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- #!/bin/sh
- # Copyright (C) 2006-2010 OpenWrt.org
- # Copyright (C) 2010 Vertical Communications
- choose_console() {
- # the shell really doesn't like having stdin/out closed
- # that's why we use /dev/pty/m0 and m1 (or equivalent) as replacement
- # for /dev/console if there's no serial console available
- if grep devfs /proc/filesystems > /dev/null; then
- M0=/dev/pty/m0
- M1=/dev/pty/m1
- M2=/dev/pty/m1
- elif [ -x /sbin/hotplug2 ]; then
- M0=/dev/ptmx
- M1=/dev/ptmx
- M2=/dev/ptmx
- elif [ -x /sbin/udevd ]; then
- M0=/dev/pty/ptmx
- M1=/dev/pty/ptmx
- M2=/dev/pty/ptmx
- fi
- dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && {
- M0=/dev/console
- M1=/dev/console
- M2=/dev/console
- }
- }
- boot_hook_add preinit_essential choose_console
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