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      1 /*-
      2  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
      3  *
      4  * Copyright (c) 2008, 2009 Edward Tomasz Napieraa <trasz (at) FreeBSD.org>
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
     17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
     20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     26  * SUCH DAMAGE.
     27  */
     28 
     29 #include <sys/cdefs.h>
     30 #if 0
     31 __FBSDID("$FreeBSD: head/lib/libc/posix1e/acl_flag.c 326193 2017-11-25 17:12:48Z pfg $");
     32 #else
     33 __RCSID("$NetBSD: acl_flag.c,v 1.1 2020/05/16 18:31:47 christos Exp $");
     34 #endif
     35 
     36 #include <stdio.h>
     37 #include <errno.h>
     38 #include <sys/acl.h>
     39 
     40 #include "acl_support.h"
     41 
     42 static int
     43 _flag_is_invalid(acl_flag_t flag)
     44 {
     45 
     46 	if ((flag & ACL_FLAGS_BITS) == flag)
     47 		return (0);
     48 
     49 	errno = EINVAL;
     50 
     51 	return (1);
     52 }
     53 
     54 int
     55 acl_add_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
     56 {
     57 
     58 	if (flagset_d == NULL) {
     59 		errno = EINVAL;
     60 		return (-1);
     61 	}
     62 
     63 	if (_flag_is_invalid(flag))
     64 		return (-1);
     65 
     66 	*flagset_d |= flag;
     67 
     68 	return (0);
     69 }
     70 
     71 int
     72 acl_clear_flags_np(acl_flagset_t flagset_d)
     73 {
     74 
     75 	if (flagset_d == NULL) {
     76 		errno = EINVAL;
     77 		return (-1);
     78 	}
     79 
     80 	*flagset_d = 0;
     81 
     82 	return (0);
     83 }
     84 
     85 int
     86 acl_delete_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
     87 {
     88 
     89 	if (flagset_d == NULL) {
     90 		errno = EINVAL;
     91 		return (-1);
     92 	}
     93 
     94 	if (_flag_is_invalid(flag))
     95 		return (-1);
     96 
     97 	*flagset_d &= ~flag;
     98 
     99 	return (0);
    100 }
    101 
    102 int
    103 acl_get_flag_np(acl_flagset_t flagset_d, acl_flag_t flag)
    104 {
    105 
    106 	if (flagset_d == NULL) {
    107 		errno = EINVAL;
    108 		return (-1);
    109 	}
    110 
    111 	if (_flag_is_invalid(flag))
    112 		return (-1);
    113 
    114 	if (*flagset_d & flag)
    115 		return (1);
    116 
    117 	return (0);
    118 }
    119 
    120 int
    121 acl_get_flagset_np(acl_entry_t entry_d, acl_flagset_t *flagset_p)
    122 {
    123 
    124 	if (entry_d == NULL || flagset_p == NULL) {
    125 		errno = EINVAL;
    126 		return (-1);
    127 	}
    128 
    129 	if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
    130 		errno = EINVAL;
    131 		return (-1);
    132 	}
    133 
    134 	*flagset_p = &entry_d->ae_flags;
    135 
    136 	return (0);
    137 }
    138 
    139 int
    140 acl_set_flagset_np(acl_entry_t entry_d, acl_flagset_t flagset_d)
    141 {
    142 
    143 	if (entry_d == NULL) {
    144 		errno = EINVAL;
    145 		return (-1);
    146 	}
    147 
    148 	if (!_entry_brand_may_be(entry_d, ACL_BRAND_NFS4)) {
    149 		errno = EINVAL;
    150 		return (-1);
    151 	}
    152 
    153 	_entry_brand_as(entry_d, ACL_BRAND_NFS4);
    154 
    155 	if (_flag_is_invalid(*flagset_d))
    156 		return (-1);
    157 
    158 	entry_d->ae_flags = *flagset_d;
    159 
    160 	return (0);
    161 }
    162