From ef72cb11b311e4914711182b17287628392dc751 Mon Sep 17 00:00:00 2001
From: Maciej Szwed <maciej.szwed@intel.com>
Date: Fri, 19 Jun 2020 10:30:12 +0200
Subject: [PATCH] spdk_dd: Create file automatically if it does not exist

Signed-off-by: Maciej Szwed <maciej.szwed@intel.com>
Change-Id: I358b8b3977fc15773c6d354d72b8a30d4327fe76
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/2965
Community-CI: Mellanox Build Bot
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Aleksey Marchuk <alexeymar@mellanox.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Paul Luse <paul.e.luse@intel.com>
---
 app/spdk_dd/spdk_dd.c | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/app/spdk_dd/spdk_dd.c b/app/spdk_dd/spdk_dd.c
index 8ba08bb22..a9a8d956c 100644
--- a/app/spdk_dd/spdk_dd.c
+++ b/app/spdk_dd/spdk_dd.c
@@ -490,8 +490,14 @@ dd_output_poll(void *ctx)
 static int
 dd_open_file(struct dd_target *target, const char *fname, uint64_t skip_blocks, bool input)
 {
+	int flags = O_RDWR;
+
+	if (input == false) {
+		flags |= O_CREAT;
+	}
+
 	target->type = DD_TARGET_TYPE_FILE;
-	target->u.aio.fd = open(fname, O_RDWR);
+	target->u.aio.fd = open(fname, flags, 0600);
 	if (target->u.aio.fd < 0) {
 		SPDK_ERRLOG("Could not open file %s: %s\n", fname, strerror(errno));
 		return target->u.aio.fd;