1.\" Copyright (c) 1983, 1991, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 3. Neither the name of the University nor the names of its contributors 13.\" may be used to endorse or promote products derived from this software 14.\" without specific prior written permission. 15.\" 16.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 17.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 20.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26.\" SUCH DAMAGE. 27.\" 28.\" @(#)gethostname.3 8.1 (Berkeley) 6/4/93 29.\" 30.Dd May 6, 1994 31.Dt GETDOMAINNAME 3 32.Os 33.Sh NAME 34.Nm getdomainname , 35.Nm setdomainname 36.Nd get/set the NIS domain name of current host 37.Sh LIBRARY 38.Lb libc 39.Sh SYNOPSIS 40.In unistd.h 41.Ft int 42.Fn getdomainname "char *name" "int namelen" 43.Ft int 44.Fn setdomainname "const char *name" "int namelen" 45.Sh DESCRIPTION 46The 47.Fn getdomainname 48function 49returns the standard NIS domain name for the current host, as 50previously set by 51.Fn setdomainname . 52The 53.Fa namelen 54argument 55specifies the size of the 56.Fa name 57array. 58The returned name is null-terminated unless insufficient 59space is provided. 60.Pp 61The 62.Fn setdomainname 63function 64sets the NIS domain name of the host machine to be 65.Fa name , 66which has length 67.Fa namelen . 68This call is restricted to the super-user and 69is normally used only when the system is bootstrapped. 70.Sh RETURN VALUES 71.Rv -std 72.Sh ERRORS 73The following errors may be returned by these calls: 74.Bl -tag -width Er 75.It Bq Er EFAULT 76The 77.Fa name 78or 79.Fa namelen 80argument gave an 81invalid address. 82.It Bq Er EPERM 83The caller tried to set the hostname and was not the super-user. 84.El 85.Sh SEE ALSO 86.Xr gethostid 3 , 87.Xr gethostname 3 , 88.Xr sysctl 3 89.Sh HISTORY 90The 91.Fn getdomainname 92function appeared in 93.Bx 4.2 . 94.Sh BUGS 95Domain names are limited to 96.Dv MAXHOSTNAMELEN 97(from 98.In sys/param.h ) 99characters, currently 256. 100