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_xxx.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  * 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 1.23.2.1 1999/09/05 08:15:08 peter Exp $
   35  */
   36 
   37 #include <sys/param.h>
   38 #include <sys/systm.h>
   39 #include <sys/sysproto.h>
   40 #include <sys/kernel.h>
   41 #include <sys/proc.h>
   42 #include <sys/sysctl.h>
   43 #include <sys/utsname.h>
   44 
   45 
   46 #if defined(COMPAT_43) || defined(COMPAT_SUNOS)
   47 
   48 #ifndef _SYS_SYSPROTO_H_
   49 struct gethostname_args {
   50         char    *hostname;
   51         u_int   len;
   52 };
   53 #endif
   54 /* ARGSUSED */
   55 int
   56 ogethostname(p, uap, retval)
   57         struct proc *p;
   58         struct gethostname_args *uap;
   59         int *retval;
   60 {
   61         int name[2];
   62 
   63         name[0] = CTL_KERN;
   64         name[1] = KERN_HOSTNAME;
   65         return (userland_sysctl(p, name, 2, uap->hostname, &uap->len, 
   66                 1, 0, 0, 0));
   67 }
   68 
   69 #ifndef _SYS_SYSPROTO_H_
   70 struct sethostname_args {
   71         char    *hostname;
   72         u_int   len;
   73 };
   74 #endif
   75 /* ARGSUSED */
   76 int
   77 osethostname(p, uap, retval)
   78         struct proc *p;
   79         register struct sethostname_args *uap;
   80         int *retval;
   81 {
   82         int name[2];
   83         int error;
   84 
   85         name[0] = CTL_KERN;
   86         name[1] = KERN_HOSTNAME;
   87         if ((error = suser(p->p_ucred, &p->p_acflag)))
   88                 return (error);
   89         return (userland_sysctl(p, name, 2, 0, 0, 0,
   90                 uap->hostname, uap->len, 0));
   91 }
   92 
   93 #ifndef _SYS_SYSPROTO_H_
   94 struct ogethostid_args {
   95         int     dummy;
   96 };
   97 #endif
   98 /* ARGSUSED */
   99 int
  100 ogethostid(p, uap, retval)
  101         struct proc *p;
  102         struct ogethostid_args *uap;
  103         int *retval;
  104 {
  105 
  106         *(long *)retval = hostid;
  107         return (0);
  108 }
  109 #endif /* COMPAT_43 || COMPAT_SUNOS */
  110 
  111 #ifdef COMPAT_43
  112 #ifndef _SYS_SYSPROTO_H_
  113 struct osethostid_args {
  114         long    hostid;
  115 };
  116 #endif
  117 /* ARGSUSED */
  118 int
  119 osethostid(p, uap, retval)
  120         struct proc *p;
  121         struct osethostid_args *uap;
  122         int *retval;
  123 {
  124         int error;
  125 
  126         if ((error = suser(p->p_ucred, &p->p_acflag)))
  127                 return (error);
  128         hostid = uap->hostid;
  129         return (0);
  130 }
  131 
  132 int
  133 oquota(p, uap, retval)
  134         struct proc *p;
  135         struct oquota_args *uap;
  136         int *retval;
  137 {
  138 
  139         return (ENOSYS);
  140 }
  141 #endif /* COMPAT_43 */
  142 
  143 #ifndef _SYS_SYSPROTO_H_
  144 struct uname_args {
  145         struct utsname  *name;
  146 };
  147 #endif
  148 
  149 /* ARGSUSED */
  150 int
  151 uname(p, uap, retval)
  152         struct proc *p;
  153         struct uname_args *uap;
  154         int *retval;
  155 {
  156         int name[2], len, rtval;
  157         char *s, *us;
  158 
  159         name[0] = CTL_KERN;
  160         name[1] = KERN_OSTYPE;
  161         len = sizeof uap->name->sysname;
  162         rtval = userland_sysctl(p, name, 2, uap->name->sysname, &len, 
  163                 1, 0, 0, 0);
  164         if( rtval) return rtval;
  165         subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
  166 
  167         name[1] = KERN_HOSTNAME;
  168         len = sizeof uap->name->nodename;
  169         rtval = userland_sysctl(p, name, 2, uap->name->nodename, &len, 
  170                 1, 0, 0, 0);
  171         if( rtval) return rtval;
  172         subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
  173 
  174         name[1] = KERN_OSRELEASE;
  175         len = sizeof uap->name->release;
  176         rtval = userland_sysctl(p, name, 2, uap->name->release, &len, 
  177                 1, 0, 0, 0);
  178         if( rtval) return rtval;
  179         subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
  180 
  181 /*
  182         name = KERN_VERSION;
  183         len = sizeof uap->name->version;
  184         rtval = userland_sysctl(p, name, 2, uap->name->version, &len, 
  185                 1, 0, 0, 0);
  186         if( rtval) return rtval;
  187         subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
  188 */
  189 
  190 /*
  191  * this stupid hackery to make the version field look like FreeBSD 1.1
  192  */
  193         for(s = version; *s && *s != '#'; s++);
  194 
  195         for(us = uap->name->version; *s && *s != ':'; s++) {
  196                 rtval = subyte( us++, *s);
  197                 if( rtval)
  198                         return rtval;
  199         }
  200         rtval = subyte( us++, 0);
  201         if( rtval)
  202                 return rtval;
  203 
  204         name[1] = HW_MACHINE;
  205         len = sizeof uap->name->machine;
  206         rtval = userland_sysctl(p, name, 2, uap->name->machine, &len, 
  207                 1, 0, 0, 0);
  208         if( rtval) return rtval;
  209         subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
  210 
  211         return 0;
  212 }
  213 
  214 #ifndef _SYS_SYSPROTO_H_
  215 struct getdomainname_args {
  216         char    *domainname;
  217         int     len;
  218 };
  219 #endif
  220 
  221 /* ARGSUSED */
  222 int
  223 getdomainname(p, uap, retval)
  224         struct proc *p;
  225         struct getdomainname_args *uap;
  226         int *retval;
  227 {
  228         int domainnamelen = strlen(domainname) + 1;
  229         if ((u_int)uap->len > domainnamelen + 1)
  230                 uap->len = domainnamelen + 1;
  231         return (copyout((caddr_t)domainname, (caddr_t)uap->domainname, uap->len));
  232 }
  233 
  234 #ifndef _SYS_SYSPROTO_H_
  235 struct setdomainname_args {
  236         char    *domainname;
  237         int     len;
  238 };
  239 #endif
  240 
  241 /* ARGSUSED */
  242 int
  243 setdomainname(p, uap, retval)
  244         struct proc *p;
  245         struct setdomainname_args *uap;
  246         int *retval;
  247 {
  248         int error, domainnamelen;
  249 
  250         if ((error = suser(p->p_ucred, &p->p_acflag)))
  251                 return (error);
  252         if ((u_int)uap->len > sizeof (domainname) - 1)
  253                 return EINVAL;
  254         domainnamelen = uap->len;
  255         error = copyin((caddr_t)uap->domainname, domainname, uap->len);
  256         domainname[domainnamelen] = 0;
  257         return (error);
  258 }
  259 

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