45 lines
1.2 KiB
Bash
45 lines
1.2 KiB
Bash
#!/hint/bash -euE
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post_install+=(10:systemd-osi-shell:post_install)
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systemd-osi-shell:post_install() {
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local arg_mountpoint=$1
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cat <<-'EOT' > "${arg_mountpoint}/etc/systemd/system/osi-shell.target"
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[Unit]
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Description=osi-shell target
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Requires=multi-user.target
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After=multi-user.target
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Conflicts=rescue.target
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AllowIsolate=yes
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EOT
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ln -sfT -- osi-shell.target "${arg_mountpoint}/etc/systemd/system/default.target"
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cat <<-'EOT' > "${arg_mountpoint}/etc/systemd/system/osi-shell.service"
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[Unit]
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Description=osi-shell service
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Wants=network-online.target
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After=network-online.target
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[Service]
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KillSignal=SIGHUP
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KillMode=process
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IgnoreSIGPIPE=no
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ExecStart=/bin/login -p -f root
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StandardInput=tty
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TTYPath=/dev/ttyS0
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TTYReset=yes
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TTYVHangup=yes
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# Write the exit status to ttyS1 and poweroff
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# Bash sets exit status to 128+SIGNAL if we get killed by a signal,
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# but there's not a good one-liner way to get from signal name to number,
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# so just use 128.
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ExecStopPost=/bin/sh -c 'if [ "$EXIT_CODE" = exited ]; then echo $EXIT_STATUS; else echo 128; fi > /dev/ttyS1; systemctl poweroff --no-block'
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[Install]
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WantedBy=osi-shell.target
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EOT
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systemctl --root="$arg_mountpoint" enable osi-shell.service
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}
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