Migrate default app data on non-FBE devices.

When a system app requests "forceDeviceEncrypted" they expect their
default app storage to point at a consistent location regardless of
device FBE support.  So when booting upgraded non-FBE devices, we
may need to migrate any data from CE to DE.  Note that on non-FBE
devices these are just semantic locations with identical protection.

This migration *only* works for non-FBE devices; changing
forceDeviceEncrypted flags on an FBE device always requires a full
data wipe.

Bug: 26668510
Change-Id: I8bd5b8ba882e6bd067c0381041b27c35d6e47788

1 files changed, 6 insertions, 0 deletions

diff --git a/cmds/installd/installd.cpp b/cmds/installd/installd.cpp
index c0ae5b7905..63290a9ba8 100644
--- a/cmds/installd/installd.cpp
+++ b/cmds/installd/installd.cpp
@@ -201,6 +201,11 @@ static int do_restorecon_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UN
     return restorecon_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]), atoi(arg[4]), arg[5]);
 }
 
+static int do_migrate_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
+    /* const char *uuid, const char *pkgname, userid_t userid, int flags */
+    return migrate_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]));
+}
+
 static int do_clear_app_data(char **arg, char reply[REPLY_MAX] ATTRIBUTE_UNUSED) {
     /* const char *uuid, const char *pkgname, userid_t userid, int flags */
     return clear_app_data(parse_null(arg[0]), arg[1], atoi(arg[2]), atoi(arg[3]));
@@ -342,6 +347,7 @@ struct cmdinfo cmds[] = {
 
     { "create_app_data",      7, do_create_app_data },
     { "restorecon_app_data",  6, do_restorecon_app_data },
+    { "migrate_app_data",     4, do_migrate_app_data },
     { "clear_app_data",       4, do_clear_app_data },
     { "destroy_app_data",     4, do_destroy_app_data },
     { "move_complete_app",    7, do_move_complete_app },