FreeBSD/Linux Kernel Cross Reference
sys/kern/posix4_mib.c
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("$FreeBSD$");
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
45 static int facility[CTL_P1003_1B_MAXID - 1];
46 static int facility_initialized[CTL_P1003_1B_MAXID - 1];
47
48 static 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
57 SYSCTL_DECL(_p1003_1b);
58
59 #define P1B_SYSCTL(num, name) \
60 SYSCTL_INT(_p1003_1b, num, name, CTLFLAG_RD, facility + num - 1, 0, "");
61 #define P1B_SYSCTL_RW(num, name) \
62 SYSCTL_PROC(_p1003_1b, num, name, CTLTYPE_INT | CTLFLAG_RW, NULL, num, \
63 p31b_sysctl_proc, "I", "");
64
65 #else
66
67 SYSCTL_DECL(_kern_p1003_1b);
68
69 #define P1B_SYSCTL(num, name) \
70 SYSCTL_INT(_kern_p1003_1b, OID_AUTO, name, CTLFLAG_RD, \
71 facility + num - 1, 0, "");
72 #define P1B_SYSCTL_RW(num, name) \
73 SYSCTL_PROC(_p1003_1b, OID_AUTO, name, CTLTYPE_INT | CTLFLAG_RW, NULL, \
74 num, p31b_sysctl_proc, "I", "");
75 SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B");
76
77 #endif
78
79 SYSCTL_INT(_p1003_1b, CTL_P1003_1B_ASYNCHRONOUS_IO, \
80 asynchronous_io, CTLFLAG_RD, &async_io_version, 0, "");
81 P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files);
82 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock);
83 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range);
84 P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection);
85 P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing);
86 P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io);
87 P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling);
88 P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals);
89 P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores);
90 P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync);
91 P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects);
92 P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io);
93 P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers);
94 P1B_SYSCTL(CTL_P1003_1B_AIO_LISTIO_MAX, aio_listio_max);
95 P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max);
96 P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max);
97 P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max);
98 P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max);
99 P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize);
100 P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max);
101 P1B_SYSCTL_RW(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max);
102 P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max);
103 P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max);
104 P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max);
105
106 #define P31B_VALID(num) ((num) >= 1 && (num) < CTL_P1003_1B_MAXID)
107
108 static int
109 p31b_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] ? facility[num - 1] : 0;
117 error = sysctl_handle_int(oidp, &val, 0, req);
118 if (error == 0 && req->newptr != NULL && facility_initialized[num])
119 facility[num - 1] = val;
120 return (error);
121 }
122
123 /* p31b_setcfg: Set the configuration
124 */
125 void
126 p31b_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
135 void
136 p31b_unsetcfg(int num)
137 {
138
139 facility[num - 1] = 0;
140 facility_initialized[num -1] = 0;
141 }
142
143 int
144 p31b_getcfg(int num)
145 {
146
147 if (P31B_VALID(num))
148 return (facility[num - 1]);
149 return (0);
150 }
151
152 int
153 p31b_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 */
164 static void
165 p31b_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 if (!p31b_iscfg(CTL_P1003_1B_AIO_LISTIO_MAX))
173 p31b_setcfg(CTL_P1003_1B_AIO_LISTIO_MAX, -1);
174 if (!p31b_iscfg(CTL_P1003_1B_AIO_MAX))
175 p31b_setcfg(CTL_P1003_1B_AIO_MAX, -1);
176 if (!p31b_iscfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX))
177 p31b_setcfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, -1);
178 }
179
180 SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard,
181 0);
182
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