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 #include <sys/mplock2.h>
  48
  49 /*
  50  * MPALMOSTSAFE
  51  */
  52 int
  53 sys_uname(struct uname_args *uap)
  54 {
  55         int name[2], rtval;
  56         size_t len;
  57         char *s, *us;
  58
  59         get_mplock();
  60
  61         name[0] = CTL_KERN;
  62         name[1] = KERN_OSTYPE;
  63         len = sizeof uap->name->sysname;
  64         rtval = userland_sysctl(name, 2, uap->name->sysname, &len,
  65                 1, 0, 0, 0);
  66         if (rtval)
  67                 goto done;
  68         subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
  69
  70         name[1] = KERN_HOSTNAME;
  71         len = sizeof uap->name->nodename;
  72         rtval = userland_sysctl(name, 2, uap->name->nodename, &len,
  73                 1, 0, 0, 0);
  74         if (rtval)
  75                 goto done;
  76         subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
  77
  78         name[1] = KERN_OSRELEASE;
  79         len = sizeof uap->name->release;
  80         rtval = userland_sysctl(name, 2, uap->name->release, &len,
  81                 1, 0, 0, 0);
  82         if (rtval)
  83                 goto done;
  84         subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
  85
  86 /*
  87         name = KERN_VERSION;
  88         len = sizeof uap->name->version;
  89         rtval = userland_sysctl(name, 2, uap->name->version, &len,
  90                 1, 0, 0, 0);
  91         if (rtval)
  92                 goto done;
  93         subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
  94 */
  95
  96 /*
  97  * this stupid hackery to make the version field look like FreeBSD 1.1
  98  */
  99         for(s = version; *s && *s != '#'; s++);
 100
 101         for(us = uap->name->version; *s && *s != ':'; s++) {
 102                 rtval = subyte( us++, *s);
 103                 if (rtval)
 104                         goto done;
 105         }
 106         rtval = subyte( us++, 0);
 107         if (rtval)
 108                 goto done;
 109
 110         name[0] = CTL_HW;
 111         name[1] = HW_MACHINE;
 112         len = sizeof uap->name->machine;
 113         rtval = userland_sysctl(name, 2, uap->name->machine, &len,
 114                 1, 0, 0, 0);
 115         if (rtval)
 116                 goto done;
 117         rtval = subyte(uap->name->machine + sizeof(uap->name->machine) - 1, 0);
 118 done:
 119         rel_mplock();
 120         return rtval;
 121 }
 122
 123 /*
 124  * MPALMOSTSAFE
 125  */
 126 int
 127 sys_getdomainname(struct getdomainname_args *uap)
 128 {
 129         int domainnamelen;
 130         int error;
 131
 132         get_mplock();
 133         domainnamelen = strlen(domainname) + 1;
 134         if ((u_int)uap->len > domainnamelen + 1)
 135                 uap->len = domainnamelen + 1;
 136         error = copyout(domainname, uap->domainname, uap->len);
 137         rel_mplock();
 138         return (error);
 139 }
 140
 141 /*
 142  * MPALMOSTSAFE
 143  */
 144 int
 145 sys_setdomainname(struct setdomainname_args *uap)
 146 {
 147         struct thread *td = curthread;
 148         int error, domainnamelen;
 149
 150         if ((error = priv_check(td, PRIV_SETDOMAINNAME)))
 151                 return (error);
 152         if ((u_int)uap->len > sizeof(domainname) - 1)
 153                 return EINVAL;
 154         get_mplock();
 155         domainnamelen = uap->len;
 156         error = copyin(uap->domainname, domainname, uap->len);
 157         domainname[domainnamelen] = 0;
 158         rel_mplock();
 159         return (error);
 160 }
 161