From 1251ef0bcfb82ff7aef2c4472620e6565d0c4ba6 Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaegeuk@google.com>
Date: Sun, 29 Jul 2018 06:56:57 -0700
Subject: [PATCH] vold: metadata encryption: ensure F2FS GC targets correct
 device.

This fixes F2FS GC failure in idle-maint.

Bug: 111953875
Change-Id: I1d10802121d5641cf9ba780fee249affd2cf6ffe
Merged-In: I1d10802121d5641cf9ba780fee249affd2cf6ffe
Test: Tested by hand
Signed-off-by: Jaegeuk Kim <jaegeuk@google.com>
---
 IdleMaint.cpp         | 8 +++++---
 model/PrivateVolume.h | 1 +
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/IdleMaint.cpp b/IdleMaint.cpp
index b4b7746..459b3b8 100644
--- a/IdleMaint.cpp
+++ b/IdleMaint.cpp
@@ -15,6 +15,7 @@
  */
 
 #include "IdleMaint.h"
+#include "FileDeviceUtils.h"
 #include "Utils.h"
 #include "VolumeManager.h"
 #include "model/PrivateVolume.h"
@@ -92,8 +93,8 @@ static void addFromVolumeManager(std::list<std::string>* paths,
             } else if (path_type == PathTypes::kBlkDevice) {
                 std::string gc_path;
                 const std::string& fs_type = vol->getFsType();
-                if (fs_type == "f2fs" &&
-                    Realpath(vol->getRawDevPath(), &gc_path)) {
+                if (fs_type == "f2fs" && (Realpath(vol->getRawDmDevPath(), &gc_path) ||
+                                          Realpath(vol->getRawDevPath(), &gc_path))) {
                     paths->push_back(std::string("/sys/fs/") + fs_type +
                                      "/" + Basename(gc_path));
                 }
@@ -137,7 +138,8 @@ static void addFromFstab(std::list<std::string>* paths, PathTypes path_type) {
         } else if (path_type == PathTypes::kBlkDevice) {
             std::string gc_path;
             if (std::string(fstab->recs[i].fs_type) == "f2fs" &&
-                Realpath(fstab->recs[i].blk_device, &gc_path)) {
+                Realpath(android::vold::BlockDeviceForPath(
+                    std::string(fstab->recs[i].mount_point) + "/"), &gc_path)) {
                 paths->push_back(std::string("/sys/fs/") + fstab->recs[i].fs_type +
                                  "/" + Basename(gc_path));
             }
diff --git a/model/PrivateVolume.h b/model/PrivateVolume.h
index 9508671..9a61f8d 100644
--- a/model/PrivateVolume.h
+++ b/model/PrivateVolume.h
@@ -41,6 +41,7 @@ public:
     virtual ~PrivateVolume();
     const std::string& getFsType() { return mFsType; };
     const std::string& getRawDevPath() { return mRawDevPath; };
+    const std::string& getRawDmDevPath() { return mDmDevPath; };
 
 protected:
     status_t doCreate() override;