From 269a0ca00717d2f43f03be5f7b034d93fb33f473 Mon Sep 17 00:00:00 2001
From: Christine Caulfield <ccaulfie@redhat.com>
Date: Mon, 8 Apr 2019 13:31:38 +0100
Subject: [PATCH] ipc: use O_EXCL when opening IPC files

---
 lib/ipc_us.c     | 2 +-
 lib/ringbuffer.c | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

--- libqb.git.orig/lib/ipc_us.c
+++ libqb.git/lib/ipc_us.c
@@ -881,7 +881,7 @@
 
 	fd_hdr = qb_sys_mmap_file_open(path, r->request,
 				       sizeof(struct ipc_us_control),
-				       O_CREAT | O_TRUNC | O_RDWR);
+				       O_CREAT | O_TRUNC | O_RDWR | O_EXCL);
 	if (fd_hdr < 0) {
 		res = -errno;
 		qb_util_perror(LOG_ERR, "couldn't create file for mmap");
--- libqb.git.orig/lib/ringbuffer.c
+++ libqb.git/lib/ringbuffer.c
@@ -116,7 +116,7 @@
 	    sizeof(struct qb_ringbuffer_shared_s) + shared_user_data_size;
 
 	if (flags & QB_RB_FLAG_CREATE) {
-		file_flags |= O_CREAT | O_TRUNC;
+		file_flags |= O_CREAT | O_TRUNC | O_EXCL;
 	}
 
 	rb = calloc(1, sizeof(struct qb_ringbuffer_s));