forked from mirrors/nixpkgs
26 lines
904 B
Nix
26 lines
904 B
Nix
{ pkgs, lib, ... }:
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{
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config = lib.mkIf (lib.any (lib.meta.platformMatch pkgs.stdenv.hostPlatform) pkgs.kexectools.meta.platforms) {
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environment.systemPackages = [ pkgs.kexectools ];
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systemd.services."prepare-kexec" =
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{ description = "Preparation for kexec";
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wantedBy = [ "kexec.target" ];
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before = [ "systemd-kexec.service" ];
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unitConfig.DefaultDependencies = false;
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serviceConfig.Type = "oneshot";
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path = [ pkgs.kexectools ];
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script =
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''
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# Don't load the current system profile if we already have a kernel loaded
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[[ 1 = "$(</sys/kernel/kexec_loaded)" ]] && exit
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p=$(readlink -f /nix/var/nix/profiles/system)
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if ! [ -d $p ]; then exit 1; fi
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exec kexec --load $p/kernel --initrd=$p/initrd --append="$(cat $p/kernel-params) init=$p/init"
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'';
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};
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};
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}
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