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Fix btrfs subvolume snapshot dir perms for user namespaces

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Make sure btrfs mounted subvolumes are owned properly when a remapped
root exists (user namespaces are enabled, for example)

Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
This commit is contained in:
Phil Estes 2016-01-07 23:05:28 -05:00
parent 611d5e4eeb
commit 72e65e8793
1 changed files with 8 additions and 0 deletions
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8
daemon/graphdriver/btrfs/btrfs.go
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@ -266,6 +266,14 @@ func (d *Driver) Create(id, parent, mountLabel string) error {
}
}
// if we have a remapped root (user namespaces enabled), change the created snapshot
// dir ownership to match
if rootUID != 0 || rootGID != 0 {
if err := os.Chown(path.Join(subvolumes, id), rootUID, rootGID); err != nil {
return err
}
}
return label.Relabel(path.Join(subvolumes, id), mountLabel, false)
}