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85 lines
2.2 KiB
C
85 lines
2.2 KiB
C
/* Report build ID information for a module.
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Copyright (C) 2007, 2008 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 "libdwflP.h"
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// XXX vs report changed module: punting old file
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int
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dwfl_module_report_build_id (Dwfl_Module *mod,
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const unsigned char *bits, size_t len,
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GElf_Addr vaddr)
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{
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if (mod == NULL)
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return -1;
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if (mod->main.elf != NULL)
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{
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/* Once we know about a file, we won't take any lies about
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its contents. The only permissible call is a no-op. */
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if ((size_t) mod->build_id_len == len
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&& (mod->build_id_vaddr == vaddr || vaddr == 0)
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&& !memcmp (bits, mod->build_id_bits, len))
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return 0;
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__libdwfl_seterrno (DWFL_E_ALREADY_ELF);
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return -1;
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}
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if (vaddr != 0 && (vaddr < mod->low_addr || vaddr + len > mod->high_addr))
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{
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__libdwfl_seterrno (DWFL_E_ADDR_OUTOFRANGE);
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return -1;
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}
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void *copy = NULL;
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if (len > 0)
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{
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copy = malloc (len);
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if (unlikely (copy == NULL))
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{
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__libdwfl_seterrno (DWFL_E_NOMEM);
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return -1;
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}
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memcpy (copy, bits, len);
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}
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free (mod->build_id_bits);
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mod->build_id_bits = copy;
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mod->build_id_len = len;
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mod->build_id_vaddr = vaddr;
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return 0;
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}
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INTDEF (dwfl_module_report_build_id)
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