gen.subproj/sysctl.c

   1 /*
   2  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
   3  *
   4  * @APPLE_LICENSE_HEADER_START@
   5  *
   6  * The contents of this file constitute Original Code as defined in and
   7  * are subject to the Apple Public Source License Version 1.1 (the
   8  * "License").  You may not use this file except in compliance with the
   9  * License.  Please obtain a copy of the License at
  10  * http://www.apple.com/publicsource and read it before using this file.
  11  *
  12  * This Original Code and all software distributed under the License are
  13  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  14  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  15  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
  17  * License for the specific language governing rights and limitations
  18  * under the License.
  19  *
  20  * @APPLE_LICENSE_HEADER_END@
  21  */
  22 /*
  23  * Copyright (c) 1993
  24  *      The Regents of the University of California.  All rights reserved.
  25  *
  26  * Redistribution and use in source and binary forms, with or without
  27  * modification, are permitted provided that the following conditions
  28  * are met:
  29  * 1. Redistributions of source code must retain the above copyright
  30  *    notice, this list of conditions and the following disclaimer.
  31  * 2. Redistributions in binary form must reproduce the above copyright
  32  *    notice, this list of conditions and the following disclaimer in the
  33  *    documentation and/or other materials provided with the distribution.
  34  * 3. All advertising materials mentioning features or use of this software
  35  *    must display the following acknowledgement:
  36  *      This product includes software developed by the University of
  37  *      California, Berkeley and its contributors.
  38  * 4. Neither the name of the University nor the names of its contributors
  39  *    may be used to endorse or promote products derived from this software
  40  *    without specific prior written permission.
  41  *
  42  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  43  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  44  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  45  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  46  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  47  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  48  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  49  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  50  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  51  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  52  * SUCH DAMAGE.
  53  */
  54
  55
  56 #include <sys/param.h>
  57 #include <sys/sysctl.h>
  58
  59 #include <errno.h>
  60 #include <limits.h>
  61 #include <paths.h>
  62 #include <stdio.h>
  63 #include <unistd.h>
  64
  65 int
  66 sysctl(name, namelen, oldp, oldlenp, newp, newlen)
  67         int *name;
  68         u_int namelen;
  69         void *oldp, *newp;
  70         size_t *oldlenp, newlen;
  71 {
  72         if (name[0] != CTL_USER)
  73                 return (__sysctl(name, namelen, oldp, oldlenp, newp, newlen));
  74
  75         if (newp != NULL) {
  76                 errno = EPERM;
  77                 return (-1);
  78         }
  79         if (namelen != 2) {
  80                 errno = EINVAL;
  81                 return (-1);
  82         }
  83
  84         switch (name[1]) {
  85         case USER_CS_PATH:
  86                 if (oldp && *oldlenp < sizeof(_PATH_STDPATH))
  87                         return (ENOMEM);
  88                 *oldlenp = sizeof(_PATH_STDPATH);
  89                 if (oldp != NULL)
  90                         memmove(oldp, _PATH_STDPATH, sizeof(_PATH_STDPATH));
  91                 return (0);
  92         }
  93
  94         if (oldp && *oldlenp < sizeof(int))
  95                 return (ENOMEM);
  96         *oldlenp = sizeof(int);
  97         if (oldp == NULL)
  98                 return (0);
  99
 100         switch (name[1]) {
 101         case USER_BC_BASE_MAX:
 102                 *(int *)oldp = BC_BASE_MAX;
 103                 return (0);
 104         case USER_BC_DIM_MAX:
 105                 *(int *)oldp = BC_DIM_MAX;
 106                 return (0);
 107         case USER_BC_SCALE_MAX:
 108                 *(int *)oldp = BC_SCALE_MAX;
 109                 return (0);
 110         case USER_BC_STRING_MAX:
 111                 *(int *)oldp = BC_STRING_MAX;
 112                 return (0);
 113         case USER_COLL_WEIGHTS_MAX:
 114                 *(int *)oldp = COLL_WEIGHTS_MAX;
 115                 return (0);
 116         case USER_EXPR_NEST_MAX:
 117                 *(int *)oldp = EXPR_NEST_MAX;
 118                 return (0);
 119         case USER_LINE_MAX:
 120                 *(int *)oldp = LINE_MAX;
 121                 return (0);
 122         case USER_RE_DUP_MAX:
 123                 *(int *)oldp = RE_DUP_MAX;
 124                 return (0);
 125         case USER_POSIX2_VERSION:
 126                 *(int *)oldp = _POSIX2_VERSION;
 127                 return (0);
 128         case USER_POSIX2_C_BIND:
 129 #ifdef POSIX2_C_BIND
 130                 *(int *)oldp = 1;
 131 #else
 132                 *(int *)oldp = 0;
 133 #endif
 134                 return (0);
 135         case USER_POSIX2_C_DEV:
 136 #ifdef  POSIX2_C_DEV
 137                 *(int *)oldp = 1;
 138 #else
 139                 *(int *)oldp = 0;
 140 #endif
 141                 return (0);
 142         case USER_POSIX2_CHAR_TERM:
 143 #ifdef  POSIX2_CHAR_TERM
 144                 *(int *)oldp = 1;
 145 #else
 146                 *(int *)oldp = 0;
 147 #endif
 148                 return (0);
 149         case USER_POSIX2_FORT_DEV:
 150 #ifdef  POSIX2_FORT_DEV
 151                 *(int *)oldp = 1;
 152 #else
 153                 *(int *)oldp = 0;
 154 #endif
 155                 return (0);
 156         case USER_POSIX2_FORT_RUN:
 157 #ifdef  POSIX2_FORT_RUN
 158                 *(int *)oldp = 1;
 159 #else
 160                 *(int *)oldp = 0;
 161 #endif
 162                 return (0);
 163         case USER_POSIX2_LOCALEDEF:
 164 #ifdef  POSIX2_LOCALEDEF
 165                 *(int *)oldp = 1;
 166 #else
 167                 *(int *)oldp = 0;
 168 #endif
 169                 return (0);
 170         case USER_POSIX2_SW_DEV:
 171 #ifdef  POSIX2_SW_DEV
 172                 *(int *)oldp = 1;
 173 #else
 174                 *(int *)oldp = 0;
 175 #endif
 176                 return (0);
 177         case USER_POSIX2_UPE:
 178 #ifdef  POSIX2_UPE
 179                 *(int *)oldp = 1;
 180 #else
 181                 *(int *)oldp = 0;
 182 #endif
 183                 return (0);
 184         case USER_STREAM_MAX:
 185                 *(int *)oldp = FOPEN_MAX;
 186                 return (0);
 187         case USER_TZNAME_MAX:
 188                 *(int *)oldp = NAME_MAX;
 189                 return (0);
 190         default:
 191                 errno = EINVAL;
 192                 return (-1);
 193         }
 194         /* NOTREACHED */
 195 }