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63 lines
1.8 KiB
C
63 lines
1.8 KiB
C
/* Returns the file name and build ID stored in the .gnu_altdebuglink if found.
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Copyright (C) 2014 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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ssize_t
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dwelf_dwarf_gnu_debugaltlink (Dwarf *dwarf,
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const char **name_p,
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const void **build_idp)
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{
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Elf_Data *data = dwarf->sectiondata[IDX_gnu_debugaltlink];
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if (data == NULL)
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{
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return 0;
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}
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const void *ptr = memchr (data->d_buf, '\0', data->d_size);
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if (ptr == NULL)
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{
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__libdw_seterrno (DWARF_E_INVALID_ELF);
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return -1;
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}
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size_t build_id_len = data->d_size - (ptr - data->d_buf + 1);
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if (build_id_len == 0 || (size_t) (ssize_t) build_id_len != build_id_len)
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{
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__libdw_seterrno (DWARF_E_INVALID_ELF);
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return -1;
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}
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*name_p = data->d_buf;
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*build_idp = ptr + 1;
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return build_id_len;
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}
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INTDEF(dwelf_dwarf_gnu_debugaltlink)
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