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

The gethostname system call 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. 

The sethostname system call 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. 

RESTRICTIONS

Host names are limited to 255 characters. 

DIAGNOSTICS

The following errors may be returned by these calls:

[EFAULT] The name or namelen parameter gave an invalid address. 

[EPERM] The caller tried to set the host name and was not the super-user. 

SEE ALSO

hostname(1), gethostid(2)