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|
// +build darwin
// Package kernel provides helper function to get, parse and compare kernel
// versions for different platforms.
package kernel
import (
"fmt"
"os/exec"
"strings"
"github.com/mattn/go-shellwords"
)
// GetKernelVersion gets the current kernel version.
func GetKernelVersion() (*VersionInfo, error) {
release, err := getRelease()
if err != nil {
return nil, err
}
return ParseRelease(release)
}
// getRelease uses `system_profiler SPSoftwareDataType` to get OSX kernel version
func getRelease() (string, error) {
cmd := exec.Command("system_profiler", "SPSoftwareDataType")
osName, err := cmd.Output()
if err != nil {
return "", err
}
var release string
data := strings.Split(string(osName), "\n")
for _, line := range data {
if strings.Contains(line, "Kernel Version") {
// It has the format like ' Kernel Version: Darwin 14.5.0'
content := strings.SplitN(line, ":", 2)
if len(content) != 2 {
return "", fmt.Errorf("Kernel Version is invalid")
}
prettyNames, err := shellwords.Parse(content[1])
if err != nil {
return "", fmt.Errorf("Kernel Version is invalid: %s", err.Error())
}
if len(prettyNames) != 2 {
return "", fmt.Errorf("Kernel Version needs to be 'Darwin x.x.x' ")
}
release = prettyNames[1]
}
}
return release, nil
}
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