// The accept4(3c) function was added to Oracle Solaris in the Solaris 11.4.0
// release. Thus, on releases prior to 11.4, we fall back to the combination
// of accept(3c) and fcntl(2).

package poll

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

// Wrapper around the accept system call that marks the returned file
// descriptor as nonblocking and close-on-exec.

}

func CloseOnExec(fd int) { fcntl(fd, F_SETFD, FD_CLOEXEC) }

func SetNonblock(fd int, nonblocking bool) (err error) {
	flag, err := fcntl(fd, F_GETFL, 0)
	if err != nil {
		return err
	}
	if (flag&O_NONBLOCK != 0) == nonblocking {
		return nil
	}
	if nonblocking {
		flag |= O_NONBLOCK
	} else {
		flag &^= O_NONBLOCK
	}
	_, err = fcntl(fd, F_SETFL, flag)
	return err
}

// munmap calls the munmap system call. It is implemented in assembly.
func munmap(addr unsafe.Pointer, n uintptr)

func nanotime1() int64

//go:noescape
func sigaltstack(new, old *stackt)

func fcntl(fd, cmd, arg int32) (ret int32, errno int32)

func walltime() (sec int64, nsec int32)

// Not used on Darwin, but must be defined.
func exitThread(wait *atomic.Uint32) {
	throw("exitThread")
}

//go:nosplit
func setNonblock(fd int32) {
	flags, _ := fcntl(fd, _F_GETFL, 0)
	if flags != -1 {
		fcntl(fd, _F_SETFL, flags|_O_NONBLOCK)
	}
}

func issetugid() int32 {
	return libcCall(unsafe.Pointer(abi.FuncPCABI0(issetugid_trampoline)), nil)
}
func issetugid_trampoline()

GOARCH=386 go tool cgo -cdefs defs_freebsd.go >defs_freebsd_386.h
GOARCH=arm go tool cgo -cdefs defs_freebsd.go >defs_freebsd_arm.h
*/

package runtime

/*
#include <sys/types.h>
#include <unistd.h>
#include <fcntl.h>
#include <sys/time.h>
#include <signal.h>
#include <errno.h>
#include <sys/event.h>
#include <sys/mman.h>
#include <sys/ucontext.h>
#include <sys/umtx.h>
#include <sys/_umtx.h>
#include <sys/rtprio.h>

#define __DARWIN_UNIX03 0
#include <mach/mach_time.h>
#include <sys/types.h>
#include <sys/time.h>
#include <errno.h>
#include <signal.h>
#include <sys/event.h>
#include <sys/mman.h>
#include <pthread.h>
#include <fcntl.h>
*/
import "C"

const (
	EINTR     = C.EINTR
	EFAULT    = C.EFAULT
	EAGAIN    = C.EAGAIN
	ETIMEDOUT = C.ETIMEDOUT

	PROT_NONE  = C.PROT_NONE
	PROT_READ  = C.PROT_READ
	PROT_WRITE = C.PROT_WRITE

		r0, err := unix.Fcntl(fd, syscall.F_DUPFD_CLOEXEC, 0)
		if err == nil {
			return r0, "", nil
		}
		switch err {
		case syscall.EINVAL, syscall.ENOSYS:
			// Old kernel, or js/wasm (which returns
			// ENOSYS). Fall back to the portable way from
			// now on.
			dupCloexecUnsupported.Store(true)
		default:
			return -1, "fcntl", err
		}
	}
	return dupCloseOnExecOld(fd)
}

#include <netinet/ip_mroute.h>
#include <sys/protosw.h>
#include <sys/stropts.h>
#include <sys/mman.h>
#include <sys/poll.h>
#include <sys/select.h>
#include <sys/termio.h>
#include <termios.h>
#include <fcntl.h>

#define AF_LOCAL AF_UNIX
'

includes_Darwin='
#define _DARWIN_C_SOURCE
#define KERNEL 1
#define _DARWIN_USE_64_BIT_INODE
#define __APPLE_USE_RFC_3542
#include <stdint.h>
#include <sys/attr.h>

	if len(ts) != 2 {
		return EINVAL
	}
	return utimensat(_AT_FDCWD, path, (*[2]Timespec)(unsafe.Pointer(&ts[0])), 0)
}

//sys	fcntl(fd int, cmd int, arg int) (val int, err error)

// FcntlFlock performs a fcntl syscall for the [F_GETLK], [F_SETLK] or [F_SETLKW] command.
func FcntlFlock(fd uintptr, cmd int, lk *Flock_t) error {

	osyield()
}

func kqueue() int32

//go:noescape
func kevent(kq int32, ch *keventt, nch int32, ev *keventt, nev int32, ts *timespec) int32

func pipe2(flags int32) (r, w int32, errno int32)
func fcntl(fd, cmd, arg int32) (ret int32, errno int32)

func issetugid() int32

const (
	_ESRCH     = 3
	_ETIMEDOUT = 60

	// From NetBSD's <sys/time.h>
	_CLOCK_REALTIME  = 0
	_CLOCK_VIRTUAL   = 1