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|
{ config, lib, ... }:
with lib;
let
cfg = config.boot;
in
{
###### interface
options = {
boot.cleanTmpDir = mkOption {
type = types.bool;
default = false;
description = ''
Whether to delete all files in <filename>/tmp</filename> during boot.
'';
};
boot.tmpOnTmpfs = mkOption {
type = types.bool;
default = false;
description = ''
Whether to mount a tmpfs on <filename>/tmp</filename> during boot.
'';
};
boot.tmpOnTmpfsSize = mkOption {
type = types.oneOf [ types.str types.types.ints.positive ];
default = "50%";
description = ''
Size of tmpfs in percentage.
Percentage is defined by systemd.
'';
};
};
###### implementation
config = {
# When changing remember to update /tmp mount in virtualisation/qemu-vm.nix
systemd.mounts = mkIf cfg.tmpOnTmpfs [
{
what = "tmpfs";
where = "/tmp";
type = "tmpfs";
mountConfig.Options = concatStringsSep "," [ "mode=1777"
"strictatime"
"rw"
"nosuid"
"nodev"
"size=${toString cfg.tmpOnTmpfsSize}" ];
}
];
systemd.tmpfiles.rules = optional config.boot.cleanTmpDir "D! /tmp 1777 root root";
};
}
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