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/sysctl.h>
  44 #include <sys/utsname.h>
  45
  46 /* ARGSUSED */
  47 /* MP SAFE */
  48 int
  49 sys_uname(struct uname_args *uap)
  50 {
  51         int name[2], rtval;
  52         size_t len;
  53         char *s, *us;
  54
  55         name[0] = CTL_KERN;
  56         name[1] = KERN_OSTYPE;
  57         len = sizeof uap->name->sysname;
  58         rtval = userland_sysctl(name, 2, uap->name->sysname, &len,
  59                 1, 0, 0, 0);
  60         if( rtval) return rtval;
  61         subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
  62
  63         name[1] = KERN_HOSTNAME;
  64         len = sizeof uap->name->nodename;
  65         rtval = userland_sysctl(name, 2, uap->name->nodename, &len,
  66                 1, 0, 0, 0);
  67         if( rtval) return rtval;
  68         subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
  69
  70         name[1] = KERN_OSRELEASE;
  71         len = sizeof uap->name->release;
  72         rtval = userland_sysctl(name, 2, uap->name->release, &len,
  73                 1, 0, 0, 0);
  74         if( rtval) return rtval;
  75         subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
  76
  77 /*
  78         name = KERN_VERSION;
  79         len = sizeof uap->name->version;
  80         rtval = userland_sysctl(name, 2, uap->name->version, &len,
  81                 1, 0, 0, 0);
  82         if( rtval) return rtval;
  83         subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
  84 */
  85
  86 /*
  87  * this stupid hackery to make the version field look like FreeBSD 1.1
  88  */
  89         for(s = version; *s && *s != '#'; s++);
  90
  91         for(us = uap->name->version; *s && *s != ':'; s++) {
  92                 rtval = subyte( us++, *s);
  93                 if( rtval)
  94                         return rtval;
  95         }
  96         rtval = subyte( us++, 0);
  97         if( rtval)
  98                 return rtval;
  99
 100         name[0] = CTL_HW;
 101         name[1] = HW_MACHINE;
 102         len = sizeof uap->name->machine;
 103         rtval = userland_sysctl(name, 2, uap->name->machine, &len,
 104                 1, 0, 0, 0);
 105         if( rtval) return rtval;
 106         subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
 107
 108         return 0;
 109 }
 110
 111 /* ARGSUSED */
 112 int
 113 sys_getdomainname(struct getdomainname_args *uap)
 114 {
 115         int domainnamelen = strlen(domainname) + 1;
 116         if ((u_int)uap->len > domainnamelen + 1)
 117                 uap->len = domainnamelen + 1;
 118         return (copyout((caddr_t)domainname, (caddr_t)uap->domainname, uap->len));
 119 }
 120
 121 /* ARGSUSED */
 122 int
 123 sys_setdomainname(struct setdomainname_args *uap)
 124 {
 125         struct thread *td = curthread;
 126         int error, domainnamelen;
 127
 128         if ((error = suser(td)))
 129                 return (error);
 130         if ((u_int)uap->len > sizeof (domainname) - 1)
 131                 return EINVAL;
 132         domainnamelen = uap->len;
 133         error = copyin((caddr_t)uap->domainname, domainname, uap->len);
 134         domainname[domainnamelen] = 0;
 135         return (error);
 136 }
 137