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) 2003-2008 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 dry_run;
  25 extern int do_xfers;
  26 extern int am_server;
  27 extern int inc_recurse;
  28 extern int log_before_transfer;
  29 extern int stdout_format_has_i;
  30 extern int logfile_format_has_i;
  31 extern int csum_length;
  32 extern int read_batch;
  33 extern int write_batch;
  34 extern int batch_gen_fd;
  35 extern int protocol_version;
  36 extern int relative_paths;
  37 extern int preserve_hard_links;
  38 extern int preserve_perms;
  39 extern int preserve_xattrs;
  40 extern int basis_dir_cnt;
  41 extern int make_backups;
  42 extern int cleanup_got_literal;
  43 extern int remove_source_files;
  44 extern int append_mode;
  45 extern int sparse_files;
  46 extern int keep_partial;
  47 extern int checksum_len;
  48 extern int checksum_seed;
  49 extern int inplace;
  50 extern int delay_updates;
  51 extern mode_t orig_umask;
  52 extern struct stats stats;
  53 extern char *tmpdir;
  54 extern char *partial_dir;
  55 extern char *basis_dir[MAX_BASIS_DIRS+1];
  56 extern char sender_file_sum[MAX_DIGEST_LEN];
  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 /* We're either updating the basis file or an identical copy: */
  63 static int updating_basis_or_equiv;
  64
  65 /*
  66  * get_tmpname() - create a tmp filename for a given filename
  67  *
  68  *   If a tmpdir is defined, use that as the directory to
  69  *   put it in.  Otherwise, the tmp filename is in the same
  70  *   directory as the given name.  Note that there may be no
  71  *   directory at all in the given name!
  72  *
  73  *   The tmp filename is basically the given filename with a
  74  *   dot prepended, and .XXXXXX appended (for mkstemp() to
  75  *   put its unique gunk in).  Take care to not exceed
  76  *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
  77  *   the basename basically becomes 8 chars longer. In that
  78  *   case, the original name is shortened sufficiently to
  79  *   make it all fit.
  80  *
  81  *   Of course, there's no real reason for the tmp name to
  82  *   look like the original, except to satisfy us humans.
  83  *   As long as it's unique, rsync will work.
  84  */
  85
  86 int get_tmpname(char *fnametmp, const char *fname)
  87 {
  88         int maxname, added, length = 0;
  89         const char *f;
  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          * (Note that NAME_MAX get -8 for the leading '.' above.) */
 110         maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
 111
 112         if (maxname < 1) {
 113                 rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
 114                 fnametmp[0] = '\0';
 115                 return 0;
 116         }
 117
 118         added = strlcpy(fnametmp + length, f, maxname);
 119         if (added >= maxname)
 120                 added = maxname - 1;
 121         memcpy(fnametmp + length + added, ".XXXXXX", 8);
 122
 123         return 1;
 124 }
 125
 126 /* Opens a temporary file for writing.
 127  * Success: Writes name into fnametmp, returns fd.
 128  * Failure: Clobbers fnametmp, returns -1.
 129  * Calling cleanup_set() is the caller's job. */
 130 int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
 131 {
 132         int fd;
 133
 134         if (!get_tmpname(fnametmp, fname))
 135                 return -1;
 136
 137         /* We initially set the perms without the setuid/setgid bits or group
 138          * access to ensure that there is no race condition.  They will be
 139          * correctly updated after the right owner and group info is set.
 140          * (Thanks to snabb@epipe.fi for pointing this out.) */
 141         fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 142
 143 #if 0
 144         /* In most cases parent directories will already exist because their
 145          * information should have been previously transferred, but that may
 146          * not be the case with -R */
 147         if (fd == -1 && relative_paths && errno == ENOENT
 148             && create_directory_path(fnametmp) == 0) {
 149                 /* Get back to name with XXXXXX in it. */
 150                 get_tmpname(fnametmp, fname);
 151                 fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 152         }
 153 #endif
 154
 155         if (fd == -1) {
 156                 rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
 157                         full_fname(fnametmp));
 158                 return -1;
 159         }
 160
 161         return fd;
 162 }
 163
 164 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 165                         const char *fname, int fd, OFF_T total_size)
 166 {
 167         static char file_sum1[MAX_DIGEST_LEN];
 168         struct map_struct *mapbuf;
 169         struct sum_struct sum;
 170         int32 len;
 171         OFF_T offset = 0;
 172         OFF_T offset2;
 173         char *data;
 174         int32 i;
 175         char *map = NULL;
 176
 177         read_sum_head(f_in, &sum);
 178
 179         if (fd_r >= 0 && size_r > 0) {
 180                 int32 read_size = MAX(sum.blength * 2, 16*1024);
 181                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
 182                 if (DEBUG_GTE(DELTASUM, 2)) {
 183                         rprintf(FINFO, "recv mapped %s of size %s\n",
 184                                 fname_r, big_num(size_r, 0));
 185                 }
 186         } else
 187                 mapbuf = NULL;
 188
 189         sum_init(checksum_seed);
 190
 191         if (append_mode > 0) {
 192                 OFF_T j;
 193                 sum.flength = (OFF_T)sum.count * sum.blength;
 194                 if (sum.remainder)
 195                         sum.flength -= sum.blength - sum.remainder;
 196                 if (append_mode == 2) {
 197                         for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
 198                                 if (INFO_GTE(PROGRESS, 1))
 199                                         show_progress(offset, total_size);
 200                                 sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
 201                                            CHUNK_SIZE);
 202                                 offset = j;
 203                         }
 204                         if (offset < sum.flength) {
 205                                 int32 len = (int32)(sum.flength - offset);
 206                                 if (INFO_GTE(PROGRESS, 1))
 207                                         show_progress(offset, total_size);
 208                                 sum_update(map_ptr(mapbuf, offset, len), len);
 209                         }
 210                 }
 211                 offset = sum.flength;
 212                 if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
 213                         rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s",
 214                                 full_fname(fname), big_num(j, 0), big_num(offset, 0));
 215                         exit_cleanup(RERR_FILEIO);
 216                 }
 217         }
 218
 219         while ((i = recv_token(f_in, &data)) != 0) {
 220                 if (INFO_GTE(PROGRESS, 1))
 221                         show_progress(offset, total_size);
 222
 223                 if (i > 0) {
 224                         if (DEBUG_GTE(DELTASUM, 3)) {
 225                                 rprintf(FINFO,"data recv %d at %s\n",
 226                                         i, big_num(offset, 0));
 227                         }
 228
 229                         stats.literal_data += i;
 230                         cleanup_got_literal = 1;
 231
 232                         sum_update(data, i);
 233
 234                         if (fd != -1 && write_file(fd,data,i) != i)
 235                                 goto report_write_error;
 236                         offset += i;
 237                         continue;
 238                 }
 239
 240                 i = -(i+1);
 241                 offset2 = i * (OFF_T)sum.blength;
 242                 len = sum.blength;
 243                 if (i == (int)sum.count-1 && sum.remainder != 0)
 244                         len = sum.remainder;
 245
 246                 stats.matched_data += len;
 247
 248                 if (DEBUG_GTE(DELTASUM, 3)) {
 249                         rprintf(FINFO,
 250                                 "chunk[%d] of size %ld at %s offset=%s\n",
 251                                 i, (long)len, big_num(offset2, 0), big_num(offset, 0));
 252                 }
 253
 254                 if (mapbuf) {
 255                         map = map_ptr(mapbuf,offset2,len);
 256
 257                         see_token(map, len);
 258                         sum_update(map, len);
 259                 }
 260
 261                 if (updating_basis_or_equiv) {
 262                         if (offset == offset2 && fd != -1) {
 263                                 OFF_T pos;
 264                                 if (flush_write_file(fd) < 0)
 265                                         goto report_write_error;
 266                                 offset += len;
 267                                 if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
 268                                         rsyserr(FERROR_XFER, errno,
 269                                                 "lseek of %s returned %s, not %s",
 270                                                 full_fname(fname),
 271                                                 big_num(pos, 0), big_num(offset, 0));
 272                                         exit_cleanup(RERR_FILEIO);
 273                                 }
 274                                 continue;
 275                         }
 276                 }
 277                 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
 278                         goto report_write_error;
 279                 offset += len;
 280         }
 281
 282         if (flush_write_file(fd) < 0)
 283                 goto report_write_error;
 284
 285 #ifdef HAVE_FTRUNCATE
 286         if (inplace && fd != -1)
 287                 ftruncate(fd, offset);
 288 #endif
 289
 290         if (INFO_GTE(PROGRESS, 1))
 291                 end_progress(total_size);
 292
 293         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 294             report_write_error:
 295                 rsyserr(FERROR_XFER, errno, "write failed on %s",
 296                         full_fname(fname));
 297                 exit_cleanup(RERR_FILEIO);
 298         }
 299
 300         if (sum_end(file_sum1) != checksum_len)
 301                 overflow_exit("checksum_len"); /* Impossible... */
 302
 303         if (mapbuf)
 304                 unmap_file(mapbuf);
 305
 306         read_buf(f_in, sender_file_sum, checksum_len);
 307         if (DEBUG_GTE(DELTASUM, 2))
 308                 rprintf(FINFO,"got file_sum\n");
 309         if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0)
 310                 return 0;
 311         return 1;
 312 }
 313
 314
 315 static void discard_receive_data(int f_in, OFF_T length)
 316 {
 317         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 318 }
 319
 320 static void handle_delayed_updates(char *local_name)
 321 {
 322         char *fname, *partialptr;
 323         int ndx;
 324
 325         for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
 326                 struct file_struct *file = cur_flist->files[ndx];
 327                 fname = local_name ? local_name : f_name(file, NULL);
 328                 if ((partialptr = partial_dir_fname(fname)) != NULL) {
 329                         if (make_backups > 0 && !make_backup(fname))
 330                                 continue;
 331                         if (DEBUG_GTE(RECV, 1)) {
 332                                 rprintf(FINFO, "renaming %s to %s\n",
 333                                         partialptr, fname);
 334                         }
 335                         /* We don't use robust_rename() here because the
 336                          * partial-dir must be on the same drive. */
 337                         if (do_rename(partialptr, fname) < 0) {
 338                                 rsyserr(FERROR_XFER, errno,
 339                                         "rename failed for %s (from %s)",
 340                                         full_fname(fname), partialptr);
 341                         } else {
 342                                 if (remove_source_files
 343                                  || (preserve_hard_links && F_IS_HLINKED(file)))
 344                                         send_msg_int(MSG_SUCCESS, ndx);
 345                                 handle_partial_dir(partialptr, PDIR_DELETE);
 346                         }
 347                 }
 348         }
 349 }
 350
 351 static int get_next_gen_ndx(int fd, int next_gen_ndx, int desired_ndx)
 352 {
 353         while (next_gen_ndx < desired_ndx) {
 354                 if (next_gen_ndx >= 0) {
 355                         struct file_struct *file = cur_flist->files[next_gen_ndx];
 356                         rprintf(FERROR_XFER,
 357                                 "(No batched update for%s \"%s\")\n",
 358                                 file->flags & FLAG_FILE_SENT ? " resend of" : "",
 359                                 f_name(file, NULL));
 360                 }
 361                 next_gen_ndx = read_int(fd);
 362                 if (next_gen_ndx == -1) {
 363                         if (inc_recurse)
 364                                 next_gen_ndx = first_flist->prev->used + first_flist->prev->ndx_start;
 365                         else
 366                                 next_gen_ndx = cur_flist->used;
 367                 }
 368         }
 369         return next_gen_ndx;
 370 }
 371
 372 /**
 373  * main routine for receiver process.
 374  *
 375  * Receiver process runs on the same host as the generator process. */
 376 int recv_files(int f_in, char *local_name)
 377 {
 378         int next_gen_ndx = -1;
 379         int fd1,fd2;
 380         STRUCT_STAT st;
 381         int iflags, xlen;
 382         char *fname, fbuf[MAXPATHLEN];
 383         char xname[MAXPATHLEN];
 384         char fnametmp[MAXPATHLEN];
 385         char *fnamecmp, *partialptr;
 386         char fnamecmpbuf[MAXPATHLEN];
 387         uchar fnamecmp_type;
 388         struct file_struct *file;
 389         struct stats initial_stats;
 390         int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
 391         enum logcode log_code = log_before_transfer ? FLOG : FINFO;
 392         int max_phase = protocol_version >= 29 ? 2 : 1;
 393         int dflt_perms = (ACCESSPERMS & ~orig_umask);
 394 #ifdef SUPPORT_ACLS
 395         const char *parent_dirname = "";
 396 #endif
 397         int ndx, recv_ok;
 398
 399         if (DEBUG_GTE(RECV, 1))
 400                 rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
 401
 402         if (delay_updates)
 403                 delayed_bits = bitbag_create(cur_flist->used + 1);
 404
 405         while (1) {
 406                 cleanup_disable();
 407
 408                 /* This call also sets cur_flist. */
 409                 ndx = read_ndx_and_attrs(f_in, &iflags, &fnamecmp_type,
 410                                          xname, &xlen);
 411                 if (ndx == NDX_DONE) {
 412                         if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
 413                                 set_current_file_index(NULL, 0);
 414                                 end_progress(0);
 415                         }
 416                         if (inc_recurse && first_flist) {
 417                                 flist_free(first_flist);
 418                                 if (first_flist)
 419                                         continue;
 420                         }
 421                         if (read_batch && cur_flist) {
 422                                 int high = inc_recurse
 423                                     ? first_flist->prev->used + first_flist->prev->ndx_start
 424                                     : cur_flist->used;
 425                                 get_next_gen_ndx(batch_gen_fd, next_gen_ndx, high);
 426                                 next_gen_ndx = -1;
 427                         }
 428                         if (++phase > max_phase)
 429                                 break;
 430                         if (DEBUG_GTE(RECV, 1))
 431                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 432                         if (phase == 2 && delay_updates)
 433                                 handle_delayed_updates(local_name);
 434                         send_msg(MSG_DONE, "", 0, 0);
 435                         continue;
 436                 }
 437
 438                 if (ndx - cur_flist->ndx_start >= 0)
 439                         file = cur_flist->files[ndx - cur_flist->ndx_start];
 440                 else
 441                         file = dir_flist->files[cur_flist->parent_ndx];
 442                 fname = local_name ? local_name : f_name(file, fbuf);
 443
 444                 if (DEBUG_GTE(RECV, 1))
 445                         rprintf(FINFO, "recv_files(%s)\n", fname);
 446
 447 #ifdef SUPPORT_XATTRS
 448                 if (iflags & ITEM_REPORT_XATTR && !dry_run)
 449                         recv_xattr_request(file, f_in);
 450 #endif
 451
 452                 if (!(iflags & ITEM_TRANSFER)) {
 453                         maybe_log_item(file, iflags, itemizing, xname);
 454 #ifdef SUPPORT_XATTRS
 455                         if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && !dry_run)
 456                                 set_file_attrs(fname, file, NULL, fname, 0);
 457 #endif
 458                         continue;
 459                 }
 460                 if (phase == 2) {
 461                         rprintf(FERROR,
 462                                 "got transfer request in phase 2 [%s]\n",
 463                                 who_am_i());
 464                         exit_cleanup(RERR_PROTOCOL);
 465                 }
 466
 467                 if (file->flags & FLAG_FILE_SENT) {
 468                         if (csum_length == SHORT_SUM_LENGTH) {
 469                                 if (keep_partial && !partial_dir)
 470                                         make_backups = -make_backups; /* prevents double backup */
 471                                 if (append_mode)
 472                                         sparse_files = -sparse_files;
 473                                 append_mode = -append_mode;
 474                                 csum_length = SUM_LENGTH;
 475                                 redoing = 1;
 476                         }
 477                 } else {
 478                         if (csum_length != SHORT_SUM_LENGTH) {
 479                                 if (keep_partial && !partial_dir)
 480                                         make_backups = -make_backups;
 481                                 if (append_mode)
 482                                         sparse_files = -sparse_files;
 483                                 append_mode = -append_mode;
 484                                 csum_length = SHORT_SUM_LENGTH;
 485                                 redoing = 0;
 486                         }
 487                 }
 488
 489                 if (!am_server && INFO_GTE(PROGRESS, 1))
 490                         set_current_file_index(file, ndx);
 491                 stats.num_transferred_files++;
 492                 stats.total_transferred_size += F_LENGTH(file);
 493
 494                 cleanup_got_literal = 0;
 495
 496                 if (daemon_filter_list.head
 497                     && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
 498                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 499                         exit_cleanup(RERR_PROTOCOL);
 500                 }
 501
 502                 if (!do_xfers) { /* log the transfer */
 503                         log_item(FCLIENT, file, &stats, iflags, NULL);
 504                         if (read_batch)
 505                                 discard_receive_data(f_in, F_LENGTH(file));
 506                         continue;
 507                 }
 508                 if (write_batch < 0) {
 509                         log_item(FCLIENT, file, &stats, iflags, NULL);
 510                         if (!am_server)
 511                                 discard_receive_data(f_in, F_LENGTH(file));
 512                         continue;
 513                 }
 514
 515                 if (read_batch) {
 516                         next_gen_ndx = get_next_gen_ndx(batch_gen_fd, next_gen_ndx, ndx);
 517                         if (ndx < next_gen_ndx) {
 518                                 rprintf(FINFO,
 519                                         "(Skipping batched update for \"%s\")\n",
 520                                         fname);
 521                                 discard_receive_data(f_in, F_LENGTH(file));
 522                                 if (inc_recurse)
 523                                         send_msg_int(MSG_NO_SEND, ndx);
 524                                 continue;
 525                         }
 526                         next_gen_ndx = -1;
 527                 }
 528
 529                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 530
 531                 if (protocol_version >= 29) {
 532                         switch (fnamecmp_type) {
 533                         case FNAMECMP_FNAME:
 534                                 fnamecmp = fname;
 535                                 break;
 536                         case FNAMECMP_PARTIAL_DIR:
 537                                 fnamecmp = partialptr;
 538                                 break;
 539                         case FNAMECMP_BACKUP:
 540                                 fnamecmp = get_backup_name(fname);
 541                                 break;
 542                         case FNAMECMP_FUZZY:
 543                                 if (file->dirname) {
 544                                         pathjoin(fnamecmpbuf, MAXPATHLEN,
 545                                                  file->dirname, xname);
 546                                         fnamecmp = fnamecmpbuf;
 547                                 } else
 548                                         fnamecmp = xname;
 549                                 break;
 550                         default:
 551                                 if (fnamecmp_type >= basis_dir_cnt) {
 552                                         rprintf(FERROR,
 553                                                 "invalid basis_dir index: %d.\n",
 554                                                 fnamecmp_type);
 555                                         exit_cleanup(RERR_PROTOCOL);
 556                                 }
 557                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 558                                          basis_dir[fnamecmp_type], fname);
 559                                 fnamecmp = fnamecmpbuf;
 560                                 break;
 561                         }
 562                         if (!fnamecmp || (daemon_filter_list.head
 563                           && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
 564                                 fnamecmp = fname;
 565                                 fnamecmp_type = FNAMECMP_FNAME;
 566                         }
 567                 } else {
 568                         /* Reminder: --inplace && --partial-dir are never
 569                          * enabled at the same time. */
 570                         if (inplace && make_backups > 0) {
 571                                 if (!(fnamecmp = get_backup_name(fname)))
 572                                         fnamecmp = fname;
 573                                 else
 574                                         fnamecmp_type = FNAMECMP_BACKUP;
 575                         } else if (partial_dir && partialptr)
 576                                 fnamecmp = partialptr;
 577                         else
 578                                 fnamecmp = fname;
 579                 }
 580
 581                 initial_stats = stats;
 582
 583                 /* open the file */
 584                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 585
 586                 if (fd1 == -1 && protocol_version < 29) {
 587                         if (fnamecmp != fname) {
 588                                 fnamecmp = fname;
 589                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 590                         }
 591
 592                         if (fd1 == -1 && basis_dir[0]) {
 593                                 /* pre-29 allowed only one alternate basis */
 594                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 595                                          basis_dir[0], fname);
 596                                 fnamecmp = fnamecmpbuf;
 597                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 598                         }
 599                 }
 600
 601                 updating_basis_or_equiv = inplace
 602                     && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
 603
 604                 if (fd1 == -1) {
 605                         st.st_mode = 0;
 606                         st.st_size = 0;
 607                 } else if (do_fstat(fd1,&st) != 0) {
 608                         rsyserr(FERROR_XFER, errno, "fstat %s failed",
 609                                 full_fname(fnamecmp));
 610                         discard_receive_data(f_in, F_LENGTH(file));
 611                         close(fd1);
 612                         if (inc_recurse)
 613                                 send_msg_int(MSG_NO_SEND, ndx);
 614                         continue;
 615                 }
 616
 617                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 618                         /* this special handling for directories
 619                          * wouldn't be necessary if robust_rename()
 620                          * and the underlying robust_unlink could cope
 621                          * with directories
 622                          */
 623                         rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
 624                                 full_fname(fnamecmp));
 625                         discard_receive_data(f_in, F_LENGTH(file));
 626                         close(fd1);
 627                         if (inc_recurse)
 628                                 send_msg_int(MSG_NO_SEND, ndx);
 629                         continue;
 630                 }
 631
 632                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 633                         close(fd1);
 634                         fd1 = -1;
 635                 }
 636
 637                 /* If we're not preserving permissions, change the file-list's
 638                  * mode based on the local permissions and some heuristics. */
 639                 if (!preserve_perms) {
 640                         int exists = fd1 != -1;
 641 #ifdef SUPPORT_ACLS
 642                         const char *dn = file->dirname ? file->dirname : ".";
 643                         if (parent_dirname != dn
 644                          && strcmp(parent_dirname, dn) != 0) {
 645                                 dflt_perms = default_perms_for_dir(dn);
 646                                 parent_dirname = dn;
 647                         }
 648 #endif
 649                         file->mode = dest_mode(file->mode, st.st_mode,
 650                                                dflt_perms, exists);
 651                 }
 652
 653                 /* We now check to see if we are writing the file "inplace" */
 654                 if (inplace)  {
 655                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
 656                         if (fd2 == -1) {
 657                                 rsyserr(FERROR_XFER, errno, "open %s failed",
 658                                         full_fname(fname));
 659                         }
 660                 } else {
 661                         fd2 = open_tmpfile(fnametmp, fname, file);
 662                         if (fd2 != -1)
 663                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 664                 }
 665
 666                 if (fd2 == -1) {
 667                         discard_receive_data(f_in, F_LENGTH(file));
 668                         if (fd1 != -1)
 669                                 close(fd1);
 670                         if (inc_recurse)
 671                                 send_msg_int(MSG_NO_SEND, ndx);
 672                         continue;
 673                 }
 674
 675                 /* log the transfer */
 676                 if (log_before_transfer)
 677                         log_item(FCLIENT, file, &initial_stats, iflags, NULL);
 678                 else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
 679                         rprintf(FINFO, "%s\n", fname);
 680
 681                 /* recv file data */
 682                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 683                                        fname, fd2, F_LENGTH(file));
 684
 685                 log_item(log_code, file, &initial_stats, iflags, NULL);
 686
 687                 if (fd1 != -1)
 688                         close(fd1);
 689                 if (close(fd2) < 0) {
 690                         rsyserr(FERROR, errno, "close failed on %s",
 691                                 full_fname(fnametmp));
 692                         exit_cleanup(RERR_FILEIO);
 693                 }
 694
 695                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 696                         if (partialptr == fname)
 697                                 partialptr = NULL;
 698                         if (!finish_transfer(fname, fnametmp, fnamecmp,
 699                                              partialptr, file, recv_ok, 1))
 700                                 recv_ok = -1;
 701                         else if (fnamecmp == partialptr) {
 702                                 do_unlink(partialptr);
 703                                 handle_partial_dir(partialptr, PDIR_DELETE);
 704                         }
 705                 } else if (keep_partial && partialptr
 706                     && handle_partial_dir(partialptr, PDIR_CREATE)) {
 707                         if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
 708                                              file, recv_ok, !partial_dir))
 709                                 recv_ok = -1;
 710                         else if (delay_updates && recv_ok) {
 711                                 bitbag_set_bit(delayed_bits, ndx);
 712                                 recv_ok = 2;
 713                         }
 714                 } else {
 715                         partialptr = NULL;
 716                         do_unlink(fnametmp);
 717                 }
 718
 719                 cleanup_disable();
 720
 721                 switch (recv_ok) {
 722                 case 1:
 723                         if (remove_source_files || inc_recurse
 724                          || (preserve_hard_links && F_IS_HLINKED(file)))
 725                                 send_msg_int(MSG_SUCCESS, ndx);
 726                         break;
 727                 case 0: {
 728                         enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
 729                         if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) {
 730                                 char *errstr, *redostr, *keptstr;
 731                                 if (!(keep_partial && partialptr) && !inplace)
 732                                         keptstr = "discarded";
 733                                 else if (partial_dir)
 734                                         keptstr = "put into partial-dir";
 735                                 else
 736                                         keptstr = "retained";
 737                                 if (msgtype == FERROR_XFER) {
 738                                         errstr = "ERROR";
 739                                         redostr = "";
 740                                 } else {
 741                                         errstr = "WARNING";
 742                                         redostr = read_batch ? " (may try again)"
 743                                                              : " (will try again)";
 744                                 }
 745                                 rprintf(msgtype,
 746                                         "%s: %s failed verification -- update %s%s.\n",
 747                                         errstr, local_name ? f_name(file, NULL) : fname,
 748                                         keptstr, redostr);
 749                         }
 750                         if (!redoing) {
 751                                 send_msg_int(MSG_REDO, ndx);
 752                                 file->flags |= FLAG_FILE_SENT;
 753                         } else if (inc_recurse)
 754                                 send_msg_int(MSG_NO_SEND, ndx);
 755                         break;
 756                     }
 757                 case -1:
 758                         if (inc_recurse)
 759                                 send_msg_int(MSG_NO_SEND, ndx);
 760                         break;
 761                 }
 762         }
 763         if (make_backups < 0)
 764                 make_backups = -make_backups;
 765
 766         if (phase == 2 && delay_updates) /* for protocol_version < 29 */
 767                 handle_delayed_updates(local_name);
 768
 769         if (DEBUG_GTE(RECV, 1))
 770                 rprintf(FINFO,"recv_files finished\n");
 771
 772         return 0;
 773 }