netns : close all sockets at unshare ?
Daniel Lezcano
dlezcano at fr.ibm.com
Tue Oct 2 14:45:24 PDT 2007
Hi,
I was looking at some cornercases and trying to figure out what happens
if someone does:
1 - fd = socket(...)
2 - unshare(CLONE_NEWNET)
3 - bind(fd, ...) / listen(fd, ...)
There is here an interaction between two namespaces.
Trying to catch all these little tricky paths everywhere with the
network namespace is painful, perhaps we should consider a more radical
solution.
Shall we close all fd sockets when doing an unshare ? like a
close-on-exec behavior ?
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