mirror of
https://github.com/torvalds/linux.git
synced 2024-11-22 12:11:40 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
80 lines
1.6 KiB
C
80 lines
1.6 KiB
C
/*
|
|
* 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/fs.h>
|
|
#include <linux/file.h>
|
|
#include <linux/mount.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 nfs_fh *f, struct file **filp)
|
|
{
|
|
u32 nfserr;
|
|
struct svc_fh fh;
|
|
|
|
/* must initialize before using! but maxsize doesn't matter */
|
|
fh_init(&fh,0);
|
|
fh.fh_handle.fh_size = f->size;
|
|
memcpy((char*)&fh.fh_handle.fh_base, f->data, f->size);
|
|
fh.fh_export = NULL;
|
|
|
|
exp_readlock();
|
|
nfserr = nfsd_open(rqstp, &fh, S_IFREG, MAY_LOCK, filp);
|
|
fh_put(&fh);
|
|
rqstp->rq_client = NULL;
|
|
exp_readunlock();
|
|
/* nlm and nfsd don't share error codes.
|
|
* we invent: 0 = no error
|
|
* 1 = stale file handle
|
|
* 2 = other error
|
|
*/
|
|
switch (nfserr) {
|
|
case nfs_ok:
|
|
return 0;
|
|
case nfserr_stale:
|
|
return 1;
|
|
default:
|
|
return 2;
|
|
}
|
|
}
|
|
|
|
static void
|
|
nlm_fclose(struct file *filp)
|
|
{
|
|
fput(filp);
|
|
}
|
|
|
|
static struct nlmsvc_binding nfsd_nlm_ops = {
|
|
.fopen = nlm_fopen, /* open file for locking */
|
|
.fclose = nlm_fclose, /* close file */
|
|
};
|
|
|
|
void
|
|
nfsd_lockd_init(void)
|
|
{
|
|
dprintk("nfsd: initializing lockd\n");
|
|
nlmsvc_ops = &nfsd_nlm_ops;
|
|
}
|
|
|
|
void
|
|
nfsd_lockd_shutdown(void)
|
|
{
|
|
nlmsvc_ops = NULL;
|
|
}
|