commit 00996ae81967aac08d5d6f0e88ce4f9a800876f1
Author: Yiannis Pericleous <[EMAIL PROTECTED]>
Date: Fri May 11 17:31:23 2007 -0400
export: export ops get_parent, get the parent inode from odf fs's get_parent
diff --git a/fs/unionfs/export.c b/fs/unionfs/export.c
index c1560c4..7c3107d 100644
--- a/fs/unionfs/export.c
+++ b/fs/unionfs/export.c
@@ -1,4 +1,51 @@
#include "union.h"
+static struct dentry *unionfs_get_parent(struct dentry *child)
+{
+ struct odf_sb_info *odf;
+ struct super_block *odf_sb;
+ struct inode *odf_i, *i;
+ struct dentry *odf_child, *odf_parent, *res ;
+
+ res = ERR_PTR(-EACCES);
+ odf = UNIONFS_SB(child->d_sb)->odf;
+ odf_sb = odf->sb->d_sb;
+
+ if (!odf_sb->s_export_op || !odf_sb->s_export_op->get_parent)
+ goto out;
+
+ odf_i = iget(odf_sb, child->d_inode->i_ino);
+ if (!odf_i)
+ goto out;
+
+ odf_child = d_alloc_anon(odf_i);
+ if (!odf_child) {
+ iput(odf_i);
+ res = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+
+ odf_parent = odf_sb->s_export_op->get_parent(odf_child);
+ if (IS_ERR(odf_parent)) {
+ iput(odf_i);
+ res = odf_parent;
+ goto out;
+ }
+
+ i = iget(child->d_sb, odf_parent->d_inode->i_ino);
+ if (!i)
+ goto out;
+ res = d_alloc_anon(i);
+ if (!res) {
+ iput(i);
+ res = ERR_PTR(-ENOMEM);
+ goto out;
+ }
+ res->d_op = &unionfs_dops;
+out:
+ return res;
+}
+
struct export_operations unionfs_export_ops = {
+ .get_parent = unionfs_get_parent
};
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