1 files changed, 81 insertions, 0 deletions
diff --git a/include/linux/lockd/bind.h b/include/linux/lockd/bind.h
new file mode 100644
index 000000000..053a4ef3d
--- /dev/null
+++ b/include/linux/lockd/bind.h
@@ -0,0 +1,81 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * linux/include/linux/lockd/bind.h
+ *
+ * This is the part of lockd visible to nfsd and the nfs client.
+ *
+ * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
+ */
+
+#ifndef LINUX_LOCKD_BIND_H
+#define LINUX_LOCKD_BIND_H
+
+#include <linux/lockd/nlm.h>
+/* need xdr-encoded error codes too, so... */
+#include <linux/lockd/xdr.h>
+#ifdef CONFIG_LOCKD_V4
+#include <linux/lockd/xdr4.h>
+#endif
+
+/* Dummy declarations */
+struct svc_rqst;
+struct rpc_task;
+
+/*
+ * This is the set of functions for lockd->nfsd communication
+ */
+struct nlmsvc_binding {
+	__be32			(*fopen)(struct svc_rqst *,
+						struct nfs_fh *,
+						struct file **);
+	void			(*fclose)(struct file *);
+};
+
+extern const struct nlmsvc_binding *nlmsvc_ops;
+
+/*
+ * Similar to nfs_client_initdata, but without the NFS-specific
+ * rpc_ops field.
+ */
+struct nlmclnt_initdata {
+	const char		*hostname;
+	const struct sockaddr	*address;
+	size_t			addrlen;
+	unsigned short		protocol;
+	u32			nfs_version;
+	int			noresvport;
+	struct net		*net;
+	const struct nlmclnt_operations	*nlmclnt_ops;
+};
+
+/*
+ * Functions exported by the lockd module
+ */
+
+extern struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init);
+extern void	nlmclnt_done(struct nlm_host *host);
+
+/*
+ * NLM client operations provide a means to modify RPC processing of NLM
+ * requests.  Callbacks receive a pointer to data passed into the call to
+ * nlmclnt_proc().
+ */
+struct nlmclnt_operations {
+	/* Called on successful allocation of nlm_rqst, use for allocation or
+	 * reference counting. */
+	void (*nlmclnt_alloc_call)(void *);
+
+	/* Called in rpc_task_prepare for unlock.  A return value of true
+	 * indicates the callback has put the task to sleep on a waitqueue
+	 * and NLM should not call rpc_call_start(). */
+	bool (*nlmclnt_unlock_prepare)(struct rpc_task*, void *);
+
+	/* Called when the nlm_rqst is freed, callbacks should clean up here */
+	void (*nlmclnt_release_call)(void *);
+};
+
+extern int	nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl, void *data);
+extern int	lockd_up(struct net *net);
+extern void	lockd_down(struct net *net);
+
+#endif /* LINUX_LOCKD_BIND_H */