source4/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 #include "lib/cmdline/popt_common.h"
  22 #include "system/filesys.h"
  23 #include "system/time.h"
  24 #include "pstring.h"
  25 #include "auth/credentials/credentials.h"
  26 #include "auth/gensec/gensec.h"
  27 #include "libcli/libcli.h"
  28 #include "param/param.h"
  29 #include "dynconfig.h"
  30 #include "libcli/resolve/resolve.h"
  31
  32 static int numops = 1000;
  33 static int showall;
  34 static int analyze;
  35 static int hide_unlock_fails;
  36 static int use_oplocks;
  37 static uint_t lock_range = 100;
  38 static uint_t lock_base = 0;
  39 static uint_t min_length = 0;
  40 static int exact_error_codes;
  41 static int zero_zero;
  42
  43 #define FILENAME "\\locktest.dat"
  44
  45 #define READ_PCT 50
  46 #define LOCK_PCT 45
  47 #define UNLOCK_PCT 70
  48 #define RANGE_MULTIPLE 1
  49 #define NSERVERS 2
  50 #define NCONNECTIONS 2
  51 #define NFILES 2
  52 #define LOCK_TIMEOUT 0
  53
  54 static struct cli_credentials *servers[NSERVERS];
  55
  56 enum lock_op {OP_LOCK, OP_UNLOCK, OP_REOPEN};
  57
  58 struct record {
  59         enum lock_op lock_op;
  60         enum brl_type lock_type;
  61         char conn, f;
  62         uint64_t start, len;
  63         char needed;
  64         uint16_t pid;
  65 };
  66
  67 #define PRESETS 0
  68
  69 #if PRESETS
  70 static struct record preset[] = {
  71 {OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
  72 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  73 {OP_LOCK, WRITE_LOCK, 0, 0, 3, 0, 1},
  74 {OP_UNLOCK, 0       , 0, 0, 2, 0, 1},
  75 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  76
  77 {OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
  78 {OP_LOCK, READ_LOCK, 0, 0, 1, 1, 1},
  79 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  80 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  81
  82 {OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
  83 {OP_LOCK, WRITE_LOCK, 0, 0, 3, 1, 1},
  84 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  85 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  86
  87 {OP_LOCK, READ_LOCK, 0, 0, 2, 0, 1},
  88 {OP_LOCK, WRITE_LOCK, 0, 0, 1, 1, 1},
  89 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  90 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  91
  92 {OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
  93 {OP_LOCK, READ_LOCK, 0, 0, 1, 1, 1},
  94 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
  95 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
  96
  97 {OP_LOCK, WRITE_LOCK, 0, 0, 2, 0, 1},
  98 {OP_LOCK, READ_LOCK, 0, 0, 3, 1, 1},
  99 {OP_LOCK, WRITE_LOCK, 0, 0, 0, 0, 1},
 100 {OP_REOPEN, 0, 0, 0, 0, 0, 1},
 101
 102 };
 103 #endif
 104
 105 static struct record *recorded;
 106
 107 /*****************************************************
 108 return a connection to a server
 109 *******************************************************/
 110 static struct smbcli_state *connect_one(struct loadparm_context *lp_ctx,
 111                                         char *share, int snum, int conn)
 112 {
 113         struct smbcli_state *c;
 114         fstring server, myname;
 115         NTSTATUS status;
 116         int retries = 10;
 117         struct smbcli_options options;
 118
 119         lp_smbcli_options(lp_ctx, &options);
 120
 121         printf("connect_one(%s, %d, %d)\n", share, snum, conn);
 122
 123         fstrcpy(server,share+2);
 124         share = strchr_m(server,'\\');
 125         if (!share) return NULL;
 126         *share = 0;
 127         share++;
 128
 129         if (snum == 0) {
 130                 char **unc_list = NULL;
 131                 int num_unc_names;
 132                 const char *p;
 133                 p = lp_parm_string(lp_ctx, NULL, "torture", "unclist");
 134                 if (p) {
 135                         char *h, *s;
 136                         unc_list = file_lines_load(p, &num_unc_names, NULL);
 137                         if (!unc_list || num_unc_names <= 0) {
 138                                 printf("Failed to load unc names list from '%s'\n", p);
 139                                 exit(1);
 140                         }
 141
 142                         if (!smbcli_parse_unc(unc_list[conn % num_unc_names],
 143                                               NULL, &h, &s)) {
 144                                 printf("Failed to parse UNC name %s\n",
 145                                        unc_list[conn % num_unc_names]);
 146                                 exit(1);
 147                         }
 148                         fstrcpy(server, h);
 149                         fstrcpy(share, s);
 150                 }
 151         }
 152
 153
 154         slprintf(myname,sizeof(myname), "lock-%u-%u", getpid(), snum);
 155         cli_credentials_set_workstation(servers[snum], myname, CRED_SPECIFIED);
 156
 157         do {
 158                 printf("\\\\%s\\%s\n", server, share);
 159                 status = smbcli_full_connection(NULL, &c,
 160                                                 server,
 161                                                 lp_smb_ports(lp_ctx),
 162                                                 share, NULL,
 163                                                 servers[snum],
 164                                                 lp_resolve_context(lp_ctx),
 165                                                 NULL, &options);
 166                 if (!NT_STATUS_IS_OK(status)) {
 167                         sleep(2);
 168                 }
 169         } while (!NT_STATUS_IS_OK(status) && retries--);
 170
 171         if (!NT_STATUS_IS_OK(status)) {
 172                 return NULL;
 173         }
 174
 175         return c;
 176 }
 177
 178
 179 static void reconnect(struct loadparm_context *lp_ctx,
 180                       struct smbcli_state *cli[NSERVERS][NCONNECTIONS], int fnum[NSERVERS][NCONNECTIONS][NFILES],
 181                       char *share[NSERVERS])
 182 {
 183         int server, conn, f;
 184
 185         for (server=0;server<NSERVERS;server++)
 186         for (conn=0;conn<NCONNECTIONS;conn++) {
 187                 if (cli[server][conn]) {
 188                         for (f=0;f<NFILES;f++) {
 189                                 if (fnum[server][conn][f] != -1) {
 190                                         smbcli_close(cli[server][conn]->tree, fnum[server][conn][f]);
 191                                         fnum[server][conn][f] = -1;
 192                                 }
 193                         }
 194                         talloc_free(cli[server][conn]);
 195                 }
 196                 cli[server][conn] = connect_one(lp_ctx, share[server],
 197                                                 server, conn);
 198                 if (!cli[server][conn]) {
 199                         DEBUG(0,("Failed to connect to %s\n", share[server]));
 200                         exit(1);
 201                 }
 202         }
 203 }
 204
 205
 206
 207 static bool test_one(struct smbcli_state *cli[NSERVERS][NCONNECTIONS],
 208                      int fnum[NSERVERS][NCONNECTIONS][NFILES],
 209                      struct record *rec)
 210 {
 211         uint_t conn = rec->conn;
 212         uint_t f = rec->f;
 213         uint64_t start = rec->start;
 214         uint64_t len = rec->len;
 215         enum brl_type op = rec->lock_type;
 216         int server;
 217         bool ret[NSERVERS];
 218         NTSTATUS status[NSERVERS];
 219
 220         switch (rec->lock_op) {
 221         case OP_LOCK:
 222                 /* set a lock */
 223                 for (server=0;server<NSERVERS;server++) {
 224                         NTSTATUS res;
 225                         struct smbcli_tree *tree=cli[server][conn]->tree;
 226                         int fn=fnum[server][conn][f];
 227
 228                         if (!(tree->session->transport->negotiate.capabilities & CAP_LARGE_FILES)) {
 229                                 res=smbcli_lock(tree, fn, start, len, LOCK_TIMEOUT, rec->lock_op);
 230                         } else {
 231                                 union smb_lock parms;
 232                                 int ltype;
 233                                 struct smb_lock_entry lock[1];
 234
 235                                 parms.lockx.level = RAW_LOCK_LOCKX;
 236                                 parms.lockx.in.file.fnum = fn;
 237
 238                                 ltype = (rec->lock_op == READ_LOCK? 1 : 0);
 239                                 ltype |= LOCKING_ANDX_LARGE_FILES;
 240                                 parms.lockx.in.mode = ltype;
 241                                 parms.lockx.in.timeout = LOCK_TIMEOUT;
 242                                 parms.lockx.in.ulock_cnt = 0;
 243                                 parms.lockx.in.lock_cnt = 1;
 244                                 lock[0].pid = rec->pid;
 245                                 lock[0].offset = start;
 246                                 lock[0].count = len;
 247                                 parms.lockx.in.locks = &lock[0];
 248
 249                                 res = smb_raw_lock(tree, &parms);
 250                         }
 251
 252                         ret[server] = NT_STATUS_IS_OK(res);
 253                         status[server] = smbcli_nt_error(cli[server][conn]->tree);
 254                         if (!exact_error_codes &&
 255                             NT_STATUS_EQUAL(status[server],
 256                                             NT_STATUS_FILE_LOCK_CONFLICT)) {
 257                                 status[server] = NT_STATUS_LOCK_NOT_GRANTED;
 258                         }
 259                 }
 260                 if (showall || !NT_STATUS_EQUAL(status[0],status[1])) {
 261                         printf("lock   conn=%u f=%u range=%.0f(%.0f) op=%s -> %s:%s\n",
 262                                conn, f,
 263                                (double)start, (double)len,
 264                                op==READ_LOCK?"READ_LOCK":"WRITE_LOCK",
 265                                nt_errstr(status[0]), nt_errstr(status[1]));
 266                 }
 267                 if (!NT_STATUS_EQUAL(status[0],status[1])) return false;
 268                 break;
 269
 270         case OP_UNLOCK:
 271                 /* unset a lock */
 272                 for (server=0;server<NSERVERS;server++) {
 273                         NTSTATUS res;
 274                         struct smbcli_tree *tree=cli[server][conn]->tree;
 275                         int fn=fnum[server][conn][f];
 276
 277
 278                         if (!(tree->session->transport->negotiate.capabilities & CAP_LARGE_FILES)) {
 279                                 res=smbcli_unlock(tree, fn, start, len);
 280                         } else {
 281                                 union smb_lock parms;
 282                                 struct smb_lock_entry lock[1];
 283
 284                                 parms.lockx.level = RAW_LOCK_LOCKX;
 285                                 parms.lockx.in.file.fnum = fn;
 286                                 parms.lockx.in.mode = LOCKING_ANDX_LARGE_FILES;
 287                                 parms.lockx.in.timeout = 0;
 288                                 parms.lockx.in.ulock_cnt = 1;
 289                                 parms.lockx.in.lock_cnt = 0;
 290                                 lock[0].pid = rec->pid;
 291                                 lock[0].count = len;
 292                                 lock[0].offset = start;
 293                                 parms.lockx.in.locks = &lock[0];
 294
 295                                 res = smb_raw_lock(tree, &parms);
 296                         }
 297
 298                         ret[server] = NT_STATUS_IS_OK(res);
 299                         status[server] = smbcli_nt_error(cli[server][conn]->tree);
 300                 }
 301                 if (showall ||
 302                     (!hide_unlock_fails && !NT_STATUS_EQUAL(status[0],status[1]))) {
 303                         printf("unlock conn=%u f=%u range=%.0f(%.0f)       -> %s:%s\n",
 304                                conn, f,
 305                                (double)start, (double)len,
 306                                nt_errstr(status[0]), nt_errstr(status[1]));
 307                 }
 308                 if (!hide_unlock_fails && !NT_STATUS_EQUAL(status[0],status[1]))
 309                         return false;
 310                 break;
 311
 312         case OP_REOPEN:
 313                 /* reopen the file */
 314                 for (server=0;server<NSERVERS;server++) {
 315                         smbcli_close(cli[server][conn]->tree, fnum[server][conn][f]);
 316                         fnum[server][conn][f] = -1;
 317                 }
 318                 for (server=0;server<NSERVERS;server++) {
 319                         fnum[server][conn][f] = smbcli_open(cli[server][conn]->tree, FILENAME,
 320                                                          O_RDWR|O_CREAT,
 321                                                          DENY_NONE);
 322                         if (fnum[server][conn][f] == -1) {
 323                                 printf("failed to reopen on share%d\n", server);
 324                                 return false;
 325                         }
 326                 }
 327                 if (showall) {
 328                         printf("reopen conn=%u f=%u\n",
 329                                conn, f);
 330                 }
 331                 break;
 332         }
 333
 334         return true;
 335 }
 336
 337 static void close_files(struct smbcli_state *cli[NSERVERS][NCONNECTIONS],
 338                         int fnum[NSERVERS][NCONNECTIONS][NFILES])
 339 {
 340         int server, conn, f;
 341
 342         for (server=0;server<NSERVERS;server++)
 343         for (conn=0;conn<NCONNECTIONS;conn++)
 344         for (f=0;f<NFILES;f++) {
 345                 if (fnum[server][conn][f] != -1) {
 346                         smbcli_close(cli[server][conn]->tree, fnum[server][conn][f]);
 347                         fnum[server][conn][f] = -1;
 348                 }
 349         }
 350         for (server=0;server<NSERVERS;server++) {
 351                 smbcli_unlink(cli[server][0]->tree, FILENAME);
 352         }
 353 }
 354
 355 static void open_files(struct smbcli_state *cli[NSERVERS][NCONNECTIONS],
 356                        int fnum[NSERVERS][NCONNECTIONS][NFILES])
 357 {
 358         int server, conn, f;
 359
 360         for (server=0;server<NSERVERS;server++)
 361         for (conn=0;conn<NCONNECTIONS;conn++)
 362         for (f=0;f<NFILES;f++) {
 363                 fnum[server][conn][f] = smbcli_open(cli[server][conn]->tree, FILENAME,
 364                                                  O_RDWR|O_CREAT,
 365                                                  DENY_NONE);
 366                 if (fnum[server][conn][f] == -1) {
 367                         fprintf(stderr,"Failed to open fnum[%u][%u][%u]\n",
 368                                 server, conn, f);
 369                         exit(1);
 370                 }
 371         }
 372 }
 373
 374
 375 static int retest(struct smbcli_state *cli[NSERVERS][NCONNECTIONS],
 376                    int fnum[NSERVERS][NCONNECTIONS][NFILES],
 377                    int n)
 378 {
 379         int i;
 380         printf("testing %u ...\n", n);
 381         for (i=0; i<n; i++) {
 382                 if (i && i % 100 == 0) {
 383                         printf("%u\n", i);
 384                 }
 385
 386                 if (recorded[i].needed &&
 387                     !test_one(cli, fnum, &recorded[i])) return i;
 388         }
 389         return n;
 390 }
 391
 392
 393 /* each server has two connections open to it. Each connection has two file
 394    descriptors open on the file - 8 file descriptors in total
 395
 396    we then do random locking ops in tamdem on the 4 fnums from each
 397    server and ensure that the results match
 398  */
 399 static int test_locks(struct loadparm_context *lp_ctx, char *share[NSERVERS])
 400 {
 401         struct smbcli_state *cli[NSERVERS][NCONNECTIONS];
 402         int fnum[NSERVERS][NCONNECTIONS][NFILES];
 403         int n, i, n1, skip, r1, r2;
 404
 405         ZERO_STRUCT(fnum);
 406         ZERO_STRUCT(cli);
 407
 408         recorded = malloc_array_p(struct record, numops);
 409
 410         for (n=0; n<numops; n++) {
 411 #if PRESETS
 412                 if (n < sizeof(preset) / sizeof(preset[0])) {
 413                         recorded[n] = preset[n];
 414                 } else {
 415 #endif
 416                         recorded[n].conn = random() % NCONNECTIONS;
 417                         recorded[n].f = random() % NFILES;
 418                         recorded[n].start = lock_base + ((uint_t)random() % (lock_range-1));
 419                         recorded[n].len =  min_length +
 420                                 random() % (lock_range-(recorded[n].start-lock_base));
 421                         recorded[n].start *= RANGE_MULTIPLE;
 422                         recorded[n].len *= RANGE_MULTIPLE;
 423                         recorded[n].pid = random()%3;
 424                         if (recorded[n].pid == 2) {
 425                                 recorded[n].pid = 0xFFFF; /* see if its magic */
 426                         }
 427                         r1 = random() % 100;
 428                         r2 = random() % 100;
 429                         if (r1 < READ_PCT) {
 430                                 recorded[n].lock_type = READ_LOCK;
 431                         } else {
 432                                 recorded[n].lock_type = WRITE_LOCK;
 433                         }
 434                         if (r2 < LOCK_PCT) {
 435                                 recorded[n].lock_op = OP_LOCK;
 436                         } else if (r2 < UNLOCK_PCT) {
 437                                 recorded[n].lock_op = OP_UNLOCK;
 438                         } else {
 439                                 recorded[n].lock_op = OP_REOPEN;
 440                         }
 441                         recorded[n].needed = true;
 442                         if (!zero_zero && recorded[n].start==0 && recorded[n].len==0) {
 443                                 recorded[n].len = 1;
 444                         }
 445 #if PRESETS
 446                 }
 447 #endif
 448         }
 449
 450         reconnect(lp_ctx, cli, fnum, share);
 451         open_files(cli, fnum);
 452         n = retest(cli, fnum, numops);
 453
 454         if (n == numops || !analyze) {
 455                 if (n != numops) {
 456                         return 1;
 457                 }
 458                 return 0;
 459         }
 460         n++;
 461
 462         skip = n/2;
 463
 464         while (1) {
 465                 n1 = n;
 466
 467                 close_files(cli, fnum);
 468                 reconnect(lp_ctx, cli, fnum, share);
 469                 open_files(cli, fnum);
 470
 471                 for (i=0;i<n-skip;i+=skip) {
 472                         int m, j;
 473                         printf("excluding %d-%d\n", i, i+skip-1);
 474                         for (j=i;j<i+skip;j++) {
 475                                 recorded[j].needed = false;
 476                         }
 477
 478                         close_files(cli, fnum);
 479                         open_files(cli, fnum);
 480
 481                         m = retest(cli, fnum, n);
 482                         if (m == n) {
 483                                 for (j=i;j<i+skip;j++) {
 484                                         recorded[j].needed = true;
 485                                 }
 486                         } else {
 487                                 if (i+(skip-1) < m) {
 488                                         memmove(&recorded[i], &recorded[i+skip],
 489                                                 (m-(i+skip-1))*sizeof(recorded[0]));
 490                                 }
 491                                 n = m-(skip-1);
 492                                 i--;
 493                         }
 494                 }
 495
 496                 if (skip > 1) {
 497                         skip = skip/2;
 498                         printf("skip=%d\n", skip);
 499                         continue;
 500                 }
 501
 502                 if (n1 == n) break;
 503         }
 504
 505         close_files(cli, fnum);
 506         reconnect(lp_ctx, cli, fnum, share);
 507         open_files(cli, fnum);
 508         showall = true;
 509         n1 = retest(cli, fnum, n);
 510         if (n1 != n-1) {
 511                 printf("ERROR - inconsistent result (%u %u)\n", n1, n);
 512         }
 513         close_files(cli, fnum);
 514
 515         for (i=0;i<n;i++) {
 516                 printf("{%d, %d, %u, %u, %.0f, %.0f, %u},\n",
 517                        recorded[i].lock_op,
 518                        recorded[i].lock_type,
 519                        recorded[i].conn,
 520                        recorded[i].f,
 521                        (double)recorded[i].start,
 522                        (double)recorded[i].len,
 523                        recorded[i].needed);
 524         }
 525
 526         return 1;
 527 }
 528
 529
 530
 531 static void usage(poptContext pc)
 532 {
 533         printf("Usage:\n\tlocktest //server1/share1 //server2/share2 [options..]\n");
 534         poptPrintUsage(pc, stdout, 0);
 535 }
 536
 537 /****************************************************************************
 538   main program
 539 ****************************************************************************/
 540  int main(int argc,char *argv[])
 541 {
 542         char *share[NSERVERS];
 543         int opt;
 544         int seed, server;
 545         int username_count=0;
 546         struct loadparm_context *lp_ctx;
 547         poptContext pc;
 548         int argc_new, i;
 549         char **argv_new;
 550         enum {OPT_UNCLIST=1000};
 551         struct poptOption long_options[] = {
 552                 POPT_AUTOHELP
 553                 {"seed",          0, POPT_ARG_INT,  &seed,      0,      "Seed to use for randomizer",   NULL},
 554                 {"num-ops",       0, POPT_ARG_INT,  &numops,    0,      "num ops",      NULL},
 555                 {"lockrange",     0, POPT_ARG_INT,  &lock_range,0,      "locking range", NULL},
 556                 {"lockbase",      0, POPT_ARG_INT,  &lock_base, 0,      "locking base", NULL},
 557                 {"minlength",     0, POPT_ARG_INT,  &min_length,0,      "min lock length", NULL},
 558                 {"hidefails",     0, POPT_ARG_NONE, &hide_unlock_fails,0,"hide unlock fails", NULL},
 559                 {"oplocks",       0, POPT_ARG_NONE, &use_oplocks,0,      "use oplocks", NULL},
 560                 {"showall",       0, POPT_ARG_NONE, &showall,    0,      "display all operations", NULL},
 561                 {"analyse",       0, POPT_ARG_NONE, &analyze,    0,      "do backtrack analysis", NULL},
 562                 {"zerozero",      0, POPT_ARG_NONE, &zero_zero,    0,      "do zero/zero lock", NULL},
 563                 {"exacterrors",   0, POPT_ARG_NONE, &exact_error_codes,0,"use exact error codes", NULL},
 564                 {"unclist",       0, POPT_ARG_STRING,   NULL,   OPT_UNCLIST,    "unclist",      NULL},
 565                 { "user", 'U',       POPT_ARG_STRING, NULL, 'U', "Set the network username", "[DOMAIN/]USERNAME[%PASSWORD]" },
 566                 POPT_COMMON_SAMBA
 567                 POPT_COMMON_CONNECTION
 568                 POPT_COMMON_CREDENTIALS
 569                 POPT_COMMON_VERSION
 570                 { NULL }
 571         };
 572
 573         setlinebuf(stdout);
 574         seed = time(NULL);
 575
 576         pc = poptGetContext("locktest", argc, (const char **) argv, long_options,
 577                             POPT_CONTEXT_KEEP_FIRST);
 578
 579         poptSetOtherOptionHelp(pc, "<unc1> <unc2>");
 580
 581         lp_ctx = cmdline_lp_ctx;
 582         servers[0] = cli_credentials_init(talloc_autofree_context());
 583         servers[1] = cli_credentials_init(talloc_autofree_context());
 584         cli_credentials_guess(servers[0], lp_ctx);
 585         cli_credentials_guess(servers[1], lp_ctx);
 586
 587         while((opt = poptGetNextOpt(pc)) != -1) {
 588                 switch (opt) {
 589                 case OPT_UNCLIST:
 590                         lp_set_cmdline(cmdline_lp_ctx, "torture:unclist", poptGetOptArg(pc));
 591                         break;
 592                 case 'U':
 593                         if (username_count == 2) {
 594                                 usage(pc);
 595                                 exit(1);
 596                         }
 597                         cli_credentials_parse_string(servers[username_count], poptGetOptArg(pc), CRED_SPECIFIED);
 598                         username_count++;
 599                         break;
 600                 }
 601         }
 602
 603         argv_new = discard_const_p(char *, poptGetArgs(pc));
 604         argc_new = argc;
 605         for (i=0; i<argc; i++) {
 606                 if (argv_new[i] == NULL) {
 607                         argc_new = i;
 608                         break;
 609                 }
 610         }
 611
 612         if (!(argc_new >= 3)) {
 613                 usage(pc);
 614                 exit(1);
 615         }
 616
 617         setup_logging("locktest", DEBUG_STDOUT);
 618
 619         for (server=0;server<NSERVERS;server++) {
 620                 share[server] = argv_new[1+server];
 621                 all_string_sub(share[server],"/","\\",0);
 622         }
 623
 624         lp_ctx = cmdline_lp_ctx;
 625
 626         if (username_count == 0) {
 627                 usage(pc);
 628                 return -1;
 629         }
 630         if (username_count == 1) {
 631                 servers[1] = servers[0];
 632         }
 633
 634         gensec_init(lp_ctx);
 635
 636         DEBUG(0,("seed=%u base=%d range=%d min_length=%d\n",
 637                  seed, lock_base, lock_range, min_length));
 638         srandom(seed);
 639
 640         return test_locks(lp_ctx, share);
 641 }
 642