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
19struct nsm_private {
20	unsigned char		data[SM_PRIV_SIZE];
21};
22
23struct 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 */
37struct 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
52struct 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 */
61struct 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
72typedef struct nlm_args nlm_args;
73
74/*
75 * Generic lockd result
76 */
77struct 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 */
86struct 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
98int	nlmsvc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *);
99int	nlmsvc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *);
100int	nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
101int	nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *);
102int	nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
103int	nlmsvc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
104int	nlmsvc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
105int	nlmsvc_encode_void(struct svc_rqst *, __be32 *, void *);
106int	nlmsvc_decode_void(struct svc_rqst *, __be32 *, void *);
107int	nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *);
108int	nlmsvc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *);
109int	nlmsvc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *);
110int	nlmsvc_decode_reboot(struct svc_rqst *, __be32 *, struct nlm_reboot *);
111/*
112int	nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
113int	nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
114int	nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
115int	nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
116 */
117
118#endif /* LOCKD_XDR_H */
119