1*43a90889SApple OSS Distributions /* 2*43a90889SApple OSS Distributions * Copyright (c) 2000-2004 Apple Computer, Inc. All rights reserved. 3*43a90889SApple OSS Distributions * 4*43a90889SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ 5*43a90889SApple OSS Distributions * 6*43a90889SApple OSS Distributions * This file contains Original Code and/or Modifications of Original Code 7*43a90889SApple OSS Distributions * as defined in and that are subject to the Apple Public Source License 8*43a90889SApple OSS Distributions * Version 2.0 (the 'License'). You may not use this file except in 9*43a90889SApple OSS Distributions * compliance with the License. The rights granted to you under the License 10*43a90889SApple OSS Distributions * may not be used to create, or enable the creation or redistribution of, 11*43a90889SApple OSS Distributions * unlawful or unlicensed copies of an Apple operating system, or to 12*43a90889SApple OSS Distributions * circumvent, violate, or enable the circumvention or violation of, any 13*43a90889SApple OSS Distributions * terms of an Apple operating system software license agreement. 14*43a90889SApple OSS Distributions * 15*43a90889SApple OSS Distributions * Please obtain a copy of the License at 16*43a90889SApple OSS Distributions * http://www.opensource.apple.com/apsl/ and read it before using this file. 17*43a90889SApple OSS Distributions * 18*43a90889SApple OSS Distributions * The Original Code and all software distributed under the License are 19*43a90889SApple OSS Distributions * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER 20*43a90889SApple OSS Distributions * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, 21*43a90889SApple OSS Distributions * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, 22*43a90889SApple OSS Distributions * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. 23*43a90889SApple OSS Distributions * Please see the License for the specific language governing rights and 24*43a90889SApple OSS Distributions * limitations under the License. 25*43a90889SApple OSS Distributions * 26*43a90889SApple OSS Distributions * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ 27*43a90889SApple OSS Distributions */ 28*43a90889SApple OSS Distributions /*- 29*43a90889SApple OSS Distributions * Copyright (c) 1997 Peter Wemm <[email protected]> 30*43a90889SApple OSS Distributions * All rights reserved. 31*43a90889SApple OSS Distributions * 32*43a90889SApple OSS Distributions * Redistribution and use in source and binary forms, with or without 33*43a90889SApple OSS Distributions * modification, are permitted provided that the following conditions 34*43a90889SApple OSS Distributions * are met: 35*43a90889SApple OSS Distributions * 1. Redistributions of source code must retain the above copyright 36*43a90889SApple OSS Distributions * notice, this list of conditions and the following disclaimer. 37*43a90889SApple OSS Distributions * 2. Redistributions in binary form must reproduce the above copyright 38*43a90889SApple OSS Distributions * notice, this list of conditions and the following disclaimer in the 39*43a90889SApple OSS Distributions * documentation and/or other materials provided with the distribution. 40*43a90889SApple OSS Distributions * 3. The name of the author may not be used to endorse or promote products 41*43a90889SApple OSS Distributions * derived from this software without specific prior written permission. 42*43a90889SApple OSS Distributions * 43*43a90889SApple OSS Distributions * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 44*43a90889SApple OSS Distributions * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 45*43a90889SApple OSS Distributions * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 46*43a90889SApple OSS Distributions * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 47*43a90889SApple OSS Distributions * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 48*43a90889SApple OSS Distributions * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 49*43a90889SApple OSS Distributions * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 50*43a90889SApple OSS Distributions * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 51*43a90889SApple OSS Distributions * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 52*43a90889SApple OSS Distributions * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 53*43a90889SApple OSS Distributions * SUCH DAMAGE. 54*43a90889SApple OSS Distributions * 55*43a90889SApple OSS Distributions */ 56*43a90889SApple OSS Distributions 57*43a90889SApple OSS Distributions #ifndef _SYS_POLL_H_ 58*43a90889SApple OSS Distributions #define _SYS_POLL_H_ 59*43a90889SApple OSS Distributions 60*43a90889SApple OSS Distributions /* 61*43a90889SApple OSS Distributions * This file is intended to be compatible with the traditional poll.h. 62*43a90889SApple OSS Distributions */ 63*43a90889SApple OSS Distributions 64*43a90889SApple OSS Distributions /* 65*43a90889SApple OSS Distributions * Requestable events. If poll(2) finds any of these set, they are 66*43a90889SApple OSS Distributions * copied to revents on return. 67*43a90889SApple OSS Distributions */ 68*43a90889SApple OSS Distributions #define POLLIN 0x0001 /* any readable data available */ 69*43a90889SApple OSS Distributions #define POLLPRI 0x0002 /* OOB/Urgent readable data */ 70*43a90889SApple OSS Distributions #define POLLOUT 0x0004 /* file descriptor is writeable */ 71*43a90889SApple OSS Distributions #define POLLRDNORM 0x0040 /* non-OOB/URG data available */ 72*43a90889SApple OSS Distributions #define POLLWRNORM POLLOUT /* no write type differentiation */ 73*43a90889SApple OSS Distributions #define POLLRDBAND 0x0080 /* OOB/Urgent readable data */ 74*43a90889SApple OSS Distributions #define POLLWRBAND 0x0100 /* OOB/Urgent data can be written */ 75*43a90889SApple OSS Distributions 76*43a90889SApple OSS Distributions /* 77*43a90889SApple OSS Distributions * FreeBSD extensions: polling on a regular file might return one 78*43a90889SApple OSS Distributions * of these events (currently only supported on local filesystems). 79*43a90889SApple OSS Distributions */ 80*43a90889SApple OSS Distributions #define POLLEXTEND 0x0200 /* file may have been extended */ 81*43a90889SApple OSS Distributions #define POLLATTRIB 0x0400 /* file attributes may have changed */ 82*43a90889SApple OSS Distributions #define POLLNLINK 0x0800 /* (un)link/rename may have happened */ 83*43a90889SApple OSS Distributions #define POLLWRITE 0x1000 /* file's contents may have changed */ 84*43a90889SApple OSS Distributions 85*43a90889SApple OSS Distributions /* 86*43a90889SApple OSS Distributions * These events are set if they occur regardless of whether they were 87*43a90889SApple OSS Distributions * requested. 88*43a90889SApple OSS Distributions */ 89*43a90889SApple OSS Distributions #define POLLERR 0x0008 /* some poll error occurred */ 90*43a90889SApple OSS Distributions #define POLLHUP 0x0010 /* file descriptor was "hung up" */ 91*43a90889SApple OSS Distributions #define POLLNVAL 0x0020 /* requested events "invalid" */ 92*43a90889SApple OSS Distributions 93*43a90889SApple OSS Distributions #define POLLSTANDARD (POLLIN|POLLPRI|POLLOUT|POLLRDNORM|POLLRDBAND|\ 94*43a90889SApple OSS Distributions POLLWRBAND|POLLERR|POLLHUP|POLLNVAL) 95*43a90889SApple OSS Distributions 96*43a90889SApple OSS Distributions struct pollfd { 97*43a90889SApple OSS Distributions int fd; 98*43a90889SApple OSS Distributions short events; 99*43a90889SApple OSS Distributions short revents; 100*43a90889SApple OSS Distributions }; 101*43a90889SApple OSS Distributions 102*43a90889SApple OSS Distributions typedef unsigned int nfds_t; 103*43a90889SApple OSS Distributions 104*43a90889SApple OSS Distributions #if !defined(KERNEL) 105*43a90889SApple OSS Distributions 106*43a90889SApple OSS Distributions #include <sys/cdefs.h> 107*43a90889SApple OSS Distributions 108*43a90889SApple OSS Distributions __BEGIN_DECLS 109*43a90889SApple OSS Distributions 110*43a90889SApple OSS Distributions /* 111*43a90889SApple OSS Distributions * This is defined here (instead of <poll.h>) because this is where 112*43a90889SApple OSS Distributions * traditional SVR4 code will look to find it. 113*43a90889SApple OSS Distributions */ 114*43a90889SApple OSS Distributions extern int poll(struct pollfd *, nfds_t, int) __DARWIN_ALIAS_C(poll); 115*43a90889SApple OSS Distributions 116*43a90889SApple OSS Distributions __END_DECLS 117*43a90889SApple OSS Distributions 118*43a90889SApple OSS Distributions #endif /* !KERNEL */ 119*43a90889SApple OSS Distributions 120*43a90889SApple OSS Distributions #endif /* !_SYS_POLL_H_ */ 121