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#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H

#define _LINUX_SUNRPC_RPC_PIPE_FS_H

#ifdef __KERNEL__

struct rpc_pipe_msg {

        struct list_head list;

        void *data;

        size_t len;

        size_t copied;

        int errno;

};

struct rpc_pipe_ops {

        ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t);

        ssize_t (*downcall)(struct file *, const char __user *, size_t);

        void (*release_pipe)(struct inode *);

        void (*destroy_msg)(struct rpc_pipe_msg *);

};

struct rpc_inode {

        struct inode vfs_inode;

        void *private;

        struct list_head pipe;

        struct list_head in_upcall;

        struct list_head in_downcall;

        int pipelen;

        int nreaders;

        int nwriters;

        int nkern_readwriters;

        wait_queue_head_t waitq;

#define RPC_PIPE_WAIT_FOR_OPEN  1

        int flags;

        struct rpc_pipe_ops *ops;

        struct delayed_work queue_timeout;

};

static inline struct rpc_inode *

RPC_I(struct inode *inode)

{

        return container_of(inode, struct rpc_inode, vfs_inode);

}

extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *);

extern struct dentry *rpc_mkdir(char *, struct rpc_clnt *);

extern int rpc_rmdir(struct dentry *);

extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *, struct rpc_pipe_ops *, int flags);

extern int rpc_unlink(struct dentry *);

extern struct vfsmount *rpc_get_mount(void);

extern void rpc_put_mount(void);

extern int register_rpc_pipefs(void);

extern void unregister_rpc_pipefs(void);

#endif

#endif