Revision 5b20c402 snf-pithos-backend/pithos/backends/lib/hashfiler/context_file.py

b/snf-pithos-backend/pithos/backends/lib/hashfiler/context_file.py
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# or implied, of GRNET S.A.
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from os import SEEK_CUR, SEEK_SET, fsync


  		





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from errno import ENOENT


  		





  
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from errno import ENOENT, EROFS


  		





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_zeros = ''


  		





  ......




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        try:


  		





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            fdesc = open(name, 'rb+')


  		





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        except IOError, e:


  		





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            if not self.create or e.errno != ENOENT:


  		





  
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            if self.create and e.errno == ENOENT:


  		





  
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                fdesc = open(name, 'w+')


  		





  
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            elif not self.create and e.errno == EROFS:


  		





  
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                fdesc = open(name, 'rb')


  		





  
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            else:


  		





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                raise


  		





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            fdesc = open(name, 'w+')


  		





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        self.fdesc = fdesc


  		





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        return self


  		












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