linux/include/linux/sunrpc/rpc_pipe_fs.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H
#define _LINUX_SUNRPC_RPC_PIPE_FS_H

#include <linux/workqueue.h>

struct rpc_pipe_dir_head { … };

struct rpc_pipe_dir_object_ops;
struct rpc_pipe_dir_object { … };

struct rpc_pipe_dir_object_ops { … };

struct rpc_pipe_msg { … };

struct rpc_pipe_ops { … };

struct rpc_pipe { … };

struct rpc_inode { … };

static inline struct rpc_inode *
RPC_I(struct inode *inode)
{ … }

enum { … };

extern int rpc_pipefs_notifier_register(struct notifier_block *);
extern void rpc_pipefs_notifier_unregister(struct notifier_block *);

enum { … };

extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb,
				      const unsigned char *dir_name);
extern int rpc_pipefs_init_net(struct net *net);
extern void rpc_pipefs_exit_net(struct net *net);
extern struct super_block *rpc_get_sb_net(const struct net *net);
extern void rpc_put_sb_net(const struct net *net);

extern ssize_t rpc_pipe_generic_upcall(struct file *, struct rpc_pipe_msg *,
				       char __user *, size_t);
extern int rpc_queue_upcall(struct rpc_pipe *, struct rpc_pipe_msg *);

/* returns true if the msg is in-flight, i.e., already eaten by the peer */
static inline bool rpc_msg_is_inflight(const struct rpc_pipe_msg *msg) { … }

struct rpc_clnt;
extern struct dentry *rpc_create_client_dir(struct dentry *, const char *, struct rpc_clnt *);
extern int rpc_remove_client_dir(struct rpc_clnt *);

extern void rpc_init_pipe_dir_head(struct rpc_pipe_dir_head *pdh);
extern void rpc_init_pipe_dir_object(struct rpc_pipe_dir_object *pdo,
		const struct rpc_pipe_dir_object_ops *pdo_ops,
		void *pdo_data);
extern int rpc_add_pipe_dir_object(struct net *net,
		struct rpc_pipe_dir_head *pdh,
		struct rpc_pipe_dir_object *pdo);
extern void rpc_remove_pipe_dir_object(struct net *net,
		struct rpc_pipe_dir_head *pdh,
		struct rpc_pipe_dir_object *pdo);
extern struct rpc_pipe_dir_object *rpc_find_or_alloc_pipe_dir_object(
		struct net *net,
		struct rpc_pipe_dir_head *pdh,
		int (*match)(struct rpc_pipe_dir_object *, void *),
		struct rpc_pipe_dir_object *(*alloc)(void *),
		void *data);

struct cache_detail;
extern struct dentry *rpc_create_cache_dir(struct dentry *,
					   const char *,
					   umode_t umode,
					   struct cache_detail *);
extern void rpc_remove_cache_dir(struct dentry *);

struct rpc_pipe *rpc_mkpipe_data(const struct rpc_pipe_ops *ops, int flags);
void rpc_destroy_pipe_data(struct rpc_pipe *pipe);
extern struct dentry *rpc_mkpipe_dentry(struct dentry *, const char *, void *,
					struct rpc_pipe *);
extern int rpc_unlink(struct dentry *);
extern int register_rpc_pipefs(void);
extern void unregister_rpc_pipefs(void);

extern bool gssd_running(struct net *net);

#endif