platform_system_core/init/Android.mk
Josh Gao 3e76ecaf80 crash_dump: during early boot, output to kmsg on userdebug.
Crashes that happen before tombstoned is running are extremely hard to
diagnose, because tombstones aren't written to disk, and the window of
opportunity to get logs via `adb logcat` is small (potentially
nonexistent).

Solve this by adding a world-writable /dev/kmsg_debug on userdebug
builds, and writing to it in addition to logcat when tombstoned hasn't
started yet.

Bug: http://b/36574794
Test: stop tombstoned; crasher; dmesg
Change-Id: I46ba2dd67c188be74bd931f8a5536b6342d537f2
2017-08-11 13:29:38 -07:00

100 lines
2 KiB
Makefile

# Copyright 2005 The Android Open Source Project
LOCAL_PATH:= $(call my-dir)
# --
ifneq (,$(filter userdebug eng,$(TARGET_BUILD_VARIANT)))
init_options += \
-DALLOW_LOCAL_PROP_OVERRIDE=1 \
-DALLOW_PERMISSIVE_SELINUX=1 \
-DREBOOT_BOOTLOADER_ON_PANIC=1 \
-DWORLD_WRITABLE_KMSG=1 \
-DDUMP_ON_UMOUNT_FAILURE=1
else
init_options += \
-DALLOW_LOCAL_PROP_OVERRIDE=0 \
-DALLOW_PERMISSIVE_SELINUX=0 \
-DREBOOT_BOOTLOADER_ON_PANIC=0 \
-DWORLD_WRITABLE_KMSG=0 \
-DDUMP_ON_UMOUNT_FAILURE=0
endif
ifneq (,$(filter eng,$(TARGET_BUILD_VARIANT)))
init_options += \
-DSHUTDOWN_ZERO_TIMEOUT=1
else
init_options += \
-DSHUTDOWN_ZERO_TIMEOUT=0
endif
init_options += -DLOG_UEVENTS=0
ifeq ($(TARGET_USER_MODE_LINUX), true)
init_cflags += -DUSER_MODE_LINUX
endif
init_cflags += \
$(init_options) \
-Wall -Wextra \
-Wno-unused-parameter \
-Werror \
-std=gnu++1z \
# --
include $(CLEAR_VARS)
LOCAL_CPPFLAGS := $(init_cflags)
LOCAL_SRC_FILES:= \
bootchart.cpp \
builtins.cpp \
init.cpp \
init_first_stage.cpp \
keychords.cpp \
reboot.cpp \
signal_handler.cpp \
ueventd.cpp \
watchdogd.cpp \
LOCAL_MODULE:= init
LOCAL_FORCE_STATIC_EXECUTABLE := true
LOCAL_MODULE_PATH := $(TARGET_ROOT_OUT)
LOCAL_UNSTRIPPED_PATH := $(TARGET_ROOT_OUT_UNSTRIPPED)
LOCAL_STATIC_LIBRARIES := \
libinit \
libbootloader_message \
libfs_mgr \
libfec \
libfec_rs \
libsquashfs_utils \
liblogwrap \
libext4_utils \
libcutils \
libbase \
libc \
libseccomp_policy \
libselinux \
liblog \
libcrypto_utils \
libcrypto \
libc++_static \
libdl \
libsparse \
libz \
libprocessgroup \
libavb \
libkeyutils \
LOCAL_REQUIRED_MODULES := \
e2fsdroid \
mke2fs \
# Create symlinks.
LOCAL_POST_INSTALL_CMD := $(hide) mkdir -p $(TARGET_ROOT_OUT)/sbin; \
ln -sf ../init $(TARGET_ROOT_OUT)/sbin/ueventd; \
ln -sf ../init $(TARGET_ROOT_OUT)/sbin/watchdogd
LOCAL_SANITIZE := signed-integer-overflow
include $(BUILD_EXECUTABLE)