119 lines
4.2 KiB
Python
119 lines
4.2 KiB
Python
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#!/usr/bin/env python3
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# encoding: utf-8
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# === This file is part of Calamares - <http://github.com/calamares> ===
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#
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# Copyright 2014, Teo Mrnjavac <teo@kde.org>
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#
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# Calamares is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Calamares 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 Calamares. If not, see <http://www.gnu.org/licenses/>.
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import os
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import subprocess
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from libcalamares import *
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from filecopy import FileCopyThread
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class UnsquashOperation:
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def __init__( self, unpack ):
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self.unpacklist = unpack
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self.unpackstatus = dict()
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for entry in unpack:
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self.unpackstatus[ entry[ "source" ] ] = { 'copied': 0, 'total': 0 }
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def updateCopyProgress( self, source, nfiles ):
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if source in self.unpackstatus:
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self.unpackstatus[ source ][ 'copied' ] = nfiles
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self.reportProgress()
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def reportProgress( self ):
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progress = float( 0 )
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for entry in self.unpackstatus:
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partialProgress = float( 0 )
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if entry[ 'total' ] is not 0:
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partialProgress += 0.05
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else:
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continue
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partialProgress += 0.95 * ( entry[ 'copied' ] / float( entry[ 'total' ] ) )
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progress += partialProgress / len( self.unpackstatus )
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job.setprogress( progress )
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def run( self ):
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sourceMountPath = job.configuration[ "sourceMountPath" ]
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for entry in self.unpacklist:
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unsqfsProcess = subprocess.Popen( [ "unsquashfs", "-l", entry[ "source" ] ], stdout = subprocess.PIPE )
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wcProcess = subprocess.Popen( [ "wc", "-l" ], stdin = unsqfsProcess.stdout, stdout = subprocess.PIPE )
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countString = wcProcess.communicate()[ 0 ]
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filesCount = int( float( countString ) )
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self.unpackstatus[ entry[ "source" ] ][ 'total' ] = filesCount
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imgBaseName = os.path.splitext( os.path.basename( entry[ "source" ] ) )[ 0 ]
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imgMountDir = sourceMountPath + os.sep + imgBaseName
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os.mkdir( imgMountDir )
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entry[ "sourceDir" ] = imgMountDir
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self.reportProgress()
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self.unsquashImage( entry )
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def unsquashImage( self, entry ):
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subprocess.check_call( [ "mount", entry[ "source" ], entry[ "sourceDir" ], "-t", "squashfs", "-o", "loop" ] )
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t = FileCopyThread( entry[ "sourceDir" ], entry[ "destination" ], self.reportProgress )
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t.start()
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t.join()
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def run():
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# from globalStorage: rootMountPoint
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# from job.configuration:
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# the path to where to mount the source image(s) for copying
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# an ordered list of unpack mappings for sqfs file <-> target dir relative
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# to rootMountPoint, e.g.:
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# configuration:
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# sourceMountPath: "/some/path"
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# unpack:
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# - source: "/path/to/squashfs/image.sqfs"
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# destination: ""
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# - source: "/path/to/another/image.sqfs"
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# destination: ""
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rootMountPoint = globalStorage.value( "rootMountPoint" )
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unpack = list()
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sourceTempPath = os.path.abspath( job.configuration[ "sourceMountPath" ] )
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if not os.path.exists( sourceTempPath ):
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os.mkdir( sourceTempPath )
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if not os.path.exists( sourceTempPath ):
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return "Error: cannot create temporary mount directory for source images"
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for entry in job.configuration[ "unpack" ]:
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source = os.path.abspath( entry[ "source" ] )
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destination = os.path.abspath( os.path.join( rootMountPoint, entry[ "destination" ] ) )
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if not os.path.isfile( source ) or not os.path.isdir( destination ):
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return "Error: bad source or destination"
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unpack.append( { 'source': source, 'destination': destination } )
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unsquashop = UnsquashOperation( unpack )
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return unsquashop.run()
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