sysctl.c revision 1.7
1 /* $NetBSD: sysctl.c,v 1.7 1998/11/13 12:31:53 christos Exp $ */ 2 3 /*- 4 * Copyright (c) 1993 5 * The Regents of the University of California. 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 the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #if defined(LIBC_SCCS) && !defined(lint) 38 #if 0 39 static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 1/4/94"; 40 #else 41 __RCSID("$NetBSD: sysctl.c,v 1.7 1998/11/13 12:31:53 christos Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include "namespace.h" 46 #include <sys/param.h> 47 #include <sys/sysctl.h> 48 49 #include <errno.h> 50 #include <limits.h> 51 #include <paths.h> 52 #include <stdio.h> 53 #include <string.h> 54 #include <unistd.h> 55 #include "extern.h" 56 57 #ifdef __weak_alias 58 __weak_alias(sysctl,_sysctl); 59 #endif 60 61 int 62 sysctl(name, namelen, oldp, oldlenp, newp, newlen) 63 int *name; 64 size_t namelen; 65 void *oldp; 66 const void *newp; 67 size_t *oldlenp, newlen; 68 { 69 if (name[0] != CTL_USER) 70 /* LINTED will fix when sysctl interface gets corrected */ 71 return (__sysctl(name, namelen, oldp, oldlenp, (void *)newp, newlen)); 72 73 if (newp != NULL) { 74 errno = EPERM; 75 return (-1); 76 } 77 if (namelen != 2) { 78 errno = EINVAL; 79 return (-1); 80 } 81 82 switch (name[1]) { 83 case USER_CS_PATH: 84 if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) 85 return (ENOMEM); 86 *oldlenp = sizeof(_PATH_STDPATH); 87 if (oldp != NULL) 88 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH)); 89 return (0); 90 } 91 92 if (oldp && *oldlenp < sizeof(int)) 93 return (ENOMEM); 94 *oldlenp = sizeof(int); 95 if (oldp == NULL) 96 return (0); 97 98 switch (name[1]) { 99 case USER_BC_BASE_MAX: 100 *(int *)oldp = BC_BASE_MAX; 101 return (0); 102 case USER_BC_DIM_MAX: 103 *(int *)oldp = BC_DIM_MAX; 104 return (0); 105 case USER_BC_SCALE_MAX: 106 *(int *)oldp = BC_SCALE_MAX; 107 return (0); 108 case USER_BC_STRING_MAX: 109 *(int *)oldp = BC_STRING_MAX; 110 return (0); 111 case USER_COLL_WEIGHTS_MAX: 112 *(int *)oldp = COLL_WEIGHTS_MAX; 113 return (0); 114 case USER_EXPR_NEST_MAX: 115 *(int *)oldp = EXPR_NEST_MAX; 116 return (0); 117 case USER_LINE_MAX: 118 *(int *)oldp = LINE_MAX; 119 return (0); 120 case USER_RE_DUP_MAX: 121 *(int *)oldp = RE_DUP_MAX; 122 return (0); 123 case USER_POSIX2_VERSION: 124 *(int *)oldp = _POSIX2_VERSION; 125 return (0); 126 case USER_POSIX2_C_BIND: 127 #ifdef POSIX2_C_BIND 128 *(int *)oldp = 1; 129 #else 130 *(int *)oldp = 0; 131 #endif 132 return (0); 133 case USER_POSIX2_C_DEV: 134 #ifdef POSIX2_C_DEV 135 *(int *)oldp = 1; 136 #else 137 *(int *)oldp = 0; 138 #endif 139 return (0); 140 case USER_POSIX2_CHAR_TERM: 141 #ifdef POSIX2_CHAR_TERM 142 *(int *)oldp = 1; 143 #else 144 *(int *)oldp = 0; 145 #endif 146 return (0); 147 case USER_POSIX2_FORT_DEV: 148 #ifdef POSIX2_FORT_DEV 149 *(int *)oldp = 1; 150 #else 151 *(int *)oldp = 0; 152 #endif 153 return (0); 154 case USER_POSIX2_FORT_RUN: 155 #ifdef POSIX2_FORT_RUN 156 *(int *)oldp = 1; 157 #else 158 *(int *)oldp = 0; 159 #endif 160 return (0); 161 case USER_POSIX2_LOCALEDEF: 162 #ifdef POSIX2_LOCALEDEF 163 *(int *)oldp = 1; 164 #else 165 *(int *)oldp = 0; 166 #endif 167 return (0); 168 case USER_POSIX2_SW_DEV: 169 #ifdef POSIX2_SW_DEV 170 *(int *)oldp = 1; 171 #else 172 *(int *)oldp = 0; 173 #endif 174 return (0); 175 case USER_POSIX2_UPE: 176 #ifdef POSIX2_UPE 177 *(int *)oldp = 1; 178 #else 179 *(int *)oldp = 0; 180 #endif 181 return (0); 182 case USER_STREAM_MAX: 183 *(int *)oldp = FOPEN_MAX; 184 return (0); 185 case USER_TZNAME_MAX: 186 *(int *)oldp = NAME_MAX; 187 return (0); 188 default: 189 errno = EINVAL; 190 return (-1); 191 } 192 /* NOTREACHED */ 193 } 194
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