Module: Reiser4Probe

Defined in:
lib/fs/MiqFS/modules/Reiser4Probe.rb

Constant Summary collapse

REISER4_MASTER_OFFSET = 
65536
REISER4_MAGIC_OFFSET = 
REISER4_MASTER_OFFSET
REISER4_MAGIC_SIZE = 
10
REISER4_MAGIC = 
"ReIsEr4".freeze

Class Method Summary collapse

Class Method Details

.probe(dobj) ⇒ Object 



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# File 'lib/fs/MiqFS/modules/Reiser4Probe.rb', line 7

def self.probe(dobj)
  return(false) unless dobj.kind_of?(MiqDisk)

  # Assume Reiser4 - read magic at offset.
  dobj.seek(REISER4_MAGIC_OFFSET)
  magic = dobj.read(REISER4_MAGIC_SIZE)&.strip
  raise "Reiser4 is Not Supported" if magic == REISER4_MAGIC

  # No Reiser4.
  false
end