197952Sdougb/*- 297952Sdougb * Copyright (c) 1997 Peter Wemm <peter@freebsd.org> 397952Sdougb * All rights reserved. 497952Sdougb * 597952Sdougb * Redistribution and use in source and binary forms, with or without 697952Sdougb * modification, are permitted provided that the following conditions 797952Sdougb * are met: 897952Sdougb * 1. Redistributions of source code must retain the above copyright 997952Sdougb * notice, this list of conditions and the following disclaimer. 1097952Sdougb * 2. Redistributions in binary form must reproduce the above copyright 1197952Sdougb * notice, this list of conditions and the following disclaimer in the 1297952Sdougb * documentation and/or other materials provided with the distribution. 1397952Sdougb * 3. The name of the author may not be used to endorse or promote products 1497952Sdougb * derived from this software without specific prior written permission. 1597952Sdougb * 1697952Sdougb * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 1797952Sdougb * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 1897952Sdougb * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 1997952Sdougb * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 2097952Sdougb * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 2197952Sdougb * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 2297952Sdougb * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 2397952Sdougb * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 2497952Sdougb * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 2597952Sdougb * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 2697952Sdougb * SUCH DAMAGE. 2797952Sdougb * 2897952Sdougb * $FreeBSD: releng/10.3/sys/sys/poll.h 275986 2014-12-21 07:58:28Z dchagin $ 2997952Sdougb */ 3097952Sdougb 3197952Sdougb#ifndef _SYS_POLL_H_ 3297952Sdougb#define _SYS_POLL_H_ 3397952Sdougb 3497952Sdougb#include <sys/cdefs.h> 3597952Sdougb 3697952Sdougb/* 37114924Sdougb * This file is intended to be compatible with the traditional poll.h. 38101773Sdougb */ 3997952Sdougb 40120836Sdougbtypedef unsigned int nfds_t; 4197952Sdougb 42101773Sdougb/* 4397952Sdougb * This structure is passed as an array to poll(2). 44101773Sdougb */ 45101773Sdougbstruct pollfd { 46120836Sdougb int fd; /* which file descriptor to poll */ 47120836Sdougb short events; /* events we are interested in */ 48120836Sdougb short revents; /* events found on return */ 49120836Sdougb}; 50120836Sdougb 51120836Sdougb/* 52120836Sdougb * Requestable events. If poll(2) finds any of these set, they are 53120836Sdougb * copied to revents on return. 54120836Sdougb * XXX Note that FreeBSD doesn't make much distinction between POLLPRI 55120836Sdougb * and POLLRDBAND since none of the file types have distinct priority 56101897Sdougb * bands - and only some have an urgent "mode". 5797952Sdougb * XXX Note POLLIN isn't really supported in true SVSV terms. Under SYSV 58101773Sdougb * POLLIN includes all of normal, band and urgent data. Most poll handlers 59101773Sdougb * on FreeBSD only treat it as "normal" data. 6097952Sdougb */ 61101773Sdougb#define POLLIN 0x0001 /* any readable data available */ 62101897Sdougb#define POLLPRI 0x0002 /* OOB/Urgent readable data */ 63101773Sdougb#define POLLOUT 0x0004 /* file descriptor is writeable */ 6497952Sdougb#define POLLRDNORM 0x0040 /* non-OOB/URG data available */ 6597952Sdougb#define POLLWRNORM POLLOUT /* no write type differentiation */ 66101773Sdougb#define POLLRDBAND 0x0080 /* OOB/Urgent readable data */ 67101773Sdougb#define POLLWRBAND 0x0100 /* OOB/Urgent data can be written */ 68101773Sdougb 6997952Sdougb#if __BSD_VISIBLE 70120836Sdougb/* General FreeBSD extension (currently only supported for sockets): */ 71120836Sdougb#define POLLINIGNEOF 0x2000 /* like POLLIN, except ignore EOF */ 72120836Sdougb#endif 73120836Sdougb 74120836Sdougb/* 75120836Sdougb * These events are set if they occur regardless of whether they were 76120836Sdougb * requested. 77120836Sdougb */ 78120836Sdougb#define POLLERR 0x0008 /* some poll error occurred */ 79120836Sdougb#define POLLHUP 0x0010 /* file descriptor was "hung up" */ 80120836Sdougb#define POLLNVAL 0x0020 /* requested events "invalid" */ 81120836Sdougb 82120836Sdougb#if __BSD_VISIBLE 83120836Sdougb 84120836Sdougb#define POLLSTANDARD (POLLIN|POLLPRI|POLLOUT|POLLRDNORM|POLLRDBAND|\ 85120836Sdougb POLLWRBAND|POLLERR|POLLHUP|POLLNVAL) 86120836Sdougb 87120836Sdougb/* 88120836Sdougb * Request that poll() wait forever. 89120836Sdougb * XXX in SYSV, this is defined in stropts.h, which is not included 90120836Sdougb * by poll.h. 91120836Sdougb */ 92120836Sdougb#define INFTIM (-1) 93120836Sdougb 94120836Sdougb#endif 95120836Sdougb 9697952Sdougb#ifndef _KERNEL 97120836Sdougb 98120836Sdougb#if __BSD_VISIBLE 99120836Sdougb#include <sys/_types.h> 100120836Sdougb 10197952Sdougb#include <sys/_sigset.h> 10297952Sdougb#include <sys/timespec.h> 10397952Sdougb 10497952Sdougb#ifndef _SIGSET_T_DECLARED 10597952Sdougb#define _SIGSET_T_DECLARED 106120836Sdougbtypedef __sigset_t sigset_t; 107120836Sdougb#endif 10897952Sdougb 10997952Sdougb#endif 11097952Sdougb 111188481Smaxim__BEGIN_DECLS 11297952Sdougbint poll(struct pollfd _pfd[], nfds_t _nfds, int _timeout); 11397952Sdougb#if __BSD_VISIBLE 11497952Sdougbint ppoll(struct pollfd _pfd[], nfds_t _nfds, 11597952Sdougb const struct timespec *__restrict _timeout, 11697952Sdougb const sigset_t *__restrict _newsigmask); 11797952Sdougb#endif 11897952Sdougb__END_DECLS 11997952Sdougb 12097952Sdougb#endif /* !_KERNEL */ 12197952Sdougb 12297952Sdougb#endif /* !_SYS_POLL_H_ */ 12397952Sdougb