1// Copyright 2018 The Go Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style
3// license that can be found in the LICENSE file.
4
5//go:build dragonfly || freebsd || linux || netbsd || (openbsd && mips64)
6
7package unix
8
9import (
10	"syscall"
11	"unsafe"
12)
13
14func Unlinkat(dirfd int, path string, flags int) error {
15	p, err := syscall.BytePtrFromString(path)
16	if err != nil {
17		return err
18	}
19
20	_, _, errno := syscall.Syscall(unlinkatTrap, uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(flags))
21	if errno != 0 {
22		return errno
23	}
24
25	return nil
26}
27
28func Openat(dirfd int, path string, flags int, perm uint32) (int, error) {
29	p, err := syscall.BytePtrFromString(path)
30	if err != nil {
31		return 0, err
32	}
33
34	fd, _, errno := syscall.Syscall6(openatTrap, uintptr(dirfd), uintptr(unsafe.Pointer(p)), uintptr(flags), uintptr(perm), 0, 0)
35	if errno != 0 {
36		return 0, errno
37	}
38
39	return int(fd), nil
40}
41