1 files changed, 62 insertions, 0 deletions
diff --git a/fs/jffs2/xattr_trusted.c b/fs/jffs2/xattr_trusted.c
new file mode 100644
index 000000000000..a562da0d6a26
--- /dev/null
+++ b/fs/jffs2/xattr_trusted.c
@@ -0,0 +1,62 @@
+/*
+ * JFFS2 -- Journalling Flash File System, Version 2.
+ *
+ * Copyright © 2006  NEC Corporation
+ *
+ * Created by KaiGai Kohei <kaigai@ak.jp.nec.com>
+ *
+ * For licensing information, see the file 'LICENCE' in this directory.
+ *
+ */
+
+#include <linux/kernel.h>
+#include <linux/fs.h>
+#include <linux/jffs2.h>
+#include <linux/xattr.h>
+#include <linux/mtd/mtd.h>
+#include "nodelist.h"
+
+static int jffs2_trusted_getxattr(const struct xattr_handler *handler,
+				  struct dentry *dentry, const char *name,
+				  void *buffer, size_t size)
+{
+	if (!strcmp(name, ""))
+		return -EINVAL;
+	return do_jffs2_getxattr(d_inode(dentry), JFFS2_XPREFIX_TRUSTED,
+				 name, buffer, size);
+}
+
+static int jffs2_trusted_setxattr(const struct xattr_handler *handler,
+				  struct dentry *dentry, const char *name,
+				  const void *buffer, size_t size, int flags)
+{
+	if (!strcmp(name, ""))
+		return -EINVAL;
+	return do_jffs2_setxattr(d_inode(dentry), JFFS2_XPREFIX_TRUSTED,
+				 name, buffer, size, flags);
+}
+
+static size_t jffs2_trusted_listxattr(const struct xattr_handler *handler,
+				      struct dentry *dentry, char *list,
+				      size_t list_size, const char *name,
+				      size_t name_len)
+{
+	size_t retlen = XATTR_TRUSTED_PREFIX_LEN + name_len + 1;
+
+	if (!capable(CAP_SYS_ADMIN))
+		return 0;
+
+	if (list && retlen<=list_size) {
+		strcpy(list, XATTR_TRUSTED_PREFIX);
+		strcpy(list + XATTR_TRUSTED_PREFIX_LEN, name);
+	}
+
+	return retlen;
+}
+
+const struct xattr_handler jffs2_trusted_xattr_handler = {
+	.prefix = XATTR_TRUSTED_PREFIX,
+	.list = jffs2_trusted_listxattr,
+	.set = jffs2_trusted_setxattr,
+	.get = jffs2_trusted_getxattr
+};