4 files changed, 1 insertions, 184 deletions

diff --git a/Android.bp b/Android.bp
index 3a8e97883..4032bcc19 100644
--- a/Android.bp
+++ b/Android.bp
@@ -90,7 +90,6 @@ cc_library_static {
     ],
 
     srcs: [
-        "fsck_unshare_blocks.cpp",
         "recovery.cpp",
     ],
 
diff --git a/fsck_unshare_blocks.cpp b/fsck_unshare_blocks.cpp
deleted file mode 100644
index e0b2d966b..000000000
--- a/fsck_unshare_blocks.cpp
+++ /dev/null
@@ -1,151 +0,0 @@
-/*
- * Copyright (C) 2018 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 "fsck_unshare_blocks.h"
-
-#include <errno.h>
-#include <fcntl.h>
-#include <spawn.h>
-#include <string.h>
-#include <sys/mount.h>
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/wait.h>
-#include <unistd.h>
-
-#include <algorithm>
-#include <memory>
-#include <string>
-#include <vector>
-
-#include <android-base/logging.h>
-#include <android-base/properties.h>
-#include <android-base/unique_fd.h>
-#include <fs_mgr/roots.h>
-
-#include "recovery_utils/roots.h"
-
-static constexpr const char* SYSTEM_E2FSCK_BIN = "/system/bin/e2fsck_static";
-static constexpr const char* TMP_E2FSCK_BIN = "/tmp/e2fsck.bin";
-
-static bool copy_file(const char* source, const char* dest) {
-  android::base::unique_fd source_fd(open(source, O_RDONLY));
-  if (source_fd < 0) {
-    PLOG(ERROR) << "open %s failed" << source;
-    return false;
-  }
-
-  android::base::unique_fd dest_fd(open(dest, O_CREAT | O_WRONLY, S_IRWXU));
-  if (dest_fd < 0) {
-    PLOG(ERROR) << "open %s failed" << dest;
-    return false;
-  }
-
-  for (;;) {
-    char buf[4096];
-    ssize_t rv = read(source_fd, buf, sizeof(buf));
-    if (rv < 0) {
-      PLOG(ERROR) << "read failed";
-      return false;
-    }
-    if (rv == 0) {
-      break;
-    }
-    if (write(dest_fd, buf, rv) != rv) {
-      PLOG(ERROR) << "write failed";
-      return false;
-    }
-  }
-  return true;
-}
-
-static bool run_e2fsck(const std::string& partition) {
-  Volume* volume = volume_for_mount_point(partition);
-  if (!volume) {
-    LOG(INFO) << "No fstab entry for " << partition << ", skipping.";
-    return true;
-  }
-
-  LOG(INFO) << "Running e2fsck on device " << volume->blk_device;
-
-  std::vector<std::string> args = { TMP_E2FSCK_BIN, "-p", "-E", "unshare_blocks",
-                                    volume->blk_device };
-  std::vector<char*> argv(args.size());
-  std::transform(args.cbegin(), args.cend(), argv.begin(),
-                 [](const std::string& arg) { return const_cast<char*>(arg.c_str()); });
-  argv.push_back(nullptr);
-
-  pid_t child;
-  char* env[] = { nullptr };
-  if (posix_spawn(&child, argv[0], nullptr, nullptr, argv.data(), env)) {
-    PLOG(ERROR) << "posix_spawn failed";
-    return false;
-  }
-
-  int status = 0;
-  int ret = TEMP_FAILURE_RETRY(waitpid(child, &status, 0));
-  if (ret < 0) {
-    PLOG(ERROR) << "waitpid failed";
-    return false;
-  }
-  if (!WIFEXITED(status)) {
-    LOG(ERROR) << "e2fsck exited abnormally: " << status;
-    return false;
-  }
-  int return_code = WEXITSTATUS(status);
-  if (return_code >= 8) {
-    LOG(ERROR) << "e2fsck could not unshare blocks: " << return_code;
-    return false;
-  }
-
-  LOG(INFO) << "Successfully unshared blocks on " << partition;
-  return true;
-}
-
-bool do_fsck_unshare_blocks() {
-  // List of partitions we will try to e2fsck -E unshare_blocks.
-  std::vector<std::string> partitions = { "/odm", "/oem", "/product", "/vendor" };
-
-  // Temporarily mount system so we can copy e2fsck_static.
-  auto system_root = android::fs_mgr::GetSystemRoot();
-  bool mounted = ensure_path_mounted_at(system_root, "/mnt/system") != -1;
-  partitions.push_back(system_root);
-
-  if (!mounted) {
-    LOG(ERROR) << "Failed to mount system image.";
-    return false;
-  }
-  if (!copy_file(SYSTEM_E2FSCK_BIN, TMP_E2FSCK_BIN)) {
-    LOG(ERROR) << "Could not copy e2fsck to /tmp.";
-    return false;
-  }
-  if (umount("/mnt/system") < 0) {
-    PLOG(ERROR) << "umount failed";
-    return false;
-  }
-
-  bool ok = true;
-  for (const auto& partition : partitions) {
-    ok &= run_e2fsck(partition);
-  }
-
-  if (ok) {
-    LOG(INFO) << "Finished running e2fsck.";
-  } else {
-    LOG(ERROR) << "Finished running e2fsck, but not all partitions succceeded.";
-  }
-  return ok;
-}
diff --git a/fsck_unshare_blocks.h b/fsck_unshare_blocks.h
deleted file mode 100644
index 9de8ef9a3..000000000
--- a/fsck_unshare_blocks.h
+++ /dev/null
@@ -1,22 +0,0 @@
-/*
- * Copyright (C) 2018 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 _FILESYSTEM_CMDS_H
-#define _FILESYSTEM_CMDS_H
-
-bool do_fsck_unshare_blocks();
-
-#endif  // _FILESYSTEM_CMDS_H
diff --git a/recovery.cpp b/recovery.cpp
index e4b8e45fb..cbf29b6c1 100644
--- a/recovery.cpp
+++ b/recovery.cpp
@@ -45,7 +45,6 @@
 #include <ziparchive/zip_archive.h>
 
 #include "bootloader_message/bootloader_message.h"
-#include "fsck_unshare_blocks.h"
 #include "install/adb_install.h"
 #include "install/fuse_install.h"
 #include "install/install.h"
@@ -524,7 +523,6 @@ static void log_failure_code(ErrorCode code, const std::string& update_package)
 Device::BuiltinAction start_recovery(Device* device, const std::vector<std::string>& args) {
   static constexpr struct option OPTIONS[] = {
     { "fastboot", no_argument, nullptr, 0 },
-    { "fsck_unshare_blocks", no_argument, nullptr, 0 },
     { "install_with_fuse", no_argument, nullptr, 0 },
     { "just_exit", no_argument, nullptr, 'x' },
     { "locale", required_argument, nullptr, 0 },
@@ -557,7 +555,6 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
   bool rescue = false;
   bool just_exit = false;
   bool shutdown_after = false;
-  bool fsck_unshare_blocks = false;
   int retry_count = 0;
   bool security_update = false;
   std::string locale;
@@ -580,9 +577,7 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
         break;
       case 0: {
         std::string option = OPTIONS[option_index].name;
-        if (option == "fsck_unshare_blocks") {
-          fsck_unshare_blocks = true;
-        } else if (option == "install_with_fuse") {
+        if (option == "install_with_fuse") {
           install_with_fuse = true;
         } else if (option == "locale" || option == "fastboot" || option == "reason") {
           // Handled in recovery_main.cpp
@@ -779,10 +774,6 @@ Device::BuiltinAction start_recovery(Device* device, const std::vector<std::stri
     save_current_log = true;
     status = ApplyFromAdb(device, true /* rescue_mode */, &next_action);
     ui->Print("\nInstall from ADB complete (status: %d).\n", status);
-  } else if (fsck_unshare_blocks) {
-    if (!do_fsck_unshare_blocks()) {
-      status = INSTALL_ERROR;
-    }
   } else if (!just_exit) {
     // If this is an eng or userdebug build, automatically turn on the text display if no command
     // is specified. Note that this should be called before setting the background to avoid