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[];
  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\n",
 253                                 i, (long)len, (double)offset2, (double)offset);
 254                 }
 255
 256                 if (mapbuf) {
 257                         map = map_ptr(mapbuf,offset2,len);
 258
 259                         see_token(map, len);
 260                         sum_update(map, len);
 261                 }
 262
 263                 if (updating_basis_or_equiv) {
 264                         if (offset == offset2 && fd != -1) {
 265                                 OFF_T pos;
 266                                 if (flush_write_file(fd) < 0)
 267                                         goto report_write_error;
 268                                 offset += len;
 269                                 if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
 270                                         rsyserr(FERROR_XFER, errno,
 271                                                 "lseek of %s returned %.0f, not %.0f",
 272                                                 full_fname(fname),
 273                                                 (double)pos, (double)offset);
 274                                         exit_cleanup(RERR_FILEIO);
 275                                 }
 276                                 continue;
 277                         }
 278                 }
 279                 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
 280                         goto report_write_error;
 281                 offset += len;
 282         }
 283
 284         if (flush_write_file(fd) < 0)
 285                 goto report_write_error;
 286
 287 #ifdef HAVE_FTRUNCATE
 288         if (inplace && fd != -1
 289          && ftruncate(fd, offset) < 0) {
 290                 rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
 291                         full_fname(fname));
 292         }
 293 #endif
 294
 295         if (do_progress)
 296                 end_progress(total_size);
 297
 298         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 299             report_write_error:
 300                 rsyserr(FERROR_XFER, errno, "write failed on %s",
 301                         full_fname(fname));
 302                 exit_cleanup(RERR_FILEIO);
 303         }
 304
 305         sum_len = sum_end(file_sum1);
 306
 307         if (mapbuf)
 308                 unmap_file(mapbuf);
 309
 310         read_buf(f_in, file_sum2, sum_len);
 311         if (verbose > 2)
 312                 rprintf(FINFO,"got file_sum\n");
 313         if (fd != -1 && memcmp(file_sum1, file_sum2, sum_len) != 0)
 314                 return 0;
 315         return 1;
 316 }
 317
 318
 319 static void discard_receive_data(int f_in, OFF_T length)
 320 {
 321         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 322 }
 323
 324 static void handle_delayed_updates(char *local_name)
 325 {
 326         char *fname, *partialptr;
 327         int ndx;
 328
 329         for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
 330                 struct file_struct *file = cur_flist->files[ndx];
 331                 fname = local_name ? local_name : f_name(file, NULL);
 332                 if ((partialptr = partial_dir_fname(fname)) != NULL) {
 333                         if (make_backups > 0 && !make_backup(fname))
 334                                 continue;
 335                         if (verbose > 2) {
 336                                 rprintf(FINFO, "renaming %s to %s\n",
 337                                         partialptr, fname);
 338                         }
 339                         /* We don't use robust_rename() here because the
 340                          * partial-dir must be on the same drive. */
 341                         if (do_rename(partialptr, fname) < 0) {
 342                                 rsyserr(FERROR_XFER, errno,
 343                                         "rename failed for %s (from %s)",
 344                                         full_fname(fname), partialptr);
 345                         } else {
 346                                 if (remove_source_files
 347                                  || (preserve_hard_links && F_IS_HLINKED(file)))
 348                                         send_msg_int(MSG_SUCCESS, ndx);
 349                                 handle_partial_dir(partialptr, PDIR_DELETE);
 350                         }
 351                 }
 352         }
 353 }
 354
 355 static void no_batched_update(int ndx, BOOL is_redo)
 356 {
 357         struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
 358         struct file_struct *file = flist->files[ndx - flist->ndx_start];
 359
 360         rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
 361                 is_redo ? " resend of" : "", f_name(file, NULL));
 362
 363         if (inc_recurse && !dry_run)
 364                 send_msg_int(MSG_NO_SEND, ndx);
 365 }
 366
 367 static int we_want_redo(int desired_ndx)
 368 {
 369         static int redo_ndx = -1;
 370
 371         while (redo_ndx < desired_ndx) {
 372                 if (redo_ndx >= 0)
 373                         no_batched_update(redo_ndx, True);
 374                 if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
 375                         return 0;
 376         }
 377
 378         if (redo_ndx == desired_ndx) {
 379                 redo_ndx = -1;
 380                 return 1;
 381         }
 382
 383         return 0;
 384 }
 385
 386 static int gen_wants_ndx(int desired_ndx)
 387 {
 388         static int next_ndx = -1;
 389         static int done_cnt = 0;
 390         static BOOL got_eof = False;
 391         int flist_num = first_flist->flist_num;
 392
 393         if (got_eof)
 394                 return 0;
 395
 396         while (next_ndx < desired_ndx) {
 397                 if (inc_recurse && flist_num <= done_cnt)
 398                         return 0;
 399                 if (next_ndx >= 0)
 400                         no_batched_update(next_ndx, False);
 401                 if ((next_ndx = read_int(batch_gen_fd)) < 0) {
 402                         if (inc_recurse) {
 403                                 done_cnt++;
 404                                 continue;
 405                         }
 406                         got_eof = True;
 407                         return 0;
 408                 }
 409         }
 410
 411         if (next_ndx == desired_ndx) {
 412                 next_ndx = -1;
 413                 return 1;
 414         }
 415
 416         return 0;
 417 }
 418
 419 /**
 420  * main routine for receiver process.
 421  *
 422  * Receiver process runs on the same host as the generator process. */
 423 int recv_files(int f_in, char *local_name)
 424 {
 425         int fd1,fd2;
 426         STRUCT_STAT st;
 427         int iflags, xlen;
 428         char *fname, fbuf[MAXPATHLEN];
 429         char xname[MAXPATHLEN];
 430         char fnametmp[MAXPATHLEN];
 431         char *fnamecmp, *partialptr;
 432         char fnamecmpbuf[MAXPATHLEN];
 433         uchar fnamecmp_type;
 434         struct file_struct *file;
 435         struct stats initial_stats;
 436         int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
 437         enum logcode log_code = log_before_transfer ? FLOG : FINFO;
 438         int max_phase = protocol_version >= 29 ? 2 : 1;
 439         int dflt_perms = (ACCESSPERMS & ~orig_umask);
 440 #ifdef SUPPORT_ACLS
 441         const char *parent_dirname = "";
 442 #endif
 443         int ndx, recv_ok;
 444
 445         if (verbose > 2)
 446                 rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
 447
 448         if (delay_updates)
 449                 delayed_bits = bitbag_create(cur_flist->used + 1);
 450
 451         while (1) {
 452                 cleanup_disable();
 453
 454                 /* This call also sets cur_flist. */
 455                 ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
 456                                          xname, &xlen);
 457                 if (ndx == NDX_DONE) {
 458                         if (inc_recurse && first_flist) {
 459                                 if (read_batch)
 460                                         gen_wants_ndx(first_flist->used + first_flist->ndx_start);
 461                                 flist_free(first_flist);
 462                                 if (first_flist)
 463                                         continue;
 464                         } else if (read_batch && first_flist)
 465                                 gen_wants_ndx(first_flist->used);
 466                         if (++phase > max_phase)
 467                                 break;
 468                         if (verbose > 2)
 469                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 470                         if (phase == 2 && delay_updates)
 471                                 handle_delayed_updates(local_name);
 472                         send_msg(MSG_DONE, "", 0, 0);
 473                         continue;
 474                 }
 475
 476                 if (ndx - cur_flist->ndx_start >= 0)
 477                         file = cur_flist->files[ndx - cur_flist->ndx_start];
 478                 else
 479                         file = dir_flist->files[cur_flist->parent_ndx];
 480                 fname = local_name ? local_name : f_name(file, fbuf);
 481
 482                 if (verbose > 2)
 483                         rprintf(FINFO, "recv_files(%s)\n", fname);
 484
 485 #ifdef SUPPORT_XATTRS
 486                 if (iflags & ITEM_REPORT_XATTR && do_xfers)
 487                         recv_xattr_request(file, f_in);
 488 #endif
 489
 490                 if (!(iflags & ITEM_TRANSFER)) {
 491                         maybe_log_item(file, iflags, itemizing, xname);
 492 #ifdef SUPPORT_XATTRS
 493                         if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers)
 494                                 set_file_attrs(fname, file, NULL, fname, 0);
 495 #endif
 496                         continue;
 497                 }
 498                 if (phase == 2) {
 499                         rprintf(FERROR,
 500                                 "got transfer request in phase 2 [%s]\n",
 501                                 who_am_i());
 502                         exit_cleanup(RERR_PROTOCOL);
 503                 }
 504
 505                 if (file->flags & FLAG_FILE_SENT) {
 506                         if (csum_length == SHORT_SUM_LENGTH) {
 507                                 if (keep_partial && !partial_dir)
 508                                         make_backups = -make_backups; /* prevents double backup */
 509                                 if (append_mode)
 510                                         sparse_files = -sparse_files;
 511                                 append_mode = -append_mode;
 512                                 csum_length = SUM_LENGTH;
 513                                 redoing = 1;
 514                         }
 515                 } else {
 516                         if (csum_length != SHORT_SUM_LENGTH) {
 517                                 if (keep_partial && !partial_dir)
 518                                         make_backups = -make_backups;
 519                                 if (append_mode)
 520                                         sparse_files = -sparse_files;
 521                                 append_mode = -append_mode;
 522                                 csum_length = SHORT_SUM_LENGTH;
 523                                 redoing = 0;
 524                         }
 525                 }
 526
 527                 if (!am_server && do_progress)
 528                         set_current_file_index(file, ndx);
 529                 stats.num_transferred_files++;
 530                 stats.total_transferred_size += F_LENGTH(file);
 531
 532                 cleanup_got_literal = 0;
 533
 534                 if (daemon_filter_list.head
 535                     && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
 536                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 537                         exit_cleanup(RERR_PROTOCOL);
 538                 }
 539
 540                 if (read_batch) {
 541                         int wanted = redoing
 542                                    ? we_want_redo(ndx)
 543                                    : gen_wants_ndx(ndx);
 544                         if (!wanted) {
 545                                 rprintf(FINFO,
 546                                         "(Skipping batched update for%s \"%s\")\n",
 547                                         redoing ? " resend of" : "",
 548                                         fname);
 549                                 discard_receive_data(f_in, F_LENGTH(file));
 550                                 file->flags |= FLAG_FILE_SENT;
 551                                 continue;
 552                         }
 553                 }
 554
 555                 if (!do_xfers) { /* log the transfer */
 556                         log_item(FCLIENT, file, &stats, iflags, NULL);
 557                         if (read_batch)
 558                                 discard_receive_data(f_in, F_LENGTH(file));
 559                         continue;
 560                 }
 561                 if (write_batch < 0) {
 562                         log_item(FCLIENT, file, &stats, iflags, NULL);
 563                         if (!am_server)
 564                                 discard_receive_data(f_in, F_LENGTH(file));
 565                         continue;
 566                 }
 567
 568                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 569
 570                 if (protocol_version >= 29) {
 571                         switch (fnamecmp_type) {
 572                         case FNAMECMP_FNAME:
 573                                 fnamecmp = fname;
 574                                 break;
 575                         case FNAMECMP_PARTIAL_DIR:
 576                                 fnamecmp = partialptr;
 577                                 break;
 578                         case FNAMECMP_BACKUP:
 579                                 fnamecmp = get_backup_name(fname);
 580                                 break;
 581                         case FNAMECMP_FUZZY:
 582                                 if (file->dirname) {
 583                                         pathjoin(fnamecmpbuf, MAXPATHLEN,
 584                                                  file->dirname, xname);
 585                                         fnamecmp = fnamecmpbuf;
 586                                 } else
 587                                         fnamecmp = xname;
 588                                 break;
 589                         default:
 590                                 if (fnamecmp_type >= basis_dir_cnt) {
 591                                         rprintf(FERROR,
 592                                                 "invalid basis_dir index: %d.\n",
 593                                                 fnamecmp_type);
 594                                         exit_cleanup(RERR_PROTOCOL);
 595                                 }
 596                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 597                                          basis_dir[fnamecmp_type], fname);
 598                                 fnamecmp = fnamecmpbuf;
 599                                 break;
 600                         }
 601                         if (!fnamecmp || (daemon_filter_list.head
 602                           && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
 603                                 fnamecmp = fname;
 604                                 fnamecmp_type = FNAMECMP_FNAME;
 605                         }
 606                 } else {
 607                         /* Reminder: --inplace && --partial-dir are never
 608                          * enabled at the same time. */
 609                         if (inplace && make_backups > 0) {
 610                                 if (!(fnamecmp = get_backup_name(fname)))
 611                                         fnamecmp = fname;
 612                                 else
 613                                         fnamecmp_type = FNAMECMP_BACKUP;
 614                         } else if (partial_dir && partialptr)
 615                                 fnamecmp = partialptr;
 616                         else
 617                                 fnamecmp = fname;
 618                 }
 619
 620                 initial_stats = stats;
 621
 622                 /* open the file */
 623                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 624
 625                 if (fd1 == -1 && protocol_version < 29) {
 626                         if (fnamecmp != fname) {
 627                                 fnamecmp = fname;
 628                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 629                         }
 630
 631                         if (fd1 == -1 && basis_dir[0]) {
 632                                 /* pre-29 allowed only one alternate basis */
 633                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 634                                          basis_dir[0], fname);
 635                                 fnamecmp = fnamecmpbuf;
 636                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 637                         }
 638                 }
 639
 640                 updating_basis_or_equiv = inplace
 641                     && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
 642
 643                 if (fd1 == -1) {
 644                         st.st_mode = 0;
 645                         st.st_size = 0;
 646                 } else if (do_fstat(fd1,&st) != 0) {
 647                         rsyserr(FERROR_XFER, errno, "fstat %s failed",
 648                                 full_fname(fnamecmp));
 649                         discard_receive_data(f_in, F_LENGTH(file));
 650                         close(fd1);
 651                         if (inc_recurse)
 652                                 send_msg_int(MSG_NO_SEND, ndx);
 653                         continue;
 654                 }
 655
 656                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 657                         /* this special handling for directories
 658                          * wouldn't be necessary if robust_rename()
 659                          * and the underlying robust_unlink could cope
 660                          * with directories
 661                          */
 662                         rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
 663                                 full_fname(fnamecmp));
 664                         discard_receive_data(f_in, F_LENGTH(file));
 665                         close(fd1);
 666                         if (inc_recurse)
 667                                 send_msg_int(MSG_NO_SEND, ndx);
 668                         continue;
 669                 }
 670
 671                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 672                         close(fd1);
 673                         fd1 = -1;
 674                 }
 675
 676                 /* If we're not preserving permissions, change the file-list's
 677                  * mode based on the local permissions and some heuristics. */
 678                 if (!preserve_perms) {
 679                         int exists = fd1 != -1;
 680 #ifdef SUPPORT_ACLS
 681                         const char *dn = file->dirname ? file->dirname : ".";
 682                         if (parent_dirname != dn
 683                          && strcmp(parent_dirname, dn) != 0) {
 684                                 dflt_perms = default_perms_for_dir(dn);
 685                                 parent_dirname = dn;
 686                         }
 687 #endif
 688                         file->mode = dest_mode(file->mode, st.st_mode,
 689                                                dflt_perms, exists);
 690                 }
 691
 692                 /* We now check to see if we are writing the file "inplace" */
 693                 if (inplace)  {
 694                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
 695                         if (fd2 == -1) {
 696                                 rsyserr(FERROR_XFER, errno, "open %s failed",
 697                                         full_fname(fname));
 698                         }
 699                 } else {
 700                         fd2 = open_tmpfile(fnametmp, fname, file);
 701                         if (fd2 != -1)
 702                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 703                 }
 704
 705                 if (fd2 == -1) {
 706                         discard_receive_data(f_in, F_LENGTH(file));
 707                         if (fd1 != -1)
 708                                 close(fd1);
 709                         if (inc_recurse)
 710                                 send_msg_int(MSG_NO_SEND, ndx);
 711                         continue;
 712                 }
 713
 714                 /* log the transfer */
 715                 if (log_before_transfer)
 716                         log_item(FCLIENT, file, &initial_stats, iflags, NULL);
 717                 else if (!am_server && verbose && do_progress)
 718                         rprintf(FINFO, "%s\n", fname);
 719
 720                 /* recv file data */
 721                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 722                                        fname, fd2, F_LENGTH(file));
 723
 724                 log_item(log_code, file, &initial_stats, iflags, NULL);
 725
 726                 if (fd1 != -1)
 727                         close(fd1);
 728                 if (close(fd2) < 0) {
 729                         rsyserr(FERROR, errno, "close failed on %s",
 730                                 full_fname(fnametmp));
 731                         exit_cleanup(RERR_FILEIO);
 732                 }
 733
 734                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 735                         if (partialptr == fname)
 736                                 partialptr = NULL;
 737                         if (!finish_transfer(fname, fnametmp, fnamecmp,
 738                                              partialptr, file, recv_ok, 1))
 739                                 recv_ok = -1;
 740                         else if (fnamecmp == partialptr) {
 741                                 do_unlink(partialptr);
 742                                 handle_partial_dir(partialptr, PDIR_DELETE);
 743                         }
 744                 } else if (keep_partial && partialptr) {
 745                         if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
 746                                 rprintf(FERROR,
 747                                     "Unable to create partial-dir for %s -- discarding %s.\n",
 748                                     local_name ? local_name : f_name(file, NULL),
 749                                     recv_ok ? "completed file" : "partial file");
 750                                 do_unlink(fnametmp);
 751                                 recv_ok = -1;
 752                         } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
 753                                                     file, recv_ok, !partial_dir))
 754                                 recv_ok = -1;
 755                         else if (delay_updates && recv_ok) {
 756                                 bitbag_set_bit(delayed_bits, ndx);
 757                                 recv_ok = 2;
 758                         } else
 759                                 partialptr = NULL;
 760                 } else
 761                         do_unlink(fnametmp);
 762
 763                 cleanup_disable();
 764
 765                 if (read_batch)
 766                         file->flags |= FLAG_FILE_SENT;
 767
 768                 switch (recv_ok) {
 769                 case 2:
 770                         break;
 771                 case 1:
 772                         if (remove_source_files || inc_recurse
 773                          || (preserve_hard_links && F_IS_HLINKED(file)))
 774                                 send_msg_int(MSG_SUCCESS, ndx);
 775                         break;
 776                 case 0: {
 777                         enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
 778                         if (msgtype == FERROR_XFER || verbose) {
 779                                 char *errstr, *redostr, *keptstr;
 780                                 if (!(keep_partial && partialptr) && !inplace)
 781                                         keptstr = "discarded";
 782                                 else if (partial_dir)
 783                                         keptstr = "put into partial-dir";
 784                                 else
 785                                         keptstr = "retained";
 786                                 if (msgtype == FERROR_XFER) {
 787                                         errstr = "ERROR";
 788                                         redostr = "";
 789                                 } else {
 790                                         errstr = "WARNING";
 791                                         redostr = read_batch ? " (may try again)"
 792                                                              : " (will try again)";
 793                                 }
 794                                 rprintf(msgtype,
 795                                         "%s: %s failed verification -- update %s%s.\n",
 796                                         errstr, local_name ? f_name(file, NULL) : fname,
 797                                         keptstr, redostr);
 798                         }
 799                         if (!redoing) {
 800                                 if (read_batch)
 801                                         flist_ndx_push(&batch_redo_list, ndx);
 802                                 send_msg_int(MSG_REDO, ndx);
 803                                 file->flags |= FLAG_FILE_SENT;
 804                         } else if (inc_recurse)
 805                                 send_msg_int(MSG_NO_SEND, ndx);
 806                         break;
 807                     }
 808                 case -1:
 809                         if (inc_recurse)
 810                                 send_msg_int(MSG_NO_SEND, ndx);
 811                         break;
 812                 }
 813         }
 814         if (make_backups < 0)
 815                 make_backups = -make_backups;
 816
 817         if (phase == 2 && delay_updates) /* for protocol_version < 29 */
 818                 handle_delayed_updates(local_name);
 819
 820         if (verbose > 2)
 821                 rprintf(FINFO,"recv_files finished\n");
 822
 823         return 0;
 824 }