168 lines
6.3 KiB
C
168 lines
6.3 KiB
C
/*
|
|
* 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) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
*/
|
|
|
|
#ifndef _SYS_FS_ZFS_VFSOPS_H
|
|
#define _SYS_FS_ZFS_VFSOPS_H
|
|
|
|
#include <sys/isa_defs.h>
|
|
#include <sys/types32.h>
|
|
#include <sys/list.h>
|
|
#include <sys/vfs.h>
|
|
#include <sys/zil.h>
|
|
#include <sys/sa.h>
|
|
#include <sys/rrwlock.h>
|
|
#include <sys/zfs_ioctl.h>
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
typedef struct zfsvfs zfsvfs_t;
|
|
struct znode;
|
|
|
|
struct zfsvfs {
|
|
vfs_t *z_vfs; /* generic fs struct */
|
|
zfsvfs_t *z_parent; /* parent fs */
|
|
objset_t *z_os; /* objset reference */
|
|
uint64_t z_root; /* id of root znode */
|
|
uint64_t z_unlinkedobj; /* id of unlinked zapobj */
|
|
uint64_t z_max_blksz; /* maximum block size for files */
|
|
uint64_t z_fuid_obj; /* fuid table object number */
|
|
uint64_t z_fuid_size; /* fuid table size */
|
|
avl_tree_t z_fuid_idx; /* fuid tree keyed by index */
|
|
avl_tree_t z_fuid_domain; /* fuid tree keyed by domain */
|
|
krwlock_t z_fuid_lock; /* fuid lock */
|
|
boolean_t z_fuid_loaded; /* fuid tables are loaded */
|
|
boolean_t z_fuid_dirty; /* need to sync fuid table ? */
|
|
struct zfs_fuid_info *z_fuid_replay; /* fuid info for replay */
|
|
zilog_t *z_log; /* intent log pointer */
|
|
uint_t z_acl_inherit; /* acl inheritance behavior */
|
|
zfs_case_t z_case; /* case-sense */
|
|
boolean_t z_utf8; /* utf8-only */
|
|
int z_norm; /* normalization flags */
|
|
boolean_t z_atime; /* enable atimes mount option */
|
|
boolean_t z_unmounted; /* unmounted */
|
|
rrwlock_t z_teardown_lock;
|
|
krwlock_t z_teardown_inactive_lock;
|
|
list_t z_all_znodes; /* all vnodes in the fs */
|
|
kmutex_t z_znodes_lock; /* lock for z_all_znodes */
|
|
vnode_t *z_ctldir; /* .zfs directory pointer */
|
|
boolean_t z_show_ctldir; /* expose .zfs in the root dir */
|
|
boolean_t z_issnap; /* true if this is a snapshot */
|
|
boolean_t z_vscan; /* virus scan on/off */
|
|
boolean_t z_use_fuids; /* version allows fuids */
|
|
boolean_t z_replay; /* set during ZIL replay */
|
|
boolean_t z_use_sa; /* version allow system attributes */
|
|
uint64_t z_version; /* ZPL version */
|
|
uint64_t z_shares_dir; /* hidden shares dir */
|
|
kmutex_t z_lock;
|
|
uint64_t z_userquota_obj;
|
|
uint64_t z_groupquota_obj;
|
|
uint64_t z_replay_eof; /* New end of file - replay only */
|
|
sa_attr_type_t *z_attr_table; /* SA attr mapping->id */
|
|
#define ZFS_OBJ_MTX_SZ 64
|
|
kmutex_t z_hold_mtx[ZFS_OBJ_MTX_SZ]; /* znode hold locks */
|
|
};
|
|
|
|
/*
|
|
* Normal filesystems (those not under .zfs/snapshot) have a total
|
|
* file ID size limited to 12 bytes (including the length field) due to
|
|
* NFSv2 protocol's limitation of 32 bytes for a filehandle. For historical
|
|
* reasons, this same limit is being imposed by the Solaris NFSv3 implementation
|
|
* (although the NFSv3 protocol actually permits a maximum of 64 bytes). It
|
|
* is not possible to expand beyond 12 bytes without abandoning support
|
|
* of NFSv2.
|
|
*
|
|
* For normal filesystems, we partition up the available space as follows:
|
|
* 2 bytes fid length (required)
|
|
* 6 bytes object number (48 bits)
|
|
* 4 bytes generation number (32 bits)
|
|
*
|
|
* We reserve only 48 bits for the object number, as this is the limit
|
|
* currently defined and imposed by the DMU.
|
|
*/
|
|
typedef struct zfid_short {
|
|
uint16_t zf_len;
|
|
uint8_t zf_object[6]; /* obj[i] = obj >> (8 * i) */
|
|
uint8_t zf_gen[4]; /* gen[i] = gen >> (8 * i) */
|
|
} zfid_short_t;
|
|
|
|
/*
|
|
* Filesystems under .zfs/snapshot have a total file ID size of 22 bytes
|
|
* (including the length field). This makes files under .zfs/snapshot
|
|
* accessible by NFSv3 and NFSv4, but not NFSv2.
|
|
*
|
|
* For files under .zfs/snapshot, we partition up the available space
|
|
* as follows:
|
|
* 2 bytes fid length (required)
|
|
* 6 bytes object number (48 bits)
|
|
* 4 bytes generation number (32 bits)
|
|
* 6 bytes objset id (48 bits)
|
|
* 4 bytes currently just zero (32 bits)
|
|
*
|
|
* We reserve only 48 bits for the object number and objset id, as these are
|
|
* the limits currently defined and imposed by the DMU.
|
|
*/
|
|
typedef struct zfid_long {
|
|
zfid_short_t z_fid;
|
|
uint8_t zf_setid[6]; /* obj[i] = obj >> (8 * i) */
|
|
uint8_t zf_setgen[4]; /* gen[i] = gen >> (8 * i) */
|
|
} zfid_long_t;
|
|
|
|
#define SHORT_FID_LEN (sizeof (zfid_short_t) - sizeof (uint16_t))
|
|
#define LONG_FID_LEN (sizeof (zfid_long_t) - sizeof (uint16_t))
|
|
|
|
extern uint_t zfs_fsyncer_key;
|
|
|
|
extern int zfs_suspend_fs(zfsvfs_t *zfsvfs);
|
|
extern int zfs_resume_fs(zfsvfs_t *zfsvfs, const char *osname);
|
|
extern int zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
|
|
const char *domain, uint64_t rid, uint64_t *valuep);
|
|
extern int zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
|
|
uint64_t *cookiep, void *vbuf, uint64_t *bufsizep);
|
|
extern int zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
|
|
const char *domain, uint64_t rid, uint64_t quota);
|
|
extern boolean_t zfs_owner_overquota(zfsvfs_t *zfsvfs, struct znode *,
|
|
boolean_t isgroup);
|
|
extern boolean_t zfs_fuid_overquota(zfsvfs_t *zfsvfs, boolean_t isgroup,
|
|
uint64_t fuid);
|
|
extern int zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers);
|
|
extern int zfsvfs_create(const char *name, zfsvfs_t **zfvp);
|
|
extern void zfsvfs_free(zfsvfs_t *zfsvfs);
|
|
extern int zfs_check_global_label(const char *dsname, const char *hexsl);
|
|
|
|
extern int zfs_register_callbacks(vfs_t *vfsp);
|
|
extern void zfs_unregister_callbacks(zfsvfs_t *zfsvfs);
|
|
extern int zfs_domount(vfs_t *vfsp, char *osname);
|
|
extern int zfs_umount(vfs_t *vfsp, int fflag, cred_t *cr);
|
|
extern int zfs_root(vfs_t *vfsp, vnode_t **vpp);
|
|
extern int zfs_statvfs(vfs_t *vfsp, struct statvfs64 *statp);
|
|
extern int zfs_vget(vfs_t *vfsp, vnode_t **vpp, fid_t *fidp);
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* _SYS_FS_ZFS_VFSOPS_H */
|