package unix

import _ "unsafe"

// Implemented in the runtime package (runtime/sys_darwin.go)
func syscall_syscall(fn, a1, a2, a3 uintptr) (r1, r2 uintptr, err Errno)
func syscall_syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func syscall_syscall6X(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err Errno)
func syscall_syscall9(fn, a1, a2, a3, a4, a5, a6, a7, a8, a9 uintptr) (r1, r2 uintptr, err Errno) // 32-bit only

// (Some libc functions that return 32 bits put junk in the upper 32 bits of AX.)

// golang.org/x/sys linknames syscall_syscall
// (in addition to standard package syscall).
// Do not remove or change the type signature.
//
//go:linkname syscall_syscall syscall.syscall
//go:nosplit
//go:cgo_unsafe_args
func syscall_syscall(fn, a1, a2, a3 uintptr) (r1, r2, err uintptr) {
	entersyscall()

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

//go:build openbsd && !mips64

package unix

import (
	"internal/abi"
	"syscall"
	"unsafe"
)

//go:linkname syscall_syscall6 syscall.syscall6
func syscall_syscall6(fn, a1, a2, a3, a4, a5, a6 uintptr) (r1, r2 uintptr, err syscall.Errno)

func libc_faccessat_trampoline()

//go:cgo_import_dynamic libc_faccessat faccessat "libc.so"

func libc_arc4random_buf_trampoline()

// ARC4Random calls the macOS arc4random_buf(3) function.
func ARC4Random(p []byte) {
	// macOS 11 and 12 abort if length is 0.
	if len(p) == 0 {
		return
	}
	syscall_syscall(abi.FuncPCABI0(libc_arc4random_buf_trampoline),
		uintptr(unsafe.Pointer(unsafe.SliceData(p))), uintptr(len(p)), 0)

func faccessat(dirfd int, path string, mode uint32, flags int) error {
	p, err := syscall.BytePtrFromString(path)
	if err != nil {
		return err
	}
	_, _, errno := syscall_syscall6(abi.FuncPCABI0(libc_faccessat_trampoline), uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(mode), uintptr(flags), 0, 0)
	if errno != 0 {
		return errno
	}
	return nil
}