Fix posseble unmount host sys, proc and dev folders.

1 files changed, 12 insertions, 0 deletions

diff --git a/enter-chroot.sh b/enter-chroot.sh
index 6b3927376368..9edbbffee7f6 100644
--- a/enter-chroot.sh
+++ b/enter-chroot.sh
@@ -35,6 +35,18 @@ monitor_chroot_exit() {
         fi
     done < $MOUNT_POINT/exit.fifo
 
+    if grep -qs "$MOUNT_POINT/sys" /proc/mounts
+    then umount -l $MOUNT_POINT/sys
+    fi
+
+    if grep -qs "$MOUNT_POINT/dev" /proc/mounts
+    then umount -l $MOUNT_POINT/dev
+    fi
+
+    if grep -qs "$MOUNT_POINT/proc" /proc/mounts
+    then umount -l $MOUNT_POINT/proc
+    fi
+
     # Send a SIGTERM signal to the parent process (which is running the chroot command)
     kill -s TERM $$
 }