GETHOSTNAME(2)GETHOSTNAME(2)NAME
gethostname, sethostname - get/set name of current host
SYNOPSIS
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.
RETURN VALUE
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.
ERRORS
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 hostname and was not the
super-user.
SEE ALSOgethostid(2)BUGS
Host names are limited to MAXHOSTNAMELEN (from <sys/param.h>)
characters, currently 256.
4.2 Berkeley Distribution May 22, 1986 GETHOSTNAME(2)