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

//go:build darwin || dragonfly || freebsd || netbsd || openbsd

package syscall

import _ "unsafe"

// used by internal/syscall/unix
//go:linkname ioctlPtr

// golang.org/x/net linknames sysctl.
// Do not remove or change the type signature.
//

func Kill(pid int, signum syscall.Signal) (err error) { return kill(pid, int(signum), 1) }

//sys	ioctl(fd int, req uint, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

func IoctlCtlInfo(fd int, ctlInfo *CtlInfo) error {
	return ioctlPtr(fd, CTLIOCGINFO, unsafe.Pointer(ctlInfo))
}

// IfreqMTU is struct ifreq used to get or set a network device's MTU.
type IfreqMTU struct {

}

//sys	ioctl(fd int, req uint, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

func IoctlGetPtmget(fd int, req uint) (*Ptmget, error) {
	var value Ptmget
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

	return err
}

func ioctlPtr(fd int, req int, arg unsafe.Pointer) (err error) {
	_, err = ioctlPtrRet(fd, req, arg)
	return err
}

func IoctlSetTermio(fd int, req int, value *Termio) error {
	return ioctlPtr(fd, req, unsafe.Pointer(value))
}

func IoctlGetTermio(fd int, req int) (*Termio, error) {
	var value Termio
	err := ioctlPtr(fd, req, unsafe.Pointer(&value))
	return &value, err
}

		uintptr(unsafe.Pointer(&envv[0])))

childerror:
	// send error code on pipe
	write1(uintptr(pipe), uintptr(unsafe.Pointer(&err1)), unsafe.Sizeof(err1))
	for {
		exit(253)
	}
}

func ioctlPtr(fd, req uintptr, arg unsafe.Pointer) (err Errno) {
	return ioctl(fd, req, uintptr(arg))

	}
	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
	n = int(r0)
	if e1 != 0 {
		err = e1
	}
	return
}

//sys	ioctl(fd int, req uint, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

}

func Getresgid() (rgid, egid, sgid int) {
	var r, e, s _C_int
	getresgid(&r, &e, &s)
	return int(r), int(e), int(s)
}

//sys	ioctl(fd int, req uint, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

}

//sys	fcntl(fd int, cmd int, arg int) (val int, err error)
//sys	fcntlPtr(fd int, cmd int, arg unsafe.Pointer) (val int, err error) = SYS_FCNTL
//sysnb ioctl(fd int, req int, arg int) (err error)
//sysnb ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

var mapper = &mmapper{
	active: make(map[*byte][]byte),
	mmap:   mmap,
	munmap: munmap,
}

func (w WaitStatus) CoreDump() bool { return w&0x80 == 0x80 }

func (w WaitStatus) TrapCause() int { return -1 }

//sys	ioctl(fd int, req int, arg uintptr) (err error)
//sys	ioctlPtr(fd int, req int, arg unsafe.Pointer) (err error) = ioctl

// fcntl must never be called with cmd=F_DUP2FD because it doesn't work on AIX
// There is no way to create a custom fcntl and to keep //sys fcntl easily,

	r0, _, e1 := Syscall(SYS_GETFSSTAT, uintptr(_p0), bufsize, uintptr(flags))
	n = int(r0)
	if e1 != 0 {
		err = e1
	}
	return
}

//sys	ioctl(fd int, req uint, arg uintptr) (err error) = SYS_IOCTL
//sys	ioctlPtr(fd int, req uint, arg unsafe.Pointer) (err error) = SYS_IOCTL

//sys	sysctl(mib []_C_int, old *byte, oldlen *uintptr, new *byte, newlen uintptr) (err error) = SYS___SYSCTL

func Uname(uname *Utsname) error {