xref: /freebsd/bin/ps/print.c (revision 1d386b48) 
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1990, 1993, 1994
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #if 0
33 #ifndef lint
34 static char sccsid[] = "@(#)print.c	8.6 (Berkeley) 4/16/94";
35 #endif /* not lint */
36 #endif
37 
38 #include <sys/cdefs.h>
39 #include <sys/param.h>
40 #include <sys/time.h>
41 #include <sys/resource.h>
42 #include <sys/proc.h>
43 #include <sys/stat.h>
44 
45 #include <sys/mac.h>
46 #include <sys/user.h>
47 #include <sys/sysctl.h>
48 #include <sys/vmmeter.h>
49 
50 #include <err.h>
51 #include <grp.h>
52 #include <jail.h>
53 #include <langinfo.h>
54 #include <locale.h>
55 #include <math.h>
56 #include <nlist.h>
57 #include <pwd.h>
58 #include <stddef.h>
59 #include <stdint.h>
60 #include <stdio.h>
61 #include <stdlib.h>
62 #include <string.h>
63 #include <unistd.h>
64 #include <vis.h>
65 #include <libxo/xo.h>
66 
67 #include "ps.h"
68 
69 #define	COMMAND_WIDTH	16
70 #define	ARGUMENTS_WIDTH	16
71 
72 #define	ps_pgtok(a)	(((a) * getpagesize()) / 1024)
73 
74 void
75 printheader(void)
76 {
77 	VAR *v;
78 	struct varent *vent;
79 
80 	STAILQ_FOREACH(vent, &varlist, next_ve)
81 		if (*vent->header != '\0')
82 			break;
83 	if (!vent)
84 		return;
85 
86 	STAILQ_FOREACH(vent, &varlist, next_ve) {
87 		v = vent->var;
88 		if (v->flag & LJUST) {
89 			if (STAILQ_NEXT(vent, next_ve) == NULL)	/* last one */
90 				xo_emit("{T:/%hs}", vent->header);
91 			else
92 				xo_emit("{T:/%-*hs}", v->width, vent->header);
93 		} else
94 			xo_emit("{T:/%*hs}", v->width, vent->header);
95 		if (STAILQ_NEXT(vent, next_ve) != NULL)
96 			xo_emit("{P: }");
97 	}
98 	xo_emit("\n");
99 }
100 
101 char *
102 arguments(KINFO *k, VARENT *ve)
103 {
104 	char *vis_args;
105 
106 	if ((vis_args = malloc(strlen(k->ki_args) * 4 + 1)) == NULL)
107 		xo_errx(1, "malloc failed");
108 	strvis(vis_args, k->ki_args, VIS_TAB | VIS_NL | VIS_NOSLASH);
109 
110 	if (STAILQ_NEXT(ve, next_ve) != NULL && strlen(vis_args) > ARGUMENTS_WIDTH)
111 		vis_args[ARGUMENTS_WIDTH] = '\0';
112 
113 	return (vis_args);
114 }
115 
116 char *
117 command(KINFO *k, VARENT *ve)
118 {
119 	char *vis_args, *vis_env, *str;
120 
121 	if (cflag) {
122 		/* If it is the last field, then don't pad */
123 		if (STAILQ_NEXT(ve, next_ve) == NULL) {
124 			asprintf(&str, "%s%s%s%s%s",
125 			    k->ki_d.prefix ? k->ki_d.prefix : "",
126 			    k->ki_p->ki_comm,
127 			    (showthreads && k->ki_p->ki_numthreads > 1) ? "/" : "",
128 			    (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "",
129 			    (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_moretdname : "");
130 		} else
131 			str = strdup(k->ki_p->ki_comm);
132 
133 		return (str);
134 	}
135 	if ((vis_args = malloc(strlen(k->ki_args) * 4 + 1)) == NULL)
136 		xo_errx(1, "malloc failed");
137 	strvis(vis_args, k->ki_args, VIS_TAB | VIS_NL | VIS_NOSLASH);
138 
139 	if (STAILQ_NEXT(ve, next_ve) == NULL) {
140 		/* last field */
141 
142 		if (k->ki_env) {
143 			if ((vis_env = malloc(strlen(k->ki_env) * 4 + 1))
144 			    == NULL)
145 				xo_errx(1, "malloc failed");
146 			strvis(vis_env, k->ki_env,
147 			    VIS_TAB | VIS_NL | VIS_NOSLASH);
148 		} else
149 			vis_env = NULL;
150 
151 		asprintf(&str, "%s%s%s%s",
152 		    k->ki_d.prefix ? k->ki_d.prefix : "",
153 		    vis_env ? vis_env : "",
154 		    vis_env ? " " : "",
155 		    vis_args);
156 
157 		if (vis_env != NULL)
158 			free(vis_env);
159 		free(vis_args);
160 	} else {
161 		/* ki_d.prefix & ki_env aren't shown for interim fields */
162 		str = vis_args;
163 
164 		if (strlen(str) > COMMAND_WIDTH)
165 			str[COMMAND_WIDTH] = '\0';
166 	}
167 
168 	return (str);
169 }
170 
171 char *
172 ucomm(KINFO *k, VARENT *ve)
173 {
174 	char *str;
175 
176 	if (STAILQ_NEXT(ve, next_ve) == NULL) {	/* last field, don't pad */
177 		asprintf(&str, "%s%s%s%s%s",
178 		    k->ki_d.prefix ? k->ki_d.prefix : "",
179 		    k->ki_p->ki_comm,
180 		    (showthreads && k->ki_p->ki_numthreads > 1) ? "/" : "",
181 		    (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_tdname : "",
182 		    (showthreads && k->ki_p->ki_numthreads > 1) ? k->ki_p->ki_moretdname : "");
183 	} else {
184 		if (showthreads && k->ki_p->ki_numthreads > 1)
185 			asprintf(&str, "%s/%s%s", k->ki_p->ki_comm,
186 			    k->ki_p->ki_tdname, k->ki_p->ki_moretdname);
187 		else
188 			str = strdup(k->ki_p->ki_comm);
189 	}
190 	return (str);
191 }
192 
193 char *
194 tdnam(KINFO *k, VARENT *ve __unused)
195 {
196 	char *str;
197 
198 	if (showthreads && k->ki_p->ki_numthreads > 1)
199 		asprintf(&str, "%s%s", k->ki_p->ki_tdname,
200 		    k->ki_p->ki_moretdname);
201 	else
202 		str = strdup("      ");
203 
204 	return (str);
205 }
206 
207 char *
208 logname(KINFO *k, VARENT *ve __unused)
209 {
210 
211 	if (*k->ki_p->ki_login == '\0')
212 		return (NULL);
213 	return (strdup(k->ki_p->ki_login));
214 }
215 
216 char *
217 state(KINFO *k, VARENT *ve __unused)
218 {
219 	long flag, tdflags;
220 	char *cp, *buf;
221 
222 	buf = malloc(16);
223 	if (buf == NULL)
224 		xo_errx(1, "malloc failed");
225 
226 	flag = k->ki_p->ki_flag;
227 	tdflags = k->ki_p->ki_tdflags;	/* XXXKSE */
228 	cp = buf;
229 
230 	switch (k->ki_p->ki_stat) {
231 
232 	case SSTOP:
233 		*cp = 'T';
234 		break;
235 
236 	case SSLEEP:
237 		if (tdflags & TDF_SINTR)	/* interruptible (long) */
238 			*cp = k->ki_p->ki_slptime >= MAXSLP ? 'I' : 'S';
239 		else
240 			*cp = 'D';
241 		break;
242 
243 	case SRUN:
244 	case SIDL:
245 		*cp = 'R';
246 		break;
247 
248 	case SWAIT:
249 		*cp = 'W';
250 		break;
251 
252 	case SLOCK:
253 		*cp = 'L';
254 		break;
255 
256 	case SZOMB:
257 		*cp = 'Z';
258 		break;
259 
260 	default:
261 		*cp = '?';
262 	}
263 	cp++;
264 	if (!(flag & P_INMEM))
265 		*cp++ = 'W';
266 	if (k->ki_p->ki_nice < NZERO || k->ki_p->ki_pri.pri_class == PRI_REALTIME)
267 		*cp++ = '<';
268 	else if (k->ki_p->ki_nice > NZERO || k->ki_p->ki_pri.pri_class == PRI_IDLE)
269 		*cp++ = 'N';
270 	if (flag & P_TRACED)
271 		*cp++ = 'X';
272 	if (flag & P_WEXIT && k->ki_p->ki_stat != SZOMB)
273 		*cp++ = 'E';
274 	if (flag & P_PPWAIT)
275 		*cp++ = 'V';
276 	if ((flag & P_SYSTEM) || k->ki_p->ki_lock > 0)
277 		*cp++ = 'L';
278 	if ((k->ki_p->ki_cr_flags & CRED_FLAG_CAPMODE) != 0)
279 		*cp++ = 'C';
280 	if (k->ki_p->ki_kiflag & KI_SLEADER)
281 		*cp++ = 's';
282 	if ((flag & P_CONTROLT) && k->ki_p->ki_pgid == k->ki_p->ki_tpgid)
283 		*cp++ = '+';
284 	if (flag & P_JAILED)
285 		*cp++ = 'J';
286 	*cp = '\0';
287 	return (buf);
288 }
289 
290 #define	scalepri(x)	((x) - PZERO)
291 
292 char *
293 pri(KINFO *k, VARENT *ve __unused)
294 {
295 	char *str;
296 
297 	asprintf(&str, "%d", scalepri(k->ki_p->ki_pri.pri_level));
298 	return (str);
299 }
300 
301 char *
302 upr(KINFO *k, VARENT *ve __unused)
303 {
304 	char *str;
305 
306 	asprintf(&str, "%d", scalepri(k->ki_p->ki_pri.pri_user));
307 	return (str);
308 }
309 #undef scalepri
310 
311 char *
312 username(KINFO *k, VARENT *ve __unused)
313 {
314 
315 	return (strdup(user_from_uid(k->ki_p->ki_uid, 0)));
316 }
317 
318 char *
319 egroupname(KINFO *k, VARENT *ve __unused)
320 {
321 
322 	return (strdup(group_from_gid(k->ki_p->ki_groups[0], 0)));
323 }
324 
325 char *
326 rgroupname(KINFO *k, VARENT *ve __unused)
327 {
328 
329 	return (strdup(group_from_gid(k->ki_p->ki_rgid, 0)));
330 }
331 
332 char *
333 runame(KINFO *k, VARENT *ve __unused)
334 {
335 
336 	return (strdup(user_from_uid(k->ki_p->ki_ruid, 0)));
337 }
338 
339 char *
340 tdev(KINFO *k, VARENT *ve __unused)
341 {
342 	dev_t dev;
343 	char *str;
344 
345 	dev = k->ki_p->ki_tdev;
346 	if (dev == NODEV)
347 		str = strdup("-");
348 	else
349 		asprintf(&str, "%#jx", (uintmax_t)dev);
350 
351 	return (str);
352 }
353 
354 char *
355 tname(KINFO *k, VARENT *ve __unused)
356 {
357 	dev_t dev;
358 	char *ttname, *str;
359 
360 	dev = k->ki_p->ki_tdev;
361 	if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL)
362 		str = strdup("- ");
363 	else {
364 		if (strncmp(ttname, "tty", 3) == 0 ||
365 		    strncmp(ttname, "cua", 3) == 0)
366 			ttname += 3;
367 		if (strncmp(ttname, "pts/", 4) == 0)
368 			ttname += 4;
369 		asprintf(&str, "%s%c", ttname,
370 		    k->ki_p->ki_kiflag & KI_CTTY ? ' ' : '-');
371 	}
372 
373 	return (str);
374 }
375 
376 char *
377 longtname(KINFO *k, VARENT *ve __unused)
378 {
379 	dev_t dev;
380 	const char *ttname;
381 
382 	dev = k->ki_p->ki_tdev;
383 	if (dev == NODEV || (ttname = devname(dev, S_IFCHR)) == NULL)
384 		ttname = "-";
385 
386 	return (strdup(ttname));
387 }
388 
389 char *
390 started(KINFO *k, VARENT *ve __unused)
391 {
392 	time_t then;
393 	struct tm *tp;
394 	size_t buflen = 100;
395 	char *buf;
396 
397 	if (!k->ki_valid)
398 		return (NULL);
399 
400 	buf = malloc(buflen);
401 	if (buf == NULL)
402 		xo_errx(1, "malloc failed");
403 
404 	then = k->ki_p->ki_start.tv_sec;
405 	tp = localtime(&then);
406 	if (now - k->ki_p->ki_start.tv_sec < 24 * 3600) {
407 		(void)strftime(buf, buflen, "%H:%M  ", tp);
408 	} else if (now - k->ki_p->ki_start.tv_sec < 7 * 86400) {
409 		(void)strftime(buf, buflen, "%a%H  ", tp);
410 	} else
411 		(void)strftime(buf, buflen, "%e%b%y", tp);
412 	return (buf);
413 }
414 
415 char *
416 lstarted(KINFO *k, VARENT *ve __unused)
417 {
418 	time_t then;
419 	char *buf;
420 	size_t buflen = 100;
421 
422 	if (!k->ki_valid)
423 		return (NULL);
424 
425 	buf = malloc(buflen);
426 	if (buf == NULL)
427 		xo_errx(1, "malloc failed");
428 
429 	then = k->ki_p->ki_start.tv_sec;
430 	(void)strftime(buf, buflen, "%c", localtime(&then));
431 	return (buf);
432 }
433 
434 char *
435 lockname(KINFO *k, VARENT *ve __unused)
436 {
437 	char *str;
438 
439 	if (k->ki_p->ki_kiflag & KI_LOCKBLOCK) {
440 		if (k->ki_p->ki_lockname[0] != 0)
441 			str = strdup(k->ki_p->ki_lockname);
442 		else
443 			str = strdup("???");
444 	} else
445 		str = NULL;
446 
447 	return (str);
448 }
449 
450 char *
451 wchan(KINFO *k, VARENT *ve __unused)
452 {
453 	char *str;
454 
455 	if (k->ki_p->ki_wchan) {
456 		if (k->ki_p->ki_wmesg[0] != 0)
457 			str = strdup(k->ki_p->ki_wmesg);
458 		else
459 			asprintf(&str, "%lx", (long)k->ki_p->ki_wchan);
460 	} else
461 		str = NULL;
462 
463 	return (str);
464 }
465 
466 char *
467 nwchan(KINFO *k, VARENT *ve __unused)
468 {
469 	char *str;
470 
471 	if (k->ki_p->ki_wchan)
472 		asprintf(&str, "%0lx", (long)k->ki_p->ki_wchan);
473 	else
474 		str = NULL;
475 
476 	return (str);
477 }
478 
479 char *
480 mwchan(KINFO *k, VARENT *ve __unused)
481 {
482 	char *str;
483 
484 	if (k->ki_p->ki_wchan) {
485 		if (k->ki_p->ki_wmesg[0] != 0)
486 			str = strdup(k->ki_p->ki_wmesg);
487 		else
488                         asprintf(&str, "%lx", (long)k->ki_p->ki_wchan);
489 	} else if (k->ki_p->ki_kiflag & KI_LOCKBLOCK) {
490 		if (k->ki_p->ki_lockname[0]) {
491 			str = strdup(k->ki_p->ki_lockname);
492 		} else
493 			str = strdup("???");
494 	} else
495 		str = NULL;
496 
497 	return (str);
498 }
499 
500 char *
501 vsize(KINFO *k, VARENT *ve __unused)
502 {
503 	char *str;
504 
505 	asprintf(&str, "%lu", (u_long)(k->ki_p->ki_size / 1024));
506 	return (str);
507 }
508 
509 static char *
510 printtime(KINFO *k, VARENT *ve __unused, long secs, long psecs)
511 /* psecs is "parts" of a second. first micro, then centi */
512 {
513 	static char decimal_point;
514 	char *str;
515 
516 	if (decimal_point == '\0')
517 		decimal_point = localeconv()->decimal_point[0];
518 	if (!k->ki_valid) {
519 		secs = 0;
520 		psecs = 0;
521 	} else {
522 		/* round and scale to 100's */
523 		psecs = (psecs + 5000) / 10000;
524 		secs += psecs / 100;
525 		psecs = psecs % 100;
526 	}
527 	asprintf(&str, "%ld:%02ld%c%02ld",
528 	    secs / 60, secs % 60, decimal_point, psecs);
529 	return (str);
530 }
531 
532 char *
533 cputime(KINFO *k, VARENT *ve)
534 {
535 	long secs, psecs;
536 
537 	/*
538 	 * This counts time spent handling interrupts.  We could
539 	 * fix this, but it is not 100% trivial (and interrupt
540 	 * time fractions only work on the sparc anyway).	XXX
541 	 */
542 	secs = k->ki_p->ki_runtime / 1000000;
543 	psecs = k->ki_p->ki_runtime % 1000000;
544 	if (sumrusage) {
545 		secs += k->ki_p->ki_childtime.tv_sec;
546 		psecs += k->ki_p->ki_childtime.tv_usec;
547 	}
548 	return (printtime(k, ve, secs, psecs));
549 }
550 
551 char *
552 cpunum(KINFO *k, VARENT *ve __unused)
553 {
554 	char *cpu;
555 
556 	if (k->ki_p->ki_stat == SRUN && k->ki_p->ki_oncpu != NOCPU) {
557 		asprintf(&cpu, "%d", k->ki_p->ki_oncpu);
558 	} else {
559 		asprintf(&cpu, "%d", k->ki_p->ki_lastcpu);
560 	}
561 	return (cpu);
562 }
563 
564 char *
565 systime(KINFO *k, VARENT *ve)
566 {
567 	long secs, psecs;
568 
569 	secs = k->ki_p->ki_rusage.ru_stime.tv_sec;
570 	psecs = k->ki_p->ki_rusage.ru_stime.tv_usec;
571 	if (sumrusage) {
572 		secs += k->ki_p->ki_childstime.tv_sec;
573 		psecs += k->ki_p->ki_childstime.tv_usec;
574 	}
575 	return (printtime(k, ve, secs, psecs));
576 }
577 
578 char *
579 usertime(KINFO *k, VARENT *ve)
580 {
581 	long secs, psecs;
582 
583 	secs = k->ki_p->ki_rusage.ru_utime.tv_sec;
584 	psecs = k->ki_p->ki_rusage.ru_utime.tv_usec;
585 	if (sumrusage) {
586 		secs += k->ki_p->ki_childutime.tv_sec;
587 		psecs += k->ki_p->ki_childutime.tv_usec;
588 	}
589 	return (printtime(k, ve, secs, psecs));
590 }
591 
592 char *
593 elapsed(KINFO *k, VARENT *ve __unused)
594 {
595 	time_t val;
596 	int days, hours, mins, secs;
597 	char *str;
598 
599 	if (!k->ki_valid)
600 		return (NULL);
601 	val = now - k->ki_p->ki_start.tv_sec;
602 	days = val / (24 * 60 * 60);
603 	val %= 24 * 60 * 60;
604 	hours = val / (60 * 60);
605 	val %= 60 * 60;
606 	mins = val / 60;
607 	secs = val % 60;
608 	if (days != 0)
609 		asprintf(&str, "%3d-%02d:%02d:%02d", days, hours, mins, secs);
610 	else if (hours != 0)
611 		asprintf(&str, "%02d:%02d:%02d", hours, mins, secs);
612 	else
613 		asprintf(&str, "%02d:%02d", mins, secs);
614 
615 	return (str);
616 }
617 
618 char *
619 elapseds(KINFO *k, VARENT *ve __unused)
620 {
621 	time_t val;
622 	char *str;
623 
624 	if (!k->ki_valid)
625 		return (NULL);
626 	val = now - k->ki_p->ki_start.tv_sec;
627 	asprintf(&str, "%jd", (intmax_t)val);
628 	return (str);
629 }
630 
631 double
632 getpcpu(const KINFO *k)
633 {
634 	static int failure;
635 
636 	if (!nlistread)
637 		failure = donlist();
638 	if (failure)
639 		return (0.0);
640 
641 #define	fxtofl(fixpt)	((double)(fixpt) / fscale)
642 
643 	/* XXX - I don't like this */
644 	if (k->ki_p->ki_swtime == 0 || (k->ki_p->ki_flag & P_INMEM) == 0)
645 		return (0.0);
646 	if (rawcpu)
647 		return (100.0 * fxtofl(k->ki_p->ki_pctcpu));
648 	return (100.0 * fxtofl(k->ki_p->ki_pctcpu) /
649 		(1.0 - exp(k->ki_p->ki_swtime * log(fxtofl(ccpu)))));
650 }
651 
652 char *
653 pcpu(KINFO *k, VARENT *ve __unused)
654 {
655 	char *str;
656 
657 	asprintf(&str, "%.1f", getpcpu(k));
658 	return (str);
659 }
660 
661 static double
662 getpmem(KINFO *k)
663 {
664 	static int failure;
665 	double fracmem;
666 
667 	if (!nlistread)
668 		failure = donlist();
669 	if (failure)
670 		return (0.0);
671 
672 	if ((k->ki_p->ki_flag & P_INMEM) == 0)
673 		return (0.0);
674 	/* XXX want pmap ptpages, segtab, etc. (per architecture) */
675 	/* XXX don't have info about shared */
676 	fracmem = ((double)k->ki_p->ki_rssize) / mempages;
677 	return (100.0 * fracmem);
678 }
679 
680 char *
681 pmem(KINFO *k, VARENT *ve __unused)
682 {
683 	char *str;
684 
685 	asprintf(&str, "%.1f", getpmem(k));
686 	return (str);
687 }
688 
689 char *
690 pagein(KINFO *k, VARENT *ve __unused)
691 {
692 	char *str;
693 
694 	asprintf(&str, "%ld", k->ki_valid ? k->ki_p->ki_rusage.ru_majflt : 0);
695 	return (str);
696 }
697 
698 /* ARGSUSED */
699 char *
700 maxrss(KINFO *k __unused, VARENT *ve __unused)
701 {
702 
703 	/* XXX not yet */
704 	return (NULL);
705 }
706 
707 char *
708 priorityr(KINFO *k, VARENT *ve __unused)
709 {
710 	struct priority *lpri;
711 	char *str;
712 	unsigned class, level;
713 
714 	lpri = &k->ki_p->ki_pri;
715 	class = lpri->pri_class;
716 	level = lpri->pri_level;
717 	switch (class) {
718 	case RTP_PRIO_REALTIME:
719 	/* alias for PRI_REALTIME */
720 		asprintf(&str, "real:%u", level - PRI_MIN_REALTIME);
721 		break;
722 	case RTP_PRIO_NORMAL:
723 	/* alias for PRI_TIMESHARE */
724 		if (level >= PRI_MIN_TIMESHARE)
725 			asprintf(&str, "normal:%u", level - PRI_MIN_TIMESHARE);
726 		else
727 			asprintf(&str, "kernel:%u", level - PRI_MIN_KERN);
728 		break;
729 	case RTP_PRIO_IDLE:
730 	/* alias for PRI_IDLE */
731 		asprintf(&str, "idle:%u", level - PRI_MIN_IDLE);
732 		break;
733 	case RTP_PRIO_ITHD:
734 	/* alias for PRI_ITHD */
735 		asprintf(&str, "intr:%u", level - PRI_MIN_ITHD);
736 		break;
737 	default:
738 		asprintf(&str, "%u:%u", class, level);
739 		break;
740 	}
741 	return (str);
742 }
743 
744 /*
745  * Generic output routines.  Print fields from various prototype
746  * structures.
747  */
748 static char *
749 printval(void *bp, VAR *v)
750 {
751 	static char ofmt[32] = "%";
752 	const char *fcp;
753 	char *cp, *str;
754 
755 	cp = ofmt + 1;
756 	fcp = v->fmt;
757 	while ((*cp++ = *fcp++));
758 
759 #define	CHKINF127(n)	(((n) > 127) && (v->flag & INF127) ? 127 : (n))
760 
761 	switch (v->type) {
762 	case CHAR:
763 		(void)asprintf(&str, ofmt, *(char *)bp);
764 		break;
765 	case UCHAR:
766 		(void)asprintf(&str, ofmt, *(u_char *)bp);
767 		break;
768 	case SHORT:
769 		(void)asprintf(&str, ofmt, *(short *)bp);
770 		break;
771 	case USHORT:
772 		(void)asprintf(&str, ofmt, *(u_short *)bp);
773 		break;
774 	case INT:
775 		(void)asprintf(&str, ofmt, *(int *)bp);
776 		break;
777 	case UINT:
778 		(void)asprintf(&str, ofmt, CHKINF127(*(u_int *)bp));
779 		break;
780 	case LONG:
781 		(void)asprintf(&str, ofmt, *(long *)bp);
782 		break;
783 	case ULONG:
784 		(void)asprintf(&str, ofmt, *(u_long *)bp);
785 		break;
786 	case KPTR:
787 		(void)asprintf(&str, ofmt, *(u_long *)bp);
788 		break;
789 	case PGTOK:
790 		(void)asprintf(&str, ofmt, ps_pgtok(*(u_long *)bp));
791 		break;
792 	}
793 
794 	return (str);
795 }
796 
797 char *
798 kvar(KINFO *k, VARENT *ve)
799 {
800 	VAR *v;
801 
802 	v = ve->var;
803 	return (printval((char *)((char *)k->ki_p + v->off), v));
804 }
805 
806 char *
807 rvar(KINFO *k, VARENT *ve)
808 {
809 	VAR *v;
810 
811 	v = ve->var;
812 	if (!k->ki_valid)
813 		return (NULL);
814 	return (printval((char *)((char *)(&k->ki_p->ki_rusage) + v->off), v));
815 }
816 
817 char *
818 emulname(KINFO *k, VARENT *ve __unused)
819 {
820 
821 	return (strdup(k->ki_p->ki_emul));
822 }
823 
824 char *
825 label(KINFO *k, VARENT *ve __unused)
826 {
827 	char *string;
828 	mac_t proclabel;
829 	int error;
830 
831 	string = NULL;
832 	if (mac_prepare_process_label(&proclabel) == -1) {
833 		xo_warn("mac_prepare_process_label");
834 		goto out;
835 	}
836 	error = mac_get_pid(k->ki_p->ki_pid, proclabel);
837 	if (error == 0) {
838 		if (mac_to_text(proclabel, &string) == -1)
839 			string = NULL;
840 	}
841 	mac_free(proclabel);
842 out:
843 	return (string);
844 }
845 
846 char *
847 loginclass(KINFO *k, VARENT *ve __unused)
848 {
849 
850 	/*
851 	 * Don't display login class for system processes;
852 	 * login classes are used for resource limits,
853 	 * and limits don't apply to system processes.
854 	 */
855 	if (k->ki_p->ki_flag & P_SYSTEM) {
856 		return (strdup("-"));
857 	}
858 	return (strdup(k->ki_p->ki_loginclass));
859 }
860 
861 char *
862 jailname(KINFO *k, VARENT *ve __unused)
863 {
864 	char *name;
865 
866 	if (k->ki_p->ki_jid == 0)
867 		return (strdup("-"));
868 	name = jail_getname(k->ki_p->ki_jid);
869 	if (name == NULL)
870 		return (strdup("-"));
871 	return (name);
872 }
873