zfs_acl.h revision 1544:938876158511 
1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2006 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#ifndef	_SYS_FS_ZFS_ACL_H
27#define	_SYS_FS_ZFS_ACL_H
28
29#pragma ident	"%Z%%M%	%I%	%E% SMI"
30
31#ifdef _KERNEL
32#include <sys/isa_defs.h>
33#include <sys/types32.h>
34#endif
35#include <sys/acl.h>
36#include <sys/dmu.h>
37
38#ifdef	__cplusplus
39extern "C" {
40#endif
41
42struct znode_phys;
43
44#define	ACCESS_UNDETERMINED	-1
45
46#define	ACE_SLOT_CNT	6
47
48typedef struct zfs_znode_acl {
49	uint64_t	z_acl_extern_obj;	  /* ext acl pieces */
50	uint32_t	z_acl_count;		  /* Number of ACEs */
51	uint16_t	z_acl_version;		  /* acl version */
52	uint16_t	z_acl_pad;		  /* pad */
53	ace_t		z_ace_data[ACE_SLOT_CNT]; /* 6 standard ACEs */
54} zfs_znode_acl_t;
55
56#define	ACL_DATA_ALLOCED	0x1
57
58/*
59 * Max ACL size is prepended deny for all entries + the
60 * canonical six tacked on * the end.
61 */
62#define	MAX_ACL_SIZE	(MAX_ACL_ENTRIES * 2 + 6)
63
64typedef struct zfs_acl {
65	int		z_slots;	/* number of allocated slots for ACEs */
66	int		z_acl_count;
67	uint_t		z_state;
68	ace_t		*z_acl;
69} zfs_acl_t;
70
71#define	ZFS_ACL_SIZE(aclcnt)	(sizeof (ace_t) * (aclcnt))
72
73/*
74 * Property values for acl_mode and acl_inherit.
75 *
76 * acl_mode can take discard, noallow, groupmask and passthrough.
77 * whereas acl_inherit has secure instead of groupmask.
78 */
79
80#define	DISCARD		0
81#define	NOALLOW		1
82#define	GROUPMASK	2
83#define	PASSTHROUGH	3
84#define	SECURE		4
85
86struct znode;
87
88#ifdef _KERNEL
89void zfs_perm_init(struct znode *, struct znode *, int, vattr_t *,
90    dmu_tx_t *, cred_t *);
91int zfs_getacl(struct znode *, vsecattr_t *, cred_t *);
92int zfs_mode_update(struct znode *, uint64_t, dmu_tx_t  *);
93int zfs_setacl(struct znode *, vsecattr_t *, cred_t *);
94void zfs_acl_rele(void *);
95void zfs_ace_byteswap(ace_t *, int);
96extern int zfs_zaccess(struct znode *, int, cred_t *);
97extern int zfs_zaccess_rwx(struct znode *, mode_t, cred_t *);
98extern int zfs_acl_access(struct znode *, int, cred_t *);
99int zfs_acl_chmod_setattr(struct znode *, uint64_t, dmu_tx_t *);
100int zfs_zaccess_delete(struct znode *, struct znode *, cred_t *);
101int zfs_zaccess_rename(struct znode *, struct znode *,
102    struct znode *, struct znode *, cred_t *cr);
103int zfs_zaccess_v4_perm(struct znode *, int, cred_t *);
104void zfs_acl_free(zfs_acl_t *);
105
106#endif
107
108#ifdef	__cplusplus
109}
110#endif
111#endif	/* _SYS_FS_ZFS_ACL_H */
112