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