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iso-image: make sure volumeID is less than 32 chars

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This commit is contained in:
worldofpeace 2020-03-27 21:09:07 -04:00
parent 70a8e9ace9
commit 591e8d5708
1 changed files with 13 additions and 0 deletions
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13
nixos/modules/installer/cd-dvd/iso-image.nix
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@ -524,6 +524,19 @@ in
};
config = {
assertions = [
{
assertion = !(stringLength config.isoImage.volumeID > 32);
# https://wiki.osdev.org/ISO_9660#The_Primary_Volume_Descriptor
# Volume Identifier can only be 32 bytes
message = let
length = stringLength config.isoImage.volumeID;
howmany = toString length;
toomany = toString (length - 32);
in
"isoImage.volumeID ${config.isoImage.volumeID} is ${howmany} characters. That is ${toomany} characters longer than the limit of 32.";
}
];
boot.loader.grub.version = 2;