#!/bin/bash

### Imports ###################################################################

source ScriptFunctions
# Import GoboLinux # if you want Verify_Superuser
Import OptionParser
Import File

### Options ###################################################################

#scriptDescription="[[Create an initrd]]"
scriptCredits="Copyright (C) 2005 Carlo J. Calica Released under the GNU GPL."
#helpOnNoArguments=yes
scriptUsage="<options> <extra_modules...>"
scriptExample="-o /tmp/initrd -- libata /external/module.ko"
scriptNotes="In order to use an initrd, changes to your grub config are required.
An example:

title GoboLinux - Console - initrd
kernel (hd0,0)/System/Kernel/Boot/kernel acpi=off root=/dev/ram0 vga=0 init=/linuxrc
initrd (hd0,0)/System/Kernel/Boot/initrd.img
"
#Add_Option_Boolean "b" "bool" "A boolean option."
Add_Option_Entry "o" "output" "Specify </path/to/initrd.img>." "$goboBoot/initrd.img"
Add_Option_Entry "m" "module_dir" "Specify <module_base_dir>." "$goboModules/`uname -r`"
Add_Option_Entry "r" "rootdev" "Specify <root_device>." "/dev/sda1"
#Add_Option_List "l" "list" "Enter a colon-separated list of..." "foo:bar"
Parse_Options "$@"

# Global Defines
initrd_path="/tmp/initrd"
raw_initrd="/tmp/initrd-raw.img"


### Operation #################################################################


[ $UID = "0" ] || Die "$scriptName must be run as superuser."
Exists "$goboPrograms/Busybox/Current" || Die "$scriptName requires Busybox package."

Assert_Dir "$initrd_path"

module_dir=`Entry "module_dir"`
initrd=`Entry "output"`
eval `Array_To_Args extramodules`
mkinitrd.pl `Entry "rootdev"` "$initrd_path" "$module_dir" "${extramodules[@]}"

Log_Normal "Creating $initrd from $module_dir"
# cramfs not in base kernel.  Do this the hardway.
mkfs.cramfs "$initrd_path" "$initrd"

exit
# The Hardway
rm -- "$raw_initrd"
size=`du -sk /tmp/initrd| cut -d / -f 1`
Log_Normal "Create initrd of size $size KB"
dd "if=/dev/zero" of=$raw_initrd bs=1k seek=$size count=$size   # Yes 2x the size
mkfs.ext2 -F -m0 $raw_initrd

mount -o loop $raw_initrd /Mount/Floppy
cp -pR /tmp/initrd/. /Mount/Floppy
umount /Mount/Floppy

gzip -c $raw_initrd >$comp_initrd

# End of "The Hardway"