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moby--moby/pkg/platform/architecture_linux.go

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// Package platform provides helper function to get the runtime architecture
// for different platforms.
package platform
import (
"bytes"
"golang.org/x/sys/unix"
)
// runtimeArchitecture gets the name of the current architecture (x86, x86_64, …)
func runtimeArchitecture() (string, error) {
utsname := &unix.Utsname{}
if err := unix.Uname(utsname); err != nil {
return "", err
}
return string(utsname.Machine[:bytes.IndexByte(utsname.Machine[:], 0)]), nil
}