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_root;
  28 extern int am_server;
  29 extern int do_progress;
  30 extern int inc_recurse;
  31 extern int log_before_transfer;
  32 extern int stdout_format_has_i;
  33 extern int logfile_format_has_i;
  34 extern int csum_length;
  35 extern int read_batch;
  36 extern int write_batch;
  37 extern int batch_gen_fd;
  38 extern int protocol_version;
  39 extern int relative_paths;
  40 extern int preserve_hard_links;
  41 extern int preserve_perms;
  42 extern int preserve_xattrs;
  43 extern int basis_dir_cnt;
  44 extern int make_backups;
  45 extern int cleanup_got_literal;
  46 extern int remove_source_files;
  47 extern int append_mode;
  48 extern int sparse_files;
  49 extern int keep_partial;
  50 extern int checksum_seed;
  51 extern int inplace;
  52 extern int delay_updates;
  53 extern mode_t orig_umask;
  54 extern struct stats stats;
  55 extern char *tmpdir;
  56 extern char *partial_dir;
  57 extern char *basis_dir[MAX_BASIS_DIRS+1];
  58 extern struct file_list *cur_flist, *first_flist, *dir_flist;
  59 extern struct filter_list_struct daemon_filter_list;
  60
  61 static struct bitbag *delayed_bits = NULL;
  62 static int phase = 0, redoing = 0;
  63 static flist_ndx_list batch_redo_list;
  64 /* We're either updating the basis file or an identical copy: */
  65 static int updating_basis_or_equiv;
  66
  67 #define TMPNAME_SUFFIX ".XXXXXX"
  68 #define TMPNAME_SUFFIX_LEN ((int)sizeof TMPNAME_SUFFIX - 1)
  69
  70 /* get_tmpname() - create a tmp filename for a given filename
  71  *
  72  * If a tmpdir is defined, use that as the directory to put it in.  Otherwise,
  73  * the tmp filename is in the same directory as the given name.  Note that
  74  * there may be no directory at all in the given name!
  75  *
  76  * The tmp filename is basically the given filename with a dot prepended, and
  77  * .XXXXXX appended (for mkstemp() to put its unique gunk in).  We take care
  78  * to not exceed either the MAXPATHLEN or NAME_MAX, especially the last, as
  79  * the basename basically becomes 8 characters longer.  In such a case, the
  80  * original name is shortened sufficiently to make it all fit.
  81  *
  82  * Of course, the only reason the file is based on the original name is to
  83  * make it easier to figure out what purpose a temp file is serving when a
  84  * transfer is in progress. */
  85 int get_tmpname(char *fnametmp, const char *fname)
  86 {
  87         int maxname, added, length = 0;
  88         const char *f;
  89         char *suf;
  90
  91         if (tmpdir) {
  92                 /* Note: this can't overflow, so the return value is safe */
  93                 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
  94                 fnametmp[length++] = '/';
  95         }
  96
  97         if ((f = strrchr(fname, '/')) != NULL) {
  98                 ++f;
  99                 if (!tmpdir) {
 100                         length = f - fname;
 101                         /* copy up to and including the slash */
 102                         strlcpy(fnametmp, fname, length + 1);
 103                 }
 104         } else
 105                 f = fname;
 106         fnametmp[length++] = '.';
 107
 108         /* The maxname value is bufsize, and includes space for the '\0'.
 109          * NAME_MAX needs an extra -1 for the name's leading dot. */
 110         maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN,
 111                       NAME_MAX - 1 - TMPNAME_SUFFIX_LEN);
 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         suf = fnametmp + length + added;
 123
 124         /* Trim any dangling high-bit chars if the first-trimmed char (if any) is
 125          * also a high-bit char, just in case we cut into a multi-byte sequence.
 126          * We are guaranteed to stop because of the leading '.' we added. */
 127         if ((int)f[added] & 0x80) {
 128                 while ((int)suf[-1] & 0x80)
 129                         suf--;
 130         }
 131
 132         memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1);
 133
 134         return 1;
 135 }
 136
 137 /* Opens a temporary file for writing.
 138  * Success: Writes name into fnametmp, returns fd.
 139  * Failure: Clobbers fnametmp, returns -1.
 140  * Calling cleanup_set() is the caller's job. */
 141 int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
 142 {
 143         int fd;
 144         mode_t added_perms;
 145
 146         if (!get_tmpname(fnametmp, fname))
 147                 return -1;
 148
 149         if (am_root < 0) {
 150                 /* For --fake-super, the file must be useable by the copying
 151                  * user, just like it would be for root. */
 152                 added_perms = S_IRUSR|S_IWUSR;
 153         } else {
 154                 /* For a normal copy, we need to be able to tweak things like xattrs. */
 155                 added_perms = S_IWUSR;
 156         }
 157
 158         /* We initially set the perms without the setuid/setgid bits or group
 159          * access to ensure that there is no race condition.  They will be
 160          * correctly updated after the right owner and group info is set.
 161          * (Thanks to snabb@epipe.fi for pointing this out.) */
 162         fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
 163
 164 #if 0
 165         /* In most cases parent directories will already exist because their
 166          * information should have been previously transferred, but that may
 167          * not be the case with -R */
 168         if (fd == -1 && relative_paths && errno == ENOENT
 169             && create_directory_path(fnametmp) == 0) {
 170                 /* Get back to name with XXXXXX in it. */
 171                 get_tmpname(fnametmp, fname);
 172                 fd = do_mkstemp(fnametmp, (file->mode|added_perms) & INITACCESSPERMS);
 173         }
 174 #endif
 175
 176         if (fd == -1) {
 177                 rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
 178                         full_fname(fnametmp));
 179                 return -1;
 180         }
 181
 182         return fd;
 183 }
 184
 185 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 186                         const char *fname, int fd, OFF_T total_size)
 187 {
 188         static char file_sum1[MAX_DIGEST_LEN];
 189         static char file_sum2[MAX_DIGEST_LEN];
 190         struct map_struct *mapbuf;
 191         struct sum_struct sum;
 192         int32 len, sum_len;
 193         OFF_T offset = 0;
 194         OFF_T offset2;
 195         char *data;
 196         int32 i;
 197         char *map = NULL;
 198
 199         read_sum_head(f_in, &sum);
 200
 201         if (fd_r >= 0 && size_r > 0) {
 202                 int32 read_size = MAX(sum.blength * 2, 16*1024);
 203                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
 204                 if (verbose > 2) {
 205                         rprintf(FINFO, "recv mapped %s of size %.0f\n",
 206                                 fname_r, (double)size_r);
 207                 }
 208         } else
 209                 mapbuf = NULL;
 210
 211         sum_init(checksum_seed);
 212
 213         if (append_mode > 0) {
 214                 OFF_T j;
 215                 sum.flength = (OFF_T)sum.count * sum.blength;
 216                 if (sum.remainder)
 217                         sum.flength -= sum.blength - sum.remainder;
 218                 if (append_mode == 2) {
 219                         for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
 220                                 if (do_progress)
 221                                         show_progress(offset, total_size);
 222                                 sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
 223                                            CHUNK_SIZE);
 224                                 offset = j;
 225                         }
 226                         if (offset < sum.flength) {
 227                                 int32 len = (int32)(sum.flength - offset);
 228                                 if (do_progress)
 229                                         show_progress(offset, total_size);
 230                                 sum_update(map_ptr(mapbuf, offset, len), len);
 231                         }
 232                 }
 233                 offset = sum.flength;
 234                 if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
 235                         rsyserr(FERROR_XFER, errno, "lseek of %s returned %.0f, not %.0f",
 236                                 full_fname(fname), (double)j, (double)offset);
 237                         exit_cleanup(RERR_FILEIO);
 238                 }
 239         }
 240
 241         while ((i = recv_token(f_in, &data)) != 0) {
 242                 if (do_progress)
 243                         show_progress(offset, total_size);
 244
 245                 if (i > 0) {
 246                         if (verbose > 3) {
 247                                 rprintf(FINFO,"data recv %d at %.0f\n",
 248                                         i,(double)offset);
 249                         }
 250
 251                         stats.literal_data += i;
 252                         cleanup_got_literal = 1;
 253
 254                         sum_update(data, i);
 255
 256                         if (fd != -1 && write_file(fd,data,i) != i)
 257                                 goto report_write_error;
 258                         offset += i;
 259                         continue;
 260                 }
 261
 262                 i = -(i+1);
 263                 offset2 = i * (OFF_T)sum.blength;
 264                 len = sum.blength;
 265                 if (i == (int)sum.count-1 && sum.remainder != 0)
 266                         len = sum.remainder;
 267
 268                 stats.matched_data += len;
 269
 270                 if (verbose > 3) {
 271                         rprintf(FINFO,
 272                                 "chunk[%d] of size %ld at %.0f offset=%.0f%s\n",
 273                                 i, (long)len, (double)offset2, (double)offset,
 274                                 updating_basis_or_equiv && offset == offset2 ? " (seek)" : "");
 275                 }
 276
 277                 if (mapbuf) {
 278                         map = map_ptr(mapbuf,offset2,len);
 279
 280                         see_token(map, len);
 281                         sum_update(map, len);
 282                 }
 283
 284                 if (updating_basis_or_equiv) {
 285                         if (offset == offset2 && fd != -1) {
 286                                 OFF_T pos;
 287                                 if (flush_write_file(fd) < 0)
 288                                         goto report_write_error;
 289                                 offset += len;
 290                                 if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
 291                                         rsyserr(FERROR_XFER, errno,
 292                                                 "lseek of %s returned %.0f, not %.0f",
 293                                                 full_fname(fname),
 294                                                 (double)pos, (double)offset);
 295                                         exit_cleanup(RERR_FILEIO);
 296                                 }
 297                                 continue;
 298                         }
 299                 }
 300                 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
 301                         goto report_write_error;
 302                 offset += len;
 303         }
 304
 305         if (flush_write_file(fd) < 0)
 306                 goto report_write_error;
 307
 308 #ifdef HAVE_FTRUNCATE
 309         if (inplace && fd != -1
 310          && ftruncate(fd, offset) < 0) {
 311                 rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
 312                         full_fname(fname));
 313         }
 314 #endif
 315
 316         if (do_progress)
 317                 end_progress(total_size);
 318
 319         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 320             report_write_error:
 321                 rsyserr(FERROR_XFER, errno, "write failed on %s",
 322                         full_fname(fname));
 323                 exit_cleanup(RERR_FILEIO);
 324         }
 325
 326         sum_len = sum_end(file_sum1);
 327
 328         if (mapbuf)
 329                 unmap_file(mapbuf);
 330
 331         read_buf(f_in, file_sum2, sum_len);
 332         if (verbose > 2)
 333                 rprintf(FINFO,"got file_sum\n");
 334         if (fd != -1 && memcmp(file_sum1, file_sum2, sum_len) != 0)
 335                 return 0;
 336         return 1;
 337 }
 338
 339
 340 static void discard_receive_data(int f_in, OFF_T length)
 341 {
 342         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 343 }
 344
 345 static void handle_delayed_updates(char *local_name)
 346 {
 347         char *fname, *partialptr;
 348         int ndx;
 349
 350         for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
 351                 struct file_struct *file = cur_flist->files[ndx];
 352                 fname = local_name ? local_name : f_name(file, NULL);
 353                 if ((partialptr = partial_dir_fname(fname)) != NULL) {
 354                         if (make_backups > 0 && !make_backup(fname))
 355                                 continue;
 356                         if (verbose > 2) {
 357                                 rprintf(FINFO, "renaming %s to %s\n",
 358                                         partialptr, fname);
 359                         }
 360                         /* We don't use robust_rename() here because the
 361                          * partial-dir must be on the same drive. */
 362                         if (do_rename(partialptr, fname) < 0) {
 363                                 rsyserr(FERROR_XFER, errno,
 364                                         "rename failed for %s (from %s)",
 365                                         full_fname(fname), partialptr);
 366                         } else {
 367                                 if (remove_source_files
 368                                  || (preserve_hard_links && F_IS_HLINKED(file)))
 369                                         send_msg_int(MSG_SUCCESS, ndx);
 370                                 handle_partial_dir(partialptr, PDIR_DELETE);
 371                         }
 372                 }
 373         }
 374 }
 375
 376 static void no_batched_update(int ndx, BOOL is_redo)
 377 {
 378         struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
 379         struct file_struct *file = flist->files[ndx - flist->ndx_start];
 380
 381         rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
 382                 is_redo ? " resend of" : "", f_name(file, NULL));
 383
 384         if (inc_recurse && !dry_run)
 385                 send_msg_int(MSG_NO_SEND, ndx);
 386 }
 387
 388 static int we_want_redo(int desired_ndx)
 389 {
 390         static int redo_ndx = -1;
 391
 392         while (redo_ndx < desired_ndx) {
 393                 if (redo_ndx >= 0)
 394                         no_batched_update(redo_ndx, True);
 395                 if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
 396                         return 0;
 397         }
 398
 399         if (redo_ndx == desired_ndx) {
 400                 redo_ndx = -1;
 401                 return 1;
 402         }
 403
 404         return 0;
 405 }
 406
 407 static int gen_wants_ndx(int desired_ndx)
 408 {
 409         static int next_ndx = -1;
 410         static int done_cnt = 0;
 411         static BOOL got_eof = False;
 412         int flist_num = first_flist->flist_num;
 413
 414         if (got_eof)
 415                 return 0;
 416
 417         while (next_ndx < desired_ndx) {
 418                 if (inc_recurse && flist_num <= done_cnt)
 419                         return 0;
 420                 if (next_ndx >= 0)
 421                         no_batched_update(next_ndx, False);
 422                 if ((next_ndx = read_int(batch_gen_fd)) < 0) {
 423                         if (inc_recurse) {
 424                                 done_cnt++;
 425                                 continue;
 426                         }
 427                         got_eof = True;
 428                         return 0;
 429                 }
 430         }
 431
 432         if (next_ndx == desired_ndx) {
 433                 next_ndx = -1;
 434                 return 1;
 435         }
 436
 437         return 0;
 438 }
 439
 440 /**
 441  * main routine for receiver process.
 442  *
 443  * Receiver process runs on the same host as the generator process. */
 444 int recv_files(int f_in, char *local_name)
 445 {
 446         int fd1,fd2;
 447         STRUCT_STAT st;
 448         int iflags, xlen;
 449         char *fname, fbuf[MAXPATHLEN];
 450         char xname[MAXPATHLEN];
 451         char fnametmp[MAXPATHLEN];
 452         char *fnamecmp, *partialptr;
 453         char fnamecmpbuf[MAXPATHLEN];
 454         uchar fnamecmp_type;
 455         struct file_struct *file;
 456         struct stats initial_stats;
 457         int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
 458         enum logcode log_code = log_before_transfer ? FLOG : FINFO;
 459         int max_phase = protocol_version >= 29 ? 2 : 1;
 460         int dflt_perms = (ACCESSPERMS & ~orig_umask);
 461 #ifdef SUPPORT_ACLS
 462         const char *parent_dirname = "";
 463 #endif
 464         int ndx, recv_ok;
 465
 466         if (verbose > 2)
 467                 rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
 468
 469         if (delay_updates)
 470                 delayed_bits = bitbag_create(cur_flist->used + 1);
 471
 472         while (1) {
 473                 cleanup_disable();
 474
 475                 /* This call also sets cur_flist. */
 476                 ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
 477                                          xname, &xlen);
 478                 if (ndx == NDX_DONE) {
 479                         if (inc_recurse && first_flist) {
 480                                 if (read_batch)
 481                                         gen_wants_ndx(first_flist->used + first_flist->ndx_start);
 482                                 flist_free(first_flist);
 483                                 if (first_flist)
 484                                         continue;
 485                         } else if (read_batch && first_flist)
 486                                 gen_wants_ndx(first_flist->used);
 487                         if (++phase > max_phase)
 488                                 break;
 489                         if (verbose > 2)
 490                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 491                         if (phase == 2 && delay_updates)
 492                                 handle_delayed_updates(local_name);
 493                         send_msg(MSG_DONE, "", 0, 0);
 494                         continue;
 495                 }
 496
 497                 if (ndx - cur_flist->ndx_start >= 0)
 498                         file = cur_flist->files[ndx - cur_flist->ndx_start];
 499                 else
 500                         file = dir_flist->files[cur_flist->parent_ndx];
 501                 fname = local_name ? local_name : f_name(file, fbuf);
 502
 503                 if (verbose > 2)
 504                         rprintf(FINFO, "recv_files(%s)\n", fname);
 505
 506 #ifdef SUPPORT_XATTRS
 507                 if (iflags & ITEM_REPORT_XATTR && do_xfers)
 508                         recv_xattr_request(file, f_in);
 509 #endif
 510
 511                 if (!(iflags & ITEM_TRANSFER)) {
 512                         maybe_log_item(file, iflags, itemizing, xname);
 513 #ifdef SUPPORT_XATTRS
 514                         if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers)
 515                                 set_file_attrs(fname, file, NULL, fname, 0);
 516 #endif
 517                         continue;
 518                 }
 519                 if (phase == 2) {
 520                         rprintf(FERROR,
 521                                 "got transfer request in phase 2 [%s]\n",
 522                                 who_am_i());
 523                         exit_cleanup(RERR_PROTOCOL);
 524                 }
 525
 526                 if (file->flags & FLAG_FILE_SENT) {
 527                         if (csum_length == SHORT_SUM_LENGTH) {
 528                                 if (keep_partial && !partial_dir)
 529                                         make_backups = -make_backups; /* prevents double backup */
 530                                 if (append_mode)
 531                                         sparse_files = -sparse_files;
 532                                 append_mode = -append_mode;
 533                                 csum_length = SUM_LENGTH;
 534                                 redoing = 1;
 535                         }
 536                 } else {
 537                         if (csum_length != SHORT_SUM_LENGTH) {
 538                                 if (keep_partial && !partial_dir)
 539                                         make_backups = -make_backups;
 540                                 if (append_mode)
 541                                         sparse_files = -sparse_files;
 542                                 append_mode = -append_mode;
 543                                 csum_length = SHORT_SUM_LENGTH;
 544                                 redoing = 0;
 545                         }
 546                 }
 547
 548                 if (!am_server && do_progress)
 549                         set_current_file_index(file, ndx);
 550                 stats.num_transferred_files++;
 551                 stats.total_transferred_size += F_LENGTH(file);
 552
 553                 cleanup_got_literal = 0;
 554
 555                 if (daemon_filter_list.head
 556                     && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
 557                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 558                         exit_cleanup(RERR_PROTOCOL);
 559                 }
 560
 561                 if (read_batch) {
 562                         int wanted = redoing
 563                                    ? we_want_redo(ndx)
 564                                    : gen_wants_ndx(ndx);
 565                         if (!wanted) {
 566                                 rprintf(FINFO,
 567                                         "(Skipping batched update for%s \"%s\")\n",
 568                                         redoing ? " resend of" : "",
 569                                         fname);
 570                                 discard_receive_data(f_in, F_LENGTH(file));
 571                                 file->flags |= FLAG_FILE_SENT;
 572                                 continue;
 573                         }
 574                 }
 575
 576                 if (!do_xfers) { /* log the transfer */
 577                         log_item(FCLIENT, file, &stats, iflags, NULL);
 578                         if (read_batch)
 579                                 discard_receive_data(f_in, F_LENGTH(file));
 580                         continue;
 581                 }
 582                 if (write_batch < 0) {
 583                         log_item(FCLIENT, file, &stats, iflags, NULL);
 584                         if (!am_server)
 585                                 discard_receive_data(f_in, F_LENGTH(file));
 586                         continue;
 587                 }
 588
 589                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 590
 591                 if (protocol_version >= 29) {
 592                         switch (fnamecmp_type) {
 593                         case FNAMECMP_FNAME:
 594                                 fnamecmp = fname;
 595                                 break;
 596                         case FNAMECMP_PARTIAL_DIR:
 597                                 fnamecmp = partialptr;
 598                                 break;
 599                         case FNAMECMP_BACKUP:
 600                                 fnamecmp = get_backup_name(fname);
 601                                 break;
 602                         case FNAMECMP_FUZZY:
 603                                 if (file->dirname) {
 604                                         pathjoin(fnamecmpbuf, MAXPATHLEN,
 605                                                  file->dirname, xname);
 606                                         fnamecmp = fnamecmpbuf;
 607                                 } else
 608                                         fnamecmp = xname;
 609                                 break;
 610                         default:
 611                                 if (fnamecmp_type >= basis_dir_cnt) {
 612                                         rprintf(FERROR,
 613                                                 "invalid basis_dir index: %d.\n",
 614                                                 fnamecmp_type);
 615                                         exit_cleanup(RERR_PROTOCOL);
 616                                 }
 617                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 618                                          basis_dir[fnamecmp_type], fname);
 619                                 fnamecmp = fnamecmpbuf;
 620                                 break;
 621                         }
 622                         if (!fnamecmp || (daemon_filter_list.head
 623                           && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
 624                                 fnamecmp = fname;
 625                                 fnamecmp_type = FNAMECMP_FNAME;
 626                         }
 627                 } else {
 628                         /* Reminder: --inplace && --partial-dir are never
 629                          * enabled at the same time. */
 630                         if (inplace && make_backups > 0) {
 631                                 if (!(fnamecmp = get_backup_name(fname)))
 632                                         fnamecmp = fname;
 633                                 else
 634                                         fnamecmp_type = FNAMECMP_BACKUP;
 635                         } else if (partial_dir && partialptr)
 636                                 fnamecmp = partialptr;
 637                         else
 638                                 fnamecmp = fname;
 639                 }
 640
 641                 initial_stats = stats;
 642
 643                 /* open the file */
 644                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 645
 646                 if (fd1 == -1 && protocol_version < 29) {
 647                         if (fnamecmp != fname) {
 648                                 fnamecmp = fname;
 649                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 650                         }
 651
 652                         if (fd1 == -1 && basis_dir[0]) {
 653                                 /* pre-29 allowed only one alternate basis */
 654                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 655                                          basis_dir[0], fname);
 656                                 fnamecmp = fnamecmpbuf;
 657                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 658                         }
 659                 }
 660
 661                 updating_basis_or_equiv = inplace
 662                     && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
 663
 664                 if (fd1 == -1) {
 665                         st.st_mode = 0;
 666                         st.st_size = 0;
 667                 } else if (do_fstat(fd1,&st) != 0) {
 668                         rsyserr(FERROR_XFER, errno, "fstat %s failed",
 669                                 full_fname(fnamecmp));
 670                         discard_receive_data(f_in, F_LENGTH(file));
 671                         close(fd1);
 672                         if (inc_recurse)
 673                                 send_msg_int(MSG_NO_SEND, ndx);
 674                         continue;
 675                 }
 676
 677                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 678                         /* this special handling for directories
 679                          * wouldn't be necessary if robust_rename()
 680                          * and the underlying robust_unlink could cope
 681                          * with directories
 682                          */
 683                         rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
 684                                 full_fname(fnamecmp));
 685                         discard_receive_data(f_in, F_LENGTH(file));
 686                         close(fd1);
 687                         if (inc_recurse)
 688                                 send_msg_int(MSG_NO_SEND, ndx);
 689                         continue;
 690                 }
 691
 692                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 693                         close(fd1);
 694                         fd1 = -1;
 695                 }
 696
 697                 /* If we're not preserving permissions, change the file-list's
 698                  * mode based on the local permissions and some heuristics. */
 699                 if (!preserve_perms) {
 700                         int exists = fd1 != -1;
 701 #ifdef SUPPORT_ACLS
 702                         const char *dn = file->dirname ? file->dirname : ".";
 703                         if (parent_dirname != dn
 704                          && strcmp(parent_dirname, dn) != 0) {
 705                                 dflt_perms = default_perms_for_dir(dn);
 706                                 parent_dirname = dn;
 707                         }
 708 #endif
 709                         file->mode = dest_mode(file->mode, st.st_mode,
 710                                                dflt_perms, exists);
 711                 }
 712
 713                 /* We now check to see if we are writing the file "inplace" */
 714                 if (inplace)  {
 715                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
 716                         if (fd2 == -1) {
 717                                 rsyserr(FERROR_XFER, errno, "open %s failed",
 718                                         full_fname(fname));
 719                         }
 720                 } else {
 721                         fd2 = open_tmpfile(fnametmp, fname, file);
 722                         if (fd2 != -1)
 723                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 724                 }
 725
 726                 if (fd2 == -1) {
 727                         discard_receive_data(f_in, F_LENGTH(file));
 728                         if (fd1 != -1)
 729                                 close(fd1);
 730                         if (inc_recurse)
 731                                 send_msg_int(MSG_NO_SEND, ndx);
 732                         continue;
 733                 }
 734
 735                 /* log the transfer */
 736                 if (log_before_transfer)
 737                         log_item(FCLIENT, file, &initial_stats, iflags, NULL);
 738                 else if (!am_server && verbose && do_progress)
 739                         rprintf(FINFO, "%s\n", fname);
 740
 741                 /* recv file data */
 742                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 743                                        fname, fd2, F_LENGTH(file));
 744
 745                 log_item(log_code, file, &initial_stats, iflags, NULL);
 746
 747                 if (fd1 != -1)
 748                         close(fd1);
 749                 if (close(fd2) < 0) {
 750                         rsyserr(FERROR, errno, "close failed on %s",
 751                                 full_fname(fnametmp));
 752                         exit_cleanup(RERR_FILEIO);
 753                 }
 754
 755                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 756                         if (partialptr == fname)
 757                                 partialptr = NULL;
 758                         if (!finish_transfer(fname, fnametmp, fnamecmp,
 759                                              partialptr, file, recv_ok, 1))
 760                                 recv_ok = -1;
 761                         else if (fnamecmp == partialptr) {
 762                                 do_unlink(partialptr);
 763                                 handle_partial_dir(partialptr, PDIR_DELETE);
 764                         }
 765                 } else if (keep_partial && partialptr) {
 766                         if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
 767                                 rprintf(FERROR,
 768                                     "Unable to create partial-dir for %s -- discarding %s.\n",
 769                                     local_name ? local_name : f_name(file, NULL),
 770                                     recv_ok ? "completed file" : "partial file");
 771                                 do_unlink(fnametmp);
 772                                 recv_ok = -1;
 773                         } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
 774                                                     file, recv_ok, !partial_dir))
 775                                 recv_ok = -1;
 776                         else if (delay_updates && recv_ok) {
 777                                 bitbag_set_bit(delayed_bits, ndx);
 778                                 recv_ok = 2;
 779                         } else
 780                                 partialptr = NULL;
 781                 } else
 782                         do_unlink(fnametmp);
 783
 784                 cleanup_disable();
 785
 786                 if (read_batch)
 787                         file->flags |= FLAG_FILE_SENT;
 788
 789                 switch (recv_ok) {
 790                 case 2:
 791                         break;
 792                 case 1:
 793                         if (remove_source_files || inc_recurse
 794                          || (preserve_hard_links && F_IS_HLINKED(file)))
 795                                 send_msg_int(MSG_SUCCESS, ndx);
 796                         break;
 797                 case 0: {
 798                         enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
 799                         if (msgtype == FERROR_XFER || verbose) {
 800                                 char *errstr, *redostr, *keptstr;
 801                                 if (!(keep_partial && partialptr) && !inplace)
 802                                         keptstr = "discarded";
 803                                 else if (partial_dir)
 804                                         keptstr = "put into partial-dir";
 805                                 else
 806                                         keptstr = "retained";
 807                                 if (msgtype == FERROR_XFER) {
 808                                         errstr = "ERROR";
 809                                         redostr = "";
 810                                 } else {
 811                                         errstr = "WARNING";
 812                                         redostr = read_batch ? " (may try again)"
 813                                                              : " (will try again)";
 814                                 }
 815                                 rprintf(msgtype,
 816                                         "%s: %s failed verification -- update %s%s.\n",
 817                                         errstr, local_name ? f_name(file, NULL) : fname,
 818                                         keptstr, redostr);
 819                         }
 820                         if (!redoing) {
 821                                 if (read_batch)
 822                                         flist_ndx_push(&batch_redo_list, ndx);
 823                                 send_msg_int(MSG_REDO, ndx);
 824                                 file->flags |= FLAG_FILE_SENT;
 825                         } else if (inc_recurse)
 826                                 send_msg_int(MSG_NO_SEND, ndx);
 827                         break;
 828                     }
 829                 case -1:
 830                         if (inc_recurse)
 831                                 send_msg_int(MSG_NO_SEND, ndx);
 832                         break;
 833                 }
 834         }
 835         if (make_backups < 0)
 836                 make_backups = -make_backups;
 837
 838         if (phase == 2 && delay_updates) /* for protocol_version < 29 */
 839                 handle_delayed_updates(local_name);
 840
 841         if (verbose > 2)
 842                 rprintf(FINFO,"recv_files finished\n");
 843
 844         return 0;
 845 }