From ea4b37e6790b7d3e03ee29cb050e5c76f11245ac Mon Sep 17 00:00:00 2001
From: Matt Votava <mvnetbiz@gmail.com>
Date: Wed, 1 Sep 2021 18:37:54 -0700
Subject: [PATCH] buildFhsUserenv: inherit mounts from parent namespace

---
 pkgs/build-support/build-fhs-userenv/chrootenv/chrootenv.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pkgs/build-support/build-fhs-userenv/chrootenv/chrootenv.c b/pkgs/build-support/build-fhs-userenv/chrootenv/chrootenv.c
index 27e70e3fe5c4..324c9d24ba04 100644
--- a/pkgs/build-support/build-fhs-userenv/chrootenv/chrootenv.c
+++ b/pkgs/build-support/build-fhs-userenv/chrootenv/chrootenv.c
@@ -122,7 +122,7 @@ int main(gint argc, gchar **argv) {
     }
 
     // hide all mounts we do from the parent
-    fail_if(mount(0, "/", 0, MS_PRIVATE | MS_REC, 0));
+    fail_if(mount(0, "/", 0, MS_SLAVE | MS_REC, 0));
 
     if (uid != 0) {
       spit("/proc/self/setgroups", "deny");