1 /* 2 * Copyright (c) 1982, 1986, 1989 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 * 17 * @(#)kern_xxx.c 7.7 (Berkeley) 05/05/89 18 */ 19 20 #include "param.h" 21 #include "systm.h" 22 #include "user.h" 23 #include "kernel.h" 24 #include "proc.h" 25 #include "reboot.h" 26 27 gethostid() 28 { 29 30 u.u_r.r_val1 = hostid; 31 } 32 33 sethostid() 34 { 35 struct a { 36 long hostid; 37 } *uap = (struct a *)u.u_ap; 38 39 if (u.u_error = suser(u.u_cred, &u.u_acflag)) 40 return; 41 hostid = uap->hostid; 42 } 43 44 gethostname() 45 { 46 register struct a { 47 char *hostname; 48 u_int len; 49 } *uap = (struct a *)u.u_ap; 50 51 if (uap->len > hostnamelen + 1) 52 uap->len = hostnamelen + 1; 53 u.u_error = copyout((caddr_t)hostname, (caddr_t)uap->hostname, 54 uap->len); 55 } 56 57 sethostname() 58 { 59 register struct a { 60 char *hostname; 61 u_int len; 62 } *uap = (struct a *)u.u_ap; 63 64 if (u.u_error = suser(u.u_cred, &u.u_acflag)) 65 return; 66 if (uap->len > sizeof (hostname) - 1) { 67 u.u_error = EINVAL; 68 return; 69 } 70 hostnamelen = uap->len; 71 u.u_error = copyin((caddr_t)uap->hostname, hostname, uap->len); 72 hostname[hostnamelen] = 0; 73 } 74 75 reboot() 76 { 77 register struct a { 78 int opt; 79 }; 80 81 if (u.u_error = suser(u.u_cred, &u.u_acflag)) 82 return; 83 boot(((struct a *)u.u_ap)->opt); 84 } 85