winscard: Implement SCardCancel().

dlls/winscard/unixlib.c

@@ -35,6 +35,7 @@ LONG SCardEstablishContext( UINT64, const void *, const void *, UINT64 * );
 LONG SCardReleaseContext( UINT64 );
 LONG SCardIsValidContext( UINT64 );
 LONG SCardGetStatusChange( UINT64, UINT64, struct reader_state *, UINT64 );
+LONG SCardCancel( UINT64 );
 
 static NTSTATUS scard_establish_context( void *args )
 {
@@ -60,10 +61,17 @@ static NTSTATUS scard_get_status_change( void *args )
     return SCardGetStatusChange( params->handle, params->timeout, params->states, params->count );
 }
 
+static NTSTATUS scard_cancel( void *args )
+{
+    struct scard_cancel_params *params = args;
+    return SCardCancel( params->handle );
+}
+
 const unixlib_entry_t __wine_unix_call_funcs[] =
 {
     scard_establish_context,
     scard_release_context,
     scard_is_valid_context,
     scard_get_status_change,
+    scard_cancel,
 };

dlls/winscard/unixlib.h

@@ -54,10 +54,16 @@ struct scard_get_status_change_params
     UINT64 count;
 };
 
+struct scard_cancel_params
+{
+    UINT64 handle;
+};
+
 enum winscard_funcs
 {
     unix_scard_establish_context,
     unix_scard_release_context,
     unix_scard_is_valid_context,
     unix_scard_get_status_change,
+    unix_scard_cancel,
 };

dlls/winscard/winscard.c

@@ -201,11 +201,20 @@ LONG WINAPI SCardListReadersW(SCARDCONTEXT context, const WCHAR *groups, WCHAR *
     return SCARD_E_NO_READERS_AVAILABLE;
 }
 
-LONG WINAPI SCardCancel(SCARDCONTEXT context)
+LONG WINAPI SCardCancel( SCARDCONTEXT context )
 {
-    FIXME("(%Ix) stub\n", context);
-    SetLastError(ERROR_CALL_NOT_IMPLEMENTED);
-    return SCARD_F_INTERNAL_ERROR;
+    struct handle *handle = (struct handle *)context;
+    struct scard_cancel_params params;
+    LONG ret;
+
+    TRACE( "%Ix\n", context );
+
+    if (!handle || handle->magic != CONTEXT_MAGIC) return ERROR_INVALID_HANDLE;
+
+    params.handle = handle->unix_handle;
+    ret = UNIX_CALL( scard_cancel, &params );
+    TRACE( "returning %#lx\n", ret );
+    return ret;
 }
 
 static LONG map_states_inA( const SCARD_READERSTATEA *src, struct reader_state *dst, DWORD count )