120 static int readElfHeader(ifstream &elfFile, Elf64_Ehdr *eh) {  in readElfHeader()  argument
121   elfFile.seekg(0);  in readElfHeader()
122   if (elfFile.fail())  in readElfHeader()
125   if (!elfFile.read((char *)eh, sizeof(*eh)))  in readElfHeader()
132 static int readSectionHeadersAll(ifstream &elfFile,  in readSectionHeadersAll()  argument
137   ret = readElfHeader(elfFile, &eh);  in readSectionHeadersAll()
141   elfFile.seekg(eh.e_shoff);  in readSectionHeadersAll()
142   if (elfFile.fail())  in readSectionHeadersAll()
148   if (!elfFile.read((char *)shTable.data(), (eh.e_shnum * eh.e_shentsize)))  in readSectionHeadersAll()
155 static int readSectionByIdx(ifstream &elfFile, int id, vector<char> &sec) {  in readSectionByIdx()  argument
157   int ret = readSectionHeadersAll(elfFile, shTable);  in readSectionByIdx()
161   elfFile.seekg(shTable[id].sh_offset);  in readSectionByIdx()
162   if (elfFile.fail())  in readSectionByIdx()
166   if (!elfFile.read(sec.data(), shTable[id].sh_size))  in readSectionByIdx()
173 static int readSectionHeaderStrtab(ifstream &elfFile, vector<char> &strtab) {  in readSectionHeaderStrtab()  argument
175   int ret = readElfHeader(elfFile, &eh);  in readSectionHeaderStrtab()
179   ret = readSectionByIdx(elfFile, eh.e_shstrndx, strtab);  in readSectionHeaderStrtab()
187 static int getSymName(ifstream &elfFile, int nameOff, string &name) {  in getSymName()  argument
191   ret = readSectionHeaderStrtab(elfFile, secStrTab);  in getSymName()
203 static int readSectionByName(const char *name, ifstream &elfFile,  in readSectionByName()  argument
209   ret = readSectionHeadersAll(elfFile, shTable);  in readSectionByName()
213   ret = readSectionHeaderStrtab(elfFile, secStrTab);  in readSectionByName()
226       elfFile.seekg(shTable[i].sh_offset);  in readSectionByName()
227       if (elfFile.fail())  in readSectionByName()
230       if (!elfFile.read((char *)dataTmp.data(), shTable[i].sh_size))  in readSectionByName()
240 unsigned int readSectionUint(const char *name, ifstream &elfFile,  in readSectionUint()  argument
243   int ret = readSectionByName(name, elfFile, theBytes);  in readSectionUint()
267 static int readSectionByType(ifstream &elfFile, int type, vector<char> &data) {  in readSectionByType()  argument
271   ret = readSectionHeadersAll(elfFile, shTable);  in readSectionByType()
282     elfFile.seekg(shTable[i].sh_offset);  in readSectionByType()
283     if (elfFile.fail())  in readSectionByType()
286     if (!elfFile.read((char *)dataTmp.data(), shTable[i].sh_size))  in readSectionByType()
299 static int readSymTab(ifstream &elfFile, int sort, vector<Elf64_Sym> &data) {  in readSymTab()  argument
304   ret = readSectionByType(elfFile, SHT_SYMTAB, secData);  in readSymTab()
344 static int readProgDefs(ifstream &elfFile, vector<struct bpf_prog_def> &pd) {  in readProgDefs()  argument
346   int ret = readSectionByName("progs", elfFile, pdData);  in readProgDefs()
362 static int getSectionSymNames(ifstream &elfFile, const string &sectionName,  in getSectionSymNames()  argument
370   ret = readSymTab(elfFile, 1 /* sort */, symtab);  in getSectionSymNames()
375   ret = readSectionHeadersAll(elfFile, shTable);  in getSectionSymNames()
381     ret = getSymName(elfFile, shTable[i].sh_name, name);  in getSectionSymNames()
403       ret = getSymName(elfFile, symtab[i].st_name, s);  in getSectionSymNames()
430 static int readCodeSections(ifstream &elfFile, vector<codeSection> &cs,  in readCodeSections()  argument
435   ret = readSectionHeadersAll(elfFile, shTable);  in readCodeSections()
441   ret = readProgDefs(elfFile, pd);  in readCodeSections()
445   ret = getSectionSymNames(elfFile, "progs", progDefNames);  in readCodeSections()
454     ret = getSymName(elfFile, shTable[i].sh_name, name);  in readCodeSections()
477     ret = readSectionByIdx(elfFile, i, cs_temp.data);  in readCodeSections()
483     ret = getSectionSymNames(elfFile, oldName, csSymNames, STT_FUNC);  in readCodeSections()
495       ret = getSymName(elfFile, shTable[i + 1].sh_name, name);  in readCodeSections()
500         ret = readSectionByIdx(elfFile, i + 1, cs_temp.rel_data);  in readCodeSections()
515 static int getSymNameByIdx(ifstream &elfFile, int index, string &name) {  in getSymNameByIdx()  argument
519   ret = readSymTab(elfFile, 0 /* !sort */, symtab);  in getSymNameByIdx()
526   return getSymName(elfFile, symtab[index].st_name, name);  in getSymNameByIdx()
579 static int createMaps(const char *elfPath, ifstream &elfFile,  in createMaps()  argument
587   ret = readSectionByName("maps", elfFile, mdData);  in createMaps()
602   ret = getSectionSymNames(elfFile, "maps", mapNames);  in createMaps()
749 static void applyMapRelo(ifstream &elfFile, vector<unique_fd> &mapFds,  in applyMapRelo()  argument
753   int ret = getSectionSymNames(elfFile, "maps", mapNames);  in applyMapRelo()
765       ret = getSymNameByIdx(elfFile, symIndex, symName);  in applyMapRelo()
918   ifstream elfFile(elfPath, ios::in | ios::binary);  in loadProg()  local
919   if (!elfFile.is_open())  in loadProg()
922   ret = readSectionByName("critical", elfFile, critical);  in loadProg()
925   ret = readSectionByName("license", elfFile, license);  in loadProg()
936   ret = readCodeSections(elfFile, cs, location.allowedProgTypes,  in loadProg()
943   ret = createMaps(elfPath, elfFile, mapFds, location.prefix);  in loadProg()
952   applyMapRelo(elfFile, mapFds, cs);  in loadProg()