NAME
getdomainname,
setdomainname —
get/set domain name of current host
LIBRARY
Standard C Library (libc, -lc)
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
gethostid(3),
gethostname(3),
sysctl(3)
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.