acl_valid.c revision 92986 
1/*-
2 * Copyright (c) 1999, 2000, 20001 Robert N. M. Watson
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26/*
27 * acl_valid -- POSIX.1e ACL check routine
28 */
29
30#include <sys/cdefs.h>
31__FBSDID("$FreeBSD: head/lib/libc/posix1e/acl_valid.c 92986 2002-03-22 21:53:29Z obrien $");
32
33#include <sys/types.h>
34#include "namespace.h"
35#include <sys/acl.h>
36#include "un-namespace.h"
37#include <sys/errno.h>
38#include <stdlib.h>
39
40#include "acl_support.h"
41
42/*
43 * acl_valid: accepts an ACL, returns 0 on valid ACL, -1 for invalid,
44 * and errno set to EINVAL.
45 *
46 * Implemented by calling the acl_check routine in acl_support, which
47 * requires ordering.  We call acl_support's _posix1e_acl_sort to make this
48 * true.  POSIX.1e allows acl_valid() to reorder the ACL as it sees fit.
49 *
50 * This call is deprecated, as it doesn't ask whether the ACL is valid
51 * for a particular target.  However, this call is standardized, unlike
52 * the other two forms.
53 */
54int
55acl_valid(acl_t acl)
56{
57	int	error;
58
59	if (acl == NULL) {
60		errno = EINVAL;
61		return (-1);
62	}
63	_posix1e_acl_sort(acl);
64	error = _posix1e_acl_check(acl);
65	if (error) {
66		errno = error;
67		return (-1);
68	} else {
69		return (0);
70	}
71}
72
73
74int
75acl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl)
76{
77	int	error;
78
79	if (pathp == NULL || acl == NULL) {
80		errno = EINVAL;
81		return (-1);
82	}
83	if (_posix1e_acl(acl, type)) {
84		error = _posix1e_acl_sort(acl);
85		if (error) {
86			errno = error;
87			return (-1);
88		}
89	}
90
91	return (__acl_aclcheck_file(pathp, type, &acl->ats_acl));
92}
93
94
95int
96acl_valid_fd_np(int fd, acl_type_t type, acl_t acl)
97{
98	int	error;
99
100	if (acl == NULL) {
101		errno = EINVAL;
102		return (-1);
103	}
104	if (_posix1e_acl(acl, type)) {
105		error = _posix1e_acl_sort(acl);
106		if (error) {
107			errno = error;
108			return (-1);
109		}
110	}
111
112	acl->ats_cur_entry = 0;
113
114
115	return (___acl_aclcheck_fd(fd, type, &acl->ats_acl));
116}
117