Re: more fexecve questions

[Christoph Badura <bad%bsd.de@localhost>]

On Tue, Sep 10, 2019 at 09:45:50PM +0200, Christoph Badura wrote:
> This is to catch the following case(s): The file might have the
> following permissions "--x--x--x" (or equivalent where the open()ing
> process doesn't have read or write permission).  Since you can open such
                                                             ^can't open such
> a file for reading or writing (except as root) you need an additional
> flag to open() to obtain a file descriptor that can be passed to
> fexecve().  That's what O_EXEC is for.  Whether the receiving process
> can successfully fexecve(2) such a file descriptor is another matter.
> That's what the "execute permission is checked by fexecve()" specifies.
> 
> --chris