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  * Functions exported by the lockd module
  37  */
  38 extern struct nlm_host *nlmclnt_init(const char *server_name,
  39                                         const struct sockaddr *server_address,
  40                                         size_t server_addrlen,
  41                                         unsigned short protocol,
  42                                         u32 nfs_version);
  43 extern void     nlmclnt_done(struct nlm_host *host);
  44
  45 extern int      nlmclnt_proc(struct inode *, int, struct file_lock *);
  46 extern int      lockd_up(int proto);
  47 extern void     lockd_down(void);
  48
  49 unsigned long get_nfs_grace_period(void);
  50
  51 #ifdef CONFIG_NFSD_V4
  52 unsigned long get_nfs4_grace_period(void);
  53 #else
  54 static inline unsigned long get_nfs4_grace_period(void) {return 0;}
  55 #endif
  56
  57 #endif /* LINUX_LOCKD_BIND_H */