Re: kextload link/load error
Re: kextload link/load error
- Subject: Re: kextload link/load error
- From: "mm w" <email@hidden>
- Date: Wed, 25 Jun 2008 14:10:25 -0700
Hi,
you should read this
http://developer.apple.com/documentation/DeviceDrivers/Conceptual/IOKitFundamentals/Families/chapter_7_section_3.html
On Wed, Jun 25, 2008 at 1:50 PM, Vanessa Li <email@hidden> wrote:
> Hi,
>
>
>
> I am trying to use a spinlock in my kext and am having problems with loading
> it. I am calling the initialization functions and using lck_spin_lock() and
> lck_spin_unlock(). Here is the error message:
>
>
>
> kextload: resolving dependencies for kernel extensions with validation and
> authentication failures
>
> kextload: extension /System/Library/Extensions/MyKext.kext/ appears to be
> loadable
>
> kextload: loading extension /System/Library/Extensions/MyKext.kext/
>
> kld(): Undefined symbols:
>
> _lck_attr_alloc_init
>
> _lck_attr_free
>
> _lck_grp_alloc_init
>
> _lck_grp_attr_alloc_init
>
> _lck_grp_attr_free
>
> _lck_grp_attr_setstat
>
> _lck_grp_free
>
> _lck_spin_alloc_init
>
> _lck_spin_free
>
> _lck_spin_lock
>
> _lck_spin_unlock
>
> kextload: kld_load_from_memory() failed for module
> /System/Library/Extensions/MyKext.kext/Contents/MacOS/MyKext
>
> kextload: a link/load error occured for kernel extension
> /System/Library/Extensions/MyKext.kext/
>
>
>
> However, I am able to find these symbols when doing the command nm
> /mach_kernel | less.
>
>
>
> I am also including kernel.frameworks in my project.
>
>
>
>
>
> Any ideas what's wrong?
>
>
>
> Thanks.
>
>
>
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--
-mmw
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