1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2021 Gleb Popov
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 * acl_extended_file_np: Check if the file has extended ACLs set.
30 */
31
32 #include <sys/param.h>
33 #include <sys/errno.h>
34 #include <sys/acl.h>
35
36 #include <unistd.h>
37
38 typedef acl_t (*acl_get_func)(const char *, acl_type_t);
39 typedef long (*pathconf_func)(const char *, int);
40
41 static int
42 _acl_extended_file(acl_get_func f, pathconf_func pathconf_f, const char* path_p);
43
44 int
acl_extended_file_np(const char * path_p)45 acl_extended_file_np(const char *path_p)
46 {
47 return (_acl_extended_file(acl_get_file, pathconf, path_p));
48 }
49
50 int
acl_extended_file_nofollow_np(const char * path_p)51 acl_extended_file_nofollow_np(const char *path_p)
52 {
53 return (_acl_extended_file(acl_get_link_np, lpathconf, path_p));
54 }
55
56 int
acl_extended_link_np(const char * path_p)57 acl_extended_link_np(const char *path_p)
58 {
59 return (_acl_extended_file(acl_get_link_np, lpathconf, path_p));
60 }
61
62 int
_acl_extended_file(acl_get_func acl_get,pathconf_func pathconf_f,const char * path_p)63 _acl_extended_file(acl_get_func acl_get, pathconf_func pathconf_f, const char* path_p)
64 {
65 acl_t acl;
66 int retval, istrivial, acltype = ACL_TYPE_ACCESS;
67
68 retval = pathconf_f(path_p, _PC_ACL_NFS4);
69 if (retval > 0)
70 acltype = ACL_TYPE_NFS4;
71
72 acl = acl_get(path_p, acltype);
73 if (acl == NULL)
74 return (-1);
75
76 retval = acl_is_trivial_np(acl, &istrivial);
77 acl_free(acl);
78 if (retval == -1)
79 return (-1);
80
81 return (!istrivial);
82 }
83