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

From: hgxieat_private
Date: Wed Feb 06 2002 - 17:21:19 PST

  • Next message: Stephen Smalley: "Re: question about bprm_ops->alloc_security(&bprm) (fwd)"

    What I want is to check the "envp" ( the envp passed to the
    sys_execve()).. current hook in do_execve() do not give me this envp, 
    the first one alloc_security(&bprm) is too early that the bprm do not 
    get envp from the copy_string yet..so I ask for another hook..but I found
    that the free_security(&bprm) can get me the envp in bprm structure, but
    it do not let me return an error from it. The best way for me is add a new
    hook after copy_string the envp..
    
    does this make it clear?
    
    Thanks,
    Huagang
    
    
    On Wed, 6 Feb 2002, Chris Wright wrote:
    
    > * Huagang Xie (xieat_private) wrote:
    > > If the 
    > > 	security_ops->bprm_ops->free_security(&bprm);
    > > can take a retval as a return value, it will be good for me.
    > > like,
    > > 	       if (retval >= 0) {
    > >                 /* execve success */
    > >                 retval = security_ops->bprm_ops->free_security(&bprm);
    > >                 return retval;
    > >         }
    > 
    > hmm, now i'm confused. at that point the loader is done.  you've "passed
    > the point of no return."  what are you trying to accomplish?
    > 
    > thanks,
    > -chris
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