96 lines
2.6 KiB
C
96 lines
2.6 KiB
C
/*-
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* Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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/*
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* acl_init -- return a fresh acl structure
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* acl_dup -- duplicate an acl and return the new copy
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/types.h>
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#include "namespace.h"
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#include <sys/acl.h>
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#include "un-namespace.h"
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#include <errno.h>
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#include <stdlib.h>
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#include <string.h>
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#include <assert.h>
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#include "acl_support.h"
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#ifndef CTASSERT
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#define CTASSERT(x) _CTASSERT(x, __LINE__)
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#define _CTASSERT(x, y) __CTASSERT(x, y)
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#define __CTASSERT(x, y) typedef char __assert_ ## y [(x) ? 1 : -1]
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#endif
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CTASSERT(1 << _ACL_T_ALIGNMENT_BITS > sizeof(struct acl_t_struct));
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acl_t
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acl_init(int count)
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{
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int error;
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acl_t acl;
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if (count > ACL_MAX_ENTRIES) {
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errno = ENOMEM;
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return (NULL);
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}
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if (count < 0) {
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errno = EINVAL;
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return (NULL);
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}
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error = posix_memalign((void *)&acl, 1 << _ACL_T_ALIGNMENT_BITS,
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sizeof(struct acl_t_struct));
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if (error) {
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errno = error;
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return (NULL);
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}
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bzero(acl, sizeof(struct acl_t_struct));
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acl->ats_brand = ACL_BRAND_UNKNOWN;
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acl->ats_acl.acl_maxcnt = ACL_MAX_ENTRIES;
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return (acl);
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}
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acl_t
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acl_dup(acl_t acl)
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{
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acl_t acl_new;
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acl_new = acl_init(ACL_MAX_ENTRIES);
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if (acl_new != NULL) {
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*acl_new = *acl;
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acl->ats_cur_entry = 0;
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acl_new->ats_cur_entry = 0;
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}
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return (acl_new);
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}
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