|author||David Drysdale <firstname.lastname@example.org>||Fri Jan 27 15:56:18 2023 +0000|
|committer||David Drysdale <email@example.com>||Fri Jan 27 15:58:33 2023 +0000|
KeyMint: use same epoch as Gatekeeper The timestamps produced by KeyMint need to be monotonically increasing, but they also need to use the same origin/epoch as the timestamps produced by other components in the secure world, especially Gatekeeper. Gatekeeper emits timestamps since boot via `clock_gettime(CLOCK_BOOTTIME)`, so do exactly the same via the `libc` crate. Test: atest CtsIdentityTestCases:android.security.identity.cts.UserAuthTest Bug: 266879029 Change-Id: Iff8689f3fbf274ba51abb7ed7fd0332422d68bf6
Make sure virtualization with KVM is available.
grep -c -w "vmx\|svm" /proc/cpuinfo
This should return a non-zero value. If running on a cloud machine, this may take cloud-vendor-specific steps to enable. For Google Compute Engine specifically, see the GCE guide.
ARM specific steps:
/dev/kvm. Note that this method can also be used to confirm support of KVM on any environment.
Download, build, and install the host debian packages:
sudo apt install -y git devscripts config-package-dev debhelper-compat golang curl git clone https://github.com/google/android-cuttlefish cd android-cuttlefish for dir in base frontend; do cd $dir debuild -i -us -uc -b -d cd .. done sudo dpkg -i ./cuttlefish-base_*_*64.deb || sudo apt-get install -f sudo dpkg -i ./cuttlefish-user_*_*64.deb || sudo apt-get install -f sudo usermod -aG kvm,cvdnetwork,render $USER sudo reboot
The reboot will trigger installing additional kernel modules and applying udev rules.
Go to http://ci.android.com/
Enter a branch name. Start with
aosp-master if you don‘t know what you’re looking for
aosp_cf_x86_64_phone and click on
userdebug for the latest build
aosp-master-throttled-coppedand device target
Scroll down to the OTA images. These packages look like
aosp_cf_x86_64_phone-img-xxxxxx.zip -- it will always have
img in the name. Download this file
Scroll down to
cvd-host_package.tar.gz. You should always download a host package from the same build as your images.
On your local system, combine the packages:
mkdir cf cd cf tar xvf /path/to/cvd-host_package.tar.gz unzip /path/to/aosp_cf_x86_64_phone-img-xxxxxx.zip
Launch cuttlefish with:
$ HOME=$PWD ./bin/launch_cvd
You can use
adb to debug it, just like a physical device:
$ ./bin/adb -e shell
When launching with
---start_webrtc (the default), you can see a list of all available devices at
https://localhost:8443 . For more information, see the WebRTC on Cuttlefish documentation.
You will need to stop the virtual device within the same directory as you used to launch the device.
$ HOME=$PWD ./bin/stop_cvd