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//go:build darwin
// +build darwin
// Package kernel provides helper function to get, parse and compare kernel
// versions for different platforms.
package kernel // import "github.com/docker/docker/pkg/parsers/kernel"
import (
"fmt"
"os/exec"
"strings"
)
// GetKernelVersion gets the current kernel version.
func GetKernelVersion() (*VersionInfo, error) {
osName, err := getSPSoftwareDataType()
if err != nil {
return nil, err
}
release, err := getRelease(osName)
if err != nil {
return nil, err
}
return ParseRelease(release)
}
// getRelease uses `system_profiler SPSoftwareDataType` to get OSX kernel version
func getRelease(osName string) (string, error) {
for _, line := range strings.Split(osName, "\n") {
if !strings.Contains(line, "Kernel Version") {
continue
}
// It has the format like ' Kernel Version: Darwin 14.5.0'
_, ver, ok := strings.Cut(line, ":")
if !ok {
return "", fmt.Errorf("kernel Version is invalid")
}
_, release, ok := strings.Cut(strings.TrimSpace(ver), " ")
if !ok {
return "", fmt.Errorf("kernel version needs to be 'Darwin x.x.x'")
}
return release, nil
}
return "", nil
}
func getSPSoftwareDataType() (string, error) {
cmd := exec.Command("system_profiler", "SPSoftwareDataType")
osName, err := cmd.Output()
if err != nil {
return "", err
}
return string(osName), nil
}
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