linux-kernel - Re: capability.h

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Date:	Mon, 17 Mar 2008 22:02:16 -0500
From:	serge@...lyn.com
To:	Justin Mattock <justinmattock@...il.com>
Cc:	linux-kernel@...r.kernel.org, Andrew Morgan <morgan@...nel.org>
Subject: Re: capability.h

Quoting Justin Mattock (justinmattock@...il.com):
> Hello; I seem to be very confused on how to install fglrx on 2.6.25-*
> below is the warnings and errors,
> 
> 
> cleaning...
> patching 'highmem.h'...
> assuming new VMA API since we do have kernel 2.6.x...
> def_vma_api_version=-DFGL_LINUX253P1_VMA_API
>  Assuming default VMAP API
>  Assuming default munmap API
> doing Makefile based build for kernel 2.6.x and higher
> make -C /lib/modules/2.6.25-rc6/build
> SUBDIRS=/lib/modules/fglrx/build_mod/2.6.x modules
> make[1]: Entering directory `/home/kernel/linux-2.6.25-rc6'
>   CC [M]  /lib/modules/fglrx/build_mod/2.6.x/firegl_public.o
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function
> 'KCL_SetPageNoCache':
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:1161: warning:
> 'change_page_attr' is deprecated (declared at
> include/asm/cacheflush.h:28)
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function
> 'KCL_PosixSecurityCapGetEffectiveVector':
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:1888: error:
> implicit declaration of function 'cap_t'
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function
> 'KCL_PosixSecurityCapSetEffectiveVector':
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:1896: error:
> invalid lvalue in assignment
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function
> '__ke_check_pci':
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:1951: warning:
> 'pci_find_slot' is deprecated (declared at include/linux/pci.h:508)
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c: In function
> '__ke_pci_find_slot':
> /lib/modules/fglrx/build_mod/2.6.x/firegl_public.c:2840: warning:
> 'pci_find_slot' is deprecated (declared at include/linux/pci.h:508)
> make[2]: *** [/lib/modules/fglrx/build_mod/2.6.x/firegl_public.o] Error 1
> make[1]: *** [_module_/lib/modules/fglrx/build_mod/2.6.x] Error 2
> make[1]: Leaving directory `/home/kernel/linux-2.6.25-rc6'
> make: *** [kmod_build] Error 2
> build failed with return value 2
> 
> 
> Under firegl_public.c it seems the module is requesting a cap_t  get
> and receive an effective vector.
> With the new capability.h file, what is the capability that replaces cap_t?

cap_t() appears to be defined under ifdef __KERNEL__.  Which makes
sense since it takes a struct kernel_cap_t :)  I don't have the
source code you're compiling, and don't know what would be the "right"
way to fix it, but to get your code to compile I'd just put a
#define cap(x) (x).cap
at the top of the .c files needing it.

-serge
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