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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.
- // +build openbsd
- package unix
- import (
- "syscall"
- "unsafe"
- )
- // Unveil implements the unveil syscall.
- // For more information see unveil(2).
- // Note that the special case of blocking further
- // unveil calls is handled by UnveilBlock.
- func Unveil(path string, flags string) error {
- pathPtr, err := syscall.BytePtrFromString(path)
- if err != nil {
- return err
- }
- flagsPtr, err := syscall.BytePtrFromString(flags)
- if err != nil {
- return err
- }
- _, _, e := syscall.Syscall(SYS_UNVEIL, uintptr(unsafe.Pointer(pathPtr)), uintptr(unsafe.Pointer(flagsPtr)), 0)
- if e != 0 {
- return e
- }
- return nil
- }
- // UnveilBlock blocks future unveil calls.
- // For more information see unveil(2).
- func UnveilBlock() error {
- // Both pointers must be nil.
- var pathUnsafe, flagsUnsafe unsafe.Pointer
- _, _, e := syscall.Syscall(SYS_UNVEIL, uintptr(pathUnsafe), uintptr(flagsUnsafe), 0)
- if e != 0 {
- return e
- }
- return nil
- }
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