75 lines
2.4 KiB
C
75 lines
2.4 KiB
C
/* $NetBSD: poll.h,v 1.2 1996/09/07 21:44:59 mycroft Exp $ */
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/*
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* Copyright (c) 1996 Charles M. Hannum. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles M. Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SYS_POLL_H_
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#define _SYS_POLL_H_
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struct pollfd {
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int fd; /* file descriptor */
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short events; /* events to look for */
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short revents; /* events returned */
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};
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/*
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* Testable events (may be specified in events field).
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*/
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#define POLLIN 0x0001
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#define POLLPRI 0x0002
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#define POLLOUT 0x0004
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#define POLLRDNORM 0x0040
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#define POLLWRNORM POLLOUT
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#define POLLRDBAND 0x0080
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#define POLLWRBAND 0x0100
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/*
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* Non-testable events (may not be specified in events field).
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*/
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#define POLLERR 0x0008
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#define POLLHUP 0x0010
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#define POLLNVAL 0x0020
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/*
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* Infinite timeout value.
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*/
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#define INFTIM -1
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#ifndef _KERNEL
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int poll __P((struct pollfd *, u_int, int));
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__END_DECLS
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#endif /* _KERNEL */
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#endif /* !_SYS_POLL_H_ */
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