commit e66190d2a97a713ae4b4786e60ca3d67ab8aa192
author Elliott Hughes <enh@google.com> Tue Dec 18 15:57:55 2012 -0800
committer Elliott Hughes <enh@google.com> Tue Dec 18 15:57:55 2012 -0800
tree 0bacac6bbb8916d803e2b6f2c991030790e0f718
parent 4c4b08a32eace878e4780ee340a57c43be950159

Check for unknown flags passed to dlopen(3).

Change-Id: I56f4aab0e5a1487bc32d2c4d231e8bd15c4ac8da

linker/linker.cpp

diff --git a/linker/linker.cpp b/linker/linker.cpp
index 0d0a8a9..0bdff99 100755
--- a/linker/linker.cpp
+++ b/linker/linker.cpp
@@ -966,7 +966,11 @@
   return 0;
 }
 
-soinfo* do_dlopen(const char* name) {
+soinfo* do_dlopen(const char* name, int flags) {
+  if ((flags & ~(RTLD_NOW|RTLD_LAZY|RTLD_LOCAL|RTLD_GLOBAL)) != 0) {
+    DL_ERR("invalid flags to dlopen: %x", flags);
+    return NULL;
+  }
   set_soinfo_pool_protection(PROT_READ | PROT_WRITE);
   soinfo* si = find_library(name);
   if (si != NULL) {