gen/sysctl.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
   7  *
   8  * This file contains Original Code and/or Modifications of Original Code
   9  * as defined in and that are subject to the Apple Public Source License
  10  * Version 2.0 (the 'License'). You may not use this file except in
  11  * compliance with the License. Please obtain a copy of the License at
  12  * http://www.opensource.apple.com/apsl/ and read it before using this
  13  * file.
  14  *
  15  * The Original Code and all software distributed under the License are
  16  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  17  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  18  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  20  * Please see the License for the specific language governing rights and
  21  * limitations under the License.
  22  *
  23  * @APPLE_LICENSE_HEADER_END@
  24  */
  25 /*
  26  * Copyright (c) 1993
  27  *      The Regents of the University of California.  All rights reserved.
  28  *
  29  * Redistribution and use in source and binary forms, with or without
  30  * modification, are permitted provided that the following conditions
  31  * are met:
  32  * 1. Redistributions of source code must retain the above copyright
  33  *    notice, this list of conditions and the following disclaimer.
  34  * 2. Redistributions in binary form must reproduce the above copyright
  35  *    notice, this list of conditions and the following disclaimer in the
  36  *    documentation and/or other materials provided with the distribution.
  37  * 3. All advertising materials mentioning features or use of this software
  38  *    must display the following acknowledgement:
  39  *      This product includes software developed by the University of
  40  *      California, Berkeley and its contributors.
  41  * 4. Neither the name of the University nor the names of its contributors
  42  *    may be used to endorse or promote products derived from this software
  43  *    without specific prior written permission.
  44  *
  45  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  46  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  47  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  48  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  49  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  50  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  51  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  52  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  53  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  54  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  55  * SUCH DAMAGE.
  56  */
  57
  58
  59 #include <sys/param.h>
  60 #include <sys/sysctl.h>
  61
  62 #include <errno.h>
  63 #include <limits.h>
  64 #include <paths.h>
  65 #include <stdio.h>
  66 #include <unistd.h>
  67
  68 int
  69 sysctl(name, namelen, oldp, oldlenp, newp, newlen)
  70         int *name;
  71         u_int namelen;
  72         void *oldp, *newp;
  73         size_t *oldlenp, newlen;
  74 {
  75         if (name[0] != CTL_USER)
  76                 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
  77
  78         if (newp != NULL) {
  79                 errno = EPERM;
  80                 return (-1);
  81         }
  82         if (namelen != 2) {
  83                 errno = EINVAL;
  84                 return (-1);
  85         }
  86
  87         switch (name[1]) {
  88         case USER_CS_PATH:
  89                 if (oldp && *oldlenp < sizeof(_PATH_STDPATH))
  90                         return (ENOMEM);
  91                 *oldlenp = sizeof(_PATH_STDPATH);
  92                 if (oldp != NULL)
  93                         memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
  94                 return (0);
  95         }
  96
  97         if (oldp && *oldlenp < sizeof(int))
  98                 return (ENOMEM);
  99         *oldlenp = sizeof(int);
 100         if (oldp == NULL)
 101                 return (0);
 102
 103         switch (name[1]) {
 104         case USER_BC_BASE_MAX:
 105                 *(int *)oldp = BC_BASE_MAX;
 106                 return (0);
 107         case USER_BC_DIM_MAX:
 108                 *(int *)oldp = BC_DIM_MAX;
 109                 return (0);
 110         case USER_BC_SCALE_MAX:
 111                 *(int *)oldp = BC_SCALE_MAX;
 112                 return (0);
 113         case USER_BC_STRING_MAX:
 114                 *(int *)oldp = BC_STRING_MAX;
 115                 return (0);
 116         case USER_COLL_WEIGHTS_MAX:
 117                 *(int *)oldp = COLL_WEIGHTS_MAX;
 118                 return (0);
 119         case USER_EXPR_NEST_MAX:
 120                 *(int *)oldp = EXPR_NEST_MAX;
 121                 return (0);
 122         case USER_LINE_MAX:
 123                 *(int *)oldp = LINE_MAX;
 124                 return (0);
 125         case USER_RE_DUP_MAX:
 126                 *(int *)oldp = RE_DUP_MAX;
 127                 return (0);
 128         case USER_POSIX2_VERSION:
 129                 *(int *)oldp = _POSIX2_VERSION;
 130                 return (0);
 131         case USER_POSIX2_C_BIND:
 132 #ifdef POSIX2_C_BIND
 133                 *(int *)oldp = 1;
 134 #else
 135                 *(int *)oldp = 0;
 136 #endif
 137                 return (0);
 138         case USER_POSIX2_C_DEV:
 139 #ifdef  POSIX2_C_DEV
 140                 *(int *)oldp = 1;
 141 #else
 142                 *(int *)oldp = 0;
 143 #endif
 144                 return (0);
 145         case USER_POSIX2_CHAR_TERM:
 146 #ifdef  POSIX2_CHAR_TERM
 147                 *(int *)oldp = 1;
 148 #else
 149                 *(int *)oldp = 0;
 150 #endif
 151                 return (0);
 152         case USER_POSIX2_FORT_DEV:
 153 #ifdef  POSIX2_FORT_DEV
 154                 *(int *)oldp = 1;
 155 #else
 156                 *(int *)oldp = 0;
 157 #endif
 158                 return (0);
 159         case USER_POSIX2_FORT_RUN:
 160 #ifdef  POSIX2_FORT_RUN
 161                 *(int *)oldp = 1;
 162 #else
 163                 *(int *)oldp = 0;
 164 #endif
 165                 return (0);
 166         case USER_POSIX2_LOCALEDEF:
 167 #ifdef  POSIX2_LOCALEDEF
 168                 *(int *)oldp = 1;
 169 #else
 170                 *(int *)oldp = 0;
 171 #endif
 172                 return (0);
 173         case USER_POSIX2_SW_DEV:
 174 #ifdef  POSIX2_SW_DEV
 175                 *(int *)oldp = 1;
 176 #else
 177                 *(int *)oldp = 0;
 178 #endif
 179                 return (0);
 180         case USER_POSIX2_UPE:
 181 #ifdef  POSIX2_UPE
 182                 *(int *)oldp = 1;
 183 #else
 184                 *(int *)oldp = 0;
 185 #endif
 186                 return (0);
 187         case USER_STREAM_MAX:
 188                 *(int *)oldp = FOPEN_MAX;
 189                 return (0);
 190         case USER_TZNAME_MAX:
 191                 *(int *)oldp = NAME_MAX;
 192                 return (0);
 193         default:
 194                 errno = EINVAL;
 195                 return (-1);
 196         }
 197         /* NOTREACHED */
 198 }