Fixes De data is not backed up correctly when user locked (1/n)
https://android.googlesource.com/platform/frameworks/native/+/fda19ecdd6df8f43d3368781a633792723fb9965/cmds/installd/InstalldNativeService.cpp#933
When an APK is stage installed, snapshotAppData(..., FLAG_STORAGE_DE)
is called before user unlocked. The function bails out early at #937
because the folder is still encrypted.
We should move the if block at #958 above so we can back up De data
correctly even when Ce directories not ready.
Note we have to check if the De folder exists before making a copy.
(Cherry-picked from 1d643c77d3fcb7dfe0bf4dabed2964bbfca04c6f)
Bug: 169594054
Test: atest StagedRollbackTest
Merged-In: I2ca810bd9495de3bed58378a41b47863c6e8f8dd
Change-Id: I2ca810bd9495de3bed58378a41b47863c6e8f8dd
diff --git a/cmds/installd/InstalldNativeService.cpp b/cmds/installd/InstalldNativeService.cpp
index b9c1add..01eb3fe 100644
--- a/cmds/installd/InstalldNativeService.cpp
+++ b/cmds/installd/InstalldNativeService.cpp
@@ -940,6 +940,33 @@
auto scope_guard = android::base::make_scope_guard(deleter);
+ if (storageFlags & FLAG_STORAGE_DE) {
+ auto from = create_data_user_de_package_path(volume_uuid, user, package_name);
+ auto to = create_data_misc_de_rollback_path(volume_uuid, user, snapshotId);
+ auto rollback_package_path = create_data_misc_de_rollback_package_path(volume_uuid, user,
+ snapshotId, package_name);
+
+ int rc = create_dir_if_needed(to.c_str(), kRollbackFolderMode);
+ if (rc != 0) {
+ return error(rc, "Failed to create folder " + to);
+ }
+
+ rc = delete_dir_contents(rollback_package_path, true /* ignore_if_missing */);
+ if (rc != 0) {
+ return error(rc, "Failed clearing existing snapshot " + rollback_package_path);
+ }
+
+ // Check if we have data to copy.
+ if (access(from.c_str(), F_OK) == 0) {
+ rc = copy_directory_recursive(from.c_str(), to.c_str());
+ }
+ if (rc != 0) {
+ res = error(rc, "Failed copying " + from + " to " + to);
+ clear_de_on_exit = true;
+ return res;
+ }
+ }
+
// The app may not have any data at all, in which case it's OK to skip here.
auto from_ce = create_data_user_ce_package_path(volume_uuid, user, package_name);
if (access(from_ce.c_str(), F_OK) != 0) {
@@ -965,30 +992,6 @@
LOG(WARNING) << "Failed to clear code_cache of app " << packageName;
}
- if (storageFlags & FLAG_STORAGE_DE) {
- auto from = create_data_user_de_package_path(volume_uuid, user, package_name);
- auto to = create_data_misc_de_rollback_path(volume_uuid, user, snapshotId);
- auto rollback_package_path = create_data_misc_de_rollback_package_path(volume_uuid, user,
- snapshotId, package_name);
-
- int rc = create_dir_if_needed(to.c_str(), kRollbackFolderMode);
- if (rc != 0) {
- return error(rc, "Failed to create folder " + to);
- }
-
- rc = delete_dir_contents(rollback_package_path, true /* ignore_if_missing */);
- if (rc != 0) {
- return error(rc, "Failed clearing existing snapshot " + rollback_package_path);
- }
-
- rc = copy_directory_recursive(from.c_str(), to.c_str());
- if (rc != 0) {
- res = error(rc, "Failed copying " + from + " to " + to);
- clear_de_on_exit = true;
- return res;
- }
- }
-
if (storageFlags & FLAG_STORAGE_CE) {
auto from = create_data_user_ce_package_path(volume_uuid, user, package_name);
auto to = create_data_misc_ce_rollback_path(volume_uuid, user, snapshotId);
