1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 5 * All rights reserved. 6 * 7 * This software was developed by Robert Watson for the TrustedBSD Project. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28 * SUCH DAMAGE. 29 */ 30 /* 31 * acl_valid -- POSIX.1e ACL check routine 32 */ 33 34 #include <sys/cdefs.h> 35 __FBSDID("$FreeBSD$"); 36 37 #include <sys/types.h> 38 #include "namespace.h" 39 #include <sys/acl.h> 40 #include "un-namespace.h" 41 #include <sys/errno.h> 42 #include <stdlib.h> 43 44 #include "acl_support.h" 45 46 /* 47 * acl_valid: accepts an ACL, returns 0 on valid ACL, -1 for invalid, 48 * and errno set to EINVAL. 49 * 50 * Implemented by calling the acl_check routine in acl_support, which 51 * requires ordering. We call acl_support's _posix1e_acl_sort to make this 52 * true. POSIX.1e allows acl_valid() to reorder the ACL as it sees fit. 53 * 54 * This call is deprecated, as it doesn't ask whether the ACL is valid 55 * for a particular target. However, this call is standardized, unlike 56 * the other two forms. 57 */ 58 int 59 acl_valid(acl_t acl) 60 { 61 int error; 62 63 if (acl == NULL) { 64 errno = EINVAL; 65 return (-1); 66 } 67 if (!_acl_brand_may_be(acl, ACL_BRAND_POSIX)) { 68 errno = EINVAL; 69 return (-1); 70 } 71 _posix1e_acl_sort(acl); 72 error = _posix1e_acl_check(acl); 73 if (error) { 74 errno = error; 75 return (-1); 76 } else { 77 return (0); 78 } 79 } 80 81 int 82 acl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl) 83 { 84 85 if (pathp == NULL || acl == NULL) { 86 errno = EINVAL; 87 return (-1); 88 } 89 type = _acl_type_unold(type); 90 if (_posix1e_acl(acl, type)) 91 _posix1e_acl_sort(acl); 92 93 return (__acl_aclcheck_file(pathp, type, &acl->ats_acl)); 94 } 95 96 int 97 acl_valid_link_np(const char *pathp, acl_type_t type, acl_t acl) 98 { 99 100 if (pathp == NULL || acl == NULL) { 101 errno = EINVAL; 102 return (-1); 103 } 104 type = _acl_type_unold(type); 105 if (_posix1e_acl(acl, type)) 106 _posix1e_acl_sort(acl); 107 108 return (__acl_aclcheck_link(pathp, type, &acl->ats_acl)); 109 } 110 111 int 112 acl_valid_fd_np(int fd, acl_type_t type, acl_t acl) 113 { 114 115 if (acl == NULL) { 116 errno = EINVAL; 117 return (-1); 118 } 119 type = _acl_type_unold(type); 120 if (_posix1e_acl(acl, type)) 121 _posix1e_acl_sort(acl); 122 123 acl->ats_cur_entry = 0; 124 125 return (___acl_aclcheck_fd(fd, type, &acl->ats_acl)); 126 } 127