mirror of https://github.com/tongzx/nt5src
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
161 lines
3.4 KiB
161 lines
3.4 KiB
/*++
|
|
|
|
Copyright (c) 1995 Microsoft Corporation
|
|
|
|
Module Name:
|
|
|
|
ntos\tdi\isn\flt\fwdbind.c
|
|
|
|
Abstract:
|
|
IPX Filter driver binding with forwarder routines
|
|
|
|
|
|
Author:
|
|
|
|
Vadim Eydelman
|
|
|
|
Revision History:
|
|
|
|
--*/
|
|
|
|
#include "precomp.h"
|
|
|
|
// Buffer to keep forwarder entry points
|
|
IPX_FLT_BIND_OUTPUT FltBindOutput;
|
|
// global handle of the FWD driver
|
|
HANDLE HdlFwdFile = NULL;
|
|
|
|
|
|
/*++
|
|
B i n d T o F w d D r i v e r
|
|
|
|
Routine Description:
|
|
|
|
Opens forwarder driver and exchages entry points
|
|
Arguments:
|
|
None
|
|
Return Value:
|
|
STATUS_SUCCESS if successful,
|
|
STATUS_UNSUCCESSFUL otherwise
|
|
|
|
--*/
|
|
NTSTATUS
|
|
BindToFwdDriver (
|
|
KPROCESSOR_MODE requestorMode
|
|
) {
|
|
NTSTATUS status;
|
|
IO_STATUS_BLOCK IoStatusBlock;
|
|
OBJECT_ATTRIBUTES ObjectAttributes;
|
|
UNICODE_STRING UstrFwdFileName;
|
|
IPX_FLT_BIND_INPUT FltBindInput = {Filter, InterfaceDeleted};
|
|
|
|
ASSERT (HdlFwdFile == NULL);
|
|
|
|
RtlInitUnicodeString (&UstrFwdFileName, IPXFWD_NAME);
|
|
InitializeObjectAttributes(
|
|
&ObjectAttributes,
|
|
&UstrFwdFileName,
|
|
OBJ_CASE_INSENSITIVE,
|
|
NULL,
|
|
NULL
|
|
);
|
|
|
|
if (requestorMode==UserMode)
|
|
status = ZwCreateFile(&HdlFwdFile,
|
|
SYNCHRONIZE | GENERIC_READ,
|
|
&ObjectAttributes,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
FILE_ATTRIBUTE_NORMAL,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
FILE_OPEN,
|
|
FILE_SYNCHRONOUS_IO_NONALERT,
|
|
NULL,
|
|
0L);
|
|
else
|
|
status = NtCreateFile(&HdlFwdFile,
|
|
SYNCHRONIZE | GENERIC_READ,
|
|
&ObjectAttributes,
|
|
&IoStatusBlock,
|
|
NULL,
|
|
FILE_ATTRIBUTE_NORMAL,
|
|
FILE_SHARE_READ | FILE_SHARE_WRITE,
|
|
FILE_OPEN,
|
|
FILE_SYNCHRONOUS_IO_NONALERT,
|
|
NULL,
|
|
0L);
|
|
|
|
if (NT_SUCCESS(status)) {
|
|
|
|
if (requestorMode==UserMode)
|
|
status = ZwDeviceIoControlFile(
|
|
HdlFwdFile, // HANDLE to File
|
|
NULL, // HANDLE to Event
|
|
NULL, // ApcRoutine
|
|
NULL, // ApcContext
|
|
&IoStatusBlock, // IO_STATUS_BLOCK
|
|
IOCTL_FWD_INTERNAL_BIND_FILTER, // IoControlCode
|
|
&FltBindInput, // Input Buffer
|
|
sizeof(FltBindInput), // Input Buffer Length
|
|
&FltBindOutput, // Output Buffer
|
|
sizeof(FltBindOutput));// Output Buffer Length
|
|
else
|
|
status = NtDeviceIoControlFile(
|
|
HdlFwdFile, // HANDLE to File
|
|
NULL, // HANDLE to Event
|
|
NULL, // ApcRoutine
|
|
NULL, // ApcContext
|
|
&IoStatusBlock, // IO_STATUS_BLOCK
|
|
IOCTL_FWD_INTERNAL_BIND_FILTER, // IoControlCode
|
|
&FltBindInput, // Input Buffer
|
|
sizeof(FltBindInput), // Input Buffer Length
|
|
&FltBindOutput, // Output Buffer
|
|
sizeof(FltBindOutput));// Output Buffer Length
|
|
if (NT_SUCCESS (status))
|
|
return STATUS_SUCCESS;
|
|
else
|
|
IpxFltDbgPrint (DBG_ERRORS,
|
|
("IpxFlt: Failed to bind to forwarder %08lx.\n", status));
|
|
if (requestorMode==KernelMode)
|
|
ZwClose (HdlFwdFile);
|
|
else
|
|
NtClose (HdlFwdFile);
|
|
|
|
}
|
|
else
|
|
IpxFltDbgPrint (DBG_ERRORS,
|
|
("IpxFlt: Failed create forwarder file %08lx.\n", status));
|
|
HdlFwdFile = NULL;
|
|
return status;
|
|
}
|
|
|
|
|
|
|
|
/*++
|
|
U n i n d T o F w d D r i v e r
|
|
|
|
Routine Description:
|
|
|
|
Closes forwarder driver
|
|
Arguments:
|
|
None
|
|
Return Value:
|
|
None
|
|
|
|
--*/
|
|
VOID
|
|
UnbindFromFwdDriver (
|
|
KPROCESSOR_MODE requestorMode
|
|
) {
|
|
NTSTATUS status;
|
|
|
|
ASSERT (HdlFwdFile != NULL);
|
|
|
|
if (requestorMode==UserMode)
|
|
status = ZwClose (HdlFwdFile);
|
|
else
|
|
status = NtClose (HdlFwdFile);
|
|
ASSERT (NT_SUCCESS (status));
|
|
HdlFwdFile = NULL;
|
|
}
|
|
|