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 47 int 48 sysctl(name, namelen, oldp, oldlenp, newp, newlen) 49 int *name; 50 u_int namelen; 51 void *oldp, *newp; 52 size_t *oldlenp, newlen; 53 { 54 if (name[0] != CTL_USER) 55 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen)); 56 57 if (newp != NULL) { 58 errno = EPERM; 59 return (-1); 60 } 61 if (namelen != 2) { 62 errno = EINVAL; 63 return (-1); 64 } 65 66 switch (name[1]) { 67 case USER_CS_PATH: 68 if (oldp && *oldlenp < sizeof(_PATH_STDPATH)) 69 return (ENOMEM); 70 *oldlenp = sizeof(_PATH_STDPATH); 71 if (oldp != NULL) 72 memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH)); 73 return (0); 74 } 75 76 if (oldp && *oldlenp < sizeof(int)) 77 return (ENOMEM); 78 *oldlenp = sizeof(int); 79 if (oldp == NULL) 80 return (0); 81 82 switch (name[1]) { 83 case USER_BC_BASE_MAX: 84 *(int *)oldp = BC_BASE_MAX; 85 return (0); 86 case USER_BC_DIM_MAX: 87 *(int *)oldp = BC_DIM_MAX; 88 return (0); 89 case USER_BC_SCALE_MAX: 90 *(int *)oldp = BC_SCALE_MAX; 91 return (0); 92 case USER_BC_STRING_MAX: 93 *(int *)oldp = BC_STRING_MAX; 94 return (0); 95 case USER_COLL_WEIGHTS_MAX: 96 *(int *)oldp = COLL_WEIGHTS_MAX; 97 return (0); 98 case USER_EXPR_NEST_MAX: 99 *(int *)oldp = EXPR_NEST_MAX; 100 return (0); 101 case USER_LINE_MAX: 102 *(int *)oldp = LINE_MAX; 103 return (0); 104 case USER_RE_DUP_MAX: 105 *(int *)oldp = RE_DUP_MAX; 106 return (0); 107 case USER_POSIX2_VERSION: 108 *(int *)oldp = _POSIX2_VERSION; 109 return (0); 110 case USER_POSIX2_C_BIND: 111 #ifdef POSIX2_C_BIND 112 *(int *)oldp = 1; 113 #else 114 *(int *)oldp = 0; 115 #endif 116 return (0); 117 case USER_POSIX2_C_DEV: 118 #ifdef POSIX2_C_DEV 119 *(int *)oldp = 1; 120 #else 121 *(int *)oldp = 0; 122 #endif 123 return (0); 124 case USER_POSIX2_CHAR_TERM: 125 #ifdef POSIX2_CHAR_TERM 126 *(int *)oldp = 1; 127 #else 128 *(int *)oldp = 0; 129 #endif 130 return (0); 131 case USER_POSIX2_FORT_DEV: 132 #ifdef POSIX2_FORT_DEV 133 *(int *)oldp = 1; 134 #else 135 *(int *)oldp = 0; 136 #endif 137 return (0); 138 case USER_POSIX2_FORT_RUN: 139 #ifdef POSIX2_FORT_RUN 140 *(int *)oldp = 1; 141 #else 142 *(int *)oldp = 0; 143 #endif 144 return (0); 145 case USER_POSIX2_LOCALEDEF: 146 #ifdef POSIX2_LOCALEDEF 147 *(int *)oldp = 1; 148 #else 149 *(int *)oldp = 0; 150 #endif 151 return (0); 152 case USER_POSIX2_SW_DEV: 153 #ifdef POSIX2_SW_DEV 154 *(int *)oldp = 1; 155 #else 156 *(int *)oldp = 0; 157 #endif 158 return (0); 159 case USER_POSIX2_UPE: 160 #ifdef POSIX2_UPE 161 *(int *)oldp = 1; 162 #else 163 *(int *)oldp = 0; 164 #endif 165 return (0); 166 case USER_STREAM_MAX: 167 *(int *)oldp = FOPEN_MAX; 168 return (0); 169 case USER_TZNAME_MAX: 170 *(int *)oldp = NAME_MAX; 171 return (0); 172 default: 173 errno = EINVAL; 174 return (-1); 175 } 176 /* NOTREACHED */ 177 } 178