mirror of https://github.com/kidoman/embd
79 lines
1.3 KiB
Go
79 lines
1.3 KiB
Go
package host
|
|
|
|
import (
|
|
"fmt"
|
|
"os/exec"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
type Host int
|
|
|
|
const (
|
|
Null Host = iota
|
|
RPi
|
|
BBB
|
|
)
|
|
|
|
func execOutput(name string, arg ...string) (output string, err error) {
|
|
var out []byte
|
|
if out, err = exec.Command(name, arg...).Output(); err != nil {
|
|
return
|
|
}
|
|
output = string(out)
|
|
return
|
|
}
|
|
|
|
func nodeName() (string, error) {
|
|
return execOutput("uname", "-n")
|
|
}
|
|
|
|
func kernelVersion() (major, minor, patch int, err error) {
|
|
output, err := execOutput("uname", "-r")
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
parts := strings.Split(output, ".")
|
|
|
|
if major, err = strconv.Atoi(parts[0]); err != nil {
|
|
return
|
|
}
|
|
if minor, err = strconv.Atoi(parts[1]); err != nil {
|
|
return
|
|
}
|
|
if patch, err = strconv.Atoi(parts[2]); err != nil {
|
|
return
|
|
}
|
|
|
|
return
|
|
}
|
|
|
|
func Detect() (host Host, rev int, err error) {
|
|
major, minor, patch, err := kernelVersion()
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
if major < 3 || (major == 3 && minor < 8) {
|
|
err = fmt.Errorf("embd: linux kernel versions lower than 3.8 are not supported. you have %v.%v.%v", major, minor, patch)
|
|
return
|
|
}
|
|
|
|
node, err := nodeName()
|
|
if err != nil {
|
|
return
|
|
}
|
|
|
|
switch node {
|
|
case "raspberrypi":
|
|
host = RPi
|
|
case "beaglebone":
|
|
host = BBB
|
|
default:
|
|
err = fmt.Errorf("embd: your host %q is not supported at this moment. please request support at https://github.com/kidoman/embd/issues", node)
|
|
}
|
|
|
|
return
|
|
}
|