tailscale/net/netns/netns_linux_test.go

// Copyright (c) Tailscale Inc & AUTHORS
// SPDX-License-Identifier: BSD-3-Clause

package netns

import (
	"testing"
)

func TestSocketMarkWorks(t *testing.T) {
	_ = socketMarkWorks()
	// we cannot actually assert whether the test runner has SO_MARK available
	// or not, as we don't know. We're just checking that it doesn't panic.
}
all: update copyright and license headers This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com> 2023-01-27 21:37:20 +00:00			`// Copyright (c) Tailscale Inc & AUTHORS`
			`// SPDX-License-Identifier: BSD-3-Clause`
net/netns: add a test that tailscaleBypassMark stays in sync between packages 2020-05-31 21:02:13 +00:00
			`package netns`

			`import (`
			`"testing"`
			`)`

net/netns: support !CAP_NET_ADMIN netns_linux checked whether "ip rule" could run to determine whether to use SO_MARK for network namespacing. However in Linux environments which lack CAP_NET_ADMIN, such as various container runtimes, the "ip rule" command succeeds but SO_MARK fails due to lack of permission. SO_BINDTODEVICE would work in these environments, but isn't tried. In addition to running "ip rule" check directly whether SO_MARK works or not. Among others, this allows Microsoft Azure App Service and AWS App Runner to work. Signed-off-by: Denton Gentry <dgentry@tailscale.com> 2021-06-30 04:13:00 +00:00			`func TestSocketMarkWorks(t *testing.T) {`
			`_ = socketMarkWorks()`
			`// we cannot actually assert whether the test runner has SO_MARK available`
			`// or not, as we don't know. We're just checking that it doesn't panic.`
			`}`