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wine-wine/dlls/ntdll/rtl.c

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/*
* NT basis DLL
*
* This file contains the Rtl* API functions. These should be implementable.
*
* Copyright 1996-1998 Marcus Meissner
* 1999 Alex Korobka
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include "wine/debug.h"
#include "windef.h"
#include "winerror.h"
#include "stackframe.h"
#include "winternl.h"
#include "winreg.h"
WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
static RTL_CRITICAL_SECTION peb_lock = CRITICAL_SECTION_INIT("peb_lock");
/*
* resource functions
*/
/***********************************************************************
* RtlInitializeResource (NTDLL.@)
*
* xxxResource() functions implement multiple-reader-single-writer lock.
* The code is based on information published in WDJ January 1999 issue.
*/
void WINAPI RtlInitializeResource(LPRTL_RWLOCK rwl)
{
if( rwl )
{
rwl->iNumberActive = 0;
rwl->uExclusiveWaiters = 0;
rwl->uSharedWaiters = 0;
rwl->hOwningThreadId = 0;
rwl->dwTimeoutBoost = 0; /* no info on this one, default value is 0 */
RtlInitializeCriticalSection( &rwl->rtlCS );
NtCreateSemaphore( &rwl->hExclusiveReleaseSemaphore, 0, NULL, 0, 65535 );
NtCreateSemaphore( &rwl->hSharedReleaseSemaphore, 0, NULL, 0, 65535 );
}
}
/***********************************************************************
* RtlDeleteResource (NTDLL.@)
*/
void WINAPI RtlDeleteResource(LPRTL_RWLOCK rwl)
{
if( rwl )
{
RtlEnterCriticalSection( &rwl->rtlCS );
if( rwl->iNumberActive || rwl->uExclusiveWaiters || rwl->uSharedWaiters )
MESSAGE("Deleting active MRSW lock (%p), expect failure\n", rwl );
rwl->hOwningThreadId = 0;
rwl->uExclusiveWaiters = rwl->uSharedWaiters = 0;
rwl->iNumberActive = 0;
NtClose( rwl->hExclusiveReleaseSemaphore );
NtClose( rwl->hSharedReleaseSemaphore );
RtlLeaveCriticalSection( &rwl->rtlCS );
RtlDeleteCriticalSection( &rwl->rtlCS );
}
}
/***********************************************************************
* RtlAcquireResourceExclusive (NTDLL.@)
*/
BYTE WINAPI RtlAcquireResourceExclusive(LPRTL_RWLOCK rwl, BYTE fWait)
{
BYTE retVal = 0;
if( !rwl ) return 0;
start:
RtlEnterCriticalSection( &rwl->rtlCS );
if( rwl->iNumberActive == 0 ) /* lock is free */
{
rwl->iNumberActive = -1;
retVal = 1;
}
else if( rwl->iNumberActive < 0 ) /* exclusive lock in progress */
{
if( rwl->hOwningThreadId == (HANDLE)GetCurrentThreadId() )
{
retVal = 1;
rwl->iNumberActive--;
goto done;
}
wait:
if( fWait )
{
rwl->uExclusiveWaiters++;
RtlLeaveCriticalSection( &rwl->rtlCS );
if( WaitForSingleObject( rwl->hExclusiveReleaseSemaphore, INFINITE ) == WAIT_FAILED )
goto done;
goto start; /* restart the acquisition to avoid deadlocks */
}
}
else /* one or more shared locks are in progress */
if( fWait )
goto wait;
if( retVal == 1 )
rwl->hOwningThreadId = (HANDLE)GetCurrentThreadId();
done:
RtlLeaveCriticalSection( &rwl->rtlCS );
return retVal;
}
/***********************************************************************
* RtlAcquireResourceShared (NTDLL.@)
*/
BYTE WINAPI RtlAcquireResourceShared(LPRTL_RWLOCK rwl, BYTE fWait)
{
DWORD dwWait = WAIT_FAILED;
BYTE retVal = 0;
if( !rwl ) return 0;
start:
RtlEnterCriticalSection( &rwl->rtlCS );
if( rwl->iNumberActive < 0 )
{
if( rwl->hOwningThreadId == (HANDLE)GetCurrentThreadId() )
{
rwl->iNumberActive--;
retVal = 1;
goto done;
}
if( fWait )
{
rwl->uSharedWaiters++;
RtlLeaveCriticalSection( &rwl->rtlCS );
if( (dwWait = WaitForSingleObject( rwl->hSharedReleaseSemaphore, INFINITE )) == WAIT_FAILED )
goto done;
goto start;
}
}
else
{
if( dwWait != WAIT_OBJECT_0 ) /* otherwise RtlReleaseResource() has already done it */
rwl->iNumberActive++;
retVal = 1;
}
done:
RtlLeaveCriticalSection( &rwl->rtlCS );
return retVal;
}
/***********************************************************************
* RtlReleaseResource (NTDLL.@)
*/
void WINAPI RtlReleaseResource(LPRTL_RWLOCK rwl)
{
RtlEnterCriticalSection( &rwl->rtlCS );
if( rwl->iNumberActive > 0 ) /* have one or more readers */
{
if( --rwl->iNumberActive == 0 )
{
if( rwl->uExclusiveWaiters )
{
wake_exclusive:
rwl->uExclusiveWaiters--;
NtReleaseSemaphore( rwl->hExclusiveReleaseSemaphore, 1, NULL );
}
}
}
else
if( rwl->iNumberActive < 0 ) /* have a writer, possibly recursive */
{
if( ++rwl->iNumberActive == 0 )
{
rwl->hOwningThreadId = 0;
if( rwl->uExclusiveWaiters )
goto wake_exclusive;
else
if( rwl->uSharedWaiters )
{
UINT n = rwl->uSharedWaiters;
rwl->iNumberActive = rwl->uSharedWaiters; /* prevent new writers from joining until
* all queued readers have done their thing */
rwl->uSharedWaiters = 0;
NtReleaseSemaphore( rwl->hSharedReleaseSemaphore, n, NULL );
}
}
}
RtlLeaveCriticalSection( &rwl->rtlCS );
}
/***********************************************************************
* RtlDumpResource (NTDLL.@)
*/
void WINAPI RtlDumpResource(LPRTL_RWLOCK rwl)
{
if( rwl )
{
MESSAGE("RtlDumpResource(%p):\n\tactive count = %i\n\twaiting readers = %i\n\twaiting writers = %i\n",
rwl, rwl->iNumberActive, rwl->uSharedWaiters, rwl->uExclusiveWaiters );
if( rwl->iNumberActive )
MESSAGE("\towner thread = %08x\n", rwl->hOwningThreadId );
}
}
/*
* misc functions
*/
/******************************************************************************
* DbgPrint [NTDLL.@]
*/
void WINAPIV DbgPrint(LPCSTR fmt, ...)
{
char buf[512];
va_list args;
va_start(args, fmt);
vsprintf(buf,fmt, args);
va_end(args);
MESSAGE("DbgPrint says: %s",buf);
/* hmm, raise exception? */
}
/******************************************************************************
* RtlAcquirePebLock [NTDLL.@]
*/
VOID WINAPI RtlAcquirePebLock(void)
{
RtlEnterCriticalSection( &peb_lock );
}
/******************************************************************************
* RtlReleasePebLock [NTDLL.@]
*/
VOID WINAPI RtlReleasePebLock(void)
{
RtlLeaveCriticalSection( &peb_lock );
}
/******************************************************************************
* RtlIntegerToChar [NTDLL.@]
*/
DWORD WINAPI RtlIntegerToChar(DWORD x1,DWORD x2,DWORD x3,DWORD x4) {
FIXME("(0x%08lx,0x%08lx,0x%08lx,0x%08lx),stub!\n",x1,x2,x3,x4);
return 0;
}
/******************************************************************************
* RtlSetEnvironmentVariable [NTDLL.@]
*/
DWORD WINAPI RtlSetEnvironmentVariable(DWORD x1,PUNICODE_STRING key,PUNICODE_STRING val) {
FIXME("(0x%08lx,%s,%s),stub!\n",x1,debugstr_w(key->Buffer),debugstr_w(val->Buffer));
return 0;
}
/******************************************************************************
* RtlNewSecurityObject [NTDLL.@]
*/
DWORD WINAPI RtlNewSecurityObject(DWORD x1,DWORD x2,DWORD x3,DWORD x4,DWORD x5,DWORD x6) {
FIXME("(0x%08lx,0x%08lx,0x%08lx,0x%08lx,0x%08lx,0x%08lx),stub!\n",x1,x2,x3,x4,x5,x6);
return 0;
}
/******************************************************************************
* RtlDeleteSecurityObject [NTDLL.@]
*/
DWORD WINAPI RtlDeleteSecurityObject(DWORD x1) {
FIXME("(0x%08lx),stub!\n",x1);
return 0;
}
/**************************************************************************
* RtlNormalizeProcessParams [NTDLL.@]
*/
LPVOID WINAPI RtlNormalizeProcessParams(LPVOID x)
{
FIXME("(%p), stub\n",x);
return x;
}
/**************************************************************************
* RtlGetNtProductType [NTDLL.@]
*/
BOOLEAN WINAPI RtlGetNtProductType(LPDWORD type)
{
FIXME("(%p): stub\n", type);
*type=3; /* dunno. 1 for client, 3 for server? */
return 1;
}
/**************************************************************************
* _chkstk [NTDLL.@]
*
* Glorified "enter xxxx".
*/
void WINAPI NTDLL_chkstk( CONTEXT86 *context )
{
context->Esp -= context->Eax;
}
/**************************************************************************
* _alloca_probe [NTDLL.@]
*
* Glorified "enter xxxx".
*/
void WINAPI NTDLL_alloca_probe( CONTEXT86 *context )
{
context->Esp -= context->Eax;
}
/**************************************************************************
* RtlDosPathNameToNtPathName_U [NTDLL.@]
*
* FIXME: convert to UNC or whatever is expected here
*/
BOOLEAN WINAPI RtlDosPathNameToNtPathName_U(
LPWSTR from,PUNICODE_STRING us,DWORD x2,DWORD x3)
{
FIXME("(%s,%p,%08lx,%08lx)\n",debugstr_w(from),us,x2,x3);
if (us) RtlCreateUnicodeString( us, from );
return TRUE;
}
/******************************************************************************
* RtlCreateEnvironment [NTDLL.@]
*/
DWORD WINAPI RtlCreateEnvironment(DWORD x1,DWORD x2) {
FIXME("(0x%08lx,0x%08lx),stub!\n",x1,x2);
return 0;
}
/******************************************************************************
* RtlDestroyEnvironment [NTDLL.@]
*/
DWORD WINAPI RtlDestroyEnvironment(DWORD x) {
FIXME("(0x%08lx),stub!\n",x);
return 0;
}
/******************************************************************************
* RtlQueryEnvironmentVariable_U [NTDLL.@]
*/
DWORD WINAPI RtlQueryEnvironmentVariable_U(DWORD x1,PUNICODE_STRING key,PUNICODE_STRING val) {
FIXME("(0x%08lx,%s,%p),stub!\n",x1,debugstr_w(key->Buffer),val);
return 0;
}
/******************************************************************************
* RtlInitializeGenericTable [NTDLL.@]
*/
DWORD WINAPI RtlInitializeGenericTable(void)
{
FIXME("\n");
return 0;
}
/******************************************************************************
* RtlCopyMemory [NTDLL]
*
*/
#undef RtlCopyMemory
VOID WINAPI RtlCopyMemory( VOID *Destination, CONST VOID *Source, SIZE_T Length )
{
memcpy(Destination, Source, Length);
}
/******************************************************************************
* RtlMoveMemory [NTDLL.@]
*/
#undef RtlMoveMemory
VOID WINAPI RtlMoveMemory( VOID *Destination, CONST VOID *Source, SIZE_T Length )
{
memmove(Destination, Source, Length);
}
/******************************************************************************
* RtlFillMemory [NTDLL.@]
*/
#undef RtlFillMemory
VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
{
memset(Destination, Fill, Length);
}
/******************************************************************************
* RtlZeroMemory [NTDLL.@]
*/
#undef RtlZeroMemory
VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
{
memset(Destination, 0, Length);
}
/******************************************************************************
* RtlCompareMemory [NTDLL.@]
*/
SIZE_T WINAPI RtlCompareMemory( const VOID *Source1, const VOID *Source2, SIZE_T Length)
{
int i;
for(i=0; (i<Length) && (((LPBYTE)Source1)[i]==((LPBYTE)Source2)[i]); i++);
return i;
}
/******************************************************************************
* RtlAssert [NTDLL.@]
*
* Not implemented in non-debug versions.
*/
void WINAPI RtlAssert(LPVOID x1,LPVOID x2,DWORD x3, DWORD x4)
{
FIXME("(%p,%p,0x%08lx,0x%08lx),stub\n",x1,x2,x3,x4);
}
/******************************************************************************
* RtlGetNtVersionNumbers [NTDLL.@]
*
* Introduced in Windows XP (NT5.1)
*/
void WINAPI RtlGetNtVersionNumbers(LPDWORD major, LPDWORD minor, LPDWORD build)
{
OSVERSIONINFOEXW versionInfo;
versionInfo.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEXW);
GetVersionExW((OSVERSIONINFOW*)&versionInfo);
if (major)
{
*major = versionInfo.dwMajorVersion;
}
if (minor)
{
*minor = versionInfo.dwMinorVersion;
}
if (build)
{
/* FIXME: Does anybody know the real formula? */
*build = (0xF0000000 | versionInfo.dwBuildNumber);
}
}
/*************************************************************************
* RtlFillMemoryUlong [NTDLL.@]
*
* Fill memory with a 32 bit (dword) value.
*
* PARAMS
* lpDest [I] Bitmap pointer
* ulCount [I] Number of dwords to write
* ulValue [I] Value to fill with
*
* RETURNS
* Nothing.
*/
VOID WINAPI RtlFillMemoryUlong(ULONG* lpDest, ULONG ulCount, ULONG ulValue)
{
TRACE("(%p,%ld,%ld)\n", lpDest, ulCount, ulValue);
while(ulCount--)
*lpDest++ = ulValue;
}
/*************************************************************************
* RtlGetLongestNtPathLength [NTDLL.@]
*
* Get the longest allowed path length
*
* PARAMS
* None.
*
* RETURNS
* The longest allowed path length (277 characters under Win2k).
*/
DWORD WINAPI RtlGetLongestNtPathLength(void)
{
TRACE("()\n");
return 277;
}
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