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4daf903fb0
There is no need in this inheritance as DiskImage class is used only in one module and no other classes are inherited. (From OE-Core rev: 5af1d9bedc2c961eb91faf80251f24c3df754d76) Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com> Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
54 lines
1.6 KiB
Python
54 lines
1.6 KiB
Python
#!/usr/bin/env python -tt
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#
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# Copyright (c) 2007, Red Hat, Inc.
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# Copyright (c) 2009, 2010, 2011 Intel, Inc.
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#
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# This program is free software; you can redistribute it and/or modify it
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# under the terms of the GNU General Public License as published by the Free
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# Software Foundation; version 2 of the License
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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# for more details.
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#
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# You should have received a copy of the GNU General Public License along
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# with this program; if not, write to the Free Software Foundation, Inc., 59
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# Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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from __future__ import with_statement
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import os
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import errno
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from wic.utils.oe.misc import exec_cmd
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def makedirs(dirname):
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"""A version of os.makedirs() that doesn't throw an
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exception if the leaf directory already exists.
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"""
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try:
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os.makedirs(dirname)
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except OSError, err:
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if err.errno != errno.EEXIST:
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raise
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class DiskImage():
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"""
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A Disk backed by a file.
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"""
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def __init__(self, device, size):
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self.size = size
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self.device = device
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self.created = False
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def exists(self):
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return os.path.exists(self.device)
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def create(self):
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if self.created:
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return
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# create sparse disk image
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cmd = "truncate %s -s %s" % (self.device, self.size)
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exec_cmd(cmd)
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self.created = True
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