1 /*- 2 * Copyright (c) 1999, 2000 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: src/sys/sys/acl.h,v 1.8 2000/01/28 15:22:51 rwatson Exp $ 27 */ 28 29 /* 30 * Userland/kernel interface for Access Control Lists. 31 * 32 * The POSIX.1e implementation page may be reached at: 33 * http://www.watson.org/fbsd-hardening/posix1e/ 34 */ 35 36 #ifndef _SYS_ACL_H_ 37 #define _SYS_ACL_H_ 38 39 #ifndef _SYS_TYPES_H_ 40 #include <sys/types.h> 41 #endif 42 43 /* 44 * POSIX.1e ACL types and related constants 45 */ 46 47 #define ACL_MAX_ENTRIES 32 /* maximum entries in an ACL */ 48 #define _POSIX_ACL_PATH_MAX ACL_MAX_ENTRIES 49 50 typedef int acl_type_t; 51 typedef int acl_tag_t; 52 typedef mode_t acl_perm_t; 53 54 struct acl_entry { 55 acl_tag_t ae_tag; 56 uid_t ae_id; 57 acl_perm_t ae_perm; 58 }; 59 typedef struct acl_entry *acl_entry_t; 60 61 struct acl { 62 int acl_cnt; 63 struct acl_entry acl_entry[ACL_MAX_ENTRIES]; 64 }; 65 typedef struct acl *acl_t; 66 67 /* 68 * Possible valid values for a_tag of acl_entry_t 69 */ 70 #define ACL_USER_OBJ 0x00000001 71 #define ACL_USER 0x00000002 72 #define ACL_GROUP_OBJ 0x00000004 73 #define ACL_GROUP 0x00000008 74 #define ACL_MASK 0x00000010 75 #define ACL_OTHER 0x00000020 76 #define ACL_OTHER_OBJ ACL_OTHER 77 78 /* 79 * Possible valid values a_type_t arguments 80 */ 81 #define ACL_TYPE_ACCESS 0x00000000 82 #define ACL_TYPE_DEFAULT 0x00000001 83 #define ACL_TYPE_AFS 0x00000002 84 #define ACL_TYPE_CODA 0x00000003 85 #define ACL_TYPE_NTFS 0x00000004 86 87 /* 88 * Possible flags in a_perm field 89 */ 90 #define ACL_PERM_EXEC 0x0001 91 #define ACL_PERM_WRITE 0x0002 92 #define ACL_PERM_READ 0x0004 93 #define ACL_PERM_NONE 0x0000 94 #define ACL_PERM_BITS (ACL_PERM_EXEC | ACL_PERM_WRITE | ACL_PERM_READ) 95 #define ACL_POSIX1E_BITS (ACL_PERM_EXEC | ACL_PERM_WRITE | ACL_PERM_READ) 96 97 #ifndef _KERNEL 98 99 /* 100 * Syscall interface -- use the library calls instead as the syscalls 101 * have strict acl entry ordering requirements 102 */ 103 __BEGIN_DECLS 104 int __acl_aclcheck_fd(int, acl_type_t, struct acl *); 105 int __acl_aclcheck_file(const char *, acl_type_t, struct acl *); 106 int __acl_delete_fd(int, acl_type_t); 107 int __acl_delete_file(const char *, acl_type_t); 108 int __acl_get_fd(int, acl_type_t, struct acl *); 109 int __acl_get_file(const char *, acl_type_t, struct acl *); 110 int __acl_set_fd(int, acl_type_t, struct acl *); 111 int __acl_set_file(const char *, acl_type_t, struct acl *); 112 __END_DECLS 113 114 /* 115 * Supported POSIX.1e ACL manipulation and assignment/retrieval API 116 * _np calls are local extensions that reflect an environment capable of 117 * opening file descriptors of directories, and allowing additional 118 * ACL type for different file systems (i.e., AFS) 119 */ 120 __BEGIN_DECLS 121 int acl_delete_fd_np(int, acl_type_t); 122 int acl_delete_file_np(const char *, acl_type_t); 123 int acl_delete_def_file(const char *); 124 acl_t acl_dup(acl_t); 125 int acl_free(void *); 126 acl_t acl_from_text(const char *); 127 acl_t acl_get_fd(int); 128 acl_t acl_get_fd_np(int, acl_type_t); 129 acl_t acl_get_file(const char *, acl_type_t); 130 acl_t acl_init(int); 131 int acl_set_fd(int, acl_t); 132 int acl_set_fd_np(int, acl_t, acl_type_t); 133 int acl_set_file(const char *, acl_type_t, acl_t); 134 char *acl_to_text(acl_t, ssize_t *); 135 int acl_valid(acl_t); 136 int acl_valid_fd_np(int, acl_type_t, acl_t); 137 int acl_valid_file_np(const char *, acl_type_t, acl_t); 138 __END_DECLS 139 140 #endif /* !_KERNEL */ 141 142 #endif /* !_SYS_ACL_H_ */ 143