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 #ifndef HAVE_LUTIMES
 521         if (S_ISLNK(file->mode)) {
 522                 ;
 523         } else
 524 #endif
 525         if (preserve_times && cmp_time(sxp->st.st_mtime, file->modtime) != 0)
 526                 return 0;
 527
 528         if (preserve_perms && !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 529                 return 0;
 530
 531         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 532                 return 0;
 533
 534         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 535                 return 0;
 536
 537 #ifdef SUPPORT_ACLS
 538         if (preserve_acls && !S_ISLNK(file->mode)) {
 539                 if (!ACL_READY(*sxp))
 540                         get_acl(fname, sxp);
 541                 if (set_acl(NULL, file, sxp) == 0)
 542                         return 0;
 543         }
 544 #endif
 545 #ifdef SUPPORT_XATTRS
 546         if (preserve_xattrs) {
 547                 if (!XATTR_READY(*sxp))
 548                         get_xattr(fname, sxp);
 549                 if (xattr_diff(file, sxp, 0))
 550                         return 0;
 551         }
 552 #endif
 553
 554         return 1;
 555 }
 556
 557 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 558              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 559              const char *xname)
 560 {
 561         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 562                 int keep_time = !preserve_times ? 0
 563                     : S_ISDIR(file->mode) ? preserve_times > 1
 564                     : !S_ISLNK(file->mode);
 565
 566                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 567                         iflags |= ITEM_REPORT_SIZE;
 568                 if ((iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !keep_time
 569                   && !(iflags & ITEM_MATCHED)
 570                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 571                  || (keep_time && cmp_time(file->modtime, sxp->st.st_mtime) != 0))
 572                         iflags |= ITEM_REPORT_TIME;
 573 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 574                 if (S_ISLNK(file->mode)) {
 575                         ;
 576                 } else
 577 #endif
 578                 if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 579                         iflags |= ITEM_REPORT_PERMS;
 580                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 581                         iflags |= ITEM_REPORT_OWNER;
 582                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 583                     && sxp->st.st_gid != (gid_t)F_GROUP(file))
 584                         iflags |= ITEM_REPORT_GROUP;
 585 #ifdef SUPPORT_ACLS
 586                 if (preserve_acls && !S_ISLNK(file->mode)) {
 587                         if (!ACL_READY(*sxp))
 588                                 get_acl(fnamecmp, sxp);
 589                         if (set_acl(NULL, file, sxp) == 0)
 590                                 iflags |= ITEM_REPORT_ACL;
 591                 }
 592 #endif
 593 #ifdef SUPPORT_XATTRS
 594                 if (preserve_xattrs) {
 595                         if (!XATTR_READY(*sxp))
 596                                 get_xattr(fnamecmp, sxp);
 597                         if (xattr_diff(file, sxp, 1))
 598                                 iflags |= ITEM_REPORT_XATTR;
 599                 }
 600 #endif
 601         } else {
 602 #ifdef SUPPORT_XATTRS
 603                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 604                         iflags |= ITEM_REPORT_XATTR;
 605 #endif
 606                 iflags |= ITEM_IS_NEW;
 607         }
 608
 609         iflags &= 0xffff;
 610         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || verbose > 1
 611           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 612                 if (protocol_version >= 29) {
 613                         if (ndx >= 0)
 614                                 write_ndx(sock_f_out, ndx);
 615                         write_shortint(sock_f_out, iflags);
 616                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 617                                 write_byte(sock_f_out, fnamecmp_type);
 618                         if (iflags & ITEM_XNAME_FOLLOWS)
 619                                 write_vstring(sock_f_out, xname, strlen(xname));
 620 #ifdef SUPPORT_XATTRS
 621                         if (iflags & ITEM_REPORT_XATTR && !dry_run)
 622                                 send_xattr_request(NULL, file, sock_f_out);
 623 #endif
 624                 } else if (ndx >= 0) {
 625                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 626                         log_item(code, file, &stats, iflags, xname);
 627                 }
 628         }
 629 }
 630
 631
 632 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 633 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 634 {
 635         if (st->st_size != F_LENGTH(file))
 636                 return 0;
 637
 638         /* if always checksum is set then we use the checksum instead
 639            of the file time to determine whether to sync */
 640         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 641                 char sum[MAX_DIGEST_LEN];
 642                 file_checksum(fn, sum, st->st_size);
 643                 return memcmp(sum, F_SUM(file), checksum_len) == 0;
 644         }
 645
 646         if (size_only > 0)
 647                 return 1;
 648
 649         if (ignore_times)
 650                 return 0;
 651
 652         return cmp_time(st->st_mtime, file->modtime) == 0;
 653 }
 654
 655
 656 /*
 657  * set (initialize) the size entries in the per-file sum_struct
 658  * calculating dynamic block and checksum sizes.
 659  *
 660  * This is only called from generate_and_send_sums() but is a separate
 661  * function to encapsulate the logic.
 662  *
 663  * The block size is a rounded square root of file length.
 664  *
 665  * The checksum size is determined according to:
 666  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 667  * provided by Donovan Baarda which gives a probability of rsync
 668  * algorithm corrupting data and falling back using the whole md4
 669  * checksums.
 670  *
 671  * This might be made one of several selectable heuristics.
 672  */
 673 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 674 {
 675         int32 blength;
 676         int s2length;
 677
 678         if (block_size)
 679                 blength = block_size;
 680         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 681                 blength = BLOCK_SIZE;
 682         else {
 683                 int32 c;
 684                 int64 l;
 685                 int cnt;
 686                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 687                 if (cnt >= 31 || c >= MAX_BLOCK_SIZE)
 688                         blength = MAX_BLOCK_SIZE;
 689                 else {
 690                     blength = 0;
 691                     do {
 692                             blength |= c;
 693                             if (len < (int64)blength * blength)
 694                                     blength &= ~c;
 695                             c >>= 1;
 696                     } while (c >= 8);   /* round to multiple of 8 */
 697                     blength = MAX(blength, BLOCK_SIZE);
 698                 }
 699         }
 700
 701         if (protocol_version < 27) {
 702                 s2length = csum_length;
 703         } else if (csum_length == SUM_LENGTH) {
 704                 s2length = SUM_LENGTH;
 705         } else {
 706                 int32 c;
 707                 int64 l;
 708                 int b = BLOCKSUM_BIAS;
 709                 for (l = len; l >>= 1; b += 2) {}
 710                 for (c = blength; (c >>= 1) && b; b--) {}
 711                 /* add a bit, subtract rollsum, round up. */
 712                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 713                 s2length = MAX(s2length, csum_length);
 714                 s2length = MIN(s2length, SUM_LENGTH);
 715         }
 716
 717         sum->flength    = len;
 718         sum->blength    = blength;
 719         sum->s2length   = s2length;
 720         sum->remainder  = (int32)(len % blength);
 721         sum->count      = (int32)(len / blength) + (sum->remainder != 0);
 722
 723         if (sum->count && verbose > 2) {
 724                 rprintf(FINFO,
 725                         "count=%.0f rem=%ld blength=%ld s2length=%d flength=%.0f\n",
 726                         (double)sum->count, (long)sum->remainder, (long)sum->blength,
 727                         sum->s2length, (double)sum->flength);
 728         }
 729 }
 730
 731
 732 /*
 733  * Generate and send a stream of signatures/checksums that describe a buffer
 734  *
 735  * Generate approximately one checksum every block_len bytes.
 736  */
 737 static void generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 738 {
 739         int32 i;
 740         struct map_struct *mapbuf;
 741         struct sum_struct sum;
 742         OFF_T offset = 0;
 743
 744         sum_sizes_sqroot(&sum, len);
 745         write_sum_head(f_out, &sum);
 746
 747         if (append_mode > 0 && f_copy < 0)
 748                 return;
 749
 750         if (len > 0)
 751                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 752         else
 753                 mapbuf = NULL;
 754
 755         for (i = 0; i < sum.count; i++) {
 756                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 757                 char *map = map_ptr(mapbuf, offset, n1);
 758                 char sum2[SUM_LENGTH];
 759                 uint32 sum1;
 760
 761                 len -= n1;
 762                 offset += n1;
 763
 764                 if (f_copy >= 0) {
 765                         full_write(f_copy, map, n1);
 766                         if (append_mode > 0)
 767                                 continue;
 768                 }
 769
 770                 sum1 = get_checksum1(map, n1);
 771                 get_checksum2(map, n1, sum2);
 772
 773                 if (verbose > 3) {
 774                         rprintf(FINFO,
 775                                 "chunk[%.0f] offset=%.0f len=%ld sum1=%08lx\n",
 776                                 (double)i, (double)offset - n1, (long)n1,
 777                                 (unsigned long)sum1);
 778                 }
 779                 write_int(f_out, sum1);
 780                 write_buf(f_out, sum2, sum.s2length);
 781         }
 782
 783         if (mapbuf)
 784                 unmap_file(mapbuf);
 785 }
 786
 787
 788 /* Try to find a filename in the same dir as "fname" with a similar name. */
 789 static int find_fuzzy(struct file_struct *file, struct file_list *dirlist)
 790 {
 791         int fname_len, fname_suf_len;
 792         const char *fname_suf, *fname = file->basename;
 793         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 794         int j, lowest_j = -1;
 795
 796         fname_len = strlen(fname);
 797         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 798
 799         for (j = 0; j < dirlist->used; j++) {
 800                 struct file_struct *fp = dirlist->files[j];
 801                 const char *suf, *name;
 802                 int len, suf_len;
 803                 uint32 dist;
 804
 805                 if (!S_ISREG(fp->mode) || !F_LENGTH(fp)
 806                  || fp->flags & FLAG_FILE_SENT)
 807                         continue;
 808
 809                 name = fp->basename;
 810
 811                 if (F_LENGTH(fp) == F_LENGTH(file)
 812                     && cmp_time(fp->modtime, file->modtime) == 0) {
 813                         if (verbose > 4) {
 814                                 rprintf(FINFO,
 815                                         "fuzzy size/modtime match for %s\n",
 816                                         name);
 817                         }
 818                         return j;
 819                 }
 820
 821                 len = strlen(name);
 822                 suf = find_filename_suffix(name, len, &suf_len);
 823
 824                 dist = fuzzy_distance(name, len, fname, fname_len);
 825                 /* Add some extra weight to how well the suffixes match. */
 826                 dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len)
 827                       * 10;
 828                 if (verbose > 4) {
 829                         rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 830                                 name, (int)(dist>>16), (int)(dist&0xFFFF));
 831                 }
 832                 if (dist <= lowest_dist) {
 833                         lowest_dist = dist;
 834                         lowest_j = j;
 835                 }
 836         }
 837
 838         return lowest_j;
 839 }
 840
 841 /* Copy a file found in our --copy-dest handling. */
 842 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 843 {
 844         char buf[MAXPATHLEN];
 845         const char *copy_to, *partialptr;
 846         int fd_w;
 847
 848         if (inplace) {
 849                 /* Let copy_file open the destination in place. */
 850                 fd_w = -1;
 851                 copy_to = dest;
 852         } else {
 853                 fd_w = open_tmpfile(buf, dest, file);
 854                 if (fd_w < 0)
 855                         return -1;
 856                 copy_to = buf;
 857         }
 858         cleanup_set(copy_to, NULL, NULL, -1, -1);
 859         if (copy_file(src, copy_to, fd_w, file->mode, 0) < 0) {
 860                 if (verbose) {
 861                         rsyserr(FINFO, errno, "copy_file %s => %s",
 862                                 full_fname(src), copy_to);
 863                 }
 864                 /* Try to clean up. */
 865                 unlink(copy_to);
 866                 cleanup_disable();
 867                 return -1;
 868         }
 869         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 870         if (partialptr && *partialptr == '/')
 871                 partialptr = NULL;
 872         finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 873         cleanup_disable();
 874         return 0;
 875 }
 876
 877 /* This is only called for regular files.  We return -2 if we've finished
 878  * handling the file, -1 if no dest-linking occurred, or a non-negative
 879  * value if we found an alternate basis file. */
 880 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 881                          char *cmpbuf, stat_x *sxp, int itemizing,
 882                          enum logcode code)
 883 {
 884         int best_match = -1;
 885         int match_level = 0;
 886         int j = 0;
 887
 888         do {
 889                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 890                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 891                         continue;
 892                 switch (match_level) {
 893                 case 0:
 894                         best_match = j;
 895                         match_level = 1;
 896                         /* FALL THROUGH */
 897                 case 1:
 898                         if (!unchanged_file(cmpbuf, file, &sxp->st))
 899                                 continue;
 900                         best_match = j;
 901                         match_level = 2;
 902                         /* FALL THROUGH */
 903                 case 2:
 904                         if (!unchanged_attrs(cmpbuf, file, sxp))
 905                                 continue;
 906                         best_match = j;
 907                         match_level = 3;
 908                         break;
 909                 }
 910                 break;
 911         } while (basis_dir[++j] != NULL);
 912
 913         if (!match_level)
 914                 return -1;
 915
 916         if (j != best_match) {
 917                 j = best_match;
 918                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 919                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
 920                         return -1;
 921         }
 922
 923         if (match_level == 3 && !copy_dest) {
 924 #ifdef SUPPORT_HARD_LINKS
 925                 if (link_dest) {
 926                         if (!hard_link_one(file, fname, cmpbuf, 1))
 927                                 goto try_a_copy;
 928                         if (preserve_hard_links && F_IS_HLINKED(file))
 929                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
 930                         if (itemizing && (verbose > 1 || stdout_format_has_i > 1)) {
 931                                 itemize(cmpbuf, file, ndx, 1, sxp,
 932                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 933                                         0, "");
 934                         }
 935                 } else
 936 #endif
 937                 if (itemizing)
 938                         itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
 939                 if (verbose > 1 && maybe_ATTRS_REPORT)
 940                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 941                 return -2;
 942         }
 943
 944         if (match_level >= 2) {
 945 #ifdef SUPPORT_HARD_LINKS
 946           try_a_copy: /* Copy the file locally. */
 947 #endif
 948                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0)
 949                         return -1;
 950                 if (itemizing)
 951                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
 952 #ifdef SUPPORT_XATTRS
 953                 if (preserve_xattrs)
 954                         xattr_clear_locals(file);
 955 #endif
 956                 if (maybe_ATTRS_REPORT
 957                  && ((!itemizing && verbose && match_level == 2)
 958                   || (verbose > 1 && match_level == 3))) {
 959                         code = match_level == 3 ? FCLIENT : FINFO;
 960                         rprintf(code, "%s%s\n", fname,
 961                                 match_level == 3 ? " is uptodate" : "");
 962                 }
 963 #ifdef SUPPORT_HARD_LINKS
 964                 if (preserve_hard_links && F_IS_HLINKED(file))
 965                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
 966 #endif
 967                 return -2;
 968         }
 969
 970         return FNAMECMP_BASIS_DIR_LOW + j;
 971 }
 972
 973 /* This is only called for non-regular files.  We return -2 if we've finished
 974  * handling the file, or -1 if no dest-linking occurred, or a non-negative
 975  * value if we found an alternate basis file. */
 976 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 977                          char *cmpbuf, stat_x *sxp, int itemizing,
 978                          enum logcode code)
 979 {
 980         char lnk[MAXPATHLEN];
 981         int best_match = -1;
 982         int match_level = 0;
 983         enum nonregtype type;
 984         uint32 *devp;
 985         int len, j = 0;
 986
 987 #ifndef SUPPORT_LINKS
 988         if (S_ISLNK(file->mode))
 989                 return -1;
 990 #endif
 991         if (S_ISDIR(file->mode)) {
 992                 type = TYPE_DIR;
 993         } else if (IS_SPECIAL(file->mode))
 994                 type = TYPE_SPECIAL;
 995         else if (IS_DEVICE(file->mode))
 996                 type = TYPE_DEVICE;
 997 #ifdef SUPPORT_LINKS
 998         else if (S_ISLNK(file->mode))
 999                 type = TYPE_SYMLINK;
1000 #endif
1001         else {
1002                 rprintf(FERROR,
1003                         "internal: try_dests_non() called with invalid mode (%o)\n",
1004                         (int)file->mode);
1005                 exit_cleanup(RERR_UNSUPPORTED);
1006         }
1007
1008         do {
1009                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1010                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1011                         continue;
1012                 switch (type) {
1013                 case TYPE_DIR:
1014                         if (!S_ISDIR(sxp->st.st_mode))
1015                                 continue;
1016                         break;
1017                 case TYPE_SPECIAL:
1018                         if (!IS_SPECIAL(sxp->st.st_mode))
1019                                 continue;
1020                         break;
1021                 case TYPE_DEVICE:
1022                         if (!IS_DEVICE(sxp->st.st_mode))
1023                                 continue;
1024                         break;
1025 #ifdef SUPPORT_LINKS
1026                 case TYPE_SYMLINK:
1027                         if (!S_ISLNK(sxp->st.st_mode))
1028                                 continue;
1029                         break;
1030 #endif
1031                 }
1032                 if (match_level < 1) {
1033                         match_level = 1;
1034                         best_match = j;
1035                 }
1036                 switch (type) {
1037                 case TYPE_DIR:
1038                         break;
1039                 case TYPE_SPECIAL:
1040                 case TYPE_DEVICE:
1041                         devp = F_RDEV_P(file);
1042                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1043                                 continue;
1044                         break;
1045 #ifdef SUPPORT_LINKS
1046                 case TYPE_SYMLINK:
1047                         if ((len = readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1048                                 continue;
1049                         lnk[len] = '\0';
1050                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1051                                 continue;
1052                         break;
1053 #endif
1054                 }
1055                 if (match_level < 2) {
1056                         match_level = 2;
1057                         best_match = j;
1058                 }
1059                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1060                         match_level = 3;
1061                         best_match = j;
1062                         break;
1063                 }
1064         } while (basis_dir[++j] != NULL);
1065
1066         if (!match_level)
1067                 return -1;
1068
1069         if (j != best_match) {
1070                 j = best_match;
1071                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1072                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1073                         return -1;
1074         }
1075
1076         if (match_level == 3) {
1077 #ifdef SUPPORT_HARD_LINKS
1078                 if (link_dest
1079 #ifndef CAN_HARDLINK_SYMLINK
1080                  && !S_ISLNK(file->mode)
1081 #endif
1082 #ifndef CAN_HARDLINK_SPECIAL
1083                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1084 #endif
1085                  && !S_ISDIR(file->mode)) {
1086                         if (do_link(cmpbuf, fname) < 0) {
1087                                 rsyserr(FERROR, errno,
1088                                         "failed to hard-link %s with %s",
1089                                         cmpbuf, fname);
1090                                 return j;
1091                         }
1092                         if (preserve_hard_links && F_IS_HLINKED(file))
1093                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1094                 } else
1095 #endif
1096                         match_level = 2;
1097                 if (itemizing && stdout_format_has_i
1098                  && (verbose > 1 || stdout_format_has_i > 1)) {
1099                         int chg = compare_dest && type != TYPE_DIR ? 0
1100                             : ITEM_LOCAL_CHANGE
1101                              + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1102                         char *lp = match_level == 3 ? "" : NULL;
1103                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1104                 }
1105                 if (verbose > 1 && maybe_ATTRS_REPORT) {
1106                         rprintf(FCLIENT, "%s%s is uptodate\n",
1107                                 fname, type == TYPE_DIR ? "/" : "");
1108                 }
1109                 return -2;
1110         }
1111
1112         return j;
1113 }
1114
1115 static void list_file_entry(struct file_struct *f)
1116 {
1117         char permbuf[PERMSTRING_SIZE];
1118         double len;
1119
1120         if (!F_IS_ACTIVE(f)) {
1121                 /* this can happen if duplicate names were removed */
1122                 return;
1123         }
1124
1125         permstring(permbuf, f->mode);
1126         len = F_LENGTH(f);
1127
1128         /* TODO: indicate '+' if the entry has an ACL. */
1129
1130 #ifdef SUPPORT_LINKS
1131         if (preserve_links && S_ISLNK(f->mode)) {
1132                 rprintf(FINFO, "%s %11.0f %s %s -> %s\n",
1133                         permbuf, len, timestring(f->modtime),
1134                         f_name(f, NULL), F_SYMLINK(f));
1135         } else
1136 #endif
1137         {
1138                 rprintf(FINFO, "%s %11.0f %s %s\n",
1139                         permbuf, len, timestring(f->modtime),
1140                         f_name(f, NULL));
1141         }
1142 }
1143
1144 static int phase = 0;
1145 static int dflt_perms;
1146
1147 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1148  * make sure it exists, and has the right permissions/timestamp info.  For
1149  * all other non-regular files (symlinks, etc.) we create them here.  For
1150  * regular files that have changed, we try to find a basis file and then
1151  * start sending checksums.  The ndx is the file's unique index value.
1152  *
1153  * When fname is non-null, it must point to a MAXPATHLEN buffer!
1154  *
1155  * Note that f_out is set to -1 when doing final directory-permission and
1156  * modification-time repair. */
1157 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1158                            int itemizing, enum logcode code, int f_out)
1159 {
1160         static int missing_below = -1, excluded_below = -1;
1161         static const char *parent_dirname = "";
1162         static struct file_struct *missing_dir = NULL, *excluded_dir = NULL;
1163         static struct file_list *fuzzy_dirlist = NULL;
1164         static int need_fuzzy_dirlist = 0;
1165         struct file_struct *fuzzy_file = NULL;
1166         int fd = -1, f_copy = -1;
1167         stat_x sx, real_sx;
1168         STRUCT_STAT partial_st;
1169         struct file_struct *back_file = NULL;
1170         int statret, real_ret, stat_errno;
1171         char *fnamecmp, *partialptr, *backupptr = NULL;
1172         char fnamecmpbuf[MAXPATHLEN];
1173         uchar fnamecmp_type;
1174         int implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
1175         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1176
1177         if (verbose > 2)
1178                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1179
1180         if (list_only) {
1181                 if (S_ISDIR(file->mode)
1182                  && ((!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1183                   || (inc_recurse && ndx != cur_flist->ndx_start - 1)))
1184                         return;
1185                 list_file_entry(file);
1186                 return;
1187         }
1188
1189         if (server_filter_list.head) {
1190                 if (excluded_below >= 0) {
1191                         if (F_DEPTH(file) > excluded_below
1192                          && (!implied_dirs_are_missing || f_name_has_prefix(file, excluded_dir)))
1193                                 goto skipping;
1194                         excluded_below = -1;
1195                 }
1196                 if (check_filter(&server_filter_list, fname,
1197                                  S_ISDIR(file->mode)) < 0) {
1198                         if (S_ISDIR(file->mode)) {
1199                                 excluded_below = F_DEPTH(file);
1200                                 excluded_dir = file;
1201                         }
1202                   skipping:
1203                         if (verbose) {
1204                                 rprintf(FINFO,
1205                                         "skipping server-excluded file \"%s\"\n",
1206                                         fname);
1207                         }
1208                         return;
1209                 }
1210         }
1211
1212         if (missing_below >= 0) {
1213                 if (F_DEPTH(file) <= missing_below
1214                  || (implied_dirs_are_missing && !f_name_has_prefix(file, missing_dir))) {
1215                         if (dry_run)
1216                                 dry_run--;
1217                         missing_below = -1;
1218                 } else if (!dry_run) {
1219                         if (S_ISDIR(file->mode))
1220                                 file->flags |= FLAG_MISSING_DIR;
1221                         return;
1222                 }
1223         }
1224 #ifdef SUPPORT_ACLS
1225         sx.acc_acl = sx.def_acl = NULL;
1226 #endif
1227 #ifdef SUPPORT_XATTRS
1228         sx.xattr = NULL;
1229 #endif
1230         if (dry_run > 1) {
1231                 if (fuzzy_dirlist) {
1232                         flist_free(fuzzy_dirlist);
1233                         fuzzy_dirlist = NULL;
1234                 }
1235                 parent_dirname = "";
1236                 statret = -1;
1237                 stat_errno = ENOENT;
1238         } else {
1239                 const char *dn = file->dirname ? file->dirname : ".";
1240                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1241                         if (relative_paths && !implied_dirs
1242                          && do_stat(dn, &sx.st) < 0
1243                          && create_directory_path(fname) < 0) {
1244                                 rsyserr(FERROR, errno,
1245                                         "recv_generator: mkdir %s failed",
1246                                         full_fname(dn));
1247                         }
1248                         if (fuzzy_dirlist) {
1249                                 flist_free(fuzzy_dirlist);
1250                                 fuzzy_dirlist = NULL;
1251                         }
1252                         if (fuzzy_basis)
1253                                 need_fuzzy_dirlist = 1;
1254 #ifdef SUPPORT_ACLS
1255                         if (!preserve_perms)
1256                                 dflt_perms = default_perms_for_dir(dn);
1257 #endif
1258                 }
1259                 parent_dirname = dn;
1260
1261                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1262                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1263                         fuzzy_dirlist = get_dirlist(fnamecmpbuf, -1, 1);
1264                         need_fuzzy_dirlist = 0;
1265                 }
1266
1267                 statret = link_stat(fname, &sx.st,
1268                                     keep_dirlinks && S_ISDIR(file->mode));
1269                 stat_errno = errno;
1270         }
1271
1272         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1273                 if (verbose > 1) {
1274                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1275                                 S_ISDIR(file->mode) ? "directory" : "file",
1276                                 fname);
1277                 }
1278                 if (S_ISDIR(file->mode)) {
1279                         if (missing_below < 0) {
1280                                 if (dry_run)
1281                                         dry_run++;
1282                                 missing_below = F_DEPTH(file);
1283                                 missing_dir = file;
1284                         }
1285                         file->flags |= FLAG_MISSING_DIR;
1286                 }
1287                 return;
1288         }
1289
1290         if (S_ISDIR(file->mode)) {
1291                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1292                         goto cleanup;
1293                 if (inc_recurse && ndx != cur_flist->ndx_start - 1) {
1294                         /* In inc_recurse mode we want to make sure any missing
1295                          * directories get created while we're still processing
1296                          * the parent dir (which allows us to touch the parent
1297                          * dir's mtime right away).  We will handle the dir in
1298                          * full later (right before we handle its contents). */
1299                         if (statret == 0
1300                          && (S_ISDIR(sx.st.st_mode)
1301                           || delete_item(fname, sx.st.st_mode, "directory", del_opts) != 0))
1302                                 goto cleanup; /* Any errors get reported later. */
1303                         if (do_mkdir(fname, file->mode & 0700) == 0)
1304                                 file->flags |= FLAG_DIR_CREATED;
1305                         goto cleanup;
1306                 }
1307                 /* The file to be received is a directory, so we need
1308                  * to prepare appropriately.  If there is already a
1309                  * file of that name and it is *not* a directory, then
1310                  * we need to delete it.  If it doesn't exist, then
1311                  * (perhaps recursively) create it. */
1312                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1313                         if (delete_item(fname, sx.st.st_mode, "directory", del_opts) != 0)
1314                                 goto skipping_dir_contents;
1315                         statret = -1;
1316                 }
1317                 if (dry_run && statret != 0 && missing_below < 0) {
1318                         missing_below = F_DEPTH(file);
1319                         missing_dir = file;
1320                         dry_run++;
1321                 }
1322                 real_ret = statret;
1323                 real_sx = sx;
1324                 if (file->flags & FLAG_DIR_CREATED)
1325                         statret = -1;
1326                 if (!preserve_perms) { /* See comment in non-dir code below. */
1327                         file->mode = dest_mode(file->mode, sx.st.st_mode,
1328                                                dflt_perms, statret == 0);
1329                 }
1330                 if (statret != 0 && basis_dir[0] != NULL) {
1331                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1332                                               itemizing, code);
1333                         if (j == -2) {
1334                                 itemizing = 0;
1335                                 code = FNONE;
1336                         } else if (j >= 0)
1337                                 statret = 1;
1338                 }
1339                 if (itemizing && f_out != -1) {
1340                         itemize(fname, file, ndx, statret, &sx,
1341                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1342                 }
1343                 if (real_ret != 0 && do_mkdir(fname,file->mode) < 0 && errno != EEXIST) {
1344                         if (!relative_paths || errno != ENOENT
1345                             || create_directory_path(fname) < 0
1346                             || (do_mkdir(fname, file->mode) < 0 && errno != EEXIST)) {
1347                                 rsyserr(FERROR, errno,
1348                                         "recv_generator: mkdir %s failed",
1349                                         full_fname(fname));
1350                           skipping_dir_contents:
1351                                 rprintf(FERROR,
1352                                     "*** Skipping any contents from this failed directory ***\n");
1353                                 missing_below = F_DEPTH(file);
1354                                 missing_dir = file;
1355                                 file->flags |= FLAG_MISSING_DIR;
1356                                 goto cleanup;
1357                         }
1358                 }
1359                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1360                     && verbose && code != FNONE && f_out != -1)
1361                         rprintf(code, "%s/\n", fname);
1362
1363                 /* We need to ensure that the dirs in the transfer have writable
1364                  * permissions during the time we are putting files within them.
1365                  * This is then fixed after the transfer is done. */
1366 #ifdef HAVE_CHMOD
1367                 if (!am_root && !(file->mode & S_IWUSR) && dir_tweaking) {
1368                         mode_t mode = file->mode | S_IWUSR;
1369                         if (do_chmod(fname, mode) < 0) {
1370                                 rsyserr(FERROR, errno,
1371                                         "failed to modify permissions on %s",
1372                                         full_fname(fname));
1373                         }
1374                         need_retouch_dir_perms = 1;
1375                 }
1376 #endif
1377
1378                 if (real_ret != 0 && one_file_system)
1379                         real_sx.st.st_dev = filesystem_dev;
1380                 if (inc_recurse) {
1381                         if (one_file_system) {
1382                                 uint32 *devp = F_DIR_DEV_P(file);
1383                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1384                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1385                         }
1386                 }
1387                 else if (delete_during && f_out != -1 && !phase && dry_run < 2
1388                     && (file->flags & FLAG_CONTENT_DIR))
1389                         delete_in_dir(fname, file, &real_sx.st.st_dev);
1390                 goto cleanup;
1391         }
1392
1393         /* If we're not preserving permissions, change the file-list's
1394          * mode based on the local permissions and some heuristics. */
1395         if (!preserve_perms) {
1396                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1397                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1398                                        exists);
1399         }
1400
1401 #ifdef SUPPORT_HARD_LINKS
1402         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1403          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1404                 goto cleanup;
1405 #endif
1406
1407         if (preserve_links && S_ISLNK(file->mode)) {
1408 #ifdef SUPPORT_LINKS
1409                 const char *sl = F_SYMLINK(file);
1410                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1411                         if (verbose) {
1412                                 if (solo_file)
1413                                         fname = f_name(file, NULL);
1414                                 rprintf(FINFO,
1415                                         "ignoring unsafe symlink %s -> \"%s\"\n",
1416                                         full_fname(fname), sl);
1417                         }
1418                         return;
1419                 }
1420                 if (statret == 0) {
1421                         char lnk[MAXPATHLEN];
1422                         int len;
1423
1424                         if (!S_ISLNK(sx.st.st_mode))
1425                                 statret = -1;
1426                         else if ((len = readlink(fname, lnk, MAXPATHLEN-1)) > 0
1427                               && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1428                                 /* The link is pointing to the right place. */
1429                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1430                                 if (itemizing)
1431                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1432 #ifdef SUPPORT_HARD_LINKS
1433                                 if (preserve_hard_links && F_IS_HLINKED(file))
1434                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1435 #endif
1436                                 if (remove_source_files == 1)
1437                                         goto return_with_success;
1438                                 goto cleanup;
1439                         }
1440                         /* Not the right symlink (or not a symlink), so
1441                          * delete it. */
1442                         if (delete_item(fname, sx.st.st_mode, "symlink", del_opts) != 0)
1443                                 goto cleanup;
1444                 } else if (basis_dir[0] != NULL) {
1445                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1446                                               itemizing, code);
1447                         if (j == -2) {
1448 #ifndef CAN_HARDLINK_SYMLINK
1449                                 if (link_dest) {
1450                                         /* Resort to --copy-dest behavior. */
1451                                 } else
1452 #endif
1453                                 if (!copy_dest)
1454                                         goto cleanup;
1455                                 itemizing = 0;
1456                                 code = FNONE;
1457                         } else if (j >= 0)
1458                                 statret = 1;
1459                 }
1460 #ifdef SUPPORT_HARD_LINKS
1461                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1462                         cur_flist->in_progress++;
1463                         goto cleanup;
1464                 }
1465 #endif
1466                 if (do_symlink(sl, fname) != 0) {
1467                         rsyserr(FERROR, errno, "symlink %s -> \"%s\" failed",
1468                                 full_fname(fname), sl);
1469                 } else {
1470                         set_file_attrs(fname, file, NULL, NULL, 0);
1471                         if (itemizing) {
1472                                 itemize(fname, file, ndx, statret, &sx,
1473                                         ITEM_LOCAL_CHANGE, 0, NULL);
1474                         }
1475                         if (code != FNONE && verbose)
1476                                 rprintf(code, "%s -> %s\n", fname, sl);
1477 #ifdef SUPPORT_HARD_LINKS
1478                         if (preserve_hard_links && F_IS_HLINKED(file))
1479                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1480 #endif
1481                         /* This does not check remove_source_files == 1
1482                          * because this is one of the items that the old
1483                          * --remove-sent-files option would remove. */
1484                         if (remove_source_files)
1485                                 goto return_with_success;
1486                 }
1487 #endif
1488                 goto cleanup;
1489         }
1490
1491         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1492          || (preserve_specials && IS_SPECIAL(file->mode))) {
1493                 uint32 *devp = F_RDEV_P(file);
1494                 dev_t rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1495                 if (statret == 0) {
1496                         char *t;
1497                         if (IS_DEVICE(file->mode)) {
1498                                 if (!IS_DEVICE(sx.st.st_mode))
1499                                         statret = -1;
1500                                 t = "device file";
1501                         } else {
1502                                 if (!IS_SPECIAL(sx.st.st_mode))
1503                                         statret = -1;
1504                                 t = "special file";
1505                         }
1506                         if (statret == 0
1507                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1508                          && sx.st.st_rdev == rdev) {
1509                                 /* The device or special file is identical. */
1510                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1511                                 if (itemizing)
1512                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1513 #ifdef SUPPORT_HARD_LINKS
1514                                 if (preserve_hard_links && F_IS_HLINKED(file))
1515                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1516 #endif
1517                                 if (remove_source_files == 1)
1518                                         goto return_with_success;
1519                                 goto cleanup;
1520                         }
1521                         if (delete_item(fname, sx.st.st_mode, t, del_opts) != 0)
1522                                 goto cleanup;
1523                 } else if (basis_dir[0] != NULL) {
1524                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1525                                               itemizing, code);
1526                         if (j == -2) {
1527 #ifndef CAN_HARDLINK_SPECIAL
1528                                 if (link_dest) {
1529                                         /* Resort to --copy-dest behavior. */
1530                                 } else
1531 #endif
1532                                 if (!copy_dest)
1533                                         goto cleanup;
1534                                 itemizing = 0;
1535                                 code = FNONE;
1536                         } else if (j >= 0)
1537                                 statret = 1;
1538                 }
1539 #ifdef SUPPORT_HARD_LINKS
1540                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1541                         cur_flist->in_progress++;
1542                         goto cleanup;
1543                 }
1544 #endif
1545                 if (verbose > 2) {
1546                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1547                                 fname, (int)file->mode,
1548                                 (long)major(rdev), (long)minor(rdev));
1549                 }
1550                 if (do_mknod(fname, file->mode, rdev) < 0) {
1551                         rsyserr(FERROR, errno, "mknod %s failed",
1552                                 full_fname(fname));
1553                 } else {
1554                         set_file_attrs(fname, file, NULL, NULL, 0);
1555                         if (itemizing) {
1556                                 itemize(fname, file, ndx, statret, &sx,
1557                                         ITEM_LOCAL_CHANGE, 0, NULL);
1558                         }
1559                         if (code != FNONE && verbose)
1560                                 rprintf(code, "%s\n", fname);
1561 #ifdef SUPPORT_HARD_LINKS
1562                         if (preserve_hard_links && F_IS_HLINKED(file))
1563                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1564 #endif
1565                         if (remove_source_files == 1)
1566                                 goto return_with_success;
1567                 }
1568                 goto cleanup;
1569         }
1570
1571         if (!S_ISREG(file->mode)) {
1572                 if (solo_file)
1573                         fname = f_name(file, NULL);
1574                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1575                 goto cleanup;
1576         }
1577
1578         if (max_size > 0 && F_LENGTH(file) > max_size) {
1579                 if (verbose > 1) {
1580                         if (solo_file)
1581                                 fname = f_name(file, NULL);
1582                         rprintf(FINFO, "%s is over max-size\n", fname);
1583                 }
1584                 goto cleanup;
1585         }
1586         if (min_size > 0 && F_LENGTH(file) < min_size) {
1587                 if (verbose > 1) {
1588                         if (solo_file)
1589                                 fname = f_name(file, NULL);
1590                         rprintf(FINFO, "%s is under min-size\n", fname);
1591                 }
1592                 goto cleanup;
1593         }
1594
1595         if (ignore_existing > 0 && statret == 0) {
1596                 if (verbose > 1)
1597                         rprintf(FINFO, "%s exists\n", fname);
1598                 goto cleanup;
1599         }
1600
1601         if (update_only > 0 && statret == 0
1602             && cmp_time(sx.st.st_mtime, file->modtime) > 0) {
1603                 if (verbose > 1)
1604                         rprintf(FINFO, "%s is newer\n", fname);
1605                 goto cleanup;
1606         }
1607
1608         fnamecmp = fname;
1609         fnamecmp_type = FNAMECMP_FNAME;
1610
1611         if (statret == 0 && !S_ISREG(sx.st.st_mode)) {
1612                 if (delete_item(fname, sx.st.st_mode, "regular file", del_opts) != 0)
1613                         goto cleanup;
1614                 statret = -1;
1615                 stat_errno = ENOENT;
1616         }
1617
1618         if (statret != 0 && basis_dir[0] != NULL) {
1619                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1620                                       itemizing, code);
1621                 if (j == -2) {
1622                         if (remove_source_files == 1)
1623                                 goto return_with_success;
1624                         goto cleanup;
1625                 }
1626                 if (j >= 0) {
1627                         fnamecmp = fnamecmpbuf;
1628                         fnamecmp_type = j;
1629                         statret = 0;
1630                 }
1631         }
1632
1633         real_ret = statret;
1634         real_sx = sx;
1635
1636         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1637             && link_stat(partialptr, &partial_st, 0) == 0
1638             && S_ISREG(partial_st.st_mode)) {
1639                 if (statret != 0)
1640                         goto prepare_to_open;
1641         } else
1642                 partialptr = NULL;
1643
1644         if (statret != 0 && fuzzy_dirlist && dry_run <= 1) {
1645                 int j = find_fuzzy(file, fuzzy_dirlist);
1646                 if (j >= 0) {
1647                         fuzzy_file = fuzzy_dirlist->files[j];
1648                         f_name(fuzzy_file, fnamecmpbuf);
1649                         if (verbose > 2) {
1650                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1651                                         fname, fnamecmpbuf);
1652                         }
1653                         sx.st.st_size = F_LENGTH(fuzzy_file);
1654                         statret = 0;
1655                         fnamecmp = fnamecmpbuf;
1656                         fnamecmp_type = FNAMECMP_FUZZY;
1657                 }
1658         }
1659
1660         if (statret != 0) {
1661 #ifdef SUPPORT_HARD_LINKS
1662                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1663                         cur_flist->in_progress++;
1664                         goto cleanup;
1665                 }
1666 #endif
1667                 if (stat_errno == ENOENT)
1668                         goto notify_others;
1669                 rsyserr(FERROR, stat_errno, "recv_generator: failed to stat %s",
1670                         full_fname(fname));
1671                 goto cleanup;
1672         }
1673
1674         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file))
1675                 goto cleanup;
1676
1677         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1678                 ;
1679         else if (fnamecmp_type == FNAMECMP_FUZZY)
1680                 ;
1681         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1682                 if (partialptr) {
1683                         do_unlink(partialptr);
1684                         handle_partial_dir(partialptr, PDIR_DELETE);
1685                 }
1686                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1687                 if (itemizing)
1688                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1689 #ifdef SUPPORT_HARD_LINKS
1690                 if (preserve_hard_links && F_IS_HLINKED(file))
1691                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1692 #endif
1693                 if (remove_source_files != 1)
1694                         goto cleanup;
1695           return_with_success:
1696                 if (!dry_run)
1697                         send_msg_int(MSG_SUCCESS, ndx);
1698                 goto cleanup;
1699         }
1700
1701   prepare_to_open:
1702         if (partialptr) {
1703                 sx.st = partial_st;
1704                 fnamecmp = partialptr;
1705                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1706                 statret = 0;
1707         }
1708
1709         if (!do_xfers)
1710                 goto notify_others;
1711
1712         if (read_batch || whole_file) {
1713                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1714                         if (!(backupptr = get_backup_name(fname)))
1715                                 goto cleanup;
1716                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1717                                 goto pretend_missing;
1718                         if (copy_file(fname, backupptr, -1, back_file->mode, 1) < 0) {
1719                                 unmake_file(back_file);
1720                                 back_file = NULL;
1721                                 goto cleanup;
1722                         }
1723                 }
1724                 goto notify_others;
1725         }
1726
1727         if (fuzzy_dirlist) {
1728                 int j = flist_find(fuzzy_dirlist, file);
1729                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1730                         fuzzy_dirlist->files[j]->flags |= FLAG_FILE_SENT;
1731         }
1732
1733         /* open the file */
1734         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1735                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1736                         full_fname(fnamecmp));
1737           pretend_missing:
1738                 /* pretend the file didn't exist */
1739 #ifdef SUPPORT_HARD_LINKS
1740                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1741                         cur_flist->in_progress++;
1742                         goto cleanup;
1743                 }
1744 #endif
1745                 statret = real_ret = -1;
1746                 goto notify_others;
1747         }
1748
1749         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1750                 if (!(backupptr = get_backup_name(fname))) {
1751                         close(fd);
1752                         goto cleanup;
1753                 }
1754                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1755                         close(fd);
1756                         goto pretend_missing;
1757                 }
1758                 if (robust_unlink(backupptr) && errno != ENOENT) {
1759                         rsyserr(FERROR, errno, "unlink %s",
1760                                 full_fname(backupptr));
1761                         unmake_file(back_file);
1762                         back_file = NULL;
1763                         close(fd);
1764                         goto cleanup;
1765                 }
1766                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0
1767                  && (errno != ENOENT || make_bak_dir(backupptr) < 0
1768                   || (f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0)) {
1769                         rsyserr(FERROR, errno, "open %s",
1770                                 full_fname(backupptr));
1771                         unmake_file(back_file);
1772                         back_file = NULL;
1773                         close(fd);
1774                         goto cleanup;
1775                 }
1776                 fnamecmp_type = FNAMECMP_BACKUP;
1777         }
1778
1779         if (verbose > 3) {
1780                 rprintf(FINFO, "gen mapped %s of size %.0f\n",
1781                         fnamecmp, (double)sx.st.st_size);
1782         }
1783
1784         if (verbose > 2)
1785                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1786
1787   notify_others:
1788         if (remove_source_files && !delay_updates && !phase)
1789                 increment_active_files(ndx, itemizing, code);
1790         if (inc_recurse && !dry_run)
1791                 cur_flist->in_progress++;
1792 #ifdef SUPPORT_HARD_LINKS
1793         if (preserve_hard_links && F_IS_HLINKED(file))
1794                 file->flags |= FLAG_FILE_SENT;
1795 #endif
1796         write_ndx(f_out, ndx);
1797         if (itemizing) {
1798                 int iflags = ITEM_TRANSFER;
1799                 if (always_checksum > 0)
1800                         iflags |= ITEM_REPORT_CHECKSUM;
1801                 if (fnamecmp_type != FNAMECMP_FNAME)
1802                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1803                 if (fnamecmp_type == FNAMECMP_FUZZY)
1804                         iflags |= ITEM_XNAME_FOLLOWS;
1805                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1806                         fuzzy_file ? fuzzy_file->basename : NULL);
1807 #ifdef SUPPORT_ACLS
1808                 if (preserve_acls)
1809                         free_acl(&real_sx);
1810 #endif
1811 #ifdef SUPPORT_XATTRS
1812                 if (preserve_xattrs)
1813                         free_xattr(&real_sx);
1814 #endif
1815         }
1816
1817         if (!do_xfers) {
1818 #ifdef SUPPORT_HARD_LINKS
1819                 if (preserve_hard_links && F_IS_HLINKED(file))
1820                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1821 #endif
1822                 goto cleanup;
1823         }
1824         if (read_batch)
1825                 goto cleanup;
1826
1827         if (statret != 0 || whole_file)
1828                 write_sum_head(f_out, NULL);
1829         else {
1830                 generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy);
1831                 close(fd);
1832         }
1833
1834   cleanup:
1835         if (back_file) {
1836                 if (f_copy >= 0)
1837                         close(f_copy);
1838                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1839                 if (verbose > 1) {
1840                         rprintf(FINFO, "backed up %s to %s\n",
1841                                 fname, backupptr);
1842                 }
1843                 unmake_file(back_file);
1844         }
1845
1846 #ifdef SUPPORT_ACLS
1847         if (preserve_acls)
1848                 free_acl(&sx);
1849 #endif
1850 #ifdef SUPPORT_XATTRS
1851         if (preserve_xattrs)
1852                 free_xattr(&sx);
1853 #endif
1854         return;
1855 }
1856
1857 static void touch_up_dirs(struct file_list *flist, int ndx)
1858 {
1859         static int counter = 0;
1860         struct file_struct *file;
1861         char *fname;
1862         int i, start, end;
1863
1864         if (ndx < 0) {
1865                 start = 0;
1866                 end = flist->used - 1;
1867         } else
1868                 start = end = ndx;
1869
1870         /* Fix any directory permissions that were modified during the
1871          * transfer and/or re-set any tweaked modified-time values. */
1872         for (i = start; i <= end; i++, counter++) {
1873                 file = flist->files[i];
1874                 if (!S_ISDIR(file->mode)
1875                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1876                         continue;
1877                 if (verbose > 3) {
1878                         fname = f_name(file, NULL);
1879                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
1880                                 NS(fname), i);
1881                 }
1882                 if (!F_IS_ACTIVE(file) || file->flags & FLAG_MISSING_DIR
1883                  || (!need_retouch_dir_times && file->mode & S_IWUSR))
1884                         continue;
1885                 fname = f_name(file, NULL);
1886                 if (!(file->mode & S_IWUSR))
1887                         do_chmod(fname, file->mode);
1888                 if (need_retouch_dir_times)
1889                         set_modtime(fname, file->modtime, file->mode);
1890                 if (allowed_lull && !(counter % lull_mod))
1891                         maybe_send_keepalive();
1892                 else if (!(counter & 0xFF))
1893                         maybe_flush_socket(0);
1894         }
1895 }
1896
1897 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
1898 {
1899         struct file_struct *file;
1900         struct file_list *flist;
1901         char fbuf[MAXPATHLEN];
1902         int ndx;
1903
1904 #ifdef SUPPORT_HARD_LINKS
1905         while (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
1906                 flist = flist_for_ndx(ndx);
1907                 assert(flist != NULL);
1908                 file = flist->files[ndx - flist->ndx_start];
1909                 assert(file->flags & FLAG_HLINKED);
1910                 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
1911                 flist->in_progress--;
1912         }
1913 #endif
1914
1915         while (check_redo && (ndx = get_redo_num()) != -1) {
1916                 csum_length = SUM_LENGTH;
1917                 max_size = -max_size;
1918                 min_size = -min_size;
1919                 ignore_existing = -ignore_existing;
1920                 ignore_non_existing = -ignore_non_existing;
1921                 update_only = -update_only;
1922                 always_checksum = -always_checksum;
1923                 size_only = -size_only;
1924                 append_mode = -append_mode;
1925                 make_backups = -make_backups; /* avoid dup backup w/inplace */
1926                 ignore_times++;
1927
1928                 flist = cur_flist;
1929                 cur_flist = flist_for_ndx(ndx);
1930
1931                 file = cur_flist->files[ndx - cur_flist->ndx_start];
1932                 if (solo_file)
1933                         strlcpy(fbuf, solo_file, sizeof fbuf);
1934                 else
1935                         f_name(file, fbuf);
1936                 recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
1937                 cur_flist->to_redo--;
1938
1939                 cur_flist = flist;
1940
1941                 csum_length = SHORT_SUM_LENGTH;
1942                 max_size = -max_size;
1943                 min_size = -min_size;
1944                 ignore_existing = -ignore_existing;
1945                 ignore_non_existing = -ignore_non_existing;
1946                 update_only = -update_only;
1947                 always_checksum = -always_checksum;
1948                 size_only = -size_only;
1949                 append_mode = -append_mode;
1950                 make_backups = -make_backups;
1951                 ignore_times--;
1952         }
1953
1954         while (cur_flist != first_flist) { /* only possible with inc_recurse */
1955                 if (first_flist->in_progress || first_flist->to_redo)
1956                         break;
1957
1958                 if (!read_batch) {
1959                         write_ndx(sock_f_out, NDX_DONE);
1960                         maybe_flush_socket(1);
1961                 }
1962
1963                 if (delete_during == 2 || !dir_tweaking) {
1964                         /* Skip directory touch-up. */
1965                 } else if (first_flist->parent_ndx >= 0)
1966                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
1967
1968                 flist_free(first_flist); /* updates first_flist */
1969         }
1970 }
1971
1972 void generate_files(int f_out, const char *local_name)
1973 {
1974         int i, ndx;
1975         char fbuf[MAXPATHLEN];
1976         int itemizing;
1977         enum logcode code;
1978         int save_do_progress = do_progress;
1979
1980         if (protocol_version >= 29) {
1981                 itemizing = 1;
1982                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1983                 code = logfile_format_has_i ? FNONE : FLOG;
1984         } else if (am_daemon) {
1985                 itemizing = logfile_format_has_i && do_xfers;
1986                 maybe_ATTRS_REPORT = ATTRS_REPORT;
1987                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
1988         } else if (!am_server) {
1989                 itemizing = stdout_format_has_i;
1990                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
1991                 code = itemizing ? FNONE : FINFO;
1992         } else {
1993                 itemizing = 0;
1994                 maybe_ATTRS_REPORT = ATTRS_REPORT;
1995                 code = FINFO;
1996         }
1997         solo_file = local_name;
1998         dir_tweaking = !(list_only || solo_file || dry_run);
1999         need_retouch_dir_times = preserve_times > 1;
2000         lull_mod = allowed_lull * 5;
2001
2002         if (verbose > 2)
2003                 rprintf(FINFO, "generator starting pid=%ld\n", (long)getpid());
2004
2005         if (delete_before && !solo_file && cur_flist->used > 0)
2006                 do_delete_pass();
2007         if (delete_during == 2) {
2008                 deldelay_size = BIGPATHBUFLEN * 4;
2009                 deldelay_buf = new_array(char, deldelay_size);
2010                 if (!deldelay_buf)
2011                         out_of_memory("delete-delay");
2012         }
2013         do_progress = 0;
2014
2015         if (append_mode > 0 || whole_file < 0)
2016                 whole_file = 0;
2017         if (verbose >= 2) {
2018                 rprintf(FINFO, "delta-transmission %s\n",
2019                         whole_file
2020                         ? "disabled for local transfer or --whole-file"
2021                         : "enabled");
2022         }
2023
2024         /* Since we often fill up the outgoing socket and then just sit around
2025          * waiting for the other 2 processes to do their thing, we don't want
2026          * to exit on a timeout.  If the data stops flowing, the receiver will
2027          * notice that and let us know via the redo pipe (or its closing). */
2028         ignore_timeout = 1;
2029
2030         dflt_perms = (ACCESSPERMS & ~orig_umask);
2031
2032         do {
2033 #ifdef SUPPORT_HARD_LINKS
2034                 if (preserve_hard_links && inc_recurse) {
2035                         while (!flist_eof && file_total < FILECNT_LOOKAHEAD/2)
2036                                 wait_for_receiver();
2037                 }
2038 #endif
2039
2040                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2041                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2042                         f_name(fp, fbuf);
2043                         ndx = cur_flist->ndx_start - 1;
2044                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2045                         if (delete_during && dry_run < 2) {
2046                                 if (BITS_SETnUNSET(fp->flags, FLAG_CONTENT_DIR, FLAG_MISSING_DIR)) {
2047                                         dev_t dirdev;
2048                                         if (one_file_system) {
2049                                                 uint32 *devp = F_DIR_DEV_P(fp);
2050                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2051                                         } else
2052                                                 dirdev = MAKEDEV(0, 0);
2053                                         delete_in_dir(f_name(fp, fbuf), fp, &dirdev);
2054                                 }
2055                         }
2056                 }
2057                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2058                         struct file_struct *file = cur_flist->sorted[i];
2059
2060                         if (!F_IS_ACTIVE(file))
2061                                 continue;
2062
2063 #ifdef ICONV_OPTION
2064                         if (ic_ndx)
2065                                 ndx = F_NDX(file);
2066                         else
2067 #endif
2068                                 ndx = i + cur_flist->ndx_start;
2069
2070                         if (solo_file)
2071                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2072                         else
2073                                 f_name(file, fbuf);
2074                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2075
2076                         check_for_finished_files(itemizing, code, 0);
2077
2078                         if (allowed_lull && !(i % lull_mod))
2079                                 maybe_send_keepalive();
2080                         else if (!(i & 0xFF))
2081                                 maybe_flush_socket(0);
2082                 }
2083
2084                 if (!inc_recurse) {
2085                         write_ndx(f_out, NDX_DONE);
2086                         break;
2087                 }
2088
2089                 while (1) {
2090                         check_for_finished_files(itemizing, code, 1);
2091                         if (cur_flist->next || flist_eof)
2092                                 break;
2093                         wait_for_receiver();
2094                 }
2095         } while ((cur_flist = cur_flist->next) != NULL);
2096
2097         if (delete_during)
2098                 delete_in_dir(NULL, NULL, &dev_zero);
2099         phase++;
2100         if (verbose > 2)
2101                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2102
2103         while (1) {
2104                 check_for_finished_files(itemizing, code, 1);
2105                 if (msgdone_cnt)
2106                         break;
2107                 wait_for_receiver();
2108         }
2109
2110         phase++;
2111         if (verbose > 2)
2112                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2113
2114         write_ndx(f_out, NDX_DONE);
2115         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2116         if (protocol_version >= 29 && !delay_updates)
2117                 write_ndx(f_out, NDX_DONE);
2118
2119         /* Read MSG_DONE for the redo phase (and any prior messages). */
2120         while (1) {
2121                 check_for_finished_files(itemizing, code, 0);
2122                 if (msgdone_cnt > 1)
2123                         break;
2124                 wait_for_receiver();
2125         }
2126
2127         if (protocol_version >= 29) {
2128                 phase++;
2129                 if (verbose > 2)
2130                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2131                 if (delay_updates)
2132                         write_ndx(f_out, NDX_DONE);
2133                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2134                 while (msgdone_cnt == 2)
2135                         wait_for_receiver();
2136         }
2137
2138         do_progress = save_do_progress;
2139         if (delete_during == 2)
2140                 do_delayed_deletions(fbuf);
2141         if (delete_after && !solo_file && file_total > 0)
2142                 do_delete_pass();
2143
2144         if ((need_retouch_dir_perms || need_retouch_dir_times)
2145          && dir_tweaking && (!inc_recurse || delete_during == 2))
2146                 touch_up_dirs(dir_flist, -1);
2147
2148         if (max_delete >= 0 && deletion_count > max_delete) {
2149                 rprintf(FINFO,
2150                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2151                         deletion_count - max_delete);
2152                 io_error |= IOERR_DEL_LIMIT;
2153         }
2154
2155         if (verbose > 2)
2156                 rprintf(FINFO, "generate_files finished\n");
2157 }