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@xxxxxxxxxx>
---
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 <jlayton@xxxxxxxxxx>
+ *
+ * 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__ */
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@xxxxxxxxxxxx).\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@xxxxxxxxxxxx>");
--
1.7.7.6
--
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