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