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 * Copyright 2010 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 * Copyright (c) 2016 by Delphix. All rights reserved. 25 * Copyright 2017 Jason King 26 */ 27 28 #include <stdio.h> 29 #include <kstat.h> 30 #include <stdlib.h> 31 #include <string.h> 32 #include <strings.h> 33 #include <errno.h> 34 #include <limits.h> 35 #include <sys/types.h> 36 #include <time.h> 37 #include <sys/time.h> 38 #include <sys/uio.h> 39 #include <sys/vnode.h> 40 #include <sys/vfs.h> 41 #include <sys/statvfs.h> 42 #include <sys/fstyp.h> 43 #include <sys/fsid.h> 44 #include <sys/mnttab.h> 45 #include <sys/debug.h> 46 #include <values.h> 47 #include <poll.h> 48 #include <ctype.h> 49 #include <libintl.h> 50 #include <locale.h> 51 #include <signal.h> 52 #include <libcmdutils.h> 53 54 #include "statcommon.h" 55 56 /* 57 * For now, parsable output is turned off. Once we gather feedback and 58 * stablize the output format, we'll turn it back on. This prevents 59 * the situation where users build tools which depend on a specific 60 * format before we declare the output stable. 61 */ 62 #define PARSABLE_OUTPUT 0 63 64 #if PARSABLE_OUTPUT 65 #define OPTIONS "FPT:afginv" 66 #else 67 #define OPTIONS "FT:afginv" 68 #endif 69 70 /* Time stamp values */ 71 #define NODATE 0 /* Default: No time stamp */ 72 #define DDATE 1 /* Standard date format */ 73 #define UDATE 2 /* Internal representation of Unix time */ 74 75 #define RETRY_DELAY 250 /* Timeout for poll() */ 76 #define HEADERLINES 12 /* Number of lines between display headers */ 77 78 #define LBUFSZ 64 /* Generic size for local buffer */ 79 CTASSERT(LBUFSZ >= NN_NUMBUF_SZ); 80 81 #define NENTITY_INIT 1 /* Initial number of entities to allocate */ 82 83 /* 84 * We need to have a mechanism for an old/previous and new/current vopstat 85 * structure. We only need two per entity and we can swap between them. 86 */ 87 #define VS_SIZE 2 /* Size of vopstat array */ 88 #define CUR_INDEX (vs_i) 89 #define PREV_INDEX ((vs_i == 0) ? 1 : 0) /* Opposite of CUR_INDEX */ 90 #define BUMP_INDEX() vs_i = ((vs_i == 0) ? 1 : 0) 91 92 /* 93 * An "entity" is anything we're collecting statistics on, it could 94 * be a mountpoint or an FS-type. 95 * e_name is the name of the entity (e.g. mount point or FS-type) 96 * e_ksname is the name of the associated kstat 97 * e_vs is an array of vopstats. This is used to keep track of "previous" 98 * and "current" vopstats. 99 */ 100 typedef struct entity { 101 char *e_name; /* name of entity */ 102 vopstats_t *e_vs; /* Array of vopstats */ 103 ulong_t e_fsid; /* fsid for ENTYPE_MNTPT only */ 104 int e_type; /* type of entity */ 105 char e_ksname[KSTAT_STRLEN]; /* kstat name */ 106 } entity_t; 107 108 /* Types of entities (e_type) */ 109 #define ENTYPE_UNKNOWN 0 /* UNKNOWN must be zero since we calloc() */ 110 #define ENTYPE_FSTYPE 1 111 #define ENTYPE_MNTPT 2 112 113 char *cmdname; /* name of this command */ 114 int caught_cont = 0; /* have caught a SIGCONT */ 115 116 static uint_t timestamp_fmt = NODATE; /* print timestamp with stats */ 117 118 static int vs_i = 0; /* Index of current vs[] slot */ 119 120 static void 121 usage() 122 { 123 (void) fprintf(stderr, gettext( 124 "Usage: %s [-a|f|i|n|v] [-T d|u] {-F | {fstype | fspath}...} " 125 "[interval [count]]\n"), cmdname); 126 exit(2); 127 } 128 129 #define RAWVAL(ptr, member) ((ptr)->member.value.ui64) 130 #define DELTA(member) \ 131 (newvsp->member.value.ui64 - (oldvsp ? oldvsp->member.value.ui64 : 0)) 132 133 #define PRINTSTAT(isnice, nicestring, rawstring, rawval, buf) \ 134 (isnice) ? \ 135 nicenum(rawval, buf, sizeof (buf)), \ 136 (void) printf((nicestring), (buf)) \ 137 : \ 138 (void) printf((rawstring), (rawval)) 139 140 /* Values for display flag */ 141 #define DISP_HEADER 0x1 142 #define DISP_RAW 0x2 143 144 /* 145 * The policy for dealing with multiple flags is dealt with here. 146 * Currently, if we are displaying raw output, then don't allow 147 * headers to be printed. 148 */ 149 int 150 dispflag_policy(int printhdr, int dispflag) 151 { 152 /* If we're not displaying raw output, then allow headers to print */ 153 if ((dispflag & DISP_RAW) == 0) { 154 if (printhdr) { 155 dispflag |= DISP_HEADER; 156 } 157 } 158 159 return (dispflag); 160 } 161 162 static void 163 dflt_display(char *name, vopstats_t *oldvsp, vopstats_t *newvsp, int dispflag) 164 { 165 int niceflag = ((dispflag & DISP_RAW) == 0); 166 longlong_t nnewfile; 167 longlong_t nnamerm; 168 longlong_t nnamechg; 169 longlong_t nattrret; 170 longlong_t nattrchg; 171 longlong_t nlookup; 172 longlong_t nreaddir; 173 longlong_t ndataread; 174 longlong_t ndatawrite; 175 longlong_t readthruput; 176 longlong_t writethruput; 177 char buf[LBUFSZ]; 178 179 nnewfile = DELTA(ncreate) + DELTA(nmkdir) + DELTA(nsymlink); 180 nnamerm = DELTA(nremove) + DELTA(nrmdir); 181 nnamechg = DELTA(nrename) + DELTA(nlink) + DELTA(nsymlink); 182 nattrret = DELTA(ngetattr) + DELTA(naccess) + 183 DELTA(ngetsecattr) + DELTA(nfid); 184 nattrchg = DELTA(nsetattr) + DELTA(nsetsecattr) + DELTA(nspace); 185 nlookup = DELTA(nlookup); 186 nreaddir = DELTA(nreaddir); 187 ndataread = DELTA(nread); 188 ndatawrite = DELTA(nwrite); 189 readthruput = DELTA(read_bytes); 190 writethruput = DELTA(write_bytes); 191 192 if (dispflag & DISP_HEADER) { 193 (void) printf( 194 " new name name attr attr lookup rddir read read write write\n" 195 " file remov chng get set ops ops ops bytes ops bytes\n"); 196 } 197 198 PRINTSTAT(niceflag, "%5s ", "%lld:", nnewfile, buf); 199 PRINTSTAT(niceflag, "%5s ", "%lld:", nnamerm, buf); 200 PRINTSTAT(niceflag, "%5s ", "%lld:", nnamechg, buf); 201 PRINTSTAT(niceflag, "%5s ", "%lld:", nattrret, buf); 202 PRINTSTAT(niceflag, "%5s ", "%lld:", nattrchg, buf); 203 PRINTSTAT(niceflag, " %5s ", "%lld:", nlookup, buf); 204 PRINTSTAT(niceflag, "%5s ", "%lld:", nreaddir, buf); 205 PRINTSTAT(niceflag, "%5s ", "%lld:", ndataread, buf); 206 PRINTSTAT(niceflag, "%5s ", "%lld:", readthruput, buf); 207 PRINTSTAT(niceflag, "%5s ", "%lld:", ndatawrite, buf); 208 PRINTSTAT(niceflag, "%5s ", "%lld:", writethruput, buf); 209 (void) printf("%s\n", name); 210 } 211 212 static void 213 io_display(char *name, vopstats_t *oldvsp, vopstats_t *newvsp, int dispflag) 214 { 215 int niceflag = ((dispflag & DISP_RAW) == 0); 216 char buf[LBUFSZ]; 217 218 if (dispflag & DISP_HEADER) { 219 (void) printf( 220 " read read write write rddir rddir rwlock rwulock\n" 221 " ops bytes ops bytes ops bytes ops ops\n"); 222 } 223 224 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nread), buf); 225 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(read_bytes), buf); 226 227 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nwrite), buf); 228 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(write_bytes), buf); 229 230 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nreaddir), buf); 231 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(readdir_bytes), buf); 232 233 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(nrwlock), buf); 234 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nrwunlock), buf); 235 236 (void) printf("%s\n", name); 237 } 238 239 static void 240 vm_display(char *name, vopstats_t *oldvsp, vopstats_t *newvsp, int dispflag) 241 { 242 int niceflag = ((dispflag & DISP_RAW) == 0); 243 char buf[LBUFSZ]; 244 245 if (dispflag & DISP_HEADER) { 246 (void) printf(" map addmap delmap getpag putpag pagio\n"); 247 } 248 249 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nmap), buf); 250 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(naddmap), buf); 251 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(ndelmap), buf); 252 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(ngetpage), buf); 253 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(nputpage), buf); 254 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(npageio), buf); 255 (void) printf("%s\n", name); 256 } 257 258 static void 259 attr_display(char *name, vopstats_t *oldvsp, vopstats_t *newvsp, int dispflag) 260 { 261 int niceflag = ((dispflag & DISP_RAW) == 0); 262 char buf[LBUFSZ]; 263 264 if (dispflag & DISP_HEADER) { 265 (void) printf("getattr setattr getsec setsec\n"); 266 } 267 268 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(ngetattr), buf); 269 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(nsetattr), buf); 270 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(ngetsecattr), buf); 271 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(nsetsecattr), buf); 272 273 (void) printf("%s\n", name); 274 } 275 276 static void 277 naming_display(char *name, vopstats_t *oldvsp, vopstats_t *newvsp, int dispflag) 278 { 279 int niceflag = ((dispflag & DISP_RAW) == 0); 280 char buf[LBUFSZ]; 281 282 if (dispflag & DISP_HEADER) { 283 (void) printf( 284 "lookup creat remov link renam mkdir rmdir rddir symlnk rdlnk\n"); 285 } 286 287 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nlookup), buf); 288 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(ncreate), buf); 289 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nremove), buf); 290 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nlink), buf); 291 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nrename), buf); 292 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nmkdir), buf); 293 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nrmdir), buf); 294 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nreaddir), buf); 295 PRINTSTAT(niceflag, " %5s ", "%lld:", DELTA(nsymlink), buf); 296 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(nreadlink), buf); 297 (void) printf("%s\n", name); 298 } 299 300 301 #define PRINT_VOPSTAT_CMN(niceflag, vop) \ 302 if (niceflag) \ 303 (void) printf("%10s ", #vop); \ 304 PRINTSTAT(niceflag, "%5s ", "%lld:", DELTA(n##vop), buf); 305 306 #define PRINT_VOPSTAT(niceflag, vop) \ 307 PRINT_VOPSTAT_CMN(niceflag, vop); \ 308 if (niceflag) \ 309 (void) printf("\n"); 310 311 #define PRINT_VOPSTAT_IO(niceflag, vop) \ 312 PRINT_VOPSTAT_CMN(niceflag, vop); \ 313 PRINTSTAT(niceflag, " %5s\n", "%lld:", \ 314 DELTA(vop##_bytes), buf); 315 316 static void 317 vop_display(char *name, vopstats_t *oldvsp, vopstats_t *newvsp, int dispflag) 318 { 319 int niceflag = ((dispflag & DISP_RAW) == 0); 320 char buf[LBUFSZ]; 321 322 if (niceflag) { 323 (void) printf("%s\n", name); 324 (void) printf(" operation #ops bytes\n"); 325 } 326 327 PRINT_VOPSTAT(niceflag, open); 328 PRINT_VOPSTAT(niceflag, close); 329 PRINT_VOPSTAT_IO(niceflag, read); 330 PRINT_VOPSTAT_IO(niceflag, write); 331 PRINT_VOPSTAT(niceflag, ioctl); 332 PRINT_VOPSTAT(niceflag, setfl); 333 PRINT_VOPSTAT(niceflag, getattr); 334 PRINT_VOPSTAT(niceflag, setattr); 335 PRINT_VOPSTAT(niceflag, access); 336 PRINT_VOPSTAT(niceflag, lookup); 337 PRINT_VOPSTAT(niceflag, create); 338 PRINT_VOPSTAT(niceflag, remove); 339 PRINT_VOPSTAT(niceflag, link); 340 PRINT_VOPSTAT(niceflag, rename); 341 PRINT_VOPSTAT(niceflag, mkdir); 342 PRINT_VOPSTAT(niceflag, rmdir); 343 PRINT_VOPSTAT_IO(niceflag, readdir); 344 PRINT_VOPSTAT(niceflag, symlink); 345 PRINT_VOPSTAT(niceflag, readlink); 346 PRINT_VOPSTAT(niceflag, fsync); 347 PRINT_VOPSTAT(niceflag, inactive); 348 PRINT_VOPSTAT(niceflag, fid); 349 PRINT_VOPSTAT(niceflag, rwlock); 350 PRINT_VOPSTAT(niceflag, rwunlock); 351 PRINT_VOPSTAT(niceflag, seek); 352 PRINT_VOPSTAT(niceflag, cmp); 353 PRINT_VOPSTAT(niceflag, frlock); 354 PRINT_VOPSTAT(niceflag, space); 355 PRINT_VOPSTAT(niceflag, realvp); 356 PRINT_VOPSTAT(niceflag, getpage); 357 PRINT_VOPSTAT(niceflag, putpage); 358 PRINT_VOPSTAT(niceflag, map); 359 PRINT_VOPSTAT(niceflag, addmap); 360 PRINT_VOPSTAT(niceflag, delmap); 361 PRINT_VOPSTAT(niceflag, poll); 362 PRINT_VOPSTAT(niceflag, dump); 363 PRINT_VOPSTAT(niceflag, pathconf); 364 PRINT_VOPSTAT(niceflag, pageio); 365 PRINT_VOPSTAT(niceflag, dumpctl); 366 PRINT_VOPSTAT(niceflag, dispose); 367 PRINT_VOPSTAT(niceflag, getsecattr); 368 PRINT_VOPSTAT(niceflag, setsecattr); 369 PRINT_VOPSTAT(niceflag, shrlock); 370 PRINT_VOPSTAT(niceflag, vnevent); 371 PRINT_VOPSTAT(niceflag, reqzcbuf); 372 PRINT_VOPSTAT(niceflag, retzcbuf); 373 374 if (niceflag) { 375 /* Make it easier on the eyes */ 376 (void) printf("\n"); 377 } else { 378 (void) printf("%s\n", name); 379 } 380 } 381 382 383 /* 384 * Retrieve the vopstats. If kspp (pointer to kstat_t pointer) is non-NULL, 385 * then pass it back to the caller. 386 * 387 * Returns 0 on success, non-zero on failure. 388 */ 389 int 390 get_vopstats(kstat_ctl_t *kc, char *ksname, vopstats_t *vsp, kstat_t **kspp) 391 { 392 kstat_t *ksp; 393 394 if (ksname == NULL || *ksname == 0) 395 return (1); 396 397 errno = 0; 398 /* wait for a possibly up-to-date chain */ 399 while (kstat_chain_update(kc) == -1) { 400 if (errno == EAGAIN) { 401 errno = 0; 402 (void) poll(NULL, 0, RETRY_DELAY); 403 continue; 404 } 405 perror("kstat_chain_update"); 406 exit(1); 407 } 408 409 if ((ksp = kstat_lookup(kc, NULL, -1, ksname)) == NULL) { 410 return (1); 411 } 412 413 if (kstat_read(kc, ksp, vsp) == -1) { 414 return (1); 415 } 416 417 if (kspp) 418 *kspp = ksp; 419 420 return (0); 421 } 422 423 /* 424 * Given a file system type name, determine if it's part of the 425 * exception list of file systems that are not to be displayed. 426 */ 427 int 428 is_exception(char *fsname) 429 { 430 char **xlp; /* Pointer into the exception list */ 431 432 static char *exception_list[] = { 433 "specfs", 434 "fifofs", 435 "fd", 436 "swapfs", 437 "ctfs", 438 "objfs", 439 "nfsdyn", 440 NULL 441 }; 442 443 for (xlp = &exception_list[0]; *xlp != NULL; xlp++) { 444 if (strcmp(fsname, *xlp) == 0) 445 return (1); 446 } 447 448 return (0); 449 } 450 451 /* 452 * Plain and simple, build an array of names for fstypes 453 * Returns 0, if it encounters a problem. 454 */ 455 int 456 build_fstype_list(char ***fstypep) 457 { 458 int i; 459 int nfstype; 460 char buf[FSTYPSZ + 1]; 461 462 if ((nfstype = sysfs(GETNFSTYP)) < 0) { 463 perror("sysfs(GETNFSTYP)"); 464 return (0); 465 } 466 467 if ((*fstypep = calloc(nfstype, sizeof (char *))) == NULL) { 468 perror("calloc() fstypes"); 469 return (0); 470 } 471 472 for (i = 1; i < nfstype; i++) { 473 if (sysfs(GETFSTYP, i, buf) < 0) { 474 perror("sysfs(GETFSTYP)"); 475 return (0); 476 } 477 478 if (buf[0] == 0) 479 continue; 480 481 /* If this is part of the exception list, move on */ 482 if (is_exception(buf)) 483 continue; 484 485 if (((*fstypep)[i] = strdup(buf)) == NULL) { 486 perror("strdup() fstype name"); 487 return (0); 488 } 489 } 490 491 return (i); 492 } 493 494 /* 495 * After we're done with getopts(), process the rest of the 496 * operands. We have three cases and this is the priority: 497 * 498 * 1) [ operand... ] interval count 499 * 2) [ operand... ] interval 500 * 3) [ operand... ] 501 * 502 * The trick is that any of the operands might start with a number or even 503 * be made up exclusively of numbers (and we have to handle negative numbers 504 * in case a user/script gets out of line). If we find two operands at the 505 * end of the list then we claim case 1. If we find only one operand at the 506 * end made up only of number, then we claim case 2. Otherwise, case 3. 507 * BTW, argc, argv don't change. 508 */ 509 int 510 parse_operands( 511 int argc, 512 char **argv, 513 int optind, 514 long *interval, 515 long *count, 516 entity_t **entityp) /* Array of stat-able entities */ 517 { 518 int nentities = 0; /* Number of entities found */ 519 int out_of_range; /* Set if 2nd-to-last operand out-of-range */ 520 521 if (argc == optind) 522 return (nentities); /* None found, returns 0 */ 523 /* 524 * We know exactly what the maximum number of entities is going 525 * to be: argc - optind 526 */ 527 if ((*entityp = calloc((argc - optind), sizeof (entity_t))) == NULL) { 528 perror("calloc() entities"); 529 return (-1); 530 } 531 532 for (/* void */; argc > optind; optind++) { 533 char *endptr; 534 535 /* If we have more than two operands left to process */ 536 if ((argc - optind) > 2) { 537 (*entityp)[nentities++].e_name = strdup(argv[optind]); 538 continue; 539 } 540 541 /* If we're here, then we only have one or two operands left */ 542 errno = 0; 543 out_of_range = 0; 544 *interval = strtol(argv[optind], &endptr, 10); 545 if (*endptr && !isdigit((int)*endptr)) { 546 /* Operand was not a number */ 547 (*entityp)[nentities++].e_name = strdup(argv[optind]); 548 continue; 549 } else if (errno == ERANGE || *interval <= 0 || 550 *interval > MAXLONG) { 551 /* Operand was a number, just out of range */ 552 out_of_range++; 553 } 554 555 /* 556 * The last operand we saw was a number. If it happened to 557 * be the last operand, then it is the interval... 558 */ 559 if ((argc - optind) == 1) { 560 /* ...but we need to check the range. */ 561 if (out_of_range) { 562 (void) fprintf(stderr, gettext( 563 "interval must be between 1 and " 564 "%ld (inclusive)\n"), MAXLONG); 565 return (-1); 566 } else { 567 /* 568 * The value of the interval is valid. Set 569 * count to something really big so it goes 570 * virtually forever. 571 */ 572 *count = MAXLONG; 573 break; 574 } 575 } 576 577 /* 578 * At this point, we *might* have the interval, but if the 579 * next operand isn't a number, then we don't have either 580 * the interval nor the count. Both must be set to the 581 * defaults. In that case, both the current and the previous 582 * operands are stat-able entities. 583 */ 584 errno = 0; 585 *count = strtol(argv[optind + 1], &endptr, 10); 586 if (*endptr && !isdigit((int)*endptr)) { 587 /* 588 * Faked out! The last operand wasn't a number so 589 * the current and previous operands should be 590 * stat-able entities. We also need to reset interval. 591 */ 592 *interval = 0; 593 (*entityp)[nentities++].e_name = strdup(argv[optind++]); 594 (*entityp)[nentities++].e_name = strdup(argv[optind++]); 595 } else if (out_of_range || errno == ERANGE || *count <= 0) { 596 (void) fprintf(stderr, gettext( 597 "Both interval and count must be between 1 " 598 "and %ld (inclusive)\n"), MAXLONG); 599 return (-1); 600 } 601 break; /* Done! */ 602 } 603 return (nentities); 604 } 605 606 /* 607 * set_mntpt() looks at the entity's name (e_name) and finds its 608 * mountpoint. To do this, we need to build a list of mountpoints 609 * from /etc/mnttab. We only need to do this once and we don't do it 610 * if we don't need to look at any mountpoints. 611 * Returns 0 on success, non-zero if it couldn't find a mount-point. 612 */ 613 int 614 set_mntpt(entity_t *ep) 615 { 616 static struct mnt { 617 struct mnt *m_next; 618 char *m_mntpt; 619 ulong_t m_fsid; /* From statvfs(), set only as needed */ 620 } *mnt_list = NULL; /* Linked list of mount-points */ 621 struct mnt *mntp; 622 struct statvfs64 statvfsbuf; 623 char *original_name = ep->e_name; 624 char path[PATH_MAX]; 625 626 if (original_name == NULL) /* Shouldn't happen */ 627 return (1); 628 629 /* We only set up mnt_list the first time this is called */ 630 if (mnt_list == NULL) { 631 FILE *fp; 632 struct mnttab mnttab; 633 634 if ((fp = fopen(MNTTAB, "r")) == NULL) { 635 perror(MNTTAB); 636 return (1); 637 } 638 resetmnttab(fp); 639 /* 640 * We insert at the front of the list so that when we 641 * search entries we'll have the last mounted entries 642 * first in the list so that we can match the longest 643 * mountpoint. 644 */ 645 while (getmntent(fp, &mnttab) == 0) { 646 if ((mntp = malloc(sizeof (*mntp))) == NULL) { 647 perror("malloc() mount list"); 648 return (1); 649 } 650 mntp->m_mntpt = strdup(mnttab.mnt_mountp); 651 mntp->m_next = mnt_list; 652 mnt_list = mntp; 653 } 654 (void) fclose(fp); 655 } 656 657 if (realpath(original_name, path) == NULL) { 658 perror(original_name); 659 return (1); 660 } 661 662 /* 663 * Now that we have the path, walk through the mnt_list and 664 * look for the first (best) match. 665 */ 666 for (mntp = mnt_list; mntp; mntp = mntp->m_next) { 667 if (strncmp(path, mntp->m_mntpt, strlen(mntp->m_mntpt)) == 0) { 668 if (mntp->m_fsid == 0) { 669 if (statvfs64(mntp->m_mntpt, &statvfsbuf)) { 670 /* Can't statvfs so no match */ 671 continue; 672 } else { 673 mntp->m_fsid = statvfsbuf.f_fsid; 674 } 675 } 676 677 if (ep->e_fsid != mntp->m_fsid) { 678 /* No match - Move on */ 679 continue; 680 } 681 682 break; 683 } 684 } 685 686 if (mntp == NULL) { 687 (void) fprintf(stderr, gettext( 688 "Can't find mount point for %s\n"), path); 689 return (1); 690 } 691 692 ep->e_name = strdup(mntp->m_mntpt); 693 free(original_name); 694 return (0); 695 } 696 697 /* 698 * We have an array of entities that are potentially stat-able. Using 699 * the name (e_name) of the entity, attempt to construct a ksname suitable 700 * for use by kstat_lookup(3kstat) and fill it into the e_ksname member. 701 * 702 * We check the e_name against the list of file system types. If there is 703 * no match then test to see if the path is valid. If the path is valid, 704 * then determine the mountpoint. 705 */ 706 void 707 set_ksnames(entity_t *entities, int nentities, char **fstypes, int nfstypes) 708 { 709 int i, j; 710 struct statvfs64 statvfsbuf; 711 712 for (i = 0; i < nentities; i++) { 713 entity_t *ep = &entities[i]; 714 715 /* Check the name against the list of fstypes */ 716 for (j = 1; j < nfstypes; j++) { 717 if (fstypes[j] && ep->e_name && 718 strcmp(ep->e_name, fstypes[j]) == 0) { 719 /* It's a file system type */ 720 ep->e_type = ENTYPE_FSTYPE; 721 (void) snprintf(ep->e_ksname, KSTAT_STRLEN, 722 "%s%s", VOPSTATS_STR, ep->e_name); 723 /* Now allocate the vopstats array */ 724 ep->e_vs = calloc(VS_SIZE, sizeof (vopstats_t)); 725 if (entities[i].e_vs == NULL) { 726 perror("calloc() fstype vopstats"); 727 exit(1); 728 } 729 break; 730 } 731 } 732 if (j < nfstypes) /* Found it! */ 733 continue; 734 735 /* 736 * If the entity in the exception list of fstypes, then 737 * null out the entry so it isn't displayed and move along. 738 */ 739 if (is_exception(ep->e_name)) { 740 ep->e_ksname[0] = 0; 741 continue; 742 } 743 744 /* If we didn't find it, see if it's a path */ 745 if (ep->e_name == NULL || statvfs64(ep->e_name, &statvfsbuf)) { 746 /* Error - Make sure the entry is nulled out */ 747 ep->e_ksname[0] = 0; 748 continue; 749 } 750 (void) snprintf(ep->e_ksname, KSTAT_STRLEN, "%s%lx", 751 VOPSTATS_STR, statvfsbuf.f_fsid); 752 ep->e_fsid = statvfsbuf.f_fsid; 753 if (set_mntpt(ep)) { 754 (void) fprintf(stderr, 755 gettext("Can't determine type of \"%s\"\n"), 756 ep->e_name ? ep->e_name : gettext("<NULL>")); 757 } else { 758 ep->e_type = ENTYPE_MNTPT; 759 } 760 761 /* Now allocate the vopstats array */ 762 ep->e_vs = calloc(VS_SIZE, sizeof (vopstats_t)); 763 if (entities[i].e_vs == NULL) { 764 perror("calloc() vopstats array"); 765 exit(1); 766 } 767 } 768 } 769 770 /* 771 * The idea is that 'dspfunc' should only be modified from the default 772 * once since the display options are mutually exclusive. If 'dspfunc' 773 * only contains the default display function, then all is good and we 774 * can set it to the new display function. Otherwise, bail. 775 */ 776 void 777 set_dispfunc( 778 void (**dspfunc)(char *, vopstats_t *, vopstats_t *, int), 779 void (*newfunc)(char *, vopstats_t *, vopstats_t *, int)) 780 { 781 if (*dspfunc != dflt_display) { 782 (void) fprintf(stderr, gettext( 783 "%s: Display options -{a|f|i|n|v} are mutually exclusive\n"), 784 cmdname); 785 usage(); 786 } 787 *dspfunc = newfunc; 788 } 789 790 int 791 main(int argc, char *argv[]) 792 { 793 int c; 794 int i, j; /* Generic counters */ 795 int nentities_found; 796 int linesout = 0; /* Keeps track of lines printed */ 797 int printhdr = 0; /* Print a header? 0 = no, 1 = yes */ 798 int nfstypes; /* Number of fstypes */ 799 int dispflag = 0; /* Flags for display control */ 800 long count = 0; /* Number of iterations for display */ 801 int forever; /* Run forever */ 802 long interval = 0; 803 boolean_t fstypes_only = B_FALSE; /* Display fstypes only */ 804 char **fstypes; /* Array of names of all fstypes */ 805 int nentities; /* Number of stat-able entities */ 806 entity_t *entities; /* Array of stat-able entities */ 807 kstat_ctl_t *kc; 808 void (*dfunc)(char *, vopstats_t *, vopstats_t *, int) = dflt_display; 809 hrtime_t start_n; /* Start time */ 810 hrtime_t period_n; /* Interval in nanoseconds */ 811 812 extern int optind; 813 814 (void) setlocale(LC_ALL, ""); 815 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 816 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 817 #endif 818 (void) textdomain(TEXT_DOMAIN); 819 820 /* Don't let buffering interfere with piped output. */ 821 (void) setvbuf(stdout, NULL, _IOLBF, 0); 822 823 cmdname = argv[0]; 824 while ((c = getopt(argc, argv, OPTIONS)) != EOF) { 825 switch (c) { 826 827 default: 828 usage(); 829 break; 830 831 case 'F': /* Only display available FStypes */ 832 fstypes_only = B_TRUE; 833 break; 834 835 #if PARSABLE_OUTPUT 836 case 'P': /* Parsable output */ 837 dispflag |= DISP_RAW; 838 break; 839 #endif /* PARSABLE_OUTPUT */ 840 841 case 'T': /* Timestamp */ 842 if (optarg) { 843 if (strcmp(optarg, "u") == 0) { 844 timestamp_fmt = UDATE; 845 } else if (strcmp(optarg, "d") == 0) { 846 timestamp_fmt = DDATE; 847 } 848 } 849 850 /* If it was never set properly... */ 851 if (timestamp_fmt == NODATE) { 852 (void) fprintf(stderr, gettext("%s: -T option " 853 "requires either 'u' or 'd'\n"), cmdname); 854 usage(); 855 } 856 break; 857 858 case 'a': 859 set_dispfunc(&dfunc, attr_display); 860 break; 861 862 case 'f': 863 set_dispfunc(&dfunc, vop_display); 864 break; 865 866 case 'i': 867 set_dispfunc(&dfunc, io_display); 868 break; 869 870 case 'n': 871 set_dispfunc(&dfunc, naming_display); 872 break; 873 874 case 'v': 875 set_dispfunc(&dfunc, vm_display); 876 break; 877 } 878 } 879 880 #if PARSABLE_OUTPUT 881 if ((dispflag & DISP_RAW) && (timestamp_fmt != NODATE)) { 882 (void) fprintf(stderr, gettext( 883 "-P and -T options are mutually exclusive\n")); 884 usage(); 885 } 886 #endif /* PARSABLE_OUTPUT */ 887 888 /* Gather the list of filesystem types */ 889 if ((nfstypes = build_fstype_list(&fstypes)) == 0) { 890 (void) fprintf(stderr, 891 gettext("Can't build list of fstypes\n")); 892 exit(1); 893 } 894 895 nentities = parse_operands( 896 argc, argv, optind, &interval, &count, &entities); 897 forever = count == MAXLONG; 898 period_n = (hrtime_t)interval * NANOSEC; 899 900 if (nentities == -1) /* Set of operands didn't parse properly */ 901 usage(); 902 903 if ((nentities == 0) && (fstypes_only == B_FALSE)) { 904 (void) fprintf(stderr, gettext( 905 "Must specify -F or at least one fstype or mount point\n")); 906 usage(); 907 } 908 909 if ((nentities > 0) && (fstypes_only == B_TRUE)) { 910 (void) fprintf(stderr, gettext( 911 "Cannot use -F with fstypes or mount points\n")); 912 usage(); 913 } 914 915 /* 916 * If we had no operands (except for interval/count) and we 917 * requested FStypes only (-F), then fill in the entities[] 918 * array with all available fstypes. 919 */ 920 if ((nentities == 0) && (fstypes_only == B_TRUE)) { 921 if ((entities = calloc(nfstypes, sizeof (entity_t))) == NULL) { 922 perror("calloc() fstype stats"); 923 exit(1); 924 } 925 926 for (i = 1; i < nfstypes; i++) { 927 if (fstypes[i]) { 928 entities[nentities].e_name = strdup(fstypes[i]); 929 nentities++; 930 } 931 } 932 } 933 934 set_ksnames(entities, nentities, fstypes, nfstypes); 935 936 if ((kc = kstat_open()) == NULL) { 937 perror("kstat_open"); 938 exit(1); 939 } 940 941 /* Set start time */ 942 start_n = gethrtime(); 943 944 /* Initial timestamp */ 945 if (timestamp_fmt != NODATE) { 946 print_timestamp(timestamp_fmt); 947 linesout++; 948 } 949 950 /* 951 * The following loop walks through the entities[] list to "prime 952 * the pump" 953 */ 954 for (j = 0, printhdr = 1; j < nentities; j++) { 955 entity_t *ent = &entities[j]; 956 vopstats_t *vsp = &ent->e_vs[CUR_INDEX]; 957 kstat_t *ksp = NULL; 958 959 if (get_vopstats(kc, ent->e_ksname, vsp, &ksp) == 0) { 960 (*dfunc)(ent->e_name, NULL, vsp, 961 dispflag_policy(printhdr, dispflag)); 962 linesout++; 963 } else { 964 /* 965 * If we can't find it the first time through, then 966 * get rid of it. 967 */ 968 entities[j].e_ksname[0] = 0; 969 970 /* 971 * If we're only displaying FStypes (-F) then don't 972 * complain about any file systems that might not 973 * be loaded. Otherwise, let the user know that 974 * they chose poorly. 975 */ 976 if (fstypes_only == B_FALSE) { 977 (void) fprintf(stderr, gettext( 978 "No statistics available for %s\n"), 979 entities[j].e_name); 980 } 981 } 982 printhdr = 0; 983 } 984 985 if (count > 1) 986 /* Set up signal handler for SIGCONT */ 987 if (signal(SIGCONT, cont_handler) == SIG_ERR) 988 fail(1, "signal failed"); 989 990 991 BUMP_INDEX(); /* Swap the previous/current indices */ 992 i = 1; 993 while (forever || i++ <= count) { 994 /* 995 * No telling how many lines will be printed in any interval. 996 * There should be a minimum of HEADERLINES between any 997 * header. If we exceed that, no big deal. 998 */ 999 if (linesout > HEADERLINES) { 1000 linesout = 0; 1001 printhdr = 1; 1002 } 1003 /* Have a kip */ 1004 sleep_until(&start_n, period_n, forever, &caught_cont); 1005 1006 if (timestamp_fmt != NODATE) { 1007 print_timestamp(timestamp_fmt); 1008 linesout++; 1009 } 1010 1011 for (j = 0, nentities_found = 0; j < nentities; j++) { 1012 entity_t *ent = &entities[j]; 1013 1014 /* 1015 * If this entry has been cleared, don't attempt 1016 * to process it. 1017 */ 1018 if (ent->e_ksname[0] == 0) { 1019 continue; 1020 } 1021 1022 if (get_vopstats(kc, ent->e_ksname, 1023 &ent->e_vs[CUR_INDEX], NULL) == 0) { 1024 (*dfunc)(ent->e_name, &ent->e_vs[PREV_INDEX], 1025 &ent->e_vs[CUR_INDEX], 1026 dispflag_policy(printhdr, dispflag)); 1027 linesout++; 1028 nentities_found++; 1029 } else { 1030 if (ent->e_type == ENTYPE_MNTPT) { 1031 (void) printf(gettext( 1032 "<<mount point no longer " 1033 "available: %s>>\n"), ent->e_name); 1034 } else if (ent->e_type == ENTYPE_FSTYPE) { 1035 (void) printf(gettext( 1036 "<<file system module no longer " 1037 "loaded: %s>>\n"), ent->e_name); 1038 } else { 1039 (void) printf(gettext( 1040 "<<%s no longer available>>\n"), 1041 ent->e_name); 1042 } 1043 /* Disable this so it doesn't print again */ 1044 ent->e_ksname[0] = 0; 1045 } 1046 printhdr = 0; /* Always shut this off */ 1047 } 1048 BUMP_INDEX(); /* Bump the previous/current indices */ 1049 1050 /* 1051 * If the entities we were observing are no longer there 1052 * (file system modules unloaded, file systems unmounted) 1053 * then we're done. 1054 */ 1055 if (nentities_found == 0) 1056 break; 1057 } 1058 1059 return (0); 1060 } 1061