| 1 | /* $NetBSD: poll.h,v 1.15 2009/11/11 09:48:51 rmind Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1998 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Charles M. Hannum. |
| 9 | * |
| 10 | * Redistribution and use in source and binary forms, with or without |
| 11 | * modification, are permitted provided that the following conditions |
| 12 | * are met: |
| 13 | * 1. Redistributions of source code must retain the above copyright |
| 14 | * notice, this list of conditions and the following disclaimer. |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright |
| 16 | * notice, this list of conditions and the following disclaimer in the |
| 17 | * documentation and/or other materials provided with the distribution. |
| 18 | * |
| 19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 29 | * POSSIBILITY OF SUCH DAMAGE. |
| 30 | */ |
| 31 | |
| 32 | #ifndef _SYS_POLL_H_ |
| 33 | #define _SYS_POLL_H_ |
| 34 | |
| 35 | #include <sys/featuretest.h> |
| 36 | |
| 37 | typedef unsigned int nfds_t; |
| 38 | |
| 39 | struct pollfd { |
| 40 | int fd; /* file descriptor */ |
| 41 | short events; /* events to look for */ |
| 42 | short revents; /* events returned */ |
| 43 | }; |
| 44 | |
| 45 | /* |
| 46 | * Testable events (may be specified in events field). |
| 47 | */ |
| 48 | #define POLLIN 0x0001 |
| 49 | #define POLLPRI 0x0002 |
| 50 | #define POLLOUT 0x0004 |
| 51 | #define POLLRDNORM 0x0040 |
| 52 | #define POLLWRNORM POLLOUT |
| 53 | #define POLLRDBAND 0x0080 |
| 54 | #define POLLWRBAND 0x0100 |
| 55 | |
| 56 | /* |
| 57 | * Non-testable events (may not be specified in events field). |
| 58 | */ |
| 59 | #define POLLERR 0x0008 |
| 60 | #define POLLHUP 0x0010 |
| 61 | #define POLLNVAL 0x0020 |
| 62 | |
| 63 | #if defined(_NETBSD_SOURCE) |
| 64 | /* |
| 65 | * Infinite timeout value. |
| 66 | */ |
| 67 | #define INFTIM -1 |
| 68 | #endif |
| 69 | |
| 70 | #ifdef _KERNEL |
| 71 | #include <sys/signal.h> /* for sigset_t */ |
| 72 | |
| 73 | struct lwp; |
| 74 | struct timespec; |
| 75 | |
| 76 | int pollcommon(register_t *, struct pollfd *, u_int, |
| 77 | struct timespec *, sigset_t *); |
| 78 | |
| 79 | #else |
| 80 | #include <sys/cdefs.h> |
| 81 | |
| 82 | __BEGIN_DECLS |
| 83 | int poll(struct pollfd *, nfds_t, int); |
| 84 | __END_DECLS |
| 85 | |
| 86 | #ifdef _NETBSD_SOURCE |
| 87 | #include <sys/sigtypes.h> /* for sigset_t */ |
| 88 | struct timespec; |
| 89 | |
| 90 | __BEGIN_DECLS |
| 91 | #ifndef __LIBC12_SOURCE__ |
| 92 | int pollts(struct pollfd * __restrict, nfds_t, |
| 93 | const struct timespec * __restrict, const sigset_t * __restrict) |
| 94 | __RENAME(__pollts50); |
| 95 | #endif /* __LIBC12_SOURCE__ */ |
| 96 | __END_DECLS |
| 97 | #endif /* _NETBSD_SOURCE */ |
| 98 | |
| 99 | #endif /* _KERNEL */ |
| 100 | |
| 101 | #endif /* !_SYS_POLL_H_ */ |
| 102 | |