/* 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 **,						int mode);	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;	const struct cred	*cred;}; /* * 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, const struct cred *cred);extern void	lockd_down(struct net *net); #endif /* LINUX_LOCKD_BIND_H */