commit dd4bb173439e7dcd2abc05e06405ebf933b8d1f7
author Sudheer Shanka <sudheersai@google.com> Wed Jan 16 23:35:49 2019 -0800
committer Sudheer Shanka <sudheersai@google.com> Fri Jan 18 23:48:45 2019 +0000
tree 2bbe98dcafa752e57f28d62548c33f979ebfa33e
parent a892eb154e0b578571674eea5f69fa4fbf7c89da

Create new mount directory /mnt/runtime/full.

This will be used for system internals to access
secondary volumes without having to bypass sdcardfs.

Bug: 121277410
Test: manual
Exempt-From-Owner-Approval: Got approval on internal master
Change-Id: I9b3e33f6c6e426e83469b8030b02d59c02183946

model/EmulatedVolume.cpp

diff --git a/model/EmulatedVolume.cpp b/model/EmulatedVolume.cpp
index 8d9ac74..f933982 100644
--- a/model/EmulatedVolume.cpp
+++ b/model/EmulatedVolume.cpp
@@ -65,18 +65,20 @@
     mFuseDefault = StringPrintf("/mnt/runtime/default/%s", label.c_str());
     mFuseRead = StringPrintf("/mnt/runtime/read/%s", label.c_str());
     mFuseWrite = StringPrintf("/mnt/runtime/write/%s", label.c_str());
+    mFuseFull = StringPrintf("/mnt/runtime/full/%s", label.c_str());
 
     setInternalPath(mRawPath);
     setPath(StringPrintf("/storage/%s", label.c_str()));
 
     if (fs_prepare_dir(mFuseDefault.c_str(), 0700, AID_ROOT, AID_ROOT) ||
         fs_prepare_dir(mFuseRead.c_str(), 0700, AID_ROOT, AID_ROOT) ||
-        fs_prepare_dir(mFuseWrite.c_str(), 0700, AID_ROOT, AID_ROOT)) {
+        fs_prepare_dir(mFuseWrite.c_str(), 0700, AID_ROOT, AID_ROOT) ||
+        fs_prepare_dir(mFuseFull.c_str(), 0700, AID_ROOT, AID_ROOT)) {
         PLOG(ERROR) << getId() << " failed to create mount points";
         return -errno;
     }
 
-    dev_t before = GetDevice(mFuseWrite);
+    dev_t before = GetDevice(mFuseFull);
 
     if (!(mFusePid = fork())) {
         // clang-format off
@@ -104,7 +106,7 @@
     }
 
     nsecs_t start = systemTime(SYSTEM_TIME_BOOTTIME);
-    while (before == GetDevice(mFuseWrite)) {
+    while (before == GetDevice(mFuseFull)) {
         LOG(DEBUG) << "Waiting for FUSE to spin up...";
         usleep(50000);  // 50ms
 
@@ -130,14 +132,17 @@
     ForceUnmount(mFuseDefault);
     ForceUnmount(mFuseRead);
     ForceUnmount(mFuseWrite);
+    ForceUnmount(mFuseFull);
 
     rmdir(mFuseDefault.c_str());
     rmdir(mFuseRead.c_str());
     rmdir(mFuseWrite.c_str());
+    rmdir(mFuseFull.c_str());
 
     mFuseDefault.clear();
     mFuseRead.clear();
     mFuseWrite.clear();
+    mFuseFull.clear();
 
     return OK;
 }