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xdr.h
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1 /*
2  * linux/include/linux/lockd/xdr.h
3  *
4  * XDR types for the NLM protocol
5  *
6  * Copyright (C) 1996 Olaf Kirch <[email protected]>
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 */
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