Re: [9front] [PATCH] kernel: disallow executing from #| or #d

[ori@eigenstate.org]

Quoth Jacob Moody <moody@mail.posixcafe.org>:
> Hello,
> 
> I noticed that you could execute from #| and #d.
> ex:
> 
> cpu% bind '#|' /n/pipetest
> cpu% /n/pipetest/data1 &
> cpu% echo '#!/bin/rc' >> /n/pipetest/data
> cpu% echo 'echo hello' >> /n/pipetest/data
> cpu% hello
> 
> I believe this would also work for binaries
> if the writer could predict what parts of the binary
> the kernel will want to read. I am inclined to
> block this behavior but would be curious what others
> think. Included is a patch to error on OEXEC opens
> in devdup and devpipe.

I think all files should be the same, as much as
they can be -- we shouldn't necessarily need to
care if we have a pipe or not.