include/linux/lockd/xdr.h

   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 */
  26 struct nlm_lock {
  27         char *                  caller;
  28         int                     len;    /* length of "caller" */
  29         struct nfs_fh           fh;
  30         struct xdr_netobj       oh;
  31         struct file_lock        fl;
  32 };
  33
  34 /*
  35  *      NLM cookies. Technically they can be 1K, but Linux only uses 8 bytes.
  36  *      FreeBSD uses 16, Apple Mac OS X 10.3 uses 20. Therefore we set it to
  37  *      32 bytes.
  38  */
  39
  40 struct nlm_cookie
  41 {
  42         unsigned char data[NLM_MAXCOOKIELEN];
  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 */