Sweden-Number/dlls/kernelbase/memory.c

791 lines
24 KiB
C

/*
* Win32 memory management functions
*
* Copyright 1997 Alexandre Julliard
*
* 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 <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <limits.h>
#include <sys/types.h>
#include "ntstatus.h"
#define WIN32_NO_STATUS
#define NONAMELESSUNION
#include "windef.h"
#include "winbase.h"
#include "winnls.h"
#include "winternl.h"
#include "winerror.h"
#include "kernelbase.h"
#include "wine/exception.h"
#include "wine/debug.h"
WINE_DEFAULT_DEBUG_CHANNEL(heap);
/***********************************************************************
* Virtual memory functions
***********************************************************************/
/***********************************************************************
* FlushViewOfFile (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH FlushViewOfFile( const void *base, SIZE_T size )
{
NTSTATUS status = NtFlushVirtualMemory( GetCurrentProcess(), &base, &size, 0 );
if (status)
{
if (status == STATUS_NOT_MAPPED_DATA) status = STATUS_SUCCESS;
else SetLastError( RtlNtStatusToDosError(status) );
}
return !status;
}
/***********************************************************************
* GetWriteWatch (kernelbase.@)
*/
UINT WINAPI DECLSPEC_HOTPATCH GetWriteWatch( DWORD flags, void *base, SIZE_T size, void **addresses,
ULONG_PTR *count, ULONG *granularity )
{
if (!set_ntstatus( NtGetWriteWatch( GetCurrentProcess(), flags, base, size,
addresses, count, granularity )))
return ~0u;
return 0;
}
/***********************************************************************
* MapViewOfFile (kernelbase.@)
*/
LPVOID WINAPI DECLSPEC_HOTPATCH MapViewOfFile( HANDLE mapping, DWORD access, DWORD offset_high,
DWORD offset_low, SIZE_T count )
{
return MapViewOfFileEx( mapping, access, offset_high, offset_low, count, NULL );
}
/***********************************************************************
* MapViewOfFileEx (kernelbase.@)
*/
LPVOID WINAPI DECLSPEC_HOTPATCH MapViewOfFileEx( HANDLE handle, DWORD access, DWORD offset_high,
DWORD offset_low, SIZE_T count, LPVOID addr )
{
NTSTATUS status;
LARGE_INTEGER offset;
ULONG protect;
BOOL exec;
offset.u.LowPart = offset_low;
offset.u.HighPart = offset_high;
exec = access & FILE_MAP_EXECUTE;
access &= ~FILE_MAP_EXECUTE;
if (access == FILE_MAP_COPY)
protect = exec ? PAGE_EXECUTE_WRITECOPY : PAGE_WRITECOPY;
else if (access & FILE_MAP_WRITE)
protect = exec ? PAGE_EXECUTE_READWRITE : PAGE_READWRITE;
else if (access & FILE_MAP_READ)
protect = exec ? PAGE_EXECUTE_READ : PAGE_READONLY;
else protect = PAGE_NOACCESS;
if ((status = NtMapViewOfSection( handle, GetCurrentProcess(), &addr, 0, 0, &offset,
&count, ViewShare, 0, protect )) < 0)
{
SetLastError( RtlNtStatusToDosError(status) );
addr = NULL;
}
return addr;
}
/***********************************************************************
* MapViewOfFileExNuma (kernelbase.@)
*/
LPVOID WINAPI DECLSPEC_HOTPATCH MapViewOfFileExNuma( HANDLE handle, DWORD access, DWORD offset_high,
DWORD offset_low, SIZE_T count, LPVOID addr,
DWORD numa_node )
{
FIXME( "Ignoring preferred numa_node\n" );
return MapViewOfFileEx( handle, access, offset_high, offset_low, count, addr );
}
/***********************************************************************
* ReadProcessMemory (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH ReadProcessMemory( HANDLE process, const void *addr, void *buffer,
SIZE_T size, SIZE_T *bytes_read )
{
return set_ntstatus( NtReadVirtualMemory( process, addr, buffer, size, bytes_read ));
}
/***********************************************************************
* ResetWriteWatch (kernelbase.@)
*/
UINT WINAPI DECLSPEC_HOTPATCH ResetWriteWatch( void *base, SIZE_T size )
{
if (!set_ntstatus( NtResetWriteWatch( GetCurrentProcess(), base, size )))
return ~0u;
return 0;
}
/***********************************************************************
* UnmapViewOfFile (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH UnmapViewOfFile( const void *addr )
{
if (GetVersion() & 0x80000000)
{
MEMORY_BASIC_INFORMATION info;
if (!VirtualQuery( addr, &info, sizeof(info) ) || info.AllocationBase != addr)
{
SetLastError( ERROR_INVALID_ADDRESS );
return FALSE;
}
}
return set_ntstatus( NtUnmapViewOfSection( GetCurrentProcess(), (void *)addr ));
}
/***********************************************************************
* VirtualAlloc (kernelbase.@)
*/
LPVOID WINAPI DECLSPEC_HOTPATCH VirtualAlloc( void *addr, SIZE_T size, DWORD type, DWORD protect )
{
return VirtualAllocEx( GetCurrentProcess(), addr, size, type, protect );
}
/***********************************************************************
* VirtualAllocEx (kernelbase.@)
*/
LPVOID WINAPI DECLSPEC_HOTPATCH VirtualAllocEx( HANDLE process, void *addr, SIZE_T size,
DWORD type, DWORD protect )
{
LPVOID ret = addr;
if (!set_ntstatus( NtAllocateVirtualMemory( process, &ret, 0, &size, type, protect ))) return NULL;
return ret;
}
/***********************************************************************
* VirtualAllocExNuma (kernelbase.@)
*/
LPVOID WINAPI DECLSPEC_HOTPATCH VirtualAllocExNuma( HANDLE process, void *addr, SIZE_T size,
DWORD type, DWORD protect, DWORD numa_node )
{
FIXME( "Ignoring preferred numa_node\n" );
return VirtualAllocEx( process, addr, size, type, protect );
}
/***********************************************************************
* VirtualFree (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH VirtualFree( void *addr, SIZE_T size, DWORD type )
{
return VirtualFreeEx( GetCurrentProcess(), addr, size, type );
}
/***********************************************************************
* VirtualFreeEx (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH VirtualFreeEx( HANDLE process, void *addr, SIZE_T size, DWORD type )
{
return set_ntstatus( NtFreeVirtualMemory( process, &addr, &size, type ));
}
/***********************************************************************
* VirtualLock (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH VirtualLock( void *addr, SIZE_T size )
{
return set_ntstatus( NtLockVirtualMemory( GetCurrentProcess(), &addr, &size, 1 ));
}
/***********************************************************************
* VirtualProtect (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH VirtualProtect( void *addr, SIZE_T size, DWORD new_prot, DWORD *old_prot )
{
return VirtualProtectEx( GetCurrentProcess(), addr, size, new_prot, old_prot );
}
/***********************************************************************
* VirtualProtectEx (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH VirtualProtectEx( HANDLE process, void *addr, SIZE_T size,
DWORD new_prot, DWORD *old_prot )
{
DWORD prot;
/* Win9x allows passing NULL as old_prot while this fails on NT */
if (!old_prot && (GetVersion() & 0x80000000)) old_prot = &prot;
return set_ntstatus( NtProtectVirtualMemory( process, &addr, &size, new_prot, old_prot ));
}
/***********************************************************************
* VirtualQuery (kernelbase.@)
*/
SIZE_T WINAPI DECLSPEC_HOTPATCH VirtualQuery( LPCVOID addr, PMEMORY_BASIC_INFORMATION info, SIZE_T len )
{
return VirtualQueryEx( GetCurrentProcess(), addr, info, len );
}
/***********************************************************************
* VirtualQueryEx (kernelbase.@)
*/
SIZE_T WINAPI DECLSPEC_HOTPATCH VirtualQueryEx( HANDLE process, LPCVOID addr,
PMEMORY_BASIC_INFORMATION info, SIZE_T len )
{
SIZE_T ret;
if (!set_ntstatus( NtQueryVirtualMemory( process, addr, MemoryBasicInformation, info, len, &ret )))
return 0;
return ret;
}
/***********************************************************************
* VirtualUnlock (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH VirtualUnlock( void *addr, SIZE_T size )
{
return set_ntstatus( NtUnlockVirtualMemory( GetCurrentProcess(), &addr, &size, 1 ));
}
/***********************************************************************
* WriteProcessMemory (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH WriteProcessMemory( HANDLE process, void *addr, const void *buffer,
SIZE_T size, SIZE_T *bytes_written )
{
return set_ntstatus( NtWriteVirtualMemory( process, addr, buffer, size, bytes_written ));
}
/***********************************************************************
* Heap functions
***********************************************************************/
/***********************************************************************
* HeapCompact (kernelbase.@)
*/
SIZE_T WINAPI DECLSPEC_HOTPATCH HeapCompact( HANDLE heap, DWORD flags )
{
return RtlCompactHeap( heap, flags );
}
/***********************************************************************
* HeapCreate (kernelbase.@)
*/
HANDLE WINAPI DECLSPEC_HOTPATCH HeapCreate( DWORD flags, SIZE_T init_size, SIZE_T max_size )
{
HANDLE ret = RtlCreateHeap( flags, NULL, max_size, init_size, NULL, NULL );
if (!ret) SetLastError( ERROR_NOT_ENOUGH_MEMORY );
return ret;
}
/***********************************************************************
* HeapDestroy (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH HeapDestroy( HANDLE heap )
{
if (!RtlDestroyHeap( heap )) return TRUE;
SetLastError( ERROR_INVALID_HANDLE );
return FALSE;
}
/***********************************************************************
* HeapLock (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH HeapLock( HANDLE heap )
{
return RtlLockHeap( heap );
}
/***********************************************************************
* HeapQueryInformation (kernelbase.@)
*/
BOOL WINAPI HeapQueryInformation( HANDLE heap, HEAP_INFORMATION_CLASS info_class,
PVOID info, SIZE_T size, PSIZE_T size_out )
{
return set_ntstatus( RtlQueryHeapInformation( heap, info_class, info, size, size_out ));
}
/***********************************************************************
* HeapSetInformation (kernelbase.@)
*/
BOOL WINAPI HeapSetInformation( HANDLE heap, HEAP_INFORMATION_CLASS infoclass, PVOID info, SIZE_T size )
{
return set_ntstatus( RtlSetHeapInformation( heap, infoclass, info, size ));
}
/***********************************************************************
* HeapUnlock (kernelbase.@)
*/
BOOL WINAPI HeapUnlock( HANDLE heap )
{
return RtlUnlockHeap( heap );
}
/***********************************************************************
* HeapValidate (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH HeapValidate( HANDLE heap, DWORD flags, LPCVOID ptr )
{
return RtlValidateHeap( heap, flags, ptr );
}
/***********************************************************************
* HeapWalk (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH HeapWalk( HANDLE heap, PROCESS_HEAP_ENTRY *entry )
{
return set_ntstatus( RtlWalkHeap( heap, entry ));
}
/***********************************************************************
* Global/local heap functions
***********************************************************************/
#include "pshpack1.h"
struct local_header
{
WORD magic;
void *ptr;
BYTE flags;
BYTE lock;
};
#include "poppack.h"
#define MAGIC_LOCAL_USED 0x5342
/* align the storage needed for the HLOCAL on an 8-byte boundary thus
* LocalAlloc/LocalReAlloc'ing with LMEM_MOVEABLE of memory with
* size = 8*k, where k=1,2,3,... allocs exactly the given size.
* The Minolta DiMAGE Image Viewer heavily relies on this, corrupting
* the output jpeg's > 1 MB if not */
#define HLOCAL_STORAGE (sizeof(HLOCAL) * 2)
static inline struct local_header *get_header( HLOCAL hmem )
{
return (struct local_header *)((char *)hmem - 2);
}
static inline HLOCAL get_handle( struct local_header *header )
{
return &header->ptr;
}
static inline BOOL is_pointer( HLOCAL hmem )
{
return !((ULONG_PTR)hmem & 2);
}
/***********************************************************************
* GlobalAlloc (kernelbase.@)
*/
HGLOBAL WINAPI DECLSPEC_HOTPATCH GlobalAlloc( UINT flags, SIZE_T size )
{
/* mask out obsolete flags */
flags &= ~(GMEM_NOCOMPACT | GMEM_NOT_BANKED | GMEM_NOTIFY);
/* LocalAlloc allows a 0-size fixed block, but GlobalAlloc doesn't */
if (!(flags & GMEM_MOVEABLE) && !size) size = 1;
return LocalAlloc( flags, size );
}
/***********************************************************************
* GlobalFree (kernelbase.@)
*/
HGLOBAL WINAPI DECLSPEC_HOTPATCH GlobalFree( HLOCAL hmem )
{
return LocalFree( hmem );
}
/***********************************************************************
* LocalAlloc (kernelbase.@)
*/
HLOCAL WINAPI DECLSPEC_HOTPATCH LocalAlloc( UINT flags, SIZE_T size )
{
struct local_header *header;
DWORD heap_flags = 0;
void *ptr;
if (flags & LMEM_ZEROINIT) heap_flags = HEAP_ZERO_MEMORY;
if (!(flags & LMEM_MOVEABLE)) /* pointer */
{
ptr = HeapAlloc( GetProcessHeap(), heap_flags, size );
TRACE( "(flags=%04x) returning %p\n", flags, ptr );
return ptr;
}
if (size > INT_MAX - HLOCAL_STORAGE)
{
SetLastError( ERROR_OUTOFMEMORY );
return 0;
}
if (!(header = HeapAlloc( GetProcessHeap(), 0, sizeof(*header) ))) return 0;
header->magic = MAGIC_LOCAL_USED;
header->flags = flags >> 8;
header->lock = 0;
if (size)
{
if (!(ptr = HeapAlloc(GetProcessHeap(), heap_flags, size + HLOCAL_STORAGE )))
{
HeapFree( GetProcessHeap(), 0, header );
return 0;
}
*(HLOCAL *)ptr = get_handle( header );
header->ptr = (char *)ptr + HLOCAL_STORAGE;
}
else header->ptr = NULL;
TRACE( "(flags=%04x) returning handle %p pointer %p\n",
flags, get_handle( header ), header->ptr );
return get_handle( header );
}
/***********************************************************************
* LocalFree (kernelbase.@)
*/
HLOCAL WINAPI DECLSPEC_HOTPATCH LocalFree( HLOCAL hmem )
{
struct local_header *header;
HLOCAL ret;
RtlLockHeap( GetProcessHeap() );
__TRY
{
ret = 0;
if (is_pointer(hmem)) /* POINTER */
{
if (!HeapFree( GetProcessHeap(), HEAP_NO_SERIALIZE, hmem ))
{
SetLastError( ERROR_INVALID_HANDLE );
ret = hmem;
}
}
else /* HANDLE */
{
header = get_header( hmem );
if (header->magic == MAGIC_LOCAL_USED)
{
header->magic = 0xdead;
if (header->ptr)
{
if (!HeapFree( GetProcessHeap(), HEAP_NO_SERIALIZE,
(char *)header->ptr - HLOCAL_STORAGE ))
ret = hmem;
}
if (!HeapFree( GetProcessHeap(), HEAP_NO_SERIALIZE, header )) ret = hmem;
}
else
{
WARN( "invalid handle %p (magic: 0x%04x)\n", hmem, header->magic );
SetLastError( ERROR_INVALID_HANDLE );
ret = hmem;
}
}
}
__EXCEPT_PAGE_FAULT
{
WARN( "invalid handle %p\n", hmem );
SetLastError( ERROR_INVALID_HANDLE );
ret = hmem;
}
__ENDTRY
RtlUnlockHeap( GetProcessHeap() );
return ret;
}
/***********************************************************************
* LocalLock (kernelbase.@)
*/
LPVOID WINAPI DECLSPEC_HOTPATCH LocalLock( HLOCAL hmem )
{
void *ret = NULL;
if (is_pointer( hmem )) return IsBadReadPtr( hmem, 1 ) ? NULL : hmem;
RtlLockHeap( GetProcessHeap() );
__TRY
{
struct local_header *header = get_header( hmem );
if (header->magic == MAGIC_LOCAL_USED)
{
ret = header->ptr;
if (!header->ptr) SetLastError( ERROR_DISCARDED );
else if (header->lock < LMEM_LOCKCOUNT) header->lock++;
}
else
{
WARN( "invalid handle %p (magic: 0x%04x)\n", hmem, header->magic );
SetLastError( ERROR_INVALID_HANDLE );
}
}
__EXCEPT_PAGE_FAULT
{
WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
SetLastError( ERROR_INVALID_HANDLE );
}
__ENDTRY
RtlUnlockHeap( GetProcessHeap() );
return ret;
}
/***********************************************************************
* LocalReAlloc (kernelbase.@)
*/
HLOCAL WINAPI DECLSPEC_HOTPATCH LocalReAlloc( HLOCAL hmem, SIZE_T size, UINT flags )
{
struct local_header *header;
void *ptr;
HLOCAL ret = 0;
DWORD heap_flags = (flags & LMEM_ZEROINIT) ? HEAP_ZERO_MEMORY : 0;
RtlLockHeap( GetProcessHeap() );
if (flags & LMEM_MODIFY) /* modify flags */
{
if (is_pointer( hmem ) && (flags & LMEM_MOVEABLE))
{
/* make a fixed block moveable
* actually only NT is able to do this. But it's soo simple
*/
if (hmem == 0)
{
WARN( "null handle\n");
SetLastError( ERROR_NOACCESS );
}
else
{
size = RtlSizeHeap( GetProcessHeap(), 0, hmem );
ret = LocalAlloc( flags, size );
ptr = LocalLock( ret );
memcpy( ptr, hmem, size );
LocalUnlock( ret );
LocalFree( hmem );
}
}
else if (!is_pointer( hmem ) && (flags & LMEM_DISCARDABLE))
{
/* change the flags to make our block "discardable" */
header = get_header( hmem );
header->flags |= LMEM_DISCARDABLE >> 8;
ret = hmem;
}
else SetLastError( ERROR_INVALID_PARAMETER );
}
else
{
if (is_pointer( hmem ))
{
/* reallocate fixed memory */
if (!(flags & LMEM_MOVEABLE)) heap_flags |= HEAP_REALLOC_IN_PLACE_ONLY;
ret = HeapReAlloc( GetProcessHeap(), heap_flags, hmem, size );
}
else
{
/* reallocate a moveable block */
header = get_header( hmem );
if (size != 0)
{
if (size <= INT_MAX - HLOCAL_STORAGE)
{
if (header->ptr)
{
if ((ptr = HeapReAlloc( GetProcessHeap(), heap_flags,
(char *)header->ptr - HLOCAL_STORAGE,
size + HLOCAL_STORAGE )))
{
header->ptr = (char *)ptr + HLOCAL_STORAGE;
ret = hmem;
}
}
else
{
if ((ptr = HeapAlloc( GetProcessHeap(), heap_flags, size + HLOCAL_STORAGE )))
{
*(HLOCAL *)ptr = hmem;
header->ptr = (char *)ptr + HLOCAL_STORAGE;
ret = hmem;
}
}
}
else SetLastError( ERROR_OUTOFMEMORY );
}
else
{
if (header->lock == 0)
{
if (header->ptr)
{
HeapFree( GetProcessHeap(), 0, (char *)header->ptr - HLOCAL_STORAGE );
header->ptr = NULL;
}
ret = hmem;
}
else WARN( "not freeing memory associated with locked handle\n" );
}
}
}
RtlUnlockHeap( GetProcessHeap() );
return ret;
}
/***********************************************************************
* LocalUnlock (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH LocalUnlock( HLOCAL hmem )
{
BOOL ret = FALSE;
if (is_pointer( hmem ))
{
SetLastError( ERROR_NOT_LOCKED );
return FALSE;
}
RtlLockHeap( GetProcessHeap() );
__TRY
{
struct local_header *header = get_header( hmem );
if (header->magic == MAGIC_LOCAL_USED)
{
if (header->lock)
{
header->lock--;
ret = (header->lock != 0);
if (!ret) SetLastError( NO_ERROR );
}
else
{
WARN( "%p not locked\n", hmem );
SetLastError( ERROR_NOT_LOCKED );
}
}
else
{
WARN( "invalid handle %p (Magic: 0x%04x)\n", hmem, header->magic );
SetLastError( ERROR_INVALID_HANDLE );
}
}
__EXCEPT_PAGE_FAULT
{
WARN("(%p): Page fault occurred ! Caused by bug ?\n", hmem);
SetLastError( ERROR_INVALID_PARAMETER );
}
__ENDTRY
RtlUnlockHeap( GetProcessHeap() );
return ret;
}
/***********************************************************************
* Memory resource functions
***********************************************************************/
/***********************************************************************
* CreateMemoryResourceNotification (kernelbase.@)
*/
HANDLE WINAPI DECLSPEC_HOTPATCH CreateMemoryResourceNotification( MEMORY_RESOURCE_NOTIFICATION_TYPE type )
{
static const WCHAR lowmemW[] =
{'\\','K','e','r','n','e','l','O','b','j','e','c','t','s',
'\\','L','o','w','M','e','m','o','r','y','C','o','n','d','i','t','i','o','n',0};
static const WCHAR highmemW[] =
{'\\','K','e','r','n','e','l','O','b','j','e','c','t','s',
'\\','H','i','g','h','M','e','m','o','r','y','C','o','n','d','i','t','i','o','n',0};
HANDLE ret;
UNICODE_STRING nameW;
OBJECT_ATTRIBUTES attr;
switch (type)
{
case LowMemoryResourceNotification:
RtlInitUnicodeString( &nameW, lowmemW );
break;
case HighMemoryResourceNotification:
RtlInitUnicodeString( &nameW, highmemW );
break;
default:
SetLastError( ERROR_INVALID_PARAMETER );
return 0;
}
InitializeObjectAttributes( &attr, &nameW, 0, 0, NULL );
if (!set_ntstatus( NtOpenEvent( &ret, EVENT_ALL_ACCESS, &attr ))) return 0;
return ret;
}
/***********************************************************************
* QueryMemoryResourceNotification (kernelbase.@)
*/
BOOL WINAPI DECLSPEC_HOTPATCH QueryMemoryResourceNotification( HANDLE handle, BOOL *state )
{
switch (WaitForSingleObject( handle, 0 ))
{
case WAIT_OBJECT_0:
*state = TRUE;
return TRUE;
case WAIT_TIMEOUT:
*state = FALSE;
return TRUE;
}
SetLastError( ERROR_INVALID_PARAMETER );
return FALSE;
}