setdomainname(2) - Linux man page

Name

getdomainname, setdomainname - get/set domain name

Synopsis

#include <unistd.h>

int getdomainname(char *name, size_t len);
int setdomainname(const char *name, size_t len);

Description

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).

Return Value

On success, zero is returned. On error, -1 is returned, and errno is set appropriately.

Errors

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).

Conforming to

POSIX does not specify these calls.

See Also

gethostname(2), sethostname(2), uname(2)

Referenced By

capabilities(7), icmpdnd(8), syscalls(2)