CRED: Pass credentials through dentry_open()

Pass credentials through dentry_open() so that the COW creds patch can have
SELinux's flush_unauthorized_files() pass the appropriate creds back to itself
when it opens its null chardev.

The security_dentry_open() call also now takes a creds pointer, as does the
dentry_open hook in struct security_operations.

Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: James Morris <jmorris@namei.org>
Signed-off-by: James Morris <jmorris@namei.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/nfsctl.c b/fs/nfsctl.c
index aed8145d9087..cc4ef2642a51 100644
--- a/fs/nfsctl.c
+++ b/fs/nfsctl.c
@@ -41,7 +41,8 @@ static struct file *do_open(char *name, int flags)
                 error = may_open(&nd, MAY_WRITE, FMODE_WRITE);
 
         if (!error)
-                return dentry_open(nd.path.dentry, nd.path.mnt, flags);
+                return dentry_open(nd.path.dentry, nd.path.mnt, flags,
+                                   current_cred());
 
         path_put(&nd.path);
         return ERR_PTR(error);