cryptonas-branches/pythonrewrite/plugins/partition/root_action.py

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#!/usr/bin/env python2.4
## necessary: otherwise CryptoBoxRootActions.py will refuse to execute this script
PLUGIN_TYPE = "cryptobox"
SFDISK_BIN = "/sbin/sfdisk"
MKFS_BIN = "/sbin/mkfs"
LABEL_BIN = "/sbin/e2label"
import subprocess
import re
import sys
import os
def __partitionDevice(device):
## do not use the "-q" flag, as this spoils the exit code of sfdisk (seems to be a bug)
proc = subprocess.Popen(
shell = False,
args = [
SFDISK_BIN,
"-uM",
device])
proc.communicate()
return proc.returncode == 0
def __formatPartition(device, type):
import time, threading
result = True
def formatting():
proc = subprocess.Popen(
shell = False,
stdin = subprocess.PIPE,
stdout = subprocess.PIPE,
stderr = subprocess.PIPE,
args = [
MKFS_BIN,
"-t", type,
device])
proc.communicate()
## TODO: very ugly way of communication: it assumes, that failures are fast - success is slow
if proc.returncode == 0:
time.sleep(1)
thread = threading.Thread()
thread.setDaemon(True)
thread.run = formatting
thread.start()
time.sleep(0.5)
return thread.isAlive()
def __labelPartition(device, label):
proc = subprocess.Popen(
shell = False,
args = [
LABEL_BIN,
device,
label])
proc.communicate()
return proc.returncode == 0
if __name__ == "__main__":
args = sys.argv[1:]
self_bin =sys.argv[0]
if len(args) == 0:
sys.stderr.write("%s: no argument supplied\n" % self_bin)
sys.exit(1)
try:
if args[0] == "partition":
if len(args) != 2: raise "InvalidArgNum"
result = __partitionDevice(args[1])
elif args[0] == "format":
if len(args) != 3: raise "InvalidArgNum"
result = __formatPartition(args[1], args[2])
elif args[0] == "label":
if len(args) != 3: raise "InvalidArgNum"
result = __labelPartition(args[1], args[2])
else:
sys.stderr.write("%s: invalid action (%s)\n" % (self_bin, args[0]))
sys.exit(1)
if result:
sys.exit(0)
else:
sys.exit(1)
except "InvalidArgNum":
sys.stderr.write("%s: invalid number of arguments (%s)\n" % (self_bin, args))
sys.exit(1)