Return-Path: linux-nfs-owner@vger.kernel.org Received: from mail-gy0-f174.google.com ([209.85.160.174]:42978 "EHLO mail-gy0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756016Ab2CUNwT (ORCPT ); Wed, 21 Mar 2012 09:52:19 -0400 Received: by mail-gy0-f174.google.com with SMTP id r11so920975ghr.19 for ; Wed, 21 Mar 2012 06:52:18 -0700 (PDT) From: Jeff Layton To: bfields@fieldses.org Cc: linux-nfs@vger.kernel.org Subject: [PATCH v10 4/8] nfsd: add a per-net-namespace struct for nfsd Date: Wed, 21 Mar 2012 09:52:05 -0400 Message-Id: <1332337929-18580-5-git-send-email-jlayton@redhat.com> In-Reply-To: <1332337929-18580-1-git-send-email-jlayton@redhat.com> References: <1332337929-18580-1-git-send-email-jlayton@redhat.com> Sender: linux-nfs-owner@vger.kernel.org List-ID: 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 --- fs/nfsd/netns.h | 34 ++++++++++++++++++++++++++++++++++ fs/nfsd/nfsctl.c | 15 ++++++++++++++- 2 files changed, 48 insertions(+), 1 deletions(-) create mode 100644 fs/nfsd/netns.h diff --git a/fs/nfsd/netns.h b/fs/nfsd/netns.h new file mode 100644 index 0000000..12e0cff --- /dev/null +++ b/fs/nfsd/netns.h @@ -0,0 +1,34 @@ +/* + * per net namespace data structures for nfsd + * + * Copyright (C) 2012, Jeff Layton + * + * 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 +#include + +struct cld_net; + +struct nfsd_net { + struct cld_net *cld_net; +}; + +extern int nfsd_net_id; +#endif /* __NFSD_NETNS_H__ */ diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c index 64c24af..141197e 100644 --- a/fs/nfsd/nfsctl.c +++ b/fs/nfsd/nfsctl.c @@ -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 "); -- 1.7.7.6