2619 asynchronous destruction of ZFS file systems
2747 SPA versioning with zfs feature flags
Reviewed by: Matt Ahrens <mahrens@delphix.com>
Reviewed by: George Wilson <gwilson@delphix.com>
Reviewed by: Richard Lowe <richlowe@richlowe.net>
Reviewed by: Dan Kruchinin <dan.kruchinin@gmail.com>
Approved by: Dan McDonald <danmcd@nexenta.com>

*** 77,86 ****
--- 77,88 ----
          /* readonly number properties */
          zprop_register_number(ZPOOL_PROP_SIZE, "size", 0, PROP_READONLY,
              ZFS_TYPE_POOL, "<size>", "SIZE");
          zprop_register_number(ZPOOL_PROP_FREE, "free", 0, PROP_READONLY,
              ZFS_TYPE_POOL, "<size>", "FREE");
+         zprop_register_number(ZPOOL_PROP_FREEING, "freeing", 0, PROP_READONLY,
+             ZFS_TYPE_POOL, "<size>", "FREEING");
          zprop_register_number(ZPOOL_PROP_ALLOCATED, "allocated", 0,
              PROP_READONLY, ZFS_TYPE_POOL, "<size>", "ALLOC");
          zprop_register_number(ZPOOL_PROP_EXPANDSZ, "expandsize", 0,
              PROP_READONLY, ZFS_TYPE_POOL, "<size>", "EXPANDSZ");
          zprop_register_number(ZPOOL_PROP_CAPACITY, "capacity", 0, PROP_READONLY,
*** 164,173 ****
--- 166,195 ----
  zpool_prop_default_numeric(zpool_prop_t prop)
  {
          return (zpool_prop_table[prop].pd_numdefault);
  }
  
+ /*
+  * Returns true if this is a valid feature@ property.
+  */
+ boolean_t
+ zpool_prop_feature(const char *name)
+ {
+         static const char *prefix = "feature@";
+         return (strncmp(name, prefix, strlen(prefix)) == 0);
+ }
+ 
+ /*
+  * Returns true if this is a valid unsupported@ property.
+  */
+ boolean_t
+ zpool_prop_unsupported(const char *name)
+ {
+         static const char *prefix = "unsupported@";
+         return (strncmp(name, prefix, strlen(prefix)) == 0);
+ }
+ 
  int
  zpool_prop_string_to_index(zpool_prop_t prop, const char *string,
      uint64_t *index)
  {
          return (zprop_string_to_index(prop, string, index, ZFS_TYPE_POOL));