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GETDOMAINNAME(2) Linux Programmer's Manual GETDOMAINNAME(2)
NAME
getdomainname, setdomainname - get/set domain name
SYNOPSIS
#include<unistd.h>
intgetdomainname(char*name,size_t len);
intsetdomainname(constchar*name,size_t len);
DESCRIPTION
These functions are used to access or to change the domain name of the
current processor. If the NUL-terminated domain name requires more
than len bytes, getdomainname returns the first len bytes (glibc) or
returns an error (libc).
RETURNVALUE
On success, zero is returned. On error, -1 is returned, and errno is
set appropriately.
ERRORS
EINVAL For getdomainname under libc: name is NULL or name is longer
than len bytes.
EINVAL For setdomainname: len was negative or too large.
EPERM For setdomainname: the caller was not the superuser.
EFAULT For setdomainname: name pointed outside of user address space.
CONFORMINGTO
POSIX does not specify these calls.
SEEALSO
gethostname(2), sethostname(2), uname(2)
Linux 2.0 1997-08-25 GETDOMAINNAME(2)
Take our 
