Add the preloader itself as argv[0] and remove it again before running

libs/wine/config.c

@@ -279,6 +279,7 @@ static void preloader_exec( char **argv, char **envp, int use_preloader )
     {
         static const char preloader[] = "wine-preloader";
         char *p, *full_name;
+        char **last_arg = argv, **new_argv;
 
         if (!(p = strrchr( argv[0], '/' ))) p = argv[0];
         else p++;
@@ -286,8 +287,15 @@ static void preloader_exec( char **argv, char **envp, int use_preloader )
         full_name = xmalloc( p - argv[0] + sizeof(preloader) );
         memcpy( full_name, argv[0], p - argv[0] );
         memcpy( full_name + (p - argv[0]), preloader, sizeof(preloader) );
-        if (envp) execve( full_name, argv, envp );
-        else execv( full_name, argv );
+
+        /* make a copy of argv */
+        while (*last_arg) last_arg++;
+        new_argv = xmalloc( (last_arg - argv + 2) * sizeof(*argv) );
+        memcpy( new_argv + 1, argv, (last_arg - argv + 1) * sizeof(*argv) );
+        new_argv[0] = full_name;
+        if (envp) execve( full_name, new_argv, envp );
+        else execv( full_name, new_argv );
+        free( new_argv );
         free( full_name );
         return;
     }

loader/preloader.c

@@ -2,7 +2,7 @@
  * Preloader for ld.so
  *
  * Copyright (C) 1995,96,97,98,99,2000,2001,2002 Free Software Foundation, Inc.
- * Copyright (C) 2004 Mike McCormack for Codeweavers
+ * Copyright (C) 2004 Mike McCormack for CodeWeavers
  * Copyright (C) 2004 Alexandre Julliard
  *
  * This library is free software; you can redistribute it and/or
@@ -685,6 +685,7 @@ void* wld_start( void **stack )
 
     pargc = *stack;
     argv = (char **)pargc + 1;
+    if (*pargc < 2) fatal_error( "Usage: %s wine_binary [args]\n", argv[0] );
 
     /* skip over the parameters */
     p = argv + *pargc + 1;
@@ -717,7 +718,7 @@ void* wld_start( void **stack )
               PROT_NONE, MAP_FIXED | MAP_PRIVATE | MAP_ANON | MAP_NORESERVE, -1, 0 );
 
     /* load the main binary */
-    map_so_lib( argv[0], &main_binary_map );
+    map_so_lib( argv[1], &main_binary_map );
 
     /* load the ELF interpreter */
     interp = (char *)main_binary_map.l_addr + main_binary_map.l_interp;
@@ -743,6 +744,10 @@ void* wld_start( void **stack )
     SET_NEW_AV(10, AT_EGID, get_auxiliary( av, AT_EGID, getegid() ) );
 #undef SET_NEW_AV
 
+    /* get rid of first argument */
+    pargc[1] = pargc[0] - 1;
+    *stack = pargc + 1;
+
     set_auxiliary_values( av, new_av, stack );
 
 #ifdef DUMP_AUX_INFO