sysctl.c revision 1.5
1 /* $NetBSD: sysctl.c,v 1.5 1997/07/13 19:33:49 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 1.5 1997/07/13 19:33:49 christos Exp $"); 42 #endif 43 #endif /* LIBC_SCCS and not lint */ 44 45 #include <sys/param.h> 46 #include <sys/sysctl.h> 47 48 #include <errno.h> 49 #include <limits.h> 50 #include <paths.h> 51 #include <stdio.h> 52 #include <string.h> 53 #include <unistd.h> 54 #include "extern.h" 55 56 int 57 sysctl(name, namelen, oldp, oldlenp, newp, newlen) 58 int *name; 59 u_int namelen; 60 void *oldp, *newp; 61 size_t *oldlenp, newlen; 62 { 63 if (name[0] != CTL_USER) 64 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen)); 65 66 if (newp != NULL) { 67 errno = EPERM; 68 return (-1); 69 } 70 if (namelen != 2) { 71 errno = EINVAL; 72 return (-1); 73 } 74 75 switch (name[1]) { 76 case USER_CS_PATH: 77 if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) 78 return (ENOMEM); 79 *oldlenp = sizeof(_PATH_STDPATH); 80 if (oldp != NULL) 81 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH)); 82 return (0); 83 } 84 85 if (oldp && *oldlenp < sizeof(int)) 86 return (ENOMEM); 87 *oldlenp = sizeof(int); 88 if (oldp == NULL) 89 return (0); 90 91 switch (name[1]) { 92 case USER_BC_BASE_MAX: 93 *(int *)oldp = BC_BASE_MAX; 94 return (0); 95 case USER_BC_DIM_MAX: 96 *(int *)oldp = BC_DIM_MAX; 97 return (0); 98 case USER_BC_SCALE_MAX: 99 *(int *)oldp = BC_SCALE_MAX; 100 return (0); 101 case USER_BC_STRING_MAX: 102 *(int *)oldp = BC_STRING_MAX; 103 return (0); 104 case USER_COLL_WEIGHTS_MAX: 105 *(int *)oldp = COLL_WEIGHTS_MAX; 106 return (0); 107 case USER_EXPR_NEST_MAX: 108 *(int *)oldp = EXPR_NEST_MAX; 109 return (0); 110 case USER_LINE_MAX: 111 *(int *)oldp = LINE_MAX; 112 return (0); 113 case USER_RE_DUP_MAX: 114 *(int *)oldp = RE_DUP_MAX; 115 return (0); 116 case USER_POSIX2_VERSION: 117 *(int *)oldp = _POSIX2_VERSION; 118 return (0); 119 case USER_POSIX2_C_BIND: 120 #ifdef POSIX2_C_BIND 121 *(int *)oldp = 1; 122 #else 123 *(int *)oldp = 0; 124 #endif 125 return (0); 126 case USER_POSIX2_C_DEV: 127 #ifdef POSIX2_C_DEV 128 *(int *)oldp = 1; 129 #else 130 *(int *)oldp = 0; 131 #endif 132 return (0); 133 case USER_POSIX2_CHAR_TERM: 134 #ifdef POSIX2_CHAR_TERM 135 *(int *)oldp = 1; 136 #else 137 *(int *)oldp = 0; 138 #endif 139 return (0); 140 case USER_POSIX2_FORT_DEV: 141 #ifdef POSIX2_FORT_DEV 142 *(int *)oldp = 1; 143 #else 144 *(int *)oldp = 0; 145 #endif 146 return (0); 147 case USER_POSIX2_FORT_RUN: 148 #ifdef POSIX2_FORT_RUN 149 *(int *)oldp = 1; 150 #else 151 *(int *)oldp = 0; 152 #endif 153 return (0); 154 case USER_POSIX2_LOCALEDEF: 155 #ifdef POSIX2_LOCALEDEF 156 *(int *)oldp = 1; 157 #else 158 *(int *)oldp = 0; 159 #endif 160 return (0); 161 case USER_POSIX2_SW_DEV: 162 #ifdef POSIX2_SW_DEV 163 *(int *)oldp = 1; 164 #else 165 *(int *)oldp = 0; 166 #endif 167 return (0); 168 case USER_POSIX2_UPE: 169 #ifdef POSIX2_UPE 170 *(int *)oldp = 1; 171 #else 172 *(int *)oldp = 0; 173 #endif 174 return (0); 175 case USER_STREAM_MAX: 176 *(int *)oldp = FOPEN_MAX; 177 return (0); 178 case USER_TZNAME_MAX: 179 *(int *)oldp = NAME_MAX; 180 return (0); 181 default: 182 errno = EINVAL; 183 return (-1); 184 } 185 /* NOTREACHED */ 186 } 187
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