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