From: Junjiro Okajima <hooanon05@xxxxxxxxxxx>
initial commit
aufs special handling inode attributes on XFS branch in linux-2.6.24 and later
Signed-off-by: Junjiro Okajima <hooanon05@xxxxxxxxxxx>
---
fs/aufs/br_xfs.c | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 69 insertions(+), 0 deletions(-)
diff --git a/fs/aufs/br_xfs.c b/fs/aufs/br_xfs.c
new file mode 100644
index 0000000..360ffaa
--- /dev/null
+++ b/fs/aufs/br_xfs.c
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2008 Junjiro Okajima
+ *
+ * This program, aufs 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 St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/*
+ * special handling inode attributes on XFS branch in linux-2.6.24 and later
+ *
+ * $Id: br_xfs.c,v 1.2 2008/04/21 01:33:00 sfjro Exp $
+ */
+
+#include "aufs.h"
+
+/* h_mnt can be NULL, is it safe? */
+dev_t au_h_rdev(struct inode *h_inode, struct vfsmount *h_mnt,
+ struct dentry *h_dentry)
+{
+ dev_t rdev;
+ int err;
+ struct kstat st;
+
+ LKTRTrace("hi%lu\n", h_inode->i_ino);
+ if (h_dentry)
+ LKTRTrace("%.*s\n", AuDLNPair(h_dentry));
+
+ rdev = h_inode->i_rdev;
+ if (!rdev || !au_test_xfs(h_inode->i_sb))
+ goto out;
+
+ rdev = 0;
+ if (!h_dentry) {
+ err = 0;
+ h_dentry = d_find_alias(h_inode);
+ if (unlikely(!h_dentry))
+ goto failure;
+ err = PTR_ERR(h_dentry);
+ if (IS_ERR(h_dentry)) {
+ h_dentry = NULL;
+ goto failure;
+ }
+ LKTRTrace("%.*s\n", AuDLNPair(h_dentry));
+ } else
+ dget(h_dentry);
+
+ err = vfsub_getattr(h_mnt, h_dentry, &st, /*dlgt*/0);
+ dput(h_dentry);
+ if (!err) {
+ rdev = st.rdev;
+ goto out; /* success */
+ }
+
+ failure:
+ AuIOErr("failed rdev for XFS inode, hi%lu, %d\n", h_inode->i_ino, err);
+ out:
+ return rdev;
+}
--
1.4.4.4
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