Re: [Libguestfs] [hivex PATCH] Re-allocating unused blocks before assigning new blocks
On Mon, Jul 23, 2018 at 02:38:18PM -0400, Shreyas Khare wrote:
Hello Richard
As discussed in the IRC channel, when merging a moderately large reg
file (~35MB) to a hiv file (~118 MB); hivex generates a huge hiv
file (~580 MB). These changes address that by creating a list of
unallocated blocks and reassigning unused blocks. I used
https://github.com/msuhanov/regf/blob/master/Windows%20registry%20file%20...
as a reference for the structure of the hiv file (in addition to the
source code itself)
Attaching the patch file.
Just as a general comment, for the patch to go upstream at all it will
need to be reformatted so it fits with the existing code style.
[...]
/* Allocate a single block, first allocating an hbin (page) at the
end
* of the current file if necessary. NB. To keep the implementation
* simple and more likely to be correct, we do not reuse existing free
This comment is left in place, but it's now obviously wrong.
I'm a bit confused why we need a separate free list. Can't we just
use the existing bitmap?
Rich.
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