1 /*- 2 * Top users/processes display for Unix 3 * 4 * This program may be freely redistributed, 5 * but this entire comment MUST remain intact. 6 * 7 * Copyright (c) 1984, 1989, William LeFebvre, Rice University 8 * Copyright (c) 1989 - 1994, William LeFebvre, Northwestern University 9 * Copyright (c) 1994, 1995, William LeFebvre, Argonne National Laboratory 10 * Copyright (c) 1996, William LeFebvre, Group sys Consulting 11 */ 12 13 #include <sys/types.h> 14 #include <sys/time.h> 15 #include <sys/cdefs.h> 16 #include <sys/limits.h> 17 #include <sys/resource.h> 18 #include <sys/select.h> 19 #include <sys/signal.h> 20 21 #include <assert.h> 22 #include <err.h> 23 #include <errno.h> 24 #include <getopt.h> 25 #include <jail.h> 26 #include <locale.h> 27 #include <stdbool.h> 28 #include <stdio.h> 29 #include <stdlib.h> 30 #include <signal.h> 31 #include <string.h> 32 #include <unistd.h> 33 34 #include "commands.h" 35 #include "display.h" /* interface to display package */ 36 #include "screen.h" /* interface to screen package */ 37 #include "top.h" 38 #include "machine.h" 39 #include "utils.h" 40 #include "username.h" 41 42 /* Size of the stdio buffer given to stdout */ 43 #define Buffersize 2048 44 45 char copyright[] = 46 "Copyright (c) 1984 through 1996, William LeFebvre"; 47 48 typedef void sigret_t; 49 50 /* The buffer that stdio will use */ 51 static char stdoutbuf[Buffersize]; 52 53 static int fmt_flags = 0; 54 int show_args = false; 55 int pcpu_stats = false; 56 57 /* signal handling routines */ 58 static sigret_t leave(int); 59 static sigret_t tstop(int); 60 static sigret_t top_winch(int); 61 62 static volatile sig_atomic_t leaveflag; 63 static volatile sig_atomic_t tstopflag; 64 static volatile sig_atomic_t winchflag; 65 66 /* values which need to be accessed by signal handlers */ 67 static int max_topn; /* maximum displayable processes */ 68 69 /* miscellaneous things */ 70 struct process_select ps; 71 pid_t mypid; 72 73 /* pointers to display routines */ 74 static void (*d_loadave)(int mpid, double *avenrun) = i_loadave; 75 static void (*d_procstates)(int total, int *brkdn) = i_procstates; 76 static void (*d_cpustates)(int *states) = i_cpustates; 77 static void (*d_memory)(int *stats) = i_memory; 78 static void (*d_arc)(int *stats) = i_arc; 79 static void (*d_carc)(int *stats) = i_carc; 80 static void (*d_swap)(int *stats) = i_swap; 81 static void (*d_message)(void) = i_message; 82 static void (*d_header)(const char *text) = i_header; 83 static void (*d_process)(int line, char *thisline) = i_process; 84 85 static void reset_display(void); 86 87 static const struct option longopts[] = { 88 { "cpu-display-mode", no_argument, NULL, 'C' }, /* differs from orignal */ 89 /* D reserved */ 90 { "thread", no_argument, NULL, 'H' }, 91 { "idle-procs", no_argument, NULL, 'I' }, 92 { "jail", required_argument, NULL, 'J' }, 93 { "per-cpu", no_argument, NULL, 'P' }, 94 { "system-procs", no_argument, NULL, 'S' }, 95 { "thread-id", no_argument, NULL, 'T' }, /* differs from orignal */ 96 { "user", required_argument, NULL, 'U' }, 97 { "all", no_argument, NULL, 'a' }, 98 { "batch", no_argument, NULL, 'b' }, 99 /* c reserved */ 100 { "displays", required_argument, NULL, 'd' }, 101 { "interactive", no_argument, NULL, 'i' }, 102 { "jail-id", no_argument, NULL, 'j' }, 103 { "display-mode", required_argument, NULL, 'm' }, 104 /* n is identical to batch */ 105 { "sort-order", required_argument, NULL, 'o' }, 106 { "pid", required_argument, NULL, 'p' }, 107 { "quick", no_argument, NULL, 'q' }, 108 { "delay", required_argument, NULL, 's' }, 109 { "threads", no_argument, NULL, 't' }, 110 { "uids", no_argument, NULL, 'u' }, 111 { "version", no_argument, NULL, 'v' }, 112 { "swap", no_argument, NULL, 'w' }, 113 { "system-idle-procs", no_argument, NULL, 'z' }, 114 { NULL, 0, NULL, 0 } 115 }; 116 117 static void 118 reset_uids(void) 119 { 120 for (size_t i = 0; i < TOP_MAX_UIDS; ++i) 121 ps.uid[i] = -1; 122 } 123 124 static int 125 add_uid(int uid) 126 { 127 size_t i = 0; 128 129 /* Add the uid if there's room */ 130 for (; i < TOP_MAX_UIDS; ++i) 131 { 132 if (ps.uid[i] == -1 || ps.uid[i] == uid) 133 { 134 ps.uid[i] = uid; 135 break; 136 } 137 } 138 139 return (i == TOP_MAX_UIDS); 140 } 141 142 static void 143 rem_uid(int uid) 144 { 145 size_t i = 0; 146 size_t where = TOP_MAX_UIDS; 147 148 /* Look for the user to remove - no problem if it's not there */ 149 for (; i < TOP_MAX_UIDS; ++i) 150 { 151 if (ps.uid[i] == -1) 152 break; 153 if (ps.uid[i] == uid) 154 where = i; 155 } 156 157 /* Make sure we don't leave a hole in the middle */ 158 if (where != TOP_MAX_UIDS) 159 { 160 ps.uid[where] = ps.uid[i-1]; 161 ps.uid[i-1] = -1; 162 } 163 } 164 165 static int 166 handle_user(char *buf, size_t buflen) 167 { 168 int rc = 0; 169 int uid = -1; 170 char *buf2 = buf; 171 172 new_message(MT_standout, "Username to show (+ for all): "); 173 if (readline(buf, buflen, false) <= 0) 174 { 175 clear_message(); 176 return (rc); 177 } 178 179 if (buf[0] == '+' || buf[0] == '-') 180 { 181 if (buf[1] == '\0') 182 { 183 reset_uids(); 184 goto end; 185 } 186 else 187 ++buf2; 188 } 189 190 if ((uid = userid(buf2)) == -1) 191 { 192 new_message(MT_standout, " %s: unknown user", buf2); 193 rc = 1; 194 goto end; 195 } 196 197 if (buf2 == buf) 198 { 199 reset_uids(); 200 ps.uid[0] = uid; 201 goto end; 202 } 203 204 if (buf[0] == '+') 205 { 206 if (add_uid(uid)) 207 { 208 new_message(MT_standout, " too many users, reset with '+'"); 209 rc = 1; 210 goto end; 211 } 212 } 213 else 214 rem_uid(uid); 215 216 end: 217 putchar('\r'); 218 return (rc); 219 } 220 221 int 222 main(int argc, const char *argv[]) 223 { 224 int i; 225 int active_procs; 226 227 struct system_info system_info; 228 struct statics statics; 229 void * processes; 230 231 static char tempbuf1[50]; 232 static char tempbuf2[50]; 233 sigset_t old_sigmask, new_sigmask; 234 int topn = Infinity; 235 struct timeval delay = { 2, 0 }; 236 int displays = 0; /* indicates unspecified */ 237 int sel_ret = 0; 238 time_t curr_time; 239 char *(*get_userid)(int) = username; 240 const char *uname_field = "USERNAME"; 241 const char *header_text; 242 char *env_top; 243 const char **preset_argv; 244 int preset_argc = 0; 245 const char **av = NULL; 246 int ac = -1; 247 bool do_unames = true; 248 char interactive = 2; 249 char warnings = 0; 250 char topn_specified = false; 251 char ch; 252 char no_command = 1; 253 struct timeval timeout; 254 char *order_name = NULL; 255 const struct sort_info *sort_info = NULL; 256 fd_set readfds; 257 char *nptr; 258 259 /* set the buffer for stdout */ 260 #ifdef DEBUG 261 extern FILE *debug; 262 debug = fopen("debug.run", "w"); 263 setbuffer(stdout, NULL, 0); 264 #else 265 setbuffer(stdout, stdoutbuf, Buffersize); 266 #endif 267 268 if (setlocale(LC_ALL, "") == NULL) { 269 warnx("invalid locale, check your environment"); 270 sleep(2); 271 } 272 273 mypid = getpid(); 274 275 /* get our name */ 276 /* initialize some selection options */ 277 ps.idle = true; 278 ps.self = true; 279 ps.system = false; 280 reset_uids(); 281 ps.thread = false; 282 ps.wcpu = 1; 283 ps.jid = -1; 284 ps.jail = false; 285 ps.swap = false; 286 ps.kidle = true; 287 ps.pid = -1; 288 ps.command = NULL; 289 ps.thread_id = false; 290 291 /* get preset options from the environment */ 292 if ((env_top = getenv("TOP")) != NULL) 293 { 294 av = preset_argv = argparse(env_top, &preset_argc); 295 ac = preset_argc; 296 297 /* set the dummy argument to an explanatory message, in case 298 getopt encounters a bad argument */ 299 preset_argv[0] = "while processing environment"; 300 } 301 302 /* process options */ 303 do { 304 /* if we're done doing the presets, then process the real arguments */ 305 if (preset_argc == 0) 306 { 307 ac = argc; 308 av = argv; 309 310 /* this should keep getopt happy... */ 311 optind = 1; 312 } 313 314 while ((i = getopt_long(ac, __DECONST(char * const *, av), "CSIHPabijJ:nquvzs:d:U:m:o:p:Ttw", longopts, NULL)) != EOF) 315 { 316 switch(i) 317 { 318 case 'v': /* show version number */ 319 errx(0, "version FreeBSD"); 320 break; 321 322 case 'u': /* toggle uid/username display */ 323 do_unames = !do_unames; 324 break; 325 326 case 'U': /* display only username's processes */ 327 if ((ps.uid[0] = userid(optarg)) == -1) 328 { 329 errx(1, "%s: unknown user\n", optarg); 330 } 331 break; 332 333 case 'S': /* show system processes */ 334 ps.system = true; 335 break; 336 337 case 'I': /* show idle processes */ 338 ps.idle = !ps.idle; 339 break; 340 341 case 'i': /* go interactive regardless */ 342 interactive = 1; 343 break; 344 345 case 'n': /* batch, or non-interactive */ 346 case 'b': 347 interactive = 0; 348 break; 349 350 case 'a': 351 fmt_flags ^= FMT_SHOWARGS; 352 break; 353 354 case 'd': /* number of displays to show */ 355 if ((i = atoiwi(optarg)) == Invalid || i == 0) 356 { 357 warnx("warning: display count should be positive -- option ignored"); 358 warnings++; 359 } 360 else 361 { 362 displays = i; 363 } 364 break; 365 case 'p': { 366 unsigned long long num; 367 const char *errstr; 368 369 num = strtonum(optarg, 0, INT_MAX, &errstr); 370 if (errstr != NULL || !find_pid(num)) { 371 fprintf(stderr, "%s: unknown pid\n", optarg); 372 exit(1); 373 } 374 ps.pid = (pid_t)num; 375 ps.system = true; 376 break; 377 } 378 379 case 's': 380 { 381 double delay_d = strtod(optarg, &nptr); 382 if (nptr == optarg) 383 { 384 warnx("warning: invalid delay"); 385 warnings++; 386 } 387 else if (delay_d <= 0) 388 { 389 warnx("warning: seconds delay should be positive -- using default"); 390 warnings++; 391 } 392 else 393 { 394 delay.tv_sec = delay_d; 395 delay.tv_usec = (delay_d - delay.tv_sec) * 1e6; 396 } 397 break; 398 } 399 400 case 'q': /* be quick about it */ 401 errno = 0; 402 i = setpriority(PRIO_PROCESS, 0, PRIO_MIN); 403 if (i == -1 && errno != 0) { 404 warnx("warning: `-q' option failed (%m)"); 405 warnings++; 406 } 407 break; 408 409 case 'm': /* select display mode */ 410 if (strcmp(optarg, "io") == 0) { 411 displaymode = DISP_IO; 412 } else if (strcmp(optarg, "cpu") == 0) { 413 displaymode = DISP_CPU; 414 } else { 415 errx(1, "warning: `-m' option can only take args 'io' or 'cpu'"); 416 } 417 break; 418 419 case 'o': /* select sort order */ 420 order_name = optarg; 421 break; 422 423 case 't': 424 ps.self = !ps.self; 425 break; 426 427 case 'C': 428 ps.wcpu = !ps.wcpu; 429 break; 430 431 case 'H': 432 ps.thread = !ps.thread; 433 break; 434 435 case 'T': 436 ps.thread_id = !ps.thread_id; 437 break; 438 439 case 'j': 440 ps.jail = !ps.jail; 441 break; 442 443 case 'J': /* display only jail's processes */ 444 if ((ps.jid = jail_getid(optarg)) == -1) 445 { 446 fprintf(stderr, "%s: unknown jail\n", optarg); 447 exit(1); 448 } 449 ps.jail = 1; 450 break; 451 452 case 'P': 453 pcpu_stats = !pcpu_stats; 454 break; 455 456 case 'w': 457 ps.swap = 1; 458 break; 459 460 case 'z': 461 ps.kidle = !ps.kidle; 462 break; 463 464 default: 465 errx(1, 466 "[-abCHIijnPqSTtuvwz] [-d count] [-J jail] [-m cpu | io] [-o field]\n" 467 " [-p pid] [-s time] [-U username] [number]"); 468 } 469 } 470 471 /* get count of top processes to display (if any) */ 472 if (optind < ac) 473 { 474 if ((topn = atoiwi(av[optind])) == Invalid) 475 { 476 warnx("warning: process display count should be non-negative -- using default"); 477 warnings++; 478 } 479 else 480 { 481 topn_specified = true; 482 } 483 } 484 485 /* tricky: remember old value of preset_argc & set preset_argc = 0 */ 486 i = preset_argc; 487 preset_argc = 0; 488 489 /* repeat only if we really did the preset arguments */ 490 } while (i != 0); 491 492 /* set constants for username/uid display correctly */ 493 if (!do_unames) 494 { 495 uname_field = " UID "; 496 get_userid = itoa7; 497 } 498 499 /* initialize the kernel memory interface */ 500 if (machine_init(&statics) == -1) 501 { 502 exit(1); 503 } 504 505 /* determine sorting order index, if necessary */ 506 if (order_name != NULL) 507 { 508 if ((sort_info = get_sort_info(order_name)) == NULL) { 509 warnx("'%s' is not a recognized sorting order.", order_name); 510 fprintf(stderr, "\tTry one of these:"); 511 dump_sort_names(stderr); 512 fputc('\n', stderr); 513 exit(1); 514 } 515 } 516 else 517 { 518 sort_info = get_sort_info(NULL); 519 } 520 521 /* initialize termcap */ 522 init_termcap(interactive); 523 524 /* get the string to use for the process area header */ 525 header_text = format_header(uname_field); 526 527 /* initialize display interface */ 528 if ((max_topn = display_init(&statics)) == -1) 529 { 530 errx(4, "can't allocate sufficient memory"); 531 } 532 533 /* print warning if user requested more processes than we can display */ 534 if (topn > max_topn) 535 { 536 warnx("warning: this terminal can only display %d processes.", max_topn); 537 warnings++; 538 } 539 540 /* adjust for topn == Infinity */ 541 if (topn == Infinity) 542 { 543 /* 544 * For smart terminals, infinity really means everything that can 545 * be displayed, or Largest. 546 * On dumb terminals, infinity means every process in the system! 547 * We only really want to do that if it was explicitly specified. 548 * This is always the case when "Default_TOPN != Infinity". But if 549 * topn wasn't explicitly specified and we are on a dumb terminal 550 * and the default is Infinity, then (and only then) we use 551 * "Nominal_TOPN" instead. 552 */ 553 topn = smart_terminal ? Largest : 554 (topn_specified ? Largest : Nominal_TOPN); 555 } 556 557 /* set header display accordingly */ 558 display_header(topn > 0); 559 560 /* determine interactive state */ 561 if (interactive == 2) 562 { 563 interactive = smart_terminal; 564 } 565 566 /* if # of displays not specified, fill it in */ 567 if (displays == 0) 568 { 569 displays = smart_terminal ? Infinity : 1; 570 } 571 572 /* hold interrupt signals while setting up the screen and the handlers */ 573 574 sigemptyset(&new_sigmask); 575 sigaddset(&new_sigmask, SIGINT); 576 sigaddset(&new_sigmask, SIGQUIT); 577 sigaddset(&new_sigmask, SIGTSTP); 578 sigprocmask(SIG_BLOCK, &new_sigmask, &old_sigmask); 579 init_screen(); 580 signal(SIGINT, leave); 581 signal(SIGQUIT, leave); 582 signal(SIGTSTP, tstop); 583 signal(SIGWINCH, top_winch); 584 sigprocmask(SIG_SETMASK, &old_sigmask, NULL); 585 if (warnings) 586 { 587 fputs("....", stderr); 588 fflush(stderr); 589 sleep(3 * warnings); 590 fputc('\n', stderr); 591 } 592 593 restart: 594 595 /* 596 * main loop -- repeat while display count is positive or while it 597 * indicates infinity (by being -1) 598 */ 599 600 while ((displays == -1) || (displays-- > 0)) 601 { 602 603 /* get the current stats */ 604 get_system_info(&system_info); 605 606 /* get the current set of processes */ 607 processes = 608 get_process_info(&system_info, &ps, sort_info); 609 610 /* display the load averages */ 611 (*d_loadave)(system_info.last_pid, 612 system_info.load_avg); 613 614 /* display the battery info (if any) */ 615 i_battery(statics.nbatteries, system_info.battery); 616 617 /* display the current time */ 618 /* this method of getting the time SHOULD be fairly portable */ 619 time(&curr_time); 620 i_uptime(&system_info.boottime, &curr_time); 621 i_timeofday(&curr_time); 622 623 /* display process state breakdown */ 624 (*d_procstates)(system_info.p_total, 625 system_info.procstates); 626 (*d_cpustates)(system_info.cpustates); 627 628 /* display memory stats */ 629 (*d_memory)(system_info.memory); 630 (*d_arc)(system_info.arc); 631 (*d_carc)(system_info.carc); 632 633 /* display swap stats */ 634 (*d_swap)(system_info.swap); 635 636 /* handle message area */ 637 (*d_message)(); 638 639 /* update the header area */ 640 (*d_header)(header_text); 641 642 if (topn > 0) 643 { 644 /* determine number of processes to actually display */ 645 /* this number will be the smallest of: active processes, 646 number user requested, number current screen accommodates */ 647 active_procs = system_info.p_pactive; 648 if (active_procs > topn) 649 { 650 active_procs = topn; 651 } 652 if (active_procs > max_topn) 653 { 654 active_procs = max_topn; 655 } 656 657 /* now show the top "n" processes. */ 658 for (i = 0; i < active_procs; i++) 659 { 660 (*d_process)(i, format_next_process(processes, get_userid, 661 fmt_flags)); 662 } 663 } 664 else 665 { 666 i = 0; 667 } 668 669 /* do end-screen processing */ 670 u_endscreen(i); 671 672 /* now, flush the output buffer */ 673 if (fflush(stdout) != 0) 674 { 675 new_message(MT_standout, " Write error on stdout"); 676 putchar('\r'); 677 quit(1); 678 } 679 680 /* only do the rest if we have more displays to show */ 681 if (displays) 682 { 683 /* switch out for new display on smart terminals */ 684 if (smart_terminal) 685 { 686 if (overstrike) 687 { 688 reset_display(); 689 } 690 else 691 { 692 d_loadave = u_loadave; 693 d_procstates = u_procstates; 694 d_cpustates = u_cpustates; 695 d_memory = u_memory; 696 d_arc = u_arc; 697 d_carc = u_carc; 698 d_swap = u_swap; 699 d_message = u_message; 700 d_header = u_header; 701 d_process = u_process; 702 } 703 } 704 705 no_command = true; 706 if (!interactive) 707 { 708 timeout = delay; 709 select(0, NULL, NULL, NULL, &timeout); 710 if (leaveflag) { 711 end_screen(); 712 exit(0); 713 } 714 } 715 else while (no_command) 716 { 717 /* assume valid command unless told otherwise */ 718 no_command = false; 719 720 /* set up arguments for select with timeout */ 721 FD_ZERO(&readfds); 722 FD_SET(0, &readfds); /* for standard input */ 723 timeout = delay; 724 725 if (leaveflag) { 726 end_screen(); 727 exit(0); 728 } 729 730 if (tstopflag) { 731 /* move to the lower left */ 732 end_screen(); 733 fflush(stdout); 734 735 /* default the signal handler action */ 736 signal(SIGTSTP, SIG_DFL); 737 738 /* unblock the signal and send ourselves one */ 739 sigsetmask(sigblock(0) & ~(1 << (SIGTSTP - 1))); 740 kill(0, SIGTSTP); 741 742 /* reset the signal handler */ 743 signal(SIGTSTP, tstop); 744 745 /* reinit screen */ 746 reinit_screen(); 747 reset_display(); 748 tstopflag = 0; 749 goto restart; 750 } 751 752 if (winchflag) { 753 /* reascertain the screen dimensions */ 754 get_screensize(); 755 756 /* tell display to resize */ 757 max_topn = display_resize(); 758 759 /* reset the signal handler */ 760 signal(SIGWINCH, top_winch); 761 762 reset_display(); 763 winchflag = 0; 764 goto restart; 765 } 766 767 /* wait for either input or the end of the delay period */ 768 sel_ret = select(2, &readfds, NULL, NULL, &timeout); 769 if (sel_ret < 0 && errno != EINTR) 770 quit(0); 771 if (sel_ret > 0) 772 { 773 int newval; 774 const char *errmsg; 775 const struct command *cptr; 776 777 /* something to read -- clear the message area first */ 778 clear_message(); 779 780 /* now read it and convert to command strchr */ 781 /* (use "change" as a temporary to hold strchr) */ 782 if (read(0, &ch, 1) != 1) 783 { 784 /* read error: either 0 or -1 */ 785 new_message(MT_standout, " Read error on stdin"); 786 putchar('\r'); 787 quit(1); 788 } 789 if (ch == '\r' || ch == '\n') { 790 continue; 791 } 792 cptr = all_commands; 793 while (cptr->c != '\0') { 794 if (cptr->c == ch) { 795 break; 796 } 797 cptr++; 798 } 799 if (cptr->c == '\0') { 800 new_message(MT_standout, " Command not understood"); 801 putchar('\r'); 802 no_command = true; 803 } 804 if (overstrike && !cptr->available_to_dumb) 805 { 806 new_message(MT_standout, 807 " Command cannot be handled by this terminal"); 808 putchar('\r'); 809 no_command = true; 810 } 811 if (!no_command) { 812 switch(cptr->id) 813 { 814 case CMD_redraw: /* redraw screen */ 815 reset_display(); 816 break; 817 818 case CMD_update: /* merely update display */ 819 break; 820 821 case CMD_quit: 822 quit(0); 823 break; 824 825 case CMD_help: 826 reset_display(); 827 top_clear(); 828 show_help(); 829 top_standout("Hit any key to continue: "); 830 fflush(stdout); 831 read(0, &ch, 1); 832 break; 833 834 case CMD_errors: /* show errors */ 835 if (error_count() == 0) 836 { 837 new_message(MT_standout, 838 " Currently no errors to report."); 839 putchar('\r'); 840 no_command = true; 841 } 842 else 843 { 844 reset_display(); 845 top_clear(); 846 show_errors(); 847 top_standout("Hit any key to continue: "); 848 fflush(stdout); 849 read(0, &ch, 1); 850 } 851 break; 852 853 case CMD_number: 854 new_message(MT_standout, 855 "Number of processes to show: "); 856 newval = readline(tempbuf1, 8, true); 857 if (newval > -1) 858 { 859 if (newval > max_topn) 860 { 861 new_message(MT_standout | MT_delayed, 862 " This terminal can only display %d processes.", 863 max_topn); 864 putchar('\r'); 865 } 866 867 if (newval == 0) 868 { 869 /* inhibit the header */ 870 display_header(false); 871 } 872 else if (newval > topn && topn == 0) 873 { 874 /* redraw the header */ 875 display_header(true); 876 d_header = i_header; 877 } 878 topn = newval; 879 } 880 break; 881 882 case CMD_delay: /* new seconds delay */ 883 new_message(MT_standout, "Seconds to delay: "); 884 if ((i = readline(tempbuf1, 8, false)) > 0) 885 { 886 double delay_d = strtod(tempbuf1, &nptr); 887 if (nptr == tempbuf1 || delay_d <= 0) 888 { 889 new_message(MT_standout, " Invalid delay"); 890 putchar('\r'); 891 no_command = true; 892 } 893 else 894 { 895 delay.tv_sec = delay_d; 896 delay.tv_usec = (delay_d - delay.tv_sec) * 1e6; 897 clear_message(); 898 } 899 } 900 break; 901 902 case CMD_grep: /* grep command name */ 903 new_message(MT_standout, 904 "Grep command name (+ for all): "); 905 if (readline(tempbuf1, sizeof(tempbuf1), false) > 0) { 906 free(ps.command); 907 if (tempbuf1[0] == '+' && tempbuf1[1] == '\0') { 908 ps.command = NULL; 909 } else if ((ps.command = strdup(tempbuf1)) == NULL) 910 quit(1); 911 } 912 clear_message(); 913 break; 914 915 case CMD_displays: /* change display count */ 916 new_message(MT_standout, 917 "Displays to show (currently %s): ", 918 displays == -1 ? "infinite" : 919 itoa(displays)); 920 if ((i = readline(tempbuf1, 10, true)) > 0) 921 { 922 displays = i; 923 } 924 else if (i == 0) 925 { 926 quit(0); 927 } 928 clear_message(); 929 break; 930 931 case CMD_kill: /* kill program */ 932 new_message(0, "kill "); 933 if (readline(tempbuf2, sizeof(tempbuf2), false) > 0) 934 { 935 if ((errmsg = kill_procs(tempbuf2)) != NULL) 936 { 937 new_message(MT_standout, "%s", errmsg); 938 putchar('\r'); 939 no_command = true; 940 } 941 } 942 else 943 { 944 clear_message(); 945 } 946 break; 947 948 case CMD_renice: /* renice program */ 949 new_message(0, "renice "); 950 if (readline(tempbuf2, sizeof(tempbuf2), false) > 0) 951 { 952 if ((errmsg = renice_procs(tempbuf2)) != NULL) 953 { 954 new_message(MT_standout, "%s", errmsg); 955 putchar('\r'); 956 no_command = true; 957 } 958 } 959 else 960 { 961 clear_message(); 962 } 963 break; 964 965 case CMD_idletog: 966 ps.idle = !ps.idle; 967 new_message(MT_standout | MT_delayed, 968 " %sisplaying idle processes.", 969 ps.idle ? "D" : "Not d"); 970 putchar('\r'); 971 break; 972 973 case CMD_selftog: 974 ps.self = !ps.self; 975 new_message(MT_standout | MT_delayed, 976 " %sisplaying self.", 977 (ps.self) ? "D" : "Not d"); 978 putchar('\r'); 979 break; 980 981 case CMD_user: 982 if (handle_user(tempbuf2, sizeof(tempbuf2))) 983 no_command = true; 984 break; 985 986 case CMD_thrtog: 987 ps.thread = !ps.thread; 988 new_message(MT_standout | MT_delayed, 989 " Displaying threads %s", 990 ps.thread ? "separately" : "as a count"); 991 header_text = format_header(uname_field); 992 reset_display(); 993 putchar('\r'); 994 break; 995 996 case CMD_toggletid: 997 ps.thread_id = !ps.thread_id; 998 new_message(MT_standout | MT_delayed, 999 " Displaying %s", 1000 ps.thread_id ? "tid" : "pid"); 1001 header_text = format_header(uname_field); 1002 reset_display(); 1003 putchar('\r'); 1004 break; 1005 1006 case CMD_wcputog: 1007 ps.wcpu = !ps.wcpu; 1008 new_message(MT_standout | MT_delayed, 1009 " Displaying %s CPU", 1010 ps.wcpu ? "weighted" : "raw"); 1011 header_text = format_header(uname_field); 1012 reset_display(); 1013 putchar('\r'); 1014 break; 1015 case CMD_viewtog: 1016 displaymode = displaymode == DISP_IO ? DISP_CPU : DISP_IO; 1017 new_message(MT_standout | MT_delayed, 1018 " Displaying %s statistics.", 1019 displaymode == DISP_IO ? "IO" : "CPU"); 1020 header_text = format_header(uname_field); 1021 display_header(true); 1022 d_header = i_header; 1023 reset_display(); 1024 break; 1025 case CMD_viewsys: 1026 ps.system = !ps.system; 1027 new_message(MT_standout | MT_delayed, 1028 " %sisplaying system processes.", 1029 ps.system ? "D" : "Not d"); 1030 break; 1031 case CMD_showargs: 1032 fmt_flags ^= FMT_SHOWARGS; 1033 show_args = fmt_flags & FMT_SHOWARGS; 1034 new_message(MT_standout | MT_delayed, 1035 " %sisplaying process arguments.", 1036 fmt_flags & FMT_SHOWARGS ? "D" : "Not d"); 1037 break; 1038 case CMD_order: 1039 new_message(MT_standout, 1040 "Order to sort: "); 1041 if (readline(tempbuf2, sizeof(tempbuf2), false) > 0) 1042 { 1043 const struct sort_info *new_sort_info; 1044 1045 if ((new_sort_info = get_sort_info(tempbuf2)) == NULL) 1046 { 1047 new_message(MT_standout, 1048 " %s: unrecognized sorting order", tempbuf2); 1049 no_command = true; 1050 } 1051 else 1052 { 1053 sort_info = new_sort_info; 1054 } 1055 putchar('\r'); 1056 } 1057 else 1058 { 1059 clear_message(); 1060 } 1061 break; 1062 case CMD_jidtog: 1063 ps.jail = !ps.jail; 1064 new_message(MT_standout | MT_delayed, 1065 " %sisplaying jail ID.", 1066 ps.jail ? "D" : "Not d"); 1067 header_text = format_header(uname_field); 1068 reset_display(); 1069 putchar('\r'); 1070 break; 1071 1072 case CMD_jail: 1073 new_message(MT_standout, 1074 "Jail to show (+ for all): "); 1075 if (readline(tempbuf2, sizeof(tempbuf2), false) > 0) 1076 { 1077 if (tempbuf2[0] == '+' && 1078 tempbuf2[1] == '\0') 1079 { 1080 ps.jid = -1; 1081 } 1082 else if ((i = jail_getid(tempbuf2)) == -1) 1083 { 1084 new_message(MT_standout, 1085 " %s: unknown jail", tempbuf2); 1086 no_command = true; 1087 } 1088 else 1089 { 1090 ps.jid = i; 1091 } 1092 if (ps.jail == 0) { 1093 ps.jail = 1; 1094 new_message(MT_standout | 1095 MT_delayed, " Displaying jail " 1096 "ID."); 1097 header_text = 1098 format_header(uname_field); 1099 reset_display(); 1100 } 1101 putchar('\r'); 1102 } 1103 else 1104 { 1105 clear_message(); 1106 } 1107 break; 1108 1109 case CMD_kidletog: 1110 ps.kidle = !ps.kidle; 1111 new_message(MT_standout | MT_delayed, 1112 " %sisplaying system idle process.", 1113 ps.kidle ? "D" : "Not d"); 1114 putchar('\r'); 1115 break; 1116 case CMD_pcputog: 1117 pcpu_stats = !pcpu_stats; 1118 new_message(MT_standout | MT_delayed, 1119 " Displaying %sCPU statistics.", 1120 pcpu_stats ? "per-" : "global "); 1121 toggle_pcpustats(); 1122 max_topn = display_updatecpus(&statics); 1123 reset_display(); 1124 putchar('\r'); 1125 break; 1126 case CMD_swaptog: 1127 ps.swap = !ps.swap; 1128 new_message(MT_standout | MT_delayed, 1129 " %sisplaying per-process swap usage.", 1130 ps.swap ? "D" : "Not d"); 1131 header_text = format_header(uname_field); 1132 reset_display(); 1133 putchar('\r'); 1134 break; 1135 case CMD_pid: 1136 new_message(MT_standout, 1137 "Process id to show (+ for all): "); 1138 if (readline(tempbuf2, sizeof(tempbuf2), false) > 0) { 1139 if (tempbuf2[0] == '+' && 1140 tempbuf2[1] == '\0') { 1141 ps.pid = (pid_t)-1; 1142 } else { 1143 unsigned long long num; 1144 const char *errstr; 1145 1146 num = strtonum(tempbuf2, 0, INT_MAX, 1147 &errstr); 1148 if (errstr != NULL || !find_pid(num)) { 1149 new_message(MT_standout, 1150 " %s: unknown pid", 1151 tempbuf2); 1152 no_command = true; 1153 } else { 1154 ps.pid = (pid_t)num; 1155 } 1156 } 1157 putchar('\r'); 1158 } else 1159 clear_message(); 1160 break; 1161 case CMD_NONE: 1162 assert(false && "reached switch without command"); 1163 } 1164 } 1165 } 1166 1167 /* flush out stuff that may have been written */ 1168 fflush(stdout); 1169 } 1170 } 1171 } 1172 1173 #ifdef DEBUG 1174 fclose(debug); 1175 #endif 1176 quit(0); 1177 } 1178 1179 /* 1180 * reset_display() - reset all the display routine pointers so that entire 1181 * screen will get redrawn. 1182 */ 1183 1184 static void 1185 reset_display(void) 1186 { 1187 d_loadave = i_loadave; 1188 d_procstates = i_procstates; 1189 d_cpustates = i_cpustates; 1190 d_memory = i_memory; 1191 d_arc = i_arc; 1192 d_carc = i_carc; 1193 d_swap = i_swap; 1194 d_message = i_message; 1195 d_header = i_header; 1196 d_process = i_process; 1197 } 1198 1199 /* 1200 * signal handlers 1201 */ 1202 1203 static sigret_t 1204 leave(int i __unused) /* exit under normal conditions -- INT handler */ 1205 { 1206 1207 leaveflag = 1; 1208 } 1209 1210 static sigret_t 1211 tstop(int i __unused) /* SIGTSTP handler */ 1212 { 1213 1214 tstopflag = 1; 1215 } 1216 1217 static sigret_t 1218 top_winch(int i __unused) /* SIGWINCH handler */ 1219 { 1220 1221 winchflag = 1; 1222 } 1223 1224 void __dead2 1225 quit(int status) /* exit under duress */ 1226 { 1227 end_screen(); 1228 exit(status); 1229 } 1230