From a36d06a84568d0e9eab610ba667971fd30500801 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= <u.kleine-koenig@pengutronix.de>
Date: Fri, 21 Oct 2016 20:48:18 +0200
Subject: [PATCH] memtool: let mw create the target file if it doesn't exist
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Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
 memtool.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/memtool.c b/memtool.c
index 5603d35..28d886e 100644
--- a/memtool.c
+++ b/memtool.c
@@ -208,7 +208,8 @@ static void *memmap(const char *file, off_t addr, size_t *size, int readonly)
 	if (pagesize < 0)
 		pagesize = 4096;
 
-	memfd = open(file, readonly ? O_RDONLY : O_RDWR);
+	memfd = open(file, readonly ? O_RDONLY : (O_RDWR | O_CREAT),
+		     S_IRUSR | S_IWUSR);
 	if (memfd < 0) {
 		perror("open");
 		return NULL;