sysctl.c revision 1.4
1 /* $NetBSD: sysctl.c,v 1.4 1995/05/13 06:58:24 jtc 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 1.4 1995/05/13 06:58:24 jtc 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 <string.h> 52 #include <unistd.h> 53 54 int 55 sysctl(name, namelen, oldp, oldlenp, newp, newlen) 56 int *name; 57 u_int namelen; 58 void *oldp, *newp; 59 size_t *oldlenp, newlen; 60 { 61 if (name[0] != CTL_USER) 62 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen)); 63 64 if (newp != NULL) { 65 errno = EPERM; 66 return (-1); 67 } 68 if (namelen != 2) { 69 errno = EINVAL; 70 return (-1); 71 } 72 73 switch (name[1]) { 74 case USER_CS_PATH: 75 if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) 76 return (ENOMEM); 77 *oldlenp = sizeof(_PATH_STDPATH); 78 if (oldp != NULL) 79 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH)); 80 return (0); 81 } 82 83 if (oldp && *oldlenp < sizeof(int)) 84 return (ENOMEM); 85 *oldlenp = sizeof(int); 86 if (oldp == NULL) 87 return (0); 88 89 switch (name[1]) { 90 case USER_BC_BASE_MAX: 91 *(int *)oldp = BC_BASE_MAX; 92 return (0); 93 case USER_BC_DIM_MAX: 94 *(int *)oldp = BC_DIM_MAX; 95 return (0); 96 case USER_BC_SCALE_MAX: 97 *(int *)oldp = BC_SCALE_MAX; 98 return (0); 99 case USER_BC_STRING_MAX: 100 *(int *)oldp = BC_STRING_MAX; 101 return (0); 102 case USER_COLL_WEIGHTS_MAX: 103 *(int *)oldp = COLL_WEIGHTS_MAX; 104 return (0); 105 case USER_EXPR_NEST_MAX: 106 *(int *)oldp = EXPR_NEST_MAX; 107 return (0); 108 case USER_LINE_MAX: 109 *(int *)oldp = LINE_MAX; 110 return (0); 111 case USER_RE_DUP_MAX: 112 *(int *)oldp = RE_DUP_MAX; 113 return (0); 114 case USER_POSIX2_VERSION: 115 *(int *)oldp = _POSIX2_VERSION; 116 return (0); 117 case USER_POSIX2_C_BIND: 118 #ifdef POSIX2_C_BIND 119 *(int *)oldp = 1; 120 #else 121 *(int *)oldp = 0; 122 #endif 123 return (0); 124 case USER_POSIX2_C_DEV: 125 #ifdef POSIX2_C_DEV 126 *(int *)oldp = 1; 127 #else 128 *(int *)oldp = 0; 129 #endif 130 return (0); 131 case USER_POSIX2_CHAR_TERM: 132 #ifdef POSIX2_CHAR_TERM 133 *(int *)oldp = 1; 134 #else 135 *(int *)oldp = 0; 136 #endif 137 return (0); 138 case USER_POSIX2_FORT_DEV: 139 #ifdef POSIX2_FORT_DEV 140 *(int *)oldp = 1; 141 #else 142 *(int *)oldp = 0; 143 #endif 144 return (0); 145 case USER_POSIX2_FORT_RUN: 146 #ifdef POSIX2_FORT_RUN 147 *(int *)oldp = 1; 148 #else 149 *(int *)oldp = 0; 150 #endif 151 return (0); 152 case USER_POSIX2_LOCALEDEF: 153 #ifdef POSIX2_LOCALEDEF 154 *(int *)oldp = 1; 155 #else 156 *(int *)oldp = 0; 157 #endif 158 return (0); 159 case USER_POSIX2_SW_DEV: 160 #ifdef POSIX2_SW_DEV 161 *(int *)oldp = 1; 162 #else 163 *(int *)oldp = 0; 164 #endif 165 return (0); 166 case USER_POSIX2_UPE: 167 #ifdef POSIX2_UPE 168 *(int *)oldp = 1; 169 #else 170 *(int *)oldp = 0; 171 #endif 172 return (0); 173 case USER_STREAM_MAX: 174 *(int *)oldp = FOPEN_MAX; 175 return (0); 176 case USER_TZNAME_MAX: 177 *(int *)oldp = NAME_MAX; 178 return (0); 179 default: 180 errno = EINVAL; 181 return (-1); 182 } 183 /* NOTREACHED */ 184 } 185
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