5.3

1 files changed, 14 insertions, 21 deletions

diff --git a/lib/ShadowCopy/shadow.h b/lib/ShadowCopy/shadow.h
index ea113dae..66d29300 100644
--- a/lib/ShadowCopy/shadow.h
+++ b/lib/ShadowCopy/shadow.h
@@ -31,44 +31,37 @@ typedef ShadowData* ShadowHandle;
 
 //volumeName *must* end with "\"
 SHADOWDLL_API
-ShadowHandle createShadowCopy(const wchar_t* volumeName,      // in  Returns nullptr on failure!
-                              wchar_t*		 errorMessage,    // out
-                              unsigned int	 errorBufferLen); // in
+ShadowHandle createShadowCopy(const wchar_t* volumeName); //returns nullptr on failure!
 
-//don't forget to release the backupHandle after shadow copy is not needed anymore!
+//release the backupHandle after shadow copy is not needed anymore!
 SHADOWDLL_API
 void releaseShadowCopy(ShadowHandle handle);
 
 SHADOWDLL_API
-void getShadowVolume(ShadowHandle handle, //shadowVolName does *not* end with "\"
-                     wchar_t*	  buffer,
-                     unsigned int bufferLen);
+const wchar_t* getShadowVolume(ShadowHandle handle); //never fails, returns shadowVolName, never ending with "\"
 
+//get last error message if any of the functions above fail
+SHADOWDLL_API
+const wchar_t* getLastError(); //no nullptr check required!
 //##########################################################################################
 
 
 /*----------
   |typedefs|
   ----------*/
-typedef ShadowHandle (*CreateShadowCopyFct)(const wchar_t* volumeName,
-                                            wchar_t*	    errorMessage,
-                                            unsigned int   errorBufferLen);
-
-typedef void (*ReleaseShadowCopyFct)(ShadowHandle handle);
-
-typedef void (*GetShadowVolumeFct)(ShadowHandle handle,
-                                   wchar_t*	   buffer,
-                                   unsigned int bufferLen);
-
+typedef ShadowHandle   (*FunType_createShadowCopy )(const wchar_t* volumeName);
+typedef void           (*FunType_releaseShadowCopy)(ShadowHandle handle);
+typedef const wchar_t* (*FunType_getShadowVolume  )(ShadowHandle handle);
+typedef const wchar_t* (*FunType_getLastError)();
 
 /*--------------
   |symbol names|
   --------------*/
 //(use const pointers to ensure internal linkage)
-const char createShadowCopyFctName [] = "createShadowCopy";
-const char releaseShadowCopyFctName[] = "releaseShadowCopy";
-const char getShadowVolumeFctName  [] = "getShadowVolume";
-
+const char funName_createShadowCopy [] = "createShadowCopy";
+const char funName_releaseShadowCopy[] = "releaseShadowCopy";
+const char funName_getShadowVolume  [] = "getShadowVolume";
+const char funName_getLastError     [] = "getLastError";
 /*---------------
   |library names|
   ---------------*/