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116 lines
2.4 KiB
116 lines
2.4 KiB
/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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w64misc.c
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Abstract:
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Miscallaneous Wow64 routines.
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Author:
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Samer Arafeh (samera) 12-Dec-2002
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Revision History:
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--*/
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#include "ldrp.h"
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#include <ntos.h>
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <wow64t.h>
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NTSTATUS
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RtlpWow64EnableFsRedirection (
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IN BOOLEAN Wow64FsEnableRedirection
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)
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/*++
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Routine Description:
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This function enables/disables Wow64 file system redirection.
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Wow64 redirects all accesses to %windir%\system32 to %windir%\syswow64.
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This API is useful for 32-bit applications which want to gain access to the
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native system32 directory. By default, Wow64 file system redirection is enabled.
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File redirection is only affected for the thread calling this API.
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Note : You must enable file system redirection after disabling it. Once you have
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a file handle, you must enable file system redirection back.
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Example:
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NTSTATUS Status = RtlpWow64EnableFsRedirection (FALSE);
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if (NT_SUCCESS (Status)) {
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//
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// Open the file handle
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//
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CreateFile (..."c:\\windows\\system32\\notepad.exe"...)
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//
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// Enable Wow64 file system redirection.
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//
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RtlpWow64EnableFsRedirection (TRUE);
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}
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//
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// Use the file handle
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//
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Arguments:
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Wow64FsEnableRedirection - Boolean to indicate whether to enable Wow64 file system
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redirection. Specify FALSE if you want to disable Wow64 file system redirection,
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otherwise TRUE to enable it.
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Return Value:
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NTSTATUS.
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--*/
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{
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#if !defined(BUILD_WOW6432)
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UNREFERENCED_PARAMETER (Wow64FsEnableRedirection);
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//
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// If this is not a wow64 process, then this is api is not supported.
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//
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return STATUS_NOT_IMPLEMENTED;
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#else
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NTSTATUS NtStatus;
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NtStatus = STATUS_SUCCESS;
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try {
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if (Wow64FsEnableRedirection == FALSE) {
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Wow64SetFilesystemRedirectorEx (WOW64_FILE_SYSTEM_DISABLE_REDIRECT);
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} else {
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Wow64SetFilesystemRedirectorEx (WOW64_FILE_SYSTEM_ENABLE_REDIRECT);
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}
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} except (EXCEPTION_EXECUTE_HANDLER) {
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NtStatus = GetExceptionCode ();
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}
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return NtStatus;
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#endif
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}
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