source3/torture/locktest.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    randomised byte range lock tester
   4    Copyright (C) Andrew Tridgell 1999
   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 3 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, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #include "includes.h"
  21
  22 static fstring password[2];
  23 static fstring username[2];
  24 static int got_user;
  25 static int got_pass;
  26 static bool use_kerberos;
  27 static int numops = 1000;
  28 static bool showall;
  29 static bool analyze;
  30 static bool hide_unlock_fails;
  31 static bool use_oplocks;
  32 static unsigned lock_range = 100;
  33 static unsigned lock_base = 0;
  34 static unsigned min_length = 0;
  35 static bool exact_error_codes;
  36 static bool zero_zero;
  37
  38 extern char *optarg;
  39 extern int optind;
  40
  41 #define FILENAME "\\locktest.dat"
  42
  43 #define READ_PCT 50
  44 #define LOCK_PCT 45
  45 #define UNLOCK_PCT 70
  46 #define RANGE_MULTIPLE 1
  47 #define NSERVERS 2
  48 #define NCONNECTIONS 2
  49 #define NFILES 2
  50 #define LOCK_TIMEOUT 0
  51
  52 #define NASTY_POSIX_LOCK_HACK 0
  53
  54 enum lock_op {OP_LOCK, OP_UNLOCK, OP_REOPEN};
  55
  56 static const char *lock_op_type(int op)
  57 {
  58         if (op == WRITE_LOCK) return "write";
  59         else if (op == READ_LOCK) return "read";
  60         else return "other";
  61 }
  62
  63 static const char *lock_op_name(enum lock_op op)
  64 {
  65         if (op == OP_LOCK) return "lock";
  66         else if (op == OP_UNLOCK) return "unlock";
  67         else return "reopen";
  68 }
  69
  70 struct record {
  71         enum lock_op lock_op;
  72         enum brl_type lock_type;
  73         char conn, f;
  74         uint64_t start, len;
  75         char needed;
  76 };
  77
  78 #define PRESETS 0
  79
  80 #if PRESETS
  81 static struct record preset[] = {
  82 {OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
  83 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  84 {OP_LOCK, WRITE_LOCK, 0, 0, 3, 0, 1},
  85 {OP_UNLOCK, 0       , 0, 0, 2, 0, 1},
  86 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  87
  88 {OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
  89 {OP_LOCK, READ_LOCK, 0, 0, 1, 1, 1},
  90 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  91 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  92
  93 {OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
  94 {OP_LOCK, WRITE_LOCK, 0, 0, 3, 1, 1},
  95 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  96 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  97
  98 {OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
  99 {OP_LOCK, WRITE_LOCK, 0, 0, 1, 1, 1},
 100 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
 101 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
 102
 103 {OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
 104 {OP_LOCK, READ_LOCK, 0, 0, 1, 1, 1},
 105 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
 106 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
 107
 108 {OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
 109 {OP_LOCK, READ_LOCK, 0, 0, 3, 1, 1},
 110 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
 111 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
 112
 113 };
 114 #endif
 115
 116 static struct record *recorded;
 117
 118 static void print_brl(struct file_id id,
 119                         struct server_id pid,
 120                         enum brl_type lock_type,
 121                         enum brl_flavour lock_flav,
 122                         br_off start,
 123                         br_off size,
 124                         void *private_data)
 125 {
 126 #if NASTY_POSIX_LOCK_HACK
 127         {
 128                 static SMB_INO_T lastino;
 129
 130                 if (lastino != ino) {
 131                         char *cmd;
 132                         if (asprintf(&cmd,
 133                                  "egrep POSIX.*%u /proc/locks", (int)ino) > 0) {
 134                                 system(cmd);
 135                                 SAFE_FREE(cmd);
 136                         }
 137                 }
 138                 lastino = ino;
 139         }
 140 #endif
 141
 142         printf("%s   %s    %s  %.0f:%.0f(%.0f)\n",
 143                procid_str_static(&pid), file_id_string_tos(&id),
 144                lock_type==READ_LOCK?"R":"W",
 145                (double)start, (double)start+size-1,(double)size);
 146
 147 }
 148
 149
 150 static void show_locks(void)
 151 {
 152         brl_forall(print_brl, NULL);
 153         /* system("cat /proc/locks"); */
 154 }
 155
 156
 157 /*****************************************************
 158 return a connection to a server
 159 *******************************************************/
 160 static struct cli_state *connect_one(char *share, int snum)
 161 {
 162         struct cli_state *c;
 163         struct nmb_name called, calling;
 164         char *server_n;
 165         fstring server;
 166         struct sockaddr_storage ss;
 167         fstring myname;
 168         static int count;
 169         NTSTATUS status;
 170
 171         fstrcpy(server,share+2);
 172         share = strchr_m(server,'\\');
 173         if (!share) return NULL;
 174         *share = 0;
 175         share++;
 176
 177         server_n = server;
 178
 179         zero_sockaddr(&ss);
 180
 181         slprintf(myname,sizeof(myname), "lock-%lu-%u", (unsigned long)getpid(), count++);
 182
 183         make_nmb_name(&calling, myname, 0x0);
 184         make_nmb_name(&called , server, 0x20);
 185
 186  again:
 187         zero_sockaddr(&ss);
 188
 189         /* have to open a new connection */
 190         if (!(c=cli_initialise())) {
 191                 DEBUG(0,("Connection to %s failed\n", server_n));
 192                 return NULL;
 193         }
 194
 195         status = cli_connect(c, server_n, &ss);
 196         if (!NT_STATUS_IS_OK(status)) {
 197                 DEBUG(0,("Connection to %s failed. Error %s\n", server_n, nt_errstr(status) ));
 198                 return NULL;
 199         }
 200
 201         c->use_kerberos = use_kerberos;
 202
 203         if (!cli_session_request(c, &calling, &called)) {
 204                 DEBUG(0,("session request to %s failed\n", called.name));
 205                 cli_shutdown(c);
 206                 if (strcmp(called.name, "*SMBSERVER")) {
 207                         make_nmb_name(&called , "*SMBSERVER", 0x20);
 208                         goto again;
 209                 }
 210                 return NULL;
 211         }
 212
 213         DEBUG(4,(" session request ok\n"));
 214
 215         status = cli_negprot(c);
 216         if (!NT_STATUS_IS_OK(status)) {
 217                 DEBUG(0, ("protocol negotiation failed: %s\n",
 218                           nt_errstr(status)));
 219                 cli_shutdown(c);
 220                 return NULL;
 221         }
 222
 223         if (!got_pass) {
 224                 char *pass = getpass("Password: ");
 225                 if (pass) {
 226                         fstrcpy(password[0], pass);
 227                         fstrcpy(password[1], pass);
 228                 }
 229         }
 230
 231         if (got_pass == 1) {
 232                 fstrcpy(password[1], password[0]);
 233                 fstrcpy(username[1], username[0]);
 234         }
 235
 236         status = cli_session_setup(c, username[snum],
 237                                    password[snum], strlen(password[snum]),
 238                                    password[snum], strlen(password[snum]),
 239                                    lp_workgroup());
 240         if (!NT_STATUS_IS_OK(status)) {
 241                 DEBUG(0,("session setup failed: %s\n", nt_errstr(status)));
 242                 return NULL;
 243         }
 244
 245         /*
 246          * These next two lines are needed to emulate
 247          * old client behaviour for people who have
 248          * scripts based on client output.
 249          * QUESTION ? Do we want to have a 'client compatibility
 250          * mode to turn these on/off ? JRA.
 251          */
 252
 253         if (*c->server_domain || *c->server_os || *c->server_type)
 254                 DEBUG(1,("Domain=[%s] OS=[%s] Server=[%s]\n",
 255                         c->server_domain,c->server_os,c->server_type));
 256
 257         DEBUG(4,(" session setup ok\n"));
 258
 259         status = cli_tcon_andx(c, share, "?????", password[snum],
 260                                strlen(password[snum])+1);
 261         if (!NT_STATUS_IS_OK(status)) {
 262                 DEBUG(0,("tree connect failed: %s\n", nt_errstr(status)));
 263                 cli_shutdown(c);
 264                 return NULL;
 265         }
 266
 267         DEBUG(4,(" tconx ok\n"));
 268
 269         c->use_oplocks = use_oplocks;
 270
 271         return c;
 272 }
 273
 274
 275 static void reconnect(struct cli_state *cli[NSERVERS][NCONNECTIONS], uint16_t fnum[NSERVERS][NCONNECTIONS][NFILES],
 276                       char *share[NSERVERS])
 277 {
 278         int server, conn, f;
 279
 280         for (server=0;server<NSERVERS;server++)
 281         for (conn=0;conn<NCONNECTIONS;conn++) {
 282                 if (cli[server][conn]) {
 283                         for (f=0;f<NFILES;f++) {
 284                                 if (fnum[server][conn][f] != (uint16_t)-1) {
 285                                         cli_close(cli[server][conn], fnum[server][conn][f]);
 286                                         fnum[server][conn][f] = (uint16_t)-1;
 287                                 }
 288                         }
 289                         cli_ulogoff(cli[server][conn]);
 290                         cli_shutdown(cli[server][conn]);
 291                 }
 292                 cli[server][conn] = connect_one(share[server], server);
 293                 if (!cli[server][conn]) {
 294                         DEBUG(0,("Failed to connect to %s\n", share[server]));
 295                         exit(1);
 296                 }
 297         }
 298 }
 299
 300
 301
 302 static bool test_one(struct cli_state *cli[NSERVERS][NCONNECTIONS],
 303                      uint16_t fnum[NSERVERS][NCONNECTIONS][NFILES],
 304                      struct record *rec)
 305 {
 306         unsigned conn = rec->conn;
 307         unsigned f = rec->f;
 308         uint64_t start = rec->start;
 309         uint64_t len = rec->len;
 310         enum brl_type op = rec->lock_type;
 311         int server;
 312         bool ret[NSERVERS];
 313         NTSTATUS status[NSERVERS];
 314
 315         switch (rec->lock_op) {
 316         case OP_LOCK:
 317                 /* set a lock */
 318                 for (server=0;server<NSERVERS;server++) {
 319                         ret[server] = cli_lock64(cli[server][conn],
 320                                                  fnum[server][conn][f],
 321                                                  start, len, LOCK_TIMEOUT, op);
 322                         status[server] = cli_nt_error(cli[server][conn]);
 323                         if (!exact_error_codes &&
 324                             NT_STATUS_EQUAL(status[server],
 325                                             NT_STATUS_FILE_LOCK_CONFLICT)) {
 326                                 status[server] = NT_STATUS_LOCK_NOT_GRANTED;
 327                         }
 328                 }
 329                 if (showall || !NT_STATUS_EQUAL(status[0],status[1])) {
 330                         printf("lock   conn=%u f=%u range=%.0f(%.0f) op=%s -> %s:%s\n",
 331                                conn, f,
 332                                (double)start, (double)len,
 333                                op==READ_LOCK?"READ_LOCK":"WRITE_LOCK",
 334                                nt_errstr(status[0]), nt_errstr(status[1]));
 335                 }
 336                 if (showall || !NT_STATUS_EQUAL(status[0],status[1])) show_locks();
 337                 if (!NT_STATUS_EQUAL(status[0],status[1])) return False;
 338                 break;
 339
 340         case OP_UNLOCK:
 341                 /* unset a lock */
 342                 for (server=0;server<NSERVERS;server++) {
 343                         ret[server] = NT_STATUS_IS_OK(cli_unlock64(cli[server][conn],
 344                                                    fnum[server][conn][f],
 345                                                    start, len));
 346                         status[server] = cli_nt_error(cli[server][conn]);
 347                 }
 348                 if (showall ||
 349                     (!hide_unlock_fails && !NT_STATUS_EQUAL(status[0],status[1]))) {
 350                         printf("unlock conn=%u f=%u range=%.0f(%.0f)       -> %s:%s\n",
 351                                conn, f,
 352                                (double)start, (double)len,
 353                                nt_errstr(status[0]), nt_errstr(status[1]));
 354                 }
 355                 if (showall || !NT_STATUS_EQUAL(status[0],status[1])) show_locks();
 356                 if (!hide_unlock_fails && !NT_STATUS_EQUAL(status[0],status[1]))
 357                         return False;
 358                 break;
 359
 360         case OP_REOPEN:
 361                 /* reopen the file */
 362                 for (server=0;server<NSERVERS;server++) {
 363                         cli_close(cli[server][conn], fnum[server][conn][f]);
 364                         fnum[server][conn][f] = (uint16_t)-1;
 365                 }
 366                 for (server=0;server<NSERVERS;server++) {
 367                         fnum[server][conn][f] = (uint16_t)-1;
 368                         if (!NT_STATUS_IS_OK(cli_open(cli[server][conn], FILENAME,
 369                                                          O_RDWR|O_CREAT,
 370                                                          DENY_NONE, &fnum[server][conn][f]))) {
 371                                 printf("failed to reopen on share%d\n", server);
 372                                 return False;
 373                         }
 374                 }
 375                 if (showall) {
 376                         printf("reopen conn=%u f=%u\n",
 377                                conn, f);
 378                         show_locks();
 379                 }
 380                 break;
 381         }
 382
 383         return True;
 384 }
 385
 386 static void close_files(struct cli_state *cli[NSERVERS][NCONNECTIONS],
 387                         uint16_t fnum[NSERVERS][NCONNECTIONS][NFILES])
 388 {
 389         int server, conn, f;
 390
 391         for (server=0;server<NSERVERS;server++)
 392         for (conn=0;conn<NCONNECTIONS;conn++)
 393         for (f=0;f<NFILES;f++) {
 394                 if (fnum[server][conn][f] != (uint16_t)-1) {
 395                         cli_close(cli[server][conn], fnum[server][conn][f]);
 396                         fnum[server][conn][f] = (uint16_t)-1;
 397                 }
 398         }
 399         for (server=0;server<NSERVERS;server++) {
 400                 cli_unlink(cli[server][0], FILENAME, aSYSTEM | aHIDDEN);
 401         }
 402 }
 403
 404 static void open_files(struct cli_state *cli[NSERVERS][NCONNECTIONS],
 405                        uint16_t fnum[NSERVERS][NCONNECTIONS][NFILES])
 406 {
 407         int server, conn, f;
 408
 409         for (server=0;server<NSERVERS;server++)
 410         for (conn=0;conn<NCONNECTIONS;conn++)
 411         for (f=0;f<NFILES;f++) {
 412                 fnum[server][conn][f] = (uint16_t)-1;
 413                 if (!NT_STATUS_IS_OK(cli_open(cli[server][conn], FILENAME,
 414                                                  O_RDWR|O_CREAT,
 415                                                  DENY_NONE,
 416                                                  &fnum[server][conn][f]))) {
 417                         fprintf(stderr,"Failed to open fnum[%u][%u][%u]\n",
 418                                 server, conn, f);
 419                         exit(1);
 420                 }
 421         }
 422 }
 423
 424
 425 static int retest(struct cli_state *cli[NSERVERS][NCONNECTIONS],
 426                    uint16_t fnum[NSERVERS][NCONNECTIONS][NFILES],
 427                    int n)
 428 {
 429         int i;
 430         printf("testing %u ...\n", n);
 431         for (i=0; i<n; i++) {
 432                 if (i && i % 100 == 0) {
 433                         printf("%u\n", i);
 434                 }
 435
 436                 if (recorded[i].needed &&
 437                     !test_one(cli, fnum, &recorded[i])) return i;
 438         }
 439         return n;
 440 }
 441
 442
 443 /* each server has two connections open to it. Each connection has two file
 444    descriptors open on the file - 8 file descriptors in total
 445
 446    we then do random locking ops in tamdem on the 4 fnums from each
 447    server and ensure that the results match
 448  */
 449 static void test_locks(char *share[NSERVERS])
 450 {
 451         struct cli_state *cli[NSERVERS][NCONNECTIONS];
 452         uint16_t fnum[NSERVERS][NCONNECTIONS][NFILES];
 453         int n, i, n1, skip, r1, r2;
 454
 455         ZERO_STRUCT(fnum);
 456         ZERO_STRUCT(cli);
 457
 458         recorded = SMB_MALLOC_ARRAY(struct record, numops);
 459
 460         for (n=0; n<numops; n++) {
 461 #if PRESETS
 462                 if (n < sizeof(preset) / sizeof(preset[0])) {
 463                         recorded[n] = preset[n];
 464                 } else {
 465 #endif
 466                         recorded[n].conn = random() % NCONNECTIONS;
 467                         recorded[n].f = random() % NFILES;
 468                         recorded[n].start = lock_base + ((unsigned)random() % (lock_range-1));
 469                         recorded[n].len =  min_length +
 470                                 random() % (lock_range-(recorded[n].start-lock_base));
 471                         recorded[n].start *= RANGE_MULTIPLE;
 472                         recorded[n].len *= RANGE_MULTIPLE;
 473                         r1 = random() % 100;
 474                         r2 = random() % 100;
 475                         if (r1 < READ_PCT) {
 476                                 recorded[n].lock_type = READ_LOCK;
 477                         } else {
 478                                 recorded[n].lock_type = WRITE_LOCK;
 479                         }
 480                         if (r2 < LOCK_PCT) {
 481                                 recorded[n].lock_op = OP_LOCK;
 482                         } else if (r2 < UNLOCK_PCT) {
 483                                 recorded[n].lock_op = OP_UNLOCK;
 484                         } else {
 485                                 recorded[n].lock_op = OP_REOPEN;
 486                         }
 487                         recorded[n].needed = True;
 488                         if (!zero_zero && recorded[n].start==0 && recorded[n].len==0) {
 489                                 recorded[n].len = 1;
 490                         }
 491 #if PRESETS
 492                 }
 493 #endif
 494         }
 495
 496         reconnect(cli, fnum, share);
 497         open_files(cli, fnum);
 498         n = retest(cli, fnum, numops);
 499
 500         if (n == numops || !analyze) return;
 501         n++;
 502
 503         skip = n/2;
 504
 505         while (1) {
 506                 n1 = n;
 507
 508                 close_files(cli, fnum);
 509                 reconnect(cli, fnum, share);
 510                 open_files(cli, fnum);
 511
 512                 for (i=0;i<n-skip;i+=skip) {
 513                         int m, j;
 514                         printf("excluding %d-%d\n", i, i+skip-1);
 515                         for (j=i;j<i+skip;j++) {
 516                                 recorded[j].needed = False;
 517                         }
 518
 519                         close_files(cli, fnum);
 520                         open_files(cli, fnum);
 521
 522                         m = retest(cli, fnum, n);
 523                         if (m == n) {
 524                                 for (j=i;j<i+skip;j++) {
 525                                         recorded[j].needed = True;
 526                                 }
 527                         } else {
 528                                 if (i+(skip-1) < m) {
 529                                         memmove(&recorded[i], &recorded[i+skip],
 530                                                 (m-(i+skip-1))*sizeof(recorded[0]));
 531                                 }
 532                                 n = m-(skip-1);
 533                                 i--;
 534                         }
 535                 }
 536
 537                 if (skip > 1) {
 538                         skip = skip/2;
 539                         printf("skip=%d\n", skip);
 540                         continue;
 541                 }
 542
 543                 if (n1 == n) break;
 544         }
 545
 546         close_files(cli, fnum);
 547         reconnect(cli, fnum, share);
 548         open_files(cli, fnum);
 549         showall = True;
 550         n1 = retest(cli, fnum, n);
 551         if (n1 != n-1) {
 552                 printf("ERROR - inconsistent result (%u %u)\n", n1, n);
 553         }
 554         close_files(cli, fnum);
 555
 556         for (i=0;i<n;i++) {
 557                 printf("{%s, %s, conn = %u, file = %u, start = %.0f, len = %.0f, %u},\n",
 558                        lock_op_name(recorded[i].lock_op),
 559                        lock_op_type(recorded[i].lock_type),
 560                        recorded[i].conn,
 561                        recorded[i].f,
 562                        (double)recorded[i].start,
 563                        (double)recorded[i].len,
 564                        recorded[i].needed);
 565         }
 566 }
 567
 568
 569
 570 static void usage(void)
 571 {
 572         printf(
 573 "Usage:\n\
 574   locktest //server1/share1 //server2/share2 [options..]\n\
 575   options:\n\
 576         -U user%%pass        (may be specified twice)\n\
 577         -k               use kerberos\n\
 578         -s seed\n\
 579         -o numops\n\
 580         -u          hide unlock fails\n\
 581         -a          (show all ops)\n\
 582         -A          analyse for minimal ops\n\
 583         -O          use oplocks\n\
 584         -E          enable exact error code checking\n\
 585         -Z          enable the zero/zero lock\n\
 586         -R range    set lock range\n\
 587         -B base     set lock base\n\
 588         -M min      set min lock length\n\
 589 ");
 590 }
 591
 592 /****************************************************************************
 593   main program
 594 ****************************************************************************/
 595  int main(int argc,char *argv[])
 596 {
 597         char *share[NSERVERS];
 598         int opt;
 599         char *p;
 600         int seed, server;
 601
 602         setlinebuf(stdout);
 603
 604         load_case_tables();
 605
 606         if (argc < 3 || argv[1][0] == '-') {
 607                 usage();
 608                 exit(1);
 609         }
 610
 611         setup_logging(argv[0], DEBUG_STDOUT);
 612
 613         for (server=0;server<NSERVERS;server++) {
 614                 share[server] = argv[1+server];
 615                 all_string_sub(share[server],"/","\\",0);
 616         }
 617
 618         argc -= NSERVERS;
 619         argv += NSERVERS;
 620
 621         lp_load(get_dyn_CONFIGFILE(),True,False,False,True);
 622         load_interfaces();
 623
 624         if (getenv("USER")) {
 625                 fstrcpy(username[0],getenv("USER"));
 626                 fstrcpy(username[1],getenv("USER"));
 627         }
 628
 629         seed = time(NULL);
 630
 631         while ((opt = getopt(argc, argv, "U:s:ho:aAW:OkR:B:M:EZ")) != EOF) {
 632                 switch (opt) {
 633                 case 'k':
 634 #ifdef HAVE_KRB5
 635                         use_kerberos = True;
 636 #else
 637                         d_printf("No kerberos support compiled in\n");
 638                         exit(1);
 639 #endif
 640                         break;
 641                 case 'U':
 642                         got_user = 1;
 643                         if (got_pass == 2) {
 644                                 d_printf("Max of 2 usernames\n");
 645                                 exit(1);
 646                         }
 647                         fstrcpy(username[got_pass],optarg);
 648                         p = strchr_m(username[got_pass],'%');
 649                         if (p) {
 650                                 *p = 0;
 651                                 fstrcpy(password[got_pass], p+1);
 652                                 got_pass++;
 653                         }
 654                         break;
 655                 case 'R':
 656                         lock_range = strtol(optarg, NULL, 0);
 657                         break;
 658                 case 'B':
 659                         lock_base = strtol(optarg, NULL, 0);
 660                         break;
 661                 case 'M':
 662                         min_length = strtol(optarg, NULL, 0);
 663                         break;
 664                 case 's':
 665                         seed = atoi(optarg);
 666                         break;
 667                 case 'u':
 668                         hide_unlock_fails = True;
 669                         break;
 670                 case 'o':
 671                         numops = atoi(optarg);
 672                         break;
 673                 case 'O':
 674                         use_oplocks = True;
 675                         break;
 676                 case 'a':
 677                         showall = True;
 678                         break;
 679                 case 'A':
 680                         analyze = True;
 681                         break;
 682                 case 'Z':
 683                         zero_zero = True;
 684                         break;
 685                 case 'E':
 686                         exact_error_codes = True;
 687                         break;
 688                 case 'h':
 689                         usage();
 690                         exit(1);
 691                 default:
 692                         printf("Unknown option %c (%d)\n", (char)opt, opt);
 693                         exit(1);
 694                 }
 695         }
 696
 697         if(use_kerberos && !got_user) got_pass = True;
 698
 699         argc -= optind;
 700         argv += optind;
 701
 702         DEBUG(0,("seed=%u\n", seed));
 703         srandom(seed);
 704
 705         test_locks(share);
 706
 707         return(0);
 708 }