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25 lines
837 B
Nix
25 lines
837 B
Nix
# Create an initial ramdisk containing the closure of the specified
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# `init' package. An initial ramdisk is used during the initial
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# stages of booting a Linux system. It is loaded by the boot loader
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# along with the kernel image. It's supposed to contain everything
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# (such as kernel modules) necessary to allow us to mount the root
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# file system. Once the root file system is mounted, the `real' boot
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# script can be called.
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#
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# An initrd is really just a gzipped cpio archive.
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#
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# A symlink `/init' is made to the store path passed in the `init'
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# argument.
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{stdenv, cpio, init}:
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stdenv.mkDerivation {
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name = "initrd";
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builder = ./make-initrd.sh;
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buildInputs = [cpio];
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inherit init;
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# For obtaining the closure of `init'.
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exportReferencesGraph = ["init-closure" init];
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pathsFromGraph = ./paths-from-graph.sh;
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}
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