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/* Copyright (C) 1994-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
/* Put the name of the current YP domain in no more than LEN bytes of NAME.
The result is null-terminated if LEN is large enough for the full
name and the terminator. */
#include <errno.h>
#include <unistd.h>
#include <sys/param.h>
#include <sys/utsname.h>
#include <string.h>
#if _UTSNAME_DOMAIN_LENGTH
/* The `uname' information includes the domain name. */
int
getdomainname (char *name, size_t len)
{
struct utsname u;
size_t u_len;
if (uname (&u) < 0)
return -1;
u_len = strlen (u.domainname);
memcpy (name, u.domainname, MIN (u_len + 1, len));
return 0;
}
#else
int
getdomainname (char *name, size_t len)
{
__set_errno (ENOSYS);
return -1;
}
stub_warning (getdomainname)
#endif
libc_hidden_def (getdomainname)
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