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) 2003-2019 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 write_devices;
  43 extern int preserve_specials;
  44 extern int preserve_hard_links;
  45 extern int preserve_executability;
  46 extern int preserve_perms;
  47 extern int preserve_times;
  48 extern int delete_mode;
  49 extern int delete_before;
  50 extern int delete_during;
  51 extern int delete_after;
  52 extern int missing_args;
  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 want_xattr_optim;
  62 extern int inplace;
  63 extern int append_mode;
  64 extern int make_backups;
  65 extern int csum_length;
  66 extern int ignore_times;
  67 extern int size_only;
  68 extern OFF_T max_size;
  69 extern OFF_T min_size;
  70 extern int io_error;
  71 extern int flist_eof;
  72 extern int allowed_lull;
  73 extern int sock_f_out;
  74 extern int protocol_version;
  75 extern int file_total;
  76 extern int fuzzy_basis;
  77 extern int always_checksum;
  78 extern int flist_csum_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 write_batch;
  87 extern int safe_symlinks;
  88 extern long block_size; /* "long" because popt can't set an int32. */
  89 extern int unsort_ndx;
  90 extern int max_delete;
  91 extern int force_delete;
  92 extern int one_file_system;
  93 extern int skipped_deletes;
  94 extern dev_t filesystem_dev;
  95 extern mode_t orig_umask;
  96 extern uid_t our_uid;
  97 extern char *tmpdir;
  98 extern char *basis_dir[MAX_BASIS_DIRS+1];
  99 extern struct file_list *cur_flist, *first_flist, *dir_flist;
 100 extern filter_rule_list filter_list, daemon_filter_list;
 101
 102 int maybe_ATTRS_REPORT = 0;
 103 int maybe_ATTRS_SET_NANO = 0;
 104
 105 static dev_t dev_zero;
 106 static int deldelay_size = 0, deldelay_cnt = 0;
 107 static char *deldelay_buf = NULL;
 108 static int deldelay_fd = -1;
 109 static int loopchk_limit;
 110 static int dir_tweaking;
 111 static int symlink_timeset_failed_flags;
 112 static int need_retouch_dir_times;
 113 static int need_retouch_dir_perms;
 114 static const char *solo_file = NULL;
 115
 116 enum nonregtype {
 117         TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
 118 };
 119
 120 /* Forward declarations. */
 121 #ifdef SUPPORT_HARD_LINKS
 122 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
 123                                  enum logcode code, int f_out);
 124 #endif
 125
 126 #define EARLY_DELAY_DONE_MSG() (!delay_updates)
 127 #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
 128
 129 static int start_delete_delay_temp(void)
 130 {
 131         char fnametmp[MAXPATHLEN];
 132         int save_dry_run = dry_run;
 133
 134         dry_run = 0;
 135         if (!get_tmpname(fnametmp, "deldelay", False)
 136          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 137                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 138                         inc_recurse ? "" : " -- switching to --delete-after");
 139                 delete_during = 0;
 140                 delete_after = !inc_recurse;
 141                 dry_run = save_dry_run;
 142                 return 0;
 143         }
 144         unlink(fnametmp);
 145         dry_run = save_dry_run;
 146         return 1;
 147 }
 148
 149 static int flush_delete_delay(void)
 150 {
 151         if (deldelay_fd < 0 && !start_delete_delay_temp())
 152                 return 0;
 153         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 154                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 155                 delete_during = 0;
 156                 delete_after = !inc_recurse;
 157                 close(deldelay_fd);
 158                 return 0;
 159         }
 160         deldelay_cnt = 0;
 161         return 1;
 162 }
 163
 164 static int remember_delete(struct file_struct *file, const char *fname, int flags)
 165 {
 166         int len;
 167
 168         if (deldelay_cnt == deldelay_size && !flush_delete_delay())
 169                 return 0;
 170
 171         if (flags & DEL_NO_UID_WRITE)
 172                 deldelay_buf[deldelay_cnt++] = '!';
 173
 174         while (1) {
 175                 len = snprintf(deldelay_buf + deldelay_cnt,
 176                                deldelay_size - deldelay_cnt,
 177                                "%x %s%c",
 178                                (int)file->mode, fname, '\0');
 179                 if ((deldelay_cnt += len) <= deldelay_size)
 180                         break;
 181                 deldelay_cnt -= len;
 182                 if (!flush_delete_delay())
 183                         return 0;
 184         }
 185
 186         return 1;
 187 }
 188
 189 static int read_delay_line(char *buf, int *flags_p)
 190 {
 191         static int read_pos = 0;
 192         int j, len, mode;
 193         char *bp, *past_space;
 194
 195         while (1) {
 196                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 197                 if (j < deldelay_cnt)
 198                         break;
 199                 if (deldelay_fd < 0) {
 200                         if (j > read_pos)
 201                                 goto invalid_data;
 202                         return -1;
 203                 }
 204                 deldelay_cnt -= read_pos;
 205                 if (deldelay_cnt == deldelay_size)
 206                         goto invalid_data;
 207                 if (deldelay_cnt && read_pos) {
 208                         memmove(deldelay_buf, deldelay_buf + read_pos,
 209                                 deldelay_cnt);
 210                 }
 211                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 212                            deldelay_size - deldelay_cnt);
 213                 if (len == 0) {
 214                         if (deldelay_cnt) {
 215                                 rprintf(FERROR,
 216                                     "ERROR: unexpected EOF in delete-delay file.\n");
 217                         }
 218                         return -1;
 219                 }
 220                 if (len < 0) {
 221                         rsyserr(FERROR, errno,
 222                                 "reading delete-delay file");
 223                         return -1;
 224                 }
 225                 deldelay_cnt += len;
 226                 read_pos = 0;
 227         }
 228
 229         bp = deldelay_buf + read_pos;
 230         if (*bp == '!') {
 231                 bp++;
 232                 *flags_p = DEL_NO_UID_WRITE;
 233         } else
 234                 *flags_p = 0;
 235
 236         if (sscanf(bp, "%x ", &mode) != 1) {
 237           invalid_data:
 238                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 239                 return -1;
 240         }
 241         past_space = strchr(bp, ' ') + 1;
 242         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 243         read_pos = j + 1;
 244
 245         if (len > MAXPATHLEN) {
 246                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 247                 return -1;
 248         }
 249
 250         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 251          * instead of returning a pointer to our buffer. */
 252         memcpy(buf, past_space, len);
 253
 254         return mode;
 255 }
 256
 257 static void do_delayed_deletions(char *delbuf)
 258 {
 259         int mode, flags;
 260
 261         if (deldelay_fd >= 0) {
 262                 if (deldelay_cnt && !flush_delete_delay())
 263                         return;
 264                 lseek(deldelay_fd, 0, 0);
 265         }
 266         while ((mode = read_delay_line(delbuf, &flags)) >= 0)
 267                 delete_item(delbuf, mode, flags | DEL_RECURSE);
 268         if (deldelay_fd >= 0)
 269                 close(deldelay_fd);
 270 }
 271
 272 /* This function is used to implement per-directory deletion, and is used by
 273  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 274  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 275  * call will append names onto the end, but the old dir value will be restored
 276  * on exit). */
 277 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 278 {
 279         static int already_warned = 0;
 280         struct file_list *dirlist;
 281         char delbuf[MAXPATHLEN];
 282         int dlen, i;
 283
 284         if (!fbuf) {
 285                 change_local_filter_dir(NULL, 0, 0);
 286                 return;
 287         }
 288
 289         if (DEBUG_GTE(DEL, 2))
 290                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 291
 292         if (allowed_lull)
 293                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
 294
 295         if (io_error & IOERR_GENERAL && !ignore_errors) {
 296                 if (already_warned)
 297                         return;
 298                 rprintf(FINFO,
 299                         "IO error encountered -- skipping file deletion\n");
 300                 already_warned = 1;
 301                 return;
 302         }
 303
 304         dlen = strlen(fbuf);
 305         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 306
 307         if (one_file_system) {
 308                 if (file->flags & FLAG_TOP_DIR)
 309                         filesystem_dev = *fs_dev;
 310                 else if (filesystem_dev != *fs_dev)
 311                         return;
 312         }
 313
 314         dirlist = get_dirlist(fbuf, dlen, 0);
 315
 316         /* If an item in dirlist is not found in flist, delete it
 317          * from the filesystem. */
 318         for (i = dirlist->used; i--; ) {
 319                 struct file_struct *fp = dirlist->files[i];
 320                 if (!F_IS_ACTIVE(fp))
 321                         continue;
 322                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 323                         if (INFO_GTE(MOUNT, 1))
 324                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 325                                         f_name(fp, NULL));
 326                         continue;
 327                 }
 328                 /* Here we want to match regardless of file type.  Replacement
 329                  * of a file with one of another type is handled separately by
 330                  * a delete_item call with a DEL_MAKE_ROOM flag. */
 331                 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
 332                         int flags = DEL_RECURSE;
 333                         if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
 334                                 flags |= DEL_NO_UID_WRITE;
 335                         f_name(fp, delbuf);
 336                         if (delete_during == 2) {
 337                                 if (!remember_delete(fp, delbuf, flags))
 338                                         break;
 339                         } else
 340                                 delete_item(delbuf, fp->mode, flags);
 341                 }
 342         }
 343
 344         flist_free(dirlist);
 345 }
 346
 347 /* This deletes any files on the receiving side that are not present on the
 348  * sending side.  This is used by --delete-before and --delete-after. */
 349 static void do_delete_pass(void)
 350 {
 351         char fbuf[MAXPATHLEN];
 352         STRUCT_STAT st;
 353         int j;
 354
 355         /* dry_run is incremented when the destination doesn't exist yet. */
 356         if (dry_run > 1 || list_only)
 357                 return;
 358
 359         for (j = 0; j < cur_flist->used; j++) {
 360                 struct file_struct *file = cur_flist->sorted[j];
 361
 362                 if (!F_IS_ACTIVE(file))
 363                         continue;
 364
 365                 f_name(file, fbuf);
 366
 367                 if (!(file->flags & FLAG_CONTENT_DIR)) {
 368                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
 369                         continue;
 370                 }
 371
 372                 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
 373                         rprintf(FINFO, "deleting in %s\n", fbuf);
 374
 375                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 376                  || !S_ISDIR(st.st_mode))
 377                         continue;
 378
 379                 delete_in_dir(fbuf, file, &st.st_dev);
 380         }
 381         delete_in_dir(NULL, NULL, &dev_zero);
 382
 383         if (INFO_GTE(FLIST, 2) && !am_server)
 384                 rprintf(FINFO, "                    \r");
 385 }
 386
 387 static inline int time_diff(STRUCT_STAT *stp, struct file_struct *file)
 388 {
 389 #ifdef ST_MTIME_NSEC
 390         return cmp_time(stp->st_mtime, stp->ST_MTIME_NSEC, file->modtime, F_MOD_NSEC(file));
 391 #else
 392         return cmp_time(stp->st_mtime, 0L, file->modtime, 0L);
 393 #endif
 394 }
 395
 396 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
 397 {
 398         if (preserve_perms)
 399                 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
 400
 401         if (preserve_executability)
 402                 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
 403
 404         return 0;
 405 }
 406
 407 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
 408 {
 409         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 410                 return 1;
 411
 412         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 413                 return 1;
 414
 415         return 0;
 416 }
 417
 418 #ifdef SUPPORT_ACLS
 419 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 420 {
 421         if (preserve_acls) {
 422                 if (!ACL_READY(*sxp))
 423                         get_acl(fname, sxp);
 424                 if (set_acl(NULL, file, sxp, file->mode))
 425                         return 1;
 426         }
 427
 428         return 0;
 429 }
 430 #endif
 431
 432 #ifdef SUPPORT_XATTRS
 433 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 434 {
 435         if (preserve_xattrs) {
 436                 if (!XATTR_READY(*sxp))
 437                         get_xattr(fname, sxp);
 438                 if (xattr_diff(file, sxp, 0))
 439                         return 1;
 440         }
 441
 442         return 0;
 443 }
 444 #endif
 445
 446 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 447 {
 448         if (S_ISLNK(file->mode)) {
 449 #ifdef CAN_SET_SYMLINK_TIMES
 450                 if (preserve_times & PRESERVE_LINK_TIMES && time_diff(&sxp->st, file))
 451                         return 0;
 452 #endif
 453 #ifdef CAN_CHMOD_SYMLINK
 454                 if (perms_differ(file, sxp))
 455                         return 0;
 456 #endif
 457 #ifdef CAN_CHOWN_SYMLINK
 458                 if (ownership_differs(file, sxp))
 459                         return 0;
 460 #endif
 461 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
 462                 if (acls_differ(fname, file, sxp))
 463                         return 0;
 464 #endif
 465 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
 466                 if (xattrs_differ(fname, file, sxp))
 467                         return 0;
 468 #endif
 469         } else {
 470                 if (preserve_times && time_diff(&sxp->st, file))
 471                         return 0;
 472                 if (perms_differ(file, sxp))
 473                         return 0;
 474                 if (ownership_differs(file, sxp))
 475                         return 0;
 476 #ifdef SUPPORT_ACLS
 477                 if (acls_differ(fname, file, sxp))
 478                         return 0;
 479 #endif
 480 #ifdef SUPPORT_XATTRS
 481                 if (xattrs_differ(fname, file, sxp))
 482                         return 0;
 483 #endif
 484         }
 485
 486         return 1;
 487 }
 488
 489 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 490              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 491              const char *xname)
 492 {
 493         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 494                 int keep_time = !preserve_times ? 0
 495                     : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
 496                     : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
 497                     : 1;
 498
 499                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 500                         iflags |= ITEM_REPORT_SIZE;
 501                 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
 502                         if (iflags & ITEM_LOCAL_CHANGE)
 503                                 iflags |= symlink_timeset_failed_flags;
 504                 } else if (keep_time
 505                  ? time_diff(&sxp->st, file)
 506                  : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
 507                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 508                         iflags |= ITEM_REPORT_TIME;
 509 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 510                 if (S_ISLNK(file->mode)) {
 511                         ;
 512                 } else
 513 #endif
 514                 if (preserve_perms) {
 515                         if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 516                                 iflags |= ITEM_REPORT_PERMS;
 517                 } else if (preserve_executability
 518                  && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 519                         iflags |= ITEM_REPORT_PERMS;
 520                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 521                         iflags |= ITEM_REPORT_OWNER;
 522                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 523                     && sxp->st.st_gid != (gid_t)F_GROUP(file))
 524                         iflags |= ITEM_REPORT_GROUP;
 525 #ifdef SUPPORT_ACLS
 526                 if (preserve_acls && !S_ISLNK(file->mode)) {
 527                         if (!ACL_READY(*sxp))
 528                                 get_acl(fnamecmp, sxp);
 529                         if (set_acl(NULL, file, sxp, file->mode))
 530                                 iflags |= ITEM_REPORT_ACL;
 531                 }
 532 #endif
 533 #ifdef SUPPORT_XATTRS
 534                 if (preserve_xattrs) {
 535                         if (!XATTR_READY(*sxp))
 536                                 get_xattr(fnamecmp, sxp);
 537                         if (xattr_diff(file, sxp, 1))
 538                                 iflags |= ITEM_REPORT_XATTR;
 539                 }
 540 #endif
 541         } else {
 542 #ifdef SUPPORT_XATTRS
 543                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 544                         iflags |= ITEM_REPORT_XATTR;
 545 #endif
 546                 iflags |= ITEM_IS_NEW;
 547         }
 548
 549         iflags &= 0xffff;
 550         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
 551           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 552                 if (protocol_version >= 29) {
 553                         if (ndx >= 0)
 554                                 write_ndx(sock_f_out, ndx);
 555                         write_shortint(sock_f_out, iflags);
 556                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 557                                 write_byte(sock_f_out, fnamecmp_type);
 558                         if (iflags & ITEM_XNAME_FOLLOWS)
 559                                 write_vstring(sock_f_out, xname, strlen(xname));
 560 #ifdef SUPPORT_XATTRS
 561                         if (preserve_xattrs && do_xfers
 562                          && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
 563                                 int fd = iflags & ITEM_REPORT_XATTR
 564                                       && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
 565                                        ? sock_f_out : -1;
 566                                 send_xattr_request(NULL, file, fd);
 567                         }
 568 #endif
 569                 } else if (ndx >= 0) {
 570                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 571                         log_item(code, file, iflags, xname);
 572                 }
 573         }
 574 }
 575
 576
 577 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 578 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 579 {
 580         if (st->st_size != F_LENGTH(file))
 581                 return 0;
 582
 583         /* if always checksum is set then we use the checksum instead
 584            of the file time to determine whether to sync */
 585         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 586                 char sum[MAX_DIGEST_LEN];
 587                 file_checksum(fn, st, sum);
 588                 return memcmp(sum, F_SUM(file), flist_csum_len) == 0;
 589         }
 590
 591         if (size_only > 0)
 592                 return 1;
 593
 594         if (ignore_times)
 595                 return 0;
 596
 597         return time_diff(st, file) == 0;
 598 }
 599
 600
 601 /*
 602  * set (initialize) the size entries in the per-file sum_struct
 603  * calculating dynamic block and checksum sizes.
 604  *
 605  * This is only called from generate_and_send_sums() but is a separate
 606  * function to encapsulate the logic.
 607  *
 608  * The block size is a rounded square root of file length.
 609  *
 610  * The checksum size is determined according to:
 611  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 612  * provided by Donovan Baarda which gives a probability of rsync
 613  * algorithm corrupting data and falling back using the whole md4
 614  * checksums.
 615  *
 616  * This might be made one of several selectable heuristics.
 617  */
 618 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 619 {
 620         int32 blength;
 621         int s2length;
 622         int64 l;
 623
 624         if (len < 0) {
 625                 /* The file length overflowed our int64 var, so we can't process this file. */
 626                 sum->count = -1; /* indicate overflow error */
 627                 return;
 628         }
 629
 630         if (block_size)
 631                 blength = block_size;
 632         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 633                 blength = BLOCK_SIZE;
 634         else {
 635                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
 636                 int32 c;
 637                 int cnt;
 638                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 639                 if (c < 0 || c >= max_blength)
 640                         blength = max_blength;
 641                 else {
 642                     blength = 0;
 643                     do {
 644                             blength |= c;
 645                             if (len < (int64)blength * blength)
 646                                     blength &= ~c;
 647                             c >>= 1;
 648                     } while (c >= 8);   /* round to multiple of 8 */
 649                     blength = MAX(blength, BLOCK_SIZE);
 650                 }
 651         }
 652
 653         if (protocol_version < 27) {
 654                 s2length = csum_length;
 655         } else if (csum_length == SUM_LENGTH) {
 656                 s2length = SUM_LENGTH;
 657         } else {
 658                 int32 c;
 659                 int b = BLOCKSUM_BIAS;
 660                 for (l = len; l >>= 1; b += 2) {}
 661                 for (c = blength; (c >>= 1) && b; b--) {}
 662                 /* add a bit, subtract rollsum, round up. */
 663                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 664                 s2length = MAX(s2length, csum_length);
 665                 s2length = MIN(s2length, SUM_LENGTH);
 666         }
 667
 668         sum->flength    = len;
 669         sum->blength    = blength;
 670         sum->s2length   = s2length;
 671         sum->remainder  = (int32)(len % blength);
 672         sum->count      = (int32)(l = (len / blength) + (sum->remainder != 0));
 673
 674         if ((int64)sum->count != l)
 675                 sum->count = -1;
 676
 677         if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
 678                 rprintf(FINFO,
 679                         "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
 680                         big_num(sum->count), (long)sum->remainder, (long)sum->blength,
 681                         sum->s2length, big_num(sum->flength));
 682         }
 683 }
 684
 685
 686 /*
 687  * Generate and send a stream of signatures/checksums that describe a buffer
 688  *
 689  * Generate approximately one checksum every block_len bytes.
 690  */
 691 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 692 {
 693         int32 i;
 694         struct map_struct *mapbuf;
 695         struct sum_struct sum;
 696         OFF_T offset = 0;
 697
 698         sum_sizes_sqroot(&sum, len);
 699         if (sum.count < 0)
 700                 return -1;
 701         write_sum_head(f_out, &sum);
 702
 703         if (append_mode > 0 && f_copy < 0)
 704                 return 0;
 705
 706         if (len > 0)
 707                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 708         else
 709                 mapbuf = NULL;
 710
 711         for (i = 0; i < sum.count; i++) {
 712                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 713                 char *map = map_ptr(mapbuf, offset, n1);
 714                 char sum2[SUM_LENGTH];
 715                 uint32 sum1;
 716
 717                 len -= n1;
 718                 offset += n1;
 719
 720                 if (f_copy >= 0) {
 721                         full_write(f_copy, map, n1);
 722                         if (append_mode > 0)
 723                                 continue;
 724                 }
 725
 726                 sum1 = get_checksum1(map, n1);
 727                 get_checksum2(map, n1, sum2);
 728
 729                 if (DEBUG_GTE(DELTASUM, 3)) {
 730                         rprintf(FINFO,
 731                                 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
 732                                 big_num(i), big_num(offset - n1), (long)n1,
 733                                 (unsigned long)sum1);
 734                 }
 735                 write_int(f_out, sum1);
 736                 write_buf(f_out, sum2, sum.s2length);
 737         }
 738
 739         if (mapbuf)
 740                 unmap_file(mapbuf);
 741
 742         return 0;
 743 }
 744
 745
 746 /* Try to find a filename in the same dir as "fname" with a similar name. */
 747 static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
 748 {
 749         int fname_len, fname_suf_len;
 750         const char *fname_suf, *fname = file->basename;
 751         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 752         int i, j;
 753         struct file_struct *lowest_fp = NULL;
 754
 755         fname_len = strlen(fname);
 756         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 757
 758         /* Try to find an exact size+mtime match first. */
 759         for (i = 0; i < fuzzy_basis; i++) {
 760                 struct file_list *dirlist = dirlist_array[i];
 761
 762                 if (!dirlist)
 763                         continue;
 764
 765                 for (j = 0; j < dirlist->used; j++) {
 766                         struct file_struct *fp = dirlist->files[j];
 767
 768                         if (!F_IS_ACTIVE(fp))
 769                                 continue;
 770
 771                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 772                                 continue;
 773
 774                         if (F_LENGTH(fp) == F_LENGTH(file) && cmp_time(fp->modtime, 0L, file->modtime, 0L) == 0) {
 775                                 if (DEBUG_GTE(FUZZY, 2))
 776                                         rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
 777                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 778                                 return fp;
 779                         }
 780
 781                 }
 782         }
 783
 784         for (i = 0; i < fuzzy_basis; i++) {
 785                 struct file_list *dirlist = dirlist_array[i];
 786
 787                 if (!dirlist)
 788                         continue;
 789
 790                 for (j = 0; j < dirlist->used; j++) {
 791                         struct file_struct *fp = dirlist->files[j];
 792                         const char *suf, *name;
 793                         int len, suf_len;
 794                         uint32 dist;
 795
 796                         if (!F_IS_ACTIVE(fp))
 797                                 continue;
 798
 799                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 800                                 continue;
 801
 802                         name = fp->basename;
 803                         len = strlen(name);
 804                         suf = find_filename_suffix(name, len, &suf_len);
 805
 806                         dist = fuzzy_distance(name, len, fname, fname_len);
 807                         /* Add some extra weight to how well the suffixes match. */
 808                         dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
 809                         if (DEBUG_GTE(FUZZY, 2)) {
 810                                 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 811                                         f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
 812                         }
 813                         if (dist <= lowest_dist) {
 814                                 lowest_dist = dist;
 815                                 lowest_fp = fp;
 816                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 817                         }
 818                 }
 819         }
 820
 821         return lowest_fp;
 822 }
 823
 824 /* Copy a file found in our --copy-dest handling. */
 825 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 826 {
 827         char buf[MAXPATHLEN];
 828         const char *copy_to, *partialptr;
 829         int save_preserve_xattrs = preserve_xattrs;
 830         int ok, fd_w;
 831
 832         if (inplace) {
 833                 /* Let copy_file open the destination in place. */
 834                 fd_w = -1;
 835                 copy_to = dest;
 836         } else {
 837                 fd_w = open_tmpfile(buf, dest, file);
 838                 if (fd_w < 0)
 839                         return -1;
 840                 copy_to = buf;
 841         }
 842         cleanup_set(copy_to, NULL, NULL, -1, -1);
 843         if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
 844                 if (INFO_GTE(COPY, 1)) {
 845                         rsyserr(FINFO, errno, "copy_file %s => %s",
 846                                 full_fname(src), copy_to);
 847                 }
 848                 /* Try to clean up. */
 849                 unlink(copy_to);
 850                 cleanup_disable();
 851                 return -1;
 852         }
 853         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 854         preserve_xattrs = 0; /* xattrs were copied with file */
 855         ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 856         preserve_xattrs = save_preserve_xattrs;
 857         cleanup_disable();
 858         return ok ? 0 : -1;
 859 }
 860
 861 /* This is only called for regular files.  We return -2 if we've finished
 862  * handling the file, -1 if no dest-linking occurred, or a non-negative
 863  * value if we found an alternate basis file.  If we're called with the
 864  * find_exact_for_existing flag, the destination file already exists, so
 865  * we only try to find an exact alt-dest match.  In this case, the returns
 866  * are only -2 & -1 (both as above). */
 867 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 868                          char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
 869                          int itemizing, enum logcode code)
 870 {
 871         STRUCT_STAT real_st = sxp->st;
 872         int best_match = -1;
 873         int match_level = 0;
 874         int j = 0;
 875
 876         do {
 877                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 878                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 879                         continue;
 880                 if (match_level == 0) {
 881                         best_match = j;
 882                         match_level = 1;
 883                 }
 884                 if (!unchanged_file(cmpbuf, file, &sxp->st))
 885                         continue;
 886                 if (match_level == 1) {
 887                         best_match = j;
 888                         match_level = 2;
 889                 }
 890                 if (unchanged_attrs(cmpbuf, file, sxp)) {
 891                         best_match = j;
 892                         match_level = 3;
 893                         break;
 894                 }
 895                 free_stat_x(sxp);
 896         } while (basis_dir[++j] != NULL);
 897
 898         if (!match_level)
 899                 goto got_nothing_for_ya;
 900
 901         if (j != best_match) {
 902                 j = best_match;
 903                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 904                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
 905                         goto got_nothing_for_ya;
 906         }
 907
 908         if (match_level == 3 && !copy_dest) {
 909                 if (find_exact_for_existing) {
 910                         if (link_dest && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
 911                                 return -1;
 912                         if (do_unlink(fname) < 0 && errno != ENOENT)
 913                                 goto got_nothing_for_ya;
 914                 }
 915 #ifdef SUPPORT_HARD_LINKS
 916                 if (link_dest) {
 917                         if (!hard_link_one(file, fname, cmpbuf, 1))
 918                                 goto try_a_copy;
 919                         if (preserve_hard_links && F_IS_HLINKED(file))
 920                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
 921                         if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
 922                                 itemize(cmpbuf, file, ndx, 1, sxp,
 923                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 924                                         0, "");
 925                         }
 926                 } else
 927 #endif
 928                 {
 929                         if (itemizing)
 930                                 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
 931                 }
 932                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
 933                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 934                 return -2;
 935         }
 936
 937         if (find_exact_for_existing)
 938                 goto got_nothing_for_ya;
 939
 940         if (match_level >= 2) {
 941 #ifdef SUPPORT_HARD_LINKS
 942           try_a_copy: /* Copy the file locally. */
 943 #endif
 944                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
 945                         if (find_exact_for_existing) /* Can get here via hard-link failure */
 946                                 goto got_nothing_for_ya;
 947                         return -1;
 948                 }
 949                 if (itemizing)
 950                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
 951                 if (maybe_ATTRS_REPORT
 952                  && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
 953                   || (INFO_GTE(NAME, 2) && match_level == 3))) {
 954                         code = match_level == 3 ? FCLIENT : FINFO;
 955                         rprintf(code, "%s%s\n", fname,
 956                                 match_level == 3 ? " is uptodate" : "");
 957                 }
 958 #ifdef SUPPORT_HARD_LINKS
 959                 if (preserve_hard_links && F_IS_HLINKED(file))
 960                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
 961 #endif
 962                 return -2;
 963         }
 964
 965         return FNAMECMP_BASIS_DIR_LOW + j;
 966
 967 got_nothing_for_ya:
 968         sxp->st = real_st;
 969         return -1;
 970 }
 971
 972 /* This is only called for non-regular files.  We return -2 if we've finished
 973  * handling the file, or -1 if no dest-linking occurred, or a non-negative
 974  * value if we found an alternate basis file. */
 975 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 976                          char *cmpbuf, stat_x *sxp, int itemizing,
 977                          enum logcode code)
 978 {
 979         int best_match = -1;
 980         int match_level = 0;
 981         enum nonregtype type;
 982         uint32 *devp;
 983 #ifdef SUPPORT_LINKS
 984         char lnk[MAXPATHLEN];
 985         int len;
 986 #endif
 987         int j = 0;
 988
 989 #ifndef SUPPORT_LINKS
 990         if (S_ISLNK(file->mode))
 991                 return -1;
 992 #endif
 993         if (S_ISDIR(file->mode)) {
 994                 type = TYPE_DIR;
 995         } else if (IS_SPECIAL(file->mode))
 996                 type = TYPE_SPECIAL;
 997         else if (IS_DEVICE(file->mode))
 998                 type = TYPE_DEVICE;
 999 #ifdef SUPPORT_LINKS
1000         else if (S_ISLNK(file->mode))
1001                 type = TYPE_SYMLINK;
1002 #endif
1003         else {
1004                 rprintf(FERROR,
1005                         "internal: try_dests_non() called with invalid mode (%o)\n",
1006                         (int)file->mode);
1007                 exit_cleanup(RERR_UNSUPPORTED);
1008         }
1009
1010         do {
1011                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1012                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1013                         continue;
1014                 switch (type) {
1015                 case TYPE_DIR:
1016                         if (!S_ISDIR(sxp->st.st_mode))
1017                                 continue;
1018                         break;
1019                 case TYPE_SPECIAL:
1020                         if (!IS_SPECIAL(sxp->st.st_mode))
1021                                 continue;
1022                         break;
1023                 case TYPE_DEVICE:
1024                         if (!IS_DEVICE(sxp->st.st_mode))
1025                                 continue;
1026                         break;
1027                 case TYPE_SYMLINK:
1028 #ifdef SUPPORT_LINKS
1029                         if (!S_ISLNK(sxp->st.st_mode))
1030                                 continue;
1031                         break;
1032 #else
1033                         return -1;
1034 #endif
1035                 }
1036                 if (match_level < 1) {
1037                         match_level = 1;
1038                         best_match = j;
1039                 }
1040                 switch (type) {
1041                 case TYPE_DIR:
1042                 case TYPE_SPECIAL:
1043                         break;
1044                 case TYPE_DEVICE:
1045                         devp = F_RDEV_P(file);
1046                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1047                                 continue;
1048                         break;
1049                 case TYPE_SYMLINK:
1050 #ifdef SUPPORT_LINKS
1051                         if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1052                                 continue;
1053                         lnk[len] = '\0';
1054                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1055                                 continue;
1056                         break;
1057 #else
1058                         return -1;
1059 #endif
1060                 }
1061                 if (match_level < 2) {
1062                         match_level = 2;
1063                         best_match = j;
1064                 }
1065                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1066                         match_level = 3;
1067                         best_match = j;
1068                         break;
1069                 }
1070         } while (basis_dir[++j] != NULL);
1071
1072         if (!match_level)
1073                 return -1;
1074
1075         if (j != best_match) {
1076                 j = best_match;
1077                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1078                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1079                         return -1;
1080         }
1081
1082         if (match_level == 3) {
1083 #ifdef SUPPORT_HARD_LINKS
1084                 if (link_dest
1085 #ifndef CAN_HARDLINK_SYMLINK
1086                  && !S_ISLNK(file->mode)
1087 #endif
1088 #ifndef CAN_HARDLINK_SPECIAL
1089                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1090 #endif
1091                  && !S_ISDIR(file->mode)) {
1092                         if (do_link(cmpbuf, fname) < 0) {
1093                                 rsyserr(FERROR_XFER, errno,
1094                                         "failed to hard-link %s with %s",
1095                                         cmpbuf, fname);
1096                                 return j;
1097                         }
1098                         if (preserve_hard_links && F_IS_HLINKED(file))
1099                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1100                 } else
1101 #endif
1102                         match_level = 2;
1103                 if (itemizing && stdout_format_has_i
1104                  && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1105                         int chg = compare_dest && type != TYPE_DIR ? 0
1106                             : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1107                         char *lp = match_level == 3 ? "" : NULL;
1108                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1109                 }
1110                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1111                         rprintf(FCLIENT, "%s%s is uptodate\n",
1112                                 fname, type == TYPE_DIR ? "/" : "");
1113                 }
1114                 return -2;
1115         }
1116
1117         return j;
1118 }
1119
1120 static void list_file_entry(struct file_struct *f)
1121 {
1122         char permbuf[PERMSTRING_SIZE];
1123         int64 len;
1124         int colwidth = human_readable ? 14 : 11;
1125
1126         if (!F_IS_ACTIVE(f)) {
1127                 /* this can happen if duplicate names were removed */
1128                 return;
1129         }
1130
1131         permstring(permbuf, f->mode);
1132         len = F_LENGTH(f);
1133
1134         /* TODO: indicate '+' if the entry has an ACL. */
1135
1136 #ifdef SUPPORT_LINKS
1137         if (preserve_links && S_ISLNK(f->mode)) {
1138                 rprintf(FINFO, "%s %*s %s %s -> %s\n",
1139                         permbuf, colwidth, human_num(len),
1140                         timestring(f->modtime), f_name(f, NULL),
1141                         F_SYMLINK(f));
1142         } else
1143 #endif
1144         if (missing_args == 2 && f->mode == 0) {
1145                 rprintf(FINFO, "%-*s %s\n",
1146                         colwidth + 31, "*missing",
1147                         f_name(f, NULL));
1148         } else {
1149                 rprintf(FINFO, "%s %*s %s %s\n",
1150                         permbuf, colwidth, human_num(len),
1151                         timestring(f->modtime), f_name(f, NULL));
1152         }
1153 }
1154
1155 static int phase = 0;
1156 static int dflt_perms;
1157
1158 static int implied_dirs_are_missing;
1159 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1160 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1161 {
1162         return F_DEPTH(file) > F_DEPTH(subtree)
1163                 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1164 }
1165
1166 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1167  * make sure it exists, and has the right permissions/timestamp info.  For
1168  * all other non-regular files (symlinks, etc.) we create them here.  For
1169  * regular files that have changed, we try to find a basis file and then
1170  * start sending checksums.  The ndx is the file's unique index value.
1171  *
1172  * The fname parameter must point to a MAXPATHLEN buffer!  (e.g it gets
1173  * passed to delete_item(), which can use it during a recursive delete.)
1174  *
1175  * Note that f_out is set to -1 when doing final directory-permission and
1176  * modification-time repair. */
1177 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1178                            int itemizing, enum logcode code, int f_out)
1179 {
1180         static const char *parent_dirname = "";
1181         static struct file_struct *prior_dir_file = NULL;
1182         /* Missing dir not created due to --dry-run; will still be scanned. */
1183         static struct file_struct *dry_missing_dir = NULL;
1184         /* Missing dir whose contents are skipped altogether due to
1185          * --ignore-non-existing, daemon exclude, or mkdir failure. */
1186         static struct file_struct *skip_dir = NULL;
1187         static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
1188         static int need_fuzzy_dirlist = 0;
1189         struct file_struct *fuzzy_file = NULL;
1190         int fd = -1, f_copy = -1;
1191         stat_x sx, real_sx;
1192         STRUCT_STAT partial_st;
1193         struct file_struct *back_file = NULL;
1194         int statret, real_ret, stat_errno;
1195         char *fnamecmp, *partialptr, *backupptr = NULL;
1196         char fnamecmpbuf[MAXPATHLEN];
1197         uchar fnamecmp_type;
1198         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1199         int is_dir = !S_ISDIR(file->mode) ? 0
1200                    : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1201                    : 1;
1202
1203         if (DEBUG_GTE(GENR, 1))
1204                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1205
1206         if (list_only) {
1207                 if (is_dir < 0
1208                  || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1209                         return;
1210                 list_file_entry(file);
1211                 return;
1212         }
1213
1214         maybe_ATTRS_SET_NANO = always_checksum ? ATTRS_SET_NANO : 0;
1215
1216         if (skip_dir) {
1217                 if (is_below(file, skip_dir)) {
1218                         if (is_dir)
1219                                 file->flags |= FLAG_MISSING_DIR;
1220 #ifdef SUPPORT_HARD_LINKS
1221                         else if (F_IS_HLINKED(file))
1222                                 handle_skipped_hlink(file, itemizing, code, f_out);
1223 #endif
1224                         return;
1225                 }
1226                 skip_dir = NULL;
1227         }
1228
1229         init_stat_x(&sx);
1230         if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1231                 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1232                         if (is_dir < 0)
1233                                 return;
1234 #ifdef SUPPORT_HARD_LINKS
1235                         if (F_IS_HLINKED(file))
1236                                 handle_skipped_hlink(file, itemizing, code, f_out);
1237 #endif
1238                         rprintf(FERROR_XFER,
1239                                 "ERROR: daemon refused to receive %s \"%s\"\n",
1240                                 is_dir ? "directory" : "file", fname);
1241                         if (is_dir)
1242                                 goto skipping_dir_contents;
1243                         return;
1244                 }
1245         }
1246
1247         if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1248                 int i;
1249           parent_is_dry_missing:
1250                 for (i = 0; i < fuzzy_basis; i++) {
1251                         if (fuzzy_dirlist[i]) {
1252                                 flist_free(fuzzy_dirlist[i]);
1253                                 fuzzy_dirlist[i] = NULL;
1254                         }
1255                 }
1256                 parent_dirname = "";
1257                 statret = -1;
1258                 stat_errno = ENOENT;
1259         } else {
1260                 const char *dn = file->dirname ? file->dirname : ".";
1261                 dry_missing_dir = NULL;
1262                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1263                         /* Each parent dir must be in the file list or the flist data is bad.
1264                          * Optimization: most of the time the parent dir will be the last dir
1265                          * this function was asked to process in the file list. */
1266                         if (!inc_recurse
1267                          && (*dn != '.' || dn[1]) /* Avoid an issue with --relative and the "." dir. */
1268                          && (!prior_dir_file || strcmp(dn, f_name(prior_dir_file, NULL)) != 0)
1269                          && flist_find_name(cur_flist, dn, 1) < 0) {
1270                                 rprintf(FERROR,
1271                                         "ABORTING due to invalid path from sender: %s/%s\n",
1272                                         dn, file->basename);
1273                                 exit_cleanup(RERR_PROTOCOL);
1274                         }
1275                         if (relative_paths && !implied_dirs
1276                          && do_stat(dn, &sx.st) < 0) {
1277                                 if (dry_run)
1278                                         goto parent_is_dry_missing;
1279                                 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1280                                         rsyserr(FERROR_XFER, errno,
1281                                                 "recv_generator: mkdir %s failed",
1282                                                 full_fname(dn));
1283                                 }
1284                         }
1285                         if (fuzzy_basis) {
1286                                 int i;
1287                                 for (i = 0; i < fuzzy_basis; i++) {
1288                                         if (fuzzy_dirlist[i]) {
1289                                                 flist_free(fuzzy_dirlist[i]);
1290                                                 fuzzy_dirlist[i] = NULL;
1291                                         }
1292                                 }
1293                                 need_fuzzy_dirlist = 1;
1294                         }
1295 #ifdef SUPPORT_ACLS
1296                         if (!preserve_perms)
1297                                 dflt_perms = default_perms_for_dir(dn);
1298 #endif
1299                 }
1300                 parent_dirname = dn;
1301
1302                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1303                         int i;
1304                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1305                         for (i = 0; i < fuzzy_basis; i++) {
1306                                 if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
1307                                         continue;
1308                                 fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES | GDL_PERHAPS_DIR);
1309                                 if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
1310                                         flist_free(fuzzy_dirlist[i]);
1311                                         fuzzy_dirlist[i] = NULL;
1312                                 }
1313                         }
1314                         need_fuzzy_dirlist = 0;
1315                 }
1316
1317                 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1318                 stat_errno = errno;
1319         }
1320
1321         if (missing_args == 2 && file->mode == 0) {
1322                 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1323                         return;
1324                 if (statret == 0)
1325                         delete_item(fname, sx.st.st_mode, del_opts);
1326                 return;
1327         }
1328
1329         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1330                 if (is_dir) {
1331                         if (is_dir < 0)
1332                                 return;
1333                         skip_dir = file;
1334                         file->flags |= FLAG_MISSING_DIR;
1335                 }
1336 #ifdef SUPPORT_HARD_LINKS
1337                 else if (F_IS_HLINKED(file))
1338                         handle_skipped_hlink(file, itemizing, code, f_out);
1339 #endif
1340                 if (INFO_GTE(SKIP, 1)) {
1341                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1342                                 is_dir ? "directory" : "file", fname);
1343                 }
1344                 return;
1345         }
1346
1347         if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1348          && !am_root && sx.st.st_uid == our_uid)
1349                 del_opts |= DEL_NO_UID_WRITE;
1350
1351         if (ignore_existing > 0 && statret == 0
1352          && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1353                 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1354                         rprintf(FINFO, "%s exists\n", fname);
1355 #ifdef SUPPORT_HARD_LINKS
1356                 if (F_IS_HLINKED(file))
1357                         handle_skipped_hlink(file, itemizing, code, f_out);
1358 #endif
1359                 goto cleanup;
1360         }
1361
1362         fnamecmp = fname;
1363
1364         if (is_dir) {
1365                 mode_t added_perms;
1366                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1367                         goto cleanup;
1368                 if (am_root < 0) {
1369                         /* For --fake-super, the dir must be useable by the copying
1370                          * user, just like it would be for root. */
1371                         added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1372                 } else
1373                         added_perms = 0;
1374                 if (is_dir < 0) {
1375                         if (!(preserve_times & PRESERVE_DIR_TIMES))
1376                                 return;
1377                         /* In inc_recurse mode we want to make sure any missing
1378                          * directories get created while we're still processing
1379                          * the parent dir (which allows us to touch the parent
1380                          * dir's mtime right away).  We will handle the dir in
1381                          * full later (right before we handle its contents). */
1382                         if (statret == 0
1383                          && (S_ISDIR(sx.st.st_mode)
1384                           || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1385                                 goto cleanup; /* Any errors get reported later. */
1386                         if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1387                                 file->flags |= FLAG_DIR_CREATED;
1388                         goto cleanup;
1389                 }
1390                 /* The file to be received is a directory, so we need
1391                  * to prepare appropriately.  If there is already a
1392                  * file of that name and it is *not* a directory, then
1393                  * we need to delete it.  If it doesn't exist, then
1394                  * (perhaps recursively) create it. */
1395                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1396                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1397                                 goto skipping_dir_contents;
1398                         statret = -1;
1399                 }
1400                 if (dry_run && statret != 0) {
1401                         if (!dry_missing_dir)
1402                                 dry_missing_dir = file;
1403                         file->flags |= FLAG_MISSING_DIR;
1404                 }
1405                 init_stat_x(&real_sx);
1406                 real_sx.st = sx.st;
1407                 real_ret = statret;
1408                 if (file->flags & FLAG_DIR_CREATED)
1409                         statret = -1;
1410                 if (!preserve_perms) { /* See comment in non-dir code below. */
1411                         file->mode = dest_mode(file->mode, sx.st.st_mode,
1412                                                dflt_perms, statret == 0);
1413                 }
1414                 if (statret != 0 && basis_dir[0] != NULL) {
1415                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1416                                               itemizing, code);
1417                         if (j == -2) {
1418                                 itemizing = 0;
1419                                 code = FNONE;
1420                                 statret = 1;
1421                         } else if (j >= 0) {
1422                                 statret = 1;
1423                                 fnamecmp = fnamecmpbuf;
1424                         }
1425                 }
1426                 if (itemizing && f_out != -1) {
1427                         itemize(fnamecmp, file, ndx, statret, &sx,
1428                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1429                 }
1430                 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1431                         if (!relative_paths || errno != ENOENT
1432                          || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1433                          || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1434                                 rsyserr(FERROR_XFER, errno,
1435                                         "recv_generator: mkdir %s failed",
1436                                         full_fname(fname));
1437                           skipping_dir_contents:
1438                                 rprintf(FERROR,
1439                                     "*** Skipping any contents from this failed directory ***\n");
1440                                 skip_dir = file;
1441                                 file->flags |= FLAG_MISSING_DIR;
1442                                 goto cleanup;
1443                         }
1444                 }
1445
1446 #ifdef SUPPORT_XATTRS
1447                 if (preserve_xattrs && statret == 1)
1448                         copy_xattrs(fnamecmpbuf, fname);
1449 #endif
1450                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1451                     && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1452                         rprintf(code, "%s/\n", fname);
1453
1454                 /* We need to ensure that the dirs in the transfer have both
1455                  * readable and writable permissions during the time we are
1456                  * putting files within them.  This is then restored to the
1457                  * former permissions after the transfer is done. */
1458 #ifdef HAVE_CHMOD
1459                 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1460                         mode_t mode = file->mode | S_IRWXU;
1461                         if (do_chmod(fname, mode) < 0) {
1462                                 rsyserr(FERROR_XFER, errno,
1463                                         "failed to modify permissions on %s",
1464                                         full_fname(fname));
1465                         }
1466                         need_retouch_dir_perms = 1;
1467                 }
1468 #endif
1469
1470                 if (real_ret != 0 && one_file_system)
1471                         real_sx.st.st_dev = filesystem_dev;
1472                 if (inc_recurse) {
1473                         if (one_file_system) {
1474                                 uint32 *devp = F_DIR_DEV_P(file);
1475                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1476                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1477                         }
1478                 }
1479                 else if (delete_during && f_out != -1 && !phase
1480                     && !(file->flags & FLAG_MISSING_DIR)) {
1481                         if (file->flags & FLAG_CONTENT_DIR)
1482                                 delete_in_dir(fname, file, &real_sx.st.st_dev);
1483                         else
1484                                 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1485                 }
1486                 prior_dir_file = file;
1487                 goto cleanup;
1488         }
1489
1490         /* If we're not preserving permissions, change the file-list's
1491          * mode based on the local permissions and some heuristics. */
1492         if (!preserve_perms) {
1493                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1494                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1495                                        exists);
1496         }
1497
1498 #ifdef SUPPORT_HARD_LINKS
1499         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1500          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1501                 goto cleanup;
1502 #endif
1503
1504         if (preserve_links && S_ISLNK(file->mode)) {
1505 #ifdef SUPPORT_LINKS
1506                 const char *sl = F_SYMLINK(file);
1507                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1508                         if (INFO_GTE(NAME, 1)) {
1509                                 if (solo_file) {
1510                                         /* fname contains the destination path, but we
1511                                          * want to report the source path. */
1512                                         fname = f_name(file, NULL);
1513                                 }
1514                                 rprintf(FINFO,
1515                                         "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1516                                         fname, sl);
1517                         }
1518                         return;
1519                 }
1520                 if (statret == 0) {
1521                         char lnk[MAXPATHLEN];
1522                         int len;
1523
1524                         if (S_ISLNK(sx.st.st_mode)
1525                          && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1526                          && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1527                                 /* The link is pointing to the right place. */
1528                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1529                                 if (itemizing)
1530                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1531 #ifdef SUPPORT_HARD_LINKS
1532                                 if (preserve_hard_links && F_IS_HLINKED(file))
1533                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1534 #endif
1535                                 if (remove_source_files == 1)
1536                                         goto return_with_success;
1537                                 goto cleanup;
1538                         }
1539                 } else if (basis_dir[0] != NULL) {
1540                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1541                                               itemizing, code);
1542                         if (j == -2) {
1543 #ifndef CAN_HARDLINK_SYMLINK
1544                                 if (link_dest) {
1545                                         /* Resort to --copy-dest behavior. */
1546                                 } else
1547 #endif
1548                                 if (!copy_dest)
1549                                         goto cleanup;
1550                                 itemizing = 0;
1551                                 code = FNONE;
1552                         } else if (j >= 0) {
1553                                 statret = 1;
1554                                 fnamecmp = fnamecmpbuf;
1555                         }
1556                 }
1557                 if (atomic_create(file, fname, sl, NULL, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1558                         set_file_attrs(fname, file, NULL, NULL, 0);
1559                         if (itemizing) {
1560                                 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1561                                         statret = -1;
1562                                 itemize(fnamecmp, file, ndx, statret, &sx,
1563                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1564                         }
1565                         if (code != FNONE && INFO_GTE(NAME, 1))
1566                                 rprintf(code, "%s -> %s\n", fname, sl);
1567 #ifdef SUPPORT_HARD_LINKS
1568                         if (preserve_hard_links && F_IS_HLINKED(file))
1569                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1570 #endif
1571                         /* This does not check remove_source_files == 1
1572                          * because this is one of the items that the old
1573                          * --remove-sent-files option would remove. */
1574                         if (remove_source_files)
1575                                 goto return_with_success;
1576                 }
1577 #endif
1578                 goto cleanup;
1579         }
1580
1581         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1582          || (preserve_specials && IS_SPECIAL(file->mode))) {
1583                 dev_t rdev;
1584                 int del_for_flag = 0;
1585                 if (IS_DEVICE(file->mode)) {
1586                         uint32 *devp = F_RDEV_P(file);
1587                         rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1588                 } else
1589                         rdev = 0;
1590                 if (statret == 0) {
1591                         if (IS_DEVICE(file->mode)) {
1592                                 if (!IS_DEVICE(sx.st.st_mode))
1593                                         statret = -1;
1594                                 del_for_flag = DEL_FOR_DEVICE;
1595                         } else {
1596                                 if (!IS_SPECIAL(sx.st.st_mode))
1597                                         statret = -1;
1598                                 del_for_flag = DEL_FOR_SPECIAL;
1599                         }
1600                         if (statret == 0
1601                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1602                          && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1603                                 /* The device or special file is identical. */
1604                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1605                                 if (itemizing)
1606                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1607 #ifdef SUPPORT_HARD_LINKS
1608                                 if (preserve_hard_links && F_IS_HLINKED(file))
1609                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1610 #endif
1611                                 if (remove_source_files == 1)
1612                                         goto return_with_success;
1613                                 goto cleanup;
1614                         }
1615                 } else if (basis_dir[0] != NULL) {
1616                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1617                                               itemizing, code);
1618                         if (j == -2) {
1619 #ifndef CAN_HARDLINK_SPECIAL
1620                                 if (link_dest) {
1621                                         /* Resort to --copy-dest behavior. */
1622                                 } else
1623 #endif
1624                                 if (!copy_dest)
1625                                         goto cleanup;
1626                                 itemizing = 0;
1627                                 code = FNONE;
1628                         } else if (j >= 0) {
1629                                 statret = 1;
1630                                 fnamecmp = fnamecmpbuf;
1631                         }
1632                 }
1633                 if (DEBUG_GTE(GENR, 1)) {
1634                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1635                                 fname, (int)file->mode,
1636                                 (long)major(rdev), (long)minor(rdev));
1637                 }
1638                 if (atomic_create(file, fname, NULL, NULL, rdev, &sx, del_for_flag)) {
1639                         set_file_attrs(fname, file, NULL, NULL, 0);
1640                         if (itemizing) {
1641                                 itemize(fnamecmp, file, ndx, statret, &sx,
1642                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1643                         }
1644                         if (code != FNONE && INFO_GTE(NAME, 1))
1645                                 rprintf(code, "%s\n", fname);
1646 #ifdef SUPPORT_HARD_LINKS
1647                         if (preserve_hard_links && F_IS_HLINKED(file))
1648                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1649 #endif
1650                         if (remove_source_files == 1)
1651                                 goto return_with_success;
1652                 }
1653                 goto cleanup;
1654         }
1655
1656         if (!S_ISREG(file->mode)) {
1657                 if (solo_file)
1658                         fname = f_name(file, NULL);
1659                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1660                 goto cleanup;
1661         }
1662
1663         if (max_size >= 0 && F_LENGTH(file) > max_size) {
1664                 if (INFO_GTE(SKIP, 1)) {
1665                         if (solo_file)
1666                                 fname = f_name(file, NULL);
1667                         rprintf(FINFO, "%s is over max-size\n", fname);
1668                 }
1669                 goto cleanup;
1670         }
1671         if (min_size >= 0 && F_LENGTH(file) < min_size) {
1672                 if (INFO_GTE(SKIP, 1)) {
1673                         if (solo_file)
1674                                 fname = f_name(file, NULL);
1675                         rprintf(FINFO, "%s is under min-size\n", fname);
1676                 }
1677                 goto cleanup;
1678         }
1679
1680         if (update_only > 0 && statret == 0 && time_diff(&sx.st, file) > 0) {
1681                 if (INFO_GTE(SKIP, 1))
1682                         rprintf(FINFO, "%s is newer\n", fname);
1683 #ifdef SUPPORT_HARD_LINKS
1684                 if (F_IS_HLINKED(file))
1685                         handle_skipped_hlink(file, itemizing, code, f_out);
1686 #endif
1687                 goto cleanup;
1688         }
1689
1690         fnamecmp_type = FNAMECMP_FNAME;
1691
1692         if (statret == 0 && !(S_ISREG(sx.st.st_mode) || (write_devices && IS_DEVICE(sx.st.st_mode)))) {
1693                 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1694                         goto cleanup;
1695                 statret = -1;
1696                 stat_errno = ENOENT;
1697         }
1698
1699         if (basis_dir[0] != NULL && (statret != 0 || !copy_dest)) {
1700                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1701                                       statret == 0, itemizing, code);
1702                 if (j == -2) {
1703                         if (remove_source_files == 1)
1704                                 goto return_with_success;
1705                         goto cleanup;
1706                 }
1707                 if (j >= 0) {
1708                         fnamecmp = fnamecmpbuf;
1709                         fnamecmp_type = j;
1710                         statret = 0;
1711                 }
1712         }
1713
1714         init_stat_x(&real_sx);
1715         real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
1716         real_ret = statret;
1717
1718         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1719             && link_stat(partialptr, &partial_st, 0) == 0
1720             && S_ISREG(partial_st.st_mode)) {
1721                 if (statret != 0)
1722                         goto prepare_to_open;
1723         } else
1724                 partialptr = NULL;
1725
1726         if (statret != 0 && fuzzy_basis) {
1727                 /* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
1728                 fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
1729                 if (fuzzy_file) {
1730                         f_name(fuzzy_file, fnamecmpbuf);
1731                         if (DEBUG_GTE(FUZZY, 1)) {
1732                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1733                                         fname, fnamecmpbuf);
1734                         }
1735                         sx.st.st_size = F_LENGTH(fuzzy_file);
1736                         statret = 0;
1737                         fnamecmp = fnamecmpbuf;
1738                 }
1739         }
1740
1741         if (statret != 0) {
1742 #ifdef SUPPORT_HARD_LINKS
1743                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1744                         cur_flist->in_progress++;
1745                         goto cleanup;
1746                 }
1747 #endif
1748                 if (stat_errno == ENOENT)
1749                         goto notify_others;
1750                 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1751                         full_fname(fname));
1752                 goto cleanup;
1753         }
1754
1755         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1756                 ;
1757         else if (fnamecmp_type >= FNAMECMP_FUZZY)
1758                 ;
1759         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1760                 if (partialptr) {
1761                         do_unlink(partialptr);
1762                         handle_partial_dir(partialptr, PDIR_DELETE);
1763                 }
1764                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT | maybe_ATTRS_SET_NANO);
1765                 if (itemizing)
1766                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1767 #ifdef SUPPORT_HARD_LINKS
1768                 if (preserve_hard_links && F_IS_HLINKED(file))
1769                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1770 #endif
1771                 if (remove_source_files != 1)
1772                         goto cleanup;
1773           return_with_success:
1774                 if (!dry_run)
1775                         send_msg_int(MSG_SUCCESS, ndx);
1776                 goto cleanup;
1777         }
1778
1779         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1780 #ifdef SUPPORT_HARD_LINKS
1781                 if (F_IS_HLINKED(file))
1782                         handle_skipped_hlink(file, itemizing, code, f_out);
1783 #endif
1784                 goto cleanup;
1785         }
1786
1787   prepare_to_open:
1788         if (partialptr) {
1789                 sx.st = partial_st;
1790                 fnamecmp = partialptr;
1791                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1792                 statret = 0;
1793         }
1794
1795         if (!do_xfers)
1796                 goto notify_others;
1797
1798         if (read_batch || whole_file) {
1799                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1800                         if (!(backupptr = get_backup_name(fname)))
1801                                 goto cleanup;
1802                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1803                                 goto pretend_missing;
1804                         if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1805                                 unmake_file(back_file);
1806                                 back_file = NULL;
1807                                 goto cleanup;
1808                         }
1809                 }
1810                 goto notify_others;
1811         }
1812
1813         if (fuzzy_dirlist[0]) {
1814                 int j = flist_find(fuzzy_dirlist[0], file);
1815                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1816                         fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
1817         }
1818
1819         /* open the file */
1820         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1821                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1822                         full_fname(fnamecmp));
1823           pretend_missing:
1824                 /* pretend the file didn't exist */
1825 #ifdef SUPPORT_HARD_LINKS
1826                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1827                         cur_flist->in_progress++;
1828                         goto cleanup;
1829                 }
1830 #endif
1831                 statret = real_ret = -1;
1832                 goto notify_others;
1833         }
1834
1835         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1836                 if (!(backupptr = get_backup_name(fname))) {
1837                         close(fd);
1838                         goto cleanup;
1839                 }
1840                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1841                         close(fd);
1842                         goto pretend_missing;
1843                 }
1844                 if (robust_unlink(backupptr) && errno != ENOENT) {
1845                         rsyserr(FERROR_XFER, errno, "unlink %s",
1846                                 full_fname(backupptr));
1847                         unmake_file(back_file);
1848                         back_file = NULL;
1849                         close(fd);
1850                         goto cleanup;
1851                 }
1852                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1853                         rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1854                         unmake_file(back_file);
1855                         back_file = NULL;
1856                         close(fd);
1857                         goto cleanup;
1858                 }
1859                 fnamecmp_type = FNAMECMP_BACKUP;
1860         }
1861
1862         if (DEBUG_GTE(DELTASUM, 3)) {
1863                 rprintf(FINFO, "gen mapped %s of size %s\n",
1864                         fnamecmp, big_num(sx.st.st_size));
1865         }
1866
1867         if (DEBUG_GTE(DELTASUM, 2))
1868                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1869
1870   notify_others:
1871         if (remove_source_files && !delay_updates && !phase && !dry_run)
1872                 increment_active_files(ndx, itemizing, code);
1873         if (inc_recurse && (!dry_run || write_batch < 0))
1874                 cur_flist->in_progress++;
1875 #ifdef SUPPORT_HARD_LINKS
1876         if (preserve_hard_links && F_IS_HLINKED(file))
1877                 file->flags |= FLAG_FILE_SENT;
1878 #endif
1879         write_ndx(f_out, ndx);
1880         if (itemizing) {
1881                 int iflags = ITEM_TRANSFER;
1882                 if (always_checksum > 0)
1883                         iflags |= ITEM_REPORT_CHANGE;
1884                 if (fnamecmp_type != FNAMECMP_FNAME)
1885                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1886                 if (fnamecmp_type >= FNAMECMP_FUZZY)
1887                         iflags |= ITEM_XNAME_FOLLOWS;
1888                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1889                         fuzzy_file ? fuzzy_file->basename : NULL);
1890                 free_stat_x(&real_sx);
1891         }
1892
1893         if (!do_xfers) {
1894 #ifdef SUPPORT_HARD_LINKS
1895                 if (preserve_hard_links && F_IS_HLINKED(file))
1896                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1897 #endif
1898                 goto cleanup;
1899         }
1900         if (read_batch)
1901                 goto cleanup;
1902
1903         if (statret != 0 || whole_file)
1904                 write_sum_head(f_out, NULL);
1905         else if (sx.st.st_size <= 0) {
1906                 write_sum_head(f_out, NULL);
1907                 close(fd);
1908         } else {
1909                 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1910                         rprintf(FWARNING,
1911                             "WARNING: file is too large for checksum sending: %s\n",
1912                             fnamecmp);
1913                         write_sum_head(f_out, NULL);
1914                 }
1915                 close(fd);
1916         }
1917
1918   cleanup:
1919         if (back_file) {
1920                 int save_preserve_xattrs = preserve_xattrs;
1921                 if (f_copy >= 0)
1922                         close(f_copy);
1923 #ifdef SUPPORT_XATTRS
1924                 if (preserve_xattrs) {
1925                         copy_xattrs(fname, backupptr);
1926                         preserve_xattrs = 0;
1927                 }
1928 #endif
1929                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1930                 preserve_xattrs = save_preserve_xattrs;
1931                 if (INFO_GTE(BACKUP, 1)) {
1932                         rprintf(FINFO, "backed up %s to %s\n",
1933                                 fname, backupptr);
1934                 }
1935                 unmake_file(back_file);
1936         }
1937
1938         free_stat_x(&sx);
1939 }
1940
1941 /* If we are replacing an existing hard link, symlink, device, or special file,
1942  * create a temp-name item and rename it into place.  A symlimk specifies slnk,
1943  * a hard link specifies hlnk, otherwise we create a device based on rdev.
1944  * Specify 0 for the del_for_flag if there is not a file to replace.  This
1945  * returns 1 on success and 0 on failure. */
1946 int atomic_create(struct file_struct *file, char *fname, const char *slnk, const char *hlnk,
1947                   dev_t rdev, stat_x *sxp, int del_for_flag)
1948 {
1949         char tmpname[MAXPATHLEN];
1950         const char *create_name;
1951         int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1952
1953         if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1954                 skip_atomic = 1;
1955         else
1956                 skip_atomic = 0;
1957
1958         if (del_for_flag) {
1959                 if (make_backups > 0 && !dir_in_the_way) {
1960                         if (!make_backup(fname, skip_atomic))
1961                                 return 0;
1962                 } else if (skip_atomic) {
1963                         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1964                         if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1965                                 return 0;
1966                 }
1967         }
1968
1969         create_name = skip_atomic ? fname : tmpname;
1970
1971         if (slnk) {
1972 #ifdef SUPPORT_LINKS
1973                 if (do_symlink(slnk, create_name) < 0) {
1974                         rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1975                                 full_fname(create_name), slnk);
1976                         return 0;
1977                 }
1978 #else
1979                 return 0;
1980 #endif
1981         } else if (hlnk) {
1982 #ifdef SUPPORT_HARD_LINKS
1983                 if (!hard_link_one(file, create_name, hlnk, 0))
1984                         return 0;
1985 #else
1986                 return 0;
1987 #endif
1988         } else {
1989                 if (do_mknod(create_name, file->mode, rdev) < 0) {
1990                         rsyserr(FERROR_XFER, errno, "mknod %s failed",
1991                                 full_fname(create_name));
1992                         return 0;
1993                 }
1994         }
1995
1996         if (!skip_atomic) {
1997                 if (do_rename(tmpname, fname) < 0) {
1998                         rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
1999                                 full_fname(tmpname), full_fname(fname));
2000                         do_unlink(tmpname);
2001                         return 0;
2002                 }
2003         }
2004
2005         return 1;
2006 }
2007
2008 #ifdef SUPPORT_HARD_LINKS
2009 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2010                                  enum logcode code, int f_out)
2011 {
2012         char fbuf[MAXPATHLEN];
2013         int new_last_ndx;
2014         struct file_list *save_flist = cur_flist;
2015
2016         /* If we skip the last item in a chain of links and there was a
2017          * prior non-skipped hard-link waiting to finish, finish it now. */
2018         if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2019                 return;
2020
2021         file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2022         cur_flist->in_progress--; /* undo prior increment */
2023         f_name(file, fbuf);
2024         recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2025
2026         cur_flist = save_flist;
2027 }
2028 #endif
2029
2030 static void touch_up_dirs(struct file_list *flist, int ndx)
2031 {
2032         static int counter = 0;
2033         struct file_struct *file;
2034         char *fname;
2035         BOOL fix_dir_perms;
2036         int i, start, end;
2037
2038         if (ndx < 0) {
2039                 start = 0;
2040                 end = flist->used - 1;
2041         } else
2042                 start = end = ndx;
2043
2044         /* Fix any directory permissions that were modified during the
2045          * transfer and/or re-set any tweaked modified-time values. */
2046         for (i = start; i <= end; i++, counter++) {
2047                 file = flist->files[i];
2048                 if (!F_IS_ACTIVE(file))
2049                         continue;
2050                 if (!S_ISDIR(file->mode)
2051                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2052                         continue;
2053                 if (DEBUG_GTE(TIME, 2)) {
2054                         fname = f_name(file, NULL);
2055                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2056                                 NS(fname), i);
2057                 }
2058                 /* Be sure not to retouch permissions with --fake-super. */
2059                 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2060                 if (file->flags & FLAG_MISSING_DIR || !(need_retouch_dir_times || fix_dir_perms))
2061                         continue;
2062                 fname = f_name(file, NULL);
2063                 if (fix_dir_perms)
2064                         do_chmod(fname, file->mode);
2065                 if (need_retouch_dir_times) {
2066                         STRUCT_STAT st;
2067                         if (link_stat(fname, &st, 0) == 0 && time_diff(&st, file))
2068                                 set_modtime(fname, file->modtime, F_MOD_NSEC(file), file->mode);
2069                 }
2070                 if (counter >= loopchk_limit) {
2071                         if (allowed_lull)
2072                                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2073                         else
2074                                 maybe_flush_socket(0);
2075                         counter = 0;
2076                 }
2077         }
2078 }
2079
2080 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2081 {
2082         struct file_struct *file;
2083         struct file_list *flist;
2084         char fbuf[MAXPATHLEN];
2085         int ndx;
2086
2087         while (1) {
2088 #ifdef SUPPORT_HARD_LINKS
2089                 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2090                         int send_failed = (ndx == -2);
2091                         if (send_failed)
2092                                 ndx = get_hlink_num();
2093                         flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2094                         file = flist->files[ndx - flist->ndx_start];
2095                         assert(file->flags & FLAG_HLINKED);
2096                         if (send_failed)
2097                                 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2098                         else
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                         OFF_T save_max_size = max_size;
2107                         OFF_T save_min_size = min_size;
2108                         csum_length = SUM_LENGTH;
2109                         max_size = -1;
2110                         min_size = -1;
2111                         ignore_existing = -ignore_existing;
2112                         ignore_non_existing = -ignore_non_existing;
2113                         update_only = -update_only;
2114                         always_checksum = -always_checksum;
2115                         size_only = -size_only;
2116                         append_mode = -append_mode;
2117                         make_backups = -make_backups; /* avoid dup backup w/inplace */
2118                         ignore_times++;
2119
2120                         flist = cur_flist;
2121                         cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2122
2123                         file = cur_flist->files[ndx - cur_flist->ndx_start];
2124                         if (solo_file)
2125                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2126                         else
2127                                 f_name(file, fbuf);
2128                         recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2129                         cur_flist->to_redo--;
2130
2131                         cur_flist = flist;
2132
2133                         csum_length = SHORT_SUM_LENGTH;
2134                         max_size = save_max_size;
2135                         min_size = save_min_size;
2136                         ignore_existing = -ignore_existing;
2137                         ignore_non_existing = -ignore_non_existing;
2138                         update_only = -update_only;
2139                         always_checksum = -always_checksum;
2140                         size_only = -size_only;
2141                         append_mode = -append_mode;
2142                         make_backups = -make_backups;
2143                         ignore_times--;
2144                         continue;
2145                 }
2146
2147                 if (cur_flist == first_flist)
2148                         break;
2149
2150                 /* We only get here if inc_recurse is enabled. */
2151                 if (first_flist->in_progress || first_flist->to_redo)
2152                         break;
2153
2154                 write_ndx(sock_f_out, NDX_DONE);
2155                 if (!read_batch && !flist_eof) {
2156                         int old_total = 0;
2157                         for (flist = first_flist; flist != cur_flist; flist = flist->next)
2158                                 old_total += flist->used;
2159                         maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2160                 }
2161
2162                 if (delete_during == 2 || !dir_tweaking) {
2163                         /* Skip directory touch-up. */
2164                 } else if (first_flist->parent_ndx >= 0)
2165                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
2166
2167                 flist_free(first_flist); /* updates first_flist */
2168         }
2169 }
2170
2171 void generate_files(int f_out, const char *local_name)
2172 {
2173         int i, ndx, next_loopchk = 0;
2174         char fbuf[MAXPATHLEN];
2175         int itemizing;
2176         enum logcode code;
2177         int save_info_flist = info_levels[INFO_FLIST];
2178         int save_info_progress = info_levels[INFO_PROGRESS];
2179
2180         if (protocol_version >= 29) {
2181                 itemizing = 1;
2182                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2183                 code = logfile_format_has_i ? FNONE : FLOG;
2184         } else if (am_daemon) {
2185                 itemizing = logfile_format_has_i && do_xfers;
2186                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2187                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2188         } else if (!am_server) {
2189                 itemizing = stdout_format_has_i;
2190                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2191                 code = itemizing ? FNONE : FINFO;
2192         } else {
2193                 itemizing = 0;
2194                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2195                 code = FINFO;
2196         }
2197         solo_file = local_name;
2198         dir_tweaking = !(list_only || solo_file || dry_run);
2199         need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2200         loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2201         symlink_timeset_failed_flags = ITEM_REPORT_TIME
2202             | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2203         implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2204
2205         if (DEBUG_GTE(GENR, 1))
2206                 rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
2207
2208         if (delete_before && !solo_file && cur_flist->used > 0)
2209                 do_delete_pass();
2210         if (delete_during == 2) {
2211                 deldelay_size = BIGPATHBUFLEN * 4;
2212                 deldelay_buf = new_array(char, deldelay_size);
2213                 if (!deldelay_buf)
2214                         out_of_memory("delete-delay");
2215         }
2216         info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2217
2218         if (append_mode > 0 || whole_file < 0)
2219                 whole_file = 0;
2220         if (DEBUG_GTE(FLIST, 1)) {
2221                 rprintf(FINFO, "delta-transmission %s\n",
2222                         whole_file
2223                         ? "disabled for local transfer or --whole-file"
2224                         : "enabled");
2225         }
2226
2227         dflt_perms = (ACCESSPERMS & ~orig_umask);
2228
2229         do {
2230 #ifdef SUPPORT_HARD_LINKS
2231                 if (preserve_hard_links && inc_recurse) {
2232                         while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2233                                 wait_for_receiver();
2234                 }
2235 #endif
2236
2237                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2238                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2239                         if (solo_file)
2240                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2241                         else
2242                                 f_name(fp, fbuf);
2243                         ndx = cur_flist->ndx_start - 1;
2244                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2245                         if (delete_during && dry_run < 2 && !list_only
2246                          && !(fp->flags & FLAG_MISSING_DIR)) {
2247                                 if (fp->flags & FLAG_CONTENT_DIR) {
2248                                         dev_t dirdev;
2249                                         if (one_file_system) {
2250                                                 uint32 *devp = F_DIR_DEV_P(fp);
2251                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2252                                         } else
2253                                                 dirdev = MAKEDEV(0, 0);
2254                                         delete_in_dir(fbuf, fp, &dirdev);
2255                                 } else
2256                                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2257                         }
2258                 }
2259                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2260                         struct file_struct *file = cur_flist->sorted[i];
2261
2262                         if (!F_IS_ACTIVE(file))
2263                                 continue;
2264
2265                         if (unsort_ndx)
2266                                 ndx = F_NDX(file);
2267                         else
2268                                 ndx = i + cur_flist->ndx_start;
2269
2270                         if (solo_file)
2271                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2272                         else
2273                                 f_name(file, fbuf);
2274                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2275
2276                         check_for_finished_files(itemizing, code, 0);
2277
2278                         if (i + cur_flist->ndx_start >= next_loopchk) {
2279                                 if (allowed_lull)
2280                                         maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2281                                 else
2282                                         maybe_flush_socket(0);
2283                                 next_loopchk += loopchk_limit;
2284                         }
2285                 }
2286
2287                 if (!inc_recurse) {
2288                         write_ndx(f_out, NDX_DONE);
2289                         break;
2290                 }
2291
2292                 while (1) {
2293                         check_for_finished_files(itemizing, code, 1);
2294                         if (cur_flist->next || flist_eof)
2295                                 break;
2296                         wait_for_receiver();
2297                 }
2298         } while ((cur_flist = cur_flist->next) != NULL);
2299
2300         if (delete_during)
2301                 delete_in_dir(NULL, NULL, &dev_zero);
2302         phase++;
2303         if (DEBUG_GTE(GENR, 1))
2304                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2305
2306         while (1) {
2307                 check_for_finished_files(itemizing, code, 1);
2308                 if (msgdone_cnt)
2309                         break;
2310                 wait_for_receiver();
2311         }
2312
2313         phase++;
2314         if (DEBUG_GTE(GENR, 1))
2315                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2316
2317         write_ndx(f_out, NDX_DONE);
2318
2319         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2320         if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2321                 write_ndx(f_out, NDX_DONE);
2322
2323         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2324                 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2325                         write_del_stats(f_out);
2326                 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2327                         write_ndx(f_out, NDX_DONE);
2328         }
2329
2330         /* Read MSG_DONE for the redo phase (and any prior messages). */
2331         while (1) {
2332                 check_for_finished_files(itemizing, code, 0);
2333                 if (msgdone_cnt > 1)
2334                         break;
2335                 wait_for_receiver();
2336         }
2337
2338         if (protocol_version >= 29) {
2339                 phase++;
2340                 if (DEBUG_GTE(GENR, 1))
2341                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2342                 if (!EARLY_DELAY_DONE_MSG()) {
2343                         write_ndx(f_out, NDX_DONE);
2344                         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2345                                 write_ndx(f_out, NDX_DONE);
2346                 }
2347                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2348                 while (msgdone_cnt == 2)
2349                         wait_for_receiver();
2350         }
2351
2352         info_levels[INFO_FLIST] = save_info_flist;
2353         info_levels[INFO_PROGRESS] = save_info_progress;
2354
2355         if (delete_during == 2)
2356                 do_delayed_deletions(fbuf);
2357         if (delete_after && !solo_file && file_total > 0)
2358                 do_delete_pass();
2359
2360         if (max_delete >= 0 && skipped_deletes) {
2361                 rprintf(FWARNING,
2362                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2363                         skipped_deletes);
2364                 io_error |= IOERR_DEL_LIMIT;
2365         }
2366
2367         if (protocol_version >= 31) {
2368                 if (!EARLY_DELETE_DONE_MSG()) {
2369                         if (INFO_GTE(STATS, 2) || read_batch)
2370                                 write_del_stats(f_out);
2371                         write_ndx(f_out, NDX_DONE);
2372                 }
2373
2374                 /* Read MSG_DONE for late-delete phase & prior messages. */
2375                 while (msgdone_cnt == 3)
2376                         wait_for_receiver();
2377         }
2378
2379         if ((need_retouch_dir_perms || need_retouch_dir_times)
2380          && dir_tweaking && (!inc_recurse || delete_during == 2))
2381                 touch_up_dirs(dir_flist, -1);
2382
2383         if (DEBUG_GTE(GENR, 1))
2384                 rprintf(FINFO, "generate_files finished\n");
2385 }