Re: [Openvpn-devel] Opened file descriptors in script calls

[Christoph P. <cp...@ch...>]

Aaron Sethman wrote:

> Here is a simple little replacement for system() that does close file
> descriptors.  The main issue with it is though, it ends up picking an
> arbitrary number of fds to close.  I picked closing 0 to 99.

I don't think this is necessary. Every file descriptor has a "close on 
exec" flag that you can set with fcntl(). Then, you can use plain 
system(). It should work like this:

   fcntl(fd, F_SETFD, FD_CLOEXEC);

Ideally, one would do this for each file descriptor as it is opened.

Hope this helps,
chrisp

-- 
chrisp a.k.a. Christoph Pfisterer   "A computer scientist is
cp...@ch... - http://chrisp.de      someone who fixes things
PGP key & geek code available        that aren't broken."