fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * The contents of this file are subject to the terms of the
893a6d32980d24be1349478f44169009d4801c25ahrens * Common Development and Distribution License (the "License").
893a6d32980d24be1349478f44169009d4801c25ahrens * You may not use this file except in compliance with the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * or http://www.opensolaris.org/os/licensing.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * When distributing Covered Code, include this CDDL HEADER in each
fa9e4066f08beec538e775443c5be79dd423fcabahrens * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
fa9e4066f08beec538e775443c5be79dd423fcabahrens * If applicable, add the following below this CDDL HEADER, with the
fa9e4066f08beec538e775443c5be79dd423fcabahrens * fields enclosed by brackets "[]" replaced with your own identifying
fa9e4066f08beec538e775443c5be79dd423fcabahrens * information: Portions Copyright [yyyy] [name of copyright owner]
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER END
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
27dd1e87cd3d939264769dd4af7e6a529cde001fMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifndef _SYS_FS_ZFS_VFSOPS_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define _SYS_FS_ZFS_VFSOPS_H
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/isa_defs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/types32.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/list.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/vfs.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens#include <sys/zil.h>
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaum#include <sys/sa.h>
f18faf3f3e5def85fdfff681617d227703ace2adek#include <sys/rrwlock.h>
de8267e0f723ed2c38ea9def92d465f69a300f56timh#include <sys/zfs_ioctl.h>
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern "C" {
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct zfsvfs zfsvfs_t;
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaumstruct znode;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrensstruct zfsvfs {
fa9e4066f08beec538e775443c5be79dd423fcabahrens vfs_t *z_vfs; /* generic fs struct */
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfsvfs_t *z_parent; /* parent fs */
fa9e4066f08beec538e775443c5be79dd423fcabahrens objset_t *z_os; /* objset reference */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t z_root; /* id of root znode */
893a6d32980d24be1349478f44169009d4801c25ahrens uint64_t z_unlinkedobj; /* id of unlinked zapobj */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t z_max_blksz; /* maximum block size for files */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw uint64_t z_fuid_obj; /* fuid table object number */
4c841f6070b4f88f9dc008de526b313bbebd4e32marks uint64_t z_fuid_size; /* fuid table size */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw avl_tree_t z_fuid_idx; /* fuid tree keyed by index */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw avl_tree_t z_fuid_domain; /* fuid tree keyed by domain */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw krwlock_t z_fuid_lock; /* fuid lock */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw boolean_t z_fuid_loaded; /* fuid tables are loaded */
89459e17032b6bb1d59eebd2b7c0d06859d4657cMark Shellenbaum boolean_t z_fuid_dirty; /* need to sync fuid table ? */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw struct zfs_fuid_info *z_fuid_replay; /* fuid info for replay */
fa9e4066f08beec538e775443c5be79dd423fcabahrens zilog_t *z_log; /* intent log pointer */
a3c49ce110f325a563c245bedc4d533adddb7211Albert Lee uint_t z_acl_mode; /* acl chmod/mode behavior */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint_t z_acl_inherit; /* acl inheritance behavior */
de8267e0f723ed2c38ea9def92d465f69a300f56timh zfs_case_t z_case; /* case-sense */
de8267e0f723ed2c38ea9def92d465f69a300f56timh boolean_t z_utf8; /* utf8-only */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw int z_norm; /* normalization flags */
fa9e4066f08beec538e775443c5be79dd423fcabahrens boolean_t z_atime; /* enable atimes mount option */
91ebeef555ce7f899b6270a3c2df47b51f7ad59aahrens boolean_t z_unmounted; /* unmounted */
c9030f6c93613fe30ee0c16f92b96da7816ac052Alexander Motin rrmlock_t z_teardown_lock;
f18faf3f3e5def85fdfff681617d227703ace2adek krwlock_t z_teardown_inactive_lock;
fa9e4066f08beec538e775443c5be79dd423fcabahrens list_t z_all_znodes; /* all vnodes in the fs */
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmutex_t z_znodes_lock; /* lock for z_all_znodes */
fa9e4066f08beec538e775443c5be79dd423fcabahrens vnode_t *z_ctldir; /* .zfs directory pointer */
fa9e4066f08beec538e775443c5be79dd423fcabahrens boolean_t z_show_ctldir; /* expose .zfs in the root dir */
fa9e4066f08beec538e775443c5be79dd423fcabahrens boolean_t z_issnap; /* true if this is a snapshot */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw boolean_t z_vscan; /* virus scan on/off */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw boolean_t z_use_fuids; /* version allows fuids */
1209a471b5681c43d839d4b890f708f500da7346Neil Perrin boolean_t z_replay; /* set during ZIL replay */
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaum boolean_t z_use_sa; /* version allow system attributes */
47f263f4211a47222fcc65b18b0cfa06d33f3c33ek uint64_t z_version; /* ZPL version */
743a77ed89085d3c232c4a2f65ab4e19576839e2Alan Wright uint64_t z_shares_dir; /* hidden shares dir */
9e1320c015cea6985d2122bc1d654b79fa479f7aMark Shellenbaum kmutex_t z_lock;
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrens uint64_t z_userquota_obj;
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrens uint64_t z_groupquota_obj;
c0e50c98ecbf7fb0783a0091a1077922afe09138Neil Perrin uint64_t z_replay_eof; /* New end of file - replay only */
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaum sa_attr_type_t *z_attr_table; /* SA attr mapping->id */
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define ZFS_OBJ_MTX_SZ 64
fa9e4066f08beec538e775443c5be79dd423fcabahrens kmutex_t z_hold_mtx[ZFS_OBJ_MTX_SZ]; /* znode hold locks */
fa9e4066f08beec538e775443c5be79dd423fcabahrens};
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens/*
75519f380eac71fe6d10b26e736f01567d6c13c9ek * Normal filesystems (those not under .zfs/snapshot) have a total
75519f380eac71fe6d10b26e736f01567d6c13c9ek * file ID size limited to 12 bytes (including the length field) due to
75519f380eac71fe6d10b26e736f01567d6c13c9ek * NFSv2 protocol's limitation of 32 bytes for a filehandle. For historical
75519f380eac71fe6d10b26e736f01567d6c13c9ek * reasons, this same limit is being imposed by the Solaris NFSv3 implementation
75519f380eac71fe6d10b26e736f01567d6c13c9ek * (although the NFSv3 protocol actually permits a maximum of 64 bytes). It
75519f380eac71fe6d10b26e736f01567d6c13c9ek * is not possible to expand beyond 12 bytes without abandoning support
75519f380eac71fe6d10b26e736f01567d6c13c9ek * of NFSv2.
fa9e4066f08beec538e775443c5be79dd423fcabahrens *
75519f380eac71fe6d10b26e736f01567d6c13c9ek * For normal filesystems, we partition up the available space as follows:
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 2 bytes fid length (required)
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 6 bytes object number (48 bits)
fa9e4066f08beec538e775443c5be79dd423fcabahrens * 4 bytes generation number (32 bits)
75519f380eac71fe6d10b26e736f01567d6c13c9ek *
fa9e4066f08beec538e775443c5be79dd423fcabahrens * We reserve only 48 bits for the object number, as this is the limit
fa9e4066f08beec538e775443c5be79dd423fcabahrens * currently defined and imposed by the DMU.
fa9e4066f08beec538e775443c5be79dd423fcabahrens */
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct zfid_short {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint16_t zf_len;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint8_t zf_object[6]; /* obj[i] = obj >> (8 * i) */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint8_t zf_gen[4]; /* gen[i] = gen >> (8 * i) */
fa9e4066f08beec538e775443c5be79dd423fcabahrens} zfid_short_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
75519f380eac71fe6d10b26e736f01567d6c13c9ek/*
75519f380eac71fe6d10b26e736f01567d6c13c9ek * Filesystems under .zfs/snapshot have a total file ID size of 22 bytes
75519f380eac71fe6d10b26e736f01567d6c13c9ek * (including the length field). This makes files under .zfs/snapshot
75519f380eac71fe6d10b26e736f01567d6c13c9ek * accessible by NFSv3 and NFSv4, but not NFSv2.
75519f380eac71fe6d10b26e736f01567d6c13c9ek *
75519f380eac71fe6d10b26e736f01567d6c13c9ek * For files under .zfs/snapshot, we partition up the available space
75519f380eac71fe6d10b26e736f01567d6c13c9ek * as follows:
75519f380eac71fe6d10b26e736f01567d6c13c9ek * 2 bytes fid length (required)
75519f380eac71fe6d10b26e736f01567d6c13c9ek * 6 bytes object number (48 bits)
75519f380eac71fe6d10b26e736f01567d6c13c9ek * 4 bytes generation number (32 bits)
75519f380eac71fe6d10b26e736f01567d6c13c9ek * 6 bytes objset id (48 bits)
75519f380eac71fe6d10b26e736f01567d6c13c9ek * 4 bytes currently just zero (32 bits)
75519f380eac71fe6d10b26e736f01567d6c13c9ek *
75519f380eac71fe6d10b26e736f01567d6c13c9ek * We reserve only 48 bits for the object number and objset id, as these are
75519f380eac71fe6d10b26e736f01567d6c13c9ek * the limits currently defined and imposed by the DMU.
75519f380eac71fe6d10b26e736f01567d6c13c9ek */
fa9e4066f08beec538e775443c5be79dd423fcabahrenstypedef struct zfid_long {
fa9e4066f08beec538e775443c5be79dd423fcabahrens zfid_short_t z_fid;
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint8_t zf_setid[6]; /* obj[i] = obj >> (8 * i) */
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint8_t zf_setgen[4]; /* gen[i] = gen >> (8 * i) */
fa9e4066f08beec538e775443c5be79dd423fcabahrens} zfid_long_t;
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define SHORT_FID_LEN (sizeof (zfid_short_t) - sizeof (uint16_t))
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define LONG_FID_LEN (sizeof (zfid_long_t) - sizeof (uint16_t))
fa9e4066f08beec538e775443c5be79dd423fcabahrens
ec533521f091387e2911769818ae4be26219fca2frextern uint_t zfs_fsyncer_key;
ec533521f091387e2911769818ae4be26219fca2fr
503ad85c168c7992ccc310af845a581cff3c72b5Matthew Ahrensextern int zfs_suspend_fs(zfsvfs_t *zfsvfs);
690041b9caf801816f2d0bac90bc7cecefb73523Andriy Gaponextern int zfs_resume_fs(zfsvfs_t *zfsvfs, struct dsl_dataset *ds);
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrensextern int zfs_userspace_one(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrens const char *domain, uint64_t rid, uint64_t *valuep);
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrensextern int zfs_userspace_many(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrens uint64_t *cookiep, void *vbuf, uint64_t *bufsizep);
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrensextern int zfs_set_userquota(zfsvfs_t *zfsvfs, zfs_userquota_prop_t type,
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrens const char *domain, uint64_t rid, uint64_t quota);
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaumextern boolean_t zfs_owner_overquota(zfsvfs_t *zfsvfs, struct znode *,
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaum boolean_t isgroup);
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaumextern boolean_t zfs_fuid_overquota(zfsvfs_t *zfsvfs, boolean_t isgroup,
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaum uint64_t fuid);
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrensextern int zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroeextern int zfsvfs_create(const char *name, zfsvfs_t **zfvp);
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrensextern void zfsvfs_free(zfsvfs_t *zfsvfs);
4201a95e0468170d576f82c3aa63afecf718497aRic Aleshireextern int zfs_check_global_label(const char *dsname, const char *hexsl);
f18faf3f3e5def85fdfff681617d227703ace2adek
fa9e4066f08beec538e775443c5be79dd423fcabahrens#ifdef __cplusplus
fa9e4066f08beec538e775443c5be79dd423fcabahrens}
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif
fa9e4066f08beec538e775443c5be79dd423fcabahrens
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif /* _SYS_FS_ZFS_VFSOPS_H */