Quoting Rob van der Hoeven (robvanderhoeven@xxxxxxxx):
> Hi,
>
> I was wondering if it is possible to send a file descriptor to a program
> running in another mount namespace. Sendmsg/recvmsg can pass fd's in the
> ancillary data and this works great until my program switches to another
> mount namespace using:
>
> unshare(CLONE_NEWNS)
> pivot_root(".", "./us_rootfs")
>
> If there is a way to pass descriptors across mount namespaces then it
> would greatly benefit my program so I hope this is possible.
Yes, it is possible. Your email makes it sound like you've tried
and it didn't work for you, in which case a short test case showing
what fails might be useful here.
-serge
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