|File: [cvs.NetBSD.org] / src / lib / libc / gen / gethostname.3 (download)
Revision 1.10, Sun Sep 16 02:57:03 2001 UTC (17 years, 5 months ago) by wiz
Changes since 1.9: +7 -7
Standardize section headers, sort sections, sort SEE ALSO, punctuation
and misc. fixes.
.\" $NetBSD: gethostname.3,v 1.10 2001/09/16 02:57:03 wiz Exp $
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.\" @(#)gethostname.3 8.1 (Berkeley) 6/4/93
.Dd June 4, 1993
.Dt GETHOSTNAME 3
.Nm gethostname ,
.Nd get/set name of current host
.Fd #include <unistd.h>
.Fn gethostname "char *name" "size_t namelen"
.Fn sethostname "const char *name" "size_t namelen"
returns the standard host name for the current processor, as
previously set by
.Fn sethostname .
specifies the size of the
array. The returned name is null-terminated unless insufficient
space is provided.
sets the 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
If the call succeeds a value of 0 is returned. If the call
fails, a value of -1 is returned and an error code is
placed in the global location
.Va errno .
The following errors may be returned by these calls:
.Bl -tag -width Er
.It Bq Er EFAULT
parameter gave an
.It Bq Er EPERM
The caller tried to set the hostname and was not the super-user.
.Sh SEE ALSO
.Xr gethostid 3 ,
.Xr sysctl 3 ,
.Xr sysctl 8
function conforms to
.St -xpg4.2 .
function call appeared in
.Bx 4.2 .
Host names are limited to
.Ao Pa sys/param.h Ac )
characters including null-termination, currently 256.