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 int32 block_size;
  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, deldelay_size - deldelay_cnt,
 175                                "%x %s%c", (int)file->mode, fname, '\0');
 176                 if ((deldelay_cnt += len) <= deldelay_size)
 177                         break;
 178                 deldelay_cnt -= len;
 179                 if (!flush_delete_delay())
 180                         return 0;
 181         }
 182
 183         return 1;
 184 }
 185
 186 static int read_delay_line(char *buf, int *flags_p)
 187 {
 188         static int read_pos = 0;
 189         int j, len, mode;
 190         char *bp, *past_space;
 191
 192         while (1) {
 193                 for (j = read_pos; j < deldelay_cnt && deldelay_buf[j]; j++) {}
 194                 if (j < deldelay_cnt)
 195                         break;
 196                 if (deldelay_fd < 0) {
 197                         if (j > read_pos)
 198                                 goto invalid_data;
 199                         return -1;
 200                 }
 201                 deldelay_cnt -= read_pos;
 202                 if (deldelay_cnt == deldelay_size)
 203                         goto invalid_data;
 204                 if (deldelay_cnt && read_pos) {
 205                         memmove(deldelay_buf, deldelay_buf + read_pos,
 206                                 deldelay_cnt);
 207                 }
 208                 len = read(deldelay_fd, deldelay_buf + deldelay_cnt,
 209                            deldelay_size - deldelay_cnt);
 210                 if (len == 0) {
 211                         if (deldelay_cnt) {
 212                                 rprintf(FERROR, "ERROR: unexpected EOF in delete-delay file.\n");
 213                         }
 214                         return -1;
 215                 }
 216                 if (len < 0) {
 217                         rsyserr(FERROR, errno,
 218                                 "reading delete-delay file");
 219                         return -1;
 220                 }
 221                 deldelay_cnt += len;
 222                 read_pos = 0;
 223         }
 224
 225         bp = deldelay_buf + read_pos;
 226         if (*bp == '!') {
 227                 bp++;
 228                 *flags_p = DEL_NO_UID_WRITE;
 229         } else
 230                 *flags_p = 0;
 231
 232         if (sscanf(bp, "%x ", &mode) != 1) {
 233           invalid_data:
 234                 rprintf(FERROR, "ERROR: invalid data in delete-delay file.\n");
 235                 return -1;
 236         }
 237         past_space = strchr(bp, ' ') + 1;
 238         len = j - read_pos - (past_space - bp) + 1; /* count the '\0' */
 239         read_pos = j + 1;
 240
 241         if (len > MAXPATHLEN) {
 242                 rprintf(FERROR, "ERROR: filename too long in delete-delay file.\n");
 243                 return -1;
 244         }
 245
 246         /* The caller needs the name in a MAXPATHLEN buffer, so we copy it
 247          * instead of returning a pointer to our buffer. */
 248         memcpy(buf, past_space, len);
 249
 250         return mode;
 251 }
 252
 253 static void do_delayed_deletions(char *delbuf)
 254 {
 255         int mode, flags;
 256
 257         if (deldelay_fd >= 0) {
 258                 if (deldelay_cnt && !flush_delete_delay())
 259                         return;
 260                 lseek(deldelay_fd, 0, 0);
 261         }
 262         while ((mode = read_delay_line(delbuf, &flags)) >= 0)
 263                 delete_item(delbuf, mode, flags | DEL_RECURSE);
 264         if (deldelay_fd >= 0)
 265                 close(deldelay_fd);
 266 }
 267
 268 /* This function is used to implement per-directory deletion, and is used by
 269  * all the --delete-WHEN options.  Note that the fbuf pointer must point to a
 270  * MAXPATHLEN buffer with the name of the directory in it (the functions we
 271  * call will append names onto the end, but the old dir value will be restored
 272  * on exit). */
 273 static void delete_in_dir(char *fbuf, struct file_struct *file, dev_t *fs_dev)
 274 {
 275         static int already_warned = 0;
 276         static struct hashtable *dev_tbl;
 277         struct file_list *dirlist;
 278         char delbuf[MAXPATHLEN];
 279         int dlen, i;
 280
 281         if (!fbuf) {
 282                 change_local_filter_dir(NULL, 0, 0);
 283                 return;
 284         }
 285
 286         if (DEBUG_GTE(DEL, 2))
 287                 rprintf(FINFO, "delete_in_dir(%s)\n", fbuf);
 288
 289         if (allowed_lull)
 290                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
 291
 292         if (io_error & IOERR_GENERAL && !ignore_errors) {
 293                 if (already_warned)
 294                         return;
 295                 rprintf(FINFO,
 296                         "IO error encountered -- skipping file deletion\n");
 297                 already_warned = 1;
 298                 return;
 299         }
 300
 301         dlen = strlen(fbuf);
 302         change_local_filter_dir(fbuf, dlen, F_DEPTH(file));
 303
 304         if (one_file_system) {
 305                 if (!dev_tbl)
 306                         dev_tbl = hashtable_create(16, HT_KEY64);
 307                 if (file->flags & FLAG_TOP_DIR) {
 308                         hashtable_find(dev_tbl, *fs_dev+1, "");
 309                         filesystem_dev = *fs_dev;
 310                 } else if (filesystem_dev != *fs_dev) {
 311                         if (!hashtable_find(dev_tbl, *fs_dev+1, NULL))
 312                                 return;
 313                         filesystem_dev = *fs_dev; /* it's a prior top-dir dev */
 314                 }
 315         }
 316
 317         dirlist = get_dirlist(fbuf, dlen, 0);
 318
 319         /* If an item in dirlist is not found in flist, delete it
 320          * from the filesystem. */
 321         for (i = dirlist->used; i--; ) {
 322                 struct file_struct *fp = dirlist->files[i];
 323                 if (!F_IS_ACTIVE(fp))
 324                         continue;
 325                 if (fp->flags & FLAG_MOUNT_DIR && S_ISDIR(fp->mode)) {
 326                         if (INFO_GTE(MOUNT, 1))
 327                                 rprintf(FINFO, "cannot delete mount point: %s\n",
 328                                         f_name(fp, NULL));
 329                         continue;
 330                 }
 331                 /* Here we want to match regardless of file type.  Replacement
 332                  * of a file with one of another type is handled separately by
 333                  * a delete_item call with a DEL_MAKE_ROOM flag. */
 334                 if (flist_find_ignore_dirness(cur_flist, fp) < 0) {
 335                         int flags = DEL_RECURSE;
 336                         if (!(fp->mode & S_IWUSR) && !am_root && fp->flags & FLAG_OWNED_BY_US)
 337                                 flags |= DEL_NO_UID_WRITE;
 338                         f_name(fp, delbuf);
 339                         if (delete_during == 2) {
 340                                 if (!remember_delete(fp, delbuf, flags))
 341                                         break;
 342                         } else
 343                                 delete_item(delbuf, fp->mode, flags);
 344                 }
 345         }
 346
 347         flist_free(dirlist);
 348 }
 349
 350 /* This deletes any files on the receiving side that are not present on the
 351  * sending side.  This is used by --delete-before and --delete-after. */
 352 static void do_delete_pass(void)
 353 {
 354         char fbuf[MAXPATHLEN];
 355         STRUCT_STAT st;
 356         int j;
 357
 358         /* dry_run is incremented when the destination doesn't exist yet. */
 359         if (dry_run > 1 || list_only)
 360                 return;
 361
 362         for (j = 0; j < cur_flist->used; j++) {
 363                 struct file_struct *file = cur_flist->sorted[j];
 364
 365                 if (!F_IS_ACTIVE(file))
 366                         continue;
 367
 368                 f_name(file, fbuf);
 369
 370                 if (!(file->flags & FLAG_CONTENT_DIR)) {
 371                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(file));
 372                         continue;
 373                 }
 374
 375                 if (DEBUG_GTE(DEL, 1) && file->flags & FLAG_TOP_DIR)
 376                         rprintf(FINFO, "deleting in %s\n", fbuf);
 377
 378                 if (link_stat(fbuf, &st, keep_dirlinks) < 0
 379                  || !S_ISDIR(st.st_mode))
 380                         continue;
 381
 382                 delete_in_dir(fbuf, file, &st.st_dev);
 383         }
 384         delete_in_dir(NULL, NULL, &dev_zero);
 385
 386         if (INFO_GTE(FLIST, 2) && !am_server)
 387                 rprintf(FINFO, "                    \r");
 388 }
 389
 390 static inline int mtime_differs(STRUCT_STAT *stp, struct file_struct *file)
 391 {
 392 #ifdef ST_MTIME_NSEC
 393         return !same_time(stp->st_mtime, stp->ST_MTIME_NSEC, file->modtime, F_MOD_NSEC_or_0(file));
 394 #else
 395         return !same_time(stp->st_mtime, 0, file->modtime, 0);
 396 #endif
 397 }
 398
 399 static inline int perms_differ(struct file_struct *file, stat_x *sxp)
 400 {
 401         if (preserve_perms)
 402                 return !BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS);
 403
 404         if (preserve_executability)
 405                 return (sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0);
 406
 407         return 0;
 408 }
 409
 410 static inline int ownership_differs(struct file_struct *file, stat_x *sxp)
 411 {
 412         if (am_root && uid_ndx && sxp->st.st_uid != (uid_t)F_OWNER(file))
 413                 return 1;
 414
 415         if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 416                 return 1;
 417
 418         return 0;
 419 }
 420
 421 #ifdef SUPPORT_ACLS
 422 static inline int acls_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 423 {
 424         if (preserve_acls) {
 425                 if (!ACL_READY(*sxp))
 426                         get_acl(fname, sxp);
 427                 if (set_acl(NULL, file, sxp, file->mode))
 428                         return 1;
 429         }
 430
 431         return 0;
 432 }
 433 #endif
 434
 435 #ifdef SUPPORT_XATTRS
 436 static inline int xattrs_differ(const char *fname, struct file_struct *file, stat_x *sxp)
 437 {
 438         if (preserve_xattrs) {
 439                 if (!XATTR_READY(*sxp))
 440                         get_xattr(fname, sxp);
 441                 if (xattr_diff(file, sxp, 0))
 442                         return 1;
 443         }
 444
 445         return 0;
 446 }
 447 #endif
 448
 449 int unchanged_attrs(const char *fname, struct file_struct *file, stat_x *sxp)
 450 {
 451         if (S_ISLNK(file->mode)) {
 452 #ifdef CAN_SET_SYMLINK_TIMES
 453                 if (preserve_times & PRESERVE_LINK_TIMES && mtime_differs(&sxp->st, file))
 454                         return 0;
 455 #endif
 456 #ifdef CAN_CHMOD_SYMLINK
 457                 if (perms_differ(file, sxp))
 458                         return 0;
 459 #endif
 460 #ifdef CAN_CHOWN_SYMLINK
 461                 if (ownership_differs(file, sxp))
 462                         return 0;
 463 #endif
 464 #if defined SUPPORT_ACLS && 0 /* no current symlink-ACL support */
 465                 if (acls_differ(fname, file, sxp))
 466                         return 0;
 467 #endif
 468 #if defined SUPPORT_XATTRS && !defined NO_SYMLINK_XATTRS
 469                 if (xattrs_differ(fname, file, sxp))
 470                         return 0;
 471 #endif
 472         } else {
 473                 if (preserve_times && mtime_differs(&sxp->st, file))
 474                         return 0;
 475                 if (perms_differ(file, sxp))
 476                         return 0;
 477                 if (ownership_differs(file, sxp))
 478                         return 0;
 479 #ifdef SUPPORT_ACLS
 480                 if (acls_differ(fname, file, sxp))
 481                         return 0;
 482 #endif
 483 #ifdef SUPPORT_XATTRS
 484                 if (xattrs_differ(fname, file, sxp))
 485                         return 0;
 486 #endif
 487         }
 488
 489         return 1;
 490 }
 491
 492 void itemize(const char *fnamecmp, struct file_struct *file, int ndx, int statret,
 493              stat_x *sxp, int32 iflags, uchar fnamecmp_type,
 494              const char *xname)
 495 {
 496         if (statret >= 0) { /* A from-dest-dir statret can == 1! */
 497                 int keep_time = !preserve_times ? 0
 498                     : S_ISDIR(file->mode) ? preserve_times & PRESERVE_DIR_TIMES
 499                     : S_ISLNK(file->mode) ? preserve_times & PRESERVE_LINK_TIMES
 500                     : 1;
 501
 502                 if (S_ISREG(file->mode) && F_LENGTH(file) != sxp->st.st_size)
 503                         iflags |= ITEM_REPORT_SIZE;
 504                 if (file->flags & FLAG_TIME_FAILED) { /* symlinks only */
 505                         if (iflags & ITEM_LOCAL_CHANGE)
 506                                 iflags |= symlink_timeset_failed_flags;
 507                 } else if (keep_time
 508                  ? mtime_differs(&sxp->st, file)
 509                  : iflags & (ITEM_TRANSFER|ITEM_LOCAL_CHANGE) && !(iflags & ITEM_MATCHED)
 510                   && (!(iflags & ITEM_XNAME_FOLLOWS) || *xname))
 511                         iflags |= ITEM_REPORT_TIME;
 512                 if (atimes_ndx && !S_ISDIR(file->mode) && !S_ISLNK(file->mode)
 513                  && !same_time(F_ATIME(file), 0, sxp->st.st_atime, 0))
 514                         iflags |= ITEM_REPORT_ATIME;
 515 #if !defined HAVE_LCHMOD && !defined HAVE_SETATTRLIST
 516                 if (S_ISLNK(file->mode)) {
 517                         ;
 518                 } else
 519 #endif
 520                 if (preserve_perms) {
 521                         if (!BITS_EQUAL(sxp->st.st_mode, file->mode, CHMOD_BITS))
 522                                 iflags |= ITEM_REPORT_PERMS;
 523                 } else if (preserve_executability
 524                  && ((sxp->st.st_mode & 0111 ? 1 : 0) ^ (file->mode & 0111 ? 1 : 0)))
 525                         iflags |= ITEM_REPORT_PERMS;
 526                 if (uid_ndx && am_root && (uid_t)F_OWNER(file) != sxp->st.st_uid)
 527                         iflags |= ITEM_REPORT_OWNER;
 528                 if (gid_ndx && !(file->flags & FLAG_SKIP_GROUP) && sxp->st.st_gid != (gid_t)F_GROUP(file))
 529                         iflags |= ITEM_REPORT_GROUP;
 530 #ifdef SUPPORT_ACLS
 531                 if (preserve_acls && !S_ISLNK(file->mode)) {
 532                         if (!ACL_READY(*sxp))
 533                                 get_acl(fnamecmp, sxp);
 534                         if (set_acl(NULL, file, sxp, file->mode))
 535                                 iflags |= ITEM_REPORT_ACL;
 536                 }
 537 #endif
 538 #ifdef SUPPORT_XATTRS
 539                 if (preserve_xattrs) {
 540                         if (!XATTR_READY(*sxp))
 541                                 get_xattr(fnamecmp, sxp);
 542                         if (xattr_diff(file, sxp, 1))
 543                                 iflags |= ITEM_REPORT_XATTR;
 544                 }
 545 #endif
 546         } else {
 547 #ifdef SUPPORT_XATTRS
 548                 if (preserve_xattrs && xattr_diff(file, NULL, 1))
 549                         iflags |= ITEM_REPORT_XATTR;
 550 #endif
 551                 iflags |= ITEM_IS_NEW;
 552         }
 553
 554         iflags &= 0xffff;
 555         if ((iflags & (SIGNIFICANT_ITEM_FLAGS|ITEM_REPORT_XATTR) || INFO_GTE(NAME, 2)
 556           || stdout_format_has_i > 1 || (xname && *xname)) && !read_batch) {
 557                 if (protocol_version >= 29) {
 558                         if (ndx >= 0)
 559                                 write_ndx(sock_f_out, ndx);
 560                         write_shortint(sock_f_out, iflags);
 561                         if (iflags & ITEM_BASIS_TYPE_FOLLOWS)
 562                                 write_byte(sock_f_out, fnamecmp_type);
 563                         if (iflags & ITEM_XNAME_FOLLOWS)
 564                                 write_vstring(sock_f_out, xname, strlen(xname));
 565 #ifdef SUPPORT_XATTRS
 566                         if (preserve_xattrs && do_xfers
 567                          && iflags & (ITEM_REPORT_XATTR|ITEM_TRANSFER)) {
 568                                 int fd = iflags & ITEM_REPORT_XATTR
 569                                       && !(want_xattr_optim && BITS_SET(iflags, ITEM_XNAME_FOLLOWS|ITEM_LOCAL_CHANGE))
 570                                        ? sock_f_out : -1;
 571                                 send_xattr_request(NULL, file, fd);
 572                         }
 573 #endif
 574                 } else if (ndx >= 0) {
 575                         enum logcode code = logfile_format_has_i ? FINFO : FCLIENT;
 576                         log_item(code, file, iflags, xname);
 577                 }
 578         }
 579 }
 580
 581
 582 /* Perform our quick-check heuristic for determining if a file is unchanged. */
 583 int unchanged_file(char *fn, struct file_struct *file, STRUCT_STAT *st)
 584 {
 585         if (st->st_size != F_LENGTH(file))
 586                 return 0;
 587
 588         /* if always checksum is set then we use the checksum instead
 589            of the file time to determine whether to sync */
 590         if (always_checksum > 0 && S_ISREG(st->st_mode)) {
 591                 char sum[MAX_DIGEST_LEN];
 592                 file_checksum(fn, st, sum);
 593                 return memcmp(sum, F_SUM(file), flist_csum_len) == 0;
 594         }
 595
 596         if (size_only > 0)
 597                 return 1;
 598
 599         if (ignore_times)
 600                 return 0;
 601
 602         return !mtime_differs(st, file);
 603 }
 604
 605
 606 /*
 607  * set (initialize) the size entries in the per-file sum_struct
 608  * calculating dynamic block and checksum sizes.
 609  *
 610  * This is only called from generate_and_send_sums() but is a separate
 611  * function to encapsulate the logic.
 612  *
 613  * The block size is a rounded square root of file length.
 614  *
 615  * The checksum size is determined according to:
 616  *     blocksum_bits = BLOCKSUM_BIAS + 2*log2(file_len) - log2(block_len)
 617  * provided by Donovan Baarda which gives a probability of rsync
 618  * algorithm corrupting data and falling back using the whole md4
 619  * checksums.
 620  *
 621  * This might be made one of several selectable heuristics.
 622  */
 623 static void sum_sizes_sqroot(struct sum_struct *sum, int64 len)
 624 {
 625         int32 blength;
 626         int s2length;
 627         int64 l;
 628
 629         if (len < 0) {
 630                 /* The file length overflowed our int64 var, so we can't process this file. */
 631                 sum->count = -1; /* indicate overflow error */
 632                 return;
 633         }
 634
 635         if (block_size)
 636                 blength = block_size;
 637         else if (len <= BLOCK_SIZE * BLOCK_SIZE)
 638                 blength = BLOCK_SIZE;
 639         else {
 640                 int32 max_blength = protocol_version < 30 ? OLD_MAX_BLOCK_SIZE : MAX_BLOCK_SIZE;
 641                 int32 c;
 642                 int cnt;
 643                 for (c = 1, l = len, cnt = 0; l >>= 2; c <<= 1, cnt++) {}
 644                 if (c < 0 || c >= max_blength)
 645                         blength = max_blength;
 646                 else {
 647                         blength = 0;
 648                         do {
 649                                 blength |= c;
 650                                 if (len < (int64)blength * blength)
 651                                         blength &= ~c;
 652                                 c >>= 1;
 653                         } while (c >= 8);       /* round to multiple of 8 */
 654                         blength = MAX(blength, BLOCK_SIZE);
 655                 }
 656         }
 657
 658         if (protocol_version < 27) {
 659                 s2length = csum_length;
 660         } else if (csum_length == SUM_LENGTH) {
 661                 s2length = SUM_LENGTH;
 662         } else {
 663                 int32 c;
 664                 int b = BLOCKSUM_BIAS;
 665                 for (l = len; l >>= 1; b += 2) {}
 666                 for (c = blength; (c >>= 1) && b; b--) {}
 667                 /* add a bit, subtract rollsum, round up. */
 668                 s2length = (b + 1 - 32 + 7) / 8; /* --optimize in compiler-- */
 669                 s2length = MAX(s2length, csum_length);
 670                 s2length = MIN(s2length, SUM_LENGTH);
 671         }
 672
 673         sum->flength    = len;
 674         sum->blength    = blength;
 675         sum->s2length   = s2length;
 676         sum->remainder  = (int32)(len % blength);
 677         sum->count      = (int32)(l = (len / blength) + (sum->remainder != 0));
 678
 679         if ((int64)sum->count != l)
 680                 sum->count = -1;
 681
 682         if (sum->count && DEBUG_GTE(DELTASUM, 2)) {
 683                 rprintf(FINFO,
 684                         "count=%s rem=%ld blength=%ld s2length=%d flength=%s\n",
 685                         big_num(sum->count), (long)sum->remainder, (long)sum->blength,
 686                         sum->s2length, big_num(sum->flength));
 687         }
 688 }
 689
 690
 691 /*
 692  * Generate and send a stream of signatures/checksums that describe a buffer
 693  *
 694  * Generate approximately one checksum every block_len bytes.
 695  */
 696 static int generate_and_send_sums(int fd, OFF_T len, int f_out, int f_copy)
 697 {
 698         int32 i;
 699         struct map_struct *mapbuf;
 700         struct sum_struct sum;
 701         OFF_T offset = 0;
 702
 703         sum_sizes_sqroot(&sum, len);
 704         if (sum.count < 0)
 705                 return -1;
 706         write_sum_head(f_out, &sum);
 707
 708         if (append_mode > 0 && f_copy < 0)
 709                 return 0;
 710
 711         if (len > 0)
 712                 mapbuf = map_file(fd, len, MAX_MAP_SIZE, sum.blength);
 713         else
 714                 mapbuf = NULL;
 715
 716         for (i = 0; i < sum.count; i++) {
 717                 int32 n1 = (int32)MIN(len, (OFF_T)sum.blength);
 718                 char *map = map_ptr(mapbuf, offset, n1);
 719                 char sum2[SUM_LENGTH];
 720                 uint32 sum1;
 721
 722                 len -= n1;
 723                 offset += n1;
 724
 725                 if (f_copy >= 0) {
 726                         full_write(f_copy, map, n1);
 727                         if (append_mode > 0)
 728                                 continue;
 729                 }
 730
 731                 sum1 = get_checksum1(map, n1);
 732                 get_checksum2(map, n1, sum2);
 733
 734                 if (DEBUG_GTE(DELTASUM, 3)) {
 735                         rprintf(FINFO,
 736                                 "chunk[%s] offset=%s len=%ld sum1=%08lx\n",
 737                                 big_num(i), big_num(offset - n1), (long)n1,
 738                                 (unsigned long)sum1);
 739                 }
 740                 write_int(f_out, sum1);
 741                 write_buf(f_out, sum2, sum.s2length);
 742         }
 743
 744         if (mapbuf)
 745                 unmap_file(mapbuf);
 746
 747         return 0;
 748 }
 749
 750
 751 /* Try to find a filename in the same dir as "fname" with a similar name. */
 752 static struct file_struct *find_fuzzy(struct file_struct *file, struct file_list *dirlist_array[], uchar *fnamecmp_type_ptr)
 753 {
 754         int fname_len, fname_suf_len;
 755         const char *fname_suf, *fname = file->basename;
 756         uint32 lowest_dist = 25 << 16; /* ignore a distance greater than 25 */
 757         int i, j;
 758         struct file_struct *lowest_fp = NULL;
 759
 760         fname_len = strlen(fname);
 761         fname_suf = find_filename_suffix(fname, fname_len, &fname_suf_len);
 762
 763         /* Try to find an exact size+mtime match first. */
 764         for (i = 0; i < fuzzy_basis; i++) {
 765                 struct file_list *dirlist = dirlist_array[i];
 766
 767                 if (!dirlist)
 768                         continue;
 769
 770                 for (j = 0; j < dirlist->used; j++) {
 771                         struct file_struct *fp = dirlist->files[j];
 772
 773                         if (!F_IS_ACTIVE(fp))
 774                                 continue;
 775
 776                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 777                                 continue;
 778
 779                         if (F_LENGTH(fp) == F_LENGTH(file) && same_time(fp->modtime, 0, file->modtime, 0)) {
 780                                 if (DEBUG_GTE(FUZZY, 2))
 781                                         rprintf(FINFO, "fuzzy size/modtime match for %s\n", f_name(fp, NULL));
 782                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 783                                 return fp;
 784                         }
 785
 786                 }
 787         }
 788
 789         for (i = 0; i < fuzzy_basis; i++) {
 790                 struct file_list *dirlist = dirlist_array[i];
 791
 792                 if (!dirlist)
 793                         continue;
 794
 795                 for (j = 0; j < dirlist->used; j++) {
 796                         struct file_struct *fp = dirlist->files[j];
 797                         const char *suf, *name;
 798                         int len, suf_len;
 799                         uint32 dist;
 800
 801                         if (!F_IS_ACTIVE(fp))
 802                                 continue;
 803
 804                         if (!S_ISREG(fp->mode) || !F_LENGTH(fp) || fp->flags & FLAG_FILE_SENT)
 805                                 continue;
 806
 807                         name = fp->basename;
 808                         len = strlen(name);
 809                         suf = find_filename_suffix(name, len, &suf_len);
 810
 811                         dist = fuzzy_distance(name, len, fname, fname_len);
 812                         /* Add some extra weight to how well the suffixes match. */
 813                         dist += fuzzy_distance(suf, suf_len, fname_suf, fname_suf_len) * 10;
 814                         if (DEBUG_GTE(FUZZY, 2)) {
 815                                 rprintf(FINFO, "fuzzy distance for %s = %d.%05d\n",
 816                                         f_name(fp, NULL), (int)(dist>>16), (int)(dist&0xFFFF));
 817                         }
 818                         if (dist <= lowest_dist) {
 819                                 lowest_dist = dist;
 820                                 lowest_fp = fp;
 821                                 *fnamecmp_type_ptr = FNAMECMP_FUZZY + i;
 822                         }
 823                 }
 824         }
 825
 826         return lowest_fp;
 827 }
 828
 829 /* Copy a file found in our --copy-dest handling. */
 830 static int copy_altdest_file(const char *src, const char *dest, struct file_struct *file)
 831 {
 832         char buf[MAXPATHLEN];
 833         const char *copy_to, *partialptr;
 834         int save_preserve_xattrs = preserve_xattrs;
 835         int ok, fd_w;
 836
 837         if (inplace) {
 838                 /* Let copy_file open the destination in place. */
 839                 fd_w = -1;
 840                 copy_to = dest;
 841         } else {
 842                 fd_w = open_tmpfile(buf, dest, file);
 843                 if (fd_w < 0)
 844                         return -1;
 845                 copy_to = buf;
 846         }
 847         cleanup_set(copy_to, NULL, NULL, -1, -1);
 848         if (copy_file(src, copy_to, fd_w, file->mode) < 0) {
 849                 if (INFO_GTE(COPY, 1)) {
 850                         rsyserr(FINFO, errno, "copy_file %s => %s",
 851                                 full_fname(src), copy_to);
 852                 }
 853                 /* Try to clean up. */
 854                 unlink(copy_to);
 855                 cleanup_disable();
 856                 return -1;
 857         }
 858         partialptr = partial_dir ? partial_dir_fname(dest) : NULL;
 859         preserve_xattrs = 0; /* xattrs were copied with file */
 860         ok = finish_transfer(dest, copy_to, src, partialptr, file, 1, 0);
 861         preserve_xattrs = save_preserve_xattrs;
 862         cleanup_disable();
 863         return ok ? 0 : -1;
 864 }
 865
 866 /* This is only called for regular files.  We return -2 if we've finished
 867  * handling the file, -1 if no dest-linking occurred, or a non-negative
 868  * value if we found an alternate basis file.  If we're called with the
 869  * find_exact_for_existing flag, the destination file already exists, so
 870  * we only try to find an exact alt-dest match.  In this case, the returns
 871  * are only -2 & -1 (both as above). */
 872 static int try_dests_reg(struct file_struct *file, char *fname, int ndx,
 873                          char *cmpbuf, stat_x *sxp, int find_exact_for_existing,
 874                          int itemizing, enum logcode code)
 875 {
 876         STRUCT_STAT real_st = sxp->st;
 877         int best_match = -1;
 878         int match_level = 0;
 879         int j = 0;
 880
 881         do {
 882                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 883                 if (link_stat(cmpbuf, &sxp->st, 0) < 0 || !S_ISREG(sxp->st.st_mode))
 884                         continue;
 885                 if (match_level == 0) {
 886                         best_match = j;
 887                         match_level = 1;
 888                 }
 889                 if (!unchanged_file(cmpbuf, file, &sxp->st))
 890                         continue;
 891                 if (match_level == 1) {
 892                         best_match = j;
 893                         match_level = 2;
 894                 }
 895                 if (unchanged_attrs(cmpbuf, file, sxp)) {
 896                         best_match = j;
 897                         match_level = 3;
 898                         break;
 899                 }
 900                 free_stat_x(sxp);
 901         } while (basis_dir[++j] != NULL);
 902
 903         if (!match_level)
 904                 goto got_nothing_for_ya;
 905
 906         if (j != best_match) {
 907                 j = best_match;
 908                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
 909                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
 910                         goto got_nothing_for_ya;
 911         }
 912
 913         if (match_level == 3 && alt_dest_type != COPY_DEST) {
 914                 if (find_exact_for_existing) {
 915                         if (alt_dest_type == LINK_DEST && real_st.st_dev == sxp->st.st_dev && real_st.st_ino == sxp->st.st_ino)
 916                                 return -1;
 917                         if (do_unlink(fname) < 0 && errno != ENOENT)
 918                                 goto got_nothing_for_ya;
 919                 }
 920 #ifdef SUPPORT_HARD_LINKS
 921                 if (alt_dest_type == LINK_DEST) {
 922                         if (!hard_link_one(file, fname, cmpbuf, 1))
 923                                 goto try_a_copy;
 924                         if (atimes_ndx)
 925                                 set_file_attrs(fname, file, sxp, NULL, 0);
 926                         if (preserve_hard_links && F_IS_HLINKED(file))
 927                                 finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, j);
 928                         if (!maybe_ATTRS_REPORT && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
 929                                 itemize(cmpbuf, file, ndx, 1, sxp,
 930                                         ITEM_LOCAL_CHANGE | ITEM_XNAME_FOLLOWS,
 931                                         0, "");
 932                         }
 933                 } else
 934 #endif
 935                 {
 936                         if (itemizing)
 937                                 itemize(cmpbuf, file, ndx, 0, sxp, 0, 0, NULL);
 938                 }
 939                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT)
 940                         rprintf(FCLIENT, "%s is uptodate\n", fname);
 941                 return -2;
 942         }
 943
 944         if (find_exact_for_existing)
 945                 goto got_nothing_for_ya;
 946
 947         if (match_level >= 2) {
 948 #ifdef SUPPORT_HARD_LINKS
 949           try_a_copy: /* Copy the file locally. */
 950 #endif
 951                 if (!dry_run && copy_altdest_file(cmpbuf, fname, file) < 0) {
 952                         if (find_exact_for_existing) /* Can get here via hard-link failure */
 953                                 goto got_nothing_for_ya;
 954                         return -1;
 955                 }
 956                 if (itemizing)
 957                         itemize(cmpbuf, file, ndx, 0, sxp, ITEM_LOCAL_CHANGE, 0, NULL);
 958                 if (maybe_ATTRS_REPORT
 959                  && ((!itemizing && INFO_GTE(NAME, 1) && match_level == 2)
 960                   || (INFO_GTE(NAME, 2) && match_level == 3))) {
 961                         code = match_level == 3 ? FCLIENT : FINFO;
 962                         rprintf(code, "%s%s\n", fname,
 963                                 match_level == 3 ? " is uptodate" : "");
 964                 }
 965 #ifdef SUPPORT_HARD_LINKS
 966                 if (preserve_hard_links && F_IS_HLINKED(file))
 967                         finish_hard_link(file, fname, ndx, &sxp->st, itemizing, code, -1);
 968 #endif
 969                 return -2;
 970         }
 971
 972         return FNAMECMP_BASIS_DIR_LOW + j;
 973
 974 got_nothing_for_ya:
 975         sxp->st = real_st;
 976         return -1;
 977 }
 978
 979 /* This is only called for non-regular files.  We return -2 if we've finished
 980  * handling the file, or -1 if no dest-linking occurred, or a non-negative
 981  * value if we found an alternate basis file. */
 982 static int try_dests_non(struct file_struct *file, char *fname, int ndx,
 983                          char *cmpbuf, stat_x *sxp, int itemizing,
 984                          enum logcode code)
 985 {
 986         int best_match = -1;
 987         int match_level = 0;
 988         enum nonregtype type;
 989         uint32 *devp;
 990 #ifdef SUPPORT_LINKS
 991         char lnk[MAXPATHLEN];
 992         int len;
 993 #endif
 994         int j = 0;
 995
 996 #ifndef SUPPORT_LINKS
 997         if (S_ISLNK(file->mode))
 998                 return -1;
 999 #endif
1000         if (S_ISDIR(file->mode)) {
1001                 type = TYPE_DIR;
1002         } else if (IS_SPECIAL(file->mode))
1003                 type = TYPE_SPECIAL;
1004         else if (IS_DEVICE(file->mode))
1005                 type = TYPE_DEVICE;
1006 #ifdef SUPPORT_LINKS
1007         else if (S_ISLNK(file->mode))
1008                 type = TYPE_SYMLINK;
1009 #endif
1010         else {
1011                 rprintf(FERROR,
1012                         "internal: try_dests_non() called with invalid mode (%o)\n",
1013                         (int)file->mode);
1014                 exit_cleanup(RERR_UNSUPPORTED);
1015         }
1016
1017         do {
1018                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1019                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1020                         continue;
1021                 switch (type) {
1022                 case TYPE_DIR:
1023                         if (!S_ISDIR(sxp->st.st_mode))
1024                                 continue;
1025                         break;
1026                 case TYPE_SPECIAL:
1027                         if (!IS_SPECIAL(sxp->st.st_mode))
1028                                 continue;
1029                         break;
1030                 case TYPE_DEVICE:
1031                         if (!IS_DEVICE(sxp->st.st_mode))
1032                                 continue;
1033                         break;
1034                 case TYPE_SYMLINK:
1035 #ifdef SUPPORT_LINKS
1036                         if (!S_ISLNK(sxp->st.st_mode))
1037                                 continue;
1038                         break;
1039 #else
1040                         return -1;
1041 #endif
1042                 }
1043                 if (match_level < 1) {
1044                         match_level = 1;
1045                         best_match = j;
1046                 }
1047                 switch (type) {
1048                 case TYPE_DIR:
1049                 case TYPE_SPECIAL:
1050                         break;
1051                 case TYPE_DEVICE:
1052                         devp = F_RDEV_P(file);
1053                         if (sxp->st.st_rdev != MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp)))
1054                                 continue;
1055                         break;
1056                 case TYPE_SYMLINK:
1057 #ifdef SUPPORT_LINKS
1058                         if ((len = do_readlink(cmpbuf, lnk, MAXPATHLEN-1)) <= 0)
1059                                 continue;
1060                         lnk[len] = '\0';
1061                         if (strcmp(lnk, F_SYMLINK(file)) != 0)
1062                                 continue;
1063                         break;
1064 #else
1065                         return -1;
1066 #endif
1067                 }
1068                 if (match_level < 2) {
1069                         match_level = 2;
1070                         best_match = j;
1071                 }
1072                 if (unchanged_attrs(cmpbuf, file, sxp)) {
1073                         match_level = 3;
1074                         best_match = j;
1075                         break;
1076                 }
1077         } while (basis_dir[++j] != NULL);
1078
1079         if (!match_level)
1080                 return -1;
1081
1082         if (j != best_match) {
1083                 j = best_match;
1084                 pathjoin(cmpbuf, MAXPATHLEN, basis_dir[j], fname);
1085                 if (link_stat(cmpbuf, &sxp->st, 0) < 0)
1086                         return -1;
1087         }
1088
1089         if (match_level == 3) {
1090 #ifdef SUPPORT_HARD_LINKS
1091                 if (alt_dest_type == LINK_DEST
1092 #ifndef CAN_HARDLINK_SYMLINK
1093                  && !S_ISLNK(file->mode)
1094 #endif
1095 #ifndef CAN_HARDLINK_SPECIAL
1096                  && !IS_SPECIAL(file->mode) && !IS_DEVICE(file->mode)
1097 #endif
1098                  && !S_ISDIR(file->mode)) {
1099                         if (do_link(cmpbuf, fname) < 0) {
1100                                 rsyserr(FERROR_XFER, errno,
1101                                         "failed to hard-link %s with %s",
1102                                         cmpbuf, fname);
1103                                 return j;
1104                         }
1105                         if (preserve_hard_links && F_IS_HLINKED(file))
1106                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1107                 } else
1108 #endif
1109                         match_level = 2;
1110                 if (itemizing && stdout_format_has_i
1111                  && (INFO_GTE(NAME, 2) || stdout_format_has_i > 1)) {
1112                         int chg = alt_dest_type == COMPARE_DEST && type != TYPE_DIR ? 0
1113                             : ITEM_LOCAL_CHANGE + (match_level == 3 ? ITEM_XNAME_FOLLOWS : 0);
1114                         char *lp = match_level == 3 ? "" : NULL;
1115                         itemize(cmpbuf, file, ndx, 0, sxp, chg + ITEM_MATCHED, 0, lp);
1116                 }
1117                 if (INFO_GTE(NAME, 2) && maybe_ATTRS_REPORT) {
1118                         rprintf(FCLIENT, "%s%s is uptodate\n",
1119                                 fname, type == TYPE_DIR ? "/" : "");
1120                 }
1121                 return -2;
1122         }
1123
1124         return j;
1125 }
1126
1127 static void list_file_entry(struct file_struct *f)
1128 {
1129         char permbuf[PERMSTRING_SIZE];
1130         const char *mtime_str = timestring(f->modtime);
1131         int size_width = human_readable ? 14 : 11;
1132         int mtime_width = 1 + strlen(mtime_str);
1133         int atime_width = atimes_ndx ? mtime_width : 0;
1134
1135         if (!F_IS_ACTIVE(f)) {
1136                 /* this can happen if duplicate names were removed */
1137                 return;
1138         }
1139
1140         /* TODO: indicate '+' if the entry has an ACL. */
1141
1142         if (missing_args == 2 && f->mode == 0) {
1143                 rprintf(FINFO, "%-*s %s\n",
1144                         10 + 1 + size_width + mtime_width + atime_width, "*missing",
1145                         f_name(f, NULL));
1146         } else {
1147                 const char *atime_str = atimes_ndx && !S_ISDIR(f->mode) ? timestring(F_ATIME(f)) : "";
1148                 const char *arrow, *lnk;
1149
1150                 permstring(permbuf, f->mode);
1151
1152 #ifdef SUPPORT_LINKS
1153                 if (preserve_links && S_ISLNK(f->mode)) {
1154                         arrow = " -> ";
1155                         lnk = F_SYMLINK(f);
1156                 } else
1157 #endif
1158                         arrow = lnk = "";
1159
1160                 rprintf(FINFO, "%s %*s %s%*s %s%s%s\n",
1161                         permbuf, size_width, human_num(F_LENGTH(f)),
1162                         timestring(f->modtime), atime_width, atime_str,
1163                         f_name(f, NULL), arrow, lnk);
1164         }
1165 }
1166
1167 static int phase = 0;
1168 static int dflt_perms;
1169
1170 static int implied_dirs_are_missing;
1171 /* Helper for recv_generator's skip_dir and dry_missing_dir tests. */
1172 static BOOL is_below(struct file_struct *file, struct file_struct *subtree)
1173 {
1174         return F_DEPTH(file) > F_DEPTH(subtree)
1175                 && (!implied_dirs_are_missing || f_name_has_prefix(file, subtree));
1176 }
1177
1178 /* Acts on the indicated item in cur_flist whose name is fname.  If a dir,
1179  * make sure it exists, and has the right permissions/timestamp info.  For
1180  * all other non-regular files (symlinks, etc.) we create them here.  For
1181  * regular files that have changed, we try to find a basis file and then
1182  * start sending checksums.  The ndx is the file's unique index value.
1183  *
1184  * The fname parameter must point to a MAXPATHLEN buffer!  (e.g it gets
1185  * passed to delete_item(), which can use it during a recursive delete.)
1186  *
1187  * Note that f_out is set to -1 when doing final directory-permission and
1188  * modification-time repair. */
1189 static void recv_generator(char *fname, struct file_struct *file, int ndx,
1190                            int itemizing, enum logcode code, int f_out)
1191 {
1192         static const char *parent_dirname = "";
1193         static struct file_struct *prior_dir_file = NULL;
1194         /* Missing dir not created due to --dry-run; will still be scanned. */
1195         static struct file_struct *dry_missing_dir = NULL;
1196         /* Missing dir whose contents are skipped altogether due to
1197          * --ignore-non-existing, daemon exclude, or mkdir failure. */
1198         static struct file_struct *skip_dir = NULL;
1199         static struct file_list *fuzzy_dirlist[MAX_BASIS_DIRS+1];
1200         static int need_fuzzy_dirlist = 0;
1201         struct file_struct *fuzzy_file = NULL;
1202         int fd = -1, f_copy = -1;
1203         stat_x sx, real_sx;
1204         STRUCT_STAT partial_st;
1205         struct file_struct *back_file = NULL;
1206         int statret, real_ret, stat_errno;
1207         char *fnamecmp, *partialptr, *backupptr = NULL;
1208         char fnamecmpbuf[MAXPATHLEN];
1209         uchar fnamecmp_type;
1210         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1211         int is_dir = !S_ISDIR(file->mode) ? 0
1212                    : inc_recurse && ndx != cur_flist->ndx_start - 1 ? -1
1213                    : 1;
1214
1215         if (DEBUG_GTE(GENR, 1))
1216                 rprintf(FINFO, "recv_generator(%s,%d)\n", fname, ndx);
1217
1218         if (list_only) {
1219                 if (is_dir < 0
1220                  || (is_dir && !implied_dirs && file->flags & FLAG_IMPLIED_DIR))
1221                         return;
1222                 list_file_entry(file);
1223                 return;
1224         }
1225
1226         maybe_ATTRS_ACCURATE_TIME = always_checksum ? ATTRS_ACCURATE_TIME : 0;
1227
1228         if (skip_dir) {
1229                 if (is_below(file, skip_dir)) {
1230                         if (is_dir)
1231                                 file->flags |= FLAG_MISSING_DIR;
1232 #ifdef SUPPORT_HARD_LINKS
1233                         else if (F_IS_HLINKED(file))
1234                                 handle_skipped_hlink(file, itemizing, code, f_out);
1235 #endif
1236                         return;
1237                 }
1238                 skip_dir = NULL;
1239         }
1240
1241         init_stat_x(&sx);
1242         if (daemon_filter_list.head && (*fname != '.' || fname[1])) {
1243                 if (check_filter(&daemon_filter_list, FLOG, fname, is_dir) < 0) {
1244                         if (is_dir < 0)
1245                                 return;
1246 #ifdef SUPPORT_HARD_LINKS
1247                         if (F_IS_HLINKED(file))
1248                                 handle_skipped_hlink(file, itemizing, code, f_out);
1249 #endif
1250                         rprintf(FERROR_XFER,
1251                                 "ERROR: daemon refused to receive %s \"%s\"\n",
1252                                 is_dir ? "directory" : "file", fname);
1253                         if (is_dir)
1254                                 goto skipping_dir_contents;
1255                         return;
1256                 }
1257         }
1258
1259         if (dry_run > 1 || (dry_missing_dir && is_below(file, dry_missing_dir))) {
1260                 int i;
1261           parent_is_dry_missing:
1262                 for (i = 0; i < fuzzy_basis; i++) {
1263                         if (fuzzy_dirlist[i]) {
1264                                 flist_free(fuzzy_dirlist[i]);
1265                                 fuzzy_dirlist[i] = NULL;
1266                         }
1267                 }
1268                 parent_dirname = "";
1269                 statret = -1;
1270                 stat_errno = ENOENT;
1271         } else {
1272                 const char *dn = file->dirname ? file->dirname : ".";
1273                 dry_missing_dir = NULL;
1274                 if (parent_dirname != dn && strcmp(parent_dirname, dn) != 0) {
1275                         /* Each parent dir must be in the file list or the flist data is bad.
1276                          * Optimization: most of the time the parent dir will be the last dir
1277                          * this function was asked to process in the file list. */
1278                         if (!inc_recurse
1279                          && (*dn != '.' || dn[1]) /* Avoid an issue with --relative and the "." dir. */
1280                          && (!prior_dir_file || strcmp(dn, f_name(prior_dir_file, NULL)) != 0)
1281                          && flist_find_name(cur_flist, dn, 1) < 0) {
1282                                 /* The --delete-missing-args option can actually put invalid entries into
1283                                  * the file list, so if that option was specified, we'll just complain about
1284                                  * it and allow it. */
1285                                 if (missing_args == 2 && file->mode == 0)
1286                                         rprintf(FERROR, "WARNING: parent dir is absent in the file list: %s\n", dn);
1287                                 else {
1288                                         rprintf(FERROR, "ABORTING due to invalid path from sender: %s/%s\n",
1289                                                 dn, file->basename);
1290                                         exit_cleanup(RERR_PROTOCOL);
1291                                 }
1292                         }
1293                         if (relative_paths && !implied_dirs && file->mode != 0
1294                          && do_stat(dn, &sx.st) < 0) {
1295                                 if (dry_run)
1296                                         goto parent_is_dry_missing;
1297                                 if (make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0) {
1298                                         rsyserr(FERROR_XFER, errno,
1299                                                 "recv_generator: mkdir %s failed",
1300                                                 full_fname(dn));
1301                                 }
1302                         }
1303                         if (fuzzy_basis) {
1304                                 int i;
1305                                 for (i = 0; i < fuzzy_basis; i++) {
1306                                         if (fuzzy_dirlist[i]) {
1307                                                 flist_free(fuzzy_dirlist[i]);
1308                                                 fuzzy_dirlist[i] = NULL;
1309                                         }
1310                                 }
1311                                 need_fuzzy_dirlist = 1;
1312                         }
1313 #ifdef SUPPORT_ACLS
1314                         if (!preserve_perms)
1315                                 dflt_perms = default_perms_for_dir(dn);
1316 #endif
1317                 }
1318                 parent_dirname = dn;
1319
1320                 statret = link_stat(fname, &sx.st, keep_dirlinks && is_dir);
1321                 stat_errno = errno;
1322         }
1323
1324         if (missing_args == 2 && file->mode == 0) {
1325                 if (filter_list.head && check_filter(&filter_list, FINFO, fname, is_dir) < 0)
1326                         return;
1327                 if (statret == 0)
1328                         delete_item(fname, sx.st.st_mode, del_opts);
1329                 return;
1330         }
1331
1332         if (ignore_non_existing > 0 && statret == -1 && stat_errno == ENOENT) {
1333                 if (is_dir) {
1334                         if (is_dir < 0)
1335                                 return;
1336                         skip_dir = file;
1337                         file->flags |= FLAG_MISSING_DIR;
1338                 }
1339 #ifdef SUPPORT_HARD_LINKS
1340                 else if (F_IS_HLINKED(file))
1341                         handle_skipped_hlink(file, itemizing, code, f_out);
1342 #endif
1343                 if (INFO_GTE(SKIP, 1)) {
1344                         rprintf(FINFO, "not creating new %s \"%s\"\n",
1345                                 is_dir ? "directory" : "file", fname);
1346                 }
1347                 return;
1348         }
1349
1350         if (statret == 0 && !(sx.st.st_mode & S_IWUSR)
1351          && !am_root && sx.st.st_uid == our_uid)
1352                 del_opts |= DEL_NO_UID_WRITE;
1353
1354         if (ignore_existing > 0 && statret == 0
1355          && (!is_dir || !S_ISDIR(sx.st.st_mode))) {
1356                 if (INFO_GTE(SKIP, 1) && is_dir >= 0)
1357                         rprintf(FINFO, "%s exists\n", fname);
1358 #ifdef SUPPORT_HARD_LINKS
1359                 if (F_IS_HLINKED(file))
1360                         handle_skipped_hlink(file, itemizing, code, f_out);
1361 #endif
1362                 goto cleanup;
1363         }
1364
1365         fnamecmp = fname;
1366
1367         if (is_dir) {
1368                 mode_t added_perms;
1369                 if (!implied_dirs && file->flags & FLAG_IMPLIED_DIR)
1370                         goto cleanup;
1371                 if (am_root < 0) {
1372                         /* For --fake-super, the dir must be useable by the copying
1373                          * user, just like it would be for root. */
1374                         added_perms = S_IRUSR|S_IWUSR|S_IXUSR;
1375                 } else
1376                         added_perms = 0;
1377                 if (is_dir < 0) {
1378                         if (!(preserve_times & PRESERVE_DIR_TIMES))
1379                                 goto cleanup;
1380                         /* In inc_recurse mode we want to make sure any missing
1381                          * directories get created while we're still processing
1382                          * the parent dir (which allows us to touch the parent
1383                          * dir's mtime right away).  We will handle the dir in
1384                          * full later (right before we handle its contents). */
1385                         if (statret == 0
1386                          && (S_ISDIR(sx.st.st_mode)
1387                           || delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0))
1388                                 goto cleanup; /* Any errors get reported later. */
1389                         if (do_mkdir(fname, (file->mode|added_perms) & 0700) == 0)
1390                                 file->flags |= FLAG_DIR_CREATED;
1391                         goto cleanup;
1392                 }
1393                 /* The file to be received is a directory, so we need
1394                  * to prepare appropriately.  If there is already a
1395                  * file of that name and it is *not* a directory, then
1396                  * we need to delete it.  If it doesn't exist, then
1397                  * (perhaps recursively) create it. */
1398                 if (statret == 0 && !S_ISDIR(sx.st.st_mode)) {
1399                         if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_DIR) != 0)
1400                                 goto skipping_dir_contents;
1401                         statret = -1;
1402                 }
1403                 if (dry_run && statret != 0) {
1404                         if (!dry_missing_dir)
1405                                 dry_missing_dir = file;
1406                         file->flags |= FLAG_MISSING_DIR;
1407                 }
1408                 init_stat_x(&real_sx);
1409                 real_sx.st = sx.st;
1410                 real_ret = statret;
1411                 if (file->flags & FLAG_DIR_CREATED)
1412                         statret = -1;
1413                 if (!preserve_perms) { /* See comment in non-dir code below. */
1414                         file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, statret == 0);
1415                 }
1416                 if (statret != 0 && basis_dir[0] != NULL) {
1417                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
1418                         if (j == -2) {
1419                                 itemizing = 0;
1420                                 code = FNONE;
1421                                 statret = 1;
1422                         } else if (j >= 0) {
1423                                 statret = 1;
1424                                 fnamecmp = fnamecmpbuf;
1425                         }
1426                 }
1427                 if (itemizing && f_out != -1) {
1428                         itemize(fnamecmp, file, ndx, statret, &sx,
1429                                 statret ? ITEM_LOCAL_CHANGE : 0, 0, NULL);
1430                 }
1431                 if (real_ret != 0 && do_mkdir(fname,file->mode|added_perms) < 0 && errno != EEXIST) {
1432                         if (!relative_paths || errno != ENOENT
1433                          || make_path(fname, MKP_DROP_NAME | MKP_SKIP_SLASH) < 0
1434                          || (do_mkdir(fname, file->mode|added_perms) < 0 && errno != EEXIST)) {
1435                                 rsyserr(FERROR_XFER, errno,
1436                                         "recv_generator: mkdir %s failed",
1437                                         full_fname(fname));
1438                           skipping_dir_contents:
1439                                 rprintf(FERROR, "*** Skipping any contents from this failed directory ***\n");
1440                                 skip_dir = file;
1441                                 file->flags |= FLAG_MISSING_DIR;
1442                                 goto cleanup;
1443                         }
1444                 }
1445
1446 #ifdef SUPPORT_XATTRS
1447                 if (preserve_xattrs && statret == 1)
1448                         copy_xattrs(fnamecmpbuf, fname);
1449 #endif
1450                 if (set_file_attrs(fname, file, real_ret ? NULL : &real_sx, NULL, 0)
1451                  && INFO_GTE(NAME, 1) && code != FNONE && f_out != -1)
1452                         rprintf(code, "%s/\n", fname);
1453
1454                 /* We need to ensure that the dirs in the transfer have both
1455                  * readable and writable permissions during the time we are
1456                  * putting files within them.  This is then restored to the
1457                  * former permissions after the transfer is done. */
1458 #ifdef HAVE_CHMOD
1459                 if (!am_root && (file->mode & S_IRWXU) != S_IRWXU && dir_tweaking) {
1460                         mode_t mode = file->mode | S_IRWXU;
1461                         if (do_chmod(fname, mode) < 0) {
1462                                 rsyserr(FERROR_XFER, errno,
1463                                         "failed to modify permissions on %s",
1464                                         full_fname(fname));
1465                         }
1466                         need_retouch_dir_perms = 1;
1467                 }
1468 #endif
1469
1470                 if (real_ret != 0 && one_file_system)
1471                         real_sx.st.st_dev = filesystem_dev;
1472                 if (inc_recurse) {
1473                         if (one_file_system) {
1474                                 uint32 *devp = F_DIR_DEV_P(file);
1475                                 DEV_MAJOR(devp) = major(real_sx.st.st_dev);
1476                                 DEV_MINOR(devp) = minor(real_sx.st.st_dev);
1477                         }
1478                 }
1479                 else if (delete_during && f_out != -1 && !phase
1480                     && !(file->flags & FLAG_MISSING_DIR)) {
1481                         if (file->flags & FLAG_CONTENT_DIR)
1482                                 delete_in_dir(fname, file, &real_sx.st.st_dev);
1483                         else
1484                                 change_local_filter_dir(fname, strlen(fname), F_DEPTH(file));
1485                 }
1486                 prior_dir_file = file;
1487                 goto cleanup;
1488         }
1489
1490         /* If we're not preserving permissions, change the file-list's
1491          * mode based on the local permissions and some heuristics. */
1492         if (!preserve_perms) {
1493                 int exists = statret == 0 && !S_ISDIR(sx.st.st_mode);
1494                 file->mode = dest_mode(file->mode, sx.st.st_mode, dflt_perms, exists);
1495         }
1496
1497 #ifdef SUPPORT_HARD_LINKS
1498         if (preserve_hard_links && F_HLINK_NOT_FIRST(file)
1499          && hard_link_check(file, ndx, fname, statret, &sx, itemizing, code))
1500                 goto cleanup;
1501 #endif
1502
1503         if (preserve_links && S_ISLNK(file->mode)) {
1504 #ifdef SUPPORT_LINKS
1505                 const char *sl = F_SYMLINK(file);
1506                 if (safe_symlinks && unsafe_symlink(sl, fname)) {
1507                         if (INFO_GTE(NAME, 1)) {
1508                                 if (solo_file) {
1509                                         /* fname contains the destination path, but we
1510                                          * want to report the source path. */
1511                                         fname = f_name(file, NULL);
1512                                 }
1513                                 rprintf(FINFO,
1514                                         "ignoring unsafe symlink \"%s\" -> \"%s\"\n",
1515                                         fname, sl);
1516                         }
1517                         goto cleanup;
1518                 }
1519                 if (statret == 0) {
1520                         char lnk[MAXPATHLEN];
1521                         int len;
1522
1523                         if (S_ISLNK(sx.st.st_mode)
1524                          && (len = do_readlink(fname, lnk, MAXPATHLEN-1)) > 0
1525                          && strncmp(lnk, sl, len) == 0 && sl[len] == '\0') {
1526                                 /* The link is pointing to the right place. */
1527                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1528                                 if (itemizing)
1529                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1530 #ifdef SUPPORT_HARD_LINKS
1531                                 if (preserve_hard_links && F_IS_HLINKED(file))
1532                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1533 #endif
1534                                 if (remove_source_files == 1)
1535                                         goto return_with_success;
1536                                 goto cleanup;
1537                         }
1538                 } else if (basis_dir[0] != NULL) {
1539                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
1540                         if (j == -2) {
1541 #ifndef CAN_HARDLINK_SYMLINK
1542                                 if (alt_dest_type == LINK_DEST) {
1543                                         /* Resort to --copy-dest behavior. */
1544                                 } else
1545 #endif
1546                                 if (alt_dest_type != COPY_DEST)
1547                                         goto cleanup;
1548                                 itemizing = 0;
1549                                 code = FNONE;
1550                         } else if (j >= 0) {
1551                                 statret = 1;
1552                                 fnamecmp = fnamecmpbuf;
1553                         }
1554                 }
1555                 if (atomic_create(file, fname, sl, NULL, MAKEDEV(0, 0), &sx, statret == 0 ? DEL_FOR_SYMLINK : 0)) {
1556                         set_file_attrs(fname, file, NULL, NULL, 0);
1557                         if (itemizing) {
1558                                 if (statret == 0 && !S_ISLNK(sx.st.st_mode))
1559                                         statret = -1;
1560                                 itemize(fnamecmp, file, ndx, statret, &sx,
1561                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1562                         }
1563                         if (code != FNONE && INFO_GTE(NAME, 1))
1564                                 rprintf(code, "%s -> %s\n", fname, sl);
1565 #ifdef SUPPORT_HARD_LINKS
1566                         if (preserve_hard_links && F_IS_HLINKED(file))
1567                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1568 #endif
1569                         /* This does not check remove_source_files == 1
1570                          * because this is one of the items that the old
1571                          * --remove-sent-files option would remove. */
1572                         if (remove_source_files)
1573                                 goto return_with_success;
1574                 }
1575 #endif
1576                 goto cleanup;
1577         }
1578
1579         if ((am_root && preserve_devices && IS_DEVICE(file->mode))
1580          || (preserve_specials && IS_SPECIAL(file->mode))) {
1581                 dev_t rdev;
1582                 int del_for_flag = 0;
1583                 if (IS_DEVICE(file->mode)) {
1584                         uint32 *devp = F_RDEV_P(file);
1585                         rdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
1586                 } else
1587                         rdev = 0;
1588                 if (statret == 0) {
1589                         if (IS_DEVICE(file->mode)) {
1590                                 if (!IS_DEVICE(sx.st.st_mode))
1591                                         statret = -1;
1592                                 del_for_flag = DEL_FOR_DEVICE;
1593                         } else {
1594                                 if (!IS_SPECIAL(sx.st.st_mode))
1595                                         statret = -1;
1596                                 del_for_flag = DEL_FOR_SPECIAL;
1597                         }
1598                         if (statret == 0
1599                          && BITS_EQUAL(sx.st.st_mode, file->mode, _S_IFMT)
1600                          && (IS_SPECIAL(sx.st.st_mode) || sx.st.st_rdev == rdev)) {
1601                                 /* The device or special file is identical. */
1602                                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT);
1603                                 if (itemizing)
1604                                         itemize(fname, file, ndx, 0, &sx, 0, 0, NULL);
1605 #ifdef SUPPORT_HARD_LINKS
1606                                 if (preserve_hard_links && F_IS_HLINKED(file))
1607                                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1608 #endif
1609                                 if (remove_source_files == 1)
1610                                         goto return_with_success;
1611                                 goto cleanup;
1612                         }
1613                 } else if (basis_dir[0] != NULL) {
1614                         int j = try_dests_non(file, fname, ndx, fnamecmpbuf, &sx, itemizing, code);
1615                         if (j == -2) {
1616 #ifndef CAN_HARDLINK_SPECIAL
1617                                 if (alt_dest_type == LINK_DEST) {
1618                                         /* Resort to --copy-dest behavior. */
1619                                 } else
1620 #endif
1621                                 if (alt_dest_type != COPY_DEST)
1622                                         goto cleanup;
1623                                 itemizing = 0;
1624                                 code = FNONE;
1625                         } else if (j >= 0) {
1626                                 statret = 1;
1627                                 fnamecmp = fnamecmpbuf;
1628                         }
1629                 }
1630                 if (DEBUG_GTE(GENR, 1)) {
1631                         rprintf(FINFO, "mknod(%s, 0%o, [%ld,%ld])\n",
1632                                 fname, (int)file->mode,
1633                                 (long)major(rdev), (long)minor(rdev));
1634                 }
1635                 if (atomic_create(file, fname, NULL, NULL, rdev, &sx, del_for_flag)) {
1636                         set_file_attrs(fname, file, NULL, NULL, 0);
1637                         if (itemizing) {
1638                                 itemize(fnamecmp, file, ndx, statret, &sx,
1639                                         ITEM_LOCAL_CHANGE|ITEM_REPORT_CHANGE, 0, NULL);
1640                         }
1641                         if (code != FNONE && INFO_GTE(NAME, 1))
1642                                 rprintf(code, "%s\n", fname);
1643 #ifdef SUPPORT_HARD_LINKS
1644                         if (preserve_hard_links && F_IS_HLINKED(file))
1645                                 finish_hard_link(file, fname, ndx, NULL, itemizing, code, -1);
1646 #endif
1647                         if (remove_source_files == 1)
1648                                 goto return_with_success;
1649                 }
1650                 goto cleanup;
1651         }
1652
1653         if (!S_ISREG(file->mode)) {
1654                 if (solo_file)
1655                         fname = f_name(file, NULL);
1656                 rprintf(FINFO, "skipping non-regular file \"%s\"\n", fname);
1657                 goto cleanup;
1658         }
1659
1660         if (max_size >= 0 && F_LENGTH(file) > max_size) {
1661                 if (INFO_GTE(SKIP, 1)) {
1662                         if (solo_file)
1663                                 fname = f_name(file, NULL);
1664                         rprintf(FINFO, "%s is over max-size\n", fname);
1665                 }
1666                 goto cleanup;
1667         }
1668         if (min_size >= 0 && F_LENGTH(file) < min_size) {
1669                 if (INFO_GTE(SKIP, 1)) {
1670                         if (solo_file)
1671                                 fname = f_name(file, NULL);
1672                         rprintf(FINFO, "%s is under min-size\n", fname);
1673                 }
1674                 goto cleanup;
1675         }
1676
1677         if (update_only > 0 && statret == 0 && file->modtime - sx.st.st_mtime <= modify_window) {
1678                 if (INFO_GTE(SKIP, 1))
1679                         rprintf(FINFO, "%s is newer\n", fname);
1680 #ifdef SUPPORT_HARD_LINKS
1681                 if (F_IS_HLINKED(file))
1682                         handle_skipped_hlink(file, itemizing, code, f_out);
1683 #endif
1684                 goto cleanup;
1685         }
1686
1687         fnamecmp_type = FNAMECMP_FNAME;
1688
1689         if (statret == 0 && !(S_ISREG(sx.st.st_mode) || (write_devices && IS_DEVICE(sx.st.st_mode)))) {
1690                 if (delete_item(fname, sx.st.st_mode, del_opts | DEL_FOR_FILE) != 0)
1691                         goto cleanup;
1692                 statret = -1;
1693                 stat_errno = ENOENT;
1694         }
1695
1696         if (basis_dir[0] != NULL && (statret != 0 || alt_dest_type != COPY_DEST)) {
1697                 int j = try_dests_reg(file, fname, ndx, fnamecmpbuf, &sx, statret == 0, itemizing, code);
1698                 if (j == -2) {
1699                         if (remove_source_files == 1)
1700                                 goto return_with_success;
1701                         goto cleanup;
1702                 }
1703                 if (j >= 0) {
1704                         fnamecmp = fnamecmpbuf;
1705                         fnamecmp_type = j;
1706                         statret = 0;
1707                 }
1708         }
1709
1710         init_stat_x(&real_sx);
1711         real_sx.st = sx.st; /* Don't copy xattr/acl pointers, as they would free wrong. */
1712         real_ret = statret;
1713
1714         if (partial_dir && (partialptr = partial_dir_fname(fname)) != NULL
1715          && link_stat(partialptr, &partial_st, 0) == 0
1716          && S_ISREG(partial_st.st_mode)) {
1717                 if (statret != 0)
1718                         goto prepare_to_open;
1719         } else
1720                 partialptr = NULL;
1721
1722         if (statret != 0 && fuzzy_basis) {
1723                 if (need_fuzzy_dirlist && S_ISREG(file->mode)) {
1724                         const char *dn = file->dirname ? file->dirname : ".";
1725                         int i;
1726                         strlcpy(fnamecmpbuf, dn, sizeof fnamecmpbuf);
1727                         for (i = 0; i < fuzzy_basis; i++) {
1728                                 if (i && pathjoin(fnamecmpbuf, MAXPATHLEN, basis_dir[i-1], dn) >= MAXPATHLEN)
1729                                         continue;
1730                                 fuzzy_dirlist[i] = get_dirlist(fnamecmpbuf, -1, GDL_IGNORE_FILTER_RULES | GDL_PERHAPS_DIR);
1731                                 if (fuzzy_dirlist[i] && fuzzy_dirlist[i]->used == 0) {
1732                                         flist_free(fuzzy_dirlist[i]);
1733                                         fuzzy_dirlist[i] = NULL;
1734                                 }
1735                         }
1736                         need_fuzzy_dirlist = 0;
1737                 }
1738
1739                 /* Sets fnamecmp_type to FNAMECMP_FUZZY or above. */
1740                 fuzzy_file = find_fuzzy(file, fuzzy_dirlist, &fnamecmp_type);
1741                 if (fuzzy_file) {
1742                         f_name(fuzzy_file, fnamecmpbuf);
1743                         if (DEBUG_GTE(FUZZY, 1)) {
1744                                 rprintf(FINFO, "fuzzy basis selected for %s: %s\n",
1745                                         fname, fnamecmpbuf);
1746                         }
1747                         sx.st.st_size = F_LENGTH(fuzzy_file);
1748                         statret = 0;
1749                         fnamecmp = fnamecmpbuf;
1750                 }
1751         }
1752
1753         if (statret != 0) {
1754 #ifdef SUPPORT_HARD_LINKS
1755                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1756                         cur_flist->in_progress++;
1757                         goto cleanup;
1758                 }
1759 #endif
1760                 if (stat_errno == ENOENT)
1761                         goto notify_others;
1762                 rsyserr(FERROR_XFER, stat_errno, "recv_generator: failed to stat %s",
1763                         full_fname(fname));
1764                 goto cleanup;
1765         }
1766
1767         if (fnamecmp_type <= FNAMECMP_BASIS_DIR_HIGH)
1768                 ;
1769         else if (fnamecmp_type >= FNAMECMP_FUZZY)
1770                 ;
1771         else if (unchanged_file(fnamecmp, file, &sx.st)) {
1772                 if (partialptr) {
1773                         do_unlink(partialptr);
1774                         handle_partial_dir(partialptr, PDIR_DELETE);
1775                 }
1776                 set_file_attrs(fname, file, &sx, NULL, maybe_ATTRS_REPORT | maybe_ATTRS_ACCURATE_TIME);
1777                 if (itemizing)
1778                         itemize(fnamecmp, file, ndx, statret, &sx, 0, 0, NULL);
1779 #ifdef SUPPORT_HARD_LINKS
1780                 if (preserve_hard_links && F_IS_HLINKED(file))
1781                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1782 #endif
1783                 if (remove_source_files != 1)
1784                         goto cleanup;
1785           return_with_success:
1786                 if (!dry_run)
1787                         send_msg_int(MSG_SUCCESS, ndx);
1788                 goto cleanup;
1789         }
1790
1791         if (append_mode > 0 && sx.st.st_size >= F_LENGTH(file)) {
1792 #ifdef SUPPORT_HARD_LINKS
1793                 if (F_IS_HLINKED(file))
1794                         handle_skipped_hlink(file, itemizing, code, f_out);
1795 #endif
1796                 goto cleanup;
1797         }
1798
1799   prepare_to_open:
1800         if (partialptr) {
1801                 sx.st = partial_st;
1802                 fnamecmp = partialptr;
1803                 fnamecmp_type = FNAMECMP_PARTIAL_DIR;
1804                 statret = 0;
1805         }
1806
1807         if (!do_xfers)
1808                 goto notify_others;
1809
1810         if (read_batch || whole_file) {
1811                 if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1812                         if (!(backupptr = get_backup_name(fname)))
1813                                 goto cleanup;
1814                         if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS)))
1815                                 goto pretend_missing;
1816                         if (copy_file(fname, backupptr, -1, back_file->mode) < 0) {
1817                                 unmake_file(back_file);
1818                                 back_file = NULL;
1819                                 goto cleanup;
1820                         }
1821                 }
1822                 goto notify_others;
1823         }
1824
1825         if (fuzzy_dirlist[0]) {
1826                 int j = flist_find(fuzzy_dirlist[0], file);
1827                 if (j >= 0) /* don't use changing file as future fuzzy basis */
1828                         fuzzy_dirlist[0]->files[j]->flags |= FLAG_FILE_SENT;
1829         }
1830
1831         /* open the file */
1832         if ((fd = do_open(fnamecmp, O_RDONLY, 0)) < 0) {
1833                 rsyserr(FERROR, errno, "failed to open %s, continuing",
1834                         full_fname(fnamecmp));
1835           pretend_missing:
1836                 /* pretend the file didn't exist */
1837 #ifdef SUPPORT_HARD_LINKS
1838                 if (preserve_hard_links && F_HLINK_NOT_LAST(file)) {
1839                         cur_flist->in_progress++;
1840                         goto cleanup;
1841                 }
1842 #endif
1843                 statret = real_ret = -1;
1844                 goto notify_others;
1845         }
1846
1847         if (inplace && make_backups > 0 && fnamecmp_type == FNAMECMP_FNAME) {
1848                 if (!(backupptr = get_backup_name(fname))) {
1849                         close(fd);
1850                         goto cleanup;
1851                 }
1852                 if (!(back_file = make_file(fname, NULL, NULL, 0, NO_FILTERS))) {
1853                         close(fd);
1854                         goto pretend_missing;
1855                 }
1856                 if (robust_unlink(backupptr) && errno != ENOENT) {
1857                         rsyserr(FERROR_XFER, errno, "unlink %s",
1858                                 full_fname(backupptr));
1859                         unmake_file(back_file);
1860                         back_file = NULL;
1861                         close(fd);
1862                         goto cleanup;
1863                 }
1864                 if ((f_copy = do_open(backupptr, O_WRONLY | O_CREAT | O_TRUNC | O_EXCL, 0600)) < 0) {
1865                         rsyserr(FERROR_XFER, errno, "open %s", full_fname(backupptr));
1866                         unmake_file(back_file);
1867                         back_file = NULL;
1868                         close(fd);
1869                         goto cleanup;
1870                 }
1871                 fnamecmp_type = FNAMECMP_BACKUP;
1872         }
1873
1874         if (DEBUG_GTE(DELTASUM, 3)) {
1875                 rprintf(FINFO, "gen mapped %s of size %s\n",
1876                         fnamecmp, big_num(sx.st.st_size));
1877         }
1878
1879         if (DEBUG_GTE(DELTASUM, 2))
1880                 rprintf(FINFO, "generating and sending sums for %d\n", ndx);
1881
1882   notify_others:
1883         if (remove_source_files && !delay_updates && !phase && !dry_run)
1884                 increment_active_files(ndx, itemizing, code);
1885         if (inc_recurse && (!dry_run || write_batch < 0))
1886                 cur_flist->in_progress++;
1887 #ifdef SUPPORT_HARD_LINKS
1888         if (preserve_hard_links && F_IS_HLINKED(file))
1889                 file->flags |= FLAG_FILE_SENT;
1890 #endif
1891         write_ndx(f_out, ndx);
1892         if (itemizing) {
1893                 int iflags = ITEM_TRANSFER;
1894                 if (always_checksum > 0)
1895                         iflags |= ITEM_REPORT_CHANGE;
1896                 if (fnamecmp_type != FNAMECMP_FNAME)
1897                         iflags |= ITEM_BASIS_TYPE_FOLLOWS;
1898                 if (fnamecmp_type >= FNAMECMP_FUZZY)
1899                         iflags |= ITEM_XNAME_FOLLOWS;
1900                 itemize(fnamecmp, file, -1, real_ret, &real_sx, iflags, fnamecmp_type,
1901                         fuzzy_file ? fuzzy_file->basename : NULL);
1902                 free_stat_x(&real_sx);
1903         }
1904
1905         if (!do_xfers) {
1906 #ifdef SUPPORT_HARD_LINKS
1907                 if (preserve_hard_links && F_IS_HLINKED(file))
1908                         finish_hard_link(file, fname, ndx, &sx.st, itemizing, code, -1);
1909 #endif
1910                 goto cleanup;
1911         }
1912         if (read_batch)
1913                 goto cleanup;
1914
1915         if (statret != 0 || whole_file)
1916                 write_sum_head(f_out, NULL);
1917         else if (sx.st.st_size <= 0) {
1918                 write_sum_head(f_out, NULL);
1919                 close(fd);
1920         } else {
1921                 if (generate_and_send_sums(fd, sx.st.st_size, f_out, f_copy) < 0) {
1922                         rprintf(FWARNING,
1923                                 "WARNING: file is too large for checksum sending: %s\n",
1924                                 fnamecmp);
1925                         write_sum_head(f_out, NULL);
1926                 }
1927                 close(fd);
1928         }
1929
1930   cleanup:
1931         if (back_file) {
1932                 int save_preserve_xattrs = preserve_xattrs;
1933                 if (f_copy >= 0)
1934                         close(f_copy);
1935 #ifdef SUPPORT_XATTRS
1936                 if (preserve_xattrs) {
1937                         copy_xattrs(fname, backupptr);
1938                         preserve_xattrs = 0;
1939                 }
1940 #endif
1941                 set_file_attrs(backupptr, back_file, NULL, NULL, 0);
1942                 preserve_xattrs = save_preserve_xattrs;
1943                 if (INFO_GTE(BACKUP, 1)) {
1944                         rprintf(FINFO, "backed up %s to %s\n",
1945                                 fname, backupptr);
1946                 }
1947                 unmake_file(back_file);
1948         }
1949
1950         free_stat_x(&sx);
1951 }
1952
1953 /* If we are replacing an existing hard link, symlink, device, or special file,
1954  * create a temp-name item and rename it into place.  A symlimk specifies slnk,
1955  * a hard link specifies hlnk, otherwise we create a device based on rdev.
1956  * Specify 0 for the del_for_flag if there is not a file to replace.  This
1957  * returns 1 on success and 0 on failure. */
1958 int atomic_create(struct file_struct *file, char *fname, const char *slnk, const char *hlnk,
1959                   dev_t rdev, stat_x *sxp, int del_for_flag)
1960 {
1961         char tmpname[MAXPATHLEN];
1962         const char *create_name;
1963         int skip_atomic, dir_in_the_way = del_for_flag && S_ISDIR(sxp->st.st_mode);
1964
1965         if (!del_for_flag || dir_in_the_way || tmpdir || !get_tmpname(tmpname, fname, True))
1966                 skip_atomic = 1;
1967         else
1968                 skip_atomic = 0;
1969
1970         if (del_for_flag) {
1971                 if (make_backups > 0 && !dir_in_the_way) {
1972                         if (!make_backup(fname, skip_atomic))
1973                                 return 0;
1974                 } else if (skip_atomic) {
1975                         int del_opts = delete_mode || force_delete ? DEL_RECURSE : 0;
1976                         if (delete_item(fname, sxp->st.st_mode, del_opts | del_for_flag) != 0)
1977                                 return 0;
1978                 }
1979         }
1980
1981         create_name = skip_atomic ? fname : tmpname;
1982
1983         if (slnk) {
1984 #ifdef SUPPORT_LINKS
1985                 if (do_symlink(slnk, create_name) < 0) {
1986                         rsyserr(FERROR_XFER, errno, "symlink %s -> \"%s\" failed",
1987                                 full_fname(create_name), slnk);
1988                         return 0;
1989                 }
1990 #else
1991                 return 0;
1992 #endif
1993         } else if (hlnk) {
1994 #ifdef SUPPORT_HARD_LINKS
1995                 if (!hard_link_one(file, create_name, hlnk, 0))
1996                         return 0;
1997 #else
1998                 return 0;
1999 #endif
2000         } else {
2001                 if (do_mknod(create_name, file->mode, rdev) < 0) {
2002                         rsyserr(FERROR_XFER, errno, "mknod %s failed",
2003                                 full_fname(create_name));
2004                         return 0;
2005                 }
2006         }
2007
2008         if (!skip_atomic) {
2009                 if (do_rename(tmpname, fname) < 0) {
2010                         rsyserr(FERROR_XFER, errno, "rename %s -> \"%s\" failed",
2011                                 full_fname(tmpname), full_fname(fname));
2012                         do_unlink(tmpname);
2013                         return 0;
2014                 }
2015         }
2016
2017         return 1;
2018 }
2019
2020 #ifdef SUPPORT_HARD_LINKS
2021 static void handle_skipped_hlink(struct file_struct *file, int itemizing,
2022                                  enum logcode code, int f_out)
2023 {
2024         char fbuf[MAXPATHLEN];
2025         int new_last_ndx;
2026         struct file_list *save_flist = cur_flist;
2027
2028         /* If we skip the last item in a chain of links and there was a
2029          * prior non-skipped hard-link waiting to finish, finish it now. */
2030         if ((new_last_ndx = skip_hard_link(file, &cur_flist)) < 0)
2031                 return;
2032
2033         file = cur_flist->files[new_last_ndx - cur_flist->ndx_start];
2034         cur_flist->in_progress--; /* undo prior increment */
2035         f_name(file, fbuf);
2036         recv_generator(fbuf, file, new_last_ndx, itemizing, code, f_out);
2037
2038         cur_flist = save_flist;
2039 }
2040 #endif
2041
2042 static void touch_up_dirs(struct file_list *flist, int ndx)
2043 {
2044         static int counter = 0;
2045         struct file_struct *file;
2046         char *fname;
2047         BOOL fix_dir_perms;
2048         int i, start, end;
2049
2050         if (ndx < 0) {
2051                 start = 0;
2052                 end = flist->used - 1;
2053         } else
2054                 start = end = ndx;
2055
2056         /* Fix any directory permissions that were modified during the
2057          * transfer and/or re-set any tweaked modified-time values. */
2058         for (i = start; i <= end; i++, counter++) {
2059                 file = flist->files[i];
2060                 if (!F_IS_ACTIVE(file))
2061                         continue;
2062                 if (!S_ISDIR(file->mode)
2063                  || (!implied_dirs && file->flags & FLAG_IMPLIED_DIR))
2064                         continue;
2065                 if (DEBUG_GTE(TIME, 2)) {
2066                         fname = f_name(file, NULL);
2067                         rprintf(FINFO, "touch_up_dirs: %s (%d)\n",
2068                                 NS(fname), i);
2069                 }
2070                 /* Be sure not to retouch permissions with --fake-super. */
2071                 fix_dir_perms = !am_root && !(file->mode & S_IWUSR);
2072                 if (file->flags & FLAG_MISSING_DIR || !(need_retouch_dir_times || fix_dir_perms))
2073                         continue;
2074                 fname = f_name(file, NULL);
2075                 if (fix_dir_perms)
2076                         do_chmod(fname, file->mode);
2077                 if (need_retouch_dir_times) {
2078                         STRUCT_STAT st;
2079                         if (link_stat(fname, &st, 0) == 0 && mtime_differs(&st, file)) {
2080                                 st.st_mtime = file->modtime;
2081 #ifdef ST_MTIME_NSEC
2082                                 st.ST_MTIME_NSEC = F_MOD_NSEC_or_0(file);
2083 #endif
2084                                 set_times(fname, &st);
2085                         }
2086                 }
2087                 if (counter >= loopchk_limit) {
2088                         if (allowed_lull)
2089                                 maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2090                         else
2091                                 maybe_flush_socket(0);
2092                         counter = 0;
2093                 }
2094         }
2095 }
2096
2097 void check_for_finished_files(int itemizing, enum logcode code, int check_redo)
2098 {
2099         struct file_struct *file;
2100         struct file_list *flist;
2101         char fbuf[MAXPATHLEN];
2102         int ndx;
2103
2104         while (1) {
2105 #ifdef SUPPORT_HARD_LINKS
2106                 if (preserve_hard_links && (ndx = get_hlink_num()) != -1) {
2107                         int send_failed = (ndx == -2);
2108                         if (send_failed)
2109                                 ndx = get_hlink_num();
2110                         flist = flist_for_ndx(ndx, "check_for_finished_files.1");
2111                         file = flist->files[ndx - flist->ndx_start];
2112                         assert(file->flags & FLAG_HLINKED);
2113                         if (send_failed)
2114                                 handle_skipped_hlink(file, itemizing, code, sock_f_out);
2115                         else
2116                                 finish_hard_link(file, f_name(file, fbuf), ndx, NULL, itemizing, code, -1);
2117                         flist->in_progress--;
2118                         continue;
2119                 }
2120 #endif
2121
2122                 if (check_redo && (ndx = get_redo_num()) != -1) {
2123                         OFF_T save_max_size = max_size;
2124                         OFF_T save_min_size = min_size;
2125                         csum_length = SUM_LENGTH;
2126                         max_size = -1;
2127                         min_size = -1;
2128                         ignore_existing = -ignore_existing;
2129                         ignore_non_existing = -ignore_non_existing;
2130                         update_only = -update_only;
2131                         always_checksum = -always_checksum;
2132                         size_only = -size_only;
2133                         append_mode = -append_mode;
2134                         make_backups = -make_backups; /* avoid dup backup w/inplace */
2135                         ignore_times++;
2136
2137                         flist = cur_flist;
2138                         cur_flist = flist_for_ndx(ndx, "check_for_finished_files.2");
2139
2140                         file = cur_flist->files[ndx - cur_flist->ndx_start];
2141                         if (solo_file)
2142                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2143                         else
2144                                 f_name(file, fbuf);
2145                         recv_generator(fbuf, file, ndx, itemizing, code, sock_f_out);
2146                         cur_flist->to_redo--;
2147
2148                         cur_flist = flist;
2149
2150                         csum_length = SHORT_SUM_LENGTH;
2151                         max_size = save_max_size;
2152                         min_size = save_min_size;
2153                         ignore_existing = -ignore_existing;
2154                         ignore_non_existing = -ignore_non_existing;
2155                         update_only = -update_only;
2156                         always_checksum = -always_checksum;
2157                         size_only = -size_only;
2158                         append_mode = -append_mode;
2159                         make_backups = -make_backups;
2160                         ignore_times--;
2161                         continue;
2162                 }
2163
2164                 if (cur_flist == first_flist)
2165                         break;
2166
2167                 /* We only get here if inc_recurse is enabled. */
2168                 if (first_flist->in_progress || first_flist->to_redo)
2169                         break;
2170
2171                 write_ndx(sock_f_out, NDX_DONE);
2172                 if (!read_batch && !flist_eof) {
2173                         int old_total = 0;
2174                         for (flist = first_flist; flist != cur_flist; flist = flist->next)
2175                                 old_total += flist->used;
2176                         maybe_flush_socket(!flist_eof && file_total - old_total < MIN_FILECNT_LOOKAHEAD/2);
2177                 }
2178
2179                 if (delete_during == 2 || !dir_tweaking) {
2180                         /* Skip directory touch-up. */
2181                 } else if (first_flist->parent_ndx >= 0)
2182                         touch_up_dirs(dir_flist, first_flist->parent_ndx);
2183
2184                 flist_free(first_flist); /* updates first_flist */
2185         }
2186 }
2187
2188 void generate_files(int f_out, const char *local_name)
2189 {
2190         int i, ndx, next_loopchk = 0;
2191         char fbuf[MAXPATHLEN];
2192         int itemizing;
2193         enum logcode code;
2194         int save_info_flist = info_levels[INFO_FLIST];
2195         int save_info_progress = info_levels[INFO_PROGRESS];
2196
2197         if (protocol_version >= 29) {
2198                 itemizing = 1;
2199                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2200                 code = logfile_format_has_i ? FNONE : FLOG;
2201         } else if (am_daemon) {
2202                 itemizing = logfile_format_has_i && do_xfers;
2203                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2204                 code = itemizing || !do_xfers ? FCLIENT : FINFO;
2205         } else if (!am_server) {
2206                 itemizing = stdout_format_has_i;
2207                 maybe_ATTRS_REPORT = stdout_format_has_i ? 0 : ATTRS_REPORT;
2208                 code = itemizing ? FNONE : FINFO;
2209         } else {
2210                 itemizing = 0;
2211                 maybe_ATTRS_REPORT = ATTRS_REPORT;
2212                 code = FINFO;
2213         }
2214         solo_file = local_name;
2215         dir_tweaking = !(list_only || solo_file || dry_run);
2216         need_retouch_dir_times = preserve_times & PRESERVE_DIR_TIMES;
2217         loopchk_limit = allowed_lull ? allowed_lull * 5 : 200;
2218         symlink_timeset_failed_flags = ITEM_REPORT_TIME
2219             | (protocol_version >= 30 || !am_server ? ITEM_REPORT_TIMEFAIL : 0);
2220         implied_dirs_are_missing = relative_paths && !implied_dirs && protocol_version < 30;
2221
2222         if (DEBUG_GTE(GENR, 1))
2223                 rprintf(FINFO, "generator starting pid=%d\n", (int)getpid());
2224
2225         if (delete_before && !solo_file && cur_flist->used > 0)
2226                 do_delete_pass();
2227         if (delete_during == 2) {
2228                 deldelay_size = BIGPATHBUFLEN * 4;
2229                 deldelay_buf = new_array(char, deldelay_size);
2230         }
2231         info_levels[INFO_FLIST] = info_levels[INFO_PROGRESS] = 0;
2232
2233         if (append_mode > 0 || whole_file < 0)
2234                 whole_file = 0;
2235         if (DEBUG_GTE(FLIST, 1)) {
2236                 rprintf(FINFO, "delta-transmission %s\n",
2237                         whole_file
2238                         ? "disabled for local transfer or --whole-file"
2239                         : "enabled");
2240         }
2241
2242         dflt_perms = (ACCESSPERMS & ~orig_umask);
2243
2244         do {
2245 #ifdef SUPPORT_HARD_LINKS
2246                 if (preserve_hard_links && inc_recurse) {
2247                         while (!flist_eof && file_total < MIN_FILECNT_LOOKAHEAD/2)
2248                                 wait_for_receiver();
2249                 }
2250 #endif
2251
2252                 if (inc_recurse && cur_flist->parent_ndx >= 0) {
2253                         struct file_struct *fp = dir_flist->files[cur_flist->parent_ndx];
2254                         if (solo_file)
2255                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2256                         else
2257                                 f_name(fp, fbuf);
2258                         ndx = cur_flist->ndx_start - 1;
2259                         recv_generator(fbuf, fp, ndx, itemizing, code, f_out);
2260                         if (delete_during && dry_run < 2 && !list_only
2261                          && !(fp->flags & FLAG_MISSING_DIR)) {
2262                                 if (fp->flags & FLAG_CONTENT_DIR) {
2263                                         dev_t dirdev;
2264                                         if (one_file_system) {
2265                                                 uint32 *devp = F_DIR_DEV_P(fp);
2266                                                 dirdev = MAKEDEV(DEV_MAJOR(devp), DEV_MINOR(devp));
2267                                         } else
2268                                                 dirdev = MAKEDEV(0, 0);
2269                                         delete_in_dir(fbuf, fp, &dirdev);
2270                                 } else
2271                                         change_local_filter_dir(fbuf, strlen(fbuf), F_DEPTH(fp));
2272                         }
2273                 }
2274                 for (i = cur_flist->low; i <= cur_flist->high; i++) {
2275                         struct file_struct *file = cur_flist->sorted[i];
2276
2277                         if (!F_IS_ACTIVE(file))
2278                                 continue;
2279
2280                         if (unsort_ndx)
2281                                 ndx = F_NDX(file);
2282                         else
2283                                 ndx = i + cur_flist->ndx_start;
2284
2285                         if (solo_file)
2286                                 strlcpy(fbuf, solo_file, sizeof fbuf);
2287                         else
2288                                 f_name(file, fbuf);
2289                         recv_generator(fbuf, file, ndx, itemizing, code, f_out);
2290
2291                         check_for_finished_files(itemizing, code, 0);
2292
2293                         if (i + cur_flist->ndx_start >= next_loopchk) {
2294                                 if (allowed_lull)
2295                                         maybe_send_keepalive(time(NULL), MSK_ALLOW_FLUSH);
2296                                 else
2297                                         maybe_flush_socket(0);
2298                                 next_loopchk += loopchk_limit;
2299                         }
2300                 }
2301
2302                 if (!inc_recurse) {
2303                         write_ndx(f_out, NDX_DONE);
2304                         break;
2305                 }
2306
2307                 while (1) {
2308                         check_for_finished_files(itemizing, code, 1);
2309                         if (cur_flist->next || flist_eof)
2310                                 break;
2311                         wait_for_receiver();
2312                 }
2313         } while ((cur_flist = cur_flist->next) != NULL);
2314
2315         if (delete_during)
2316                 delete_in_dir(NULL, NULL, &dev_zero);
2317         phase++;
2318         if (DEBUG_GTE(GENR, 1))
2319                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2320
2321         while (1) {
2322                 check_for_finished_files(itemizing, code, 1);
2323                 if (msgdone_cnt)
2324                         break;
2325                 wait_for_receiver();
2326         }
2327
2328         phase++;
2329         if (DEBUG_GTE(GENR, 1))
2330                 rprintf(FINFO, "generate_files phase=%d\n", phase);
2331
2332         write_ndx(f_out, NDX_DONE);
2333
2334         /* Reduce round-trip lag-time for a useless delay-updates phase. */
2335         if (protocol_version >= 29 && EARLY_DELAY_DONE_MSG())
2336                 write_ndx(f_out, NDX_DONE);
2337
2338         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG()) {
2339                 if ((INFO_GTE(STATS, 2) && (delete_mode || force_delete)) || read_batch)
2340                         write_del_stats(f_out);
2341                 if (EARLY_DELAY_DONE_MSG()) /* Can't send this before delay */
2342                         write_ndx(f_out, NDX_DONE);
2343         }
2344
2345         /* Read MSG_DONE for the redo phase (and any prior messages). */
2346         while (1) {
2347                 check_for_finished_files(itemizing, code, 0);
2348                 if (msgdone_cnt > 1)
2349                         break;
2350                 wait_for_receiver();
2351         }
2352
2353         if (protocol_version >= 29) {
2354                 phase++;
2355                 if (DEBUG_GTE(GENR, 1))
2356                         rprintf(FINFO, "generate_files phase=%d\n", phase);
2357                 if (!EARLY_DELAY_DONE_MSG()) {
2358                         write_ndx(f_out, NDX_DONE);
2359                         if (protocol_version >= 31 && EARLY_DELETE_DONE_MSG())
2360                                 write_ndx(f_out, NDX_DONE);
2361                 }
2362                 /* Read MSG_DONE for delay-updates phase & prior messages. */
2363                 while (msgdone_cnt == 2)
2364                         wait_for_receiver();
2365         }
2366
2367         info_levels[INFO_FLIST] = save_info_flist;
2368         info_levels[INFO_PROGRESS] = save_info_progress;
2369
2370         if (delete_during == 2)
2371                 do_delayed_deletions(fbuf);
2372         if (delete_after && !solo_file && file_total > 0)
2373                 do_delete_pass();
2374
2375         if (max_delete >= 0 && skipped_deletes) {
2376                 rprintf(FWARNING,
2377                         "Deletions stopped due to --max-delete limit (%d skipped)\n",
2378                         skipped_deletes);
2379                 io_error |= IOERR_DEL_LIMIT;
2380         }
2381
2382         if (protocol_version >= 31) {
2383                 if (!EARLY_DELETE_DONE_MSG()) {
2384                         if (INFO_GTE(STATS, 2) || read_batch)
2385                                 write_del_stats(f_out);
2386                         write_ndx(f_out, NDX_DONE);
2387                 }
2388
2389                 /* Read MSG_DONE for late-delete phase & prior messages. */
2390                 while (msgdone_cnt == 3)
2391                         wait_for_receiver();
2392         }
2393
2394         if ((need_retouch_dir_perms || need_retouch_dir_times)
2395          && dir_tweaking && (!inc_recurse || delete_during == 2))
2396                 touch_up_dirs(dir_flist, -1);
2397
2398         if (DEBUG_GTE(GENR, 1))
2399                 rprintf(FINFO, "generate_files finished\n");
2400 }