/* Creates an ELF handle from a possibly compressed file descriptor.
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Copyright (C) 2018 Red Hat, Inc.
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This file is part of elfutils.
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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 "libdwelfP.h"
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#include "libdwflP.h"
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#include "libelfP.h"
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#include <unistd.h>
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Elf *
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dwelf_elf_begin (int fd)
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{
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Elf *elf = NULL;
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Dwfl_Error e = __libdw_open_elf (fd, &elf);
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if (elf != NULL && elf_kind (elf) != ELF_K_NONE)
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return elf;
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/* Elf wasn't usable. Make sure there is a proper elf error message. */
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if (elf != NULL)
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elf_end (elf);
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if (e != DWFL_E_LIBELF)
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{
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/* Force a bad ELF error. */
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char badelf[EI_NIDENT] = { };
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Elf *belf = elf_memory (badelf, EI_NIDENT);
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elf32_getehdr (belf);
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elf_end (belf);
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}
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return NULL;
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}
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