1 /*- 2 * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 /* 29 * acl_get_file - syscall wrapper for retrieving ACL by filename 30 * acl_get_fd - syscall wrapper for retrieving access ACL by fd 31 * acl_get_fd_np - syscall wrapper for retrieving ACL by fd (non-POSIX) 32 * acl_get_perm_np() checks if a permission is in the specified 33 * permset (non-POSIX) 34 * acl_get_permset() returns the permission set in the ACL entry 35 * acl_get_qualifier() retrieves the qualifier of the tag from the ACL entry 36 * acl_get_tag_type() returns the tag type for the ACL entry entry_d 37 */ 38 39 #include <sys/types.h> 40 #include "namespace.h" 41 #include <sys/acl.h> 42 #include "un-namespace.h" 43 44 #include <errno.h> 45 #include <stdlib.h> 46 #include <string.h> 47 48 acl_t 49 acl_get_file(const char *path_p, acl_type_t type) 50 { 51 struct acl *aclp; 52 int error; 53 54 aclp = acl_init(ACL_MAX_ENTRIES); 55 if (!aclp) { 56 return (NULL); 57 } 58 59 error = __acl_get_file(path_p, type, aclp); 60 if (error) { 61 acl_free(aclp); 62 return (NULL); 63 } 64 65 return (aclp); 66 } 67 68 acl_t 69 acl_get_fd(int fd) 70 { 71 struct acl *aclp; 72 int error; 73 74 aclp = acl_init(ACL_MAX_ENTRIES); 75 if (!aclp) { 76 return (NULL); 77 } 78 79 error = ___acl_get_fd(fd, ACL_TYPE_ACCESS, aclp); 80 if (error) { 81 acl_free(aclp); 82 return (NULL); 83 } 84 85 return (aclp); 86 } 87 88 acl_t 89 acl_get_fd_np(int fd, acl_type_t type) 90 { 91 struct acl *aclp; 92 int error; 93 94 aclp = acl_init(ACL_MAX_ENTRIES); 95 if (!aclp) { 96 return (NULL); 97 } 98 99 error = ___acl_get_fd(fd, type, aclp); 100 if (error) { 101 acl_free(aclp); 102 return (NULL); 103 } 104 105 return (aclp); 106 } 107 108 int 109 acl_get_perm_np(acl_permset_t permset_d, acl_perm_t perm) 110 { 111 112 switch(perm) { 113 case ACL_READ: 114 case ACL_WRITE: 115 case ACL_EXECUTE: 116 if (*permset_d & perm) 117 return 1; 118 break; 119 default: 120 errno = EINVAL; 121 return -1; 122 } 123 124 return 0; 125 } 126 127 int 128 acl_get_permset(acl_entry_t entry_d, acl_permset_t *permset_p) 129 { 130 131 if (!entry_d || !permset_p) { 132 errno = EINVAL; 133 return -1; 134 } 135 136 *permset_p = &entry_d->ae_perm; 137 138 return 0; 139 } 140 141 void * 142 acl_get_qualifier(acl_entry_t entry_d) 143 { 144 uid_t *retval; 145 146 if (!entry_d) { 147 errno = EINVAL; 148 return NULL; 149 } 150 151 switch(entry_d->ae_tag) { 152 case ACL_USER: 153 case ACL_GROUP: 154 retval = malloc(sizeof(uid_t)); 155 if (retval) { 156 *retval = entry_d->ae_id; 157 return retval; 158 } 159 } 160 161 errno = EINVAL; 162 return NULL; 163 } 164 165 int 166 acl_get_tag_type(acl_entry_t entry_d, acl_tag_t *tag_type_p) 167 { 168 169 if (!entry_d || !tag_type_p) { 170 errno = EINVAL; 171 return -1; 172 } 173 174 *tag_type_p = entry_d->ae_tag; 175 176 return 0; 177 } 178