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