commit 71cd43f4340209780d441c234b3846646705e948
author Andreas Huber <andih@google.com> Mon Jan 22 11:25:29 2018 -0800
committer Andreas Huber <andih@google.com> Tue Jan 23 14:34:55 2018 -0800
tree b03652ec107286fb586262b7b09d4ab3c5281230
parent 9929e7db3236070a6371ca9535085343a8d6a467

Fingerprint data is now stored in one of two ways depending on the

shipping API version:

For devices shipped before Android P nothing changes, data
is stored under /data/system/users/<user-id>/fpdata/...

Devices shipped from now on will instead store
fingerprint data under /data/vendor_de/<user-id>/fpdata.

Support for /data/vendor_de and /data/vendor_ce has been added to vold.

Bug: 36997597
Change-Id: I615e90d1c9ab08e768a8713968fa043598a0a526
Test: manually

vold_prepare_subdirs.cpp

diff --git a/vold_prepare_subdirs.cpp b/vold_prepare_subdirs.cpp
index 02bedde..1b466e9 100644
--- a/vold_prepare_subdirs.cpp
+++ b/vold_prepare_subdirs.cpp
@@ -38,6 +38,8 @@
 #include "Utils.h"
 #include "android/os/IVold.h"
 
+#include <private/android_filesystem_config.h>
+
 static void usage(const char* progname) {
     std::cerr << "Usage: " << progname << " [ prepare | destroy ] <volume_uuid> <user_id> <flags>"
               << std::endl;
@@ -125,6 +127,11 @@
             auto misc_de_path = android::vold::BuildDataMiscDePath(user_id);
             if (!prepare_dir(sehandle, 0700, 0, 0, misc_de_path + "/vold")) return false;
             if (!prepare_dir(sehandle, 0700, 0, 0, misc_de_path + "/storaged")) return false;
+
+            auto vendor_de_path = android::vold::BuildDataVendorDePath(user_id);
+            if (!prepare_dir(sehandle, 0700, AID_SYSTEM, AID_SYSTEM, vendor_de_path + "/fpdata")) {
+                return false;
+            }
         }
         if (flags & android::os::IVold::STORAGE_FLAG_CE) {
             auto misc_ce_path = android::vold::BuildDataMiscCePath(user_id);
@@ -141,10 +148,16 @@
         if (flags & android::os::IVold::STORAGE_FLAG_CE) {
             auto misc_ce_path = android::vold::BuildDataMiscCePath(user_id);
             res &= rmrf_contents(misc_ce_path);
+
+            auto vendor_ce_path = android::vold::BuildDataVendorCePath(user_id);
+            res &= rmrf_contents(vendor_ce_path);
         }
         if (flags & android::os::IVold::STORAGE_FLAG_DE) {
             auto misc_de_path = android::vold::BuildDataMiscDePath(user_id);
             res &= rmrf_contents(misc_de_path);
+
+            auto vendor_de_path = android::vold::BuildDataVendorDePath(user_id);
+            res &= rmrf_contents(vendor_de_path);
         }
     }
     return res;