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         if (info->recursion_misses)
 372                 jsonw_uint_field(json_wtr, "recursion_misses", info->recursion_misses);
 373 }
 374
 375 static void print_prog_json(struct bpf_prog_info *info, int fd)
 376 {
 377         char *memlock;
 378
 379         jsonw_start_object(json_wtr);
 380         print_prog_header_json(info);
 381         print_dev_json(info->ifindex, info->netns_dev, info->netns_ino);
 382
 383         if (info->load_time) {
 384                 char buf[32];
 385
 386                 print_boot_time(info->load_time, buf, sizeof(buf));
 387
 388                 /* Piggy back on load_time, since 0 uid is a valid one */
 389                 jsonw_name(json_wtr, "loaded_at");
 390                 jsonw_printf(json_wtr, "%s", buf);
 391                 jsonw_uint_field(json_wtr, "uid", info->created_by_uid);
 392         }
 393
 394         jsonw_uint_field(json_wtr, "bytes_xlated", info->xlated_prog_len);
 395
 396         if (info->jited_prog_len) {
 397                 jsonw_bool_field(json_wtr, "jited", true);
 398                 jsonw_uint_field(json_wtr, "bytes_jited", info->jited_prog_len);
 399         } else {
 400                 jsonw_bool_field(json_wtr, "jited", false);
 401         }
 402
 403         memlock = get_fdinfo(fd, "memlock");
 404         if (memlock)
 405                 jsonw_int_field(json_wtr, "bytes_memlock", atoi(memlock));
 406         free(memlock);
 407
 408         if (info->nr_map_ids)
 409                 show_prog_maps(fd, info->nr_map_ids);
 410
 411         if (info->btf_id)
 412                 jsonw_int_field(json_wtr, "btf_id", info->btf_id);
 413
 414         if (!hash_empty(prog_table.table)) {
 415                 struct pinned_obj *obj;
 416
 417                 jsonw_name(json_wtr, "pinned");
 418                 jsonw_start_array(json_wtr);
 419                 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
 420                         if (obj->id == info->id)
 421                                 jsonw_string(json_wtr, obj->path);
 422                 }
 423                 jsonw_end_array(json_wtr);
 424         }
 425
 426         emit_obj_refs_json(&refs_table, info->id, json_wtr);
 427
 428         show_prog_metadata(fd, info->nr_map_ids);
 429
 430         jsonw_end_object(json_wtr);
 431 }
 432
 433 static void print_prog_header_plain(struct bpf_prog_info *info)
 434 {
 435         printf("%u: ", info->id);
 436         if (info->type < ARRAY_SIZE(prog_type_name))
 437                 printf("%s  ", prog_type_name[info->type]);
 438         else
 439                 printf("type %u  ", info->type);
 440
 441         if (*info->name)
 442                 printf("name %s  ", info->name);
 443
 444         printf("tag ");
 445         fprint_hex(stdout, info->tag, BPF_TAG_SIZE, "");
 446         print_dev_plain(info->ifindex, info->netns_dev, info->netns_ino);
 447         printf("%s", info->gpl_compatible ? "  gpl" : "");
 448         if (info->run_time_ns)
 449                 printf(" run_time_ns %lld run_cnt %lld",
 450                        info->run_time_ns, info->run_cnt);
 451         if (info->recursion_misses)
 452                 printf(" recursion_misses %lld", info->recursion_misses);
 453         printf("\n");
 454 }
 455
 456 static void print_prog_plain(struct bpf_prog_info *info, int fd)
 457 {
 458         char *memlock;
 459
 460         print_prog_header_plain(info);
 461
 462         if (info->load_time) {
 463                 char buf[32];
 464
 465                 print_boot_time(info->load_time, buf, sizeof(buf));
 466
 467                 /* Piggy back on load_time, since 0 uid is a valid one */
 468                 printf("\tloaded_at %s  uid %u\n", buf, info->created_by_uid);
 469         }
 470
 471         printf("\txlated %uB", info->xlated_prog_len);
 472
 473         if (info->jited_prog_len)
 474                 printf("  jited %uB", info->jited_prog_len);
 475         else
 476                 printf("  not jited");
 477
 478         memlock = get_fdinfo(fd, "memlock");
 479         if (memlock)
 480                 printf("  memlock %sB", memlock);
 481         free(memlock);
 482
 483         if (info->nr_map_ids)
 484                 show_prog_maps(fd, info->nr_map_ids);
 485
 486         if (!hash_empty(prog_table.table)) {
 487                 struct pinned_obj *obj;
 488
 489                 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
 490                         if (obj->id == info->id)
 491                                 printf("\n\tpinned %s", obj->path);
 492                 }
 493         }
 494
 495         if (info->btf_id)
 496                 printf("\n\tbtf_id %d", info->btf_id);
 497
 498         emit_obj_refs_plain(&refs_table, info->id, "\n\tpids ");
 499
 500         printf("\n");
 501
 502         show_prog_metadata(fd, info->nr_map_ids);
 503 }
 504
 505 static int show_prog(int fd)
 506 {
 507         struct bpf_prog_info info = {};
 508         __u32 len = sizeof(info);
 509         int err;
 510
 511         err = bpf_obj_get_info_by_fd(fd, &info, &len);
 512         if (err) {
 513                 p_err("can't get prog info: %s", strerror(errno));
 514                 return -1;
 515         }
 516
 517         if (json_output)
 518                 print_prog_json(&info, fd);
 519         else
 520                 print_prog_plain(&info, fd);
 521
 522         return 0;
 523 }
 524
 525 static int do_show_subset(int argc, char **argv)
 526 {
 527         int *fds = NULL;
 528         int nb_fds, i;
 529         int err = -1;
 530
 531         fds = malloc(sizeof(int));
 532         if (!fds) {
 533                 p_err("mem alloc failed");
 534                 return -1;
 535         }
 536         nb_fds = prog_parse_fds(&argc, &argv, &fds);
 537         if (nb_fds < 1)
 538                 goto exit_free;
 539
 540         if (json_output && nb_fds > 1)
 541                 jsonw_start_array(json_wtr);    /* root array */
 542         for (i = 0; i < nb_fds; i++) {
 543                 err = show_prog(fds[i]);
 544                 if (err) {
 545                         for (; i < nb_fds; i++)
 546                                 close(fds[i]);
 547                         break;
 548                 }
 549                 close(fds[i]);
 550         }
 551         if (json_output && nb_fds > 1)
 552                 jsonw_end_array(json_wtr);      /* root array */
 553
 554 exit_free:
 555         free(fds);
 556         return err;
 557 }
 558
 559 static int do_show(int argc, char **argv)
 560 {
 561         __u32 id = 0;
 562         int err;
 563         int fd;
 564
 565         if (show_pinned)
 566                 build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
 567         build_obj_refs_table(&refs_table, BPF_OBJ_PROG);
 568
 569         if (argc == 2)
 570                 return do_show_subset(argc, argv);
 571
 572         if (argc)
 573                 return BAD_ARG();
 574
 575         if (json_output)
 576                 jsonw_start_array(json_wtr);
 577         while (true) {
 578                 err = bpf_prog_get_next_id(id, &id);
 579                 if (err) {
 580                         if (errno == ENOENT) {
 581                                 err = 0;
 582                                 break;
 583                         }
 584                         p_err("can't get next program: %s%s", strerror(errno),
 585                               errno == EINVAL ? " -- kernel too old?" : "");
 586                         err = -1;
 587                         break;
 588                 }
 589
 590                 fd = bpf_prog_get_fd_by_id(id);
 591                 if (fd < 0) {
 592                         if (errno == ENOENT)
 593                                 continue;
 594                         p_err("can't get prog by id (%u): %s",
 595                               id, strerror(errno));
 596                         err = -1;
 597                         break;
 598                 }
 599
 600                 err = show_prog(fd);
 601                 close(fd);
 602                 if (err)
 603                         break;
 604         }
 605
 606         if (json_output)
 607                 jsonw_end_array(json_wtr);
 608
 609         delete_obj_refs_table(&refs_table);
 610
 611         return err;
 612 }
 613
 614 static int
 615 prog_dump(struct bpf_prog_info *info, enum dump_mode mode,
 616           char *filepath, bool opcodes, bool visual, bool linum)
 617 {
 618         struct bpf_prog_linfo *prog_linfo = NULL;
 619         const char *disasm_opt = NULL;
 620         struct dump_data dd = {};
 621         void *func_info = NULL;
 622         struct btf *btf = NULL;
 623         char func_sig[1024];
 624         unsigned char *buf;
 625         __u32 member_len;
 626         ssize_t n;
 627         int fd;
 628
 629         if (mode == DUMP_JITED) {
 630                 if (info->jited_prog_len == 0 || !info->jited_prog_insns) {
 631                         p_info("no instructions returned");
 632                         return -1;
 633                 }
 634                 buf = u64_to_ptr(info->jited_prog_insns);
 635                 member_len = info->jited_prog_len;
 636         } else {        /* DUMP_XLATED */
 637                 if (info->xlated_prog_len == 0 || !info->xlated_prog_insns) {
 638                         p_err("error retrieving insn dump: kernel.kptr_restrict set?");
 639                         return -1;
 640                 }
 641                 buf = u64_to_ptr(info->xlated_prog_insns);
 642                 member_len = info->xlated_prog_len;
 643         }
 644
 645         if (info->btf_id && btf__get_from_id(info->btf_id, &btf)) {
 646                 p_err("failed to get btf");
 647                 return -1;
 648         }
 649
 650         func_info = u64_to_ptr(info->func_info);
 651
 652         if (info->nr_line_info) {
 653                 prog_linfo = bpf_prog_linfo__new(info);
 654                 if (!prog_linfo)
 655                         p_info("error in processing bpf_line_info.  continue without it.");
 656         }
 657
 658         if (filepath) {
 659                 fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
 660                 if (fd < 0) {
 661                         p_err("can't open file %s: %s", filepath,
 662                               strerror(errno));
 663                         return -1;
 664                 }
 665
 666                 n = write(fd, buf, member_len);
 667                 close(fd);
 668                 if (n != (ssize_t)member_len) {
 669                         p_err("error writing output file: %s",
 670                               n < 0 ? strerror(errno) : "short write");
 671                         return -1;
 672                 }
 673
 674                 if (json_output)
 675                         jsonw_null(json_wtr);
 676         } else if (mode == DUMP_JITED) {
 677                 const char *name = NULL;
 678
 679                 if (info->ifindex) {
 680                         name = ifindex_to_bfd_params(info->ifindex,
 681                                                      info->netns_dev,
 682                                                      info->netns_ino,
 683                                                      &disasm_opt);
 684                         if (!name)
 685                                 return -1;
 686                 }
 687
 688                 if (info->nr_jited_func_lens && info->jited_func_lens) {
 689                         struct kernel_sym *sym = NULL;
 690                         struct bpf_func_info *record;
 691                         char sym_name[SYM_MAX_NAME];
 692                         unsigned char *img = buf;
 693                         __u64 *ksyms = NULL;
 694                         __u32 *lens;
 695                         __u32 i;
 696                         if (info->nr_jited_ksyms) {
 697                                 kernel_syms_load(&dd);
 698                                 ksyms = u64_to_ptr(info->jited_ksyms);
 699                         }
 700
 701                         if (json_output)
 702                                 jsonw_start_array(json_wtr);
 703
 704                         lens = u64_to_ptr(info->jited_func_lens);
 705                         for (i = 0; i < info->nr_jited_func_lens; i++) {
 706                                 if (ksyms) {
 707                                         sym = kernel_syms_search(&dd, ksyms[i]);
 708                                         if (sym)
 709                                                 sprintf(sym_name, "%s", sym->name);
 710                                         else
 711                                                 sprintf(sym_name, "0x%016llx", ksyms[i]);
 712                                 } else {
 713                                         strcpy(sym_name, "unknown");
 714                                 }
 715
 716                                 if (func_info) {
 717                                         record = func_info + i * info->func_info_rec_size;
 718                                         btf_dumper_type_only(btf, record->type_id,
 719                                                              func_sig,
 720                                                              sizeof(func_sig));
 721                                 }
 722
 723                                 if (json_output) {
 724                                         jsonw_start_object(json_wtr);
 725                                         if (func_info && func_sig[0] != '\0') {
 726                                                 jsonw_name(json_wtr, "proto");
 727                                                 jsonw_string(json_wtr, func_sig);
 728                                         }
 729                                         jsonw_name(json_wtr, "name");
 730                                         jsonw_string(json_wtr, sym_name);
 731                                         jsonw_name(json_wtr, "insns");
 732                                 } else {
 733                                         if (func_info && func_sig[0] != '\0')
 734                                                 printf("%s:\n", func_sig);
 735                                         printf("%s:\n", sym_name);
 736                                 }
 737
 738                                 disasm_print_insn(img, lens[i], opcodes,
 739                                                   name, disasm_opt, btf,
 740                                                   prog_linfo, ksyms[i], i,
 741                                                   linum);
 742
 743                                 img += lens[i];
 744
 745                                 if (json_output)
 746                                         jsonw_end_object(json_wtr);
 747                                 else
 748                                         printf("\n");
 749                         }
 750
 751                         if (json_output)
 752                                 jsonw_end_array(json_wtr);
 753                 } else {
 754                         disasm_print_insn(buf, member_len, opcodes, name,
 755                                           disasm_opt, btf, NULL, 0, 0, false);
 756                 }
 757         } else if (visual) {
 758                 if (json_output)
 759                         jsonw_null(json_wtr);
 760                 else
 761                         dump_xlated_cfg(buf, member_len);
 762         } else {
 763                 kernel_syms_load(&dd);
 764                 dd.nr_jited_ksyms = info->nr_jited_ksyms;
 765                 dd.jited_ksyms = u64_to_ptr(info->jited_ksyms);
 766                 dd.btf = btf;
 767                 dd.func_info = func_info;
 768                 dd.finfo_rec_size = info->func_info_rec_size;
 769                 dd.prog_linfo = prog_linfo;
 770
 771                 if (json_output)
 772                         dump_xlated_json(&dd, buf, member_len, opcodes,
 773                                          linum);
 774                 else
 775                         dump_xlated_plain(&dd, buf, member_len, opcodes,
 776                                           linum);
 777                 kernel_syms_destroy(&dd);
 778         }
 779
 780         return 0;
 781 }
 782
 783 static int do_dump(int argc, char **argv)
 784 {
 785         struct bpf_prog_info_linear *info_linear;
 786         char *filepath = NULL;
 787         bool opcodes = false;
 788         bool visual = false;
 789         enum dump_mode mode;
 790         bool linum = false;
 791         int *fds = NULL;
 792         int nb_fds, i = 0;
 793         int err = -1;
 794         __u64 arrays;
 795
 796         if (is_prefix(*argv, "jited")) {
 797                 if (disasm_init())
 798                         return -1;
 799                 mode = DUMP_JITED;
 800         } else if (is_prefix(*argv, "xlated")) {
 801                 mode = DUMP_XLATED;
 802         } else {
 803                 p_err("expected 'xlated' or 'jited', got: %s", *argv);
 804                 return -1;
 805         }
 806         NEXT_ARG();
 807
 808         if (argc < 2)
 809                 usage();
 810
 811         fds = malloc(sizeof(int));
 812         if (!fds) {
 813                 p_err("mem alloc failed");
 814                 return -1;
 815         }
 816         nb_fds = prog_parse_fds(&argc, &argv, &fds);
 817         if (nb_fds < 1)
 818                 goto exit_free;
 819
 820         if (is_prefix(*argv, "file")) {
 821                 NEXT_ARG();
 822                 if (!argc) {
 823                         p_err("expected file path");
 824                         goto exit_close;
 825                 }
 826                 if (nb_fds > 1) {
 827                         p_err("several programs matched");
 828                         goto exit_close;
 829                 }
 830
 831                 filepath = *argv;
 832                 NEXT_ARG();
 833         } else if (is_prefix(*argv, "opcodes")) {
 834                 opcodes = true;
 835                 NEXT_ARG();
 836         } else if (is_prefix(*argv, "visual")) {
 837                 if (nb_fds > 1) {
 838                         p_err("several programs matched");
 839                         goto exit_close;
 840                 }
 841
 842                 visual = true;
 843                 NEXT_ARG();
 844         } else if (is_prefix(*argv, "linum")) {
 845                 linum = true;
 846                 NEXT_ARG();
 847         }
 848
 849         if (argc) {
 850                 usage();
 851                 goto exit_close;
 852         }
 853
 854         if (mode == DUMP_JITED)
 855                 arrays = 1UL << BPF_PROG_INFO_JITED_INSNS;
 856         else
 857                 arrays = 1UL << BPF_PROG_INFO_XLATED_INSNS;
 858
 859         arrays |= 1UL << BPF_PROG_INFO_JITED_KSYMS;
 860         arrays |= 1UL << BPF_PROG_INFO_JITED_FUNC_LENS;
 861         arrays |= 1UL << BPF_PROG_INFO_FUNC_INFO;
 862         arrays |= 1UL << BPF_PROG_INFO_LINE_INFO;
 863         arrays |= 1UL << BPF_PROG_INFO_JITED_LINE_INFO;
 864
 865         if (json_output && nb_fds > 1)
 866                 jsonw_start_array(json_wtr);    /* root array */
 867         for (i = 0; i < nb_fds; i++) {
 868                 info_linear = bpf_program__get_prog_info_linear(fds[i], arrays);
 869                 if (IS_ERR_OR_NULL(info_linear)) {
 870                         p_err("can't get prog info: %s", strerror(errno));
 871                         break;
 872                 }
 873
 874                 if (json_output && nb_fds > 1) {
 875                         jsonw_start_object(json_wtr);   /* prog object */
 876                         print_prog_header_json(&info_linear->info);
 877                         jsonw_name(json_wtr, "insns");
 878                 } else if (nb_fds > 1) {
 879                         print_prog_header_plain(&info_linear->info);
 880                 }
 881
 882                 err = prog_dump(&info_linear->info, mode, filepath, opcodes,
 883                                 visual, linum);
 884
 885                 if (json_output && nb_fds > 1)
 886                         jsonw_end_object(json_wtr);     /* prog object */
 887                 else if (i != nb_fds - 1 && nb_fds > 1)
 888                         printf("\n");
 889
 890                 free(info_linear);
 891                 if (err)
 892                         break;
 893                 close(fds[i]);
 894         }
 895         if (json_output && nb_fds > 1)
 896                 jsonw_end_array(json_wtr);      /* root array */
 897
 898 exit_close:
 899         for (; i < nb_fds; i++)
 900                 close(fds[i]);
 901 exit_free:
 902         free(fds);
 903         return err;
 904 }
 905
 906 static int do_pin(int argc, char **argv)
 907 {
 908         int err;
 909
 910         err = do_pin_any(argc, argv, prog_parse_fd);
 911         if (!err && json_output)
 912                 jsonw_null(json_wtr);
 913         return err;
 914 }
 915
 916 struct map_replace {
 917         int idx;
 918         int fd;
 919         char *name;
 920 };
 921
 922 static int map_replace_compar(const void *p1, const void *p2)
 923 {
 924         const struct map_replace *a = p1, *b = p2;
 925
 926         return a->idx - b->idx;
 927 }
 928
 929 static int parse_attach_detach_args(int argc, char **argv, int *progfd,
 930                                     enum bpf_attach_type *attach_type,
 931                                     int *mapfd)
 932 {
 933         if (!REQ_ARGS(3))
 934                 return -EINVAL;
 935
 936         *progfd = prog_parse_fd(&argc, &argv);
 937         if (*progfd < 0)
 938                 return *progfd;
 939
 940         *attach_type = parse_attach_type(*argv);
 941         if (*attach_type == __MAX_BPF_ATTACH_TYPE) {
 942                 p_err("invalid attach/detach type");
 943                 return -EINVAL;
 944         }
 945
 946         if (*attach_type == BPF_FLOW_DISSECTOR) {
 947                 *mapfd = 0;
 948                 return 0;
 949         }
 950
 951         NEXT_ARG();
 952         if (!REQ_ARGS(2))
 953                 return -EINVAL;
 954
 955         *mapfd = map_parse_fd(&argc, &argv);
 956         if (*mapfd < 0)
 957                 return *mapfd;
 958
 959         return 0;
 960 }
 961
 962 static int do_attach(int argc, char **argv)
 963 {
 964         enum bpf_attach_type attach_type;
 965         int err, progfd;
 966         int mapfd;
 967
 968         err = parse_attach_detach_args(argc, argv,
 969                                        &progfd, &attach_type, &mapfd);
 970         if (err)
 971                 return err;
 972
 973         err = bpf_prog_attach(progfd, mapfd, attach_type, 0);
 974         if (err) {
 975                 p_err("failed prog attach to map");
 976                 return -EINVAL;
 977         }
 978
 979         if (json_output)
 980                 jsonw_null(json_wtr);
 981         return 0;
 982 }
 983
 984 static int do_detach(int argc, char **argv)
 985 {
 986         enum bpf_attach_type attach_type;
 987         int err, progfd;
 988         int mapfd;
 989
 990         err = parse_attach_detach_args(argc, argv,
 991                                        &progfd, &attach_type, &mapfd);
 992         if (err)
 993                 return err;
 994
 995         err = bpf_prog_detach2(progfd, mapfd, attach_type);
 996         if (err) {
 997                 p_err("failed prog detach from map");
 998                 return -EINVAL;
 999         }
1000
1001         if (json_output)
1002                 jsonw_null(json_wtr);
1003         return 0;
1004 }
1005
1006 static int check_single_stdin(char *file_data_in, char *file_ctx_in)
1007 {
1008         if (file_data_in && file_ctx_in &&
1009             !strcmp(file_data_in, "-") && !strcmp(file_ctx_in, "-")) {
1010                 p_err("cannot use standard input for both data_in and ctx_in");
1011                 return -1;
1012         }
1013
1014         return 0;
1015 }
1016
1017 static int get_run_data(const char *fname, void **data_ptr, unsigned int *size)
1018 {
1019         size_t block_size = 256;
1020         size_t buf_size = block_size;
1021         size_t nb_read = 0;
1022         void *tmp;
1023         FILE *f;
1024
1025         if (!fname) {
1026                 *data_ptr = NULL;
1027                 *size = 0;
1028                 return 0;
1029         }
1030
1031         if (!strcmp(fname, "-"))
1032                 f = stdin;
1033         else
1034                 f = fopen(fname, "r");
1035         if (!f) {
1036                 p_err("failed to open %s: %s", fname, strerror(errno));
1037                 return -1;
1038         }
1039
1040         *data_ptr = malloc(block_size);
1041         if (!*data_ptr) {
1042                 p_err("failed to allocate memory for data_in/ctx_in: %s",
1043                       strerror(errno));
1044                 goto err_fclose;
1045         }
1046
1047         while ((nb_read += fread(*data_ptr + nb_read, 1, block_size, f))) {
1048                 if (feof(f))
1049                         break;
1050                 if (ferror(f)) {
1051                         p_err("failed to read data_in/ctx_in from %s: %s",
1052                               fname, strerror(errno));
1053                         goto err_free;
1054                 }
1055                 if (nb_read > buf_size - block_size) {
1056                         if (buf_size == UINT32_MAX) {
1057                                 p_err("data_in/ctx_in is too long (max: %d)",
1058                                       UINT32_MAX);
1059                                 goto err_free;
1060                         }
1061                         /* No space for fread()-ing next chunk; realloc() */
1062                         buf_size *= 2;
1063                         tmp = realloc(*data_ptr, buf_size);
1064                         if (!tmp) {
1065                                 p_err("failed to reallocate data_in/ctx_in: %s",
1066                                       strerror(errno));
1067                                 goto err_free;
1068                         }
1069                         *data_ptr = tmp;
1070                 }
1071         }
1072         if (f != stdin)
1073                 fclose(f);
1074
1075         *size = nb_read;
1076         return 0;
1077
1078 err_free:
1079         free(*data_ptr);
1080         *data_ptr = NULL;
1081 err_fclose:
1082         if (f != stdin)
1083                 fclose(f);
1084         return -1;
1085 }
1086
1087 static void hex_print(void *data, unsigned int size, FILE *f)
1088 {
1089         size_t i, j;
1090         char c;
1091
1092         for (i = 0; i < size; i += 16) {
1093                 /* Row offset */
1094                 fprintf(f, "%07zx\t", i);
1095
1096                 /* Hexadecimal values */
1097                 for (j = i; j < i + 16 && j < size; j++)
1098                         fprintf(f, "%02x%s", *(uint8_t *)(data + j),
1099                                 j % 2 ? " " : "");
1100                 for (; j < i + 16; j++)
1101                         fprintf(f, "  %s", j % 2 ? " " : "");
1102
1103                 /* ASCII values (if relevant), '.' otherwise */
1104                 fprintf(f, "| ");
1105                 for (j = i; j < i + 16 && j < size; j++) {
1106                         c = *(char *)(data + j);
1107                         if (c < ' ' || c > '~')
1108                                 c = '.';
1109                         fprintf(f, "%c%s", c, j == i + 7 ? " " : "");
1110                 }
1111
1112                 fprintf(f, "\n");
1113         }
1114 }
1115
1116 static int
1117 print_run_output(void *data, unsigned int size, const char *fname,
1118                  const char *json_key)
1119 {
1120         size_t nb_written;
1121         FILE *f;
1122
1123         if (!fname)
1124                 return 0;
1125
1126         if (!strcmp(fname, "-")) {
1127                 f = stdout;
1128                 if (json_output) {
1129                         jsonw_name(json_wtr, json_key);
1130                         print_data_json(data, size);
1131                 } else {
1132                         hex_print(data, size, f);
1133                 }
1134                 return 0;
1135         }
1136
1137         f = fopen(fname, "w");
1138         if (!f) {
1139                 p_err("failed to open %s: %s", fname, strerror(errno));
1140                 return -1;
1141         }
1142
1143         nb_written = fwrite(data, 1, size, f);
1144         fclose(f);
1145         if (nb_written != size) {
1146                 p_err("failed to write output data/ctx: %s", strerror(errno));
1147                 return -1;
1148         }
1149
1150         return 0;
1151 }
1152
1153 static int alloc_run_data(void **data_ptr, unsigned int size_out)
1154 {
1155         *data_ptr = calloc(size_out, 1);
1156         if (!*data_ptr) {
1157                 p_err("failed to allocate memory for output data/ctx: %s",
1158                       strerror(errno));
1159                 return -1;
1160         }
1161
1162         return 0;
1163 }
1164
1165 static int do_run(int argc, char **argv)
1166 {
1167         char *data_fname_in = NULL, *data_fname_out = NULL;
1168         char *ctx_fname_in = NULL, *ctx_fname_out = NULL;
1169         struct bpf_prog_test_run_attr test_attr = {0};
1170         const unsigned int default_size = SZ_32K;
1171         void *data_in = NULL, *data_out = NULL;
1172         void *ctx_in = NULL, *ctx_out = NULL;
1173         unsigned int repeat = 1;
1174         int fd, err;
1175
1176         if (!REQ_ARGS(4))
1177                 return -1;
1178
1179         fd = prog_parse_fd(&argc, &argv);
1180         if (fd < 0)
1181                 return -1;
1182
1183         while (argc) {
1184                 if (detect_common_prefix(*argv, "data_in", "data_out",
1185                                          "data_size_out", NULL))
1186                         return -1;
1187                 if (detect_common_prefix(*argv, "ctx_in", "ctx_out",
1188                                          "ctx_size_out", NULL))
1189                         return -1;
1190
1191                 if (is_prefix(*argv, "data_in")) {
1192                         NEXT_ARG();
1193                         if (!REQ_ARGS(1))
1194                                 return -1;
1195
1196                         data_fname_in = GET_ARG();
1197                         if (check_single_stdin(data_fname_in, ctx_fname_in))
1198                                 return -1;
1199                 } else if (is_prefix(*argv, "data_out")) {
1200                         NEXT_ARG();
1201                         if (!REQ_ARGS(1))
1202                                 return -1;
1203
1204                         data_fname_out = GET_ARG();
1205                 } else if (is_prefix(*argv, "data_size_out")) {
1206                         char *endptr;
1207
1208                         NEXT_ARG();
1209                         if (!REQ_ARGS(1))
1210                                 return -1;
1211
1212                         test_attr.data_size_out = strtoul(*argv, &endptr, 0);
1213                         if (*endptr) {
1214                                 p_err("can't parse %s as output data size",
1215                                       *argv);
1216                                 return -1;
1217                         }
1218                         NEXT_ARG();
1219                 } else if (is_prefix(*argv, "ctx_in")) {
1220                         NEXT_ARG();
1221                         if (!REQ_ARGS(1))
1222                                 return -1;
1223
1224                         ctx_fname_in = GET_ARG();
1225                         if (check_single_stdin(data_fname_in, ctx_fname_in))
1226                                 return -1;
1227                 } else if (is_prefix(*argv, "ctx_out")) {
1228                         NEXT_ARG();
1229                         if (!REQ_ARGS(1))
1230                                 return -1;
1231
1232                         ctx_fname_out = GET_ARG();
1233                 } else if (is_prefix(*argv, "ctx_size_out")) {
1234                         char *endptr;
1235
1236                         NEXT_ARG();
1237                         if (!REQ_ARGS(1))
1238                                 return -1;
1239
1240                         test_attr.ctx_size_out = strtoul(*argv, &endptr, 0);
1241                         if (*endptr) {
1242                                 p_err("can't parse %s as output context size",
1243                                       *argv);
1244                                 return -1;
1245                         }
1246                         NEXT_ARG();
1247                 } else if (is_prefix(*argv, "repeat")) {
1248                         char *endptr;
1249
1250                         NEXT_ARG();
1251                         if (!REQ_ARGS(1))
1252                                 return -1;
1253
1254                         repeat = strtoul(*argv, &endptr, 0);
1255                         if (*endptr) {
1256                                 p_err("can't parse %s as repeat number",
1257                                       *argv);
1258                                 return -1;
1259                         }
1260                         NEXT_ARG();
1261                 } else {
1262                         p_err("expected no more arguments, 'data_in', 'data_out', 'data_size_out', 'ctx_in', 'ctx_out', 'ctx_size_out' or 'repeat', got: '%s'?",
1263                               *argv);
1264                         return -1;
1265                 }
1266         }
1267
1268         err = get_run_data(data_fname_in, &data_in, &test_attr.data_size_in);
1269         if (err)
1270                 return -1;
1271
1272         if (data_in) {
1273                 if (!test_attr.data_size_out)
1274                         test_attr.data_size_out = default_size;
1275                 err = alloc_run_data(&data_out, test_attr.data_size_out);
1276                 if (err)
1277                         goto free_data_in;
1278         }
1279
1280         err = get_run_data(ctx_fname_in, &ctx_in, &test_attr.ctx_size_in);
1281         if (err)
1282                 goto free_data_out;
1283
1284         if (ctx_in) {
1285                 if (!test_attr.ctx_size_out)
1286                         test_attr.ctx_size_out = default_size;
1287                 err = alloc_run_data(&ctx_out, test_attr.ctx_size_out);
1288                 if (err)
1289                         goto free_ctx_in;
1290         }
1291
1292         test_attr.prog_fd       = fd;
1293         test_attr.repeat        = repeat;
1294         test_attr.data_in       = data_in;
1295         test_attr.data_out      = data_out;
1296         test_attr.ctx_in        = ctx_in;
1297         test_attr.ctx_out       = ctx_out;
1298
1299         err = bpf_prog_test_run_xattr(&test_attr);
1300         if (err) {
1301                 p_err("failed to run program: %s", strerror(errno));
1302                 goto free_ctx_out;
1303         }
1304
1305         err = 0;
1306
1307         if (json_output)
1308                 jsonw_start_object(json_wtr);   /* root */
1309
1310         /* Do not exit on errors occurring when printing output data/context,
1311          * we still want to print return value and duration for program run.
1312          */
1313         if (test_attr.data_size_out)
1314                 err += print_run_output(test_attr.data_out,
1315                                         test_attr.data_size_out,
1316                                         data_fname_out, "data_out");
1317         if (test_attr.ctx_size_out)
1318                 err += print_run_output(test_attr.ctx_out,
1319                                         test_attr.ctx_size_out,
1320                                         ctx_fname_out, "ctx_out");
1321
1322         if (json_output) {
1323                 jsonw_uint_field(json_wtr, "retval", test_attr.retval);
1324                 jsonw_uint_field(json_wtr, "duration", test_attr.duration);
1325                 jsonw_end_object(json_wtr);     /* root */
1326         } else {
1327                 fprintf(stdout, "Return value: %u, duration%s: %uns\n",
1328                         test_attr.retval,
1329                         repeat > 1 ? " (average)" : "", test_attr.duration);
1330         }
1331
1332 free_ctx_out:
1333         free(ctx_out);
1334 free_ctx_in:
1335         free(ctx_in);
1336 free_data_out:
1337         free(data_out);
1338 free_data_in:
1339         free(data_in);
1340
1341         return err;
1342 }
1343
1344 static int
1345 get_prog_type_by_name(const char *name, enum bpf_prog_type *prog_type,
1346                       enum bpf_attach_type *expected_attach_type)
1347 {
1348         libbpf_print_fn_t print_backup;
1349         int ret;
1350
1351         ret = libbpf_prog_type_by_name(name, prog_type, expected_attach_type);
1352         if (!ret)
1353                 return ret;
1354
1355         /* libbpf_prog_type_by_name() failed, let's re-run with debug level */
1356         print_backup = libbpf_set_print(print_all_levels);
1357         ret = libbpf_prog_type_by_name(name, prog_type, expected_attach_type);
1358         libbpf_set_print(print_backup);
1359
1360         return ret;
1361 }
1362
1363 static int load_with_options(int argc, char **argv, bool first_prog_only)
1364 {
1365         enum bpf_prog_type common_prog_type = BPF_PROG_TYPE_UNSPEC;
1366         DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts,
1367                 .relaxed_maps = relaxed_maps,
1368         );
1369         struct bpf_object_load_attr load_attr = { 0 };
1370         enum bpf_attach_type expected_attach_type;
1371         struct map_replace *map_replace = NULL;
1372         struct bpf_program *prog = NULL, *pos;
1373         unsigned int old_map_fds = 0;
1374         const char *pinmaps = NULL;
1375         struct bpf_object *obj;
1376         struct bpf_map *map;
1377         const char *pinfile;
1378         unsigned int i, j;
1379         __u32 ifindex = 0;
1380         const char *file;
1381         int idx, err;
1382
1383
1384         if (!REQ_ARGS(2))
1385                 return -1;
1386         file = GET_ARG();
1387         pinfile = GET_ARG();
1388
1389         while (argc) {
1390                 if (is_prefix(*argv, "type")) {
1391                         char *type;
1392
1393                         NEXT_ARG();
1394
1395                         if (common_prog_type != BPF_PROG_TYPE_UNSPEC) {
1396                                 p_err("program type already specified");
1397                                 goto err_free_reuse_maps;
1398                         }
1399                         if (!REQ_ARGS(1))
1400                                 goto err_free_reuse_maps;
1401
1402                         /* Put a '/' at the end of type to appease libbpf */
1403                         type = malloc(strlen(*argv) + 2);
1404                         if (!type) {
1405                                 p_err("mem alloc failed");
1406                                 goto err_free_reuse_maps;
1407                         }
1408                         *type = 0;
1409                         strcat(type, *argv);
1410                         strcat(type, "/");
1411
1412                         err = get_prog_type_by_name(type, &common_prog_type,
1413                                                     &expected_attach_type);
1414                         free(type);
1415                         if (err < 0)
1416                                 goto err_free_reuse_maps;
1417
1418                         NEXT_ARG();
1419                 } else if (is_prefix(*argv, "map")) {
1420                         void *new_map_replace;
1421                         char *endptr, *name;
1422                         int fd;
1423
1424                         NEXT_ARG();
1425
1426                         if (!REQ_ARGS(4))
1427                                 goto err_free_reuse_maps;
1428
1429                         if (is_prefix(*argv, "idx")) {
1430                                 NEXT_ARG();
1431
1432                                 idx = strtoul(*argv, &endptr, 0);
1433                                 if (*endptr) {
1434                                         p_err("can't parse %s as IDX", *argv);
1435                                         goto err_free_reuse_maps;
1436                                 }
1437                                 name = NULL;
1438                         } else if (is_prefix(*argv, "name")) {
1439                                 NEXT_ARG();
1440
1441                                 name = *argv;
1442                                 idx = -1;
1443                         } else {
1444                                 p_err("expected 'idx' or 'name', got: '%s'?",
1445                                       *argv);
1446                                 goto err_free_reuse_maps;
1447                         }
1448                         NEXT_ARG();
1449
1450                         fd = map_parse_fd(&argc, &argv);
1451                         if (fd < 0)
1452                                 goto err_free_reuse_maps;
1453
1454                         new_map_replace = reallocarray(map_replace,
1455                                                        old_map_fds + 1,
1456                                                        sizeof(*map_replace));
1457                         if (!new_map_replace) {
1458                                 p_err("mem alloc failed");
1459                                 goto err_free_reuse_maps;
1460                         }
1461                         map_replace = new_map_replace;
1462
1463                         map_replace[old_map_fds].idx = idx;
1464                         map_replace[old_map_fds].name = name;
1465                         map_replace[old_map_fds].fd = fd;
1466                         old_map_fds++;
1467                 } else if (is_prefix(*argv, "dev")) {
1468                         NEXT_ARG();
1469
1470                         if (ifindex) {
1471                                 p_err("offload device already specified");
1472                                 goto err_free_reuse_maps;
1473                         }
1474                         if (!REQ_ARGS(1))
1475                                 goto err_free_reuse_maps;
1476
1477                         ifindex = if_nametoindex(*argv);
1478                         if (!ifindex) {
1479                                 p_err("unrecognized netdevice '%s': %s",
1480                                       *argv, strerror(errno));
1481                                 goto err_free_reuse_maps;
1482                         }
1483                         NEXT_ARG();
1484                 } else if (is_prefix(*argv, "pinmaps")) {
1485                         NEXT_ARG();
1486
1487                         if (!REQ_ARGS(1))
1488                                 goto err_free_reuse_maps;
1489
1490                         pinmaps = GET_ARG();
1491                 } else {
1492                         p_err("expected no more arguments, 'type', 'map' or 'dev', got: '%s'?",
1493                               *argv);
1494                         goto err_free_reuse_maps;
1495                 }
1496         }
1497
1498         set_max_rlimit();
1499
1500         obj = bpf_object__open_file(file, &open_opts);
1501         if (IS_ERR_OR_NULL(obj)) {
1502                 p_err("failed to open object file");
1503                 goto err_free_reuse_maps;
1504         }
1505
1506         bpf_object__for_each_program(pos, obj) {
1507                 enum bpf_prog_type prog_type = common_prog_type;
1508
1509                 if (prog_type == BPF_PROG_TYPE_UNSPEC) {
1510                         const char *sec_name = bpf_program__section_name(pos);
1511
1512                         err = get_prog_type_by_name(sec_name, &prog_type,
1513                                                     &expected_attach_type);
1514                         if (err < 0)
1515                                 goto err_close_obj;
1516                 }
1517
1518                 bpf_program__set_ifindex(pos, ifindex);
1519                 bpf_program__set_type(pos, prog_type);
1520                 bpf_program__set_expected_attach_type(pos, expected_attach_type);
1521         }
1522
1523         qsort(map_replace, old_map_fds, sizeof(*map_replace),
1524               map_replace_compar);
1525
1526         /* After the sort maps by name will be first on the list, because they
1527          * have idx == -1.  Resolve them.
1528          */
1529         j = 0;
1530         while (j < old_map_fds && map_replace[j].name) {
1531                 i = 0;
1532                 bpf_object__for_each_map(map, obj) {
1533                         if (!strcmp(bpf_map__name(map), map_replace[j].name)) {
1534                                 map_replace[j].idx = i;
1535                                 break;
1536                         }
1537                         i++;
1538                 }
1539                 if (map_replace[j].idx == -1) {
1540                         p_err("unable to find map '%s'", map_replace[j].name);
1541                         goto err_close_obj;
1542                 }
1543                 j++;
1544         }
1545         /* Resort if any names were resolved */
1546         if (j)
1547                 qsort(map_replace, old_map_fds, sizeof(*map_replace),
1548                       map_replace_compar);
1549
1550         /* Set ifindex and name reuse */
1551         j = 0;
1552         idx = 0;
1553         bpf_object__for_each_map(map, obj) {
1554                 if (!bpf_map__is_offload_neutral(map))
1555                         bpf_map__set_ifindex(map, ifindex);
1556
1557                 if (j < old_map_fds && idx == map_replace[j].idx) {
1558                         err = bpf_map__reuse_fd(map, map_replace[j++].fd);
1559                         if (err) {
1560                                 p_err("unable to set up map reuse: %d", err);
1561                                 goto err_close_obj;
1562                         }
1563
1564                         /* Next reuse wants to apply to the same map */
1565                         if (j < old_map_fds && map_replace[j].idx == idx) {
1566                                 p_err("replacement for map idx %d specified more than once",
1567                                       idx);
1568                                 goto err_close_obj;
1569                         }
1570                 }
1571
1572                 idx++;
1573         }
1574         if (j < old_map_fds) {
1575                 p_err("map idx '%d' not used", map_replace[j].idx);
1576                 goto err_close_obj;
1577         }
1578
1579         load_attr.obj = obj;
1580         if (verifier_logs)
1581                 /* log_level1 + log_level2 + stats, but not stable UAPI */
1582                 load_attr.log_level = 1 + 2 + 4;
1583
1584         err = bpf_object__load_xattr(&load_attr);
1585         if (err) {
1586                 p_err("failed to load object file");
1587                 goto err_close_obj;
1588         }
1589
1590         err = mount_bpffs_for_pin(pinfile);
1591         if (err)
1592                 goto err_close_obj;
1593
1594         if (first_prog_only) {
1595                 prog = bpf_program__next(NULL, obj);
1596                 if (!prog) {
1597                         p_err("object file doesn't contain any bpf program");
1598                         goto err_close_obj;
1599                 }
1600
1601                 err = bpf_obj_pin(bpf_program__fd(prog), pinfile);
1602                 if (err) {
1603                         p_err("failed to pin program %s",
1604                               bpf_program__section_name(prog));
1605                         goto err_close_obj;
1606                 }
1607         } else {
1608                 err = bpf_object__pin_programs(obj, pinfile);
1609                 if (err) {
1610                         p_err("failed to pin all programs");
1611                         goto err_close_obj;
1612                 }
1613         }
1614
1615         if (pinmaps) {
1616                 err = bpf_object__pin_maps(obj, pinmaps);
1617                 if (err) {
1618                         p_err("failed to pin all maps");
1619                         goto err_unpin;
1620                 }
1621         }
1622
1623         if (json_output)
1624                 jsonw_null(json_wtr);
1625
1626         bpf_object__close(obj);
1627         for (i = 0; i < old_map_fds; i++)
1628                 close(map_replace[i].fd);
1629         free(map_replace);
1630
1631         return 0;
1632
1633 err_unpin:
1634         if (first_prog_only)
1635                 unlink(pinfile);
1636         else
1637                 bpf_object__unpin_programs(obj, pinfile);
1638 err_close_obj:
1639         bpf_object__close(obj);
1640 err_free_reuse_maps:
1641         for (i = 0; i < old_map_fds; i++)
1642                 close(map_replace[i].fd);
1643         free(map_replace);
1644         return -1;
1645 }
1646
1647 static int do_load(int argc, char **argv)
1648 {
1649         return load_with_options(argc, argv, true);
1650 }
1651
1652 static int do_loadall(int argc, char **argv)
1653 {
1654         return load_with_options(argc, argv, false);
1655 }
1656
1657 #ifdef BPFTOOL_WITHOUT_SKELETONS
1658
1659 static int do_profile(int argc, char **argv)
1660 {
1661         p_err("bpftool prog profile command is not supported. Please build bpftool with clang >= 10.0.0");
1662         return 0;
1663 }
1664
1665 #else /* BPFTOOL_WITHOUT_SKELETONS */
1666
1667 #include "profiler.skel.h"
1668
1669 struct profile_metric {
1670         const char *name;
1671         struct bpf_perf_event_value val;
1672         struct perf_event_attr attr;
1673         bool selected;
1674
1675         /* calculate ratios like instructions per cycle */
1676         const int ratio_metric; /* 0 for N/A, 1 for index 0 (cycles) */
1677         const char *ratio_desc;
1678         const float ratio_mul;
1679 } metrics[] = {
1680         {
1681                 .name = "cycles",
1682                 .attr = {
1683                         .type = PERF_TYPE_HARDWARE,
1684                         .config = PERF_COUNT_HW_CPU_CYCLES,
1685                         .exclude_user = 1,
1686                 },
1687         },
1688         {
1689                 .name = "instructions",
1690                 .attr = {
1691                         .type = PERF_TYPE_HARDWARE,
1692                         .config = PERF_COUNT_HW_INSTRUCTIONS,
1693                         .exclude_user = 1,
1694                 },
1695                 .ratio_metric = 1,
1696                 .ratio_desc = "insns per cycle",
1697                 .ratio_mul = 1.0,
1698         },
1699         {
1700                 .name = "l1d_loads",
1701                 .attr = {
1702                         .type = PERF_TYPE_HW_CACHE,
1703                         .config =
1704                                 PERF_COUNT_HW_CACHE_L1D |
1705                                 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1706                                 (PERF_COUNT_HW_CACHE_RESULT_ACCESS << 16),
1707                         .exclude_user = 1,
1708                 },
1709         },
1710         {
1711                 .name = "llc_misses",
1712                 .attr = {
1713                         .type = PERF_TYPE_HW_CACHE,
1714                         .config =
1715                                 PERF_COUNT_HW_CACHE_LL |
1716                                 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1717                                 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
1718                         .exclude_user = 1
1719                 },
1720                 .ratio_metric = 2,
1721                 .ratio_desc = "LLC misses per million insns",
1722                 .ratio_mul = 1e6,
1723         },
1724         {
1725                 .name = "itlb_misses",
1726                 .attr = {
1727                         .type = PERF_TYPE_HW_CACHE,
1728                         .config =
1729                                 PERF_COUNT_HW_CACHE_ITLB |
1730                                 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1731                                 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
1732                         .exclude_user = 1
1733                 },
1734                 .ratio_metric = 2,
1735                 .ratio_desc = "itlb misses per million insns",
1736                 .ratio_mul = 1e6,
1737         },
1738         {
1739                 .name = "dtlb_misses",
1740                 .attr = {
1741                         .type = PERF_TYPE_HW_CACHE,
1742                         .config =
1743                                 PERF_COUNT_HW_CACHE_DTLB |
1744                                 (PERF_COUNT_HW_CACHE_OP_READ << 8) |
1745                                 (PERF_COUNT_HW_CACHE_RESULT_MISS << 16),
1746                         .exclude_user = 1
1747                 },
1748                 .ratio_metric = 2,
1749                 .ratio_desc = "dtlb misses per million insns",
1750                 .ratio_mul = 1e6,
1751         },
1752 };
1753
1754 static __u64 profile_total_count;
1755
1756 #define MAX_NUM_PROFILE_METRICS 4
1757
1758 static int profile_parse_metrics(int argc, char **argv)
1759 {
1760         unsigned int metric_cnt;
1761         int selected_cnt = 0;
1762         unsigned int i;
1763
1764         metric_cnt = sizeof(metrics) / sizeof(struct profile_metric);
1765
1766         while (argc > 0) {
1767                 for (i = 0; i < metric_cnt; i++) {
1768                         if (is_prefix(argv[0], metrics[i].name)) {
1769                                 if (!metrics[i].selected)
1770                                         selected_cnt++;
1771                                 metrics[i].selected = true;
1772                                 break;
1773                         }
1774                 }
1775                 if (i == metric_cnt) {
1776                         p_err("unknown metric %s", argv[0]);
1777                         return -1;
1778                 }
1779                 NEXT_ARG();
1780         }
1781         if (selected_cnt > MAX_NUM_PROFILE_METRICS) {
1782                 p_err("too many (%d) metrics, please specify no more than %d metrics at at time",
1783                       selected_cnt, MAX_NUM_PROFILE_METRICS);
1784                 return -1;
1785         }
1786         return selected_cnt;
1787 }
1788
1789 static void profile_read_values(struct profiler_bpf *obj)
1790 {
1791         __u32 m, cpu, num_cpu = obj->rodata->num_cpu;
1792         int reading_map_fd, count_map_fd;
1793         __u64 counts[num_cpu];
1794         __u32 key = 0;
1795         int err;
1796
1797         reading_map_fd = bpf_map__fd(obj->maps.accum_readings);
1798         count_map_fd = bpf_map__fd(obj->maps.counts);
1799         if (reading_map_fd < 0 || count_map_fd < 0) {
1800                 p_err("failed to get fd for map");
1801                 return;
1802         }
1803
1804         err = bpf_map_lookup_elem(count_map_fd, &key, counts);
1805         if (err) {
1806                 p_err("failed to read count_map: %s", strerror(errno));
1807                 return;
1808         }
1809
1810         profile_total_count = 0;
1811         for (cpu = 0; cpu < num_cpu; cpu++)
1812                 profile_total_count += counts[cpu];
1813
1814         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1815                 struct bpf_perf_event_value values[num_cpu];
1816
1817                 if (!metrics[m].selected)
1818                         continue;
1819
1820                 err = bpf_map_lookup_elem(reading_map_fd, &key, values);
1821                 if (err) {
1822                         p_err("failed to read reading_map: %s",
1823                               strerror(errno));
1824                         return;
1825                 }
1826                 for (cpu = 0; cpu < num_cpu; cpu++) {
1827                         metrics[m].val.counter += values[cpu].counter;
1828                         metrics[m].val.enabled += values[cpu].enabled;
1829                         metrics[m].val.running += values[cpu].running;
1830                 }
1831                 key++;
1832         }
1833 }
1834
1835 static void profile_print_readings_json(void)
1836 {
1837         __u32 m;
1838
1839         jsonw_start_array(json_wtr);
1840         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1841                 if (!metrics[m].selected)
1842                         continue;
1843                 jsonw_start_object(json_wtr);
1844                 jsonw_string_field(json_wtr, "metric", metrics[m].name);
1845                 jsonw_lluint_field(json_wtr, "run_cnt", profile_total_count);
1846                 jsonw_lluint_field(json_wtr, "value", metrics[m].val.counter);
1847                 jsonw_lluint_field(json_wtr, "enabled", metrics[m].val.enabled);
1848                 jsonw_lluint_field(json_wtr, "running", metrics[m].val.running);
1849
1850                 jsonw_end_object(json_wtr);
1851         }
1852         jsonw_end_array(json_wtr);
1853 }
1854
1855 static void profile_print_readings_plain(void)
1856 {
1857         __u32 m;
1858
1859         printf("\n%18llu %-20s\n", profile_total_count, "run_cnt");
1860         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1861                 struct bpf_perf_event_value *val = &metrics[m].val;
1862                 int r;
1863
1864                 if (!metrics[m].selected)
1865                         continue;
1866                 printf("%18llu %-20s", val->counter, metrics[m].name);
1867
1868                 r = metrics[m].ratio_metric - 1;
1869                 if (r >= 0 && metrics[r].selected &&
1870                     metrics[r].val.counter > 0) {
1871                         printf("# %8.2f %-30s",
1872                                val->counter * metrics[m].ratio_mul /
1873                                metrics[r].val.counter,
1874                                metrics[m].ratio_desc);
1875                 } else {
1876                         printf("%-41s", "");
1877                 }
1878
1879                 if (val->enabled > val->running)
1880                         printf("(%4.2f%%)",
1881                                val->running * 100.0 / val->enabled);
1882                 printf("\n");
1883         }
1884 }
1885
1886 static void profile_print_readings(void)
1887 {
1888         if (json_output)
1889                 profile_print_readings_json();
1890         else
1891                 profile_print_readings_plain();
1892 }
1893
1894 static char *profile_target_name(int tgt_fd)
1895 {
1896         struct bpf_prog_info_linear *info_linear;
1897         struct bpf_func_info *func_info;
1898         const struct btf_type *t;
1899         char *name = NULL;
1900         struct btf *btf;
1901
1902         info_linear = bpf_program__get_prog_info_linear(
1903                 tgt_fd, 1UL << BPF_PROG_INFO_FUNC_INFO);
1904         if (IS_ERR_OR_NULL(info_linear)) {
1905                 p_err("failed to get info_linear for prog FD %d", tgt_fd);
1906                 return NULL;
1907         }
1908
1909         if (info_linear->info.btf_id == 0 ||
1910             btf__get_from_id(info_linear->info.btf_id, &btf)) {
1911                 p_err("prog FD %d doesn't have valid btf", tgt_fd);
1912                 goto out;
1913         }
1914
1915         func_info = u64_to_ptr(info_linear->info.func_info);
1916         t = btf__type_by_id(btf, func_info[0].type_id);
1917         if (!t) {
1918                 p_err("btf %d doesn't have type %d",
1919                       info_linear->info.btf_id, func_info[0].type_id);
1920                 goto out;
1921         }
1922         name = strdup(btf__name_by_offset(btf, t->name_off));
1923 out:
1924         free(info_linear);
1925         return name;
1926 }
1927
1928 static struct profiler_bpf *profile_obj;
1929 static int profile_tgt_fd = -1;
1930 static char *profile_tgt_name;
1931 static int *profile_perf_events;
1932 static int profile_perf_event_cnt;
1933
1934 static void profile_close_perf_events(struct profiler_bpf *obj)
1935 {
1936         int i;
1937
1938         for (i = profile_perf_event_cnt - 1; i >= 0; i--)
1939                 close(profile_perf_events[i]);
1940
1941         free(profile_perf_events);
1942         profile_perf_event_cnt = 0;
1943 }
1944
1945 static int profile_open_perf_events(struct profiler_bpf *obj)
1946 {
1947         unsigned int cpu, m;
1948         int map_fd, pmu_fd;
1949
1950         profile_perf_events = calloc(
1951                 sizeof(int), obj->rodata->num_cpu * obj->rodata->num_metric);
1952         if (!profile_perf_events) {
1953                 p_err("failed to allocate memory for perf_event array: %s",
1954                       strerror(errno));
1955                 return -1;
1956         }
1957         map_fd = bpf_map__fd(obj->maps.events);
1958         if (map_fd < 0) {
1959                 p_err("failed to get fd for events map");
1960                 return -1;
1961         }
1962
1963         for (m = 0; m < ARRAY_SIZE(metrics); m++) {
1964                 if (!metrics[m].selected)
1965                         continue;
1966                 for (cpu = 0; cpu < obj->rodata->num_cpu; cpu++) {
1967                         pmu_fd = syscall(__NR_perf_event_open, &metrics[m].attr,
1968                                          -1/*pid*/, cpu, -1/*group_fd*/, 0);
1969                         if (pmu_fd < 0 ||
1970                             bpf_map_update_elem(map_fd, &profile_perf_event_cnt,
1971                                                 &pmu_fd, BPF_ANY) ||
1972                             ioctl(pmu_fd, PERF_EVENT_IOC_ENABLE, 0)) {
1973                                 p_err("failed to create event %s on cpu %d",
1974                                       metrics[m].name, cpu);
1975                                 return -1;
1976                         }
1977                         profile_perf_events[profile_perf_event_cnt++] = pmu_fd;
1978                 }
1979         }
1980         return 0;
1981 }
1982
1983 static void profile_print_and_cleanup(void)
1984 {
1985         profile_close_perf_events(profile_obj);
1986         profile_read_values(profile_obj);
1987         profile_print_readings();
1988         profiler_bpf__destroy(profile_obj);
1989
1990         close(profile_tgt_fd);
1991         free(profile_tgt_name);
1992 }
1993
1994 static void int_exit(int signo)
1995 {
1996         profile_print_and_cleanup();
1997         exit(0);
1998 }
1999
2000 static int do_profile(int argc, char **argv)
2001 {
2002         int num_metric, num_cpu, err = -1;
2003         struct bpf_program *prog;
2004         unsigned long duration;
2005         char *endptr;
2006
2007         /* we at least need two args for the prog and one metric */
2008         if (!REQ_ARGS(3))
2009                 return -EINVAL;
2010
2011         /* parse target fd */
2012         profile_tgt_fd = prog_parse_fd(&argc, &argv);
2013         if (profile_tgt_fd < 0) {
2014                 p_err("failed to parse fd");
2015                 return -1;
2016         }
2017
2018         /* parse profiling optional duration */
2019         if (argc > 2 && is_prefix(argv[0], "duration")) {
2020                 NEXT_ARG();
2021                 duration = strtoul(*argv, &endptr, 0);
2022                 if (*endptr)
2023                         usage();
2024                 NEXT_ARG();
2025         } else {
2026                 duration = UINT_MAX;
2027         }
2028
2029         num_metric = profile_parse_metrics(argc, argv);
2030         if (num_metric <= 0)
2031                 goto out;
2032
2033         num_cpu = libbpf_num_possible_cpus();
2034         if (num_cpu <= 0) {
2035                 p_err("failed to identify number of CPUs");
2036                 goto out;
2037         }
2038
2039         profile_obj = profiler_bpf__open();
2040         if (!profile_obj) {
2041                 p_err("failed to open and/or load BPF object");
2042                 goto out;
2043         }
2044
2045         profile_obj->rodata->num_cpu = num_cpu;
2046         profile_obj->rodata->num_metric = num_metric;
2047
2048         /* adjust map sizes */
2049         bpf_map__resize(profile_obj->maps.events, num_metric * num_cpu);
2050         bpf_map__resize(profile_obj->maps.fentry_readings, num_metric);
2051         bpf_map__resize(profile_obj->maps.accum_readings, num_metric);
2052         bpf_map__resize(profile_obj->maps.counts, 1);
2053
2054         /* change target name */
2055         profile_tgt_name = profile_target_name(profile_tgt_fd);
2056         if (!profile_tgt_name)
2057                 goto out;
2058
2059         bpf_object__for_each_program(prog, profile_obj->obj) {
2060                 err = bpf_program__set_attach_target(prog, profile_tgt_fd,
2061                                                      profile_tgt_name);
2062                 if (err) {
2063                         p_err("failed to set attach target\n");
2064                         goto out;
2065                 }
2066         }
2067
2068         set_max_rlimit();
2069         err = profiler_bpf__load(profile_obj);
2070         if (err) {
2071                 p_err("failed to load profile_obj");
2072                 goto out;
2073         }
2074
2075         err = profile_open_perf_events(profile_obj);
2076         if (err)
2077                 goto out;
2078
2079         err = profiler_bpf__attach(profile_obj);
2080         if (err) {
2081                 p_err("failed to attach profile_obj");
2082                 goto out;
2083         }
2084         signal(SIGINT, int_exit);
2085
2086         sleep(duration);
2087         profile_print_and_cleanup();
2088         return 0;
2089
2090 out:
2091         profile_close_perf_events(profile_obj);
2092         if (profile_obj)
2093                 profiler_bpf__destroy(profile_obj);
2094         close(profile_tgt_fd);
2095         free(profile_tgt_name);
2096         return err;
2097 }
2098
2099 #endif /* BPFTOOL_WITHOUT_SKELETONS */
2100
2101 static int do_help(int argc, char **argv)
2102 {
2103         if (json_output) {
2104                 jsonw_null(json_wtr);
2105                 return 0;
2106         }
2107
2108         fprintf(stderr,
2109                 "Usage: %1$s %2$s { show | list } [PROG]\n"
2110                 "       %1$s %2$s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
2111                 "       %1$s %2$s dump jited  PROG [{ file FILE | opcodes | linum }]\n"
2112                 "       %1$s %2$s pin   PROG FILE\n"
2113                 "       %1$s %2$s { load | loadall } OBJ  PATH \\\n"
2114                 "                         [type TYPE] [dev NAME] \\\n"
2115                 "                         [map { idx IDX | name NAME } MAP]\\\n"
2116                 "                         [pinmaps MAP_DIR]\n"
2117                 "       %1$s %2$s attach PROG ATTACH_TYPE [MAP]\n"
2118                 "       %1$s %2$s detach PROG ATTACH_TYPE [MAP]\n"
2119                 "       %1$s %2$s run PROG \\\n"
2120                 "                         data_in FILE \\\n"
2121                 "                         [data_out FILE [data_size_out L]] \\\n"
2122                 "                         [ctx_in FILE [ctx_out FILE [ctx_size_out M]]] \\\n"
2123                 "                         [repeat N]\n"
2124                 "       %1$s %2$s profile PROG [duration DURATION] METRICs\n"
2125                 "       %1$s %2$s tracelog\n"
2126                 "       %1$s %2$s help\n"
2127                 "\n"
2128                 "       " HELP_SPEC_MAP "\n"
2129                 "       " HELP_SPEC_PROGRAM "\n"
2130                 "       TYPE := { socket | kprobe | kretprobe | classifier | action |\n"
2131                 "                 tracepoint | raw_tracepoint | xdp | perf_event | cgroup/skb |\n"
2132                 "                 cgroup/sock | cgroup/dev | lwt_in | lwt_out | lwt_xmit |\n"
2133                 "                 lwt_seg6local | sockops | sk_skb | sk_msg | lirc_mode2 |\n"
2134                 "                 sk_reuseport | flow_dissector | cgroup/sysctl |\n"
2135                 "                 cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n"
2136                 "                 cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n"
2137                 "                 cgroup/getpeername4 | cgroup/getpeername6 |\n"
2138                 "                 cgroup/getsockname4 | cgroup/getsockname6 | cgroup/sendmsg4 |\n"
2139                 "                 cgroup/sendmsg6 | cgroup/recvmsg4 | cgroup/recvmsg6 |\n"
2140                 "                 cgroup/getsockopt | cgroup/setsockopt |\n"
2141                 "                 struct_ops | fentry | fexit | freplace | sk_lookup }\n"
2142                 "       ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n"
2143                 "                        flow_dissector }\n"
2144                 "       METRIC := { cycles | instructions | l1d_loads | llc_misses | itlb_misses | dtlb_misses }\n"
2145                 "       " HELP_SPEC_OPTIONS "\n"
2146                 "",
2147                 bin_name, argv[-2]);
2148
2149         return 0;
2150 }
2151
2152 static const struct cmd cmds[] = {
2153         { "show",       do_show },
2154         { "list",       do_show },
2155         { "help",       do_help },
2156         { "dump",       do_dump },
2157         { "pin",        do_pin },
2158         { "load",       do_load },
2159         { "loadall",    do_loadall },
2160         { "attach",     do_attach },
2161         { "detach",     do_detach },
2162         { "tracelog",   do_tracelog },
2163         { "run",        do_run },
2164         { "profile",    do_profile },
2165         { 0 }
2166 };
2167
2168 int do_prog(int argc, char **argv)
2169 {
2170         return cmd_select(cmds, argc, argv, do_help);
2171 }