Home
Man
Search
Today's Posts
Register

Linux & Unix Commands - Search Man Pages

CentOS 7.0 - man page for getdomainname (centos section 2)

GETDOMAINNAME(2)			      Linux Programmer's Manual 			     GETDOMAINNAME(2)

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); Feature Test Macro Requirements for glibc (see feature_test_macros(7)): getdomainname(), setdomainname(): _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
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 speci- fies 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 name pointed outside of user address space. EINVAL len was negative or too large. EPERM the caller is unprivileged (Linux: does not have the CAP_SYS_ADMIN capability). getdomainname() can fail with the following errors: EINVAL For getdomainname() under libc: name is NULL or name is longer than len bytes.
CONFORMING TO
POSIX does not specify these calls.
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 imple- ments getdomainname() as a library function that returns a copy of the domainname field returned from a call to uname(2).
SEE ALSO
gethostname(2), sethostname(2), uname(2)
COLOPHON
This page is part of release 3.53 of the Linux man-pages project. A description of the project, and informa- tion about reporting bugs, can be found at http://www.kernel.org/doc/man-pages/. Linux 2012-10-25 GETDOMAINNAME(2)


All times are GMT -4. The time now is 09:40 AM.

Unix & Linux Forums Content Copyright 1993-2018. All Rights Reserved.
UNIX.COM Login
Username:
Password:  
Show Password