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