1 /* $NetBSD: sysctl.c,v 1.3 1995/03/04 01:56:11 cgd 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 #if defined(LIBC_SCCS) && !defined(lint) 37 #if 0 38 static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 1/4/94"; 39 #else 40 static char rcsid[] = "$NetBSD: sysctl.c,v 1.3 1995/03/04 01:56:11 cgd Exp $"; 41 #endif 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include <sys/param.h> 45 #include <sys/sysctl.h> 46 47 #include <errno.h> 48 #include <limits.h> 49 #include <paths.h> 50 #include <stdio.h> 51 #include <unistd.h> 52 53 int 54 sysctl(name, namelen, oldp, oldlenp, newp, newlen) 55 int *name; 56 u_int namelen; 57 void *oldp, *newp; 58 size_t *oldlenp, newlen; 59 { 60 if (name[0] != CTL_USER) 61 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen)); 62 63 if (newp != NULL) { 64 errno = EPERM; 65 return (-1); 66 } 67 if (namelen != 2) { 68 errno = EINVAL; 69 return (-1); 70 } 71 72 switch (name[1]) { 73 case USER_CS_PATH: 74 if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) 75 return (ENOMEM); 76 *oldlenp = sizeof(_PATH_STDPATH); 77 if (oldp != NULL) 78 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH)); 79 return (0); 80 } 81 82 if (oldp && *oldlenp < sizeof(int)) 83 return (ENOMEM); 84 *oldlenp = sizeof(int); 85 if (oldp == NULL) 86 return (0); 87 88 switch (name[1]) { 89 case USER_BC_BASE_MAX: 90 *(int *)oldp = BC_BASE_MAX; 91 return (0); 92 case USER_BC_DIM_MAX: 93 *(int *)oldp = BC_DIM_MAX; 94 return (0); 95 case USER_BC_SCALE_MAX: 96 *(int *)oldp = BC_SCALE_MAX; 97 return (0); 98 case USER_BC_STRING_MAX: 99 *(int *)oldp = BC_STRING_MAX; 100 return (0); 101 case USER_COLL_WEIGHTS_MAX: 102 *(int *)oldp = COLL_WEIGHTS_MAX; 103 return (0); 104 case USER_EXPR_NEST_MAX: 105 *(int *)oldp = EXPR_NEST_MAX; 106 return (0); 107 case USER_LINE_MAX: 108 *(int *)oldp = LINE_MAX; 109 return (0); 110 case USER_RE_DUP_MAX: 111 *(int *)oldp = RE_DUP_MAX; 112 return (0); 113 case USER_POSIX2_VERSION: 114 *(int *)oldp = _POSIX2_VERSION; 115 return (0); 116 case USER_POSIX2_C_BIND: 117 #ifdef POSIX2_C_BIND 118 *(int *)oldp = 1; 119 #else 120 *(int *)oldp = 0; 121 #endif 122 return (0); 123 case USER_POSIX2_C_DEV: 124 #ifdef POSIX2_C_DEV 125 *(int *)oldp = 1; 126 #else 127 *(int *)oldp = 0; 128 #endif 129 return (0); 130 case USER_POSIX2_CHAR_TERM: 131 #ifdef POSIX2_CHAR_TERM 132 *(int *)oldp = 1; 133 #else 134 *(int *)oldp = 0; 135 #endif 136 return (0); 137 case USER_POSIX2_FORT_DEV: 138 #ifdef POSIX2_FORT_DEV 139 *(int *)oldp = 1; 140 #else 141 *(int *)oldp = 0; 142 #endif 143 return (0); 144 case USER_POSIX2_FORT_RUN: 145 #ifdef POSIX2_FORT_RUN 146 *(int *)oldp = 1; 147 #else 148 *(int *)oldp = 0; 149 #endif 150 return (0); 151 case USER_POSIX2_LOCALEDEF: 152 #ifdef POSIX2_LOCALEDEF 153 *(int *)oldp = 1; 154 #else 155 *(int *)oldp = 0; 156 #endif 157 return (0); 158 case USER_POSIX2_SW_DEV: 159 #ifdef POSIX2_SW_DEV 160 *(int *)oldp = 1; 161 #else 162 *(int *)oldp = 0; 163 #endif 164 return (0); 165 case USER_POSIX2_UPE: 166 #ifdef POSIX2_UPE 167 *(int *)oldp = 1; 168 #else 169 *(int *)oldp = 0; 170 #endif 171 return (0); 172 case USER_STREAM_MAX: 173 *(int *)oldp = FOPEN_MAX; 174 return (0); 175 case USER_TZNAME_MAX: 176 *(int *)oldp = NAME_MAX; 177 return (0); 178 default: 179 errno = EINVAL; 180 return (-1); 181 } 182 /* NOTREACHED */ 183 } 184