machine.c revision 224062
1/* 2 * top - a top users display for Unix 3 * 4 * SYNOPSIS: For FreeBSD-2.x and later 5 * 6 * DESCRIPTION: 7 * Originally written for BSD4.4 system by Christos Zoulas. 8 * Ported to FreeBSD 2.x by Steven Wallace && Wolfram Schneider 9 * Order support hacked in from top-3.5beta6/machine/m_aix41.c 10 * by Monte Mitzelfelt (for latest top see http://www.groupsys.com/topinfo/) 11 * 12 * This is the machine-dependent module for FreeBSD 2.2 13 * Works for: 14 * FreeBSD 2.2.x, 3.x, 4.x, and probably FreeBSD 2.1.x 15 * 16 * LIBS: -lkvm 17 * 18 * AUTHOR: Christos Zoulas <christos@ee.cornell.edu> 19 * Steven Wallace <swallace@freebsd.org> 20 * Wolfram Schneider <wosch@FreeBSD.org> 21 * Thomas Moestl <tmoestl@gmx.net> 22 * 23 * $FreeBSD: head/usr.bin/top/machine.c 224062 2011-07-15 17:23:45Z jhb $ 24 */ 25 26#include <sys/param.h> 27#include <sys/errno.h> 28#include <sys/file.h> 29#include <sys/proc.h> 30#include <sys/resource.h> 31#include <sys/rtprio.h> 32#include <sys/signal.h> 33#include <sys/sysctl.h> 34#include <sys/time.h> 35#include <sys/user.h> 36#include <sys/vmmeter.h> 37 38#include <err.h> 39#include <kvm.h> 40#include <math.h> 41#include <nlist.h> 42#include <paths.h> 43#include <pwd.h> 44#include <stdio.h> 45#include <stdlib.h> 46#include <string.h> 47#include <strings.h> 48#include <unistd.h> 49#include <vis.h> 50 51#include "top.h" 52#include "machine.h" 53#include "screen.h" 54#include "utils.h" 55#include "layout.h" 56 57#define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var)) 58#define SMPUNAMELEN 13 59#define UPUNAMELEN 15 60 61extern struct process_select ps; 62extern char* printable(char *); 63static int smpmode; 64enum displaymodes displaymode; 65#ifdef TOP_USERNAME_LEN 66static int namelength = TOP_USERNAME_LEN; 67#else 68static int namelength = 8; 69#endif 70static int cmdlengthdelta; 71 72/* Prototypes for top internals */ 73void quit(int); 74 75/* get_process_info passes back a handle. This is what it looks like: */ 76 77struct handle { 78 struct kinfo_proc **next_proc; /* points to next valid proc pointer */ 79 int remaining; /* number of pointers remaining */ 80}; 81 82/* declarations for load_avg */ 83#include "loadavg.h" 84 85/* define what weighted cpu is. */ 86#define weighted_cpu(pct, pp) ((pp)->ki_swtime == 0 ? 0.0 : \ 87 ((pct) / (1.0 - exp((pp)->ki_swtime * logcpu)))) 88 89/* what we consider to be process size: */ 90#define PROCSIZE(pp) ((pp)->ki_size / 1024) 91 92#define RU(pp) (&(pp)->ki_rusage) 93#define RUTOT(pp) \ 94 (RU(pp)->ru_inblock + RU(pp)->ru_oublock + RU(pp)->ru_majflt) 95 96 97/* definitions for indices in the nlist array */ 98 99/* 100 * These definitions control the format of the per-process area 101 */ 102 103static char io_header[] = 104 " PID%s %-*.*s VCSW IVCSW READ WRITE FAULT TOTAL PERCENT COMMAND"; 105 106#define io_Proc_format \ 107 "%5d%s %-*.*s %6ld %6ld %6ld %6ld %6ld %6ld %6.2f%% %.*s" 108 109static char smp_header_thr[] = 110 " PID%s %-*.*s THR PRI NICE SIZE RES STATE C TIME %6s COMMAND"; 111static char smp_header[] = 112 " PID%s %-*.*s " "PRI NICE SIZE RES STATE C TIME %6s COMMAND"; 113 114#define smp_Proc_format \ 115 "%5d%s %-*.*s %s%3d %4s%7s %6s %-6.6s %2d%7s %5.2f%% %.*s" 116 117static char up_header_thr[] = 118 " PID%s %-*.*s THR PRI NICE SIZE RES STATE TIME %6s COMMAND"; 119static char up_header[] = 120 " PID%s %-*.*s " "PRI NICE SIZE RES STATE TIME %6s COMMAND"; 121 122#define up_Proc_format \ 123 "%5d%s %-*.*s %s%3d %4s%7s %6s %-6.6s%.0d%7s %5.2f%% %.*s" 124 125 126/* process state names for the "STATE" column of the display */ 127/* the extra nulls in the string "run" are for adding a slash and 128 the processor number when needed */ 129 130char *state_abbrev[] = { 131 "", "START", "RUN\0\0\0", "SLEEP", "STOP", "ZOMB", "WAIT", "LOCK" 132}; 133 134 135static kvm_t *kd; 136 137/* values that we stash away in _init and use in later routines */ 138 139static double logcpu; 140 141/* these are retrieved from the kernel in _init */ 142 143static load_avg ccpu; 144 145/* these are used in the get_ functions */ 146 147static int lastpid; 148 149/* these are for calculating cpu state percentages */ 150 151static long cp_time[CPUSTATES]; 152static long cp_old[CPUSTATES]; 153static long cp_diff[CPUSTATES]; 154 155/* these are for detailing the process states */ 156 157int process_states[8]; 158char *procstatenames[] = { 159 "", " starting, ", " running, ", " sleeping, ", " stopped, ", 160 " zombie, ", " waiting, ", " lock, ", 161 NULL 162}; 163 164/* these are for detailing the cpu states */ 165 166int cpu_states[CPUSTATES]; 167char *cpustatenames[] = { 168 "user", "nice", "system", "interrupt", "idle", NULL 169}; 170 171/* these are for detailing the memory statistics */ 172 173int memory_stats[7]; 174char *memorynames[] = { 175 "K Active, ", "K Inact, ", "K Wired, ", "K Cache, ", "K Buf, ", 176 "K Free", NULL 177}; 178 179int swap_stats[7]; 180char *swapnames[] = { 181 "K Total, ", "K Used, ", "K Free, ", "% Inuse, ", "K In, ", "K Out", 182 NULL 183}; 184 185 186/* these are for keeping track of the proc array */ 187 188static int nproc; 189static int onproc = -1; 190static int pref_len; 191static struct kinfo_proc *pbase; 192static struct kinfo_proc **pref; 193static struct kinfo_proc *previous_procs; 194static struct kinfo_proc **previous_pref; 195static int previous_proc_count = 0; 196static int previous_proc_count_max = 0; 197 198/* total number of io operations */ 199static long total_inblock; 200static long total_oublock; 201static long total_majflt; 202 203/* these are for getting the memory statistics */ 204 205static int pageshift; /* log base 2 of the pagesize */ 206 207/* define pagetok in terms of pageshift */ 208 209#define pagetok(size) ((size) << pageshift) 210 211/* useful externals */ 212long percentages(); 213 214#ifdef ORDER 215/* 216 * Sorting orders. The first element is the default. 217 */ 218char *ordernames[] = { 219 "cpu", "size", "res", "time", "pri", "threads", 220 "total", "read", "write", "fault", "vcsw", "ivcsw", 221 "jid", NULL 222}; 223#endif 224 225/* Per-cpu time states */ 226static int maxcpu; 227static int maxid; 228static int ncpus; 229static u_long cpumask; 230static long *times; 231static long *pcpu_cp_time; 232static long *pcpu_cp_old; 233static long *pcpu_cp_diff; 234static int *pcpu_cpu_states; 235 236static int compare_jid(const void *a, const void *b); 237static int compare_pid(const void *a, const void *b); 238static const char *format_nice(const struct kinfo_proc *pp); 239static void getsysctl(const char *name, void *ptr, size_t len); 240static int swapmode(int *retavail, int *retfree); 241 242void 243toggle_pcpustats(struct statics *statics) 244{ 245 246 if (ncpus == 1) 247 return; 248 249 /* Adjust display based on ncpus */ 250 if (pcpu_stats) { 251 y_mem += ncpus - 1; /* 3 */ 252 y_swap += ncpus - 1; /* 4 */ 253 y_idlecursor += ncpus - 1; /* 5 */ 254 y_message += ncpus - 1; /* 5 */ 255 y_header += ncpus - 1; /* 6 */ 256 y_procs += ncpus - 1; /* 7 */ 257 Header_lines += ncpus - 1; /* 7 */ 258 statics->ncpus = ncpus; 259 } else { 260 y_mem = 3; 261 y_swap = 4; 262 y_idlecursor = 5; 263 y_message = 5; 264 y_header = 6; 265 y_procs = 7; 266 Header_lines = 7; 267 statics->ncpus = 1; 268 } 269} 270 271int 272machine_init(struct statics *statics, char do_unames) 273{ 274 int i, j, empty, pagesize; 275 size_t size; 276 struct passwd *pw; 277 278 size = sizeof(smpmode); 279 if ((sysctlbyname("machdep.smp_active", &smpmode, &size, 280 NULL, 0) != 0 && 281 sysctlbyname("kern.smp.active", &smpmode, &size, 282 NULL, 0) != 0) || 283 size != sizeof(smpmode)) 284 smpmode = 0; 285 286 if (do_unames) { 287 while ((pw = getpwent()) != NULL) { 288 if (strlen(pw->pw_name) > namelength) 289 namelength = strlen(pw->pw_name); 290 } 291 } 292 if (smpmode && namelength > SMPUNAMELEN) 293 namelength = SMPUNAMELEN; 294 else if (namelength > UPUNAMELEN) 295 namelength = UPUNAMELEN; 296 297 kd = kvm_open(NULL, _PATH_DEVNULL, NULL, O_RDONLY, "kvm_open"); 298 if (kd == NULL) 299 return (-1); 300 301 GETSYSCTL("kern.ccpu", ccpu); 302 303 /* this is used in calculating WCPU -- calculate it ahead of time */ 304 logcpu = log(loaddouble(ccpu)); 305 306 pbase = NULL; 307 pref = NULL; 308 nproc = 0; 309 onproc = -1; 310 311 /* get the page size and calculate pageshift from it */ 312 pagesize = getpagesize(); 313 pageshift = 0; 314 while (pagesize > 1) { 315 pageshift++; 316 pagesize >>= 1; 317 } 318 319 /* we only need the amount of log(2)1024 for our conversion */ 320 pageshift -= LOG1024; 321 322 /* fill in the statics information */ 323 statics->procstate_names = procstatenames; 324 statics->cpustate_names = cpustatenames; 325 statics->memory_names = memorynames; 326 statics->swap_names = swapnames; 327#ifdef ORDER 328 statics->order_names = ordernames; 329#endif 330 331 /* Allocate state for per-CPU stats. */ 332 cpumask = 0; 333 ncpus = 0; 334 GETSYSCTL("kern.smp.maxcpus", maxcpu); 335 size = sizeof(long) * maxcpu * CPUSTATES; 336 times = malloc(size); 337 if (times == NULL) 338 err(1, "malloc %zd bytes", size); 339 if (sysctlbyname("kern.cp_times", times, &size, NULL, 0) == -1) 340 err(1, "sysctlbyname kern.cp_times"); 341 pcpu_cp_time = calloc(1, size); 342 maxid = (size / CPUSTATES / sizeof(long)) - 1; 343 for (i = 0; i <= maxid; i++) { 344 empty = 1; 345 for (j = 0; empty && j < CPUSTATES; j++) { 346 if (times[i * CPUSTATES + j] != 0) 347 empty = 0; 348 } 349 if (!empty) { 350 cpumask |= (1ul << i); 351 ncpus++; 352 } 353 } 354 size = sizeof(long) * ncpus * CPUSTATES; 355 pcpu_cp_old = calloc(1, size); 356 pcpu_cp_diff = calloc(1, size); 357 pcpu_cpu_states = calloc(1, size); 358 statics->ncpus = 1; 359 360 if (pcpu_stats) 361 toggle_pcpustats(statics); 362 363 /* all done! */ 364 return (0); 365} 366 367char * 368format_header(char *uname_field) 369{ 370 static char Header[128]; 371 const char *prehead; 372 373 switch (displaymode) { 374 case DISP_CPU: 375 /* 376 * The logic of picking the right header format seems reverse 377 * here because we only want to display a THR column when 378 * "thread mode" is off (and threads are not listed as 379 * separate lines). 380 */ 381 prehead = smpmode ? 382 (ps.thread ? smp_header : smp_header_thr) : 383 (ps.thread ? up_header : up_header_thr); 384 snprintf(Header, sizeof(Header), prehead, 385 ps.jail ? " JID" : "", 386 namelength, namelength, uname_field, 387 ps.wcpu ? "WCPU" : "CPU"); 388 break; 389 case DISP_IO: 390 prehead = io_header; 391 snprintf(Header, sizeof(Header), prehead, 392 ps.jail ? " JID" : "", 393 namelength, namelength, uname_field); 394 break; 395 } 396 cmdlengthdelta = strlen(Header) - 7; 397 return (Header); 398} 399 400static int swappgsin = -1; 401static int swappgsout = -1; 402extern struct timeval timeout; 403 404 405void 406get_system_info(struct system_info *si) 407{ 408 long total; 409 struct loadavg sysload; 410 int mib[2]; 411 struct timeval boottime; 412 size_t bt_size; 413 int i, j; 414 size_t size; 415 416 /* get the CPU stats */ 417 size = (maxid + 1) * CPUSTATES * sizeof(long); 418 if (sysctlbyname("kern.cp_times", pcpu_cp_time, &size, NULL, 0) == -1) 419 err(1, "sysctlbyname kern.cp_times"); 420 GETSYSCTL("kern.cp_time", cp_time); 421 GETSYSCTL("vm.loadavg", sysload); 422 GETSYSCTL("kern.lastpid", lastpid); 423 424 /* convert load averages to doubles */ 425 for (i = 0; i < 3; i++) 426 si->load_avg[i] = (double)sysload.ldavg[i] / sysload.fscale; 427 428 /* convert cp_time counts to percentages */ 429 for (i = j = 0; i <= maxid; i++) { 430 if ((cpumask & (1ul << i)) == 0) 431 continue; 432 percentages(CPUSTATES, &pcpu_cpu_states[j * CPUSTATES], 433 &pcpu_cp_time[j * CPUSTATES], 434 &pcpu_cp_old[j * CPUSTATES], 435 &pcpu_cp_diff[j * CPUSTATES]); 436 j++; 437 } 438 percentages(CPUSTATES, cpu_states, cp_time, cp_old, cp_diff); 439 440 /* sum memory & swap statistics */ 441 { 442 static unsigned int swap_delay = 0; 443 static int swapavail = 0; 444 static int swapfree = 0; 445 static long bufspace = 0; 446 static int nspgsin, nspgsout; 447 448 GETSYSCTL("vfs.bufspace", bufspace); 449 GETSYSCTL("vm.stats.vm.v_active_count", memory_stats[0]); 450 GETSYSCTL("vm.stats.vm.v_inactive_count", memory_stats[1]); 451 GETSYSCTL("vm.stats.vm.v_wire_count", memory_stats[2]); 452 GETSYSCTL("vm.stats.vm.v_cache_count", memory_stats[3]); 453 GETSYSCTL("vm.stats.vm.v_free_count", memory_stats[5]); 454 GETSYSCTL("vm.stats.vm.v_swappgsin", nspgsin); 455 GETSYSCTL("vm.stats.vm.v_swappgsout", nspgsout); 456 /* convert memory stats to Kbytes */ 457 memory_stats[0] = pagetok(memory_stats[0]); 458 memory_stats[1] = pagetok(memory_stats[1]); 459 memory_stats[2] = pagetok(memory_stats[2]); 460 memory_stats[3] = pagetok(memory_stats[3]); 461 memory_stats[4] = bufspace / 1024; 462 memory_stats[5] = pagetok(memory_stats[5]); 463 memory_stats[6] = -1; 464 465 /* first interval */ 466 if (swappgsin < 0) { 467 swap_stats[4] = 0; 468 swap_stats[5] = 0; 469 } 470 471 /* compute differences between old and new swap statistic */ 472 else { 473 swap_stats[4] = pagetok(((nspgsin - swappgsin))); 474 swap_stats[5] = pagetok(((nspgsout - swappgsout))); 475 } 476 477 swappgsin = nspgsin; 478 swappgsout = nspgsout; 479 480 /* call CPU heavy swapmode() only for changes */ 481 if (swap_stats[4] > 0 || swap_stats[5] > 0 || swap_delay == 0) { 482 swap_stats[3] = swapmode(&swapavail, &swapfree); 483 swap_stats[0] = swapavail; 484 swap_stats[1] = swapavail - swapfree; 485 swap_stats[2] = swapfree; 486 } 487 swap_delay = 1; 488 swap_stats[6] = -1; 489 } 490 491 /* set arrays and strings */ 492 if (pcpu_stats) { 493 si->cpustates = pcpu_cpu_states; 494 si->ncpus = ncpus; 495 } else { 496 si->cpustates = cpu_states; 497 si->ncpus = 1; 498 } 499 si->memory = memory_stats; 500 si->swap = swap_stats; 501 502 503 if (lastpid > 0) { 504 si->last_pid = lastpid; 505 } else { 506 si->last_pid = -1; 507 } 508 509 /* 510 * Print how long system has been up. 511 * (Found by looking getting "boottime" from the kernel) 512 */ 513 mib[0] = CTL_KERN; 514 mib[1] = KERN_BOOTTIME; 515 bt_size = sizeof(boottime); 516 if (sysctl(mib, 2, &boottime, &bt_size, NULL, 0) != -1 && 517 boottime.tv_sec != 0) { 518 si->boottime = boottime; 519 } else { 520 si->boottime.tv_sec = -1; 521 } 522} 523 524#define NOPROC ((void *)-1) 525 526/* 527 * We need to compare data from the old process entry with the new 528 * process entry. 529 * To facilitate doing this quickly we stash a pointer in the kinfo_proc 530 * structure to cache the mapping. We also use a negative cache pointer 531 * of NOPROC to avoid duplicate lookups. 532 * XXX: this could be done when the actual processes are fetched, we do 533 * it here out of laziness. 534 */ 535const struct kinfo_proc * 536get_old_proc(struct kinfo_proc *pp) 537{ 538 struct kinfo_proc **oldpp, *oldp; 539 540 /* 541 * If this is the first fetch of the kinfo_procs then we don't have 542 * any previous entries. 543 */ 544 if (previous_proc_count == 0) 545 return (NULL); 546 /* negative cache? */ 547 if (pp->ki_udata == NOPROC) 548 return (NULL); 549 /* cached? */ 550 if (pp->ki_udata != NULL) 551 return (pp->ki_udata); 552 /* 553 * Not cached, 554 * 1) look up based on pid. 555 * 2) compare process start. 556 * If we fail here, then setup a negative cache entry, otherwise 557 * cache it. 558 */ 559 oldpp = bsearch(&pp, previous_pref, previous_proc_count, 560 sizeof(*previous_pref), compare_pid); 561 if (oldpp == NULL) { 562 pp->ki_udata = NOPROC; 563 return (NULL); 564 } 565 oldp = *oldpp; 566 if (bcmp(&oldp->ki_start, &pp->ki_start, sizeof(pp->ki_start)) != 0) { 567 pp->ki_udata = NOPROC; 568 return (NULL); 569 } 570 pp->ki_udata = oldp; 571 return (oldp); 572} 573 574/* 575 * Return the total amount of IO done in blocks in/out and faults. 576 * store the values individually in the pointers passed in. 577 */ 578long 579get_io_stats(struct kinfo_proc *pp, long *inp, long *oup, long *flp, 580 long *vcsw, long *ivcsw) 581{ 582 const struct kinfo_proc *oldp; 583 static struct kinfo_proc dummy; 584 long ret; 585 586 oldp = get_old_proc(pp); 587 if (oldp == NULL) { 588 bzero(&dummy, sizeof(dummy)); 589 oldp = &dummy; 590 } 591 *inp = RU(pp)->ru_inblock - RU(oldp)->ru_inblock; 592 *oup = RU(pp)->ru_oublock - RU(oldp)->ru_oublock; 593 *flp = RU(pp)->ru_majflt - RU(oldp)->ru_majflt; 594 *vcsw = RU(pp)->ru_nvcsw - RU(oldp)->ru_nvcsw; 595 *ivcsw = RU(pp)->ru_nivcsw - RU(oldp)->ru_nivcsw; 596 ret = 597 (RU(pp)->ru_inblock - RU(oldp)->ru_inblock) + 598 (RU(pp)->ru_oublock - RU(oldp)->ru_oublock) + 599 (RU(pp)->ru_majflt - RU(oldp)->ru_majflt); 600 return (ret); 601} 602 603/* 604 * Return the total number of block in/out and faults by a process. 605 */ 606long 607get_io_total(struct kinfo_proc *pp) 608{ 609 long dummy; 610 611 return (get_io_stats(pp, &dummy, &dummy, &dummy, &dummy, &dummy)); 612} 613 614static struct handle handle; 615 616caddr_t 617get_process_info(struct system_info *si, struct process_select *sel, 618 int (*compare)(const void *, const void *)) 619{ 620 int i; 621 int total_procs; 622 long p_io; 623 long p_inblock, p_oublock, p_majflt, p_vcsw, p_ivcsw; 624 int active_procs; 625 struct kinfo_proc **prefp; 626 struct kinfo_proc *pp; 627 628 /* these are copied out of sel for speed */ 629 int show_idle; 630 int show_self; 631 int show_system; 632 int show_uid; 633 int show_command; 634 int show_kidle; 635 636 /* 637 * Save the previous process info. 638 */ 639 if (previous_proc_count_max < nproc) { 640 free(previous_procs); 641 previous_procs = malloc(nproc * sizeof(*previous_procs)); 642 free(previous_pref); 643 previous_pref = malloc(nproc * sizeof(*previous_pref)); 644 if (previous_procs == NULL || previous_pref == NULL) { 645 (void) fprintf(stderr, "top: Out of memory.\n"); 646 quit(23); 647 } 648 previous_proc_count_max = nproc; 649 } 650 if (nproc) { 651 for (i = 0; i < nproc; i++) 652 previous_pref[i] = &previous_procs[i]; 653 bcopy(pbase, previous_procs, nproc * sizeof(*previous_procs)); 654 qsort(previous_pref, nproc, sizeof(*previous_pref), 655 compare_pid); 656 } 657 previous_proc_count = nproc; 658 659 pbase = kvm_getprocs(kd, sel->thread ? KERN_PROC_ALL : KERN_PROC_PROC, 660 0, &nproc); 661 if (nproc > onproc) 662 pref = realloc(pref, sizeof(*pref) * (onproc = nproc)); 663 if (pref == NULL || pbase == NULL) { 664 (void) fprintf(stderr, "top: Out of memory.\n"); 665 quit(23); 666 } 667 /* get a pointer to the states summary array */ 668 si->procstates = process_states; 669 670 /* set up flags which define what we are going to select */ 671 show_idle = sel->idle; 672 show_self = sel->self == -1; 673 show_system = sel->system; 674 show_uid = sel->uid != -1; 675 show_command = sel->command != NULL; 676 show_kidle = sel->kidle; 677 678 /* count up process states and get pointers to interesting procs */ 679 total_procs = 0; 680 active_procs = 0; 681 total_inblock = 0; 682 total_oublock = 0; 683 total_majflt = 0; 684 memset((char *)process_states, 0, sizeof(process_states)); 685 prefp = pref; 686 for (pp = pbase, i = 0; i < nproc; pp++, i++) { 687 688 if (pp->ki_stat == 0) 689 /* not in use */ 690 continue; 691 692 if (!show_self && pp->ki_pid == sel->self) 693 /* skip self */ 694 continue; 695 696 if (!show_system && (pp->ki_flag & P_SYSTEM)) 697 /* skip system process */ 698 continue; 699 700 p_io = get_io_stats(pp, &p_inblock, &p_oublock, &p_majflt, 701 &p_vcsw, &p_ivcsw); 702 total_inblock += p_inblock; 703 total_oublock += p_oublock; 704 total_majflt += p_majflt; 705 total_procs++; 706 process_states[pp->ki_stat]++; 707 708 if (pp->ki_stat == SZOMB) 709 /* skip zombies */ 710 continue; 711 712 if (!show_kidle && pp->ki_tdflags & TDF_IDLETD) 713 /* skip kernel idle process */ 714 continue; 715 716 if (displaymode == DISP_CPU && !show_idle && 717 (pp->ki_pctcpu == 0 || 718 pp->ki_stat == SSTOP || pp->ki_stat == SIDL)) 719 /* skip idle or non-running processes */ 720 continue; 721 722 if (displaymode == DISP_IO && !show_idle && p_io == 0) 723 /* skip processes that aren't doing I/O */ 724 continue; 725 726 if (show_uid && pp->ki_ruid != (uid_t)sel->uid) 727 /* skip proc. that don't belong to the selected UID */ 728 continue; 729 730 *prefp++ = pp; 731 active_procs++; 732 } 733 734 /* if requested, sort the "interesting" processes */ 735 if (compare != NULL) 736 qsort(pref, active_procs, sizeof(*pref), compare); 737 738 /* remember active and total counts */ 739 si->p_total = total_procs; 740 si->p_active = pref_len = active_procs; 741 742 /* pass back a handle */ 743 handle.next_proc = pref; 744 handle.remaining = active_procs; 745 return ((caddr_t)&handle); 746} 747 748static char fmt[128]; /* static area where result is built */ 749 750char * 751format_next_process(caddr_t handle, char *(*get_userid)(int), int flags) 752{ 753 struct kinfo_proc *pp; 754 const struct kinfo_proc *oldp; 755 long cputime; 756 double pct; 757 struct handle *hp; 758 char status[16]; 759 int state; 760 struct rusage ru, *rup; 761 long p_tot, s_tot; 762 char *proc_fmt, thr_buf[6], jid_buf[6]; 763 char *cmdbuf = NULL; 764 char **args; 765 766 /* find and remember the next proc structure */ 767 hp = (struct handle *)handle; 768 pp = *(hp->next_proc++); 769 hp->remaining--; 770 771 /* get the process's command name */ 772 if ((pp->ki_flag & P_INMEM) == 0) { 773 /* 774 * Print swapped processes as <pname> 775 */ 776 size_t len; 777 778 len = strlen(pp->ki_comm); 779 if (len > sizeof(pp->ki_comm) - 3) 780 len = sizeof(pp->ki_comm) - 3; 781 memmove(pp->ki_comm + 1, pp->ki_comm, len); 782 pp->ki_comm[0] = '<'; 783 pp->ki_comm[len + 1] = '>'; 784 pp->ki_comm[len + 2] = '\0'; 785 } 786 787 /* 788 * Convert the process's runtime from microseconds to seconds. This 789 * time includes the interrupt time although that is not wanted here. 790 * ps(1) is similarly sloppy. 791 */ 792 cputime = (pp->ki_runtime + 500000) / 1000000; 793 794 /* calculate the base for cpu percentages */ 795 pct = pctdouble(pp->ki_pctcpu); 796 797 /* generate "STATE" field */ 798 switch (state = pp->ki_stat) { 799 case SRUN: 800 if (smpmode && pp->ki_oncpu != 0xff) 801 sprintf(status, "CPU%d", pp->ki_oncpu); 802 else 803 strcpy(status, "RUN"); 804 break; 805 case SLOCK: 806 if (pp->ki_kiflag & KI_LOCKBLOCK) { 807 sprintf(status, "*%.6s", pp->ki_lockname); 808 break; 809 } 810 /* fall through */ 811 case SSLEEP: 812 if (pp->ki_wmesg != NULL) { 813 sprintf(status, "%.6s", pp->ki_wmesg); 814 break; 815 } 816 /* FALLTHROUGH */ 817 default: 818 819 if (state >= 0 && 820 state < sizeof(state_abbrev) / sizeof(*state_abbrev)) 821 sprintf(status, "%.6s", state_abbrev[state]); 822 else 823 sprintf(status, "?%5d", state); 824 break; 825 } 826 827 cmdbuf = (char *)malloc(cmdlengthdelta + 1); 828 if (cmdbuf == NULL) { 829 warn("malloc(%d)", cmdlengthdelta + 1); 830 return NULL; 831 } 832 833 if (!(flags & FMT_SHOWARGS)) { 834 if (ps.thread && pp->ki_flag & P_HADTHREADS && 835 pp->ki_ocomm[0]) { 836 snprintf(cmdbuf, cmdlengthdelta, "{%s}", pp->ki_ocomm); 837 } else { 838 snprintf(cmdbuf, cmdlengthdelta, "%s", pp->ki_comm); 839 } 840 } else { 841 if (pp->ki_flag & P_SYSTEM || 842 pp->ki_args == NULL || 843 (args = kvm_getargv(kd, pp, cmdlengthdelta)) == NULL || 844 !(*args)) { 845 if (ps.thread && pp->ki_flag & P_HADTHREADS && 846 pp->ki_ocomm[0]) { 847 snprintf(cmdbuf, cmdlengthdelta, 848 "{%s}", pp->ki_ocomm); 849 } else { 850 snprintf(cmdbuf, cmdlengthdelta, 851 "[%s]", pp->ki_comm); 852 } 853 } else { 854 char *src, *dst, *argbuf; 855 char *cmd; 856 size_t argbuflen; 857 size_t len; 858 859 argbuflen = cmdlengthdelta * 4; 860 argbuf = (char *)malloc(argbuflen + 1); 861 if (argbuf == NULL) { 862 warn("malloc(%d)", argbuflen + 1); 863 free(cmdbuf); 864 return NULL; 865 } 866 867 dst = argbuf; 868 869 /* Extract cmd name from argv */ 870 cmd = strrchr(*args, '/'); 871 if (cmd == NULL) 872 cmd = *args; 873 else 874 cmd++; 875 876 for (; (src = *args++) != NULL; ) { 877 if (*src == '\0') 878 continue; 879 len = (argbuflen - (dst - argbuf) - 1) / 4; 880 strvisx(dst, src, 881 strlen(src) < len ? strlen(src) : len, 882 VIS_NL | VIS_CSTYLE); 883 while (*dst != '\0') 884 dst++; 885 if ((argbuflen - (dst - argbuf) - 1) / 4 > 0) 886 *dst++ = ' '; /* add delimiting space */ 887 } 888 if (dst != argbuf && dst[-1] == ' ') 889 dst--; 890 *dst = '\0'; 891 892 if (strcmp(cmd, pp->ki_comm) != 0 ) 893 snprintf(cmdbuf, cmdlengthdelta, 894 "%s (%s)",argbuf, pp->ki_comm); 895 else 896 strlcpy(cmdbuf, argbuf, cmdlengthdelta); 897 898 free(argbuf); 899 } 900 } 901 902 if (ps.jail == 0) 903 jid_buf[0] = '\0'; 904 else 905 snprintf(jid_buf, sizeof(jid_buf), " %*d", 906 sizeof(jid_buf) - 3, pp->ki_jid); 907 908 if (displaymode == DISP_IO) { 909 oldp = get_old_proc(pp); 910 if (oldp != NULL) { 911 ru.ru_inblock = RU(pp)->ru_inblock - 912 RU(oldp)->ru_inblock; 913 ru.ru_oublock = RU(pp)->ru_oublock - 914 RU(oldp)->ru_oublock; 915 ru.ru_majflt = RU(pp)->ru_majflt - RU(oldp)->ru_majflt; 916 ru.ru_nvcsw = RU(pp)->ru_nvcsw - RU(oldp)->ru_nvcsw; 917 ru.ru_nivcsw = RU(pp)->ru_nivcsw - RU(oldp)->ru_nivcsw; 918 rup = &ru; 919 } else { 920 rup = RU(pp); 921 } 922 p_tot = rup->ru_inblock + rup->ru_oublock + rup->ru_majflt; 923 s_tot = total_inblock + total_oublock + total_majflt; 924 925 sprintf(fmt, io_Proc_format, 926 pp->ki_pid, 927 jid_buf, 928 namelength, namelength, (*get_userid)(pp->ki_ruid), 929 rup->ru_nvcsw, 930 rup->ru_nivcsw, 931 rup->ru_inblock, 932 rup->ru_oublock, 933 rup->ru_majflt, 934 p_tot, 935 s_tot == 0 ? 0.0 : (p_tot * 100.0 / s_tot), 936 screen_width > cmdlengthdelta ? 937 screen_width - cmdlengthdelta : 0, 938 printable(cmdbuf)); 939 940 free(cmdbuf); 941 942 return (fmt); 943 } 944 945 /* format this entry */ 946 proc_fmt = smpmode ? smp_Proc_format : up_Proc_format; 947 if (ps.thread != 0) 948 thr_buf[0] = '\0'; 949 else 950 snprintf(thr_buf, sizeof(thr_buf), "%*d ", 951 sizeof(thr_buf) - 2, pp->ki_numthreads); 952 953 sprintf(fmt, proc_fmt, 954 pp->ki_pid, 955 jid_buf, 956 namelength, namelength, (*get_userid)(pp->ki_ruid), 957 thr_buf, 958 pp->ki_pri.pri_level - PZERO, 959 format_nice(pp), 960 format_k2(PROCSIZE(pp)), 961 format_k2(pagetok(pp->ki_rssize)), 962 status, 963 smpmode ? pp->ki_lastcpu : 0, 964 format_time(cputime), 965 ps.wcpu ? 100.0 * weighted_cpu(pct, pp) : 100.0 * pct, 966 screen_width > cmdlengthdelta ? screen_width - cmdlengthdelta : 0, 967 printable(cmdbuf)); 968 969 free(cmdbuf); 970 971 /* return the result */ 972 return (fmt); 973} 974 975static void 976getsysctl(const char *name, void *ptr, size_t len) 977{ 978 size_t nlen = len; 979 980 if (sysctlbyname(name, ptr, &nlen, NULL, 0) == -1) { 981 fprintf(stderr, "top: sysctl(%s...) failed: %s\n", name, 982 strerror(errno)); 983 quit(23); 984 } 985 if (nlen != len) { 986 fprintf(stderr, "top: sysctl(%s...) expected %lu, got %lu\n", 987 name, (unsigned long)len, (unsigned long)nlen); 988 quit(23); 989 } 990} 991 992static const char * 993format_nice(const struct kinfo_proc *pp) 994{ 995 const char *fifo, *kthread; 996 int rtpri; 997 static char nicebuf[4 + 1]; 998 999 fifo = PRI_NEED_RR(pp->ki_pri.pri_class) ? "" : "F"; 1000 kthread = (pp->ki_flag & P_KTHREAD) ? "k" : ""; 1001 switch (PRI_BASE(pp->ki_pri.pri_class)) { 1002 case PRI_ITHD: 1003 return ("-"); 1004 case PRI_REALTIME: 1005 /* 1006 * XXX: the kernel doesn't tell us the original rtprio and 1007 * doesn't really know what it was, so to recover it we 1008 * must be more chummy with the implementation than the 1009 * implementation is with itself. pri_user gives a 1010 * constant "base" priority, but is only initialized 1011 * properly for user threads. pri_native gives what the 1012 * kernel calls the "base" priority, but it isn't constant 1013 * since it is changed by priority propagation. pri_native 1014 * also isn't properly initialized for all threads, but it 1015 * is properly initialized for kernel realtime and idletime 1016 * threads. Thus we use pri_user for the base priority of 1017 * user threads (it is always correct) and pri_native for 1018 * the base priority of kernel realtime and idletime threads 1019 * (there is nothing better, and it is usually correct). 1020 * 1021 * The field width and thus the buffer are too small for 1022 * values like "kr31F", but such values shouldn't occur, 1023 * and if they do then the tailing "F" is not displayed. 1024 */ 1025 rtpri = ((pp->ki_flag & P_KTHREAD) ? pp->ki_pri.pri_native : 1026 pp->ki_pri.pri_user) - PRI_MIN_REALTIME; 1027 snprintf(nicebuf, sizeof(nicebuf), "%sr%d%s", 1028 kthread, rtpri, fifo); 1029 break; 1030 case PRI_TIMESHARE: 1031 if (pp->ki_flag & P_KTHREAD) 1032 return ("-"); 1033 snprintf(nicebuf, sizeof(nicebuf), "%d", pp->ki_nice - NZERO); 1034 break; 1035 case PRI_IDLE: 1036 /* XXX: as above. */ 1037 rtpri = ((pp->ki_flag & P_KTHREAD) ? pp->ki_pri.pri_native : 1038 pp->ki_pri.pri_user) - PRI_MIN_IDLE; 1039 snprintf(nicebuf, sizeof(nicebuf), "%si%d%s", 1040 kthread, rtpri, fifo); 1041 break; 1042 default: 1043 return ("?"); 1044 } 1045 return (nicebuf); 1046} 1047 1048/* comparison routines for qsort */ 1049 1050static int 1051compare_pid(const void *p1, const void *p2) 1052{ 1053 const struct kinfo_proc * const *pp1 = p1; 1054 const struct kinfo_proc * const *pp2 = p2; 1055 1056 if ((*pp2)->ki_pid < 0 || (*pp1)->ki_pid < 0) 1057 abort(); 1058 1059 return ((*pp1)->ki_pid - (*pp2)->ki_pid); 1060} 1061 1062/* 1063 * proc_compare - comparison function for "qsort" 1064 * Compares the resource consumption of two processes using five 1065 * distinct keys. The keys (in descending order of importance) are: 1066 * percent cpu, cpu ticks, state, resident set size, total virtual 1067 * memory usage. The process states are ordered as follows (from least 1068 * to most important): WAIT, zombie, sleep, stop, start, run. The 1069 * array declaration below maps a process state index into a number 1070 * that reflects this ordering. 1071 */ 1072 1073static int sorted_state[] = { 1074 0, /* not used */ 1075 3, /* sleep */ 1076 1, /* ABANDONED (WAIT) */ 1077 6, /* run */ 1078 5, /* start */ 1079 2, /* zombie */ 1080 4 /* stop */ 1081}; 1082 1083 1084#define ORDERKEY_PCTCPU(a, b) do { \ 1085 long diff; \ 1086 if (ps.wcpu) \ 1087 diff = floor(1.0E6 * weighted_cpu(pctdouble((b)->ki_pctcpu), \ 1088 (b))) - \ 1089 floor(1.0E6 * weighted_cpu(pctdouble((a)->ki_pctcpu), \ 1090 (a))); \ 1091 else \ 1092 diff = (long)(b)->ki_pctcpu - (long)(a)->ki_pctcpu; \ 1093 if (diff != 0) \ 1094 return (diff > 0 ? 1 : -1); \ 1095} while (0) 1096 1097#define ORDERKEY_CPTICKS(a, b) do { \ 1098 int64_t diff = (int64_t)(b)->ki_runtime - (int64_t)(a)->ki_runtime; \ 1099 if (diff != 0) \ 1100 return (diff > 0 ? 1 : -1); \ 1101} while (0) 1102 1103#define ORDERKEY_STATE(a, b) do { \ 1104 int diff = sorted_state[(b)->ki_stat] - sorted_state[(a)->ki_stat]; \ 1105 if (diff != 0) \ 1106 return (diff > 0 ? 1 : -1); \ 1107} while (0) 1108 1109#define ORDERKEY_PRIO(a, b) do { \ 1110 int diff = (int)(b)->ki_pri.pri_level - (int)(a)->ki_pri.pri_level; \ 1111 if (diff != 0) \ 1112 return (diff > 0 ? 1 : -1); \ 1113} while (0) 1114 1115#define ORDERKEY_THREADS(a, b) do { \ 1116 int diff = (int)(b)->ki_numthreads - (int)(a)->ki_numthreads; \ 1117 if (diff != 0) \ 1118 return (diff > 0 ? 1 : -1); \ 1119} while (0) 1120 1121#define ORDERKEY_RSSIZE(a, b) do { \ 1122 long diff = (long)(b)->ki_rssize - (long)(a)->ki_rssize; \ 1123 if (diff != 0) \ 1124 return (diff > 0 ? 1 : -1); \ 1125} while (0) 1126 1127#define ORDERKEY_MEM(a, b) do { \ 1128 long diff = (long)PROCSIZE((b)) - (long)PROCSIZE((a)); \ 1129 if (diff != 0) \ 1130 return (diff > 0 ? 1 : -1); \ 1131} while (0) 1132 1133#define ORDERKEY_JID(a, b) do { \ 1134 int diff = (int)(b)->ki_jid - (int)(a)->ki_jid; \ 1135 if (diff != 0) \ 1136 return (diff > 0 ? 1 : -1); \ 1137} while (0) 1138 1139/* compare_cpu - the comparison function for sorting by cpu percentage */ 1140 1141int 1142#ifdef ORDER 1143compare_cpu(void *arg1, void *arg2) 1144#else 1145proc_compare(void *arg1, void *arg2) 1146#endif 1147{ 1148 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1149 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1150 1151 ORDERKEY_PCTCPU(p1, p2); 1152 ORDERKEY_CPTICKS(p1, p2); 1153 ORDERKEY_STATE(p1, p2); 1154 ORDERKEY_PRIO(p1, p2); 1155 ORDERKEY_RSSIZE(p1, p2); 1156 ORDERKEY_MEM(p1, p2); 1157 1158 return (0); 1159} 1160 1161#ifdef ORDER 1162/* "cpu" compare routines */ 1163int compare_size(), compare_res(), compare_time(), compare_prio(), 1164 compare_threads(); 1165 1166/* 1167 * "io" compare routines. Context switches aren't i/o, but are displayed 1168 * on the "io" display. 1169 */ 1170int compare_iototal(), compare_ioread(), compare_iowrite(), compare_iofault(), 1171 compare_vcsw(), compare_ivcsw(); 1172 1173int (*compares[])() = { 1174 compare_cpu, 1175 compare_size, 1176 compare_res, 1177 compare_time, 1178 compare_prio, 1179 compare_threads, 1180 compare_iototal, 1181 compare_ioread, 1182 compare_iowrite, 1183 compare_iofault, 1184 compare_vcsw, 1185 compare_ivcsw, 1186 compare_jid, 1187 NULL 1188}; 1189 1190/* compare_size - the comparison function for sorting by total memory usage */ 1191 1192int 1193compare_size(void *arg1, void *arg2) 1194{ 1195 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1196 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1197 1198 ORDERKEY_MEM(p1, p2); 1199 ORDERKEY_RSSIZE(p1, p2); 1200 ORDERKEY_PCTCPU(p1, p2); 1201 ORDERKEY_CPTICKS(p1, p2); 1202 ORDERKEY_STATE(p1, p2); 1203 ORDERKEY_PRIO(p1, p2); 1204 1205 return (0); 1206} 1207 1208/* compare_res - the comparison function for sorting by resident set size */ 1209 1210int 1211compare_res(void *arg1, void *arg2) 1212{ 1213 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1214 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1215 1216 ORDERKEY_RSSIZE(p1, p2); 1217 ORDERKEY_MEM(p1, p2); 1218 ORDERKEY_PCTCPU(p1, p2); 1219 ORDERKEY_CPTICKS(p1, p2); 1220 ORDERKEY_STATE(p1, p2); 1221 ORDERKEY_PRIO(p1, p2); 1222 1223 return (0); 1224} 1225 1226/* compare_time - the comparison function for sorting by total cpu time */ 1227 1228int 1229compare_time(void *arg1, void *arg2) 1230{ 1231 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1232 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1233 1234 ORDERKEY_CPTICKS(p1, p2); 1235 ORDERKEY_PCTCPU(p1, p2); 1236 ORDERKEY_STATE(p1, p2); 1237 ORDERKEY_PRIO(p1, p2); 1238 ORDERKEY_RSSIZE(p1, p2); 1239 ORDERKEY_MEM(p1, p2); 1240 1241 return (0); 1242} 1243 1244/* compare_prio - the comparison function for sorting by priority */ 1245 1246int 1247compare_prio(void *arg1, void *arg2) 1248{ 1249 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1250 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1251 1252 ORDERKEY_PRIO(p1, p2); 1253 ORDERKEY_CPTICKS(p1, p2); 1254 ORDERKEY_PCTCPU(p1, p2); 1255 ORDERKEY_STATE(p1, p2); 1256 ORDERKEY_RSSIZE(p1, p2); 1257 ORDERKEY_MEM(p1, p2); 1258 1259 return (0); 1260} 1261 1262/* compare_threads - the comparison function for sorting by threads */ 1263int 1264compare_threads(void *arg1, void *arg2) 1265{ 1266 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1267 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1268 1269 ORDERKEY_THREADS(p1, p2); 1270 ORDERKEY_PCTCPU(p1, p2); 1271 ORDERKEY_CPTICKS(p1, p2); 1272 ORDERKEY_STATE(p1, p2); 1273 ORDERKEY_PRIO(p1, p2); 1274 ORDERKEY_RSSIZE(p1, p2); 1275 ORDERKEY_MEM(p1, p2); 1276 1277 return (0); 1278} 1279 1280/* compare_jid - the comparison function for sorting by jid */ 1281static int 1282compare_jid(const void *arg1, const void *arg2) 1283{ 1284 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1285 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1286 1287 ORDERKEY_JID(p1, p2); 1288 ORDERKEY_PCTCPU(p1, p2); 1289 ORDERKEY_CPTICKS(p1, p2); 1290 ORDERKEY_STATE(p1, p2); 1291 ORDERKEY_PRIO(p1, p2); 1292 ORDERKEY_RSSIZE(p1, p2); 1293 ORDERKEY_MEM(p1, p2); 1294 1295 return (0); 1296} 1297#endif /* ORDER */ 1298 1299/* assorted comparison functions for sorting by i/o */ 1300 1301int 1302#ifdef ORDER 1303compare_iototal(void *arg1, void *arg2) 1304#else 1305io_compare(void *arg1, void *arg2) 1306#endif 1307{ 1308 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1309 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1310 1311 return (get_io_total(p2) - get_io_total(p1)); 1312} 1313 1314#ifdef ORDER 1315int 1316compare_ioread(void *arg1, void *arg2) 1317{ 1318 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1319 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1320 long dummy, inp1, inp2; 1321 1322 (void) get_io_stats(p1, &inp1, &dummy, &dummy, &dummy, &dummy); 1323 (void) get_io_stats(p2, &inp2, &dummy, &dummy, &dummy, &dummy); 1324 1325 return (inp2 - inp1); 1326} 1327 1328int 1329compare_iowrite(void *arg1, void *arg2) 1330{ 1331 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1332 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1333 long dummy, oup1, oup2; 1334 1335 (void) get_io_stats(p1, &dummy, &oup1, &dummy, &dummy, &dummy); 1336 (void) get_io_stats(p2, &dummy, &oup2, &dummy, &dummy, &dummy); 1337 1338 return (oup2 - oup1); 1339} 1340 1341int 1342compare_iofault(void *arg1, void *arg2) 1343{ 1344 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1345 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1346 long dummy, flp1, flp2; 1347 1348 (void) get_io_stats(p1, &dummy, &dummy, &flp1, &dummy, &dummy); 1349 (void) get_io_stats(p2, &dummy, &dummy, &flp2, &dummy, &dummy); 1350 1351 return (flp2 - flp1); 1352} 1353 1354int 1355compare_vcsw(void *arg1, void *arg2) 1356{ 1357 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1358 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1359 long dummy, flp1, flp2; 1360 1361 (void) get_io_stats(p1, &dummy, &dummy, &dummy, &flp1, &dummy); 1362 (void) get_io_stats(p2, &dummy, &dummy, &dummy, &flp2, &dummy); 1363 1364 return (flp2 - flp1); 1365} 1366 1367int 1368compare_ivcsw(void *arg1, void *arg2) 1369{ 1370 struct kinfo_proc *p1 = *(struct kinfo_proc **)arg1; 1371 struct kinfo_proc *p2 = *(struct kinfo_proc **)arg2; 1372 long dummy, flp1, flp2; 1373 1374 (void) get_io_stats(p1, &dummy, &dummy, &dummy, &dummy, &flp1); 1375 (void) get_io_stats(p2, &dummy, &dummy, &dummy, &dummy, &flp2); 1376 1377 return (flp2 - flp1); 1378} 1379#endif /* ORDER */ 1380 1381/* 1382 * proc_owner(pid) - returns the uid that owns process "pid", or -1 if 1383 * the process does not exist. 1384 * It is EXTREMLY IMPORTANT that this function work correctly. 1385 * If top runs setuid root (as in SVR4), then this function 1386 * is the only thing that stands in the way of a serious 1387 * security problem. It validates requests for the "kill" 1388 * and "renice" commands. 1389 */ 1390 1391int 1392proc_owner(int pid) 1393{ 1394 int cnt; 1395 struct kinfo_proc **prefp; 1396 struct kinfo_proc *pp; 1397 1398 prefp = pref; 1399 cnt = pref_len; 1400 while (--cnt >= 0) { 1401 pp = *prefp++; 1402 if (pp->ki_pid == (pid_t)pid) 1403 return ((int)pp->ki_ruid); 1404 } 1405 return (-1); 1406} 1407 1408static int 1409swapmode(int *retavail, int *retfree) 1410{ 1411 int n; 1412 int pagesize = getpagesize(); 1413 struct kvm_swap swapary[1]; 1414 1415 *retavail = 0; 1416 *retfree = 0; 1417 1418#define CONVERT(v) ((quad_t)(v) * pagesize / 1024) 1419 1420 n = kvm_getswapinfo(kd, swapary, 1, 0); 1421 if (n < 0 || swapary[0].ksw_total == 0) 1422 return (0); 1423 1424 *retavail = CONVERT(swapary[0].ksw_total); 1425 *retfree = CONVERT(swapary[0].ksw_total - swapary[0].ksw_used); 1426 1427 n = (int)(swapary[0].ksw_used * 100.0 / swapary[0].ksw_total); 1428 return (n); 1429} 1430