mirror of
https://github.com/NixOS/nixpkgs.git
synced 2024-12-11 15:15:36 +00:00
90 lines
2 KiB
Bash
90 lines
2 KiB
Bash
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#! @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; done
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if test $# -ne 1; then
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echo "Usage: grub-menu-builder.sh DEFAULT-CONFIG"
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exit 1
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fi
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defaultConfig="$1"
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[ "$(stat -f -c '%i' /)" = "$(stat -f -c '%i' /boot)" ] || {
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# see grub-menu-builder.sh
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echo "WARNING: /boot being on a different filesystem not supported by init-script-builder.sh"
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}
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target="/sbin/init"
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targetOther="/boot/init-other-configurations-contents.txt"
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tmp="$target.tmp"
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tmpOther="$targetOther.tmp"
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configurationCounter=0
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numAlienEntries=`cat <<EOF | egrep '^[[:space:]]*title' | wc -l
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@extraEntries@
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EOF`
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# Add an entry to $targetOther
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addEntry() {
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local name="$1"
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local path="$2"
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local shortSuffix="$3"
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configurationCounter=$((configurationCounter + 1))
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local stage2=$(readlink $path/init)
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content="$(
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echo "#!/bin/sh"
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echo "# $name"
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echo "# created by init-script-builder.sh"
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echo "export systemConfig=$(readlink -f $path)"
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echo "exec $stage2"
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)"
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[ "$path" != "$defaultConfig" ] || {
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echo "$content" > $tmp
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echo "# older configurations: $targetOther" >> $tmp
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chmod +x $tmp
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}
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echo -e "$content\n\n" >> $tmpOther
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}
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mkdir -p /boot /sbin
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addEntry "NixOS - Default" $defaultConfig ""
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# Add all generations of the system profile to the menu, in reverse
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# (most recent to least recent) order.
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for link in $((ls -d $defaultConfig/fine-tune/* ) | sort -n); do
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date=$(stat --printf="%y\n" $link | sed 's/\..*//')
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addEntry "NixOS - variation" $link ""
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done
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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-$generation-link
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date=$(stat --printf="%y\n" $link | sed 's/\..*//')
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kernelVersion=$(cd $(dirname $(readlink -f $link/kernel))/lib/modules && echo *)
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addEntry "NixOS - Configuration $generation ($date - $kernelVersion)" $link "$generation ($date)"
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done
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mv $tmpOther $targetOther
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mv $tmp $target
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