/
lxc.py
452 lines (384 loc) · 17.5 KB
/
lxc.py
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# Copyright 2021 Erfan Abdi
# SPDX-License-Identifier: GPL-3.0-or-later
import subprocess
import os
import re
import logging
import glob
import shutil
import time
import platform
import gbinder
import tools.config
import tools.helpers.run
def get_lxc_version(args):
if shutil.which("lxc-info") is not None:
command = ["lxc-info", "--version"]
version_str = tools.helpers.run.user(args, command, output_return=True)
return int(version_str[0])
else:
return 0
def add_node_entry(nodes, src, dist, mnt_type, options, check):
if check and not os.path.exists(src):
return False
entry = "lxc.mount.entry = "
entry += src + " "
if dist is None:
dist = src[1:]
entry += dist + " "
entry += mnt_type + " "
entry += options
nodes.append(entry)
return True
def generate_nodes_lxc_config(args):
nodes = []
def make_entry(src, dist=None, mnt_type="none", options="bind,create=file,optional 0 0", check=True):
return add_node_entry(nodes, src, dist, mnt_type, options, check)
# Necessary dev nodes
make_entry("tmpfs", "dev", "tmpfs", "nosuid 0 0", False)
make_entry("/dev/zero")
make_entry("/dev/null")
make_entry("/dev/full")
make_entry("/dev/ashmem")
make_entry("/dev/fuse")
make_entry("/dev/ion")
make_entry("/dev/char", options="bind,create=dir,optional 0 0")
# Graphic dev nodes
make_entry("/dev/kgsl-3d0")
make_entry("/dev/mali0")
make_entry("/dev/pvr_sync")
make_entry("/dev/pmsg0")
make_entry("/dev/dxg")
render, card = tools.helpers.gpu.getDriNode(args)
make_entry(render, "dev/dri/renderD128")
make_entry(card, "dev/dri/card0")
for n in glob.glob("/dev/fb*"):
make_entry(n)
for n in glob.glob("/dev/graphics/fb*"):
make_entry(n)
for n in glob.glob("/dev/video*"):
make_entry(n)
# Binder dev nodes
make_entry("/dev/" + args.BINDER_DRIVER, "dev/binder", check=False)
make_entry("/dev/" + args.VNDBINDER_DRIVER, "dev/vndbinder", check=False)
make_entry("/dev/" + args.HWBINDER_DRIVER, "dev/hwbinder", check=False)
if args.vendor_type != "MAINLINE":
if not make_entry("/dev/hwbinder", "dev/host_hwbinder"):
raise OSError('Binder node "hwbinder" of host not found')
make_entry("/vendor", "vendor_extra", options="bind,optional 0 0")
# Necessary device nodes for adb
make_entry("none", "dev/pts", "devpts", "defaults,mode=644,ptmxmode=666,create=dir 0 0", False)
make_entry("/dev/uhid")
# TUN/TAP device node for VPN
make_entry("/dev/net/tun", "dev/tun")
# Low memory killer sys node
make_entry("/sys/module/lowmemorykiller", options="bind,create=dir,optional 0 0")
# Mount host permissions
make_entry(tools.config.defaults["host_perms"],
"vendor/etc/host-permissions", options="bind,optional 0 0")
# Necessary sw_sync node for HWC
make_entry("/dev/sw_sync")
make_entry("/sys/kernel/debug", options="rbind,create=dir,optional 0 0")
# Vibrator
make_entry("/sys/class/leds/vibrator",
options="bind,create=dir,optional 0 0")
make_entry("/sys/devices/virtual/timed_output/vibrator",
options="bind,create=dir,optional 0 0")
# Media dev nodes (for Mediatek)
make_entry("/dev/Vcodec")
make_entry("/dev/MTK_SMI")
make_entry("/dev/mdp_sync")
make_entry("/dev/mtk_cmdq")
# WSLg
make_entry("tmpfs", "mnt_extra", "tmpfs", "nodev 0 0", False)
make_entry("/mnt/wslg", "mnt_extra/wslg",
options="rbind,create=dir,optional 0 0")
# Make a tmpfs at every possible rootfs mountpoint
make_entry("tmpfs", "tmp", "tmpfs", "nodev 0 0", False)
make_entry("tmpfs", "var", "tmpfs", "nodev 0 0", False)
make_entry("tmpfs", "run", "tmpfs", "nodev 0 0", False)
# NFC config
make_entry("/system/etc/libnfc-nci.conf", options="bind,optional 0 0")
return nodes
LXC_APPARMOR_PROFILE = "lxc-waydroid"
def get_apparmor_status(args):
enabled = False
if shutil.which("aa-enabled"):
enabled = (tools.helpers.run.user(args, ["aa-enabled", "--quiet"], check=False) == 0)
if not enabled and shutil.which("systemctl"):
enabled = (tools.helpers.run.user(args, ["systemctl", "is-active", "-q", "apparmor"], check=False) == 0)
try:
with open("/sys/kernel/security/apparmor/profiles", "r") as f:
enabled &= (LXC_APPARMOR_PROFILE in f.read())
except:
enabled = False
return enabled
def set_lxc_config(args):
lxc_path = tools.config.defaults["lxc"] + "/waydroid"
lxc_ver = get_lxc_version(args)
if lxc_ver == 0:
raise OSError("LXC is not installed")
config_paths = tools.config.tools_src + "/data/configs/config_"
seccomp_profile = tools.config.tools_src + "/data/configs/waydroid.seccomp"
config_snippets = [ config_paths + "base" ]
# lxc v1 and v2 are bit special because some options got renamed later
if lxc_ver <= 2:
config_snippets.append(config_paths + "1")
else:
for ver in range(3, 5):
snippet = config_paths + str(ver)
if lxc_ver >= ver and os.path.exists(snippet):
config_snippets.append(snippet)
command = ["mkdir", "-p", lxc_path]
tools.helpers.run.user(args, command)
command = ["sh", "-c", "cat {} > \"{}\"".format(' '.join('"{0}"'.format(w) for w in config_snippets), lxc_path + "/config")]
tools.helpers.run.user(args, command)
command = ["sed", "-i", "s/LXCARCH/{}/".format(platform.machine()), lxc_path + "/config"]
tools.helpers.run.user(args, command)
command = ["cp", "-fpr", seccomp_profile, lxc_path + "/waydroid.seccomp"]
tools.helpers.run.user(args, command)
if get_apparmor_status(args):
command = ["sed", "-i", "-E", "/lxc.aa_profile|lxc.apparmor.profile/ s/unconfined/{}/g".format(LXC_APPARMOR_PROFILE), lxc_path + "/config"]
tools.helpers.run.user(args, command)
nodes = generate_nodes_lxc_config(args)
config_nodes_tmp_path = args.work + "/config_nodes"
config_nodes = open(config_nodes_tmp_path, "w")
for node in nodes:
config_nodes.write(node + "\n")
config_nodes.close()
command = ["mv", config_nodes_tmp_path, lxc_path]
tools.helpers.run.user(args, command)
# Create empty file
open(os.path.join(lxc_path, "config_session"), mode="w").close()
def generate_session_lxc_config(args, session):
nodes = []
def make_entry(src, dist=None, mnt_type="none", options="rbind,create=file 0 0"):
if any(x in src for x in ["\n", "\r"]):
logging.warning("User-provided mount path contains illegal character: " + src)
return False
if dist is None and (not os.path.exists(src) or
str(os.stat(src).st_uid) != session["user_id"]):
logging.warning("User-provided mount path is not owned by user: " + src)
return False
return add_node_entry(nodes, src, dist, mnt_type, options, check=False)
# Make sure XDG_RUNTIME_DIR exists
if not make_entry("tmpfs", session["xdg_runtime_dir"], options="create=dir 0 0"):
raise OSError("Failed to create XDG_RUNTIME_DIR mount point")
wayland_socket = os.path.realpath(os.path.join(session["xdg_runtime_dir"], session["wayland_display"]))
if not make_entry(wayland_socket):
raise OSError("Failed to bind Wayland socket")
pulse_socket = os.path.join(session["pulse_runtime_path"], "native")
make_entry(pulse_socket)
if not make_entry(session["waydroid_data"], "data", options="rbind 0 0"):
raise OSError("Failed to bind userdata")
lxc_path = tools.config.defaults["lxc"] + "/waydroid"
config_nodes_tmp_path = args.work + "/config_session"
config_nodes = open(config_nodes_tmp_path, "w")
for node in nodes:
config_nodes.write(node + "\n")
config_nodes.close()
command = ["mv", config_nodes_tmp_path, lxc_path]
tools.helpers.run.user(args, command)
def make_base_props(args):
def find_hal(hardware):
hardware_props = [
"ro.hardware." + hardware,
"ro.hardware",
"ro.product.board",
"ro.arch",
"ro.board.platform"]
for p in hardware_props:
prop = tools.helpers.props.host_get(args, p)
if prop != "":
for lib in ["/odm/lib", "/odm/lib64", "/vendor/lib", "/vendor/lib64", "/system/lib", "/system/lib64"]:
hal_file = lib + "/hw/" + hardware + "." + prop + ".so"
if os.path.isfile(hal_file):
return prop
return ""
def find_hidl(intf):
if args.vendor_type == "MAINLINE":
return False
try:
sm = gbinder.ServiceManager("/dev/hwbinder")
return intf in sm.list_sync()
except:
return False
props = []
if not os.path.exists("/dev/ashmem"):
props.append("sys.use_memfd=true")
egl = tools.helpers.props.host_get(args, "ro.hardware.egl")
dri, _ = tools.helpers.gpu.getDriNode(args)
gralloc = find_hal("gralloc")
if not gralloc:
if find_hidl("android.hardware.graphics.allocator@4.0::IAllocator/default"):
gralloc = "android"
if not gralloc:
if dri:
gralloc = "gbm"
egl = "mesa"
else:
gralloc = "default"
egl = "swiftshader"
props.append("debug.stagefright.ccodec=0")
props.append("ro.hardware.gralloc=" + gralloc)
if egl != "":
props.append("ro.hardware.egl=" + egl)
media_profiles = tools.helpers.props.host_get(args, "media.settings.xml")
if media_profiles != "":
media_profiles = media_profiles.replace("vendor/", "vendor_extra/")
media_profiles = media_profiles.replace("odm/", "odm_extra/")
props.append("media.settings.xml=" + media_profiles)
ccodec = tools.helpers.props.host_get(args, "debug.stagefright.ccodec")
if ccodec != "":
props.append("debug.stagefright.ccodec=" + ccodec)
ext_library = tools.helpers.props.host_get(args, "ro.vendor.extension_library")
if ext_library != "":
ext_library = ext_library.replace("vendor/", "vendor_extra/")
ext_library = ext_library.replace("odm/", "odm_extra/")
props.append("ro.vendor.extension_library=" + ext_library)
vulkan = find_hal("vulkan")
if not vulkan and dri:
vulkan = tools.helpers.gpu.getVulkanDriver(args, os.path.basename(dri))
if vulkan:
props.append("ro.hardware.vulkan=" + vulkan)
treble = tools.helpers.props.host_get(args, "ro.treble.enabled")
if treble != "true":
camera = find_hal("camera")
if camera != "":
props.append("ro.hardware.camera=" + camera)
else:
if args.vendor_type == "MAINLINE":
props.append("ro.hardware.camera=v4l2")
opengles = tools.helpers.props.host_get(args, "ro.opengles.version")
if opengles == "":
opengles = "196609"
props.append("ro.opengles.version=" + opengles)
if args.images_path not in tools.config.defaults["preinstalled_images_paths"]:
props.append("waydroid.system_ota=" + args.system_ota)
props.append("waydroid.vendor_ota=" + args.vendor_ota)
else:
props.append("waydroid.updater.disabled=true")
props.append("waydroid.tools_version=" + tools.config.version)
if args.vendor_type == "MAINLINE":
props.append("ro.vndk.lite=true")
for product in ["brand", "device", "manufacturer", "model", "name"]:
prop_product = tools.helpers.props.host_get(
args, "ro.product.vendor." + product)
if prop_product != "":
props.append("ro.product.waydroid." + product + "=" + prop_product)
else:
if os.path.isfile("/proc/device-tree/" + product):
with open("/proc/device-tree/" + product) as f:
f_value = f.read().strip().rstrip('\x00')
if f_value != "":
props.append("ro.product.waydroid." +
product + "=" + f_value)
prop_fp = tools.helpers.props.host_get(args, "ro.vendor.build.fingerprint")
if prop_fp != "":
props.append("ro.build.fingerprint=" + prop_fp)
# now append/override with values in [properties] section of waydroid.cfg
cfg = tools.config.load(args)
for k, v in cfg["properties"].items():
for idx, elem in enumerate(props):
if (k+"=") in elem:
props.pop(idx)
props.append(k+"="+v)
base_props = open(args.work + "/waydroid_base.prop", "w")
for prop in props:
base_props.write(prop + "\n")
base_props.close()
def setup_host_perms(args):
if not os.path.exists(tools.config.defaults["host_perms"]):
os.mkdir(tools.config.defaults["host_perms"])
treble = tools.helpers.props.host_get(args, "ro.treble.enabled")
if treble != "true":
return
sku = tools.helpers.props.host_get(args, "ro.boot.product.hardware.sku")
copy_list = []
copy_list.extend(
glob.glob("/vendor/etc/permissions/android.hardware.nfc.*"))
if os.path.exists("/vendor/etc/permissions/android.hardware.consumerir.xml"):
copy_list.append("/vendor/etc/permissions/android.hardware.consumerir.xml")
copy_list.extend(
glob.glob("/odm/etc/permissions/android.hardware.nfc.*"))
if os.path.exists("/odm/etc/permissions/android.hardware.consumerir.xml"):
copy_list.append("/odm/etc/permissions/android.hardware.consumerir.xml")
if sku != "":
copy_list.extend(
glob.glob("/odm/etc/permissions/sku_{}/android.hardware.nfc.*".format(sku)))
if os.path.exists("/odm/etc/permissions/sku_{}/android.hardware.consumerir.xml".format(sku)):
copy_list.append(
"/odm/etc/permissions/sku_{}/android.hardware.consumerir.xml".format(sku))
for filename in copy_list:
shutil.copy(filename, tools.config.defaults["host_perms"])
def status(args):
command = ["lxc-info", "-P", tools.config.defaults["lxc"], "-n", "waydroid", "-sH"]
try:
return tools.helpers.run.user(args, command, output_return=True).strip()
except:
logging.info("Couldn't get LXC status. Assuming STOPPED.")
return "STOPPED"
def wait_for_running(args):
lxc_status = status(args)
timeout = 10
while lxc_status != "RUNNING" and timeout > 0:
lxc_status = status(args)
logging.info(
"waiting {} seconds for container to start...".format(timeout))
timeout = timeout - 1
time.sleep(1)
if lxc_status != "RUNNING":
raise OSError("container failed to start")
def start(args):
command = ["lxc-start", "-P", tools.config.defaults["lxc"],
"-F", "-n", "waydroid", "--", "/init"]
tools.helpers.run.user(args, command, output="background")
wait_for_running(args)
# Workaround lxc-start changing stdout/stderr permissions to 700
os.chmod(args.log, 0o666)
def stop(args):
command = ["lxc-stop", "-P",
tools.config.defaults["lxc"], "-n", "waydroid", "-k"]
tools.helpers.run.user(args, command)
def freeze(args):
command = ["lxc-freeze", "-P", tools.config.defaults["lxc"], "-n", "waydroid"]
tools.helpers.run.user(args, command)
def unfreeze(args):
command = ["lxc-unfreeze", "-P",
tools.config.defaults["lxc"], "-n", "waydroid"]
tools.helpers.run.user(args, command)
ANDROID_ENV = {
"PATH": "/product/bin:/apex/com.android.runtime/bin:/apex/com.android.art/bin:/system_ext/bin:/system/bin:/system/xbin:/odm/bin:/vendor/bin:/vendor/xbin",
"ANDROID_ROOT": "/system",
"ANDROID_DATA": "/data",
"ANDROID_STORAGE": "/storage",
"ANDROID_ART_ROOT": "/apex/com.android.art",
"ANDROID_I18N_ROOT": "/apex/com.android.i18n",
"ANDROID_TZDATA_ROOT": "/apex/com.android.tzdata",
"ANDROID_RUNTIME_ROOT": "/apex/com.android.runtime",
"BOOTCLASSPATH": "/apex/com.android.art/javalib/core-oj.jar:/apex/com.android.art/javalib/core-libart.jar:/apex/com.android.art/javalib/core-icu4j.jar:/apex/com.android.art/javalib/okhttp.jar:/apex/com.android.art/javalib/bouncycastle.jar:/apex/com.android.art/javalib/apache-xml.jar:/system/framework/framework.jar:/system/framework/ext.jar:/system/framework/telephony-common.jar:/system/framework/voip-common.jar:/system/framework/ims-common.jar:/system/framework/framework-atb-backward-compatibility.jar:/apex/com.android.conscrypt/javalib/conscrypt.jar:/apex/com.android.media/javalib/updatable-media.jar:/apex/com.android.mediaprovider/javalib/framework-mediaprovider.jar:/apex/com.android.os.statsd/javalib/framework-statsd.jar:/apex/com.android.permission/javalib/framework-permission.jar:/apex/com.android.sdkext/javalib/framework-sdkextensions.jar:/apex/com.android.wifi/javalib/framework-wifi.jar:/apex/com.android.tethering/javalib/framework-tethering.jar"
}
def android_env_attach_options():
env = [k + "=" + v for k, v in ANDROID_ENV.items()]
return [x for var in env for x in ("--set-var", var)]
def shell(args):
state = status(args)
if state == "FROZEN":
unfreeze(args)
elif state != "RUNNING":
logging.error("WayDroid container is {}".format(state))
return
command = ["lxc-attach", "-P", tools.config.defaults["lxc"],
"-n", "waydroid", "--clear-env"]
command.extend(android_env_attach_options())
command.append("--")
if args.COMMAND:
command.extend(args.COMMAND)
else:
command.append("/system/bin/sh")
subprocess.run(command)
if state == "FROZEN":
freeze(args)
def logcat(args):
args.COMMAND = ["/system/bin/logcat"]
shell(args)