1*0Sstevel@tonic-gate /* 2*0Sstevel@tonic-gate * CDDL HEADER START 3*0Sstevel@tonic-gate * 4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the 5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only 6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance 7*0Sstevel@tonic-gate * with the License. 8*0Sstevel@tonic-gate * 9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing. 11*0Sstevel@tonic-gate * See the License for the specific language governing permissions 12*0Sstevel@tonic-gate * and limitations under the License. 13*0Sstevel@tonic-gate * 14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each 15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the 17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying 18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner] 19*0Sstevel@tonic-gate * 20*0Sstevel@tonic-gate * CDDL HEADER END 21*0Sstevel@tonic-gate */ 22*0Sstevel@tonic-gate /* 23*0Sstevel@tonic-gate * Copyright 2004 Sun Microsystems, Inc. All rights reserved. 24*0Sstevel@tonic-gate * Use is subject to license terms. 25*0Sstevel@tonic-gate */ 26*0Sstevel@tonic-gate 27*0Sstevel@tonic-gate /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 28*0Sstevel@tonic-gate /* All Rights Reserved */ 29*0Sstevel@tonic-gate 30*0Sstevel@tonic-gate /* 31*0Sstevel@tonic-gate * University Copyright- Copyright (c) 1982, 1986, 1988 32*0Sstevel@tonic-gate * The Regents of the University of California 33*0Sstevel@tonic-gate * All Rights Reserved 34*0Sstevel@tonic-gate * 35*0Sstevel@tonic-gate * University Acknowledgment- Portions of this document are derived from 36*0Sstevel@tonic-gate * software developed by the University of California, Berkeley, and its 37*0Sstevel@tonic-gate * contributors. 38*0Sstevel@tonic-gate */ 39*0Sstevel@tonic-gate 40*0Sstevel@tonic-gate #ifndef _SYS_SELECT_H 41*0Sstevel@tonic-gate #define _SYS_SELECT_H 42*0Sstevel@tonic-gate 43*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI" 44*0Sstevel@tonic-gate 45*0Sstevel@tonic-gate #include <sys/feature_tests.h> 46*0Sstevel@tonic-gate 47*0Sstevel@tonic-gate #ifndef _KERNEL 48*0Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 49*0Sstevel@tonic-gate #include <sys/time_impl.h> 50*0Sstevel@tonic-gate #endif 51*0Sstevel@tonic-gate #include <sys/time.h> 52*0Sstevel@tonic-gate #endif /* _KERNEL */ 53*0Sstevel@tonic-gate 54*0Sstevel@tonic-gate #ifdef __cplusplus 55*0Sstevel@tonic-gate extern "C" { 56*0Sstevel@tonic-gate #endif 57*0Sstevel@tonic-gate 58*0Sstevel@tonic-gate 59*0Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 60*0Sstevel@tonic-gate /* 61*0Sstevel@tonic-gate * The sigset_t type is defined in <sys/signal.h> and duplicated 62*0Sstevel@tonic-gate * in <sys/ucontext.h> as a result of XPG4v2 requirements. XPG6 63*0Sstevel@tonic-gate * now allows the visibility of signal.h in this header, however 64*0Sstevel@tonic-gate * an order of inclusion problem occurs as a result of inclusion 65*0Sstevel@tonic-gate * of <sys/select.h> in <signal.h> under certain conditions. 66*0Sstevel@tonic-gate * Rather than include <sys/signal.h> here, we've duplicated 67*0Sstevel@tonic-gate * the sigset_t type instead. This type is required for the XPG6 68*0Sstevel@tonic-gate * introduced pselect() function also declared in this header. 69*0Sstevel@tonic-gate */ 70*0Sstevel@tonic-gate #ifndef _SIGSET_T 71*0Sstevel@tonic-gate #define _SIGSET_T 72*0Sstevel@tonic-gate typedef struct { /* signal set type */ 73*0Sstevel@tonic-gate unsigned int __sigbits[4]; 74*0Sstevel@tonic-gate } sigset_t; 75*0Sstevel@tonic-gate 76*0Sstevel@tonic-gate #if defined(_SYSCALL32) 77*0Sstevel@tonic-gate 78*0Sstevel@tonic-gate /* Kernel view of the ILP32 user sigset_t structure */ 79*0Sstevel@tonic-gate 80*0Sstevel@tonic-gate typedef struct { 81*0Sstevel@tonic-gate uint32_t __sigbits[4]; 82*0Sstevel@tonic-gate } sigset32_t; 83*0Sstevel@tonic-gate 84*0Sstevel@tonic-gate #endif /* _SYSCALL32 */ 85*0Sstevel@tonic-gate #endif /* _SIGSET_T */ 86*0Sstevel@tonic-gate 87*0Sstevel@tonic-gate #endif /* #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) ... */ 88*0Sstevel@tonic-gate 89*0Sstevel@tonic-gate /* 90*0Sstevel@tonic-gate * Select uses bit masks of file descriptors in longs. 91*0Sstevel@tonic-gate * These macros manipulate such bit fields. 92*0Sstevel@tonic-gate * FD_SETSIZE may be defined by the user, but the default here 93*0Sstevel@tonic-gate * should be >= NOFILE (param.h). 94*0Sstevel@tonic-gate */ 95*0Sstevel@tonic-gate #ifndef FD_SETSIZE 96*0Sstevel@tonic-gate #ifdef _LP64 97*0Sstevel@tonic-gate #define FD_SETSIZE 65536 98*0Sstevel@tonic-gate #else 99*0Sstevel@tonic-gate #define FD_SETSIZE 1024 100*0Sstevel@tonic-gate #endif /* _LP64 */ 101*0Sstevel@tonic-gate #elif FD_SETSIZE > 1024 && !defined(_LP64) 102*0Sstevel@tonic-gate #ifdef __PRAGMA_REDEFINE_EXTNAME 103*0Sstevel@tonic-gate #pragma redefine_extname select select_large_fdset 104*0Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 105*0Sstevel@tonic-gate #pragma redefine_extname pselect pselect_large_fdset 106*0Sstevel@tonic-gate #endif 107*0Sstevel@tonic-gate #else /* __PRAGMA_REDEFINE_EXTNAME */ 108*0Sstevel@tonic-gate #define select select_large_fdset 109*0Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 110*0Sstevel@tonic-gate #define pselect pselect_large_fdset 111*0Sstevel@tonic-gate #endif 112*0Sstevel@tonic-gate #endif /* __PRAGMA_REDEFINE_EXTNAME */ 113*0Sstevel@tonic-gate #endif /* FD_SETSIZE */ 114*0Sstevel@tonic-gate 115*0Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 116*0Sstevel@tonic-gate typedef long fd_mask; 117*0Sstevel@tonic-gate #endif 118*0Sstevel@tonic-gate typedef long fds_mask; 119*0Sstevel@tonic-gate 120*0Sstevel@tonic-gate /* 121*0Sstevel@tonic-gate * The value of _NBBY needs to be consistant with the value 122*0Sstevel@tonic-gate * of NBBY in <sys/param.h>. 123*0Sstevel@tonic-gate */ 124*0Sstevel@tonic-gate #define _NBBY 8 125*0Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 126*0Sstevel@tonic-gate #ifndef NBBY /* number of bits per byte */ 127*0Sstevel@tonic-gate #define NBBY _NBBY 128*0Sstevel@tonic-gate #endif 129*0Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 130*0Sstevel@tonic-gate 131*0Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 132*0Sstevel@tonic-gate #define NFDBITS (sizeof (fd_mask) * NBBY) /* bits per mask */ 133*0Sstevel@tonic-gate #endif 134*0Sstevel@tonic-gate #define FD_NFDBITS (sizeof (fds_mask) * _NBBY) /* bits per mask */ 135*0Sstevel@tonic-gate 136*0Sstevel@tonic-gate #define __howmany(__x, __y) (((__x)+((__y)-1))/(__y)) 137*0Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 138*0Sstevel@tonic-gate #ifndef howmany 139*0Sstevel@tonic-gate #define howmany(x, y) (((x)+((y)-1))/(y)) 140*0Sstevel@tonic-gate #endif 141*0Sstevel@tonic-gate #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */ 142*0Sstevel@tonic-gate 143*0Sstevel@tonic-gate #if !defined(_XPG4_2) || defined(__EXTENSIONS__) 144*0Sstevel@tonic-gate typedef struct fd_set { 145*0Sstevel@tonic-gate #else 146*0Sstevel@tonic-gate typedef struct __fd_set { 147*0Sstevel@tonic-gate #endif 148*0Sstevel@tonic-gate long fds_bits[__howmany(FD_SETSIZE, FD_NFDBITS)]; 149*0Sstevel@tonic-gate } fd_set; 150*0Sstevel@tonic-gate 151*0Sstevel@tonic-gate #define FD_SET(__n, __p) ((__p)->fds_bits[(__n)/FD_NFDBITS] |= \ 152*0Sstevel@tonic-gate (1ul << ((__n) % FD_NFDBITS))) 153*0Sstevel@tonic-gate 154*0Sstevel@tonic-gate #define FD_CLR(__n, __p) ((__p)->fds_bits[(__n)/FD_NFDBITS] &= \ 155*0Sstevel@tonic-gate ~(1ul << ((__n) % FD_NFDBITS))) 156*0Sstevel@tonic-gate 157*0Sstevel@tonic-gate #define FD_ISSET(__n, __p) (((__p)->fds_bits[(__n)/FD_NFDBITS] & \ 158*0Sstevel@tonic-gate (1ul << ((__n) % FD_NFDBITS))) != 0l) 159*0Sstevel@tonic-gate 160*0Sstevel@tonic-gate #ifdef _KERNEL 161*0Sstevel@tonic-gate #define FD_ZERO(p) bzero((p), sizeof (*(p))) 162*0Sstevel@tonic-gate #else 163*0Sstevel@tonic-gate #define FD_ZERO(__p) (void) memset((__p), 0, sizeof (*(__p))) 164*0Sstevel@tonic-gate #endif /* _KERNEL */ 165*0Sstevel@tonic-gate 166*0Sstevel@tonic-gate #ifndef _KERNEL 167*0Sstevel@tonic-gate #ifdef __STDC__ 168*0Sstevel@tonic-gate extern int select(int, fd_set *_RESTRICT_KYWD, fd_set *_RESTRICT_KYWD, 169*0Sstevel@tonic-gate fd_set *_RESTRICT_KYWD, struct timeval *_RESTRICT_KYWD); 170*0Sstevel@tonic-gate 171*0Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 172*0Sstevel@tonic-gate extern int pselect(int, fd_set *_RESTRICT_KYWD, fd_set *_RESTRICT_KYWD, 173*0Sstevel@tonic-gate fd_set *_RESTRICT_KYWD, const struct timespec *_RESTRICT_KYWD, 174*0Sstevel@tonic-gate const sigset_t *_RESTRICT_KYWD); 175*0Sstevel@tonic-gate #endif 176*0Sstevel@tonic-gate 177*0Sstevel@tonic-gate #else 178*0Sstevel@tonic-gate extern int select(); 179*0Sstevel@tonic-gate #if !defined(__XOPEN_OR_POSIX) || defined(_XPG6) || defined(__EXTENSIONS__) 180*0Sstevel@tonic-gate extern int pselect(); 181*0Sstevel@tonic-gate #endif 182*0Sstevel@tonic-gate #endif /* __STDC__ */ 183*0Sstevel@tonic-gate #endif /* _KERNEL */ 184*0Sstevel@tonic-gate 185*0Sstevel@tonic-gate #ifdef __cplusplus 186*0Sstevel@tonic-gate } 187*0Sstevel@tonic-gate #endif 188*0Sstevel@tonic-gate 189*0Sstevel@tonic-gate #endif /* _SYS_SELECT_H */ 190