NAME
getdomainname,
setdomainname —
get/set domain name of current
host
LIBRARY
library “libc”
SYNOPSIS
#include
<unistd.h>
int
getdomainname(char
*name, size_t
namelen);
int
setdomainname(const
char *name, size_t
namelen);
DESCRIPTION
getdomainname()
returns the standard domain name for the current host, 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 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 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 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 domain name and was not the super-user.
SEE ALSO
HISTORY
The getdomainname function call appeared
in 4.2BSD.
BUGS
Domain names are limited to MAXHOSTNAMELEN
(from ⟨sys/param.h⟩) characters
including null-termination, currently 256.