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authorPatrick McHardy <kaber@trash.net>2013-03-31 18:10:34 +0200
committerPatrick McHardy <kaber@trash.net>2013-03-31 18:10:34 +0200
commit70711d223510ba1773cfe1d7770a56141c815ff8 (patch)
tree4a71f38a3a554ddecaa31b7d8c6bc49b7d1705b4 /fs/nfs/nfs4getroot.c
parentd53b4ed072d9779cdf53582c46436dec06d0961f (diff)
parent19f949f52599ba7c3f67a5897ac6be14bfcb1200 (diff)
Merge tag 'v3.8' of /home/kaber/src/repos/linux
Linux 3.8 Signed-off-by: Patrick McHardy <kaber@trash.net> Conflicts: include/linux/Kbuild include/linux/netlink.h
Diffstat (limited to 'fs/nfs/nfs4getroot.c')
-rw-r--r--fs/nfs/nfs4getroot.c50
1 files changed, 50 insertions, 0 deletions
diff --git a/fs/nfs/nfs4getroot.c b/fs/nfs/nfs4getroot.c
new file mode 100644
index 00000000000..549462e5b9b
--- /dev/null
+++ b/fs/nfs/nfs4getroot.c
@@ -0,0 +1,50 @@
+/*
+* Copyright (C) 2006 Red Hat, Inc. All Rights Reserved.
+* Written by David Howells (dhowells@redhat.com)
+*/
+
+#include <linux/nfs_fs.h>
+#include "nfs4_fs.h"
+#include "internal.h"
+
+#define NFSDBG_FACILITY NFSDBG_CLIENT
+
+int nfs4_get_rootfh(struct nfs_server *server, struct nfs_fh *mntfh)
+{
+ struct nfs_fsinfo fsinfo;
+ int ret = -ENOMEM;
+
+ dprintk("--> nfs4_get_rootfh()\n");
+
+ fsinfo.fattr = nfs_alloc_fattr();
+ if (fsinfo.fattr == NULL)
+ goto out;
+
+ /* Start by getting the root filehandle from the server */
+ ret = nfs4_proc_get_rootfh(server, mntfh, &fsinfo);
+ if (ret < 0) {
+ dprintk("nfs4_get_rootfh: getroot error = %d\n", -ret);
+ goto out;
+ }
+
+ if (!(fsinfo.fattr->valid & NFS_ATTR_FATTR_TYPE)
+ || !S_ISDIR(fsinfo.fattr->mode)) {
+ printk(KERN_ERR "nfs4_get_rootfh:"
+ " getroot encountered non-directory\n");
+ ret = -ENOTDIR;
+ goto out;
+ }
+
+ if (fsinfo.fattr->valid & NFS_ATTR_FATTR_V4_REFERRAL) {
+ printk(KERN_ERR "nfs4_get_rootfh:"
+ " getroot obtained referral\n");
+ ret = -EREMOTE;
+ goto out;
+ }
+
+ memcpy(&server->fsid, &fsinfo.fattr->fsid, sizeof(server->fsid));
+out:
+ nfs_free_fattr(fsinfo.fattr);
+ dprintk("<-- nfs4_get_rootfh() = %d\n", ret);
+ return ret;
+}