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: stable/3/sys/kern/kern_xxx.c 50583 1999-08-29 16:33:42Z peter $
   35  */
   36 
   37 #include "opt_compat.h"
   38 
   39 #include <sys/param.h>
   40 #include <sys/systm.h>
   41 #include <sys/sysproto.h>
   42 #include <sys/kernel.h>
   43 #include <sys/proc.h>
   44 #include <sys/sysctl.h>
   45 #include <sys/utsname.h>
   46 
   47 
   48 #if defined(COMPAT_43) || defined(COMPAT_SUNOS)
   49 
   50 #ifndef _SYS_SYSPROTO_H_
   51 struct gethostname_args {
   52         char    *hostname;
   53         u_int   len;
   54 };
   55 #endif
   56 /* ARGSUSED */
   57 int
   58 ogethostname(p, uap)
   59         struct proc *p;
   60         struct gethostname_args *uap;
   61 {
   62         int name[2];
   63         size_t len = uap->len;
   64 
   65         name[0] = CTL_KERN;
   66         name[1] = KERN_HOSTNAME;
   67         return (userland_sysctl(p, name, 2, uap->hostname, &len, 
   68                 1, 0, 0, 0));
   69 }
   70 
   71 #ifndef _SYS_SYSPROTO_H_
   72 struct sethostname_args {
   73         char    *hostname;
   74         u_int   len;
   75 };
   76 #endif
   77 /* ARGSUSED */
   78 int
   79 osethostname(p, uap)
   80         struct proc *p;
   81         register struct sethostname_args *uap;
   82 {
   83         int name[2];
   84         int error;
   85 
   86         name[0] = CTL_KERN;
   87         name[1] = KERN_HOSTNAME;
   88         if ((error = suser(p->p_ucred, &p->p_acflag)))
   89                 return (error);
   90         return (userland_sysctl(p, name, 2, 0, 0, 0,
   91                 uap->hostname, uap->len, 0));
   92 }
   93 
   94 #ifndef _SYS_SYSPROTO_H_
   95 struct ogethostid_args {
   96         int     dummy;
   97 };
   98 #endif
   99 /* ARGSUSED */
  100 int
  101 ogethostid(p, uap)
  102         struct proc *p;
  103         struct ogethostid_args *uap;
  104 {
  105 
  106         *(long *)(p->p_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)
  120         struct proc *p;
  121         struct osethostid_args *uap;
  122 {
  123         int error;
  124 
  125         if ((error = suser(p->p_ucred, &p->p_acflag)))
  126                 return (error);
  127         hostid = uap->hostid;
  128         return (0);
  129 }
  130 
  131 int
  132 oquota(p, uap)
  133         struct proc *p;
  134         struct oquota_args *uap;
  135 {
  136 
  137         return (ENOSYS);
  138 }
  139 #endif /* COMPAT_43 */
  140 
  141 #ifndef _SYS_SYSPROTO_H_
  142 struct uname_args {
  143         struct utsname  *name;
  144 };
  145 #endif
  146 
  147 /* ARGSUSED */
  148 int
  149 uname(p, uap)
  150         struct proc *p;
  151         struct uname_args *uap;
  152 {
  153         int name[2], rtval;
  154         size_t len;
  155         char *s, *us;
  156 
  157         name[0] = CTL_KERN;
  158         name[1] = KERN_OSTYPE;
  159         len = sizeof uap->name->sysname;
  160         rtval = userland_sysctl(p, name, 2, uap->name->sysname, &len, 
  161                 1, 0, 0, 0);
  162         if( rtval) return rtval;
  163         subyte( uap->name->sysname + sizeof(uap->name->sysname) - 1, 0);
  164 
  165         name[1] = KERN_HOSTNAME;
  166         len = sizeof uap->name->nodename;
  167         rtval = userland_sysctl(p, name, 2, uap->name->nodename, &len, 
  168                 1, 0, 0, 0);
  169         if( rtval) return rtval;
  170         subyte( uap->name->nodename + sizeof(uap->name->nodename) - 1, 0);
  171 
  172         name[1] = KERN_OSRELEASE;
  173         len = sizeof uap->name->release;
  174         rtval = userland_sysctl(p, name, 2, uap->name->release, &len, 
  175                 1, 0, 0, 0);
  176         if( rtval) return rtval;
  177         subyte( uap->name->release + sizeof(uap->name->release) - 1, 0);
  178 
  179 /*
  180         name = KERN_VERSION;
  181         len = sizeof uap->name->version;
  182         rtval = userland_sysctl(p, name, 2, uap->name->version, &len, 
  183                 1, 0, 0, 0);
  184         if( rtval) return rtval;
  185         subyte( uap->name->version + sizeof(uap->name->version) - 1, 0);
  186 */
  187 
  188 /*
  189  * this stupid hackery to make the version field look like FreeBSD 1.1
  190  */
  191         for(s = version; *s && *s != '#'; s++);
  192 
  193         for(us = uap->name->version; *s && *s != ':'; s++) {
  194                 rtval = subyte( us++, *s);
  195                 if( rtval)
  196                         return rtval;
  197         }
  198         rtval = subyte( us++, 0);
  199         if( rtval)
  200                 return rtval;
  201 
  202         name[0] = CTL_HW;
  203         name[1] = HW_MACHINE;
  204         len = sizeof uap->name->machine;
  205         rtval = userland_sysctl(p, name, 2, uap->name->machine, &len, 
  206                 1, 0, 0, 0);
  207         if( rtval) return rtval;
  208         subyte( uap->name->machine + sizeof(uap->name->machine) - 1, 0);
  209 
  210         return 0;
  211 }
  212 
  213 #ifndef _SYS_SYSPROTO_H_
  214 struct getdomainname_args {
  215         char    *domainname;
  216         int     len;
  217 };
  218 #endif
  219 
  220 /* ARGSUSED */
  221 int
  222 getdomainname(p, uap)
  223         struct proc *p;
  224         struct getdomainname_args *uap;
  225 {
  226         int domainnamelen = strlen(domainname) + 1;
  227         if ((u_int)uap->len > domainnamelen + 1)
  228                 uap->len = domainnamelen + 1;
  229         return (copyout((caddr_t)domainname, (caddr_t)uap->domainname, uap->len));
  230 }
  231 
  232 #ifndef _SYS_SYSPROTO_H_
  233 struct setdomainname_args {
  234         char    *domainname;
  235         int     len;
  236 };
  237 #endif
  238 
  239 /* ARGSUSED */
  240 int
  241 setdomainname(p, uap)
  242         struct proc *p;
  243         struct setdomainname_args *uap;
  244 {
  245         int error, domainnamelen;
  246 
  247         if ((error = suser(p->p_ucred, &p->p_acflag)))
  248                 return (error);
  249         if ((u_int)uap->len > sizeof (domainname) - 1)
  250                 return EINVAL;
  251         domainnamelen = uap->len;
  252         error = copyin((caddr_t)uap->domainname, domainname, uap->len);
  253         domainname[domainnamelen] = 0;
  254         return (error);
  255 }
  256 

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