Dan Ehrenberg d7da706484 cgpt: Handle read errors gracefully ...

When a read fails in getting the GPT, just zero the contents of the
buffer and carry on.

Some testing changes are required for this. When a read of the GPT
fails, it is no longer fatal, so tests of that have been adjusted.
Tests have been improved to show that the GPT is automatically
repaired when a read error occurs.
There was one test which checked that a zero-sized disk would fail
to load a kernel, but it was surrounded by a number of mocked
functions which normally do that error checking, and it amounted
to the same test as read failure; that test was deleted.

BUG=chrome-os-partner:35440
TEST=vboot tests pass
BRANCH=none

Change-Id: I0c05813e7492920433733947d3fb74a7e4aa66f2
Signed-off-by: Dan Ehrenberg <dehrenberg@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/266882
Reviewed-by: Randall Spangler <rspangler@chromium.org>

2015-04-29 00:21:30 +00:00

6.7 KiB

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