NFS: When mounting, don't share filesystems between different user namespaces

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If two different containers that share the same network namespace attempt
to mount the same filesystem, we should not allow them to share the same
super block if they do not share the same user namespace, since the
user mappings on the wire will need to differ.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>

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Trond Myklebust 2019-04-24 17:46:49 -04:00 • committed by Anna Schumaker

parent c207db2f5d

commit 3b7eb5e35d

1 changed files with 17 additions and 0 deletions

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fs/nfs/super.c

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