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1.13 ! deraadt 1: /* $OpenBSD: top.c,v 1.12 2001/11/11 01:48:58 fgsch Exp $ */
1.1 downsj 2:
1.2 downsj 3: const char copyright[] = "Copyright (c) 1984 through 1996, William LeFebvre";
1.1 downsj 4:
5: /*
6: * Top users/processes display for Unix
7: * Version 3
8: *
9: * This program may be freely redistributed,
10: * but this entire comment MUST remain intact.
11: *
12: * Copyright (c) 1984, 1989, William LeFebvre, Rice University
13: * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
14: */
15:
16: /*
17: * See the file "Changes" for information on version-to-version changes.
18: */
19:
20: /*
21: * This file contains "main" and other high-level routines.
22: */
23:
24: /*
25: * The following preprocessor variables, when defined, are used to
26: * distinguish between different Unix implementations:
27: *
28: * FD_SET - macros FD_SET and FD_ZERO are used when defined
29: */
30:
1.2 downsj 31: #include <sys/types.h>
32: #include <stdio.h>
33: #include <ctype.h>
1.1 downsj 34: #include <signal.h>
35: #include <setjmp.h>
1.2 downsj 36: #include <string.h>
37: #include <stdlib.h>
38: #include <unistd.h>
1.5 deraadt 39: #include <errno.h>
1.1 downsj 40: #include <sys/time.h>
41:
42: /* includes specific to top */
43: #include "display.h" /* interface to display package */
44: #include "screen.h" /* interface to screen package */
45: #include "top.h"
46: #include "top.local.h"
47: #include "boolean.h"
48: #include "machine.h"
49: #include "utils.h"
50:
51: /* Size of the stdio buffer given to stdout */
52: #define Buffersize 2048
53:
54: /* The buffer that stdio will use */
55: char stdoutbuf[Buffersize];
56:
57: /* imported from screen.c */
58: extern int overstrike;
59:
60: /* signal handling routines */
1.2 downsj 61: static void leave __P((int));
62: static void onalrm __P((int));
63: static void tstop __P((int));
1.1 downsj 64: #ifdef SIGWINCH
1.2 downsj 65: static void winch __P((int));
1.1 downsj 66: #endif
67:
1.13 ! deraadt 68: volatile sig_atomic_t leaveflag;
! 69: volatile sig_atomic_t tstopflag;
! 70: volatile sig_atomic_t winchflag;
1.7 deraadt 71:
1.2 downsj 72: static void reset_display __P((void));
1.1 downsj 73:
74: /* values which need to be accessed by signal handlers */
75: static int max_topn; /* maximum displayable processes */
76:
77: /* miscellaneous things */
78: char *myname = "top";
79: jmp_buf jmp_int;
80:
81: /* routines that don't return int */
82:
83: #ifdef ORDER
84: extern int (*proc_compares[])();
85: #else
86: extern int proc_compare();
87: #endif
88: time_t time();
89:
90: caddr_t get_process_info();
91:
92: /* pointers to display routines */
1.2 downsj 93: void (*d_loadave)() = i_loadave;
94: void (*d_procstates)() = i_procstates;
95: void (*d_cpustates)() = i_cpustates;
96: void (*d_memory)() = i_memory;
97: void (*d_message)() = i_message;
98: void (*d_header)() = i_header;
99: void (*d_process)() = i_process;
1.1 downsj 100:
101:
1.2 downsj 102: int main(argc, argv)
1.1 downsj 103:
104: int argc;
105: char *argv[];
106:
107: {
108: register int i;
109: register int active_procs;
110: register int change;
111:
112: struct system_info system_info;
113: struct statics statics;
114: caddr_t processes;
115:
116: static char tempbuf1[50];
117: static char tempbuf2[50];
1.10 millert 118: sigset_t mask, oldmask;
1.1 downsj 119: int topn = Default_TOPN;
120: int delay = Default_DELAY;
121: int displays = 0; /* indicates unspecified */
122: time_t curr_time;
123: char *(*get_userid)() = username;
124: char *uname_field = "USERNAME";
125: char *header_text;
126: char *env_top;
127: char **preset_argv;
128: int preset_argc = 0;
129: char **av;
130: int ac;
131: char dostates = No;
132: char do_unames = Yes;
133: char interactive = Maybe;
134: char warnings = 0;
135: #if Default_TOPN == Infinity
136: char topn_specified = No;
137: #endif
138: char ch;
139: char *iptr;
140: char no_command = 1;
141: struct timeval timeout;
142: struct process_select ps;
143: #ifdef ORDER
144: char *order_name = NULL;
145: int order_index = 0;
146: #endif
147: #ifndef FD_SET
148: /* FD_SET and friends are not present: fake it */
149: typedef int fd_set;
150: #define FD_ZERO(x) (*(x) = 0)
151: #define FD_SET(f, x) (*(x) = f)
152: #endif
153: fd_set readfds;
154:
155: #ifdef ORDER
1.12 fgsch 156: static char command_chars[] = "\f qh?en#sdkriIuSo";
1.1 downsj 157: #else
1.12 fgsch 158: static char command_chars[] = "\f qh?en#sdkriIuS";
1.1 downsj 159: #endif
160: /* these defines enumerate the "strchr"s of the commands in command_chars */
161: #define CMD_redraw 0
162: #define CMD_update 1
163: #define CMD_quit 2
164: #define CMD_help1 3
165: #define CMD_help2 4
166: #define CMD_OSLIMIT 4 /* terminals with OS can only handle commands */
167: #define CMD_errors 5 /* less than or equal to CMD_OSLIMIT */
168: #define CMD_number1 6
169: #define CMD_number2 7
170: #define CMD_delay 8
171: #define CMD_displays 9
172: #define CMD_kill 10
173: #define CMD_renice 11
174: #define CMD_idletog 12
175: #define CMD_idletog2 13
176: #define CMD_user 14
1.12 fgsch 177: #define CMD_system 15
1.1 downsj 178: #ifdef ORDER
1.12 fgsch 179: #define CMD_order 16
1.1 downsj 180: #endif
181:
182: /* set the buffer for stdout */
183: #ifdef DEBUG
184: setbuffer(stdout, NULL, 0);
185: #else
186: setbuffer(stdout, stdoutbuf, Buffersize);
187: #endif
188:
189: /* get our name */
190: if (argc > 0)
191: {
192: if ((myname = strrchr(argv[0], '/')) == 0)
193: {
194: myname = argv[0];
195: }
196: else
197: {
198: myname++;
199: }
200: }
201:
202: /* initialize some selection options */
203: ps.idle = Yes;
204: ps.system = No;
205: ps.uid = -1;
206: ps.command = NULL;
207:
208: /* get preset options from the environment */
209: if ((env_top = getenv("TOP")) != NULL)
210: {
211: av = preset_argv = argparse(env_top, &preset_argc);
212: ac = preset_argc;
213:
214: /* set the dummy argument to an explanatory message, in case
215: getopt encounters a bad argument */
216: preset_argv[0] = "while processing environment";
217: }
218:
219: /* process options */
220: do {
221: /* if we're done doing the presets, then process the real arguments */
222: if (preset_argc == 0)
223: {
224: ac = argc;
225: av = argv;
226:
227: /* this should keep getopt happy... */
228: optind = 1;
229: }
230:
1.3 aaron 231: while ((i = getopt(ac, av, "SIbinqus:d:U:o:")) != -1)
1.1 downsj 232: {
233: switch(i)
234: {
235: case 'u': /* toggle uid/username display */
236: do_unames = !do_unames;
237: break;
238:
239: case 'U': /* display only username's processes */
240: if ((ps.uid = userid(optarg)) == -1)
241: {
242: fprintf(stderr, "%s: unknown user\n", optarg);
243: exit(1);
244: }
245: break;
246:
247: case 'S': /* show system processes */
248: ps.system = !ps.system;
249: break;
250:
251: case 'I': /* show idle processes */
252: ps.idle = !ps.idle;
253: break;
254:
255: case 'i': /* go interactive regardless */
256: interactive = Yes;
257: break;
258:
259: case 'n': /* batch, or non-interactive */
260: case 'b':
261: interactive = No;
262: break;
263:
264: case 'd': /* number of displays to show */
265: if ((i = atoiwi(optarg)) == Invalid || i == 0)
266: {
267: fprintf(stderr,
268: "%s: warning: display count should be positive -- option ignored\n",
269: myname);
270: warnings++;
271: }
272: else
273: {
274: displays = i;
275: }
276: break;
277:
278: case 's':
279: {
1.6 deraadt 280: char *endp;
281:
282: delay = strtoul(optarg, &endp, 10);
283: if (delay < 0 || *endp != '\0')
284: {
1.1 downsj 285: fprintf(stderr,
286: "%s: warning: seconds delay should be non-negative -- using default\n",
287: myname);
288: delay = Default_DELAY;
289: warnings++;
1.6 deraadt 290: }
1.1 downsj 291: }
292: break;
293:
294: case 'q': /* be quick about it */
295: /* only allow this if user is really root */
296: if (getuid() == 0)
297: {
298: /* be very un-nice! */
299: (void) nice(-20);
300: }
301: else
302: {
303: fprintf(stderr,
304: "%s: warning: `-q' option can only be used by root\n",
305: myname);
306: warnings++;
307: }
308: break;
309:
310: case 'o': /* select sort order */
311: #ifdef ORDER
312: order_name = optarg;
313: #else
314: fprintf(stderr,
315: "%s: this platform does not support arbitrary ordering. Sorry.\n",
316: myname);
317: warnings++;
318: #endif
319: break;
320:
321: default:
322: fprintf(stderr, "\
323: Top version %s\n\
324: Usage: %s [-ISbinqu] [-d x] [-s x] [-o field] [-U username] [number]\n",
325: version_string(), myname);
326: exit(1);
327: }
328: }
329:
330: /* get count of top processes to display (if any) */
331: if (optind < ac)
332: {
333: if ((topn = atoiwi(av[optind])) == Invalid)
334: {
335: fprintf(stderr,
336: "%s: warning: process display count should be non-negative -- using default\n",
337: myname);
338: warnings++;
339: }
340: #if Default_TOPN == Infinity
341: else
342: {
343: topn_specified = Yes;
344: }
345: #endif
346: }
347:
348: /* tricky: remember old value of preset_argc & set preset_argc = 0 */
349: i = preset_argc;
350: preset_argc = 0;
351:
352: /* repeat only if we really did the preset arguments */
353: } while (i != 0);
354:
355: /* set constants for username/uid display correctly */
356: if (!do_unames)
357: {
358: uname_field = " UID ";
359: get_userid = itoa7;
360: }
361:
362: /* initialize the kernel memory interface */
363: if (machine_init(&statics) == -1)
364: {
365: exit(1);
366: }
367:
368: #ifdef ORDER
369: /* determine sorting order index, if necessary */
370: if (order_name != NULL)
371: {
372: if ((order_index = string_index(order_name, statics.order_names)) == -1)
373: {
374: char **pp;
375:
376: fprintf(stderr, "%s: '%s' is not a recognized sorting order.\n",
377: myname, order_name);
378: fprintf(stderr, "\tTry one of these:");
379: pp = statics.order_names;
380: while (*pp != NULL)
381: {
382: fprintf(stderr, " %s", *pp++);
383: }
384: fputc('\n', stderr);
385: exit(1);
386: }
387: }
388: #endif
389:
390: #ifdef no_initialization_needed
391: /* initialize the hashing stuff */
392: if (do_unames)
393: {
394: init_hash();
395: }
396: #endif
397:
398: /* initialize termcap */
399: init_termcap(interactive);
400:
401: /* get the string to use for the process area header */
402: header_text = format_header(uname_field);
403:
404: /* initialize display interface */
405: if ((max_topn = display_init(&statics)) == -1)
406: {
407: fprintf(stderr, "%s: can't allocate sufficient memory\n", myname);
408: exit(4);
409: }
410:
411: /* print warning if user requested more processes than we can display */
412: if (topn > max_topn)
413: {
414: fprintf(stderr,
415: "%s: warning: this terminal can only display %d processes.\n",
416: myname, max_topn);
417: warnings++;
418: }
419:
420: /* adjust for topn == Infinity */
421: if (topn == Infinity)
422: {
423: /*
424: * For smart terminals, infinity really means everything that can
425: * be displayed, or Largest.
426: * On dumb terminals, infinity means every process in the system!
427: * We only really want to do that if it was explicitly specified.
428: * This is always the case when "Default_TOPN != Infinity". But if
429: * topn wasn't explicitly specified and we are on a dumb terminal
430: * and the default is Infinity, then (and only then) we use
431: * "Nominal_TOPN" instead.
432: */
433: #if Default_TOPN == Infinity
434: topn = smart_terminal ? Largest :
435: (topn_specified ? Largest : Nominal_TOPN);
436: #else
437: topn = Largest;
438: #endif
439: }
440:
441: /* set header display accordingly */
442: display_header(topn > 0);
443:
444: /* determine interactive state */
445: if (interactive == Maybe)
446: {
447: interactive = smart_terminal;
448: }
449:
450: /* if # of displays not specified, fill it in */
451: if (displays == 0)
452: {
453: displays = smart_terminal ? Infinity : 1;
454: }
455:
1.10 millert 456: /* block interrupt signals while setting up the screen and the handlers */
457: sigemptyset(&mask);
458: sigaddset(&mask, SIGINT);
459: sigaddset(&mask, SIGQUIT);
460: sigaddset(&mask, SIGTSTP);
461: sigprocmask(SIG_BLOCK, &mask, &oldmask);
1.1 downsj 462: init_screen();
463: (void) signal(SIGINT, leave);
464: (void) signal(SIGQUIT, leave);
465: (void) signal(SIGTSTP, tstop);
466: #ifdef SIGWINCH
467: (void) signal(SIGWINCH, winch);
468: #endif
1.10 millert 469: sigprocmask(SIG_SETMASK, &oldmask, NULL);
1.1 downsj 470: if (warnings)
471: {
472: fputs("....", stderr);
473: fflush(stderr); /* why must I do this? */
474: sleep((unsigned)(3 * warnings));
475: fputc('\n', stderr);
476: }
477:
1.7 deraadt 478: restart:
1.1 downsj 479:
480: /*
481: * main loop -- repeat while display count is positive or while it
482: * indicates infinity (by being -1)
483: */
484:
485: while ((displays == -1) || (displays-- > 0))
486: {
487: /* get the current stats */
488: get_system_info(&system_info);
489:
490: /* get the current set of processes */
491: processes =
492: get_process_info(&system_info,
493: &ps,
494: #ifdef ORDER
495: proc_compares[order_index]);
496: #else
497: proc_compare);
498: #endif
499:
500: /* display the load averages */
501: (*d_loadave)(system_info.last_pid,
502: system_info.load_avg);
503:
504: /* display the current time */
505: /* this method of getting the time SHOULD be fairly portable */
506: time(&curr_time);
507: i_timeofday(&curr_time);
508:
509: /* display process state breakdown */
510: (*d_procstates)(system_info.p_total,
511: system_info.procstates);
512:
513: /* display the cpu state percentage breakdown */
514: if (dostates) /* but not the first time */
515: {
516: (*d_cpustates)(system_info.cpustates);
517: }
518: else
519: {
520: /* we'll do it next time */
521: if (smart_terminal)
522: {
523: z_cpustates();
524: }
525: else
526: {
1.9 deraadt 527: if (putchar('\n') == EOF)
528: exit(1);
1.1 downsj 529: }
530: dostates = Yes;
531: }
532:
533: /* display memory stats */
534: (*d_memory)(system_info.memory);
535:
536: /* handle message area */
537: (*d_message)();
538:
539: /* update the header area */
540: (*d_header)(header_text);
541:
542: if (topn > 0)
543: {
544: /* determine number of processes to actually display */
545: /* this number will be the smallest of: active processes,
546: number user requested, number current screen accomodates */
547: active_procs = system_info.p_active;
548: if (active_procs > topn)
549: {
550: active_procs = topn;
551: }
552: if (active_procs > max_topn)
553: {
554: active_procs = max_topn;
555: }
556:
557: /* now show the top "n" processes. */
558: for (i = 0; i < active_procs; i++)
559: {
560: (*d_process)(i, format_next_process(processes, get_userid));
561: }
562: }
563: else
564: {
565: i = 0;
566: }
567:
568: /* do end-screen processing */
569: u_endscreen(i);
570:
571: /* now, flush the output buffer */
572: fflush(stdout);
573:
574: /* only do the rest if we have more displays to show */
575: if (displays)
576: {
577: /* switch out for new display on smart terminals */
578: if (smart_terminal)
579: {
580: if (overstrike)
581: {
582: reset_display();
583: }
584: else
585: {
586: d_loadave = u_loadave;
587: d_procstates = u_procstates;
588: d_cpustates = u_cpustates;
589: d_memory = u_memory;
590: d_message = u_message;
591: d_header = u_header;
592: d_process = u_process;
593: }
594: }
595:
596: no_command = Yes;
597: if (!interactive)
598: {
599: /* set up alarm */
600: (void) signal(SIGALRM, onalrm);
601: (void) alarm((unsigned)delay);
602:
603: /* wait for the rest of it .... */
604: pause();
605: }
606: else while (no_command)
607: {
608: /* assume valid command unless told otherwise */
609: no_command = No;
610:
611: /* set up arguments for select with timeout */
612: FD_ZERO(&readfds);
1.11 deraadt 613: FD_SET(STDIN_FILENO, &readfds); /* for standard input */
1.1 downsj 614: timeout.tv_sec = delay;
615: timeout.tv_usec = 0;
616:
1.7 deraadt 617: if (leaveflag) {
618: end_screen();
619: exit(0);
620: }
621:
622: if (tstopflag) {
623: /* move to the lower left */
624: end_screen();
625: fflush(stdout);
626:
627: /* default the signal handler action */
628: (void) signal(SIGTSTP, SIG_DFL);
629:
630: /* unblock the signal and send ourselves one */
1.10 millert 631: sigemptyset(&mask);
632: sigaddset(&mask, SIGTSTP);
633: sigprocmask(SIG_UNBLOCK, &mask, NULL);
1.7 deraadt 634: (void) kill(0, SIGTSTP);
635:
636: /* reset the signal handler */
637: (void) signal(SIGTSTP, tstop);
638:
639: /* reinit screen */
640: reinit_screen();
641: reset_display();
642: tstopflag = 0;
643: goto restart;
644: }
645:
646: if (winchflag) {
647: /* reascertain the screen dimensions */
648: get_screensize();
649:
650: /* tell display to resize */
651: max_topn = display_resize();
652:
653: /* reset the signal handler */
654: (void) signal(SIGWINCH, winch);
655:
656: reset_display();
657: winchflag = 0;
658: goto restart;
659: }
660:
1.1 downsj 661: /* wait for either input or the end of the delay period */
1.11 deraadt 662: if (select(STDIN_FILENO + 1, &readfds, (fd_set *)NULL,
663: (fd_set *)NULL, &timeout) > 0)
1.1 downsj 664: {
665: int newval;
666: char *errmsg;
667:
668: /* something to read -- clear the message area first */
669: clear_message();
670:
671: /* now read it and convert to command strchr */
672: /* (use "change" as a temporary to hold strchr) */
673: (void) read(0, &ch, 1);
674: if ((iptr = strchr(command_chars, ch)) == NULL)
675: {
676: /* illegal command */
677: new_message(MT_standout, " Command not understood");
1.9 deraadt 678: if (putchar('\r') == EOF)
679: exit(1);
1.1 downsj 680: no_command = Yes;
681: }
682: else
683: {
684: change = iptr - command_chars;
685: if (overstrike && change > CMD_OSLIMIT)
686: {
687: /* error */
688: new_message(MT_standout,
689: " Command cannot be handled by this terminal");
1.9 deraadt 690: if (putchar('\r') == EOF)
691: exit(1);
1.1 downsj 692: no_command = Yes;
693: }
694: else switch(change)
695: {
696: case CMD_redraw: /* redraw screen */
697: reset_display();
698: break;
699:
700: case CMD_update: /* merely update display */
701: /* is the load average high? */
702: if (system_info.load_avg[0] > LoadMax)
703: {
704: /* yes, go home for visual feedback */
705: go_home();
706: fflush(stdout);
707: }
708: break;
709:
710: case CMD_quit: /* quit */
711: quit(0);
712: /*NOTREACHED*/
713: break;
714:
715: case CMD_help1: /* help */
716: case CMD_help2:
717: reset_display();
718: clear();
719: show_help();
720: standout("Hit any key to continue: ");
721: fflush(stdout);
722: (void) read(0, &ch, 1);
723: break;
724:
725: case CMD_errors: /* show errors */
726: if (error_count() == 0)
727: {
728: new_message(MT_standout,
729: " Currently no errors to report.");
1.9 deraadt 730: if (putchar('\r') == EOF)
731: exit(1);
1.1 downsj 732: no_command = Yes;
733: }
734: else
735: {
736: reset_display();
737: clear();
738: show_errors();
739: standout("Hit any key to continue: ");
740: fflush(stdout);
741: (void) read(0, &ch, 1);
742: }
743: break;
744:
745: case CMD_number1: /* new number */
746: case CMD_number2:
747: new_message(MT_standout,
748: "Number of processes to show: ");
749: newval = readline(tempbuf1, 8, Yes);
750: if (newval > -1)
751: {
752: if (newval > max_topn)
753: {
754: new_message(MT_standout | MT_delayed,
755: " This terminal can only display %d processes.",
756: max_topn);
1.9 deraadt 757: if (putchar('\r') == EOF)
758: exit(1);
1.1 downsj 759: }
760:
761: if (newval == 0)
762: {
763: /* inhibit the header */
764: display_header(No);
765: }
766: else if (newval > topn && topn == 0)
767: {
768: /* redraw the header */
769: display_header(Yes);
770: d_header = i_header;
771: }
772: topn = newval;
773: }
774: break;
775:
776: case CMD_delay: /* new seconds delay */
777: new_message(MT_standout, "Seconds to delay: ");
778: if ((i = readline(tempbuf1, 8, Yes)) > -1)
779: {
780: delay = i;
781: }
782: clear_message();
783: break;
784:
785: case CMD_displays: /* change display count */
786: new_message(MT_standout,
787: "Displays to show (currently %s): ",
788: displays == -1 ? "infinite" :
789: itoa(displays));
790: if ((i = readline(tempbuf1, 10, Yes)) > 0)
791: {
792: displays = i;
793: }
794: else if (i == 0)
795: {
796: quit(0);
797: }
798: clear_message();
799: break;
800:
801: case CMD_kill: /* kill program */
802: new_message(0, "kill ");
803: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
804: {
805: if ((errmsg = kill_procs(tempbuf2)) != NULL)
806: {
1.4 millert 807: new_message(MT_standout, "%s", errmsg);
1.9 deraadt 808: if (putchar('\r') == EOF)
809: exit(1);
1.1 downsj 810: no_command = Yes;
811: }
812: }
813: else
814: {
815: clear_message();
816: }
817: break;
818:
819: case CMD_renice: /* renice program */
820: new_message(0, "renice ");
821: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
822: {
823: if ((errmsg = renice_procs(tempbuf2)) != NULL)
824: {
1.4 millert 825: new_message(MT_standout, "%s", errmsg);
1.9 deraadt 826: if (putchar('\r') == EOF)
827: exit(1);
1.1 downsj 828: no_command = Yes;
829: }
830: }
831: else
832: {
833: clear_message();
834: }
835: break;
836:
837: case CMD_idletog:
838: case CMD_idletog2:
839: ps.idle = !ps.idle;
840: new_message(MT_standout | MT_delayed,
841: " %sisplaying idle processes.",
842: ps.idle ? "D" : "Not d");
1.9 deraadt 843: if (putchar('\r') == EOF)
844: exit(1);
1.1 downsj 845: break;
846:
847: case CMD_user:
848: new_message(MT_standout,
849: "Username to show: ");
850: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
851: {
852: if (tempbuf2[0] == '+' &&
853: tempbuf2[1] == '\0')
854: {
855: ps.uid = -1;
856: }
857: else if ((i = userid(tempbuf2)) == -1)
858: {
859: new_message(MT_standout,
860: " %s: unknown user", tempbuf2);
861: no_command = Yes;
862: }
863: else
864: {
865: ps.uid = i;
866: }
1.9 deraadt 867: if (putchar('\r') == EOF)
868: exit(1);
1.1 downsj 869: }
870: else
871: {
872: clear_message();
873: }
874: break;
1.12 fgsch 875:
876: case CMD_system:
877: ps.system = !ps.system;
878: new_message(MT_standout | MT_delayed,
879: " %sisplaying system processes.",
880: ps.system ? "D" : "Not d");
881: break;
882:
1.1 downsj 883: #ifdef ORDER
884: case CMD_order:
885: new_message(MT_standout,
886: "Order to sort: ");
887: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
888: {
889: if ((i = string_index(tempbuf2, statics.order_names)) == -1)
890: {
891: new_message(MT_standout,
892: " %s: unrecognized sorting order", tempbuf2);
893: no_command = Yes;
894: }
895: else
896: {
897: order_index = i;
898: }
1.9 deraadt 899: if (putchar('\r') == EOF)
900: exit(1);
1.1 downsj 901: }
902: else
903: {
904: clear_message();
905: }
906: break;
907: #endif
908:
909: default:
910: new_message(MT_standout, " BAD CASE IN SWITCH!");
1.9 deraadt 911: if (putchar('\r') == EOF)
912: exit(1);
1.1 downsj 913: }
914: }
915:
916: /* flush out stuff that may have been written */
917: fflush(stdout);
918: }
919: }
920: }
921: }
922:
923: quit(0);
924: /*NOTREACHED*/
1.8 pvalchev 925: return(0);
1.1 downsj 926: }
927:
928: /*
929: * reset_display() - reset all the display routine pointers so that entire
930: * screen will get redrawn.
931: */
932:
1.2 downsj 933: static void reset_display()
1.1 downsj 934:
935: {
936: d_loadave = i_loadave;
937: d_procstates = i_procstates;
938: d_cpustates = i_cpustates;
939: d_memory = i_memory;
940: d_message = i_message;
941: d_header = i_header;
942: d_process = i_process;
943: }
944:
945: /*
946: * signal handlers
947: */
948:
1.2 downsj 949: void leave(unused) /* exit under normal conditions -- INT handler */
950:
951: int unused;
1.1 downsj 952:
953: {
1.7 deraadt 954: leaveflag = 1;
1.1 downsj 955: }
956:
1.2 downsj 957: void tstop(i) /* SIGTSTP handler */
1.1 downsj 958:
959: int i;
960:
961: {
1.7 deraadt 962: tstopflag = 1;
1.1 downsj 963: }
964:
965: #ifdef SIGWINCH
1.2 downsj 966: void winch(i) /* SIGWINCH handler */
1.1 downsj 967:
968: int i;
969:
970: {
1.7 deraadt 971: winchflag = 1;
1.1 downsj 972: }
973: #endif
974:
975: void quit(status) /* exit under duress */
976:
977: int status;
978:
979: {
980: end_screen();
981: exit(status);
982: /*NOTREACHED*/
983: }
984:
1.2 downsj 985: void onalrm(unused) /* SIGALRM handler */
986:
987: int unused;
1.1 downsj 988:
989: {
990: /* this is only used in batch mode to break out of the pause() */
991: /* return; */
992: }
993: