The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/kern/kern_mib.c

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    1 /*-
    2  * Copyright (c) 1982, 1986, 1989, 1993
    3  *      The Regents of the University of California.  All rights reserved.
    4  *
    5  * This code is derived from software contributed to Berkeley by
    6  * Mike Karels at Berkeley Software Design, Inc.
    7  *
    8  * Quite extensively rewritten by Poul-Henning Kamp of the FreeBSD
    9  * project, to make these variables more userfriendly.
   10  *
   11  * Redistribution and use in source and binary forms, with or without
   12  * modification, are permitted provided that the following conditions
   13  * are met:
   14  * 1. Redistributions of source code must retain the above copyright
   15  *    notice, this list of conditions and the following disclaimer.
   16  * 2. Redistributions in binary form must reproduce the above copyright
   17  *    notice, this list of conditions and the following disclaimer in the
   18  *    documentation and/or other materials provided with the distribution.
   19  * 3. All advertising materials mentioning features or use of this software
   20  *    must display the following acknowledgement:
   21  *      This product includes software developed by the University of
   22  *      California, Berkeley and its contributors.
   23  * 4. Neither the name of the University nor the names of its contributors
   24  *    may be used to endorse or promote products derived from this software
   25  *    without specific prior written permission.
   26  *
   27  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
   28  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
   29  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
   30  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
   31  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
   32  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
   33  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   34  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   35  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
   36  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
   37  * SUCH DAMAGE.
   38  *
   39  *      @(#)kern_sysctl.c       8.4 (Berkeley) 4/14/94
   40  * $FreeBSD: src/sys/kern/kern_mib.c,v 1.4.2.4 1999/09/05 08:14:58 peter Exp $
   41  */
   42 
   43 #include <sys/param.h>
   44 #include <sys/kernel.h>
   45 #include <sys/systm.h>
   46 #include <sys/sysctl.h>
   47 #include <sys/proc.h>
   48 #include <sys/unistd.h>
   49 
   50 #include <machine/cpu.h>
   51 
   52 SYSCTL_NODE(, 0,          sysctl, CTLFLAG_RW, 0,
   53         "Sysctl internal magic");
   54 SYSCTL_NODE(, CTL_KERN,   kern,   CTLFLAG_RW, 0,
   55         "High kernel, proc, limits &c");
   56 SYSCTL_NODE(, CTL_VM,     vm,     CTLFLAG_RW, 0,
   57         "Virtual memory");
   58 SYSCTL_NODE(, CTL_VFS,    vfs,     CTLFLAG_RW, 0,
   59         "File system");
   60 SYSCTL_NODE(, CTL_NET,    net,    CTLFLAG_RW, 0,
   61         "Network, (see socket.h)");
   62 SYSCTL_NODE(, CTL_DEBUG,  debug,  CTLFLAG_RW, 0,
   63         "Debugging");
   64 SYSCTL_NODE(, CTL_HW,     hw,     CTLFLAG_RW, 0,
   65         "hardware");
   66 SYSCTL_NODE(, CTL_MACHDEP, machdep, CTLFLAG_RW, 0,
   67         "machine dependent");
   68 SYSCTL_NODE(, CTL_USER,   user,   CTLFLAG_RW, 0,
   69         "user-level");
   70 
   71 SYSCTL_STRING(_kern, KERN_OSRELEASE, osrelease, CTLFLAG_RD, osrelease, 0, "");
   72 
   73 SYSCTL_INT(_kern, KERN_OSREV, osrevision, CTLFLAG_RD, 0, BSD, "");
   74 
   75 SYSCTL_STRING(_kern, KERN_VERSION, version, CTLFLAG_RD, version, 0, "");
   76 
   77 SYSCTL_STRING(_kern, KERN_OSTYPE, ostype, CTLFLAG_RD, ostype, 0, "");
   78 
   79 extern int osreldate;
   80 SYSCTL_INT(_kern, KERN_OSRELDATE, osreldate, CTLFLAG_RD, &osreldate, 0, "");
   81 
   82 SYSCTL_INT(_kern, KERN_MAXPROC, maxproc, CTLFLAG_RD, &maxproc, 0, "");
   83 
   84 SYSCTL_INT(_kern, KERN_MAXPROCPERUID, maxprocperuid,
   85         CTLFLAG_RW, &maxprocperuid, 0, "");
   86 
   87 SYSCTL_INT(_kern, KERN_ARGMAX, argmax, CTLFLAG_RD, 0, ARG_MAX, "");
   88 
   89 SYSCTL_INT(_kern, KERN_POSIX1, posix1version, CTLFLAG_RD, 0, _POSIX_VERSION, "");
   90 
   91 SYSCTL_INT(_kern, KERN_NGROUPS, ngroups, CTLFLAG_RD, 0, NGROUPS_MAX, "");
   92 
   93 SYSCTL_INT(_kern, KERN_JOB_CONTROL, job_control, CTLFLAG_RD, 0, 1, "");
   94 
   95 #ifdef _POSIX_SAVED_IDS
   96 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 0, 1, "");
   97 #else
   98 SYSCTL_INT(_kern, KERN_SAVED_IDS, saved_ids, CTLFLAG_RD, 0, 0, "");
   99 #endif
  100 
  101 char kernelname[MAXPATHLEN] = "/kernel";        /* XXX bloat */
  102 
  103 SYSCTL_STRING(_kern, KERN_BOOTFILE, bootfile,
  104         CTLFLAG_RW, kernelname, sizeof kernelname, "");
  105 
  106 SYSCTL_INT(_hw, HW_NCPU, ncpu, CTLFLAG_RD, 0, 1, "");
  107 
  108 SYSCTL_INT(_hw, HW_BYTEORDER, byteorder, CTLFLAG_RD, 0, BYTE_ORDER, "");
  109 
  110 SYSCTL_INT(_hw, HW_PAGESIZE, pagesize, CTLFLAG_RD, 0, PAGE_SIZE, "");
  111 
  112 static char     machine_arch[] = MACHINE_ARCH;
  113 SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
  114                           machine_arch, 0, "");
  115 
  116 char hostname[MAXHOSTNAMELEN];
  117 
  118 SYSCTL_STRING(_kern, KERN_HOSTNAME, hostname, CTLFLAG_RW,
  119         hostname, sizeof(hostname), "");
  120 
  121 int securelevel = -1;
  122 
  123 static int
  124 sysctl_kern_securelvl SYSCTL_HANDLER_ARGS
  125 {
  126                 int error, level;
  127 
  128                 level = securelevel;
  129                 error = sysctl_handle_int(oidp, &level, 0, req);
  130                 if (error || !req->newptr)
  131                         return (error);
  132                 if (level < securelevel)
  133                         return (EPERM);
  134                 securelevel = level;
  135                 return (error);
  136 }
  137 
  138 SYSCTL_PROC(_kern, KERN_SECURELVL, securelevel, CTLTYPE_INT|CTLFLAG_RW,
  139         0, 0, sysctl_kern_securelvl, "I", "");
  140 
  141 char domainname[MAXHOSTNAMELEN];
  142 SYSCTL_STRING(_kern, KERN_NISDOMAINNAME, domainname, CTLFLAG_RW,
  143         &domainname, sizeof(domainname), "");
  144 
  145 long hostid;
  146 /* Some trouble here, if sizeof (int) != sizeof (long) */
  147 SYSCTL_INT(_kern, KERN_HOSTID, hostid, CTLFLAG_RW, &hostid, 0, "");
  148 
  149 /*
  150  * This is really cheating.  These actually live in the libc, something
  151  * which I'm not quite sure is a good idea anyway, but in order for 
  152  * getnext and friends to actually work, we define dummies here.
  153  */
  154 SYSCTL_STRING(_user, USER_CS_PATH, cs_path, CTLFLAG_RD, "", 0, "");
  155 SYSCTL_INT(_user, USER_BC_BASE_MAX, bc_base_max, CTLFLAG_RD, 0, 0, "");
  156 SYSCTL_INT(_user, USER_BC_DIM_MAX, bc_dim_max, CTLFLAG_RD, 0, 0, "");
  157 SYSCTL_INT(_user, USER_BC_SCALE_MAX, bc_scale_max, CTLFLAG_RD, 0, 0, "");
  158 SYSCTL_INT(_user, USER_BC_STRING_MAX, bc_string_max, CTLFLAG_RD, 0, 0, "");
  159 SYSCTL_INT(_user, USER_COLL_WEIGHTS_MAX, coll_weights_max, CTLFLAG_RD, 0, 0, "");
  160 SYSCTL_INT(_user, USER_EXPR_NEST_MAX, expr_nest_max, CTLFLAG_RD, 0, 0, "");
  161 SYSCTL_INT(_user, USER_LINE_MAX, line_max, CTLFLAG_RD, 0, 0, "");
  162 SYSCTL_INT(_user, USER_RE_DUP_MAX, re_dup_max, CTLFLAG_RD, 0, 0, "");
  163 SYSCTL_INT(_user, USER_POSIX2_VERSION, posix2_version, CTLFLAG_RD, 0, 0, "");
  164 SYSCTL_INT(_user, USER_POSIX2_C_BIND, posix2_c_bind, CTLFLAG_RD, 0, 0, "");
  165 SYSCTL_INT(_user, USER_POSIX2_C_DEV, posix2_c_dev, CTLFLAG_RD, 0, 0, "");
  166 SYSCTL_INT(_user, USER_POSIX2_CHAR_TERM, posix2_char_term, CTLFLAG_RD, 0, 0, "");
  167 SYSCTL_INT(_user, USER_POSIX2_FORT_DEV, posix2_fort_dev, CTLFLAG_RD, 0, 0, "");
  168 SYSCTL_INT(_user, USER_POSIX2_FORT_RUN, posix2_fort_run, CTLFLAG_RD, 0, 0, "");
  169 SYSCTL_INT(_user, USER_POSIX2_LOCALEDEF, posix2_localedef, CTLFLAG_RD, 0, 0, "");
  170 SYSCTL_INT(_user, USER_POSIX2_SW_DEV, posix2_sw_dev, CTLFLAG_RD, 0, 0, "");
  171 SYSCTL_INT(_user, USER_POSIX2_UPE, posix2_upe, CTLFLAG_RD, 0, 0, "");
  172 SYSCTL_INT(_user, USER_STREAM_MAX, stream_max, CTLFLAG_RD, 0, 0, "");
  173 SYSCTL_INT(_user, USER_TZNAME_MAX, tzname_max, CTLFLAG_RD, 0, 0, "");

Cache object: 2fe00c0b6ffb390b38b3f71eb15fff23

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