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: Ibc7cc33b756f64abe68a749c0ada0ca4f6d92514
Test: manually

private/compat/26.0/26.0.ignore.cil

@@ -34,6 +34,7 @@
     exported2_vold_prop
     exported3_default_prop
     exported3_system_prop
+    fingerprint_vendor_data_file
     fs_bpf
     hal_broadcastradio_hwservice
     hal_cas_hwservice

private/file_contexts

@@ -415,6 +415,9 @@
 # Fingerprint data
 /data/system/users/[0-9]+/fpdata(/.*)? u:object_r:fingerprintd_data_file:s0
 
+# Fingerprint vendor data file
+/data/vendor_de/[0-9]+/fpdata(/.*)? u:object_r:fingerprint_vendor_data_file:s0
+
 # Bootchart data
 /data/bootchart(/.*)?		u:object_r:bootchart_data_file:s0
 

private/vold_prepare_subdirs.te

@@ -13,3 +13,4 @@ allow vold_prepare_subdirs system_data_file:dir { open read write add_name remov
 allow vold_prepare_subdirs vold_data_file:dir { create open read write search getattr setattr remove_name rmdir };
 allow vold_prepare_subdirs vold_data_file:file { getattr unlink };
 allow vold_prepare_subdirs storaged_data_file:dir create_dir_perms;
+allow vold_prepare_subdirs fingerprint_vendor_data_file:dir create_dir_perms;

public/domain.te

@@ -765,6 +765,7 @@ full_treble_only(`
     -data_between_core_and_vendor_violators
     -init
     -vendor_init
+    -vold_prepare_subdirs
   } {
     data_file_type
     -core_data_file_type
@@ -775,6 +776,7 @@ full_treble_only(`
     -data_between_core_and_vendor_violators
     -init
     -vendor_init
+    -vold_prepare_subdirs
     } {
       data_file_type
       -core_data_file_type

public/file.te

@@ -291,6 +291,8 @@ type backup_data_file, file_type, data_file_type, core_data_file_type, mlstruste
 type bluetooth_efs_file, file_type;
 # Type for fingerprint template file
 type fingerprintd_data_file, file_type, data_file_type, core_data_file_type;
+# Type for _new_ fingerprint template file
+type fingerprint_vendor_data_file, file_type, data_file_type;
 # Type for appfuse file.
 type app_fuse_file, file_type, data_file_type, core_data_file_type, mlstrustedobject;
 

public/hal_fingerprint.te

@@ -8,5 +8,10 @@ allow hal_fingerprint_client hal_fingerprint_hwservice:hwservice_manager find;
 # For memory allocation
 allow hal_fingerprint ion_device:chr_file r_file_perms;
 
+allow hal_fingerprint fingerprint_vendor_data_file:file { create_file_perms };
+allow hal_fingerprint fingerprint_vendor_data_file:dir rw_dir_perms;
+
 r_dir_file(hal_fingerprint, cgroup)
 r_dir_file(hal_fingerprint, sysfs)
+
+

public/tee.te

@@ -5,3 +5,7 @@ type tee, domain;
 
 # Device(s) for communicating with the TEE
 type tee_device, dev_type;
+
+allow tee fingerprint_vendor_data_file:dir rw_dir_perms;
+allow tee fingerprint_vendor_data_file:file create_file_perms;
+