posix4_mib.c revision 359652
1/*- 2 * Copyright (c) 1998 3 * HD Associates, Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by HD Associates, Inc 16 * 4. Neither the name of the author nor the names of any co-contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY HD ASSOCIATES AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL HD ASSOCIATES OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33#include <sys/cdefs.h> 34__FBSDID("$FreeBSD: stable/11/sys/kern/posix4_mib.c 359652 2020-04-06 07:16:31Z hselasky $"); 35 36#include <sys/param.h> 37#include <sys/systm.h> 38#include <sys/kernel.h> 39#include <sys/queue.h> 40#include <sys/sysctl.h> 41#include <sys/vnode.h> 42#include <sys/proc.h> 43#include <sys/posix4.h> 44 45static int facility[CTL_P1003_1B_MAXID - 1]; 46static int facility_initialized[CTL_P1003_1B_MAXID - 1]; 47 48static int p31b_sysctl_proc(SYSCTL_HANDLER_ARGS); 49 50/* OID_AUTO isn't working with sysconf(3). I guess I'd have to 51 * modify it to do a lookup by name from the index. 52 * For now I've left it a top-level sysctl. 53 */ 54 55#if 1 56 57SYSCTL_DECL(_p1003_1b); 58 59#define P1B_SYSCTL(num, name) \ 60 SYSCTL_INT(_p1003_1b, num, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 61 facility + num - 1, 0, ""); 62#define P1B_SYSCTL_RW(num, name) \ 63 SYSCTL_PROC(_p1003_1b, num, name, CTLTYPE_INT | CTLFLAG_RW, NULL, num, \ 64 p31b_sysctl_proc, "I", ""); 65 66#else 67 68SYSCTL_DECL(_kern_p1003_1b); 69 70#define P1B_SYSCTL(num, name) \ 71 SYSCTL_INT(_kern_p1003_1b, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 72 facility + num - 1, 0, ""); 73#define P1B_SYSCTL_RW(num, name) \ 74 SYSCTL_PROC(_p1003_1b, OID_AUTO, name, CTLTYPE_INT | CTLFLAG_RW, NULL, \ 75 num, p31b_sysctl_proc, "I", ""); 76SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B"); 77 78#endif 79 80P1B_SYSCTL(CTL_P1003_1B_ASYNCHRONOUS_IO, asynchronous_io); 81P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files); 82P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock); 83P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range); 84P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection); 85P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing); 86P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io); 87P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling); 88P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals); 89P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores); 90P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync); 91P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects); 92P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io); 93P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers); 94P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max); 95P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max); 96P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max); 97P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max); 98P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize); 99P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max); 100P1B_SYSCTL_RW(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max); 101P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max); 102P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max); 103P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max); 104 105#define P31B_VALID(num) ((num) >= 1 && (num) < CTL_P1003_1B_MAXID) 106 107static int 108p31b_sysctl_proc(SYSCTL_HANDLER_ARGS) 109{ 110 int error, num, val; 111 112 num = arg2; 113 if (!P31B_VALID(num)) 114 return (EINVAL); 115 val = facility_initialized[num - 1] ? facility[num - 1] : 0; 116 error = sysctl_handle_int(oidp, &val, 0, req); 117 if (error == 0 && req->newptr != NULL && facility_initialized[num - 1]) 118 facility[num - 1] = val; 119 return (error); 120} 121 122/* p31b_setcfg: Set the configuration 123 */ 124void 125p31b_setcfg(int num, int value) 126{ 127 128 if (P31B_VALID(num)) { 129 facility[num - 1] = value; 130 facility_initialized[num - 1] = 1; 131 } 132} 133 134void 135p31b_unsetcfg(int num) 136{ 137 138 facility[num - 1] = 0; 139 facility_initialized[num - 1] = 0; 140} 141 142int 143p31b_getcfg(int num) 144{ 145 146 if (P31B_VALID(num)) 147 return (facility[num - 1]); 148 return (0); 149} 150 151int 152p31b_iscfg(int num) 153{ 154 155 if (P31B_VALID(num)) 156 return (facility_initialized[num - 1]); 157 return (0); 158} 159 160/* 161 * Turn on indications for standard (non-configurable) kernel features. 162 */ 163static void 164p31b_set_standard(void *dummy) 165{ 166 167 p31b_setcfg(CTL_P1003_1B_FSYNC, 200112L); 168 p31b_setcfg(CTL_P1003_1B_MAPPED_FILES, 200112L); 169 p31b_setcfg(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, 200112L); 170 p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE); 171} 172 173SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard, 174 NULL); 175 176