Lines Matching +full:riscv +full:- +full:v +full:- +full:spec
1 // SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
6 * Copyright (C) 2013-2015 Alexei Starovoitov <ast@kernel.org>
67 #pragma GCC diagnostic ignored "-Wformat-nonliteral"
260 if (err != -EPERM || geteuid() != 0) in pr_perm_msg()
277 pr_warn("permission error while running as root; try raising 'ulimit -l'? current value: %s\n", in pr_perm_msg()
293 fd = -1; \
304 /* as of v1.0 libbpf_set_strict_mode() is a no-op */ in libbpf_set_strict_mode()
322 return "v" _S(LIBBPF_MAJOR_VERSION) "." _S(LIBBPF_MINOR_VERSION); in libbpf_version_string()
350 /* stored as sec_def->cookie for all libbpf-supported SEC()s */
369 /* BPF program support non-linear XDP buffer */
407 * program. For the entry-point (main) BPF program, this is always
408 * zero. For a sub-program, this gets reset before each of main BPF
410 * whether sub-program was already appended to the main program, and
422 * entry-point BPF programs this includes the size of main program
423 * itself plus all the used sub-programs, appended at the end
472 * kern_vdata-size == sizeof(struct bpf_struct_ops_tcp_congestion_ops)
578 /* BTF fd index to be patched in for insn->off, this is
579 * 0 for vmlinux BTF, index in obj->fd_array for module
664 /* Path to the custom BTF to be used for BPF CO-RE relocations as an
668 /* vmlinux BTF override for CO-RE relocations */
705 zclose(prog->fd); in bpf_program__unload()
707 zfree(&prog->func_info); in bpf_program__unload()
708 zfree(&prog->line_info); in bpf_program__unload()
717 zfree(&prog->name); in bpf_program__exit()
718 zfree(&prog->sec_name); in bpf_program__exit()
719 zfree(&prog->insns); in bpf_program__exit()
720 zfree(&prog->reloc_desc); in bpf_program__exit()
722 prog->nr_reloc = 0; in bpf_program__exit()
723 prog->insns_cnt = 0; in bpf_program__exit()
724 prog->sec_idx = -1; in bpf_program__exit()
729 return BPF_CLASS(insn->code) == BPF_JMP && in insn_is_subprog_call()
730 BPF_OP(insn->code) == BPF_CALL && in insn_is_subprog_call()
731 BPF_SRC(insn->code) == BPF_K && in insn_is_subprog_call()
732 insn->src_reg == BPF_PSEUDO_CALL && in insn_is_subprog_call()
733 insn->dst_reg == 0 && in insn_is_subprog_call()
734 insn->off == 0; in insn_is_subprog_call()
739 return insn->code == (BPF_JMP | BPF_CALL); in is_call_insn()
744 return is_ldimm64_insn(insn) && insn->src_reg == BPF_PSEUDO_FUNC; in insn_is_pseudo_func()
755 return -EINVAL; in bpf_object__init_prog()
759 prog->obj = obj; in bpf_object__init_prog()
761 prog->sec_idx = sec_idx; in bpf_object__init_prog()
762 prog->sec_insn_off = sec_off / BPF_INSN_SZ; in bpf_object__init_prog()
763 prog->sec_insn_cnt = insn_data_sz / BPF_INSN_SZ; in bpf_object__init_prog()
765 prog->insns_cnt = prog->sec_insn_cnt; in bpf_object__init_prog()
767 prog->type = BPF_PROG_TYPE_UNSPEC; in bpf_object__init_prog()
768 prog->fd = -1; in bpf_object__init_prog()
775 prog->autoload = false; in bpf_object__init_prog()
779 prog->autoload = true; in bpf_object__init_prog()
782 prog->autoattach = true; in bpf_object__init_prog()
785 prog->log_level = obj->log_level; in bpf_object__init_prog()
787 prog->sec_name = strdup(sec_name); in bpf_object__init_prog()
788 if (!prog->sec_name) in bpf_object__init_prog()
791 prog->name = strdup(name); in bpf_object__init_prog()
792 if (!prog->name) in bpf_object__init_prog()
795 prog->insns = malloc(insn_data_sz); in bpf_object__init_prog()
796 if (!prog->insns) in bpf_object__init_prog()
798 memcpy(prog->insns, insn_data, insn_data_sz); in bpf_object__init_prog()
804 return -ENOMEM; in bpf_object__init_prog()
811 Elf_Data *symbols = obj->efile.symbols; in bpf_object__add_programs()
813 void *data = sec_data->d_buf; in bpf_object__add_programs()
814 size_t sec_sz = sec_data->d_size, sec_off, prog_sz, nr_syms; in bpf_object__add_programs()
819 progs = obj->programs; in bpf_object__add_programs()
820 nr_progs = obj->nr_programs; in bpf_object__add_programs()
821 nr_syms = symbols->d_size / sizeof(Elf64_Sym); in bpf_object__add_programs()
826 if (sym->st_shndx != sec_idx) in bpf_object__add_programs()
828 if (ELF64_ST_TYPE(sym->st_info) != STT_FUNC) in bpf_object__add_programs()
831 prog_sz = sym->st_size; in bpf_object__add_programs()
832 sec_off = sym->st_value; in bpf_object__add_programs()
834 name = elf_sym_str(obj, sym->st_name); in bpf_object__add_programs()
838 return -LIBBPF_ERRNO__FORMAT; in bpf_object__add_programs()
844 return -LIBBPF_ERRNO__FORMAT; in bpf_object__add_programs()
847 if (sec_idx != obj->efile.text_shndx && ELF64_ST_BIND(sym->st_info) == STB_LOCAL) { in bpf_object__add_programs()
849 return -ENOTSUP; in bpf_object__add_programs()
858 * In this case the original obj->programs in bpf_object__add_programs()
864 return -ENOMEM; in bpf_object__add_programs()
866 obj->programs = progs; in bpf_object__add_programs()
880 if (ELF64_ST_BIND(sym->st_info) != STB_LOCAL in bpf_object__add_programs()
881 && (ELF64_ST_VISIBILITY(sym->st_other) == STV_HIDDEN in bpf_object__add_programs()
882 || ELF64_ST_VISIBILITY(sym->st_other) == STV_INTERNAL)) in bpf_object__add_programs()
883 prog->mark_btf_static = true; in bpf_object__add_programs()
886 obj->nr_programs = nr_progs; in bpf_object__add_programs()
914 if (!strcmp(btf__name_by_offset(btf, m->name_off), name)) in find_member_by_name()
966 if (kern_data_member->type == kern_type_id) in find_struct_ops_kern_types()
972 return -EINVAL; in find_struct_ops_kern_types()
986 return map->def.type == BPF_MAP_TYPE_STRUCT_OPS; in bpf_map__is_struct_ops()
1002 st_ops = map->st_ops; in bpf_map__init_kern_struct_ops()
1003 type = st_ops->type; in bpf_map__init_kern_struct_ops()
1004 tname = st_ops->tname; in bpf_map__init_kern_struct_ops()
1013 map->name, st_ops->type_id, kern_type_id, kern_vtype_id); in bpf_map__init_kern_struct_ops()
1015 map->def.value_size = kern_vtype->size; in bpf_map__init_kern_struct_ops()
1016 map->btf_vmlinux_value_type_id = kern_vtype_id; in bpf_map__init_kern_struct_ops()
1018 st_ops->kern_vdata = calloc(1, kern_vtype->size); in bpf_map__init_kern_struct_ops()
1019 if (!st_ops->kern_vdata) in bpf_map__init_kern_struct_ops()
1020 return -ENOMEM; in bpf_map__init_kern_struct_ops()
1022 data = st_ops->data; in bpf_map__init_kern_struct_ops()
1023 kern_data_off = kern_data_member->offset / 8; in bpf_map__init_kern_struct_ops()
1024 kern_data = st_ops->kern_vdata + kern_data_off; in bpf_map__init_kern_struct_ops()
1036 mname = btf__name_by_offset(btf, member->name_off); in bpf_map__init_kern_struct_ops()
1040 map->name, mname); in bpf_map__init_kern_struct_ops()
1041 return -ENOTSUP; in bpf_map__init_kern_struct_ops()
1044 kern_member_idx = kern_member - btf_members(kern_type); in bpf_map__init_kern_struct_ops()
1048 map->name, mname); in bpf_map__init_kern_struct_ops()
1049 return -ENOTSUP; in bpf_map__init_kern_struct_ops()
1052 moff = member->offset / 8; in bpf_map__init_kern_struct_ops()
1053 kern_moff = kern_member->offset / 8; in bpf_map__init_kern_struct_ops()
1058 mtype = skip_mods_and_typedefs(btf, member->type, &mtype_id); in bpf_map__init_kern_struct_ops()
1059 kern_mtype = skip_mods_and_typedefs(kern_btf, kern_member->type, in bpf_map__init_kern_struct_ops()
1061 if (BTF_INFO_KIND(mtype->info) != in bpf_map__init_kern_struct_ops()
1062 BTF_INFO_KIND(kern_mtype->info)) { in bpf_map__init_kern_struct_ops()
1064 map->name, mname, BTF_INFO_KIND(mtype->info), in bpf_map__init_kern_struct_ops()
1065 BTF_INFO_KIND(kern_mtype->info)); in bpf_map__init_kern_struct_ops()
1066 return -ENOTSUP; in bpf_map__init_kern_struct_ops()
1072 prog = st_ops->progs[i]; in bpf_map__init_kern_struct_ops()
1077 kern_mtype->type, in bpf_map__init_kern_struct_ops()
1080 /* mtype->type must be a func_proto which was in bpf_map__init_kern_struct_ops()
1086 map->name, mname); in bpf_map__init_kern_struct_ops()
1087 return -ENOTSUP; in bpf_map__init_kern_struct_ops()
1090 prog->attach_btf_id = kern_type_id; in bpf_map__init_kern_struct_ops()
1091 prog->expected_attach_type = kern_member_idx; in bpf_map__init_kern_struct_ops()
1093 st_ops->kern_func_off[i] = kern_data_off + kern_moff; in bpf_map__init_kern_struct_ops()
1096 map->name, mname, prog->name, moff, in bpf_map__init_kern_struct_ops()
1106 map->name, mname, (ssize_t)msize, in bpf_map__init_kern_struct_ops()
1108 return -ENOTSUP; in bpf_map__init_kern_struct_ops()
1112 map->name, mname, (unsigned int)msize, in bpf_map__init_kern_struct_ops()
1126 for (i = 0; i < obj->nr_maps; i++) { in bpf_object__init_kern_struct_ops_maps()
1127 map = &obj->maps[i]; in bpf_object__init_kern_struct_ops_maps()
1132 err = bpf_map__init_kern_struct_ops(map, obj->btf, in bpf_object__init_kern_struct_ops_maps()
1133 obj->btf_vmlinux); in bpf_object__init_kern_struct_ops_maps()
1153 if (shndx == -1) in init_struct_ops_maps()
1156 btf = obj->btf; in init_struct_ops_maps()
1162 return -EINVAL; in init_struct_ops_maps()
1168 type = btf__type_by_id(obj->btf, vsi->type); in init_struct_ops_maps()
1169 var_name = btf__name_by_offset(obj->btf, type->name_off); in init_struct_ops_maps()
1171 type_id = btf__resolve_type(obj->btf, vsi->type); in init_struct_ops_maps()
1174 vsi->type, sec_name); in init_struct_ops_maps()
1175 return -EINVAL; in init_struct_ops_maps()
1178 type = btf__type_by_id(obj->btf, type_id); in init_struct_ops_maps()
1179 tname = btf__name_by_offset(obj->btf, type->name_off); in init_struct_ops_maps()
1182 return -ENOTSUP; in init_struct_ops_maps()
1186 return -EINVAL; in init_struct_ops_maps()
1193 map->sec_idx = shndx; in init_struct_ops_maps()
1194 map->sec_offset = vsi->offset; in init_struct_ops_maps()
1195 map->name = strdup(var_name); in init_struct_ops_maps()
1196 if (!map->name) in init_struct_ops_maps()
1197 return -ENOMEM; in init_struct_ops_maps()
1199 map->def.type = BPF_MAP_TYPE_STRUCT_OPS; in init_struct_ops_maps()
1200 map->def.key_size = sizeof(int); in init_struct_ops_maps()
1201 map->def.value_size = type->size; in init_struct_ops_maps()
1202 map->def.max_entries = 1; in init_struct_ops_maps()
1203 map->def.map_flags = map_flags; in init_struct_ops_maps()
1205 map->st_ops = calloc(1, sizeof(*map->st_ops)); in init_struct_ops_maps()
1206 if (!map->st_ops) in init_struct_ops_maps()
1207 return -ENOMEM; in init_struct_ops_maps()
1208 st_ops = map->st_ops; in init_struct_ops_maps()
1209 st_ops->data = malloc(type->size); in init_struct_ops_maps()
1210 st_ops->progs = calloc(btf_vlen(type), sizeof(*st_ops->progs)); in init_struct_ops_maps()
1211 st_ops->kern_func_off = malloc(btf_vlen(type) * in init_struct_ops_maps()
1212 sizeof(*st_ops->kern_func_off)); in init_struct_ops_maps()
1213 if (!st_ops->data || !st_ops->progs || !st_ops->kern_func_off) in init_struct_ops_maps()
1214 return -ENOMEM; in init_struct_ops_maps()
1216 if (vsi->offset + type->size > data->d_size) { in init_struct_ops_maps()
1219 return -EINVAL; in init_struct_ops_maps()
1222 memcpy(st_ops->data, in init_struct_ops_maps()
1223 data->d_buf + vsi->offset, in init_struct_ops_maps()
1224 type->size); in init_struct_ops_maps()
1225 st_ops->tname = tname; in init_struct_ops_maps()
1226 st_ops->type = type; in init_struct_ops_maps()
1227 st_ops->type_id = type_id; in init_struct_ops_maps()
1230 tname, type_id, var_name, vsi->offset); in init_struct_ops_maps()
1240 err = init_struct_ops_maps(obj, STRUCT_OPS_SEC, obj->efile.st_ops_shndx, in bpf_object_init_struct_ops()
1241 obj->efile.st_ops_data, 0); in bpf_object_init_struct_ops()
1243 obj->efile.st_ops_link_shndx, in bpf_object_init_struct_ops()
1244 obj->efile.st_ops_link_data, in bpf_object_init_struct_ops()
1260 return ERR_PTR(-ENOMEM); in bpf_object__new()
1263 strcpy(obj->path, path); in bpf_object__new()
1265 libbpf_strlcpy(obj->name, obj_name, sizeof(obj->name)); in bpf_object__new()
1268 libbpf_strlcpy(obj->name, basename((void *)path), sizeof(obj->name)); in bpf_object__new()
1269 end = strchr(obj->name, '.'); in bpf_object__new()
1274 obj->efile.fd = -1; in bpf_object__new()
1281 obj->efile.obj_buf = obj_buf; in bpf_object__new()
1282 obj->efile.obj_buf_sz = obj_buf_sz; in bpf_object__new()
1283 obj->efile.btf_maps_shndx = -1; in bpf_object__new()
1284 obj->efile.st_ops_shndx = -1; in bpf_object__new()
1285 obj->efile.st_ops_link_shndx = -1; in bpf_object__new()
1286 obj->kconfig_map_idx = -1; in bpf_object__new()
1288 obj->kern_version = get_kernel_version(); in bpf_object__new()
1289 obj->loaded = false; in bpf_object__new()
1296 if (!obj->efile.elf) in bpf_object__elf_finish()
1299 elf_end(obj->efile.elf); in bpf_object__elf_finish()
1300 obj->efile.elf = NULL; in bpf_object__elf_finish()
1301 obj->efile.symbols = NULL; in bpf_object__elf_finish()
1302 obj->efile.st_ops_data = NULL; in bpf_object__elf_finish()
1303 obj->efile.st_ops_link_data = NULL; in bpf_object__elf_finish()
1305 zfree(&obj->efile.secs); in bpf_object__elf_finish()
1306 obj->efile.sec_cnt = 0; in bpf_object__elf_finish()
1307 zclose(obj->efile.fd); in bpf_object__elf_finish()
1308 obj->efile.obj_buf = NULL; in bpf_object__elf_finish()
1309 obj->efile.obj_buf_sz = 0; in bpf_object__elf_finish()
1318 if (obj->efile.elf) { in bpf_object__elf_init()
1320 return -LIBBPF_ERRNO__LIBELF; in bpf_object__elf_init()
1323 if (obj->efile.obj_buf_sz > 0) { in bpf_object__elf_init()
1325 elf = elf_memory((char *)obj->efile.obj_buf, obj->efile.obj_buf_sz); in bpf_object__elf_init()
1327 obj->efile.fd = open(obj->path, O_RDONLY | O_CLOEXEC); in bpf_object__elf_init()
1328 if (obj->efile.fd < 0) { in bpf_object__elf_init()
1331 err = -errno; in bpf_object__elf_init()
1333 pr_warn("elf: failed to open %s: %s\n", obj->path, cp); in bpf_object__elf_init()
1337 elf = elf_begin(obj->efile.fd, ELF_C_READ_MMAP, NULL); in bpf_object__elf_init()
1341 pr_warn("elf: failed to open %s as ELF file: %s\n", obj->path, elf_errmsg(-1)); in bpf_object__elf_init()
1342 err = -LIBBPF_ERRNO__LIBELF; in bpf_object__elf_init()
1346 obj->efile.elf = elf; in bpf_object__elf_init()
1349 err = -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_init()
1350 pr_warn("elf: '%s' is not a proper ELF object\n", obj->path); in bpf_object__elf_init()
1355 err = -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_init()
1356 pr_warn("elf: '%s' is not a 64-bit ELF object\n", obj->path); in bpf_object__elf_init()
1360 obj->efile.ehdr = ehdr = elf64_getehdr(elf); in bpf_object__elf_init()
1361 if (!obj->efile.ehdr) { in bpf_object__elf_init()
1362 pr_warn("elf: failed to get ELF header from %s: %s\n", obj->path, elf_errmsg(-1)); in bpf_object__elf_init()
1363 err = -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_init()
1367 if (elf_getshdrstrndx(elf, &obj->efile.shstrndx)) { in bpf_object__elf_init()
1369 obj->path, elf_errmsg(-1)); in bpf_object__elf_init()
1370 err = -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_init()
1375 if (!elf_rawdata(elf_getscn(elf, obj->efile.shstrndx), NULL)) { in bpf_object__elf_init()
1377 obj->path, elf_errmsg(-1)); in bpf_object__elf_init()
1378 err = -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_init()
1383 if (ehdr->e_type != ET_REL || (ehdr->e_machine && ehdr->e_machine != EM_BPF)) { in bpf_object__elf_init()
1384 pr_warn("elf: %s is not a valid eBPF object file\n", obj->path); in bpf_object__elf_init()
1385 err = -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_init()
1398 if (obj->efile.ehdr->e_ident[EI_DATA] == ELFDATA2LSB) in bpf_object__check_endianness()
1401 if (obj->efile.ehdr->e_ident[EI_DATA] == ELFDATA2MSB) in bpf_object__check_endianness()
1406 pr_warn("elf: endianness mismatch in %s.\n", obj->path); in bpf_object__check_endianness()
1407 return -LIBBPF_ERRNO__ENDIAN; in bpf_object__check_endianness()
1414 pr_warn("invalid license section in %s\n", obj->path); in bpf_object__init_license()
1415 return -LIBBPF_ERRNO__FORMAT; in bpf_object__init_license()
1417 /* libbpf_strlcpy() only copies first N - 1 bytes, so size + 1 won't in bpf_object__init_license()
1420 libbpf_strlcpy(obj->license, data, min(size + 1, sizeof(obj->license))); in bpf_object__init_license()
1421 pr_debug("license of %s is %s\n", obj->path, obj->license); in bpf_object__init_license()
1431 pr_warn("invalid kver section in %s\n", obj->path); in bpf_object__init_kversion()
1432 return -LIBBPF_ERRNO__FORMAT; in bpf_object__init_kversion()
1435 obj->kern_version = kver; in bpf_object__init_kversion()
1436 pr_debug("kernel version of %s is %x\n", obj->path, obj->kern_version); in bpf_object__init_kversion()
1454 return -EINVAL; in find_elf_sec_sz()
1459 *size = data->d_size; in find_elf_sec_sz()
1463 return -ENOENT; in find_elf_sec_sz()
1468 Elf_Data *symbols = obj->efile.symbols; in find_elf_var_sym()
1472 for (si = 0; si < symbols->d_size / sizeof(Elf64_Sym); si++) { in find_elf_var_sym()
1475 if (ELF64_ST_TYPE(sym->st_info) != STT_OBJECT) in find_elf_var_sym()
1478 if (ELF64_ST_BIND(sym->st_info) != STB_GLOBAL && in find_elf_var_sym()
1479 ELF64_ST_BIND(sym->st_info) != STB_WEAK) in find_elf_var_sym()
1482 sname = elf_sym_str(obj, sym->st_name); in find_elf_var_sym()
1485 return ERR_PTR(-EIO); in find_elf_var_sym()
1491 return ERR_PTR(-ENOENT); in find_elf_var_sym()
1499 err = libbpf_ensure_mem((void **)&obj->maps, &obj->maps_cap, in bpf_object__add_map()
1500 sizeof(*obj->maps), obj->nr_maps + 1); in bpf_object__add_map()
1504 map = &obj->maps[obj->nr_maps++]; in bpf_object__add_map()
1505 map->obj = obj; in bpf_object__add_map()
1506 map->fd = -1; in bpf_object__add_map()
1507 map->inner_map_fd = -1; in bpf_object__add_map()
1508 map->autocreate = true; in bpf_object__add_map()
1527 if (!map->mmaped) in bpf_map_mmap_resize()
1528 return -EINVAL; in bpf_map_mmap_resize()
1533 mmaped = mmap(NULL, new_sz, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_ANONYMOUS, -1, 0); in bpf_map_mmap_resize()
1535 return -errno; in bpf_map_mmap_resize()
1537 memcpy(mmaped, map->mmaped, min(old_sz, new_sz)); in bpf_map_mmap_resize()
1538 munmap(map->mmaped, old_sz); in bpf_map_mmap_resize()
1539 map->mmaped = mmaped; in bpf_map_mmap_resize()
1573 * '.rodata.abracad' kernel and user-visible name. in internal_map_name()
1582 sfx_len = BPF_OBJ_NAME_LEN - 1; in internal_map_name()
1588 pfx_len = min((size_t)BPF_OBJ_NAME_LEN - sfx_len - 1, strlen(obj->name)); in internal_map_name()
1590 snprintf(map_name, sizeof(map_name), "%.*s%.*s", pfx_len, obj->name, in internal_map_name()
1615 if (!map->btf_value_type_id) in map_is_mmapable()
1618 t = btf__type_by_id(obj->btf, map->btf_value_type_id); in map_is_mmapable()
1624 vt = btf__type_by_id(obj->btf, vsi->type); in map_is_mmapable()
1628 if (btf_var(vt)->linkage != BTF_VAR_STATIC) in map_is_mmapable()
1648 map->libbpf_type = type; in bpf_object__init_internal_map()
1649 map->sec_idx = sec_idx; in bpf_object__init_internal_map()
1650 map->sec_offset = 0; in bpf_object__init_internal_map()
1651 map->real_name = strdup(real_name); in bpf_object__init_internal_map()
1652 map->name = internal_map_name(obj, real_name); in bpf_object__init_internal_map()
1653 if (!map->real_name || !map->name) { in bpf_object__init_internal_map()
1654 zfree(&map->real_name); in bpf_object__init_internal_map()
1655 zfree(&map->name); in bpf_object__init_internal_map()
1656 return -ENOMEM; in bpf_object__init_internal_map()
1659 def = &map->def; in bpf_object__init_internal_map()
1660 def->type = BPF_MAP_TYPE_ARRAY; in bpf_object__init_internal_map()
1661 def->key_size = sizeof(int); in bpf_object__init_internal_map()
1662 def->value_size = data_sz; in bpf_object__init_internal_map()
1663 def->max_entries = 1; in bpf_object__init_internal_map()
1664 def->map_flags = type == LIBBPF_MAP_RODATA || type == LIBBPF_MAP_KCONFIG in bpf_object__init_internal_map()
1671 def->map_flags |= BPF_F_MMAPABLE; in bpf_object__init_internal_map()
1674 map->name, map->sec_idx, map->sec_offset, def->map_flags); in bpf_object__init_internal_map()
1676 mmap_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries); in bpf_object__init_internal_map()
1677 map->mmaped = mmap(NULL, mmap_sz, PROT_READ | PROT_WRITE, in bpf_object__init_internal_map()
1678 MAP_SHARED | MAP_ANONYMOUS, -1, 0); in bpf_object__init_internal_map()
1679 if (map->mmaped == MAP_FAILED) { in bpf_object__init_internal_map()
1680 err = -errno; in bpf_object__init_internal_map()
1681 map->mmaped = NULL; in bpf_object__init_internal_map()
1683 map->name, err); in bpf_object__init_internal_map()
1684 zfree(&map->real_name); in bpf_object__init_internal_map()
1685 zfree(&map->name); in bpf_object__init_internal_map()
1690 memcpy(map->mmaped, data, data_sz); in bpf_object__init_internal_map()
1692 pr_debug("map %td is \"%s\"\n", map - obj->maps, map->name); in bpf_object__init_internal_map()
1703 * Populate obj->maps with libbpf internal maps. in bpf_object__init_global_data_maps()
1705 for (sec_idx = 1; sec_idx < obj->efile.sec_cnt; sec_idx++) { in bpf_object__init_global_data_maps()
1706 sec_desc = &obj->efile.secs[sec_idx]; in bpf_object__init_global_data_maps()
1709 if (!sec_desc->data || sec_desc->data->d_size == 0) in bpf_object__init_global_data_maps()
1712 switch (sec_desc->sec_type) { in bpf_object__init_global_data_maps()
1717 sec_desc->data->d_buf, in bpf_object__init_global_data_maps()
1718 sec_desc->data->d_size); in bpf_object__init_global_data_maps()
1721 obj->has_rodata = true; in bpf_object__init_global_data_maps()
1725 sec_desc->data->d_buf, in bpf_object__init_global_data_maps()
1726 sec_desc->data->d_size); in bpf_object__init_global_data_maps()
1733 sec_desc->data->d_size); in bpf_object__init_global_data_maps()
1751 for (i = 0; i < obj->nr_extern; i++) { in find_extern_by_name()
1752 if (strcmp(obj->externs[i].name, name) == 0) in find_extern_by_name()
1753 return &obj->externs[i]; in find_extern_by_name()
1761 switch (ext->kcfg.type) { in set_kcfg_value_tri()
1765 ext->name, value); in set_kcfg_value_tri()
1766 return -EINVAL; in set_kcfg_value_tri()
1786 ext->name, value); in set_kcfg_value_tri()
1787 return -EINVAL; in set_kcfg_value_tri()
1789 ext->is_set = true; in set_kcfg_value_tri()
1798 if (ext->kcfg.type != KCFG_CHAR_ARR) { in set_kcfg_value_str()
1800 ext->name, value); in set_kcfg_value_str()
1801 return -EINVAL; in set_kcfg_value_str()
1805 if (len < 2 || value[len - 1] != '"') { in set_kcfg_value_str()
1807 ext->name, value); in set_kcfg_value_str()
1808 return -EINVAL; in set_kcfg_value_str()
1812 len -= 2; in set_kcfg_value_str()
1813 if (len >= ext->kcfg.sz) { in set_kcfg_value_str()
1815 ext->name, value, len, ext->kcfg.sz - 1); in set_kcfg_value_str()
1816 len = ext->kcfg.sz - 1; in set_kcfg_value_str()
1820 ext->is_set = true; in set_kcfg_value_str()
1832 err = -errno; in parse_u64()
1838 return -EINVAL; in parse_u64()
1843 static bool is_kcfg_value_in_range(const struct extern_desc *ext, __u64 v) in is_kcfg_value_in_range() argument
1845 int bit_sz = ext->kcfg.sz * 8; in is_kcfg_value_in_range()
1847 if (ext->kcfg.sz == 8) in is_kcfg_value_in_range()
1850 /* Validate that value stored in u64 fits in integer of `ext->sz` in is_kcfg_value_in_range()
1855 * -2^(Y-1) <= X <= 2^(Y-1) - 1 in is_kcfg_value_in_range()
1856 * 0 <= X + 2^(Y-1) <= 2^Y - 1 in is_kcfg_value_in_range()
1857 * 0 <= X + 2^(Y-1) < 2^Y in is_kcfg_value_in_range()
1859 * For unsigned target integer, check that all the (64 - Y) bits are in is_kcfg_value_in_range()
1862 if (ext->kcfg.is_signed) in is_kcfg_value_in_range()
1863 return v + (1ULL << (bit_sz - 1)) < (1ULL << bit_sz); in is_kcfg_value_in_range()
1865 return (v >> bit_sz) == 0; in is_kcfg_value_in_range()
1871 if (ext->kcfg.type != KCFG_INT && ext->kcfg.type != KCFG_CHAR && in set_kcfg_value_num()
1872 ext->kcfg.type != KCFG_BOOL) { in set_kcfg_value_num()
1874 ext->name, (unsigned long long)value); in set_kcfg_value_num()
1875 return -EINVAL; in set_kcfg_value_num()
1877 if (ext->kcfg.type == KCFG_BOOL && value > 1) { in set_kcfg_value_num()
1879 ext->name, (unsigned long long)value); in set_kcfg_value_num()
1880 return -EINVAL; in set_kcfg_value_num()
1885 ext->name, (unsigned long long)value, ext->kcfg.sz); in set_kcfg_value_num()
1886 return -ERANGE; in set_kcfg_value_num()
1888 switch (ext->kcfg.sz) { in set_kcfg_value_num()
1902 return -EINVAL; in set_kcfg_value_num()
1904 ext->is_set = true; in set_kcfg_value_num()
1923 return -EINVAL; in bpf_object__process_kconfig_line()
1928 if (buf[len - 1] == '\n') in bpf_object__process_kconfig_line()
1929 buf[len - 1] = '\0'; in bpf_object__process_kconfig_line()
1935 return -EINVAL; in bpf_object__process_kconfig_line()
1939 if (!ext || ext->is_set) in bpf_object__process_kconfig_line()
1942 ext_val = data + ext->kcfg.data_off; in bpf_object__process_kconfig_line()
1956 pr_warn("extern (kcfg) '%s': value '%s' isn't a valid integer\n", ext->name, value); in bpf_object__process_kconfig_line()
1959 if (ext->kcfg.type != KCFG_INT && ext->kcfg.type != KCFG_CHAR) { in bpf_object__process_kconfig_line()
1960 pr_warn("extern (kcfg) '%s': value '%s' implies integer type\n", ext->name, value); in bpf_object__process_kconfig_line()
1961 return -EINVAL; in bpf_object__process_kconfig_line()
1968 pr_debug("extern (kcfg) '%s': set to %s\n", ext->name, value); in bpf_object__process_kconfig_line()
1980 len = snprintf(buf, PATH_MAX, "/boot/config-%s", uts.release); in bpf_object__read_kconfig_file()
1982 return -EINVAL; in bpf_object__read_kconfig_file()
1984 return -ENAMETOOLONG; in bpf_object__read_kconfig_file()
1993 return -ENOENT; in bpf_object__read_kconfig_file()
2019 err = -errno; in bpf_object__read_kconfig_mem()
2020 pr_warn("failed to open in-memory Kconfig: %d\n", err); in bpf_object__read_kconfig_mem()
2027 pr_warn("error parsing in-memory Kconfig line '%s': %d\n", in bpf_object__read_kconfig_mem()
2043 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__init_kconfig_map()
2044 ext = &obj->externs[i]; in bpf_object__init_kconfig_map()
2045 if (ext->type == EXT_KCFG) in bpf_object__init_kconfig_map()
2052 map_sz = last_ext->kcfg.data_off + last_ext->kcfg.sz; in bpf_object__init_kconfig_map()
2054 ".kconfig", obj->efile.symbols_shndx, in bpf_object__init_kconfig_map()
2059 obj->kconfig_map_idx = obj->nr_maps - 1; in bpf_object__init_kconfig_map()
2074 *res_id = t->type; in skip_mods_and_typedefs()
2075 t = btf__type_by_id(btf, t->type); in skip_mods_and_typedefs()
2090 t = skip_mods_and_typedefs(btf, t->type, res_id); in resolve_func_ptr()
2137 const struct btf_type *t = skip_mods_and_typedefs(btf, m->type, NULL); in get_map_field_int()
2138 const char *name = btf__name_by_offset(btf, m->name_off); in get_map_field_int()
2148 arr_t = btf__type_by_id(btf, t->type); in get_map_field_int()
2151 map_name, name, t->type); in get_map_field_int()
2160 *res = arr_info->nelems; in get_map_field_int()
2170 return -EINVAL; in pathname_concat()
2172 return -ENAMETOOLONG; in pathname_concat()
2211 const char *name = btf__name_by_offset(btf, m->name_off); in parse_btf_map_def()
2215 return -EINVAL; in parse_btf_map_def()
2218 if (!get_map_field_int(map_name, btf, m, &map_def->map_type)) in parse_btf_map_def()
2219 return -EINVAL; in parse_btf_map_def()
2220 map_def->parts |= MAP_DEF_MAP_TYPE; in parse_btf_map_def()
2222 if (!get_map_field_int(map_name, btf, m, &map_def->max_entries)) in parse_btf_map_def()
2223 return -EINVAL; in parse_btf_map_def()
2224 map_def->parts |= MAP_DEF_MAX_ENTRIES; in parse_btf_map_def()
2226 if (!get_map_field_int(map_name, btf, m, &map_def->map_flags)) in parse_btf_map_def()
2227 return -EINVAL; in parse_btf_map_def()
2228 map_def->parts |= MAP_DEF_MAP_FLAGS; in parse_btf_map_def()
2230 if (!get_map_field_int(map_name, btf, m, &map_def->numa_node)) in parse_btf_map_def()
2231 return -EINVAL; in parse_btf_map_def()
2232 map_def->parts |= MAP_DEF_NUMA_NODE; in parse_btf_map_def()
2237 return -EINVAL; in parse_btf_map_def()
2238 if (map_def->key_size && map_def->key_size != sz) { in parse_btf_map_def()
2240 map_name, map_def->key_size, sz); in parse_btf_map_def()
2241 return -EINVAL; in parse_btf_map_def()
2243 map_def->key_size = sz; in parse_btf_map_def()
2244 map_def->parts |= MAP_DEF_KEY_SIZE; in parse_btf_map_def()
2248 t = btf__type_by_id(btf, m->type); in parse_btf_map_def()
2251 map_name, m->type); in parse_btf_map_def()
2252 return -EINVAL; in parse_btf_map_def()
2255 pr_warn("map '%s': key spec is not PTR: %s.\n", in parse_btf_map_def()
2257 return -EINVAL; in parse_btf_map_def()
2259 sz = btf__resolve_size(btf, t->type); in parse_btf_map_def()
2262 map_name, t->type, (ssize_t)sz); in parse_btf_map_def()
2265 if (map_def->key_size && map_def->key_size != sz) { in parse_btf_map_def()
2267 map_name, map_def->key_size, (ssize_t)sz); in parse_btf_map_def()
2268 return -EINVAL; in parse_btf_map_def()
2270 map_def->key_size = sz; in parse_btf_map_def()
2271 map_def->key_type_id = t->type; in parse_btf_map_def()
2272 map_def->parts |= MAP_DEF_KEY_SIZE | MAP_DEF_KEY_TYPE; in parse_btf_map_def()
2277 return -EINVAL; in parse_btf_map_def()
2278 if (map_def->value_size && map_def->value_size != sz) { in parse_btf_map_def()
2280 map_name, map_def->value_size, sz); in parse_btf_map_def()
2281 return -EINVAL; in parse_btf_map_def()
2283 map_def->value_size = sz; in parse_btf_map_def()
2284 map_def->parts |= MAP_DEF_VALUE_SIZE; in parse_btf_map_def()
2288 t = btf__type_by_id(btf, m->type); in parse_btf_map_def()
2291 map_name, m->type); in parse_btf_map_def()
2292 return -EINVAL; in parse_btf_map_def()
2295 pr_warn("map '%s': value spec is not PTR: %s.\n", in parse_btf_map_def()
2297 return -EINVAL; in parse_btf_map_def()
2299 sz = btf__resolve_size(btf, t->type); in parse_btf_map_def()
2302 map_name, t->type, (ssize_t)sz); in parse_btf_map_def()
2305 if (map_def->value_size && map_def->value_size != sz) { in parse_btf_map_def()
2307 map_name, map_def->value_size, (ssize_t)sz); in parse_btf_map_def()
2308 return -EINVAL; in parse_btf_map_def()
2310 map_def->value_size = sz; in parse_btf_map_def()
2311 map_def->value_type_id = t->type; in parse_btf_map_def()
2312 map_def->parts |= MAP_DEF_VALUE_SIZE | MAP_DEF_VALUE_TYPE; in parse_btf_map_def()
2315 bool is_map_in_map = bpf_map_type__is_map_in_map(map_def->map_type); in parse_btf_map_def()
2316 bool is_prog_array = map_def->map_type == BPF_MAP_TYPE_PROG_ARRAY; in parse_btf_map_def()
2317 const char *desc = is_map_in_map ? "map-in-map inner" : "prog-array value"; in parse_btf_map_def()
2322 pr_warn("map '%s': multi-level inner maps not supported.\n", in parse_btf_map_def()
2324 return -ENOTSUP; in parse_btf_map_def()
2326 if (i != vlen - 1) { in parse_btf_map_def()
2329 return -EINVAL; in parse_btf_map_def()
2332 pr_warn("map '%s': should be map-in-map or prog-array.\n", in parse_btf_map_def()
2334 return -ENOTSUP; in parse_btf_map_def()
2336 if (map_def->value_size && map_def->value_size != 4) { in parse_btf_map_def()
2338 map_name, map_def->value_size); in parse_btf_map_def()
2339 return -EINVAL; in parse_btf_map_def()
2341 map_def->value_size = 4; in parse_btf_map_def()
2342 t = btf__type_by_id(btf, m->type); in parse_btf_map_def()
2345 map_name, desc, m->type); in parse_btf_map_def()
2346 return -EINVAL; in parse_btf_map_def()
2348 if (!btf_is_array(t) || btf_array(t)->nelems) { in parse_btf_map_def()
2349 pr_warn("map '%s': %s spec is not a zero-sized array.\n", in parse_btf_map_def()
2351 return -EINVAL; in parse_btf_map_def()
2353 t = skip_mods_and_typedefs(btf, btf_array(t)->type, NULL); in parse_btf_map_def()
2357 return -EINVAL; in parse_btf_map_def()
2359 t = skip_mods_and_typedefs(btf, t->type, NULL); in parse_btf_map_def()
2362 pr_warn("map '%s': prog-array value def is of unexpected kind %s.\n", in parse_btf_map_def()
2364 return -EINVAL; in parse_btf_map_def()
2369 pr_warn("map '%s': map-in-map inner def is of unexpected kind %s.\n", in parse_btf_map_def()
2371 return -EINVAL; in parse_btf_map_def()
2379 map_def->parts |= MAP_DEF_INNER_MAP; in parse_btf_map_def()
2385 return -EINVAL; in parse_btf_map_def()
2388 return -EINVAL; in parse_btf_map_def()
2392 return -EINVAL; in parse_btf_map_def()
2394 map_def->pinning = val; in parse_btf_map_def()
2395 map_def->parts |= MAP_DEF_PINNING; in parse_btf_map_def()
2400 return -EINVAL; in parse_btf_map_def()
2401 map_def->map_extra = map_extra; in parse_btf_map_def()
2402 map_def->parts |= MAP_DEF_MAP_EXTRA; in parse_btf_map_def()
2406 return -ENOTSUP; in parse_btf_map_def()
2412 if (map_def->map_type == BPF_MAP_TYPE_UNSPEC) { in parse_btf_map_def()
2414 return -EINVAL; in parse_btf_map_def()
2429 * a power-of-2 multiple of kernel's page size. If user diligently in adjust_ringbuf_sz()
2436 * user-set size to satisfy both user size request and kernel in adjust_ringbuf_sz()
2445 * very close to UINT_MAX but is not a power-of-2 multiple of in adjust_ringbuf_sz()
2453 return map->def.type == BPF_MAP_TYPE_RINGBUF || in map_is_ringbuf()
2454 map->def.type == BPF_MAP_TYPE_USER_RINGBUF; in map_is_ringbuf()
2459 map->def.type = def->map_type; in fill_map_from_def()
2460 map->def.key_size = def->key_size; in fill_map_from_def()
2461 map->def.value_size = def->value_size; in fill_map_from_def()
2462 map->def.max_entries = def->max_entries; in fill_map_from_def()
2463 map->def.map_flags = def->map_flags; in fill_map_from_def()
2464 map->map_extra = def->map_extra; in fill_map_from_def()
2466 map->numa_node = def->numa_node; in fill_map_from_def()
2467 map->btf_key_type_id = def->key_type_id; in fill_map_from_def()
2468 map->btf_value_type_id = def->value_type_id; in fill_map_from_def()
2470 /* auto-adjust BPF ringbuf map max_entries to be a multiple of page size */ in fill_map_from_def()
2472 map->def.max_entries = adjust_ringbuf_sz(map->def.max_entries); in fill_map_from_def()
2474 if (def->parts & MAP_DEF_MAP_TYPE) in fill_map_from_def()
2475 pr_debug("map '%s': found type = %u.\n", map->name, def->map_type); in fill_map_from_def()
2477 if (def->parts & MAP_DEF_KEY_TYPE) in fill_map_from_def()
2479 map->name, def->key_type_id, def->key_size); in fill_map_from_def()
2480 else if (def->parts & MAP_DEF_KEY_SIZE) in fill_map_from_def()
2481 pr_debug("map '%s': found key_size = %u.\n", map->name, def->key_size); in fill_map_from_def()
2483 if (def->parts & MAP_DEF_VALUE_TYPE) in fill_map_from_def()
2485 map->name, def->value_type_id, def->value_size); in fill_map_from_def()
2486 else if (def->parts & MAP_DEF_VALUE_SIZE) in fill_map_from_def()
2487 pr_debug("map '%s': found value_size = %u.\n", map->name, def->value_size); in fill_map_from_def()
2489 if (def->parts & MAP_DEF_MAX_ENTRIES) in fill_map_from_def()
2490 pr_debug("map '%s': found max_entries = %u.\n", map->name, def->max_entries); in fill_map_from_def()
2491 if (def->parts & MAP_DEF_MAP_FLAGS) in fill_map_from_def()
2492 pr_debug("map '%s': found map_flags = 0x%x.\n", map->name, def->map_flags); in fill_map_from_def()
2493 if (def->parts & MAP_DEF_MAP_EXTRA) in fill_map_from_def()
2494 pr_debug("map '%s': found map_extra = 0x%llx.\n", map->name, in fill_map_from_def()
2495 (unsigned long long)def->map_extra); in fill_map_from_def()
2496 if (def->parts & MAP_DEF_PINNING) in fill_map_from_def()
2497 pr_debug("map '%s': found pinning = %u.\n", map->name, def->pinning); in fill_map_from_def()
2498 if (def->parts & MAP_DEF_NUMA_NODE) in fill_map_from_def()
2499 pr_debug("map '%s': found numa_node = %u.\n", map->name, def->numa_node); in fill_map_from_def()
2501 if (def->parts & MAP_DEF_INNER_MAP) in fill_map_from_def()
2502 pr_debug("map '%s': found inner map definition.\n", map->name); in fill_map_from_def()
2530 var = btf__type_by_id(obj->btf, vi->type); in bpf_object__init_user_btf_map()
2532 map_name = btf__name_by_offset(obj->btf, var->name_off); in bpf_object__init_user_btf_map()
2536 return -EINVAL; in bpf_object__init_user_btf_map()
2538 if ((__u64)vi->offset + vi->size > data->d_size) { in bpf_object__init_user_btf_map()
2540 return -EINVAL; in bpf_object__init_user_btf_map()
2545 return -EINVAL; in bpf_object__init_user_btf_map()
2547 if (var_extra->linkage != BTF_VAR_GLOBAL_ALLOCATED) { in bpf_object__init_user_btf_map()
2549 map_name, btf_var_linkage_str(var_extra->linkage)); in bpf_object__init_user_btf_map()
2550 return -EOPNOTSUPP; in bpf_object__init_user_btf_map()
2553 def = skip_mods_and_typedefs(obj->btf, var->type, NULL); in bpf_object__init_user_btf_map()
2557 return -EINVAL; in bpf_object__init_user_btf_map()
2559 if (def->size > vi->size) { in bpf_object__init_user_btf_map()
2561 return -EINVAL; in bpf_object__init_user_btf_map()
2567 map->name = strdup(map_name); in bpf_object__init_user_btf_map()
2568 if (!map->name) { in bpf_object__init_user_btf_map()
2570 return -ENOMEM; in bpf_object__init_user_btf_map()
2572 map->libbpf_type = LIBBPF_MAP_UNSPEC; in bpf_object__init_user_btf_map()
2573 map->def.type = BPF_MAP_TYPE_UNSPEC; in bpf_object__init_user_btf_map()
2574 map->sec_idx = sec_idx; in bpf_object__init_user_btf_map()
2575 map->sec_offset = vi->offset; in bpf_object__init_user_btf_map()
2576 map->btf_var_idx = var_idx; in bpf_object__init_user_btf_map()
2578 map_name, map->sec_idx, map->sec_offset); in bpf_object__init_user_btf_map()
2580 err = parse_btf_map_def(map->name, obj->btf, def, strict, &map_def, &inner_def); in bpf_object__init_user_btf_map()
2589 pr_warn("map '%s': couldn't build pin path.\n", map->name); in bpf_object__init_user_btf_map()
2595 map->inner_map = calloc(1, sizeof(*map->inner_map)); in bpf_object__init_user_btf_map()
2596 if (!map->inner_map) in bpf_object__init_user_btf_map()
2597 return -ENOMEM; in bpf_object__init_user_btf_map()
2598 map->inner_map->fd = -1; in bpf_object__init_user_btf_map()
2599 map->inner_map->sec_idx = sec_idx; in bpf_object__init_user_btf_map()
2600 map->inner_map->name = malloc(strlen(map_name) + sizeof(".inner") + 1); in bpf_object__init_user_btf_map()
2601 if (!map->inner_map->name) in bpf_object__init_user_btf_map()
2602 return -ENOMEM; in bpf_object__init_user_btf_map()
2603 sprintf(map->inner_map->name, "%s.inner", map_name); in bpf_object__init_user_btf_map()
2605 fill_map_from_def(map->inner_map, &inner_def); in bpf_object__init_user_btf_map()
2625 if (obj->efile.btf_maps_shndx < 0) in bpf_object__init_user_btf_maps()
2628 scn = elf_sec_by_idx(obj, obj->efile.btf_maps_shndx); in bpf_object__init_user_btf_maps()
2632 MAPS_ELF_SEC, obj->path); in bpf_object__init_user_btf_maps()
2633 return -EINVAL; in bpf_object__init_user_btf_maps()
2636 nr_types = btf__type_cnt(obj->btf); in bpf_object__init_user_btf_maps()
2638 t = btf__type_by_id(obj->btf, i); in bpf_object__init_user_btf_maps()
2641 name = btf__name_by_offset(obj->btf, t->name_off); in bpf_object__init_user_btf_maps()
2644 obj->efile.btf_maps_sec_btf_id = i; in bpf_object__init_user_btf_maps()
2651 return -ENOENT; in bpf_object__init_user_btf_maps()
2657 obj->efile.btf_maps_shndx, in bpf_object__init_user_btf_maps()
2693 return sh->sh_flags & SHF_EXECINSTR; in section_have_execinstr()
2728 t->info = BTF_INFO_ENC(BTF_KIND_INT, 0, 0); in bpf_object__sanitize_btf()
2734 t->size = 1; in bpf_object__sanitize_btf()
2738 const struct btf_var_secinfo *v = btf_var_secinfos(t); in bpf_object__sanitize_btf() local
2743 name = (char *)btf__name_by_offset(btf, t->name_off); in bpf_object__sanitize_btf()
2751 t->info = BTF_INFO_ENC(BTF_KIND_STRUCT, 0, vlen); in bpf_object__sanitize_btf()
2752 for (j = 0; j < vlen; j++, v++, m++) { in bpf_object__sanitize_btf()
2754 m->offset = v->offset * 8; in bpf_object__sanitize_btf()
2755 m->type = v->type; in bpf_object__sanitize_btf()
2757 vt = (void *)btf__type_by_id(btf, v->type); in bpf_object__sanitize_btf()
2758 m->name_off = vt->name_off; in bpf_object__sanitize_btf()
2763 t->info = BTF_INFO_ENC(BTF_KIND_ENUM, 0, vlen); in bpf_object__sanitize_btf()
2764 t->size = sizeof(__u32); /* kernel enforced */ in bpf_object__sanitize_btf()
2767 t->info = BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0); in bpf_object__sanitize_btf()
2770 t->info = BTF_INFO_ENC(BTF_KIND_FUNC, 0, 0); in bpf_object__sanitize_btf()
2772 /* replace FLOAT with an equally-sized empty STRUCT; in bpf_object__sanitize_btf()
2776 t->name_off = 0; in bpf_object__sanitize_btf()
2777 t->info = BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 0); in bpf_object__sanitize_btf()
2780 t->name_off = 0; in bpf_object__sanitize_btf()
2781 t->info = BTF_INFO_ENC(BTF_KIND_CONST, 0, 0); in bpf_object__sanitize_btf()
2784 t->info = btf_type_info(btf_kind(t), btf_vlen(t), false); in bpf_object__sanitize_btf()
2799 t->info = BTF_INFO_ENC(BTF_KIND_UNION, 0, vlen); in bpf_object__sanitize_btf()
2801 m->type = enum64_placeholder_id; in bpf_object__sanitize_btf()
2802 m->offset = 0; in bpf_object__sanitize_btf()
2812 return obj->efile.btf_maps_shndx >= 0 || in libbpf_needs_btf()
2813 obj->efile.st_ops_shndx >= 0 || in libbpf_needs_btf()
2814 obj->efile.st_ops_link_shndx >= 0 || in libbpf_needs_btf()
2815 obj->nr_extern > 0; in libbpf_needs_btf()
2820 return obj->efile.st_ops_shndx >= 0 || obj->efile.st_ops_link_shndx >= 0; in kernel_needs_btf()
2827 int err = -ENOENT; in bpf_object__init_btf()
2830 obj->btf = btf__new(btf_data->d_buf, btf_data->d_size); in bpf_object__init_btf()
2831 err = libbpf_get_error(obj->btf); in bpf_object__init_btf()
2833 obj->btf = NULL; in bpf_object__init_btf()
2837 /* enforce 8-byte pointers for BPF-targeted BTFs */ in bpf_object__init_btf()
2838 btf__set_pointer_size(obj->btf, 8); in bpf_object__init_btf()
2844 if (!obj->btf) { in bpf_object__init_btf()
2849 obj->btf_ext = btf_ext__new(btf_ext_data->d_buf, btf_ext_data->d_size); in bpf_object__init_btf()
2850 err = libbpf_get_error(obj->btf_ext); in bpf_object__init_btf()
2854 obj->btf_ext = NULL; in bpf_object__init_btf()
2859 ext_segs[0] = &obj->btf_ext->func_info; in bpf_object__init_btf()
2860 ext_segs[1] = &obj->btf_ext->line_info; in bpf_object__init_btf()
2861 ext_segs[2] = &obj->btf_ext->core_relo_info; in bpf_object__init_btf()
2868 if (seg->sec_cnt == 0) in bpf_object__init_btf()
2871 seg->sec_idxs = calloc(seg->sec_cnt, sizeof(*seg->sec_idxs)); in bpf_object__init_btf()
2872 if (!seg->sec_idxs) { in bpf_object__init_btf()
2873 err = -ENOMEM; in bpf_object__init_btf()
2884 sec_name = btf__name_by_offset(obj->btf, sec->sec_name_off); in bpf_object__init_btf()
2891 seg->sec_idxs[sec_num - 1] = elf_ndxscn(scn); in bpf_object__init_btf()
2908 return a->offset - b->offset; in compare_vsi_off()
2915 const char *sec_name = btf__name_by_offset(btf, t->name_off); in btf_fixup_datasec()
2922 return -ENOENT; in btf_fixup_datasec()
2925 /* Extern-backing datasecs (.ksyms, .kconfig) have their size and in btf_fixup_datasec()
2937 * to be optional. But the STV_HIDDEN handling is non-optional for any in btf_fixup_datasec()
2938 * non-extern DATASEC, so the variable fixup loop below handles both in btf_fixup_datasec()
2939 * functions at the same time, paying the cost of BTF VAR <-> ELF in btf_fixup_datasec()
2942 if (t->size == 0) { in btf_fixup_datasec()
2947 return -ENOENT; in btf_fixup_datasec()
2950 t->size = size; in btf_fixup_datasec()
2960 t_var = btf__type_by_id(btf, vsi->type); in btf_fixup_datasec()
2962 pr_debug("sec '%s': unexpected non-VAR type found\n", sec_name); in btf_fixup_datasec()
2963 return -EINVAL; in btf_fixup_datasec()
2967 if (var->linkage == BTF_VAR_STATIC || var->linkage == BTF_VAR_GLOBAL_EXTERN) in btf_fixup_datasec()
2970 var_name = btf__name_by_offset(btf, t_var->name_off); in btf_fixup_datasec()
2974 return -ENOENT; in btf_fixup_datasec()
2981 return -ENOENT; in btf_fixup_datasec()
2985 vsi->offset = sym->st_value; in btf_fixup_datasec()
2994 if (ELF64_ST_VISIBILITY(sym->st_other) == STV_HIDDEN in btf_fixup_datasec()
2995 || ELF64_ST_VISIBILITY(sym->st_other) == STV_INTERNAL) in btf_fixup_datasec()
2996 var->linkage = BTF_VAR_STATIC; in btf_fixup_datasec()
3008 if (!obj->btf) in bpf_object_fixup_btf()
3011 n = btf__type_cnt(obj->btf); in bpf_object_fixup_btf()
3013 struct btf_type *t = btf_type_by_id(obj->btf, i); in bpf_object_fixup_btf()
3021 err = btf_fixup_datasec(obj, obj->btf, t); in bpf_object_fixup_btf()
3032 if (prog->type == BPF_PROG_TYPE_STRUCT_OPS || in prog_needs_vmlinux_btf()
3033 prog->type == BPF_PROG_TYPE_LSM) in prog_needs_vmlinux_btf()
3039 if (prog->type == BPF_PROG_TYPE_TRACING && !prog->attach_prog_fd) in prog_needs_vmlinux_btf()
3050 /* CO-RE relocations need kernel BTF, only when btf_custom_path in obj_needs_vmlinux_btf()
3053 if (obj->btf_ext && obj->btf_ext->core_relo_info.len && !obj->btf_custom_path) in obj_needs_vmlinux_btf()
3057 for (i = 0; i < obj->nr_extern; i++) { in obj_needs_vmlinux_btf()
3060 ext = &obj->externs[i]; in obj_needs_vmlinux_btf()
3061 if (ext->type == EXT_KSYM && ext->ksym.type_id) in obj_needs_vmlinux_btf()
3066 if (!prog->autoload) in obj_needs_vmlinux_btf()
3080 if (obj->btf_vmlinux || obj->gen_loader) in bpf_object__load_vmlinux_btf()
3086 obj->btf_vmlinux = btf__load_vmlinux_btf(); in bpf_object__load_vmlinux_btf()
3087 err = libbpf_get_error(obj->btf_vmlinux); in bpf_object__load_vmlinux_btf()
3090 obj->btf_vmlinux = NULL; in bpf_object__load_vmlinux_btf()
3098 struct btf *kern_btf = obj->btf; in bpf_object__sanitize_and_load_btf()
3102 if (!obj->btf) in bpf_object__sanitize_and_load_btf()
3107 err = -EOPNOTSUPP; in bpf_object__sanitize_and_load_btf()
3122 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__sanitize_and_load_btf()
3123 struct bpf_program *prog = &obj->programs[i]; in bpf_object__sanitize_and_load_btf()
3128 if (!prog->mark_btf_static || !prog_is_subprog(obj, prog)) in bpf_object__sanitize_and_load_btf()
3131 n = btf__type_cnt(obj->btf); in bpf_object__sanitize_and_load_btf()
3133 t = btf_type_by_id(obj->btf, j); in bpf_object__sanitize_and_load_btf()
3137 name = btf__str_by_offset(obj->btf, t->name_off); in bpf_object__sanitize_and_load_btf()
3138 if (strcmp(name, prog->name) != 0) in bpf_object__sanitize_and_load_btf()
3141 t->info = btf_type_info(BTF_KIND_FUNC, BTF_FUNC_STATIC, 0); in bpf_object__sanitize_and_load_btf()
3152 raw_data = btf__raw_data(obj->btf, &sz); in bpf_object__sanitize_and_load_btf()
3158 /* enforce 8-byte pointers for BPF-targeted BTFs */ in bpf_object__sanitize_and_load_btf()
3159 btf__set_pointer_size(obj->btf, 8); in bpf_object__sanitize_and_load_btf()
3165 if (obj->gen_loader) { in bpf_object__sanitize_and_load_btf()
3170 return -ENOMEM; in bpf_object__sanitize_and_load_btf()
3171 bpf_gen__load_btf(obj->gen_loader, raw_data, raw_size); in bpf_object__sanitize_and_load_btf()
3173 * This fd == 0 will not be used with any syscall and will be reset to -1 eventually. in bpf_object__sanitize_and_load_btf()
3178 err = btf_load_into_kernel(kern_btf, obj->log_buf, obj->log_size, in bpf_object__sanitize_and_load_btf()
3179 obj->log_level ? 1 : 0); in bpf_object__sanitize_and_load_btf()
3184 btf__set_fd(obj->btf, btf__fd(kern_btf)); in bpf_object__sanitize_and_load_btf()
3185 btf__set_fd(kern_btf, -1); in bpf_object__sanitize_and_load_btf()
3205 name = elf_strptr(obj->efile.elf, obj->efile.strtabidx, off); in elf_sym_str()
3208 off, obj->path, elf_errmsg(-1)); in elf_sym_str()
3219 name = elf_strptr(obj->efile.elf, obj->efile.shstrndx, off); in elf_sec_str()
3222 off, obj->path, elf_errmsg(-1)); in elf_sec_str()
3233 scn = elf_getscn(obj->efile.elf, idx); in elf_sec_by_idx()
3236 idx, obj->path, elf_errmsg(-1)); in elf_sec_by_idx()
3245 Elf *elf = obj->efile.elf; in elf_sec_by_name()
3271 elf_ndxscn(scn), obj->path, elf_errmsg(-1)); in elf_sec_hdr()
3290 name = elf_sec_str(obj, sh->sh_name); in elf_sec_name()
3293 elf_ndxscn(scn), obj->path, elf_errmsg(-1)); in elf_sec_name()
3311 obj->path, elf_errmsg(-1)); in elf_sec_data()
3320 if (idx >= obj->efile.symbols->d_size / sizeof(Elf64_Sym)) in elf_sym_by_idx()
3323 return (Elf64_Sym *)obj->efile.symbols->d_buf + idx; in elf_sym_by_idx()
3328 if (idx >= data->d_size / sizeof(Elf64_Rel)) in elf_rel_by_idx()
3331 return (Elf64_Rel *)data->d_buf + idx; in elf_rel_by_idx()
3343 if (hdr->sh_type == SHT_STRTAB) in ignore_elf_section()
3347 if (hdr->sh_type == SHT_LLVM_ADDRSIG) in ignore_elf_section()
3351 if (hdr->sh_type == SHT_PROGBITS && hdr->sh_size == 0 && in ignore_elf_section()
3360 name += sizeof(".rel") - 1; in ignore_elf_section()
3379 if (a->sec_idx != b->sec_idx) in cmp_progs()
3380 return a->sec_idx < b->sec_idx ? -1 : 1; in cmp_progs()
3383 return a->sec_insn_off < b->sec_insn_off ? -1 : 1; in cmp_progs()
3389 Elf *elf = obj->efile.elf; in bpf_object__elf_collect()
3398 /* ELF section indices are 0-based, but sec #0 is special "invalid" in bpf_object__elf_collect()
3403 if (elf_getshdrnum(obj->efile.elf, &obj->efile.sec_cnt)) { in bpf_object__elf_collect()
3405 obj->path, elf_errmsg(-1)); in bpf_object__elf_collect()
3406 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3408 obj->efile.secs = calloc(obj->efile.sec_cnt, sizeof(*obj->efile.secs)); in bpf_object__elf_collect()
3409 if (!obj->efile.secs) in bpf_object__elf_collect()
3410 return -ENOMEM; in bpf_object__elf_collect()
3419 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3421 if (sh->sh_type == SHT_SYMTAB) { in bpf_object__elf_collect()
3422 if (obj->efile.symbols) { in bpf_object__elf_collect()
3423 pr_warn("elf: multiple symbol tables in %s\n", obj->path); in bpf_object__elf_collect()
3424 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3429 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3433 obj->efile.symbols = data; in bpf_object__elf_collect()
3434 obj->efile.symbols_shndx = idx; in bpf_object__elf_collect()
3435 obj->efile.strtabidx = sh->sh_link; in bpf_object__elf_collect()
3439 if (!obj->efile.symbols) { in bpf_object__elf_collect()
3441 obj->path); in bpf_object__elf_collect()
3442 return -ENOENT; in bpf_object__elf_collect()
3448 sec_desc = &obj->efile.secs[idx]; in bpf_object__elf_collect()
3452 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3454 name = elf_sec_str(obj, sh->sh_name); in bpf_object__elf_collect()
3456 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3463 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3466 idx, name, (unsigned long)data->d_size, in bpf_object__elf_collect()
3467 (int)sh->sh_link, (unsigned long)sh->sh_flags, in bpf_object__elf_collect()
3468 (int)sh->sh_type); in bpf_object__elf_collect()
3471 err = bpf_object__init_license(obj, data->d_buf, data->d_size); in bpf_object__elf_collect()
3475 err = bpf_object__init_kversion(obj, data->d_buf, data->d_size); in bpf_object__elf_collect()
3480 return -ENOTSUP; in bpf_object__elf_collect()
3482 obj->efile.btf_maps_shndx = idx; in bpf_object__elf_collect()
3484 if (sh->sh_type != SHT_PROGBITS) in bpf_object__elf_collect()
3485 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3488 if (sh->sh_type != SHT_PROGBITS) in bpf_object__elf_collect()
3489 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3491 } else if (sh->sh_type == SHT_SYMTAB) { in bpf_object__elf_collect()
3493 } else if (sh->sh_type == SHT_PROGBITS && data->d_size > 0) { in bpf_object__elf_collect()
3494 if (sh->sh_flags & SHF_EXECINSTR) { in bpf_object__elf_collect()
3496 obj->efile.text_shndx = idx; in bpf_object__elf_collect()
3502 sec_desc->sec_type = SEC_DATA; in bpf_object__elf_collect()
3503 sec_desc->shdr = sh; in bpf_object__elf_collect()
3504 sec_desc->data = data; in bpf_object__elf_collect()
3507 sec_desc->sec_type = SEC_RODATA; in bpf_object__elf_collect()
3508 sec_desc->shdr = sh; in bpf_object__elf_collect()
3509 sec_desc->data = data; in bpf_object__elf_collect()
3511 obj->efile.st_ops_data = data; in bpf_object__elf_collect()
3512 obj->efile.st_ops_shndx = idx; in bpf_object__elf_collect()
3514 obj->efile.st_ops_link_data = data; in bpf_object__elf_collect()
3515 obj->efile.st_ops_link_shndx = idx; in bpf_object__elf_collect()
3520 } else if (sh->sh_type == SHT_REL) { in bpf_object__elf_collect()
3521 int targ_sec_idx = sh->sh_info; /* points to other section */ in bpf_object__elf_collect()
3523 if (sh->sh_entsize != sizeof(Elf64_Rel) || in bpf_object__elf_collect()
3524 targ_sec_idx >= obj->efile.sec_cnt) in bpf_object__elf_collect()
3525 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3538 sec_desc->sec_type = SEC_RELO; in bpf_object__elf_collect()
3539 sec_desc->shdr = sh; in bpf_object__elf_collect()
3540 sec_desc->data = data; in bpf_object__elf_collect()
3541 } else if (sh->sh_type == SHT_NOBITS && (strcmp(name, BSS_SEC) == 0 || in bpf_object__elf_collect()
3543 sec_desc->sec_type = SEC_BSS; in bpf_object__elf_collect()
3544 sec_desc->shdr = sh; in bpf_object__elf_collect()
3545 sec_desc->data = data; in bpf_object__elf_collect()
3548 (size_t)sh->sh_size); in bpf_object__elf_collect()
3552 if (!obj->efile.strtabidx || obj->efile.strtabidx > idx) { in bpf_object__elf_collect()
3553 pr_warn("elf: symbol strings section missing or invalid in %s\n", obj->path); in bpf_object__elf_collect()
3554 return -LIBBPF_ERRNO__FORMAT; in bpf_object__elf_collect()
3557 /* sort BPF programs by section name and in-section instruction offset in bpf_object__elf_collect()
3560 if (obj->nr_programs) in bpf_object__elf_collect()
3561 qsort(obj->programs, obj->nr_programs, sizeof(*obj->programs), cmp_progs); in bpf_object__elf_collect()
3568 int bind = ELF64_ST_BIND(sym->st_info); in sym_is_extern()
3570 return sym->st_shndx == SHN_UNDEF && in sym_is_extern()
3572 ELF64_ST_TYPE(sym->st_info) == STT_NOTYPE; in sym_is_extern()
3577 int bind = ELF64_ST_BIND(sym->st_info); in sym_is_subprog()
3578 int type = ELF64_ST_TYPE(sym->st_info); in sym_is_subprog()
3581 if (sym->st_shndx != text_shndx) in sym_is_subprog()
3599 return -ESRCH; in find_extern_btf_id()
3608 tname = btf__name_by_offset(btf, t->name_off); in find_extern_btf_id()
3613 btf_var(t)->linkage != BTF_VAR_GLOBAL_EXTERN) in find_extern_btf_id()
3614 return -EINVAL; in find_extern_btf_id()
3617 return -EINVAL; in find_extern_btf_id()
3622 return -ENOENT; in find_extern_btf_id()
3631 return -ESRCH; in find_extern_sec_btf_id()
3642 if (vs->type == ext_btf_id) in find_extern_sec_btf_id()
3647 return -ENOENT; in find_extern_sec_btf_id()
3657 name = btf__name_by_offset(btf, t->name_off); in find_kcfg_type()
3666 return t->size == 1 ? KCFG_BOOL : KCFG_UNKNOWN; in find_kcfg_type()
3669 if (t->size == 1) in find_kcfg_type()
3671 if (t->size < 1 || t->size > 8 || (t->size & (t->size - 1))) in find_kcfg_type()
3676 if (t->size != 4) in find_kcfg_type()
3686 if (btf_array(t)->nelems == 0) in find_kcfg_type()
3688 if (find_kcfg_type(btf, btf_array(t)->type, NULL) != KCFG_CHAR) in find_kcfg_type()
3701 if (a->type != b->type) in cmp_externs()
3702 return a->type < b->type ? -1 : 1; in cmp_externs()
3704 if (a->type == EXT_KCFG) { in cmp_externs()
3706 if (a->kcfg.align != b->kcfg.align) in cmp_externs()
3707 return a->kcfg.align > b->kcfg.align ? -1 : 1; in cmp_externs()
3709 if (a->kcfg.sz != b->kcfg.sz) in cmp_externs()
3710 return a->kcfg.sz < b->kcfg.sz ? -1 : 1; in cmp_externs()
3714 return strcmp(a->name, b->name); in cmp_externs()
3752 vt = btf__type_by_id(btf, vs->type); in add_dummy_ksym_var()
3783 if (!obj->efile.symbols) in bpf_object__collect_externs()
3786 scn = elf_sec_by_idx(obj, obj->efile.symbols_shndx); in bpf_object__collect_externs()
3788 if (!sh || sh->sh_entsize != sizeof(Elf64_Sym)) in bpf_object__collect_externs()
3789 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_externs()
3791 dummy_var_btf_id = add_dummy_ksym_var(obj->btf); in bpf_object__collect_externs()
3795 n = sh->sh_size / sh->sh_entsize; in bpf_object__collect_externs()
3802 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_externs()
3805 ext_name = elf_sym_str(obj, sym->st_name); in bpf_object__collect_externs()
3809 ext = obj->externs; in bpf_object__collect_externs()
3810 ext = libbpf_reallocarray(ext, obj->nr_extern + 1, sizeof(*ext)); in bpf_object__collect_externs()
3812 return -ENOMEM; in bpf_object__collect_externs()
3813 obj->externs = ext; in bpf_object__collect_externs()
3814 ext = &ext[obj->nr_extern]; in bpf_object__collect_externs()
3816 obj->nr_extern++; in bpf_object__collect_externs()
3818 ext->btf_id = find_extern_btf_id(obj->btf, ext_name); in bpf_object__collect_externs()
3819 if (ext->btf_id <= 0) { in bpf_object__collect_externs()
3821 ext_name, ext->btf_id); in bpf_object__collect_externs()
3822 return ext->btf_id; in bpf_object__collect_externs()
3824 t = btf__type_by_id(obj->btf, ext->btf_id); in bpf_object__collect_externs()
3825 ext->name = strdup(btf__name_by_offset(obj->btf, t->name_off)); in bpf_object__collect_externs()
3826 if (!ext->name) in bpf_object__collect_externs()
3827 return -ENOMEM; in bpf_object__collect_externs()
3828 ext->sym_idx = i; in bpf_object__collect_externs()
3829 ext->is_weak = ELF64_ST_BIND(sym->st_info) == STB_WEAK; in bpf_object__collect_externs()
3831 ext_essent_len = bpf_core_essential_name_len(ext->name); in bpf_object__collect_externs()
3832 ext->essent_name = NULL; in bpf_object__collect_externs()
3833 if (ext_essent_len != strlen(ext->name)) { in bpf_object__collect_externs()
3834 ext->essent_name = strndup(ext->name, ext_essent_len); in bpf_object__collect_externs()
3835 if (!ext->essent_name) in bpf_object__collect_externs()
3836 return -ENOMEM; in bpf_object__collect_externs()
3839 ext->sec_btf_id = find_extern_sec_btf_id(obj->btf, ext->btf_id); in bpf_object__collect_externs()
3840 if (ext->sec_btf_id <= 0) { in bpf_object__collect_externs()
3842 ext_name, ext->btf_id, ext->sec_btf_id); in bpf_object__collect_externs()
3843 return ext->sec_btf_id; in bpf_object__collect_externs()
3845 sec = (void *)btf__type_by_id(obj->btf, ext->sec_btf_id); in bpf_object__collect_externs()
3846 sec_name = btf__name_by_offset(obj->btf, sec->name_off); in bpf_object__collect_externs()
3851 ext->name, KCONFIG_SEC); in bpf_object__collect_externs()
3852 return -ENOTSUP; in bpf_object__collect_externs()
3855 ext->type = EXT_KCFG; in bpf_object__collect_externs()
3856 ext->kcfg.sz = btf__resolve_size(obj->btf, t->type); in bpf_object__collect_externs()
3857 if (ext->kcfg.sz <= 0) { in bpf_object__collect_externs()
3859 ext_name, ext->kcfg.sz); in bpf_object__collect_externs()
3860 return ext->kcfg.sz; in bpf_object__collect_externs()
3862 ext->kcfg.align = btf__align_of(obj->btf, t->type); in bpf_object__collect_externs()
3863 if (ext->kcfg.align <= 0) { in bpf_object__collect_externs()
3865 ext_name, ext->kcfg.align); in bpf_object__collect_externs()
3866 return -EINVAL; in bpf_object__collect_externs()
3868 ext->kcfg.type = find_kcfg_type(obj->btf, t->type, in bpf_object__collect_externs()
3869 &ext->kcfg.is_signed); in bpf_object__collect_externs()
3870 if (ext->kcfg.type == KCFG_UNKNOWN) { in bpf_object__collect_externs()
3872 return -ENOTSUP; in bpf_object__collect_externs()
3876 ext->type = EXT_KSYM; in bpf_object__collect_externs()
3877 skip_mods_and_typedefs(obj->btf, t->type, in bpf_object__collect_externs()
3878 &ext->ksym.type_id); in bpf_object__collect_externs()
3881 return -ENOTSUP; in bpf_object__collect_externs()
3884 pr_debug("collected %d externs total\n", obj->nr_extern); in bpf_object__collect_externs()
3886 if (!obj->nr_extern) in bpf_object__collect_externs()
3890 qsort(obj->externs, obj->nr_extern, sizeof(*ext), cmp_externs); in bpf_object__collect_externs()
3894 * pretending that each extern is a 8-byte variable in bpf_object__collect_externs()
3897 /* find existing 4-byte integer type in BTF to use for fake in bpf_object__collect_externs()
3900 int int_btf_id = find_int_btf_id(obj->btf); in bpf_object__collect_externs()
3902 * will be used to replace the vs->type and in bpf_object__collect_externs()
3908 dummy_var = btf__type_by_id(obj->btf, dummy_var_btf_id); in bpf_object__collect_externs()
3909 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__collect_externs()
3910 ext = &obj->externs[i]; in bpf_object__collect_externs()
3911 if (ext->type != EXT_KSYM) in bpf_object__collect_externs()
3914 i, ext->sym_idx, ext->name); in bpf_object__collect_externs()
3923 vt = (void *)btf__type_by_id(obj->btf, vs->type); in bpf_object__collect_externs()
3924 ext_name = btf__name_by_offset(obj->btf, vt->name_off); in bpf_object__collect_externs()
3929 return -ESRCH; in bpf_object__collect_externs()
3936 func_proto = btf__type_by_id(obj->btf, in bpf_object__collect_externs()
3937 vt->type); in bpf_object__collect_externs()
3945 dummy_var->name_off; in bpf_object__collect_externs()
3946 vs->type = dummy_var_btf_id; in bpf_object__collect_externs()
3947 vt->info &= ~0xffff; in bpf_object__collect_externs()
3948 vt->info |= BTF_FUNC_GLOBAL; in bpf_object__collect_externs()
3950 btf_var(vt)->linkage = BTF_VAR_GLOBAL_ALLOCATED; in bpf_object__collect_externs()
3951 vt->type = int_btf_id; in bpf_object__collect_externs()
3953 vs->offset = off; in bpf_object__collect_externs()
3954 vs->size = sizeof(int); in bpf_object__collect_externs()
3956 sec->size = off; in bpf_object__collect_externs()
3963 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__collect_externs()
3964 ext = &obj->externs[i]; in bpf_object__collect_externs()
3965 if (ext->type != EXT_KCFG) in bpf_object__collect_externs()
3968 ext->kcfg.data_off = roundup(off, ext->kcfg.align); in bpf_object__collect_externs()
3969 off = ext->kcfg.data_off + ext->kcfg.sz; in bpf_object__collect_externs()
3971 i, ext->sym_idx, ext->kcfg.data_off, ext->name); in bpf_object__collect_externs()
3973 sec->size = off; in bpf_object__collect_externs()
3978 t = btf__type_by_id(obj->btf, vs->type); in bpf_object__collect_externs()
3979 ext_name = btf__name_by_offset(obj->btf, t->name_off); in bpf_object__collect_externs()
3984 return -ESRCH; in bpf_object__collect_externs()
3986 btf_var(t)->linkage = BTF_VAR_GLOBAL_ALLOCATED; in bpf_object__collect_externs()
3987 vs->offset = ext->kcfg.data_off; in bpf_object__collect_externs()
3995 return prog->sec_idx == obj->efile.text_shndx; in prog_is_subprog()
4007 if (!strcmp(prog->name, name)) in bpf_object__find_program_by_name()
4016 switch (obj->efile.secs[shndx].sec_type) { in bpf_object__shndx_is_data()
4029 return shndx == obj->efile.btf_maps_shndx; in bpf_object__shndx_is_maps()
4035 if (shndx == obj->efile.symbols_shndx) in bpf_object__section_to_libbpf_map_type()
4038 switch (obj->efile.secs[shndx].sec_type) { in bpf_object__section_to_libbpf_map_type()
4055 struct bpf_insn *insn = &prog->insns[insn_idx]; in bpf_program__record_reloc()
4056 size_t map_idx, nr_maps = prog->obj->nr_maps; in bpf_program__record_reloc()
4057 struct bpf_object *obj = prog->obj; in bpf_program__record_reloc()
4058 __u32 shdr_idx = sym->st_shndx; in bpf_program__record_reloc()
4065 prog->name, sym_name, insn_idx, insn->code); in bpf_program__record_reloc()
4066 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4070 int sym_idx = ELF64_R_SYM(rel->r_info); in bpf_program__record_reloc()
4071 int i, n = obj->nr_extern; in bpf_program__record_reloc()
4075 ext = &obj->externs[i]; in bpf_program__record_reloc()
4076 if (ext->sym_idx == sym_idx) in bpf_program__record_reloc()
4081 prog->name, sym_name, sym_idx); in bpf_program__record_reloc()
4082 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4085 prog->name, i, ext->name, ext->sym_idx, insn_idx); in bpf_program__record_reloc()
4086 if (insn->code == (BPF_JMP | BPF_CALL)) in bpf_program__record_reloc()
4087 reloc_desc->type = RELO_EXTERN_CALL; in bpf_program__record_reloc()
4089 reloc_desc->type = RELO_EXTERN_LD64; in bpf_program__record_reloc()
4090 reloc_desc->insn_idx = insn_idx; in bpf_program__record_reloc()
4091 reloc_desc->ext_idx = i; in bpf_program__record_reloc()
4095 /* sub-program call relocation */ in bpf_program__record_reloc()
4097 if (insn->src_reg != BPF_PSEUDO_CALL) { in bpf_program__record_reloc()
4098 pr_warn("prog '%s': incorrect bpf_call opcode\n", prog->name); in bpf_program__record_reloc()
4099 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4102 if (!shdr_idx || shdr_idx != obj->efile.text_shndx) { in bpf_program__record_reloc()
4105 prog->name, sym_name, sym_sec_name); in bpf_program__record_reloc()
4106 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4108 if (sym->st_value % BPF_INSN_SZ) { in bpf_program__record_reloc()
4110 prog->name, sym_name, (size_t)sym->st_value); in bpf_program__record_reloc()
4111 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4113 reloc_desc->type = RELO_CALL; in bpf_program__record_reloc()
4114 reloc_desc->insn_idx = insn_idx; in bpf_program__record_reloc()
4115 reloc_desc->sym_off = sym->st_value; in bpf_program__record_reloc()
4121 prog->name, sym_name, shdr_idx); in bpf_program__record_reloc()
4122 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4126 if (sym_is_subprog(sym, obj->efile.text_shndx)) { in bpf_program__record_reloc()
4127 /* global_func: sym->st_value = offset in the section, insn->imm = 0. in bpf_program__record_reloc()
4128 * local_func: sym->st_value = 0, insn->imm = offset in the section. in bpf_program__record_reloc()
4130 if ((sym->st_value % BPF_INSN_SZ) || (insn->imm % BPF_INSN_SZ)) { in bpf_program__record_reloc()
4132 prog->name, sym_name, (size_t)sym->st_value, insn->imm); in bpf_program__record_reloc()
4133 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4136 reloc_desc->type = RELO_SUBPROG_ADDR; in bpf_program__record_reloc()
4137 reloc_desc->insn_idx = insn_idx; in bpf_program__record_reloc()
4138 reloc_desc->sym_off = sym->st_value; in bpf_program__record_reloc()
4149 prog->name, sym_name, sym_sec_name); in bpf_program__record_reloc()
4150 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4153 map = &obj->maps[map_idx]; in bpf_program__record_reloc()
4154 if (map->libbpf_type != type || in bpf_program__record_reloc()
4155 map->sec_idx != sym->st_shndx || in bpf_program__record_reloc()
4156 map->sec_offset != sym->st_value) in bpf_program__record_reloc()
4159 prog->name, map_idx, map->name, map->sec_idx, in bpf_program__record_reloc()
4160 map->sec_offset, insn_idx); in bpf_program__record_reloc()
4165 prog->name, sym_sec_name, (size_t)sym->st_value); in bpf_program__record_reloc()
4166 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4168 reloc_desc->type = RELO_LD64; in bpf_program__record_reloc()
4169 reloc_desc->insn_idx = insn_idx; in bpf_program__record_reloc()
4170 reloc_desc->map_idx = map_idx; in bpf_program__record_reloc()
4171 reloc_desc->sym_off = 0; /* sym->st_value determines map_idx */ in bpf_program__record_reloc()
4178 prog->name, sym_sec_name); in bpf_program__record_reloc()
4179 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4182 map = &obj->maps[map_idx]; in bpf_program__record_reloc()
4183 if (map->libbpf_type != type || map->sec_idx != sym->st_shndx) in bpf_program__record_reloc()
4186 prog->name, map_idx, map->name, map->sec_idx, in bpf_program__record_reloc()
4187 map->sec_offset, insn_idx); in bpf_program__record_reloc()
4192 prog->name, sym_sec_name); in bpf_program__record_reloc()
4193 return -LIBBPF_ERRNO__RELOC; in bpf_program__record_reloc()
4196 reloc_desc->type = RELO_DATA; in bpf_program__record_reloc()
4197 reloc_desc->insn_idx = insn_idx; in bpf_program__record_reloc()
4198 reloc_desc->map_idx = map_idx; in bpf_program__record_reloc()
4199 reloc_desc->sym_off = sym->st_value; in bpf_program__record_reloc()
4205 return insn_idx >= prog->sec_insn_off && in prog_contains_insn()
4206 insn_idx < prog->sec_insn_off + prog->sec_insn_cnt; in prog_contains_insn()
4212 int l = 0, r = obj->nr_programs - 1, m; in find_prog_by_sec_insn()
4215 if (!obj->nr_programs) in find_prog_by_sec_insn()
4219 m = l + (r - l + 1) / 2; in find_prog_by_sec_insn()
4220 prog = &obj->programs[m]; in find_prog_by_sec_insn()
4222 if (prog->sec_idx < sec_idx || in find_prog_by_sec_insn()
4223 (prog->sec_idx == sec_idx && prog->sec_insn_off <= insn_idx)) in find_prog_by_sec_insn()
4226 r = m - 1; in find_prog_by_sec_insn()
4231 prog = &obj->programs[l]; in find_prog_by_sec_insn()
4232 if (prog->sec_idx == sec_idx && prog_contains_insn(prog, insn_idx)) in find_prog_by_sec_insn()
4241 size_t sec_idx = shdr->sh_info, sym_idx; in bpf_object__collect_prog_relos()
4252 if (sec_idx >= obj->efile.sec_cnt) in bpf_object__collect_prog_relos()
4253 return -EINVAL; in bpf_object__collect_prog_relos()
4258 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_prog_relos()
4260 relo_sec_name = elf_sec_str(obj, shdr->sh_name); in bpf_object__collect_prog_relos()
4263 return -EINVAL; in bpf_object__collect_prog_relos()
4267 nrels = shdr->sh_size / shdr->sh_entsize; in bpf_object__collect_prog_relos()
4273 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_prog_relos()
4276 sym_idx = ELF64_R_SYM(rel->r_info); in bpf_object__collect_prog_relos()
4281 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_prog_relos()
4284 if (sym->st_shndx >= obj->efile.sec_cnt) { in bpf_object__collect_prog_relos()
4286 relo_sec_name, sym_idx, (size_t)sym->st_shndx, i); in bpf_object__collect_prog_relos()
4287 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_prog_relos()
4290 if (rel->r_offset % BPF_INSN_SZ || rel->r_offset >= scn_data->d_size) { in bpf_object__collect_prog_relos()
4292 relo_sec_name, (size_t)rel->r_offset, i); in bpf_object__collect_prog_relos()
4293 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_prog_relos()
4296 insn_idx = rel->r_offset / BPF_INSN_SZ; in bpf_object__collect_prog_relos()
4303 if (ELF64_ST_TYPE(sym->st_info) == STT_SECTION && sym->st_name == 0) in bpf_object__collect_prog_relos()
4304 sym_name = elf_sec_name(obj, elf_sec_by_idx(obj, sym->st_shndx)); in bpf_object__collect_prog_relos()
4306 sym_name = elf_sym_str(obj, sym->st_name); in bpf_object__collect_prog_relos()
4319 relos = libbpf_reallocarray(prog->reloc_desc, in bpf_object__collect_prog_relos()
4320 prog->nr_reloc + 1, sizeof(*relos)); in bpf_object__collect_prog_relos()
4322 return -ENOMEM; in bpf_object__collect_prog_relos()
4323 prog->reloc_desc = relos; in bpf_object__collect_prog_relos()
4326 insn_idx -= prog->sec_insn_off; in bpf_object__collect_prog_relos()
4327 err = bpf_program__record_reloc(prog, &relos[prog->nr_reloc], in bpf_object__collect_prog_relos()
4332 prog->nr_reloc++; in bpf_object__collect_prog_relos()
4341 if (!obj->btf) in map_fill_btf_type_info()
4342 return -ENOENT; in map_fill_btf_type_info()
4344 /* if it's BTF-defined map, we don't need to search for type IDs. in map_fill_btf_type_info()
4348 if (map->sec_idx == obj->efile.btf_maps_shndx || bpf_map__is_struct_ops(map)) in map_fill_btf_type_info()
4356 return -ENOENT; in map_fill_btf_type_info()
4358 id = btf__find_by_name(obj->btf, map->real_name); in map_fill_btf_type_info()
4362 map->btf_key_type_id = 0; in map_fill_btf_type_info()
4363 map->btf_value_type_id = id; in map_fill_btf_type_info()
4379 err = -errno; in bpf_get_map_info_from_fdinfo()
4387 info->type = val; in bpf_get_map_info_from_fdinfo()
4389 info->key_size = val; in bpf_get_map_info_from_fdinfo()
4391 info->value_size = val; in bpf_get_map_info_from_fdinfo()
4393 info->max_entries = val; in bpf_get_map_info_from_fdinfo()
4395 info->map_flags = val; in bpf_get_map_info_from_fdinfo()
4405 return map->autocreate; in bpf_map__autocreate()
4410 if (map->obj->loaded) in bpf_map__set_autocreate()
4411 return libbpf_err(-EBUSY); in bpf_map__set_autocreate()
4413 map->autocreate = autocreate; in bpf_map__set_autocreate()
4432 if (name_len == BPF_OBJ_NAME_LEN - 1 && strncmp(map->name, info.name, name_len) == 0) in bpf_map__reuse_fd()
4433 new_name = strdup(map->name); in bpf_map__reuse_fd()
4438 return libbpf_err(-errno); in bpf_map__reuse_fd()
4447 err = -errno; in bpf_map__reuse_fd()
4451 err = zclose(map->fd); in bpf_map__reuse_fd()
4453 err = -errno; in bpf_map__reuse_fd()
4456 free(map->name); in bpf_map__reuse_fd()
4458 map->fd = new_fd; in bpf_map__reuse_fd()
4459 map->name = new_name; in bpf_map__reuse_fd()
4460 map->def.type = info.type; in bpf_map__reuse_fd()
4461 map->def.key_size = info.key_size; in bpf_map__reuse_fd()
4462 map->def.value_size = info.value_size; in bpf_map__reuse_fd()
4463 map->def.max_entries = info.max_entries; in bpf_map__reuse_fd()
4464 map->def.map_flags = info.map_flags; in bpf_map__reuse_fd()
4465 map->btf_key_type_id = info.btf_key_type_id; in bpf_map__reuse_fd()
4466 map->btf_value_type_id = info.btf_value_type_id; in bpf_map__reuse_fd()
4467 map->reused = true; in bpf_map__reuse_fd()
4468 map->map_extra = info.map_extra; in bpf_map__reuse_fd()
4481 return map->def.max_entries; in bpf_map__max_entries()
4486 if (!bpf_map_type__is_map_in_map(map->def.type)) in bpf_map__inner_map()
4489 return map->inner_map; in bpf_map__inner_map()
4494 if (map->obj->loaded) in bpf_map__set_max_entries()
4495 return libbpf_err(-EBUSY); in bpf_map__set_max_entries()
4497 map->def.max_entries = max_entries; in bpf_map__set_max_entries()
4499 /* auto-adjust BPF ringbuf map max_entries to be a multiple of page size */ in bpf_map__set_max_entries()
4501 map->def.max_entries = adjust_ringbuf_sz(map->def.max_entries); in bpf_map__set_max_entries()
4516 if (obj->gen_loader) in bpf_object__probe_loading()
4534 return -ret; in bpf_object__probe_loading()
4583 ret = -errno; in probe_kern_global_data()
4586 __func__, cp, -ret); in probe_kern_global_data()
4686 BTF_TYPE_DECL_TAG_ENC(1, 2, -1), in probe_kern_btf_decl_tag()
4728 * non-zero expected attach type (i.e., not a BPF_CGROUP_INET_INGRESS) in probe_kern_exp_attach_type()
4740 BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, -8), /* r1 += -8 */ in probe_kern_probe_read_kernel()
4763 ret = -errno; in probe_prog_bind_map()
4766 __func__, cp, -ret); in probe_prog_bind_map()
4824 return -errno; in probe_perf_link()
4829 link_fd = bpf_link_create(prog_fd, -1, BPF_PERF_EVENT, NULL); in probe_perf_link()
4830 err = -errno; /* close() can clobber errno */ in probe_perf_link()
4836 return link_fd < 0 && err == -EBADF; in probe_perf_link()
4855 return -errno; in probe_uprobe_multi_link()
4857 /* Creating uprobe in '/' binary should fail with -EBADF. */ in probe_uprobe_multi_link()
4862 link_fd = bpf_link_create(prog_fd, -1, BPF_TRACE_UPROBE_MULTI, &link_opts); in probe_uprobe_multi_link()
4863 err = -errno; /* close() can clobber errno */ in probe_uprobe_multi_link()
4869 return link_fd < 0 && err == -EBADF; in probe_uprobe_multi_link()
4957 "memcg-based memory accounting", probe_memcg_account,
4969 "BPF multi-uprobe link support", probe_uprobe_multi_link,
4978 if (obj && obj->gen_loader) in kernel_supports()
4984 if (READ_ONCE(feat->res) == FEAT_UNKNOWN) { in kernel_supports()
4985 ret = feat->probe(); in kernel_supports()
4987 WRITE_ONCE(feat->res, FEAT_SUPPORTED); in kernel_supports()
4989 WRITE_ONCE(feat->res, FEAT_MISSING); in kernel_supports()
4991 pr_warn("Detection of kernel %s support failed: %d\n", feat->desc, ret); in kernel_supports()
4992 WRITE_ONCE(feat->res, FEAT_MISSING); in kernel_supports()
4996 return READ_ONCE(feat->res) == FEAT_SUPPORTED; in kernel_supports()
5016 return (map_info.type == map->def.type && in map_is_reuse_compat()
5017 map_info.key_size == map->def.key_size && in map_is_reuse_compat()
5018 map_info.value_size == map->def.value_size && in map_is_reuse_compat()
5019 map_info.max_entries == map->def.max_entries && in map_is_reuse_compat()
5020 map_info.map_flags == map->def.map_flags && in map_is_reuse_compat()
5021 map_info.map_extra == map->map_extra); in map_is_reuse_compat()
5030 pin_fd = bpf_obj_get(map->pin_path); in bpf_object__reuse_map()
5032 err = -errno; in bpf_object__reuse_map()
5033 if (err == -ENOENT) { in bpf_object__reuse_map()
5035 map->pin_path); in bpf_object__reuse_map()
5039 cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg)); in bpf_object__reuse_map()
5041 map->pin_path, cp); in bpf_object__reuse_map()
5047 map->pin_path); in bpf_object__reuse_map()
5049 return -EINVAL; in bpf_object__reuse_map()
5057 map->pinned = true; in bpf_object__reuse_map()
5058 pr_debug("reused pinned map at '%s'\n", map->pin_path); in bpf_object__reuse_map()
5066 enum libbpf_map_type map_type = map->libbpf_type; in bpf_object__populate_internal_map()
5070 if (obj->gen_loader) { in bpf_object__populate_internal_map()
5071 bpf_gen__map_update_elem(obj->gen_loader, map - obj->maps, in bpf_object__populate_internal_map()
5072 map->mmaped, map->def.value_size); in bpf_object__populate_internal_map()
5074 bpf_gen__map_freeze(obj->gen_loader, map - obj->maps); in bpf_object__populate_internal_map()
5077 err = bpf_map_update_elem(map->fd, &zero, map->mmaped, 0); in bpf_object__populate_internal_map()
5079 err = -errno; in bpf_object__populate_internal_map()
5082 map->name, cp); in bpf_object__populate_internal_map()
5086 /* Freeze .rodata and .kconfig map as read-only from syscall side. */ in bpf_object__populate_internal_map()
5088 err = bpf_map_freeze(map->fd); in bpf_object__populate_internal_map()
5090 err = -errno; in bpf_object__populate_internal_map()
5092 pr_warn("Error freezing map(%s) as read-only: %s\n", in bpf_object__populate_internal_map()
5093 map->name, cp); in bpf_object__populate_internal_map()
5105 struct bpf_map_def *def = &map->def; in bpf_object__create_map()
5110 map_name = map->name; in bpf_object__create_map()
5111 create_attr.map_ifindex = map->map_ifindex; in bpf_object__create_map()
5112 create_attr.map_flags = def->map_flags; in bpf_object__create_map()
5113 create_attr.numa_node = map->numa_node; in bpf_object__create_map()
5114 create_attr.map_extra = map->map_extra; in bpf_object__create_map()
5117 create_attr.btf_vmlinux_value_type_id = map->btf_vmlinux_value_type_id; in bpf_object__create_map()
5119 if (obj->btf && btf__fd(obj->btf) >= 0) { in bpf_object__create_map()
5120 create_attr.btf_fd = btf__fd(obj->btf); in bpf_object__create_map()
5121 create_attr.btf_key_type_id = map->btf_key_type_id; in bpf_object__create_map()
5122 create_attr.btf_value_type_id = map->btf_value_type_id; in bpf_object__create_map()
5125 if (bpf_map_type__is_map_in_map(def->type)) { in bpf_object__create_map()
5126 if (map->inner_map) { in bpf_object__create_map()
5127 err = map_set_def_max_entries(map->inner_map); in bpf_object__create_map()
5130 err = bpf_object__create_map(obj, map->inner_map, true); in bpf_object__create_map()
5133 map->name, err); in bpf_object__create_map()
5136 map->inner_map_fd = bpf_map__fd(map->inner_map); in bpf_object__create_map()
5138 if (map->inner_map_fd >= 0) in bpf_object__create_map()
5139 create_attr.inner_map_fd = map->inner_map_fd; in bpf_object__create_map()
5142 switch (def->type) { in bpf_object__create_map()
5159 map->btf_key_type_id = 0; in bpf_object__create_map()
5160 map->btf_value_type_id = 0; in bpf_object__create_map()
5165 if (obj->gen_loader) { in bpf_object__create_map()
5166 bpf_gen__map_create(obj->gen_loader, def->type, map_name, in bpf_object__create_map()
5167 def->key_size, def->value_size, def->max_entries, in bpf_object__create_map()
5168 &create_attr, is_inner ? -1 : map - obj->maps); in bpf_object__create_map()
5170 * This fd == 0 will not be used with any syscall and will be reset to -1 eventually. in bpf_object__create_map()
5172 map->fd = 0; in bpf_object__create_map()
5174 map->fd = bpf_map_create(def->type, map_name, in bpf_object__create_map()
5175 def->key_size, def->value_size, in bpf_object__create_map()
5176 def->max_entries, &create_attr); in bpf_object__create_map()
5178 if (map->fd < 0 && (create_attr.btf_key_type_id || in bpf_object__create_map()
5182 err = -errno; in bpf_object__create_map()
5185 map->name, cp, err); in bpf_object__create_map()
5189 map->btf_key_type_id = 0; in bpf_object__create_map()
5190 map->btf_value_type_id = 0; in bpf_object__create_map()
5191 map->fd = bpf_map_create(def->type, map_name, in bpf_object__create_map()
5192 def->key_size, def->value_size, in bpf_object__create_map()
5193 def->max_entries, &create_attr); in bpf_object__create_map()
5196 err = map->fd < 0 ? -errno : 0; in bpf_object__create_map()
5198 if (bpf_map_type__is_map_in_map(def->type) && map->inner_map) { in bpf_object__create_map()
5199 if (obj->gen_loader) in bpf_object__create_map()
5200 map->inner_map->fd = -1; in bpf_object__create_map()
5201 bpf_map__destroy(map->inner_map); in bpf_object__create_map()
5202 zfree(&map->inner_map); in bpf_object__create_map()
5214 for (i = 0; i < map->init_slots_sz; i++) { in init_map_in_map_slots()
5215 if (!map->init_slots[i]) in init_map_in_map_slots()
5218 targ_map = map->init_slots[i]; in init_map_in_map_slots()
5221 if (obj->gen_loader) { in init_map_in_map_slots()
5222 bpf_gen__populate_outer_map(obj->gen_loader, in init_map_in_map_slots()
5223 map - obj->maps, i, in init_map_in_map_slots()
5224 targ_map - obj->maps); in init_map_in_map_slots()
5226 err = bpf_map_update_elem(map->fd, &i, &fd, 0); in init_map_in_map_slots()
5229 err = -errno; in init_map_in_map_slots()
5231 map->name, i, targ_map->name, fd, err); in init_map_in_map_slots()
5235 map->name, i, targ_map->name, fd); in init_map_in_map_slots()
5238 zfree(&map->init_slots); in init_map_in_map_slots()
5239 map->init_slots_sz = 0; in init_map_in_map_slots()
5250 if (obj->gen_loader) in init_prog_array_slots()
5251 return -ENOTSUP; in init_prog_array_slots()
5253 for (i = 0; i < map->init_slots_sz; i++) { in init_prog_array_slots()
5254 if (!map->init_slots[i]) in init_prog_array_slots()
5257 targ_prog = map->init_slots[i]; in init_prog_array_slots()
5260 err = bpf_map_update_elem(map->fd, &i, &fd, 0); in init_prog_array_slots()
5262 err = -errno; in init_prog_array_slots()
5264 map->name, i, targ_prog->name, fd, err); in init_prog_array_slots()
5268 map->name, i, targ_prog->name, fd); in init_prog_array_slots()
5271 zfree(&map->init_slots); in init_prog_array_slots()
5272 map->init_slots_sz = 0; in init_prog_array_slots()
5282 for (i = 0; i < obj->nr_maps; i++) { in bpf_object_init_prog_arrays()
5283 map = &obj->maps[i]; in bpf_object_init_prog_arrays()
5285 if (!map->init_slots_sz || map->def.type != BPF_MAP_TYPE_PROG_ARRAY) in bpf_object_init_prog_arrays()
5290 zclose(map->fd); in bpf_object_init_prog_arrays()
5299 if (map->def.type == BPF_MAP_TYPE_PERF_EVENT_ARRAY && !map->def.max_entries) { in map_set_def_max_entries()
5305 map->name, nr_cpus); in map_set_def_max_entries()
5308 pr_debug("map '%s': setting size to %d\n", map->name, nr_cpus); in map_set_def_max_entries()
5309 map->def.max_entries = nr_cpus; in map_set_def_max_entries()
5324 for (i = 0; i < obj->nr_maps; i++) { in bpf_object__create_maps()
5325 map = &obj->maps[i]; in bpf_object__create_maps()
5329 * loading, if we detect that at least one of the to-be-loaded in bpf_object__create_maps()
5334 * but also it allows to have CO-RE applications that use in bpf_object__create_maps()
5336 * If those global variable-using programs are not loaded at in bpf_object__create_maps()
5342 map->autocreate = false; in bpf_object__create_maps()
5344 if (!map->autocreate) { in bpf_object__create_maps()
5345 pr_debug("map '%s': skipped auto-creating...\n", map->name); in bpf_object__create_maps()
5355 if (map->pin_path) { in bpf_object__create_maps()
5359 map->name); in bpf_object__create_maps()
5362 if (retried && map->fd < 0) { in bpf_object__create_maps()
5364 map->name); in bpf_object__create_maps()
5365 err = -ENOENT; in bpf_object__create_maps()
5370 if (map->fd >= 0) { in bpf_object__create_maps()
5372 map->name, map->fd); in bpf_object__create_maps()
5379 map->name, map->fd); in bpf_object__create_maps()
5384 zclose(map->fd); in bpf_object__create_maps()
5389 if (map->init_slots_sz && map->def.type != BPF_MAP_TYPE_PROG_ARRAY) { in bpf_object__create_maps()
5392 zclose(map->fd); in bpf_object__create_maps()
5398 if (map->pin_path && !map->pinned) { in bpf_object__create_maps()
5401 zclose(map->fd); in bpf_object__create_maps()
5402 if (!retried && err == -EEXIST) { in bpf_object__create_maps()
5406 pr_warn("map '%s': failed to auto-pin at '%s': %d\n", in bpf_object__create_maps()
5407 map->name, map->pin_path, err); in bpf_object__create_maps()
5417 pr_warn("map '%s': failed to create: %s(%d)\n", map->name, cp, err); in bpf_object__create_maps()
5420 zclose(obj->maps[j].fd); in bpf_object__create_maps()
5434 * underscore is ignored by BPF CO-RE relocation during relocation matching.
5441 for (i = n - 5; i >= 0; i--) { in bpf_core_essential_name_len()
5453 free(cands->cands); in bpf_core_free_cands()
5470 local_t = btf__type_by_id(local_cand->btf, local_cand->id); in bpf_core_add_cands()
5471 local_name = btf__str_by_offset(local_cand->btf, local_t->name_off); in bpf_core_add_cands()
5479 targ_name = btf__name_by_offset(targ_btf, t->name_off); in bpf_core_add_cands()
5490 pr_debug("CO-RE relocating [%d] %s %s: found target candidate [%d] %s %s in [%s]\n", in bpf_core_add_cands()
5491 local_cand->id, btf_kind_str(local_t), in bpf_core_add_cands()
5494 new_cands = libbpf_reallocarray(cands->cands, cands->len + 1, in bpf_core_add_cands()
5495 sizeof(*cands->cands)); in bpf_core_add_cands()
5497 return -ENOMEM; in bpf_core_add_cands()
5499 cand = &new_cands[cands->len]; in bpf_core_add_cands()
5500 cand->btf = targ_btf; in bpf_core_add_cands()
5501 cand->id = i; in bpf_core_add_cands()
5503 cands->cands = new_cands; in bpf_core_add_cands()
5504 cands->len++; in bpf_core_add_cands()
5518 if (obj->btf_modules_loaded) in load_module_btfs()
5521 if (obj->gen_loader) in load_module_btfs()
5525 obj->btf_modules_loaded = true; in load_module_btfs()
5540 err = -errno; in load_module_btfs()
5549 err = -errno; in load_module_btfs()
5561 err = -errno; in load_module_btfs()
5566 /* ignore non-module BTFs */ in load_module_btfs()
5572 btf = btf_get_from_fd(fd, obj->btf_vmlinux); in load_module_btfs()
5580 err = libbpf_ensure_mem((void **)&obj->btf_modules, &obj->btf_module_cap, in load_module_btfs()
5581 sizeof(*obj->btf_modules), obj->btf_module_cnt + 1); in load_module_btfs()
5585 mod_btf = &obj->btf_modules[obj->btf_module_cnt++]; in load_module_btfs()
5587 mod_btf->btf = btf; in load_module_btfs()
5588 mod_btf->id = id; in load_module_btfs()
5589 mod_btf->fd = fd; in load_module_btfs()
5590 mod_btf->name = strdup(name); in load_module_btfs()
5591 if (!mod_btf->name) { in load_module_btfs()
5592 err = -ENOMEM; in load_module_btfs()
5620 return ERR_PTR(-EINVAL); in bpf_core_find_cands()
5622 local_name = btf__name_by_offset(local_btf, local_t->name_off); in bpf_core_find_cands()
5624 return ERR_PTR(-EINVAL); in bpf_core_find_cands()
5629 return ERR_PTR(-ENOMEM); in bpf_core_find_cands()
5632 main_btf = obj->btf_vmlinux_override ?: obj->btf_vmlinux; in bpf_core_find_cands()
5638 if (cands->len) in bpf_core_find_cands()
5642 if (obj->btf_vmlinux_override) in bpf_core_find_cands()
5650 for (i = 0; i < obj->btf_module_cnt; i++) { in bpf_core_find_cands()
5652 obj->btf_modules[i].btf, in bpf_core_find_cands()
5653 obj->btf_modules[i].name, in bpf_core_find_cands()
5654 btf__type_cnt(obj->btf_vmlinux), in bpf_core_find_cands()
5667 * type-based CO-RE relocations and follow slightly different rules than
5668 * field-based relocations. This function assumes that root types were already
5669 * checked for name match. Beyond that initial root-level name check, names
5671 * - any two STRUCTs/UNIONs/FWDs/ENUMs/INTs are considered compatible, but
5674 * - for ENUMs, the size is ignored;
5675 * - for INT, size and signedness are ignored;
5676 * - for ARRAY, dimensionality is ignored, element types are checked for
5678 * - CONST/VOLATILE/RESTRICT modifiers are ignored;
5679 * - TYPEDEFs/PTRs are compatible if types they pointing to are compatible;
5680 * - FUNC_PROTOs are compatible if they have compatible signature: same
5683 * more experience with using BPF CO-RE relocations.
5712 relos = libbpf_reallocarray(prog->reloc_desc, in record_relo_core()
5713 prog->nr_reloc + 1, sizeof(*relos)); in record_relo_core()
5715 return -ENOMEM; in record_relo_core()
5716 relo = &relos[prog->nr_reloc]; in record_relo_core()
5717 relo->type = RELO_CORE; in record_relo_core()
5718 relo->insn_idx = insn_idx; in record_relo_core()
5719 relo->core_relo = core_relo; in record_relo_core()
5720 prog->reloc_desc = relos; in record_relo_core()
5721 prog->nr_reloc++; in record_relo_core()
5730 for (i = 0; i < prog->nr_reloc; i++) { in find_relo_core()
5731 relo = &prog->reloc_desc[i]; in find_relo_core()
5732 if (relo->type != RELO_CORE || relo->insn_idx != insn_idx) in find_relo_core()
5735 return relo->core_relo; in find_relo_core()
5750 const char *prog_name = prog->name; in bpf_core_resolve_relo()
5753 __u32 local_id = relo->type_id; in bpf_core_resolve_relo()
5758 return -EINVAL; in bpf_core_resolve_relo()
5760 local_name = btf__name_by_offset(local_btf, local_type->name_off); in bpf_core_resolve_relo()
5762 return -EINVAL; in bpf_core_resolve_relo()
5764 if (relo->kind != BPF_CORE_TYPE_ID_LOCAL && in bpf_core_resolve_relo()
5766 cands = bpf_core_find_cands(prog->obj, local_btf, local_id); in bpf_core_resolve_relo()
5798 if (obj->btf_ext->core_relo_info.len == 0) in bpf_object__relocate_core()
5802 obj->btf_vmlinux_override = btf__parse(targ_btf_path, NULL); in bpf_object__relocate_core()
5803 err = libbpf_get_error(obj->btf_vmlinux_override); in bpf_object__relocate_core()
5816 seg = &obj->btf_ext->core_relo_info; in bpf_object__relocate_core()
5819 sec_idx = seg->sec_idxs[sec_num]; in bpf_object__relocate_core()
5822 sec_name = btf__name_by_offset(obj->btf, sec->sec_name_off); in bpf_object__relocate_core()
5824 err = -EINVAL; in bpf_object__relocate_core()
5828 pr_debug("sec '%s': found %d CO-RE relocations\n", sec_name, sec->num_info); in bpf_object__relocate_core()
5831 if (rec->insn_off % BPF_INSN_SZ) in bpf_object__relocate_core()
5832 return -EINVAL; in bpf_object__relocate_core()
5833 insn_idx = rec->insn_off / BPF_INSN_SZ; in bpf_object__relocate_core()
5840 * This is similar to what x86-64 linker does for relocations. in bpf_object__relocate_core()
5844 …pr_debug("sec '%s': skipping CO-RE relocation #%d for insn #%d belonging to eliminated weak subpro… in bpf_object__relocate_core()
5848 /* no need to apply CO-RE relocation if the program is in bpf_object__relocate_core()
5851 if (!prog->autoload) in bpf_object__relocate_core()
5855 * program's frame of reference; (sub-)program code is not yet in bpf_object__relocate_core()
5856 * relocated, so it's enough to just subtract in-section offset in bpf_object__relocate_core()
5858 insn_idx = insn_idx - prog->sec_insn_off; in bpf_object__relocate_core()
5859 if (insn_idx >= prog->insns_cnt) in bpf_object__relocate_core()
5860 return -EINVAL; in bpf_object__relocate_core()
5861 insn = &prog->insns[insn_idx]; in bpf_object__relocate_core()
5866 prog->name, i, err); in bpf_object__relocate_core()
5870 if (prog->obj->gen_loader) in bpf_object__relocate_core()
5873 err = bpf_core_resolve_relo(prog, rec, i, obj->btf, cand_cache, &targ_res); in bpf_object__relocate_core()
5876 prog->name, i, err); in bpf_object__relocate_core()
5880 err = bpf_core_patch_insn(prog->name, insn, insn_idx, rec, i, &targ_res); in bpf_object__relocate_core()
5883 prog->name, i, insn_idx, err); in bpf_object__relocate_core()
5890 /* obj->btf_vmlinux and module BTFs are freed after object load */ in bpf_object__relocate_core()
5891 btf__free(obj->btf_vmlinux_override); in bpf_object__relocate_core()
5892 obj->btf_vmlinux_override = NULL; in bpf_object__relocate_core()
5896 bpf_core_free_cands(entry->pvalue); in bpf_object__relocate_core()
5914 prog->name, relo_idx, insn_idx, map_idx, map->name); in poison_map_ldimm64()
5918 insn->code = BPF_JMP | BPF_CALL; in poison_map_ldimm64()
5919 insn->dst_reg = 0; in poison_map_ldimm64()
5920 insn->src_reg = 0; in poison_map_ldimm64()
5921 insn->off = 0; in poison_map_ldimm64()
5925 * where lower 123 is map index into obj->maps[] array in poison_map_ldimm64()
5927 insn->imm = POISON_LDIMM64_MAP_BASE + map_idx; in poison_map_ldimm64()
5942 prog->name, relo_idx, insn_idx, ext->name); in poison_kfunc_call()
5945 insn->code = BPF_JMP | BPF_CALL; in poison_kfunc_call()
5946 insn->dst_reg = 0; in poison_kfunc_call()
5947 insn->src_reg = 0; in poison_kfunc_call()
5948 insn->off = 0; in poison_kfunc_call()
5952 * where lower 123 is extern index into obj->externs[] array in poison_kfunc_call()
5954 insn->imm = POISON_CALL_KFUNC_BASE + ext_idx; in poison_kfunc_call()
5958 * - map references;
5959 * - global variable references;
5960 * - extern references.
5967 for (i = 0; i < prog->nr_reloc; i++) { in bpf_object__relocate_data()
5968 struct reloc_desc *relo = &prog->reloc_desc[i]; in bpf_object__relocate_data()
5969 struct bpf_insn *insn = &prog->insns[relo->insn_idx]; in bpf_object__relocate_data()
5973 switch (relo->type) { in bpf_object__relocate_data()
5975 map = &obj->maps[relo->map_idx]; in bpf_object__relocate_data()
5976 if (obj->gen_loader) { in bpf_object__relocate_data()
5978 insn[0].imm = relo->map_idx; in bpf_object__relocate_data()
5979 } else if (map->autocreate) { in bpf_object__relocate_data()
5981 insn[0].imm = map->fd; in bpf_object__relocate_data()
5983 poison_map_ldimm64(prog, i, relo->insn_idx, insn, in bpf_object__relocate_data()
5984 relo->map_idx, map); in bpf_object__relocate_data()
5988 map = &obj->maps[relo->map_idx]; in bpf_object__relocate_data()
5989 insn[1].imm = insn[0].imm + relo->sym_off; in bpf_object__relocate_data()
5990 if (obj->gen_loader) { in bpf_object__relocate_data()
5992 insn[0].imm = relo->map_idx; in bpf_object__relocate_data()
5993 } else if (map->autocreate) { in bpf_object__relocate_data()
5995 insn[0].imm = map->fd; in bpf_object__relocate_data()
5997 poison_map_ldimm64(prog, i, relo->insn_idx, insn, in bpf_object__relocate_data()
5998 relo->map_idx, map); in bpf_object__relocate_data()
6002 ext = &obj->externs[relo->ext_idx]; in bpf_object__relocate_data()
6003 if (ext->type == EXT_KCFG) { in bpf_object__relocate_data()
6004 if (obj->gen_loader) { in bpf_object__relocate_data()
6006 insn[0].imm = obj->kconfig_map_idx; in bpf_object__relocate_data()
6009 insn[0].imm = obj->maps[obj->kconfig_map_idx].fd; in bpf_object__relocate_data()
6011 insn[1].imm = ext->kcfg.data_off; in bpf_object__relocate_data()
6013 if (ext->ksym.type_id && ext->is_set) { /* typed ksyms */ in bpf_object__relocate_data()
6015 insn[0].imm = ext->ksym.kernel_btf_id; in bpf_object__relocate_data()
6016 insn[1].imm = ext->ksym.kernel_btf_obj_fd; in bpf_object__relocate_data()
6018 insn[0].imm = (__u32)ext->ksym.addr; in bpf_object__relocate_data()
6019 insn[1].imm = ext->ksym.addr >> 32; in bpf_object__relocate_data()
6024 ext = &obj->externs[relo->ext_idx]; in bpf_object__relocate_data()
6026 if (ext->is_set) { in bpf_object__relocate_data()
6027 insn[0].imm = ext->ksym.kernel_btf_id; in bpf_object__relocate_data()
6028 insn[0].off = ext->ksym.btf_fd_idx; in bpf_object__relocate_data()
6030 poison_kfunc_call(prog, i, relo->insn_idx, insn, in bpf_object__relocate_data()
6031 relo->ext_idx, ext); in bpf_object__relocate_data()
6037 prog->name, i); in bpf_object__relocate_data()
6038 return -EINVAL; in bpf_object__relocate_data()
6050 prog->name, i, relo->type); in bpf_object__relocate_data()
6051 return -EINVAL; in bpf_object__relocate_data()
6072 sec_idx = ext_info->sec_idxs[sec_num]; in adjust_prog_btf_ext_info()
6074 if (prog->sec_idx != sec_idx) in adjust_prog_btf_ext_info()
6080 if (insn_off < prog->sec_insn_off) in adjust_prog_btf_ext_info()
6082 if (insn_off >= prog->sec_insn_off + prog->sec_insn_cnt) in adjust_prog_btf_ext_info()
6087 copy_end = rec + ext_info->rec_size; in adjust_prog_btf_ext_info()
6091 return -ENOENT; in adjust_prog_btf_ext_info()
6093 /* append func/line info of a given (sub-)program to the main in adjust_prog_btf_ext_info()
6096 old_sz = (size_t)(*prog_rec_cnt) * ext_info->rec_size; in adjust_prog_btf_ext_info()
6097 new_sz = old_sz + (copy_end - copy_start); in adjust_prog_btf_ext_info()
6100 return -ENOMEM; in adjust_prog_btf_ext_info()
6102 *prog_rec_cnt = new_sz / ext_info->rec_size; in adjust_prog_btf_ext_info()
6103 memcpy(new_prog_info + old_sz, copy_start, copy_end - copy_start); in adjust_prog_btf_ext_info()
6105 /* Kernel instruction offsets are in units of 8-byte in adjust_prog_btf_ext_info()
6111 off_adj = prog->sub_insn_off - prog->sec_insn_off; in adjust_prog_btf_ext_info()
6114 for (; rec < rec_end; rec += ext_info->rec_size) { in adjust_prog_btf_ext_info()
6119 *prog_rec_sz = ext_info->rec_size; in adjust_prog_btf_ext_info()
6123 return -ENOENT; in adjust_prog_btf_ext_info()
6136 if (!obj->btf_ext || !kernel_supports(obj, FEAT_BTF_FUNC)) in reloc_prog_func_and_line_info()
6142 if (main_prog != prog && !main_prog->func_info) in reloc_prog_func_and_line_info()
6145 err = adjust_prog_btf_ext_info(obj, prog, &obj->btf_ext->func_info, in reloc_prog_func_and_line_info()
6146 &main_prog->func_info, in reloc_prog_func_and_line_info()
6147 &main_prog->func_info_cnt, in reloc_prog_func_and_line_info()
6148 &main_prog->func_info_rec_size); in reloc_prog_func_and_line_info()
6150 if (err != -ENOENT) { in reloc_prog_func_and_line_info()
6152 prog->name, err); in reloc_prog_func_and_line_info()
6155 if (main_prog->func_info) { in reloc_prog_func_and_line_info()
6160 pr_warn("prog '%s': missing .BTF.ext function info.\n", prog->name); in reloc_prog_func_and_line_info()
6165 prog->name); in reloc_prog_func_and_line_info()
6170 if (main_prog != prog && !main_prog->line_info) in reloc_prog_func_and_line_info()
6173 err = adjust_prog_btf_ext_info(obj, prog, &obj->btf_ext->line_info, in reloc_prog_func_and_line_info()
6174 &main_prog->line_info, in reloc_prog_func_and_line_info()
6175 &main_prog->line_info_cnt, in reloc_prog_func_and_line_info()
6176 &main_prog->line_info_rec_size); in reloc_prog_func_and_line_info()
6178 if (err != -ENOENT) { in reloc_prog_func_and_line_info()
6180 prog->name, err); in reloc_prog_func_and_line_info()
6183 if (main_prog->line_info) { in reloc_prog_func_and_line_info()
6188 pr_warn("prog '%s': missing .BTF.ext line info.\n", prog->name); in reloc_prog_func_and_line_info()
6193 prog->name); in reloc_prog_func_and_line_info()
6203 if (insn_idx == relo->insn_idx) in cmp_relo_by_insn_idx()
6205 return insn_idx < relo->insn_idx ? -1 : 1; in cmp_relo_by_insn_idx()
6210 if (!prog->nr_reloc) in find_prog_insn_relo()
6212 return bsearch(&insn_idx, prog->reloc_desc, prog->nr_reloc, in find_prog_insn_relo()
6213 sizeof(*prog->reloc_desc), cmp_relo_by_insn_idx); in find_prog_insn_relo()
6218 int new_cnt = main_prog->nr_reloc + subprog->nr_reloc; in append_subprog_relos()
6224 relos = libbpf_reallocarray(main_prog->reloc_desc, new_cnt, sizeof(*relos)); in append_subprog_relos()
6230 return -ENOMEM; in append_subprog_relos()
6231 if (subprog->nr_reloc) in append_subprog_relos()
6232 memcpy(relos + main_prog->nr_reloc, subprog->reloc_desc, in append_subprog_relos()
6233 sizeof(*relos) * subprog->nr_reloc); in append_subprog_relos()
6235 for (i = main_prog->nr_reloc; i < new_cnt; i++) in append_subprog_relos()
6236 relos[i].insn_idx += subprog->sub_insn_off; in append_subprog_relos()
6240 main_prog->reloc_desc = relos; in append_subprog_relos()
6241 main_prog->nr_reloc = new_cnt; in append_subprog_relos()
6259 for (insn_idx = 0; insn_idx < prog->sec_insn_cnt; insn_idx++) { in bpf_object__reloc_code()
6260 insn = &main_prog->insns[prog->sub_insn_off + insn_idx]; in bpf_object__reloc_code()
6265 if (relo && relo->type == RELO_EXTERN_CALL) in bpf_object__reloc_code()
6270 if (relo && relo->type != RELO_CALL && relo->type != RELO_SUBPROG_ADDR) { in bpf_object__reloc_code()
6272 prog->name, insn_idx, relo->type); in bpf_object__reloc_code()
6273 return -LIBBPF_ERRNO__RELOC; in bpf_object__reloc_code()
6276 /* sub-program instruction index is a combination of in bpf_object__reloc_code()
6279 * call always has imm = -1, but for static functions in bpf_object__reloc_code()
6280 * relocation is against STT_SECTION and insn->imm in bpf_object__reloc_code()
6283 * for subprog addr relocation, the relo->sym_off + insn->imm is in bpf_object__reloc_code()
6286 if (relo->type == RELO_CALL) in bpf_object__reloc_code()
6287 sub_insn_idx = relo->sym_off / BPF_INSN_SZ + insn->imm + 1; in bpf_object__reloc_code()
6289 sub_insn_idx = (relo->sym_off + insn->imm) / BPF_INSN_SZ; in bpf_object__reloc_code()
6296 prog->name, insn_idx); in bpf_object__reloc_code()
6297 return -LIBBPF_ERRNO__RELOC; in bpf_object__reloc_code()
6302 * offset necessary, insns->imm is relative to in bpf_object__reloc_code()
6305 sub_insn_idx = prog->sec_insn_off + insn_idx + insn->imm + 1; in bpf_object__reloc_code()
6308 /* we enforce that sub-programs should be in .text section */ in bpf_object__reloc_code()
6309 subprog = find_prog_by_sec_insn(obj, obj->efile.text_shndx, sub_insn_idx); in bpf_object__reloc_code()
6311 pr_warn("prog '%s': no .text section found yet sub-program call exists\n", in bpf_object__reloc_code()
6312 prog->name); in bpf_object__reloc_code()
6313 return -LIBBPF_ERRNO__RELOC; in bpf_object__reloc_code()
6319 * - append it at the end of main program's instructions blog; in bpf_object__reloc_code()
6320 * - process is recursively, while current program is put on hold; in bpf_object__reloc_code()
6321 * - if that subprogram calls some other not yet processes in bpf_object__reloc_code()
6326 if (subprog->sub_insn_off == 0) { in bpf_object__reloc_code()
6327 subprog->sub_insn_off = main_prog->insns_cnt; in bpf_object__reloc_code()
6329 new_cnt = main_prog->insns_cnt + subprog->insns_cnt; in bpf_object__reloc_code()
6330 insns = libbpf_reallocarray(main_prog->insns, new_cnt, sizeof(*insns)); in bpf_object__reloc_code()
6332 pr_warn("prog '%s': failed to realloc prog code\n", main_prog->name); in bpf_object__reloc_code()
6333 return -ENOMEM; in bpf_object__reloc_code()
6335 main_prog->insns = insns; in bpf_object__reloc_code()
6336 main_prog->insns_cnt = new_cnt; in bpf_object__reloc_code()
6338 memcpy(main_prog->insns + subprog->sub_insn_off, subprog->insns, in bpf_object__reloc_code()
6339 subprog->insns_cnt * sizeof(*insns)); in bpf_object__reloc_code()
6341 pr_debug("prog '%s': added %zu insns from sub-prog '%s'\n", in bpf_object__reloc_code()
6342 main_prog->name, subprog->insns_cnt, subprog->name); in bpf_object__reloc_code()
6353 /* main_prog->insns memory could have been re-allocated, so in bpf_object__reloc_code()
6356 insn = &main_prog->insns[prog->sub_insn_off + insn_idx]; in bpf_object__reloc_code()
6363 insn->imm = subprog->sub_insn_off - (prog->sub_insn_off + insn_idx) - 1; in bpf_object__reloc_code()
6366 prog->name, insn_idx, insn->imm, subprog->name, subprog->sub_insn_off); in bpf_object__reloc_code()
6373 * Relocate sub-program calls.
6375 * Algorithm operates as follows. Each entry-point BPF program (referred to as
6376 * main prog) is processed separately. For each subprog (non-entry functions,
6385 * is into a subprog that hasn't been processed (i.e., subprog->sub_insn_off
6401 * subprog->sub_insn_off as zero at all times and won't be appended to current
6410 * +--------+ +-------+
6411 * | v v |
6412 * +--+---+ +--+-+-+ +---+--+
6414 * +--+---+ +------+ +---+--+
6417 * +---+-------+ +------+----+
6419 * +-----------+ +-----------+
6424 * +-----------+------+
6426 * +-----------+------+
6431 * +-----------+------+------+
6433 * +-----------+------+------+
6442 * +-----------+------+
6444 * +-----------+------+
6447 * +-----------+------+------+
6449 * +-----------+------+------+
6462 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__relocate_calls()
6463 subprog = &obj->programs[i]; in bpf_object__relocate_calls()
6467 subprog->sub_insn_off = 0; in bpf_object__relocate_calls()
6484 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__free_relocs()
6485 prog = &obj->programs[i]; in bpf_object__free_relocs()
6486 zfree(&prog->reloc_desc); in bpf_object__free_relocs()
6487 prog->nr_reloc = 0; in bpf_object__free_relocs()
6496 if (a->insn_idx != b->insn_idx) in cmp_relocs()
6497 return a->insn_idx < b->insn_idx ? -1 : 1; in cmp_relocs()
6500 if (a->type != b->type) in cmp_relocs()
6501 return a->type < b->type ? -1 : 1; in cmp_relocs()
6510 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__sort_relos()
6511 struct bpf_program *p = &obj->programs[i]; in bpf_object__sort_relos()
6513 if (!p->nr_reloc) in bpf_object__sort_relos()
6516 qsort(p->reloc_desc, p->nr_reloc, sizeof(*p->reloc_desc), cmp_relocs); in bpf_object__sort_relos()
6527 if (obj->btf_ext) { in bpf_object__relocate()
6530 pr_warn("failed to perform CO-RE relocations: %d\n", in bpf_object__relocate()
6537 /* Before relocating calls pre-process relocations and mark in bpf_object__relocate()
6544 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__relocate()
6545 prog = &obj->programs[i]; in bpf_object__relocate()
6546 for (j = 0; j < prog->nr_reloc; j++) { in bpf_object__relocate()
6547 struct reloc_desc *relo = &prog->reloc_desc[j]; in bpf_object__relocate()
6548 struct bpf_insn *insn = &prog->insns[relo->insn_idx]; in bpf_object__relocate()
6551 if (relo->type == RELO_SUBPROG_ADDR) in bpf_object__relocate()
6563 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__relocate()
6564 prog = &obj->programs[i]; in bpf_object__relocate()
6565 /* sub-program's sub-calls are relocated within the context of in bpf_object__relocate()
6570 if (!prog->autoload) in bpf_object__relocate()
6576 prog->name, err); in bpf_object__relocate()
6581 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__relocate()
6582 prog = &obj->programs[i]; in bpf_object__relocate()
6585 if (!prog->autoload) in bpf_object__relocate()
6590 prog->name, err); in bpf_object__relocate()
6618 if (!obj->efile.btf_maps_sec_btf_id || !obj->btf) in bpf_object__collect_map_relos()
6619 return -EINVAL; in bpf_object__collect_map_relos()
6620 sec = btf__type_by_id(obj->btf, obj->efile.btf_maps_sec_btf_id); in bpf_object__collect_map_relos()
6622 return -EINVAL; in bpf_object__collect_map_relos()
6624 nrels = shdr->sh_size / shdr->sh_entsize; in bpf_object__collect_map_relos()
6629 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_map_relos()
6632 sym = elf_sym_by_idx(obj, ELF64_R_SYM(rel->r_info)); in bpf_object__collect_map_relos()
6635 i, (size_t)ELF64_R_SYM(rel->r_info)); in bpf_object__collect_map_relos()
6636 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_map_relos()
6638 name = elf_sym_str(obj, sym->st_name) ?: "<?>"; in bpf_object__collect_map_relos()
6640 pr_debug(".maps relo #%d: for %zd value %zd rel->r_offset %zu name %d ('%s')\n", in bpf_object__collect_map_relos()
6641 i, (ssize_t)(rel->r_info >> 32), (size_t)sym->st_value, in bpf_object__collect_map_relos()
6642 (size_t)rel->r_offset, sym->st_name, name); in bpf_object__collect_map_relos()
6644 for (j = 0; j < obj->nr_maps; j++) { in bpf_object__collect_map_relos()
6645 map = &obj->maps[j]; in bpf_object__collect_map_relos()
6646 if (map->sec_idx != obj->efile.btf_maps_shndx) in bpf_object__collect_map_relos()
6649 vi = btf_var_secinfos(sec) + map->btf_var_idx; in bpf_object__collect_map_relos()
6650 if (vi->offset <= rel->r_offset && in bpf_object__collect_map_relos()
6651 rel->r_offset + bpf_ptr_sz <= vi->offset + vi->size) in bpf_object__collect_map_relos()
6654 if (j == obj->nr_maps) { in bpf_object__collect_map_relos()
6655 pr_warn(".maps relo #%d: cannot find map '%s' at rel->r_offset %zu\n", in bpf_object__collect_map_relos()
6656 i, name, (size_t)rel->r_offset); in bpf_object__collect_map_relos()
6657 return -EINVAL; in bpf_object__collect_map_relos()
6660 is_map_in_map = bpf_map_type__is_map_in_map(map->def.type); in bpf_object__collect_map_relos()
6661 is_prog_array = map->def.type == BPF_MAP_TYPE_PROG_ARRAY; in bpf_object__collect_map_relos()
6664 if (sym->st_shndx != obj->efile.btf_maps_shndx) { in bpf_object__collect_map_relos()
6665 pr_warn(".maps relo #%d: '%s' isn't a BTF-defined map\n", in bpf_object__collect_map_relos()
6667 return -LIBBPF_ERRNO__RELOC; in bpf_object__collect_map_relos()
6669 if (map->def.type == BPF_MAP_TYPE_HASH_OF_MAPS && in bpf_object__collect_map_relos()
6670 map->def.key_size != sizeof(int)) { in bpf_object__collect_map_relos()
6671 pr_warn(".maps relo #%d: hash-of-maps '%s' should have key size %zu.\n", in bpf_object__collect_map_relos()
6672 i, map->name, sizeof(int)); in bpf_object__collect_map_relos()
6673 return -EINVAL; in bpf_object__collect_map_relos()
6679 return -ESRCH; in bpf_object__collect_map_relos()
6686 return -ESRCH; in bpf_object__collect_map_relos()
6688 if (targ_prog->sec_idx != sym->st_shndx || in bpf_object__collect_map_relos()
6689 targ_prog->sec_insn_off * 8 != sym->st_value || in bpf_object__collect_map_relos()
6691 pr_warn(".maps relo #%d: '%s' isn't an entry-point program\n", in bpf_object__collect_map_relos()
6693 return -LIBBPF_ERRNO__RELOC; in bpf_object__collect_map_relos()
6696 return -EINVAL; in bpf_object__collect_map_relos()
6699 var = btf__type_by_id(obj->btf, vi->type); in bpf_object__collect_map_relos()
6700 def = skip_mods_and_typedefs(obj->btf, var->type, NULL); in bpf_object__collect_map_relos()
6702 return -EINVAL; in bpf_object__collect_map_relos()
6703 member = btf_members(def) + btf_vlen(def) - 1; in bpf_object__collect_map_relos()
6704 mname = btf__name_by_offset(obj->btf, member->name_off); in bpf_object__collect_map_relos()
6706 return -EINVAL; in bpf_object__collect_map_relos()
6708 moff = btf_member_bit_offset(def, btf_vlen(def) - 1) / 8; in bpf_object__collect_map_relos()
6709 if (rel->r_offset - vi->offset < moff) in bpf_object__collect_map_relos()
6710 return -EINVAL; in bpf_object__collect_map_relos()
6712 moff = rel->r_offset - vi->offset - moff; in bpf_object__collect_map_relos()
6717 return -EINVAL; in bpf_object__collect_map_relos()
6719 if (moff >= map->init_slots_sz) { in bpf_object__collect_map_relos()
6721 tmp = libbpf_reallocarray(map->init_slots, new_sz, host_ptr_sz); in bpf_object__collect_map_relos()
6723 return -ENOMEM; in bpf_object__collect_map_relos()
6724 map->init_slots = tmp; in bpf_object__collect_map_relos()
6725 memset(map->init_slots + map->init_slots_sz, 0, in bpf_object__collect_map_relos()
6726 (new_sz - map->init_slots_sz) * host_ptr_sz); in bpf_object__collect_map_relos()
6727 map->init_slots_sz = new_sz; in bpf_object__collect_map_relos()
6729 map->init_slots[moff] = is_map_in_map ? (void *)targ_map : (void *)targ_prog; in bpf_object__collect_map_relos()
6732 i, map->name, moff, type, name); in bpf_object__collect_map_relos()
6742 for (i = 0; i < obj->efile.sec_cnt; i++) { in bpf_object__collect_relos()
6743 struct elf_sec_desc *sec_desc = &obj->efile.secs[i]; in bpf_object__collect_relos()
6748 if (sec_desc->sec_type != SEC_RELO) in bpf_object__collect_relos()
6751 shdr = sec_desc->shdr; in bpf_object__collect_relos()
6752 data = sec_desc->data; in bpf_object__collect_relos()
6753 idx = shdr->sh_info; in bpf_object__collect_relos()
6755 if (shdr->sh_type != SHT_REL) { in bpf_object__collect_relos()
6757 return -LIBBPF_ERRNO__INTERNAL; in bpf_object__collect_relos()
6760 if (idx == obj->efile.st_ops_shndx || idx == obj->efile.st_ops_link_shndx) in bpf_object__collect_relos()
6762 else if (idx == obj->efile.btf_maps_shndx) in bpf_object__collect_relos()
6776 if (BPF_CLASS(insn->code) == BPF_JMP && in insn_is_helper_call()
6777 BPF_OP(insn->code) == BPF_CALL && in insn_is_helper_call()
6778 BPF_SRC(insn->code) == BPF_K && in insn_is_helper_call()
6779 insn->src_reg == 0 && in insn_is_helper_call()
6780 insn->dst_reg == 0) { in insn_is_helper_call()
6781 *func_id = insn->imm; in insn_is_helper_call()
6789 struct bpf_insn *insn = prog->insns; in bpf_object__sanitize_prog()
6793 if (obj->gen_loader) in bpf_object__sanitize_prog()
6796 for (i = 0; i < prog->insns_cnt; i++, insn++) { in bpf_object__sanitize_prog()
6808 insn->imm = BPF_FUNC_probe_read; in bpf_object__sanitize_prog()
6813 insn->imm = BPF_FUNC_probe_read_str; in bpf_object__sanitize_prog()
6825 /* this is called as prog->sec_def->prog_prepare_load_fn for libbpf-supported sec_defs */
6832 if ((def & SEC_EXP_ATTACH_OPT) && !kernel_supports(prog->obj, FEAT_EXP_ATTACH_TYPE)) in libbpf_prepare_prog_load()
6833 opts->expected_attach_type = 0; in libbpf_prepare_prog_load()
6836 opts->prog_flags |= BPF_F_SLEEPABLE; in libbpf_prepare_prog_load()
6838 if (prog->type == BPF_PROG_TYPE_XDP && (def & SEC_XDP_FRAGS)) in libbpf_prepare_prog_load()
6839 opts->prog_flags |= BPF_F_XDP_HAS_FRAGS; in libbpf_prepare_prog_load()
6842 if ((def & SEC_USDT) && kernel_supports(prog->obj, FEAT_UPROBE_MULTI_LINK)) { in libbpf_prepare_prog_load()
6847 prog->expected_attach_type = BPF_TRACE_UPROBE_MULTI; in libbpf_prepare_prog_load()
6848 opts->expected_attach_type = BPF_TRACE_UPROBE_MULTI; in libbpf_prepare_prog_load()
6851 if ((def & SEC_ATTACH_BTF) && !prog->attach_btf_id) { in libbpf_prepare_prog_load()
6855 attach_name = strchr(prog->sec_name, '/'); in libbpf_prepare_prog_load()
6866 …pr_warn("prog '%s': no BTF-based attach target is specified, use bpf_program__set_attach_target()\… in libbpf_prepare_prog_load()
6867 prog->name); in libbpf_prepare_prog_load()
6868 return -EINVAL; in libbpf_prepare_prog_load()
6877 prog->attach_btf_obj_fd = btf_obj_fd; in libbpf_prepare_prog_load()
6878 prog->attach_btf_id = btf_type_id; in libbpf_prepare_prog_load()
6881 * prog->atach_btf_obj_fd/prog->attach_btf_id anymore because in libbpf_prepare_prog_load()
6885 opts->attach_btf_obj_fd = btf_obj_fd; in libbpf_prepare_prog_load()
6886 opts->attach_btf_id = btf_type_id; in libbpf_prepare_prog_load()
6904 __u32 log_level = prog->log_level; in bpf_object_load_prog()
6906 if (prog->type == BPF_PROG_TYPE_UNSPEC) { in bpf_object_load_prog()
6912 prog->name, prog->sec_name); in bpf_object_load_prog()
6913 return -EINVAL; in bpf_object_load_prog()
6917 return -EINVAL; in bpf_object_load_prog()
6920 prog_name = prog->name; in bpf_object_load_prog()
6921 load_attr.attach_prog_fd = prog->attach_prog_fd; in bpf_object_load_prog()
6922 load_attr.attach_btf_obj_fd = prog->attach_btf_obj_fd; in bpf_object_load_prog()
6923 load_attr.attach_btf_id = prog->attach_btf_id; in bpf_object_load_prog()
6925 load_attr.prog_ifindex = prog->prog_ifindex; in bpf_object_load_prog()
6926 load_attr.expected_attach_type = prog->expected_attach_type; in bpf_object_load_prog()
6932 load_attr.func_info = prog->func_info; in bpf_object_load_prog()
6933 load_attr.func_info_rec_size = prog->func_info_rec_size; in bpf_object_load_prog()
6934 load_attr.func_info_cnt = prog->func_info_cnt; in bpf_object_load_prog()
6935 load_attr.line_info = prog->line_info; in bpf_object_load_prog()
6936 load_attr.line_info_rec_size = prog->line_info_rec_size; in bpf_object_load_prog()
6937 load_attr.line_info_cnt = prog->line_info_cnt; in bpf_object_load_prog()
6940 load_attr.prog_flags = prog->prog_flags; in bpf_object_load_prog()
6941 load_attr.fd_array = obj->fd_array; in bpf_object_load_prog()
6944 if (prog->sec_def && prog->sec_def->prog_prepare_load_fn) { in bpf_object_load_prog()
6945 err = prog->sec_def->prog_prepare_load_fn(prog, &load_attr, prog->sec_def->cookie); in bpf_object_load_prog()
6948 prog->name, err); in bpf_object_load_prog()
6951 insns = prog->insns; in bpf_object_load_prog()
6952 insns_cnt = prog->insns_cnt; in bpf_object_load_prog()
6955 if (obj->gen_loader) { in bpf_object_load_prog()
6956 bpf_gen__prog_load(obj->gen_loader, prog->type, prog->name, in bpf_object_load_prog()
6958 prog - obj->programs); in bpf_object_load_prog()
6959 *prog_fd = -1; in bpf_object_load_prog()
6970 if (prog->log_buf) { in bpf_object_load_prog()
6971 log_buf = prog->log_buf; in bpf_object_load_prog()
6972 log_buf_size = prog->log_size; in bpf_object_load_prog()
6974 } else if (obj->log_buf) { in bpf_object_load_prog()
6975 log_buf = obj->log_buf; in bpf_object_load_prog()
6976 log_buf_size = obj->log_size; in bpf_object_load_prog()
6982 ret = -ENOMEM; in bpf_object_load_prog()
6995 ret = bpf_prog_load(prog->type, prog_name, license, insns, insns_cnt, &load_attr); in bpf_object_load_prog()
6998 pr_debug("prog '%s': -- BEGIN PROG LOAD LOG --\n%s-- END PROG LOAD LOG --\n", in bpf_object_load_prog()
6999 prog->name, log_buf); in bpf_object_load_prog()
7002 if (obj->has_rodata && kernel_supports(obj, FEAT_PROG_BIND_MAP)) { in bpf_object_load_prog()
7006 for (i = 0; i < obj->nr_maps; i++) { in bpf_object_load_prog()
7007 map = &prog->obj->maps[i]; in bpf_object_load_prog()
7008 if (map->libbpf_type != LIBBPF_MAP_RODATA) in bpf_object_load_prog()
7014 prog->name, map->real_name, cp); in bpf_object_load_prog()
7034 * Currently, we'll get -EINVAL when we reach (UINT_MAX >> 2). in bpf_object_load_prog()
7039 ret = -errno; in bpf_object_load_prog()
7041 /* post-process verifier log to improve error descriptions */ in bpf_object_load_prog()
7045 pr_warn("prog '%s': BPF program load failed: %s\n", prog->name, cp); in bpf_object_load_prog()
7049 pr_warn("prog '%s': -- BEGIN PROG LOAD LOG --\n%s-- END PROG LOAD LOG --\n", in bpf_object_load_prog()
7050 prog->name, log_buf); in bpf_object_load_prog()
7066 p = cur - 1; in find_prev_line()
7067 while (p - 1 >= buf && *(p - 1) != '\n') in find_prev_line()
7068 p--; in find_prev_line()
7076 /* size of the remaining log content to the right from the to-be-replaced part */ in patch_log()
7077 size_t rem_sz = (buf + log_sz) - (orig + orig_sz); in patch_log()
7082 * shift log contents by (patch_sz - orig_sz) bytes to the right in patch_log()
7083 * starting from after to-be-replaced part of the log. in patch_log()
7086 * shift log contents by (orig_sz - patch_sz) bytes to the left in patch_log()
7087 * starting from after to-be-replaced part of the log in patch_log()
7096 patch_sz -= (orig + patch_sz) - (buf + buf_sz) + 1; in patch_log()
7098 } else if (patch_sz - orig_sz > buf_sz - log_sz) { in patch_log()
7100 rem_sz -= (patch_sz - orig_sz) - (buf_sz - log_sz); in patch_log()
7114 /* Expected log for failed and not properly guarded CO-RE relocation: in fixup_log_failed_core_relo()
7115 * line1 -> 123: (85) call unknown#195896080 in fixup_log_failed_core_relo()
7116 * line2 -> invalid func unknown#195896080 in fixup_log_failed_core_relo()
7117 * line3 -> <anything else or end of buffer> in fixup_log_failed_core_relo()
7120 * instruction index to find corresponding CO-RE relocation and in fixup_log_failed_core_relo()
7122 * failed CO-RE relocation. in fixup_log_failed_core_relo()
7125 struct bpf_core_spec spec; in fixup_log_failed_core_relo() local
7136 err = bpf_core_parse_spec(prog->name, prog->obj->btf, relo, &spec); in fixup_log_failed_core_relo()
7140 spec_len = bpf_core_format_spec(spec_buf, sizeof(spec_buf), &spec); in fixup_log_failed_core_relo()
7142 "%d: <invalid CO-RE relocation>\n" in fixup_log_failed_core_relo()
7143 "failed to resolve CO-RE relocation %s%s\n", in fixup_log_failed_core_relo()
7146 patch_log(buf, buf_sz, log_sz, line1, line3 - line1, patch); in fixup_log_failed_core_relo()
7154 * line1 -> 123: (85) call unknown#2001000345 in fixup_log_missing_map_load()
7155 * line2 -> invalid func unknown#2001000345 in fixup_log_missing_map_load()
7156 * line3 -> <anything else or end of buffer> in fixup_log_missing_map_load()
7159 * "345" in "2001000345" is a map index in obj->maps to fetch map name. in fixup_log_missing_map_load()
7161 struct bpf_object *obj = prog->obj; in fixup_log_missing_map_load()
7169 map_idx -= POISON_LDIMM64_MAP_BASE; in fixup_log_missing_map_load()
7170 if (map_idx < 0 || map_idx >= obj->nr_maps) in fixup_log_missing_map_load()
7172 map = &obj->maps[map_idx]; in fixup_log_missing_map_load()
7177 insn_idx, map->name); in fixup_log_missing_map_load()
7179 patch_log(buf, buf_sz, log_sz, line1, line3 - line1, patch); in fixup_log_missing_map_load()
7187 * line1 -> 123: (85) call unknown#2002000345 in fixup_log_missing_kfunc_call()
7188 * line2 -> invalid func unknown#2002000345 in fixup_log_missing_kfunc_call()
7189 * line3 -> <anything else or end of buffer> in fixup_log_missing_kfunc_call()
7192 * "345" in "2002000345" is an extern index in obj->externs to fetch kfunc name. in fixup_log_missing_kfunc_call()
7194 struct bpf_object *obj = prog->obj; in fixup_log_missing_kfunc_call()
7202 ext_idx -= POISON_CALL_KFUNC_BASE; in fixup_log_missing_kfunc_call()
7203 if (ext_idx < 0 || ext_idx >= obj->nr_extern) in fixup_log_missing_kfunc_call()
7205 ext = &obj->externs[ext_idx]; in fixup_log_missing_kfunc_call()
7210 insn_idx, ext->name); in fixup_log_missing_kfunc_call()
7212 patch_log(buf, buf_sz, log_sz, line1, line3 - line1, patch); in fixup_log_missing_kfunc_call()
7227 next_line = buf + log_sz - 1; in fixup_verifier_log()
7239 /* failed CO-RE relocation case */ in fixup_verifier_log()
7267 struct bpf_object *obj = prog->obj; in bpf_program_record_relos()
7270 for (i = 0; i < prog->nr_reloc; i++) { in bpf_program_record_relos()
7271 struct reloc_desc *relo = &prog->reloc_desc[i]; in bpf_program_record_relos()
7272 struct extern_desc *ext = &obj->externs[relo->ext_idx]; in bpf_program_record_relos()
7275 switch (relo->type) { in bpf_program_record_relos()
7277 if (ext->type != EXT_KSYM) in bpf_program_record_relos()
7279 kind = btf_is_var(btf__type_by_id(obj->btf, ext->btf_id)) ? in bpf_program_record_relos()
7281 bpf_gen__record_extern(obj->gen_loader, ext->name, in bpf_program_record_relos()
7282 ext->is_weak, !ext->ksym.type_id, in bpf_program_record_relos()
7283 true, kind, relo->insn_idx); in bpf_program_record_relos()
7286 bpf_gen__record_extern(obj->gen_loader, ext->name, in bpf_program_record_relos()
7287 ext->is_weak, false, false, BTF_KIND_FUNC, in bpf_program_record_relos()
7288 relo->insn_idx); in bpf_program_record_relos()
7292 .insn_off = relo->insn_idx * 8, in bpf_program_record_relos()
7293 .type_id = relo->core_relo->type_id, in bpf_program_record_relos()
7294 .access_str_off = relo->core_relo->access_str_off, in bpf_program_record_relos()
7295 .kind = relo->core_relo->kind, in bpf_program_record_relos()
7298 bpf_gen__record_relo_core(obj->gen_loader, &cr); in bpf_program_record_relos()
7315 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__load_progs()
7316 prog = &obj->programs[i]; in bpf_object__load_progs()
7322 for (i = 0; i < obj->nr_programs; i++) { in bpf_object__load_progs()
7323 prog = &obj->programs[i]; in bpf_object__load_progs()
7326 if (!prog->autoload) { in bpf_object__load_progs()
7327 pr_debug("prog '%s': skipped loading\n", prog->name); in bpf_object__load_progs()
7330 prog->log_level |= log_level; in bpf_object__load_progs()
7332 if (obj->gen_loader) in bpf_object__load_progs()
7335 err = bpf_object_load_prog(obj, prog, prog->insns, prog->insns_cnt, in bpf_object__load_progs()
7336 obj->license, obj->kern_version, &prog->fd); in bpf_object__load_progs()
7338 pr_warn("prog '%s': failed to load: %d\n", prog->name, err); in bpf_object__load_progs()
7355 prog->sec_def = find_sec_def(prog->sec_name); in bpf_object_init_progs()
7356 if (!prog->sec_def) { in bpf_object_init_progs()
7359 prog->name, prog->sec_name); in bpf_object_init_progs()
7363 prog->type = prog->sec_def->prog_type; in bpf_object_init_progs()
7364 prog->expected_attach_type = prog->sec_def->expected_attach_type; in bpf_object_init_progs()
7369 if (prog->sec_def->prog_setup_fn) { in bpf_object_init_progs()
7370 err = prog->sec_def->prog_setup_fn(prog, prog->sec_def->cookie); in bpf_object_init_progs()
7373 prog->name, err); in bpf_object_init_progs()
7396 return ERR_PTR(-LIBBPF_ERRNO__LIBELF); in bpf_object_open()
7400 return ERR_PTR(-EINVAL); in bpf_object_open()
7405 snprintf(tmp_name, sizeof(tmp_name), "%lx-%lx", in bpf_object_open()
7418 return ERR_PTR(-EINVAL); in bpf_object_open()
7420 return ERR_PTR(-EINVAL); in bpf_object_open()
7426 obj->log_buf = log_buf; in bpf_object_open()
7427 obj->log_size = log_size; in bpf_object_open()
7428 obj->log_level = log_level; in bpf_object_open()
7433 err = -ENAMETOOLONG; in bpf_object_open()
7436 obj->btf_custom_path = strdup(btf_tmp_path); in bpf_object_open()
7437 if (!obj->btf_custom_path) { in bpf_object_open()
7438 err = -ENOMEM; in bpf_object_open()
7445 obj->kconfig = strdup(kconfig); in bpf_object_open()
7446 if (!obj->kconfig) { in bpf_object_open()
7447 err = -ENOMEM; in bpf_object_open()
7475 return libbpf_err_ptr(-EINVAL); in bpf_object__open_file()
7492 return libbpf_err_ptr(-EINVAL); in bpf_object__open_mem()
7502 return libbpf_err(-EINVAL); in bpf_object_unload()
7504 for (i = 0; i < obj->nr_maps; i++) { in bpf_object_unload()
7505 zclose(obj->maps[i].fd); in bpf_object_unload()
7506 if (obj->maps[i].st_ops) in bpf_object_unload()
7507 zfree(&obj->maps[i].st_ops->kern_vdata); in bpf_object_unload()
7510 for (i = 0; i < obj->nr_programs; i++) in bpf_object_unload()
7511 bpf_program__unload(&obj->programs[i]); in bpf_object_unload()
7524 m->def.map_flags &= ~BPF_F_MMAPABLE; in bpf_object__sanitize_maps()
7539 err = -errno; in libbpf_kallsyms_parse()
7551 err = -EINVAL; in libbpf_kallsyms_parse()
7572 if (!ext || ext->type != EXT_KSYM) in kallsyms_cb()
7575 t = btf__type_by_id(obj->btf, ext->btf_id); in kallsyms_cb()
7579 if (ext->is_set && ext->ksym.addr != sym_addr) { in kallsyms_cb()
7581 sym_name, ext->ksym.addr, sym_addr); in kallsyms_cb()
7582 return -EINVAL; in kallsyms_cb()
7584 if (!ext->is_set) { in kallsyms_cb()
7585 ext->is_set = true; in kallsyms_cb()
7586 ext->ksym.addr = sym_addr; in kallsyms_cb()
7605 btf = obj->btf_vmlinux; in find_ksym_btf_id()
7609 if (id == -ENOENT) { in find_ksym_btf_id()
7614 for (i = 0; i < obj->btf_module_cnt; i++) { in find_ksym_btf_id()
7616 mod_btf = &obj->btf_modules[i]; in find_ksym_btf_id()
7617 btf = mod_btf->btf; in find_ksym_btf_id()
7619 if (id != -ENOENT) in find_ksym_btf_id()
7624 return -ESRCH; in find_ksym_btf_id()
7641 id = find_ksym_btf_id(obj, ext->name, BTF_KIND_VAR, &btf, &mod_btf); in bpf_object__resolve_ksym_var_btf_id()
7643 if (id == -ESRCH && ext->is_weak) in bpf_object__resolve_ksym_var_btf_id()
7646 ext->name); in bpf_object__resolve_ksym_var_btf_id()
7651 local_type_id = ext->ksym.type_id; in bpf_object__resolve_ksym_var_btf_id()
7655 targ_var_name = btf__name_by_offset(btf, targ_var->name_off); in bpf_object__resolve_ksym_var_btf_id()
7656 targ_type = skip_mods_and_typedefs(btf, targ_var->type, &targ_type_id); in bpf_object__resolve_ksym_var_btf_id()
7658 err = bpf_core_types_are_compat(obj->btf, local_type_id, in bpf_object__resolve_ksym_var_btf_id()
7664 local_type = btf__type_by_id(obj->btf, local_type_id); in bpf_object__resolve_ksym_var_btf_id()
7665 local_name = btf__name_by_offset(obj->btf, local_type->name_off); in bpf_object__resolve_ksym_var_btf_id()
7666 targ_name = btf__name_by_offset(btf, targ_type->name_off); in bpf_object__resolve_ksym_var_btf_id()
7669 ext->name, local_type_id, in bpf_object__resolve_ksym_var_btf_id()
7672 return -EINVAL; in bpf_object__resolve_ksym_var_btf_id()
7675 ext->is_set = true; in bpf_object__resolve_ksym_var_btf_id()
7676 ext->ksym.kernel_btf_obj_fd = mod_btf ? mod_btf->fd : 0; in bpf_object__resolve_ksym_var_btf_id()
7677 ext->ksym.kernel_btf_id = id; in bpf_object__resolve_ksym_var_btf_id()
7679 ext->name, id, btf_kind_str(targ_var), targ_var_name); in bpf_object__resolve_ksym_var_btf_id()
7693 local_func_proto_id = ext->ksym.type_id; in bpf_object__resolve_ksym_func_btf_id()
7695 kfunc_id = find_ksym_btf_id(obj, ext->essent_name ?: ext->name, BTF_KIND_FUNC, &kern_btf, in bpf_object__resolve_ksym_func_btf_id()
7698 if (kfunc_id == -ESRCH && ext->is_weak) in bpf_object__resolve_ksym_func_btf_id()
7701 ext->name); in bpf_object__resolve_ksym_func_btf_id()
7706 kfunc_proto_id = kern_func->type; in bpf_object__resolve_ksym_func_btf_id()
7708 ret = bpf_core_types_are_compat(obj->btf, local_func_proto_id, in bpf_object__resolve_ksym_func_btf_id()
7711 if (ext->is_weak) in bpf_object__resolve_ksym_func_btf_id()
7715 ext->name, local_func_proto_id, in bpf_object__resolve_ksym_func_btf_id()
7716 mod_btf ? mod_btf->name : "vmlinux", kfunc_proto_id); in bpf_object__resolve_ksym_func_btf_id()
7717 return -EINVAL; in bpf_object__resolve_ksym_func_btf_id()
7721 if (mod_btf && !mod_btf->fd_array_idx) { in bpf_object__resolve_ksym_func_btf_id()
7722 /* insn->off is s16 */ in bpf_object__resolve_ksym_func_btf_id()
7723 if (obj->fd_array_cnt == INT16_MAX) { in bpf_object__resolve_ksym_func_btf_id()
7725 ext->name, mod_btf->fd_array_idx); in bpf_object__resolve_ksym_func_btf_id()
7726 return -E2BIG; in bpf_object__resolve_ksym_func_btf_id()
7729 if (!obj->fd_array_cnt) in bpf_object__resolve_ksym_func_btf_id()
7730 obj->fd_array_cnt = 1; in bpf_object__resolve_ksym_func_btf_id()
7732 ret = libbpf_ensure_mem((void **)&obj->fd_array, &obj->fd_array_cap, sizeof(int), in bpf_object__resolve_ksym_func_btf_id()
7733 obj->fd_array_cnt + 1); in bpf_object__resolve_ksym_func_btf_id()
7736 mod_btf->fd_array_idx = obj->fd_array_cnt; in bpf_object__resolve_ksym_func_btf_id()
7738 obj->fd_array[obj->fd_array_cnt++] = mod_btf->fd; in bpf_object__resolve_ksym_func_btf_id()
7741 ext->is_set = true; in bpf_object__resolve_ksym_func_btf_id()
7742 ext->ksym.kernel_btf_id = kfunc_id; in bpf_object__resolve_ksym_func_btf_id()
7743 ext->ksym.btf_fd_idx = mod_btf ? mod_btf->fd_array_idx : 0; in bpf_object__resolve_ksym_func_btf_id()
7746 * {kernel_btf_id, btf_fd_idx} -> fixup bpf_call. in bpf_object__resolve_ksym_func_btf_id()
7747 * {kernel_btf_id, kernel_btf_obj_fd} -> fixup ld_imm64. in bpf_object__resolve_ksym_func_btf_id()
7749 ext->ksym.kernel_btf_obj_fd = mod_btf ? mod_btf->fd : 0; in bpf_object__resolve_ksym_func_btf_id()
7751 ext->name, mod_btf ? mod_btf->name : "vmlinux", kfunc_id); in bpf_object__resolve_ksym_func_btf_id()
7762 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__resolve_ksyms_btf_id()
7763 ext = &obj->externs[i]; in bpf_object__resolve_ksyms_btf_id()
7764 if (ext->type != EXT_KSYM || !ext->ksym.type_id) in bpf_object__resolve_ksyms_btf_id()
7767 if (obj->gen_loader) { in bpf_object__resolve_ksyms_btf_id()
7768 ext->is_set = true; in bpf_object__resolve_ksyms_btf_id()
7769 ext->ksym.kernel_btf_obj_fd = 0; in bpf_object__resolve_ksyms_btf_id()
7770 ext->ksym.kernel_btf_id = 0; in bpf_object__resolve_ksyms_btf_id()
7773 t = btf__type_by_id(obj->btf, ext->btf_id); in bpf_object__resolve_ksyms_btf_id()
7793 if (obj->nr_extern == 0) in bpf_object__resolve_externs()
7796 if (obj->kconfig_map_idx >= 0) in bpf_object__resolve_externs()
7797 kcfg_data = obj->maps[obj->kconfig_map_idx].mmaped; in bpf_object__resolve_externs()
7799 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__resolve_externs()
7800 ext = &obj->externs[i]; in bpf_object__resolve_externs()
7802 if (ext->type == EXT_KSYM) { in bpf_object__resolve_externs()
7803 if (ext->ksym.type_id) in bpf_object__resolve_externs()
7808 } else if (ext->type == EXT_KCFG) { in bpf_object__resolve_externs()
7809 void *ext_ptr = kcfg_data + ext->kcfg.data_off; in bpf_object__resolve_externs()
7813 if (str_has_pfx(ext->name, "CONFIG_")) { in bpf_object__resolve_externs()
7819 if (strcmp(ext->name, "LINUX_KERNEL_VERSION") == 0) { in bpf_object__resolve_externs()
7822 pr_warn("extern (kcfg) '%s': failed to get kernel version\n", ext->name); in bpf_object__resolve_externs()
7823 return -EINVAL; in bpf_object__resolve_externs()
7825 } else if (strcmp(ext->name, "LINUX_HAS_BPF_COOKIE") == 0) { in bpf_object__resolve_externs()
7827 } else if (strcmp(ext->name, "LINUX_HAS_SYSCALL_WRAPPER") == 0) { in bpf_object__resolve_externs()
7829 } else if (!str_has_pfx(ext->name, "LINUX_") || !ext->is_weak) { in bpf_object__resolve_externs()
7837 pr_warn("extern (kcfg) '%s': unrecognized virtual extern\n", ext->name); in bpf_object__resolve_externs()
7838 return -EINVAL; in bpf_object__resolve_externs()
7845 ext->name, (long long)value); in bpf_object__resolve_externs()
7847 pr_warn("extern '%s': unrecognized extern kind\n", ext->name); in bpf_object__resolve_externs()
7848 return -EINVAL; in bpf_object__resolve_externs()
7854 return -EINVAL; in bpf_object__resolve_externs()
7856 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__resolve_externs()
7857 ext = &obj->externs[i]; in bpf_object__resolve_externs()
7858 if (ext->type == EXT_KCFG && !ext->is_set) { in bpf_object__resolve_externs()
7867 return -EINVAL; in bpf_object__resolve_externs()
7872 return -EINVAL; in bpf_object__resolve_externs()
7877 return -EINVAL; in bpf_object__resolve_externs()
7879 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__resolve_externs()
7880 ext = &obj->externs[i]; in bpf_object__resolve_externs()
7882 if (!ext->is_set && !ext->is_weak) { in bpf_object__resolve_externs()
7883 pr_warn("extern '%s' (strong): not resolved\n", ext->name); in bpf_object__resolve_externs()
7884 return -ESRCH; in bpf_object__resolve_externs()
7885 } else if (!ext->is_set) { in bpf_object__resolve_externs()
7887 ext->name); in bpf_object__resolve_externs()
7899 st_ops = map->st_ops; in bpf_map_prepare_vdata()
7900 for (i = 0; i < btf_vlen(st_ops->type); i++) { in bpf_map_prepare_vdata()
7901 struct bpf_program *prog = st_ops->progs[i]; in bpf_map_prepare_vdata()
7909 kern_data = st_ops->kern_vdata + st_ops->kern_func_off[i]; in bpf_map_prepare_vdata()
7918 for (i = 0; i < obj->nr_maps; i++) in bpf_object_prepare_struct_ops()
7919 if (bpf_map__is_struct_ops(&obj->maps[i])) in bpf_object_prepare_struct_ops()
7920 bpf_map_prepare_vdata(&obj->maps[i]); in bpf_object_prepare_struct_ops()
7930 return libbpf_err(-EINVAL); in bpf_object_load()
7932 if (obj->loaded) { in bpf_object_load()
7933 pr_warn("object '%s': load can't be attempted twice\n", obj->name); in bpf_object_load()
7934 return libbpf_err(-EINVAL); in bpf_object_load()
7937 if (obj->gen_loader) in bpf_object_load()
7938 bpf_gen__init(obj->gen_loader, extra_log_level, obj->nr_programs, obj->nr_maps); in bpf_object_load()
7942 err = err ? : bpf_object__resolve_externs(obj, obj->kconfig); in bpf_object_load()
7947 err = err ? : bpf_object__relocate(obj, obj->btf_custom_path ? : target_btf_path); in bpf_object_load()
7952 if (obj->gen_loader) { in bpf_object_load()
7954 if (obj->btf) in bpf_object_load()
7955 btf__set_fd(obj->btf, -1); in bpf_object_load()
7956 for (i = 0; i < obj->nr_maps; i++) in bpf_object_load()
7957 obj->maps[i].fd = -1; in bpf_object_load()
7959 err = bpf_gen__finish(obj->gen_loader, obj->nr_programs, obj->nr_maps); in bpf_object_load()
7963 zfree(&obj->fd_array); in bpf_object_load()
7966 for (i = 0; i < obj->btf_module_cnt; i++) { in bpf_object_load()
7967 close(obj->btf_modules[i].fd); in bpf_object_load()
7968 btf__free(obj->btf_modules[i].btf); in bpf_object_load()
7969 free(obj->btf_modules[i].name); in bpf_object_load()
7971 free(obj->btf_modules); in bpf_object_load()
7974 btf__free(obj->btf_vmlinux); in bpf_object_load()
7975 obj->btf_vmlinux = NULL; in bpf_object_load()
7977 obj->loaded = true; /* doesn't matter if successfully or not */ in bpf_object_load()
7984 /* unpin any maps that were auto-pinned during load */ in bpf_object_load()
7985 for (i = 0; i < obj->nr_maps; i++) in bpf_object_load()
7986 if (obj->maps[i].pinned && !obj->maps[i].reused) in bpf_object_load()
7987 bpf_map__unpin(&obj->maps[i], NULL); in bpf_object_load()
7990 pr_warn("failed to load object '%s'\n", obj->path); in bpf_object_load()
8007 return -ENOMEM; in make_parent_dir()
8011 err = -errno; in make_parent_dir()
8015 cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg)); in make_parent_dir()
8029 return -EINVAL; in check_path()
8033 return -ENOMEM; in check_path()
8039 err = -errno; in check_path()
8045 err = -EINVAL; in check_path()
8056 if (prog->fd < 0) { in bpf_program__pin()
8057 pr_warn("prog '%s': can't pin program that wasn't loaded\n", prog->name); in bpf_program__pin()
8058 return libbpf_err(-EINVAL); in bpf_program__pin()
8069 if (bpf_obj_pin(prog->fd, path)) { in bpf_program__pin()
8070 err = -errno; in bpf_program__pin()
8072 pr_warn("prog '%s': failed to pin at '%s': %s\n", prog->name, path, cp); in bpf_program__pin()
8076 pr_debug("prog '%s': pinned at '%s'\n", prog->name, path); in bpf_program__pin()
8084 if (prog->fd < 0) { in bpf_program__unpin()
8085 pr_warn("prog '%s': can't unpin program that wasn't loaded\n", prog->name); in bpf_program__unpin()
8086 return libbpf_err(-EINVAL); in bpf_program__unpin()
8095 return libbpf_err(-errno); in bpf_program__unpin()
8097 pr_debug("prog '%s': unpinned from '%s'\n", prog->name, path); in bpf_program__unpin()
8108 return libbpf_err(-EINVAL); in bpf_map__pin()
8111 if (map->pin_path) { in bpf_map__pin()
8112 if (path && strcmp(path, map->pin_path)) { in bpf_map__pin()
8114 bpf_map__name(map), map->pin_path, path); in bpf_map__pin()
8115 return libbpf_err(-EINVAL); in bpf_map__pin()
8116 } else if (map->pinned) { in bpf_map__pin()
8117 pr_debug("map '%s' already pinned at '%s'; not re-pinning\n", in bpf_map__pin()
8118 bpf_map__name(map), map->pin_path); in bpf_map__pin()
8125 return libbpf_err(-EINVAL); in bpf_map__pin()
8126 } else if (map->pinned) { in bpf_map__pin()
8128 return libbpf_err(-EEXIST); in bpf_map__pin()
8131 map->pin_path = strdup(path); in bpf_map__pin()
8132 if (!map->pin_path) { in bpf_map__pin()
8133 err = -errno; in bpf_map__pin()
8138 err = make_parent_dir(map->pin_path); in bpf_map__pin()
8142 err = check_path(map->pin_path); in bpf_map__pin()
8146 if (bpf_obj_pin(map->fd, map->pin_path)) { in bpf_map__pin()
8147 err = -errno; in bpf_map__pin()
8151 map->pinned = true; in bpf_map__pin()
8152 pr_debug("pinned map '%s'\n", map->pin_path); in bpf_map__pin()
8157 cp = libbpf_strerror_r(-err, errmsg, sizeof(errmsg)); in bpf_map__pin()
8168 return libbpf_err(-EINVAL); in bpf_map__unpin()
8171 if (map->pin_path) { in bpf_map__unpin()
8172 if (path && strcmp(path, map->pin_path)) { in bpf_map__unpin()
8174 bpf_map__name(map), map->pin_path, path); in bpf_map__unpin()
8175 return libbpf_err(-EINVAL); in bpf_map__unpin()
8177 path = map->pin_path; in bpf_map__unpin()
8181 return libbpf_err(-EINVAL); in bpf_map__unpin()
8190 return libbpf_err(-errno); in bpf_map__unpin()
8192 map->pinned = false; in bpf_map__unpin()
8205 return libbpf_err(-errno); in bpf_map__set_pin_path()
8208 free(map->pin_path); in bpf_map__set_pin_path()
8209 map->pin_path = new; in bpf_map__set_pin_path()
8218 return map->pin_path; in bpf_map__pin_path()
8223 return map->pinned; in bpf_map__is_pinned()
8242 return libbpf_err(-ENOENT); in bpf_object__pin_maps()
8244 if (!obj->loaded) { in bpf_object__pin_maps()
8246 return libbpf_err(-ENOENT); in bpf_object__pin_maps()
8253 if (!map->autocreate) in bpf_object__pin_maps()
8262 } else if (!map->pin_path) { in bpf_object__pin_maps()
8275 if (!map->pin_path) in bpf_object__pin_maps()
8290 return libbpf_err(-ENOENT); in bpf_object__unpin_maps()
8302 } else if (!map->pin_path) { in bpf_object__unpin_maps()
8321 return libbpf_err(-ENOENT); in bpf_object__pin_programs()
8323 if (!obj->loaded) { in bpf_object__pin_programs()
8325 return libbpf_err(-ENOENT); in bpf_object__pin_programs()
8329 err = pathname_concat(buf, sizeof(buf), path, prog->name); in bpf_object__pin_programs()
8342 if (pathname_concat(buf, sizeof(buf), path, prog->name)) in bpf_object__pin_programs()
8357 return libbpf_err(-ENOENT); in bpf_object__unpin_programs()
8362 err = pathname_concat(buf, sizeof(buf), path, prog->name); in bpf_object__unpin_programs()
8408 if (map->inner_map) { in bpf_map__destroy()
8409 bpf_map__destroy(map->inner_map); in bpf_map__destroy()
8410 zfree(&map->inner_map); in bpf_map__destroy()
8413 zfree(&map->init_slots); in bpf_map__destroy()
8414 map->init_slots_sz = 0; in bpf_map__destroy()
8416 if (map->mmaped) { in bpf_map__destroy()
8419 mmap_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries); in bpf_map__destroy()
8420 munmap(map->mmaped, mmap_sz); in bpf_map__destroy()
8421 map->mmaped = NULL; in bpf_map__destroy()
8424 if (map->st_ops) { in bpf_map__destroy()
8425 zfree(&map->st_ops->data); in bpf_map__destroy()
8426 zfree(&map->st_ops->progs); in bpf_map__destroy()
8427 zfree(&map->st_ops->kern_func_off); in bpf_map__destroy()
8428 zfree(&map->st_ops); in bpf_map__destroy()
8431 zfree(&map->name); in bpf_map__destroy()
8432 zfree(&map->real_name); in bpf_map__destroy()
8433 zfree(&map->pin_path); in bpf_map__destroy()
8435 if (map->fd >= 0) in bpf_map__destroy()
8436 zclose(map->fd); in bpf_map__destroy()
8446 usdt_manager_free(obj->usdt_man); in bpf_object__close()
8447 obj->usdt_man = NULL; in bpf_object__close()
8449 bpf_gen__free(obj->gen_loader); in bpf_object__close()
8452 btf__free(obj->btf); in bpf_object__close()
8453 btf__free(obj->btf_vmlinux); in bpf_object__close()
8454 btf_ext__free(obj->btf_ext); in bpf_object__close()
8456 for (i = 0; i < obj->nr_maps; i++) in bpf_object__close()
8457 bpf_map__destroy(&obj->maps[i]); in bpf_object__close()
8459 zfree(&obj->btf_custom_path); in bpf_object__close()
8460 zfree(&obj->kconfig); in bpf_object__close()
8462 for (i = 0; i < obj->nr_extern; i++) { in bpf_object__close()
8463 zfree(&obj->externs[i].name); in bpf_object__close()
8464 zfree(&obj->externs[i].essent_name); in bpf_object__close()
8467 zfree(&obj->externs); in bpf_object__close()
8468 obj->nr_extern = 0; in bpf_object__close()
8470 zfree(&obj->maps); in bpf_object__close()
8471 obj->nr_maps = 0; in bpf_object__close()
8473 if (obj->programs && obj->nr_programs) { in bpf_object__close()
8474 for (i = 0; i < obj->nr_programs; i++) in bpf_object__close()
8475 bpf_program__exit(&obj->programs[i]); in bpf_object__close()
8477 zfree(&obj->programs); in bpf_object__close()
8484 return obj ? obj->name : libbpf_err_ptr(-EINVAL); in bpf_object__name()
8489 return obj ? obj->kern_version : 0; in bpf_object__kversion()
8494 return obj ? obj->btf : NULL; in bpf_object__btf()
8499 return obj->btf ? btf__fd(obj->btf) : -1; in bpf_object__btf_fd()
8504 if (obj->loaded) in bpf_object__set_kversion()
8505 return libbpf_err(-EINVAL); in bpf_object__set_kversion()
8507 obj->kern_version = kern_version; in bpf_object__set_kversion()
8517 return -EFAULT; in bpf_object__gen_loader()
8519 return -EINVAL; in bpf_object__gen_loader()
8522 return -ENOMEM; in bpf_object__gen_loader()
8523 gen->opts = opts; in bpf_object__gen_loader()
8524 obj->gen_loader = gen; in bpf_object__gen_loader()
8532 size_t nr_programs = obj->nr_programs; in __bpf_program__iter()
8540 return forward ? &obj->programs[0] : in __bpf_program__iter()
8541 &obj->programs[nr_programs - 1]; in __bpf_program__iter()
8543 if (p->obj != obj) { in __bpf_program__iter()
8548 idx = (p - obj->programs) + (forward ? 1 : -1); in __bpf_program__iter()
8549 if (idx >= obj->nr_programs || idx < 0) in __bpf_program__iter()
8551 return &obj->programs[idx]; in __bpf_program__iter()
8580 prog->prog_ifindex = ifindex; in bpf_program__set_ifindex()
8585 return prog->name; in bpf_program__name()
8590 return prog->sec_name; in bpf_program__section_name()
8595 return prog->autoload; in bpf_program__autoload()
8600 if (prog->obj->loaded) in bpf_program__set_autoload()
8601 return libbpf_err(-EINVAL); in bpf_program__set_autoload()
8603 prog->autoload = autoload; in bpf_program__set_autoload()
8609 return prog->autoattach; in bpf_program__autoattach()
8614 prog->autoattach = autoattach; in bpf_program__set_autoattach()
8619 return prog->insns; in bpf_program__insns()
8624 return prog->insns_cnt; in bpf_program__insn_cnt()
8632 if (prog->obj->loaded) in bpf_program__set_insns()
8633 return -EBUSY; in bpf_program__set_insns()
8635 insns = libbpf_reallocarray(prog->insns, new_insn_cnt, sizeof(*insns)); in bpf_program__set_insns()
8638 pr_warn("prog '%s': failed to realloc prog code\n", prog->name); in bpf_program__set_insns()
8639 return -ENOMEM; in bpf_program__set_insns()
8643 prog->insns = insns; in bpf_program__set_insns()
8644 prog->insns_cnt = new_insn_cnt; in bpf_program__set_insns()
8651 return libbpf_err(-EINVAL); in bpf_program__fd()
8653 if (prog->fd < 0) in bpf_program__fd()
8654 return libbpf_err(-ENOENT); in bpf_program__fd()
8656 return prog->fd; in bpf_program__fd()
8664 return prog->type; in bpf_program__type()
8675 if (prog->obj->loaded) in bpf_program__set_type()
8676 return libbpf_err(-EBUSY); in bpf_program__set_type()
8679 if (prog->type == type) in bpf_program__set_type()
8682 prog->type = type; in bpf_program__set_type()
8686 * fallback handler, which by definition is program type-agnostic and in bpf_program__set_type()
8687 * is a catch-all custom handler, optionally set by the application, in bpf_program__set_type()
8690 if (prog->sec_def != &custom_fallback_def) in bpf_program__set_type()
8691 prog->sec_def = NULL; in bpf_program__set_type()
8700 return prog->expected_attach_type; in bpf_program__expected_attach_type()
8706 if (prog->obj->loaded) in bpf_program__set_expected_attach_type()
8707 return libbpf_err(-EBUSY); in bpf_program__set_expected_attach_type()
8709 prog->expected_attach_type = type; in bpf_program__set_expected_attach_type()
8715 return prog->prog_flags; in bpf_program__flags()
8720 if (prog->obj->loaded) in bpf_program__set_flags()
8721 return libbpf_err(-EBUSY); in bpf_program__set_flags()
8723 prog->prog_flags = flags; in bpf_program__set_flags()
8729 return prog->log_level; in bpf_program__log_level()
8734 if (prog->obj->loaded) in bpf_program__set_log_level()
8735 return libbpf_err(-EBUSY); in bpf_program__set_log_level()
8737 prog->log_level = log_level; in bpf_program__set_log_level()
8743 *log_size = prog->log_size; in bpf_program__log_buf()
8744 return prog->log_buf; in bpf_program__log_buf()
8750 return -EINVAL; in bpf_program__set_log_buf()
8751 if (prog->log_size > UINT_MAX) in bpf_program__set_log_buf()
8752 return -EINVAL; in bpf_program__set_log_buf()
8753 if (prog->obj->loaded) in bpf_program__set_log_buf()
8754 return -EBUSY; in bpf_program__set_log_buf()
8756 prog->log_buf = log_buf; in bpf_program__set_log_buf()
8757 prog->log_size = log_size; in bpf_program__set_log_buf()
8885 return libbpf_err(-EINVAL); in libbpf_register_prog_handler()
8888 return libbpf_err(-E2BIG); in libbpf_register_prog_handler()
8894 return libbpf_err(-ENOMEM); in libbpf_register_prog_handler()
8900 return libbpf_err(-EBUSY); in libbpf_register_prog_handler()
8905 sec_def->sec = sec ? strdup(sec) : NULL; in libbpf_register_prog_handler()
8906 if (sec && !sec_def->sec) in libbpf_register_prog_handler()
8907 return libbpf_err(-ENOMEM); in libbpf_register_prog_handler()
8909 sec_def->prog_type = prog_type; in libbpf_register_prog_handler()
8910 sec_def->expected_attach_type = exp_attach_type; in libbpf_register_prog_handler()
8911 sec_def->cookie = OPTS_GET(opts, cookie, 0); in libbpf_register_prog_handler()
8913 sec_def->prog_setup_fn = OPTS_GET(opts, prog_setup_fn, NULL); in libbpf_register_prog_handler()
8914 sec_def->prog_prepare_load_fn = OPTS_GET(opts, prog_prepare_load_fn, NULL); in libbpf_register_prog_handler()
8915 sec_def->prog_attach_fn = OPTS_GET(opts, prog_attach_fn, NULL); in libbpf_register_prog_handler()
8917 sec_def->handler_id = ++last_custom_sec_def_handler_id; in libbpf_register_prog_handler()
8924 return sec_def->handler_id; in libbpf_register_prog_handler()
8933 return libbpf_err(-EINVAL); in libbpf_unregister_prog_handler()
8947 return libbpf_err(-ENOENT); in libbpf_unregister_prog_handler()
8951 custom_sec_defs[i - 1] = custom_sec_defs[i]; in libbpf_unregister_prog_handler()
8952 custom_sec_def_cnt--; in libbpf_unregister_prog_handler()
8968 size_t len = strlen(sec_def->sec); in sec_def_matches()
8971 if (sec_def->sec[len - 1] == '/') { in sec_def_matches()
8972 if (str_has_pfx(sec_name, sec_def->sec)) in sec_def_matches()
8978 * well-formed SEC("type/extras") with proper '/' separator in sec_def_matches()
8980 if (sec_def->sec[len - 1] == '+') { in sec_def_matches()
8981 len--; in sec_def_matches()
8983 if (strncmp(sec_name, sec_def->sec, len) != 0) in sec_def_matches()
8991 return strcmp(sec_name, sec_def->sec) == 0; in sec_def_matches()
9036 if (sec_def->prog_prepare_load_fn != libbpf_prepare_prog_load) in libbpf_get_type_names()
9039 if (!(sec_def->cookie & SEC_ATTACHABLE)) in libbpf_get_type_names()
9061 return libbpf_err(-EINVAL); in libbpf_prog_type_by_name()
9065 *prog_type = sec_def->prog_type; in libbpf_prog_type_by_name()
9066 *expected_attach_type = sec_def->expected_attach_type; in libbpf_prog_type_by_name()
9077 return libbpf_err(-ESRCH); in libbpf_prog_type_by_name()
9119 for (i = 0; i < obj->nr_maps; i++) { in find_struct_ops_map_by_offset()
9120 map = &obj->maps[i]; in find_struct_ops_map_by_offset()
9123 if (map->sec_idx == sec_idx && in find_struct_ops_map_by_offset()
9124 map->sec_offset <= offset && in find_struct_ops_map_by_offset()
9125 offset - map->sec_offset < map->def.value_size) in find_struct_ops_map_by_offset()
9132 /* Collect the reloc from ELF and populate the st_ops->progs[] */
9149 btf = obj->btf; in bpf_object__collect_st_ops_relos()
9150 nrels = shdr->sh_size / shdr->sh_entsize; in bpf_object__collect_st_ops_relos()
9155 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_st_ops_relos()
9158 sym = elf_sym_by_idx(obj, ELF64_R_SYM(rel->r_info)); in bpf_object__collect_st_ops_relos()
9161 (size_t)ELF64_R_SYM(rel->r_info)); in bpf_object__collect_st_ops_relos()
9162 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_st_ops_relos()
9165 name = elf_sym_str(obj, sym->st_name) ?: "<?>"; in bpf_object__collect_st_ops_relos()
9166 map = find_struct_ops_map_by_offset(obj, shdr->sh_info, rel->r_offset); in bpf_object__collect_st_ops_relos()
9168 pr_warn("struct_ops reloc: cannot find map at rel->r_offset %zu\n", in bpf_object__collect_st_ops_relos()
9169 (size_t)rel->r_offset); in bpf_object__collect_st_ops_relos()
9170 return -EINVAL; in bpf_object__collect_st_ops_relos()
9173 moff = rel->r_offset - map->sec_offset; in bpf_object__collect_st_ops_relos()
9174 shdr_idx = sym->st_shndx; in bpf_object__collect_st_ops_relos()
9175 st_ops = map->st_ops; in bpf_object__collect_st_ops_relos()
9176 …pr_debug("struct_ops reloc %s: for %lld value %lld shdr_idx %u rel->r_offset %zu map->sec_offset %… in bpf_object__collect_st_ops_relos()
9177 map->name, in bpf_object__collect_st_ops_relos()
9178 (long long)(rel->r_info >> 32), in bpf_object__collect_st_ops_relos()
9179 (long long)sym->st_value, in bpf_object__collect_st_ops_relos()
9180 shdr_idx, (size_t)rel->r_offset, in bpf_object__collect_st_ops_relos()
9181 map->sec_offset, sym->st_name, name); in bpf_object__collect_st_ops_relos()
9184 pr_warn("struct_ops reloc %s: rel->r_offset %zu shdr_idx %u unsupported non-static function\n", in bpf_object__collect_st_ops_relos()
9185 map->name, (size_t)rel->r_offset, shdr_idx); in bpf_object__collect_st_ops_relos()
9186 return -LIBBPF_ERRNO__RELOC; in bpf_object__collect_st_ops_relos()
9188 if (sym->st_value % BPF_INSN_SZ) { in bpf_object__collect_st_ops_relos()
9190 map->name, (unsigned long long)sym->st_value); in bpf_object__collect_st_ops_relos()
9191 return -LIBBPF_ERRNO__FORMAT; in bpf_object__collect_st_ops_relos()
9193 insn_idx = sym->st_value / BPF_INSN_SZ; in bpf_object__collect_st_ops_relos()
9195 member = find_member_by_offset(st_ops->type, moff * 8); in bpf_object__collect_st_ops_relos()
9198 map->name, moff); in bpf_object__collect_st_ops_relos()
9199 return -EINVAL; in bpf_object__collect_st_ops_relos()
9201 member_idx = member - btf_members(st_ops->type); in bpf_object__collect_st_ops_relos()
9202 name = btf__name_by_offset(btf, member->name_off); in bpf_object__collect_st_ops_relos()
9204 if (!resolve_func_ptr(btf, member->type, NULL)) { in bpf_object__collect_st_ops_relos()
9206 map->name, name); in bpf_object__collect_st_ops_relos()
9207 return -EINVAL; in bpf_object__collect_st_ops_relos()
9213 map->name, shdr_idx, name); in bpf_object__collect_st_ops_relos()
9214 return -EINVAL; in bpf_object__collect_st_ops_relos()
9218 if (prog->type != BPF_PROG_TYPE_STRUCT_OPS) { in bpf_object__collect_st_ops_relos()
9220 map->name, prog->name); in bpf_object__collect_st_ops_relos()
9221 return -EINVAL; in bpf_object__collect_st_ops_relos()
9227 if (!prog->attach_btf_id) { in bpf_object__collect_st_ops_relos()
9228 prog->attach_btf_id = st_ops->type_id; in bpf_object__collect_st_ops_relos()
9229 prog->expected_attach_type = member_idx; in bpf_object__collect_st_ops_relos()
9232 /* struct_ops BPF prog can be re-used between multiple in bpf_object__collect_st_ops_relos()
9237 if (prog->attach_btf_id != st_ops->type_id || in bpf_object__collect_st_ops_relos()
9238 prog->expected_attach_type != member_idx) { in bpf_object__collect_st_ops_relos()
9240 map->name, prog->name, prog->sec_name, prog->type, in bpf_object__collect_st_ops_relos()
9241 prog->attach_btf_id, prog->expected_attach_type, name); in bpf_object__collect_st_ops_relos()
9242 return -EINVAL; in bpf_object__collect_st_ops_relos()
9245 st_ops->progs[member_idx] = prog; in bpf_object__collect_st_ops_relos()
9292 return -ENAMETOOLONG; in find_btf_by_prefix_kind()
9342 err = -EINVAL; in libbpf_find_prog_btf_id()
9369 ret = find_attach_btf_id(obj->btf_vmlinux, attach_name, attach_type); in find_kernel_btf_id()
9375 if (ret != -ENOENT) in find_kernel_btf_id()
9382 for (i = 0; i < obj->btf_module_cnt; i++) { in find_kernel_btf_id()
9383 const struct module_btf *mod = &obj->btf_modules[i]; in find_kernel_btf_id()
9385 ret = find_attach_btf_id(mod->btf, attach_name, attach_type); in find_kernel_btf_id()
9387 *btf_obj_fd = mod->fd; in find_kernel_btf_id()
9391 if (ret == -ENOENT) in find_kernel_btf_id()
9397 return -ESRCH; in find_kernel_btf_id()
9403 enum bpf_attach_type attach_type = prog->expected_attach_type; in libbpf_find_attach_btf_id()
9404 __u32 attach_prog_fd = prog->attach_prog_fd; in libbpf_find_attach_btf_id()
9408 if (prog->type == BPF_PROG_TYPE_EXT || attach_prog_fd) { in libbpf_find_attach_btf_id()
9410 pr_warn("prog '%s': attach program FD is not set\n", prog->name); in libbpf_find_attach_btf_id()
9411 return -EINVAL; in libbpf_find_attach_btf_id()
9416 prog->name, attach_prog_fd, attach_name, err); in libbpf_find_attach_btf_id()
9425 if (prog->obj->gen_loader) { in libbpf_find_attach_btf_id()
9426 bpf_gen__record_attach_target(prog->obj->gen_loader, attach_name, attach_type); in libbpf_find_attach_btf_id()
9430 err = find_kernel_btf_id(prog->obj, attach_name, attach_type, btf_obj_fd, btf_type_id); in libbpf_find_attach_btf_id()
9434 prog->name, attach_name, err); in libbpf_find_attach_btf_id()
9447 return libbpf_err(-EINVAL); in libbpf_attach_type_by_name()
9458 return libbpf_err(-EINVAL); in libbpf_attach_type_by_name()
9461 if (sec_def->prog_prepare_load_fn != libbpf_prepare_prog_load) in libbpf_attach_type_by_name()
9462 return libbpf_err(-EINVAL); in libbpf_attach_type_by_name()
9463 if (!(sec_def->cookie & SEC_ATTACHABLE)) in libbpf_attach_type_by_name()
9464 return libbpf_err(-EINVAL); in libbpf_attach_type_by_name()
9466 *attach_type = sec_def->expected_attach_type; in libbpf_attach_type_by_name()
9472 return map ? map->fd : libbpf_err(-EINVAL); in bpf_map__fd()
9478 * their user-visible name differs from kernel-visible name. Users see in map_uses_real_name()
9483 if (map->libbpf_type == LIBBPF_MAP_DATA && strcmp(map->real_name, DATA_SEC) != 0) in map_uses_real_name()
9485 if (map->libbpf_type == LIBBPF_MAP_RODATA && strcmp(map->real_name, RODATA_SEC) != 0) in map_uses_real_name()
9496 return map->real_name; in bpf_map__name()
9498 return map->name; in bpf_map__name()
9503 return map->def.type; in bpf_map__type()
9508 if (map->fd >= 0) in bpf_map__set_type()
9509 return libbpf_err(-EBUSY); in bpf_map__set_type()
9510 map->def.type = type; in bpf_map__set_type()
9516 return map->def.map_flags; in bpf_map__map_flags()
9521 if (map->fd >= 0) in bpf_map__set_map_flags()
9522 return libbpf_err(-EBUSY); in bpf_map__set_map_flags()
9523 map->def.map_flags = flags; in bpf_map__set_map_flags()
9529 return map->map_extra; in bpf_map__map_extra()
9534 if (map->fd >= 0) in bpf_map__set_map_extra()
9535 return libbpf_err(-EBUSY); in bpf_map__set_map_extra()
9536 map->map_extra = map_extra; in bpf_map__set_map_extra()
9542 return map->numa_node; in bpf_map__numa_node()
9547 if (map->fd >= 0) in bpf_map__set_numa_node()
9548 return libbpf_err(-EBUSY); in bpf_map__set_numa_node()
9549 map->numa_node = numa_node; in bpf_map__set_numa_node()
9555 return map->def.key_size; in bpf_map__key_size()
9560 if (map->fd >= 0) in bpf_map__set_key_size()
9561 return libbpf_err(-EBUSY); in bpf_map__set_key_size()
9562 map->def.key_size = size; in bpf_map__set_key_size()
9568 return map->def.value_size; in bpf_map__value_size()
9582 btf = bpf_object__btf(map->obj); in map_btf_datasec_resize()
9584 return -ENOENT; in map_btf_datasec_resize()
9591 return -EINVAL; in map_btf_datasec_resize()
9599 return -EINVAL; in map_btf_datasec_resize()
9603 var = &btf_var_secinfos(datasec_type)[vlen - 1]; in map_btf_datasec_resize()
9604 var_type = btf_type_by_id(btf, var->type); in map_btf_datasec_resize()
9605 array_type = skip_mods_and_typedefs(btf, var_type->type, NULL); in map_btf_datasec_resize()
9609 return -EINVAL; in map_btf_datasec_resize()
9614 element_sz = btf__resolve_size(btf, array->type); in map_btf_datasec_resize()
9615 if (element_sz <= 0 || (size - var->offset) % element_sz != 0) { in map_btf_datasec_resize()
9618 return -EINVAL; in map_btf_datasec_resize()
9622 nr_elements = (size - var->offset) / element_sz; in map_btf_datasec_resize()
9623 new_array_id = btf__add_array(btf, array->index_type, array->type, nr_elements); in map_btf_datasec_resize()
9630 datasec_type = btf_type_by_id(btf, map->btf_value_type_id); in map_btf_datasec_resize()
9631 var = &btf_var_secinfos(datasec_type)[vlen - 1]; in map_btf_datasec_resize()
9632 var_type = btf_type_by_id(btf, var->type); in map_btf_datasec_resize()
9635 datasec_type->size = size; in map_btf_datasec_resize()
9636 var->size = size - var->offset; in map_btf_datasec_resize()
9637 var_type->type = new_array_id; in map_btf_datasec_resize()
9644 if (map->fd >= 0) in bpf_map__set_value_size()
9645 return libbpf_err(-EBUSY); in bpf_map__set_value_size()
9647 if (map->mmaped) { in bpf_map__set_value_size()
9651 mmap_old_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries); in bpf_map__set_value_size()
9652 mmap_new_sz = bpf_map_mmap_sz(size, map->def.max_entries); in bpf_map__set_value_size()
9655 pr_warn("map '%s': failed to resize memory-mapped region: %d\n", in bpf_map__set_value_size()
9660 if (err && err != -ENOENT) { in bpf_map__set_value_size()
9663 map->btf_value_type_id = 0; in bpf_map__set_value_size()
9664 map->btf_key_type_id = 0; in bpf_map__set_value_size()
9668 map->def.value_size = size; in bpf_map__set_value_size()
9674 return map ? map->btf_key_type_id : 0; in bpf_map__btf_key_type_id()
9679 return map ? map->btf_value_type_id : 0; in bpf_map__btf_value_type_id()
9685 if (!map->mmaped || map->libbpf_type == LIBBPF_MAP_KCONFIG || in bpf_map__set_initial_value()
9686 size != map->def.value_size || map->fd >= 0) in bpf_map__set_initial_value()
9687 return libbpf_err(-EINVAL); in bpf_map__set_initial_value()
9689 memcpy(map->mmaped, data, size); in bpf_map__set_initial_value()
9695 if (!map->mmaped) in bpf_map__initial_value()
9697 *psize = map->def.value_size; in bpf_map__initial_value()
9698 return map->mmaped; in bpf_map__initial_value()
9703 return map->libbpf_type != LIBBPF_MAP_UNSPEC; in bpf_map__is_internal()
9708 return map->map_ifindex; in bpf_map__ifindex()
9713 if (map->fd >= 0) in bpf_map__set_ifindex()
9714 return libbpf_err(-EBUSY); in bpf_map__set_ifindex()
9715 map->map_ifindex = ifindex; in bpf_map__set_ifindex()
9721 if (!bpf_map_type__is_map_in_map(map->def.type)) { in bpf_map__set_inner_map_fd()
9723 return libbpf_err(-EINVAL); in bpf_map__set_inner_map_fd()
9725 if (map->inner_map_fd != -1) { in bpf_map__set_inner_map_fd()
9727 return libbpf_err(-EINVAL); in bpf_map__set_inner_map_fd()
9729 if (map->inner_map) { in bpf_map__set_inner_map_fd()
9730 bpf_map__destroy(map->inner_map); in bpf_map__set_inner_map_fd()
9731 zfree(&map->inner_map); in bpf_map__set_inner_map_fd()
9733 map->inner_map_fd = fd; in bpf_map__set_inner_map_fd()
9743 if (!obj || !obj->maps) in __bpf_map__iter()
9746 s = obj->maps; in __bpf_map__iter()
9747 e = obj->maps + obj->nr_maps; in __bpf_map__iter()
9755 idx = (m - obj->maps) + i; in __bpf_map__iter()
9756 if (idx >= obj->nr_maps || idx < 0) in __bpf_map__iter()
9758 return &obj->maps[idx]; in __bpf_map__iter()
9765 return obj->maps; in bpf_object__next_map()
9774 if (!obj->nr_maps) in bpf_object__prev_map()
9776 return obj->maps + obj->nr_maps - 1; in bpf_object__prev_map()
9779 return __bpf_map__iter(next, obj, -1); in bpf_object__prev_map()
9793 if (pos->real_name && strcmp(pos->real_name, name) == 0) in bpf_object__find_map_by_name()
9799 if (strcmp(pos->real_name, name) == 0) in bpf_object__find_map_by_name()
9803 if (strcmp(pos->name, name) == 0) in bpf_object__find_map_by_name()
9818 if (map->fd <= 0) in validate_map_op()
9819 return -ENOENT; in validate_map_op()
9821 if (map->def.key_size != key_sz) { in validate_map_op()
9823 map->name, key_sz, map->def.key_size); in validate_map_op()
9824 return -EINVAL; in validate_map_op()
9830 switch (map->def.type) { in validate_map_op()
9836 size_t elem_sz = roundup(map->def.value_size, 8); in validate_map_op()
9839 … pr_warn("map '%s': unexpected value size %zu provided for per-CPU map, expected %d * %zu = %zd\n", in validate_map_op()
9840 map->name, value_sz, num_cpu, elem_sz, num_cpu * elem_sz); in validate_map_op()
9841 return -EINVAL; in validate_map_op()
9846 if (map->def.value_size != value_sz) { in validate_map_op()
9848 map->name, value_sz, map->def.value_size); in validate_map_op()
9849 return -EINVAL; in validate_map_op()
9866 return bpf_map_lookup_elem_flags(map->fd, key, value, flags); in bpf_map__lookup_elem()
9879 return bpf_map_update_elem(map->fd, key, value, flags); in bpf_map__update_elem()
9891 return bpf_map_delete_elem_flags(map->fd, key, flags); in bpf_map__delete_elem()
9904 return bpf_map_lookup_and_delete_elem_flags(map->fd, key, value, flags); in bpf_map__lookup_and_delete_elem()
9916 return bpf_map_get_next_key(map->fd, cur_key, next_key); in bpf_map__get_next_key()
9925 errno = -PTR_ERR(ptr); in libbpf_get_error()
9932 return -errno; in libbpf_get_error()
9956 link->disconnected = true; in bpf_link__disconnect()
9966 if (!link->disconnected && link->detach) in bpf_link__destroy()
9967 err = link->detach(link); in bpf_link__destroy()
9968 if (link->pin_path) in bpf_link__destroy()
9969 free(link->pin_path); in bpf_link__destroy()
9970 if (link->dealloc) in bpf_link__destroy()
9971 link->dealloc(link); in bpf_link__destroy()
9980 return link->fd; in bpf_link__fd()
9985 return link->pin_path; in bpf_link__pin_path()
9990 return libbpf_err_errno(close(link->fd)); in bpf_link__detach_fd()
10000 fd = -errno; in bpf_link__open()
10008 return libbpf_err_ptr(-ENOMEM); in bpf_link__open()
10010 link->detach = &bpf_link__detach_fd; in bpf_link__open()
10011 link->fd = fd; in bpf_link__open()
10013 link->pin_path = strdup(path); in bpf_link__open()
10014 if (!link->pin_path) { in bpf_link__open()
10016 return libbpf_err_ptr(-ENOMEM); in bpf_link__open()
10024 return bpf_link_detach(link->fd) ? -errno : 0; in bpf_link__detach()
10031 if (link->pin_path) in bpf_link__pin()
10032 return libbpf_err(-EBUSY); in bpf_link__pin()
10040 link->pin_path = strdup(path); in bpf_link__pin()
10041 if (!link->pin_path) in bpf_link__pin()
10042 return libbpf_err(-ENOMEM); in bpf_link__pin()
10044 if (bpf_obj_pin(link->fd, link->pin_path)) { in bpf_link__pin()
10045 err = -errno; in bpf_link__pin()
10046 zfree(&link->pin_path); in bpf_link__pin()
10050 pr_debug("link fd=%d: pinned at %s\n", link->fd, link->pin_path); in bpf_link__pin()
10058 if (!link->pin_path) in bpf_link__unpin()
10059 return libbpf_err(-EINVAL); in bpf_link__unpin()
10061 err = unlink(link->pin_path); in bpf_link__unpin()
10063 return -errno; in bpf_link__unpin()
10065 pr_debug("link fd=%d: unpinned from %s\n", link->fd, link->pin_path); in bpf_link__unpin()
10066 zfree(&link->pin_path); in bpf_link__unpin()
10087 if (ioctl(perf_link->perf_event_fd, PERF_EVENT_IOC_DISABLE, 0) < 0) in bpf_link_perf_detach()
10088 err = -errno; in bpf_link_perf_detach()
10090 if (perf_link->perf_event_fd != link->fd) in bpf_link_perf_detach()
10091 close(perf_link->perf_event_fd); in bpf_link_perf_detach()
10092 close(link->fd); in bpf_link_perf_detach()
10095 if (perf_link->legacy_probe_name) { in bpf_link_perf_detach()
10096 if (perf_link->legacy_is_kprobe) { in bpf_link_perf_detach()
10097 err = remove_kprobe_event_legacy(perf_link->legacy_probe_name, in bpf_link_perf_detach()
10098 perf_link->legacy_is_retprobe); in bpf_link_perf_detach()
10100 err = remove_uprobe_event_legacy(perf_link->legacy_probe_name, in bpf_link_perf_detach()
10101 perf_link->legacy_is_retprobe); in bpf_link_perf_detach()
10112 free(perf_link->legacy_probe_name); in bpf_link_perf_dealloc()
10121 int prog_fd, link_fd = -1, err; in bpf_program__attach_perf_event_opts()
10125 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_perf_event_opts()
10129 prog->name, pfd); in bpf_program__attach_perf_event_opts()
10130 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_perf_event_opts()
10135 prog->name); in bpf_program__attach_perf_event_opts()
10136 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_perf_event_opts()
10141 return libbpf_err_ptr(-ENOMEM); in bpf_program__attach_perf_event_opts()
10142 link->link.detach = &bpf_link_perf_detach; in bpf_program__attach_perf_event_opts()
10143 link->link.dealloc = &bpf_link_perf_dealloc; in bpf_program__attach_perf_event_opts()
10144 link->perf_event_fd = pfd; in bpf_program__attach_perf_event_opts()
10147 if (kernel_supports(prog->obj, FEAT_PERF_LINK) && !force_ioctl_attach) { in bpf_program__attach_perf_event_opts()
10153 err = -errno; in bpf_program__attach_perf_event_opts()
10155 prog->name, pfd, in bpf_program__attach_perf_event_opts()
10159 link->link.fd = link_fd; in bpf_program__attach_perf_event_opts()
10162 pr_warn("prog '%s': user context value is not supported\n", prog->name); in bpf_program__attach_perf_event_opts()
10163 err = -EOPNOTSUPP; in bpf_program__attach_perf_event_opts()
10168 err = -errno; in bpf_program__attach_perf_event_opts()
10170 prog->name, pfd, libbpf_strerror_r(err, errmsg, sizeof(errmsg))); in bpf_program__attach_perf_event_opts()
10171 if (err == -EPROTO) in bpf_program__attach_perf_event_opts()
10173 prog->name, pfd); in bpf_program__attach_perf_event_opts()
10176 link->link.fd = pfd; in bpf_program__attach_perf_event_opts()
10179 err = -errno; in bpf_program__attach_perf_event_opts()
10181 prog->name, pfd, libbpf_strerror_r(err, errmsg, sizeof(errmsg))); in bpf_program__attach_perf_event_opts()
10185 return &link->link; in bpf_program__attach_perf_event_opts()
10199 * this function is expected to parse integer in the range of [0, 2^31-1] from
10211 err = -errno; in parse_uint_from_file()
10218 err = err == EOF ? -EIO : -errno; in parse_uint_from_file()
10268 return -EINVAL; in perf_event_open_probe()
10300 pid < 0 ? -1 : pid /* pid */, in perf_event_open_probe()
10301 pid == -1 ? 0 : -1 /* cpu */, in perf_event_open_probe()
10302 -1 /* group_fd */, PERF_FLAG_FD_CLOEXEC); in perf_event_open_probe()
10303 return pfd >= 0 ? pfd : -errno; in perf_event_open_probe()
10317 return -EINVAL; in append_to_file()
10321 return -errno; in append_to_file()
10324 err = -errno; in append_to_file()
10335 static int has_debugfs = -1; in use_debugfs()
10397 return append_to_file(tracefs_kprobe_events(), "-:%s/%s", in remove_kprobe_event_legacy()
10441 pid < 0 ? -1 : pid, /* pid */ in perf_event_kprobe_open_legacy()
10442 pid == -1 ? 0 : -1, /* cpu */ in perf_event_kprobe_open_legacy()
10443 -1 /* group_fd */, PERF_FLAG_FD_CLOEXEC); in perf_event_kprobe_open_legacy()
10445 err = -errno; in perf_event_kprobe_open_legacy()
10475 return "riscv"; in arch_specific_syscall_pfx()
10531 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_kprobe_opts()
10546 return libbpf_err_ptr(-ENOTSUP); in bpf_program__attach_kprobe_opts()
10550 if (legacy || !kernel_supports(prog->obj, FEAT_PERF_LINK)) in bpf_program__attach_kprobe_opts()
10551 return libbpf_err_ptr(-ENOTSUP); in bpf_program__attach_kprobe_opts()
10556 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_kprobe_opts()
10562 -1 /* pid */, 0 /* ref_ctr_off */); in bpf_program__attach_kprobe_opts()
10571 return libbpf_err_ptr(-ENOMEM); in bpf_program__attach_kprobe_opts()
10574 offset, -1 /* pid */); in bpf_program__attach_kprobe_opts()
10577 err = -errno; in bpf_program__attach_kprobe_opts()
10579 prog->name, retprobe ? "kretprobe" : "kprobe", in bpf_program__attach_kprobe_opts()
10589 prog->name, retprobe ? "kretprobe" : "kprobe", in bpf_program__attach_kprobe_opts()
10597 perf_link->legacy_probe_name = legacy_probe; in bpf_program__attach_kprobe_opts()
10598 perf_link->legacy_is_kprobe = true; in bpf_program__attach_kprobe_opts()
10599 perf_link->legacy_is_retprobe = retprobe; in bpf_program__attach_kprobe_opts()
10631 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_ksyscall()
10633 if (kernel_supports(prog->obj, FEAT_SYSCALL_WRAPPER)) { in bpf_program__attach_ksyscall()
10700 struct kprobe_multi_resolve *res = data->res; in avail_kallsyms_cb()
10703 if (!bsearch(&sym_name, data->syms, data->cnt, sizeof(*data->syms), avail_func_cmp)) in avail_kallsyms_cb()
10706 err = libbpf_ensure_mem((void **)&res->addrs, &res->cap, sizeof(*res->addrs), res->cnt + 1); in avail_kallsyms_cb()
10710 res->addrs[res->cnt++] = (unsigned long)sym_addr; in avail_kallsyms_cb()
10726 err = -errno; in libbpf_available_kallsyms_parse()
10740 err = -EINVAL; in libbpf_available_kallsyms_parse()
10744 if (!glob_match(sym_name, res->pattern)) in libbpf_available_kallsyms_parse()
10753 err = -errno; in libbpf_available_kallsyms_parse()
10762 err = -ENOENT; in libbpf_available_kallsyms_parse()
10774 if (res->cnt == 0) in libbpf_available_kallsyms_parse()
10775 err = -ENOENT; in libbpf_available_kallsyms_parse()
10788 return access(tracefs_available_filter_functions_addrs(), R_OK) != -1; in has_available_filter_functions_addrs()
10801 err = -errno; in libbpf_available_kprobes_parse()
10814 err = -EINVAL; in libbpf_available_kprobes_parse()
10818 if (!glob_match(sym_name, res->pattern)) in libbpf_available_kprobes_parse()
10821 err = libbpf_ensure_mem((void **)&res->addrs, &res->cap, in libbpf_available_kprobes_parse()
10822 sizeof(*res->addrs), res->cnt + 1); in libbpf_available_kprobes_parse()
10826 res->addrs[res->cnt++] = (unsigned long)sym_addr; in libbpf_available_kprobes_parse()
10829 if (res->cnt == 0) in libbpf_available_kprobes_parse()
10830 err = -ENOENT; in libbpf_available_kprobes_parse()
10856 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_kprobe_multi_opts()
10864 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_kprobe_multi_opts()
10866 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_kprobe_multi_opts()
10868 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_kprobe_multi_opts()
10870 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_kprobe_multi_opts()
10893 err = -ENOMEM; in bpf_program__attach_kprobe_multi_opts()
10896 link->detach = &bpf_link__detach_fd; in bpf_program__attach_kprobe_multi_opts()
10901 err = -errno; in bpf_program__attach_kprobe_multi_opts()
10903 prog->name, libbpf_strerror_r(err, errmsg, sizeof(errmsg))); in bpf_program__attach_kprobe_multi_opts()
10906 link->fd = link_fd; in bpf_program__attach_kprobe_multi_opts()
10926 /* no auto-attach for SEC("kprobe") and SEC("kretprobe") */ in attach_kprobe()
10927 if (strcmp(prog->sec_name, "kprobe") == 0 || strcmp(prog->sec_name, "kretprobe") == 0) in attach_kprobe()
10930 opts.retprobe = str_has_pfx(prog->sec_name, "kretprobe/"); in attach_kprobe()
10932 func_name = prog->sec_name + sizeof("kretprobe/") - 1; in attach_kprobe()
10934 func_name = prog->sec_name + sizeof("kprobe/") - 1; in attach_kprobe()
10936 n = sscanf(func_name, "%m[a-zA-Z0-9_.]+%li", &func, &offset); in attach_kprobe()
10939 return -EINVAL; in attach_kprobe()
10944 return -EINVAL; in attach_kprobe()
10960 /* no auto-attach for SEC("ksyscall") and SEC("kretsyscall") */ in attach_ksyscall()
10961 if (strcmp(prog->sec_name, "ksyscall") == 0 || strcmp(prog->sec_name, "kretsyscall") == 0) in attach_ksyscall()
10964 opts.retprobe = str_has_pfx(prog->sec_name, "kretsyscall/"); in attach_ksyscall()
10966 syscall_name = prog->sec_name + sizeof("kretsyscall/") - 1; in attach_ksyscall()
10968 syscall_name = prog->sec_name + sizeof("ksyscall/") - 1; in attach_ksyscall()
10971 return *link ? 0 : -errno; in attach_ksyscall()
10977 const char *spec; in attach_kprobe_multi() local
10983 /* no auto-attach for SEC("kprobe.multi") and SEC("kretprobe.multi") */ in attach_kprobe_multi()
10984 if (strcmp(prog->sec_name, "kprobe.multi") == 0 || in attach_kprobe_multi()
10985 strcmp(prog->sec_name, "kretprobe.multi") == 0) in attach_kprobe_multi()
10988 opts.retprobe = str_has_pfx(prog->sec_name, "kretprobe.multi/"); in attach_kprobe_multi()
10990 spec = prog->sec_name + sizeof("kretprobe.multi/") - 1; in attach_kprobe_multi()
10992 spec = prog->sec_name + sizeof("kprobe.multi/") - 1; in attach_kprobe_multi()
10994 n = sscanf(spec, "%m[a-zA-Z0-9_.*?]", &pattern); in attach_kprobe_multi()
10996 pr_warn("kprobe multi pattern is invalid: %s\n", spec); in attach_kprobe_multi()
10997 return -EINVAL; in attach_kprobe_multi()
11009 int n, ret = -EINVAL; in attach_uprobe_multi()
11013 n = sscanf(prog->sec_name, "%m[^/]/%m[^:]:%ms", in attach_uprobe_multi()
11017 /* handle SEC("u[ret]probe") - format is valid, but auto-attach is impossible. */ in attach_uprobe_multi()
11022 *link = bpf_program__attach_uprobe_multi(prog, -1, binary_path, func_name, &opts); in attach_uprobe_multi()
11026 pr_warn("prog '%s': invalid format of section definition '%s'\n", prog->name, in attach_uprobe_multi()
11027 prog->sec_name); in attach_uprobe_multi()
11061 return append_to_file(tracefs_uprobe_events(), "-:%s/%s", in remove_uprobe_event_legacy()
11102 pid < 0 ? -1 : pid, /* pid */ in perf_event_uprobe_open_legacy()
11103 pid == -1 ? 0 : -1, /* cpu */ in perf_event_uprobe_open_legacy()
11104 -1 /* group_fd */, PERF_FLAG_FD_CLOEXEC); in perf_event_uprobe_open_legacy()
11106 err = -errno; in perf_event_uprobe_open_legacy()
11154 ret = -LIBBPF_ERRNO__FORMAT; in elf_find_func_offset_from_archive()
11161 elf_errmsg(-1)); in elf_find_func_offset_from_archive()
11162 ret = -LIBBPF_ERRNO__LIBELF; in elf_find_func_offset_from_archive()
11189 return "/lib/x86_64-linux-gnu"; in arch_specific_lib_paths()
11191 return "/lib/i386-linux-gnu"; in arch_specific_lib_paths()
11193 return "/lib/s390x-linux-gnu"; in arch_specific_lib_paths()
11195 return "/lib/s390-linux-gnu"; in arch_specific_lib_paths()
11197 return "/lib/arm-linux-gnueabi"; in arch_specific_lib_paths()
11199 return "/lib/arm-linux-gnueabihf"; in arch_specific_lib_paths()
11201 return "/lib/aarch64-linux-gnu"; in arch_specific_lib_paths()
11203 return "/lib/mips64el-linux-gnuabi64"; in arch_specific_lib_paths()
11205 return "/lib/mipsel-linux-gnu"; in arch_specific_lib_paths()
11207 return "/lib/powerpc64le-linux-gnu"; in arch_specific_lib_paths()
11209 return "/lib/sparc64-linux-gnu"; in arch_specific_lib_paths()
11211 return "/lib/riscv64-linux-gnu"; in arch_specific_lib_paths()
11246 seg_len = next_path ? next_path - s : strlen(s); in resolve_full_path()
11257 return -ENOENT; in resolve_full_path()
11279 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_multi()
11295 * - syms and offsets are mutually exclusive in bpf_program__attach_uprobe_multi()
11296 * - ref_ctr_offsets and cookies are optional in bpf_program__attach_uprobe_multi()
11302 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_multi()
11304 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_multi()
11308 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_multi()
11311 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_multi()
11319 prog->name, path, err); in bpf_program__attach_uprobe_multi()
11351 err = -ENOMEM; in bpf_program__attach_uprobe_multi()
11354 link->detach = &bpf_link__detach_fd; in bpf_program__attach_uprobe_multi()
11359 err = -errno; in bpf_program__attach_uprobe_multi()
11360 pr_warn("prog '%s': failed to attach multi-uprobe: %s\n", in bpf_program__attach_uprobe_multi()
11361 prog->name, libbpf_strerror_r(err, errmsg, sizeof(errmsg))); in bpf_program__attach_uprobe_multi()
11364 link->fd = link_fd; in bpf_program__attach_uprobe_multi()
11391 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_opts()
11399 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_opts()
11406 min(sizeof(full_path), (size_t)(archive_sep - binary_path + 1))); in bpf_program__attach_uprobe_opts()
11413 prog->name, binary_path, err); in bpf_program__attach_uprobe_opts()
11442 return libbpf_err_ptr(-ENOTSUP); in bpf_program__attach_uprobe_opts()
11446 if (legacy || !kernel_supports(prog->obj, FEAT_PERF_LINK)) in bpf_program__attach_uprobe_opts()
11447 return libbpf_err_ptr(-ENOTSUP); in bpf_program__attach_uprobe_opts()
11452 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_opts()
11462 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_uprobe_opts()
11469 return libbpf_err_ptr(-ENOMEM); in bpf_program__attach_uprobe_opts()
11475 err = -errno; in bpf_program__attach_uprobe_opts()
11477 prog->name, retprobe ? "uretprobe" : "uprobe", in bpf_program__attach_uprobe_opts()
11488 prog->name, retprobe ? "uretprobe" : "uprobe", in bpf_program__attach_uprobe_opts()
11496 perf_link->legacy_probe_name = legacy_probe; in bpf_program__attach_uprobe_opts()
11497 perf_link->legacy_is_kprobe = false; in bpf_program__attach_uprobe_opts()
11498 perf_link->legacy_is_retprobe = retprobe; in bpf_program__attach_uprobe_opts()
11510 /* Format of u[ret]probe section definition supporting auto-attach:
11517 * specified (and auto-attach is not possible) or the above format is specified for
11518 * auto-attach.
11524 int n, ret = -EINVAL; in attach_uprobe()
11529 n = sscanf(prog->sec_name, "%m[^/]/%m[^:]:%m[a-zA-Z0-9_.]+%li", in attach_uprobe()
11533 /* handle SEC("u[ret]probe") - format is valid, but auto-attach is impossible. */ in attach_uprobe()
11538 prog->name, prog->sec_name); in attach_uprobe()
11546 prog->name); in attach_uprobe()
11550 *link = bpf_program__attach_uprobe_opts(prog, -1, binary_path, offset, &opts); in attach_uprobe()
11554 pr_warn("prog '%s': invalid format of section definition '%s'\n", prog->name, in attach_uprobe()
11555 prog->sec_name); in attach_uprobe()
11581 struct bpf_object *obj = prog->obj; in bpf_program__attach_usdt()
11587 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_usdt()
11591 prog->name); in bpf_program__attach_usdt()
11592 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_usdt()
11596 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_usdt()
11602 prog->name, binary_path, err); in bpf_program__attach_usdt()
11611 if (IS_ERR(obj->usdt_man)) in bpf_program__attach_usdt()
11612 return libbpf_ptr(obj->usdt_man); in bpf_program__attach_usdt()
11613 if (!obj->usdt_man) { in bpf_program__attach_usdt()
11614 obj->usdt_man = usdt_manager_new(obj); in bpf_program__attach_usdt()
11615 if (IS_ERR(obj->usdt_man)) in bpf_program__attach_usdt()
11616 return libbpf_ptr(obj->usdt_man); in bpf_program__attach_usdt()
11620 link = usdt_manager_attach_usdt(obj->usdt_man, prog, pid, binary_path, in bpf_program__attach_usdt()
11636 /* no auto-attach for just SEC("usdt") */ in attach_usdt()
11645 err = -EINVAL; in attach_usdt()
11647 *link = bpf_program__attach_usdt(prog, -1 /* any process */, path, in attach_usdt()
11666 return -errno; in determine_tracepoint_id()
11670 return -E2BIG; in determine_tracepoint_id()
11696 pfd = syscall(__NR_perf_event_open, &attr, -1 /* pid */, 0 /* cpu */, in perf_event_open_tracepoint()
11697 -1 /* group_fd */, PERF_FLAG_FD_CLOEXEC); in perf_event_open_tracepoint()
11699 err = -errno; in perf_event_open_tracepoint()
11719 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_tracepoint_opts()
11726 prog->name, tp_category, tp_name, in bpf_program__attach_tracepoint_opts()
11735 prog->name, tp_category, tp_name, in bpf_program__attach_tracepoint_opts()
11755 /* no auto-attach for SEC("tp") or SEC("tracepoint") */ in attach_tp()
11756 if (strcmp(prog->sec_name, "tp") == 0 || strcmp(prog->sec_name, "tracepoint") == 0) in attach_tp()
11759 sec_name = strdup(prog->sec_name); in attach_tp()
11761 return -ENOMEM; in attach_tp()
11764 if (str_has_pfx(prog->sec_name, "tp/")) in attach_tp()
11765 tp_cat = sec_name + sizeof("tp/") - 1; in attach_tp()
11767 tp_cat = sec_name + sizeof("tracepoint/") - 1; in attach_tp()
11771 return -EINVAL; in attach_tp()
11790 pr_warn("prog '%s': can't attach before loaded\n", prog->name); in bpf_program__attach_raw_tracepoint()
11791 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_raw_tracepoint()
11796 return libbpf_err_ptr(-ENOMEM); in bpf_program__attach_raw_tracepoint()
11797 link->detach = &bpf_link__detach_fd; in bpf_program__attach_raw_tracepoint()
11801 pfd = -errno; in bpf_program__attach_raw_tracepoint()
11804 prog->name, tp_name, libbpf_strerror_r(pfd, errmsg, sizeof(errmsg))); in bpf_program__attach_raw_tracepoint()
11807 link->fd = pfd; in bpf_program__attach_raw_tracepoint()
11827 if (!str_has_pfx(prog->sec_name, prefixes[i])) in attach_raw_tp()
11831 /* no auto-attach case of, e.g., SEC("raw_tp") */ in attach_raw_tp()
11832 if (prog->sec_name[pfx_len] == '\0') in attach_raw_tp()
11835 if (prog->sec_name[pfx_len] != '/') in attach_raw_tp()
11838 tp_name = prog->sec_name + pfx_len + 1; in attach_raw_tp()
11844 prog->name, prog->sec_name); in attach_raw_tp()
11845 return -EINVAL; in attach_raw_tp()
11862 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_btf_id()
11866 pr_warn("prog '%s': can't attach before loaded\n", prog->name); in bpf_program__attach_btf_id()
11867 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_btf_id()
11872 return libbpf_err_ptr(-ENOMEM); in bpf_program__attach_btf_id()
11873 link->detach = &bpf_link__detach_fd; in bpf_program__attach_btf_id()
11879 pfd = -errno; in bpf_program__attach_btf_id()
11882 prog->name, libbpf_strerror_r(pfd, errmsg, sizeof(errmsg))); in bpf_program__attach_btf_id()
11885 link->fd = pfd; in bpf_program__attach_btf_id()
11929 pr_warn("prog '%s': can't attach before loaded\n", prog->name); in bpf_program_attach_fd()
11930 return libbpf_err_ptr(-EINVAL); in bpf_program_attach_fd()
11935 return libbpf_err_ptr(-ENOMEM); in bpf_program_attach_fd()
11936 link->detach = &bpf_link__detach_fd; in bpf_program_attach_fd()
11941 link_fd = -errno; in bpf_program_attach_fd()
11944 prog->name, target_name, in bpf_program_attach_fd()
11948 link->fd = link_fd; in bpf_program_attach_fd()
11979 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_tcx()
11984 /* validate we don't have unexpected combinations of non-zero fields */ in bpf_program__attach_tcx()
11987 prog->name); in bpf_program__attach_tcx()
11988 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_tcx()
11992 prog->name); in bpf_program__attach_tcx()
11993 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_tcx()
12013 prog->name); in bpf_program__attach_freplace()
12014 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_freplace()
12017 if (prog->type != BPF_PROG_TYPE_EXT) { in bpf_program__attach_freplace()
12019 prog->name); in bpf_program__attach_freplace()
12020 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_freplace()
12053 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_iter()
12060 pr_warn("prog '%s': can't attach before loaded\n", prog->name); in bpf_program__attach_iter()
12061 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_iter()
12066 return libbpf_err_ptr(-ENOMEM); in bpf_program__attach_iter()
12067 link->detach = &bpf_link__detach_fd; in bpf_program__attach_iter()
12072 link_fd = -errno; in bpf_program__attach_iter()
12075 prog->name, libbpf_strerror_r(link_fd, errmsg, sizeof(errmsg))); in bpf_program__attach_iter()
12078 link->fd = link_fd; in bpf_program__attach_iter()
12096 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_netfilter()
12100 pr_warn("prog '%s': can't attach before loaded\n", prog->name); in bpf_program__attach_netfilter()
12101 return libbpf_err_ptr(-EINVAL); in bpf_program__attach_netfilter()
12106 return libbpf_err_ptr(-ENOMEM); in bpf_program__attach_netfilter()
12108 link->detach = &bpf_link__detach_fd; in bpf_program__attach_netfilter()
12119 link_fd = -errno; in bpf_program__attach_netfilter()
12122 prog->name, libbpf_strerror_r(link_fd, errmsg, sizeof(errmsg))); in bpf_program__attach_netfilter()
12125 link->fd = link_fd; in bpf_program__attach_netfilter()
12135 if (!prog->sec_def || !prog->sec_def->prog_attach_fn) in bpf_program__attach()
12136 return libbpf_err_ptr(-EOPNOTSUPP); in bpf_program__attach()
12138 err = prog->sec_def->prog_attach_fn(prog, prog->sec_def->cookie, &link); in bpf_program__attach()
12142 /* When calling bpf_program__attach() explicitly, auto-attach support in bpf_program__attach()
12148 return libbpf_err_ptr(-EOPNOTSUPP); in bpf_program__attach()
12165 if (st_link->map_fd < 0) in bpf_link__detach_struct_ops()
12167 return bpf_map_delete_elem(link->fd, &zero); in bpf_link__detach_struct_ops()
12169 return close(link->fd); in bpf_link__detach_struct_ops()
12178 if (!bpf_map__is_struct_ops(map) || map->fd == -1) in bpf_map__attach_struct_ops()
12179 return libbpf_err_ptr(-EINVAL); in bpf_map__attach_struct_ops()
12183 return libbpf_err_ptr(-EINVAL); in bpf_map__attach_struct_ops()
12186 err = bpf_map_update_elem(map->fd, &zero, map->st_ops->kern_vdata, 0); in bpf_map__attach_struct_ops()
12192 if (err && (!(map->def.map_flags & BPF_F_LINK) || err != -EBUSY)) { in bpf_map__attach_struct_ops()
12197 link->link.detach = bpf_link__detach_struct_ops; in bpf_map__attach_struct_ops()
12199 if (!(map->def.map_flags & BPF_F_LINK)) { in bpf_map__attach_struct_ops()
12201 link->link.fd = map->fd; in bpf_map__attach_struct_ops()
12202 link->map_fd = -1; in bpf_map__attach_struct_ops()
12203 return &link->link; in bpf_map__attach_struct_ops()
12206 fd = bpf_link_create(map->fd, 0, BPF_STRUCT_OPS, NULL); in bpf_map__attach_struct_ops()
12212 link->link.fd = fd; in bpf_map__attach_struct_ops()
12213 link->map_fd = map->fd; in bpf_map__attach_struct_ops()
12215 return &link->link; in bpf_map__attach_struct_ops()
12227 if (!bpf_map__is_struct_ops(map) || map->fd < 0) in bpf_link__update_map()
12228 return -EINVAL; in bpf_link__update_map()
12232 if (st_ops_link->map_fd < 0) in bpf_link__update_map()
12233 return -EINVAL; in bpf_link__update_map()
12235 err = bpf_map_update_elem(map->fd, &zero, map->st_ops->kern_vdata, 0); in bpf_link__update_map()
12241 if (err && err != -EBUSY) in bpf_link__update_map()
12244 err = bpf_link_update(link->fd, map->fd, NULL); in bpf_link__update_map()
12248 st_ops_link->map_fd = map->fd; in bpf_link__update_map()
12263 __u64 data_tail = header->data_tail; in perf_event_read_simple()
12270 ehdr = base + (data_tail & (mmap_size - 1)); in perf_event_read_simple()
12271 ehdr_size = ehdr->size; in perf_event_read_simple()
12275 size_t len_first = base + mmap_size - copy_start; in perf_event_read_simple()
12276 size_t len_secnd = ehdr_size - len_first; in perf_event_read_simple()
12310 /* sample_cb and lost_cb are higher-level common-case callbacks */
12349 if (cpu_buf->base && in perf_buffer__free_cpu_buf()
12350 munmap(cpu_buf->base, pb->mmap_size + pb->page_size)) in perf_buffer__free_cpu_buf()
12351 pr_warn("failed to munmap cpu_buf #%d\n", cpu_buf->cpu); in perf_buffer__free_cpu_buf()
12352 if (cpu_buf->fd >= 0) { in perf_buffer__free_cpu_buf()
12353 ioctl(cpu_buf->fd, PERF_EVENT_IOC_DISABLE, 0); in perf_buffer__free_cpu_buf()
12354 close(cpu_buf->fd); in perf_buffer__free_cpu_buf()
12356 free(cpu_buf->buf); in perf_buffer__free_cpu_buf()
12366 if (pb->cpu_bufs) { in perf_buffer__free()
12367 for (i = 0; i < pb->cpu_cnt; i++) { in perf_buffer__free()
12368 struct perf_cpu_buf *cpu_buf = pb->cpu_bufs[i]; in perf_buffer__free()
12373 bpf_map_delete_elem(pb->map_fd, &cpu_buf->map_key); in perf_buffer__free()
12376 free(pb->cpu_bufs); in perf_buffer__free()
12378 if (pb->epoll_fd >= 0) in perf_buffer__free()
12379 close(pb->epoll_fd); in perf_buffer__free()
12380 free(pb->events); in perf_buffer__free()
12394 return ERR_PTR(-ENOMEM); in perf_buffer__open_cpu_buf()
12396 cpu_buf->pb = pb; in perf_buffer__open_cpu_buf()
12397 cpu_buf->cpu = cpu; in perf_buffer__open_cpu_buf()
12398 cpu_buf->map_key = map_key; in perf_buffer__open_cpu_buf()
12400 cpu_buf->fd = syscall(__NR_perf_event_open, attr, -1 /* pid */, cpu, in perf_buffer__open_cpu_buf()
12401 -1, PERF_FLAG_FD_CLOEXEC); in perf_buffer__open_cpu_buf()
12402 if (cpu_buf->fd < 0) { in perf_buffer__open_cpu_buf()
12403 err = -errno; in perf_buffer__open_cpu_buf()
12409 cpu_buf->base = mmap(NULL, pb->mmap_size + pb->page_size, in perf_buffer__open_cpu_buf()
12411 cpu_buf->fd, 0); in perf_buffer__open_cpu_buf()
12412 if (cpu_buf->base == MAP_FAILED) { in perf_buffer__open_cpu_buf()
12413 cpu_buf->base = NULL; in perf_buffer__open_cpu_buf()
12414 err = -errno; in perf_buffer__open_cpu_buf()
12420 if (ioctl(cpu_buf->fd, PERF_EVENT_IOC_ENABLE, 0) < 0) { in perf_buffer__open_cpu_buf()
12421 err = -errno; in perf_buffer__open_cpu_buf()
12449 return libbpf_err_ptr(-EINVAL); in perf_buffer__new()
12478 return libbpf_err_ptr(-EINVAL); in perf_buffer__new_raw()
12481 return libbpf_err_ptr(-EINVAL); in perf_buffer__new_raw()
12504 if (page_cnt == 0 || (page_cnt & (page_cnt - 1))) { in __perf_buffer__new()
12507 return ERR_PTR(-EINVAL); in __perf_buffer__new()
12510 /* best-effort sanity checks */ in __perf_buffer__new()
12515 err = -errno; in __perf_buffer__new()
12517 * -EBADFD, -EFAULT, or -E2BIG on real error in __perf_buffer__new()
12519 if (err != -EINVAL) { in __perf_buffer__new()
12530 return ERR_PTR(-EINVAL); in __perf_buffer__new()
12536 return ERR_PTR(-ENOMEM); in __perf_buffer__new()
12538 pb->event_cb = p->event_cb; in __perf_buffer__new()
12539 pb->sample_cb = p->sample_cb; in __perf_buffer__new()
12540 pb->lost_cb = p->lost_cb; in __perf_buffer__new()
12541 pb->ctx = p->ctx; in __perf_buffer__new()
12543 pb->page_size = getpagesize(); in __perf_buffer__new()
12544 pb->mmap_size = pb->page_size * page_cnt; in __perf_buffer__new()
12545 pb->map_fd = map_fd; in __perf_buffer__new()
12547 pb->epoll_fd = epoll_create1(EPOLL_CLOEXEC); in __perf_buffer__new()
12548 if (pb->epoll_fd < 0) { in __perf_buffer__new()
12549 err = -errno; in __perf_buffer__new()
12555 if (p->cpu_cnt > 0) { in __perf_buffer__new()
12556 pb->cpu_cnt = p->cpu_cnt; in __perf_buffer__new()
12558 pb->cpu_cnt = libbpf_num_possible_cpus(); in __perf_buffer__new()
12559 if (pb->cpu_cnt < 0) { in __perf_buffer__new()
12560 err = pb->cpu_cnt; in __perf_buffer__new()
12563 if (map.max_entries && map.max_entries < pb->cpu_cnt) in __perf_buffer__new()
12564 pb->cpu_cnt = map.max_entries; in __perf_buffer__new()
12567 pb->events = calloc(pb->cpu_cnt, sizeof(*pb->events)); in __perf_buffer__new()
12568 if (!pb->events) { in __perf_buffer__new()
12569 err = -ENOMEM; in __perf_buffer__new()
12573 pb->cpu_bufs = calloc(pb->cpu_cnt, sizeof(*pb->cpu_bufs)); in __perf_buffer__new()
12574 if (!pb->cpu_bufs) { in __perf_buffer__new()
12575 err = -ENOMEM; in __perf_buffer__new()
12586 for (i = 0, j = 0; i < pb->cpu_cnt; i++) { in __perf_buffer__new()
12590 cpu = p->cpu_cnt > 0 ? p->cpus[i] : i; in __perf_buffer__new()
12591 map_key = p->cpu_cnt > 0 ? p->map_keys[i] : i; in __perf_buffer__new()
12596 if (p->cpu_cnt <= 0 && (cpu >= n || !online[cpu])) in __perf_buffer__new()
12599 cpu_buf = perf_buffer__open_cpu_buf(pb, p->attr, cpu, map_key); in __perf_buffer__new()
12605 pb->cpu_bufs[j] = cpu_buf; in __perf_buffer__new()
12607 err = bpf_map_update_elem(pb->map_fd, &map_key, in __perf_buffer__new()
12608 &cpu_buf->fd, 0); in __perf_buffer__new()
12610 err = -errno; in __perf_buffer__new()
12611 pr_warn("failed to set cpu #%d, key %d -> perf FD %d: %s\n", in __perf_buffer__new()
12612 cpu, map_key, cpu_buf->fd, in __perf_buffer__new()
12617 pb->events[j].events = EPOLLIN; in __perf_buffer__new()
12618 pb->events[j].data.ptr = cpu_buf; in __perf_buffer__new()
12619 if (epoll_ctl(pb->epoll_fd, EPOLL_CTL_ADD, cpu_buf->fd, in __perf_buffer__new()
12620 &pb->events[j]) < 0) { in __perf_buffer__new()
12621 err = -errno; in __perf_buffer__new()
12623 cpu, cpu_buf->fd, in __perf_buffer__new()
12629 pb->cpu_cnt = j; in __perf_buffer__new()
12658 struct perf_buffer *pb = cpu_buf->pb; in perf_buffer__process_record()
12662 if (pb->event_cb) in perf_buffer__process_record()
12663 return pb->event_cb(pb->ctx, cpu_buf->cpu, e); in perf_buffer__process_record()
12665 switch (e->type) { in perf_buffer__process_record()
12669 if (pb->sample_cb) in perf_buffer__process_record()
12670 pb->sample_cb(pb->ctx, cpu_buf->cpu, s->data, s->size); in perf_buffer__process_record()
12676 if (pb->lost_cb) in perf_buffer__process_record()
12677 pb->lost_cb(pb->ctx, cpu_buf->cpu, s->lost); in perf_buffer__process_record()
12681 pr_warn("unknown perf sample type %d\n", e->type); in perf_buffer__process_record()
12692 ret = perf_event_read_simple(cpu_buf->base, pb->mmap_size, in perf_buffer__process_records()
12693 pb->page_size, &cpu_buf->buf, in perf_buffer__process_records()
12694 &cpu_buf->buf_size, in perf_buffer__process_records()
12703 return pb->epoll_fd; in perf_buffer__epoll_fd()
12710 cnt = epoll_wait(pb->epoll_fd, pb->events, pb->cpu_cnt, timeout_ms); in perf_buffer__poll()
12712 return -errno; in perf_buffer__poll()
12715 struct perf_cpu_buf *cpu_buf = pb->events[i].data.ptr; in perf_buffer__poll()
12731 return pb->cpu_cnt; in perf_buffer__buffer_cnt()
12743 if (buf_idx >= pb->cpu_cnt) in perf_buffer__buffer_fd()
12744 return libbpf_err(-EINVAL); in perf_buffer__buffer_fd()
12746 cpu_buf = pb->cpu_bufs[buf_idx]; in perf_buffer__buffer_fd()
12748 return libbpf_err(-ENOENT); in perf_buffer__buffer_fd()
12750 return cpu_buf->fd; in perf_buffer__buffer_fd()
12757 if (buf_idx >= pb->cpu_cnt) in perf_buffer__buffer()
12758 return libbpf_err(-EINVAL); in perf_buffer__buffer()
12760 cpu_buf = pb->cpu_bufs[buf_idx]; in perf_buffer__buffer()
12762 return libbpf_err(-ENOENT); in perf_buffer__buffer()
12764 *buf = cpu_buf->base; in perf_buffer__buffer()
12765 *buf_size = pb->mmap_size; in perf_buffer__buffer()
12774 * - 0 on success;
12775 * - <0 on failure.
12781 if (buf_idx >= pb->cpu_cnt) in perf_buffer__consume_buffer()
12782 return libbpf_err(-EINVAL); in perf_buffer__consume_buffer()
12784 cpu_buf = pb->cpu_bufs[buf_idx]; in perf_buffer__consume_buffer()
12786 return libbpf_err(-ENOENT); in perf_buffer__consume_buffer()
12795 for (i = 0; i < pb->cpu_cnt; i++) { in perf_buffer__consume()
12796 struct perf_cpu_buf *cpu_buf = pb->cpu_bufs[i]; in perf_buffer__consume()
12817 return libbpf_err(-EINVAL); in bpf_program__set_attach_target()
12819 if (prog->obj->loaded) in bpf_program__set_attach_target()
12820 return libbpf_err(-EINVAL); in bpf_program__set_attach_target()
12826 prog->attach_prog_fd = attach_prog_fd; in bpf_program__set_attach_target()
12837 return libbpf_err(-EINVAL); in bpf_program__set_attach_target()
12840 err = bpf_object__load_vmlinux_btf(prog->obj, true); in bpf_program__set_attach_target()
12843 err = find_kernel_btf_id(prog->obj, attach_func_name, in bpf_program__set_attach_target()
12844 prog->expected_attach_type, in bpf_program__set_attach_target()
12850 prog->attach_btf_id = btf_id; in bpf_program__set_attach_target()
12851 prog->attach_btf_obj_fd = btf_obj_fd; in bpf_program__set_attach_target()
12852 prog->attach_prog_fd = attach_prog_fd; in bpf_program__set_attach_target()
12858 int err = 0, n, len, start, end = -1; in parse_cpu_mask_str()
12864 /* Each sub string separated by ',' has format \d+-\d+ or \d+ */ in parse_cpu_mask_str()
12870 n = sscanf(s, "%d%n-%d%n", &start, &len, &end, &len); in parse_cpu_mask_str()
12873 err = -EINVAL; in parse_cpu_mask_str()
12881 err = -EINVAL; in parse_cpu_mask_str()
12886 err = -ENOMEM; in parse_cpu_mask_str()
12890 memset(tmp + *mask_sz, 0, start - *mask_sz); in parse_cpu_mask_str()
12891 memset(tmp + start, 1, end - start + 1); in parse_cpu_mask_str()
12897 return -EINVAL; in parse_cpu_mask_str()
12913 err = -errno; in parse_cpu_mask_file()
12920 err = len ? -errno : -EINVAL; in parse_cpu_mask_file()
12926 return -E2BIG; in parse_cpu_mask_file()
12973 return -ESRCH; in populate_skeleton_maps()
12976 /* externs shouldn't be pre-setup from user code */ in populate_skeleton_maps()
12977 if (mmaped && (*map)->libbpf_type != LIBBPF_MAP_KCONFIG) in populate_skeleton_maps()
12978 *mmaped = (*map)->mmaped; in populate_skeleton_maps()
12996 return -ESRCH; in populate_skeleton_progs()
13006 .object_name = s->name, in bpf_object__open_skeleton()
13011 /* Attempt to preserve opts->object_name, unless overriden by user in bpf_object__open_skeleton()
13019 if (!opts->object_name) in bpf_object__open_skeleton()
13020 skel_opts.object_name = s->name; in bpf_object__open_skeleton()
13023 obj = bpf_object__open_mem(s->data, s->data_sz, &skel_opts); in bpf_object__open_skeleton()
13027 s->name, err); in bpf_object__open_skeleton()
13031 *s->obj = obj; in bpf_object__open_skeleton()
13032 err = populate_skeleton_maps(obj, s->maps, s->map_cnt); in bpf_object__open_skeleton()
13034 pr_warn("failed to populate skeleton maps for '%s': %d\n", s->name, err); in bpf_object__open_skeleton()
13038 err = populate_skeleton_progs(obj, s->progs, s->prog_cnt); in bpf_object__open_skeleton()
13040 pr_warn("failed to populate skeleton progs for '%s': %d\n", s->name, err); in bpf_object__open_skeleton()
13058 if (!s->obj) in bpf_object__open_subskeleton()
13059 return libbpf_err(-EINVAL); in bpf_object__open_subskeleton()
13061 btf = bpf_object__btf(s->obj); in bpf_object__open_subskeleton()
13064 bpf_object__name(s->obj)); in bpf_object__open_subskeleton()
13065 return libbpf_err(-errno); in bpf_object__open_subskeleton()
13068 err = populate_skeleton_maps(s->obj, s->maps, s->map_cnt); in bpf_object__open_subskeleton()
13074 err = populate_skeleton_progs(s->obj, s->progs, s->prog_cnt); in bpf_object__open_subskeleton()
13080 for (var_idx = 0; var_idx < s->var_cnt; var_idx++) { in bpf_object__open_subskeleton()
13081 var_skel = &s->vars[var_idx]; in bpf_object__open_subskeleton()
13082 map = *var_skel->map; in bpf_object__open_subskeleton()
13090 return libbpf_err(-EINVAL); in bpf_object__open_subskeleton()
13096 var_type = btf__type_by_id(btf, var->type); in bpf_object__open_subskeleton()
13097 var_name = btf__name_by_offset(btf, var_type->name_off); in bpf_object__open_subskeleton()
13098 if (strcmp(var_name, var_skel->name) == 0) { in bpf_object__open_subskeleton()
13099 *var_skel->addr = map->mmaped + var->offset; in bpf_object__open_subskeleton()
13111 free(s->maps); in bpf_object__destroy_subskeleton()
13112 free(s->progs); in bpf_object__destroy_subskeleton()
13113 free(s->vars); in bpf_object__destroy_subskeleton()
13121 err = bpf_object__load(*s->obj); in bpf_object__load_skeleton()
13123 pr_warn("failed to load BPF skeleton '%s': %d\n", s->name, err); in bpf_object__load_skeleton()
13127 for (i = 0; i < s->map_cnt; i++) { in bpf_object__load_skeleton()
13128 struct bpf_map *map = *s->maps[i].map; in bpf_object__load_skeleton()
13129 size_t mmap_sz = bpf_map_mmap_sz(map->def.value_size, map->def.max_entries); in bpf_object__load_skeleton()
13131 void **mmaped = s->maps[i].mmaped; in bpf_object__load_skeleton()
13136 if (!(map->def.map_flags & BPF_F_MMAPABLE)) { in bpf_object__load_skeleton()
13141 if (map->def.map_flags & BPF_F_RDONLY_PROG) in bpf_object__load_skeleton()
13146 /* Remap anonymous mmap()-ed "map initialization image" as in bpf_object__load_skeleton()
13147 * a BPF map-backed mmap()-ed memory, but preserving the same in bpf_object__load_skeleton()
13156 *mmaped = mmap(map->mmaped, mmap_sz, prot, MAP_SHARED | MAP_FIXED, map_fd, 0); in bpf_object__load_skeleton()
13158 err = -errno; in bpf_object__load_skeleton()
13160 pr_warn("failed to re-mmap() map '%s': %d\n", in bpf_object__load_skeleton()
13173 for (i = 0; i < s->prog_cnt; i++) { in bpf_object__attach_skeleton()
13174 struct bpf_program *prog = *s->progs[i].prog; in bpf_object__attach_skeleton()
13175 struct bpf_link **link = s->progs[i].link; in bpf_object__attach_skeleton()
13177 if (!prog->autoload || !prog->autoattach) in bpf_object__attach_skeleton()
13180 /* auto-attaching not supported for this program */ in bpf_object__attach_skeleton()
13181 if (!prog->sec_def || !prog->sec_def->prog_attach_fn) in bpf_object__attach_skeleton()
13184 /* if user already set the link manually, don't attempt auto-attach */ in bpf_object__attach_skeleton()
13188 err = prog->sec_def->prog_attach_fn(prog, prog->sec_def->cookie, link); in bpf_object__attach_skeleton()
13190 pr_warn("prog '%s': failed to auto-attach: %d\n", in bpf_object__attach_skeleton()
13195 /* It's possible that for some SEC() definitions auto-attach in bpf_object__attach_skeleton()
13200 * auto-attached. But if not, it shouldn't trigger skeleton's in bpf_object__attach_skeleton()
13214 for (i = 0; i < s->prog_cnt; i++) { in bpf_object__detach_skeleton()
13215 struct bpf_link **link = s->progs[i].link; in bpf_object__detach_skeleton()
13227 if (s->progs) in bpf_object__destroy_skeleton()
13229 if (s->obj) in bpf_object__destroy_skeleton()
13230 bpf_object__close(*s->obj); in bpf_object__destroy_skeleton()
13231 free(s->maps); in bpf_object__destroy_skeleton()
13232 free(s->progs); in bpf_object__destroy_skeleton()