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 <stdarg.h>
   8 #include <stdio.h>
   9 #include <stdlib.h>
  10 #include <string.h>
  11 #include <time.h>
  12 #include <unistd.h>
  13 #include <net/if.h>
  14 #include <sys/types.h>
  15 #include <sys/stat.h>
  16
  17 #include <linux/err.h>
  18 #include <linux/sizes.h>
  19
  20 #include <bpf.h>
  21 #include <btf.h>
  22 #include <libbpf.h>
  23
  24 #include "cfg.h"
  25 #include "main.h"
  26 #include "xlated_dumper.h"
  27
  28 static const char * const attach_type_strings[] = {
  29         [BPF_SK_SKB_STREAM_PARSER] = "stream_parser",
  30         [BPF_SK_SKB_STREAM_VERDICT] = "stream_verdict",
  31         [BPF_SK_MSG_VERDICT] = "msg_verdict",
  32         [BPF_FLOW_DISSECTOR] = "flow_dissector",
  33         [__MAX_BPF_ATTACH_TYPE] = NULL,
  34 };
  35
  36 static enum bpf_attach_type parse_attach_type(const char *str)
  37 {
  38         enum bpf_attach_type type;
  39
  40         for (type = 0; type < __MAX_BPF_ATTACH_TYPE; type++) {
  41                 if (attach_type_strings[type] &&
  42                     is_prefix(str, attach_type_strings[type]))
  43                         return type;
  44         }
  45
  46         return __MAX_BPF_ATTACH_TYPE;
  47 }
  48
  49 static void print_boot_time(__u64 nsecs, char *buf, unsigned int size)
  50 {
  51         struct timespec real_time_ts, boot_time_ts;
  52         time_t wallclock_secs;
  53         struct tm load_tm;
  54
  55         buf[--size] = '\0';
  56
  57         if (clock_gettime(CLOCK_REALTIME, &real_time_ts) ||
  58             clock_gettime(CLOCK_BOOTTIME, &boot_time_ts)) {
  59                 perror("Can't read clocks");
  60                 snprintf(buf, size, "%llu", nsecs / 1000000000);
  61                 return;
  62         }
  63
  64         wallclock_secs = (real_time_ts.tv_sec - boot_time_ts.tv_sec) +
  65                 (real_time_ts.tv_nsec - boot_time_ts.tv_nsec + nsecs) /
  66                 1000000000;
  67
  68
  69         if (!localtime_r(&wallclock_secs, &load_tm)) {
  70                 snprintf(buf, size, "%llu", nsecs / 1000000000);
  71                 return;
  72         }
  73
  74         if (json_output)
  75                 strftime(buf, size, "%s", &load_tm);
  76         else
  77                 strftime(buf, size, "%FT%T%z", &load_tm);
  78 }
  79
  80 static int prog_fd_by_tag(unsigned char *tag)
  81 {
  82         unsigned int id = 0;
  83         int err;
  84         int fd;
  85
  86         while (true) {
  87                 struct bpf_prog_info info = {};
  88                 __u32 len = sizeof(info);
  89
  90                 err = bpf_prog_get_next_id(id, &id);
  91                 if (err) {
  92                         p_err("%s", strerror(errno));
  93                         return -1;
  94                 }
  95
  96                 fd = bpf_prog_get_fd_by_id(id);
  97                 if (fd < 0) {
  98                         p_err("can't get prog by id (%u): %s",
  99                               id, strerror(errno));
 100                         return -1;
 101                 }
 102
 103                 err = bpf_obj_get_info_by_fd(fd, &info, &len);
 104                 if (err) {
 105                         p_err("can't get prog info (%u): %s",
 106                               id, strerror(errno));
 107                         close(fd);
 108                         return -1;
 109                 }
 110
 111                 if (!memcmp(tag, info.tag, BPF_TAG_SIZE))
 112                         return fd;
 113
 114                 close(fd);
 115         }
 116 }
 117
 118 int prog_parse_fd(int *argc, char ***argv)
 119 {
 120         int fd;
 121
 122         if (is_prefix(**argv, "id")) {
 123                 unsigned int id;
 124                 char *endptr;
 125
 126                 NEXT_ARGP();
 127
 128                 id = strtoul(**argv, &endptr, 0);
 129                 if (*endptr) {
 130                         p_err("can't parse %s as ID", **argv);
 131                         return -1;
 132                 }
 133                 NEXT_ARGP();
 134
 135                 fd = bpf_prog_get_fd_by_id(id);
 136                 if (fd < 0)
 137                         p_err("get by id (%u): %s", id, strerror(errno));
 138                 return fd;
 139         } else if (is_prefix(**argv, "tag")) {
 140                 unsigned char tag[BPF_TAG_SIZE];
 141
 142                 NEXT_ARGP();
 143
 144                 if (sscanf(**argv, BPF_TAG_FMT, tag, tag + 1, tag + 2,
 145                            tag + 3, tag + 4, tag + 5, tag + 6, tag + 7)
 146                     != BPF_TAG_SIZE) {
 147                         p_err("can't parse tag");
 148                         return -1;
 149                 }
 150                 NEXT_ARGP();
 151
 152                 return prog_fd_by_tag(tag);
 153         } else if (is_prefix(**argv, "pinned")) {
 154                 char *path;
 155
 156                 NEXT_ARGP();
 157
 158                 path = **argv;
 159                 NEXT_ARGP();
 160
 161                 return open_obj_pinned_any(path, BPF_OBJ_PROG);
 162         }
 163
 164         p_err("expected 'id', 'tag' or 'pinned', got: '%s'?", **argv);
 165         return -1;
 166 }
 167
 168 static void show_prog_maps(int fd, u32 num_maps)
 169 {
 170         struct bpf_prog_info info = {};
 171         __u32 len = sizeof(info);
 172         __u32 map_ids[num_maps];
 173         unsigned int i;
 174         int err;
 175
 176         info.nr_map_ids = num_maps;
 177         info.map_ids = ptr_to_u64(map_ids);
 178
 179         err = bpf_obj_get_info_by_fd(fd, &info, &len);
 180         if (err || !info.nr_map_ids)
 181                 return;
 182
 183         if (json_output) {
 184                 jsonw_name(json_wtr, "map_ids");
 185                 jsonw_start_array(json_wtr);
 186                 for (i = 0; i < info.nr_map_ids; i++)
 187                         jsonw_uint(json_wtr, map_ids[i]);
 188                 jsonw_end_array(json_wtr);
 189         } else {
 190                 printf("  map_ids ");
 191                 for (i = 0; i < info.nr_map_ids; i++)
 192                         printf("%u%s", map_ids[i],
 193                                i == info.nr_map_ids - 1 ? "" : ",");
 194         }
 195 }
 196
 197 static void print_prog_json(struct bpf_prog_info *info, int fd)
 198 {
 199         char *memlock;
 200
 201         jsonw_start_object(json_wtr);
 202         jsonw_uint_field(json_wtr, "id", info->id);
 203         if (info->type < ARRAY_SIZE(prog_type_name))
 204                 jsonw_string_field(json_wtr, "type",
 205                                    prog_type_name[info->type]);
 206         else
 207                 jsonw_uint_field(json_wtr, "type", info->type);
 208
 209         if (*info->name)
 210                 jsonw_string_field(json_wtr, "name", info->name);
 211
 212         jsonw_name(json_wtr, "tag");
 213         jsonw_printf(json_wtr, "\"" BPF_TAG_FMT "\"",
 214                      info->tag[0], info->tag[1], info->tag[2], info->tag[3],
 215                      info->tag[4], info->tag[5], info->tag[6], info->tag[7]);
 216
 217         jsonw_bool_field(json_wtr, "gpl_compatible", info->gpl_compatible);
 218         if (info->run_time_ns) {
 219                 jsonw_uint_field(json_wtr, "run_time_ns", info->run_time_ns);
 220                 jsonw_uint_field(json_wtr, "run_cnt", info->run_cnt);
 221         }
 222
 223         print_dev_json(info->ifindex, info->netns_dev, info->netns_ino);
 224
 225         if (info->load_time) {
 226                 char buf[32];
 227
 228                 print_boot_time(info->load_time, buf, sizeof(buf));
 229
 230                 /* Piggy back on load_time, since 0 uid is a valid one */
 231                 jsonw_name(json_wtr, "loaded_at");
 232                 jsonw_printf(json_wtr, "%s", buf);
 233                 jsonw_uint_field(json_wtr, "uid", info->created_by_uid);
 234         }
 235
 236         jsonw_uint_field(json_wtr, "bytes_xlated", info->xlated_prog_len);
 237
 238         if (info->jited_prog_len) {
 239                 jsonw_bool_field(json_wtr, "jited", true);
 240                 jsonw_uint_field(json_wtr, "bytes_jited", info->jited_prog_len);
 241         } else {
 242                 jsonw_bool_field(json_wtr, "jited", false);
 243         }
 244
 245         memlock = get_fdinfo(fd, "memlock");
 246         if (memlock)
 247                 jsonw_int_field(json_wtr, "bytes_memlock", atoi(memlock));
 248         free(memlock);
 249
 250         if (info->nr_map_ids)
 251                 show_prog_maps(fd, info->nr_map_ids);
 252
 253         if (info->btf_id)
 254                 jsonw_int_field(json_wtr, "btf_id", info->btf_id);
 255
 256         if (!hash_empty(prog_table.table)) {
 257                 struct pinned_obj *obj;
 258
 259                 jsonw_name(json_wtr, "pinned");
 260                 jsonw_start_array(json_wtr);
 261                 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
 262                         if (obj->id == info->id)
 263                                 jsonw_string(json_wtr, obj->path);
 264                 }
 265                 jsonw_end_array(json_wtr);
 266         }
 267
 268         jsonw_end_object(json_wtr);
 269 }
 270
 271 static void print_prog_plain(struct bpf_prog_info *info, int fd)
 272 {
 273         char *memlock;
 274
 275         printf("%u: ", info->id);
 276         if (info->type < ARRAY_SIZE(prog_type_name))
 277                 printf("%s  ", prog_type_name[info->type]);
 278         else
 279                 printf("type %u  ", info->type);
 280
 281         if (*info->name)
 282                 printf("name %s  ", info->name);
 283
 284         printf("tag ");
 285         fprint_hex(stdout, info->tag, BPF_TAG_SIZE, "");
 286         print_dev_plain(info->ifindex, info->netns_dev, info->netns_ino);
 287         printf("%s", info->gpl_compatible ? "  gpl" : "");
 288         if (info->run_time_ns)
 289                 printf(" run_time_ns %lld run_cnt %lld",
 290                        info->run_time_ns, info->run_cnt);
 291         printf("\n");
 292
 293         if (info->load_time) {
 294                 char buf[32];
 295
 296                 print_boot_time(info->load_time, buf, sizeof(buf));
 297
 298                 /* Piggy back on load_time, since 0 uid is a valid one */
 299                 printf("\tloaded_at %s  uid %u\n", buf, info->created_by_uid);
 300         }
 301
 302         printf("\txlated %uB", info->xlated_prog_len);
 303
 304         if (info->jited_prog_len)
 305                 printf("  jited %uB", info->jited_prog_len);
 306         else
 307                 printf("  not jited");
 308
 309         memlock = get_fdinfo(fd, "memlock");
 310         if (memlock)
 311                 printf("  memlock %sB", memlock);
 312         free(memlock);
 313
 314         if (info->nr_map_ids)
 315                 show_prog_maps(fd, info->nr_map_ids);
 316
 317         if (!hash_empty(prog_table.table)) {
 318                 struct pinned_obj *obj;
 319
 320                 hash_for_each_possible(prog_table.table, obj, hash, info->id) {
 321                         if (obj->id == info->id)
 322                                 printf("\n\tpinned %s", obj->path);
 323                 }
 324         }
 325
 326         if (info->btf_id)
 327                 printf("\n\tbtf_id %d", info->btf_id);
 328
 329         printf("\n");
 330 }
 331
 332 static int show_prog(int fd)
 333 {
 334         struct bpf_prog_info info = {};
 335         __u32 len = sizeof(info);
 336         int err;
 337
 338         err = bpf_obj_get_info_by_fd(fd, &info, &len);
 339         if (err) {
 340                 p_err("can't get prog info: %s", strerror(errno));
 341                 return -1;
 342         }
 343
 344         if (json_output)
 345                 print_prog_json(&info, fd);
 346         else
 347                 print_prog_plain(&info, fd);
 348
 349         return 0;
 350 }
 351
 352 static int do_show(int argc, char **argv)
 353 {
 354         __u32 id = 0;
 355         int err;
 356         int fd;
 357
 358         if (show_pinned)
 359                 build_pinned_obj_table(&prog_table, BPF_OBJ_PROG);
 360
 361         if (argc == 2) {
 362                 fd = prog_parse_fd(&argc, &argv);
 363                 if (fd < 0)
 364                         return -1;
 365
 366                 err = show_prog(fd);
 367                 close(fd);
 368                 return err;
 369         }
 370
 371         if (argc)
 372                 return BAD_ARG();
 373
 374         if (json_output)
 375                 jsonw_start_array(json_wtr);
 376         while (true) {
 377                 err = bpf_prog_get_next_id(id, &id);
 378                 if (err) {
 379                         if (errno == ENOENT) {
 380                                 err = 0;
 381                                 break;
 382                         }
 383                         p_err("can't get next program: %s%s", strerror(errno),
 384                               errno == EINVAL ? " -- kernel too old?" : "");
 385                         err = -1;
 386                         break;
 387                 }
 388
 389                 fd = bpf_prog_get_fd_by_id(id);
 390                 if (fd < 0) {
 391                         if (errno == ENOENT)
 392                                 continue;
 393                         p_err("can't get prog by id (%u): %s",
 394                               id, strerror(errno));
 395                         err = -1;
 396                         break;
 397                 }
 398
 399                 err = show_prog(fd);
 400                 close(fd);
 401                 if (err)
 402                         break;
 403         }
 404
 405         if (json_output)
 406                 jsonw_end_array(json_wtr);
 407
 408         return err;
 409 }
 410
 411 static int do_dump(int argc, char **argv)
 412 {
 413         struct bpf_prog_info_linear *info_linear;
 414         struct bpf_prog_linfo *prog_linfo = NULL;
 415         enum {DUMP_JITED, DUMP_XLATED} mode;
 416         const char *disasm_opt = NULL;
 417         struct bpf_prog_info *info;
 418         struct dump_data dd = {};
 419         void *func_info = NULL;
 420         struct btf *btf = NULL;
 421         char *filepath = NULL;
 422         bool opcodes = false;
 423         bool visual = false;
 424         char func_sig[1024];
 425         unsigned char *buf;
 426         bool linum = false;
 427         __u32 member_len;
 428         __u64 arrays;
 429         ssize_t n;
 430         int fd;
 431
 432         if (is_prefix(*argv, "jited")) {
 433                 if (disasm_init())
 434                         return -1;
 435                 mode = DUMP_JITED;
 436         } else if (is_prefix(*argv, "xlated")) {
 437                 mode = DUMP_XLATED;
 438         } else {
 439                 p_err("expected 'xlated' or 'jited', got: %s", *argv);
 440                 return -1;
 441         }
 442         NEXT_ARG();
 443
 444         if (argc < 2)
 445                 usage();
 446
 447         fd = prog_parse_fd(&argc, &argv);
 448         if (fd < 0)
 449                 return -1;
 450
 451         if (is_prefix(*argv, "file")) {
 452                 NEXT_ARG();
 453                 if (!argc) {
 454                         p_err("expected file path");
 455                         return -1;
 456                 }
 457
 458                 filepath = *argv;
 459                 NEXT_ARG();
 460         } else if (is_prefix(*argv, "opcodes")) {
 461                 opcodes = true;
 462                 NEXT_ARG();
 463         } else if (is_prefix(*argv, "visual")) {
 464                 visual = true;
 465                 NEXT_ARG();
 466         } else if (is_prefix(*argv, "linum")) {
 467                 linum = true;
 468                 NEXT_ARG();
 469         }
 470
 471         if (argc) {
 472                 usage();
 473                 return -1;
 474         }
 475
 476         if (mode == DUMP_JITED)
 477                 arrays = 1UL << BPF_PROG_INFO_JITED_INSNS;
 478         else
 479                 arrays = 1UL << BPF_PROG_INFO_XLATED_INSNS;
 480
 481         arrays |= 1UL << BPF_PROG_INFO_JITED_KSYMS;
 482         arrays |= 1UL << BPF_PROG_INFO_JITED_FUNC_LENS;
 483         arrays |= 1UL << BPF_PROG_INFO_FUNC_INFO;
 484         arrays |= 1UL << BPF_PROG_INFO_LINE_INFO;
 485         arrays |= 1UL << BPF_PROG_INFO_JITED_LINE_INFO;
 486
 487         info_linear = bpf_program__get_prog_info_linear(fd, arrays);
 488         close(fd);
 489         if (IS_ERR_OR_NULL(info_linear)) {
 490                 p_err("can't get prog info: %s", strerror(errno));
 491                 return -1;
 492         }
 493
 494         info = &info_linear->info;
 495         if (mode == DUMP_JITED) {
 496                 if (info->jited_prog_len == 0 || !info->jited_prog_insns) {
 497                         p_info("no instructions returned");
 498                         goto err_free;
 499                 }
 500                 buf = (unsigned char *)(info->jited_prog_insns);
 501                 member_len = info->jited_prog_len;
 502         } else {        /* DUMP_XLATED */
 503                 if (info->xlated_prog_len == 0) {
 504                         p_err("error retrieving insn dump: kernel.kptr_restrict set?");
 505                         goto err_free;
 506                 }
 507                 buf = (unsigned char *)info->xlated_prog_insns;
 508                 member_len = info->xlated_prog_len;
 509         }
 510
 511         if (info->btf_id && btf__get_from_id(info->btf_id, &btf)) {
 512                 p_err("failed to get btf");
 513                 goto err_free;
 514         }
 515
 516         func_info = (void *)info->func_info;
 517
 518         if (info->nr_line_info) {
 519                 prog_linfo = bpf_prog_linfo__new(info);
 520                 if (!prog_linfo)
 521                         p_info("error in processing bpf_line_info.  continue without it.");
 522         }
 523
 524         if (filepath) {
 525                 fd = open(filepath, O_WRONLY | O_CREAT | O_TRUNC, 0600);
 526                 if (fd < 0) {
 527                         p_err("can't open file %s: %s", filepath,
 528                               strerror(errno));
 529                         goto err_free;
 530                 }
 531
 532                 n = write(fd, buf, member_len);
 533                 close(fd);
 534                 if (n != member_len) {
 535                         p_err("error writing output file: %s",
 536                               n < 0 ? strerror(errno) : "short write");
 537                         goto err_free;
 538                 }
 539
 540                 if (json_output)
 541                         jsonw_null(json_wtr);
 542         } else if (mode == DUMP_JITED) {
 543                 const char *name = NULL;
 544
 545                 if (info->ifindex) {
 546                         name = ifindex_to_bfd_params(info->ifindex,
 547                                                      info->netns_dev,
 548                                                      info->netns_ino,
 549                                                      &disasm_opt);
 550                         if (!name)
 551                                 goto err_free;
 552                 }
 553
 554                 if (info->nr_jited_func_lens && info->jited_func_lens) {
 555                         struct kernel_sym *sym = NULL;
 556                         struct bpf_func_info *record;
 557                         char sym_name[SYM_MAX_NAME];
 558                         unsigned char *img = buf;
 559                         __u64 *ksyms = NULL;
 560                         __u32 *lens;
 561                         __u32 i;
 562                         if (info->nr_jited_ksyms) {
 563                                 kernel_syms_load(&dd);
 564                                 ksyms = (__u64 *) info->jited_ksyms;
 565                         }
 566
 567                         if (json_output)
 568                                 jsonw_start_array(json_wtr);
 569
 570                         lens = (__u32 *) info->jited_func_lens;
 571                         for (i = 0; i < info->nr_jited_func_lens; i++) {
 572                                 if (ksyms) {
 573                                         sym = kernel_syms_search(&dd, ksyms[i]);
 574                                         if (sym)
 575                                                 sprintf(sym_name, "%s", sym->name);
 576                                         else
 577                                                 sprintf(sym_name, "0x%016llx", ksyms[i]);
 578                                 } else {
 579                                         strcpy(sym_name, "unknown");
 580                                 }
 581
 582                                 if (func_info) {
 583                                         record = func_info + i * info->func_info_rec_size;
 584                                         btf_dumper_type_only(btf, record->type_id,
 585                                                              func_sig,
 586                                                              sizeof(func_sig));
 587                                 }
 588
 589                                 if (json_output) {
 590                                         jsonw_start_object(json_wtr);
 591                                         if (func_info && func_sig[0] != '\0') {
 592                                                 jsonw_name(json_wtr, "proto");
 593                                                 jsonw_string(json_wtr, func_sig);
 594                                         }
 595                                         jsonw_name(json_wtr, "name");
 596                                         jsonw_string(json_wtr, sym_name);
 597                                         jsonw_name(json_wtr, "insns");
 598                                 } else {
 599                                         if (func_info && func_sig[0] != '\0')
 600                                                 printf("%s:\n", func_sig);
 601                                         printf("%s:\n", sym_name);
 602                                 }
 603
 604                                 disasm_print_insn(img, lens[i], opcodes,
 605                                                   name, disasm_opt, btf,
 606                                                   prog_linfo, ksyms[i], i,
 607                                                   linum);
 608
 609                                 img += lens[i];
 610
 611                                 if (json_output)
 612                                         jsonw_end_object(json_wtr);
 613                                 else
 614                                         printf("\n");
 615                         }
 616
 617                         if (json_output)
 618                                 jsonw_end_array(json_wtr);
 619                 } else {
 620                         disasm_print_insn(buf, member_len, opcodes, name,
 621                                           disasm_opt, btf, NULL, 0, 0, false);
 622                 }
 623         } else if (visual) {
 624                 if (json_output)
 625                         jsonw_null(json_wtr);
 626                 else
 627                         dump_xlated_cfg(buf, member_len);
 628         } else {
 629                 kernel_syms_load(&dd);
 630                 dd.nr_jited_ksyms = info->nr_jited_ksyms;
 631                 dd.jited_ksyms = (__u64 *) info->jited_ksyms;
 632                 dd.btf = btf;
 633                 dd.func_info = func_info;
 634                 dd.finfo_rec_size = info->func_info_rec_size;
 635                 dd.prog_linfo = prog_linfo;
 636
 637                 if (json_output)
 638                         dump_xlated_json(&dd, buf, member_len, opcodes,
 639                                          linum);
 640                 else
 641                         dump_xlated_plain(&dd, buf, member_len, opcodes,
 642                                           linum);
 643                 kernel_syms_destroy(&dd);
 644         }
 645
 646         free(info_linear);
 647         return 0;
 648
 649 err_free:
 650         free(info_linear);
 651         return -1;
 652 }
 653
 654 static int do_pin(int argc, char **argv)
 655 {
 656         int err;
 657
 658         err = do_pin_any(argc, argv, bpf_prog_get_fd_by_id);
 659         if (!err && json_output)
 660                 jsonw_null(json_wtr);
 661         return err;
 662 }
 663
 664 struct map_replace {
 665         int idx;
 666         int fd;
 667         char *name;
 668 };
 669
 670 static int map_replace_compar(const void *p1, const void *p2)
 671 {
 672         const struct map_replace *a = p1, *b = p2;
 673
 674         return a->idx - b->idx;
 675 }
 676
 677 static int parse_attach_detach_args(int argc, char **argv, int *progfd,
 678                                     enum bpf_attach_type *attach_type,
 679                                     int *mapfd)
 680 {
 681         if (!REQ_ARGS(3))
 682                 return -EINVAL;
 683
 684         *progfd = prog_parse_fd(&argc, &argv);
 685         if (*progfd < 0)
 686                 return *progfd;
 687
 688         *attach_type = parse_attach_type(*argv);
 689         if (*attach_type == __MAX_BPF_ATTACH_TYPE) {
 690                 p_err("invalid attach/detach type");
 691                 return -EINVAL;
 692         }
 693
 694         if (*attach_type == BPF_FLOW_DISSECTOR) {
 695                 *mapfd = -1;
 696                 return 0;
 697         }
 698
 699         NEXT_ARG();
 700         if (!REQ_ARGS(2))
 701                 return -EINVAL;
 702
 703         *mapfd = map_parse_fd(&argc, &argv);
 704         if (*mapfd < 0)
 705                 return *mapfd;
 706
 707         return 0;
 708 }
 709
 710 static int do_attach(int argc, char **argv)
 711 {
 712         enum bpf_attach_type attach_type;
 713         int err, progfd;
 714         int mapfd;
 715
 716         err = parse_attach_detach_args(argc, argv,
 717                                        &progfd, &attach_type, &mapfd);
 718         if (err)
 719                 return err;
 720
 721         err = bpf_prog_attach(progfd, mapfd, attach_type, 0);
 722         if (err) {
 723                 p_err("failed prog attach to map");
 724                 return -EINVAL;
 725         }
 726
 727         if (json_output)
 728                 jsonw_null(json_wtr);
 729         return 0;
 730 }
 731
 732 static int do_detach(int argc, char **argv)
 733 {
 734         enum bpf_attach_type attach_type;
 735         int err, progfd;
 736         int mapfd;
 737
 738         err = parse_attach_detach_args(argc, argv,
 739                                        &progfd, &attach_type, &mapfd);
 740         if (err)
 741                 return err;
 742
 743         err = bpf_prog_detach2(progfd, mapfd, attach_type);
 744         if (err) {
 745                 p_err("failed prog detach from map");
 746                 return -EINVAL;
 747         }
 748
 749         if (json_output)
 750                 jsonw_null(json_wtr);
 751         return 0;
 752 }
 753
 754 static int check_single_stdin(char *file_data_in, char *file_ctx_in)
 755 {
 756         if (file_data_in && file_ctx_in &&
 757             !strcmp(file_data_in, "-") && !strcmp(file_ctx_in, "-")) {
 758                 p_err("cannot use standard input for both data_in and ctx_in");
 759                 return -1;
 760         }
 761
 762         return 0;
 763 }
 764
 765 static int get_run_data(const char *fname, void **data_ptr, unsigned int *size)
 766 {
 767         size_t block_size = 256;
 768         size_t buf_size = block_size;
 769         size_t nb_read = 0;
 770         void *tmp;
 771         FILE *f;
 772
 773         if (!fname) {
 774                 *data_ptr = NULL;
 775                 *size = 0;
 776                 return 0;
 777         }
 778
 779         if (!strcmp(fname, "-"))
 780                 f = stdin;
 781         else
 782                 f = fopen(fname, "r");
 783         if (!f) {
 784                 p_err("failed to open %s: %s", fname, strerror(errno));
 785                 return -1;
 786         }
 787
 788         *data_ptr = malloc(block_size);
 789         if (!*data_ptr) {
 790                 p_err("failed to allocate memory for data_in/ctx_in: %s",
 791                       strerror(errno));
 792                 goto err_fclose;
 793         }
 794
 795         while ((nb_read += fread(*data_ptr + nb_read, 1, block_size, f))) {
 796                 if (feof(f))
 797                         break;
 798                 if (ferror(f)) {
 799                         p_err("failed to read data_in/ctx_in from %s: %s",
 800                               fname, strerror(errno));
 801                         goto err_free;
 802                 }
 803                 if (nb_read > buf_size - block_size) {
 804                         if (buf_size == UINT32_MAX) {
 805                                 p_err("data_in/ctx_in is too long (max: %d)",
 806                                       UINT32_MAX);
 807                                 goto err_free;
 808                         }
 809                         /* No space for fread()-ing next chunk; realloc() */
 810                         buf_size *= 2;
 811                         tmp = realloc(*data_ptr, buf_size);
 812                         if (!tmp) {
 813                                 p_err("failed to reallocate data_in/ctx_in: %s",
 814                                       strerror(errno));
 815                                 goto err_free;
 816                         }
 817                         *data_ptr = tmp;
 818                 }
 819         }
 820         if (f != stdin)
 821                 fclose(f);
 822
 823         *size = nb_read;
 824         return 0;
 825
 826 err_free:
 827         free(*data_ptr);
 828         *data_ptr = NULL;
 829 err_fclose:
 830         if (f != stdin)
 831                 fclose(f);
 832         return -1;
 833 }
 834
 835 static void hex_print(void *data, unsigned int size, FILE *f)
 836 {
 837         size_t i, j;
 838         char c;
 839
 840         for (i = 0; i < size; i += 16) {
 841                 /* Row offset */
 842                 fprintf(f, "%07zx\t", i);
 843
 844                 /* Hexadecimal values */
 845                 for (j = i; j < i + 16 && j < size; j++)
 846                         fprintf(f, "%02x%s", *(uint8_t *)(data + j),
 847                                 j % 2 ? " " : "");
 848                 for (; j < i + 16; j++)
 849                         fprintf(f, "  %s", j % 2 ? " " : "");
 850
 851                 /* ASCII values (if relevant), '.' otherwise */
 852                 fprintf(f, "| ");
 853                 for (j = i; j < i + 16 && j < size; j++) {
 854                         c = *(char *)(data + j);
 855                         if (c < ' ' || c > '~')
 856                                 c = '.';
 857                         fprintf(f, "%c%s", c, j == i + 7 ? " " : "");
 858                 }
 859
 860                 fprintf(f, "\n");
 861         }
 862 }
 863
 864 static int
 865 print_run_output(void *data, unsigned int size, const char *fname,
 866                  const char *json_key)
 867 {
 868         size_t nb_written;
 869         FILE *f;
 870
 871         if (!fname)
 872                 return 0;
 873
 874         if (!strcmp(fname, "-")) {
 875                 f = stdout;
 876                 if (json_output) {
 877                         jsonw_name(json_wtr, json_key);
 878                         print_data_json(data, size);
 879                 } else {
 880                         hex_print(data, size, f);
 881                 }
 882                 return 0;
 883         }
 884
 885         f = fopen(fname, "w");
 886         if (!f) {
 887                 p_err("failed to open %s: %s", fname, strerror(errno));
 888                 return -1;
 889         }
 890
 891         nb_written = fwrite(data, 1, size, f);
 892         fclose(f);
 893         if (nb_written != size) {
 894                 p_err("failed to write output data/ctx: %s", strerror(errno));
 895                 return -1;
 896         }
 897
 898         return 0;
 899 }
 900
 901 static int alloc_run_data(void **data_ptr, unsigned int size_out)
 902 {
 903         *data_ptr = calloc(size_out, 1);
 904         if (!*data_ptr) {
 905                 p_err("failed to allocate memory for output data/ctx: %s",
 906                       strerror(errno));
 907                 return -1;
 908         }
 909
 910         return 0;
 911 }
 912
 913 static int do_run(int argc, char **argv)
 914 {
 915         char *data_fname_in = NULL, *data_fname_out = NULL;
 916         char *ctx_fname_in = NULL, *ctx_fname_out = NULL;
 917         struct bpf_prog_test_run_attr test_attr = {0};
 918         const unsigned int default_size = SZ_32K;
 919         void *data_in = NULL, *data_out = NULL;
 920         void *ctx_in = NULL, *ctx_out = NULL;
 921         unsigned int repeat = 1;
 922         int fd, err;
 923
 924         if (!REQ_ARGS(4))
 925                 return -1;
 926
 927         fd = prog_parse_fd(&argc, &argv);
 928         if (fd < 0)
 929                 return -1;
 930
 931         while (argc) {
 932                 if (detect_common_prefix(*argv, "data_in", "data_out",
 933                                          "data_size_out", NULL))
 934                         return -1;
 935                 if (detect_common_prefix(*argv, "ctx_in", "ctx_out",
 936                                          "ctx_size_out", NULL))
 937                         return -1;
 938
 939                 if (is_prefix(*argv, "data_in")) {
 940                         NEXT_ARG();
 941                         if (!REQ_ARGS(1))
 942                                 return -1;
 943
 944                         data_fname_in = GET_ARG();
 945                         if (check_single_stdin(data_fname_in, ctx_fname_in))
 946                                 return -1;
 947                 } else if (is_prefix(*argv, "data_out")) {
 948                         NEXT_ARG();
 949                         if (!REQ_ARGS(1))
 950                                 return -1;
 951
 952                         data_fname_out = GET_ARG();
 953                 } else if (is_prefix(*argv, "data_size_out")) {
 954                         char *endptr;
 955
 956                         NEXT_ARG();
 957                         if (!REQ_ARGS(1))
 958                                 return -1;
 959
 960                         test_attr.data_size_out = strtoul(*argv, &endptr, 0);
 961                         if (*endptr) {
 962                                 p_err("can't parse %s as output data size",
 963                                       *argv);
 964                                 return -1;
 965                         }
 966                         NEXT_ARG();
 967                 } else if (is_prefix(*argv, "ctx_in")) {
 968                         NEXT_ARG();
 969                         if (!REQ_ARGS(1))
 970                                 return -1;
 971
 972                         ctx_fname_in = GET_ARG();
 973                         if (check_single_stdin(data_fname_in, ctx_fname_in))
 974                                 return -1;
 975                 } else if (is_prefix(*argv, "ctx_out")) {
 976                         NEXT_ARG();
 977                         if (!REQ_ARGS(1))
 978                                 return -1;
 979
 980                         ctx_fname_out = GET_ARG();
 981                 } else if (is_prefix(*argv, "ctx_size_out")) {
 982                         char *endptr;
 983
 984                         NEXT_ARG();
 985                         if (!REQ_ARGS(1))
 986                                 return -1;
 987
 988                         test_attr.ctx_size_out = strtoul(*argv, &endptr, 0);
 989                         if (*endptr) {
 990                                 p_err("can't parse %s as output context size",
 991                                       *argv);
 992                                 return -1;
 993                         }
 994                         NEXT_ARG();
 995                 } else if (is_prefix(*argv, "repeat")) {
 996                         char *endptr;
 997
 998                         NEXT_ARG();
 999                         if (!REQ_ARGS(1))
1000                                 return -1;
1001
1002                         repeat = strtoul(*argv, &endptr, 0);
1003                         if (*endptr) {
1004                                 p_err("can't parse %s as repeat number",
1005                                       *argv);
1006                                 return -1;
1007                         }
1008                         NEXT_ARG();
1009                 } else {
1010                         p_err("expected no more arguments, 'data_in', 'data_out', 'data_size_out', 'ctx_in', 'ctx_out', 'ctx_size_out' or 'repeat', got: '%s'?",
1011                               *argv);
1012                         return -1;
1013                 }
1014         }
1015
1016         err = get_run_data(data_fname_in, &data_in, &test_attr.data_size_in);
1017         if (err)
1018                 return -1;
1019
1020         if (data_in) {
1021                 if (!test_attr.data_size_out)
1022                         test_attr.data_size_out = default_size;
1023                 err = alloc_run_data(&data_out, test_attr.data_size_out);
1024                 if (err)
1025                         goto free_data_in;
1026         }
1027
1028         err = get_run_data(ctx_fname_in, &ctx_in, &test_attr.ctx_size_in);
1029         if (err)
1030                 goto free_data_out;
1031
1032         if (ctx_in) {
1033                 if (!test_attr.ctx_size_out)
1034                         test_attr.ctx_size_out = default_size;
1035                 err = alloc_run_data(&ctx_out, test_attr.ctx_size_out);
1036                 if (err)
1037                         goto free_ctx_in;
1038         }
1039
1040         test_attr.prog_fd       = fd;
1041         test_attr.repeat        = repeat;
1042         test_attr.data_in       = data_in;
1043         test_attr.data_out      = data_out;
1044         test_attr.ctx_in        = ctx_in;
1045         test_attr.ctx_out       = ctx_out;
1046
1047         err = bpf_prog_test_run_xattr(&test_attr);
1048         if (err) {
1049                 p_err("failed to run program: %s", strerror(errno));
1050                 goto free_ctx_out;
1051         }
1052
1053         err = 0;
1054
1055         if (json_output)
1056                 jsonw_start_object(json_wtr);   /* root */
1057
1058         /* Do not exit on errors occurring when printing output data/context,
1059          * we still want to print return value and duration for program run.
1060          */
1061         if (test_attr.data_size_out)
1062                 err += print_run_output(test_attr.data_out,
1063                                         test_attr.data_size_out,
1064                                         data_fname_out, "data_out");
1065         if (test_attr.ctx_size_out)
1066                 err += print_run_output(test_attr.ctx_out,
1067                                         test_attr.ctx_size_out,
1068                                         ctx_fname_out, "ctx_out");
1069
1070         if (json_output) {
1071                 jsonw_uint_field(json_wtr, "retval", test_attr.retval);
1072                 jsonw_uint_field(json_wtr, "duration", test_attr.duration);
1073                 jsonw_end_object(json_wtr);     /* root */
1074         } else {
1075                 fprintf(stdout, "Return value: %u, duration%s: %uns\n",
1076                         test_attr.retval,
1077                         repeat > 1 ? " (average)" : "", test_attr.duration);
1078         }
1079
1080 free_ctx_out:
1081         free(ctx_out);
1082 free_ctx_in:
1083         free(ctx_in);
1084 free_data_out:
1085         free(data_out);
1086 free_data_in:
1087         free(data_in);
1088
1089         return err;
1090 }
1091
1092 static int load_with_options(int argc, char **argv, bool first_prog_only)
1093 {
1094         enum bpf_prog_type common_prog_type = BPF_PROG_TYPE_UNSPEC;
1095         DECLARE_LIBBPF_OPTS(bpf_object_open_opts, open_opts,
1096                 .relaxed_maps = relaxed_maps,
1097         );
1098         struct bpf_object_load_attr load_attr = { 0 };
1099         enum bpf_attach_type expected_attach_type;
1100         struct map_replace *map_replace = NULL;
1101         struct bpf_program *prog = NULL, *pos;
1102         unsigned int old_map_fds = 0;
1103         const char *pinmaps = NULL;
1104         struct bpf_object *obj;
1105         struct bpf_map *map;
1106         const char *pinfile;
1107         unsigned int i, j;
1108         __u32 ifindex = 0;
1109         const char *file;
1110         int idx, err;
1111
1112
1113         if (!REQ_ARGS(2))
1114                 return -1;
1115         file = GET_ARG();
1116         pinfile = GET_ARG();
1117
1118         while (argc) {
1119                 if (is_prefix(*argv, "type")) {
1120                         char *type;
1121
1122                         NEXT_ARG();
1123
1124                         if (common_prog_type != BPF_PROG_TYPE_UNSPEC) {
1125                                 p_err("program type already specified");
1126                                 goto err_free_reuse_maps;
1127                         }
1128                         if (!REQ_ARGS(1))
1129                                 goto err_free_reuse_maps;
1130
1131                         /* Put a '/' at the end of type to appease libbpf */
1132                         type = malloc(strlen(*argv) + 2);
1133                         if (!type) {
1134                                 p_err("mem alloc failed");
1135                                 goto err_free_reuse_maps;
1136                         }
1137                         *type = 0;
1138                         strcat(type, *argv);
1139                         strcat(type, "/");
1140
1141                         err = libbpf_prog_type_by_name(type, &common_prog_type,
1142                                                        &expected_attach_type);
1143                         free(type);
1144                         if (err < 0)
1145                                 goto err_free_reuse_maps;
1146
1147                         NEXT_ARG();
1148                 } else if (is_prefix(*argv, "map")) {
1149                         void *new_map_replace;
1150                         char *endptr, *name;
1151                         int fd;
1152
1153                         NEXT_ARG();
1154
1155                         if (!REQ_ARGS(4))
1156                                 goto err_free_reuse_maps;
1157
1158                         if (is_prefix(*argv, "idx")) {
1159                                 NEXT_ARG();
1160
1161                                 idx = strtoul(*argv, &endptr, 0);
1162                                 if (*endptr) {
1163                                         p_err("can't parse %s as IDX", *argv);
1164                                         goto err_free_reuse_maps;
1165                                 }
1166                                 name = NULL;
1167                         } else if (is_prefix(*argv, "name")) {
1168                                 NEXT_ARG();
1169
1170                                 name = *argv;
1171                                 idx = -1;
1172                         } else {
1173                                 p_err("expected 'idx' or 'name', got: '%s'?",
1174                                       *argv);
1175                                 goto err_free_reuse_maps;
1176                         }
1177                         NEXT_ARG();
1178
1179                         fd = map_parse_fd(&argc, &argv);
1180                         if (fd < 0)
1181                                 goto err_free_reuse_maps;
1182
1183                         new_map_replace = reallocarray(map_replace,
1184                                                        old_map_fds + 1,
1185                                                        sizeof(*map_replace));
1186                         if (!new_map_replace) {
1187                                 p_err("mem alloc failed");
1188                                 goto err_free_reuse_maps;
1189                         }
1190                         map_replace = new_map_replace;
1191
1192                         map_replace[old_map_fds].idx = idx;
1193                         map_replace[old_map_fds].name = name;
1194                         map_replace[old_map_fds].fd = fd;
1195                         old_map_fds++;
1196                 } else if (is_prefix(*argv, "dev")) {
1197                         NEXT_ARG();
1198
1199                         if (ifindex) {
1200                                 p_err("offload device already specified");
1201                                 goto err_free_reuse_maps;
1202                         }
1203                         if (!REQ_ARGS(1))
1204                                 goto err_free_reuse_maps;
1205
1206                         ifindex = if_nametoindex(*argv);
1207                         if (!ifindex) {
1208                                 p_err("unrecognized netdevice '%s': %s",
1209                                       *argv, strerror(errno));
1210                                 goto err_free_reuse_maps;
1211                         }
1212                         NEXT_ARG();
1213                 } else if (is_prefix(*argv, "pinmaps")) {
1214                         NEXT_ARG();
1215
1216                         if (!REQ_ARGS(1))
1217                                 goto err_free_reuse_maps;
1218
1219                         pinmaps = GET_ARG();
1220                 } else {
1221                         p_err("expected no more arguments, 'type', 'map' or 'dev', got: '%s'?",
1222                               *argv);
1223                         goto err_free_reuse_maps;
1224                 }
1225         }
1226
1227         set_max_rlimit();
1228
1229         obj = bpf_object__open_file(file, &open_opts);
1230         if (IS_ERR_OR_NULL(obj)) {
1231                 p_err("failed to open object file");
1232                 goto err_free_reuse_maps;
1233         }
1234
1235         bpf_object__for_each_program(pos, obj) {
1236                 enum bpf_prog_type prog_type = common_prog_type;
1237
1238                 if (prog_type == BPF_PROG_TYPE_UNSPEC) {
1239                         const char *sec_name = bpf_program__title(pos, false);
1240
1241                         err = libbpf_prog_type_by_name(sec_name, &prog_type,
1242                                                        &expected_attach_type);
1243                         if (err < 0)
1244                                 goto err_close_obj;
1245                 }
1246
1247                 bpf_program__set_ifindex(pos, ifindex);
1248                 bpf_program__set_type(pos, prog_type);
1249                 bpf_program__set_expected_attach_type(pos, expected_attach_type);
1250         }
1251
1252         qsort(map_replace, old_map_fds, sizeof(*map_replace),
1253               map_replace_compar);
1254
1255         /* After the sort maps by name will be first on the list, because they
1256          * have idx == -1.  Resolve them.
1257          */
1258         j = 0;
1259         while (j < old_map_fds && map_replace[j].name) {
1260                 i = 0;
1261                 bpf_object__for_each_map(map, obj) {
1262                         if (!strcmp(bpf_map__name(map), map_replace[j].name)) {
1263                                 map_replace[j].idx = i;
1264                                 break;
1265                         }
1266                         i++;
1267                 }
1268                 if (map_replace[j].idx == -1) {
1269                         p_err("unable to find map '%s'", map_replace[j].name);
1270                         goto err_close_obj;
1271                 }
1272                 j++;
1273         }
1274         /* Resort if any names were resolved */
1275         if (j)
1276                 qsort(map_replace, old_map_fds, sizeof(*map_replace),
1277                       map_replace_compar);
1278
1279         /* Set ifindex and name reuse */
1280         j = 0;
1281         idx = 0;
1282         bpf_object__for_each_map(map, obj) {
1283                 if (!bpf_map__is_offload_neutral(map))
1284                         bpf_map__set_ifindex(map, ifindex);
1285
1286                 if (j < old_map_fds && idx == map_replace[j].idx) {
1287                         err = bpf_map__reuse_fd(map, map_replace[j++].fd);
1288                         if (err) {
1289                                 p_err("unable to set up map reuse: %d", err);
1290                                 goto err_close_obj;
1291                         }
1292
1293                         /* Next reuse wants to apply to the same map */
1294                         if (j < old_map_fds && map_replace[j].idx == idx) {
1295                                 p_err("replacement for map idx %d specified more than once",
1296                                       idx);
1297                                 goto err_close_obj;
1298                         }
1299                 }
1300
1301                 idx++;
1302         }
1303         if (j < old_map_fds) {
1304                 p_err("map idx '%d' not used", map_replace[j].idx);
1305                 goto err_close_obj;
1306         }
1307
1308         load_attr.obj = obj;
1309         if (verifier_logs)
1310                 /* log_level1 + log_level2 + stats, but not stable UAPI */
1311                 load_attr.log_level = 1 + 2 + 4;
1312
1313         err = bpf_object__load_xattr(&load_attr);
1314         if (err) {
1315                 p_err("failed to load object file");
1316                 goto err_close_obj;
1317         }
1318
1319         err = mount_bpffs_for_pin(pinfile);
1320         if (err)
1321                 goto err_close_obj;
1322
1323         if (first_prog_only) {
1324                 prog = bpf_program__next(NULL, obj);
1325                 if (!prog) {
1326                         p_err("object file doesn't contain any bpf program");
1327                         goto err_close_obj;
1328                 }
1329
1330                 err = bpf_obj_pin(bpf_program__fd(prog), pinfile);
1331                 if (err) {
1332                         p_err("failed to pin program %s",
1333                               bpf_program__title(prog, false));
1334                         goto err_close_obj;
1335                 }
1336         } else {
1337                 err = bpf_object__pin_programs(obj, pinfile);
1338                 if (err) {
1339                         p_err("failed to pin all programs");
1340                         goto err_close_obj;
1341                 }
1342         }
1343
1344         if (pinmaps) {
1345                 err = bpf_object__pin_maps(obj, pinmaps);
1346                 if (err) {
1347                         p_err("failed to pin all maps");
1348                         goto err_unpin;
1349                 }
1350         }
1351
1352         if (json_output)
1353                 jsonw_null(json_wtr);
1354
1355         bpf_object__close(obj);
1356         for (i = 0; i < old_map_fds; i++)
1357                 close(map_replace[i].fd);
1358         free(map_replace);
1359
1360         return 0;
1361
1362 err_unpin:
1363         if (first_prog_only)
1364                 unlink(pinfile);
1365         else
1366                 bpf_object__unpin_programs(obj, pinfile);
1367 err_close_obj:
1368         bpf_object__close(obj);
1369 err_free_reuse_maps:
1370         for (i = 0; i < old_map_fds; i++)
1371                 close(map_replace[i].fd);
1372         free(map_replace);
1373         return -1;
1374 }
1375
1376 static int do_load(int argc, char **argv)
1377 {
1378         return load_with_options(argc, argv, true);
1379 }
1380
1381 static int do_loadall(int argc, char **argv)
1382 {
1383         return load_with_options(argc, argv, false);
1384 }
1385
1386 static int do_help(int argc, char **argv)
1387 {
1388         if (json_output) {
1389                 jsonw_null(json_wtr);
1390                 return 0;
1391         }
1392
1393         fprintf(stderr,
1394                 "Usage: %s %s { show | list } [PROG]\n"
1395                 "       %s %s dump xlated PROG [{ file FILE | opcodes | visual | linum }]\n"
1396                 "       %s %s dump jited  PROG [{ file FILE | opcodes | linum }]\n"
1397                 "       %s %s pin   PROG FILE\n"
1398                 "       %s %s { load | loadall } OBJ  PATH \\\n"
1399                 "                         [type TYPE] [dev NAME] \\\n"
1400                 "                         [map { idx IDX | name NAME } MAP]\\\n"
1401                 "                         [pinmaps MAP_DIR]\n"
1402                 "       %s %s attach PROG ATTACH_TYPE [MAP]\n"
1403                 "       %s %s detach PROG ATTACH_TYPE [MAP]\n"
1404                 "       %s %s run PROG \\\n"
1405                 "                         data_in FILE \\\n"
1406                 "                         [data_out FILE [data_size_out L]] \\\n"
1407                 "                         [ctx_in FILE [ctx_out FILE [ctx_size_out M]]] \\\n"
1408                 "                         [repeat N]\n"
1409                 "       %s %s tracelog\n"
1410                 "       %s %s help\n"
1411                 "\n"
1412                 "       " HELP_SPEC_MAP "\n"
1413                 "       " HELP_SPEC_PROGRAM "\n"
1414                 "       TYPE := { socket | kprobe | kretprobe | classifier | action |\n"
1415                 "                 tracepoint | raw_tracepoint | xdp | perf_event | cgroup/skb |\n"
1416                 "                 cgroup/sock | cgroup/dev | lwt_in | lwt_out | lwt_xmit |\n"
1417                 "                 lwt_seg6local | sockops | sk_skb | sk_msg | lirc_mode2 |\n"
1418                 "                 sk_reuseport | flow_dissector | cgroup/sysctl |\n"
1419                 "                 cgroup/bind4 | cgroup/bind6 | cgroup/post_bind4 |\n"
1420                 "                 cgroup/post_bind6 | cgroup/connect4 | cgroup/connect6 |\n"
1421                 "                 cgroup/sendmsg4 | cgroup/sendmsg6 | cgroup/recvmsg4 |\n"
1422                 "                 cgroup/recvmsg6 | cgroup/getsockopt |\n"
1423                 "                 cgroup/setsockopt }\n"
1424                 "       ATTACH_TYPE := { msg_verdict | stream_verdict | stream_parser |\n"
1425                 "                        flow_dissector }\n"
1426                 "       " HELP_SPEC_OPTIONS "\n"
1427                 "",
1428                 bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
1429                 bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
1430                 bin_name, argv[-2], bin_name, argv[-2], bin_name, argv[-2],
1431                 bin_name, argv[-2]);
1432
1433         return 0;
1434 }
1435
1436 static const struct cmd cmds[] = {
1437         { "show",       do_show },
1438         { "list",       do_show },
1439         { "help",       do_help },
1440         { "dump",       do_dump },
1441         { "pin",        do_pin },
1442         { "load",       do_load },
1443         { "loadall",    do_loadall },
1444         { "attach",     do_attach },
1445         { "detach",     do_detach },
1446         { "tracelog",   do_tracelog },
1447         { "run",        do_run },
1448         { 0 }
1449 };
1450
1451 int do_prog(int argc, char **argv)
1452 {
1453         return cmd_select(cmds, argc, argv, do_help);
1454 }