Openwrt/target/linux/generic/other-files/init
Daniel Golle 7fd3c68137 initramfs: switch to tmpfs to fix ujail
Hauke wrote:
> We want to run some processes in the procd-ujail, this works when we
> use a SquashFS image and an overlay file system, but when we use an
> initramfs it does not work.
> [...]
> When we switch from initramfs to tmpfs, it is working, we added this
> code to target/linux/generic/other-files/init to make [it] work.

Move files to newly mounted tmpfs and then use switch_root to chroot
into new rootfs and free initramfs.

Suggested-by: Hauke Mehrtens <hauke@hauke-m.de>
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
2020-11-27 01:23:43 +00:00

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#!/bin/sh
# Copyright (C) 2006 OpenWrt.org
export INITRAMFS=1
# switch to tmpfs to allow run daemons in jail on initramfs boot
DIRS=$(echo *)
NEW_ROOT=/new_root
mkdir -p $NEW_ROOT
mount -t tmpfs tmpfs $NEW_ROOT
cp -pr $DIRS $NEW_ROOT
exec switch_root $NEW_ROOT /sbin/init