peridot/vendor/golang.org/x/sys/unix/unveil_openbsd.go
Mustafa Gezen ad0f7a5305
Major upgrades
Upgrade to Go 1.20.5, Hydra v2 SDK, rules-go v0.44.2 (with proper resolves), protobuf v25.3 and mass upgrade of Go dependencies.
2024-03-17 08:06:08 +01:00

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
}