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 static char *smbstat_cpu_states[CPU_TICKS_SENTINEL] = { 278 "cpu_ticks_idle", 279 "cpu_ticks_user", 280 "cpu_ticks_kernel" 281 }; 282 283 static boolean_t smbstat_opt_a = B_FALSE; /* all */ 284 static boolean_t smbstat_opt_c = B_FALSE; /* counters */ 285 static boolean_t smbstat_opt_n = B_FALSE; /* by name */ 286 static boolean_t smbstat_opt_u = B_FALSE; /* utilization */ 287 static boolean_t smbstat_opt_t = B_FALSE; /* throughput */ 288 static boolean_t smbstat_opt_r = B_FALSE; /* requests */ 289 static boolean_t smbstat_opt_z = B_FALSE; /* non-zero requests */ 290 291 static uint_t smbstat_interval = 0; 292 static long smbstat_nrcpus = 0; 293 static kstat_ctl_t *smbstat_ksc = NULL; 294 static kstat_t *smbstat_srv_ksp = NULL; 295 static kstat_t *smbstat_wrk_ksp = NULL; 296 static struct winsize smbstat_ws; 297 static uint16_t smbstat_rows = 0; 298 299 static int smbstat_snapshot_idx = 0; 300 static smbstat_cpu_snapshot_t *smbstat_cpu_snapshots[SMBSTAT_SNAPSHOT_COUNT]; 301 static smbstat_srv_snapshot_t smbstat_srv_snapshots[SMBSTAT_SNAPSHOT_COUNT]; 302 static smbstat_wrk_snapshot_t smbstat_wrk_snapshots[SMBSTAT_SNAPSHOT_COUNT]; 303 static smbstat_srv_info_t smbstat_srv_info; 304 305 /* 306 * main 307 */ 308 int 309 main(int argc, char *argv[]) 310 { 311 int c; 312 313 (void) setlocale(LC_ALL, ""); 314 (void) textdomain(TEXT_DOMAIN); 315 316 if (is_system_labeled()) { 317 (void) fprintf(stderr, 318 gettext("%s: Trusted Extensions not supported.\n"), 319 argv[0]); 320 return (1); 321 } 322 323 while ((c = getopt(argc, argv, "achnrtuz")) != EOF) { 324 switch (c) { 325 case 'a': 326 smbstat_opt_a = B_TRUE; 327 break; 328 case 'n': 329 smbstat_opt_n = B_TRUE; 330 break; 331 case 'u': 332 smbstat_opt_u = B_TRUE; 333 break; 334 case 'c': 335 smbstat_opt_c = B_TRUE; 336 break; 337 case 'r': 338 smbstat_opt_r = B_TRUE; 339 break; 340 case 't': 341 smbstat_opt_t = B_TRUE; 342 break; 343 case 'z': 344 smbstat_opt_z = B_TRUE; 345 break; 346 case 'h': 347 smbstat_usage(stdout, 0); 348 default: 349 smbstat_usage(stderr, 1); 350 } 351 } 352 353 if (!smbstat_opt_u && 354 !smbstat_opt_c && 355 !smbstat_opt_r && 356 !smbstat_opt_t) { 357 /* Default options when none is specified. */ 358 smbstat_opt_u = B_TRUE; 359 smbstat_opt_t = B_TRUE; 360 } 361 362 if (optind < argc) { 363 smbstat_interval = 364 smbstat_strtoi(argv[optind], "invalid count"); 365 optind++; 366 } 367 368 if ((argc - optind) > 1) 369 smbstat_usage(stderr, 1); 370 371 (void) atexit(smbstat_fini); 372 smbstat_init(); 373 for (;;) { 374 smbstat_kstat_snapshot(); 375 smbstat_kstat_process(); 376 smbstat_kstat_print(); 377 if (smbstat_interval == 0) 378 break; 379 (void) sleep(smbstat_interval); 380 smbstat_snapshot_inc_idx(); 381 } 382 return (0); 383 } 384 385 /* 386 * smbstat_init 387 * 388 * Global initialization. 389 */ 390 static void 391 smbstat_init(void) 392 { 393 if ((smbstat_ksc = kstat_open()) == NULL) 394 smbstat_fail(1, gettext("kstat_open(): can't open /dev/kstat")); 395 396 smbstat_cpu_init(); 397 smbstat_srv_init(); 398 smbstat_wrk_init(); 399 smbstat_req_order(); 400 } 401 402 /* 403 * smbstat_fini 404 * 405 * Releases the resources smbstat_init() allocated. 406 */ 407 static void 408 smbstat_fini(void) 409 { 410 smbstat_wrk_fini(); 411 smbstat_srv_fini(); 412 smbstat_cpu_fini(); 413 (void) kstat_close(smbstat_ksc); 414 } 415 416 /* 417 * smbstat_kstat_snapshot 418 * 419 * Takes a snapshot of the data. 420 */ 421 static void 422 smbstat_kstat_snapshot(void) 423 { 424 smbstat_cpu_snapshot(); 425 smbstat_srv_snapshot(); 426 smbstat_wrk_snapshot(); 427 } 428 429 /* 430 * smbstat_kstat_process 431 */ 432 static void 433 smbstat_kstat_process(void) 434 { 435 smbstat_cpu_process(); 436 smbstat_srv_process(); 437 smbstat_wrk_process(); 438 } 439 440 /* 441 * smbstat_kstat_print 442 * 443 * Print the data processed. 444 */ 445 static void 446 smbstat_kstat_print(void) 447 { 448 smbstat_termio_init(); 449 smbstat_print_counters(); 450 smbstat_print_throughput(); 451 smbstat_print_utilization(); 452 smbstat_print_requests(); 453 (void) fflush(stdout); 454 } 455 456 /* 457 * smbstat_print_counters 458 * 459 * Displays the SMB server counters (session, users...). 460 */ 461 static void 462 smbstat_print_counters(void) 463 { 464 if (!smbstat_opt_c) 465 return; 466 467 if (smbstat_opt_u || smbstat_opt_r || smbstat_opt_t || 468 (smbstat_rows == 0) || (smbstat_rows >= smbstat_ws.ws_row)) { 469 (void) printf(SMBSRV_COUNTERS_BANNER); 470 smbstat_rows = 1; 471 } 472 473 (void) printf(SMBSRV_COUNTERS_FORMAT, 474 smbstat_srv_info.si_nbt_sess, 475 smbstat_srv_info.si_tcp_sess, 476 smbstat_srv_info.si_users, 477 smbstat_srv_info.si_trees, 478 smbstat_srv_info.si_files, 479 smbstat_srv_info.si_pipes); 480 481 ++smbstat_rows; 482 } 483 /* 484 * smbstat_print_throughput 485 * 486 * Formats the SMB server throughput output. 487 */ 488 static void 489 smbstat_print_throughput(void) 490 { 491 if (!smbstat_opt_t) 492 return; 493 494 if (smbstat_opt_u || smbstat_opt_r || smbstat_opt_c || 495 (smbstat_rows == 0) || (smbstat_rows >= smbstat_ws.ws_row)) { 496 (void) printf(SMBSRV_THROUGHPUT_BANNER); 497 smbstat_rows = 1; 498 } 499 (void) printf(SMBSRV_THROUGHPUT_FORMAT, 500 smbstat_zero(smbstat_srv_info.si_rbs), 501 smbstat_zero(smbstat_srv_info.si_tbs), 502 smbstat_zero(smbstat_srv_info.si_rqs), 503 smbstat_zero(smbstat_srv_info.si_rds), 504 smbstat_zero(smbstat_srv_info.si_wrs)); 505 506 ++smbstat_rows; 507 } 508 509 /* 510 * smbstat_print_utilization 511 */ 512 static void 513 smbstat_print_utilization(void) 514 { 515 char *sat; 516 if (!smbstat_opt_u) 517 return; 518 519 if (smbstat_opt_t || smbstat_opt_r || smbstat_opt_c || 520 (smbstat_rows == 0) || (smbstat_rows >= smbstat_ws.ws_row)) { 521 (void) printf(SMBSRV_UTILIZATION_BANNER); 522 smbstat_rows = 1; 523 } 524 525 if (smbstat_srv_info.si_sat) 526 sat = "yes"; 527 else 528 sat = "no "; 529 530 (void) printf(SMBSRV_UTILIZATION_FORMAT, 531 smbstat_srv_info.si_avw, 532 smbstat_srv_info.si_avr, 533 smbstat_srv_info.si_wserv, 534 smbstat_srv_info.si_rserv, 535 smbstat_zero(smbstat_srv_info.si_wpct), 536 smbstat_zero(smbstat_srv_info.si_rpct), 537 smbstat_zero(smbstat_srv_info.si_upct), 538 sat, 539 smbstat_srv_info.si_ticks[CPU_TICKS_USER], 540 smbstat_srv_info.si_ticks[CPU_TICKS_KERNEL], 541 smbstat_srv_info.si_ticks[CPU_TICKS_IDLE]); 542 543 ++smbstat_rows; 544 } 545 546 /* 547 * smbstat_print_requests 548 */ 549 static void 550 smbstat_print_requests(void) 551 { 552 smbstat_req_info_t *prq; 553 int i; 554 555 if (!smbstat_opt_r) 556 return; 557 558 (void) printf(SMBSRV_REQUESTS_BANNER, " "); 559 560 prq = smbstat_srv_info.si_reqs1; 561 for (i = 0; i < SMBSRV_KS_NREQS1; i++) { 562 if (!smbstat_opt_a && 563 strncmp(prq[i].ri_name, "Invalid", sizeof ("Invalid")) == 0) 564 continue; 565 566 if (!smbstat_opt_z || (prq[i].ri_pct != 0)) { 567 (void) printf(SMBSRV_REQUESTS_FORMAT, 568 prq[i].ri_name, 569 prq[i].ri_opcode, 570 smbstat_zero(prq[i].ri_pct), 571 smbstat_zero(prq[i].ri_rbs), 572 smbstat_zero(prq[i].ri_tbs), 573 smbstat_zero(prq[i].ri_rqs), 574 prq[i].ri_mean, 575 prq[i].ri_stddev); 576 } 577 } 578 579 prq = smbstat_srv_info.si_reqs2; 580 for (i = 0; i < SMBSRV_KS_NREQS2; i++) { 581 if (!smbstat_opt_a && i == SMB2_INVALID_CMD) 582 continue; 583 584 if (!smbstat_opt_z || (prq[i].ri_pct != 0)) { 585 (void) printf(SMBSRV_REQUESTS_FORMAT, 586 prq[i].ri_name, 587 prq[i].ri_opcode, 588 smbstat_zero(prq[i].ri_pct), 589 smbstat_zero(prq[i].ri_rbs), 590 smbstat_zero(prq[i].ri_tbs), 591 smbstat_zero(prq[i].ri_rqs), 592 prq[i].ri_mean, 593 prq[i].ri_stddev); 594 } 595 } 596 } 597 598 /* 599 * smbstat_cpu_init 600 */ 601 static void 602 smbstat_cpu_init(void) 603 { 604 size_t size; 605 int i; 606 607 smbstat_nrcpus = sysconf(_SC_CPUID_MAX) + 1; 608 size = smbstat_nrcpus * sizeof (smbstat_cpu_snapshot_t); 609 610 for (i = 0; i < SMBSTAT_SNAPSHOT_COUNT; i++) 611 smbstat_cpu_snapshots[i] = smbstat_zalloc(size); 612 } 613 614 /* 615 * smbstat_cpu_fini 616 */ 617 static void 618 smbstat_cpu_fini(void) 619 { 620 size_t size; 621 int i; 622 623 size = smbstat_nrcpus * sizeof (smbstat_cpu_snapshot_t); 624 625 for (i = 0; i < SMBSTAT_SNAPSHOT_COUNT; i++) 626 smbstat_free(smbstat_cpu_snapshots[i], size); 627 } 628 629 /* 630 * smbstat_cpu_current_snapshot 631 */ 632 static smbstat_cpu_snapshot_t * 633 smbstat_cpu_current_snapshot(void) 634 { 635 return (smbstat_cpu_snapshots[smbstat_snapshot_idx]); 636 } 637 638 /* 639 * smbstat_cpu_previous_snapshot 640 */ 641 static smbstat_cpu_snapshot_t * 642 smbstat_cpu_previous_snapshot(void) 643 { 644 int idx; 645 646 idx = (smbstat_snapshot_idx - 1) & SMBSTAT_SNAPSHOT_MASK; 647 return (smbstat_cpu_snapshots[idx]); 648 } 649 650 /* 651 * smbstat_cpu_snapshot 652 */ 653 static void 654 smbstat_cpu_snapshot(void) 655 { 656 kstat_t *ksp; 657 kstat_named_t *ksn; 658 smbstat_cpu_snapshot_t *curr; 659 long i; 660 int j; 661 662 curr = smbstat_cpu_current_snapshot(); 663 664 for (i = 0; i < smbstat_nrcpus; i++, curr++) { 665 curr->cs_id = SMBSTAT_ID_NO_CPU; 666 curr->cs_state = p_online(i, P_STATUS); 667 /* If no valid CPU is present, move on to the next one */ 668 if (curr->cs_state != P_ONLINE && curr->cs_state != P_NOINTR) 669 continue; 670 671 curr->cs_id = i; 672 673 ksp = kstat_lookup(smbstat_ksc, "cpu", i, "sys"); 674 if (ksp == NULL) 675 smbstat_fail(1, 676 gettext("kstat_lookup('cpu sys %d') failed"), i); 677 678 if (kstat_read(smbstat_ksc, ksp, NULL) == -1) 679 smbstat_fail(1, 680 gettext("kstat_read('cpu sys %d') failed"), i); 681 682 for (j = 0; j < CPU_TICKS_SENTINEL; j++) { 683 ksn = kstat_data_lookup(ksp, smbstat_cpu_states[j]); 684 if (ksn == NULL) 685 smbstat_fail(1, 686 gettext("kstat_data_lookup('%s') failed"), 687 smbstat_cpu_states[j]); 688 curr->cs_ticks[j] = ksn->value.ui64; 689 } 690 } 691 } 692 693 /* 694 * smbstat_cpu_process 695 */ 696 static void 697 smbstat_cpu_process(void) 698 { 699 smbstat_cpu_snapshot_t *curr, *prev; 700 double total_ticks; 701 double agg_ticks[CPU_TICKS_SENTINEL]; 702 int i, j; 703 704 curr = smbstat_cpu_current_snapshot(); 705 prev = smbstat_cpu_previous_snapshot(); 706 bzero(agg_ticks, sizeof (agg_ticks)); 707 total_ticks = 0; 708 709 for (i = 0; i < smbstat_nrcpus; i++, curr++, prev++) { 710 for (j = 0; j < CPU_TICKS_SENTINEL; j++) { 711 agg_ticks[j] += smbstat_sub_64(curr->cs_ticks[j], 712 prev->cs_ticks[j]); 713 total_ticks += smbstat_sub_64(curr->cs_ticks[j], 714 prev->cs_ticks[j]); 715 } 716 } 717 718 for (j = 0; j < CPU_TICKS_SENTINEL; j++) 719 smbstat_srv_info.si_ticks[j] = 720 (agg_ticks[j] * 100.0) / total_ticks; 721 } 722 723 /* 724 * smbstat_wrk_init 725 */ 726 static void 727 smbstat_wrk_init(void) 728 { 729 smbstat_wrk_ksp = 730 kstat_lookup(smbstat_ksc, "unix", -1, SMBSRV_KSTAT_WORKERS); 731 if (smbstat_wrk_ksp == NULL) 732 smbstat_fail(1, 733 gettext("cannot retrieve smbsrv workers kstat\n")); 734 } 735 736 static void 737 smbstat_wrk_fini(void) 738 { 739 smbstat_wrk_ksp = NULL; 740 } 741 742 /* 743 * smbstat_wrk_snapshot 744 */ 745 static void 746 smbstat_wrk_snapshot(void) 747 { 748 smbstat_wrk_snapshot_t *curr; 749 kstat_named_t *kn; 750 751 curr = smbstat_wrk_current_snapshot(); 752 753 if (kstat_read(smbstat_ksc, smbstat_wrk_ksp, NULL) == -1) 754 smbstat_fail(1, gettext("kstat_read('%s') failed"), 755 smbstat_wrk_ksp->ks_name); 756 757 kn = kstat_data_lookup(smbstat_wrk_ksp, "nbacklog"); 758 if ((kn == NULL) || (kn->data_type != KSTAT_DATA_UINT64)) 759 smbstat_fail(1, gettext("kstat_read('%s') failed"), 760 "nbacklog"); 761 curr->ws_nbacklog = kn->value.ui64; 762 } 763 764 /* 765 * smbstat_wrk_process 766 */ 767 static void 768 smbstat_wrk_process(void) 769 { 770 smbstat_wrk_snapshot_t *curr; 771 772 curr = smbstat_wrk_current_snapshot(); 773 774 if (curr->ws_nbacklog != 0) 775 smbstat_srv_info.si_sat = B_TRUE; 776 else 777 smbstat_srv_info.si_sat = B_FALSE; 778 } 779 780 /* 781 * smbstat_wrk_current_snapshot 782 */ 783 static smbstat_wrk_snapshot_t * 784 smbstat_wrk_current_snapshot(void) 785 { 786 return (&smbstat_wrk_snapshots[smbstat_snapshot_idx]); 787 } 788 789 /* 790 * smbstat_srv_init 791 */ 792 static void 793 smbstat_srv_init(void) 794 { 795 smbstat_srv_ksp = kstat_lookup(smbstat_ksc, SMBSRV_KSTAT_MODULE, 796 getzoneid(), SMBSRV_KSTAT_STATISTICS); 797 if (smbstat_srv_ksp == NULL) 798 smbstat_fail(1, gettext("cannot retrieve smbsrv kstat\n")); 799 } 800 801 /* 802 * smbstat_srv_fini 803 */ 804 static void 805 smbstat_srv_fini(void) 806 { 807 smbstat_srv_ksp = NULL; 808 } 809 810 /* 811 * smbstat_srv_snapshot 812 * 813 * Take a snapshot of the smbsrv module statistics. 814 */ 815 static void 816 smbstat_srv_snapshot(void) 817 { 818 smbstat_srv_snapshot_t *curr; 819 820 curr = smbstat_srv_current_snapshot(); 821 822 if ((kstat_read(smbstat_ksc, smbstat_srv_ksp, NULL) == -1) || 823 (smbstat_srv_ksp->ks_data_size != sizeof (curr->ss_data))) 824 smbstat_fail(1, gettext("kstat_read('%s') failed"), 825 smbstat_srv_ksp->ks_name); 826 827 curr->ss_snaptime = smbstat_srv_ksp->ks_snaptime; 828 bcopy(smbstat_srv_ksp->ks_data, &curr->ss_data, sizeof (curr->ss_data)); 829 } 830 831 /* 832 * smbstat_srv_process 833 * 834 * Processes the snapshot data. 835 */ 836 static void 837 smbstat_srv_process(void) 838 { 839 smbstat_srv_snapshot_t *curr, *prev; 840 841 curr = smbstat_srv_current_snapshot(); 842 prev = smbstat_srv_previous_snapshot(); 843 844 if (prev->ss_snaptime == 0) 845 smbstat_srv_info.si_hretime = 846 smbstat_hrtime_delta(curr->ss_data.ks_start_time, 847 curr->ss_snaptime); 848 else 849 smbstat_srv_info.si_hretime = 850 smbstat_hrtime_delta(prev->ss_snaptime, curr->ss_snaptime); 851 852 smbstat_srv_info.si_etime = smbstat_srv_info.si_hretime / NANOSEC; 853 smbstat_srv_info.si_total_nreqs = 854 smbstat_sub_64(curr->ss_data.ks_nreq, prev->ss_data.ks_nreq); 855 856 if (smbstat_opt_c) 857 smbstat_srv_process_counters(curr); 858 if (smbstat_opt_t) 859 smbstat_srv_process_throughput(curr, prev); 860 if (smbstat_opt_u) 861 smbstat_srv_process_utilization(curr, prev); 862 if (smbstat_opt_r) 863 smbstat_srv_process_requests(curr, prev); 864 } 865 866 /* 867 * smbstat_srv_process_counters 868 */ 869 static void 870 smbstat_srv_process_counters(smbstat_srv_snapshot_t *curr) 871 { 872 smbstat_srv_info.si_nbt_sess = curr->ss_data.ks_nbt_sess; 873 smbstat_srv_info.si_tcp_sess = curr->ss_data.ks_tcp_sess; 874 smbstat_srv_info.si_users = curr->ss_data.ks_users; 875 smbstat_srv_info.si_trees = curr->ss_data.ks_trees; 876 smbstat_srv_info.si_files = curr->ss_data.ks_files; 877 smbstat_srv_info.si_pipes = curr->ss_data.ks_pipes; 878 } 879 880 /* 881 * smbstat_srv_process_throughput 882 * 883 * Processes the data relative to the throughput of the smbsrv module and 884 * stores the results in the structure smbstat_srv_info. 885 */ 886 static void 887 smbstat_srv_process_throughput( 888 smbstat_srv_snapshot_t *curr, 889 smbstat_srv_snapshot_t *prev) 890 { 891 smbstat_srv_info.si_tbs = 892 smbstat_sub_64(curr->ss_data.ks_txb, prev->ss_data.ks_txb); 893 smbstat_srv_info.si_tbs /= smbstat_srv_info.si_etime; 894 smbstat_srv_info.si_rbs = 895 smbstat_sub_64(curr->ss_data.ks_rxb, prev->ss_data.ks_rxb); 896 smbstat_srv_info.si_rbs /= smbstat_srv_info.si_etime; 897 smbstat_srv_info.si_rqs = smbstat_srv_info.si_total_nreqs; 898 smbstat_srv_info.si_rqs /= smbstat_srv_info.si_etime; 899 900 smbstat_srv_info.si_rds = smbstat_sub_64( 901 curr->ss_data.ks_reqs1[SMB_COM_READ].kr_nreq, 902 prev->ss_data.ks_reqs1[SMB_COM_READ].kr_nreq); 903 smbstat_srv_info.si_rds += smbstat_sub_64( 904 curr->ss_data.ks_reqs1[SMB_COM_LOCK_AND_READ].kr_nreq, 905 prev->ss_data.ks_reqs1[SMB_COM_LOCK_AND_READ].kr_nreq); 906 smbstat_srv_info.si_rds += smbstat_sub_64( 907 curr->ss_data.ks_reqs1[SMB_COM_READ_RAW].kr_nreq, 908 prev->ss_data.ks_reqs1[SMB_COM_READ_RAW].kr_nreq); 909 smbstat_srv_info.si_rds += smbstat_sub_64( 910 curr->ss_data.ks_reqs1[SMB_COM_READ_ANDX].kr_nreq, 911 prev->ss_data.ks_reqs1[SMB_COM_READ_ANDX].kr_nreq); 912 smbstat_srv_info.si_rds += smbstat_sub_64( 913 curr->ss_data.ks_reqs2[SMB2_READ].kr_nreq, 914 prev->ss_data.ks_reqs2[SMB2_READ].kr_nreq); 915 smbstat_srv_info.si_rds /= smbstat_srv_info.si_etime; 916 917 smbstat_srv_info.si_wrs = smbstat_sub_64( 918 curr->ss_data.ks_reqs1[SMB_COM_WRITE].kr_nreq, 919 prev->ss_data.ks_reqs1[SMB_COM_WRITE].kr_nreq); 920 smbstat_srv_info.si_wrs += smbstat_sub_64( 921 curr->ss_data.ks_reqs1[SMB_COM_WRITE_AND_UNLOCK].kr_nreq, 922 prev->ss_data.ks_reqs1[SMB_COM_WRITE_AND_UNLOCK].kr_nreq); 923 smbstat_srv_info.si_wrs += smbstat_sub_64( 924 curr->ss_data.ks_reqs1[SMB_COM_WRITE_RAW].kr_nreq, 925 prev->ss_data.ks_reqs1[SMB_COM_WRITE_RAW].kr_nreq); 926 smbstat_srv_info.si_wrs += smbstat_sub_64( 927 curr->ss_data.ks_reqs1[SMB_COM_WRITE_AND_CLOSE].kr_nreq, 928 prev->ss_data.ks_reqs1[SMB_COM_WRITE_AND_CLOSE].kr_nreq); 929 smbstat_srv_info.si_wrs += smbstat_sub_64( 930 curr->ss_data.ks_reqs1[SMB_COM_WRITE_ANDX].kr_nreq, 931 prev->ss_data.ks_reqs1[SMB_COM_WRITE_ANDX].kr_nreq); 932 smbstat_srv_info.si_wrs += smbstat_sub_64( 933 curr->ss_data.ks_reqs2[SMB2_WRITE].kr_nreq, 934 prev->ss_data.ks_reqs2[SMB2_WRITE].kr_nreq); 935 smbstat_srv_info.si_wrs /= smbstat_srv_info.si_etime; 936 } 937 938 /* 939 * smbstat_srv_process_utilization 940 * 941 * Processes the data relative to the utilization of the smbsrv module and 942 * stores the results in the structure smbstat_srv_info. 943 */ 944 static void 945 smbstat_srv_process_utilization( 946 smbstat_srv_snapshot_t *curr, 947 smbstat_srv_snapshot_t *prev) 948 { 949 double tw_delta, tr_delta; 950 double w_delta, r_delta; 951 double tps, rqs; 952 953 w_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_wlentime, 954 curr->ss_data.ks_utilization.ku_wlentime); 955 r_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_rlentime, 956 curr->ss_data.ks_utilization.ku_rlentime); 957 tw_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_wtime, 958 curr->ss_data.ks_utilization.ku_wtime); 959 tr_delta = smbstat_hrtime_delta(prev->ss_data.ks_utilization.ku_rtime, 960 curr->ss_data.ks_utilization.ku_rtime); 961 rqs = smbstat_srv_info.si_total_nreqs / smbstat_srv_info.si_etime; 962 963 /* Average number of requests waiting */ 964 if (w_delta != 0) 965 smbstat_srv_info.si_avw = w_delta / smbstat_srv_info.si_hretime; 966 else 967 smbstat_srv_info.si_avw = 0.0; 968 969 /* Average number of request running */ 970 if (r_delta != 0) 971 smbstat_srv_info.si_avr = r_delta / smbstat_srv_info.si_hretime; 972 else 973 smbstat_srv_info.si_avr = 0.0; 974 975 /* Utilization */ 976 smbstat_srv_info.si_upct = 977 (smbstat_srv_info.si_avr / curr->ss_data.ks_maxreqs) * 100; 978 979 /* Average wait service time in milliseconds */ 980 smbstat_srv_info.si_rserv = 0.0; 981 smbstat_srv_info.si_wserv = 0.0; 982 if (rqs > 0.0 && 983 (smbstat_srv_info.si_avw != 0.0 || 984 smbstat_srv_info.si_avr != 0.0)) { 985 tps = 1 / rqs; 986 if (smbstat_srv_info.si_avw != 0.0) 987 smbstat_srv_info.si_wserv = 988 smbstat_srv_info.si_avw * tps; 989 if (smbstat_srv_info.si_avr != 0.0) 990 smbstat_srv_info.si_rserv = 991 smbstat_srv_info.si_avr * tps; 992 } 993 994 /* % of time there is a transaction waiting for service */ 995 if (tw_delta != 0) { 996 smbstat_srv_info.si_wpct = tw_delta; 997 smbstat_srv_info.si_wpct /= smbstat_srv_info.si_hretime; 998 smbstat_srv_info.si_wpct *= 100.0; 999 } else { 1000 smbstat_srv_info.si_wpct = 0.0; 1001 } 1002 1003 /* % of time there is a transaction running */ 1004 if (tr_delta != 0) { 1005 smbstat_srv_info.si_rpct = tr_delta; 1006 smbstat_srv_info.si_rpct /= smbstat_srv_info.si_hretime; 1007 smbstat_srv_info.si_rpct *= 100.0; 1008 } else { 1009 smbstat_srv_info.si_rpct = 0.0; 1010 } 1011 } 1012 1013 /* 1014 * smbstat_srv_process_requests 1015 * 1016 * Processes the data relative to the SMB requests and stores the results in 1017 * the structure smbstat_srv_info. 1018 */ 1019 static void 1020 smbstat_srv_process_requests( 1021 smbstat_srv_snapshot_t *curr, 1022 smbstat_srv_snapshot_t *prev) 1023 { 1024 smbstat_req_info_t *info; 1025 smb_kstat_req_t *curr_req; 1026 smb_kstat_req_t *prev_req; 1027 int i, idx; 1028 boolean_t firstcall = (prev->ss_snaptime == 0); 1029 1030 for (i = 0; i < SMBSRV_KS_NREQS1; i++) { 1031 info = &smbstat_srv_info.si_reqs1[i]; 1032 idx = info->ri_opcode; 1033 if (idx >= SMBSRV_KS_NREQS1) 1034 continue; 1035 curr_req = &curr->ss_data.ks_reqs1[idx]; 1036 prev_req = &prev->ss_data.ks_reqs1[idx]; 1037 smbstat_srv_process_one_req( 1038 info, curr_req, prev_req, firstcall); 1039 } 1040 1041 for (i = 0; i < SMBSRV_KS_NREQS2; i++) { 1042 info = &smbstat_srv_info.si_reqs2[i]; 1043 idx = info->ri_opcode; 1044 if (idx >= SMBSRV_KS_NREQS2) 1045 continue; 1046 curr_req = &curr->ss_data.ks_reqs2[idx]; 1047 prev_req = &prev->ss_data.ks_reqs2[idx]; 1048 smbstat_srv_process_one_req( 1049 info, curr_req, prev_req, firstcall); 1050 } 1051 } 1052 1053 static void 1054 smbstat_srv_process_one_req( 1055 smbstat_req_info_t *info, 1056 smb_kstat_req_t *curr_req, 1057 smb_kstat_req_t *prev_req, 1058 boolean_t firstcall) 1059 { 1060 double nrqs; 1061 1062 nrqs = smbstat_sub_64(curr_req->kr_nreq, 1063 prev_req->kr_nreq); 1064 1065 info->ri_rqs = nrqs / smbstat_srv_info.si_etime; 1066 1067 info->ri_rbs = smbstat_sub_64( 1068 curr_req->kr_rxb, 1069 prev_req->kr_rxb) / 1070 smbstat_srv_info.si_etime; 1071 1072 info->ri_tbs = smbstat_sub_64( 1073 curr_req->kr_txb, 1074 prev_req->kr_txb) / 1075 smbstat_srv_info.si_etime; 1076 1077 info->ri_pct = nrqs * 100; 1078 if (smbstat_srv_info.si_total_nreqs > 0) 1079 info->ri_pct /= smbstat_srv_info.si_total_nreqs; 1080 1081 if (firstcall) { 1082 /* First time. Take the aggregate */ 1083 info->ri_stddev = 1084 curr_req->kr_a_stddev; 1085 info->ri_mean = curr_req->kr_a_mean; 1086 } else { 1087 /* Take the differential */ 1088 info->ri_stddev = 1089 curr_req->kr_d_stddev; 1090 info->ri_mean = curr_req->kr_d_mean; 1091 } 1092 if (nrqs > 0) { 1093 info->ri_stddev /= nrqs; 1094 info->ri_stddev = sqrt(info->ri_stddev); 1095 } else { 1096 info->ri_stddev = 0; 1097 } 1098 info->ri_stddev /= NANOSEC; 1099 info->ri_mean /= NANOSEC; 1100 } 1101 1102 1103 /* 1104 * smbstat_srv_current_snapshot 1105 * 1106 * Returns the current snapshot. 1107 */ 1108 static smbstat_srv_snapshot_t * 1109 smbstat_srv_current_snapshot(void) 1110 { 1111 return (&smbstat_srv_snapshots[smbstat_snapshot_idx]); 1112 } 1113 1114 /* 1115 * smbstat_srv_previous_snapshot 1116 * 1117 * Returns the previous snapshot. 1118 */ 1119 static smbstat_srv_snapshot_t * 1120 smbstat_srv_previous_snapshot(void) 1121 { 1122 int idx; 1123 1124 idx = (smbstat_snapshot_idx - 1) & SMBSTAT_SNAPSHOT_MASK; 1125 return (&smbstat_srv_snapshots[idx]); 1126 } 1127 1128 /* 1129 * smbstat_usage 1130 * 1131 * Prints out a help message. 1132 */ 1133 static void 1134 smbstat_usage(FILE *fd, int exit_code) 1135 { 1136 (void) fprintf(fd, gettext(SMBSTAT_HELP)); 1137 exit(exit_code); 1138 } 1139 1140 /* 1141 * smbstat_fail 1142 * 1143 * Prints out to stderr an error message and exits the process. 1144 */ 1145 static void 1146 smbstat_fail(int do_perror, char *message, ...) 1147 { 1148 va_list args; 1149 1150 va_start(args, message); 1151 (void) fprintf(stderr, gettext("smbstat: ")); 1152 /* LINTED E_SEC_PRINTF_VAR_FMT */ 1153 (void) vfprintf(stderr, message, args); 1154 va_end(args); 1155 if (do_perror) 1156 (void) fprintf(stderr, ": %s", strerror(errno)); 1157 (void) fprintf(stderr, "\n"); 1158 exit(1); 1159 } 1160 1161 /* 1162 * smbstat_sub_64 1163 * 1164 * Substract 2 uint64_t and returns a double. 1165 */ 1166 static double 1167 smbstat_sub_64(uint64_t a, uint64_t b) 1168 { 1169 return ((double)(a - b)); 1170 } 1171 1172 /* 1173 * smbstat_zero 1174 * 1175 * Returns zero if the value passed in is less than 1. 1176 */ 1177 static double 1178 smbstat_zero(double value) 1179 { 1180 if (value < 1) 1181 value = 0; 1182 return (value); 1183 } 1184 1185 /* 1186 * smbstat_strtoi 1187 * 1188 * Converts a string representing an integer value into its binary value. 1189 * If the conversion fails this routine exits the process. 1190 */ 1191 static uint_t 1192 smbstat_strtoi(char const *val, char *errmsg) 1193 { 1194 char *end; 1195 long tmp; 1196 1197 errno = 0; 1198 tmp = strtol(val, &end, 10); 1199 if (*end != '\0' || errno) 1200 smbstat_fail(1, "%s %s", errmsg, val); 1201 return ((uint_t)tmp); 1202 } 1203 1204 /* 1205 * smbstat_termio_init 1206 * 1207 * Determines the size of the terminal associated with the process. 1208 */ 1209 static void 1210 smbstat_termio_init(void) 1211 { 1212 char *envp; 1213 1214 if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &smbstat_ws) != -1) { 1215 if (smbstat_ws.ws_row == 0) { 1216 envp = getenv("LINES"); 1217 if (envp != NULL) 1218 smbstat_ws.ws_row = atoi(envp); 1219 } 1220 1221 if (smbstat_ws.ws_col == 0) { 1222 envp = getenv("COLUMNS"); 1223 if (envp != NULL) 1224 smbstat_ws.ws_row = atoi(envp); 1225 } 1226 } 1227 if (smbstat_ws.ws_col == 0) 1228 smbstat_ws.ws_col = 80; 1229 if (smbstat_ws.ws_row == 0) 1230 smbstat_ws.ws_row = 25; 1231 } 1232 1233 /* 1234 * smbstat_snapshot_idx_inc 1235 * 1236 * Increments the snapshot index. 1237 */ 1238 static void 1239 smbstat_snapshot_inc_idx(void) 1240 { 1241 smbstat_snapshot_idx++; 1242 smbstat_snapshot_idx &= SMBSTAT_SNAPSHOT_MASK; 1243 } 1244 1245 /* 1246 * smbstat_req_cmp_name 1247 * 1248 * Call back function passed to qsort() when the list of requests must be sorted 1249 * by name. 1250 */ 1251 static int 1252 smbstat_req_cmp_name(const void *obj1, const void *obj2) 1253 { 1254 return (strncasecmp( 1255 ((smbstat_req_info_t *)obj1)->ri_name, 1256 ((smbstat_req_info_t *)obj2)->ri_name, 1257 sizeof (((smbstat_req_info_t *)obj2)->ri_name))); 1258 } 1259 1260 /* 1261 * smbstat_req_order 1262 * 1263 * Snapshots the smbsrv module statistics once to get the name of the requests. 1264 * The request list is smbstat_srv_info is then sorted by name or by code 1265 * depending on the boolean smbstat_opt_a. 1266 * The function should be called once during initialization. 1267 */ 1268 static void 1269 smbstat_req_order(void) 1270 { 1271 smbstat_srv_snapshot_t *ss; 1272 smbstat_req_info_t *info; 1273 smb_kstat_req_t *reqs; 1274 int i; 1275 1276 smbstat_srv_snapshot(); 1277 ss = smbstat_srv_current_snapshot(); 1278 1279 reqs = ss->ss_data.ks_reqs1; 1280 info = smbstat_srv_info.si_reqs1; 1281 for (i = 0; i < SMBSRV_KS_NREQS1; i++) { 1282 (void) strlcpy(info[i].ri_name, reqs[i].kr_name, 1283 sizeof (reqs[i].kr_name)); 1284 info[i].ri_opcode = i; 1285 } 1286 if (smbstat_opt_n) 1287 qsort(info, SMBSRV_KS_NREQS1, sizeof (smbstat_req_info_t), 1288 smbstat_req_cmp_name); 1289 1290 reqs = ss->ss_data.ks_reqs2; 1291 info = smbstat_srv_info.si_reqs2; 1292 for (i = 0; i < SMBSRV_KS_NREQS2; i++) { 1293 (void) strlcpy(info[i].ri_name, reqs[i].kr_name, 1294 sizeof (reqs[i].kr_name)); 1295 info[i].ri_opcode = i; 1296 } 1297 if (smbstat_opt_n) 1298 qsort(info, SMBSRV_KS_NREQS2, sizeof (smbstat_req_info_t), 1299 smbstat_req_cmp_name); 1300 } 1301 1302 /* 1303 * Return the number of ticks delta between two hrtime_t 1304 * values. Attempt to cater for various kinds of overflow 1305 * in hrtime_t - no matter how improbable. 1306 */ 1307 static double 1308 smbstat_hrtime_delta(hrtime_t old, hrtime_t new) 1309 { 1310 uint64_t del; 1311 1312 if ((new >= old) && (old >= 0L)) 1313 return ((double)(new - old)); 1314 /* 1315 * We've overflowed the positive portion of an hrtime_t. 1316 */ 1317 if (new < 0L) { 1318 /* 1319 * The new value is negative. Handle the case where the old 1320 * value is positive or negative. 1321 */ 1322 uint64_t n1; 1323 uint64_t o1; 1324 1325 n1 = -new; 1326 if (old > 0L) 1327 return ((double)(n1 - old)); 1328 1329 o1 = -old; 1330 del = n1 - o1; 1331 return ((double)del); 1332 } 1333 1334 /* 1335 * Either we've just gone from being negative to positive *or* the last 1336 * entry was positive and the new entry is also positive but *less* than 1337 * the old entry. This implies we waited quite a few days on a very fast 1338 * system between displays. 1339 */ 1340 if (old < 0L) { 1341 uint64_t o2; 1342 o2 = -old; 1343 del = UINT64_MAX - o2; 1344 } else { 1345 del = UINT64_MAX - old; 1346 } 1347 del += new; 1348 return ((double)del); 1349 } 1350 1351 static void * 1352 smbstat_zalloc(size_t size) 1353 { 1354 void *ptr; 1355 1356 ptr = umem_zalloc(size, UMEM_DEFAULT); 1357 if (ptr == NULL) 1358 smbstat_fail(1, gettext("out of memory")); 1359 return (ptr); 1360 } 1361 1362 static void 1363 smbstat_free(void *ptr, size_t size) 1364 { 1365 umem_free(ptr, size); 1366 } 1367