Officially since C11 (and in reality FreeBSD since 3.0 with commit
1b46cb523d) errno has been defined to be a macro. Rename the symbol
to __libsys_errno and move it to FBSDprivate_1.0 and confine it entierly
to libsys for use by libthr. Add a FBSD_1.0 compat symbol for existing
binaries that were incorrectly linked to the errno symbol during
libc.so.7's lifetime.
This deliberately breaks linking software that directly links to errno.
Such software is broken and will fail in surprising ways if it becomes
threaded (e.g., if it triggers loading of a pam or nss module that
uses threads.)
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D46780
This has always been in libc and never exported directly. I accidently
included it along side some freebsd11_* symbols based on a tree where I
moved semctl(2).
Fixes: df1a09ba52 libsys: expose a few more symbols for libc's use
These private symbols are used by libc so expose as we do with
auxargs bits rather then relying on duplicate implementations in libc.
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D44114
__init_elf_aux_vector is now complied statically so don't try to export
it from the dynamic library.
Fixes: 8271d9b99a libsys: remove usage of pthread_once and _once_stub
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D44237
Continue to filter the public interface (elf_aux_info()), but entierly
relocate the private interfaces (_elf_aux_info(),
__init_elf_aux_vector(), and __elf_aux_vector) to libsys.
This ensures that rtld updates the correct (only) copy of
__elf_aux_vector. After 968a18975a
updates were confused and __getosreldate was failing, causing
the system to fall back to compat compat12 syscalls in some cases.
Return to explicitly linking libc to libsys and link libthr with libc
and libsys (in that order).
Reviewed by: kib
Differential Revision: https://reviews.freebsd.org/D43910
