| 1 | #!/bin/sh |
| 2 | # Copyright (C) 2006-2010 OpenWrt.org |
| 3 | # Copyright (C) 2010 Vertical Communications |
| 4 | |
| 5 | choose_console() { |
| 6 | # the shell really doesn't like having stdin/out closed |
| 7 | # that's why we use /dev/pty/m0 and m1 (or equivalent) as replacement |
| 8 | # for /dev/console if there's no serial console available |
| 9 | |
| 10 | if grep -q devfs /proc/filesystems; then |
| 11 | M0=/dev/pty/m0 |
| 12 | M1=/dev/pty/m1 |
| 13 | M2=/dev/pty/m1 |
| 14 | elif [ -x /sbin/hotplug2 ]; then |
| 15 | M0=/dev/ptmx |
| 16 | M1=/dev/ptmx |
| 17 | M2=/dev/ptmx |
| 18 | elif [ -x /sbin/udevd ]; then |
| 19 | M0=/dev/pty/ptmx |
| 20 | M1=/dev/pty/ptmx |
| 21 | M2=/dev/pty/ptmx |
| 22 | fi |
| 23 | dd if=/dev/console of=/dev/null bs=1 count=0 >/dev/null 2>/dev/null && { |
| 24 | M0=/dev/console |
| 25 | M1=/dev/console |
| 26 | M2=/dev/console |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | boot_hook_add preinit_essential choose_console |
| 31 | |
| 32 | |
