getdomainname, setdomainname - get/set domain name
#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)):
Feature Test Macro Requirements for glibc (see feature_test_macros (7)):
getdomainame () setdomainame (): _BSD_SOURCE || (_XOPEN_SOURCE && _XOPEN_SOURCE < 500)
These functions are used to access or to change the domain name of the current processor. If the null-terminated domain name requires more than len bytes, getdomainname () returns the first len bytes (glibc) or returns an error (libc).
On success, zero is returned. On error, -1 is returned, and errno is set appropriately.
EFAULT For setdomainname (): name pointed outside of user address space.
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 is unprivileged (Linux: does not have the CAP_SYS_ADMIN capability).
POSIX does not specify these calls.
gethostname (2) sethostname (2) uname (2)
