Installd: Refactor in preparation for OTA
Refactor installd code so reuse with a few key plugin functions is
possible. Do a bit of code cleanup.
Bug: 25612095
Change-Id: I544604f0a391583a4c07887a8234343a3a255942
diff --git a/cmds/installd/globals.cpp b/cmds/installd/globals.cpp
new file mode 100644
index 0000000..bee2790
--- /dev/null
+++ b/cmds/installd/globals.cpp
@@ -0,0 +1,132 @@
+/*
+** Copyright 2015, The Android Open Source Project
+**
+** Licensed under the Apache License, Version 2.0 (the "License");
+** you may not use this file except in compliance with the License.
+** You may obtain a copy of the License at
+**
+** http://www.apache.org/licenses/LICENSE-2.0
+**
+** Unless required by applicable law or agreed to in writing, software
+** distributed under the License is distributed on an "AS IS" BASIS,
+** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+** See the License for the specific language governing permissions and
+** limitations under the License.
+*/
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <cutils/log.h> // TODO: Move everything to base::logging.
+
+#include <globals.h>
+#include <installd_constants.h>
+#include <utils.h>
+
+#ifndef LOG_TAG
+#define LOG_TAG "installd"
+#endif
+
+namespace android {
+namespace installd {
+
+/* Directory records that are used in execution of commands. */
+dir_rec_t android_app_dir;
+dir_rec_t android_app_ephemeral_dir;
+dir_rec_t android_app_lib_dir;
+dir_rec_t android_app_private_dir;
+dir_rec_t android_asec_dir;
+dir_rec_t android_data_dir;
+dir_rec_t android_media_dir;
+dir_rec_t android_mnt_expand_dir;
+
+dir_rec_array_t android_system_dirs;
+
+/**
+ * Initialize all the global variables that are used elsewhere. Returns 0 upon
+ * success and -1 on error.
+ */
+void free_globals() {
+ size_t i;
+
+ for (i = 0; i < android_system_dirs.count; i++) {
+ if (android_system_dirs.dirs[i].path != NULL) {
+ free(android_system_dirs.dirs[i].path);
+ }
+ }
+
+ free(android_system_dirs.dirs);
+}
+
+bool init_globals_from_data_and_root(const char* data, const char* root) {
+ // Get the android data directory.
+ if (get_path_from_string(&android_data_dir, data) < 0) {
+ return false;
+ }
+
+ // Get the android app directory.
+ if (copy_and_append(&android_app_dir, &android_data_dir, APP_SUBDIR) < 0) {
+ return false;
+ }
+
+ // Get the android protected app directory.
+ if (copy_and_append(&android_app_private_dir, &android_data_dir, PRIVATE_APP_SUBDIR) < 0) {
+ return false;
+ }
+
+ // Get the android ephemeral app directory.
+ if (copy_and_append(&android_app_ephemeral_dir, &android_data_dir, EPHEMERAL_APP_SUBDIR) < 0) {
+ return -1;
+ }
+
+ // Get the android app native library directory.
+ if (copy_and_append(&android_app_lib_dir, &android_data_dir, APP_LIB_SUBDIR) < 0) {
+ return false;
+ }
+
+ // Get the sd-card ASEC mount point.
+ if (get_path_from_env(&android_asec_dir, "ASEC_MOUNTPOINT") < 0) {
+ return false;
+ }
+
+ // Get the android media directory.
+ if (copy_and_append(&android_media_dir, &android_data_dir, MEDIA_SUBDIR) < 0) {
+ return false;
+ }
+
+ // Get the android external app directory.
+ if (get_path_from_string(&android_mnt_expand_dir, "/mnt/expand/") < 0) {
+ return false;
+ }
+
+ // Take note of the system and vendor directories.
+ android_system_dirs.count = 4;
+
+ android_system_dirs.dirs = (dir_rec_t*) calloc(android_system_dirs.count, sizeof(dir_rec_t));
+ if (android_system_dirs.dirs == NULL) {
+ ALOGE("Couldn't allocate array for dirs; aborting\n");
+ return false;
+ }
+
+ dir_rec_t android_root_dir;
+ if (get_path_from_string(&android_root_dir, root) < 0) {
+ return false;
+ }
+
+ android_system_dirs.dirs[0].path = build_string2(android_root_dir.path, APP_SUBDIR);
+ android_system_dirs.dirs[0].len = strlen(android_system_dirs.dirs[0].path);
+
+ android_system_dirs.dirs[1].path = build_string2(android_root_dir.path, PRIV_APP_SUBDIR);
+ android_system_dirs.dirs[1].len = strlen(android_system_dirs.dirs[1].path);
+
+ android_system_dirs.dirs[2].path = strdup("/vendor/app/");
+ android_system_dirs.dirs[2].len = strlen(android_system_dirs.dirs[2].path);
+
+ android_system_dirs.dirs[3].path = strdup("/oem/app/");
+ android_system_dirs.dirs[3].len = strlen(android_system_dirs.dirs[3].path);
+
+ return true;
+}
+
+} // namespace installd
+} // namespace android