Revision 5756c277 image_creator/image.py
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# interpreted as representing official policies, either expressed |
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# or implied, of GRNET S.A. |
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from image_creator.util import FatalError, check_guestfs_version
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from image_creator.util import FatalError |
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from image_creator.gpt import GPTPartitionTable |
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from image_creator.os_type import os_cls |
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self.g = guestfs.GuestFS() |
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self.guestfs_enabled = False |
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self.guestfs_version = self.g.version() |
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def check_guestfs_version(self, major, minor, release): |
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"""Checks if the version of the used libguestfs is smaller, equal or |
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greater than the one specified by the major, minor and release triplet |
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Returns: |
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< 0 if the installed version is smaller than the specified one |
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= 0 if they are equal |
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> 0 if the installed one is greater than the specified one |
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""" |
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for (a, b) in (self.guestfs_version['major'], major), \ |
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(self.guestfs_version['minor'], minor), \ |
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(self.guestfs_version['release'], release): |
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if a != b: |
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return a - b |
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return 0 |
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def enable(self): |
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"""Enable a newly created Image instance""" |
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# Before version 1.18.4 the behaviour of kill_subprocess was different |
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# and you need to reset the guestfs handler to relaunch a previously |
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# shut down qemu backend |
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if check_guestfs_version(self.g, 1, 18, 4) < 0:
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if self.check_guestfs_version(1, 18, 4) < 0:
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self.g = guestfs.GuestFS() |
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self.g.add_drive_opts(self.device, readonly=0, format="raw") |
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# file descriptors. This can cause problems especially if the parent |
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# process has opened pipes. Since the recovery process is an optional |
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# feature of libguestfs, it's better to disable it. |
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if check_guestfs_version(self.g, 1, 17, 14) >= 0:
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if self.check_guestfs_version(1, 17, 14) >= 0:
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self.out.output("Enabling recovery proc")
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self.g.set_recovery_proc(1) |
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else: |
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# self.progressbar.success('done')
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# self.progressbar = None |
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if check_guestfs_version(self.g, 1, 18, 4) < 0:
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if self.check_guestfs_version(1, 18, 4) < 0:
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self.g.inspect_os() # some calls need this |
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self.out.success('done')
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self.g.sync() |
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# guestfs_shutdown which is the prefered way to shutdown the backend |
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# process was introduced in version 1.19.16 |
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if check_guestfs_version(self.g, 1, 19, 16) >= 0:
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if self.check_guestfs_version(1, 19, 16) >= 0:
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self.g.shutdown() |
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else: |
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self.g.kill_subprocess() |
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