pyrox.dev
1#! @bash@/bin/sh -e
2
3shopt -s nullglob
4
5export PATH=/empty
6for i in @path@; do PATH=$PATH:$i/bin; done
7
8if test $# -ne 1; then
9 echo "Usage: init-script-builder.sh DEFAULT-CONFIG"
10 exit 1
11fi
12
13defaultConfig="$1"
14
15
16[ "$(stat -f -c '%i' /)" = "$(stat -f -c '%i' /boot)" ] || {
17 # see grub-menu-builder.sh
18 echo "WARNING: /boot being on a different filesystem not supported by init-script-builder.sh"
19}
20
21
22
23target="/sbin/init"
24targetOther="/boot/init-other-configurations-contents.txt"
25
26tmp="$target.tmp"
27tmpOther="$targetOther.tmp"
28
29
30configurationCounter=0
31numAlienEntries=`cat <<EOF | egrep '^[[:space:]]*title' | wc -l
32@extraEntries@
33EOF`
34
35
36
37
38# Add an entry to $targetOther
39addEntry() {
40 local name="$1"
41 local path="$2"
42 local shortSuffix="$3"
43
44 configurationCounter=$((configurationCounter + 1))
45
46 local stage2=$path/init
47
48 content="$(
49 echo "#!/bin/sh"
50 echo "# $name"
51 echo "# created by init-script-builder.sh"
52 echo "exec $stage2"
53 )"
54
55 [ "$path" != "$defaultConfig" ] || {
56 echo "$content" > $tmp
57 echo "# older configurations: $targetOther" >> $tmp
58 chmod +x $tmp
59 }
60
61 echo -e "$content\n\n" >> $tmpOther
62}
63
64
65mkdir -p /boot /sbin
66
67addEntry "@distroName@ - Default" $defaultConfig ""
68
69# Add all generations of the system profile to the menu, in reverse
70# (most recent to least recent) order.
71for link in $((ls -d $defaultConfig/specialisation/* ) | sort -n); do
72 date=$(stat --printf="%y\n" $link | sed 's/\..*//')
73 addEntry "@distroName@ - variation" $link ""
74done
75
76for generation in $(
77 (cd /nix/var/nix/profiles && ls -d system-*-link) \
78 | sed 's/system-\([0-9]\+\)-link/\1/' \
79 | sort -n -r); do
80 link=/nix/var/nix/profiles/system-$generation-link
81 date=$(stat --printf="%y\n" $link | sed 's/\..*//')
82 if [ -d $link/kernel ]; then
83 kernelVersion=$(cd $(dirname $(readlink -f $link/kernel))/lib/modules && echo *)
84 suffix="($date - $kernelVersion)"
85 else
86 suffix="($date)"
87 fi
88 addEntry "@distroName@ - Configuration $generation $suffix" $link "$generation ($date)"
89done
90
91mv $tmpOther $targetOther
92mv $tmp $target