LXR linux/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 SM_MAXSTRLEN            1024
  17#define SM_PRIV_SIZE            16
  18
  19struct nsm_private {
  20        unsigned char           data[SM_PRIV_SIZE];
  21};
  22
  23struct 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 */
  37struct 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 
  52struct 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 */
  61struct 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
  72typedef struct nlm_args nlm_args;
  73
  74/*
  75 * Generic lockd result
  76 */
  77struct 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 */
  86struct 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
  98int     nlmsvc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *);
  99int     nlmsvc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *);
 100int     nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
 101int     nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *);
 102int     nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
 103int     nlmsvc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
 104int     nlmsvc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
 105int     nlmsvc_encode_void(struct svc_rqst *, __be32 *, void *);
 106int     nlmsvc_decode_void(struct svc_rqst *, __be32 *, void *);
 107int     nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *);
 108int     nlmsvc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *);
 109int     nlmsvc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *);
 110int     nlmsvc_decode_reboot(struct svc_rqst *, __be32 *, struct nlm_reboot *);
 111/*
 112int     nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
 113int     nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
 114int     nlmclt_encode_cancargs(struct rpc_rqst *, u32 *, struct nlm_args *);
 115int     nlmclt_encode_unlockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
 116 */
 117
 118#endif /* LOCKD_XDR_H */
 119