mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-28 08:33:54 +00:00
c10a17a3eb
Partially reverts the following commits:9f2a61c59c9c13fe6604As @edolstra pointed out, it would make more sense to do this by default instead of having that allowImpurePaths option. This of course might break systems which add extra packages to udev, but on the upside it's hard to miss one of these paths now because it won't get buried in the ocean of build output lines. Signed-off-by: aszlig <aszlig@redmoonstudios.org>
323 lines
9.8 KiB
Nix
323 lines
9.8 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
with lib;
|
|
|
|
let
|
|
|
|
inherit (pkgs) stdenv writeText procps;
|
|
|
|
udev = config.systemd.package;
|
|
|
|
cfg = config.services.udev;
|
|
|
|
extraUdevRules = pkgs.writeTextFile {
|
|
name = "extra-udev-rules";
|
|
text = cfg.extraRules;
|
|
destination = "/etc/udev/rules.d/10-local.rules";
|
|
};
|
|
|
|
extraHwdbFile = pkgs.writeTextFile {
|
|
name = "extra-hwdb-file";
|
|
text = cfg.extraHwdb;
|
|
destination = "/etc/udev/hwdb.d/10-local.hwdb";
|
|
};
|
|
|
|
nixosRules = ''
|
|
# Miscellaneous devices.
|
|
KERNEL=="kvm", MODE="0666"
|
|
KERNEL=="kqemu", MODE="0666"
|
|
|
|
# Needed for gpm.
|
|
SUBSYSTEM=="input", KERNEL=="mice", TAG+="systemd"
|
|
'';
|
|
|
|
# Perform substitutions in all udev rules files.
|
|
udevRules = stdenv.mkDerivation {
|
|
name = "udev-rules";
|
|
|
|
preferLocalBuild = true;
|
|
allowSubstitutes = false;
|
|
|
|
buildCommand = ''
|
|
mkdir -p $out
|
|
shopt -s nullglob
|
|
set +o pipefail
|
|
|
|
# Set a reasonable $PATH for programs called by udev rules.
|
|
echo 'ENV{PATH}="${udevPath}/bin:${udevPath}/sbin"' > $out/00-path.rules
|
|
|
|
# Add the udev rules from other packages.
|
|
for i in ${toString cfg.packages}; do
|
|
echo "Adding rules for package $i"
|
|
for j in $i/{etc,lib}/udev/rules.d/*; do
|
|
echo "Copying $j to $out/$(basename $j)"
|
|
cat $j > $out/$(basename $j)
|
|
done
|
|
done
|
|
|
|
# Fix some paths in the standard udev rules. Hacky.
|
|
for i in $out/*.rules; do
|
|
substituteInPlace $i \
|
|
--replace \"/sbin/modprobe \"${config.system.sbin.modprobe}/sbin/modprobe \
|
|
--replace \"/sbin/mdadm \"${pkgs.mdadm}/sbin/mdadm \
|
|
--replace \"/sbin/blkid \"${pkgs.utillinux}/sbin/blkid \
|
|
--replace \"/bin/mount \"${pkgs.utillinux}/bin/mount \
|
|
--replace /usr/bin/readlink ${pkgs.coreutils}/bin/readlink \
|
|
--replace /usr/bin/basename ${pkgs.coreutils}/bin/basename
|
|
done
|
|
|
|
echo -n "Checking that all programs called by relative paths in udev rules exist in ${udev}/lib/udev... "
|
|
import_progs=$(grep 'IMPORT{program}="[^/$]' $out/* |
|
|
sed -e 's/.*IMPORT{program}="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
run_progs=$(grep -v '^[[:space:]]*#' $out/* | grep 'RUN+="[^/$]' |
|
|
sed -e 's/.*RUN+="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
for i in $import_progs $run_progs; do
|
|
if [[ ! -x ${pkgs.udev}/lib/udev/$i && ! $i =~ socket:.* ]]; then
|
|
echo "FAIL"
|
|
echo "$i is called in udev rules but not installed by udev"
|
|
exit 1
|
|
fi
|
|
done
|
|
echo "OK"
|
|
|
|
echo -n "Checking that all programs called by absolute paths in udev rules exist... "
|
|
import_progs=$(grep 'IMPORT{program}="\/' $out/* |
|
|
sed -e 's/.*IMPORT{program}="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
run_progs=$(grep -v '^[[:space:]]*#' $out/* | grep 'RUN+="/' |
|
|
sed -e 's/.*RUN+="\([^ "]*\)[ "].*/\1/' | uniq)
|
|
for i in $import_progs $run_progs; do
|
|
if [[ ! -x $i ]]; then
|
|
echo "FAIL"
|
|
echo "$i is called in udev rules but not installed by udev"
|
|
exit 1
|
|
fi
|
|
done
|
|
echo "OK"
|
|
|
|
filesToFixup="$(for i in "$out"/*; do
|
|
grep -l '\B\(/usr\)\?/s\?bin' "$i" || :
|
|
done)"
|
|
|
|
if [ -n "$filesToFixup" ]; then
|
|
echo "Consider fixing the following udev rules:"
|
|
echo "$filesToFixup" | while read localFile; do
|
|
remoteFile="origin unknown"
|
|
for i in ${toString cfg.packages}; do
|
|
for j in "$i"/*/udev/rules.d/*; do
|
|
if [ -e "$out/$(basename "$j")" ]; then
|
|
remoteFile="originally from $j"
|
|
break 2
|
|
fi
|
|
done
|
|
done
|
|
refs="$(
|
|
grep -o '\B\(/usr\)\?/s\?bin/[^ "]\+' "$localFile" \
|
|
| sed -e ':r;N;''${s/\n/ and /;br};s/\n/, /g;br'
|
|
)"
|
|
echo "$localFile ($remoteFile) contains references to $refs."
|
|
done
|
|
exit 1
|
|
fi
|
|
|
|
${optionalString config.networking.usePredictableInterfaceNames ''
|
|
cp ${./80-net-setup-link.rules} $out/80-net-setup-link.rules
|
|
''}
|
|
|
|
# If auto-configuration is disabled, then remove
|
|
# udev's 80-drivers.rules file, which contains rules for
|
|
# automatically calling modprobe.
|
|
${optionalString (!config.boot.hardwareScan) ''
|
|
ln -s /dev/null $out/80-drivers.rules
|
|
''}
|
|
''; # */
|
|
};
|
|
|
|
hwdbBin = stdenv.mkDerivation {
|
|
name = "hwdb.bin";
|
|
|
|
preferLocalBuild = true;
|
|
allowSubstitutes = false;
|
|
|
|
buildCommand = ''
|
|
mkdir -p etc/udev/hwdb.d
|
|
for i in ${toString ([udev] ++ cfg.packages)}; do
|
|
echo "Adding hwdb files for package $i"
|
|
for j in $i/{etc,lib}/udev/hwdb.d/*; do
|
|
ln -s $j etc/udev/hwdb.d/$(basename $j)
|
|
done
|
|
done
|
|
|
|
echo "Generating hwdb database..."
|
|
${udev}/bin/udevadm hwdb --update --root=$(pwd)
|
|
mv etc/udev/hwdb.bin $out
|
|
'';
|
|
};
|
|
|
|
# Udev has a 512-character limit for ENV{PATH}, so create a symlink
|
|
# tree to work around this.
|
|
udevPath = pkgs.buildEnv {
|
|
name = "udev-path";
|
|
paths = cfg.path;
|
|
pathsToLink = [ "/bin" "/sbin" ];
|
|
ignoreCollisions = true;
|
|
};
|
|
|
|
in
|
|
|
|
{
|
|
|
|
###### interface
|
|
|
|
options = {
|
|
|
|
boot.hardwareScan = mkOption {
|
|
type = types.bool;
|
|
default = true;
|
|
description = ''
|
|
Whether to try to load kernel modules for all detected hardware.
|
|
Usually this does a good job of providing you with the modules
|
|
you need, but sometimes it can crash the system or cause other
|
|
nasty effects.
|
|
'';
|
|
};
|
|
|
|
services.udev = {
|
|
|
|
packages = mkOption {
|
|
type = types.listOf types.path;
|
|
default = [];
|
|
description = ''
|
|
List of packages containing <command>udev</command> rules.
|
|
All files found in
|
|
<filename><replaceable>pkg</replaceable>/etc/udev/rules.d</filename> and
|
|
<filename><replaceable>pkg</replaceable>/lib/udev/rules.d</filename>
|
|
will be included.
|
|
'';
|
|
};
|
|
|
|
path = mkOption {
|
|
type = types.listOf types.path;
|
|
default = [];
|
|
description = ''
|
|
Packages added to the <envar>PATH</envar> environment variable when
|
|
executing programs from Udev rules.
|
|
'';
|
|
};
|
|
|
|
extraRules = mkOption {
|
|
default = "";
|
|
example = ''
|
|
KERNEL=="eth*", ATTR{address}=="00:1D:60:B9:6D:4F", NAME="my_fast_network_card"
|
|
'';
|
|
type = types.lines;
|
|
description = ''
|
|
Additional <command>udev</command> rules. They'll be written
|
|
into file <filename>10-local.rules</filename>. Thus they are
|
|
read before all other rules.
|
|
'';
|
|
};
|
|
|
|
extraHwdb = mkOption {
|
|
default = "";
|
|
example = ''
|
|
evdev:input:b0003v05AFp8277*
|
|
KEYBOARD_KEY_70039=leftalt
|
|
KEYBOARD_KEY_700e2=leftctrl
|
|
'';
|
|
type = types.lines;
|
|
description = ''
|
|
Additional <command>hwdb</command> files. They'll be written
|
|
into file <filename>10-local.hwdb</filename>. Thus they are
|
|
read before all other files.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
hardware.firmware = mkOption {
|
|
type = types.listOf types.package;
|
|
default = [];
|
|
description = ''
|
|
List of packages containing firmware files. Such files
|
|
will be loaded automatically if the kernel asks for them
|
|
(i.e., when it has detected specific hardware that requires
|
|
firmware to function). If multiple packages contain firmware
|
|
files with the same name, the first package in the list takes
|
|
precedence. Note that you must rebuild your system if you add
|
|
files to any of these directories.
|
|
'';
|
|
apply = list: pkgs.buildEnv {
|
|
name = "firmware";
|
|
paths = list;
|
|
pathsToLink = [ "/lib/firmware" ];
|
|
ignoreCollisions = true;
|
|
};
|
|
};
|
|
|
|
networking.usePredictableInterfaceNames = mkOption {
|
|
default = true;
|
|
type = types.bool;
|
|
description = ''
|
|
Whether to assign <link
|
|
xlink:href='http://www.freedesktop.org/wiki/Software/systemd/PredictableNetworkInterfaceNames'>predictable
|
|
names to network interfaces</link>. If enabled, interfaces
|
|
are assigned names that contain topology information
|
|
(e.g. <literal>wlp3s0</literal>) and thus should be stable
|
|
across reboots. If disabled, names depend on the order in
|
|
which interfaces are discovered by the kernel, which may
|
|
change randomly across reboots; for instance, you may find
|
|
<literal>eth0</literal> and <literal>eth1</literal> flipping
|
|
unpredictably.
|
|
'';
|
|
};
|
|
|
|
};
|
|
|
|
|
|
###### implementation
|
|
|
|
config = mkIf (!config.boot.isContainer) {
|
|
|
|
services.udev.extraRules = nixosRules;
|
|
|
|
services.udev.packages = [ extraUdevRules extraHwdbFile ];
|
|
|
|
services.udev.path = [ pkgs.coreutils pkgs.gnused pkgs.gnugrep pkgs.utillinux udev ];
|
|
|
|
environment.etc =
|
|
[ { source = udevRules;
|
|
target = "udev/rules.d";
|
|
}
|
|
{ source = hwdbBin;
|
|
target = "udev/hwdb.bin";
|
|
}
|
|
];
|
|
|
|
system.requiredKernelConfig = with config.lib.kernelConfig; [
|
|
(isEnabled "UNIX")
|
|
(isYes "INOTIFY_USER")
|
|
(isYes "NET")
|
|
];
|
|
|
|
boot.extraModprobeConfig = "options firmware_class path=${config.hardware.firmware}/lib/firmware";
|
|
|
|
system.activationScripts.udevd =
|
|
''
|
|
# The deprecated hotplug uevent helper is not used anymore
|
|
if [ -e /proc/sys/kernel/hotplug ]; then
|
|
echo "" > /proc/sys/kernel/hotplug
|
|
fi
|
|
|
|
# Allow the kernel to find our firmware.
|
|
if [ -e /sys/module/firmware_class/parameters/path ]; then
|
|
echo -n "${config.hardware.firmware}/lib/firmware" > /sys/module/firmware_class/parameters/path
|
|
fi
|
|
'';
|
|
|
|
systemd.services.systemd-udevd =
|
|
{ environment.MODULE_DIR = "/run/booted-system/kernel-modules/lib/modules";
|
|
};
|
|
|
|
};
|
|
}
|