osf1 man page for setdomainname

getdomainname(2)						System Calls Manual						  getdomainname(2)

NAME
       getdomainname, setdomainname - get or set name of current domain

SYNOPSIS
       getdomainname(name, namelen)
	       char *name;
	       int namelen;

       setdomainname(name, namelen)
	       char *name;
	       int namelen;

DESCRIPTION
       The getdomainname system call returns the domain name of the current host, as set by setdomainname.

       The  setdomainname system call sets the domain of the host machine to be name, which has a length specified by namelen. This system call is
       restricted to the superuser and is normally used only when the system is bootstrapped.

       The purpose of domains is to allow merging of two distinct networks that have common host names.  Each network can be distinguished by hav-
       ing a different domain name.  At the current time, only the Network Information Service (NIS) makes use of domains.

       The name argument is the address where the name of the current domain is stored.

       The namelen argument specifies the size of the name array.  The returned name is null-terminated unless insufficient space is provided.

RESTRICTIONS
       Domain names are limited to 64 characters.

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, errno.

ERRORS
       The name parameter contains an invalid address.	The caller was not the superuser.  This error message only applies  to	the  setdomainname
       system call.

																  getdomainname(2)