source3/registry/reg_perfcount.c

   1 /*
   2  *  Unix SMB/CIFS implementation.
   3  *  Virtual Windows Registry Layer
   4  *
   5  *  Copyright (C) Marcin Krzysztof Porwit    2005,
   6  *  Copyright (C) Gerald (Jerry) Carter      2005.
   7  *
   8  *  This program is free software; you can redistribute it and/or modify
   9  *  it under the terms of the GNU General Public License as published by
  10  *  the Free Software Foundation; either version 3 of the License, or
  11  *  (at your option) any later version.
  12  *
  13  *  This program is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *  GNU General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU General Public License
  19  *  along with this program; if not, see <http://www.gnu.org/licenses/>.
  20  */
  21
  22 #include "includes.h"
  23
  24 #undef DBGC_CLASS
  25 #define DBGC_CLASS DBGC_REGISTRY
  26
  27 #define PERFCOUNT_MAX_LEN 256
  28
  29 #define PERFCOUNTDIR    "perfmon"
  30 #define NAMES_DB        "names.tdb"
  31 #define DATA_DB         "data.tdb"
  32
  33 PERF_OBJECT_TYPE *_reg_perfcount_find_obj(PERF_DATA_BLOCK *block, int objind);
  34
  35 /*********************************************************************
  36 *********************************************************************/
  37
  38 static char *counters_directory(const char *dbname)
  39 {
  40         char *path = NULL;
  41         char *ret = NULL;
  42         TALLOC_CTX *ctx = talloc_tos();
  43
  44         path = talloc_asprintf(ctx, "%s/%s", PERFCOUNTDIR, dbname);
  45         if (!path) {
  46                 return NULL;
  47         }
  48
  49         ret = talloc_strdup(ctx, state_path(path));
  50         TALLOC_FREE(path);
  51         return ret;
  52 }
  53
  54 /*********************************************************************
  55 *********************************************************************/
  56
  57 void perfcount_init_keys( void )
  58 {
  59         char *p = state_path(PERFCOUNTDIR);
  60
  61         /* no registry keys; just create the perfmon directory */
  62
  63         if ( !directory_exist( p ) )
  64                 mkdir( p, 0755 );
  65
  66         return;
  67 }
  68
  69 /*********************************************************************
  70 *********************************************************************/
  71
  72 uint32 reg_perfcount_get_base_index(void)
  73 {
  74         const char *fname = counters_directory( NAMES_DB );
  75         TDB_CONTEXT *names;
  76         TDB_DATA kbuf, dbuf;
  77         char key[] = "1";
  78         uint32 retval = 0;
  79         char buf[PERFCOUNT_MAX_LEN];
  80
  81         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
  82
  83         if ( !names ) {
  84                 DEBUG(1, ("reg_perfcount_get_base_index: unable to open [%s].\n", fname));
  85                 return 0;
  86         }
  87         /* needs to read the value of key "1" from the counter_names.tdb file, as that is
  88            where the total number of counters is stored. We're assuming no holes in the
  89            enumeration.
  90            The format for the counter_names.tdb file is:
  91            key        value
  92            1          num_counters
  93            2          perf_counter1
  94            3          perf_counter1_help
  95            4          perf_counter2
  96            5          perf_counter2_help
  97            even_num   perf_counter<even_num>
  98            even_num+1 perf_counter<even_num>_help
  99            and so on.
 100            So last_counter becomes num_counters*2, and last_help will be last_counter+1 */
 101         kbuf = string_tdb_data(key);
 102         dbuf = tdb_fetch(names, kbuf);
 103         if(dbuf.dptr == NULL)
 104         {
 105                 DEBUG(1, ("reg_perfcount_get_base_index: failed to find key \'1\' in [%s].\n", fname));
 106                 tdb_close(names);
 107                 return 0;
 108         }
 109         else
 110         {
 111                 tdb_close(names);
 112                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 113                 memcpy(buf, dbuf.dptr, dbuf.dsize);
 114                 retval = (uint32)atoi(buf);
 115                 SAFE_FREE(dbuf.dptr);
 116                 return retval;
 117         }
 118         return 0;
 119 }
 120
 121 /*********************************************************************
 122 *********************************************************************/
 123
 124 uint32 reg_perfcount_get_last_counter(uint32 base_index)
 125 {
 126         uint32 retval;
 127
 128         if(base_index == 0)
 129                 retval = 0;
 130         else
 131                 retval = base_index * 2;
 132
 133         return retval;
 134 }
 135
 136 /*********************************************************************
 137 *********************************************************************/
 138
 139 uint32 reg_perfcount_get_last_help(uint32 last_counter)
 140 {
 141         uint32 retval;
 142
 143         if(last_counter == 0)
 144                 retval = 0;
 145         else
 146                 retval = last_counter + 1;
 147
 148         return retval;
 149 }
 150
 151
 152 /*********************************************************************
 153 *********************************************************************/
 154
 155 static uint32 _reg_perfcount_multi_sz_from_tdb(TDB_CONTEXT *tdb,
 156                                                int keyval,
 157                                                char **retbuf,
 158                                                uint32 buffer_size)
 159 {
 160         TDB_DATA kbuf, dbuf;
 161         char temp[256];
 162         char *buf1 = *retbuf;
 163         uint32 working_size = 0;
 164         UNISTR2 name_index, name;
 165
 166         memset(temp, 0, sizeof(temp));
 167         snprintf(temp, sizeof(temp), "%d", keyval);
 168         kbuf = string_tdb_data(temp);
 169         dbuf = tdb_fetch(tdb, kbuf);
 170         if(dbuf.dptr == NULL)
 171         {
 172                 /* If a key isn't there, just bypass it -- this really shouldn't
 173                    happen unless someone's mucking around with the tdb */
 174                 DEBUG(3, ("_reg_perfcount_multi_sz_from_tdb: failed to find key [%s] in [%s].\n",
 175                           temp, tdb_name(tdb)));
 176                 return buffer_size;
 177         }
 178         /* First encode the name_index */
 179         working_size = (kbuf.dsize + 1)*sizeof(uint16);
 180         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + working_size);
 181         if(!buf1) {
 182                 buffer_size = 0;
 183                 return buffer_size;
 184         }
 185         init_unistr2(&name_index, (const char *)kbuf.dptr, UNI_STR_TERMINATE);
 186         memcpy(buf1+buffer_size, (char *)name_index.buffer, working_size);
 187         buffer_size += working_size;
 188         /* Now encode the actual name */
 189         working_size = (dbuf.dsize + 1)*sizeof(uint16);
 190         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + working_size);
 191         if(!buf1) {
 192                 buffer_size = 0;
 193                 return buffer_size;
 194         }
 195         memset(temp, 0, sizeof(temp));
 196         memcpy(temp, dbuf.dptr, dbuf.dsize);
 197         SAFE_FREE(dbuf.dptr);
 198         init_unistr2(&name, temp, UNI_STR_TERMINATE);
 199         memcpy(buf1+buffer_size, (char *)name.buffer, working_size);
 200         buffer_size += working_size;
 201
 202         *retbuf = buf1;
 203
 204         return buffer_size;
 205 }
 206
 207 /*********************************************************************
 208 *********************************************************************/
 209
 210 uint32 reg_perfcount_get_counter_help(uint32 base_index, char **retbuf)
 211 {
 212         char *buf1 = NULL;
 213         uint32 buffer_size = 0;
 214         TDB_CONTEXT *names;
 215         const char *fname = counters_directory( NAMES_DB );
 216         int i;
 217
 218         if(base_index == 0)
 219                 return 0;
 220
 221         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 222
 223         if(names == NULL)
 224         {
 225                 DEBUG(1, ("reg_perfcount_get_counter_help: unable to open [%s].\n", fname));
 226                 return 0;
 227         }
 228
 229         for(i = 1; i <= base_index; i++)
 230         {
 231                 buffer_size = _reg_perfcount_multi_sz_from_tdb(names, (i*2)+1, retbuf, buffer_size);
 232         }
 233         tdb_close(names);
 234
 235         /* Now terminate the MULTI_SZ with a double unicode NULL */
 236         buf1 = *retbuf;
 237         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + 2);
 238         if(!buf1) {
 239                 buffer_size = 0;
 240         } else {
 241                 buf1[buffer_size++] = '\0';
 242                 buf1[buffer_size++] = '\0';
 243         }
 244
 245         *retbuf = buf1;
 246
 247         return buffer_size;
 248 }
 249
 250 /*********************************************************************
 251 *********************************************************************/
 252
 253 uint32 reg_perfcount_get_counter_names(uint32 base_index, char **retbuf)
 254 {
 255         char *buf1 = NULL;
 256         uint32 buffer_size = 0;
 257         TDB_CONTEXT *names;
 258         const char *fname = counters_directory( NAMES_DB );
 259         int i;
 260
 261         if(base_index == 0)
 262                 return 0;
 263
 264         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 265
 266         if(names == NULL)
 267         {
 268                 DEBUG(1, ("reg_perfcount_get_counter_names: unable to open [%s].\n", fname));
 269                 return 0;
 270         }
 271
 272         buffer_size = _reg_perfcount_multi_sz_from_tdb(names, 1, retbuf, buffer_size);
 273
 274         for(i = 1; i <= base_index; i++)
 275         {
 276                 buffer_size = _reg_perfcount_multi_sz_from_tdb(names, i*2, retbuf, buffer_size);
 277         }
 278         tdb_close(names);
 279
 280         /* Now terminate the MULTI_SZ with a double unicode NULL */
 281         buf1 = *retbuf;
 282         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + 2);
 283         if(!buf1) {
 284                 buffer_size = 0;
 285         } else {
 286                 buf1[buffer_size++] = '\0';
 287                 buf1[buffer_size++] = '\0';
 288         }
 289
 290         *retbuf=buf1;
 291
 292         return buffer_size;
 293 }
 294
 295 /*********************************************************************
 296 *********************************************************************/
 297
 298 static void _reg_perfcount_make_key(TDB_DATA *key,
 299                                     char *buf,
 300                                     int buflen,
 301                                     int key_part1,
 302                                     const char *key_part2)
 303 {
 304         memset(buf, 0, buflen);
 305         if(key_part2 != NULL)
 306                 snprintf(buf, buflen,"%d%s", key_part1, key_part2);
 307         else
 308                 snprintf(buf, buflen, "%d", key_part1);
 309
 310         *key = string_tdb_data(buf);
 311
 312         return;
 313 }
 314
 315 /*********************************************************************
 316 *********************************************************************/
 317
 318 static bool _reg_perfcount_isparent(TDB_DATA data)
 319 {
 320         if(data.dsize > 0)
 321         {
 322                 if(data.dptr[0] == 'p')
 323                         return True;
 324                 else
 325                         return False;
 326         }
 327         return False;
 328 }
 329
 330 /*********************************************************************
 331 *********************************************************************/
 332
 333 static bool _reg_perfcount_ischild(TDB_DATA data)
 334 {
 335         if(data.dsize > 0)
 336         {
 337                 if(data.dptr[0] == 'c')
 338                         return True;
 339                 else
 340                         return False;
 341         }
 342         return False;
 343 }
 344
 345 /*********************************************************************
 346 *********************************************************************/
 347
 348 static uint32 _reg_perfcount_get_numinst(int objInd, TDB_CONTEXT *names)
 349 {
 350         TDB_DATA key, data;
 351         char buf[PERFCOUNT_MAX_LEN];
 352
 353         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, objInd, "inst");
 354         data = tdb_fetch(names, key);
 355
 356         if(data.dptr == NULL)
 357                 return (uint32)PERF_NO_INSTANCES;
 358
 359         memset(buf, 0, PERFCOUNT_MAX_LEN);
 360         memcpy(buf, data.dptr, data.dsize);
 361         SAFE_FREE(data.dptr);
 362         return (uint32)atoi(buf);
 363 }
 364
 365 /*********************************************************************
 366 *********************************************************************/
 367
 368 static bool _reg_perfcount_add_object(PERF_DATA_BLOCK *block,
 369                                       prs_struct *ps,
 370                                       int num,
 371                                       TDB_DATA data,
 372                                       TDB_CONTEXT *names)
 373 {
 374         int i;
 375         bool success = True;
 376         PERF_OBJECT_TYPE *obj;
 377
 378         block->objects = (PERF_OBJECT_TYPE *)TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 379                                                                   block->objects,
 380                                                                   PERF_OBJECT_TYPE,
 381                                                                   block->NumObjectTypes+1);
 382         if(block->objects == NULL)
 383                 return False;
 384         obj = &(block->objects[block->NumObjectTypes]);
 385         memset((void *)&(block->objects[block->NumObjectTypes]), 0, sizeof(PERF_OBJECT_TYPE));
 386         block->objects[block->NumObjectTypes].ObjectNameTitleIndex = num;
 387         block->objects[block->NumObjectTypes].ObjectNameTitlePointer = 0;
 388         block->objects[block->NumObjectTypes].ObjectHelpTitleIndex = num+1;
 389         block->objects[block->NumObjectTypes].ObjectHelpTitlePointer = 0;
 390         block->objects[block->NumObjectTypes].NumCounters = 0;
 391         block->objects[block->NumObjectTypes].DefaultCounter = 0;
 392         block->objects[block->NumObjectTypes].NumInstances = _reg_perfcount_get_numinst(num, names);
 393         block->objects[block->NumObjectTypes].counters = NULL;
 394         block->objects[block->NumObjectTypes].instances = NULL;
 395         block->objects[block->NumObjectTypes].counter_data.ByteLength = sizeof(uint32);
 396         block->objects[block->NumObjectTypes].counter_data.data = NULL;
 397         block->objects[block->NumObjectTypes].DetailLevel = PERF_DETAIL_NOVICE;
 398         block->NumObjectTypes+=1;
 399
 400         for(i = 0; i < (int)obj->NumInstances; i++) {
 401                 success = _reg_perfcount_add_instance(obj, ps, i, names);
 402         }
 403
 404         return success;
 405 }
 406
 407 /*********************************************************************
 408 *********************************************************************/
 409
 410 bool _reg_perfcount_get_counter_data(TDB_DATA key, TDB_DATA *data)
 411 {
 412         TDB_CONTEXT *counters;
 413         const char *fname = counters_directory( DATA_DB );
 414
 415         counters = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 416
 417         if(counters == NULL)
 418         {
 419                 DEBUG(1, ("reg_perfcount_get_counter_data: unable to open [%s].\n", fname));
 420                 return False;
 421         }
 422
 423         *data = tdb_fetch(counters, key);
 424
 425         tdb_close(counters);
 426
 427         return True;
 428 }
 429
 430 /*********************************************************************
 431 *********************************************************************/
 432
 433 static uint32 _reg_perfcount_get_size_field(uint32 CounterType)
 434 {
 435         uint32 retval;
 436
 437         retval = CounterType;
 438
 439         /* First mask out reserved lower 8 bits */
 440         retval = retval & 0xFFFFFF00;
 441         retval = retval << 22;
 442         retval = retval >> 22;
 443
 444         return retval;
 445 }
 446
 447 /*********************************************************************
 448 *********************************************************************/
 449
 450 static uint32 _reg_perfcount_compute_scale(int64_t data)
 451 {
 452         int scale = 0;
 453         if(data == 0)
 454                 return scale;
 455         while(data > 100)
 456         {
 457                 data /= 10;
 458                 scale--;
 459         }
 460         while(data < 10)
 461         {
 462                 data *= 10;
 463                 scale++;
 464         }
 465
 466         return (uint32)scale;
 467 }
 468
 469 /*********************************************************************
 470 *********************************************************************/
 471
 472 static bool _reg_perfcount_get_counter_info(PERF_DATA_BLOCK *block,
 473                                             prs_struct *ps,
 474                                             int CounterIndex,
 475                                             PERF_OBJECT_TYPE *obj,
 476                                             TDB_CONTEXT *names)
 477 {
 478         TDB_DATA key, data;
 479         char buf[PERFCOUNT_MAX_LEN];
 480         size_t dsize, padding;
 481         long int data32, dbuf[2];
 482         int64_t data64;
 483         uint32 counter_size;
 484
 485         obj->counters[obj->NumCounters].DefaultScale = 0;
 486         dbuf[0] = dbuf[1] = 0;
 487         padding = 0;
 488
 489         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, CounterIndex, "type");
 490         data = tdb_fetch(names, key);
 491         if(data.dptr == NULL)
 492         {
 493                 DEBUG(3, ("_reg_perfcount_get_counter_info: No type data for counter [%d].\n", CounterIndex));
 494                 return False;
 495         }
 496         memset(buf, 0, PERFCOUNT_MAX_LEN);
 497         memcpy(buf, data.dptr, data.dsize);
 498         obj->counters[obj->NumCounters].CounterType = atoi(buf);
 499         DEBUG(10, ("_reg_perfcount_get_counter_info: Got type [%d] for counter [%d].\n",
 500                    obj->counters[obj->NumCounters].CounterType, CounterIndex));
 501         SAFE_FREE(data.dptr);
 502
 503         /* Fetch the actual data */
 504         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, CounterIndex, "");
 505         _reg_perfcount_get_counter_data(key, &data);
 506         if(data.dptr == NULL)
 507         {
 508                 DEBUG(3, ("_reg_perfcount_get_counter_info: No counter data for counter [%d].\n", CounterIndex));
 509                 return False;
 510         }
 511
 512         counter_size = _reg_perfcount_get_size_field(obj->counters[obj->NumCounters].CounterType);
 513
 514         if(counter_size == PERF_SIZE_DWORD)
 515         {
 516                 dsize = sizeof(data32);
 517                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 518                 memcpy(buf, data.dptr, data.dsize);
 519                 data32 = strtol(buf, NULL, 0);
 520                 if((obj->counters[obj->NumCounters].CounterType & 0x00000F00) == PERF_TYPE_NUMBER)
 521                         obj->counters[obj->NumCounters].DefaultScale = _reg_perfcount_compute_scale((int64_t)data32);
 522                 else
 523                         obj->counters[obj->NumCounters].DefaultScale = 0;
 524                 dbuf[0] = data32;
 525                 padding = (dsize - (obj->counter_data.ByteLength%dsize)) % dsize;
 526         }
 527         else if(counter_size == PERF_SIZE_LARGE)
 528         {
 529                 dsize = sizeof(data64);
 530                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 531                 memcpy(buf, data.dptr, data.dsize);
 532                 data64 = atof(buf);
 533                 if((obj->counters[obj->NumCounters].CounterType & 0x00000F00) == PERF_TYPE_NUMBER)
 534                         obj->counters[obj->NumCounters].DefaultScale = _reg_perfcount_compute_scale(data64);
 535                 else
 536                         obj->counters[obj->NumCounters].DefaultScale = 0;
 537                 memcpy((void *)dbuf, (const void *)&data64, dsize);
 538                 padding = (dsize - (obj->counter_data.ByteLength%dsize)) % dsize;
 539         }
 540         else /* PERF_SIZE_VARIABLE_LEN */
 541         {
 542                 dsize = data.dsize;
 543                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 544                 memcpy(buf, data.dptr, data.dsize);
 545         }
 546         SAFE_FREE(data.dptr);
 547
 548         obj->counter_data.ByteLength += dsize + padding;
 549         obj->counter_data.data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 550                                                       obj->counter_data.data,
 551                                                       uint8,
 552                                                       obj->counter_data.ByteLength - sizeof(uint32));
 553         if(obj->counter_data.data == NULL)
 554                 return False;
 555         if(dbuf[0] != 0 || dbuf[1] != 0)
 556         {
 557                 memcpy((void *)(obj->counter_data.data +
 558                                 (obj->counter_data.ByteLength - (sizeof(uint32) + dsize))),
 559                        (const void *)dbuf, dsize);
 560         }
 561         else
 562         {
 563                 /* Handling PERF_SIZE_VARIABLE_LEN */
 564                 memcpy((void *)(obj->counter_data.data +
 565                                 (obj->counter_data.ByteLength - (sizeof(uint32) + dsize))),
 566                        (const void *)buf, dsize);
 567         }
 568         obj->counters[obj->NumCounters].CounterOffset = obj->counter_data.ByteLength - dsize;
 569         if(obj->counters[obj->NumCounters].CounterOffset % dsize != 0)
 570         {
 571                 DEBUG(3,("Improperly aligned counter [%d]\n", obj->NumCounters));
 572         }
 573         obj->counters[obj->NumCounters].CounterSize = dsize;
 574
 575         return True;
 576 }
 577
 578 /*********************************************************************
 579 *********************************************************************/
 580
 581 PERF_OBJECT_TYPE *_reg_perfcount_find_obj(PERF_DATA_BLOCK *block, int objind)
 582 {
 583         int i;
 584
 585         PERF_OBJECT_TYPE *obj = NULL;
 586
 587         for(i = 0; i < block->NumObjectTypes; i++)
 588         {
 589                 if(block->objects[i].ObjectNameTitleIndex == objind)
 590                 {
 591                         obj = &(block->objects[i]);
 592                 }
 593         }
 594
 595         return obj;
 596 }
 597
 598 /*********************************************************************
 599 *********************************************************************/
 600
 601 static bool _reg_perfcount_add_counter(PERF_DATA_BLOCK *block,
 602                                        prs_struct *ps,
 603                                        int num,
 604                                        TDB_DATA data,
 605                                        TDB_CONTEXT *names)
 606 {
 607         char *begin, *end, *start, *stop;
 608         int parent;
 609         PERF_OBJECT_TYPE *obj;
 610         bool success = True;
 611         char buf[PERFCOUNT_MAX_LEN];
 612
 613         obj = NULL;
 614         memset(buf, 0, PERFCOUNT_MAX_LEN);
 615         memcpy(buf, data.dptr, data.dsize);
 616         begin = index(buf, '[');
 617         end = index(buf, ']');
 618         if(begin == NULL || end == NULL)
 619                 return False;
 620         start = begin+1;
 621
 622         while(start < end) {
 623                 stop = index(start, ',');
 624                 if(stop == NULL)
 625                         stop = end;
 626                 *stop = '\0';
 627                 parent = atoi(start);
 628
 629                 obj = _reg_perfcount_find_obj(block, parent);
 630                 if(obj == NULL) {
 631                         /* At this point we require that the parent object exist.
 632                            This can probably be handled better at some later time */
 633                         DEBUG(3, ("_reg_perfcount_add_counter: Could not find parent object [%d] for counter [%d].\n",
 634                                   parent, num));
 635                         return False;
 636                 }
 637                 obj->counters = (PERF_COUNTER_DEFINITION *)TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 638                                                                                 obj->counters,
 639                                                                                 PERF_COUNTER_DEFINITION,
 640                                                                                 obj->NumCounters+1);
 641                 if(obj->counters == NULL)
 642                         return False;
 643                 memset((void *)&(obj->counters[obj->NumCounters]), 0, sizeof(PERF_COUNTER_DEFINITION));
 644                 obj->counters[obj->NumCounters].CounterNameTitleIndex=num;
 645                 obj->counters[obj->NumCounters].CounterHelpTitleIndex=num+1;
 646                 obj->counters[obj->NumCounters].DetailLevel = PERF_DETAIL_NOVICE;
 647                 obj->counters[obj->NumCounters].ByteLength = sizeof(PERF_COUNTER_DEFINITION);
 648                 success = _reg_perfcount_get_counter_info(block, ps, num, obj, names);
 649                 obj->NumCounters += 1;
 650                 start = stop + 1;
 651         }
 652
 653         /* Handle case of Objects/Counters without any counter data, which would suggest
 654            that the required instances are not there yet, so change NumInstances from
 655            PERF_NO_INSTANCES to 0 */
 656
 657         return success;
 658 }
 659
 660 /*********************************************************************
 661 *********************************************************************/
 662
 663 bool _reg_perfcount_get_instance_info(PERF_INSTANCE_DEFINITION *inst,
 664                                       prs_struct *ps,
 665                                       int instId,
 666                                       PERF_OBJECT_TYPE *obj,
 667                                       TDB_CONTEXT *names)
 668 {
 669         TDB_DATA key, data;
 670         char buf[PERFCOUNT_MAX_LEN], temp[PERFCOUNT_MAX_LEN];
 671         smb_ucs2_t *name = NULL;
 672         int pad;
 673
 674         /* First grab the instance data from the data file */
 675         memset(temp, 0, PERFCOUNT_MAX_LEN);
 676         snprintf(temp, PERFCOUNT_MAX_LEN, "i%d", instId);
 677         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, obj->ObjectNameTitleIndex, temp);
 678         if (!_reg_perfcount_get_counter_data(key, &data)) {
 679                 DEBUG(3, ("_reg_perfcount_get_counter_data failed\n"));
 680                 return false;
 681         }
 682         if(data.dptr == NULL)
 683         {
 684                 DEBUG(3, ("_reg_perfcount_get_instance_info: No instance data for instance [%s].\n",
 685                           buf));
 686                 return False;
 687         }
 688         inst->counter_data.ByteLength = data.dsize + sizeof(inst->counter_data.ByteLength);
 689         inst->counter_data.data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 690                                                        inst->counter_data.data,
 691                                                        uint8,
 692                                                        data.dsize);
 693         if(inst->counter_data.data == NULL)
 694                 return False;
 695         memset(inst->counter_data.data, 0, data.dsize);
 696         memcpy(inst->counter_data.data, data.dptr, data.dsize);
 697         SAFE_FREE(data.dptr);
 698
 699         /* Fetch instance name */
 700         memset(temp, 0, PERFCOUNT_MAX_LEN);
 701         snprintf(temp, PERFCOUNT_MAX_LEN, "i%dname", instId);
 702         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, obj->ObjectNameTitleIndex, temp);
 703         data = tdb_fetch(names, key);
 704         if(data.dptr == NULL)
 705         {
 706                 /* Not actually an error, but possibly unintended? -- just logging FYI */
 707                 DEBUG(3, ("_reg_perfcount_get_instance_info: No instance name for instance [%s].\n",
 708                           buf));
 709                 inst->NameLength = 0;
 710         }
 711         else
 712         {
 713                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 714                 memcpy(buf, data.dptr, MIN(PERFCOUNT_MAX_LEN-1,data.dsize));
 715                 buf[PERFCOUNT_MAX_LEN-1] = '\0';
 716                 inst->NameLength = rpcstr_push_talloc(ps->mem_ctx, &name, buf);
 717                 if (inst->NameLength == (uint32_t)-1 || !name) {
 718                         SAFE_FREE(data.dptr);
 719                         return False;
 720                 }
 721                 inst->data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 722                                                   inst->data,
 723                                                   uint8,
 724                                                   inst->NameLength);
 725                 if (inst->data == NULL) {
 726                         SAFE_FREE(data.dptr);
 727                         return False;
 728                 }
 729                 memcpy(inst->data, name, inst->NameLength);
 730                 SAFE_FREE(data.dptr);
 731         }
 732
 733         inst->ParentObjectTitleIndex = 0;
 734         inst->ParentObjectTitlePointer = 0;
 735         inst->UniqueID = PERF_NO_UNIQUE_ID;
 736         inst->NameOffset = 6 * sizeof(uint32);
 737
 738         inst->ByteLength = inst->NameOffset + inst->NameLength;
 739         /* Need to be aligned on a 64-bit boundary here for counter_data */
 740         if((pad = (inst->ByteLength % 8)))
 741         {
 742                 pad = 8 - pad;
 743                 inst->data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 744                                                   inst->data,
 745                                                   uint8,
 746                                                   inst->NameLength + pad);
 747                 memset(inst->data + inst->NameLength, 0, pad);
 748                 inst->ByteLength += pad;
 749         }
 750
 751         return True;
 752 }
 753
 754 /*********************************************************************
 755 *********************************************************************/
 756
 757 bool _reg_perfcount_add_instance(PERF_OBJECT_TYPE *obj,
 758                                  prs_struct *ps,
 759                                  int instInd,
 760                                  TDB_CONTEXT *names)
 761 {
 762         PERF_INSTANCE_DEFINITION *inst;
 763
 764         if(obj->instances == NULL) {
 765                 obj->instances = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 766                                                       obj->instances,
 767                                                       PERF_INSTANCE_DEFINITION,
 768                                                       obj->NumInstances);
 769         }
 770         if(obj->instances == NULL)
 771                 return False;
 772
 773         memset(&(obj->instances[instInd]), 0, sizeof(PERF_INSTANCE_DEFINITION));
 774         inst = &(obj->instances[instInd]);
 775         return _reg_perfcount_get_instance_info(inst, ps, instInd, obj, names);
 776 }
 777
 778 /*********************************************************************
 779 *********************************************************************/
 780
 781 static int _reg_perfcount_assemble_global(PERF_DATA_BLOCK *block,
 782                                           prs_struct *ps,
 783                                           int base_index,
 784                                           TDB_CONTEXT *names)
 785 {
 786         bool success;
 787         int i, j, retval = 0;
 788         char keybuf[PERFCOUNT_MAX_LEN];
 789         TDB_DATA key, data;
 790
 791         for(i = 1; i <= base_index; i++)
 792         {
 793                 j = i*2;
 794                 _reg_perfcount_make_key(&key, keybuf, PERFCOUNT_MAX_LEN, j, "rel");
 795                 data = tdb_fetch(names, key);
 796                 if(data.dptr != NULL)
 797                 {
 798                         if(_reg_perfcount_isparent(data))
 799                                 success = _reg_perfcount_add_object(block, ps, j, data, names);
 800                         else if(_reg_perfcount_ischild(data))
 801                                 success = _reg_perfcount_add_counter(block, ps, j, data, names);
 802                         else
 803                         {
 804                                 DEBUG(3, ("Bogus relationship [%s] for counter [%d].\n", data.dptr, j));
 805                                 success = False;
 806                         }
 807                         if(success == False)
 808                         {
 809                                 DEBUG(3, ("_reg_perfcount_assemble_global: Failed to add new relationship for counter [%d].\n", j));
 810                                 retval = -1;
 811                         }
 812                         SAFE_FREE(data.dptr);
 813                 }
 814                 else
 815                         DEBUG(3, ("NULL relationship for counter [%d] using key [%s].\n", j, keybuf));
 816         }
 817         return retval;
 818 }
 819
 820 /*********************************************************************
 821 *********************************************************************/
 822
 823 static bool _reg_perfcount_get_64(uint64_t *retval,
 824                                   TDB_CONTEXT *tdb,
 825                                   int key_part1,
 826                                   const char *key_part2)
 827 {
 828         TDB_DATA key, data;
 829         char buf[PERFCOUNT_MAX_LEN];
 830
 831         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, key_part1, key_part2);
 832
 833         data = tdb_fetch(tdb, key);
 834         if(data.dptr == NULL)
 835         {
 836                 DEBUG(3,("_reg_perfcount_get_64: No data found for key [%s].\n", key.dptr));
 837                 return False;
 838         }
 839
 840         memset(buf, 0, PERFCOUNT_MAX_LEN);
 841         memcpy(buf, data.dptr, data.dsize);
 842         SAFE_FREE(data.dptr);
 843
 844         *retval = atof(buf);
 845
 846         return True;
 847 }
 848
 849 /*********************************************************************
 850 *********************************************************************/
 851
 852 static bool _reg_perfcount_init_data_block_perf(PERF_DATA_BLOCK *block,
 853                                                 TDB_CONTEXT *names)
 854 {
 855         uint64_t PerfFreq, PerfTime, PerfTime100nSec;
 856         TDB_CONTEXT *counters;
 857         bool status = False;
 858         const char *fname = counters_directory( DATA_DB );
 859
 860         counters = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 861
 862         if(counters == NULL)
 863         {
 864                 DEBUG(1, ("reg_perfcount_init_data_block_perf: unable to open [%s].\n", fname));
 865                 return False;
 866         }
 867
 868         status = _reg_perfcount_get_64(&PerfFreq, names, 0, "PerfFreq");
 869         if(status == False)
 870         {
 871                 tdb_close(counters);
 872                 return status;
 873         }
 874         memcpy((void *)&(block->PerfFreq), (const void *)&PerfFreq, sizeof(PerfFreq));
 875
 876         status = _reg_perfcount_get_64(&PerfTime, counters, 0, "PerfTime");
 877         if(status == False)
 878         {
 879                 tdb_close(counters);
 880                 return status;
 881         }
 882         memcpy((void *)&(block->PerfTime), (const void *)&PerfTime, sizeof(PerfTime));
 883
 884         status = _reg_perfcount_get_64(&PerfTime100nSec, counters, 0, "PerfTime100nSec");
 885         if(status == False)
 886         {
 887                 tdb_close(counters);
 888                 return status;
 889         }
 890         memcpy((void *)&(block->PerfTime100nSec), (const void *)&PerfTime100nSec, sizeof(PerfTime100nSec));
 891
 892         tdb_close(counters);
 893         return True;
 894 }
 895
 896 /*********************************************************************
 897 *********************************************************************/
 898
 899 static bool _reg_perfcount_init_data_block(PERF_DATA_BLOCK *block,
 900                                            prs_struct *ps, TDB_CONTEXT *names)
 901 {
 902         smb_ucs2_t *temp = NULL;
 903         time_t tm;
 904
 905         if (rpcstr_push_talloc(ps->mem_ctx, &temp, "PERF")==(size_t)-1) {
 906                 return false;
 907         }
 908         if (!temp) {
 909                 return false;
 910         }
 911         memcpy(block->Signature, temp, strlen_w(temp) *2);
 912
 913         if(ps->bigendian_data == RPC_BIG_ENDIAN)
 914                 block->LittleEndian = 0;
 915         else
 916                 block->LittleEndian = 1;
 917         block->Version = 1;
 918         block->Revision = 1;
 919         block->TotalByteLength = 0;
 920         block->NumObjectTypes = 0;
 921         block->DefaultObject = -1;
 922         block->objects = NULL;
 923         tm = time(NULL);
 924         make_systemtime(&(block->SystemTime), gmtime(&tm));
 925         _reg_perfcount_init_data_block_perf(block, names);
 926         memset(temp, 0, sizeof(temp));
 927         rpcstr_push((void *)temp, global_myname(), sizeof(temp), STR_TERMINATE);
 928         block->SystemNameLength = (strlen_w(temp) * 2) + 2;
 929         block->data = TALLOC_ZERO_ARRAY(ps->mem_ctx, uint8, block->SystemNameLength + (8 - (block->SystemNameLength % 8)));
 930         if (block->data == NULL) {
 931                 return False;
 932         }
 933         memcpy(block->data, temp, block->SystemNameLength);
 934         block->SystemNameOffset = sizeof(PERF_DATA_BLOCK) - sizeof(block->objects) - sizeof(block->data);
 935         block->HeaderLength = block->SystemNameOffset + block->SystemNameLength;
 936         /* Make sure to adjust for 64-bit alignment for when we finish writing the system name,
 937            so that the PERF_OBJECT_TYPE struct comes out 64-bit aligned */
 938         block->HeaderLength += 8 - (block->HeaderLength % 8);
 939
 940         return True;
 941 }
 942
 943 /*********************************************************************
 944 *********************************************************************/
 945
 946 static uint32 _reg_perfcount_perf_data_block_fixup(PERF_DATA_BLOCK *block, prs_struct *ps)
 947 {
 948         int obj, cnt, inst, pad, i;
 949         PERF_OBJECT_TYPE *object;
 950         PERF_INSTANCE_DEFINITION *instance;
 951         PERF_COUNTER_DEFINITION *counter;
 952         PERF_COUNTER_BLOCK *counter_data;
 953         char *temp = NULL, *src_addr, *dst_addr;
 954
 955         block->TotalByteLength = 0;
 956         object = block->objects;
 957         for(obj = 0; obj < block->NumObjectTypes; obj++)
 958         {
 959                 object[obj].TotalByteLength = 0;
 960                 object[obj].DefinitionLength = 0;
 961                 instance = object[obj].instances;
 962                 counter = object[obj].counters;
 963                 for(cnt = 0; cnt < object[obj].NumCounters; cnt++)
 964                 {
 965                         object[obj].TotalByteLength += counter[cnt].ByteLength;
 966                         object[obj].DefinitionLength += counter[cnt].ByteLength;
 967                 }
 968                 if(object[obj].NumInstances != PERF_NO_INSTANCES)
 969                 {
 970                         for(inst = 0; inst < object[obj].NumInstances; inst++)
 971                         {
 972                                 instance = &(object[obj].instances[inst]);
 973                                 object[obj].TotalByteLength += instance->ByteLength;
 974                                 counter_data = &(instance->counter_data);
 975                                 counter = &(object[obj].counters[object[obj].NumCounters - 1]);
 976                                 counter_data->ByteLength = counter->CounterOffset + counter->CounterSize + sizeof(counter_data->ByteLength);
 977                                 temp = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 978                                                             temp,
 979                                                             char,
 980                                                             counter_data->ByteLength- sizeof(counter_data->ByteLength));
 981                                 if (temp == NULL) {
 982                                         return 0;
 983                                 }
 984                                 memset(temp, 0, counter_data->ByteLength - sizeof(counter_data->ByteLength));
 985                                 src_addr = (char *)counter_data->data;
 986                                 for(i = 0; i < object[obj].NumCounters; i++)
 987                                 {
 988                                         counter = &(object[obj].counters[i]);
 989                                         dst_addr = temp + counter->CounterOffset - sizeof(counter_data->ByteLength);
 990                                         memcpy(dst_addr, src_addr, counter->CounterSize);
 991                                         src_addr += counter->CounterSize;
 992                                 }
 993                                 /* Make sure to be 64-bit aligned */
 994                                 if((pad = (counter_data->ByteLength % 8)))
 995                                 {
 996                                         pad = 8 - pad;
 997                                 }
 998                                 counter_data->data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 999                                                                          counter_data->data,
1000                                                                          uint8,
1001                                                                          counter_data->ByteLength - sizeof(counter_data->ByteLength) + pad);
1002                                 if (counter_data->data == NULL) {
1003                                         return 0;
1004                                 }
1005                                 memset(counter_data->data, 0, counter_data->ByteLength - sizeof(counter_data->ByteLength) + pad);
1006                                 memcpy(counter_data->data, temp, counter_data->ByteLength - sizeof(counter_data->ByteLength));
1007                                 counter_data->ByteLength += pad;
1008                                 object[obj].TotalByteLength += counter_data->ByteLength;
1009                         }
1010                 }
1011                 else
1012                 {
1013                         /* Need to be 64-bit aligned at the end of the counter_data block, so pad counter_data to a 64-bit boundary,
1014                            so that the next PERF_OBJECT_TYPE can start on a 64-bit alignment */
1015                         if((pad = (object[obj].counter_data.ByteLength % 8)))
1016                         {
1017                                 pad = 8 - pad;
1018                                 object[obj].counter_data.data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
1019                                                                                      object[obj].counter_data.data,
1020                                                                                      uint8,
1021                                                                                      object[obj].counter_data.ByteLength + pad);
1022                                 memset((void *)(object[obj].counter_data.data + object[obj].counter_data.ByteLength), 0, pad);
1023                                 object[obj].counter_data.ByteLength += pad;
1024                         }
1025                         object[obj].TotalByteLength += object[obj].counter_data.ByteLength;
1026                 }
1027                 object[obj].HeaderLength = sizeof(*object) - (sizeof(counter) + sizeof(instance) + sizeof(PERF_COUNTER_BLOCK));
1028                 object[obj].TotalByteLength += object[obj].HeaderLength;
1029                 object[obj].DefinitionLength += object[obj].HeaderLength;
1030
1031                 block->TotalByteLength += object[obj].TotalByteLength;
1032         }
1033
1034         return block->TotalByteLength;
1035 }
1036
1037 /*********************************************************************
1038 *********************************************************************/
1039
1040 uint32 reg_perfcount_get_perf_data_block(uint32 base_index,
1041                                          prs_struct *ps,
1042                                          PERF_DATA_BLOCK *block,
1043                                          const char *object_ids)
1044 {
1045         uint32 buffer_size = 0;
1046         const char *fname = counters_directory( NAMES_DB );
1047         TDB_CONTEXT *names;
1048         int retval = 0;
1049
1050         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
1051
1052         if(names == NULL)
1053         {
1054                 DEBUG(1, ("reg_perfcount_get_perf_data_block: unable to open [%s].\n", fname));
1055                 return 0;
1056         }
1057
1058         if (!_reg_perfcount_init_data_block(block, ps, names)) {
1059                 DEBUG(0, ("_reg_perfcount_init_data_block failed\n"));
1060                 tdb_close(names);
1061                 return 0;
1062         }
1063
1064         reg_perfcount_get_last_counter(base_index);
1065
1066         if(object_ids == NULL)
1067         {
1068                 /* we're getting a request for "Global" here */
1069                 retval = _reg_perfcount_assemble_global(block, ps, base_index, names);
1070         }
1071         else
1072         {
1073                 /* we're getting a request for a specific set of PERF_OBJECT_TYPES */
1074                 retval = _reg_perfcount_assemble_global(block, ps, base_index, names);
1075         }
1076         buffer_size = _reg_perfcount_perf_data_block_fixup(block, ps);
1077
1078         tdb_close(names);
1079
1080         if (retval == -1) {
1081                 return 0;
1082         }
1083
1084         return buffer_size + block->HeaderLength;
1085 }
1086
1087 /*********************************************************************
1088 *********************************************************************/
1089
1090 static bool _reg_perfcount_marshall_perf_data_block(prs_struct *ps, PERF_DATA_BLOCK block, int depth)
1091 {
1092         int i;
1093         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_data_block");
1094         depth++;
1095
1096         if(!prs_align(ps))
1097                 return False;
1098         for(i = 0; i < 4; i++)
1099         {
1100                 if(!prs_uint16("Signature", ps, depth, &block.Signature[i]))
1101                         return False;
1102         }
1103         if(!prs_uint32("Little Endian", ps, depth, &block.LittleEndian))
1104                 return False;
1105         if(!prs_uint32("Version", ps, depth, &block.Version))
1106                 return False;
1107         if(!prs_uint32("Revision", ps, depth, &block.Revision))
1108                 return False;
1109         if(!prs_uint32("TotalByteLength", ps, depth, &block.TotalByteLength))
1110                 return False;
1111         if(!prs_uint32("HeaderLength", ps, depth, &block.HeaderLength))
1112                 return False;
1113         if(!prs_uint32("NumObjectTypes", ps, depth, &block.NumObjectTypes))
1114                 return False;
1115         if(!prs_uint32("DefaultObject", ps, depth, &block.DefaultObject))
1116                 return False;
1117         if(!smb_io_system_time("SystemTime", ps, depth, &block.SystemTime))
1118                 return False;
1119         if(!prs_uint32("Padding", ps, depth, &block.Padding))
1120                 return False;
1121         if(!prs_align_uint64(ps))
1122                 return False;
1123         if(!prs_uint64("PerfTime", ps, depth, &block.PerfTime))
1124                 return False;
1125         if(!prs_uint64("PerfFreq", ps, depth, &block.PerfFreq))
1126                 return False;
1127         if(!prs_uint64("PerfTime100nSec", ps, depth, &block.PerfTime100nSec))
1128                 return False;
1129         if(!prs_uint32("SystemNameLength", ps, depth, &block.SystemNameLength))
1130                 return False;
1131         if(!prs_uint32("SystemNameOffset", ps, depth, &block.SystemNameOffset))
1132                 return False;
1133         /* hack to make sure we're 64-bit aligned at the end of this whole mess */
1134         if(!prs_uint8s(False, "SystemName", ps, depth, block.data,
1135                        block.HeaderLength - block.SystemNameOffset))
1136                 return False;
1137
1138         return True;
1139 }
1140
1141 /*********************************************************************
1142 *********************************************************************/
1143
1144 static bool _reg_perfcount_marshall_perf_counters(prs_struct *ps,
1145                                                   PERF_OBJECT_TYPE object,
1146                                                   int depth)
1147 {
1148         int cnt;
1149         PERF_COUNTER_DEFINITION counter;
1150
1151         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_counters");
1152         depth++;
1153
1154         for(cnt = 0; cnt < object.NumCounters; cnt++)
1155         {
1156                 counter = object.counters[cnt];
1157
1158                 if(!prs_align(ps))
1159                         return False;
1160                 if(!prs_uint32("ByteLength", ps, depth, &counter.ByteLength))
1161                         return False;
1162                 if(!prs_uint32("CounterNameTitleIndex", ps, depth, &counter.CounterNameTitleIndex))
1163                         return False;
1164                 if(!prs_uint32("CounterNameTitlePointer", ps, depth, &counter.CounterNameTitlePointer))
1165                         return False;
1166                 if(!prs_uint32("CounterHelpTitleIndex", ps, depth, &counter.CounterHelpTitleIndex))
1167                         return False;
1168                 if(!prs_uint32("CounterHelpTitlePointer", ps, depth, &counter.CounterHelpTitlePointer))
1169                         return False;
1170                 if(!prs_uint32("DefaultScale", ps, depth, &counter.DefaultScale))
1171                         return False;
1172                 if(!prs_uint32("DetailLevel", ps, depth, &counter.DetailLevel))
1173                         return False;
1174                 if(!prs_uint32("CounterType", ps, depth, &counter.CounterType))
1175                         return False;
1176                 if(!prs_uint32("CounterSize", ps, depth, &counter.CounterSize))
1177                         return False;
1178                 if(!prs_uint32("CounterOffset", ps, depth, &counter.CounterOffset))
1179                         return False;
1180         }
1181
1182         return True;
1183 }
1184
1185 /*********************************************************************
1186 *********************************************************************/
1187
1188 static bool _reg_perfcount_marshall_perf_counter_data(prs_struct *ps,
1189                                                       PERF_COUNTER_BLOCK counter_data,
1190                                                       int depth)
1191 {
1192         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_counter_data");
1193         depth++;
1194
1195         if(!prs_align_uint64(ps))
1196                 return False;
1197
1198         if(!prs_uint32("ByteLength", ps, depth, &counter_data.ByteLength))
1199                 return False;
1200         if(!prs_uint8s(False, "CounterData", ps, depth, counter_data.data, counter_data.ByteLength - sizeof(uint32)))
1201                 return False;
1202         if(!prs_align_uint64(ps))
1203                 return False;
1204
1205         return True;
1206 }
1207
1208 /*********************************************************************
1209 *********************************************************************/
1210
1211 static bool _reg_perfcount_marshall_perf_instances(prs_struct *ps,
1212                                                    PERF_OBJECT_TYPE object,
1213                                                    int depth)
1214 {
1215         PERF_INSTANCE_DEFINITION instance;
1216         int inst;
1217
1218         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_instances");
1219         depth++;
1220
1221         for(inst = 0; inst < object.NumInstances; inst++)
1222         {
1223                 instance = object.instances[inst];
1224
1225                 if(!prs_align(ps))
1226                         return False;
1227                 if(!prs_uint32("ByteLength", ps, depth, &instance.ByteLength))
1228                         return False;
1229                 if(!prs_uint32("ParentObjectTitleIndex", ps, depth, &instance.ParentObjectTitleIndex))
1230                         return False;
1231                 if(!prs_uint32("ParentObjectTitlePointer", ps, depth, &instance.ParentObjectTitlePointer))
1232                         return False;
1233                 if(!prs_uint32("UniqueID", ps, depth, &instance.UniqueID))
1234                         return False;
1235                 if(!prs_uint32("NameOffset", ps, depth, &instance.NameOffset))
1236                         return False;
1237                 if(!prs_uint32("NameLength", ps, depth, &instance.NameLength))
1238                         return False;
1239                 if(!prs_uint8s(False, "InstanceName", ps, depth, instance.data,
1240                                instance.ByteLength - instance.NameOffset))
1241                         return False;
1242                 if(_reg_perfcount_marshall_perf_counter_data(ps, instance.counter_data, depth) == False)
1243                         return False;
1244         }
1245
1246         return True;
1247 }
1248
1249 /*********************************************************************
1250 *********************************************************************/
1251
1252 static bool _reg_perfcount_marshall_perf_objects(prs_struct *ps, PERF_DATA_BLOCK block, int depth)
1253 {
1254         int obj;
1255
1256         PERF_OBJECT_TYPE object;
1257
1258         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_objects");
1259         depth++;
1260
1261         for(obj = 0; obj < block.NumObjectTypes; obj++)
1262         {
1263                 object = block.objects[obj];
1264
1265                 if(!prs_align(ps))
1266                         return False;
1267
1268                 if(!prs_uint32("TotalByteLength", ps, depth, &object.TotalByteLength))
1269                         return False;
1270                 if(!prs_uint32("DefinitionLength", ps, depth, &object.DefinitionLength))
1271                         return False;
1272                 if(!prs_uint32("HeaderLength", ps, depth, &object.HeaderLength))
1273                         return False;
1274                 if(!prs_uint32("ObjectNameTitleIndex", ps, depth, &object.ObjectNameTitleIndex))
1275                         return False;
1276                 if(!prs_uint32("ObjectNameTitlePointer", ps, depth, &object.ObjectNameTitlePointer))
1277                         return False;
1278                 if(!prs_uint32("ObjectHelpTitleIndex", ps, depth, &object.ObjectHelpTitleIndex))
1279                         return False;
1280                 if(!prs_uint32("ObjectHelpTitlePointer", ps, depth, &object.ObjectHelpTitlePointer))
1281                         return False;
1282                 if(!prs_uint32("DetailLevel", ps, depth, &object.DetailLevel))
1283                         return False;
1284                 if(!prs_uint32("NumCounters", ps, depth, &object.NumCounters))
1285                         return False;
1286                 if(!prs_uint32("DefaultCounter", ps, depth, &object.DefaultCounter))
1287                         return False;
1288                 if(!prs_uint32("NumInstances", ps, depth, &object.NumInstances))
1289                         return False;
1290                 if(!prs_uint32("CodePage", ps, depth, &object.CodePage))
1291                         return False;
1292                 if(!prs_align_uint64(ps))
1293                         return False;
1294                 if(!prs_uint64("PerfTime", ps, depth, &object.PerfTime))
1295                         return False;
1296                 if(!prs_uint64("PerfFreq", ps, depth, &object.PerfFreq))
1297                         return False;
1298
1299                 /* Now do the counters */
1300                 /* If no instances, encode counter_data */
1301                 /* If instances, encode instace plus counter data for each instance */
1302                 if(_reg_perfcount_marshall_perf_counters(ps, object, depth) == False)
1303                         return False;
1304                 if(object.NumInstances == PERF_NO_INSTANCES)
1305                 {
1306                         if(_reg_perfcount_marshall_perf_counter_data(ps, object.counter_data, depth) == False)
1307                                 return False;
1308                 }
1309                 else
1310                 {
1311                         if(_reg_perfcount_marshall_perf_instances(ps, object, depth) == False)
1312                                 return False;
1313                 }
1314         }
1315
1316         return True;
1317 }
1318
1319 /*********************************************************************
1320 *********************************************************************/
1321
1322 static bool _reg_perfcount_marshall_hkpd(prs_struct *ps, PERF_DATA_BLOCK block)
1323 {
1324         int depth = 0;
1325         if(_reg_perfcount_marshall_perf_data_block(ps, block, depth) == True)
1326         {
1327                 if(_reg_perfcount_marshall_perf_objects(ps, block, depth) == True)
1328                         return True;
1329         }
1330         return False;
1331 }
1332
1333 /*********************************************************************
1334 *********************************************************************/
1335
1336 WERROR reg_perfcount_get_hkpd(prs_struct *ps, uint32 max_buf_size, uint32 *outbuf_len, const char *object_ids)
1337 {
1338         /*
1339          * For a detailed description of the layout of this structure,
1340          * see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/perfmon/base/performance_data_format.asp
1341          *
1342          * By 2006-11-23 this link did not work anymore, I found something
1343          * promising under
1344          * http://msdn2.microsoft.com/en-us/library/aa373105.aspx -- vl
1345          */
1346         PERF_DATA_BLOCK block;
1347         uint32 buffer_size, base_index;
1348
1349         buffer_size = 0;
1350         base_index = reg_perfcount_get_base_index();
1351         ZERO_STRUCT(block);
1352
1353         buffer_size = reg_perfcount_get_perf_data_block(base_index, ps, &block, object_ids);
1354
1355         if(buffer_size < max_buf_size)
1356         {
1357                 *outbuf_len = buffer_size;
1358                 if(_reg_perfcount_marshall_hkpd(ps, block) == True)
1359                         return WERR_OK;
1360                 else
1361                         return WERR_NOMEM;
1362         }
1363         else
1364         {
1365                 *outbuf_len = max_buf_size;
1366                 _reg_perfcount_marshall_perf_data_block(ps, block, 0);
1367                 return WERR_INSUFFICIENT_BUFFER;
1368         }
1369 }