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att
GitHub Repository: att/ast
 Path: blob/master/src/cmd/3d/features/peek.c
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/***********************************************************************

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*                                                                      *

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*               This software is part of the ast package               *

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*          Copyright (c) 1989-2011 AT&T Intellectual Property          *

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*                      and is licensed under the                       *

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*                 Eclipse Public License, Version 1.0                  *

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*                    by AT&T Intellectual Property                     *

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*                                                                      *

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*                A copy of the License is available at                 *

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*          http://www.eclipse.org/org/documents/epl-v10.html           *

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*         (with md5 checksum b35adb5213ca9657e911e9befb180842)         *

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*                                                                      *

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*              Information and Software Systems Research               *

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*                            AT&T Research                             *

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*                           Florham Park NJ                            *

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*                                                                      *

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*                 Glenn Fowler <[email protected]>                  *

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*                  David Korn <[email protected]>                   *

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*                   Eduardo Krell <[email protected]>                   *

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*                                                                      *

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***********************************************************************/

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#pragma prototyped

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#include <sys/types.h>

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#if _stream_peek

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#include <ast_tty.h>

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#include <stropts.h>

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#endif

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#if _socket_peek

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#include <sys/socket.h>

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#endif

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int

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main()

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{

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	int		fds[2];

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	static char	msg[] = "test";

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#if _stream_peek

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	struct strpeek	pk;

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#endif

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	if (pipe(fds) || write(fds[1], msg, sizeof(msg)) != sizeof(msg))

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		return(0);

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#if _stream_peek

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	pk.flags = 0;

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	pk.ctlbuf.maxlen = -1;

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	pk.ctlbuf.len = 0;

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	pk.ctlbuf.buf = 0;

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	pk.databuf.maxlen = sizeof(msg);

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	pk.databuf.buf = msg;

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	pk.databuf.len = 0;

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	if (ioctl(fds[0], I_PEEK, &pk) > 0 && pk.databuf.len == sizeof(msg))

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	{

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		printf("#undef	_socket_peek\n");

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		return(0);

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	}

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#endif

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#if _socket_peek

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	if (recv(fds[0], msg, sizeof(msg), MSG_PEEK) == sizeof(msg))

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	{

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		printf("#undef	_stream_peek\n");

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		return(0);

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	}

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#endif

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	return(0);

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}

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