Do not store any metadata where the user (was) legitimate to write

[simgrid.git] / src / xbt / mmalloc / mmorecore.c

diff --git a/src/xbt/mmalloc/mmorecore.c b/src/xbt/mmalloc/mmorecore.c
index d374c7e..dfd9cf7 100644 (file)
--- a/src/xbt/mmalloc/mmorecore.c
+++ b/src/xbt/mmalloc/mmorecore.c
@@ -3,8 +3,7 @@
 
    Contributed by Fred Fish at Cygnus Support.   fnf@cygnus.com */
 
 
    Contributed by Fred Fish at Cygnus Support.   fnf@cygnus.com */
 

-/* Copyright (c) 2010. The SimGrid Team.
- * All rights reserved.                                                     */
+/* Copyright (c) 2010-2012. The SimGrid Team. All rights reserved.          */

 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */
 
 /* This program is free software; you can redistribute it and/or modify it
  * under the terms of the license (GNU LGPL) which comes with this package. */


@@ -64,6 +63,7 @@ void *mmorecore(struct mdesc *mdp, int size)
   void *mapto;                  /* Address we actually mapped to */
   char buf = 0;                 /* Single byte to write to extend mapped file */
 
   void *mapto;                  /* Address we actually mapped to */
   char buf = 0;                 /* Single byte to write to extend mapped file */
 

+//  fprintf(stderr,"increase %p by %u\n",mdp,size);

   if (pagesize == 0)
     pagesize = getpagesize();
 
   if (pagesize == 0)
     pagesize = getpagesize();
 


@@ -120,7 +120,11 @@ void *mmorecore(struct mdesc *mdp, int size)
                    MAP_FIXED, MAP_ANON_OR_FD(mdp), foffset);
 
       if (mapto == (void *) -1/* That's MAP_FAILED */) {
                    MAP_FIXED, MAP_ANON_OR_FD(mdp), foffset);
 
       if (mapto == (void *) -1/* That's MAP_FAILED */) {

-        fprintf(stderr,"Internal error: mmap returned MAP_FAILED! error: %s",strerror(errno));
+        char buff[1024];
+        fprintf(stderr,"Internal error: mmap returned MAP_FAILED! error: %s\n",strerror(errno));
+        sprintf(buff,"cat /proc/%d/maps",getpid());
+        system(buff);
+        sleep(1);

         abort();
       }
 
         abort();
       }