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nfsd: add a per-net-namespace struct for nfsd

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Eventually, we'll need this when nfsd gets containerized fully. For
now, create a struct on a per-net-namespace basis that will just hold
a pointer to the cld_net structure. That struct will hold all of the
per-net data that we need for the cld tracker.

Eventually we can add other pernet objects to struct nfsd_net.

Signed-off-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
This commit is contained in:
Jeff Layton 2012-03-21 09:52:05 -04:00 committed by J. Bruce Fields
parent b3537c35c2
commit 7ea34ac15e
2 changed files with 48 additions and 1 deletions
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34
fs/nfsd/netns.h Normal file
View File

@ -0,0 +1,34 @@
/*
* per net namespace data structures for nfsd
*
* Copyright (C) 2012, Jeff Layton <jlayton@redhat.com>
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 51
* Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#ifndef __NFSD_NETNS_H__
#define __NFSD_NETNS_H__
#include <net/net_namespace.h>
#include <net/netns/generic.h>
struct cld_net;
struct nfsd_net {
struct cld_net *cld_net;
};
extern int nfsd_net_id;
#endif /* __NFSD_NETNS_H__ */

15
fs/nfsd/nfsctl.c
View File

@ -19,6 +19,7 @@
#include "nfsd.h"
#include "cache.h"
#include "fault_inject.h"
#include "netns.h"
/*
* We have a single directory with several nodes in it.
@ -1124,14 +1125,23 @@ static int create_proc_exports_entry(void)
}
#endif
int nfsd_net_id;
static struct pernet_operations nfsd_net_ops = {
.id = &nfsd_net_id,
.size = sizeof(struct nfsd_net),
};
static int __init init_nfsd(void)
{
int retval;
printk(KERN_INFO "Installing knfsd (copyright (C) 1996 okir@monad.swb.de).\n");
retval = register_pernet_subsys(&nfsd_net_ops);
if (retval < 0)
return retval;
retval = nfsd4_init_slabs();
if (retval)
return retval;
goto out_unregister_pernet;
nfs4_state_init();
retval = nfsd_fault_inject_init(); /* nfsd fault injection controls */
if (retval)
@ -1169,6 +1179,8 @@ out_free_stat:
nfsd_fault_inject_cleanup();
out_free_slabs:
nfsd4_free_slabs();
out_unregister_pernet:
unregister_pernet_subsys(&nfsd_net_ops);
return retval;
}
@ -1184,6 +1196,7 @@ static void __exit exit_nfsd(void)
nfsd4_free_slabs();
nfsd_fault_inject_cleanup();
unregister_filesystem(&nfsd_fs_type);
unregister_pernet_subsys(&nfsd_net_ops);
}
MODULE_AUTHOR("Olaf Kirch <okir@monad.swb.de>");