receiver.c

   1 /*
   2  * Routines only used by the receiving process.
   3  *
   4  * Copyright (C) 1996-2000 Andrew Tridgell
   5  * Copyright (C) 1996 Paul Mackerras
   6  * Copyright (C) 2003-2009 Wayne Davison
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 3 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along
  19  * with this program; if not, visit the http://fsf.org website.
  20  */
  21
  22 #include "rsync.h"
  23 #include "inums.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 filter_rule_list daemon_filter_list;
  60
  61 static struct bitbag *delayed_bits = NULL;
  62 static int phase = 0, redoing = 0;
  63 static flist_ndx_list batch_redo_list;
  64 /* We're either updating the basis file or an identical copy: */
  65 static int updating_basis_or_equiv;
  66
  67 #define TMPNAME_SUFFIX ".XXXXXX"
  68 #define TMPNAME_SUFFIX_LEN ((int)sizeof TMPNAME_SUFFIX - 1)
  69 #define MAX_UNIQUE_NUMBER 999999
  70 #define MAX_UNIQUE_LOOP 100
  71
  72 /* get_tmpname() - create a tmp filename for a given filename
  73  *
  74  * If a tmpdir is defined, use that as the directory to put it in.  Otherwise,
  75  * the tmp filename is in the same directory as the given name.  Note that
  76  * there may be no directory at all in the given name!
  77  *
  78  * The tmp filename is basically the given filename with a dot prepended, and
  79  * .XXXXXX appended (for mkstemp() to put its unique gunk in).  We take care
  80  * to not exceed either the MAXPATHLEN or NAME_MAX, especially the last, as
  81  * the basename basically becomes 8 characters longer.  In such a case, the
  82  * original name is shortened sufficiently to make it all fit.
  83  *
  84  * If the make_unique arg is True, the XXXXXX string is replaced with a unique
  85  * string that doesn't exist at the time of the check.  This is intended to be
  86  * used for creating hard links, symlinks, devices, and special files, since
  87  * normal files should be handled by mkstemp() for safety.
  88  *
  89  * Of course, the only reason the file is based on the original name is to
  90  * make it easier to figure out what purpose a temp file is serving when a
  91  * transfer is in progress. */
  92 int get_tmpname(char *fnametmp, const char *fname, BOOL make_unique)
  93 {
  94         int maxname, added, length = 0;
  95         const char *f;
  96         char *suf;
  97
  98         if (tmpdir) {
  99                 /* Note: this can't overflow, so the return value is safe */
 100                 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
 101                 fnametmp[length++] = '/';
 102         }
 103
 104         if ((f = strrchr(fname, '/')) != NULL) {
 105                 ++f;
 106                 if (!tmpdir) {
 107                         length = f - fname;
 108                         /* copy up to and including the slash */
 109                         strlcpy(fnametmp, fname, length + 1);
 110                 }
 111         } else
 112                 f = fname;
 113         fnametmp[length++] = '.';
 114
 115         /* The maxname value is bufsize, and includes space for the '\0'.
 116          * NAME_MAX needs an extra -1 for the name's leading dot. */
 117         maxname = MIN(MAXPATHLEN - length - TMPNAME_SUFFIX_LEN,
 118                       NAME_MAX - 1 - TMPNAME_SUFFIX_LEN);
 119
 120         if (maxname < 1) {
 121                 rprintf(FERROR_XFER, "temporary filename too long: %s\n", fname);
 122                 fnametmp[0] = '\0';
 123                 return 0;
 124         }
 125
 126         added = strlcpy(fnametmp + length, f, maxname);
 127         if (added >= maxname)
 128                 added = maxname - 1;
 129         suf = fnametmp + length + added;
 130
 131         if (make_unique) {
 132                 static unsigned counter_limit;
 133                 unsigned counter;
 134
 135                 if (!counter_limit) {
 136                         counter_limit = (unsigned)getpid() + MAX_UNIQUE_LOOP;
 137                         if (counter_limit > MAX_UNIQUE_NUMBER || counter_limit < MAX_UNIQUE_LOOP)
 138                                 counter_limit = MAX_UNIQUE_LOOP;
 139                 }
 140                 counter = counter_limit - MAX_UNIQUE_LOOP;
 141
 142                 /* This doesn't have to be very good because we don't need
 143                  * to worry about someone trying to guess the values:  all
 144                  * a conflict will do is cause a device, special file, hard
 145                  * link, or symlink to fail to be created.  Also: avoid
 146                  * using mktemp() due to gcc's annoying warning. */
 147                 while (1) {
 148                         snprintf(suf, TMPNAME_SUFFIX_LEN+1, ".%d", counter);
 149                         if (access(fnametmp, 0) < 0)
 150                                 break;
 151                         if (++counter >= counter_limit)
 152                                 return 0;
 153                 }
 154         } else
 155                 memcpy(suf, TMPNAME_SUFFIX, TMPNAME_SUFFIX_LEN+1);
 156
 157         return 1;
 158 }
 159
 160 /* Opens a temporary file for writing.
 161  * Success: Writes name into fnametmp, returns fd.
 162  * Failure: Clobbers fnametmp, returns -1.
 163  * Calling cleanup_set() is the caller's job. */
 164 int open_tmpfile(char *fnametmp, const char *fname, struct file_struct *file)
 165 {
 166         int fd;
 167
 168         if (!get_tmpname(fnametmp, fname, False))
 169                 return -1;
 170
 171         /* We initially set the perms without the setuid/setgid bits or group
 172          * access to ensure that there is no race condition.  They will be
 173          * correctly updated after the right owner and group info is set.
 174          * (Thanks to snabb@epipe.fi for pointing this out.) */
 175         fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 176
 177 #if 0
 178         /* In most cases parent directories will already exist because their
 179          * information should have been previously transferred, but that may
 180          * not be the case with -R */
 181         if (fd == -1 && relative_paths && errno == ENOENT
 182          && make_path(fnametmp, MKP_SKIP_SLASH | MKP_DROP_NAME) == 0) {
 183                 /* Get back to name with XXXXXX in it. */
 184                 get_tmpname(fnametmp, fname, False);
 185                 fd = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 186         }
 187 #endif
 188
 189         if (fd == -1) {
 190                 rsyserr(FERROR_XFER, errno, "mkstemp %s failed",
 191                         full_fname(fnametmp));
 192                 return -1;
 193         }
 194
 195         return fd;
 196 }
 197
 198 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 199                         const char *fname, int fd, OFF_T total_size)
 200 {
 201         static char file_sum1[MAX_DIGEST_LEN];
 202         struct map_struct *mapbuf;
 203         struct sum_struct sum;
 204         int32 len;
 205         OFF_T offset = 0;
 206         OFF_T offset2;
 207         char *data;
 208         int32 i;
 209         char *map = NULL;
 210
 211         read_sum_head(f_in, &sum);
 212
 213         if (fd_r >= 0 && size_r > 0) {
 214                 int32 read_size = MAX(sum.blength * 2, 16*1024);
 215                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
 216                 if (DEBUG_GTE(DELTASUM, 2)) {
 217                         rprintf(FINFO, "recv mapped %s of size %s\n",
 218                                 fname_r, big_num(size_r));
 219                 }
 220         } else
 221                 mapbuf = NULL;
 222
 223         sum_init(checksum_seed);
 224
 225         if (append_mode > 0) {
 226                 OFF_T j;
 227                 sum.flength = (OFF_T)sum.count * sum.blength;
 228                 if (sum.remainder)
 229                         sum.flength -= sum.blength - sum.remainder;
 230                 if (append_mode == 2) {
 231                         for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
 232                                 if (INFO_GTE(PROGRESS, 1))
 233                                         show_progress(offset, total_size);
 234                                 sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
 235                                            CHUNK_SIZE);
 236                                 offset = j;
 237                         }
 238                         if (offset < sum.flength) {
 239                                 int32 len = (int32)(sum.flength - offset);
 240                                 if (INFO_GTE(PROGRESS, 1))
 241                                         show_progress(offset, total_size);
 242                                 sum_update(map_ptr(mapbuf, offset, len), len);
 243                         }
 244                 }
 245                 offset = sum.flength;
 246                 if (fd != -1 && (j = do_lseek(fd, offset, SEEK_SET)) != offset) {
 247                         rsyserr(FERROR_XFER, errno, "lseek of %s returned %s, not %s",
 248                                 full_fname(fname), big_num(j), big_num(offset));
 249                         exit_cleanup(RERR_FILEIO);
 250                 }
 251         }
 252
 253         while ((i = recv_token(f_in, &data)) != 0) {
 254                 if (INFO_GTE(PROGRESS, 1))
 255                         show_progress(offset, total_size);
 256
 257                 if (i > 0) {
 258                         if (DEBUG_GTE(DELTASUM, 3)) {
 259                                 rprintf(FINFO,"data recv %d at %s\n",
 260                                         i, big_num(offset));
 261                         }
 262
 263                         stats.literal_data += i;
 264                         cleanup_got_literal = 1;
 265
 266                         sum_update(data, i);
 267
 268                         if (fd != -1 && write_file(fd,data,i) != i)
 269                                 goto report_write_error;
 270                         offset += i;
 271                         continue;
 272                 }
 273
 274                 i = -(i+1);
 275                 offset2 = i * (OFF_T)sum.blength;
 276                 len = sum.blength;
 277                 if (i == (int)sum.count-1 && sum.remainder != 0)
 278                         len = sum.remainder;
 279
 280                 stats.matched_data += len;
 281
 282                 if (DEBUG_GTE(DELTASUM, 3)) {
 283                         rprintf(FINFO,
 284                                 "chunk[%d] of size %ld at %s offset=%s\n",
 285                                 i, (long)len, big_num(offset2), big_num(offset));
 286                 }
 287
 288                 if (mapbuf) {
 289                         map = map_ptr(mapbuf,offset2,len);
 290
 291                         see_token(map, len);
 292                         sum_update(map, len);
 293                 }
 294
 295                 if (updating_basis_or_equiv) {
 296                         if (offset == offset2 && fd != -1) {
 297                                 OFF_T pos;
 298                                 if (flush_write_file(fd) < 0)
 299                                         goto report_write_error;
 300                                 offset += len;
 301                                 if ((pos = do_lseek(fd, len, SEEK_CUR)) != offset) {
 302                                         rsyserr(FERROR_XFER, errno,
 303                                                 "lseek of %s returned %s, not %s",
 304                                                 full_fname(fname),
 305                                                 big_num(pos), big_num(offset));
 306                                         exit_cleanup(RERR_FILEIO);
 307                                 }
 308                                 continue;
 309                         }
 310                 }
 311                 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
 312                         goto report_write_error;
 313                 offset += len;
 314         }
 315
 316         if (flush_write_file(fd) < 0)
 317                 goto report_write_error;
 318
 319 #ifdef HAVE_FTRUNCATE
 320         if (inplace && fd != -1
 321          && ftruncate(fd, offset) < 0) {
 322                 rsyserr(FERROR_XFER, errno, "ftruncate failed on %s",
 323                         full_fname(fname));
 324         }
 325 #endif
 326
 327         if (INFO_GTE(PROGRESS, 1))
 328                 end_progress(total_size);
 329
 330         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 331             report_write_error:
 332                 rsyserr(FERROR_XFER, errno, "write failed on %s",
 333                         full_fname(fname));
 334                 exit_cleanup(RERR_FILEIO);
 335         }
 336
 337         if (sum_end(file_sum1) != checksum_len)
 338                 overflow_exit("checksum_len"); /* Impossible... */
 339
 340         if (mapbuf)
 341                 unmap_file(mapbuf);
 342
 343         read_buf(f_in, sender_file_sum, checksum_len);
 344         if (DEBUG_GTE(DELTASUM, 2))
 345                 rprintf(FINFO,"got file_sum\n");
 346         if (fd != -1 && memcmp(file_sum1, sender_file_sum, checksum_len) != 0)
 347                 return 0;
 348         return 1;
 349 }
 350
 351
 352 static void discard_receive_data(int f_in, OFF_T length)
 353 {
 354         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 355 }
 356
 357 static void handle_delayed_updates(char *local_name)
 358 {
 359         char *fname, *partialptr;
 360         int ndx;
 361
 362         for (ndx = -1; (ndx = bitbag_next_bit(delayed_bits, ndx)) >= 0; ) {
 363                 struct file_struct *file = cur_flist->files[ndx];
 364                 fname = local_name ? local_name : f_name(file, NULL);
 365                 if ((partialptr = partial_dir_fname(fname)) != NULL) {
 366                         if (make_backups > 0 && !make_backup(fname, False))
 367                                 continue;
 368                         if (DEBUG_GTE(RECV, 1)) {
 369                                 rprintf(FINFO, "renaming %s to %s\n",
 370                                         partialptr, fname);
 371                         }
 372                         /* We don't use robust_rename() here because the
 373                          * partial-dir must be on the same drive. */
 374                         if (do_rename(partialptr, fname) < 0) {
 375                                 rsyserr(FERROR_XFER, errno,
 376                                         "rename failed for %s (from %s)",
 377                                         full_fname(fname), partialptr);
 378                         } else {
 379                                 if (remove_source_files
 380                                  || (preserve_hard_links && F_IS_HLINKED(file)))
 381                                         send_msg_int(MSG_SUCCESS, ndx);
 382                                 handle_partial_dir(partialptr, PDIR_DELETE);
 383                         }
 384                 }
 385         }
 386 }
 387
 388 static void no_batched_update(int ndx, BOOL is_redo)
 389 {
 390         struct file_list *flist = flist_for_ndx(ndx, "no_batched_update");
 391         struct file_struct *file = flist->files[ndx - flist->ndx_start];
 392
 393         rprintf(FERROR_XFER, "(No batched update for%s \"%s\")\n",
 394                 is_redo ? " resend of" : "", f_name(file, NULL));
 395
 396         if (inc_recurse && !dry_run)
 397                 send_msg_int(MSG_NO_SEND, ndx);
 398 }
 399
 400 static int we_want_redo(int desired_ndx)
 401 {
 402         static int redo_ndx = -1;
 403
 404         while (redo_ndx < desired_ndx) {
 405                 if (redo_ndx >= 0)
 406                         no_batched_update(redo_ndx, True);
 407                 if ((redo_ndx = flist_ndx_pop(&batch_redo_list)) < 0)
 408                         return 0;
 409         }
 410
 411         if (redo_ndx == desired_ndx) {
 412                 redo_ndx = -1;
 413                 return 1;
 414         }
 415
 416         return 0;
 417 }
 418
 419 static int gen_wants_ndx(int desired_ndx, int flist_num)
 420 {
 421         static int next_ndx = -1;
 422         static int done_cnt = 0;
 423         static BOOL got_eof = False;
 424
 425         if (got_eof)
 426                 return 0;
 427
 428         /* TODO: integrate gen-reading I/O into perform_io() so this is not needed? */
 429         io_flush(FULL_FLUSH);
 430
 431         while (next_ndx < desired_ndx) {
 432                 if (inc_recurse && flist_num <= done_cnt)
 433                         return 0;
 434                 if (next_ndx >= 0)
 435                         no_batched_update(next_ndx, False);
 436                 if ((next_ndx = read_int(batch_gen_fd)) < 0) {
 437                         if (inc_recurse) {
 438                                 done_cnt++;
 439                                 continue;
 440                         }
 441                         got_eof = True;
 442                         return 0;
 443                 }
 444         }
 445
 446         if (next_ndx == desired_ndx) {
 447                 next_ndx = -1;
 448                 return 1;
 449         }
 450
 451         return 0;
 452 }
 453
 454 /**
 455  * main routine for receiver process.
 456  *
 457  * Receiver process runs on the same host as the generator process. */
 458 int recv_files(int f_in, int f_out, char *local_name)
 459 {
 460         int fd1,fd2;
 461         STRUCT_STAT st;
 462         int iflags, xlen;
 463         char *fname, fbuf[MAXPATHLEN];
 464         char xname[MAXPATHLEN];
 465         char fnametmp[MAXPATHLEN];
 466         char *fnamecmp, *partialptr;
 467         char fnamecmpbuf[MAXPATHLEN];
 468         uchar fnamecmp_type;
 469         struct file_struct *file;
 470         int itemizing = am_server ? logfile_format_has_i : stdout_format_has_i;
 471         enum logcode log_code = log_before_transfer ? FLOG : FINFO;
 472         int max_phase = protocol_version >= 29 ? 2 : 1;
 473         int dflt_perms = (ACCESSPERMS & ~orig_umask);
 474 #ifdef SUPPORT_ACLS
 475         const char *parent_dirname = "";
 476 #endif
 477         int ndx, recv_ok;
 478
 479         if (DEBUG_GTE(RECV, 1))
 480                 rprintf(FINFO, "recv_files(%d) starting\n", cur_flist->used);
 481
 482         if (delay_updates)
 483                 delayed_bits = bitbag_create(cur_flist->used + 1);
 484
 485         while (1) {
 486                 cleanup_disable();
 487
 488                 /* This call also sets cur_flist. */
 489                 ndx = read_ndx_and_attrs(f_in, f_out, &iflags, &fnamecmp_type,
 490                                          xname, &xlen);
 491                 if (ndx == NDX_DONE) {
 492                         if (!am_server && INFO_GTE(PROGRESS, 2) && cur_flist) {
 493                                 set_current_file_index(NULL, 0);
 494                                 end_progress(0);
 495                         }
 496                         if (inc_recurse && first_flist) {
 497                                 if (read_batch) {
 498                                         ndx = first_flist->used + first_flist->ndx_start;
 499                                         gen_wants_ndx(ndx, first_flist->flist_num);
 500                                 }
 501                                 flist_free(first_flist);
 502                                 if (first_flist)
 503                                         continue;
 504                         } else if (read_batch && first_flist) {
 505                                 ndx = first_flist->used;
 506                                 gen_wants_ndx(ndx, first_flist->flist_num);
 507                         }
 508                         if (++phase > max_phase)
 509                                 break;
 510                         if (DEBUG_GTE(RECV, 1))
 511                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 512                         if (phase == 2 && delay_updates)
 513                                 handle_delayed_updates(local_name);
 514                         write_int(f_out, NDX_DONE);
 515                         continue;
 516                 }
 517
 518                 if (ndx - cur_flist->ndx_start >= 0)
 519                         file = cur_flist->files[ndx - cur_flist->ndx_start];
 520                 else
 521                         file = dir_flist->files[cur_flist->parent_ndx];
 522                 fname = local_name ? local_name : f_name(file, fbuf);
 523
 524                 if (DEBUG_GTE(RECV, 1))
 525                         rprintf(FINFO, "recv_files(%s)\n", fname);
 526
 527 #ifdef SUPPORT_XATTRS
 528                 if (iflags & ITEM_REPORT_XATTR && do_xfers)
 529                         recv_xattr_request(file, f_in);
 530 #endif
 531
 532                 if (!(iflags & ITEM_TRANSFER)) {
 533                         maybe_log_item(file, iflags, itemizing, xname);
 534 #ifdef SUPPORT_XATTRS
 535                         if (preserve_xattrs && iflags & ITEM_REPORT_XATTR && do_xfers)
 536                                 set_file_attrs(fname, file, NULL, fname, 0);
 537 #endif
 538                         if (iflags & ITEM_IS_NEW) {
 539                                 stats.created_files++;
 540                                 if (S_ISREG(file->mode)) {
 541                                         /* Nothing further to count. */
 542                                 } else if (S_ISDIR(file->mode))
 543                                         stats.created_dirs++;
 544 #ifdef SUPPORT_LINKS
 545                                 else if (S_ISLNK(file->mode))
 546                                         stats.created_symlinks++;
 547 #endif
 548                                 else if (IS_DEVICE(file->mode))
 549                                         stats.created_devices++;
 550                                 else
 551                                         stats.created_specials++;
 552                         }
 553                         continue;
 554                 }
 555                 if (phase == 2) {
 556                         rprintf(FERROR,
 557                                 "got transfer request in phase 2 [%s]\n",
 558                                 who_am_i());
 559                         exit_cleanup(RERR_PROTOCOL);
 560                 }
 561
 562                 if (file->flags & FLAG_FILE_SENT) {
 563                         if (csum_length == SHORT_SUM_LENGTH) {
 564                                 if (keep_partial && !partial_dir)
 565                                         make_backups = -make_backups; /* prevents double backup */
 566                                 if (append_mode)
 567                                         sparse_files = -sparse_files;
 568                                 append_mode = -append_mode;
 569                                 csum_length = SUM_LENGTH;
 570                                 redoing = 1;
 571                         }
 572                 } else {
 573                         if (csum_length != SHORT_SUM_LENGTH) {
 574                                 if (keep_partial && !partial_dir)
 575                                         make_backups = -make_backups;
 576                                 if (append_mode)
 577                                         sparse_files = -sparse_files;
 578                                 append_mode = -append_mode;
 579                                 csum_length = SHORT_SUM_LENGTH;
 580                                 redoing = 0;
 581                         }
 582                         if (iflags & ITEM_IS_NEW)
 583                                 stats.created_files++;
 584                 }
 585
 586                 if (!am_server && INFO_GTE(PROGRESS, 1))
 587                         set_current_file_index(file, ndx);
 588                 stats.xferred_files++;
 589                 stats.total_transferred_size += F_LENGTH(file);
 590
 591                 cleanup_got_literal = 0;
 592
 593                 if (daemon_filter_list.head
 594                     && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0) {
 595                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 596                         exit_cleanup(RERR_PROTOCOL);
 597                 }
 598
 599                 if (read_batch) {
 600                         int wanted = redoing
 601                                    ? we_want_redo(ndx)
 602                                    : gen_wants_ndx(ndx, cur_flist->flist_num);
 603                         if (!wanted) {
 604                                 rprintf(FINFO,
 605                                         "(Skipping batched update for%s \"%s\")\n",
 606                                         redoing ? " resend of" : "",
 607                                         fname);
 608                                 discard_receive_data(f_in, F_LENGTH(file));
 609                                 file->flags |= FLAG_FILE_SENT;
 610                                 continue;
 611                         }
 612                 }
 613
 614                 if (!log_before_transfer)
 615                         remember_initial_stats();
 616
 617                 if (!do_xfers) { /* log the transfer */
 618                         log_item(FCLIENT, file, iflags, NULL);
 619                         if (read_batch)
 620                                 discard_receive_data(f_in, F_LENGTH(file));
 621                         continue;
 622                 }
 623                 if (write_batch < 0) {
 624                         log_item(FCLIENT, file, iflags, NULL);
 625                         if (!am_server)
 626                                 discard_receive_data(f_in, F_LENGTH(file));
 627                         continue;
 628                 }
 629
 630                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 631
 632                 if (protocol_version >= 29) {
 633                         switch (fnamecmp_type) {
 634                         case FNAMECMP_FNAME:
 635                                 fnamecmp = fname;
 636                                 break;
 637                         case FNAMECMP_PARTIAL_DIR:
 638                                 fnamecmp = partialptr;
 639                                 break;
 640                         case FNAMECMP_BACKUP:
 641                                 fnamecmp = get_backup_name(fname);
 642                                 break;
 643                         case FNAMECMP_FUZZY:
 644                                 if (file->dirname) {
 645                                         pathjoin(fnamecmpbuf, MAXPATHLEN,
 646                                                  file->dirname, xname);
 647                                         fnamecmp = fnamecmpbuf;
 648                                 } else
 649                                         fnamecmp = xname;
 650                                 break;
 651                         default:
 652                                 if (fnamecmp_type >= basis_dir_cnt) {
 653                                         rprintf(FERROR,
 654                                                 "invalid basis_dir index: %d.\n",
 655                                                 fnamecmp_type);
 656                                         exit_cleanup(RERR_PROTOCOL);
 657                                 }
 658                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 659                                          basis_dir[fnamecmp_type], fname);
 660                                 fnamecmp = fnamecmpbuf;
 661                                 break;
 662                         }
 663                         if (!fnamecmp || (daemon_filter_list.head
 664                           && check_filter(&daemon_filter_list, FLOG, fname, 0) < 0)) {
 665                                 fnamecmp = fname;
 666                                 fnamecmp_type = FNAMECMP_FNAME;
 667                         }
 668                 } else {
 669                         /* Reminder: --inplace && --partial-dir are never
 670                          * enabled at the same time. */
 671                         if (inplace && make_backups > 0) {
 672                                 if (!(fnamecmp = get_backup_name(fname)))
 673                                         fnamecmp = fname;
 674                                 else
 675                                         fnamecmp_type = FNAMECMP_BACKUP;
 676                         } else if (partial_dir && partialptr)
 677                                 fnamecmp = partialptr;
 678                         else
 679                                 fnamecmp = fname;
 680                 }
 681
 682                 /* open the file */
 683                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 684
 685                 if (fd1 == -1 && protocol_version < 29) {
 686                         if (fnamecmp != fname) {
 687                                 fnamecmp = fname;
 688                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 689                         }
 690
 691                         if (fd1 == -1 && basis_dir[0]) {
 692                                 /* pre-29 allowed only one alternate basis */
 693                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 694                                          basis_dir[0], fname);
 695                                 fnamecmp = fnamecmpbuf;
 696                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 697                         }
 698                 }
 699
 700                 updating_basis_or_equiv = inplace
 701                     && (fnamecmp == fname || fnamecmp_type == FNAMECMP_BACKUP);
 702
 703                 if (fd1 == -1) {
 704                         st.st_mode = 0;
 705                         st.st_size = 0;
 706                 } else if (do_fstat(fd1,&st) != 0) {
 707                         rsyserr(FERROR_XFER, errno, "fstat %s failed",
 708                                 full_fname(fnamecmp));
 709                         discard_receive_data(f_in, F_LENGTH(file));
 710                         close(fd1);
 711                         if (inc_recurse)
 712                                 send_msg_int(MSG_NO_SEND, ndx);
 713                         continue;
 714                 }
 715
 716                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 717                         /* this special handling for directories
 718                          * wouldn't be necessary if robust_rename()
 719                          * and the underlying robust_unlink could cope
 720                          * with directories
 721                          */
 722                         rprintf(FERROR_XFER, "recv_files: %s is a directory\n",
 723                                 full_fname(fnamecmp));
 724                         discard_receive_data(f_in, F_LENGTH(file));
 725                         close(fd1);
 726                         if (inc_recurse)
 727                                 send_msg_int(MSG_NO_SEND, ndx);
 728                         continue;
 729                 }
 730
 731                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 732                         close(fd1);
 733                         fd1 = -1;
 734                 }
 735
 736                 /* If we're not preserving permissions, change the file-list's
 737                  * mode based on the local permissions and some heuristics. */
 738                 if (!preserve_perms) {
 739                         int exists = fd1 != -1;
 740 #ifdef SUPPORT_ACLS
 741                         const char *dn = file->dirname ? file->dirname : ".";
 742                         if (parent_dirname != dn
 743                          && strcmp(parent_dirname, dn) != 0) {
 744                                 dflt_perms = default_perms_for_dir(dn);
 745                                 parent_dirname = dn;
 746                         }
 747 #endif
 748                         file->mode = dest_mode(file->mode, st.st_mode,
 749                                                dflt_perms, exists);
 750                 }
 751
 752                 /* We now check to see if we are writing the file "inplace" */
 753                 if (inplace)  {
 754                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
 755                         if (fd2 == -1) {
 756                                 rsyserr(FERROR_XFER, errno, "open %s failed",
 757                                         full_fname(fname));
 758                         }
 759                 } else {
 760                         fd2 = open_tmpfile(fnametmp, fname, file);
 761                         if (fd2 != -1)
 762                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 763                 }
 764
 765                 if (fd2 == -1) {
 766                         discard_receive_data(f_in, F_LENGTH(file));
 767                         if (fd1 != -1)
 768                                 close(fd1);
 769                         if (inc_recurse)
 770                                 send_msg_int(MSG_NO_SEND, ndx);
 771                         continue;
 772                 }
 773
 774                 /* log the transfer */
 775                 if (log_before_transfer)
 776                         log_item(FCLIENT, file, iflags, NULL);
 777                 else if (!am_server && INFO_GTE(NAME, 1) && INFO_EQ(PROGRESS, 1))
 778                         rprintf(FINFO, "%s\n", fname);
 779
 780                 /* recv file data */
 781                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 782                                        fname, fd2, F_LENGTH(file));
 783
 784                 log_item(log_code, file, iflags, NULL);
 785
 786                 if (fd1 != -1)
 787                         close(fd1);
 788                 if (close(fd2) < 0) {
 789                         rsyserr(FERROR, errno, "close failed on %s",
 790                                 full_fname(fnametmp));
 791                         exit_cleanup(RERR_FILEIO);
 792                 }
 793
 794                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 795                         if (partialptr == fname)
 796                                 partialptr = NULL;
 797                         if (!finish_transfer(fname, fnametmp, fnamecmp,
 798                                              partialptr, file, recv_ok, 1))
 799                                 recv_ok = -1;
 800                         else if (fnamecmp == partialptr) {
 801                                 do_unlink(partialptr);
 802                                 handle_partial_dir(partialptr, PDIR_DELETE);
 803                         }
 804                 } else if (keep_partial && partialptr) {
 805                         if (!handle_partial_dir(partialptr, PDIR_CREATE)) {
 806                                 rprintf(FERROR,
 807                                     "Unable to create partial-dir for %s -- discarding %s.\n",
 808                                     local_name ? local_name : f_name(file, NULL),
 809                                     recv_ok ? "completed file" : "partial file");
 810                                 do_unlink(fnametmp);
 811                                 recv_ok = -1;
 812                         } else if (!finish_transfer(partialptr, fnametmp, fnamecmp, NULL,
 813                                                     file, recv_ok, !partial_dir))
 814                                 recv_ok = -1;
 815                         else if (delay_updates && recv_ok) {
 816                                 bitbag_set_bit(delayed_bits, ndx);
 817                                 recv_ok = 2;
 818                         } else
 819                                 partialptr = NULL;
 820                 } else
 821                         do_unlink(fnametmp);
 822
 823                 cleanup_disable();
 824
 825                 if (read_batch)
 826                         file->flags |= FLAG_FILE_SENT;
 827
 828                 switch (recv_ok) {
 829                 case 2:
 830                         break;
 831                 case 1:
 832                         if (remove_source_files || inc_recurse
 833                          || (preserve_hard_links && F_IS_HLINKED(file)))
 834                                 send_msg_int(MSG_SUCCESS, ndx);
 835                         break;
 836                 case 0: {
 837                         enum logcode msgtype = redoing ? FERROR_XFER : FWARNING;
 838                         if (msgtype == FERROR_XFER || INFO_GTE(NAME, 1)) {
 839                                 char *errstr, *redostr, *keptstr;
 840                                 if (!(keep_partial && partialptr) && !inplace)
 841                                         keptstr = "discarded";
 842                                 else if (partial_dir)
 843                                         keptstr = "put into partial-dir";
 844                                 else
 845                                         keptstr = "retained";
 846                                 if (msgtype == FERROR_XFER) {
 847                                         errstr = "ERROR";
 848                                         redostr = "";
 849                                 } else {
 850                                         errstr = "WARNING";
 851                                         redostr = read_batch ? " (may try again)"
 852                                                              : " (will try again)";
 853                                 }
 854                                 rprintf(msgtype,
 855                                         "%s: %s failed verification -- update %s%s.\n",
 856                                         errstr, local_name ? f_name(file, NULL) : fname,
 857                                         keptstr, redostr);
 858                         }
 859                         if (!redoing) {
 860                                 if (read_batch)
 861                                         flist_ndx_push(&batch_redo_list, ndx);
 862                                 send_msg_int(MSG_REDO, ndx);
 863                                 file->flags |= FLAG_FILE_SENT;
 864                         } else if (inc_recurse)
 865                                 send_msg_int(MSG_NO_SEND, ndx);
 866                         break;
 867                     }
 868                 case -1:
 869                         if (inc_recurse)
 870                                 send_msg_int(MSG_NO_SEND, ndx);
 871                         break;
 872                 }
 873         }
 874         if (make_backups < 0)
 875                 make_backups = -make_backups;
 876
 877         if (phase == 2 && delay_updates) /* for protocol_version < 29 */
 878                 handle_delayed_updates(local_name);
 879
 880         if (DEBUG_GTE(RECV, 1))
 881                 rprintf(FINFO,"recv_files finished\n");
 882
 883         return 0;
 884 }