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| author |  Derrick Stolee <stolee@gmail.com> | 2018-07-12 15:39:32 -0400 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2018-07-20 11:27:28 -0700 |
| commit | 662148c4356620f6567b0a689602079339ebadb7 (patch) | |
| tree | f48a63aa641e6b9bc8720e85ce3161e56bf89dcc /hash.h | |
| parent | midx: write object id fanout chunk (diff) | |
| download | tgif-662148c4356620f6567b0a689602079339ebadb7.tar.xz | |
midx: write object offsets
The final pair of chunks for the multi-pack-index file stores the object
offsets. We default to using 32-bit offsets as in the pack-index version
1 format, but if there exists an offset larger than 32-bits, we use a
trick similar to the pack-index version 2 format by storing all offsets
at least 2^31 in a 64-bit table; we use the 32-bit table to point into
that 64-bit table as necessary.
We only store these 64-bit offsets if necessary, so create a test that
manipulates a version 2 pack-index to fake a large offset. This allows
us to test that the large offset table is created, but the data does not
match the actual packfile offsets. The multi-pack-index offset does match
the (corrupted) pack-index offset, so a future feature will compare these
offsets during a 'verify' step.
Signed-off-by: Derrick Stolee <dstolee@microsoft.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'hash.h')
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