Installd: Move app image A/B artifact
In addition to odex, also move art file.
Bug: 25612095
Change-Id: I69f4c2b1e7283c9a9c361f57f5233e66679c5c28
diff --git a/cmds/installd/commands.cpp b/cmds/installd/commands.cpp
index 7b4ca9e..8999441 100644
--- a/cmds/installd/commands.cpp
+++ b/cmds/installd/commands.cpp
@@ -2044,6 +2044,37 @@
return true;
}
+// Move/rename a B artifact (from) to an A artifact (to).
+static bool move_ab_path(const std::string& b_path, const std::string& a_path) {
+ // Check whether B exists.
+ {
+ struct stat s;
+ if (stat(b_path.c_str(), &s) != 0) {
+ // Silently ignore for now. The service calling this isn't smart enough to understand
+ // lack of artifacts at the moment.
+ return false;
+ }
+ if (!S_ISREG(s.st_mode)) {
+ LOG(ERROR) << "A/B artifact " << b_path << " is not a regular file.";
+ // Try to unlink, but swallow errors.
+ unlink(b_path.c_str());
+ return false;
+ }
+ }
+
+ // Rename B to A.
+ if (!unlink_and_rename(b_path.c_str(), a_path.c_str())) {
+ // Delete the b_path so we don't try again (or fail earlier).
+ if (unlink(b_path.c_str()) != 0) {
+ PLOG(ERROR) << "Could not unlink " << b_path;
+ }
+
+ return false;
+ }
+
+ return true;
+}
+
int move_ab(const char* apk_path, const char* instruction_set, const char* oat_dir) {
if (apk_path == nullptr || instruction_set == nullptr || oat_dir == nullptr) {
LOG(ERROR) << "Cannot move_ab with null input";
@@ -2062,37 +2093,35 @@
if (!calculate_oat_file_path(a_path, oat_dir, apk_path, instruction_set)) {
return -1;
}
+ const std::string a_image_path = create_image_filename(a_path);
// B path = A path + ".b"
- std::string b_path = StringPrintf("%s.b", a_path);
+ const std::string b_path = StringPrintf("%s.b", a_path);
+ const std::string b_image_path = StringPrintf("%s.b", a_image_path.c_str());
- // Check whether B exists.
- {
- struct stat s;
- if (stat(b_path.c_str(), &s) != 0) {
- // Silently ignore for now. The service calling this isn't smart enough to understand
- // lack of artifacts at the moment.
- return -1;
+ bool oat_success = move_ab_path(b_path, a_path);
+ bool success;
+
+ if (oat_success) {
+ // Note: we can live without an app image. As such, ignore failure to move the image file.
+ // If we decide to require the app image, or the app image being moved correctly,
+ // then change accordingly.
+ constexpr bool kIgnoreAppImageFailure = true;
+
+ bool art_success = true;
+ if (!a_image_path.empty()) {
+ art_success = move_ab_path(b_image_path, a_image_path);
}
- if (!S_ISREG(s.st_mode)) {
- LOG(ERROR) << "A/B artifact " << b_path << " is not a regular file.";
- // Try to unlink, but swallow errors.
- unlink(b_path.c_str());
- return -1;
- }
+
+ success = art_success || kIgnoreAppImageFailure;
+ } else {
+ // Cleanup: delete B image, ignore errors.
+ unlink(b_image_path.c_str());
+
+ success = false;
}
- // Rename B to A.
- if (!unlink_and_rename(b_path.c_str(), a_path)) {
- // Delete the b_path so we don't try again (or fail earlier).
- if (unlink(b_path.c_str()) != 0) {
- PLOG(ERROR) << "Could not unlink " << b_path;
- }
-
- return -1;
- }
-
- return 0;
+ return success ? 0 : -1;
}
} // namespace installd