Re: question about bprm_ops->alloc_security(&bprm) (fwd)

From: Stephen Smalley (sdsat_private)
Date: Thu Feb 07 2002 - 04:42:54 PST

  • Next message: Serge E. Hallyn: "Re: question about bprm_ops->alloc_security(&bprm)"

    On Wed, 6 Feb 2002, Chris Wright wrote:
    
    > 2) move the set_security hook out of prepare_binprm and locate it after
    > the copy_strings calls.  penalty same as above, plus any problems
    > introduced by this move (i don't see any in dummy.c, capability.c and
    > owlsm.c).
    
    This may have side effects.  prepare_binprm can be called multiple times
    on the same execve operation, e.g. from search_binary_handler on
    /sbin/loader for the Alpha or from the em86, misc, or script binary format
    handlers for interpreters.  Keeping the set_security hook in
    prepare_binprm allows the security module to perform checking for these
    additional calls and possibly to revise the new linux_binprm security
    data based on the loader/interpreter.
    
    --
    Stephen D. Smalley, NAI Labs
    ssmalleyat_private
    
    
    
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