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Linux/include/linux/lockd/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 <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 */
 27 struct 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  
 40 struct 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  */
 49 struct 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 
 60 typedef struct nlm_args nlm_args;
 61 
 62 /*
 63  * Generic lockd result
 64  */
 65 struct 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  */
 74 struct nlm_reboot {
 75         char *          mon;
 76         int             len;
 77         u32             state;
 78         u32             addr;
 79         u32             vers;
 80         u32             proto;
 81 };
 82 
 83 /*
 84  * Contents of statd callback when monitored host rebooted
 85  */
 86 #define NLMSVC_XDRSIZE          sizeof(struct nlm_args)
 87 
 88 int     nlmsvc_decode_testargs(struct svc_rqst *, u32 *, struct nlm_args *);
 89 int     nlmsvc_encode_testres(struct svc_rqst *, u32 *, struct nlm_res *);
 90 int     nlmsvc_decode_lockargs(struct svc_rqst *, u32 *, struct nlm_args *);
 91 int     nlmsvc_decode_cancargs(struct svc_rqst *, u32 *, struct nlm_args *);
 92 int     nlmsvc_decode_unlockargs(struct svc_rqst *, u32 *, struct nlm_args *);
 93 int     nlmsvc_encode_res(struct svc_rqst *, u32 *, struct nlm_res *);
 94 int     nlmsvc_decode_res(struct svc_rqst *, u32 *, struct nlm_res *);
 95 int     nlmsvc_encode_void(struct svc_rqst *, u32 *, void *);
 96 int     nlmsvc_decode_void(struct svc_rqst *, u32 *, void *);
 97 int     nlmsvc_decode_shareargs(struct svc_rqst *, u32 *, struct nlm_args *);
 98 int     nlmsvc_encode_shareres(struct svc_rqst *, u32 *, struct nlm_res *);
 99 int     nlmsvc_decode_notify(struct svc_rqst *, u32 *, struct nlm_args *);
100 int     nlmsvc_decode_reboot(struct svc_rqst *, u32 *, struct nlm_reboot *);
101 /*
102 int     nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
103 int     nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
104 int     nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
105 int     nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
106  */
107 
108 #endif /* LOCKD_XDR_H */
109 

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