We do allocate amount of memory (void * or char *), and then assign this
buffer to struct iso_primary_descriptor *vd. Make sure we do
allocate enough bytes.
In fact we do allocate enough, but it is good idea to make sure this really
is so.
MFC after: 1 week
This is part of a project for adding the ability to create hybrid CD/USB boot
images. In the BIOS case when booting from something that isn't a CD we need
some extra boot code to actually find our next stage (loader) within an
ISO9660 filesystem. This code will reside in a GPT partition (similar to
gptboot(8) from which it is derived) and looks for /boot/loader in an
ISO9660 filesystem on the image.
Reviewed by: imp
Sponsored by: iXsystems, Inc.
Differential Revision: https://reviews.freebsd.org/D14914
