xref: /src/lib/libc/posix1e/acl_copy.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2001-2002 Chris D. Faulhaber
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
#if 0
__FBSDID("$FreeBSD: head/lib/libc/posix1e/acl_copy.c 326193 2017-11-25 17:12:48Z pfg $");
#else
__RCSID("$NetBSD: acl_copy.c,v 1.2 2024/01/20 14:52:48 christos Exp $");
#endif

#include "namespace.h"
#include <sys/types.h>
#include <sys/acl.h>

#include <errno.h>
#include <string.h>

#include "acl_support.h"

/*
 * acl_copy_entry() (23.4.4): copy the contents of ACL entry src_d to
 * ACL entry dest_d
 */
int
acl_copy_entry(acl_entry_t dest_d, acl_entry_t src_d)
{

	if (src_d == NULL || dest_d == NULL || src_d == dest_d) {
		errno = EINVAL;
		return (-1);
	}

	/*
	 * Can we brand the new entry the same as the source entry?
	 */
	if (!_entry_brand_may_be(dest_d, _entry_brand(src_d))) {
		errno = EINVAL;
		return (-1);
	}

	_entry_brand_as(dest_d, _entry_brand(src_d));

	dest_d->ae_tag = src_d->ae_tag;
	dest_d->ae_id = src_d->ae_id;
	dest_d->ae_perm = src_d->ae_perm;
	dest_d->ae_entry_type = src_d->ae_entry_type;
	dest_d->ae_flags = src_d->ae_flags;

	return (0);
}

ssize_t
/*ARGSUSED*/
acl_copy_ext(void *buf_p, acl_t acl, ssize_t size)
{

	errno = ENOSYS;
	return (-1);
}

acl_t
/*ARGSUSED*/
acl_copy_int(const void *buf_p)
{

	errno = ENOSYS;
	return (NULL);
}