[Jailkit-dev] jk_init will fail in Debian if /dev/ is needed

[Eriberto]

Dear developer,

Debian 11 Bullseye, released last Saturday, Debian Unstable and Debian
Testing (future 12 Bookworm), dropped support for Python 2. Currently,
when trying to create a jail with a /dev/ device, the following
message is shown: "Failed to create device /chroot/dev/random, this is
a know problem with python 2.1".

See an example:

# jk_init -j /teste-jailkit cvs
Copying /usr/bin/cvs to /teste-jailkit/usr/bin/cvs
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libcrypt.so.1 to
libcrypt.so.1.1.0
Copying /lib/x86_64-linux-gnu/libcrypt.so.1.1.0 to
/teste-jailkit/lib/x86_64-linux-gnu/libcrypt.so.1.1.0
Creating symlink
/teste-jailkit/usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2 to
libgssapi_krb5.so.2.2
Copying /usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2.2 to
/teste-jailkit/usr/lib/x86_64-linux-gnu/libgssapi_krb5.so.2.2
Creating symlink /teste-jailkit/usr/lib/x86_64-linux-gnu/libkrb5.so.3
to libkrb5.so.3.3
Copying /usr/lib/x86_64-linux-gnu/libkrb5.so.3.3 to
/teste-jailkit/usr/lib/x86_64-linux-gnu/libkrb5.so.3.3
Creating symlink /teste-jailkit/usr/lib/x86_64-linux-gnu/libbsd.so.0
to libbsd.so.0.11.3
Copying /usr/lib/x86_64-linux-gnu/libbsd.so.0.11.3 to
/teste-jailkit/usr/lib/x86_64-linux-gnu/libbsd.so.0.11.3
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libz.so.1 to libz.so.1.2.11
Copying /lib/x86_64-linux-gnu/libz.so.1.2.11 to
/teste-jailkit/lib/x86_64-linux-gnu/libz.so.1.2.11
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libc.so.6 to libc-2.31.so
Copying /lib/x86_64-linux-gnu/libc-2.31.so to
/teste-jailkit/lib/x86_64-linux-gnu/libc-2.31.so
Creating symlink
/teste-jailkit/usr/lib/x86_64-linux-gnu/libk5crypto.so.3 to
libk5crypto.so.3.1
Copying /usr/lib/x86_64-linux-gnu/libk5crypto.so.3.1 to
/teste-jailkit/usr/lib/x86_64-linux-gnu/libk5crypto.so.3.1
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libcom_err.so.2
to libcom_err.so.2.1
Copying /lib/x86_64-linux-gnu/libcom_err.so.2.1 to
/teste-jailkit/lib/x86_64-linux-gnu/libcom_err.so.2.1
Creating symlink
/teste-jailkit/usr/lib/x86_64-linux-gnu/libkrb5support.so.0 to
libkrb5support.so.0.1
Copying /usr/lib/x86_64-linux-gnu/libkrb5support.so.0.1 to
/teste-jailkit/usr/lib/x86_64-linux-gnu/libkrb5support.so.0.1
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libkeyutils.so.1
to libkeyutils.so.1.9
Copying /lib/x86_64-linux-gnu/libkeyutils.so.1.9 to
/teste-jailkit/lib/x86_64-linux-gnu/libkeyutils.so.1.9
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libresolv.so.2 to
libresolv-2.31.so
Copying /lib/x86_64-linux-gnu/libresolv-2.31.so to
/teste-jailkit/lib/x86_64-linux-gnu/libresolv-2.31.so
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libdl.so.2 to libdl-2.31.so
Copying /lib/x86_64-linux-gnu/libdl-2.31.so to
/teste-jailkit/lib/x86_64-linux-gnu/libdl-2.31.so
Creating symlink /teste-jailkit/usr/lib/x86_64-linux-gnu/libmd.so.0 to
libmd.so.0.0.4
Copying /usr/lib/x86_64-linux-gnu/libmd.so.0.0.4 to
/teste-jailkit/usr/lib/x86_64-linux-gnu/libmd.so.0.0.4
Creating symlink /teste-jailkit/lib64/ld-linux-x86-64.so.2 to
/lib/x86_64-linux-gnu/ld-2.31.so
Copying /lib/x86_64-linux-gnu/ld-2.31.so to
/teste-jailkit/lib/x86_64-linux-gnu/ld-2.31.so
Creating symlink /teste-jailkit/lib/x86_64-linux-gnu/libpthread.so.0
to libpthread-2.31.so
Copying /lib/x86_64-linux-gnu/libpthread-2.31.so to
/teste-jailkit/lib/x86_64-linux-gnu/libpthread-2.31.so
mknod: número maior de dispositivo é inválido “1.01171875”
Failed to create device /teste-jailkit/dev/null, this is a know
problem with python 2.1
use "ls -l /dev/null" to find out the mode, major and minor for the device
use "mknod /teste-jailkit/dev/null mode major minor" to create the device
use chmod and chown to set the permissions as found by ls -l

This bug is related to Debian bug #992422, available here[1].

[1] https://bugs.debian.org/992422

Regards,

Eriberto