reactos/dll/win32/kernel32/client/virtmem.c
Hermès Bélusca-Maïto 65ce146169 Create a branch for working on csrss and co.
svn path=/branches/ros-csrss/; revision=57561
2012-10-14 13:04:31 +00:00

429 lines
9.3 KiB
C

/*
* PROJECT: ReactOS Win32 Base API
* LICENSE: GPL - See COPYING in the top level directory
* FILE: dll/win32/kernel32/client/virtmem.c
* PURPOSE: Handles virtual memory APIs
* PROGRAMMERS: Alex Ionescu (alex.ionescu@reactos.org)
*/
/* INCLUDES *******************************************************************/
#include <k32.h>
#define NDEBUG
#include <debug.h>
/* FUNCTIONS ******************************************************************/
/*
* @implemented
*/
LPVOID
NTAPI
VirtualAllocEx(IN HANDLE hProcess,
IN LPVOID lpAddress,
IN SIZE_T dwSize,
IN DWORD flAllocationType,
IN DWORD flProtect)
{
NTSTATUS Status;
/* Make sure the address is within the granularity of the system (64K) */
if ((lpAddress) &&
(lpAddress < (PVOID)BaseStaticServerData->SysInfo.AllocationGranularity))
{
/* Fail the call */
SetLastError(ERROR_INVALID_PARAMETER);
return NULL;
}
/* Handle any possible exceptions */
_SEH2_TRY
{
/* Allocate the memory */
Status = NtAllocateVirtualMemory(hProcess,
&lpAddress,
0,
&dwSize,
flAllocationType,
flProtect);
}
_SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
{
Status = _SEH2_GetExceptionCode();
}
_SEH2_END;
/* Check for status */
if (!NT_SUCCESS(Status))
{
/* We failed */
BaseSetLastNTError(Status);
return NULL;
}
/* Return the allocated address */
return lpAddress;
}
/*
* @implemented
*/
LPVOID
NTAPI
VirtualAlloc(IN LPVOID lpAddress,
IN SIZE_T dwSize,
IN DWORD flAllocationType,
IN DWORD flProtect)
{
/* Call the extended API */
return VirtualAllocEx(GetCurrentProcess(),
lpAddress,
dwSize,
flAllocationType,
flProtect);
}
/*
* @implemented
*/
BOOL
NTAPI
VirtualFreeEx(IN HANDLE hProcess,
IN LPVOID lpAddress,
IN SIZE_T dwSize,
IN DWORD dwFreeType)
{
NTSTATUS Status;
/* Validate size and flags */
if (!(dwSize) || !(dwFreeType & MEM_RELEASE))
{
/* Free the memory */
Status = NtFreeVirtualMemory(hProcess,
&lpAddress,
&dwSize,
dwFreeType);
if (!NT_SUCCESS(Status))
{
/* We failed */
BaseSetLastNTError(Status);
return FALSE;
}
/* Return success */
return TRUE;
}
/* Invalid combo */
BaseSetLastNTError(STATUS_INVALID_PARAMETER);
return FALSE;
}
/*
* @implemented
*/
BOOL
NTAPI
VirtualFree(IN LPVOID lpAddress,
IN SIZE_T dwSize,
IN DWORD dwFreeType)
{
/* Call the extended API */
return VirtualFreeEx(GetCurrentProcess(),
lpAddress,
dwSize,
dwFreeType);
}
/*
* @implemented
*/
BOOL
NTAPI
VirtualProtect(IN LPVOID lpAddress,
IN SIZE_T dwSize,
IN DWORD flNewProtect,
OUT PDWORD lpflOldProtect)
{
/* Call the extended API */
return VirtualProtectEx(GetCurrentProcess(),
lpAddress,
dwSize,
flNewProtect,
lpflOldProtect);
}
/*
* @implemented
*/
BOOL
NTAPI
VirtualProtectEx(IN HANDLE hProcess,
IN LPVOID lpAddress,
IN SIZE_T dwSize,
IN DWORD flNewProtect,
OUT PDWORD lpflOldProtect)
{
NTSTATUS Status;
/* Change the protection */
Status = NtProtectVirtualMemory(hProcess,
&lpAddress,
&dwSize,
flNewProtect,
(PULONG)lpflOldProtect);
if (!NT_SUCCESS(Status))
{
/* We failed */
BaseSetLastNTError(Status);
return FALSE;
}
/* Return success */
return TRUE;
}
/*
* @implemented
*/
BOOL
NTAPI
VirtualLock(IN LPVOID lpAddress,
IN SIZE_T dwSize)
{
NTSTATUS Status;
SIZE_T RegionSize = dwSize;
PVOID BaseAddress = lpAddress;
/* Lock the memory */
Status = NtLockVirtualMemory(NtCurrentProcess(),
&BaseAddress,
&RegionSize,
MAP_PROCESS);
if (!NT_SUCCESS(Status))
{
/* We failed */
BaseSetLastNTError(Status);
return FALSE;
}
/* Return success */
return TRUE;
}
/*
* @implemented
*/
SIZE_T
NTAPI
VirtualQuery(IN LPCVOID lpAddress,
OUT PMEMORY_BASIC_INFORMATION lpBuffer,
IN SIZE_T dwLength)
{
/* Call the extended API */
return VirtualQueryEx(NtCurrentProcess(),
lpAddress,
lpBuffer,
dwLength);
}
/*
* @implemented
*/
SIZE_T
NTAPI
VirtualQueryEx(IN HANDLE hProcess,
IN LPCVOID lpAddress,
OUT PMEMORY_BASIC_INFORMATION lpBuffer,
IN SIZE_T dwLength)
{
NTSTATUS Status;
SIZE_T ResultLength;
/* Query basic information */
Status = NtQueryVirtualMemory(hProcess,
(LPVOID)lpAddress,
MemoryBasicInformation,
lpBuffer,
dwLength,
&ResultLength);
if (!NT_SUCCESS(Status))
{
/* We failed */
BaseSetLastNTError(Status);
return 0;
}
/* Return the length returned */
return ResultLength;
}
/*
* @implemented
*/
BOOL
NTAPI
VirtualUnlock(IN LPVOID lpAddress,
IN SIZE_T dwSize)
{
NTSTATUS Status;
SIZE_T RegionSize = dwSize;
PVOID BaseAddress = lpAddress;
/* Lock the memory */
Status = NtUnlockVirtualMemory(NtCurrentProcess(),
&BaseAddress,
&RegionSize,
MAP_PROCESS);
if (!NT_SUCCESS(Status))
{
/* We failed */
BaseSetLastNTError(Status);
return FALSE;
}
/* Return success */
return TRUE;
}
/*
* @implemented
*/
UINT
WINAPI
GetWriteWatch(IN DWORD dwFlags,
IN PVOID lpBaseAddress,
IN SIZE_T dwRegionSize,
IN PVOID *lpAddresses,
OUT PULONG_PTR lpdwCount,
OUT PULONG lpdwGranularity)
{
NTSTATUS Status;
Status = NtGetWriteWatch(GetCurrentProcess(),
dwFlags,
lpBaseAddress,
dwRegionSize,
lpAddresses,
lpdwCount,
lpdwGranularity);
if (!NT_SUCCESS(Status))
{
BaseSetLastNTError(Status);
return -1;
}
return 0;
}
/*
* @implemented
*/
UINT
WINAPI
ResetWriteWatch(IN LPVOID lpBaseAddress,
IN SIZE_T dwRegionSize)
{
NTSTATUS Status;
Status = NtResetWriteWatch(NtCurrentProcess(),
lpBaseAddress,
dwRegionSize);
if (!NT_SUCCESS(Status))
{
BaseSetLastNTError(Status);
return -1;
}
return 0;
}
/*
* @implemented
*/
BOOL
WINAPI
AllocateUserPhysicalPages(IN HANDLE hProcess,
IN PULONG_PTR NumberOfPages,
OUT PULONG_PTR UserPfnArray)
{
NTSTATUS Status;
Status = NtAllocateUserPhysicalPages(hProcess, NumberOfPages, UserPfnArray);
if (!NT_SUCCESS(Status))
{
BaseSetLastNTError(Status);
return FALSE;
}
return TRUE;
}
/*
* @implemented
*/
BOOL
WINAPI
FreeUserPhysicalPages(IN HANDLE hProcess,
IN PULONG_PTR NumberOfPages,
IN PULONG_PTR PageArray)
{
NTSTATUS Status;
Status = NtFreeUserPhysicalPages(hProcess, NumberOfPages, PageArray);
if (!NT_SUCCESS(Status))
{
BaseSetLastNTError(Status);
return FALSE;
}
return TRUE;
}
/*
* @implemented
*/
BOOL
WINAPI
MapUserPhysicalPages(IN PVOID VirtualAddress,
IN ULONG_PTR NumberOfPages,
OUT PULONG_PTR PageArray OPTIONAL)
{
NTSTATUS Status;
Status = NtMapUserPhysicalPages(VirtualAddress, NumberOfPages, PageArray);
if (!NT_SUCCESS(Status))
{
BaseSetLastNTError(Status);
return FALSE;
}
return TRUE;
}
/*
* @implemented
*/
BOOL
WINAPI
MapUserPhysicalPagesScatter(IN PVOID *VirtualAddresses,
IN ULONG_PTR NumberOfPages,
OUT PULONG_PTR PageArray OPTIONAL)
{
NTSTATUS Status;
Status = NtMapUserPhysicalPagesScatter(VirtualAddresses,
NumberOfPages,
PageArray);
if (!NT_SUCCESS(Status))
{
BaseSetLastNTError(Status);
return FALSE;
}
return TRUE;
}
/* EOF */