receiver.c

   1 /*
   2  * Routines only used by the receiving process.
   3  *
   4  * Copyright (C) 1996-2000 Andrew Tridgell
   5  * Copyright (C) 1996 Paul Mackerras
   6  * Copyright (C) 2003-2009 Wayne Davison
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, visit the http://fsf.org website.
  20  */
  21
  22 #include "rsync.h"
  23
  24 extern int verbose;
  25 extern int dry_run;
  26 extern int do_xfers;
  27 extern int am_server;
  28 extern int do_progress;
  29 extern int inc_recurse;
  30 extern int log_before_transfer;
  31 extern int stdout_format_has_i;
  32 extern int logfile_format_has_i;
  33 extern int csum_length;
  34 extern int read_batch;
  35 extern int write_batch;
  36 extern int batch_gen_fd;
  37 extern int protocol_version;
  38 extern int relative_paths;
  39 extern int preserve_hard_links;
  40 extern int preserve_perms;
  41 extern int preserve_xattrs;
  42 extern int basis_dir_cnt;
  43 extern int make_backups;
  44 extern int cleanup_got_literal;
  45 extern int remove_source_files;
  46 extern int append_mode;
  47 extern int sparse_files;
  48 extern int keep_partial;
  49 extern int checksum_seed;
  50 extern int inplace;
  51 extern int delay_updates;
  52 extern mode_t orig_umask;
  53 extern struct stats stats;
  54 extern char *tmpdir;
  55 extern char *partial_dir;
  56 extern char *basis_dir[MAX_BASIS_DIRS+1];
  57 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  58 extern struct filter_list_struct daemon_filter_list;
  59
  60 static struct bitbag *delayed_bits = NULL;
  61 static int phase = 0, redoing = 0;
  62 static flist_ndx_list batch_redo_list;
  63 /* We're either updating the basis file or an identical copy: */
  64 static int updating_basis_or_equiv;
  65
  66 /*
  67  * get_tmpname() - create a tmp filename for a given filename
  68  *
  69  *   If a tmpdir is defined, use that as the directory to
  70  *   put it in.  Otherwise, the tmp filename is in the same
  71  *   directory as the given name.  Note that there may be no
  72  *   directory at all in the given name!
  73  *
  74  *   The tmp filename is basically the given filename with a
  75  *   dot prepended, and .XXXXXX appended (for mkstemp() to
  76  *   put its unique gunk in).  Take care to not exceed
  77  *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
  78  *   the basename basically becomes 8 chars longer. In that
  79  *   case, the original name is shortened sufficiently to
  80  *   make it all fit.
  81  *
  82  *   Of course, there's no real reason for the tmp name to
  83  *   look like the original, except to satisfy us humans.
  84  *   As long as it's unique, rsync will work.
  85  */
  86
  87 int get_tmpname(char *fnametmp, const char *fname)
  88 {
  89         int maxname, added, length = 0;
  90         const char *f;
  91
  92         if (tmpdir) {
  93                 /* Note: this can't overflow, so the return value is safe */
  94                 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
  95                 fnametmp[length++] = '/';
  96         }
  97
  98         if ((f = strrchr(fname, '/')) != NULL) {
  99                 ++f;
 100                 if (!tmpdir) {
 101                         length = f - fname;
 102                         /* copy up to and including the slash */
 103                         strlcpy(fnametmp, fname, length + 1);
 104                 }
 105         } else
 106                 f = fname;
 107         fnametmp[length++] = '.';
 108
 109         /* The maxname value is bufsize, and includes space for the '\0'.
 110          * (Note that NAME_MAX get -8 for the leading '.' above.) */
 111         maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
 112
 113         if (maxname < 1) {
 114                 rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
 115                 fnametmp[0] = '\0';
 116                 return 0;
 117         }
 118
 119         added = strlcpy(fnametmp + length, f, maxname);
 120         if (added >= maxname)
 121                 added = maxname - 1;
 122         memcpy(fnametmp + length + added, ".XXXXXX", 8);
 123
 124         return 1;
 125 }
 126
 127 /* Opens a temporary file for writing.
 128  * Success: Writes name into fnametmp, returns fd.
 129  * Failure: Clobbers fnametmp, returns -1.
 130  * Calling cleanup_set() is the caller's job. */
 131 int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
 132 {
 133         int fd;
 134
 135         if (!get_tmpname(fnametmp, fname))
 136                 return -1;
 137
 138         /* We initially set the perms without the setuid/setgid bits or group
 139          * access to ensure that there is no race condition.  They will be
 140          * correctly updated after the right owner and group info is set.
 141          * (Thanks to snabb@epipe.fi for pointing this out.) */
 142         fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 143
 144 #if 0
 145         /* In most cases parent directories will already exist because their
 146          * information should have been previously transferred, but that may
 147          * not be the case with -R */
 148         if (fd == -1 && relative_paths && errno == ENOENT
 149             && create_directory_path(fnametmp) == 0) {
 150                 /* Get back to name with XXXXXX in it. */
 151                 get_tmpname(fnametmp, fname);
 152                 fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 153         }
 154 #endif
 155
 156         if (fd == -1) {
 157                 rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
 158                         full_fname(fnametmp));
 159                 return -1;
 160         }
 161
 162         return fd;
 163 }
 164
 165 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 166                         const char *fname, int fd, OFF_T total_size)
 167 {
 168         static char file_sum1[MAX_DIGEST_LEN];
 169         static char file_sum2[MAX_DIGEST_LEN];
 170         struct map_struct *mapbuf;
 171         struct sum_struct sum;
 172         int32 len, sum_len;
 173         OFF_T offset = 0;
 174         OFF_T offset2;
 175         char *data;
 176         int32 i;
 177         char *map = NULL;
 178
 179         read_sum_head(f_in, &sum);
 180
 181         if (fd_r >= 0 && size_r > 0) {
 182                 int32 read_size = MAX(sum.blength * 2, 16*1024);
 183                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
 184                 if (verbose > 2) {
 185                         rprintf(FINFO, "recv mapped %s of size %.0f\n",
 186                                 fname_r, (double)size_r);
 187                 }
 188         } else
 189                 mapbuf = NULL;
 190
 191         sum_init(checksum_seed);
 192
 193         if (append_mode > 0) {
 194                 OFF_T j;
 195                 sum.flength = (OFF_T)sum.count * sum.blength;
 196                 if (sum.remainder)
 197                         sum.flength -= sum.blength - sum.remainder;
 198                 if (append_mode == 2) {
 199                         for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
 200                                 if (do_progress)
 201                                         show_progress(offset, total_size);
 202                                 sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
 203                                            CHUNK_SIZE);
 204                                 offset = j;
 205                         }
 206                         if (offset < sum.flength) {
 207                                 int32 len = (int32)(sum.flength - offset);
 208                                 if (do_progress)
 209                                         show_progress(offset, total_size);
 210                                 sum_update(map_ptr(mapbuf, offset, len), len);
 211                         }
 212                 }
 213                 offset = sum.flength;
 214                 if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
 215                         rsyserr(FERROR_XFER, errno, "lseek of %s returned %.0f, not %.0f",
 216                                 full_fname(fname), (double)j, (double)offset);
 217                         exit_cleanup(RERR_FILEIO);
 218                 }
 219         }
 220
 221         while ((i = recv_token(f_in, &data)) != 0) {
 222                 if (do_progress)
 223                         show_progress(offset, total_size);
 224
 225                 if (i > 0) {
 226                         if (verbose > 3) {
 227                                 rprintf(FINFO,"data recv %d at %.0f\n",
 228                                         i,(double)offset);
 229                         }
 230
 231                         stats.literal_data += i;
 232                         cleanup_got_literal = 1;
 233
 234                         sum_update(data, i);
 235
 236                         if (fd != -1 && write_file(fd,data,i) != i)
 237                                 goto report_write_error;
 238                         offset += i;
 239                         continue;
 240                 }
 241
 242                 i = -(i+1);
 243                 offset2 = i * (OFF_T)sum.blength;
 244                 len = sum.blength;
 245                 if (i == (int)sum.count-1 && sum.remainder != 0)
 246                         len = sum.remainder;
 247
 248                 stats.matched_data += len;
 249
 250                 if (verbose > 3) {
 251                         rprintf(FINFO,
 252                                 "chunk[%d] of size %ld at %.0f offset=%.0f%s\n",
 253                                 i, (long)len, (double)offset2, (double)offset,
 254                                 updating_basis_or_equiv && offset == offset2 ? " (seek)" : "");
 255                 }
 256
 257                 if (mapbuf) {
 258                         map = map_ptr(mapbuf,offset2,len);
 259
 260                         see_token(map, len);
 261                         sum_update(map, len);
 262                 }
 263
 264                 if (updating_basis_or_equiv) {
 265                         if (offset == offset2 && fd != -1) {
 266                                 OFF_T pos;
 267                                 if (flush_write_file(fd) < 0)
 268                                         goto report_write_error;
 269                                 offset += len;
 270                                 if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
 271                                         rsyserr(FERROR_XFER, errno,
 272                                                 "lseek of %s returned %.0f, not %.0f",
 273                                                 full_fname(fname),
 274                                                 (double)pos, (double)offset);
 275                                         exit_cleanup(RERR_FILEIO);
 276                                 }
 277                                 continue;
 278                         }
 279                 }
 280                 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
 281                         goto report_write_error;
 282                 offset += len;
 283         }
 284
 285         if (flush_write_file(fd) < 0)
 286                 goto report_write_error;
 287
 288 #ifdef HAVE_FTRUNCATE
 289         if (inplace && fd != -1
 290          && ftruncate(fd, offset) < 0) {
 291                 rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
 292                         full_fname(fname));
 293         }
 294 #endif
 295
 296         if (do_progress)
 297                 end_progress(total_size);
 298
 299         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 300             report_write_error:
 301                 rsyserr(FERROR_XFER, errno, "write failed on %s",
 302                         full_fname(fname));
 303                 exit_cleanup(RERR_FILEIO);
 304         }
 305
 306         sum_len = sum_end(file_sum1);
 307
 308         if (mapbuf)
 309                 unmap_file(mapbuf);
 310
 311         read_buf(f_in, file_sum2, sum_len);
 312         if (verbose > 2)
 313                 rprintf(FINFO,"got file_sum\n");
 314         if (fd != -1 && memcmp(file_sum1, file_sum2, sum_len) != 0)
 315                 return 0;
 316         return 1;
 317 }
 318
 319
 320 static void discard_receive_data(int f_in, OFF_T length)
 321 {
 322         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 323 }
 324
 325 static void handle_delayed_updates(char *local_name)
 326 {
 327         char *fname, *partialptr;
 328         int ndx;
 329
 330         for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
 331                 struct file_struct *file = cur_flist->files[ndx];
 332                 fname = local_name ? local_name : f_name(file, NULL);
 333                 if ((partialptr = partial_dir_fname(fname)) != NULL) {
 334                         if (make_backups > 0 && !make_backup(fname))
 335                                 continue;
 336                         if (verbose > 2) {
 337                                 rprintf(FINFO, "renaming %s to %s\n",
 338                                         partialptr, fname);
 339                         }
 340                         /* We don't use robust_rename() here because the
 341                          * partial-dir must be on the same drive. */
 342                         if (do_rename(partialptr, fname) < 0) {
 343                                 rsyserr(FERROR_XFER, errno,
 344                                         "rename failed for %s (from %s)",
 345                                         full_fname(fname), partialptr);
 346                         } else {
 347                                 if (remove_source_files
 348                                  || (preserve_hard_links && F_IS_HLINKED(file)))
 349                                         send_msg_int(MSG_SUCCESS, ndx);
 350                                 handle_partial_dir(partialptr, PDIR_DELETE);
 351                         }
 352                 }
 353         }
 354 }
 355
 356 static void no_batched_update(int ndx, BOOL is_redo)
 357 {
 358         struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
 359         struct file_struct *file = flist->files[ndx - flist->ndx_start];
 360
 361         rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
 362                 is_redo ? " resend of" : "", f_name(file, NULL));
 363
 364         if (inc_recurse && !dry_run)
 365                 send_msg_int(MSG_NO_SEND, ndx);
 366 }
 367
 368 static int we_want_redo(int desired_ndx)
 369 {
 370         static int redo_ndx = -1;
 371
 372         while (redo_ndx < desired_ndx) {
 373                 if (redo_ndx >= 0)
 374                         no_batched_update(redo_ndx, True);
 375                 if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
 376                         return 0;
 377         }
 378
 379         if (redo_ndx == desired_ndx) {
 380                 redo_ndx = -1;
 381                 return 1;
 382         }
 383
 384         return 0;
 385 }
 386
 387 static int gen_wants_ndx(int desired_ndx)
 388 {
 389         static int next_ndx = -1;
 390         static int done_cnt = 0;
 391         static BOOL got_eof = False;
 392         int flist_num = first_flist->flist_num;
 393
 394         if (got_eof)
 395                 return 0;
 396
 397         while (next_ndx < desired_ndx) {
 398                 if (inc_recurse && flist_num <= done_cnt)
 399                         return 0;
 400                 if (next_ndx >= 0)
 401                         no_batched_update(next_ndx, False);
 402                 if ((next_ndx = read_int(batch_gen_fd)) < 0) {
 403                         if (inc_recurse) {
 404                                 done_cnt++;
 405                                 continue;
 406                         }
 407                         got_eof = True;
 408                         return 0;
 409                 }
 410         }
 411
 412         if (next_ndx == desired_ndx) {
 413                 next_ndx = -1;
 414                 return 1;
 415         }
 416
 417         return 0;
 418 }
 419
 420 /**
 421  * main routine for receiver process.
 422  *
 423  * Receiver process runs on the same host as the generator process. */
 424 int recv_files(int f_in, char *local_name)
 425 {
 426         int fd1,fd2;
 427         STRUCT_STAT st;
 428         int iflags, xlen;
 429         char *fname, fbuf[MAXPATHLEN];
 430         char xname[MAXPATHLEN];
 431         char fnametmp[MAXPATHLEN];
 432         char *fnamecmp, *partialptr;
 433         char fnamecmpbuf[MAXPATHLEN];
 434         uchar fnamecmp_type;
 435         struct file_struct *file;
 436         struct stats initial_stats;
 437         int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
 438         enum logcode log_code = log_before_transfer ? FLOG : FINFO;
 439         int max_phase = protocol_version >= 29 ? 2 : 1;
 440         int dflt_perms = (ACCESSPERMS & ~orig_umask);
 441 #ifdef SUPPORT_ACLS
 442         const char *parent_dirname = "";
 443 #endif
 444         int ndx, recv_ok;
 445
 446         if (verbose > 2)
 447                 rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
 448
 449         if (delay_updates)
 450                 delayed_bits = bitbag_create(cur_flist->used + 1);
 451
 452         while (1) {
 453                 cleanup_disable();
 454
 455                 /* This call also sets cur_flist. */
 456                 ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
 457                                          xname, &xlen);
 458                 if (ndx == NDX_DONE) {
 459                         if (inc_recurse && first_flist) {
 460                                 if (read_batch)
 461                                         gen_wants_ndx(first_flist->used + first_flist->ndx_start);
 462                                 flist_free(first_flist);
 463                                 if (first_flist)
 464                                         continue;
 465                         } else if (read_batch && first_flist)
 466                                 gen_wants_ndx(first_flist->used);
 467                         if (++phase > max_phase)
 468                                 break;
 469                         if (verbose > 2)
 470                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 471                         if (phase == 2 && delay_updates)
 472                                 handle_delayed_updates(local_name);
 473                         send_msg(MSG_DONE, "", 0, 0);
 474                         continue;
 475                 }
 476
 477                 if (ndx - cur_flist->ndx_start >= 0)
 478                         file = cur_flist->files[ndx - cur_flist->ndx_start];
 479                 else
 480                         file = dir_flist->files[cur_flist->parent_ndx];
 481                 fname = local_name ? local_name : f_name(file, fbuf);
 482
 483                 if (verbose > 2)
 484                         rprintf(FINFO, "recv_files(%s)\n", fname);
 485
 486 #ifdef SUPPORT_XATTRS
 487                 if (iflags & ITEM_REPORT_XATTR && do_xfers)
 488                         recv_xattr_request(file, f_in);
 489 #endif
 490
 491                 if (!(iflags & ITEM_TRANSFER)) {
 492                         maybe_log_item(file, iflags, itemizing, xname);
 493 #ifdef SUPPORT_XATTRS
 494                         if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers)
 495                                 set_file_attrs(fname, file, NULL, fname, 0);
 496 #endif
 497                         continue;
 498                 }
 499                 if (phase == 2) {
 500                         rprintf(FERROR,
 501                                 "got transfer request in phase 2 [%s]\n",
 502                                 who_am_i());
 503                         exit_cleanup(RERR_PROTOCOL);
 504                 }
 505
 506                 if (file->flags & FLAG_FILE_SENT) {
 507                         if (csum_length == SHORT_SUM_LENGTH) {
 508                                 if (keep_partial && !partial_dir)
 509                                         make_backups = -make_backups; /* prevents double backup */
 510                                 if (append_mode)
 511                                         sparse_files = -sparse_files;
 512                                 append_mode = -append_mode;
 513                                 csum_length = SUM_LENGTH;
 514                                 redoing = 1;
 515                         }
 516                 } else {
 517                         if (csum_length != SHORT_SUM_LENGTH) {
 518                                 if (keep_partial && !partial_dir)
 519                                         make_backups = -make_backups;
 520                                 if (append_mode)
 521                                         sparse_files = -sparse_files;
 522                                 append_mode = -append_mode;
 523                                 csum_length = SHORT_SUM_LENGTH;
 524                                 redoing = 0;
 525                         }
 526                 }
 527
 528                 if (!am_server && do_progress)
 529                         set_current_file_index(file, ndx);
 530                 stats.num_transferred_files++;
 531                 stats.total_transferred_size += F_LENGTH(file);
 532
 533                 cleanup_got_literal = 0;
 534
 535                 if (daemon_filter_list.head
 536                     && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
 537                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 538                         exit_cleanup(RERR_PROTOCOL);
 539                 }
 540
 541                 if (read_batch) {
 542                         int wanted = redoing
 543                                    ? we_want_redo(ndx)
 544                                    : gen_wants_ndx(ndx);
 545                         if (!wanted) {
 546                                 rprintf(FINFO,
 547                                         "(Skipping batched update for%s \"%s\")\n",
 548                                         redoing ? " resend of" : "",
 549                                         fname);
 550                                 discard_receive_data(f_in, F_LENGTH(file));
 551                                 file->flags |= FLAG_FILE_SENT;
 552                                 continue;
 553                         }
 554                 }
 555
 556                 if (!do_xfers) { /* log the transfer */
 557                         log_item(FCLIENT, file, &stats, iflags, NULL);
 558                         if (read_batch)
 559                                 discard_receive_data(f_in, F_LENGTH(file));
 560                         continue;
 561                 }
 562                 if (write_batch < 0) {
 563                         log_item(FCLIENT, file, &stats, iflags, NULL);
 564                         if (!am_server)
 565                                 discard_receive_data(f_in, F_LENGTH(file));
 566                         continue;
 567                 }
 568
 569                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 570
 571                 if (protocol_version >= 29) {
 572                         switch (fnamecmp_type) {
 573                         case FNAMECMP_FNAME:
 574                                 fnamecmp = fname;
 575                                 break;
 576                         case FNAMECMP_PARTIAL_DIR:
 577                                 fnamecmp = partialptr;
 578                                 break;
 579                         case FNAMECMP_BACKUP:
 580                                 fnamecmp = get_backup_name(fname);
 581                                 break;
 582                         case FNAMECMP_FUZZY:
 583                                 if (file->dirname) {
 584                                         pathjoin(fnamecmpbuf, MAXPATHLEN,
 585                                                  file->dirname, xname);
 586                                         fnamecmp = fnamecmpbuf;
 587                                 } else
 588                                         fnamecmp = xname;
 589                                 break;
 590                         default:
 591                                 if (fnamecmp_type >= basis_dir_cnt) {
 592                                         rprintf(FERROR,
 593                                                 "invalid basis_dir index: %d.\n",
 594                                                 fnamecmp_type);
 595                                         exit_cleanup(RERR_PROTOCOL);
 596                                 }
 597                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 598                                          basis_dir[fnamecmp_type], fname);
 599                                 fnamecmp = fnamecmpbuf;
 600                                 break;
 601                         }
 602                         if (!fnamecmp || (daemon_filter_list.head
 603                           && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
 604                                 fnamecmp = fname;
 605                                 fnamecmp_type = FNAMECMP_FNAME;
 606                         }
 607                 } else {
 608                         /* Reminder: --inplace && --partial-dir are never
 609                          * enabled at the same time. */
 610                         if (inplace && make_backups > 0) {
 611                                 if (!(fnamecmp = get_backup_name(fname)))
 612                                         fnamecmp = fname;
 613                                 else
 614                                         fnamecmp_type = FNAMECMP_BACKUP;
 615                         } else if (partial_dir && partialptr)
 616                                 fnamecmp = partialptr;
 617                         else
 618                                 fnamecmp = fname;
 619                 }
 620
 621                 initial_stats = stats;
 622
 623                 /* open the file */
 624                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 625
 626                 if (fd1 == -1 && protocol_version < 29) {
 627                         if (fnamecmp != fname) {
 628                                 fnamecmp = fname;
 629                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 630                         }
 631
 632                         if (fd1 == -1 && basis_dir[0]) {
 633                                 /* pre-29 allowed only one alternate basis */
 634                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 635                                          basis_dir[0], fname);
 636                                 fnamecmp = fnamecmpbuf;
 637                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 638                         }
 639                 }
 640
 641                 updating_basis_or_equiv = inplace
 642                     && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
 643
 644                 if (fd1 == -1) {
 645                         st.st_mode = 0;
 646                         st.st_size = 0;
 647                 } else if (do_fstat(fd1,&st) != 0) {
 648                         rsyserr(FERROR_XFER, errno, "fstat %s failed",
 649                                 full_fname(fnamecmp));
 650                         discard_receive_data(f_in, F_LENGTH(file));
 651                         close(fd1);
 652                         if (inc_recurse)
 653                                 send_msg_int(MSG_NO_SEND, ndx);
 654                         continue;
 655                 }
 656
 657                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 658                         /* this special handling for directories
 659                          * wouldn't be necessary if robust_rename()
 660                          * and the underlying robust_unlink could cope
 661                          * with directories
 662                          */
 663                         rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
 664                                 full_fname(fnamecmp));
 665                         discard_receive_data(f_in, F_LENGTH(file));
 666                         close(fd1);
 667                         if (inc_recurse)
 668                                 send_msg_int(MSG_NO_SEND, ndx);
 669                         continue;
 670                 }
 671
 672                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 673                         close(fd1);
 674                         fd1 = -1;
 675                 }
 676
 677                 /* If we're not preserving permissions, change the file-list's
 678                  * mode based on the local permissions and some heuristics. */
 679                 if (!preserve_perms) {
 680                         int exists = fd1 != -1;
 681 #ifdef SUPPORT_ACLS
 682                         const char *dn = file->dirname ? file->dirname : ".";
 683                         if (parent_dirname != dn
 684                          && strcmp(parent_dirname, dn) != 0) {
 685                                 dflt_perms = default_perms_for_dir(dn);
 686                                 parent_dirname = dn;
 687                         }
 688 #endif
 689                         file->mode = dest_mode(file->mode, st.st_mode,
 690                                                dflt_perms, exists);
 691                 }
 692
 693                 /* We now check to see if we are writing the file "inplace" */
 694                 if (inplace)  {
 695                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
 696                         if (fd2 == -1) {
 697                                 rsyserr(FERROR_XFER, errno, "open %s failed",
 698                                         full_fname(fname));
 699                         }
 700                 } else {
 701                         fd2 = open_tmpfile(fnametmp, fname, file);
 702                         if (fd2 != -1)
 703                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 704                 }
 705
 706                 if (fd2 == -1) {
 707                         discard_receive_data(f_in, F_LENGTH(file));
 708                         if (fd1 != -1)
 709                                 close(fd1);
 710                         if (inc_recurse)
 711                                 send_msg_int(MSG_NO_SEND, ndx);
 712                         continue;
 713                 }
 714
 715                 /* log the transfer */
 716                 if (log_before_transfer)
 717                         log_item(FCLIENT, file, &initial_stats, iflags, NULL);
 718                 else if (!am_server && verbose && do_progress)
 719                         rprintf(FINFO, "%s\n", fname);
 720
 721                 /* recv file data */
 722                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 723                                        fname, fd2, F_LENGTH(file));
 724
 725                 log_item(log_code, file, &initial_stats, iflags, NULL);
 726
 727                 if (fd1 != -1)
 728                         close(fd1);
 729                 if (close(fd2) < 0) {
 730                         rsyserr(FERROR, errno, "close failed on %s",
 731                                 full_fname(fnametmp));
 732                         exit_cleanup(RERR_FILEIO);
 733                 }
 734
 735                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 736                         if (partialptr == fname)
 737                                 partialptr = NULL;
 738                         if (!finish_transfer(fname, fnametmp, fnamecmp,
 739                                              partialptr, file, recv_ok, 1))
 740                                 recv_ok = -1;
 741                         else if (fnamecmp == partialptr) {
 742                                 do_unlink(partialptr);
 743                                 handle_partial_dir(partialptr, PDIR_DELETE);
 744                         }
 745                 } else if (keep_partial && partialptr) {
 746                         if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
 747                                 rprintf(FERROR,
 748                                     "Unable to create partial-dir for %s -- discarding %s.\n",
 749                                     local_name ? local_name : f_name(file, NULL),
 750                                     recv_ok ? "completed file" : "partial file");
 751                                 do_unlink(fnametmp);
 752                                 recv_ok = -1;
 753                         } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
 754                                                     file, recv_ok, !partial_dir))
 755                                 recv_ok = -1;
 756                         else if (delay_updates && recv_ok) {
 757                                 bitbag_set_bit(delayed_bits, ndx);
 758                                 recv_ok = 2;
 759                         } else
 760                                 partialptr = NULL;
 761                 } else
 762                         do_unlink(fnametmp);
 763
 764                 cleanup_disable();
 765
 766                 if (read_batch)
 767                         file->flags |= FLAG_FILE_SENT;
 768
 769                 switch (recv_ok) {
 770                 case 2:
 771                         break;
 772                 case 1:
 773                         if (remove_source_files || inc_recurse
 774                          || (preserve_hard_links && F_IS_HLINKED(file)))
 775                                 send_msg_int(MSG_SUCCESS, ndx);
 776                         break;
 777                 case 0: {
 778                         enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
 779                         if (msgtype == FERROR_XFER || verbose) {
 780                                 char *errstr, *redostr, *keptstr;
 781                                 if (!(keep_partial && partialptr) && !inplace)
 782                                         keptstr = "discarded";
 783                                 else if (partial_dir)
 784                                         keptstr = "put into partial-dir";
 785                                 else
 786                                         keptstr = "retained";
 787                                 if (msgtype == FERROR_XFER) {
 788                                         errstr = "ERROR";
 789                                         redostr = "";
 790                                 } else {
 791                                         errstr = "WARNING";
 792                                         redostr = read_batch ? " (may try again)"
 793                                                              : " (will try again)";
 794                                 }
 795                                 rprintf(msgtype,
 796                                         "%s: %s failed verification -- update %s%s.\n",
 797                                         errstr, local_name ? f_name(file, NULL) : fname,
 798                                         keptstr, redostr);
 799                         }
 800                         if (!redoing) {
 801                                 if (read_batch)
 802                                         flist_ndx_push(&batch_redo_list, ndx);
 803                                 send_msg_int(MSG_REDO, ndx);
 804                                 file->flags |= FLAG_FILE_SENT;
 805                         } else if (inc_recurse)
 806                                 send_msg_int(MSG_NO_SEND, ndx);
 807                         break;
 808                     }
 809                 case -1:
 810                         if (inc_recurse)
 811                                 send_msg_int(MSG_NO_SEND, ndx);
 812                         break;
 813                 }
 814         }
 815         if (make_backups < 0)
 816                 make_backups = -make_backups;
 817
 818         if (phase == 2 && delay_updates) /* for protocol_version < 29 */
 819                 handle_delayed_updates(local_name);
 820
 821         if (verbose > 2)
 822                 rprintf(FINFO,"recv_files finished\n");
 823
 824         return 0;
 825 }