installd: Implement support for userdata snapshot and restore.
Adds two binder APIs:
- snapshotAppData: Makes a copy of the apps credential encrypted
and/or device encrypted data for a given user to one of
/data/misc_[ce|de]/rollback. This path is writable only by
installd.
- restoreAppDataSnapshot: Restores a copy of the apps credential
encrypted and/or device encrypted data from a snapshot, if one
exists.
Implemented for use from RollbackManagerService, which will make
a transient copy of an app package as well as its data in order to
roll them back within a specified window.
Bug: 112431924
Test: installd_utils_test, installd_service_test
Change-Id: I3e4d36c11e52fb885b585b1946e215cf986206fd
Merged-In: I3e4d36c11e52fb885b585b1946e215cf986206fd
diff --git a/cmds/installd/utils.cpp b/cmds/installd/utils.cpp
index 74ad184..6582ba5 100644
--- a/cmds/installd/utils.cpp
+++ b/cmds/installd/utils.cpp
@@ -192,6 +192,27 @@
return StringPrintf("%s/user_de/%u", data.c_str(), userid);
}
+
+std::string create_data_misc_ce_rollback_path(const char* volume_uuid, userid_t user) {
+ return StringPrintf("%s/misc_ce/%u/rollback", create_data_path(volume_uuid).c_str(), user);
+}
+
+std::string create_data_misc_de_rollback_path(const char* volume_uuid, userid_t user) {
+ return StringPrintf("%s/misc_de/%u/rollback", create_data_path(volume_uuid).c_str(), user);
+}
+
+std::string create_data_misc_ce_rollback_package_path(const char* volume_uuid,
+ userid_t user, const char* package_name) {
+ return StringPrintf("%s/%s",
+ create_data_misc_ce_rollback_path(volume_uuid, user).c_str(), package_name);
+}
+
+std::string create_data_misc_de_rollback_package_path(const char* volume_uuid,
+ userid_t user, const char* package_name) {
+ return StringPrintf("%s/%s",
+ create_data_misc_de_rollback_path(volume_uuid, user).c_str(), package_name);
+}
+
/**
* Create the path name for media for a certain userid.
*/