tools/bpf/bpftool/prog.c

   1 // SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 /* Copyright (C) 2017-2018 Netronome Systems, Inc. */
   3
   4 #define _GNU_SOURCE
   5 #include <errno.h>
   6 #include <fcntl.h>
   7 #include <signal.h>
   8 #include <stdarg.h>
   9 #include <stdio.h>
  10 #include <stdlib.h>
  11 #include <string.h>
  12 #include <time.h>
  13 #include <unistd.h>
  14 #include <net/if.h>
  15 #include <sys/ioctl.h>
  16 #include <sys/types.h>
  17 #include <sys/stat.h>
  18 #include <sys/syscall.h>
  19
  20 #include <linux/err.h>
  21 #include <linux/perf_event.h>
  22 #include <linux/sizes.h>
  23
  24 #include <bpf/bpf.h>
  25 #include <bpf/btf.h>
  26 #include <bpf/libbpf.h>
  27
  28 #include "cfg.h"
  29 #include "main.h"
  30 #include "xlated_dumper.h"
  31
  32 #define BPF_METADATA_PREFIX "bpf_metadata_"
  33 #define BPF_METADATA_PREFIX_LEN (sizeof(BPF_METADATA_PREFIX) - 1)
  34
  35 const char * const prog_type_name[] = {
  36         [BPF_PROG_TYPE_UNSPEC]                  = "unspec",
  37         [BPF_PROG_TYPE_SOCKET_FILTER]           = "socket_filter",
  38         [BPF_PROG_TYPE_KPROBE]                  = "kprobe",
  39         [BPF_PROG_TYPE_SCHED_CLS]               = "sched_cls",
  40         [BPF_PROG_TYPE_SCHED_ACT]               = "sched_act",
  41         [BPF_PROG_TYPE_TRACEPOINT]              = "tracepoint",
  42         [BPF_PROG_TYPE_XDP]                     = "xdp",
  43         [BPF_PROG_TYPE_PERF_EVENT]              = "perf_event",
  44         [BPF_PROG_TYPE_CGROUP_SKB]              = "cgroup_skb",
  45         [BPF_PROG_TYPE_CGROUP_SOCK]             = "cgroup_sock",
  46         [BPF_PROG_TYPE_LWT_IN]                  = "lwt_in",
  47         [BPF_PROG_TYPE_LWT_OUT]                 = "lwt_out",
  48         [BPF_PROG_TYPE_LWT_XMIT]                = "lwt_xmit",
  49         [BPF_PROG_TYPE_SOCK_OPS]                = "sock_ops",
  50         [BPF_PROG_TYPE_SK_SKB]                  = "sk_skb",
  51         [BPF_PROG_TYPE_CGROUP_DEVICE]           = "cgroup_device",
  52         [BPF_PROG_TYPE_SK_MSG]                  = "sk_msg",
  53         [BPF_PROG_TYPE_RAW_TRACEPOINT]          = "raw_tracepoint",
  54         [BPF_PROG_TYPE_CGROUP_SOCK_ADDR]        = "cgroup_sock_addr",
  55         [BPF_PROG_TYPE_LWT_SEG6LOCAL]           = "lwt_seg6local",
  56         [BPF_PROG_TYPE_LIRC_MODE2]              = "lirc_mode2",
  57         [BPF_PROG_TYPE_SK_REUSEPORT]            = "sk_reuseport",
  58         [BPF_PROG_TYPE_FLOW_DISSECTOR]          = "flow_dissector",
  59         [BPF_PROG_TYPE_CGROUP_SYSCTL]           = "cgroup_sysctl",
  60         [BPF_PROG_TYPE_RAW_TRACEPOINT_WRITABLE] = "raw_tracepoint_writable",
  61         [BPF_PROG_TYPE_CGROUP_SOCKOPT]          = "cgroup_sockopt",
  62         [BPF_PROG_TYPE_TRACING]                 = "tracing",
  63         [BPF_PROG_TYPE_STRUCT_OPS]              = "struct_ops",
  64         [BPF_PROG_TYPE_EXT]                     = "ext",
  65         [BPF_PROG_TYPE_LSM]                     = "lsm",
  66         [BPF_PROG_TYPE_SK_LOOKUP]               = "sk_lookup",
  67 };
  68
  69 const size_t prog_type_name_size = ARRAY_SIZE(prog_type_name);
  70
  71 enum dump_mode {
  72         DUMP_JITED,
  73         DUMP_XLATED,
  74 };
  75
  76 static const char * const attach_type_strings[] = {
  77         [BPF_SK_SKB_STREAM_PARSER] = "stream_parser",
  78         [BPF_SK_SKB_STREAM_VERDICT] = "stream_verdict",
  79         [BPF_SK_MSG_VERDICT] = "msg_verdict",
  80         [BPF_FLOW_DISSECTOR] = "flow_dissector",
  81         [__MAX_BPF_ATTACH_TYPE] = NULL,
  82 };
  83
  84 static enum bpf_attach_type parse_attach_type(const char *str)
  85 {
  86         enum bpf_attach_type type;
  87
  88         for (type = 0; type < __MAX_BPF_ATTACH_TYPE; type++) {
  89                 if (attach_type_strings[type] &&
  90                     is_prefix(str, attach_type_strings[type]))
  91                         return type;
  92         }
  93
  94         return __MAX_BPF_ATTACH_TYPE;
  95 }
  96
  97 static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)
  98 {
  99         struct timespec real_time_ts, boot_time_ts;
 100         time_t wallclock_secs;
 101         struct tm load_tm;
 102
 103         buf[--size] = '\0';
 104
 105         if (clock_gettime(CLOCK_REALTIME, &real_time_ts) ||
 106             clock_gettime(CLOCK_BOOTTIME, &boot_time_ts)) {
 107                 perror("Can't read clocks");
 108                 snprintf(buf, size, "%llu", nsecs / 1000000000);
 109                 return;
 110         }
 111
 112         wallclock_secs = (real_time_ts.tv_sec - boot_time_ts.tv_sec) +
 113                 (real_time_ts.tv_nsec - boot_time_ts.tv_nsec + nsecs) /
 114                 1000000000;
 115
 116
 117         if (!localtime_r(&wallclock_secs, &load_tm)) {
 118                 snprintf(buf, size, "%llu", nsecs / 1000000000);
 119                 return;
 120         }
 121
 122         if (json_output)
 123                 strftime(buf, size, "%s", &load_tm);
 124         else
 125                 strftime(buf, size, "%FT%T%z", &load_tm);
 126 }
 127
 128 static void show_prog_maps(int fd, __u32 num_maps)
 129 {
 130         struct bpf_prog_info info = {};
 131         __u32 len = sizeof(info);
 132         __u32 map_ids[num_maps];
 133         unsigned int i;
 134         int err;
 135
 136         info.nr_map_ids = num_maps;
 137         info.map_ids = ptr_to_u64(map_ids);
 138
 139         err = bpf_obj_get_info_by_fd(fd, &info, &len);
 140         if (err || !info.nr_map_ids)
 141                 return;
 142
 143         if (json_output) {
 144                 jsonw_name(json_wtr, "map_ids");
 145                 jsonw_start_array(json_wtr);
 146                 for (i = 0; i < info.nr_map_ids; i++)
 147                         jsonw_uint(json_wtr, map_ids[i]);
 148                 jsonw_end_array(json_wtr);
 149         } else {
 150                 printf("  map_ids ");
 151                 for (i = 0; i < info.nr_map_ids; i++)
 152                         printf("%u%s", map_ids[i],
 153                                i == info.nr_map_ids - 1 ? "" : ",");
 154         }
 155 }
 156
 157 static void *find_metadata(int prog_fd, struct bpf_map_info *map_info)
 158 {
 159         struct bpf_prog_info prog_info;
 160         __u32 prog_info_len;
 161         __u32 map_info_len;
 162         void *value = NULL;
 163         __u32 *map_ids;
 164         int nr_maps;
 165         int key = 0;
 166         int map_fd;
 167         int ret;
 168         __u32 i;
 169
 170         memset(&prog_info, 0, sizeof(prog_info));
 171         prog_info_len = sizeof(prog_info);
 172         ret = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &prog_info_len);
 173         if (ret)
 174                 return NULL;
 175
 176         if (!prog_info.nr_map_ids)
 177                 return NULL;
 178
 179         map_ids = calloc(prog_info.nr_map_ids, sizeof(__u32));
 180         if (!map_ids)
 181                 return NULL;
 182
 183         nr_maps = prog_info.nr_map_ids;
 184         memset(&prog_info, 0, sizeof(prog_info));
 185         prog_info.nr_map_ids = nr_maps;
 186         prog_info.map_ids = ptr_to_u64(map_ids);
 187         prog_info_len = sizeof(prog_info);
 188
 189         ret = bpf_obj_get_info_by_fd(prog_fd, &prog_info, &prog_info_len);
 190         if (ret)
 191                 goto free_map_ids;
 192
 193         for (i = 0; i < prog_info.nr_map_ids; i++) {
 194                 map_fd = bpf_map_get_fd_by_id(map_ids[i]);
 195                 if (map_fd < 0)
 196                         goto free_map_ids;
 197
 198                 memset(map_info, 0, sizeof(*map_info));
 199                 map_info_len = sizeof(*map_info);
 200                 ret = bpf_obj_get_info_by_fd(map_fd, map_info, &map_info_len);
 201                 if (ret < 0) {
 202                         close(map_fd);
 203                         goto free_map_ids;
 204                 }
 205
 206                 if (map_info->type != BPF_MAP_TYPE_ARRAY ||
 207                     map_info->key_size != sizeof(int) ||
 208                     map_info->max_entries != 1 ||
 209                     !map_info->btf_value_type_id ||
 210                     !strstr(map_info->name, ".rodata")) {
 211                         close(map_fd);
 212                         continue;
 213                 }
 214
 215                 value = malloc(map_info->value_size);
 216                 if (!value) {
 217                         close(map_fd);
 218                         goto free_map_ids;
 219                 }
 220
 221                 if (bpf_map_lookup_elem(map_fd, &key, value)) {
 222                         close(map_fd);
 223                         free(value);
 224                         value = NULL;
 225                         goto free_map_ids;
 226                 }
 227
 228                 close(map_fd);
 229                 break;
 230         }
 231
 232 free_map_ids:
 233         free(map_ids);
 234         return value;
 235 }
 236
 237 static bool has_metadata_prefix(const char *s)
 238 {
 239         return strncmp(s, BPF_METADATA_PREFIX, BPF_METADATA_PREFIX_LEN) == 0;
 240 }
 241
 242 static void show_prog_metadata(int fd, __u32 num_maps)
 243 {
 244         const struct btf_type *t_datasec, *t_var;
 245         struct bpf_map_info map_info;
 246         struct btf_var_secinfo *vsi;
 247         bool printed_header = false;
 248         struct btf *btf = NULL;
 249         unsigned int i, vlen;
 250         void *value = NULL;
 251         const char *name;
 252         int err;
 253
 254         if (!num_maps)
 255                 return;
 256
 257         memset(&map_info, 0, sizeof(map_info));
 258         value = find_metadata(fd, &map_info);
 259         if (!value)
 260                 return;
 261
 262         err = btf__get_from_id(map_info.btf_id, &btf);
 263         if (err || !btf)
 264                 goto out_free;
 265
 266         t_datasec = btf__type_by_id(btf, map_info.btf_value_type_id);
 267         if (!btf_is_datasec(t_datasec))
 268                 goto out_free;
 269
 270         vlen = btf_vlen(t_datasec);
 271         vsi = btf_var_secinfos(t_datasec);
 272
 273         /* We don't proceed to check the kinds of the elements of the DATASEC.
 274          * The verifier enforces them to be BTF_KIND_VAR.
 275          */
 276
 277         if (json_output) {
 278                 struct btf_dumper d = {
 279                         .btf = btf,
 280                         .jw = json_wtr,
 281                         .is_plain_text = false,
 282                 };
 283
 284                 for (i = 0; i < vlen; i++, vsi++) {
 285                         t_var = btf__type_by_id(btf, vsi->type);
 286                         name = btf__name_by_offset(btf, t_var->name_off);
 287
 288                         if (!has_metadata_prefix(name))
 289                                 continue;
 290
 291                         if (!printed_header) {
 292                                 jsonw_name(json_wtr, "metadata");
 293                                 jsonw_start_object(json_wtr);
 294                                 printed_header = true;
 295                         }
 296
 297                         jsonw_name(json_wtr, name + BPF_METADATA_PREFIX_LEN);
 298                         err = btf_dumper_type(&d, t_var->type, value + vsi->offset);
 299                         if (err) {
 300                                 p_err("btf dump failed: %d", err);
 301                                 break;
 302                         }
 303                 }
 304                 if (printed_header)
 305                         jsonw_end_object(json_wtr);
 306         } else {
 307                 json_writer_t *btf_wtr = jsonw_new(stdout);
 308                 struct btf_dumper d = {
 309                         .btf = btf,
 310                         .jw = btf_wtr,
 311                         .is_plain_text = true,
 312                 };
 313
 314                 if (!btf_wtr) {
 315                         p_err("jsonw alloc failed");
 316                         goto out_free;
 317                 }
 318
 319                 for (i = 0; i < vlen; i++, vsi++) {
 320                         t_var = btf__type_by_id(btf, vsi->type);
 321                         name = btf__name_by_offset(btf, t_var->name_off);
 322
 323                         if (!has_metadata_prefix(name))
 324                                 continue;
 325
 326                         if (!printed_header) {
 327                                 printf("\tmetadata:");
 328                                 printed_header = true;
 329                         }
 330
 331                         printf("\n\t\t%s = ", name + BPF_METADATA_PREFIX_LEN);
 332
 333                         jsonw_reset(btf_wtr);
 334                         err = btf_dumper_type(&d, t_var->type, value + vsi->offset);
 335                         if (err) {
 336                                 p_err("btf dump failed: %d", err);
 337                                 break;
 338                         }
 339                 }
 340                 if (printed_header)
 341                         jsonw_destroy(&btf_wtr);
 342         }
 343
 344 out_free:
 345         btf__free(btf);
 346         free(value);
 347 }
 348
 349 static void print_prog_header_json(struct bpf_prog_info *info)
 350 {
 351         jsonw_uint_field(json_wtr, "id", info->id);
 352         if (info->type < ARRAY_SIZE(prog_type_name))
 353                 jsonw_string_field(json_wtr, "type",
 354                                    prog_type_name[info->type]);
 355         else
 356                 jsonw_uint_field(json_wtr, "type", info->type);
 357
 358         if (*info->name)
 359                 jsonw_string_field(json_wtr, "name", info->name);
 360
 361         jsonw_name(json_wtr, "tag");
 362         jsonw_printf(json_wtr, "\"" BPF_TAG_FMT "\"",
 363                      info->tag[0], info->tag[1], info->tag[2], info->tag[3],
 364                      info->tag[4], info->tag[5], info->tag[6], info->tag[7]);
 365
 366         jsonw_bool_field(json_wtr, "gpl_compatible", info->gpl_compatible);
 367         if (info->run_time_ns) {
 368                 jsonw_uint_field(json_wtr, "run_time_ns", info->run_time_ns);
 369                 jsonw_uint_field(json_wtr, "run_cnt", info->run_cnt);
 370         }
 371 }
 372
 373 static void print_prog_json(struct bpf_prog_info *info, int fd)
 374 {
 375         char *memlock;
 376
 377         jsonw_start_object(json_wtr);
 378         print_prog_header_json(info);
 379         print_dev_json(info->ifindex, info->netns_dev, info->netns_ino);
 380
 381         if (info->load_time) {
 382                 char buf[32];
 383
 384                 print_boot_time(info->load_time, buf, sizeof(buf));
 385
 386                 /* Piggy back on load_time, since 0 uid is a valid one */
 387                 jsonw_name(json_wtr, "loaded_at");
 388                 jsonw_printf(json_wtr, "%s", buf);
 389                 jsonw_uint_field(json_wtr, "uid", info->created_by_uid);
 390         }
 391
 392         jsonw_uint_field(json_wtr, "bytes_xlated", info->xlated_prog_len);
 393
 394         if (info->jited_prog_len) {
 395                 jsonw_bool_field(json_wtr, "jited", true);
 396                 jsonw_uint_field(json_wtr, "bytes_jited", info->jited_prog_len);
 397         } else {
 398                 jsonw_bool_field(json_wtr, "jited", false);
 399         }
 400
 401         memlock = get_fdinfo(fd, "memlock");
 402         if (memlock)
 403                 jsonw_int_field(json_wtr, "bytes_memlock", atoi(memlock));
 404         free(memlock);
 405
 406         if (info->nr_map_ids)
 407                 show_prog_maps(fd, info->nr_map_ids);
 408
 409         if (info->btf_id)
 410                 jsonw_int_field(json_wtr, "btf_id", info->btf_id);
 411
 412         if (!hash_empty(prog_table.table)) {
 413                 struct pinned_obj *obj;
 414
 415                 jsonw_name(json_wtr, "pinned");
 416                 jsonw_start_array(json_wtr);
 417                 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
 418                         if (obj->id == info->id)
 419                                 jsonw_string(json_wtr, obj->path);
 420                 }
 421                 jsonw_end_array(json_wtr);
 422         }
 423
 424         emit_obj_refs_json(&refs_table, info->id, json_wtr);
 425
 426         show_prog_metadata(fd, info->nr_map_ids);
 427
 428         jsonw_end_object(json_wtr);
 429 }
 430
 431 static void print_prog_header_plain(struct bpf_prog_info *info)
 432 {
 433         printf("%u: ", info->id);
 434         if (info->type < ARRAY_SIZE(prog_type_name))
 435                 printf("%s  ", prog_type_name[info->type]);
 436         else
 437                 printf("type %u  ", info->type);
 438
 439         if (*info->name)
 440                 printf("name %s  ", info->name);
 441
 442         printf("tag ");
 443         fprint_hex(stdout, info->tag, BPF_TAG_SIZE, "");
 444         print_dev_plain(info->ifindex, info->netns_dev, info->netns_ino);
 445         printf("%s", info->gpl_compatible ? "  gpl" : "");
 446         if (info->run_time_ns)
 447                 printf(" run_time_ns %lld run_cnt %lld",
 448                        info->run_time_ns, info->run_cnt);
 449         printf("\n");
 450 }
 451
 452 static void print_prog_plain(struct bpf_prog_info *info, int fd)
 453 {
 454         char *memlock;
 455
 456         print_prog_header_plain(info);
 457
 458         if (info->load_time) {
 459                 char buf[32];
 460
 461                 print_boot_time(info->load_time, buf, sizeof(buf));
 462
 463                 /* Piggy back on load_time, since 0 uid is a valid one */
 464                 printf("\tloaded_at %s  uid %u\n", buf, info->created_by_uid);
 465         }
 466
 467         printf("\txlated %uB", info->xlated_prog_len);
 468
 469         if (info->jited_prog_len)
 470                 printf("  jited %uB", info->jited_prog_len);
 471         else
 472                 printf("  not jited");
 473
 474         memlock = get_fdinfo(fd, "memlock");
 475         if (memlock)
 476                 printf("  memlock %sB", memlock);
 477         free(memlock);
 478
 479         if (info->nr_map_ids)
 480                 show_prog_maps(fd, info->nr_map_ids);
 481
 482         if (!hash_empty(prog_table.table)) {
 483                 struct pinned_obj *obj;
 484
 485                 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
 486                         if (obj->id == info->id)
 487                                 printf("\n\tpinned %s", obj->path);
 488                 }
 489         }
 490
 491         if (info->btf_id)
 492                 printf("\n\tbtf_id %d", info->btf_id);
 493
 494         emit_obj_refs_plain(&refs_table, info->id, "\n\tpids ");
 495
 496         printf("\n");
 497
 498         show_prog_metadata(fd, info->nr_map_ids);
 499 }
 500
 501 static int show_prog(int fd)
 502 {
 503         struct bpf_prog_info info = {};
 504         __u32 len = sizeof(info);
 505         int err;
 506
 507         err = bpf_obj_get_info_by_fd(fd, &info, &len);
 508         if (err) {
 509                 p_err("can't get prog info: %s", strerror(errno));
 510                 return -1;
 511         }
 512
 513         if (json_output)
 514                 print_prog_json(&info, fd);
 515         else
 516                 print_prog_plain(&info, fd);
 517
 518         return 0;
 519 }
 520
 521 static int do_show_subset(int argc, char **argv)
 522 {
 523         int *fds = NULL;
 524         int nb_fds, i;
 525         int err = -1;
 526
 527         fds = malloc(sizeof(int));
 528         if (!fds) {
 529                 p_err("mem alloc failed");
 530                 return -1;
 531         }
 532         nb_fds = prog_parse_fds(&argc, &argv, &fds);
 533         if (nb_fds < 1)
 534                 goto exit_free;
 535
 536         if (json_output && nb_fds > 1)
 537                 jsonw_start_array(json_wtr);    /* root array */
 538         for (i = 0; i < nb_fds; i++) {
 539                 err = show_prog(fds[i]);
 540                 if (err) {
 541                         for (; i < nb_fds; i++)
 542                                 close(fds[i]);
 543                         break;
 544                 }
 545                 close(fds[i]);
 546         }
 547         if (json_output && nb_fds > 1)
 548                 jsonw_end_array(json_wtr);      /* root array */
 549
 550 exit_free:
 551         free(fds);
 552         return err;
 553 }
 554
 555 static int do_show(int argc, char **argv)
 556 {
 557         __u32 id = 0;
 558         int err;
 559         int fd;
 560
 561         if (show_pinned)
 562                 build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
 563         build_obj_refs_table(&refs_table, BPF_OBJ_PROG);
 564
 565         if (argc == 2)
 566                 return do_show_subset(argc, argv);
 567
 568         if (argc)
 569                 return BAD_ARG();
 570
 571         if (json_output)
 572                 jsonw_start_array(json_wtr);
 573         while (true) {
 574                 err = bpf_prog_get_next_id(id, &id);
 575                 if (err) {
 576                         if (errno == ENOENT) {
 577                                 err = 0;
 578                                 break;
 579                         }
 580                         p_err("can't get next program: %s%s", strerror(errno),
 581                               errno == EINVAL ? " -- kernel too old?" : "");
 582                         err = -1;
 583                         break;
 584                 }
 585
 586                 fd = bpf_prog_get_fd_by_id(id);
 587                 if (fd < 0) {
 588                         if (errno == ENOENT)
 589                                 continue;
 590                         p_err("can't get prog by id (%u): %s",
 591                               id, strerror(errno));
 592                         err = -1;
 593                         break;
 594                 }
 595
 596                 err = show_prog(fd);
 597                 close(fd);
 598                 if (err)
 599                         break;
 600         }
 601
 602         if (json_output)
 603                 jsonw_end_array(json_wtr);
 604
 605         delete_obj_refs_table(&refs_table);
 606
 607         return err;
 608 }
 609
 610 static int
 611 prog_dump(struct bpf_prog_info *info, enum dump_mode mode,
 612           char *filepath, bool opcodes, bool visual, bool linum)
 613 {
 614         struct bpf_prog_linfo *prog_linfo = NULL;
 615         const char *disasm_opt = NULL;
 616         struct dump_data dd = {};
 617         void *func_info = NULL;
 618         struct btf *btf = NULL;
 619         char func_sig[1024];
 620         unsigned char *buf;
 621         __u32 member_len;
 622         ssize_t n;
 623         int fd;
 624
 625         if (mode == DUMP_JITED) {
 626                 if (info->jited_prog_len == 0 || !info->jited_prog_insns) {
 627                         p_info("no instructions returned");
 628                         return -1;
 629                 }
 630                 buf = u64_to_ptr(info->jited_prog_insns);
 631                 member_len = info->jited_prog_len;
 632         } else {        /* DUMP_XLATED */
 633                 if (info->xlated_prog_len == 0 || !info->xlated_prog_insns) {
 634                         p_err("error retrieving insn dump: kernel.kptr_restrict set?");
 635                         return -1;
 636                 }
 637                 buf = u64_to_ptr(info->xlated_prog_insns);
 638                 member_len = info->xlated_prog_len;
 639         }
 640
 641         if (info->btf_id && btf__get_from_id(info->btf_id, &btf)) {
 642                 p_err("failed to get btf");
 643                 return -1;
 644         }
 645
 646         func_info = u64_to_ptr(info->func_info);
 647
 648         if (info->nr_line_info) {
 649                 prog_linfo = bpf_prog_linfo__new(info);
 650                 if (!prog_linfo)
 651                         p_info("error in processing bpf_line_info.  continue without it.");
 652         }
 653
 654         if (filepath) {
 655                 fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
 656                 if (fd < 0) {
 657                         p_err("can't open file %s: %s", filepath,
 658                               strerror(errno));
 659                         return -1;
 660                 }
 661
 662                 n = write(fd, buf, member_len);
 663                 close(fd);
 664                 if (n != (ssize_t)member_len) {
 665                         p_err("error writing output file: %s",
 666                               n < 0 ? strerror(errno) : "short write");
 667                         return -1;
 668                 }
 669
 670                 if (json_output)
 671                         jsonw_null(json_wtr);
 672         } else if (mode == DUMP_JITED) {
 673                 const char *name = NULL;
 674
 675                 if (info->ifindex) {
 676                         name = ifindex_to_bfd_params(info->ifindex,
 677                                                      info->netns_dev,
 678                                                      info->netns_ino,
 679                                                      &disasm_opt);
 680                         if (!name)
 681                                 return -1;
 682                 }
 683
 684                 if (info->nr_jited_func_lens && info->jited_func_lens) {
 685                         struct kernel_sym *sym = NULL;
 686                         struct bpf_func_info *record;
 687                         char sym_name[SYM_MAX_NAME];
 688                         unsigned char *img = buf;
 689                         __u64 *ksyms = NULL;
 690                         __u32 *lens;
 691                         __u32 i;
 692                         if (info->nr_jited_ksyms) {
 693                                 kernel_syms_load(&dd);
 694                                 ksyms = u64_to_ptr(info->jited_ksyms);
 695                         }
 696
 697                         if (json_output)
 698                                 jsonw_start_array(json_wtr);
 699
 700                         lens = u64_to_ptr(info->jited_func_lens);
 701                         for (i = 0; i < info->nr_jited_func_lens; i++) {
 702                                 if (ksyms) {
 703                                         sym = kernel_syms_search(&dd, ksyms[i]);
 704                                         if (sym)
 705                                                 sprintf(sym_name, "%s", sym->name);
 706                                         else
 707                                                 sprintf(sym_name, "0x%016llx", ksyms[i]);
 708                                 } else {
 709                                         strcpy(sym_name, "unknown");
 710                                 }
 711
 712                                 if (func_info) {
 713                                         record = func_info + i * info->func_info_rec_size;
 714                                         btf_dumper_type_only(btf, record->type_id,
 715                                                              func_sig,
 716                                                              sizeof(func_sig));
 717                                 }
 718
 719                                 if (json_output) {
 720                                         jsonw_start_object(json_wtr);
 721                                         if (func_info && func_sig[0] != '\0') {
 722                                                 jsonw_name(json_wtr, "proto");
 723                                                 jsonw_string(json_wtr, func_sig);
 724                                         }
 725                                         jsonw_name(json_wtr, "name");
 726                                         jsonw_string(json_wtr, sym_name);
 727                                         jsonw_name(json_wtr, "insns");
 728                                 } else {
 729                                         if (func_info && func_sig[0] != '\0')
 730                                                 printf("%s:\n", func_sig);
 731                                         printf("%s:\n", sym_name);
 732                                 }
 733
 734                                 disasm_print_insn(img, lens[i], opcodes,
 735                                                   name, disasm_opt, btf,
 736                                                   prog_linfo, ksyms[i], i,
 737                                                   linum);
 738
 739                                 img += lens[i];
 740
 741                                 if (json_output)
 742                                         jsonw_end_object(json_wtr);
 743                                 else
 744                                         printf("\n");
 745                         }
 746
 747                         if (json_output)
 748                                 jsonw_end_array(json_wtr);
 749                 } else {
 750                         disasm_print_insn(buf, member_len, opcodes, name,
 751                                           disasm_opt, btf, NULL, 0, 0, false);
 752                 }
 753         } else if (visual) {
 754                 if (json_output)
 755                         jsonw_null(json_wtr);
 756                 else
 757                         dump_xlated_cfg(buf, member_len);
 758         } else {
 759                 kernel_syms_load(&dd);
 760                 dd.nr_jited_ksyms = info->nr_jited_ksyms;
 761                 dd.jited_ksyms = u64_to_ptr(info->jited_ksyms);
 762                 dd.btf = btf;
 763                 dd.func_info = func_info;
 764                 dd.finfo_rec_size = info->func_info_rec_size;
 765                 dd.prog_linfo = prog_linfo;
 766
 767                 if (json_output)
 768                         dump_xlated_json(&dd, buf, member_len, opcodes,
 769                                          linum);
 770                 else
 771                         dump_xlated_plain(&dd, buf, member_len, opcodes,
 772                                           linum);
 773                 kernel_syms_destroy(&dd);
 774         }
 775
 776         return 0;
 777 }
 778
 779 static int do_dump(int argc, char **argv)
 780 {
 781         struct bpf_prog_info_linear *info_linear;
 782         char *filepath = NULL;
 783         bool opcodes = false;
 784         bool visual = false;
 785         enum dump_mode mode;
 786         bool linum = false;
 787         int *fds = NULL;
 788         int nb_fds, i = 0;
 789         int err = -1;
 790         __u64 arrays;
 791
 792         if (is_prefix(*argv, "jited")) {
 793                 if (disasm_init())
 794                         return -1;
 795                 mode = DUMP_JITED;
 796         } else if (is_prefix(*argv, "xlated")) {
 797                 mode = DUMP_XLATED;
 798         } else {
 799                 p_err("expected 'xlated' or 'jited', got: %s", *argv);
 800                 return -1;
 801         }
 802         NEXT_ARG();
 803
 804         if (argc < 2)
 805                 usage();
 806
 807         fds = malloc(sizeof(int));
 808         if (!fds) {
 809                 p_err("mem alloc failed");
 810                 return -1;
 811         }
 812         nb_fds = prog_parse_fds(&argc, &argv, &fds);
 813         if (nb_fds < 1)
 814                 goto exit_free;
 815
 816         if (is_prefix(*argv, "file")) {
 817                 NEXT_ARG();
 818                 if (!argc) {
 819                         p_err("expected file path");
 820                         goto exit_close;
 821                 }
 822                 if (nb_fds > 1) {
 823                         p_err("several programs matched");
 824                         goto exit_close;
 825                 }
 826
 827                 filepath = *argv;
 828                 NEXT_ARG();
 829         } else if (is_prefix(*argv, "opcodes")) {
 830                 opcodes = true;
 831                 NEXT_ARG();
 832         } else if (is_prefix(*argv, "visual")) {
 833                 if (nb_fds > 1) {
 834                         p_err("several programs matched");
 835                         goto exit_close;
 836                 }
 837
 838                 visual = true;
 839                 NEXT_ARG();
 840         } else if (is_prefix(*argv, "linum")) {
 841                 linum = true;
 842                 NEXT_ARG();
 843         }
 844
 845         if (argc) {
 846                 usage();
 847                 goto exit_close;
 848         }
 849
 850         if (mode == DUMP_JITED)
 851                 arrays = 1UL << BPF_PROG_INFO_JITED_INSNS;
 852         else
 853                 arrays = 1UL << BPF_PROG_INFO_XLATED_INSNS;
 854
 855         arrays |= 1UL << BPF_PROG_INFO_JITED_KSYMS;
 856         arrays |= 1UL << BPF_PROG_INFO_JITED_FUNC_LENS;
 857         arrays |= 1UL << BPF_PROG_INFO_FUNC_INFO;
 858         arrays |= 1UL << BPF_PROG_INFO_LINE_INFO;
 859         arrays |= 1UL << BPF_PROG_INFO_JITED_LINE_INFO;
 860
 861         if (json_output && nb_fds > 1)
 862                 jsonw_start_array(json_wtr);    /* root array */
 863         for (i = 0; i < nb_fds; i++) {
 864                 info_linear = bpf_program__get_prog_info_linear(fds[i], arrays);
 865                 if (IS_ERR_OR_NULL(info_linear)) {
 866                         p_err("can't get prog info: %s", strerror(errno));
 867                         break;
 868                 }
 869
 870                 if (json_output && nb_fds > 1) {
 871                         jsonw_start_object(json_wtr);   /* prog object */
 872                         print_prog_header_json(&info_linear->info);
 873                         jsonw_name(json_wtr, "insns");
 874                 } else if (nb_fds > 1) {
 875                         print_prog_header_plain(&info_linear->info);
 876                 }
 877
 878                 err = prog_dump(&info_linear->info, mode, filepath, opcodes,
 879                                 visual, linum);
 880
 881                 if (json_output && nb_fds > 1)
 882                         jsonw_end_object(json_wtr);     /* prog object */
 883                 else if (i != nb_fds - 1 && nb_fds > 1)
 884                         printf("\n");
 885
 886                 free(info_linear);
 887                 if (err)
 888                         break;
 889                 close(fds[i]);
 890         }
 891         if (json_output && nb_fds > 1)
 892                 jsonw_end_array(json_wtr);      /* root array */
 893
 894 exit_close:
 895         for (; i < nb_fds; i++)
 896                 close(fds[i]);
 897 exit_free:
 898         free(fds);
 899         return err;
 900 }
 901
 902 static int do_pin(int argc, char **argv)
 903 {
 904         int err;
 905
 906         err = do_pin_any(argc, argv, prog_parse_fd);
 907         if (!err && json_output)
 908                 jsonw_null(json_wtr);
 909         return err;
 910 }
 911
 912 struct map_replace {
 913         int idx;
 914         int fd;
 915         char *name;
 916 };
 917
 918 static int map_replace_compar(const void *p1, const void *p2)
 919 {
 920         const struct map_replace *a = p1, *b = p2;
 921
 922         return a->idx - b->idx;
 923 }
 924
 925 static int parse_attach_detach_args(int argc, char **argv, int *progfd,
 926                                     enum bpf_attach_type *attach_type,
 927                                     int *mapfd)
 928 {
 929         if (!REQ_ARGS(3))
 930                 return -EINVAL;
 931
 932         *progfd = prog_parse_fd(&argc, &argv);
 933         if (*progfd < 0)
 934                 return *progfd;
 935
 936         *attach_type = parse_attach_type(*argv);
 937         if (*attach_type == __MAX_BPF_ATTACH_TYPE) {
 938                 p_err("invalid attach/detach type");
 939                 return -EINVAL;
 940         }
 941
 942         if (*attach_type == BPF_FLOW_DISSECTOR) {
 943                 *mapfd = -1;
 944                 return 0;
 945         }
 946
 947         NEXT_ARG();
 948         if (!REQ_ARGS(2))
 949                 return -EINVAL;
 950
 951         *mapfd = map_parse_fd(&argc, &argv);
 952         if (*mapfd < 0)
 953                 return *mapfd;
 954
 955         return 0;
 956 }
 957
 958 static int do_attach(int argc, char **argv)
 959 {
 960         enum bpf_attach_type attach_type;
 961         int err, progfd;
 962         int mapfd;
 963
 964         err = parse_attach_detach_args(argc, argv,
 965                                        &progfd, &attach_type, &mapfd);
 966         if (err)
 967                 return err;
 968
 969         err = bpf_prog_attach(progfd, mapfd, attach_type, 0);
 970         if (err) {
 971                 p_err("failed prog attach to map");
 972                 return -EINVAL;
 973         }
 974
 975         if (json_output)
 976                 jsonw_null(json_wtr);
 977         return 0;
 978 }
 979
 980 static int do_detach(int argc, char **argv)
 981 {
 982         enum bpf_attach_type attach_type;
 983         int err, progfd;
 984         int mapfd;
 985
 986         err = parse_attach_detach_args(argc, argv,
 987                                        &progfd, &attach_type, &mapfd);
 988         if (err)
 989                 return err;
 990
 991         err = bpf_prog_detach2(progfd, mapfd, attach_type);
 992         if (err) {
 993                 p_err("failed prog detach from map");
 994                 return -EINVAL;
 995         }
 996
 997         if (json_output)
 998                 jsonw_null(json_wtr);
 999         return 0;
1000 }
1001
1002 static int check_single_stdin(char *file_data_in, char *file_ctx_in)
1003 {
1004         if (file_data_in && file_ctx_in &&
1005             !strcmp(file_data_in, "-") && !strcmp(file_ctx_in, "-")) {
1006                 p_err("cannot use standard input for both data_in and ctx_in");
1007                 return -1;
1008         }
1009
1010         return 0;
1011 }
1012
1013 static int get_run_data(const char *fname, void **data_ptr, unsigned int *size)
1014 {
1015         size_t block_size = 256;
1016         size_t buf_size = block_size;
1017         size_t nb_read = 0;
1018         void *tmp;
1019         FILE *f;
1020
1021         if (!fname) {
1022                 *data_ptr = NULL;
1023                 *size = 0;
1024                 return 0;
1025         }
1026
1027         if (!strcmp(fname, "-"))
1028                 f = stdin;
1029         else
1030                 f = fopen(fname, "r");
1031         if (!f) {
1032                 p_err("failed to open %s: %s", fname, strerror(errno));
1033                 return -1;
1034         }
1035
1036         *data_ptr = malloc(block_size);
1037         if (!*data_ptr) {
1038                 p_err("failed to allocate memory for data_in/ctx_in: %s",
1039                       strerror(errno));
1040                 goto err_fclose;
1041         }
1042
1043         while ((nb_read += fread(*data_ptr + nb_read, 1, block_size, f))) {
1044                 if (feof(f))
1045                         break;
1046                 if (ferror(f)) {
1047                         p_err("failed to read data_in/ctx_in from %s: %s",
1048                               fname, strerror(errno));
1049                         goto err_free;
1050                 }
1051                 if (nb_read > buf_size - block_size) {
1052                         if (buf_size == UINT32_MAX) {
1053                                 p_err("data_in/ctx_in is too long (max: %d)",
1054                                       UINT32_MAX);
1055                                 goto err_free;
1056                         }
1057                         /* No space for fread()-ing next chunk; realloc() */
1058                         buf_size *= 2;
1059                         tmp = realloc(*data_ptr, buf_size);
1060                         if (!tmp) {
1061                                 p_err("failed to reallocate data_in/ctx_in: %s",
1062                                       strerror(errno));
1063                                 goto err_free;
1064                         }
1065                         *data_ptr = tmp;
1066                 }
1067         }
1068         if (f != stdin)
1069                 fclose(f);
1070
1071         *size = nb_read;
1072         return 0;
1073
1074 err_free:
1075         free(*data_ptr);
1076         *data_ptr = NULL;
1077 err_fclose:
1078         if (f != stdin)
1079                 fclose(f);
1080         return -1;
1081 }
1082
1083 static void hex_print(void *data, unsigned int size, FILE *f)
1084 {
1085         size_t i, j;
1086         char c;
1087
1088         for (i = 0; i < size; i += 16) {
1089                 /* Row offset */
1090                 fprintf(f, "%07zx\t", i);
1091
1092                 /* Hexadecimal values */
1093                 for (j = i; j < i + 16 && j < size; j++)
1094                         fprintf(f, "%02x%s", *(uint8_t *)(data + j),
1095                                 j % 2 ? " " : "");
1096                 for (; j < i + 16; j++)
1097                         fprintf(f, "  %s", j % 2 ? " " : "");
1098
1099                 /* ASCII values (if relevant), '.' otherwise */
1100                 fprintf(f, "| ");
1101                 for (j = i; j < i + 16 && j < size; j++) {
1102                         c = *(char *)(data + j);
1103                         if (c < ' ' || c > '~')
1104                                 c = '.';
1105                         fprintf(f, "%c%s", c, j == i + 7 ? " " : "");
1106                 }
1107
1108                 fprintf(f, "\n");
1109         }
1110 }
1111
1112 static int
1113 print_run_output(void *data, unsigned int size, const char *fname,
1114                  const char *json_key)
1115 {
1116         size_t nb_written;
1117         FILE *f;
1118
1119         if (!fname)
1120                 return 0;
1121
1122         if (!strcmp(fname, "-")) {
1123                 f = stdout;
1124                 if (json_output) {
1125                         jsonw_name(json_wtr, json_key);
1126                         print_data_json(data, size);
1127                 } else {
1128                         hex_print(data, size, f);
1129                 }
1130                 return 0;
1131         }
1132
1133         f = fopen(fname, "w");
1134         if (!f) {
1135                 p_err("failed to open %s: %s", fname, strerror(errno));
1136                 return -1;
1137         }
1138
1139         nb_written = fwrite(data, 1, size, f);
1140         fclose(f);
1141         if (nb_written != size) {
1142                 p_err("failed to write output data/ctx: %s", strerror(errno));
1143                 return -1;
1144         }
1145
1146         return 0;
1147 }
1148
1149 static int alloc_run_data(void **data_ptr, unsigned int size_out)
1150 {
1151         *data_ptr = calloc(size_out, 1);
1152         if (!*data_ptr) {
1153                 p_err("failed to allocate memory for output data/ctx: %s",
1154                       strerror(errno));
1155                 return -1;
1156         }
1157
1158         return 0;
1159 }
1160
1161 static int do_run(int argc, char **argv)
1162 {
1163         char *data_fname_in = NULL, *data_fname_out = NULL;
1164         char *ctx_fname_in = NULL, *ctx_fname_out = NULL;
1165         struct bpf_prog_test_run_attr test_attr = {0};
1166         const unsigned int default_size = SZ_32K;
1167         void *data_in = NULL, *data_out = NULL;
1168         void *ctx_in = NULL, *ctx_out = NULL;
1169         unsigned int repeat = 1;
1170         int fd, err;
1171
1172         if (!REQ_ARGS(4))
1173                 return -1;
1174
1175         fd = prog_parse_fd(&argc, &argv);
1176         if (fd < 0)
1177                 return -1;
1178
1179         while (argc) {
1180                 if (detect_common_prefix(*argv, "data_in", "data_out",
1181                                          "data_size_out", NULL))
1182                         return -1;
1183                 if (detect_common_prefix(*argv, "ctx_in", "ctx_out",
1184                                          "ctx_size_out", NULL))
1185                         return -1;
1186
1187                 if (is_prefix(*argv, "data_in")) {
1188                         NEXT_ARG();
1189                         if (!REQ_ARGS(1))
1190                                 return -1;
1191
1192                         data_fname_in = GET_ARG();
1193                         if (check_single_stdin(data_fname_in, ctx_fname_in))
1194                                 return -1;
1195                 } else if (is_prefix(*argv, "data_out")) {
1196                         NEXT_ARG();
1197                         if (!REQ_ARGS(1))
1198                                 return -1;
1199
1200                         data_fname_out = GET_ARG();
1201                 } else if (is_prefix(*argv, "data_size_out")) {
1202                         char *endptr;
1203
1204                         NEXT_ARG();
1205                         if (!REQ_ARGS(1))
1206                                 return -1;
1207
1208                         test_attr.data_size_out = strtoul(*argv, &endptr, 0);
1209                         if (*endptr) {
1210                                 p_err("can't parse %s as output data size",
1211                                       *argv);
1212                                 return -1;
1213                         }
1214                         NEXT_ARG();
1215                 } else if (is_prefix(*argv, "ctx_in")) {
1216                         NEXT_ARG();
1217                         if (!REQ_ARGS(1))
1218                                 return -1;
1219
1220                         ctx_fname_in = GET_ARG();
1221                         if (check_single_stdin(data_fname_in, ctx_fname_in))
1222                                 return -1;
1223                 } else if (is_prefix(*argv, "ctx_out")) {
1224                         NEXT_ARG();
1225                         if (!REQ_ARGS(1))
1226                                 return -1;
1227
1228                         ctx_fname_out = GET_ARG();
1229                 } else if (is_prefix(*argv, "ctx_size_out")) {
1230                         char *endptr;
1231
1232                         NEXT_ARG();
1233                         if (!REQ_ARGS(1))
1234                                 return -1;
1235
1236                         test_attr.ctx_size_out = strtoul(*argv, &endptr, 0);
1237                         if (*endptr) {
1238                                 p_err("can't parse %s as output context size",
1239                                       *argv);
1240                                 return -1;
1241                         }
1242                         NEXT_ARG();
1243                 } else if (is_prefix(*argv, "repeat")) {
1244                         char *endptr;
1245
1246                         NEXT_ARG();
1247                         if (!REQ_ARGS(1))
1248                                 return -1;
1249
1250                         repeat = strtoul(*argv, &endptr, 0);
1251                         if (*endptr) {
1252                                 p_err("can't parse %s as repeat number",
1253                                       *argv);
1254                                 return -1;
1255                         }
1256                         NEXT_ARG();
1257                 } else {
1258                         p_err("expected no more arguments, 'data_in', 'data_out', 'data_size_out', 'ctx_in', 'ctx_out', 'ctx_size_out' or 'repeat', got: '%s'?",
1259                               *argv);
1260                         return -1;
1261                 }
1262         }
1263
1264         err = get_run_data(data_fname_in, &data_in, &test_attr.data_size_in);
1265         if (err)
1266                 return -1;
1267
1268         if (data_in) {
1269                 if (!test_attr.data_size_out)
1270                         test_attr.data_size_out = default_size;
1271                 err = alloc_run_data(&data_out, test_attr.data_size_out);
1272                 if (err)
1273                         goto free_data_in;
1274         }
1275
1276         err = get_run_data(ctx_fname_in, &ctx_in, &test_attr.ctx_size_in);
1277         if (err)
1278                 goto free_data_out;
1279
1280         if (ctx_in) {
1281                 if (!test_attr.ctx_size_out)
1282                         test_attr.ctx_size_out = default_size;
1283                 err = alloc_run_data(&ctx_out, test_attr.ctx_size_out);
1284                 if (err)
1285                         goto free_ctx_in;
1286         }
1287
1288         test_attr.prog_fd       = fd;
1289         test_attr.repeat        = repeat;
1290         test_attr.data_in       = data_in;
1291         test_attr.data_out      = data_out;
1292         test_attr.ctx_in        = ctx_in;
1293         test_attr.ctx_out       = ctx_out;
1294
1295         err = bpf_prog_test_run_xattr(&test_attr);
1296         if (err) {
1297                 p_err("failed to run program: %s", strerror(errno));
1298                 goto free_ctx_out;
1299         }
1300
1301         err = 0;
1302
1303         if (json_output)
1304                 jsonw_start_object(json_wtr);   /* root */
1305
1306         /* Do not exit on errors occurring when printing output data/context,
1307          * we still want to print return value and duration for program run.
1308          */
1309         if (test_attr.data_size_out)
1310                 err += print_run_output(test_attr.data_out,
1311                                         test_attr.data_size_out,
1312                                         data_fname_out, "data_out");
1313         if (test_attr.ctx_size_out)
1314                 err += print_run_output(test_attr.ctx_out,
1315                                         test_attr.ctx_size_out,
1316                                         ctx_fname_out, "ctx_out");
1317
1318         if (json_output) {
1319                 jsonw_uint_field(json_wtr, "retval", test_attr.retval);
1320                 jsonw_uint_field(json_wtr, "duration", test_attr.duration);
1321                 jsonw_end_object(json_wtr);     /* root */
1322         } else {
1323                 fprintf(stdout, "Return value: %u, duration%s: %uns\n",
1324                         test_attr.retval,
1325                         repeat > 1 ? " (average)" : "", test_attr.duration);
1326         }
1327
1328 free_ctx_out:
1329         free(ctx_out);
1330 free_ctx_in:
1331         free(ctx_in);
1332 free_data_out:
1333         free(data_out);
1334 free_data_in:
1335         free(data_in);
1336
1337         return err;
1338 }
1339
1340 static int
1341 get_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type,
1342                       enum bpf_attach_type *expected_attach_type)
1343 {
1344         libbpf_print_fn_t print_backup;
1345         int ret;
1346
1347         ret = libbpf_prog_type_by_name(name, prog_type, expected_attach_type);
1348         if (!ret)
1349                 return ret;
1350
1351         /* libbpf_prog_type_by_name() failed, let's re-run with debug level */
1352         print_backup = libbpf_set_print(print_all_levels);
1353         ret = libbpf_prog_type_by_name(name, prog_type, expected_attach_type);
1354         libbpf_set_print(print_backup);
1355
1356         return ret;
1357 }
1358
1359 static int load_with_options(int argc, char **argv, bool first_prog_only)
1360 {
1361         enum bpf_prog_type common_prog_type = BPF_PROG_TYPE_UNSPEC;
1362         DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts,
1363                 .relaxed_maps = relaxed_maps,
1364         );
1365         struct bpf_object_load_attr load_attr = { 0 };
1366         enum bpf_attach_type expected_attach_type;
1367         struct map_replace *map_replace = NULL;
1368         struct bpf_program *prog = NULL, *pos;
1369         unsigned int old_map_fds = 0;
1370         const char *pinmaps = NULL;
1371         struct bpf_object *obj;
1372         struct bpf_map *map;
1373         const char *pinfile;
1374         unsigned int i, j;
1375         __u32 ifindex = 0;
1376         const char *file;
1377         int idx, err;
1378
1379
1380         if (!REQ_ARGS(2))
1381                 return -1;
1382         file = GET_ARG();
1383         pinfile = GET_ARG();
1384
1385         while (argc) {
1386                 if (is_prefix(*argv, "type")) {
1387                         char *type;
1388
1389                         NEXT_ARG();
1390
1391                         if (common_prog_type != BPF_PROG_TYPE_UNSPEC) {
1392                                 p_err("program type already specified");
1393                                 goto err_free_reuse_maps;
1394                         }
1395                         if (!REQ_ARGS(1))
1396                                 goto err_free_reuse_maps;
1397
1398                         /* Put a '/' at the end of type to appease libbpf */
1399                         type = malloc(strlen(*argv) + 2);
1400                         if (!type) {
1401                                 p_err("mem alloc failed");
1402                                 goto err_free_reuse_maps;
1403                         }
1404                         *type = 0;
1405                         strcat(type, *argv);
1406                         strcat(type, "/");
1407
1408                         err = get_prog_type_by_name(type, &common_prog_type,
1409                                                     &expected_attach_type);
1410                         free(type);
1411                         if (err < 0)
1412                                 goto err_free_reuse_maps;
1413
1414                         NEXT_ARG();
1415                 } else if (is_prefix(*argv, "map")) {
1416                         void *new_map_replace;
1417                         char *endptr, *name;
1418                         int fd;
1419
1420                         NEXT_ARG();
1421
1422                         if (!REQ_ARGS(4))
1423                                 goto err_free_reuse_maps;
1424
1425                         if (is_prefix(*argv, "idx")) {
1426                                 NEXT_ARG();
1427
1428                                 idx = strtoul(*argv, &endptr, 0);
1429                                 if (*endptr) {
1430                                         p_err("can't parse %s as IDX", *argv);
1431                                         goto err_free_reuse_maps;
1432                                 }
1433                                 name = NULL;
1434                         } else if (is_prefix(*argv, "name")) {
1435                                 NEXT_ARG();
1436
1437                                 name = *argv;
1438                                 idx = -1;
1439                         } else {
1440                                 p_err("expected 'idx' or 'name', got: '%s'?",
1441                                       *argv);
1442                                 goto err_free_reuse_maps;
1443                         }
1444                         NEXT_ARG();
1445
1446                         fd = map_parse_fd(&argc, &argv);
1447                         if (fd < 0)
1448                                 goto err_free_reuse_maps;
1449
1450                         new_map_replace = reallocarray(map_replace,
1451                                                        old_map_fds + 1,
1452                                                        sizeof(*map_replace));
1453                         if (!new_map_replace) {
1454                                 p_err("mem alloc failed");
1455                                 goto err_free_reuse_maps;
1456                         }
1457                         map_replace = new_map_replace;
1458
1459                         map_replace[old_map_fds].idx = idx;
1460                         map_replace[old_map_fds].name = name;
1461                         map_replace[old_map_fds].fd = fd;
1462                         old_map_fds++;
1463                 } else if (is_prefix(*argv, "dev")) {
1464                         NEXT_ARG();
1465
1466                         if (ifindex) {
1467                                 p_err("offload device already specified");
1468                                 goto err_free_reuse_maps;
1469                         }
1470                         if (!REQ_ARGS(1))
1471                                 goto err_free_reuse_maps;
1472
1473                         ifindex = if_nametoindex(*argv);
1474                         if (!ifindex) {
1475                                 p_err("unrecognized netdevice '%s': %s",
1476                                       *argv, strerror(errno));
1477                                 goto err_free_reuse_maps;
1478                         }
1479                         NEXT_ARG();
1480                 } else if (is_prefix(*argv, "pinmaps")) {
1481                         NEXT_ARG();
1482
1483                         if (!REQ_ARGS(1))
1484                                 goto err_free_reuse_maps;
1485
1486                         pinmaps = GET_ARG();
1487                 } else {
1488                         p_err("expected no more arguments, 'type', 'map' or 'dev', got: '%s'?",
1489                               *argv);
1490                         goto err_free_reuse_maps;
1491                 }
1492         }
1493
1494         set_max_rlimit();
1495
1496         obj = bpf_object__open_file(file, &open_opts);
1497         if (IS_ERR_OR_NULL(obj)) {
1498                 p_err("failed to open object file");
1499                 goto err_free_reuse_maps;
1500         }
1501
1502         bpf_object__for_each_program(pos, obj) {
1503                 enum bpf_prog_type prog_type = common_prog_type;
1504
1505                 if (prog_type == BPF_PROG_TYPE_UNSPEC) {
1506                         const char *sec_name = bpf_program__section_name(pos);
1507
1508                         err = get_prog_type_by_name(sec_name, &prog_type,
1509                                                     &expected_attach_type);
1510                         if (err < 0)
1511                                 goto err_close_obj;
1512                 }
1513
1514                 bpf_program__set_ifindex(pos, ifindex);
1515                 bpf_program__set_type(pos, prog_type);
1516                 bpf_program__set_expected_attach_type(pos, expected_attach_type);
1517         }
1518
1519         qsort(map_replace, old_map_fds, sizeof(*map_replace),
1520               map_replace_compar);
1521
1522         /* After the sort maps by name will be first on the list, because they
1523          * have idx == -1.  Resolve them.
1524          */
1525         j = 0;
1526         while (j < old_map_fds && map_replace[j].name) {
1527                 i = 0;
1528                 bpf_object__for_each_map(map, obj) {
1529                         if (!strcmp(bpf_map__name(map), map_replace[j].name)) {
1530                                 map_replace[j].idx = i;
1531                                 break;
1532                         }
1533                         i++;
1534                 }
1535                 if (map_replace[j].idx == -1) {
1536                         p_err("unable to find map '%s'", map_replace[j].name);
1537                         goto err_close_obj;
1538                 }
1539                 j++;
1540         }
1541         /* Resort if any names were resolved */
1542         if (j)
1543                 qsort(map_replace, old_map_fds, sizeof(*map_replace),
1544                       map_replace_compar);
1545
1546         /* Set ifindex and name reuse */
1547         j = 0;
1548         idx = 0;
1549         bpf_object__for_each_map(map, obj) {
1550                 if (!bpf_map__is_offload_neutral(map))
1551                         bpf_map__set_ifindex(map, ifindex);
1552
1553                 if (j < old_map_fds && idx == map_replace[j].idx) {
1554                         err = bpf_map__reuse_fd(map, map_replace[j++].fd);
1555                         if (err) {
1556                                 p_err("unable to set up map reuse: %d", err);
1557                                 goto err_close_obj;
1558                         }
1559
1560                         /* Next reuse wants to apply to the same map */
1561                         if (j < old_map_fds && map_replace[j].idx == idx) {
1562                                 p_err("replacement for map idx %d specified more than once",
1563                                       idx);
1564                                 goto err_close_obj;
1565                         }
1566                 }
1567
1568                 idx++;
1569         }
1570         if (j < old_map_fds) {
1571                 p_err("map idx '%d' not used", map_replace[j].idx);
1572                 goto err_close_obj;
1573         }
1574
1575         load_attr.obj = obj;
1576         if (verifier_logs)
1577                 /* log_level1 + log_level2 + stats, but not stable UAPI */
1578                 load_attr.log_level = 1 + 2 + 4;
1579
1580         err = bpf_object__load_xattr(&load_attr);
1581         if (err) {
1582                 p_err("failed to load object file");
1583                 goto err_close_obj;
1584         }
1585
1586         err = mount_bpffs_for_pin(pinfile);
1587         if (err)
1588                 goto err_close_obj;
1589
1590         if (first_prog_only) {
1591                 prog = bpf_program__next(NULL, obj);
1592                 if (!prog) {
1593                         p_err("object file doesn't contain any bpf program");
1594                         goto err_close_obj;
1595                 }
1596
1597                 err = bpf_obj_pin(bpf_program__fd(prog), pinfile);
1598                 if (err) {
1599                         p_err("failed to pin program %s",
1600                               bpf_program__section_name(prog));
1601                         goto err_close_obj;
1602                 }
1603         } else {
1604                 err = bpf_object__pin_programs(obj, pinfile);
1605                 if (err) {
1606                         p_err("failed to pin all programs");
1607                         goto err_close_obj;
1608                 }
1609         }
1610
1611         if (pinmaps) {
1612                 err = bpf_object__pin_maps(obj, pinmaps);
1613                 if (err) {
1614                         p_err("failed to pin all maps");
1615                         goto err_unpin;
1616                 }
1617         }
1618
1619         if (json_output)
1620                 jsonw_null(json_wtr);
1621
1622         bpf_object__close(obj);
1623         for (i = 0; i < old_map_fds; i++)
1624                 close(map_replace[i].fd);
1625         free(map_replace);
1626
1627         return 0;
1628
1629 err_unpin:
1630         if (first_prog_only)
1631                 unlink(pinfile);
1632         else
1633                 bpf_object__unpin_programs(obj, pinfile);
1634 err_close_obj:
1635         bpf_object__close(obj);
1636 err_free_reuse_maps:
1637         for (i = 0; i < old_map_fds; i++)
1638                 close(map_replace[i].fd);
1639         free(map_replace);
1640         return -1;
1641 }
1642
1643 static int do_load(int argc, char **argv)
1644 {
1645         return load_with_options(argc, argv, true);
1646 }
1647
1648 static int do_loadall(int argc, char **argv)
1649 {
1650         return load_with_options(argc, argv, false);
1651 }
1652
1653 #ifdef BPFTOOL_WITHOUT_SKELETONS
1654
1655 static int do_profile(int argc, char **argv)
1656 {
1657         p_err("bpftool prog profile command is not supported. Please build bpftool with clang >= 10.0.0");
1658         return 0;
1659 }
1660
1661 #else /* BPFTOOL_WITHOUT_SKELETONS */
1662
1663 #include "profiler.skel.h"
1664
1665 struct profile_metric {
1666         const char *name;
1667         struct bpf_perf_event_value val;
1668         struct perf_event_attr attr;
1669         bool selected;
1670
1671         /* calculate ratios like instructions per cycle */
1672         const int ratio_metric; /* 0 for N/A, 1 for index 0 (cycles) */
1673         const char *ratio_desc;
1674         const float ratio_mul;
1675 } metrics[] = {
1676         {
1677                 .name = "cycles",
1678                 .attr = {
1679                         .type = PERF_TYPE_HARDWARE,
1680                         .config = PERF_COUNT_HW_CPU_CYCLES,
1681                         .exclude_user = 1,
1682                 },
1683         },
1684         {
1685                 .name = "instructions",
1686                 .attr = {
1687                         .type = PERF_TYPE_HARDWARE,
1688                         .config = PERF_COUNT_HW_INSTRUCTIONS,
1689                         .exclude_user = 1,
1690                 },
1691                 .ratio_metric = 1,
1692                 .ratio_desc = "insns per cycle",
1693                 .ratio_mul = 1.0,
1694         },
1695         {
1696                 .name = "l1d_loads",
1697                 .attr = {
1698                         .type = PERF_TYPE_HW_CACHE,
1699                         .config =
1700                                 PERF_COUNT_HW_CACHE_L1D |
1701                                 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1702                                 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16),
1703                         .exclude_user = 1,
1704                 },
1705         },
1706         {
1707                 .name = "llc_misses",
1708                 .attr = {
1709                         .type = PERF_TYPE_HW_CACHE,
1710                         .config =
1711                                 PERF_COUNT_HW_CACHE_LL |
1712                                 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1713                                 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
1714                         .exclude_user = 1
1715                 },
1716                 .ratio_metric = 2,
1717                 .ratio_desc = "LLC misses per million insns",
1718                 .ratio_mul = 1e6,
1719         },
1720 };
1721
1722 static __u64 profile_total_count;
1723
1724 #define MAX_NUM_PROFILE_METRICS 4
1725
1726 static int profile_parse_metrics(int argc, char **argv)
1727 {
1728         unsigned int metric_cnt;
1729         int selected_cnt = 0;
1730         unsigned int i;
1731
1732         metric_cnt = sizeof(metrics) / sizeof(struct profile_metric);
1733
1734         while (argc > 0) {
1735                 for (i = 0; i < metric_cnt; i++) {
1736                         if (is_prefix(argv[0], metrics[i].name)) {
1737                                 if (!metrics[i].selected)
1738                                         selected_cnt++;
1739                                 metrics[i].selected = true;
1740                                 break;
1741                         }
1742                 }
1743                 if (i == metric_cnt) {
1744                         p_err("unknown metric %s", argv[0]);
1745                         return -1;
1746                 }
1747                 NEXT_ARG();
1748         }
1749         if (selected_cnt > MAX_NUM_PROFILE_METRICS) {
1750                 p_err("too many (%d) metrics, please specify no more than %d metrics at at time",
1751                       selected_cnt, MAX_NUM_PROFILE_METRICS);
1752                 return -1;
1753         }
1754         return selected_cnt;
1755 }
1756
1757 static void profile_read_values(struct profiler_bpf *obj)
1758 {
1759         __u32 m, cpu, num_cpu = obj->rodata->num_cpu;
1760         int reading_map_fd, count_map_fd;
1761         __u64 counts[num_cpu];
1762         __u32 key = 0;
1763         int err;
1764
1765         reading_map_fd = bpf_map__fd(obj->maps.accum_readings);
1766         count_map_fd = bpf_map__fd(obj->maps.counts);
1767         if (reading_map_fd < 0 || count_map_fd < 0) {
1768                 p_err("failed to get fd for map");
1769                 return;
1770         }
1771
1772         err = bpf_map_lookup_elem(count_map_fd, &key, counts);
1773         if (err) {
1774                 p_err("failed to read count_map: %s", strerror(errno));
1775                 return;
1776         }
1777
1778         profile_total_count = 0;
1779         for (cpu = 0; cpu < num_cpu; cpu++)
1780                 profile_total_count += counts[cpu];
1781
1782         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1783                 struct bpf_perf_event_value values[num_cpu];
1784
1785                 if (!metrics[m].selected)
1786                         continue;
1787
1788                 err = bpf_map_lookup_elem(reading_map_fd, &key, values);
1789                 if (err) {
1790                         p_err("failed to read reading_map: %s",
1791                               strerror(errno));
1792                         return;
1793                 }
1794                 for (cpu = 0; cpu < num_cpu; cpu++) {
1795                         metrics[m].val.counter += values[cpu].counter;
1796                         metrics[m].val.enabled += values[cpu].enabled;
1797                         metrics[m].val.running += values[cpu].running;
1798                 }
1799                 key++;
1800         }
1801 }
1802
1803 static void profile_print_readings_json(void)
1804 {
1805         __u32 m;
1806
1807         jsonw_start_array(json_wtr);
1808         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1809                 if (!metrics[m].selected)
1810                         continue;
1811                 jsonw_start_object(json_wtr);
1812                 jsonw_string_field(json_wtr, "metric", metrics[m].name);
1813                 jsonw_lluint_field(json_wtr, "run_cnt", profile_total_count);
1814                 jsonw_lluint_field(json_wtr, "value", metrics[m].val.counter);
1815                 jsonw_lluint_field(json_wtr, "enabled", metrics[m].val.enabled);
1816                 jsonw_lluint_field(json_wtr, "running", metrics[m].val.running);
1817
1818                 jsonw_end_object(json_wtr);
1819         }
1820         jsonw_end_array(json_wtr);
1821 }
1822
1823 static void profile_print_readings_plain(void)
1824 {
1825         __u32 m;
1826
1827         printf("\n%18llu %-20s\n", profile_total_count, "run_cnt");
1828         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1829                 struct bpf_perf_event_value *val = &metrics[m].val;
1830                 int r;
1831
1832                 if (!metrics[m].selected)
1833                         continue;
1834                 printf("%18llu %-20s", val->counter, metrics[m].name);
1835
1836                 r = metrics[m].ratio_metric - 1;
1837                 if (r >= 0 && metrics[r].selected &&
1838                     metrics[r].val.counter > 0) {
1839                         printf("# %8.2f %-30s",
1840                                val->counter * metrics[m].ratio_mul /
1841                                metrics[r].val.counter,
1842                                metrics[m].ratio_desc);
1843                 } else {
1844                         printf("%-41s", "");
1845                 }
1846
1847                 if (val->enabled > val->running)
1848                         printf("(%4.2f%%)",
1849                                val->running * 100.0 / val->enabled);
1850                 printf("\n");
1851         }
1852 }
1853
1854 static void profile_print_readings(void)
1855 {
1856         if (json_output)
1857                 profile_print_readings_json();
1858         else
1859                 profile_print_readings_plain();
1860 }
1861
1862 static char *profile_target_name(int tgt_fd)
1863 {
1864         struct bpf_prog_info_linear *info_linear;
1865         struct bpf_func_info *func_info;
1866         const struct btf_type *t;
1867         char *name = NULL;
1868         struct btf *btf;
1869
1870         info_linear = bpf_program__get_prog_info_linear(
1871                 tgt_fd, 1UL << BPF_PROG_INFO_FUNC_INFO);
1872         if (IS_ERR_OR_NULL(info_linear)) {
1873                 p_err("failed to get info_linear for prog FD %d", tgt_fd);
1874                 return NULL;
1875         }
1876
1877         if (info_linear->info.btf_id == 0 ||
1878             btf__get_from_id(info_linear->info.btf_id, &btf)) {
1879                 p_err("prog FD %d doesn't have valid btf", tgt_fd);
1880                 goto out;
1881         }
1882
1883         func_info = u64_to_ptr(info_linear->info.func_info);
1884         t = btf__type_by_id(btf, func_info[0].type_id);
1885         if (!t) {
1886                 p_err("btf %d doesn't have type %d",
1887                       info_linear->info.btf_id, func_info[0].type_id);
1888                 goto out;
1889         }
1890         name = strdup(btf__name_by_offset(btf, t->name_off));
1891 out:
1892         free(info_linear);
1893         return name;
1894 }
1895
1896 static struct profiler_bpf *profile_obj;
1897 static int profile_tgt_fd = -1;
1898 static char *profile_tgt_name;
1899 static int *profile_perf_events;
1900 static int profile_perf_event_cnt;
1901
1902 static void profile_close_perf_events(struct profiler_bpf *obj)
1903 {
1904         int i;
1905
1906         for (i = profile_perf_event_cnt - 1; i >= 0; i--)
1907                 close(profile_perf_events[i]);
1908
1909         free(profile_perf_events);
1910         profile_perf_event_cnt = 0;
1911 }
1912
1913 static int profile_open_perf_events(struct profiler_bpf *obj)
1914 {
1915         unsigned int cpu, m;
1916         int map_fd, pmu_fd;
1917
1918         profile_perf_events = calloc(
1919                 sizeof(int), obj->rodata->num_cpu * obj->rodata->num_metric);
1920         if (!profile_perf_events) {
1921                 p_err("failed to allocate memory for perf_event array: %s",
1922                       strerror(errno));
1923                 return -1;
1924         }
1925         map_fd = bpf_map__fd(obj->maps.events);
1926         if (map_fd < 0) {
1927                 p_err("failed to get fd for events map");
1928                 return -1;
1929         }
1930
1931         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1932                 if (!metrics[m].selected)
1933                         continue;
1934                 for (cpu = 0; cpu < obj->rodata->num_cpu; cpu++) {
1935                         pmu_fd = syscall(__NR_perf_event_open, &metrics[m].attr,
1936                                          -1/*pid*/, cpu, -1/*group_fd*/, 0);
1937                         if (pmu_fd < 0 ||
1938                             bpf_map_update_elem(map_fd, &profile_perf_event_cnt,
1939                                                 &pmu_fd, BPF_ANY) ||
1940                             ioctl(pmu_fd, PERF_EVENT_IOC_ENABLE, 0)) {
1941                                 p_err("failed to create event %s on cpu %d",
1942                                       metrics[m].name, cpu);
1943                                 return -1;
1944                         }
1945                         profile_perf_events[profile_perf_event_cnt++] = pmu_fd;
1946                 }
1947         }
1948         return 0;
1949 }
1950
1951 static void profile_print_and_cleanup(void)
1952 {
1953         profile_close_perf_events(profile_obj);
1954         profile_read_values(profile_obj);
1955         profile_print_readings();
1956         profiler_bpf__destroy(profile_obj);
1957
1958         close(profile_tgt_fd);
1959         free(profile_tgt_name);
1960 }
1961
1962 static void int_exit(int signo)
1963 {
1964         profile_print_and_cleanup();
1965         exit(0);
1966 }
1967
1968 static int do_profile(int argc, char **argv)
1969 {
1970         int num_metric, num_cpu, err = -1;
1971         struct bpf_program *prog;
1972         unsigned long duration;
1973         char *endptr;
1974
1975         /* we at least need two args for the prog and one metric */
1976         if (!REQ_ARGS(3))
1977                 return -EINVAL;
1978
1979         /* parse target fd */
1980         profile_tgt_fd = prog_parse_fd(&argc, &argv);
1981         if (profile_tgt_fd < 0) {
1982                 p_err("failed to parse fd");
1983                 return -1;
1984         }
1985
1986         /* parse profiling optional duration */
1987         if (argc > 2 && is_prefix(argv[0], "duration")) {
1988                 NEXT_ARG();
1989                 duration = strtoul(*argv, &endptr, 0);
1990                 if (*endptr)
1991                         usage();
1992                 NEXT_ARG();
1993         } else {
1994                 duration = UINT_MAX;
1995         }
1996
1997         num_metric = profile_parse_metrics(argc, argv);
1998         if (num_metric <= 0)
1999                 goto out;
2000
2001         num_cpu = libbpf_num_possible_cpus();
2002         if (num_cpu <= 0) {
2003                 p_err("failed to identify number of CPUs");
2004                 goto out;
2005         }
2006
2007         profile_obj = profiler_bpf__open();
2008         if (!profile_obj) {
2009                 p_err("failed to open and/or load BPF object");
2010                 goto out;
2011         }
2012
2013         profile_obj->rodata->num_cpu = num_cpu;
2014         profile_obj->rodata->num_metric = num_metric;
2015
2016         /* adjust map sizes */
2017         bpf_map__resize(profile_obj->maps.events, num_metric * num_cpu);
2018         bpf_map__resize(profile_obj->maps.fentry_readings, num_metric);
2019         bpf_map__resize(profile_obj->maps.accum_readings, num_metric);
2020         bpf_map__resize(profile_obj->maps.counts, 1);
2021
2022         /* change target name */
2023         profile_tgt_name = profile_target_name(profile_tgt_fd);
2024         if (!profile_tgt_name)
2025                 goto out;
2026
2027         bpf_object__for_each_program(prog, profile_obj->obj) {
2028                 err = bpf_program__set_attach_target(prog, profile_tgt_fd,
2029                                                      profile_tgt_name);
2030                 if (err) {
2031                         p_err("failed to set attach target\n");
2032                         goto out;
2033                 }
2034         }
2035
2036         set_max_rlimit();
2037         err = profiler_bpf__load(profile_obj);
2038         if (err) {
2039                 p_err("failed to load profile_obj");
2040                 goto out;
2041         }
2042
2043         err = profile_open_perf_events(profile_obj);
2044         if (err)
2045                 goto out;
2046
2047         err = profiler_bpf__attach(profile_obj);
2048         if (err) {
2049                 p_err("failed to attach profile_obj");
2050                 goto out;
2051         }
2052         signal(SIGINT, int_exit);
2053
2054         sleep(duration);
2055         profile_print_and_cleanup();
2056         return 0;
2057
2058 out:
2059         profile_close_perf_events(profile_obj);
2060         if (profile_obj)
2061                 profiler_bpf__destroy(profile_obj);
2062         close(profile_tgt_fd);
2063         free(profile_tgt_name);
2064         return err;
2065 }
2066
2067 #endif /* BPFTOOL_WITHOUT_SKELETONS */
2068
2069 static int do_help(int argc, char **argv)
2070 {
2071         if (json_output) {
2072                 jsonw_null(json_wtr);
2073                 return 0;
2074         }
2075
2076         fprintf(stderr,
2077                 "Usage: %1$s %2$s { show | list } [PROG]\n"
2078                 "       %1$s %2$s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
2079                 "       %1$s %2$s dump jited  PROG [{ file FILE | opcodes | linum }]\n"
2080                 "       %1$s %2$s pin   PROG FILE\n"
2081                 "       %1$s %2$s { load | loadall } OBJ  PATH \\\n"
2082                 "                         [type TYPE] [dev NAME] \\\n"
2083                 "                         [map { idx IDX | name NAME } MAP]\\\n"
2084                 "                         [pinmaps MAP_DIR]\n"
2085                 "       %1$s %2$s attach PROG ATTACH_TYPE [MAP]\n"
2086                 "       %1$s %2$s detach PROG ATTACH_TYPE [MAP]\n"
2087                 "       %1$s %2$s run PROG \\\n"
2088                 "                         data_in FILE \\\n"
2089                 "                         [data_out FILE [data_size_out L]] \\\n"
2090                 "                         [ctx_in FILE [ctx_out FILE [ctx_size_out M]]] \\\n"
2091                 "                         [repeat N]\n"
2092                 "       %1$s %2$s profile PROG [duration DURATION] METRICs\n"
2093                 "       %1$s %2$s tracelog\n"
2094                 "       %1$s %2$s help\n"
2095                 "\n"
2096                 "       " HELP_SPEC_MAP "\n"
2097                 "       " HELP_SPEC_PROGRAM "\n"
2098                 "       TYPE := { socket | kprobe | kretprobe | classifier | action |\n"
2099                 "                 tracepoint | raw_tracepoint | xdp | perf_event | cgroup/skb |\n"
2100                 "                 cgroup/sock | cgroup/dev | lwt_in | lwt_out | lwt_xmit |\n"
2101                 "                 lwt_seg6local | sockops | sk_skb | sk_msg | lirc_mode2 |\n"
2102                 "                 sk_reuseport | flow_dissector | cgroup/sysctl |\n"
2103                 "                 cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n"
2104                 "                 cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n"
2105                 "                 cgroup/getpeername4 | cgroup/getpeername6 |\n"
2106                 "                 cgroup/getsockname4 | cgroup/getsockname6 | cgroup/sendmsg4 |\n"
2107                 "                 cgroup/sendmsg6 | cgroup/recvmsg4 | cgroup/recvmsg6 |\n"
2108                 "                 cgroup/getsockopt | cgroup/setsockopt |\n"
2109                 "                 struct_ops | fentry | fexit | freplace | sk_lookup }\n"
2110                 "       ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n"
2111                 "                        flow_dissector }\n"
2112                 "       METRIC := { cycles | instructions | l1d_loads | llc_misses }\n"
2113                 "       " HELP_SPEC_OPTIONS "\n"
2114                 "",
2115                 bin_name, argv[-2]);
2116
2117         return 0;
2118 }
2119
2120 static const struct cmd cmds[] = {
2121         { "show",       do_show },
2122         { "list",       do_show },
2123         { "help",       do_help },
2124         { "dump",       do_dump },
2125         { "pin",        do_pin },
2126         { "load",       do_load },
2127         { "loadall",    do_loadall },
2128         { "attach",     do_attach },
2129         { "detach",     do_detach },
2130         { "tracelog",   do_tracelog },
2131         { "run",        do_run },
2132         { "profile",    do_profile },
2133         { 0 }
2134 };
2135
2136 int do_prog(int argc, char **argv)
2137 {
2138         return cmd_select(cmds, argc, argv, do_help);
2139 }