pstat.c revision 178987
1/*- 2 * Copyright (c) 1980, 1991, 1993, 1994 3 * The Regents of the University of California. All rights reserved. 4 * Copyright (c) 2002 Networks Associates Technologies, Inc. 5 * All rights reserved. 6 * 7 * Portions of this software were developed for the FreeBSD Project by 8 * ThinkSec AS and NAI Labs, the Security Research Division of Network 9 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 10 * ("CBOSS"), as part of the DARPA CHATS research program. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37#if 0 38#ifndef lint 39static const char copyright[] = 40"@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 41 The Regents of the University of California. All rights reserved.\n"; 42#endif /* not lint */ 43 44#ifndef lint 45static char sccsid[] = "@(#)pstat.c 8.16 (Berkeley) 5/9/95"; 46#endif /* not lint */ 47#endif 48#include <sys/cdefs.h> 49__FBSDID("$FreeBSD: head/usr.sbin/pstat/pstat.c 178987 2008-05-14 00:22:57Z remko $"); 50 51#include <sys/param.h> 52#include <sys/time.h> 53#include <sys/file.h> 54#include <sys/stat.h> 55#include <sys/stdint.h> 56#include <sys/ioctl.h> 57#include <sys/ioctl_compat.h> /* XXX NTTYDISC is too well hidden */ 58#include <sys/tty.h> 59#include <sys/blist.h> 60 61#include <sys/sysctl.h> 62#include <vm/vm_param.h> 63 64#include <err.h> 65#include <errno.h> 66#include <fcntl.h> 67#include <kvm.h> 68#include <libutil.h> 69#include <limits.h> 70#include <nlist.h> 71#include <stdio.h> 72#include <stdlib.h> 73#include <string.h> 74#include <unistd.h> 75 76enum { 77 NL_CONSTTY, 78 NL_MAXFILES, 79 NL_NFILES, 80 NL_TTY_LIST 81}; 82 83static struct nlist nl[] = { 84 { .n_name = "_constty" }, 85 { .n_name = "_maxfiles" }, 86 { .n_name = "_openfiles" }, 87 { .n_name = "_tty_list" }, 88 { .n_name = "" } 89}; 90 91static int humanflag; 92static int usenumflag; 93static int totalflag; 94static int swapflag; 95static char *nlistf; 96static char *memf; 97static kvm_t *kd; 98 99static char *usagestr; 100 101static void filemode(void); 102static int getfiles(char **, size_t *); 103static void swapmode(void); 104static void ttymode(void); 105static void ttyprt(struct xtty *); 106static void usage(void); 107 108int 109main(int argc, char *argv[]) 110{ 111 int ch, i, quit, ret; 112 int fileflag, ttyflag; 113 char buf[_POSIX2_LINE_MAX],*opts; 114 115 fileflag = swapflag = ttyflag = 0; 116 117 /* We will behave like good old swapinfo if thus invoked */ 118 opts = strrchr(argv[0], '/'); 119 if (opts) 120 opts++; 121 else 122 opts = argv[0]; 123 if (!strcmp(opts, "swapinfo")) { 124 swapflag = 1; 125 opts = "ghkmM:N:"; 126 usagestr = "swapinfo [-ghkm] [-M core [-N system]]"; 127 } else { 128 opts = "TM:N:fghkmnst"; 129 usagestr = "pstat [-Tfghkmnst] [-M core [-N system]]"; 130 } 131 132 while ((ch = getopt(argc, argv, opts)) != -1) 133 switch (ch) { 134 case 'f': 135 fileflag = 1; 136 break; 137 case 'g': 138 setenv("BLOCKSIZE", "1G", 1); 139 break; 140 case 'h': 141 humanflag = 1; 142 break; 143 case 'k': 144 setenv("BLOCKSIZE", "1K", 1); 145 break; 146 case 'm': 147 setenv("BLOCKSIZE", "1M", 1); 148 break; 149 case 'M': 150 memf = optarg; 151 break; 152 case 'N': 153 nlistf = optarg; 154 break; 155 case 'n': 156 usenumflag = 1; 157 break; 158 case 's': 159 ++swapflag; 160 break; 161 case 'T': 162 totalflag = 1; 163 break; 164 case 't': 165 ttyflag = 1; 166 break; 167 default: 168 usage(); 169 } 170 argc -= optind; 171 argv += optind; 172 173 if (memf != NULL) { 174 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf); 175 if (kd == NULL) 176 errx(1, "kvm_openfiles: %s", buf); 177 if ((ret = kvm_nlist(kd, nl)) != 0) { 178 if (ret == -1) 179 errx(1, "kvm_nlist: %s", kvm_geterr(kd)); 180 quit = 0; 181 for (i = 0; nl[i].n_name[0] != '\0'; ++i) 182 if (nl[i].n_value == 0) { 183 quit = 1; 184 warnx("undefined symbol: %s", 185 nl[i].n_name); 186 } 187 if (quit) 188 exit(1); 189 } 190 } 191 if (!(fileflag | ttyflag | swapflag | totalflag)) 192 usage(); 193 if (fileflag || totalflag) 194 filemode(); 195 if (ttyflag) 196 ttymode(); 197 if (swapflag || totalflag) 198 swapmode(); 199 exit (0); 200} 201 202static void 203usage(void) 204{ 205 fprintf(stderr, "usage: %s\n", usagestr); 206 exit (1); 207} 208 209static const char fhdr32[] = 210 " LOC TYPE FLG CNT MSG DATA OFFSET\n"; 211/* c0000000 ------ RWAI 123 123 c0000000 1000000000000000 */ 212 213static const char fhdr64[] = 214 " LOC TYPE FLG CNT MSG DATA OFFSET\n"; 215/* c000000000000000 ------ RWAI 123 123 c000000000000000 1000000000000000 */ 216 217static const char hdr[] = 218" LINE RAW CAN OUT IHIWT ILOWT OHWT LWT COL STATE SESS PGID DISC\n"; 219 220static void 221ttymode_kvm(void) 222{ 223 TAILQ_HEAD(, tty) tl; 224 struct tty *tp, tty; 225 struct xtty xt; 226 227 (void)printf("%s", hdr); 228 bzero(&xt, sizeof xt); 229 xt.xt_size = sizeof xt; 230 if (kvm_read(kd, nl[NL_TTY_LIST].n_value, &tl, sizeof tl) != sizeof tl) 231 errx(1, "kvm_read(): %s", kvm_geterr(kd)); 232 tp = TAILQ_FIRST(&tl); 233 while (tp != NULL) { 234 if (kvm_read(kd, (u_long)tp, &tty, sizeof tty) != sizeof tty) 235 errx(1, "kvm_read(): %s", kvm_geterr(kd)); 236 xt.xt_rawcc = tty.t_rawq.c_cc; 237 xt.xt_cancc = tty.t_canq.c_cc; 238 xt.xt_outcc = tty.t_outq.c_cc; 239#define XT_COPY(field) xt.xt_##field = tty.t_##field 240 XT_COPY(line); 241 XT_COPY(state); 242 XT_COPY(column); 243 XT_COPY(ihiwat); 244 XT_COPY(ilowat); 245 XT_COPY(ohiwat); 246 XT_COPY(olowat); 247#undef XT_COPY 248 ttyprt(&xt); 249 tp = TAILQ_NEXT(&tty, t_list); 250 } 251} 252 253static void 254ttymode_sysctl(void) 255{ 256 struct xtty *xt, *end; 257 void *xttys; 258 size_t len; 259 260 (void)printf("%s", hdr); 261 if ((xttys = malloc(len = sizeof *xt)) == NULL) 262 err(1, "malloc()"); 263 while (sysctlbyname("kern.ttys", xttys, &len, 0, 0) == -1) { 264 if (errno != ENOMEM) 265 err(1, "sysctlbyname()"); 266 len *= 2; 267 if ((xttys = realloc(xttys, len)) == NULL) 268 err(1, "realloc()"); 269 } 270 if (len > 0) { 271 end = (struct xtty *)((char *)xttys + len); 272 for (xt = xttys; xt < end; xt++) 273 ttyprt(xt); 274 } 275} 276 277static void 278ttymode(void) 279{ 280 281 if (kd != NULL) 282 ttymode_kvm(); 283 else 284 ttymode_sysctl(); 285} 286 287static struct { 288 int flag; 289 char val; 290} ttystates[] = { 291#ifdef TS_WOPEN 292 { TS_WOPEN, 'W'}, 293#endif 294 { TS_ISOPEN, 'O'}, 295 { TS_CARR_ON, 'C'}, 296#ifdef TS_CONNECTED 297 { TS_CONNECTED, 'c'}, 298#endif 299 { TS_TIMEOUT, 'T'}, 300 { TS_FLUSH, 'F'}, 301 { TS_BUSY, 'B'}, 302#ifdef TS_ASLEEP 303 { TS_ASLEEP, 'A'}, 304#endif 305#ifdef TS_SO_OLOWAT 306 { TS_SO_OLOWAT, 'A'}, 307#endif 308#ifdef TS_SO_OCOMPLETE 309 { TS_SO_OCOMPLETE, 'a'}, 310#endif 311 { TS_XCLUDE, 'X'}, 312 { TS_TTSTOP, 'S'}, 313#ifdef TS_CAR_OFLOW 314 { TS_CAR_OFLOW, 'm'}, 315#endif 316#ifdef TS_CTS_OFLOW 317 { TS_CTS_OFLOW, 'o'}, 318#endif 319#ifdef TS_DSR_OFLOW 320 { TS_DSR_OFLOW, 'd'}, 321#endif 322 { TS_TBLOCK, 'K'}, 323 { TS_ASYNC, 'Y'}, 324 { TS_BKSL, 'D'}, 325 { TS_ERASE, 'E'}, 326 { TS_LNCH, 'L'}, 327 { TS_TYPEN, 'P'}, 328 { TS_CNTTB, 'N'}, 329#ifdef TS_CAN_BYPASS_L_RINT 330 { TS_CAN_BYPASS_L_RINT, 'l'}, 331#endif 332#ifdef TS_SNOOP 333 { TS_SNOOP, 's'}, 334#endif 335#ifdef TS_ZOMBIE 336 { TS_ZOMBIE, 'Z'}, 337#endif 338 { 0, '\0'}, 339}; 340 341static void 342ttyprt(struct xtty *xt) 343{ 344 int i, j; 345 char *name, state[20]; 346 347 if (xt->xt_size != sizeof *xt) 348 errx(1, "struct xtty size mismatch"); 349 if (usenumflag || xt->xt_dev == 0 || 350 (name = devname(xt->xt_dev, S_IFCHR)) == NULL) 351 printf(" %2d,%-2d", major(xt->xt_dev), minor(xt->xt_dev)); 352 else 353 (void)printf("%7s ", name); 354 (void)printf("%2ld %3ld ", xt->xt_rawcc, xt->xt_cancc); 355 (void)printf("%3ld %5d %5d %4d %3d %7d ", xt->xt_outcc, 356 xt->xt_ihiwat, xt->xt_ilowat, xt->xt_ohiwat, xt->xt_olowat, 357 xt->xt_column); 358 for (i = j = 0; ttystates[i].flag; i++) 359 if (xt->xt_state & ttystates[i].flag) 360 state[j++] = ttystates[i].val; 361 if (j == 0) 362 state[j++] = '-'; 363 state[j] = '\0'; 364 (void)printf("%-6s %8d", state, xt->xt_sid); 365 (void)printf("%6d ", xt->xt_pgid); 366 switch (xt->xt_line) { 367 case TTYDISC: 368 (void)printf("term\n"); 369 break; 370 case NTTYDISC: 371 (void)printf("ntty\n"); 372 break; 373 case SLIPDISC: 374 (void)printf("slip\n"); 375 break; 376 case PPPDISC: 377 (void)printf("ppp\n"); 378 break; 379 default: 380 (void)printf("%d\n", xt->xt_line); 381 break; 382 } 383} 384 385static void 386filemode(void) 387{ 388 struct xfile *fp; 389 char *buf, flagbuf[16], *fbp; 390 int maxf, openf; 391 size_t len; 392 static char *dtypes[] = { "???", "inode", "socket", "pipe", 393 "fifo", "kqueue", "crypto" }; 394 int i; 395 int wid; 396 397 if (kd != NULL) { 398 if (kvm_read(kd, nl[NL_MAXFILES].n_value, 399 &maxf, sizeof maxf) != sizeof maxf || 400 kvm_read(kd, nl[NL_NFILES].n_value, 401 &openf, sizeof openf) != sizeof openf) 402 errx(1, "kvm_read(): %s", kvm_geterr(kd)); 403 } else { 404 len = sizeof(int); 405 if (sysctlbyname("kern.maxfiles", &maxf, &len, 0, 0) == -1 || 406 sysctlbyname("kern.openfiles", &openf, &len, 0, 0) == -1) 407 err(1, "sysctlbyname()"); 408 } 409 410 if (totalflag) { 411 (void)printf("%3d/%3d files\n", openf, maxf); 412 return; 413 } 414 if (getfiles(&buf, &len) == -1) 415 return; 416 openf = len / sizeof *fp; 417 418 (void)printf("%d/%d open files\n", openf, maxf); 419 printf(sizeof(uintptr_t) == 4 ? fhdr32 : fhdr64); 420 wid = (int)sizeof(uintptr_t) * 2; 421 for (fp = (struct xfile *)buf, i = 0; i < openf; ++fp, ++i) { 422 if ((size_t)fp->xf_type >= sizeof(dtypes) / sizeof(dtypes[0])) 423 continue; 424 (void)printf("%*jx", wid, (uintmax_t)(uintptr_t)fp->xf_file); 425 (void)printf(" %-6.6s", dtypes[fp->xf_type]); 426 fbp = flagbuf; 427 if (fp->xf_flag & FREAD) 428 *fbp++ = 'R'; 429 if (fp->xf_flag & FWRITE) 430 *fbp++ = 'W'; 431 if (fp->xf_flag & FAPPEND) 432 *fbp++ = 'A'; 433 if (fp->xf_flag & FASYNC) 434 *fbp++ = 'I'; 435 *fbp = '\0'; 436 (void)printf(" %4s %3d", flagbuf, fp->xf_count); 437 (void)printf(" %3d", fp->xf_msgcount); 438 (void)printf(" %*jx", wid, (uintmax_t)(uintptr_t)fp->xf_data); 439 (void)printf(" %*jx\n", (int)sizeof(fp->xf_offset) * 2, 440 (uintmax_t)fp->xf_offset); 441 } 442 free(buf); 443} 444 445static int 446getfiles(char **abuf, size_t *alen) 447{ 448 size_t len; 449 int mib[2]; 450 char *buf; 451 452 /* 453 * XXX 454 * Add emulation of KINFO_FILE here. 455 */ 456 if (kd != NULL) 457 errx(1, "files on dead kernel, not implemented"); 458 459 mib[0] = CTL_KERN; 460 mib[1] = KERN_FILE; 461 if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) { 462 warn("sysctl: KERN_FILE"); 463 return (-1); 464 } 465 if ((buf = malloc(len)) == NULL) 466 errx(1, "malloc"); 467 if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) { 468 warn("sysctl: KERN_FILE"); 469 return (-1); 470 } 471 *abuf = buf; 472 *alen = len; 473 return (0); 474} 475 476/* 477 * swapmode is based on a program called swapinfo written 478 * by Kevin Lahey <kml@rokkaku.atl.ga.us>. 479 */ 480 481#define CONVERT(v) ((int64_t)(v) * pagesize / blocksize) 482static struct kvm_swap swtot; 483static int nswdev; 484 485static void 486print_swap_header(void) 487{ 488 int hlen; 489 long blocksize; 490 const char *header; 491 492 header = getbsize(&hlen, &blocksize); 493 if (totalflag == 0) 494 (void)printf("%-15s %*s %8s %8s %8s\n", 495 "Device", hlen, header, 496 "Used", "Avail", "Capacity"); 497} 498 499static void 500print_swap_line(const char *devname, intmax_t nblks, intmax_t bused, 501 intmax_t bavail, float bpercent) 502{ 503 char usedbuf[5]; 504 char availbuf[5]; 505 int hlen, pagesize; 506 long blocksize; 507 508 pagesize = getpagesize(); 509 getbsize(&hlen, &blocksize); 510 511 printf("%-15s %*jd ", devname, hlen, CONVERT(nblks)); 512 if (humanflag) { 513 humanize_number(usedbuf, sizeof(usedbuf), 514 CONVERT(blocksize * bused), "", 515 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 516 humanize_number(availbuf, sizeof(availbuf), 517 CONVERT(blocksize * bavail), "", 518 HN_AUTOSCALE, HN_B | HN_NOSPACE | HN_DECIMAL); 519 printf("%8s %8s %5.0f%%\n", usedbuf, availbuf, bpercent); 520 } else { 521 printf("%8jd %8jd %5.0f%%\n", (intmax_t)CONVERT(bused), 522 (intmax_t)CONVERT(bavail), bpercent); 523 } 524} 525 526static void 527print_swap(struct kvm_swap *ksw) 528{ 529 530 swtot.ksw_total += ksw->ksw_total; 531 swtot.ksw_used += ksw->ksw_used; 532 ++nswdev; 533 if (totalflag == 0) 534 print_swap_line(ksw->ksw_devname, ksw->ksw_total, 535 ksw->ksw_used, ksw->ksw_total - ksw->ksw_used, 536 (ksw->ksw_used * 100.0) / ksw->ksw_total); 537} 538 539static void 540print_swap_total(void) 541{ 542 int hlen, pagesize; 543 long blocksize; 544 545 pagesize = getpagesize(); 546 getbsize(&hlen, &blocksize); 547 if (totalflag) { 548 blocksize = 1024 * 1024; 549 (void)printf("%jdM/%jdM swap space\n", 550 CONVERT(swtot.ksw_used), CONVERT(swtot.ksw_total)); 551 } else if (nswdev > 1) { 552 print_swap_line("Total", swtot.ksw_total, swtot.ksw_used, 553 swtot.ksw_total - swtot.ksw_used, 554 (swtot.ksw_used * 100.0) / swtot.ksw_total); 555 } 556} 557 558static void 559swapmode_kvm(void) 560{ 561 struct kvm_swap kswap[16]; 562 int i, n; 563 564 n = kvm_getswapinfo(kd, kswap, sizeof kswap / sizeof kswap[0], 565 SWIF_DEV_PREFIX); 566 567 print_swap_header(); 568 for (i = 0; i < n; ++i) 569 print_swap(&kswap[i]); 570 print_swap_total(); 571} 572 573static void 574swapmode_sysctl(void) 575{ 576 struct kvm_swap ksw; 577 struct xswdev xsw; 578 size_t mibsize, size; 579 int mib[16], n; 580 581 print_swap_header(); 582 mibsize = sizeof mib / sizeof mib[0]; 583 if (sysctlnametomib("vm.swap_info", mib, &mibsize) == -1) 584 err(1, "sysctlnametomib()"); 585 for (n = 0; ; ++n) { 586 mib[mibsize] = n; 587 size = sizeof xsw; 588 if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, 0) == -1) 589 break; 590 if (xsw.xsw_version != XSWDEV_VERSION) 591 errx(1, "xswdev version mismatch"); 592 if (xsw.xsw_dev == NODEV) 593 snprintf(ksw.ksw_devname, sizeof ksw.ksw_devname, 594 "<NFSfile>"); 595 else 596 snprintf(ksw.ksw_devname, sizeof ksw.ksw_devname, 597 "/dev/%s", devname(xsw.xsw_dev, S_IFCHR)); 598 ksw.ksw_used = xsw.xsw_used; 599 ksw.ksw_total = xsw.xsw_nblks; 600 ksw.ksw_flags = xsw.xsw_flags; 601 print_swap(&ksw); 602 } 603 if (errno != ENOENT) 604 err(1, "sysctl()"); 605 print_swap_total(); 606} 607 608static void 609swapmode(void) 610{ 611 if (kd != NULL) 612 swapmode_kvm(); 613 else 614 swapmode_sysctl(); 615} 616