You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
43 lines
1.0 KiB
Go
43 lines
1.0 KiB
Go
2 years ago
|
// 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.
|
||
|
|
|
||
|
|
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
|
||
|
|
}
|