freebsd-skq/lib/libc/gen/getdomainname.3

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.\" @(#)gethostname.3 8.1 (Berkeley) 6/4/93
1999-08-28 00:22:10 +00:00
.\" $FreeBSD$
.\"
.Dd May 6, 1994
.Dt GETDOMAINNAME 3
.Os
.Sh NAME
.Nm getdomainname ,
.Nm setdomainname
.Nd get/set the NIS domain name of current host
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In unistd.h
.Ft int
.Fn getdomainname "char *name" "int namelen"
.Ft int
.Fn setdomainname "const char *name" "int namelen"
.Sh DESCRIPTION
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The
.Fn getdomainname
function
returns the standard NIS domain name for the current host, as
previously set by
.Fn setdomainname .
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The
.Fa namelen
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argument
specifies the size of the
.Fa name
array.
The returned name is null-terminated unless insufficient
space is provided.
.Pp
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The
.Fn setdomainname
function
sets the NIS domain name of the host machine to be
.Fa name ,
which has length
.Fa namelen .
This call is restricted to the super-user and
is normally used only when the system is bootstrapped.
.Sh RETURN VALUES
.Rv -std
.Sh ERRORS
The following errors may be returned by these calls:
.Bl -tag -width Er
.It Bq Er EFAULT
The
.Fa name
or
.Fa namelen
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argument gave an
invalid address.
.It Bq Er EPERM
The caller tried to set the hostname and was not the super-user.
.El
.Sh SEE ALSO
.Xr gethostid 3 ,
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.Xr gethostname 3 ,
.Xr sysctl 3
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.Sh HISTORY
The
.Fn getdomainname
function appeared in
.Bx 4.2 .
.Sh BUGS
Domain names are limited to
.Dv MAXHOSTNAMELEN
(from
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.In sys/param.h )
characters, currently 256.