1 /*-
2 * Copyright (c) 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #if defined(LIBC_SCCS) && !defined(lint)
9 static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 01/04/94";
10 #endif /* LIBC_SCCS and not lint */
11
12 #include <sys/param.h>
13 #include <sys/sysctl.h>
14
15 #include <errno.h>
16 #include <limits.h>
17 #include <paths.h>
18 #include <stdio.h>
19 #include <unistd.h>
20
21 int
sysctl(name,namelen,oldp,oldlenp,newp,newlen)22 sysctl(name, namelen, oldp, oldlenp, newp, newlen)
23 int *name;
24 u_int namelen;
25 void *oldp, *newp;
26 size_t *oldlenp, newlen;
27 {
28 if (name[0] != CTL_USER)
29 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
30
31 if (newp != NULL) {
32 errno = EPERM;
33 return (-1);
34 }
35 if (namelen != 2) {
36 errno = EINVAL;
37 return (-1);
38 }
39
40 switch (name[1]) {
41 case USER_CS_PATH:
42 if (oldp && *oldlenp < sizeof(_PATH_STDPATH))
43 return (ENOMEM);
44 *oldlenp = sizeof(_PATH_STDPATH);
45 if (oldp != NULL)
46 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
47 return (0);
48 }
49
50 if (oldp && *oldlenp < sizeof(int))
51 return (ENOMEM);
52 *oldlenp = sizeof(int);
53 if (oldp == NULL)
54 return (0);
55
56 switch (name[1]) {
57 case USER_BC_BASE_MAX:
58 *(int *)oldp = BC_BASE_MAX;
59 return (0);
60 case USER_BC_DIM_MAX:
61 *(int *)oldp = BC_DIM_MAX;
62 return (0);
63 case USER_BC_SCALE_MAX:
64 *(int *)oldp = BC_SCALE_MAX;
65 return (0);
66 case USER_BC_STRING_MAX:
67 *(int *)oldp = BC_STRING_MAX;
68 return (0);
69 case USER_COLL_WEIGHTS_MAX:
70 *(int *)oldp = COLL_WEIGHTS_MAX;
71 return (0);
72 case USER_EXPR_NEST_MAX:
73 *(int *)oldp = EXPR_NEST_MAX;
74 return (0);
75 case USER_LINE_MAX:
76 *(int *)oldp = LINE_MAX;
77 return (0);
78 case USER_RE_DUP_MAX:
79 *(int *)oldp = RE_DUP_MAX;
80 return (0);
81 case USER_POSIX2_VERSION:
82 *(int *)oldp = _POSIX2_VERSION;
83 return (0);
84 case USER_POSIX2_C_BIND:
85 #ifdef POSIX2_C_BIND
86 *(int *)oldp = 1;
87 #else
88 *(int *)oldp = 0;
89 #endif
90 return (0);
91 case USER_POSIX2_C_DEV:
92 #ifdef POSIX2_C_DEV
93 *(int *)oldp = 1;
94 #else
95 *(int *)oldp = 0;
96 #endif
97 return (0);
98 case USER_POSIX2_CHAR_TERM:
99 #ifdef POSIX2_CHAR_TERM
100 *(int *)oldp = 1;
101 #else
102 *(int *)oldp = 0;
103 #endif
104 return (0);
105 case USER_POSIX2_FORT_DEV:
106 #ifdef POSIX2_FORT_DEV
107 *(int *)oldp = 1;
108 #else
109 *(int *)oldp = 0;
110 #endif
111 return (0);
112 case USER_POSIX2_FORT_RUN:
113 #ifdef POSIX2_FORT_RUN
114 *(int *)oldp = 1;
115 #else
116 *(int *)oldp = 0;
117 #endif
118 return (0);
119 case USER_POSIX2_LOCALEDEF:
120 #ifdef POSIX2_LOCALEDEF
121 *(int *)oldp = 1;
122 #else
123 *(int *)oldp = 0;
124 #endif
125 return (0);
126 case USER_POSIX2_SW_DEV:
127 #ifdef POSIX2_SW_DEV
128 *(int *)oldp = 1;
129 #else
130 *(int *)oldp = 0;
131 #endif
132 return (0);
133 case USER_POSIX2_UPE:
134 #ifdef POSIX2_UPE
135 *(int *)oldp = 1;
136 #else
137 *(int *)oldp = 0;
138 #endif
139 return (0);
140 case USER_STREAM_MAX:
141 *(int *)oldp = FOPEN_MAX;
142 return (0);
143 case USER_TZNAME_MAX:
144 *(int *)oldp = NAME_MAX;
145 return (0);
146 default:
147 errno = EINVAL;
148 return (-1);
149 }
150 /* NOTREACHED */
151 }
152