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: releng/10.3/sys/kern/posix4_mib.c 224159 2011-07-17 23:05:24Z rwatson $");
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 | 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
68 SYSCTL_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", "");
76 SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B");
77
78 #endif
79
80 SYSCTL_INT(_p1003_1b, CTL_P1003_1B_ASYNCHRONOUS_IO, \
81 asynchronous_io, CTLFLAG_RD, &async_io_version, 0, "");
82 P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files);
83 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock);
84 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range);
85 P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection);
86 P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing);
87 P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io);
88 P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling);
89 P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals);
90 P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores);
91 P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync);
92 P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects);
93 P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io);
94 P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers);
95 P1B_SYSCTL(CTL_P1003_1B_AIO_LISTIO_MAX, aio_listio_max);
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] ? facility[num - 1] : 0;
118 error = sysctl_handle_int(oidp, &val, 0, req);
119 if (error == 0 && req->newptr != NULL && facility_initialized[num])
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 if (!p31b_iscfg(CTL_P1003_1B_AIO_LISTIO_MAX))
174 p31b_setcfg(CTL_P1003_1B_AIO_LISTIO_MAX, -1);
175 if (!p31b_iscfg(CTL_P1003_1B_AIO_MAX))
176 p31b_setcfg(CTL_P1003_1B_AIO_MAX, -1);
177 if (!p31b_iscfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX))
178 p31b_setcfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, -1);
179 }
180
181 SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard,
182 0);
183
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