| | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
| | 2 | /* |
| | 3 | * linux/include/linux/lockd/bind.h |
| | 4 | * |
| | 5 | * This is the part of lockd visible to nfsd and the nfs client. |
| | 6 | * |
| | 7 | * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de> |
| | 8 | */ |
| | 9 | |
| | 10 | #ifndef LINUX_LOCKD_BIND_H |
| | 11 | #define LINUX_LOCKD_BIND_H |
| | 12 | |
| | 13 | #include <linux/lockd/nlm.h> |
| | 14 | /* need xdr-encoded error codes too, so... */ |
| | 15 | #include <linux/lockd/xdr.h> |
| | 16 | #ifdef CONFIG_LOCKD_V4 |
| | 17 | #include <linux/lockd/xdr4.h> |
| | 18 | #endif |
| | 19 | |
| | 20 | /* Dummy declarations */ |
| | 21 | struct svc_rqst; |
| | 22 | struct rpc_task; |
| | 23 | struct rpc_clnt; |
| | 24 | |
| | 25 | /* |
| | 26 | * This is the set of functions for lockd->nfsd communication |
| | 27 | */ |
| | 28 | struct nlmsvc_binding { |
| | 29 | __be32 (*fopen)(struct svc_rqst *, |
| | 30 | struct nfs_fh *, |
| | 31 | struct file **, |
| | 32 | int mode); |
| | 33 | void (*fclose)(struct file *); |
| | 34 | }; |
| | 35 | |
| | 36 | extern const struct nlmsvc_binding *nlmsvc_ops; |
| | 37 | |
| | 38 | /* |
| | 39 | * Similar to nfs_client_initdata, but without the NFS-specific |
| | 40 | * rpc_ops field. |
| | 41 | */ |
| | 42 | struct nlmclnt_initdata { |
| | 43 | const char *hostname; |
| | 44 | const struct sockaddr *address; |
| | 45 | size_t addrlen; |
| | 46 | unsigned short protocol; |
| | 47 | u32 nfs_version; |
| | 48 | int noresvport; |
| | 49 | struct net *net; |
| | 50 | const struct nlmclnt_operations *nlmclnt_ops; |
| | 51 | const struct cred *cred; |
| | 52 | }; |
| | 53 | |
| | 54 | /* |
| | 55 | * Functions exported by the lockd module |
| | 56 | */ |
| | 57 | |
| | 58 | extern struct nlm_host *nlmclnt_init(const struct nlmclnt_initdata *nlm_init); |
| | 59 | extern void nlmclnt_done(struct nlm_host *host); |
| | 60 | extern struct rpc_clnt *nlmclnt_rpc_clnt(struct nlm_host *host); |
| | 61 | |
| | 62 | /* |
| | 63 | * NLM client operations provide a means to modify RPC processing of NLM |
| | 64 | * requests. Callbacks receive a pointer to data passed into the call to |
| | 65 | * nlmclnt_proc(). |
| | 66 | */ |
| | 67 | struct nlmclnt_operations { |
| | 68 | /* Called on successful allocation of nlm_rqst, use for allocation or |
| | 69 | * reference counting. */ |
| | 70 | void (*nlmclnt_alloc_call)(void *); |
| | 71 | |
| | 72 | /* Called in rpc_task_prepare for unlock. A return value of true |
| | 73 | * indicates the callback has put the task to sleep on a waitqueue |
| | 74 | * and NLM should not call rpc_call_start(). */ |
| | 75 | bool (*nlmclnt_unlock_prepare)(struct rpc_task*, void *); |
| | 76 | |
| | 77 | /* Called when the nlm_rqst is freed, callbacks should clean up here */ |
| | 78 | void (*nlmclnt_release_call)(void *); |
| | 79 | }; |
| | 80 | |
| | 81 | extern int nlmclnt_proc(struct nlm_host *host, int cmd, struct file_lock *fl, void *data); |
| | 82 | extern int lockd_up(struct net *net, const struct cred *cred); |
| | 83 | extern void lockd_down(struct net *net); |
| | 84 | |
| | 85 | #endif /* LINUX_LOCKD_BIND_H */ |
projects / linux-2.6-block.git / blame_incremental