Commit | Line | Data |
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1da177e4 LT |
1 | #ifndef _LINUX_SUNRPC_RPC_PIPE_FS_H |
2 | #define _LINUX_SUNRPC_RPC_PIPE_FS_H | |
3 | ||
4 | #ifdef __KERNEL__ | |
5 | ||
6 | struct rpc_pipe_msg { | |
7 | struct list_head list; | |
8 | void *data; | |
9 | size_t len; | |
10 | size_t copied; | |
11 | int errno; | |
12 | }; | |
13 | ||
14 | struct rpc_pipe_ops { | |
15 | ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t); | |
16 | ssize_t (*downcall)(struct file *, const char __user *, size_t); | |
17 | void (*release_pipe)(struct inode *); | |
c3810608 | 18 | int (*open_pipe)(struct inode *); |
1da177e4 LT |
19 | void (*destroy_msg)(struct rpc_pipe_msg *); |
20 | }; | |
21 | ||
22 | struct rpc_inode { | |
23 | struct inode vfs_inode; | |
24 | void *private; | |
25 | struct list_head pipe; | |
26 | struct list_head in_upcall; | |
6e84c7b6 | 27 | struct list_head in_downcall; |
1da177e4 LT |
28 | int pipelen; |
29 | int nreaders; | |
30 | int nwriters; | |
03a1256f | 31 | int nkern_readwriters; |
1da177e4 LT |
32 | wait_queue_head_t waitq; |
33 | #define RPC_PIPE_WAIT_FOR_OPEN 1 | |
34 | int flags; | |
52bad64d | 35 | struct delayed_work queue_timeout; |
b693ba4a | 36 | const struct rpc_pipe_ops *ops; |
1da177e4 LT |
37 | }; |
38 | ||
39 | static inline struct rpc_inode * | |
40 | RPC_I(struct inode *inode) | |
41 | { | |
42 | return container_of(inode, struct rpc_inode, vfs_inode); | |
43 | } | |
44 | ||
45 | extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *); | |
46 | ||
458adb8b | 47 | struct rpc_clnt; |
23ac6581 | 48 | extern struct dentry *rpc_create_client_dir(struct dentry *, struct qstr *, struct rpc_clnt *); |
458adb8b | 49 | extern int rpc_remove_client_dir(struct dentry *); |
b693ba4a TM |
50 | extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *, |
51 | const struct rpc_pipe_ops *, int flags); | |
5d67476f | 52 | extern int rpc_unlink(struct dentry *); |
54281548 TM |
53 | extern struct vfsmount *rpc_get_mount(void); |
54 | extern void rpc_put_mount(void); | |
7531d692 TM |
55 | extern int register_rpc_pipefs(void); |
56 | extern void unregister_rpc_pipefs(void); | |
1da177e4 LT |
57 | |
58 | #endif | |
59 | #endif |