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88 lines
2.2 KiB
88 lines
2.2 KiB
4 months ago
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/* Return number of sections in the ELF file.
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Copyright (C) 2002, 2009, 2015 Red Hat, Inc.
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This file is part of elfutils.
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Written by Ulrich Drepper <drepper@redhat.com>, 2002.
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This file is free software; you can redistribute it and/or modify
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it under the terms of either
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* the GNU Lesser General Public License as published by the Free
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Software Foundation; either version 3 of the License, or (at
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your option) any later version
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or
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* the GNU General Public License as published by the Free
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Software Foundation; either version 2 of the License, or (at
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your option) any later version
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or both in parallel, as here.
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elfutils is distributed in the hope that it will be useful, but
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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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General Public License for more details.
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You should have received copies of the GNU General Public License and
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the GNU Lesser General Public License along with this program. If
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not, see <http://www.gnu.org/licenses/>. */
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <assert.h>
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#include <gelf.h>
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#include <stddef.h>
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#include "libelfP.h"
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int
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internal_function
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__elf_getshdrnum_rdlock (Elf *elf, size_t *dst)
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{
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int result = 0;
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int idx;
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if (elf == NULL)
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return -1;
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if (unlikely (elf->kind != ELF_K_ELF))
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{
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__libelf_seterrno (ELF_E_INVALID_HANDLE);
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return -1;
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}
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idx = elf->state.elf.scns_last->cnt;
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if (idx != 0
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|| (elf->state.elf.scns_last
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!= (elf->class == ELFCLASS32
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|| (offsetof (Elf, state.elf32.scns)
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== offsetof (Elf, state.elf64.scns))
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? &elf->state.elf32.scns : &elf->state.elf64.scns)))
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/* There is at least one section. */
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*dst = 1 + elf->state.elf.scns_last->data[idx - 1].index;
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else
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*dst = 0;
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return result;
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}
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int
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elf_getshdrnum (Elf *elf, size_t *dst)
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{
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int result;
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if (elf == NULL)
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return -1;
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rwlock_rdlock (elf->lock);
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result = __elf_getshdrnum_rdlock (elf, dst);
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rwlock_unlock (elf->lock);
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return result;
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}
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/* Alias for the deprecated name. */
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strong_alias (elf_getshdrnum, elf_getshnum)
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