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, 0 insertions, 1 deletions

diff --git a/elf/Versions b/elf/Versions
index be88c48e6d..a12d64e8db 100644
--- a/elf/Versions
+++ b/elf/Versions
@@ -23,7 +23,6 @@ libc {
   GLIBC_PRIVATE {
     # functions used in other libraries
     _dl_addr;
-    _dl_open_hook; _dl_open_hook2;
     _dl_sym; _dl_vsym;
     __libc_dlclose; __libc_dlopen_mode; __libc_dlsym; __libc_dlvsym;
     __libc_early_init;