+#ifndef CNID_DB_CDB
+ /* Do a little checkpointing if necessary. I stuck it here as cnid_lookup
+ * gets called when we do directory lookups. Only do this if we're using
+ * a read-write database. */
+ if ((db->flags & CNIDFLAG_DB_RO) == 0) {
+#ifdef DEBUG
+ LOG(log_info, logtype_default, "cnid_lookup: Running database checkpoint");
+#endif
+#if DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 1)
+ db->dbenv->txn_checkpoint(db->dbenv, LOGFILEMAX, CHECKTIMEMAX, 0)
+#else
+#if DB_VERSION_MAJOR >= 4
+ switch (rc = db->dbenv->txn_checkpoint(db->dbenv, LOGFILEMAX, CHECKTIMEMAX, 0)) {
+#else
+ switch (rc = txn_checkpoint(db->dbenv, LOGFILEMAX, CHECKTIMEMAX, 0)) {
+#endif /* DB_VERSION_MAJOR >= 4 */
+ case 0:
+ case DB_INCOMPLETE:
+ break;
+ default:
+ LOG(log_error, logtype_default, "cnid_lookup: txn_checkpoint: %s",
+ db_strerror(rc));
+ return 0;
+ }
+ }
+#endif /* DB_VERSION_MAJOR > 4 || (DB_VERSION_MAJOR == 4 && DB_VERSION_MINOR >= 1) */
+#endif /* CNID_DB_CDB */
+
+ if ((buf = make_cnid_data(st, did, name, len)) == NULL) {
+ LOG(log_error, logtype_default, "cnid_lookup: Pathname is too long");
+ return 0;
+ }
+
+ memset(&key, 0, sizeof(key));
+ memset(&devdata, 0, sizeof(devdata));
+ memset(&diddata, 0, sizeof(diddata));
+
+ /* Look for a CNID. We have two options: dev/ino or did/name. If we
+ * only get a match in one of them, that means a file has moved. */
+ key.data = buf;
+ key.size = CNID_DEVINO_LEN;
+ while ((rc = db->db_devino->get(db->db_devino, NULL, &key, &devdata, 0))) {
+#ifndef CNID_DB_CDB
+ if (rc == DB_LOCK_DEADLOCK) {
+ continue;
+ }
+#endif /* CNID_DB_CDB */
+
+ if (rc == DB_NOTFOUND) {
+ devino = 0;
+ break;
+ }
+
+ LOG(log_error, logtype_default, "cnid_lookup: Unable to get CNID dev %u, ino %u: %s",
+ st->st_dev, st->st_ino, db_strerror(rc));
+ return 0;
+ }
+
+ /* did/name now */
+ key.data = buf + CNID_DEVINO_LEN;
+ key.size = CNID_DID_LEN + len + 1;
+ while ((rc = db->db_didname->get(db->db_didname, NULL, &key, &diddata, 0))) {
+#ifndef CNID_DB_CDB
+ if (rc == DB_LOCK_DEADLOCK) {
+ continue;
+ }
+#endif /* CNID_DB_CDB */
+
+ if (rc == DB_NOTFOUND) {
+ didname = 0;
+ break;
+ }
+
+ LOG(log_error, logtype_default, "cnid_lookup: Unable to get CNID %u, name %s: %s",
+ ntohl(did), name, db_strerror(rc));
+ return 0;
+ }
+
+ /* Set id. Honor did/name over dev/ino as dev/ino isn't necessarily
+ * 1-1. */
+ if (didname) {
+ memcpy(&id, diddata.data, sizeof(id));
+ }
+ else if (devino) {
+ memcpy(&id, devdata.data, sizeof(id));
+ }
+
+ /* Either entries are in both databases or neither of them. */
+ if ((devino && didname) || !(devino || didname)) {
+#ifdef DEBUG
+ LOG(log_info, logtype_default, "cnid_lookup: Looked up did %u, name %s, as %u",
+ ntohl(did), name, ntohl(id));
+#endif
+ return id;
+ }
+
+ /* Fix up the database. */
+ cnid_update(db, id, st, did, name, len);
+#ifdef DEBUG
+ LOG(log_info, logtype_default, "cnid_lookup: Looked up did %u, name %s, as %u (needed update)", ntohl(did), name, ntohl(id));
+#endif
+ return id;