dlls/kernelbase/sync.c

   1 /*
   2  * Kernel synchronization objects
   3  *
   4  * Copyright 1998 Alexandre Julliard
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include <stdarg.h>
  22 #include <string.h>
  23 #include <stdio.h>
  24
  25 #include "ntstatus.h"
  26 #define WIN32_NO_STATUS
  27 #define NONAMELESSUNION
  28 #include "windef.h"
  29 #include "winbase.h"
  30 #include "winerror.h"
  31 #include "winnls.h"
  32 #include "winternl.h"
  33 #include "winioctl.h"
  34 #include "ddk/wdm.h"
  35
  36 #include "kernelbase.h"
  37 #include "wine/asm.h"
  38 #include "wine/debug.h"
  39
  40 WINE_DEFAULT_DEBUG_CHANNEL(sync);
  41
  42 /* check if current version is NT or Win95 */
  43 static inline BOOL is_version_nt(void)
  44 {
  45     return !(GetVersion() & 0x80000000);
  46 }
  47
  48 /* helper for kernel32->ntdll timeout format conversion */
  49 static inline LARGE_INTEGER *get_nt_timeout( LARGE_INTEGER *time, DWORD timeout )
  50 {
  51     if (timeout == INFINITE) return NULL;
  52     time->QuadPart = (ULONGLONG)timeout * -10000;
  53     return time;
  54 }
  55
  56
  57 /***********************************************************************
  58  *              BaseGetNamedObjectDirectory  (kernelbase.@)
  59  */
  60 NTSTATUS WINAPI BaseGetNamedObjectDirectory( HANDLE *dir )
  61 {
  62     static HANDLE handle;
  63     static const WCHAR basenameW[] = {'\\','S','e','s','s','i','o','n','s','\\','%','u',
  64                                       '\\','B','a','s','e','N','a','m','e','d','O','b','j','e','c','t','s',0};
  65     WCHAR buffer[64];
  66     UNICODE_STRING str;
  67     OBJECT_ATTRIBUTES attr;
  68     NTSTATUS status = STATUS_SUCCESS;
  69
  70     if (!handle)
  71     {
  72         HANDLE dir;
  73
  74         swprintf( buffer, ARRAY_SIZE(buffer), basenameW, NtCurrentTeb()->Peb->SessionId );
  75         RtlInitUnicodeString( &str, buffer );
  76         InitializeObjectAttributes(&attr, &str, 0, 0, NULL);
  77         status = NtOpenDirectoryObject( &dir, DIRECTORY_CREATE_OBJECT|DIRECTORY_TRAVERSE, &attr );
  78         if (!status && InterlockedCompareExchangePointer( &handle, dir, 0 ) != 0)
  79         {
  80             /* someone beat us here... */
  81             CloseHandle( dir );
  82         }
  83     }
  84     *dir = handle;
  85     return status;
  86 }
  87
  88 static void get_create_object_attributes( OBJECT_ATTRIBUTES *attr, UNICODE_STRING *nameW,
  89                                           SECURITY_ATTRIBUTES *sa, const WCHAR *name )
  90 {
  91     attr->Length                   = sizeof(*attr);
  92     attr->RootDirectory            = 0;
  93     attr->ObjectName               = NULL;
  94     attr->Attributes               = OBJ_OPENIF | ((sa && sa->bInheritHandle) ? OBJ_INHERIT : 0);
  95     attr->SecurityDescriptor       = sa ? sa->lpSecurityDescriptor : NULL;
  96     attr->SecurityQualityOfService = NULL;
  97     if (name)
  98     {
  99         RtlInitUnicodeString( nameW, name );
 100         attr->ObjectName = nameW;
 101         BaseGetNamedObjectDirectory( &attr->RootDirectory );
 102     }
 103 }
 104
 105 static BOOL get_open_object_attributes( OBJECT_ATTRIBUTES *attr, UNICODE_STRING *nameW,
 106                                         BOOL inherit, const WCHAR *name )
 107 {
 108     HANDLE dir;
 109
 110     if (!name)
 111     {
 112         SetLastError( ERROR_INVALID_PARAMETER );
 113         return FALSE;
 114     }
 115     RtlInitUnicodeString( nameW, name );
 116     BaseGetNamedObjectDirectory( &dir );
 117     InitializeObjectAttributes( attr, nameW, inherit ? OBJ_INHERIT : 0, dir, NULL );
 118     return TRUE;
 119 }
 120
 121
 122 /***********************************************************************
 123  * Events
 124  ***********************************************************************/
 125
 126
 127 /***********************************************************************
 128  *           CreateEventA    (kernelbase.@)
 129  */
 130 HANDLE WINAPI DECLSPEC_HOTPATCH CreateEventA( SECURITY_ATTRIBUTES *sa, BOOL manual_reset,
 131                                               BOOL initial_state, LPCSTR name )
 132 {
 133     DWORD flags = 0;
 134
 135     if (manual_reset) flags |= CREATE_EVENT_MANUAL_RESET;
 136     if (initial_state) flags |= CREATE_EVENT_INITIAL_SET;
 137     return CreateEventExA( sa, name, flags, EVENT_ALL_ACCESS );
 138 }
 139
 140
 141 /***********************************************************************
 142  *           CreateEventW    (kernelbase.@)
 143  */
 144 HANDLE WINAPI DECLSPEC_HOTPATCH CreateEventW( SECURITY_ATTRIBUTES *sa, BOOL manual_reset,
 145                                               BOOL initial_state, LPCWSTR name )
 146 {
 147     DWORD flags = 0;
 148
 149     if (manual_reset) flags |= CREATE_EVENT_MANUAL_RESET;
 150     if (initial_state) flags |= CREATE_EVENT_INITIAL_SET;
 151     return CreateEventExW( sa, name, flags, EVENT_ALL_ACCESS );
 152 }
 153
 154
 155 /***********************************************************************
 156  *           CreateEventExA    (kernelbase.@)
 157  */
 158 HANDLE WINAPI DECLSPEC_HOTPATCH CreateEventExA( SECURITY_ATTRIBUTES *sa, LPCSTR name,
 159                                                 DWORD flags, DWORD access )
 160 {
 161     WCHAR buffer[MAX_PATH];
 162
 163     if (!name) return CreateEventExW( sa, NULL, flags, access );
 164
 165     if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
 166     {
 167         SetLastError( ERROR_FILENAME_EXCED_RANGE );
 168         return 0;
 169     }
 170     return CreateEventExW( sa, buffer, flags, access );
 171 }
 172
 173
 174 /***********************************************************************
 175  *           CreateEventExW    (kernelbase.@)
 176  */
 177 HANDLE WINAPI DECLSPEC_HOTPATCH CreateEventExW( SECURITY_ATTRIBUTES *sa, LPCWSTR name,
 178                                                 DWORD flags, DWORD access )
 179 {
 180     HANDLE ret = 0;
 181     UNICODE_STRING nameW;
 182     OBJECT_ATTRIBUTES attr;
 183     NTSTATUS status;
 184
 185     /* one buggy program needs this
 186      * ("Van Dale Groot woordenboek der Nederlandse taal")
 187      */
 188     if (sa && IsBadReadPtr(sa,sizeof(SECURITY_ATTRIBUTES)))
 189     {
 190         ERR("Bad security attributes pointer %p\n",sa);
 191         SetLastError( ERROR_INVALID_PARAMETER);
 192         return 0;
 193     }
 194
 195     get_create_object_attributes( &attr, &nameW, sa, name );
 196
 197     status = NtCreateEvent( &ret, access, &attr,
 198                             (flags & CREATE_EVENT_MANUAL_RESET) ? NotificationEvent : SynchronizationEvent,
 199                             (flags & CREATE_EVENT_INITIAL_SET) != 0 );
 200     if (status == STATUS_OBJECT_NAME_EXISTS)
 201         SetLastError( ERROR_ALREADY_EXISTS );
 202     else
 203         SetLastError( RtlNtStatusToDosError(status) );
 204     return ret;
 205 }
 206
 207
 208 /***********************************************************************
 209  *           OpenEventA    (kernelbase.@)
 210  */
 211 HANDLE WINAPI DECLSPEC_HOTPATCH OpenEventA( DWORD access, BOOL inherit, LPCSTR name )
 212 {
 213     WCHAR buffer[MAX_PATH];
 214
 215     if (!name) return OpenEventW( access, inherit, NULL );
 216
 217     if (!MultiByteToWideChar( CP_ACP, 0, name, -1, buffer, MAX_PATH ))
 218     {
 219         SetLastError( ERROR_FILENAME_EXCED_RANGE );
 220         return 0;
 221     }
 222     return OpenEventW( access, inherit, buffer );
 223 }
 224
 225
 226 /***********************************************************************
 227  *           OpenEventW    (kernelbase.@)
 228  */
 229 HANDLE WINAPI DECLSPEC_HOTPATCH OpenEventW( DWORD access, BOOL inherit, LPCWSTR name )
 230 {
 231     HANDLE ret;
 232     UNICODE_STRING nameW;
 233     OBJECT_ATTRIBUTES attr;
 234     NTSTATUS status;
 235
 236     if (!is_version_nt()) access = EVENT_ALL_ACCESS;
 237
 238     if (!get_open_object_attributes( &attr, &nameW, inherit, name )) return 0;
 239
 240     status = NtOpenEvent( &ret, access, &attr );
 241     if (status != STATUS_SUCCESS)
 242     {
 243         SetLastError( RtlNtStatusToDosError(status) );
 244         return 0;
 245     }
 246     return ret;
 247 }
 248
 249 /***********************************************************************
 250  *           PulseEvent    (kernelbase.@)
 251  */
 252 BOOL WINAPI DECLSPEC_HOTPATCH PulseEvent( HANDLE handle )
 253 {
 254     return set_ntstatus( NtPulseEvent( handle, NULL ));
 255 }
 256
 257
 258 /***********************************************************************
 259  *           SetEvent    (kernelbase.@)
 260  */
 261 BOOL WINAPI DECLSPEC_HOTPATCH SetEvent( HANDLE handle )
 262 {
 263     return set_ntstatus( NtSetEvent( handle, NULL ));
 264 }
 265
 266
 267 /***********************************************************************
 268  *           ResetEvent    (kernelbase.@)
 269  */
 270 BOOL WINAPI DECLSPEC_HOTPATCH ResetEvent( HANDLE handle )
 271 {
 272     return set_ntstatus( NtResetEvent( handle, NULL ));
 273 }
 274
 275
 276 /***********************************************************************
 277  * Mutexes
 278  ***********************************************************************/
 279
 280
 281 /***********************************************************************
 282  *           CreateMutexA   (kernelbase.@)
 283  */
 284 HANDLE WINAPI DECLSPEC_HOTPATCH CreateMutexA( SECURITY_ATTRIBUTES *sa, BOOL owner, LPCSTR name )
 285 {
 286     return CreateMutexExA( sa, name, owner ? CREATE_MUTEX_INITIAL_OWNER : 0, MUTEX_ALL_ACCESS );
 287 }
 288
 289
 290 /***********************************************************************
 291  *           CreateMutexW   (kernelbase.@)
 292  */
 293 HANDLE WINAPI DECLSPEC_HOTPATCH CreateMutexW( SECURITY_ATTRIBUTES *sa, BOOL owner, LPCWSTR name )
 294 {
 295     return CreateMutexExW( sa, name, owner ? CREATE_MUTEX_INITIAL_OWNER : 0, MUTEX_ALL_ACCESS );
 296 }
 297
 298
 299 /***********************************************************************
 300  *           CreateMutexExA   (kernelbase.@)
 301  */
 302 HANDLE WINAPI DECLSPEC_HOTPATCH CreateMutexExA( SECURITY_ATTRIBUTES *sa, LPCSTR name,
 303                                                 DWORD flags, DWORD access )
 304 {
 305     ANSI_STRING nameA;
 306     NTSTATUS status;
 307
 308     if (!name) return CreateMutexExW( sa, NULL, flags, access );
 309
 310     RtlInitAnsiString( &nameA, name );
 311     status = RtlAnsiStringToUnicodeString( &NtCurrentTeb()->StaticUnicodeString, &nameA, FALSE );
 312     if (status != STATUS_SUCCESS)
 313     {
 314         SetLastError( ERROR_FILENAME_EXCED_RANGE );
 315         return 0;
 316     }
 317     return CreateMutexExW( sa, NtCurrentTeb()->StaticUnicodeString.Buffer, flags, access );
 318 }
 319
 320
 321 /***********************************************************************
 322  *           CreateMutexExW   (kernelbase.@)
 323  */
 324 HANDLE WINAPI DECLSPEC_HOTPATCH CreateMutexExW( SECURITY_ATTRIBUTES *sa, LPCWSTR name,
 325                                                 DWORD flags, DWORD access )
 326 {
 327     HANDLE ret = 0;
 328     UNICODE_STRING nameW;
 329     OBJECT_ATTRIBUTES attr;
 330     NTSTATUS status;
 331
 332     get_create_object_attributes( &attr, &nameW, sa, name );
 333
 334     status = NtCreateMutant( &ret, access, &attr, (flags & CREATE_MUTEX_INITIAL_OWNER) != 0 );
 335     if (status == STATUS_OBJECT_NAME_EXISTS)
 336         SetLastError( ERROR_ALREADY_EXISTS );
 337     else
 338         SetLastError( RtlNtStatusToDosError(status) );
 339     return ret;
 340 }
 341
 342
 343 /***********************************************************************
 344  *           OpenMutexW   (kernelbase.@)
 345  */
 346 HANDLE WINAPI DECLSPEC_HOTPATCH OpenMutexW( DWORD access, BOOL inherit, LPCWSTR name )
 347 {
 348     HANDLE ret;
 349     UNICODE_STRING nameW;
 350     OBJECT_ATTRIBUTES attr;
 351     NTSTATUS status;
 352
 353     if (!is_version_nt()) access = MUTEX_ALL_ACCESS;
 354
 355     if (!get_open_object_attributes( &attr, &nameW, inherit, name )) return 0;
 356
 357     status = NtOpenMutant( &ret, access, &attr );
 358     if (status != STATUS_SUCCESS)
 359     {
 360         SetLastError( RtlNtStatusToDosError(status) );
 361         return 0;
 362     }
 363     return ret;
 364 }
 365
 366
 367 /***********************************************************************
 368  *           ReleaseMutex   (kernelbase.@)
 369  */
 370 BOOL WINAPI DECLSPEC_HOTPATCH ReleaseMutex( HANDLE handle )
 371 {
 372     return set_ntstatus( NtReleaseMutant( handle, NULL ));
 373 }
 374
 375
 376 /***********************************************************************
 377  * Semaphores
 378  ***********************************************************************/
 379
 380
 381 /***********************************************************************
 382  *           CreateSemaphoreW   (kernelbase.@)
 383  */
 384 HANDLE WINAPI DECLSPEC_HOTPATCH CreateSemaphoreW( SECURITY_ATTRIBUTES *sa, LONG initial,
 385                                                   LONG max, LPCWSTR name )
 386 {
 387     return CreateSemaphoreExW( sa, initial, max, name, 0, SEMAPHORE_ALL_ACCESS );
 388 }
 389
 390
 391 /***********************************************************************
 392  *           CreateSemaphoreExW   (kernelbase.@)
 393  */
 394 HANDLE WINAPI DECLSPEC_HOTPATCH CreateSemaphoreExW( SECURITY_ATTRIBUTES *sa, LONG initial, LONG max,
 395                                                     LPCWSTR name, DWORD flags, DWORD access )
 396 {
 397     HANDLE ret = 0;
 398     UNICODE_STRING nameW;
 399     OBJECT_ATTRIBUTES attr;
 400     NTSTATUS status;
 401
 402     get_create_object_attributes( &attr, &nameW, sa, name );
 403
 404     status = NtCreateSemaphore( &ret, access, &attr, initial, max );
 405     if (status == STATUS_OBJECT_NAME_EXISTS)
 406         SetLastError( ERROR_ALREADY_EXISTS );
 407     else
 408         SetLastError( RtlNtStatusToDosError(status) );
 409     return ret;
 410 }
 411
 412
 413 /***********************************************************************
 414  *           OpenSemaphoreW   (kernelbase.@)
 415  */
 416 HANDLE WINAPI DECLSPEC_HOTPATCH OpenSemaphoreW( DWORD access, BOOL inherit, LPCWSTR name )
 417 {
 418     HANDLE ret;
 419     UNICODE_STRING nameW;
 420     OBJECT_ATTRIBUTES attr;
 421     NTSTATUS status;
 422
 423     if (!is_version_nt()) access = SEMAPHORE_ALL_ACCESS;
 424
 425     if (!get_open_object_attributes( &attr, &nameW, inherit, name )) return 0;
 426
 427     status = NtOpenSemaphore( &ret, access, &attr );
 428     if (status != STATUS_SUCCESS)
 429     {
 430         SetLastError( RtlNtStatusToDosError(status) );
 431         return 0;
 432     }
 433     return ret;
 434 }
 435
 436
 437 /***********************************************************************
 438  *           ReleaseSemaphore   (kernelbase.@)
 439  */
 440 BOOL WINAPI DECLSPEC_HOTPATCH ReleaseSemaphore( HANDLE handle, LONG count, LONG *previous )
 441 {
 442     return set_ntstatus( NtReleaseSemaphore( handle, count, (PULONG)previous ));
 443 }
 444
 445
 446 /***********************************************************************
 447  * Waitable timers
 448  ***********************************************************************/
 449
 450
 451 /***********************************************************************
 452  *           CreateWaitableTimerW    (kernelbase.@)
 453  */
 454 HANDLE WINAPI DECLSPEC_HOTPATCH CreateWaitableTimerW( SECURITY_ATTRIBUTES *sa, BOOL manual, LPCWSTR name )
 455 {
 456     return CreateWaitableTimerExW( sa, name, manual ? CREATE_WAITABLE_TIMER_MANUAL_RESET : 0,
 457                                    TIMER_ALL_ACCESS );
 458 }
 459
 460
 461 /***********************************************************************
 462  *           CreateWaitableTimerExW    (kernelbase.@)
 463  */
 464 HANDLE WINAPI DECLSPEC_HOTPATCH CreateWaitableTimerExW( SECURITY_ATTRIBUTES *sa, LPCWSTR name,
 465                                                         DWORD flags, DWORD access )
 466 {
 467     HANDLE handle;
 468     NTSTATUS status;
 469     UNICODE_STRING nameW;
 470     OBJECT_ATTRIBUTES attr;
 471
 472     get_create_object_attributes( &attr, &nameW, sa, name );
 473
 474     status = NtCreateTimer( &handle, access, &attr,
 475                  (flags & CREATE_WAITABLE_TIMER_MANUAL_RESET) ? NotificationTimer : SynchronizationTimer );
 476     if (status == STATUS_OBJECT_NAME_EXISTS)
 477         SetLastError( ERROR_ALREADY_EXISTS );
 478     else
 479         SetLastError( RtlNtStatusToDosError(status) );
 480     return handle;
 481 }
 482
 483
 484 /***********************************************************************
 485  *           OpenWaitableTimerW    (kernelbase.@)
 486  */
 487 HANDLE WINAPI DECLSPEC_HOTPATCH OpenWaitableTimerW( DWORD access, BOOL inherit, LPCWSTR name )
 488 {
 489     HANDLE handle;
 490     UNICODE_STRING nameW;
 491     OBJECT_ATTRIBUTES attr;
 492     NTSTATUS status;
 493
 494     if (!is_version_nt()) access = TIMER_ALL_ACCESS;
 495
 496     if (!get_open_object_attributes( &attr, &nameW, inherit, name )) return 0;
 497
 498     status = NtOpenTimer( &handle, access, &attr );
 499     if (status != STATUS_SUCCESS)
 500     {
 501         SetLastError( RtlNtStatusToDosError(status) );
 502         return 0;
 503     }
 504     return handle;
 505 }
 506
 507
 508 /***********************************************************************
 509  *           SetWaitableTimer    (kernelbase.@)
 510  */
 511 BOOL WINAPI DECLSPEC_HOTPATCH SetWaitableTimer( HANDLE handle, const LARGE_INTEGER *when, LONG period,
 512                                                 PTIMERAPCROUTINE callback, LPVOID arg, BOOL resume )
 513 {
 514     NTSTATUS status = NtSetTimer( handle, when, (PTIMER_APC_ROUTINE)callback,
 515                                   arg, resume, period, NULL );
 516     return set_ntstatus( status ) || status == STATUS_TIMER_RESUME_IGNORED;
 517 }
 518
 519
 520 /***********************************************************************
 521  *           SetWaitableTimerEx    (kernelbase.@)
 522  */
 523 BOOL WINAPI DECLSPEC_HOTPATCH SetWaitableTimerEx( HANDLE handle, const LARGE_INTEGER *when, LONG period,
 524                                                   PTIMERAPCROUTINE callback, LPVOID arg,
 525                                                   REASON_CONTEXT *context, ULONG tolerabledelay )
 526 {
 527     static int once;
 528     if (!once++) FIXME( "(%p, %p, %d, %p, %p, %p, %d) semi-stub\n",
 529                         handle, when, period, callback, arg, context, tolerabledelay );
 530
 531     return SetWaitableTimer( handle, when, period, callback, arg, FALSE );
 532 }
 533
 534
 535 /***********************************************************************
 536  *           CancelWaitableTimer    (kernelbase.@)
 537  */
 538 BOOL WINAPI DECLSPEC_HOTPATCH CancelWaitableTimer( HANDLE handle )
 539 {
 540     return set_ntstatus( NtCancelTimer( handle, NULL ));
 541 }
 542
 543
 544 /***********************************************************************
 545  * Timer queues
 546  ***********************************************************************/
 547
 548
 549 /***********************************************************************
 550  *           CreateTimerQueue  (kernelbase.@)
 551  */
 552 HANDLE WINAPI DECLSPEC_HOTPATCH CreateTimerQueue(void)
 553 {
 554     HANDLE q;
 555     NTSTATUS status = RtlCreateTimerQueue( &q );
 556
 557     if (status != STATUS_SUCCESS)
 558     {
 559         SetLastError( RtlNtStatusToDosError( status ));
 560         return NULL;
 561     }
 562     return q;
 563 }
 564
 565
 566 /***********************************************************************
 567  *           CreateTimerQueueTimer  (kernelbase.@)
 568  */
 569 BOOL WINAPI DECLSPEC_HOTPATCH CreateTimerQueueTimer( PHANDLE timer, HANDLE queue,
 570                                                      WAITORTIMERCALLBACK callback, PVOID arg,
 571                                                      DWORD when, DWORD period, ULONG flags )
 572 {
 573     return set_ntstatus( RtlCreateTimer( timer, queue, callback, arg, when, period, flags ));
 574 }
 575
 576
 577 /***********************************************************************
 578  *           ChangeTimerQueueTimer  (kernelbase.@)
 579  */
 580 BOOL WINAPI DECLSPEC_HOTPATCH ChangeTimerQueueTimer( HANDLE queue, HANDLE timer,
 581                                                      ULONG when, ULONG period )
 582 {
 583     return set_ntstatus( RtlUpdateTimer( queue, timer, when, period ));
 584 }
 585
 586
 587 /***********************************************************************
 588  *           DeleteTimerQueueEx  (kernelbase.@)
 589  */
 590 BOOL WINAPI DECLSPEC_HOTPATCH DeleteTimerQueueEx( HANDLE queue, HANDLE event )
 591 {
 592     return set_ntstatus( RtlDeleteTimerQueueEx( queue, event ));
 593 }
 594
 595
 596 /***********************************************************************
 597  *           DeleteTimerQueueTimer  (kernelbase.@)
 598  */
 599 BOOL WINAPI DECLSPEC_HOTPATCH DeleteTimerQueueTimer( HANDLE queue, HANDLE timer, HANDLE event )
 600 {
 601     return set_ntstatus( RtlDeleteTimer( queue, timer, event ));
 602 }
 603
 604
 605 /***********************************************************************
 606  * Critical sections
 607  ***********************************************************************/
 608
 609
 610 /***********************************************************************
 611  *           InitializeCriticalSectionAndSpinCount   (kernelbase.@)
 612  */
 613 BOOL WINAPI DECLSPEC_HOTPATCH InitializeCriticalSectionAndSpinCount( CRITICAL_SECTION *crit, DWORD count )
 614 {
 615     return !RtlInitializeCriticalSectionAndSpinCount( crit, count );
 616 }
 617
 618 /***********************************************************************
 619  *           InitializeCriticalSectionEx   (kernelbase.@)
 620  */
 621 BOOL WINAPI DECLSPEC_HOTPATCH InitializeCriticalSectionEx( CRITICAL_SECTION *crit, DWORD spincount,
 622                                                            DWORD flags )
 623 {
 624     NTSTATUS ret = RtlInitializeCriticalSectionEx( crit, spincount, flags );
 625     if (ret) RtlRaiseStatus( ret );
 626     return !ret;
 627 }
 628
 629
 630 /***********************************************************************
 631  * File mappings
 632  ***********************************************************************/
 633
 634
 635 /***********************************************************************
 636  *             CreateFileMappingW   (kernelbase.@)
 637  */
 638 HANDLE WINAPI DECLSPEC_HOTPATCH CreateFileMappingW( HANDLE file, LPSECURITY_ATTRIBUTES sa, DWORD protect,
 639                                                     DWORD size_high, DWORD size_low, LPCWSTR name )
 640 {
 641     static const int sec_flags = (SEC_FILE | SEC_IMAGE | SEC_RESERVE | SEC_COMMIT |
 642                                   SEC_NOCACHE | SEC_WRITECOMBINE | SEC_LARGE_PAGES);
 643     HANDLE ret;
 644     NTSTATUS status;
 645     DWORD access, sec_type;
 646     LARGE_INTEGER size;
 647     UNICODE_STRING nameW;
 648     OBJECT_ATTRIBUTES attr;
 649
 650     sec_type = protect & sec_flags;
 651     protect &= ~sec_flags;
 652     if (!sec_type) sec_type = SEC_COMMIT;
 653
 654     /* Win9x compatibility */
 655     if (!protect && !is_version_nt()) protect = PAGE_READONLY;
 656
 657     switch(protect)
 658     {
 659     case PAGE_READONLY:
 660     case PAGE_WRITECOPY:
 661         access = STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ;
 662         break;
 663     case PAGE_READWRITE:
 664         access = STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ | SECTION_MAP_WRITE;
 665         break;
 666     case PAGE_EXECUTE_READ:
 667     case PAGE_EXECUTE_WRITECOPY:
 668         access = STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ | SECTION_MAP_EXECUTE;
 669         break;
 670     case PAGE_EXECUTE_READWRITE:
 671         access = STANDARD_RIGHTS_REQUIRED | SECTION_QUERY | SECTION_MAP_READ | SECTION_MAP_WRITE | SECTION_MAP_EXECUTE;
 672         break;
 673     default:
 674         SetLastError( ERROR_INVALID_PARAMETER );
 675         return 0;
 676     }
 677
 678     size.u.LowPart  = size_low;
 679     size.u.HighPart = size_high;
 680
 681     if (file == INVALID_HANDLE_VALUE)
 682     {
 683         file = 0;
 684         if (!size.QuadPart)
 685         {
 686             SetLastError( ERROR_INVALID_PARAMETER );
 687             return 0;
 688         }
 689     }
 690
 691     get_create_object_attributes( &attr, &nameW, sa, name );
 692
 693     status = NtCreateSection( &ret, access, &attr, &size, protect, sec_type, file );
 694     if (status == STATUS_OBJECT_NAME_EXISTS)
 695         SetLastError( ERROR_ALREADY_EXISTS );
 696     else
 697         SetLastError( RtlNtStatusToDosError(status) );
 698     return ret;
 699 }
 700
 701
 702 /***********************************************************************
 703  *             OpenFileMappingW   (kernelbase.@)
 704  */
 705 HANDLE WINAPI DECLSPEC_HOTPATCH OpenFileMappingW( DWORD access, BOOL inherit, LPCWSTR name )
 706 {
 707     OBJECT_ATTRIBUTES attr;
 708     UNICODE_STRING nameW;
 709     HANDLE ret;
 710     NTSTATUS status;
 711
 712     if (!get_open_object_attributes( &attr, &nameW, inherit, name )) return 0;
 713
 714     if (access == FILE_MAP_COPY) access = SECTION_MAP_READ;
 715
 716     if (!is_version_nt())
 717     {
 718         /* win9x doesn't do access checks, so try with full access first */
 719         if (!NtOpenSection( &ret, access | SECTION_MAP_READ | SECTION_MAP_WRITE, &attr )) return ret;
 720     }
 721
 722     status = NtOpenSection( &ret, access, &attr );
 723     if (status != STATUS_SUCCESS)
 724     {
 725         SetLastError( RtlNtStatusToDosError(status) );
 726         return 0;
 727     }
 728     return ret;
 729 }
 730
 731
 732 /***********************************************************************
 733  * Condition variables
 734  ***********************************************************************/
 735
 736
 737 /***********************************************************************
 738  *           SleepConditionVariableCS   (kernelbase.@)
 739  */
 740 BOOL WINAPI DECLSPEC_HOTPATCH SleepConditionVariableCS( CONDITION_VARIABLE *variable,
 741                                                         CRITICAL_SECTION *crit, DWORD timeout )
 742 {
 743     LARGE_INTEGER time;
 744
 745     return set_ntstatus( RtlSleepConditionVariableCS( variable, crit, get_nt_timeout( &time, timeout )));
 746 }
 747
 748
 749 /***********************************************************************
 750  *           SleepConditionVariableSRW   (kernelbase.@)
 751  */
 752 BOOL WINAPI DECLSPEC_HOTPATCH SleepConditionVariableSRW( RTL_CONDITION_VARIABLE *variable,
 753                                                          RTL_SRWLOCK *lock, DWORD timeout, ULONG flags )
 754 {
 755     LARGE_INTEGER time;
 756
 757     return set_ntstatus( RtlSleepConditionVariableSRW( variable, lock,
 758                                                        get_nt_timeout( &time, timeout ), flags ));
 759 }