mirror of
https://github.com/netbirdio/gvisor.git
synced 2026-05-22 17:12:49 -07:00
Andrei Vagin
c3fe152a48
It is much easier to create complex configurations from bash scripts with help of the iproute2 tools. PiperOrigin-RevId: 646286415
81 lines
2.1 KiB
Bash
81 lines
2.1 KiB
Bash
#!/bin/bash
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# Copyright 2024 The gVisor Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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set -xeo pipefail
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fail() {
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echo "FAIL: $*"
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exit 1
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}
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# Don't report any test cases.
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echo "$@" | grep list_tests && exit 1
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if [[ -z "$TEST_ON_GVISOR" ]]; then
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if [[ ! -d /var/run ]]; then
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echo "SKIP: /var/run doesn't exist but it is required for the ip tool."
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exit 0
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fi
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mount -t tmpfs test /var/run
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else
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mkdir -p /var/run
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mount -t tmpfs test /var/run
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fi
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# check_connectivity checks that a TCP connection can be established between two
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# specified namespaces.
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# Arguments:
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# * network namespace where a server will be started
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# * IP address in the server network namespace.
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# * port for a test TCP connection
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# * network namespace where a client will be started
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# * test message that will be send from server to client
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check_connectivity() {
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local srv_netns="$1"
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local srv_ip="$2"
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local port="$3"
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local clt_netns="$4"
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local test_msg="$5"
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# Create a sync pipe that will be closed when TCP_SRV creates a listen socket.
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exec {pipe}<> <(:)
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exec {pipe_r}</proc/self/fd/$pipe
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exec {pipe_w}>/proc/self/fd/$pipe
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exec {pipe}>&-
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echo "$test_msg" | ip netns exec "$srv_netns" "$TCP_SRV" "--port=$port" "--sync-fd=$pipe_w" 1>&2 &
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pid=$!
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exec {pipe_w}>&-
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cat <&$pipe_r
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exec {pipe_r}>&-
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# The server has been started.
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out=$(ip netns exec "$clt_netns" nc -nvd "$srv_ip" "$port")
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if [[ "$out" != "$test_msg" ]]; then
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fail "unexpected output '$out' (expected '$test_msg'"
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fi
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wait "$pid"
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}
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wait_for() {
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for _ in $(seq 50); do
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if eval "$@"; then
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return 0
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fi
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sleep 0.1
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done
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return 1
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}
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