1 /*- 2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * This software was developed by Robert Watson for the TrustedBSD Project. 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_valid -- POSIX.1e ACL check routine 30 */ 31 32 #include <sys/cdefs.h> 33 __FBSDID("$FreeBSD$"); 34 35 #include <sys/types.h> 36 #include "namespace.h" 37 #include <sys/acl.h> 38 #include "un-namespace.h" 39 #include <sys/errno.h> 40 #include <stdlib.h> 41 42 #include "acl_support.h" 43 44 /* 45 * acl_valid: accepts an ACL, returns 0 on valid ACL, -1 for invalid, 46 * and errno set to EINVAL. 47 * 48 * Implemented by calling the acl_check routine in acl_support, which 49 * requires ordering. We call acl_support's _posix1e_acl_sort to make this 50 * true. POSIX.1e allows acl_valid() to reorder the ACL as it sees fit. 51 * 52 * This call is deprecated, as it doesn't ask whether the ACL is valid 53 * for a particular target. However, this call is standardized, unlike 54 * the other two forms. 55 */ 56 int 57 acl_valid(acl_t acl) 58 { 59 int error; 60 61 if (acl == NULL) { 62 errno = EINVAL; 63 return (-1); 64 } 65 if (!_acl_brand_may_be(acl, ACL_BRAND_POSIX)) { 66 errno = EINVAL; 67 return (-1); 68 } 69 _posix1e_acl_sort(acl); 70 error = _posix1e_acl_check(acl); 71 if (error) { 72 errno = error; 73 return (-1); 74 } else { 75 return (0); 76 } 77 } 78 79 int 80 acl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl) 81 { 82 int error; 83 84 if (pathp == NULL || acl == NULL) { 85 errno = EINVAL; 86 return (-1); 87 } 88 type = _acl_type_unold(type); 89 if (_posix1e_acl(acl, type)) { 90 error = _posix1e_acl_sort(acl); 91 if (error) { 92 errno = error; 93 return (-1); 94 } 95 } 96 97 return (__acl_aclcheck_file(pathp, type, &acl->ats_acl)); 98 } 99 100 int 101 acl_valid_link_np(const char *pathp, acl_type_t type, acl_t acl) 102 { 103 int error; 104 105 if (pathp == NULL || acl == NULL) { 106 errno = EINVAL; 107 return (-1); 108 } 109 type = _acl_type_unold(type); 110 if (_posix1e_acl(acl, type)) { 111 error = _posix1e_acl_sort(acl); 112 if (error) { 113 errno = error; 114 return (-1); 115 } 116 } 117 118 return (__acl_aclcheck_link(pathp, type, &acl->ats_acl)); 119 } 120 121 int 122 acl_valid_fd_np(int fd, acl_type_t type, acl_t acl) 123 { 124 int error; 125 126 if (acl == NULL) { 127 errno = EINVAL; 128 return (-1); 129 } 130 type = _acl_type_unold(type); 131 if (_posix1e_acl(acl, type)) { 132 error = _posix1e_acl_sort(acl); 133 if (error) { 134 errno = error; 135 return (-1); 136 } 137 } 138 139 acl->ats_cur_entry = 0; 140 141 return (___acl_aclcheck_fd(fd, type, &acl->ats_acl)); 142 } 143