mirror of
https://github.com/linuxboot/heads.git
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100 lines
2.0 KiB
Plaintext
100 lines
2.0 KiB
Plaintext
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#!/bin/sh
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set -e -o pipefail
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bootdir="$1"
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file="$2"
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blsdir="$3"
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kernelopts=""
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if [ -z "$bootdir" -o -z "$file" ]; then
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die "Usage: $0 /boot /boot/grub/grub.cfg blsdir"
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fi
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reset_entry() {
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name=""
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kexectype="elf"
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kernel=""
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initrd=""
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modules=""
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append="$kernelopts"
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}
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filedir=`dirname $file`
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bootdir="${bootdir%%/}"
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bootlen="${#bootdir}"
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appenddir="${filedir:$bootlen}"
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# assumption. grubenv is in same location as config file
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# ignored if doesn't exist
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grubenv="$filedir/grubenv"
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fix_path() {
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path="$@"
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if [ "${path:0:1}" != "/" ]; then
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path="$appenddir/$path"
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fi
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}
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echo_entry() {
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if [ "$kexectype" = "elf" ]; then
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if [ -z "$kernel" ]; then return; fi
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fix_path $kernel
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entry="$name|$kexectype|kernel $path"
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if [ -n "$initrd" ]; then
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fix_path $initrd
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entry="$entry|initrd $path"
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fi
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if [ -n "$append" ]; then
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entry="$entry|append $append"
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fi
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echo $(eval "echo \"$entry\"")
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fi
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if [ "$kexectype" = "multiboot" -o "$kexectype" = "xen" ]; then
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if [ -z "$kernel" ]; then return; fi
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fix_path $kernel
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echo $(eval "echo \"$name|$kexectype|kernel $path$modules\"")
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fi
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}
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bls_entry() {
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# add info to menuentry
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trimcmd=`echo $line | tr '\t ' ' ' | tr -s ' '`
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cmd=`echo $trimcmd | cut -d\ -f1`
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val=`echo $trimcmd | cut -d\ -f2-`
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case $cmd in
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title)
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name=$val
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;;
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linux*)
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kernel=$val
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;;
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initrd*)
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initrd=$val
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;;
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options)
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# default is "options $kernelopts"
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# need to substitute that variable if set in .cfg/grubenv
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append=`echo "$val" | sed "s@\\$kernelopts@$kernelopts@"`
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;;
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esac
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}
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# This is the default append value if no options field in bls entry
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grep -q "set default_kernelopts" "$file" &&
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kernelopts=`grep "set default_kernelopts" "$file" |
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tr "'" "\"" | cut -d\" -f 2`
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[ -f "$grubenv" ] && grep -q "^kernelopts" "$grubenv" &&
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kernelopts=`grep "^kernelopts" "$grubenv" | tr '@' '_' | cut -d= -f 2-`
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reset_entry
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find $blsdir -type f -name \*.conf |
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while read f
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do
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while read line
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do
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bls_entry
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done < "$f"
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echo_entry
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reset_entry
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done
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