* Refactoring: move all the initrd-generation related stuff to
boot-stage-1.nix in order to unclutter system.nix. svn path=/nixos/trunk/; revision=12547
This commit is contained in:
Eelco Dolstra
parent
e7438b3525
commit
63e316ecac
@ -1,61 +1,129 @@
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# This Nix expression builds the script that performs the first stage
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# This Nix expression builds the initial ramdisk, which contains an
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# of booting the system: it loads the modules necessary to mount the
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# init script that performs the first stage of booting the system: it
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# root file system, then calls /init in the root file system to start
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# loads the modules necessary to mount the root file system, then
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# the second boot stage. The closure of the result of this expression
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# calls the init in the root file system to start the second boot
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# is supposed to be put into an initial RAM disk (initrd).
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# stage.
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{ substituteAll, staticShell, klibcShrunk
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{ pkgs, config, nixpkgsPath, kernelPackages, modulesTree }:
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, extraUtils, modulesClosure
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, # Whether to find root device automatically using its label.
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rec {
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autoDetectRootDevice
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pkgsDiet = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {
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system = pkgs.stdenv.system;
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bootStdenv = pkgs.useDietLibC pkgs.stdenv;
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};
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pkgsStatic = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {
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system = pkgs.stdenv.system;
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bootStdenv = pkgs.makeStaticBinaries pkgs.stdenv;
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};
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stdenvLinuxStuff = import "${nixpkgsPath}/pkgs/stdenv/linux" {
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system = pkgs.stdenv.system;
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allPackages = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix";
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};
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, # If not scanning, the root must be specified explicitly. Actually,
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# stage 1 can mount multiple file systems. This is necessary if,
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# for instance, /nix (necessary for stage 2) is on a different file
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# system than /.
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#
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# This is a list of {mountPoint, device|label} attribute sets, i.e.,
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# the format used by the fileSystems configuration option. There
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# must at least be a file system for the / mount point in this list.
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fileSystems ? []
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, # If scanning, we need a disk label.
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# Determine the set of modules that we need to mount the root FS.
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rootLabel
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modulesClosure = pkgs.makeModulesClosure {
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rootModules =
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config.boot.initrd.extraKernelModules ++
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config.boot.initrd.kernelModules;
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kernel = modulesTree;
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allowMissing = config.boot.initrd.allowMissing;
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};
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, # Whether the root device is read-only and should be made writable
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# through a unionfs.
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isLiveCD
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, # Resume device. [major]:[minor]
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# Some additional utilities needed in stage 1, notably mount. We
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resumeDevice ? "ignore-this"
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# don't want to bring in all of util-linux, so we just copy what we
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}:
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# need.
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extraUtils = pkgs.runCommand "extra-utils"
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let
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{ buildInputs = [pkgs.nukeReferences];
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inherit (pkgsStatic) utillinux;
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# !!! use XML; copy&pasted from upstart-jobs/filesystems.nix.
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inherit (pkgsDiet) udev;
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mountPoints = map (fs: fs.mountPoint) fileSystems;
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e2fsprogs = pkgs.e2fsprogsDiet;
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devices = map (fs: if fs ? device then fs.device else "LABEL=" + fs.label) fileSystems;
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devicemapper = if config.boot.initrd.lvm then pkgs.devicemapperStatic else null;
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fsTypes = map (fs: if fs ? fsType then fs.fsType else "auto") fileSystems;
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lvm2 = if config.boot.initrd.lvm then pkgs.lvm2Static else null;
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optionss = map (fs: if fs ? options then fs.options else "defaults") fileSystems;
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allowedReferences = []; # prevent accidents like glibc being included in the initrd
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}
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in
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''
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ensureDir $out/bin
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if !autoDetectRootDevice && mountPoints == [] then abort "You must specify the fileSystems option!" else
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if test -n "$devicemapper"; then
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cp $devicemapper/sbin/dmsetup.static $out/bin/dmsetup
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substituteAll {
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cp $lvm2/sbin/lvm.static $out/bin/lvm
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src = ./boot-stage-1-init.sh;
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fi
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cp $utillinux/bin/mount $utillinux/bin/umount $utillinux/sbin/pivot_root $out/bin
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cp -p $e2fsprogs/sbin/fsck* $e2fsprogs/sbin/e2fsck $out/bin
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cp $udev/sbin/udevd $udev/sbin/udevadm $out/bin
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nuke-refs $out/bin/*
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''; # */
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isExecutable = true;
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# The initrd only has to mount / or any FS marked as necessary for
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# booting (such as the FS containing /nix/store, or an FS needed for
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# mounting /, like / on a loopback).
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fileSystems = pkgs.lib.filter
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(fs: fs.mountPoint == "/" || (fs ? neededForBoot && fs.neededForBoot))
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config.fileSystems;
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# The init script of boot stage 1 (loading kernel modules for
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# mounting the root FS).
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bootStage1 = pkgs.substituteAll {
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src = ./boot-stage-1-init.sh;
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isExecutable = true;
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staticShell = stdenvLinuxStuff.bootstrapTools.bash;
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inherit modulesClosure;
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inherit (config.boot) autoDetectRootDevice isLiveCD resumeDevice;
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# !!! copy&pasted from upstart-jobs/filesystems.nix.
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mountPoints =
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if !config.boot.autoDetectRootDevice && fileSystems == []
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then abort "You must specify the fileSystems option!"
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else map (fs: fs.mountPoint) fileSystems;
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devices = map (fs: if fs ? device then fs.device else "LABEL=" + fs.label) fileSystems;
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fsTypes = map (fs: if fs ? fsType then fs.fsType else "auto") fileSystems;
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optionss = map (fs: if fs ? options then fs.options else "defaults") fileSystems;
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rootLabel = if config.boot.autoDetectRootDevice then config.boot.rootLabel else "";
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path = [
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extraUtils
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kernelPackages.klibcShrunk
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];
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};
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# The closure of the init script of boot stage 1 is what we put in
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# the initial RAM disk.
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initialRamdisk = pkgs.makeInitrd {
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contents = [
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{ object = bootStage1;
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symlink = "/init";
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}
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] ++
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pkgs.lib.optionals
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(config.boot.initrd.enableSplashScreen && kernelPackages.splashutils != null)
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[
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{ object = pkgs.runCommand "splashutils" {allowedReferences = []; buildInputs = [pkgs.nukeReferences];} ''
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ensureDir $out/bin
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cp ${kernelPackages.splashutils}/${kernelPackages.splashutils.helperName} $out/bin/splash_helper
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nuke-refs $out/bin/*
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'';
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suffix = "/bin/splash_helper";
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symlink = "/${kernelPackages.splashutils.helperName}";
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} # */
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{ object = import ../helpers/unpack-theme.nix {
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inherit (pkgs) stdenv;
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theme = config.services.ttyBackgrounds.defaultTheme;
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};
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symlink = "/etc/splash";
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}
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];
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};
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inherit staticShell modulesClosure;
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inherit autoDetectRootDevice isLiveCD mountPoints devices fsTypes optionss resumeDevice;
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rootLabel = if autoDetectRootDevice then rootLabel else "";
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path = [
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extraUtils
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klibcShrunk
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];
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}
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}
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@ -27,21 +27,6 @@ rec {
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pkgs = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {system = platform;};
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pkgs = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {system = platform;};
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pkgsDiet = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {
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system = platform;
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bootStdenv = pkgs.useDietLibC pkgs.stdenv;
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};
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pkgsStatic = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix" {
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system = platform;
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bootStdenv = pkgs.makeStaticBinaries pkgs.stdenv;
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};
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stdenvLinuxStuff = import "${nixpkgsPath}/pkgs/stdenv/linux" {
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system = pkgs.stdenv.system;
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allPackages = import "${nixpkgsPath}/pkgs/top-level/all-packages.nix";
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};
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manifests = config.installer.manifests; # exported here because nixos-rebuild uses it
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manifests = config.installer.manifests; # exported here because nixos-rebuild uses it
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nix = config.environment.nix pkgs;
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nix = config.environment.nix pkgs;
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@ -50,11 +35,6 @@ rec {
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kernel = kernelPackages.kernel;
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kernel = kernelPackages.kernel;
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rootModules =
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config.boot.initrd.extraKernelModules ++
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config.boot.initrd.kernelModules;
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# Tree of kernel modules. This includes the kernel, plus modules
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# Tree of kernel modules. This includes the kernel, plus modules
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# built outside of the kernel. We have to combine these into a
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# built outside of the kernel. We have to combine these into a
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@ -69,84 +49,13 @@ rec {
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++ config.boot.extraModulePackages pkgs
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++ config.boot.extraModulePackages pkgs
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);
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);
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# Determine the set of modules that we need to mount the root FS.
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# The initial ramdisk.
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modulesClosure = pkgs.makeModulesClosure {
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initialRamdiskStuff = import ../boot/boot-stage-1.nix {
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inherit rootModules;
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inherit pkgs config nixpkgsPath kernelPackages modulesTree;
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kernel = modulesTree;
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allowMissing = config.boot.initrd.allowMissing;
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};
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};
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initialRamdisk = initialRamdiskStuff.initialRamdisk;
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# Some additional utilities needed in stage 1, notably mount. We
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# don't want to bring in all of util-linux, so we just copy what we
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# need.
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extraUtils = pkgs.runCommand "extra-utils"
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{ buildInputs = [pkgs.nukeReferences];
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inherit (pkgsStatic) utillinux;
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inherit (pkgsDiet) udev;
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e2fsprogs = pkgs.e2fsprogsDiet;
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devicemapper = if config.boot.initrd.lvm then pkgs.devicemapperStatic else null;
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lvm2 = if config.boot.initrd.lvm then pkgs.lvm2Static else null;
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allowedReferences = []; # prevent accidents like glibc being included in the initrd
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}
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''
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ensureDir $out/bin
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if test -n "$devicemapper"; then
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cp $devicemapper/sbin/dmsetup.static $out/bin/dmsetup
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cp $lvm2/sbin/lvm.static $out/bin/lvm
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fi
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cp $utillinux/bin/mount $utillinux/bin/umount $utillinux/sbin/pivot_root $out/bin
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cp -p $e2fsprogs/sbin/fsck* $e2fsprogs/sbin/e2fsck $out/bin
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cp $udev/sbin/udevd $udev/sbin/udevadm $out/bin
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nuke-refs $out/bin/*
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''; # */
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# The init script of boot stage 1 (loading kernel modules for
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# mounting the root FS).
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bootStage1 = import ../boot/boot-stage-1.nix {
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inherit (pkgs) substituteAll;
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inherit extraUtils modulesClosure;
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inherit (kernelPackages) klibcShrunk;
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inherit (config.boot) autoDetectRootDevice isLiveCD;
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fileSystems =
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pkgs.lib.filter
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(fs: fs.mountPoint == "/" || (fs ? neededForBoot && fs.neededForBoot))
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config.fileSystems;
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rootLabel = config.boot.rootLabel;
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staticShell = stdenvLinuxStuff.bootstrapTools.bash;
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resumeDevice = config.boot.resumeDevice;
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};
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# The closure of the init script of boot stage 1 is what we put in
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# the initial RAM disk.
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initialRamdisk = pkgs.makeInitrd {
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contents = [
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{ object = bootStage1;
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symlink = "/init";
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}
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] ++
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pkgs.lib.optionals
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(config.boot.initrd.enableSplashScreen && kernelPackages.splashutils != null)
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[
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{ object = pkgs.runCommand "splashutils" {allowedReferences = []; buildInputs = [pkgs.nukeReferences];} ''
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ensureDir $out/bin
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cp ${kernelPackages.splashutils}/${kernelPackages.splashutils.helperName} $out/bin/splash_helper
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nuke-refs $out/bin/*
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'';
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suffix = "/bin/splash_helper";
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symlink = "/${kernelPackages.splashutils.helperName}";
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} # */
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{ object = import ../helpers/unpack-theme.nix {
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inherit (pkgs) stdenv;
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theme = config.services.ttyBackgrounds.defaultTheme;
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};
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symlink = "/etc/splash";
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}
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];
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};
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# NixOS installation/updating tools.
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# NixOS installation/updating tools.
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Reference in New Issue
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