# 2.11BSD#431 - /usr/src/lib/libc/gen/sysctl.c

##### Functions

    sysctl            X

       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	8.2.2 (2.11BSD GTE) 1996/11/27";
      36: #endif /* LIBC_SCCS and not lint */
      37:
      38: #include <sys/param.h>
      39: #include <sys/sysctl.h>
      40: #include <errno.h>
      41: #include <paths.h>
      42:
      43: extern  int errno;
      44: static
      45: char _PATH_STDPATH[]="/usr/bin:/bin:/usr/ucb:/sbin:/usr/sbin:/usr/local:/usr/new";
      46:
      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: /*
      68:  * This idea behind this section is silly.  Other than 'bc' who cares about
      69:  * half of these?  A 3/4 hearted attempt is made however to return numbers
      70:  * that are not totally bogus.
      71:  *
      72:  * Rather than port over the raft of include files with the attendant plethora
      73:  * of #define statements we just plug in the numbers from 4.4-Lite.
      74:  */
      75:
      76:     switch (name[1]) {
      77:     case USER_CS_PATH:
      78:         if (oldp && *oldlenp < sizeof(_PATH_STDPATH))
      79:             return (ENOMEM);
      80:         *oldlenp = sizeof(_PATH_STDPATH);
      81:         if (oldp != NULL)
      82:             strcpy(oldp, _PATH_STDPATH);
      83:         return (0);
      84:     }
      85:
      86:     if (oldp && *oldlenp < sizeof(int))
      87:         return (ENOMEM);
      88:     *oldlenp = sizeof(int);
      89:     if (oldp == NULL)
      90:         return (0);
      91:
      92:     switch (name[1]) {
      93:     case USER_BC_BASE_MAX:
      94:     case USER_BC_SCALE_MAX:
      95:         *(int *)oldp = 99;
      96:         return (0);
      97:     case USER_BC_DIM_MAX:
      98:         *(int *)oldp = 2048;
      99:         return (0);
     100:     case USER_BC_STRING_MAX:
     101:         *(int *)oldp = 1000;
     102:         return (0);
     103:     case USER_EXPR_NEST_MAX:
     104:         *(int *)oldp = 32;
     105:         return (0);
     106:     case USER_LINE_MAX:
     107:         *(int *)oldp = 1024;
     108:         return (0);
     109:     case USER_RE_DUP_MAX:
     110:         *(int *)oldp = 255;
     111:         return (0);
     112:     case USER_COLL_WEIGHTS_MAX:
     113:     case USER_POSIX2_VERSION:
     114:     case USER_POSIX2_C_BIND:
     115:     case USER_POSIX2_C_DEV:
     116:     case USER_POSIX2_CHAR_TERM:
     117:     case USER_POSIX2_FORT_DEV:
     118:     case USER_POSIX2_FORT_RUN:
     119:     case USER_POSIX2_LOCALEDEF:
     120:     case USER_POSIX2_SW_DEV:
     121:     case USER_POSIX2_UPE:
     122:         *(int *)oldp = 0;
     123:         return (0);
     124:     case USER_STREAM_MAX:
     125:         *(int *)oldp = 20;
     126:         return (0);
     127:     case USER_TZNAME_MAX:
     128:         *(int *)oldp = 63;
     129:         return (0);
     130:     default:
     131:         errno = EINVAL;
     132:         return (-1);
     133:     }
     134:     /* NOTREACHED */
     135: }

#### Defined functions

sysctl defined in line 48; used 35 times

- in /usr/src/bin/sysctl/sysctl.c line 343, 512
- in /usr/src/lib/libc/compat-43/gethostid.c line 51
- in /usr/src/lib/libc/compat-43/sethostid.c line 49
- in /usr/src/lib/libc/gen/gethostname.c line 51
- in /usr/src/lib/libc/gen/getloadavg.c line 61
- in /usr/src/lib/libc/gen/getpagesize.c line 50
- in /usr/src/lib/libc/gen/sethostname.c line 49
- in /usr/src/lib/libc/gen/uname.c line 55, 61, 67, 74, 87
- in /usr/src/libexec/identd/src/kernel/2.11bsd.c line 206, 212, 243, 249
- in /usr/src/local/welcome/welcome.c line 32, 40, 48
- in /usr/src/sbin/init/init.c line 240, 266
- in /usr/src/ucb/w.c line 138, 375, 391
- in /usr/src/usr.bin/prof/prof.c line 507
- in /usr/src/usr.bin/uname/uname.c line 108, 117, 126, 135, 147
- in /usr/src/usr.bin/whereis/whereis.c line 75, 85
- in /usr/src/usr.sbin/ntp/ntpd.c line 1039
- in /usr/src/usr.sbin/rwhod/rwhod.c line 330

#### Defined variables

_PATH_STDPATH defined in line 45; used 3 times

- in line 78-82(3)

sccsid defined in line 35; never used

Last modified: 1996-11-28 Generated: 2016-12-26 | Generated by src2html V0.67 page hit count: 992 |