pstat.c revision 108602
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 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the University of 23 * California, Berkeley and its contributors. 24 * 4. Neither the name of the University nor the names of its contributors 25 * may be used to endorse or promote products derived from this software 26 * without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 30 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 31 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 32 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 * SUCH DAMAGE. 39 */ 40 41#ifndef lint 42static const char copyright[] = 43"@(#) Copyright (c) 1980, 1991, 1993, 1994\n\ 44 The Regents of the University of California. All rights reserved.\n"; 45#endif /* not lint */ 46 47#ifndef lint 48#if 0 49static char sccsid[] = "@(#)pstat.c 8.16 (Berkeley) 5/9/95"; 50#endif 51static const char rcsid[] = 52 "$FreeBSD: head/usr.sbin/pstat/pstat.c 108602 2003-01-03 16:23:12Z phk $"; 53#endif /* not lint */ 54 55#include <sys/param.h> 56#include <sys/time.h> 57#include <sys/file.h> 58#include <sys/stat.h> 59#include <sys/stdint.h> 60#include <sys/ioctl.h> 61#include <sys/ioctl_compat.h> /* XXX NTTYDISC is too well hidden */ 62#include <sys/tty.h> 63#include <sys/blist.h> 64 65#include <sys/user.h> 66#include <sys/sysctl.h> 67#include <vm/swap_pager.h> 68 69#include <err.h> 70#include <fcntl.h> 71#include <kvm.h> 72#include <limits.h> 73#include <nlist.h> 74#include <stdio.h> 75#include <stdlib.h> 76#include <string.h> 77#include <unistd.h> 78 79enum { 80 NL_CONSTTY, 81 NL_MAXFILES, 82 NL_NFILES, 83 NL_TTY_LIST 84}; 85 86static struct nlist nl[] = { 87 { "_constty", 0 }, 88 { "_maxfiles", 0 }, 89 { "_nfiles", 0 }, 90 { "_tty_list", 0 }, 91 { "" } 92}; 93 94static int usenumflag; 95static int totalflag; 96static int swapflag; 97static char *nlistf; 98static char *memf; 99static kvm_t *kd; 100 101static char *usagestr; 102 103static void filemode(void); 104static int getfiles(char **, size_t *); 105static void swapmode(void); 106static void ttymode(void); 107static void ttyprt(struct xtty *); 108static void usage(void); 109 110int 111main(int argc, char *argv[]) 112{ 113 int ch, i, quit, ret; 114 int fileflag, ttyflag; 115 char buf[_POSIX2_LINE_MAX],*opts; 116 117 fileflag = swapflag = ttyflag = 0; 118 119 /* We will behave like good old swapinfo if thus invoked */ 120 opts = strrchr(argv[0], '/'); 121 if (opts) 122 opts++; 123 else 124 opts = argv[0]; 125 if (!strcmp(opts, "swapinfo")) { 126 swapflag = 1; 127 opts = "kM:N:"; 128 usagestr = "swapinfo [-k] [-M core] [-N system]"; 129 } else { 130 opts = "TM:N:fknst"; 131 usagestr = "pstat [-Tfknst] [-M core] [-N system]"; 132 } 133 134 while ((ch = getopt(argc, argv, opts)) != -1) 135 switch (ch) { 136 case 'f': 137 fileflag = 1; 138 break; 139 case 'k': 140 putenv("BLOCKSIZE=1K"); 141 break; 142 case 'M': 143 memf = optarg; 144 break; 145 case 'N': 146 nlistf = optarg; 147 break; 148 case 'n': 149 usenumflag = 1; 150 break; 151 case 's': 152 ++swapflag; 153 break; 154 case 'T': 155 totalflag = 1; 156 break; 157 case 't': 158 ttyflag = 1; 159 break; 160 default: 161 usage(); 162 } 163 argc -= optind; 164 argv += optind; 165 166 if (memf != NULL) { 167 kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf); 168 if (kd == NULL) 169 errx(1, "kvm_openfiles: %s", buf); 170 if ((ret = kvm_nlist(kd, nl)) != 0) { 171 if (ret == -1) 172 errx(1, "kvm_nlist: %s", kvm_geterr(kd)); 173 quit = 0; 174 for (i = 0; nl[i].n_name[0] != '\0'; ++i) 175 if (nl[i].n_value == 0) { 176 quit = 1; 177 warnx("undefined symbol: %s", 178 nl[i].n_name); 179 } 180 if (quit) 181 exit(1); 182 } 183 } 184 if (!(fileflag | ttyflag | swapflag | totalflag)) 185 usage(); 186 if (fileflag || totalflag) 187 filemode(); 188 if (ttyflag) 189 ttymode(); 190 if (swapflag || totalflag) 191 swapmode(); 192 exit (0); 193} 194 195static void 196usage(void) 197{ 198 fprintf(stderr, "usage: %s\n", usagestr); 199 exit (1); 200} 201 202static const char hdr[] = 203" LINE RAW CAN OUT IHIWT ILOWT OHWT LWT COL STATE SESS PGID DISC\n"; 204 205static void 206ttymode_kvm(void) 207{ 208 SLIST_HEAD(, tty) tl; 209 struct tty *tp, tty; 210 struct xtty xt; 211 212 (void)printf("%s", hdr); 213 bzero(&xt, sizeof xt); 214 xt.xt_size = sizeof xt; 215 if (kvm_read(kd, nl[NL_TTY_LIST].n_value, &tl, sizeof tl) != sizeof tl) 216 errx(1, "kvm_read(): %s", kvm_geterr(kd)); 217 tp = SLIST_FIRST(&tl); 218 while (tp != NULL) { 219 if (kvm_read(kd, (u_long)tp, &tty, sizeof tty) != sizeof tty) 220 errx(1, "kvm_read(): %s", kvm_geterr(kd)); 221 xt.xt_rawcc = tty.t_rawq.c_cc; 222 xt.xt_cancc = tty.t_canq.c_cc; 223 xt.xt_outcc = tty.t_outq.c_cc; 224#define XT_COPY(field) xt.xt_##field = tty.t_##field 225 XT_COPY(line); 226 XT_COPY(state); 227 XT_COPY(column); 228 XT_COPY(ihiwat); 229 XT_COPY(ilowat); 230 XT_COPY(ohiwat); 231 XT_COPY(olowat); 232#undef XT_COPY 233 ttyprt(&xt); 234 tp = tty.t_list.sle_next; 235 } 236} 237 238static void 239ttymode_sysctl(void) 240{ 241 struct xtty *xt, *end; 242 void *xttys; 243 size_t len; 244 245 (void)printf("%s", hdr); 246 if ((xttys = malloc(len = sizeof *xt)) == NULL) 247 err(1, "malloc()"); 248 while (sysctlbyname("kern.ttys", xttys, &len, 0, 0) == -1) { 249 if (errno != ENOMEM) 250 err(1, "sysctlbyname()"); 251 len *= 2; 252 if ((xttys = realloc(xttys, len)) == NULL) 253 err(1, "realloc()"); 254 } 255 if (len > 0) { 256 end = (struct xtty *)((char *)xttys + len); 257 for (xt = xttys; xt < end; xt++) 258 ttyprt(xt); 259 } 260} 261 262static void 263ttymode(void) 264{ 265 266 if (kd != NULL) 267 ttymode_kvm(); 268 else 269 ttymode_sysctl(); 270} 271 272static struct { 273 int flag; 274 char val; 275} ttystates[] = { 276#ifdef TS_WOPEN 277 { TS_WOPEN, 'W'}, 278#endif 279 { TS_ISOPEN, 'O'}, 280 { TS_CARR_ON, 'C'}, 281#ifdef TS_CONNECTED 282 { TS_CONNECTED, 'c'}, 283#endif 284 { TS_TIMEOUT, 'T'}, 285 { TS_FLUSH, 'F'}, 286 { TS_BUSY, 'B'}, 287#ifdef TS_ASLEEP 288 { TS_ASLEEP, 'A'}, 289#endif 290#ifdef TS_SO_OLOWAT 291 { TS_SO_OLOWAT, 'A'}, 292#endif 293#ifdef TS_SO_OCOMPLETE 294 { TS_SO_OCOMPLETE, 'a'}, 295#endif 296 { TS_XCLUDE, 'X'}, 297 { TS_TTSTOP, 'S'}, 298#ifdef TS_CAR_OFLOW 299 { TS_CAR_OFLOW, 'm'}, 300#endif 301#ifdef TS_CTS_OFLOW 302 { TS_CTS_OFLOW, 'o'}, 303#endif 304#ifdef TS_DSR_OFLOW 305 { TS_DSR_OFLOW, 'd'}, 306#endif 307 { TS_TBLOCK, 'K'}, 308 { TS_ASYNC, 'Y'}, 309 { TS_BKSL, 'D'}, 310 { TS_ERASE, 'E'}, 311 { TS_LNCH, 'L'}, 312 { TS_TYPEN, 'P'}, 313 { TS_CNTTB, 'N'}, 314#ifdef TS_CAN_BYPASS_L_RINT 315 { TS_CAN_BYPASS_L_RINT, 'l'}, 316#endif 317#ifdef TS_SNOOP 318 { TS_SNOOP, 's'}, 319#endif 320#ifdef TS_ZOMBIE 321 { TS_ZOMBIE, 'Z'}, 322#endif 323 { 0, '\0'}, 324}; 325 326static void 327ttyprt(struct xtty *xt) 328{ 329 int i, j; 330 pid_t pgid; 331 char *name, state[20]; 332 333 if (xt->xt_size != sizeof *xt) 334 errx(1, "struct xtty size mismatch"); 335 if (usenumflag || xt->xt_dev == 0 || 336 (name = devname(xt->xt_dev, S_IFCHR)) == NULL) 337 (void)printf(" %2d,%-2d", major(xt->xt_dev), minor(xt->xt_dev)); 338 else 339 (void)printf("%7s ", name); 340 (void)printf("%2ld %3ld ", xt->xt_rawcc, xt->xt_cancc); 341 (void)printf("%3ld %5d %5d %4d %3d %7d ", xt->xt_outcc, 342 xt->xt_ihiwat, xt->xt_ilowat, xt->xt_ohiwat, xt->xt_olowat, 343 xt->xt_column); 344 for (i = j = 0; ttystates[i].flag; i++) 345 if (xt->xt_state & ttystates[i].flag) 346 state[j++] = ttystates[i].val; 347 if (j == 0) 348 state[j++] = '-'; 349 state[j] = '\0'; 350 (void)printf("%-6s %8d", state, xt->xt_sid); 351 pgid = 0; 352 (void)printf("%6d ", xt->xt_pgid); 353 switch (xt->xt_line) { 354 case TTYDISC: 355 (void)printf("term\n"); 356 break; 357 case NTTYDISC: 358 (void)printf("ntty\n"); 359 break; 360 case SLIPDISC: 361 (void)printf("slip\n"); 362 break; 363 case PPPDISC: 364 (void)printf("ppp\n"); 365 break; 366 default: 367 (void)printf("%d\n", xt->xt_line); 368 break; 369 } 370} 371 372static void 373filemode(void) 374{ 375 struct xfile *fp; 376 char *buf, flagbuf[16], *fbp; 377 int maxf, openf; 378 size_t len; 379 static char *dtypes[] = { "???", "inode", "socket" }; 380 int i; 381 382 if (kd != NULL) { 383 if (kvm_read(kd, nl[NL_MAXFILES].n_value, 384 &maxf, sizeof maxf) != sizeof maxf || 385 kvm_read(kd, nl[NL_NFILES].n_value, 386 &openf, sizeof openf) != sizeof openf) 387 errx(1, "kvm_read(): %s", kvm_geterr(kd)); 388 } else { 389 len = sizeof(int); 390 if (sysctlbyname("kern.maxfiles", &maxf, &len, 0, 0) == -1 || 391 sysctlbyname("kern.openfiles", &openf, &len, 0, 0) == -1) 392 err(1, "sysctlbyname()"); 393 } 394 395 if (totalflag) { 396 (void)printf("%3d/%3d files\n", openf, maxf); 397 return; 398 } 399 if (getfiles(&buf, &len) == -1) 400 return; 401 openf = len / sizeof *fp; 402 (void)printf("%d/%d open files\n", openf, maxf); 403 (void)printf(" LOC TYPE FLG CNT MSG DATA OFFSET\n"); 404 for (fp = (struct xfile *)buf, i = 0; i < openf; ++fp, ++i) { 405 if ((unsigned)fp->xf_type > DTYPE_SOCKET) 406 continue; 407 (void)printf("%8jx ", (uintmax_t)(uintptr_t)fp->xf_file); 408 (void)printf("%-8.8s", dtypes[fp->xf_type]); 409 fbp = flagbuf; 410 if (fp->xf_flag & FREAD) 411 *fbp++ = 'R'; 412 if (fp->xf_flag & FWRITE) 413 *fbp++ = 'W'; 414 if (fp->xf_flag & FAPPEND) 415 *fbp++ = 'A'; 416 if (fp->xf_flag & FASYNC) 417 *fbp++ = 'I'; 418 *fbp = '\0'; 419 (void)printf("%6s %3d", flagbuf, fp->xf_count); 420 (void)printf(" %3d", fp->xf_msgcount); 421 (void)printf(" %8lx", (u_long)(void *)fp->xf_data); 422 (void)printf(" %jx\n", (uintmax_t)fp->xf_offset); 423 } 424 free(buf); 425} 426 427static int 428getfiles(char **abuf, size_t *alen) 429{ 430 size_t len; 431 int mib[2]; 432 char *buf; 433 434 /* 435 * XXX 436 * Add emulation of KINFO_FILE here. 437 */ 438 if (kd != NULL) 439 errx(1, "files on dead kernel, not implemented"); 440 441 mib[0] = CTL_KERN; 442 mib[1] = KERN_FILE; 443 if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) { 444 warn("sysctl: KERN_FILE"); 445 return (-1); 446 } 447 if ((buf = malloc(len)) == NULL) 448 errx(1, "malloc"); 449 if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) { 450 warn("sysctl: KERN_FILE"); 451 return (-1); 452 } 453 *abuf = buf; 454 *alen = len; 455 return (0); 456} 457 458/* 459 * swapmode is based on a program called swapinfo written 460 * by Kevin Lahey <kml@rokkaku.atl.ga.us>. 461 */ 462 463#define CONVERT(v) ((int)((intmax_t)(v) * pagesize / blocksize)) 464static struct kvm_swap swtot; 465static int nswdev; 466 467static void 468print_swap_header(void) 469{ 470 int hlen; 471 long blocksize; 472 const char *header; 473 474 header = getbsize(&hlen, &blocksize); 475 if (totalflag == 0) 476 (void)printf("%-15s %*s %8s %8s %8s %s\n", 477 "Device", hlen, header, 478 "Used", "Avail", "Capacity", "Type"); 479} 480 481static void 482print_swap(struct kvm_swap *ksw) 483{ 484 int hlen, pagesize; 485 long blocksize; 486 487 pagesize = getpagesize(); 488 getbsize(&hlen, &blocksize); 489 swtot.ksw_total += ksw->ksw_total; 490 swtot.ksw_used += ksw->ksw_used; 491 ++nswdev; 492 if (totalflag == 0) { 493 (void)printf("%-15s %*d ", 494 ksw->ksw_devname, hlen, 495 CONVERT(ksw->ksw_total)); 496 (void)printf("%8d %8d %5.0f%% %s\n", 497 CONVERT(ksw->ksw_used), 498 CONVERT(ksw->ksw_total - ksw->ksw_used), 499 (ksw->ksw_used * 100.0) / ksw->ksw_total, 500 (ksw->ksw_flags & SW_SEQUENTIAL) ? 501 "Sequential" : "Interleaved"); 502 } 503} 504 505static void 506print_swap_total(void) 507{ 508 int hlen, pagesize; 509 long blocksize; 510 511 pagesize = getpagesize(); 512 getbsize(&hlen, &blocksize); 513 if (totalflag) { 514 blocksize = 1024 * 1024; 515 (void)printf("%dM/%dM swap space\n", 516 CONVERT(swtot.ksw_used), CONVERT(swtot.ksw_total)); 517 } else if (nswdev > 1) { 518 (void)printf("%-15s %*d %8d %8d %5.0f%%\n", 519 "Total", hlen, CONVERT(swtot.ksw_total), 520 CONVERT(swtot.ksw_used), 521 CONVERT(swtot.ksw_total - swtot.ksw_used), 522 (swtot.ksw_used * 100.0) / swtot.ksw_total); 523 } 524} 525 526static void 527swapmode_kvm(void) 528{ 529 struct kvm_swap kswap[16]; 530 int i, n; 531 532 n = kvm_getswapinfo(kd, kswap, sizeof kswap / sizeof kswap[0], 533 ((swapflag > 1) ? SWIF_DUMP_TREE : 0) | SWIF_DEV_PREFIX); 534 535 print_swap_header(); 536 for (i = 0; i < n; ++i) 537 print_swap(&kswap[i]); 538 print_swap_total(); 539} 540 541static void 542swapmode_sysctl(void) 543{ 544 struct kvm_swap ksw; 545 struct xswdev xsw; 546 size_t mibsize, size; 547 int mib[16], n; 548 549 print_swap_header(); 550 mibsize = sizeof mib / sizeof mib[0]; 551 if (sysctlnametomib("vm.swap_info", mib, &mibsize) == -1) 552 err(1, "sysctlnametomib()"); 553 for (n = 0; ; ++n) { 554 mib[mibsize] = n; 555 size = sizeof xsw; 556 if (sysctl(mib, mibsize + 1, &xsw, &size, NULL, NULL) == -1) 557 break; 558 if (xsw.xsw_version != XSWDEV_VERSION) 559 errx(1, "xswdev version mismatch"); 560 snprintf(ksw.ksw_devname, sizeof ksw.ksw_devname, 561 "/dev/%s", devname(xsw.xsw_dev, S_IFCHR)); 562 ksw.ksw_used = xsw.xsw_used; 563 ksw.ksw_total = xsw.xsw_nblks; 564 ksw.ksw_flags = xsw.xsw_flags; 565 print_swap(&ksw); 566 } 567 if (errno != ENOENT) 568 err(1, "sysctl()"); 569 print_swap_total(); 570} 571 572static void 573swapmode(void) 574{ 575 if (kd != NULL) 576 swapmode_kvm(); 577 else 578 swapmode_sysctl(); 579} 580