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// Copyright 2018 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 linux || openbsd || netbsd || dragonfly
package unix
import (
"syscall"
)
//extern unlinkat
func unlinkat(int32, *byte, int32) int32
//extern __go_openat
func openat(int32, *byte, int32, syscall.Mode_t) int32
func Unlinkat(dirfd int, path string, flags int) error {
var p *byte
p, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
syscall.Entersyscall()
r := unlinkat(int32(dirfd), p, int32(flags))
var errno syscall.Errno
if r < 0 {
errno = syscall.GetErrno()
}
syscall.Exitsyscall()
if r < 0 {
return errno
}
return nil
}
func Openat(dirfd int, path string, flags int, perm uint32) (int, error) {
var p *byte
p, err := syscall.BytePtrFromString(path)
if err != nil {
return 0, err
}
syscall.Entersyscall()
fd := openat(int32(dirfd), p, int32(flags), syscall.Mode_t(perm))
var errno syscall.Errno
if fd < 0 {
errno = syscall.GetErrno()
}
syscall.Exitsyscall()
if fd < 0 {
return 0, errno
}
return int(fd), nil
}
func Fstatat(dirfd int, path string, stat *syscall.Stat_t, flags int) error {
var p *byte
p, err := syscall.BytePtrFromString(path)
if err != nil {
return err
}
syscall.Entersyscall()
r := fstatat(int32(dirfd), p, stat, int32(flags))
var errno syscall.Errno
if r < 0 {
errno = syscall.GetErrno()
}
syscall.Exitsyscall()
if r < 0 {
return errno
}
return nil
}
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