270 static int readElfHeader(ifstream& elfFile, Elf64_Ehdr* eh) {  in readElfHeader()  argument
271     elfFile.seekg(0);  in readElfHeader()
272     if (elfFile.fail()) return -1;  in readElfHeader()
274     if (!elfFile.read((char*)eh, sizeof(*eh))) return -1;  in readElfHeader()
280 static int readSectionHeadersAll(ifstream& elfFile, vector<Elf64_Shdr>& shTable) {  in readSectionHeadersAll()  argument
284     ret = readElfHeader(elfFile, &eh);  in readSectionHeadersAll()
287     elfFile.seekg(eh.e_shoff);  in readSectionHeadersAll()
288     if (elfFile.fail()) return -1;  in readSectionHeadersAll()
293     if (!elfFile.read((char*)shTable.data(), (eh.e_shnum * eh.e_shentsize))) return -ENOMEM;  in readSectionHeadersAll()
299 static int readSectionByIdx(ifstream& elfFile, int id, vector<char>& sec) {  in readSectionByIdx()  argument
301     int ret = readSectionHeadersAll(elfFile, shTable);  in readSectionByIdx()
304     elfFile.seekg(shTable[id].sh_offset);  in readSectionByIdx()
305     if (elfFile.fail()) return -1;  in readSectionByIdx()
308     if (!elfFile.read(sec.data(), shTable[id].sh_size)) return -1;  in readSectionByIdx()
314 static int readSectionHeaderStrtab(ifstream& elfFile, vector<char>& strtab) {  in readSectionHeaderStrtab()  argument
316     int ret = readElfHeader(elfFile, &eh);  in readSectionHeaderStrtab()
319     ret = readSectionByIdx(elfFile, eh.e_shstrndx, strtab);  in readSectionHeaderStrtab()
326 static int getSymName(ifstream& elfFile, int nameOff, string& name) {  in getSymName()  argument
330     ret = readSectionHeaderStrtab(elfFile, secStrTab);  in getSymName()
340 static int readSectionByName(const char* name, ifstream& elfFile, vector<char>& data) {  in readSectionByName()  argument
345     ret = readSectionHeadersAll(elfFile, shTable);  in readSectionByName()
348     ret = readSectionHeaderStrtab(elfFile, secStrTab);  in readSectionByName()
359             elfFile.seekg(shTable[i].sh_offset);  in readSectionByName()
360             if (elfFile.fail()) return -1;  in readSectionByName()
362             if (!elfFile.read((char*)dataTmp.data(), shTable[i].sh_size)) return -1;  in readSectionByName()
371 unsigned int readSectionUint(const char* name, ifstream& elfFile) {  in readSectionUint()  argument
373     int ret = readSectionByName(name, elfFile, theBytes);  in readSectionUint()
394 static int readSectionByType(ifstream& elfFile, int type, vector<char>& data) {  in readSectionByType()  argument
398     ret = readSectionHeadersAll(elfFile, shTable);  in readSectionByType()
407         elfFile.seekg(shTable[i].sh_offset);  in readSectionByType()
408         if (elfFile.fail()) return -1;  in readSectionByType()
410         if (!elfFile.read((char*)dataTmp.data(), shTable[i].sh_size)) return -1;  in readSectionByType()
422 static int readSymTab(ifstream& elfFile, int sort, vector<Elf64_Sym>& data) {  in readSymTab()  argument
427     ret = readSectionByType(elfFile, SHT_SYMTAB, secData);  in readSymTab()
445 static int readProgDefs(ifstream& elfFile, vector<struct bpf_prog_def>& pd) {  in readProgDefs()  argument
447     int ret = readSectionByName("progs", elfFile, pdData);  in readProgDefs()
467 static int getSectionSymNames(ifstream& elfFile, const string& sectionName, vector<string>& names,  in getSectionSymNames()  argument
474     ret = readSymTab(elfFile, 1 /* sort */, symtab);  in getSectionSymNames()
478     ret = readSectionHeadersAll(elfFile, shTable);  in getSectionSymNames()
483         ret = getSymName(elfFile, shTable[i].sh_name, name);  in getSectionSymNames()
503             ret = getSymName(elfFile, symtab[i].st_name, s);  in getSectionSymNames()
513 static int readCodeSections(ifstream& elfFile, vector<codeSection>& cs) {  in readCodeSections()  argument
517     ret = readSectionHeadersAll(elfFile, shTable);  in readCodeSections()
522     ret = readProgDefs(elfFile, pd);  in readCodeSections()
525     ret = getSectionSymNames(elfFile, "progs", progDefNames);  in readCodeSections()
533         ret = getSymName(elfFile, shTable[i].sh_name, name);  in readCodeSections()
552         ret = readSectionByIdx(elfFile, i, cs_temp.data);  in readCodeSections()
557         ret = getSectionSymNames(elfFile, oldName, csSymNames, STT_FUNC);  in readCodeSections()
568             ret = getSymName(elfFile, shTable[i + 1].sh_name, name);  in readCodeSections()
572                 ret = readSectionByIdx(elfFile, i + 1, cs_temp.rel_data);  in readCodeSections()
586 static int getSymNameByIdx(ifstream& elfFile, int index, string& name) {  in getSymNameByIdx()  argument
590     ret = readSymTab(elfFile, 0 /* !sort */, symtab);  in getSymNameByIdx()
595     return getSymName(elfFile, symtab[index].st_name, name);  in getSymNameByIdx()
654 static int setBtfDatasecSize(ifstream &elfFile, struct btf *btf,  in setBtfDatasecSize()  argument
663     int ret = readSectionByName(name, elfFile, data);  in setBtfDatasecSize()
672 static int getSymOffsetByName(ifstream &elfFile, const char *name, int *off) {  in getSymOffsetByName()  argument
674     int ret = readSymTab(elfFile, 1 /* sort */, symtab);  in getSymOffsetByName()
678         ret = getSymName(elfFile, symtab[i].st_name, s);  in getSymOffsetByName()
688 static int setBtfVarOffset(ifstream &elfFile, struct btf *btf,  in setBtfVarOffset()  argument
716         int ret = getSymOffsetByName(elfFile, varName, &off);  in setBtfVarOffset()
727 static int loadBtf(ifstream &elfFile, struct btf *btf) {  in loadBtf()  argument
732         ret = setBtfDatasecSize(elfFile, btf, bt);  in loadBtf()
734         ret = setBtfVarOffset(elfFile, btf, bt);  in loadBtf()
829 static int createMaps(const char* elfPath, ifstream& elfFile, vector<unique_fd>& mapFds,  in createMaps()  argument
837     ret = readSectionByName("maps", elfFile, mdData);  in createMaps()
856     ret = getSectionSymNames(elfFile, "maps", mapNames);  in createMaps()
865         ret = readSectionByName(".BTF", elfFile, btfData);  in createMaps()
876         ret = loadBtf(elfFile, btf);  in createMaps()
1118 static void applyMapRelo(ifstream& elfFile, vector<unique_fd> &mapFds, vector<codeSection>& cs) {  in applyMapRelo()  argument
1121     int ret = getSectionSymNames(elfFile, "maps", mapNames);  in applyMapRelo()
1132             ret = getSymNameByIdx(elfFile, symIndex, symName);  in applyMapRelo()
1360     ifstream elfFile(elfPath, ios::in | ios::binary);  in loadProg()  local
1361     if (!elfFile.is_open()) return -1;  in loadProg()
1363     ret = readSectionByName("license", elfFile, license);  in loadProg()
1372     unsigned int bpfLoaderMinVer = readSectionUint("bpfloader_min_ver", elfFile);  in loadProg()
1373     unsigned int bpfLoaderMaxVer = readSectionUint("bpfloader_max_ver", elfFile);  in loadProg()
1392     ret = createMaps(elfPath, elfFile, mapFds, prefix, bpfloader_ver);  in loadProg()
1401     ret = readCodeSections(elfFile, cs);  in loadProg()
1411     applyMapRelo(elfFile, mapFds, cs);  in loadProg()