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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
1.0 KiB
Bash
Executable File
54 lines
1.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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set -e
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set -u
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set -o pipefail
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root="${1:?Usage $0 container-root}"
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mkdir -p "$root"
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mkdir "$root/bin"
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cp $(type -P busybox) "$root/bin"
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mkdir -p "$root/usr/lib"
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touch "$root/usr/lib/os-release"
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ln -s busybox "$root/bin/sh"
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ln -s busybox "$root/bin/cat"
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ln -s busybox "$root/bin/tr"
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ln -s busybox "$root/bin/ps"
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ln -s busybox "$root/bin/ip"
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mkdir -p "$root/sbin"
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cat <<'EOF' >"$root/sbin/init"
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#!/bin/sh
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printf "ps aufx:\n"
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ps aufx
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printf "/proc/1/cmdline:\n"
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printf "%s\n\n" "$(tr '\0' ' ' </proc/1/cmdline)"
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printf "/proc/1/environ:\n"
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printf "%s\n\n" "$(tr '\0' '\n' </proc/1/environ)"
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printf "/proc/1/mountinfo:\n"
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cat /proc/self/mountinfo
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printf "\n"
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printf "/proc/1/cgroup:\n"
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printf "%s\n\n" "$(cat /proc/1/cgroup)"
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printf "/proc/1/uid_map:\n"
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printf "%s\n\n" "$(cat /proc/1/uid_map)"
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printf "/proc/1/setgroups:\n"
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printf "%s\n\n" "$(cat /proc/1/setgroups)"
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printf "/proc/1/gid_map:\n"
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printf "%s\n\n" "$(cat /proc/1/gid_map)"
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printf "ip link:\n"
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ip link
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EOF
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chmod +x "$root/sbin/init"
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