Can I reboot OS from my snap package?

[milko.uzunov]

My Python application uses os. system(‘reboot’). I connected the shutdown and power-control plugs. I received [Python Controller ERROR]: sh: 1: reboot: Permission denied.

Time: May 10 08:10:30
Log: apparmor="DENIED" operation="exec" profile="snap.aps.daemon" name="/usr/bin/systemctl" pid=5442 comm="sh" requested_mask="x" denied_mask="x" fsuid=0 ouid=0
File: /usr/bin/systemctl (exec)
Suggestions:
* adjust snap to ship 'systemctl'
* adjust program to use relative paths if the snap already ships 'systemctl'

[ogra]

The shutdown interface gives you access to dbus to issue a shutdown or reboot command through a dbus call… there are plenty of posts here in the forum with example commands…

[milko.uzunov]

I searched before writing but not found a thing which is work for me.

[ogra]

See

Strict Confined Snap System Reboot? How To w/Python

since this recently comes up more often here, i quickly threw together a snap: name: reboot-test base: core20 version: '0.1' # just for humans, typically '1.2+git' or '1.3.2' summary: Single-line elevator pitch for your amazing snap # 79 char long summary description: | This is my-snap's description. You have a paragraph or two to tell the most important story about your snap. Keep it under 100 words though, we live in tweetspace and your description wants to look good in the snap store…

[milko.uzunov]

First tried

stage-packages:
  - python3-dbus

and I received the error ModuleNotFoundError: No module named ‘dbus’

Then tried to install dbus-python but I received the error No package 'dbus-1' found I added

build-packages:
 - build-essential 
 - libdbus-glib-1-dev
 - libgirepository1.0-dev
 - libdbus-1-dev

And now I’m trying to fix this

[32/32] Linking target test/test-import-repeatedly
      FAILED: test/test-import-repeatedly
      cc  -o test/test-import-repeatedly test/test-import-repeatedly.p/import-repeatedly.c.o -L/root/parts/python/install/lib -L/root/parts/python/install/usr/lib -L/root/parts/python/install/lib/aarch64-linux-gnu -L/root/parts/python/install/usr/lib/aarch64-linux-gnu -L/root/stage/usr/lib -L/root/stage/usr/lib/aarch64-linux-gnu -Wl,--as-needed -Wl,--no-undefined -Wl,-O1 -isystem/root/parts/python/install/usr/include -isystem/root/parts/python/install/usr/include/aarch64-linux-gnu -Wl,--start-group -lpython3.11 -Wl,--end-group
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `init_condattr':
      /root/parts/python/build/Python/thread_pthread.h:147: undefined reference to `pthread_condattr_setclock'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_tss_create':
      /root/parts/python/build/Python/thread_pthread.h:893: undefined reference to `pthread_key_create'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_start_new_thread':
      /root/parts/python/build/Python/thread_pthread.h:289: undefined reference to `pthread_create'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:306: undefined reference to `pthread_detach'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:270: undefined reference to `pthread_attr_setstacksize'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_tss_delete':
      /root/parts/python/build/Python/thread_pthread.h:910: undefined reference to `pthread_key_delete'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_allocate_lock':
      /root/parts/python/build/Python/thread_pthread.h:388: undefined reference to `sem_init'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:388: undefined reference to `sem_init'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_acquire_lock_timed':
      /root/parts/python/build/Python/thread_pthread.h:497: undefined reference to `sem_wait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:497: undefined reference to `sem_wait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:494: undefined reference to `sem_trywait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:483: undefined reference to `sem_clockwait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:497: undefined reference to `sem_wait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:483: undefined reference to `sem_clockwait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:494: undefined reference to `sem_trywait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:497: undefined reference to `sem_wait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:494: undefined reference to `sem_trywait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:483: undefined reference to `sem_clockwait'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_release_lock':
      /root/parts/python/build/Python/thread_pthread.h:563: undefined reference to `sem_post'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_tss_get':
      /root/parts/python/build/Python/thread_pthread.h:927: undefined reference to `pthread_getspecific'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_tss_set':
      /root/parts/python/build/Python/thread_pthread.h:919: undefined reference to `pthread_setspecific'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_free_lock':
      /root/parts/python/build/Python/thread_pthread.h:413: undefined reference to `sem_destroy'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_create_key':
      /root/parts/python/build/Python/thread_pthread.h:820: undefined reference to `pthread_key_create'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Python/thread_pthread.h:825: undefined reference to `pthread_key_delete'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_delete_key':
      /root/parts/python/build/Python/thread_pthread.h:839: undefined reference to `pthread_key_delete'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_delete_key_value':
      /root/parts/python/build/Python/thread_pthread.h:847: undefined reference to `pthread_setspecific'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_set_key_value':
      /root/parts/python/build/Python/thread_pthread.h:855: undefined reference to `pthread_setspecific'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_get_key_value':
      /root/parts/python/build/Python/thread_pthread.h:866: undefined reference to `pthread_getspecific'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `_pythread_pthread_set_stacksize':
      /root/parts/python/build/Python/thread_pthread.h:783: undefined reference to `pthread_attr_setstacksize'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(thread.o): in function `PyThread_tss_delete':
      /root/parts/python/build/Python/thread_pthread.h:910: undefined reference to `pthread_key_delete'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(faulthandler.o): in function `faulthandler_thread':
      /root/parts/python/build/./Modules/faulthandler.c:609: undefined reference to `pthread_sigmask'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(signalmodule.o): in function `signal_pthread_kill_impl':
      /root/parts/python/build/./Modules/signalmodule.c:1326: undefined reference to `pthread_kill'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(signalmodule.o): in function `signal_pthread_sigmask_impl':
      /root/parts/python/build/./Modules/signalmodule.c:1014: undefined reference to `pthread_sigmask'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(complexobject.o): in function `_Py_c_abs':
      /root/parts/python/build/Objects/complexobject.c:208: undefined reference to `hypot'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(complexobject.o): in function `_Py_c_pow':
      /root/parts/python/build/Objects/complexobject.c:144: undefined reference to `hypot'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/complexobject.c:145: undefined reference to `pow'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/complexobject.c:146: undefined reference to `atan2'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/complexobject.c:149: undefined reference to `exp'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/complexobject.c:150: undefined reference to `log'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/complexobject.c:150: undefined reference to `sincos'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(floatobject.o): in function `float_rem':
      /root/parts/python/build/Objects/floatobject.c:655: undefined reference to `fmod'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(floatobject.o): in function `_float_div_mod':
      /root/parts/python/build/Objects/floatobject.c:675: undefined reference to `fmod'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(floatobject.o): in function `float_pow':
      /root/parts/python/build/Objects/floatobject.c:847: undefined reference to `pow'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/floatobject.c:824: undefined reference to `fmod'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/floatobject.c:847: undefined reference to `pow'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/floatobject.c:788: undefined reference to `fmod'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/floatobject.c:798: undefined reference to `fmod'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(longobject.o): in function `PyLong_FromString':
      /root/parts/python/build/Objects/longobject.c:2441: undefined reference to `log'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/Objects/longobject.c:2441: undefined reference to `log'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(posixmodule.o): in function `os_login_tty_impl':
      /root/parts/python/build/./Modules/posixmodule.c:7425: undefined reference to `login_tty'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(posixmodule.o): in function `os_openpty_impl':
      /root/parts/python/build/./Modules/posixmodule.c:7328: undefined reference to `openpty'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(posixmodule.o): in function `os_forkpty_impl':
      /root/parts/python/build/./Modules/posixmodule.c:7479: undefined reference to `forkpty'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(timemodule.o): in function `time_pthread_getcpuclockid':
      /root/parts/python/build/./Modules/timemodule.c:354: undefined reference to `pthread_getcpuclockid'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/install/usr/lib/libpython3.11.a(dynload_shlib.o): in function `_PyImport_FindSharedFuncptr':
      /root/parts/python/build/./Python/dynload_shlib.c:80: undefined reference to `dlopen'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/./Python/dynload_shlib.c:109: undefined reference to `dlsym'
      /root/parts/python/install/usr/bin/ld: /root/parts/python/build/./Python/dynload_shlib.c:86: undefined reference to `dlerror'
      collect2: error: ld returned 1 exit status
      ninja: build stopped: subcommand failed.
      [end of output]
  
  note: This error originates from a subprocess, and is likely not a problem with pip.
error: metadata-generation-failed

[milko.uzunov]

@milko.uzunov

stage-packages:
  - python3-dbus

When I added and

environment:
PYTHONPATH: $SNAP/usr/lib/python3/dist-packages:$PYTHONPATH

I stopped receiving ModuleNotFoundError: No module named ‘dbus’ but now on import dbus I received

import dbus
File "/snap/aps/x1/usr/lib/python3/dist-packages/dbus/__init__.py", line 73, in <module>
import dbus.types as types
File "/snap/aps/x1/usr/lib/python3/dist-packages/dbus/types.py", line 8, in <module>
from _dbus_bindings import (
ModuleNotFoundError: No module named '_dbus_bindings'

[ogra]

are you using a newer python than in the archive for your app ? or cpython ? this looks like a version mistmatch …

[milko.uzunov]

I’m using Python 3.11.

parts:
  aps:
    plugin: dump
    source: ./application.deb
    source-type: deb
    stage-packages:
      - libnspr4
      - libnss3
      - libatk-bridge2.0-0
      - libcups2
      - libgtk-3-0
      - libasound2
      - libpulse0

  python:
    plugin: autotools
    source: https://www.python.org/ftp/python/3.11.0/Python-3.11.0.tgz
    autotools-configure-parameters:
      - --enable-optimizations
      - --prefix=/usr
    build-packages:
      - build-essential
      - gdb
      - lcov
      - pkg-config
      - libbz2-dev
      - libffi-dev
      - libgdbm-dev
      - libgdbm-compat-dev
      - liblzma-dev
      - libncurses5-dev
      - libreadline6-dev
      - libsqlite3-dev
      - libssl-dev
      - lzma
      - lzma-dev
      - tk-dev
      - uuid-dev
      - zlib1g-dev
      - libglib2.0-dev
      - libgirepository1.0-dev
      - gcc
      - libcairo2-dev
      - python3-dev
      - gir1.2-gtk-3.0
      - libnm-dev
      - libusb-1.0-0-dev
      - libdbus-glib-1-dev
      - libdbus-1-dev
      - cmake
    override-stage: |
      # We want the latest pip to be able to install pyproject.toml based projects
      PYTHONUSERBASE="$SNAPCRAFT_STAGE/usr" python3.11 -m pip install --user --upgrade pip wheel

      PYTHONUSERBASE="$SNAPCRAFT_STAGE/usr" python3.11 -m pip install comtypes ConfigUpdater libusb1 osascript psutil pycaw requests sdnotify setuptools SystemdUnitParser winshell pycairo PyGObject dbus-python

      snapcraftctl stage
    stage-packages:
      - libfontconfig1
      - libfreetype6
      - libgdbm-compat4
      - libgdbm6
      - libpng16-16
      - libtcl8.6
      - libtk8.6
      - libx11-6
      - libxau6
      - libxcb1
      - libxdmcp6
      - libxext6
      - libxft2
      - libxrender1
      - libxss1
      - libglib2.0-0
      - libffi7
      - libgirepository1.0-dev
      - gcc
      - libcairo2-dev
      - pkg-config
      - python3-dev
      - gir1.2-gtk-3.0
      - gir1.2-nm-1.0
      - libusb-1.0-0-dev
    prime:
      - -etc
      - -lib/systemd
      - -usr/bin/2to3
      - -usr/bin/2to3-3.11
      - -usr/bin/deb-systemd-helper
      - -usr/bin/deb-systemd-invoke
      - -usr/bin/easy_install-3.11
      - -usr/bin/idle3
      - -usr/bin/idle3.11
      - -usr/bin/pydoc3
      - -usr/bin/pydoc3.11
      - -usr/bin/python3.11-config
      - -usr/bin/python3-config
      - -usr/bin/uuidgen
      - -usr/include
      - -usr/lib/*.a
      - -usr/lib/pkgconfig
      - -usr/lib/python3.11/test
      - -usr/sbin
      - -usr/share
      - -var

[milko.uzunov]

When I add

stage-packages:
  - python3-dbus

On Ubuntu Core, I found only this

./snap/aps/x1/usr/lib/python3/dist-packages/_dbus_bindings.cpython-38-aarch64-linux-gnu.so
./snap/aps/x1/usr/lib/python3/dist-packages/_dbus_glib_bindings.cpython-38-aarch64-linux-gnu.so

I think that the problem is cpython-38 but don’t know how do I fix it

[ogra]

well, you are mixing different python versions, that won’t work i guess … what is the reason to use 3.11 instead of the available 3.8 ? from an application POV it should not make much of a difference …

[milko.uzunov]

Some things we use don’t work on 3.8.

[milko.uzunov]

I resolved my issue with os.system('dbus-send --system --print-reply "--dest=org.freedesktop.login1" /org/freedesktop/login1 org.freedesktop.login1.Manager.Reboot boolean:true'). I found out that there is a problem with the dbus-python 1.3.2 library build on python 3.11. This might be a solution but I haven’t tried it https://pypi.org/project/zymod/