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- /* Locate the shared object symbol nearest a given address.
- Copyright (C) 2003-2026 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 <dlfcn.h>
- #include <ldsodefs.h>
- #include <shlib-compat.h>
- int
- __dladdr1 (const void *address, Dl_info *info, void **extra, int flags)
- {
- #ifdef SHARED
- if (GLRO (dl_dlfcn_hook) != NULL)
- return GLRO (dl_dlfcn_hook)->dladdr1 (address, info, extra, flags);
- #endif
- switch (flags)
- {
- default: /* Make this an error? */
- case 0:
- return _dl_addr (address, info, NULL, NULL);
- case RTLD_DL_SYMENT:
- return _dl_addr (address, info, NULL, (const ElfW(Sym) **) extra);
- case RTLD_DL_LINKMAP:
- return _dl_addr (address, info, (struct link_map **) extra, NULL);
- }
- }
- versioned_symbol (libc, __dladdr1, dladdr1, GLIBC_2_34);
- #if OTHER_SHLIB_COMPAT (libdl, GLIBC_2_3_3, GLIBC_2_34)
- compat_symbol (libdl, __dladdr1, dladdr1, GLIBC_2_3_3);
- #endif
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