/* $NetBSD: poll.h,v 1.17 2024/11/01 16:37:42 nia 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 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 /* for sigset_t */ struct lwp; struct timespec; int pollcommon(register_t *, struct pollfd *, u_int, struct timespec *, sigset_t *); #else #include __BEGIN_DECLS int poll(struct pollfd *, nfds_t, int); __END_DECLS /* * IEEE Std 1003.1-2024 (POSIX.1-2024) */ #if (_POSIX_C_SOURCE - 0) >= 202405L || (_XOPEN_SOURCE - 0 >= 800) || \ defined(_NETBSD_SOURCE) #include /* for sigset_t */ struct timespec; __BEGIN_DECLS #ifndef __LIBC12_SOURCE__ #ifdef _NETBSD_SOURCE int pollts(struct pollfd * __restrict, nfds_t, const struct timespec * __restrict, const sigset_t * __restrict) __RENAME(__pollts50); #endif int ppoll(struct pollfd * __restrict, nfds_t, const struct timespec * __restrict, const sigset_t * __restrict); #endif /* __LIBC12_SOURCE__ */ __END_DECLS #endif /* _NETBSD_SOURCE */ #endif /* _KERNEL */ #endif /* !_SYS_POLL_H_ */