ttyGS1 is not a regular file, using PIPE to open it
./socat -u PIPE:/dev/ttyGS1 – | tee /data/local/tmp/test
android_addition_defconfig
@@ -29,6 +29,8 @@
+CONFIG_USB_G_SERIAL=m
+CONFIG_USB_CDC_COMPOSITE=m
how to check if a function exist in bash script
how to check if a function exist in bash script
#!/bin/bash
aaa() {
echo "in a function"
}
if [ "$(type -t $1)" = "function" ]; then
echo "$1 is a function"
else
echo "$1 is not a function"
fi
$ ./test.sh aaa
function
aaa is not a function$ ./test.sh aab
aab is not a function
DDG issue 914
Device tree debugging
dtc --sort -I fs -O dts /sys/firmware/devicetree/base > device_tree.outtar zcf device_tree.tar.gz /sys/firmware/devicetree/base/zip file on Android device, then you pull the device_tree.tar.gz to your PC and compare it
build emulator of Android 11 from AOSP
follow this page to download source code first(it may take 2 hours depends on your network speed)
https://source.android.com/setup/build/downloading
and lunch sdk_phone_x86, “sdk_phone_x86″ is the only device I run emulator success
I fail to run emulator when lunch other device like “aosp_x86_64-eng"
Permission to install an application like Google Play did
your app must be put in /vendor/priv-app/ or /system/priv-app/ to get PRIVATE_FLAG_PRIVILEGED
and also add the permission.xml and Android.mk as below:
<?xml version="1.0" encoding="utf-8"?>
<permissions>
<privapp-permissions package="com.idtech.appmanager">
<permission name="android.permission.DELETE_PACKAGES"/>
<permission name="android.permission.INSTALL_PACKAGES"/>
</privapp-permissions>
<privapp-permissions package="com.example.android.apis">
<permission name="android.permission.INSTALL_PACKAGES"/>
</privapp-permissions>
</permissions> include $(CLEAR_VARS)
LOCAL_MODULE := permissions.xml
LOCAL_MODULE_TAGS := optional
LOCAL_MODULE_CLASS := ETC
LOCAL_MODULE_PATH := $(TARGET_OUT_PRODUCT_ETC)/permissions
LOCAL_SRC_FILES := $(LOCAL_MODULE)
LOCAL_PRODUCT_MODULE := true
include $(BUILD_PREBUILT)then your app can get permission to trigger installation without set “install from unknown source"
AOSP also has a demo app for package installation
below changes are needed for the ApiDemos to get permission of installation
+++ b/samples/ApiDemos/Android.mk
@@ -23,6 +23,8 @@ LOCAL_DEX_PREOPT := false
LOCAL_COMPATIBILITY_SUITE := device-tests
+LOCAL_MODULE_PATH := $(TARGET_OUT_PRODUCT_APPS_PRIVILEGED)
+
include $(BUILD_PACKAGE)
# Use the folloing include to make our test apk.
diff --git a/samples/ApiDemos/AndroidManifest.xml b/samples/ApiDemos/AndroidManifest.xml
index 2d2d785dda..811c3204f4 100644
--- a/samples/ApiDemos/AndroidManifest.xml
+++ b/samples/ApiDemos/AndroidManifest.xml
@@ -41,6 +41,7 @@
<uses-permission android:name="android.permission.WAKE_LOCK"/>
<uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES"/>
+ <uses-permission android:name="android.permission.INSTALL_PACKAGES"/>
then you can install an app just like google play does
I also create a tiny example of silent install
https://github.com/wenchiching/silentinstall
you can clone and build app from above git, then follow above description install the app to /system/priv-app/ or /vendor/priv-app
scrapy interactive shell example
scrapy shell ‘https://source.android.com/security/bulletin/2020-11-01’
>>> response.xpath(‘//table’)
Fastboot HAL module implemetation
I was trying to have “fastboot format userdata" work in user space fastboot
but some how I “adb reboot fastboot" and device go to user space fastboot but always fail to perform “fastboot format userdata"
looking into the source, there are 2 things need to be done
- Fastboot HAL add to PRODUCT_PACKAGES
- implement the Fastboot HAL module
https://android-review.googlesource.com/c/device/google/muskie/+/1473229 add android.hardware.fastboot@1.0-impl-mock
https://android-review.googlesource.com/c/platform/hardware/libhardware/+/1473557 Add fastboot.h for Fastboot OEM HAL
https://android-review.googlesource.com/c/platform/hardware/interfaces/+/1473621 implement Fastboot OEM HAL of getPartitionType
https://android-review.googlesource.com/c/platform/build/+/1473622 add owenwen to vendor module list
and I create vendor/owenwen/fastboot for my fastboot module
Android.bp
cc_library_shared {
name: "fastboot.default",
//recovery_available: true, // not work, this setting won't install the module into recovery image
recovery: true,
relative_install_path: "hw",
include_dirs: [
"hardware/libhardware/include",
],
srcs: ["Fastboot.cpp"],
owner: "owenwen",
}
Fastboot.cpp
#include <hardware/hardware.h>
#include <hardware/fastboot.h>
#include <cstring>
#define USERDATA "userdata"
static struct hw_module_methods_t fastboot_module_methods = {
.open = NULL,
};
/* refer hardware/interfaces/fastboot/1.0/types.hal for the return value of this function
* 0: EXT4
* 1: F2FS
* 2: RAW
*/
static int module_getPartitionType(fastboot_module_t* /*module*/, const char* partitionName) {
if (std::strncmp(partitionName, USERDATA, std::strlen(USERDATA)) == 0) {
return 0;
} else {
return 2;
}
}
fastboot_module_t HAL_MODULE_INFO_SYM = {
.common = {
.tag = HARDWARE_MODULE_TAG,
.version_major = 1,
.version_minor = 0,
.id = FASTBOOT_MODULE_ID,
.name = "Fastboot HAL Module",
.author = "Owen Wen",
.methods = &fastboot_module_methods,
},
.getPartitionType = module_getPartitionType,
};
How to remove notify in Android O, customize AOSP
There is no config to turn on/off the notification, so can only customize the AOSP source code
private boolean isBlocked(NotificationRecord r) {
final String pkg = r.sbn.getPackageName();
final int callingUid = r.sbn.getUid();
return mPreferencesHelper.isGroupBlocked(pkg, callingUid, r.getChannel().getGroup())
|| mPreferencesHelper.getImportance(pkg, callingUid)
== NotificationManager.IMPORTANCE_NONE
|| r.getImportance() == NotificationManager.IMPORTANCE_NONE;
}How to change Android PiP default location programmatically
refer to below commit, this setting help to change the default location of PIP window
please refer to https://cs.android.com/android/platform/superproject/+/master:frameworks/base/core/java/android/view/Gravity.java;l=45 to find out the value you need
e.g. Gravity.TOP | Gravity.RIGHT is 0x35
commit 06868c37df46c0c973a96a0a25b1f301384db4be
Author: Winson <winsonc@google.com>
Date: Wed Oct 12 21:08:18 2016 -0700
Changing initial PIP bounds specifications.
- Change from a absolute bounds to a size, gravity and inset to
allow easier tweaking of initial pinned stack bounds.
Test: android.server.cts.ActivityManagerPinnedStackTests
Test: #testPinnedStackDefaultBounds
Test: #testPinnedStackMovementBounds
Change-Id: I82a102bbd2d83259c6c84915071d1a16728e3aa7
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index c40436a5bda..30dcfb081d8 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -2482,8 +2482,17 @@
-->
<integer name="config_navBarOpacityMode">0</integer>
- <!-- Default bounds [left top right bottom] on screen for picture-in-picture windows. -->
- <string translatable="false" name="config_defaultPictureInPictureBounds">"0 0 100 100"</string>
+ <!-- Default insets [LEFT/RIGHTxTOP/BOTTOM] from the screen edge for picture-in-picture windows.
+ These values are in DPs and will be converted to pixel sizes internally. -->
+ <string translatable="false" name="config_defaultPictureInPictureScreenEdgeInsets">10x10</string>
+
+ <!-- Max default size [WIDTHxHEIGHT] on screen for picture-in-picture windows to fit inside.
+ These values are in DPs and will be converted to pixel sizes internally. -->
+ <string translatable="false" name="config_defaultPictureInPictureSize">216x135</string>
+
+ <!-- The default gravity for the picture-in-picture window.
+ Currently, this maps to Gravity.BOTTOM | Gravity.RIGHT -->
+ <integer name="config_defaultPictureInPictureGravity">0x55</integer>
Better life with Ubuntu 