| /* Report build ID information for a module. |
| Copyright (C) 2007, 2008 Red Hat, Inc. |
| This file is part of elfutils. |
| |
| This file is free software; you can redistribute it and/or modify |
| it under the terms of either |
| |
| * the GNU Lesser General Public License as published by the Free |
| Software Foundation; either version 3 of the License, or (at |
| your option) any later version |
| |
| or |
| |
| * the GNU General Public License as published by the Free |
| Software Foundation; either version 2 of the License, or (at |
| your option) any later version |
| |
| or both in parallel, as here. |
| |
| elfutils 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 copies of the GNU General Public License and |
| the GNU Lesser General Public License along with this program. If |
| not, see <http://www.gnu.org/licenses/>. */ |
| |
| #include "libdwflP.h" |
| |
| // XXX vs report changed module: punting old file |
| int |
| dwfl_module_report_build_id (Dwfl_Module *mod, |
| const unsigned char *bits, size_t len, |
| GElf_Addr vaddr) |
| { |
| if (mod == NULL) |
| return -1; |
| |
| if (mod->main.elf != NULL) |
| { |
| /* Once we know about a file, we won't take any lies about |
| its contents. The only permissible call is a no-op. */ |
| |
| if ((size_t) mod->build_id_len == len |
| && (mod->build_id_vaddr == vaddr || vaddr == 0) |
| && !memcmp (bits, mod->build_id_bits, len)) |
| return 0; |
| |
| __libdwfl_seterrno (DWFL_E_ALREADY_ELF); |
| return -1; |
| } |
| |
| if (vaddr != 0 && (vaddr < mod->low_addr || vaddr + len > mod->high_addr)) |
| { |
| __libdwfl_seterrno (DWFL_E_ADDR_OUTOFRANGE); |
| return -1; |
| } |
| |
| void *copy = NULL; |
| if (len > 0) |
| { |
| copy = malloc (len); |
| if (unlikely (copy == NULL)) |
| { |
| __libdwfl_seterrno (DWFL_E_NOMEM); |
| return -1; |
| } |
| memcpy (copy, bits, len); |
| } |
| |
| free (mod->build_id_bits); |
| |
| mod->build_id_bits = copy; |
| mod->build_id_len = len; |
| mod->build_id_vaddr = vaddr; |
| |
| return 0; |
| } |
| INTDEF (dwfl_module_report_build_id) |