/* * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. * * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ * * This file contains Original Code and/or Modifications of Original Code * as defined in and that are subject to the Apple Public Source License * Version 2.0 (the 'License'). You may not use this file except in * compliance with the License. The rights granted to you under the License * may not be used to create, or enable the creation or redistribution of, * unlawful or unlicensed copies of an Apple operating system, or to * circumvent, violate, or enable the circumvention or violation of, any * terms of an Apple operating system software license agreement. * * Please obtain a copy of the License at * http://www.opensource.apple.com/apsl/ and read it before using this file. * * The Original Code and all software distributed under the License are * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. * Please see the License for the specific language governing rights and * limitations under the License. * * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ */ /*- * Copyright (c) 1997 Peter Wemm <peter@freebsd.org> * All rights reserved. * * 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. * 3. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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_ /* * This file is intended to be compatible with the traditional poll.h. */ /* * Requestable events. If poll(2) finds any of these set, they are * copied to revents on return. */ #define POLLIN 0x0001 /* any readable data available */ #define POLLPRI 0x0002 /* OOB/Urgent readable data */ #define POLLOUT 0x0004 /* file descriptor is writeable */ #define POLLRDNORM 0x0040 /* non-OOB/URG data available */ #define POLLWRNORM POLLOUT /* no write type differentiation */ #define POLLRDBAND 0x0080 /* OOB/Urgent readable data */ #define POLLWRBAND 0x0100 /* OOB/Urgent data can be written */ /* * FreeBSD extensions: polling on a regular file might return one * of these events (currently only supported on local filesystems). */ #define POLLEXTEND 0x0200 /* file may have been extended */ #define POLLATTRIB 0x0400 /* file attributes may have changed */ #define POLLNLINK 0x0800 /* (un)link/rename may have happened */ #define POLLWRITE 0x1000 /* file's contents may have changed */ /* * These events are set if they occur regardless of whether they were * requested. */ #define POLLERR 0x0008 /* some poll error occurred */ #define POLLHUP 0x0010 /* file descriptor was "hung up" */ #define POLLNVAL 0x0020 /* requested events "invalid" */ #define POLLSTANDARD (POLLIN|POLLPRI|POLLOUT|POLLRDNORM|POLLRDBAND|\ POLLWRBAND|POLLERR|POLLHUP|POLLNVAL) struct pollfd { int fd; short events; short revents; }; typedef unsigned int nfds_t; #if !defined(KERNEL) #include <sys/cdefs.h> __BEGIN_DECLS /* * This is defined here (instead of <poll.h>) because this is where * traditional SVR4 code will look to find it. */ extern int poll(struct pollfd *, nfds_t, int) __DARWIN_ALIAS_C(poll); __END_DECLS #endif /* !KERNEL */ #endif /* !_SYS_POLL_H_ */