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#!/usr/bin/python
# -*- coding: iso-8859-1 -*-
# gru 1.1
# GRUB RECOVER UTILITY
# Reinstall grub menu after another impolite "operative system" overwrites MBR
# author: Alfonso E.M. alfonso@el-magnifico.org
# date: 16/Mar/2007
# changelog:
# 21/Mar/2007 chroot is not needed anymore
import commands
import sys
import re
cmd = "/usr/bin/zenity --title 'Recuperador del menú de arranque'"
# Some useful functions:
# menu: Shows a dialog with options
def menu(text, header1, header2, options):
params = cmd + " --height 250 --width 350 --list --text '" + text + \
"' --column '" + header1 + "' --column '" + header2 + "' " + options
out = ""
while len(out) == 0:
st, out = commands.getstatusoutput(params)
if st != 0:
sys.exit()
return st, out
# info: Shows a simple message
def info(text):
params = cmd + " --width 350 --info --text '" + text + "'"
st, out = commands.getstatusoutput(params)
return
# get_partitions: grabs disks and partitions info from /proc
def get_partitions():
disks = []
partitions = ""
try:
list = open("/proc/partitions")
except:
print ("ERROR: opening /proc/partitions")
else:
while 1:
line = list.readline()
if line == "":
break
items = re.split("\s+", line)
if len(items) == 6:
if len(items[4]) == 3:
disks.append(items[4])
if len(items[4]) == 4:
partitions += "'" + items[4] + "' '" + \
translate(items[4]) + "' "
list.close
return disks, partitions
# tranlate: Converts from hda, sda.. format to human readable (likely)
def translate(item):
name = ""
if item[:1] == 's':
name = "Disco SCSI "
if item[:1] == "h":
name = "Disco IDE "
name += (item[2])
name += (", particion ")
name += (item[3])
return name
# MAIN
disks, partitions = get_partitions()
status, output = menu("¿Donde ha instalado Guadalinex?", \
"Disco", \
"Descripción", \
partitions)
origin = "/dev/" + output
options = "'A' 'En el sector de arranque' 'B' 'En la partición de Guadalinex'"
info("""Normalmente el menú se instala al principio del primer disco,
en el sector de arranque.
Pero si ya tiene un gestor de arranque y desea conservarlo, puede instalar
el nuevo en la partición de Guadalinex.
En caso de duda, seleccione la primera opción.""")
status, output = menu("¿Donde desea el menú?", \
"Opción", \
"Descripción", \
options)
if output == "A":
target = "/dev/" + disks[0]
else:
target = origin
status, output = commands.getstatusoutput("mkdir /mnt/gru")
if status > 0:
info("No es posible crear un directorio temporal")
sys.exit(status)
status, output = commands.getstatusoutput("mount " + origin + " /mnt/gru")
if status > 0:
info("No es posible acceder a la particion seleccionada")
status, output = commands.getstatusoutput("rmdir /mnt/gru")
sys.exit(status)
try:
list = open("/mnt/gru/boot/grub/menu.lst")
except:
info("En esta partición no hay datos de menú instalables")
status, output = commands.getstatusoutput("umount /mnt/gru")
status, output = commands.getstatusoutput("rmdir /mnt/gru")
sys.exit(status)
menupoints = ""
while 1:
line = list.readline()
if line == "":
break
if re.search("^title\s+", line):
key, value = re.split("title\s+", line, 1)
menupoints += value
list.close()
info("Este es el menú que se instalará:\n\n" + menupoints)
#status,output=commands.getstatusoutput("chroot /mnt/gru grub-install "+target)
status, output = commands.getstatusoutput("/sbin/grub-install " + \
"--root-directory=/mnt/gru " + target)
if status > 0:
info("No es posible instalar el menú en " + target)
print output
status, output = commands.getstatusoutput("umount /mnt/gru")
status, output = commands.getstatusoutput("rmdir /mnt/gru")
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