Re: Possible system call interface for LSM

From: Crispin Cowan (crispinat_private)
Date: Fri Aug 10 2001 - 19:27:53 PDT

  • Next message: Crispin Cowan: "Re: Possible system call interface for LSM"

    jmjonesat_private wrote:
    
    > On Fri, 10 Aug 2001, Crispin Cowan wrote:
    > > I believe that the argumenthere is that the compute cost of an extra
    > > parameter is paid by all modules on every call to the LSM syscall, vs. a
    > > one-time cost of accessing a pseudo-file to identify a module.  The file
    > > access is slower, but occurs much less often, off the critical path.
    >
    > Relegate this to testing?  By the time it's tested, it'll be so deep in
    > LSM that it will be a whole NEW argument to get it out.  I have been
    > burned by this idea before and would rather not "sit tight" on it again.
    > (just me.)
    
    One of us is confused :-)  I don't know what you mean by "relegate this to
    testing".  I believe that we are all in agreement that there needs to be some way
    for an app to test if a given module is present, and we're discussing how best to
    do it.
    
    Crispin
    
    --
    Crispin Cowan, Ph.D.
    Chief Scientist, WireX Communications, Inc. http://wirex.com
    Security Hardened Linux Distribution:       http://immunix.org
    Available for purchase: http://wirex.com/Products/Immunix/purchase.html
    
    
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