tdb2: unify tdb1_open into tdb_open

Finally, we gut tdb1_open() to the tdb1-specific parts, and call it
from tdb_open if they specify the TDB_VERSION1 flag or the version is
a TDB1.

We also unify tdb_close(), based on the TDB_VERSION1 flag.

Note that tdb_open(TDB_VERSION1) will fail on an existing tdb if it's
a TDB2.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
(Imported from CCAN commit c8c3b3568677e8b0105f84e4ab068c580faf4591)

1 files changed, 7 insertions, 0 deletions

diff --git a/lib/tdb2/tdb1_io.c b/lib/tdb2/tdb1_io.c
index fe07c4ad2e..70a660cf53 100644
--- a/lib/tdb2/tdb1_io.c
+++ b/lib/tdb2/tdb1_io.c
@@ -503,3 +503,10 @@ void tdb1_io_init(struct tdb_context *tdb)
 {
 	tdb->tdb1.io = &io1_methods;
 }
+
+enum TDB_ERROR tdb1_probe_length(struct tdb_context *tdb)
+{
+	tdb->last_error = TDB_SUCCESS;
+	tdb->tdb1.io->tdb1_oob(tdb, tdb->file->map_size + 1, true);
+	return tdb->last_error;
+}