tests: Make /etc/alternatives work in VM
In recent Debian versions, ebtables is an alias managed by the alternatives(8) mechanism. This means /usr/sbin/ebtables is a symlink to /etc/alternatives/ebtables, which in turn links to the real binary. As we mount a tmpfs over /etc, we cannot access this. Fix this by bind-mounting the real /etc to /tmp/etc and adding a symlink from /etc/alternatives to this. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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@ -1,10 +1,13 @@
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#!/bin/sh
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#!/bin/sh
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# keep old /etc
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mount tmpfs -t tmpfs /tmp
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mkdir /tmp/etc
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mount --bind /etc /tmp/etc
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# mount all kinds of things
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# mount all kinds of things
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mount tmpfs -t tmpfs /etc
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mount tmpfs -t tmpfs /etc
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# we need our own /dev/rfkill, and don't want device access
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# we need our own /dev/rfkill, and don't want device access
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mount tmpfs -t tmpfs /dev
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mount tmpfs -t tmpfs /dev
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mount tmpfs -t tmpfs /tmp
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# some sockets go into /var/run, and / is read-only
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# some sockets go into /var/run, and / is read-only
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mount tmpfs -t tmpfs /var/run
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mount tmpfs -t tmpfs /var/run
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mount proc -t proc /proc
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mount proc -t proc /proc
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@ -79,6 +82,9 @@ udp 17 UDP
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ipv6-icmp 58 IPv6-ICMP
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ipv6-icmp 58 IPv6-ICMP
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EOF
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EOF
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# we may need /etc/alternatives, at least on Debian-based systems
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ln -s /tmp/etc/alternatives /etc/
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# local network is needed for some tests
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# local network is needed for some tests
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ip link set lo up
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ip link set lo up
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