b38dea0597
Share Gaia assets and adapters, keep private profiles and development documents local, and update both public READMEs.
96 lines
4 KiB
Python
96 lines
4 KiB
Python
#!/usr/bin/python3
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"""Guest PID 1. Start the graphical session and retain serial diagnostics."""
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import json
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import os
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from pathlib import Path
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import signal
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import subprocess
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import time
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import traceback
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if os.getpid() != 1:
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raise SystemExit('This init runs only as PID 1 inside the VM.')
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os.environ.update(PATH='/usr/bin', HOME='/root', LANG='C.UTF-8', LD_LIBRARY_PATH='/usr/lib/weston:/usr/lib')
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children = []
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def run(*args):
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subprocess.run(args, check=True)
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def start(*args, env=None):
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p = subprocess.Popen(args, env=env)
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children.append(p)
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return p
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def shutdown(*unused):
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print('TUNDRA_SHUTDOWN', flush=True)
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for p in reversed(children):
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if p.poll() is None: p.terminate()
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time.sleep(2)
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os.sync()
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# Kernel poweroff; this process cannot run on the host due to the PID1 guard.
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import ctypes
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ctypes.CDLL(None).reboot(0x4321FEDC)
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signal.signal(signal.SIGTERM, shutdown)
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try:
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Path('/dev/shm').mkdir(exist_ok=True)
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run('mount','-t','tmpfs','tmpfs','/dev/shm')
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Path('/dev/pts').mkdir(exist_ok=True)
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run('mount','-t','devpts','devpts','/dev/pts')
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for path in ('/run/user/1000','/home/vulpes','/var/log/tundra'):
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Path(path).mkdir(parents=True, exist_ok=True)
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os.chown(path,1000,1000)
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os.chmod('/run/user/1000',0o700)
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# Staged files belong to the builder; the guest grants only product state to its user.
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for base, dirs, files in os.walk('/opt/vulpes'):
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os.chown(base,1000,1000)
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for name in files: os.chown(Path(base)/name,1000,1000)
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run('ip','link','set','lo','up')
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start('/usr/lib/systemd/systemd-udevd','--resolve-names=never')
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# Coldplug must wait for the daemon's control socket, otherwise its initial
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# events can be lost and libinput sees neither keyboard nor pointer.
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for _ in range(100):
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ping = subprocess.run(['udevadm','control','--timeout=1','--ping'],
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stdout=subprocess.DEVNULL,stderr=subprocess.DEVNULL)
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if ping.returncode == 0: break
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time.sleep(.1)
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else: raise RuntimeError('udevd did not become ready')
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run('udevadm','trigger','--action=add')
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run('udevadm','settle','--timeout=10')
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inputs = []
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for device in Path('/dev/input').glob('event*'):
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info = subprocess.check_output(['udevadm','info','--query=property',str(device)],text=True)
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inputs.append(info)
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if not any('ID_INPUT_MOUSE=1' in item for item in inputs):
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raise RuntimeError('Virtual pointer missing from udev: '+repr(inputs))
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if not any('ID_INPUT_KEYBOARD=1' in item for item in inputs):
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raise RuntimeError('Virtual keyboard missing from udev: '+repr(inputs))
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print('TUNDRA_INPUT_READY',flush=True)
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if 'tundra.usb=1' in Path('/proc/cmdline').read_text():
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run('python3','-u','/opt/tundra/usb-test.py')
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env = dict(os.environ, SEATD_VTBOUND='0')
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start('seatd','-g','video',env=env)
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for _ in range(50):
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if Path('/run/seatd.sock').exists(): break
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time.sleep(.1)
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env.update(HOME='/home/vulpes',USER='vulpes',LOGNAME='vulpes',
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XDG_RUNTIME_DIR='/run/user/1000',LIBSEAT_BACKEND='seatd',
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WAYLAND_DISPLAY='wayland-0',MOZ_ENABLE_WAYLAND='1',GDK_BACKEND='wayland',
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XDG_SESSION_TYPE='wayland',LIBGL_ALWAYS_SOFTWARE='1')
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print('TUNDRA_GRAPHICAL_START', flush=True)
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user = ['setpriv','--reuid=1000','--regid=1000','--groups=44,992']
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session = start(*user,'dbus-run-session','--','python3','-u','/opt/tundra/session.py',env=env)
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while session.poll() is None: time.sleep(1)
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print('TUNDRA_SESSION_EXIT',session.returncode,flush=True)
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except Exception:
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traceback.print_exc()
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print('TUNDRA_BOOT_FAILED',flush=True)
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finally:
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for name in ('weston.log','gecko.log','server.log','test.json','usb.log','usb-test.json'):
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p = Path('/var/log/tundra')/name
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if p.exists():
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print('TUNDRA_LOG_BEGIN', name, flush=True)
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print(p.read_text(errors='replace')[-18000:],flush=True)
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print('TUNDRA_LOG_END', name, flush=True)
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shutdown()
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while True: time.sleep(1)
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