1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
|
/*
* linux/fs/nfsd/lockd.c
*
* This file contains all the stubs needed when communicating with lockd.
* This level of indirection is necessary so we can run nfsd+lockd without
* requiring the nfs client to be compiled in/loaded, and vice versa.
*
* Copyright (C) 1996, Olaf Kirch <okir@monad.swb.de>
*/
#include <linux/types.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svc.h>
#include <linux/nfsd/nfsd.h>
#include <linux/lockd/bind.h>
#define NFSDDBG_FACILITY NFSDDBG_LOCKD
/*
* Note: we hold the dentry use count while the file is open.
*/
static u32
nlm_fopen(struct svc_rqst *rqstp, struct knfs_fh *f, struct file *filp)
{
u32 nfserr;
struct svc_fh fh;
/* must initialize before using! */
fh_init(&fh);
fh.fh_handle = *f;
fh.fh_export = NULL;
nfserr = nfsd_open(rqstp, &fh, S_IFREG, 0, filp);
if (!nfserr)
dget(filp->f_dentry);
fh_put(&fh);
return nfserr;
}
static void
nlm_fclose(struct file *filp)
{
nfsd_close(filp);
dput(filp->f_dentry);
}
struct nlmsvc_binding nfsd_nlm_ops = {
exp_readlock, /* lock export table for reading */
exp_unlock, /* unlock export table */
exp_getclient, /* look up NFS client */
nlm_fopen, /* open file for locking */
nlm_fclose, /* close file */
exp_nlmdetach, /* lockd shutdown notification */
};
/*
* When removing an NFS client entry, notify lockd that it is gone.
* FIXME: We should do the same when unexporting an NFS volume.
*/
void
nfsd_lockd_unexport(struct svc_client *clnt)
{
nlmsvc_invalidate_client(clnt);
}
void
nfsd_lockd_init(void)
{
dprintk("nfsd: initializing lockd\n");
nlmsvc_ops = &nfsd_nlm_ops;
}
void
nfsd_lockd_shutdown(void)
{
nlmsvc_ops = NULL;
}
|
