public/nixpkgs
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Revert "Revert "Merge pull request #2449 from wkennington/master.grub""

Browse Source 
This reverts commit 94205f5f21.

Conflicts:
	nixos/modules/system/boot/loader/grub/install-grub.pl
This commit is contained in:
William A. Kennington III
2014-09-02 09:16:13 -07:00
parent af4c369d0a
commit 36614ff3e2
11 changed files with 223 additions and 65 deletions
Download Patch File Download Diff File Expand all files Collapse all files
nixos/modules/system/boot/loader/grub/grub.nix
+28 -9
View File
@@ -6,7 +6,8 @@ let
cfg = config.boot.loader.grub;
realGrub = if cfg.version == 1 then pkgs.grub else pkgs.grub2;
realGrub = if cfg.version == 1 then pkgs.grub
else pkgs.grub2.override { zfsSupport = cfg.zfsSupport; };
grub =
# Don't include GRUB if we're only generating a GRUB menu (e.g.,
@@ -25,11 +26,12 @@ let
inherit (cfg)
version extraConfig extraPerEntryConfig extraEntries
extraEntriesBeforeNixOS extraPrepareConfig configurationLimit copyKernels timeout
default devices explicitBootRoot;
default devices fsIdentifier;
path = (makeSearchPath "bin" [
pkgs.coreutils pkgs.gnused pkgs.gnugrep pkgs.findutils pkgs.diffutils
pkgs.coreutils pkgs.gnused pkgs.gnugrep pkgs.findutils pkgs.diffutils pkgs.btrfsProgs
pkgs.utillinux
]) + ":" + (makeSearchPath "sbin" [
pkgs.mdadm
pkgs.mdadm pkgs.utillinux
]);
});
@@ -209,12 +211,26 @@ in
'';
};
explicitBootRoot = mkOption {
default = "";
type = types.str;
fsIdentifier = mkOption {
default = "uuid";
type = types.addCheck types.str
(type: type == "uuid" || type == "label" || type == "provided");
description = ''
The relative path of /boot within the parent volume. Leave empty
if /boot is not a btrfs subvolume.
Determines how grub will identify devices when generating the
configuration file. A value of uuid / label signifies that grub
will always resolve the uuid or label of the device before using
it in the configuration. A value of provided means that grub will
use the device name as show in <command>df</command> or
<command>mount</command>. Note, zfs zpools / datasets are ignored
and will always be mounted using their labels.
'';
};
zfsSupport = mkOption {
default = false;
type = types.bool;
description = ''
Whether grub should be build against libzfs.
'';
};
@@ -260,6 +276,9 @@ in
${pkgs.coreutils}/bin/cp -pf "${v}" "/boot/${n}"
'') config.boot.loader.grub.extraFiles);
assertions = [{ assertion = !cfg.zfsSupport || cfg.version == 2;
message = "Only grub version 2 provides zfs support";}];
})
];
nixos/modules/system/boot/loader/grub/install-grub.pl
+117 -18
View File
@@ -1,5 +1,6 @@
use strict;
use warnings;
use Class::Struct;
use XML::LibXML;
use File::Basename;
use File::Path;
@@ -27,6 +28,14 @@ sub writeFile {
close FILE or die;
}
sub runCommand {
my ($cmd) = @_;
open FILE, "$cmd 2>/dev/null |" or die "Failed to execute: $cmd\n";
my @ret = <FILE>;
close FILE;
return ($?, @ret);
}
my $grub = get("grub");
my $grubVersion = int(get("version"));
my $extraConfig = get("extraConfig");
@@ -39,7 +48,7 @@ my $configurationLimit = int(get("configurationLimit"));
my $copyKernels = get("copyKernels") eq "true";
my $timeout = int(get("timeout"));
my $defaultEntry = int(get("default"));
my $explicitBootRoot = get("explicitBootRoot");
my $fsIdentifier = get("fsIdentifier");
$ENV{'PATH'} = get("path");
die "unsupported GRUB version\n" if $grubVersion != 1 && $grubVersion != 2;
@@ -48,22 +57,108 @@ print STDERR "updating GRUB $grubVersion menu...\n";
mkpath("/boot/grub", 0, 0700);
# Discover whether /boot is on the same filesystem as / and
# /nix/store. If not, then all kernels and initrds must be copied to
# /boot, and all paths in the GRUB config file must be relative to the
# root of the /boot filesystem. `$bootRoot' is the path to be
# prepended to paths under /boot.
my $bootRoot = "/boot";
if (stat("/")->dev != stat("/boot")->dev) {
$bootRoot = "";
$copyKernels = 1;
} elsif (stat("/boot")->dev != stat("/nix/store")->dev) {
# /boot.
if (stat("/boot")->dev != stat("/nix/store")->dev) {
$copyKernels = 1;
}
if ($explicitBootRoot ne "") {
$bootRoot = $explicitBootRoot;
# Discover information about the location of /boot
struct(Fs => {
device => '$',
type => '$',
mount => '$',
});
sub GetFs {
my ($dir) = @_;
my ($status, @dfOut) = runCommand("df -T $dir");
if ($status != 0 || $#dfOut != 1) {
die "Failed to retrieve output about $dir from `df`";
}
my @boot = split(/[ \n\t]+/, $dfOut[1]);
return Fs->new(device => $boot[0], type => $boot[1], mount => $boot[6]);
}
struct (Grub => {
path => '$',
search => '$',
});
my $driveid = 1;
sub GrubFs {
my ($dir) = @_;
my $fs = GetFs($dir);
my $path = "/" . substr($dir, length($fs->mount));
my $search = "";
if ($grubVersion > 1) {
# ZFS is completely separate logic as zpools are always identified by a label
# or custom UUID
if ($fs->type eq 'zfs') {
my $sid = index($fs->device, '/');
if ($sid < 0) {
$search = '--label ' . $fs->device;
$path = '/@' . $path;
} else {
$search = '--label ' . substr($fs->device, 0, $sid);
$path = '/' . substr($fs->device, $sid) . '/@' . $path;
}
} else {
my %types = ('uuid' => '--fs-uuid', 'label' => '--label');
if ($fsIdentifier eq 'provided') {
# If the provided dev is identifying the partition using a label or uuid,
# we should get the label / uuid and do a proper search
my @matches = $fs->device =~ m/\/dev\/disk\/by-(label|uuid)\/(.*)/;
if ($#matches > 1) {
die "Too many matched devices"
} elsif ($#matches == 1) {
$search = "$types{$matches[0]} $matches[1]"
}
} else {
# Determine the identifying type
$search = $types{$fsIdentifier} . ' ';
# Based on the type pull in the identifier from the system
my ($status, @devInfo) = runCommand("blkid -o export @{[$fs->device]}");
if ($status != 0) {
die "Failed to get blkid info for @{[$fs->device]}";
}
my @matches = join("", @devInfo) =~ m/@{[uc $fsIdentifier]}=([^\n]*)/;
if ($#matches != 0) {
die "Couldn't find a $types{$fsIdentifier} for @{[$fs->device]}\n"
}
$search .= $matches[0];
}
# BTRFS is a special case in that we need to fix the referrenced path based on subvolumes
if ($fs->type eq 'btrfs') {
my ($status, @info) = runCommand("btrfs subvol show @{[$fs->mount]}");
if ($status != 0) {
die "Failed to retreive subvolume info for @{[$fs->mount]}";
}
my @subvols = join("", @info) =~ m/Name:[ \t\n]*([^ \t\n]*)/;
if ($#subvols > 0) {
die "Btrfs subvol name for @{[$fs->device]} listed multiple times in mount\n"
} elsif ($#subvols == 0) {
$path = "/$subvols[0]$path";
}
}
}
if (not $search eq "") {
$search = "search --set=drive$driveid " . $search;
$path = "(\$drive$driveid)$path";
$driveid += 1;
}
}
return Grub->new(path => $path, search => $search);
}
my $grubBoot = GrubFs("/boot");
my $grubStore = GrubFs("/nix");
# We don't need to copy if we can read the kernels directly
if ($grubStore->search ne "") {
$copyKernels = 0;
}
# Generate the header.
@@ -76,12 +171,14 @@ if ($grubVersion == 1) {
";
if ($splashImage) {
copy $splashImage, "/boot/background.xpm.gz" or die "cannot copy $splashImage to /boot\n";
$conf .= "splashimage $bootRoot/background.xpm.gz\n";
$conf .= "splashimage " . $grubBoot->path . "/background.xpm.gz\n";
}
}
else {
$conf .= "
" . $grubBoot->search . "
" . $grubStore->search . "
if [ -s \$prefix/grubenv ]; then
load_env
fi
@@ -102,7 +199,7 @@ else {
set timeout=$timeout
fi
if loadfont $bootRoot/grub/fonts/unicode.pf2; then
if loadfont " . $grubBoot->path . "/grub/fonts/unicode.pf2; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
@@ -116,7 +213,7 @@ else {
copy $splashImage, "/boot/background.png" or die "cannot copy $splashImage to /boot\n";
$conf .= "
insmod png
if background_image $bootRoot/background.png; then
if background_image " . $grubBoot->path . "/background.png; then
set color_normal=white/black
set color_highlight=black/white
else
@@ -138,7 +235,7 @@ mkpath("/boot/kernels", 0, 0755) if $copyKernels;
sub copyToKernelsDir {
my ($path) = @_;
return $path unless $copyKernels;
return $grubStore->path . substr($path, length("/nix")) unless $copyKernels;
$path =~ /\/nix\/store\/(.*)/ or die;
my $name = $1; $name =~ s/\//-/g;
my $dst = "/boot/kernels/$name";
@@ -151,7 +248,7 @@ sub copyToKernelsDir {
rename $tmp, $dst or die "cannot rename $tmp to $dst\n";
}
$copied{$dst} = 1;
return "$bootRoot/kernels/$name";
return $grubBoot->path . "/kernels/$name";
}
sub addEntry {
@@ -178,6 +275,8 @@ sub addEntry {
$conf .= " " . ($xen ? "module" : "initrd") . " $initrd\n\n";
} else {
$conf .= "menuentry \"$name\" {\n";
$conf .= $grubBoot->search . "\n";
$conf .= $grubStore->search . "\n";
$conf .= " $extraPerEntryConfig\n" if $extraPerEntryConfig;
$conf .= " multiboot $xen $xenParams\n" if $xen;
$conf .= " " . ($xen ? "module" : "linux") . " $kernel $kernelParams\n";
@@ -195,7 +294,7 @@ addEntry("NixOS - Default", $defaultConfig);
$conf .= "$extraEntries\n" unless $extraEntriesBeforeNixOS;
# extraEntries could refer to @bootRoot@, which we have to substitute
$conf =~ s/\@bootRoot\@/$bootRoot/g;
$conf =~ s/\@bootRoot\@/$grubBoot->path/g;
# Emit submenus for all system profiles.
sub addProfile {