minix/lib/libc/gen/getdomainname.3
Ben Gras 2fe8fb192f Full switch to clang/ELF. Drop ack. Simplify.
There is important information about booting non-ack images in
docs/UPDATING. ack/aout-format images can't be built any more, and
booting clang/ELF-format ones is a little different. Updating to the
new boot monitor is recommended.

Changes in this commit:

	. drop boot monitor -> allowing dropping ack support
	. facility to copy ELF boot files to /boot so that old boot monitor
	  can still boot fairly easily, see UPDATING
	. no more ack-format libraries -> single-case libraries
	. some cleanup of OBJECT_FMT, COMPILER_TYPE, etc cases
	. drop several ack toolchain commands, but not all support
	  commands (e.g. aal is gone but acksize is not yet).
	. a few libc files moved to netbsd libc dir
	. new /bin/date as minix date used code in libc/
	. test compile fix
	. harmonize includes
	. /usr/lib is no longer special: without ack, /usr/lib plays no
	  kind of special bootstrapping role any more and bootstrapping
	  is done exclusively through packages, so releases depend even
	  less on the state of the machine making them now.
	. rename nbsd_lib* to lib*
	. reduce mtree
2012-02-14 14:52:02 +01:00

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.\" $NetBSD: getdomainname.3,v 1.15 2003/08/07 16:42:49 agc Exp $
.\"
.\" Copyright (c) 1983, 1991, 1993
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.\"
.\" @(#)gethostname.3 8.1 (Berkeley) 6/4/93
.\"
.Dd May 6, 1994
.Dt GETDOMAINNAME 3
.Os
.Sh NAME
.Nm getdomainname ,
.Nm setdomainname
.Nd get/set domain name of current host
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In unistd.h
.Ft int
.Fn getdomainname "char *name" "size_t namelen"
.Ft int
.Fn setdomainname "const char *name" "size_t namelen"
.Sh DESCRIPTION
.Fn getdomainname
returns the standard domain name for the current processor, as
previously set by
.Fn setdomainname .
The parameter
.Fa namelen
specifies the size of the
.Fa name
array.
The returned name is null-terminated unless insufficient
space is provided.
.Pp
.Fn setdomainname
sets the 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
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 .
.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
parameter gave an
invalid address.
.It Bq Er EPERM
The caller tried to set the domain name and was not the super-user.
.El
.Sh SEE ALSO
.Xr gethostid 3 ,
.Xr gethostname 3 ,
.Xr sysctl 3
.Sh HISTORY
The
.Nm
function call appeared in
.Bx 4.2 .
.Sh BUGS
Domain names are limited to
.Dv MAXHOSTNAMELEN
(from
.Ao Pa sys/param.h Ac )
characters including null-termination, currently 256.