unveil.go (view raw)
1//
2// Copyright (c) 2019 Ted Unangst <tedu@tedunangst.com>
3//
4// Permission to use, copy, modify, and distribute this software for any
5// purpose with or without fee is hereby granted, provided that the above
6// copyright notice and this permission notice appear in all copies.
7//
8// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15
16package main
17
18import (
19 "humungus.tedunangst.com/r/pledge"
20)
21
22func init() {
23 preservehooks = append(preservehooks, func() {
24 err := pledge.Unveil("/etc/ssl", "r")
25 if err != nil {
26 elog.Fatalf("unveil(%s, %s) failure (%d)", "/etc/ssl", "r", err)
27 }
28 if viewDir != dataDir {
29 err = pledge.Unveil(viewDir, "r")
30 if err != nil {
31 elog.Fatalf("unveil(%s, %s) failure (%d)", viewDir, "r", err)
32 }
33 }
34 err = pledge.Unveil(dataDir, "rwc")
35 if err != nil {
36 elog.Fatalf("unveil(%s, %s) failure (%d)", dataDir, "rwc", err)
37 }
38 pledge.UnveilEnd()
39 promises := "stdio rpath wpath cpath flock dns inet unix"
40 err = pledge.Pledge(promises)
41 if err != nil {
42 elog.Fatalf("pledge(%s) failure (%d)", promises, err)
43 }
44 })
45 backendhooks = append(backendhooks, func() {
46 pledge.UnveilEnd()
47 promises := "stdio unix"
48 err := pledge.Pledge(promises)
49 if err != nil {
50 elog.Fatalf("pledge(%s) failure (%d)", promises, err)
51 }
52 })
53}