Download oracle java 6 : http://www.oracle.com/technetwork/java/javase/downloads/java-archive-downloads-javase6-419409.html
chose : Linux x64 68.75 MB "jdk-6u45-linux-x64.bin"
# sudo chmode 777 jdk-6u45-linux-x64.bin
# ./jdk-6u45-linux-x64.bin
# export JAVA_HOME=/home/bin/jdk1.6.0_45 (change to your java path)
# export JRE_HOME=${JAVA_HOME}/jre
# export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
# export PATH=${JAVA_HOME}/bin:${JRE_HOME}/bin:$PATH
Modify : build/core/main.mk
+ifeq (0,$(shell expr $$(echo $(MAKE_VERSION) | sed "s/[^0-9\.].*//") = 4.1))
$(warning ********************************************************************************)
$(warning * You are using version $(MAKE_VERSION) of make.)
$(warning * Android can only be built by versions 3.81 and 3.82.)
$(warning * see https://source.android.com/source/download.html)
$(warning ********************************************************************************)
$(error stopping)
+endif
2017年6月1日 星期四
[Android] Generate the test key pairs
About key
A. 簽名類型
android的標準簽名key有：
testkey, media, platform, shared
以上的四種，可以在源碼的/build/target/product/security/裡面看到對應的金鑰，其中shared.pk8代表私密金鑰，shared.x509.pem公開金鑰，一定是"成對"出現的。
其中testkey是作為android編譯的時候默認的簽名key，如果系統中的apk的android.mk中沒有設置LOCAL_CERTIFICATE的值，就默認使用testkey。
而如果設置成：
LOCAL_CERTIFICATE := platform
就代表使用platform來簽名，這樣的話這個apk就擁有了和system相同的簽名，因為系統級別的簽名也是使用的platform來簽名，此時使用android:sharedUserId="android.uid.system"才有用！
最後我們需要將testkey置換成releasekey。
B. 製作Release key
subject='/C=US/ST=California/L=Mountain View/O=Android/OU=Android/CN=Android/emailAddress=android@android.com'
mkdir ~/.android-certs
for x in releasekey platform shared media; do \
./development/tools/make_key ~/.android-certs/$x "$subject"; \
done
C ---> Country Name (2 letter code)
ST ---> State or Province Name (full name)
L ---> Locality Name (eg, city)
O ---> Organization Name (eg, company)
OU ---> Organizational Unit Name (eg, section)
CN ---> Common Name (eg, your name or your server’s hostname)
emailAddress ---> Contact email address
另外在使用上面的make_key腳本生成key的過程中會提示輸入password，直接enter，不要密碼！否則build的過程因為多執行緒會build失敗。(後面會介紹強制使用密碼方法)
將生成的key複製到/build/target/product/security/ 底下，testkey可以不留。
僅需一個人產生即可，其他人複製同一份security key使用，避免使用不同簽章而在燒錄過程驗證不過。
C. 修改系統默認簽名key
若LOCAL_CERTIFICATE沒有設定的話，系統預設會直接使用testkey為APK簽章。
修改預設使用的testkey為releasekey
android4.4/build/core/config.mk
修正前：
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/testkey
修正後：
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/releasekey
/build/core/makefile
修正前：
ifeq ($(DEFAULT_SYSTEM_DEV_CERTIFICATE),build/target/product/security/testkey)
BUILD_VERSION_TAGS += test-keys
修正後：
ifeq ($(DEFAULT_SYSTEM_DEV_CERTIFICATE),build/target/product/security/releasekey)
BUILD_VERSION_TAGS += release-keys
===================================================================
如果你在產生key的過程有輸入password
build/tools/signapk/SignApk.java 在這隻檔案
private static String readPassword(File keyFile) {
Console console;
char[] pwd;
if((console = System.console()) != null &&
(pwd = console.readPassword("[%s]", "Enter password for " + keyFile)) != null){
return String.valueOf(pwd);
} else {
//return null;
+ return String.valueOf(password);<<加入這段 強制回傳你設置的密碼
}
}
這樣就可以解決build失敗的狀況
-----------------------------------------------------------------------------------------------------------------
build/core/config.mk
ifdef PRODUCT_DEFAULT_DEV_CERTIFICATE
DEFAULT_SYSTEM_DEV_CERTIFICATE := $(PRODUCT_DEFAULT_DEV_CERTIFICATE)
else
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/testkey
endif
-----------------------------------------------------------------------------------------------------------------
in your project.mk
PRODUCT_DEFAULT_DEV_CERTIFICATE := \
device/xxx/testkey
===================================================================
How do I change the KEY path and the RSA for DM-verity?
===================================================================
development/tools/make_key verity '/C=US/ST=California/L=Mountain View/O=Android/OU=Android/CN=Android/emailAddress=android@android.com'
out/host/linux-x86/bin/generate_verity_key -convert verity.x509.pem verity_key
mv verity_key.pub verity_key
-----------------------------------------------------------------------------------------------------------------
copy build/target/product/verity.mk to project_path/
ifdef PRODUCT_VERITY_SIGNING_KEY
PRODUCT_VERITY_SIGNING_KEY := $(PRODUCT_VERITY_SIGNING_KEY)
else
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/verity
endif
-----------------------------------------------------------------------------------------------------------------
in your project.mk
PRODUCT_VERITY_SIGNING_KEY := \
device/xxx/verity
DISTTOOLS += \
$(HOST_OUT_EXECUTABLES)/generate_verity_key
# setup dm-verity configs.
ifneq ($(BUILD_TARGET_DEVICE),sd)
PRODUCT_SYSTEM_VERITY_PARTITION := /dev/block/mmcblkxxx
$(call inherit-product, project_path/verity.mk)
else
PRODUCT_SYSTEM_VERITY_PARTITION := /dev/block/mmcblkxxx
$(call inherit-product, project_path/verity.mk)
endif
-----------------------------------------------------------------------------------------------------------------
key都建立完成後 應該要有
testkey.pk8 testkey.pem
media.pk8 media.pem
platform.pk8 platform.pem
shared.pk8 shared.pem
verity.pk8 verity.pem.
verity_key
共九個檔案
A. 簽名類型
android的標準簽名key有：
testkey, media, platform, shared
以上的四種，可以在源碼的/build/target/product/security/裡面看到對應的金鑰，其中shared.pk8代表私密金鑰，shared.x509.pem公開金鑰，一定是"成對"出現的。
其中testkey是作為android編譯的時候默認的簽名key，如果系統中的apk的android.mk中沒有設置LOCAL_CERTIFICATE的值，就默認使用testkey。
而如果設置成：
LOCAL_CERTIFICATE := platform
就代表使用platform來簽名，這樣的話這個apk就擁有了和system相同的簽名，因為系統級別的簽名也是使用的platform來簽名，此時使用android:sharedUserId="android.uid.system"才有用！
最後我們需要將testkey置換成releasekey。
B. 製作Release key
subject='/C=US/ST=California/L=Mountain View/O=Android/OU=Android/CN=Android/emailAddress=android@android.com'
mkdir ~/.android-certs
for x in releasekey platform shared media; do \
./development/tools/make_key ~/.android-certs/$x "$subject"; \
done
C ---> Country Name (2 letter code)
ST ---> State or Province Name (full name)
L ---> Locality Name (eg, city)
O ---> Organization Name (eg, company)
OU ---> Organizational Unit Name (eg, section)
CN ---> Common Name (eg, your name or your server’s hostname)
emailAddress ---> Contact email address
另外在使用上面的make_key腳本生成key的過程中會提示輸入password，直接enter，不要密碼！否則build的過程因為多執行緒會build失敗。(後面會介紹強制使用密碼方法)
將生成的key複製到/build/target/product/security/ 底下，testkey可以不留。
僅需一個人產生即可，其他人複製同一份security key使用，避免使用不同簽章而在燒錄過程驗證不過。
C. 修改系統默認簽名key
若LOCAL_CERTIFICATE沒有設定的話，系統預設會直接使用testkey為APK簽章。
修改預設使用的testkey為releasekey
android4.4/build/core/config.mk
修正前：
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/testkey
修正後：
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/releasekey
/build/core/makefile
修正前：
ifeq ($(DEFAULT_SYSTEM_DEV_CERTIFICATE),build/target/product/security/testkey)
BUILD_VERSION_TAGS += test-keys
修正後：
ifeq ($(DEFAULT_SYSTEM_DEV_CERTIFICATE),build/target/product/security/releasekey)
BUILD_VERSION_TAGS += release-keys
===================================================================
如果你在產生key的過程有輸入password
build/tools/signapk/SignApk.java 在這隻檔案
private static String readPassword(File keyFile) {
Console console;
char[] pwd;
if((console = System.console()) != null &&
(pwd = console.readPassword("[%s]", "Enter password for " + keyFile)) != null){
return String.valueOf(pwd);
} else {
//return null;
+ return String.valueOf(password);<<加入這段 強制回傳你設置的密碼
}
}
這樣就可以解決build失敗的狀況
-----------------------------------------------------------------------------------------------------------------
build/core/config.mk
ifdef PRODUCT_DEFAULT_DEV_CERTIFICATE
DEFAULT_SYSTEM_DEV_CERTIFICATE := $(PRODUCT_DEFAULT_DEV_CERTIFICATE)
else
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/testkey
endif
-----------------------------------------------------------------------------------------------------------------
in your project.mk
PRODUCT_DEFAULT_DEV_CERTIFICATE := \
device/xxx/testkey
===================================================================
How do I change the KEY path and the RSA for DM-verity?
===================================================================
development/tools/make_key verity '/C=US/ST=California/L=Mountain View/O=Android/OU=Android/CN=Android/emailAddress=android@android.com'
out/host/linux-x86/bin/generate_verity_key -convert verity.x509.pem verity_key
mv verity_key.pub verity_key
-----------------------------------------------------------------------------------------------------------------
copy build/target/product/verity.mk to project_path/
ifdef PRODUCT_VERITY_SIGNING_KEY
PRODUCT_VERITY_SIGNING_KEY := $(PRODUCT_VERITY_SIGNING_KEY)
else
DEFAULT_SYSTEM_DEV_CERTIFICATE := build/target/product/security/verity
endif
-----------------------------------------------------------------------------------------------------------------
in your project.mk
PRODUCT_VERITY_SIGNING_KEY := \
device/xxx/verity
DISTTOOLS += \
$(HOST_OUT_EXECUTABLES)/generate_verity_key
# setup dm-verity configs.
ifneq ($(BUILD_TARGET_DEVICE),sd)
PRODUCT_SYSTEM_VERITY_PARTITION := /dev/block/mmcblkxxx
$(call inherit-product, project_path/verity.mk)
else
PRODUCT_SYSTEM_VERITY_PARTITION := /dev/block/mmcblkxxx
$(call inherit-product, project_path/verity.mk)
endif
-----------------------------------------------------------------------------------------------------------------
key都建立完成後 應該要有
testkey.pk8 testkey.pem
media.pk8 media.pem
platform.pk8 platform.pem
shared.pk8 shared.pem
verity.pk8 verity.pem.
verity_key
共九個檔案
[Android] Debug
看cpu頻率相關資訊:
/sys/devices/system/cpu/
in android 6:
logcat -b kernel
Screencasting/Mirroring an Android Device Screen onto your Desktop under Ubuntu/Linux Mint
http://www.upubuntu.com/2015/09/screencastingmirroring-android-device.html
/sys/devices/system/cpu/
in android 6:
logcat -b kernel
Screencasting/Mirroring an Android Device Screen onto your Desktop under Ubuntu/Linux Mint
http://www.upubuntu.com/2015/09/screencastingmirroring-android-device.html
[Android] Android
===========================================================
init
system/core/init
readme.txt
keywords.h -init command
===========================================================
Android 6:
查詢相對應的Key_code
frameworks/base/data/keyboards/Generic.kl
處理Key_Event
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
158 /* KEY_BACK */
172 /* KEY_HOMEPAGE */
580 /* APP_SWITCH */
/frameworks/base/core/res/res/values/config.xml
===========================================================
Disable the software navigation bar
<bool name="config_showNavigationBar">false</bool>
Check the device init.rc don't "setprop sys.device.type tablet"
If deivetpye is tablet, the mHasNavigationBar will be true.
// Allow a system property to override this. Used by the emulator.
// See also hasNavigationBar().
String navBarOverride = SystemProperties.get("qemu.hw.mainkeys");
if ("1".equals(navBarOverride)) {
mHasNavigationBar = false;
} else if ("0".equals(navBarOverride)) {
mHasNavigationBar = true;
}
//if device type is tablet force enable NavigationBar and forbid NavigationBar move
String deviceType = SystemProperties.get("sys.device.type");
if (! "".equals(deviceType) && deviceType.equals("tablet")) {
mNavigationBarCanMove = false;
mHasNavigationBar = true;
}
===========================================================
Screen flip
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
if (mForceDefaultOrientation) {
return Surface.ROTATION_0;
}
+ return Surface.ROTATION_180;
synchronized (mLock) {
===========================================================
init
system/core/init
readme.txt
keywords.h -init command
===========================================================
Android 6:
查詢相對應的Key_code
frameworks/base/data/keyboards/Generic.kl
處理Key_Event
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
158 /* KEY_BACK */
172 /* KEY_HOMEPAGE */
580 /* APP_SWITCH */
/frameworks/base/core/res/res/values/config.xml
===========================================================
Disable the software navigation bar
<bool name="config_showNavigationBar">false</bool>
Check the device init.rc don't "setprop sys.device.type tablet"
If deivetpye is tablet, the mHasNavigationBar will be true.
// Allow a system property to override this. Used by the emulator.
// See also hasNavigationBar().
String navBarOverride = SystemProperties.get("qemu.hw.mainkeys");
if ("1".equals(navBarOverride)) {
mHasNavigationBar = false;
} else if ("0".equals(navBarOverride)) {
mHasNavigationBar = true;
}
//if device type is tablet force enable NavigationBar and forbid NavigationBar move
String deviceType = SystemProperties.get("sys.device.type");
if (! "".equals(deviceType) && deviceType.equals("tablet")) {
mNavigationBarCanMove = false;
mHasNavigationBar = true;
}
===========================================================
Screen flip
frameworks/base/services/core/java/com/android/server/policy/PhoneWindowManager.java
if (mForceDefaultOrientation) {
return Surface.ROTATION_0;
}
+ return Surface.ROTATION_180;
synchronized (mLock) {
===========================================================
[Android] screencap
screencap 可以從 command line 擷取螢幕畫面。screencap [-p] [<FILENAME>]
提供 FILENAME 時表示要把畫面直接寫到手機的記憶卡，否則會輸出到 STDOUT。
加
加
-p 或 FILENAME 以 .png 結尾時，畫面會輸出成 PNG 格式（預設採用 frame buffer 的原始格式）。例如：$ adb shell screencap -p /sdcard/screen.png
$ adb pull /sdcard/screen.png
$ adb shell rm /sdcard/screen.png
利用
screencap 沒有給定 FILENAME 時會將畫面輸出到 STDOUT 的特性，可以將上面多個步驟合併成一行指令：$ adb shell screencap -p | sed 's/\r$//' > screen.png
後面用
sed 多做一層加工，是因為 adb shell 會將 \n 轉成 \r\n 的關係，必須將 \r\n (0x0d0a) 反轉回 \r (0x0a) 才行。實務上，再用 alias 包裝起來會比較方便：$ alias and-screencap="adb shell screencap -p | sed 's/\r$//'"
$ and-screencap > screen.png # 
之後就可以用
and-screencap > <FILENAME> 直接將畫面存成電腦上的檔案 FILENAME，不需要在手機記憶卡產生暫存檔。完整的用法
$ screencap -h
usage: screencap [-hp] [FILENAME]
-h: this message
-p: save the file as a png.
If FILENAME ends with .png it will be saved as a png.
If FILENAME is not given, the results will be printed to stdout.
[Android] [Recovery]
===========================================================
Recovery klog
===========================================================
If you find : denied { write } for pid=183 comm="recovery" name="kmsg"
Moditfy : myandroid/external/sepolicy/recovery.te
Add : allow recovery kmsg_device:chr_file rw_file_perms;
----------------------------------------------------------------------------------------------------
recovery.cpp
#define RECOVERY_KLOG_LEVEL KLOG_INFO_LEVEL
in main to add :
klog_init();
klog_set_level(RECOVERY_KLOG_LEVEL
common.h
#include <cutils/klog.h>
#define LOGE(...) KLOG_INFO("<recovery>E", __VA_ARGS__); fprintf(stdout, "E:" __VA_ARGS__)
#define LOGW(...) KLOG_WARNING("<recovery>W", __VA_ARGS__); fprintf(stdout, "W:" __VA_ARGS__)
#define LOGI(...) KLOG_INFO("<recovery>I", __VA_ARGS__); fprintf(stdout, "I:" __VA_ARGS__)
#define LOGV(...) KLOG_INFO("<recovery>V", __VA_ARGS__); fprintf(stdout, "V:" __VA_ARGS__)
#define LOGD(...) KLOG_INFO("<recovery>D", __VA_ARGS__); fprintf(stdout, "D:" __VA_ARGS__)
screen_ui.cpp
in ScreenRecoveryUI::Print to add :
KLOG_INFO("<recovery>UI", "%s", buf);
===========================================================
Make /tmp/recovery.log & /tmp/last_install accessible
===========================================================
If you find : denied { open } for pid=194 comm="adbd" path="/tmp/recovery.log" dev="tmpfs"
adb pull /tmp/recovery.log
message : failed to copy '/tmp/recovery.log' to './recovery.log': Permission denied
adb pull /tmp/last_install
message : failed to copy '/tmp/last_install' to './last_install': Permission denied
Moditfy : external/sepolicy/adbd.te
Add : allow adbd tmpfs:file { open };
----------------------------------------------------------------------------------------------------
recovery.cpp
in main to add :
+chmod(TEMPORARY_LOG_FILE, 0644);
install.cpp
in main :
if (install_log) {
fputs(path, install_log);
fputc('\n', install_log);
+chmod(install_file, 0644);
}
===========================================================
Support recovery shell console
===========================================================
mksh/reboot/toubox Android.mk
LOCAL_STATIC_LIBRARIES += libc
LOCAL_FORCE_STATIC_EXECUTABLE := true
----------------------------------------------------------------------------------------------------
build/core/Makefile
recovery_ash_binary := $(call intermediates-dir-for,EXECUTABLES,ash)/ash
recovery_reboot_binary := $(call intermediates-dir-for,EXECUTABLES,rreboot)/rreboot
recovery_toybox_binary := $(call intermediates-dir-for,EXECUTABLES,rtoybox)/rtoybox
recovery_toybox_tools := \
youtools(ex. cat) \
recovery_toybox_symlinks := $(addprefix $(TARGET_RECOVERY_ROOT_OUT)/sbin/,$(recovery_toybox_tools))
define build-recoveryimage-target
@echo ----- Making recovery image ------
$(hide) rm -rf $(TARGET_RECOVERY_ROOT_OUT)/res/*
$(hide) cp -f $(recovery_ash_binary) $(TARGET_RECOVERY_ROOT_OUT)/sbin/
$(hide) cp -f $(recovery_reboot_binary) $(TARGET_RECOVERY_ROOT_OUT)/sbin/reboot
$(hide) cp -f $(recovery_toybox_binary) $(TARGET_RECOVERY_ROOT_OUT)/sbin/
$(hide) $(foreach t,$(recovery_toybox_symlinks),ln -sf rtoybox $(t);)
$(INSTALLED_RECOVERYIMAGE_TARGET): $(MKBOOTFS) $(MKBOOTIMG) $(MINIGZIP) \
$(INTERNAL_RECOVERYIMAGE_FILES) \
$(recovery_ash_binary) $(recovery_reboot_binary) $(recovery_toybox_binary) \
----------------------------------------------------------------------------------------------------
recovery/etc/init.rc
service console /sbin/ash
class core
console
user root
group root
seclabel u:r:recovery:s0
on property:ro.debuggable=1
start console
on property:service.adb.root=1
start console
===========================================================
===========================================================
----------------------------------------------------------------------------------------------------
===========================================================
===========================================================
----------------------------------------------------------------------------------------------------
Recovery klog
===========================================================
If you find : denied { write } for pid=183 comm="recovery" name="kmsg"
Moditfy : myandroid/external/sepolicy/recovery.te
Add : allow recovery kmsg_device:chr_file rw_file_perms;
----------------------------------------------------------------------------------------------------
recovery.cpp
#define RECOVERY_KLOG_LEVEL KLOG_INFO_LEVEL
in main to add :
klog_init();
klog_set_level(RECOVERY_KLOG_LEVEL
common.h
#include <cutils/klog.h>
#define LOGE(...) KLOG_INFO("<recovery>E", __VA_ARGS__); fprintf(stdout, "E:" __VA_ARGS__)
#define LOGW(...) KLOG_WARNING("<recovery>W", __VA_ARGS__); fprintf(stdout, "W:" __VA_ARGS__)
#define LOGI(...) KLOG_INFO("<recovery>I", __VA_ARGS__); fprintf(stdout, "I:" __VA_ARGS__)
#define LOGV(...) KLOG_INFO("<recovery>V", __VA_ARGS__); fprintf(stdout, "V:" __VA_ARGS__)
#define LOGD(...) KLOG_INFO("<recovery>D", __VA_ARGS__); fprintf(stdout, "D:" __VA_ARGS__)
screen_ui.cpp
in ScreenRecoveryUI::Print to add :
KLOG_INFO("<recovery>UI", "%s", buf);
===========================================================
Make /tmp/recovery.log & /tmp/last_install accessible
===========================================================
If you find : denied { open } for pid=194 comm="adbd" path="/tmp/recovery.log" dev="tmpfs"
adb pull /tmp/recovery.log
message : failed to copy '/tmp/recovery.log' to './recovery.log': Permission denied
adb pull /tmp/last_install
message : failed to copy '/tmp/last_install' to './last_install': Permission denied
Moditfy : external/sepolicy/adbd.te
Add : allow adbd tmpfs:file { open };
----------------------------------------------------------------------------------------------------
recovery.cpp
in main to add :
+chmod(TEMPORARY_LOG_FILE, 0644);
install.cpp
in main :
if (install_log) {
fputs(path, install_log);
fputc('\n', install_log);
+chmod(install_file, 0644);
}
===========================================================
Support recovery shell console
===========================================================
mksh/reboot/toubox Android.mk
LOCAL_STATIC_LIBRARIES += libc
LOCAL_FORCE_STATIC_EXECUTABLE := true
----------------------------------------------------------------------------------------------------
build/core/Makefile
recovery_ash_binary := $(call intermediates-dir-for,EXECUTABLES,ash)/ash
recovery_reboot_binary := $(call intermediates-dir-for,EXECUTABLES,rreboot)/rreboot
recovery_toybox_binary := $(call intermediates-dir-for,EXECUTABLES,rtoybox)/rtoybox
recovery_toybox_tools := \
youtools(ex. cat) \
recovery_toybox_symlinks := $(addprefix $(TARGET_RECOVERY_ROOT_OUT)/sbin/,$(recovery_toybox_tools))
define build-recoveryimage-target
@echo ----- Making recovery image ------
$(hide) rm -rf $(TARGET_RECOVERY_ROOT_OUT)/res/*
$(hide) cp -f $(recovery_ash_binary) $(TARGET_RECOVERY_ROOT_OUT)/sbin/
$(hide) cp -f $(recovery_reboot_binary) $(TARGET_RECOVERY_ROOT_OUT)/sbin/reboot
$(hide) cp -f $(recovery_toybox_binary) $(TARGET_RECOVERY_ROOT_OUT)/sbin/
$(hide) $(foreach t,$(recovery_toybox_symlinks),ln -sf rtoybox $(t);)
$(INSTALLED_RECOVERYIMAGE_TARGET): $(MKBOOTFS) $(MKBOOTIMG) $(MINIGZIP) \
$(INTERNAL_RECOVERYIMAGE_FILES) \
$(recovery_ash_binary) $(recovery_reboot_binary) $(recovery_toybox_binary) \
----------------------------------------------------------------------------------------------------
recovery/etc/init.rc
service console /sbin/ash
class core
console
user root
group root
seclabel u:r:recovery:s0
on property:ro.debuggable=1
start console
on property:service.adb.root=1
start console
===========================================================
===========================================================
----------------------------------------------------------------------------------------------------
===========================================================
===========================================================
----------------------------------------------------------------------------------------------------
[Android] sepolicy
/external/sepolicy/file_contexts
add :
/system/bin/abc u:object_r:abc_exec:s0
you can add
/external/sepolicy/abc.te
in abc.te
type abc, domain;
type abc_exec, exec_type, file_type;
init_daemon_domain(abc);
add :
/system/bin/abc u:object_r:abc_exec:s0
you can add
/external/sepolicy/abc.te
in abc.te
type abc, domain;
type abc_exec, exec_type, file_type;
init_daemon_domain(abc);
[Android] Android編譯系統參考手冊
build/core/binary.mk
定義了將asm，c，cpp，yacc，lex源代碼編譯為目標文件的基本規則
模塊想生成某類型目標時不會直接包含該makefile，但如果生成二進製程序，會間接包含該makefile
dynamic_binary.mk， executable.mk，host_executable.mk，host_shared_library.mk
host_static_library.mk，prebuilt.mk，raw_executable.mk，shared_library.mk，static_library.mk
等makefile都會包含binary.mk
所有的目標文件將添加到$(all_objects)變量裡
模塊想生成某類型目標時不會直接包含該makefile，但如果生成二進製程序，會間接包含該makefile
dynamic_binary.mk， executable.mk，host_executable.mk，host_shared_library.mk
host_static_library.mk，prebuilt.mk，raw_executable.mk，shared_library.mk，static_library.mk
等makefile都會包含binary.mk
所有的目標文件將添加到$(all_objects)變量裡
Function: insert-liblog
使得包含了libcutils或者libutils的模塊，也包含liblog，並使得liblog排在前面
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