return internalOs.isLinux();
    }

    @Override
    public boolean isMacOsX() {
        return internalOs.isMacOsX();
    }

    @Override
    public boolean isSolaris() {
        return internalOs == OperatingSystem.SOLARIS;
    }

    @Override
    public boolean isFreeBSD() {
        return internalOs == OperatingSystem.FREE_BSD;
    }

    @Override
    public boolean equals(Object o) {

     * Is it macOS?
     */
    @Internal
    boolean isMacOsX();

    /**
     * Is it Linux?
     */
    @Internal
    boolean isLinux();

    /**
     * Is it Solaris?
     */
    @Internal
    boolean isSolaris();

    /**
     * Is it FreeBSD?
     */
    @Internal
    boolean isFreeBSD();

		}

	case objabi.Hlinux, /* elf64 executable */
		objabi.Hfreebsd,   /* freebsd */
		objabi.Hnetbsd,    /* netbsd */
		objabi.Hopenbsd,   /* openbsd */
		objabi.Hdragonfly, /* dragonfly */
		objabi.Hsolaris:   /* solaris */
		ld.Elfinit(ctxt)

		ld.HEADR = ld.ELFRESERVE
		if *ld.FlagRound == -1 {
			*ld.FlagRound = 4096
		}
		if *ld.FlagTextAddr == -1 {

        "windows" | OperatingSystem.WINDOWS
        "osx"     | OperatingSystem.MAC_OS
        "linux"   | OperatingSystem.LINUX
        "sunos"   | OperatingSystem.SOLARIS
        "solaris" | OperatingSystem.SOLARIS
        "freebsd" | OperatingSystem.FREE_BSD
    }

    def "can create arbitrary operating system"() {
        def os = new DefaultOperatingSystem("arbitrary")

        expect:

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build solaris

// Package lif provides basic functions for the manipulation of
// logical network interfaces and interface addresses on Solaris.
//
// The package supports Solaris 11 or above.
package lif

import (
	"syscall"
)

type endpoint struct {
	af int
	s  uintptr
}

        platforms.add(createPlatform(osx, x64));
        platforms.add(createPlatform(osx, aarch64));

        platforms.add(createPlatform(solaris, x64));
        platforms.add(createPlatform(solaris, x86));
        platforms.add(createPlatform(solaris, sparc));
        platforms.add(createPlatform(solaris, ultrasparc));

        return platforms;
    }

	// sockcmsg_dragonfly.go
	switch runtime.GOOS {
	case "aix":
		// There is no alignment on AIX.
		salign = 1
	case "darwin", "ios", "illumos", "solaris":
		// NOTE: It seems like 64-bit Darwin, Illumos and Solaris
		// kernels still require 32-bit aligned access to network
		// subsystem.
		if SizeofPtr == 8 {
			salign = 4
		}
	case "netbsd", "openbsd":

	if errno != 0 {
		return 0, 0
	}

	// The version string is in the form "<version>.<update>.<sru>.<build>.<reserved>"
	// on Solaris: https://blogs.oracle.com/solaris/post/whats-in-a-uname-
	// Therefore, we use the Version field on Solaris when available.
	ver := un.Version[:]
	if runtime.GOOS == "illumos" {
		// Illumos distributions use different formats without a parsable

		}
	} else { // Solaris
		if gotSock && gotAccept4 && (major < 11 || (major == 11 && minor < 4)) {
			t.Fatalf("SupportSockNonblockCloexec and SupportAccept4 are true, but kernel version is older than 11.4, Solaris version: %d.%d", major, minor)
		}
		if !gotSock && !gotAccept4 && (major > 11 || (major == 11 && minor >= 4)) {

// license that can be found in the LICENSE file.

//go:build !illumos

package net

import (
	"internal/syscall/unix"
	"runtime"
	"syscall"
	"time"
)

// Some macros of TCP Keep-Alive options on Solaris 11.4 may
// differ from those on OpenSolaris-based derivatives.
const (
	sysTCP_KEEPIDLE  = 0x1D
	sysTCP_KEEPINTVL = 0x1E
	sysTCP_KEEPCNT   = 0x1F
)

func setKeepAliveIdle(fd *netFD, d time.Duration) error {