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/param.h>
36#include <sys/systm.h>
37#include <sys/kernel.h>
38#include <sys/queue.h>
39#include <sys/sysctl.h>
40#include <sys/vnode.h>
41#include <sys/proc.h>
42#include <sys/posix4.h>
43
44static int facility[CTL_P1003_1B_MAXID - 1];
45static int facility_initialized[CTL_P1003_1B_MAXID - 1];
46
47static int p31b_sysctl_proc(SYSCTL_HANDLER_ARGS);
48
49/* OID_AUTO isn't working with sysconf(3).  I guess I'd have to
50 * modify it to do a lookup by name from the index.
51 * For now I've left it a top-level sysctl.
52 */
53
54#if 1
55
56SYSCTL_DECL(_p1003_1b);
57
58#define P1B_SYSCTL(num, name)  \
59	SYSCTL_INT(_p1003_1b, num, name, CTLFLAG_RD | CTLFLAG_CAPRD, \
60	facility + num - 1, 0, "");
61#define P1B_SYSCTL_RW(num, name)  \
62	SYSCTL_PROC(_p1003_1b, num, name, \
63	    CTLTYPE_INT | CTLFLAG_RW | CTLFLAG_NEEDGIANT, 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 | CTLFLAG_MPSAFE, 0,
77    "P1003.1B");
78
79#endif
80
81P1B_SYSCTL(CTL_P1003_1B_ASYNCHRONOUS_IO, asynchronous_io);
82P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files);
83P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock);
84P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range);
85P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection);
86P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing);
87P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io);
88P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling);
89P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals);
90P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores);
91P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync);
92P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects);
93P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io);
94P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers);
95P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max);
96P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max);
97P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max);
98P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max);
99P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize);
100P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max);
101P1B_SYSCTL_RW(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max);
102P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max);
103P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max);
104P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max);
105
106#define P31B_VALID(num)	((num) >= 1 && (num) < CTL_P1003_1B_MAXID)
107
108static int
109p31b_sysctl_proc(SYSCTL_HANDLER_ARGS)
110{
111	int error, num, val;
112
113	num = arg2;
114	if (!P31B_VALID(num))
115		return (EINVAL);
116	val = facility_initialized[num - 1] ? facility[num - 1] : 0;
117	error = sysctl_handle_int(oidp, &val, 0, req);
118	if (error == 0 && req->newptr != NULL && facility_initialized[num - 1])
119		facility[num - 1] = val;
120	return (error);
121}
122
123/* p31b_setcfg: Set the configuration
124 */
125void
126p31b_setcfg(int num, int value)
127{
128
129	if (P31B_VALID(num)) {
130		facility[num - 1] = value;
131		facility_initialized[num - 1] = 1;
132	}
133}
134
135void
136p31b_unsetcfg(int num)
137{
138
139	facility[num - 1] = 0;
140	facility_initialized[num - 1] = 0;
141}
142
143int
144p31b_getcfg(int num)
145{
146
147	if (P31B_VALID(num))
148		return (facility[num - 1]);
149	return (0);
150}
151
152int
153p31b_iscfg(int num)
154{
155
156	if (P31B_VALID(num))
157		return (facility_initialized[num - 1]);
158	return (0);
159}
160
161/*
162 * Turn on indications for standard (non-configurable) kernel features.
163 */
164static void
165p31b_set_standard(void *dummy)
166{
167
168	p31b_setcfg(CTL_P1003_1B_FSYNC, 200112L);
169	p31b_setcfg(CTL_P1003_1B_MAPPED_FILES, 200112L);
170	p31b_setcfg(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, 200112L);
171	p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE);
172}
173
174SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard,
175    NULL);
176