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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 re- stricted 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 In- formation 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 re- turned 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 loca- tion, errno. ERRORS [EFAULT] The name parameter contains an invalid address. [EPERM] The caller was not the superuser. This error message only applies to the setdomainname system call. delim off getdomainname(2)