125 lines
4 KiB
Bash
125 lines
4 KiB
Bash
#! @bash@/bin/sh -e
|
|
|
|
shopt -s nullglob
|
|
|
|
export PATH=/empty
|
|
for i in @path@; do PATH=$PATH:$i/bin:$i/sbin; done
|
|
|
|
default=$1
|
|
if test -z "$1"; then
|
|
echo "Syntax: efi-boot-stub-builder.sh <DEFAULT-CONFIG>"
|
|
exit 1
|
|
fi
|
|
|
|
echo "updating the efi system partition..."
|
|
|
|
# Convert a path to a file in the Nix store such as
|
|
# /nix/store/<hash>-<name>/file to <hash>-<name>-<file>.
|
|
# Also, efi executables need the .efi extension
|
|
cleanName() {
|
|
local path="$1"
|
|
echo "$path" | sed 's|^/nix/store/||' | sed 's|/|-|g' | sed 's|@kernelFile@$|@kernelFile@.efi|'
|
|
}
|
|
|
|
# Copy a file from the Nix store to the EFI system partition
|
|
declare -A filesCopied
|
|
|
|
copyToKernelsDir() {
|
|
local src="$1"
|
|
local dst="@efiSysMountPoint@/efi/nixos/$(cleanName $src)"
|
|
# Don't copy the file if $dst already exists. This means that we
|
|
# have to create $dst atomically to prevent partially copied
|
|
# kernels or initrd if this script is ever interrupted.
|
|
if ! test -e $dst; then
|
|
local dstTmp=$dst.tmp.$$
|
|
cp $src $dstTmp
|
|
mv $dstTmp $dst
|
|
fi
|
|
filesCopied[$dst]=1
|
|
result=$dst
|
|
}
|
|
|
|
# Copy its kernel, initrd, and startup script to the efi system partition
|
|
# Add the efibootmgr entry if requested
|
|
addEntry() {
|
|
local path="$1"
|
|
local generation="$2"
|
|
|
|
if ! test -e $path/kernel -a -e $path/initrd; then
|
|
return
|
|
fi
|
|
|
|
local kernel=$(readlink -f $path/kernel)
|
|
local initrd=$(readlink -f $path/initrd)
|
|
copyToKernelsDir $kernel; kernel=$result
|
|
copyToKernelsDir $initrd; initrd=$result
|
|
|
|
local startup="@efiSysMountPoint@/efi/nixos/generation-$generation-startup.nsh"
|
|
if ! test -e $startup; then
|
|
local dstTmp=$startup.tmp.$$
|
|
echo "$(echo $kernel | sed 's|@efiSysMountPoint@||' | sed 's|/|\\|g') systemConfig=$(readlink -f $path) init=$(readlink -f $path/init) initrd=$(echo $initrd | sed 's|@efiSysMountPoint@||' | sed 's|/|\\|g') $(cat $path/kernel-params)" > $dstTmp
|
|
mv $dstTmp $startup
|
|
fi
|
|
filesCopied[$startup]=1
|
|
|
|
if test -n "@runEfibootmgr@"; then
|
|
set +e
|
|
efibootmgr -c -d "@efiDisk@" -g -l $(echo $kernel | sed 's|@efiSysMountPoint@||' | sed 's|/|\\|g') -L "NixOS $generation Generation" -p "@efiPartition@" \
|
|
-u systemConfig=$(readlink -f $path) init=$(readlink -f $path/init) initrd=$(echo $initrd | sed 's|@efiSysMountPoint@||' | sed 's|/|\\|g') $(cat $path/kernel-params) > /dev/null 2>&1
|
|
set -e
|
|
fi
|
|
|
|
if test $(readlink -f "$path") = "$default"; then
|
|
if test -n "@runEfibootmgr@"; then
|
|
set +e
|
|
defaultbootnum=$(efibootmgr | grep "NixOS $generation Generation" | sed 's/Boot//' | sed 's/\*.*//')
|
|
set -e
|
|
fi
|
|
|
|
if test -n "@installRemovableMediaImage@"; then
|
|
mkdir -pv "@efiSysMountPoint@"/efi/boot
|
|
cp $kernel "@efiSysMountPoint@"/efi/boot/boot"@targetArch@".efi
|
|
sed 's|.*@kernelFile@.efi ||' $startup > "@efiSysMountPoint@"/efi/boot/linux.conf
|
|
fi
|
|
if test -n "@installStartupNsh@"; then
|
|
sed 's|.*@kernelFile@.efi|@kernelFile@.efi|' < $startup > "@efiSysMountPoint@/startup.nsh"
|
|
cp $kernel "@efiSysMountPoint@/@kernelFile@.efi"
|
|
fi
|
|
fi
|
|
}
|
|
|
|
mkdir -p "@efiSysMountPoint@/efi/nixos/"
|
|
|
|
# Remove all old boot manager entries
|
|
if test -n "@runEfibootmgr@"; then
|
|
set +e
|
|
modprobe efivars > /dev/null 2>&1
|
|
for bootnum in $(efibootmgr | grep "NixOS" | grep "Generation" | sed 's/Boot//' | sed 's/\*.*//'); do
|
|
efibootmgr -B -b "$bootnum" > /dev/null 2>&1
|
|
done
|
|
set -e
|
|
fi
|
|
|
|
# Add all generations of the system profile to the system partition, in reverse
|
|
# (most recent to least recent) order.
|
|
for generation in $(
|
|
(cd /nix/var/nix/profiles && ls -d system-*-link) \
|
|
| sed 's/system-\([0-9]\+\)-link/\1/' \
|
|
| sort -n -r); do
|
|
link=/nix/var/nix/profiles/system-$generation-link
|
|
addEntry $link $generation
|
|
done
|
|
|
|
if test -n "@runEfibootmgr@"; then
|
|
set +e
|
|
efibootmgr -o $defaultbootnum > /dev/null 2>&1
|
|
set -e
|
|
fi
|
|
|
|
# Remove obsolete files from the EFI system partition
|
|
for fn in "@efiSysMountPoint@/efi/nixos/"*; do
|
|
if ! test "${filesCopied[$fn]}" = 1; then
|
|
rm -vf -- "$fn"
|
|
fi
|
|
done
|