Introduce soong_filesystem_creator module type
The module generates soong-built filesystem modules. This module creates
the system partition submodule, and will create other partition
filesystem submodules in the future.
Note that not all properties of the system submodule is currently set;
some properties like `deps` are not currently set.
Test: m nothing --no-skip-soong-tests
Bug: 369682648
Change-Id: I671a9b6a61e5453117f604394191243c5ae047d9
diff --git a/fsgen/filesystem_creator.go b/fsgen/filesystem_creator.go
new file mode 100644
index 0000000..ca948f4
--- /dev/null
+++ b/fsgen/filesystem_creator.go
@@ -0,0 +1,111 @@
+// Copyright (C) 2024 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.
+
+package fsgen
+
+import (
+ "android/soong/android"
+ "android/soong/filesystem"
+ "fmt"
+ "strconv"
+
+ "github.com/google/blueprint/proptools"
+)
+
+func init() {
+ registerBuildComponents(android.InitRegistrationContext)
+}
+
+func registerBuildComponents(ctx android.RegistrationContext) {
+ ctx.RegisterModuleType("soong_filesystem_creator", filesystemCreatorFactory)
+}
+
+type filesystemCreator struct {
+ android.ModuleBase
+}
+
+func filesystemCreatorFactory() android.Module {
+ module := &filesystemCreator{}
+
+ android.InitAndroidModule(module)
+ android.AddLoadHook(module, func(ctx android.LoadHookContext) {
+ module.createInternalModules(ctx)
+ })
+
+ return module
+}
+
+func (f *filesystemCreator) createInternalModules(ctx android.LoadHookContext) {
+ f.createSystemImage(ctx)
+}
+
+func (f *filesystemCreator) createSystemImage(ctx android.LoadHookContext) {
+ baseProps := &struct {
+ Name *string
+ }{
+ Name: proptools.StringPtr(fmt.Sprintf("%s_generated_system_image", ctx.Config().DeviceProduct())),
+ }
+
+ fsProps := &(filesystem.FilesystemProperties{})
+ partitionVars := ctx.Config().ProductVariables().PartitionVarsForSoongMigrationOnlyDoNotUse
+ systemPartitionVars := partitionVars.PartitionQualifiedVariables["system"]
+
+ // BOARD_AVB_ENABLE
+ fsProps.Use_avb = proptools.BoolPtr(partitionVars.BoardAvbEnable)
+ // BOARD_AVB_KEY_PATH
+ fsProps.Avb_private_key = proptools.StringPtr(systemPartitionVars.BoardAvbKeyPath)
+ // BOARD_AVB_ALGORITHM
+ fsProps.Avb_algorithm = proptools.StringPtr(systemPartitionVars.BoardAvbAlgorithm)
+ // BOARD_AVB_SYSTEM_ROLLBACK_INDEX
+ if rollbackIndex, err := strconv.ParseInt(systemPartitionVars.BoardAvbRollbackIndex, 10, 64); err == nil {
+ fsProps.Rollback_index = proptools.Int64Ptr(rollbackIndex)
+ }
+
+ fsProps.Partition_name = proptools.StringPtr("system")
+ // BOARD_SYSTEMIMAGE_FILE_SYSTEM_TYPE
+ fsProps.Type = proptools.StringPtr(systemPartitionVars.BoardFileSystemType)
+
+ fsProps.Base_dir = proptools.StringPtr("system")
+
+ fsProps.Gen_aconfig_flags_pb = proptools.BoolPtr(true)
+
+ // Identical to that of the generic_system_image
+ fsProps.Fsverity.Inputs = []string{
+ "etc/boot-image.prof",
+ "etc/dirty-image-objects",
+ "etc/preloaded-classes",
+ "etc/classpaths/*.pb",
+ "framework/*",
+ "framework/*/*", // framework/{arch}
+ "framework/oat/*/*", // framework/oat/{arch}
+ }
+
+ // system_image properties that are not set:
+ // - filesystemProperties.Avb_hash_algorithm
+ // - filesystemProperties.File_contexts
+ // - filesystemProperties.Dirs
+ // - filesystemProperties.Symlinks
+ // - filesystemProperties.Fake_timestamp
+ // - filesystemProperties.Uuid
+ // - filesystemProperties.Mount_point
+ // - filesystemProperties.Include_make_built_files
+ // - filesystemProperties.Build_logtags
+ // - filesystemProperties.Fsverity.Libs
+ // - systemImageProperties.Linker_config_src
+ ctx.CreateModule(filesystem.SystemImageFactory, baseProps, fsProps)
+}
+
+func (f *filesystemCreator) GenerateAndroidBuildActions(ctx android.ModuleContext) {
+
+}