Merge "Generate FlatConfig objects from GenericConfig objects."
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
new file mode 100644
index 0000000..ce75150
--- /dev/null
+++ b/PREUPLOAD.cfg
@@ -0,0 +1,2 @@
+[Hook Scripts]
+do_not_use_DO_NOT_MERGE = ${REPO_ROOT}/build/soong/scripts/check_do_not_merge.sh ${PREUPLOAD_COMMIT}
diff --git a/core/Makefile b/core/Makefile
index a7553f0..6019452 100644
--- a/core/Makefile
+++ b/core/Makefile
@@ -4136,6 +4136,7 @@
   mkuserimg_mke2fs \
   ota_from_target_files \
   repack_bootimg \
+  secilc \
   sefcontext_compile \
   sgdisk \
   shflags \
diff --git a/core/app_prebuilt_internal.mk b/core/app_prebuilt_internal.mk
index cb1b453..ad96b5b 100644
--- a/core/app_prebuilt_internal.mk
+++ b/core/app_prebuilt_internal.mk
@@ -104,17 +104,19 @@
 
 my_enforced_uses_libraries :=
 ifdef LOCAL_ENFORCE_USES_LIBRARIES
-  my_enforced_uses_libraries := $(intermediates.COMMON)/enforce_uses_libraries.timestamp
+  my_enforced_uses_libraries := $(intermediates.COMMON)/enforce_uses_libraries.status
   $(my_enforced_uses_libraries): PRIVATE_USES_LIBRARIES := $(LOCAL_USES_LIBRARIES)
   $(my_enforced_uses_libraries): PRIVATE_OPTIONAL_USES_LIBRARIES := $(LOCAL_OPTIONAL_USES_LIBRARIES)
+  $(my_enforced_uses_libraries): PRIVATE_RELAX_CHECK := $(RELAX_USES_LIBRARY_CHECK)
   $(my_enforced_uses_libraries): $(BUILD_SYSTEM)/verify_uses_libraries.sh $(AAPT)
   $(my_enforced_uses_libraries): $(my_prebuilt_src_file)
 	@echo Verifying uses-libraries: $<
+	rm -f $@
 	aapt_binary=$(AAPT) \
 	  uses_library_names="$(strip $(PRIVATE_USES_LIBRARIES))" \
 	  optional_uses_library_names="$(strip $(PRIVATE_OPTIONAL_USES_LIBRARIES))" \
-	  $(BUILD_SYSTEM)/verify_uses_libraries.sh $<
-	touch $@
+	  relax_check="$(strip $(PRIVATE_RELAX_CHECK))" \
+	  $(BUILD_SYSTEM)/verify_uses_libraries.sh $< $@
   $(built_module) : $(my_enforced_uses_libraries)
 endif
 
diff --git a/core/config.mk b/core/config.mk
index dce347a..3bd3622 100644
--- a/core/config.mk
+++ b/core/config.mk
@@ -479,6 +479,17 @@
 USE_D8 := true
 .KATI_READONLY := USE_D8
 
+# Whether to fail immediately if verify_uses_libraries check fails, or to keep
+# going and restrict dexpreopt to not compile any code for the failed module.
+#
+# The intended use case for this flag is to have a smoother migration path for
+# the Java modules that need to add <uses-library> information in their build
+# files. The flag allows to quickly silence build errors. This flag should be
+# used with caution and only as a temporary measure, as it masks real errors
+# and affects performance.
+RELAX_USES_LIBRARY_CHECK ?= false
+.KATI_READONLY := RELAX_USES_LIBRARY_CHECK
+
 #
 # Tools that are prebuilts for TARGET_BUILD_USE_PREBUILT_SDKS
 #
diff --git a/core/dex_preopt_config.mk b/core/dex_preopt_config.mk
index 06e2fb7..dda7de0 100644
--- a/core/dex_preopt_config.mk
+++ b/core/dex_preopt_config.mk
@@ -105,6 +105,7 @@
   $(call add_json_bool, IsEng,                                   $(filter eng,$(TARGET_BUILD_VARIANT)))
   $(call add_json_bool, SanitizeLite,                            $(SANITIZE_LITE))
   $(call add_json_bool, DefaultAppImages,                        $(WITH_DEX_PREOPT_APP_IMAGE))
+  $(call add_json_bool, RelaxUsesLibraryCheck,                   $(filter true,$(RELAX_USES_LIBRARY_CHECK)))
   $(call add_json_str,  Dex2oatXmx,                              $(DEX2OAT_XMX))
   $(call add_json_str,  Dex2oatXms,                              $(DEX2OAT_XMS))
   $(call add_json_str,  EmptyDirectory,                          $(OUT_DIR)/empty)
diff --git a/core/dex_preopt_odex_install.mk b/core/dex_preopt_odex_install.mk
index f9a9ba7..cbd3069 100644
--- a/core/dex_preopt_odex_install.mk
+++ b/core/dex_preopt_odex_install.mk
@@ -278,6 +278,7 @@
   $(call add_json_list, PreoptFlags,                    $(LOCAL_DEX_PREOPT_FLAGS))
   $(call add_json_str,  ProfileClassListing,            $(if $(my_process_profile),$(LOCAL_DEX_PREOPT_PROFILE)))
   $(call add_json_bool, ProfileIsTextListing,           $(my_profile_is_text_listing))
+  $(call add_json_str,  EnforceUsesLibrariesStatusFile, $(intermediates.COMMON)/enforce_uses_libraries.status)
   $(call add_json_bool, EnforceUsesLibraries,           $(LOCAL_ENFORCE_USES_LIBRARIES))
   $(call add_json_str,  ProvidesUsesLibrary,            $(firstword $(LOCAL_PROVIDES_USES_LIBRARY) $(LOCAL_MODULE)))
   $(call add_json_map,  ClassLoaderContexts)
@@ -345,6 +346,9 @@
       $(call intermediates-dir-for,JAVA_LIBRARIES,$(lib),,COMMON)/javalib.jar)
   my_dexpreopt_deps += $(my_dexpreopt_images_deps)
   my_dexpreopt_deps += $(DEXPREOPT_BOOTCLASSPATH_DEX_FILES)
+  ifeq ($(LOCAL_ENFORCE_USES_LIBRARIES),true)
+    my_dexpreopt_deps += $(intermediates.COMMON)/enforce_uses_libraries.status
+  endif
 
   $(my_dexpreopt_zip): PRIVATE_MODULE := $(LOCAL_MODULE)
   $(my_dexpreopt_zip): $(my_dexpreopt_deps)
diff --git a/core/verify_uses_libraries.sh b/core/verify_uses_libraries.sh
index dde0447..1bd0a2c 100755
--- a/core/verify_uses_libraries.sh
+++ b/core/verify_uses_libraries.sh
@@ -21,6 +21,7 @@
 
 set -e
 local_apk=$1
+status_file=$2
 badging=$(${aapt_binary} dump badging "${local_apk}")
 export sdk_version=$(echo "${badging}" | grep "sdkVersion" | sed -n "s/sdkVersion:'\(.*\)'/\1/p")
 # Export target_sdk_version to the caller.
@@ -28,20 +29,28 @@
 uses_libraries=$(echo "${badging}" | grep "uses-library" | sed -n "s/uses-library:'\(.*\)'/\1/p")
 optional_uses_libraries=$(echo "${badging}" | grep "uses-library-not-required" | sed -n "s/uses-library-not-required:'\(.*\)'/\1/p")
 
+errmsg=
+
 # Verify that the uses libraries match exactly.
 # Currently we validate the ordering of the libraries since it matters for resolution.
 single_line_libs=$(echo "${uses_libraries}" | tr '\n' ' ' | awk '{$1=$1}1')
 if [[ "${single_line_libs}" != "${uses_library_names}" ]]; then
-  echo "LOCAL_USES_LIBRARIES (${uses_library_names})" \
-       "do not match (${single_line_libs}) in manifest for ${local_apk}"
-  exit 1
+  errmsg="LOCAL_USES_LIBRARIES (${uses_library_names}) do not match (${single_line_libs}) in manifest for ${local_apk}"
 fi
 
 # Verify that the optional uses libraries match exactly.
 single_line_optional_libs=$(echo "${optional_uses_libraries}" | tr '\n' ' ' | awk '{$1=$1}1')
 if [[ "${single_line_optional_libs}" != "${optional_uses_library_names}" ]]; then
-  echo "LOCAL_OPTIONAL_USES_LIBRARIES (${optional_uses_library_names}) " \
-       "do not match (${single_line_optional_libs}) in manifest for ${local_apk}"
-  exit 1
+  errmsg="LOCAL_OPTIONAL_USES_LIBRARIES (${optional_uses_library_names}) do not match (${single_line_optional_libs}) in manifest for ${local_apk}"
 fi
 
+if [[ ! -z "${errmsg}" ]]; then
+  echo "${errmsg}" > "${status_file}"
+  if [[ "${relax_check}" != true ]]; then
+    # fail immediately
+    echo "${errmsg}"
+    exit 1
+  fi
+else
+  touch "${status_file}"
+fi
diff --git a/envsetup.sh b/envsetup.sh
index a5f6b6d..15d6fb4 100644
--- a/envsetup.sh
+++ b/envsetup.sh
@@ -27,7 +27,7 @@
 - mangrep:    Greps on all local AndroidManifest.xml files.
 - mgrep:      Greps on all local Makefiles and *.bp files.
 - owngrep:    Greps on all local OWNERS files.
-- rgrep:      Greps on all local Rust files.
+- rsgrep:     Greps on all local Rust files.
 - sepgrep:    Greps on all local sepolicy files.
 - sgrep:      Greps on all local source files.
 - godir:      Go to the directory containing a file.
@@ -1038,7 +1038,7 @@
         -exec grep --color -n "$@" {} +
 }
 
-function rgrep()
+function rsgrep()
 {
     find . -name .repo -prune -o -name .git -prune -o -name out -prune -o -type f -name "*\.rs" \
         -exec grep --color -n "$@" {} +
diff --git a/tools/releasetools/Android.bp b/tools/releasetools/Android.bp
index 81528ae..6d88249 100644
--- a/tools/releasetools/Android.bp
+++ b/tools/releasetools/Android.bp
@@ -451,6 +451,7 @@
     required: [
         "checkvintf",
         "host_init_verifier",
+        "secilc",
     ],
     target: {
         darwin: {
diff --git a/tools/releasetools/merge_target_files.py b/tools/releasetools/merge_target_files.py
index 3d9c717..16cab4f 100755
--- a/tools/releasetools/merge_target_files.py
+++ b/tools/releasetools/merge_target_files.py
@@ -93,6 +93,7 @@
 import subprocess
 import sys
 import zipfile
+from xml.etree import ElementTree
 
 import add_img_to_target_files
 import build_super_image
@@ -658,6 +659,80 @@
       os.path.join(output_target_files_dir, 'META', 'vendor_file_contexts.bin'))
 
 
+def compile_split_sepolicy(product_out, partition_map, output_policy):
+  """Uses secilc to compile a split sepolicy file.
+
+  Depends on various */etc/selinux/* and */etc/vintf/* files within partitions.
+
+  Args:
+    product_out: PRODUCT_OUT directory, containing partition directories.
+    partition_map: A map of partition name -> relative path within product_out.
+    output_policy: The name of the output policy created by secilc.
+
+  Returns:
+    A command list that can be executed to create the compiled sepolicy.
+  """
+
+  def get_file(partition, path):
+    if partition not in partition_map:
+      logger.warning('Cannot load SEPolicy files for missing partition %s',
+                     partition)
+      return None
+    return os.path.join(product_out, partition_map[partition], path)
+
+  # Load the kernel sepolicy version from the FCM. This is normally provided
+  # directly to selinux.cpp as a build flag, but is also available in this file.
+  fcm_file = get_file('system', 'etc/vintf/compatibility_matrix.device.xml')
+  if not fcm_file or not os.path.exists(fcm_file):
+    raise ExternalError('Missing required file for loading sepolicy: %s', fcm)
+  kernel_sepolicy_version = ElementTree.parse(fcm_file).getroot().find(
+      'sepolicy/kernel-sepolicy-version').text
+
+  # Load the vendor's plat sepolicy version. This is the version used for
+  # locating sepolicy mapping files.
+  vendor_plat_version_file = get_file('vendor',
+                                      'etc/selinux/plat_sepolicy_vers.txt')
+  if not vendor_plat_version_file or not os.path.exists(
+      vendor_plat_version_file):
+    raise ExternalError('Missing required sepolicy file %s',
+                        vendor_plat_version_file)
+  with open(vendor_plat_version_file) as f:
+    vendor_plat_version = f.read().strip()
+
+  # Use the same flags and arguments as selinux.cpp OpenSplitPolicy().
+  cmd = ['secilc', '-m', '-M', 'true', '-G', '-N']
+  cmd.extend(['-c', kernel_sepolicy_version])
+  cmd.extend(['-o', output_policy])
+  cmd.extend(['-f', '/dev/null'])
+
+  required_policy_files = (
+      ('system', 'etc/selinux/plat_sepolicy.cil'),
+      ('system', 'etc/selinux/mapping/%s.cil' % vendor_plat_version),
+      ('vendor', 'etc/selinux/vendor_sepolicy.cil'),
+      ('vendor', 'etc/selinux/plat_pub_versioned.cil'),
+  )
+  for policy in (map(lambda partition_and_path: get_file(*partition_and_path),
+                     required_policy_files)):
+    if not policy or not os.path.exists(policy):
+      raise ExternalError('Missing required sepolicy file %s', policy)
+    cmd.append(policy)
+
+  optional_policy_files = (
+      ('system', 'etc/selinux/mapping/%s.compat.cil' % vendor_plat_version),
+      ('system_ext', 'etc/selinux/system_ext_sepolicy.cil'),
+      ('system_ext', 'etc/selinux/mapping/%s.cil' % vendor_plat_version),
+      ('product', 'etc/selinux/product_sepolicy.cil'),
+      ('product', 'etc/selinux/mapping/%s.cil' % vendor_plat_version),
+      ('odm', 'etc/selinux/odm_sepolicy.cil'),
+  )
+  for policy in (map(lambda partition_and_path: get_file(*partition_and_path),
+                     optional_policy_files)):
+    if policy and os.path.exists(policy):
+      cmd.append(policy)
+
+  return cmd
+
+
 def process_special_cases(framework_target_files_temp_dir,
                           vendor_target_files_temp_dir,
                           output_target_files_temp_dir,
@@ -977,17 +1052,28 @@
       raise ValueError('sharedUserId APK error. See %s' %
                        shareduid_violation_modules)
 
-  # Run host_init_verifier on the combined init rc files.
+  # host_init_verifier and secilc check only the following partitions:
   filtered_partitions = {
       partition: path
       for partition, path in partition_map.items()
-      # host_init_verifier checks only the following partitions:
       if partition in ['system', 'system_ext', 'product', 'vendor', 'odm']
   }
+
+  # Run host_init_verifier on the combined init rc files.
   common.RunHostInitVerifier(
       product_out=output_target_files_temp_dir,
       partition_map=filtered_partitions)
 
+  # Check that the split sepolicy from the multiple builds can compile.
+  split_sepolicy_cmd = compile_split_sepolicy(
+      product_out=output_target_files_temp_dir,
+      partition_map=filtered_partitions,
+      output_policy=os.path.join(output_target_files_temp_dir,
+                                 'META/combined.policy'))
+  logger.info('Compiling split sepolicy: %s', ' '.join(split_sepolicy_cmd))
+  common.RunAndCheckOutput(split_sepolicy_cmd)
+  # TODO(b/178864050): Run tests on the combined.policy file.
+
   generate_images(output_target_files_temp_dir, rebuild_recovery)
 
   generate_super_empty_image(output_target_files_temp_dir, output_super_empty)
diff --git a/tools/releasetools/test_merge_target_files.py b/tools/releasetools/test_merge_target_files.py
index 7ea7f96..072bb01 100644
--- a/tools/releasetools/test_merge_target_files.py
+++ b/tools/releasetools/test_merge_target_files.py
@@ -18,12 +18,11 @@
 
 import common
 import test_utils
-from merge_target_files import (validate_config_lists,
-                                DEFAULT_FRAMEWORK_ITEM_LIST,
-                                DEFAULT_VENDOR_ITEM_LIST,
-                                DEFAULT_FRAMEWORK_MISC_INFO_KEYS, copy_items,
-                                item_list_to_partition_set,
-                                process_apex_keys_apk_certs_common)
+from merge_target_files import (
+    validate_config_lists, DEFAULT_FRAMEWORK_ITEM_LIST,
+    DEFAULT_VENDOR_ITEM_LIST, DEFAULT_FRAMEWORK_MISC_INFO_KEYS, copy_items,
+    item_list_to_partition_set, process_apex_keys_apk_certs_common,
+    compile_split_sepolicy)
 
 
 class MergeTargetFilesTest(test_utils.ReleaseToolsTestCase):
@@ -235,3 +234,43 @@
     ]
     partition_set = item_list_to_partition_set(item_list)
     self.assertEqual(set(['product', 'system', 'system_ext']), partition_set)
+
+  def test_compile_split_sepolicy(self):
+    product_out_dir = common.MakeTempDir()
+
+    def write_temp_file(path, data=''):
+      full_path = os.path.join(product_out_dir, path)
+      if not os.path.exists(os.path.dirname(full_path)):
+        os.makedirs(os.path.dirname(full_path))
+      with open(full_path, 'w') as f:
+        f.write(data)
+
+    write_temp_file(
+        'system/etc/vintf/compatibility_matrix.device.xml', """
+      <compatibility-matrix>
+        <sepolicy>
+          <kernel-sepolicy-version>30</kernel-sepolicy-version>
+        </sepolicy>
+      </compatibility-matrix>""")
+    write_temp_file('vendor/etc/selinux/plat_sepolicy_vers.txt', '30.0')
+
+    write_temp_file('system/etc/selinux/plat_sepolicy.cil')
+    write_temp_file('system/etc/selinux/mapping/30.0.cil')
+    write_temp_file('product/etc/selinux/mapping/30.0.cil')
+    write_temp_file('vendor/etc/selinux/vendor_sepolicy.cil')
+    write_temp_file('vendor/etc/selinux/plat_pub_versioned.cil')
+
+    cmd = compile_split_sepolicy(product_out_dir, {
+        'system': 'system',
+        'product': 'product',
+        'vendor': 'vendor',
+    }, os.path.join(product_out_dir, 'policy'))
+    self.assertEqual(' '.join(cmd),
+                     ('secilc -m -M true -G -N -c 30 '
+                      '-o {OTP}/policy -f /dev/null '
+                      '{OTP}/system/etc/selinux/plat_sepolicy.cil '
+                      '{OTP}/system/etc/selinux/mapping/30.0.cil '
+                      '{OTP}/vendor/etc/selinux/vendor_sepolicy.cil '
+                      '{OTP}/vendor/etc/selinux/plat_pub_versioned.cil '
+                      '{OTP}/product/etc/selinux/mapping/30.0.cil').format(
+                          OTP=product_out_dir))