options.c

   1 /*
   2    Copyright (C) Andrew Tridgell 1998
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17 */
  18
  19 /* options parsing code */
  20
  21 #include "rsync.h"
  22
  23
  24 int make_backups = 0;
  25 int whole_file = 0;
  26 int copy_links = 0;
  27 int preserve_links = 0;
  28 int preserve_hard_links = 0;
  29 int preserve_perms = 0;
  30 int preserve_devices = 0;
  31 int preserve_uid = 0;
  32 int preserve_gid = 0;
  33 int preserve_times = 0;
  34 int update_only = 0;
  35 int cvs_exclude = 0;
  36 int dry_run=0;
  37 int local_server=0;
  38 int ignore_times=0;
  39 int delete_mode=0;
  40 int delete_excluded=0;
  41 int one_file_system=0;
  42 int remote_version=0;
  43 int sparse_files=0;
  44 int do_compression=0;
  45 int am_root=0;
  46 int orig_umask=0;
  47 int relative_paths=0;
  48 int numeric_ids = 0;
  49 int force_delete = 0;
  50 int io_timeout = 0;
  51 int io_error = 0;
  52 int read_only = 0;
  53 int module_id = -1;
  54 int am_server = 0;
  55 int am_sender=0;
  56 int recurse = 0;
  57 int am_daemon=0;
  58 int do_stats=0;
  59 int do_progress=0;
  60 int keep_partial=0;
  61 int safe_symlinks=0;
  62 int copy_unsafe_links=0;
  63 int block_size=BLOCK_SIZE;
  64 int size_only=0;
  65 int delete_after=0;
  66 int only_existing=0;
  67 int max_delete=0;
  68 int ignore_errors=0;
  69
  70 char *backup_suffix = BACKUP_SUFFIX;
  71 char *tmpdir = NULL;
  72 char *compare_dest = NULL;
  73 char *config_file = RSYNCD_CONF;
  74 char *shell_cmd = NULL;
  75 char *log_format = NULL;
  76 char *password_file = NULL;
  77 char *rsync_path = RSYNC_NAME;
  78 char *backup_dir = NULL;
  79 int rsync_port = RSYNC_PORT;
  80
  81 int verbose = 0;
  82 int quiet = 0;
  83 int always_checksum = 0;
  84 int list_only = 0;
  85
  86 struct in_addr socket_address = {INADDR_ANY};
  87
  88 void usage(enum logcode F)
  89 {
  90   rprintf(F,"rsync version %s Copyright Andrew Tridgell and Paul Mackerras\n\n",
  91           VERSION);
  92
  93   rprintf(F,"rsync is a file transfer program capable of efficient remote update\nvia a fast differencing algorithm.\n\n");
  94
  95   rprintf(F,"Usage: rsync [OPTION]... SRC [SRC]... [USER@]HOST:DEST\n");
  96   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST:SRC DEST\n");
  97   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... DEST\n");
  98   rprintf(F,"  or   rsync [OPTION]... [USER@]HOST::SRC [DEST]\n");
  99   rprintf(F,"  or   rsync [OPTION]... SRC [SRC]... [USER@]HOST::DEST\n");
 100   rprintf(F,"  or   rsync [OPTION]... rsync://[USER@]HOST[:PORT]/SRC [DEST]\n");
 101   rprintf(F,"SRC on single-colon remote HOST will be expanded by remote shell\n");
 102   rprintf(F,"SRC on server remote HOST may contain shell wildcards or multiple\n");
 103   rprintf(F,"  sources separated by space as long as they have same top-level\n");
 104   rprintf(F,"\nOptions\n");
 105   rprintf(F," -v, --verbose               increase verbosity\n");
 106   rprintf(F," -q, --quiet                 decrease verbosity\n");
 107   rprintf(F," -c, --checksum              always checksum\n");
 108   rprintf(F," -a, --archive               archive mode\n");
 109   rprintf(F," -r, --recursive             recurse into directories\n");
 110   rprintf(F," -R, --relative              use relative path names\n");
 111   rprintf(F," -b, --backup                make backups (default %s suffix)\n",BACKUP_SUFFIX);
 112   rprintf(F,"     --backup-dir            make backups into this directory\n");
 113   rprintf(F,"     --suffix=SUFFIX         override backup suffix\n");
 114   rprintf(F," -u, --update                update only (don't overwrite newer files)\n");
 115   rprintf(F," -l, --links                 preserve soft links\n");
 116   rprintf(F," -L, --copy-links            treat soft links like regular files\n");
 117   rprintf(F,"     --copy-unsafe-links     copy links outside the source tree\n");
 118   rprintf(F,"     --safe-links            ignore links outside the destination tree\n");
 119   rprintf(F," -H, --hard-links            preserve hard links\n");
 120   rprintf(F," -p, --perms                 preserve permissions\n");
 121   rprintf(F," -o, --owner                 preserve owner (root only)\n");
 122   rprintf(F," -g, --group                 preserve group\n");
 123   rprintf(F," -D, --devices               preserve devices (root only)\n");
 124   rprintf(F," -t, --times                 preserve times\n");
 125   rprintf(F," -S, --sparse                handle sparse files efficiently\n");
 126   rprintf(F," -n, --dry-run               show what would have been transferred\n");
 127   rprintf(F," -W, --whole-file            copy whole files, no incremental checks\n");
 128   rprintf(F," -x, --one-file-system       don't cross filesystem boundaries\n");
 129   rprintf(F," -B, --block-size=SIZE       checksum blocking size (default %d)\n",BLOCK_SIZE);
 130   rprintf(F," -e, --rsh=COMMAND           specify rsh replacement\n");
 131   rprintf(F,"     --rsync-path=PATH       specify path to rsync on the remote machine\n");
 132   rprintf(F," -C, --cvs-exclude           auto ignore files in the same way CVS does\n");
 133   rprintf(F,"     --existing              only update files that already exist\n");
 134   rprintf(F,"     --delete                delete files that don't exist on the sending side\n");
 135   rprintf(F,"     --delete-excluded       also delete excluded files on the receiving side\n");
 136   rprintf(F,"     --delete-after          delete after transferring, not before\n");
 137   rprintf(F,"     --ignore-errors         delete even if there are IO errors\n");
 138   rprintf(F,"     --max-delete=NUM        don't delete more than NUM files\n");
 139   rprintf(F,"     --partial               keep partially transferred files\n");
 140   rprintf(F,"     --force                 force deletion of directories even if not empty\n");
 141   rprintf(F,"     --numeric-ids           don't map uid/gid values by user/group name\n");
 142   rprintf(F,"     --timeout=TIME          set IO timeout in seconds\n");
 143   rprintf(F," -I, --ignore-times          don't exclude files that match length and time\n");
 144   rprintf(F,"     --size-only             only use file size when determining if a file should be transferred\n");
 145   rprintf(F," -T  --temp-dir=DIR          create temporary files in directory DIR\n");
 146   rprintf(F,"     --compare-dest=DIR      also compare destination files relative to DIR\n");
 147   rprintf(F," -P                          equivalent to --partial --progress\n");
 148   rprintf(F," -z, --compress              compress file data\n");
 149   rprintf(F,"     --exclude=PATTERN       exclude files matching PATTERN\n");
 150   rprintf(F,"     --exclude-from=FILE     exclude patterns listed in FILE\n");
 151   rprintf(F,"     --include=PATTERN       don't exclude files matching PATTERN\n");
 152   rprintf(F,"     --include-from=FILE     don't exclude patterns listed in FILE\n");
 153   rprintf(F,"     --version               print version number\n");
 154   rprintf(F,"     --daemon                run as a rsync daemon\n");
 155   rprintf(F,"     --address               bind to the specified address\n");
 156   rprintf(F,"     --config=FILE           specify alternate rsyncd.conf file\n");
 157   rprintf(F,"     --port=PORT             specify alternate rsyncd port number\n");
 158   rprintf(F,"     --stats                 give some file transfer stats\n");
 159   rprintf(F,"     --progress              show progress during transfer\n");
 160   rprintf(F,"     --log-format=FORMAT     log file transfers using specified format\n");
 161   rprintf(F,"     --password-file=FILE    get password from FILE\n");
 162   rprintf(F," -h, --help                  show this help screen\n");
 163
 164   rprintf(F,"\n");
 165
 166   rprintf(F,"\nPlease see the rsync(1) and rsyncd.conf(5) man pages for full documentation\n");
 167   rprintf(F,"See http://rsync.samba.org/ for updates and bug reports\n");
 168 }
 169
 170 enum {OPT_VERSION, OPT_SUFFIX, OPT_SENDER, OPT_SERVER, OPT_EXCLUDE,
 171       OPT_EXCLUDE_FROM, OPT_DELETE, OPT_DELETE_EXCLUDED, OPT_NUMERIC_IDS,
 172       OPT_RSYNC_PATH, OPT_FORCE, OPT_TIMEOUT, OPT_DAEMON, OPT_CONFIG, OPT_PORT,
 173       OPT_INCLUDE, OPT_INCLUDE_FROM, OPT_STATS, OPT_PARTIAL, OPT_PROGRESS,
 174       OPT_COPY_UNSAFE_LINKS, OPT_SAFE_LINKS, OPT_COMPARE_DEST,
 175       OPT_LOG_FORMAT, OPT_PASSWORD_FILE, OPT_SIZE_ONLY, OPT_ADDRESS,
 176       OPT_DELETE_AFTER, OPT_EXISTING, OPT_MAX_DELETE, OPT_BACKUP_DIR,
 177       OPT_IGNORE_ERRORS};
 178
 179 static char *short_options = "oblLWHpguDCtcahvqrRIxnSe:B:T:zP";
 180
 181 static struct option long_options[] = {
 182   {"version",     0,     0,    OPT_VERSION},
 183   {"server",      0,     0,    OPT_SERVER},
 184   {"sender",      0,     0,    OPT_SENDER},
 185   {"existing",    0,     0,    OPT_EXISTING},
 186   {"delete",      0,     0,    OPT_DELETE},
 187   {"delete-excluded", 0, 0,    OPT_DELETE_EXCLUDED},
 188   {"force",       0,     0,    OPT_FORCE},
 189   {"numeric-ids", 0,     0,    OPT_NUMERIC_IDS},
 190   {"exclude",     1,     0,    OPT_EXCLUDE},
 191   {"exclude-from",1,     0,    OPT_EXCLUDE_FROM},
 192   {"include",     1,     0,    OPT_INCLUDE},
 193   {"include-from",1,     0,    OPT_INCLUDE_FROM},
 194   {"rsync-path",  1,     0,    OPT_RSYNC_PATH},
 195   {"password-file", 1,  0,     OPT_PASSWORD_FILE},
 196   {"one-file-system",0,  0,    'x'},
 197   {"ignore-times",0,     0,    'I'},
 198   {"size-only",   0,     0,    OPT_SIZE_ONLY},
 199   {"help",        0,     0,    'h'},
 200   {"dry-run",     0,     0,    'n'},
 201   {"sparse",      0,     0,    'S'},
 202   {"cvs-exclude", 0,     0,    'C'},
 203   {"archive",     0,     0,    'a'},
 204   {"checksum",    0,     0,    'c'},
 205   {"backup",      0,     0,    'b'},
 206   {"update",      0,     0,    'u'},
 207   {"verbose",     0,     0,    'v'},
 208   {"quiet",       0,     0,    'q'},
 209   {"recursive",   0,     0,    'r'},
 210   {"relative",    0,     0,    'R'},
 211   {"devices",     0,     0,    'D'},
 212   {"perms",       0,     0,    'p'},
 213   {"links",       0,     0,    'l'},
 214   {"copy-links",  0,     0,    'L'},
 215   {"copy-unsafe-links", 0, 0,  OPT_COPY_UNSAFE_LINKS},
 216   {"safe-links",  0,     0,    OPT_SAFE_LINKS},
 217   {"whole-file",  0,     0,    'W'},
 218   {"hard-links",  0,     0,    'H'},
 219   {"owner",       0,     0,    'o'},
 220   {"group",       0,     0,    'g'},
 221   {"times",       0,     0,    't'},
 222   {"rsh",         1,     0,    'e'},
 223   {"suffix",      1,     0,    OPT_SUFFIX},
 224   {"block-size",  1,     0,    'B'},
 225   {"timeout",     1,     0,    OPT_TIMEOUT},
 226   {"temp-dir",    1,     0,    'T'},
 227   {"compare-dest", 1,    0,    OPT_COMPARE_DEST},
 228   {"compress",    0,     0,    'z'},
 229   {"daemon",      0,     0,    OPT_DAEMON},
 230   {"stats",       0,     0,    OPT_STATS},
 231   {"progress",    0,     0,    OPT_PROGRESS},
 232   {"partial",     0,     0,    OPT_PARTIAL},
 233   {"delete-after",0,     0,    OPT_DELETE_AFTER},
 234   {"ignore-errors",0,     0,   OPT_IGNORE_ERRORS},
 235   {"config",      1,     0,    OPT_CONFIG},
 236   {"port",        1,     0,    OPT_PORT},
 237   {"log-format",  1,     0,    OPT_LOG_FORMAT},
 238   {"address",     1,     0,    OPT_ADDRESS},
 239   {"max-delete",  1,     0,    OPT_MAX_DELETE},
 240   {"backup-dir",  1,     0,    OPT_BACKUP_DIR},
 241   {0,0,0,0}};
 242
 243
 244 static char err_buf[100];
 245
 246 void option_error(void)
 247 {
 248         if (err_buf[0]) {
 249                 rprintf(FLOG,"%s", err_buf);
 250                 rprintf(FERROR,"%s", err_buf);
 251         } else {
 252                 rprintf(FLOG,"Error parsing options - unsupported option?\n");
 253                 rprintf(FERROR,"Error parsing options - unsupported option?\n");
 254         }
 255         exit_cleanup(RERR_UNSUPPORTED);
 256 }
 257
 258 /* check to see if we should refuse this option */
 259 static int check_refuse_options(char *ref, int opt)
 260 {
 261         int i, len;
 262         char *p;
 263         const char *name;
 264
 265         for (i=0; long_options[i].name; i++) {
 266                 if (long_options[i].val == opt) break;
 267         }
 268
 269         if (!long_options[i].name) return 0;
 270
 271         name = long_options[i].name;
 272         len = strlen(name);
 273
 274         while ((p = strstr(ref,name))) {
 275                 if ((p==ref || p[-1]==' ') &&
 276                     (p[len] == ' ' || p[len] == 0)) {
 277                         slprintf(err_buf,sizeof(err_buf),
 278                                  "The '%s' option is not supported by this server\n", name);
 279                         return 1;
 280                 }
 281                 ref += len;
 282         }
 283         return 0;
 284 }
 285
 286
 287 int parse_arguments(int argc, char *argv[], int frommain)
 288 {
 289         int opt;
 290         int option_index;
 291         char *ref = lp_refuse_options(module_id);
 292
 293         while ((opt = getopt_long(argc, argv,
 294                                   short_options, long_options, &option_index))
 295                != -1) {
 296
 297                 if (ref) {
 298                         if (check_refuse_options(ref, opt)) return 0;
 299                 }
 300
 301                 switch (opt) {
 302                 case OPT_VERSION:
 303                         rprintf(FINFO,"rsync version %s  protocol version %d\n\n",
 304                                 VERSION,PROTOCOL_VERSION);
 305                         rprintf(FINFO,"Written by Andrew Tridgell and Paul Mackerras\n");
 306                         exit_cleanup(0);
 307
 308                 case OPT_SUFFIX:
 309                         backup_suffix = optarg;
 310                         break;
 311
 312                 case OPT_RSYNC_PATH:
 313                         rsync_path = optarg;
 314                         break;
 315
 316                 case OPT_PASSWORD_FILE:
 317                         password_file =optarg;
 318                         break;
 319
 320                 case 'I':
 321                         ignore_times = 1;
 322                         break;
 323
 324                 case OPT_SIZE_ONLY:
 325                         size_only = 1;
 326                         break;
 327
 328                 case 'x':
 329                         one_file_system=1;
 330                         break;
 331
 332                 case OPT_DELETE:
 333                         delete_mode = 1;
 334                         break;
 335
 336                 case OPT_EXISTING:
 337                         only_existing = 1;
 338                         break;
 339
 340                 case OPT_DELETE_AFTER:
 341                         delete_after = 1;
 342                         break;
 343
 344                 case OPT_DELETE_EXCLUDED:
 345                         delete_excluded = 1;
 346                         delete_mode = 1;
 347                         break;
 348
 349                 case OPT_FORCE:
 350                         force_delete = 1;
 351                         break;
 352
 353                 case OPT_NUMERIC_IDS:
 354                         numeric_ids = 1;
 355                         break;
 356
 357                 case OPT_EXCLUDE:
 358                         add_exclude(optarg, 0);
 359                         break;
 360
 361                 case OPT_INCLUDE:
 362                         add_exclude(optarg, 1);
 363                         break;
 364
 365                 case OPT_EXCLUDE_FROM:
 366                         add_exclude_file(optarg,1, 0);
 367                         break;
 368
 369                 case OPT_INCLUDE_FROM:
 370                         add_exclude_file(optarg,1, 1);
 371                         break;
 372
 373                 case OPT_COPY_UNSAFE_LINKS:
 374                         copy_unsafe_links=1;
 375                         break;
 376
 377                 case OPT_SAFE_LINKS:
 378                         safe_symlinks=1;
 379                         break;
 380
 381                 case 'h':
 382                         usage(FINFO);
 383                         exit_cleanup(0);
 384
 385                 case 'b':
 386                         make_backups=1;
 387                         break;
 388
 389                 case 'n':
 390                         dry_run=1;
 391                         break;
 392
 393                 case 'S':
 394                         sparse_files=1;
 395                         break;
 396
 397                 case 'C':
 398                         cvs_exclude=1;
 399                         break;
 400
 401                 case 'u':
 402                         update_only=1;
 403                         break;
 404
 405                 case 'l':
 406                         preserve_links=1;
 407                         break;
 408
 409                 case 'L':
 410                         copy_links=1;
 411                         break;
 412
 413                 case 'W':
 414                         whole_file=1;
 415                         break;
 416
 417                 case 'H':
 418 #if SUPPORT_HARD_LINKS
 419                         preserve_hard_links=1;
 420 #else
 421                         slprintf(err_buf,sizeof(err_buf),"hard links are not supported on this server\n");
 422                         rprintf(FERROR,"ERROR: hard links not supported on this platform\n");
 423                         return 0;
 424 #endif
 425                         break;
 426
 427                 case 'p':
 428                         preserve_perms=1;
 429                         break;
 430
 431                 case 'o':
 432                         preserve_uid=1;
 433                         break;
 434
 435                 case 'g':
 436                         preserve_gid=1;
 437                         break;
 438
 439                 case 'D':
 440                         preserve_devices=1;
 441                         break;
 442
 443                 case 't':
 444                         preserve_times=1;
 445                         break;
 446
 447                 case 'c':
 448                         always_checksum=1;
 449                         break;
 450
 451                 case 'v':
 452                         verbose++;
 453                         break;
 454
 455                 case 'q':
 456                         if (frommain) quiet++;
 457                         break;
 458
 459                 case 'a':
 460                         recurse=1;
 461 #if SUPPORT_LINKS
 462                         preserve_links=1;
 463 #endif
 464                         preserve_perms=1;
 465                         preserve_times=1;
 466                         preserve_gid=1;
 467                         preserve_uid=1;
 468                         preserve_devices=1;
 469                         break;
 470
 471                 case OPT_SERVER:
 472                         am_server = 1;
 473                         break;
 474
 475                 case OPT_SENDER:
 476                         if (!am_server) {
 477                                 usage(FERROR);
 478                                 exit_cleanup(RERR_SYNTAX);
 479                         }
 480                         am_sender = 1;
 481                         break;
 482
 483                 case 'r':
 484                         recurse = 1;
 485                         break;
 486
 487                 case 'R':
 488                         relative_paths = 1;
 489                         break;
 490
 491                 case 'e':
 492                         shell_cmd = optarg;
 493                         break;
 494
 495                 case 'B':
 496                         block_size = atoi(optarg);
 497                         break;
 498
 499                 case OPT_MAX_DELETE:
 500                         max_delete = atoi(optarg);
 501                         break;
 502
 503                 case OPT_TIMEOUT:
 504                         io_timeout = atoi(optarg);
 505                         break;
 506
 507                 case 'T':
 508                         tmpdir = optarg;
 509                         break;
 510
 511                 case OPT_COMPARE_DEST:
 512                         compare_dest = optarg;
 513                         break;
 514
 515                 case 'z':
 516                         do_compression = 1;
 517                         break;
 518
 519                 case OPT_DAEMON:
 520                         am_daemon = 1;
 521                         break;
 522
 523                 case OPT_STATS:
 524                         do_stats = 1;
 525                         break;
 526
 527                 case OPT_PROGRESS:
 528                         do_progress = 1;
 529                         break;
 530
 531                 case OPT_PARTIAL:
 532                         keep_partial = 1;
 533                         break;
 534
 535                 case OPT_IGNORE_ERRORS:
 536                         ignore_errors = 1;
 537                         break;
 538
 539                 case 'P':
 540                         do_progress = 1;
 541                         keep_partial = 1;
 542                         break;
 543
 544                 case OPT_CONFIG:
 545                         config_file = optarg;
 546                         break;
 547
 548                 case OPT_PORT:
 549                         rsync_port = atoi(optarg);
 550                         break;
 551
 552                 case OPT_LOG_FORMAT:
 553                         log_format = optarg;
 554                         break;
 555
 556                 case OPT_ADDRESS:
 557                         {
 558                                 struct in_addr *ia;
 559                                 if ((ia = ip_address(optarg))) {
 560                                         socket_address = *ia;
 561                                 }
 562                         }
 563                         break;
 564
 565                 case OPT_BACKUP_DIR:
 566                         backup_dir = optarg;
 567                         break;
 568
 569                 default:
 570                         slprintf(err_buf,sizeof(err_buf),"unrecognised option\n");
 571                         return 0;
 572                 }
 573         }
 574         return 1;
 575 }
 576
 577
 578 /* need to pass all the valid options from the client to the server */
 579
 580 void server_options(char **args,int *argc)
 581 {
 582         int ac = *argc;
 583         static char argstr[50];
 584         static char bsize[30];
 585         static char iotime[30];
 586         static char mdelete[30];
 587         int i, x;
 588
 589         args[ac++] = "--server";
 590
 591         if (!am_sender)
 592                 args[ac++] = "--sender";
 593
 594         x = 1;
 595         argstr[0] = '-';
 596         for (i=0;i<verbose;i++)
 597                 argstr[x++] = 'v';
 598         /* the -q option is intentionally left out */
 599         if (make_backups)
 600                 argstr[x++] = 'b';
 601         if (update_only)
 602                 argstr[x++] = 'u';
 603         if (dry_run)
 604                 argstr[x++] = 'n';
 605         if (preserve_links)
 606                 argstr[x++] = 'l';
 607         if (copy_links)
 608                 argstr[x++] = 'L';
 609         if (whole_file)
 610                 argstr[x++] = 'W';
 611         if (preserve_hard_links)
 612                 argstr[x++] = 'H';
 613         if (preserve_uid)
 614                 argstr[x++] = 'o';
 615         if (preserve_gid)
 616                 argstr[x++] = 'g';
 617         if (preserve_devices)
 618                 argstr[x++] = 'D';
 619         if (preserve_times)
 620                 argstr[x++] = 't';
 621         if (preserve_perms)
 622                 argstr[x++] = 'p';
 623         if (recurse)
 624                 argstr[x++] = 'r';
 625         if (always_checksum)
 626                 argstr[x++] = 'c';
 627         if (cvs_exclude)
 628                 argstr[x++] = 'C';
 629         if (ignore_times)
 630                 argstr[x++] = 'I';
 631         if (relative_paths)
 632                 argstr[x++] = 'R';
 633         if (one_file_system)
 634                 argstr[x++] = 'x';
 635         if (sparse_files)
 636                 argstr[x++] = 'S';
 637         if (do_compression)
 638                 argstr[x++] = 'z';
 639         argstr[x] = 0;
 640
 641         if (x != 1) args[ac++] = argstr;
 642
 643         if (block_size != BLOCK_SIZE) {
 644                 slprintf(bsize,sizeof(bsize),"-B%d",block_size);
 645                 args[ac++] = bsize;
 646         }
 647
 648         if (max_delete && am_sender) {
 649                 slprintf(mdelete,sizeof(mdelete),"--max-delete=%d",max_delete);
 650                 args[ac++] = mdelete;
 651         }
 652
 653         if (io_timeout) {
 654                 slprintf(iotime,sizeof(iotime),"--timeout=%d",io_timeout);
 655                 args[ac++] = iotime;
 656         }
 657
 658         if (strcmp(backup_suffix, BACKUP_SUFFIX)) {
 659                 args[ac++] = "--suffix";
 660                 args[ac++] = backup_suffix;
 661         }
 662
 663         if (delete_mode && !delete_excluded)
 664                 args[ac++] = "--delete";
 665
 666         if (delete_excluded)
 667                 args[ac++] = "--delete-excluded";
 668
 669         if (size_only)
 670                 args[ac++] = "--size-only";
 671
 672         if (keep_partial)
 673                 args[ac++] = "--partial";
 674
 675         if (force_delete)
 676                 args[ac++] = "--force";
 677
 678         if (delete_after)
 679                 args[ac++] = "--delete-after";
 680
 681         if (ignore_errors)
 682                 args[ac++] = "--ignore-errors";
 683
 684         if (copy_unsafe_links)
 685                 args[ac++] = "--copy-unsafe-links";
 686
 687         if (safe_symlinks)
 688                 args[ac++] = "--safe-links";
 689
 690         if (numeric_ids)
 691                 args[ac++] = "--numeric-ids";
 692
 693         if (only_existing && am_sender)
 694                 args[ac++] = "--existing";
 695
 696         if (tmpdir) {
 697                 args[ac++] = "--temp-dir";
 698                 args[ac++] = tmpdir;
 699         }
 700
 701         if (backup_dir && am_sender) {
 702                 /* only the receiver needs this option, if we are the sender
 703                  *   then we need to send it to the receiver.
 704                  */
 705                 args[ac++] = "--backup-dir";
 706                 args[ac++] = backup_dir;
 707         }
 708
 709         if (compare_dest && am_sender) {
 710                 /* the server only needs this option if it is not the sender,
 711                  *   and it may be an older version that doesn't know this
 712                  *   option, so don't send it if client is the sender.
 713                  */
 714                 args[ac++] = "--compare-dest";
 715                 args[ac++] = compare_dest;
 716         }
 717
 718
 719         *argc = ac;
 720 }
 721