FreeBSD/Linux Kernel Cross Reference
sys/kern/posix4_mib.c
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, CTLTYPE_INT | CTLFLAG_RW, NULL, num, \
66 p31b_sysctl_proc, "I", "");
67
68 #else
69
70 SYSCTL_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", "");
78 SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B");
79
80 #endif
81
82 P1B_SYSCTL(CTL_P1003_1B_ASYNCHRONOUS_IO, asynchronous_io);
83 P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files);
84 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock);
85 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range);
86 P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection);
87 P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing);
88 P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io);
89 P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling);
90 P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals);
91 P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores);
92 P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync);
93 P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects);
94 P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io);
95 P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers);
96 P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max);
97 P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max);
98 P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max);
99 P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max);
100 P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize);
101 P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max);
102 P1B_SYSCTL_RW(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max);
103 P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max);
104 P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max);
105 P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max);
106
107 #define P31B_VALID(num) ((num) >= 1 && (num) < CTL_P1003_1B_MAXID)
108
109 static int
110 p31b_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 */
126 void
127 p31b_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
136 void
137 p31b_unsetcfg(int num)
138 {
139
140 facility[num - 1] = 0;
141 facility_initialized[num - 1] = 0;
142 }
143
144 int
145 p31b_getcfg(int num)
146 {
147
148 if (P31B_VALID(num))
149 return (facility[num - 1]);
150 return (0);
151 }
152
153 int
154 p31b_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 */
165 static void
166 p31b_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
175 SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard,
176 NULL);
177
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