mirror of
https://github.com/NixOS/nixpkgs.git
synced 2025-07-02 22:10:08 +03:00
b82c253b24
The patch is currently being discussed on LKML and hopefully will be included in mainline in some form in the future. Note that booting from the livecd has to do a lot of work before anything is output to the console, so if the drive is still busy don't assume the boot has hanged svn path=/nixos/trunk/; revision=33235
124 lines
4 KiB
Bash
124 lines
4 KiB
Bash
#! @bash@/bin/sh -e
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shopt -s nullglob
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export PATH=/empty
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for i in @path@; do PATH=$PATH:$i/bin:$i/sbin; done
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default=$1
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if test -z "$1"; then
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echo "Syntax: efi-boot-stub-builder.sh <DEFAULT-CONFIG>"
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exit 1
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fi
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echo "updating the efi system partition..."
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# Convert a path to a file in the Nix store such as
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# /nix/store/<hash>-<name>/file to <hash>-<name>-<file>.
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# Also, efi executables need the .efi extension
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cleanName() {
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local path="$1"
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echo "$path" | sed 's|^/nix/store/||' | sed 's|/|-|g' | sed 's|@kernelFile@$|@kernelFile@.efi|'
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}
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# Copy a file from the Nix store to the EFI system partition
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declare -A filesCopied
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copyToKernelsDir() {
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local src="$1"
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local dst="@efiSysMountPoint@/efi/nixos/$(cleanName $src)"
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# Don't copy the file if $dst already exists. This means that we
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# have to create $dst atomically to prevent partially copied
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# kernels or initrd if this script is ever interrupted.
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if ! test -e $dst; then
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local dstTmp=$dst.tmp.$$
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cp $src $dstTmp
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mv $dstTmp $dst
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fi
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filesCopied[$dst]=1
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result=$dst
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}
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# Copy its kernel, initrd, and startup script to the efi system partition
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# Add the efibootmgr entry if requested
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addEntry() {
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local path="$1"
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local generation="$2"
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if ! test -e $path/kernel -a -e $path/initrd; then
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return
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fi
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local kernel=$(readlink -f $path/kernel)
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local initrd=$(readlink -f $path/initrd)
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copyToKernelsDir $kernel; kernel=$result
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copyToKernelsDir $initrd; initrd=$result
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local startup="@efiSysMountPoint@/efi/nixos/$(cleanName $(readlink -f $path))-startup.nsh"
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if ! test -e $startup; then
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local dstTmp=$startup.tmp.$$
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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
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mv $dstTmp $startup
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fi
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filesCopied[$startup]=1
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if test -n "@runEfibootmgr@"; then
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set +e
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efibootmgr -c -d "@efiDisk@" -g -l $(echo $kernel | sed 's|@efiSysMountPoint@||' | sed 's|/|\\|g') -L "NixOS $generation Generation" -p "@efiPartition@" \
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-u systemConfig=$(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
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set -e
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fi
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if test $(readlink -f "$path") = "$default"; then
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if test -n "@runEfibootmgr@"; then
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set +e
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defaultbootnum=$(efibootmgr | grep "NixOS $generation Generation" | sed 's/Boot//' | sed 's/\*.*//')
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set -e
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fi
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if test -n "@installRemovableMediaImage@"; then
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mkdir -pv "@efiSysMountPoint@"/efi/boot
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cp $kernel "@efiSysMountPoint@"/efi/boot/boot"@targetArch@".efi
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sed 's|.*@kernelFile@.efi ||' $startup > "@efiSysMountPoint@"/efi/boot/linux.conf
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fi
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if test -n "@installStartupNsh@"; then
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sed 's|.*@kernelFile@.efi|@kernelFile@.efi|' < $startup > "@efiSysMountPoint@/startup.nsh"
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cp $kernel "@efiSysMountPoint@/@kernelFile@.efi"
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fi
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fi
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}
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mkdir -p "@efiSysMountPoint@/efi/nixos/"
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# Remove all old boot manager entries
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if test -n "@runEfibootmgr@"; then
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set +e
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modprobe efivars
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for bootnum in $(efibootmgr | grep "NixOS" | grep "Generation" | sed 's/Boot//' | sed 's/\*.*//'); do
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efibootmgr -B -b "$bootnum" > /dev/null 2>&1
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done
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set -e
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fi
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# Add all generations of the system profile to the system partition, in reverse
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# (most recent to least recent) order.
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for generation in $(
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(cd /nix/var/nix/profiles && ls -d system-*-link) \
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| sed 's/system-\([0-9]\+\)-link/\1/' \
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| sort -n -r); do
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link=/nix/var/nix/profiles/system-$generation-link
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addEntry $link $generation
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done
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if test -n "@runEfibootmgr@"; then
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set +e
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efibootmgr -o $defaultbootnum > /dev/null 2>&1
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set -e
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fi
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# Remove obsolete files from the EFI system partition
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for fn in "@efiSysMountPoint@/efi/nixos/"*; do
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if ! test "${filesCopied[$fn]}" = 1; then
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rm -vf -- "$fn"
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fi
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done
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