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