ccc52c8183
This patch has same purpose than 49964858f4:
On some machines, the network interface is slow to appear. For example,
on the Raspberry Pi, the network interface eth0 is an ethernet-over-USB,
and our standard boot process is too fast, so our network startup script
is called before the USB bus is compeltely enumerated, thus it can't
configure eth0.
Closes #8116.
However, wait-delay hook is enabled only if wait-delay property appears
in /etc/network/interfaces. This patch enable it automaticaly when
interface is configured through DHCP at bootup. But, if user choose
to write /etc/network/interface himself, he have to explicitly
set wait-delay.
Signed-off-by: Jérôme Pouiller <jezz@sysmic.org>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
22 lines
576 B
Bash
Executable File
22 lines
576 B
Bash
Executable File
#!/bin/sh
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# In case we have a slow-to-appear interface (e.g. eth-over-USB),
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# and we need to configure it, wait until it appears, but not too
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# long either. IF_WAIT_DELAY is in seconds.
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if [ "${IF_WAIT_DELAY}" -a ! -e "/sys/class/net/${IFACE}" ]; then
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printf "Waiting for interface %s to appear" "${IFACE}"
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while [ ${IF_WAIT_DELAY} -gt 0 ]; do
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if [ -e "/sys/class/net/${IFACE}" ]; then
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printf "\n"
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exit 0
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fi
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sleep 1
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printf "."
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: $((IF_WAIT_DELAY -= 1))
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done
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printf " timeout!\n"
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exit 1
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fi
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