find_fuzzy(file, fuzzy_dirlist);
1463                 if (j >= 0) {
1464                         fuzzy_file = fuzzy_dirlist->files[j];
1465                         f_name(fuzzy_file, fnamecmpbuf);
1466                         if (verbose > 2) {
1467                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1468                                         fname, fnamecmpbuf);
1469                         }
1470                         st.st_size = F_LENGTH(fuzzy_file);
1471                         statret = 0;
1472                         fnamecmp = fnamecmpbuf;
1473                         fnamecmp_type = FNAMECMP_FUZZY;
1474                 }
1475         }
1476
1477         if (statret != 0) {
1478 #ifdef SUPPORT_HARD_LINKS
1479                 if (preserve_hard_links && F_HLINK_NOT_LAST(file))
1480                         return;
1481 #endif
1482                 if (stat_errno == ENOENT)
1483                         goto notify_others;
1484                 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1485                         full_fname(fname));
1486                 return;
1487         }
1488
1489         if (append_mode > 0 && st.st_size > F_LENGTH(file))
1490                 return;
1491
1492         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1493                 ;
1494         else if (fnamecmp_type == FNAMECMP_FUZZY)
1495                 ;
1496         else if (unchanged_file(fnamecmp, file, &st)) {
1497                 if (partialptr) {
1498                         do_unlink(partialptr);
1499                         handle_partial_dir(partialptr, PDIR_DELETE);
1500                 }
1501                 if (itemizing)
1502                         itemize(file, ndx, statret, &st, 0, 0, NULL);
1503                 set_file_attrs(fname, file, &st, maybe_ATTRS_REPORT);
1504 #ifdef SUPPORT_HARD_LINKS
1505                 if (preserve_hard_links && F_IS_HLINKED(file))
1506                         finish_hard_link(file, fname, &st, itemizing, code, -1);
1507 #endif
1508                 if (remove_source_files != 1)
1509                         return;
1510           return_with_success:
1511                 if (!dry_run)
1512                         send_msg_int(MSG_SUCCESS, ndx + cur_flist->ndx_start);
1513                 return;
1514         }
1515
1516   prepare_to_open:
1517         if (partialptr) {
1518                 st = partial_st;
1519                 fnamecmp = partialptr;
1520                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1521                 statret = 0;
1522         }
1523
1524         if (!do_xfers || read_batch || whole_file)
1525                 goto notify_others;
1526
1527         if (fuzzy_dirlist) {
1528                 int j = flist_find(fuzzy_dirlist, file);
1529                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1530                         fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1531         }
1532
1533         /* open the file */
1534         fd = do_open(fnamecmp, O_RDONLY, 0);
1535
1536         if (fd == -1) {
1537                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1538                         full_fname(fnamecmp));
1539           pretend_missing:
1540                 /* pretend the file didn't exist */
1541 #ifdef SUPPORT_HARD_LINKS
1542                 if (preserve_hard_links && F_HLINK_NOT_LAST(file))
1543                         return;
1544 #endif
1545                 statret = real_ret = -1;
1546                 goto notify_others;
1547         }
1548
1549         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1550                 if (!(backupptr = get_backup_name(fname))) {
1551                         close(fd);
1552                         return;
1553                 }
1554                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1555                         close(fd);
1556                         goto pretend_missing;
1557                 }
1558                 if (robust_unlink(backupptr) && errno != ENOENT) {
1559                         rsyserr(FERROR, errno, "unlink %s",
1560                                 full_fname(backupptr));
1561                         unmake_file(back_file);
1562                         close(fd);
1563                         return;
1564                 }
1565                 if ((f_copy = do_open(backupptr,
1566                     O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1567                         rsyserr(FERROR, errno, "open %s",
1568                                 full_fname(backupptr));
1569                         unmake_file(back_file);
1570                         close(fd);
1571                         return;
1572                 }
1573                 fnamecmp_type = FNAMECMP_BACKUP;
1574         }
1575
1576         if (verbose > 3) {
1577                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1578                         fnamecmp, (double)st.st_size);
1579         }
1580
1581         if (verbose > 2)
1582                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1583
1584   notify_others:
1585         if (remove_source_files && !delay_updates && !phase)
1586                 increment_active_files(ndx, itemizing, code);
1587         if (inc_recurse && !dry_run)
1588                 cur_flist->in_progress++;
1589 #ifdef SUPPORT_HARD_LINKS
1590         if (preserve_hard_links && F_IS_HLINKED(file))
1591                 file->flags |= FLAG_FILE_SENT;
1592 #endif
1593         write_ndx(f_out, ndx + cur_flist->ndx_start);
1594         if (itemizing) {
1595                 int iflags = ITEM_TRANSFER;
1596                 if (always_checksum > 0)
1597                         iflags |= ITEM_REPORT_CHECKSUM;
1598                 if (fnamecmp_type != FNAMECMP_FNAME)
1599                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1600                 if (fnamecmp_type == FNAMECMP_FUZZY)
1601                         iflags |= ITEM_XNAME_FOLLOWS;
1602                 itemize(file, -1, real_ret, &real_st, iflags, fnamecmp_type,
1603                         fuzzy_file ? fuzzy_file->basename : NULL);
1604         }
1605
1606         if (!do_xfers) {
1607 #ifdef SUPPORT_HARD_LINKS
1608                 if (preserve_hard_links && F_IS_HLINKED(file))
1609                         finish_hard_link(file, fname, &st, itemizing, code, -1);
1610 #endif
1611                 return;
1612         }
1613         if (read_batch)
1614                 return;
1615
1616         if (statret != 0 || whole_file) {
1617                 write_sum_head(f_out, NULL);
1618                 return;
1619         }
1620
1621         generate_and_send_sums(fd, st.st_size, f_out, f_copy);
1622
1623         if (f_copy >= 0) {
1624                 close(f_copy);
1625                 set_file_attrs(backupptr, back_file, NULL, 0);
1626                 if (verbose > 1) {
1627                         rprintf(FINFO, "backed up %s to %s\n",
1628                                 fname, backupptr);
1629                 }
1630                 unmake_file(back_file);
1631         }
1632
1633         close(fd);
1634 }
1635
1636 static void touch_up_dirs(struct file_list *flist, int ndx)
1637 {
1638         struct file_struct *file;
1639         char *fname;
1640         int i, j, start, end;
1641
1642         if (ndx < 0) {
1643                 start = 0;
1644                 end = flist->count - 1;
1645         } else
1646                 start = end = ndx;
1647
1648         /* Fix any directory permissions that were modified during the
1649          * transfer and/or re-set any tweaked modified-time values. */
1650         for (i = start, j = 0; i <= end; i++) {
1651                 file = flist->files[i];
1652                 if (!F_IS_ACTIVE(file) || !S_ISDIR(file->mode)
1653                  || file->flags & FLAG_MISSING_DIR)
1654                         continue;
1655                 if (!need_retouch_dir_times && file->mode & S_IWUSR)
1656                         continue;
1657                 fname = f_name(file, NULL);
1658                 if (!(file->mode & S_IWUSR))
1659                         do_chmod(fname, file->mode);
1660                 if (need_retouch_dir_times)
1661                         set_modtime(fname, file->modtime, file->mode);
1662                 if (allowed_lull && !(++j % lull_mod))
1663                         maybe_send_keepalive();
1664                 else if (!(j % 200))
1665                         maybe_flush_socket();
1666         }
1667 }
1668
1669 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
1670 {
1671         struct file_struct *file;
1672         struct file_list *flist;
1673         char fbuf[MAXPATHLEN];
1674         int ndx;
1675
1676 #ifdef SUPPORT_HARD_LINKS
1677         while (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
1678                 flist = flist_for_ndx(ndx);
1679                 assert(flist != NULL);
1680                 file = flist->files[ndx];
1681                 assert(file->flags & FLAG_HLINKED);
1682                 finish_hard_link(file, f_name(file, fbuf), NULL, itemizing, code, -1);
1683         }
1684 #endif
1685
1686         while (check_redo && (ndx = get_redo_num()) != -1) {
1687                 csum_length = SUM_LENGTH;
1688                 max_size = -max_size;
1689                 min_size = -min_size;
1690                 ignore_existing = -ignore_existing;
1691                 ignore_non_existing = -ignore_non_existing;
1692                 update_only = -update_only;
1693                 always_checksum = -always_checksum;
1694                 size_only = -size_only;
1695                 append_mode = -append_mode;
1696                 make_backups = -make_backups; /* avoid dup backup w/inplace */
1697                 ignore_times++;
1698
1699                 flist = cur_flist;
1700                 cur_flist = flist_for_ndx(ndx);
1701                 ndx -= cur_flist->ndx_start;
1702
1703                 file = cur_flist->files[ndx];
1704                 if (solo_file)
1705                         strlcpy(fbuf, solo_file, sizeof fbuf);
1706                 else
1707                         f_name(file, fbuf);
1708                 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
1709                 cur_flist->to_redo--;
1710
1711                 cur_flist = flist;
1712
1713                 csum_length = SHORT_SUM_LENGTH;
1714                 max_size = -max_size;
1715                 min_size = -min_size;
1716                 ignore_existing = -ignore_existing;
1717                 ignore_non_existing = -ignore_non_existing;
1718                 update_only = -update_only;
1719                 always_checksum = -always_checksum;
1720                 size_only = -size_only;
1721                 append_mode = -append_mode;
1722                 make_backups = -make_backups;
1723                 ignore_times--;
1724         }
1725
1726         while (cur_flist != first_flist) { /* only possible with inc_recurse */
1727                 if (first_flist->in_progress || first_flist->to_redo)
1728                         break;
1729
1730                 if (!read_batch)
1731                         write_ndx(sock_f_out, NDX_DONE);
1732
1733                 if (delete_during == 2 || !dir_tweaking) {
1734                         /* Skip directory touch-up. */
1735                 } else if (first_flist->ndx_start != 0)
1736                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
1737                 else if (relative_paths && implied_dirs)
1738                         touch_up_dirs(first_flist, -1);
1739
1740                 flist_free(first_flist); /* updates first_flist */
1741         }
1742 }
1743
1744 void generate_files(int f_out, const char *local_name)
1745 {
1746         int i;
1747         char fbuf[MAXPATHLEN];
1748         int itemizing;
1749         enum logcode code;
1750         int need_retouch_dir_perms = 0;
1751         int save_do_progress = do_progress;
1752
1753         if (protocol_version >= 29) {
1754                 itemizing = 1;
1755                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1756                 code = logfile_format_has_i ? FNONE : FLOG;
1757         } else if (am_daemon) {
1758                 itemizing = logfile_format_has_i && do_xfers;
1759                 maybe_ATTRS_REPORT = ATTRS_REPORT;
1760                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1761         } else if (!am_server) {
1762                 itemizing = stdout_format_has_i;
1763                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1764                 code = itemizing ? FNONE : FINFO;
1765         } else {
1766                 itemizing = 0;
1767                 maybe_ATTRS_REPORT = ATTRS_REPORT;
1768                 code = FINFO;
1769         }
1770         solo_file = local_name;
1771         dir_tweaking = !(list_only || solo_file || dry_run);
1772         need_retouch_dir_times = preserve_times && !omit_dir_times;
1773         lull_mod = allowed_lull * 5;
1774
1775         if (verbose > 2)
1776                 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
1777
1778         if (delete_before && !solo_file && cur_flist->count > 0)
1779                 do_delete_pass(cur_flist);
1780         if (delete_during == 2) {
1781                 deldelay_size = BIGPATHBUFLEN * 4;
1782                 deldelay_buf = new_array(char, deldelay_size);
1783                 if (!deldelay_buf)
1784                         out_of_memory("delete-delay");
1785         }
1786         do_progress = 0;
1787
1788         if (append_mode > 0 || whole_file < 0)
1789                 whole_file = 0;
1790         if (verbose >= 2) {
1791                 rprintf(FINFO, "delta-transmission %s\n",
1792                         whole_file
1793                         ? "disabled for local transfer or --whole-file"
1794                         : "enabled");
1795         }
1796
1797         /* Since we often fill up the outgoing socket and then just sit around
1798          * waiting for the other 2 processes to do their thing, we don't want
1799          * to exit on a timeout.  If the data stops flowing, the receiver will
1800          * notice that and let us know via the redo pipe (or its closing). */
1801         ignore_timeout = 1;
1802
1803         do {
1804                 if (inc_recurse && delete_during && cur_flist->ndx_start) {
1805                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
1806                         if (BITS_SETnUNSET(fp->flags, FLAG_XFER_DIR, FLAG_MISSING_DIR)) {
1807                                 dev_t dirdev;
1808                                 if (one_file_system) {
1809                                         uint32 *devp = F_DIRDEV_P(fp);
1810                                         dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1811                                 } else
1812                                         dirdev = MAKEDEV(0, 0);
1813                                 delete_in_dir(cur_flist, f_name(fp, fbuf), fp, &dirdev);
1814                         }
1815                 }
1816                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
1817                         struct file_struct *file = cur_flist->files[i];
1818
1819                         if (!F_IS_ACTIVE(file))
1820                                 continue;
1821
1822                         if (solo_file)
1823                                 strlcpy(fbuf, solo_file, sizeof fbuf);
1824                         else
1825                                 f_name(file, fbuf);
1826                         recv_generator(fbuf, file, i, itemizing, code, f_out);
1827
1828                         /* We need to ensure that any dirs we create have
1829                          * writeable permissions during the time we are putting
1830                          * files within them.  This is then fixed after the
1831                          * transfer is done. */
1832 #ifdef HAVE_CHMOD
1833                         if (!am_root && S_ISDIR(file->mode)
1834                          && !(file->mode & S_IWUSR) && dir_tweaking) {
1835                                 mode_t mode = file->mode | S_IWUSR;
1836                                 const char *fname = solo_file ? solo_file : fbuf;
1837                                 if (do_chmod(fname, mode) < 0) {
1838                                         rsyserr(FERROR, errno,
1839                                             "failed to modify permissions on %s",
1840                                             full_fname(fname));
1841                                 }
1842                                 need_retouch_dir_perms = 1;
1843                         }
1844 #endif
1845
1846                         check_for_finished_files(itemizing, code, 0);
1847
1848                         if (allowed_lull && !(i % lull_mod))
1849                                 maybe_send_keepalive();
1850                         else if (!(i % 200))
1851                                 maybe_flush_socket();
1852                 }
1853
1854                 if (!inc_recurse) {
1855                         write_ndx(f_out, NDX_DONE);
1856                         break;
1857                 }
1858
1859                 while (!cur_flist->next && !flist_eof) {
1860                         check_for_finished_files(itemizing, code, 1);
1861                         wait_for_receiver();
1862                 }
1863         } while ((cur_flist = cur_flist->next) != NULL);
1864
1865         if (delete_during)
1866                 delete_in_dir(NULL, NULL, NULL, &dev_zero);
1867         phase++;
1868         if (verbose > 2)
1869                 rprintf(FINFO, "generate_files phase=%d\n", phase);
1870
1871         while (!msgdone_cnt) {
1872                 check_for_finished_files(itemizing, code, 1);
1873                 wait_for_receiver();
1874         }
1875
1876         phase++;
1877         if (verbose > 2)
1878                 rprintf(FINFO, "generate_files phase=%d\n", phase);
1879
1880         write_ndx(f_out, NDX_DONE);
1881         /* Reduce round-trip lag-time for a useless delay-updates phase. */
1882         if (protocol_version >= 29 && !delay_updates)
1883                 write_ndx(f_out, NDX_DONE);
1884
1885         /* Read MSG_DONE for the redo phase (and any prior messages). */
1886         while (msgdone_cnt <= 1) {
1887                 check_for_finished_files(itemizing, code, 0);
1888                 wait_for_receiver();
1889         }
1890
1891         if (protocol_version >= 29) {
1892                 phase++;
1893                 if (verbose > 2)
1894                         rprintf(FINFO, "generate_files phase=%d\n", phase);
1895                 if (delay_updates)
1896                         write_ndx(f_out, NDX_DONE);
1897                 /* Read MSG_DONE for delay-updates phase & prior messages. */
1898                 while (msgdone_cnt == 2)
1899                         wait_for_receiver();
1900         }
1901
1902         do_progress = save_do_progress;
1903         if (delete_during == 2)
1904                 do_delayed_deletions(fbuf);
1905         if (delete_after && !solo_file && file_total > 0)
1906                 do_delete_pass(cur_flist);
1907
1908         if ((need_retouch_dir_perms || need_retouch_dir_times)
1909          && dir_tweaking && (!inc_recurse || delete_during == 2))
1910                 touch_up_dirs(inc_recurse ? dir_flist : cur_flist, -1);
1911
1912         if (max_delete >= 0 && deletion_count > max_delete) {
1913                 rprintf(FINFO,
1914                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
1915                         deletion_count - max_delete);
1916                 io_error |= IOERR_DEL_LIMIT;
1917         }
1918
1919         if (verbose > 2)
1920                 rprintf(FINFO, "generate_files finished\n");
1921 }