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# getdomainname() - Unix, Linux System Call

# 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

Tag | Description
--- | ---
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)

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