/*- * SPDX-License-Identifier: BSD-2-Clause-FreeBSD * * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson * 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. */ /* * acl_init -- return a fresh acl structure * acl_dup -- duplicate an acl and return the new copy */ #include <sys/cdefs.h> __FBSDID("$FreeBSD$"); #include <sys/types.h> #include "namespace.h" #include <sys/acl.h> #include "un-namespace.h" #include <errno.h> #include <stdlib.h> #include <string.h> #include <assert.h> #include "acl_support.h" #ifndef CTASSERT #define CTASSERT(x) _CTASSERT(x, __LINE__) #define _CTASSERT(x, y) __CTASSERT(x, y) #define __CTASSERT(x, y) typedef char __assert_ ## y [(x) ? 1 : -1] #endif CTASSERT(1 << _ACL_T_ALIGNMENT_BITS > sizeof(struct acl_t_struct)); acl_t acl_init(int count) { int error; acl_t acl; if (count > ACL_MAX_ENTRIES) { errno = ENOMEM; return (NULL); } if (count < 0) { errno = EINVAL; return (NULL); } error = posix_memalign((void *)&acl, 1 << _ACL_T_ALIGNMENT_BITS, sizeof(struct acl_t_struct)); if (error) { errno = error; return (NULL); } bzero(acl, sizeof(struct acl_t_struct)); acl->ats_brand = ACL_BRAND_UNKNOWN; acl->ats_acl.acl_maxcnt = ACL_MAX_ENTRIES; return (acl); } acl_t acl_dup(acl_t acl) { acl_t acl_new; acl_new = acl_init(ACL_MAX_ENTRIES); if (acl_new != NULL) { *acl_new = *acl; acl->ats_cur_entry = 0; acl_new->ats_cur_entry = 0; } return (acl_new); } |