// Copyright 2009 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 || (js && wasm) || wasip1 || windows

package os

import (
	"internal/itoa"
	"internal/syscall/execenv"
	"runtime"
	"syscall"
)

// The only signal values guaranteed to be present in the os package on all

	}
}

func TestReadOnlyWriteFile(t *testing.T) {
	if Getuid() == 0 {
		t.Skipf("Root can write to read-only files anyway, so skip the read-only test.")
	}
	if runtime.GOOS == "wasip1" {
		t.Skip("no support for file permissions on " + runtime.GOOS)
	}
	t.Parallel()

	// We don't want to use CreateTemp directly, since that opens a file for us as 0600.
	tempDir, err := MkdirTemp("", t.Name())

// Copyright 2010 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 || js || wasip1 || windows

package net

import (
	"context"
	"syscall"
)

func sockaddrToIP(sa syscall.Sockaddr) Addr {
	switch sa := sa.(type) {
	case *syscall.SockaddrInet4:
		return &IPAddr{IP: sa.Addr[0:]}
	case *syscall.SockaddrInet6:

// Copyright 2009 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 || (js && wasm) || wasip1

package os

import (
	"errors"
	"runtime"
	"syscall"
	"time"
)

const (
	// Special values for Process.Pid.
	pidUnset    = 0
	pidReleased = -1
)

func (p *Process) wait() (ps *ProcessState, err error) {

// Copyright 2013 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 || windows || wasip1

package poll

import (
	"errors"
	"sync"
	"syscall"
	"time"
	_ "unsafe" // for go:linkname
)

// runtimeNano returns the current value of the runtime clock in nanoseconds.
//
//go:linkname runtimeNano runtime.nanotime

// Copyright 2023 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 wasip1

package runtime

import "unsafe"

// WASI network poller.
//
// WASI preview 1 includes a poll_oneoff host function that behaves similarly
// to poll(2) on Linux. Like poll(2), poll_oneoff is level triggered. It

	runtime.GOOS == "android" || // #60967
	runtime.GOOS == "illumos" || // #65544
	// These platforms fundamentally can't be supported:
	runtime.GOOS == "js" || // #60971
	runtime.GOOS == "wasip1" || // #60971

		SysFile:       fd.SysFile.ref(),
		IsStream:      fd.IsStream,
		ZeroReadIsEOF: fd.ZeroReadIsEOF,
		isBlocking:    fd.isBlocking,
		isFile:        fd.isFile,
	}
}

// dupCloseOnExecOld always errors on wasip1 because there is no mechanism to
// duplicate file descriptors.
func dupCloseOnExecOld(fd int) (int, string, error) {
	return -1, "dup", syscall.ENOSYS
}

// Fchdir wraps syscall.Fchdir.
func (fd *FD) Fchdir() error {

// Copyright 2009 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 || js || wasip1 || windows

package net

import (
	"context"
	"errors"
	"os"
	"syscall"
)

func unixSocket(ctx context.Context, net string, laddr, raddr sockaddr, mode string, ctxCtrlFn func(context.Context, string, string, syscall.RawConn) error) (*netFD, error) {

// Copyright 2009 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 || js || wasip1 || windows

package net

import (
	"context"
	"io"
	"os"
	"syscall"
)

func sockaddrToTCP(sa syscall.Sockaddr) Addr {
	switch sa := sa.(type) {
	case *syscall.SockaddrInet4:
		return &TCPAddr{IP: sa.Addr[0:], Port: sa.Port}