recovery: add --fsck_unshare_blocks option for adb remount
Allow "adb remount" on deduplicated filesystems to reboot into recovery
and run e2fsck to undo deduplication. The e2fsck binary is copied from
the system partition into tmpfs, and the system partition is unmounted
so e2fsck can run safely.
Bug: 64109868
Test: recovery with --fsck_unshare_blocks; adb remount
Change-Id: I7558749b018b58f3c4339e51a95831dbd5be1ae3
diff --git a/fsck_unshare_blocks.h b/fsck_unshare_blocks.h
new file mode 100644
index 0000000..9de8ef9
--- /dev/null
+++ b/fsck_unshare_blocks.h
@@ -0,0 +1,22 @@
+/*
+ * 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