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1.16 ! hugh 1: /* $OpenBSD: top.c,v 1.15 2002/02/16 21:27:55 millert 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 */
1.15 millert 61: static void leave(int);
62: static void onalrm(int);
63: static void tstop(int);
1.1 downsj 64: #ifdef SIGWINCH
1.15 millert 65: static void winch(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:
1.15 millert 72: static void reset_display(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: {
1.14 mpech 108: int i;
109: int active_procs;
110: int change;
1.1 downsj 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;
1.16 ! hugh 120: double delay = Default_DELAY;
1.1 downsj 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:
1.16 ! hugh 282: delay = strtod(optarg, &endp);
! 283:
! 284: if (delay < 0 || delay >= 1000000 || *endp != '\0')
1.6 deraadt 285: {
1.1 downsj 286: fprintf(stderr,
1.16 ! hugh 287: "%s: warning: delay should be a non-negative number -- using default\n",
1.1 downsj 288: myname);
289: delay = Default_DELAY;
290: warnings++;
1.6 deraadt 291: }
1.1 downsj 292: }
293: break;
294:
295: case 'q': /* be quick about it */
296: /* only allow this if user is really root */
297: if (getuid() == 0)
298: {
299: /* be very un-nice! */
300: (void) nice(-20);
301: }
302: else
303: {
304: fprintf(stderr,
305: "%s: warning: `-q' option can only be used by root\n",
306: myname);
307: warnings++;
308: }
309: break;
310:
311: case 'o': /* select sort order */
312: #ifdef ORDER
313: order_name = optarg;
314: #else
315: fprintf(stderr,
316: "%s: this platform does not support arbitrary ordering. Sorry.\n",
317: myname);
318: warnings++;
319: #endif
320: break;
321:
322: default:
323: fprintf(stderr, "\
324: Top version %s\n\
325: Usage: %s [-ISbinqu] [-d x] [-s x] [-o field] [-U username] [number]\n",
326: version_string(), myname);
327: exit(1);
328: }
329: }
330:
331: /* get count of top processes to display (if any) */
332: if (optind < ac)
333: {
334: if ((topn = atoiwi(av[optind])) == Invalid)
335: {
336: fprintf(stderr,
337: "%s: warning: process display count should be non-negative -- using default\n",
338: myname);
339: warnings++;
340: }
341: #if Default_TOPN == Infinity
342: else
343: {
344: topn_specified = Yes;
345: }
346: #endif
347: }
348:
349: /* tricky: remember old value of preset_argc & set preset_argc = 0 */
350: i = preset_argc;
351: preset_argc = 0;
352:
353: /* repeat only if we really did the preset arguments */
354: } while (i != 0);
355:
356: /* set constants for username/uid display correctly */
357: if (!do_unames)
358: {
359: uname_field = " UID ";
360: get_userid = itoa7;
361: }
362:
363: /* initialize the kernel memory interface */
364: if (machine_init(&statics) == -1)
365: {
366: exit(1);
367: }
368:
369: #ifdef ORDER
370: /* determine sorting order index, if necessary */
371: if (order_name != NULL)
372: {
373: if ((order_index = string_index(order_name, statics.order_names)) == -1)
374: {
375: char **pp;
376:
377: fprintf(stderr, "%s: '%s' is not a recognized sorting order.\n",
378: myname, order_name);
379: fprintf(stderr, "\tTry one of these:");
380: pp = statics.order_names;
381: while (*pp != NULL)
382: {
383: fprintf(stderr, " %s", *pp++);
384: }
385: fputc('\n', stderr);
386: exit(1);
387: }
388: }
389: #endif
390:
391: #ifdef no_initialization_needed
392: /* initialize the hashing stuff */
393: if (do_unames)
394: {
395: init_hash();
396: }
397: #endif
398:
399: /* initialize termcap */
400: init_termcap(interactive);
401:
402: /* get the string to use for the process area header */
403: header_text = format_header(uname_field);
404:
405: /* initialize display interface */
406: if ((max_topn = display_init(&statics)) == -1)
407: {
408: fprintf(stderr, "%s: can't allocate sufficient memory\n", myname);
409: exit(4);
410: }
411:
412: /* print warning if user requested more processes than we can display */
413: if (topn > max_topn)
414: {
415: fprintf(stderr,
416: "%s: warning: this terminal can only display %d processes.\n",
417: myname, max_topn);
418: warnings++;
419: }
420:
421: /* adjust for topn == Infinity */
422: if (topn == Infinity)
423: {
424: /*
425: * For smart terminals, infinity really means everything that can
426: * be displayed, or Largest.
427: * On dumb terminals, infinity means every process in the system!
428: * We only really want to do that if it was explicitly specified.
429: * This is always the case when "Default_TOPN != Infinity". But if
430: * topn wasn't explicitly specified and we are on a dumb terminal
431: * and the default is Infinity, then (and only then) we use
432: * "Nominal_TOPN" instead.
433: */
434: #if Default_TOPN == Infinity
435: topn = smart_terminal ? Largest :
436: (topn_specified ? Largest : Nominal_TOPN);
437: #else
438: topn = Largest;
439: #endif
440: }
441:
442: /* set header display accordingly */
443: display_header(topn > 0);
444:
445: /* determine interactive state */
446: if (interactive == Maybe)
447: {
448: interactive = smart_terminal;
449: }
450:
451: /* if # of displays not specified, fill it in */
452: if (displays == 0)
453: {
454: displays = smart_terminal ? Infinity : 1;
455: }
456:
1.10 millert 457: /* block interrupt signals while setting up the screen and the handlers */
458: sigemptyset(&mask);
459: sigaddset(&mask, SIGINT);
460: sigaddset(&mask, SIGQUIT);
461: sigaddset(&mask, SIGTSTP);
462: sigprocmask(SIG_BLOCK, &mask, &oldmask);
1.1 downsj 463: init_screen();
464: (void) signal(SIGINT, leave);
465: (void) signal(SIGQUIT, leave);
466: (void) signal(SIGTSTP, tstop);
467: #ifdef SIGWINCH
468: (void) signal(SIGWINCH, winch);
469: #endif
1.10 millert 470: sigprocmask(SIG_SETMASK, &oldmask, NULL);
1.1 downsj 471: if (warnings)
472: {
473: fputs("....", stderr);
474: fflush(stderr); /* why must I do this? */
475: sleep((unsigned)(3 * warnings));
476: fputc('\n', stderr);
477: }
478:
1.7 deraadt 479: restart:
1.1 downsj 480:
481: /*
482: * main loop -- repeat while display count is positive or while it
483: * indicates infinity (by being -1)
484: */
485:
486: while ((displays == -1) || (displays-- > 0))
487: {
488: /* get the current stats */
489: get_system_info(&system_info);
490:
491: /* get the current set of processes */
492: processes =
493: get_process_info(&system_info,
494: &ps,
495: #ifdef ORDER
496: proc_compares[order_index]);
497: #else
498: proc_compare);
499: #endif
500:
501: /* display the load averages */
502: (*d_loadave)(system_info.last_pid,
503: system_info.load_avg);
504:
505: /* display the current time */
506: /* this method of getting the time SHOULD be fairly portable */
507: time(&curr_time);
508: i_timeofday(&curr_time);
509:
510: /* display process state breakdown */
511: (*d_procstates)(system_info.p_total,
512: system_info.procstates);
513:
514: /* display the cpu state percentage breakdown */
515: if (dostates) /* but not the first time */
516: {
517: (*d_cpustates)(system_info.cpustates);
518: }
519: else
520: {
521: /* we'll do it next time */
522: if (smart_terminal)
523: {
524: z_cpustates();
525: }
526: else
527: {
1.9 deraadt 528: if (putchar('\n') == EOF)
529: exit(1);
1.1 downsj 530: }
531: dostates = Yes;
532: }
533:
534: /* display memory stats */
535: (*d_memory)(system_info.memory);
536:
537: /* handle message area */
538: (*d_message)();
539:
540: /* update the header area */
541: (*d_header)(header_text);
542:
543: if (topn > 0)
544: {
545: /* determine number of processes to actually display */
546: /* this number will be the smallest of: active processes,
547: number user requested, number current screen accomodates */
548: active_procs = system_info.p_active;
549: if (active_procs > topn)
550: {
551: active_procs = topn;
552: }
553: if (active_procs > max_topn)
554: {
555: active_procs = max_topn;
556: }
557:
558: /* now show the top "n" processes. */
559: for (i = 0; i < active_procs; i++)
560: {
561: (*d_process)(i, format_next_process(processes, get_userid));
562: }
563: }
564: else
565: {
566: i = 0;
567: }
568:
569: /* do end-screen processing */
570: u_endscreen(i);
571:
572: /* now, flush the output buffer */
573: fflush(stdout);
574:
575: /* only do the rest if we have more displays to show */
576: if (displays)
577: {
578: /* switch out for new display on smart terminals */
579: if (smart_terminal)
580: {
581: if (overstrike)
582: {
583: reset_display();
584: }
585: else
586: {
587: d_loadave = u_loadave;
588: d_procstates = u_procstates;
589: d_cpustates = u_cpustates;
590: d_memory = u_memory;
591: d_message = u_message;
592: d_header = u_header;
593: d_process = u_process;
594: }
595: }
596:
597: no_command = Yes;
598: if (!interactive)
599: {
600: /* set up alarm */
601: (void) signal(SIGALRM, onalrm);
602: (void) alarm((unsigned)delay);
603:
604: /* wait for the rest of it .... */
605: pause();
606: }
607: else while (no_command)
608: {
609: /* assume valid command unless told otherwise */
610: no_command = No;
611:
612: /* set up arguments for select with timeout */
613: FD_ZERO(&readfds);
1.11 deraadt 614: FD_SET(STDIN_FILENO, &readfds); /* for standard input */
1.16 ! hugh 615: timeout.tv_sec = (long)delay;
! 616: timeout.tv_usec = (long)((delay - timeout.tv_sec) * 1000000);
1.1 downsj 617:
1.7 deraadt 618: if (leaveflag) {
619: end_screen();
620: exit(0);
621: }
622:
623: if (tstopflag) {
624: /* move to the lower left */
625: end_screen();
626: fflush(stdout);
627:
628: /* default the signal handler action */
629: (void) signal(SIGTSTP, SIG_DFL);
630:
631: /* unblock the signal and send ourselves one */
1.10 millert 632: sigemptyset(&mask);
633: sigaddset(&mask, SIGTSTP);
634: sigprocmask(SIG_UNBLOCK, &mask, NULL);
1.7 deraadt 635: (void) kill(0, SIGTSTP);
636:
637: /* reset the signal handler */
638: (void) signal(SIGTSTP, tstop);
639:
640: /* reinit screen */
641: reinit_screen();
642: reset_display();
643: tstopflag = 0;
644: goto restart;
645: }
646:
647: if (winchflag) {
648: /* reascertain the screen dimensions */
649: get_screensize();
650:
651: /* tell display to resize */
652: max_topn = display_resize();
653:
654: /* reset the signal handler */
655: (void) signal(SIGWINCH, winch);
656:
657: reset_display();
658: winchflag = 0;
659: goto restart;
660: }
661:
1.1 downsj 662: /* wait for either input or the end of the delay period */
1.11 deraadt 663: if (select(STDIN_FILENO + 1, &readfds, (fd_set *)NULL,
664: (fd_set *)NULL, &timeout) > 0)
1.1 downsj 665: {
666: int newval;
667: char *errmsg;
668:
669: /* something to read -- clear the message area first */
670: clear_message();
671:
672: /* now read it and convert to command strchr */
673: /* (use "change" as a temporary to hold strchr) */
674: (void) read(0, &ch, 1);
675: if ((iptr = strchr(command_chars, ch)) == NULL)
676: {
677: /* illegal command */
678: new_message(MT_standout, " Command not understood");
1.9 deraadt 679: if (putchar('\r') == EOF)
680: exit(1);
1.1 downsj 681: no_command = Yes;
682: }
683: else
684: {
685: change = iptr - command_chars;
686: if (overstrike && change > CMD_OSLIMIT)
687: {
688: /* error */
689: new_message(MT_standout,
690: " Command cannot be handled by this terminal");
1.9 deraadt 691: if (putchar('\r') == EOF)
692: exit(1);
1.1 downsj 693: no_command = Yes;
694: }
695: else switch(change)
696: {
697: case CMD_redraw: /* redraw screen */
698: reset_display();
699: break;
700:
701: case CMD_update: /* merely update display */
702: /* is the load average high? */
703: if (system_info.load_avg[0] > LoadMax)
704: {
705: /* yes, go home for visual feedback */
706: go_home();
707: fflush(stdout);
708: }
709: break;
710:
711: case CMD_quit: /* quit */
712: quit(0);
713: /*NOTREACHED*/
714: break;
715:
716: case CMD_help1: /* help */
717: case CMD_help2:
718: reset_display();
719: clear();
720: show_help();
721: standout("Hit any key to continue: ");
722: fflush(stdout);
723: (void) read(0, &ch, 1);
724: break;
725:
726: case CMD_errors: /* show errors */
727: if (error_count() == 0)
728: {
729: new_message(MT_standout,
730: " Currently no errors to report.");
1.9 deraadt 731: if (putchar('\r') == EOF)
732: exit(1);
1.1 downsj 733: no_command = Yes;
734: }
735: else
736: {
737: reset_display();
738: clear();
739: show_errors();
740: standout("Hit any key to continue: ");
741: fflush(stdout);
742: (void) read(0, &ch, 1);
743: }
744: break;
745:
746: case CMD_number1: /* new number */
747: case CMD_number2:
748: new_message(MT_standout,
749: "Number of processes to show: ");
750: newval = readline(tempbuf1, 8, Yes);
751: if (newval > -1)
752: {
753: if (newval > max_topn)
754: {
755: new_message(MT_standout | MT_delayed,
756: " This terminal can only display %d processes.",
757: max_topn);
1.9 deraadt 758: if (putchar('\r') == EOF)
759: exit(1);
1.1 downsj 760: }
761:
762: if (newval == 0)
763: {
764: /* inhibit the header */
765: display_header(No);
766: }
767: else if (newval > topn && topn == 0)
768: {
769: /* redraw the header */
770: display_header(Yes);
771: d_header = i_header;
772: }
773: topn = newval;
774: }
775: break;
776:
777: case CMD_delay: /* new seconds delay */
778: new_message(MT_standout, "Seconds to delay: ");
1.16 ! hugh 779: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
1.1 downsj 780: {
1.16 ! hugh 781: char *endp;
! 782: double newdelay = strtod(tempbuf2, &endp);
! 783: if (newdelay >= 0 && newdelay < 1000000 && *endp == '\0')
! 784: {
! 785: delay = newdelay;
! 786: }
1.1 downsj 787: }
788: clear_message();
789: break;
790:
791: case CMD_displays: /* change display count */
792: new_message(MT_standout,
793: "Displays to show (currently %s): ",
794: displays == -1 ? "infinite" :
795: itoa(displays));
796: if ((i = readline(tempbuf1, 10, Yes)) > 0)
797: {
798: displays = i;
799: }
800: else if (i == 0)
801: {
802: quit(0);
803: }
804: clear_message();
805: break;
806:
807: case CMD_kill: /* kill program */
808: new_message(0, "kill ");
809: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
810: {
811: if ((errmsg = kill_procs(tempbuf2)) != NULL)
812: {
1.4 millert 813: new_message(MT_standout, "%s", errmsg);
1.9 deraadt 814: if (putchar('\r') == EOF)
815: exit(1);
1.1 downsj 816: no_command = Yes;
817: }
818: }
819: else
820: {
821: clear_message();
822: }
823: break;
824:
825: case CMD_renice: /* renice program */
826: new_message(0, "renice ");
827: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
828: {
829: if ((errmsg = renice_procs(tempbuf2)) != NULL)
830: {
1.4 millert 831: new_message(MT_standout, "%s", errmsg);
1.9 deraadt 832: if (putchar('\r') == EOF)
833: exit(1);
1.1 downsj 834: no_command = Yes;
835: }
836: }
837: else
838: {
839: clear_message();
840: }
841: break;
842:
843: case CMD_idletog:
844: case CMD_idletog2:
845: ps.idle = !ps.idle;
846: new_message(MT_standout | MT_delayed,
847: " %sisplaying idle processes.",
848: ps.idle ? "D" : "Not d");
1.9 deraadt 849: if (putchar('\r') == EOF)
850: exit(1);
1.1 downsj 851: break;
852:
853: case CMD_user:
854: new_message(MT_standout,
855: "Username to show: ");
856: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
857: {
858: if (tempbuf2[0] == '+' &&
859: tempbuf2[1] == '\0')
860: {
861: ps.uid = -1;
862: }
863: else if ((i = userid(tempbuf2)) == -1)
864: {
865: new_message(MT_standout,
866: " %s: unknown user", tempbuf2);
867: no_command = Yes;
868: }
869: else
870: {
871: ps.uid = i;
872: }
1.9 deraadt 873: if (putchar('\r') == EOF)
874: exit(1);
1.1 downsj 875: }
876: else
877: {
878: clear_message();
879: }
880: break;
1.12 fgsch 881:
882: case CMD_system:
883: ps.system = !ps.system;
884: new_message(MT_standout | MT_delayed,
885: " %sisplaying system processes.",
886: ps.system ? "D" : "Not d");
887: break;
888:
1.1 downsj 889: #ifdef ORDER
890: case CMD_order:
891: new_message(MT_standout,
892: "Order to sort: ");
893: if (readline(tempbuf2, sizeof(tempbuf2), No) > 0)
894: {
895: if ((i = string_index(tempbuf2, statics.order_names)) == -1)
896: {
897: new_message(MT_standout,
898: " %s: unrecognized sorting order", tempbuf2);
899: no_command = Yes;
900: }
901: else
902: {
903: order_index = i;
904: }
1.9 deraadt 905: if (putchar('\r') == EOF)
906: exit(1);
1.1 downsj 907: }
908: else
909: {
910: clear_message();
911: }
912: break;
913: #endif
914:
915: default:
916: new_message(MT_standout, " BAD CASE IN SWITCH!");
1.9 deraadt 917: if (putchar('\r') == EOF)
918: exit(1);
1.1 downsj 919: }
920: }
921:
922: /* flush out stuff that may have been written */
923: fflush(stdout);
924: }
925: }
926: }
927: }
928:
929: quit(0);
930: /*NOTREACHED*/
1.8 pvalchev 931: return(0);
1.1 downsj 932: }
933:
934: /*
935: * reset_display() - reset all the display routine pointers so that entire
936: * screen will get redrawn.
937: */
938:
1.2 downsj 939: static void reset_display()
1.1 downsj 940:
941: {
942: d_loadave = i_loadave;
943: d_procstates = i_procstates;
944: d_cpustates = i_cpustates;
945: d_memory = i_memory;
946: d_message = i_message;
947: d_header = i_header;
948: d_process = i_process;
949: }
950:
951: /*
952: * signal handlers
953: */
954:
1.2 downsj 955: void leave(unused) /* exit under normal conditions -- INT handler */
956:
957: int unused;
1.1 downsj 958:
959: {
1.7 deraadt 960: leaveflag = 1;
1.1 downsj 961: }
962:
1.2 downsj 963: void tstop(i) /* SIGTSTP handler */
1.1 downsj 964:
965: int i;
966:
967: {
1.7 deraadt 968: tstopflag = 1;
1.1 downsj 969: }
970:
971: #ifdef SIGWINCH
1.2 downsj 972: void winch(i) /* SIGWINCH handler */
1.1 downsj 973:
974: int i;
975:
976: {
1.7 deraadt 977: winchflag = 1;
1.1 downsj 978: }
979: #endif
980:
981: void quit(status) /* exit under duress */
982:
983: int status;
984:
985: {
986: end_screen();
987: exit(status);
988: /*NOTREACHED*/
989: }
990:
1.2 downsj 991: void onalrm(unused) /* SIGALRM handler */
992:
993: int unused;
1.1 downsj 994:
995: {
996: /* this is only used in batch mode to break out of the pause() */
997: /* return; */
998: }
999: