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/* Partial initialization of ld.so loaded via static dlopen.
Copyright (C) 2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <assert.h>
/* Very special case: This object is built into the static libc, but
must know the layout of _rtld_global_ro. */
#define SHARED
#include <ldsodefs.h>
#include <rtld_static_init.h>
static const struct dlfcn_hook _dlfcn_hook =
{
.dlopen = __dlopen,
.dlclose = __dlclose,
.dlsym = __dlsym,
.dlvsym = __dlvsym,
.dlerror = __dlerror,
.dladdr = __dladdr,
.dladdr1 = __dladdr1,
.dlinfo = __dlinfo,
.dlmopen = __dlmopen,
.libc_dlopen_mode = __libc_dlopen_mode,
.libc_dlsym = __libc_dlsym,
.libc_dlvsym = __libc_dlvsym,
.libc_dlclose = __libc_dlclose,
};
void
__rtld_static_init (struct link_map *map)
{
const ElfW(Sym) *sym
= _dl_lookup_direct (map, "_rtld_global_ro",
0x9f28436a, /* dl_new_hash output. */
"GLIBC_PRIVATE",
0x0963cf85); /* _dl_elf_hash output. */
assert (sym != NULL);
struct rtld_global_ro *dl = DL_SYMBOL_ADDRESS (map, sym);
/* Perform partial initialization here. Note that this runs before
ld.so is relocated, so only members initialized without
relocations can be written here. */
#ifdef HAVE_AUX_VECTOR
extern __typeof (dl->_dl_auxv) _dl_auxv attribute_hidden;
dl->_dl_auxv = _dl_auxv;
extern __typeof (dl->_dl_clktck) _dl_clktck attribute_hidden;
dl->_dl_clktck = _dl_clktck;
#endif
dl->_dl_dlfcn_hook = &_dlfcn_hook;
extern __typeof (dl->_dl_hwcap) _dl_hwcap attribute_hidden;
dl->_dl_hwcap = _dl_hwcap;
extern __typeof (dl->_dl_hwcap2) _dl_hwcap2 attribute_hidden;
dl->_dl_hwcap2 = _dl_hwcap2;
extern __typeof (dl->_dl_minsigstacksize) _dl_minsigstacksize
attribute_hidden;
dl->_dl_minsigstacksize = _dl_minsigstacksize;
extern __typeof (dl->_dl_pagesize) _dl_pagesize attribute_hidden;
dl->_dl_pagesize = _dl_pagesize;
extern __typeof (dl->_dl_tls_static_align) _dl_tls_static_align
attribute_hidden;
dl->_dl_tls_static_align = _dl_tls_static_align;
extern __typeof (dl->_dl_tls_static_size) _dl_tls_static_size
attribute_hidden;
dl->_dl_tls_static_size = _dl_tls_static_size;
__rtld_static_init_arch (map, dl);
}
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