am 20642ae7: Give secondary users read-only physical cards.

* commit '20642ae71aa93ec2658d09c92a1ffc3844f5a555':
  Give secondary users read-only physical cards.
diff --git a/PublicVolume.cpp b/PublicVolume.cpp
index 29a357f..762eb04 100644
--- a/PublicVolume.cpp
+++ b/PublicVolume.cpp
@@ -149,6 +149,7 @@
             if (execl(kFusePath, kFusePath,
                     "-u", "1023", // AID_MEDIA_RW
                     "-g", "1023", // AID_MEDIA_RW
+                    "-U", std::to_string(getMountUserId()).c_str(),
                     "-w",
                     mRawPath.c_str(),
                     stableName.c_str(),
@@ -159,6 +160,7 @@
             if (execl(kFusePath, kFusePath,
                     "-u", "1023", // AID_MEDIA_RW
                     "-g", "1023", // AID_MEDIA_RW
+                    "-U", std::to_string(getMountUserId()).c_str(),
                     mRawPath.c_str(),
                     stableName.c_str(),
                     NULL)) {