gen/getdomainname.3

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  32 .\"     @(#)gethostname.3       8.1 (Berkeley) 6/4/93
  33 .\" $FreeBSD: src/lib/libc/gen/getdomainname.3,v 1.14 2001/10/01 16:08:51 ru Exp $
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  35 .Dd May 6, 1994
  36 .Dt GETDOMAINNAME 3
  37 .Os
  38 .Sh NAME
  39 .Nm getdomainname ,
  40 .Nm setdomainname
  41 .Nd get/set NIS domain name of current host
  42 .Sh LIBRARY
  43 .Lb libc
  44 .Sh SYNOPSIS
  45 .In unistd.h
  46 .Ft int
  47 .Fn getdomainname "char *name" "int namelen"
  48 .Ft int
  49 .Fn setdomainname "const char *name" "int namelen"
  50 .Sh DESCRIPTION
  51 .Fn Getdomainname
  52 returns the standard NIS domain name for the current host, as
  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
  63 sets the NIS domain name of the host machine to be
  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.
  69 .Sh RETURN VALUES
  70 .Rv -std
  71 .Sh ERRORS
  72 The following errors may be returned by these calls:
  73 .Bl -tag -width Er
  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
  84 .Sh SEE ALSO
  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.
  94 .Sh HISTORY
  95 The
  96 .Fn getdomainname
  97 function call appeared in
  98 .Bx 4.2 .