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("$FreeBSD$"); 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 47 static int facility[CTL_P1003_1B_MAXID - 1]; 48 static int facility_initialized[CTL_P1003_1B_MAXID - 1]; 49 50 static 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 59 SYSCTL_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, \ 66 CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, NULL, num, \ 67 p31b_sysctl_proc, "I", ""); 68 69 #else 70 71 SYSCTL_DECL(_kern_p1003_1b); 72 73 #define P1B_SYSCTL(num, name) \ 74 SYSCTL_INT(_kern_p1003_1b, OID_AUTO, name, CTLFLAG_RD | CTLFLAG_CAPRD, \ 75 facility + num - 1, 0, ""); 76 #define P1B_SYSCTL_RW(num, name) \ 77 SYSCTL_PROC(_p1003_1b, OID_AUTO, name, CTLTYPE_INT | CTLFLAG_RW, NULL, \ 78 num, p31b_sysctl_proc, "I", ""); 79 SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW | CTLFLAG_MPSAFE, 0, 80 "P1003.1B"); 81 82 #endif 83 84 P1B_SYSCTL(CTL_P1003_1B_ASYNCHRONOUS_IO, asynchronous_io); 85 P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files); 86 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock); 87 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range); 88 P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection); 89 P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing); 90 P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io); 91 P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling); 92 P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals); 93 P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores); 94 P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync); 95 P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects); 96 P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io); 97 P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers); 98 P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max); 99 P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max); 100 P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max); 101 P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max); 102 P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize); 103 P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max); 104 P1B_SYSCTL_RW(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max); 105 P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max); 106 P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max); 107 P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max); 108 109 #define P31B_VALID(num) ((num) >= 1 && (num) < CTL_P1003_1B_MAXID) 110 111 static int 112 p31b_sysctl_proc(SYSCTL_HANDLER_ARGS) 113 { 114 int error, num, val; 115 116 num = arg2; 117 if (!P31B_VALID(num)) 118 return (EINVAL); 119 val = facility_initialized[num - 1] ? facility[num - 1] : 0; 120 error = sysctl_handle_int(oidp, &val, 0, req); 121 if (error == 0 && req->newptr != NULL && facility_initialized[num - 1]) 122 facility[num - 1] = val; 123 return (error); 124 } 125 126 /* p31b_setcfg: Set the configuration 127 */ 128 void 129 p31b_setcfg(int num, int value) 130 { 131 132 if (P31B_VALID(num)) { 133 facility[num - 1] = value; 134 facility_initialized[num - 1] = 1; 135 } 136 } 137 138 void 139 p31b_unsetcfg(int num) 140 { 141 142 facility[num - 1] = 0; 143 facility_initialized[num - 1] = 0; 144 } 145 146 int 147 p31b_getcfg(int num) 148 { 149 150 if (P31B_VALID(num)) 151 return (facility[num - 1]); 152 return (0); 153 } 154 155 int 156 p31b_iscfg(int num) 157 { 158 159 if (P31B_VALID(num)) 160 return (facility_initialized[num - 1]); 161 return (0); 162 } 163 164 /* 165 * Turn on indications for standard (non-configurable) kernel features. 166 */ 167 static void 168 p31b_set_standard(void *dummy) 169 { 170 171 p31b_setcfg(CTL_P1003_1B_FSYNC, 200112L); 172 p31b_setcfg(CTL_P1003_1B_MAPPED_FILES, 200112L); 173 p31b_setcfg(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, 200112L); 174 p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE); 175 } 176 177 SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard, 178 NULL); 179