mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-27 16:15:05 +00:00
43 lines
1.4 KiB
Nix
43 lines
1.4 KiB
Nix
{ stdenv, fetchurl }:
|
|
|
|
let version = "3.19"; in
|
|
stdenv.mkDerivation {
|
|
name = "freefall-${version}";
|
|
|
|
src = fetchurl {
|
|
sha256 = "0v40b5l6dcviqgl47bxlcbimz7kawmy1c2909axi441jwlgm2hmy";
|
|
url = "mirror://kernel/linux/kernel/v3.x/linux-${version}.tar.xz";
|
|
};
|
|
|
|
buildPhase = ''
|
|
cd Documentation/laptops
|
|
|
|
# Default time-out is a little low, probably because the AC/lid status
|
|
# functions were never implemented. Because no-one still uses HDDs, right?
|
|
substituteInPlace freefall.c --replace "alarm(2)" "alarm(5)"
|
|
|
|
cc -o freefall freefall.c
|
|
'';
|
|
|
|
installPhase = ''
|
|
mkdir -p $out/bin
|
|
install freefall $out/bin
|
|
'';
|
|
|
|
meta = with stdenv.lib; {
|
|
description = "Free-fall protection for spinning HP/Dell laptop hard drives";
|
|
longDescription = ''
|
|
ATA/ATAPI-7 specifies the IDLE IMMEDIATE command with unload feature.
|
|
Issuing this command should cause the drive to switch to idle mode and
|
|
unload disk heads. This feature is being used in modern laptops in
|
|
conjunction with accelerometers and appropriate software to implement
|
|
a shock protection facility. The idea is to stop all I/O operations on
|
|
the internal hard drive and park its heads on the ramp when critical
|
|
situations are anticipated. This has no effect on SSD devices!
|
|
'';
|
|
license = licenses.gpl2;
|
|
platforms = with platforms; linux;
|
|
maintainers = with maintainers; [ nckx ];
|
|
};
|
|
}
|