nixos/kexec: don't clobber existing kexec-loaded kernel
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@ -13,6 +13,9 @@
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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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