David K. Bainbridge | 215e024 | 2017-09-05 23:18:24 -0700 | [diff] [blame] | 1 | // Copyright 2016 The Go Authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style |
| 3 | // license that can be found in the LICENSE file. |
| 4 | |
| 5 | // +build openbsd |
| 6 | // +build 386 amd64 arm |
| 7 | |
| 8 | package unix |
| 9 | |
| 10 | import ( |
| 11 | "syscall" |
| 12 | "unsafe" |
| 13 | ) |
| 14 | |
| 15 | const ( |
| 16 | SYS_PLEDGE = 108 |
| 17 | ) |
| 18 | |
| 19 | // Pledge implements the pledge syscall. For more information see pledge(2). |
| 20 | func Pledge(promises string, paths []string) error { |
| 21 | promisesPtr, err := syscall.BytePtrFromString(promises) |
| 22 | if err != nil { |
| 23 | return err |
| 24 | } |
| 25 | promisesUnsafe, pathsUnsafe := unsafe.Pointer(promisesPtr), unsafe.Pointer(nil) |
| 26 | if paths != nil { |
| 27 | var pathsPtr []*byte |
| 28 | if pathsPtr, err = syscall.SlicePtrFromStrings(paths); err != nil { |
| 29 | return err |
| 30 | } |
| 31 | pathsUnsafe = unsafe.Pointer(&pathsPtr[0]) |
| 32 | } |
| 33 | _, _, e := syscall.Syscall(SYS_PLEDGE, uintptr(promisesUnsafe), uintptr(pathsUnsafe), 0) |
| 34 | if e != 0 { |
| 35 | return e |
| 36 | } |
| 37 | return nil |
| 38 | } |