47 lines
1.1 KiB
Go
47 lines
1.1 KiB
Go
// Minio Cloud Storage, (C) 2021 Minio, Inc.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
//
|
|
|
|
package sha256
|
|
|
|
import (
|
|
"bytes"
|
|
"io/ioutil"
|
|
"runtime"
|
|
|
|
"github.com/klauspost/cpuid/v2"
|
|
)
|
|
|
|
func hasArmSha2() bool {
|
|
if cpuid.CPU.Has(cpuid.SHA2) {
|
|
return true
|
|
}
|
|
if runtime.GOARCH != "arm64" || runtime.GOOS != "linux" {
|
|
return false
|
|
}
|
|
|
|
// Fall back to hacky cpuinfo parsing...
|
|
const procCPUInfo = "/proc/cpuinfo"
|
|
|
|
// Feature to check for.
|
|
const sha256Feature = "sha2"
|
|
|
|
cpuInfo, err := ioutil.ReadFile(procCPUInfo)
|
|
if err != nil {
|
|
return false
|
|
}
|
|
return bytes.Contains(cpuInfo, []byte(sha256Feature))
|
|
|
|
}
|