c781a522d8
Also some major cleanups: Reduce some more code duplication (verify_hmac, simplify backup_restore_prepare). Rename backup_dir/backup_tmpdir variables to better match its purpose. Rename backup_do_copy back to backup_do. Require QubesVm object (instead of VM name) as appvm param.
120 lines
4.3 KiB
Python
Executable File
120 lines
4.3 KiB
Python
Executable File
#!/usr/bin/python2
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#
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# The Qubes OS Project, http://www.qubes-os.org
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#
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# Copyright (C) 2010 Joanna Rutkowska <joanna@invisiblethingslab.com>
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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#
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from qubes.qubes import QubesVmCollection
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from qubes.qubes import QubesException
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from qubes.backup import backup_prepare, backup_do
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from qubes.qubesutils import size_to_human
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from optparse import OptionParser
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import os
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import sys
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import getpass
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def print_progress(progress):
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print >> sys.stderr, "\r-> Backing up files: {0}%...".format (progress),
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def main():
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usage = "usage: %prog [options] <backup-dir-path> [vmname ...]"
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parser = OptionParser (usage)
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parser.add_option ("-x", "--exclude", action="append", dest="exclude_list",
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help="Exclude the specified VM from backup (might be repeated)")
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parser.add_option ("--force-root", action="store_true", dest="force_root", default=False,
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help="Force to run, even with root privileges")
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parser.add_option ("-d", "--dest-vm", action="store", dest="appvm",
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help="The AppVM to send backups to")
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parser.add_option ("-e", "--encrypt", action="store_true", dest="encrypt", default=False,
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help="Encrypts the backup")
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(options, args) = parser.parse_args ()
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if (len (args) < 1):
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print >> sys.stderr, "You must specify the target backup directory (e.g. /mnt/backup)"
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print >> sys.stderr, "qvm-backup will create a subdirectory there for each individual backup."
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exit (0)
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base_backup_dir = args[0]
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if os.geteuid() == 0:
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if not options.force_root:
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print >> sys.stderr, "*** Running this tool as root is strongly discouraged, this will lead you in permissions problems."
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print >> sys.stderr, "Retry as unprivileged user."
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print >> sys.stderr, "... or use --force-root to continue anyway."
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exit(1)
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# Only for locking
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qvm_collection = QubesVmCollection()
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qvm_collection.lock_db_for_reading()
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qvm_collection.load()
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vms = None
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if (len (args) > 1):
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vms = [qvm_collection.get_vm_by_name(vmname) for vmname in args[1:]]
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files_to_backup = None
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try:
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files_to_backup = backup_prepare(vms_list=vms, exclude_list=options.exclude_list)
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except QubesException as e:
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print >>sys.stderr, "ERROR: %s" % str(e)
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exit(1)
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total_backup_sz = reduce(lambda size, file: size+file["size"],
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files_to_backup, 0)
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if not options.appvm:
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appvm = None
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stat = os.statvfs(base_backup_dir)
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backup_fs_free_sz = stat.f_bsize * stat.f_bavail
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print
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if (total_backup_sz > backup_fs_free_sz):
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print >>sys.stderr, "ERROR: Not enough space available on the backup filesystem!"
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exit(1)
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print "-> Available space: {0}".format(size_to_human(backup_fs_free_sz))
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else:
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appvm = qvm_collection.get_vm_by_name(options.appvm)
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if appvm is None:
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print >>sys.stderr, "ERROR: VM {0} does not exist".format(options.appvm)
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exit(1)
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prompt = raw_input ("Do you want to proceed? [y/N] ")
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if not (prompt == "y" or prompt == "Y"):
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exit (0)
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passphrase = getpass.getpass("Please enter the pass phrase that will be used to encrypt/verify the backup: ")
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try:
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backup_do(base_backup_dir, files_to_backup, passphrase,
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progress_callback=print_progress,
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encrypt=options.encrypt,
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appvm=appvm)
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except QubesException as e:
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print >>sys.stderr, "ERROR: %s" % str(e)
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exit(1)
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print
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print "-> Backup completed."
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qvm_collection.unlock_db()
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main()
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