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) 2003-2008 Wayne Davison
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, visit the http://fsf.org website.
  21  */
  22
  23 #include "rsync.h"
  24 #include "inums.h"
  25 #include "ifuncs.h"
  26
  27 extern int dry_run;
  28 extern int do_xfers;
  29 extern int stdout_format_has_i;
  30 extern int logfile_format_has_i;
  31 extern int am_root;
  32 extern int am_server;
  33 extern int am_daemon;
  34 extern int inc_recurse;
  35 extern int relative_paths;
  36 extern int implied_dirs;
  37 extern int keep_dirlinks;
  38 extern int preserve_acls;
  39 extern int preserve_xattrs;
  40 extern int preserve_links;
  41 extern int preserve_devices;
  42 extern int preserve_specials;
  43 extern int preserve_hard_links;
  44 extern int preserve_executability;
  45 extern int preserve_perms;
  46 extern int preserve_times;
  47 extern int uid_ndx;
  48 extern int gid_ndx;
  49 extern int delete_mode;
  50 extern int delete_before;
  51 extern int delete_during;
  52 extern int delete_after;
  53 extern int msgdone_cnt;
  54 extern int ignore_errors;
  55 extern int remove_source_files;
  56 extern int delay_updates;
  57 extern int update_only;
  58 extern int human_readable;
  59 extern int ignore_existing;
  60 extern int ignore_non_existing;
  61 extern int inplace;
  62 extern int append_mode;
  63 extern int make_backups;
  64 extern int csum_length;
  65 extern int ignore_times;
  66 extern int size_only;
  67 extern OFF_T max_size;
  68 extern OFF_T min_size;
  69 extern int io_error;
  70 extern int flist_eof;
  71 extern int allowed_lull;
  72 extern int sock_f_out;
  73 extern int ignore_timeout;
  74 extern int protocol_version;
  75 extern int file_total;
  76 extern int fuzzy_basis;
  77 extern int always_checksum;
  78 extern int checksum_len;
  79 extern char *partial_dir;
  80 extern int compare_dest;
  81 extern int copy_dest;
  82 extern int link_dest;
  83 extern int whole_file;
  84 extern int list_only;
  85 extern int read_batch;
  86 extern int safe_symlinks;
  87 extern long block_size; /* "long" because popt can't set an int32. */
  88 extern int unsort_ndx;
  89 extern int max_delete;
  90 extern int force_delete;
  91 extern int one_file_system;
  92 extern struct stats stats;
  93 extern dev_t filesystem_dev;
  94 extern mode_t orig_umask;
  95 extern uid_t our_uid;
  96 extern char *backup_dir;
  97 extern char *backup_suffix;
  98 extern int backup_suffix_len;
  99 extern char *basis_dir[MAX_BASIS_DIRS+1];
 100 extern struct file_list *cur_flist, *first_flist, *dir_flist;
 101 extern struct filter_list_struct daemon_filter_list;
 102
 103 int ignore_perishable = 0;
 104 int non_perishable_cnt = 0;
 105 int maybe_ATTRS_REPORT = 0;
 106
 107 static dev_t dev_zero;
 108 static int skipped_deletes = 0;
 109 static int deldelay_size = 0, deldelay_cnt = 0;
 110 static char *deldelay_buf = NULL;
 111 static int deldelay_fd = -1;
 112 static int loopchk_limit;
 113 static int dir_tweaking;
 114 static int symlink_timeset_failed_flags;
 115 static int need_retouch_dir_times;
 116 static int need_retouch_dir_perms;
 117 static const char *solo_file = NULL;
 118
 119 /* For calling delete_item() and delete_dir_contents(). */
 120 #define DEL_NO_UID_WRITE        (1<<0) /* file/dir has our uid w/o write perm */
 121 #define DEL_RECURSE             (1<<1) /* if dir, delete all contents */
 122 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 123 #define DEL_FOR_FILE            (1<<3) /* making room for a replacement file */
 124 #define DEL_FOR_DIR             (1<<4) /* making room for a replacement dir */
 125 #define DEL_FOR_SYMLINK         (1<<5) /* making room for a replacement symlink */
 126 #define DEL_FOR_DEVICE          (1<<6) /* making room for a replacement device */
 127 #define DEL_FOR_SPECIAL         (1<<7) /* making room for a replacement special */
 128
 129 #define DEL_MAKE_ROOM (DEL_FOR_FILE|DEL_FOR_DIR|DEL_FOR_SYMLINK|DEL_FOR_DEVICE|DEL_FOR_SPECIAL)
 130
 131 enum nonregtype {
 132     TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
 133 };
 134
 135 enum delret {
 136     DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 137 };
 138
 139 /* Forward declarations. */
 140 static enum delret delete_dir_contents(char *fname, uint16 flags);
 141 #ifdef SUPPORT_HARD_LINKS
 142 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
 143                                  enum logcode code, int f_out);
 144 #endif
 145
 146 static int is_backup_file(char *fn)
 147 {
 148         int k = strlen(fn) - backup_suffix_len;
 149         return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 150 }
 151
 152 /* Delete a file or directory.  If DEL_RECURSE is set in the flags, this will
 153  * delete recursively.
 154  *
 155  * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
 156  * a directory! (The buffer is used for recursion, but returned unchanged.)
 157  */
 158 static enum delret delete_item(char *fbuf, uint16 mode, uint16 flags)
 159 {
 160         enum delret ret;
 161         char *what;
 162         int ok;
 163
 164         if (DEBUG_GTE(DEL, 2)) {
 165                 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
 166                         fbuf, (int)mode, (int)flags);
 167         }
 168
 169         if (flags & DEL_NO_UID_WRITE)
 170                 do_chmod(fbuf, mode | S_IWUSR);
 171
 172         if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
 173                 int save_uid_ndx = uid_ndx;
 174                 /* This only happens on the first call to delete_item() since
 175                  * delete_dir_contents() always calls us w/DEL_DIR_IS_EMPTY. */
 176                 if (!uid_ndx)
 177                         uid_ndx = ++file_extra_cnt;
 178                 ignore_perishable = 1;
 179                 /* If DEL_RECURSE is not set, this just reports emptiness. */
 180                 ret = delete_dir_contents(fbuf, flags);
 181                 ignore_perishable = 0;
 182                 if (!save_uid_ndx) {
 183                         --file_extra_cnt;
 184                         uid_ndx = 0;
 185                 }
 186                 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
 187                         goto check_ret;
 188                 /* OK: try to delete the directory. */
 189         }
 190
 191         if (!(flags & DEL_MAKE_ROOM) && max_delete >= 0 && stats.deleted_files >= max_delete) {
 192                 skipped_deletes++;
 193                 return DR_AT_LIMIT;
 194         }
 195
 196         if (S_ISDIR(mode)) {
 197                 what = "rmdir";
 198                 ok = do_rmdir(fbuf) == 0;
 199         } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
 200                 what = "make_backup";
 201                 ok = make_backup(fbuf);
 202         } else {
 203                 what = "unlink";
 204                 ok = robust_unlink(fbuf) == 0;
 205         }
 206
 207         if (ok) {
 208                 if (!(flags & DEL_MAKE_ROOM)) {
 209                         log_delete(fbuf, mode);
 210                         stats.deleted_files++;
 211                         if (S_ISREG(mode)) {
 212                                 /* Nothing more to count */
 213                         } else if (S_ISDIR(mode))
 214                                 stats.deleted_dirs++;
 215 #ifdef SUPPORT_LINKS
 216                         else if (S_ISLNK(mode))
 217                                 stats.deleted_symlinks++;
 218 #endif
 219                         else if (IS_DEVICE(mode))
 220                                 stats.deleted_symlinks++;
 221                         else
 222                                 stats.deleted_specials++;
 223                 }
 224                 ret = DR_SUCCESS;
 225         } else {
 226                 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
 227                         rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 228                                 fbuf);
 229                         ret = DR_NOT_EMPTY;
 230                 } else if (errno != ENOENT) {
 231                         rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
 232                                 what, fbuf);
 233                         ret = DR_FAILURE;
 234                 } else
 235                         ret = DR_SUCCESS;
 236         }
 237
 238   check_ret:
 239         if (ret != DR_SUCCESS && flags & DEL_MAKE_ROOM) {
 240                 const char *desc;
 241                 switch (flags & DEL_MAKE_ROOM) {
 242                 case DEL_FOR_FILE: desc = "regular file"; break;
 243                 case DEL_FOR_DIR: desc = "directory"; break;
 244                 case DEL_FOR_SYMLINK: desc = "symlink"; break;
 245                 case DEL_FOR_DEVICE: desc = "device file"; break;
 246                 case DEL_FOR_SPECIAL: desc = "special file"; break;
 247                 default: exit_cleanup(RERR_UNSUPPORTED); /* IMPOSSIBLE */
 248                 }
 249                 rprintf(FERROR_XFER, "could not make way for new %s: %s\n",
 250                         desc, fbuf);
 251         }
 252         return ret;
 253 }
 254
 255 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
 256  * its contents, otherwise just checks for content.  Returns DR_SUCCESS or
 257  * DR_NOT_EMPTY.  Note that fname must point to a MAXPATHLEN buffer!  (The
 258  * buffer is used for recursion, but returned unchanged.)
 259  */
 260 static enum delret delete_dir_contents(char *fname, uint16 flags)
 261 {
 262         struct file_list *dirlist;
 263         enum delret ret;
 264         unsigned remainder;
 265         void *save_filters;
 266         int j, dlen;
 267         char *p;
 268
 269         if (DEBUG_GTE(DEL, 3)) {
 270                 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
 271                         fname, flags);
 272         }
 273
 274         dlen = strlen(fname);
 275         save_filters = push_local_filters(fname, dlen);
 276
 277         non_perishable_cnt = 0;
 278         dirlist = get_dirlist(fname, dlen, 0);
 279         ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
 280
 281         if (!dirlist->used)
 282                 goto done;
 283
 284         if (!(flags & DEL_RECURSE)) {
 285                 ret = DR_NOT_EMPTY;
 286                 goto done;
 287         }
 288
 289         p = fname + dlen;
 290         if (dlen != 1 || *fname != '/')
 291                 *p++ = '/';
 292         remainder = MAXPATHLEN - (p - fname);
 293
 294         /* We do our own recursion, so make delete_item() non-recursive. */
 295         flags = (flags & ~(DEL_RECURSE|DEL_MAKE_ROOM|DEL_NO_UID_WRITE))
 296               | DEL_DIR_IS_EMPTY;
 297
 298         for (j = dirlist->used; j--; ) {
 299                 struct file_struct *fp = dirlist->files[j];
 300
 301                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 302                         if (DEBUG_GTE(DEL, 1)) {
 303                                 rprintf(FINFO,
 304                                     "mount point, %s, pins parent directory\n",
 305                                     f_name(fp, NULL));
 306                         }
 307                         ret = DR_NOT_EMPTY;
 308                         continue;
 309                 }
 310
 311                 strlcpy(p, fp->basename, remainder);
 312                 if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
 313                         do_chmod(fname, fp->mode | S_IWUSR);
 314                 /* Save stack by recursing to ourself directly. */
 315                 if (S_ISDIR(fp->mode)) {
 316                         if (delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
 317                                 ret = DR_NOT_EMPTY;
 318                 }
 319                 if (delete_item(fname, fp->mode, flags) != DR_SUCCESS)
 320                         ret = DR_NOT_EMPTY;
 321         }
 322
 323         fname[dlen] = '\0';
 324
 325   done:
 326         flist_free(dirlist);
 327         pop_local_filters(save_filters);
 328
 329         if (ret == DR_NOT_EMPTY) {
 330                 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 331                         fname);
 332         }
 333         return ret;
 334 }
 335
 336 static int start_delete_delay_temp(void)
 337 {
 338         char fnametmp[MAXPATHLEN];
 339         int save_dry_run = dry_run;
 340
 341         dry_run = 0;
 342         if (!get_tmpname(fnametmp, "deldelay")
 343          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 344                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 345                         inc_recurse ? "" : " -- switching to --delete-after");
 346                 delete_during = 0;
 347                 delete_after = !inc_recurse;
 348                 dry_run = save_dry_run;
 349                 return 0;
 350         }
 351         unlink(fnametmp);
 352         dry_run = save_dry_run;
 353         return 1;
 354 }
 355
 356 static int flush_delete_delay(void)
 357 {
 358         if (deldelay_fd < 0 && !start_delete_delay_temp())
 359                 return 0;
 360         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 361                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 362                 delete_during = 0;
 363                 delete_after = !inc_recurse;
 364                 close(deldelay_fd);
 365                 return 0;
 366         }
 367         deldelay_cnt = 0;
 368         return 1;
 369 }
 370
 371 static int remember_delete(struct file_struct *file, const char *fname, int flags)
 372 {
 373         int len;
 374
 375         if (deldelay_cnt == deldelay_size && !flush_delete_delay())
 376                 return 0;
 377
 378         if (flags & DEL_NO_UID_WRITE)
 379                 deldelay_buf[deldelay_cnt++] = '!';
 380
 381         while (1) {
 382                 len = snprintf(deldelay_buf + deldelay_cnt,
 383                                deldelay_size - deldelay_cnt,
 384                                "%x %s%c",
 385                                (int)file->mode, fname, '\0');
 386                 if ((deldelay_cnt += len) <= deldelay_size)
 387                         break;
 388                 deldelay_cnt -= len;
 389                 if (!flush_delete_delay())
 390                         return 0;
 391         }
 392
 393         return 1;
 394 }
 395
 396 static int read_delay_line(char *buf, int *flags_p)
 397 {
 398         static int read_pos = 0;
 399         int j, len, mode;
 400         char *bp, *past_space;
 401
 402         while (1) {
 403                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 404                 if (j < deldelay_cnt)
 405                         break;
 406                 if (deldelay_fd < 0) {
 407                         if (j > read_pos)
 408                                 goto invalid_data;
 409                         return -1;
 410                 }
 411                 deldelay_cnt -= read_pos;
 412                 if (deldelay_cnt == deldelay_size)
 413                         goto invalid_data;
 414                 if (deldelay_cnt && read_pos) {
 415                         memmove(deldelay_buf, deldelay_buf + read_pos,
 416                                 deldelay_cnt);
 417                 }
 418                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 419                            deldelay_size - deldelay_cnt);
 420                 if (len == 0) {
 421                         if (deldelay_cnt) {
 422                                 rprintf(FERROR,
 423                                     "ERROR: unexpected EOF in delete-delay file.\n");
 424                         }
 425                         return -1;
 426                 }
 427                 if (len < 0) {
 428                         rsyserr(FERROR, errno,
 429                                 "reading delete-delay file");
 430                         return -1;
 431                 }
 432                 deldelay_cnt += len;
 433                 read_pos = 0;
 434         }
 435
 436         bp = deldelay_buf + read_pos;
 437         if (*bp == '!') {
 438                 bp++;
 439                 *flags_p = DEL_NO_UID_WRITE;
 440         } else
 441                 *flags_p = 0;
 442
 443         if (sscanf(bp, "%x ", &mode) != 1) {
 444           invalid_data:
 445                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 446                 return -1;
 447         }
 448         past_space = strchr(bp, ' ') + 1;
 449         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 450         read_pos = j + 1;
 451
 452         if (len > MAXPATHLEN) {
 453                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 454                 return -1;
 455         }
 456
 457         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 458          * instead of returning a pointer to our buffer. */
 459         memcpy(buf, past_space, len);
 460
 461         return mode;
 462 }
 463
 464 static void do_delayed_deletions(char *delbuf)
 465 {
 466         int mode, flags;
 467
 468         if (deldelay_fd >= 0) {
 469                 if (deldelay_cnt && !flush_delete_delay())
 470                         return;
 471                 lseek(deldelay_fd, 0, 0);
 472         }
 473         while ((mode = read_delay_line(delbuf, &flags)) >= 0)
 474                 delete_item(delbuf, mode, flags | DEL_RECURSE);
 475         if (deldelay_fd >= 0)
 476                 close(deldelay_fd);
 477 }
 478
 479 /* This function is used to implement per-directory deletion, and is used by
 480  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 481  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 482  * call will append names onto the end, but the old dir value will be restored
 483  * on exit). */
 484 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 485 {
 486         static int already_warned = 0;
 487         struct file_list *dirlist;
 488         char delbuf[MAXPATHLEN];
 489         int dlen, i;
 490         int save_uid_ndx = uid_ndx;
 491
 492         if (!fbuf) {
 493                 change_local_filter_dir(NULL, 0, 0);
 494                 return;
 495         }
 496
 497         if (DEBUG_GTE(DEL, 2))
 498                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 499
 500         if (allowed_lull)
 501                 maybe_send_keepalive();
 502
 503         if (io_error && !ignore_errors) {
 504                 if (already_warned)
 505                         return;
 506                 rprintf(FINFO,
 507                         "IO error encountered -- skipping file deletion\n");
 508                 already_warned = 1;
 509                 return;
 510         }
 511
 512         dlen = strlen(fbuf);
 513         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 514
 515         if (one_file_system) {
 516                 if (file->flags & FLAG_TOP_DIR)
 517                         filesystem_dev = *fs_dev;
 518                 else if (filesystem_dev != *fs_dev)
 519                         return;
 520         }
 521
 522         if (!uid_ndx)
 523                 uid_ndx = ++file_extra_cnt;
 524
 525         dirlist = get_dirlist(fbuf, dlen, 0);
 526
 527         /* If an item in dirlist is not found in flist, delete it
 528          * from the filesystem. */
 529         for (i = dirlist->used; i--; ) {
 530                 struct file_struct *fp = dirlist->files[i];
 531                 if (!F_IS_ACTIVE(fp))
 532                         continue;
 533                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 534                         if (INFO_GTE(MOUNT, 1))
 535                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 536                                         f_name(fp, NULL));
 537                         continue;
 538                 }
 539                 /* Here we want to match regardless of file type.  Replacement
 540                  * of a file with one of another type is handled separately by
 541                  * a delete_item call with a DEL_MAKE_ROOM flag. */
 542                 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
 543                         int flags = DEL_RECURSE;
 544                         if (!(fp->mode & S_IWUSR) && !am_root && (uid_t)F_OWNER(fp) == our_uid)
 545                                 flags |= DEL_NO_UID_WRITE;
 546                         f_name(fp, delbuf);
 547                         if (delete_during == 2) {
 548                                 if (!remember_delete(fp, delbuf, flags))
 549                                         break;
 550                         } else
 551                                 delete_item(delbuf, fp->mode, flags);
 552                 }
 553         }
 554
 555         flist_free(dirlist);
 556
 557         if (!save_uid_ndx) {
 558                 --file_extra_cnt;
 559                 uid_ndx = 0;
 560         }
 561 }
 562
 563 /* This deletes any files on the receiving side that are not present on the
 564  * sending side.  This is used by --delete-before and --delete-after. */
 565 static void do_delete_pass(void)
 566 {
 567         char fbuf[MAXPATHLEN];
 568         STRUCT_STAT st;
 569         int j;
 570
 571         /* dry_run is incremented when the destination doesn't exist yet. */
 572         if (dry_run > 1 || list_only)
 573                 return;
 574
 575         for (j = 0; j < cur_flist->used; j++) {
 576                 struct file_struct *file = cur_flist->sorted[j];
 577
 578                 f_name(file, fbuf);
 579
 580                 if (!(file->flags & FLAG_CONTENT_DIR)) {
 581                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
 582                         continue;
 583                 }
 584
 585                 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
 586                         rprintf(FINFO, "deleting in %s\n", fbuf);
 587
 588                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 589                  || !S_ISDIR(st.st_mode))
 590                         continue;
 591
 592                 delete_in_dir(fbuf, file, &st.st_dev);
 593         }
 594         delete_in_dir(NULL, NULL, &dev_zero);
 595
 596         if (INFO_GTE(FLIST, 2) && !am_server)
 597                 rprintf(FINFO, "                    \r");
 598 }
 599
 600 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 601 {
 602 #if !defined HAVE_LUTIMES || !defined HAVE_UTIMES
 603         if (S_ISLNK(file->mode)) {
 604                 ;
 605         } else
 606 #endif
 607         if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
 608                 return 0;
 609
 610         if (preserve_perms) {
 611                 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 612                         return 0;
 613         } else if (preserve_executability
 614          && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 615                 return 0;
 616
 617         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 618                 return 0;
 619
 620         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 621                 return 0;
 622
 623 #ifdef SUPPORT_ACLS
 624         if (preserve_acls && !S_ISLNK(file->mode)) {
 625                 if (!ACL_READY(*sxp))
 626                         get_acl(fname, sxp);
 627                 if (set_acl(NULL, file, sxp) == 0)
 628                         return 0;
 629         }
 630 #endif
 631 #ifdef SUPPORT_XATTRS
 632         if (preserve_xattrs) {
 633                 if (!XATTR_READY(*sxp))
 634                         get_xattr(fname, sxp);
 635                 if (xattr_diff(file, sxp, 0))
 636                         return 0;
 637         }
 638 #endif
 639
 640         return 1;
 641 }
 642
 643 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 644              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 645              const char *xname)
 646 {
 647         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 648                 int keep_time = !preserve_times ? 0
 649                     : S_ISDIR(file->mode) ? preserve_times > 1 :
 650 #if defined HAVE_LUTIMES && defined HAVE_UTIMES
 651                     1;
 652 #else
 653                     !S_ISLNK(file->mode);
 654 #endif
 655
 656                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 657                         iflags |= ITEM_REPORT_SIZE;
 658                 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
 659                         if (iflags & ITEM_LOCAL_CHANGE)
 660                                 iflags |= symlink_timeset_failed_flags;
 661                 } else if (keep_time
 662                  ? cmp_time(file->modtime, sxp->st.st_mtime) != 0
 663                  : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
 664                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 665                         iflags |= ITEM_REPORT_TIME;
 666 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 667                 if (S_ISLNK(file->mode)) {
 668                         ;
 669                 } else
 670 #endif
 671                 if (preserve_perms) {
 672                         if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 673                                 iflags |= ITEM_REPORT_PERMS;
 674                 } else if (preserve_executability
 675                  && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 676                         iflags |= ITEM_REPORT_PERMS;
 677                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 678                         iflags |= ITEM_REPORT_OWNER;
 679                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 680                     && sxp->st.st_gid != (gid_t)F_GROUP(file))
 681                         iflags |= ITEM_REPORT_GROUP;
 682 #ifdef SUPPORT_ACLS
 683                 if (preserve_acls && !S_ISLNK(file->mode)) {
 684                         if (!ACL_READY(*sxp))
 685                                 get_acl(fnamecmp, sxp);
 686                         if (set_acl(NULL, file, sxp) == 0)
 687                                 iflags |= ITEM_REPORT_ACL;
 688                 }
 689 #endif
 690 #ifdef SUPPORT_XATTRS
 691                 if (preserve_xattrs) {
 692                         if (!XATTR_READY(*sxp))
 693                                 get_xattr(fnamecmp, sxp);
 694                         if (xattr_diff(file, sxp, 1))
 695                                 iflags |= ITEM_REPORT_XATTR;
 696                 }
 697 #endif
 698         } else {
 699 #ifdef SUPPORT_XATTRS
 700                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 701                         iflags |= ITEM_REPORT_XATTR;
 702 #endif
 703                 iflags |= ITEM_IS_NEW;
 704         }
 705
 706         iflags &= 0xffff;
 707         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
 708           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 709                 if (protocol_version >= 29) {
 710                         if (ndx >= 0)
 711                                 write_ndx(sock_f_out, ndx);
 712                         write_shortint(sock_f_out, iflags);
 713                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 714                                 write_byte(sock_f_out, fnamecmp_type);
 715                         if (iflags & ITEM_XNAME_FOLLOWS)
 716                                 write_vstring(sock_f_out, xname, strlen(xname));
 717 #ifdef SUPPORT_XATTRS
 718                         if (preserve_xattrs && !dry_run
 719                          && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
 720                                 send_xattr_request(NULL, file,
 721                                         iflags & ITEM_REPORT_XATTR ? sock_f_out : -1);
 722                         }
 723 #endif
 724                 } else if (ndx >= 0) {
 725                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 726                         log_item(code, file, &stats, iflags, xname);
 727                 }
 728         }
 729 }
 730
 731
 732 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 733 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 734 {
 735         if (st->st_size != F_LENGTH(file))
 736                 return 0;
 737
 738         /* if always checksum is set then we use the checksum instead
 739            of the file time to determine whether to sync */
 740         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 741                 char sum[MAX_DIGEST_LEN];
 742                 file_checksum(fn, sum, st->st_size);
 743                 return memcmp(sum, F_SUM(file), checksum_len) == 0;
 744         }
 745
 746         if (size_only > 0)
 747                 return 1;
 748
 749         if (ignore_times)
 750                 return 0;
 751
 752         return cmp_time(st->st_mtime, file->modtime) == 0;
 753 }
 754
 755
 756 /*
 757  * set (initialize) the size entries in the per-file sum_struct
 758  * calculating dynamic block and checksum sizes.
 759  *
 760  * This is only called from generate_and_send_sums() but is a separate
 761  * function to encapsulate the logic.
 762  *
 763  * The block size is a rounded square root of file length.
 764  *
 765  * The checksum size is determined according to:
 766  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 767  * provided by Donovan Baarda which gives a probability of rsync
 768  * algorithm corrupting data and falling back using the whole md4
 769  * checksums.
 770  *
 771  * This might be made one of several selectable heuristics.
 772  */
 773 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 774 {
 775         int32 blength;
 776         int s2length;
 777         int64 l;
 778
 779         if (block_size)
 780                 blength = block_size;
 781         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 782                 blength = BLOCK_SIZE;
 783         else {
 784                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
 785                 int32 c;
 786                 int cnt;
 787                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 788                 if (c < 0 || c >= max_blength)
 789                         blength = max_blength;
 790                 else {
 791                     blength = 0;
 792                     do {
 793                             blength |= c;
 794                             if (len < (int64)blength * blength)
 795                                     blength &= ~c;
 796                             c >>= 1;
 797                     } while (c >= 8);   /* round to multiple of 8 */
 798                     blength = MAX(blength, BLOCK_SIZE);
 799                 }
 800         }
 801
 802         if (protocol_version < 27) {
 803                 s2length = csum_length;
 804         } else if (csum_length == SUM_LENGTH) {
 805                 s2length = SUM_LENGTH;
 806         } else {
 807                 int32 c;
 808                 int b = BLOCKSUM_BIAS;
 809                 for (l = len; l >>= 1; b += 2) {}
 810                 for (c = blength; (c >>= 1) && b; b--) {}
 811                 /* add a bit, subtract rollsum, round up. */
 812                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 813                 s2length = MAX(s2length, csum_length);
 814                 s2length = MIN(s2length, SUM_LENGTH);
 815         }
 816
 817         sum->flength    = len;
 818         sum->blength    = blength;
 819         sum->s2length   = s2length;
 820         sum->remainder  = (int32)(len % blength);
 821         sum->count      = (int32)(l = (len / blength) + (sum->remainder != 0));
 822
 823         if ((int64)sum->count != l)
 824                 sum->count = -1;
 825
 826         if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
 827                 rprintf(FINFO,
 828                         "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
 829                         big_num(sum->count), (long)sum->remainder, (long)sum->blength,
 830                         sum->s2length, big_num(sum->flength));
 831         }
 832 }
 833
 834
 835 /*
 836  * Generate and send a stream of signatures/checksums that describe a buffer
 837  *
 838  * Generate approximately one checksum every block_len bytes.
 839  */
 840 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 841 {
 842         int32 i;
 843         struct map_struct *mapbuf;
 844         struct sum_struct sum;
 845         OFF_T offset = 0;
 846
 847         sum_sizes_sqroot(&sum, len);
 848         if (sum.count < 0)
 849                 return -1;
 850         write_sum_head(f_out, &sum);
 851
 852         if (append_mode > 0 && f_copy < 0)
 853                 return 0;
 854
 855         if (len > 0)
 856                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 857         else
 858                 mapbuf = NULL;
 859
 860         for (i = 0; i < sum.count; i++) {
 861                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 862                 char *map = map_ptr(mapbuf, offset, n1);
 863                 char sum2[SUM_LENGTH];
 864                 uint32 sum1;
 865
 866                 len -= n1;
 867                 offset += n1;
 868
 869                 if (f_copy >= 0) {
 870                         full_write(f_copy, map, n1);
 871                         if (append_mode > 0)
 872                                 continue;
 873                 }
 874
 875                 sum1 = get_checksum1(map, n1);
 876                 get_checksum2(map, n1, sum2);
 877
 878                 if (DEBUG_GTE(DELTASUM, 3)) {
 879                         rprintf(FINFO,
 880                                 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
 881                                 big_num(i), big_num(offset - n1), (long)n1,
 882                                 (unsigned long)sum1);
 883                 }
 884                 write_int(f_out, sum1);
 885                 write_buf(f_out, sum2, sum.s2length);
 886         }
 887
 888         if (mapbuf)
 889                 unmap_file(mapbuf);
 890
 891         return 0;
 892 }
 893
 894
 895 /* Try to find a filename in the same dir as "fname" with a similar name. */
 896 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 897 {
 898         int fname_len, fname_suf_len;
 899         const char *fname_suf, *fname = file->basename;
 900         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 901         int j, lowest_j = -1;
 902
 903         fname_len = strlen(fname);
 904         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 905
 906         for (j = 0; j < dirlist->used; j++) {
 907                 struct file_struct *fp = dirlist->files[j];
 908                 const char *suf, *name;
 909                 int len, suf_len;
 910                 uint32 dist;
 911
 912                 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
 913                  || fp->flags & FLAG_FILE_SENT)
 914                         continue;
 915
 916                 name = fp->basename;
 917
 918                 if (F_LENGTH(fp) == F_LENGTH(file)
 919                     && cmp_time(fp->modtime, file->modtime) == 0) {
 920                         if (DEBUG_GTE(FUZZY, 2)) {
 921                                 rprintf(FINFO,
 922                                         "fuzzy size/modtime match for %s\n",
 923                                         name);
 924                         }
 925                         return j;
 926                 }
 927
 928                 len = strlen(name);
 929                 suf = find_filename_suffix(name, len, &suf_len);
 930
 931                 dist = fuzzy_distance(name, len, fname, fname_len);
 932                 /* Add some extra weight to how well the suffixes match. */
 933                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 934                       * 10;
 935                 if (DEBUG_GTE(FUZZY, 2)) {
 936                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 937                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 938                 }
 939                 if (dist <= lowest_dist) {
 940                         lowest_dist = dist;
 941                         lowest_j = j;
 942                 }
 943         }
 944
 945         return lowest_j;
 946 }
 947
 948 /* Copy a file found in our --copy-dest handling. */
 949 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 950 {
 951         char buf[MAXPATHLEN];
 952         const char *copy_to, *partialptr;
 953         int save_preserve_xattrs = preserve_xattrs;
 954         int ok, fd_w;
 955
 956         if (inplace) {
 957                 /* Let copy_file open the destination in place. */
 958                 fd_w = -1;
 959                 copy_to = dest;
 960         } else {
 961                 fd_w = open_tmpfile(buf, dest, file);
 962                 if (fd_w < 0)
 963                         return -1;
 964                 copy_to = buf;
 965         }
 966         cleanup_set(copy_to, NULL, NULL, -1, -1);
 967         if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
 968                 if (INFO_GTE(COPY, 1)) {
 969                         rsyserr(FINFO, errno, "copy_file %s => %s",
 970                                 full_fname(src), copy_to);
 971                 }
 972                 /* Try to clean up. */
 973                 unlink(copy_to);
 974                 cleanup_disable();
 975                 return -1;
 976         }
 977         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 978         preserve_xattrs = 0; /* xattrs were copied with file */
 979         ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 980         preserve_xattrs = save_preserve_xattrs;
 981         cleanup_disable();
 982         return ok ? 0 : -1;
 983 }
 984
 985 /* This is only called for regular files.  We return -2 if we've finished
 986  * handling the file, -1 if no dest-linking occurred, or a non-negative
 987  * value if we found an alternate basis file. */
 988 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 989                          char *cmpbuf, stat_x *sxp, int itemizing,
 990                          enum logcode code)
 991 {
 992         int best_match = -1;
 993         int match_level = 0;
 994         int j = 0;
 995
 996         do {
 997                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 998                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 999                         continue;
1000                 switch (match_level) {
1001                 case 0:
1002                         best_match = j;
1003                         match_level = 1;
1004                         /* FALL THROUGH */
1005                 case 1:
1006                         if (!unchanged_file(cmpbuf, file, &sxp->st))
1007                                 continue;
1008                         best_match = j;
1009                         match_level = 2;
1010                         /* FALL THROUGH */
1011                 case 2:
1012                         if (!unchanged_attrs(cmpbuf, file, sxp))
1013                                 continue;
1014                         best_match = j;
1015                         match_level = 3;
1016                         break;
1017                 }
1018                 break;
1019         } while (basis_dir[++j] != NULL);
1020
1021         if (!match_level)
1022                 return -1;
1023
1024         if (j != best_match) {
1025                 j = best_match;
1026                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1027                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1028                         return -1;
1029         }
1030
1031         if (match_level == 3 && !copy_dest) {
1032 #ifdef SUPPORT_HARD_LINKS
1033                 if (link_dest) {
1034                         if (!hard_link_one(file, fname, cmpbuf, 1))
1035                                 goto try_a_copy;
1036                         if (preserve_hard_links && F_IS_HLINKED(file))
1037                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
1038                         if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1039                                 itemize(cmpbuf, file, ndx, 1, sxp,
1040                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
1041                                         0, "");
1042                         }
1043                 } else
1044 #endif
1045                 if (itemizing)
1046                         itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
1047                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
1048                         rprintf(FCLIENT, "%s is uptodate\n", fname);
1049                 return -2;
1050         }
1051
1052         if (match_level >= 2) {
1053 #ifdef SUPPORT_HARD_LINKS
1054           try_a_copy: /* Copy the file locally. */
1055 #endif
1056                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
1057                         return -1;
1058                 if (itemizing)
1059                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
1060                 if (maybe_ATTRS_REPORT
1061                  && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
1062                   || (INFO_GTE(NAME, 2) && match_level == 3))) {
1063                         code = match_level == 3 ? FCLIENT : FINFO;
1064                         rprintf(code, "%s%s\n", fname,
1065                                 match_level == 3 ? " is uptodate" : "");
1066                 }
1067 #ifdef SUPPORT_HARD_LINKS
1068                 if (preserve_hard_links && F_IS_HLINKED(file))
1069                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
1070 #endif
1071                 return -2;
1072         }
1073
1074         return FNAMECMP_BASIS_DIR_LOW + j;
1075 }
1076
1077 /* This is only called for non-regular files.  We return -2 if we've finished
1078  * handling the file, or -1 if no dest-linking occurred, or a non-negative
1079  * value if we found an alternate basis file. */
1080 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
1081                          char *cmpbuf, stat_x *sxp, int itemizing,
1082                          enum logcode code)
1083 {
1084         char lnk[MAXPATHLEN];
1085         int best_match = -1;
1086         int match_level = 0;
1087         enum nonregtype type;
1088         uint32 *devp;
1089         int len, j = 0;
1090
1091 #ifndef SUPPORT_LINKS
1092         if (S_ISLNK(file->mode))
1093                 return -1;
1094 #endif
1095         if (S_ISDIR(file->mode)) {
1096                 type = TYPE_DIR;
1097         } else if (IS_SPECIAL(file->mode))
1098                 type = TYPE_SPECIAL;
1099         else if (IS_DEVICE(file->mode))
1100                 type = TYPE_DEVICE;
1101 #ifdef SUPPORT_LINKS
1102         else if (S_ISLNK(file->mode))
1103                 type = TYPE_SYMLINK;
1104 #endif
1105         else {
1106                 rprintf(FERROR,
1107                         "internal: try_dests_non() called with invalid mode (%o)\n",
1108                         (int)file->mode);
1109                 exit_cleanup(RERR_UNSUPPORTED);
1110         }
1111
1112         do {
1113                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1114                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1115                         continue;
1116                 switch (type) {
1117                 case TYPE_DIR:
1118                         if (!S_ISDIR(sxp->st.st_mode))
1119                                 continue;
1120                         break;
1121                 case TYPE_SPECIAL:
1122                         if (!IS_SPECIAL(sxp->st.st_mode))
1123                                 continue;
1124                         break;
1125                 case TYPE_DEVICE:
1126                         if (!IS_DEVICE(sxp->st.st_mode))
1127                                 continue;
1128                         break;
1129 #ifdef SUPPORT_LINKS
1130                 case TYPE_SYMLINK:
1131                         if (!S_ISLNK(sxp->st.st_mode))
1132                                 continue;
1133                         break;
1134 #endif
1135                 }
1136                 if (match_level < 1) {
1137                         match_level = 1;
1138                         best_match = j;
1139                 }
1140                 switch (type) {
1141                 case TYPE_DIR:
1142                         break;
1143                 case TYPE_SPECIAL:
1144                 case TYPE_DEVICE:
1145                         devp = F_RDEV_P(file);
1146                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1147                                 continue;
1148                         break;
1149 #ifdef SUPPORT_LINKS
1150                 case TYPE_SYMLINK:
1151                         if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1152                                 continue;
1153                         lnk[len] = '\0';
1154                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1155                                 continue;
1156                         break;
1157 #endif
1158                 }
1159                 if (match_level < 2) {
1160                         match_level = 2;
1161                         best_match = j;
1162                 }
1163                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1164                         match_level = 3;
1165                         best_match = j;
1166                         break;
1167                 }
1168         } while (basis_dir[++j] != NULL);
1169
1170         if (!match_level)
1171                 return -1;
1172
1173         if (j != best_match) {
1174                 j = best_match;
1175                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1176                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1177                         return -1;
1178         }
1179
1180         if (match_level == 3) {
1181 #ifdef SUPPORT_HARD_LINKS
1182                 if (link_dest
1183 #ifndef CAN_HARDLINK_SYMLINK
1184                  && !S_ISLNK(file->mode)
1185 #endif
1186 #ifndef CAN_HARDLINK_SPECIAL
1187                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1188 #endif
1189                  && !S_ISDIR(file->mode)) {
1190                         if (do_link(cmpbuf, fname) < 0) {
1191                                 rsyserr(FERROR_XFER, errno,
1192                                         "failed to hard-link %s with %s",
1193                                         cmpbuf, fname);
1194                                 return j;
1195                         }
1196                         if (preserve_hard_links && F_IS_HLINKED(file))
1197                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1198                 } else
1199 #endif
1200                         match_level = 2;
1201                 if (itemizing && stdout_format_has_i
1202                  && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1203                         int chg = compare_dest && type != TYPE_DIR ? 0
1204                             : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1205                         char *lp = match_level == 3 ? "" : NULL;
1206                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1207                 }
1208                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1209                         rprintf(FCLIENT, "%s%s is uptodate\n",
1210                                 fname, type == TYPE_DIR ? "/" : "");
1211                 }
1212                 return -2;
1213         }
1214
1215         return j;
1216 }
1217
1218 static void list_file_entry(struct file_struct *f)
1219 {
1220         char permbuf[PERMSTRING_SIZE];
1221         int64 len;
1222         int colwidth = human_readable ? 14 : 11;
1223
1224         if (!F_IS_ACTIVE(f)) {
1225                 /* this can happen if duplicate names were removed */
1226                 return;
1227         }
1228
1229         permstring(permbuf, f->mode);
1230         len = F_LENGTH(f);
1231
1232         /* TODO: indicate '+' if the entry has an ACL. */
1233
1234 #ifdef SUPPORT_LINKS
1235         if (preserve_links && S_ISLNK(f->mode)) {
1236                 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1237                         permbuf, colwidth, comma_num(len),
1238                         timestring(f->modtime), f_name(f, NULL),
1239                         F_SYMLINK(f));
1240         } else
1241 #endif
1242         {
1243                 rprintf(FINFO, "%s %*s %s %s\n",
1244                         permbuf, colwidth, comma_num(len),
1245                         timestring(f->modtime), f_name(f, NULL));
1246         }
1247 }
1248
1249 static int phase = 0;
1250 static int dflt_perms;
1251
1252 static int implied_dirs_are_missing;
1253 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1254 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1255 {
1256         return F_DEPTH(file) > F_DEPTH(subtree)
1257                 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1258 }
1259
1260 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1261  * make sure it exists, and has the right permissions/timestamp info.  For
1262  * all other non-regular files (symlinks, etc.) we create them here.  For
1263  * regular files that have changed, we try to find a basis file and then
1264  * start sending checksums.  The ndx is the file's unique index value.
1265  *
1266  * The fname parameter must point to a MAXPATHLEN buffer!  (e.g it gets
1267  * passed to delete_item(), which can use it during a recursive delete.)
1268  *
1269  * Note that f_out is set to -1 when doing final directory-permission and
1270  * modification-time repair. */
1271 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1272                            int itemizing, enum logcode code, int f_out)
1273 {
1274         static const char *parent_dirname = "";
1275         /* Missing dir not created due to --dry-run; will still be scanned. */
1276         static struct file_struct *dry_missing_dir = NULL;
1277         /* Missing dir whose contents are skipped altogether due to
1278          * --ignore-non-existing, daemon exclude, or mkdir failure. */
1279         static struct file_struct *skip_dir = NULL;
1280         static struct file_list *fuzzy_dirlist = NULL;
1281         static int need_fuzzy_dirlist = 0;
1282         struct file_struct *fuzzy_file = NULL;
1283         int fd = -1, f_copy = -1;
1284         stat_x sx, real_sx;
1285         STRUCT_STAT partial_st;
1286         struct file_struct *back_file = NULL;
1287         int statret, real_ret, stat_errno;
1288         char *fnamecmp, *partialptr, *backupptr = NULL;
1289         char fnamecmpbuf[MAXPATHLEN];
1290         uchar fnamecmp_type;
1291         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1292         int is_dir = !S_ISDIR(file->mode) ? 0
1293                    : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1294                    : 1;
1295
1296         if (DEBUG_GTE(GENR, 1))
1297                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1298
1299         if (list_only) {
1300                 if (is_dir < 0
1301                  || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1302                         return;
1303                 list_file_entry(file);
1304                 return;
1305         }
1306
1307         if (skip_dir) {
1308                 if (is_below(file, skip_dir)) {
1309                         if (is_dir)
1310                                 file->flags |= FLAG_MISSING_DIR;
1311 #ifdef SUPPORT_HARD_LINKS
1312                         else if (F_IS_HLINKED(file))
1313                                 handle_skipped_hlink(file, itemizing, code, f_out);
1314 #endif
1315                         return;
1316                 }
1317                 skip_dir = NULL;
1318         }
1319
1320         if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1321                 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1322                         if (is_dir < 0)
1323                                 return;
1324 #ifdef SUPPORT_HARD_LINKS
1325                         if (F_IS_HLINKED(file))
1326                                 handle_skipped_hlink(file, itemizing, code, f_out);
1327 #endif
1328                         rprintf(FERROR_XFER,
1329                                 "skipping daemon-excluded %s \"%s\"\n",
1330                                 is_dir ? "directory" : "file", fname);
1331                         if (is_dir)
1332                                 goto skipping_dir_contents;
1333                         return;
1334                 }
1335         }
1336
1337         init_stat_x(&sx);
1338         if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1339           parent_is_dry_missing:
1340                 if (fuzzy_dirlist) {
1341                         flist_free(fuzzy_dirlist);
1342                         fuzzy_dirlist = NULL;
1343                 }
1344                 parent_dirname = "";
1345                 statret = -1;
1346                 stat_errno = ENOENT;
1347         } else {
1348                 const char *dn = file->dirname ? file->dirname : ".";
1349                 dry_missing_dir = NULL;
1350                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1351                         if (relative_paths && !implied_dirs
1352                          && do_stat(dn, &sx.st) < 0) {
1353                                 if (dry_run)
1354                                         goto parent_is_dry_missing;
1355                                 if (create_directory_path(fname) < 0) {
1356                                         rsyserr(FERROR_XFER, errno,
1357                                                 "recv_generator: mkdir %s failed",
1358                                                 full_fname(dn));
1359                                 }
1360                         }
1361                         if (fuzzy_dirlist) {
1362                                 flist_free(fuzzy_dirlist);
1363                                 fuzzy_dirlist = NULL;
1364                         }
1365                         if (fuzzy_basis)
1366                                 need_fuzzy_dirlist = 1;
1367 #ifdef SUPPORT_ACLS
1368                         if (!preserve_perms)
1369                                 dflt_perms = default_perms_for_dir(dn);
1370 #endif
1371                 }
1372                 parent_dirname = dn;
1373
1374                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1375                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1376                         fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1377                         need_fuzzy_dirlist = 0;
1378                 }
1379
1380                 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1381                 stat_errno = errno;
1382         }
1383
1384         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1385                 if (is_dir) {
1386                         if (is_dir < 0)
1387                                 return;
1388                         skip_dir = file;
1389                         file->flags |= FLAG_MISSING_DIR;
1390                 }
1391 #ifdef SUPPORT_HARD_LINKS
1392                 else if (F_IS_HLINKED(file))
1393                         handle_skipped_hlink(file, itemizing, code, f_out);
1394 #endif
1395                 if (INFO_GTE(SKIP, 1)) {
1396                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1397                                 is_dir ? "directory" : "file", fname);
1398                 }
1399                 return;
1400         }
1401
1402         if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1403          && !am_root && sx.st.st_uid == our_uid)
1404                 del_opts |= DEL_NO_UID_WRITE;
1405
1406         if (ignore_existing > 0 && statret == 0
1407          && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1408                 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1409                         rprintf(FINFO, "%s exists\n", fname);
1410 #ifdef SUPPORT_HARD_LINKS
1411                 if (F_IS_HLINKED(file))
1412                         handle_skipped_hlink(file, itemizing, code, f_out);
1413 #endif
1414                 goto cleanup;
1415         }
1416
1417         if (is_dir) {
1418                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1419                         goto cleanup;
1420                 if (is_dir < 0) {
1421                         /* In inc_recurse mode we want to make sure any missing
1422                          * directories get created while we're still processing
1423                          * the parent dir (which allows us to touch the parent
1424                          * dir's mtime right away).  We will handle the dir in
1425                          * full later (right before we handle its contents). */
1426                         if (statret == 0
1427                          && (S_ISDIR(sx.st.st_mode)
1428                           || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1429                                 goto cleanup; /* Any errors get reported later. */
1430                         if (do_mkdir(fname, file->mode & 0700) == 0)
1431                                 file->flags |= FLAG_DIR_CREATED;
1432                         goto cleanup;
1433                 }
1434                 /* The file to be received is a directory, so we need
1435                  * to prepare appropriately.  If there is already a
1436                  * file of that name and it is *not* a directory, then
1437                  * we need to delete it.  If it doesn't exist, then
1438                  * (perhaps recursively) create it. */
1439                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1440                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1441                                 goto skipping_dir_contents;
1442                         statret = -1;
1443                 }
1444                 if (dry_run && statret != 0) {
1445                         if (!dry_missing_dir)
1446                                 dry_missing_dir = file;
1447                         file->flags |= FLAG_MISSING_DIR;
1448                 }
1449                 real_ret = statret;
1450                 real_sx = sx;
1451                 if (file->flags & FLAG_DIR_CREATED)
1452                         statret = -1;
1453                 if (!preserve_perms) { /* See comment in non-dir code below. */
1454                         file->mode = dest_mode(file->mode, sx.st.st_mode,
1455                                                dflt_perms, statret == 0);
1456                 }
1457                 if (statret != 0 && basis_dir[0] != NULL) {
1458                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1459                                               itemizing, code);
1460                         if (j == -2) {
1461                                 itemizing = 0;
1462                                 code = FNONE;
1463                                 statret = 1;
1464                         } else if (j >= 0)
1465                                 statret = 1;
1466                 }
1467                 if (itemizing && f_out != -1) {
1468                         itemize(fname, file, ndx, statret, &sx,
1469                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1470                 }
1471                 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1472                         if (!relative_paths || errno != ENOENT
1473                             || create_directory_path(fname) < 0
1474                             || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1475                                 rsyserr(FERROR_XFER, errno,
1476                                         "recv_generator: mkdir %s failed",
1477                                         full_fname(fname));
1478                           skipping_dir_contents:
1479                                 rprintf(FERROR,
1480                                     "*** Skipping any contents from this failed directory ***\n");
1481                                 skip_dir = file;
1482                                 file->flags |= FLAG_MISSING_DIR;
1483                                 goto cleanup;
1484                         }
1485                 }
1486 #ifdef SUPPORT_XATTRS
1487                 if (preserve_xattrs && statret == 1)
1488                         copy_xattrs(fnamecmpbuf, fname);
1489 #endif
1490                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1491                     && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1492                         rprintf(code, "%s/\n", fname);
1493
1494                 /* We need to ensure that the dirs in the transfer have writable
1495                  * permissions during the time we are putting files within them.
1496                  * This is then fixed after the transfer is done. */
1497 #ifdef HAVE_CHMOD
1498                 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1499                         mode_t mode = file->mode | S_IWUSR;
1500                         if (do_chmod(fname, mode) < 0) {
1501                                 rsyserr(FERROR_XFER, errno,
1502                                         "failed to modify permissions on %s",
1503                                         full_fname(fname));
1504                         }
1505                         need_retouch_dir_perms = 1;
1506                 }
1507 #endif
1508
1509                 if (real_ret != 0 && one_file_system)
1510                         real_sx.st.st_dev = filesystem_dev;
1511                 if (inc_recurse) {
1512                         if (one_file_system) {
1513                                 uint32 *devp = F_DIR_DEV_P(file);
1514                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1515                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1516                         }
1517                 }
1518                 else if (delete_during && f_out != -1 && !phase
1519                     && !(file->flags & FLAG_MISSING_DIR)) {
1520                         if (file->flags & FLAG_CONTENT_DIR)
1521                                 delete_in_dir(fname, file, &real_sx.st.st_dev);
1522                         else
1523                                 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1524                 }
1525                 goto cleanup;
1526         }
1527
1528         /* If we're not preserving permissions, change the file-list's
1529          * mode based on the local permissions and some heuristics. */
1530         if (!preserve_perms) {
1531                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1532                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1533                                        exists);
1534         }
1535
1536 #ifdef SUPPORT_HARD_LINKS
1537         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1538          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1539                 goto cleanup;
1540 #endif
1541
1542         if (preserve_links && S_ISLNK(file->mode)) {
1543 #ifdef SUPPORT_LINKS
1544                 const char *sl = F_SYMLINK(file);
1545                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1546                         if (INFO_GTE(NAME, 1)) {
1547                                 if (solo_file)
1548                                         fname = f_name(file, NULL);
1549                                 rprintf(FINFO,
1550                                         "ignoring unsafe symlink %s -> \"%s\"\n",
1551                                         full_fname(fname), sl);
1552                         }
1553                         return;
1554                 }
1555                 if (statret == 0) {
1556                         char lnk[MAXPATHLEN];
1557                         int len;
1558
1559                         if (!S_ISLNK(sx.st.st_mode))
1560                                 statret = -1;
1561                         else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1562                               && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1563                                 /* The link is pointing to the right place. */
1564                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1565                                 if (itemizing)
1566                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1567 #if defined SUPPORT_HARD_LINKS && defined CAN_HARDLINK_SYMLINK
1568                                 if (preserve_hard_links && F_IS_HLINKED(file))
1569                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1570 #endif
1571                                 if (remove_source_files == 1)
1572                                         goto return_with_success;
1573                                 goto cleanup;
1574                         }
1575                         /* Not the right symlink (or not a symlink), so
1576                          * delete it. */
1577                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_SYMLINK) != 0)
1578                                 goto cleanup;
1579                 } else if (basis_dir[0] != NULL) {
1580                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1581                                               itemizing, code);
1582                         if (j == -2) {
1583 #ifndef CAN_HARDLINK_SYMLINK
1584                                 if (link_dest) {
1585                                         /* Resort to --copy-dest behavior. */
1586                                 } else
1587 #endif
1588                                 if (!copy_dest)
1589                                         goto cleanup;
1590                                 itemizing = 0;
1591                                 code = FNONE;
1592                         } else if (j >= 0)
1593                                 statret = 1;
1594                 }
1595 #ifdef SUPPORT_HARD_LINKS
1596                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1597                         cur_flist->in_progress++;
1598                         goto cleanup;
1599                 }
1600 #endif
1601                 if (do_symlink(sl, fname) != 0) {
1602                         rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1603                                 full_fname(fname), sl);
1604                 } else {
1605                         set_file_attrs(fname, file, NULL, NULL, 0);
1606                         if (itemizing) {
1607                                 itemize(fname, file, ndx, statret, &sx,
1608                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1609                         }
1610                         if (code != FNONE && INFO_GTE(NAME, 1))
1611                                 rprintf(code, "%s -> %s\n", fname, sl);
1612 #ifdef SUPPORT_HARD_LINKS
1613                         if (preserve_hard_links && F_IS_HLINKED(file))
1614                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1615 #endif
1616                         /* This does not check remove_source_files == 1
1617                          * because this is one of the items that the old
1618                          * --remove-sent-files option would remove. */
1619                         if (remove_source_files)
1620                                 goto return_with_success;
1621                 }
1622 #endif
1623                 goto cleanup;
1624         }
1625
1626         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1627          || (preserve_specials && IS_SPECIAL(file->mode))) {
1628                 uint32 *devp = F_RDEV_P(file);
1629                 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1630                 if (statret == 0) {
1631                         int del_for_flag;
1632                         if (IS_DEVICE(file->mode)) {
1633                                 if (!IS_DEVICE(sx.st.st_mode))
1634                                         statret = -1;
1635                                 del_for_flag = DEL_FOR_DEVICE;
1636                         } else {
1637                                 if (!IS_SPECIAL(sx.st.st_mode))
1638                                         statret = -1;
1639                                 del_for_flag = DEL_FOR_SPECIAL;
1640                         }
1641                         if (statret == 0
1642                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1643                          && sx.st.st_rdev == rdev) {
1644                                 /* The device or special file is identical. */
1645                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1646                                 if (itemizing)
1647                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1648 #ifdef SUPPORT_HARD_LINKS
1649                                 if (preserve_hard_links && F_IS_HLINKED(file))
1650                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1651 #endif
1652                                 if (remove_source_files == 1)
1653                                         goto return_with_success;
1654                                 goto cleanup;
1655                         }
1656                         if (delete_item(fname, sx.st.st_mode, del_opts | del_for_flag) != 0)
1657                                 goto cleanup;
1658                 } else if (basis_dir[0] != NULL) {
1659                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1660                                               itemizing, code);
1661                         if (j == -2) {
1662 #ifndef CAN_HARDLINK_SPECIAL
1663                                 if (link_dest) {
1664                                         /* Resort to --copy-dest behavior. */
1665                                 } else
1666 #endif
1667                                 if (!copy_dest)
1668                                         goto cleanup;
1669                                 itemizing = 0;
1670                                 code = FNONE;
1671                         } else if (j >= 0)
1672                                 statret = 1;
1673                 }
1674 #ifdef SUPPORT_HARD_LINKS
1675                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1676                         cur_flist->in_progress++;
1677                         goto cleanup;
1678                 }
1679 #endif
1680                 if (DEBUG_GTE(GENR, 1)) {
1681                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1682                                 fname, (int)file->mode,
1683                                 (long)major(rdev), (long)minor(rdev));
1684                 }
1685                 if (do_mknod(fname, file->mode, rdev) < 0) {
1686                         rsyserr(FERROR_XFER, errno, "mknod %s failed",
1687                                 full_fname(fname));
1688                 } else {
1689                         set_file_attrs(fname, file, NULL, NULL, 0);
1690                         if (itemizing) {
1691                                 itemize(fname, file, ndx, statret, &sx,
1692                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1693                         }
1694                         if (code != FNONE && INFO_GTE(NAME, 1))
1695                                 rprintf(code, "%s\n", fname);
1696 #ifdef SUPPORT_HARD_LINKS
1697                         if (preserve_hard_links && F_IS_HLINKED(file))
1698                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1699 #endif
1700                         if (remove_source_files == 1)
1701                                 goto return_with_success;
1702                 }
1703                 goto cleanup;
1704         }
1705
1706         if (!S_ISREG(file->mode)) {
1707                 if (solo_file)
1708                         fname = f_name(file, NULL);
1709                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1710                 goto cleanup;
1711         }
1712
1713         if (max_size > 0 && F_LENGTH(file) > max_size) {
1714                 if (INFO_GTE(SKIP, 1)) {
1715                         if (solo_file)
1716                                 fname = f_name(file, NULL);
1717                         rprintf(FINFO, "%s is over max-size\n", fname);
1718                 }
1719                 goto cleanup;
1720         }
1721         if (min_size > 0 && F_LENGTH(file) < min_size) {
1722                 if (INFO_GTE(SKIP, 1)) {
1723                         if (solo_file)
1724                                 fname = f_name(file, NULL);
1725                         rprintf(FINFO, "%s is under min-size\n", fname);
1726                 }
1727                 goto cleanup;
1728         }
1729
1730         if (update_only > 0 && statret == 0
1731             && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1732                 if (INFO_GTE(SKIP, 1))
1733                         rprintf(FINFO, "%s is newer\n", fname);
1734 #ifdef SUPPORT_HARD_LINKS
1735                 if (F_IS_HLINKED(file))
1736                         handle_skipped_hlink(file, itemizing, code, f_out);
1737 #endif
1738                 goto cleanup;
1739         }
1740
1741         fnamecmp = fname;
1742         fnamecmp_type = FNAMECMP_FNAME;
1743
1744         if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1745                 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1746                         goto cleanup;
1747                 statret = -1;
1748                 stat_errno = ENOENT;
1749         }
1750
1751         if (statret != 0 && basis_dir[0] != NULL) {
1752                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1753                                       itemizing, code);
1754                 if (j == -2) {
1755                         if (remove_source_files == 1)
1756                                 goto return_with_success;
1757                         goto cleanup;
1758                 }
1759                 if (j >= 0) {
1760                         fnamecmp = fnamecmpbuf;
1761                         fnamecmp_type = j;
1762                         statret = 0;
1763                 }
1764         }
1765
1766         real_ret = statret;
1767         real_sx = sx;
1768
1769         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1770             && link_stat(partialptr, &partial_st, 0) == 0
1771             && S_ISREG(partial_st.st_mode)) {
1772                 if (statret != 0)
1773                         goto prepare_to_open;
1774         } else
1775                 partialptr = NULL;
1776
1777         if (statret != 0 && fuzzy_dirlist) {
1778                 int j = find_fuzzy(file, fuzzy_dirlist);
1779                 if (j >= 0) {
1780                         fuzzy_file = fuzzy_dirlist->files[j];
1781                         f_name(fuzzy_file, fnamecmpbuf);
1782                         if (DEBUG_GTE(FUZZY, 1)) {
1783                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1784                                         fname, fnamecmpbuf);
1785                         }
1786                         sx.st.st_size = F_LENGTH(fuzzy_file);
1787                         statret = 0;
1788                         fnamecmp = fnamecmpbuf;
1789                         fnamecmp_type = FNAMECMP_FUZZY;
1790                 }
1791         }
1792
1793         if (statret != 0) {
1794 #ifdef SUPPORT_HARD_LINKS
1795                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1796                         cur_flist->in_progress++;
1797                         goto cleanup;
1798                 }
1799 #endif
1800                 if (stat_errno == ENOENT)
1801                         goto notify_others;
1802                 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1803                         full_fname(fname));
1804                 goto cleanup;
1805         }
1806
1807         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1808                 ;
1809         else if (fnamecmp_type == FNAMECMP_FUZZY)
1810                 ;
1811         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1812                 if (partialptr) {
1813                         do_unlink(partialptr);
1814                         handle_partial_dir(partialptr, PDIR_DELETE);
1815                 }
1816                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1817                 if (itemizing)
1818                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1819 #ifdef SUPPORT_HARD_LINKS
1820                 if (preserve_hard_links && F_IS_HLINKED(file))
1821                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1822 #endif
1823                 if (remove_source_files != 1)
1824                         goto cleanup;
1825           return_with_success:
1826                 if (!dry_run)
1827                         send_msg_int(MSG_SUCCESS, ndx);
1828                 goto cleanup;
1829         }
1830
1831         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1832 #ifdef SUPPORT_HARD_LINKS
1833                 if (F_IS_HLINKED(file))
1834                         handle_skipped_hlink(file, itemizing, code, f_out);
1835 #endif
1836                 goto cleanup;
1837         }
1838
1839   prepare_to_open:
1840         if (partialptr) {
1841                 sx.st = partial_st;
1842                 fnamecmp = partialptr;
1843                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1844                 statret = 0;
1845         }
1846
1847         if (!do_xfers)
1848                 goto notify_others;
1849
1850         if (read_batch || whole_file) {
1851                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1852                         if (!(backupptr = get_backup_name(fname)))
1853                                 goto cleanup;
1854                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1855                                 goto pretend_missing;
1856                         if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1857                                 unmake_file(back_file);
1858                                 back_file = NULL;
1859                                 goto cleanup;
1860                         }
1861                 }
1862                 goto notify_others;
1863         }
1864
1865         if (fuzzy_dirlist) {
1866                 int j = flist_find(fuzzy_dirlist, file);
1867                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1868                         fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1869         }
1870
1871         /* open the file */
1872         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1873                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1874                         full_fname(fnamecmp));
1875           pretend_missing:
1876                 /* pretend the file didn't exist */
1877 #ifdef SUPPORT_HARD_LINKS
1878                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1879                         cur_flist->in_progress++;
1880                         goto cleanup;
1881                 }
1882 #endif
1883                 statret = real_ret = -1;
1884                 goto notify_others;
1885         }
1886
1887         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1888                 if (!(backupptr = get_backup_name(fname))) {
1889                         close(fd);
1890                         goto cleanup;
1891                 }
1892                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1893                         close(fd);
1894                         goto pretend_missing;
1895                 }
1896                 if (robust_unlink(backupptr) && errno != ENOENT) {
1897                         rsyserr(FERROR_XFER, errno, "unlink %s",
1898                                 full_fname(backupptr));
1899                         unmake_file(back_file);
1900                         back_file = NULL;
1901                         close(fd);
1902                         goto cleanup;
1903                 }
1904                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1905                         int save_errno = errno ? errno : EINVAL; /* 0 paranoia */
1906                         if (errno == ENOENT && make_bak_dir(backupptr) == 0) {
1907                                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)
1908                                         save_errno = errno ? errno : save_errno;
1909                                 else
1910                                         save_errno = 0;
1911                         }
1912                         if (save_errno) {
1913                                 rsyserr(FERROR_XFER, save_errno, "open %s", full_fname(backupptr));
1914                                 unmake_file(back_file);
1915                                 back_file = NULL;
1916                                 close(fd);
1917                                 goto cleanup;
1918                         }
1919                 }
1920                 fnamecmp_type = FNAMECMP_BACKUP;
1921         }
1922
1923         if (DEBUG_GTE(DELTASUM, 3)) {
1924                 rprintf(FINFO, "gen mapped %s of size %s\n",
1925                         fnamecmp, big_num(sx.st.st_size));
1926         }
1927
1928         if (DEBUG_GTE(DELTASUM, 2))
1929                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1930
1931   notify_others:
1932         if (remove_source_files && !delay_updates && !phase && !dry_run)
1933                 increment_active_files(ndx, itemizing, code);
1934         if (inc_recurse && !dry_run)
1935                 cur_flist->in_progress++;
1936 #ifdef SUPPORT_HARD_LINKS
1937         if (preserve_hard_links && F_IS_HLINKED(file))
1938                 file->flags |= FLAG_FILE_SENT;
1939 #endif
1940         write_ndx(f_out, ndx);
1941         if (itemizing) {
1942                 int iflags = ITEM_TRANSFER;
1943                 if (always_checksum > 0)
1944                         iflags |= ITEM_REPORT_CHANGE;
1945                 if (fnamecmp_type != FNAMECMP_FNAME)
1946                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1947                 if (fnamecmp_type == FNAMECMP_FUZZY)
1948                         iflags |= ITEM_XNAME_FOLLOWS;
1949                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1950                         fuzzy_file ? fuzzy_file->basename : NULL);
1951 #ifdef SUPPORT_ACLS
1952                 if (preserve_acls)
1953                         free_acl(&real_sx);
1954 #endif
1955 #ifdef SUPPORT_XATTRS
1956                 if (preserve_xattrs)
1957                         free_xattr(&real_sx);
1958 #endif
1959         }
1960
1961         if (!do_xfers) {
1962 #ifdef SUPPORT_HARD_LINKS
1963                 if (preserve_hard_links && F_IS_HLINKED(file))
1964                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1965 #endif
1966                 goto cleanup;
1967         }
1968         if (read_batch)
1969                 goto cleanup;
1970
1971         if (statret != 0 || whole_file)
1972                 write_sum_head(f_out, NULL);
1973         else if (sx.st.st_size <= 0) {
1974                 write_sum_head(f_out, NULL);
1975                 close(fd);
1976         } else {
1977                 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1978                         rprintf(FWARNING,
1979                             "WARNING: file is too large for checksum sending: %s\n",
1980                             fnamecmp);
1981                         write_sum_head(f_out, NULL);
1982                 }
1983                 close(fd);
1984         }
1985
1986   cleanup:
1987         if (back_file) {
1988                 int save_preserve_xattrs = preserve_xattrs;
1989                 if (f_copy >= 0)
1990                         close(f_copy);
1991 #ifdef SUPPORT_XATTRS
1992                 if (preserve_xattrs) {
1993                         copy_xattrs(fname, backupptr);
1994                         preserve_xattrs = 0;
1995                 }
1996 #endif
1997                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1998                 preserve_xattrs = save_preserve_xattrs;
1999                 if (INFO_GTE(BACKUP, 1)) {
2000                         rprintf(FINFO, "backed up %s to %s\n",
2001                                 fname, backupptr);
2002                 }
2003                 unmake_file(back_file);
2004         }
2005
2006 #ifdef SUPPORT_ACLS
2007         if (preserve_acls)
2008                 free_acl(&sx);
2009 #endif
2010 #ifdef SUPPORT_XATTRS
2011         if (preserve_xattrs)
2012                 free_xattr(&sx);
2013 #endif
2014         return;
2015 }
2016
2017 #ifdef SUPPORT_HARD_LINKS
2018 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2019                                  enum logcode code, int f_out)
2020 {
2021         char fbuf[MAXPATHLEN];
2022         int new_last_ndx;
2023         struct file_list *save_flist = cur_flist;
2024
2025         /* If we skip the last item in a chain of links and there was a
2026          * prior non-skipped hard-link waiting to finish, finish it now. */
2027         if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2028                 return;
2029
2030         file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2031         cur_flist->in_progress--; /* undo prior increment */
2032         f_name(file, fbuf);
2033         recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2034
2035         cur_flist = save_flist;
2036 }
2037 #endif
2038
2039 static void touch_up_dirs(struct file_list *flist, int ndx)
2040 {
2041         static int counter = 0;
2042         struct file_struct *file;
2043         char *fname;
2044         int i, start, end;
2045
2046         if (ndx < 0) {
2047                 start = 0;
2048                 end = flist->used - 1;
2049         } else
2050                 start = end = ndx;
2051
2052         /* Fix any directory permissions that were modified during the
2053          * transfer and/or re-set any tweaked modified-time values. */
2054         for (i = start; i <= end; i++, counter++) {
2055                 file = flist->files[i];
2056                 if (!S_ISDIR(file->mode)
2057                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2058                         continue;
2059                 if (DEBUG_GTE(TIME, 2)) {
2060                         fname = f_name(file, NULL);
2061                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2062                                 NS(fname), i);
2063                 }
2064                 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
2065                  || (!need_retouch_dir_times && file->mode & S_IWUSR))
2066                         continue;
2067                 fname = f_name(file, NULL);
2068                 if (!(file->mode & S_IWUSR))
2069                         do_chmod(fname, file->mode);
2070                 if (need_retouch_dir_times) {
2071                         STRUCT_STAT st;
2072                         if (link_stat(fname, &st, 0) == 0
2073                          && cmp_time(st.st_mtime, file->modtime) != 0)
2074                                 set_modtime(fname, file->modtime, file->mode);
2075                 }
2076                 if (counter >= loopchk_limit) {
2077                         if (allowed_lull)
2078                                 maybe_send_keepalive();
2079                         else
2080                                 maybe_flush_socket(0);
2081                         counter = 0;
2082                 }
2083         }
2084 }
2085
2086 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2087 {
2088         struct file_struct *file;
2089         struct file_list *flist;
2090         char fbuf[MAXPATHLEN];
2091         int ndx;
2092
2093         while (1) {
2094 #ifdef SUPPORT_HARD_LINKS
2095                 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2096                         flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2097                         file = flist->files[ndx - flist->ndx_start];
2098                         assert(file->flags & FLAG_HLINKED);
2099                         finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2100                         flist->in_progress--;
2101                         continue;
2102                 }
2103 #endif
2104
2105                 if (check_redo && (ndx = get_redo_num()) != -1) {
2106                         csum_length = SUM_LENGTH;
2107                         max_size = -max_size;
2108                         min_size = -min_size;
2109                         ignore_existing = -ignore_existing;
2110                         ignore_non_existing = -ignore_non_existing;
2111                         update_only = -update_only;
2112                         always_checksum = -always_checksum;
2113                         size_only = -size_only;
2114                         append_mode = -append_mode;
2115                         make_backups = -make_backups; /* avoid dup backup w/inplace */
2116                         ignore_times++;
2117
2118                         flist = cur_flist;
2119                         cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2120
2121                         file = cur_flist->files[ndx - cur_flist->ndx_start];
2122                         if (solo_file)
2123                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2124                         else
2125                                 f_name(file, fbuf);
2126                         recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2127                         cur_flist->to_redo--;
2128
2129                         cur_flist = flist;
2130
2131                         csum_length = SHORT_SUM_LENGTH;
2132                         max_size = -max_size;
2133                         min_size = -min_size;
2134                         ignore_existing = -ignore_existing;
2135                         ignore_non_existing = -ignore_non_existing;
2136                         update_only = -update_only;
2137                         always_checksum = -always_checksum;
2138                         size_only = -size_only;
2139                         append_mode = -append_mode;
2140                         make_backups = -make_backups;
2141                         ignore_times--;
2142                         continue;
2143                 }
2144
2145                 if (cur_flist == first_flist)
2146                         break;
2147
2148                 /* We only get here if inc_recurse is enabled. */
2149                 if (first_flist->in_progress || first_flist->to_redo)
2150                         break;
2151
2152                 if (!read_batch) {
2153                         write_ndx(sock_f_out, NDX_DONE);
2154                         maybe_flush_socket(1);
2155                 }
2156
2157                 if (delete_during == 2 || !dir_tweaking) {
2158                         /* Skip directory touch-up. */
2159                 } else if (first_flist->parent_ndx >= 0)
2160                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
2161
2162                 flist_free(first_flist); /* updates first_flist */
2163         }
2164 }
2165
2166 void generate_files(int f_out, const char *local_name)
2167 {
2168         int i, ndx, next_loopchk = 0;
2169         char fbuf[MAXPATHLEN];
2170         int itemizing;
2171         enum logcode code;
2172         int save_info_flist = info_levels[INFO_FLIST];
2173         int save_info_progress = info_levels[INFO_PROGRESS];
2174
2175         if (protocol_version >= 29) {
2176                 itemizing = 1;
2177                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2178                 code = logfile_format_has_i ? FNONE : FLOG;
2179         } else if (am_daemon) {
2180                 itemizing = logfile_format_has_i && do_xfers;
2181                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2182                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2183         } else if (!am_server) {
2184                 itemizing = stdout_format_has_i;
2185                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2186                 code = itemizing ? FNONE : FINFO;
2187         } else {
2188                 itemizing = 0;
2189                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2190                 code = FINFO;
2191         }
2192         solo_file = local_name;
2193         dir_tweaking = !(list_only || solo_file || dry_run);
2194         need_retouch_dir_times = preserve_times > 1;
2195         loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2196         symlink_timeset_failed_flags = ITEM_REPORT_TIME
2197             | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2198         implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2199
2200         if (DEBUG_GTE(GENR, 1))
2201                 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2202
2203         if (delete_before && !solo_file && cur_flist->used > 0)
2204                 do_delete_pass();
2205         if (delete_during == 2) {
2206                 deldelay_size = BIGPATHBUFLEN * 4;
2207                 deldelay_buf = new_array(char, deldelay_size);
2208                 if (!deldelay_buf)
2209                         out_of_memory("delete-delay");
2210         }
2211         info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2212
2213         if (append_mode > 0 || whole_file < 0)
2214                 whole_file = 0;
2215         if (DEBUG_GTE(FLIST, 1)) {
2216                 rprintf(FINFO, "delta-transmission %s\n",
2217                         whole_file
2218                         ? "disabled for local transfer or --whole-file"
2219                         : "enabled");
2220         }
2221
2222         /* Since we often fill up the outgoing socket and then just sit around
2223          * waiting for the other 2 processes to do their thing, we don't want
2224          * to exit on a timeout.  If the data stops flowing, the receiver will
2225          * notice that and let us know via the redo pipe (or its closing). */
2226         ignore_timeout = 1;
2227
2228         dflt_perms = (ACCESSPERMS & ~orig_umask);
2229
2230         do {
2231 #ifdef SUPPORT_HARD_LINKS
2232                 if (preserve_hard_links && inc_recurse) {
2233                         while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2234                                 wait_for_receiver();
2235                 }
2236 #endif
2237
2238                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2239                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2240                         if (solo_file)
2241                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2242                         else
2243                                 f_name(fp, fbuf);
2244                         ndx = cur_flist->ndx_start - 1;
2245                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2246                         if (delete_during && dry_run < 2 && !list_only
2247                          && !(fp->flags & FLAG_MISSING_DIR)) {
2248                                 if (fp->flags & FLAG_CONTENT_DIR) {
2249                                         dev_t dirdev;
2250                                         if (one_file_system) {
2251                                                 uint32 *devp = F_DIR_DEV_P(fp);
2252                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2253                                         } else
2254                                                 dirdev = MAKEDEV(0, 0);
2255                                         delete_in_dir(fbuf, fp, &dirdev);
2256                                 } else
2257                                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2258                         }
2259                 }
2260                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2261                         struct file_struct *file = cur_flist->sorted[i];
2262
2263                         if (!F_IS_ACTIVE(file))
2264                                 continue;
2265
2266                         if (unsort_ndx)
2267                                 ndx = F_NDX(file);
2268                         else
2269                                 ndx = i + cur_flist->ndx_start;
2270
2271                         if (solo_file)
2272                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2273                         else
2274                                 f_name(file, fbuf);
2275                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2276
2277                         check_for_finished_files(itemizing, code, 0);
2278
2279                         if (i + cur_flist->ndx_start >= next_loopchk) {
2280                                 if (allowed_lull)
2281                                         maybe_send_keepalive();
2282                                 else
2283                                         maybe_flush_socket(0);
2284                                 next_loopchk += loopchk_limit;
2285                         }
2286                 }
2287
2288                 if (!inc_recurse) {
2289                         write_ndx(f_out, NDX_DONE);
2290                         break;
2291                 }
2292
2293                 while (1) {
2294                         check_for_finished_files(itemizing, code, 1);
2295                         if (cur_flist->next || flist_eof)
2296                                 break;
2297                         wait_for_receiver();
2298                 }
2299         } while ((cur_flist = cur_flist->next) != NULL);
2300
2301         if (read_batch && inc_recurse)
2302                 write_ndx(f_out, NDX_DONE);
2303
2304         if (delete_during)
2305                 delete_in_dir(NULL, NULL, &dev_zero);
2306         phase++;
2307         if (DEBUG_GTE(GENR, 1))
2308                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2309
2310         while (1) {
2311                 check_for_finished_files(itemizing, code, 1);
2312                 if (msgdone_cnt)
2313                         break;
2314                 wait_for_receiver();
2315         }
2316
2317         phase++;
2318         if (DEBUG_GTE(GENR, 1))
2319                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2320
2321         write_ndx(f_out, NDX_DONE);
2322         write_del_stats(f_out);
2323
2324         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2325         if (protocol_version >= 29 && !delay_updates)
2326                 write_ndx(f_out, NDX_DONE);
2327
2328         /* Read MSG_DONE for the redo phase (and any prior messages). */
2329         while (1) {
2330                 check_for_finished_files(itemizing, code, 0);
2331                 if (msgdone_cnt > 1)
2332                         break;
2333                 wait_for_receiver();
2334         }
2335
2336         if (protocol_version >= 29) {
2337                 phase++;
2338                 if (DEBUG_GTE(GENR, 1))
2339                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2340                 if (delay_updates)
2341                         write_ndx(f_out, NDX_DONE);
2342                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2343                 while (msgdone_cnt == 2)
2344                         wait_for_receiver();
2345         }
2346
2347         info_levels[INFO_FLIST] = save_info_flist;
2348         info_levels[INFO_PROGRESS] = save_info_progress;
2349
2350         if (delete_during == 2)
2351                 do_delayed_deletions(fbuf);
2352         if (delete_after && !solo_file && file_total > 0)
2353                 do_delete_pass();
2354
2355         if ((need_retouch_dir_perms || need_retouch_dir_times)
2356          && dir_tweaking && (!inc_recurse || delete_during == 2))
2357                 touch_up_dirs(dir_flist, -1);
2358
2359         if (max_delete >= 0 && skipped_deletes) {
2360                 rprintf(FWARNING,
2361                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2362                         skipped_deletes);
2363                 io_error |= IOERR_DEL_LIMIT;
2364         }
2365
2366         if (DEBUG_GTE(GENR, 1))
2367                 rprintf(FINFO, "generate_files finished\n");
2368 }