atimes of binaries not properly updated

Dionysus Blazakis dion.blazakis at
Thu May 22 09:23:46 PDT 2008

On Wed, May 21, 2008 at 8:19 PM, Matthew Dillon
<dillon at> wrote:
> :Hrm.  Nevermind.  The ucred's passed to the fs vnops are dereferenced
> :without check.
>     You can try passing FSCRED, which is basically a root cred from
>     process 0.
>                                        -Matt
>                                        Matthew Dillon
>                                        <dillon at>

The issue is that FSCRED and NOCRED are checked in the kern_prot.c
helper functions, but the vnops functions in the various file systems
dereference the struct ucred pointers without checking for a
NULL(NOCRED) or 0xFFFFFFFF(FSCRED) pointers.  So what is the ideal
solution?  Should the ucred API be extended in kern_prot to do the uid
check that the file systems do (while taking into account NOCRED and

And I thought this was such a simple patch ;)

-- Dion

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