Prevent a process from opening a file more than once
bernd at petrovitsch.priv.at
Wed Sep 28 08:12:07 EDT 2011
First, no need to send HTML parts.
On Mit, 2011-09-28 at 07:41 +0200, Michael Blizek wrote:
> You could create something like this:
Yes, that's the solution.
But keep in mind that userspace also have the dup() and dup2() sys-call
which duplicate the file descriptor (within the same process) and there
is AFAIK no way to even detect that - let alone disallow it.
And after a fork(), it's more or less the same (except that the open
file descriptors belong to different processes ....).
Generally, I wonder why that is even necessary.
Bernd Petrovitsch Email : bernd at petrovitsch.priv.at
LUGA : http://www.luga.at
More information about the Kernelnewbies