ff12a7954c
As in2a5fcfae02and in3e67e5c992using /usr/bin/env allows bash to be looked up in PATH rather than being hard-coded. As with the previous changes the same arguments apply - distributions have scripts to rewrite shebangs on installation and they know what locations to rely on. - For tests/compilation we should rather rely on the user to have setup there PATH correctly. In particular this makes testing from git easier on NixOS where do not provide /bin/bash to improve compose-ability.
54 lines
1 KiB
Bash
Executable file
54 lines
1 KiB
Bash
Executable file
#!/usr/bin/env bash
|
|
|
|
set -e
|
|
set -u
|
|
set -o pipefail
|
|
|
|
root="${1:?Usage $0 container-root}"
|
|
mkdir -p "$root"
|
|
mkdir "$root/bin"
|
|
cp $(type -P busybox) "$root/bin"
|
|
|
|
mkdir -p "$root/usr/lib"
|
|
touch "$root/usr/lib/os-release"
|
|
|
|
ln -s busybox "$root/bin/sh"
|
|
ln -s busybox "$root/bin/cat"
|
|
ln -s busybox "$root/bin/tr"
|
|
ln -s busybox "$root/bin/ps"
|
|
ln -s busybox "$root/bin/ip"
|
|
|
|
mkdir -p "$root/sbin"
|
|
cat <<'EOF' >"$root/sbin/init"
|
|
#!/bin/sh
|
|
|
|
printf "ps aufx:\n"
|
|
ps aufx
|
|
|
|
printf "/proc/1/cmdline:\n"
|
|
printf "%s\n\n" "$(tr '\0' ' ' </proc/1/cmdline)"
|
|
|
|
printf "/proc/1/environ:\n"
|
|
printf "%s\n\n" "$(tr '\0' '\n' </proc/1/environ)"
|
|
|
|
printf "/proc/1/mountinfo:\n"
|
|
cat /proc/self/mountinfo
|
|
printf "\n"
|
|
|
|
printf "/proc/1/cgroup:\n"
|
|
printf "%s\n\n" "$(cat /proc/1/cgroup)"
|
|
|
|
printf "/proc/1/uid_map:\n"
|
|
printf "%s\n\n" "$(cat /proc/1/uid_map)"
|
|
|
|
printf "/proc/1/setgroups:\n"
|
|
printf "%s\n\n" "$(cat /proc/1/setgroups)"
|
|
|
|
printf "/proc/1/gid_map:\n"
|
|
printf "%s\n\n" "$(cat /proc/1/gid_map)"
|
|
|
|
printf "ip link:\n"
|
|
ip link
|
|
EOF
|
|
chmod +x "$root/sbin/init"
|