factoring out "at" syscalls common code in nlookup

Matthew Dillon dillon at apollo.backplane.com
Sun Jul 26 14:27:03 PDT 2009

:As part of implementing the at family of syscalls (openat(),
:fstatat(), ...), I propose to put the common code handling the file
:descriptor argument in the namecache as shown in the patch below.
:Any objection?

    Looks pretty good but what is nl_atfp used for?  The fp has to be
    held anyway, I know, but I think I'd rather it be done explicitly
    in the system calls like it is already.


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