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goma / wine / cfcc0dda15eb04c87319e2a0cd61212cdf8dcce7 / . / dlls / ntdll / rtl.c
blob: 09a9c921bb581b25f04a6a53c03136c135c89263 [file] [log] [blame]
/*
* NT basis DLL
*
* This file contains the Rtl* API functions. These should be implementable.
*
* Copyright 1996-1998 Marcus Meissner
* Copyright 1999 Alex Korobka
* Copyright 2003 Thomas Mertes
* Crc32 code Copyright 1986 Gary S. Brown (Public domain)
*
* 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include <stdlib.h>
#include <stdarg.h>
#include <stdio.h>
#include <string.h>
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include "ntstatus.h"
#define NONAMELESSUNION
#define NONAMELESSSTRUCT
#define WIN32_NO_STATUS
#define USE_WS_PREFIX
#include "windef.h"
#include "winternl.h"
#include "wine/debug.h"
#include "wine/exception.h"
#include "wine/unicode.h"
#include "ntdll_misc.h"
#include "inaddr.h"
#include "ddk/ntddk.h"
WINE_DEFAULT_DEBUG_CHANNEL(ntdll);
#ifdef __i386__
#define DEFINE_FASTCALL4_ENTRYPOINT( name ) \
__ASM_STDCALL_FUNC( name, 16, \
"popl %eax\n\t" \
"pushl %edx\n\t" \
"pushl %ecx\n\t" \
"pushl %eax\n\t" \
"jmp " __ASM_NAME("__regs_") #name __ASM_STDCALL(16))
#endif
/* CRC polynomial 0xedb88320 */
static const DWORD CRC_table[256] =
{
0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, 0x706af48f,
0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, 0xe0d5e91e, 0x97d2d988,
0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, 0x90bf1d91, 0x1db71064, 0x6ab020f2,
0xf3b97148, 0x84be41de, 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7,
0x136c9856, 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, 0xa2677172,
0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, 0x35b5a8fa, 0x42b2986c,
0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, 0x45df5c75, 0xdcd60dcf, 0xabd13d59,
0x26d930ac, 0x51de003a, 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423,
0xcfba9599, 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, 0x01db7106,
0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, 0x9fbfe4a5, 0xe8b8d433,
0x7807c9a2, 0x0f00f934, 0x9609a88e, 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d,
0x91646c97, 0xe6635c01, 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e,
0x6c0695ed, 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, 0xfbd44c65,
0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, 0x4adfa541, 0x3dd895d7,
0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, 0x346ed9fc, 0xad678846, 0xda60b8d0,
0x44042d73, 0x33031de5, 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa,
0xbe0b1010, 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, 0x2eb40d81,
0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, 0x03b6e20c, 0x74b1d29a,
0xead54739, 0x9dd277af, 0x04db2615, 0x73dc1683, 0xe3630b12, 0x94643b84,
0x0d6d6a3e, 0x7a6a5aa8, 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1,
0xf00f9344, 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, 0x67dd4acc,
0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, 0xd6d6a3e8, 0xa1d1937e,
0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, 0xa6bc5767, 0x3fb506dd, 0x48b2364b,
0xd80d2bda, 0xaf0a1b4c, 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55,
0x316e8eef, 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, 0xb2bd0b28,
0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, 0x2cd99e8b, 0x5bdeae1d,
0x9b64c2b0, 0xec63f226, 0x756aa39c, 0x026d930a, 0x9c0906a9, 0xeb0e363f,
0x72076785, 0x05005713, 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38,
0x92d28e9b, 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, 0x18b74777,
0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, 0x8f659eff, 0xf862ae69,
0x616bffd3, 0x166ccf45, 0xa00ae278, 0xd70dd2ee, 0x4e048354, 0x3903b3c2,
0xa7672661, 0xd06016f7, 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc,
0x40df0b66, 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, 0xcdd70693,
0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, 0x5d681b02, 0x2a6f2b94,
0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, 0x2d02ef8d
};
/*
* 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 );
rwl->rtlCS.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": RTL_RWLOCK.rtlCS");
NtCreateSemaphore( &rwl->hExclusiveReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
NtCreateSemaphore( &rwl->hSharedReleaseSemaphore, SEMAPHORE_ALL_ACCESS, NULL, 0, 65535 );
}
}
/***********************************************************************
* RtlDeleteResource (NTDLL.@)
*/
void WINAPI RtlDeleteResource(LPRTL_RWLOCK rwl)
{
if( rwl )
{
RtlEnterCriticalSection( &rwl->rtlCS );
if( rwl->iNumberActive || rwl->uExclusiveWaiters || rwl->uSharedWaiters )
ERR("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 );
rwl->rtlCS.DebugInfo->Spare[0] = 0;
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 == ULongToHandle(GetCurrentThreadId()) )
{
retVal = 1;
rwl->iNumberActive--;
goto done;
}
wait:
if( fWait )
{
NTSTATUS status;
rwl->uExclusiveWaiters++;
RtlLeaveCriticalSection( &rwl->rtlCS );
status = NtWaitForSingleObject( rwl->hExclusiveReleaseSemaphore, FALSE, NULL );
if( HIWORD(status) )
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 = ULongToHandle(GetCurrentThreadId());
done:
RtlLeaveCriticalSection( &rwl->rtlCS );
return retVal;
}
/***********************************************************************
* RtlAcquireResourceShared (NTDLL.@)
*/
BYTE WINAPI RtlAcquireResourceShared(LPRTL_RWLOCK rwl, BYTE fWait)
{
NTSTATUS status = STATUS_UNSUCCESSFUL;
BYTE retVal = 0;
if( !rwl ) return 0;
start:
RtlEnterCriticalSection( &rwl->rtlCS );
if( rwl->iNumberActive < 0 )
{
if( rwl->hOwningThreadId == ULongToHandle(GetCurrentThreadId()) )
{
rwl->iNumberActive--;
retVal = 1;
goto done;
}
if( fWait )
{
rwl->uSharedWaiters++;
RtlLeaveCriticalSection( &rwl->rtlCS );
status = NtWaitForSingleObject( rwl->hSharedReleaseSemaphore, FALSE, NULL );
if( HIWORD(status) )
goto done;
goto start;
}
}
else
{
if( status != STATUS_WAIT_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 = %p\n", rwl->hOwningThreadId );
}
}
/*
* misc functions
*/
/******************************************************************************
* DbgPrint [NTDLL.@]
*/
NTSTATUS WINAPIV DbgPrint(LPCSTR fmt, ...)
{
char buf[512];
__ms_va_list args;
__ms_va_start(args, fmt);
NTDLL__vsnprintf(buf, sizeof(buf), fmt, args);
__ms_va_end(args);
MESSAGE("DbgPrint says: %s",buf);
/* hmm, raise exception? */
return STATUS_SUCCESS;
}
/******************************************************************************
* DbgPrintEx [NTDLL.@]
*/
NTSTATUS WINAPIV DbgPrintEx(ULONG iComponentId, ULONG Level, LPCSTR fmt, ...)
{
NTSTATUS ret;
__ms_va_list args;
__ms_va_start(args, fmt);
ret = vDbgPrintEx(iComponentId, Level, fmt, args);
__ms_va_end(args);
return ret;
}
/******************************************************************************
* vDbgPrintEx [NTDLL.@]
*/
NTSTATUS WINAPI vDbgPrintEx( ULONG id, ULONG level, LPCSTR fmt, __ms_va_list args )
{
return vDbgPrintExWithPrefix( "", id, level, fmt, args );
}
/******************************************************************************
* vDbgPrintExWithPrefix [NTDLL.@]
*/
NTSTATUS WINAPI vDbgPrintExWithPrefix( LPCSTR prefix, ULONG id, ULONG level, LPCSTR fmt, __ms_va_list args )
{
char buf[1024];
NTDLL__vsnprintf(buf, sizeof(buf), fmt, args);
switch (level & DPFLTR_MASK)
{
case DPFLTR_ERROR_LEVEL: ERR("%s%x: %s", prefix, id, buf); break;
case DPFLTR_WARNING_LEVEL: WARN("%s%x: %s", prefix, id, buf); break;
case DPFLTR_TRACE_LEVEL:
case DPFLTR_INFO_LEVEL:
default: TRACE("%s%x: %s", prefix, id, buf); break;
}
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlAcquirePebLock [NTDLL.@]
*/
VOID WINAPI RtlAcquirePebLock(void)
{
RtlEnterCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
}
/******************************************************************************
* RtlReleasePebLock [NTDLL.@]
*/
VOID WINAPI RtlReleasePebLock(void)
{
RtlLeaveCriticalSection( NtCurrentTeb()->Peb->FastPebLock );
}
/******************************************************************************
* RtlNewSecurityObject [NTDLL.@]
*/
NTSTATUS WINAPI
RtlNewSecurityObject( PSECURITY_DESCRIPTOR ParentDescriptor,
PSECURITY_DESCRIPTOR CreatorDescriptor,
PSECURITY_DESCRIPTOR *NewDescriptor,
BOOLEAN IsDirectoryObject,
HANDLE Token,
PGENERIC_MAPPING GenericMapping )
{
FIXME("(%p %p %p %d %p %p) stub!\n", ParentDescriptor, CreatorDescriptor,
NewDescriptor, IsDirectoryObject, Token, GenericMapping);
return STATUS_NOT_IMPLEMENTED;
}
/******************************************************************************
* RtlDeleteSecurityObject [NTDLL.@]
*/
NTSTATUS WINAPI
RtlDeleteSecurityObject( PSECURITY_DESCRIPTOR *ObjectDescriptor )
{
FIXME("(%p) stub!\n", ObjectDescriptor);
return STATUS_NOT_IMPLEMENTED;
}
/******************************************************************************
* RtlInitializeGenericTable [NTDLL.@]
*/
PVOID WINAPI RtlInitializeGenericTable(PVOID pTable, PVOID arg2, PVOID arg3, PVOID arg4, PVOID arg5)
{
FIXME("(%p,%p,%p,%p,%p) stub!\n", pTable, arg2, arg3, arg4, arg5);
return NULL;
}
/******************************************************************************
* RtlEnumerateGenericTableWithoutSplaying [NTDLL.@]
*/
PVOID RtlEnumerateGenericTableWithoutSplaying(PVOID pTable, PVOID *RestartKey)
{
static int warn_once;
if (!warn_once++)
FIXME("(%p,%p) stub!\n", pTable, RestartKey);
return NULL;
}
/******************************************************************************
* RtlNumberGenericTableElements [NTDLL.@]
*/
ULONG RtlNumberGenericTableElements(PVOID pTable)
{
FIXME("(%p) stub!\n", pTable);
return 0;
}
/******************************************************************************
* RtlMoveMemory [NTDLL.@]
*
* Move a block of memory that may overlap.
*
* PARAMS
* Destination [O] End destination for block
* Source [O] Where to start copying from
* Length [I] Number of bytes to copy
*
* RETURNS
* Nothing.
*/
#undef RtlMoveMemory
VOID WINAPI RtlMoveMemory( void *Destination, const void *Source, SIZE_T Length )
{
memmove(Destination, Source, Length);
}
/******************************************************************************
* RtlFillMemory [NTDLL.@]
*
* Set a block of memory with a value.
*
* PARAMS
* Destination [O] Block to fill
* Length [I] Number of bytes to fill
* Fill [I] Value to set
*
* RETURNS
* Nothing.
*/
#undef RtlFillMemory
VOID WINAPI RtlFillMemory( VOID *Destination, SIZE_T Length, BYTE Fill )
{
memset(Destination, Fill, Length);
}
/******************************************************************************
* RtlZeroMemory [NTDLL.@]
*
* Set a block of memory with 0's.
*
* PARAMS
* Destination [O] Block to fill
* Length [I] Number of bytes to fill
*
* RETURNS
* Nothing.
*/
#undef RtlZeroMemory
VOID WINAPI RtlZeroMemory( VOID *Destination, SIZE_T Length )
{
memset(Destination, 0, Length);
}
/******************************************************************************
* RtlCompareMemory [NTDLL.@]
*
* Compare one block of memory with another
*
* PARAMS
* Source1 [I] Source block
* Source2 [I] Block to compare to Source1
* Length [I] Number of bytes to compare
*
* RETURNS
* The length of the first byte at which Source1 and Source2 differ, or Length
* if they are the same.
*/
SIZE_T WINAPI RtlCompareMemory( const VOID *Source1, const VOID *Source2, SIZE_T Length)
{
SIZE_T i;
for(i=0; (i<Length) && (((const BYTE*)Source1)[i]==((const BYTE*)Source2)[i]); i++);
return i;
}
/******************************************************************************
* RtlCompareMemoryUlong [NTDLL.@]
*
* Compare a block of memory with a value, a ULONG at a time
*
* PARAMS
* Source1 [I] Source block. This must be ULONG aligned
* Length [I] Number of bytes to compare. This should be a multiple of 4
* dwVal [I] Value to compare to
*
* RETURNS
* The byte position of the first byte at which Source1 is not dwVal.
*/
SIZE_T WINAPI RtlCompareMemoryUlong(const ULONG *Source1, SIZE_T Length, ULONG dwVal)
{
SIZE_T i;
for(i = 0; i < Length/sizeof(ULONG) && Source1[i] == dwVal; i++);
return i * sizeof(ULONG);
}
/******************************************************************************
* RtlCopyMemory [NTDLL.@]
*/
#undef RtlCopyMemory
void WINAPI RtlCopyMemory(void *dest, const void *src, SIZE_T len)
{
memcpy(dest, src, len);
}
/******************************************************************************
* RtlAssert [NTDLL.@]
*
* Fail a debug assertion.
*
* RETURNS
* Nothing. This call does not return control to its caller.
*
* NOTES
* Not implemented in non-debug versions.
*/
void WINAPI RtlAssert(void *assertion, void *filename, ULONG linenumber, char *message)
{
FIXME("(%s, %s, %u, %s): stub\n", debugstr_a((char*)assertion), debugstr_a((char*)filename),
linenumber, debugstr_a(message));
}
/*************************************************************************
* 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,%d,%d)\n", lpDest, ulCount, ulValue);
ulCount /= sizeof(ULONG);
while(ulCount--)
*lpDest++ = ulValue;
}
/*********************************************************************
* RtlComputeCrc32 [NTDLL.@]
*
* Calculate the CRC32 checksum of a block of bytes
*
* PARAMS
* dwInitial [I] Initial CRC value
* pData [I] Data block
* iLen [I] Length of the byte block
*
* RETURNS
* The cumulative CRC32 of dwInitial and iLen bytes of the pData block.
*/
DWORD WINAPI RtlComputeCrc32(DWORD dwInitial, const BYTE *pData, INT iLen)
{
DWORD crc = ~dwInitial;
TRACE("(%d,%p,%d)\n", dwInitial, pData, iLen);
while (iLen > 0)
{
crc = CRC_table[(crc ^ *pData) & 0xff] ^ (crc >> 8);
pData++;
iLen--;
}
return ~crc;
}
/*************************************************************************
* RtlUlonglongByteSwap [NTDLL.@]
*
* Swap the bytes of an unsigned long long value.
*
* PARAMS
* i [I] Value to swap bytes of
*
* RETURNS
* The value with its bytes swapped.
*/
ULONGLONG __cdecl RtlUlonglongByteSwap(ULONGLONG i)
{
return ((ULONGLONG)RtlUlongByteSwap(i) << 32) | RtlUlongByteSwap(i>>32);
}
/*************************************************************************
* RtlUlongByteSwap [NTDLL.@]
*
* Swap the bytes of an unsigned int value.
*
* NOTES
* ix86 version takes argument in %ecx. Other systems use the inline version.
*/
#ifdef __i386__
__ASM_GLOBAL_FUNC(NTDLL_RtlUlongByteSwap,
"movl %ecx,%eax\n\t"
"bswap %eax\n\t"
"ret")
#endif
/*************************************************************************
* RtlUshortByteSwap [NTDLL.@]
*
* Swap the bytes of an unsigned short value.
*
* NOTES
* i386 version takes argument in %cx. Other systems use the inline version.
*/
#ifdef __i386__
__ASM_GLOBAL_FUNC(NTDLL_RtlUshortByteSwap,
"movb %ch,%al\n\t"
"movb %cl,%ah\n\t"
"ret")
#endif
/*************************************************************************
* RtlUniform [NTDLL.@]
*
* Generates an uniform random number
*
* PARAMS
* seed [O] The seed of the Random function
*
* RETURNS
* It returns a random number uniformly distributed over [0..MAXLONG-1].
*
* NOTES
* Generates an uniform random number using D.H. Lehmer's 1948 algorithm.
* In our case the algorithm is:
*
*| result = (*seed * 0x7fffffed + 0x7fffffc3) % MAXLONG;
*|
*| *seed = result;
*
* DIFFERENCES
* The native documentation states that the random number is
* uniformly distributed over [0..MAXLONG]. In reality the native
* function and our function return a random number uniformly
* distributed over [0..MAXLONG-1].
*/
ULONG WINAPI RtlUniform (PULONG seed)
{
ULONG result;
/*
* Instead of the algorithm stated above, we use the algorithm
* below, which is totally equivalent (see the tests), but does
* not use a division and therefore is faster.
*/
result = *seed * 0xffffffed + 0x7fffffc3;
if (result == 0xffffffff || result == 0x7ffffffe) {
result = (result + 2) & MAXLONG;
} else if (result == 0x7fffffff) {
result = 0;
} else if ((result & 0x80000000) == 0) {
result = result + (~result & 1);
} else {
result = (result + (result & 1)) & MAXLONG;
} /* if */
*seed = result;
return result;
}
/*************************************************************************
* RtlRandom [NTDLL.@]
*
* Generates a random number
*
* PARAMS
* seed [O] The seed of the Random function
*
* RETURNS
* It returns a random number distributed over [0..MAXLONG-1].
*/
ULONG WINAPI RtlRandom (PULONG seed)
{
static ULONG saved_value[128] =
{ /* 0 */ 0x4c8bc0aa, 0x4c022957, 0x2232827a, 0x2f1e7626, 0x7f8bdafb, 0x5c37d02a, 0x0ab48f72, 0x2f0c4ffa,
/* 8 */ 0x290e1954, 0x6b635f23, 0x5d3885c0, 0x74b49ff8, 0x5155fa54, 0x6214ad3f, 0x111e9c29, 0x242a3a09,
/* 16 */ 0x75932ae1, 0x40ac432e, 0x54f7ba7a, 0x585ccbd5, 0x6df5c727, 0x0374dad1, 0x7112b3f1, 0x735fc311,
/* 24 */ 0x404331a9, 0x74d97781, 0x64495118, 0x323e04be, 0x5974b425, 0x4862e393, 0x62389c1d, 0x28a68b82,
/* 32 */ 0x0f95da37, 0x7a50bbc6, 0x09b0091c, 0x22cdb7b4, 0x4faaed26, 0x66417ccd, 0x189e4bfa, 0x1ce4e8dd,
/* 40 */ 0x5274c742, 0x3bdcf4dc, 0x2d94e907, 0x32eac016, 0x26d33ca3, 0x60415a8a, 0x31f57880, 0x68c8aa52,
/* 48 */ 0x23eb16da, 0x6204f4a1, 0x373927c1, 0x0d24eb7c, 0x06dd7379, 0x2b3be507, 0x0f9c55b1, 0x2c7925eb,
/* 56 */ 0x36d67c9a, 0x42f831d9, 0x5e3961cb, 0x65d637a8, 0x24bb3820, 0x4d08e33d, 0x2188754f, 0x147e409e,
/* 64 */ 0x6a9620a0, 0x62e26657, 0x7bd8ce81, 0x11da0abb, 0x5f9e7b50, 0x23e444b6, 0x25920c78, 0x5fc894f0,
/* 72 */ 0x5e338cbb, 0x404237fd, 0x1d60f80f, 0x320a1743, 0x76013d2b, 0x070294ee, 0x695e243b, 0x56b177fd,
/* 80 */ 0x752492e1, 0x6decd52f, 0x125f5219, 0x139d2e78, 0x1898d11e, 0x2f7ee785, 0x4db405d8, 0x1a028a35,
/* 88 */ 0x63f6f323, 0x1f6d0078, 0x307cfd67, 0x3f32a78a, 0x6980796c, 0x462b3d83, 0x34b639f2, 0x53fce379,
/* 96 */ 0x74ba50f4, 0x1abc2c4b, 0x5eeaeb8d, 0x335a7a0d, 0x3973dd20, 0x0462d66b, 0x159813ff, 0x1e4643fd,
/* 104 */ 0x06bc5c62, 0x3115e3fc, 0x09101613, 0x47af2515, 0x4f11ec54, 0x78b99911, 0x3db8dd44, 0x1ec10b9b,
/* 112 */ 0x5b5506ca, 0x773ce092, 0x567be81a, 0x5475b975, 0x7a2cde1a, 0x494536f5, 0x34737bb4, 0x76d9750b,
/* 120 */ 0x2a1f6232, 0x2e49644d, 0x7dddcbe7, 0x500cebdb, 0x619dab9e, 0x48c626fe, 0x1cda3193, 0x52dabe9d };
ULONG rand;
int pos;
ULONG result;
rand = (*seed * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
*seed = (rand * 0x7fffffed + 0x7fffffc3) % 0x7fffffff;
pos = *seed & 0x7f;
result = saved_value[pos];
saved_value[pos] = rand;
return(result);
}
/*************************************************************************
* RtlAreAllAccessesGranted [NTDLL.@]
*
* Check if all desired accesses are granted
*
* RETURNS
* TRUE: All desired accesses are granted
* FALSE: Otherwise
*/
BOOLEAN WINAPI RtlAreAllAccessesGranted(
ACCESS_MASK GrantedAccess,
ACCESS_MASK DesiredAccess)
{
return (GrantedAccess & DesiredAccess) == DesiredAccess;
}
/*************************************************************************
* RtlAreAnyAccessesGranted [NTDLL.@]
*
* Check if at least one of the desired accesses is granted
*
* PARAMS
* GrantedAccess [I] Access mask of granted accesses
* DesiredAccess [I] Access mask of desired accesses
*
* RETURNS
* TRUE: At least one of the desired accesses is granted
* FALSE: Otherwise
*/
BOOLEAN WINAPI RtlAreAnyAccessesGranted(
ACCESS_MASK GrantedAccess,
ACCESS_MASK DesiredAccess)
{
return (GrantedAccess & DesiredAccess) != 0;
}
/*************************************************************************
* RtlMapGenericMask [NTDLL.@]
*
* Determine the nongeneric access rights specified by an access mask
*
* RETURNS
* Nothing.
*/
void WINAPI RtlMapGenericMask(
PACCESS_MASK AccessMask,
const GENERIC_MAPPING *GenericMapping)
{
if (*AccessMask & GENERIC_READ) {
*AccessMask |= GenericMapping->GenericRead;
} /* if */
if (*AccessMask & GENERIC_WRITE) {
*AccessMask |= GenericMapping->GenericWrite;
} /* if */
if (*AccessMask & GENERIC_EXECUTE) {
*AccessMask |= GenericMapping->GenericExecute;
} /* if */
if (*AccessMask & GENERIC_ALL) {
*AccessMask |= GenericMapping->GenericAll;
} /* if */
*AccessMask &= 0x0FFFFFFF;
}
/*************************************************************************
* RtlCopyLuid [NTDLL.@]
*
* Copy a local unique ID.
*
* PARAMS
* LuidDest [O] Destination for the copied Luid
* LuidSrc [I] Source Luid to copy to LuidDest
*
* RETURNS
* Nothing.
*/
void WINAPI RtlCopyLuid (PLUID LuidDest, const LUID *LuidSrc)
{
*LuidDest = *LuidSrc;
}
/*************************************************************************
* RtlEqualLuid [NTDLL.@]
*
* Compare two local unique IDs.
*
* PARAMS
* Luid1 [I] First Luid to compare to Luid2
* Luid2 [I] Second Luid to compare to Luid1
*
* RETURNS
* TRUE: The two LUIDs are equal.
* FALSE: Otherwise
*/
BOOLEAN WINAPI RtlEqualLuid (const LUID *Luid1, const LUID *Luid2)
{
return (Luid1->LowPart == Luid2->LowPart && Luid1->HighPart == Luid2->HighPart);
}
/*************************************************************************
* RtlCopyLuidAndAttributesArray [NTDLL.@]
*
* Copy an array of local unique IDs and attributes.
*
* PARAMS
* Count [I] Number of Luid/attributes in Src
* Src [I] Source Luid/attributes to copy
* Dest [O] Destination for copied Luid/attributes
*
* RETURNS
* Nothing.
*
* NOTES
* Dest must be large enough to hold Src.
*/
void WINAPI RtlCopyLuidAndAttributesArray(
ULONG Count,
const LUID_AND_ATTRIBUTES *Src,
PLUID_AND_ATTRIBUTES Dest)
{
ULONG i;
for (i = 0; i < Count; i++) Dest[i] = Src[i];
}
/***********************************************************************
* RtlIpv4StringToAddressExW [NTDLL.@]
*/
NTSTATUS WINAPI RtlIpv4StringToAddressExW(const WCHAR *str, BOOLEAN strict, IN_ADDR *address, USHORT *port)
{
FIXME("(%s, %u, %p, %p): stub\n", debugstr_w(str), strict, address, port);
return STATUS_NOT_IMPLEMENTED;
}
/***********************************************************************
* RtlIpv4StringToAddressW [NTDLL.@]
*/
NTSTATUS WINAPI RtlIpv4StringToAddressW(const WCHAR *str, BOOLEAN strict, const WCHAR **terminator, IN_ADDR *address)
{
FIXME("(%s, %u, %p, %p): stub\n", debugstr_w(str), strict, terminator, address);
return STATUS_NOT_IMPLEMENTED;
}
/***********************************************************************
* RtlIpv4AddressToStringExW [NTDLL.@]
*
* Convert the given ipv4 address and optional the port to a string
*
* PARAMS
* pin [I] PTR to the ip address to convert (network byte order)
* port [I] optional port to convert (network byte order)
* buffer [O] destination buffer for the result
* psize [IO] PTR to available/used size of the destination buffer
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_INVALID_PARAMETER
*
*/
NTSTATUS WINAPI RtlIpv4AddressToStringExW(const IN_ADDR *pin, USHORT port, LPWSTR buffer, PULONG psize)
{
WCHAR tmp_ip[32];
static const WCHAR fmt_ip[] = {'%','u','.','%','u','.','%','u','.','%','u',0};
static const WCHAR fmt_port[] = {':','%','u',0};
ULONG needed;
if (!pin || !buffer || !psize)
return STATUS_INVALID_PARAMETER;
TRACE("(%p:0x%x, %d, %p, %p:%d)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
needed = sprintfW(tmp_ip, fmt_ip,
pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
if (port) needed += sprintfW(tmp_ip + needed, fmt_port, ntohs(port));
if (*psize > needed) {
*psize = needed + 1;
strcpyW(buffer, tmp_ip);
return STATUS_SUCCESS;
}
*psize = needed + 1;
return STATUS_INVALID_PARAMETER;
}
/***********************************************************************
* RtlIpv4AddressToStringExA [NTDLL.@]
*
* Convert the given ipv4 address and optional the port to a string
*
* See RtlIpv4AddressToStringExW
*/
NTSTATUS WINAPI RtlIpv4AddressToStringExA(const IN_ADDR *pin, USHORT port, LPSTR buffer, PULONG psize)
{
CHAR tmp_ip[32];
ULONG needed;
if (!pin || !buffer || !psize)
return STATUS_INVALID_PARAMETER;
TRACE("(%p:0x%x, %d, %p, %p:%d)\n", pin, pin->S_un.S_addr, port, buffer, psize, *psize);
needed = sprintf(tmp_ip, "%u.%u.%u.%u",
pin->S_un.S_un_b.s_b1, pin->S_un.S_un_b.s_b2,
pin->S_un.S_un_b.s_b3, pin->S_un.S_un_b.s_b4);
if (port) needed += sprintf(tmp_ip + needed, ":%u", ntohs(port));
if (*psize > needed) {
*psize = needed + 1;
strcpy(buffer, tmp_ip);
return STATUS_SUCCESS;
}
*psize = needed + 1;
return STATUS_INVALID_PARAMETER;
}
/***********************************************************************
* RtlIpv4AddressToStringW [NTDLL.@]
*
* Convert the given ipv4 address to a string
*
* PARAMS
* pin [I] PTR to the ip address to convert (network byte order)
* buffer [O] destination buffer for the result (at least 16 character)
*
* RETURNS
* PTR to the 0 character at the end of the converted string
*
*/
WCHAR * WINAPI RtlIpv4AddressToStringW(const IN_ADDR *pin, LPWSTR buffer)
{
ULONG size = 16;
if (RtlIpv4AddressToStringExW(pin, 0, buffer, &size)) size = 0;
return buffer + size - 1;
}
/***********************************************************************
* RtlIpv4AddressToStringA [NTDLL.@]
*
* Convert the given ipv4 address to a string
*
* See RtlIpv4AddressToStringW
*/
CHAR * WINAPI RtlIpv4AddressToStringA(const IN_ADDR *pin, LPSTR buffer)
{
ULONG size = 16;
if (RtlIpv4AddressToStringExA(pin, 0, buffer, &size)) size = 0;
return buffer + size - 1;
}
/***********************************************************************
* get_pointer_obfuscator (internal)
*/
static DWORD_PTR get_pointer_obfuscator( void )
{
static DWORD_PTR pointer_obfuscator;
if (!pointer_obfuscator)
{
ULONG seed = NtGetTickCount();
ULONG_PTR rand;
/* generate a random value for the obfuscator */
rand = RtlUniform( &seed );
/* handle 64bit pointers */
rand ^= (ULONG_PTR)RtlUniform( &seed ) << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
/* set the high bits so dereferencing obfuscated pointers will (usually) crash */
rand |= (ULONG_PTR)0xc0000000 << ((sizeof (DWORD_PTR) - sizeof (ULONG))*8);
interlocked_cmpxchg_ptr( (void**) &pointer_obfuscator, (void*) rand, NULL );
}
return pointer_obfuscator;
}
/*************************************************************************
* RtlEncodePointer [NTDLL.@]
*/
PVOID WINAPI RtlEncodePointer( PVOID ptr )
{
DWORD_PTR ptrval = (DWORD_PTR) ptr;
return (PVOID)(ptrval ^ get_pointer_obfuscator());
}
PVOID WINAPI RtlDecodePointer( PVOID ptr )
{
DWORD_PTR ptrval = (DWORD_PTR) ptr;
return (PVOID)(ptrval ^ get_pointer_obfuscator());
}
/*************************************************************************
* RtlInitializeSListHead [NTDLL.@]
*/
VOID WINAPI RtlInitializeSListHead(PSLIST_HEADER list)
{
#ifdef _WIN64
list->s.Alignment = list->s.Region = 0;
list->Header16.HeaderType = 1; /* we use the 16-byte header */
#else
list->Alignment = 0;
#endif
}
/*************************************************************************
* RtlQueryDepthSList [NTDLL.@]
*/
WORD WINAPI RtlQueryDepthSList(PSLIST_HEADER list)
{
#ifdef _WIN64
return list->Header16.Depth;
#else
return list->s.Depth;
#endif
}
/*************************************************************************
* RtlFirstEntrySList [NTDLL.@]
*/
PSLIST_ENTRY WINAPI RtlFirstEntrySList(const SLIST_HEADER* list)
{
#ifdef _WIN64
return (SLIST_ENTRY *)((ULONG_PTR)list->Header16.NextEntry << 4);
#else
return list->s.Next.Next;
#endif
}
/*************************************************************************
* RtlInterlockedFlushSList [NTDLL.@]
*/
PSLIST_ENTRY WINAPI RtlInterlockedFlushSList(PSLIST_HEADER list)
{
SLIST_HEADER old, new;
#ifdef _WIN64
if (!list->Header16.NextEntry) return NULL;
new.s.Alignment = new.s.Region = 0;
new.Header16.HeaderType = 1; /* we use the 16-byte header */
do
{
old = *list;
new.Header16.Sequence = old.Header16.Sequence + 1;
} while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
#else
if (!list->s.Next.Next) return NULL;
new.Alignment = 0;
do
{
old = *list;
new.s.Sequence = old.s.Sequence + 1;
} while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
old.Alignment) != old.Alignment);
return old.s.Next.Next;
#endif
}
/*************************************************************************
* RtlInterlockedPushEntrySList [NTDLL.@]
*/
PSLIST_ENTRY WINAPI RtlInterlockedPushEntrySList(PSLIST_HEADER list, PSLIST_ENTRY entry)
{
SLIST_HEADER old, new;
#ifdef _WIN64
new.Header16.NextEntry = (ULONG_PTR)entry >> 4;
do
{
old = *list;
entry->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
new.Header16.Depth = old.Header16.Depth + 1;
new.Header16.Sequence = old.Header16.Sequence + 1;
} while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
#else
new.s.Next.Next = entry;
do
{
old = *list;
entry->Next = old.s.Next.Next;
new.s.Depth = old.s.Depth + 1;
new.s.Sequence = old.s.Sequence + 1;
} while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
old.Alignment) != old.Alignment);
return old.s.Next.Next;
#endif
}
/*************************************************************************
* RtlInterlockedPopEntrySList [NTDLL.@]
*/
PSLIST_ENTRY WINAPI RtlInterlockedPopEntrySList(PSLIST_HEADER list)
{
SLIST_HEADER old, new;
PSLIST_ENTRY entry;
#ifdef _WIN64
do
{
old = *list;
if (!(entry = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4))) return NULL;
/* entry could be deleted by another thread */
__TRY
{
new.Header16.NextEntry = (ULONG_PTR)entry->Next >> 4;
new.Header16.Depth = old.Header16.Depth - 1;
new.Header16.Sequence = old.Header16.Sequence + 1;
}
__EXCEPT_PAGE_FAULT
{
}
__ENDTRY
} while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
#else
do
{
old = *list;
if (!(entry = old.s.Next.Next)) return NULL;
/* entry could be deleted by another thread */
__TRY
{
new.s.Next.Next = entry->Next;
new.s.Depth = old.s.Depth - 1;
new.s.Sequence = old.s.Sequence + 1;
}
__EXCEPT_PAGE_FAULT
{
}
__ENDTRY
} while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
old.Alignment) != old.Alignment);
#endif
return entry;
}
/*************************************************************************
* RtlInterlockedPushListSListEx [NTDLL.@]
*/
PSLIST_ENTRY WINAPI RtlInterlockedPushListSListEx(PSLIST_HEADER list, PSLIST_ENTRY first,
PSLIST_ENTRY last, ULONG count)
{
SLIST_HEADER old, new;
#ifdef _WIN64
new.Header16.NextEntry = (ULONG_PTR)first >> 4;
do
{
old = *list;
new.Header16.Depth = old.Header16.Depth + count;
new.Header16.Sequence = old.Header16.Sequence + 1;
last->Next = (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
} while (!interlocked_cmpxchg128((__int64 *)list, new.s.Region, new.s.Alignment, (__int64 *)&old));
return (SLIST_ENTRY *)((ULONG_PTR)old.Header16.NextEntry << 4);
#else
new.s.Next.Next = first;
do
{
old = *list;
new.s.Depth = old.s.Depth + count;
new.s.Sequence = old.s.Sequence + 1;
last->Next = old.s.Next.Next;
} while (interlocked_cmpxchg64((__int64 *)&list->Alignment, new.Alignment,
old.Alignment) != old.Alignment);
return old.s.Next.Next;
#endif
}
/*************************************************************************
* RtlInterlockedPushListSList [NTDLL.@]
*/
#ifdef DEFINE_FASTCALL4_ENTRYPOINT
DEFINE_FASTCALL4_ENTRYPOINT(RtlInterlockedPushListSList)
PSLIST_ENTRY WINAPI DECLSPEC_HIDDEN __regs_RtlInterlockedPushListSList(PSLIST_HEADER list, PSLIST_ENTRY first,
PSLIST_ENTRY last, ULONG count)
#else
PSLIST_ENTRY WINAPI RtlInterlockedPushListSList(PSLIST_HEADER list, PSLIST_ENTRY first,
PSLIST_ENTRY last, ULONG count)
#endif
{
return RtlInterlockedPushListSListEx(list, first, last, count);
}
/******************************************************************************
* RtlGetCompressionWorkSpaceSize [NTDLL.@]
*/
NTSTATUS WINAPI RtlGetCompressionWorkSpaceSize(USHORT format, PULONG compress_workspace,
PULONG decompress_workspace)
{
FIXME("0x%04x, %p, %p: semi-stub\n", format, compress_workspace, decompress_workspace);
switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
{
case COMPRESSION_FORMAT_LZNT1:
if (compress_workspace)
{
/* FIXME: The current implementation of RtlCompressBuffer does not use a
* workspace buffer, but Windows applications might expect a nonzero value. */
*compress_workspace = 16;
}
if (decompress_workspace)
*decompress_workspace = 0x1000;
return STATUS_SUCCESS;
case COMPRESSION_FORMAT_NONE:
case COMPRESSION_FORMAT_DEFAULT:
return STATUS_INVALID_PARAMETER;
default:
FIXME("format %u not implemented\n", format);
return STATUS_UNSUPPORTED_COMPRESSION;
}
}
/* compress data using LZNT1, currently only a stub */
static NTSTATUS lznt1_compress(UCHAR *src, ULONG src_size, UCHAR *dst, ULONG dst_size,
ULONG chunk_size, ULONG *final_size, UCHAR *workspace)
{
UCHAR *src_cur = src, *src_end = src + src_size;
UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
ULONG block_size;
while (src_cur < src_end)
{
/* determine size of current chunk */
block_size = min(0x1000, src_end - src_cur);
if (dst_cur + sizeof(WORD) + block_size > dst_end)
return STATUS_BUFFER_TOO_SMALL;
/* write (uncompressed) chunk header */
*(WORD *)dst_cur = 0x3000 | (block_size - 1);
dst_cur += sizeof(WORD);
/* write chunk content */
memcpy(dst_cur, src_cur, block_size);
dst_cur += block_size;
src_cur += block_size;
}
if (final_size)
*final_size = dst_cur - dst;
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlCompressBuffer [NTDLL.@]
*/
NTSTATUS WINAPI RtlCompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
PUCHAR compressed, ULONG compressed_size, ULONG chunk_size,
PULONG final_size, PVOID workspace)
{
FIXME("0x%04x, %p, %u, %p, %u, %u, %p, %p: semi-stub\n", format, uncompressed,
uncompressed_size, compressed, compressed_size, chunk_size, final_size, workspace);
switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
{
case COMPRESSION_FORMAT_LZNT1:
return lznt1_compress(uncompressed, uncompressed_size, compressed,
compressed_size, chunk_size, final_size, workspace);
case COMPRESSION_FORMAT_NONE:
case COMPRESSION_FORMAT_DEFAULT:
return STATUS_INVALID_PARAMETER;
default:
FIXME("format %u not implemented\n", format);
return STATUS_UNSUPPORTED_COMPRESSION;
}
}
/* decompress a single LZNT1 chunk */
static UCHAR *lznt1_decompress_chunk(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size)
{
UCHAR *src_cur = src, *src_end = src + src_size;
UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
ULONG displacement_bits, length_bits;
ULONG code_displacement, code_length;
WORD flags, code;
while (src_cur < src_end && dst_cur < dst_end)
{
flags = 0x8000 | *src_cur++;
while ((flags & 0xff00) && src_cur < src_end)
{
if (flags & 1)
{
/* backwards reference */
if (src_cur + sizeof(WORD) > src_end)
return NULL;
code = *(WORD *)src_cur;
src_cur += sizeof(WORD);
/* find length / displacement bits */
for (displacement_bits = 12; displacement_bits > 4; displacement_bits--)
if ((1 << (displacement_bits - 1)) < dst_cur - dst) break;
length_bits = 16 - displacement_bits;
code_length = (code & ((1 << length_bits) - 1)) + 3;
code_displacement = (code >> length_bits) + 1;
if (dst_cur < dst + code_displacement)
return NULL;
/* copy bytes of chunk - we can't use memcpy() since source and dest can
* be overlapping, and the same bytes can be repeated over and over again */
while (code_length--)
{
if (dst_cur >= dst_end) return dst_cur;
*dst_cur = *(dst_cur - code_displacement);
dst_cur++;
}
}
else
{
/* uncompressed data */
if (dst_cur >= dst_end) return dst_cur;
*dst_cur++ = *src_cur++;
}
flags >>= 1;
}
}
return dst_cur;
}
/* decompress data encoded with LZNT1 */
static NTSTATUS lznt1_decompress(UCHAR *dst, ULONG dst_size, UCHAR *src, ULONG src_size,
ULONG offset, ULONG *final_size, UCHAR *workspace)
{
UCHAR *src_cur = src, *src_end = src + src_size;
UCHAR *dst_cur = dst, *dst_end = dst + dst_size;
ULONG chunk_size, block_size;
WORD chunk_header;
UCHAR *ptr;
if (src_cur + sizeof(WORD) > src_end)
return STATUS_BAD_COMPRESSION_BUFFER;
/* skip over chunks with a distance >= 0x1000 to the destination offset */
while (offset >= 0x1000 && src_cur + sizeof(WORD) <= src_end)
{
chunk_header = *(WORD *)src_cur;
src_cur += sizeof(WORD);
if (!chunk_header) goto out;
chunk_size = (chunk_header & 0xfff) + 1;
if (src_cur + chunk_size > src_end)
return STATUS_BAD_COMPRESSION_BUFFER;
src_cur += chunk_size;
offset -= 0x1000;
}
/* handle partially included chunk */
if (offset && src_cur + sizeof(WORD) <= src_end)
{
chunk_header = *(WORD *)src_cur;
src_cur += sizeof(WORD);
if (!chunk_header) goto out;
chunk_size = (chunk_header & 0xfff) + 1;
if (src_cur + chunk_size > src_end)
return STATUS_BAD_COMPRESSION_BUFFER;
if (dst_cur >= dst_end)
goto out;
if (chunk_header & 0x8000)
{
/* compressed chunk */
if (!workspace) return STATUS_ACCESS_VIOLATION;
ptr = lznt1_decompress_chunk(workspace, 0x1000, src_cur, chunk_size);
if (!ptr) return STATUS_BAD_COMPRESSION_BUFFER;
if (ptr - workspace > offset)
{
block_size = min((ptr - workspace) - offset, dst_end - dst_cur);
memcpy(dst_cur, workspace + offset, block_size);
dst_cur += block_size;
}
}
else
{
/* uncompressed chunk */
if (chunk_size > offset)
{
block_size = min(chunk_size - offset, dst_end - dst_cur);
memcpy(dst_cur, src_cur + offset, block_size);
dst_cur += block_size;
}
}
src_cur += chunk_size;
}
/* handle remaining chunks */
while (src_cur + sizeof(WORD) <= src_end)
{
chunk_header = *(WORD *)src_cur;
src_cur += sizeof(WORD);
if (!chunk_header) goto out;
chunk_size = (chunk_header & 0xfff) + 1;
if (src_cur + chunk_size > src_end)
return STATUS_BAD_COMPRESSION_BUFFER;
/* fill space with padding when the previous chunk was decompressed
* to less than 4096 bytes. no padding is needed for the last chunk
* or when the next chunk is truncated */
block_size = ((dst_cur - dst) + offset) & 0xfff;
if (block_size)
{
block_size = 0x1000 - block_size;
if (dst_cur + block_size >= dst_end)
goto out;
memset(dst_cur, 0, block_size);
dst_cur += block_size;
}
if (dst_cur >= dst_end)
goto out;
if (chunk_header & 0x8000)
{
/* compressed chunk */
dst_cur = lznt1_decompress_chunk(dst_cur, dst_end - dst_cur, src_cur, chunk_size);
if (!dst_cur) return STATUS_BAD_COMPRESSION_BUFFER;
}
else
{
/* uncompressed chunk */
block_size = min(chunk_size, dst_end - dst_cur);
memcpy(dst_cur, src_cur, block_size);
dst_cur += block_size;
}
src_cur += chunk_size;
}
out:
if (final_size)
*final_size = dst_cur - dst;
return STATUS_SUCCESS;
}
/******************************************************************************
* RtlDecompressFragment [NTDLL.@]
*/
NTSTATUS WINAPI RtlDecompressFragment(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
PUCHAR compressed, ULONG compressed_size, ULONG offset,
PULONG final_size, PVOID workspace)
{
TRACE("0x%04x, %p, %u, %p, %u, %u, %p, %p\n", format, uncompressed,
uncompressed_size, compressed, compressed_size, offset, final_size, workspace);
switch (format & ~COMPRESSION_ENGINE_MAXIMUM)
{
case COMPRESSION_FORMAT_LZNT1:
return lznt1_decompress(uncompressed, uncompressed_size, compressed,
compressed_size, offset, final_size, workspace);
case COMPRESSION_FORMAT_NONE:
case COMPRESSION_FORMAT_DEFAULT:
return STATUS_INVALID_PARAMETER;
default:
FIXME("format %u not implemented\n", format);
return STATUS_UNSUPPORTED_COMPRESSION;
}
}
/******************************************************************************
* RtlDecompressBuffer [NTDLL.@]
*/
NTSTATUS WINAPI RtlDecompressBuffer(USHORT format, PUCHAR uncompressed, ULONG uncompressed_size,
PUCHAR compressed, ULONG compressed_size, PULONG final_size)
{
TRACE("0x%04x, %p, %u, %p, %u, %p\n", format, uncompressed,
uncompressed_size, compressed, compressed_size, final_size);
return RtlDecompressFragment(format, uncompressed, uncompressed_size,
compressed, compressed_size, 0, final_size, NULL);
}
/***********************************************************************
* RtlSetThreadErrorMode [NTDLL.@]
*
* Set the thread local error mode.
*
* PARAMS
* mode [I] The new error mode
* oldmode [O] Destination of the old error mode (may be NULL)
*
* RETURNS
* Success: STATUS_SUCCESS
* Failure: STATUS_INVALID_PARAMETER_1
*/
NTSTATUS WINAPI RtlSetThreadErrorMode( DWORD mode, LPDWORD oldmode )
{
if (mode & ~0x70)
return STATUS_INVALID_PARAMETER_1;
if (oldmode)
*oldmode = NtCurrentTeb()->HardErrorDisabled;
NtCurrentTeb()->HardErrorDisabled = mode;
return STATUS_SUCCESS;
}
/***********************************************************************
* RtlGetThreadErrorMode [NTDLL.@]
*
* Get the thread local error mode.
*
* PARAMS
* None.
*
* RETURNS
* The current thread local error mode.
*/
DWORD WINAPI RtlGetThreadErrorMode( void )
{
return NtCurrentTeb()->HardErrorDisabled;
}
/******************************************************************************
* RtlGetCurrentTransaction [NTDLL.@]
*/
HANDLE WINAPI RtlGetCurrentTransaction(void)
{
FIXME("() :stub\n");
return NULL;
}
/******************************************************************************
* RtlSetCurrentTransaction [NTDLL.@]
*/
BOOL WINAPI RtlSetCurrentTransaction(HANDLE new_transaction)
{
FIXME("(%p) :stub\n", new_transaction);
return FALSE;
}
/**********************************************************************
* RtlGetCurrentProcessorNumberEx [NTDLL.@]
*/
void WINAPI RtlGetCurrentProcessorNumberEx(PROCESSOR_NUMBER *processor)
{
FIXME("(%p) :semi-stub\n", processor);
processor->Group = 0;
processor->Number = NtGetCurrentProcessorNumber();
processor->Reserved = 0;
}
/***********************************************************************
* RtlInitializeGenericTableAvl (NTDLL.@)
*/
void WINAPI RtlInitializeGenericTableAvl(PRTL_AVL_TABLE table, PRTL_AVL_COMPARE_ROUTINE compare,
PRTL_AVL_ALLOCATE_ROUTINE allocate, PRTL_AVL_FREE_ROUTINE free, void *context)
{
FIXME("%p %p %p %p %p: stub\n", table, compare, allocate, free, context);
}
/***********************************************************************
* RtlInsertElementGenericTableAvl (NTDLL.@)
*/
void WINAPI RtlInsertElementGenericTableAvl(PRTL_AVL_TABLE table, void *buffer, ULONG size, BOOL *element)
{
FIXME("%p %p %u %p: stub\n", table, buffer, size, element);
}
/**********************************************************************
* RtlCreateUserProcess [NTDLL.@]
*/
NTSTATUS WINAPI RtlCreateUserProcess(UNICODE_STRING *path, ULONG attributes, RTL_USER_PROCESS_PARAMETERS *parameters,
SECURITY_DESCRIPTOR *process_descriptor, SECURITY_DESCRIPTOR *thread_descriptor,
HANDLE parent, BOOLEAN inherit, HANDLE debug, HANDLE exception,
RTL_USER_PROCESS_INFORMATION *info)
{
FIXME("(%p %u %p %p %p %p %d %p %p %p): stub\n", path, attributes, parameters, process_descriptor, thread_descriptor,
parent, inherit, debug, exception, info);
return STATUS_NOT_IMPLEMENTED;
}
typedef struct _RTL_UNLOAD_EVENT_TRACE
{
PVOID BaseAddress;
SIZE_T SizeOfImage;
ULONG Sequence;
ULONG TimeDateStamp;
ULONG CheckSum;
WCHAR ImageName[32];
} RTL_UNLOAD_EVENT_TRACE, *PRTL_UNLOAD_EVENT_TRACE;
/*********************************************************************
* RtlGetUnloadEventTrace [NTDLL.@]
*/
RTL_UNLOAD_EVENT_TRACE * WINAPI RtlGetUnloadEventTrace(void)
{
FIXME("stub!\n");
return NULL;
}