66 lines
1.3 KiB
Go
66 lines
1.3 KiB
Go
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package kernel
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import (
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"fmt"
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"syscall"
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"unsafe"
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)
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type KernelVersionInfo struct {
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kvi string
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major int
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minor int
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build int
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}
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func (k *KernelVersionInfo) 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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func GetKernelVersion() (*KernelVersionInfo, error) {
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var (
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h syscall.Handle
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dwVersion uint32
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err error
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)
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KVI := &KernelVersionInfo{"Unknown", 0, 0, 0}
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if err = syscall.RegOpenKeyEx(syscall.HKEY_LOCAL_MACHINE,
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syscall.StringToUTF16Ptr(`SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\`),
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0,
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syscall.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 syscall.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 = syscall.RegQueryValueEx(h,
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syscall.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 = syscall.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 = syscall.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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