cubefs

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// 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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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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