03a1256f06
This allows us to correctly deduce when we need to remove the pipe. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H
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#define _LINUX_SUNRPC_RPC_PIPE_FS_H
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#ifdef __KERNEL__
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struct rpc_pipe_msg {
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struct list_head list;
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void *data;
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size_t len;
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size_t copied;
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int errno;
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};
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struct rpc_pipe_ops {
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ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t);
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ssize_t (*downcall)(struct file *, const char __user *, size_t);
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void (*release_pipe)(struct inode *);
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void (*destroy_msg)(struct rpc_pipe_msg *);
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};
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struct rpc_inode {
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struct inode vfs_inode;
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void *private;
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struct list_head pipe;
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struct list_head in_upcall;
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struct list_head in_downcall;
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int pipelen;
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int nreaders;
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int nwriters;
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int nkern_readwriters;
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wait_queue_head_t waitq;
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#define RPC_PIPE_WAIT_FOR_OPEN 1
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int flags;
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struct rpc_pipe_ops *ops;
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struct delayed_work queue_timeout;
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};
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static inline struct rpc_inode *
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RPC_I(struct inode *inode)
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{
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return container_of(inode, struct rpc_inode, vfs_inode);
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}
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extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *);
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extern struct dentry *rpc_mkdir(char *, struct rpc_clnt *);
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extern int rpc_rmdir(struct dentry *);
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extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *, struct rpc_pipe_ops *, int flags);
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extern int rpc_unlink(struct dentry *);
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extern struct vfsmount *rpc_get_mount(void);
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extern void rpc_put_mount(void);
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extern int register_rpc_pipefs(void);
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extern void unregister_rpc_pipefs(void);
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#endif
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#endif
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