1 char *copyright =
2 "Copyright (c) 1984 through 1996, William LeFebvre";
3
4 /*
5 * Top users/processes display for Unix
6 * Version 3
7 *
8 * This program may be freely redistributed,
9 * but this entire comment MUST remain intact.
10 *
11 * Copyright (c) 1984, 1989, William LeFebvre, Rice University
12 * Copyright (c) 1989 - 1994, William LeFebvre, Northwestern University
13 * Copyright (c) 1994, 1995, William LeFebvre, Argonne National Laboratory
14 * Copyright (c) 1996, William LeFebvre, Group sys Consulting
15 *
16 * $FreeBSD$
17 */
18
19 /*
20 * See the file "Changes" for information on version-to-version changes.
21 */
22
23 /*
24 * This file contains "main" and other high-level routines.
25 */
26
27 /*
28 * The following preprocessor variables, when defined, are used to
29 * distinguish between different Unix implementations:
30 *
31 * SIGHOLD - use SVR4 sighold function when defined
32 * SIGRELSE - use SVR4 sigrelse function when defined
33 * FD_SET - macros FD_SET and FD_ZERO are used when defined
34 */
35
36 #include "os.h"
37 #include <errno.h>
38 #include <signal.h>
39 #include <setjmp.h>
40 #include <ctype.h>
41 #include <sys/jail.h>
42 #include <sys/time.h>
43 #include <jail.h>
44
45 /* includes specific to top */
46 #include "display.h" /* interface to display package */
47 #include "screen.h" /* interface to screen package */
48 #include "top.h"
49 #include "top.local.h"
50 #include "boolean.h"
51 #include "machine.h"
52 #include "utils.h"
53
54 /* Size of the stdio buffer given to stdout */
55 #define Buffersize 2048
56
57 /* The buffer that stdio will use */
58 char stdoutbuf[Buffersize];
59
60 /* build Signal masks */
61 #define Smask(s) (1 << ((s) - 1))
62
63 /* for getopt: */
64 extern int optind;
65 extern char *optarg;
66
67 /* imported from screen.c */
68 extern int overstrike;
69
70 static int fmt_flags = 0;
71 int pcpu_stats = No;
72
73 /* signal handling routines */
74 sigret_t leave();
75 sigret_t tstop();
76 #ifdef SIGWINCH
77 sigret_t winch();
78 #endif
79
80 volatile sig_atomic_t leaveflag;
81 volatile sig_atomic_t tstopflag;
82 volatile sig_atomic_t winchflag;
83
84 /* internal routines */
85 void quit();
86
87 /* values which need to be accessed by signal handlers */
88 static int max_topn; /* maximum displayable processes */
89
90 /* miscellaneous things */
91 struct process_select ps;
92 char *myname = "top";
93 jmp_buf jmp_int;
94
95 /* routines that don't return int */
96
97 char *username();
98 char *ctime();
99 char *kill_procs();
100 char *renice_procs();
101
102 #ifdef ORDER
103 extern int (*compares[])();
104 #else
105 extern int proc_compare();
106 extern int io_compare();
107 #endif
108 time_t time();
109
110 caddr_t get_process_info();
111
112 /* different routines for displaying the user's identification */
113 /* (values assigned to get_userid) */
114 char *username();
115 char *itoa7();
116
117 /* display routines that need to be predeclared */
118 int i_loadave();
119 int u_loadave();
120 int i_procstates();
121 int u_procstates();
122 int i_cpustates();
123 int u_cpustates();
124 int i_memory();
125 int u_memory();
126 int i_arc();
127 int u_arc();
128 int i_swap();
129 int u_swap();
130 int i_message();
131 int u_message();
132 int i_header();
133 int u_header();
134 int i_process();
135 int u_process();
136
137 /* pointers to display routines */
138 int (*d_loadave)() = i_loadave;
139 int (*d_procstates)() = i_procstates;
140 int (*d_cpustates)() = i_cpustates;
141 int (*d_memory)() = i_memory;
142 int (*d_arc)() = i_arc;
143 int (*d_swap)() = i_swap;
144 int (*d_message)() = i_message;
145 int (*d_header)() = i_header;
146 int (*d_process)() = i_process;
147
148
main(argc,argv)149 main(argc, argv)
150
151 int argc;
152 char *argv[];
153
154 {
155 register int i;
156 register int active_procs;
157 register int change;
158
159 struct system_info system_info;
160 struct statics statics;
161 caddr_t processes;
162
163 static char tempbuf1[50];
164 static char tempbuf2[50];
165 int old_sigmask; /* only used for BSD-style signals */
166 int topn = Default_TOPN;
167 int delay = Default_DELAY;
168 int displays = 0; /* indicates unspecified */
169 int sel_ret = 0;
170 time_t curr_time;
171 char *(*get_userid)() = username;
172 char *uname_field = "USERNAME";
173 char *header_text;
174 char *env_top;
175 char **preset_argv;
176 int preset_argc = 0;
177 char **av;
178 int ac;
179 char dostates = No;
180 char do_unames = Yes;
181 char interactive = Maybe;
182 char warnings = 0;
183 #if Default_TOPN == Infinity
184 char topn_specified = No;
185 #endif
186 char ch;
187 char *iptr;
188 char no_command = 1;
189 struct timeval timeout;
190 #ifdef ORDER
191 char *order_name = NULL;
192 int order_index = 0;
193 #endif
194 #ifndef FD_SET
195 /* FD_SET and friends are not present: fake it */
196 typedef int fd_set;
197 #define FD_ZERO(x) (*(x) = 0)
198 #define FD_SET(f, x) (*(x) = 1<<f)
199 #endif
200 fd_set readfds;
201
202 #ifdef ORDER
203 static char command_chars[] = "\f qh?en#sdkriIutHmSCajzPJo";
204 #else
205 static char command_chars[] = "\f qh?en#sdkriIutHmSCajzPJ";
206 #endif
207 /* these defines enumerate the "strchr"s of the commands in command_chars */
208 #define CMD_redraw 0
209 #define CMD_update 1
210 #define CMD_quit 2
211 #define CMD_help1 3
212 #define CMD_help2 4
213 #define CMD_OSLIMIT 4 /* terminals with OS can only handle commands */
214 #define CMD_errors 5 /* less than or equal to CMD_OSLIMIT */
215 #define CMD_number1 6
216 #define CMD_number2 7
217 #define CMD_delay 8
218 #define CMD_displays 9
219 #define CMD_kill 10
220 #define CMD_renice 11
221 #define CMD_idletog 12
222 #define CMD_idletog2 13
223 #define CMD_user 14
224 #define CMD_selftog 15
225 #define CMD_thrtog 16
226 #define CMD_viewtog 17
227 #define CMD_viewsys 18
228 #define CMD_wcputog 19
229 #define CMD_showargs 20
230 #define CMD_jidtog 21
231 #define CMD_kidletog 22
232 #define CMD_pcputog 23
233 #define CMD_jail 24
234 #ifdef ORDER
235 #define CMD_order 25
236 #endif
237
238 /* set the buffer for stdout */
239 #ifdef DEBUG
240 extern FILE *debug;
241 debug = fopen("debug.run", "w");
242 setbuffer(stdout, NULL, 0);
243 #else
244 setbuffer(stdout, stdoutbuf, Buffersize);
245 #endif
246
247 /* get our name */
248 if (argc > 0)
249 {
250 if ((myname = strrchr(argv[0], '/')) == 0)
251 {
252 myname = argv[0];
253 }
254 else
255 {
256 myname++;
257 }
258 }
259
260 /* initialize some selection options */
261 ps.idle = Yes;
262 ps.self = -1;
263 ps.system = No;
264 ps.uid = -1;
265 ps.thread = No;
266 ps.wcpu = 1;
267 ps.jid = -1;
268 ps.jail = No;
269 ps.kidle = Yes;
270 ps.command = NULL;
271
272 /* get preset options from the environment */
273 if ((env_top = getenv("TOP")) != NULL)
274 {
275 av = preset_argv = argparse(env_top, &preset_argc);
276 ac = preset_argc;
277
278 /* set the dummy argument to an explanatory message, in case
279 getopt encounters a bad argument */
280 preset_argv[0] = "while processing environment";
281 }
282
283 /* process options */
284 do {
285 /* if we're done doing the presets, then process the real arguments */
286 if (preset_argc == 0)
287 {
288 ac = argc;
289 av = argv;
290
291 /* this should keep getopt happy... */
292 optind = 1;
293 }
294
295 while ((i = getopt(ac, av, "CSIHPabijJ:nquvzs:d:U:m:o:t")) != EOF)
296 {
297 switch(i)
298 {
299 case 'v': /* show version number */
300 fprintf(stderr, "%s: version %s\n",
301 myname, version_string());
302 exit(1);
303 break;
304
305 case 'u': /* toggle uid/username display */
306 do_unames = !do_unames;
307 break;
308
309 case 'U': /* display only username's processes */
310 if ((ps.uid = userid(optarg)) == -1)
311 {
312 fprintf(stderr, "%s: unknown user\n", optarg);
313 exit(1);
314 }
315 break;
316
317 case 'S': /* show system processes */
318 ps.system = !ps.system;
319 break;
320
321 case 'I': /* show idle processes */
322 ps.idle = !ps.idle;
323 break;
324
325 case 'i': /* go interactive regardless */
326 interactive = Yes;
327 break;
328
329 case 'n': /* batch, or non-interactive */
330 case 'b':
331 interactive = No;
332 break;
333
334 case 'a':
335 fmt_flags ^= FMT_SHOWARGS;
336 break;
337
338 case 'd': /* number of displays to show */
339 if ((i = atoiwi(optarg)) == Invalid || i == 0)
340 {
341 fprintf(stderr,
342 "%s: warning: display count should be positive -- option ignored\n",
343 myname);
344 warnings++;
345 }
346 else
347 {
348 displays = i;
349 }
350 break;
351
352 case 's':
353 if ((delay = atoi(optarg)) < 0 || (delay == 0 && getuid() != 0))
354 {
355 fprintf(stderr,
356 "%s: warning: seconds delay should be positive -- using default\n",
357 myname);
358 delay = Default_DELAY;
359 warnings++;
360 }
361 break;
362
363 case 'q': /* be quick about it */
364 /* only allow this if user is really root */
365 if (getuid() == 0)
366 {
367 /* be very un-nice! */
368 (void) nice(-20);
369 }
370 else
371 {
372 fprintf(stderr,
373 "%s: warning: `-q' option can only be used by root\n",
374 myname);
375 warnings++;
376 }
377 break;
378
379 case 'm': /* select display mode */
380 if (strcmp(optarg, "io") == 0) {
381 displaymode = DISP_IO;
382 } else if (strcmp(optarg, "cpu") == 0) {
383 displaymode = DISP_CPU;
384 } else {
385 fprintf(stderr,
386 "%s: warning: `-m' option can only take args "
387 "'io' or 'cpu'\n",
388 myname);
389 exit(1);
390 }
391 break;
392
393 case 'o': /* select sort order */
394 #ifdef ORDER
395 order_name = optarg;
396 #else
397 fprintf(stderr,
398 "%s: this platform does not support arbitrary ordering. Sorry.\n",
399 myname);
400 warnings++;
401 #endif
402 break;
403
404 case 't':
405 ps.self = (ps.self == -1) ? getpid() : -1;
406 break;
407
408 case 'C':
409 ps.wcpu = !ps.wcpu;
410 break;
411
412 case 'H':
413 ps.thread = !ps.thread;
414 break;
415
416 case 'j':
417 ps.jail = !ps.jail;
418 break;
419
420 case 'J': /* display only jail's processes */
421 if ((ps.jid = jail_getid(optarg)) == -1)
422 {
423 fprintf(stderr, "%s: unknown jail\n", optarg);
424 exit(1);
425 }
426 ps.jail = 1;
427 break;
428
429 case 'P':
430 pcpu_stats = !pcpu_stats;
431 break;
432
433 case 'z':
434 ps.kidle = !ps.kidle;
435 break;
436
437 default:
438 fprintf(stderr,
439 "Top version %s\n"
440 "Usage: %s [-abCHIijnPqStuvz] [-d count] [-m io | cpu] [-o field] [-s time]\n"
441 " [-J jail] [-U username] [number]\n",
442 version_string(), myname);
443 exit(1);
444 }
445 }
446
447 /* get count of top processes to display (if any) */
448 if (optind < ac)
449 {
450 if ((topn = atoiwi(av[optind])) == Invalid)
451 {
452 fprintf(stderr,
453 "%s: warning: process display count should be non-negative -- using default\n",
454 myname);
455 warnings++;
456 }
457 #if Default_TOPN == Infinity
458 else
459 {
460 topn_specified = Yes;
461 }
462 #endif
463 }
464
465 /* tricky: remember old value of preset_argc & set preset_argc = 0 */
466 i = preset_argc;
467 preset_argc = 0;
468
469 /* repeat only if we really did the preset arguments */
470 } while (i != 0);
471
472 /* set constants for username/uid display correctly */
473 if (!do_unames)
474 {
475 uname_field = " UID ";
476 get_userid = itoa7;
477 }
478
479 /* initialize the kernel memory interface */
480 if (machine_init(&statics, do_unames) == -1)
481 {
482 exit(1);
483 }
484
485 #ifdef ORDER
486 /* determine sorting order index, if necessary */
487 if (order_name != NULL)
488 {
489 if ((order_index = string_index(order_name, statics.order_names)) == -1)
490 {
491 char **pp;
492
493 fprintf(stderr, "%s: '%s' is not a recognized sorting order.\n",
494 myname, order_name);
495 fprintf(stderr, "\tTry one of these:");
496 pp = statics.order_names;
497 while (*pp != NULL)
498 {
499 fprintf(stderr, " %s", *pp++);
500 }
501 fputc('\n', stderr);
502 exit(1);
503 }
504 }
505 #endif
506
507 #ifdef no_initialization_needed
508 /* initialize the hashing stuff */
509 if (do_unames)
510 {
511 init_hash();
512 }
513 #endif
514
515 /* initialize termcap */
516 init_termcap(interactive);
517
518 /* get the string to use for the process area header */
519 header_text = format_header(uname_field);
520
521 /* initialize display interface */
522 if ((max_topn = display_init(&statics)) == -1)
523 {
524 fprintf(stderr, "%s: can't allocate sufficient memory\n", myname);
525 exit(4);
526 }
527
528 /* print warning if user requested more processes than we can display */
529 if (topn > max_topn)
530 {
531 fprintf(stderr,
532 "%s: warning: this terminal can only display %d processes.\n",
533 myname, max_topn);
534 warnings++;
535 }
536
537 /* adjust for topn == Infinity */
538 if (topn == Infinity)
539 {
540 /*
541 * For smart terminals, infinity really means everything that can
542 * be displayed, or Largest.
543 * On dumb terminals, infinity means every process in the system!
544 * We only really want to do that if it was explicitly specified.
545 * This is always the case when "Default_TOPN != Infinity". But if
546 * topn wasn't explicitly specified and we are on a dumb terminal
547 * and the default is Infinity, then (and only then) we use
548 * "Nominal_TOPN" instead.
549 */
550 #if Default_TOPN == Infinity
551 topn = smart_terminal ? Largest :
552 (topn_specified ? Largest : Nominal_TOPN);
553 #else
554 topn = Largest;
555 #endif
556 }
557
558 /* set header display accordingly */
559 display_header(topn > 0);
560
561 /* determine interactive state */
562 if (interactive == Maybe)
563 {
564 interactive = smart_terminal;
565 }
566
567 /* if # of displays not specified, fill it in */
568 if (displays == 0)
569 {
570 displays = smart_terminal ? Infinity : 1;
571 }
572
573 /* hold interrupt signals while setting up the screen and the handlers */
574 #ifdef SIGHOLD
575 sighold(SIGINT);
576 sighold(SIGQUIT);
577 sighold(SIGTSTP);
578 #else
579 old_sigmask = sigblock(Smask(SIGINT) | Smask(SIGQUIT) | Smask(SIGTSTP));
580 #endif
581 init_screen();
582 (void) signal(SIGINT, leave);
583 (void) signal(SIGQUIT, leave);
584 (void) signal(SIGTSTP, tstop);
585 #ifdef SIGWINCH
586 (void) signal(SIGWINCH, winch);
587 #endif
588 #ifdef SIGRELSE
589 sigrelse(SIGINT);
590 sigrelse(SIGQUIT);
591 sigrelse(SIGTSTP);
592 #else
593 (void) sigsetmask(old_sigmask);
594 #endif
595 if (warnings)
596 {
597 fputs("....", stderr);
598 fflush(stderr); /* why must I do this? */
599 sleep((unsigned)(3 * warnings));
600 fputc('\n', stderr);
601 }
602
603 restart:
604
605 /*
606 * main loop -- repeat while display count is positive or while it
607 * indicates infinity (by being -1)
608 */
609
610 while ((displays == -1) || (displays-- > 0))
611 {
612 int (*compare)();
613
614
615 /* get the current stats */
616 get_system_info(&system_info);
617
618 #ifdef ORDER
619 compare = compares[order_index];
620 #else
621 if (displaymode == DISP_CPU)
622 compare = proc_compare;
623 else
624 compare = io_compare;
625 #endif
626
627 /* get the current set of processes */
628 processes =
629 get_process_info(&system_info, &ps, compare);
630
631 /* display the load averages */
632 (*d_loadave)(system_info.last_pid,
633 system_info.load_avg);
634
635 /* display the current time */
636 /* this method of getting the time SHOULD be fairly portable */
637 time(&curr_time);
638 i_uptime(&system_info.boottime, &curr_time);
639 i_timeofday(&curr_time);
640
641 /* display process state breakdown */
642 (*d_procstates)(system_info.p_total,
643 system_info.procstates);
644
645 /* display the cpu state percentage breakdown */
646 if (dostates) /* but not the first time */
647 {
648 (*d_cpustates)(system_info.cpustates);
649 }
650 else
651 {
652 /* we'll do it next time */
653 if (smart_terminal)
654 {
655 z_cpustates();
656 }
657 else
658 {
659 putchar('\n');
660 }
661 dostates = Yes;
662 }
663
664 /* display memory stats */
665 (*d_memory)(system_info.memory);
666 (*d_arc)(system_info.arc);
667
668 /* display swap stats */
669 (*d_swap)(system_info.swap);
670
671 /* handle message area */
672 (*d_message)();
673
674 /* update the header area */
675 (*d_header)(header_text);
676
677 if (topn > 0)
678 {
679 /* determine number of processes to actually display */
680 /* this number will be the smallest of: active processes,
681 number user requested, number current screen accomodates */
682 active_procs = system_info.P_ACTIVE;
683 if (active_procs > topn)
684 {
685 active_procs = topn;
686 }
687 if (active_procs > max_topn)
688 {
689 active_procs = max_topn;
690 }
691
692 /* now show the top "n" processes. */
693 for (i = 0; i < active_procs; i++)
694 {
695 (*d_process)(i, format_next_process(processes, get_userid,
696 fmt_flags));
697 }
698 }
699 else
700 {
701 i = 0;
702 }
703
704 /* do end-screen processing */
705 u_endscreen(i);
706
707 /* now, flush the output buffer */
708 if (fflush(stdout) != 0)
709 {
710 new_message(MT_standout, " Write error on stdout");
711 putchar('\r');
712 quit(1);
713 /*NOTREACHED*/
714 }
715
716 /* only do the rest if we have more displays to show */
717 if (displays)
718 {
719 /* switch out for new display on smart terminals */
720 if (smart_terminal)
721 {
722 if (overstrike)
723 {
724 reset_display();
725 }
726 else
727 {
728 d_loadave = u_loadave;
729 d_procstates = u_procstates;
730 d_cpustates = u_cpustates;
731 d_memory = u_memory;
732 d_arc = u_arc;
733 d_swap = u_swap;
734 d_message = u_message;
735 d_header = u_header;
736 d_process = u_process;
737 }
738 }
739
740 no_command = Yes;
741 if (!interactive)
742 {
743 sleep(delay);
744 if (leaveflag) {
745 end_screen();
746 exit(0);
747 }
748 }
749 else while (no_command)
750 {
751 /* assume valid command unless told otherwise */
752 no_command = No;
753
754 /* set up arguments for select with timeout */
755 FD_ZERO(&readfds);
756 FD_SET(0, &readfds); /* for standard input */
757 timeout.tv_sec = delay;
758 timeout.tv_usec = 0;
759
760 if (leaveflag) {
761 end_screen();
762 exit(0);
763 }
764
765 if (tstopflag) {
766 /* move to the lower left */
767 end_screen();
768 fflush(stdout);
769
770 /* default the signal handler action */
771 (void) signal(SIGTSTP, SIG_DFL);
772
773 /* unblock the signal and send ourselves one */
774 #ifdef SIGRELSE
775 sigrelse(SIGTSTP);
776 #else
777 (void) sigsetmask(sigblock(0) & ~(1 << (SIGTSTP - 1)));
778 #endif
779 (void) kill(0, SIGTSTP);
780
781 /* reset the signal handler */
782 (void) signal(SIGTSTP, tstop);
783
784 /* reinit screen */
785 reinit_screen();
786 reset_display();
787 tstopflag = 0;
788 goto restart;
789 }
790
791 if (winchflag) {
792 /* reascertain the screen dimensions */
793 get_screensize();
794
795 /* tell display to resize */
796 max_topn = display_resize();
797
798 /* reset the signal handler */
799 (void) signal(SIGWINCH, winch);
800
801 reset_display();
802 winchflag = 0;
803 goto restart;
804 }
805
806 /* wait for either input or the end of the delay period */
807 sel_ret = select(2, &readfds, NULL, NULL, &timeout);
808 if (sel_ret < 0 && errno != EINTR)
809 quit(0);
810 if (sel_ret > 0)
811 {
812 int newval;
813 char *errmsg;
814
815 /* something to read -- clear the message area first */
816 clear_message();
817
818 /* now read it and convert to command strchr */
819 /* (use "change" as a temporary to hold strchr) */
820 if (read(0, &ch, 1) != 1)
821 {
822 /* read error: either 0 or -1 */
823 new_message(MT_standout, " Read error on stdin");
824 putchar('\r');
825 quit(1);
826 /*NOTREACHED*/
827 }
828 if ((iptr = strchr(command_chars, ch)) == NULL)
829 {
830 if (ch != '\r' && ch != '\n')
831 {
832 /* illegal command */
833 new_message(MT_standout, " Command not understood");
834 }
835 putchar('\r');
836 no_command = Yes;
837 }
838 else
839 {
840 change = iptr - command_chars;
841 if (overstrike && change > CMD_OSLIMIT)
842 {
843 /* error */
844 new_message(MT_standout,
845 " Command cannot be handled by this terminal");
846 putchar('\r');
847 no_command = Yes;
848 }
849 else switch(change)
850 {
851 case CMD_redraw: /* redraw screen */
852 reset_display();
853 break;
854
855 case CMD_update: /* merely update display */
856 /* is the load average high? */
857 if (system_info.load_avg[0] > LoadMax)
858 {
859 /* yes, go home for visual feedback */
860 go_home();
861 fflush(stdout);
862 }
863 break;
864
865 case CMD_quit: /* quit */
866 quit(0);
867 /*NOTREACHED*/
868 break;
869
870 case CMD_help1: /* help */
871 case CMD_help2:
872 reset_display();
873 clear();
874 show_help();
875 standout("Hit any key to continue: ");
876 fflush(stdout);
877 (void) read(0, &ch, 1);
878 break;
879
880 case CMD_errors: /* show errors */
881 if (error_count() == 0)
882 {
883 new_message(MT_standout,
884 " Currently no errors to report.");
885 putchar('\r');
886 no_command = Yes;
887 }
888 else
889 {
890 reset_display();
891 clear();
892 show_errors();
893 standout("Hit any key to continue: ");
894 fflush(stdout);
895 (void) read(0, &ch, 1);
896 }
897 break;
898
899 case CMD_number1: /* new number */
900 case CMD_number2:
901 new_message(MT_standout,
902 "Number of processes to show: ");
903 newval = readline(tempbuf1, 8, Yes);
904 if (newval > -1)
905 {
906 if (newval > max_topn)
907 {
908 new_message(MT_standout | MT_delayed,
909 " This terminal can only display %d processes.",
910 max_topn);
911 putchar('\r');
912 }
913
914 if (newval == 0)
915 {
916 /* inhibit the header */
917 display_header(No);
918 }
919 else if (newval > topn && topn == 0)
920 {
921 /* redraw the header */
922 display_header(Yes);
923 d_header = i_header;
924 }
925 topn = newval;
926 }
927 break;
928
929 case CMD_delay: /* new seconds delay */
930 new_message(MT_standout, "Seconds to delay: ");
931 if ((i = readline(tempbuf1, 8, Yes)) > -1)
932 {
933 if ((delay = i) == 0 && getuid() != 0)
934 {
935 delay = 1;
936 }
937 }
938 clear_message();
939 break;
940
941 case CMD_displays: /* change display count */
942 new_message(MT_standout,
943 "Displays to show (currently %s): ",
944 displays == -1 ? "infinite" :
945 itoa(displays));
946 if ((i = readline(tempbuf1, 10, Yes)) > 0)
947 {
948 displays = i;
949 }
950 else if (i == 0)
951 {
952 quit(0);
953 }
954 clear_message();
955 break;
956
957 case CMD_kill: /* kill program */
958 new_message(0, "kill ");
959 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
960 {
961 if ((errmsg = kill_procs(tempbuf2)) != NULL)
962 {
963 new_message(MT_standout, "%s", errmsg);
964 putchar('\r');
965 no_command = Yes;
966 }
967 }
968 else
969 {
970 clear_message();
971 }
972 break;
973
974 case CMD_renice: /* renice program */
975 new_message(0, "renice ");
976 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
977 {
978 if ((errmsg = renice_procs(tempbuf2)) != NULL)
979 {
980 new_message(MT_standout, "%s", errmsg);
981 putchar('\r');
982 no_command = Yes;
983 }
984 }
985 else
986 {
987 clear_message();
988 }
989 break;
990
991 case CMD_idletog:
992 case CMD_idletog2:
993 ps.idle = !ps.idle;
994 new_message(MT_standout | MT_delayed,
995 " %sisplaying idle processes.",
996 ps.idle ? "D" : "Not d");
997 putchar('\r');
998 break;
999
1000 case CMD_selftog:
1001 ps.self = (ps.self == -1) ? getpid() : -1;
1002 new_message(MT_standout | MT_delayed,
1003 " %sisplaying self.",
1004 (ps.self == -1) ? "D" : "Not d");
1005 putchar('\r');
1006 break;
1007
1008 case CMD_user:
1009 new_message(MT_standout,
1010 "Username to show (+ for all): ");
1011 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
1012 {
1013 if (tempbuf2[0] == '+' &&
1014 tempbuf2[1] == '\0')
1015 {
1016 ps.uid = -1;
1017 }
1018 else if ((i = userid(tempbuf2)) == -1)
1019 {
1020 new_message(MT_standout,
1021 " %s: unknown user", tempbuf2);
1022 no_command = Yes;
1023 }
1024 else
1025 {
1026 ps.uid = i;
1027 }
1028 putchar('\r');
1029 }
1030 else
1031 {
1032 clear_message();
1033 }
1034 break;
1035
1036 case CMD_thrtog:
1037 ps.thread = !ps.thread;
1038 new_message(MT_standout | MT_delayed,
1039 " Displaying threads %s",
1040 ps.thread ? "separately" : "as a count");
1041 header_text = format_header(uname_field);
1042 reset_display();
1043 putchar('\r');
1044 break;
1045 case CMD_wcputog:
1046 ps.wcpu = !ps.wcpu;
1047 new_message(MT_standout | MT_delayed,
1048 " Displaying %s CPU",
1049 ps.wcpu ? "weighted" : "raw");
1050 header_text = format_header(uname_field);
1051 reset_display();
1052 putchar('\r');
1053 break;
1054 case CMD_viewtog:
1055 if (++displaymode == DISP_MAX)
1056 displaymode = 0;
1057 header_text = format_header(uname_field);
1058 display_header(Yes);
1059 d_header = i_header;
1060 reset_display();
1061 break;
1062 case CMD_viewsys:
1063 ps.system = !ps.system;
1064 break;
1065 case CMD_showargs:
1066 fmt_flags ^= FMT_SHOWARGS;
1067 break;
1068 #ifdef ORDER
1069 case CMD_order:
1070 new_message(MT_standout,
1071 "Order to sort: ");
1072 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
1073 {
1074 if ((i = string_index(tempbuf2, statics.order_names)) == -1)
1075 {
1076 new_message(MT_standout,
1077 " %s: unrecognized sorting order", tempbuf2);
1078 no_command = Yes;
1079 }
1080 else
1081 {
1082 order_index = i;
1083 }
1084 putchar('\r');
1085 }
1086 else
1087 {
1088 clear_message();
1089 }
1090 break;
1091 #endif
1092 case CMD_jidtog:
1093 ps.jail = !ps.jail;
1094 new_message(MT_standout | MT_delayed,
1095 " %sisplaying jail ID.",
1096 ps.jail ? "D" : "Not d");
1097 header_text = format_header(uname_field);
1098 reset_display();
1099 putchar('\r');
1100 break;
1101
1102 case CMD_jail:
1103 new_message(MT_standout,
1104 "Jail to show (+ for all): ");
1105 if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
1106 {
1107 if (tempbuf2[0] == '+' &&
1108 tempbuf2[1] == '\0')
1109 {
1110 ps.jid = -1;
1111 }
1112 else if ((i = jail_getid(tempbuf2)) == -1)
1113 {
1114 new_message(MT_standout,
1115 " %s: unknown jail", tempbuf2);
1116 no_command = Yes;
1117 }
1118 else
1119 {
1120 ps.jid = i;
1121 }
1122 if (ps.jail == 0) {
1123 ps.jail = 1;
1124 new_message(MT_standout |
1125 MT_delayed, " Displaying jail "
1126 "ID.");
1127 header_text =
1128 format_header(uname_field);
1129 reset_display();
1130 }
1131 putchar('\r');
1132 }
1133 else
1134 {
1135 clear_message();
1136 }
1137 break;
1138
1139 case CMD_kidletog:
1140 ps.kidle = !ps.kidle;
1141 new_message(MT_standout | MT_delayed,
1142 " %sisplaying system idle process.",
1143 ps.kidle ? "D" : "Not d");
1144 putchar('\r');
1145 break;
1146 case CMD_pcputog:
1147 pcpu_stats = !pcpu_stats;
1148 new_message(MT_standout | MT_delayed,
1149 " Displaying %sCPU statistics.",
1150 pcpu_stats ? "per-" : "global ");
1151 toggle_pcpustats();
1152 max_topn = display_updatecpus(&statics);
1153 reset_display();
1154 putchar('\r');
1155 break;
1156 default:
1157 new_message(MT_standout, " BAD CASE IN SWITCH!");
1158 putchar('\r');
1159 }
1160 }
1161
1162 /* flush out stuff that may have been written */
1163 fflush(stdout);
1164 }
1165 }
1166 }
1167 }
1168
1169 #ifdef DEBUG
1170 fclose(debug);
1171 #endif
1172 quit(0);
1173 /*NOTREACHED*/
1174 }
1175
1176 /*
1177 * reset_display() - reset all the display routine pointers so that entire
1178 * screen will get redrawn.
1179 */
1180
reset_display()1181 reset_display()
1182
1183 {
1184 d_loadave = i_loadave;
1185 d_procstates = i_procstates;
1186 d_cpustates = i_cpustates;
1187 d_memory = i_memory;
1188 d_arc = i_arc;
1189 d_swap = i_swap;
1190 d_message = i_message;
1191 d_header = i_header;
1192 d_process = i_process;
1193 }
1194
1195 /*
1196 * signal handlers
1197 */
1198
leave()1199 sigret_t leave() /* exit under normal conditions -- INT handler */
1200
1201 {
1202 leaveflag = 1;
1203 }
1204
tstop(i)1205 sigret_t tstop(i) /* SIGTSTP handler */
1206
1207 int i;
1208
1209 {
1210 tstopflag = 1;
1211 }
1212
1213 #ifdef SIGWINCH
winch(i)1214 sigret_t winch(i) /* SIGWINCH handler */
1215
1216 int i;
1217
1218 {
1219 winchflag = 1;
1220 }
1221 #endif
1222
quit(status)1223 void quit(status) /* exit under duress */
1224
1225 int status;
1226
1227 {
1228 end_screen();
1229 exit(status);
1230 /*NOTREACHED*/
1231 }
1232