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.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
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.\" Modified 1997-08-25 by Nicolás Lichtmaier <nick@debian.org>
.\" Modified 2004-06-17 by Michael Kerrisk <mtk-manpages@gmx.net>
.\"
.TH GETDOMAINNAME 2 2004-06-17 "Linux 2.6.7" "Linux Programmer's Manual"
.SH NAME
getdomainname, setdomainname \- get/set domain name
.SH SYNOPSIS
.B #include <unistd.h>
.sp
.BI "int getdomainname(char *" name ", size_t " len );
.br
.BI "int setdomainname(const char *" name ", size_t " len );
.SH DESCRIPTION
These functions are used to access or to change the domain name of the
current processor.
If the null-terminated domain name requires more than \fIlen\fP bytes,
.BR getdomainname ()
returns the first \fIlen\fP bytes (glibc) or returns an error (libc).
.SH "RETURN VALUE"
On success, zero is returned.
On error, \-1 is returned, and
.I errno
is set appropriately.
.SH ERRORS
.TP
.B EFAULT
For
.BR setdomainname ():
.I name
pointed outside of user address space.
.TP
.B EINVAL
For
.BR getdomainname ()
under libc:
.I name
is NULL or
.I name
is longer than
.I len
bytes.
.TP
.B EINVAL
For
.BR setdomainname ():
.I len
was negative or too large.
.TP
.B EPERM
For
.BR setdomainname ():
the caller is unprivileged (Linux: does not have the
.B CAP_SYS_ADMIN
capability).
.SH "CONFORMING TO"
POSIX does not specify these calls.
.\" But they appear on most systems...
.SH "SEE ALSO"
.BR gethostname (2),
.BR sethostname (2),
.BR uname (2)