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) 2003-2007 Wayne Davison
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, visit the http://fsf.org website.
  21  */
  22
  23 #include "rsync.h"
  24
  25 extern int verbose;
  26 extern int dry_run;
  27 extern int do_xfers;
  28 extern int stdout_format_has_i;
  29 extern int logfile_format_has_i;
  30 extern int am_root;
  31 extern int am_server;
  32 extern int am_daemon;
  33 extern int inc_recurse;
  34 extern int do_progress;
  35 extern int relative_paths;
  36 extern int implied_dirs;
  37 extern int keep_dirlinks;
  38 extern int preserve_acls;
  39 extern int preserve_xattrs;
  40 extern int preserve_links;
  41 extern int preserve_devices;
  42 extern int preserve_specials;
  43 extern int preserve_hard_links;
  44 extern int preserve_perms;
  45 extern int preserve_times;
  46 extern int uid_ndx;
  47 extern int gid_ndx;
  48 extern int delete_mode;
  49 extern int delete_before;
  50 extern int delete_during;
  51 extern int delete_after;
  52 extern int msgdone_cnt;
  53 extern int ignore_errors;
  54 extern int remove_source_files;
  55 extern int delay_updates;
  56 extern int update_only;
  57 extern int ignore_existing;
  58 extern int ignore_non_existing;
  59 extern int inplace;
  60 extern int append_mode;
  61 extern int make_backups;
  62 extern int csum_length;
  63 extern int ignore_times;
  64 extern int size_only;
  65 extern OFF_T max_size;
  66 extern OFF_T min_size;
  67 extern int io_error;
  68 extern int flist_eof;
  69 extern int allowed_lull;
  70 extern int sock_f_out;
  71 extern int ignore_timeout;
  72 extern int protocol_version;
  73 extern int file_total;
  74 extern int fuzzy_basis;
  75 extern int always_checksum;
  76 extern int checksum_len;
  77 extern char *partial_dir;
  78 extern char *basis_dir[];
  79 extern int compare_dest;
  80 extern int copy_dest;
  81 extern int link_dest;
  82 extern int whole_file;
  83 extern int list_only;
  84 extern int read_batch;
  85 extern int safe_symlinks;
  86 extern long block_size; /* "long" because popt can't set an int32. */
  87 extern int max_delete;
  88 extern int force_delete;
  89 extern int one_file_system;
  90 extern struct stats stats;
  91 extern dev_t filesystem_dev;
  92 extern mode_t orig_umask;
  93 extern char *backup_dir;
  94 extern char *backup_suffix;
  95 extern int backup_suffix_len;
  96 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  97 extern struct filter_list_struct server_filter_list;
  98 #ifdef ICONV_OPTION
  99 extern int ic_ndx;
 100 #endif
 101
 102 int ignore_perishable = 0;
 103 int non_perishable_cnt = 0;
 104 int maybe_ATTRS_REPORT = 0;
 105
 106 static dev_t dev_zero;
 107 static int deletion_count = 0; /* used to implement --max-delete */
 108 static int deldelay_size = 0, deldelay_cnt = 0;
 109 static char *deldelay_buf = NULL;
 110 static int deldelay_fd = -1;
 111 static int lull_mod;
 112 static int dir_tweaking;
 113 static int need_retouch_dir_times;
 114 static int need_retouch_dir_perms;
 115 static const char *solo_file = NULL;
 116
 117 /* For calling delete_item() and delete_dir_contents(). */
 118 #define DEL_RECURSE             (1<<1) /* recurse */
 119 #define DEL_DIR_IS_EMPTY        (1<<2) /* internal delete_FUNCTIONS use only */
 120
 121 enum nonregtype {
 122     TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
 123 };
 124
 125 enum delret {
 126     DR_SUCCESS = 0, DR_FAILURE, DR_AT_LIMIT, DR_NOT_EMPTY
 127 };
 128
 129 /* Forward declaration for delete_item(). */
 130 static enum delret delete_dir_contents(char *fname, int flags);
 131
 132
 133 static int is_backup_file(char *fn)
 134 {
 135         int k = strlen(fn) - backup_suffix_len;
 136         return k > 0 && strcmp(fn+k, backup_suffix) == 0;
 137 }
 138
 139 /* Delete a file or directory.  If DEL_RECURSE is set in the flags, this will
 140  * delete recursively.
 141  *
 142  * Note that fbuf must point to a MAXPATHLEN buffer if the mode indicates it's
 143  * a directory! (The buffer is used for recursion, but returned unchanged.)
 144  */
 145 static enum delret delete_item(char *fbuf, int mode, char *replace, int flags)
 146 {
 147         enum delret ret;
 148         char *what;
 149         int ok;
 150
 151         if (verbose > 2) {
 152                 rprintf(FINFO, "delete_item(%s) mode=%o flags=%d\n",
 153                         fbuf, mode, flags);
 154         }
 155
 156         if (S_ISDIR(mode) && !(flags & DEL_DIR_IS_EMPTY)) {
 157                 ignore_perishable = 1;
 158                 /* If DEL_RECURSE is not set, this just reports emptiness. */
 159                 ret = delete_dir_contents(fbuf, flags);
 160                 ignore_perishable = 0;
 161                 if (ret == DR_NOT_EMPTY || ret == DR_AT_LIMIT)
 162                         goto check_ret;
 163                 /* OK: try to delete the directory. */
 164         }
 165
 166         if (!replace && max_delete >= 0 && ++deletion_count > max_delete)
 167                 return DR_AT_LIMIT;
 168
 169         if (S_ISDIR(mode)) {
 170                 what = "rmdir";
 171                 ok = do_rmdir(fbuf) == 0;
 172         } else if (make_backups > 0 && (backup_dir || !is_backup_file(fbuf))) {
 173                 what = "make_backup";
 174                 ok = make_backup(fbuf);
 175         } else {
 176                 what = "unlink";
 177                 ok = robust_unlink(fbuf) == 0;
 178         }
 179
 180         if (ok) {
 181                 if (!replace)
 182                         log_delete(fbuf, mode);
 183                 ret = DR_SUCCESS;
 184         } else {
 185                 if (S_ISDIR(mode) && errno == ENOTEMPTY) {
 186                         rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 187                                 fbuf);
 188                         ret = DR_NOT_EMPTY;
 189                 } else if (errno != ENOENT) {
 190                         rsyserr(FERROR, errno, "delete_file: %s(%s) failed",
 191                                 what, fbuf);
 192                         ret = DR_FAILURE;
 193                 } else {
 194                         deletion_count--;
 195                         ret = DR_SUCCESS;
 196                 }
 197         }
 198
 199   check_ret:
 200         if (replace && ret != DR_SUCCESS) {
 201                 rprintf(FERROR, "could not make way for new %s: %s\n",
 202                         replace, fbuf);
 203         }
 204         return ret;
 205 }
 206
 207 /* The directory is about to be deleted: if DEL_RECURSE is given, delete all
 208  * its contents, otherwise just checks for content.  Returns DR_SUCCESS or
 209  * DR_NOT_EMPTY.  Note that fname must point to a MAXPATHLEN buffer!  (The
 210  * buffer is used for recursion, but returned unchanged.)
 211  */
 212 static enum delret delete_dir_contents(char *fname, int flags)
 213 {
 214         struct file_list *dirlist;
 215         enum delret ret;
 216         unsigned remainder;
 217         void *save_filters;
 218         int j, dlen;
 219         char *p;
 220
 221         if (verbose > 3) {
 222                 rprintf(FINFO, "delete_dir_contents(%s) flags=%d\n",
 223                         fname, flags);
 224         }
 225
 226         dlen = strlen(fname);
 227         save_filters = push_local_filters(fname, dlen);
 228
 229         non_perishable_cnt = 0;
 230         dirlist = get_dirlist(fname, dlen, 0);
 231         ret = non_perishable_cnt ? DR_NOT_EMPTY : DR_SUCCESS;
 232
 233         if (!dirlist->used)
 234                 goto done;
 235
 236         if (!(flags & DEL_RECURSE)) {
 237                 ret = DR_NOT_EMPTY;
 238                 goto done;
 239         }
 240
 241         p = fname + dlen;
 242         if (dlen != 1 || *fname != '/')
 243                 *p++ = '/';
 244         remainder = MAXPATHLEN - (p - fname);
 245
 246         /* We do our own recursion, so make delete_item() non-recursive. */
 247         flags = (flags & ~DEL_RECURSE) | DEL_DIR_IS_EMPTY;
 248
 249         for (j = dirlist->used; j--; ) {
 250                 struct file_struct *fp = dirlist->files[j];
 251
 252                 if (fp->flags & FLAG_MOUNT_DIR) {
 253                         if (verbose > 1) {
 254                                 rprintf(FINFO,
 255                                     "mount point, %s, pins parent directory\n",
 256                                     f_name(fp, NULL));
 257                         }
 258                         ret = DR_NOT_EMPTY;
 259                         continue;
 260                 }
 261
 262                 strlcpy(p, fp->basename, remainder);
 263                 /* Save stack by recursing to ourself directly. */
 264                 if (S_ISDIR(fp->mode)
 265                  && delete_dir_contents(fname, flags | DEL_RECURSE) != DR_SUCCESS)
 266                         ret = DR_NOT_EMPTY;
 267                 if (delete_item(fname, fp->mode, NULL, flags) != DR_SUCCESS)
 268                         ret = DR_NOT_EMPTY;
 269         }
 270
 271         fname[dlen] = '\0';
 272
 273   done:
 274         flist_free(dirlist);
 275         pop_local_filters(save_filters);
 276
 277         if (ret == DR_NOT_EMPTY) {
 278                 rprintf(FINFO, "cannot delete non-empty directory: %s\n",
 279                         fname);
 280         }
 281         return ret;
 282 }
 283
 284 static int start_delete_delay_temp(void)
 285 {
 286         char fnametmp[MAXPATHLEN];
 287         int save_dry_run = dry_run;
 288
 289         dry_run = 0;
 290         if (!get_tmpname(fnametmp, "deldelay")
 291          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 292                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 293                         inc_recurse ? "" : " -- switching to --delete-after");
 294                 delete_during = 0;
 295                 delete_after = !inc_recurse;
 296                 dry_run = save_dry_run;
 297                 return 0;
 298         }
 299         unlink(fnametmp);
 300         dry_run = save_dry_run;
 301         return 1;
 302 }
 303
 304 static int flush_delete_delay(void)
 305 {
 306         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 307                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 308                 delete_during = 0;
 309                 delete_after = 1;
 310                 close(deldelay_fd);
 311                 return 0;
 312         }
 313         deldelay_cnt = 0;
 314         return 1;
 315 }
 316
 317 static int remember_delete(struct file_struct *file, const char *fname)
 318 {
 319         int len;
 320
 321         while (1) {
 322                 len = snprintf(deldelay_buf + deldelay_cnt,
 323                                deldelay_size - deldelay_cnt,
 324                                "%x %s%c", (int)file->mode, fname, '\0');
 325                 if ((deldelay_cnt += len) <= deldelay_size)
 326                         break;
 327                 if (deldelay_fd < 0 && !start_delete_delay_temp())
 328                         return 0;
 329                 deldelay_cnt -= len;
 330                 if (!flush_delete_delay())
 331                         return 0;
 332         }
 333
 334         return 1;
 335 }
 336
 337 static int read_delay_line(char *buf)
 338 {
 339         static int read_pos = 0;
 340         int j, len, mode;
 341         char *bp, *past_space;
 342
 343         while (1) {
 344                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 345                 if (j < deldelay_cnt)
 346                         break;
 347                 if (deldelay_fd < 0) {
 348                         if (j > read_pos)
 349                                 goto invalid_data;
 350                         return -1;
 351                 }
 352                 deldelay_cnt -= read_pos;
 353                 if (deldelay_cnt == deldelay_size)
 354                         goto invalid_data;
 355                 if (deldelay_cnt && read_pos) {
 356                         memmove(deldelay_buf, deldelay_buf + read_pos,
 357                                 deldelay_cnt);
 358                 }
 359                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 360                            deldelay_size - deldelay_cnt);
 361                 if (len == 0) {
 362                         if (deldelay_cnt) {
 363                                 rprintf(FERROR,
 364                                     "ERROR: unexpected EOF in delete-delay file.\n");
 365                         }
 366                         return -1;
 367                 }
 368                 if (len < 0) {
 369                         rsyserr(FERROR, errno,
 370                                 "reading delete-delay file");
 371                         return -1;
 372                 }
 373                 deldelay_cnt += len;
 374                 read_pos = 0;
 375         }
 376
 377         bp = deldelay_buf + read_pos;
 378
 379         if (sscanf(bp, "%x ", &mode) != 1) {
 380           invalid_data:
 381                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 382                 return -1;
 383         }
 384         past_space = strchr(bp, ' ') + 1;
 385         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 386         read_pos = j + 1;
 387
 388         if (len > MAXPATHLEN) {
 389                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 390                 return -1;
 391         }
 392
 393         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 394          * instead of returning a pointer to our buffer. */
 395         memcpy(buf, past_space, len);
 396
 397         return mode;
 398 }
 399
 400 static void do_delayed_deletions(char *delbuf)
 401 {
 402         int mode;
 403
 404         if (deldelay_fd >= 0) {
 405                 if (deldelay_cnt && !flush_delete_delay())
 406                         return;
 407                 lseek(deldelay_fd, 0, 0);
 408         }
 409         while ((mode = read_delay_line(delbuf)) >= 0)
 410                 delete_item(delbuf, mode, NULL, DEL_RECURSE);
 411         if (deldelay_fd >= 0)
 412                 close(deldelay_fd);
 413 }
 414
 415 /* This function is used to implement per-directory deletion, and is used by
 416  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 417  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 418  * call will append names onto the end, but the old dir value will be restored
 419  * on exit). */
 420 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 421 {
 422         static int already_warned = 0;
 423         struct file_list *dirlist;
 424         char delbuf[MAXPATHLEN];
 425         int dlen, i;
 426
 427         if (!fbuf) {
 428                 change_local_filter_dir(NULL, 0, 0);
 429                 return;
 430         }
 431
 432         if (verbose > 2)
 433                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 434
 435         if (allowed_lull)
 436                 maybe_send_keepalive();
 437
 438         if (io_error && !ignore_errors) {
 439                 if (already_warned)
 440                         return;
 441                 rprintf(FINFO,
 442                         "IO error encountered -- skipping file deletion\n");
 443                 already_warned = 1;
 444                 return;
 445         }
 446
 447         dlen = strlen(fbuf);
 448         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 449
 450         if (one_file_system) {
 451                 if (file->flags & FLAG_TOP_DIR)
 452                         filesystem_dev = *fs_dev;
 453                 else if (filesystem_dev != *fs_dev)
 454                         return;
 455         }
 456
 457         dirlist = get_dirlist(fbuf, dlen, 0);
 458
 459         /* If an item in dirlist is not found in flist, delete it
 460          * from the filesystem. */
 461         for (i = dirlist->used; i--; ) {
 462                 struct file_struct *fp = dirlist->files[i];
 463                 if (!F_IS_ACTIVE(fp))
 464                         continue;
 465                 if (fp->flags & FLAG_MOUNT_DIR) {
 466                         if (verbose > 1)
 467                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 468                                         f_name(fp, NULL));
 469                         continue;
 470                 }
 471                 if (flist_find(cur_flist, fp) < 0) {
 472                         f_name(fp, delbuf);
 473                         if (delete_during == 2) {
 474                                 if (!remember_delete(fp, delbuf))
 475                                         break;
 476                         } else
 477                                 delete_item(delbuf, fp->mode, NULL, DEL_RECURSE);
 478                 }
 479         }
 480
 481         flist_free(dirlist);
 482 }
 483
 484 /* This deletes any files on the receiving side that are not present on the
 485  * sending side.  This is used by --delete-before and --delete-after. */
 486 static void do_delete_pass(void)
 487 {
 488         char fbuf[MAXPATHLEN];
 489         STRUCT_STAT st;
 490         int j;
 491
 492         /* dry_run is incremented when the destination doesn't exist yet. */
 493         if (dry_run > 1 || list_only)
 494                 return;
 495
 496         for (j = 0; j < cur_flist->used; j++) {
 497                 struct file_struct *file = cur_flist->sorted[j];
 498
 499                 if (!(file->flags & FLAG_CONTENT_DIR))
 500                         continue;
 501
 502                 f_name(file, fbuf);
 503                 if (verbose > 1 && file->flags & FLAG_TOP_DIR)
 504                         rprintf(FINFO, "deleting in %s\n", fbuf);
 505
 506                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 507                  || !S_ISDIR(st.st_mode))
 508                         continue;
 509
 510                 delete_in_dir(fbuf, file, &st.st_dev);
 511         }
 512         delete_in_dir(NULL, NULL, &dev_zero);
 513
 514         if (do_progress && !am_server)
 515                 rprintf(FINFO, "                    \r");
 516 }
 517
 518 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 519 {
 520         if (preserve_perms && !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 521                 return 0;
 522
 523         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 524                 return 0;
 525
 526         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 527                 return 0;
 528
 529 #ifdef SUPPORT_ACLS
 530         if (preserve_acls && !S_ISLNK(file->mode)) {
 531                 if (!ACL_READY(*sxp))
 532                         get_acl(fname, sxp);
 533                 if (set_acl(NULL, file, sxp) == 0)
 534                         return 0;
 535         }
 536 #endif
 537 #ifdef SUPPORT_XATTRS
 538         if (preserve_xattrs) {
 539                 if (!XATTR_READY(*sxp))
 540                         get_xattr(fname, sxp);
 541                 if (xattr_diff(file, sxp, 0))
 542                         return 0;
 543         }
 544 #endif
 545
 546         return 1;
 547 }
 548
 549 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 550              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 551              const char *xname)
 552 {
 553         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 554                 int keep_time = !preserve_times ? 0
 555                     : S_ISDIR(file->mode) ? preserve_times > 1
 556                     : !S_ISLNK(file->mode);
 557
 558                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 559                         iflags |= ITEM_REPORT_SIZE;
 560                 if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
 561                   && !(iflags & ITEM_MATCHED)
 562                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 563                  || (keep_time && cmp_time(file->modtime, sxp->st.st_mtime) != 0))
 564                         iflags |= ITEM_REPORT_TIME;
 565 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 566                 if (S_ISLNK(file->mode)) {
 567                         ;
 568                 } else
 569 #endif
 570                 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 571                         iflags |= ITEM_REPORT_PERMS;
 572                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 573                         iflags |= ITEM_REPORT_OWNER;
 574                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 575                     && sxp->st.st_gid != (gid_t)F_GROUP(file))
 576                         iflags |= ITEM_REPORT_GROUP;
 577 #ifdef SUPPORT_ACLS
 578                 if (preserve_acls && !S_ISLNK(file->mode)) {
 579                         if (!ACL_READY(*sxp))
 580                                 get_acl(fnamecmp, sxp);
 581                         if (set_acl(NULL, file, sxp) == 0)
 582                                 iflags |= ITEM_REPORT_ACL;
 583                 }
 584 #endif
 585 #ifdef SUPPORT_XATTRS
 586                 if (preserve_xattrs) {
 587                         if (!XATTR_READY(*sxp))
 588                                 get_xattr(fnamecmp, sxp);
 589                         if (xattr_diff(file, sxp, 1))
 590                                 iflags |= ITEM_REPORT_XATTR;
 591                 }
 592 #endif
 593         } else {
 594 #ifdef SUPPORT_XATTRS
 595                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 596                         iflags |= ITEM_REPORT_XATTR;
 597 #endif
 598                 iflags |= ITEM_IS_NEW;
 599         }
 600
 601         iflags &= 0xffff;
 602         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || verbose > 1
 603           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 604                 if (protocol_version >= 29) {
 605                         if (ndx >= 0)
 606                                 write_ndx(sock_f_out, ndx);
 607                         write_shortint(sock_f_out, iflags);
 608                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 609                                 write_byte(sock_f_out, fnamecmp_type);
 610                         if (iflags & ITEM_XNAME_FOLLOWS)
 611                                 write_vstring(sock_f_out, xname, strlen(xname));
 612 #ifdef SUPPORT_XATTRS
 613                         if (iflags & ITEM_REPORT_XATTR && !dry_run)
 614                                 send_xattr_request(NULL, file, sock_f_out);
 615 #endif
 616                 } else if (ndx >= 0) {
 617                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 618                         log_item(code, file, &stats, iflags, xname);
 619                 }
 620         }
 621 }
 622
 623
 624 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 625 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 626 {
 627         if (st->st_size != F_LENGTH(file))
 628                 return 0;
 629
 630         /* if always checksum is set then we use the checksum instead
 631            of the file time to determine whether to sync */
 632         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 633                 char sum[MAX_DIGEST_LEN];
 634                 file_checksum(fn, sum, st->st_size);
 635                 return memcmp(sum, F_SUM(file), checksum_len) == 0;
 636         }
 637
 638         if (size_only > 0)
 639                 return 1;
 640
 641         if (ignore_times)
 642                 return 0;
 643
 644         return cmp_time(st->st_mtime, file->modtime) == 0;
 645 }
 646
 647
 648 /*
 649  * set (initialize) the size entries in the per-file sum_struct
 650  * calculating dynamic block and checksum sizes.
 651  *
 652  * This is only called from generate_and_send_sums() but is a separate
 653  * function to encapsulate the logic.
 654  *
 655  * The block size is a rounded square root of file length.
 656  *
 657  * The checksum size is determined according to:
 658  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 659  * provided by Donovan Baarda which gives a probability of rsync
 660  * algorithm corrupting data and falling back using the whole md4
 661  * checksums.
 662  *
 663  * This might be made one of several selectable heuristics.
 664  */
 665 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 666 {
 667         int32 blength;
 668         int s2length;
 669
 670         if (block_size)
 671                 blength = block_size;
 672         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 673                 blength = BLOCK_SIZE;
 674         else {
 675                 int32 c;
 676                 int64 l;
 677                 int cnt;
 678                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 679                 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
 680                         blength = MAX_BLOCK_SIZE;
 681                 else {
 682                     blength = 0;
 683                     do {
 684                             blength |= c;
 685                             if (len < (int64)blength * blength)
 686                                     blength &= ~c;
 687                             c >>= 1;
 688                     } while (c >= 8);   /* round to multiple of 8 */
 689                     blength = MAX(blength, BLOCK_SIZE);
 690                 }
 691         }
 692
 693         if (protocol_version < 27) {
 694                 s2length = csum_length;
 695         } else if (csum_length == SUM_LENGTH) {
 696                 s2length = SUM_LENGTH;
 697         } else {
 698                 int32 c;
 699                 int64 l;
 700                 int b = BLOCKSUM_BIAS;
 701                 for (l = len; l >>= 1; b += 2) {}
 702                 for (c = blength; (c >>= 1) && b; b--) {}
 703                 /* add a bit, subtract rollsum, round up. */
 704                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 705                 s2length = MAX(s2length, csum_length);
 706                 s2length = MIN(s2length, SUM_LENGTH);
 707         }
 708
 709         sum->flength    = len;
 710         sum->blength    = blength;
 711         sum->s2length   = s2length;
 712         sum->remainder  = (int32)(len % blength);
 713         sum->count      = (int32)(len / blength) + (sum->remainder != 0);
 714
 715         if (sum->count && verbose > 2) {
 716                 rprintf(FINFO,
 717                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 718                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 719                         sum->s2length, (double)sum->flength);
 720         }
 721 }
 722
 723
 724 /*
 725  * Generate and send a stream of signatures/checksums that describe a buffer
 726  *
 727  * Generate approximately one checksum every block_len bytes.
 728  */
 729 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 730 {
 731         int32 i;
 732         struct map_struct *mapbuf;
 733         struct sum_struct sum;
 734         OFF_T offset = 0;
 735
 736         sum_sizes_sqroot(&sum, len);
 737         write_sum_head(f_out, &sum);
 738
 739         if (append_mode > 0 && f_copy < 0)
 740                 return;
 741
 742         if (len > 0)
 743                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 744         else
 745                 mapbuf = NULL;
 746
 747         for (i = 0; i < sum.count; i++) {
 748                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 749                 char *map = map_ptr(mapbuf, offset, n1);
 750                 char sum2[SUM_LENGTH];
 751                 uint32 sum1;
 752
 753                 len -= n1;
 754                 offset += n1;
 755
 756                 if (f_copy >= 0) {
 757                         full_write(f_copy, map, n1);
 758                         if (append_mode > 0)
 759                                 continue;
 760                 }
 761
 762                 sum1 = get_checksum1(map, n1);
 763                 get_checksum2(map, n1, sum2);
 764
 765                 if (verbose > 3) {
 766                         rprintf(FINFO,
 767                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 768                                 (double)i, (double)offset - n1, (long)n1,
 769                                 (unsigned long)sum1);
 770                 }
 771                 write_int(f_out, sum1);
 772                 write_buf(f_out, sum2, sum.s2length);
 773         }
 774
 775         if (mapbuf)
 776                 unmap_file(mapbuf);
 777 }
 778
 779
 780 /* Try to find a filename in the same dir as "fname" with a similar name. */
 781 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 782 {
 783         int fname_len, fname_suf_len;
 784         const char *fname_suf, *fname = file->basename;
 785         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 786         int j, lowest_j = -1;
 787
 788         fname_len = strlen(fname);
 789         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 790
 791         for (j = 0; j < dirlist->used; j++) {
 792                 struct file_struct *fp = dirlist->files[j];
 793                 const char *suf, *name;
 794                 int len, suf_len;
 795                 uint32 dist;
 796
 797                 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
 798                  || fp->flags & FLAG_FILE_SENT)
 799                         continue;
 800
 801                 name = fp->basename;
 802
 803                 if (F_LENGTH(fp) == F_LENGTH(file)
 804                     && cmp_time(fp->modtime, file->modtime) == 0) {
 805                         if (verbose > 4) {
 806                                 rprintf(FINFO,
 807                                         "fuzzy size/modtime match for %s\n",
 808                                         name);
 809                         }
 810                         return j;
 811                 }
 812
 813                 len = strlen(name);
 814                 suf = find_filename_suffix(name, len, &suf_len);
 815
 816                 dist = fuzzy_distance(name, len, fname, fname_len);
 817                 /* Add some extra weight to how well the suffixes match. */
 818                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 819                       * 10;
 820                 if (verbose > 4) {
 821                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 822                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 823                 }
 824                 if (dist <= lowest_dist) {
 825                         lowest_dist = dist;
 826                         lowest_j = j;
 827                 }
 828         }
 829
 830         return lowest_j;
 831 }
 832
 833 /* Copy a file found in our --copy-dest handling. */
 834 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 835 {
 836         char buf[MAXPATHLEN];
 837         const char *copy_to, *partialptr;
 838         int fd_w;
 839
 840         if (inplace) {
 841                 /* Let copy_file open the destination in place. */
 842                 fd_w = -1;
 843                 copy_to = dest;
 844         } else {
 845                 fd_w = open_tmpfile(buf, dest, file);
 846                 if (fd_w < 0)
 847                         return -1;
 848                 copy_to = buf;
 849         }
 850         cleanup_set(copy_to, NULL, NULL, -1, -1);
 851         if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
 852                 if (verbose) {
 853                         rsyserr(FINFO, errno, "copy_file %s => %s",
 854                                 full_fname(src), copy_to);
 855                 }
 856                 /* Try to clean up. */
 857                 unlink(copy_to);
 858                 cleanup_disable();
 859                 return -1;
 860         }
 861         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 862         if (partialptr && *partialptr == '/')
 863                 partialptr = NULL;
 864         finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 865         cleanup_disable();
 866         return 0;
 867 }
 868
 869 /* This is only called for regular files.  We return -2 if we've finished
 870  * handling the file, -1 if no dest-linking occurred, or a non-negative
 871  * value if we found an alternate basis file. */
 872 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 873                          char *cmpbuf, stat_x *sxp, int itemizing,
 874                          enum logcode code)
 875 {
 876         int best_match = -1;
 877         int match_level = 0;
 878         int j = 0;
 879
 880         do {
 881                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 882                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 883                         continue;
 884                 switch (match_level) {
 885                 case 0:
 886                         best_match = j;
 887                         match_level = 1;
 888                         /* FALL THROUGH */
 889                 case 1:
 890                         if (!unchanged_file(cmpbuf, file, &sxp->st))
 891                                 continue;
 892                         best_match = j;
 893                         match_level = 2;
 894                         /* FALL THROUGH */
 895                 case 2:
 896                         if (!unchanged_attrs(cmpbuf, file, sxp))
 897                                 continue;
 898                         if (always_checksum > 0 && preserve_times
 899                          && cmp_time(sxp->st.st_mtime, file->modtime))
 900                                 continue;
 901                         best_match = j;
 902                         match_level = 3;
 903                         break;
 904                 }
 905                 break;
 906         } while (basis_dir[++j] != NULL);
 907
 908         if (!match_level)
 909                 return -1;
 910
 911         if (j != best_match) {
 912                 j = best_match;
 913                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 914                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
 915                         return -1;
 916         }
 917
 918         if (match_level == 3 && !copy_dest) {
 919 #ifdef SUPPORT_HARD_LINKS
 920                 if (link_dest) {
 921                         if (!hard_link_one(file, fname, cmpbuf, 1))
 922                                 goto try_a_copy;
 923                         if (preserve_hard_links && F_IS_HLINKED(file))
 924                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
 925                         if (itemizing && (verbose > 1 || stdout_format_has_i > 1)) {
 926                                 itemize(cmpbuf, file, ndx, 1, sxp,
 927                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 928                                         0, "");
 929                         }
 930                 } else
 931 #endif
 932                 if (itemizing)
 933                         itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
 934                 if (verbose > 1 && maybe_ATTRS_REPORT)
 935                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 936                 return -2;
 937         }
 938
 939         if (match_level >= 2) {
 940 #ifdef SUPPORT_HARD_LINKS
 941           try_a_copy: /* Copy the file locally. */
 942 #endif
 943                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
 944                         return -1;
 945                 if (itemizing)
 946                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
 947 #ifdef SUPPORT_XATTRS
 948                 if (preserve_xattrs)
 949                         xattr_clear_locals(file);
 950 #endif
 951                 if (maybe_ATTRS_REPORT
 952                  && ((!itemizing && verbose && match_level == 2)
 953                   || (verbose > 1 && 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
 968 /* This is only called for non-regular files.  We return -2 if we've finished
 969  * handling the file, or -1 if no dest-linking occurred, or a non-negative
 970  * value if we found an alternate basis file. */
 971 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 972                          char *cmpbuf, stat_x *sxp, int itemizing,
 973                          enum logcode code)
 974 {
 975         char lnk[MAXPATHLEN];
 976         int best_match = -1;
 977         int match_level = 0;
 978         enum nonregtype type;
 979         uint32 *devp;
 980         int len, j = 0;
 981
 982 #ifndef SUPPORT_LINKS
 983         if (S_ISLNK(file->mode))
 984                 return -1;
 985 #endif
 986         if (S_ISDIR(file->mode)) {
 987                 type = TYPE_DIR;
 988         } else if (IS_SPECIAL(file->mode))
 989                 type = TYPE_SPECIAL;
 990         else if (IS_DEVICE(file->mode))
 991                 type = TYPE_DEVICE;
 992 #ifdef SUPPORT_LINKS
 993         else if (S_ISLNK(file->mode))
 994                 type = TYPE_SYMLINK;
 995 #endif
 996         else {
 997                 rprintf(FERROR,
 998                         "internal: try_dests_non() called with invalid mode (%o)\n",
 999                         (int)file->mode);
1000                 exit_cleanup(RERR_UNSUPPORTED);
1001         }
1002
1003         do {
1004                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1005                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1006                         continue;
1007                 switch (type) {
1008                 case TYPE_DIR:
1009                         if (!S_ISDIR(sxp->st.st_mode))
1010                                 continue;
1011                         break;
1012                 case TYPE_SPECIAL:
1013                         if (!IS_SPECIAL(sxp->st.st_mode))
1014                                 continue;
1015                         break;
1016                 case TYPE_DEVICE:
1017                         if (!IS_DEVICE(sxp->st.st_mode))
1018                                 continue;
1019                         break;
1020 #ifdef SUPPORT_LINKS
1021                 case TYPE_SYMLINK:
1022                         if (!S_ISLNK(sxp->st.st_mode))
1023                                 continue;
1024                         break;
1025 #endif
1026                 }
1027                 if (match_level < 1) {
1028                         match_level = 1;
1029                         best_match = j;
1030                 }
1031                 switch (type) {
1032                 case TYPE_DIR:
1033                         break;
1034                 case TYPE_SPECIAL:
1035                 case TYPE_DEVICE:
1036                         devp = F_RDEV_P(file);
1037                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1038                                 continue;
1039                         break;
1040 #ifdef SUPPORT_LINKS
1041                 case TYPE_SYMLINK:
1042                         if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1043                                 continue;
1044                         lnk[len] = '\0';
1045                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1046                                 continue;
1047                         break;
1048 #endif
1049                 }
1050                 if (match_level < 2) {
1051                         match_level = 2;
1052                         best_match = j;
1053                 }
1054                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1055                         match_level = 3;
1056                         best_match = j;
1057                         break;
1058                 }
1059         } while (basis_dir[++j] != NULL);
1060
1061         if (!match_level)
1062                 return -1;
1063
1064         if (j != best_match) {
1065                 j = best_match;
1066                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1067                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1068                         return -1;
1069         }
1070
1071         if (match_level == 3) {
1072 #ifdef SUPPORT_HARD_LINKS
1073                 if (link_dest
1074 #ifndef CAN_HARDLINK_SYMLINK
1075                  && !S_ISLNK(file->mode)
1076 #endif
1077 #ifndef CAN_HARDLINK_SPECIAL
1078                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1079 #endif
1080                  && !S_ISDIR(file->mode)) {
1081                         if (do_link(cmpbuf, fname) < 0) {
1082                                 rsyserr(FERROR, errno,
1083                                         "failed to hard-link %s with %s",
1084                                         cmpbuf, fname);
1085                                 return j;
1086                         }
1087                         if (preserve_hard_links && F_IS_HLINKED(file))
1088                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1089                 } else
1090 #endif
1091                         match_level = 2;
1092                 if (itemizing && stdout_format_has_i
1093                  && (verbose > 1 || stdout_format_has_i > 1)) {
1094                         int chg = compare_dest && type != TYPE_DIR ? 0
1095                             : ITEM_LOCAL_CHANGE
1096                              + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1097                         char *lp = match_level == 3 ? "" : NULL;
1098                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1099                 }
1100                 if (verbose > 1 && maybe_ATTRS_REPORT) {
1101                         rprintf(FCLIENT, "%s%s is uptodate\n",
1102                                 fname, type == TYPE_DIR ? "/" : "");
1103                 }
1104                 return -2;
1105         }
1106
1107         return j;
1108 }
1109
1110 static void list_file_entry(struct file_struct *f)
1111 {
1112         char permbuf[PERMSTRING_SIZE];
1113         double len;
1114
1115         if (!F_IS_ACTIVE(f)) {
1116                 /* this can happen if duplicate names were removed */
1117                 return;
1118         }
1119
1120         permstring(permbuf, f->mode);
1121         len = F_LENGTH(f);
1122
1123         /* TODO: indicate '+' if the entry has an ACL. */
1124
1125 #ifdef SUPPORT_LINKS
1126         if (preserve_links && S_ISLNK(f->mode)) {
1127                 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
1128                         permbuf, len, timestring(f->modtime),
1129                         f_name(f, NULL), F_SYMLINK(f));
1130         } else
1131 #endif
1132         {
1133                 rprintf(FINFO, "%s %11.0f %s %s\n",
1134                         permbuf, len, timestring(f->modtime),
1135                         f_name(f, NULL));
1136         }
1137 }
1138
1139 static int phase = 0;
1140 static int dflt_perms;
1141
1142 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1143  * make sure it exists, and has the right permissions/timestamp info.  For
1144  * all other non-regular files (symlinks, etc.) we create them here.  For
1145  * regular files that have changed, we try to find a basis file and then
1146  * start sending checksums.  The ndx is the file's unique index value.
1147  *
1148  * When fname is non-null, it must point to a MAXPATHLEN buffer!
1149  *
1150  * Note that f_out is set to -1 when doing final directory-permission and
1151  * modification-time repair. */
1152 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1153                            int itemizing, enum logcode code, int f_out)
1154 {
1155         static int missing_below = -1, excluded_below = -1;
1156         static const char *parent_dirname = "";
1157         static struct file_struct *missing_dir = NULL, *excluded_dir = NULL;
1158         static struct file_list *fuzzy_dirlist = NULL;
1159         static int need_fuzzy_dirlist = 0;
1160         struct file_struct *fuzzy_file = NULL;
1161         int fd = -1, f_copy = -1;
1162         stat_x sx, real_sx;
1163         STRUCT_STAT partial_st;
1164         struct file_struct *back_file = NULL;
1165         int statret, real_ret, stat_errno;
1166         char *fnamecmp, *partialptr, *backupptr = NULL;
1167         char fnamecmpbuf[MAXPATHLEN];
1168         uchar fnamecmp_type;
1169         int implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
1170         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1171
1172         if (verbose > 2)
1173                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1174
1175         if (list_only) {
1176                 if (S_ISDIR(file->mode)
1177                  && ((!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1178                   || (inc_recurse && ndx != cur_flist->ndx_start - 1)))
1179                         return;
1180                 list_file_entry(file);
1181                 return;
1182         }
1183
1184         if (server_filter_list.head) {
1185                 if (excluded_below >= 0) {
1186                         if (F_DEPTH(file) > excluded_below
1187                          && (!implied_dirs_are_missing || f_name_has_prefix(file, excluded_dir)))
1188                                 goto skipping;
1189                         excluded_below = -1;
1190                 }
1191                 if (check_filter(&server_filter_list, fname,
1192                                  S_ISDIR(file->mode)) < 0) {
1193                         if (S_ISDIR(file->mode)) {
1194                                 excluded_below = F_DEPTH(file);
1195                                 excluded_dir = file;
1196                         }
1197                   skipping:
1198                         if (verbose) {
1199                                 rprintf(FINFO,
1200                                         "skipping server-excluded file \"%s\"\n",
1201                                         fname);
1202                         }
1203                         return;
1204                 }
1205         }
1206
1207         if (missing_below >= 0) {
1208                 if (F_DEPTH(file) <= missing_below
1209                  || (implied_dirs_are_missing && !f_name_has_prefix(file, missing_dir))) {
1210                         if (dry_run)
1211                                 dry_run--;
1212                         missing_below = -1;
1213                 } else if (!dry_run) {
1214                         if (S_ISDIR(file->mode))
1215                                 file->flags |= FLAG_MISSING_DIR;
1216                         return;
1217                 }
1218         }
1219 #ifdef SUPPORT_ACLS
1220         sx.acc_acl = sx.def_acl = NULL;
1221 #endif
1222 #ifdef SUPPORT_XATTRS
1223         sx.xattr = NULL;
1224 #endif
1225         if (dry_run > 1) {
1226                 if (fuzzy_dirlist) {
1227                         flist_free(fuzzy_dirlist);
1228                         fuzzy_dirlist = NULL;
1229                 }
1230                 parent_dirname = "";
1231                 statret = -1;
1232                 stat_errno = ENOENT;
1233         } else {
1234                 const char *dn = file->dirname ? file->dirname : ".";
1235                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1236                         if (relative_paths && !implied_dirs
1237                          && do_stat(dn, &sx.st) < 0
1238                          && create_directory_path(fname) < 0) {
1239                                 rsyserr(FERROR, errno,
1240                                         "recv_generator: mkdir %s failed",
1241                                         full_fname(dn));
1242                         }
1243                         if (fuzzy_dirlist) {
1244                                 flist_free(fuzzy_dirlist);
1245                                 fuzzy_dirlist = NULL;
1246                         }
1247                         if (fuzzy_basis)
1248                                 need_fuzzy_dirlist = 1;
1249 #ifdef SUPPORT_ACLS
1250                         if (!preserve_perms)
1251                                 dflt_perms = default_perms_for_dir(dn);
1252 #endif
1253                 }
1254                 parent_dirname = dn;
1255
1256                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1257                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1258                         fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1259                         need_fuzzy_dirlist = 0;
1260                 }
1261
1262                 statret = link_stat(fname, &sx.st,
1263                                     keep_dirlinks && S_ISDIR(file->mode));
1264                 stat_errno = errno;
1265         }
1266
1267         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1268                 if (verbose > 1) {
1269                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1270                                 S_ISDIR(file->mode) ? "directory" : "file",
1271                                 fname);
1272                 }
1273                 if (S_ISDIR(file->mode)) {
1274                         if (missing_below < 0) {
1275                                 if (dry_run)
1276                                         dry_run++;
1277                                 missing_below = F_DEPTH(file);
1278                                 missing_dir = file;
1279                         }
1280                         file->flags |= FLAG_MISSING_DIR;
1281                 }
1282                 return;
1283         }
1284
1285         if (S_ISDIR(file->mode)) {
1286                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1287                         goto cleanup;
1288                 if (inc_recurse && ndx != cur_flist->ndx_start - 1) {
1289                         /* In inc_recurse mode we want to make sure any missing
1290                          * directories get created while we're still processing
1291                          * the parent dir (which allows us to touch the parent
1292                          * dir's mtime right away).  We will handle the dir in
1293                          * full later (right before we handle its contents). */
1294                         if (statret == 0
1295                          && (S_ISDIR(sx.st.st_mode)
1296                           || delete_item(fname, sx.st.st_mode, "directory", del_opts) != 0))
1297                                 goto cleanup; /* Any errors get reported later. */
1298                         if (do_mkdir(fname, file->mode & 0700) == 0)
1299                                 file->flags |= FLAG_DIR_CREATED;
1300                         goto cleanup;
1301                 }
1302                 /* The file to be received is a directory, so we need
1303                  * to prepare appropriately.  If there is already a
1304                  * file of that name and it is *not* a directory, then
1305                  * we need to delete it.  If it doesn't exist, then
1306                  * (perhaps recursively) create it. */
1307                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1308                         if (delete_item(fname, sx.st.st_mode, "directory", del_opts) != 0)
1309                                 goto skipping_dir_contents;
1310                         statret = -1;
1311                 }
1312                 if (dry_run && statret != 0 && missing_below < 0) {
1313                         missing_below = F_DEPTH(file);
1314                         missing_dir = file;
1315                         dry_run++;
1316                 }
1317                 real_ret = statret;
1318                 real_sx = sx;
1319                 if (file->flags & FLAG_DIR_CREATED)
1320                         statret = -1;
1321                 if (!preserve_perms) { /* See comment in non-dir code below. */
1322                         file->mode = dest_mode(file->mode, sx.st.st_mode,
1323                                                dflt_perms, statret == 0);
1324                 }
1325                 if (statret != 0 && basis_dir[0] != NULL) {
1326                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1327                                               itemizing, code);
1328                         if (j == -2) {
1329                                 itemizing = 0;
1330                                 code = FNONE;
1331                         } else if (j >= 0)
1332                                 statret = 1;
1333                 }
1334                 if (itemizing && f_out != -1) {
1335                         itemize(fname, file, ndx, statret, &sx,
1336                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1337                 }
1338                 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1339                         if (!relative_paths || errno != ENOENT
1340                             || create_directory_path(fname) < 0
1341                             || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1342                                 rsyserr(FERROR, errno,
1343                                         "recv_generator: mkdir %s failed",
1344                                         full_fname(fname));
1345                           skipping_dir_contents:
1346                                 rprintf(FERROR,
1347                                     "*** Skipping any contents from this failed directory ***\n");
1348                                 missing_below = F_DEPTH(file);
1349                                 missing_dir = file;
1350                                 file->flags |= FLAG_MISSING_DIR;
1351                                 goto cleanup;
1352                         }
1353                 }
1354                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1355                     && verbose && code != FNONE && f_out != -1)
1356                         rprintf(code, "%s/\n", fname);
1357
1358                 /* We need to ensure that the dirs in the transfer have writable
1359                  * permissions during the time we are putting files within them.
1360                  * This is then fixed after the transfer is done. */
1361 #ifdef HAVE_CHMOD
1362                 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1363                         mode_t mode = file->mode | S_IWUSR;
1364                         if (do_chmod(fname, mode) < 0) {
1365                                 rsyserr(FERROR, errno,
1366                                         "failed to modify permissions on %s",
1367                                         full_fname(fname));
1368                         }
1369                         need_retouch_dir_perms = 1;
1370                 }
1371 #endif
1372
1373                 if (real_ret != 0 && one_file_system)
1374                         real_sx.st.st_dev = filesystem_dev;
1375                 if (inc_recurse) {
1376                         if (one_file_system) {
1377                                 uint32 *devp = F_DIR_DEV_P(file);
1378                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1379                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1380                         }
1381                 }
1382                 else if (delete_during && f_out != -1 && !phase && dry_run < 2
1383                     && (file->flags & FLAG_CONTENT_DIR))
1384                         delete_in_dir(fname, file, &real_sx.st.st_dev);
1385                 goto cleanup;
1386         }
1387
1388         /* If we're not preserving permissions, change the file-list's
1389          * mode based on the local permissions and some heuristics. */
1390         if (!preserve_perms) {
1391                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1392                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1393                                        exists);
1394         }
1395
1396 #ifdef SUPPORT_HARD_LINKS
1397         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1398          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1399                 goto cleanup;
1400 #endif
1401
1402         if (preserve_links && S_ISLNK(file->mode)) {
1403 #ifdef SUPPORT_LINKS
1404                 const char *sl = F_SYMLINK(file);
1405                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1406                         if (verbose) {
1407                                 if (solo_file)
1408                                         fname = f_name(file, NULL);
1409                                 rprintf(FINFO,
1410                                         "ignoring unsafe symlink %s -> \"%s\"\n",
1411                                         full_fname(fname), sl);
1412                         }
1413                         return;
1414                 }
1415                 if (statret == 0) {
1416                         char lnk[MAXPATHLEN];
1417                         int len;
1418
1419                         if (!S_ISLNK(sx.st.st_mode))
1420                                 statret = -1;
1421                         else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1422                               && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1423                                 /* The link is pointing to the right place. */
1424                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1425                                 if (itemizing)
1426                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1427 #ifdef SUPPORT_HARD_LINKS
1428                                 if (preserve_hard_links && F_IS_HLINKED(file))
1429                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1430 #endif
1431                                 if (remove_source_files == 1)
1432                                         goto return_with_success;
1433                                 goto cleanup;
1434                         }
1435                         /* Not the right symlink (or not a symlink), so
1436                          * delete it. */
1437                         if (delete_item(fname, sx.st.st_mode, "symlink", del_opts) != 0)
1438                                 goto cleanup;
1439                 } else if (basis_dir[0] != NULL) {
1440                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1441                                               itemizing, code);
1442                         if (j == -2) {
1443 #ifndef CAN_HARDLINK_SYMLINK
1444                                 if (link_dest) {
1445                                         /* Resort to --copy-dest behavior. */
1446                                 } else
1447 #endif
1448                                 if (!copy_dest)
1449                                         goto cleanup;
1450                                 itemizing = 0;
1451                                 code = FNONE;
1452                         } else if (j >= 0)
1453                                 statret = 1;
1454                 }
1455 #ifdef SUPPORT_HARD_LINKS
1456                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1457                         cur_flist->in_progress++;
1458                         goto cleanup;
1459                 }
1460 #endif
1461                 if (do_symlink(sl, fname) != 0) {
1462                         rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
1463                                 full_fname(fname), sl);
1464                 } else {
1465                         set_file_attrs(fname, file, NULL, NULL, 0);
1466                         if (itemizing) {
1467                                 itemize(fname, file, ndx, statret, &sx,
1468                                         ITEM_LOCAL_CHANGE, 0, NULL);
1469                         }
1470                         if (code != FNONE && verbose)
1471                                 rprintf(code, "%s -> %s\n", fname, sl);
1472 #ifdef SUPPORT_HARD_LINKS
1473                         if (preserve_hard_links && F_IS_HLINKED(file))
1474                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1475 #endif
1476                         /* This does not check remove_source_files == 1
1477                          * because this is one of the items that the old
1478                          * --remove-sent-files option would remove. */
1479                         if (remove_source_files)
1480                                 goto return_with_success;
1481                 }
1482 #endif
1483                 goto cleanup;
1484         }
1485
1486         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1487          || (preserve_specials && IS_SPECIAL(file->mode))) {
1488                 uint32 *devp = F_RDEV_P(file);
1489                 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1490                 if (statret == 0) {
1491                         char *t;
1492                         if (IS_DEVICE(file->mode)) {
1493                                 if (!IS_DEVICE(sx.st.st_mode))
1494                                         statret = -1;
1495                                 t = "device file";
1496                         } else {
1497                                 if (!IS_SPECIAL(sx.st.st_mode))
1498                                         statret = -1;
1499                                 t = "special file";
1500                         }
1501                         if (statret == 0
1502                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1503                          && sx.st.st_rdev == rdev) {
1504                                 /* The device or special file is identical. */
1505                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1506                                 if (itemizing)
1507                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1508 #ifdef SUPPORT_HARD_LINKS
1509                                 if (preserve_hard_links && F_IS_HLINKED(file))
1510                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1511 #endif
1512                                 if (remove_source_files == 1)
1513                                         goto return_with_success;
1514                                 goto cleanup;
1515                         }
1516                         if (delete_item(fname, sx.st.st_mode, t, del_opts) != 0)
1517                                 goto cleanup;
1518                 } else if (basis_dir[0] != NULL) {
1519                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1520                                               itemizing, code);
1521                         if (j == -2) {
1522 #ifndef CAN_HARDLINK_SPECIAL
1523                                 if (link_dest) {
1524                                         /* Resort to --copy-dest behavior. */
1525                                 } else
1526 #endif
1527                                 if (!copy_dest)
1528                                         goto cleanup;
1529                                 itemizing = 0;
1530                                 code = FNONE;
1531                         } else if (j >= 0)
1532                                 statret = 1;
1533                 }
1534 #ifdef SUPPORT_HARD_LINKS
1535                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1536                         cur_flist->in_progress++;
1537                         goto cleanup;
1538                 }
1539 #endif
1540                 if (verbose > 2) {
1541                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1542                                 fname, (int)file->mode,
1543                                 (long)major(rdev), (long)minor(rdev));
1544                 }
1545                 if (do_mknod(fname, file->mode, rdev) < 0) {
1546                         rsyserr(FERROR, errno, "mknod %s failed",
1547                                 full_fname(fname));
1548                 } else {
1549                         set_file_attrs(fname, file, NULL, NULL, 0);
1550                         if (itemizing) {
1551                                 itemize(fname, file, ndx, statret, &sx,
1552                                         ITEM_LOCAL_CHANGE, 0, NULL);
1553                         }
1554                         if (code != FNONE && verbose)
1555                                 rprintf(code, "%s\n", fname);
1556 #ifdef SUPPORT_HARD_LINKS
1557                         if (preserve_hard_links && F_IS_HLINKED(file))
1558                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1559 #endif
1560                         if (remove_source_files == 1)
1561                                 goto return_with_success;
1562                 }
1563                 goto cleanup;
1564         }
1565
1566         if (!S_ISREG(file->mode)) {
1567                 if (solo_file)
1568                         fname = f_name(file, NULL);
1569                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1570                 goto cleanup;
1571         }
1572
1573         if (max_size > 0 && F_LENGTH(file) > max_size) {
1574                 if (verbose > 1) {
1575                         if (solo_file)
1576                                 fname = f_name(file, NULL);
1577                         rprintf(FINFO, "%s is over max-size\n", fname);
1578                 }
1579                 goto cleanup;
1580         }
1581         if (min_size > 0 && F_LENGTH(file) < min_size) {
1582                 if (verbose > 1) {
1583                         if (solo_file)
1584                                 fname = f_name(file, NULL);
1585                         rprintf(FINFO, "%s is under min-size\n", fname);
1586                 }
1587                 goto cleanup;
1588         }
1589
1590         if (ignore_existing > 0 && statret == 0) {
1591                 if (verbose > 1)
1592                         rprintf(FINFO, "%s exists\n", fname);
1593                 goto cleanup;
1594         }
1595
1596         if (update_only > 0 && statret == 0
1597             && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1598                 if (verbose > 1)
1599                         rprintf(FINFO, "%s is newer\n", fname);
1600                 goto cleanup;
1601         }
1602
1603         fnamecmp = fname;
1604         fnamecmp_type = FNAMECMP_FNAME;
1605
1606         if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1607                 if (delete_item(fname, sx.st.st_mode, "regular file", del_opts) != 0)
1608                         goto cleanup;
1609                 statret = -1;
1610                 stat_errno = ENOENT;
1611         }
1612
1613         if (statret != 0 && basis_dir[0] != NULL) {
1614                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1615                                       itemizing, code);
1616                 if (j == -2) {
1617                         if (remove_source_files == 1)
1618                                 goto return_with_success;
1619                         goto cleanup;
1620                 }
1621                 if (j >= 0) {
1622                         fnamecmp = fnamecmpbuf;
1623                         fnamecmp_type = j;
1624                         statret = 0;
1625                 }
1626         }
1627
1628         real_ret = statret;
1629         real_sx = sx;
1630
1631         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1632             && link_stat(partialptr, &partial_st, 0) == 0
1633             && S_ISREG(partial_st.st_mode)) {
1634                 if (statret != 0)
1635                         goto prepare_to_open;
1636         } else
1637                 partialptr = NULL;
1638
1639         if (statret != 0 && fuzzy_dirlist && dry_run <= 1) {
1640                 int j = find_fuzzy(file, fuzzy_dirlist);
1641                 if (j >= 0) {
1642                         fuzzy_file = fuzzy_dirlist->files[j];
1643                         f_name(fuzzy_file, fnamecmpbuf);
1644                         if (verbose > 2) {
1645                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1646                                         fname, fnamecmpbuf);
1647                         }
1648                         sx.st.st_size = F_LENGTH(fuzzy_file);
1649                         statret = 0;
1650                         fnamecmp = fnamecmpbuf;
1651                         fnamecmp_type = FNAMECMP_FUZZY;
1652                 }
1653         }
1654
1655         if (statret != 0) {
1656 #ifdef SUPPORT_HARD_LINKS
1657                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1658                         cur_flist->in_progress++;
1659                         goto cleanup;
1660                 }
1661 #endif
1662                 if (stat_errno == ENOENT)
1663                         goto notify_others;
1664                 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1665                         full_fname(fname));
1666                 goto cleanup;
1667         }
1668
1669         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file))
1670                 goto cleanup;
1671
1672         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1673                 ;
1674         else if (fnamecmp_type == FNAMECMP_FUZZY)
1675                 ;
1676         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1677                 if (partialptr) {
1678                         do_unlink(partialptr);
1679                         handle_partial_dir(partialptr, PDIR_DELETE);
1680                 }
1681                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1682                 if (itemizing)
1683                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1684 #ifdef SUPPORT_HARD_LINKS
1685                 if (preserve_hard_links && F_IS_HLINKED(file))
1686                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1687 #endif
1688                 if (remove_source_files != 1)
1689                         goto cleanup;
1690           return_with_success:
1691                 if (!dry_run)
1692                         send_msg_int(MSG_SUCCESS, ndx);
1693                 goto cleanup;
1694         }
1695
1696   prepare_to_open:
1697         if (partialptr) {
1698                 sx.st = partial_st;
1699                 fnamecmp = partialptr;
1700                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1701                 statret = 0;
1702         }
1703
1704         if (!do_xfers)
1705                 goto notify_others;
1706
1707         if (read_batch || whole_file) {
1708                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1709                         if (!(backupptr = get_backup_name(fname)))
1710                                 goto cleanup;
1711                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1712                                 goto pretend_missing;
1713                         if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1714                                 unmake_file(back_file);
1715                                 back_file = NULL;
1716                                 goto cleanup;
1717                         }
1718                 }
1719                 goto notify_others;
1720         }
1721
1722         if (fuzzy_dirlist) {
1723                 int j = flist_find(fuzzy_dirlist, file);
1724                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1725                         fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1726         }
1727
1728         /* open the file */
1729         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1730                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1731                         full_fname(fnamecmp));
1732           pretend_missing:
1733                 /* pretend the file didn't exist */
1734 #ifdef SUPPORT_HARD_LINKS
1735                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1736                         cur_flist->in_progress++;
1737                         goto cleanup;
1738                 }
1739 #endif
1740                 statret = real_ret = -1;
1741                 goto notify_others;
1742         }
1743
1744         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1745                 if (!(backupptr = get_backup_name(fname))) {
1746                         close(fd);
1747                         goto cleanup;
1748                 }
1749                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1750                         close(fd);
1751                         goto pretend_missing;
1752                 }
1753                 if (robust_unlink(backupptr) && errno != ENOENT) {
1754                         rsyserr(FERROR, errno, "unlink %s",
1755                                 full_fname(backupptr));
1756                         unmake_file(back_file);
1757                         back_file = NULL;
1758                         close(fd);
1759                         goto cleanup;
1760                 }
1761                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0
1762                  && (errno != ENOENT || make_bak_dir(backupptr) < 0
1763                   || (f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)) {
1764                         rsyserr(FERROR, errno, "open %s",
1765                                 full_fname(backupptr));
1766                         unmake_file(back_file);
1767                         back_file = NULL;
1768                         close(fd);
1769                         goto cleanup;
1770                 }
1771                 fnamecmp_type = FNAMECMP_BACKUP;
1772         }
1773
1774         if (verbose > 3) {
1775                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1776                         fnamecmp, (double)sx.st.st_size);
1777         }
1778
1779         if (verbose > 2)
1780                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1781
1782   notify_others:
1783         if (remove_source_files && !delay_updates && !phase)
1784                 increment_active_files(ndx, itemizing, code);
1785         if (inc_recurse && !dry_run)
1786                 cur_flist->in_progress++;
1787 #ifdef SUPPORT_HARD_LINKS
1788         if (preserve_hard_links && F_IS_HLINKED(file))
1789                 file->flags |= FLAG_FILE_SENT;
1790 #endif
1791         write_ndx(f_out, ndx);
1792         if (itemizing) {
1793                 int iflags = ITEM_TRANSFER;
1794                 if (always_checksum > 0)
1795                         iflags |= ITEM_REPORT_CHECKSUM;
1796                 if (fnamecmp_type != FNAMECMP_FNAME)
1797                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1798                 if (fnamecmp_type == FNAMECMP_FUZZY)
1799                         iflags |= ITEM_XNAME_FOLLOWS;
1800                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1801                         fuzzy_file ? fuzzy_file->basename : NULL);
1802 #ifdef SUPPORT_ACLS
1803                 if (preserve_acls)
1804                         free_acl(&real_sx);
1805 #endif
1806 #ifdef SUPPORT_XATTRS
1807                 if (preserve_xattrs)
1808                         free_xattr(&real_sx);
1809 #endif
1810         }
1811
1812         if (!do_xfers) {
1813 #ifdef SUPPORT_HARD_LINKS
1814                 if (preserve_hard_links && F_IS_HLINKED(file))
1815                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1816 #endif
1817                 goto cleanup;
1818         }
1819         if (read_batch)
1820                 goto cleanup;
1821
1822         if (statret != 0 || whole_file)
1823                 write_sum_head(f_out, NULL);
1824         else {
1825                 generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy);
1826                 close(fd);
1827         }
1828
1829   cleanup:
1830         if (back_file) {
1831                 if (f_copy >= 0)
1832                         close(f_copy);
1833                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1834                 if (verbose > 1) {
1835                         rprintf(FINFO, "backed up %s to %s\n",
1836                                 fname, backupptr);
1837                 }
1838                 unmake_file(back_file);
1839         }
1840
1841 #ifdef SUPPORT_ACLS
1842         if (preserve_acls)
1843                 free_acl(&sx);
1844 #endif
1845 #ifdef SUPPORT_XATTRS
1846         if (preserve_xattrs)
1847                 free_xattr(&sx);
1848 #endif
1849         return;
1850 }
1851
1852 static void touch_up_dirs(struct file_list *flist, int ndx)
1853 {
1854         static int counter = 0;
1855         struct file_struct *file;
1856         char *fname;
1857         int i, start, end;
1858
1859         if (ndx < 0) {
1860                 start = 0;
1861                 end = flist->used - 1;
1862         } else
1863                 start = end = ndx;
1864
1865         /* Fix any directory permissions that were modified during the
1866          * transfer and/or re-set any tweaked modified-time values. */
1867         for (i = start; i <= end; i++, counter++) {
1868                 file = flist->files[i];
1869                 if (!S_ISDIR(file->mode)
1870                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1871                         continue;
1872                 if (verbose > 3) {
1873                         fname = f_name(file, NULL);
1874                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
1875                                 NS(fname), i);
1876                 }
1877                 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
1878                  || (!need_retouch_dir_times && file->mode & S_IWUSR))
1879                         continue;
1880                 fname = f_name(file, NULL);
1881                 if (!(file->mode & S_IWUSR))
1882                         do_chmod(fname, file->mode);
1883                 if (need_retouch_dir_times)
1884                         set_modtime(fname, file->modtime, file->mode);
1885                 if (allowed_lull && !(counter % lull_mod))
1886                         maybe_send_keepalive();
1887                 else if (!(counter & 0xFF))
1888                         maybe_flush_socket(0);
1889         }
1890 }
1891
1892 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
1893 {
1894         struct file_struct *file;
1895         struct file_list *flist;
1896         char fbuf[MAXPATHLEN];
1897         int ndx;
1898
1899 #ifdef SUPPORT_HARD_LINKS
1900         while (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
1901                 flist = flist_for_ndx(ndx);
1902                 assert(flist != NULL);
1903                 file = flist->files[ndx - flist->ndx_start];
1904                 assert(file->flags & FLAG_HLINKED);
1905                 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
1906                 flist->in_progress--;
1907         }
1908 #endif
1909
1910         while (check_redo && (ndx = get_redo_num()) != -1) {
1911                 csum_length = SUM_LENGTH;
1912                 max_size = -max_size;
1913                 min_size = -min_size;
1914                 ignore_existing = -ignore_existing;
1915                 ignore_non_existing = -ignore_non_existing;
1916                 update_only = -update_only;
1917                 always_checksum = -always_checksum;
1918                 size_only = -size_only;
1919                 append_mode = -append_mode;
1920                 make_backups = -make_backups; /* avoid dup backup w/inplace */
1921                 ignore_times++;
1922
1923                 flist = cur_flist;
1924                 cur_flist = flist_for_ndx(ndx);
1925
1926                 file = cur_flist->files[ndx - cur_flist->ndx_start];
1927                 if (solo_file)
1928                         strlcpy(fbuf, solo_file, sizeof fbuf);
1929                 else
1930                         f_name(file, fbuf);
1931                 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
1932                 cur_flist->to_redo--;
1933
1934                 cur_flist = flist;
1935
1936                 csum_length = SHORT_SUM_LENGTH;
1937                 max_size = -max_size;
1938                 min_size = -min_size;
1939                 ignore_existing = -ignore_existing;
1940                 ignore_non_existing = -ignore_non_existing;
1941                 update_only = -update_only;
1942                 always_checksum = -always_checksum;
1943                 size_only = -size_only;
1944                 append_mode = -append_mode;
1945                 make_backups = -make_backups;
1946                 ignore_times--;
1947         }
1948
1949         while (cur_flist != first_flist) { /* only possible with inc_recurse */
1950                 if (first_flist->in_progress || first_flist->to_redo)
1951                         break;
1952
1953                 if (!read_batch) {
1954                         write_ndx(sock_f_out, NDX_DONE);
1955                         maybe_flush_socket(1);
1956                 }
1957
1958                 if (delete_during == 2 || !dir_tweaking) {
1959                         /* Skip directory touch-up. */
1960                 } else if (first_flist->parent_ndx >= 0)
1961                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
1962
1963                 flist_free(first_flist); /* updates first_flist */
1964         }
1965 }
1966
1967 void generate_files(int f_out, const char *local_name)
1968 {
1969         int i, ndx;
1970         char fbuf[MAXPATHLEN];
1971         int itemizing;
1972         enum logcode code;
1973         int save_do_progress = do_progress;
1974
1975         if (protocol_version >= 29) {
1976                 itemizing = 1;
1977                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1978                 code = logfile_format_has_i ? FNONE : FLOG;
1979         } else if (am_daemon) {
1980                 itemizing = logfile_format_has_i && do_xfers;
1981                 maybe_ATTRS_REPORT = ATTRS_REPORT;
1982                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1983         } else if (!am_server) {
1984                 itemizing = stdout_format_has_i;
1985                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1986                 code = itemizing ? FNONE : FINFO;
1987         } else {
1988                 itemizing = 0;
1989                 maybe_ATTRS_REPORT = ATTRS_REPORT;
1990                 code = FINFO;
1991         }
1992         solo_file = local_name;
1993         dir_tweaking = !(list_only || solo_file || dry_run);
1994         need_retouch_dir_times = preserve_times > 1;
1995         lull_mod = allowed_lull * 5;
1996
1997         if (verbose > 2)
1998                 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
1999
2000         if (delete_before && !solo_file && cur_flist->used > 0)
2001                 do_delete_pass();
2002         if (delete_during == 2) {
2003                 deldelay_size = BIGPATHBUFLEN * 4;
2004                 deldelay_buf = new_array(char, deldelay_size);
2005                 if (!deldelay_buf)
2006                         out_of_memory("delete-delay");
2007         }
2008         do_progress = 0;
2009
2010         if (append_mode > 0 || whole_file < 0)
2011                 whole_file = 0;
2012         if (verbose >= 2) {
2013                 rprintf(FINFO, "delta-transmission %s\n",
2014                         whole_file
2015                         ? "disabled for local transfer or --whole-file"
2016                         : "enabled");
2017         }
2018
2019         /* Since we often fill up the outgoing socket and then just sit around
2020          * waiting for the other 2 processes to do their thing, we don't want
2021          * to exit on a timeout.  If the data stops flowing, the receiver will
2022          * notice that and let us know via the redo pipe (or its closing). */
2023         ignore_timeout = 1;
2024
2025         dflt_perms = (ACCESSPERMS & ~orig_umask);
2026
2027         do {
2028 #ifdef SUPPORT_HARD_LINKS
2029                 if (preserve_hard_links && inc_recurse) {
2030                         while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2031                                 wait_for_receiver();
2032                 }
2033 #endif
2034
2035                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2036                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2037                         f_name(fp, fbuf);
2038                         ndx = cur_flist->ndx_start - 1;
2039                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2040                         if (delete_during && dry_run < 2) {
2041                                 if (BITS_SETnUNSET(fp->flags, FLAG_CONTENT_DIR, FLAG_MISSING_DIR)) {
2042                                         dev_t dirdev;
2043                                         if (one_file_system) {
2044                                                 uint32 *devp = F_DIR_DEV_P(fp);
2045                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2046                                         } else
2047                                                 dirdev = MAKEDEV(0, 0);
2048                                         delete_in_dir(f_name(fp, fbuf), fp, &dirdev);
2049                                 }
2050                         }
2051                 }
2052                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2053                         struct file_struct *file = cur_flist->sorted[i];
2054
2055                         if (!F_IS_ACTIVE(file))
2056                                 continue;
2057
2058 #ifdef ICONV_OPTION
2059                         if (ic_ndx)
2060                                 ndx = F_NDX(file);
2061                         else
2062 #endif
2063                                 ndx = i + cur_flist->ndx_start;
2064
2065                         if (solo_file)
2066                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2067                         else
2068                                 f_name(file, fbuf);
2069                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2070
2071                         check_for_finished_files(itemizing, code, 0);
2072
2073                         if (allowed_lull && !(i % lull_mod))
2074                                 maybe_send_keepalive();
2075                         else if (!(i & 0xFF))
2076                                 maybe_flush_socket(0);
2077                 }
2078
2079                 if (!inc_recurse) {
2080                         write_ndx(f_out, NDX_DONE);
2081                         break;
2082                 }
2083
2084                 while (1) {
2085                         check_for_finished_files(itemizing, code, 1);
2086                         if (cur_flist->next || flist_eof)
2087                                 break;
2088                         wait_for_receiver();
2089                 }
2090         } while ((cur_flist = cur_flist->next) != NULL);
2091
2092         if (delete_during)
2093                 delete_in_dir(NULL, NULL, &dev_zero);
2094         phase++;
2095         if (verbose > 2)
2096                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2097
2098         while (1) {
2099                 check_for_finished_files(itemizing, code, 1);
2100                 if (msgdone_cnt)
2101                         break;
2102                 wait_for_receiver();
2103         }
2104
2105         phase++;
2106         if (verbose > 2)
2107                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2108
2109         write_ndx(f_out, NDX_DONE);
2110         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2111         if (protocol_version >= 29 && !delay_updates)
2112                 write_ndx(f_out, NDX_DONE);
2113
2114         /* Read MSG_DONE for the redo phase (and any prior messages). */
2115         while (1) {
2116                 check_for_finished_files(itemizing, code, 0);
2117                 if (msgdone_cnt > 1)
2118                         break;
2119                 wait_for_receiver();
2120         }
2121
2122         if (protocol_version >= 29) {
2123                 phase++;
2124                 if (verbose > 2)
2125                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2126                 if (delay_updates)
2127                         write_ndx(f_out, NDX_DONE);
2128                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2129                 while (msgdone_cnt == 2)
2130                         wait_for_receiver();
2131         }
2132
2133         do_progress = save_do_progress;
2134         if (delete_during == 2)
2135                 do_delayed_deletions(fbuf);
2136         if (delete_after && !solo_file && file_total > 0)
2137                 do_delete_pass();
2138
2139         if ((need_retouch_dir_perms || need_retouch_dir_times)
2140          && dir_tweaking && (!inc_recurse || delete_during == 2))
2141                 touch_up_dirs(dir_flist, -1);
2142
2143         if (max_delete >= 0 && deletion_count > max_delete) {
2144                 rprintf(FINFO,
2145                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2146                         deletion_count - max_delete);
2147                 io_error |= IOERR_DEL_LIMIT;
2148         }
2149
2150         if (verbose > 2)
2151                 rprintf(FINFO, "generate_files finished\n");
2152 }