--- /dev/null
+/*
+ * 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_DSL_DIR_H
+#define _SYS_DSL_DIR_H
+
+#include <sys/dmu.h>
+#include <sys/dsl_pool.h>
+#include <sys/dsl_synctask.h>
+#include <sys/refcount.h>
+#include <sys/zfs_context.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+struct dsl_dataset;
+
+typedef enum dd_used {
+ DD_USED_HEAD,
+ DD_USED_SNAP,
+ DD_USED_CHILD,
+ DD_USED_CHILD_RSRV,
+ DD_USED_REFRSRV,
+ DD_USED_NUM
+} dd_used_t;
+
+#define DD_FLAG_USED_BREAKDOWN (1<<0)
+
+typedef struct dsl_dir_phys {
+ uint64_t dd_creation_time; /* not actually used */
+ uint64_t dd_head_dataset_obj;
+ uint64_t dd_parent_obj;
+ uint64_t dd_origin_obj;
+ uint64_t dd_child_dir_zapobj;
+ /*
+ * how much space our children are accounting for; for leaf
+ * datasets, == physical space used by fs + snaps
+ */
+ uint64_t dd_used_bytes;
+ uint64_t dd_compressed_bytes;
+ uint64_t dd_uncompressed_bytes;
+ /* Administrative quota setting */
+ uint64_t dd_quota;
+ /* Administrative reservation setting */
+ uint64_t dd_reserved;
+ uint64_t dd_props_zapobj;
+ uint64_t dd_deleg_zapobj; /* dataset delegation permissions */
+ uint64_t dd_flags;
+ uint64_t dd_used_breakdown[DD_USED_NUM];
+ uint64_t dd_clones; /* dsl_dir objects */
+ uint64_t dd_pad[13]; /* pad out to 256 bytes for good measure */
+} dsl_dir_phys_t;
+
+struct dsl_dir {
+ /* These are immutable; no lock needed: */
+ uint64_t dd_object;
+ dsl_dir_phys_t *dd_phys;
+ dmu_buf_t *dd_dbuf;
+ dsl_pool_t *dd_pool;
+
+ /* protected by lock on pool's dp_dirty_dirs list */
+ txg_node_t dd_dirty_link;
+
+ /* protected by dp_config_rwlock */
+ dsl_dir_t *dd_parent;
+
+ /* Protected by dd_lock */
+ kmutex_t dd_lock;
+ list_t dd_prop_cbs; /* list of dsl_prop_cb_record_t's */
+ timestruc_t dd_snap_cmtime; /* last time snapshot namespace changed */
+ uint64_t dd_origin_txg;
+
+ /* gross estimate of space used by in-flight tx's */
+ uint64_t dd_tempreserved[TXG_SIZE];
+ /* amount of space we expect to write; == amount of dirty data */
+ int64_t dd_space_towrite[TXG_SIZE];
+
+ /* protected by dd_lock; keep at end of struct for better locality */
+ char dd_myname[MAXNAMELEN];
+};
+
+void dsl_dir_close(dsl_dir_t *dd, void *tag);
+int dsl_dir_open(const char *name, void *tag, dsl_dir_t **, const char **tail);
+int dsl_dir_open_spa(spa_t *spa, const char *name, void *tag, dsl_dir_t **,
+ const char **tailp);
+int dsl_dir_open_obj(dsl_pool_t *dp, uint64_t ddobj,
+ const char *tail, void *tag, dsl_dir_t **);
+void dsl_dir_name(dsl_dir_t *dd, char *buf);
+int dsl_dir_namelen(dsl_dir_t *dd);
+uint64_t dsl_dir_create_sync(dsl_pool_t *dp, dsl_dir_t *pds,
+ const char *name, dmu_tx_t *tx);
+dsl_checkfunc_t dsl_dir_destroy_check;
+dsl_syncfunc_t dsl_dir_destroy_sync;
+void dsl_dir_stats(dsl_dir_t *dd, nvlist_t *nv);
+uint64_t dsl_dir_space_available(dsl_dir_t *dd,
+ dsl_dir_t *ancestor, int64_t delta, int ondiskonly);
+void dsl_dir_dirty(dsl_dir_t *dd, dmu_tx_t *tx);
+void dsl_dir_sync(dsl_dir_t *dd, dmu_tx_t *tx);
+int dsl_dir_tempreserve_space(dsl_dir_t *dd, uint64_t mem,
+ uint64_t asize, uint64_t fsize, uint64_t usize, void **tr_cookiep,
+ dmu_tx_t *tx);
+void dsl_dir_tempreserve_clear(void *tr_cookie, dmu_tx_t *tx);
+void dsl_dir_willuse_space(dsl_dir_t *dd, int64_t space, dmu_tx_t *tx);
+void dsl_dir_diduse_space(dsl_dir_t *dd, dd_used_t type,
+ int64_t used, int64_t compressed, int64_t uncompressed, dmu_tx_t *tx);
+void dsl_dir_transfer_space(dsl_dir_t *dd, int64_t delta,
+ dd_used_t oldtype, dd_used_t newtype, dmu_tx_t *tx);
+int dsl_dir_set_quota(const char *ddname, zprop_source_t source,
+ uint64_t quota);
+int dsl_dir_set_reservation(const char *ddname, zprop_source_t source,
+ uint64_t reservation);
+int dsl_dir_rename(dsl_dir_t *dd, const char *newname);
+int dsl_dir_transfer_possible(dsl_dir_t *sdd, dsl_dir_t *tdd, uint64_t space);
+int dsl_dir_set_reservation_check(void *arg1, void *arg2, dmu_tx_t *tx);
+boolean_t dsl_dir_is_clone(dsl_dir_t *dd);
+void dsl_dir_new_refreservation(dsl_dir_t *dd, struct dsl_dataset *ds,
+ uint64_t reservation, cred_t *cr, dmu_tx_t *tx);
+void dsl_dir_snap_cmtime_update(dsl_dir_t *dd);
+timestruc_t dsl_dir_snap_cmtime(dsl_dir_t *dd);
+
+/* internal reserved dir name */
+#define MOS_DIR_NAME "$MOS"
+#define ORIGIN_DIR_NAME "$ORIGIN"
+#define XLATION_DIR_NAME "$XLATION"
+#define FREE_DIR_NAME "$FREE"
+
+#ifdef ZFS_DEBUG
+#define dprintf_dd(dd, fmt, ...) do { \
+ if (zfs_flags & ZFS_DEBUG_DPRINTF) { \
+ char *__ds_name = kmem_alloc(MAXNAMELEN + strlen(MOS_DIR_NAME) + 1, \
+ KM_SLEEP); \
+ dsl_dir_name(dd, __ds_name); \
+ dprintf("dd=%s " fmt, __ds_name, __VA_ARGS__); \
+ kmem_free(__ds_name, MAXNAMELEN + strlen(MOS_DIR_NAME) + 1); \
+ } \
+_NOTE(CONSTCOND) } while (0)
+#else
+#define dprintf_dd(dd, fmt, ...)
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _SYS_DSL_DIR_H */
git://git.camperquake.de / zfs.git / blobdiff