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/* Get section at specific index.
Copyright (C) 2005 Red Hat, Inc.
Contributed by Ulrich Drepper <drepper@redhat.com>, 2005.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, version 2.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <assert.h>
#include <stddef.h>
#include <stdlib.h>
#include "libelfP.h"
#ifndef LIBELFBITS
# define LIBELFBITS 32
#endif
Elf_Scn *
elfw2(LIBELFBITS,offscn) (elf, offset)
Elf *elf;
ElfW2(LIBELFBITS,Off) offset;
{
if (elf == NULL)
return NULL;
if (unlikely (elf->kind != ELF_K_ELF))
{
__libelf_seterrno (ELF_E_INVALID_HANDLE);
return NULL;
}
rwlock_rdlock (elf->lock);
Elf_Scn *result = NULL;
/* Find the section in the list. */
Elf_ScnList *runp = &elf->state.ELFW(elf,LIBELFBITS).scns;
while (1)
{
for (unsigned int i = 0; i < runp->cnt; ++i)
if (runp->data[i].shdr.ELFW(e,LIBELFBITS)->sh_offset == offset)
{
result = &runp->data[i];
/* If this section is empty, the following one has the same
sh_offset. We presume the caller is looking for a nonempty
section, so keep looking if this one is empty. */
if (runp->data[i].shdr.ELFW(e,LIBELFBITS)->sh_size != 0)
goto out;
}
runp = runp->next;
if (runp == NULL)
{
__libelf_seterrno (ELF_E_INVALID_OFFSET);
break;
}
}
out:
rwlock_unlock (elf->lock);
return result;
}
INTDEF(elfw2(LIBELFBITS,offscn))
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