dlfcn: Rework static dlopen hooks

Consolidate all hooks structures into a single one.  There are
no static dlopen ABI concerns because glibc 2.34 already comes
with substantial ABI-incompatible changes in this area.  (Static
dlopen requires the exact same dynamic glibc version that was used
for static linking.)

The new approach uses a pointer to the hooks structure into
_rtld_global_ro and initalizes it in __rtld_static_init.  This avoids
a back-and-forth with various callback functions.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

1 files changed, 1 insertions, 1 deletions

diff --git a/dlfcn/dlopenold.c b/dlfcn/dlopenold.c
index 0fe5f24cc5..9115501ac1 100644
--- a/dlfcn/dlopenold.c
+++ b/dlfcn/dlopenold.c
@@ -71,7 +71,7 @@ __dlopen_nocheck (const char *file, int mode)
   args.mode = mode;
 
   if (!rtld_active ())
-    return _dlfcn_hook->dlopen (file, mode, RETURN_ADDRESS (0));
+    return GLRO (dl_dlfcn_hook)->dlopen (file, mode, RETURN_ADDRESS (0));
 
   return _dlerror_run (dlopen_doit, &args) ? NULL : args.new;
 }