am 1c8464e1: App data backup security policy.
* commit '1c8464e1365950538e9e4647a4f220910f79ab1e':
App data backup security policy.
diff --git a/app.te b/app.te
index b3cd7cc..7cd8c5a 100644
--- a/app.te
+++ b/app.te
@@ -201,3 +201,10 @@
# are examined.
allow appdomain isolated_app:unix_stream_socket { read write };
allow isolated_app appdomain:unix_stream_socket { read write };
+
+# Backup ability for every app. BMS opens and passes the fd
+# to any app that has backup ability. Hence, no open permissions here.
+allow { appdomain isolated_app } backup_data_file:file { read write };
+allow { appdomain isolated_app } cache_backup_file:file { read write };
+# Backup ability using 'adb backup'
+allow { appdomain isolated_app } system_data_file:lnk_file getattr;
diff --git a/file.te b/file.te
index 64c8de6..4dbf1c8 100644
--- a/file.te
+++ b/file.te
@@ -55,6 +55,9 @@
type platform_app_data_file, file_type, data_file_type, mlstrustedobject;
# Default type for anything under /cache
type cache_file, file_type, mlstrustedobject;
+# Type for /cache/.*\.{data|restore} and default
+# type for anything under /cache/backup
+type cache_backup_file, file_type, mlstrustedobject;
# Default type for anything under /efs
type efs_file, file_type;
# Type for wallpaper file.
@@ -63,6 +66,8 @@
type asec_apk_file, file_type, data_file_type;
# /data/app-asec
type asec_image_file, file_type, data_file_type;
+# /data/backup and /data/secure/backup
+type backup_data_file, file_type, data_file_type, mlstrustedobject;
# All devices have bluetooth efs files. But they
# vary per device, so this type is used in per
diff --git a/file_contexts b/file_contexts
index 837ee1d..b2d253a 100644
--- a/file_contexts
+++ b/file_contexts
@@ -140,6 +140,8 @@
# Data files
#
/data(/.*)? u:object_r:system_data_file:s0
+/data/backup(/.*)? u:object_r:backup_data_file:s0
+/data/secure/backup(/.*)? u:object_r:backup_data_file:s0
/data/drm(/.*)? u:object_r:drm_data_file:s0
/data/gps(/.*)? u:object_r:gps_data_file:s0
/data/dalvik-cache(/.*)? u:object_r:dalvikcache_data_file:s0
@@ -170,6 +172,10 @@
# Cache files
#
/cache(/.*)? u:object_r:cache_file:s0
+/cache/.*\.data u:object_r:cache_backup_file:s0
+/cache/.*\.restore u:object_r:cache_backup_file:s0
+# LocalTransport (backup) uses this directory
+/cache/backup(/.*)? u:object_r:cache_backup_file:s0
#############################
# sysfs files
#
diff --git a/system.te b/system.te
index 85b4347..3ede14a 100644
--- a/system.te
+++ b/system.te
@@ -189,8 +189,8 @@
allow system system_wpa_socket:sock_file create_file_perms;
# Manage cache files.
-allow system cache_file:dir create_dir_perms;
-allow system cache_file:file create_file_perms;
+allow system cache_file:dir { relabelfrom create_dir_perms };
+allow system cache_file:file { relabelfrom create_file_perms };
# Run system programs, e.g. dexopt.
allow system system_file:file x_file_perms;
@@ -212,3 +212,12 @@
# connect to vpn tunnel
allow system mtp:unix_stream_socket { connectto };
+
+# BackupManagerService lets PMS create a data backup file
+allow system cache_backup_file:file create_file_perms;
+# Relabel /data/backup
+allow system backup_data_file:dir { relabelto relabelfrom };
+# Relabel /cache/.*\.{data|restore}
+allow system cache_backup_file:file { relabelto relabelfrom };
+# LocalTransport creates and relabels /cache/backup
+allow system cache_backup_file:dir { relabelto relabelfrom create_dir_perms };
