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         if (!dbname)
  45                 return NULL;
  46
  47         path = talloc_asprintf(ctx, "%s/%s", PERFCOUNTDIR, dbname);
  48         if (!path) {
  49                 return NULL;
  50         }
  51
  52         ret = talloc_strdup(ctx, state_path(path));
  53         TALLOC_FREE(path);
  54         return ret;
  55 }
  56
  57 /*********************************************************************
  58 *********************************************************************/
  59
  60 void perfcount_init_keys( void )
  61 {
  62         char *p = state_path(PERFCOUNTDIR);
  63
  64         /* no registry keys; just create the perfmon directory */
  65
  66         if ( !directory_exist( p ) )
  67                 mkdir( p, 0755 );
  68
  69         return;
  70 }
  71
  72 /*********************************************************************
  73 *********************************************************************/
  74
  75 uint32 reg_perfcount_get_base_index(void)
  76 {
  77         const char *fname = counters_directory( NAMES_DB );
  78         TDB_CONTEXT *names;
  79         TDB_DATA kbuf, dbuf;
  80         char key[] = "1";
  81         uint32 retval = 0;
  82         char buf[PERFCOUNT_MAX_LEN];
  83
  84         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
  85
  86         if ( !names ) {
  87                 DEBUG(1, ("reg_perfcount_get_base_index: unable to open [%s].\n", fname));
  88                 return 0;
  89         }
  90         /* needs to read the value of key "1" from the counter_names.tdb file, as that is
  91            where the total number of counters is stored. We're assuming no holes in the
  92            enumeration.
  93            The format for the counter_names.tdb file is:
  94            key        value
  95            1          num_counters
  96            2          perf_counter1
  97            3          perf_counter1_help
  98            4          perf_counter2
  99            5          perf_counter2_help
 100            even_num   perf_counter<even_num>
 101            even_num+1 perf_counter<even_num>_help
 102            and so on.
 103            So last_counter becomes num_counters*2, and last_help will be last_counter+1 */
 104         kbuf = string_tdb_data(key);
 105         dbuf = tdb_fetch(names, kbuf);
 106         if(dbuf.dptr == NULL)
 107         {
 108                 DEBUG(1, ("reg_perfcount_get_base_index: failed to find key \'1\' in [%s].\n", fname));
 109                 tdb_close(names);
 110                 return 0;
 111         }
 112         else
 113         {
 114                 tdb_close(names);
 115                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 116                 memcpy(buf, dbuf.dptr, dbuf.dsize);
 117                 retval = (uint32)atoi(buf);
 118                 SAFE_FREE(dbuf.dptr);
 119                 return retval;
 120         }
 121         return 0;
 122 }
 123
 124 /*********************************************************************
 125 *********************************************************************/
 126
 127 uint32 reg_perfcount_get_last_counter(uint32 base_index)
 128 {
 129         uint32 retval;
 130
 131         if(base_index == 0)
 132                 retval = 0;
 133         else
 134                 retval = base_index * 2;
 135
 136         return retval;
 137 }
 138
 139 /*********************************************************************
 140 *********************************************************************/
 141
 142 uint32 reg_perfcount_get_last_help(uint32 last_counter)
 143 {
 144         uint32 retval;
 145
 146         if(last_counter == 0)
 147                 retval = 0;
 148         else
 149                 retval = last_counter + 1;
 150
 151         return retval;
 152 }
 153
 154
 155 /*********************************************************************
 156 *********************************************************************/
 157
 158 static uint32 _reg_perfcount_multi_sz_from_tdb(TDB_CONTEXT *tdb,
 159                                                int keyval,
 160                                                char **retbuf,
 161                                                uint32 buffer_size)
 162 {
 163         TDB_DATA kbuf, dbuf;
 164         char temp[256];
 165         char *buf1 = *retbuf;
 166         uint32 working_size = 0;
 167         UNISTR2 name_index, name;
 168
 169         memset(temp, 0, sizeof(temp));
 170         snprintf(temp, sizeof(temp), "%d", keyval);
 171         kbuf = string_tdb_data(temp);
 172         dbuf = tdb_fetch(tdb, kbuf);
 173         if(dbuf.dptr == NULL)
 174         {
 175                 /* If a key isn't there, just bypass it -- this really shouldn't
 176                    happen unless someone's mucking around with the tdb */
 177                 DEBUG(3, ("_reg_perfcount_multi_sz_from_tdb: failed to find key [%s] in [%s].\n",
 178                           temp, tdb_name(tdb)));
 179                 return buffer_size;
 180         }
 181         /* First encode the name_index */
 182         working_size = (kbuf.dsize + 1)*sizeof(uint16);
 183         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + working_size);
 184         if(!buf1) {
 185                 buffer_size = 0;
 186                 return buffer_size;
 187         }
 188         init_unistr2(&name_index, (const char *)kbuf.dptr, UNI_STR_TERMINATE);
 189         memcpy(buf1+buffer_size, (char *)name_index.buffer, working_size);
 190         buffer_size += working_size;
 191         /* Now encode the actual name */
 192         working_size = (dbuf.dsize + 1)*sizeof(uint16);
 193         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + working_size);
 194         if(!buf1) {
 195                 buffer_size = 0;
 196                 return buffer_size;
 197         }
 198         memset(temp, 0, sizeof(temp));
 199         memcpy(temp, dbuf.dptr, dbuf.dsize);
 200         SAFE_FREE(dbuf.dptr);
 201         init_unistr2(&name, temp, UNI_STR_TERMINATE);
 202         memcpy(buf1+buffer_size, (char *)name.buffer, working_size);
 203         buffer_size += working_size;
 204
 205         *retbuf = buf1;
 206
 207         return buffer_size;
 208 }
 209
 210 /*********************************************************************
 211 *********************************************************************/
 212
 213 uint32 reg_perfcount_get_counter_help(uint32 base_index, char **retbuf)
 214 {
 215         char *buf1 = NULL;
 216         uint32 buffer_size = 0;
 217         TDB_CONTEXT *names;
 218         const char *fname = counters_directory( NAMES_DB );
 219         int i;
 220
 221         if(base_index == 0)
 222                 return 0;
 223
 224         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 225
 226         if(names == NULL)
 227         {
 228                 DEBUG(1, ("reg_perfcount_get_counter_help: unable to open [%s].\n", fname));
 229                 return 0;
 230         }
 231
 232         for(i = 1; i <= base_index; i++)
 233         {
 234                 buffer_size = _reg_perfcount_multi_sz_from_tdb(names, (i*2)+1, retbuf, buffer_size);
 235         }
 236         tdb_close(names);
 237
 238         /* Now terminate the MULTI_SZ with a double unicode NULL */
 239         buf1 = *retbuf;
 240         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + 2);
 241         if(!buf1) {
 242                 buffer_size = 0;
 243         } else {
 244                 buf1[buffer_size++] = '\0';
 245                 buf1[buffer_size++] = '\0';
 246         }
 247
 248         *retbuf = buf1;
 249
 250         return buffer_size;
 251 }
 252
 253 /*********************************************************************
 254 *********************************************************************/
 255
 256 uint32 reg_perfcount_get_counter_names(uint32 base_index, char **retbuf)
 257 {
 258         char *buf1 = NULL;
 259         uint32 buffer_size = 0;
 260         TDB_CONTEXT *names;
 261         const char *fname = counters_directory( NAMES_DB );
 262         int i;
 263
 264         if(base_index == 0)
 265                 return 0;
 266
 267         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 268
 269         if(names == NULL)
 270         {
 271                 DEBUG(1, ("reg_perfcount_get_counter_names: unable to open [%s].\n", fname));
 272                 return 0;
 273         }
 274
 275         buffer_size = _reg_perfcount_multi_sz_from_tdb(names, 1, retbuf, buffer_size);
 276
 277         for(i = 1; i <= base_index; i++)
 278         {
 279                 buffer_size = _reg_perfcount_multi_sz_from_tdb(names, i*2, retbuf, buffer_size);
 280         }
 281         tdb_close(names);
 282
 283         /* Now terminate the MULTI_SZ with a double unicode NULL */
 284         buf1 = *retbuf;
 285         buf1 = (char *)SMB_REALLOC(buf1, buffer_size + 2);
 286         if(!buf1) {
 287                 buffer_size = 0;
 288         } else {
 289                 buf1[buffer_size++] = '\0';
 290                 buf1[buffer_size++] = '\0';
 291         }
 292
 293         *retbuf=buf1;
 294
 295         return buffer_size;
 296 }
 297
 298 /*********************************************************************
 299 *********************************************************************/
 300
 301 static void _reg_perfcount_make_key(TDB_DATA *key,
 302                                     char *buf,
 303                                     int buflen,
 304                                     int key_part1,
 305                                     const char *key_part2)
 306 {
 307         memset(buf, 0, buflen);
 308         if(key_part2 != NULL)
 309                 snprintf(buf, buflen,"%d%s", key_part1, key_part2);
 310         else
 311                 snprintf(buf, buflen, "%d", key_part1);
 312
 313         *key = string_tdb_data(buf);
 314
 315         return;
 316 }
 317
 318 /*********************************************************************
 319 *********************************************************************/
 320
 321 static bool _reg_perfcount_isparent(TDB_DATA data)
 322 {
 323         if(data.dsize > 0)
 324         {
 325                 if(data.dptr[0] == 'p')
 326                         return True;
 327                 else
 328                         return False;
 329         }
 330         return False;
 331 }
 332
 333 /*********************************************************************
 334 *********************************************************************/
 335
 336 static bool _reg_perfcount_ischild(TDB_DATA data)
 337 {
 338         if(data.dsize > 0)
 339         {
 340                 if(data.dptr[0] == 'c')
 341                         return True;
 342                 else
 343                         return False;
 344         }
 345         return False;
 346 }
 347
 348 /*********************************************************************
 349 *********************************************************************/
 350
 351 static uint32 _reg_perfcount_get_numinst(int objInd, TDB_CONTEXT *names)
 352 {
 353         TDB_DATA key, data;
 354         char buf[PERFCOUNT_MAX_LEN];
 355
 356         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, objInd, "inst");
 357         data = tdb_fetch(names, key);
 358
 359         if(data.dptr == NULL)
 360                 return (uint32)PERF_NO_INSTANCES;
 361
 362         memset(buf, 0, PERFCOUNT_MAX_LEN);
 363         memcpy(buf, data.dptr, data.dsize);
 364         SAFE_FREE(data.dptr);
 365         return (uint32)atoi(buf);
 366 }
 367
 368 /*********************************************************************
 369 *********************************************************************/
 370
 371 static bool _reg_perfcount_add_object(PERF_DATA_BLOCK *block,
 372                                       prs_struct *ps,
 373                                       int num,
 374                                       TDB_DATA data,
 375                                       TDB_CONTEXT *names)
 376 {
 377         int i;
 378         bool success = True;
 379         PERF_OBJECT_TYPE *obj;
 380
 381         block->objects = (PERF_OBJECT_TYPE *)TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 382                                                                   block->objects,
 383                                                                   PERF_OBJECT_TYPE,
 384                                                                   block->NumObjectTypes+1);
 385         if(block->objects == NULL)
 386                 return False;
 387         obj = &(block->objects[block->NumObjectTypes]);
 388         memset((void *)&(block->objects[block->NumObjectTypes]), 0, sizeof(PERF_OBJECT_TYPE));
 389         block->objects[block->NumObjectTypes].ObjectNameTitleIndex = num;
 390         block->objects[block->NumObjectTypes].ObjectNameTitlePointer = 0;
 391         block->objects[block->NumObjectTypes].ObjectHelpTitleIndex = num+1;
 392         block->objects[block->NumObjectTypes].ObjectHelpTitlePointer = 0;
 393         block->objects[block->NumObjectTypes].NumCounters = 0;
 394         block->objects[block->NumObjectTypes].DefaultCounter = 0;
 395         block->objects[block->NumObjectTypes].NumInstances = _reg_perfcount_get_numinst(num, names);
 396         block->objects[block->NumObjectTypes].counters = NULL;
 397         block->objects[block->NumObjectTypes].instances = NULL;
 398         block->objects[block->NumObjectTypes].counter_data.ByteLength = sizeof(uint32);
 399         block->objects[block->NumObjectTypes].counter_data.data = NULL;
 400         block->objects[block->NumObjectTypes].DetailLevel = PERF_DETAIL_NOVICE;
 401         block->NumObjectTypes+=1;
 402
 403         for(i = 0; i < (int)obj->NumInstances; i++) {
 404                 success = _reg_perfcount_add_instance(obj, ps, i, names);
 405         }
 406
 407         return success;
 408 }
 409
 410 /*********************************************************************
 411 *********************************************************************/
 412
 413 bool _reg_perfcount_get_counter_data(TDB_DATA key, TDB_DATA *data)
 414 {
 415         TDB_CONTEXT *counters;
 416         const char *fname = counters_directory( DATA_DB );
 417
 418         counters = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 419
 420         if(counters == NULL)
 421         {
 422                 DEBUG(1, ("reg_perfcount_get_counter_data: unable to open [%s].\n", fname));
 423                 return False;
 424         }
 425
 426         *data = tdb_fetch(counters, key);
 427
 428         tdb_close(counters);
 429
 430         return True;
 431 }
 432
 433 /*********************************************************************
 434 *********************************************************************/
 435
 436 static uint32 _reg_perfcount_get_size_field(uint32 CounterType)
 437 {
 438         uint32 retval;
 439
 440         retval = CounterType;
 441
 442         /* First mask out reserved lower 8 bits */
 443         retval = retval & 0xFFFFFF00;
 444         retval = retval << 22;
 445         retval = retval >> 22;
 446
 447         return retval;
 448 }
 449
 450 /*********************************************************************
 451 *********************************************************************/
 452
 453 static uint32 _reg_perfcount_compute_scale(int64_t data)
 454 {
 455         int scale = 0;
 456         if(data == 0)
 457                 return scale;
 458         while(data > 100)
 459         {
 460                 data /= 10;
 461                 scale--;
 462         }
 463         while(data < 10)
 464         {
 465                 data *= 10;
 466                 scale++;
 467         }
 468
 469         return (uint32)scale;
 470 }
 471
 472 /*********************************************************************
 473 *********************************************************************/
 474
 475 static bool _reg_perfcount_get_counter_info(PERF_DATA_BLOCK *block,
 476                                             prs_struct *ps,
 477                                             int CounterIndex,
 478                                             PERF_OBJECT_TYPE *obj,
 479                                             TDB_CONTEXT *names)
 480 {
 481         TDB_DATA key, data;
 482         char buf[PERFCOUNT_MAX_LEN];
 483         size_t dsize, padding;
 484         long int data32, dbuf[2];
 485         int64_t data64;
 486         uint32 counter_size;
 487
 488         obj->counters[obj->NumCounters].DefaultScale = 0;
 489         dbuf[0] = dbuf[1] = 0;
 490         padding = 0;
 491
 492         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, CounterIndex, "type");
 493         data = tdb_fetch(names, key);
 494         if(data.dptr == NULL)
 495         {
 496                 DEBUG(3, ("_reg_perfcount_get_counter_info: No type data for counter [%d].\n", CounterIndex));
 497                 return False;
 498         }
 499         memset(buf, 0, PERFCOUNT_MAX_LEN);
 500         memcpy(buf, data.dptr, data.dsize);
 501         obj->counters[obj->NumCounters].CounterType = atoi(buf);
 502         DEBUG(10, ("_reg_perfcount_get_counter_info: Got type [%d] for counter [%d].\n",
 503                    obj->counters[obj->NumCounters].CounterType, CounterIndex));
 504         SAFE_FREE(data.dptr);
 505
 506         /* Fetch the actual data */
 507         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, CounterIndex, "");
 508         _reg_perfcount_get_counter_data(key, &data);
 509         if(data.dptr == NULL)
 510         {
 511                 DEBUG(3, ("_reg_perfcount_get_counter_info: No counter data for counter [%d].\n", CounterIndex));
 512                 return False;
 513         }
 514
 515         counter_size = _reg_perfcount_get_size_field(obj->counters[obj->NumCounters].CounterType);
 516
 517         if(counter_size == PERF_SIZE_DWORD)
 518         {
 519                 dsize = sizeof(data32);
 520                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 521                 memcpy(buf, data.dptr, data.dsize);
 522                 data32 = strtol(buf, NULL, 0);
 523                 if((obj->counters[obj->NumCounters].CounterType & 0x00000F00) == PERF_TYPE_NUMBER)
 524                         obj->counters[obj->NumCounters].DefaultScale = _reg_perfcount_compute_scale((int64_t)data32);
 525                 else
 526                         obj->counters[obj->NumCounters].DefaultScale = 0;
 527                 dbuf[0] = data32;
 528                 padding = (dsize - (obj->counter_data.ByteLength%dsize)) % dsize;
 529         }
 530         else if(counter_size == PERF_SIZE_LARGE)
 531         {
 532                 dsize = sizeof(data64);
 533                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 534                 memcpy(buf, data.dptr, data.dsize);
 535                 data64 = atof(buf);
 536                 if((obj->counters[obj->NumCounters].CounterType & 0x00000F00) == PERF_TYPE_NUMBER)
 537                         obj->counters[obj->NumCounters].DefaultScale = _reg_perfcount_compute_scale(data64);
 538                 else
 539                         obj->counters[obj->NumCounters].DefaultScale = 0;
 540                 memcpy((void *)dbuf, (const void *)&data64, dsize);
 541                 padding = (dsize - (obj->counter_data.ByteLength%dsize)) % dsize;
 542         }
 543         else /* PERF_SIZE_VARIABLE_LEN */
 544         {
 545                 dsize = data.dsize;
 546                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 547                 memcpy(buf, data.dptr, data.dsize);
 548         }
 549         SAFE_FREE(data.dptr);
 550
 551         obj->counter_data.ByteLength += dsize + padding;
 552         obj->counter_data.data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 553                                                       obj->counter_data.data,
 554                                                       uint8,
 555                                                       obj->counter_data.ByteLength - sizeof(uint32));
 556         if(obj->counter_data.data == NULL)
 557                 return False;
 558         if(dbuf[0] != 0 || dbuf[1] != 0)
 559         {
 560                 memcpy((void *)(obj->counter_data.data +
 561                                 (obj->counter_data.ByteLength - (sizeof(uint32) + dsize))),
 562                        (const void *)dbuf, dsize);
 563         }
 564         else
 565         {
 566                 /* Handling PERF_SIZE_VARIABLE_LEN */
 567                 memcpy((void *)(obj->counter_data.data +
 568                                 (obj->counter_data.ByteLength - (sizeof(uint32) + dsize))),
 569                        (const void *)buf, dsize);
 570         }
 571         obj->counters[obj->NumCounters].CounterOffset = obj->counter_data.ByteLength - dsize;
 572         if(obj->counters[obj->NumCounters].CounterOffset % dsize != 0)
 573         {
 574                 DEBUG(3,("Improperly aligned counter [%d]\n", obj->NumCounters));
 575         }
 576         obj->counters[obj->NumCounters].CounterSize = dsize;
 577
 578         return True;
 579 }
 580
 581 /*********************************************************************
 582 *********************************************************************/
 583
 584 PERF_OBJECT_TYPE *_reg_perfcount_find_obj(PERF_DATA_BLOCK *block, int objind)
 585 {
 586         int i;
 587
 588         PERF_OBJECT_TYPE *obj = NULL;
 589
 590         for(i = 0; i < block->NumObjectTypes; i++)
 591         {
 592                 if(block->objects[i].ObjectNameTitleIndex == objind)
 593                 {
 594                         obj = &(block->objects[i]);
 595                 }
 596         }
 597
 598         return obj;
 599 }
 600
 601 /*********************************************************************
 602 *********************************************************************/
 603
 604 static bool _reg_perfcount_add_counter(PERF_DATA_BLOCK *block,
 605                                        prs_struct *ps,
 606                                        int num,
 607                                        TDB_DATA data,
 608                                        TDB_CONTEXT *names)
 609 {
 610         char *begin, *end, *start, *stop;
 611         int parent;
 612         PERF_OBJECT_TYPE *obj;
 613         bool success = True;
 614         char buf[PERFCOUNT_MAX_LEN];
 615
 616         obj = NULL;
 617         memset(buf, 0, PERFCOUNT_MAX_LEN);
 618         memcpy(buf, data.dptr, data.dsize);
 619         begin = index(buf, '[');
 620         end = index(buf, ']');
 621         if(begin == NULL || end == NULL)
 622                 return False;
 623         start = begin+1;
 624
 625         while(start < end) {
 626                 stop = index(start, ',');
 627                 if(stop == NULL)
 628                         stop = end;
 629                 *stop = '\0';
 630                 parent = atoi(start);
 631
 632                 obj = _reg_perfcount_find_obj(block, parent);
 633                 if(obj == NULL) {
 634                         /* At this point we require that the parent object exist.
 635                            This can probably be handled better at some later time */
 636                         DEBUG(3, ("_reg_perfcount_add_counter: Could not find parent object [%d] for counter [%d].\n",
 637                                   parent, num));
 638                         return False;
 639                 }
 640                 obj->counters = (PERF_COUNTER_DEFINITION *)TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 641                                                                                 obj->counters,
 642                                                                                 PERF_COUNTER_DEFINITION,
 643                                                                                 obj->NumCounters+1);
 644                 if(obj->counters == NULL)
 645                         return False;
 646                 memset((void *)&(obj->counters[obj->NumCounters]), 0, sizeof(PERF_COUNTER_DEFINITION));
 647                 obj->counters[obj->NumCounters].CounterNameTitleIndex=num;
 648                 obj->counters[obj->NumCounters].CounterHelpTitleIndex=num+1;
 649                 obj->counters[obj->NumCounters].DetailLevel = PERF_DETAIL_NOVICE;
 650                 obj->counters[obj->NumCounters].ByteLength = sizeof(PERF_COUNTER_DEFINITION);
 651                 success = _reg_perfcount_get_counter_info(block, ps, num, obj, names);
 652                 obj->NumCounters += 1;
 653                 start = stop + 1;
 654         }
 655
 656         /* Handle case of Objects/Counters without any counter data, which would suggest
 657            that the required instances are not there yet, so change NumInstances from
 658            PERF_NO_INSTANCES to 0 */
 659
 660         return success;
 661 }
 662
 663 /*********************************************************************
 664 *********************************************************************/
 665
 666 bool _reg_perfcount_get_instance_info(PERF_INSTANCE_DEFINITION *inst,
 667                                       prs_struct *ps,
 668                                       int instId,
 669                                       PERF_OBJECT_TYPE *obj,
 670                                       TDB_CONTEXT *names)
 671 {
 672         TDB_DATA key, data;
 673         char buf[PERFCOUNT_MAX_LEN], temp[PERFCOUNT_MAX_LEN];
 674         smb_ucs2_t *name = NULL;
 675         int pad;
 676
 677         /* First grab the instance data from the data file */
 678         memset(temp, 0, PERFCOUNT_MAX_LEN);
 679         snprintf(temp, PERFCOUNT_MAX_LEN, "i%d", instId);
 680         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, obj->ObjectNameTitleIndex, temp);
 681         if (!_reg_perfcount_get_counter_data(key, &data)) {
 682                 DEBUG(3, ("_reg_perfcount_get_counter_data failed\n"));
 683                 return false;
 684         }
 685         if(data.dptr == NULL)
 686         {
 687                 DEBUG(3, ("_reg_perfcount_get_instance_info: No instance data for instance [%s].\n",
 688                           buf));
 689                 return False;
 690         }
 691         inst->counter_data.ByteLength = data.dsize + sizeof(inst->counter_data.ByteLength);
 692         inst->counter_data.data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 693                                                        inst->counter_data.data,
 694                                                        uint8,
 695                                                        data.dsize);
 696         if(inst->counter_data.data == NULL)
 697                 return False;
 698         memset(inst->counter_data.data, 0, data.dsize);
 699         memcpy(inst->counter_data.data, data.dptr, data.dsize);
 700         SAFE_FREE(data.dptr);
 701
 702         /* Fetch instance name */
 703         memset(temp, 0, PERFCOUNT_MAX_LEN);
 704         snprintf(temp, PERFCOUNT_MAX_LEN, "i%dname", instId);
 705         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, obj->ObjectNameTitleIndex, temp);
 706         data = tdb_fetch(names, key);
 707         if(data.dptr == NULL)
 708         {
 709                 /* Not actually an error, but possibly unintended? -- just logging FYI */
 710                 DEBUG(3, ("_reg_perfcount_get_instance_info: No instance name for instance [%s].\n",
 711                           buf));
 712                 inst->NameLength = 0;
 713         }
 714         else
 715         {
 716                 memset(buf, 0, PERFCOUNT_MAX_LEN);
 717                 memcpy(buf, data.dptr, MIN(PERFCOUNT_MAX_LEN-1,data.dsize));
 718                 buf[PERFCOUNT_MAX_LEN-1] = '\0';
 719                 inst->NameLength = rpcstr_push_talloc(ps->mem_ctx, &name, buf);
 720                 if (inst->NameLength == (uint32_t)-1 || !name) {
 721                         SAFE_FREE(data.dptr);
 722                         return False;
 723                 }
 724                 inst->data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 725                                                   inst->data,
 726                                                   uint8,
 727                                                   inst->NameLength);
 728                 if (inst->data == NULL) {
 729                         SAFE_FREE(data.dptr);
 730                         return False;
 731                 }
 732                 memcpy(inst->data, name, inst->NameLength);
 733                 SAFE_FREE(data.dptr);
 734         }
 735
 736         inst->ParentObjectTitleIndex = 0;
 737         inst->ParentObjectTitlePointer = 0;
 738         inst->UniqueID = PERF_NO_UNIQUE_ID;
 739         inst->NameOffset = 6 * sizeof(uint32);
 740
 741         inst->ByteLength = inst->NameOffset + inst->NameLength;
 742         /* Need to be aligned on a 64-bit boundary here for counter_data */
 743         if((pad = (inst->ByteLength % 8)))
 744         {
 745                 pad = 8 - pad;
 746                 inst->data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 747                                                   inst->data,
 748                                                   uint8,
 749                                                   inst->NameLength + pad);
 750                 memset(inst->data + inst->NameLength, 0, pad);
 751                 inst->ByteLength += pad;
 752         }
 753
 754         return True;
 755 }
 756
 757 /*********************************************************************
 758 *********************************************************************/
 759
 760 bool _reg_perfcount_add_instance(PERF_OBJECT_TYPE *obj,
 761                                  prs_struct *ps,
 762                                  int instInd,
 763                                  TDB_CONTEXT *names)
 764 {
 765         PERF_INSTANCE_DEFINITION *inst;
 766
 767         if(obj->instances == NULL) {
 768                 obj->instances = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 769                                                       obj->instances,
 770                                                       PERF_INSTANCE_DEFINITION,
 771                                                       obj->NumInstances);
 772         }
 773         if(obj->instances == NULL)
 774                 return False;
 775
 776         memset(&(obj->instances[instInd]), 0, sizeof(PERF_INSTANCE_DEFINITION));
 777         inst = &(obj->instances[instInd]);
 778         return _reg_perfcount_get_instance_info(inst, ps, instInd, obj, names);
 779 }
 780
 781 /*********************************************************************
 782 *********************************************************************/
 783
 784 static int _reg_perfcount_assemble_global(PERF_DATA_BLOCK *block,
 785                                           prs_struct *ps,
 786                                           int base_index,
 787                                           TDB_CONTEXT *names)
 788 {
 789         bool success;
 790         int i, j, retval = 0;
 791         char keybuf[PERFCOUNT_MAX_LEN];
 792         TDB_DATA key, data;
 793
 794         for(i = 1; i <= base_index; i++)
 795         {
 796                 j = i*2;
 797                 _reg_perfcount_make_key(&key, keybuf, PERFCOUNT_MAX_LEN, j, "rel");
 798                 data = tdb_fetch(names, key);
 799                 if(data.dptr != NULL)
 800                 {
 801                         if(_reg_perfcount_isparent(data))
 802                                 success = _reg_perfcount_add_object(block, ps, j, data, names);
 803                         else if(_reg_perfcount_ischild(data))
 804                                 success = _reg_perfcount_add_counter(block, ps, j, data, names);
 805                         else
 806                         {
 807                                 DEBUG(3, ("Bogus relationship [%s] for counter [%d].\n", data.dptr, j));
 808                                 success = False;
 809                         }
 810                         if(success == False)
 811                         {
 812                                 DEBUG(3, ("_reg_perfcount_assemble_global: Failed to add new relationship for counter [%d].\n", j));
 813                                 retval = -1;
 814                         }
 815                         SAFE_FREE(data.dptr);
 816                 }
 817                 else
 818                         DEBUG(3, ("NULL relationship for counter [%d] using key [%s].\n", j, keybuf));
 819         }
 820         return retval;
 821 }
 822
 823 /*********************************************************************
 824 *********************************************************************/
 825
 826 static bool _reg_perfcount_get_64(uint64_t *retval,
 827                                   TDB_CONTEXT *tdb,
 828                                   int key_part1,
 829                                   const char *key_part2)
 830 {
 831         TDB_DATA key, data;
 832         char buf[PERFCOUNT_MAX_LEN];
 833
 834         _reg_perfcount_make_key(&key, buf, PERFCOUNT_MAX_LEN, key_part1, key_part2);
 835
 836         data = tdb_fetch(tdb, key);
 837         if(data.dptr == NULL)
 838         {
 839                 DEBUG(3,("_reg_perfcount_get_64: No data found for key [%s].\n", key.dptr));
 840                 return False;
 841         }
 842
 843         memset(buf, 0, PERFCOUNT_MAX_LEN);
 844         memcpy(buf, data.dptr, data.dsize);
 845         SAFE_FREE(data.dptr);
 846
 847         *retval = atof(buf);
 848
 849         return True;
 850 }
 851
 852 /*********************************************************************
 853 *********************************************************************/
 854
 855 static bool _reg_perfcount_init_data_block_perf(PERF_DATA_BLOCK *block,
 856                                                 TDB_CONTEXT *names)
 857 {
 858         uint64_t PerfFreq, PerfTime, PerfTime100nSec;
 859         TDB_CONTEXT *counters;
 860         bool status = False;
 861         const char *fname = counters_directory( DATA_DB );
 862
 863         counters = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
 864
 865         if(counters == NULL)
 866         {
 867                 DEBUG(1, ("reg_perfcount_init_data_block_perf: unable to open [%s].\n", fname));
 868                 return False;
 869         }
 870
 871         status = _reg_perfcount_get_64(&PerfFreq, names, 0, "PerfFreq");
 872         if(status == False)
 873         {
 874                 tdb_close(counters);
 875                 return status;
 876         }
 877         memcpy((void *)&(block->PerfFreq), (const void *)&PerfFreq, sizeof(PerfFreq));
 878
 879         status = _reg_perfcount_get_64(&PerfTime, counters, 0, "PerfTime");
 880         if(status == False)
 881         {
 882                 tdb_close(counters);
 883                 return status;
 884         }
 885         memcpy((void *)&(block->PerfTime), (const void *)&PerfTime, sizeof(PerfTime));
 886
 887         status = _reg_perfcount_get_64(&PerfTime100nSec, counters, 0, "PerfTime100nSec");
 888         if(status == False)
 889         {
 890                 tdb_close(counters);
 891                 return status;
 892         }
 893         memcpy((void *)&(block->PerfTime100nSec), (const void *)&PerfTime100nSec, sizeof(PerfTime100nSec));
 894
 895         tdb_close(counters);
 896         return True;
 897 }
 898
 899 /*********************************************************************
 900 *********************************************************************/
 901
 902 static bool _reg_perfcount_init_data_block(PERF_DATA_BLOCK *block,
 903                                            prs_struct *ps, TDB_CONTEXT *names)
 904 {
 905         smb_ucs2_t *temp = NULL;
 906         time_t tm;
 907
 908         if (rpcstr_push_talloc(ps->mem_ctx, &temp, "PERF")==(size_t)-1) {
 909                 return false;
 910         }
 911         if (!temp) {
 912                 return false;
 913         }
 914         memcpy(block->Signature, temp, strlen_w(temp) *2);
 915
 916         if(ps->bigendian_data == RPC_BIG_ENDIAN)
 917                 block->LittleEndian = 0;
 918         else
 919                 block->LittleEndian = 1;
 920         block->Version = 1;
 921         block->Revision = 1;
 922         block->TotalByteLength = 0;
 923         block->NumObjectTypes = 0;
 924         block->DefaultObject = -1;
 925         block->objects = NULL;
 926         tm = time(NULL);
 927         make_systemtime(&(block->SystemTime), gmtime(&tm));
 928         _reg_perfcount_init_data_block_perf(block, names);
 929         memset(temp, 0, sizeof(temp));
 930         rpcstr_push((void *)temp, global_myname(), sizeof(temp), STR_TERMINATE);
 931         block->SystemNameLength = (strlen_w(temp) * 2) + 2;
 932         block->data = TALLOC_ZERO_ARRAY(ps->mem_ctx, uint8, block->SystemNameLength + (8 - (block->SystemNameLength % 8)));
 933         if (block->data == NULL) {
 934                 return False;
 935         }
 936         memcpy(block->data, temp, block->SystemNameLength);
 937         block->SystemNameOffset = sizeof(PERF_DATA_BLOCK) - sizeof(block->objects) - sizeof(block->data);
 938         block->HeaderLength = block->SystemNameOffset + block->SystemNameLength;
 939         /* Make sure to adjust for 64-bit alignment for when we finish writing the system name,
 940            so that the PERF_OBJECT_TYPE struct comes out 64-bit aligned */
 941         block->HeaderLength += 8 - (block->HeaderLength % 8);
 942
 943         return True;
 944 }
 945
 946 /*********************************************************************
 947 *********************************************************************/
 948
 949 static uint32 _reg_perfcount_perf_data_block_fixup(PERF_DATA_BLOCK *block, prs_struct *ps)
 950 {
 951         int obj, cnt, inst, pad, i;
 952         PERF_OBJECT_TYPE *object;
 953         PERF_INSTANCE_DEFINITION *instance;
 954         PERF_COUNTER_DEFINITION *counter;
 955         PERF_COUNTER_BLOCK *counter_data;
 956         char *temp = NULL, *src_addr, *dst_addr;
 957
 958         block->TotalByteLength = 0;
 959         object = block->objects;
 960         for(obj = 0; obj < block->NumObjectTypes; obj++)
 961         {
 962                 object[obj].TotalByteLength = 0;
 963                 object[obj].DefinitionLength = 0;
 964                 instance = object[obj].instances;
 965                 counter = object[obj].counters;
 966                 for(cnt = 0; cnt < object[obj].NumCounters; cnt++)
 967                 {
 968                         object[obj].TotalByteLength += counter[cnt].ByteLength;
 969                         object[obj].DefinitionLength += counter[cnt].ByteLength;
 970                 }
 971                 if(object[obj].NumInstances != PERF_NO_INSTANCES)
 972                 {
 973                         for(inst = 0; inst < object[obj].NumInstances; inst++)
 974                         {
 975                                 instance = &(object[obj].instances[inst]);
 976                                 object[obj].TotalByteLength += instance->ByteLength;
 977                                 counter_data = &(instance->counter_data);
 978                                 counter = &(object[obj].counters[object[obj].NumCounters - 1]);
 979                                 counter_data->ByteLength = counter->CounterOffset + counter->CounterSize + sizeof(counter_data->ByteLength);
 980                                 temp = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
 981                                                             temp,
 982                                                             char,
 983                                                             counter_data->ByteLength- sizeof(counter_data->ByteLength));
 984                                 if (temp == NULL) {
 985                                         return 0;
 986                                 }
 987                                 memset(temp, 0, counter_data->ByteLength - sizeof(counter_data->ByteLength));
 988                                 src_addr = (char *)counter_data->data;
 989                                 for(i = 0; i < object[obj].NumCounters; i++)
 990                                 {
 991                                         counter = &(object[obj].counters[i]);
 992                                         dst_addr = temp + counter->CounterOffset - sizeof(counter_data->ByteLength);
 993                                         memcpy(dst_addr, src_addr, counter->CounterSize);
 994                                         src_addr += counter->CounterSize;
 995                                 }
 996                                 /* Make sure to be 64-bit aligned */
 997                                 if((pad = (counter_data->ByteLength % 8)))
 998                                 {
 999                                         pad = 8 - pad;
1000                                 }
1001                                 counter_data->data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
1002                                                                          counter_data->data,
1003                                                                          uint8,
1004                                                                          counter_data->ByteLength - sizeof(counter_data->ByteLength) + pad);
1005                                 if (counter_data->data == NULL) {
1006                                         return 0;
1007                                 }
1008                                 memset(counter_data->data, 0, counter_data->ByteLength - sizeof(counter_data->ByteLength) + pad);
1009                                 memcpy(counter_data->data, temp, counter_data->ByteLength - sizeof(counter_data->ByteLength));
1010                                 counter_data->ByteLength += pad;
1011                                 object[obj].TotalByteLength += counter_data->ByteLength;
1012                         }
1013                 }
1014                 else
1015                 {
1016                         /* Need to be 64-bit aligned at the end of the counter_data block, so pad counter_data to a 64-bit boundary,
1017                            so that the next PERF_OBJECT_TYPE can start on a 64-bit alignment */
1018                         if((pad = (object[obj].counter_data.ByteLength % 8)))
1019                         {
1020                                 pad = 8 - pad;
1021                                 object[obj].counter_data.data = TALLOC_REALLOC_ARRAY(ps->mem_ctx,
1022                                                                                      object[obj].counter_data.data,
1023                                                                                      uint8,
1024                                                                                      object[obj].counter_data.ByteLength + pad);
1025                                 memset((void *)(object[obj].counter_data.data + object[obj].counter_data.ByteLength), 0, pad);
1026                                 object[obj].counter_data.ByteLength += pad;
1027                         }
1028                         object[obj].TotalByteLength += object[obj].counter_data.ByteLength;
1029                 }
1030                 object[obj].HeaderLength = sizeof(*object) - (sizeof(counter) + sizeof(instance) + sizeof(PERF_COUNTER_BLOCK));
1031                 object[obj].TotalByteLength += object[obj].HeaderLength;
1032                 object[obj].DefinitionLength += object[obj].HeaderLength;
1033
1034                 block->TotalByteLength += object[obj].TotalByteLength;
1035         }
1036
1037         return block->TotalByteLength;
1038 }
1039
1040 /*********************************************************************
1041 *********************************************************************/
1042
1043 uint32 reg_perfcount_get_perf_data_block(uint32 base_index,
1044                                          prs_struct *ps,
1045                                          PERF_DATA_BLOCK *block,
1046                                          const char *object_ids)
1047 {
1048         uint32 buffer_size = 0;
1049         const char *fname = counters_directory( NAMES_DB );
1050         TDB_CONTEXT *names;
1051         int retval = 0;
1052
1053         names = tdb_open_log(fname, 0, TDB_DEFAULT, O_RDONLY, 0444);
1054
1055         if(names == NULL)
1056         {
1057                 DEBUG(1, ("reg_perfcount_get_perf_data_block: unable to open [%s].\n", fname));
1058                 return 0;
1059         }
1060
1061         if (!_reg_perfcount_init_data_block(block, ps, names)) {
1062                 DEBUG(0, ("_reg_perfcount_init_data_block failed\n"));
1063                 tdb_close(names);
1064                 return 0;
1065         }
1066
1067         reg_perfcount_get_last_counter(base_index);
1068
1069         if(object_ids == NULL)
1070         {
1071                 /* we're getting a request for "Global" here */
1072                 retval = _reg_perfcount_assemble_global(block, ps, base_index, names);
1073         }
1074         else
1075         {
1076                 /* we're getting a request for a specific set of PERF_OBJECT_TYPES */
1077                 retval = _reg_perfcount_assemble_global(block, ps, base_index, names);
1078         }
1079         buffer_size = _reg_perfcount_perf_data_block_fixup(block, ps);
1080
1081         tdb_close(names);
1082
1083         if (retval == -1) {
1084                 return 0;
1085         }
1086
1087         return buffer_size + block->HeaderLength;
1088 }
1089
1090 /*********************************************************************
1091 *********************************************************************/
1092
1093 static bool _reg_perfcount_marshall_perf_data_block(prs_struct *ps, PERF_DATA_BLOCK block, int depth)
1094 {
1095         int i;
1096         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_data_block");
1097         depth++;
1098
1099         if(!prs_align(ps))
1100                 return False;
1101         for(i = 0; i < 4; i++)
1102         {
1103                 if(!prs_uint16("Signature", ps, depth, &block.Signature[i]))
1104                         return False;
1105         }
1106         if(!prs_uint32("Little Endian", ps, depth, &block.LittleEndian))
1107                 return False;
1108         if(!prs_uint32("Version", ps, depth, &block.Version))
1109                 return False;
1110         if(!prs_uint32("Revision", ps, depth, &block.Revision))
1111                 return False;
1112         if(!prs_uint32("TotalByteLength", ps, depth, &block.TotalByteLength))
1113                 return False;
1114         if(!prs_uint32("HeaderLength", ps, depth, &block.HeaderLength))
1115                 return False;
1116         if(!prs_uint32("NumObjectTypes", ps, depth, &block.NumObjectTypes))
1117                 return False;
1118         if(!prs_uint32("DefaultObject", ps, depth, &block.DefaultObject))
1119                 return False;
1120         if(!spoolss_io_system_time("SystemTime", ps, depth, &block.SystemTime))
1121                 return False;
1122         if(!prs_uint32("Padding", ps, depth, &block.Padding))
1123                 return False;
1124         if(!prs_align_uint64(ps))
1125                 return False;
1126         if(!prs_uint64("PerfTime", ps, depth, &block.PerfTime))
1127                 return False;
1128         if(!prs_uint64("PerfFreq", ps, depth, &block.PerfFreq))
1129                 return False;
1130         if(!prs_uint64("PerfTime100nSec", ps, depth, &block.PerfTime100nSec))
1131                 return False;
1132         if(!prs_uint32("SystemNameLength", ps, depth, &block.SystemNameLength))
1133                 return False;
1134         if(!prs_uint32("SystemNameOffset", ps, depth, &block.SystemNameOffset))
1135                 return False;
1136         /* hack to make sure we're 64-bit aligned at the end of this whole mess */
1137         if(!prs_uint8s(False, "SystemName", ps, depth, block.data,
1138                        block.HeaderLength - block.SystemNameOffset))
1139                 return False;
1140
1141         return True;
1142 }
1143
1144 /*********************************************************************
1145 *********************************************************************/
1146
1147 static bool _reg_perfcount_marshall_perf_counters(prs_struct *ps,
1148                                                   PERF_OBJECT_TYPE object,
1149                                                   int depth)
1150 {
1151         int cnt;
1152         PERF_COUNTER_DEFINITION counter;
1153
1154         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_counters");
1155         depth++;
1156
1157         for(cnt = 0; cnt < object.NumCounters; cnt++)
1158         {
1159                 counter = object.counters[cnt];
1160
1161                 if(!prs_align(ps))
1162                         return False;
1163                 if(!prs_uint32("ByteLength", ps, depth, &counter.ByteLength))
1164                         return False;
1165                 if(!prs_uint32("CounterNameTitleIndex", ps, depth, &counter.CounterNameTitleIndex))
1166                         return False;
1167                 if(!prs_uint32("CounterNameTitlePointer", ps, depth, &counter.CounterNameTitlePointer))
1168                         return False;
1169                 if(!prs_uint32("CounterHelpTitleIndex", ps, depth, &counter.CounterHelpTitleIndex))
1170                         return False;
1171                 if(!prs_uint32("CounterHelpTitlePointer", ps, depth, &counter.CounterHelpTitlePointer))
1172                         return False;
1173                 if(!prs_uint32("DefaultScale", ps, depth, &counter.DefaultScale))
1174                         return False;
1175                 if(!prs_uint32("DetailLevel", ps, depth, &counter.DetailLevel))
1176                         return False;
1177                 if(!prs_uint32("CounterType", ps, depth, &counter.CounterType))
1178                         return False;
1179                 if(!prs_uint32("CounterSize", ps, depth, &counter.CounterSize))
1180                         return False;
1181                 if(!prs_uint32("CounterOffset", ps, depth, &counter.CounterOffset))
1182                         return False;
1183         }
1184
1185         return True;
1186 }
1187
1188 /*********************************************************************
1189 *********************************************************************/
1190
1191 static bool _reg_perfcount_marshall_perf_counter_data(prs_struct *ps,
1192                                                       PERF_COUNTER_BLOCK counter_data,
1193                                                       int depth)
1194 {
1195         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_counter_data");
1196         depth++;
1197
1198         if(!prs_align_uint64(ps))
1199                 return False;
1200
1201         if(!prs_uint32("ByteLength", ps, depth, &counter_data.ByteLength))
1202                 return False;
1203         if(!prs_uint8s(False, "CounterData", ps, depth, counter_data.data, counter_data.ByteLength - sizeof(uint32)))
1204                 return False;
1205         if(!prs_align_uint64(ps))
1206                 return False;
1207
1208         return True;
1209 }
1210
1211 /*********************************************************************
1212 *********************************************************************/
1213
1214 static bool _reg_perfcount_marshall_perf_instances(prs_struct *ps,
1215                                                    PERF_OBJECT_TYPE object,
1216                                                    int depth)
1217 {
1218         PERF_INSTANCE_DEFINITION instance;
1219         int inst;
1220
1221         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_instances");
1222         depth++;
1223
1224         for(inst = 0; inst < object.NumInstances; inst++)
1225         {
1226                 instance = object.instances[inst];
1227
1228                 if(!prs_align(ps))
1229                         return False;
1230                 if(!prs_uint32("ByteLength", ps, depth, &instance.ByteLength))
1231                         return False;
1232                 if(!prs_uint32("ParentObjectTitleIndex", ps, depth, &instance.ParentObjectTitleIndex))
1233                         return False;
1234                 if(!prs_uint32("ParentObjectTitlePointer", ps, depth, &instance.ParentObjectTitlePointer))
1235                         return False;
1236                 if(!prs_uint32("UniqueID", ps, depth, &instance.UniqueID))
1237                         return False;
1238                 if(!prs_uint32("NameOffset", ps, depth, &instance.NameOffset))
1239                         return False;
1240                 if(!prs_uint32("NameLength", ps, depth, &instance.NameLength))
1241                         return False;
1242                 if(!prs_uint8s(False, "InstanceName", ps, depth, instance.data,
1243                                instance.ByteLength - instance.NameOffset))
1244                         return False;
1245                 if(_reg_perfcount_marshall_perf_counter_data(ps, instance.counter_data, depth) == False)
1246                         return False;
1247         }
1248
1249         return True;
1250 }
1251
1252 /*********************************************************************
1253 *********************************************************************/
1254
1255 static bool _reg_perfcount_marshall_perf_objects(prs_struct *ps, PERF_DATA_BLOCK block, int depth)
1256 {
1257         int obj;
1258
1259         PERF_OBJECT_TYPE object;
1260
1261         prs_debug(ps, depth, "", "_reg_perfcount_marshall_perf_objects");
1262         depth++;
1263
1264         for(obj = 0; obj < block.NumObjectTypes; obj++)
1265         {
1266                 object = block.objects[obj];
1267
1268                 if(!prs_align(ps))
1269                         return False;
1270
1271                 if(!prs_uint32("TotalByteLength", ps, depth, &object.TotalByteLength))
1272                         return False;
1273                 if(!prs_uint32("DefinitionLength", ps, depth, &object.DefinitionLength))
1274                         return False;
1275                 if(!prs_uint32("HeaderLength", ps, depth, &object.HeaderLength))
1276                         return False;
1277                 if(!prs_uint32("ObjectNameTitleIndex", ps, depth, &object.ObjectNameTitleIndex))
1278                         return False;
1279                 if(!prs_uint32("ObjectNameTitlePointer", ps, depth, &object.ObjectNameTitlePointer))
1280                         return False;
1281                 if(!prs_uint32("ObjectHelpTitleIndex", ps, depth, &object.ObjectHelpTitleIndex))
1282                         return False;
1283                 if(!prs_uint32("ObjectHelpTitlePointer", ps, depth, &object.ObjectHelpTitlePointer))
1284                         return False;
1285                 if(!prs_uint32("DetailLevel", ps, depth, &object.DetailLevel))
1286                         return False;
1287                 if(!prs_uint32("NumCounters", ps, depth, &object.NumCounters))
1288                         return False;
1289                 if(!prs_uint32("DefaultCounter", ps, depth, &object.DefaultCounter))
1290                         return False;
1291                 if(!prs_uint32("NumInstances", ps, depth, &object.NumInstances))
1292                         return False;
1293                 if(!prs_uint32("CodePage", ps, depth, &object.CodePage))
1294                         return False;
1295                 if(!prs_align_uint64(ps))
1296                         return False;
1297                 if(!prs_uint64("PerfTime", ps, depth, &object.PerfTime))
1298                         return False;
1299                 if(!prs_uint64("PerfFreq", ps, depth, &object.PerfFreq))
1300                         return False;
1301
1302                 /* Now do the counters */
1303                 /* If no instances, encode counter_data */
1304                 /* If instances, encode instace plus counter data for each instance */
1305                 if(_reg_perfcount_marshall_perf_counters(ps, object, depth) == False)
1306                         return False;
1307                 if(object.NumInstances == PERF_NO_INSTANCES)
1308                 {
1309                         if(_reg_perfcount_marshall_perf_counter_data(ps, object.counter_data, depth) == False)
1310                                 return False;
1311                 }
1312                 else
1313                 {
1314                         if(_reg_perfcount_marshall_perf_instances(ps, object, depth) == False)
1315                                 return False;
1316                 }
1317         }
1318
1319         return True;
1320 }
1321
1322 /*********************************************************************
1323 *********************************************************************/
1324
1325 static bool _reg_perfcount_marshall_hkpd(prs_struct *ps, PERF_DATA_BLOCK block)
1326 {
1327         int depth = 0;
1328         if(_reg_perfcount_marshall_perf_data_block(ps, block, depth) == True)
1329         {
1330                 if(_reg_perfcount_marshall_perf_objects(ps, block, depth) == True)
1331                         return True;
1332         }
1333         return False;
1334 }
1335
1336 /*********************************************************************
1337 *********************************************************************/
1338
1339 WERROR reg_perfcount_get_hkpd(prs_struct *ps, uint32 max_buf_size, uint32 *outbuf_len, const char *object_ids)
1340 {
1341         /*
1342          * For a detailed description of the layout of this structure,
1343          * see http://msdn.microsoft.com/library/default.asp?url=/library/en-us/perfmon/base/performance_data_format.asp
1344          *
1345          * By 2006-11-23 this link did not work anymore, I found something
1346          * promising under
1347          * http://msdn2.microsoft.com/en-us/library/aa373105.aspx -- vl
1348          */
1349         PERF_DATA_BLOCK block;
1350         uint32 buffer_size, base_index;
1351
1352         buffer_size = 0;
1353         base_index = reg_perfcount_get_base_index();
1354         ZERO_STRUCT(block);
1355
1356         buffer_size = reg_perfcount_get_perf_data_block(base_index, ps, &block, object_ids);
1357
1358         if(buffer_size < max_buf_size)
1359         {
1360                 *outbuf_len = buffer_size;
1361                 if(_reg_perfcount_marshall_hkpd(ps, block) == True)
1362                         return WERR_OK;
1363                 else
1364                         return WERR_NOMEM;
1365         }
1366         else
1367         {
1368                 *outbuf_len = max_buf_size;
1369                 _reg_perfcount_marshall_perf_data_block(ps, block, 0);
1370                 return WERR_INSUFFICIENT_BUFFER;
1371         }
1372 }