101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* $NetBSD: poll.h,v 1.15 2009/11/11 09:48:51 rmind Exp $ */
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/*-
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* Copyright (c) 1998 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Charles M. Hannum.
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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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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* 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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#include <sys/featuretest.h>
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typedef unsigned int nfds_t;
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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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#if defined(_NETBSD_SOURCE)
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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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#endif
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#ifdef _KERNEL
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#include <sys/signal.h> /* for sigset_t */
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struct lwp;
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struct timespec;
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int pollcommon(register_t *, struct pollfd *, u_int,
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struct timespec *, sigset_t *);
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#else
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#include <sys/cdefs.h>
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__BEGIN_DECLS
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int poll(struct pollfd *, nfds_t, int);
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__END_DECLS
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#ifdef _NETBSD_SOURCE
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#include <sys/sigtypes.h> /* for sigset_t */
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struct timespec;
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__BEGIN_DECLS
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#ifndef __LIBC12_SOURCE__
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int pollts(struct pollfd * __restrict, nfds_t,
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const struct timespec * __restrict, const sigset_t * __restrict)
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__RENAME(__pollts50);
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#endif /* __LIBC12_SOURCE__ */
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__END_DECLS
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#endif /* _NETBSD_SOURCE */
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#endif /* _KERNEL */
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#endif /* !_SYS_POLL_H_ */
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