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