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) 2003-2020 Wayne Davison
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 3 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, visit the http://fsf.org website.
  21  */
  22
  23 #include "rsync.h"
  24 #include "inums.h"
  25 #include "ifuncs.h"
  26
  27 extern int dry_run;
  28 extern int do_xfers;
  29 extern int stdout_format_has_i;
  30 extern int logfile_format_has_i;
  31 extern int am_root;
  32 extern int am_server;
  33 extern int am_daemon;
  34 extern int inc_recurse;
  35 extern int relative_paths;
  36 extern int implied_dirs;
  37 extern int keep_dirlinks;
  38 extern int preserve_acls;
  39 extern int preserve_xattrs;
  40 extern int preserve_links;
  41 extern int preserve_devices;
  42 extern int write_devices;
  43 extern int preserve_specials;
  44 extern int preserve_hard_links;
  45 extern int preserve_executability;
  46 extern int preserve_perms;
  47 extern int preserve_times;
  48 extern int delete_mode;
  49 extern int delete_before;
  50 extern int delete_during;
  51 extern int delete_after;
  52 extern int missing_args;
  53 extern int msgdone_cnt;
  54 extern int ignore_errors;
  55 extern int remove_source_files;
  56 extern int delay_updates;
  57 extern int update_only;
  58 extern int human_readable;
  59 extern int ignore_existing;
  60 extern int ignore_non_existing;
  61 extern int want_xattr_optim;
  62 extern int modify_window;
  63 extern int inplace;
  64 extern int append_mode;
  65 extern int make_backups;
  66 extern int csum_length;
  67 extern int ignore_times;
  68 extern int size_only;
  69 extern OFF_T max_size;
  70 extern OFF_T min_size;
  71 extern int io_error;
  72 extern int flist_eof;
  73 extern int allowed_lull;
  74 extern int sock_f_out;
  75 extern int protocol_version;
  76 extern int file_total;
  77 extern int fuzzy_basis;
  78 extern int always_checksum;
  79 extern int flist_csum_len;
  80 extern char *partial_dir;
  81 extern int alt_dest_type;
  82 extern int whole_file;
  83 extern int list_only;
  84 extern int read_batch;
  85 extern int write_batch;
  86 extern int safe_symlinks;
  87 extern long block_size; /* "long" because popt can't set an int32. */
  88 extern int unsort_ndx;
  89 extern int max_delete;
  90 extern int force_delete;
  91 extern int one_file_system;
  92 extern int skipped_deletes;
  93 extern dev_t filesystem_dev;
  94 extern mode_t orig_umask;
  95 extern uid_t our_uid;
  96 extern char *tmpdir;
  97 extern char *basis_dir[MAX_BASIS_DIRS+1];
  98 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  99 extern filter_rule_list filter_list, daemon_filter_list;
 100
 101 int maybe_ATTRS_REPORT = 0;
 102 int maybe_ATTRS_ACCURATE_TIME = 0;
 103
 104 static dev_t dev_zero;
 105 static int deldelay_size = 0, deldelay_cnt = 0;
 106 static char *deldelay_buf = NULL;
 107 static int deldelay_fd = -1;
 108 static int loopchk_limit;
 109 static int dir_tweaking;
 110 static int symlink_timeset_failed_flags;
 111 static int need_retouch_dir_times;
 112 static int need_retouch_dir_perms;
 113 static const char *solo_file = NULL;
 114
 115 enum nonregtype {
 116         TYPE_DIR, TYPE_SPECIAL, TYPE_DEVICE, TYPE_SYMLINK
 117 };
 118
 119 /* Forward declarations. */
 120 #ifdef SUPPORT_HARD_LINKS
 121 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
 122                                  enum logcode code, int f_out);
 123 #endif
 124
 125 #define EARLY_DELAY_DONE_MSG() (!delay_updates)
 126 #define EARLY_DELETE_DONE_MSG() (!(delete_during == 2 || delete_after))
 127
 128 static int start_delete_delay_temp(void)
 129 {
 130         char fnametmp[MAXPATHLEN];
 131         int save_dry_run = dry_run;
 132
 133         dry_run = 0;
 134         if (!get_tmpname(fnametmp, "deldelay", False)
 135          || (deldelay_fd = do_mkstemp(fnametmp, 0600)) < 0) {
 136                 rprintf(FINFO, "NOTE: Unable to create delete-delay temp file%s.\n",
 137                         inc_recurse ? "" : " -- switching to --delete-after");
 138                 delete_during = 0;
 139                 delete_after = !inc_recurse;
 140                 dry_run = save_dry_run;
 141                 return 0;
 142         }
 143         unlink(fnametmp);
 144         dry_run = save_dry_run;
 145         return 1;
 146 }
 147
 148 static int flush_delete_delay(void)
 149 {
 150         if (deldelay_fd < 0 && !start_delete_delay_temp())
 151                 return 0;
 152         if (write(deldelay_fd, deldelay_buf, deldelay_cnt) != deldelay_cnt) {
 153                 rsyserr(FERROR, errno, "flush of delete-delay buffer");
 154                 delete_during = 0;
 155                 delete_after = !inc_recurse;
 156                 close(deldelay_fd);
 157                 return 0;
 158         }
 159         deldelay_cnt = 0;
 160         return 1;
 161 }
 162
 163 static int remember_delete(struct file_struct *file, const char *fname, int flags)
 164 {
 165         int len;
 166
 167         if (deldelay_cnt == deldelay_size && !flush_delete_delay())
 168                 return 0;
 169
 170         if (flags & DEL_NO_UID_WRITE)
 171                 deldelay_buf[deldelay_cnt++] = '!';
 172
 173         while (1) {
 174                 len = snprintf(deldelay_buf + deldelay_cnt,
 175                                deldelay_size - deldelay_cnt,
 176                                "%x %s%c",
 177                                (int)file->mode, fname, '\0');
 178                 if ((deldelay_cnt += len) <= deldelay_size)
 179                         break;
 180                 deldelay_cnt -= len;
 181                 if (!flush_delete_delay())
 182                         return 0;
 183         }
 184
 185         return 1;
 186 }
 187
 188 static int read_delay_line(char *buf, int *flags_p)
 189 {
 190         static int read_pos = 0;
 191         int j, len, mode;
 192         char *bp, *past_space;
 193
 194         while (1) {
 195                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 196                 if (j < deldelay_cnt)
 197                         break;
 198                 if (deldelay_fd < 0) {
 199                         if (j > read_pos)
 200                                 goto invalid_data;
 201                         return -1;
 202                 }
 203                 deldelay_cnt -= read_pos;
 204                 if (deldelay_cnt == deldelay_size)
 205                         goto invalid_data;
 206                 if (deldelay_cnt && read_pos) {
 207                         memmove(deldelay_buf, deldelay_buf + read_pos,
 208                                 deldelay_cnt);
 209                 }
 210                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 211                            deldelay_size - deldelay_cnt);
 212                 if (len == 0) {
 213                         if (deldelay_cnt) {
 214                                 rprintf(FERROR,
 215                                     "ERROR: unexpected EOF in delete-delay file.\n");
 216                         }
 217                         return -1;
 218                 }
 219                 if (len < 0) {
 220                         rsyserr(FERROR, errno,
 221                                 "reading delete-delay file");
 222                         return -1;
 223                 }
 224                 deldelay_cnt += len;
 225                 read_pos = 0;
 226         }
 227
 228         bp = deldelay_buf + read_pos;
 229         if (*bp == '!') {
 230                 bp++;
 231                 *flags_p = DEL_NO_UID_WRITE;
 232         } else
 233                 *flags_p = 0;
 234
 235         if (sscanf(bp, "%x ", &mode) != 1) {
 236           invalid_data:
 237                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 238                 return -1;
 239         }
 240         past_space = strchr(bp, ' ') + 1;
 241         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 242         read_pos = j + 1;
 243
 244         if (len > MAXPATHLEN) {
 245                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 246                 return -1;
 247         }
 248
 249         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 250          * instead of returning a pointer to our buffer. */
 251         memcpy(buf, past_space, len);
 252
 253         return mode;
 254 }
 255
 256 static void do_delayed_deletions(char *delbuf)
 257 {
 258         int mode, flags;
 259
 260         if (deldelay_fd >= 0) {
 261                 if (deldelay_cnt && !flush_delete_delay())
 262                         return;
 263                 lseek(deldelay_fd, 0, 0);
 264         }
 265         while ((mode = read_delay_line(delbuf, &flags)) >= 0)
 266                 delete_item(delbuf, mode, flags | DEL_RECURSE);
 267         if (deldelay_fd >= 0)
 268                 close(deldelay_fd);
 269 }
 270
 271 /* This function is used to implement per-directory deletion, and is used by
 272  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 273  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 274  * call will append names onto the end, but the old dir value will be restored
 275  * on exit). */
 276 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 277 {
 278         static int already_warned = 0;
 279         static struct hashtable *dev_tbl;
 280         struct file_list *dirlist;
 281         char delbuf[MAXPATHLEN];
 282         int dlen, i;
 283
 284         if (!fbuf) {
 285                 change_local_filter_dir(NULL, 0, 0);
 286                 return;
 287         }
 288
 289         if (DEBUG_GTE(DEL, 2))
 290                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 291
 292         if (allowed_lull)
 293                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
 294
 295         if (io_error & IOERR_GENERAL && !ignore_errors) {
 296                 if (already_warned)
 297                         return;
 298                 rprintf(FINFO,
 299                         "IO error encountered -- skipping file deletion\n");
 300                 already_warned = 1;
 301                 return;
 302         }
 303
 304         dlen = strlen(fbuf);
 305         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 306
 307         if (one_file_system) {
 308                 if (!dev_tbl)
 309                         dev_tbl = hashtable_create(16, HT_KEY64);
 310                 if (file->flags & FLAG_TOP_DIR) {
 311                         hashtable_find(dev_tbl, *fs_dev+1, "");
 312                         filesystem_dev = *fs_dev;
 313                 } else if (filesystem_dev != *fs_dev) {
 314                         if (!hashtable_find(dev_tbl, *fs_dev+1, NULL))
 315                                 return;
 316                         filesystem_dev = *fs_dev; /* it's a prior top-dir dev */
 317                 }
 318         }
 319
 320         dirlist = get_dirlist(fbuf, dlen, 0);
 321
 322         /* If an item in dirlist is not found in flist, delete it
 323          * from the filesystem. */
 324         for (i = dirlist->used; i--; ) {
 325                 struct file_struct *fp = dirlist->files[i];
 326                 if (!F_IS_ACTIVE(fp))
 327                         continue;
 328                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 329                         if (INFO_GTE(MOUNT, 1))
 330                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 331                                         f_name(fp, NULL));
 332                         continue;
 333                 }
 334                 /* Here we want to match regardless of file type.  Replacement
 335                  * of a file with one of another type is handled separately by
 336                  * a delete_item call with a DEL_MAKE_ROOM flag. */
 337                 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
 338                         int flags = DEL_RECURSE;
 339                         if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
 340                                 flags |= DEL_NO_UID_WRITE;
 341                         f_name(fp, delbuf);
 342                         if (delete_during == 2) {
 343                                 if (!remember_delete(fp, delbuf, flags))
 344                                         break;
 345                         } else
 346                                 delete_item(delbuf, fp->mode, flags);
 347                 }
 348         }
 349
 350         flist_free(dirlist);
 351 }
 352
 353 /* This deletes any files on the receiving side that are not present on the
 354  * sending side.  This is used by --delete-before and --delete-after. */
 355 static void do_delete_pass(void)
 356 {
 357         char fbuf[MAXPATHLEN];
 358         STRUCT_STAT st;
 359         int j;
 360
 361         /* dry_run is incremented when the destination doesn't exist yet. */
 362         if (dry_run > 1 || list_only)
 363                 return;
 364
 365         for (j = 0; j < cur_flist->used; j++) {
 366                 struct file_struct *file = cur_flist->sorted[j];
 367
 368                 if (!F_IS_ACTIVE(file))
 369                         continue;
 370
 371                 f_name(file, fbuf);
 372
 373                 if (!(file->flags & FLAG_CONTENT_DIR)) {
 374                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
 375                         continue;
 376                 }
 377
 378                 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
 379                         rprintf(FINFO, "deleting in %s\n", fbuf);
 380
 381                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 382                  || !S_ISDIR(st.st_mode))
 383                         continue;
 384
 385                 delete_in_dir(fbuf, file, &st.st_dev);
 386         }
 387         delete_in_dir(NULL, NULL, &dev_zero);
 388
 389         if (INFO_GTE(FLIST, 2) && !am_server)
 390                 rprintf(FINFO, "                    \r");
 391 }
 392
 393 static inline int mtime_differs(STRUCT_STAT *stp, struct file_struct *file)
 394 {
 395 #ifdef ST_MTIME_NSEC
 396         return !same_time(stp->st_mtime, stp->ST_MTIME_NSEC, file->modtime, F_MOD_NSEC_or_0(file));
 397 #else
 398         return !same_time(stp->st_mtime, 0, file->modtime, 0);
 399 #endif
 400 }
 401
 402 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
 403 {
 404         if (preserve_perms)
 405                 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
 406
 407         if (preserve_executability)
 408                 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
 409
 410         return 0;
 411 }
 412
 413 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
 414 {
 415         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 416                 return 1;
 417
 418         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 419                 return 1;
 420
 421         return 0;
 422 }
 423
 424 #ifdef SUPPORT_ACLS
 425 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 426 {
 427         if (preserve_acls) {
 428                 if (!ACL_READY(*sxp))
 429                         get_acl(fname, sxp);
 430                 if (set_acl(NULL, file, sxp, file->mode))
 431                         return 1;
 432         }
 433
 434         return 0;
 435 }
 436 #endif
 437
 438 #ifdef SUPPORT_XATTRS
 439 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 440 {
 441         if (preserve_xattrs) {
 442                 if (!XATTR_READY(*sxp))
 443                         get_xattr(fname, sxp);
 444                 if (xattr_diff(file, sxp, 0))
 445                         return 1;
 446         }
 447
 448         return 0;
 449 }
 450 #endif
 451
 452 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 453 {
 454         if (S_ISLNK(file->mode)) {
 455 #ifdef CAN_SET_SYMLINK_TIMES
 456                 if (preserve_times & PRESERVE_LINK_TIMES && mtime_differs(&sxp->st, file))
 457                         return 0;
 458 #endif
 459 #ifdef CAN_CHMOD_SYMLINK
 460                 if (perms_differ(file, sxp))
 461                         return 0;
 462 #endif
 463 #ifdef CAN_CHOWN_SYMLINK
 464                 if (ownership_differs(file, sxp))
 465                         return 0;
 466 #endif
 467 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
 468                 if (acls_differ(fname, file, sxp))
 469                         return 0;
 470 #endif
 471 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
 472                 if (xattrs_differ(fname, file, sxp))
 473                         return 0;
 474 #endif
 475         } else {
 476                 if (preserve_times && mtime_differs(&sxp->st, file))
 477                         return 0;
 478                 if (perms_differ(file, sxp))
 479                         return 0;
 480                 if (ownership_differs(file, sxp))
 481                         return 0;
 482 #ifdef SUPPORT_ACLS
 483                 if (acls_differ(fname, file, sxp))
 484                         return 0;
 485 #endif
 486 #ifdef SUPPORT_XATTRS
 487                 if (xattrs_differ(fname, file, sxp))
 488                         return 0;
 489 #endif
 490         }
 491
 492         return 1;
 493 }
 494
 495 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 496              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 497              const char *xname)
 498 {
 499         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 500                 int keep_time = !preserve_times ? 0
 501                     : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
 502                     : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
 503                     : 1;
 504
 505                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 506                         iflags |= ITEM_REPORT_SIZE;
 507                 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
 508                         if (iflags & ITEM_LOCAL_CHANGE)
 509                                 iflags |= symlink_timeset_failed_flags;
 510                 } else if (keep_time
 511                  ? mtime_differs(&sxp->st, file)
 512                  : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
 513                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 514                         iflags |= ITEM_REPORT_TIME;
 515                 if (atimes_ndx && !S_ISDIR(file->mode) && !S_ISLNK(file->mode)
 516                  && !same_time(F_ATIME(file), 0, sxp->st.st_atime, 0))
 517                         iflags |= ITEM_REPORT_ATIME;
 518 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 519                 if (S_ISLNK(file->mode)) {
 520                         ;
 521                 } else
 522 #endif
 523                 if (preserve_perms) {
 524                         if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 525                                 iflags |= ITEM_REPORT_PERMS;
 526                 } else if (preserve_executability
 527                  && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 528                         iflags |= ITEM_REPORT_PERMS;
 529                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 530                         iflags |= ITEM_REPORT_OWNER;
 531                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP)
 532                     && sxp->st.st_gid != (gid_t)F_GROUP(file))
 533                         iflags |= ITEM_REPORT_GROUP;
 534 #ifdef SUPPORT_ACLS
 535                 if (preserve_acls && !S_ISLNK(file->mode)) {
 536                         if (!ACL_READY(*sxp))
 537                                 get_acl(fnamecmp, sxp);
 538                         if (set_acl(NULL, file, sxp, file->mode))
 539                                 iflags |= ITEM_REPORT_ACL;
 540                 }
 541 #endif
 542 #ifdef SUPPORT_XATTRS
 543                 if (preserve_xattrs) {
 544                         if (!XATTR_READY(*sxp))
 545                                 get_xattr(fnamecmp, sxp);
 546                         if (xattr_diff(file, sxp, 1))
 547                                 iflags |= ITEM_REPORT_XATTR;
 548                 }
 549 #endif
 550         } else {
 551 #ifdef SUPPORT_XATTRS
 552                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 553                         iflags |= ITEM_REPORT_XATTR;
 554 #endif
 555                 iflags |= ITEM_IS_NEW;
 556         }
 557
 558         iflags &= 0xffff;
 559         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
 560           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 561                 if (protocol_version >= 29) {
 562                         if (ndx >= 0)
 563                                 write_ndx(sock_f_out, ndx);
 564                         write_shortint(sock_f_out, iflags);
 565                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 566                                 write_byte(sock_f_out, fnamecmp_type);
 567                         if (iflags & ITEM_XNAME_FOLLOWS)
 568                                 write_vstring(sock_f_out, xname, strlen(xname));
 569 #ifdef SUPPORT_XATTRS
 570                         if (preserve_xattrs && do_xfers
 571                          && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
 572                                 int fd = iflags & ITEM_REPORT_XATTR
 573                                       && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
 574                                        ? sock_f_out : -1;
 575                                 send_xattr_request(NULL, file, fd);
 576                         }
 577 #endif
 578                 } else if (ndx >= 0) {
 579                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 580                         log_item(code, file, iflags, xname);
 581                 }
 582         }
 583 }
 584
 585
 586 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 587 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 588 {
 589         if (st->st_size != F_LENGTH(file))
 590                 return 0;
 591
 592         /* if always checksum is set then we use the checksum instead
 593            of the file time to determine whether to sync */
 594         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 595                 char sum[MAX_DIGEST_LEN];
 596                 file_checksum(fn, st, sum);
 597                 return memcmp(sum, F_SUM(file), flist_csum_len) == 0;
 598         }
 599
 600         if (size_only > 0)
 601                 return 1;
 602
 603         if (ignore_times)
 604                 return 0;
 605
 606         return !mtime_differs(st, file);
 607 }
 608
 609
 610 /*
 611  * set (initialize) the size entries in the per-file sum_struct
 612  * calculating dynamic block and checksum sizes.
 613  *
 614  * This is only called from generate_and_send_sums() but is a separate
 615  * function to encapsulate the logic.
 616  *
 617  * The block size is a rounded square root of file length.
 618  *
 619  * The checksum size is determined according to:
 620  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 621  * provided by Donovan Baarda which gives a probability of rsync
 622  * algorithm corrupting data and falling back using the whole md4
 623  * checksums.
 624  *
 625  * This might be made one of several selectable heuristics.
 626  */
 627 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 628 {
 629         int32 blength;
 630         int s2length;
 631         int64 l;
 632
 633         if (len < 0) {
 634                 /* The file length overflowed our int64 var, so we can't process this file. */
 635                 sum->count = -1; /* indicate overflow error */
 636                 return;
 637         }
 638
 639         if (block_size)
 640                 blength = block_size;
 641         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 642                 blength = BLOCK_SIZE;
 643         else {
 644                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
 645                 int32 c;
 646                 int cnt;
 647                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 648                 if (c < 0 || c >= max_blength)
 649                         blength = max_blength;
 650                 else {
 651                     blength = 0;
 652                     do {
 653                             blength |= c;
 654                             if (len < (int64)blength * blength)
 655                                     blength &= ~c;
 656                             c >>= 1;
 657                     } while (c >= 8);   /* round to multiple of 8 */
 658                     blength = MAX(blength, BLOCK_SIZE);
 659                 }
 660         }
 661
 662         if (protocol_version < 27) {
 663                 s2length = csum_length;
 664         } else if (csum_length == SUM_LENGTH) {
 665                 s2length = SUM_LENGTH;
 666         } else {
 667                 int32 c;
 668                 int b = BLOCKSUM_BIAS;
 669                 for (l = len; l >>= 1; b += 2) {}
 670                 for (c = blength; (c >>= 1) && b; b--) {}
 671                 /* add a bit, subtract rollsum, round up. */
 672                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 673                 s2length = MAX(s2length, csum_length);
 674                 s2length = MIN(s2length, SUM_LENGTH);
 675         }
 676
 677         sum->flength    = len;
 678         sum->blength    = blength;
 679         sum->s2length   = s2length;
 680         sum->remainder  = (int32)(len % blength);
 681         sum->count      = (int32)(l = (len / blength) + (sum->remainder != 0));
 682
 683         if ((int64)sum->count != l)
 684                 sum->count = -1;
 685
 686         if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
 687                 rprintf(FINFO,
 688                         "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
 689                         big_num(sum->count), (long)sum->remainder, (long)sum->blength,
 690                         sum->s2length, big_num(sum->flength));
 691         }
 692 }
 693
 694
 695 /*
 696  * Generate and send a stream of signatures/checksums that describe a buffer
 697  *
 698  * Generate approximately one checksum every block_len bytes.
 699  */
 700 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 701 {
 702         int32 i;
 703         struct map_struct *mapbuf;
 704         struct sum_struct sum;
 705         OFF_T offset = 0;
 706
 707         sum_sizes_sqroot(&sum, len);
 708         if (sum.count < 0)
 709                 return -1;
 710         write_sum_head(f_out, &sum);
 711
 712         if (append_mode > 0 && f_copy < 0)
 713                 return 0;
 714
 715         if (len > 0)
 716                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 717         else
 718                 mapbuf = NULL;
 719
 720         for (i = 0; i < sum.count; i++) {
 721                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 722                 char *map = map_ptr(mapbuf, offset, n1);
 723                 char sum2[SUM_LENGTH];
 724                 uint32 sum1;
 725
 726                 len -= n1;
 727                 offset += n1;
 728
 729                 if (f_copy >= 0) {
 730                         full_write(f_copy, map, n1);
 731                         if (append_mode > 0)
 732                                 continue;
 733                 }
 734
 735                 sum1 = get_checksum1(map, n1);
 736                 get_checksum2(map, n1, sum2);
 737
 738                 if (DEBUG_GTE(DELTASUM, 3)) {
 739                         rprintf(FINFO,
 740                                 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
 741                                 big_num(i), big_num(offset - n1), (long)n1,
 742                                 (unsigned long)sum1);
 743                 }
 744                 write_int(f_out, sum1);
 745                 write_buf(f_out, sum2, sum.s2length);
 746         }
 747
 748         if (mapbuf)
 749                 unmap_file(mapbuf);
 750
 751         return 0;
 752 }
 753
 754
 755 /* Try to find a filename in the same dir as "fname" with a similar name. */
 756 static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
 757 {
 758         int fname_len, fname_suf_len;
 759         const char *fname_suf, *fname = file->basename;
 760         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 761         int i, j;
 762         struct file_struct *lowest_fp = NULL;
 763
 764         fname_len = strlen(fname);
 765         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 766
 767         /* Try to find an exact size+mtime match first. */
 768         for (i = 0; i < fuzzy_basis; i++) {
 769                 struct file_list *dirlist = dirlist_array[i];
 770
 771                 if (!dirlist)
 772                         continue;
 773
 774                 for (j = 0; j < dirlist->used; j++) {
 775                         struct file_struct *fp = dirlist->files[j];
 776
 777                         if (!F_IS_ACTIVE(fp))
 778                                 continue;
 779
 780                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 781                                 continue;
 782
 783                         if (F_LENGTH(fp) == F_LENGTH(file) && same_time(fp->modtime, 0, file->modtime, 0)) {
 784                                 if (DEBUG_GTE(FUZZY, 2))
 785                                         rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
 786                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 787                                 return fp;
 788                         }
 789
 790                 }
 791         }
 792
 793         for (i = 0; i < fuzzy_basis; i++) {
 794                 struct file_list *dirlist = dirlist_array[i];
 795
 796                 if (!dirlist)
 797                         continue;
 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 (!F_IS_ACTIVE(fp))
 806                                 continue;
 807
 808                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 809                                 continue;
 810
 811                         name = fp->basename;
 812                         len = strlen(name);
 813                         suf = find_filename_suffix(name, len, &suf_len);
 814
 815                         dist = fuzzy_distance(name, len, fname, fname_len);
 816                         /* Add some extra weight to how well the suffixes match. */
 817                         dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
 818                         if (DEBUG_GTE(FUZZY, 2)) {
 819                                 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 820                                         f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
 821                         }
 822                         if (dist <= lowest_dist) {
 823                                 lowest_dist = dist;
 824                                 lowest_fp = fp;
 825                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 826                         }
 827                 }
 828         }
 829
 830         return lowest_fp;
 831 }
 832
 833 /* Copy a file found in our --copy-dest handling. */
 834 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 835 {
 836         char buf[MAXPATHLEN];
 837         const char *copy_to, *partialptr;
 838         int save_preserve_xattrs = preserve_xattrs;
 839         int ok, fd_w;
 840
 841         if (inplace) {
 842                 /* Let copy_file open the destination in place. */
 843                 fd_w = -1;
 844                 copy_to = dest;
 845         } else {
 846                 fd_w = open_tmpfile(buf, dest, file);
 847                 if (fd_w < 0)
 848                         return -1;
 849                 copy_to = buf;
 850         }
 851         cleanup_set(copy_to, NULL, NULL, -1, -1);
 852         if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
 853                 if (INFO_GTE(COPY, 1)) {
 854                         rsyserr(FINFO, errno, "copy_file %s => %s",
 855                                 full_fname(src), copy_to);
 856                 }
 857                 /* Try to clean up. */
 858                 unlink(copy_to);
 859                 cleanup_disable();
 860                 return -1;
 861         }
 862         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 863         preserve_xattrs = 0; /* xattrs were copied with file */
 864         ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 865         preserve_xattrs = save_preserve_xattrs;
 866         cleanup_disable();
 867         return ok ? 0 : -1;
 868 }
 869
 870 /* This is only called for regular files.  We return -2 if we've finished
 871  * handling the file, -1 if no dest-linking occurred, or a non-negative
 872  * value if we found an alternate basis file.  If we're called with the
 873  * find_exact_for_existing flag, the destination file already exists, so
 874  * we only try to find an exact alt-dest match.  In this case, the returns
 875  * are only -2 & -1 (both as above). */
 876 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 877                          char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
 878                          int itemizing, enum logcode code)
 879 {
 880         STRUCT_STAT real_st = sxp->st;
 881         int best_match = -1;
 882         int match_level = 0;
 883         int j = 0;
 884
 885         do {
 886                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 887                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 888                         continue;
 889                 if (match_level == 0) {
 890                         best_match = j;
 891                         match_level = 1;
 892                 }
 893                 if (!unchanged_file(cmpbuf, file, &sxp->st))
 894                         continue;
 895                 if (match_level == 1) {
 896                         best_match = j;
 897                         match_level = 2;
 898                 }
 899                 if (unchanged_attrs(cmpbuf, file, sxp)) {
 900                         best_match = j;
 901                         match_level = 3;
 902                         break;
 903                 }
 904                 free_stat_x(sxp);
 905         } while (basis_dir[++j] != NULL);
 906
 907         if (!match_level)
 908                 goto got_nothing_for_ya;
 909
 910         if (j != best_match) {
 911                 j = best_match;
 912                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 913                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
 914                         goto got_nothing_for_ya;
 915         }
 916
 917         if (match_level == 3 && alt_dest_type != COPY_DEST) {
 918                 if (find_exact_for_existing) {
 919                         if (alt_dest_type == LINK_DEST && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
 920                                 return -1;
 921                         if (do_unlink(fname) < 0 && errno != ENOENT)
 922                                 goto got_nothing_for_ya;
 923                 }
 924 #ifdef SUPPORT_HARD_LINKS
 925                 if (alt_dest_type == LINK_DEST) {
 926                         if (!hard_link_one(file, fname, cmpbuf, 1))
 927                                 goto try_a_copy;
 928                         if (atimes_ndx)
 929                                 set_file_attrs(fname, file, sxp, NULL, 0);
 930                         if (preserve_hard_links && F_IS_HLINKED(file))
 931                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
 932                         if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
 933                                 itemize(cmpbuf, file, ndx, 1, sxp,
 934                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 935                                         0, "");
 936                         }
 937                 } else
 938 #endif
 939                 {
 940                         if (itemizing)
 941                                 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
 942                 }
 943                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
 944                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 945                 return -2;
 946         }
 947
 948         if (find_exact_for_existing)
 949                 goto got_nothing_for_ya;
 950
 951         if (match_level >= 2) {
 952 #ifdef SUPPORT_HARD_LINKS
 953           try_a_copy: /* Copy the file locally. */
 954 #endif
 955                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
 956                         if (find_exact_for_existing) /* Can get here via hard-link failure */
 957                                 goto got_nothing_for_ya;
 958                         return -1;
 959                 }
 960                 if (itemizing)
 961                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
 962                 if (maybe_ATTRS_REPORT
 963                  && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
 964                   || (INFO_GTE(NAME, 2) && match_level == 3))) {
 965                         code = match_level == 3 ? FCLIENT : FINFO;
 966                         rprintf(code, "%s%s\n", fname,
 967                                 match_level == 3 ? " is uptodate" : "");
 968                 }
 969 #ifdef SUPPORT_HARD_LINKS
 970                 if (preserve_hard_links && F_IS_HLINKED(file))
 971                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
 972 #endif
 973                 return -2;
 974         }
 975
 976         return FNAMECMP_BASIS_DIR_LOW + j;
 977
 978 got_nothing_for_ya:
 979         sxp->st = real_st;
 980         return -1;
 981 }
 982
 983 /* This is only called for non-regular files.  We return -2 if we've finished
 984  * handling the file, or -1 if no dest-linking occurred, or a non-negative
 985  * value if we found an alternate basis file. */
 986 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 987                          char *cmpbuf, stat_x *sxp, int itemizing,
 988                          enum logcode code)
 989 {
 990         int best_match = -1;
 991         int match_level = 0;
 992         enum nonregtype type;
 993         uint32 *devp;
 994 #ifdef SUPPORT_LINKS
 995         char lnk[MAXPATHLEN];
 996         int len;
 997 #endif
 998         int j = 0;
 999
1000 #ifndef SUPPORT_LINKS
1001         if (S_ISLNK(file->mode))
1002                 return -1;
1003 #endif
1004         if (S_ISDIR(file->mode)) {
1005                 type = TYPE_DIR;
1006         } else if (IS_SPECIAL(file->mode))
1007                 type = TYPE_SPECIAL;
1008         else if (IS_DEVICE(file->mode))
1009                 type = TYPE_DEVICE;
1010 #ifdef SUPPORT_LINKS
1011         else if (S_ISLNK(file->mode))
1012                 type = TYPE_SYMLINK;
1013 #endif
1014         else {
1015                 rprintf(FERROR,
1016                         "internal: try_dests_non() called with invalid mode (%o)\n",
1017                         (int)file->mode);
1018                 exit_cleanup(RERR_UNSUPPORTED);
1019         }
1020
1021         do {
1022                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1023                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1024                         continue;
1025                 switch (type) {
1026                 case TYPE_DIR:
1027                         if (!S_ISDIR(sxp->st.st_mode))
1028                                 continue;
1029                         break;
1030                 case TYPE_SPECIAL:
1031                         if (!IS_SPECIAL(sxp->st.st_mode))
1032                                 continue;
1033                         break;
1034                 case TYPE_DEVICE:
1035                         if (!IS_DEVICE(sxp->st.st_mode))
1036                                 continue;
1037                         break;
1038                 case TYPE_SYMLINK:
1039 #ifdef SUPPORT_LINKS
1040                         if (!S_ISLNK(sxp->st.st_mode))
1041                                 continue;
1042                         break;
1043 #else
1044                         return -1;
1045 #endif
1046                 }
1047                 if (match_level < 1) {
1048                         match_level = 1;
1049                         best_match = j;
1050                 }
1051                 switch (type) {
1052                 case TYPE_DIR:
1053                 case TYPE_SPECIAL:
1054                         break;
1055                 case TYPE_DEVICE:
1056                         devp = F_RDEV_P(file);
1057                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1058                                 continue;
1059                         break;
1060                 case TYPE_SYMLINK:
1061 #ifdef SUPPORT_LINKS
1062                         if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1063                                 continue;
1064                         lnk[len] = '\0';
1065                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1066                                 continue;
1067                         break;
1068 #else
1069                         return -1;
1070 #endif
1071                 }
1072                 if (match_level < 2) {
1073                         match_level = 2;
1074                         best_match = j;
1075                 }
1076                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1077                         match_level = 3;
1078                         best_match = j;
1079                         break;
1080                 }
1081         } while (basis_dir[++j] != NULL);
1082
1083         if (!match_level)
1084                 return -1;
1085
1086         if (j != best_match) {
1087                 j = best_match;
1088                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1089                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1090                         return -1;
1091         }
1092
1093         if (match_level == 3) {
1094 #ifdef SUPPORT_HARD_LINKS
1095                 if (alt_dest_type == LINK_DEST
1096 #ifndef CAN_HARDLINK_SYMLINK
1097                  && !S_ISLNK(file->mode)
1098 #endif
1099 #ifndef CAN_HARDLINK_SPECIAL
1100                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1101 #endif
1102                  && !S_ISDIR(file->mode)) {
1103                         if (do_link(cmpbuf, fname) < 0) {
1104                                 rsyserr(FERROR_XFER, errno,
1105                                         "failed to hard-link %s with %s",
1106                                         cmpbuf, fname);
1107                                 return j;
1108                         }
1109                         if (preserve_hard_links && F_IS_HLINKED(file))
1110                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1111                 } else
1112 #endif
1113                         match_level = 2;
1114                 if (itemizing && stdout_format_has_i
1115                  && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1116                         int chg = alt_dest_type == COMPARE_DEST && type != TYPE_DIR ? 0
1117                             : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1118                         char *lp = match_level == 3 ? "" : NULL;
1119                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1120                 }
1121                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1122                         rprintf(FCLIENT, "%s%s is uptodate\n",
1123                                 fname, type == TYPE_DIR ? "/" : "");
1124                 }
1125                 return -2;
1126         }
1127
1128         return j;
1129 }
1130
1131 static void list_file_entry(struct file_struct *f)
1132 {
1133         char permbuf[PERMSTRING_SIZE];
1134         const char *mtime_str = timestring(f->modtime);
1135         int size_width = human_readable ? 14 : 11;
1136         int mtime_width = 1 + strlen(mtime_str);
1137         int atime_width = atimes_ndx ? mtime_width : 0;
1138
1139         if (!F_IS_ACTIVE(f)) {
1140                 /* this can happen if duplicate names were removed */
1141                 return;
1142         }
1143
1144         /* TODO: indicate '+' if the entry has an ACL. */
1145
1146         if (missing_args == 2 && f->mode == 0) {
1147                 rprintf(FINFO, "%-*s %s\n",
1148                         10 + 1 + size_width + mtime_width + atime_width, "*missing",
1149                         f_name(f, NULL));
1150         } else {
1151                 const char *atime_str = atimes_ndx && !S_ISDIR(f->mode) ? timestring(F_ATIME(f)) : "";
1152                 const char *arrow, *lnk;
1153
1154                 permstring(permbuf, f->mode);
1155
1156 #ifdef SUPPORT_LINKS
1157                 if (preserve_links && S_ISLNK(f->mode)) {
1158                         arrow = " -> ";
1159                         lnk = F_SYMLINK(f);
1160                 } else
1161 #endif
1162                         arrow = lnk = "";
1163
1164                 rprintf(FINFO, "%s %*s %s%*s %s%s%s\n",
1165                         permbuf, size_width, human_num(F_LENGTH(f)),
1166                         timestring(f->modtime), atime_width, atime_str,
1167                         f_name(f, NULL), arrow, lnk);
1168         }
1169 }
1170
1171 static int phase = 0;
1172 static int dflt_perms;
1173
1174 static int implied_dirs_are_missing;
1175 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1176 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1177 {
1178         return F_DEPTH(file) > F_DEPTH(subtree)
1179                 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1180 }
1181
1182 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1183  * make sure it exists, and has the right permissions/timestamp info.  For
1184  * all other non-regular files (symlinks, etc.) we create them here.  For
1185  * regular files that have changed, we try to find a basis file and then
1186  * start sending checksums.  The ndx is the file's unique index value.
1187  *
1188  * The fname parameter must point to a MAXPATHLEN buffer!  (e.g it gets
1189  * passed to delete_item(), which can use it during a recursive delete.)
1190  *
1191  * Note that f_out is set to -1 when doing final directory-permission and
1192  * modification-time repair. */
1193 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1194                            int itemizing, enum logcode code, int f_out)
1195 {
1196         static const char *parent_dirname = "";
1197         static struct file_struct *prior_dir_file = NULL;
1198         /* Missing dir not created due to --dry-run; will still be scanned. */
1199         static struct file_struct *dry_missing_dir = NULL;
1200         /* Missing dir whose contents are skipped altogether due to
1201          * --ignore-non-existing, daemon exclude, or mkdir failure. */
1202         static struct file_struct *skip_dir = NULL;
1203         static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
1204         static int need_fuzzy_dirlist = 0;
1205         struct file_struct *fuzzy_file = NULL;
1206         int fd = -1, f_copy = -1;
1207         stat_x sx, real_sx;
1208         STRUCT_STAT partial_st;
1209         struct file_struct *back_file = NULL;
1210         int statret, real_ret, stat_errno;
1211         char *fnamecmp, *partialptr, *backupptr = NULL;
1212         char fnamecmpbuf[MAXPATHLEN];
1213         uchar fnamecmp_type;
1214         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1215         int is_dir = !S_ISDIR(file->mode) ? 0
1216                    : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1217                    : 1;
1218
1219         if (DEBUG_GTE(GENR, 1))
1220                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1221
1222         if (list_only) {
1223                 if (is_dir < 0
1224                  || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1225                         return;
1226                 list_file_entry(file);
1227                 return;
1228         }
1229
1230         maybe_ATTRS_ACCURATE_TIME = always_checksum ? ATTRS_ACCURATE_TIME : 0;
1231
1232         if (skip_dir) {
1233                 if (is_below(file, skip_dir)) {
1234                         if (is_dir)
1235                                 file->flags |= FLAG_MISSING_DIR;
1236 #ifdef SUPPORT_HARD_LINKS
1237                         else if (F_IS_HLINKED(file))
1238                                 handle_skipped_hlink(file, itemizing, code, f_out);
1239 #endif
1240                         return;
1241                 }
1242                 skip_dir = NULL;
1243         }
1244
1245         init_stat_x(&sx);
1246         if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1247                 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1248                         if (is_dir < 0)
1249                                 return;
1250 #ifdef SUPPORT_HARD_LINKS
1251                         if (F_IS_HLINKED(file))
1252                                 handle_skipped_hlink(file, itemizing, code, f_out);
1253 #endif
1254                         rprintf(FERROR_XFER,
1255                                 "ERROR: daemon refused to receive %s \"%s\"\n",
1256                                 is_dir ? "directory" : "file", fname);
1257                         if (is_dir)
1258                                 goto skipping_dir_contents;
1259                         return;
1260                 }
1261         }
1262
1263         if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1264                 int i;
1265           parent_is_dry_missing:
1266                 for (i = 0; i < fuzzy_basis; i++) {
1267                         if (fuzzy_dirlist[i]) {
1268                                 flist_free(fuzzy_dirlist[i]);
1269                                 fuzzy_dirlist[i] = NULL;
1270                         }
1271                 }
1272                 parent_dirname = "";
1273                 statret = -1;
1274                 stat_errno = ENOENT;
1275         } else {
1276                 const char *dn = file->dirname ? file->dirname : ".";
1277                 dry_missing_dir = NULL;
1278                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1279                         /* Each parent dir must be in the file list or the flist data is bad.
1280                          * Optimization: most of the time the parent dir will be the last dir
1281                          * this function was asked to process in the file list. */
1282                         if (!inc_recurse
1283                          && (*dn != '.' || dn[1]) /* Avoid an issue with --relative and the "." dir. */
1284                          && (!prior_dir_file || strcmp(dn, f_name(prior_dir_file, NULL)) != 0)
1285                          && flist_find_name(cur_flist, dn, 1) < 0) {
1286                                 /* The --delete-missing-args option can actually put invalid entries into
1287                                  * the file list, so if that option was specified, we'll just complain about
1288                                  * it and allow it. */
1289                                 if (missing_args == 2 && file->mode == 0)
1290                                         rprintf(FERROR, "WARNING: parent dir is absent in the file list: %s\n", dn);
1291                                 else {
1292                                         rprintf(FERROR, "ABORTING due to invalid path from sender: %s/%s\n",
1293                                                 dn, file->basename);
1294                                         exit_cleanup(RERR_PROTOCOL);
1295                                 }
1296                         }
1297                         if (relative_paths && !implied_dirs
1298                          && do_stat(dn, &sx.st) < 0) {
1299                                 if (dry_run)
1300                                         goto parent_is_dry_missing;
1301                                 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1302                                         rsyserr(FERROR_XFER, errno,
1303                                                 "recv_generator: mkdir %s failed",
1304                                                 full_fname(dn));
1305                                 }
1306                         }
1307                         if (fuzzy_basis) {
1308                                 int i;
1309                                 for (i = 0; i < fuzzy_basis; i++) {
1310                                         if (fuzzy_dirlist[i]) {
1311                                                 flist_free(fuzzy_dirlist[i]);
1312                                                 fuzzy_dirlist[i] = NULL;
1313                                         }
1314                                 }
1315                                 need_fuzzy_dirlist = 1;
1316                         }
1317 #ifdef SUPPORT_ACLS
1318                         if (!preserve_perms)
1319                                 dflt_perms = default_perms_for_dir(dn);
1320 #endif
1321                 }
1322                 parent_dirname = dn;
1323
1324                 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1325                 stat_errno = errno;
1326         }
1327
1328         if (missing_args == 2 && file->mode == 0) {
1329                 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1330                         return;
1331                 if (statret == 0)
1332                         delete_item(fname, sx.st.st_mode, del_opts);
1333                 return;
1334         }
1335
1336         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1337                 if (is_dir) {
1338                         if (is_dir < 0)
1339                                 return;
1340                         skip_dir = file;
1341                         file->flags |= FLAG_MISSING_DIR;
1342                 }
1343 #ifdef SUPPORT_HARD_LINKS
1344                 else if (F_IS_HLINKED(file))
1345                         handle_skipped_hlink(file, itemizing, code, f_out);
1346 #endif
1347                 if (INFO_GTE(SKIP, 1)) {
1348                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1349                                 is_dir ? "directory" : "file", fname);
1350                 }
1351                 return;
1352         }
1353
1354         if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1355          && !am_root && sx.st.st_uid == our_uid)
1356                 del_opts |= DEL_NO_UID_WRITE;
1357
1358         if (ignore_existing > 0 && statret == 0
1359          && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1360                 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1361                         rprintf(FINFO, "%s exists\n", fname);
1362 #ifdef SUPPORT_HARD_LINKS
1363                 if (F_IS_HLINKED(file))
1364                         handle_skipped_hlink(file, itemizing, code, f_out);
1365 #endif
1366                 goto cleanup;
1367         }
1368
1369         fnamecmp = fname;
1370
1371         if (is_dir) {
1372                 mode_t added_perms;
1373                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1374                         goto cleanup;
1375                 if (am_root < 0) {
1376                         /* For --fake-super, the dir must be useable by the copying
1377                          * user, just like it would be for root. */
1378                         added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1379                 } else
1380                         added_perms = 0;
1381                 if (is_dir < 0) {
1382                         if (!(preserve_times & PRESERVE_DIR_TIMES))
1383                                 goto cleanup;
1384                         /* In inc_recurse mode we want to make sure any missing
1385                          * directories get created while we're still processing
1386                          * the parent dir (which allows us to touch the parent
1387                          * dir's mtime right away).  We will handle the dir in
1388                          * full later (right before we handle its contents). */
1389                         if (statret == 0
1390                          && (S_ISDIR(sx.st.st_mode)
1391                           || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1392                                 goto cleanup; /* Any errors get reported later. */
1393                         if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1394                                 file->flags |= FLAG_DIR_CREATED;
1395                         goto cleanup;
1396                 }
1397                 /* The file to be received is a directory, so we need
1398                  * to prepare appropriately.  If there is already a
1399                  * file of that name and it is *not* a directory, then
1400                  * we need to delete it.  If it doesn't exist, then
1401                  * (perhaps recursively) create it. */
1402                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1403                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1404                                 goto skipping_dir_contents;
1405                         statret = -1;
1406                 }
1407                 if (dry_run && statret != 0) {
1408                         if (!dry_missing_dir)
1409                                 dry_missing_dir = file;
1410                         file->flags |= FLAG_MISSING_DIR;
1411                 }
1412                 init_stat_x(&real_sx);
1413                 real_sx.st = sx.st;
1414                 real_ret = statret;
1415                 if (file->flags & FLAG_DIR_CREATED)
1416                         statret = -1;
1417                 if (!preserve_perms) { /* See comment in non-dir code below. */
1418                         file->mode = dest_mode(file->mode, sx.st.st_mode,
1419                                                dflt_perms, statret == 0);
1420                 }
1421                 if (statret != 0 && basis_dir[0] != NULL) {
1422                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1423                                               itemizing, code);
1424                         if (j == -2) {
1425                                 itemizing = 0;
1426                                 code = FNONE;
1427                                 statret = 1;
1428                         } else if (j >= 0) {
1429                                 statret = 1;
1430                                 fnamecmp = fnamecmpbuf;
1431                         }
1432                 }
1433                 if (itemizing && f_out != -1) {
1434                         itemize(fnamecmp, file, ndx, statret, &sx,
1435                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1436                 }
1437                 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1438                         if (!relative_paths || errno != ENOENT
1439                          || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1440                          || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1441                                 rsyserr(FERROR_XFER, errno,
1442                                         "recv_generator: mkdir %s failed",
1443                                         full_fname(fname));
1444                           skipping_dir_contents:
1445                                 rprintf(FERROR,
1446                                     "*** Skipping any contents from this failed directory ***\n");
1447                                 skip_dir = file;
1448                                 file->flags |= FLAG_MISSING_DIR;
1449                                 goto cleanup;
1450                         }
1451                 }
1452
1453 #ifdef SUPPORT_XATTRS
1454                 if (preserve_xattrs && statret == 1)
1455                         copy_xattrs(fnamecmpbuf, fname);
1456 #endif
1457                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1458                     && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1459                         rprintf(code, "%s/\n", fname);
1460
1461                 /* We need to ensure that the dirs in the transfer have both
1462                  * readable and writable permissions during the time we are
1463                  * putting files within them.  This is then restored to the
1464                  * former permissions after the transfer is done. */
1465 #ifdef HAVE_CHMOD
1466                 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1467                         mode_t mode = file->mode | S_IRWXU;
1468                         if (do_chmod(fname, mode) < 0) {
1469                                 rsyserr(FERROR_XFER, errno,
1470                                         "failed to modify permissions on %s",
1471                                         full_fname(fname));
1472                         }
1473                         need_retouch_dir_perms = 1;
1474                 }
1475 #endif
1476
1477                 if (real_ret != 0 && one_file_system)
1478                         real_sx.st.st_dev = filesystem_dev;
1479                 if (inc_recurse) {
1480                         if (one_file_system) {
1481                                 uint32 *devp = F_DIR_DEV_P(file);
1482                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1483                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1484                         }
1485                 }
1486                 else if (delete_during && f_out != -1 && !phase
1487                     && !(file->flags & FLAG_MISSING_DIR)) {
1488                         if (file->flags & FLAG_CONTENT_DIR)
1489                                 delete_in_dir(fname, file, &real_sx.st.st_dev);
1490                         else
1491                                 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1492                 }
1493                 prior_dir_file = file;
1494                 goto cleanup;
1495         }
1496
1497         /* If we're not preserving permissions, change the file-list's
1498          * mode based on the local permissions and some heuristics. */
1499         if (!preserve_perms) {
1500                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1501                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms,
1502                                        exists);
1503         }
1504
1505 #ifdef SUPPORT_HARD_LINKS
1506         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1507          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1508                 goto cleanup;
1509 #endif
1510
1511         if (preserve_links && S_ISLNK(file->mode)) {
1512 #ifdef SUPPORT_LINKS
1513                 const char *sl = F_SYMLINK(file);
1514                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1515                         if (INFO_GTE(NAME, 1)) {
1516                                 if (solo_file) {
1517                                         /* fname contains the destination path, but we
1518                                          * want to report the source path. */
1519                                         fname = f_name(file, NULL);
1520                                 }
1521                                 rprintf(FINFO,
1522                                         "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1523                                         fname, sl);
1524                         }
1525                         goto cleanup;
1526                 }
1527                 if (statret == 0) {
1528                         char lnk[MAXPATHLEN];
1529                         int len;
1530
1531                         if (S_ISLNK(sx.st.st_mode)
1532                          && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1533                          && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1534                                 /* The link is pointing to the right place. */
1535                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1536                                 if (itemizing)
1537                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1538 #ifdef SUPPORT_HARD_LINKS
1539                                 if (preserve_hard_links && F_IS_HLINKED(file))
1540                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1541 #endif
1542                                 if (remove_source_files == 1)
1543                                         goto return_with_success;
1544                                 goto cleanup;
1545                         }
1546                 } else if (basis_dir[0] != NULL) {
1547                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1548                                               itemizing, code);
1549                         if (j == -2) {
1550 #ifndef CAN_HARDLINK_SYMLINK
1551                                 if (alt_dest_type == LINK_DEST) {
1552                                         /* Resort to --copy-dest behavior. */
1553                                 } else
1554 #endif
1555                                 if (alt_dest_type != COPY_DEST)
1556                                         goto cleanup;
1557                                 itemizing = 0;
1558                                 code = FNONE;
1559                         } else if (j >= 0) {
1560                                 statret = 1;
1561                                 fnamecmp = fnamecmpbuf;
1562                         }
1563                 }
1564                 if (atomic_create(file, fname, sl, NULL, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1565                         set_file_attrs(fname, file, NULL, NULL, 0);
1566                         if (itemizing) {
1567                                 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1568                                         statret = -1;
1569                                 itemize(fnamecmp, file, ndx, statret, &sx,
1570                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1571                         }
1572                         if (code != FNONE && INFO_GTE(NAME, 1))
1573                                 rprintf(code, "%s -> %s\n", fname, sl);
1574 #ifdef SUPPORT_HARD_LINKS
1575                         if (preserve_hard_links && F_IS_HLINKED(file))
1576                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1577 #endif
1578                         /* This does not check remove_source_files == 1
1579                          * because this is one of the items that the old
1580                          * --remove-sent-files option would remove. */
1581                         if (remove_source_files)
1582                                 goto return_with_success;
1583                 }
1584 #endif
1585                 goto cleanup;
1586         }
1587
1588         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1589          || (preserve_specials && IS_SPECIAL(file->mode))) {
1590                 dev_t rdev;
1591                 int del_for_flag = 0;
1592                 if (IS_DEVICE(file->mode)) {
1593                         uint32 *devp = F_RDEV_P(file);
1594                         rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1595                 } else
1596                         rdev = 0;
1597                 if (statret == 0) {
1598                         if (IS_DEVICE(file->mode)) {
1599                                 if (!IS_DEVICE(sx.st.st_mode))
1600                                         statret = -1;
1601                                 del_for_flag = DEL_FOR_DEVICE;
1602                         } else {
1603                                 if (!IS_SPECIAL(sx.st.st_mode))
1604                                         statret = -1;
1605                                 del_for_flag = DEL_FOR_SPECIAL;
1606                         }
1607                         if (statret == 0
1608                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1609                          && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1610                                 /* The device or special file is identical. */
1611                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1612                                 if (itemizing)
1613                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1614 #ifdef SUPPORT_HARD_LINKS
1615                                 if (preserve_hard_links && F_IS_HLINKED(file))
1616                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1617 #endif
1618                                 if (remove_source_files == 1)
1619                                         goto return_with_success;
1620                                 goto cleanup;
1621                         }
1622                 } else if (basis_dir[0] != NULL) {
1623                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx,
1624                                               itemizing, code);
1625                         if (j == -2) {
1626 #ifndef CAN_HARDLINK_SPECIAL
1627                                 if (alt_dest_type == LINK_DEST) {
1628                                         /* Resort to --copy-dest behavior. */
1629                                 } else
1630 #endif
1631                                 if (alt_dest_type != COPY_DEST)
1632                                         goto cleanup;
1633                                 itemizing = 0;
1634                                 code = FNONE;
1635                         } else if (j >= 0) {
1636                                 statret = 1;
1637                                 fnamecmp = fnamecmpbuf;
1638                         }
1639                 }
1640                 if (DEBUG_GTE(GENR, 1)) {
1641                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1642                                 fname, (int)file->mode,
1643                                 (long)major(rdev), (long)minor(rdev));
1644                 }
1645                 if (atomic_create(file, fname, NULL, NULL, rdev, &sx, del_for_flag)) {
1646                         set_file_attrs(fname, file, NULL, NULL, 0);
1647                         if (itemizing) {
1648                                 itemize(fnamecmp, file, ndx, statret, &sx,
1649                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1650                         }
1651                         if (code != FNONE && INFO_GTE(NAME, 1))
1652                                 rprintf(code, "%s\n", fname);
1653 #ifdef SUPPORT_HARD_LINKS
1654                         if (preserve_hard_links && F_IS_HLINKED(file))
1655                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1656 #endif
1657                         if (remove_source_files == 1)
1658                                 goto return_with_success;
1659                 }
1660                 goto cleanup;
1661         }
1662
1663         if (!S_ISREG(file->mode)) {
1664                 if (solo_file)
1665                         fname = f_name(file, NULL);
1666                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1667                 goto cleanup;
1668         }
1669
1670         if (max_size >= 0 && F_LENGTH(file) > max_size) {
1671                 if (INFO_GTE(SKIP, 1)) {
1672                         if (solo_file)
1673                                 fname = f_name(file, NULL);
1674                         rprintf(FINFO, "%s is over max-size\n", fname);
1675                 }
1676                 goto cleanup;
1677         }
1678         if (min_size >= 0 && F_LENGTH(file) < min_size) {
1679                 if (INFO_GTE(SKIP, 1)) {
1680                         if (solo_file)
1681                                 fname = f_name(file, NULL);
1682                         rprintf(FINFO, "%s is under min-size\n", fname);
1683                 }
1684                 goto cleanup;
1685         }
1686
1687         if (update_only > 0 && statret == 0 && file->modtime - sx.st.st_mtime <= modify_window) {
1688                 if (INFO_GTE(SKIP, 1))
1689                         rprintf(FINFO, "%s is newer\n", fname);
1690 #ifdef SUPPORT_HARD_LINKS
1691                 if (F_IS_HLINKED(file))
1692                         handle_skipped_hlink(file, itemizing, code, f_out);
1693 #endif
1694                 goto cleanup;
1695         }
1696
1697         fnamecmp_type = FNAMECMP_FNAME;
1698
1699         if (statret == 0 && !(S_ISREG(sx.st.st_mode) || (write_devices && IS_DEVICE(sx.st.st_mode)))) {
1700                 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1701                         goto cleanup;
1702                 statret = -1;
1703                 stat_errno = ENOENT;
1704         }
1705
1706         if (basis_dir[0] != NULL && (statret != 0 || alt_dest_type != COPY_DEST)) {
1707                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx,
1708                                       statret == 0, itemizing, code);
1709                 if (j == -2) {
1710                         if (remove_source_files == 1)
1711                                 goto return_with_success;
1712                         goto cleanup;
1713                 }
1714                 if (j >= 0) {
1715                         fnamecmp = fnamecmpbuf;
1716                         fnamecmp_type = j;
1717                         statret = 0;
1718                 }
1719         }
1720
1721         init_stat_x(&real_sx);
1722         real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
1723         real_ret = statret;
1724
1725         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1726             && link_stat(partialptr, &partial_st, 0) == 0
1727             && S_ISREG(partial_st.st_mode)) {
1728                 if (statret != 0)
1729                         goto prepare_to_open;
1730         } else
1731                 partialptr = NULL;
1732
1733         if (statret != 0 && fuzzy_basis) {
1734                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1735                         const char *dn = file->dirname ? file->dirname : ".";
1736                         int i;
1737                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1738                         for (i = 0; i < fuzzy_basis; i++) {
1739                                 if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
1740                                         continue;
1741                                 fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES | GDL_PERHAPS_DIR);
1742                                 if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
1743                                         flist_free(fuzzy_dirlist[i]);
1744                                         fuzzy_dirlist[i] = NULL;
1745                                 }
1746                         }
1747                         need_fuzzy_dirlist = 0;
1748                 }
1749
1750                 /* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
1751                 fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
1752                 if (fuzzy_file) {
1753                         f_name(fuzzy_file, fnamecmpbuf);
1754                         if (DEBUG_GTE(FUZZY, 1)) {
1755                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1756                                         fname, fnamecmpbuf);
1757                         }
1758                         sx.st.st_size = F_LENGTH(fuzzy_file);
1759                         statret = 0;
1760                         fnamecmp = fnamecmpbuf;
1761                 }
1762         }
1763
1764         if (statret != 0) {
1765 #ifdef SUPPORT_HARD_LINKS
1766                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1767                         cur_flist->in_progress++;
1768                         goto cleanup;
1769                 }
1770 #endif
1771                 if (stat_errno == ENOENT)
1772                         goto notify_others;
1773                 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1774                         full_fname(fname));
1775                 goto cleanup;
1776         }
1777
1778         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1779                 ;
1780         else if (fnamecmp_type >= FNAMECMP_FUZZY)
1781                 ;
1782         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1783                 if (partialptr) {
1784                         do_unlink(partialptr);
1785                         handle_partial_dir(partialptr, PDIR_DELETE);
1786                 }
1787                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT | maybe_ATTRS_ACCURATE_TIME);
1788                 if (itemizing)
1789                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1790 #ifdef SUPPORT_HARD_LINKS
1791                 if (preserve_hard_links && F_IS_HLINKED(file))
1792                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1793 #endif
1794                 if (remove_source_files != 1)
1795                         goto cleanup;
1796           return_with_success:
1797                 if (!dry_run)
1798                         send_msg_int(MSG_SUCCESS, ndx);
1799                 goto cleanup;
1800         }
1801
1802         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1803 #ifdef SUPPORT_HARD_LINKS
1804                 if (F_IS_HLINKED(file))
1805                         handle_skipped_hlink(file, itemizing, code, f_out);
1806 #endif
1807                 goto cleanup;
1808         }
1809
1810   prepare_to_open:
1811         if (partialptr) {
1812                 sx.st = partial_st;
1813                 fnamecmp = partialptr;
1814                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1815                 statret = 0;
1816         }
1817
1818         if (!do_xfers)
1819                 goto notify_others;
1820
1821         if (read_batch || whole_file) {
1822                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1823                         if (!(backupptr = get_backup_name(fname)))
1824                                 goto cleanup;
1825                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1826                                 goto pretend_missing;
1827                         if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1828                                 unmake_file(back_file);
1829                                 back_file = NULL;
1830                                 goto cleanup;
1831                         }
1832                 }
1833                 goto notify_others;
1834         }
1835
1836         if (fuzzy_dirlist[0]) {
1837                 int j = flist_find(fuzzy_dirlist[0], file);
1838                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1839                         fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
1840         }
1841
1842         /* open the file */
1843         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1844                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1845                         full_fname(fnamecmp));
1846           pretend_missing:
1847                 /* pretend the file didn't exist */
1848 #ifdef SUPPORT_HARD_LINKS
1849                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1850                         cur_flist->in_progress++;
1851                         goto cleanup;
1852                 }
1853 #endif
1854                 statret = real_ret = -1;
1855                 goto notify_others;
1856         }
1857
1858         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1859                 if (!(backupptr = get_backup_name(fname))) {
1860                         close(fd);
1861                         goto cleanup;
1862                 }
1863                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1864                         close(fd);
1865                         goto pretend_missing;
1866                 }
1867                 if (robust_unlink(backupptr) && errno != ENOENT) {
1868                         rsyserr(FERROR_XFER, errno, "unlink %s",
1869                                 full_fname(backupptr));
1870                         unmake_file(back_file);
1871                         back_file = NULL;
1872                         close(fd);
1873                         goto cleanup;
1874                 }
1875                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1876                         rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1877                         unmake_file(back_file);
1878                         back_file = NULL;
1879                         close(fd);
1880                         goto cleanup;
1881                 }
1882                 fnamecmp_type = FNAMECMP_BACKUP;
1883         }
1884
1885         if (DEBUG_GTE(DELTASUM, 3)) {
1886                 rprintf(FINFO, "gen mapped %s of size %s\n",
1887                         fnamecmp, big_num(sx.st.st_size));
1888         }
1889
1890         if (DEBUG_GTE(DELTASUM, 2))
1891                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1892
1893   notify_others:
1894         if (remove_source_files && !delay_updates && !phase && !dry_run)
1895                 increment_active_files(ndx, itemizing, code);
1896         if (inc_recurse && (!dry_run || write_batch < 0))
1897                 cur_flist->in_progress++;
1898 #ifdef SUPPORT_HARD_LINKS
1899         if (preserve_hard_links && F_IS_HLINKED(file))
1900                 file->flags |= FLAG_FILE_SENT;
1901 #endif
1902         write_ndx(f_out, ndx);
1903         if (itemizing) {
1904                 int iflags = ITEM_TRANSFER;
1905                 if (always_checksum > 0)
1906                         iflags |= ITEM_REPORT_CHANGE;
1907                 if (fnamecmp_type != FNAMECMP_FNAME)
1908                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1909                 if (fnamecmp_type >= FNAMECMP_FUZZY)
1910                         iflags |= ITEM_XNAME_FOLLOWS;
1911                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1912                         fuzzy_file ? fuzzy_file->basename : NULL);
1913                 free_stat_x(&real_sx);
1914         }
1915
1916         if (!do_xfers) {
1917 #ifdef SUPPORT_HARD_LINKS
1918                 if (preserve_hard_links && F_IS_HLINKED(file))
1919                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1920 #endif
1921                 goto cleanup;
1922         }
1923         if (read_batch)
1924                 goto cleanup;
1925
1926         if (statret != 0 || whole_file)
1927                 write_sum_head(f_out, NULL);
1928         else if (sx.st.st_size <= 0) {
1929                 write_sum_head(f_out, NULL);
1930                 close(fd);
1931         } else {
1932                 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1933                         rprintf(FWARNING,
1934                             "WARNING: file is too large for checksum sending: %s\n",
1935                             fnamecmp);
1936                         write_sum_head(f_out, NULL);
1937                 }
1938                 close(fd);
1939         }
1940
1941   cleanup:
1942         if (back_file) {
1943                 int save_preserve_xattrs = preserve_xattrs;
1944                 if (f_copy >= 0)
1945                         close(f_copy);
1946 #ifdef SUPPORT_XATTRS
1947                 if (preserve_xattrs) {
1948                         copy_xattrs(fname, backupptr);
1949                         preserve_xattrs = 0;
1950                 }
1951 #endif
1952                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1953                 preserve_xattrs = save_preserve_xattrs;
1954                 if (INFO_GTE(BACKUP, 1)) {
1955                         rprintf(FINFO, "backed up %s to %s\n",
1956                                 fname, backupptr);
1957                 }
1958                 unmake_file(back_file);
1959         }
1960
1961         free_stat_x(&sx);
1962 }
1963
1964 /* If we are replacing an existing hard link, symlink, device, or special file,
1965  * create a temp-name item and rename it into place.  A symlimk specifies slnk,
1966  * a hard link specifies hlnk, otherwise we create a device based on rdev.
1967  * Specify 0 for the del_for_flag if there is not a file to replace.  This
1968  * returns 1 on success and 0 on failure. */
1969 int atomic_create(struct file_struct *file, char *fname, const char *slnk, const char *hlnk,
1970                   dev_t rdev, stat_x *sxp, int del_for_flag)
1971 {
1972         char tmpname[MAXPATHLEN];
1973         const char *create_name;
1974         int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1975
1976         if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1977                 skip_atomic = 1;
1978         else
1979                 skip_atomic = 0;
1980
1981         if (del_for_flag) {
1982                 if (make_backups > 0 && !dir_in_the_way) {
1983                         if (!make_backup(fname, skip_atomic))
1984                                 return 0;
1985                 } else if (skip_atomic) {
1986                         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1987                         if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1988                                 return 0;
1989                 }
1990         }
1991
1992         create_name = skip_atomic ? fname : tmpname;
1993
1994         if (slnk) {
1995 #ifdef SUPPORT_LINKS
1996                 if (do_symlink(slnk, create_name) < 0) {
1997                         rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1998                                 full_fname(create_name), slnk);
1999                         return 0;
2000                 }
2001 #else
2002                 return 0;
2003 #endif
2004         } else if (hlnk) {
2005 #ifdef SUPPORT_HARD_LINKS
2006                 if (!hard_link_one(file, create_name, hlnk, 0))
2007                         return 0;
2008 #else
2009                 return 0;
2010 #endif
2011         } else {
2012                 if (do_mknod(create_name, file->mode, rdev) < 0) {
2013                         rsyserr(FERROR_XFER, errno, "mknod %s failed",
2014                                 full_fname(create_name));
2015                         return 0;
2016                 }
2017         }
2018
2019         if (!skip_atomic) {
2020                 if (do_rename(tmpname, fname) < 0) {
2021                         rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
2022                                 full_fname(tmpname), full_fname(fname));
2023                         do_unlink(tmpname);
2024                         return 0;
2025                 }
2026         }
2027
2028         return 1;
2029 }
2030
2031 #ifdef SUPPORT_HARD_LINKS
2032 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2033                                  enum logcode code, int f_out)
2034 {
2035         char fbuf[MAXPATHLEN];
2036         int new_last_ndx;
2037         struct file_list *save_flist = cur_flist;
2038
2039         /* If we skip the last item in a chain of links and there was a
2040          * prior non-skipped hard-link waiting to finish, finish it now. */
2041         if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2042                 return;
2043
2044         file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2045         cur_flist->in_progress--; /* undo prior increment */
2046         f_name(file, fbuf);
2047         recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2048
2049         cur_flist = save_flist;
2050 }
2051 #endif
2052
2053 static void touch_up_dirs(struct file_list *flist, int ndx)
2054 {
2055         static int counter = 0;
2056         struct file_struct *file;
2057         char *fname;
2058         BOOL fix_dir_perms;
2059         int i, start, end;
2060
2061         if (ndx < 0) {
2062                 start = 0;
2063                 end = flist->used - 1;
2064         } else
2065                 start = end = ndx;
2066
2067         /* Fix any directory permissions that were modified during the
2068          * transfer and/or re-set any tweaked modified-time values. */
2069         for (i = start; i <= end; i++, counter++) {
2070                 file = flist->files[i];
2071                 if (!F_IS_ACTIVE(file))
2072                         continue;
2073                 if (!S_ISDIR(file->mode)
2074                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2075                         continue;
2076                 if (DEBUG_GTE(TIME, 2)) {
2077                         fname = f_name(file, NULL);
2078                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2079                                 NS(fname), i);
2080                 }
2081                 /* Be sure not to retouch permissions with --fake-super. */
2082                 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2083                 if (file->flags & FLAG_MISSING_DIR || !(need_retouch_dir_times || fix_dir_perms))
2084                         continue;
2085                 fname = f_name(file, NULL);
2086                 if (fix_dir_perms)
2087                         do_chmod(fname, file->mode);
2088                 if (need_retouch_dir_times) {
2089                         STRUCT_STAT st;
2090                         if (link_stat(fname, &st, 0) == 0 && mtime_differs(&st, file)) {
2091                                 st.st_mtime = file->modtime;
2092 #ifdef ST_MTIME_NSEC
2093                                 st.ST_MTIME_NSEC = F_MOD_NSEC_or_0(file);
2094 #endif
2095                                 set_times(fname, &st);
2096                         }
2097                 }
2098                 if (counter >= loopchk_limit) {
2099                         if (allowed_lull)
2100                                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2101                         else
2102                                 maybe_flush_socket(0);
2103                         counter = 0;
2104                 }
2105         }
2106 }
2107
2108 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2109 {
2110         struct file_struct *file;
2111         struct file_list *flist;
2112         char fbuf[MAXPATHLEN];
2113         int ndx;
2114
2115         while (1) {
2116 #ifdef SUPPORT_HARD_LINKS
2117                 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2118                         int send_failed = (ndx == -2);
2119                         if (send_failed)
2120                                 ndx = get_hlink_num();
2121                         flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2122                         file = flist->files[ndx - flist->ndx_start];
2123                         assert(file->flags & FLAG_HLINKED);
2124                         if (send_failed)
2125                                 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2126                         else
2127                                 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2128                         flist->in_progress--;
2129                         continue;
2130                 }
2131 #endif
2132
2133                 if (check_redo && (ndx = get_redo_num()) != -1) {
2134                         OFF_T save_max_size = max_size;
2135                         OFF_T save_min_size = min_size;
2136                         csum_length = SUM_LENGTH;
2137                         max_size = -1;
2138                         min_size = -1;
2139                         ignore_existing = -ignore_existing;
2140                         ignore_non_existing = -ignore_non_existing;
2141                         update_only = -update_only;
2142                         always_checksum = -always_checksum;
2143                         size_only = -size_only;
2144                         append_mode = -append_mode;
2145                         make_backups = -make_backups; /* avoid dup backup w/inplace */
2146                         ignore_times++;
2147
2148                         flist = cur_flist;
2149                         cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2150
2151                         file = cur_flist->files[ndx - cur_flist->ndx_start];
2152                         if (solo_file)
2153                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2154                         else
2155                                 f_name(file, fbuf);
2156                         recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2157                         cur_flist->to_redo--;
2158
2159                         cur_flist = flist;
2160
2161                         csum_length = SHORT_SUM_LENGTH;
2162                         max_size = save_max_size;
2163                         min_size = save_min_size;
2164                         ignore_existing = -ignore_existing;
2165                         ignore_non_existing = -ignore_non_existing;
2166                         update_only = -update_only;
2167                         always_checksum = -always_checksum;
2168                         size_only = -size_only;
2169                         append_mode = -append_mode;
2170                         make_backups = -make_backups;
2171                         ignore_times--;
2172                         continue;
2173                 }
2174
2175                 if (cur_flist == first_flist)
2176                         break;
2177
2178                 /* We only get here if inc_recurse is enabled. */
2179                 if (first_flist->in_progress || first_flist->to_redo)
2180                         break;
2181
2182                 write_ndx(sock_f_out, NDX_DONE);
2183                 if (!read_batch && !flist_eof) {
2184                         int old_total = 0;
2185                         for (flist = first_flist; flist != cur_flist; flist = flist->next)
2186                                 old_total += flist->used;
2187                         maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2188                 }
2189
2190                 if (delete_during == 2 || !dir_tweaking) {
2191                         /* Skip directory touch-up. */
2192                 } else if (first_flist->parent_ndx >= 0)
2193                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
2194
2195                 flist_free(first_flist); /* updates first_flist */
2196         }
2197 }
2198
2199 void generate_files(int f_out, const char *local_name)
2200 {
2201         int i, ndx, next_loopchk = 0;
2202         char fbuf[MAXPATHLEN];
2203         int itemizing;
2204         enum logcode code;
2205         int save_info_flist = info_levels[INFO_FLIST];
2206         int save_info_progress = info_levels[INFO_PROGRESS];
2207
2208         if (protocol_version >= 29) {
2209                 itemizing = 1;
2210                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2211                 code = logfile_format_has_i ? FNONE : FLOG;
2212         } else if (am_daemon) {
2213                 itemizing = logfile_format_has_i && do_xfers;
2214                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2215                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2216         } else if (!am_server) {
2217                 itemizing = stdout_format_has_i;
2218                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2219                 code = itemizing ? FNONE : FINFO;
2220         } else {
2221                 itemizing = 0;
2222                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2223                 code = FINFO;
2224         }
2225         solo_file = local_name;
2226         dir_tweaking = !(list_only || solo_file || dry_run);
2227         need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2228         loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2229         symlink_timeset_failed_flags = ITEM_REPORT_TIME
2230             | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2231         implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2232
2233         if (DEBUG_GTE(GENR, 1))
2234                 rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
2235
2236         if (delete_before && !solo_file && cur_flist->used > 0)
2237                 do_delete_pass();
2238         if (delete_during == 2) {
2239                 deldelay_size = BIGPATHBUFLEN * 4;
2240                 deldelay_buf = new_array(char, deldelay_size);
2241                 if (!deldelay_buf)
2242                         out_of_memory("delete-delay");
2243         }
2244         info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2245
2246         if (append_mode > 0 || whole_file < 0)
2247                 whole_file = 0;
2248         if (DEBUG_GTE(FLIST, 1)) {
2249                 rprintf(FINFO, "delta-transmission %s\n",
2250                         whole_file
2251                         ? "disabled for local transfer or --whole-file"
2252                         : "enabled");
2253         }
2254
2255         dflt_perms = (ACCESSPERMS & ~orig_umask);
2256
2257         do {
2258 #ifdef SUPPORT_HARD_LINKS
2259                 if (preserve_hard_links && inc_recurse) {
2260                         while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2261                                 wait_for_receiver();
2262                 }
2263 #endif
2264
2265                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2266                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2267                         if (solo_file)
2268                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2269                         else
2270                                 f_name(fp, fbuf);
2271                         ndx = cur_flist->ndx_start - 1;
2272                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2273                         if (delete_during && dry_run < 2 && !list_only
2274                          && !(fp->flags & FLAG_MISSING_DIR)) {
2275                                 if (fp->flags & FLAG_CONTENT_DIR) {
2276                                         dev_t dirdev;
2277                                         if (one_file_system) {
2278                                                 uint32 *devp = F_DIR_DEV_P(fp);
2279                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2280                                         } else
2281                                                 dirdev = MAKEDEV(0, 0);
2282                                         delete_in_dir(fbuf, fp, &dirdev);
2283                                 } else
2284                                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2285                         }
2286                 }
2287                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2288                         struct file_struct *file = cur_flist->sorted[i];
2289
2290                         if (!F_IS_ACTIVE(file))
2291                                 continue;
2292
2293                         if (unsort_ndx)
2294                                 ndx = F_NDX(file);
2295                         else
2296                                 ndx = i + cur_flist->ndx_start;
2297
2298                         if (solo_file)
2299                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2300                         else
2301                                 f_name(file, fbuf);
2302                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2303
2304                         check_for_finished_files(itemizing, code, 0);
2305
2306                         if (i + cur_flist->ndx_start >= next_loopchk) {
2307                                 if (allowed_lull)
2308                                         maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2309                                 else
2310                                         maybe_flush_socket(0);
2311                                 next_loopchk += loopchk_limit;
2312                         }
2313                 }
2314
2315                 if (!inc_recurse) {
2316                         write_ndx(f_out, NDX_DONE);
2317                         break;
2318                 }
2319
2320                 while (1) {
2321                         check_for_finished_files(itemizing, code, 1);
2322                         if (cur_flist->next || flist_eof)
2323                                 break;
2324                         wait_for_receiver();
2325                 }
2326         } while ((cur_flist = cur_flist->next) != NULL);
2327
2328         if (delete_during)
2329                 delete_in_dir(NULL, NULL, &dev_zero);
2330         phase++;
2331         if (DEBUG_GTE(GENR, 1))
2332                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2333
2334         while (1) {
2335                 check_for_finished_files(itemizing, code, 1);
2336                 if (msgdone_cnt)
2337                         break;
2338                 wait_for_receiver();
2339         }
2340
2341         phase++;
2342         if (DEBUG_GTE(GENR, 1))
2343                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2344
2345         write_ndx(f_out, NDX_DONE);
2346
2347         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2348         if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2349                 write_ndx(f_out, NDX_DONE);
2350
2351         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2352                 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2353                         write_del_stats(f_out);
2354                 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2355                         write_ndx(f_out, NDX_DONE);
2356         }
2357
2358         /* Read MSG_DONE for the redo phase (and any prior messages). */
2359         while (1) {
2360                 check_for_finished_files(itemizing, code, 0);
2361                 if (msgdone_cnt > 1)
2362                         break;
2363                 wait_for_receiver();
2364         }
2365
2366         if (protocol_version >= 29) {
2367                 phase++;
2368                 if (DEBUG_GTE(GENR, 1))
2369                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2370                 if (!EARLY_DELAY_DONE_MSG()) {
2371                         write_ndx(f_out, NDX_DONE);
2372                         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2373                                 write_ndx(f_out, NDX_DONE);
2374                 }
2375                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2376                 while (msgdone_cnt == 2)
2377                         wait_for_receiver();
2378         }
2379
2380         info_levels[INFO_FLIST] = save_info_flist;
2381         info_levels[INFO_PROGRESS] = save_info_progress;
2382
2383         if (delete_during == 2)
2384                 do_delayed_deletions(fbuf);
2385         if (delete_after && !solo_file && file_total > 0)
2386                 do_delete_pass();
2387
2388         if (max_delete >= 0 && skipped_deletes) {
2389                 rprintf(FWARNING,
2390                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2391                         skipped_deletes);
2392                 io_error |= IOERR_DEL_LIMIT;
2393         }
2394
2395         if (protocol_version >= 31) {
2396                 if (!EARLY_DELETE_DONE_MSG()) {
2397                         if (INFO_GTE(STATS, 2) || read_batch)
2398                                 write_del_stats(f_out);
2399                         write_ndx(f_out, NDX_DONE);
2400                 }
2401
2402                 /* Read MSG_DONE for late-delete phase & prior messages. */
2403                 while (msgdone_cnt == 3)
2404                         wait_for_receiver();
2405         }
2406
2407         if ((need_retouch_dir_perms || need_retouch_dir_times)
2408          && dir_tweaking && (!inc_recurse || delete_during == 2))
2409                 touch_up_dirs(dir_flist, -1);
2410
2411         if (DEBUG_GTE(GENR, 1))
2412                 rprintf(FINFO, "generate_files finished\n");
2413 }