LCOM1920-T02G10

/*        $NetBSD: poll.h,v 1.15 2009/11/11 09:48:51 rmind Exp $        */

/*-

 * Copyright (c) 1998 The NetBSD Foundation, Inc.

 * All rights reserved.

 *

 * This code is derived from software contributed to The NetBSD Foundation

 * by Charles M. Hannum.

 *

 * Redistribution and use in source and binary forms, with or without

 * modification, are permitted provided that the following conditions

 * are met:

 * 1. Redistributions of source code must retain the above copyright

 *    notice, this list of conditions and the following disclaimer.

 * 2. Redistributions in binary form must reproduce the above copyright

 *    notice, this list of conditions and the following disclaimer in the

 *    documentation and/or other materials provided with the distribution.

 *

 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS

 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED

 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR

 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS

 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR

 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF

 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS

 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN

 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)

 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE

 * POSSIBILITY OF SUCH DAMAGE.

 */

#ifndef _SYS_POLL_H_

#define        _SYS_POLL_H_

#include <sys/featuretest.h>

typedef unsigned int        nfds_t;

struct pollfd {

        int        fd;                /* file descriptor */

        short        events;                /* events to look for */

        short        revents;        /* events returned */

};

/*

 * Testable events (may be specified in events field).

 */

#define        POLLIN                0x0001

#define        POLLPRI                0x0002

#define        POLLOUT                0x0004

#define        POLLRDNORM        0x0040

#define        POLLWRNORM        POLLOUT

#define        POLLRDBAND        0x0080

#define        POLLWRBAND        0x0100

/*

 * Non-testable events (may not be specified in events field).

 */

#define        POLLERR                0x0008

#define        POLLHUP                0x0010

#define        POLLNVAL        0x0020

#if defined(_NETBSD_SOURCE)

/*

 * Infinite timeout value.

 */

#define        INFTIM                -1

#endif

#ifdef _KERNEL

#include <sys/signal.h>                /* for sigset_t */

struct lwp;

struct timespec;

int        pollcommon(register_t *, struct pollfd *, u_int,

    struct timespec *, sigset_t *);

#else

#include <sys/cdefs.h>

__BEGIN_DECLS

int        poll(struct pollfd *, nfds_t, int);

__END_DECLS

#ifdef _NETBSD_SOURCE

#include <sys/sigtypes.h>        /* for sigset_t */

struct timespec;

__BEGIN_DECLS

#ifndef __LIBC12_SOURCE__

int        pollts(struct pollfd * __restrict, nfds_t,

    const struct timespec * __restrict, const sigset_t * __restrict)

    __RENAME(__pollts50);

#endif /* __LIBC12_SOURCE__ */

__END_DECLS

#endif /* _NETBSD_SOURCE */

#endif /* _KERNEL */

#endif /* !_SYS_POLL_H_ */