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1.106 ! kn 1: /* $OpenBSD: top.c,v 1.105 2020/08/23 21:11:55 kn Exp $ */
1.1 downsj 2:
3: /*
4: * Top users/processes display for Unix
5: * Version 3
6: *
1.18 deraadt 7: * Copyright (c) 1984, 1989, William LeFebvre, Rice University
8: * Copyright (c) 1989, 1990, 1992, William LeFebvre, Northwestern University
1.1 downsj 9: *
1.18 deraadt 10: * Redistribution and use in source and binary forms, with or without
11: * modification, are permitted provided that the following conditions
12: * are met:
13: * 1. Redistributions of source code must retain the above copyright
14: * notice, this list of conditions and the following disclaimer.
15: * 2. Redistributions in binary form must reproduce the above copyright
16: * notice, this list of conditions and the following disclaimer in the
17: * documentation and/or other materials provided with the distribution.
18: *
19: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22: * IN NO EVENT SHALL THE AUTHOR OR HIS EMPLOYER BE LIABLE FOR ANY DIRECT, INDIRECT,
23: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
1.1 downsj 29: */
30:
1.2 downsj 31: #include <sys/types.h>
1.105 kn 32: #include <sys/socket.h>
1.51 otto 33: #include <curses.h>
1.23 millert 34: #include <err.h>
35: #include <errno.h>
1.2 downsj 36: #include <stdio.h>
1.1 downsj 37: #include <signal.h>
1.2 downsj 38: #include <string.h>
1.28 deraadt 39: #include <poll.h>
1.92 millert 40: #include <pwd.h>
1.2 downsj 41: #include <stdlib.h>
1.35 otto 42: #include <limits.h>
1.2 downsj 43: #include <unistd.h>
1.100 kn 44: #include <stdbool.h>
1.1 downsj 45:
46: /* includes specific to top */
47: #include "display.h" /* interface to display package */
48: #include "screen.h" /* interface to screen package */
49: #include "top.h"
50: #include "top.local.h"
51: #include "machine.h"
52: #include "utils.h"
53:
54: /* Size of the stdio buffer given to stdout */
1.20 deraadt 55: #define BUFFERSIZE 2048
1.1 downsj 56:
57: /* The buffer that stdio will use */
1.32 deraadt 58: char stdoutbuf[BUFFERSIZE];
1.1 downsj 59:
60: /* signal handling routines */
1.32 deraadt 61: static void leave(int);
62: static void onalrm(int);
63: static void tstop(int);
1.51 otto 64: static void sigwinch(int);
1.1 downsj 65:
1.25 deraadt 66: volatile sig_atomic_t leaveflag, tstopflag, winchflag;
1.7 deraadt 67:
1.32 deraadt 68: static void reset_display(void);
1.20 deraadt 69: int rundisplay(void);
1.1 downsj 70:
1.32 deraadt 71: static int max_topn; /* maximum displayable processes */
1.102 zhuk 72: static int skip; /* how many processes to skip (scroll) */
1.1 downsj 73:
1.97 cheloha 74: extern int ncpu;
75: extern int ncpuonline;
76:
1.32 deraadt 77: extern int (*proc_compares[])(const void *, const void *);
1.20 deraadt 78: int order_index;
1.98 kn 79: int rev_order;
1.1 downsj 80:
1.20 deraadt 81: int displays = 0; /* indicates unspecified */
1.100 kn 82: int do_unames = true;
1.20 deraadt 83: struct process_select ps;
1.100 kn 84: int interactive = -1; /* indicates undefined */
1.20 deraadt 85: double delay = Default_DELAY;
86: char *order_name = NULL;
87: int topn = Default_TOPN;
1.100 kn 88: int no_command = true;
89: int old_system = false;
90: int old_threads = false;
91: int show_args = false;
1.95 kn 92: pid_t hlpid = (pid_t)-1;
1.68 tedu 93: int combine_cpus = 0;
1.1 downsj 94:
95: #if Default_TOPN == Infinity
1.100 kn 96: int topn_specified = false;
1.1 downsj 97: #endif
98:
1.98 kn 99: struct system_info system_info;
100: struct statics statics;
101:
1.20 deraadt 102: /*
103: * these defines enumerate the "strchr"s of the commands in
104: * command_chars
105: */
1.1 downsj 106: #define CMD_redraw 0
107: #define CMD_update 1
108: #define CMD_quit 2
109: #define CMD_help1 3
110: #define CMD_help2 4
1.20 deraadt 111: #define CMD_OSLIMIT 4 /* terminals with OS can only handle commands */
112: #define CMD_errors 5 /* less than or equal to CMD_OSLIMIT */
1.1 downsj 113: #define CMD_number1 6
114: #define CMD_number2 7
115: #define CMD_delay 8
116: #define CMD_displays 9
117: #define CMD_kill 10
118: #define CMD_renice 11
1.32 deraadt 119: #define CMD_idletog 12
120: #define CMD_idletog2 13
1.1 downsj 121: #define CMD_user 14
1.12 fgsch 122: #define CMD_system 15
1.32 deraadt 123: #define CMD_order 16
1.35 otto 124: #define CMD_pid 17
1.40 markus 125: #define CMD_command 18
1.41 tedu 126: #define CMD_threads 19
1.45 otto 127: #define CMD_grep 20
1.47 otto 128: #define CMD_add 21
1.51 otto 129: #define CMD_hl 22
1.68 tedu 130: #define CMD_cpus 23
1.102 zhuk 131: #define CMD_down 24
132: #define CMD_up 25
133: #define CMD_pagedown 26
134: #define CMD_pageup 27
1.104 kn 135: #define CMD_grep2 28
1.106 ! kn 136: #define CMD_rtableid 29
! 137: #define CMD_rtable 30
1.1 downsj 138:
1.27 deraadt 139: static void
1.20 deraadt 140: usage(void)
141: {
1.22 deraadt 142: extern char *__progname;
143:
1.20 deraadt 144: fprintf(stderr,
1.106 ! kn 145: "usage: %s [-1bCHIinqStu] [-d count] [-g string] [-o [-]field] "
1.105 kn 146: "[-p pid] [-s time]\n\t[-T [-]rtable] [-U [-]user] [number]\n",
1.22 deraadt 147: __progname);
1.20 deraadt 148: }
149:
1.95 kn 150: static int
1.98 kn 151: getorder(char *field)
152: {
153: int i, r = field[0] == '-';
154:
155: i = string_index(r ? field + 1 : field, statics.order_names);
156: if (i != -1)
157: rev_order = r;
158:
159: return i;
160: }
161:
162: static int
1.95 kn 163: filteruser(char buf[])
164: {
1.96 kn 165: const char *errstr;
1.95 kn 166: char *bufp = buf;
167: uid_t *uidp;
1.96 kn 168: uid_t uid;
1.95 kn 169:
170: if (bufp[0] == '-') {
171: bufp++;
172: uidp = &ps.huid;
173: ps.uid = (pid_t)-1;
174: } else {
175: uidp = &ps.uid;
176: ps.huid = (pid_t)-1;
177: }
178:
1.96 kn 179: if (uid_from_user(bufp, uidp) == 0)
180: return 0;
181:
182: uid = strtonum(bufp, 0, UID_MAX, &errstr);
183: if (errstr == NULL && user_from_uid(uid, 1) != NULL) {
184: *uidp = uid;
185: return 0;
186: }
187:
188: return -1;
1.95 kn 189: }
190:
191: static int
192: filterpid(char buf[], int hl)
193: {
194: const char *errstr;
195: int pid;
196:
197: pid = strtonum(buf, 0, INT_MAX, &errstr);
198: if (errstr != NULL || !find_pid(pid))
199: return -1;
200:
1.100 kn 201: if (hl)
1.95 kn 202: hlpid = (pid_t)pid;
203: else {
1.100 kn 204: if (!ps.system)
205: old_system = false;
1.95 kn 206: ps.pid = (pid_t)pid;
1.100 kn 207: ps.system = true;
1.95 kn 208: }
209:
210: return 0;
211: }
212:
1.105 kn 213: static int
214: filterrtable(char buf[])
215: {
216: const char *errstr;
217: char *bufp = buf;
218: uint32_t *rtableidp;
219: uint32_t rtableid;
220:
221: if (bufp[0] == '-') {
222: bufp++;
223: rtableidp = &ps.hrtableid;
224: ps.rtableid = -1;
225: } else {
226: rtableidp = &ps.rtableid;
227: ps.hrtableid = -1;
228: }
229:
230: rtableid = strtonum(bufp, 0, RT_TABLEID_MAX, &errstr);
231: if (errstr == NULL) {
232: *rtableidp = rtableid;
233: return 0;
234: }
235:
236: return -1;
237: }
238:
1.27 deraadt 239: static void
1.20 deraadt 240: parseargs(int ac, char **av)
241: {
242: char *endp;
243: int i;
244:
1.106 ! kn 245: while ((i = getopt(ac, av, "1SHICbinqus:d:p:U:o:g:T:t")) != -1) {
1.20 deraadt 246: switch (i) {
1.68 tedu 247: case '1':
248: combine_cpus = 1;
249: break;
1.44 otto 250: case 'C':
1.100 kn 251: show_args = true;
1.44 otto 252: break;
1.20 deraadt 253: case 'u': /* toggle uid/username display */
254: do_unames = !do_unames;
255: break;
256:
257: case 'U': /* display only username's processes */
1.95 kn 258: if (filteruser(optarg) == -1)
1.61 otto 259: new_message(MT_delayed, "%s: unknown user",
260: optarg);
1.20 deraadt 261: break;
1.1 downsj 262:
1.95 kn 263: case 'p': /* display only process id */
1.100 kn 264: if (filterpid(optarg, false) == -1)
1.61 otto 265: new_message(MT_delayed, "%s: unknown pid",
266: optarg);
1.35 otto 267: break;
268:
1.20 deraadt 269: case 'S': /* show system processes */
1.67 jmc 270: ps.system = !ps.system;
271: old_system = !old_system;
1.20 deraadt 272: break;
273:
1.76 jsing 274: case 'H': /* show threads */
1.100 kn 275: ps.threads = true;
276: old_threads = true;
1.41 tedu 277: break;
278:
1.20 deraadt 279: case 'I': /* show idle processes */
280: ps.idle = !ps.idle;
281: break;
282:
283: case 'i': /* go interactive regardless */
1.100 kn 284: interactive = true;
1.20 deraadt 285: break;
286:
287: case 'n': /* batch, or non-interactive */
288: case 'b':
1.100 kn 289: interactive = false;
1.20 deraadt 290: break;
291:
292: case 'd': /* number of displays to show */
293: if ((i = atoiwi(optarg)) != Invalid && i != 0) {
294: displays = i;
1.66 sthen 295: if (displays == 1)
1.100 kn 296: interactive = false;
1.20 deraadt 297: break;
1.32 deraadt 298: }
1.60 otto 299: new_message(MT_delayed,
300: "warning: display count should be positive "
1.22 deraadt 301: "-- option ignored");
1.20 deraadt 302: break;
303:
304: case 's':
305: delay = strtod(optarg, &endp);
306:
1.59 otto 307: if (delay >= 0 && delay <= 1000000 && *endp == '\0')
1.20 deraadt 308: break;
309:
1.60 otto 310: new_message(MT_delayed,
311: "warning: delay should be a non-negative number"
1.22 deraadt 312: " -- using default");
1.20 deraadt 313: delay = Default_DELAY;
314: break;
315:
316: case 'q': /* be quick about it */
317: /* only allow this if user is really root */
318: if (getuid() == 0) {
319: /* be very un-nice! */
320: (void) nice(-20);
321: break;
322: }
1.60 otto 323: new_message(MT_delayed,
324: "warning: `-q' option can only be used by root");
1.20 deraadt 325: break;
326:
327: case 'o': /* select sort order */
328: order_name = optarg;
329: break;
330:
1.45 otto 331: case 'g': /* grep command name */
1.74 lum 332: free(ps.command);
1.75 deraadt 333: if ((ps.command = strdup(optarg)) == NULL)
1.74 lum 334: err(1, NULL);
1.45 otto 335: break;
336:
1.105 kn 337: case 'T':
338: if (filterrtable(optarg) == -1)
339: new_message(MT_delayed,
340: "%s: invalid routing table", optarg);
341: break;
342:
1.106 ! kn 343: case 't':
! 344: ps.rtable = true;
! 345: break;
! 346:
1.20 deraadt 347: default:
348: usage();
349: exit(1);
1.1 downsj 350: }
1.20 deraadt 351: }
1.82 dlg 352:
1.97 cheloha 353: i = getncpuonline();
1.82 dlg 354: if (i == -1)
355: err(1, NULL);
356:
357: if (i > 8)
358: combine_cpus = 1;
1.1 downsj 359:
1.20 deraadt 360: /* get count of top processes to display (if any) */
361: if (optind < ac) {
362: if ((topn = atoiwi(av[optind])) == Invalid) {
1.60 otto 363: new_message(MT_delayed,
364: "warning: process count should "
1.49 otto 365: "be a non-negative number -- using default");
1.46 otto 366: topn = Infinity;
1.1 downsj 367: }
1.20 deraadt 368: #if Default_TOPN == Infinity
1.1 downsj 369: else
1.100 kn 370: topn_specified = true;
1.20 deraadt 371: #endif
372: }
373: }
1.1 downsj 374:
1.20 deraadt 375: int
376: main(int argc, char *argv[])
377: {
1.106 ! kn 378: char *header_text, *env_top;
! 379: char *uname_field = "USERNAME", *thread_field = " TID";
! 380: char *wait_field = "WAIT ", *rtable_field = " RTABLE";
1.92 millert 381: const char *(*get_userid)(uid_t, int) = user_from_uid;
1.77 pirofti 382: char **preset_argv = NULL, **av = argv;
1.97 cheloha 383: int preset_argc = 0, ac = argc, active_procs, i, ncpuonline_now;
1.20 deraadt 384: sigset_t mask, oldmask;
385: time_t curr_time;
1.99 kn 386: struct handle *processes;
1.1 downsj 387:
1.20 deraadt 388: /* set the buffer for stdout */
389: #ifdef DEBUG
1.87 tedu 390: setvbuf(stdout, NULL, _IONBUF, 0);
1.1 downsj 391: #else
1.87 tedu 392: setvbuf(stdout, stdoutbuf, _IOFBF, sizeof stdoutbuf);
1.1 downsj 393: #endif
394:
1.20 deraadt 395: /* initialize some selection options */
1.100 kn 396: ps.idle = true;
397: ps.system = false;
1.21 millert 398: ps.uid = (uid_t)-1;
1.78 brynet 399: ps.huid = (uid_t)-1;
1.35 otto 400: ps.pid = (pid_t)-1;
1.106 ! kn 401: ps.rtable = false;
1.105 kn 402: ps.rtableid = -1;
403: ps.hrtableid = -1;
1.20 deraadt 404: ps.command = NULL;
405:
406: /* get preset options from the environment */
407: if ((env_top = getenv("TOP")) != NULL) {
408: av = preset_argv = argparse(env_top, &preset_argc);
409: ac = preset_argc;
410:
411: /*
412: * set the dummy argument to an explanatory message, in case
413: * getopt encounters a bad argument
414: */
415: preset_argv[0] = "while processing environment";
416: }
417: /* process options */
418: do {
419: /*
420: * if we're done doing the presets, then process the real
421: * arguments
422: */
423: if (preset_argc == 0) {
424: ac = argc;
425: av = argv;
426: optind = 1;
427: }
428: parseargs(ac, av);
429: i = preset_argc;
430: preset_argc = 0;
431: } while (i != 0);
1.84 deraadt 432:
1.88 espie 433: if (pledge("stdio rpath getpw tty proc ps vminfo", NULL) == -1)
1.84 deraadt 434: err(1, "pledge");
1.20 deraadt 435:
436: /* set constants for username/uid display correctly */
437: if (!do_unames) {
438: uname_field = " UID ";
1.26 millert 439: get_userid = format_uid;
1.20 deraadt 440: }
441: /* initialize the kernel memory interface */
442: if (machine_init(&statics) == -1)
1.1 downsj 443: exit(1);
1.20 deraadt 444:
445: /* determine sorting order index, if necessary */
446: if (order_name != NULL) {
1.98 kn 447: if ((order_index = getorder(order_name)) == -1) {
448: new_message(MT_delayed,
449: " %s: unrecognized sorting order", order_name);
1.62 otto 450: order_index = 0;
1.20 deraadt 451: }
1.1 downsj 452: }
453:
1.20 deraadt 454: /* initialize termcap */
455: init_termcap(interactive);
456:
457: /* initialize display interface */
1.58 otto 458: max_topn = display_init(&statics);
459:
1.20 deraadt 460: /* print warning if user requested more processes than we can display */
1.60 otto 461: if (topn > max_topn)
462: new_message(MT_delayed,
463: "warning: this terminal can only display %d processes",
1.22 deraadt 464: max_topn);
1.20 deraadt 465: /* adjust for topn == Infinity */
466: if (topn == Infinity) {
467: /*
468: * For smart terminals, infinity really means everything that can
469: * be displayed, or Largest.
470: * On dumb terminals, infinity means every process in the system!
471: * We only really want to do that if it was explicitly specified.
472: * This is always the case when "Default_TOPN != Infinity". But if
473: * topn wasn't explicitly specified and we are on a dumb terminal
474: * and the default is Infinity, then (and only then) we use
475: * "Nominal_TOPN" instead.
476: */
1.1 downsj 477: #if Default_TOPN == Infinity
1.20 deraadt 478: topn = smart_terminal ? Largest :
479: (topn_specified ? Largest : Nominal_TOPN);
480: #else
481: topn = Largest;
1.1 downsj 482: #endif
483: }
1.20 deraadt 484: /* set header display accordingly */
485: display_header(topn > 0);
1.1 downsj 486:
1.20 deraadt 487: /* determine interactive state */
1.100 kn 488: if (interactive == -1)
1.20 deraadt 489: interactive = smart_terminal;
1.1 downsj 490:
1.20 deraadt 491: /* if # of displays not specified, fill it in */
492: if (displays == 0)
493: displays = smart_terminal ? Infinity : 1;
1.1 downsj 494:
495: /*
1.20 deraadt 496: * block interrupt signals while setting up the screen and the
497: * handlers
1.1 downsj 498: */
1.20 deraadt 499: sigemptyset(&mask);
500: sigaddset(&mask, SIGINT);
501: sigaddset(&mask, SIGQUIT);
502: sigaddset(&mask, SIGTSTP);
503: sigprocmask(SIG_BLOCK, &mask, &oldmask);
1.57 otto 504: if (interactive)
505: init_screen();
1.90 deraadt 506: if (pledge("stdio getpw tty proc ps vminfo", NULL) == -1)
507: err(1, "pledge");
1.20 deraadt 508: (void) signal(SIGINT, leave);
1.30 deraadt 509: siginterrupt(SIGINT, 1);
1.20 deraadt 510: (void) signal(SIGQUIT, leave);
511: (void) signal(SIGTSTP, tstop);
1.51 otto 512: if (smart_terminal)
513: (void) signal(SIGWINCH, sigwinch);
1.20 deraadt 514: sigprocmask(SIG_SETMASK, &oldmask, NULL);
1.7 deraadt 515: restart:
1.1 downsj 516:
1.20 deraadt 517: /*
518: * main loop -- repeat while display count is positive or while it
519: * indicates infinity (by being -1)
520: */
521: while ((displays == -1) || (displays-- > 0)) {
1.70 otto 522: if (winchflag) {
523: /*
524: * reascertain the screen
525: * dimensions
526: */
527: get_screensize();
528: resizeterm(screen_length, screen_width + 1);
529:
530: /* tell display to resize */
531: max_topn = display_resize();
532:
533: /* reset the signal handler */
534: (void) signal(SIGWINCH, sigwinch);
535:
536: reset_display();
537: winchflag = 0;
538: }
539:
1.20 deraadt 540: /* get the current stats */
541: get_system_info(&system_info);
542:
1.97 cheloha 543: /*
544: * don't display stats for offline CPUs: resize if we're
545: * interactive and CPUs have toggled on or offline
546: */
547: if (interactive && !combine_cpus) {
548: for (i = ncpuonline_now = 0; i < ncpu; i++)
549: if (system_info.cpuonline[i])
550: ncpuonline_now++;
551: if (ncpuonline_now != ncpuonline) {
552: max_topn = display_resize();
553: reset_display();
554: continue;
555: }
556: }
557:
1.20 deraadt 558: /* get the current set of processes */
559: processes = get_process_info(&system_info, &ps,
560: proc_compares[order_index]);
561:
562: /* display the load averages */
1.51 otto 563: i_loadave(system_info.last_pid, system_info.load_avg);
1.20 deraadt 564:
565: /* display the current time */
566: /* this method of getting the time SHOULD be fairly portable */
567: time(&curr_time);
568: i_timeofday(&curr_time);
569:
1.80 guenther 570: /* display process/threads state breakdown */
571: i_procstates(system_info.p_total, system_info.procstates,
572: ps.threads);
1.20 deraadt 573:
574: /* display the cpu state percentage breakdown */
1.97 cheloha 575: i_cpustates(system_info.cpustates, system_info.cpuonline);
1.1 downsj 576:
1.20 deraadt 577: /* display memory stats */
1.51 otto 578: i_memory(system_info.memory);
1.1 downsj 579:
1.20 deraadt 580: /* handle message area */
1.51 otto 581: i_message();
1.1 downsj 582:
1.83 mpi 583: /* get the string to use for the process area header */
1.106 ! kn 584: header_text = format_header(
! 585: ps.threads ? thread_field : uname_field,
! 586: ps.rtable ? rtable_field : wait_field);
1.83 mpi 587:
1.20 deraadt 588: /* update the header area */
1.51 otto 589: i_header(header_text);
1.20 deraadt 590:
1.63 otto 591: if (topn == Infinity) {
592: #if Default_TOPN == Infinity
593: topn = smart_terminal ? Largest :
594: (topn_specified ? Largest : Nominal_TOPN);
595: #else
596: topn = Largest;
597: #endif
598: }
599:
1.20 deraadt 600: if (topn > 0) {
601: /* determine number of processes to actually display */
602: /*
603: * this number will be the smallest of: active
604: * processes, number user requested, number current
605: * screen accommodates
606: */
607: active_procs = system_info.p_active;
608: if (active_procs > topn)
609: active_procs = topn;
610: if (active_procs > max_topn)
611: active_procs = max_topn;
1.102 zhuk 612: /* determine how many process to skip, if asked to */
613: /*
614: * this number is tweaked by user, but gets shrinked
615: * when number of active processes lowers too much
616: */
617: if (skip + active_procs > system_info.p_active)
618: skip = system_info.p_active - active_procs;
1.103 kn 619: skip_processes(processes, skip);
1.20 deraadt 620: /* now show the top "n" processes. */
1.51 otto 621: for (i = 0; i < active_procs; i++) {
622: pid_t pid;
623: char * s;
624:
1.101 kn 625: s = format_next_process(processes,
1.106 ! kn 626: ps.threads ? NULL : get_userid, ps.rtable,
! 627: &pid);
1.51 otto 628: i_process(i, s, pid == hlpid);
629: }
1.54 otto 630: }
1.20 deraadt 631:
632: /* do end-screen processing */
1.52 deraadt 633: u_endscreen();
1.20 deraadt 634:
635: /* now, flush the output buffer */
636: fflush(stdout);
637:
1.51 otto 638: if (smart_terminal)
639: refresh();
640:
1.20 deraadt 641: /* only do the rest if we have more displays to show */
642: if (displays) {
643: /* switch out for new display on smart terminals */
1.100 kn 644: no_command = true;
1.20 deraadt 645: if (!interactive) {
646: /* set up alarm */
647: (void) signal(SIGALRM, onalrm);
648: (void) alarm((unsigned) delay);
649:
650: /* wait for the rest of it .... */
651: pause();
1.42 otto 652: if (leaveflag)
653: exit(0);
654: if (tstopflag) {
655: (void) signal(SIGTSTP, SIG_DFL);
656: (void) kill(0, SIGTSTP);
657: /* reset the signal handler */
658: (void) signal(SIGTSTP, tstop);
659: tstopflag = 0;
660: }
1.20 deraadt 661: } else {
662: while (no_command)
663: if (rundisplay())
664: goto restart;
665: }
666: }
667: }
1.1 downsj 668:
1.20 deraadt 669: quit(0);
670: /* NOTREACHED */
671: return (0);
672: }
1.7 deraadt 673:
1.20 deraadt 674: int
675: rundisplay(void)
676: {
1.72 lum 677: static char tempbuf[TEMPBUFSIZE];
1.20 deraadt 678: sigset_t mask;
679: char ch, *iptr;
680: int change, i;
1.28 deraadt 681: struct pollfd pfd[1];
1.106 ! kn 682: static char command_chars[] = "\f qh?en#sdkriIuSopCHg+P109)(/Tt";
1.7 deraadt 683:
1.20 deraadt 684: /*
685: * assume valid command unless told
686: * otherwise
687: */
1.100 kn 688: no_command = false;
1.7 deraadt 689:
1.20 deraadt 690: /*
691: * set up arguments for select with
692: * timeout
693: */
1.28 deraadt 694: pfd[0].fd = STDIN_FILENO;
695: pfd[0].events = POLLIN;
1.20 deraadt 696:
1.42 otto 697: if (leaveflag)
698: quit(0);
1.20 deraadt 699: if (tstopflag) {
700: /* move to the lower left */
701: end_screen();
702: fflush(stdout);
703:
704: /*
705: * default the signal handler
706: * action
707: */
708: (void) signal(SIGTSTP, SIG_DFL);
709:
710: /*
711: * unblock the signal and
712: * send ourselves one
713: */
714: sigemptyset(&mask);
715: sigaddset(&mask, SIGTSTP);
716: sigprocmask(SIG_UNBLOCK, &mask, NULL);
717: (void) kill(0, SIGTSTP);
718:
719: /* reset the signal handler */
720: (void) signal(SIGTSTP, tstop);
721:
722: /* reinit screen */
723: reinit_screen();
724: reset_display();
725: tstopflag = 0;
726: return 1;
727: }
728: /*
729: * wait for either input or the end
730: * of the delay period
731: */
1.81 millert 732: if (poll(pfd, 1, (int)(delay * 1000)) > 0) {
1.20 deraadt 733: char *errmsg;
1.30 deraadt 734: ssize_t len;
1.81 millert 735:
736: if ((pfd[0].revents & (POLLERR|POLLHUP|POLLNVAL)))
737: exit(1);
1.20 deraadt 738:
739: clear_message();
740:
741: /*
742: * now read it and convert to
743: * command strchr
744: */
1.30 deraadt 745: while (1) {
1.36 deraadt 746: len = read(STDIN_FILENO, &ch, 1);
1.30 deraadt 747: if (len == -1 && errno == EINTR)
748: continue;
749: if (len == 0)
750: exit(1);
751: break;
752: }
1.20 deraadt 753: if ((iptr = strchr(command_chars, ch)) == NULL) {
1.1 downsj 754: /* illegal command */
755: new_message(MT_standout, " Command not understood");
1.51 otto 756: putr();
1.100 kn 757: no_command = true;
1.20 deraadt 758: fflush(stdout);
759: return (0);
760: }
761:
762: change = iptr - command_chars;
763:
764: switch (change) {
765: case CMD_redraw: /* redraw screen */
766: reset_display();
767: break;
768:
769: case CMD_update: /* merely update display */
770: /*
771: * is the load average high?
772: */
773: if (system_info.load_avg[0] > LoadMax) {
774: /* yes, go home for visual feedback */
775: go_home();
776: fflush(stdout);
1.1 downsj 777: }
1.20 deraadt 778: break;
779:
780: case CMD_quit: /* quit */
781: quit(0);
782: break;
783:
784: case CMD_help1: /* help */
785: case CMD_help2:
786: clear();
787: show_help();
1.51 otto 788: anykey();
789: clear();
1.20 deraadt 790: break;
791:
792: case CMD_errors: /* show errors */
793: if (error_count() == 0) {
794: new_message(MT_standout,
795: " Currently no errors to report.");
1.51 otto 796: putr();
1.100 kn 797: no_command = true;
1.20 deraadt 798: } else {
1.1 downsj 799: clear();
1.20 deraadt 800: show_errors();
1.51 otto 801: anykey();
802: clear();
1.20 deraadt 803: }
804: break;
805:
806: case CMD_number1: /* new number */
807: case CMD_number2:
808: new_message(MT_standout,
809: "Number of processes to show: ");
1.63 otto 810:
811: if (readline(tempbuf, 8) > 0) {
1.73 lum 812: if ((i = atoiwi(tempbuf)) != Invalid) {
1.63 otto 813: if (i > max_topn) {
1.65 otto 814: new_message(MT_standout |
815: MT_delayed,
1.63 otto 816: " This terminal can only "
817: "display %d processes.",
818: max_topn);
819: putr();
1.65 otto 820: }
821: if ((i > topn || i == Infinity)
1.64 otto 822: && topn == 0) {
1.63 otto 823: /* redraw the header */
1.100 kn 824: display_header(true);
1.65 otto 825: } else if (i == 0)
1.100 kn 826: display_header(false);
1.63 otto 827: topn = i;
828: } else {
829: new_message(MT_standout,
1.65 otto 830: "Processes should be a "
831: "non-negative number");
1.89 deraadt 832: putr();
1.100 kn 833: no_command = true;
1.20 deraadt 834: }
1.63 otto 835: } else
836: clear_message();
1.20 deraadt 837: break;
838:
839: case CMD_delay: /* new seconds delay */
840: new_message(MT_standout, "Seconds to delay: ");
1.63 otto 841: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.20 deraadt 842: char *endp;
1.56 otto 843: double newdelay = strtod(tempbuf, &endp);
1.20 deraadt 844:
1.71 lum 845: if (newdelay >= 0 && newdelay <= 1000000 &&
1.48 otto 846: *endp == '\0') {
1.16 hugh 847: delay = newdelay;
1.48 otto 848: } else {
849: new_message(MT_standout,
850: "Delay should be a non-negative number");
1.51 otto 851: putr();
1.100 kn 852: no_command = true;
1.48 otto 853: }
854:
855: } else
856: clear_message();
1.20 deraadt 857: break;
858:
859: case CMD_displays: /* change display count */
860: new_message(MT_standout,
861: "Displays to show (currently %s): ",
862: displays == -1 ? "infinite" :
863: itoa(displays));
864:
1.63 otto 865: if (readline(tempbuf, 10) > 0) {
1.73 lum 866: if ((i = atoiwi(tempbuf)) != Invalid) {
1.63 otto 867: if (i == 0)
868: quit(0);
869: displays = i;
870: } else {
871: new_message(MT_standout,
872: "Displays should be a non-negative number");
873: putr();
1.100 kn 874: no_command = true;
1.63 otto 875: }
876: } else
877: clear_message();
1.20 deraadt 878: break;
879:
880: case CMD_kill: /* kill program */
881: new_message(0, "kill ");
1.63 otto 882: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 883: if ((errmsg = kill_procs(tempbuf)) != NULL) {
1.4 millert 884: new_message(MT_standout, "%s", errmsg);
1.51 otto 885: putr();
1.100 kn 886: no_command = true;
1.1 downsj 887: }
1.20 deraadt 888: } else
889: clear_message();
890: break;
891:
892: case CMD_renice: /* renice program */
893: new_message(0, "renice ");
1.63 otto 894: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 895: if ((errmsg = renice_procs(tempbuf)) != NULL) {
1.4 millert 896: new_message(MT_standout, "%s", errmsg);
1.51 otto 897: putr();
1.100 kn 898: no_command = true;
1.1 downsj 899: }
1.20 deraadt 900: } else
901: clear_message();
902: break;
1.1 downsj 903:
1.20 deraadt 904: case CMD_idletog:
905: case CMD_idletog2:
906: ps.idle = !ps.idle;
907: new_message(MT_standout | MT_delayed,
908: " %sisplaying idle processes.",
909: ps.idle ? "D" : "Not d");
1.51 otto 910: putr();
1.20 deraadt 911: break;
1.1 downsj 912:
1.20 deraadt 913: case CMD_user:
914: new_message(MT_standout,
915: "Username to show: ");
1.63 otto 916: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.78 brynet 917: if ((tempbuf[0] == '+' || tempbuf[0] == '-') &&
1.56 otto 918: tempbuf[1] == '\0') {
1.21 millert 919: ps.uid = (uid_t)-1;
1.78 brynet 920: ps.huid = (uid_t)-1;
1.95 kn 921: } else if (filteruser(tempbuf) == -1) {
922: new_message(MT_standout,
923: " %s: unknown user",
924: tempbuf[0] == '-' ? tempbuf + 1 :
925: tempbuf);
1.100 kn 926: no_command = true;
1.78 brynet 927: }
1.51 otto 928: putr();
1.20 deraadt 929: } else
930: clear_message();
931: break;
1.12 fgsch 932:
1.20 deraadt 933: case CMD_system:
934: ps.system = !ps.system;
1.35 otto 935: old_system = ps.system;
1.20 deraadt 936: new_message(MT_standout | MT_delayed,
937: " %sisplaying system processes.",
938: ps.system ? "D" : "Not d");
939: break;
940:
941: case CMD_order:
942: new_message(MT_standout,
943: "Order to sort: ");
1.63 otto 944: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.98 kn 945: if ((i = getorder(tempbuf)) == -1) {
1.20 deraadt 946: new_message(MT_standout,
947: " %s: unrecognized sorting order",
1.98 kn 948: tempbuf[0] == '-' ? tempbuf + 1 :
1.56 otto 949: tempbuf);
1.100 kn 950: no_command = true;
1.20 deraadt 951: } else
1.1 downsj 952: order_index = i;
1.51 otto 953: putr();
1.35 otto 954: } else
955: clear_message();
956: break;
957:
958: case CMD_pid:
1.37 jaredy 959: new_message(MT_standout, "Process ID to show: ");
1.63 otto 960: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 961: if (tempbuf[0] == '+' &&
962: tempbuf[1] == '\0') {
1.35 otto 963: ps.pid = (pid_t)-1;
964: ps.system = old_system;
1.95 kn 965: } else if (filterpid(tempbuf, 0) == -1) {
966: new_message(MT_standout,
967: " %s: unknown pid", tempbuf);
1.100 kn 968: no_command = true;
1.35 otto 969: }
1.51 otto 970: putr();
1.20 deraadt 971: } else
972: clear_message();
1.40 markus 973: break;
974:
975: case CMD_command:
1.100 kn 976: show_args = !show_args;
1.41 tedu 977: break;
1.89 deraadt 978:
1.41 tedu 979: case CMD_threads:
980: ps.threads = !ps.threads;
981: old_threads = ps.threads;
982: new_message(MT_standout | MT_delayed,
983: " %sisplaying threads.",
984: ps.threads ? "D" : "Not d");
1.45 otto 985: break;
986:
987: case CMD_grep:
1.104 kn 988: case CMD_grep2:
1.45 otto 989: new_message(MT_standout,
990: "Grep command name: ");
1.63 otto 991: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.45 otto 992: free(ps.command);
1.56 otto 993: if (tempbuf[0] == '+' &&
994: tempbuf[1] == '\0')
1.45 otto 995: ps.command = NULL;
1.95 kn 996: else if ((ps.command = strdup(tempbuf)) == NULL)
997: err(1, NULL);
1.51 otto 998: putr();
999: } else
1000: clear_message();
1001: break;
1002:
1003: case CMD_hl:
1.53 otto 1004: new_message(MT_standout, "Process ID to highlight: ");
1.63 otto 1005: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 1006: if (tempbuf[0] == '+' &&
1007: tempbuf[1] == '\0') {
1.95 kn 1008: hlpid = (pid_t)-1;
1.100 kn 1009: } else if (filterpid(tempbuf, true) == -1) {
1.95 kn 1010: new_message(MT_standout,
1011: " %s: unknown pid", tempbuf);
1.100 kn 1012: no_command = true;
1.51 otto 1013: }
1014: putr();
1.45 otto 1015: } else
1016: clear_message();
1.20 deraadt 1017: break;
1.1 downsj 1018:
1.47 otto 1019: case CMD_add:
1020: ps.uid = (uid_t)-1; /* uid */
1.78 brynet 1021: ps.huid = (uid_t)-1;
1.89 deraadt 1022: ps.pid = (pid_t)-1; /* pid */
1.105 kn 1023: ps.rtableid = -1; /* rtableid */
1024: ps.hrtableid = -1;
1.47 otto 1025: ps.system = old_system;
1026: ps.command = NULL; /* grep */
1.95 kn 1027: hlpid = (pid_t)-1;
1.47 otto 1028: break;
1.68 tedu 1029: case CMD_cpus:
1030: combine_cpus = !combine_cpus;
1031: max_topn = display_resize();
1032: reset_display();
1.102 zhuk 1033: break;
1034: case CMD_down:
1035: skip++;
1036: break;
1037: case CMD_up:
1038: if (skip > 0)
1039: skip--;
1040: break;
1041: case CMD_pagedown:
1042: skip += max_topn / 2;
1043: break;
1044: case CMD_pageup:
1045: skip -= max_topn / 2;
1046: if (skip < 0)
1047: skip = 0;
1.105 kn 1048: break;
1.106 ! kn 1049: case CMD_rtableid:
1.105 kn 1050: new_message(MT_standout,
1051: "Routing table: ");
1052: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1053: if (tempbuf[0] == '+' && tempbuf[1] == '\0') {
1054: ps.rtableid = -1;
1055: ps.hrtableid = -1;
1056: } else if (filterrtable(tempbuf) == -1) {
1057: new_message(MT_standout,
1058: " %s: invalid routing table",
1059: tempbuf[0] == '-' ? tempbuf + 1 :
1060: tempbuf);
1061: no_command = true;
1062: }
1063: putr();
1064: } else
1065: clear_message();
1.106 ! kn 1066: break;
! 1067: case CMD_rtable:
! 1068: ps.rtable = !ps.rtable;
! 1069: new_message(MT_standout | MT_delayed,
! 1070: " %sisplaying routing tables.",
! 1071: ps.rtable ? "D" : "Not d");
1.68 tedu 1072: break;
1.20 deraadt 1073: default:
1074: new_message(MT_standout, " BAD CASE IN SWITCH!");
1.51 otto 1075: putr();
1.1 downsj 1076: }
1077: }
1078:
1.20 deraadt 1079: /* flush out stuff that may have been written */
1080: fflush(stdout);
1081: return 0;
1.1 downsj 1082: }
1083:
1.20 deraadt 1084:
1.1 downsj 1085: /*
1086: * reset_display() - reset all the display routine pointers so that entire
1087: * screen will get redrawn.
1088: */
1.19 pvalchev 1089: static void
1090: reset_display(void)
1.1 downsj 1091: {
1.51 otto 1092: if (smart_terminal) {
1093: clear();
1094: refresh();
1095: }
1.1 downsj 1096: }
1097:
1.34 deraadt 1098: /* ARGSUSED */
1.19 pvalchev 1099: void
1.20 deraadt 1100: leave(int signo)
1.1 downsj 1101: {
1.20 deraadt 1102: leaveflag = 1;
1.1 downsj 1103: }
1104:
1.34 deraadt 1105: /* ARGSUSED */
1.19 pvalchev 1106: void
1.20 deraadt 1107: tstop(int signo)
1.1 downsj 1108: {
1.20 deraadt 1109: tstopflag = 1;
1.1 downsj 1110: }
1111:
1.34 deraadt 1112: /* ARGSUSED */
1.19 pvalchev 1113: void
1.51 otto 1114: sigwinch(int signo)
1.1 downsj 1115: {
1.20 deraadt 1116: winchflag = 1;
1.1 downsj 1117: }
1118:
1.34 deraadt 1119: /* ARGSUSED */
1.19 pvalchev 1120: void
1.20 deraadt 1121: onalrm(int signo)
1.1 downsj 1122: {
1123: }
1124:
1.19 pvalchev 1125: void
1.20 deraadt 1126: quit(int ret)
1.1 downsj 1127: {
1.20 deraadt 1128: end_screen();
1129: exit(ret);
1.1 downsj 1130: }