101 lines
2.9 KiB
C
101 lines
2.9 KiB
C
/* Get loaded objects program headers.
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Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Jakub Jelinek <jakub@redhat.com>, 2001.
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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 License as
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published by the Free Software Foundation; either version 2.1 of the
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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; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <ldsodefs.h>
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#include <stddef.h>
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#include <bits/libc-lock.h>
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static void
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cancel_handler (void *arg __attribute__((unused)))
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{
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__rtld_lock_unlock_recursive (GL(dl_load_lock));
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}
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hidden_proto (__dl_iterate_phdr)
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int
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__dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
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size_t size, void *data), void *data)
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{
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struct link_map *l;
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struct dl_phdr_info info;
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int ret = 0;
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/* Make sure we are alone. */
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__rtld_lock_lock_recursive (GL(dl_load_lock));
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__libc_cleanup_push (cancel_handler, 0);
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for (l = GL(dl_loaded); l != NULL; l = l->l_next)
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{
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info.dlpi_addr = l->l_addr;
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info.dlpi_name = l->l_name;
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info.dlpi_phdr = l->l_phdr;
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info.dlpi_phnum = l->l_phnum;
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info.dlpi_adds = GL(dl_load_adds);
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info.dlpi_subs = GL(dl_load_adds) - GL(dl_nloaded);
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ret = callback (&info, sizeof (struct dl_phdr_info), data);
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if (ret)
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break;
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}
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/* Release the lock. */
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__libc_cleanup_pop (0);
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__rtld_lock_unlock_recursive (GL(dl_load_lock));
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return ret;
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}
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hidden_def (__dl_iterate_phdr)
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#ifdef SHARED
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weak_alias (__dl_iterate_phdr, dl_iterate_phdr);
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#else
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/* dl-support.c defines these and initializes them early on. */
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extern ElfW(Phdr) *_dl_phdr;
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extern size_t _dl_phnum;
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int
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dl_iterate_phdr (int (*callback) (struct dl_phdr_info *info,
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size_t size, void *data), void *data)
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{
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if (_dl_phnum != 0)
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{
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/* This entry describes this statically-linked program itself. */
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struct dl_phdr_info info;
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int ret;
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info.dlpi_addr = 0;
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info.dlpi_name = "";
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info.dlpi_phdr = _dl_phdr;
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info.dlpi_phnum = _dl_phnum;
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info.dlpi_adds = GL(dl_load_adds);
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info.dlpi_subs = GL(dl_load_adds) - GL(dl_nloaded);
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ret = (*callback) (&info, sizeof (struct dl_phdr_info), data);
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if (ret)
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return ret;
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}
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return __dl_iterate_phdr (callback, data);
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}
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#endif
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