Date: Tue, 22 Jun 1999 07:16:46 +0800 From: Peter Wemm <peter@netplex.com.au> To: Jean-Marc Zucconi <jmz@FreeBSD.ORG> Cc: hoek@FreeBSD.ORG, cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG Subject: Re: cvs commit: src/sys/kern imgact_gzip.c Message-ID: <19990621231649.336E375@overcee.netplex.com.au> In-Reply-To: Your message of "Mon, 21 Jun 1999 23:40:01 %2B0200." <199906212140.XAA00694@qix.jmz.org>
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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.
Cheers,
-Peter
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