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Diffstat (limited to 'usr/src/uts/common/sys/select.h')
| -rw-r--r-- | usr/src/uts/common/sys/select.h | 189 |
1 files changed, 189 insertions, 0 deletions
diff --git a/usr/src/uts/common/sys/select.h b/usr/src/uts/common/sys/select.h new file mode 100644 index 0000000000..720430be8c --- /dev/null +++ b/usr/src/uts/common/sys/select.h @@ -0,0 +1,189 @@ +/* + * CDDL HEADER START + * + * The contents of this file are subject to the terms of the + * Common Development and Distribution License, Version 1.0 only + * (the "License"). You may not use this file except in compliance + * with the License. + * + * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE + * or http://www.opensolaris.org/os/licensing. + * See the License for the specific language governing permissions + * and limitations under the License. + * + * When distributing Covered Code, include this CDDL HEADER in each + * file and include the License file at usr/src/OPENSOLARIS.LICENSE. + * If applicable, add the following below this CDDL HEADER, with the + * fields enclosed by brackets "[]" replaced with your own identifying + * information: Portions Copyright [yyyy] [name of copyright owner] + * + * CDDL HEADER END + */ +/* + * Copyright 2004 Sun Microsystems, Inc. All rights reserved. + * Use is subject to license terms. + */ + +/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ +/* All Rights Reserved */ + +/* + * University Copyright- Copyright (c) 1982, 1986, 1988 + * The Regents of the University of California + * All Rights Reserved + * + * University Acknowledgment- Portions of this document are derived from + * software developed by the University of California, Berkeley, and its + * contributors. + */ + +#ifndef _SYS_SELECT_H +#define _SYS_SELECT_H + +#pragma ident "%Z%%M% %I% %E% SMI" + +#include <sys/feature_tests.h> + +#ifndef _KERNEL +#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) +#include <sys/time_impl.h> +#endif +#include <sys/time.h> +#endif /* _KERNEL */ + +#ifdef __cplusplus +extern "C" { +#endif + + +#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) +/* + * The sigset_t type is defined in <sys/signal.h> and duplicated + * in <sys/ucontext.h> as a result of XPG4v2 requirements. XPG6 + * now allows the visibility of signal.h in this header, however + * an order of inclusion problem occurs as a result of inclusion + * of <sys/select.h> in <signal.h> under certain conditions. + * Rather than include <sys/signal.h> here, we've duplicated + * the sigset_t type instead. This type is required for the XPG6 + * introduced pselect() function also declared in this header. + */ +#ifndef _SIGSET_T +#define _SIGSET_T +typedef struct { /* signal set type */ + unsigned int __sigbits[4]; +} sigset_t; + +#if defined(_SYSCALL32) + +/* Kernel view of the ILP32 user sigset_t structure */ + +typedef struct { + uint32_t __sigbits[4]; +} sigset32_t; + +#endif /* _SYSCALL32 */ +#endif /* _SIGSET_T */ + +#endif /* #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */ + +/* + * Select uses bit masks of file descriptors in longs. + * These macros manipulate such bit fields. + * FD_SETSIZE may be defined by the user, but the default here + * should be >= NOFILE (param.h). + */ +#ifndef FD_SETSIZE +#ifdef _LP64 +#define FD_SETSIZE 65536 +#else +#define FD_SETSIZE 1024 +#endif /* _LP64 */ +#elif FD_SETSIZE > 1024 && !defined(_LP64) +#ifdef __PRAGMA_REDEFINE_EXTNAME +#pragma redefine_extname select select_large_fdset +#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) +#pragma redefine_extname pselect pselect_large_fdset +#endif +#else /* __PRAGMA_REDEFINE_EXTNAME */ +#define select select_large_fdset +#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) +#define pselect pselect_large_fdset +#endif +#endif /* __PRAGMA_REDEFINE_EXTNAME */ +#endif /* FD_SETSIZE */ + +#if !defined(_XPG4_2) || defined(__EXTENSIONS__) +typedef long fd_mask; +#endif +typedef long fds_mask; + +/* + * The value of _NBBY needs to be consistant with the value + * of NBBY in <sys/param.h>. + */ +#define _NBBY 8 +#if !defined(_XPG4_2) || defined(__EXTENSIONS__) +#ifndef NBBY /* number of bits per byte */ +#define NBBY _NBBY +#endif +#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ + +#if !defined(_XPG4_2) || defined(__EXTENSIONS__) +#define NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */ +#endif +#define FD_NFDBITS (sizeof (fds_mask) * _NBBY) /* bits per mask */ + +#define __howmany(__x, __y) (((__x)+((__y)-1))/(__y)) +#if !defined(_XPG4_2) || defined(__EXTENSIONS__) +#ifndef howmany +#define howmany(x, y) (((x)+((y)-1))/(y)) +#endif +#endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ + +#if !defined(_XPG4_2) || defined(__EXTENSIONS__) +typedef struct fd_set { +#else +typedef struct __fd_set { +#endif + long fds_bits[__howmany(FD_SETSIZE, FD_NFDBITS)]; +} fd_set; + +#define FD_SET(__n, __p) ((__p)->fds_bits[(__n)/FD_NFDBITS] |= \ + (1ul << ((__n) % FD_NFDBITS))) + +#define FD_CLR(__n, __p) ((__p)->fds_bits[(__n)/FD_NFDBITS] &= \ + ~(1ul << ((__n) % FD_NFDBITS))) + +#define FD_ISSET(__n, __p) (((__p)->fds_bits[(__n)/FD_NFDBITS] & \ + (1ul << ((__n) % FD_NFDBITS))) != 0l) + +#ifdef _KERNEL +#define FD_ZERO(p) bzero((p), sizeof (*(p))) +#else +#define FD_ZERO(__p) (void) memset((__p), 0, sizeof (*(__p))) +#endif /* _KERNEL */ + +#ifndef _KERNEL +#ifdef __STDC__ +extern int select(int, fd_set *_RESTRICT_KYWD, fd_set *_RESTRICT_KYWD, + fd_set *_RESTRICT_KYWD, struct timeval *_RESTRICT_KYWD); + +#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) +extern int pselect(int, fd_set *_RESTRICT_KYWD, fd_set *_RESTRICT_KYWD, + fd_set *_RESTRICT_KYWD, const struct timespec *_RESTRICT_KYWD, + const sigset_t *_RESTRICT_KYWD); +#endif + +#else +extern int select(); +#if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) +extern int pselect(); +#endif +#endif /* __STDC__ */ +#endif /* _KERNEL */ + +#ifdef __cplusplus +} +#endif + +#endif /* _SYS_SELECT_H */ |