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Fix (and simplify) the blcr module.

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This commit is contained in:
Marco Maggesi 2013-02-08 08:57:42 +01:00
parent 12d77805ef
commit c593065585
1 changed files with 3 additions and 33 deletions
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36
modules/programs/blcr.nix
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@ -3,15 +3,7 @@
let
inherit (pkgs.lib) mkOption mkIf;
cfg = config.environment.blcr;
kernelPkgs = config.boot.kernelPackages;
blcrPkg = kernelPkgs.blcr;
insmod = "${pkgs.module_init_tools}/sbin/insmod";
rmmod = "${pkgs.module_init_tools}/sbin/rmmod";
modulesDir = "${blcrPkg}/lib/modules/${kernelPkgs.kernel.version}";
blcr_imports_ko = "${modulesDir}/blcr_imports.ko";
blcr_ko = "${modulesDir}/blcr.ko";
blcrPkg = config.boot.kernelPackages.blcr;
in
{
@ -23,35 +15,13 @@ in
description =
"Wheter to enable support for the BLCR checkpointing tool.";
};
environment.blcr.autorun = mkOption {
default = true;
description =
"Whether to load BLCR kernel modules automatically at boot.";
};
};
###### implementation
config = mkIf cfg.enable {
boot.kernelModules = [ "blcr" "blcr_imports" ];
boot.extraModulePackages = [ blcrPkg ];
environment.systemPackages = [ blcrPkg ];
jobs.blcr = {
name = "blcr";
description = "Loads BLCR kernel modules";
task = true;
startOn = if cfg.autorun then "started udev" else null;
preStart = ''
${insmod} ${blcr_imports_ko}
${insmod} ${blcr_ko}
'';
postStop = ''
${rmmod} ${blcr_ko}
${rmmod} ${blcr_imports_ko}
'';
};
};
}