File: /usr/include/linux/lockd/xdr.h

1     /*
2      * linux/include/linux/lockd/xdr.h
3      *
4      * XDR types for the NLM protocol
5      *
6      * Copyright (C) 1996 Olaf Kirch <okir@monad.swb.de>
7      */
8     
9     #ifndef LOCKD_XDR_H
10     #define LOCKD_XDR_H
11     
12     #include <linux/fs.h>
13     #include <linux/nfs.h>
14     #include <linux/sunrpc/xdr.h>
15     
16     #define NLM_MAXSTRLEN		1024
17     
18     #define QUADLEN(len)		(((len) + 3) >> 2)
19     
20     #define	nlm_granted		__constant_htonl(NLM_LCK_GRANTED)
21     #define	nlm_lck_denied		__constant_htonl(NLM_LCK_DENIED)
22     #define	nlm_lck_denied_nolocks	__constant_htonl(NLM_LCK_DENIED_NOLOCKS)
23     #define	nlm_lck_blocked		__constant_htonl(NLM_LCK_BLOCKED)
24     #define	nlm_lck_denied_grace_period	__constant_htonl(NLM_LCK_DENIED_GRACE_PERIOD)
25     
26     /* Lock info passed via NLM */
27     struct nlm_lock {
28     	char *			caller;
29     	struct nfs_fh		fh;
30     	struct xdr_netobj	oh;
31     	struct file_lock	fl;
32     };
33     
34     /*
35      *	NLM cookies. Technically they can be 1K, Nobody uses over 8 bytes
36      *	however.
37      */
38      
39     struct nlm_cookie
40     {
41     	unsigned char data[8];
42     	unsigned int len;
43     };
44     
45     /*
46      * Generic lockd arguments for all but sm_notify
47      */
48     struct nlm_args {
49     	struct nlm_cookie	cookie;
50     	struct nlm_lock		lock;
51     	u32			block;
52     	u32			reclaim;
53     	u32			state;
54     	u32			monitor;
55     	u32			fsm_access;
56     	u32			fsm_mode;
57     };
58     
59     typedef struct nlm_args nlm_args;
60     
61     /*
62      * Generic lockd result
63      */
64     struct nlm_res {
65     	struct nlm_cookie	cookie;
66     	u32			status;
67     	struct nlm_lock		lock;
68     };
69     
70     /*
71      * statd callback when client has rebooted
72      */
73     struct nlm_reboot {
74     	char *		mon;
75     	int		len;
76     	u32		state;
77     	u32		addr;
78     };
79     
80     /*
81      * Contents of statd callback when monitored host rebooted
82      */
83     #define NLMSVC_XDRSIZE		sizeof(struct nlm_args)
84     
85     void	nlmxdr_init(void);
86     int	nlmsvc_decode_testargs(struct svc_rqst *, u32 *, struct nlm_args *);
87     int	nlmsvc_encode_testres(struct svc_rqst *, u32 *, struct nlm_res *);
88     int	nlmsvc_decode_lockargs(struct svc_rqst *, u32 *, struct nlm_args *);
89     int	nlmsvc_decode_cancargs(struct svc_rqst *, u32 *, struct nlm_args *);
90     int	nlmsvc_decode_unlockargs(struct svc_rqst *, u32 *, struct nlm_args *);
91     int	nlmsvc_encode_res(struct svc_rqst *, u32 *, struct nlm_res *);
92     int	nlmsvc_decode_res(struct svc_rqst *, u32 *, struct nlm_res *);
93     int	nlmsvc_encode_void(struct svc_rqst *, u32 *, void *);
94     int	nlmsvc_decode_void(struct svc_rqst *, u32 *, void *);
95     int	nlmsvc_decode_shareargs(struct svc_rqst *, u32 *, struct nlm_args *);
96     int	nlmsvc_encode_shareres(struct svc_rqst *, u32 *, struct nlm_res *);
97     int	nlmsvc_decode_notify(struct svc_rqst *, u32 *, struct nlm_args *);
98     int	nlmsvc_decode_reboot(struct svc_rqst *, u32 *, struct nlm_reboot *);
99     /*
100     int	nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
101     int	nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
102     int	nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
103     int	nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
104      */
105     
106     #endif /* LOCKD_XDR_H */
107