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16587746ed
Linux kernel versions 6.6.102-104 and 6.12.42-45 have a regression in /proc/net/tcp that causes seek operations to fail with "illegal seek". This breaks portlist tests on these kernels. Add kernel version detection for Linux systems and a SkipOnKernelVersions helper to tstest. Use it to skip affected portlist tests on the broken kernel versions. Thanks to philiptaron for the list of kernels with the issue and fix. Updates #16966 Signed-off-by: Andrew Dunham <andrew@tailscale.com>
51 lines
1.0 KiB
Go
51 lines
1.0 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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//go:build linux
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package tstest
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import (
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"strconv"
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"strings"
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"golang.org/x/sys/unix"
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)
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// KernelVersion returns the major, minor, and patch version of the Linux kernel.
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// It returns (0, 0, 0) if the version cannot be determined.
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func KernelVersion() (major, minor, patch int) {
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var uname unix.Utsname
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if err := unix.Uname(&uname); err != nil {
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return 0, 0, 0
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}
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release := unix.ByteSliceToString(uname.Release[:])
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// Parse version string (e.g., "5.15.0-...")
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parts := strings.Split(release, ".")
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if len(parts) < 3 {
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return 0, 0, 0
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}
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major, err := strconv.Atoi(parts[0])
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if err != nil {
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return 0, 0, 0
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}
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minor, err = strconv.Atoi(parts[1])
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if err != nil {
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return 0, 0, 0
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}
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// Patch version may have additional info after a hyphen (e.g., "0-76-generic")
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// Extract just the numeric part before any hyphen
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patchStr, _, _ := strings.Cut(parts[2], "-")
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patch, err = strconv.Atoi(patchStr)
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if err != nil {
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return 0, 0, 0
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}
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return major, minor, patch
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}
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