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5b2abdfb	1	.\" Copyright (c) 1983, 1991, 1993
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5b2abdfb A	32	.\" @(#)gethostname.3 8.1 (Berkeley) 6/4/93
5b2abdfb A	33	.\" $FreeBSD: src/lib/libc/gen/getdomainname.3,v 1.14 2001/10/01 16:08:51 ru Exp $
e9ce8d39	34	.\"
5b2abdfb A	35	.Dd May 6, 1994
5b2abdfb A	36	.Dt GETDOMAINNAME 3
e9ce8d39 A	37	.Os
e9ce8d39 A	38	.Sh NAME
5b2abdfb A	39	.Nm getdomainname ,
5b2abdfb A	40	.Nm setdomainname
9385eb3d	41	.Nd get/set NIS domain name of current host
e9ce8d39 A	42	.Sh LIBRARY
	43	.Lb libc
	44	.Sh SYNOPSIS
5b2abdfb	45	.In unistd.h
e9ce8d39	46	.Ft int
5b2abdfb A	47	.Fn getdomainname "char *name" "int namelen"
	48	.Ft int
	49	.Fn setdomainname "const char *name" "int namelen"
e9ce8d39	50	.Sh DESCRIPTION
5b2abdfb	51	.Fn Getdomainname
9385eb3d	52	returns the standard NIS domain name for the current host, as
5b2abdfb A	53	previously set by
	54	.Fn setdomainname .
	55	The parameter
	56	.Fa namelen
	57	specifies the size of the
	58	.Fa name
	59	array. The returned name is null-terminated unless insufficient
	60	space is provided.
	61	.Pp
	62	.Fn Setdomainname
9385eb3d	63	sets the NIS domain name of the host machine to be
5b2abdfb A	64	.Fa name ,
	65	which has length
	66	.Fa namelen .
	67	This call is restricted to the super-user and
	68	is normally used only when the system is bootstrapped.
e9ce8d39	69	.Sh RETURN VALUES
5b2abdfb	70	.Rv -std
e9ce8d39	71	.Sh ERRORS
5b2abdfb	72	The following errors may be returned by these calls:
e9ce8d39	73	.Bl -tag -width Er
5b2abdfb A	74	.It Bq Er EFAULT
	75	The
	76	.Fa name
	77	or
	78	.Fa namelen
	79	parameter gave an
	80	invalid address.
	81	.It Bq Er EPERM
	82	The caller tried to set the hostname and was not the super-user.
	83	.El
e9ce8d39	84	.Sh SEE ALSO
5b2abdfb A	85	.Xr gethostid 3 ,
	86	.Xr gethostname 3 ,
	87	.Xr sysctl 3
	88	.Sh BUGS
	89	Domain names are limited to
	90	.Dv MAXHOSTNAMELEN
	91	(from
	92	.Ao Pa sys/param.h Ac )
	93	characters, currently 256.
e9ce8d39 A	94	.Sh HISTORY
e9ce8d39 A	95	The
5b2abdfb A	96	.Fn getdomainname
	97	function call appeared in
	98	.Bx 4.2 .