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#
# Copyright 2005 Red Hat, Inc.
# Jeremy Katz <katzj@redhat.com>
#
# This software may be freely redistributed under the terms of the GNU
# general public license.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#
import os
import sys
fstypes = {}
def register_fstype(x):
if x.name in fstypes.keys():
return
fstypes[x.name] = x
class FileSystemType(object):
"""A simple representation for a file system that gives a fs name
and a method for sniffing a file to see if it's of the given fstype."""
def __init__(self):
self.name = ""
def sniff_magic(self, fn, offset = 0):
"""Look at the filesystem at fn for the appropriate magic starting at
offset offset."""
raise RuntimeError, "sniff_magic not implemented"
def open_fs(self, fn, offset = 0):
"""Open the given filesystem and return a filesystem object."""
raise RuntimeError, "open_fs not implemented"
class FileSystem(object):
def open(self, name, flags = 0, block_size = 0):
"""Open the fsys on name with given flags and block_size."""
raise RuntimeError, "open not implemented"
def close(self):
"""Close the fsys."""
raise RuntimeError, "close not implemented"
def open_file(self, file, flags = None):
"""Open the file 'name' with the given flags. The returned object
should look similar to a native file object."""
raise RuntimeError, "open_file not implemented"
def file_exist(self, file):
"""Check to see if the give file is existed.
Return true if file existed, return false otherwise."""
raise RuntimeError, "file_exist not implemented"
mydir = sys.modules['grub.fsys'].__path__[0]
for f in os.listdir(mydir):
if not os.path.isdir("%s/%s" %(mydir, f)):
continue
try:
exec "import grub.fsys.%s" %(f,)
except ImportError, e:
pass
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