[complement-svn] SF.net SVN: complement: [1531] trunk/complement/explore/inquiry/shades

[<com...@us...>]

Revision: 1531
          http://svn.sourceforge.net/complement/?rev=1531&view=rev
Author:   complement
Date:     2007-02-21 05:03:16 -0800 (Wed, 21 Feb 2007)

Log Message:
-----------
juniper investigations

Added Paths:
-----------
    trunk/complement/explore/inquiry/shades/juniper/
    trunk/complement/explore/inquiry/shades/juniper/Makefile
    trunk/complement/explore/inquiry/shades/juniper/Makefile.inc
    trunk/complement/explore/inquiry/shades/juniper/str_interposer.c


Property changes on: trunk/complement/explore/inquiry/shades/juniper
___________________________________________________________________
Name: svn:ignore
   + obj


Added: trunk/complement/explore/inquiry/shades/juniper/Makefile
===================================================================
--- trunk/complement/explore/inquiry/shades/juniper/Makefile	                        (rev 0)
+++ trunk/complement/explore/inquiry/shades/juniper/Makefile	2007-02-21 13:03:16 UTC (rev 1531)
@@ -0,0 +1,13 @@
+# -*- Makefile -*- Time-stamp: <04/01/09 16:53:50 ptr>
+# $Id: Makefile 1356 2006-11-01 13:34:19Z complement $
+
+SRCROOT := ../../..
+COMPILER_NAME := gcc
+
+include Makefile.inc
+include ${SRCROOT}/Makefiles/top.mak
+
+DEFS += -D_GNU_SOURCE
+
+LDFLAGS += -ldl
+

Added: trunk/complement/explore/inquiry/shades/juniper/Makefile.inc
===================================================================
--- trunk/complement/explore/inquiry/shades/juniper/Makefile.inc	                        (rev 0)
+++ trunk/complement/explore/inquiry/shades/juniper/Makefile.inc	2007-02-21 13:03:16 UTC (rev 1531)
@@ -0,0 +1,7 @@
+# -*- makefile -*- Time-stamp: <04/01/12 15:37:40 ptr>
+
+LIBNAME = test
+MAJOR = 0
+MINOR = 0
+PATCH = 0
+SRC_C = str_interposer.c

Added: trunk/complement/explore/inquiry/shades/juniper/str_interposer.c
===================================================================
--- trunk/complement/explore/inquiry/shades/juniper/str_interposer.c	                        (rev 0)
+++ trunk/complement/explore/inquiry/shades/juniper/str_interposer.c	2007-02-21 13:03:16 UTC (rev 1531)
@@ -0,0 +1,78 @@
+/* Example from: http://developers.sun.com/solaris/articles/lib_interposers_code.html
+ *
+ */
+
+/* Example of a library interposer: interpose on 
+ * malloc().
+ * Build and use this interposer as following:
+ * cc -o malloc_interposer.so -G -Kpic malloc_interposer.c
+ * setenv LD_PRELOAD $cwd/malloc_interposer.so
+ * run the app
+ * unsetenv LD_PRELOAD
+ */
+
+#include <stdio.h>
+#include <dlfcn.h>
+
+#if 0
+void *malloc(size_t size)
+{
+  static void * (*func)();
+
+  if(!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "malloc");
+  printf("malloc(%d) is called\n", size);     
+  return(func(size));
+}
+#endif
+
+char *strcpy( char *s1, const char *s2 )
+{
+  static void * (*func)();
+
+  if(!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strcpy");
+
+  printf( "strcpy: '%s'\n", s2 );
+
+  return func( s1, s2 );
+}
+
+char *strdup(const char *s1)
+{
+  static void * (*func)();
+
+  if(!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strdup");
+
+  printf( "strdup: '%s'\n", s1 );
+
+  return func( s1 );
+}
+
+char *strncat(char *s1, const char *s2, size_t n)
+{
+  static void * (*func)();
+  char *r;
+
+  if(!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strncat");
+
+  r = func( s1, s2, n );
+  printf( "strncat: '%s'\n", r );
+
+  return r;
+}
+
+char *strtok(char *s1, const char *s2)
+{
+  static void * (*func)();
+
+  if(!func)
+    func = (void *(*)()) dlsym(RTLD_NEXT, "strtok");
+
+  printf( "strtok: '%s'\n", s1 );
+
+  return func( s1, s2 );
+}
+


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