func NativeArchitecture()

in providers/linux/arch_linux.go [53:86]

• 22 lines of code
• 9 McCabe index (conditional complexity)

func NativeArchitecture() (string, error) {
	// /proc/sys/kernel/arch was introduced in Kernel 6.1
	// https://www.kernel.org/doc/html/v6.1/admin-guide/sysctl/kernel.html#arch
	// It's the same as uname -m, except that for a process running in emulation
	// machine returned from syscall reflects the emulated machine, whilst /proc
	// filesystem is read as file so its value is not emulated
	data, err := os.ReadFile(procSysKernelArch)
	if err != nil {
		if os.IsNotExist(err) {
			// fallback to checking version string for older kernels
			version, err := os.ReadFile(procVersion)
			if err != nil && !os.IsNotExist(err) {
				return "", fmt.Errorf("failed to read kernel version: %w", err)
			}

			versionStr := string(version)
			if strings.Contains(versionStr, archAmd64) || strings.Contains(versionStr, arch8664) {
				return archAmd64, nil
			} else if strings.Contains(versionStr, archArm64) || strings.Contains(versionStr, archAarch64) {
				// for parity with Architecture() and /proc/sys/kernel/arch
				// as aarch64 and arm64 are used interchangeably
				return archAarch64, nil
			}
			return "", nil
		}

		return "", fmt.Errorf("failed to read kernel arch: %w", err)
	}

	nativeArch := string(data)
	nativeArch = strings.TrimRight(nativeArch, "\n")

	return nativeArch, nil
}