3923a7d3f8
This got... long... and complicated. But I think it's a really good demonstration of getting redo to do complicated things elegantly. At least, I hope it is.
34 lines
840 B
Text
34 lines
840 B
Text
exec >&2
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./need.sh python kvm busybox
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redo-ifchange "$2.initrd" memcalc.py
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rm -f "$3.out" "$3.code"
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# Linux only allows an initrd of size < 50% of RAM,
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# so set a RAM amount based on the initrd size.
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mem=$(./memcalc.py "$2.initrd")
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echo "$2: kvm memory required: $mem"
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kvm \
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-m "$mem" \
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-kernel /boot/vmlinuz-$(uname -r) \
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-initrd "$2.initrd" \
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-append 'rdinit=/rdinit panic=1 console=ttyS0 loglevel=4' \
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-no-reboot \
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-display none \
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-chardev stdio,mux=on,id=char0 \
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-chardev file,id=char1,path="$3.out" \
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-chardev file,id=char2,path="$3.code" \
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-serial chardev:char0 \
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-serial chardev:char1 \
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-serial chardev:char2
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read rv <$3.code || true
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[ -z "$rv" ] && exit 99
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if [ "$rv" -eq 0 ]; then
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sed -e 's/\r//g' "$3.out" >$3
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echo "ok." >&2
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else
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echo "kvm program returned error: $rv" >&2
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fi
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rm -f "$3.out" "$3.code"
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exit "$rv"
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