include/linux/lockd/bind.h

   1 /*
   2  * linux/include/linux/lockd/bind.h
   3  *
   4  * This is the part of lockd visible to nfsd and the nfs client.
   5  *
   6  * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
   7  */
   8
   9 #ifndef LINUX_LOCKD_BIND_H
  10 #define LINUX_LOCKD_BIND_H
  11
  12 #include <linux/lockd/nlm.h>
  13 /* need xdr-encoded error codes too, so... */
  14 #include <linux/lockd/xdr.h>
  15 #ifdef CONFIG_LOCKD_V4
  16 #include <linux/lockd/xdr4.h>
  17 #endif
  18
  19 /* Dummy declarations */
  20 struct svc_rqst;
  21
  22 /*
  23  * This is the set of functions for lockd->nfsd communication
  24  */
  25 struct nlmsvc_binding {
  26         __be32                  (*fopen)(struct svc_rqst *,
  27                                                 struct nfs_fh *,
  28                                                 struct file **);
  29         void                    (*fclose)(struct file *);
  30         unsigned long           (*get_grace_period)(void);
  31 };
  32
  33 extern struct nlmsvc_binding *  nlmsvc_ops;
  34
  35 /*
  36  * Similar to nfs_client_initdata, but without the NFS-specific
  37  * rpc_ops field.
  38  */
  39 struct nlmclnt_initdata {
  40         const char              *hostname;
  41         const struct sockaddr   *address;
  42         size_t                  addrlen;
  43         unsigned short          protocol;
  44         u32                     nfs_version;
  45 };
  46
  47 /*
  48  * Functions exported by the lockd module
  49  */
  50
  51 extern struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init);
  52 extern void     nlmclnt_done(struct nlm_host *host);
  53
  54 extern int      nlmclnt_proc(struct nlm_host *host, int cmd,
  55                                         struct file_lock *fl);
  56 extern int      lockd_up(int proto);
  57 extern void     lockd_down(void);
  58
  59 unsigned long get_nfs_grace_period(void);
  60
  61 #ifdef CONFIG_NFSD_V4
  62 unsigned long get_nfs4_grace_period(void);
  63 #else
  64 static inline unsigned long get_nfs4_grace_period(void) {return 0;}
  65 #endif
  66
  67 #endif /* LINUX_LOCKD_BIND_H */