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) 2003-2014 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 3 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, visit the http://fsf.org website.
  21  */
  22
  23 #include "rsync.h"
  24 #include "inums.h"
  25 #include "ifuncs.h"
  26
  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 relative_paths;
  36 extern int implied_dirs;
  37 extern int keep_dirlinks;
  38 extern int preserve_acls;
  39 extern int preserve_xattrs;
  40 extern int preserve_links;
  41 extern int preserve_devices;
  42 extern int preserve_specials;
  43 extern int preserve_hard_links;
  44 extern int preserve_executability;
  45 extern int preserve_perms;
  46 extern int preserve_times;
  47 extern int delete_mode;
  48 extern int delete_before;
  49 extern int delete_during;
  50 extern int delete_after;
  51 extern int missing_args;
  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 human_readable;
  58 extern int ignore_existing;
  59 extern int ignore_non_existing;
  60 extern int want_xattr_optim;
  61 extern int inplace;
  62 extern int append_mode;
  63 extern int make_backups;
  64 extern int csum_length;
  65 extern int ignore_times;
  66 extern int size_only;
  67 extern OFF_T max_size;
  68 extern OFF_T min_size;
  69 extern int io_error;
  70 extern int flist_eof;
  71 extern int allowed_lull;
  72 extern int sock_f_out;
  73 extern int protocol_version;
  74 extern int file_total;
  75 extern int fuzzy_basis;
  76 extern int always_checksum;
  77 extern int checksum_len;
  78 extern char *partial_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 read_batch;
  85 extern int write_batch;
  86 extern int safe_symlinks;
  87 extern long block_size; /* "long" because popt can't set an int32. */
  88 extern int unsort_ndx;
  89 extern int max_delete;
  90 extern int force_delete;
  91 extern int one_file_system;
  92 extern int skipped_deletes;
  93 extern dev_t filesystem_dev;
  94 extern mode_t orig_umask;
  95 extern uid_t our_uid;
  96 extern char *tmpdir;
  97 extern char *basis_dir[MAX_BASIS_DIRS+1];
  98 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  99 extern filter_rule_list filter_list, daemon_filter_list;
 100
 101 int maybe_ATTRS_REPORT = 0;
 102
 103 static dev_t dev_zero;
 104 static int deldelay_size = 0, deldelay_cnt = 0;
 105 static char *deldelay_buf = NULL;
 106 static int deldelay_fd = -1;
 107 static int loopchk_limit;
 108 static int dir_tweaking;
 109 static int symlink_timeset_failed_flags;
 110 static int need_retouch_dir_times;
 111 static int need_retouch_dir_perms;
 112 static const char *solo_file = NULL;
 113
 114 enum nonregtype {
 115     TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
 116 };
 117
 118 /* Forward declarations. */
 119 #ifdef SUPPORT_HARD_LINKS
 120 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
 121                                  enum logcode code, int f_out);
 122 #endif
 123
 124 #define EARLY_DELAY_DONE_MSG() (!delay_updates)
 125 #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
 126
 127 static int start_delete_delay_temp(void)
 128 {
 129         char fnametmp[MAXPATHLEN];
 130         int save_dry_run = dry_run;
 131
 132         dry_run = 0;
 133         if (!get_tmpname(fnametmp, "deldelay", False)
 134          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 135                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 136                         inc_recurse ? "" : " -- switching to --delete-after");
 137                 delete_during = 0;
 138                 delete_after = !inc_recurse;
 139                 dry_run = save_dry_run;
 140                 return 0;
 141         }
 142         unlink(fnametmp);
 143         dry_run = save_dry_run;
 144         return 1;
 145 }
 146
 147 static int flush_delete_delay(void)
 148 {
 149         if (deldelay_fd < 0 && !start_delete_delay_temp())
 150                 return 0;
 151         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 152                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 153                 delete_during = 0;
 154                 delete_after = !inc_recurse;
 155                 close(deldelay_fd);
 156                 return 0;
 157         }
 158         deldelay_cnt = 0;
 159         return 1;
 160 }
 161
 162 static int remember_delete(struct file_struct *file, const char *fname, int flags)
 163 {
 164         int len;
 165
 166         if (deldelay_cnt == deldelay_size && !flush_delete_delay())
 167                 return 0;
 168
 169         if (flags & DEL_NO_UID_WRITE)
 170                 deldelay_buf[deldelay_cnt++] = '!';
 171
 172         while (1) {
 173                 len = snprintf(deldelay_buf + deldelay_cnt,
 174                                deldelay_size - deldelay_cnt,
 175                                "%x %s%c",
 176                                (int)file->mode, fname, '\0');
 177                 if ((deldelay_cnt += len) <= deldelay_size)
 178                         break;
 179                 deldelay_cnt -= len;
 180                 if (!flush_delete_delay())
 181                         return 0;
 182         }
 183
 184         return 1;
 185 }
 186
 187 static int read_delay_line(char *buf, int *flags_p)
 188 {
 189         static int read_pos = 0;
 190         int j, len, mode;
 191         char *bp, *past_space;
 192
 193         while (1) {
 194                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 195                 if (j < deldelay_cnt)
 196                         break;
 197                 if (deldelay_fd < 0) {
 198                         if (j > read_pos)
 199                                 goto invalid_data;
 200                         return -1;
 201                 }
 202                 deldelay_cnt -= read_pos;
 203                 if (deldelay_cnt == deldelay_size)
 204                         goto invalid_data;
 205                 if (deldelay_cnt && read_pos) {
 206                         memmove(deldelay_buf, deldelay_buf + read_pos,
 207                                 deldelay_cnt);
 208                 }
 209                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 210                            deldelay_size - deldelay_cnt);
 211                 if (len == 0) {
 212                         if (deldelay_cnt) {
 213                                 rprintf(FERROR,
 214                                     "ERROR: unexpected EOF in delete-delay file.\n");
 215                         }
 216                         return -1;
 217                 }
 218                 if (len < 0) {
 219                         rsyserr(FERROR, errno,
 220                                 "reading delete-delay file");
 221                         return -1;
 222                 }
 223                 deldelay_cnt += len;
 224                 read_pos = 0;
 225         }
 226
 227         bp = deldelay_buf + read_pos;
 228         if (*bp == '!') {
 229                 bp++;
 230                 *flags_p = DEL_NO_UID_WRITE;
 231         } else
 232                 *flags_p = 0;
 233
 234         if (sscanf(bp, "%x ", &mode) != 1) {
 235           invalid_data:
 236                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 237                 return -1;
 238         }
 239         past_space = strchr(bp, ' ') + 1;
 240         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 241         read_pos = j + 1;
 242
 243         if (len > MAXPATHLEN) {
 244                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 245                 return -1;
 246         }
 247
 248         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 249          * instead of returning a pointer to our buffer. */
 250         memcpy(buf, past_space, len);
 251
 252         return mode;
 253 }
 254
 255 static void do_delayed_deletions(char *delbuf)
 256 {
 257         int mode, flags;
 258
 259         if (deldelay_fd >= 0) {
 260                 if (deldelay_cnt && !flush_delete_delay())
 261                         return;
 262                 lseek(deldelay_fd, 0, 0);
 263         }
 264         while ((mode = read_delay_line(delbuf, &flags)) >= 0)
 265                 delete_item(delbuf, mode, flags | DEL_RECURSE);
 266         if (deldelay_fd >= 0)
 267                 close(deldelay_fd);
 268 }
 269
 270 /* This function is used to implement per-directory deletion, and is used by
 271  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 272  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 273  * call will append names onto the end, but the old dir value will be restored
 274  * on exit). */
 275 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 276 {
 277         static int already_warned = 0;
 278         struct file_list *dirlist;
 279         char delbuf[MAXPATHLEN];
 280         int dlen, i;
 281
 282         if (!fbuf) {
 283                 change_local_filter_dir(NULL, 0, 0);
 284                 return;
 285         }
 286
 287         if (DEBUG_GTE(DEL, 2))
 288                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 289
 290         if (allowed_lull)
 291                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
 292
 293         if (io_error & IOERR_GENERAL && !ignore_errors) {
 294                 if (already_warned)
 295                         return;
 296                 rprintf(FINFO,
 297                         "IO error encountered -- skipping file deletion\n");
 298                 already_warned = 1;
 299                 return;
 300         }
 301
 302         dlen = strlen(fbuf);
 303         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 304
 305         if (one_file_system) {
 306                 if (file->flags & FLAG_TOP_DIR)
 307                         filesystem_dev = *fs_dev;
 308                 else if (filesystem_dev != *fs_dev)
 309                         return;
 310         }
 311
 312         dirlist = get_dirlist(fbuf, dlen, 0);
 313
 314         /* If an item in dirlist is not found in flist, delete it
 315          * from the filesystem. */
 316         for (i = dirlist->used; i--; ) {
 317                 struct file_struct *fp = dirlist->files[i];
 318                 if (!F_IS_ACTIVE(fp))
 319                         continue;
 320                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 321                         if (INFO_GTE(MOUNT, 1))
 322                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 323                                         f_name(fp, NULL));
 324                         continue;
 325                 }
 326                 /* Here we want to match regardless of file type.  Replacement
 327                  * of a file with one of another type is handled separately by
 328                  * a delete_item call with a DEL_MAKE_ROOM flag. */
 329                 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
 330                         int flags = DEL_RECURSE;
 331                         if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
 332                                 flags |= DEL_NO_UID_WRITE;
 333                         f_name(fp, delbuf);
 334                         if (delete_during == 2) {
 335                                 if (!remember_delete(fp, delbuf, flags))
 336                                         break;
 337                         } else
 338                                 delete_item(delbuf, fp->mode, flags);
 339                 }
 340         }
 341
 342         flist_free(dirlist);
 343 }
 344
 345 /* This deletes any files on the receiving side that are not present on the
 346  * sending side.  This is used by --delete-before and --delete-after. */
 347 static void do_delete_pass(void)
 348 {
 349         char fbuf[MAXPATHLEN];
 350         STRUCT_STAT st;
 351         int j;
 352
 353         /* dry_run is incremented when the destination doesn't exist yet. */
 354         if (dry_run > 1 || list_only)
 355                 return;
 356
 357         for (j = 0; j < cur_flist->used; j++) {
 358                 struct file_struct *file = cur_flist->sorted[j];
 359
 360                 if (!F_IS_ACTIVE(file))
 361                         continue;
 362
 363                 f_name(file, fbuf);
 364
 365                 if (!(file->flags & FLAG_CONTENT_DIR)) {
 366                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
 367                         continue;
 368                 }
 369
 370                 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
 371                         rprintf(FINFO, "deleting in %s\n", fbuf);
 372
 373                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 374                  || !S_ISDIR(st.st_mode))
 375                         continue;
 376
 377                 delete_in_dir(fbuf, file, &st.st_dev);
 378         }
 379         delete_in_dir(NULL, NULL, &dev_zero);
 380
 381         if (INFO_GTE(FLIST, 2) && !am_server)
 382                 rprintf(FINFO, "                    \r");
 383 }
 384
 385 static inline int time_differs(struct file_struct *file, stat_x *sxp)
 386 {
 387         return cmp_time(sxp->st.st_mtime, file->modtime);
 388 }
 389
 390 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
 391 {
 392         if (preserve_perms)
 393                 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
 394
 395         if (preserve_executability)
 396                 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
 397
 398         return 0;
 399 }
 400
 401 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
 402 {
 403         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 404                 return 1;
 405
 406         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 407                 return 1;
 408
 409         return 0;
 410 }
 411
 412 #ifdef SUPPORT_ACLS
 413 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 414 {
 415         if (preserve_acls) {
 416                 if (!ACL_READY(*sxp))
 417                         get_acl(fname, sxp);
 418                 if (set_acl(NULL, file, sxp, file->mode))
 419                         return 1;
 420         }
 421
 422         return 0;
 423 }
 424 #endif
 425
 426 #ifdef SUPPORT_XATTRS
 427 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 428 {
 429         if (preserve_xattrs) {
 430                 if (!XATTR_READY(*sxp))
 431                         get_xattr(fname, sxp);
 432                 if (xattr_diff(file, sxp, 0))
 433                         return 1;
 434         }
 435
 436         return 0;
 437 }
 438 #endif
 439
 440 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 441 {
 442         if (S_ISLNK(file->mode)) {
 443 #ifdef CAN_SET_SYMLINK_TIMES
 444                 if (preserve_times & PRESERVE_LINK_TIMES && time_differs(file, sxp))
 445                         return 0;
 446 #endif
 447 #ifdef CAN_CHMOD_SYMLINK
 448                 if (perms_differ(file, sxp))
 449                         return 0;
 450 #endif
 451 #ifdef CAN_CHOWN_SYMLINK
 452                 if (ownership_differs(file, sxp))
 453                         return 0;
 454 #endif
 455 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
 456                 if (acls_differ(fname, file, sxp))
 457                         return 0;
 458 #endif
 459 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
 460                 if (xattrs_differ(fname, file, sxp))
 461                         return 0;
 462 #endif
 463         } else {
 464                 if (preserve_times && time_differs(file, sxp))
 465                         return 0;
 466                 if (perms_differ(file, sxp))
 467                         return 0;
 468                 if (ownership_differs(file, sxp))
 469                         return 0;
 470 #ifdef SUPPORT_ACLS
 471                 if (acls_differ(fname, file, sxp))
 472                         return 0;
 473 #endif
 474 #ifdef SUPPORT_XATTRS
 475                 if (xattrs_differ(fname, file, sxp))
 476                         return 0;
 477 #endif
 478         }
 479
 480         return 1;
 481 }
 482
 483 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 484              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 485              const char *xname)
 486 {
 487         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 488                 int keep_time = !preserve_times ? 0
 489                     : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
 490                     : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
 491                     : 1;
 492
 493                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 494                         iflags |= ITEM_REPORT_SIZE;
 495                 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
 496                         if (iflags & ITEM_LOCAL_CHANGE)
 497                                 iflags |= symlink_timeset_failed_flags;
 498                 } else if (keep_time
 499                  ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
 500                  : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
 501                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 502                         iflags |= ITEM_REPORT_TIME;
 503 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 504                 if (S_ISLNK(file->mode)) {
 505                         ;
 506                 } else
 507 #endif
 508                 if (preserve_perms) {
 509                         if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 510                                 iflags |= ITEM_REPORT_PERMS;
 511                 } else if (preserve_executability
 512                  && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 513                         iflags |= ITEM_REPORT_PERMS;
 514                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 515                         iflags |= ITEM_REPORT_OWNER;
 516                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 517                     && sxp->st.st_gid != (gid_t)F_GROUP(file))
 518                         iflags |= ITEM_REPORT_GROUP;
 519 #ifdef SUPPORT_ACLS
 520                 if (preserve_acls && !S_ISLNK(file->mode)) {
 521                         if (!ACL_READY(*sxp))
 522                                 get_acl(fnamecmp, sxp);
 523                         if (set_acl(NULL, file, sxp, file->mode))
 524                                 iflags |= ITEM_REPORT_ACL;
 525                 }
 526 #endif
 527 #ifdef SUPPORT_XATTRS
 528                 if (preserve_xattrs) {
 529                         if (!XATTR_READY(*sxp))
 530                                 get_xattr(fnamecmp, sxp);
 531                         if (xattr_diff(file, sxp, 1))
 532                                 iflags |= ITEM_REPORT_XATTR;
 533                 }
 534 #endif
 535         } else {
 536 #ifdef SUPPORT_XATTRS
 537                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 538                         iflags |= ITEM_REPORT_XATTR;
 539 #endif
 540                 iflags |= ITEM_IS_NEW;
 541         }
 542
 543         iflags &= 0xffff;
 544         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
 545           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 546                 if (protocol_version >= 29) {
 547                         if (ndx >= 0)
 548                                 write_ndx(sock_f_out, ndx);
 549                         write_shortint(sock_f_out, iflags);
 550                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 551                                 write_byte(sock_f_out, fnamecmp_type);
 552                         if (iflags & ITEM_XNAME_FOLLOWS)
 553                                 write_vstring(sock_f_out, xname, strlen(xname));
 554 #ifdef SUPPORT_XATTRS
 555                         if (preserve_xattrs && do_xfers
 556                          && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
 557                                 int fd = iflags & ITEM_REPORT_XATTR
 558                                       && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
 559                                        ? sock_f_out : -1;
 560                                 send_xattr_request(NULL, file, fd);
 561                         }
 562 #endif
 563                 } else if (ndx >= 0) {
 564                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 565                         log_item(code, file, iflags, xname);
 566                 }
 567         }
 568 }
 569
 570
 571 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 572 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 573 {
 574         if (st->st_size != F_LENGTH(file))
 575                 return 0;
 576
 577         /* if always checksum is set then we use the checksum instead
 578            of the file time to determine whether to sync */
 579         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 580                 char sum[MAX_DIGEST_LEN];
 581                 file_checksum(fn, st, sum);
 582                 return memcmp(sum, F_SUM(file), checksum_len) == 0;
 583         }
 584
 585         if (size_only > 0)
 586                 return 1;
 587
 588         if (ignore_times)
 589                 return 0;
 590
 591         return cmp_time(st->st_mtime, file->modtime) == 0;
 592 }
 593
 594
 595 /*
 596  * set (initialize) the size entries in the per-file sum_struct
 597  * calculating dynamic block and checksum sizes.
 598  *
 599  * This is only called from generate_and_send_sums() but is a separate
 600  * function to encapsulate the logic.
 601  *
 602  * The block size is a rounded square root of file length.
 603  *
 604  * The checksum size is determined according to:
 605  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 606  * provided by Donovan Baarda which gives a probability of rsync
 607  * algorithm corrupting data and falling back using the whole md4
 608  * checksums.
 609  *
 610  * This might be made one of several selectable heuristics.
 611  */
 612 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 613 {
 614         int32 blength;
 615         int s2length;
 616         int64 l;
 617
 618         if (len < 0) {
 619                 /* The file length overflowed our int64 var, so we can't process this file. */
 620                 sum->count = -1; /* indicate overflow error */
 621                 return;
 622         }
 623
 624         if (block_size)
 625                 blength = block_size;
 626         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 627                 blength = BLOCK_SIZE;
 628         else {
 629                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
 630                 int32 c;
 631                 int cnt;
 632                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 633                 if (c < 0 || c >= max_blength)
 634                         blength = max_blength;
 635                 else {
 636                     blength = 0;
 637                     do {
 638                             blength |= c;
 639                             if (len < (int64)blength * blength)
 640                                     blength &= ~c;
 641                             c >>= 1;
 642                     } while (c >= 8);   /* round to multiple of 8 */
 643                     blength = MAX(blength, BLOCK_SIZE);
 644                 }
 645         }
 646
 647         if (protocol_version < 27) {
 648                 s2length = csum_length;
 649         } else if (csum_length == SUM_LENGTH) {
 650                 s2length = SUM_LENGTH;
 651         } else {
 652                 int32 c;
 653                 int b = BLOCKSUM_BIAS;
 654                 for (l = len; l >>= 1; b += 2) {}
 655                 for (c = blength; (c >>= 1) && b; b--) {}
 656                 /* add a bit, subtract rollsum, round up. */
 657                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 658                 s2length = MAX(s2length, csum_length);
 659                 s2length = MIN(s2length, SUM_LENGTH);
 660         }
 661
 662         sum->flength    = len;
 663         sum->blength    = blength;
 664         sum->s2length   = s2length;
 665         sum->remainder  = (int32)(len % blength);
 666         sum->count      = (int32)(l = (len / blength) + (sum->remainder != 0));
 667
 668         if ((int64)sum->count != l)
 669                 sum->count = -1;
 670
 671         if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
 672                 rprintf(FINFO,
 673                         "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
 674                         big_num(sum->count), (long)sum->remainder, (long)sum->blength,
 675                         sum->s2length, big_num(sum->flength));
 676         }
 677 }
 678
 679
 680 /*
 681  * Generate and send a stream of signatures/checksums that describe a buffer
 682  *
 683  * Generate approximately one checksum every block_len bytes.
 684  */
 685 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 686 {
 687         int32 i;
 688         struct map_struct *mapbuf;
 689         struct sum_struct sum;
 690         OFF_T offset = 0;
 691
 692         sum_sizes_sqroot(&sum, len);
 693         if (sum.count < 0)
 694                 return -1;
 695         write_sum_head(f_out, &sum);
 696
 697         if (append_mode > 0 && f_copy < 0)
 698                 return 0;
 699
 700         if (len > 0)
 701                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 702         else
 703                 mapbuf = NULL;
 704
 705         for (i = 0; i < sum.count; i++) {
 706                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 707                 char *map = map_ptr(mapbuf, offset, n1);
 708                 char sum2[SUM_LENGTH];
 709                 uint32 sum1;
 710
 711                 len -= n1;
 712                 offset += n1;
 713
 714                 if (f_copy >= 0) {
 715                         full_write(f_copy, map, n1);
 716                         if (append_mode > 0)
 717                                 continue;
 718                 }
 719
 720                 sum1 = get_checksum1(map, n1);
 721                 get_checksum2(map, n1, sum2);
 722
 723                 if (DEBUG_GTE(DELTASUM, 3)) {
 724                         rprintf(FINFO,
 725                                 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
 726                                 big_num(i), big_num(offset - n1), (long)n1,
 727                                 (unsigned long)sum1);
 728                 }
 729                 write_int(f_out, sum1);
 730                 write_buf(f_out, sum2, sum.s2length);
 731         }
 732
 733         if (mapbuf)
 734                 unmap_file(mapbuf);
 735
 736         return 0;
 737 }
 738
 739
 740 /* Try to find a filename in the same dir as "fname" with a similar name. */
 741 static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
 742 {
 743         int fname_len, fname_suf_len;
 744         const char *fname_suf, *fname = file->basename;
 745         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 746         int i, j;
 747         struct file_struct *lowest_fp = NULL;
 748
 749         fname_len = strlen(fname);
 750         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 751
 752         /* Try to find an exact size+mtime match first. */
 753         for (i = 0; i < fuzzy_basis; i++) {
 754                 struct file_list *dirlist = dirlist_array[i];
 755
 756                 if (!dirlist)
 757                         continue;
 758
 759                 for (j = 0; j < dirlist->used; j++) {
 760                         struct file_struct *fp = dirlist->files[j];
 761
 762                         if (!F_IS_ACTIVE(fp))
 763                                 continue;
 764
 765                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 766                                 continue;
 767
 768                         if (F_LENGTH(fp) == F_LENGTH(file) && cmp_time(fp->modtime, file->modtime) == 0) {
 769                                 if (DEBUG_GTE(FUZZY, 2))
 770                                         rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
 771                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 772                                 return fp;
 773                         }
 774
 775                 }
 776         }
 777
 778         for (i = 0; i < fuzzy_basis; i++) {
 779                 struct file_list *dirlist = dirlist_array[i];
 780
 781                 if (!dirlist)
 782                         continue;
 783
 784                 for (j = 0; j < dirlist->used; j++) {
 785                         struct file_struct *fp = dirlist->files[j];
 786                         const char *suf, *name;
 787                         int len, suf_len;
 788                         uint32 dist;
 789
 790                         if (!F_IS_ACTIVE(fp))
 791                                 continue;
 792
 793                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 794                                 continue;
 795
 796                         name = fp->basename;
 797                         len = strlen(name);
 798                         suf = find_filename_suffix(name, len, &suf_len);
 799
 800                         dist = fuzzy_distance(name, len, fname, fname_len);
 801                         /* Add some extra weight to how well the suffixes match. */
 802                         dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
 803                         if (DEBUG_GTE(FUZZY, 2)) {
 804                                 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 805                                         f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
 806                         }
 807                         if (dist <= lowest_dist) {
 808                                 lowest_dist = dist;
 809                                 lowest_fp = fp;
 810                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 811                         }
 812                 }
 813         }
 814
 815         return lowest_fp;
 816 }
 817
 818 /* Copy a file found in our --copy-dest handling. */
 819 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 820 {
 821         char buf[MAXPATHLEN];
 822         const char *copy_to, *partialptr;
 823         int save_preserve_xattrs = preserve_xattrs;
 824         int ok, fd_w;
 825
 826         if (inplace) {
 827                 /* Let copy_file open the destination in place. */
 828                 fd_w = -1;
 829                 copy_to = dest;
 830         } else {
 831                 fd_w = open_tmpfile(buf, dest, file);
 832                 if (fd_w < 0)
 833                         return -1;
 834                 copy_to = buf;
 835         }
 836         cleanup_set(copy_to, NULL, NULL, -1, -1);
 837         if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
 838                 if (INFO_GTE(COPY, 1)) {
 839                         rsyserr(FINFO, errno, "copy_file %s => %s",
 840                                 full_fname(src), copy_to);
 841                 }
 842                 /* Try to clean up. */
 843                 unlink(copy_to);
 844                 cleanup_disable();
 845                 return -1;
 846         }
 847         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 848         preserve_xattrs = 0; /* xattrs were copied with file */
 849         ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 850         preserve_xattrs = save_preserve_xattrs;
 851         cleanup_disable();
 852         return ok ? 0 : -1;
 853 }
 854
 855 /* This is only called for regular files.  We return -2 if we've finished
 856  * handling the file, -1 if no dest-linking occurred, or a non-negative
 857  * value if we found an alternate basis file.  If we're called with the
 858  * find_exact_for_existing flag, the destination file already exists, so
 859  * we only try to find an exact alt-dest match.  In this case, the returns
 860  * are only -2 & -1 (both as above). */
 861 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 862                          char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
 863                          int itemizing, enum logcode code)
 864 {
 865         STRUCT_STAT real_st = sxp->st;
 866         int best_match = -1;
 867         int match_level = 0;
 868         int j = 0;
 869
 870         do {
 871                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 872                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 873                         continue;
 874                 switch (match_level) {
 875                 case 0:
 876                         best_match = j;
 877                         match_level = 1;
 878                         /* FALL THROUGH */
 879                 case 1:
 880                         if (!unchanged_file(cmpbuf, file, &sxp->st))
 881                                 continue;
 882                         best_match = j;
 883                         match_level = 2;
 884                         /* FALL THROUGH */
 885                 case 2:
 886                         if (!unchanged_attrs(cmpbuf, file, sxp)) {
 887                                 free_stat_x(sxp);
 888                                 continue;
 889                         }
 890                         best_match = j;
 891                         match_level = 3;
 892                         break;
 893                 }
 894                 break;
 895         } while (basis_dir[++j] != NULL);
 896
 897         if (!match_level)
 898                 return -1;
 899
 900         if (j != best_match) {
 901                 j = best_match;
 902                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 903                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
 904                         return -1;
 905         }
 906
 907         if (match_level == 3 && !copy_dest) {
 908                 if (find_exact_for_existing) {
 909                         if (link_dest && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
 910                                 return -1;
 911                         if (do_unlink(fname) < 0 && errno != ENOENT) {
 912                                 sxp->st = real_st;
 913                                 return -1;
 914                         }
 915                 }
 916 #ifdef SUPPORT_HARD_LINKS
 917                 if (link_dest) {
 918                         if (!hard_link_one(file, fname, cmpbuf, 1))
 919                                 goto try_a_copy;
 920                         if (preserve_hard_links && F_IS_HLINKED(file))
 921                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
 922                         if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
 923                                 itemize(cmpbuf, file, ndx, 1, sxp,
 924                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 925                                         0, "");
 926                         }
 927                 } else
 928 #endif
 929                 {
 930                         if (itemizing)
 931                                 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
 932                 }
 933                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
 934                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 935                 return -2;
 936         }
 937
 938         if (find_exact_for_existing) {
 939                 sxp->st = real_st;
 940                 return -1;
 941         }
 942
 943         if (match_level >= 2) {
 944 #ifdef SUPPORT_HARD_LINKS
 945           try_a_copy: /* Copy the file locally. */
 946 #endif
 947                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
 948                         if (find_exact_for_existing) /* Can get here via hard-link failure */
 949                                 sxp->st = real_st;
 950                         return -1;
 951                 }
 952                 if (itemizing)
 953                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
 954                 if (maybe_ATTRS_REPORT
 955                  && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
 956                   || (INFO_GTE(NAME, 2) && match_level == 3))) {
 957                         code = match_level == 3 ? FCLIENT : FINFO;
 958                         rprintf(code, "%s%s\n", fname,
 959                                 match_level == 3 ? " is uptodate" : "");
 960                 }
 961 #ifdef SUPPORT_HARD_LINKS
 962                 if (preserve_hard_links && F_IS_HLINKED(file))
 963                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
 964 #endif
 965                 return -2;
 966         }
 967
 968         return FNAMECMP_BASIS_DIR_LOW + j;
 969 }
 970
 971 /* This is only called for non-regular files.  We return -2 if we've finished
 972  * handling the file, or -1 if no dest-linking occurred, or a non-negative
 973  * value if we found an alternate basis file. */
 974 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 975                          char *cmpbuf, stat_x *sxp, int itemizing,
 976                          enum logcode code)
 977 {
 978         int best_match = -1;
 979         int match_level = 0;
 980         enum nonregtype type;
 981         uint32 *devp;
 982 #ifdef SUPPORT_LINKS
 983         char lnk[MAXPATHLEN];
 984         int len;
 985 #endif
 986         int j = 0;
 987
 988 #ifndef SUPPORT_LINKS
 989         if (S_ISLNK(file->mode))
 990                 return -1;
 991 #endif
 992         if (S_ISDIR(file->mode)) {
 993                 type = TYPE_DIR;
 994         } else if (IS_SPECIAL(file->mode))
 995                 type = TYPE_SPECIAL;
 996         else if (IS_DEVICE(file->mode))
 997                 type = TYPE_DEVICE;
 998 #ifdef SUPPORT_LINKS
 999         else if (S_ISLNK(file->mode))
1000                 type = TYPE_SYMLINK;
1001 #endif
1002         else {
1003                 rprintf(FERROR,
1004                         "internal: try_dests_non() called with invalid mode (%o)\n",
1005                         (int)file->mode);
1006                 exit_cleanup(RERR_UNSUPPORTED);
1007         }
1008
1009         do {
1010                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1011                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1012                         continue;
1013                 switch (type) {
1014                 case TYPE_DIR:
1015                         if (!S_ISDIR(sxp->st.st_mode))
1016                                 continue;
1017                         break;
1018                 case TYPE_SPECIAL:
1019                         if (!IS_SPECIAL(sxp->st.st_mode))
1020                                 continue;
1021                         break;
1022                 case TYPE_DEVICE:
1023                         if (!IS_DEVICE(sxp->st.st_mode))
1024                                 continue;
1025                         break;
1026                 case TYPE_SYMLINK:
1027 #ifdef SUPPORT_LINKS
1028                         if (!S_ISLNK(sxp->st.st_mode))
1029                                 continue;
1030                         break;
1031 #else
1032                         return -1;
1033 #endif
1034                 }
1035                 if (match_level < 1) {
1036                         match_level = 1;
1037                         best_match = j;
1038                 }
1039                 switch (type) {
1040                 case TYPE_DIR:
1041                 case TYPE_SPECIAL:
1042                         break;
1043                 case TYPE_DEVICE:
1044                         devp = F_RDEV_P(file);
1045                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1046                                 continue;
1047                         break;
1048                 case TYPE_SYMLINK:
1049 #ifdef SUPPORT_LINKS
1050                         if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1051                                 continue;
1052                         lnk[len] = '\0';
1053                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1054                                 continue;
1055                         break;
1056 #else
1057                         return -1;
1058 #endif
1059                 }
1060                 if (match_level < 2) {
1061                         match_level = 2;
1062                         best_match = j;
1063                 }
1064                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1065                         match_level = 3;
1066                         best_match = j;
1067                         break;
1068                 }
1069         } while (basis_dir[++j] != NULL);
1070
1071         if (!match_level)
1072                 return -1;
1073
1074         if (j != best_match) {
1075                 j = best_match;
1076                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1077                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1078                         return -1;
1079         }
1080
1081         if (match_level == 3) {
1082 #ifdef SUPPORT_HARD_LINKS
1083                 if (link_dest
1084 #ifndef CAN_HARDLINK_SYMLINK
1085                  && !S_ISLNK(file->mode)
1086 #endif
1087 #ifndef CAN_HARDLINK_SPECIAL
1088                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1089 #endif
1090                  && !S_ISDIR(file->mode)) {
1091                         if (do_link(cmpbuf, fname) < 0) {
1092                                 rsyserr(FERROR_XFER, errno,
1093                                         "failed to hard-link %s with %s",
1094                                         cmpbuf, fname);
1095                                 return j;
1096                         }
1097                         if (preserve_hard_links && F_IS_HLINKED(file))
1098                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1099                 } else
1100 #endif
1101                         match_level = 2;
1102                 if (itemizing && stdout_format_has_i
1103                  && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1104                         int chg = compare_dest && type != TYPE_DIR ? 0
1105                             : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1106                         char *lp = match_level == 3 ? "" : NULL;
1107                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1108                 }
1109                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1110                         rprintf(FCLIENT, "%s%s is uptodate\n",
1111                                 fname, type == TYPE_DIR ? "/" : "");
1112                 }
1113                 return -2;
1114         }
1115
1116         return j;
1117 }
1118
1119 static void list_file_entry(struct file_struct *f)
1120 {
1121         char permbuf[PERMSTRING_SIZE];
1122         int64 len;
1123         int colwidth = human_readable ? 14 : 11;
1124
1125         if (!F_IS_ACTIVE(f)) {
1126                 /* this can happen if duplicate names were removed */
1127                 return;
1128         }
1129
1130         permstring(permbuf, f->mode);
1131         len = F_LENGTH(f);
1132
1133         /* TODO: indicate '+' if the entry has an ACL. */
1134
1135 #ifdef SUPPORT_LINKS
1136         if (preserve_links && S_ISLNK(f->mode)) {
1137                 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1138                         permbuf, colwidth, human_num(len),
1139                         timestring(f->modtime), f_name(f, NULL),
1140                         F_SYMLINK(f));
1141         } else
1142 #endif
1143         if (missing_args == 2 && f->mode == 0) {
1144                 rprintf(FINFO, "%-*s %s\n",
1145                         colwidth + 31, "*missing",
1146                         f_name(f, NULL));
1147         } else {
1148                 rprintf(FINFO, "%s %*s %s %s\n",
1149                         permbuf, colwidth, human_num(len),
1150                         timestring(f->modtime), f_name(f, NULL));
1151         }
1152 }
1153
1154 static int phase = 0;
1155 static int dflt_perms;
1156
1157 static int implied_dirs_are_missing;
1158 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1159 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1160 {
1161         return F_DEPTH(file) > F_DEPTH(subtree)
1162                 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1163 }
1164
1165 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1166  * make sure it exists, and has the right permissions/timestamp info.  For
1167  * all other non-regular files (symlinks, etc.) we create them here.  For
1168  * regular files that have changed, we try to find a basis file and then
1169  * start sending checksums.  The ndx is the file's unique index value.
1170  *
1171  * The fname parameter must point to a MAXPATHLEN buffer!  (e.g it gets
1172  * passed to delete_item(), which can use it during a recursive delete.)
1173  *
1174  * Note that f_out is set to -1 when doing final directory-permission and
1175  * modification-time repair. */
1176 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1177                            int itemizing, enum logcode code, int f_out)
1178 {
1179         static const char *parent_dirname = "";
1180         /* Missing dir not created due to --dry-run; will still be scanned. */
1181         static struct file_struct *dry_missing_dir = NULL;
1182         /* Missing dir whose contents are skipped altogether due to
1183          * --ignore-non-existing, daemon exclude, or mkdir failure. */
1184         static struct file_struct *skip_dir = NULL;
1185         static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
1186         static int need_fuzzy_dirlist = 0;
1187         struct file_struct *fuzzy_file = NULL;
1188         int fd = -1, f_copy = -1;
1189         stat_x sx, real_sx;
1190         STRUCT_STAT partial_st;
1191         struct file_struct *back_file = NULL;
1192         int statret, real_ret, stat_errno;
1193         char *fnamecmp, *partialptr, *backupptr = NULL;
1194         char fnamecmpbuf[MAXPATHLEN];
1195         uchar fnamecmp_type;
1196         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1197         int is_dir = !S_ISDIR(file->mode) ? 0
1198                    : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1199                    : 1;
1200
1201         if (DEBUG_GTE(GENR, 1))
1202                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1203
1204         if (list_only) {
1205                 if (is_dir < 0
1206                  || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1207                         return;
1208                 list_file_entry(file);
1209                 return;
1210         }
1211
1212         if (skip_dir) {
1213                 if (is_below(file, skip_dir)) {
1214                         if (is_dir)
1215                                 file->flags |= FLAG_MISSING_DIR;
1216 #ifdef SUPPORT_HARD_LINKS
1217                         else if (F_IS_HLINKED(file))
1218                                 handle_skipped_hlink(file, itemizing, code, f_out);
1219 #endif
1220                         return;
1221                 }
1222                 skip_dir = NULL;
1223         }
1224
1225         init_stat_x(&sx);
1226         if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1227                 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1228                         if (is_dir < 0)
1229                                 return;
1230 #ifdef SUPPORT_HARD_LINKS
1231                         if (F_IS_HLINKED(file))
1232                                 handle_skipped_hlink(file, itemizing, code, f_out);
1233 #endif
1234                         rprintf(FERROR_XFER,
1235                                 "ERROR: daemon refused to receive %s \"%s\"\n",
1236                                 is_dir ? "directory" : "file", fname);
1237                         if (is_dir)
1238                                 goto skipping_dir_contents;
1239                         return;
1240                 }
1241         }
1242
1243         if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1244                 int i;
1245           parent_is_dry_missing:
1246                 for (i = 0; i < fuzzy_basis; i++) {
1247                         if (fuzzy_dirlist[i]) {
1248                                 flist_free(fuzzy_dirlist[i]);
1249                                 fuzzy_dirlist[i] = NULL;
1250                         }
1251                 }
1252                 parent_dirname = "";
1253                 statret = -1;
1254                 stat_errno = ENOENT;
1255         } else {
1256                 const char *dn = file->dirname ? file->dirname : ".";
1257                 dry_missing_dir = NULL;
1258                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1259                         if (relative_paths && !implied_dirs
1260                          && do_stat(dn, &sx.st) < 0) {
1261                                 if (dry_run)
1262                                         goto parent_is_dry_missing;
1263                                 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1264                                         rsyserr(FERROR_XFER, errno,
1265                                                 "recv_generator: mkdir %s failed",
1266                                                 full_fname(dn));
1267                                 }
1268                         }
1269                         if (fuzzy_basis) {
1270                                 int i;
1271                                 for (i = 0; i < fuzzy_basis; i++) {
1272                                         if (fuzzy_dirlist[i]) {
1273                                                 flist_free(fuzzy_dirlist[i]);
1274                                                 fuzzy_dirlist[i] = NULL;
1275                                         }
1276                                 }
1277                                 need_fuzzy_dirlist = 1;
1278                         }
1279 #ifdef SUPPORT_ACLS
1280                         if (!preserve_perms)
1281                                 dflt_perms = default_perms_for_dir(dn);
1282 #endif
1283                 }
1284                 parent_dirname = dn;
1285
1286                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1287                         int i;
1288                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1289                         for (i = 0; i < fuzzy_basis; i++) {
1290                                 if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
1291                                         continue;
1292                                 fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES);
1293                                 if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
1294                                         flist_free(fuzzy_dirlist[i]);
1295                                         fuzzy_dirlist[i] = NULL;
1296                                 }
1297                         }
1298                         need_fuzzy_dirlist = 0;
1299                 }
1300
1301                 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1302                 stat_errno = errno;
1303         }
1304
1305         if (missing_args == 2 && file->mode == 0) {
1306                 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1307                         return;
1308                 if (statret == 0)
1309                         delete_item(fname, sx.st.st_mode, del_opts);
1310                 return;
1311         }
1312
1313         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1314                 if (is_dir) {
1315                         if (is_dir < 0)
1316                                 return;
1317                         skip_dir = file;
1318                         file->flags |= FLAG_MISSING_DIR;
1319                 }
1320 #ifdef SUPPORT_HARD_LINKS
1321                 else if (F_IS_HLINKED(file))
1322                         handle_skipped_hlink(file, itemizing, code, f_out);
1323 #endif
1324                 if (INFO_GTE(SKIP, 1)) {
1325                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1326                                 is_dir ? "directory" : "file", fname);
1327                 }
1328                 return;
1329         }
1330
1331         if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1332          && !am_root && sx.st.st_uid == our_uid)
1333                 del_opts |= DEL_NO_UID_WRITE;
1334
1335         if (ignore_existing > 0 && statret == 0
1336          && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1337                 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1338                         rprintf(FINFO, "%s exists\n", fname);
1339 #ifdef SUPPORT_HARD_LINKS
1340                 if (F_IS_HLINKED(file))
1341                         handle_skipped_hlink(file, itemizing, code, f_out);
1342 #endif
1343                 goto cleanup;
1344         }
1345
1346         fnamecmp = fname;
1347
1348         if (is_dir) {
1349                 mode_t added_perms;
1350                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1351                         goto cleanup;
1352                 if (am_root < 0) {
1353                         /* For --fake-super, the dir must be useable by the copying
1354                          * user, just like it would be for root. */
1355                         added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1356                 } else
1357                         added_perms = 0;
1358                 if (is_dir < 0) {
1359                         if (!(preserve_times & PRESERVE_DIR_TIMES))
1360                                 return;
1361                         /* In inc_recurse mode we want to make sure any missing
1362                          * directories get created while we're still processing
1363                          * the parent dir (which allows us to touch the parent
1364                          * dir's mtime right away).  We will handle the dir in
1365                          * full later (right before we handle its contents). */
1366                         if (statret == 0
1367                          && (S_ISDIR(sx.st.st_mode)
1368                           || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1369                                 goto cleanup; /* Any errors get reported later. */
1370                         if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1371                                 file->flags |= FLAG_DIR_CREATED;
1372                         goto cleanup;
1373                 }
1374                 /* The file to be received is a directory, so we need
1375                  * to prepare appropriately.  If there is already a
1376                  * file of that name and it is *not* a directory, then
1377                  * we need to delete it.  If it doesn't exist, then
1378                  * (perhaps recursively) create it. */
1379                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1380                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1381                                 goto skipping_dir_contents;
1382                         statret = -1;
1383                 }
1384                 if (dry_run && statret != 0) {
1385                         if (!dry_missing_dir)
1386                                 dry_missing_dir = file;
1387                         file->flags |= FLAG_MISSING_DIR;
1388                 }
1389                 init_stat_x(&real_sx);
1390                 real_sx.st = sx.st;
1391                 real_ret = statret;
1392                 if (file->flags & FLAG_DIR_CREATED)
1393                         statret = -1;
1394                 if (!preserve_perms) { /* See comment in non-dir code below. */
1395                         file->mode = dest_mode(file->mode, sx.st.st_mode,
1396                                                dflt_perms, statret == 0);
1397                 }
1398                 if (statret != 0 && basis_dir[0] != NULL) {
1399                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1400                                               itemizing, code);
1401                         if (j == -2) {
1402                                 itemizing = 0;
1403                                 code = FNONE;
1404                                 statret = 1;
1405                         } else if (j >= 0) {
1406                                 statret = 1;
1407                                 fnamecmp = fnamecmpbuf;
1408                         }
1409                 }
1410                 if (itemizing && f_out != -1) {
1411                         itemize(fnamecmp, file, ndx, statret, &sx,
1412                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1413                 }
1414                 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1415                         if (!relative_paths || errno != ENOENT
1416                          || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1417                          || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1418                                 rsyserr(FERROR_XFER, errno,
1419                                         "recv_generator: mkdir %s failed",
1420                                         full_fname(fname));
1421                           skipping_dir_contents:
1422                                 rprintf(FERROR,
1423                                     "*** Skipping any contents from this failed directory ***\n");
1424                                 skip_dir = file;
1425                                 file->flags |= FLAG_MISSING_DIR;
1426                                 goto cleanup;
1427                         }
1428                 }
1429
1430 #ifdef SUPPORT_XATTRS
1431                 if (preserve_xattrs && statret == 1)
1432                         copy_xattrs(fnamecmpbuf, fname);
1433 #endif
1434                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1435                     && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1436                         rprintf(code, "%s/\n", fname);
1437
1438                 /* We need to ensure that the dirs in the transfer have both
1439                  * readable and writable permissions during the time we are
1440                  * putting files within them.  This is then restored to the
1441                  * former permissions after the transfer is done. */
1442 #ifdef HAVE_CHMOD
1443                 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1444                         mode_t mode = file->mode | S_IRWXU;
1445                         if (do_chmod(fname, mode) < 0) {
1446                                 rsyserr(FERROR_XFER, errno,
1447                                         "failed to modify permissions on %s",
1448                                         full_fname(fname));
1449                         }
1450                         need_retouch_dir_perms = 1;
1451                 }
1452 #endif
1453
1454                 if (real_ret != 0 && one_file_system)
1455                         real_sx.st.st_dev = filesystem_dev;
1456                 if (inc_recurse) {
1457                         if (one_file_system) {
1458                                 uint32 *devp = F_DIR_DEV_P(file);
1459                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1460                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1461                         }
1462                 }
1463                 else if (delete_during && f_out != -1 && !phase
1464                     && !(file->flags & FLAG_MISSING_DIR)) {
1465                         if (file->flags & FLAG_CONTENT_DIR)
1466                                 delete_in_dir(fname, file, &real_sx.st.st_dev);
1467                         else
1468                                 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1469                 }
1470                 goto cleanup;
1471         }
1472
1473         /* If we're not preserving permissions, change the file-list's
1474          * mode based on the local permissions and some heuristics. */
1475         if (!preserve_perms) {
1476                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1477                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1478                                        exists);
1479         }
1480
1481 #ifdef SUPPORT_HARD_LINKS
1482         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1483          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1484                 goto cleanup;
1485 #endif
1486
1487         if (preserve_links && S_ISLNK(file->mode)) {
1488 #ifdef SUPPORT_LINKS
1489                 const char *sl = F_SYMLINK(file);
1490                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1491                         if (INFO_GTE(NAME, 1)) {
1492                                 if (solo_file) {
1493                                         /* fname contains the destination path, but we
1494                                          * want to report the source path. */
1495                                         fname = f_name(file, NULL);
1496                                 }
1497                                 rprintf(FINFO,
1498                                         "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1499                                         fname, sl);
1500                         }
1501                         return;
1502                 }
1503                 if (statret == 0) {
1504                         char lnk[MAXPATHLEN];
1505                         int len;
1506
1507                         if (S_ISLNK(sx.st.st_mode)
1508                          && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1509                          && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1510                                 /* The link is pointing to the right place. */
1511                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1512                                 if (itemizing)
1513                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1514 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1515                                 if (preserve_hard_links && F_IS_HLINKED(file))
1516                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1517 #endif
1518                                 if (remove_source_files == 1)
1519                                         goto return_with_success;
1520                                 goto cleanup;
1521                         }
1522                 } else if (basis_dir[0] != NULL) {
1523                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1524                                               itemizing, code);
1525                         if (j == -2) {
1526 #ifndef CAN_HARDLINK_SYMLINK
1527                                 if (link_dest) {
1528                                         /* Resort to --copy-dest behavior. */
1529                                 } else
1530 #endif
1531                                 if (!copy_dest)
1532                                         goto cleanup;
1533                                 itemizing = 0;
1534                                 code = FNONE;
1535                         } else if (j >= 0) {
1536                                 statret = 1;
1537                                 fnamecmp = fnamecmpbuf;
1538                         }
1539                 }
1540                 if (atomic_create(file, fname, sl, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1541                         set_file_attrs(fname, file, NULL, NULL, 0);
1542                         if (itemizing) {
1543                                 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1544                                         statret = -1;
1545                                 itemize(fnamecmp, file, ndx, statret, &sx,
1546                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1547                         }
1548                         if (code != FNONE && INFO_GTE(NAME, 1))
1549                                 rprintf(code, "%s -> %s\n", fname, sl);
1550 #ifdef SUPPORT_HARD_LINKS
1551                         if (preserve_hard_links && F_IS_HLINKED(file))
1552                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1553 #endif
1554                         /* This does not check remove_source_files == 1
1555                          * because this is one of the items that the old
1556                          * --remove-sent-files option would remove. */
1557                         if (remove_source_files)
1558                                 goto return_with_success;
1559                 }
1560 #endif
1561                 goto cleanup;
1562         }
1563
1564         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1565          || (preserve_specials && IS_SPECIAL(file->mode))) {
1566                 dev_t rdev;
1567                 int del_for_flag = 0;
1568                 if (IS_DEVICE(file->mode)) {
1569                         uint32 *devp = F_RDEV_P(file);
1570                         rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1571                 } else
1572                         rdev = 0;
1573                 if (statret == 0) {
1574                         if (IS_DEVICE(file->mode)) {
1575                                 if (!IS_DEVICE(sx.st.st_mode))
1576                                         statret = -1;
1577                                 del_for_flag = DEL_FOR_DEVICE;
1578                         } else {
1579                                 if (!IS_SPECIAL(sx.st.st_mode))
1580                                         statret = -1;
1581                                 del_for_flag = DEL_FOR_SPECIAL;
1582                         }
1583                         if (statret == 0
1584                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1585                          && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1586                                 /* The device or special file is identical. */
1587                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1588                                 if (itemizing)
1589                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1590 #ifdef SUPPORT_HARD_LINKS
1591                                 if (preserve_hard_links && F_IS_HLINKED(file))
1592                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1593 #endif
1594                                 if (remove_source_files == 1)
1595                                         goto return_with_success;
1596                                 goto cleanup;
1597                         }
1598                 } else if (basis_dir[0] != NULL) {
1599                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1600                                               itemizing, code);
1601                         if (j == -2) {
1602 #ifndef CAN_HARDLINK_SPECIAL
1603                                 if (link_dest) {
1604                                         /* Resort to --copy-dest behavior. */
1605                                 } else
1606 #endif
1607                                 if (!copy_dest)
1608                                         goto cleanup;
1609                                 itemizing = 0;
1610                                 code = FNONE;
1611                         } else if (j >= 0) {
1612                                 statret = 1;
1613                                 fnamecmp = fnamecmpbuf;
1614                         }
1615                 }
1616                 if (DEBUG_GTE(GENR, 1)) {
1617                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1618                                 fname, (int)file->mode,
1619                                 (long)major(rdev), (long)minor(rdev));
1620                 }
1621                 if (atomic_create(file, fname, NULL, rdev, &sx, del_for_flag)) {
1622                         set_file_attrs(fname, file, NULL, NULL, 0);
1623                         if (itemizing) {
1624                                 itemize(fnamecmp, file, ndx, statret, &sx,
1625                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1626                         }
1627                         if (code != FNONE && INFO_GTE(NAME, 1))
1628                                 rprintf(code, "%s\n", fname);
1629 #ifdef SUPPORT_HARD_LINKS
1630                         if (preserve_hard_links && F_IS_HLINKED(file))
1631                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1632 #endif
1633                         if (remove_source_files == 1)
1634                                 goto return_with_success;
1635                 }
1636                 goto cleanup;
1637         }
1638
1639         if (!S_ISREG(file->mode)) {
1640                 if (solo_file)
1641                         fname = f_name(file, NULL);
1642                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1643                 goto cleanup;
1644         }
1645
1646         if (max_size >= 0 && F_LENGTH(file) > max_size) {
1647                 if (INFO_GTE(SKIP, 1)) {
1648                         if (solo_file)
1649                                 fname = f_name(file, NULL);
1650                         rprintf(FINFO, "%s is over max-size\n", fname);
1651                 }
1652                 goto cleanup;
1653         }
1654         if (min_size >= 0 && F_LENGTH(file) < min_size) {
1655                 if (INFO_GTE(SKIP, 1)) {
1656                         if (solo_file)
1657                                 fname = f_name(file, NULL);
1658                         rprintf(FINFO, "%s is under min-size\n", fname);
1659                 }
1660                 goto cleanup;
1661         }
1662
1663         if (update_only > 0 && statret == 0
1664             && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1665                 if (INFO_GTE(SKIP, 1))
1666                         rprintf(FINFO, "%s is newer\n", fname);
1667 #ifdef SUPPORT_HARD_LINKS
1668                 if (F_IS_HLINKED(file))
1669                         handle_skipped_hlink(file, itemizing, code, f_out);
1670 #endif
1671                 goto cleanup;
1672         }
1673
1674         fnamecmp_type = FNAMECMP_FNAME;
1675
1676         if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1677                 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1678                         goto cleanup;
1679                 statret = -1;
1680                 stat_errno = ENOENT;
1681         }
1682
1683         if (basis_dir[0] != NULL && (statret != 0 || !copy_dest)) {
1684                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1685                                       statret == 0, itemizing, code);
1686                 if (j == -2) {
1687                         if (remove_source_files == 1)
1688                                 goto return_with_success;
1689                         goto cleanup;
1690                 }
1691                 if (j >= 0) {
1692                         fnamecmp = fnamecmpbuf;
1693                         fnamecmp_type = j;
1694                         statret = 0;
1695                 }
1696         }
1697
1698         init_stat_x(&real_sx);
1699         real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
1700         real_ret = statret;
1701
1702         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1703             && link_stat(partialptr, &partial_st, 0) == 0
1704             && S_ISREG(partial_st.st_mode)) {
1705                 if (statret != 0)
1706                         goto prepare_to_open;
1707         } else
1708                 partialptr = NULL;
1709
1710         if (statret != 0 && fuzzy_basis) {
1711                 /* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
1712                 fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
1713                 if (fuzzy_file) {
1714                         f_name(fuzzy_file, fnamecmpbuf);
1715                         if (DEBUG_GTE(FUZZY, 1)) {
1716                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1717                                         fname, fnamecmpbuf);
1718                         }
1719                         sx.st.st_size = F_LENGTH(fuzzy_file);
1720                         statret = 0;
1721                         fnamecmp = fnamecmpbuf;
1722                 }
1723         }
1724
1725         if (statret != 0) {
1726 #ifdef SUPPORT_HARD_LINKS
1727                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1728                         cur_flist->in_progress++;
1729                         goto cleanup;
1730                 }
1731 #endif
1732                 if (stat_errno == ENOENT)
1733                         goto notify_others;
1734                 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1735                         full_fname(fname));
1736                 goto cleanup;
1737         }
1738
1739         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1740                 ;
1741         else if (fnamecmp_type == FNAMECMP_FUZZY)
1742                 ;
1743         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1744                 if (partialptr) {
1745                         do_unlink(partialptr);
1746                         handle_partial_dir(partialptr, PDIR_DELETE);
1747                 }
1748                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1749                 if (itemizing)
1750                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1751 #ifdef SUPPORT_HARD_LINKS
1752                 if (preserve_hard_links && F_IS_HLINKED(file))
1753                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1754 #endif
1755                 if (remove_source_files != 1)
1756                         goto cleanup;
1757           return_with_success:
1758                 if (!dry_run)
1759                         send_msg_int(MSG_SUCCESS, ndx);
1760                 goto cleanup;
1761         }
1762
1763         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1764 #ifdef SUPPORT_HARD_LINKS
1765                 if (F_IS_HLINKED(file))
1766                         handle_skipped_hlink(file, itemizing, code, f_out);
1767 #endif
1768                 goto cleanup;
1769         }
1770
1771   prepare_to_open:
1772         if (partialptr) {
1773                 sx.st = partial_st;
1774                 fnamecmp = partialptr;
1775                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1776                 statret = 0;
1777         }
1778
1779         if (!do_xfers)
1780                 goto notify_others;
1781
1782         if (read_batch || whole_file) {
1783                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1784                         if (!(backupptr = get_backup_name(fname)))
1785                                 goto cleanup;
1786                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1787                                 goto pretend_missing;
1788                         if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1789                                 unmake_file(back_file);
1790                                 back_file = NULL;
1791                                 goto cleanup;
1792                         }
1793                 }
1794                 goto notify_others;
1795         }
1796
1797         if (fuzzy_dirlist[0]) {
1798                 int j = flist_find(fuzzy_dirlist[0], file);
1799                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1800                         fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
1801         }
1802
1803         /* open the file */
1804         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1805                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1806                         full_fname(fnamecmp));
1807           pretend_missing:
1808                 /* pretend the file didn't exist */
1809 #ifdef SUPPORT_HARD_LINKS
1810                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1811                         cur_flist->in_progress++;
1812                         goto cleanup;
1813                 }
1814 #endif
1815                 statret = real_ret = -1;
1816                 goto notify_others;
1817         }
1818
1819         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1820                 if (!(backupptr = get_backup_name(fname))) {
1821                         close(fd);
1822                         goto cleanup;
1823                 }
1824                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1825                         close(fd);
1826                         goto pretend_missing;
1827                 }
1828                 if (robust_unlink(backupptr) && errno != ENOENT) {
1829                         rsyserr(FERROR_XFER, errno, "unlink %s",
1830                                 full_fname(backupptr));
1831                         unmake_file(back_file);
1832                         back_file = NULL;
1833                         close(fd);
1834                         goto cleanup;
1835                 }
1836                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1837                         rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1838                         unmake_file(back_file);
1839                         back_file = NULL;
1840                         close(fd);
1841                         goto cleanup;
1842                 }
1843                 fnamecmp_type = FNAMECMP_BACKUP;
1844         }
1845
1846         if (DEBUG_GTE(DELTASUM, 3)) {
1847                 rprintf(FINFO, "gen mapped %s of size %s\n",
1848                         fnamecmp, big_num(sx.st.st_size));
1849         }
1850
1851         if (DEBUG_GTE(DELTASUM, 2))
1852                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1853
1854   notify_others:
1855         if (remove_source_files && !delay_updates && !phase && !dry_run)
1856                 increment_active_files(ndx, itemizing, code);
1857         if (inc_recurse && (!dry_run || write_batch < 0))
1858                 cur_flist->in_progress++;
1859 #ifdef SUPPORT_HARD_LINKS
1860         if (preserve_hard_links && F_IS_HLINKED(file))
1861                 file->flags |= FLAG_FILE_SENT;
1862 #endif
1863         write_ndx(f_out, ndx);
1864         if (itemizing) {
1865                 int iflags = ITEM_TRANSFER;
1866                 if (always_checksum > 0)
1867                         iflags |= ITEM_REPORT_CHANGE;
1868                 if (fnamecmp_type != FNAMECMP_FNAME)
1869                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1870                 if (fnamecmp_type >= FNAMECMP_FUZZY)
1871                         iflags |= ITEM_XNAME_FOLLOWS;
1872                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1873                         fuzzy_file ? fuzzy_file->basename : NULL);
1874                 free_stat_x(&real_sx);
1875         }
1876
1877         if (!do_xfers) {
1878 #ifdef SUPPORT_HARD_LINKS
1879                 if (preserve_hard_links && F_IS_HLINKED(file))
1880                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1881 #endif
1882                 goto cleanup;
1883         }
1884         if (read_batch)
1885                 goto cleanup;
1886
1887         if (statret != 0 || whole_file)
1888                 write_sum_head(f_out, NULL);
1889         else if (sx.st.st_size <= 0) {
1890                 write_sum_head(f_out, NULL);
1891                 close(fd);
1892         } else {
1893                 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1894                         rprintf(FWARNING,
1895                             "WARNING: file is too large for checksum sending: %s\n",
1896                             fnamecmp);
1897                         write_sum_head(f_out, NULL);
1898                 }
1899                 close(fd);
1900         }
1901
1902   cleanup:
1903         if (back_file) {
1904                 int save_preserve_xattrs = preserve_xattrs;
1905                 if (f_copy >= 0)
1906                         close(f_copy);
1907 #ifdef SUPPORT_XATTRS
1908                 if (preserve_xattrs) {
1909                         copy_xattrs(fname, backupptr);
1910                         preserve_xattrs = 0;
1911                 }
1912 #endif
1913                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1914                 preserve_xattrs = save_preserve_xattrs;
1915                 if (INFO_GTE(BACKUP, 1)) {
1916                         rprintf(FINFO, "backed up %s to %s\n",
1917                                 fname, backupptr);
1918                 }
1919                 unmake_file(back_file);
1920         }
1921
1922         free_stat_x(&sx);
1923 }
1924
1925 /* If we are replacing an existing hard link, symlink, device, or special file,
1926  * create a temp-name item and rename it into place.  Only a symlink or hard
1927  * link puts a non-NULL value into the lnk arg.  Only a device puts a non-0
1928  * value into the rdev arg.  Specify 0 for the del_for_flag if there is not a
1929  * file to replace.  This returns 1 on success and 0 on failure. */
1930 int atomic_create(struct file_struct *file, char *fname, const char *lnk,
1931                   dev_t rdev, stat_x *sxp, int del_for_flag)
1932 {
1933         char tmpname[MAXPATHLEN];
1934         const char *create_name;
1935         int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1936
1937         if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1938                 skip_atomic = 1;
1939         else
1940                 skip_atomic = 0;
1941
1942         if (del_for_flag) {
1943                 if (make_backups > 0 && !dir_in_the_way) {
1944                         if (!make_backup(fname, skip_atomic))
1945                                 return 0;
1946                 } else if (skip_atomic) {
1947                         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1948                         if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1949                                 return 0;
1950                 }
1951         }
1952
1953         create_name = skip_atomic ? fname : tmpname;
1954
1955         if (lnk) {
1956 #ifdef SUPPORT_LINKS
1957                 if (S_ISLNK(file->mode)
1958 #ifdef SUPPORT_HARD_LINKS /* The first symlink in a hard-linked cluster is always created. */
1959                  && (!F_IS_HLINKED(file) || file->flags & FLAG_HLINK_FIRST)
1960 #endif
1961                  ) {
1962                         if (do_symlink(lnk, create_name) < 0) {
1963                                 rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1964                                         full_fname(create_name), lnk);
1965                                 return 0;
1966                         }
1967                 } else
1968 #endif
1969 #ifdef SUPPORT_HARD_LINKS
1970                 if (!hard_link_one(file, create_name, lnk, 0))
1971                         return 0;
1972 #endif
1973         } else {
1974                 if (do_mknod(create_name, file->mode, rdev) < 0) {
1975                         rsyserr(FERROR_XFER, errno, "mknod %s failed",
1976                                 full_fname(create_name));
1977                         return 0;
1978                 }
1979         }
1980
1981         if (!skip_atomic) {
1982                 if (do_rename(tmpname, fname) < 0) {
1983                         rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
1984                                 full_fname(tmpname), full_fname(fname));
1985                         do_unlink(tmpname);
1986                         return 0;
1987                 }
1988         }
1989
1990         return 1;
1991 }
1992
1993 #ifdef SUPPORT_HARD_LINKS
1994 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
1995                                  enum logcode code, int f_out)
1996 {
1997         char fbuf[MAXPATHLEN];
1998         int new_last_ndx;
1999         struct file_list *save_flist = cur_flist;
2000
2001         /* If we skip the last item in a chain of links and there was a
2002          * prior non-skipped hard-link waiting to finish, finish it now. */
2003         if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2004                 return;
2005
2006         file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2007         cur_flist->in_progress--; /* undo prior increment */
2008         f_name(file, fbuf);
2009         recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2010
2011         cur_flist = save_flist;
2012 }
2013 #endif
2014
2015 static void touch_up_dirs(struct file_list *flist, int ndx)
2016 {
2017         static int counter = 0;
2018         struct file_struct *file;
2019         char *fname;
2020         BOOL fix_dir_perms;
2021         int i, start, end;
2022
2023         if (ndx < 0) {
2024                 start = 0;
2025                 end = flist->used - 1;
2026         } else
2027                 start = end = ndx;
2028
2029         /* Fix any directory permissions that were modified during the
2030          * transfer and/or re-set any tweaked modified-time values. */
2031         for (i = start; i <= end; i++, counter++) {
2032                 file = flist->files[i];
2033                 if (!F_IS_ACTIVE(file))
2034                         continue;
2035                 if (!S_ISDIR(file->mode)
2036                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2037                         continue;
2038                 if (DEBUG_GTE(TIME, 2)) {
2039                         fname = f_name(file, NULL);
2040                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2041                                 NS(fname), i);
2042                 }
2043                 /* Be sure not to retouch permissions with --fake-super. */
2044                 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2045                 if (file->flags & FLAG_MISSING_DIR || !(need_retouch_dir_times || fix_dir_perms))
2046                         continue;
2047                 fname = f_name(file, NULL);
2048                 if (fix_dir_perms)
2049                         do_chmod(fname, file->mode);
2050                 if (need_retouch_dir_times) {
2051                         STRUCT_STAT st;
2052                         if (link_stat(fname, &st, 0) == 0
2053                          && cmp_time(st.st_mtime, file->modtime) != 0)
2054                                 set_modtime(fname, file->modtime, F_MOD_NSEC(file), file->mode);
2055                 }
2056                 if (counter >= loopchk_limit) {
2057                         if (allowed_lull)
2058                                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2059                         else
2060                                 maybe_flush_socket(0);
2061                         counter = 0;
2062                 }
2063         }
2064 }
2065
2066 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2067 {
2068         struct file_struct *file;
2069         struct file_list *flist;
2070         char fbuf[MAXPATHLEN];
2071         int ndx;
2072
2073         while (1) {
2074 #ifdef SUPPORT_HARD_LINKS
2075                 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2076                         int send_failed = (ndx == -2);
2077                         if (send_failed)
2078                                 ndx = get_hlink_num();
2079                         flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2080                         file = flist->files[ndx - flist->ndx_start];
2081                         assert(file->flags & FLAG_HLINKED);
2082                         if (send_failed)
2083                                 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2084                         else
2085                                 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2086                         flist->in_progress--;
2087                         continue;
2088                 }
2089 #endif
2090
2091                 if (check_redo && (ndx = get_redo_num()) != -1) {
2092                         OFF_T save_max_size = max_size;
2093                         OFF_T save_min_size = min_size;
2094                         csum_length = SUM_LENGTH;
2095                         max_size = -1;
2096                         min_size = -1;
2097                         ignore_existing = -ignore_existing;
2098                         ignore_non_existing = -ignore_non_existing;
2099                         update_only = -update_only;
2100                         always_checksum = -always_checksum;
2101                         size_only = -size_only;
2102                         append_mode = -append_mode;
2103                         make_backups = -make_backups; /* avoid dup backup w/inplace */
2104                         ignore_times++;
2105
2106                         flist = cur_flist;
2107                         cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2108
2109                         file = cur_flist->files[ndx - cur_flist->ndx_start];
2110                         if (solo_file)
2111                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2112                         else
2113                                 f_name(file, fbuf);
2114                         recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2115                         cur_flist->to_redo--;
2116
2117                         cur_flist = flist;
2118
2119                         csum_length = SHORT_SUM_LENGTH;
2120                         max_size = save_max_size;
2121                         min_size = save_min_size;
2122                         ignore_existing = -ignore_existing;
2123                         ignore_non_existing = -ignore_non_existing;
2124                         update_only = -update_only;
2125                         always_checksum = -always_checksum;
2126                         size_only = -size_only;
2127                         append_mode = -append_mode;
2128                         make_backups = -make_backups;
2129                         ignore_times--;
2130                         continue;
2131                 }
2132
2133                 if (cur_flist == first_flist)
2134                         break;
2135
2136                 /* We only get here if inc_recurse is enabled. */
2137                 if (first_flist->in_progress || first_flist->to_redo)
2138                         break;
2139
2140                 write_ndx(sock_f_out, NDX_DONE);
2141                 if (!read_batch && !flist_eof) {
2142                         int old_total = 0;
2143                         for (flist = first_flist; flist != cur_flist; flist = flist->next)
2144                                 old_total += flist->used;
2145                         maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2146                 }
2147
2148                 if (delete_during == 2 || !dir_tweaking) {
2149                         /* Skip directory touch-up. */
2150                 } else if (first_flist->parent_ndx >= 0)
2151                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
2152
2153                 flist_free(first_flist); /* updates first_flist */
2154         }
2155 }
2156
2157 void generate_files(int f_out, const char *local_name)
2158 {
2159         int i, ndx, next_loopchk = 0;
2160         char fbuf[MAXPATHLEN];
2161         int itemizing;
2162         enum logcode code;
2163         int save_info_flist = info_levels[INFO_FLIST];
2164         int save_info_progress = info_levels[INFO_PROGRESS];
2165
2166         if (protocol_version >= 29) {
2167                 itemizing = 1;
2168                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2169                 code = logfile_format_has_i ? FNONE : FLOG;
2170         } else if (am_daemon) {
2171                 itemizing = logfile_format_has_i && do_xfers;
2172                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2173                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2174         } else if (!am_server) {
2175                 itemizing = stdout_format_has_i;
2176                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2177                 code = itemizing ? FNONE : FINFO;
2178         } else {
2179                 itemizing = 0;
2180                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2181                 code = FINFO;
2182         }
2183         solo_file = local_name;
2184         dir_tweaking = !(list_only || solo_file || dry_run);
2185         need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2186         loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2187         symlink_timeset_failed_flags = ITEM_REPORT_TIME
2188             | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2189         implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2190
2191         if (DEBUG_GTE(GENR, 1))
2192                 rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
2193
2194         if (delete_before && !solo_file && cur_flist->used > 0)
2195                 do_delete_pass();
2196         if (delete_during == 2) {
2197                 deldelay_size = BIGPATHBUFLEN * 4;
2198                 deldelay_buf = new_array(char, deldelay_size);
2199                 if (!deldelay_buf)
2200                         out_of_memory("delete-delay");
2201         }
2202         info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2203
2204         if (append_mode > 0 || whole_file < 0)
2205                 whole_file = 0;
2206         if (DEBUG_GTE(FLIST, 1)) {
2207                 rprintf(FINFO, "delta-transmission %s\n",
2208                         whole_file
2209                         ? "disabled for local transfer or --whole-file"
2210                         : "enabled");
2211         }
2212
2213         dflt_perms = (ACCESSPERMS & ~orig_umask);
2214
2215         do {
2216 #ifdef SUPPORT_HARD_LINKS
2217                 if (preserve_hard_links && inc_recurse) {
2218                         while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2219                                 wait_for_receiver();
2220                 }
2221 #endif
2222
2223                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2224                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2225                         if (solo_file)
2226                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2227                         else
2228                                 f_name(fp, fbuf);
2229                         ndx = cur_flist->ndx_start - 1;
2230                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2231                         if (delete_during && dry_run < 2 && !list_only
2232                          && !(fp->flags & FLAG_MISSING_DIR)) {
2233                                 if (fp->flags & FLAG_CONTENT_DIR) {
2234                                         dev_t dirdev;
2235                                         if (one_file_system) {
2236                                                 uint32 *devp = F_DIR_DEV_P(fp);
2237                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2238                                         } else
2239                                                 dirdev = MAKEDEV(0, 0);
2240                                         delete_in_dir(fbuf, fp, &dirdev);
2241                                 } else
2242                                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2243                         }
2244                 }
2245                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2246                         struct file_struct *file = cur_flist->sorted[i];
2247
2248                         if (!F_IS_ACTIVE(file))
2249                                 continue;
2250
2251                         if (unsort_ndx)
2252                                 ndx = F_NDX(file);
2253                         else
2254                                 ndx = i + cur_flist->ndx_start;
2255
2256                         if (solo_file)
2257                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2258                         else
2259                                 f_name(file, fbuf);
2260                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2261
2262                         check_for_finished_files(itemizing, code, 0);
2263
2264                         if (i + cur_flist->ndx_start >= next_loopchk) {
2265                                 if (allowed_lull)
2266                                         maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2267                                 else
2268                                         maybe_flush_socket(0);
2269                                 next_loopchk += loopchk_limit;
2270                         }
2271                 }
2272
2273                 if (!inc_recurse) {
2274                         write_ndx(f_out, NDX_DONE);
2275                         break;
2276                 }
2277
2278                 while (1) {
2279                         check_for_finished_files(itemizing, code, 1);
2280                         if (cur_flist->next || flist_eof)
2281                                 break;
2282                         wait_for_receiver();
2283                 }
2284         } while ((cur_flist = cur_flist->next) != NULL);
2285
2286         if (delete_during)
2287                 delete_in_dir(NULL, NULL, &dev_zero);
2288         phase++;
2289         if (DEBUG_GTE(GENR, 1))
2290                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2291
2292         while (1) {
2293                 check_for_finished_files(itemizing, code, 1);
2294                 if (msgdone_cnt)
2295                         break;
2296                 wait_for_receiver();
2297         }
2298
2299         phase++;
2300         if (DEBUG_GTE(GENR, 1))
2301                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2302
2303         write_ndx(f_out, NDX_DONE);
2304
2305         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2306         if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2307                 write_ndx(f_out, NDX_DONE);
2308
2309         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2310                 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2311                         write_del_stats(f_out);
2312                 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2313                         write_ndx(f_out, NDX_DONE);
2314         }
2315
2316         /* Read MSG_DONE for the redo phase (and any prior messages). */
2317         while (1) {
2318                 check_for_finished_files(itemizing, code, 0);
2319                 if (msgdone_cnt > 1)
2320                         break;
2321                 wait_for_receiver();
2322         }
2323
2324         if (protocol_version >= 29) {
2325                 phase++;
2326                 if (DEBUG_GTE(GENR, 1))
2327                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2328                 if (!EARLY_DELAY_DONE_MSG()) {
2329                         write_ndx(f_out, NDX_DONE);
2330                         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2331                                 write_ndx(f_out, NDX_DONE);
2332                 }
2333                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2334                 while (msgdone_cnt == 2)
2335                         wait_for_receiver();
2336         }
2337
2338         info_levels[INFO_FLIST] = save_info_flist;
2339         info_levels[INFO_PROGRESS] = save_info_progress;
2340
2341         if (delete_during == 2)
2342                 do_delayed_deletions(fbuf);
2343         if (delete_after && !solo_file && file_total > 0)
2344                 do_delete_pass();
2345
2346         if (max_delete >= 0 && skipped_deletes) {
2347                 rprintf(FWARNING,
2348                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2349                         skipped_deletes);
2350                 io_error |= IOERR_DEL_LIMIT;
2351         }
2352
2353         if (protocol_version >= 31) {
2354                 if (!EARLY_DELETE_DONE_MSG()) {
2355                         if (INFO_GTE(STATS, 2) || read_batch)
2356                                 write_del_stats(f_out);
2357                         write_ndx(f_out, NDX_DONE);
2358                 }
2359
2360                 /* Read MSG_DONE for late-delete phase & prior messages. */
2361                 while (msgdone_cnt == 3)
2362                         wait_for_receiver();
2363         }
2364
2365         if ((need_retouch_dir_perms || need_retouch_dir_times)
2366          && dir_tweaking && (!inc_recurse || delete_during == 2))
2367                 touch_up_dirs(dir_flist, -1);
2368
2369         if (DEBUG_GTE(GENR, 1))
2370                 rprintf(FINFO, "generate_files finished\n");
2371 }