receiver.c

   1 /* -*- c-file-style: "linux" -*-
   2
   3    Copyright (C) 1996-2000 by Andrew Tridgell
   4    Copyright (C) Paul Mackerras 1996
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  19 */
  20
  21 #include "rsync.h"
  22
  23 extern int verbose;
  24 extern int do_xfers;
  25 extern int am_daemon;
  26 extern int am_server;
  27 extern int do_progress;
  28 extern int log_before_transfer;
  29 extern int log_format_has_i;
  30 extern int daemon_log_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 keep_dirlinks;
  38 extern int preserve_hard_links;
  39 extern int preserve_perms;
  40 extern int io_error;
  41 extern int basis_dir_cnt;
  42 extern int make_backups;
  43 extern int cleanup_got_literal;
  44 extern int remove_sent_files;
  45 extern int module_id;
  46 extern int ignore_errors;
  47 extern int orig_umask;
  48 extern int append_mode;
  49 extern int sparse_files;
  50 extern int keep_partial;
  51 extern int checksum_seed;
  52 extern int inplace;
  53 extern int delay_updates;
  54 extern struct stats stats;
  55 extern char *log_format;
  56 extern char *tmpdir;
  57 extern char *partial_dir;
  58 extern char *basis_dir[];
  59 extern struct file_list *the_file_list;
  60 extern struct filter_list_struct server_filter_list;
  61
  62 #define SLOT_SIZE       (16*1024)       /* Desired size in bytes */
  63 #define PER_SLOT_BITS   (SLOT_SIZE * 8) /* Number of bits per slot */
  64 #define PER_SLOT_INTS   (SLOT_SIZE / 4) /* Number of int32s per slot */
  65
  66 static uint32 **delayed_bits = NULL;
  67 static int delayed_slot_cnt = 0;
  68 static int phase = 0;
  69
  70 static void init_delayed_bits(int max_ndx)
  71 {
  72         delayed_slot_cnt = (max_ndx + PER_SLOT_BITS - 1) / PER_SLOT_BITS;
  73
  74         if (!(delayed_bits = (uint32**)calloc(delayed_slot_cnt, sizeof (uint32*))))
  75                 out_of_memory("set_delayed_bit");
  76 }
  77
  78 static void set_delayed_bit(int ndx)
  79 {
  80         int slot = ndx / PER_SLOT_BITS;
  81         ndx %= PER_SLOT_BITS;
  82
  83         if (!delayed_bits[slot]) {
  84                 if (!(delayed_bits[slot] = (uint32*)calloc(PER_SLOT_INTS, 4)))
  85                         out_of_memory("set_delayed_bit");
  86         }
  87
  88         delayed_bits[slot][ndx/32] |= 1u << (ndx % 32);
  89 }
  90
  91 /* Call this with -1 to start checking from 0.  Returns -1 at the end. */
  92 static int next_delayed_bit(int after)
  93 {
  94         uint32 bits, mask;
  95         int i, ndx = after + 1;
  96         int slot = ndx / PER_SLOT_BITS;
  97         ndx %= PER_SLOT_BITS;
  98
  99         mask = (1u << (ndx % 32)) - 1;
 100         for (i = ndx / 32; slot < delayed_slot_cnt; slot++, i = mask = 0) {
 101                 if (!delayed_bits[slot])
 102                         continue;
 103                 for ( ; i < PER_SLOT_INTS; i++, mask = 0) {
 104                         if (!(bits = delayed_bits[slot][i] & ~mask))
 105                                 continue;
 106                         /* The xor magic figures out the lowest enabled bit in
 107                          * bits, and the switch quickly computes log2(bit). */
 108                         switch (bits ^ (bits & (bits-1))) {
 109 #define LOG2(n) case 1u << n: return slot*PER_SLOT_BITS + i*32 + n
 110                             LOG2(0);  LOG2(1);  LOG2(2);  LOG2(3);
 111                             LOG2(4);  LOG2(5);  LOG2(6);  LOG2(7);
 112                             LOG2(8);  LOG2(9);  LOG2(10); LOG2(11);
 113                             LOG2(12); LOG2(13); LOG2(14); LOG2(15);
 114                             LOG2(16); LOG2(17); LOG2(18); LOG2(19);
 115                             LOG2(20); LOG2(21); LOG2(22); LOG2(23);
 116                             LOG2(24); LOG2(25); LOG2(26); LOG2(27);
 117                             LOG2(28); LOG2(29); LOG2(30); LOG2(31);
 118                         }
 119                         return -1; /* impossible... */
 120                 }
 121         }
 122
 123         return -1;
 124 }
 125
 126
 127 /*
 128  * get_tmpname() - create a tmp filename for a given filename
 129  *
 130  *   If a tmpdir is defined, use that as the directory to
 131  *   put it in.  Otherwise, the tmp filename is in the same
 132  *   directory as the given name.  Note that there may be no
 133  *   directory at all in the given name!
 134  *
 135  *   The tmp filename is basically the given filename with a
 136  *   dot prepended, and .XXXXXX appended (for mkstemp() to
 137  *   put its unique gunk in).  Take care to not exceed
 138  *   either the MAXPATHLEN or NAME_MAX, esp. the last, as
 139  *   the basename basically becomes 8 chars longer. In that
 140  *   case, the original name is shortened sufficiently to
 141  *   make it all fit.
 142  *
 143  *   Of course, there's no real reason for the tmp name to
 144  *   look like the original, except to satisfy us humans.
 145  *   As long as it's unique, rsync will work.
 146  */
 147
 148 static int get_tmpname(char *fnametmp, char *fname)
 149 {
 150         char *f;
 151         int     length = 0;
 152         int     maxname;
 153
 154         if (tmpdir) {
 155                 /* Note: this can't overflow, so the return value is safe */
 156                 length = strlcpy(fnametmp, tmpdir, MAXPATHLEN - 2);
 157                 fnametmp[length++] = '/';
 158                 fnametmp[length] = '\0';        /* always NULL terminated */
 159         }
 160
 161         if ((f = strrchr(fname, '/')) != NULL) {
 162                 ++f;
 163                 if (!tmpdir) {
 164                         length = f - fname;
 165                         /* copy up to and including the slash */
 166                         strlcpy(fnametmp, fname, length + 1);
 167                 }
 168         } else
 169                 f = fname;
 170         fnametmp[length++] = '.';
 171         fnametmp[length] = '\0';                /* always NULL terminated */
 172
 173         maxname = MIN(MAXPATHLEN - 7 - length, NAME_MAX - 8);
 174
 175         if (maxname < 1) {
 176                 rprintf(FERROR, "temporary filename too long: %s\n",
 177                         safe_fname(fname));
 178                 fnametmp[0] = '\0';
 179                 return 0;
 180         }
 181
 182         strlcpy(fnametmp + length, f, maxname);
 183         strcat(fnametmp + length, ".XXXXXX");
 184
 185         return 1;
 186 }
 187
 188
 189 static int receive_data(int f_in, char *fname_r, int fd_r, OFF_T size_r,
 190                         char *fname, int fd, OFF_T total_size)
 191 {
 192         static char file_sum1[MD4_SUM_LENGTH];
 193         static char file_sum2[MD4_SUM_LENGTH];
 194         struct map_struct *mapbuf;
 195         struct sum_struct sum;
 196         int32 len;
 197         OFF_T offset = 0;
 198         OFF_T offset2;
 199         char *data;
 200         int32 i;
 201         char *map = NULL;
 202
 203         read_sum_head(f_in, &sum);
 204
 205         if (fd_r >= 0 && size_r > 0) {
 206                 int32 read_size = MAX(sum.blength * 2, 16*1024);
 207                 mapbuf = map_file(fd_r, size_r, read_size, sum.blength);
 208                 if (verbose > 2) {
 209                         rprintf(FINFO, "recv mapped %s of size %.0f\n",
 210                                 safe_fname(fname_r), (double)size_r);
 211                 }
 212         } else
 213                 mapbuf = NULL;
 214
 215         sum_init(checksum_seed);
 216
 217         if (append_mode) {
 218                 OFF_T j;
 219                 sum.flength = (OFF_T)sum.count * sum.blength;
 220                 if (sum.remainder)
 221                         sum.flength -= sum.blength - sum.remainder;
 222                 for (j = CHUNK_SIZE; j < sum.flength; j += CHUNK_SIZE) {
 223                         if (do_progress)
 224                                 show_progress(offset, total_size);
 225                         sum_update(map_ptr(mapbuf, offset, CHUNK_SIZE),
 226                                    CHUNK_SIZE);
 227                         offset = j;
 228                 }
 229                 if (offset < sum.flength) {
 230                         int32 len = sum.flength - offset;
 231                         if (do_progress)
 232                                 show_progress(offset, total_size);
 233                         sum_update(map_ptr(mapbuf, offset, len), len);
 234                         offset = sum.flength;
 235                 }
 236                 if (fd != -1 && do_lseek(fd, offset, SEEK_SET) != offset) {
 237                         rsyserr(FERROR, errno, "lseek failed on %s",
 238                                 full_fname(fname));
 239                         exit_cleanup(RERR_FILEIO);
 240                 }
 241         }
 242
 243         while ((i = recv_token(f_in, &data)) != 0) {
 244                 if (do_progress)
 245                         show_progress(offset, total_size);
 246
 247                 if (i > 0) {
 248                         if (verbose > 3) {
 249                                 rprintf(FINFO,"data recv %d at %.0f\n",
 250                                         i,(double)offset);
 251                         }
 252
 253                         stats.literal_data += i;
 254                         cleanup_got_literal = 1;
 255
 256                         sum_update(data, i);
 257
 258                         if (fd != -1 && write_file(fd,data,i) != i)
 259                                 goto report_write_error;
 260                         offset += i;
 261                         continue;
 262                 }
 263
 264                 i = -(i+1);
 265                 offset2 = i * (OFF_T)sum.blength;
 266                 len = sum.blength;
 267                 if (i == (int)sum.count-1 && sum.remainder != 0)
 268                         len = sum.remainder;
 269
 270                 stats.matched_data += len;
 271
 272                 if (verbose > 3) {
 273                         rprintf(FINFO,
 274                                 "chunk[%d] of size %ld at %.0f offset=%.0f\n",
 275                                 i, (long)len, (double)offset2, (double)offset);
 276                 }
 277
 278                 if (mapbuf) {
 279                         map = map_ptr(mapbuf,offset2,len);
 280
 281                         see_token(map, len);
 282                         sum_update(map, len);
 283                 }
 284
 285                 if (inplace) {
 286                         if (offset == offset2 && fd != -1) {
 287                                 if (flush_write_file(fd) < 0)
 288                                         goto report_write_error;
 289                                 offset += len;
 290                                 if (do_lseek(fd, len, SEEK_CUR) != offset) {
 291                                         rsyserr(FERROR, errno,
 292                                                 "lseek failed on %s",
 293                                                 full_fname(fname));
 294                                         exit_cleanup(RERR_FILEIO);
 295                                 }
 296                                 continue;
 297                         }
 298                 }
 299                 if (fd != -1 && map && write_file(fd, map, len) != (int)len)
 300                         goto report_write_error;
 301                 offset += len;
 302         }
 303
 304         if (flush_write_file(fd) < 0)
 305                 goto report_write_error;
 306
 307 #ifdef HAVE_FTRUNCATE
 308         if (inplace && fd != -1)
 309                 ftruncate(fd, offset);
 310 #endif
 311
 312         if (do_progress)
 313                 end_progress(total_size);
 314
 315         if (fd != -1 && offset > 0 && sparse_end(fd) != 0) {
 316             report_write_error:
 317                 rsyserr(FERROR, errno, "write failed on %s",
 318                         full_fname(fname));
 319                 exit_cleanup(RERR_FILEIO);
 320         }
 321
 322         sum_end(file_sum1);
 323
 324         if (mapbuf)
 325                 unmap_file(mapbuf);
 326
 327         read_buf(f_in,file_sum2,MD4_SUM_LENGTH);
 328         if (verbose > 2)
 329                 rprintf(FINFO,"got file_sum\n");
 330         if (fd != -1 && memcmp(file_sum1, file_sum2, MD4_SUM_LENGTH) != 0)
 331                 return 0;
 332         return 1;
 333 }
 334
 335
 336 static void discard_receive_data(int f_in, OFF_T length)
 337 {
 338         receive_data(f_in, NULL, -1, 0, NULL, -1, length);
 339 }
 340
 341 static void handle_delayed_updates(struct file_list *flist, char *local_name)
 342 {
 343         char *fname, *partialptr, numbuf[4];
 344         int i;
 345
 346         for (i = -1; (i = next_delayed_bit(i)) >= 0; ) {
 347                 struct file_struct *file = flist->files[i];
 348                 fname = local_name ? local_name : f_name(file);
 349                 if ((partialptr = partial_dir_fname(fname)) != NULL) {
 350                         if (make_backups && !make_backup(fname))
 351                                 continue;
 352                         if (verbose > 2) {
 353                                 rprintf(FINFO, "renaming %s to %s\n",
 354                                         safe_fname(partialptr),
 355                                         safe_fname(fname));
 356                         }
 357                         if (do_rename(partialptr, fname) < 0) {
 358                                 rsyserr(FERROR, errno,
 359                                         "rename failed for %s (from %s)",
 360                                         full_fname(fname),
 361                                         safe_fname(partialptr));
 362                         } else {
 363                                 if (remove_sent_files
 364                                     || (preserve_hard_links
 365                                      && file->link_u.links)) {
 366                                         SIVAL(numbuf, 0, i);
 367                                         send_msg(MSG_SUCCESS,numbuf,4);
 368                                 }
 369                                 handle_partial_dir(partialptr,
 370                                                    PDIR_DELETE);
 371                         }
 372                 }
 373         }
 374 }
 375
 376 static int get_next_gen_i(int batch_gen_fd, int next_gen_i, int desired_i)
 377 {
 378         while (next_gen_i < desired_i) {
 379                 if (next_gen_i >= 0) {
 380                         rprintf(FINFO,
 381                                 "(No batched update for%s \"%s\")\n",
 382                                 phase ? " resend of" : "",
 383                                 safe_fname(f_name(the_file_list->files[next_gen_i])));
 384                 }
 385                 next_gen_i = read_int(batch_gen_fd);
 386                 if (next_gen_i == -1)
 387                         next_gen_i = the_file_list->count;
 388         }
 389         return next_gen_i;
 390 }
 391
 392
 393 /**
 394  * main routine for receiver process.
 395  *
 396  * Receiver process runs on the same host as the generator process. */
 397 int recv_files(int f_in, struct file_list *flist, char *local_name)
 398 {
 399         int next_gen_i = -1;
 400         int fd1,fd2;
 401         STRUCT_STAT st;
 402         int iflags, xlen;
 403         char *fname, fbuf[MAXPATHLEN];
 404         char xname[MAXPATHLEN];
 405         char fnametmp[MAXPATHLEN];
 406         char *fnamecmp, *partialptr, numbuf[4];
 407         char fnamecmpbuf[MAXPATHLEN];
 408         uchar fnamecmp_type;
 409         struct file_struct *file;
 410         struct stats initial_stats;
 411         int save_make_backups = make_backups;
 412         int itemizing = am_daemon ? daemon_log_format_has_i
 413                       : !am_server && log_format_has_i;
 414         int max_phase = protocol_version >= 29 ? 2 : 1;
 415         int i, recv_ok;
 416
 417         if (verbose > 2)
 418                 rprintf(FINFO,"recv_files(%d) starting\n",flist->count);
 419
 420         if (flist->hlink_pool) {
 421                 pool_destroy(flist->hlink_pool);
 422                 flist->hlink_pool = NULL;
 423         }
 424
 425         if (delay_updates)
 426                 init_delayed_bits(flist->count);
 427
 428         while (1) {
 429                 cleanup_disable();
 430
 431                 i = read_int(f_in);
 432                 if (i == -1) {
 433                         if (read_batch) {
 434                                 get_next_gen_i(batch_gen_fd, next_gen_i,
 435                                                flist->count);
 436                                 next_gen_i = -1;
 437                         }
 438                         if (++phase > max_phase)
 439                                 break;
 440                         csum_length = SUM_LENGTH;
 441                         if (verbose > 2)
 442                                 rprintf(FINFO, "recv_files phase=%d\n", phase);
 443                         if (phase == 2 && delay_updates)
 444                                 handle_delayed_updates(flist, local_name);
 445                         send_msg(MSG_DONE, "", 0);
 446                         if (keep_partial && !partial_dir)
 447                                 make_backups = 0; /* prevents double backup */
 448                         if (append_mode) {
 449                                 append_mode = 0;
 450                                 sparse_files = 0;
 451                         }
 452                         continue;
 453                 }
 454
 455                 iflags = read_item_attrs(f_in, -1, i, &fnamecmp_type,
 456                                          xname, &xlen);
 457                 if (iflags == ITEM_IS_NEW) /* no-op packet */
 458                         continue;
 459
 460                 file = flist->files[i];
 461                 fname = local_name ? local_name : f_name_to(file, fbuf);
 462
 463                 if (verbose > 2)
 464                         rprintf(FINFO, "recv_files(%s)\n", safe_fname(fname));
 465
 466                 if (!(iflags & ITEM_TRANSFER)) {
 467                         maybe_log_item(file, iflags, itemizing, xname);
 468                         continue;
 469                 }
 470                 if (phase == 2) {
 471                         rprintf(FERROR,
 472                                 "got transfer request in phase 2 [%s]\n",
 473                                 who_am_i());
 474                         exit_cleanup(RERR_PROTOCOL);
 475                 }
 476
 477                 stats.current_file_index = i;
 478                 stats.num_transferred_files++;
 479                 stats.total_transferred_size += file->length;
 480                 cleanup_got_literal = 0;
 481
 482                 if (server_filter_list.head
 483                     && check_filter(&server_filter_list, fname, 0) < 0) {
 484                         rprintf(FERROR, "attempt to hack rsync failed.\n");
 485                         exit_cleanup(RERR_PROTOCOL);
 486                 }
 487
 488                 if (!do_xfers) { /* log the transfer */
 489                         if (!am_server && log_format)
 490                                 log_item(file, &stats, iflags, NULL);
 491                         if (read_batch)
 492                                 discard_receive_data(f_in, file->length);
 493                         continue;
 494                 }
 495                 if (write_batch < 0) {
 496                         log_item(file, &stats, iflags, NULL);
 497                         if (!am_server)
 498                                 discard_receive_data(f_in, file->length);
 499                         continue;
 500                 }
 501
 502                 if (read_batch) {
 503                         next_gen_i = get_next_gen_i(batch_gen_fd, next_gen_i, i);
 504                         if (i < next_gen_i) {
 505                                 rprintf(FINFO, "(Skipping batched update for \"%s\")\n",
 506                                         safe_fname(fname));
 507                                 discard_receive_data(f_in, file->length);
 508                                 continue;
 509                         }
 510                         next_gen_i = -1;
 511                 }
 512
 513                 partialptr = partial_dir ? partial_dir_fname(fname) : fname;
 514
 515                 if (protocol_version >= 29) {
 516                         switch (fnamecmp_type) {
 517                         case FNAMECMP_FNAME:
 518                                 fnamecmp = fname;
 519                                 break;
 520                         case FNAMECMP_PARTIAL_DIR:
 521                                 fnamecmp = partialptr;
 522                                 break;
 523                         case FNAMECMP_BACKUP:
 524                                 fnamecmp = get_backup_name(fname);
 525                                 break;
 526                         case FNAMECMP_FUZZY:
 527                                 if (file->dirname) {
 528                                         pathjoin(fnamecmpbuf, MAXPATHLEN,
 529                                                  file->dirname, xname);
 530                                         fnamecmp = fnamecmpbuf;
 531                                 } else
 532                                         fnamecmp = xname;
 533                                 break;
 534                         default:
 535                                 if (fnamecmp_type >= basis_dir_cnt) {
 536                                         rprintf(FERROR,
 537                                                 "invalid basis_dir index: %d.\n",
 538                                                 fnamecmp_type);
 539                                         exit_cleanup(RERR_PROTOCOL);
 540                                 }
 541                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 542                                          basis_dir[fnamecmp_type], fname);
 543                                 fnamecmp = fnamecmpbuf;
 544                                 break;
 545                         }
 546                         if (!fnamecmp || (server_filter_list.head
 547                           && check_filter(&server_filter_list, fname, 0) < 0))
 548                                 fnamecmp = fname;
 549                 } else {
 550                         /* Reminder: --inplace && --partial-dir are never
 551                          * enabled at the same time. */
 552                         if (inplace && make_backups) {
 553                                 if (!(fnamecmp = get_backup_name(fname)))
 554                                         fnamecmp = fname;
 555                         } else if (partial_dir && partialptr)
 556                                 fnamecmp = partialptr;
 557                         else
 558                                 fnamecmp = fname;
 559                 }
 560
 561                 initial_stats = stats;
 562
 563                 /* open the file */
 564                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 565
 566                 if (fd1 == -1 && protocol_version < 29) {
 567                         if (fnamecmp != fname) {
 568                                 fnamecmp = fname;
 569                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 570                         }
 571
 572                         if (fd1 == -1 && basis_dir[0]) {
 573                                 /* pre-29 allowed only one alternate basis */
 574                                 pathjoin(fnamecmpbuf, sizeof fnamecmpbuf,
 575                                          basis_dir[0], fname);
 576                                 fnamecmp = fnamecmpbuf;
 577                                 fd1 = do_open(fnamecmp, O_RDONLY, 0);
 578                         }
 579                 }
 580
 581                 if (fd1 != -1 && do_fstat(fd1,&st) != 0) {
 582                         rsyserr(FERROR, errno, "fstat %s failed",
 583                                 full_fname(fnamecmp));
 584                         discard_receive_data(f_in, file->length);
 585                         close(fd1);
 586                         continue;
 587                 }
 588
 589                 if (fd1 != -1 && S_ISDIR(st.st_mode) && fnamecmp == fname) {
 590                         /* this special handling for directories
 591                          * wouldn't be necessary if robust_rename()
 592                          * and the underlying robust_unlink could cope
 593                          * with directories
 594                          */
 595                         rprintf(FERROR,"recv_files: %s is a directory\n",
 596                                 full_fname(fnamecmp));
 597                         discard_receive_data(f_in, file->length);
 598                         close(fd1);
 599                         continue;
 600                 }
 601
 602                 if (fd1 != -1 && !S_ISREG(st.st_mode)) {
 603                         close(fd1);
 604                         fd1 = -1;
 605                 }
 606
 607                 if (fd1 != -1 && !preserve_perms) {
 608                         /* if the file exists already and we aren't preserving
 609                          * permissions then act as though the remote end sent
 610                          * us the file permissions we already have */
 611                         file->mode = st.st_mode;
 612                 }
 613
 614                 /* We now check to see if we are writing file "inplace" */
 615                 if (inplace)  {
 616                         fd2 = do_open(fname, O_WRONLY|O_CREAT, 0600);
 617                         if (fd2 == -1) {
 618                                 rsyserr(FERROR, errno, "open %s failed",
 619                                         full_fname(fname));
 620                                 discard_receive_data(f_in, file->length);
 621                                 if (fd1 != -1)
 622                                         close(fd1);
 623                                 continue;
 624                         }
 625                 } else {
 626                         if (!get_tmpname(fnametmp,fname)) {
 627                                 discard_receive_data(f_in, file->length);
 628                                 if (fd1 != -1)
 629                                         close(fd1);
 630                                 continue;
 631                         }
 632
 633                         /* we initially set the perms without the
 634                          * setuid/setgid bits to ensure that there is no race
 635                          * condition. They are then correctly updated after
 636                          * the lchown. Thanks to snabb@epipe.fi for pointing
 637                          * this out.  We also set it initially without group
 638                          * access because of a similar race condition. */
 639                         fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 640
 641                         /* in most cases parent directories will already exist
 642                          * because their information should have been previously
 643                          * transferred, but that may not be the case with -R */
 644                         if (fd2 == -1 && relative_paths && errno == ENOENT
 645                             && create_directory_path(fnametmp, orig_umask) == 0) {
 646                                 /* Get back to name with XXXXXX in it. */
 647                                 get_tmpname(fnametmp, fname);
 648                                 fd2 = do_mkstemp(fnametmp, file->mode & INITACCESSPERMS);
 649                         }
 650                         if (fd2 == -1) {
 651                                 rsyserr(FERROR, errno, "mkstemp %s failed",
 652                                         full_fname(fnametmp));
 653                                 discard_receive_data(f_in, file->length);
 654                                 if (fd1 != -1)
 655                                         close(fd1);
 656                                 continue;
 657                         }
 658
 659                         if (partialptr)
 660                                 cleanup_set(fnametmp, partialptr, file, fd1, fd2);
 661                 }
 662
 663                 /* log the transfer */
 664                 if (log_before_transfer)
 665                         log_item(file, &initial_stats, iflags, NULL);
 666                 else if (!am_server && verbose && do_progress)
 667                         rprintf(FINFO, "%s\n", safe_fname(fname));
 668
 669                 /* recv file data */
 670                 recv_ok = receive_data(f_in, fnamecmp, fd1, st.st_size,
 671                                        fname, fd2, file->length);
 672
 673                 if (!log_before_transfer)
 674                         log_item(file, &initial_stats, iflags, NULL);
 675
 676                 if (fd1 != -1)
 677                         close(fd1);
 678                 if (close(fd2) < 0) {
 679                         rsyserr(FERROR, errno, "close failed on %s",
 680                                 full_fname(fnametmp));
 681                         exit_cleanup(RERR_FILEIO);
 682                 }
 683
 684                 if ((recv_ok && (!delay_updates || !partialptr)) || inplace) {
 685                         finish_transfer(fname, fnametmp, file, recv_ok, 1);
 686                         if (partialptr != fname && fnamecmp == partialptr) {
 687                                 do_unlink(partialptr);
 688                                 handle_partial_dir(partialptr, PDIR_DELETE);
 689                         }
 690                 } else if (keep_partial && partialptr
 691                     && handle_partial_dir(partialptr, PDIR_CREATE)) {
 692                         finish_transfer(partialptr, fnametmp, file, recv_ok,
 693                                         !partial_dir);
 694                         if (delay_updates && recv_ok) {
 695                                 set_delayed_bit(i);
 696                                 recv_ok = -1;
 697                         }
 698                 } else {
 699                         partialptr = NULL;
 700                         do_unlink(fnametmp);
 701                 }
 702
 703                 cleanup_disable();
 704
 705                 if (recv_ok > 0) {
 706                         if (remove_sent_files
 707                             || (preserve_hard_links && file->link_u.links)) {
 708                                 SIVAL(numbuf, 0, i);
 709                                 send_msg(MSG_SUCCESS, numbuf, 4);
 710                         }
 711                 } else if (!recv_ok) {
 712                         int msgtype = phase || read_batch ? FERROR : FINFO;
 713                         if (msgtype == FERROR || verbose) {
 714                                 char *errstr, *redostr, *keptstr;
 715                                 if (!(keep_partial && partialptr) && !inplace)
 716                                         keptstr = "discarded";
 717                                 else if (partial_dir)
 718                                         keptstr = "put into partial-dir";
 719                                 else
 720                                         keptstr = "retained";
 721                                 if (msgtype == FERROR) {
 722                                         errstr = "ERROR";
 723                                         redostr = "";
 724                                 } else {
 725                                         errstr = "WARNING";
 726                                         redostr = " (will try again)";
 727                                 }
 728                                 rprintf(msgtype,
 729                                         "%s: %s failed verification -- update %s%s.\n",
 730                                         errstr, safe_fname(fname),
 731                                         keptstr, redostr);
 732                         }
 733                         if (!phase) {
 734                                 SIVAL(numbuf, 0, i);
 735                                 send_msg(MSG_REDO, numbuf, 4);
 736                         }
 737                 }
 738         }
 739         make_backups = save_make_backups;
 740
 741         if (phase == 2 && delay_updates) /* for protocol_version < 29 */
 742                 handle_delayed_updates(flist, local_name);
 743
 744         if (verbose > 2)
 745                 rprintf(FINFO,"recv_files finished\n");
 746
 747         return 0;
 748 }