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) 2003-2009 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
  25 extern int verbose;
  26 extern int dry_run;
  27 extern int do_xfers;
  28 extern int stdout_format_has_i;
  29 extern int logfile_format_has_i;
  30 extern int am_root;
  31 extern int am_server;
  32 extern int am_daemon;
  33 extern int inc_recurse;
  34 extern int do_progress;
  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 msgdone_cnt;
  52 extern int ignore_errors;
  53 extern int remove_source_files;
  54 extern int delay_updates;
  55 extern int update_only;
  56 extern int ignore_existing;
  57 extern int ignore_non_existing;
  58 extern int inplace;
  59 extern int append_mode;
  60 extern int make_backups;
  61 extern int csum_length;
  62 extern int ignore_times;
  63 extern int size_only;
  64 extern OFF_T max_size;
  65 extern OFF_T min_size;
  66 extern int io_error;
  67 extern int flist_eof;
  68 extern int allowed_lull;
  69 extern int sock_f_out;
  70 extern int ignore_timeout;
  71 extern int protocol_version;
  72 extern int file_total;
  73 extern int fuzzy_basis;
  74 extern int always_checksum;
  75 extern int checksum_len;
  76 extern char *partial_dir;
  77 extern char *basis_dir[MAX_BASIS_DIRS+1];
  78 extern int compare_dest;
  79 extern int copy_dest;
  80 extern int link_dest;
  81 extern int whole_file;
  82 extern int list_only;
  83 extern int read_batch;
  84 extern int safe_symlinks;
  85 extern long block_size; /* "long" because popt can't set an int32. */
  86 extern int unsort_ndx;
  87 extern int max_delete;
  88 extern int force_delete;
  89 extern int one_file_system;
  90 extern struct stats stats;
  91 extern dev_t filesystem_dev;
  92 extern mode_t orig_umask;
  93 extern uid_t our_uid;
  94 extern char *backup_dir;
  95 extern char *backup_suffix;
  96 extern int backup_suffix_len;
  97 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  98 extern struct filter_list_struct daemon_filter_list;
  99
 100 int ignore_perishable = 0;
 101 int non_perishable_cnt = 0;
 102 int maybe_ATTRS_REPORT = 0;
 103
 104 static dev_t dev_zero;
 105 static int deletion_count = 0; /* used to implement --max-delete */
 106 static int deldelay_size = 0, deldelay_cnt = 0;
 107 static char *deldelay_buf = NULL;
 108 static int deldelay_fd = -1;
 109 static int loopchk_limit;
 110 static int dir_tweaking;
 111 static int symlink_timeset_failed_flags;
 112 static int need_retouch_dir_times;
 113 static int need_retouch_dir_perms;
 114 static const char *solo_file = NULL;
 115
 116 /* For calling delete_item() and delete_dir_contents(). */
 117 #define DEL_NO_UID_WRITE        (1<<0) /* file/dir has our uid w/o write perm */
 118 #define DEL_RECURSE             (1<<1) /* if dir, delete all contents */
 119 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 120 #define DEL_FOR_FILE            (1<<3) /* making room for a replacement file */
 121 #define DEL_FOR_DIR             (1<<4) /* making room for a replacement dir */
 122 #define DEL_FOR_SYMLINK         (1<<5) /* making room for a replacement symlink */
 123 #define DEL_FOR_DEVICE          (1<<6) /* making room for a replacement device */
 124 #define DEL_FOR_SPECIAL         (1<<7) /* making room for a replacement special */
 125
 126 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
 127
 128 enum nonregtype {
 129     TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
 130 };
 131
 132 enum delret {
 133     DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 134 };
 135
 136 /* Forward declarations. */
 137 static enum delret delete_dir_contents(char *fname, uint16 flags);
 138 #ifdef SUPPORT_HARD_LINKS
 139 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
 140                                  enum logcode code, int f_out);
 141 #endif
 142
 143 static int is_backup_file(char *fn)
 144 {
 145         int k = strlen(fn) - backup_suffix_len;
 146         return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 147 }
 148
 149 /* Delete a file or directory.  If DEL_RECURSE is set in the flags, this will
 150  * delete recursively.
 151  *
 152  * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
 153  * a directory! (The buffer is used for recursion, but returned unchanged.)
 154  */
 155 static enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
 156 {
 157         enum delret ret;
 158         char *what;
 159         int ok;
 160
 161         if (verbose > 2) {
 162                 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
 163                         fbuf, (int)mode, (int)flags);
 164         }
 165
 166         if (flags & DEL_NO_UID_WRITE)
 167                 do_chmod(fbuf, mode | S_IWUSR);
 168
 169         if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
 170                 /* This only happens on the first call to delete_item() since
 171                  * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
 172                 ignore_perishable = 1;
 173                 /* If DEL_RECURSE is not set, this just reports emptiness. */
 174                 ret = delete_dir_contents(fbuf, flags);
 175                 ignore_perishable = 0;
 176                 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
 177                         goto check_ret;
 178                 /* OK: try to delete the directory. */
 179         }
 180
 181         if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && ++deletion_count > max_delete)
 182                 return DR_AT_LIMIT;
 183
 184         if (S_ISDIR(mode)) {
 185                 what = "rmdir";
 186                 ok = do_rmdir(fbuf) == 0;
 187         } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
 188                 what = "make_backup";
 189                 ok = make_backup(fbuf);
 190         } else {
 191                 what = "unlink";
 192                 ok = robust_unlink(fbuf) == 0;
 193         }
 194
 195         if (ok) {
 196                 if (!(flags & DEL_MAKE_ROOM))
 197                         log_delete(fbuf, mode);
 198                 ret = DR_SUCCESS;
 199         } else {
 200                 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
 201                         rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 202                                 fbuf);
 203                         ret = DR_NOT_EMPTY;
 204                 } else if (errno != ENOENT) {
 205                         rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
 206                                 what, fbuf);
 207                         ret = DR_FAILURE;
 208                 } else {
 209                         deletion_count--;
 210                         ret = DR_SUCCESS;
 211                 }
 212         }
 213
 214   check_ret:
 215         if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
 216                 const char *desc;
 217                 switch (flags & DEL_MAKE_ROOM) {
 218                 case DEL_FOR_FILE: desc = "regular file"; break;
 219                 case DEL_FOR_DIR: desc = "directory"; break;
 220                 case DEL_FOR_SYMLINK: desc = "symlink"; break;
 221                 case DEL_FOR_DEVICE: desc = "device file"; break;
 222                 case DEL_FOR_SPECIAL: desc = "special file"; break;
 223                 default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
 224                 }
 225                 rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
 226                         desc, fbuf);
 227         }
 228         return ret;
 229 }
 230
 231 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
 232  * its contents, otherwise just checks for content.  Returns DR_SUCCESS or
 233  * DR_NOT_EMPTY.  Note that fname must point to a MAXPATHLEN buffer!  (The
 234  * buffer is used for recursion, but returned unchanged.)
 235  */
 236 static enum delret delete_dir_contents(char *fname, uint16 flags)
 237 {
 238         struct file_list *dirlist;
 239         enum delret ret;
 240         unsigned remainder;
 241         void *save_filters;
 242         int j, dlen;
 243         char *p;
 244
 245         if (verbose > 3) {
 246                 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
 247                         fname, flags);
 248         }
 249
 250         dlen = strlen(fname);
 251         save_filters = push_local_filters(fname, dlen);
 252
 253         non_perishable_cnt = 0;
 254         dirlist = get_dirlist(fname, dlen, 0);
 255         ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
 256
 257         if (!dirlist->used)
 258                 goto done;
 259
 260         if (!(flags & DEL_RECURSE)) {
 261                 ret = DR_NOT_EMPTY;
 262                 goto done;
 263         }
 264
 265         p = fname + dlen;
 266         if (dlen != 1 || *fname != '/')
 267                 *p++ = '/';
 268         remainder = MAXPATHLEN - (p - fname);
 269
 270         /* We do our own recursion, so make delete_item() non-recursive. */
 271         flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
 272               | DEL_DIR_IS_EMPTY;
 273
 274         for (j = dirlist->used; j--; ) {
 275                 struct file_struct *fp = dirlist->files[j];
 276
 277                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 278                         if (verbose > 1) {
 279                                 rprintf(FINFO,
 280                                     "mount point, %s, pins parent directory\n",
 281                                     f_name(fp, NULL));
 282                         }
 283                         ret = DR_NOT_EMPTY;
 284                         continue;
 285                 }
 286
 287                 strlcpy(p, fp->basename, remainder);
 288                 if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
 289                         do_chmod(fname, fp->mode | S_IWUSR);
 290                 /* Save stack by recursing to ourself directly. */
 291                 if (S_ISDIR(fp->mode)) {
 292                         if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
 293                                 ret = DR_NOT_EMPTY;
 294                 }
 295                 if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
 296                         ret = DR_NOT_EMPTY;
 297         }
 298
 299         fname[dlen] = '\0';
 300
 301   done:
 302         flist_free(dirlist);
 303         pop_local_filters(save_filters);
 304
 305         if (ret == DR_NOT_EMPTY) {
 306                 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 307                         fname);
 308         }
 309         return ret;
 310 }
 311
 312 static int start_delete_delay_temp(void)
 313 {
 314         char fnametmp[MAXPATHLEN];
 315         int save_dry_run = dry_run;
 316
 317         dry_run = 0;
 318         if (!get_tmpname(fnametmp, "deldelay")
 319          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 320                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 321                         inc_recurse ? "" : " -- switching to --delete-after");
 322                 delete_during = 0;
 323                 delete_after = !inc_recurse;
 324                 dry_run = save_dry_run;
 325                 return 0;
 326         }
 327         unlink(fnametmp);
 328         dry_run = save_dry_run;
 329         return 1;
 330 }
 331
 332 static int flush_delete_delay(void)
 333 {
 334         if (deldelay_fd < 0 && !start_delete_delay_temp())
 335                 return 0;
 336         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 337                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 338                 delete_during = 0;
 339                 delete_after = !inc_recurse;
 340                 close(deldelay_fd);
 341                 return 0;
 342         }
 343         deldelay_cnt = 0;
 344         return 1;
 345 }
 346
 347 static int remember_delete(struct file_struct *file, const char *fname, int flags)
 348 {
 349         int len;
 350
 351         if (deldelay_cnt == deldelay_size && !flush_delete_delay())
 352                 return 0;
 353
 354         if (flags & DEL_NO_UID_WRITE)
 355                 deldelay_buf[deldelay_cnt++] = '!';
 356
 357         while (1) {
 358                 len = snprintf(deldelay_buf + deldelay_cnt,
 359                                deldelay_size - deldelay_cnt,
 360                                "%x %s%c",
 361                                (int)file->mode, fname, '\0');
 362                 if ((deldelay_cnt += len) <= deldelay_size)
 363                         break;
 364                 deldelay_cnt -= len;
 365                 if (!flush_delete_delay())
 366                         return 0;
 367         }
 368
 369         return 1;
 370 }
 371
 372 static int read_delay_line(char *buf, int *flags_p)
 373 {
 374         static int read_pos = 0;
 375         int j, len, mode;
 376         char *bp, *past_space;
 377
 378         while (1) {
 379                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 380                 if (j < deldelay_cnt)
 381                         break;
 382                 if (deldelay_fd < 0) {
 383                         if (j > read_pos)
 384                                 goto invalid_data;
 385                         return -1;
 386                 }
 387                 deldelay_cnt -= read_pos;
 388                 if (deldelay_cnt == deldelay_size)
 389                         goto invalid_data;
 390                 if (deldelay_cnt && read_pos) {
 391                         memmove(deldelay_buf, deldelay_buf + read_pos,
 392                                 deldelay_cnt);
 393                 }
 394                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 395                            deldelay_size - deldelay_cnt);
 396                 if (len == 0) {
 397                         if (deldelay_cnt) {
 398                                 rprintf(FERROR,
 399                                     "ERROR: unexpected EOF in delete-delay file.\n");
 400                         }
 401                         return -1;
 402                 }
 403                 if (len < 0) {
 404                         rsyserr(FERROR, errno,
 405                                 "reading delete-delay file");
 406                         return -1;
 407                 }
 408                 deldelay_cnt += len;
 409                 read_pos = 0;
 410         }
 411
 412         bp = deldelay_buf + read_pos;
 413         if (*bp == '!') {
 414                 bp++;
 415                 *flags_p = DEL_NO_UID_WRITE;
 416         } else
 417                 *flags_p = 0;
 418
 419         if (sscanf(bp, "%x ", &mode) != 1) {
 420           invalid_data:
 421                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 422                 return -1;
 423         }
 424         past_space = strchr(bp, ' ') + 1;
 425         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 426         read_pos = j + 1;
 427
 428         if (len > MAXPATHLEN) {
 429                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 430                 return -1;
 431         }
 432
 433         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 434          * instead of returning a pointer to our buffer. */
 435         memcpy(buf, past_space, len);
 436
 437         return mode;
 438 }
 439
 440 static void do_delayed_deletions(char *delbuf)
 441 {
 442         int mode, flags;
 443
 444         if (deldelay_fd >= 0) {
 445                 if (deldelay_cnt && !flush_delete_delay())
 446                         return;
 447                 lseek(deldelay_fd, 0, 0);
 448         }
 449         while ((mode = read_delay_line(delbuf, &flags)) >= 0)
 450                 delete_item(delbuf, mode, flags | DEL_RECURSE);
 451         if (deldelay_fd >= 0)
 452                 close(deldelay_fd);
 453 }
 454
 455 /* This function is used to implement per-directory deletion, and is used by
 456  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 457  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 458  * call will append names onto the end, but the old dir value will be restored
 459  * on exit). */
 460 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 461 {
 462         static int already_warned = 0;
 463         struct file_list *dirlist;
 464         char delbuf[MAXPATHLEN];
 465         int dlen, i;
 466
 467         if (!fbuf) {
 468                 change_local_filter_dir(NULL, 0, 0);
 469                 return;
 470         }
 471
 472         if (verbose > 2)
 473                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 474
 475         if (allowed_lull)
 476                 maybe_send_keepalive();
 477
 478         if (io_error && !ignore_errors) {
 479                 if (already_warned)
 480                         return;
 481                 rprintf(FINFO,
 482                         "IO error encountered -- skipping file deletion\n");
 483                 already_warned = 1;
 484                 return;
 485         }
 486
 487         dlen = strlen(fbuf);
 488         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 489
 490         if (one_file_system) {
 491                 if (file->flags & FLAG_TOP_DIR)
 492                         filesystem_dev = *fs_dev;
 493                 else if (filesystem_dev != *fs_dev)
 494                         return;
 495         }
 496
 497         dirlist = get_dirlist(fbuf, dlen, 0);
 498
 499         /* If an item in dirlist is not found in flist, delete it
 500          * from the filesystem. */
 501         for (i = dirlist->used; i--; ) {
 502                 struct file_struct *fp = dirlist->files[i];
 503                 if (!F_IS_ACTIVE(fp))
 504                         continue;
 505                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 506                         if (verbose > 1)
 507                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 508                                         f_name(fp, NULL));
 509                         continue;
 510                 }
 511                 /* Here we want to match regardless of file type.  Replacement
 512                  * of a file with one of another type is handled separately by
 513                  * a delete_item call with a DEL_MAKE_ROOM flag. */
 514                 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
 515                         int flags = DEL_RECURSE;
 516                         if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
 517                                 flags |= DEL_NO_UID_WRITE;
 518                         f_name(fp, delbuf);
 519                         if (delete_during == 2) {
 520                                 if (!remember_delete(fp, delbuf, flags))
 521                                         break;
 522                         } else
 523                                 delete_item(delbuf, fp->mode, flags);
 524                 }
 525         }
 526
 527         flist_free(dirlist);
 528 }
 529
 530 /* This deletes any files on the receiving side that are not present on the
 531  * sending side.  This is used by --delete-before and --delete-after. */
 532 static void do_delete_pass(void)
 533 {
 534         char fbuf[MAXPATHLEN];
 535         STRUCT_STAT st;
 536         int j;
 537
 538         /* dry_run is incremented when the destination doesn't exist yet. */
 539         if (dry_run > 1 || list_only)
 540                 return;
 541
 542         for (j = 0; j < cur_flist->used; j++) {
 543                 struct file_struct *file = cur_flist->sorted[j];
 544
 545                 f_name(file, fbuf);
 546
 547                 if (!(file->flags & FLAG_CONTENT_DIR)) {
 548                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
 549                         continue;
 550                 }
 551
 552                 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
 553                         rprintf(FINFO, "deleting in %s\n", fbuf);
 554
 555                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 556                  || !S_ISDIR(st.st_mode))
 557                         continue;
 558
 559                 delete_in_dir(fbuf, file, &st.st_dev);
 560         }
 561         delete_in_dir(NULL, NULL, &dev_zero);
 562
 563         if (do_progress && !am_server)
 564                 rprintf(FINFO, "                    \r");
 565 }
 566
 567 static inline int time_differs(struct file_struct *file, stat_x *sxp)
 568 {
 569         return cmp_time(sxp->st.st_mtime, file->modtime);
 570 }
 571
 572 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
 573 {
 574         if (preserve_perms)
 575                 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
 576
 577         if (preserve_executability)
 578                 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
 579
 580         return 0;
 581 }
 582
 583 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
 584 {
 585         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 586                 return 1;
 587
 588         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 589                 return 1;
 590
 591         return 0;
 592 }
 593
 594 #ifdef SUPPORT_ACLS
 595 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 596 {
 597         if (preserve_acls) {
 598                 if (!ACL_READY(*sxp))
 599                         get_acl(fname, sxp);
 600                 if (set_acl(NULL, file, sxp, file->mode))
 601                         return 1;
 602         }
 603
 604         return 0;
 605 }
 606 #endif
 607
 608 #ifdef SUPPORT_XATTRS
 609 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 610 {
 611         if (preserve_xattrs) {
 612                 if (!XATTR_READY(*sxp))
 613                         get_xattr(fname, sxp);
 614                 if (xattr_diff(file, sxp, 0))
 615                         return 1;
 616         }
 617
 618         return 0;
 619 }
 620 #endif
 621
 622 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 623 {
 624         if (S_ISLNK(file->mode)) {
 625 #ifdef CAN_SET_SYMLINK_TIMES
 626                 if (preserve_times & PRESERVE_LINK_TIMES && time_differs(file, sxp))
 627                         return 0;
 628 #endif
 629 #ifdef CAN_CHMOD_SYMLINK
 630                 if (perms_differ(file, sxp))
 631                         return 0;
 632 #endif
 633 #ifdef CAN_CHOWN_SYMLINK
 634                 if (ownership_differs(file, sxp))
 635                         return 0;
 636 #endif
 637 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
 638                 if (acls_differ(fname, file, sxp))
 639                         return 0;
 640 #endif
 641 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
 642                 if (xattrs_differ(fname, file, sxp))
 643                         return 0;
 644 #endif
 645         } else {
 646                 if (preserve_times && time_differs(file, sxp))
 647                         return 0;
 648                 if (perms_differ(file, sxp))
 649                         return 0;
 650                 if (ownership_differs(file, sxp))
 651                         return 0;
 652 #ifdef SUPPORT_ACLS
 653                 if (acls_differ(fname, file, sxp))
 654                         return 0;
 655 #endif
 656 #ifdef SUPPORT_XATTRS
 657                 if (xattrs_differ(fname, file, sxp))
 658                         return 0;
 659 #endif
 660         }
 661
 662         return 1;
 663 }
 664
 665 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 666              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 667              const char *xname)
 668 {
 669         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 670                 int keep_time = !preserve_times ? 0
 671                     : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
 672                     : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
 673                     : 1;
 674
 675                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 676                         iflags |= ITEM_REPORT_SIZE;
 677                 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
 678                         if (iflags & ITEM_LOCAL_CHANGE)
 679                                 iflags |= symlink_timeset_failed_flags;
 680                 } else if (keep_time
 681                  ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
 682                  : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
 683                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 684                         iflags |= ITEM_REPORT_TIME;
 685 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 686                 if (S_ISLNK(file->mode)) {
 687                         ;
 688                 } else
 689 #endif
 690                 if (preserve_perms) {
 691                         if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 692                                 iflags |= ITEM_REPORT_PERMS;
 693                 } else if (preserve_executability
 694                  && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 695                         iflags |= ITEM_REPORT_PERMS;
 696                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 697                         iflags |= ITEM_REPORT_OWNER;
 698                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 699                     && sxp->st.st_gid != (gid_t)F_GROUP(file))
 700                         iflags |= ITEM_REPORT_GROUP;
 701 #ifdef SUPPORT_ACLS
 702                 if (preserve_acls && !S_ISLNK(file->mode)) {
 703                         if (!ACL_READY(*sxp))
 704                                 get_acl(fnamecmp, sxp);
 705                         if (set_acl(NULL, file, sxp, file->mode))
 706                                 iflags |= ITEM_REPORT_ACL;
 707                 }
 708 #endif
 709 #ifdef SUPPORT_XATTRS
 710                 if (preserve_xattrs) {
 711                         if (!XATTR_READY(*sxp))
 712                                 get_xattr(fnamecmp, sxp);
 713                         if (xattr_diff(file, sxp, 1))
 714                                 iflags |= ITEM_REPORT_XATTR;
 715                 }
 716 #endif
 717         } else {
 718 #ifdef SUPPORT_XATTRS
 719                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 720                         iflags |= ITEM_REPORT_XATTR;
 721 #endif
 722                 iflags |= ITEM_IS_NEW;
 723         }
 724
 725         iflags &= 0xffff;
 726         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || verbose > 1
 727           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 728                 if (protocol_version >= 29) {
 729                         if (ndx >= 0)
 730                                 write_ndx(sock_f_out, ndx);
 731                         write_shortint(sock_f_out, iflags);
 732                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 733                                 write_byte(sock_f_out, fnamecmp_type);
 734                         if (iflags & ITEM_XNAME_FOLLOWS)
 735                                 write_vstring(sock_f_out, xname, strlen(xname));
 736 #ifdef SUPPORT_XATTRS
 737                         if (preserve_xattrs && do_xfers
 738                          && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
 739                                 send_xattr_request(NULL, file,
 740                                         iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
 741                         }
 742 #endif
 743                 } else if (ndx >= 0) {
 744                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 745                         log_item(code, file, &stats, iflags, xname);
 746                 }
 747         }
 748 }
 749
 750
 751 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 752 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 753 {
 754         if (st->st_size != F_LENGTH(file))
 755                 return 0;
 756
 757         /* if always checksum is set then we use the checksum instead
 758            of the file time to determine whether to sync */
 759         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 760                 char sum[MAX_DIGEST_LEN];
 761                 file_checksum(fn, sum, st->st_size);
 762                 return memcmp(sum, F_SUM(file), checksum_len) == 0;
 763         }
 764
 765         if (size_only > 0)
 766                 return 1;
 767
 768         if (ignore_times)
 769                 return 0;
 770
 771         return cmp_time(st->st_mtime, file->modtime) == 0;
 772 }
 773
 774
 775 /*
 776  * set (initialize) the size entries in the per-file sum_struct
 777  * calculating dynamic block and checksum sizes.
 778  *
 779  * This is only called from generate_and_send_sums() but is a separate
 780  * function to encapsulate the logic.
 781  *
 782  * The block size is a rounded square root of file length.
 783  *
 784  * The checksum size is determined according to:
 785  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 786  * provided by Donovan Baarda which gives a probability of rsync
 787  * algorithm corrupting data and falling back using the whole md4
 788  * checksums.
 789  *
 790  * This might be made one of several selectable heuristics.
 791  */
 792 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 793 {
 794         int32 blength;
 795         int s2length;
 796         int64 l;
 797
 798         if (len < 0) {
 799                 /* The file length overflowed our int64 var, so we can't process this file. */
 800                 sum->count = -1; /* indicate overflow error */
 801                 return;
 802         }
 803
 804         if (block_size)
 805                 blength = block_size;
 806         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 807                 blength = BLOCK_SIZE;
 808         else {
 809                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
 810                 int32 c;
 811                 int cnt;
 812                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 813                 if (c < 0 || c >= max_blength)
 814                         blength = max_blength;
 815                 else {
 816                     blength = 0;
 817                     do {
 818                             blength |= c;
 819                             if (len < (int64)blength * blength)
 820                                     blength &= ~c;
 821                             c >>= 1;
 822                     } while (c >= 8);   /* round to multiple of 8 */
 823                     blength = MAX(blength, BLOCK_SIZE);
 824                 }
 825         }
 826
 827         if (protocol_version < 27) {
 828                 s2length = csum_length;
 829         } else if (csum_length == SUM_LENGTH) {
 830                 s2length = SUM_LENGTH;
 831         } else {
 832                 int32 c;
 833                 int b = BLOCKSUM_BIAS;
 834                 for (l = len; l >>= 1; b += 2) {}
 835                 for (c = blength; (c >>= 1) && b; b--) {}
 836                 /* add a bit, subtract rollsum, round up. */
 837                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 838                 s2length = MAX(s2length, csum_length);
 839                 s2length = MIN(s2length, SUM_LENGTH);
 840         }
 841
 842         sum->flength    = len;
 843         sum->blength    = blength;
 844         sum->s2length   = s2length;
 845         sum->remainder  = (int32)(len % blength);
 846         sum->count      = (int32)(l = (len / blength) + (sum->remainder != 0));
 847
 848         if ((int64)sum->count != l)
 849                 sum->count = -1;
 850
 851         if (sum->count && verbose > 2) {
 852                 rprintf(FINFO,
 853                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 854                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 855                         sum->s2length, (double)sum->flength);
 856         }
 857 }
 858
 859
 860 /*
 861  * Generate and send a stream of signatures/checksums that describe a buffer
 862  *
 863  * Generate approximately one checksum every block_len bytes.
 864  */
 865 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 866 {
 867         int32 i;
 868         struct map_struct *mapbuf;
 869         struct sum_struct sum;
 870         OFF_T offset = 0;
 871
 872         sum_sizes_sqroot(&sum, len);
 873         if (sum.count < 0)
 874                 return -1;
 875         write_sum_head(f_out, &sum);
 876
 877         if (append_mode > 0 && f_copy < 0)
 878                 return 0;
 879
 880         if (len > 0)
 881                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 882         else
 883                 mapbuf = NULL;
 884
 885         for (i = 0; i < sum.count; i++) {
 886                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 887                 char *map = map_ptr(mapbuf, offset, n1);
 888                 char sum2[SUM_LENGTH];
 889                 uint32 sum1;
 890
 891                 len -= n1;
 892                 offset += n1;
 893
 894                 if (f_copy >= 0) {
 895                         full_write(f_copy, map, n1);
 896                         if (append_mode > 0)
 897                                 continue;
 898                 }
 899
 900                 sum1 = get_checksum1(map, n1);
 901                 get_checksum2(map, n1, sum2);
 902
 903                 if (verbose > 3) {
 904                         rprintf(FINFO,
 905                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 906                                 (double)i, (double)offset - n1, (long)n1,
 907                                 (unsigned long)sum1);
 908                 }
 909                 write_int(f_out, sum1);
 910                 write_buf(f_out, sum2, sum.s2length);
 911         }
 912
 913         if (mapbuf)
 914                 unmap_file(mapbuf);
 915
 916         return 0;
 917 }
 918
 919
 920 /* Try to find a filename in the same dir as "fname" with a similar name. */
 921 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 922 {
 923         int fname_len, fname_suf_len;
 924         const char *fname_suf, *fname = file->basename;
 925         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 926         int j, lowest_j = -1;
 927
 928         fname_len = strlen(fname);
 929         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 930
 931         for (j = 0; j < dirlist->used; j++) {
 932                 struct file_struct *fp = dirlist->files[j];
 933                 const char *suf, *name;
 934                 int len, suf_len;
 935                 uint32 dist;
 936
 937                 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
 938                  || fp->flags & FLAG_FILE_SENT)
 939                         continue;
 940
 941                 name = fp->basename;
 942
 943                 if (F_LENGTH(fp) == F_LENGTH(file)
 944                     && cmp_time(fp->modtime, file->modtime) == 0) {
 945                         if (verbose > 4) {
 946                                 rprintf(FINFO,
 947                                         "fuzzy size/modtime match for %s\n",
 948                                         name);
 949                         }
 950                         return j;
 951                 }
 952
 953                 len = strlen(name);
 954                 suf = find_filename_suffix(name, len, &suf_len);
 955
 956                 dist = fuzzy_distance(name, len, fname, fname_len);
 957                 /* Add some extra weight to how well the suffixes match. */
 958                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 959                       * 10;
 960                 if (verbose > 4) {
 961                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 962                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 963                 }
 964                 if (dist <= lowest_dist) {
 965                         lowest_dist = dist;
 966                         lowest_j = j;
 967                 }
 968         }
 969
 970         return lowest_j;
 971 }
 972
 973 /* Copy a file found in our --copy-dest handling. */
 974 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 975 {
 976         char buf[MAXPATHLEN];
 977         const char *copy_to, *partialptr;
 978         int save_preserve_xattrs = preserve_xattrs;
 979         int ok, fd_w;
 980
 981         if (inplace) {
 982                 /* Let copy_file open the destination in place. */
 983                 fd_w = -1;
 984                 copy_to = dest;
 985         } else {
 986                 fd_w = open_tmpfile(buf, dest, file);
 987                 if (fd_w < 0)
 988                         return -1;
 989                 copy_to = buf;
 990         }
 991         cleanup_set(copy_to, NULL, NULL, -1, -1);
 992         if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
 993                 if (verbose) {
 994                         rsyserr(FINFO, errno, "copy_file %s => %s",
 995                                 full_fname(src), copy_to);
 996                 }
 997                 /* Try to clean up. */
 998                 unlink(copy_to);
 999                 cleanup_disable();
1000                 return -1;
1001         }
1002         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
1003         preserve_xattrs = 0; /* xattrs were copied with file */
1004         ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
1005         preserve_xattrs = save_preserve_xattrs;
1006         cleanup_disable();
1007         return ok ? 0 : -1;
1008 }
1009
1010 /* This is only called for regular files.  We return -2 if we've finished
1011  * handling the file, -1 if no dest-linking occurred, or a non-negative
1012  * value if we found an alternate basis file. */
1013 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
1014                          char *cmpbuf, stat_x *sxp, int itemizing,
1015                          enum logcode code)
1016 {
1017         int best_match = -1;
1018         int match_level = 0;
1019         int j = 0;
1020
1021         do {
1022                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1023                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
1024                         continue;
1025                 switch (match_level) {
1026                 case 0:
1027                         best_match = j;
1028                         match_level = 1;
1029                         /* FALL THROUGH */
1030                 case 1:
1031                         if (!unchanged_file(cmpbuf, file, &sxp->st))
1032                                 continue;
1033                         best_match = j;
1034                         match_level = 2;
1035                         /* FALL THROUGH */
1036                 case 2:
1037                         if (!unchanged_attrs(cmpbuf, file, sxp))
1038                                 continue;
1039                         best_match = j;
1040                         match_level = 3;
1041                         break;
1042                 }
1043                 break;
1044         } while (basis_dir[++j] != NULL);
1045
1046         if (!match_level)
1047                 return -1;
1048
1049         if (j != best_match) {
1050                 j = best_match;
1051                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1052                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1053                         return -1;
1054         }
1055
1056         if (match_level == 3 && !copy_dest) {
1057 #ifdef SUPPORT_HARD_LINKS
1058                 if (link_dest) {
1059                         if (!hard_link_one(file, fname, cmpbuf, 1))
1060                                 goto try_a_copy;
1061                         if (preserve_hard_links && F_IS_HLINKED(file))
1062                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1063                         if (!maybe_ATTRS_REPORT && (verbose > 1 || stdout_format_has_i > 1)) {
1064                                 itemize(cmpbuf, file, ndx, 1, sxp,
1065                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1066                                         0, "");
1067                         }
1068                 } else
1069 #endif
1070                 if (itemizing)
1071                         itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1072                 if (verbose > 1 && maybe_ATTRS_REPORT)
1073                         rprintf(FCLIENT, "%s is uptodate\n", fname);
1074                 return -2;
1075         }
1076
1077         if (match_level >= 2) {
1078 #ifdef SUPPORT_HARD_LINKS
1079           try_a_copy: /* Copy the file locally. */
1080 #endif
1081                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1082                         return -1;
1083                 if (itemizing)
1084                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1085                 if (maybe_ATTRS_REPORT
1086                  && ((!itemizing && verbose && match_level == 2)
1087                   || (verbose > 1 && match_level == 3))) {
1088                         code = match_level == 3 ? FCLIENT : FINFO;
1089                         rprintf(code, "%s%s\n", fname,
1090                                 match_level == 3 ? " is uptodate" : "");
1091                 }
1092 #ifdef SUPPORT_HARD_LINKS
1093                 if (preserve_hard_links && F_IS_HLINKED(file))
1094                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1095 #endif
1096                 return -2;
1097         }
1098
1099         return FNAMECMP_BASIS_DIR_LOW + j;
1100 }
1101
1102 /* This is only called for non-regular files.  We return -2 if we've finished
1103  * handling the file, or -1 if no dest-linking occurred, or a non-negative
1104  * value if we found an alternate basis file. */
1105 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1106                          char *cmpbuf, stat_x *sxp, int itemizing,
1107                          enum logcode code)
1108 {
1109         char lnk[MAXPATHLEN];
1110         int best_match = -1;
1111         int match_level = 0;
1112         enum nonregtype type;
1113         uint32 *devp;
1114         int len, j = 0;
1115
1116 #ifndef SUPPORT_LINKS
1117         if (S_ISLNK(file->mode))
1118                 return -1;
1119 #endif
1120         if (S_ISDIR(file->mode)) {
1121                 type = TYPE_DIR;
1122         } else if (IS_SPECIAL(file->mode))
1123                 type = TYPE_SPECIAL;
1124         else if (IS_DEVICE(file->mode))
1125                 type = TYPE_DEVICE;
1126 #ifdef SUPPORT_LINKS
1127         else if (S_ISLNK(file->mode))
1128                 type = TYPE_SYMLINK;
1129 #endif
1130         else {
1131                 rprintf(FERROR,
1132                         "internal: try_dests_non() called with invalid mode (%o)\n",
1133                         (int)file->mode);
1134                 exit_cleanup(RERR_UNSUPPORTED);
1135         }
1136
1137         do {
1138                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1139                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1140                         continue;
1141                 switch (type) {
1142                 case TYPE_DIR:
1143                         if (!S_ISDIR(sxp->st.st_mode))
1144                                 continue;
1145                         break;
1146                 case TYPE_SPECIAL:
1147                         if (!IS_SPECIAL(sxp->st.st_mode))
1148                                 continue;
1149                         break;
1150                 case TYPE_DEVICE:
1151                         if (!IS_DEVICE(sxp->st.st_mode))
1152                                 continue;
1153                         break;
1154 #ifdef SUPPORT_LINKS
1155                 case TYPE_SYMLINK:
1156                         if (!S_ISLNK(sxp->st.st_mode))
1157                                 continue;
1158                         break;
1159 #endif
1160                 }
1161                 if (match_level < 1) {
1162                         match_level = 1;
1163                         best_match = j;
1164                 }
1165                 switch (type) {
1166                 case TYPE_DIR:
1167                 case TYPE_SPECIAL:
1168                         break;
1169                 case TYPE_DEVICE:
1170                         devp = F_RDEV_P(file);
1171                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1172                                 continue;
1173                         break;
1174 #ifdef SUPPORT_LINKS
1175                 case TYPE_SYMLINK:
1176                         if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1177                                 continue;
1178                         lnk[len] = '\0';
1179                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1180                                 continue;
1181                         break;
1182 #endif
1183                 }
1184                 if (match_level < 2) {
1185                         match_level = 2;
1186                         best_match = j;
1187                 }
1188                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1189                         match_level = 3;
1190                         best_match = j;
1191                         break;
1192                 }
1193         } while (basis_dir[++j] != NULL);
1194
1195         if (!match_level)
1196                 return -1;
1197
1198         if (j != best_match) {
1199                 j = best_match;
1200                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1201                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1202                         return -1;
1203         }
1204
1205         if (match_level == 3) {
1206 #ifdef SUPPORT_HARD_LINKS
1207                 if (link_dest
1208 #ifndef CAN_HARDLINK_SYMLINK
1209                  && !S_ISLNK(file->mode)
1210 #endif
1211 #ifndef CAN_HARDLINK_SPECIAL
1212                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1213 #endif
1214                  && !S_ISDIR(file->mode)) {
1215                         if (do_link(cmpbuf, fname) < 0) {
1216                                 rsyserr(FERROR_XFER, errno,
1217                                         "failed to hard-link %s with %s",
1218                                         cmpbuf, fname);
1219                                 return j;
1220                         }
1221                         if (preserve_hard_links && F_IS_HLINKED(file))
1222                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1223                 } else
1224 #endif
1225                         match_level = 2;
1226                 if (itemizing && stdout_format_has_i
1227                  && (verbose > 1 || stdout_format_has_i > 1)) {
1228                         int chg = compare_dest && type != TYPE_DIR ? 0
1229                             : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1230                         char *lp = match_level == 3 ? "" : NULL;
1231                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1232                 }
1233                 if (verbose > 1 && maybe_ATTRS_REPORT) {
1234                         rprintf(FCLIENT, "%s%s is uptodate\n",
1235                                 fname, type == TYPE_DIR ? "/" : "");
1236                 }
1237                 return -2;
1238         }
1239
1240         return j;
1241 }
1242
1243 static void list_file_entry(struct file_struct *f)
1244 {
1245         char permbuf[PERMSTRING_SIZE];
1246         double len;
1247
1248         if (!F_IS_ACTIVE(f)) {
1249                 /* this can happen if duplicate names were removed */
1250                 return;
1251         }
1252
1253         permstring(permbuf, f->mode);
1254         len = F_LENGTH(f);
1255
1256         /* TODO: indicate '+' if the entry has an ACL. */
1257
1258 #ifdef SUPPORT_LINKS
1259         if (preserve_links && S_ISLNK(f->mode)) {
1260                 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
1261                         permbuf, len, timestring(f->modtime),
1262                         f_name(f, NULL), F_SYMLINK(f));
1263         } else
1264 #endif
1265         {
1266                 rprintf(FINFO, "%s %11.0f %s %s\n",
1267                         permbuf, len, timestring(f->modtime),
1268                         f_name(f, NULL));
1269         }
1270 }
1271
1272 static int phase = 0;
1273 static int dflt_perms;
1274
1275 static int implied_dirs_are_missing;
1276 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1277 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1278 {
1279         return F_DEPTH(file) > F_DEPTH(subtree)
1280                 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1281 }
1282
1283 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1284  * make sure it exists, and has the right permissions/timestamp info.  For
1285  * all other non-regular files (symlinks, etc.) we create them here.  For
1286  * regular files that have changed, we try to find a basis file and then
1287  * start sending checksums.  The ndx is the file's unique index value.
1288  *
1289  * The fname parameter must point to a MAXPATHLEN buffer!  (e.g it gets
1290  * passed to delete_item(), which can use it during a recursive delete.)
1291  *
1292  * Note that f_out is set to -1 when doing final directory-permission and
1293  * modification-time repair. */
1294 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1295                            int itemizing, enum logcode code, int f_out)
1296 {
1297         static const char *parent_dirname = "";
1298         /* Missing dir not created due to --dry-run; will still be scanned. */
1299         static struct file_struct *dry_missing_dir = NULL;
1300         /* Missing dir whose contents are skipped altogether due to
1301          * --ignore-non-existing, daemon exclude, or mkdir failure. */
1302         static struct file_struct *skip_dir = NULL;
1303         static struct file_list *fuzzy_dirlist = NULL;
1304         static int need_fuzzy_dirlist = 0;
1305         struct file_struct *fuzzy_file = NULL;
1306         int fd = -1, f_copy = -1;
1307         stat_x sx, real_sx;
1308         STRUCT_STAT partial_st;
1309         struct file_struct *back_file = NULL;
1310         int statret, real_ret, stat_errno;
1311         char *fnamecmp, *partialptr, *backupptr = NULL;
1312         char fnamecmpbuf[MAXPATHLEN];
1313         uchar fnamecmp_type;
1314         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1315         int is_dir = !S_ISDIR(file->mode) ? 0
1316                    : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1317                    : 1;
1318
1319         if (verbose > 2)
1320                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1321
1322         if (list_only) {
1323                 if (is_dir < 0
1324                  || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1325                         return;
1326                 list_file_entry(file);
1327                 return;
1328         }
1329
1330         if (skip_dir) {
1331                 if (is_below(file, skip_dir)) {
1332                         if (is_dir)
1333                                 file->flags |= FLAG_MISSING_DIR;
1334 #ifdef SUPPORT_HARD_LINKS
1335                         else if (F_IS_HLINKED(file))
1336                                 handle_skipped_hlink(file, itemizing, code, f_out);
1337 #endif
1338                         return;
1339                 }
1340                 skip_dir = NULL;
1341         }
1342
1343 #ifdef SUPPORT_ACLS
1344         sx.acc_acl = sx.def_acl = NULL;
1345 #endif
1346 #ifdef SUPPORT_XATTRS
1347         sx.xattr = NULL;
1348 #endif
1349         if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1350                 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1351                         if (is_dir < 0)
1352                                 return;
1353 #ifdef SUPPORT_HARD_LINKS
1354                         if (F_IS_HLINKED(file))
1355                                 handle_skipped_hlink(file, itemizing, code, f_out);
1356 #endif
1357                         rprintf(FERROR_XFER,
1358                                 "ERROR: daemon refused to receive %s \"%s\"\n",
1359                                 is_dir ? "directory" : "file", fname);
1360                         if (is_dir)
1361                                 goto skipping_dir_contents;
1362                         return;
1363                 }
1364         }
1365
1366         if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1367           parent_is_dry_missing:
1368                 if (fuzzy_dirlist) {
1369                         flist_free(fuzzy_dirlist);
1370                         fuzzy_dirlist = NULL;
1371                 }
1372                 parent_dirname = "";
1373                 statret = -1;
1374                 stat_errno = ENOENT;
1375         } else {
1376                 const char *dn = file->dirname ? file->dirname : ".";
1377                 dry_missing_dir = NULL;
1378                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1379                         if (relative_paths && !implied_dirs
1380                          && do_stat(dn, &sx.st) < 0) {
1381                                 if (dry_run)
1382                                         goto parent_is_dry_missing;
1383                                 if (create_directory_path(fname) < 0) {
1384                                         rsyserr(FERROR_XFER, errno,
1385                                                 "recv_generator: mkdir %s failed",
1386                                                 full_fname(dn));
1387                                 }
1388                         }
1389                         if (fuzzy_dirlist) {
1390                                 flist_free(fuzzy_dirlist);
1391                                 fuzzy_dirlist = NULL;
1392                         }
1393                         if (fuzzy_basis)
1394                                 need_fuzzy_dirlist = 1;
1395 #ifdef SUPPORT_ACLS
1396                         if (!preserve_perms)
1397                                 dflt_perms = default_perms_for_dir(dn);
1398 #endif
1399                 }
1400                 parent_dirname = dn;
1401
1402                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1403                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1404                         fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES);
1405                         need_fuzzy_dirlist = 0;
1406                 }
1407
1408                 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1409                 stat_errno = errno;
1410         }
1411
1412         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1413                 if (is_dir) {
1414                         if (is_dir < 0)
1415                                 return;
1416                         skip_dir = file;
1417                         file->flags |= FLAG_MISSING_DIR;
1418                 }
1419 #ifdef SUPPORT_HARD_LINKS
1420                 else if (F_IS_HLINKED(file))
1421                         handle_skipped_hlink(file, itemizing, code, f_out);
1422 #endif
1423                 if (verbose > 1) {
1424                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1425                                 is_dir ? "directory" : "file", fname);
1426                 }
1427                 return;
1428         }
1429
1430         if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1431          && !am_root && sx.st.st_uid == our_uid)
1432                 del_opts |= DEL_NO_UID_WRITE;
1433
1434         if (ignore_existing > 0 && statret == 0
1435          && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1436                 if (verbose > 1 && is_dir >= 0)
1437                         rprintf(FINFO, "%s exists\n", fname);
1438 #ifdef SUPPORT_HARD_LINKS
1439                 if (F_IS_HLINKED(file))
1440                         handle_skipped_hlink(file, itemizing, code, f_out);
1441 #endif
1442                 goto cleanup;
1443         }
1444
1445         fnamecmp = fname;
1446
1447         if (is_dir) {
1448                 mode_t added_perms;
1449                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1450                         goto cleanup;
1451                 if (am_root < 0) {
1452                         /* For --fake-super, the dir must be useable by the copying
1453                          * user, just like it would be for root. */
1454                         added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1455                 } else
1456                         added_perms = 0;
1457                 if (is_dir < 0) {
1458                         /* In inc_recurse mode we want to make sure any missing
1459                          * directories get created while we're still processing
1460                          * the parent dir (which allows us to touch the parent
1461                          * dir's mtime right away).  We will handle the dir in
1462                          * full later (right before we handle its contents). */
1463                         if (statret == 0
1464                          && (S_ISDIR(sx.st.st_mode)
1465                           || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1466                                 goto cleanup; /* Any errors get reported later. */
1467                         if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1468                                 file->flags |= FLAG_DIR_CREATED;
1469                         goto cleanup;
1470                 }
1471                 /* The file to be received is a directory, so we need
1472                  * to prepare appropriately.  If there is already a
1473                  * file of that name and it is *not* a directory, then
1474                  * we need to delete it.  If it doesn't exist, then
1475                  * (perhaps recursively) create it. */
1476                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1477                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1478                                 goto skipping_dir_contents;
1479                         statret = -1;
1480                 }
1481                 if (dry_run && statret != 0) {
1482                         if (!dry_missing_dir)
1483                                 dry_missing_dir = file;
1484                         file->flags |= FLAG_MISSING_DIR;
1485                 }
1486                 real_ret = statret;
1487                 real_sx = sx;
1488                 if (file->flags & FLAG_DIR_CREATED)
1489                         statret = -1;
1490                 if (!preserve_perms) { /* See comment in non-dir code below. */
1491                         file->mode = dest_mode(file->mode, sx.st.st_mode,
1492                                                dflt_perms, statret == 0);
1493                 }
1494                 if (statret != 0 && basis_dir[0] != NULL) {
1495                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1496                                               itemizing, code);
1497                         if (j == -2) {
1498                                 itemizing = 0;
1499                                 code = FNONE;
1500                                 statret = 1;
1501                         } else if (j >= 0) {
1502                                 statret = 1;
1503                                 fnamecmp = fnamecmpbuf;
1504                         }
1505                 }
1506                 if (itemizing && f_out != -1) {
1507                         itemize(fnamecmp, file, ndx, statret, &sx,
1508                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1509                 }
1510                 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1511                         if (!relative_paths || errno != ENOENT
1512                          || create_directory_path(fname) < 0
1513                          || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1514                                 rsyserr(FERROR_XFER, errno,
1515                                         "recv_generator: mkdir %s failed",
1516                                         full_fname(fname));
1517                           skipping_dir_contents:
1518                                 rprintf(FERROR,
1519                                     "*** Skipping any contents from this failed directory ***\n");
1520                                 skip_dir = file;
1521                                 file->flags |= FLAG_MISSING_DIR;
1522                                 goto cleanup;
1523                         }
1524                 }
1525
1526 #ifdef SUPPORT_XATTRS
1527                 if (preserve_xattrs && statret == 1)
1528                         copy_xattrs(fnamecmpbuf, fname);
1529 #endif
1530                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1531                     && verbose && code != FNONE && f_out != -1)
1532                         rprintf(code, "%s/\n", fname);
1533
1534                 /* We need to ensure that the dirs in the transfer have both
1535                  * readable and writable permissions during the time we are
1536                  * putting files within them.  This is then restored to the
1537                  * former permissions after the transfer is done. */
1538 #ifdef HAVE_CHMOD
1539                 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1540                         mode_t mode = file->mode | S_IRWXU;
1541                         if (do_chmod(fname, mode) < 0) {
1542                                 rsyserr(FERROR_XFER, errno,
1543                                         "failed to modify permissions on %s",
1544                                         full_fname(fname));
1545                         }
1546                         need_retouch_dir_perms = 1;
1547                 }
1548 #endif
1549
1550                 if (real_ret != 0 && one_file_system)
1551                         real_sx.st.st_dev = filesystem_dev;
1552                 if (inc_recurse) {
1553                         if (one_file_system) {
1554                                 uint32 *devp = F_DIR_DEV_P(file);
1555                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1556                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1557                         }
1558                 }
1559                 else if (delete_during && f_out != -1 && !phase
1560                     && !(file->flags & FLAG_MISSING_DIR)) {
1561                         if (file->flags & FLAG_CONTENT_DIR)
1562                                 delete_in_dir(fname, file, &real_sx.st.st_dev);
1563                         else
1564                                 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1565                 }
1566                 goto cleanup;
1567         }
1568
1569         /* If we're not preserving permissions, change the file-list's
1570          * mode based on the local permissions and some heuristics. */
1571         if (!preserve_perms) {
1572                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1573                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1574                                        exists);
1575         }
1576
1577 #ifdef SUPPORT_HARD_LINKS
1578         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1579          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1580                 goto cleanup;
1581 #endif
1582
1583         if (preserve_links && S_ISLNK(file->mode)) {
1584 #ifdef SUPPORT_LINKS
1585                 const char *sl = F_SYMLINK(file);
1586                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1587                         if (verbose) {
1588                                 if (solo_file) {
1589                                         /* fname contains the destination path, but we
1590                                          * want to report the source path. */
1591                                         fname = f_name(file, NULL);
1592                                 }
1593                                 rprintf(FINFO,
1594                                         "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1595                                         fname, sl);
1596                         }
1597                         return;
1598                 }
1599                 if (statret == 0) {
1600                         char lnk[MAXPATHLEN];
1601                         int len;
1602
1603                         if (!S_ISLNK(sx.st.st_mode))
1604                                 statret = -1;
1605                         else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1606                               && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1607                                 /* The link is pointing to the right place. */
1608                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1609                                 if (itemizing)
1610                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1611 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1612                                 if (preserve_hard_links && F_IS_HLINKED(file))
1613                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1614 #endif
1615                                 if (remove_source_files == 1)
1616                                         goto return_with_success;
1617                                 goto cleanup;
1618                         }
1619                         /* Not the right symlink (or not a symlink), so
1620                          * delete it. */
1621                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1622                                 goto cleanup;
1623                 } else if (basis_dir[0] != NULL) {
1624                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1625                                               itemizing, code);
1626                         if (j == -2) {
1627 #ifndef CAN_HARDLINK_SYMLINK
1628                                 if (link_dest) {
1629                                         /* Resort to --copy-dest behavior. */
1630                                 } else
1631 #endif
1632                                 if (!copy_dest)
1633                                         goto cleanup;
1634                                 itemizing = 0;
1635                                 code = FNONE;
1636                         } else if (j >= 0)
1637                                 statret = 1;
1638                 }
1639 #ifdef SUPPORT_HARD_LINKS
1640                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1641                         cur_flist->in_progress++;
1642                         goto cleanup;
1643                 }
1644 #endif
1645                 if (do_symlink(sl, fname) != 0) {
1646                         rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1647                                 full_fname(fname), sl);
1648                 } else {
1649                         set_file_attrs(fname, file, NULL, NULL, 0);
1650                         if (itemizing) {
1651                                 itemize(fname, file, ndx, statret, &sx,
1652                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1653                         }
1654                         if (code != FNONE && verbose)
1655                                 rprintf(code, "%s -> %s\n", fname, sl);
1656 #ifdef SUPPORT_HARD_LINKS
1657                         if (preserve_hard_links && F_IS_HLINKED(file))
1658                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1659 #endif
1660                         /* This does not check remove_source_files == 1
1661                          * because this is one of the items that the old
1662                          * --remove-sent-files option would remove. */
1663                         if (remove_source_files)
1664                                 goto return_with_success;
1665                 }
1666 #endif
1667                 goto cleanup;
1668         }
1669
1670         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1671          || (preserve_specials && IS_SPECIAL(file->mode))) {
1672                 dev_t rdev;
1673                 if (IS_DEVICE(file->mode)) {
1674                         uint32 *devp = F_RDEV_P(file);
1675                         rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1676                 } else
1677                         rdev = 0;
1678                 if (statret == 0) {
1679                         int del_for_flag;
1680                         if (IS_DEVICE(file->mode)) {
1681                                 if (!IS_DEVICE(sx.st.st_mode))
1682                                         statret = -1;
1683                                 del_for_flag = DEL_FOR_DEVICE;
1684                         } else {
1685                                 if (!IS_SPECIAL(sx.st.st_mode))
1686                                         statret = -1;
1687                                 del_for_flag = DEL_FOR_SPECIAL;
1688                         }
1689                         if (statret == 0
1690                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1691                          && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1692                                 /* The device or special file is identical. */
1693                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1694                                 if (itemizing)
1695                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1696 #ifdef SUPPORT_HARD_LINKS
1697                                 if (preserve_hard_links && F_IS_HLINKED(file))
1698                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1699 #endif
1700                                 if (remove_source_files == 1)
1701                                         goto return_with_success;
1702                                 goto cleanup;
1703                         }
1704                         if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1705                                 goto cleanup;
1706                 } else if (basis_dir[0] != NULL) {
1707                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1708                                               itemizing, code);
1709                         if (j == -2) {
1710 #ifndef CAN_HARDLINK_SPECIAL
1711                                 if (link_dest) {
1712                                         /* Resort to --copy-dest behavior. */
1713                                 } else
1714 #endif
1715                                 if (!copy_dest)
1716                                         goto cleanup;
1717                                 itemizing = 0;
1718                                 code = FNONE;
1719                         } else if (j >= 0)
1720                                 statret = 1;
1721                 }
1722 #ifdef SUPPORT_HARD_LINKS
1723                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1724                         cur_flist->in_progress++;
1725                         goto cleanup;
1726                 }
1727 #endif
1728                 if (verbose > 2) {
1729                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1730                                 fname, (int)file->mode,
1731                                 (long)major(rdev), (long)minor(rdev));
1732                 }
1733                 if (do_mknod(fname, file->mode, rdev) < 0) {
1734                         rsyserr(FERROR_XFER, errno, "mknod %s failed",
1735                                 full_fname(fname));
1736                 } else {
1737                         set_file_attrs(fname, file, NULL, NULL, 0);
1738                         if (itemizing) {
1739                                 itemize(fname, file, ndx, statret, &sx,
1740                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1741                         }
1742                         if (code != FNONE && verbose)
1743                                 rprintf(code, "%s\n", fname);
1744 #ifdef SUPPORT_HARD_LINKS
1745                         if (preserve_hard_links && F_IS_HLINKED(file))
1746                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1747 #endif
1748                         if (remove_source_files == 1)
1749                                 goto return_with_success;
1750                 }
1751                 goto cleanup;
1752         }
1753
1754         if (!S_ISREG(file->mode)) {
1755                 if (solo_file)
1756                         fname = f_name(file, NULL);
1757                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1758                 goto cleanup;
1759         }
1760
1761         if (max_size > 0 && F_LENGTH(file) > max_size) {
1762                 if (verbose > 1) {
1763                         if (solo_file)
1764                                 fname = f_name(file, NULL);
1765                         rprintf(FINFO, "%s is over max-size\n", fname);
1766                 }
1767                 goto cleanup;
1768         }
1769         if (min_size > 0 && F_LENGTH(file) < min_size) {
1770                 if (verbose > 1) {
1771                         if (solo_file)
1772                                 fname = f_name(file, NULL);
1773                         rprintf(FINFO, "%s is under min-size\n", fname);
1774                 }
1775                 goto cleanup;
1776         }
1777
1778         if (update_only > 0 && statret == 0
1779             && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1780                 if (verbose > 1)
1781                         rprintf(FINFO, "%s is newer\n", fname);
1782 #ifdef SUPPORT_HARD_LINKS
1783                 if (F_IS_HLINKED(file))
1784                         handle_skipped_hlink(file, itemizing, code, f_out);
1785 #endif
1786                 goto cleanup;
1787         }
1788
1789         fnamecmp_type = FNAMECMP_FNAME;
1790
1791         if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1792                 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1793                         goto cleanup;
1794                 statret = -1;
1795                 stat_errno = ENOENT;
1796         }
1797
1798         if (statret != 0 && basis_dir[0] != NULL) {
1799                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1800                                       itemizing, code);
1801                 if (j == -2) {
1802                         if (remove_source_files == 1)
1803                                 goto return_with_success;
1804                         goto cleanup;
1805                 }
1806                 if (j >= 0) {
1807                         fnamecmp = fnamecmpbuf;
1808                         fnamecmp_type = j;
1809                         statret = 0;
1810                 }
1811         }
1812
1813         real_ret = statret;
1814         real_sx = sx;
1815
1816         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1817             && link_stat(partialptr, &partial_st, 0) == 0
1818             && S_ISREG(partial_st.st_mode)) {
1819                 if (statret != 0)
1820                         goto prepare_to_open;
1821         } else
1822                 partialptr = NULL;
1823
1824         if (statret != 0 && fuzzy_dirlist) {
1825                 int j = find_fuzzy(file, fuzzy_dirlist);
1826                 if (j >= 0) {
1827                         fuzzy_file = fuzzy_dirlist->files[j];
1828                         f_name(fuzzy_file, fnamecmpbuf);
1829                         if (verbose > 2) {
1830                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1831                                         fname, fnamecmpbuf);
1832                         }
1833                         sx.st.st_size = F_LENGTH(fuzzy_file);
1834                         statret = 0;
1835                         fnamecmp = fnamecmpbuf;
1836                         fnamecmp_type = FNAMECMP_FUZZY;
1837                 }
1838         }
1839
1840         if (statret != 0) {
1841 #ifdef SUPPORT_HARD_LINKS
1842                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1843                         cur_flist->in_progress++;
1844                         goto cleanup;
1845                 }
1846 #endif
1847                 if (stat_errno == ENOENT)
1848                         goto notify_others;
1849                 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1850                         full_fname(fname));
1851                 goto cleanup;
1852         }
1853
1854         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1855                 ;
1856         else if (fnamecmp_type == FNAMECMP_FUZZY)
1857                 ;
1858         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1859                 if (partialptr) {
1860                         do_unlink(partialptr);
1861                         handle_partial_dir(partialptr, PDIR_DELETE);
1862                 }
1863                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1864                 if (itemizing)
1865                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1866 #ifdef SUPPORT_HARD_LINKS
1867                 if (preserve_hard_links && F_IS_HLINKED(file))
1868                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1869 #endif
1870                 if (remove_source_files != 1)
1871                         goto cleanup;
1872           return_with_success:
1873                 if (!dry_run)
1874                         send_msg_int(MSG_SUCCESS, ndx);
1875                 goto cleanup;
1876         }
1877
1878         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1879 #ifdef SUPPORT_HARD_LINKS
1880                 if (F_IS_HLINKED(file))
1881                         handle_skipped_hlink(file, itemizing, code, f_out);
1882 #endif
1883                 goto cleanup;
1884         }
1885
1886   prepare_to_open:
1887         if (partialptr) {
1888                 sx.st = partial_st;
1889                 fnamecmp = partialptr;
1890                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1891                 statret = 0;
1892         }
1893
1894         if (!do_xfers)
1895                 goto notify_others;
1896
1897         if (read_batch || whole_file) {
1898                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1899                         if (!(backupptr = get_backup_name(fname)))
1900                                 goto cleanup;
1901                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1902                                 goto pretend_missing;
1903                         if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1904                                 unmake_file(back_file);
1905                                 back_file = NULL;
1906                                 goto cleanup;
1907                         }
1908                 }
1909                 goto notify_others;
1910         }
1911
1912         if (fuzzy_dirlist) {
1913                 int j = flist_find(fuzzy_dirlist, file);
1914                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1915                         fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1916         }
1917
1918         /* open the file */
1919         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1920                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1921                         full_fname(fnamecmp));
1922           pretend_missing:
1923                 /* pretend the file didn't exist */
1924 #ifdef SUPPORT_HARD_LINKS
1925                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1926                         cur_flist->in_progress++;
1927                         goto cleanup;
1928                 }
1929 #endif
1930                 statret = real_ret = -1;
1931                 goto notify_others;
1932         }
1933
1934         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1935                 if (!(backupptr = get_backup_name(fname))) {
1936                         close(fd);
1937                         goto cleanup;
1938                 }
1939                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1940                         close(fd);
1941                         goto pretend_missing;
1942                 }
1943                 if (robust_unlink(backupptr) && errno != ENOENT) {
1944                         rsyserr(FERROR_XFER, errno, "unlink %s",
1945                                 full_fname(backupptr));
1946                         unmake_file(back_file);
1947                         back_file = NULL;
1948                         close(fd);
1949                         goto cleanup;
1950                 }
1951                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1952                         int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1953                         if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1954                                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1955                                         save_errno = errno ? errno : save_errno;
1956                                 else
1957                                         save_errno = 0;
1958                         }
1959                         if (save_errno) {
1960                                 rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1961                                 unmake_file(back_file);
1962                                 back_file = NULL;
1963                                 close(fd);
1964                                 goto cleanup;
1965                         }
1966                 }
1967                 fnamecmp_type = FNAMECMP_BACKUP;
1968         }
1969
1970         if (verbose > 3) {
1971                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1972                         fnamecmp, (double)sx.st.st_size);
1973         }
1974
1975         if (verbose > 2)
1976                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1977
1978   notify_others:
1979         if (remove_source_files && !delay_updates && !phase && !dry_run)
1980                 increment_active_files(ndx, itemizing, code);
1981         if (inc_recurse && !dry_run)
1982                 cur_flist->in_progress++;
1983 #ifdef SUPPORT_HARD_LINKS
1984         if (preserve_hard_links && F_IS_HLINKED(file))
1985                 file->flags |= FLAG_FILE_SENT;
1986 #endif
1987         write_ndx(f_out, ndx);
1988         if (itemizing) {
1989                 int iflags = ITEM_TRANSFER;
1990                 if (always_checksum > 0)
1991                         iflags |= ITEM_REPORT_CHANGE;
1992                 if (fnamecmp_type != FNAMECMP_FNAME)
1993                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1994                 if (fnamecmp_type == FNAMECMP_FUZZY)
1995                         iflags |= ITEM_XNAME_FOLLOWS;
1996                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1997                         fuzzy_file ? fuzzy_file->basename : NULL);
1998 #ifdef SUPPORT_ACLS
1999                 if (preserve_acls)
2000                         free_acl(&real_sx);
2001 #endif
2002 #ifdef SUPPORT_XATTRS
2003                 if (preserve_xattrs)
2004                         free_xattr(&real_sx);
2005 #endif
2006         }
2007
2008         if (!do_xfers) {
2009 #ifdef SUPPORT_HARD_LINKS
2010                 if (preserve_hard_links && F_IS_HLINKED(file))
2011                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
2012 #endif
2013                 goto cleanup;
2014         }
2015         if (read_batch)
2016                 goto cleanup;
2017
2018         if (statret != 0 || whole_file)
2019                 write_sum_head(f_out, NULL);
2020         else if (sx.st.st_size <= 0) {
2021                 write_sum_head(f_out, NULL);
2022                 close(fd);
2023         } else {
2024                 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
2025                         rprintf(FWARNING,
2026                             "WARNING: file is too large for checksum sending: %s\n",
2027                             fnamecmp);
2028                         write_sum_head(f_out, NULL);
2029                 }
2030                 close(fd);
2031         }
2032
2033   cleanup:
2034         if (back_file) {
2035                 int save_preserve_xattrs = preserve_xattrs;
2036                 if (f_copy >= 0)
2037                         close(f_copy);
2038 #ifdef SUPPORT_XATTRS
2039                 if (preserve_xattrs) {
2040                         copy_xattrs(fname, backupptr);
2041                         preserve_xattrs = 0;
2042                 }
2043 #endif
2044                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
2045                 preserve_xattrs = save_preserve_xattrs;
2046                 if (verbose > 1) {
2047                         rprintf(FINFO, "backed up %s to %s\n",
2048                                 fname, backupptr);
2049                 }
2050                 unmake_file(back_file);
2051         }
2052
2053 #ifdef SUPPORT_ACLS
2054         if (preserve_acls)
2055                 free_acl(&sx);
2056 #endif
2057 #ifdef SUPPORT_XATTRS
2058         if (preserve_xattrs)
2059                 free_xattr(&sx);
2060 #endif
2061         return;
2062 }
2063
2064 #ifdef SUPPORT_HARD_LINKS
2065 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2066                                  enum logcode code, int f_out)
2067 {
2068         char fbuf[MAXPATHLEN];
2069         int new_last_ndx;
2070         struct file_list *save_flist = cur_flist;
2071
2072         /* If we skip the last item in a chain of links and there was a
2073          * prior non-skipped hard-link waiting to finish, finish it now. */
2074         if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2075                 return;
2076
2077         file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2078         cur_flist->in_progress--; /* undo prior increment */
2079         f_name(file, fbuf);
2080         recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2081
2082         cur_flist = save_flist;
2083 }
2084 #endif
2085
2086 static void touch_up_dirs(struct file_list *flist, int ndx)
2087 {
2088         static int counter = 0;
2089         struct file_struct *file;
2090         char *fname;
2091         BOOL fix_dir_perms;
2092         int i, start, end;
2093
2094         if (ndx < 0) {
2095                 start = 0;
2096                 end = flist->used - 1;
2097         } else
2098                 start = end = ndx;
2099
2100         /* Fix any directory permissions that were modified during the
2101          * transfer and/or re-set any tweaked modified-time values. */
2102         for (i = start; i <= end; i++, counter++) {
2103                 file = flist->files[i];
2104                 if (!S_ISDIR(file->mode)
2105                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2106                         continue;
2107                 if (verbose > 3) {
2108                         fname = f_name(file, NULL);
2109                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2110                                 NS(fname), i);
2111                 }
2112                 /* Be sure not to retouch permissions with --fake-super. */
2113                 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2114                 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2115                  || !(need_retouch_dir_times || fix_dir_perms))
2116                         continue;
2117                 fname = f_name(file, NULL);
2118                 if (fix_dir_perms)
2119                         do_chmod(fname, file->mode);
2120                 if (need_retouch_dir_times) {
2121                         STRUCT_STAT st;
2122                         if (link_stat(fname, &st, 0) == 0
2123                          && cmp_time(st.st_mtime, file->modtime) != 0)
2124                                 set_modtime(fname, file->modtime, file->mode);
2125                 }
2126                 if (counter >= loopchk_limit) {
2127                         if (allowed_lull)
2128                                 maybe_send_keepalive();
2129                         else
2130                                 maybe_flush_socket(0);
2131                         counter = 0;
2132                 }
2133         }
2134 }
2135
2136 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2137 {
2138         struct file_struct *file;
2139         struct file_list *flist;
2140         char fbuf[MAXPATHLEN];
2141         int ndx;
2142
2143         while (1) {
2144 #ifdef SUPPORT_HARD_LINKS
2145                 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2146                         int send_failed = (ndx == -2);
2147                         if (send_failed)
2148                                 ndx = get_hlink_num();
2149                         flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2150                         file = flist->files[ndx - flist->ndx_start];
2151                         assert(file->flags & FLAG_HLINKED);
2152                         if (send_failed)
2153                                 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2154                         else
2155                                 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2156                         flist->in_progress--;
2157                         continue;
2158                 }
2159 #endif
2160
2161                 if (check_redo && (ndx = get_redo_num()) != -1) {
2162                         csum_length = SUM_LENGTH;
2163                         max_size = -max_size;
2164                         min_size = -min_size;
2165                         ignore_existing = -ignore_existing;
2166                         ignore_non_existing = -ignore_non_existing;
2167                         update_only = -update_only;
2168                         always_checksum = -always_checksum;
2169                         size_only = -size_only;
2170                         append_mode = -append_mode;
2171                         make_backups = -make_backups; /* avoid dup backup w/inplace */
2172                         ignore_times++;
2173
2174                         flist = cur_flist;
2175                         cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2176
2177                         file = cur_flist->files[ndx - cur_flist->ndx_start];
2178                         if (solo_file)
2179                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2180                         else
2181                                 f_name(file, fbuf);
2182                         recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2183                         cur_flist->to_redo--;
2184
2185                         cur_flist = flist;
2186
2187                         csum_length = SHORT_SUM_LENGTH;
2188                         max_size = -max_size;
2189                         min_size = -min_size;
2190                         ignore_existing = -ignore_existing;
2191                         ignore_non_existing = -ignore_non_existing;
2192                         update_only = -update_only;
2193                         always_checksum = -always_checksum;
2194                         size_only = -size_only;
2195                         append_mode = -append_mode;
2196                         make_backups = -make_backups;
2197                         ignore_times--;
2198                         continue;
2199                 }
2200
2201                 if (cur_flist == first_flist)
2202                         break;
2203
2204                 /* We only get here if inc_recurse is enabled. */
2205                 if (first_flist->in_progress || first_flist->to_redo)
2206                         break;
2207
2208                 write_ndx(sock_f_out, NDX_DONE);
2209                 if (!read_batch)
2210                         maybe_flush_socket(1);
2211
2212                 if (delete_during == 2 || !dir_tweaking) {
2213                         /* Skip directory touch-up. */
2214                 } else if (first_flist->parent_ndx >= 0)
2215                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
2216
2217                 flist_free(first_flist); /* updates first_flist */
2218         }
2219 }
2220
2221 void generate_files(int f_out, const char *local_name)
2222 {
2223         int i, ndx, next_loopchk = 0;
2224         char fbuf[MAXPATHLEN];
2225         int itemizing;
2226         enum logcode code;
2227         int save_do_progress = do_progress;
2228
2229         if (protocol_version >= 29) {
2230                 itemizing = 1;
2231                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2232                 code = logfile_format_has_i ? FNONE : FLOG;
2233         } else if (am_daemon) {
2234                 itemizing = logfile_format_has_i && do_xfers;
2235                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2236                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2237         } else if (!am_server) {
2238                 itemizing = stdout_format_has_i;
2239                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2240                 code = itemizing ? FNONE : FINFO;
2241         } else {
2242                 itemizing = 0;
2243                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2244                 code = FINFO;
2245         }
2246         solo_file = local_name;
2247         dir_tweaking = !(list_only || solo_file || dry_run);
2248         need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2249         loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2250         symlink_timeset_failed_flags = ITEM_REPORT_TIME
2251             | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2252         implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2253
2254         if (verbose > 2)
2255                 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2256
2257         if (delete_before && !solo_file && cur_flist->used > 0)
2258                 do_delete_pass();
2259         if (delete_during == 2) {
2260                 deldelay_size = BIGPATHBUFLEN * 4;
2261                 deldelay_buf = new_array(char, deldelay_size);
2262                 if (!deldelay_buf)
2263                         out_of_memory("delete-delay");
2264         }
2265         do_progress = 0;
2266
2267         if (append_mode > 0 || whole_file < 0)
2268                 whole_file = 0;
2269         if (verbose >= 2) {
2270                 rprintf(FINFO, "delta-transmission %s\n",
2271                         whole_file
2272                         ? "disabled for local transfer or --whole-file"
2273                         : "enabled");
2274         }
2275
2276         /* Since we often fill up the outgoing socket and then just sit around
2277          * waiting for the other 2 processes to do their thing, we don't want
2278          * to exit on a timeout.  If the data stops flowing, the receiver will
2279          * notice that and let us know via the message pipe (or its closing). */
2280         ignore_timeout = 1;
2281
2282         dflt_perms = (ACCESSPERMS & ~orig_umask);
2283
2284         do {
2285 #ifdef SUPPORT_HARD_LINKS
2286                 if (preserve_hard_links && inc_recurse) {
2287                         while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2288                                 wait_for_receiver();
2289                 }
2290 #endif
2291
2292                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2293                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2294                         if (solo_file)
2295                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2296                         else
2297                                 f_name(fp, fbuf);
2298                         ndx = cur_flist->ndx_start - 1;
2299                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2300                         if (delete_during && dry_run < 2 && !list_only
2301                          && !(fp->flags & FLAG_MISSING_DIR)) {
2302                                 if (fp->flags & FLAG_CONTENT_DIR) {
2303                                         dev_t dirdev;
2304                                         if (one_file_system) {
2305                                                 uint32 *devp = F_DIR_DEV_P(fp);
2306                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2307                                         } else
2308                                                 dirdev = MAKEDEV(0, 0);
2309                                         delete_in_dir(fbuf, fp, &dirdev);
2310                                 } else
2311                                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2312                         }
2313                 }
2314                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2315                         struct file_struct *file = cur_flist->sorted[i];
2316
2317                         if (!F_IS_ACTIVE(file))
2318                                 continue;
2319
2320                         if (unsort_ndx)
2321                                 ndx = F_NDX(file);
2322                         else
2323                                 ndx = i + cur_flist->ndx_start;
2324
2325                         if (solo_file)
2326                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2327                         else
2328                                 f_name(file, fbuf);
2329                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2330
2331                         check_for_finished_files(itemizing, code, 0);
2332
2333                         if (i + cur_flist->ndx_start >= next_loopchk) {
2334                                 if (allowed_lull)
2335                                         maybe_send_keepalive();
2336                                 else
2337                                         maybe_flush_socket(0);
2338                                 next_loopchk += loopchk_limit;
2339                         }
2340                 }
2341
2342                 if (!inc_recurse) {
2343                         write_ndx(f_out, NDX_DONE);
2344                         break;
2345                 }
2346
2347                 while (1) {
2348                         check_for_finished_files(itemizing, code, 1);
2349                         if (cur_flist->next || flist_eof)
2350                                 break;
2351                         wait_for_receiver();
2352                 }
2353         } while ((cur_flist = cur_flist->next) != NULL);
2354
2355         if (delete_during)
2356                 delete_in_dir(NULL, NULL, &dev_zero);
2357         phase++;
2358         if (verbose > 2)
2359                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2360
2361         while (1) {
2362                 check_for_finished_files(itemizing, code, 1);
2363                 if (msgdone_cnt)
2364                         break;
2365                 wait_for_receiver();
2366         }
2367
2368         phase++;
2369         if (verbose > 2)
2370                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2371
2372         write_ndx(f_out, NDX_DONE);
2373
2374         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2375         if (protocol_version >= 29 && !delay_updates)
2376                 write_ndx(f_out, NDX_DONE);
2377
2378         /* Read MSG_DONE for the redo phase (and any prior messages). */
2379         while (1) {
2380                 check_for_finished_files(itemizing, code, 0);
2381                 if (msgdone_cnt > 1)
2382                         break;
2383                 wait_for_receiver();
2384         }
2385
2386         if (protocol_version >= 29) {
2387                 phase++;
2388                 if (verbose > 2)
2389                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2390                 if (delay_updates)
2391                         write_ndx(f_out, NDX_DONE);
2392                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2393                 while (msgdone_cnt == 2)
2394                         wait_for_receiver();
2395         }
2396
2397         do_progress = save_do_progress;
2398         if (delete_during == 2)
2399                 do_delayed_deletions(fbuf);
2400         if (delete_after && !solo_file && file_total > 0)
2401                 do_delete_pass();
2402
2403         if ((need_retouch_dir_perms || need_retouch_dir_times)
2404          && dir_tweaking && (!inc_recurse || delete_during == 2))
2405                 touch_up_dirs(dir_flist, -1);
2406
2407         if (max_delete >= 0 && deletion_count > max_delete) {
2408                 rprintf(FWARNING,
2409                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2410                         deletion_count - max_delete);
2411                 io_error |= IOERR_DEL_LIMIT;
2412         }
2413
2414         if (verbose > 2)
2415                 rprintf(FINFO, "generate_files finished\n");
2416 }