mmdebstrap/tests/zombie-reaping
Johannes Schauer Marin Rodrigues d0568a2b9e
Wait for (reap) potential zombies and otherwise long-running background processes
Otherwise they might hog resources like /dev/null which can then not be
unmounted resulting in their mountpoints (the regular files) not being
removable and then the removal of device nodes in run_cleanup (if
mmdebstrap is run with --skip=output/dev) will fail.

Another potential solution would be to run each hook and apt invocation
in its own process namespace but this would require to remount /proc and
this in turn would require a new mount namespace as well but we'd like
to keep the mount namespace across multiple hooks...
2024-08-18 22:07:52 +02:00

39 lines
1.1 KiB
Bash

#!/bin/sh
set -eu
export LC_ALL=C.UTF-8
export SOURCE_DATE_EPOCH={{ SOURCE_DATE_EPOCH }}
[ {{ MODE }} = "unshare" ]
trap "rm -f /tmp/debian-chroot.tar" EXIT INT TERM
prefix=
if [ "$(id -u)" -eq 0 ] && [ "{{ MODE }}" != "root" ] && [ "{{ MODE }}" != "auto" ]; then
if ! id "${SUDO_USER:-user}" >/dev/null 2>&1; then
if [ ! -e /mmdebstrap-testenv ]; then
echo "this test modifies the system and should only be run inside a container" >&2
exit 1
fi
useradd --home-dir "/home/${SUDO_USER:-user}" --create-home "${SUDO_USER:-user}"
fi
prefix="runuser -u ${SUDO_USER:-user} --"
fi
MMTARFILTER=
[ -x /usr/bin/mmtarfilter ] && MMTARFILTER=/usr/bin/mmtarfilter
[ -x ./tarfilter ] && MMTARFILTER=./tarfilter
$prefix {{ CMD }} --mode={{ MODE }} --variant=apt \
--skip=output/dev \
--customize-hook='chroot "$1" sh -c "sleep 1m > /dev/null" &' \
{{ DIST }} - {{ MIRROR }} \
| "$MMTARFILTER" --path-exclude="/dev" \
> /tmp/debian-chroot.tar
origfilter() {
< ./cache/mmdebstrap-{{ DIST }}-apt.tar \
"$MMTARFILTER" --path-exclude="/dev/*" --path-exclude="/dev"
}
origfilter | cmp - /tmp/debian-chroot.tar \
|| origfilter | diffoscope - /tmp/debian-chroot.tar