tiny-init: Setup /dev/ptmx in init

Fixes [YOCTO #2382]

Without /dev/ptmx, ssh logins fail with:
"PTY allocation request failed on channel 0"

As the kernel support already exists in the linux-yocto-tiny kernel,
create the /dev/ptmx device in tiny-init so it works as intended.

(From meta-yocto rev: 1b71b9363aa49521896694e43a63cb6fca487da4)

Signed-off-by: Darren Hart <dvhart@linux.intel.com>
CC: Reinette Chatre <reinette.chatre@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 4 insertions, 1 deletions

diff --git a/meta-yocto/recipes-core/tiny-init/files/init b/meta-yocto/recipes-core/tiny-init/files/init
index bf2817d099..89fe39ec5a 100644
--- a/meta-yocto/recipes-core/tiny-init/files/init
+++ b/meta-yocto/recipes-core/tiny-init/files/init
@@ -3,6 +3,9 @@
 # Mount the Linux kernel virtual filesystems
 mount none -t proc /proc
 mount none -t sysfs /sys
+
+# Setup PTY infrastructure
+mknod /dev/ptmx c 5 2
 mkdir /dev/pts
 mount none -t devpts /dev/pts
 
diff --git a/meta-yocto/recipes-core/tiny-init/tiny-init.bb b/meta-yocto/recipes-core/tiny-init/tiny-init.bb
index f5892ed472..394d70fd0d 100644
--- a/meta-yocto/recipes-core/tiny-init/tiny-init.bb
+++ b/meta-yocto/recipes-core/tiny-init/tiny-init.bb
@@ -3,7 +3,7 @@ DESCRIPTION = "Basic init system for poky-tiny"
 LICENSE = "MIT"
 LIC_FILES_CHKSUM = "file://${COREBASE}/meta/COPYING.MIT;md5=3da9cfbcb788c80a0384361b4de20420"
 
-PR = "r0"
+PR = "r1"
 
 RDEPENDS_${PN} = "busybox"