sysctl.c revision 1.4.4.1
1 /* $NetBSD: sysctl.c,v 1.4.4.1 1996/09/19 20:03:58 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 1.4.4.1 1996/09/19 20:03:58 jtc Exp $"; 41 #endif 42 #endif /* LIBC_SCCS and not lint */ 43 44 #include "namespace.h" 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 55 #ifdef __weak_alias 56 __weak_alias(sysctl,_sysctl); 57 #endif 58 59 int 60 sysctl(name, namelen, oldp, oldlenp, newp, newlen) 61 int *name; 62 u_int namelen; 63 void *oldp, *newp; 64 size_t *oldlenp, newlen; 65 { 66 if (name[0] != CTL_USER) 67 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen)); 68 69 if (newp != NULL) { 70 errno = EPERM; 71 return (-1); 72 } 73 if (namelen != 2) { 74 errno = EINVAL; 75 return (-1); 76 } 77 78 switch (name[1]) { 79 case USER_CS_PATH: 80 if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) 81 return (ENOMEM); 82 *oldlenp = sizeof(_PATH_STDPATH); 83 if (oldp != NULL) 84 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH)); 85 return (0); 86 } 87 88 if (oldp && *oldlenp < sizeof(int)) 89 return (ENOMEM); 90 *oldlenp = sizeof(int); 91 if (oldp == NULL) 92 return (0); 93 94 switch (name[1]) { 95 case USER_BC_BASE_MAX: 96 *(int *)oldp = BC_BASE_MAX; 97 return (0); 98 case USER_BC_DIM_MAX: 99 *(int *)oldp = BC_DIM_MAX; 100 return (0); 101 case USER_BC_SCALE_MAX: 102 *(int *)oldp = BC_SCALE_MAX; 103 return (0); 104 case USER_BC_STRING_MAX: 105 *(int *)oldp = BC_STRING_MAX; 106 return (0); 107 case USER_COLL_WEIGHTS_MAX: 108 *(int *)oldp = COLL_WEIGHTS_MAX; 109 return (0); 110 case USER_EXPR_NEST_MAX: 111 *(int *)oldp = EXPR_NEST_MAX; 112 return (0); 113 case USER_LINE_MAX: 114 *(int *)oldp = LINE_MAX; 115 return (0); 116 case USER_RE_DUP_MAX: 117 *(int *)oldp = RE_DUP_MAX; 118 return (0); 119 case USER_POSIX2_VERSION: 120 *(int *)oldp = _POSIX2_VERSION; 121 return (0); 122 case USER_POSIX2_C_BIND: 123 #ifdef POSIX2_C_BIND 124 *(int *)oldp = 1; 125 #else 126 *(int *)oldp = 0; 127 #endif 128 return (0); 129 case USER_POSIX2_C_DEV: 130 #ifdef POSIX2_C_DEV 131 *(int *)oldp = 1; 132 #else 133 *(int *)oldp = 0; 134 #endif 135 return (0); 136 case USER_POSIX2_CHAR_TERM: 137 #ifdef POSIX2_CHAR_TERM 138 *(int *)oldp = 1; 139 #else 140 *(int *)oldp = 0; 141 #endif 142 return (0); 143 case USER_POSIX2_FORT_DEV: 144 #ifdef POSIX2_FORT_DEV 145 *(int *)oldp = 1; 146 #else 147 *(int *)oldp = 0; 148 #endif 149 return (0); 150 case USER_POSIX2_FORT_RUN: 151 #ifdef POSIX2_FORT_RUN 152 *(int *)oldp = 1; 153 #else 154 *(int *)oldp = 0; 155 #endif 156 return (0); 157 case USER_POSIX2_LOCALEDEF: 158 #ifdef POSIX2_LOCALEDEF 159 *(int *)oldp = 1; 160 #else 161 *(int *)oldp = 0; 162 #endif 163 return (0); 164 case USER_POSIX2_SW_DEV: 165 #ifdef POSIX2_SW_DEV 166 *(int *)oldp = 1; 167 #else 168 *(int *)oldp = 0; 169 #endif 170 return (0); 171 case USER_POSIX2_UPE: 172 #ifdef POSIX2_UPE 173 *(int *)oldp = 1; 174 #else 175 *(int *)oldp = 0; 176 #endif 177 return (0); 178 case USER_STREAM_MAX: 179 *(int *)oldp = FOPEN_MAX; 180 return (0); 181 case USER_TZNAME_MAX: 182 *(int *)oldp = NAME_MAX; 183 return (0); 184 default: 185 errno = EINVAL; 186 return (-1); 187 } 188 /* NOTREACHED */ 189 } 190
Indexes created Thu Sep 25 16:09:42 GMT 2025