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发表于 2003-5-26 21:55:22
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hlf1099210, u had better tell u what u really want to do. what kind of purpose u encryption want to achieve.
if u open/r/w/close via ext2 fs, u file is controlled by ext2,
if u o/r/w/c via /dev/fd0, you operate on block device directly. then there should be no fs at all. u take care the whole floppy layout by uself. u decide which data block u put where.
if u write data via /dev/fd0 while u still have ext2 fs on it. fs do not have record about disk usage, then fs will assume those blocks are empty, then it is possible to overwrite what u write. and if u what u write overwrite the blocks that ext2 are using, ext2 fs will be corrupted. |
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