2 * Copyright (c) 1999, 2000, 2001 Robert N. M. Watson
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
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
29 * Developed by the TrustedBSD Project.
30 * Support for POSIX.1e access control lists.
37 * POSIX.1e ACL types and related constants.
40 #define POSIX1E_ACL_ACCESS_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
41 #define POSIX1E_ACL_ACCESS_EXTATTR_NAME "posix1e.acl_access"
42 #define POSIX1E_ACL_DEFAULT_EXTATTR_NAMESPACE EXTATTR_NAMESPACE_SYSTEM
43 #define POSIX1E_ACL_DEFAULT_EXTATTR_NAME "posix1e.acl_default"
44 #define ACL_MAX_ENTRIES 32 /* maximum entries in an ACL */
45 #define _POSIX_ACL_PATH_MAX ACL_MAX_ENTRIES
47 typedef int acl_type_t;
48 typedef int acl_tag_t;
49 typedef mode_t acl_perm_t;
50 typedef mode_t *acl_permset_t;
57 typedef struct acl_entry *acl_entry_t;
59 /* internal ACL structure */
62 struct acl_entry acl_entry[ACL_MAX_ENTRIES];
65 /* external ACL structure */
70 typedef struct acl_t_struct *acl_t;
73 * Possible valid values for ae_tag field.
75 #define ACL_UNDEFINED_TAG 0x00000000
76 #define ACL_USER_OBJ 0x00000001
77 #define ACL_USER 0x00000002
78 #define ACL_GROUP_OBJ 0x00000004
79 #define ACL_GROUP 0x00000008
80 #define ACL_MASK 0x00000010
81 #define ACL_OTHER 0x00000020
82 #define ACL_OTHER_OBJ ACL_OTHER
85 * Possible valid values for acl_type_t arguments.
87 #define ACL_TYPE_ACCESS 0x00000000
88 #define ACL_TYPE_DEFAULT 0x00000001
89 #define ACL_TYPE_AFS 0x00000002
90 #define ACL_TYPE_CODA 0x00000003
91 #define ACL_TYPE_NTFS 0x00000004
92 #define ACL_TYPE_NWFS 0x00000005
95 * Possible flags in ae_perm field.
97 #define ACL_EXECUTE 0x0001
98 #define ACL_WRITE 0x0002
99 #define ACL_READ 0x0004
100 #define ACL_PERM_NONE 0x0000
101 #define ACL_PERM_BITS (ACL_EXECUTE | ACL_WRITE | ACL_READ)
102 #define ACL_POSIX1E_BITS (ACL_EXECUTE | ACL_WRITE | ACL_READ)
105 * Possible entry_id values for acl_get_entry()
107 #define ACL_FIRST_ENTRY 0
108 #define ACL_NEXT_ENTRY 1
111 * Undefined value in ae_id field
113 #define ACL_UNDEFINED_ID ((uid_t)-1)
119 * Storage for ACLs and support structures.
121 #ifdef MALLOC_DECLARE
122 MALLOC_DECLARE(M_ACL);
125 acl_perm_t acl_posix1e_mode_to_perm __P((acl_tag_t tag, mode_t mode));
126 struct acl_entry acl_posix1e_mode_to_entry __P((acl_tag_t tag, uid_t uid,
127 gid_t gid, mode_t mode));
128 mode_t acl_posix1e_perms_to_mode __P((struct acl_entry *acl_user_obj_entry,
129 struct acl_entry *acl_group_obj_entry, struct acl_entry *acl_other_entry));
130 int acl_posix1e_check(struct acl *acl);
135 * Syscall interface -- use the library calls instead as the syscalls
136 * have strict acl entry ordering requirements.
139 int __acl_aclcheck_fd(int _filedes, acl_type_t _type, struct acl *_aclp);
140 int __acl_aclcheck_file(const char *_path, acl_type_t _type,
142 int __acl_delete_fd(int _filedes, acl_type_t _type);
143 int __acl_delete_file(const char *_path_p, acl_type_t _type);
144 int __acl_get_fd(int _filedes, acl_type_t _type, struct acl *_aclp);
145 int __acl_get_file(const char *_path, acl_type_t _type, struct acl *_aclp);
146 int __acl_set_fd(int _filedes, acl_type_t _type, struct acl *_aclp);
147 int __acl_set_file(const char *_path, acl_type_t _type, struct acl *_aclp);
151 * Supported POSIX.1e ACL manipulation and assignment/retrieval API
152 * _np calls are local extensions that reflect an environment capable of
153 * opening file descriptors of directories, and allowing additional
154 * ACL type for different file systems (i.e., AFS).
157 int acl_add_perm(acl_permset_t _permset_d, acl_perm_t _perm);
158 int acl_calc_mask(acl_t *_acl_p);
159 int acl_clear_perms(acl_permset_t _permset_d);
160 int acl_copy_entry(acl_entry_t _dest_d, acl_entry_t _src_d);
161 ssize_t acl_copy_ext(void *_buf_p, acl_t _acl, ssize_t _size);
162 acl_t acl_copy_int(const void *_buf_p);
163 int acl_create_entry(acl_t *_acl_p, acl_entry_t *_entry_p);
164 int acl_delete_fd_np(int _filedes, acl_type_t _type);
165 int acl_delete_entry(acl_t _acl, acl_entry_t _entry_d);
166 int acl_delete_file_np(const char *_path_p, acl_type_t _type);
167 int acl_delete_def_file(const char *_path_p);
168 int acl_delete_perm(acl_permset_t _permset_d, acl_perm_t _perm);
169 acl_t acl_dup(acl_t _acl);
170 int acl_free(void *_obj_p);
171 acl_t acl_from_text(const char *_buf_p);
172 int acl_get_entry(acl_t _acl, int _entry_id, acl_entry_t *_entry_p);
173 acl_t acl_get_fd(int _fd);
174 acl_t acl_get_fd_np(int fd, acl_type_t _type);
175 acl_t acl_get_file(const char *_path_p, acl_type_t _type);
176 void *acl_get_qualifier(acl_entry_t _entry_d);
177 int acl_get_perm_np(acl_permset_t _permset_d, acl_perm_t _perm);
178 int acl_get_permset(acl_entry_t _entry_d, acl_permset_t *_permset_p);
179 int acl_get_tag_type(acl_entry_t _entry_d, acl_tag_t *_tag_type_p);
180 acl_t acl_init(int _count);
181 int acl_set_fd(int _fd, acl_t _acl);
182 int acl_set_fd_np(int _fd, acl_t _acl, acl_type_t _type);
183 int acl_set_file(const char *_path_p, acl_type_t _type, acl_t _acl);
184 int acl_set_permset(acl_entry_t _entry_d, acl_permset_t _permset_d);
185 int acl_set_qualifier(acl_entry_t _entry_d, const void *_tag_qualifier_p);
186 int acl_set_tag_type(acl_entry_t _entry_d, acl_tag_t _tag_type);
187 ssize_t acl_size(acl_t _acl);
188 char *acl_to_text(acl_t _acl, ssize_t *_len_p);
189 int acl_valid(acl_t _acl);
190 int acl_valid_fd_np(int _fd, acl_type_t _type, acl_t _acl);
191 int acl_valid_file_np(const char *_path_p, acl_type_t _type, acl_t _acl);
194 #endif /* !_KERNEL */
196 #endif /* !_SYS_ACL_H */