src/nitsi/disk.py

   1 #!/usr/bin/python3
   2
   3 import guestfs
   4 import logging
   5 import os
   6 import tarfile
   7 import tempfile
   8
   9 logger = logging.getLogger("nitsi.disk")
  10
  11
  12 class Disk():
  13     def __init__(self, disk):
  14         self.log = logger.getChild(os.path.basename(disk))
  15         self.log.debug("Initiated a disk class for {}".format(disk))
  16         self.con = guestfs.GuestFS(python_return_dict=True)
  17         self.con.add_drive_opts(disk, format="qcow2")
  18
  19     def mount(self, uuid, path):
  20         self.log.info("Trying to mount the partion with uuid: {} under {}".format(uuid, path))
  21         self.con.launch()
  22         part = self.con.findfs_uuid(uuid)
  23         self.con.mount(part, path)
  24
  25     def copy_in(self, fr, to):
  26         self.log.info("Going to copy some files into the image.")
  27         tmp = tempfile.mkstemp()
  28         tmp = tmp[1] + ".tar"
  29         self.log.debug("Path of tarfile is: {}".format(tmp))
  30         with tarfile.open(tmp, "w") as tar:
  31             for file in fr:
  32                 self.log.debug("Adding {} to be copied into the image".format(file))
  33                 tar.add(file, arcname=os.path.basename(file))
  34
  35         self.log.info("Going to copy the files into the image")
  36         self.con.tar_in_opts(tmp, to)
  37         self.log.debug(self.con.ls(to))
  38
  39     def umount(self, path):
  40         self.log.info("Unmounting the image")
  41         self.con.umount_opts(path)
  42
  43     def close(self):
  44         self.log.info("Flush the image and closing the connection")
  45         self.con.shutdown()
  46         self.con.close()
  47
  48 # test  = Disk("/var/lib/libvirt/images/ipfire-bob.qcow2")
  49 # test.mount("1efb5389-0949-46bb-b688-5246acba9f6d", "/")
  50 # test.copy_in("/home/jonatan/nitsi/libguestfs-test", "/root/")
  51 # test.umount("/")
  52 # test.close()