X-Git-Url: https://glassweightruler.freedombox.rocks/gitweb/waydroid.git/blobdiff_plain/0b73886b71273abd753184c88081127ca96c6c83..d1ba241d92dca786644e52d5de08a77b4e721bf3:/tools/helpers/lxc.py diff --git a/tools/helpers/lxc.py b/tools/helpers/lxc.py index d774936..1c51e0d 100644 --- a/tools/helpers/lxc.py +++ b/tools/helpers/lxc.py @@ -6,12 +6,12 @@ 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"] @@ -20,30 +20,33 @@ def get_lxc_version(args): 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): - 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 + return add_node_entry(nodes, src, dist, mnt_type, options, check) - nodes = [] # 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", check=False) + make_entry("/dev/ashmem") make_entry("/dev/fuse") make_entry("/dev/ion") + make_entry("/dev/tty") make_entry("/dev/char", options="bind,create=dir,optional 0 0") # Graphic dev nodes @@ -52,7 +55,9 @@ def generate_nodes_lxc_config(args): make_entry("/dev/pvr_sync") make_entry("/dev/pmsg0") make_entry("/dev/dxg") - make_entry(tools.helpers.gpu.getDriNode(args), "dev/dri/renderD128") + 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) @@ -81,17 +86,10 @@ def generate_nodes_lxc_config(args): # Low memory killer sys node make_entry("/sys/module/lowmemorykiller", options="bind,create=dir,optional 0 0") - # Mount /data - make_entry("tmpfs", "mnt", "tmpfs", "mode=0755,uid=0,gid=1000", False) - make_entry(tools.config.defaults["data"], "data", options="bind 0 0", check=False) - # Mount host permissions make_entry(tools.config.defaults["host_perms"], "vendor/etc/host-permissions", options="bind,optional 0 0") - # Recursive mount /run to provide necessary host sockets - make_entry("/run", options="rbind,create=dir 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") @@ -113,20 +111,29 @@ def generate_nodes_lxc_config(args): make_entry("/mnt/wslg", "mnt_extra/wslg", options="rbind,create=dir,optional 0 0") - # var - make_entry("tmpfs", "var", "tmpfs", "nodev 0 0", False) - make_entry("/var/run", options="rbind,create=dir,optional 0 0") - - # tmp + # Make a tmpfs at every possible rootfs mountpoint make_entry("tmpfs", "tmp", "tmpfs", "nodev 0 0", False) - for n in glob.glob("/tmp/run-*"): - make_entry(n, options="rbind,create=dir,optional 0 0") + 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" @@ -135,15 +142,13 @@ def set_lxc_config(args): 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" - apparmor_profiles = [tools.config.tools_src + "/data/configs/" + "lxc-waydroid",tools.config.tools_src + "/data/configs/" + "android_app",tools.config.tools_src + "/data/configs/" + "adbd"] - apparmor_profile_dir = "/etc/apparmor.d/" config_snippets = [ config_paths + "base" ] - # lxc v1 is a bit special because some options got renamed later - if lxc_ver == 1: + # 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(2, 5): + for ver in range(3, 5): snippet = config_paths + str(ver) if lxc_ver >= ver and os.path.exists(snippet): config_snippets.append(snippet) @@ -156,22 +161,9 @@ def set_lxc_config(args): tools.helpers.run.user(args, command) command = ["cp", "-fpr", seccomp_profile, lxc_path + "/waydroid.seccomp"] tools.helpers.run.user(args, command) - - try: - command = ["cp", "-i", apparmor_profiles[0], apparmor_profile_dir + "lxc/lxc-waydroid"] - tools.helpers.run.user(args, command) - command = ["apparmor_parser", "-r", apparmor_profile_dir + "lxc/lxc-waydroid"] - tools.helpers.run.user(args, command) - command = ["cp", "-i", apparmor_profiles[1], apparmor_profile_dir + "android_app"] - tools.helpers.run.user(args, command) - command = ["apparmor_parser", "-r", apparmor_profile_dir + "android_app"] - tools.helpers.run.user(args, command) - command = ["cp", "-i", apparmor_profiles[2], apparmor_profile_dir + "adbd"] + 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) - command = ["apparmor_parser", "-r", apparmor_profile_dir + "adbd"] - tools.helpers.run.user(args, command) - except: - logging.warning("An error has occurred while installing AppArmor profiles. If profiles are not installed, or AppArmor is disabled or not supported on your system, then the container will run without AppArmor protection.") nodes = generate_nodes_lxc_config(args) config_nodes_tmp_path = args.work + "/config_nodes" @@ -182,6 +174,43 @@ def set_lxc_config(args): 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): @@ -216,7 +245,7 @@ def make_base_props(args): props.append("sys.use_memfd=true") egl = tools.helpers.props.host_get(args, "ro.hardware.egl") - dri = tools.helpers.gpu.getDriNode(args) + dri, _ = tools.helpers.gpu.getDriNode(args) gralloc = find_hal("gralloc") if not gralloc: @@ -343,14 +372,31 @@ def setup_host_perms(args): def status(args): command = ["lxc-info", "-P", tools.config.defaults["lxc"], "-n", "waydroid", "-sH"] - out = subprocess.run(command, stdout=subprocess.PIPE).stdout.decode('utf-8').strip() - os.chmod(args.log, 0o666) - return out + 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", @@ -366,22 +412,68 @@ def unfreeze(args): 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): - if status(args) != "RUNNING": - logging.error("WayDroid container is {}".format(status(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", "--"] + "-n", "waydroid", "--clear-env"] + command.extend(android_env_attach_options()) + if args.uid!=None: + command.append("--uid="+str(args.uid)) + if args.gid!=None: + command.append("--gid="+str(args.gid)) + elif args.uid!=None: + command.append("--gid="+str(args.uid)) + if args.nolsm or args.allcaps or args.nocgroup: + elevatedprivs = "--elevated-privileges=" + addpipe = False + if args.nolsm: + if addpipe: + elevatedprivs+="|" + elevatedprivs+="LSM" + addpipe = True + if args.allcaps: + if addpipe: + elevatedprivs+="|" + elevatedprivs+="CAP" + addpipe = True + if args.nocgroup: + if addpipe: + elevatedprivs+="|" + elevatedprivs+="CGROUP" + addpipe = True + command.append(elevatedprivs) + if args.context!=None and not args.nolsm: + command.append("--context="+args.context) + command.append("--") if args.COMMAND: - command.append(args.COMMAND) + command.extend(args.COMMAND) else: command.append("/system/bin/sh") - subprocess.run(command, env={"PATH": os.environ['PATH'] + ":/system/bin:/vendor/bin"}) + subprocess.run(command) + if state == "FROZEN": + freeze(args) def logcat(args): - if status(args) != "RUNNING": - logging.error("WayDroid container is {}".format(status(args))) - return - command = ["lxc-attach", "-P", tools.config.defaults["lxc"], - "-n", "waydroid", "--", "/system/bin/logcat"] - subprocess.run(command) + args.COMMAND = ["/system/bin/logcat"] + shell(args)