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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 | ||
4dceef96 BF |
6 | #include <linux/workqueue.h> |
7 | ||
1da177e4 LT |
8 | struct rpc_pipe_msg { |
9 | struct list_head list; | |
10 | void *data; | |
11 | size_t len; | |
12 | size_t copied; | |
13 | int errno; | |
14 | }; | |
15 | ||
16 | struct rpc_pipe_ops { | |
17 | ssize_t (*upcall)(struct file *, struct rpc_pipe_msg *, char __user *, size_t); | |
18 | ssize_t (*downcall)(struct file *, const char __user *, size_t); | |
19 | void (*release_pipe)(struct inode *); | |
c3810608 | 20 | int (*open_pipe)(struct inode *); |
1da177e4 LT |
21 | void (*destroy_msg)(struct rpc_pipe_msg *); |
22 | }; | |
23 | ||
ba9e0975 | 24 | struct rpc_pipe { |
1da177e4 LT |
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; | |
1da177e4 LT |
31 | #define RPC_PIPE_WAIT_FOR_OPEN 1 |
32 | int flags; | |
52bad64d | 33 | struct delayed_work queue_timeout; |
b693ba4a | 34 | const struct rpc_pipe_ops *ops; |
766347be | 35 | spinlock_t lock; |
c239d83b | 36 | struct dentry *dentry; |
1da177e4 LT |
37 | }; |
38 | ||
ba9e0975 SK |
39 | struct rpc_inode { |
40 | struct inode vfs_inode; | |
41 | void *private; | |
42 | struct rpc_pipe *pipe; | |
591ad7fe | 43 | wait_queue_head_t waitq; |
ba9e0975 SK |
44 | }; |
45 | ||
1da177e4 LT |
46 | static inline struct rpc_inode * |
47 | RPC_I(struct inode *inode) | |
48 | { | |
49 | return container_of(inode, struct rpc_inode, vfs_inode); | |
50 | } | |
51 | ||
eee17325 SK |
52 | enum { |
53 | SUNRPC_PIPEFS_NFS_PRIO, | |
54 | SUNRPC_PIPEFS_RPC_PRIO, | |
55 | }; | |
56 | ||
2d00131a SK |
57 | extern int rpc_pipefs_notifier_register(struct notifier_block *); |
58 | extern void rpc_pipefs_notifier_unregister(struct notifier_block *); | |
59 | ||
60 | enum { | |
61 | RPC_PIPEFS_MOUNT, | |
62 | RPC_PIPEFS_UMOUNT, | |
63 | }; | |
64 | ||
432eb1a5 SK |
65 | extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb, |
66 | const unsigned char *dir_name); | |
c21a588f SK |
67 | extern void rpc_pipefs_init_net(struct net *net); |
68 | extern struct super_block *rpc_get_sb_net(const struct net *net); | |
69 | extern void rpc_put_sb_net(const struct net *net); | |
432eb1a5 | 70 | |
c1225158 PT |
71 | extern ssize_t rpc_pipe_generic_upcall(struct file *, struct rpc_pipe_msg *, |
72 | char __user *, size_t); | |
d706ed1f | 73 | extern int rpc_queue_upcall(struct rpc_pipe *, struct rpc_pipe_msg *); |
1da177e4 | 74 | |
458adb8b | 75 | struct rpc_clnt; |
23ac6581 | 76 | extern struct dentry *rpc_create_client_dir(struct dentry *, struct qstr *, struct rpc_clnt *); |
458adb8b | 77 | extern int rpc_remove_client_dir(struct dentry *); |
8854e82d TM |
78 | |
79 | struct cache_detail; | |
80 | extern struct dentry *rpc_create_cache_dir(struct dentry *, | |
81 | struct qstr *, | |
64f1426f | 82 | umode_t umode, |
8854e82d TM |
83 | struct cache_detail *); |
84 | extern void rpc_remove_cache_dir(struct dentry *); | |
85 | ||
eee17325 SK |
86 | extern int rpc_rmdir(struct dentry *dentry); |
87 | ||
c239d83b SK |
88 | struct rpc_pipe *rpc_mkpipe_data(const struct rpc_pipe_ops *ops, int flags); |
89 | void rpc_destroy_pipe_data(struct rpc_pipe *pipe); | |
90 | extern struct dentry *rpc_mkpipe_dentry(struct dentry *, const char *, void *, | |
91 | struct rpc_pipe *); | |
5d67476f | 92 | extern int rpc_unlink(struct dentry *); |
7531d692 TM |
93 | extern int register_rpc_pipefs(void); |
94 | extern void unregister_rpc_pipefs(void); | |
1da177e4 LT |
95 | |
96 | #endif | |
97 | #endif |