Package: schroot Version: 1.6.10-11 Severity: normal Steps to reproduce ------------------
(Replace or remove the http proxy http://192.168.122.1:3142 as required.) sudo apt install lxc autopkgtest (configure lxc as per [1]) sudo AUTOPKGTEST_APT_PROXY=http://192.168.122.1:3142 autopkgtest-build-lxc debian sid amd64 sudo lxc-copy --ephemeral -n autopkgtest-sid-amd64 -N temp sudo lxc-attach -n temp and then inside the lxc container: apt install debootstrap schroot http_proxy=http://192.168.122.1:3142 debootstrap sid /sid cat > /etc/schroot/chroot.d/sid <<EOF [sid] type=directory directory=/sid groups=root root-groups=root EOF schroot -c sid -- ls -al /dev schroot -c sid -- script -c 'cat /etc/os-release' /tmp/transcript [1] https://salsa.debian.org/ci-team/autopkgtest/-/blob/master/debian/README.source Expected result --------------- * /dev contains at least minimal devices, including /dev/console and /dev/ptmx * script(1) works and prints the contents of /etc/os-release Actual result ------------- * Some devices in /dev are reasonable, but some are just regular files - Under lxc 2 (Debian 9): - /dev/console is an empty regular file with permissions 0111 - /dev/ptmx is a symlink to /dev/pts/ptmx - /dev/tty1 to /dev/tty4 are empty regular files with permissions 0640 - Under lxc 3 (Debian 10) and lxc 4 (Debian 11): - /dev/console is an empty regular file with permissions 000 - so is /dev/ptmx - so are /dev/tty1 to /dev/tty4 * Under lxc 2 (Debian 9), script works, as expected * Under lxc 3 (Debian 10) and lxc 4 (Debian 10), script fails: Script started, output log file is '/tmp/transcript'. script: failed to create pseudo-terminal: Invalid argument Proposed patch -------------- The same patch I proposed in 2017 for #856877 resolves this, setting up a working /dev/ptmx. Under lxc 2 it's a symlink to /dev/ptx/ptmx, and under lxc >= 3 it's a device node. Under lxc 4, that patch also provides a working /dev/console. I'll re-send the patch with both bug numbers included when I have a bug number for this report. smcv
