Messages in this thread | | | Date | Tue, 22 Apr 2014 14:55:37 +0200 | Subject | Re: [PATCH 0/6] File Sealing & memfd_create() | From | David Herrmann <> |
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Hi
On Tue, Apr 22, 2014 at 2:44 PM, Florian Weimer <fweimer@redhat.com> wrote: > I didn't find that very convincing. But in v2, seals are monotonic, so > checking them should be reliable enough.
Ok.
> What happens when you create a loop device on a write-sealed descriptor?
Any write-back to the loop-device will fail with EPERM as soon as the fd gets write-sealed. See __do_lo_send_write() in drivers/block/loop.c. It's up to the loop-device to forward the error via bio_endio() to the caller for proper error-handling.
Thanks David
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