27 struct src_sec {  struct
63 	struct src_sec *secs;  argument
165 static int linker_sanity_check_elf_symtab(struct src_obj *obj, struct src_sec *sec);
166 static int linker_sanity_check_elf_relos(struct src_obj *obj, struct src_sec *sec);
479 static bool is_ignored_sec(struct src_sec *sec)  in is_ignored_sec()
516 static struct src_sec *add_src_sec(struct src_obj *obj, const char *sec_name)  in add_src_sec()
518 	struct src_sec *secs = obj->secs, *sec;  in add_src_sec()
554 	struct src_sec *sec;  in linker_load_obj_file()
707 	struct src_sec *sec;  in linker_sanity_check_elf()
768 static int linker_sanity_check_elf_symtab(struct src_obj *obj, struct src_sec *sec)  in linker_sanity_check_elf_symtab()
770 	struct src_sec *link_sec;  in linker_sanity_check_elf_symtab()
842 static int linker_sanity_check_elf_relos(struct src_obj *obj, struct src_sec *sec)  in linker_sanity_check_elf_relos()
844 	struct src_sec *link_sec, *sym_sec;  in linker_sanity_check_elf_relos()
983 static int init_sec(struct bpf_linker *linker, struct dst_sec *dst_sec, struct src_sec *src_sec)  in init_sec()  argument
992 	dst_sec->ephemeral = src_sec->ephemeral;  in init_sec()
995 	if (src_sec->ephemeral)  in init_sec()
1013 	name_off = strset__add_str(linker->strtab_strs, src_sec->sec_name);  in init_sec()
1018 	shdr->sh_type = src_sec->shdr->sh_type;  in init_sec()
1019 	shdr->sh_flags = src_sec->shdr->sh_flags;  in init_sec()
1027 	shdr->sh_addralign = src_sec->shdr->sh_addralign;  in init_sec()
1028 	shdr->sh_entsize = src_sec->shdr->sh_entsize;  in init_sec()
1030 	data->d_type = src_sec->data->d_type;  in init_sec()
1033 	data->d_align = src_sec->data->d_align;  in init_sec()
1054 static bool secs_match(struct dst_sec *dst, struct src_sec *src)  in secs_match()
1075 static bool sec_content_is_same(struct dst_sec *dst_sec, struct src_sec *src_sec)  in sec_content_is_same()  argument
1077 	if (dst_sec->sec_sz != src_sec->shdr->sh_size)  in sec_content_is_same()
1079 	if (memcmp(dst_sec->raw_data, src_sec->data->d_buf, dst_sec->sec_sz) != 0)  in sec_content_is_same()
1084 static int extend_sec(struct bpf_linker *linker, struct dst_sec *dst, struct src_sec *src)  in extend_sec()
1145 static bool is_data_sec(struct src_sec *sec)  in is_data_sec()
1155 static bool is_relo_sec(struct src_sec *sec)  in is_relo_sec()
1167 		struct src_sec *src_sec;  in linker_append_sec_data()  local
1170 		src_sec = &obj->secs[i];  in linker_append_sec_data()
1171 		if (!is_data_sec(src_sec))  in linker_append_sec_data()
1174 		dst_sec = find_dst_sec_by_name(linker, src_sec->sec_name);  in linker_append_sec_data()
1176 			dst_sec = add_dst_sec(linker, src_sec->sec_name);  in linker_append_sec_data()
1179 			err = init_sec(linker, dst_sec, src_sec);  in linker_append_sec_data()
1181 				pr_warn("failed to init section '%s'\n", src_sec->sec_name);  in linker_append_sec_data()
1185 			if (!secs_match(dst_sec, src_sec)) {  in linker_append_sec_data()
1186 				pr_warn("ELF sections %s are incompatible\n", src_sec->sec_name);  in linker_append_sec_data()
1191 			if (strcmp(src_sec->sec_name, "license") == 0  in linker_append_sec_data()
1192 			    || strcmp(src_sec->sec_name, "version") == 0) {  in linker_append_sec_data()
1193 				if (!sec_content_is_same(dst_sec, src_sec)) {  in linker_append_sec_data()
1194 					pr_warn("non-identical contents of section '%s' are not supported\n", src_sec->sec_name);  in linker_append_sec_data()
1197 				src_sec->skipped = true;  in linker_append_sec_data()
1198 				src_sec->dst_id = dst_sec->id;  in linker_append_sec_data()
1204 		src_sec->dst_id = dst_sec->id;  in linker_append_sec_data()
1206 		err = extend_sec(linker, dst_sec, src_sec);  in linker_append_sec_data()
1216 	struct src_sec *symtab = &obj->secs[obj->symtab_sec_idx];  in linker_append_elf_syms()
1718 static struct src_sec *find_src_sec_by_name(struct src_obj *obj, const char *sec_name)  in find_src_sec_by_name()
1720 	struct src_sec *sec;  in find_src_sec_by_name()
1805 	struct src_sec *src_sec = NULL;  in linker_append_elf_sym()  local
1825 		src_sec = &obj->secs[sym->st_shndx];  in linker_append_elf_sym()
1826 		if (src_sec->skipped)  in linker_append_elf_sym()
1828 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_elf_sym()
1859 			src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_elf_sym()
1860 			if (!src_sec) {  in linker_append_elf_sym()
1864 			dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_elf_sym()
1936 		dst_sym->st_value = src_sec->dst_off + sym->st_value;  in linker_append_elf_sym()
1967 	dst_sym->st_value = (src_sec ? src_sec->dst_off : 0) + sym->st_value;  in linker_append_elf_sym()
2002 	struct src_sec *src_symtab = &obj->secs[obj->symtab_sec_idx];  in linker_append_elf_relos()
2007 		struct src_sec *src_sec, *src_linked_sec;  in linker_append_elf_relos()  local
2012 		src_sec = &obj->secs[i];  in linker_append_elf_relos()
2013 		if (!is_relo_sec(src_sec))  in linker_append_elf_relos()
2017 		src_linked_sec = &obj->secs[src_sec->shdr->sh_info];  in linker_append_elf_relos()
2021 		dst_sec = find_dst_sec_by_name(linker, src_sec->sec_name);  in linker_append_elf_relos()
2023 			dst_sec = add_dst_sec(linker, src_sec->sec_name);  in linker_append_elf_relos()
2026 			err = init_sec(linker, dst_sec, src_sec);  in linker_append_elf_relos()
2028 				pr_warn("failed to init section '%s'\n", src_sec->sec_name);  in linker_append_elf_relos()
2031 		} else if (!secs_match(dst_sec, src_sec)) {  in linker_append_elf_relos()
2032 			pr_warn("sections %s are not compatible\n", src_sec->sec_name);  in linker_append_elf_relos()
2043 		src_sec->dst_id = dst_sec->id;  in linker_append_elf_relos()
2044 		err = extend_sec(linker, dst_sec, src_sec);  in linker_append_elf_relos()
2048 		src_rel = src_sec->data->d_buf;  in linker_append_elf_relos()
2049 		dst_rel = dst_sec->raw_data + src_sec->dst_off;  in linker_append_elf_relos()
2050 		n = src_sec->shdr->sh_size / src_sec->shdr->sh_entsize;  in linker_append_elf_relos()
2067 				struct src_sec *sec = &obj->secs[src_sym->st_shndx];  in linker_append_elf_relos()
2100 	struct src_sec *symtab = &obj->secs[obj->symtab_sec_idx];  in find_sym_by_name()
2128 	struct src_sec *sec;  in linker_fixup_btf()
2326 		struct src_sec *src_sec;  in linker_append_btf()  local
2331 		src_sec = &obj->secs[i];  in linker_append_btf()
2332 		if (!src_sec->sec_type_id || src_sec->skipped)  in linker_append_btf()
2334 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf()
2346 		t = btf__type_by_id(obj->btf, src_sec->sec_type_id);  in linker_append_btf()
2400 			dst_var->offset = src_sec->dst_off + src_var->offset;  in linker_append_btf()
2431 	struct src_sec *src_sec;  in linker_append_btf_ext()  local
2443 		src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_btf_ext()
2444 		if (!src_sec) {  in linker_append_btf_ext()
2448 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf_ext()
2462 			dst_rec->insn_off += src_sec->dst_off;  in linker_append_btf_ext()
2472 		src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_btf_ext()
2473 		if (!src_sec) {  in linker_append_btf_ext()
2477 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf_ext()
2491 			dst_rec->insn_off += src_sec->dst_off;  in linker_append_btf_ext()
2514 		src_sec = find_src_sec_by_name(obj, sec_name);  in linker_append_btf_ext()
2515 		if (!src_sec) {  in linker_append_btf_ext()
2519 		dst_sec = &linker->secs[src_sec->dst_id];  in linker_append_btf_ext()
2533 			dst_rec->insn_off += src_sec->dst_off;  in linker_append_btf_ext()