From owner-cvs-all  Mon Jun 21 18: 1: 5 1999
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Date: Mon, 21 Jun 1999 21:00:46 -0400 (EDT)
From: "Brian F. Feldman" <green@unixhelp.org>
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To: Peter Wemm <peter@netplex.com.au>
Cc: Jean-Marc Zucconi <jmz@FreeBSD.org>, hoek@FreeBSD.org,
	cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org
Subject: Re: cvs commit: src/sys/kern imgact_gzip.c 
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On Tue, 22 Jun 1999, Peter Wemm wrote:

> Jean-Marc Zucconi wrote:
> > >>>>> Tim Vanderhoek writes:
> > 
> >  > hoek        1999/06/21 09:23:15 PDT
> >  >   Modified files:
> >  >     sys/kern             imgact_gzip.c 
> >  >   Log:
> >  >   Correctly return ENOEXEC for really short zipped files.  The way this is
> >  >   done is less-than cute, but this whole file is suffering from some amoun
>     t
> >  >   of bitrot.  Execution of zipped files should probably be implemented in 
>     a
> >  >   manner similar to that of #!/interpreted files.
> >   
> > Do this mean that it should be possible to run gzip'ed executables??? I
> > though it was not possible with ELF binaries. Even after this commit I
> > am unable to do it:
> > $ cp /bin/ls .
> > $ gzip ls
> > $ ./ls.gz 
> > bash: ./ls.gz: cannot execute binary file
> > Output=32 Inflate_error=1 igz.error=8 error2=0 where=180
> 
> No, imgact_gzip has it's own a.out executable decoder hardwired into it and
> this can't be easily changed to support ELF without a LOT of work.  I half
> wonder if it might be better to gzip -d the executable stream into some
> sort of anon backed vnode and then pass that back into the exec system.  That
> way it would work for any supported format etc.

Or just use gzexe.

> 
> Cheers,
> -Peter
> 

 Brian Fundakowski Feldman      _ __ ___ ____  ___ ___ ___  
 green@FreeBSD.org                   _ __ ___ | _ ) __|   \ 
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