author | Albert Lee <trisk@nexenta.com> |
Sat, 14 May 2011 00:29:13 -0400 | |
changeset 13370 | 8c04143bd318 |
parent 12772 | 71326a76a341 |
permissions | -rw-r--r-- |
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/* |
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* CDDL HEADER START |
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* |
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* The contents of this file are subject to the terms of the |
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* Common Development and Distribution License (the "License"). |
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* You may not use this file except in compliance with the License. |
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* |
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE |
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* or http://www.opensolaris.org/os/licensing. |
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* See the License for the specific language governing permissions |
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* and limitations under the License. |
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* |
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* When distributing Covered Code, include this CDDL HEADER in each |
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE. |
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* If applicable, add the following below this CDDL HEADER, with the |
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* fields enclosed by brackets "[]" replaced with your own identifying |
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* information: Portions Copyright [yyyy] [name of copyright owner] |
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* |
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* CDDL HEADER END |
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*/ |
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/* |
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* Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved. |
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*/ |
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#ifndef _SYS_FS_ZFS_VFSOPS_H |
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#define _SYS_FS_ZFS_VFSOPS_H |
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#include <sys/isa_defs.h> |
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#include <sys/types32.h> |
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#include <sys/list.h> |
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#include <sys/vfs.h> |
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#include <sys/zil.h> |
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#include <sys/sa.h> |
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#include <sys/rrwlock.h> |
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#include <sys/zfs_ioctl.h> |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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typedef struct zfsvfs zfsvfs_t; |
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struct znode; |
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struct zfsvfs { |
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vfs_t *z_vfs; /* generic fs struct */ |
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zfsvfs_t *z_parent; /* parent fs */ |
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objset_t *z_os; /* objset reference */ |
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uint64_t z_root; /* id of root znode */ |
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uint64_t z_unlinkedobj; /* id of unlinked zapobj */ |
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uint64_t z_max_blksz; /* maximum block size for files */ |
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uint64_t z_fuid_obj; /* fuid table object number */ |
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uint64_t z_fuid_size; /* fuid table size */ |
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avl_tree_t z_fuid_idx; /* fuid tree keyed by index */ |
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avl_tree_t z_fuid_domain; /* fuid tree keyed by domain */ |
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krwlock_t z_fuid_lock; /* fuid lock */ |
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boolean_t z_fuid_loaded; /* fuid tables are loaded */ |
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boolean_t z_fuid_dirty; /* need to sync fuid table ? */ |
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struct zfs_fuid_info *z_fuid_replay; /* fuid info for replay */ |
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zilog_t *z_log; /* intent log pointer */ |
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uint_t z_acl_mode; /* acl chmod/mode behavior */ |
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uint_t z_acl_inherit; /* acl inheritance behavior */ |
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zfs_case_t z_case; /* case-sense */ |
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boolean_t z_utf8; /* utf8-only */ |
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int z_norm; /* normalization flags */ |
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boolean_t z_atime; /* enable atimes mount option */ |
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boolean_t z_unmounted; /* unmounted */ |
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rrwlock_t z_teardown_lock; |
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krwlock_t z_teardown_inactive_lock; |
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list_t z_all_znodes; /* all vnodes in the fs */ |
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kmutex_t z_znodes_lock; /* lock for z_all_znodes */ |
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vnode_t *z_ctldir; /* .zfs directory pointer */ |
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boolean_t z_show_ctldir; /* expose .zfs in the root dir */ |
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boolean_t z_issnap; /* true if this is a snapshot */ |
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boolean_t z_vscan; /* virus scan on/off */ |
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boolean_t z_use_fuids; /* version allows fuids */ |
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boolean_t z_replay; /* set during ZIL replay */ |
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boolean_t z_use_sa; /* version allow system attributes */ |
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uint64_t z_version; /* ZPL version */ |
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uint64_t z_shares_dir; /* hidden shares dir */ |
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kmutex_t z_lock; |
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uint64_t z_userquota_obj; |
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uint64_t z_groupquota_obj; |
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uint64_t z_replay_eof; /* New end of file - replay only */ |
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sa_attr_type_t *z_attr_table; /* SA attr mapping->id */ |
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#define ZFS_OBJ_MTX_SZ 64 |
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kmutex_t z_hold_mtx[ZFS_OBJ_MTX_SZ]; /* znode hold locks */ |
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}; |
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/* |
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* Normal filesystems (those not under .zfs/snapshot) have a total |
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* file ID size limited to 12 bytes (including the length field) due to |
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* NFSv2 protocol's limitation of 32 bytes for a filehandle. For historical |
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* reasons, this same limit is being imposed by the Solaris NFSv3 implementation |
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* (although the NFSv3 protocol actually permits a maximum of 64 bytes). It |
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* is not possible to expand beyond 12 bytes without abandoning support |
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* of NFSv2. |
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* |
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* For normal filesystems, we partition up the available space as follows: |
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* 2 bytes fid length (required) |
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* 6 bytes object number (48 bits) |
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* 4 bytes generation number (32 bits) |
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* |
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* We reserve only 48 bits for the object number, as this is the limit |
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* currently defined and imposed by the DMU. |
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*/ |
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typedef struct zfid_short { |
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uint16_t zf_len; |
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uint8_t zf_object[6]; /* obj[i] = obj >> (8 * i) */ |
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uint8_t zf_gen[4]; /* gen[i] = gen >> (8 * i) */ |
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} zfid_short_t; |
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/* |
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* Filesystems under .zfs/snapshot have a total file ID size of 22 bytes |
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* (including the length field). This makes files under .zfs/snapshot |
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* accessible by NFSv3 and NFSv4, but not NFSv2. |
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* |
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* For files under .zfs/snapshot, we partition up the available space |
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* as follows: |
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* 2 bytes fid length (required) |
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* 6 bytes object number (48 bits) |
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* 4 bytes generation number (32 bits) |
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* 6 bytes objset id (48 bits) |
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* 4 bytes currently just zero (32 bits) |
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* |
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* We reserve only 48 bits for the object number and objset id, as these are |
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* the limits currently defined and imposed by the DMU. |
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*/ |
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typedef struct zfid_long { |
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zfid_short_t z_fid; |
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uint8_t zf_setid[6]; /* obj[i] = obj >> (8 * i) */ |
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uint8_t zf_setgen[4]; /* gen[i] = gen >> (8 * i) */ |
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} zfid_long_t; |
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#define SHORT_FID_LEN (sizeof (zfid_short_t) - sizeof (uint16_t)) |
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#define LONG_FID_LEN (sizeof (zfid_long_t) - sizeof (uint16_t)) |
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extern uint_t zfs_fsyncer_key; |
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extern int zfs_suspend_fs(zfsvfs_t *zfsvfs); |
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extern int zfs_resume_fs(zfsvfs_t *zfsvfs, const char *osname); |
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extern int zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
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const char *domain, uint64_t rid, uint64_t *valuep); |
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extern int zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
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uint64_t *cookiep, void *vbuf, uint64_t *bufsizep); |
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extern int zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type, |
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const char *domain, uint64_t rid, uint64_t quota); |
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extern boolean_t zfs_owner_overquota(zfsvfs_t *zfsvfs, struct znode *, |
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boolean_t isgroup); |
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extern boolean_t zfs_fuid_overquota(zfsvfs_t *zfsvfs, boolean_t isgroup, |
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uint64_t fuid); |
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extern int zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers); |
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extern int zfsvfs_create(const char *name, zfsvfs_t **zfvp); |
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extern void zfsvfs_free(zfsvfs_t *zfsvfs); |
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extern int zfs_check_global_label(const char *dsname, const char *hexsl); |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* _SYS_FS_ZFS_VFSOPS_H */ |