tdb2: transaction support

[ccan] / ccan / tdb2 / tdb.c

diff --git a/ccan/tdb2/tdb.c b/ccan/tdb2/tdb.c
index cffb4130677a0cadcfe0f154e39207ab66ce1565..d070a0ef3068210d1d828731a1361716557f476e 100644 (file)
--- a/ccan/tdb2/tdb.c
+++ b/ccan/tdb2/tdb.c
@@ -103,6 +103,7 @@ static int tdb_new_database(struct tdb_context *tdb,
                                         sizeof(newdb.hdr.hash_test),
                                         newdb.hdr.hash_seed,
                                         tdb->hash_priv);
+       newdb.hdr.recovery = 0;
        memset(newdb.hdr.reserved, 0, sizeof(newdb.hdr.reserved));
        /* Initial hashes are empty. */
        memset(newdb.hdr.hashtable, 0, sizeof(newdb.hdr.hashtable));
@@ -246,7 +247,7 @@ struct tdb_context *tdb_open(const char *name, int tdb_flags,
         fcntl(tdb->fd, F_SETFD, v | FD_CLOEXEC);
 
        /* ensure there is only one process initialising at once */
-       if (tdb_lock_open(tdb) == -1) {
+       if (tdb_lock_open(tdb, TDB_LOCK_WAIT|TDB_LOCK_NOCHECK) == -1) {
                tdb->log(tdb, TDB_DEBUG_ERROR, tdb->log_priv,
                         "tdb_open: failed to get open lock on %s: %s\n",
                         name, strerror(errno));
@@ -314,6 +315,12 @@ struct tdb_context *tdb_open(const char *name, int tdb_flags,
        /* This make sure we have current map_size and mmap. */
        tdb->methods->oob(tdb, tdb->map_size + 1, true);
 
+       /* Now it's fully formed, recover if necessary. */
+       if (tdb_needs_recovery(tdb) && tdb_lock_and_recover(tdb) == -1) {
+               errno = EIO;
+               goto fail;
+       }
+
        if (tdb_flist_init(tdb) == -1)
                goto fail;