glibc/elf/Versions
Florian Weimer 82eef55f8f elf: Support dlvsym within libc.so
This commit adds a new _dl_open_hook entry for dlvsym and implements the
function using the existing dl_lookup_symbol_x function supplied by the
dynamic loader.

A new hook variable, _dl_open_hook2, is introduced, which should make
this change suitable for backporting: For old statically linked
binaries, __libc_dlvsym will always return NULL.
2018-01-04 18:46:24 +01:00

83 lines
2.0 KiB
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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_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;
# 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 {
# Functions which are interposed from libc.so.
calloc; free; malloc; realloc;
_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_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;
_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;
}
}