64 lines
1.7 KiB
Bash
Executable File
64 lines
1.7 KiB
Bash
Executable File
#!/bin/sh
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set -e
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#extract the version of the compiled busybox :)
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busybox_ver="$(find ./src/ -type d -maxdepth 1 -name "busy*" | cut -d- -f2)"
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mkdir initrd
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cd initrd
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mkdir -p bin dev proc sys etc usr
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#Add busybox programs
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cd bin
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cp ../../src/busybox-$busybox_ver/busybox ./
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for prog in $(./busybox --list); do
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ln -s /bin/busybox ./$prog
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done
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cd ..
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#Create initial init
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cat <<EOF >init
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#!/bin/sh
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mount -t sysfs sysfs /sys
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mount -t proc proc /proc
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mount -t devtmpfs udev /dev
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exec /bin/init
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clear
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EOF
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#Create busybox initrd
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echo "tty1::respawn:-/bin/sh" > ./etc/inittab
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#Create resolv.conf
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echo "nameserver 1.1.1.1" > ./etc/resolv.conf
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#Add curl + certificates for tls support
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#Add static curl binary
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ver="$(curl -s "https://api.github.com/repos/stunnel/static-curl/tags" | jq -r '.[0].name' | tr "_" ".")"
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rel="$(curl -s "https://api.github.com/repos/stunnel/static-curl/releases" | jq -r '.[0].name' | tr "_" ".")"
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wget "https://github.com/stunnel/static-curl/releases/download/$rel/curl-linux-x86_64-musl-$ver.tar.xz"
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tar xf curl-linux-x86_64-musl-$ver.tar.xz -C ./bin/
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rm curl-linux-x86_64-musl-$ver.tar.xz
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#Add certificates
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##very ugly way to extract the certs, but hey it just works :)
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container="$(podman run -d alpine:edge /bin/sh -c "apk add ca-certificates && update-ca-certificates && sleep 90")"
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sleep 10 #make sure that the cmds are finished (except sleep ofc)
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podman cp $container:/etc/ssl/ ./etc/
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podman container rm -f $container
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#give perms to files, #todo: find a better way someday
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#prevents errors like "can't open /dev/tty1: no such file "
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chmod -R 777 .
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#Add all the files to a img
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find . | cpio -o -H newc > ../initrd.img
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cd ..
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