package os

import (
	"internal/filepathlite"
	"syscall"
	"time"
)

func fillFileStatFromSys(fs *fileStat, name string) {
	fs.name = filepathlite.Base(name)
	fs.size = fs.sys.Size
	fs.modTime = time.Unix(fs.sys.Mtim.Unix())
	fs.mode = FileMode(fs.sys.Mode & 0777)
	switch fs.sys.Mode & syscall.S_IFMT {
	case syscall.S_IFBLK:
		fs.mode |= ModeDevice
	case syscall.S_IFCHR:
		fs.mode |= ModeDevice | ModeCharDevice

// Copyright 2018 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build unix

package os

import (
	"internal/syscall/unix"
	"io"
	"syscall"
)

func removeAll(path string) error {
	if path == "" {
		// fail silently to retain compatibility with previous behavior
		// of RemoveAll. See issue 28830.
		return nil
	}

    def fs = NativeServicesTestFixture.instance.get(FileSystem)

    def "unix permissions cannot be read on non existing file"() {
        def file = tmpDir.file("someFile")

        when:
        fs.getUnixMode(file)

        then:
        FileException e = thrown()
        e.message == "Could not get file mode for '$file'."
    }

    def "unix permissions cannot be set on non existing file"() {

}

func (n *NetnsWrapper) Fd() uintptr {
	return n.innerNetns.Fd()
}

func inodeForFd(n NetnsFd) (uint64, error) {
	stats := &unix.Stat_t{}
	err := unix.Fstat(int(n.Fd()), stats)
	return stats.Ino, err
}

func OpenNetns(nspath string) (NetnsCloser, error) {
	n, err := netns.GetNS(nspath)
	if err != nil {
		return nil, err
	}
	i, err := inodeForFd(n)
	if err != nil {
		n.Close()
		return nil, err
	}

//  v5.3: pidfd_open syscall, clone3 syscall;
//  v5.4: P_PIDFD idtype support for waitid syscall;
//  v5.6: pidfd_getfd syscall.

package os

import (
	"errors"
	"internal/syscall/unix"
	"sync"
	"syscall"
	"unsafe"
)

func ensurePidfd(sysAttr *syscall.SysProcAttr) *syscall.SysProcAttr {
	if !pidfdWorks() {
		return sysAttr
	}

	var pidfd int

	if sysAttr == nil {

	if !testableNetwork("unixgram") {
		t.Skip("skipping unix-to-tcp tests")
	}
	t.Run("unix-to-tcp", func(t *testing.T) { testSplice(t, "unix", "tcp") })
	t.Run("tcp-to-unix", func(t *testing.T) { testSplice(t, "tcp", "unix") })
	t.Run("tcp-to-file", func(t *testing.T) { testSpliceToFile(t, "tcp", "file") })
	t.Run("unix-to-file", func(t *testing.T) { testSpliceToFile(t, "unix", "file") })
	t.Run("no-unixpacket", testSpliceNoUnixpacket)

	ModeNamedPipe  = fs.ModeNamedPipe  // p: named pipe (FIFO)
	ModeSocket     = fs.ModeSocket     // S: Unix domain socket
	ModeSetuid     = fs.ModeSetuid     // u: setuid
	ModeSetgid     = fs.ModeSetgid     // g: setgid
	ModeCharDevice = fs.ModeCharDevice // c: Unix character device, when ModeDevice is set
	ModeSticky     = fs.ModeSticky     // t: sticky

		return ErrEmptyName
	}
	if len(name) > MaxLength {
		return ErrNameExceedsMaxLength
	}

	req := r.handler.newRequest(cmdNew, unix.NLM_F_REQUEST|unix.NLM_F_CREATE|unix.NLM_F_ACK)
	req.AddData(nl.NewRtAttr(attrName, nl.ZeroTerminated(name)))
	_, err := req.Execute(unix.NETLINK_NETFILTER, 0)
	if err != nil {
		return handleError(err)
	}
	return nil
}

// Get is part of the interface.

package iptables

import (
	"errors"
	"fmt"
	"net"

	"github.com/vishvananda/netlink"
	"golang.org/x/sys/unix"
)

func AddInpodMarkIPRule(cfg *Config) error {
	err := forEachInpodMarkIPRule(cfg, netlink.RuleAdd)
	if errors.Is(err, unix.EEXIST) {
		log.Debugf("Ignoring exists error adding inpod mark ip rule: %v", err)
		return nil
	}
	return err
}

    public static final Solaris SOLARIS = new Solaris();
    public static final Linux LINUX = new Linux();
    public static final FreeBSD FREE_BSD = new FreeBSD();
    public static final Unix UNIX = new Unix();
    private static OperatingSystem currentOs;
    private final String toStringValue;
    private final String osName;
    private final String osVersion;

    OperatingSystem() {