getdomainname, setdomainname - get or set name of current domain
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 having 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.
argument specifies the size of the
array. The returned name is null-terminated unless insufficient
space is provided.
Domain names are limited to 64 characters.
If the call succeeds, a value of
If the call fails, a value of
and an error code is placed in the global location,
The name parameter contains an invalid address. The caller was not the superuser. This error message only applies to the setdomainname system call.