glibc/elf/Versions
Florian Weimer 89baed0b93 Revert "Detect ld.so and libc.so version inconsistency during startup"
This reverts commit 6f85dbf102.

Once this change hits the release branches, it will require relinking
of all statically linked applications before static dlopen works
again, for the majority of updates on release branches: The NEWS file
is regularly updated with bug references, so the __libc_early_init
suffix changes, and static dlopen cannot find the function anymore.

While this ABI check is still technically correct (we do require
rebuilding & relinking after glibc updates to keep static dlopen
working), it is too drastic for stable release branches.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
2022-08-25 18:46:43 +02:00

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libc {
GLIBC_2.0 {
%ifdef EXPORT_UNWIND_FIND_FDE
__deregister_frame_info; __register_frame_info;
%endif
}
GLIBC_2.1 {
# functions used in other libraries
_dl_mcount_wrapper; _dl_mcount_wrapper_check;
}
GLIBC_2.2.4 {
dl_iterate_phdr;
}
%ifdef EXPORT_UNWIND_FIND_FDE
# Needed for SHLIB_COMPAT calls using this version.
GLIBC_2.2.5 {
}
GCC_3.0 {
__deregister_frame_info_bases; __register_frame_info_bases;
__register_frame_info_table_bases; _Unwind_Find_FDE;
}
%endif
GLIBC_2.35 {
_dl_find_object;
}
GLIBC_ABI_DT_RELR {
# This symbol is used only for empty version map and will be removed
# by scripts/versions.awk.
__placeholder_only_for_empty_version_map;
}
GLIBC_PRIVATE {
# functions used in other libraries
__libc_early_init;
# Internal error handling support. Interposes the functions in ld.so.
_dl_signal_exception; _dl_catch_exception;
_dl_signal_error; _dl_catch_error;
}
}
ld {
GLIBC_2.0 {
_r_debug;
}
GLIBC_2.1 {
# functions used in other libraries
_dl_mcount;
# historically used by Garbage Collectors
__libc_stack_end;
}
GLIBC_2.3 {
# runtime interface to TLS
__tls_get_addr;
}
GLIBC_2.4 {
# stack canary
__stack_chk_guard;
}
GLIBC_2.34 {
__rtld_version_placeholder;
}
GLIBC_PRIVATE {
# Those are in the dynamic linker, but used by libc.so.
__libc_enable_secure;
_dl_allocate_tls; _dl_allocate_tls_init;
_dl_argv; _dl_find_dso_for_object; _dl_get_tls_static_info;
_dl_deallocate_tls; _dl_make_stack_executable;
_dl_rtld_di_serinfo; _dl_starting_up; _dl_fatal_printf;
_dl_audit_symbind_alt; _dl_audit_preinit;
_rtld_global; _rtld_global_ro;
# Only here for gdb while a better method is developed.
_dl_debug_state;
# Pointer protection.
__pointer_chk_guard;
# Internal error handling support.
_dl_exception_create; _dl_exception_create_format; _dl_exception_free;
# Internal error handling support. Interposed by libc.so.
_dl_signal_exception; _dl_catch_exception;
_dl_signal_error; _dl_catch_error;
# Set value of a tunable.
__tunable_get_val;
}
}