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/*++ BUILD Version: 0001 // Increment this if a change has global effects
Copyright (c) 1991-1999 Microsoft Corporation
Module Name:
ntddstrm.h
Abstract:
This header file defines constants and types for accessing the NT STREAMS environment.
Include the STREAMS header file, <sys/stropts.h>, before this !!
Author:
Eric Chin (ericc) July 2, 1991
Revision History:
--*/
#ifndef _NTDDSTRM_
#define _NTDDSTRM_
#if _MSC_VER > 1000
#pragma once
#endif
#ifdef __cplusplus
extern "C" {#endif
//
// Device Name - this string is the name of the device. It is the name
// that should be passed to NtOpenFile when accessing the device.
//
#define DD_STREAMS_DEVICE_NAME "\\Device\\Streams"
//
// EA to be used when opening a STREAMS driver for putmsg()/getmsg().
//
#define NormalStreamEA "NormalStream"
#define NORMAL_STREAM_EA_LENGTH (sizeof(NormalStreamEA) - 1)
//
// NtDeviceIoControlFile IoControlCode values for this device.
//
#define _STRM_CTRL_CODE(function, method, access) \
CTL_CODE(FILE_DEVICE_STREAMS, function, method, access)
#define IOCTL_STREAMS_GETMSG _STRM_CTRL_CODE( 0, METHOD_BUFFERED, \
FILE_READ_ACCESS)
#define IOCTL_STREAMS_IOCTL _STRM_CTRL_CODE( 1, METHOD_BUFFERED, \
FILE_ANY_ACCESS)
#define IOCTL_STREAMS_POLL _STRM_CTRL_CODE( 2, METHOD_BUFFERED, \
FILE_ANY_ACCESS)
#define IOCTL_STREAMS_PUTMSG _STRM_CTRL_CODE( 3, METHOD_BUFFERED, \
FILE_WRITE_ACCESS)
#define IOCTL_STREAMS_TDI_TEST _STRM_CTRL_CODE(32, METHOD_BUFFERED, \
FILE_ANY_ACCESS)
struct queue; // forward declaration for ANSI C
/*
* General buffer structure (putmsg, getmsg, etc) */
struct strbuf { int maxlen; /* no. of bytes in buffer */ int len; /* no. of bytes returned */ char *buf; /* pointer to data */};
/*
* General ioctl */
struct strioctl { int ic_cmd; /* command */ int ic_timout; /* timeout value */ int ic_len; /* length of data */ char *ic_dp; /* pointer to data */};
//
// NtDeviceIoControlFile InputBuffer/OutputBuffer Record Structures
//
//
typedef struct _GETMSG_ARGS_INOUT_ { // getmsg()
int a_retval; // return value
long a_flags; // 0 or RS_HIPRI
struct strbuf a_ctlbuf; // (required)
struct strbuf a_databuf; // (required)
char a_stuff[1]; // a_ctlbuf.buf (optional)
// a_databuf.buf (optional)
} GETMSG_ARGS_INOUT, *PGETMSG_ARGS_INOUT;
typedef struct _ISTR_ARGS_INOUT { // ioctl(I_STR)
int a_iocode; // I_STR, retval on return
struct strioctl a_strio; // (required)
int a_unused[2]; // (required)
char a_stuff[1]; // (optional)
} ISTR_ARGS_INOUT, *PISTR_ARGS_INOUT;
typedef struct _PUTMSG_ARGS_IN_ { // ioctl(I_FDINSERT) and putmsg()
int a_iocode; // I_FDINSERT or 0
long a_flags; // 0 or RS_HIPRI
struct strbuf a_ctlbuf; // (required)
struct strbuf a_databuf; // (required)
union { // used only for I_FDINSERT
HANDLE i_fildes; // (optional)
struct queue * i_targetq; // for Stream Head Driver use
} a_insert;
int a_offset; // (optional)
char a_stuff[1]; // a_ctlbuf.buf (optional)
// a_databuf.buf (optional)
} PUTMSG_ARGS_IN, *PPUTMSG_ARGS_IN;
typedef struct _STRM_ARGS_OUT_ { // generic return parameters
int a_retval; // return value
int a_errno; // errno if retval == -1
} STRM_ARGS_OUT, *PSTRM_ARGS_OUT;
#ifdef __cplusplus
}#endif
#endif // ifndef _NTDDSTRM_
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