From 13c5f90b932aa68c59271c720ced1733457946ae Mon Sep 17 00:00:00 2001
From: Lai Jiangshan <jiangshanlai@gmail.com>
Date: Thu, 31 Aug 2017 18:35:09 +0800
Subject: [PATCH] Setup /dev/shm for the initial namespace

Although hyperstart itself doesn't use posix ipc(shm),
the programs invoked by hyperstart may use it.
So it is better to setup it.

Signed-off-by: Lai Jiangshan <jiangshanlai@gmail.com>
---
 src/init.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/src/init.c b/src/init.c
index 0dc9e6b5..e380de04 100644
--- a/src/init.c
+++ b/src/init.c
@@ -1521,6 +1521,16 @@ static int hyper_setup_init_process(void)
 		return -1;
 	}
 
+	if (hyper_mkdir("/dev/shm", 0755) < 0) {
+		fprintf(stderr, "create basic directory /dev/shm failed\n");
+		return -1;
+	}
+
+	if (mount("tmpfs", "/dev/shm/", "tmpfs", MS_NOSUID| MS_NODEV, NULL) < 0) {
+		perror("mount shm failed");
+		return -1;
+	}
+
 	if (hyper_mkdir("/dev/pts", 0755) < 0) {
 		perror("create basic directory failed");
 		return -1;