1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */ 2*4882a593Smuzhiyun /* 3*4882a593Smuzhiyun * linux/include/linux/lockd/bind.h 4*4882a593Smuzhiyun * 5*4882a593Smuzhiyun * This is the part of lockd visible to nfsd and the nfs client. 6*4882a593Smuzhiyun * 7*4882a593Smuzhiyun * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> 8*4882a593Smuzhiyun */ 9*4882a593Smuzhiyun 10*4882a593Smuzhiyun #ifndef LINUX_LOCKD_BIND_H 11*4882a593Smuzhiyun #define LINUX_LOCKD_BIND_H 12*4882a593Smuzhiyun 13*4882a593Smuzhiyun #include <linux/lockd/nlm.h> 14*4882a593Smuzhiyun /* need xdr-encoded error codes too, so... */ 15*4882a593Smuzhiyun #include <linux/lockd/xdr.h> 16*4882a593Smuzhiyun #ifdef CONFIG_LOCKD_V4 17*4882a593Smuzhiyun #include <linux/lockd/xdr4.h> 18*4882a593Smuzhiyun #endif 19*4882a593Smuzhiyun 20*4882a593Smuzhiyun /* Dummy declarations */ 21*4882a593Smuzhiyun struct svc_rqst; 22*4882a593Smuzhiyun struct rpc_task; 23*4882a593Smuzhiyun 24*4882a593Smuzhiyun /* 25*4882a593Smuzhiyun * This is the set of functions for lockd->nfsd communication 26*4882a593Smuzhiyun */ 27*4882a593Smuzhiyun struct nlmsvc_binding { 28*4882a593Smuzhiyun __be32 (*fopen)(struct svc_rqst *, 29*4882a593Smuzhiyun struct nfs_fh *, 30*4882a593Smuzhiyun struct file **); 31*4882a593Smuzhiyun void (*fclose)(struct file *); 32*4882a593Smuzhiyun }; 33*4882a593Smuzhiyun 34*4882a593Smuzhiyun extern const struct nlmsvc_binding *nlmsvc_ops; 35*4882a593Smuzhiyun 36*4882a593Smuzhiyun /* 37*4882a593Smuzhiyun * Similar to nfs_client_initdata, but without the NFS-specific 38*4882a593Smuzhiyun * rpc_ops field. 39*4882a593Smuzhiyun */ 40*4882a593Smuzhiyun struct nlmclnt_initdata { 41*4882a593Smuzhiyun const char *hostname; 42*4882a593Smuzhiyun const struct sockaddr *address; 43*4882a593Smuzhiyun size_t addrlen; 44*4882a593Smuzhiyun unsigned short protocol; 45*4882a593Smuzhiyun u32 nfs_version; 46*4882a593Smuzhiyun int noresvport; 47*4882a593Smuzhiyun struct net *net; 48*4882a593Smuzhiyun const struct nlmclnt_operations *nlmclnt_ops; 49*4882a593Smuzhiyun const struct cred *cred; 50*4882a593Smuzhiyun }; 51*4882a593Smuzhiyun 52*4882a593Smuzhiyun /* 53*4882a593Smuzhiyun * Functions exported by the lockd module 54*4882a593Smuzhiyun */ 55*4882a593Smuzhiyun 56*4882a593Smuzhiyun extern struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init); 57*4882a593Smuzhiyun extern void nlmclnt_done(struct nlm_host *host); 58*4882a593Smuzhiyun 59*4882a593Smuzhiyun /* 60*4882a593Smuzhiyun * NLM client operations provide a means to modify RPC processing of NLM 61*4882a593Smuzhiyun * requests. Callbacks receive a pointer to data passed into the call to 62*4882a593Smuzhiyun * nlmclnt_proc(). 63*4882a593Smuzhiyun */ 64*4882a593Smuzhiyun struct nlmclnt_operations { 65*4882a593Smuzhiyun /* Called on successful allocation of nlm_rqst, use for allocation or 66*4882a593Smuzhiyun * reference counting. */ 67*4882a593Smuzhiyun void (*nlmclnt_alloc_call)(void *); 68*4882a593Smuzhiyun 69*4882a593Smuzhiyun /* Called in rpc_task_prepare for unlock. A return value of true 70*4882a593Smuzhiyun * indicates the callback has put the task to sleep on a waitqueue 71*4882a593Smuzhiyun * and NLM should not call rpc_call_start(). */ 72*4882a593Smuzhiyun bool (*nlmclnt_unlock_prepare)(struct rpc_task*, void *); 73*4882a593Smuzhiyun 74*4882a593Smuzhiyun /* Called when the nlm_rqst is freed, callbacks should clean up here */ 75*4882a593Smuzhiyun void (*nlmclnt_release_call)(void *); 76*4882a593Smuzhiyun }; 77*4882a593Smuzhiyun 78*4882a593Smuzhiyun extern int nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl, void *data); 79*4882a593Smuzhiyun extern int lockd_up(struct net *net, const struct cred *cred); 80*4882a593Smuzhiyun extern void lockd_down(struct net *net); 81*4882a593Smuzhiyun 82*4882a593Smuzhiyun #endif /* LINUX_LOCKD_BIND_H */ 83