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https://github.com/NixOS/nixpkgs.git
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357ca60ed7
the advantage that KDE applications work when logging in via ssh, and that you don't need to logout to have KDE upgrades take effect. On the downside, since the various KDE packages and shared-mime-info all have their own MIME databases, if we put them in one symlink tree (systemPath), we need to rerun update-mime-database on the symlink tree. Also, systemPath is getting very large. svn path=/nixos/branches/fix-style/; revision=14191
329 lines
10 KiB
Nix
329 lines
10 KiB
Nix
# this file contains all extendable options originally defined in system.nix
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# TODO: split it to make it readable.
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{pkgs, config, ...}:
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###### interface
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let
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inherit (pkgs.lib) mkOption;
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option = {
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system = {
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build = mkOption {
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default = {};
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description = ''
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Attribute set of derivation used to setup the system. The system
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is built by aggregating all derivations.
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'';
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apply = components: components // {
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# all components have to build directories
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result = pkgs.buildEnv {
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name = "system";
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paths = pkgs.lib.mapRecordFlatten (n: v: v) components;
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};
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};
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};
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shell = mkOption {
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default = "/var/run/current-system/sw/bin/bash";
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description = ''
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You should not redefine this option unless you want to change the
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bash version for security issues.
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'';
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merge = list:
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assert list != [] && builtins.tail list == [];
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builtins.head list;
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};
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wrapperDir = mkOption {
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default = "/var/setuid-wrappers";
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description = ''
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You should not redefine this option unless you want to change the
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path for security issues.
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'';
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};
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overridePath = mkOption {
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default = [];
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description = ''
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You should not redefine this option unless you have trouble with a
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package define in <varname>path</varname>.
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'';
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};
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path = mkOption {
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default = [];
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description = ''
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The packages you want in the boot environment.
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'';
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apply = list: pkgs.buildEnv {
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name = "system-path";
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paths = config.system.overridePath ++ list;
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# Note: We need `/lib' to be among `pathsToLink' for NSS modules
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# to work.
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inherit (config.environment) pathsToLink;
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ignoreCollisions = true;
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# TODO: move this to upstart-jobs/xserver/desktopManager/kde4.nix
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postBuild =
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if config.services.xserver.desktopManager.kde4.enable then
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# Rebuild the MIME database. Otherwise KDE won't be able to
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# find many MIME types.
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''
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${pkgs.shared_mime_info}/bin/update-mime-database $out/share/mime
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''
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else "";
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};
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};
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};
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};
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in
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###### implementation
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let
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inherit (pkgs.stringsWithDeps) noDepEntry FullDepEntry PackEntry;
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inherit (pkgs.lib) mapRecordFlatten;
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activateLib = config.system.activationScripts.lib;
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in
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{
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require = [
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option
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# config.system.activationScripts
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(import ../system/activate-configuration.nix)
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];
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system = {
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build = {
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binsh = pkgs.bashInteractive;
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};
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activationScripts = {
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systemConfig = noDepEntry ''
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systemConfig="$1"
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if test -z "$systemConfig"; then
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systemConfig="/system" # for the installation CD
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fi
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'';
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defaultPath =
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let path = [
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pkgs.coreutils pkgs.gnugrep pkgs.findutils
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pkgs.glibc # needed for getent
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pkgs.pwdutils
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]; in noDepEntry ''
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export PATH=/empty
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for i in ${toString path}; do
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PATH=$PATH:$i/bin:$i/sbin;
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done
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'';
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stdio = FullDepEntry ''
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# Needed by some programs.
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ln -sfn /proc/self/fd /dev/fd
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ln -sfn /proc/self/fd/0 /dev/stdin
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ln -sfn /proc/self/fd/1 /dev/stdout
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ln -sfn /proc/self/fd/2 /dev/stderr
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'' [
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activateLib.defaultPath # path to ln
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];
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binsh = FullDepEntry ''
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# Create the required /bin/sh symlink; otherwise lots of things
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# (notably the system() function) won't work.
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mkdir -m 0755 -p $mountPoint/bin
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ln -sfn ${config.system.build.binsh}/bin/sh $mountPoint/bin/sh
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'' [
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activateLib.defaultPath # path to ln & mkdir
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activateLib.stdio # ?
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];
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modprobe = FullDepEntry ''
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# Allow the kernel to find our wrapped modprobe (which searches in the
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# right location in the Nix store for kernel modules). We need this
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# when the kernel (or some module) auto-loads a module.
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# !!! maybe this should only happen at boot time, since we shouldn't
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# use modules that don't match the running kernel.
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echo ${config.system.sbin.modprobe}/sbin/modprobe > /proc/sys/kernel/modprobe
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'' [
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# ?
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];
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var = FullDepEntry ''
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# Various log/runtime directories.
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mkdir -m 0755 -p /var/run
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mkdir -m 0755 -p /var/run/console # for pam_console
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touch /var/run/utmp # must exist
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chmod 644 /var/run/utmp
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mkdir -m 0755 -p /var/run/nix/current-load # for distributed builds
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mkdir -m 0700 -p /var/run/nix/remote-stores
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mkdir -m 0755 -p /var/log
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touch /var/log/wtmp # must exist
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chmod 644 /var/log/wtmp
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touch /var/log/lastlog
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chmod 644 /var/log/lastlog
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mkdir -m 1777 -p /var/tmp
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# Empty, read-only home directory of many system accounts.
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mkdir -m 0555 -p /var/empty
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'' [
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activateLib.defaultPath # path to mkdir & touch & chmod
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];
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rootPasswd = FullDepEntry ''
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# If there is no password file yet, create a root account with an
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# empty password.
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if ! test -e /etc/passwd; then
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rootHome=/root
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touch /etc/passwd; chmod 0644 /etc/passwd
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touch /etc/group; chmod 0644 /etc/group
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touch /etc/shadow; chmod 0600 /etc/shadow
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# Can't use useradd, since it complains that it doesn't know us
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# (bootstrap problem!).
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echo "root:x:0:0:System administrator:$rootHome:${config.system.shell}" >> /etc/passwd
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echo "root::::::::" >> /etc/shadow
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echo | passwd --stdin root
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fi
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'' [
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activateLib.defaultPath # path to touch & passwd
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activateLib.etc # for /etc
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# ?
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];
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nix = FullDepEntry ''
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# Set up Nix.
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mkdir -p /nix/etc/nix
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ln -sfn /etc/nix.conf /nix/etc/nix/nix.conf
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chown root.nixbld /nix/store
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chmod 1775 /nix/store
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# Nix initialisation.
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mkdir -m 0755 -p \
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/nix/var/nix/gcroots \
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/nix/var/nix/temproots \
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/nix/var/nix/manifests \
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/nix/var/nix/userpool \
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/nix/var/nix/profiles \
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/nix/var/nix/db \
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/nix/var/log/nix/drvs \
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/nix/var/nix/channel-cache \
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/nix/var/nix/chroots
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mkdir -m 1777 -p /nix/var/nix/gcroots/per-user
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mkdir -m 1777 -p /nix/var/nix/profiles/per-user
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ln -sf /nix/var/nix/profiles /nix/var/nix/gcroots/
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ln -sf /nix/var/nix/manifests /nix/var/nix/gcroots/
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'' [
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activateLib.defaultPath
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activateLib.etc # /etc/nix.conf
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activateLib.users # nixbld group
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];
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path = FullDepEntry ''
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PATH=${config.system.path}/bin:${config.system.path}/sbin:$PATH
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'' [
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activateLib.defaultPath
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];
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setuid =
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let
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setuidPrograms = builtins.toString (
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config.security.setuidPrograms ++
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config.security.extraSetuidPrograms ++
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map (x: x.program) config.security.setuidOwners
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);
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adjustSetuidOwner = pkgs.lib.concatStrings (map
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(_entry: let entry = {
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owner = "nobody";
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group = "nogroup";
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setuid = false;
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setgid = false;
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} //_entry; in
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''
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chown ${entry.owner}.${entry.group} $wrapperDir/${entry.program}
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chmod u${if entry.setuid then "+" else "-"}s $wrapperDir/${entry.program}
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chmod g${if entry.setgid then "+" else "-"}s $wrapperDir/${entry.program}
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'')
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config.security.setuidOwners);
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in FullDepEntry ''
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# Make a few setuid programs work.
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save_PATH="$PATH"
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# Add the default profile to the search path for setuid executables.
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PATH="/nix/var/nix/profiles/default/sbin:$PATH"
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PATH="/nix/var/nix/profiles/default/bin:$PATH"
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wrapperDir=${config.system.wrapperDir}
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if test -d $wrapperDir; then rm -f $wrapperDir/*; fi # */
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mkdir -p $wrapperDir
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for i in ${setuidPrograms}; do
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program=$(type -tp $i)
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if test -z "$program"; then
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# XXX: It would be preferable to detect this problem before
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# `activate-configuration' is invoked.
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#echo "WARNING: No executable named \`$i' was found" >&2
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#echo "WARNING: but \`$i' was specified as a setuid program." >&2
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true
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else
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cp "$(type -tp setuid-wrapper)" $wrapperDir/$i
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echo -n "$program" > $wrapperDir/$i.real
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chown root.root $wrapperDir/$i
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chmod 4755 $wrapperDir/$i
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fi
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done
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${adjustSetuidOwner}
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PATH="$save_PATH"
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'' [
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activateLib.path
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activateLib.users
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];
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hostname = FullDepEntry ''
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# Set the host name. Don't clear it if it's not configured in the
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# NixOS configuration, since it may have been set by dhclient in the
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# meantime.
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${if config.networking.hostName != "" then
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''hostname "${config.networking.hostName}"''
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else ''
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# dhclient won't do anything if the hostname isn't empty.
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if test "$(hostname)" = "(none)"; then
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hostname ""
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fi
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''}
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'' [
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activateLib.path
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];
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# The activation have to be done at the end. Therefore, this entry
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# depends on all scripts declared in the activation library.
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activate = FullDepEntry ''
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# Make this configuration the current configuration.
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# The readlink is there to ensure that when $systemConfig = /system
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# (which is a symlink to the store), /var/run/current-system is still
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# used as a garbage collection root.
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ln -sfn "$(readlink -f "$systemConfig")" /var/run/current-system
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# Prevent the current configuration from being garbage-collected.
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ln -sfn /var/run/current-system /nix/var/nix/gcroots/current-system
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'' (mapRecordFlatten (a: v: v)
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# should be removed if this does not cause an infinite recursion.
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(activateLib // { activate = { text = ""; deps = []; }; })
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);
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};
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};
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}
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