getdomainname(2N) getdomainname(2N)NAME getdomainname, setdomainname - get/set name of current network domain SYNOPSIS int getdomainname(name, namelen) char *name; int namelen; int setdomainname(name, namelen) char *name; int namelen; DESCRIPTION getdomainname returns the name of the network domain for the current processor, as previously set by setdomainname. The parameter namelen specifies the size of the name array. The returned name is null-terminated unless insufficient space is provided. setdomainname sets the domain of the host machine to be name, which has length namelen. This call is restricted to the superuser and is normally used only when the system is bootstrapped. The purpose of domains is to enable two distinct networks that may have host names in common to merge. Each network would be distinguished by having a different domain name. At the current time, only the yellow pages service makes use of domains. STATUS MESSAGES AND VALUES If the call succeeds, a value of 0 is returned. If the call fails, then a value of -1 is returned and an error code is placed in the global location errno. The following errors may be returned by these calls: EFAULT The name or namelen parameter gave an invalid address. EPERM The caller was not the superuser. LIMITATIONS Domain names are limited to 255 characters. January 1992 1