1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 22 /* 23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved. 24 * Copyright 2020 Nexenta by DDN, Inc. All rights reserved. 25 * Copyright 2023 RackTop Systems, Inc. 26 */ 27 28 /* 29 * smbstat: Server Message Block File System statistics 30 * 31 * The statistics this CLI displays come from two sources: 32 * 33 * 1) The kernel module 'smbsrv'. 34 * 2) The SMB workers task queue statistics the task queue manager of Solaris 35 * maintains. 36 * 37 * The flow of the code is the following: 38 * 39 * 40 * +----------------+ 41 * | Initialization | 42 * +----------------+ 43 * | 44 * | 45 * v 46 * +--------------------------* 47 * | Take a snapshot the data | <--------+ 48 * +--------------------------+ | 49 * | | 50 * | | 51 * v | 52 * +----------------------+ | 53 * | Process the snapshot | | 54 * +----------------------+ | 55 * | | 56 * | | 57 * v | 58 * +------------------------------------+ | 59 * | Print the result of the processing | | 60 * +------------------------------------+ | 61 * | | 62 * | | 63 * v | 64 * Yes --------------- | 65 * +------------ < interval == 0 ? > | 66 * | --------------- | 67 * | | | 68 * | | No | 69 * | v | 70 * | +------------------------+ | 71 * | | Sleep for the duration | ----------+ 72 * | | of the interval. | 73 * | +------------------------+ 74 * | 75 * +---------------------+ 76 * | 77 * v 78 * 79 * Exit 80 * 81 * There are two sets of snapshots. One set for the smbsrv module and the other 82 * for the task queue (SMB workers). Each set contains 2 snapshots. One is 83 * labeled 'current' the other one 'previous'. Their role changes after each 84 * snapshot. The 'current' becomes 'previous' and vice versa. 85 * The first snapshot taken is compared against the data gathered since the 86 * smbsrv module was loaded. Subsequent snapshots will be compared against the 87 * previous snapshot. 88 */ 89 90 #include <stdio.h> 91 #include <stdlib.h> 92 #include <unistd.h> 93 #include <kstat.h> 94 #include <stdarg.h> 95 #include <errno.h> 96 #include <inttypes.h> 97 #include <strings.h> 98 #include <utility.h> 99 #include <libintl.h> 100 #include <zone.h> 101 #include <termios.h> 102 #include <stropts.h> 103 #include <math.h> 104 #include <umem.h> 105 #include <locale.h> 106 #include <sys/processor.h> 107 #include <smbsrv/smb_kstat.h> 108 #include <smbsrv/smb.h> 109 #include <smbsrv/smb2.h> 110 111 #if !defined(TEXT_DOMAIN) 112 #define TEXT_DOMAIN "SYS_TEST" 113 #endif /* TEXT_DOMAIN */ 114 115 #define SMBSTAT_ID_NO_CPU -1 116 #define SMBSTAT_SNAPSHOT_COUNT 2 /* Must be a power of 2 */ 117 #define SMBSTAT_SNAPSHOT_MASK (SMBSTAT_SNAPSHOT_COUNT - 1) 118 119 #define SMBSTAT_HELP \ 120 "Usage: smbstat [-acnrtuz] [interval]\n" \ 121 " -c: display counters\n" \ 122 " -t: display throughput\n" \ 123 " -u: display utilization\n" \ 124 " -r: display requests\n" \ 125 " -a: all the requests (supported and unsupported)\n" \ 126 " -z: skip the requests not received\n" \ 127 " -n: display in alphabetic order\n" \ 128 " interval: refresh cycle in seconds\n" 129 130 #define SMBSRV_COUNTERS_BANNER "\n nbt tcp users trees files pipes\n" 131 #define SMBSRV_COUNTERS_FORMAT "%5d %5d %5d %5d %5d %5d\n" 132 133 #define SMBSRV_THROUGHPUT_BANNER \ 134 "\nrbytes/s tbytes/s reqs/s reads/s writes/s\n" 135 #define SMBSRV_THROUGHPUT_FORMAT \ 136 "%1.3e %1.3e %1.3e %1.3e %1.3e\n" 137 138 #define SMBSRV_UTILIZATION_BANNER \ 139 "\n wcnt rcnt wtime rtime" \ 140 " w%% r%% u%% sat usr%% sys%% idle%%\n" 141 #define SMBSRV_UTILIZATION_FORMAT \ 142 "%1.3e %1.3e %1.3e %1.3e %3.0f %3.0f %3.0f %s " \ 143 "%3.0f %3.0f %3.0f\n" 144 145 #define SMBSRV_REQUESTS_BANNER \ 146 "\n%30s code %% rbytes/s tbytes/s req/s rt-mean" \ 147 " rt-stddev\n" 148 #define SMBSRV_REQUESTS_FORMAT \ 149 "%30s %02X %3.0f %1.3e %1.3e %1.3e %1.3e %1.3e\n" 150 151 typedef enum { 152 CPU_TICKS_IDLE = 0, 153 CPU_TICKS_USER, 154 CPU_TICKS_KERNEL, 155 CPU_TICKS_SENTINEL 156 } cpu_state_idx_t; 157 158 typedef struct smbstat_cpu_snapshot { 159 processorid_t cs_id; 160 int cs_state; 161 uint64_t cs_ticks[CPU_TICKS_SENTINEL]; 162 } smbstat_cpu_snapshot_t; 163 164 typedef struct smbstat_srv_snapshot { 165 hrtime_t ss_snaptime; 166 smbsrv_kstats_t ss_data; 167 } smbstat_srv_snapshot_t; 168 169 typedef struct smbstat_wrk_snapshot { 170 uint64_t ws_nbacklog; 171 } smbstat_wrk_snapshot_t; 172 173 typedef struct smbstat_req_info { 174 char ri_name[KSTAT_STRLEN]; 175 int ri_opcode; 176 double ri_pct; 177 double ri_tbs; 178 double ri_rbs; 179 double ri_rqs; 180 double ri_stddev; 181 double ri_mean; 182 } smbstat_req_info_t; 183 184 typedef struct smbstat_srv_info { 185 double si_hretime; 186 double si_etime; 187 double si_total_nreqs; 188 /* 189 * Counters 190 */ 191 uint32_t si_nbt_sess; /* NBT sessions */ 192 uint32_t si_tcp_sess; /* TCP sessions */ 193 uint32_t si_users; /* Users logged in */ 194 uint32_t si_trees; /* Trees connected */ 195 uint32_t si_files; /* Open files */ 196 uint32_t si_pipes; /* Open pipes */ 197 /* 198 * Throughput of the server 199 */ 200 double si_tbs; /* Bytes transmitted / second */ 201 double si_rbs; /* Bytes received / second */ 202 double si_rqs; /* Requests treated / second */ 203 double si_rds; /* Reads treated / second */ 204 double si_wrs; /* Writes treated / second */ 205 /* 206 * Utilization of the server 207 */ 208 double si_wpct; /* */ 209 double si_rpct; /* */ 210 double si_upct; /* Utilization in % */ 211 double si_avw; /* Average number of requests waiting */ 212 double si_avr; /* Average number of requests running */ 213 double si_wserv; /* Average waiting time */ 214 double si_rserv; /* Average running time */ 215 boolean_t si_sat; 216 double si_ticks[CPU_TICKS_SENTINEL]; 217 /* 218 * Latency & Throughput per request 219 */ 220 smbstat_req_info_t si_reqs1[SMBSRV_KS_NREQS1]; 221 smbstat_req_info_t si_reqs2[SMBSRV_KS_NREQS2]; 222 } smbstat_srv_info_t; 223 224 static void smbstat_init(void); 225 static void smbstat_fini(void); 226 static void smbstat_kstat_snapshot(void); 227 static void smbstat_kstat_process(void); 228 static void smbstat_kstat_print(void); 229 230 static void smbstat_print_counters(void); 231 static void smbstat_print_throughput(void); 232 static void smbstat_print_utilization(void); 233 static void smbstat_print_requests(void); 234 235 static void smbstat_cpu_init(void); 236 static void smbstat_cpu_fini(void); 237 static smbstat_cpu_snapshot_t *smbstat_cpu_current_snapshot(void); 238 static smbstat_cpu_snapshot_t *smbstat_cpu_previous_snapshot(void); 239 static void smbstat_cpu_snapshot(void); 240 static void smbstat_cpu_process(void); 241 242 static void smbstat_wrk_init(void); 243 static void smbstat_wrk_fini(void); 244 static void smbstat_wrk_snapshot(void); 245 static void smbstat_wrk_process(void); 246 static smbstat_wrk_snapshot_t *smbstat_wrk_current_snapshot(void); 247 248 static void smbstat_srv_init(void); 249 static void smbstat_srv_fini(void); 250 static void smbstat_srv_snapshot(void); 251 static void smbstat_srv_process(void); 252 static void smbstat_srv_process_counters(smbstat_srv_snapshot_t *); 253 static void smbstat_srv_process_throughput(smbstat_srv_snapshot_t *, 254 smbstat_srv_snapshot_t *); 255 static void smbstat_srv_process_utilization(smbstat_srv_snapshot_t *, 256 smbstat_srv_snapshot_t *); 257 static void smbstat_srv_process_requests(smbstat_srv_snapshot_t *, 258 smbstat_srv_snapshot_t *); 259 static void smbstat_srv_process_one_req(smbstat_req_info_t *, 260 smb_kstat_req_t *, smb_kstat_req_t *, boolean_t); 261 262 static smbstat_srv_snapshot_t *smbstat_srv_current_snapshot(void); 263 static smbstat_srv_snapshot_t *smbstat_srv_previous_snapshot(void); 264 265 static void *smbstat_zalloc(size_t); 266 static void smbstat_free(void *, size_t); 267 static void smbstat_fail(int, char *, ...); 268 static void smbstat_snapshot_inc_idx(void); 269 static void smbstat_usage(FILE *, int) __NORETURN; 270 static uint_t smbstat_strtoi(char const *, char *); 271 static double smbstat_hrtime_delta(hrtime_t, hrtime_t); 272 static double smbstat_sub_64(uint64_t, uint64_t); 273 static void smbstat_req_order(void); 274 static double smbstat_zero(double); 275 static void smbstat_termio_init(void); 276 277 #pragma does_not_return(smbstat_fail, smbstat_usage) 278 279 static char *smbstat_cpu_states[CPU_TICKS_SENTINEL] = { 280 "cpu_ticks_idle", 281 "cpu_ticks_user", 282 "cpu_ticks_kernel" 283 }; 284 285 static boolean_t smbstat_opt_a = B_FALSE; /* all */ 286 static boolean_t smbstat_opt_c = B_FALSE; /* counters */ 287 static boolean_t smbstat_opt_n = B_FALSE; /* by name */ 288 static boolean_t smbstat_opt_u = B_FALSE; /* utilization */ 289 static boolean_t smbstat_opt_t = B_FALSE; /* throughput */ 290 static boolean_t smbstat_opt_r = B_FALSE; /* requests */ 291 static boolean_t smbstat_opt_z = B_FALSE; /* non-zero requests */ 292 293 static uint_t smbstat_interval = 0; 294 static long smbstat_nrcpus = 0; 295 static kstat_ctl_t *smbstat_ksc = NULL; 296 static kstat_t *smbstat_srv_ksp = NULL; 297 static kstat_t *smbstat_wrk_ksp = NULL; 298 static struct winsize smbstat_ws; 299 static uint16_t smbstat_rows = 0; 300 301 static int smbstat_snapshot_idx = 0; 302 static smbstat_cpu_snapshot_t *smbstat_cpu_snapshots[SMBSTAT_SNAPSHOT_COUNT]; 303 static smbstat_srv_snapshot_t smbstat_srv_snapshots[SMBSTAT_SNAPSHOT_COUNT]; 304 static smbstat_wrk_snapshot_t smbstat_wrk_snapshots[SMBSTAT_SNAPSHOT_COUNT]; 305 static smbstat_srv_info_t smbstat_srv_info; 306 307 /* 308 * main 309 */ 310 int 311 main(int argc, char *argv[]) 312 { 313 int c; 314 315 (void) setlocale(LC_ALL, ""); 316 (void) textdomain(TEXT_DOMAIN); 317 318 if (is_system_labeled()) { 319 (void) fprintf(stderr, 320 gettext("%s: Trusted Extensions not supported.\n"), 321 argv[0]); 322 return (1); 323 } 324 325 while ((c = getopt(argc, argv, "achnrtuz")) != EOF) { 326 switch (c) { 327 case 'a': 328 smbstat_opt_a = B_TRUE; 329 break; 330 case 'n': 331 smbstat_opt_n = B_TRUE; 332 break; 333 case 'u': 334 smbstat_opt_u = B_TRUE; 335 break; 336 case 'c': 337 smbstat_opt_c = B_TRUE; 338 break; 339 case 'r': 340 smbstat_opt_r = B_TRUE; 341 break; 342 case 't': 343 smbstat_opt_t = B_TRUE; 344 break; 345 case 'z': 346 smbstat_opt_z = B_TRUE; 347 break; 348 case 'h': 349 smbstat_usage(stdout, 0); 350 default: 351 smbstat_usage(stderr, 1); 352 } 353 } 354 355 if (!smbstat_opt_u && 356 !smbstat_opt_c && 357 !smbstat_opt_r && 358 !smbstat_opt_t) { 359 /* Default options when none is specified. */ 360 smbstat_opt_u = B_TRUE; 361 smbstat_opt_t = B_TRUE; 362 } 363 364 if (optind < argc) { 365 smbstat_interval = 366 smbstat_strtoi(argv[optind], "invalid count"); 367 optind++; 368 } 369 370 if ((argc - optind) > 1) 371 smbstat_usage(stderr, 1); 372 373 (void) atexit(smbstat_fini); 374 smbstat_init(); 375 for (;;) { 376 smbstat_kstat_snapshot(); 377 smbstat_kstat_process(); 378 smbstat_kstat_print(); 379 if (smbstat_interval == 0) 380 break; 381 (void) sleep(smbstat_interval); 382 smbstat_snapshot_inc_idx(); 383 } 384 return (0); 385 } 386 387 /* 388 * smbstat_init 389 * 390 * Global initialization. 391 */ 392 static void 393 smbstat_init(void) 394 { 395 if ((smbstat_ksc = kstat_open()) == NULL) 396 smbstat_fail(1, gettext("kstat_open(): can't open /dev/kstat")); 397 398 smbstat_cpu_init(); 399 smbstat_srv_init(); 400 smbstat_wrk_init(); 401 smbstat_req_order(); 402 } 403 404 /* 405 * smbstat_fini 406 * 407 * Releases the resources smbstat_init() allocated. 408 */ 409 static void 410 smbstat_fini(void) 411 { 412 smbstat_wrk_fini(); 413 smbstat_srv_fini(); 414 smbstat_cpu_fini(); 415 (void) kstat_close(smbstat_ksc); 416 } 417 418 /* 419 * smbstat_kstat_snapshot 420 * 421 * Takes a snapshot of the data. 422 */ 423 static void 424 smbstat_kstat_snapshot(void) 425 { 426 smbstat_cpu_snapshot(); 427 smbstat_srv_snapshot(); 428 smbstat_wrk_snapshot(); 429 } 430 431 /* 432 * smbstat_kstat_process 433 */ 434 static void 435 smbstat_kstat_process(void) 436 { 437 smbstat_cpu_process(); 438 smbstat_srv_process(); 439 smbstat_wrk_process(); 440 } 441 442 /* 443 * smbstat_kstat_print 444 * 445 * Print the data processed. 446 */ 447 static void 448 smbstat_kstat_print(void) 449 { 450 smbstat_termio_init(); 451 smbstat_print_counters(); 452 smbstat_print_throughput(); 453 smbstat_print_utilization(); 454 smbstat_print_requests(); 455 (void) fflush(stdout); 456 } 457 458 /* 459 * smbstat_print_counters 460 * 461 * Displays the SMB server counters (session, users...). 462 */ 463 static void 464 smbstat_print_counters(void) 465 { 466 if (!smbstat_opt_c) 467 return; 468 469 if (smbstat_opt_u || smbstat_opt_r || smbstat_opt_t || 470 (smbstat_rows == 0) || (smbstat_rows >= smbstat_ws.ws_row)) { 471 (void) printf(SMBSRV_COUNTERS_BANNER); 472 smbstat_rows = 1; 473 } 474 475 (void) printf(SMBSRV_COUNTERS_FORMAT, 476 smbstat_srv_info.si_nbt_sess, 477 smbstat_srv_info.si_tcp_sess, 478 smbstat_srv_info.si_users, 479 smbstat_srv_info.si_trees, 480 smbstat_srv_info.si_files, 481 smbstat_srv_info.si_pipes); 482 483 ++smbstat_rows; 484 } 485 /* 486 * smbstat_print_throughput 487 * 488 * Formats the SMB server throughput output. 489 */ 490 static void 491 smbstat_print_throughput(void) 492 { 493 if (!smbstat_opt_t) 494 return; 495 496 if (smbstat_opt_u || smbstat_opt_r || smbstat_opt_c || 497 (smbstat_rows == 0) || (smbstat_rows >= smbstat_ws.ws_row)) { 498 (void) printf(SMBSRV_THROUGHPUT_BANNER); 499 smbstat_rows = 1; 500 } 501 (void) printf(SMBSRV_THROUGHPUT_FORMAT, 502 smbstat_zero(smbstat_srv_info.si_rbs), 503 smbstat_zero(smbstat_srv_info.si_tbs), 504 smbstat_zero(smbstat_srv_info.si_rqs), 505 smbstat_zero(smbstat_srv_info.si_rds), 506 smbstat_zero(smbstat_srv_info.si_wrs)); 507 508 ++smbstat_rows; 509 } 510 511 /* 512 * smbstat_print_utilization 513 */ 514 static void 515 smbstat_print_utilization(void) 516 { 517 char *sat; 518 if (!smbstat_opt_u) 519 return; 520 521 if (smbstat_opt_t || smbstat_opt_r || smbstat_opt_c || 522 (smbstat_rows == 0) || (smbstat_rows >= smbstat_ws.ws_row)) { 523 (void) printf(SMBSRV_UTILIZATION_BANNER); 524 smbstat_rows = 1; 525 } 526 527 if (smbstat_srv_info.si_sat) 528 sat = "yes"; 529 else 530 sat = "no "; 531 532 (void) printf(SMBSRV_UTILIZATION_FORMAT, 533 smbstat_srv_info.si_avw, 534 smbstat_srv_info.si_avr, 535 smbstat_srv_info.si_wserv, 536 smbstat_srv_info.si_rserv, 537 smbstat_zero(smbstat_srv_info.si_wpct), 538 smbstat_zero(smbstat_srv_info.si_rpct), 539 smbstat_zero(smbstat_srv_info.si_upct), 540 sat, 541 smbstat_srv_info.si_ticks[CPU_TICKS_USER], 542 smbstat_srv_info.si_ticks[CPU_TICKS_KERNEL], 543 smbstat_srv_info.si_ticks[CPU_TICKS_IDLE]); 544 545 ++smbstat_rows; 546 } 547 548 /* 549 * smbstat_print_requests 550 */ 551 static void 552 smbstat_print_requests(void) 553 { 554 smbstat_req_info_t *prq; 555 int i; 556 557 if (!smbstat_opt_r) 558 return; 559 560 (void) printf(SMBSRV_REQUESTS_BANNER, " "); 561 562 prq = smbstat_srv_info.si_reqs1; 563 for (i = 0; i < SMBSRV_KS_NREQS1; i++) { 564 if (!smbstat_opt_a && 565 strncmp(prq[i].ri_name, "Invalid", sizeof ("Invalid")) == 0) 566 continue; 567 568 if (!smbstat_opt_z || (prq[i].ri_pct != 0)) { 569 (void) printf(SMBSRV_REQUESTS_FORMAT, 570 prq[i].ri_name, 571 prq[i].ri_opcode, 572 smbstat_zero(prq[i].ri_pct), 573 smbstat_zero(prq[i].ri_rbs), 574 smbstat_zero(prq[i].ri_tbs), 575 smbstat_zero(prq[i].ri_rqs), 576 prq[i].ri_mean, 577 prq[i].ri_stddev); 578 } 579 } 580 581 prq = smbstat_srv_info.si_reqs2; 582 for (i = 0; i < SMBSRV_KS_NREQS2; i++) { 583 if (!smbstat_opt_a && i == SMB2_INVALID_CMD) 584 continue; 585 586 if (!smbstat_opt_z || (prq[i].ri_pct != 0)) { 587 (void) printf(SMBSRV_REQUESTS_FORMAT, 588 prq[i].ri_name, 589 prq[i].ri_opcode, 590 smbstat_zero(prq[i].ri_pct), 591 smbstat_zero(prq[i].ri_rbs), 592 smbstat_zero(prq[i].ri_tbs), 593 smbstat_zero(prq[i].ri_rqs), 594 prq[i].ri_mean, 595 prq[i].ri_stddev); 596 } 597 } 598 } 599 600 /* 601 * smbstat_cpu_init 602 */ 603 static void 604 smbstat_cpu_init(void) 605 { 606 size_t size; 607 int i; 608 609 smbstat_nrcpus = sysconf(_SC_CPUID_MAX) + 1; 610 size = smbstat_nrcpus * sizeof (smbstat_cpu_snapshot_t); 611 612 for (i = 0; i < SMBSTAT_SNAPSHOT_COUNT; i++) 613 smbstat_cpu_snapshots[i] = smbstat_zalloc(size); 614 } 615 616 /* 617 * smbstat_cpu_fini 618 */ 619 static void 620 smbstat_cpu_fini(void) 621 { 622 size_t size; 623 int i; 624 625 size = smbstat_nrcpus * sizeof (smbstat_cpu_snapshot_t); 626 627 for (i = 0; i < SMBSTAT_SNAPSHOT_COUNT; i++) 628 smbstat_free(smbstat_cpu_snapshots[i], size); 629 } 630 631 /* 632 * smbstat_cpu_current_snapshot 633 */ 634 static smbstat_cpu_snapshot_t * 635 smbstat_cpu_current_snapshot(void) 636 { 637 return (smbstat_cpu_snapshots[smbstat_snapshot_idx]); 638 } 639 640 /* 641 * smbstat_cpu_previous_snapshot 642 */ 643 static smbstat_cpu_snapshot_t * 644 smbstat_cpu_previous_snapshot(void) 645 { 646 int idx; 647 648 idx = (smbstat_snapshot_idx - 1) & SMBSTAT_SNAPSHOT_MASK; 649 return (smbstat_cpu_snapshots[idx]); 650 } 651 652 /* 653 * smbstat_cpu_snapshot 654 */ 655 static void 656 smbstat_cpu_snapshot(void) 657 { 658 kstat_t *ksp; 659 kstat_named_t *ksn; 660 smbstat_cpu_snapshot_t *curr; 661 long i; 662 int j; 663 664 curr = smbstat_cpu_current_snapshot(); 665 666 for (i = 0; i < smbstat_nrcpus; i++, curr++) { 667 curr->cs_id = SMBSTAT_ID_NO_CPU; 668 curr->cs_state = p_online(i, P_STATUS); 669 /* If no valid CPU is present, move on to the next one */ 670 if (curr->cs_state != P_ONLINE && curr->cs_state != P_NOINTR) 671 continue; 672 673 curr->cs_id = i; 674 675 ksp = kstat_lookup(smbstat_ksc, "cpu", i, "sys"); 676 if (ksp == NULL) 677 smbstat_fail(1, 678 gettext("kstat_lookup('cpu sys %d') failed"), i); 679 680 if (kstat_read(smbstat_ksc, ksp, NULL) == -1) 681 smbstat_fail(1, 682 gettext("kstat_read('cpu sys %d') failed"), i); 683 684 for (j = 0; j < CPU_TICKS_SENTINEL; j++) { 685 ksn = kstat_data_lookup(ksp, smbstat_cpu_states[j]); 686 if (ksn == NULL) 687 smbstat_fail(1, 688 gettext("kstat_data_lookup('%s') failed"), 689 smbstat_cpu_states[j]); 690 curr->cs_ticks[j] = ksn->value.ui64; 691 } 692 } 693 } 694 695 /* 696 * smbstat_cpu_process 697 */ 698 static void 699 smbstat_cpu_process(void) 700 { 701 smbstat_cpu_snapshot_t *curr, *prev; 702 double total_ticks; 703 double agg_ticks[CPU_TICKS_SENTINEL]; 704 int i, j; 705 706 curr = smbstat_cpu_current_snapshot(); 707 prev = smbstat_cpu_previous_snapshot(); 708 bzero(agg_ticks, sizeof (agg_ticks)); 709 total_ticks = 0; 710 711 for (i = 0; i < smbstat_nrcpus; i++, curr++, prev++) { 712 for (j = 0; j < CPU_TICKS_SENTINEL; j++) { 713 agg_ticks[j] += smbstat_sub_64(curr->cs_ticks[j], 714 prev->cs_ticks[j]); 715 total_ticks += smbstat_sub_64(curr->cs_ticks[j], 716 prev->cs_ticks[j]); 717 } 718 } 719 720 for (j = 0; j < CPU_TICKS_SENTINEL; j++) 721 smbstat_srv_info.si_ticks[j] = 722 (agg_ticks[j] * 100.0) / total_ticks; 723 } 724 725 /* 726 * smbstat_wrk_init 727 */ 728 static void 729 smbstat_wrk_init(void) 730 { 731 smbstat_wrk_ksp = 732 kstat_lookup(smbstat_ksc, "unix", -1, SMBSRV_KSTAT_WORKERS); 733 if (smbstat_wrk_ksp == NULL) 734 smbstat_fail(1, 735 gettext("cannot retrieve smbsrv workers kstat\n")); 736 } 737 738 static void 739 smbstat_wrk_fini(void) 740 { 741 smbstat_wrk_ksp = NULL; 742 } 743 744 /* 745 * smbstat_wrk_snapshot 746 */ 747 static void 748 smbstat_wrk_snapshot(void) 749 { 750 smbstat_wrk_snapshot_t *curr; 751 kstat_named_t *kn; 752 753 curr = smbstat_wrk_current_snapshot(); 754 755 if (kstat_read(smbstat_ksc, smbstat_wrk_ksp, NULL) == -1) 756 smbstat_fail(1, gettext("kstat_read('%s') failed"), 757 smbstat_wrk_ksp->ks_name); 758 759 kn = kstat_data_lookup(smbstat_wrk_ksp, "nbacklog"); 760 if ((kn == NULL) || (kn->data_type != KSTAT_DATA_UINT64)) 761 smbstat_fail(1, gettext("kstat_read('%s') failed"), 762 "nbacklog"); 763 curr->ws_nbacklog = kn->value.ui64; 764 } 765 766 /* 767 * smbstat_wrk_process 768 */ 769 static void 770 smbstat_wrk_process(void) 771 { 772 smbstat_wrk_snapshot_t *curr; 773 774 curr = smbstat_wrk_current_snapshot(); 775 776 if (curr->ws_nbacklog != 0) 777 smbstat_srv_info.si_sat = B_TRUE; 778 else 779 smbstat_srv_info.si_sat = B_FALSE; 780 } 781 782 /* 783 * smbstat_wrk_current_snapshot 784 */ 785 static smbstat_wrk_snapshot_t * 786 smbstat_wrk_current_snapshot(void) 787 { 788 return (&smbstat_wrk_snapshots[smbstat_snapshot_idx]); 789 } 790 791 /* 792 * smbstat_srv_init 793 */ 794 static void 795 smbstat_srv_init(void) 796 { 797 smbstat_srv_ksp = kstat_lookup(smbstat_ksc, SMBSRV_KSTAT_MODULE, 798 getzoneid(), SMBSRV_KSTAT_STATISTICS); 799 if (smbstat_srv_ksp == NULL) 800 smbstat_fail(1, gettext("cannot retrieve smbsrv kstat\n")); 801 } 802 803 /* 804 * smbstat_srv_fini 805 */ 806 static void 807 smbstat_srv_fini(void) 808 { 809 smbstat_srv_ksp = NULL; 810 } 811 812 /* 813 * smbstat_srv_snapshot 814 * 815 * Take a snapshot of the smbsrv module statistics. 816 */ 817 static void 818 smbstat_srv_snapshot(void) 819 { 820 smbstat_srv_snapshot_t *curr; 821 822 curr = smbstat_srv_current_snapshot(); 823 824 if ((kstat_read(smbstat_ksc, smbstat_srv_ksp, NULL) == -1) || 825 (smbstat_srv_ksp->ks_data_size != sizeof (curr->ss_data))) 826 smbstat_fail(1, gettext("kstat_read('%s') failed"), 827 smbstat_srv_ksp->ks_name); 828 829 curr->ss_snaptime = smbstat_srv_ksp->ks_snaptime; 830 bcopy(smbstat_srv_ksp->ks_data, &curr->ss_data, sizeof (curr->ss_data)); 831 } 832 833 /* 834 * smbstat_srv_process 835 * 836 * Processes the snapshot data. 837 */ 838 static void 839 smbstat_srv_process(void) 840 { 841 smbstat_srv_snapshot_t *curr, *prev; 842 843 curr = smbstat_srv_current_snapshot(); 844 prev = smbstat_srv_previous_snapshot(); 845 846 if (prev->ss_snaptime == 0) 847 smbstat_srv_info.si_hretime = 848 smbstat_hrtime_delta(curr->ss_data.ks_start_time, 849 curr->ss_snaptime); 850 else 851 smbstat_srv_info.si_hretime = 852 smbstat_hrtime_delta(prev->ss_snaptime, curr->ss_snaptime); 853 854 smbstat_srv_info.si_etime = smbstat_srv_info.si_hretime / NANOSEC; 855 smbstat_srv_info.si_total_nreqs = 856 smbstat_sub_64(curr->ss_data.ks_nreq, prev->ss_data.ks_nreq); 857 858 if (smbstat_opt_c) 859 smbstat_srv_process_counters(curr); 860 if (smbstat_opt_t) 861 smbstat_srv_process_throughput(curr, prev); 862 if (smbstat_opt_u) 863 smbstat_srv_process_utilization(curr, prev); 864 if (smbstat_opt_r) 865 smbstat_srv_process_requests(curr, prev); 866 } 867 868 /* 869 * smbstat_srv_process_counters 870 */ 871 static void 872 smbstat_srv_process_counters(smbstat_srv_snapshot_t *curr) 873 { 874 smbstat_srv_info.si_nbt_sess = curr->ss_data.ks_nbt_sess; 875 smbstat_srv_info.si_tcp_sess = curr->ss_data.ks_tcp_sess; 876 smbstat_srv_info.si_users = curr->ss_data.ks_users; 877 smbstat_srv_info.si_trees = curr->ss_data.ks_trees; 878 smbstat_srv_info.si_files = curr->ss_data.ks_files; 879 smbstat_srv_info.si_pipes = curr->ss_data.ks_pipes; 880 } 881 882 /* 883 * smbstat_srv_process_throughput 884 * 885 * Processes the data relative to the throughput of the smbsrv module and 886 * stores the results in the structure smbstat_srv_info. 887 */ 888 static void 889 smbstat_srv_process_throughput( 890 smbstat_srv_snapshot_t *curr, 891 smbstat_srv_snapshot_t *prev) 892 { 893 smbstat_srv_info.si_tbs = 894 smbstat_sub_64(curr->ss_data.ks_txb, prev->ss_data.ks_txb); 895 smbstat_srv_info.si_tbs /= smbstat_srv_info.si_etime; 896 smbstat_srv_info.si_rbs = 897 smbstat_sub_64(curr->ss_data.ks_rxb, prev->ss_data.ks_rxb); 898 smbstat_srv_info.si_rbs /= smbstat_srv_info.si_etime; 899 smbstat_srv_info.si_rqs = smbstat_srv_info.si_total_nreqs; 900 smbstat_srv_info.si_rqs /= smbstat_srv_info.si_etime; 901 902 smbstat_srv_info.si_rds = smbstat_sub_64( 903 curr->ss_data.ks_reqs1[SMB_COM_READ].kr_nreq, 904 prev->ss_data.ks_reqs1[SMB_COM_READ].kr_nreq); 905 smbstat_srv_info.si_rds += smbstat_sub_64( 906 curr->ss_data.ks_reqs1[SMB_COM_LOCK_AND_READ].kr_nreq, 907 prev->ss_data.ks_reqs1[SMB_COM_LOCK_AND_READ].kr_nreq); 908 smbstat_srv_info.si_rds += smbstat_sub_64( 909 curr->ss_data.ks_reqs1[SMB_COM_READ_RAW].kr_nreq, 910 prev->ss_data.ks_reqs1[SMB_COM_READ_RAW].kr_nreq); 911 smbstat_srv_info.si_rds += smbstat_sub_64( 912 curr->ss_data.ks_reqs1[SMB_COM_READ_ANDX].kr_nreq, 913 prev->ss_data.ks_reqs1[SMB_COM_READ_ANDX].kr_nreq); 914 smbstat_srv_info.si_rds += smbstat_sub_64( 915 curr->ss_data.ks_reqs2[SMB2_READ].kr_nreq, 916 prev->ss_data.ks_reqs2[SMB2_READ].kr_nreq); 917 smbstat_srv_info.si_rds /= smbstat_srv_info.si_etime; 918 919 smbstat_srv_info.si_wrs = smbstat_sub_64( 920 curr->ss_data.ks_reqs1[SMB_COM_WRITE].kr_nreq, 921 prev->ss_data.ks_reqs1[SMB_COM_WRITE].kr_nreq); 922 smbstat_srv_info.si_wrs += smbstat_sub_64( 923 curr->ss_data.ks_reqs1[SMB_COM_WRITE_AND_UNLOCK].kr_nreq, 924 prev->ss_data.ks_reqs1[SMB_COM_WRITE_AND_UNLOCK].kr_nreq); 925 smbstat_srv_info.si_wrs += smbstat_sub_64( 926 curr->ss_data.ks_reqs1[SMB_COM_WRITE_RAW].kr_nreq, 927 prev->ss_data.ks_reqs1[SMB_COM_WRITE_RAW].kr_nreq); 928 smbstat_srv_info.si_wrs += smbstat_sub_64( 929 curr->ss_data.ks_reqs1[SMB_COM_WRITE_AND_CLOSE].kr_nreq, 930 prev->ss_data.ks_reqs1[SMB_COM_WRITE_AND_CLOSE].kr_nreq); 931 smbstat_srv_info.si_wrs += smbstat_sub_64( 932 curr->ss_data.ks_reqs1[SMB_COM_WRITE_ANDX].kr_nreq, 933 prev->ss_data.ks_reqs1[SMB_COM_WRITE_ANDX].kr_nreq); 934 smbstat_srv_info.si_wrs += smbstat_sub_64( 935 curr->ss_data.ks_reqs2[SMB2_WRITE].kr_nreq, 936 prev->ss_data.ks_reqs2[SMB2_WRITE].kr_nreq); 937 smbstat_srv_info.si_wrs /= smbstat_srv_info.si_etime; 938 } 939 940 /* 941 * smbstat_srv_process_utilization 942 * 943 * Processes the data relative to the utilization of the smbsrv module and 944 * stores the results in the structure smbstat_srv_info. 945 */ 946 static void 947 smbstat_srv_process_utilization( 948 smbstat_srv_snapshot_t *curr, 949 smbstat_srv_snapshot_t *prev) 950 { 951 double tw_delta, tr_delta; 952 double w_delta, r_delta; 953 double tps, rqs; 954 955 w_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_wlentime, 956 curr->ss_data.ks_utilization.ku_wlentime); 957 r_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_rlentime, 958 curr->ss_data.ks_utilization.ku_rlentime); 959 tw_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_wtime, 960 curr->ss_data.ks_utilization.ku_wtime); 961 tr_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_rtime, 962 curr->ss_data.ks_utilization.ku_rtime); 963 rqs = smbstat_srv_info.si_total_nreqs / smbstat_srv_info.si_etime; 964 965 /* Average number of requests waiting */ 966 if (w_delta != 0) 967 smbstat_srv_info.si_avw = w_delta / smbstat_srv_info.si_hretime; 968 else 969 smbstat_srv_info.si_avw = 0.0; 970 971 /* Average number of request running */ 972 if (r_delta != 0) 973 smbstat_srv_info.si_avr = r_delta / smbstat_srv_info.si_hretime; 974 else 975 smbstat_srv_info.si_avr = 0.0; 976 977 /* Utilization */ 978 smbstat_srv_info.si_upct = 979 (smbstat_srv_info.si_avr / curr->ss_data.ks_maxreqs) * 100; 980 981 /* Average wait service time in milliseconds */ 982 smbstat_srv_info.si_rserv = 0.0; 983 smbstat_srv_info.si_wserv = 0.0; 984 if (rqs > 0.0 && 985 (smbstat_srv_info.si_avw != 0.0 || 986 smbstat_srv_info.si_avr != 0.0)) { 987 tps = 1 / rqs; 988 if (smbstat_srv_info.si_avw != 0.0) 989 smbstat_srv_info.si_wserv = 990 smbstat_srv_info.si_avw * tps; 991 if (smbstat_srv_info.si_avr != 0.0) 992 smbstat_srv_info.si_rserv = 993 smbstat_srv_info.si_avr * tps; 994 } 995 996 /* % of time there is a transaction waiting for service */ 997 if (tw_delta != 0) { 998 smbstat_srv_info.si_wpct = tw_delta; 999 smbstat_srv_info.si_wpct /= smbstat_srv_info.si_hretime; 1000 smbstat_srv_info.si_wpct *= 100.0; 1001 } else { 1002 smbstat_srv_info.si_wpct = 0.0; 1003 } 1004 1005 /* % of time there is a transaction running */ 1006 if (tr_delta != 0) { 1007 smbstat_srv_info.si_rpct = tr_delta; 1008 smbstat_srv_info.si_rpct /= smbstat_srv_info.si_hretime; 1009 smbstat_srv_info.si_rpct *= 100.0; 1010 } else { 1011 smbstat_srv_info.si_rpct = 0.0; 1012 } 1013 } 1014 1015 /* 1016 * smbstat_srv_process_requests 1017 * 1018 * Processes the data relative to the SMB requests and stores the results in 1019 * the structure smbstat_srv_info. 1020 */ 1021 static void 1022 smbstat_srv_process_requests( 1023 smbstat_srv_snapshot_t *curr, 1024 smbstat_srv_snapshot_t *prev) 1025 { 1026 smbstat_req_info_t *info; 1027 smb_kstat_req_t *curr_req; 1028 smb_kstat_req_t *prev_req; 1029 int i, idx; 1030 boolean_t firstcall = (prev->ss_snaptime == 0); 1031 1032 for (i = 0; i < SMBSRV_KS_NREQS1; i++) { 1033 info = &smbstat_srv_info.si_reqs1[i]; 1034 idx = info->ri_opcode; 1035 if (idx >= SMBSRV_KS_NREQS1) 1036 continue; 1037 curr_req = &curr->ss_data.ks_reqs1[idx]; 1038 prev_req = &prev->ss_data.ks_reqs1[idx]; 1039 smbstat_srv_process_one_req( 1040 info, curr_req, prev_req, firstcall); 1041 } 1042 1043 for (i = 0; i < SMBSRV_KS_NREQS2; i++) { 1044 info = &smbstat_srv_info.si_reqs2[i]; 1045 idx = info->ri_opcode; 1046 if (idx >= SMBSRV_KS_NREQS2) 1047 continue; 1048 curr_req = &curr->ss_data.ks_reqs2[idx]; 1049 prev_req = &prev->ss_data.ks_reqs2[idx]; 1050 smbstat_srv_process_one_req( 1051 info, curr_req, prev_req, firstcall); 1052 } 1053 } 1054 1055 static void 1056 smbstat_srv_process_one_req( 1057 smbstat_req_info_t *info, 1058 smb_kstat_req_t *curr_req, 1059 smb_kstat_req_t *prev_req, 1060 boolean_t firstcall) 1061 { 1062 double nrqs; 1063 1064 nrqs = smbstat_sub_64(curr_req->kr_nreq, 1065 prev_req->kr_nreq); 1066 1067 info->ri_rqs = nrqs / smbstat_srv_info.si_etime; 1068 1069 info->ri_rbs = smbstat_sub_64( 1070 curr_req->kr_rxb, 1071 prev_req->kr_rxb) / 1072 smbstat_srv_info.si_etime; 1073 1074 info->ri_tbs = smbstat_sub_64( 1075 curr_req->kr_txb, 1076 prev_req->kr_txb) / 1077 smbstat_srv_info.si_etime; 1078 1079 info->ri_pct = nrqs * 100; 1080 if (smbstat_srv_info.si_total_nreqs > 0) 1081 info->ri_pct /= smbstat_srv_info.si_total_nreqs; 1082 1083 if (firstcall) { 1084 /* First time. Take the aggregate */ 1085 info->ri_stddev = 1086 curr_req->kr_a_stddev; 1087 info->ri_mean = curr_req->kr_a_mean; 1088 } else { 1089 /* Take the differential */ 1090 info->ri_stddev = 1091 curr_req->kr_d_stddev; 1092 info->ri_mean = curr_req->kr_d_mean; 1093 } 1094 if (nrqs > 0) { 1095 info->ri_stddev /= nrqs; 1096 info->ri_stddev = sqrt(info->ri_stddev); 1097 } else { 1098 info->ri_stddev = 0; 1099 } 1100 info->ri_stddev /= NANOSEC; 1101 info->ri_mean /= NANOSEC; 1102 } 1103 1104 1105 /* 1106 * smbstat_srv_current_snapshot 1107 * 1108 * Returns the current snapshot. 1109 */ 1110 static smbstat_srv_snapshot_t * 1111 smbstat_srv_current_snapshot(void) 1112 { 1113 return (&smbstat_srv_snapshots[smbstat_snapshot_idx]); 1114 } 1115 1116 /* 1117 * smbstat_srv_previous_snapshot 1118 * 1119 * Returns the previous snapshot. 1120 */ 1121 static smbstat_srv_snapshot_t * 1122 smbstat_srv_previous_snapshot(void) 1123 { 1124 int idx; 1125 1126 idx = (smbstat_snapshot_idx - 1) & SMBSTAT_SNAPSHOT_MASK; 1127 return (&smbstat_srv_snapshots[idx]); 1128 } 1129 1130 /* 1131 * smbstat_usage 1132 * 1133 * Prints out a help message. 1134 */ 1135 static void 1136 smbstat_usage(FILE *fd, int exit_code) 1137 { 1138 (void) fprintf(fd, gettext(SMBSTAT_HELP)); 1139 exit(exit_code); 1140 } 1141 1142 /* 1143 * smbstat_fail 1144 * 1145 * Prints out to stderr an error message and exits the process. 1146 */ 1147 static void 1148 smbstat_fail(int do_perror, char *message, ...) 1149 { 1150 va_list args; 1151 1152 va_start(args, message); 1153 (void) fprintf(stderr, gettext("smbstat: ")); 1154 /* LINTED E_SEC_PRINTF_VAR_FMT */ 1155 (void) vfprintf(stderr, message, args); 1156 va_end(args); 1157 if (do_perror) 1158 (void) fprintf(stderr, ": %s", strerror(errno)); 1159 (void) fprintf(stderr, "\n"); 1160 exit(1); 1161 } 1162 1163 /* 1164 * smbstat_sub_64 1165 * 1166 * Substract 2 uint64_t and returns a double. 1167 */ 1168 static double 1169 smbstat_sub_64(uint64_t a, uint64_t b) 1170 { 1171 return ((double)(a - b)); 1172 } 1173 1174 /* 1175 * smbstat_zero 1176 * 1177 * Returns zero if the value passed in is less than 1. 1178 */ 1179 static double 1180 smbstat_zero(double value) 1181 { 1182 if (value < 1) 1183 value = 0; 1184 return (value); 1185 } 1186 1187 /* 1188 * smbstat_strtoi 1189 * 1190 * Converts a string representing an integer value into its binary value. 1191 * If the conversion fails this routine exits the process. 1192 */ 1193 static uint_t 1194 smbstat_strtoi(char const *val, char *errmsg) 1195 { 1196 char *end; 1197 long tmp; 1198 1199 errno = 0; 1200 tmp = strtol(val, &end, 10); 1201 if (*end != '\0' || errno) 1202 smbstat_fail(1, "%s %s", errmsg, val); 1203 return ((uint_t)tmp); 1204 } 1205 1206 /* 1207 * smbstat_termio_init 1208 * 1209 * Determines the size of the terminal associated with the process. 1210 */ 1211 static void 1212 smbstat_termio_init(void) 1213 { 1214 char *envp; 1215 1216 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &smbstat_ws) != -1) { 1217 if (smbstat_ws.ws_row == 0) { 1218 envp = getenv("LINES"); 1219 if (envp != NULL) 1220 smbstat_ws.ws_row = atoi(envp); 1221 } 1222 1223 if (smbstat_ws.ws_col == 0) { 1224 envp = getenv("COLUMNS"); 1225 if (envp != NULL) 1226 smbstat_ws.ws_row = atoi(envp); 1227 } 1228 } 1229 if (smbstat_ws.ws_col == 0) 1230 smbstat_ws.ws_col = 80; 1231 if (smbstat_ws.ws_row == 0) 1232 smbstat_ws.ws_row = 25; 1233 } 1234 1235 /* 1236 * smbstat_snapshot_idx_inc 1237 * 1238 * Increments the snapshot index. 1239 */ 1240 static void 1241 smbstat_snapshot_inc_idx(void) 1242 { 1243 smbstat_snapshot_idx++; 1244 smbstat_snapshot_idx &= SMBSTAT_SNAPSHOT_MASK; 1245 } 1246 1247 /* 1248 * smbstat_req_cmp_name 1249 * 1250 * Call back function passed to qsort() when the list of requests must be sorted 1251 * by name. 1252 */ 1253 static int 1254 smbstat_req_cmp_name(const void *obj1, const void *obj2) 1255 { 1256 return (strncasecmp( 1257 ((smbstat_req_info_t *)obj1)->ri_name, 1258 ((smbstat_req_info_t *)obj2)->ri_name, 1259 sizeof (((smbstat_req_info_t *)obj2)->ri_name))); 1260 } 1261 1262 /* 1263 * smbstat_req_order 1264 * 1265 * Snapshots the smbsrv module statistics once to get the name of the requests. 1266 * The request list is smbstat_srv_info is then sorted by name or by code 1267 * depending on the boolean smbstat_opt_a. 1268 * The function should be called once during initialization. 1269 */ 1270 static void 1271 smbstat_req_order(void) 1272 { 1273 smbstat_srv_snapshot_t *ss; 1274 smbstat_req_info_t *info; 1275 smb_kstat_req_t *reqs; 1276 int i; 1277 1278 smbstat_srv_snapshot(); 1279 ss = smbstat_srv_current_snapshot(); 1280 1281 reqs = ss->ss_data.ks_reqs1; 1282 info = smbstat_srv_info.si_reqs1; 1283 for (i = 0; i < SMBSRV_KS_NREQS1; i++) { 1284 (void) strlcpy(info[i].ri_name, reqs[i].kr_name, 1285 sizeof (reqs[i].kr_name)); 1286 info[i].ri_opcode = i; 1287 } 1288 if (smbstat_opt_n) 1289 qsort(info, SMBSRV_KS_NREQS1, sizeof (smbstat_req_info_t), 1290 smbstat_req_cmp_name); 1291 1292 reqs = ss->ss_data.ks_reqs2; 1293 info = smbstat_srv_info.si_reqs2; 1294 for (i = 0; i < SMBSRV_KS_NREQS2; i++) { 1295 (void) strlcpy(info[i].ri_name, reqs[i].kr_name, 1296 sizeof (reqs[i].kr_name)); 1297 info[i].ri_opcode = i; 1298 } 1299 if (smbstat_opt_n) 1300 qsort(info, SMBSRV_KS_NREQS2, sizeof (smbstat_req_info_t), 1301 smbstat_req_cmp_name); 1302 } 1303 1304 /* 1305 * Return the number of ticks delta between two hrtime_t 1306 * values. Attempt to cater for various kinds of overflow 1307 * in hrtime_t - no matter how improbable. 1308 */ 1309 static double 1310 smbstat_hrtime_delta(hrtime_t old, hrtime_t new) 1311 { 1312 uint64_t del; 1313 1314 if ((new >= old) && (old >= 0L)) 1315 return ((double)(new - old)); 1316 /* 1317 * We've overflowed the positive portion of an hrtime_t. 1318 */ 1319 if (new < 0L) { 1320 /* 1321 * The new value is negative. Handle the case where the old 1322 * value is positive or negative. 1323 */ 1324 uint64_t n1; 1325 uint64_t o1; 1326 1327 n1 = -new; 1328 if (old > 0L) 1329 return ((double)(n1 - old)); 1330 1331 o1 = -old; 1332 del = n1 - o1; 1333 return ((double)del); 1334 } 1335 1336 /* 1337 * Either we've just gone from being negative to positive *or* the last 1338 * entry was positive and the new entry is also positive but *less* than 1339 * the old entry. This implies we waited quite a few days on a very fast 1340 * system between displays. 1341 */ 1342 if (old < 0L) { 1343 uint64_t o2; 1344 o2 = -old; 1345 del = UINT64_MAX - o2; 1346 } else { 1347 del = UINT64_MAX - old; 1348 } 1349 del += new; 1350 return ((double)del); 1351 } 1352 1353 static void * 1354 smbstat_zalloc(size_t size) 1355 { 1356 void *ptr; 1357 1358 ptr = umem_zalloc(size, UMEM_DEFAULT); 1359 if (ptr == NULL) 1360 smbstat_fail(1, gettext("out of memory")); 1361 return (ptr); 1362 } 1363 1364 static void 1365 smbstat_free(void *ptr, size_t size) 1366 { 1367 umem_free(ptr, size); 1368 } 1369