2023-05-07 00:03:51 +02:00
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{
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busybox
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, pkgsBuildBuild
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, runCommand
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, cpio
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2024-12-07 16:00:29 +01:00
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, writeClosure
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2023-05-07 00:03:51 +02:00
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, writeScript
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} :
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let
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inherit (pkgsBuildBuild) gen_init_cpio;
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script = writeScript "init" ''
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#!/bin/sh
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exec >/dev/console
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echo Running in initramfs
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PATH=${busybox}/bin:$PATH
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export PATH
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mount -t proc none /proc
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mount -t sysfs none /sys
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${busybox}/bin/sh
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'';
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2024-12-07 16:00:29 +01:00
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refs = writeClosure [ busybox ];
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2023-05-07 00:03:51 +02:00
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in runCommand "initramfs.cpio" { } ''
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cat << SPECIALS | ${gen_init_cpio}/bin/gen_init_cpio /dev/stdin > out
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dir /proc 0755 0 0
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dir /sys 0755 0 0
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dir /dev 0755 0 0
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nod /dev/console 0600 0 0 c 5 1
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nod /dev/mtdblock0 0600 0 0 b 31 0
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dir /nix 0755 0 0
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dir /nix/store 0755 0 0
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dir /bin 0755 0 0
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file /bin/sh ${busybox}/bin/sh 0755 0 0
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file /init ${script} 0755 0 0
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SPECIALS
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find $(cat ${refs}) | ${pkgsBuildBuild.cpio}/bin/cpio -H newc -o -A -v -O out
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cp out $out
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''
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