libbe(3): Disambiguate 'active' a little bit, add 'bootfs'

- Rename 'active' to 'rootfs', which is used in other places to describe the
currently booted (or about to be booted) BE.

- Add 'bootfs', which indicates the next boot environment to be booted. This
  is pulled from the BOOTFS zpool property.

- Go ahead and keep an open handle to the active zpool. We might need to
  enumerate datasets, get properties, and set properties (e.g. bootfs)
  throughout other libbe bits, and a single handle isn't overly expensive.

1 files changed, 2 insertions, 2 deletions

diff --git a/lib/libbe/be_info.c b/lib/libbe/be_info.c
index 747155916a95..93b327d6a6b2 100644
--- a/lib/libbe/be_info.c
+++ b/lib/libbe/be_info.c
@@ -43,7 +43,7 @@ static int prop_list_builder(prop_data_t *);
 const char *
 be_active_name(libbe_handle_t *lbh)
 {
-	return (strrchr(lbh->active, '/') + sizeof(char));
+	return (strrchr(lbh->rootfs, '/') + sizeof(char));
 }
 
 
@@ -53,7 +53,7 @@ be_active_name(libbe_handle_t *lbh)
 const char *
 be_active_path(libbe_handle_t *lbh)
 {
-	return (lbh->active);
+	return (lbh->rootfs);
 }