+++ /dev/null
-/* $Id$
- *
- * COPYRIGHT: See COPYING in the top level directory
- * PROJECT: ReactOS kernel
- * FILE: lib/kernel32/mem/section.c
- * PURPOSE: Implementing file mapping
- * PROGRAMMER: David Welch (welch@mcmail.com)
- */
-
-/* INCLUDES ******************************************************************/
-
-#include <k32.h>
-
-#define NDEBUG
-#include "../include/debug.h"
-
-/* FUNCTIONS *****************************************************************/
-
-#define MASK_PAGE_FLAGS (PAGE_READONLY | PAGE_READWRITE | PAGE_WRITECOPY)
-#define MASK_SEC_FLAGS (SEC_COMMIT | SEC_IMAGE | SEC_NOCACHE | SEC_RESERVE)
-
-/*
- * @implemented
- */
-HANDLE STDCALL
-CreateFileMappingA(HANDLE hFile,
- LPSECURITY_ATTRIBUTES lpFileMappingAttributes,
- DWORD flProtect,
- DWORD dwMaximumSizeHigh,
- DWORD dwMaximumSizeLow,
- LPCSTR lpName)
-{
- NTSTATUS Status;
- HANDLE SectionHandle;
- LARGE_INTEGER MaximumSize;
- PLARGE_INTEGER MaximumSizePointer;
- OBJECT_ATTRIBUTES ObjectAttributes;
- ANSI_STRING AnsiName;
- UNICODE_STRING UnicodeName;
- PSECURITY_DESCRIPTOR SecurityDescriptor;
-
- if ((flProtect & (MASK_PAGE_FLAGS | MASK_SEC_FLAGS)) != flProtect)
- {
- DPRINT1("Invalid flProtect 0x%08x\n", flProtect);
- SetLastError(ERROR_INVALID_PARAMETER);
- return NULL;
- }
- if (lpFileMappingAttributes)
- {
- SecurityDescriptor = lpFileMappingAttributes->lpSecurityDescriptor;
- }
- else
- {
- SecurityDescriptor = NULL;
- }
-
- if (dwMaximumSizeLow == 0 && dwMaximumSizeHigh == 0)
- {
- MaximumSizePointer = NULL;
- }
- else
- {
- MaximumSize.u.LowPart = dwMaximumSizeLow;
- MaximumSize.u.HighPart = dwMaximumSizeHigh;
- MaximumSizePointer = &MaximumSize;
- }
-
- if (lpName != NULL)
- {
- RtlInitAnsiString(&AnsiName,
- (LPSTR)lpName);
- RtlAnsiStringToUnicodeString(&UnicodeName,
- &AnsiName,
- TRUE);
- }
-
- InitializeObjectAttributes(&ObjectAttributes,
- (lpName ? &UnicodeName : NULL),
- 0,
- (lpName ? hBaseDir : NULL),
- SecurityDescriptor);
-
- Status = NtCreateSection(&SectionHandle,
- SECTION_ALL_ACCESS,
- &ObjectAttributes,
- MaximumSizePointer,
- flProtect & MASK_PAGE_FLAGS,
- flProtect & MASK_SEC_FLAGS,
- ((hFile != INVALID_HANDLE_VALUE) ? hFile : NULL));
- if (lpName != NULL)
- {
- RtlFreeUnicodeString(&UnicodeName);
- }
-
- if (!NT_SUCCESS(Status))
- {
- SetLastErrorByStatus(Status);
- return NULL;
- }
- return SectionHandle;
-}
-
-
-/*
- * @implemented
- */
-HANDLE STDCALL
-CreateFileMappingW(HANDLE hFile,
- LPSECURITY_ATTRIBUTES lpFileMappingAttributes,
- DWORD flProtect,
- DWORD dwMaximumSizeHigh,
- DWORD dwMaximumSizeLow,
- LPCWSTR lpName)
-{
- NTSTATUS Status;
- HANDLE SectionHandle;
- LARGE_INTEGER MaximumSize;
- PLARGE_INTEGER MaximumSizePointer;
- OBJECT_ATTRIBUTES ObjectAttributes;
- UNICODE_STRING UnicodeName;
- PSECURITY_DESCRIPTOR SecurityDescriptor;
-
- if ((flProtect & (MASK_PAGE_FLAGS | MASK_SEC_FLAGS)) != flProtect)
- {
- DPRINT1("Invalid flProtect 0x%08x\n", flProtect);
- SetLastError(ERROR_INVALID_PARAMETER);
- return NULL;
- }
- if (lpFileMappingAttributes)
- {
- SecurityDescriptor = lpFileMappingAttributes->lpSecurityDescriptor;
- }
- else
- {
- SecurityDescriptor = NULL;
- }
-
- if (dwMaximumSizeLow == 0 && dwMaximumSizeHigh == 0)
- {
- MaximumSizePointer = NULL;
- }
- else
- {
- MaximumSize.u.LowPart = dwMaximumSizeLow;
- MaximumSize.u.HighPart = dwMaximumSizeHigh;
- MaximumSizePointer = &MaximumSize;
- }
-
- if (lpName != NULL)
- {
- RtlInitUnicodeString(&UnicodeName,
- lpName);
- }
-
- InitializeObjectAttributes(&ObjectAttributes,
- (lpName ? &UnicodeName : NULL),
- 0,
- (lpName ? hBaseDir : NULL),
- SecurityDescriptor);
-
- Status = NtCreateSection(&SectionHandle,
- SECTION_ALL_ACCESS,
- &ObjectAttributes,
- MaximumSizePointer,
- flProtect & MASK_PAGE_FLAGS,
- flProtect & MASK_SEC_FLAGS,
- ((hFile != INVALID_HANDLE_VALUE) ? hFile : NULL));
- if (!NT_SUCCESS(Status))
- {
- SetLastErrorByStatus(Status);
- return NULL;
- }
- return SectionHandle;
-}
-
-
-/*
- * @implemented
- */
-LPVOID STDCALL
-MapViewOfFileEx(HANDLE hFileMappingObject,
- DWORD dwDesiredAccess,
- DWORD dwFileOffsetHigh,
- DWORD dwFileOffsetLow,
- DWORD dwNumberOfBytesToMap,
- LPVOID lpBaseAddress)
-{
- NTSTATUS Status;
- LARGE_INTEGER SectionOffset;
- ULONG ViewSize;
- ULONG Protect;
- LPVOID BaseAddress;
-
- SectionOffset.u.LowPart = dwFileOffsetLow;
- SectionOffset.u.HighPart = dwFileOffsetHigh;
-
- if ( ( dwDesiredAccess & FILE_MAP_WRITE) == FILE_MAP_WRITE)
- Protect = PAGE_READWRITE;
- else if ((dwDesiredAccess & FILE_MAP_READ) == FILE_MAP_READ)
- Protect = PAGE_READONLY;
- else if ((dwDesiredAccess & FILE_MAP_ALL_ACCESS) == FILE_MAP_ALL_ACCESS)
- Protect = PAGE_READWRITE;
- else if ((dwDesiredAccess & FILE_MAP_COPY) == FILE_MAP_COPY)
- Protect = PAGE_WRITECOPY;
- else
- Protect = PAGE_READWRITE;
-
- if (lpBaseAddress == NULL)
- {
- BaseAddress = NULL;
- }
- else
- {
- BaseAddress = lpBaseAddress;
- }
-
- ViewSize = (ULONG) dwNumberOfBytesToMap;
-
- Status = ZwMapViewOfSection(hFileMappingObject,
- NtCurrentProcess(),
- &BaseAddress,
- 0,
- dwNumberOfBytesToMap,
- &SectionOffset,
- &ViewSize,
- ViewShare,
- 0,
- Protect);
- if (!NT_SUCCESS(Status))
- {
- SetLastErrorByStatus(Status);
- return NULL;
- }
- return BaseAddress;
-}
-
-
-/*
- * @implemented
- */
-LPVOID STDCALL
-MapViewOfFile(HANDLE hFileMappingObject,
- DWORD dwDesiredAccess,
- DWORD dwFileOffsetHigh,
- DWORD dwFileOffsetLow,
- DWORD dwNumberOfBytesToMap)
-{
- return MapViewOfFileEx(hFileMappingObject,
- dwDesiredAccess,
- dwFileOffsetHigh,
- dwFileOffsetLow,
- dwNumberOfBytesToMap,
- NULL);
-}
-
-
-/*
- * @implemented
- */
-BOOL STDCALL
-UnmapViewOfFile(LPVOID lpBaseAddress)
-{
- NTSTATUS Status;
-
- Status = NtUnmapViewOfSection(NtCurrentProcess(),
- lpBaseAddress);
- if (!NT_SUCCESS(Status))
- {
- SetLastErrorByStatus(Status);
- return FALSE;
- }
- return TRUE;
-}
-
-
-/*
- * @implemented
- */
-HANDLE STDCALL
-OpenFileMappingA(DWORD dwDesiredAccess,
- BOOL bInheritHandle,
- LPCSTR lpName)
-{
- NTSTATUS Status;
- HANDLE SectionHandle;
- OBJECT_ATTRIBUTES ObjectAttributes;
- ANSI_STRING AnsiName;
- UNICODE_STRING UnicodeName;
-
- if (lpName == NULL)
- {
- SetLastError(ERROR_INVALID_PARAMETER);
- return NULL;
- }
-
- RtlInitAnsiString(&AnsiName,
- (LPSTR)lpName);
- RtlAnsiStringToUnicodeString(&UnicodeName,
- &AnsiName,
- TRUE);
-
- InitializeObjectAttributes(&ObjectAttributes,
- &UnicodeName,
- (bInheritHandle ? OBJ_INHERIT : 0),
- hBaseDir,
- NULL);
- Status = NtOpenSection(&SectionHandle,
- SECTION_ALL_ACCESS,
- &ObjectAttributes);
- RtlFreeUnicodeString (&UnicodeName);
- if (!NT_SUCCESS(Status))
- {
- SetLastErrorByStatus (Status);
- return NULL;
- }
-
- return SectionHandle;
-}
-
-
-/*
- * @implemented
- */
-HANDLE STDCALL
-OpenFileMappingW(DWORD dwDesiredAccess,
- BOOL bInheritHandle,
- LPCWSTR lpName)
-{
- NTSTATUS Status;
- HANDLE SectionHandle;
- OBJECT_ATTRIBUTES ObjectAttributes;
- UNICODE_STRING UnicodeName;
-
- if (lpName == NULL)
- {
- SetLastError(ERROR_INVALID_PARAMETER);
- return NULL;
- }
-
- RtlInitUnicodeString(&UnicodeName,
- lpName);
- InitializeObjectAttributes(&ObjectAttributes,
- &UnicodeName,
- (bInheritHandle ? OBJ_INHERIT : 0),
- hBaseDir,
- NULL);
- Status = ZwOpenSection(&SectionHandle,
- SECTION_ALL_ACCESS,
- &ObjectAttributes);
- if (!NT_SUCCESS(Status))
- {
- SetLastErrorByStatus(Status);
- return NULL;
- }
-
- return SectionHandle;
-}
-
-
-/*
- * @implemented
- */
-BOOL STDCALL
-FlushViewOfFile(LPCVOID lpBaseAddress,
- DWORD dwNumberOfBytesToFlush)
-{
- NTSTATUS Status;
- ULONG NumberOfBytesFlushed;
-
- Status = NtFlushVirtualMemory(NtCurrentProcess(),
- (LPVOID)lpBaseAddress,
- dwNumberOfBytesToFlush,
- &NumberOfBytesFlushed);
- if (!NT_SUCCESS(Status))
- {
- SetLastErrorByStatus(Status);
- return FALSE;
- }
- return TRUE;
-}
-
-/* EOF */
projects / reactos.git / blobdiff