Get symbols and offset using BFD from unlinked / linked kernel module

gistfile1.c

        if ( 1 ) {
            bfd *abfd;
            char * target;
            char **matching;
            asection *asection_p;

            fprintf(stderr, "section not found bfd time (%s) (0x%lx)\n",path_.c_str(),load_address);

            bfd_init();
            abfd = bfd_openr(path_.c_str(),target);

            if (bfd_check_format_matches (abfd, bfd_object, &matching)) {
                fprintf(stderr, "found object section %d\n",bfd_count_sections(abfd));
                fprintf(stderr, "obj architecture = %d\n",bfd_get_arch_size(abfd));

                unsigned int opb = bfd_octets_per_byte (abfd);
                asection_p = bfd_get_section_by_name(abfd, ".text");
                if (asection_p != NULL) {
                    fprintf(stderr, ".TEXT FOUND!\n");
                    fprintf(stderr, "section (%s) size(%lx)\n",bfd_get_section_name (abfd, asection_p),(unsigned long) bfd_section_size (abfd, asection_p) / opb);
                    fprintf(stderr, "Entry point is at address 0x%lx\n",bfd_ge§t_start_address(abfd));

                   if (bfd_section_lma (abfd,asection_p) != bfd_section_vma (abfd,asection_p)) {
                        fprintf(stderr,"loadable section %s: lma = 0x%08x (vma = 0x%08x)  size = 0x%08x.\n", bfd_section_name (abfd,asection_p), (unsigned int) bfd_section_lma (abfd,asection_p), (unsigned int) bfd_section_vma (abfd,asection_p), (unsigned int) bfd_section_size (abfd,asection_p));
                    } else {
                        fprintf(stderr,"loadable section %s: addr = 0x%08x  size = 0x%08x.\n", bfd_section_name (abfd,asection_p), (unsigned int) bfd_section_lma (abfd,asection_p), (unsigned int) bfd_section_size (abfd,asection_p));
                    }

                    /*
                     *  LOOK FOR SYMBOLS FROM UNLINKED / LINKED MODULE !
                     */
                    unsigned int storage_needed;
                    asymbol **symbol_table;
                    unsigned int number_of_symbols;
                    unsigned int i;
                    symbol_info syminfo;

                    storage_needed = bfd_get_symtab_upper_bound(abfd);

                    if (storage_needed == 0) {
                       return found;
                    }
                    symbol_table = (asymbol **) malloc(storage_needed);

                    number_of_symbols =
                       bfd_canonicalize_symtab(abfd, symbol_table);

                    for (i = 0; i < number_of_symbols; i++) {
                       if ( !(symbol_table[i]->flags & ( BSF_SECTION_SYM | BSF_FILE | BSF_OBJECT )) &&
                            symbol_table[i]->flags & ( BSF_LOCAL | /*BSF_COMMON | BSF_UNDEFINED |*/ BSF_GLOBAL) /*BSF_LOCAL*/)
                        {
                            bfd_symbol_info(symbol_table[i], &syminfo);
                            fprintf(stderr, "symbol name (%s) (0x%lx) flags(0x%x) \n",symbol_table[i]->name, (syminfo.value), symbol_table[i]->flags);
                       }
                    }

                }

            }
            bfd_close (abfd);
        }