libzfs_handle_t
int zpool_iter(libzfs_handle_t* handle, zpool_iter_f iter, void* arg) {
int zpool_iter(libzfs_handle_t*, zpool_iter_f, void*);
libzfs_handle_t *zpool_hdl;
libzfs_handle_t *g_zfsHandle;
extern libzfs_handle_t *g_zfsHandle;
be_zfs_create(libzfs_handle_t *lzh, const char *buf, zfs_type_t t,
libzfs_handle_t *lzh;