Re: link state missing error on 10.6
Re: link state missing error on 10.6
- Subject: Re: link state missing error on 10.6
- From: Rick Macklem <email@hidden>
- Date: Wed, 27 Jan 2010 17:07:04 -0500 (EST)
On Wed, 27 Jan 2010, Michael Eddington wrote:
Lets forget for a second that I mentioned nsysent. We have what looks
like broken functionality between 10.5 and 10.6. A kext that uses
com.apple.kernel as it's dependencies will pass the initial checks for
kext loading, try to be loaded and then the loader will bail out when
it finds a null pointer.
Here is the code I found for OSKext.cpp that issues the error message.
From OSKext::loadExecutable():
if (isKernelComponent()) {
OSData * kernelLinkState = OSKext::getKernelLinkState();
kxlddeps[0] = (u_char *)kernelLinkState->getBytesNoCopy();
} else for (i = 0; i < num_kxlddeps; i++) {
OSKext * dependency = OSDynamicCast(OSKext, dependencies->getObject(i));
if (!dependency->linkState) {
// xxx - maybe we should panic here
OSKextLog(this,
kOSKextLogErrorLevel |
kOSKextLogLoadFlag | kOSKextLogLinkFlag,
"Can't load kext %s - link state missing.",
getIdentifierCString());
goto finish;
}
kxlddeps[i] = (u_char *)dependency->linkState->getBytesNoCopy();
assert(kxlddeps[i]);
}
-mike
Just fyi, my open source NFSv4 client that works for Leopard
(http://code.google.com/p/macnfsv4) can't
be ported to Snow Leopard until the above bug is fixed (or there is
a way to load a Kext against com.apple.kernel). My current attempt
fails with the "... link state missing" as above.
rick
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