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88cc0ad9f7
The util/linuxfw/iptables.go had a bunch of code that wasn't yet used (in prep for future work) but because of its imports, ended up initializing code deep within gvisor that panicked on init on arm64 systems not using 4KB pages. This deletes the unused code to delete the imports and remove the panic. We can then cherry-pick this back to the branch and restore it later in a different way. A new test makes sure we don't regress in the future by depending on the panicking package in question. Fixes #8658 Signed-off-by: Brad Fitzpatrick <bradfitz@tailscale.com>
30 lines
806 B
Go
30 lines
806 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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// TODO(#8502): add support for more architectures
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//go:build linux && (arm64 || amd64)
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package linuxfw
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import (
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"tailscale.com/types/logger"
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)
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// DebugNetfilter prints debug information about iptables rules to the
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// provided log function.
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func DebugIptables(logf logger.Logf) error {
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// unused.
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return nil
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}
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// DetectIptables returns the number of iptables rules that are present in the
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// system, ignoring the default "ACCEPT" rule present in the standard iptables
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// chains.
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//
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// It only returns an error when the kernel returns an error (i.e. when a
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// syscall fails); when there are no iptables rules, it is valid for this
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// function to return 0, nil.
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func DetectIptables() (int, error) {
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panic("unused")
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}
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