1 /* 2 * Copyright (c) 1982, 1986 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 * 6 * @(#)kern_xxx.c 7.5 (Berkeley) 04/26/89 7 */ 8 9 #include "param.h" 10 #include "systm.h" 11 #include "dir.h" 12 #include "user.h" 13 #include "kernel.h" 14 #include "proc.h" 15 #include "reboot.h" 16 17 gethostid() 18 { 19 20 u.u_r.r_val1 = hostid; 21 } 22 23 sethostid() 24 { 25 struct a { 26 long hostid; 27 } *uap = (struct a *)u.u_ap; 28 29 if (u.u_error = suser(u.u_cred, &u.u_acflag)) 30 return; 31 hostid = uap->hostid; 32 } 33 34 gethostname() 35 { 36 register struct a { 37 char *hostname; 38 u_int len; 39 } *uap = (struct a *)u.u_ap; 40 41 if (uap->len > hostnamelen + 1) 42 uap->len = hostnamelen + 1; 43 u.u_error = copyout((caddr_t)hostname, (caddr_t)uap->hostname, 44 uap->len); 45 } 46 47 sethostname() 48 { 49 register struct a { 50 char *hostname; 51 u_int len; 52 } *uap = (struct a *)u.u_ap; 53 54 if (u.u_error = suser(u.u_cred, &u.u_acflag)) 55 return; 56 if (uap->len > sizeof (hostname) - 1) { 57 u.u_error = EINVAL; 58 return; 59 } 60 hostnamelen = uap->len; 61 u.u_error = copyin((caddr_t)uap->hostname, hostname, uap->len); 62 hostname[hostnamelen] = 0; 63 } 64 65 reboot() 66 { 67 register struct a { 68 int opt; 69 }; 70 71 if (u.u_error = suser(u.u_cred, &u.u_acflag)) 72 return; 73 boot(((struct a *)u.u_ap)->opt); 74 } 75