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diff --git a/subversion/libsvn_fs_base/bdb/locks-table.h b/subversion/libsvn_fs_base/bdb/locks-table.h
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+++ b/subversion/libsvn_fs_base/bdb/locks-table.h
@@ -0,0 +1,110 @@
+/* locks-table.h : internal interface to ops on `locks' table
+ *
+ * ====================================================================
+ *    Licensed to the Apache Software Foundation (ASF) under one
+ *    or more contributor license agreements.  See the NOTICE file
+ *    distributed with this work for additional information
+ *    regarding copyright ownership.  The ASF licenses this file
+ *    to you under the Apache License, Version 2.0 (the
+ *    "License"); you may not use this file except in compliance
+ *    with the License.  You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *    Unless required by applicable law or agreed to in writing,
+ *    software distributed under the License is distributed on an
+ *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ *    KIND, either express or implied.  See the License for the
+ *    specific language governing permissions and limitations
+ *    under the License.
+ * ====================================================================
+ */
+
+#ifndef SVN_LIBSVN_FS_LOCKS_TABLE_H
+#define SVN_LIBSVN_FS_LOCKS_TABLE_H
+
+#include "svn_fs.h"
+#include "svn_error.h"
+#include "../trail.h"
+#include "../fs.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif /* __cplusplus */
+
+
+/* Open a `locks' table in ENV.  If CREATE is non-zero, create
+   one if it doesn't exist.  Set *LOCKS_P to the new table.
+   Return a Berkeley DB error code.  */
+int svn_fs_bdb__open_locks_table(DB **locks_p,
+                                 DB_ENV *env,
+                                 svn_boolean_t create);
+
+
+/* Add a lock to the `locks' table in FS, as part of TRAIL.
+
+   Use LOCK_TOKEN as the key, presumably a string form of an apr_uuid_t.
+   Convert LOCK into a skel and store it as the value.
+
+   Warning:  if LOCK_TOKEN already exists as a key, then its value
+   will be overwritten. */
+svn_error_t *svn_fs_bdb__lock_add(svn_fs_t *fs,
+                                  const char *lock_token,
+                                  svn_lock_t *lock,
+                                  trail_t *trail,
+                                  apr_pool_t *pool);
+
+
+/* Remove the lock whose key is LOCK_TOKEN from the `locks' table of
+   FS, as part of TRAIL.
+
+   Return SVN_ERR_FS_BAD_LOCK_TOKEN if LOCK_TOKEN does not exist as a
+   table key. */
+svn_error_t *svn_fs_bdb__lock_delete(svn_fs_t *fs,
+                                     const char *lock_token,
+                                     trail_t *trail,
+                                     apr_pool_t *pool);
+
+
+/* Retrieve the lock *LOCK_P pointed to by LOCK_TOKEN from the `locks'
+   table of FS, as part of TRAIL.  Perform all allocations in POOL.
+
+   Return SVN_ERR_FS_BAD_LOCK_TOKEN if LOCK_TOKEN does not exist as a
+   table key.
+
+   Before returning LOCK_P, check its expiration date.  If expired,
+   remove the row from the `locks' table and return SVN_ERR_FS_LOCK_EXPIRED.
+ */
+svn_error_t *svn_fs_bdb__lock_get(svn_lock_t **lock_p,
+                                  svn_fs_t *fs,
+                                  const char *lock_token,
+                                  trail_t *trail,
+                                  apr_pool_t *pool);
+
+
+/* Retrieve locks representing all locks that exist at or below PATH
+   in FS. Pass each lock to GET_LOCKS_FUNC callback along with
+   GET_LOCKS_BATON.
+
+   Use DEPTH to filter the reported locks to only those within the
+   requested depth of PATH.
+
+   This function promises to auto-expire any locks encountered while
+   building the hash.  That means that the caller can trust that each
+   returned lock hasn't yet expired.
+*/
+svn_error_t *svn_fs_bdb__locks_get(svn_fs_t *fs,
+                                   const char *path,
+                                   svn_depth_t depth,
+                                   svn_fs_get_locks_callback_t get_locks_func,
+                                   void *get_locks_baton,
+                                   trail_t *trail,
+                                   apr_pool_t *pool);
+
+
+
+#ifdef __cplusplus
+}
+#endif /* __cplusplus */
+
+#endif /* SVN_LIBSVN_FS_LOCKS_TABLE_H */