#!/usr/bin/python2.4
#
# adt-virt-chroot is part of autopkgtest
# autopkgtest is a tool for testing Debian binary packages
#
# autopkgtest is Copyright (C) 2006-2007 Canonical Ltd.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
# See the file CREDITS for a full list of credits information (often
# installed as /usr/share/doc/autopkgtest/CREDITS).

import sys
import os
import string
from optparse import OptionParser

try: our_base = os.environ['AUTOPKGTEST_BASE']+'/lib'
except KeyError: our_base = '/usr/share/autopkgtest/python';
sys.path.insert(1, our_base)

import VirtSubproc as vsp
capabilities = []

def parse_args():
	global down, debuglevel

	usage = "%prog [<options>] =<dchroot>|/path/to/chroot"
	parser = OptionParser(usage=usage)
	pa = parser.add_option
	pe = parser.error

	pa('-r', '--gain-root', type='string', dest='gain_root');
	pa('-d', '--debug', action='store_true', dest='debug');

	(opts,args) = parser.parse_args()
	if len(args) != 1: pe("need exactly one arg, chroot specification")

	vsp.debuglevel = opts.debug

	chroot_arg = args[0]
	if not chroot_arg: pe("chroot specification may not be empty")
	if chroot_arg == '=':
		down = ['dchroot','-q','--']
	elif chroot_arg == '=':
		down = ['dchroot','-q','--']
	elif chroot_arg[0] == '=':
		down = ['dchroot','-q','-c',chroot_arg[1:],'--']
	elif chroot_arg[0] == '/':
		down = ['chroot',chroot_arg]
	else:
		pe("chroot spec must be =[DCHROOT] or /PATH/TO/CHROOT")

	if down[0] == 'chroot':
		vsp.downkind = 'auxverb'
	elif down[0] == 'dchroot':
		vsp.downkind = 'shstring'
	else:
		print >>sys.stderr, 'down[0]=%s' % `down[0]`
		assert(False)

	if opts.gain_root != None:
		down = opts.gain_root.split() + down

	if opts.gain_root or os.getuid()==0:
		capabilities.append('root-on-testbed')

	vsp.down = down

def hook_open():
	pass

def hook_downtmp():
	return vsp.downtmp_mktemp()

def hook_cleanup():
	vsp.downtmp_remove()

def hook_forked_inchild():
	pass

def hook_capabilities():
	return capabilities

parse_args()
vsp.main()