1 // SPDX-License-Identifier: GPL-2.0
3 * This file contains all the stubs needed when communicating with lockd.
4 * This level of indirection is necessary so we can run nfsd+lockd without
5 * requiring the nfs client to be compiled in/loaded, and vice versa.
7 * Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
10 #include <linux/file.h>
11 #include <linux/lockd/bind.h>
15 #define NFSDDBG_FACILITY NFSDDBG_LOCKD
17 #ifdef CONFIG_LOCKD_V4
18 #define nlm_stale_fh nlm4_stale_fh
19 #define nlm_failed nlm4_failed
21 #define nlm_stale_fh nlm_lck_denied_nolocks
22 #define nlm_failed nlm_lck_denied_nolocks
25 * Note: we hold the dentry use count while the file is open.
28 nlm_fopen(struct svc_rqst *rqstp, struct nfs_fh *f, struct file **filp,
35 /* must initialize before using! but maxsize doesn't matter */
37 fh.fh_handle.fh_size = f->size;
38 memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
41 access = (mode == O_WRONLY) ? NFSD_MAY_WRITE : NFSD_MAY_READ;
42 access |= NFSD_MAY_LOCK;
43 nfserr = nfsd_open(rqstp, &fh, S_IFREG, access, filp);
45 /* We return nlm error codes as nlm doesn't know
46 * about nfsd, but nfsd does know about nlm..
52 return nlm_drop_reply;
61 nlm_fclose(struct file *filp)
66 static const struct nlmsvc_binding nfsd_nlm_ops = {
67 .fopen = nlm_fopen, /* open file for locking */
68 .fclose = nlm_fclose, /* close file */
74 dprintk("nfsd: initializing lockd\n");
75 nlmsvc_ops = &nfsd_nlm_ops;
79 nfsd_lockd_shutdown(void)