Garth Cummings writes:
> Hi Duane,
>
> On Jul 18, 2007, at 8:43 AM, Duane Murphy wrote:
>
> > I wanted to make sure I understood how symbols interact in kext's.
> > If I
> > use a generally available library and another kext also uses that
> > library, will those symbols interact with each other when the kext are
> > loaded? That is it possible that my kext will accidentally link to the
> > symbols in the other kext using a the same library?
>
> Not sure what you mean by "interact", but I'll take a stab at
> answering the question I think you're asking.
>
> The kernel is one big monolithic namespace. All symbols in KEXTs must
> be unique across the system as they are linked into that one
> namespace. If a KEXT defines a symbol that already exists, the KEXT
> will not load.
>
Are you really sure about this? I thought the relocations were done
by kextload in userspace, and the only namespaces that are shared
are those of your kext and what it depends on.
If there is truely a master list of all loaded symbols and their
locations, can it be accessed for debugging purposes rather than
using kextload -s and add-symbol-file?
Drew
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