| package hcsshim |
| |
| import ( |
| "fmt" |
| "syscall" |
| "unsafe" |
| |
| "github.com/Sirupsen/logrus" |
| ) |
| |
| // NameToGuid converts the given string into a GUID using the algorithm in the |
| // Host Compute Service, ensuring GUIDs generated with the same string are common |
| // across all clients. |
| func NameToGuid(name string) (id GUID, err error) { |
| title := "hcsshim::NameToGuid " |
| logrus.Debugf(title+"Name %s", name) |
| |
| // Load the DLL and get a handle to the procedure we need |
| dll, proc, err := loadAndFind(procNameToGuid) |
| if dll != nil { |
| defer dll.Release() |
| } |
| if err != nil { |
| return |
| } |
| |
| // Convert name to uint16 pointer for calling the procedure |
| namep, err := syscall.UTF16PtrFromString(name) |
| if err != nil { |
| err = fmt.Errorf(title+" - Failed conversion of name %s to pointer %s", name, err) |
| logrus.Error(err) |
| return |
| } |
| |
| // Call the procedure itself. |
| logrus.Debugf("Calling proc") |
| r1, _, _ := proc.Call( |
| uintptr(unsafe.Pointer(namep)), |
| uintptr(unsafe.Pointer(&id))) |
| |
| if r1 != 0 { |
| err = fmt.Errorf(title+" - Win32 API call returned error r1=%d err=%s name=%s", |
| r1, syscall.Errno(r1), name) |
| logrus.Error(err) |
| return |
| } |
| |
| return |
| } |
