Symbol: spa_get_bootprop_uint64
usr/src/uts/common/fs/zfs/zfs_vfsops.c
1841
zfs_bootpool = spa_get_bootprop_uint64("zfs-bootpool", 0);
usr/src/uts/common/fs/zfs/zfs_vfsops.c
1842
zfs_bootvdev = spa_get_bootprop_uint64("zfs-bootvdev", 0);