xref: /freebsd/sys/kern/posix4_mib.c (revision 1e413cf93298b5b97441a21d9a50fdcd0ee9945e)
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 /* OID_AUTO isn't working with sysconf(3).  I guess I'd have to
49  * modify it to do a lookup by name from the index.
50  * For now I've left it a top-level sysctl.
51  */
52 
53 #if 1
54 
55 SYSCTL_DECL(_p1003_1b);
56 
57 #define P1B_SYSCTL(num, name)  \
58 SYSCTL_INT(_p1003_1b, num, \
59 	name, CTLFLAG_RD, facility + num - 1, 0, "");
60 
61 #else
62 
63 SYSCTL_DECL(_kern_p1003_1b);
64 
65 #define P1B_SYSCTL(num, name)  \
66 SYSCTL_INT(_kern_p1003_1b, OID_AUTO, \
67 	name, CTLFLAG_RD, facility + num - 1, 0, "");
68 SYSCTL_NODE(_kern, OID_AUTO, p1003_1b, CTLFLAG_RW, 0, "P1003.1B");
69 
70 #endif
71 
72 SYSCTL_INT(_p1003_1b, CTL_P1003_1B_ASYNCHRONOUS_IO, \
73 	asynchronous_io, CTLFLAG_RD, &async_io_version, 0, "");
74 P1B_SYSCTL(CTL_P1003_1B_MAPPED_FILES, mapped_files);
75 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK, memlock);
76 P1B_SYSCTL(CTL_P1003_1B_MEMLOCK_RANGE, memlock_range);
77 P1B_SYSCTL(CTL_P1003_1B_MEMORY_PROTECTION, memory_protection);
78 P1B_SYSCTL(CTL_P1003_1B_MESSAGE_PASSING, message_passing);
79 P1B_SYSCTL(CTL_P1003_1B_PRIORITIZED_IO, prioritized_io);
80 P1B_SYSCTL(CTL_P1003_1B_PRIORITY_SCHEDULING, priority_scheduling);
81 P1B_SYSCTL(CTL_P1003_1B_REALTIME_SIGNALS, realtime_signals);
82 P1B_SYSCTL(CTL_P1003_1B_SEMAPHORES, semaphores);
83 P1B_SYSCTL(CTL_P1003_1B_FSYNC, fsync);
84 P1B_SYSCTL(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, shared_memory_objects);
85 P1B_SYSCTL(CTL_P1003_1B_SYNCHRONIZED_IO, synchronized_io);
86 P1B_SYSCTL(CTL_P1003_1B_TIMERS, timers);
87 P1B_SYSCTL(CTL_P1003_1B_AIO_LISTIO_MAX, aio_listio_max);
88 P1B_SYSCTL(CTL_P1003_1B_AIO_MAX, aio_max);
89 P1B_SYSCTL(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, aio_prio_delta_max);
90 P1B_SYSCTL(CTL_P1003_1B_DELAYTIMER_MAX, delaytimer_max);
91 P1B_SYSCTL(CTL_P1003_1B_MQ_OPEN_MAX, mq_open_max);
92 P1B_SYSCTL(CTL_P1003_1B_PAGESIZE, pagesize);
93 P1B_SYSCTL(CTL_P1003_1B_RTSIG_MAX, rtsig_max);
94 P1B_SYSCTL(CTL_P1003_1B_SEM_NSEMS_MAX, sem_nsems_max);
95 P1B_SYSCTL(CTL_P1003_1B_SEM_VALUE_MAX, sem_value_max);
96 P1B_SYSCTL(CTL_P1003_1B_SIGQUEUE_MAX, sigqueue_max);
97 P1B_SYSCTL(CTL_P1003_1B_TIMER_MAX, timer_max);
98 
99 #define P31B_VALID(num)	((num) >= 1 && (num) < CTL_P1003_1B_MAXID)
100 
101 /* p31b_setcfg: Set the configuration
102  */
103 void
104 p31b_setcfg(int num, int value)
105 {
106 
107 	if (P31B_VALID(num)) {
108 		facility[num - 1] = value;
109 		facility_initialized[num - 1] = 1;
110 	}
111 }
112 
113 int
114 p31b_getcfg(int num)
115 {
116 
117 	if (P31B_VALID(num))
118 		return (facility[num - 1]);
119 	return (0);
120 }
121 
122 int
123 p31b_iscfg(int num)
124 {
125 
126 	if (P31B_VALID(num))
127 		return (facility_initialized[num - 1]);
128 	return (0);
129 }
130 
131 /*
132  * Turn on indications for standard (non-configurable) kernel features.
133  */
134 static void
135 p31b_set_standard(void *dummy)
136 {
137 	/* ??? p31b_setcfg(CTL_P1003_1B_FSYNC, 1); */
138 	p31b_setcfg(CTL_P1003_1B_MAPPED_FILES, 1);
139 	p31b_setcfg(CTL_P1003_1B_SHARED_MEMORY_OBJECTS, 1);
140 	p31b_setcfg(CTL_P1003_1B_PAGESIZE, PAGE_SIZE);
141 	if (!p31b_iscfg(CTL_P1003_1B_AIO_LISTIO_MAX))
142 		p31b_setcfg(CTL_P1003_1B_AIO_LISTIO_MAX, -1);
143 	if (!p31b_iscfg(CTL_P1003_1B_AIO_MAX))
144 		p31b_setcfg(CTL_P1003_1B_AIO_MAX, -1);
145 	if (!p31b_iscfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX))
146 		p31b_setcfg(CTL_P1003_1B_AIO_PRIO_DELTA_MAX, -1);
147 }
148 
149 SYSINIT(p31b_set_standard, SI_SUB_P1003_1B, SI_ORDER_ANY, p31b_set_standard,
150 	0);
151 
152