Fixed MTP to work with TWRP

fs/jffs2/xattr_user.c

@@ -0,0 +1,55 @@
+/*
+ * 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_user_getxattr(struct dentry *dentry, const char *name,
+			       void *buffer, size_t size, int type)
+{
+	if (!strcmp(name, ""))
+		return -EINVAL;
+	return do_jffs2_getxattr(dentry->d_inode, JFFS2_XPREFIX_USER,
+				 name, buffer, size);
+}
+
+static int jffs2_user_setxattr(struct dentry *dentry, const char *name,
+		const void *buffer, size_t size, int flags, int type)
+{
+	if (!strcmp(name, ""))
+		return -EINVAL;
+	return do_jffs2_setxattr(dentry->d_inode, JFFS2_XPREFIX_USER,
+				 name, buffer, size, flags);
+}
+
+static size_t jffs2_user_listxattr(struct dentry *dentry, char *list,
+		size_t list_size, const char *name, size_t name_len, int type)
+{
+	size_t retlen = XATTR_USER_PREFIX_LEN + name_len + 1;
+
+	if (list && retlen <= list_size) {
+		strcpy(list, XATTR_USER_PREFIX);
+		strcpy(list + XATTR_USER_PREFIX_LEN, name);
+	}
+
+	return retlen;
+}
+
+const struct xattr_handler jffs2_user_xattr_handler = {
+	.prefix = XATTR_USER_PREFIX,
+	.list = jffs2_user_listxattr,
+	.set = jffs2_user_setxattr,
+	.get = jffs2_user_getxattr
+};