posix4_mib.c revision 330897
1/*- 2 * SPDX-License-Identifier: BSD-4-Clause 3 * 4 * Copyright (c) 1998 5 * HD Associates, Inc. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by HD Associates, Inc 18 * 4. Neither the name of the author nor the names of any co-contributors 19 * may be used to endorse or promote products derived from this software 20 * without specific prior written permission. 21 * 22 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34 35#include <sys/cdefs.h> 36__FBSDID("$FreeBSD: stable/11/sys/kern/posix4_mib.c 330897 2018-03-14 03:19:51Z eadler $"); 37 38#include <sys/param.h> 39#include <sys/systm.h> 40#include <sys/kernel.h> 41#include <sys/queue.h> 42#include <sys/sysctl.h> 43#include <sys/vnode.h> 44#include <sys/proc.h> 45#include <sys/posix4.h> 46 47static int facility[CTL_P1003_1B_MAXID - 1]; 48static int facility_initialized[CTL_P1003_1B_MAXID - 1]; 49 50static int p31b_sysctl_proc(SYSCTL_HANDLER_ARGS); 51 52/* OID_AUTO isn't working with sysconf(3). I guess I'd have to 53 * modify it to do a lookup by name from the index. 54 * For now I've left it a top-level sysctl. 55 */ 56 57#if 1 58 59SYSCTL_DECL(_p1003_1b); 60 61#define P1B_SYSCTL(num, name) \ 62 SYSCTL_INT(_p1003_1b, num, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 63 facility + num - 1, 0, ""); 64#define P1B_SYSCTL_RW(num, name) \ 65 SYSCTL_PROC(_p1003_1b, num, name, CTLTYPE_INT | CTLFLAG_RW, NULL, num, \ 66 p31b_sysctl_proc, "I", ""); 67 68#else 69 70SYSCTL_DECL(_kern_p1003_1b); 71 72#define P1B_SYSCTL(num, name) \ 73 SYSCTL_INT(_kern_p1003_1b, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 74 facility + num - 1, 0, ""); 75#define P1B_SYSCTL_RW(num, name) \ 76 SYSCTL_PROC(_p1003_1b, OID_AUTO, name, CTLTYPE_INT | CTLFLAG_RW, NULL, \ 77 num, p31b_sysctl_proc, "I", ""); 78SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B"); 79 80#endif 81 82P1B_SYSCTL(CTL_P1003_1B_ASYNCHRONOUS_IO, asynchronous_io); 83P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files); 84P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock); 85P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range); 86P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection); 87P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing); 88P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io); 89P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling); 90P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals); 91P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores); 92P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync); 93P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects); 94P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io); 95P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers); 96P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max); 97P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max); 98P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max); 99P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max); 100P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize); 101P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max); 102P1B_SYSCTL_RW(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max); 103P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max); 104P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max); 105P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max); 106 107#define P31B_VALID(num) ((num) >= 1 && (num) < CTL_P1003_1B_MAXID) 108 109static int 110p31b_sysctl_proc(SYSCTL_HANDLER_ARGS) 111{ 112 int error, num, val; 113 114 num = arg2; 115 if (!P31B_VALID(num)) 116 return (EINVAL); 117 val = facility_initialized[num - 1] ? facility[num - 1] : 0; 118 error = sysctl_handle_int(oidp, &val, 0, req); 119 if (error == 0 && req->newptr != NULL && facility_initialized[num - 1]) 120 facility[num - 1] = val; 121 return (error); 122} 123 124/* p31b_setcfg: Set the configuration 125 */ 126void 127p31b_setcfg(int num, int value) 128{ 129 130 if (P31B_VALID(num)) { 131 facility[num - 1] = value; 132 facility_initialized[num - 1] = 1; 133 } 134} 135 136void 137p31b_unsetcfg(int num) 138{ 139 140 facility[num - 1] = 0; 141 facility_initialized[num - 1] = 0; 142} 143 144int 145p31b_getcfg(int num) 146{ 147 148 if (P31B_VALID(num)) 149 return (facility[num - 1]); 150 return (0); 151} 152 153int 154p31b_iscfg(int num) 155{ 156 157 if (P31B_VALID(num)) 158 return (facility_initialized[num - 1]); 159 return (0); 160} 161 162/* 163 * Turn on indications for standard (non-configurable) kernel features. 164 */ 165static void 166p31b_set_standard(void *dummy) 167{ 168 169 p31b_setcfg(CTL_P1003_1B_FSYNC, 200112L); 170 p31b_setcfg(CTL_P1003_1B_MAPPED_FILES, 200112L); 171 p31b_setcfg(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, 200112L); 172 p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE); 173} 174 175SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard, 176 0); 177 178