1 #include <stdio.h> 2 #include <unistd.h> 3 #include <stdlib.h> 4 #include <fcntl.h> 5 #include <stropts.h> 6 #include <poll.h> 7 #include <string.h> 8 #include <sys/fs/zev.h> 9 #include <errno.h> 10 #include <sys/sysmacros.h> 11 #include <stdarg.h> 12 #include <sys/avl.h> 13 #include <sys/stat.h> 14 15 #define ZEV_DEVICE "/devices/pseudo/zev@0:ctrl" 16 17 #if !defined(offsetof) 18 #define offsetof(s, m) ((size_t)(&(((s *)0)->m))) 19 #endif 20 21 static char *zev_device = ZEV_DEVICE; 22 23 static char *zev_op_name[] = { 24 "ERROR", 25 "MARK", 26 "ZFS_MOUNT", 27 "ZFS_UMOUNT", 28 "ZVOL_WRITE", 29 "ZVOL_TRUNCATE", 30 "ZNODE_CLOSE_AFTER_UPDATE", 31 "ZNODE_CREATE", 32 "ZNODE_MKDIR", 33 "ZNODE_MAKE_XATTR_DIR", 34 "ZNODE_REMOVE", 35 "ZNODE_RMDIR", 36 "ZNODE_LINK", 37 "ZNODE_SYMLINK", 38 "ZNODE_RENAME", 39 "ZNODE_WRITE", 40 "ZNODE_TRUNCATE", 41 "ZNODE_SETATTR", 42 "ZNODE_ACL", 43 NULL 44 }; 45 46 #define MD_STATISTICS 1 47 #define MD_POLL_EVENTS 2 48 #define MD_CHECKSUMS 3 49 #define MD_DEBUG_INFO 4 50 #define MD_LIST_QUEUES 5 51 #define MD_SET_GLOBAL_MAX_QUEUE_LEN 6 52 #define MD_SET_MAX_QUEUE_LEN 7 53 #define MD_SET_POLL_WAKEUP_QUEUE_LEN 8 54 #define MD_MUTE_POOL 9 55 #define MD_UNMUTE_POOL 10 56 #define MD_MARK 11 57 #define MD_ADD_QUEUE 12 58 #define MD_ADD_BLOCKING_QUEUE 13 59 #define MD_REMOVE_QUEUE 14 60 #define MD_QUEUE_BLOCKING 15 61 #define MD_QUEUE_NONBLOCKING 16 62 #define MD_QUEUE_PROPERTIES 17 63 #define MD_ZEVSTAT 18 64 #define MD_ZEV_REPORT 19 65 #define MD_DUMP_SPOOL 20 66 #define MD_GET_ZEV_VERSION 21 67 68 static int verbose = 0; 69 static int grep_friendly = 0; 70 71 static void 72 zpf(char *fmt, ...) 73 { 74 va_list ap; 75 76 va_start(ap, fmt); 77 vprintf(fmt, ap); 78 va_end(ap); 79 if (grep_friendly) { 80 printf(" "); 81 } else { 82 printf("\n"); 83 } 84 } 85 86 static void 87 znl(void) 88 { 89 if (grep_friendly) 90 printf("\n"); 91 } 92 93 static void 94 sig2hex_direct(const uint8_t *sig, char *hex) 95 { 96 int i; 97 98 for (i = 0; i < SHA1_DIGEST_LENGTH; ++i) { 99 sprintf(hex + 2 * i, "%02x", sig[i]); 100 } 101 hex[SHA1_DIGEST_LENGTH * 2] = '\0'; 102 } 103 104 static int 105 zev_statistics(int fd) 106 { 107 zev_statistics_t zs; 108 if (ioctl(fd, ZEV_IOC_GET_GLOBAL_STATISTICS, &zs)) { 109 perror("getting statistics data failed"); 110 return (EXIT_FAILURE); 111 } 112 printf("ZEV module state:\n"); 113 114 printf(" queue length in bytes : %lu\n", zs.zev_queue_len); 115 printf(" queue length limit : %lu\n", zs.zev_max_queue_len); 116 printf(" bytes read from device : %lu\n", zs.zev_bytes_read); 117 printf(" module internal errors : %lu\n\n", zs.zev_cnt_errors); 118 119 printf(" discarded events : %lu\n", 120 zs.zev_cnt_discarded_events); 121 printf(" discarded bytes : %lu\n\n", zs.zev_bytes_discarded); 122 123 printf("ZFS event statistics:\n"); 124 125 printf(" total ZFS events : %lu\n", zs.zev_cnt_total_events); 126 printf(" ZFS mount : %lu\n", zs.zev_cnt_zfs_mount); 127 printf(" ZFS umount : %lu\n", zs.zev_cnt_zfs_umount); 128 printf(" ZVOL write : %lu\n", zs.zev_cnt_zvol_write); 129 printf(" ZVOL truncate : %lu\n", zs.zev_cnt_zvol_truncate); 130 printf(" ZNODE close after update: %lu\n", 131 zs.zev_cnt_znode_close_after_update); 132 printf(" ZNODE create : %lu\n", zs.zev_cnt_znode_create); 133 printf(" ZNODE remove : %lu\n", zs.zev_cnt_znode_remove); 134 printf(" ZNODE link : %lu\n", zs.zev_cnt_znode_link); 135 printf(" ZNODE symlink : %lu\n", zs.zev_cnt_znode_symlink); 136 printf(" ZNODE rename : %lu\n", zs.zev_cnt_znode_rename); 137 printf(" ZNODE write : %lu\n", zs.zev_cnt_znode_write); 138 printf(" ZNODE truncate : %lu\n", 139 zs.zev_cnt_znode_truncate); 140 printf(" ZNODE setattr : %lu\n", zs.zev_cnt_znode_setattr); 141 printf(" ZNODE acl : %lu\n", zs.zev_cnt_znode_acl); 142 return EXIT_SUCCESS; 143 } 144 145 static void 146 zev_print_inode_info(char *name, zev_inode_info_t *info) 147 { 148 zpf(" %s.inode: %llu", name, info->ino); 149 zpf(" %s.gen: %llu", name, info->gen); 150 zpf(" %s.mtime: %llu", name, info->mtime); 151 zpf(" %s.ctime: %llu", name, info->ctime); 152 zpf(" %s.size: %llu", name, info->size); 153 zpf(" %s.mode: %llo", name, info->mode); 154 zpf(" %s.links: %llu", name, info->links); 155 zpf(" %s.type: %lu", name, info->type); 156 zpf(" %s.flags: %lu", name, info->flags); 157 } 158 159 static void 160 zev_print_mark_payload(zev_mark_t *rec) 161 { 162 int i; 163 int j; 164 uint8_t *p; 165 char c; 166 167 zpf(" payload:"); 168 p = (uint8_t *)ZEV_PAYLOAD(rec); 169 for (i=0; i<rec->payload_len; i+=16) { 170 printf(" "); 171 for (j=i; j<rec->payload_len && j<i+16; j++) { 172 printf("%02x ", p[j]); 173 if (j == i + 7) 174 printf(" "); 175 } 176 if (grep_friendly) 177 continue; 178 for (; j<i+16; j++) { 179 printf(" "); 180 if (j == i + 7) 181 printf(" "); 182 } 183 printf(" "); 184 for (j=i; j<rec->payload_len && j<i+16; j++) { 185 c = '.'; 186 if (p[j] >= ' ' && p[j] <= '~') 187 c = p[j]; 188 printf("%c", c); 189 if (j == i + 7) 190 printf(" "); 191 } 192 printf("\n"); 193 } 194 } 195 196 static void 197 zev_print_error(char *buf) 198 { 199 zev_error_t *rec = (zev_error_t *)buf; 200 time_t op_time = rec->op_time; 201 char *ct = ctime(&op_time); ct[24] = '\0'; 202 203 if (verbose) { 204 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 205 zpf(" guid: %llu", rec->guid); 206 zpf(" failed.op: %s", 207 zev_op_name[rec->failed_op - ZEV_OP_MIN]); 208 zpf(" message: %s", ZEV_ERRSTR(rec)); 209 znl(); 210 } else { 211 printf("%s %s: failed_op=%s msg=%s\n", 212 ct, zev_op_name[rec->op - ZEV_OP_MIN], 213 zev_op_name[rec->failed_op - ZEV_OP_MIN], 214 ZEV_ERRSTR(rec)); 215 } 216 } 217 218 static void 219 zev_print_mark(char *buf) 220 { 221 zev_mark_t *rec = (zev_mark_t *)buf; 222 time_t op_time = rec->op_time; 223 char *ct = ctime(&op_time); ct[24] = '\0'; 224 225 if (verbose) { 226 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 227 zpf(" guid: %llu", rec->guid); 228 zpf(" mark.id: %llu", rec->mark_id); 229 zpf(" payload.len: %llu", rec->payload_len); 230 if (rec->payload_len) 231 zev_print_mark_payload(rec); 232 znl(); 233 } else { 234 printf("%s %s: guid=%llu mark_id=%lld payload_len=%ld " 235 "payload=\"%.*s\"\n", 236 ct, zev_op_name[rec->op - ZEV_OP_MIN], rec->guid, 237 rec->mark_id, rec->payload_len, 238 rec->payload_len, (char *)(rec + 1)); 239 } 240 } 241 242 static void 243 zev_print_zfs_mount(char *buf) 244 { 245 zev_zfs_mount_t *rec = (zev_zfs_mount_t *)buf; 246 time_t op_time = rec->op_time; 247 char *ct = ctime(&op_time); ct[24] = '\0'; 248 249 if (verbose) { 250 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 251 zpf(" guid: %llu", rec->guid); 252 zpf(" txg: %llu", rec->txg); 253 zpf(" dataset: %s", ZEV_DATASET(rec)); 254 zpf(" mountpoint: %s", ZEV_MOUNTPOINT(rec)); 255 zpf(" remount: %s", rec->remount ? "true" : "false"); 256 zev_print_inode_info("root", &rec->root); 257 znl(); 258 } else { 259 printf("%s %s: guid=%llu remount=%s dataset='%s' " 260 "mountpoint='%s'\n", 261 ct, zev_op_name[rec->op - ZEV_OP_MIN], 262 rec->guid, 263 rec->remount ? "true" : "false", 264 ZEV_DATASET(rec), 265 ZEV_MOUNTPOINT(rec)); 266 } 267 } 268 269 static void 270 zev_print_zfs_umount(char *buf) 271 { 272 zev_zfs_umount_t *rec = (zev_zfs_umount_t *)buf; 273 time_t op_time = rec->op_time; 274 char *ct = ctime(&op_time); ct[24] = '\0'; 275 276 if (verbose) { 277 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 278 zpf(" guid: %llu", rec->guid); 279 zpf(" txg: %llu", rec->txg); 280 zev_print_inode_info("covered", &rec->covered); 281 znl(); 282 } else { 283 printf("%s %s: guid=%llu\n", 284 ct, zev_op_name[rec->op - ZEV_OP_MIN], 285 rec->guid); 286 } 287 } 288 289 static void 290 zev_print_zvol_truncate(char *buf) 291 { 292 zev_zvol_truncate_t *rec = (zev_zvol_truncate_t *)buf; 293 time_t op_time = rec->op_time; 294 char *ct = ctime(&op_time); ct[24] = '\0'; 295 296 if (verbose) { 297 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 298 zpf(" guid: %llu", rec->guid); 299 zpf(" txg: %llu", rec->txg); 300 zpf(" offset: %llu", rec->offset); 301 zpf(" length: %llu", rec->length); 302 znl(); 303 } else { 304 printf("%s %s: guid=%llu offset=%llu length=%llu\n", 305 ct, zev_op_name[rec->op - ZEV_OP_MIN], 306 rec->guid, 307 rec->offset, 308 rec->length); 309 } 310 } 311 312 static void 313 zev_print_zvol_write(char *buf) 314 { 315 zev_print_zvol_truncate(buf); 316 } 317 318 static void 319 zev_print_znode_close_after_update(char *buf) 320 { 321 zev_znode_close_after_update_t *rec = 322 (zev_znode_close_after_update_t *)buf; 323 time_t op_time = rec->op_time; 324 char *ct = ctime(&op_time); ct[24] = '\0'; 325 326 if (verbose) { 327 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 328 zpf(" guid: %llu", rec->guid); 329 zev_print_inode_info("file", &rec->file); 330 znl(); 331 } else { 332 printf("%s %s: guid=%llu file=%llu.%llu\n", 333 ct, zev_op_name[rec->op - ZEV_OP_MIN], 334 rec->guid, 335 rec->file.ino, rec->file.gen); 336 } 337 } 338 339 static void 340 zev_print_znode_create(char *buf) 341 { 342 zev_znode_create_t *rec = (zev_znode_create_t *)buf; 343 time_t op_time = rec->op_time; 344 char *ct = ctime(&op_time); ct[24] = '\0'; 345 zev_sig_t *sig; 346 char sigval[(SHA1_DIGEST_LENGTH * 2) + 1]; 347 348 if (verbose) { 349 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 350 zpf(" guid: %llu", rec->guid); 351 zpf(" txg: %llu", rec->txg); 352 zpf(" name: '%s'", ZEV_NAME(rec)); 353 sig = &rec->signature; 354 sig2hex_direct(sig->value, sigval); 355 zpf(" sig: level %d, offset %llu, value %s", 356 sig->level, sig->block_offset, sigval); 357 zev_print_inode_info("file", &rec->file); 358 zev_print_inode_info("parent", &rec->parent); 359 znl(); 360 } else { 361 printf("%s %s: guid=%llu parent=%llu.%llu file=%llu.%llu " 362 "file.mtime=%llu, parent.mtime=%llu, name='%s'\n", 363 ct, zev_op_name[rec->op - ZEV_OP_MIN], 364 rec->guid, 365 rec->parent.ino, rec->parent.gen, 366 rec->file.ino, rec->file.gen, 367 rec->file.mtime, rec->parent.mtime, 368 ZEV_NAME(rec)); 369 } 370 } 371 372 static void 373 zev_print_znode_mkdir(char *buf) 374 { 375 zev_print_znode_create(buf); 376 } 377 378 static void 379 zev_print_znode_make_xattr_dir(char *buf) 380 { 381 zev_print_znode_create(buf); 382 } 383 384 static void 385 zev_print_znode_remove(char *buf) 386 { 387 zev_znode_remove_t *rec = (zev_znode_remove_t *)buf; 388 time_t op_time = rec->op_time; 389 char *ct = ctime(&op_time); ct[24] = '\0'; 390 391 if (verbose) { 392 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 393 zpf(" guid: %llu", rec->guid); 394 zpf(" txg: %llu", rec->txg); 395 zpf(" file.name: '%s'", ZEV_NAME(rec)); 396 zev_print_inode_info("file", &rec->file); 397 zev_print_inode_info("parent", &rec->parent); 398 znl(); 399 } else { 400 printf("%s %s: guid=%llu parent=%llu.%llu " 401 "file.mtime=%llu name='%s'\n", 402 ct, zev_op_name[rec->op - ZEV_OP_MIN], 403 rec->guid, 404 rec->parent.ino, rec->parent.gen, 405 rec->file.mtime, 406 ZEV_NAME(rec)); 407 } 408 } 409 410 static void 411 zev_print_znode_rmdir(char *buf) 412 { 413 zev_print_znode_remove(buf); 414 } 415 416 static void 417 zev_print_znode_link(char *buf) 418 { 419 zev_znode_link_t *rec = (zev_znode_link_t *)buf; 420 time_t op_time = rec->op_time; 421 char *ct = ctime(&op_time); ct[24] = '\0'; 422 423 if (verbose) { 424 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 425 zpf(" guid: %llu", rec->guid); 426 zpf(" txg: %llu", rec->txg); 427 zpf(" link.name: '%s'", ZEV_NAME(rec)); 428 zev_print_inode_info("file", &rec->file); 429 zev_print_inode_info("parent", &rec->parent); 430 znl(); 431 } else { 432 printf("%s %s: parent=%llu.%llu file=%llu.%llu " 433 "file.ctime=%llu parent.ctime=%llu name='%s'\n", 434 ct, zev_op_name[rec->op - ZEV_OP_MIN], 435 rec->parent.ino, rec->parent.gen, 436 rec->file.ino, rec->file.gen, 437 rec->file.ctime, rec->parent.ctime, 438 ZEV_NAME(rec)); 439 } 440 } 441 442 static void 443 zev_print_znode_symlink(char *buf) 444 { 445 zev_znode_symlink_t *rec = (zev_znode_symlink_t *)buf; 446 time_t op_time = rec->op_time; 447 char *ct = ctime(&op_time); ct[24] = '\0'; 448 zev_sig_t *sig; 449 char sigval[(SHA1_DIGEST_LENGTH * 2) + 1]; 450 451 if (verbose) { 452 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 453 zpf(" guid: %llu", rec->guid); 454 zpf(" txg: %llu", rec->txg); 455 zpf(" symlink.name: '%s'", ZEV_NAME(rec)); 456 zpf(" symlink.link: '%s'", ZEV_LINK(rec)); 457 sig = &rec->signature; 458 sig2hex_direct(sig->value, sigval); 459 zpf(" sig: level %d, offset %llu, value %s", 460 sig->level, sig->block_offset, sigval); 461 zev_print_inode_info("file", &rec->file); 462 zev_print_inode_info("parent", &rec->parent); 463 znl(); 464 } else { 465 printf("%s %s: parent=%llu.%llu file=%llu.%llu " 466 "name='%s' link='%s'\n", 467 ct, zev_op_name[rec->op - ZEV_OP_MIN], 468 rec->parent.ino, rec->parent.gen, 469 rec->file.ino, rec->file.gen, 470 ZEV_NAME(rec), 471 ZEV_LINK(rec)); 472 } 473 } 474 475 static void 476 zev_print_znode_rename(char *buf) 477 { 478 zev_znode_rename_t *rec = (zev_znode_rename_t *)buf; 479 time_t op_time = rec->op_time; 480 char *ct = ctime(&op_time); ct[24] = '\0'; 481 482 if (verbose) { 483 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 484 zpf(" guid: %llu", rec->guid); 485 zpf(" txg: %llu", rec->txg); 486 zpf(" file.srcname: '%s'", ZEV_SRCNAME(rec)); 487 zpf(" file.dstname: '%s'", ZEV_DSTNAME(rec)); 488 zev_print_inode_info("file", &rec->file); 489 if (rec->clobbered_file.ino) 490 zev_print_inode_info("clobbered_file", 491 &rec->clobbered_file); 492 zev_print_inode_info("srcdir", &rec->srcdir); 493 zev_print_inode_info("dstdir", &rec->dstdir); 494 znl(); 495 } else { 496 printf("%s %s: srcdir=%llu.%llu dstdir=%llu.%llu " 497 "file=%llu.%llu file.mtime=%llu, file.ctime=%llu, " 498 "srcdir.mtime=%llu, srcdir.ctime=%llu, " 499 "dstdir.mtime=%llu, dstdir.ctime=%llu, " 500 "srcname='%s' dstname='%s'\n", 501 ct, zev_op_name[rec->op - ZEV_OP_MIN], 502 rec->srcdir.ino, rec->srcdir.gen, 503 rec->dstdir.ino, rec->dstdir.gen, 504 rec->file.ino, rec->file.gen, 505 rec->file.mtime, rec->file.ctime, 506 rec->srcdir.mtime, rec->srcdir.ctime, 507 rec->dstdir.mtime, rec->dstdir.ctime, 508 ZEV_SRCNAME(rec), 509 ZEV_DSTNAME(rec)); 510 } 511 } 512 513 static void 514 zev_print_znode_write(char *buf) 515 { 516 zev_znode_write_t *rec = (zev_znode_write_t *)buf; 517 time_t op_time = rec->op_time; 518 char *ct = ctime(&op_time); ct[24] = '\0'; 519 zev_sig_t *sig; 520 char sigval[(SHA1_DIGEST_LENGTH * 2) + 1]; 521 int i; 522 523 if (verbose) { 524 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 525 zpf(" guid: %llu", rec->guid); 526 zpf(" txg: %llu", rec->txg); 527 zpf(" offset: %llu", rec->offset); 528 zpf(" length: %llu", rec->length); 529 zev_print_inode_info("file", &rec->file); 530 znl(); 531 for (i=0; i<rec->signature_cnt; i++) { 532 sig = (zev_sig_t *)ZEV_SIGNATURES(rec); 533 sig += i; 534 sig2hex_direct(sig->value, sigval); 535 zpf(" sig: level %d, offset %llu, value %s", 536 sig->level, sig->block_offset, sigval); 537 } 538 } else { 539 printf("%s %s: file=%llu.%llu offset=%llu length=%llu\n", 540 ct, zev_op_name[rec->op - ZEV_OP_MIN], 541 rec->file.ino, rec->file.gen, 542 rec->offset, rec->length); 543 } 544 } 545 546 static void 547 zev_print_znode_truncate(char *buf) 548 { 549 zev_print_znode_write(buf); 550 } 551 552 static void 553 zev_print_znode_setattr(char *buf) 554 { 555 zev_znode_setattr_t *rec = (zev_znode_setattr_t *)buf; 556 time_t op_time = rec->op_time; 557 char *ct = ctime(&op_time); ct[24] = '\0'; 558 559 if (verbose) { 560 zpf("%s %s", ct, zev_op_name[rec->op - ZEV_OP_MIN]); 561 zpf(" guid: %llu", rec->guid); 562 zpf(" txg: %llu", rec->txg); 563 zev_print_inode_info("file", &rec->file); 564 znl(); 565 } else { 566 printf("%s %s: file=%llu.%llu mtime=%llu\n", 567 ct, zev_op_name[rec->op - ZEV_OP_MIN], 568 rec->file.ino, rec->file.gen, rec->file.mtime); 569 } 570 } 571 572 static void 573 zev_print_znode_acl(char *buf) 574 { 575 zev_print_znode_setattr(buf); 576 } 577 578 static void 579 zev_print_event(char *buf, int len) 580 { 581 int record_len; 582 int op; 583 584 record_len = *(uint32_t *)buf; 585 if (record_len != len) { 586 fprintf(stderr, "record length mismatch: got %d, expected %d\n", 587 record_len, len); 588 exit(1); 589 } 590 op = *((uint32_t *)buf + 1); 591 if (op < ZEV_OP_MIN || op > ZEV_OP_MAX) { 592 fprintf(stderr, "unknown op code: %d\n", op); 593 exit(1); 594 } 595 switch (op) { 596 case ZEV_OP_ERROR: 597 zev_print_error(buf); 598 break; 599 case ZEV_OP_MARK: 600 zev_print_mark(buf); 601 break; 602 case ZEV_OP_ZFS_MOUNT: 603 zev_print_zfs_mount(buf); 604 break; 605 case ZEV_OP_ZFS_UMOUNT: 606 zev_print_zfs_umount(buf); 607 break; 608 case ZEV_OP_ZVOL_TRUNCATE: 609 zev_print_zvol_truncate(buf); 610 break; 611 case ZEV_OP_ZVOL_WRITE: 612 zev_print_zvol_write(buf); 613 break; 614 case ZEV_OP_ZNODE_CLOSE_AFTER_UPDATE: 615 zev_print_znode_close_after_update(buf); 616 break; 617 case ZEV_OP_ZNODE_CREATE: 618 zev_print_znode_create(buf); 619 break; 620 case ZEV_OP_ZNODE_MKDIR: 621 zev_print_znode_mkdir(buf); 622 break; 623 case ZEV_OP_ZNODE_MAKE_XATTR_DIR: 624 zev_print_znode_make_xattr_dir(buf); 625 break; 626 case ZEV_OP_ZNODE_REMOVE: 627 zev_print_znode_remove(buf); 628 break; 629 case ZEV_OP_ZNODE_RMDIR: 630 zev_print_znode_rmdir(buf); 631 break; 632 case ZEV_OP_ZNODE_LINK: 633 zev_print_znode_link(buf); 634 break; 635 case ZEV_OP_ZNODE_SYMLINK: 636 zev_print_znode_symlink(buf); 637 break; 638 case ZEV_OP_ZNODE_RENAME: 639 zev_print_znode_rename(buf); 640 break; 641 case ZEV_OP_ZNODE_WRITE: 642 zev_print_znode_write(buf); 643 break; 644 case ZEV_OP_ZNODE_TRUNCATE: 645 zev_print_znode_truncate(buf); 646 break; 647 case ZEV_OP_ZNODE_SETATTR: 648 zev_print_znode_setattr(buf); 649 break; 650 case ZEV_OP_ZNODE_ACL: 651 zev_print_znode_acl(buf); 652 break; 653 default: 654 fprintf(stderr, "unhandled op code: %d\n", op); 655 exit(1); 656 } 657 } 658 659 static int 660 zev_poll_events(int fd, int create_tmp_queue) 661 { 662 struct pollfd pfd[1]; 663 int ret; 664 char buf[4096]; 665 zev_event_t *ev; 666 int off = 0; 667 int q_fd; 668 669 if (create_tmp_queue) { 670 snprintf(buf, sizeof(buf), 671 "/devices/pseudo/zev@0:%s", ZEV_TMPQUEUE_DEVICE_NAME); 672 q_fd = open(buf, O_RDONLY); 673 if (q_fd < 0) { 674 perror("opening queue device failed"); 675 return (EXIT_FAILURE); 676 } 677 } else { 678 q_fd = fd; 679 } 680 681 while (1) { 682 pfd[0].fd = q_fd; 683 pfd[0].events = POLLIN; 684 ret = poll(pfd, 1, 1000); 685 if (ret < 0) { 686 perror("poll failed"); 687 close(q_fd); 688 return(EXIT_FAILURE); 689 } 690 if (!(pfd[0].revents & POLLIN)) 691 continue; 692 /* data available */ 693 ret = read(q_fd, buf, sizeof(buf)); 694 if (ret < 0) { 695 perror("read failed"); 696 close(q_fd); 697 return(EXIT_FAILURE); 698 } 699 if (ret == 0) 700 continue; 701 while (ret > off) { 702 ev = (zev_event_t *)(buf + off); 703 zev_print_event(buf + off, ev->header.record_len); 704 off += ev->header.record_len; 705 } 706 off = 0; 707 } 708 if (create_tmp_queue) 709 close(q_fd); 710 return EXIT_SUCCESS; 711 } 712 713 static int 714 zev_dump_spool(int fd) 715 { 716 int len; 717 char buf[4096]; 718 int off = 0; 719 720 while (1) { 721 len = read(fd, buf + off, sizeof(buf) - off); 722 if (len == -1) { 723 fprintf(stderr, "reading from spool failed: %s\n", 724 strerror(errno)); 725 return EXIT_FAILURE; 726 } 727 if (len == 0) 728 break; 729 730 len += off; 731 off = 0; 732 while (len > off + sizeof(uint32_t)) { 733 uint32_t evlen; 734 char *mp; 735 zev_event_t *ev; 736 737 ev = (zev_event_t *)(buf + off); 738 evlen = ev->header.record_len; 739 if (len < off + evlen + 1) 740 break; 741 mp = buf + off + evlen; 742 if (!memchr(mp, 0, len - off - evlen)) 743 break; 744 zev_print_event(buf + off, ev->header.record_len); 745 off += ev->header.record_len + strlen(mp) + 1; 746 } 747 748 memmove(buf, buf + off, len - off); 749 off = len - off; 750 } 751 752 return EXIT_SUCCESS; 753 } 754 755 static void 756 usage(char *progname) 757 { 758 fprintf(stderr, "usage: %s [-d <dev>] [options]\n", progname); 759 fprintf(stderr, "\n"); 760 fprintf(stderr, " Status information:\n"); 761 fprintf(stderr, " -s show zev statistics\n"); 762 fprintf(stderr, " -p poll for ZFS events\n"); 763 fprintf(stderr, " -f <name> dump events from spool\n"); 764 fprintf(stderr, " -D print zev module debug " 765 "information\n"); 766 fprintf(stderr, " -T <interval> <cnt> zevstat mode\n"); 767 fprintf(stderr, " -R <base filename> zevreport mode\n"); 768 fprintf(stderr, "\n"); 769 fprintf(stderr, " Tune zev module settings:\n"); 770 fprintf(stderr, " -Q <bytes> set maximum event queue " 771 "length\n"); 772 fprintf(stderr, " -m <pool> mute pool, no events for " 773 "this pool\n"); 774 fprintf(stderr, " -M <pool> unmute pool\n"); 775 fprintf(stderr, "\n"); 776 fprintf(stderr, " Queue management:\n"); 777 fprintf(stderr, " -l list queues\n"); 778 fprintf(stderr, " -a <name> add non-blocking queue\n"); 779 fprintf(stderr, " -A <name> add blocking queue\n"); 780 fprintf(stderr, " -r <name> remove queue\n"); 781 fprintf(stderr, " -b <name> make queue non-blocking " 782 "(default)\n"); 783 fprintf(stderr, " -B <name> make queue block when full\n"); 784 fprintf(stderr, " -P <name> display queue properties\n"); 785 fprintf(stderr, " -L <name> <bytes> set maximum event queue " 786 "length\n"); 787 fprintf(stderr, " -t <name> <bytes> set queue length poll " 788 "throttle\n"); 789 fprintf(stderr, "\n"); 790 fprintf(stderr, " Other options:\n"); 791 fprintf(stderr, " -d <dev> non-default device file. " 792 "('%s')\n", ZEV_DEVICE); 793 fprintf(stderr, " -q <name> use device file for this " 794 "queue name\n"); 795 fprintf(stderr, " -k <guid>:<payload> queue mark event\n"); 796 fprintf(stderr, " -c <filename> list file's content " 797 "checksums\n"); 798 fprintf(stderr, " -v verbose: additional output " 799 "for some operations\n"); 800 fprintf(stderr, " -g grep-friendly event output, " 801 "one event per line\n"); 802 fprintf(stderr, " -V query zev module version\n"); 803 exit (EXIT_FAILURE); 804 } 805 806 static void 807 zevstat_usage(char *progname) 808 { 809 fprintf(stderr, "usage: %s [-v] <interval> [count]\n", progname); 810 fprintf(stderr, " -v verbose, show counters for all event types\n"); 811 exit (EXIT_FAILURE); 812 } 813 814 static void 815 zevreport_usage(char *progname) 816 { 817 fprintf(stderr, "usage: %s <output base filename>\n", progname); 818 exit (EXIT_FAILURE); 819 } 820 821 static int 822 zev_add_queue(int fd, char *arg, int blocking) 823 { 824 zev_ioctl_add_queue_t aq; 825 int namelen; 826 827 namelen = strlen(arg); 828 if (namelen > ZEV_MAX_QUEUE_NAME_LEN) { 829 fprintf(stderr, "queue name too long: %s\n", arg); 830 return (EXIT_FAILURE); 831 } 832 833 aq.zev_namelen = namelen; 834 strcpy(aq.zev_name, arg); 835 aq.zev_flags = ZEV_FL_PERSISTENT | ZEV_FL_INITIALLY_EMPTY; 836 if (blocking) { 837 aq.zev_flags |= ZEV_FL_BLOCK_WHILE_QUEUE_FULL; 838 aq.zev_max_queue_len = ZEV_MAX_QUEUE_LEN; 839 } else { 840 aq.zev_max_queue_len = (1024 * 1024); 841 } 842 843 if (ioctl(fd, ZEV_IOC_ADD_QUEUE, &aq)) { 844 perror("adding queue failed"); 845 return (EXIT_FAILURE); 846 } 847 return (0); 848 } 849 850 static int 851 zev_remove_queue(int fd, char *arg) 852 { 853 zev_ioctl_remove_queue_t aq; 854 int namelen; 855 856 namelen = strlen(arg); 857 if (namelen > ZEV_MAX_QUEUE_NAME_LEN) { 858 fprintf(stderr, "queue name too long: %s\n", arg); 859 return (EXIT_FAILURE); 860 } 861 862 aq.zev_queue_name.zev_namelen = namelen; 863 strcpy(aq.zev_queue_name.zev_name, arg); 864 865 if (ioctl(fd, ZEV_IOC_REMOVE_QUEUE, &aq)) { 866 perror("removing queue failed"); 867 return (EXIT_FAILURE); 868 } 869 return (0); 870 } 871 872 static int 873 zev_set_global_max_queue_len(int fd, char *arg) 874 { 875 uint64_t maxqueuelen; 876 877 if (!arg) { 878 fprintf(stderr, "missing queue length parameter\n"); 879 return (EXIT_FAILURE); 880 } 881 882 errno = 0; 883 maxqueuelen = strtol(arg, (char **)NULL, 10); 884 if (errno) { 885 fprintf(stderr, "invalid queue length parameter: %s\n", arg); 886 return (EXIT_FAILURE); 887 } 888 if (ioctl(fd, ZEV_IOC_SET_MAX_QUEUE_LEN, &maxqueuelen)) { 889 perror("setting max queue length failed"); 890 return (EXIT_FAILURE); 891 } 892 return (0); 893 } 894 895 static int 896 zev_mute_unmute_impl(int fd, char *poolname, int mute) 897 { 898 zev_ioctl_poolarg_t pa; 899 int len; 900 int op = mute ? ZEV_IOC_MUTE_POOL : ZEV_IOC_UNMUTE_POOL; 901 len = strlen(poolname); 902 if (len <= 0 || len >= sizeof(pa.zev_poolname)) { 903 fprintf(stderr, "invalid poolname: %s\n", poolname); 904 return (EXIT_FAILURE); 905 } 906 strcpy(pa.zev_poolname, poolname); 907 pa.zev_poolname_len = len; 908 if (ioctl(fd, op, &pa)) { 909 perror("muting pool data failed"); 910 return (EXIT_FAILURE); 911 } 912 return (0); 913 } 914 915 int 916 zev_mute_pool(int fd, char *poolname) 917 { 918 return zev_mute_unmute_impl(fd, poolname, 1); 919 } 920 921 int 922 zev_unmute_pool(int fd, char *poolname) 923 { 924 return zev_mute_unmute_impl(fd, poolname, 0); 925 } 926 927 static int 928 zev_debug_info(int fd) 929 { 930 zev_ioctl_debug_info_t di; 931 932 if (ioctl(fd, ZEV_IOC_GET_DEBUG_INFO, &di)) { 933 perror("getting zev debug info failed"); 934 return (EXIT_FAILURE); 935 } 936 937 printf("memory allocated: %llu bytes\n", di.zev_memory_allocated); 938 printf("checksum cache size: %llu\n", di.zev_chksum_cache_size); 939 printf("checksum cache hits: %llu\n", di.zev_chksum_cache_hits); 940 printf("checksum cache misses: %llu\n", di.zev_chksum_cache_misses); 941 return 0; 942 } 943 944 static int 945 zev_mark(int fd, char *arg) 946 { 947 zev_ioctl_mark_t *mark; 948 uint64_t guid; 949 int len; 950 char *p; 951 952 p = strchr(arg, ':'); 953 if (!p) { 954 fprintf(stderr, "expected value is <guid>:<payload>, " 955 "e.g. '123:hello'\n"); 956 exit (EXIT_FAILURE); 957 } 958 *p = '\n'; 959 p++; 960 961 errno = 0; 962 guid = strtoll(arg, (char **)NULL, 10); 963 if (errno) { 964 fprintf(stderr, "guid must be a number.\n"); 965 exit (EXIT_FAILURE); 966 } 967 968 len = strlen(p); 969 970 mark = malloc(sizeof(*mark) + len + 1); 971 if (!mark) { 972 fprintf(stderr, "can't allocate mark structure: %s\n", 973 strerror(errno)); 974 exit (EXIT_FAILURE); 975 } 976 mark->zev_guid = guid; 977 mark->zev_mark_id = 0; 978 mark->zev_payload_len = len; 979 strcpy(ZEV_PAYLOAD(mark), p); 980 981 if (ioctl(fd, ZEV_IOC_MARK, mark)) { 982 perror("queueing mark failed"); 983 return (EXIT_FAILURE); 984 } 985 986 printf("mark id: %lu\n", mark->zev_mark_id); 987 return (0); 988 } 989 990 static int 991 zev_queue_blocking(int fd, char *arg, int block) 992 { 993 zev_ioctl_get_queue_properties_t gqp; 994 995 gqp.zev_queue_name.zev_namelen = strlen(arg); 996 if (gqp.zev_queue_name.zev_namelen > ZEV_MAX_QUEUE_NAME_LEN) { 997 fprintf(stderr, "queue name too long.\n"); 998 return EXIT_FAILURE; 999 } 1000 strcpy(gqp.zev_queue_name.zev_name, arg); 1001 1002 if (ioctl(fd, ZEV_IOC_GET_QUEUE_PROPERTIES, &gqp)) { 1003 perror("getting queue properties failed"); 1004 return (EXIT_FAILURE); 1005 } 1006 if (block) { 1007 gqp.zev_flags |= ZEV_FL_BLOCK_WHILE_QUEUE_FULL; 1008 } else { 1009 gqp.zev_flags &= ~ZEV_FL_BLOCK_WHILE_QUEUE_FULL; 1010 } 1011 if (ioctl(fd, ZEV_IOC_SET_QUEUE_PROPERTIES, &gqp)) { 1012 perror("setting queue properties failed"); 1013 return (EXIT_FAILURE); 1014 } 1015 return (0); 1016 } 1017 1018 static int 1019 zev_set_max_queue_len(int fd, char *arg, char *len) 1020 { 1021 zev_ioctl_get_queue_properties_t gqp; 1022 1023 if (!len) { 1024 fprintf(stderr, "queue size parameter missing.\n"); 1025 return EXIT_FAILURE; 1026 } 1027 1028 gqp.zev_queue_name.zev_namelen = strlen(arg); 1029 if (gqp.zev_queue_name.zev_namelen > ZEV_MAX_QUEUE_NAME_LEN) { 1030 fprintf(stderr, "queue name too long.\n"); 1031 return EXIT_FAILURE; 1032 } 1033 strcpy(gqp.zev_queue_name.zev_name, arg); 1034 1035 if (ioctl(fd, ZEV_IOC_GET_QUEUE_PROPERTIES, &gqp)) { 1036 perror("getting queue properties failed"); 1037 return (EXIT_FAILURE); 1038 } 1039 gqp.zev_max_queue_len = atol(len); 1040 if (gqp.zev_max_queue_len == 0 && strcmp("0", len)) { 1041 fprintf(stderr, "queue size parameter garbled.\n"); 1042 return (EXIT_FAILURE); 1043 } 1044 if (gqp.zev_max_queue_len > ZEV_MAX_QUEUE_LEN) { 1045 fprintf(stderr, "queue size parameter out of bounds.\n"); 1046 return (EXIT_FAILURE); 1047 } 1048 1049 if (ioctl(fd, ZEV_IOC_SET_QUEUE_PROPERTIES, &gqp)) { 1050 perror("setting queue properties failed"); 1051 return (EXIT_FAILURE); 1052 } 1053 return (0); 1054 } 1055 1056 static int 1057 zev_set_poll_wakeup_queue_len(int fd, char *arg, char *len) 1058 { 1059 zev_ioctl_get_queue_properties_t gqp; 1060 1061 if (!len) { 1062 fprintf(stderr, "poll throttle parameter missing.\n"); 1063 return EXIT_FAILURE; 1064 } 1065 1066 gqp.zev_queue_name.zev_namelen = strlen(arg); 1067 if (gqp.zev_queue_name.zev_namelen > ZEV_MAX_QUEUE_NAME_LEN) { 1068 fprintf(stderr, "queue name too long.\n"); 1069 return EXIT_FAILURE; 1070 } 1071 strcpy(gqp.zev_queue_name.zev_name, arg); 1072 1073 if (ioctl(fd, ZEV_IOC_GET_QUEUE_PROPERTIES, &gqp)) { 1074 perror("getting queue properties failed"); 1075 return (EXIT_FAILURE); 1076 } 1077 gqp.zev_poll_wakeup_threshold = atol(len); 1078 if (gqp.zev_poll_wakeup_threshold == 0 && strcmp("0", len)) { 1079 fprintf(stderr, "poll throttle parameter garbled.\n"); 1080 return (EXIT_FAILURE); 1081 } 1082 if (gqp.zev_poll_wakeup_threshold > ZEV_MAX_POLL_WAKEUP_QUEUE_LEN) { 1083 fprintf(stderr, "poll throttle parameter out of bounds.\n"); 1084 return (EXIT_FAILURE); 1085 } 1086 1087 if (ioctl(fd, ZEV_IOC_SET_QUEUE_PROPERTIES, &gqp)) { 1088 perror("setting queue properties failed"); 1089 return (EXIT_FAILURE); 1090 } 1091 return (0); 1092 } 1093 1094 static int 1095 zev_queue_properties(int fd, char *arg) 1096 { 1097 zev_ioctl_get_queue_properties_t gqp; 1098 1099 gqp.zev_queue_name.zev_namelen = strlen(arg); 1100 if (gqp.zev_queue_name.zev_namelen > ZEV_MAX_QUEUE_NAME_LEN) { 1101 fprintf(stderr, "queue name too long.\n"); 1102 return EXIT_FAILURE; 1103 } 1104 strcpy(gqp.zev_queue_name.zev_name, arg); 1105 1106 if (ioctl(fd, ZEV_IOC_GET_QUEUE_PROPERTIES, &gqp)) { 1107 perror("getting queue properties failed"); 1108 return (EXIT_FAILURE); 1109 } 1110 1111 printf("queue : %s\n", arg); 1112 printf("max size : %" PRIu64 "\n", gqp.zev_max_queue_len); 1113 printf("poll throttle: %" PRIu64 "\n", gqp.zev_poll_wakeup_threshold); 1114 printf("persistent : %s\n", 1115 gqp.zev_flags & ZEV_FL_PERSISTENT ? "yes" : "no"); 1116 printf("blocking : %s\n", 1117 gqp.zev_flags & ZEV_FL_BLOCK_WHILE_QUEUE_FULL ? "yes" : "no"); 1118 1119 return (0); 1120 } 1121 1122 static int 1123 zev_list_queues(int fd) 1124 { 1125 zev_ioctl_get_queue_properties_t gqp; 1126 zev_ioctl_get_queue_list_t gql; 1127 zev_ioctl_get_queue_statistics_t gs; 1128 uint64_t i; 1129 char name[ZEV_MAX_QUEUE_NAME_LEN+1]; 1130 zev_statistics_t zs; 1131 1132 if (ioctl(fd, ZEV_IOC_GET_GLOBAL_STATISTICS, &zs)) { 1133 perror("getting statistics data failed"); 1134 return (EXIT_FAILURE); 1135 } 1136 1137 if (ioctl(fd, ZEV_IOC_GET_QUEUE_LIST, &gql)) { 1138 perror("getting queue list failed"); 1139 return (EXIT_FAILURE); 1140 } 1141 1142 printf("Name Size " 1143 "Size%% Max Size Per Block\n"); 1144 1145 for (i=0; i<gql.zev_n_queues; i++) { 1146 strncpy(name, gql.zev_queue_name[i].zev_name, 1147 ZEV_MAX_QUEUE_NAME_LEN); 1148 name[gql.zev_queue_name[i].zev_namelen] = '\0'; 1149 1150 memcpy(gqp.zev_queue_name.zev_name, 1151 gql.zev_queue_name[i].zev_name, ZEV_MAX_QUEUE_NAME_LEN); 1152 gqp.zev_queue_name.zev_namelen = 1153 gql.zev_queue_name[i].zev_namelen; 1154 1155 if (ioctl(fd, ZEV_IOC_GET_QUEUE_PROPERTIES, &gqp)) { 1156 if (errno == ENOENT) 1157 continue; 1158 perror("getting queue properties failed"); 1159 return (EXIT_FAILURE); 1160 } 1161 1162 memcpy(gs.zev_queue_name.zev_name, 1163 gql.zev_queue_name[i].zev_name, ZEV_MAX_QUEUE_NAME_LEN); 1164 gs.zev_queue_name.zev_namelen = 1165 gql.zev_queue_name[i].zev_namelen; 1166 1167 if (ioctl(fd, ZEV_IOC_GET_QUEUE_STATISTICS, &gs)) { 1168 if (errno == ENOENT) 1169 continue; 1170 perror("getting statistics data failed"); 1171 return (EXIT_FAILURE); 1172 } 1173 1174 if (gqp.zev_max_queue_len == 0) { 1175 gqp.zev_max_queue_len = zs.zev_max_queue_len; 1176 } 1177 printf("%-40s %-10" PRIu64 " %5.1f %-10" PRIu64 1178 " %-3s %-3s\n", 1179 name, 1180 gs.zev_statistics.zev_queue_len * 100.0 / 1181 gqp.zev_max_queue_len, 1182 gs.zev_statistics.zev_queue_len, 1183 gqp.zev_max_queue_len, 1184 gqp.zev_flags & ZEV_FL_PERSISTENT ? "yes" : "no", 1185 gqp.zev_flags & ZEV_FL_BLOCK_WHILE_QUEUE_FULL ? 1186 "yes" : "no"); 1187 } 1188 1189 return (0); 1190 } 1191 1192 static int 1193 zev_checksum(int dev_fd, char *filename) 1194 { 1195 int fd; 1196 offset_t off; 1197 offset_t data; 1198 zev_sig_t *sig; 1199 char *buf; 1200 zev_ioctl_get_signatures_t *gs; 1201 int i; 1202 char sigval[(SHA1_DIGEST_LENGTH * 2) + 1]; 1203 int buf_size; 1204 1205 /* control struct, one lv1 signature and up to 256 lv0 signatures */ 1206 buf_size = (1 + 256) * sizeof(zev_sig_t); 1207 buf = malloc(sizeof(zev_ioctl_get_signatures_t) + buf_size); 1208 if (!buf) { 1209 perror("can't allocate checksum buffer"); 1210 return (EXIT_FAILURE); 1211 } 1212 1213 fd = open(filename, O_RDONLY); 1214 if (fd < 0) { 1215 perror("can't open file"); 1216 return (EXIT_FAILURE); 1217 } 1218 1219 gs = (zev_ioctl_get_signatures_t *)buf; 1220 gs->zev_fd = fd; 1221 gs->zev_bufsize = buf_size; 1222 1223 off = 0; 1224 data = 0; 1225 while (1) { 1226 errno = 0; 1227 data = llseek(fd, off, SEEK_DATA); 1228 if (data < 0) { 1229 if (errno == ENXIO) /* no more data */ 1230 break; 1231 perror("llseek failed"); 1232 goto err; 1233 } 1234 data = P2ALIGN(data, ZEV_L1_SIZE); 1235 off = data + ZEV_L1_SIZE; 1236 1237 gs->zev_offset = data; 1238 gs->zev_len = ZEV_L1_SIZE; 1239 1240 if (ioctl(dev_fd, ZEV_IOC_GET_FILE_SIGNATURES, gs)) { 1241 perror("ioctl to get signatures failed"); 1242 goto err; 1243 } 1244 1245 for (i=0; i<gs->zev_signature_cnt; i++) { 1246 sig = (zev_sig_t *)ZEV_SIGNATURES(gs); 1247 sig += i; 1248 sig2hex_direct(sig->value, sigval); 1249 printf("level %d, offset %llu, value %s\n", 1250 sig->level, sig->block_offset, sigval); 1251 } 1252 } 1253 1254 free(buf); 1255 close(fd); 1256 return 0; 1257 err: 1258 free(buf); 1259 close(fd); 1260 return (EXIT_FAILURE); 1261 } 1262 1263 typedef struct zevstat { 1264 uint64_t ns_start; 1265 uint64_t events[ZEV_OP_MIN + ZEV_OP_MAX]; 1266 uint64_t guids; 1267 uint64_t total_events; 1268 uint64_t total_guids; 1269 avl_tree_t guids_interval; 1270 avl_tree_t guids_runtime; 1271 } zevstat_t; 1272 1273 typedef struct zev_guidtrack_t { 1274 uint64_t guid; 1275 avl_node_t avl_interval; 1276 avl_node_t avl_runtime; 1277 } zev_guidtrack_t; 1278 1279 zevstat_t zevstat; 1280 1281 static void 1282 zev_eventstat(char *buf, int len) 1283 { 1284 zev_header_t *rec = (zev_header_t *)buf; 1285 zev_guidtrack_t *gt; 1286 zev_guidtrack_t *gt_int; 1287 zev_guidtrack_t to_find; 1288 avl_index_t where; 1289 1290 zevstat.total_events++; 1291 zevstat.events[rec->op]++; 1292 1293 to_find.guid = rec->guid; 1294 gt = avl_find(&zevstat.guids_runtime, &to_find, &where); 1295 if (!gt) { 1296 gt = malloc(sizeof(*gt)); 1297 if (!gt) { 1298 perror("can't get guid tracking record"); 1299 exit (EXIT_FAILURE); 1300 } 1301 gt->guid = rec->guid; 1302 avl_insert(&zevstat.guids_runtime, gt, where); 1303 } 1304 gt_int = avl_find(&zevstat.guids_interval, &to_find, &where); 1305 if (!gt_int) 1306 avl_insert(&zevstat.guids_interval, gt, where); 1307 } 1308 1309 static void 1310 zev_eventstat_interval(FILE *out) 1311 { 1312 uint64_t events; 1313 int i; 1314 zev_guidtrack_t *gt; 1315 1316 events = 0; 1317 for (i = ZEV_OP_MIN; i <= ZEV_OP_MAX; i++) { 1318 events += zevstat.events[i]; 1319 } 1320 1321 if (verbose) { 1322 fprintf(out, "%u %6llu %6llu %6llu %6llu ", 1323 time(NULL), 1324 events, 1325 zevstat.total_events, 1326 avl_numnodes(&zevstat.guids_interval), 1327 avl_numnodes(&zevstat.guids_runtime)); 1328 for (i = ZEV_OP_MIN; i <= ZEV_OP_MAX; i++) 1329 fprintf(out, "%6llu ", zevstat.events[i]); 1330 fprintf(out, "\n"); 1331 } else { 1332 fprintf(out, "%u %6llu %6llu %6llu %6llu\n", 1333 time(NULL), 1334 events, 1335 zevstat.total_events, 1336 avl_numnodes(&zevstat.guids_interval), 1337 avl_numnodes(&zevstat.guids_runtime)); 1338 } 1339 memset(&zevstat.events, 0, sizeof(zevstat.events)); 1340 zevstat.guids = 0; 1341 while (gt = avl_first(&zevstat.guids_interval)) 1342 avl_remove(&zevstat.guids_interval, gt); 1343 fflush(out); 1344 } 1345 1346 static int 1347 zev_evcompar(const void *a, const void *b) 1348 { 1349 const zev_guidtrack_t *ga = a; 1350 const zev_guidtrack_t *gb = b; 1351 1352 if (ga->guid > gb->guid) 1353 return 1; 1354 if (ga->guid < gb->guid) 1355 return -1; 1356 return 0; 1357 } 1358 1359 static int 1360 zev_zevstat(int fd, char *s_interval, char *s_count, char *outfile) 1361 { 1362 uint64_t interval = 1000; 1363 uint64_t ms; 1364 uint64_t t_until; 1365 uint64_t t_now; 1366 int cnt = -1; 1367 struct pollfd pfd[1]; 1368 int ret; 1369 char buf[4096]; 1370 zev_event_t *ev; 1371 int off = 0; 1372 zev_ioctl_add_queue_t aq; 1373 int q_fd; 1374 zev_guidtrack_t *gt; 1375 FILE *out = stdout; 1376 struct stat st; 1377 char filename[MAXPATHLEN]; 1378 int retry; 1379 1380 if (outfile) { 1381 retry = 0; 1382 strncpy(filename, outfile, sizeof(filename)); 1383 while (stat(filename, &st) == 0) { 1384 /* file exists */ 1385 snprintf(filename, sizeof(filename), 1386 "%s.%d", outfile, retry); 1387 retry++; 1388 } 1389 out = fopen(filename, "wb+"); 1390 if (!out) { 1391 perror("opening output file failed"); 1392 return (EXIT_FAILURE); 1393 } 1394 } 1395 1396 memset(&zevstat, 0, sizeof(zevstat)); 1397 avl_create(&zevstat.guids_runtime, zev_evcompar, 1398 sizeof(zev_guidtrack_t), 1399 offsetof(zev_guidtrack_t, avl_runtime)); 1400 avl_create(&zevstat.guids_interval, zev_evcompar, 1401 sizeof(zev_guidtrack_t), 1402 offsetof(zev_guidtrack_t, avl_interval)); 1403 1404 if (s_interval) { 1405 interval = atol(s_interval); 1406 if (interval == 0) { 1407 fprintf(stderr, "invalid interval.\n"); 1408 return (EXIT_FAILURE); 1409 } 1410 interval *= 1000; 1411 } 1412 if (s_count) { 1413 cnt = atol(s_count); 1414 if (interval == 0) { 1415 fprintf(stderr, "invalid count.\n"); 1416 return (EXIT_FAILURE); 1417 } 1418 } 1419 1420 aq.zev_max_queue_len = 1024 * 1024; 1421 aq.zev_flags = ZEV_FL_INITIALLY_EMPTY; 1422 snprintf(aq.zev_name, ZEV_MAX_QUEUE_NAME_LEN, 1423 "zevstat.%ld.%ld", time(NULL), getpid()); 1424 aq.zev_namelen = strlen(aq.zev_name); 1425 1426 if (ioctl(fd, ZEV_IOC_ADD_QUEUE, &aq)) { 1427 perror("adding temporary queue failed"); 1428 return (EXIT_FAILURE); 1429 } 1430 1431 snprintf(buf, sizeof(buf), 1432 "/devices/pseudo/zev@0:%s", aq.zev_name); 1433 q_fd = open(buf, O_RDONLY); 1434 if (q_fd < 0) { 1435 perror("opening queue device failed"); 1436 return (EXIT_FAILURE); 1437 } 1438 1439 pfd[0].fd = q_fd; 1440 pfd[0].events = POLLIN; 1441 1442 /* drain queue */ 1443 while ((ret = poll(pfd, 1, 0)) > 0) { 1444 if (read(q_fd, buf, sizeof(buf)) < 0) { 1445 perror("read failed"); 1446 close(q_fd); 1447 return(EXIT_FAILURE); 1448 } 1449 } 1450 if (ret < 0) { 1451 perror("poll failed"); 1452 close(q_fd); 1453 return(EXIT_FAILURE); 1454 } 1455 1456 fprintf(out, "timestamp events tevents guids tguids"); 1457 if (verbose) { 1458 fprintf(out, " error mark mount umount zvol_w "); 1459 fprintf(out, "zvol_t close create mkdir mxattr "); 1460 fprintf(out, "remove rmdir link symlnk rename "); 1461 fprintf(out, "write trunc setatt acl"); 1462 } 1463 fprintf(out, "\n"); 1464 while (cnt) { 1465 t_until = gethrtime() + (interval * 1000000); 1466 ms = interval; 1467 do { 1468 ret = poll(pfd, 1, ms); 1469 t_now = gethrtime(); 1470 if (t_now < t_until) { 1471 ms = t_until - t_now; 1472 ms /= 1000000ull; 1473 } 1474 if (ret < 0) { 1475 perror("poll failed"); 1476 close(q_fd); 1477 return(EXIT_FAILURE); 1478 } 1479 if (!(pfd[0].revents & POLLIN)) 1480 continue; 1481 /* data available */ 1482 ret = read(q_fd, buf, sizeof(buf)); 1483 if (ret < 0) { 1484 perror("read failed"); 1485 close(q_fd); 1486 return(EXIT_FAILURE); 1487 } 1488 if (ret == 0) 1489 continue; 1490 while (ret > off) { 1491 ev = (zev_event_t *)(buf + off); 1492 zev_eventstat(buf + off, ev->header.record_len); 1493 off += ev->header.record_len; 1494 } 1495 off = 0; 1496 } while ((t_now) < t_until && (ms > 0)); 1497 zev_eventstat_interval(out); 1498 if (cnt > 0) 1499 cnt--; 1500 } 1501 close(q_fd); 1502 if (outfile) 1503 fclose(out); 1504 while (gt = avl_first(&zevstat.guids_interval)) 1505 avl_remove(&zevstat.guids_interval, gt); 1506 while (gt = avl_first(&zevstat.guids_runtime)) { 1507 avl_remove(&zevstat.guids_runtime, gt); 1508 free(gt); 1509 } 1510 return EXIT_SUCCESS; 1511 } 1512 1513 static int 1514 zev_report(int fd, char *basename) 1515 { 1516 char filename[MAXPATHLEN]; 1517 char count[10]; 1518 time_t now; 1519 time_t midnight; 1520 struct tm tm; 1521 int minutes; 1522 int ret; 1523 1524 verbose++; 1525 while (1) { 1526 now = time(NULL); 1527 localtime_r(&now, &tm); 1528 snprintf(filename, sizeof(filename), "%s.%04d-%02d-%02d", 1529 basename, tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday); 1530 tm.tm_sec = 0; 1531 tm.tm_min = 0; 1532 tm.tm_hour = 0; 1533 tm.tm_mday++; /* works for Jan 32nd, Feb 30th, etc. */ 1534 midnight = mktime(&tm); 1535 if (now % 60) 1536 sleep(60 - (now % 60)); 1537 minutes = (midnight - time(NULL)) / 60; 1538 snprintf(count, sizeof(count), "%d", minutes); 1539 ret = zev_zevstat(fd, "60", count, filename); 1540 if (ret) 1541 return EXIT_FAILURE; 1542 } 1543 return EXIT_SUCCESS; /* never reached */ 1544 } 1545 1546 static int 1547 zev_get_zev_version(int fd) 1548 { 1549 zev_ioctl_get_zev_version vi; 1550 1551 if (ioctl(fd, ZEV_IOC_GET_ZEV_VERSION, &vi)) { 1552 perror("getting zev cersion info failed"); 1553 return (EXIT_FAILURE); 1554 } 1555 1556 printf("zev major version: %llu\n", vi.zev_major_version); 1557 printf("zev minor version: %llu\n", vi.zev_minor_version); 1558 return 0; 1559 } 1560 1561 static void 1562 zev_sigint(int sig) 1563 { 1564 fflush(stdout); 1565 } 1566 1567 int 1568 main(int argc, char **argv) 1569 { 1570 int fd; 1571 int c; 1572 extern char *optarg; 1573 int create_tmp_queue = 1; 1574 char buf[MAXPATHLEN]; 1575 int mode = 0; 1576 char *arg = NULL; 1577 char *arg2 = NULL; 1578 char *p; 1579 1580 sigset(SIGINT, zev_sigint); 1581 1582 /* open device */ 1583 fd = open(zev_device, O_RDONLY); 1584 if (fd < 0) { 1585 perror("opening zev device failed"); 1586 return EXIT_FAILURE; 1587 } 1588 1589 p = strrchr(argv[0], '/'); 1590 if (!p) { 1591 p = argv[0]; 1592 } else { 1593 p++; 1594 } 1595 if (!strcmp(p, "zevstat")) { 1596 mode = MD_ZEVSTAT; 1597 if (argc < 2) 1598 zevstat_usage(argv[0]); 1599 if (!strcmp(argv[1], "-v")) { 1600 if (argc < 3) 1601 zevstat_usage(argv[0]); 1602 verbose++; 1603 arg = argv[2]; 1604 arg2 = argv[3]; 1605 } else { 1606 arg = argv[1]; 1607 arg2 = argv[2]; 1608 } 1609 return zev_zevstat(fd, arg, arg2, NULL); 1610 } else if(!strcmp(p, "zevreport")) { 1611 mode = MD_ZEV_REPORT; 1612 if (argc != 2) 1613 zevreport_usage(argv[0]); 1614 return zev_report(fd, argv[1]); 1615 } 1616 1617 while ((c = getopt(argc, argv, 1618 "a:A:b:B:c:d:Df:ghk:lL:m:M:pP:q:Q:r:R:st:T:vV?")) != -1) { 1619 switch(c) { 1620 case 'g': 1621 grep_friendly++; 1622 verbose++; 1623 break; 1624 case 'v': 1625 verbose++; 1626 break; 1627 case 's': 1628 mode = MD_STATISTICS; 1629 break; 1630 case 'p': 1631 mode = MD_POLL_EVENTS; 1632 break; 1633 case 'c': 1634 mode = MD_CHECKSUMS; 1635 arg = optarg; 1636 break; 1637 case 'D': 1638 mode = MD_DEBUG_INFO; 1639 break; 1640 case 'd': 1641 close(fd); 1642 zev_device = optarg; 1643 fd = open(zev_device, O_RDONLY); 1644 if (fd < 0) { 1645 perror("opening zev device failed"); 1646 return EXIT_FAILURE; 1647 } 1648 create_tmp_queue = 0; 1649 break; 1650 case 'q': 1651 snprintf(buf, sizeof(buf), 1652 "/devices/pseudo/zev@0:%s", optarg); 1653 close(fd); 1654 zev_device = buf; 1655 fd = open(zev_device, O_RDONLY); 1656 if (fd < 0) { 1657 perror("opening zev device failed"); 1658 return EXIT_FAILURE; 1659 } 1660 create_tmp_queue = 0; 1661 break; 1662 case 'f': 1663 fd = open(optarg, O_RDONLY); 1664 if (fd < 0) { 1665 perror("opening spool file failed"); 1666 return EXIT_FAILURE; 1667 } 1668 mode = MD_DUMP_SPOOL; 1669 break; 1670 case 'l': 1671 mode = MD_LIST_QUEUES; 1672 break; 1673 case 'Q': 1674 mode = MD_SET_GLOBAL_MAX_QUEUE_LEN; 1675 arg = optarg; 1676 break; 1677 case 'L': 1678 mode = MD_SET_MAX_QUEUE_LEN; 1679 arg = optarg; 1680 arg2 = argv[optind]; 1681 break; 1682 case 'T': 1683 mode = MD_ZEVSTAT; 1684 arg = optarg; 1685 arg2 = argv[optind]; 1686 break; 1687 case 'R': 1688 mode = MD_ZEV_REPORT; 1689 arg = optarg; 1690 break; 1691 case 't': 1692 mode = MD_SET_POLL_WAKEUP_QUEUE_LEN; 1693 arg = optarg; 1694 arg2 = argv[optind]; 1695 break; 1696 case 'm': 1697 mode = MD_MUTE_POOL; 1698 arg = optarg; 1699 break; 1700 case 'M': 1701 mode = MD_UNMUTE_POOL; 1702 arg = optarg; 1703 break; 1704 case 'k': 1705 mode = MD_MARK; 1706 arg = optarg; 1707 break; 1708 case 'a': 1709 mode = MD_ADD_QUEUE; 1710 arg = optarg; 1711 break; 1712 case 'A': 1713 mode = MD_ADD_BLOCKING_QUEUE; 1714 arg = optarg; 1715 break; 1716 case 'r': 1717 mode = MD_REMOVE_QUEUE; 1718 arg = optarg; 1719 break; 1720 case 'b': 1721 mode = MD_QUEUE_BLOCKING; 1722 arg = optarg; 1723 break; 1724 case 'B': 1725 mode = MD_QUEUE_NONBLOCKING; 1726 arg = optarg; 1727 break; 1728 case 'P': 1729 mode = MD_QUEUE_PROPERTIES; 1730 arg = optarg; 1731 break; 1732 case 'V': 1733 mode = MD_GET_ZEV_VERSION; 1734 break; 1735 case 'h': 1736 case '?': 1737 default: 1738 usage(argv[0]); 1739 } 1740 } 1741 1742 switch (mode) { 1743 case MD_STATISTICS: 1744 return zev_statistics(fd); 1745 case MD_POLL_EVENTS: 1746 return zev_poll_events(fd, create_tmp_queue); 1747 case MD_DUMP_SPOOL: 1748 return zev_dump_spool(fd); 1749 case MD_CHECKSUMS: 1750 return zev_checksum(fd, arg); 1751 case MD_DEBUG_INFO: 1752 return zev_debug_info(fd); 1753 case MD_LIST_QUEUES: 1754 return zev_list_queues(fd); 1755 case MD_SET_GLOBAL_MAX_QUEUE_LEN: 1756 return zev_set_global_max_queue_len(fd, arg); 1757 case MD_SET_MAX_QUEUE_LEN: 1758 return zev_set_max_queue_len(fd, arg, arg2); 1759 case MD_SET_POLL_WAKEUP_QUEUE_LEN: 1760 return zev_set_poll_wakeup_queue_len(fd, arg, arg2); 1761 case MD_ZEVSTAT: 1762 return zev_zevstat(fd, arg, arg2, NULL); 1763 case MD_ZEV_REPORT: 1764 return zev_report(fd, arg); 1765 case MD_MUTE_POOL: 1766 return zev_mute_pool(fd, arg); 1767 case MD_UNMUTE_POOL: 1768 return zev_unmute_pool(fd, arg); 1769 case MD_MARK: 1770 return zev_mark(fd, arg); 1771 case MD_ADD_QUEUE: 1772 return zev_add_queue(fd, arg, 0); 1773 case MD_ADD_BLOCKING_QUEUE: 1774 return zev_add_queue(fd, arg, 1); 1775 case MD_REMOVE_QUEUE: 1776 return zev_remove_queue(fd, arg); 1777 case MD_QUEUE_BLOCKING: 1778 return zev_queue_blocking(fd, arg, 0); 1779 case MD_QUEUE_NONBLOCKING: 1780 return zev_queue_blocking(fd, arg, 1); 1781 case MD_QUEUE_PROPERTIES: 1782 return zev_queue_properties(fd, arg); 1783 case MD_GET_ZEV_VERSION: 1784 return zev_get_zev_version(fd); 1785 default: 1786 close(fd); 1787 usage(argv[0]); 1788 return EXIT_FAILURE; 1789 }; 1790 } 1791 1792