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ergo/vendor/golang.org/x/sys/unix/unveil_openbsd.go
dependabot[bot] 16ab0a67b5
Bump golang.org/x/crypto from 0.5.0 to 0.17.0
Bumps [golang.org/x/crypto](https://github.com/golang/crypto) from 0.5.0 to 0.17.0.
- [Commits](https://github.com/golang/crypto/compare/v0.5.0...v0.17.0)

---
updated-dependencies:
- dependency-name: golang.org/x/crypto
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>
2023-12-21 04:32:32 +00:00

52 lines
1.2 KiB
Go

// 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 "fmt"
// 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 {
if err := supportsUnveil(); err != nil {
return err
}
pathPtr, err := BytePtrFromString(path)
if err != nil {
return err
}
flagsPtr, err := BytePtrFromString(flags)
if err != nil {
return err
}
return unveil(pathPtr, flagsPtr)
}
// UnveilBlock blocks future unveil calls.
// For more information see unveil(2).
func UnveilBlock() error {
if err := supportsUnveil(); err != nil {
return err
}
return unveil(nil, nil)
}
// supportsUnveil checks for availability of the unveil(2) system call based
// on the running OpenBSD version.
func supportsUnveil() error {
maj, min, err := majmin()
if err != nil {
return err
}
// unveil is not available before 6.4
if maj < 6 || (maj == 6 && min <= 3) {
return fmt.Errorf("cannot call Unveil on OpenBSD %d.%d", maj, min)
}
return nil
}