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 _posix1e_acl_sort(acl); 66 error = _posix1e_acl_check(acl); 67 if (error) { 68 errno = error; 69 return (-1); 70 } else { 71 return (0); 72 } 73 } 74 75 int 76 acl_valid_file_np(const char *pathp, acl_type_t type, acl_t acl) 77 { 78 int error; 79 80 if (pathp == NULL || acl == NULL) { 81 errno = EINVAL; 82 return (-1); 83 } 84 if (_posix1e_acl(acl, type)) { 85 error = _posix1e_acl_sort(acl); 86 if (error) { 87 errno = error; 88 return (-1); 89 } 90 } 91 92 return (__acl_aclcheck_file(pathp, type, &acl->ats_acl)); 93 } 94 95 int 96 acl_valid_link_np(const char *pathp, acl_type_t type, acl_t acl) 97 { 98 int error; 99 100 if (pathp == NULL || acl == NULL) { 101 errno = EINVAL; 102 return (-1); 103 } 104 if (_posix1e_acl(acl, type)) { 105 error = _posix1e_acl_sort(acl); 106 if (error) { 107 errno = error; 108 return (-1); 109 } 110 } 111 112 return (__acl_aclcheck_link(pathp, type, &acl->ats_acl)); 113 } 114 115 int 116 acl_valid_fd_np(int fd, acl_type_t type, acl_t acl) 117 { 118 int error; 119 120 if (acl == NULL) { 121 errno = EINVAL; 122 return (-1); 123 } 124 if (_posix1e_acl(acl, type)) { 125 error = _posix1e_acl_sort(acl); 126 if (error) { 127 errno = error; 128 return (-1); 129 } 130 } 131 132 acl->ats_cur_entry = 0; 133 134 135 return (___acl_aclcheck_fd(fd, type, &acl->ats_acl)); 136 } 137