freebsd-dev/lib/libc/posix1e/acl_flag.c

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/*-
* Copyright (c) 2008, 2009 Edward Tomasz Napierała <trasz@FreeBSD.org>
* 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 THE 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>
__FBSDID("$FreeBSD$");
#include <stdio.h>
#include <errno.h>
#include <sys/acl.h>
#include "acl_support.h"
static int
_flag_is_invalid(acl_flag_t flag)
{
if ((flag & ACL_FLAGS_BITS) == flag)
return (0);
errno = EINVAL;
return (1);
}
int
acl_add_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
{
if (flagset_d == NULL) {
errno = EINVAL;
return (-1);
}
if (_flag_is_invalid(flag))
return (-1);
*flagset_d |= flag;
return (0);
}
int
acl_clear_flags_np(acl_flagset_t flagset_d)
{
if (flagset_d == NULL) {
errno = EINVAL;
return (-1);
}
*flagset_d |= 0;
return (0);
}
int
acl_delete_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
{
if (flagset_d == NULL) {
errno = EINVAL;
return (-1);
}
if (_flag_is_invalid(flag))
return (-1);
*flagset_d &= ~flag;
return (0);
}
int
acl_get_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
{
if (flagset_d == NULL) {
errno = EINVAL;
return (-1);
}
if (_flag_is_invalid(flag))
return (-1);
if (*flagset_d & flag)
return (1);
return (0);
}
int
acl_get_flagset_np(acl_entry_t entry_d, acl_flagset_t *flagset_p)
{
if (entry_d == NULL || flagset_p == NULL) {
errno = EINVAL;
return (-1);
}
if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
errno = EINVAL;
return (-1);
}
*flagset_p = &entry_d->ae_flags;
return (0);
}
int
acl_set_flagset_np(acl_entry_t entry_d, acl_flagset_t flagset_d)
{
if (entry_d == NULL) {
errno = EINVAL;
return (-1);
}
if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
errno = EINVAL;
return (-1);
}
_entry_brand_as(entry_d, ACL_BRAND_NFS4);
if (_flag_is_invalid(*flagset_d))
return (-1);
entry_d->ae_flags = *flagset_d;
return (0);
}