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 | ||
24 | struct rpc_inode { | |
25 | struct inode vfs_inode; | |
26 | void *private; | |
27 | struct list_head pipe; | |
28 | struct list_head in_upcall; | |
6e84c7b6 | 29 | struct list_head in_downcall; |
1da177e4 LT |
30 | int pipelen; |
31 | int nreaders; | |
32 | int nwriters; | |
33 | wait_queue_head_t waitq; | |
34 | #define RPC_PIPE_WAIT_FOR_OPEN 1 | |
35 | int flags; | |
52bad64d | 36 | struct delayed_work queue_timeout; |
b693ba4a | 37 | const struct rpc_pipe_ops *ops; |
1da177e4 LT |
38 | }; |
39 | ||
40 | static inline struct rpc_inode * | |
41 | RPC_I(struct inode *inode) | |
42 | { | |
43 | return container_of(inode, struct rpc_inode, vfs_inode); | |
44 | } | |
45 | ||
2d00131a SK |
46 | extern int rpc_pipefs_notifier_register(struct notifier_block *); |
47 | extern void rpc_pipefs_notifier_unregister(struct notifier_block *); | |
48 | ||
49 | enum { | |
50 | RPC_PIPEFS_MOUNT, | |
51 | RPC_PIPEFS_UMOUNT, | |
52 | }; | |
53 | ||
432eb1a5 SK |
54 | extern struct dentry *rpc_d_lookup_sb(const struct super_block *sb, |
55 | const unsigned char *dir_name); | |
c21a588f SK |
56 | extern void rpc_pipefs_init_net(struct net *net); |
57 | extern struct super_block *rpc_get_sb_net(const struct net *net); | |
58 | extern void rpc_put_sb_net(const struct net *net); | |
432eb1a5 | 59 | |
c1225158 PT |
60 | extern ssize_t rpc_pipe_generic_upcall(struct file *, struct rpc_pipe_msg *, |
61 | char __user *, size_t); | |
1da177e4 LT |
62 | extern int rpc_queue_upcall(struct inode *, struct rpc_pipe_msg *); |
63 | ||
458adb8b | 64 | struct rpc_clnt; |
23ac6581 | 65 | extern struct dentry *rpc_create_client_dir(struct dentry *, struct qstr *, struct rpc_clnt *); |
458adb8b | 66 | extern int rpc_remove_client_dir(struct dentry *); |
8854e82d TM |
67 | |
68 | struct cache_detail; | |
69 | extern struct dentry *rpc_create_cache_dir(struct dentry *, | |
70 | struct qstr *, | |
64f1426f | 71 | umode_t umode, |
8854e82d TM |
72 | struct cache_detail *); |
73 | extern void rpc_remove_cache_dir(struct dentry *); | |
74 | ||
b693ba4a TM |
75 | extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *, |
76 | const struct rpc_pipe_ops *, int flags); | |
5d67476f | 77 | extern int rpc_unlink(struct dentry *); |
54281548 TM |
78 | extern struct vfsmount *rpc_get_mount(void); |
79 | extern void rpc_put_mount(void); | |
7531d692 TM |
80 | extern int register_rpc_pipefs(void); |
81 | extern void unregister_rpc_pipefs(void); | |
1da177e4 LT |
82 | |
83 | #endif | |
84 | #endif |