root/include/linux/sunrpc/rpc_pipe_fs.h

INCLUDED FROM

DEFINITIONS

1. RPC_I

#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