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/types.h> 35 #include "namespace.h" 36 #include <sys/acl.h> 37 #include "un-namespace.h" 38 #include <sys/errno.h> 39 #include <stdlib.h> 40 41 #include "acl_support.h" 42 43 /* 44 * acl_valid: accepts an ACL, returns 0 on valid ACL, -1 for invalid, 45 * and errno set to EINVAL. 46 * 47 * Implemented by calling the acl_check routine in acl_support, which 48 * requires ordering. We call acl_support's _posix1e_acl_sort to make this 49 * true. POSIX.1e allows acl_valid() to reorder the ACL as it sees fit. 50 * 51 * This call is deprecated, as it doesn't ask whether the ACL is valid 52 * for a particular target. However, this call is standardized, unlike 53 * the other two forms. 54 */ 55 int 56 acl_valid(acl_t acl) 57 { 58 int error; 59 60 if (acl == NULL) { 61 errno = EINVAL; 62 return (-1); 63 } 64 if (!_acl_brand_may_be(acl, ACL_BRAND_POSIX)) { 65 errno = EINVAL; 66 return (-1); 67 } 68 _posix1e_acl_sort(acl); 69 error = _posix1e_acl_check(acl); 70 if (error) { 71 errno = error; 72 return (-1); 73 } else { 74 return (0); 75 } 76 } 77 78 int 79 acl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl) 80 { 81 82 if (pathp == NULL || acl == NULL) { 83 errno = EINVAL; 84 return (-1); 85 } 86 type = _acl_type_unold(type); 87 if (_posix1e_acl(acl, type)) 88 _posix1e_acl_sort(acl); 89 90 return (__acl_aclcheck_file(pathp, type, &acl->ats_acl)); 91 } 92 93 int 94 acl_valid_link_np(const char *pathp, acl_type_t type, acl_t acl) 95 { 96 97 if (pathp == NULL || acl == NULL) { 98 errno = EINVAL; 99 return (-1); 100 } 101 type = _acl_type_unold(type); 102 if (_posix1e_acl(acl, type)) 103 _posix1e_acl_sort(acl); 104 105 return (__acl_aclcheck_link(pathp, type, &acl->ats_acl)); 106 } 107 108 int 109 acl_valid_fd_np(int fd, acl_type_t type, acl_t acl) 110 { 111 112 if (acl == NULL) { 113 errno = EINVAL; 114 return (-1); 115 } 116 type = _acl_type_unold(type); 117 if (_posix1e_acl(acl, type)) 118 _posix1e_acl_sort(acl); 119 120 acl->ats_cur_entry = 0; 121 122 return (___acl_aclcheck_fd(fd, type, &acl->ats_acl)); 123 } 124