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nixos/kexec: don't clobber existing kexec-loaded kernel

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This commit is contained in:
Linus Heckemann 2019-04-26 00:33:40 +02:00
parent 2024421f04
commit 4d667685c2
1 changed files with 3 additions and 0 deletions
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3
nixos/modules/system/boot/kexec.nix
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@ -13,6 +13,9 @@
path = [ pkgs.kexectools ];
script =
''
# Don't load the current system profile if we already have a kernel loaded
[[ 1 = "$(</sys/kernel/kexec_loaded)" ]] && exit
p=$(readlink -f /nix/var/nix/profiles/system)
if ! [ -d $p ]; then exit 1; fi
exec kexec --load $p/kernel --initrd=$p/initrd --append="$(cat $p/kernel-params) init=$p/init"