diff options
Diffstat (limited to 'libdwfl/dwfl_module_report_build_id.c')
| -rw-r--r-- | libdwfl/dwfl_module_report_build_id.c | 101 |
1 files changed, 101 insertions, 0 deletions
diff --git a/libdwfl/dwfl_module_report_build_id.c b/libdwfl/dwfl_module_report_build_id.c new file mode 100644 index 0000000..9a1b14f --- /dev/null +++ b/libdwfl/dwfl_module_report_build_id.c @@ -0,0 +1,101 @@ +/* Report build ID information for a module. + Copyright (C) 2007, 2008 Red Hat, Inc. + This file is part of Red Hat elfutils. + + Red Hat elfutils is free software; you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by the + Free Software Foundation; version 2 of the License. + + Red Hat 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 a copy of the GNU General Public License along + with Red Hat elfutils; if not, write to the Free Software Foundation, + Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA. + + In addition, as a special exception, Red Hat, Inc. gives You the + additional right to link the code of Red Hat elfutils with code licensed + under any Open Source Initiative certified open source license + (http://www.opensource.org/licenses/index.php) which requires the + distribution of source code with any binary distribution and to + distribute linked combinations of the two. Non-GPL Code permitted under + this exception must only link to the code of Red Hat elfutils through + those well defined interfaces identified in the file named EXCEPTION + found in the source code files (the "Approved Interfaces"). The files + of Non-GPL Code may instantiate templates or use macros or inline + functions from the Approved Interfaces without causing the resulting + work to be covered by the GNU General Public License. Only Red Hat, + Inc. may make changes or additions to the list of Approved Interfaces. + Red Hat's grant of this exception is conditioned upon your not adding + any new exceptions. If you wish to add a new Approved Interface or + exception, please contact Red Hat. You must obey the GNU General Public + License in all respects for all of the Red Hat elfutils code and other + code used in conjunction with Red Hat elfutils except the Non-GPL Code + covered by this exception. If you modify this file, you may extend this + exception to your version of the file, but you are not obligated to do + so. If you do not wish to provide this exception without modification, + you must delete this exception statement from your version and license + this file solely under the GPL without exception. + + Red Hat elfutils is an included package of the Open Invention Network. + An included package of the Open Invention Network is a package for which + Open Invention Network licensees cross-license their patents. No patent + license is granted, either expressly or impliedly, by designation as an + included package. Should you wish to participate in the Open Invention + Network licensing program, please visit www.openinventionnetwork.com + <http://www.openinventionnetwork.com>. */ + +#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) |