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1.105 ! kn 1: /* $OpenBSD: top.c,v 1.104 2020/07/26 21:59:16 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
1.105 ! kn 136: #define CMD_rtable 29
1.1 downsj 137:
1.27 deraadt 138: static void
1.20 deraadt 139: usage(void)
140: {
1.22 deraadt 141: extern char *__progname;
142:
1.20 deraadt 143: fprintf(stderr,
1.98 kn 144: "usage: %s [-1bCHIinqSu] [-d count] [-g string] [-o [-]field] "
1.105 ! kn 145: "[-p pid] [-s time]\n\t[-T [-]rtable] [-U [-]user] [number]\n",
1.22 deraadt 146: __progname);
1.20 deraadt 147: }
148:
1.95 kn 149: static int
1.98 kn 150: getorder(char *field)
151: {
152: int i, r = field[0] == '-';
153:
154: i = string_index(r ? field + 1 : field, statics.order_names);
155: if (i != -1)
156: rev_order = r;
157:
158: return i;
159: }
160:
161: static int
1.95 kn 162: filteruser(char buf[])
163: {
1.96 kn 164: const char *errstr;
1.95 kn 165: char *bufp = buf;
166: uid_t *uidp;
1.96 kn 167: uid_t uid;
1.95 kn 168:
169: if (bufp[0] == '-') {
170: bufp++;
171: uidp = &ps.huid;
172: ps.uid = (pid_t)-1;
173: } else {
174: uidp = &ps.uid;
175: ps.huid = (pid_t)-1;
176: }
177:
1.96 kn 178: if (uid_from_user(bufp, uidp) == 0)
179: return 0;
180:
181: uid = strtonum(bufp, 0, UID_MAX, &errstr);
182: if (errstr == NULL && user_from_uid(uid, 1) != NULL) {
183: *uidp = uid;
184: return 0;
185: }
186:
187: return -1;
1.95 kn 188: }
189:
190: static int
191: filterpid(char buf[], int hl)
192: {
193: const char *errstr;
194: int pid;
195:
196: pid = strtonum(buf, 0, INT_MAX, &errstr);
197: if (errstr != NULL || !find_pid(pid))
198: return -1;
199:
1.100 kn 200: if (hl)
1.95 kn 201: hlpid = (pid_t)pid;
202: else {
1.100 kn 203: if (!ps.system)
204: old_system = false;
1.95 kn 205: ps.pid = (pid_t)pid;
1.100 kn 206: ps.system = true;
1.95 kn 207: }
208:
209: return 0;
210: }
211:
1.105 ! kn 212: static int
! 213: filterrtable(char buf[])
! 214: {
! 215: const char *errstr;
! 216: char *bufp = buf;
! 217: uint32_t *rtableidp;
! 218: uint32_t rtableid;
! 219:
! 220: if (bufp[0] == '-') {
! 221: bufp++;
! 222: rtableidp = &ps.hrtableid;
! 223: ps.rtableid = -1;
! 224: } else {
! 225: rtableidp = &ps.rtableid;
! 226: ps.hrtableid = -1;
! 227: }
! 228:
! 229: rtableid = strtonum(bufp, 0, RT_TABLEID_MAX, &errstr);
! 230: if (errstr == NULL) {
! 231: *rtableidp = rtableid;
! 232: return 0;
! 233: }
! 234:
! 235: return -1;
! 236: }
! 237:
1.27 deraadt 238: static void
1.20 deraadt 239: parseargs(int ac, char **av)
240: {
241: char *endp;
242: int i;
243:
1.105 ! kn 244: while ((i = getopt(ac, av, "1SHICbinqus:d:p:U:o:g:T:")) != -1) {
1.20 deraadt 245: switch (i) {
1.68 tedu 246: case '1':
247: combine_cpus = 1;
248: break;
1.44 otto 249: case 'C':
1.100 kn 250: show_args = true;
1.44 otto 251: break;
1.20 deraadt 252: case 'u': /* toggle uid/username display */
253: do_unames = !do_unames;
254: break;
255:
256: case 'U': /* display only username's processes */
1.95 kn 257: if (filteruser(optarg) == -1)
1.61 otto 258: new_message(MT_delayed, "%s: unknown user",
259: optarg);
1.20 deraadt 260: break;
1.1 downsj 261:
1.95 kn 262: case 'p': /* display only process id */
1.100 kn 263: if (filterpid(optarg, false) == -1)
1.61 otto 264: new_message(MT_delayed, "%s: unknown pid",
265: optarg);
1.35 otto 266: break;
267:
1.20 deraadt 268: case 'S': /* show system processes */
1.67 jmc 269: ps.system = !ps.system;
270: old_system = !old_system;
1.20 deraadt 271: break;
272:
1.76 jsing 273: case 'H': /* show threads */
1.100 kn 274: ps.threads = true;
275: old_threads = true;
1.41 tedu 276: break;
277:
1.20 deraadt 278: case 'I': /* show idle processes */
279: ps.idle = !ps.idle;
280: break;
281:
282: case 'i': /* go interactive regardless */
1.100 kn 283: interactive = true;
1.20 deraadt 284: break;
285:
286: case 'n': /* batch, or non-interactive */
287: case 'b':
1.100 kn 288: interactive = false;
1.20 deraadt 289: break;
290:
291: case 'd': /* number of displays to show */
292: if ((i = atoiwi(optarg)) != Invalid && i != 0) {
293: displays = i;
1.66 sthen 294: if (displays == 1)
1.100 kn 295: interactive = false;
1.20 deraadt 296: break;
1.32 deraadt 297: }
1.60 otto 298: new_message(MT_delayed,
299: "warning: display count should be positive "
1.22 deraadt 300: "-- option ignored");
1.20 deraadt 301: break;
302:
303: case 's':
304: delay = strtod(optarg, &endp);
305:
1.59 otto 306: if (delay >= 0 && delay <= 1000000 && *endp == '\0')
1.20 deraadt 307: break;
308:
1.60 otto 309: new_message(MT_delayed,
310: "warning: delay should be a non-negative number"
1.22 deraadt 311: " -- using default");
1.20 deraadt 312: delay = Default_DELAY;
313: break;
314:
315: case 'q': /* be quick about it */
316: /* only allow this if user is really root */
317: if (getuid() == 0) {
318: /* be very un-nice! */
319: (void) nice(-20);
320: break;
321: }
1.60 otto 322: new_message(MT_delayed,
323: "warning: `-q' option can only be used by root");
1.20 deraadt 324: break;
325:
326: case 'o': /* select sort order */
327: order_name = optarg;
328: break;
329:
1.45 otto 330: case 'g': /* grep command name */
1.74 lum 331: free(ps.command);
1.75 deraadt 332: if ((ps.command = strdup(optarg)) == NULL)
1.74 lum 333: err(1, NULL);
1.45 otto 334: break;
335:
1.105 ! kn 336: case 'T':
! 337: if (filterrtable(optarg) == -1)
! 338: new_message(MT_delayed,
! 339: "%s: invalid routing table", optarg);
! 340: break;
! 341:
1.20 deraadt 342: default:
343: usage();
344: exit(1);
1.1 downsj 345: }
1.20 deraadt 346: }
1.82 dlg 347:
1.97 cheloha 348: i = getncpuonline();
1.82 dlg 349: if (i == -1)
350: err(1, NULL);
351:
352: if (i > 8)
353: combine_cpus = 1;
1.1 downsj 354:
1.20 deraadt 355: /* get count of top processes to display (if any) */
356: if (optind < ac) {
357: if ((topn = atoiwi(av[optind])) == Invalid) {
1.60 otto 358: new_message(MT_delayed,
359: "warning: process count should "
1.49 otto 360: "be a non-negative number -- using default");
1.46 otto 361: topn = Infinity;
1.1 downsj 362: }
1.20 deraadt 363: #if Default_TOPN == Infinity
1.1 downsj 364: else
1.100 kn 365: topn_specified = true;
1.20 deraadt 366: #endif
367: }
368: }
1.1 downsj 369:
1.20 deraadt 370: int
371: main(int argc, char *argv[])
372: {
373: char *uname_field = "USERNAME", *header_text, *env_top;
1.92 millert 374: const char *(*get_userid)(uid_t, int) = user_from_uid;
1.77 pirofti 375: char **preset_argv = NULL, **av = argv;
1.97 cheloha 376: int preset_argc = 0, ac = argc, active_procs, i, ncpuonline_now;
1.20 deraadt 377: sigset_t mask, oldmask;
378: time_t curr_time;
1.99 kn 379: struct handle *processes;
1.1 downsj 380:
1.20 deraadt 381: /* set the buffer for stdout */
382: #ifdef DEBUG
1.87 tedu 383: setvbuf(stdout, NULL, _IONBUF, 0);
1.1 downsj 384: #else
1.87 tedu 385: setvbuf(stdout, stdoutbuf, _IOFBF, sizeof stdoutbuf);
1.1 downsj 386: #endif
387:
1.20 deraadt 388: /* initialize some selection options */
1.100 kn 389: ps.idle = true;
390: ps.system = false;
1.21 millert 391: ps.uid = (uid_t)-1;
1.78 brynet 392: ps.huid = (uid_t)-1;
1.35 otto 393: ps.pid = (pid_t)-1;
1.105 ! kn 394: ps.rtableid = -1;
! 395: ps.hrtableid = -1;
1.20 deraadt 396: ps.command = NULL;
397:
398: /* get preset options from the environment */
399: if ((env_top = getenv("TOP")) != NULL) {
400: av = preset_argv = argparse(env_top, &preset_argc);
401: ac = preset_argc;
402:
403: /*
404: * set the dummy argument to an explanatory message, in case
405: * getopt encounters a bad argument
406: */
407: preset_argv[0] = "while processing environment";
408: }
409: /* process options */
410: do {
411: /*
412: * if we're done doing the presets, then process the real
413: * arguments
414: */
415: if (preset_argc == 0) {
416: ac = argc;
417: av = argv;
418: optind = 1;
419: }
420: parseargs(ac, av);
421: i = preset_argc;
422: preset_argc = 0;
423: } while (i != 0);
1.84 deraadt 424:
1.88 espie 425: if (pledge("stdio rpath getpw tty proc ps vminfo", NULL) == -1)
1.84 deraadt 426: err(1, "pledge");
1.20 deraadt 427:
428: /* set constants for username/uid display correctly */
429: if (!do_unames) {
430: uname_field = " UID ";
1.26 millert 431: get_userid = format_uid;
1.20 deraadt 432: }
433: /* initialize the kernel memory interface */
434: if (machine_init(&statics) == -1)
1.1 downsj 435: exit(1);
1.20 deraadt 436:
437: /* determine sorting order index, if necessary */
438: if (order_name != NULL) {
1.98 kn 439: if ((order_index = getorder(order_name)) == -1) {
440: new_message(MT_delayed,
441: " %s: unrecognized sorting order", order_name);
1.62 otto 442: order_index = 0;
1.20 deraadt 443: }
1.1 downsj 444: }
445:
1.20 deraadt 446: /* initialize termcap */
447: init_termcap(interactive);
448:
449: /* initialize display interface */
1.58 otto 450: max_topn = display_init(&statics);
451:
1.20 deraadt 452: /* print warning if user requested more processes than we can display */
1.60 otto 453: if (topn > max_topn)
454: new_message(MT_delayed,
455: "warning: this terminal can only display %d processes",
1.22 deraadt 456: max_topn);
1.20 deraadt 457: /* adjust for topn == Infinity */
458: if (topn == Infinity) {
459: /*
460: * For smart terminals, infinity really means everything that can
461: * be displayed, or Largest.
462: * On dumb terminals, infinity means every process in the system!
463: * We only really want to do that if it was explicitly specified.
464: * This is always the case when "Default_TOPN != Infinity". But if
465: * topn wasn't explicitly specified and we are on a dumb terminal
466: * and the default is Infinity, then (and only then) we use
467: * "Nominal_TOPN" instead.
468: */
1.1 downsj 469: #if Default_TOPN == Infinity
1.20 deraadt 470: topn = smart_terminal ? Largest :
471: (topn_specified ? Largest : Nominal_TOPN);
472: #else
473: topn = Largest;
1.1 downsj 474: #endif
475: }
1.20 deraadt 476: /* set header display accordingly */
477: display_header(topn > 0);
1.1 downsj 478:
1.20 deraadt 479: /* determine interactive state */
1.100 kn 480: if (interactive == -1)
1.20 deraadt 481: interactive = smart_terminal;
1.1 downsj 482:
1.20 deraadt 483: /* if # of displays not specified, fill it in */
484: if (displays == 0)
485: displays = smart_terminal ? Infinity : 1;
1.1 downsj 486:
487: /*
1.20 deraadt 488: * block interrupt signals while setting up the screen and the
489: * handlers
1.1 downsj 490: */
1.20 deraadt 491: sigemptyset(&mask);
492: sigaddset(&mask, SIGINT);
493: sigaddset(&mask, SIGQUIT);
494: sigaddset(&mask, SIGTSTP);
495: sigprocmask(SIG_BLOCK, &mask, &oldmask);
1.57 otto 496: if (interactive)
497: init_screen();
1.90 deraadt 498: if (pledge("stdio getpw tty proc ps vminfo", NULL) == -1)
499: err(1, "pledge");
1.20 deraadt 500: (void) signal(SIGINT, leave);
1.30 deraadt 501: siginterrupt(SIGINT, 1);
1.20 deraadt 502: (void) signal(SIGQUIT, leave);
503: (void) signal(SIGTSTP, tstop);
1.51 otto 504: if (smart_terminal)
505: (void) signal(SIGWINCH, sigwinch);
1.20 deraadt 506: sigprocmask(SIG_SETMASK, &oldmask, NULL);
1.7 deraadt 507: restart:
1.1 downsj 508:
1.20 deraadt 509: /*
510: * main loop -- repeat while display count is positive or while it
511: * indicates infinity (by being -1)
512: */
513: while ((displays == -1) || (displays-- > 0)) {
1.70 otto 514: if (winchflag) {
515: /*
516: * reascertain the screen
517: * dimensions
518: */
519: get_screensize();
520: resizeterm(screen_length, screen_width + 1);
521:
522: /* tell display to resize */
523: max_topn = display_resize();
524:
525: /* reset the signal handler */
526: (void) signal(SIGWINCH, sigwinch);
527:
528: reset_display();
529: winchflag = 0;
530: }
531:
1.20 deraadt 532: /* get the current stats */
533: get_system_info(&system_info);
534:
1.97 cheloha 535: /*
536: * don't display stats for offline CPUs: resize if we're
537: * interactive and CPUs have toggled on or offline
538: */
539: if (interactive && !combine_cpus) {
540: for (i = ncpuonline_now = 0; i < ncpu; i++)
541: if (system_info.cpuonline[i])
542: ncpuonline_now++;
543: if (ncpuonline_now != ncpuonline) {
544: max_topn = display_resize();
545: reset_display();
546: continue;
547: }
548: }
549:
1.20 deraadt 550: /* get the current set of processes */
551: processes = get_process_info(&system_info, &ps,
552: proc_compares[order_index]);
553:
554: /* display the load averages */
1.51 otto 555: i_loadave(system_info.last_pid, system_info.load_avg);
1.20 deraadt 556:
557: /* display the current time */
558: /* this method of getting the time SHOULD be fairly portable */
559: time(&curr_time);
560: i_timeofday(&curr_time);
561:
1.80 guenther 562: /* display process/threads state breakdown */
563: i_procstates(system_info.p_total, system_info.procstates,
564: ps.threads);
1.20 deraadt 565:
566: /* display the cpu state percentage breakdown */
1.97 cheloha 567: i_cpustates(system_info.cpustates, system_info.cpuonline);
1.1 downsj 568:
1.20 deraadt 569: /* display memory stats */
1.51 otto 570: i_memory(system_info.memory);
1.1 downsj 571:
1.20 deraadt 572: /* handle message area */
1.51 otto 573: i_message();
1.1 downsj 574:
1.83 mpi 575: /* get the string to use for the process area header */
1.101 kn 576: header_text = format_header(ps.threads ? NULL : uname_field);
1.83 mpi 577:
1.20 deraadt 578: /* update the header area */
1.51 otto 579: i_header(header_text);
1.20 deraadt 580:
1.63 otto 581: if (topn == Infinity) {
582: #if Default_TOPN == Infinity
583: topn = smart_terminal ? Largest :
584: (topn_specified ? Largest : Nominal_TOPN);
585: #else
586: topn = Largest;
587: #endif
588: }
589:
1.20 deraadt 590: if (topn > 0) {
591: /* determine number of processes to actually display */
592: /*
593: * this number will be the smallest of: active
594: * processes, number user requested, number current
595: * screen accommodates
596: */
597: active_procs = system_info.p_active;
598: if (active_procs > topn)
599: active_procs = topn;
600: if (active_procs > max_topn)
601: active_procs = max_topn;
1.102 zhuk 602: /* determine how many process to skip, if asked to */
603: /*
604: * this number is tweaked by user, but gets shrinked
605: * when number of active processes lowers too much
606: */
607: if (skip + active_procs > system_info.p_active)
608: skip = system_info.p_active - active_procs;
1.103 kn 609: skip_processes(processes, skip);
1.20 deraadt 610: /* now show the top "n" processes. */
1.51 otto 611: for (i = 0; i < active_procs; i++) {
612: pid_t pid;
613: char * s;
614:
1.101 kn 615: s = format_next_process(processes,
616: ps.threads ? NULL : get_userid, &pid);
1.51 otto 617: i_process(i, s, pid == hlpid);
618: }
1.54 otto 619: }
1.20 deraadt 620:
621: /* do end-screen processing */
1.52 deraadt 622: u_endscreen();
1.20 deraadt 623:
624: /* now, flush the output buffer */
625: fflush(stdout);
626:
1.51 otto 627: if (smart_terminal)
628: refresh();
629:
1.20 deraadt 630: /* only do the rest if we have more displays to show */
631: if (displays) {
632: /* switch out for new display on smart terminals */
1.100 kn 633: no_command = true;
1.20 deraadt 634: if (!interactive) {
635: /* set up alarm */
636: (void) signal(SIGALRM, onalrm);
637: (void) alarm((unsigned) delay);
638:
639: /* wait for the rest of it .... */
640: pause();
1.42 otto 641: if (leaveflag)
642: exit(0);
643: if (tstopflag) {
644: (void) signal(SIGTSTP, SIG_DFL);
645: (void) kill(0, SIGTSTP);
646: /* reset the signal handler */
647: (void) signal(SIGTSTP, tstop);
648: tstopflag = 0;
649: }
1.20 deraadt 650: } else {
651: while (no_command)
652: if (rundisplay())
653: goto restart;
654: }
655: }
656: }
1.1 downsj 657:
1.20 deraadt 658: quit(0);
659: /* NOTREACHED */
660: return (0);
661: }
1.7 deraadt 662:
1.20 deraadt 663: int
664: rundisplay(void)
665: {
1.72 lum 666: static char tempbuf[TEMPBUFSIZE];
1.20 deraadt 667: sigset_t mask;
668: char ch, *iptr;
669: int change, i;
1.28 deraadt 670: struct pollfd pfd[1];
1.105 ! kn 671: static char command_chars[] = "\f qh?en#sdkriIuSopCHg+P109)(/T";
1.7 deraadt 672:
1.20 deraadt 673: /*
674: * assume valid command unless told
675: * otherwise
676: */
1.100 kn 677: no_command = false;
1.7 deraadt 678:
1.20 deraadt 679: /*
680: * set up arguments for select with
681: * timeout
682: */
1.28 deraadt 683: pfd[0].fd = STDIN_FILENO;
684: pfd[0].events = POLLIN;
1.20 deraadt 685:
1.42 otto 686: if (leaveflag)
687: quit(0);
1.20 deraadt 688: if (tstopflag) {
689: /* move to the lower left */
690: end_screen();
691: fflush(stdout);
692:
693: /*
694: * default the signal handler
695: * action
696: */
697: (void) signal(SIGTSTP, SIG_DFL);
698:
699: /*
700: * unblock the signal and
701: * send ourselves one
702: */
703: sigemptyset(&mask);
704: sigaddset(&mask, SIGTSTP);
705: sigprocmask(SIG_UNBLOCK, &mask, NULL);
706: (void) kill(0, SIGTSTP);
707:
708: /* reset the signal handler */
709: (void) signal(SIGTSTP, tstop);
710:
711: /* reinit screen */
712: reinit_screen();
713: reset_display();
714: tstopflag = 0;
715: return 1;
716: }
717: /*
718: * wait for either input or the end
719: * of the delay period
720: */
1.81 millert 721: if (poll(pfd, 1, (int)(delay * 1000)) > 0) {
1.20 deraadt 722: char *errmsg;
1.30 deraadt 723: ssize_t len;
1.81 millert 724:
725: if ((pfd[0].revents & (POLLERR|POLLHUP|POLLNVAL)))
726: exit(1);
1.20 deraadt 727:
728: clear_message();
729:
730: /*
731: * now read it and convert to
732: * command strchr
733: */
1.30 deraadt 734: while (1) {
1.36 deraadt 735: len = read(STDIN_FILENO, &ch, 1);
1.30 deraadt 736: if (len == -1 && errno == EINTR)
737: continue;
738: if (len == 0)
739: exit(1);
740: break;
741: }
1.20 deraadt 742: if ((iptr = strchr(command_chars, ch)) == NULL) {
1.1 downsj 743: /* illegal command */
744: new_message(MT_standout, " Command not understood");
1.51 otto 745: putr();
1.100 kn 746: no_command = true;
1.20 deraadt 747: fflush(stdout);
748: return (0);
749: }
750:
751: change = iptr - command_chars;
752:
753: switch (change) {
754: case CMD_redraw: /* redraw screen */
755: reset_display();
756: break;
757:
758: case CMD_update: /* merely update display */
759: /*
760: * is the load average high?
761: */
762: if (system_info.load_avg[0] > LoadMax) {
763: /* yes, go home for visual feedback */
764: go_home();
765: fflush(stdout);
1.1 downsj 766: }
1.20 deraadt 767: break;
768:
769: case CMD_quit: /* quit */
770: quit(0);
771: break;
772:
773: case CMD_help1: /* help */
774: case CMD_help2:
775: clear();
776: show_help();
1.51 otto 777: anykey();
778: clear();
1.20 deraadt 779: break;
780:
781: case CMD_errors: /* show errors */
782: if (error_count() == 0) {
783: new_message(MT_standout,
784: " Currently no errors to report.");
1.51 otto 785: putr();
1.100 kn 786: no_command = true;
1.20 deraadt 787: } else {
1.1 downsj 788: clear();
1.20 deraadt 789: show_errors();
1.51 otto 790: anykey();
791: clear();
1.20 deraadt 792: }
793: break;
794:
795: case CMD_number1: /* new number */
796: case CMD_number2:
797: new_message(MT_standout,
798: "Number of processes to show: ");
1.63 otto 799:
800: if (readline(tempbuf, 8) > 0) {
1.73 lum 801: if ((i = atoiwi(tempbuf)) != Invalid) {
1.63 otto 802: if (i > max_topn) {
1.65 otto 803: new_message(MT_standout |
804: MT_delayed,
1.63 otto 805: " This terminal can only "
806: "display %d processes.",
807: max_topn);
808: putr();
1.65 otto 809: }
810: if ((i > topn || i == Infinity)
1.64 otto 811: && topn == 0) {
1.63 otto 812: /* redraw the header */
1.100 kn 813: display_header(true);
1.65 otto 814: } else if (i == 0)
1.100 kn 815: display_header(false);
1.63 otto 816: topn = i;
817: } else {
818: new_message(MT_standout,
1.65 otto 819: "Processes should be a "
820: "non-negative number");
1.89 deraadt 821: putr();
1.100 kn 822: no_command = true;
1.20 deraadt 823: }
1.63 otto 824: } else
825: clear_message();
1.20 deraadt 826: break;
827:
828: case CMD_delay: /* new seconds delay */
829: new_message(MT_standout, "Seconds to delay: ");
1.63 otto 830: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.20 deraadt 831: char *endp;
1.56 otto 832: double newdelay = strtod(tempbuf, &endp);
1.20 deraadt 833:
1.71 lum 834: if (newdelay >= 0 && newdelay <= 1000000 &&
1.48 otto 835: *endp == '\0') {
1.16 hugh 836: delay = newdelay;
1.48 otto 837: } else {
838: new_message(MT_standout,
839: "Delay should be a non-negative number");
1.51 otto 840: putr();
1.100 kn 841: no_command = true;
1.48 otto 842: }
843:
844: } else
845: clear_message();
1.20 deraadt 846: break;
847:
848: case CMD_displays: /* change display count */
849: new_message(MT_standout,
850: "Displays to show (currently %s): ",
851: displays == -1 ? "infinite" :
852: itoa(displays));
853:
1.63 otto 854: if (readline(tempbuf, 10) > 0) {
1.73 lum 855: if ((i = atoiwi(tempbuf)) != Invalid) {
1.63 otto 856: if (i == 0)
857: quit(0);
858: displays = i;
859: } else {
860: new_message(MT_standout,
861: "Displays should be a non-negative number");
862: putr();
1.100 kn 863: no_command = true;
1.63 otto 864: }
865: } else
866: clear_message();
1.20 deraadt 867: break;
868:
869: case CMD_kill: /* kill program */
870: new_message(0, "kill ");
1.63 otto 871: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 872: if ((errmsg = kill_procs(tempbuf)) != NULL) {
1.4 millert 873: new_message(MT_standout, "%s", errmsg);
1.51 otto 874: putr();
1.100 kn 875: no_command = true;
1.1 downsj 876: }
1.20 deraadt 877: } else
878: clear_message();
879: break;
880:
881: case CMD_renice: /* renice program */
882: new_message(0, "renice ");
1.63 otto 883: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 884: if ((errmsg = renice_procs(tempbuf)) != NULL) {
1.4 millert 885: new_message(MT_standout, "%s", errmsg);
1.51 otto 886: putr();
1.100 kn 887: no_command = true;
1.1 downsj 888: }
1.20 deraadt 889: } else
890: clear_message();
891: break;
1.1 downsj 892:
1.20 deraadt 893: case CMD_idletog:
894: case CMD_idletog2:
895: ps.idle = !ps.idle;
896: new_message(MT_standout | MT_delayed,
897: " %sisplaying idle processes.",
898: ps.idle ? "D" : "Not d");
1.51 otto 899: putr();
1.20 deraadt 900: break;
1.1 downsj 901:
1.20 deraadt 902: case CMD_user:
903: new_message(MT_standout,
904: "Username to show: ");
1.63 otto 905: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.78 brynet 906: if ((tempbuf[0] == '+' || tempbuf[0] == '-') &&
1.56 otto 907: tempbuf[1] == '\0') {
1.21 millert 908: ps.uid = (uid_t)-1;
1.78 brynet 909: ps.huid = (uid_t)-1;
1.95 kn 910: } else if (filteruser(tempbuf) == -1) {
911: new_message(MT_standout,
912: " %s: unknown user",
913: tempbuf[0] == '-' ? tempbuf + 1 :
914: tempbuf);
1.100 kn 915: no_command = true;
1.78 brynet 916: }
1.51 otto 917: putr();
1.20 deraadt 918: } else
919: clear_message();
920: break;
1.12 fgsch 921:
1.20 deraadt 922: case CMD_system:
923: ps.system = !ps.system;
1.35 otto 924: old_system = ps.system;
1.20 deraadt 925: new_message(MT_standout | MT_delayed,
926: " %sisplaying system processes.",
927: ps.system ? "D" : "Not d");
928: break;
929:
930: case CMD_order:
931: new_message(MT_standout,
932: "Order to sort: ");
1.63 otto 933: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.98 kn 934: if ((i = getorder(tempbuf)) == -1) {
1.20 deraadt 935: new_message(MT_standout,
936: " %s: unrecognized sorting order",
1.98 kn 937: tempbuf[0] == '-' ? tempbuf + 1 :
1.56 otto 938: tempbuf);
1.100 kn 939: no_command = true;
1.20 deraadt 940: } else
1.1 downsj 941: order_index = i;
1.51 otto 942: putr();
1.35 otto 943: } else
944: clear_message();
945: break;
946:
947: case CMD_pid:
1.37 jaredy 948: new_message(MT_standout, "Process ID to show: ");
1.63 otto 949: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 950: if (tempbuf[0] == '+' &&
951: tempbuf[1] == '\0') {
1.35 otto 952: ps.pid = (pid_t)-1;
953: ps.system = old_system;
1.95 kn 954: } else if (filterpid(tempbuf, 0) == -1) {
955: new_message(MT_standout,
956: " %s: unknown pid", tempbuf);
1.100 kn 957: no_command = true;
1.35 otto 958: }
1.51 otto 959: putr();
1.20 deraadt 960: } else
961: clear_message();
1.40 markus 962: break;
963:
964: case CMD_command:
1.100 kn 965: show_args = !show_args;
1.41 tedu 966: break;
1.89 deraadt 967:
1.41 tedu 968: case CMD_threads:
969: ps.threads = !ps.threads;
970: old_threads = ps.threads;
971: new_message(MT_standout | MT_delayed,
972: " %sisplaying threads.",
973: ps.threads ? "D" : "Not d");
1.45 otto 974: break;
975:
976: case CMD_grep:
1.104 kn 977: case CMD_grep2:
1.45 otto 978: new_message(MT_standout,
979: "Grep command name: ");
1.63 otto 980: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.45 otto 981: free(ps.command);
1.56 otto 982: if (tempbuf[0] == '+' &&
983: tempbuf[1] == '\0')
1.45 otto 984: ps.command = NULL;
1.95 kn 985: else if ((ps.command = strdup(tempbuf)) == NULL)
986: err(1, NULL);
1.51 otto 987: putr();
988: } else
989: clear_message();
990: break;
991:
992: case CMD_hl:
1.53 otto 993: new_message(MT_standout, "Process ID to highlight: ");
1.63 otto 994: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
1.56 otto 995: if (tempbuf[0] == '+' &&
996: tempbuf[1] == '\0') {
1.95 kn 997: hlpid = (pid_t)-1;
1.100 kn 998: } else if (filterpid(tempbuf, true) == -1) {
1.95 kn 999: new_message(MT_standout,
1000: " %s: unknown pid", tempbuf);
1.100 kn 1001: no_command = true;
1.51 otto 1002: }
1003: putr();
1.45 otto 1004: } else
1005: clear_message();
1.20 deraadt 1006: break;
1.1 downsj 1007:
1.47 otto 1008: case CMD_add:
1009: ps.uid = (uid_t)-1; /* uid */
1.78 brynet 1010: ps.huid = (uid_t)-1;
1.89 deraadt 1011: ps.pid = (pid_t)-1; /* pid */
1.105 ! kn 1012: ps.rtableid = -1; /* rtableid */
! 1013: ps.hrtableid = -1;
1.47 otto 1014: ps.system = old_system;
1015: ps.command = NULL; /* grep */
1.95 kn 1016: hlpid = (pid_t)-1;
1.47 otto 1017: break;
1.68 tedu 1018: case CMD_cpus:
1019: combine_cpus = !combine_cpus;
1020: max_topn = display_resize();
1021: reset_display();
1.102 zhuk 1022: break;
1023: case CMD_down:
1024: skip++;
1025: break;
1026: case CMD_up:
1027: if (skip > 0)
1028: skip--;
1029: break;
1030: case CMD_pagedown:
1031: skip += max_topn / 2;
1032: break;
1033: case CMD_pageup:
1034: skip -= max_topn / 2;
1035: if (skip < 0)
1036: skip = 0;
1.105 ! kn 1037: break;
! 1038: case CMD_rtable:
! 1039: new_message(MT_standout,
! 1040: "Routing table: ");
! 1041: if (readline(tempbuf, sizeof(tempbuf)) > 0) {
! 1042: if (tempbuf[0] == '+' && tempbuf[1] == '\0') {
! 1043: ps.rtableid = -1;
! 1044: ps.hrtableid = -1;
! 1045: } else if (filterrtable(tempbuf) == -1) {
! 1046: new_message(MT_standout,
! 1047: " %s: invalid routing table",
! 1048: tempbuf[0] == '-' ? tempbuf + 1 :
! 1049: tempbuf);
! 1050: no_command = true;
! 1051: }
! 1052: putr();
! 1053: } else
! 1054: clear_message();
1.68 tedu 1055: break;
1.20 deraadt 1056: default:
1057: new_message(MT_standout, " BAD CASE IN SWITCH!");
1.51 otto 1058: putr();
1.1 downsj 1059: }
1060: }
1061:
1.20 deraadt 1062: /* flush out stuff that may have been written */
1063: fflush(stdout);
1064: return 0;
1.1 downsj 1065: }
1066:
1.20 deraadt 1067:
1.1 downsj 1068: /*
1069: * reset_display() - reset all the display routine pointers so that entire
1070: * screen will get redrawn.
1071: */
1.19 pvalchev 1072: static void
1073: reset_display(void)
1.1 downsj 1074: {
1.51 otto 1075: if (smart_terminal) {
1076: clear();
1077: refresh();
1078: }
1.1 downsj 1079: }
1080:
1.34 deraadt 1081: /* ARGSUSED */
1.19 pvalchev 1082: void
1.20 deraadt 1083: leave(int signo)
1.1 downsj 1084: {
1.20 deraadt 1085: leaveflag = 1;
1.1 downsj 1086: }
1087:
1.34 deraadt 1088: /* ARGSUSED */
1.19 pvalchev 1089: void
1.20 deraadt 1090: tstop(int signo)
1.1 downsj 1091: {
1.20 deraadt 1092: tstopflag = 1;
1.1 downsj 1093: }
1094:
1.34 deraadt 1095: /* ARGSUSED */
1.19 pvalchev 1096: void
1.51 otto 1097: sigwinch(int signo)
1.1 downsj 1098: {
1.20 deraadt 1099: winchflag = 1;
1.1 downsj 1100: }
1101:
1.34 deraadt 1102: /* ARGSUSED */
1.19 pvalchev 1103: void
1.20 deraadt 1104: onalrm(int signo)
1.1 downsj 1105: {
1106: }
1107:
1.19 pvalchev 1108: void
1.20 deraadt 1109: quit(int ret)
1.1 downsj 1110: {
1.20 deraadt 1111: end_screen();
1112: exit(ret);
1.1 downsj 1113: }