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d989b31c87
Now as `SYS_UNVEIL` has landed in `x/sys`, it's time to have a convenient handle for it too.
Change-Id: I61db9cc23fa9f2e10bac601959002319ea9c854b
GitHub-Last-Rev: eb9487242e
GitHub-Pull-Request: golang/sys#19
Reviewed-on: https://go-review.googlesource.com/c/142317
Reviewed-by: Tobias Klauser <tobias.klauser@gmail.com>
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
45 lines
1.1 KiB
Go
45 lines
1.1 KiB
Go
// Copyright 2018 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// +build openbsd
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package unix
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import (
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"syscall"
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"unsafe"
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)
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// Unveil implements the unveil syscall.
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// For more information see unveil(2).
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// Note that the special case of blocking further
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// unveil calls is handled by UnveilBlock.
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func Unveil(path string, flags string) error {
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pathPtr, err := syscall.BytePtrFromString(path)
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if err != nil {
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return err
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}
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flagsPtr, err := syscall.BytePtrFromString(flags)
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if err != nil {
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return err
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}
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_, _, e := syscall.Syscall(SYS_UNVEIL, uintptr(unsafe.Pointer(pathPtr)), uintptr(unsafe.Pointer(flagsPtr)), 0)
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if e != 0 {
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return e
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}
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return nil
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}
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// UnveilBlock blocks future unveil calls.
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// For more information see unveil(2).
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func UnveilBlock() error {
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// Both pointers must be nil.
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var pathUnsafe, flagsUnsafe unsafe.Pointer
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_, _, e := syscall.Syscall(SYS_UNVEIL, uintptr(pathUnsafe), uintptr(flagsUnsafe), 0)
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if e != 0 {
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return e
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}
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return nil
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}
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