4 Commits

Author	SHA1	Message	Date
Florian Weimer	466c1ea15f	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>	2021-06-03 09:12:05 +02:00
Florian Weimer	9ec7fff6cd	elf: Initialize GLRO (dl_minsigstacksize) after static dlopen ... This is another field of _rtld_global_ro that benefits from initialization in __rtld_static_init. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>	2021-05-20 18:56:42 +02:00
Florian Weimer	9dc21009a4	elf: Move static TLS size and alignment into _rtld_global_ro ... This helps to clarify that the caching of these fields in libpthread (in __static_tls_size, __static_tls_align_m1) is unnecessary. Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	2021-05-17 10:17:41 +02:00
Florian Weimer	78b31cc834	elf: Partially initialize ld.so after static dlopen (bug 20802) ... After static dlopen, a copy of ld.so is loaded into the inner namespace, but that copy is not initialized at all. Some architectures run into serious problems as result, which is why the _dl_var_init mechanism was invented. With libpthread moving into libc and parts into ld.so, more architectures impacted, so it makes sense to switch to a generic mechanism which performs the partial initialization. As a result, getauxval now works after static dlopen (bug 20802). Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>	2021-05-17 10:06:57 +02:00