Illumos #1644, #1645, #1646, #1647, #1708

1644 add ZFS "clones" property
1645 add ZFS "written" and "written@..." properties
1646 "zfs send" should estimate size of stream
1647 "zfs destroy" should determine space reclaimed by
     destroying multiple snapshots
1708 adjust size of zpool history data

References:
  https://www.illumos.org/issues/1644
  https://www.illumos.org/issues/1645
  https://www.illumos.org/issues/1646
  https://www.illumos.org/issues/1647
  https://www.illumos.org/issues/1708

This commit modifies the user to kernel space ioctl ABI.  Extra
care should be taken when updating to ensure both the kernel
modules and utilities are updated.  This change has reordered
all of the new ioctl()s to the end of the list.  This should
help minimize this issue in the future.

Reviewed by: Richard Lowe <[email protected]>
Reviewed by: George Wilson <[email protected]>
Reviewed by: Albert Lee <[email protected]>
Approved by: Garrett D'Amore <[email protected]>

Ported by: Martin Matuska <[email protected]>
Signed-off-by: Brian Behlendorf <[email protected]>
Closes #826
Closes #664

4 files changed, 19 insertions, 4 deletions

diff --git a/include/sys/dmu.h b/include/sys/dmu.h
index 3f9c711b9..5b2e25b78 100644
--- a/include/sys/dmu.h
+++ b/include/sys/dmu.h
@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011 by Delphix. All rights reserved.
  */
 
 /* Portions Copyright 2010 Robert Milkowski */
@@ -190,7 +191,7 @@ int dmu_objset_create(const char *name, dmu_objset_type_t type, uint64_t flags,
 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_snapshots_destroy(char *fsname, char *snapname, boolean_t defer);
+int dmu_snapshots_destroy_nvl(struct nvlist *snaps, boolean_t defer, char *);
 int dmu_objset_snapshot(char *fsname, char *snapname, char *tag,
     struct nvlist *props, boolean_t recursive, boolean_t temporary, int fd);
 int dmu_objset_rename(const char *name, const char *newname,
@@ -706,6 +707,8 @@ void dmu_traverse_objset(objset_t *os, uint64_t txg_start,
 
 int dmu_sendbackup(objset_t *tosnap, objset_t *fromsnap, boolean_t fromorigin,
     struct vnode *vp, offset_t *off);
+int dmu_send_estimate(objset_t *tosnap, objset_t *fromsnap, boolean_t fromorign,
+    uint64_t *sizep);
 
 typedef struct dmu_recv_cookie {
 	/*
diff --git a/include/sys/dsl_dataset.h b/include/sys/dsl_dataset.h
index 22733d070..c4530a8f0 100644
--- a/include/sys/dsl_dataset.h
+++ b/include/sys/dsl_dataset.h
@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2005, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011 by Delphix. All rights reserved.
  */
 
 #ifndef	_SYS_DSL_DATASET_H
@@ -249,6 +250,10 @@ void dsl_dataset_space(dsl_dataset_t *ds,
     uint64_t *refdbytesp, uint64_t *availbytesp,
     uint64_t *usedobjsp, uint64_t *availobjsp);
 uint64_t dsl_dataset_fsid_guid(dsl_dataset_t *ds);
+int dsl_dataset_space_written(dsl_dataset_t *oldsnap, dsl_dataset_t *new,
+    uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
+int dsl_dataset_space_wouldfree(dsl_dataset_t *firstsnap, dsl_dataset_t *last,
+    uint64_t *usedp, uint64_t *compp, uint64_t *uncompp);
 
 int dsl_dsobj_to_dsname(char *pname, uint64_t obj, char *buf);
 
diff --git a/include/sys/dsl_deleg.h b/include/sys/dsl_deleg.h
index 73c43bd23..9db6d07e8 100644
--- a/include/sys/dsl_deleg.h
+++ b/include/sys/dsl_deleg.h
@@ -20,6 +20,7 @@
  */
 /*
  * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2011 by Delphix. All rights reserved.
  */
 
 #ifndef	_SYS_DSL_DELEG_H
@@ -64,7 +65,8 @@ extern "C" {
 int dsl_deleg_get(const char *ddname, nvlist_t **nvp);
 int dsl_deleg_set(const char *ddname, nvlist_t *nvp, boolean_t unset);
 int dsl_deleg_access(const char *ddname, const char *perm, cred_t *cr);
-int dsl_deleg_access_impl(struct dsl_dataset *ds, const char *perm, cred_t *cr);
+int dsl_deleg_access_impl(struct dsl_dataset *ds, boolean_t descendent,
+    const char *perm, cred_t *cr);
 void dsl_deleg_set_create_perms(dsl_dir_t *dd, dmu_tx_t *tx, cred_t *cr);
 int dsl_deleg_can_allow(char *ddname, nvlist_t *nvp, cred_t *cr);
 int dsl_deleg_can_unallow(char *ddname, nvlist_t *nvp, cred_t *cr);
diff --git a/include/sys/fs/zfs.h b/include/sys/fs/zfs.h
index 032a952af..86d7ad515 100644
--- a/include/sys/fs/zfs.h
+++ b/include/sys/fs/zfs.h
@@ -125,6 +125,8 @@ typedef enum {
 	ZFS_PROP_MLSLABEL,
 	ZFS_PROP_SYNC,
 	ZFS_PROP_REFRATIO,
+	ZFS_PROP_WRITTEN,
+	ZFS_PROP_CLONES,
 	ZFS_NUM_PROPS
 } zfs_prop_t;
 
@@ -222,6 +224,7 @@ const char *zfs_prop_to_name(zfs_prop_t);
 zfs_prop_t zfs_name_to_prop(const char *);
 boolean_t zfs_prop_user(const char *);
 boolean_t zfs_prop_userquota(const char *);
+boolean_t zfs_prop_written(const char *);
 int zfs_prop_index_to_string(zfs_prop_t, uint64_t, const char **);
 int zfs_prop_string_to_index(zfs_prop_t, const char *, uint64_t *);
 uint64_t zfs_prop_random_value(zfs_prop_t, uint64_t seed);
@@ -764,7 +767,7 @@ typedef enum zfs_ioc {
 	ZFS_IOC_ERROR_LOG,
 	ZFS_IOC_CLEAR,
 	ZFS_IOC_PROMOTE,
-	ZFS_IOC_DESTROY_SNAPS,
+	ZFS_IOC_DESTROY_SNAPS_NVL,
 	ZFS_IOC_SNAPSHOT,
 	ZFS_IOC_DSOBJ_TO_DSNAME,
 	ZFS_IOC_OBJ_TO_PATH,
@@ -787,9 +790,11 @@ typedef enum zfs_ioc {
 	ZFS_IOC_DIFF,
 	ZFS_IOC_TMP_SNAPSHOT,
 	ZFS_IOC_OBJ_TO_STATS,
-	ZFS_IOC_POOL_REGUID,
 	ZFS_IOC_EVENTS_NEXT,
 	ZFS_IOC_EVENTS_CLEAR,
+	ZFS_IOC_POOL_REGUID,
+	ZFS_IOC_SPACE_WRITTEN,
+	ZFS_IOC_SPACE_SNAPS,
 } zfs_ioc_t;
 
 /*