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-rw-r--r--uts/common/fs/zfs/sys/dmu_objset.h183
1 files changed, 183 insertions, 0 deletions
diff --git a/uts/common/fs/zfs/sys/dmu_objset.h b/uts/common/fs/zfs/sys/dmu_objset.h
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index 000000000000..c6d202e2e81a
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+++ b/uts/common/fs/zfs/sys/dmu_objset.h
@@ -0,0 +1,183 @@
+/*
+ * 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.
+ */
+
+/* Portions Copyright 2010 Robert Milkowski */
+
+#ifndef _SYS_DMU_OBJSET_H
+#define _SYS_DMU_OBJSET_H
+
+#include <sys/spa.h>
+#include <sys/arc.h>
+#include <sys/txg.h>
+#include <sys/zfs_context.h>
+#include <sys/dnode.h>
+#include <sys/zio.h>
+#include <sys/zil.h>
+#include <sys/sa.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+extern krwlock_t os_lock;
+
+struct dsl_dataset;
+struct dmu_tx;
+
+#define OBJSET_PHYS_SIZE 2048
+#define OBJSET_OLD_PHYS_SIZE 1024
+
+#define OBJSET_BUF_HAS_USERUSED(buf) \
+ (arc_buf_size(buf) > OBJSET_OLD_PHYS_SIZE)
+
+#define OBJSET_FLAG_USERACCOUNTING_COMPLETE (1ULL<<0)
+
+typedef struct objset_phys {
+ dnode_phys_t os_meta_dnode;
+ zil_header_t os_zil_header;
+ uint64_t os_type;
+ uint64_t os_flags;
+ char os_pad[OBJSET_PHYS_SIZE - sizeof (dnode_phys_t)*3 -
+ sizeof (zil_header_t) - sizeof (uint64_t)*2];
+ dnode_phys_t os_userused_dnode;
+ dnode_phys_t os_groupused_dnode;
+} objset_phys_t;
+
+struct objset {
+ /* Immutable: */
+ struct dsl_dataset *os_dsl_dataset;
+ spa_t *os_spa;
+ arc_buf_t *os_phys_buf;
+ objset_phys_t *os_phys;
+ /*
+ * The following "special" dnodes have no parent and are exempt from
+ * dnode_move(), but they root their descendents in this objset using
+ * handles anyway, so that all access to dnodes from dbufs consistently
+ * uses handles.
+ */
+ dnode_handle_t os_meta_dnode;
+ dnode_handle_t os_userused_dnode;
+ dnode_handle_t os_groupused_dnode;
+ zilog_t *os_zil;
+
+ /* can change, under dsl_dir's locks: */
+ uint8_t os_checksum;
+ uint8_t os_compress;
+ uint8_t os_copies;
+ uint8_t os_dedup_checksum;
+ uint8_t os_dedup_verify;
+ uint8_t os_logbias;
+ uint8_t os_primary_cache;
+ uint8_t os_secondary_cache;
+ uint8_t os_sync;
+
+ /* no lock needed: */
+ struct dmu_tx *os_synctx; /* XXX sketchy */
+ blkptr_t *os_rootbp;
+ zil_header_t os_zil_header;
+ list_t os_synced_dnodes;
+ uint64_t os_flags;
+
+ /* Protected by os_obj_lock */
+ kmutex_t os_obj_lock;
+ uint64_t os_obj_next;
+
+ /* Protected by os_lock */
+ kmutex_t os_lock;
+ list_t os_dirty_dnodes[TXG_SIZE];
+ list_t os_free_dnodes[TXG_SIZE];
+ list_t os_dnodes;
+ list_t os_downgraded_dbufs;
+
+ /* stuff we store for the user */
+ kmutex_t os_user_ptr_lock;
+ void *os_user_ptr;
+
+ /* SA layout/attribute registration */
+ sa_os_t *os_sa;
+};
+
+#define DMU_META_OBJSET 0
+#define DMU_META_DNODE_OBJECT 0
+#define DMU_OBJECT_IS_SPECIAL(obj) ((int64_t)(obj) <= 0)
+#define DMU_META_DNODE(os) ((os)->os_meta_dnode.dnh_dnode)
+#define DMU_USERUSED_DNODE(os) ((os)->os_userused_dnode.dnh_dnode)
+#define DMU_GROUPUSED_DNODE(os) ((os)->os_groupused_dnode.dnh_dnode)
+
+#define DMU_OS_IS_L2CACHEABLE(os) \
+ ((os)->os_secondary_cache == ZFS_CACHE_ALL || \
+ (os)->os_secondary_cache == ZFS_CACHE_METADATA)
+
+/* called from zpl */
+int dmu_objset_hold(const char *name, void *tag, objset_t **osp);
+int dmu_objset_own(const char *name, dmu_objset_type_t type,
+ boolean_t readonly, void *tag, objset_t **osp);
+void dmu_objset_rele(objset_t *os, void *tag);
+void dmu_objset_disown(objset_t *os, void *tag);
+int dmu_objset_from_ds(struct dsl_dataset *ds, objset_t **osp);
+
+int dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
+ void (*func)(objset_t *os, void *arg, cred_t *cr, dmu_tx_t *tx), void *arg);
+int dmu_objset_clone(const char *name, struct dsl_dataset *clone_origin,
+ uint64_t flags);
+int dmu_objset_destroy(const char *name, boolean_t defer);
+int dmu_objset_snapshot(char *fsname, char *snapname, char *tag,
+ struct nvlist *props, boolean_t recursive, boolean_t temporary, int fd);
+void dmu_objset_stats(objset_t *os, nvlist_t *nv);
+void dmu_objset_fast_stat(objset_t *os, dmu_objset_stats_t *stat);
+void dmu_objset_space(objset_t *os, uint64_t *refdbytesp, uint64_t *availbytesp,
+ uint64_t *usedobjsp, uint64_t *availobjsp);
+uint64_t dmu_objset_fsid_guid(objset_t *os);
+int dmu_objset_find(char *name, int func(const char *, void *), void *arg,
+ int flags);
+int dmu_objset_find_spa(spa_t *spa, const char *name,
+ int func(spa_t *, uint64_t, const char *, void *), void *arg, int flags);
+int dmu_objset_prefetch(const char *name, void *arg);
+void dmu_objset_byteswap(void *buf, size_t size);
+int dmu_objset_evict_dbufs(objset_t *os);
+timestruc_t dmu_objset_snap_cmtime(objset_t *os);
+
+/* called from dsl */
+void dmu_objset_sync(objset_t *os, zio_t *zio, dmu_tx_t *tx);
+boolean_t dmu_objset_is_dirty(objset_t *os, uint64_t txg);
+boolean_t dmu_objset_is_dirty_anywhere(objset_t *os);
+objset_t *dmu_objset_create_impl(spa_t *spa, struct dsl_dataset *ds,
+ blkptr_t *bp, dmu_objset_type_t type, dmu_tx_t *tx);
+int dmu_objset_open_impl(spa_t *spa, struct dsl_dataset *ds, blkptr_t *bp,
+ objset_t **osp);
+void dmu_objset_evict(objset_t *os);
+void dmu_objset_do_userquota_updates(objset_t *os, dmu_tx_t *tx);
+void dmu_objset_userquota_get_ids(dnode_t *dn, boolean_t before, dmu_tx_t *tx);
+boolean_t dmu_objset_userused_enabled(objset_t *os);
+int dmu_objset_userspace_upgrade(objset_t *os);
+boolean_t dmu_objset_userspace_present(objset_t *os);
+
+void dmu_objset_init(void);
+void dmu_objset_fini(void);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_DMU_OBJSET_H */