1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */ 3 4 #include <assert.h> 5 #include <errno.h> 6 #include <fcntl.h> 7 #include <linux/err.h> 8 #include <linux/kernel.h> 9 #include <net/if.h> 10 #include <stdbool.h> 11 #include <stdio.h> 12 #include <stdlib.h> 13 #include <string.h> 14 #include <unistd.h> 15 #include <sys/types.h> 16 #include <sys/stat.h> 17 18 #include <bpf/bpf.h> 19 #include <bpf/btf.h> 20 21 #include "json_writer.h" 22 #include "main.h" 23 24 const char * const map_type_name[] = { 25 [BPF_MAP_TYPE_UNSPEC] = "unspec", 26 [BPF_MAP_TYPE_HASH] = "hash", 27 [BPF_MAP_TYPE_ARRAY] = "array", 28 [BPF_MAP_TYPE_PROG_ARRAY] = "prog_array", 29 [BPF_MAP_TYPE_PERF_EVENT_ARRAY] = "perf_event_array", 30 [BPF_MAP_TYPE_PERCPU_HASH] = "percpu_hash", 31 [BPF_MAP_TYPE_PERCPU_ARRAY] = "percpu_array", 32 [BPF_MAP_TYPE_STACK_TRACE] = "stack_trace", 33 [BPF_MAP_TYPE_CGROUP_ARRAY] = "cgroup_array", 34 [BPF_MAP_TYPE_LRU_HASH] = "lru_hash", 35 [BPF_MAP_TYPE_LRU_PERCPU_HASH] = "lru_percpu_hash", 36 [BPF_MAP_TYPE_LPM_TRIE] = "lpm_trie", 37 [BPF_MAP_TYPE_ARRAY_OF_MAPS] = "array_of_maps", 38 [BPF_MAP_TYPE_HASH_OF_MAPS] = "hash_of_maps", 39 [BPF_MAP_TYPE_DEVMAP] = "devmap", 40 [BPF_MAP_TYPE_DEVMAP_HASH] = "devmap_hash", 41 [BPF_MAP_TYPE_SOCKMAP] = "sockmap", 42 [BPF_MAP_TYPE_CPUMAP] = "cpumap", 43 [BPF_MAP_TYPE_XSKMAP] = "xskmap", 44 [BPF_MAP_TYPE_SOCKHASH] = "sockhash", 45 [BPF_MAP_TYPE_CGROUP_STORAGE] = "cgroup_storage", 46 [BPF_MAP_TYPE_REUSEPORT_SOCKARRAY] = "reuseport_sockarray", 47 [BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE] = "percpu_cgroup_storage", 48 [BPF_MAP_TYPE_QUEUE] = "queue", 49 [BPF_MAP_TYPE_STACK] = "stack", 50 [BPF_MAP_TYPE_SK_STORAGE] = "sk_storage", 51 [BPF_MAP_TYPE_STRUCT_OPS] = "struct_ops", 52 [BPF_MAP_TYPE_RINGBUF] = "ringbuf", 53 }; 54 55 const size_t map_type_name_size = ARRAY_SIZE(map_type_name); 56 57 static bool map_is_per_cpu(__u32 type) 58 { 59 return type == BPF_MAP_TYPE_PERCPU_HASH || 60 type == BPF_MAP_TYPE_PERCPU_ARRAY || 61 type == BPF_MAP_TYPE_LRU_PERCPU_HASH || 62 type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE; 63 } 64 65 static bool map_is_map_of_maps(__u32 type) 66 { 67 return type == BPF_MAP_TYPE_ARRAY_OF_MAPS || 68 type == BPF_MAP_TYPE_HASH_OF_MAPS; 69 } 70 71 static bool map_is_map_of_progs(__u32 type) 72 { 73 return type == BPF_MAP_TYPE_PROG_ARRAY; 74 } 75 76 static int map_type_from_str(const char *type) 77 { 78 unsigned int i; 79 80 for (i = 0; i < ARRAY_SIZE(map_type_name); i++) 81 /* Don't allow prefixing in case of possible future shadowing */ 82 if (map_type_name[i] && !strcmp(map_type_name[i], type)) 83 return i; 84 return -1; 85 } 86 87 static void *alloc_value(struct bpf_map_info *info) 88 { 89 if (map_is_per_cpu(info->type)) 90 return malloc(round_up(info->value_size, 8) * 91 get_possible_cpus()); 92 else 93 return malloc(info->value_size); 94 } 95 96 static int map_fd_by_name(char *name, int **fds) 97 { 98 unsigned int id = 0; 99 int fd, nb_fds = 0; 100 void *tmp; 101 int err; 102 103 while (true) { 104 struct bpf_map_info info = {}; 105 __u32 len = sizeof(info); 106 107 err = bpf_map_get_next_id(id, &id); 108 if (err) { 109 if (errno != ENOENT) { 110 p_err("%s", strerror(errno)); 111 goto err_close_fds; 112 } 113 return nb_fds; 114 } 115 116 fd = bpf_map_get_fd_by_id(id); 117 if (fd < 0) { 118 p_err("can't get map by id (%u): %s", 119 id, strerror(errno)); 120 goto err_close_fds; 121 } 122 123 err = bpf_obj_get_info_by_fd(fd, &info, &len); 124 if (err) { 125 p_err("can't get map info (%u): %s", 126 id, strerror(errno)); 127 goto err_close_fd; 128 } 129 130 if (strncmp(name, info.name, BPF_OBJ_NAME_LEN)) { 131 close(fd); 132 continue; 133 } 134 135 if (nb_fds > 0) { 136 tmp = realloc(*fds, (nb_fds + 1) * sizeof(int)); 137 if (!tmp) { 138 p_err("failed to realloc"); 139 goto err_close_fd; 140 } 141 *fds = tmp; 142 } 143 (*fds)[nb_fds++] = fd; 144 } 145 146 err_close_fd: 147 close(fd); 148 err_close_fds: 149 while (--nb_fds >= 0) 150 close((*fds)[nb_fds]); 151 return -1; 152 } 153 154 static int map_parse_fds(int *argc, char ***argv, int **fds) 155 { 156 if (is_prefix(**argv, "id")) { 157 unsigned int id; 158 char *endptr; 159 160 NEXT_ARGP(); 161 162 id = strtoul(**argv, &endptr, 0); 163 if (*endptr) { 164 p_err("can't parse %s as ID", **argv); 165 return -1; 166 } 167 NEXT_ARGP(); 168 169 (*fds)[0] = bpf_map_get_fd_by_id(id); 170 if ((*fds)[0] < 0) { 171 p_err("get map by id (%u): %s", id, strerror(errno)); 172 return -1; 173 } 174 return 1; 175 } else if (is_prefix(**argv, "name")) { 176 char *name; 177 178 NEXT_ARGP(); 179 180 name = **argv; 181 if (strlen(name) > BPF_OBJ_NAME_LEN - 1) { 182 p_err("can't parse name"); 183 return -1; 184 } 185 NEXT_ARGP(); 186 187 return map_fd_by_name(name, fds); 188 } else if (is_prefix(**argv, "pinned")) { 189 char *path; 190 191 NEXT_ARGP(); 192 193 path = **argv; 194 NEXT_ARGP(); 195 196 (*fds)[0] = open_obj_pinned_any(path, BPF_OBJ_MAP); 197 if ((*fds)[0] < 0) 198 return -1; 199 return 1; 200 } 201 202 p_err("expected 'id', 'name' or 'pinned', got: '%s'?", **argv); 203 return -1; 204 } 205 206 int map_parse_fd(int *argc, char ***argv) 207 { 208 int *fds = NULL; 209 int nb_fds, fd; 210 211 fds = malloc(sizeof(int)); 212 if (!fds) { 213 p_err("mem alloc failed"); 214 return -1; 215 } 216 nb_fds = map_parse_fds(argc, argv, &fds); 217 if (nb_fds != 1) { 218 if (nb_fds > 1) { 219 p_err("several maps match this handle"); 220 while (nb_fds--) 221 close(fds[nb_fds]); 222 } 223 fd = -1; 224 goto exit_free; 225 } 226 227 fd = fds[0]; 228 exit_free: 229 free(fds); 230 return fd; 231 } 232 233 int map_parse_fd_and_info(int *argc, char ***argv, void *info, __u32 *info_len) 234 { 235 int err; 236 int fd; 237 238 fd = map_parse_fd(argc, argv); 239 if (fd < 0) 240 return -1; 241 242 err = bpf_obj_get_info_by_fd(fd, info, info_len); 243 if (err) { 244 p_err("can't get map info: %s", strerror(errno)); 245 close(fd); 246 return err; 247 } 248 249 return fd; 250 } 251 252 static int do_dump_btf(const struct btf_dumper *d, 253 struct bpf_map_info *map_info, void *key, 254 void *value) 255 { 256 __u32 value_id; 257 int ret; 258 259 /* start of key-value pair */ 260 jsonw_start_object(d->jw); 261 262 if (map_info->btf_key_type_id) { 263 jsonw_name(d->jw, "key"); 264 265 ret = btf_dumper_type(d, map_info->btf_key_type_id, key); 266 if (ret) 267 goto err_end_obj; 268 } 269 270 value_id = map_info->btf_vmlinux_value_type_id ? 271 : map_info->btf_value_type_id; 272 273 if (!map_is_per_cpu(map_info->type)) { 274 jsonw_name(d->jw, "value"); 275 ret = btf_dumper_type(d, value_id, value); 276 } else { 277 unsigned int i, n, step; 278 279 jsonw_name(d->jw, "values"); 280 jsonw_start_array(d->jw); 281 n = get_possible_cpus(); 282 step = round_up(map_info->value_size, 8); 283 for (i = 0; i < n; i++) { 284 jsonw_start_object(d->jw); 285 jsonw_int_field(d->jw, "cpu", i); 286 jsonw_name(d->jw, "value"); 287 ret = btf_dumper_type(d, value_id, value + i * step); 288 jsonw_end_object(d->jw); 289 if (ret) 290 break; 291 } 292 jsonw_end_array(d->jw); 293 } 294 295 err_end_obj: 296 /* end of key-value pair */ 297 jsonw_end_object(d->jw); 298 299 return ret; 300 } 301 302 static json_writer_t *get_btf_writer(void) 303 { 304 json_writer_t *jw = jsonw_new(stdout); 305 306 if (!jw) 307 return NULL; 308 jsonw_pretty(jw, true); 309 310 return jw; 311 } 312 313 static void print_entry_json(struct bpf_map_info *info, unsigned char *key, 314 unsigned char *value, struct btf *btf) 315 { 316 jsonw_start_object(json_wtr); 317 318 if (!map_is_per_cpu(info->type)) { 319 jsonw_name(json_wtr, "key"); 320 print_hex_data_json(key, info->key_size); 321 jsonw_name(json_wtr, "value"); 322 print_hex_data_json(value, info->value_size); 323 if (btf) { 324 struct btf_dumper d = { 325 .btf = btf, 326 .jw = json_wtr, 327 .is_plain_text = false, 328 }; 329 330 jsonw_name(json_wtr, "formatted"); 331 do_dump_btf(&d, info, key, value); 332 } 333 } else { 334 unsigned int i, n, step; 335 336 n = get_possible_cpus(); 337 step = round_up(info->value_size, 8); 338 339 jsonw_name(json_wtr, "key"); 340 print_hex_data_json(key, info->key_size); 341 342 jsonw_name(json_wtr, "values"); 343 jsonw_start_array(json_wtr); 344 for (i = 0; i < n; i++) { 345 jsonw_start_object(json_wtr); 346 347 jsonw_int_field(json_wtr, "cpu", i); 348 349 jsonw_name(json_wtr, "value"); 350 print_hex_data_json(value + i * step, 351 info->value_size); 352 353 jsonw_end_object(json_wtr); 354 } 355 jsonw_end_array(json_wtr); 356 if (btf) { 357 struct btf_dumper d = { 358 .btf = btf, 359 .jw = json_wtr, 360 .is_plain_text = false, 361 }; 362 363 jsonw_name(json_wtr, "formatted"); 364 do_dump_btf(&d, info, key, value); 365 } 366 } 367 368 jsonw_end_object(json_wtr); 369 } 370 371 static void print_entry_error(struct bpf_map_info *info, unsigned char *key, 372 const char *error_msg) 373 { 374 int msg_size = strlen(error_msg); 375 bool single_line, break_names; 376 377 break_names = info->key_size > 16 || msg_size > 16; 378 single_line = info->key_size + msg_size <= 24 && !break_names; 379 380 printf("key:%c", break_names ? '\n' : ' '); 381 fprint_hex(stdout, key, info->key_size, " "); 382 383 printf(single_line ? " " : "\n"); 384 385 printf("value:%c%s", break_names ? '\n' : ' ', error_msg); 386 387 printf("\n"); 388 } 389 390 static void print_entry_plain(struct bpf_map_info *info, unsigned char *key, 391 unsigned char *value) 392 { 393 if (!map_is_per_cpu(info->type)) { 394 bool single_line, break_names; 395 396 break_names = info->key_size > 16 || info->value_size > 16; 397 single_line = info->key_size + info->value_size <= 24 && 398 !break_names; 399 400 if (info->key_size) { 401 printf("key:%c", break_names ? '\n' : ' '); 402 fprint_hex(stdout, key, info->key_size, " "); 403 404 printf(single_line ? " " : "\n"); 405 } 406 407 if (info->value_size) { 408 printf("value:%c", break_names ? '\n' : ' '); 409 fprint_hex(stdout, value, info->value_size, " "); 410 } 411 412 printf("\n"); 413 } else { 414 unsigned int i, n, step; 415 416 n = get_possible_cpus(); 417 step = round_up(info->value_size, 8); 418 419 if (info->key_size) { 420 printf("key:\n"); 421 fprint_hex(stdout, key, info->key_size, " "); 422 printf("\n"); 423 } 424 if (info->value_size) { 425 for (i = 0; i < n; i++) { 426 printf("value (CPU %02d):%c", 427 i, info->value_size > 16 ? '\n' : ' '); 428 fprint_hex(stdout, value + i * step, 429 info->value_size, " "); 430 printf("\n"); 431 } 432 } 433 } 434 } 435 436 static char **parse_bytes(char **argv, const char *name, unsigned char *val, 437 unsigned int n) 438 { 439 unsigned int i = 0, base = 0; 440 char *endptr; 441 442 if (is_prefix(*argv, "hex")) { 443 base = 16; 444 argv++; 445 } 446 447 while (i < n && argv[i]) { 448 val[i] = strtoul(argv[i], &endptr, base); 449 if (*endptr) { 450 p_err("error parsing byte: %s", argv[i]); 451 return NULL; 452 } 453 i++; 454 } 455 456 if (i != n) { 457 p_err("%s expected %d bytes got %d", name, n, i); 458 return NULL; 459 } 460 461 return argv + i; 462 } 463 464 /* on per cpu maps we must copy the provided value on all value instances */ 465 static void fill_per_cpu_value(struct bpf_map_info *info, void *value) 466 { 467 unsigned int i, n, step; 468 469 if (!map_is_per_cpu(info->type)) 470 return; 471 472 n = get_possible_cpus(); 473 step = round_up(info->value_size, 8); 474 for (i = 1; i < n; i++) 475 memcpy(value + i * step, value, info->value_size); 476 } 477 478 static int parse_elem(char **argv, struct bpf_map_info *info, 479 void *key, void *value, __u32 key_size, __u32 value_size, 480 __u32 *flags, __u32 **value_fd) 481 { 482 if (!*argv) { 483 if (!key && !value) 484 return 0; 485 p_err("did not find %s", key ? "key" : "value"); 486 return -1; 487 } 488 489 if (is_prefix(*argv, "key")) { 490 if (!key) { 491 if (key_size) 492 p_err("duplicate key"); 493 else 494 p_err("unnecessary key"); 495 return -1; 496 } 497 498 argv = parse_bytes(argv + 1, "key", key, key_size); 499 if (!argv) 500 return -1; 501 502 return parse_elem(argv, info, NULL, value, key_size, value_size, 503 flags, value_fd); 504 } else if (is_prefix(*argv, "value")) { 505 int fd; 506 507 if (!value) { 508 if (value_size) 509 p_err("duplicate value"); 510 else 511 p_err("unnecessary value"); 512 return -1; 513 } 514 515 argv++; 516 517 if (map_is_map_of_maps(info->type)) { 518 int argc = 2; 519 520 if (value_size != 4) { 521 p_err("value smaller than 4B for map in map?"); 522 return -1; 523 } 524 if (!argv[0] || !argv[1]) { 525 p_err("not enough value arguments for map in map"); 526 return -1; 527 } 528 529 fd = map_parse_fd(&argc, &argv); 530 if (fd < 0) 531 return -1; 532 533 *value_fd = value; 534 **value_fd = fd; 535 } else if (map_is_map_of_progs(info->type)) { 536 int argc = 2; 537 538 if (value_size != 4) { 539 p_err("value smaller than 4B for map of progs?"); 540 return -1; 541 } 542 if (!argv[0] || !argv[1]) { 543 p_err("not enough value arguments for map of progs"); 544 return -1; 545 } 546 if (is_prefix(*argv, "id")) 547 p_info("Warning: updating program array via MAP_ID, make sure this map is kept open\n" 548 " by some process or pinned otherwise update will be lost"); 549 550 fd = prog_parse_fd(&argc, &argv); 551 if (fd < 0) 552 return -1; 553 554 *value_fd = value; 555 **value_fd = fd; 556 } else { 557 argv = parse_bytes(argv, "value", value, value_size); 558 if (!argv) 559 return -1; 560 561 fill_per_cpu_value(info, value); 562 } 563 564 return parse_elem(argv, info, key, NULL, key_size, value_size, 565 flags, NULL); 566 } else if (is_prefix(*argv, "any") || is_prefix(*argv, "noexist") || 567 is_prefix(*argv, "exist")) { 568 if (!flags) { 569 p_err("flags specified multiple times: %s", *argv); 570 return -1; 571 } 572 573 if (is_prefix(*argv, "any")) 574 *flags = BPF_ANY; 575 else if (is_prefix(*argv, "noexist")) 576 *flags = BPF_NOEXIST; 577 else if (is_prefix(*argv, "exist")) 578 *flags = BPF_EXIST; 579 580 return parse_elem(argv + 1, info, key, value, key_size, 581 value_size, NULL, value_fd); 582 } 583 584 p_err("expected key or value, got: %s", *argv); 585 return -1; 586 } 587 588 static void show_map_header_json(struct bpf_map_info *info, json_writer_t *wtr) 589 { 590 jsonw_uint_field(wtr, "id", info->id); 591 if (info->type < ARRAY_SIZE(map_type_name)) 592 jsonw_string_field(wtr, "type", map_type_name[info->type]); 593 else 594 jsonw_uint_field(wtr, "type", info->type); 595 596 if (*info->name) 597 jsonw_string_field(wtr, "name", info->name); 598 599 jsonw_name(wtr, "flags"); 600 jsonw_printf(wtr, "%d", info->map_flags); 601 } 602 603 static int show_map_close_json(int fd, struct bpf_map_info *info) 604 { 605 char *memlock, *frozen_str; 606 int frozen = 0; 607 608 memlock = get_fdinfo(fd, "memlock"); 609 frozen_str = get_fdinfo(fd, "frozen"); 610 611 jsonw_start_object(json_wtr); 612 613 show_map_header_json(info, json_wtr); 614 615 print_dev_json(info->ifindex, info->netns_dev, info->netns_ino); 616 617 jsonw_uint_field(json_wtr, "bytes_key", info->key_size); 618 jsonw_uint_field(json_wtr, "bytes_value", info->value_size); 619 jsonw_uint_field(json_wtr, "max_entries", info->max_entries); 620 621 if (memlock) 622 jsonw_int_field(json_wtr, "bytes_memlock", atoi(memlock)); 623 free(memlock); 624 625 if (info->type == BPF_MAP_TYPE_PROG_ARRAY) { 626 char *owner_prog_type = get_fdinfo(fd, "owner_prog_type"); 627 char *owner_jited = get_fdinfo(fd, "owner_jited"); 628 629 if (owner_prog_type) { 630 unsigned int prog_type = atoi(owner_prog_type); 631 632 if (prog_type < ARRAY_SIZE(prog_type_name)) 633 jsonw_string_field(json_wtr, "owner_prog_type", 634 prog_type_name[prog_type]); 635 else 636 jsonw_uint_field(json_wtr, "owner_prog_type", 637 prog_type); 638 } 639 if (owner_jited) 640 jsonw_bool_field(json_wtr, "owner_jited", 641 !!atoi(owner_jited)); 642 643 free(owner_prog_type); 644 free(owner_jited); 645 } 646 close(fd); 647 648 if (frozen_str) { 649 frozen = atoi(frozen_str); 650 free(frozen_str); 651 } 652 jsonw_int_field(json_wtr, "frozen", frozen); 653 654 if (info->btf_id) 655 jsonw_int_field(json_wtr, "btf_id", info->btf_id); 656 657 if (!hash_empty(map_table.table)) { 658 struct pinned_obj *obj; 659 660 jsonw_name(json_wtr, "pinned"); 661 jsonw_start_array(json_wtr); 662 hash_for_each_possible(map_table.table, obj, hash, info->id) { 663 if (obj->id == info->id) 664 jsonw_string(json_wtr, obj->path); 665 } 666 jsonw_end_array(json_wtr); 667 } 668 669 jsonw_end_object(json_wtr); 670 671 return 0; 672 } 673 674 static void show_map_header_plain(struct bpf_map_info *info) 675 { 676 printf("%u: ", info->id); 677 if (info->type < ARRAY_SIZE(map_type_name)) 678 printf("%s ", map_type_name[info->type]); 679 else 680 printf("type %u ", info->type); 681 682 if (*info->name) 683 printf("name %s ", info->name); 684 685 printf("flags 0x%x", info->map_flags); 686 print_dev_plain(info->ifindex, info->netns_dev, info->netns_ino); 687 printf("\n"); 688 } 689 690 static int show_map_close_plain(int fd, struct bpf_map_info *info) 691 { 692 char *memlock, *frozen_str; 693 int frozen = 0; 694 695 memlock = get_fdinfo(fd, "memlock"); 696 frozen_str = get_fdinfo(fd, "frozen"); 697 698 show_map_header_plain(info); 699 printf("\tkey %uB value %uB max_entries %u", 700 info->key_size, info->value_size, info->max_entries); 701 702 if (memlock) 703 printf(" memlock %sB", memlock); 704 free(memlock); 705 706 if (info->type == BPF_MAP_TYPE_PROG_ARRAY) { 707 char *owner_prog_type = get_fdinfo(fd, "owner_prog_type"); 708 char *owner_jited = get_fdinfo(fd, "owner_jited"); 709 710 if (owner_prog_type || owner_jited) 711 printf("\n\t"); 712 if (owner_prog_type) { 713 unsigned int prog_type = atoi(owner_prog_type); 714 715 if (prog_type < ARRAY_SIZE(prog_type_name)) 716 printf("owner_prog_type %s ", 717 prog_type_name[prog_type]); 718 else 719 printf("owner_prog_type %d ", prog_type); 720 } 721 if (owner_jited) 722 printf("owner%s jited", 723 atoi(owner_jited) ? "" : " not"); 724 725 free(owner_prog_type); 726 free(owner_jited); 727 } 728 close(fd); 729 730 if (!hash_empty(map_table.table)) { 731 struct pinned_obj *obj; 732 733 hash_for_each_possible(map_table.table, obj, hash, info->id) { 734 if (obj->id == info->id) 735 printf("\n\tpinned %s", obj->path); 736 } 737 } 738 printf("\n"); 739 740 if (frozen_str) { 741 frozen = atoi(frozen_str); 742 free(frozen_str); 743 } 744 745 if (!info->btf_id && !frozen) 746 return 0; 747 748 printf("\t"); 749 750 if (info->btf_id) 751 printf("btf_id %d", info->btf_id); 752 753 if (frozen) 754 printf("%sfrozen", info->btf_id ? " " : ""); 755 756 printf("\n"); 757 return 0; 758 } 759 760 static int do_show_subset(int argc, char **argv) 761 { 762 struct bpf_map_info info = {}; 763 __u32 len = sizeof(info); 764 int *fds = NULL; 765 int nb_fds, i; 766 int err = -1; 767 768 fds = malloc(sizeof(int)); 769 if (!fds) { 770 p_err("mem alloc failed"); 771 return -1; 772 } 773 nb_fds = map_parse_fds(&argc, &argv, &fds); 774 if (nb_fds < 1) 775 goto exit_free; 776 777 if (json_output && nb_fds > 1) 778 jsonw_start_array(json_wtr); /* root array */ 779 for (i = 0; i < nb_fds; i++) { 780 err = bpf_obj_get_info_by_fd(fds[i], &info, &len); 781 if (err) { 782 p_err("can't get map info: %s", 783 strerror(errno)); 784 for (; i < nb_fds; i++) 785 close(fds[i]); 786 break; 787 } 788 789 if (json_output) 790 show_map_close_json(fds[i], &info); 791 else 792 show_map_close_plain(fds[i], &info); 793 794 close(fds[i]); 795 } 796 if (json_output && nb_fds > 1) 797 jsonw_end_array(json_wtr); /* root array */ 798 799 exit_free: 800 free(fds); 801 return err; 802 } 803 804 static int do_show(int argc, char **argv) 805 { 806 struct bpf_map_info info = {}; 807 __u32 len = sizeof(info); 808 __u32 id = 0; 809 int err; 810 int fd; 811 812 if (show_pinned) 813 build_pinned_obj_table(&map_table, BPF_OBJ_MAP); 814 815 if (argc == 2) 816 return do_show_subset(argc, argv); 817 818 if (argc) 819 return BAD_ARG(); 820 821 if (json_output) 822 jsonw_start_array(json_wtr); 823 while (true) { 824 err = bpf_map_get_next_id(id, &id); 825 if (err) { 826 if (errno == ENOENT) 827 break; 828 p_err("can't get next map: %s%s", strerror(errno), 829 errno == EINVAL ? " -- kernel too old?" : ""); 830 break; 831 } 832 833 fd = bpf_map_get_fd_by_id(id); 834 if (fd < 0) { 835 if (errno == ENOENT) 836 continue; 837 p_err("can't get map by id (%u): %s", 838 id, strerror(errno)); 839 break; 840 } 841 842 err = bpf_obj_get_info_by_fd(fd, &info, &len); 843 if (err) { 844 p_err("can't get map info: %s", strerror(errno)); 845 close(fd); 846 break; 847 } 848 849 if (json_output) 850 show_map_close_json(fd, &info); 851 else 852 show_map_close_plain(fd, &info); 853 } 854 if (json_output) 855 jsonw_end_array(json_wtr); 856 857 return errno == ENOENT ? 0 : -1; 858 } 859 860 static int dump_map_elem(int fd, void *key, void *value, 861 struct bpf_map_info *map_info, struct btf *btf, 862 json_writer_t *btf_wtr) 863 { 864 int num_elems = 0; 865 int lookup_errno; 866 867 if (!bpf_map_lookup_elem(fd, key, value)) { 868 if (json_output) { 869 print_entry_json(map_info, key, value, btf); 870 } else { 871 if (btf) { 872 struct btf_dumper d = { 873 .btf = btf, 874 .jw = btf_wtr, 875 .is_plain_text = true, 876 }; 877 878 do_dump_btf(&d, map_info, key, value); 879 } else { 880 print_entry_plain(map_info, key, value); 881 } 882 num_elems++; 883 } 884 return num_elems; 885 } 886 887 /* lookup error handling */ 888 lookup_errno = errno; 889 890 if (map_is_map_of_maps(map_info->type) || 891 map_is_map_of_progs(map_info->type)) 892 return 0; 893 894 if (json_output) { 895 jsonw_start_object(json_wtr); 896 jsonw_name(json_wtr, "key"); 897 print_hex_data_json(key, map_info->key_size); 898 jsonw_name(json_wtr, "value"); 899 jsonw_start_object(json_wtr); 900 jsonw_string_field(json_wtr, "error", strerror(lookup_errno)); 901 jsonw_end_object(json_wtr); 902 jsonw_end_object(json_wtr); 903 } else { 904 const char *msg = NULL; 905 906 if (lookup_errno == ENOENT) 907 msg = "<no entry>"; 908 else if (lookup_errno == ENOSPC && 909 map_info->type == BPF_MAP_TYPE_REUSEPORT_SOCKARRAY) 910 msg = "<cannot read>"; 911 912 print_entry_error(map_info, key, 913 msg ? : strerror(lookup_errno)); 914 } 915 916 return 0; 917 } 918 919 static int maps_have_btf(int *fds, int nb_fds) 920 { 921 struct bpf_map_info info = {}; 922 __u32 len = sizeof(info); 923 int err, i; 924 925 for (i = 0; i < nb_fds; i++) { 926 err = bpf_obj_get_info_by_fd(fds[i], &info, &len); 927 if (err) { 928 p_err("can't get map info: %s", strerror(errno)); 929 return -1; 930 } 931 932 if (!info.btf_id) 933 return 0; 934 } 935 936 return 1; 937 } 938 939 static struct btf *btf_vmlinux; 940 941 static struct btf *get_map_kv_btf(const struct bpf_map_info *info) 942 { 943 struct btf *btf = NULL; 944 945 if (info->btf_vmlinux_value_type_id) { 946 if (!btf_vmlinux) { 947 btf_vmlinux = libbpf_find_kernel_btf(); 948 if (IS_ERR(btf_vmlinux)) 949 p_err("failed to get kernel btf"); 950 } 951 return btf_vmlinux; 952 } else if (info->btf_value_type_id) { 953 int err; 954 955 err = btf__get_from_id(info->btf_id, &btf); 956 if (err || !btf) { 957 p_err("failed to get btf"); 958 btf = err ? ERR_PTR(err) : ERR_PTR(-ESRCH); 959 } 960 } 961 962 return btf; 963 } 964 965 static void free_map_kv_btf(struct btf *btf) 966 { 967 if (!IS_ERR(btf) && btf != btf_vmlinux) 968 btf__free(btf); 969 } 970 971 static void free_btf_vmlinux(void) 972 { 973 if (!IS_ERR(btf_vmlinux)) 974 btf__free(btf_vmlinux); 975 } 976 977 static int 978 map_dump(int fd, struct bpf_map_info *info, json_writer_t *wtr, 979 bool show_header) 980 { 981 void *key, *value, *prev_key; 982 unsigned int num_elems = 0; 983 struct btf *btf = NULL; 984 int err; 985 986 key = malloc(info->key_size); 987 value = alloc_value(info); 988 if (!key || !value) { 989 p_err("mem alloc failed"); 990 err = -1; 991 goto exit_free; 992 } 993 994 prev_key = NULL; 995 996 if (wtr) { 997 btf = get_map_kv_btf(info); 998 if (IS_ERR(btf)) { 999 err = PTR_ERR(btf); 1000 goto exit_free; 1001 } 1002 1003 if (show_header) { 1004 jsonw_start_object(wtr); /* map object */ 1005 show_map_header_json(info, wtr); 1006 jsonw_name(wtr, "elements"); 1007 } 1008 jsonw_start_array(wtr); /* elements */ 1009 } else if (show_header) { 1010 show_map_header_plain(info); 1011 } 1012 1013 if (info->type == BPF_MAP_TYPE_REUSEPORT_SOCKARRAY && 1014 info->value_size != 8) 1015 p_info("Warning: cannot read values from %s map with value_size != 8", 1016 map_type_name[info->type]); 1017 while (true) { 1018 err = bpf_map_get_next_key(fd, prev_key, key); 1019 if (err) { 1020 if (errno == ENOENT) 1021 err = 0; 1022 break; 1023 } 1024 num_elems += dump_map_elem(fd, key, value, info, btf, wtr); 1025 prev_key = key; 1026 } 1027 1028 if (wtr) { 1029 jsonw_end_array(wtr); /* elements */ 1030 if (show_header) 1031 jsonw_end_object(wtr); /* map object */ 1032 } else { 1033 printf("Found %u element%s\n", num_elems, 1034 num_elems != 1 ? "s" : ""); 1035 } 1036 1037 exit_free: 1038 free(key); 1039 free(value); 1040 close(fd); 1041 free_map_kv_btf(btf); 1042 1043 return err; 1044 } 1045 1046 static int do_dump(int argc, char **argv) 1047 { 1048 json_writer_t *wtr = NULL, *btf_wtr = NULL; 1049 struct bpf_map_info info = {}; 1050 int nb_fds, i = 0; 1051 __u32 len = sizeof(info); 1052 int *fds = NULL; 1053 int err = -1; 1054 1055 if (argc != 2) 1056 usage(); 1057 1058 fds = malloc(sizeof(int)); 1059 if (!fds) { 1060 p_err("mem alloc failed"); 1061 return -1; 1062 } 1063 nb_fds = map_parse_fds(&argc, &argv, &fds); 1064 if (nb_fds < 1) 1065 goto exit_free; 1066 1067 if (json_output) { 1068 wtr = json_wtr; 1069 } else { 1070 int do_plain_btf; 1071 1072 do_plain_btf = maps_have_btf(fds, nb_fds); 1073 if (do_plain_btf < 0) 1074 goto exit_close; 1075 1076 if (do_plain_btf) { 1077 btf_wtr = get_btf_writer(); 1078 wtr = btf_wtr; 1079 if (!btf_wtr) 1080 p_info("failed to create json writer for btf. falling back to plain output"); 1081 } 1082 } 1083 1084 if (wtr && nb_fds > 1) 1085 jsonw_start_array(wtr); /* root array */ 1086 for (i = 0; i < nb_fds; i++) { 1087 if (bpf_obj_get_info_by_fd(fds[i], &info, &len)) { 1088 p_err("can't get map info: %s", strerror(errno)); 1089 break; 1090 } 1091 err = map_dump(fds[i], &info, wtr, nb_fds > 1); 1092 if (!wtr && i != nb_fds - 1) 1093 printf("\n"); 1094 1095 if (err) 1096 break; 1097 close(fds[i]); 1098 } 1099 if (wtr && nb_fds > 1) 1100 jsonw_end_array(wtr); /* root array */ 1101 1102 if (btf_wtr) 1103 jsonw_destroy(&btf_wtr); 1104 exit_close: 1105 for (; i < nb_fds; i++) 1106 close(fds[i]); 1107 exit_free: 1108 free(fds); 1109 free_btf_vmlinux(); 1110 return err; 1111 } 1112 1113 static int alloc_key_value(struct bpf_map_info *info, void **key, void **value) 1114 { 1115 *key = NULL; 1116 *value = NULL; 1117 1118 if (info->key_size) { 1119 *key = malloc(info->key_size); 1120 if (!*key) { 1121 p_err("key mem alloc failed"); 1122 return -1; 1123 } 1124 } 1125 1126 if (info->value_size) { 1127 *value = alloc_value(info); 1128 if (!*value) { 1129 p_err("value mem alloc failed"); 1130 free(*key); 1131 *key = NULL; 1132 return -1; 1133 } 1134 } 1135 1136 return 0; 1137 } 1138 1139 static int do_update(int argc, char **argv) 1140 { 1141 struct bpf_map_info info = {}; 1142 __u32 len = sizeof(info); 1143 __u32 *value_fd = NULL; 1144 __u32 flags = BPF_ANY; 1145 void *key, *value; 1146 int fd, err; 1147 1148 if (argc < 2) 1149 usage(); 1150 1151 fd = map_parse_fd_and_info(&argc, &argv, &info, &len); 1152 if (fd < 0) 1153 return -1; 1154 1155 err = alloc_key_value(&info, &key, &value); 1156 if (err) 1157 goto exit_free; 1158 1159 err = parse_elem(argv, &info, key, value, info.key_size, 1160 info.value_size, &flags, &value_fd); 1161 if (err) 1162 goto exit_free; 1163 1164 err = bpf_map_update_elem(fd, key, value, flags); 1165 if (err) { 1166 p_err("update failed: %s", strerror(errno)); 1167 goto exit_free; 1168 } 1169 1170 exit_free: 1171 if (value_fd) 1172 close(*value_fd); 1173 free(key); 1174 free(value); 1175 close(fd); 1176 1177 if (!err && json_output) 1178 jsonw_null(json_wtr); 1179 return err; 1180 } 1181 1182 static void print_key_value(struct bpf_map_info *info, void *key, 1183 void *value) 1184 { 1185 json_writer_t *btf_wtr; 1186 struct btf *btf = NULL; 1187 int err; 1188 1189 err = btf__get_from_id(info->btf_id, &btf); 1190 if (err) { 1191 p_err("failed to get btf"); 1192 return; 1193 } 1194 1195 if (json_output) { 1196 print_entry_json(info, key, value, btf); 1197 } else if (btf) { 1198 /* if here json_wtr wouldn't have been initialised, 1199 * so let's create separate writer for btf 1200 */ 1201 btf_wtr = get_btf_writer(); 1202 if (!btf_wtr) { 1203 p_info("failed to create json writer for btf. falling back to plain output"); 1204 btf__free(btf); 1205 btf = NULL; 1206 print_entry_plain(info, key, value); 1207 } else { 1208 struct btf_dumper d = { 1209 .btf = btf, 1210 .jw = btf_wtr, 1211 .is_plain_text = true, 1212 }; 1213 1214 do_dump_btf(&d, info, key, value); 1215 jsonw_destroy(&btf_wtr); 1216 } 1217 } else { 1218 print_entry_plain(info, key, value); 1219 } 1220 btf__free(btf); 1221 } 1222 1223 static int do_lookup(int argc, char **argv) 1224 { 1225 struct bpf_map_info info = {}; 1226 __u32 len = sizeof(info); 1227 void *key, *value; 1228 int err; 1229 int fd; 1230 1231 if (argc < 2) 1232 usage(); 1233 1234 fd = map_parse_fd_and_info(&argc, &argv, &info, &len); 1235 if (fd < 0) 1236 return -1; 1237 1238 err = alloc_key_value(&info, &key, &value); 1239 if (err) 1240 goto exit_free; 1241 1242 err = parse_elem(argv, &info, key, NULL, info.key_size, 0, NULL, NULL); 1243 if (err) 1244 goto exit_free; 1245 1246 err = bpf_map_lookup_elem(fd, key, value); 1247 if (err) { 1248 if (errno == ENOENT) { 1249 if (json_output) { 1250 jsonw_null(json_wtr); 1251 } else { 1252 printf("key:\n"); 1253 fprint_hex(stdout, key, info.key_size, " "); 1254 printf("\n\nNot found\n"); 1255 } 1256 } else { 1257 p_err("lookup failed: %s", strerror(errno)); 1258 } 1259 1260 goto exit_free; 1261 } 1262 1263 /* here means bpf_map_lookup_elem() succeeded */ 1264 print_key_value(&info, key, value); 1265 1266 exit_free: 1267 free(key); 1268 free(value); 1269 close(fd); 1270 1271 return err; 1272 } 1273 1274 static int do_getnext(int argc, char **argv) 1275 { 1276 struct bpf_map_info info = {}; 1277 __u32 len = sizeof(info); 1278 void *key, *nextkey; 1279 int err; 1280 int fd; 1281 1282 if (argc < 2) 1283 usage(); 1284 1285 fd = map_parse_fd_and_info(&argc, &argv, &info, &len); 1286 if (fd < 0) 1287 return -1; 1288 1289 key = malloc(info.key_size); 1290 nextkey = malloc(info.key_size); 1291 if (!key || !nextkey) { 1292 p_err("mem alloc failed"); 1293 err = -1; 1294 goto exit_free; 1295 } 1296 1297 if (argc) { 1298 err = parse_elem(argv, &info, key, NULL, info.key_size, 0, 1299 NULL, NULL); 1300 if (err) 1301 goto exit_free; 1302 } else { 1303 free(key); 1304 key = NULL; 1305 } 1306 1307 err = bpf_map_get_next_key(fd, key, nextkey); 1308 if (err) { 1309 p_err("can't get next key: %s", strerror(errno)); 1310 goto exit_free; 1311 } 1312 1313 if (json_output) { 1314 jsonw_start_object(json_wtr); 1315 if (key) { 1316 jsonw_name(json_wtr, "key"); 1317 print_hex_data_json(key, info.key_size); 1318 } else { 1319 jsonw_null_field(json_wtr, "key"); 1320 } 1321 jsonw_name(json_wtr, "next_key"); 1322 print_hex_data_json(nextkey, info.key_size); 1323 jsonw_end_object(json_wtr); 1324 } else { 1325 if (key) { 1326 printf("key:\n"); 1327 fprint_hex(stdout, key, info.key_size, " "); 1328 printf("\n"); 1329 } else { 1330 printf("key: None\n"); 1331 } 1332 printf("next key:\n"); 1333 fprint_hex(stdout, nextkey, info.key_size, " "); 1334 printf("\n"); 1335 } 1336 1337 exit_free: 1338 free(nextkey); 1339 free(key); 1340 close(fd); 1341 1342 return err; 1343 } 1344 1345 static int do_delete(int argc, char **argv) 1346 { 1347 struct bpf_map_info info = {}; 1348 __u32 len = sizeof(info); 1349 void *key; 1350 int err; 1351 int fd; 1352 1353 if (argc < 2) 1354 usage(); 1355 1356 fd = map_parse_fd_and_info(&argc, &argv, &info, &len); 1357 if (fd < 0) 1358 return -1; 1359 1360 key = malloc(info.key_size); 1361 if (!key) { 1362 p_err("mem alloc failed"); 1363 err = -1; 1364 goto exit_free; 1365 } 1366 1367 err = parse_elem(argv, &info, key, NULL, info.key_size, 0, NULL, NULL); 1368 if (err) 1369 goto exit_free; 1370 1371 err = bpf_map_delete_elem(fd, key); 1372 if (err) 1373 p_err("delete failed: %s", strerror(errno)); 1374 1375 exit_free: 1376 free(key); 1377 close(fd); 1378 1379 if (!err && json_output) 1380 jsonw_null(json_wtr); 1381 return err; 1382 } 1383 1384 static int do_pin(int argc, char **argv) 1385 { 1386 int err; 1387 1388 err = do_pin_any(argc, argv, map_parse_fd); 1389 if (!err && json_output) 1390 jsonw_null(json_wtr); 1391 return err; 1392 } 1393 1394 static int do_create(int argc, char **argv) 1395 { 1396 struct bpf_create_map_attr attr = { NULL, }; 1397 const char *pinfile; 1398 int err, fd; 1399 1400 if (!REQ_ARGS(7)) 1401 return -1; 1402 pinfile = GET_ARG(); 1403 1404 while (argc) { 1405 if (!REQ_ARGS(2)) 1406 return -1; 1407 1408 if (is_prefix(*argv, "type")) { 1409 NEXT_ARG(); 1410 1411 if (attr.map_type) { 1412 p_err("map type already specified"); 1413 return -1; 1414 } 1415 1416 attr.map_type = map_type_from_str(*argv); 1417 if ((int)attr.map_type < 0) { 1418 p_err("unrecognized map type: %s", *argv); 1419 return -1; 1420 } 1421 NEXT_ARG(); 1422 } else if (is_prefix(*argv, "name")) { 1423 NEXT_ARG(); 1424 attr.name = GET_ARG(); 1425 } else if (is_prefix(*argv, "key")) { 1426 if (parse_u32_arg(&argc, &argv, &attr.key_size, 1427 "key size")) 1428 return -1; 1429 } else if (is_prefix(*argv, "value")) { 1430 if (parse_u32_arg(&argc, &argv, &attr.value_size, 1431 "value size")) 1432 return -1; 1433 } else if (is_prefix(*argv, "entries")) { 1434 if (parse_u32_arg(&argc, &argv, &attr.max_entries, 1435 "max entries")) 1436 return -1; 1437 } else if (is_prefix(*argv, "flags")) { 1438 if (parse_u32_arg(&argc, &argv, &attr.map_flags, 1439 "flags")) 1440 return -1; 1441 } else if (is_prefix(*argv, "dev")) { 1442 NEXT_ARG(); 1443 1444 if (attr.map_ifindex) { 1445 p_err("offload device already specified"); 1446 return -1; 1447 } 1448 1449 attr.map_ifindex = if_nametoindex(*argv); 1450 if (!attr.map_ifindex) { 1451 p_err("unrecognized netdevice '%s': %s", 1452 *argv, strerror(errno)); 1453 return -1; 1454 } 1455 NEXT_ARG(); 1456 } else { 1457 p_err("unknown arg %s", *argv); 1458 return -1; 1459 } 1460 } 1461 1462 if (!attr.name) { 1463 p_err("map name not specified"); 1464 return -1; 1465 } 1466 1467 set_max_rlimit(); 1468 1469 fd = bpf_create_map_xattr(&attr); 1470 if (fd < 0) { 1471 p_err("map create failed: %s", strerror(errno)); 1472 return -1; 1473 } 1474 1475 err = do_pin_fd(fd, pinfile); 1476 close(fd); 1477 if (err) 1478 return err; 1479 1480 if (json_output) 1481 jsonw_null(json_wtr); 1482 return 0; 1483 } 1484 1485 static int do_pop_dequeue(int argc, char **argv) 1486 { 1487 struct bpf_map_info info = {}; 1488 __u32 len = sizeof(info); 1489 void *key, *value; 1490 int err; 1491 int fd; 1492 1493 if (argc < 2) 1494 usage(); 1495 1496 fd = map_parse_fd_and_info(&argc, &argv, &info, &len); 1497 if (fd < 0) 1498 return -1; 1499 1500 err = alloc_key_value(&info, &key, &value); 1501 if (err) 1502 goto exit_free; 1503 1504 err = bpf_map_lookup_and_delete_elem(fd, key, value); 1505 if (err) { 1506 if (errno == ENOENT) { 1507 if (json_output) 1508 jsonw_null(json_wtr); 1509 else 1510 printf("Error: empty map\n"); 1511 } else { 1512 p_err("pop failed: %s", strerror(errno)); 1513 } 1514 1515 goto exit_free; 1516 } 1517 1518 print_key_value(&info, key, value); 1519 1520 exit_free: 1521 free(key); 1522 free(value); 1523 close(fd); 1524 1525 return err; 1526 } 1527 1528 static int do_freeze(int argc, char **argv) 1529 { 1530 int err, fd; 1531 1532 if (!REQ_ARGS(2)) 1533 return -1; 1534 1535 fd = map_parse_fd(&argc, &argv); 1536 if (fd < 0) 1537 return -1; 1538 1539 if (argc) { 1540 close(fd); 1541 return BAD_ARG(); 1542 } 1543 1544 err = bpf_map_freeze(fd); 1545 close(fd); 1546 if (err) { 1547 p_err("failed to freeze map: %s", strerror(errno)); 1548 return err; 1549 } 1550 1551 if (json_output) 1552 jsonw_null(json_wtr); 1553 1554 return 0; 1555 } 1556 1557 static int do_help(int argc, char **argv) 1558 { 1559 if (json_output) { 1560 jsonw_null(json_wtr); 1561 return 0; 1562 } 1563 1564 fprintf(stderr, 1565 "Usage: %1$s %2$s { show | list } [MAP]\n" 1566 " %1$s %2$s create FILE type TYPE key KEY_SIZE value VALUE_SIZE \\\n" 1567 " entries MAX_ENTRIES name NAME [flags FLAGS] \\\n" 1568 " [dev NAME]\n" 1569 " %1$s %2$s dump MAP\n" 1570 " %1$s %2$s update MAP [key DATA] [value VALUE] [UPDATE_FLAGS]\n" 1571 " %1$s %2$s lookup MAP [key DATA]\n" 1572 " %1$s %2$s getnext MAP [key DATA]\n" 1573 " %1$s %2$s delete MAP key DATA\n" 1574 " %1$s %2$s pin MAP FILE\n" 1575 " %1$s %2$s event_pipe MAP [cpu N index M]\n" 1576 " %1$s %2$s peek MAP\n" 1577 " %1$s %2$s push MAP value VALUE\n" 1578 " %1$s %2$s pop MAP\n" 1579 " %1$s %2$s enqueue MAP value VALUE\n" 1580 " %1$s %2$s dequeue MAP\n" 1581 " %1$s %2$s freeze MAP\n" 1582 " %1$s %2$s help\n" 1583 "\n" 1584 " " HELP_SPEC_MAP "\n" 1585 " DATA := { [hex] BYTES }\n" 1586 " " HELP_SPEC_PROGRAM "\n" 1587 " VALUE := { DATA | MAP | PROG }\n" 1588 " UPDATE_FLAGS := { any | exist | noexist }\n" 1589 " TYPE := { hash | array | prog_array | perf_event_array | percpu_hash |\n" 1590 " percpu_array | stack_trace | cgroup_array | lru_hash |\n" 1591 " lru_percpu_hash | lpm_trie | array_of_maps | hash_of_maps |\n" 1592 " devmap | devmap_hash | sockmap | cpumap | xskmap | sockhash |\n" 1593 " cgroup_storage | reuseport_sockarray | percpu_cgroup_storage |\n" 1594 " queue | stack | sk_storage | struct_ops | ringbuf }\n" 1595 " " HELP_SPEC_OPTIONS "\n" 1596 "", 1597 bin_name, argv[-2]); 1598 1599 return 0; 1600 } 1601 1602 static const struct cmd cmds[] = { 1603 { "show", do_show }, 1604 { "list", do_show }, 1605 { "help", do_help }, 1606 { "dump", do_dump }, 1607 { "update", do_update }, 1608 { "lookup", do_lookup }, 1609 { "getnext", do_getnext }, 1610 { "delete", do_delete }, 1611 { "pin", do_pin }, 1612 { "event_pipe", do_event_pipe }, 1613 { "create", do_create }, 1614 { "peek", do_lookup }, 1615 { "push", do_update }, 1616 { "enqueue", do_update }, 1617 { "pop", do_pop_dequeue }, 1618 { "dequeue", do_pop_dequeue }, 1619 { "freeze", do_freeze }, 1620 { 0 } 1621 }; 1622 1623 int do_map(int argc, char **argv) 1624 { 1625 return cmd_select(cmds, argc, argv, do_help); 1626 } 1627