mirror of
https://github.com/kernelkit/infix.git
synced 2026-07-22 09:13:01 +02:00
Mattias Walström
dd5c4919d6
If running outside container find the netns inside the container, then enter that netns. lazzer@tollan ~/src/github.com/kernelkit/infix3 (add-wireguard)$ sudo ./test/nsenter d2b (netns:d2b) #
45 lines
1.4 KiB
Bash
Executable File
45 lines
1.4 KiB
Bash
Executable File
#!/bin/sh
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set -e
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testdir=$(dirname "$(readlink -f "$0")")
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. "$testdir/.env"
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lower=$1
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shift
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[ $# -gt 0 ] || set sh
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# Detect if we're running inside the infamy container or on the host
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# Inside the container, we can directly access the interfaces
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# On the host, we need to use docker/podman exec
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if ip link show "$lower" >/dev/null 2>&1; then
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# We can see the lower interface directly, so we're in the right namespace
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lookup_ifname() {
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ip -j link show | jq -r ".[] | select(.ifindex == $1) | .ifname"
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}
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else
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# We're on the host, need to query the infamy container
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infamy=$(infamy 2>/dev/null) || {
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echo "ERROR: Cannot see interface '$lower' and no infamy container found" >&2
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echo " Run this script from inside the infamy container or from the host with docker/podman available" >&2
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exit 1
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}
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lookup_ifname() {
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$(runner) exec $infamy ip -j link show | jq -r ".[] | select(.ifindex == $1) | .ifname"
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}
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fi
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for pid in $(pgrep -fx "sleep infinity"); do
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ifidxs=$(nsenter -t $pid -U -n ip -j link show | \
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jq '.[] | select(has("link_netnsid")) | .link_index')
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for ifidx in $ifidxs; do
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ifname=$(lookup_ifname $ifidx)
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if [ "$ifname" = "$lower" ]; then
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exec nsenter -t $pid -U -n env PS1="(netns:$ifname) # " "$@"
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fi
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done
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done
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echo Found no namespace with interface stacked on $lower >&2
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exit 1
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