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68 lines
1.7 KiB
Go
68 lines
1.7 KiB
Go
package kernel // import "github.com/docker/docker/pkg/parsers/kernel"
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import (
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"fmt"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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// VersionInfo holds information about the kernel.
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type VersionInfo struct {
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kvi string // Version of the kernel (e.g. 6.1.7601.17592 -> 6)
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major int // Major part of the kernel version (e.g. 6.1.7601.17592 -> 1)
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minor int // Minor part of the kernel version (e.g. 6.1.7601.17592 -> 7601)
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build int // Build number of the kernel version (e.g. 6.1.7601.17592 -> 17592)
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}
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func (k *VersionInfo) String() string {
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return fmt.Sprintf("%d.%d %d (%s)", k.major, k.minor, k.build, k.kvi)
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}
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// GetKernelVersion gets the current kernel version.
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func GetKernelVersion() (*VersionInfo, error) {
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var (
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h windows.Handle
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dwVersion uint32
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err error
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)
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KVI := &VersionInfo{"Unknown", 0, 0, 0}
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if err = windows.RegOpenKeyEx(windows.HKEY_LOCAL_MACHINE,
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windows.StringToUTF16Ptr(`SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\`),
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0,
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windows.KEY_READ,
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&h); err != nil {
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return KVI, err
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}
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defer windows.RegCloseKey(h)
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var buf [1 << 10]uint16
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var typ uint32
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n := uint32(len(buf) * 2) // api expects array of bytes, not uint16
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if err = windows.RegQueryValueEx(h,
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windows.StringToUTF16Ptr("BuildLabEx"),
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nil,
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&typ,
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(*byte)(unsafe.Pointer(&buf[0])),
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&n); err != nil {
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return KVI, err
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}
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KVI.kvi = windows.UTF16ToString(buf[:])
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// Important - docker.exe MUST be manifested for this API to return
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// the correct information.
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if dwVersion, err = windows.GetVersion(); err != nil {
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return KVI, err
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}
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KVI.major = int(dwVersion & 0xFF)
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KVI.minor = int((dwVersion & 0XFF00) >> 8)
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KVI.build = int((dwVersion & 0xFFFF0000) >> 16)
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return KVI, nil
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}
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