upx/misc/podman/rebuild-stubs/20-image-run-shell.sh
Markus F.X.J. Oberhumer 8393ded1b3 CI updates
2024-05-01 13:11:12 +02:00

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#! /usr/bin/env bash
## vim:set ts=4 sw=4 et:
set -e; set -o pipefail
argv0=$0; argv0abs="$(readlink -fn "$argv0")"; argv0dir="$(dirname "$argv0abs")"
# run an interactive shell in the image
# using a rootless Podman container
# Copyright (C) Markus Franz Xaver Johannes Oberhumer
image="$("$argv0dir/10-create-image.sh" --print-image)"
flags=( --read-only --rm --pull=never )
flags+=( --cap-drop=all ) # drop all capabilities
flags+=( --network=none ) # no network needed
flags+=( -ti -e TERM="$TERM" ) # allocate an interactive pseudo-tty and pass $TERM
if [[ 1 == 1 ]]; then
# run as user upx 2000:2000
flags+=( --user 2000 )
# map container users 0..999 to subuid-users 1..1000, and map container user 2000 to current host user
flags+=( --uidmap=0:1:1000 --uidmap=2000:0:1 )
# map container groups 0..999 to subgid-groups 1..1000, and map container group 2000 to current host group
flags+=( --gidmap=0:1:1000 --gidmap=2000:0:1 )
# NOTE: we mount the upx top-level directory read-write under /home/upx/src/upx
# INFO: SELinux users *may* have to add ":z" to the volume mount flags; check the docs!
flags+=( -v "${argv0dir}/../../..:/home/upx/src/upx" )
flags+=( -w /home/upx/src/upx ) # set working directory
flags+=( --tmpfs /home/upx/.cache:rw,exec ) # mount a writeable tmpfs
flags+=( --tmpfs /home/upx/.config:rw,exec ) # mount a writeable tmpfs
flags+=( --tmpfs /home/upx/.local:rw,exec ) # mount a writeable tmpfs
else
# run as user root 0:0
# ONLY FOR DEBUGGING THE IMAGE
# map container user/group 0 to current host user/group
flags+=( --user 0 )
fi
if [[ $# == 0 ]]; then
podman run "${flags[@]}" "$image" bash -l
else
podman run "${flags[@]}" "$image" "$@"
fi
# now we can rebuild the UPX stubs:
# cd /home/upx/src/upx/src/stub
# # make sure that git is clean:
# git status .
# # remove stub files and make sure that they got deleted:
# make maintainer-clean extra-clean
# git status .
# # rebuild
# make extra-all all
# # make sure that the stub files did rebuild correctly:
# git status .
# git diff .
# we can also build UPX in the container:
# cd /home/upx/src/upx
# rm -rf ./build/extra/gcc/release
# make build/extra/gcc/release
# # run tests
# ./build/extra/gcc/release/upx --version
# make -C build/extra/gcc/release test
# and we can also build UPX with -m32:
# cd /home/upx/src/upx
# rm -rf ./build/extra/gcc-m32/release
# make build/extra/gcc-m32/release
# # run tests
# ./build/extra/gcc-m32/release/upx --version
# make -C build/extra/gcc-m32/release test
# and we can also build UPX with -mx32: (NOTE: needs CONFIG_X86_X32_ABI on host kernel!)
# cd /home/upx/src/upx
# rm -rf ./build/extra/gcc-mx32/release
# make build/extra/gcc-mx32/release
# # run tests (needs CONFIG_X86_X32_ABI on host kernel)
# ./build/extra/gcc-mx32/release/upx --version
# make -C build/extra/gcc-mx32/release test
# and we can also rebuild the UPX docs the container:
# cd /home/upx/src/upx/doc
# make clean all
# git status .
# git diff .