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Versions: 53
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Stored size: 687 Bytes
Contents
module AUFSProbe
#
# TODO: Verify these offsets - in the standard superblock,
# sig (magic) is a short surrounded by two valid shorts.
#
AUFS_SUPER_OFFSET = 1024
AUFS_MAGIC_OFFSET = 52
AUFS_MAGIC_SIZE = 4
AUFS_SUPER_MAGIC = 0x12121313
AUFS_FSTYPE = "aufs".freeze
def self.probe(dobj)
return false unless dobj.kind_of?(MiqDisk)
# Check for aufs magic number or name at offset.
dobj.seek(AUFS_SUPER_OFFSET + AUFS_MAGIC_OFFSET)
buf = dobj.read(AUFS_MAGIC_SIZE)
bs = buf&.unpack('L')
magic = bs.nil? ? nil : bs[0]
raise "AUFS is Not Supported" if magic == AUFS_SUPER_MAGIC || buf == AUFS_FSTYPE
# No AUFS.
false
end
end
Version data entries
53 entries across 53 versions & 1 rubygems