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diff --git a/minzip/DirUtil.h b/minzip/DirUtil.h
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--- /dev/null
+++ b/minzip/DirUtil.h
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+/*
+ * Copyright (C) 2007 The Android Open Source Project
+ *
+ * Licensed 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 MINZIP_DIRUTIL_H_
+#define MINZIP_DIRUTIL_H_
+
+#include <stdbool.h>
+#include <utime.h>
+
+/* Like "mkdir -p", try to guarantee that all directories
+ * specified in path are present, creating as many directories
+ * as necessary.  The specified mode is passed to all mkdir
+ * calls;  no modifications are made to umask.
+ *
+ * If stripFileName is set, everything after the final '/'
+ * is stripped before creating the directory hierarchy.
+ *
+ * If timestamp is non-NULL, new directories will be timestamped accordingly.
+ *
+ * Returns 0 on success; returns -1 (and sets errno) on failure
+ * (usually if some element of path is not a directory).
+ */
+int dirCreateHierarchy(const char *path, int mode,
+        const struct utimbuf *timestamp, bool stripFileName);
+
+/* rm -rf <path>
+ */
+int dirUnlinkHierarchy(const char *path);
+
+/* chown -R <uid>:<gid> <path>
+ * chmod -R <mode> <path>
+ *
+ * Sets directories to <dirMode> and files to <fileMode>.  Skips symlinks.
+ */
+int dirSetHierarchyPermissions(const char *path,
+         int uid, int gid, int dirMode, int fileMode);
+
+#endif  // MINZIP_DIRUTIL_H_