clocal, nonblock, other carrier related stuff

[unix-history] / usr / src / sys / kern / kern_xxx.c

/*
* Copyright (c) 1982, 1986 Regents of the University of California.
* All rights reserved.  The Berkeley software License Agreement
* specifies the terms and conditions for redistribution.
*
*      @(#)kern_xxx.c  7.5 (Berkeley) %G%
*/

#include "param.h"
#include "systm.h"
#include "dir.h"
#include "user.h"
#include "kernel.h"
#include "proc.h"
#include "reboot.h"

gethostid()
{

       u.u_r.r_val1 = hostid;
}

sethostid()
{
       struct a {
               long    hostid;
       } *uap = (struct a *)u.u_ap;

       if (u.u_error = suser(u.u_cred, &u.u_acflag))
               return;
       hostid = uap->hostid;
}

gethostname()
{
       register struct a {
               char    *hostname;
               u_int   len;
       } *uap = (struct a *)u.u_ap;

       if (uap->len > hostnamelen + 1)
               uap->len = hostnamelen + 1;
       u.u_error = copyout((caddr_t)hostname, (caddr_t)uap->hostname,
               uap->len);
}

sethostname()
{
       register struct a {
               char    *hostname;
               u_int   len;
       } *uap = (struct a *)u.u_ap;

       if (u.u_error = suser(u.u_cred, &u.u_acflag))
               return;
       if (uap->len > sizeof (hostname) - 1) {
               u.u_error = EINVAL;
               return;
       }
       hostnamelen = uap->len;
       u.u_error = copyin((caddr_t)uap->hostname, hostname, uap->len);
       hostname[hostnamelen] = 0;
}

reboot()
{
       register struct a {
               int     opt;
       };

       if (u.u_error = suser(u.u_cred, &u.u_acflag))
               return;
       boot(((struct a *)u.u_ap)->opt);
}