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