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. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  *      @(#)kern_xxx.c  8.2 (Berkeley) 11/14/93
  30  * $FreeBSD: src/sys/kern/kern_xxx.c,v 1.31 1999/08/28 00:46:15 peter Exp $
  31  * $DragonFly: src/sys/kern/kern_xxx.c,v 1.10 2006/06/05 07:26:10 dillon Exp $
  32  */
  33
  34 #include <sys/param.h>
  35 #include <sys/systm.h>
  36 #include <sys/sysproto.h>
  37 #include <sys/kernel.h>
  38 #include <sys/proc.h>
  39 #include <sys/priv.h>
  40 #include <sys/sysctl.h>
  41 #include <sys/utsname.h>
  42
  43 struct lwkt_token domain_token = LWKT_TOKEN_INITIALIZER(domain_token);
  44
  45 int
  46 sys_uname(struct uname_args *uap)
  47 {
  48         int name[2], rtval;
  49         size_t len;
  50         char *s, *us;
  51
  52         name[0] = CTL_KERN;
  53         name[1] = KERN_OSTYPE;
  54         len = sizeof uap->name->sysname;
  55         rtval = userland_sysctl(name, 2, uap->name->sysname, &len,
  56                                 1, 0, 0, 0);
  57         if (rtval)
  58                 goto done;
  59         subyte(uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
  60
  61         name[1] = KERN_HOSTNAME;
  62         len = sizeof uap->name->nodename;
  63         rtval = userland_sysctl(name, 2, uap->name->nodename, &len,
  64                                 1, 0, 0, 0);
  65         if (rtval)
  66                 goto done;
  67         subyte(uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
  68
  69         name[1] = KERN_OSRELEASE;
  70         len = sizeof uap->name->release;
  71         rtval = userland_sysctl(name, 2, uap->name->release, &len,
  72                                 1, 0, 0, 0);
  73         if (rtval)
  74                 goto done;
  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)
  83                 goto done;
  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                         goto done;
  96         }
  97         rtval = subyte( us++, 0);
  98         if (rtval)
  99                 goto done;
 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)
 107                 goto done;
 108         rtval = subyte(uap->name->machine + sizeof(uap->name->machine) - 1, 0);
 109 done:
 110         return rtval;
 111 }
 112
 113 int
 114 sys_getdomainname(struct getdomainname_args *uap)
 115 {
 116         int domainnamelen;
 117         int error;
 118
 119         lwkt_gettoken_shared(&domain_token);
 120         domainnamelen = strlen(domainname) + 1;
 121         if ((u_int)uap->len > domainnamelen + 1)
 122                 uap->len = domainnamelen + 1;
 123         error = copyout(domainname, uap->domainname, uap->len);
 124         lwkt_reltoken(&domain_token);
 125         return (error);
 126 }
 127
 128 int
 129 sys_setdomainname(struct setdomainname_args *uap)
 130 {
 131         struct thread *td = curthread;
 132         int error, domainnamelen;
 133
 134         if ((error = priv_check(td, PRIV_SETDOMAINNAME)))
 135                 return (error);
 136         if ((u_int)uap->len > sizeof(domainname) - 1)
 137                 return EINVAL;
 138         lwkt_gettoken(&domain_token);
 139
 140         domainnamelen = uap->len;
 141         error = copyin(uap->domainname, domainname, uap->len);
 142         domainname[domainnamelen] = 0;
 143
 144         lwkt_reltoken(&domain_token);
 145         return (error);
 146 }