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85 lines
3.0 KiB
C
85 lines
3.0 KiB
C
/* Partial initialization of ld.so loaded via static dlopen.
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Copyright (C) 2021-2024 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <assert.h>
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/* Very special case: This object is built into the static libc, but
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must know the layout of _rtld_global_ro. */
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#define SHARED
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#include <ldsodefs.h>
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#include <rtld_static_init.h>
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static const struct dlfcn_hook _dlfcn_hook =
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{
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.dlopen = __dlopen,
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.dlclose = __dlclose,
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.dlsym = __dlsym,
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.dlvsym = __dlvsym,
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.dlerror = __dlerror,
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.dladdr = __dladdr,
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.dladdr1 = __dladdr1,
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.dlinfo = __dlinfo,
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.dlmopen = __dlmopen,
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.libc_dlopen_mode = __libc_dlopen_mode,
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.libc_dlsym = __libc_dlsym,
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.libc_dlvsym = __libc_dlvsym,
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.libc_dlclose = __libc_dlclose,
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};
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void
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__rtld_static_init (struct link_map *map)
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{
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const ElfW(Sym) *sym
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= _dl_lookup_direct (map, "_rtld_global_ro",
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0x9f28436a, /* dl_new_hash output. */
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"GLIBC_PRIVATE",
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0x0963cf85); /* _dl_elf_hash output. */
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assert (sym != NULL);
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struct rtld_global_ro *dl = DL_SYMBOL_ADDRESS (map, sym);
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/* Perform partial initialization here. Note that this runs before
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ld.so is relocated, so only members initialized without
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relocations can be written here. */
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#ifdef HAVE_AUX_VECTOR
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extern __typeof (dl->_dl_auxv) _dl_auxv attribute_hidden;
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dl->_dl_auxv = _dl_auxv;
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extern __typeof (dl->_dl_clktck) _dl_clktck attribute_hidden;
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dl->_dl_clktck = _dl_clktck;
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#endif
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dl->_dl_dlfcn_hook = &_dlfcn_hook;
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extern __typeof (dl->_dl_hwcap) _dl_hwcap attribute_hidden;
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dl->_dl_hwcap = _dl_hwcap;
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extern __typeof (dl->_dl_hwcap2) _dl_hwcap2 attribute_hidden;
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dl->_dl_hwcap2 = _dl_hwcap2;
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extern __typeof (dl->_dl_minsigstacksize) _dl_minsigstacksize
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attribute_hidden;
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dl->_dl_minsigstacksize = _dl_minsigstacksize;
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extern __typeof (dl->_dl_pagesize) _dl_pagesize attribute_hidden;
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dl->_dl_pagesize = _dl_pagesize;
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extern __typeof (dl->_dl_tls_static_align) _dl_tls_static_align
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attribute_hidden;
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dl->_dl_tls_static_align = _dl_tls_static_align;
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extern __typeof (dl->_dl_tls_static_size) _dl_tls_static_size
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attribute_hidden;
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dl->_dl_tls_static_size = _dl_tls_static_size;
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dl->_dl_find_object = _dl_find_object;
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__rtld_static_init_arch (map, dl);
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}
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