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 */
27struct nlm_lock {
28	char *			caller;
29	int			len; 	/* length of "caller" */
30	struct nfs_fh		fh;
31	struct xdr_netobj	oh;
32	struct file_lock	fl;
33};
34
35/*
36 *	NLM cookies. Technically they can be 1K, Nobody uses over 8 bytes
37 *	however.
38 */
39
40struct nlm_cookie
41{
42	unsigned char data[8];
43	unsigned int len;
44};
45
46/*
47 * Generic lockd arguments for all but sm_notify
48 */
49struct nlm_args {
50	struct nlm_cookie	cookie;
51	struct nlm_lock		lock;
52	u32			block;
53	u32			reclaim;
54	u32			state;
55	u32			monitor;
56	u32			fsm_access;
57	u32			fsm_mode;
58};
59
60typedef struct nlm_args nlm_args;
61
62/*
63 * Generic lockd result
64 */
65struct nlm_res {
66	struct nlm_cookie	cookie;
67	u32			status;
68	struct nlm_lock		lock;
69};
70
71/*
72 * statd callback when client has rebooted
73 */
74struct nlm_reboot {
75	char *		mon;
76	int		len;
77	u32		state;
78	u32		addr;
79};
80
81/*
82 * Contents of statd callback when monitored host rebooted
83 */
84#define NLMSVC_XDRSIZE		sizeof(struct nlm_args)
85
86int	nlmsvc_decode_testargs(struct svc_rqst *, u32 *, struct nlm_args *);
87int	nlmsvc_encode_testres(struct svc_rqst *, u32 *, struct nlm_res *);
88int	nlmsvc_decode_lockargs(struct svc_rqst *, u32 *, struct nlm_args *);
89int	nlmsvc_decode_cancargs(struct svc_rqst *, u32 *, struct nlm_args *);
90int	nlmsvc_decode_unlockargs(struct svc_rqst *, u32 *, struct nlm_args *);
91int	nlmsvc_encode_res(struct svc_rqst *, u32 *, struct nlm_res *);
92int	nlmsvc_decode_res(struct svc_rqst *, u32 *, struct nlm_res *);
93int	nlmsvc_encode_void(struct svc_rqst *, u32 *, void *);
94int	nlmsvc_decode_void(struct svc_rqst *, u32 *, void *);
95int	nlmsvc_decode_shareargs(struct svc_rqst *, u32 *, struct nlm_args *);
96int	nlmsvc_encode_shareres(struct svc_rqst *, u32 *, struct nlm_res *);
97int	nlmsvc_decode_notify(struct svc_rqst *, u32 *, struct nlm_args *);
98int	nlmsvc_decode_reboot(struct svc_rqst *, u32 *, struct nlm_reboot *);
99/*
100int	nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
101int	nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
102int	nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
103int	nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
104 */
105
106#endif /* LOCKD_XDR_H */
107