diff --git a/programs/develop/metcc/trunk/libc/include/mesys.h b/programs/develop/metcc/trunk/libc/include/mesys.h
index b263eed2b0..8eea5e6d09 100644
--- a/programs/develop/metcc/trunk/libc/include/mesys.h
+++ b/programs/develop/metcc/trunk/libc/include/mesys.h
@@ -1,24 +1,37 @@
 #ifndef mesys_h
 #define mesys_h
+/*
 #ifdef GNUC
 #define stdcall __stdcall
 #define cdecl __cdecl
 #else
-#define stdcall __attribute__ ((__stdcall))
-#define cdecl  __attribute__ ((__cdecl))
+#define stdcall  ((__stdcall))
+#define cdecl    ((__cdecl))
 #endif
+*/
+//#ifdef GNUC
+//#define stdcall __stdcall
+//#else
+#define stdcall __attribute__ (( ))
+//#endif
 
-typedef unsigned long dword;
+typedef unsigned int dword;
 typedef unsigned char byte;
 typedef unsigned short word;
 
 extern void stdcall _msys_draw_window(int xcoord,int ycoord, int xsize,
-			       int ysize,int workcolor,int type,
-			       int captioncolor,int windowtype,int bordercolor);
-extern int  stdcall _msys_read_file(char* filename,int fileoffset,int size,void* data,
-                     int* filesize);
-extern int  stdcall _msys_write_file(char* filename,int fileoffset, int size, void* data);
-extern int  stdcall _msys_create_file(char* filename);
+                               int ysize,int workcolor,int type,
+                               int captioncolor,int windowtype,int bordercolor);
+
+//-----------------------------------------------------------------------------------
+//------------------------KolibriOS system acces to files----------------------------
+//-----------------------------------------------------------------------------------
+extern dword stdcall _ksys_get_filesize(char *filename);
+extern dword stdcall _ksys_readfile(char *filename,dword pos,dword blocksize,void *data);
+extern dword stdcall _ksys_rewritefile(char *filename,dword blocksize,void *data);
+extern dword stdcall _ksys_appendtofile(char *filename,dword pos,dword blocksize,void *data);
+//-----------------------------------------------------------------------------------
+
 extern void stdcall _msys_run_program(char* filename,char* parameters);
 extern void stdcall _msys_debug_out(int c);
 extern void debug_out_str(char* str);
@@ -100,9 +113,6 @@ extern void stdcall _msys_sound_speaker_play(void* data);
 extern void stdcall _msys_write_text(int x,int y,int color,char* text,int len);
 extern void* stdcall  _msys_start_thread(void (* func_ptr)(void),int stack_size,int* pid);
 extern void stdcall _msys_window_redraw(int status);
-extern void* malloc(int);
-extern void  free(void*);
-extern void* realloc(void*,int);
 
 extern dword* stdcall _msys_cofflib_load(char* name);
 extern char* stdcall _msys_cofflib_getproc(void* exp,char* sz_name);
diff --git a/programs/develop/metcc/trunk/libc/include/stdio.h b/programs/develop/metcc/trunk/libc/include/stdio.h
index 2336f4df79..4cf4026f6e 100644
--- a/programs/develop/metcc/trunk/libc/include/stdio.h
+++ b/programs/develop/metcc/trunk/libc/include/stdio.h
@@ -3,12 +3,12 @@
 #include "mesys.h"
 #define NULL ((void*)0)
 typedef struct {
-  char* buffer;
-  int   buffersize;
-  int   filesize;
-  int   filepos;
-  char* filename;
-  int   mode;
+  char*   buffer;
+  dword   buffersize;
+  dword   filesize;
+  dword   filepos;
+  char*   filename;
+  int     mode;
 } FILE;
 #define FILE_OPEN_READ 0
 #define FILE_OPEN_WRITE 1
@@ -17,7 +17,7 @@ typedef struct {
 #define FILE_OPEN_PLUS 8
 #define EOF -1
 extern FILE* fopen(const char* filename, const char *mode);
-extern int fclose(FILE* file);
+extern void fclose(FILE* file);
 extern int feof(FILE* file);
 extern int fflush(FILE* file);
 extern int fgetc(FILE* file);
@@ -26,7 +26,7 @@ extern int fgetpos(FILE* file,fpos_t* pos);
 extern int fsetpos(FILE* file,const fpos_t* pos);
 extern int fputc(int c,FILE* file);
 extern int fread(void* buffer,int size,int count,FILE* file);
-extern int fwrite(const void* buffer,int size,int count,FILE* file);
+extern int fwrite(void *buffer,int size,int count,FILE* file);
 extern long ftell(FILE* file);
 #define SEEK_CUR 0
 #define SEEK_END 1
diff --git a/programs/develop/metcc/trunk/libc/include/stdlib.h b/programs/develop/metcc/trunk/libc/include/stdlib.h
index 153550f83d..fd25a8ecbc 100644
--- a/programs/develop/metcc/trunk/libc/include/stdlib.h
+++ b/programs/develop/metcc/trunk/libc/include/stdlib.h
@@ -1,3 +1,4 @@
+#include <mesys.h>
 //#define isspace(c) ((c)==' ')
 #define abs(i) (((i)<0)?(-(i)):(i))
 
@@ -7,3 +8,7 @@ extern char tolower(char c);
 extern char toupper(char c);
 extern void itoab(int n,char* s,int  b);
 extern void itoa(int n,char* s);
+
+extern void* malloc(dword size);
+extern void  free(void *pointer);
+extern void* realloc(void* pointer,dword size);
\ No newline at end of file