fa9e4066f08beec538e775443c5be79dd423fcabahrens * CDDL HEADER START
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 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
fa9e4066f08beec538e775443c5be79dd423fcabahrens * See the License for the specific language governing permissions
fa9e4066f08beec538e775443c5be79dd423fcabahrens * and limitations under the License.
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 * CDDL HEADER END
27dd1e87cd3d939264769dd4af7e6a529cde001fMark Shellenbaum * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
fa9e4066f08beec538e775443c5be79dd423fcabahrensextern "C" {
fa9e4066f08beec538e775443c5be79dd423fcabahrens uint64_t z_max_blksz; /* maximum block size for files */
da6c28aaf62fa55f0fdb8004aa40f88f23bf53f0amw avl_tree_t z_fuid_domain; /* fuid tree keyed by domain */
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 boolean_t z_show_ctldir; /* expose .zfs in the root dir */
0a586cea3ceec7e5e50e7e54c745082a7a333ac2Mark Shellenbaum boolean_t z_use_sa; /* version allow system attributes */
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 kmutex_t z_hold_mtx[ZFS_OBJ_MTX_SZ]; /* znode hold locks */
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.
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)
fa9e4066f08beec538e775443c5be79dd423fcabahrens * We reserve only 48 bits for the object number, as this is the limit
fa9e4066f08beec538e775443c5be79dd423fcabahrens * currently defined and imposed by the DMU.
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 * 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 * 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.
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define SHORT_FID_LEN (sizeof (zfid_short_t) - sizeof (uint16_t))
fa9e4066f08beec538e775443c5be79dd423fcabahrens#define LONG_FID_LEN (sizeof (zfid_long_t) - sizeof (uint16_t))
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 Shellenbaumextern boolean_t zfs_fuid_overquota(zfsvfs_t *zfsvfs, boolean_t isgroup,
148434217c040ea38dc844384f6ba68d9b325906Matthew Ahrensextern int zfs_set_version(zfsvfs_t *zfsvfs, uint64_t newvers);
af4c679f647cf088543c762e33d41a3ac52cfa14Sean McEnroeextern int zfsvfs_create(const char *name, zfsvfs_t **zfvp);
4201a95e0468170d576f82c3aa63afecf718497aRic Aleshireextern int zfs_check_global_label(const char *dsname, const char *hexsl);
fa9e4066f08beec538e775443c5be79dd423fcabahrens#endif /* _SYS_FS_ZFS_VFSOPS_H */