• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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 SM_MAXSTRLEN		1024
17 #define SM_PRIV_SIZE		16
18 
19 struct nsm_private {
20 	unsigned char		data[SM_PRIV_SIZE];
21 };
22 
23 struct svc_rqst;
24 
25 #define NLM_MAXCOOKIELEN    	32
26 #define NLM_MAXSTRLEN		1024
27 
28 #define	nlm_granted		cpu_to_be32(NLM_LCK_GRANTED)
29 #define	nlm_lck_denied		cpu_to_be32(NLM_LCK_DENIED)
30 #define	nlm_lck_denied_nolocks	cpu_to_be32(NLM_LCK_DENIED_NOLOCKS)
31 #define	nlm_lck_blocked		cpu_to_be32(NLM_LCK_BLOCKED)
32 #define	nlm_lck_denied_grace_period	cpu_to_be32(NLM_LCK_DENIED_GRACE_PERIOD)
33 
34 #define nlm_drop_reply		cpu_to_be32(30000)
35 
36 /* Lock info passed via NLM */
37 struct nlm_lock {
38 	char *			caller;
39 	unsigned int		len; 	/* length of "caller" */
40 	struct nfs_fh		fh;
41 	struct xdr_netobj	oh;
42 	u32			svid;
43 	struct file_lock	fl;
44 };
45 
46 /*
47  *	NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes.
48  *	FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to
49  *	32 bytes.
50  */
51 
52 struct nlm_cookie
53 {
54 	unsigned char data[NLM_MAXCOOKIELEN];
55 	unsigned int len;
56 };
57 
58 /*
59  * Generic lockd arguments for all but sm_notify
60  */
61 struct nlm_args {
62 	struct nlm_cookie	cookie;
63 	struct nlm_lock		lock;
64 	u32			block;
65 	u32			reclaim;
66 	u32			state;
67 	u32			monitor;
68 	u32			fsm_access;
69 	u32			fsm_mode;
70 };
71 
72 typedef struct nlm_args nlm_args;
73 
74 /*
75  * Generic lockd result
76  */
77 struct nlm_res {
78 	struct nlm_cookie	cookie;
79 	__be32			status;
80 	struct nlm_lock		lock;
81 };
82 
83 /*
84  * statd callback when client has rebooted
85  */
86 struct nlm_reboot {
87 	char			*mon;
88 	unsigned int		len;
89 	u32			state;
90 	struct nsm_private	priv;
91 };
92 
93 /*
94  * Contents of statd callback when monitored host rebooted
95  */
96 #define NLMSVC_XDRSIZE		sizeof(struct nlm_args)
97 
98 int	nlmsvc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *);
99 int	nlmsvc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *);
100 int	nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
101 int	nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *);
102 int	nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
103 int	nlmsvc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
104 int	nlmsvc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
105 int	nlmsvc_encode_void(struct svc_rqst *, __be32 *, void *);
106 int	nlmsvc_decode_void(struct svc_rqst *, __be32 *, void *);
107 int	nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *);
108 int	nlmsvc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *);
109 int	nlmsvc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *);
110 int	nlmsvc_decode_reboot(struct svc_rqst *, __be32 *, struct nlm_reboot *);
111 /*
112 int	nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
113 int	nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
114 int	nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
115 int	nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
116  */
117 
118 #endif /* LOCKD_XDR_H */
119