block: Check for read/write requests over 64K

The standard BIOS disk read/write request interface should never get a
request for more than 64K of data.  Explicitly check for overly large
requests and reject them.  This way, the low-level drivers do not need
to check for or attempt to handle very large requests.

Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
2 files changed
tree: d5ac9eafa31c4ff17f4ab4c37e129a2938fc54cd
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  2. COPYING
  3. COPYING.LESSER
  4. Makefile
  5. README
  6. docs/
  7. scripts/
  8. src/
  9. vgasrc/