Name
getdomainname, setdomainname — get/set NIS domain name
Synopsis
#include <unistd.h>
int
getdomainname( |
char *name, |
size_t len); |
int
setdomainname( |
const char *name, |
size_t len); |
![[Note]](../stylesheet/note.png) |
Note | ||
|---|---|---|---|
|
DESCRIPTION
These functions are used to access or to change the NIS domain name of the host system.
setdomainname() sets the
domain name to the value given in the character array
name. The len argument specifies the
number of bytes in name. (Thus, name does not require a
terminating null byte.)
getdomainname() returns the
null-terminated domain name in the character array name, which has a length of
len bytes. If the
null-terminated domain name requires more than len bytes, getdomainname() returns the first
len bytes (glibc) or
gives an error (libc).
RETURN VALUE
On success, zero is returned. On error, −1 is
returned, and errno is set
appropriately.
ERRORS
setdomainname() can fail
with the following errors:
- EFAULT
-
namepointed outside of user address space. - EINVAL
-
lenwas negative or too large. - EPERM
-
the caller is unprivileged (Linux: does not have the
CAP_SYS_ADMINcapability).
getdomainname() can fail
with the following errors:
- EINVAL
-
For
getdomainname() under libc:nameis NULL ornameis longer thanlenbytes.
NOTES
Since Linux 1.0, the limit on the length of a domain name, including the terminating null byte, is 64 bytes. In older kernels, it was 8 bytes.
On most Linux architectures (including x86), there is no
getdomainname() system call;
instead, glibc implements getdomainname() as a library function that
returns a copy of the domainname field returned
from a call to uname(2).
COLOPHON
This page is part of release 3.52 of the Linux man-pages project. A
description of the project, and information about reporting
bugs, can be found at
http://www.kernel.org/doc/man−pages/.
|
Copyright 1993 Rickard E. Faith (faithcs.unc.edu) %%%LICENSE_START(VERBATIM) Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Since the Linux kernel and libraries are constantly changing, this manual page may be incorrect or out-of-date. The author(s) assume no responsibility for errors or omissions, or for damages resulting from the use of the information contained herein. The author(s) may not have taken the same level of care in the production of this manual, which is licensed free of charge, as they might when working professionally. Formatted or processed versions of this manual, if unaccompanied by the source, must acknowledge the copyright and authors of this work. %%%LICENSE_END Modified 1997-08-25 by Nicolás Lichtmaier <nickdebian.org> Modified 2004-06-17 by Michael Kerrisk <mtk.manpagesgmail.com> Modified 2008-11-27 by mtk |