diff --git a/otautil/Android.bp b/otautil/Android.bp
index 0b23143..a2eaa04 100644
--- a/otautil/Android.bp
+++ b/otautil/Android.bp
@@ -18,7 +18,6 @@
     srcs: [
         "SysUtil.cpp",
         "DirUtil.cpp",
-        "ZipUtil.cpp",
         "ThermalUtil.cpp",
     ],
 
diff --git a/otautil/ZipUtil.cpp b/otautil/ZipUtil.cpp
deleted file mode 100644
index 9cc97e4..0000000
--- a/otautil/ZipUtil.cpp
+++ /dev/null
@@ -1,120 +0,0 @@
-/*
- * Copyright (C) 2016 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.
- */
-
-#include "ZipUtil.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <utime.h>
-
-#include <string>
-
-#include <android-base/logging.h>
-#include <android-base/unique_fd.h>
-#include <selinux/label.h>
-#include <selinux/selinux.h>
-#include <ziparchive/zip_archive.h>
-
-#include "DirUtil.h"
-
-static constexpr mode_t UNZIP_DIRMODE = 0755;
-static constexpr mode_t UNZIP_FILEMODE = 0644;
-
-bool ExtractPackageRecursive(ZipArchiveHandle zip, const std::string& zip_path,
-                             const std::string& dest_path, const struct utimbuf* timestamp,
-                             struct selabel_handle* sehnd) {
-    if (!zip_path.empty() && zip_path[0] == '/') {
-        LOG(ERROR) << "ExtractPackageRecursive(): zip_path must be a relative path " << zip_path;
-        return false;
-    }
-    if (dest_path.empty() || dest_path[0] != '/') {
-        LOG(ERROR) << "ExtractPackageRecursive(): dest_path must be an absolute path " << dest_path;
-        return false;
-    }
-
-    void* cookie;
-    std::string target_dir(dest_path);
-    if (dest_path.back() != '/') {
-        target_dir += '/';
-    }
-    std::string prefix_path(zip_path);
-    if (!zip_path.empty() && zip_path.back() != '/') {
-        prefix_path += '/';
-    }
-    const ZipString zip_prefix(prefix_path.c_str());
-
-    int ret = StartIteration(zip, &cookie, &zip_prefix, nullptr);
-    if (ret != 0) {
-        LOG(ERROR) << "failed to start iterating zip entries.";
-        return false;
-    }
-
-    std::unique_ptr<void, decltype(&EndIteration)> guard(cookie, EndIteration);
-    ZipEntry entry;
-    ZipString name;
-    int extractCount = 0;
-    while (Next(cookie, &entry, &name) == 0) {
-        std::string entry_name(name.name, name.name + name.name_length);
-        CHECK_LE(prefix_path.size(), entry_name.size());
-        std::string path = target_dir + entry_name.substr(prefix_path.size());
-        // Skip dir.
-        if (path.back() == '/') {
-            continue;
-        }
-
-        if (dirCreateHierarchy(path.c_str(), UNZIP_DIRMODE, timestamp, true, sehnd) != 0) {
-            LOG(ERROR) << "failed to create dir for " << path;
-            return false;
-        }
-
-        char *secontext = NULL;
-        if (sehnd) {
-            selabel_lookup(sehnd, &secontext, path.c_str(), UNZIP_FILEMODE);
-            setfscreatecon(secontext);
-        }
-        android::base::unique_fd fd(open(path.c_str(), O_CREAT|O_WRONLY|O_TRUNC, UNZIP_FILEMODE));
-        if (fd == -1) {
-            PLOG(ERROR) << "Can't create target file \"" << path << "\"";
-            return false;
-        }
-        if (secontext) {
-            freecon(secontext);
-            setfscreatecon(NULL);
-        }
-
-        int err = ExtractEntryToFile(zip, &entry, fd);
-        if (err != 0) {
-            LOG(ERROR) << "Error extracting \"" << path << "\" : " << ErrorCodeString(err);
-            return false;
-        }
-
-        if (fsync(fd) != 0) {
-            PLOG(ERROR) << "Error syncing file descriptor when extracting \"" << path << "\"";
-            return false;
-        }
-
-        if (timestamp != nullptr && utime(path.c_str(), timestamp)) {
-            PLOG(ERROR) << "Error touching \"" << path << "\"";
-            return false;
-        }
-
-        LOG(INFO) << "Extracted file \"" << path << "\"";
-        ++extractCount;
-    }
-
-    LOG(INFO) << "Extracted " << extractCount << " file(s)";
-    return true;
-}
diff --git a/otautil/ZipUtil.h b/otautil/ZipUtil.h
deleted file mode 100644
index cda405c..0000000
--- a/otautil/ZipUtil.h
+++ /dev/null
@@ -1,57 +0,0 @@
-/*
- * Copyright (C) 2016 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 _OTAUTIL_ZIPUTIL_H
-#define _OTAUTIL_ZIPUTIL_H
-
-#include <utime.h>
-
-#include <string>
-
-#include <selinux/label.h>
-#include <ziparchive/zip_archive.h>
-
-/*
- * Inflate all files under zip_path to the directory specified by
- * dest_path, which must exist and be a writable directory. The zip_path
- * is allowed to be an empty string, in which case the whole package
- * will be extracted.
- *
- * Directory entries are not extracted.
- *
- * The immediate children of zip_path will become the immediate
- * children of dest_path; e.g., if the archive contains the entries
- *
- *     a/b/c/one
- *     a/b/c/two
- *     a/b/c/d/three
- *
- * and ExtractPackageRecursive(a, "a/b/c", "/tmp", ...) is called, the resulting
- * files will be
- *
- *     /tmp/one
- *     /tmp/two
- *     /tmp/d/three
- *
- * If timestamp is non-NULL, file timestamps will be set accordingly.
- *
- * Returns true on success, false on failure.
- */
-bool ExtractPackageRecursive(ZipArchiveHandle zip, const std::string& zip_path,
-                             const std::string& dest_path, const struct utimbuf* timestamp,
-                             struct selabel_handle* sehnd);
-
-#endif // _OTAUTIL_ZIPUTIL_H
diff --git a/tests/Android.mk b/tests/Android.mk
index 02a2401..262f4ff 100644
--- a/tests/Android.mk
+++ b/tests/Android.mk
@@ -39,7 +39,6 @@
     unit/rangeset_test.cpp \
     unit/sysutil_test.cpp \
     unit/zip_test.cpp \
-    unit/ziputil_test.cpp
 
 LOCAL_C_INCLUDES := bootable/recovery
 LOCAL_SHARED_LIBRARIES := liblog
diff --git a/tests/unit/zip_test.cpp b/tests/unit/zip_test.cpp
index df4e38c..8276685 100644
--- a/tests/unit/zip_test.cpp
+++ b/tests/unit/zip_test.cpp
@@ -24,47 +24,10 @@
 #include <android-base/test_utils.h>
 #include <gtest/gtest.h>
 #include <otautil/SysUtil.h>
-#include <otautil/ZipUtil.h>
 #include <ziparchive/zip_archive.h>
 
 #include "common/test_constants.h"
 
-TEST(ZipTest, ExtractPackageRecursive) {
-  std::string zip_path = from_testdata_base("ziptest_valid.zip");
-  ZipArchiveHandle handle;
-  ASSERT_EQ(0, OpenArchive(zip_path.c_str(), &handle));
-
-  // Extract the whole package into a temp directory.
-  TemporaryDir td;
-  ASSERT_NE(nullptr, td.path);
-  ExtractPackageRecursive(handle, "", td.path, nullptr, nullptr);
-
-  // Make sure all the files are extracted correctly.
-  std::string path(td.path);
-  ASSERT_EQ(0, access((path + "/a.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/b.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/b/c.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/b/d.txt").c_str(), F_OK));
-
-  // The content of the file is the same as expected.
-  std::string content1;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/a.txt", &content1));
-  ASSERT_EQ(kATxtContents, content1);
-
-  std::string content2;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/b/d.txt", &content2));
-  ASSERT_EQ(kDTxtContents, content2);
-
-  CloseArchive(handle);
-
-  // Clean up.
-  ASSERT_EQ(0, unlink((path + "/a.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/b.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/b/c.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/b/d.txt").c_str()));
-  ASSERT_EQ(0, rmdir((path + "/b").c_str()));
-}
-
 TEST(ZipTest, OpenFromMemory) {
   std::string zip_path = from_testdata_base("ziptest_dummy-update.zip");
   MemMapping map;
diff --git a/tests/unit/ziputil_test.cpp b/tests/unit/ziputil_test.cpp
deleted file mode 100644
index 14e5416..0000000
--- a/tests/unit/ziputil_test.cpp
+++ /dev/null
@@ -1,191 +0,0 @@
-/*
- * Copyright 2016 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.
- */
-
-#include <errno.h>
-#include <sys/stat.h>
-#include <unistd.h>
-
-#include <string>
-
-#include <android-base/file.h>
-#include <android-base/test_utils.h>
-#include <gtest/gtest.h>
-#include <otautil/ZipUtil.h>
-#include <ziparchive/zip_archive.h>
-
-#include "common/test_constants.h"
-
-TEST(ZipUtilTest, invalid_args) {
-  std::string zip_path = from_testdata_base("ziptest_valid.zip");
-  ZipArchiveHandle handle;
-  ASSERT_EQ(0, OpenArchive(zip_path.c_str(), &handle));
-
-  // zip_path must be a relative path.
-  ASSERT_FALSE(ExtractPackageRecursive(handle, "/a/b", "/tmp", nullptr, nullptr));
-
-  // dest_path must be an absolute path.
-  ASSERT_FALSE(ExtractPackageRecursive(handle, "a/b", "tmp", nullptr, nullptr));
-  ASSERT_FALSE(ExtractPackageRecursive(handle, "a/b", "", nullptr, nullptr));
-
-  CloseArchive(handle);
-}
-
-TEST(ZipUtilTest, extract_all) {
-  std::string zip_path = from_testdata_base("ziptest_valid.zip");
-  ZipArchiveHandle handle;
-  ASSERT_EQ(0, OpenArchive(zip_path.c_str(), &handle));
-
-  // Extract the whole package into a temp directory.
-  TemporaryDir td;
-  ExtractPackageRecursive(handle, "", td.path, nullptr, nullptr);
-
-  // Make sure all the files are extracted correctly.
-  std::string path(td.path);
-  ASSERT_EQ(0, access((path + "/a.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/b.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/b/c.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/b/d.txt").c_str(), F_OK));
-
-  // The content of the file is the same as expected.
-  std::string content1;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/a.txt", &content1));
-  ASSERT_EQ(kATxtContents, content1);
-
-  std::string content2;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/b/d.txt", &content2));
-  ASSERT_EQ(kDTxtContents, content2);
-
-  // Clean up the temp files under td.
-  ASSERT_EQ(0, unlink((path + "/a.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/b.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/b/c.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/b/d.txt").c_str()));
-  ASSERT_EQ(0, rmdir((path + "/b").c_str()));
-
-  CloseArchive(handle);
-}
-
-TEST(ZipUtilTest, extract_prefix_with_slash) {
-  std::string zip_path = from_testdata_base("ziptest_valid.zip");
-  ZipArchiveHandle handle;
-  ASSERT_EQ(0, OpenArchive(zip_path.c_str(), &handle));
-
-  // Extract all the entries starting with "b/".
-  TemporaryDir td;
-  ExtractPackageRecursive(handle, "b/", td.path, nullptr, nullptr);
-
-  // Make sure all the files with "b/" prefix are extracted correctly.
-  std::string path(td.path);
-  ASSERT_EQ(0, access((path + "/c.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/d.txt").c_str(), F_OK));
-
-  // And the rest are not extracted.
-  ASSERT_EQ(-1, access((path + "/a.txt").c_str(), F_OK));
-  ASSERT_EQ(ENOENT, errno);
-  ASSERT_EQ(-1, access((path + "/b.txt").c_str(), F_OK));
-  ASSERT_EQ(ENOENT, errno);
-
-  // The content of the file is the same as expected.
-  std::string content1;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/c.txt", &content1));
-  ASSERT_EQ(kCTxtContents, content1);
-
-  std::string content2;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/d.txt", &content2));
-  ASSERT_EQ(kDTxtContents, content2);
-
-  // Clean up the temp files under td.
-  ASSERT_EQ(0, unlink((path + "/c.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/d.txt").c_str()));
-
-  CloseArchive(handle);
-}
-
-TEST(ZipUtilTest, extract_prefix_without_slash) {
-  std::string zip_path = from_testdata_base("ziptest_valid.zip");
-  ZipArchiveHandle handle;
-  ASSERT_EQ(0, OpenArchive(zip_path.c_str(), &handle));
-
-  // Extract all the file entries starting with "b/".
-  TemporaryDir td;
-  ExtractPackageRecursive(handle, "b", td.path, nullptr, nullptr);
-
-  // Make sure all the files with "b/" prefix are extracted correctly.
-  std::string path(td.path);
-  ASSERT_EQ(0, access((path + "/c.txt").c_str(), F_OK));
-  ASSERT_EQ(0, access((path + "/d.txt").c_str(), F_OK));
-
-  // And the rest are not extracted.
-  ASSERT_EQ(-1, access((path + "/a.txt").c_str(), F_OK));
-  ASSERT_EQ(ENOENT, errno);
-  ASSERT_EQ(-1, access((path + "/b.txt").c_str(), F_OK));
-  ASSERT_EQ(ENOENT, errno);
-
-  // The content of the file is the same as expected.
-  std::string content1;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/c.txt", &content1));
-  ASSERT_EQ(kCTxtContents, content1);
-
-  std::string content2;
-  ASSERT_TRUE(android::base::ReadFileToString(path + "/d.txt", &content2));
-  ASSERT_EQ(kDTxtContents, content2);
-
-  // Clean up the temp files under td.
-  ASSERT_EQ(0, unlink((path + "/c.txt").c_str()));
-  ASSERT_EQ(0, unlink((path + "/d.txt").c_str()));
-
-  CloseArchive(handle);
-}
-
-TEST(ZipUtilTest, set_timestamp) {
-  std::string zip_path = from_testdata_base("ziptest_valid.zip");
-  ZipArchiveHandle handle;
-  ASSERT_EQ(0, OpenArchive(zip_path.c_str(), &handle));
-
-  // Set the timestamp to 8/1/2008.
-  constexpr struct utimbuf timestamp = { 1217592000, 1217592000 };
-
-  // Extract all the entries starting with "b/".
-  TemporaryDir td;
-  ExtractPackageRecursive(handle, "b", td.path, &timestamp, nullptr);
-
-  // Make sure all the files with "b/" prefix are extracted correctly.
-  std::string path(td.path);
-  std::string file_c = path + "/c.txt";
-  std::string file_d = path + "/d.txt";
-  ASSERT_EQ(0, access(file_c.c_str(), F_OK));
-  ASSERT_EQ(0, access(file_d.c_str(), F_OK));
-
-  // Verify the timestamp.
-  timespec time;
-  time.tv_sec = 1217592000;
-  time.tv_nsec = 0;
-
-  struct stat sb;
-  ASSERT_EQ(0, stat(file_c.c_str(), &sb)) << strerror(errno);
-  ASSERT_EQ(time.tv_sec, static_cast<long>(sb.st_atime));
-  ASSERT_EQ(time.tv_sec, static_cast<long>(sb.st_mtime));
-
-  ASSERT_EQ(0, stat(file_d.c_str(), &sb)) << strerror(errno);
-  ASSERT_EQ(time.tv_sec, static_cast<long>(sb.st_atime));
-  ASSERT_EQ(time.tv_sec, static_cast<long>(sb.st_mtime));
-
-  // Clean up the temp files under td.
-  ASSERT_EQ(0, unlink(file_c.c_str()));
-  ASSERT_EQ(0, unlink(file_d.c_str()));
-
-  CloseArchive(handle);
-}
diff --git a/updater/install.cpp b/updater/install.cpp
index c5f9a89..ff79edc 100644
--- a/updater/install.cpp
+++ b/updater/install.cpp
@@ -61,7 +61,6 @@
 #include "mounts.h"
 #include "ota_io.h"
 #include "otautil/DirUtil.h"
-#include "otautil/ZipUtil.h"
 #include "print_sha1.h"
 #include "tune2fs.h"
 #include "updater/updater.h"
@@ -389,36 +388,6 @@
   return StringValue(frac_str);
 }
 
-// package_extract_dir(package_dir, dest_dir)
-//   Extracts all files from the package underneath package_dir and writes them to the
-//   corresponding tree beneath dest_dir. Any existing files are overwritten.
-//   Example: package_extract_dir("system", "/system")
-//
-//   Note: package_dir needs to be a relative path; dest_dir needs to be an absolute path.
-Value* PackageExtractDirFn(const char* name, State* state,
-                           const std::vector<std::unique_ptr<Expr>>&argv) {
-  if (argv.size() != 2) {
-    return ErrorAbort(state, kArgsParsingFailure, "%s() expects 2 args, got %zu", name,
-                      argv.size());
-  }
-
-  std::vector<std::string> args;
-  if (!ReadArgs(state, argv, &args)) {
-    return ErrorAbort(state, kArgsParsingFailure, "%s() Failed to parse the argument(s)", name);
-  }
-  const std::string& zip_path = args[0];
-  const std::string& dest_path = args[1];
-
-  ZipArchiveHandle za = static_cast<UpdaterInfo*>(state->cookie)->package_zip;
-
-  // To create a consistent system image, never use the clock for timestamps.
-  constexpr struct utimbuf timestamp = { 1217592000, 1217592000 };  // 8/1/2008 default
-
-  bool success = ExtractPackageRecursive(za, zip_path, dest_path, &timestamp, sehandle);
-
-  return StringValue(success ? "t" : "");
-}
-
 // package_extract_file(package_file[, dest_file])
 //   Extracts a single package_file from the update package and writes it to dest_file,
 //   overwriting existing files if necessary. Without the dest_file argument, returns the
@@ -1037,7 +1006,6 @@
   RegisterFunction("format", FormatFn);
   RegisterFunction("show_progress", ShowProgressFn);
   RegisterFunction("set_progress", SetProgressFn);
-  RegisterFunction("package_extract_dir", PackageExtractDirFn);
   RegisterFunction("package_extract_file", PackageExtractFileFn);
 
   RegisterFunction("getprop", GetPropFn);