44 lines
1 KiB
Nix
44 lines
1 KiB
Nix
{
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config
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, pkgs
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, lib
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, ...
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}:
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let
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inherit (lib) mkIf mkOption types;
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o = config.system.outputs;
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in
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{
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imports = [
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./initramfs.nix
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];
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config = mkIf (config.rootfsType == "ext4") {
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kernel.config = {
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EXT4_FS = "y";
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EXT4_USE_FOR_EXT2 = "y";
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FS_ENCRYPTION = "y";
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};
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boot.initramfs.enable = true;
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system.outputs = {
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systemConfiguration =
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pkgs.systemconfig config.filesystem.contents;
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rootfs =
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let
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inherit (pkgs.pkgsBuildBuild) runCommand e2fsprogs;
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in runCommand "mkfs.ext4" {
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depsBuildBuild = [ e2fsprogs ];
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} ''
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cp -a ${o.rootfsFiles} tmp
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${if config.boot.loader.extlinux.enable
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then "(cd tmp && ln -s ${o.extlinux} boot)"
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else ""
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}
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size=$(du -s --apparent-size --block-size 1024 tmp |cut -f1)
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# add 25% for filesystem overhead
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size=$(( 5 * $size / 4))
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dd if=/dev/zero of=$out bs=1024 count=$size
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mke2fs -t ext4 -j -d tmp $out
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'';
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};
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};
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}
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