31 struct src_sec {  struct
67 	struct src_sec *secs;  argument
174 static int linker_sanity_check_elf_symtab(struct src_obj *obj, struct src_sec *sec);
175 static int linker_sanity_check_elf_relos(struct src_obj *obj, struct src_sec *sec);
605 static bool is_ignored_sec(struct src_sec *sec)  in is_ignored_sec()
642 static struct src_sec *add_src_sec(struct src_obj *obj, const char *sec_name)  in add_src_sec()
644 	struct src_sec *secs = obj->secs, *sec;  in add_src_sec()
672 	struct src_sec *sec;  in linker_load_obj_file()
831 	struct src_sec *sec;  in linker_sanity_check_elf()
911 static int linker_sanity_check_elf_symtab(struct src_obj *obj, struct src_sec *sec)  in linker_sanity_check_elf_symtab()
913 	struct src_sec *link_sec;  in linker_sanity_check_elf_symtab()
985 static int linker_sanity_check_elf_relos(struct src_obj *obj, struct src_sec *sec)  in linker_sanity_check_elf_relos()
987 	struct src_sec *link_sec, *sym_sec;  in linker_sanity_check_elf_relos()
1140 static int init_sec(struct bpf_linker *linker, struct dst_sec *dst_sec, struct src_sec *src_sec)  in init_sec()  argument
1149 	dst_sec->ephemeral = src_sec->ephemeral;  in init_sec()
1152 	if (src_sec->ephemeral)  in init_sec()
1170 	name_off = strset__add_str(linker->strtab_strs, src_sec->sec_name);  in init_sec()
1175 	shdr->sh_type = src_sec->shdr->sh_type;  in init_sec()
1176 	shdr->sh_flags = src_sec->shdr->sh_flags;  in init_sec()
1184 	shdr->sh_addralign = src_sec->shdr->sh_addralign;  in init_sec()
1185 	shdr->sh_entsize = src_sec->shdr->sh_entsize;  in init_sec()
1187 	data->d_type = src_sec->data->d_type;  in init_sec()
1190 	data->d_align = src_sec->data->d_align;  in init_sec()
1211 static bool secs_match(struct dst_sec *dst, struct src_sec *src)  in secs_match()
1232 static bool sec_content_is_same(struct dst_sec *dst_sec, struct src_sec *src_sec)  in sec_content_is_same()  argument
1234 	if (dst_sec->sec_sz != src_sec->shdr->sh_size)  in sec_content_is_same()
1236 	if (memcmp(dst_sec->raw_data, src_sec->data->d_buf, dst_sec->sec_sz) != 0)  in sec_content_is_same()
1259 static int extend_sec(struct bpf_linker *linker, struct dst_sec *dst, struct src_sec *src)  in extend_sec()
1336 static bool is_data_sec(struct src_sec *sec)  in is_data_sec()
1346 static bool is_relo_sec(struct src_sec *sec)  in is_relo_sec()
1358 		struct src_sec *src_sec;  in linker_append_sec_data()  local
1361 		src_sec = &obj->secs[i];  in linker_append_sec_data()
1362 		if (!is_data_sec(src_sec))  in linker_append_sec_data()
1365 		dst_sec = find_dst_sec_by_name(linker, src_sec->sec_name);  in linker_append_sec_data()
1367 			dst_sec = add_dst_sec(linker, src_sec->sec_name);  in linker_append_sec_data()
1370 			err = init_sec(linker, dst_sec, src_sec);  in linker_append_sec_data()
1372 				pr_warn("failed to init section '%s'\n", src_sec->sec_name);  in linker_append_sec_data()
1376 			if (!secs_match(dst_sec, src_sec)) {  in linker_append_sec_data()
1377 				pr_warn("ELF sections %s are incompatible\n", src_sec->sec_name);  in linker_append_sec_data()
1382 			if (strcmp(src_sec->sec_name, "license") == 0  in linker_append_sec_data()
1383 			    || strcmp(src_sec->sec_name, "version") == 0) {  in linker_append_sec_data()
1384 				if (!sec_content_is_same(dst_sec, src_sec)) {  in linker_append_sec_data()
1385 					pr_warn("non-identical contents of section '%s' are not supported\n", src_sec->sec_name);  in linker_append_sec_data()
1388 				src_sec->skipped = true;  in linker_append_sec_data()
1389 				src_sec->dst_id = dst_sec->id;  in linker_append_sec_data()
1395 		src_sec->dst_id = dst_sec->id;  in linker_append_sec_data()
1397 		err = extend_sec(linker, dst_sec, src_sec);  in linker_append_sec_data()
1407 	struct src_sec *symtab = &obj->secs[obj->symtab_sec_idx];  in linker_append_elf_syms()
1911 static struct src_sec *find_src_sec_by_name(struct src_obj *obj, const char *sec_name)  in find_src_sec_by_name()
1913 	struct src_sec *sec;  in find_src_sec_by_name()
1998 	struct src_sec *src_sec = NULL;  in linker_append_elf_sym()  local
2018 		src_sec = &obj->secs[sym->st_shndx];  in linker_append_elf_sym()
2019 		if (src_sec->skipped)  in linker_append_elf_sym()
2021 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_elf_sym()
2029 		if (strcmp(src_sec->sec_name, JUMPTABLES_SEC) == 0)  in linker_append_elf_sym()
2055 			src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_elf_sym()
2056 			if (!src_sec) {  in linker_append_elf_sym()
2060 			dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_elf_sym()
2132 		dst_sym->st_value = src_sec->dst_off + sym->st_value;  in linker_append_elf_sym()
2163 	dst_sym->st_value = (src_sec ? src_sec->dst_off : 0) + sym->st_value;  in linker_append_elf_sym()
2198 	struct src_sec *src_symtab = &obj->secs[obj->symtab_sec_idx];  in linker_append_elf_relos()
2202 		struct src_sec *src_sec, *src_linked_sec;  in linker_append_elf_relos()  local
2207 		src_sec = &obj->secs[i];  in linker_append_elf_relos()
2208 		if (!is_relo_sec(src_sec))  in linker_append_elf_relos()
2212 		src_linked_sec = &obj->secs[src_sec->shdr->sh_info];  in linker_append_elf_relos()
2216 		dst_sec = find_dst_sec_by_name(linker, src_sec->sec_name);  in linker_append_elf_relos()
2218 			dst_sec = add_dst_sec(linker, src_sec->sec_name);  in linker_append_elf_relos()
2221 			err = init_sec(linker, dst_sec, src_sec);  in linker_append_elf_relos()
2223 				pr_warn("failed to init section '%s'\n", src_sec->sec_name);  in linker_append_elf_relos()
2226 		} else if (!secs_match(dst_sec, src_sec)) {  in linker_append_elf_relos()
2227 			pr_warn("sections %s are not compatible\n", src_sec->sec_name);  in linker_append_elf_relos()
2238 		src_sec->dst_id = dst_sec->id;  in linker_append_elf_relos()
2239 		err = extend_sec(linker, dst_sec, src_sec);  in linker_append_elf_relos()
2243 		src_rel = src_sec->data->d_buf;  in linker_append_elf_relos()
2244 		dst_rel = dst_sec->raw_data + src_sec->dst_off;  in linker_append_elf_relos()
2245 		n = src_sec->shdr->sh_size / src_sec->shdr->sh_entsize;  in linker_append_elf_relos()
2259 				struct src_sec *sec = &obj->secs[src_sym->st_shndx];  in linker_append_elf_relos()
2292 	struct src_sec *symtab = &obj->secs[obj->symtab_sec_idx];  in find_sym_by_name()
2320 	struct src_sec *sec;  in linker_fixup_btf()
2525 		struct src_sec *src_sec;  in linker_append_btf()  local
2530 		src_sec = &obj->secs[i];  in linker_append_btf()
2531 		if (!src_sec->sec_type_id || src_sec->skipped)  in linker_append_btf()
2533 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf()
2545 		t = btf__type_by_id(obj->btf, src_sec->sec_type_id);  in linker_append_btf()
2603 			dst_var->offset = src_sec->dst_off + src_var->offset;  in linker_append_btf()
2634 	struct src_sec *src_sec;  in linker_append_btf_ext()  local
2646 		src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_btf_ext()
2647 		if (!src_sec) {  in linker_append_btf_ext()
2651 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf_ext()
2665 			dst_rec->insn_off += src_sec->dst_off;  in linker_append_btf_ext()
2675 		src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_btf_ext()
2676 		if (!src_sec) {  in linker_append_btf_ext()
2680 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf_ext()
2694 			dst_rec->insn_off += src_sec->dst_off;  in linker_append_btf_ext()
2717 		src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_btf_ext()
2718 		if (!src_sec) {  in linker_append_btf_ext()
2722 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf_ext()
2736 			dst_rec->insn_off += src_sec->dst_off;  in linker_append_btf_ext()