sys/kern/kern_xxx.c

   1 /*
   2  * Copyright (c) 1982, 1986, 1989, 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  *      @(#)kern_xxx.c  8.2 (Berkeley) 11/14/93
  34  * $FreeBSD: src/sys/kern/kern_xxx.c,v 1.31 1999/08/28 00:46:15 peter Exp $
  35  * $DragonFly: src/sys/kern/kern_xxx.c,v 1.10 2006/06/05 07:26:10 dillon Exp $
  36  */
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/sysproto.h>
  41 #include <sys/kernel.h>
  42 #include <sys/proc.h>
  43 #include <sys/priv.h>
  44 #include <sys/sysctl.h>
  45 #include <sys/utsname.h>
  46
  47 /* ARGSUSED */
  48 /* MP SAFE */
  49 int
  50 sys_uname(struct uname_args *uap)
  51 {
  52         int name[2], rtval;
  53         size_t len;
  54         char *s, *us;
  55
  56         name[0] = CTL_KERN;
  57         name[1] = KERN_OSTYPE;
  58         len = sizeof uap->name->sysname;
  59         rtval = userland_sysctl(name, 2, uap->name->sysname, &len,
  60                 1, 0, 0, 0);
  61         if( rtval) return rtval;
  62         subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
  63
  64         name[1] = KERN_HOSTNAME;
  65         len = sizeof uap->name->nodename;
  66         rtval = userland_sysctl(name, 2, uap->name->nodename, &len,
  67                 1, 0, 0, 0);
  68         if( rtval) return rtval;
  69         subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
  70
  71         name[1] = KERN_OSRELEASE;
  72         len = sizeof uap->name->release;
  73         rtval = userland_sysctl(name, 2, uap->name->release, &len,
  74                 1, 0, 0, 0);
  75         if( rtval) return rtval;
  76         subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
  77
  78 /*
  79         name = KERN_VERSION;
  80         len = sizeof uap->name->version;
  81         rtval = userland_sysctl(name, 2, uap->name->version, &len,
  82                 1, 0, 0, 0);
  83         if( rtval) return rtval;
  84         subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
  85 */
  86
  87 /*
  88  * this stupid hackery to make the version field look like FreeBSD 1.1
  89  */
  90         for(s = version; *s && *s != '#'; s++);
  91
  92         for(us = uap->name->version; *s && *s != ':'; s++) {
  93                 rtval = subyte( us++, *s);
  94                 if( rtval)
  95                         return rtval;
  96         }
  97         rtval = subyte( us++, 0);
  98         if( rtval)
  99                 return rtval;
 100
 101         name[0] = CTL_HW;
 102         name[1] = HW_MACHINE;
 103         len = sizeof uap->name->machine;
 104         rtval = userland_sysctl(name, 2, uap->name->machine, &len,
 105                 1, 0, 0, 0);
 106         if( rtval) return rtval;
 107         subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
 108
 109         return 0;
 110 }
 111
 112 /* ARGSUSED */
 113 int
 114 sys_getdomainname(struct getdomainname_args *uap)
 115 {
 116         int domainnamelen = strlen(domainname) + 1;
 117         if ((u_int)uap->len > domainnamelen + 1)
 118                 uap->len = domainnamelen + 1;
 119         return (copyout((caddr_t)domainname, (caddr_t)uap->domainname, uap->len));
 120 }
 121
 122 /* ARGSUSED */
 123 int
 124 sys_setdomainname(struct setdomainname_args *uap)
 125 {
 126         struct thread *td = curthread;
 127         int error, domainnamelen;
 128
 129         if ((error = priv_check(td, PRIV_ROOT)))
 130                 return (error);
 131         if ((u_int)uap->len > sizeof (domainname) - 1)
 132                 return EINVAL;
 133         domainnamelen = uap->len;
 134         error = copyin((caddr_t)uap->domainname, domainname, uap->len);
 135         domainname[domainnamelen] = 0;
 136         return (error);
 137 }
 138