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 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 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 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 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