1 /*- 2 * Copyright (c) 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #if defined(LIBC_SCCS) && !defined(lint) 35 static char sccsid[] = "@(#)sysctl.c 8.2 (Berkeley) 1/4/94"; 36 #endif /* LIBC_SCCS and not lint */ 37 38 #include <sys/param.h> 39 #include <sys/sysctl.h> 40 41 #include <errno.h> 42 #include <limits.h> 43 #include <paths.h> 44 #include <stdio.h> 45 #include <unistd.h> 46 #include <string.h> 47 48 int 49 sysctl(name, namelen, oldp, oldlenp, newp, newlen) 50 int *name; 51 u_int namelen; 52 void *oldp, *newp; 53 size_t *oldlenp, newlen; 54 { 55 if (name[0] != CTL_USER) 56 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen)); 57 58 if (newp != NULL) { 59 errno = EPERM; 60 return (-1); 61 } 62 if (namelen != 2) { 63 errno = EINVAL; 64 return (-1); 65 } 66 67 switch (name[1]) { 68 case USER_CS_PATH: 69 if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) { 70 errno = ENOMEM; 71 return -1; 72 } 73 *oldlenp = sizeof(_PATH_STDPATH); 74 if (oldp != NULL) 75 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH)); 76 return (0); 77 } 78 79 if (oldp && *oldlenp < sizeof(int)) { 80 errno = ENOMEM; 81 return (-1); 82 } 83 *oldlenp = sizeof(int); 84 if (oldp == NULL) 85 return (0); 86 87 switch (name[1]) { 88 case USER_BC_BASE_MAX: 89 *(int *)oldp = BC_BASE_MAX; 90 return (0); 91 case USER_BC_DIM_MAX: 92 *(int *)oldp = BC_DIM_MAX; 93 return (0); 94 case USER_BC_SCALE_MAX: 95 *(int *)oldp = BC_SCALE_MAX; 96 return (0); 97 case USER_BC_STRING_MAX: 98 *(int *)oldp = BC_STRING_MAX; 99 return (0); 100 case USER_COLL_WEIGHTS_MAX: 101 *(int *)oldp = COLL_WEIGHTS_MAX; 102 return (0); 103 case USER_EXPR_NEST_MAX: 104 *(int *)oldp = EXPR_NEST_MAX; 105 return (0); 106 case USER_LINE_MAX: 107 *(int *)oldp = LINE_MAX; 108 return (0); 109 case USER_RE_DUP_MAX: 110 *(int *)oldp = RE_DUP_MAX; 111 return (0); 112 case USER_POSIX2_VERSION: 113 *(int *)oldp = _POSIX2_VERSION; 114 return (0); 115 case USER_POSIX2_C_BIND: 116 #ifdef POSIX2_C_BIND 117 *(int *)oldp = 1; 118 #else 119 *(int *)oldp = 0; 120 #endif 121 return (0); 122 case USER_POSIX2_C_DEV: 123 #ifdef POSIX2_C_DEV 124 *(int *)oldp = 1; 125 #else 126 *(int *)oldp = 0; 127 #endif 128 return (0); 129 case USER_POSIX2_CHAR_TERM: 130 #ifdef POSIX2_CHAR_TERM 131 *(int *)oldp = 1; 132 #else 133 *(int *)oldp = 0; 134 #endif 135 return (0); 136 case USER_POSIX2_FORT_DEV: 137 #ifdef POSIX2_FORT_DEV 138 *(int *)oldp = 1; 139 #else 140 *(int *)oldp = 0; 141 #endif 142 return (0); 143 case USER_POSIX2_FORT_RUN: 144 #ifdef POSIX2_FORT_RUN 145 *(int *)oldp = 1; 146 #else 147 *(int *)oldp = 0; 148 #endif 149 return (0); 150 case USER_POSIX2_LOCALEDEF: 151 #ifdef POSIX2_LOCALEDEF 152 *(int *)oldp = 1; 153 #else 154 *(int *)oldp = 0; 155 #endif 156 return (0); 157 case USER_POSIX2_SW_DEV: 158 #ifdef POSIX2_SW_DEV 159 *(int *)oldp = 1; 160 #else 161 *(int *)oldp = 0; 162 #endif 163 return (0); 164 case USER_POSIX2_UPE: 165 #ifdef POSIX2_UPE 166 *(int *)oldp = 1; 167 #else 168 *(int *)oldp = 0; 169 #endif 170 return (0); 171 case USER_STREAM_MAX: 172 *(int *)oldp = FOPEN_MAX; 173 return (0); 174 case USER_TZNAME_MAX: 175 *(int *)oldp = NAME_MAX; 176 return (0); 177 default: 178 errno = EINVAL; 179 return (-1); 180 } 181 /* NOTREACHED */ 182 } 183