1 /* 2 * builtin-trace.c 3 * 4 * Builtin 'trace' command: 5 * 6 * Display a continuously updated trace of any workload, CPU, specific PID, 7 * system wide, etc. Default format is loosely strace like, but any other 8 * event may be specified using --event. 9 * 10 * Copyright (C) 2012, 2013, 2014, 2015 Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com> 11 * 12 * Initially based on the 'trace' prototype by Thomas Gleixner: 13 * 14 * http://lwn.net/Articles/415728/ ("Announcing a new utility: 'trace'") 15 * 16 * Released under the GPL v2. (and only v2, not any later version) 17 */ 18 19 #include <traceevent/event-parse.h> 20 #include <api/fs/tracing_path.h> 21 #include "builtin.h" 22 #include "util/color.h" 23 #include "util/debug.h" 24 #include "util/evlist.h" 25 #include <subcmd/exec-cmd.h> 26 #include "util/machine.h" 27 #include "util/session.h" 28 #include "util/thread.h" 29 #include <subcmd/parse-options.h> 30 #include "util/strlist.h" 31 #include "util/intlist.h" 32 #include "util/thread_map.h" 33 #include "util/stat.h" 34 #include "trace-event.h" 35 #include "util/parse-events.h" 36 #include "util/bpf-loader.h" 37 38 #include <libaudit.h> 39 #include <stdlib.h> 40 #include <sys/mman.h> 41 #include <linux/futex.h> 42 #include <linux/err.h> 43 44 /* For older distros: */ 45 #ifndef MAP_STACK 46 # define MAP_STACK 0x20000 47 #endif 48 49 #ifndef MADV_HWPOISON 50 # define MADV_HWPOISON 100 51 52 #endif 53 54 #ifndef MADV_MERGEABLE 55 # define MADV_MERGEABLE 12 56 #endif 57 58 #ifndef MADV_UNMERGEABLE 59 # define MADV_UNMERGEABLE 13 60 #endif 61 62 #ifndef EFD_SEMAPHORE 63 # define EFD_SEMAPHORE 1 64 #endif 65 66 #ifndef EFD_NONBLOCK 67 # define EFD_NONBLOCK 00004000 68 #endif 69 70 #ifndef EFD_CLOEXEC 71 # define EFD_CLOEXEC 02000000 72 #endif 73 74 #ifndef O_CLOEXEC 75 # define O_CLOEXEC 02000000 76 #endif 77 78 #ifndef SOCK_DCCP 79 # define SOCK_DCCP 6 80 #endif 81 82 #ifndef SOCK_CLOEXEC 83 # define SOCK_CLOEXEC 02000000 84 #endif 85 86 #ifndef SOCK_NONBLOCK 87 # define SOCK_NONBLOCK 00004000 88 #endif 89 90 #ifndef MSG_CMSG_CLOEXEC 91 # define MSG_CMSG_CLOEXEC 0x40000000 92 #endif 93 94 #ifndef PERF_FLAG_FD_NO_GROUP 95 # define PERF_FLAG_FD_NO_GROUP (1UL << 0) 96 #endif 97 98 #ifndef PERF_FLAG_FD_OUTPUT 99 # define PERF_FLAG_FD_OUTPUT (1UL << 1) 100 #endif 101 102 #ifndef PERF_FLAG_PID_CGROUP 103 # define PERF_FLAG_PID_CGROUP (1UL << 2) /* pid=cgroup id, per-cpu mode only */ 104 #endif 105 106 #ifndef PERF_FLAG_FD_CLOEXEC 107 # define PERF_FLAG_FD_CLOEXEC (1UL << 3) /* O_CLOEXEC */ 108 #endif 109 110 111 struct tp_field { 112 int offset; 113 union { 114 u64 (*integer)(struct tp_field *field, struct perf_sample *sample); 115 void *(*pointer)(struct tp_field *field, struct perf_sample *sample); 116 }; 117 }; 118 119 #define TP_UINT_FIELD(bits) \ 120 static u64 tp_field__u##bits(struct tp_field *field, struct perf_sample *sample) \ 121 { \ 122 u##bits value; \ 123 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \ 124 return value; \ 125 } 126 127 TP_UINT_FIELD(8); 128 TP_UINT_FIELD(16); 129 TP_UINT_FIELD(32); 130 TP_UINT_FIELD(64); 131 132 #define TP_UINT_FIELD__SWAPPED(bits) \ 133 static u64 tp_field__swapped_u##bits(struct tp_field *field, struct perf_sample *sample) \ 134 { \ 135 u##bits value; \ 136 memcpy(&value, sample->raw_data + field->offset, sizeof(value)); \ 137 return bswap_##bits(value);\ 138 } 139 140 TP_UINT_FIELD__SWAPPED(16); 141 TP_UINT_FIELD__SWAPPED(32); 142 TP_UINT_FIELD__SWAPPED(64); 143 144 static int tp_field__init_uint(struct tp_field *field, 145 struct format_field *format_field, 146 bool needs_swap) 147 { 148 field->offset = format_field->offset; 149 150 switch (format_field->size) { 151 case 1: 152 field->integer = tp_field__u8; 153 break; 154 case 2: 155 field->integer = needs_swap ? tp_field__swapped_u16 : tp_field__u16; 156 break; 157 case 4: 158 field->integer = needs_swap ? tp_field__swapped_u32 : tp_field__u32; 159 break; 160 case 8: 161 field->integer = needs_swap ? tp_field__swapped_u64 : tp_field__u64; 162 break; 163 default: 164 return -1; 165 } 166 167 return 0; 168 } 169 170 static void *tp_field__ptr(struct tp_field *field, struct perf_sample *sample) 171 { 172 return sample->raw_data + field->offset; 173 } 174 175 static int tp_field__init_ptr(struct tp_field *field, struct format_field *format_field) 176 { 177 field->offset = format_field->offset; 178 field->pointer = tp_field__ptr; 179 return 0; 180 } 181 182 struct syscall_tp { 183 struct tp_field id; 184 union { 185 struct tp_field args, ret; 186 }; 187 }; 188 189 static int perf_evsel__init_tp_uint_field(struct perf_evsel *evsel, 190 struct tp_field *field, 191 const char *name) 192 { 193 struct format_field *format_field = perf_evsel__field(evsel, name); 194 195 if (format_field == NULL) 196 return -1; 197 198 return tp_field__init_uint(field, format_field, evsel->needs_swap); 199 } 200 201 #define perf_evsel__init_sc_tp_uint_field(evsel, name) \ 202 ({ struct syscall_tp *sc = evsel->priv;\ 203 perf_evsel__init_tp_uint_field(evsel, &sc->name, #name); }) 204 205 static int perf_evsel__init_tp_ptr_field(struct perf_evsel *evsel, 206 struct tp_field *field, 207 const char *name) 208 { 209 struct format_field *format_field = perf_evsel__field(evsel, name); 210 211 if (format_field == NULL) 212 return -1; 213 214 return tp_field__init_ptr(field, format_field); 215 } 216 217 #define perf_evsel__init_sc_tp_ptr_field(evsel, name) \ 218 ({ struct syscall_tp *sc = evsel->priv;\ 219 perf_evsel__init_tp_ptr_field(evsel, &sc->name, #name); }) 220 221 static void perf_evsel__delete_priv(struct perf_evsel *evsel) 222 { 223 zfree(&evsel->priv); 224 perf_evsel__delete(evsel); 225 } 226 227 static int perf_evsel__init_syscall_tp(struct perf_evsel *evsel, void *handler) 228 { 229 evsel->priv = malloc(sizeof(struct syscall_tp)); 230 if (evsel->priv != NULL) { 231 if (perf_evsel__init_sc_tp_uint_field(evsel, id)) 232 goto out_delete; 233 234 evsel->handler = handler; 235 return 0; 236 } 237 238 return -ENOMEM; 239 240 out_delete: 241 zfree(&evsel->priv); 242 return -ENOENT; 243 } 244 245 static struct perf_evsel *perf_evsel__syscall_newtp(const char *direction, void *handler) 246 { 247 struct perf_evsel *evsel = perf_evsel__newtp("raw_syscalls", direction); 248 249 /* older kernel (e.g., RHEL6) use syscalls:{enter,exit} */ 250 if (IS_ERR(evsel)) 251 evsel = perf_evsel__newtp("syscalls", direction); 252 253 if (IS_ERR(evsel)) 254 return NULL; 255 256 if (perf_evsel__init_syscall_tp(evsel, handler)) 257 goto out_delete; 258 259 return evsel; 260 261 out_delete: 262 perf_evsel__delete_priv(evsel); 263 return NULL; 264 } 265 266 #define perf_evsel__sc_tp_uint(evsel, name, sample) \ 267 ({ struct syscall_tp *fields = evsel->priv; \ 268 fields->name.integer(&fields->name, sample); }) 269 270 #define perf_evsel__sc_tp_ptr(evsel, name, sample) \ 271 ({ struct syscall_tp *fields = evsel->priv; \ 272 fields->name.pointer(&fields->name, sample); }) 273 274 struct syscall_arg { 275 unsigned long val; 276 struct thread *thread; 277 struct trace *trace; 278 void *parm; 279 u8 idx; 280 u8 mask; 281 }; 282 283 struct strarray { 284 int offset; 285 int nr_entries; 286 const char **entries; 287 }; 288 289 #define DEFINE_STRARRAY(array) struct strarray strarray__##array = { \ 290 .nr_entries = ARRAY_SIZE(array), \ 291 .entries = array, \ 292 } 293 294 #define DEFINE_STRARRAY_OFFSET(array, off) struct strarray strarray__##array = { \ 295 .offset = off, \ 296 .nr_entries = ARRAY_SIZE(array), \ 297 .entries = array, \ 298 } 299 300 static size_t __syscall_arg__scnprintf_strarray(char *bf, size_t size, 301 const char *intfmt, 302 struct syscall_arg *arg) 303 { 304 struct strarray *sa = arg->parm; 305 int idx = arg->val - sa->offset; 306 307 if (idx < 0 || idx >= sa->nr_entries) 308 return scnprintf(bf, size, intfmt, arg->val); 309 310 return scnprintf(bf, size, "%s", sa->entries[idx]); 311 } 312 313 static size_t syscall_arg__scnprintf_strarray(char *bf, size_t size, 314 struct syscall_arg *arg) 315 { 316 return __syscall_arg__scnprintf_strarray(bf, size, "%d", arg); 317 } 318 319 #define SCA_STRARRAY syscall_arg__scnprintf_strarray 320 321 #if defined(__i386__) || defined(__x86_64__) 322 /* 323 * FIXME: Make this available to all arches as soon as the ioctl beautifier 324 * gets rewritten to support all arches. 325 */ 326 static size_t syscall_arg__scnprintf_strhexarray(char *bf, size_t size, 327 struct syscall_arg *arg) 328 { 329 return __syscall_arg__scnprintf_strarray(bf, size, "%#x", arg); 330 } 331 332 #define SCA_STRHEXARRAY syscall_arg__scnprintf_strhexarray 333 #endif /* defined(__i386__) || defined(__x86_64__) */ 334 335 static size_t syscall_arg__scnprintf_fd(char *bf, size_t size, 336 struct syscall_arg *arg); 337 338 #define SCA_FD syscall_arg__scnprintf_fd 339 340 static size_t syscall_arg__scnprintf_fd_at(char *bf, size_t size, 341 struct syscall_arg *arg) 342 { 343 int fd = arg->val; 344 345 if (fd == AT_FDCWD) 346 return scnprintf(bf, size, "CWD"); 347 348 return syscall_arg__scnprintf_fd(bf, size, arg); 349 } 350 351 #define SCA_FDAT syscall_arg__scnprintf_fd_at 352 353 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size, 354 struct syscall_arg *arg); 355 356 #define SCA_CLOSE_FD syscall_arg__scnprintf_close_fd 357 358 static size_t syscall_arg__scnprintf_hex(char *bf, size_t size, 359 struct syscall_arg *arg) 360 { 361 return scnprintf(bf, size, "%#lx", arg->val); 362 } 363 364 #define SCA_HEX syscall_arg__scnprintf_hex 365 366 static size_t syscall_arg__scnprintf_int(char *bf, size_t size, 367 struct syscall_arg *arg) 368 { 369 return scnprintf(bf, size, "%d", arg->val); 370 } 371 372 #define SCA_INT syscall_arg__scnprintf_int 373 374 static size_t syscall_arg__scnprintf_mmap_prot(char *bf, size_t size, 375 struct syscall_arg *arg) 376 { 377 int printed = 0, prot = arg->val; 378 379 if (prot == PROT_NONE) 380 return scnprintf(bf, size, "NONE"); 381 #define P_MMAP_PROT(n) \ 382 if (prot & PROT_##n) { \ 383 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 384 prot &= ~PROT_##n; \ 385 } 386 387 P_MMAP_PROT(EXEC); 388 P_MMAP_PROT(READ); 389 P_MMAP_PROT(WRITE); 390 #ifdef PROT_SEM 391 P_MMAP_PROT(SEM); 392 #endif 393 P_MMAP_PROT(GROWSDOWN); 394 P_MMAP_PROT(GROWSUP); 395 #undef P_MMAP_PROT 396 397 if (prot) 398 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", prot); 399 400 return printed; 401 } 402 403 #define SCA_MMAP_PROT syscall_arg__scnprintf_mmap_prot 404 405 static size_t syscall_arg__scnprintf_mmap_flags(char *bf, size_t size, 406 struct syscall_arg *arg) 407 { 408 int printed = 0, flags = arg->val; 409 410 #define P_MMAP_FLAG(n) \ 411 if (flags & MAP_##n) { \ 412 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 413 flags &= ~MAP_##n; \ 414 } 415 416 P_MMAP_FLAG(SHARED); 417 P_MMAP_FLAG(PRIVATE); 418 #ifdef MAP_32BIT 419 P_MMAP_FLAG(32BIT); 420 #endif 421 P_MMAP_FLAG(ANONYMOUS); 422 P_MMAP_FLAG(DENYWRITE); 423 P_MMAP_FLAG(EXECUTABLE); 424 P_MMAP_FLAG(FILE); 425 P_MMAP_FLAG(FIXED); 426 P_MMAP_FLAG(GROWSDOWN); 427 #ifdef MAP_HUGETLB 428 P_MMAP_FLAG(HUGETLB); 429 #endif 430 P_MMAP_FLAG(LOCKED); 431 P_MMAP_FLAG(NONBLOCK); 432 P_MMAP_FLAG(NORESERVE); 433 P_MMAP_FLAG(POPULATE); 434 P_MMAP_FLAG(STACK); 435 #ifdef MAP_UNINITIALIZED 436 P_MMAP_FLAG(UNINITIALIZED); 437 #endif 438 #undef P_MMAP_FLAG 439 440 if (flags) 441 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 442 443 return printed; 444 } 445 446 #define SCA_MMAP_FLAGS syscall_arg__scnprintf_mmap_flags 447 448 static size_t syscall_arg__scnprintf_mremap_flags(char *bf, size_t size, 449 struct syscall_arg *arg) 450 { 451 int printed = 0, flags = arg->val; 452 453 #define P_MREMAP_FLAG(n) \ 454 if (flags & MREMAP_##n) { \ 455 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 456 flags &= ~MREMAP_##n; \ 457 } 458 459 P_MREMAP_FLAG(MAYMOVE); 460 #ifdef MREMAP_FIXED 461 P_MREMAP_FLAG(FIXED); 462 #endif 463 #undef P_MREMAP_FLAG 464 465 if (flags) 466 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 467 468 return printed; 469 } 470 471 #define SCA_MREMAP_FLAGS syscall_arg__scnprintf_mremap_flags 472 473 static size_t syscall_arg__scnprintf_madvise_behavior(char *bf, size_t size, 474 struct syscall_arg *arg) 475 { 476 int behavior = arg->val; 477 478 switch (behavior) { 479 #define P_MADV_BHV(n) case MADV_##n: return scnprintf(bf, size, #n) 480 P_MADV_BHV(NORMAL); 481 P_MADV_BHV(RANDOM); 482 P_MADV_BHV(SEQUENTIAL); 483 P_MADV_BHV(WILLNEED); 484 P_MADV_BHV(DONTNEED); 485 P_MADV_BHV(REMOVE); 486 P_MADV_BHV(DONTFORK); 487 P_MADV_BHV(DOFORK); 488 P_MADV_BHV(HWPOISON); 489 #ifdef MADV_SOFT_OFFLINE 490 P_MADV_BHV(SOFT_OFFLINE); 491 #endif 492 P_MADV_BHV(MERGEABLE); 493 P_MADV_BHV(UNMERGEABLE); 494 #ifdef MADV_HUGEPAGE 495 P_MADV_BHV(HUGEPAGE); 496 #endif 497 #ifdef MADV_NOHUGEPAGE 498 P_MADV_BHV(NOHUGEPAGE); 499 #endif 500 #ifdef MADV_DONTDUMP 501 P_MADV_BHV(DONTDUMP); 502 #endif 503 #ifdef MADV_DODUMP 504 P_MADV_BHV(DODUMP); 505 #endif 506 #undef P_MADV_PHV 507 default: break; 508 } 509 510 return scnprintf(bf, size, "%#x", behavior); 511 } 512 513 #define SCA_MADV_BHV syscall_arg__scnprintf_madvise_behavior 514 515 static size_t syscall_arg__scnprintf_flock(char *bf, size_t size, 516 struct syscall_arg *arg) 517 { 518 int printed = 0, op = arg->val; 519 520 if (op == 0) 521 return scnprintf(bf, size, "NONE"); 522 #define P_CMD(cmd) \ 523 if ((op & LOCK_##cmd) == LOCK_##cmd) { \ 524 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #cmd); \ 525 op &= ~LOCK_##cmd; \ 526 } 527 528 P_CMD(SH); 529 P_CMD(EX); 530 P_CMD(NB); 531 P_CMD(UN); 532 P_CMD(MAND); 533 P_CMD(RW); 534 P_CMD(READ); 535 P_CMD(WRITE); 536 #undef P_OP 537 538 if (op) 539 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", op); 540 541 return printed; 542 } 543 544 #define SCA_FLOCK syscall_arg__scnprintf_flock 545 546 static size_t syscall_arg__scnprintf_futex_op(char *bf, size_t size, struct syscall_arg *arg) 547 { 548 enum syscall_futex_args { 549 SCF_UADDR = (1 << 0), 550 SCF_OP = (1 << 1), 551 SCF_VAL = (1 << 2), 552 SCF_TIMEOUT = (1 << 3), 553 SCF_UADDR2 = (1 << 4), 554 SCF_VAL3 = (1 << 5), 555 }; 556 int op = arg->val; 557 int cmd = op & FUTEX_CMD_MASK; 558 size_t printed = 0; 559 560 switch (cmd) { 561 #define P_FUTEX_OP(n) case FUTEX_##n: printed = scnprintf(bf, size, #n); 562 P_FUTEX_OP(WAIT); arg->mask |= SCF_VAL3|SCF_UADDR2; break; 563 P_FUTEX_OP(WAKE); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; 564 P_FUTEX_OP(FD); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; 565 P_FUTEX_OP(REQUEUE); arg->mask |= SCF_VAL3|SCF_TIMEOUT; break; 566 P_FUTEX_OP(CMP_REQUEUE); arg->mask |= SCF_TIMEOUT; break; 567 P_FUTEX_OP(CMP_REQUEUE_PI); arg->mask |= SCF_TIMEOUT; break; 568 P_FUTEX_OP(WAKE_OP); break; 569 P_FUTEX_OP(LOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; 570 P_FUTEX_OP(UNLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2|SCF_TIMEOUT; break; 571 P_FUTEX_OP(TRYLOCK_PI); arg->mask |= SCF_VAL3|SCF_UADDR2; break; 572 P_FUTEX_OP(WAIT_BITSET); arg->mask |= SCF_UADDR2; break; 573 P_FUTEX_OP(WAKE_BITSET); arg->mask |= SCF_UADDR2; break; 574 P_FUTEX_OP(WAIT_REQUEUE_PI); break; 575 default: printed = scnprintf(bf, size, "%#x", cmd); break; 576 } 577 578 if (op & FUTEX_PRIVATE_FLAG) 579 printed += scnprintf(bf + printed, size - printed, "|PRIV"); 580 581 if (op & FUTEX_CLOCK_REALTIME) 582 printed += scnprintf(bf + printed, size - printed, "|CLKRT"); 583 584 return printed; 585 } 586 587 #define SCA_FUTEX_OP syscall_arg__scnprintf_futex_op 588 589 static const char *bpf_cmd[] = { 590 "MAP_CREATE", "MAP_LOOKUP_ELEM", "MAP_UPDATE_ELEM", "MAP_DELETE_ELEM", 591 "MAP_GET_NEXT_KEY", "PROG_LOAD", 592 }; 593 static DEFINE_STRARRAY(bpf_cmd); 594 595 static const char *epoll_ctl_ops[] = { "ADD", "DEL", "MOD", }; 596 static DEFINE_STRARRAY_OFFSET(epoll_ctl_ops, 1); 597 598 static const char *itimers[] = { "REAL", "VIRTUAL", "PROF", }; 599 static DEFINE_STRARRAY(itimers); 600 601 static const char *keyctl_options[] = { 602 "GET_KEYRING_ID", "JOIN_SESSION_KEYRING", "UPDATE", "REVOKE", "CHOWN", 603 "SETPERM", "DESCRIBE", "CLEAR", "LINK", "UNLINK", "SEARCH", "READ", 604 "INSTANTIATE", "NEGATE", "SET_REQKEY_KEYRING", "SET_TIMEOUT", 605 "ASSUME_AUTHORITY", "GET_SECURITY", "SESSION_TO_PARENT", "REJECT", 606 "INSTANTIATE_IOV", "INVALIDATE", "GET_PERSISTENT", 607 }; 608 static DEFINE_STRARRAY(keyctl_options); 609 610 static const char *whences[] = { "SET", "CUR", "END", 611 #ifdef SEEK_DATA 612 "DATA", 613 #endif 614 #ifdef SEEK_HOLE 615 "HOLE", 616 #endif 617 }; 618 static DEFINE_STRARRAY(whences); 619 620 static const char *fcntl_cmds[] = { 621 "DUPFD", "GETFD", "SETFD", "GETFL", "SETFL", "GETLK", "SETLK", 622 "SETLKW", "SETOWN", "GETOWN", "SETSIG", "GETSIG", "F_GETLK64", 623 "F_SETLK64", "F_SETLKW64", "F_SETOWN_EX", "F_GETOWN_EX", 624 "F_GETOWNER_UIDS", 625 }; 626 static DEFINE_STRARRAY(fcntl_cmds); 627 628 static const char *rlimit_resources[] = { 629 "CPU", "FSIZE", "DATA", "STACK", "CORE", "RSS", "NPROC", "NOFILE", 630 "MEMLOCK", "AS", "LOCKS", "SIGPENDING", "MSGQUEUE", "NICE", "RTPRIO", 631 "RTTIME", 632 }; 633 static DEFINE_STRARRAY(rlimit_resources); 634 635 static const char *sighow[] = { "BLOCK", "UNBLOCK", "SETMASK", }; 636 static DEFINE_STRARRAY(sighow); 637 638 static const char *clockid[] = { 639 "REALTIME", "MONOTONIC", "PROCESS_CPUTIME_ID", "THREAD_CPUTIME_ID", 640 "MONOTONIC_RAW", "REALTIME_COARSE", "MONOTONIC_COARSE", "BOOTTIME", 641 "REALTIME_ALARM", "BOOTTIME_ALARM", "SGI_CYCLE", "TAI" 642 }; 643 static DEFINE_STRARRAY(clockid); 644 645 static const char *socket_families[] = { 646 "UNSPEC", "LOCAL", "INET", "AX25", "IPX", "APPLETALK", "NETROM", 647 "BRIDGE", "ATMPVC", "X25", "INET6", "ROSE", "DECnet", "NETBEUI", 648 "SECURITY", "KEY", "NETLINK", "PACKET", "ASH", "ECONET", "ATMSVC", 649 "RDS", "SNA", "IRDA", "PPPOX", "WANPIPE", "LLC", "IB", "CAN", "TIPC", 650 "BLUETOOTH", "IUCV", "RXRPC", "ISDN", "PHONET", "IEEE802154", "CAIF", 651 "ALG", "NFC", "VSOCK", 652 }; 653 static DEFINE_STRARRAY(socket_families); 654 655 #ifndef SOCK_TYPE_MASK 656 #define SOCK_TYPE_MASK 0xf 657 #endif 658 659 static size_t syscall_arg__scnprintf_socket_type(char *bf, size_t size, 660 struct syscall_arg *arg) 661 { 662 size_t printed; 663 int type = arg->val, 664 flags = type & ~SOCK_TYPE_MASK; 665 666 type &= SOCK_TYPE_MASK; 667 /* 668 * Can't use a strarray, MIPS may override for ABI reasons. 669 */ 670 switch (type) { 671 #define P_SK_TYPE(n) case SOCK_##n: printed = scnprintf(bf, size, #n); break; 672 P_SK_TYPE(STREAM); 673 P_SK_TYPE(DGRAM); 674 P_SK_TYPE(RAW); 675 P_SK_TYPE(RDM); 676 P_SK_TYPE(SEQPACKET); 677 P_SK_TYPE(DCCP); 678 P_SK_TYPE(PACKET); 679 #undef P_SK_TYPE 680 default: 681 printed = scnprintf(bf, size, "%#x", type); 682 } 683 684 #define P_SK_FLAG(n) \ 685 if (flags & SOCK_##n) { \ 686 printed += scnprintf(bf + printed, size - printed, "|%s", #n); \ 687 flags &= ~SOCK_##n; \ 688 } 689 690 P_SK_FLAG(CLOEXEC); 691 P_SK_FLAG(NONBLOCK); 692 #undef P_SK_FLAG 693 694 if (flags) 695 printed += scnprintf(bf + printed, size - printed, "|%#x", flags); 696 697 return printed; 698 } 699 700 #define SCA_SK_TYPE syscall_arg__scnprintf_socket_type 701 702 #ifndef MSG_PROBE 703 #define MSG_PROBE 0x10 704 #endif 705 #ifndef MSG_WAITFORONE 706 #define MSG_WAITFORONE 0x10000 707 #endif 708 #ifndef MSG_SENDPAGE_NOTLAST 709 #define MSG_SENDPAGE_NOTLAST 0x20000 710 #endif 711 #ifndef MSG_FASTOPEN 712 #define MSG_FASTOPEN 0x20000000 713 #endif 714 715 static size_t syscall_arg__scnprintf_msg_flags(char *bf, size_t size, 716 struct syscall_arg *arg) 717 { 718 int printed = 0, flags = arg->val; 719 720 if (flags == 0) 721 return scnprintf(bf, size, "NONE"); 722 #define P_MSG_FLAG(n) \ 723 if (flags & MSG_##n) { \ 724 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 725 flags &= ~MSG_##n; \ 726 } 727 728 P_MSG_FLAG(OOB); 729 P_MSG_FLAG(PEEK); 730 P_MSG_FLAG(DONTROUTE); 731 P_MSG_FLAG(TRYHARD); 732 P_MSG_FLAG(CTRUNC); 733 P_MSG_FLAG(PROBE); 734 P_MSG_FLAG(TRUNC); 735 P_MSG_FLAG(DONTWAIT); 736 P_MSG_FLAG(EOR); 737 P_MSG_FLAG(WAITALL); 738 P_MSG_FLAG(FIN); 739 P_MSG_FLAG(SYN); 740 P_MSG_FLAG(CONFIRM); 741 P_MSG_FLAG(RST); 742 P_MSG_FLAG(ERRQUEUE); 743 P_MSG_FLAG(NOSIGNAL); 744 P_MSG_FLAG(MORE); 745 P_MSG_FLAG(WAITFORONE); 746 P_MSG_FLAG(SENDPAGE_NOTLAST); 747 P_MSG_FLAG(FASTOPEN); 748 P_MSG_FLAG(CMSG_CLOEXEC); 749 #undef P_MSG_FLAG 750 751 if (flags) 752 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 753 754 return printed; 755 } 756 757 #define SCA_MSG_FLAGS syscall_arg__scnprintf_msg_flags 758 759 static size_t syscall_arg__scnprintf_access_mode(char *bf, size_t size, 760 struct syscall_arg *arg) 761 { 762 size_t printed = 0; 763 int mode = arg->val; 764 765 if (mode == F_OK) /* 0 */ 766 return scnprintf(bf, size, "F"); 767 #define P_MODE(n) \ 768 if (mode & n##_OK) { \ 769 printed += scnprintf(bf + printed, size - printed, "%s", #n); \ 770 mode &= ~n##_OK; \ 771 } 772 773 P_MODE(R); 774 P_MODE(W); 775 P_MODE(X); 776 #undef P_MODE 777 778 if (mode) 779 printed += scnprintf(bf + printed, size - printed, "|%#x", mode); 780 781 return printed; 782 } 783 784 #define SCA_ACCMODE syscall_arg__scnprintf_access_mode 785 786 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size, 787 struct syscall_arg *arg); 788 789 #define SCA_FILENAME syscall_arg__scnprintf_filename 790 791 static size_t syscall_arg__scnprintf_open_flags(char *bf, size_t size, 792 struct syscall_arg *arg) 793 { 794 int printed = 0, flags = arg->val; 795 796 if (!(flags & O_CREAT)) 797 arg->mask |= 1 << (arg->idx + 1); /* Mask the mode parm */ 798 799 if (flags == 0) 800 return scnprintf(bf, size, "RDONLY"); 801 #define P_FLAG(n) \ 802 if (flags & O_##n) { \ 803 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 804 flags &= ~O_##n; \ 805 } 806 807 P_FLAG(APPEND); 808 P_FLAG(ASYNC); 809 P_FLAG(CLOEXEC); 810 P_FLAG(CREAT); 811 P_FLAG(DIRECT); 812 P_FLAG(DIRECTORY); 813 P_FLAG(EXCL); 814 P_FLAG(LARGEFILE); 815 P_FLAG(NOATIME); 816 P_FLAG(NOCTTY); 817 #ifdef O_NONBLOCK 818 P_FLAG(NONBLOCK); 819 #elif O_NDELAY 820 P_FLAG(NDELAY); 821 #endif 822 #ifdef O_PATH 823 P_FLAG(PATH); 824 #endif 825 P_FLAG(RDWR); 826 #ifdef O_DSYNC 827 if ((flags & O_SYNC) == O_SYNC) 828 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", "SYNC"); 829 else { 830 P_FLAG(DSYNC); 831 } 832 #else 833 P_FLAG(SYNC); 834 #endif 835 P_FLAG(TRUNC); 836 P_FLAG(WRONLY); 837 #undef P_FLAG 838 839 if (flags) 840 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 841 842 return printed; 843 } 844 845 #define SCA_OPEN_FLAGS syscall_arg__scnprintf_open_flags 846 847 static size_t syscall_arg__scnprintf_perf_flags(char *bf, size_t size, 848 struct syscall_arg *arg) 849 { 850 int printed = 0, flags = arg->val; 851 852 if (flags == 0) 853 return 0; 854 855 #define P_FLAG(n) \ 856 if (flags & PERF_FLAG_##n) { \ 857 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 858 flags &= ~PERF_FLAG_##n; \ 859 } 860 861 P_FLAG(FD_NO_GROUP); 862 P_FLAG(FD_OUTPUT); 863 P_FLAG(PID_CGROUP); 864 P_FLAG(FD_CLOEXEC); 865 #undef P_FLAG 866 867 if (flags) 868 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 869 870 return printed; 871 } 872 873 #define SCA_PERF_FLAGS syscall_arg__scnprintf_perf_flags 874 875 static size_t syscall_arg__scnprintf_eventfd_flags(char *bf, size_t size, 876 struct syscall_arg *arg) 877 { 878 int printed = 0, flags = arg->val; 879 880 if (flags == 0) 881 return scnprintf(bf, size, "NONE"); 882 #define P_FLAG(n) \ 883 if (flags & EFD_##n) { \ 884 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 885 flags &= ~EFD_##n; \ 886 } 887 888 P_FLAG(SEMAPHORE); 889 P_FLAG(CLOEXEC); 890 P_FLAG(NONBLOCK); 891 #undef P_FLAG 892 893 if (flags) 894 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 895 896 return printed; 897 } 898 899 #define SCA_EFD_FLAGS syscall_arg__scnprintf_eventfd_flags 900 901 static size_t syscall_arg__scnprintf_pipe_flags(char *bf, size_t size, 902 struct syscall_arg *arg) 903 { 904 int printed = 0, flags = arg->val; 905 906 #define P_FLAG(n) \ 907 if (flags & O_##n) { \ 908 printed += scnprintf(bf + printed, size - printed, "%s%s", printed ? "|" : "", #n); \ 909 flags &= ~O_##n; \ 910 } 911 912 P_FLAG(CLOEXEC); 913 P_FLAG(NONBLOCK); 914 #undef P_FLAG 915 916 if (flags) 917 printed += scnprintf(bf + printed, size - printed, "%s%#x", printed ? "|" : "", flags); 918 919 return printed; 920 } 921 922 #define SCA_PIPE_FLAGS syscall_arg__scnprintf_pipe_flags 923 924 static size_t syscall_arg__scnprintf_signum(char *bf, size_t size, struct syscall_arg *arg) 925 { 926 int sig = arg->val; 927 928 switch (sig) { 929 #define P_SIGNUM(n) case SIG##n: return scnprintf(bf, size, #n) 930 P_SIGNUM(HUP); 931 P_SIGNUM(INT); 932 P_SIGNUM(QUIT); 933 P_SIGNUM(ILL); 934 P_SIGNUM(TRAP); 935 P_SIGNUM(ABRT); 936 P_SIGNUM(BUS); 937 P_SIGNUM(FPE); 938 P_SIGNUM(KILL); 939 P_SIGNUM(USR1); 940 P_SIGNUM(SEGV); 941 P_SIGNUM(USR2); 942 P_SIGNUM(PIPE); 943 P_SIGNUM(ALRM); 944 P_SIGNUM(TERM); 945 P_SIGNUM(CHLD); 946 P_SIGNUM(CONT); 947 P_SIGNUM(STOP); 948 P_SIGNUM(TSTP); 949 P_SIGNUM(TTIN); 950 P_SIGNUM(TTOU); 951 P_SIGNUM(URG); 952 P_SIGNUM(XCPU); 953 P_SIGNUM(XFSZ); 954 P_SIGNUM(VTALRM); 955 P_SIGNUM(PROF); 956 P_SIGNUM(WINCH); 957 P_SIGNUM(IO); 958 P_SIGNUM(PWR); 959 P_SIGNUM(SYS); 960 #ifdef SIGEMT 961 P_SIGNUM(EMT); 962 #endif 963 #ifdef SIGSTKFLT 964 P_SIGNUM(STKFLT); 965 #endif 966 #ifdef SIGSWI 967 P_SIGNUM(SWI); 968 #endif 969 default: break; 970 } 971 972 return scnprintf(bf, size, "%#x", sig); 973 } 974 975 #define SCA_SIGNUM syscall_arg__scnprintf_signum 976 977 #if defined(__i386__) || defined(__x86_64__) 978 /* 979 * FIXME: Make this available to all arches. 980 */ 981 #define TCGETS 0x5401 982 983 static const char *tioctls[] = { 984 "TCGETS", "TCSETS", "TCSETSW", "TCSETSF", "TCGETA", "TCSETA", "TCSETAW", 985 "TCSETAF", "TCSBRK", "TCXONC", "TCFLSH", "TIOCEXCL", "TIOCNXCL", 986 "TIOCSCTTY", "TIOCGPGRP", "TIOCSPGRP", "TIOCOUTQ", "TIOCSTI", 987 "TIOCGWINSZ", "TIOCSWINSZ", "TIOCMGET", "TIOCMBIS", "TIOCMBIC", 988 "TIOCMSET", "TIOCGSOFTCAR", "TIOCSSOFTCAR", "FIONREAD", "TIOCLINUX", 989 "TIOCCONS", "TIOCGSERIAL", "TIOCSSERIAL", "TIOCPKT", "FIONBIO", 990 "TIOCNOTTY", "TIOCSETD", "TIOCGETD", "TCSBRKP", [0x27] = "TIOCSBRK", 991 "TIOCCBRK", "TIOCGSID", "TCGETS2", "TCSETS2", "TCSETSW2", "TCSETSF2", 992 "TIOCGRS485", "TIOCSRS485", "TIOCGPTN", "TIOCSPTLCK", 993 "TIOCGDEV||TCGETX", "TCSETX", "TCSETXF", "TCSETXW", "TIOCSIG", 994 "TIOCVHANGUP", "TIOCGPKT", "TIOCGPTLCK", "TIOCGEXCL", 995 [0x50] = "FIONCLEX", "FIOCLEX", "FIOASYNC", "TIOCSERCONFIG", 996 "TIOCSERGWILD", "TIOCSERSWILD", "TIOCGLCKTRMIOS", "TIOCSLCKTRMIOS", 997 "TIOCSERGSTRUCT", "TIOCSERGETLSR", "TIOCSERGETMULTI", "TIOCSERSETMULTI", 998 "TIOCMIWAIT", "TIOCGICOUNT", [0x60] = "FIOQSIZE", 999 }; 1000 1001 static DEFINE_STRARRAY_OFFSET(tioctls, 0x5401); 1002 #endif /* defined(__i386__) || defined(__x86_64__) */ 1003 1004 #define STRARRAY(arg, name, array) \ 1005 .arg_scnprintf = { [arg] = SCA_STRARRAY, }, \ 1006 .arg_parm = { [arg] = &strarray__##array, } 1007 1008 static struct syscall_fmt { 1009 const char *name; 1010 const char *alias; 1011 size_t (*arg_scnprintf[6])(char *bf, size_t size, struct syscall_arg *arg); 1012 void *arg_parm[6]; 1013 bool errmsg; 1014 bool timeout; 1015 bool hexret; 1016 } syscall_fmts[] = { 1017 { .name = "access", .errmsg = true, 1018 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ 1019 [1] = SCA_ACCMODE, /* mode */ }, }, 1020 { .name = "arch_prctl", .errmsg = true, .alias = "prctl", }, 1021 { .name = "bpf", .errmsg = true, STRARRAY(0, cmd, bpf_cmd), }, 1022 { .name = "brk", .hexret = true, 1023 .arg_scnprintf = { [0] = SCA_HEX, /* brk */ }, }, 1024 { .name = "chdir", .errmsg = true, 1025 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1026 { .name = "chmod", .errmsg = true, 1027 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1028 { .name = "chroot", .errmsg = true, 1029 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1030 { .name = "clock_gettime", .errmsg = true, STRARRAY(0, clk_id, clockid), }, 1031 { .name = "close", .errmsg = true, 1032 .arg_scnprintf = { [0] = SCA_CLOSE_FD, /* fd */ }, }, 1033 { .name = "connect", .errmsg = true, }, 1034 { .name = "creat", .errmsg = true, 1035 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1036 { .name = "dup", .errmsg = true, 1037 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1038 { .name = "dup2", .errmsg = true, 1039 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1040 { .name = "dup3", .errmsg = true, 1041 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1042 { .name = "epoll_ctl", .errmsg = true, STRARRAY(1, op, epoll_ctl_ops), }, 1043 { .name = "eventfd2", .errmsg = true, 1044 .arg_scnprintf = { [1] = SCA_EFD_FLAGS, /* flags */ }, }, 1045 { .name = "faccessat", .errmsg = true, 1046 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ 1047 [1] = SCA_FILENAME, /* filename */ }, }, 1048 { .name = "fadvise64", .errmsg = true, 1049 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1050 { .name = "fallocate", .errmsg = true, 1051 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1052 { .name = "fchdir", .errmsg = true, 1053 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1054 { .name = "fchmod", .errmsg = true, 1055 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1056 { .name = "fchmodat", .errmsg = true, 1057 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ 1058 [1] = SCA_FILENAME, /* filename */ }, }, 1059 { .name = "fchown", .errmsg = true, 1060 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1061 { .name = "fchownat", .errmsg = true, 1062 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ 1063 [1] = SCA_FILENAME, /* filename */ }, }, 1064 { .name = "fcntl", .errmsg = true, 1065 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1066 [1] = SCA_STRARRAY, /* cmd */ }, 1067 .arg_parm = { [1] = &strarray__fcntl_cmds, /* cmd */ }, }, 1068 { .name = "fdatasync", .errmsg = true, 1069 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1070 { .name = "flock", .errmsg = true, 1071 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1072 [1] = SCA_FLOCK, /* cmd */ }, }, 1073 { .name = "fsetxattr", .errmsg = true, 1074 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1075 { .name = "fstat", .errmsg = true, .alias = "newfstat", 1076 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1077 { .name = "fstatat", .errmsg = true, .alias = "newfstatat", 1078 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ 1079 [1] = SCA_FILENAME, /* filename */ }, }, 1080 { .name = "fstatfs", .errmsg = true, 1081 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1082 { .name = "fsync", .errmsg = true, 1083 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1084 { .name = "ftruncate", .errmsg = true, 1085 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1086 { .name = "futex", .errmsg = true, 1087 .arg_scnprintf = { [1] = SCA_FUTEX_OP, /* op */ }, }, 1088 { .name = "futimesat", .errmsg = true, 1089 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ 1090 [1] = SCA_FILENAME, /* filename */ }, }, 1091 { .name = "getdents", .errmsg = true, 1092 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1093 { .name = "getdents64", .errmsg = true, 1094 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1095 { .name = "getitimer", .errmsg = true, STRARRAY(0, which, itimers), }, 1096 { .name = "getrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, 1097 { .name = "getxattr", .errmsg = true, 1098 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1099 { .name = "inotify_add_watch", .errmsg = true, 1100 .arg_scnprintf = { [1] = SCA_FILENAME, /* pathname */ }, }, 1101 { .name = "ioctl", .errmsg = true, 1102 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1103 #if defined(__i386__) || defined(__x86_64__) 1104 /* 1105 * FIXME: Make this available to all arches. 1106 */ 1107 [1] = SCA_STRHEXARRAY, /* cmd */ 1108 [2] = SCA_HEX, /* arg */ }, 1109 .arg_parm = { [1] = &strarray__tioctls, /* cmd */ }, }, 1110 #else 1111 [2] = SCA_HEX, /* arg */ }, }, 1112 #endif 1113 { .name = "keyctl", .errmsg = true, STRARRAY(0, option, keyctl_options), }, 1114 { .name = "kill", .errmsg = true, 1115 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, 1116 { .name = "lchown", .errmsg = true, 1117 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1118 { .name = "lgetxattr", .errmsg = true, 1119 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1120 { .name = "linkat", .errmsg = true, 1121 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ }, }, 1122 { .name = "listxattr", .errmsg = true, 1123 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1124 { .name = "llistxattr", .errmsg = true, 1125 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1126 { .name = "lremovexattr", .errmsg = true, 1127 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1128 { .name = "lseek", .errmsg = true, 1129 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1130 [2] = SCA_STRARRAY, /* whence */ }, 1131 .arg_parm = { [2] = &strarray__whences, /* whence */ }, }, 1132 { .name = "lsetxattr", .errmsg = true, 1133 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1134 { .name = "lstat", .errmsg = true, .alias = "newlstat", 1135 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1136 { .name = "lsxattr", .errmsg = true, 1137 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1138 { .name = "madvise", .errmsg = true, 1139 .arg_scnprintf = { [0] = SCA_HEX, /* start */ 1140 [2] = SCA_MADV_BHV, /* behavior */ }, }, 1141 { .name = "mkdir", .errmsg = true, 1142 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1143 { .name = "mkdirat", .errmsg = true, 1144 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ 1145 [1] = SCA_FILENAME, /* pathname */ }, }, 1146 { .name = "mknod", .errmsg = true, 1147 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1148 { .name = "mknodat", .errmsg = true, 1149 .arg_scnprintf = { [0] = SCA_FDAT, /* fd */ 1150 [1] = SCA_FILENAME, /* filename */ }, }, 1151 { .name = "mlock", .errmsg = true, 1152 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, 1153 { .name = "mlockall", .errmsg = true, 1154 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, 1155 { .name = "mmap", .hexret = true, 1156 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ 1157 [2] = SCA_MMAP_PROT, /* prot */ 1158 [3] = SCA_MMAP_FLAGS, /* flags */ 1159 [4] = SCA_FD, /* fd */ }, }, 1160 { .name = "mprotect", .errmsg = true, 1161 .arg_scnprintf = { [0] = SCA_HEX, /* start */ 1162 [2] = SCA_MMAP_PROT, /* prot */ }, }, 1163 { .name = "mq_unlink", .errmsg = true, 1164 .arg_scnprintf = { [0] = SCA_FILENAME, /* u_name */ }, }, 1165 { .name = "mremap", .hexret = true, 1166 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ 1167 [3] = SCA_MREMAP_FLAGS, /* flags */ 1168 [4] = SCA_HEX, /* new_addr */ }, }, 1169 { .name = "munlock", .errmsg = true, 1170 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, 1171 { .name = "munmap", .errmsg = true, 1172 .arg_scnprintf = { [0] = SCA_HEX, /* addr */ }, }, 1173 { .name = "name_to_handle_at", .errmsg = true, 1174 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, 1175 { .name = "newfstatat", .errmsg = true, 1176 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ 1177 [1] = SCA_FILENAME, /* filename */ }, }, 1178 { .name = "open", .errmsg = true, 1179 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ 1180 [1] = SCA_OPEN_FLAGS, /* flags */ }, }, 1181 { .name = "open_by_handle_at", .errmsg = true, 1182 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ 1183 [2] = SCA_OPEN_FLAGS, /* flags */ }, }, 1184 { .name = "openat", .errmsg = true, 1185 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ 1186 [1] = SCA_FILENAME, /* filename */ 1187 [2] = SCA_OPEN_FLAGS, /* flags */ }, }, 1188 { .name = "perf_event_open", .errmsg = true, 1189 .arg_scnprintf = { [1] = SCA_INT, /* pid */ 1190 [2] = SCA_INT, /* cpu */ 1191 [3] = SCA_FD, /* group_fd */ 1192 [4] = SCA_PERF_FLAGS, /* flags */ }, }, 1193 { .name = "pipe2", .errmsg = true, 1194 .arg_scnprintf = { [1] = SCA_PIPE_FLAGS, /* flags */ }, }, 1195 { .name = "poll", .errmsg = true, .timeout = true, }, 1196 { .name = "ppoll", .errmsg = true, .timeout = true, }, 1197 { .name = "pread", .errmsg = true, .alias = "pread64", 1198 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1199 { .name = "preadv", .errmsg = true, .alias = "pread", 1200 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1201 { .name = "prlimit64", .errmsg = true, STRARRAY(1, resource, rlimit_resources), }, 1202 { .name = "pwrite", .errmsg = true, .alias = "pwrite64", 1203 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1204 { .name = "pwritev", .errmsg = true, 1205 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1206 { .name = "read", .errmsg = true, 1207 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1208 { .name = "readlink", .errmsg = true, 1209 .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, 1210 { .name = "readlinkat", .errmsg = true, 1211 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ 1212 [1] = SCA_FILENAME, /* pathname */ }, }, 1213 { .name = "readv", .errmsg = true, 1214 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1215 { .name = "recvfrom", .errmsg = true, 1216 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1217 [3] = SCA_MSG_FLAGS, /* flags */ }, }, 1218 { .name = "recvmmsg", .errmsg = true, 1219 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1220 [3] = SCA_MSG_FLAGS, /* flags */ }, }, 1221 { .name = "recvmsg", .errmsg = true, 1222 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1223 [2] = SCA_MSG_FLAGS, /* flags */ }, }, 1224 { .name = "removexattr", .errmsg = true, 1225 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1226 { .name = "renameat", .errmsg = true, 1227 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, 1228 { .name = "rmdir", .errmsg = true, 1229 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1230 { .name = "rt_sigaction", .errmsg = true, 1231 .arg_scnprintf = { [0] = SCA_SIGNUM, /* sig */ }, }, 1232 { .name = "rt_sigprocmask", .errmsg = true, STRARRAY(0, how, sighow), }, 1233 { .name = "rt_sigqueueinfo", .errmsg = true, 1234 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, 1235 { .name = "rt_tgsigqueueinfo", .errmsg = true, 1236 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, 1237 { .name = "select", .errmsg = true, .timeout = true, }, 1238 { .name = "sendmmsg", .errmsg = true, 1239 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1240 [3] = SCA_MSG_FLAGS, /* flags */ }, }, 1241 { .name = "sendmsg", .errmsg = true, 1242 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1243 [2] = SCA_MSG_FLAGS, /* flags */ }, }, 1244 { .name = "sendto", .errmsg = true, 1245 .arg_scnprintf = { [0] = SCA_FD, /* fd */ 1246 [3] = SCA_MSG_FLAGS, /* flags */ }, }, 1247 { .name = "setitimer", .errmsg = true, STRARRAY(0, which, itimers), }, 1248 { .name = "setrlimit", .errmsg = true, STRARRAY(0, resource, rlimit_resources), }, 1249 { .name = "setxattr", .errmsg = true, 1250 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1251 { .name = "shutdown", .errmsg = true, 1252 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1253 { .name = "socket", .errmsg = true, 1254 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ 1255 [1] = SCA_SK_TYPE, /* type */ }, 1256 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, 1257 { .name = "socketpair", .errmsg = true, 1258 .arg_scnprintf = { [0] = SCA_STRARRAY, /* family */ 1259 [1] = SCA_SK_TYPE, /* type */ }, 1260 .arg_parm = { [0] = &strarray__socket_families, /* family */ }, }, 1261 { .name = "stat", .errmsg = true, .alias = "newstat", 1262 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1263 { .name = "statfs", .errmsg = true, 1264 .arg_scnprintf = { [0] = SCA_FILENAME, /* pathname */ }, }, 1265 { .name = "swapoff", .errmsg = true, 1266 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, }, 1267 { .name = "swapon", .errmsg = true, 1268 .arg_scnprintf = { [0] = SCA_FILENAME, /* specialfile */ }, }, 1269 { .name = "symlinkat", .errmsg = true, 1270 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ }, }, 1271 { .name = "tgkill", .errmsg = true, 1272 .arg_scnprintf = { [2] = SCA_SIGNUM, /* sig */ }, }, 1273 { .name = "tkill", .errmsg = true, 1274 .arg_scnprintf = { [1] = SCA_SIGNUM, /* sig */ }, }, 1275 { .name = "truncate", .errmsg = true, 1276 .arg_scnprintf = { [0] = SCA_FILENAME, /* path */ }, }, 1277 { .name = "uname", .errmsg = true, .alias = "newuname", }, 1278 { .name = "unlinkat", .errmsg = true, 1279 .arg_scnprintf = { [0] = SCA_FDAT, /* dfd */ 1280 [1] = SCA_FILENAME, /* pathname */ }, }, 1281 { .name = "utime", .errmsg = true, 1282 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1283 { .name = "utimensat", .errmsg = true, 1284 .arg_scnprintf = { [0] = SCA_FDAT, /* dirfd */ 1285 [1] = SCA_FILENAME, /* filename */ }, }, 1286 { .name = "utimes", .errmsg = true, 1287 .arg_scnprintf = { [0] = SCA_FILENAME, /* filename */ }, }, 1288 { .name = "vmsplice", .errmsg = true, 1289 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1290 { .name = "write", .errmsg = true, 1291 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1292 { .name = "writev", .errmsg = true, 1293 .arg_scnprintf = { [0] = SCA_FD, /* fd */ }, }, 1294 }; 1295 1296 static int syscall_fmt__cmp(const void *name, const void *fmtp) 1297 { 1298 const struct syscall_fmt *fmt = fmtp; 1299 return strcmp(name, fmt->name); 1300 } 1301 1302 static struct syscall_fmt *syscall_fmt__find(const char *name) 1303 { 1304 const int nmemb = ARRAY_SIZE(syscall_fmts); 1305 return bsearch(name, syscall_fmts, nmemb, sizeof(struct syscall_fmt), syscall_fmt__cmp); 1306 } 1307 1308 struct syscall { 1309 struct event_format *tp_format; 1310 int nr_args; 1311 struct format_field *args; 1312 const char *name; 1313 bool is_exit; 1314 struct syscall_fmt *fmt; 1315 size_t (**arg_scnprintf)(char *bf, size_t size, struct syscall_arg *arg); 1316 void **arg_parm; 1317 }; 1318 1319 static size_t fprintf_duration(unsigned long t, FILE *fp) 1320 { 1321 double duration = (double)t / NSEC_PER_MSEC; 1322 size_t printed = fprintf(fp, "("); 1323 1324 if (duration >= 1.0) 1325 printed += color_fprintf(fp, PERF_COLOR_RED, "%6.3f ms", duration); 1326 else if (duration >= 0.01) 1327 printed += color_fprintf(fp, PERF_COLOR_YELLOW, "%6.3f ms", duration); 1328 else 1329 printed += color_fprintf(fp, PERF_COLOR_NORMAL, "%6.3f ms", duration); 1330 return printed + fprintf(fp, "): "); 1331 } 1332 1333 /** 1334 * filename.ptr: The filename char pointer that will be vfs_getname'd 1335 * filename.entry_str_pos: Where to insert the string translated from 1336 * filename.ptr by the vfs_getname tracepoint/kprobe. 1337 */ 1338 struct thread_trace { 1339 u64 entry_time; 1340 u64 exit_time; 1341 bool entry_pending; 1342 unsigned long nr_events; 1343 unsigned long pfmaj, pfmin; 1344 char *entry_str; 1345 double runtime_ms; 1346 struct { 1347 unsigned long ptr; 1348 short int entry_str_pos; 1349 bool pending_open; 1350 unsigned int namelen; 1351 char *name; 1352 } filename; 1353 struct { 1354 int max; 1355 char **table; 1356 } paths; 1357 1358 struct intlist *syscall_stats; 1359 }; 1360 1361 static struct thread_trace *thread_trace__new(void) 1362 { 1363 struct thread_trace *ttrace = zalloc(sizeof(struct thread_trace)); 1364 1365 if (ttrace) 1366 ttrace->paths.max = -1; 1367 1368 ttrace->syscall_stats = intlist__new(NULL); 1369 1370 return ttrace; 1371 } 1372 1373 static struct thread_trace *thread__trace(struct thread *thread, FILE *fp) 1374 { 1375 struct thread_trace *ttrace; 1376 1377 if (thread == NULL) 1378 goto fail; 1379 1380 if (thread__priv(thread) == NULL) 1381 thread__set_priv(thread, thread_trace__new()); 1382 1383 if (thread__priv(thread) == NULL) 1384 goto fail; 1385 1386 ttrace = thread__priv(thread); 1387 ++ttrace->nr_events; 1388 1389 return ttrace; 1390 fail: 1391 color_fprintf(fp, PERF_COLOR_RED, 1392 "WARNING: not enough memory, dropping samples!\n"); 1393 return NULL; 1394 } 1395 1396 #define TRACE_PFMAJ (1 << 0) 1397 #define TRACE_PFMIN (1 << 1) 1398 1399 static const size_t trace__entry_str_size = 2048; 1400 1401 struct trace { 1402 struct perf_tool tool; 1403 struct { 1404 int machine; 1405 int open_id; 1406 } audit; 1407 struct { 1408 int max; 1409 struct syscall *table; 1410 struct { 1411 struct perf_evsel *sys_enter, 1412 *sys_exit; 1413 } events; 1414 } syscalls; 1415 struct record_opts opts; 1416 struct perf_evlist *evlist; 1417 struct machine *host; 1418 struct thread *current; 1419 u64 base_time; 1420 FILE *output; 1421 unsigned long nr_events; 1422 struct strlist *ev_qualifier; 1423 struct { 1424 size_t nr; 1425 int *entries; 1426 } ev_qualifier_ids; 1427 struct intlist *tid_list; 1428 struct intlist *pid_list; 1429 struct { 1430 size_t nr; 1431 pid_t *entries; 1432 } filter_pids; 1433 double duration_filter; 1434 double runtime_ms; 1435 struct { 1436 u64 vfs_getname, 1437 proc_getname; 1438 } stats; 1439 bool not_ev_qualifier; 1440 bool live; 1441 bool full_time; 1442 bool sched; 1443 bool multiple_threads; 1444 bool summary; 1445 bool summary_only; 1446 bool show_comm; 1447 bool show_tool_stats; 1448 bool trace_syscalls; 1449 bool force; 1450 bool vfs_getname; 1451 int trace_pgfaults; 1452 }; 1453 1454 static int trace__set_fd_pathname(struct thread *thread, int fd, const char *pathname) 1455 { 1456 struct thread_trace *ttrace = thread__priv(thread); 1457 1458 if (fd > ttrace->paths.max) { 1459 char **npath = realloc(ttrace->paths.table, (fd + 1) * sizeof(char *)); 1460 1461 if (npath == NULL) 1462 return -1; 1463 1464 if (ttrace->paths.max != -1) { 1465 memset(npath + ttrace->paths.max + 1, 0, 1466 (fd - ttrace->paths.max) * sizeof(char *)); 1467 } else { 1468 memset(npath, 0, (fd + 1) * sizeof(char *)); 1469 } 1470 1471 ttrace->paths.table = npath; 1472 ttrace->paths.max = fd; 1473 } 1474 1475 ttrace->paths.table[fd] = strdup(pathname); 1476 1477 return ttrace->paths.table[fd] != NULL ? 0 : -1; 1478 } 1479 1480 static int thread__read_fd_path(struct thread *thread, int fd) 1481 { 1482 char linkname[PATH_MAX], pathname[PATH_MAX]; 1483 struct stat st; 1484 int ret; 1485 1486 if (thread->pid_ == thread->tid) { 1487 scnprintf(linkname, sizeof(linkname), 1488 "/proc/%d/fd/%d", thread->pid_, fd); 1489 } else { 1490 scnprintf(linkname, sizeof(linkname), 1491 "/proc/%d/task/%d/fd/%d", thread->pid_, thread->tid, fd); 1492 } 1493 1494 if (lstat(linkname, &st) < 0 || st.st_size + 1 > (off_t)sizeof(pathname)) 1495 return -1; 1496 1497 ret = readlink(linkname, pathname, sizeof(pathname)); 1498 1499 if (ret < 0 || ret > st.st_size) 1500 return -1; 1501 1502 pathname[ret] = '\0'; 1503 return trace__set_fd_pathname(thread, fd, pathname); 1504 } 1505 1506 static const char *thread__fd_path(struct thread *thread, int fd, 1507 struct trace *trace) 1508 { 1509 struct thread_trace *ttrace = thread__priv(thread); 1510 1511 if (ttrace == NULL) 1512 return NULL; 1513 1514 if (fd < 0) 1515 return NULL; 1516 1517 if ((fd > ttrace->paths.max || ttrace->paths.table[fd] == NULL)) { 1518 if (!trace->live) 1519 return NULL; 1520 ++trace->stats.proc_getname; 1521 if (thread__read_fd_path(thread, fd)) 1522 return NULL; 1523 } 1524 1525 return ttrace->paths.table[fd]; 1526 } 1527 1528 static size_t syscall_arg__scnprintf_fd(char *bf, size_t size, 1529 struct syscall_arg *arg) 1530 { 1531 int fd = arg->val; 1532 size_t printed = scnprintf(bf, size, "%d", fd); 1533 const char *path = thread__fd_path(arg->thread, fd, arg->trace); 1534 1535 if (path) 1536 printed += scnprintf(bf + printed, size - printed, "<%s>", path); 1537 1538 return printed; 1539 } 1540 1541 static size_t syscall_arg__scnprintf_close_fd(char *bf, size_t size, 1542 struct syscall_arg *arg) 1543 { 1544 int fd = arg->val; 1545 size_t printed = syscall_arg__scnprintf_fd(bf, size, arg); 1546 struct thread_trace *ttrace = thread__priv(arg->thread); 1547 1548 if (ttrace && fd >= 0 && fd <= ttrace->paths.max) 1549 zfree(&ttrace->paths.table[fd]); 1550 1551 return printed; 1552 } 1553 1554 static void thread__set_filename_pos(struct thread *thread, const char *bf, 1555 unsigned long ptr) 1556 { 1557 struct thread_trace *ttrace = thread__priv(thread); 1558 1559 ttrace->filename.ptr = ptr; 1560 ttrace->filename.entry_str_pos = bf - ttrace->entry_str; 1561 } 1562 1563 static size_t syscall_arg__scnprintf_filename(char *bf, size_t size, 1564 struct syscall_arg *arg) 1565 { 1566 unsigned long ptr = arg->val; 1567 1568 if (!arg->trace->vfs_getname) 1569 return scnprintf(bf, size, "%#x", ptr); 1570 1571 thread__set_filename_pos(arg->thread, bf, ptr); 1572 return 0; 1573 } 1574 1575 static bool trace__filter_duration(struct trace *trace, double t) 1576 { 1577 return t < (trace->duration_filter * NSEC_PER_MSEC); 1578 } 1579 1580 static size_t trace__fprintf_tstamp(struct trace *trace, u64 tstamp, FILE *fp) 1581 { 1582 double ts = (double)(tstamp - trace->base_time) / NSEC_PER_MSEC; 1583 1584 return fprintf(fp, "%10.3f ", ts); 1585 } 1586 1587 static bool done = false; 1588 static bool interrupted = false; 1589 1590 static void sig_handler(int sig) 1591 { 1592 done = true; 1593 interrupted = sig == SIGINT; 1594 } 1595 1596 static size_t trace__fprintf_entry_head(struct trace *trace, struct thread *thread, 1597 u64 duration, u64 tstamp, FILE *fp) 1598 { 1599 size_t printed = trace__fprintf_tstamp(trace, tstamp, fp); 1600 printed += fprintf_duration(duration, fp); 1601 1602 if (trace->multiple_threads) { 1603 if (trace->show_comm) 1604 printed += fprintf(fp, "%.14s/", thread__comm_str(thread)); 1605 printed += fprintf(fp, "%d ", thread->tid); 1606 } 1607 1608 return printed; 1609 } 1610 1611 static int trace__process_event(struct trace *trace, struct machine *machine, 1612 union perf_event *event, struct perf_sample *sample) 1613 { 1614 int ret = 0; 1615 1616 switch (event->header.type) { 1617 case PERF_RECORD_LOST: 1618 color_fprintf(trace->output, PERF_COLOR_RED, 1619 "LOST %" PRIu64 " events!\n", event->lost.lost); 1620 ret = machine__process_lost_event(machine, event, sample); 1621 default: 1622 ret = machine__process_event(machine, event, sample); 1623 break; 1624 } 1625 1626 return ret; 1627 } 1628 1629 static int trace__tool_process(struct perf_tool *tool, 1630 union perf_event *event, 1631 struct perf_sample *sample, 1632 struct machine *machine) 1633 { 1634 struct trace *trace = container_of(tool, struct trace, tool); 1635 return trace__process_event(trace, machine, event, sample); 1636 } 1637 1638 static int trace__symbols_init(struct trace *trace, struct perf_evlist *evlist) 1639 { 1640 int err = symbol__init(NULL); 1641 1642 if (err) 1643 return err; 1644 1645 trace->host = machine__new_host(); 1646 if (trace->host == NULL) 1647 return -ENOMEM; 1648 1649 if (trace_event__register_resolver(trace->host, machine__resolve_kernel_addr) < 0) 1650 return -errno; 1651 1652 err = __machine__synthesize_threads(trace->host, &trace->tool, &trace->opts.target, 1653 evlist->threads, trace__tool_process, false, 1654 trace->opts.proc_map_timeout); 1655 if (err) 1656 symbol__exit(); 1657 1658 return err; 1659 } 1660 1661 static int syscall__set_arg_fmts(struct syscall *sc) 1662 { 1663 struct format_field *field; 1664 int idx = 0; 1665 1666 sc->arg_scnprintf = calloc(sc->nr_args, sizeof(void *)); 1667 if (sc->arg_scnprintf == NULL) 1668 return -1; 1669 1670 if (sc->fmt) 1671 sc->arg_parm = sc->fmt->arg_parm; 1672 1673 for (field = sc->args; field; field = field->next) { 1674 if (sc->fmt && sc->fmt->arg_scnprintf[idx]) 1675 sc->arg_scnprintf[idx] = sc->fmt->arg_scnprintf[idx]; 1676 else if (field->flags & FIELD_IS_POINTER) 1677 sc->arg_scnprintf[idx] = syscall_arg__scnprintf_hex; 1678 ++idx; 1679 } 1680 1681 return 0; 1682 } 1683 1684 static int trace__read_syscall_info(struct trace *trace, int id) 1685 { 1686 char tp_name[128]; 1687 struct syscall *sc; 1688 const char *name = audit_syscall_to_name(id, trace->audit.machine); 1689 1690 if (name == NULL) 1691 return -1; 1692 1693 if (id > trace->syscalls.max) { 1694 struct syscall *nsyscalls = realloc(trace->syscalls.table, (id + 1) * sizeof(*sc)); 1695 1696 if (nsyscalls == NULL) 1697 return -1; 1698 1699 if (trace->syscalls.max != -1) { 1700 memset(nsyscalls + trace->syscalls.max + 1, 0, 1701 (id - trace->syscalls.max) * sizeof(*sc)); 1702 } else { 1703 memset(nsyscalls, 0, (id + 1) * sizeof(*sc)); 1704 } 1705 1706 trace->syscalls.table = nsyscalls; 1707 trace->syscalls.max = id; 1708 } 1709 1710 sc = trace->syscalls.table + id; 1711 sc->name = name; 1712 1713 sc->fmt = syscall_fmt__find(sc->name); 1714 1715 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->name); 1716 sc->tp_format = trace_event__tp_format("syscalls", tp_name); 1717 1718 if (IS_ERR(sc->tp_format) && sc->fmt && sc->fmt->alias) { 1719 snprintf(tp_name, sizeof(tp_name), "sys_enter_%s", sc->fmt->alias); 1720 sc->tp_format = trace_event__tp_format("syscalls", tp_name); 1721 } 1722 1723 if (IS_ERR(sc->tp_format)) 1724 return -1; 1725 1726 sc->args = sc->tp_format->format.fields; 1727 sc->nr_args = sc->tp_format->format.nr_fields; 1728 /* 1729 * We need to check and discard the first variable '__syscall_nr' 1730 * or 'nr' that mean the syscall number. It is needless here. 1731 * So drop '__syscall_nr' or 'nr' field but does not exist on older kernels. 1732 */ 1733 if (sc->args && (!strcmp(sc->args->name, "__syscall_nr") || !strcmp(sc->args->name, "nr"))) { 1734 sc->args = sc->args->next; 1735 --sc->nr_args; 1736 } 1737 1738 sc->is_exit = !strcmp(name, "exit_group") || !strcmp(name, "exit"); 1739 1740 return syscall__set_arg_fmts(sc); 1741 } 1742 1743 static int trace__validate_ev_qualifier(struct trace *trace) 1744 { 1745 int err = 0, i; 1746 struct str_node *pos; 1747 1748 trace->ev_qualifier_ids.nr = strlist__nr_entries(trace->ev_qualifier); 1749 trace->ev_qualifier_ids.entries = malloc(trace->ev_qualifier_ids.nr * 1750 sizeof(trace->ev_qualifier_ids.entries[0])); 1751 1752 if (trace->ev_qualifier_ids.entries == NULL) { 1753 fputs("Error:\tNot enough memory for allocating events qualifier ids\n", 1754 trace->output); 1755 err = -EINVAL; 1756 goto out; 1757 } 1758 1759 i = 0; 1760 1761 strlist__for_each(pos, trace->ev_qualifier) { 1762 const char *sc = pos->s; 1763 int id = audit_name_to_syscall(sc, trace->audit.machine); 1764 1765 if (id < 0) { 1766 if (err == 0) { 1767 fputs("Error:\tInvalid syscall ", trace->output); 1768 err = -EINVAL; 1769 } else { 1770 fputs(", ", trace->output); 1771 } 1772 1773 fputs(sc, trace->output); 1774 } 1775 1776 trace->ev_qualifier_ids.entries[i++] = id; 1777 } 1778 1779 if (err < 0) { 1780 fputs("\nHint:\ttry 'perf list syscalls:sys_enter_*'" 1781 "\nHint:\tand: 'man syscalls'\n", trace->output); 1782 zfree(&trace->ev_qualifier_ids.entries); 1783 trace->ev_qualifier_ids.nr = 0; 1784 } 1785 out: 1786 return err; 1787 } 1788 1789 /* 1790 * args is to be interpreted as a series of longs but we need to handle 1791 * 8-byte unaligned accesses. args points to raw_data within the event 1792 * and raw_data is guaranteed to be 8-byte unaligned because it is 1793 * preceded by raw_size which is a u32. So we need to copy args to a temp 1794 * variable to read it. Most notably this avoids extended load instructions 1795 * on unaligned addresses 1796 */ 1797 1798 static size_t syscall__scnprintf_args(struct syscall *sc, char *bf, size_t size, 1799 unsigned char *args, struct trace *trace, 1800 struct thread *thread) 1801 { 1802 size_t printed = 0; 1803 unsigned char *p; 1804 unsigned long val; 1805 1806 if (sc->args != NULL) { 1807 struct format_field *field; 1808 u8 bit = 1; 1809 struct syscall_arg arg = { 1810 .idx = 0, 1811 .mask = 0, 1812 .trace = trace, 1813 .thread = thread, 1814 }; 1815 1816 for (field = sc->args; field; 1817 field = field->next, ++arg.idx, bit <<= 1) { 1818 if (arg.mask & bit) 1819 continue; 1820 1821 /* special care for unaligned accesses */ 1822 p = args + sizeof(unsigned long) * arg.idx; 1823 memcpy(&val, p, sizeof(val)); 1824 1825 /* 1826 * Suppress this argument if its value is zero and 1827 * and we don't have a string associated in an 1828 * strarray for it. 1829 */ 1830 if (val == 0 && 1831 !(sc->arg_scnprintf && 1832 sc->arg_scnprintf[arg.idx] == SCA_STRARRAY && 1833 sc->arg_parm[arg.idx])) 1834 continue; 1835 1836 printed += scnprintf(bf + printed, size - printed, 1837 "%s%s: ", printed ? ", " : "", field->name); 1838 if (sc->arg_scnprintf && sc->arg_scnprintf[arg.idx]) { 1839 arg.val = val; 1840 if (sc->arg_parm) 1841 arg.parm = sc->arg_parm[arg.idx]; 1842 printed += sc->arg_scnprintf[arg.idx](bf + printed, 1843 size - printed, &arg); 1844 } else { 1845 printed += scnprintf(bf + printed, size - printed, 1846 "%ld", val); 1847 } 1848 } 1849 } else { 1850 int i = 0; 1851 1852 while (i < 6) { 1853 /* special care for unaligned accesses */ 1854 p = args + sizeof(unsigned long) * i; 1855 memcpy(&val, p, sizeof(val)); 1856 printed += scnprintf(bf + printed, size - printed, 1857 "%sarg%d: %ld", 1858 printed ? ", " : "", i, val); 1859 ++i; 1860 } 1861 } 1862 1863 return printed; 1864 } 1865 1866 typedef int (*tracepoint_handler)(struct trace *trace, struct perf_evsel *evsel, 1867 union perf_event *event, 1868 struct perf_sample *sample); 1869 1870 static struct syscall *trace__syscall_info(struct trace *trace, 1871 struct perf_evsel *evsel, int id) 1872 { 1873 1874 if (id < 0) { 1875 1876 /* 1877 * XXX: Noticed on x86_64, reproduced as far back as 3.0.36, haven't tried 1878 * before that, leaving at a higher verbosity level till that is 1879 * explained. Reproduced with plain ftrace with: 1880 * 1881 * echo 1 > /t/events/raw_syscalls/sys_exit/enable 1882 * grep "NR -1 " /t/trace_pipe 1883 * 1884 * After generating some load on the machine. 1885 */ 1886 if (verbose > 1) { 1887 static u64 n; 1888 fprintf(trace->output, "Invalid syscall %d id, skipping (%s, %" PRIu64 ") ...\n", 1889 id, perf_evsel__name(evsel), ++n); 1890 } 1891 return NULL; 1892 } 1893 1894 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL) && 1895 trace__read_syscall_info(trace, id)) 1896 goto out_cant_read; 1897 1898 if ((id > trace->syscalls.max || trace->syscalls.table[id].name == NULL)) 1899 goto out_cant_read; 1900 1901 return &trace->syscalls.table[id]; 1902 1903 out_cant_read: 1904 if (verbose) { 1905 fprintf(trace->output, "Problems reading syscall %d", id); 1906 if (id <= trace->syscalls.max && trace->syscalls.table[id].name != NULL) 1907 fprintf(trace->output, "(%s)", trace->syscalls.table[id].name); 1908 fputs(" information\n", trace->output); 1909 } 1910 return NULL; 1911 } 1912 1913 static void thread__update_stats(struct thread_trace *ttrace, 1914 int id, struct perf_sample *sample) 1915 { 1916 struct int_node *inode; 1917 struct stats *stats; 1918 u64 duration = 0; 1919 1920 inode = intlist__findnew(ttrace->syscall_stats, id); 1921 if (inode == NULL) 1922 return; 1923 1924 stats = inode->priv; 1925 if (stats == NULL) { 1926 stats = malloc(sizeof(struct stats)); 1927 if (stats == NULL) 1928 return; 1929 init_stats(stats); 1930 inode->priv = stats; 1931 } 1932 1933 if (ttrace->entry_time && sample->time > ttrace->entry_time) 1934 duration = sample->time - ttrace->entry_time; 1935 1936 update_stats(stats, duration); 1937 } 1938 1939 static int trace__printf_interrupted_entry(struct trace *trace, struct perf_sample *sample) 1940 { 1941 struct thread_trace *ttrace; 1942 u64 duration; 1943 size_t printed; 1944 1945 if (trace->current == NULL) 1946 return 0; 1947 1948 ttrace = thread__priv(trace->current); 1949 1950 if (!ttrace->entry_pending) 1951 return 0; 1952 1953 duration = sample->time - ttrace->entry_time; 1954 1955 printed = trace__fprintf_entry_head(trace, trace->current, duration, sample->time, trace->output); 1956 printed += fprintf(trace->output, "%-70s) ...\n", ttrace->entry_str); 1957 ttrace->entry_pending = false; 1958 1959 return printed; 1960 } 1961 1962 static int trace__sys_enter(struct trace *trace, struct perf_evsel *evsel, 1963 union perf_event *event __maybe_unused, 1964 struct perf_sample *sample) 1965 { 1966 char *msg; 1967 void *args; 1968 size_t printed = 0; 1969 struct thread *thread; 1970 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1; 1971 struct syscall *sc = trace__syscall_info(trace, evsel, id); 1972 struct thread_trace *ttrace; 1973 1974 if (sc == NULL) 1975 return -1; 1976 1977 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); 1978 ttrace = thread__trace(thread, trace->output); 1979 if (ttrace == NULL) 1980 goto out_put; 1981 1982 args = perf_evsel__sc_tp_ptr(evsel, args, sample); 1983 1984 if (ttrace->entry_str == NULL) { 1985 ttrace->entry_str = malloc(trace__entry_str_size); 1986 if (!ttrace->entry_str) 1987 goto out_put; 1988 } 1989 1990 if (!trace->summary_only) 1991 trace__printf_interrupted_entry(trace, sample); 1992 1993 ttrace->entry_time = sample->time; 1994 msg = ttrace->entry_str; 1995 printed += scnprintf(msg + printed, trace__entry_str_size - printed, "%s(", sc->name); 1996 1997 printed += syscall__scnprintf_args(sc, msg + printed, trace__entry_str_size - printed, 1998 args, trace, thread); 1999 2000 if (sc->is_exit) { 2001 if (!trace->duration_filter && !trace->summary_only) { 2002 trace__fprintf_entry_head(trace, thread, 1, sample->time, trace->output); 2003 fprintf(trace->output, "%-70s\n", ttrace->entry_str); 2004 } 2005 } else { 2006 ttrace->entry_pending = true; 2007 /* See trace__vfs_getname & trace__sys_exit */ 2008 ttrace->filename.pending_open = false; 2009 } 2010 2011 if (trace->current != thread) { 2012 thread__put(trace->current); 2013 trace->current = thread__get(thread); 2014 } 2015 err = 0; 2016 out_put: 2017 thread__put(thread); 2018 return err; 2019 } 2020 2021 static int trace__sys_exit(struct trace *trace, struct perf_evsel *evsel, 2022 union perf_event *event __maybe_unused, 2023 struct perf_sample *sample) 2024 { 2025 long ret; 2026 u64 duration = 0; 2027 struct thread *thread; 2028 int id = perf_evsel__sc_tp_uint(evsel, id, sample), err = -1; 2029 struct syscall *sc = trace__syscall_info(trace, evsel, id); 2030 struct thread_trace *ttrace; 2031 2032 if (sc == NULL) 2033 return -1; 2034 2035 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); 2036 ttrace = thread__trace(thread, trace->output); 2037 if (ttrace == NULL) 2038 goto out_put; 2039 2040 if (trace->summary) 2041 thread__update_stats(ttrace, id, sample); 2042 2043 ret = perf_evsel__sc_tp_uint(evsel, ret, sample); 2044 2045 if (id == trace->audit.open_id && ret >= 0 && ttrace->filename.pending_open) { 2046 trace__set_fd_pathname(thread, ret, ttrace->filename.name); 2047 ttrace->filename.pending_open = false; 2048 ++trace->stats.vfs_getname; 2049 } 2050 2051 ttrace->exit_time = sample->time; 2052 2053 if (ttrace->entry_time) { 2054 duration = sample->time - ttrace->entry_time; 2055 if (trace__filter_duration(trace, duration)) 2056 goto out; 2057 } else if (trace->duration_filter) 2058 goto out; 2059 2060 if (trace->summary_only) 2061 goto out; 2062 2063 trace__fprintf_entry_head(trace, thread, duration, sample->time, trace->output); 2064 2065 if (ttrace->entry_pending) { 2066 fprintf(trace->output, "%-70s", ttrace->entry_str); 2067 } else { 2068 fprintf(trace->output, " ... ["); 2069 color_fprintf(trace->output, PERF_COLOR_YELLOW, "continued"); 2070 fprintf(trace->output, "]: %s()", sc->name); 2071 } 2072 2073 if (sc->fmt == NULL) { 2074 signed_print: 2075 fprintf(trace->output, ") = %ld", ret); 2076 } else if (ret < 0 && sc->fmt->errmsg) { 2077 char bf[STRERR_BUFSIZE]; 2078 const char *emsg = strerror_r(-ret, bf, sizeof(bf)), 2079 *e = audit_errno_to_name(-ret); 2080 2081 fprintf(trace->output, ") = -1 %s %s", e, emsg); 2082 } else if (ret == 0 && sc->fmt->timeout) 2083 fprintf(trace->output, ") = 0 Timeout"); 2084 else if (sc->fmt->hexret) 2085 fprintf(trace->output, ") = %#lx", ret); 2086 else 2087 goto signed_print; 2088 2089 fputc('\n', trace->output); 2090 out: 2091 ttrace->entry_pending = false; 2092 err = 0; 2093 out_put: 2094 thread__put(thread); 2095 return err; 2096 } 2097 2098 static int trace__vfs_getname(struct trace *trace, struct perf_evsel *evsel, 2099 union perf_event *event __maybe_unused, 2100 struct perf_sample *sample) 2101 { 2102 struct thread *thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); 2103 struct thread_trace *ttrace; 2104 size_t filename_len, entry_str_len, to_move; 2105 ssize_t remaining_space; 2106 char *pos; 2107 const char *filename = perf_evsel__rawptr(evsel, sample, "pathname"); 2108 2109 if (!thread) 2110 goto out; 2111 2112 ttrace = thread__priv(thread); 2113 if (!ttrace) 2114 goto out; 2115 2116 filename_len = strlen(filename); 2117 2118 if (ttrace->filename.namelen < filename_len) { 2119 char *f = realloc(ttrace->filename.name, filename_len + 1); 2120 2121 if (f == NULL) 2122 goto out; 2123 2124 ttrace->filename.namelen = filename_len; 2125 ttrace->filename.name = f; 2126 } 2127 2128 strcpy(ttrace->filename.name, filename); 2129 ttrace->filename.pending_open = true; 2130 2131 if (!ttrace->filename.ptr) 2132 goto out; 2133 2134 entry_str_len = strlen(ttrace->entry_str); 2135 remaining_space = trace__entry_str_size - entry_str_len - 1; /* \0 */ 2136 if (remaining_space <= 0) 2137 goto out; 2138 2139 if (filename_len > (size_t)remaining_space) { 2140 filename += filename_len - remaining_space; 2141 filename_len = remaining_space; 2142 } 2143 2144 to_move = entry_str_len - ttrace->filename.entry_str_pos + 1; /* \0 */ 2145 pos = ttrace->entry_str + ttrace->filename.entry_str_pos; 2146 memmove(pos + filename_len, pos, to_move); 2147 memcpy(pos, filename, filename_len); 2148 2149 ttrace->filename.ptr = 0; 2150 ttrace->filename.entry_str_pos = 0; 2151 out: 2152 return 0; 2153 } 2154 2155 static int trace__sched_stat_runtime(struct trace *trace, struct perf_evsel *evsel, 2156 union perf_event *event __maybe_unused, 2157 struct perf_sample *sample) 2158 { 2159 u64 runtime = perf_evsel__intval(evsel, sample, "runtime"); 2160 double runtime_ms = (double)runtime / NSEC_PER_MSEC; 2161 struct thread *thread = machine__findnew_thread(trace->host, 2162 sample->pid, 2163 sample->tid); 2164 struct thread_trace *ttrace = thread__trace(thread, trace->output); 2165 2166 if (ttrace == NULL) 2167 goto out_dump; 2168 2169 ttrace->runtime_ms += runtime_ms; 2170 trace->runtime_ms += runtime_ms; 2171 thread__put(thread); 2172 return 0; 2173 2174 out_dump: 2175 fprintf(trace->output, "%s: comm=%s,pid=%u,runtime=%" PRIu64 ",vruntime=%" PRIu64 ")\n", 2176 evsel->name, 2177 perf_evsel__strval(evsel, sample, "comm"), 2178 (pid_t)perf_evsel__intval(evsel, sample, "pid"), 2179 runtime, 2180 perf_evsel__intval(evsel, sample, "vruntime")); 2181 thread__put(thread); 2182 return 0; 2183 } 2184 2185 static void bpf_output__printer(enum binary_printer_ops op, 2186 unsigned int val, void *extra) 2187 { 2188 FILE *output = extra; 2189 unsigned char ch = (unsigned char)val; 2190 2191 switch (op) { 2192 case BINARY_PRINT_CHAR_DATA: 2193 fprintf(output, "%c", isprint(ch) ? ch : '.'); 2194 break; 2195 case BINARY_PRINT_DATA_BEGIN: 2196 case BINARY_PRINT_LINE_BEGIN: 2197 case BINARY_PRINT_ADDR: 2198 case BINARY_PRINT_NUM_DATA: 2199 case BINARY_PRINT_NUM_PAD: 2200 case BINARY_PRINT_SEP: 2201 case BINARY_PRINT_CHAR_PAD: 2202 case BINARY_PRINT_LINE_END: 2203 case BINARY_PRINT_DATA_END: 2204 default: 2205 break; 2206 } 2207 } 2208 2209 static void bpf_output__fprintf(struct trace *trace, 2210 struct perf_sample *sample) 2211 { 2212 print_binary(sample->raw_data, sample->raw_size, 8, 2213 bpf_output__printer, trace->output); 2214 } 2215 2216 static int trace__event_handler(struct trace *trace, struct perf_evsel *evsel, 2217 union perf_event *event __maybe_unused, 2218 struct perf_sample *sample) 2219 { 2220 trace__printf_interrupted_entry(trace, sample); 2221 trace__fprintf_tstamp(trace, sample->time, trace->output); 2222 2223 if (trace->trace_syscalls) 2224 fprintf(trace->output, "( ): "); 2225 2226 fprintf(trace->output, "%s:", evsel->name); 2227 2228 if (perf_evsel__is_bpf_output(evsel)) { 2229 bpf_output__fprintf(trace, sample); 2230 } else if (evsel->tp_format) { 2231 event_format__fprintf(evsel->tp_format, sample->cpu, 2232 sample->raw_data, sample->raw_size, 2233 trace->output); 2234 } 2235 2236 fprintf(trace->output, ")\n"); 2237 return 0; 2238 } 2239 2240 static void print_location(FILE *f, struct perf_sample *sample, 2241 struct addr_location *al, 2242 bool print_dso, bool print_sym) 2243 { 2244 2245 if ((verbose || print_dso) && al->map) 2246 fprintf(f, "%s@", al->map->dso->long_name); 2247 2248 if ((verbose || print_sym) && al->sym) 2249 fprintf(f, "%s+0x%" PRIx64, al->sym->name, 2250 al->addr - al->sym->start); 2251 else if (al->map) 2252 fprintf(f, "0x%" PRIx64, al->addr); 2253 else 2254 fprintf(f, "0x%" PRIx64, sample->addr); 2255 } 2256 2257 static int trace__pgfault(struct trace *trace, 2258 struct perf_evsel *evsel, 2259 union perf_event *event, 2260 struct perf_sample *sample) 2261 { 2262 struct thread *thread; 2263 u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK; 2264 struct addr_location al; 2265 char map_type = 'd'; 2266 struct thread_trace *ttrace; 2267 int err = -1; 2268 2269 thread = machine__findnew_thread(trace->host, sample->pid, sample->tid); 2270 ttrace = thread__trace(thread, trace->output); 2271 if (ttrace == NULL) 2272 goto out_put; 2273 2274 if (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ) 2275 ttrace->pfmaj++; 2276 else 2277 ttrace->pfmin++; 2278 2279 if (trace->summary_only) 2280 goto out; 2281 2282 thread__find_addr_location(thread, cpumode, MAP__FUNCTION, 2283 sample->ip, &al); 2284 2285 trace__fprintf_entry_head(trace, thread, 0, sample->time, trace->output); 2286 2287 fprintf(trace->output, "%sfault [", 2288 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ ? 2289 "maj" : "min"); 2290 2291 print_location(trace->output, sample, &al, false, true); 2292 2293 fprintf(trace->output, "] => "); 2294 2295 thread__find_addr_location(thread, cpumode, MAP__VARIABLE, 2296 sample->addr, &al); 2297 2298 if (!al.map) { 2299 thread__find_addr_location(thread, cpumode, 2300 MAP__FUNCTION, sample->addr, &al); 2301 2302 if (al.map) 2303 map_type = 'x'; 2304 else 2305 map_type = '?'; 2306 } 2307 2308 print_location(trace->output, sample, &al, true, false); 2309 2310 fprintf(trace->output, " (%c%c)\n", map_type, al.level); 2311 out: 2312 err = 0; 2313 out_put: 2314 thread__put(thread); 2315 return err; 2316 } 2317 2318 static bool skip_sample(struct trace *trace, struct perf_sample *sample) 2319 { 2320 if ((trace->pid_list && intlist__find(trace->pid_list, sample->pid)) || 2321 (trace->tid_list && intlist__find(trace->tid_list, sample->tid))) 2322 return false; 2323 2324 if (trace->pid_list || trace->tid_list) 2325 return true; 2326 2327 return false; 2328 } 2329 2330 static int trace__process_sample(struct perf_tool *tool, 2331 union perf_event *event, 2332 struct perf_sample *sample, 2333 struct perf_evsel *evsel, 2334 struct machine *machine __maybe_unused) 2335 { 2336 struct trace *trace = container_of(tool, struct trace, tool); 2337 int err = 0; 2338 2339 tracepoint_handler handler = evsel->handler; 2340 2341 if (skip_sample(trace, sample)) 2342 return 0; 2343 2344 if (!trace->full_time && trace->base_time == 0) 2345 trace->base_time = sample->time; 2346 2347 if (handler) { 2348 ++trace->nr_events; 2349 handler(trace, evsel, event, sample); 2350 } 2351 2352 return err; 2353 } 2354 2355 static int parse_target_str(struct trace *trace) 2356 { 2357 if (trace->opts.target.pid) { 2358 trace->pid_list = intlist__new(trace->opts.target.pid); 2359 if (trace->pid_list == NULL) { 2360 pr_err("Error parsing process id string\n"); 2361 return -EINVAL; 2362 } 2363 } 2364 2365 if (trace->opts.target.tid) { 2366 trace->tid_list = intlist__new(trace->opts.target.tid); 2367 if (trace->tid_list == NULL) { 2368 pr_err("Error parsing thread id string\n"); 2369 return -EINVAL; 2370 } 2371 } 2372 2373 return 0; 2374 } 2375 2376 static int trace__record(struct trace *trace, int argc, const char **argv) 2377 { 2378 unsigned int rec_argc, i, j; 2379 const char **rec_argv; 2380 const char * const record_args[] = { 2381 "record", 2382 "-R", 2383 "-m", "1024", 2384 "-c", "1", 2385 }; 2386 2387 const char * const sc_args[] = { "-e", }; 2388 unsigned int sc_args_nr = ARRAY_SIZE(sc_args); 2389 const char * const majpf_args[] = { "-e", "major-faults" }; 2390 unsigned int majpf_args_nr = ARRAY_SIZE(majpf_args); 2391 const char * const minpf_args[] = { "-e", "minor-faults" }; 2392 unsigned int minpf_args_nr = ARRAY_SIZE(minpf_args); 2393 2394 /* +1 is for the event string below */ 2395 rec_argc = ARRAY_SIZE(record_args) + sc_args_nr + 1 + 2396 majpf_args_nr + minpf_args_nr + argc; 2397 rec_argv = calloc(rec_argc + 1, sizeof(char *)); 2398 2399 if (rec_argv == NULL) 2400 return -ENOMEM; 2401 2402 j = 0; 2403 for (i = 0; i < ARRAY_SIZE(record_args); i++) 2404 rec_argv[j++] = record_args[i]; 2405 2406 if (trace->trace_syscalls) { 2407 for (i = 0; i < sc_args_nr; i++) 2408 rec_argv[j++] = sc_args[i]; 2409 2410 /* event string may be different for older kernels - e.g., RHEL6 */ 2411 if (is_valid_tracepoint("raw_syscalls:sys_enter")) 2412 rec_argv[j++] = "raw_syscalls:sys_enter,raw_syscalls:sys_exit"; 2413 else if (is_valid_tracepoint("syscalls:sys_enter")) 2414 rec_argv[j++] = "syscalls:sys_enter,syscalls:sys_exit"; 2415 else { 2416 pr_err("Neither raw_syscalls nor syscalls events exist.\n"); 2417 return -1; 2418 } 2419 } 2420 2421 if (trace->trace_pgfaults & TRACE_PFMAJ) 2422 for (i = 0; i < majpf_args_nr; i++) 2423 rec_argv[j++] = majpf_args[i]; 2424 2425 if (trace->trace_pgfaults & TRACE_PFMIN) 2426 for (i = 0; i < minpf_args_nr; i++) 2427 rec_argv[j++] = minpf_args[i]; 2428 2429 for (i = 0; i < (unsigned int)argc; i++) 2430 rec_argv[j++] = argv[i]; 2431 2432 return cmd_record(j, rec_argv, NULL); 2433 } 2434 2435 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp); 2436 2437 static bool perf_evlist__add_vfs_getname(struct perf_evlist *evlist) 2438 { 2439 struct perf_evsel *evsel = perf_evsel__newtp("probe", "vfs_getname"); 2440 2441 if (IS_ERR(evsel)) 2442 return false; 2443 2444 if (perf_evsel__field(evsel, "pathname") == NULL) { 2445 perf_evsel__delete(evsel); 2446 return false; 2447 } 2448 2449 evsel->handler = trace__vfs_getname; 2450 perf_evlist__add(evlist, evsel); 2451 return true; 2452 } 2453 2454 static int perf_evlist__add_pgfault(struct perf_evlist *evlist, 2455 u64 config) 2456 { 2457 struct perf_evsel *evsel; 2458 struct perf_event_attr attr = { 2459 .type = PERF_TYPE_SOFTWARE, 2460 .mmap_data = 1, 2461 }; 2462 2463 attr.config = config; 2464 attr.sample_period = 1; 2465 2466 event_attr_init(&attr); 2467 2468 evsel = perf_evsel__new(&attr); 2469 if (!evsel) 2470 return -ENOMEM; 2471 2472 evsel->handler = trace__pgfault; 2473 perf_evlist__add(evlist, evsel); 2474 2475 return 0; 2476 } 2477 2478 static void trace__handle_event(struct trace *trace, union perf_event *event, struct perf_sample *sample) 2479 { 2480 const u32 type = event->header.type; 2481 struct perf_evsel *evsel; 2482 2483 if (!trace->full_time && trace->base_time == 0) 2484 trace->base_time = sample->time; 2485 2486 if (type != PERF_RECORD_SAMPLE) { 2487 trace__process_event(trace, trace->host, event, sample); 2488 return; 2489 } 2490 2491 evsel = perf_evlist__id2evsel(trace->evlist, sample->id); 2492 if (evsel == NULL) { 2493 fprintf(trace->output, "Unknown tp ID %" PRIu64 ", skipping...\n", sample->id); 2494 return; 2495 } 2496 2497 if (evsel->attr.type == PERF_TYPE_TRACEPOINT && 2498 sample->raw_data == NULL) { 2499 fprintf(trace->output, "%s sample with no payload for tid: %d, cpu %d, raw_size=%d, skipping...\n", 2500 perf_evsel__name(evsel), sample->tid, 2501 sample->cpu, sample->raw_size); 2502 } else { 2503 tracepoint_handler handler = evsel->handler; 2504 handler(trace, evsel, event, sample); 2505 } 2506 } 2507 2508 static int trace__add_syscall_newtp(struct trace *trace) 2509 { 2510 int ret = -1; 2511 struct perf_evlist *evlist = trace->evlist; 2512 struct perf_evsel *sys_enter, *sys_exit; 2513 2514 sys_enter = perf_evsel__syscall_newtp("sys_enter", trace__sys_enter); 2515 if (sys_enter == NULL) 2516 goto out; 2517 2518 if (perf_evsel__init_sc_tp_ptr_field(sys_enter, args)) 2519 goto out_delete_sys_enter; 2520 2521 sys_exit = perf_evsel__syscall_newtp("sys_exit", trace__sys_exit); 2522 if (sys_exit == NULL) 2523 goto out_delete_sys_enter; 2524 2525 if (perf_evsel__init_sc_tp_uint_field(sys_exit, ret)) 2526 goto out_delete_sys_exit; 2527 2528 perf_evlist__add(evlist, sys_enter); 2529 perf_evlist__add(evlist, sys_exit); 2530 2531 trace->syscalls.events.sys_enter = sys_enter; 2532 trace->syscalls.events.sys_exit = sys_exit; 2533 2534 ret = 0; 2535 out: 2536 return ret; 2537 2538 out_delete_sys_exit: 2539 perf_evsel__delete_priv(sys_exit); 2540 out_delete_sys_enter: 2541 perf_evsel__delete_priv(sys_enter); 2542 goto out; 2543 } 2544 2545 static int trace__set_ev_qualifier_filter(struct trace *trace) 2546 { 2547 int err = -1; 2548 char *filter = asprintf_expr_inout_ints("id", !trace->not_ev_qualifier, 2549 trace->ev_qualifier_ids.nr, 2550 trace->ev_qualifier_ids.entries); 2551 2552 if (filter == NULL) 2553 goto out_enomem; 2554 2555 if (!perf_evsel__append_filter(trace->syscalls.events.sys_enter, "&&", filter)) 2556 err = perf_evsel__append_filter(trace->syscalls.events.sys_exit, "&&", filter); 2557 2558 free(filter); 2559 out: 2560 return err; 2561 out_enomem: 2562 errno = ENOMEM; 2563 goto out; 2564 } 2565 2566 static int trace__run(struct trace *trace, int argc, const char **argv) 2567 { 2568 struct perf_evlist *evlist = trace->evlist; 2569 struct perf_evsel *evsel; 2570 int err = -1, i; 2571 unsigned long before; 2572 const bool forks = argc > 0; 2573 bool draining = false; 2574 2575 trace->live = true; 2576 2577 if (trace->trace_syscalls && trace__add_syscall_newtp(trace)) 2578 goto out_error_raw_syscalls; 2579 2580 if (trace->trace_syscalls) 2581 trace->vfs_getname = perf_evlist__add_vfs_getname(evlist); 2582 2583 if ((trace->trace_pgfaults & TRACE_PFMAJ) && 2584 perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MAJ)) { 2585 goto out_error_mem; 2586 } 2587 2588 if ((trace->trace_pgfaults & TRACE_PFMIN) && 2589 perf_evlist__add_pgfault(evlist, PERF_COUNT_SW_PAGE_FAULTS_MIN)) 2590 goto out_error_mem; 2591 2592 if (trace->sched && 2593 perf_evlist__add_newtp(evlist, "sched", "sched_stat_runtime", 2594 trace__sched_stat_runtime)) 2595 goto out_error_sched_stat_runtime; 2596 2597 err = perf_evlist__create_maps(evlist, &trace->opts.target); 2598 if (err < 0) { 2599 fprintf(trace->output, "Problems parsing the target to trace, check your options!\n"); 2600 goto out_delete_evlist; 2601 } 2602 2603 err = trace__symbols_init(trace, evlist); 2604 if (err < 0) { 2605 fprintf(trace->output, "Problems initializing symbol libraries!\n"); 2606 goto out_delete_evlist; 2607 } 2608 2609 perf_evlist__config(evlist, &trace->opts); 2610 2611 signal(SIGCHLD, sig_handler); 2612 signal(SIGINT, sig_handler); 2613 2614 if (forks) { 2615 err = perf_evlist__prepare_workload(evlist, &trace->opts.target, 2616 argv, false, NULL); 2617 if (err < 0) { 2618 fprintf(trace->output, "Couldn't run the workload!\n"); 2619 goto out_delete_evlist; 2620 } 2621 } 2622 2623 err = perf_evlist__open(evlist); 2624 if (err < 0) 2625 goto out_error_open; 2626 2627 err = bpf__apply_obj_config(); 2628 if (err) { 2629 char errbuf[BUFSIZ]; 2630 2631 bpf__strerror_apply_obj_config(err, errbuf, sizeof(errbuf)); 2632 pr_err("ERROR: Apply config to BPF failed: %s\n", 2633 errbuf); 2634 goto out_error_open; 2635 } 2636 2637 /* 2638 * Better not use !target__has_task() here because we need to cover the 2639 * case where no threads were specified in the command line, but a 2640 * workload was, and in that case we will fill in the thread_map when 2641 * we fork the workload in perf_evlist__prepare_workload. 2642 */ 2643 if (trace->filter_pids.nr > 0) 2644 err = perf_evlist__set_filter_pids(evlist, trace->filter_pids.nr, trace->filter_pids.entries); 2645 else if (thread_map__pid(evlist->threads, 0) == -1) 2646 err = perf_evlist__set_filter_pid(evlist, getpid()); 2647 2648 if (err < 0) 2649 goto out_error_mem; 2650 2651 if (trace->ev_qualifier_ids.nr > 0) { 2652 err = trace__set_ev_qualifier_filter(trace); 2653 if (err < 0) 2654 goto out_errno; 2655 2656 pr_debug("event qualifier tracepoint filter: %s\n", 2657 trace->syscalls.events.sys_exit->filter); 2658 } 2659 2660 err = perf_evlist__apply_filters(evlist, &evsel); 2661 if (err < 0) 2662 goto out_error_apply_filters; 2663 2664 err = perf_evlist__mmap(evlist, trace->opts.mmap_pages, false); 2665 if (err < 0) 2666 goto out_error_mmap; 2667 2668 if (!target__none(&trace->opts.target)) 2669 perf_evlist__enable(evlist); 2670 2671 if (forks) 2672 perf_evlist__start_workload(evlist); 2673 2674 trace->multiple_threads = thread_map__pid(evlist->threads, 0) == -1 || 2675 evlist->threads->nr > 1 || 2676 perf_evlist__first(evlist)->attr.inherit; 2677 again: 2678 before = trace->nr_events; 2679 2680 for (i = 0; i < evlist->nr_mmaps; i++) { 2681 union perf_event *event; 2682 2683 while ((event = perf_evlist__mmap_read(evlist, i)) != NULL) { 2684 struct perf_sample sample; 2685 2686 ++trace->nr_events; 2687 2688 err = perf_evlist__parse_sample(evlist, event, &sample); 2689 if (err) { 2690 fprintf(trace->output, "Can't parse sample, err = %d, skipping...\n", err); 2691 goto next_event; 2692 } 2693 2694 trace__handle_event(trace, event, &sample); 2695 next_event: 2696 perf_evlist__mmap_consume(evlist, i); 2697 2698 if (interrupted) 2699 goto out_disable; 2700 2701 if (done && !draining) { 2702 perf_evlist__disable(evlist); 2703 draining = true; 2704 } 2705 } 2706 } 2707 2708 if (trace->nr_events == before) { 2709 int timeout = done ? 100 : -1; 2710 2711 if (!draining && perf_evlist__poll(evlist, timeout) > 0) { 2712 if (perf_evlist__filter_pollfd(evlist, POLLERR | POLLHUP) == 0) 2713 draining = true; 2714 2715 goto again; 2716 } 2717 } else { 2718 goto again; 2719 } 2720 2721 out_disable: 2722 thread__zput(trace->current); 2723 2724 perf_evlist__disable(evlist); 2725 2726 if (!err) { 2727 if (trace->summary) 2728 trace__fprintf_thread_summary(trace, trace->output); 2729 2730 if (trace->show_tool_stats) { 2731 fprintf(trace->output, "Stats:\n " 2732 " vfs_getname : %" PRIu64 "\n" 2733 " proc_getname: %" PRIu64 "\n", 2734 trace->stats.vfs_getname, 2735 trace->stats.proc_getname); 2736 } 2737 } 2738 2739 out_delete_evlist: 2740 perf_evlist__delete(evlist); 2741 trace->evlist = NULL; 2742 trace->live = false; 2743 return err; 2744 { 2745 char errbuf[BUFSIZ]; 2746 2747 out_error_sched_stat_runtime: 2748 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "sched", "sched_stat_runtime"); 2749 goto out_error; 2750 2751 out_error_raw_syscalls: 2752 tracing_path__strerror_open_tp(errno, errbuf, sizeof(errbuf), "raw_syscalls", "sys_(enter|exit)"); 2753 goto out_error; 2754 2755 out_error_mmap: 2756 perf_evlist__strerror_mmap(evlist, errno, errbuf, sizeof(errbuf)); 2757 goto out_error; 2758 2759 out_error_open: 2760 perf_evlist__strerror_open(evlist, errno, errbuf, sizeof(errbuf)); 2761 2762 out_error: 2763 fprintf(trace->output, "%s\n", errbuf); 2764 goto out_delete_evlist; 2765 2766 out_error_apply_filters: 2767 fprintf(trace->output, 2768 "Failed to set filter \"%s\" on event %s with %d (%s)\n", 2769 evsel->filter, perf_evsel__name(evsel), errno, 2770 strerror_r(errno, errbuf, sizeof(errbuf))); 2771 goto out_delete_evlist; 2772 } 2773 out_error_mem: 2774 fprintf(trace->output, "Not enough memory to run!\n"); 2775 goto out_delete_evlist; 2776 2777 out_errno: 2778 fprintf(trace->output, "errno=%d,%s\n", errno, strerror(errno)); 2779 goto out_delete_evlist; 2780 } 2781 2782 static int trace__replay(struct trace *trace) 2783 { 2784 const struct perf_evsel_str_handler handlers[] = { 2785 { "probe:vfs_getname", trace__vfs_getname, }, 2786 }; 2787 struct perf_data_file file = { 2788 .path = input_name, 2789 .mode = PERF_DATA_MODE_READ, 2790 .force = trace->force, 2791 }; 2792 struct perf_session *session; 2793 struct perf_evsel *evsel; 2794 int err = -1; 2795 2796 trace->tool.sample = trace__process_sample; 2797 trace->tool.mmap = perf_event__process_mmap; 2798 trace->tool.mmap2 = perf_event__process_mmap2; 2799 trace->tool.comm = perf_event__process_comm; 2800 trace->tool.exit = perf_event__process_exit; 2801 trace->tool.fork = perf_event__process_fork; 2802 trace->tool.attr = perf_event__process_attr; 2803 trace->tool.tracing_data = perf_event__process_tracing_data; 2804 trace->tool.build_id = perf_event__process_build_id; 2805 2806 trace->tool.ordered_events = true; 2807 trace->tool.ordering_requires_timestamps = true; 2808 2809 /* add tid to output */ 2810 trace->multiple_threads = true; 2811 2812 session = perf_session__new(&file, false, &trace->tool); 2813 if (session == NULL) 2814 return -1; 2815 2816 if (symbol__init(&session->header.env) < 0) 2817 goto out; 2818 2819 trace->host = &session->machines.host; 2820 2821 err = perf_session__set_tracepoints_handlers(session, handlers); 2822 if (err) 2823 goto out; 2824 2825 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, 2826 "raw_syscalls:sys_enter"); 2827 /* older kernels have syscalls tp versus raw_syscalls */ 2828 if (evsel == NULL) 2829 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, 2830 "syscalls:sys_enter"); 2831 2832 if (evsel && 2833 (perf_evsel__init_syscall_tp(evsel, trace__sys_enter) < 0 || 2834 perf_evsel__init_sc_tp_ptr_field(evsel, args))) { 2835 pr_err("Error during initialize raw_syscalls:sys_enter event\n"); 2836 goto out; 2837 } 2838 2839 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, 2840 "raw_syscalls:sys_exit"); 2841 if (evsel == NULL) 2842 evsel = perf_evlist__find_tracepoint_by_name(session->evlist, 2843 "syscalls:sys_exit"); 2844 if (evsel && 2845 (perf_evsel__init_syscall_tp(evsel, trace__sys_exit) < 0 || 2846 perf_evsel__init_sc_tp_uint_field(evsel, ret))) { 2847 pr_err("Error during initialize raw_syscalls:sys_exit event\n"); 2848 goto out; 2849 } 2850 2851 evlist__for_each(session->evlist, evsel) { 2852 if (evsel->attr.type == PERF_TYPE_SOFTWARE && 2853 (evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MAJ || 2854 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS_MIN || 2855 evsel->attr.config == PERF_COUNT_SW_PAGE_FAULTS)) 2856 evsel->handler = trace__pgfault; 2857 } 2858 2859 err = parse_target_str(trace); 2860 if (err != 0) 2861 goto out; 2862 2863 setup_pager(); 2864 2865 err = perf_session__process_events(session); 2866 if (err) 2867 pr_err("Failed to process events, error %d", err); 2868 2869 else if (trace->summary) 2870 trace__fprintf_thread_summary(trace, trace->output); 2871 2872 out: 2873 perf_session__delete(session); 2874 2875 return err; 2876 } 2877 2878 static size_t trace__fprintf_threads_header(FILE *fp) 2879 { 2880 size_t printed; 2881 2882 printed = fprintf(fp, "\n Summary of events:\n\n"); 2883 2884 return printed; 2885 } 2886 2887 static size_t thread__dump_stats(struct thread_trace *ttrace, 2888 struct trace *trace, FILE *fp) 2889 { 2890 struct stats *stats; 2891 size_t printed = 0; 2892 struct syscall *sc; 2893 struct int_node *inode = intlist__first(ttrace->syscall_stats); 2894 2895 if (inode == NULL) 2896 return 0; 2897 2898 printed += fprintf(fp, "\n"); 2899 2900 printed += fprintf(fp, " syscall calls total min avg max stddev\n"); 2901 printed += fprintf(fp, " (msec) (msec) (msec) (msec) (%%)\n"); 2902 printed += fprintf(fp, " --------------- -------- --------- --------- --------- --------- ------\n"); 2903 2904 /* each int_node is a syscall */ 2905 while (inode) { 2906 stats = inode->priv; 2907 if (stats) { 2908 double min = (double)(stats->min) / NSEC_PER_MSEC; 2909 double max = (double)(stats->max) / NSEC_PER_MSEC; 2910 double avg = avg_stats(stats); 2911 double pct; 2912 u64 n = (u64) stats->n; 2913 2914 pct = avg ? 100.0 * stddev_stats(stats)/avg : 0.0; 2915 avg /= NSEC_PER_MSEC; 2916 2917 sc = &trace->syscalls.table[inode->i]; 2918 printed += fprintf(fp, " %-15s", sc->name); 2919 printed += fprintf(fp, " %8" PRIu64 " %9.3f %9.3f %9.3f", 2920 n, avg * n, min, avg); 2921 printed += fprintf(fp, " %9.3f %9.2f%%\n", max, pct); 2922 } 2923 2924 inode = intlist__next(inode); 2925 } 2926 2927 printed += fprintf(fp, "\n\n"); 2928 2929 return printed; 2930 } 2931 2932 /* struct used to pass data to per-thread function */ 2933 struct summary_data { 2934 FILE *fp; 2935 struct trace *trace; 2936 size_t printed; 2937 }; 2938 2939 static int trace__fprintf_one_thread(struct thread *thread, void *priv) 2940 { 2941 struct summary_data *data = priv; 2942 FILE *fp = data->fp; 2943 size_t printed = data->printed; 2944 struct trace *trace = data->trace; 2945 struct thread_trace *ttrace = thread__priv(thread); 2946 double ratio; 2947 2948 if (ttrace == NULL) 2949 return 0; 2950 2951 ratio = (double)ttrace->nr_events / trace->nr_events * 100.0; 2952 2953 printed += fprintf(fp, " %s (%d), ", thread__comm_str(thread), thread->tid); 2954 printed += fprintf(fp, "%lu events, ", ttrace->nr_events); 2955 printed += fprintf(fp, "%.1f%%", ratio); 2956 if (ttrace->pfmaj) 2957 printed += fprintf(fp, ", %lu majfaults", ttrace->pfmaj); 2958 if (ttrace->pfmin) 2959 printed += fprintf(fp, ", %lu minfaults", ttrace->pfmin); 2960 printed += fprintf(fp, ", %.3f msec\n", ttrace->runtime_ms); 2961 printed += thread__dump_stats(ttrace, trace, fp); 2962 2963 data->printed += printed; 2964 2965 return 0; 2966 } 2967 2968 static size_t trace__fprintf_thread_summary(struct trace *trace, FILE *fp) 2969 { 2970 struct summary_data data = { 2971 .fp = fp, 2972 .trace = trace 2973 }; 2974 data.printed = trace__fprintf_threads_header(fp); 2975 2976 machine__for_each_thread(trace->host, trace__fprintf_one_thread, &data); 2977 2978 return data.printed; 2979 } 2980 2981 static int trace__set_duration(const struct option *opt, const char *str, 2982 int unset __maybe_unused) 2983 { 2984 struct trace *trace = opt->value; 2985 2986 trace->duration_filter = atof(str); 2987 return 0; 2988 } 2989 2990 static int trace__set_filter_pids(const struct option *opt, const char *str, 2991 int unset __maybe_unused) 2992 { 2993 int ret = -1; 2994 size_t i; 2995 struct trace *trace = opt->value; 2996 /* 2997 * FIXME: introduce a intarray class, plain parse csv and create a 2998 * { int nr, int entries[] } struct... 2999 */ 3000 struct intlist *list = intlist__new(str); 3001 3002 if (list == NULL) 3003 return -1; 3004 3005 i = trace->filter_pids.nr = intlist__nr_entries(list) + 1; 3006 trace->filter_pids.entries = calloc(i, sizeof(pid_t)); 3007 3008 if (trace->filter_pids.entries == NULL) 3009 goto out; 3010 3011 trace->filter_pids.entries[0] = getpid(); 3012 3013 for (i = 1; i < trace->filter_pids.nr; ++i) 3014 trace->filter_pids.entries[i] = intlist__entry(list, i - 1)->i; 3015 3016 intlist__delete(list); 3017 ret = 0; 3018 out: 3019 return ret; 3020 } 3021 3022 static int trace__open_output(struct trace *trace, const char *filename) 3023 { 3024 struct stat st; 3025 3026 if (!stat(filename, &st) && st.st_size) { 3027 char oldname[PATH_MAX]; 3028 3029 scnprintf(oldname, sizeof(oldname), "%s.old", filename); 3030 unlink(oldname); 3031 rename(filename, oldname); 3032 } 3033 3034 trace->output = fopen(filename, "w"); 3035 3036 return trace->output == NULL ? -errno : 0; 3037 } 3038 3039 static int parse_pagefaults(const struct option *opt, const char *str, 3040 int unset __maybe_unused) 3041 { 3042 int *trace_pgfaults = opt->value; 3043 3044 if (strcmp(str, "all") == 0) 3045 *trace_pgfaults |= TRACE_PFMAJ | TRACE_PFMIN; 3046 else if (strcmp(str, "maj") == 0) 3047 *trace_pgfaults |= TRACE_PFMAJ; 3048 else if (strcmp(str, "min") == 0) 3049 *trace_pgfaults |= TRACE_PFMIN; 3050 else 3051 return -1; 3052 3053 return 0; 3054 } 3055 3056 static void evlist__set_evsel_handler(struct perf_evlist *evlist, void *handler) 3057 { 3058 struct perf_evsel *evsel; 3059 3060 evlist__for_each(evlist, evsel) 3061 evsel->handler = handler; 3062 } 3063 3064 int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused) 3065 { 3066 const char *trace_usage[] = { 3067 "perf trace [<options>] [<command>]", 3068 "perf trace [<options>] -- <command> [<options>]", 3069 "perf trace record [<options>] [<command>]", 3070 "perf trace record [<options>] -- <command> [<options>]", 3071 NULL 3072 }; 3073 struct trace trace = { 3074 .audit = { 3075 .machine = audit_detect_machine(), 3076 .open_id = audit_name_to_syscall("open", trace.audit.machine), 3077 }, 3078 .syscalls = { 3079 . max = -1, 3080 }, 3081 .opts = { 3082 .target = { 3083 .uid = UINT_MAX, 3084 .uses_mmap = true, 3085 }, 3086 .user_freq = UINT_MAX, 3087 .user_interval = ULLONG_MAX, 3088 .no_buffering = true, 3089 .mmap_pages = UINT_MAX, 3090 .proc_map_timeout = 500, 3091 }, 3092 .output = stderr, 3093 .show_comm = true, 3094 .trace_syscalls = true, 3095 }; 3096 const char *output_name = NULL; 3097 const char *ev_qualifier_str = NULL; 3098 const struct option trace_options[] = { 3099 OPT_CALLBACK(0, "event", &trace.evlist, "event", 3100 "event selector. use 'perf list' to list available events", 3101 parse_events_option), 3102 OPT_BOOLEAN(0, "comm", &trace.show_comm, 3103 "show the thread COMM next to its id"), 3104 OPT_BOOLEAN(0, "tool_stats", &trace.show_tool_stats, "show tool stats"), 3105 OPT_STRING('e', "expr", &ev_qualifier_str, "expr", "list of syscalls to trace"), 3106 OPT_STRING('o', "output", &output_name, "file", "output file name"), 3107 OPT_STRING('i', "input", &input_name, "file", "Analyze events in file"), 3108 OPT_STRING('p', "pid", &trace.opts.target.pid, "pid", 3109 "trace events on existing process id"), 3110 OPT_STRING('t', "tid", &trace.opts.target.tid, "tid", 3111 "trace events on existing thread id"), 3112 OPT_CALLBACK(0, "filter-pids", &trace, "CSV list of pids", 3113 "pids to filter (by the kernel)", trace__set_filter_pids), 3114 OPT_BOOLEAN('a', "all-cpus", &trace.opts.target.system_wide, 3115 "system-wide collection from all CPUs"), 3116 OPT_STRING('C', "cpu", &trace.opts.target.cpu_list, "cpu", 3117 "list of cpus to monitor"), 3118 OPT_BOOLEAN(0, "no-inherit", &trace.opts.no_inherit, 3119 "child tasks do not inherit counters"), 3120 OPT_CALLBACK('m', "mmap-pages", &trace.opts.mmap_pages, "pages", 3121 "number of mmap data pages", 3122 perf_evlist__parse_mmap_pages), 3123 OPT_STRING('u', "uid", &trace.opts.target.uid_str, "user", 3124 "user to profile"), 3125 OPT_CALLBACK(0, "duration", &trace, "float", 3126 "show only events with duration > N.M ms", 3127 trace__set_duration), 3128 OPT_BOOLEAN(0, "sched", &trace.sched, "show blocking scheduler events"), 3129 OPT_INCR('v', "verbose", &verbose, "be more verbose"), 3130 OPT_BOOLEAN('T', "time", &trace.full_time, 3131 "Show full timestamp, not time relative to first start"), 3132 OPT_BOOLEAN('s', "summary", &trace.summary_only, 3133 "Show only syscall summary with statistics"), 3134 OPT_BOOLEAN('S', "with-summary", &trace.summary, 3135 "Show all syscalls and summary with statistics"), 3136 OPT_CALLBACK_DEFAULT('F', "pf", &trace.trace_pgfaults, "all|maj|min", 3137 "Trace pagefaults", parse_pagefaults, "maj"), 3138 OPT_BOOLEAN(0, "syscalls", &trace.trace_syscalls, "Trace syscalls"), 3139 OPT_BOOLEAN('f', "force", &trace.force, "don't complain, do it"), 3140 OPT_UINTEGER(0, "proc-map-timeout", &trace.opts.proc_map_timeout, 3141 "per thread proc mmap processing timeout in ms"), 3142 OPT_END() 3143 }; 3144 const char * const trace_subcommands[] = { "record", NULL }; 3145 int err; 3146 char bf[BUFSIZ]; 3147 3148 signal(SIGSEGV, sighandler_dump_stack); 3149 signal(SIGFPE, sighandler_dump_stack); 3150 3151 trace.evlist = perf_evlist__new(); 3152 3153 if (trace.evlist == NULL) { 3154 pr_err("Not enough memory to run!\n"); 3155 err = -ENOMEM; 3156 goto out; 3157 } 3158 3159 argc = parse_options_subcommand(argc, argv, trace_options, trace_subcommands, 3160 trace_usage, PARSE_OPT_STOP_AT_NON_OPTION); 3161 3162 if (trace.trace_pgfaults) { 3163 trace.opts.sample_address = true; 3164 trace.opts.sample_time = true; 3165 } 3166 3167 if (trace.evlist->nr_entries > 0) 3168 evlist__set_evsel_handler(trace.evlist, trace__event_handler); 3169 3170 if ((argc >= 1) && (strcmp(argv[0], "record") == 0)) 3171 return trace__record(&trace, argc-1, &argv[1]); 3172 3173 /* summary_only implies summary option, but don't overwrite summary if set */ 3174 if (trace.summary_only) 3175 trace.summary = trace.summary_only; 3176 3177 if (!trace.trace_syscalls && !trace.trace_pgfaults && 3178 trace.evlist->nr_entries == 0 /* Was --events used? */) { 3179 pr_err("Please specify something to trace.\n"); 3180 return -1; 3181 } 3182 3183 if (output_name != NULL) { 3184 err = trace__open_output(&trace, output_name); 3185 if (err < 0) { 3186 perror("failed to create output file"); 3187 goto out; 3188 } 3189 } 3190 3191 if (ev_qualifier_str != NULL) { 3192 const char *s = ev_qualifier_str; 3193 struct strlist_config slist_config = { 3194 .dirname = system_path(STRACE_GROUPS_DIR), 3195 }; 3196 3197 trace.not_ev_qualifier = *s == '!'; 3198 if (trace.not_ev_qualifier) 3199 ++s; 3200 trace.ev_qualifier = strlist__new(s, &slist_config); 3201 if (trace.ev_qualifier == NULL) { 3202 fputs("Not enough memory to parse event qualifier", 3203 trace.output); 3204 err = -ENOMEM; 3205 goto out_close; 3206 } 3207 3208 err = trace__validate_ev_qualifier(&trace); 3209 if (err) 3210 goto out_close; 3211 } 3212 3213 err = target__validate(&trace.opts.target); 3214 if (err) { 3215 target__strerror(&trace.opts.target, err, bf, sizeof(bf)); 3216 fprintf(trace.output, "%s", bf); 3217 goto out_close; 3218 } 3219 3220 err = target__parse_uid(&trace.opts.target); 3221 if (err) { 3222 target__strerror(&trace.opts.target, err, bf, sizeof(bf)); 3223 fprintf(trace.output, "%s", bf); 3224 goto out_close; 3225 } 3226 3227 if (!argc && target__none(&trace.opts.target)) 3228 trace.opts.target.system_wide = true; 3229 3230 if (input_name) 3231 err = trace__replay(&trace); 3232 else 3233 err = trace__run(&trace, argc, argv); 3234 3235 out_close: 3236 if (output_name != NULL) 3237 fclose(trace.output); 3238 out: 3239 return err; 3240 } 3241