NAME

gethostname, sethostname − get/set name of current host

SYNTAX

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

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

DESCRIPTION

Gethostname returns the standard host name for the current processor, as previously set by sethostname. The parameter namelen specifies the size of the name array.  The returned name is null-terminated unless insufficient space is provided. 

Sethostname sets the name of the host machine to be name, which has length namelen. This call is restricted to the super-user and is normally used only when the system is bootstrapped.

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 int the global location errno. 

DIAGNOSTICS

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 super-user. 

SEE ALSO

gethostid(2)

RESTRICTIONS

Host names are limited to 255 characters.