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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1993, 2010, Oracle and/or its affiliates. All rights reserved.
*/
#ifndef _SYS_FS_UFS_ACL_H
#define _SYS_FS_UFS_ACL_H
#include <sys/types.h>
#include <sys/cred.h>
#include <sys/vfs.h>
#include <sys/acl.h>
#include <sys/fs/ufs_fs.h>
#ifdef __cplusplus
extern "C" {
#endif
/*
* On-disk UFS ACL structure
*/
typedef struct ufs_acl {
union {
uint32_t acl_next; /* Pad for old structure */
ushort_t acl_tag; /* Entry type */
} acl_un;
o_mode_t acl_perm; /* Permission bits */
uid_t acl_who; /* User or group ID */
} ufs_acl_t;
#define acl_tag acl_un.acl_tag
#define acl_next acl_un.acl_next
/*
* In-core UFS ACL structure
*/
typedef struct ufs_ic_acl {
struct ufs_ic_acl *acl_ic_next; /* Next ACL for this inode */
o_mode_t acl_ic_perm; /* Permission bits */
uid_t acl_ic_who; /* User or group ID */
} ufs_ic_acl_t;
/*
* In-core ACL mask
*/
typedef struct ufs_aclmask {
short acl_ismask; /* Is mask defined? */
o_mode_t acl_maskbits; /* Permission mask */
} ufs_aclmask_t;
/*
* full acl
*/
typedef struct ic_acl {
ufs_ic_acl_t *owner; /* owner object */
ufs_ic_acl_t *group; /* group object */
ufs_ic_acl_t *other; /* other object */
ufs_ic_acl_t *users; /* list of users */
ufs_ic_acl_t *groups; /* list of groups */
ufs_aclmask_t mask; /* mask */
} ic_acl_t;
/*
* In-core shadow inode
*/
typedef struct si {
struct si *s_next; /* signature hash next */
struct si *s_forw; /* inode hash next */
struct si *s_fore; /* unref'd list next */
int s_flags; /* see below */
ino_t s_shadow; /* shadow inode number */
dev_t s_dev; /* device (major,minor) */
int s_signature; /* signature for all ACLs */
int s_use; /* on disk use count */
int s_ref; /* in core reference count */
krwlock_t s_lock; /* lock for this structure */
ic_acl_t s_a; /* acls */
ic_acl_t s_d; /* def acls */
} si_t;
#define aowner s_a.owner
#define agroup s_a.group
#define aother s_a.other
#define ausers s_a.users
#define agroups s_a.groups
#define aclass s_a.mask
#define downer s_d.owner
#define dgroup s_d.group
#define dother s_d.other
#define dusers s_d.users
#define dgroups s_d.groups
#define dclass s_d.mask
#define s_prev s_forw
/*
* s_flags
*/
#define SI_CACHED 0x0001 /* Is in si_cache */
/*
* Header to identify data on disk
*/
typedef struct ufs_fsd {
int fsd_type; /* type of data */
int fsd_size; /* size in bytes of ufs_fsd and data */
char fsd_data[1]; /* data */
} ufs_fsd_t;
/*
* Data types (fsd_type)
*/
#define FSD_FREE (0) /* Free entry */
#define FSD_ACL (1) /* Access Control Lists */
#define FSD_DFACL (2) /* reserved for future use */
#define FSD_RESERVED3 (3) /* reserved for future use */
#define FSD_RESERVED4 (4) /* reserved for future use */
#define FSD_RESERVED5 (5) /* reserved for future use */
#define FSD_RESERVED6 (6) /* reserved for future use */
#define FSD_RESERVED7 (7) /* reserved for future use */
/*
* FSD manipulation macros
* The FSD macros are aligned on integer boundary even if the preceeding
* record had a byte aligned length. So the record length is always
* integer length. All increments of the data pointers must use the
* FSD_RECSZ macro.
*/
#define FSD_TPSZ(fsdp) (sizeof (fsdp->fsd_type))
#define FSD_TPMSK(fsdp) (FSD_TPSZ(fsdp) - 1)
#define FSD_RECSZ(fsdp, size) ((size + FSD_TPMSK(fsdp)) & ~FSD_TPMSK(fsdp))
/*
* flags for acl_validate
*/
#define ACL_CHECK 0x01
#define DEF_ACL_CHECK 0x02
#define MODE_CHECK(O, M, PERM, C, I) \
secpolicy_vnode_access2(C, ITOV(I), O, (PERM), M)
/*
* Check that the file type is one that accepts ACLs
*/
#define CHECK_ACL_ALLOWED(MODE) (((MODE) == IFDIR) || ((MODE) == IFREG) || \
((MODE) == IFIFO) || ((MODE) == IFCHR) || \
((MODE) == IFBLK) || ((MODE) == IFATTRDIR))
/*
* Get ACL group permissions if the mask is not present, and the ACL
* group permission intersected with the mask if the mask is present
*/
#define MASK2MODE(ACL) \
((ACL)->aclass.acl_ismask ? \
((((ACL)->aclass.acl_maskbits & \
(ACL)->agroup->acl_ic_perm) & 07) << 3) : \
(((ACL)->agroup->acl_ic_perm & 07) << 3))
#define MODE2ACL(P, MODE, CRED) \
ASSERT((P)); \
(P)->acl_ic_next = NULL; \
(P)->acl_ic_perm &= ((MODE) & 7); \
(P)->acl_ic_who = (CRED);
#define ACL_MOVE(P, T, B) \
{ \
ufs_ic_acl_t *acl; \
for (acl = (P); acl; acl = acl->acl_ic_next) { \
(B)->acl_tag = (T); \
(B)->acl_perm = acl->acl_ic_perm; \
(B)->acl_who = acl->acl_ic_who; \
(B)++; \
} \
}
#ifdef __cplusplus
}
#endif
#endif /* _SYS_FS_UFS_ACL_H */
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