xref: /titanic_44/usr/src/cmd/prstat/prstat.c (revision 1a5e258f5471356ca102c7176637cdce45bac147)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 
22 /*
23  * Copyright (c) 2013 Gary Mills
24  *
25  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
26  * Use is subject to license terms.
27  *
28  * Portions Copyright 2009 Chad Mynhier
29  */
30 
31 #include <sys/types.h>
32 #include <sys/resource.h>
33 #include <sys/loadavg.h>
34 #include <sys/time.h>
35 #include <sys/pset.h>
36 #include <sys/vm_usage.h>
37 #include <zone.h>
38 #include <libzonecfg.h>
39 
40 #include <stdio.h>
41 #include <stdlib.h>
42 #include <unistd.h>
43 #include <dirent.h>
44 #include <string.h>
45 #include <errno.h>
46 #include <poll.h>
47 #include <ctype.h>
48 #include <fcntl.h>
49 #include <limits.h>
50 #include <signal.h>
51 #include <time.h>
52 #include <project.h>
53 
54 #include <langinfo.h>
55 #include <libintl.h>
56 #include <locale.h>
57 
58 #include "prstat.h"
59 #include "prutil.h"
60 #include "prtable.h"
61 #include "prsort.h"
62 #include "prfile.h"
63 
64 /*
65  * x86 <sys/regs.h> ERR conflicts with <curses.h> ERR.  For the purposes
66  * of this file, we care about the curses.h ERR so include that last.
67  */
68 
69 #if	defined(ERR)
70 #undef	ERR
71 #endif
72 
73 #ifndef	TEXT_DOMAIN			/* should be defined by cc -D */
74 #define	TEXT_DOMAIN	"SYS_TEST"	/* use this only if it wasn't */
75 #endif
76 
77 #include <curses.h>
78 #include <term.h>
79 
80 #define	LOGIN_WIDTH	8
81 #define	ZONE_WIDTH	28
82 #define	PROJECT_WIDTH	28
83 
84 #define	PSINFO_HEADER_PROC \
85 "   PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS/NLWP       "
86 #define	PSINFO_HEADER_PROC_LGRP \
87 "   PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU LGRP PROCESS/NLWP  "
88 #define	PSINFO_HEADER_LWP \
89 "   PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU PROCESS/LWPID      "
90 #define	PSINFO_HEADER_LWP_LGRP \
91 "   PID USERNAME  SIZE   RSS STATE  PRI NICE      TIME  CPU LGRP PROCESS/LWPID "
92 #define	USAGE_HEADER_PROC \
93 "   PID USERNAME USR SYS TRP TFL DFL LCK SLP LAT VCX ICX SCL SIG PROCESS/NLWP  "
94 #define	USAGE_HEADER_LWP \
95 "   PID USERNAME USR SYS TRP TFL DFL LCK SLP LAT VCX ICX SCL SIG PROCESS/LWPID "
96 #define	USER_HEADER_PROC \
97 " NPROC USERNAME  SWAP   RSS MEMORY      TIME  CPU                             "
98 #define	USER_HEADER_LWP \
99 "  NLWP USERNAME  SWAP   RSS MEMORY      TIME  CPU                             "
100 #define	TASK_HEADER_PROC \
101 "TASKID    NPROC  SWAP   RSS MEMORY      TIME  CPU PROJECT                     "
102 #define	TASK_HEADER_LWP \
103 "TASKID     NLWP  SWAP   RSS MEMORY      TIME  CPU PROJECT                     "
104 #define	PROJECT_HEADER_PROC \
105 "PROJID    NPROC  SWAP   RSS MEMORY      TIME  CPU PROJECT                     "
106 #define	PROJECT_HEADER_LWP \
107 "PROJID     NLWP  SWAP   RSS MEMORY      TIME  CPU PROJECT                     "
108 #define	ZONE_HEADER_PROC \
109 "ZONEID    NPROC  SWAP   RSS MEMORY      TIME  CPU ZONE                        "
110 #define	ZONE_HEADER_LWP \
111 "ZONEID     NLWP  SWAP   RSS MEMORY      TIME  CPU ZONE                        "
112 #define	PSINFO_LINE \
113 "%6d %-8s %5s %5s %-6s %3s  %3s %9s %3.3s%% %-.16s/%d"
114 #define	PSINFO_LINE_LGRP \
115 "%6d %-8s %5s %5s %-6s %3s  %3s %9s %3.3s%% %4d %-.16s/%d"
116 #define	USAGE_LINE \
117 "%6d %-8s %3.3s %3.3s %3.3s %3.3s %3.3s %3.3s %3.3s %3.3s %3.3s %3.3s "\
118 "%3.3s %3.3s %-.12s/%d"
119 #define	USER_LINE \
120 "%6d %-8s %5.5s %5.5s   %3.3s%% %9s %3.3s%%"
121 #define	TASK_LINE \
122 "%6d %8d %5s %5s   %3.3s%% %9s %3.3s%% %28s"
123 #define	PROJECT_LINE \
124 "%6d %8d %5s %5s   %3.3s%% %9s %3.3s%% %28s"
125 #define	ZONE_LINE \
126 "%6d %8d %5s %5s   %3.3s%% %9s %3.3s%% %28s"
127 
128 #define	TOTAL_LINE \
129 "Total: %d processes, %d lwps, load averages: %3.2f, %3.2f, %3.2f"
130 
131 /* global variables */
132 
133 static char	*t_ulon;			/* termcap: start underline */
134 static char	*t_uloff;			/* termcap: end underline */
135 static char	*t_up;				/* termcap: cursor 1 line up */
136 static char	*t_eol;				/* termcap: clear end of line */
137 static char	*t_smcup;			/* termcap: cursor mvcap on */
138 static char	*t_rmcup;			/* termcap: cursor mvcap off */
139 static char	*t_home;			/* termcap: move cursor home */
140 static char	*movecur = NULL;		/* termcap: move up string */
141 static char	*empty_string = "\0";		/* termcap: empty string */
142 static uint_t	print_movecur = FALSE;		/* print movecur or not */
143 static int	is_curses_on = FALSE;		/* current curses state */
144 
145 static table_t	pid_tbl = {0, 0, NULL};		/* selected processes */
146 static table_t	cpu_tbl = {0, 0, NULL};		/* selected processors */
147 static table_t  set_tbl = {0, 0, NULL};		/* selected processor sets */
148 static table_t	prj_tbl = {0, 0, NULL};		/* selected projects */
149 static table_t	tsk_tbl = {0, 0, NULL};		/* selected tasks */
150 static table_t	lgr_tbl = {0, 0, NULL};		/* selected lgroups */
151 static zonetbl_t zone_tbl = {0, 0, NULL};	/* selected zones */
152 static uidtbl_t euid_tbl = {0, 0, NULL}; 	/* selected effective users */
153 static uidtbl_t ruid_tbl = {0, 0, NULL}; 	/* selected real users */
154 
155 static uint_t	total_procs;			/* total number of procs */
156 static uint_t	total_lwps;			/* total number of lwps */
157 static float	total_cpu;			/* total cpu usage */
158 static float	total_mem;			/* total memory usage */
159 
160 static list_t	lwps;				/* list of lwps/processes */
161 static list_t	users;				/* list of users */
162 static list_t	tasks;				/* list of tasks */
163 static list_t	projects;			/* list of projects */
164 static list_t	zones;				/* list of zones */
165 static list_t	lgroups;			/* list of lgroups */
166 
167 static volatile uint_t sigwinch = 0;
168 static volatile uint_t sigtstp = 0;
169 static volatile uint_t sigterm = 0;
170 
171 static long pagesize;
172 
173 /* default settings */
174 
175 static optdesc_t opts = {
176 	5,			/* interval between updates, seconds */
177 	15,			/* number of lines in top part */
178 	5,			/* number of lines in bottom part */
179 	-1,			/* number of iterations; infinitely */
180 	OPT_PSINFO | OPT_FULLSCREEN | OPT_USEHOME | OPT_TERMCAP,
181 	-1			/* sort in decreasing order */
182 };
183 
184 /*
185  * Print timestamp as decimal reprentation of time_t value (-d u was specified)
186  * or the standard date format (-d d was specified).
187  */
188 static void
189 print_timestamp(void)
190 {
191 	time_t t = time(NULL);
192 	static char *fmt = NULL;
193 
194 	/* We only need to retrieve this once per invocation */
195 	if (fmt == NULL)
196 		fmt = nl_langinfo(_DATE_FMT);
197 
198 	if (opts.o_outpmode & OPT_UDATE) {
199 		(void) printf("%ld", t);
200 	} else if (opts.o_outpmode & OPT_DDATE) {
201 		char dstr[64];
202 		int len;
203 
204 		len = strftime(dstr, sizeof (dstr), fmt, localtime(&t));
205 		if (len > 0)
206 			(void) printf("%s", dstr);
207 	}
208 	(void) putp(t_eol);
209 	(void) putchar('\n');
210 }
211 
212 static void
213 psetloadavg(long psetid, void *ptr)
214 {
215 	double psetloadavg[3];
216 	double *loadavg = ptr;
217 
218 	if (pset_getloadavg((psetid_t)psetid, psetloadavg, 3) != -1) {
219 		*loadavg++ += psetloadavg[0];
220 		*loadavg++ += psetloadavg[1];
221 		*loadavg += psetloadavg[2];
222 	}
223 }
224 
225 /*
226  * Queries the memory virtual and rss size for each member of a list.
227  * This will override the values computed by /proc aggregation.
228  */
229 static void
230 list_getsize(list_t *list)
231 {
232 	id_info_t *id;
233 	vmusage_t *results, *next;
234 	vmusage_t *match;
235 	size_t nres = 0;
236 	size_t i;
237 	uint_t flags = 0;
238 	int ret;
239 	size_t physmem = sysconf(_SC_PHYS_PAGES) * pagesize;
240 
241 	/*
242 	 * Determine what swap/rss results to calculate.  getvmusage() will
243 	 * prune results returned to non-global zones automatically, so
244 	 * there is no need to pass different flags when calling from a
245 	 * non-global zone.
246 	 *
247 	 * Currently list_getsize() is only called with a single flag.  This
248 	 * is because -Z, -J, -T, and -a are mutually exclusive.  Regardless
249 	 * of this, we handle multiple flags.
250 	 */
251 	if (opts.o_outpmode & OPT_USERS) {
252 		/*
253 		 * Gather rss for all users in all zones.  Treat the same
254 		 * uid in different zones as the same user.
255 		 */
256 		flags |= VMUSAGE_COL_RUSERS;
257 
258 	} else if (opts.o_outpmode & OPT_TASKS) {
259 		/* Gather rss for all tasks in all zones */
260 		flags |= VMUSAGE_ALL_TASKS;
261 
262 	} else if (opts.o_outpmode & OPT_PROJECTS) {
263 		/*
264 		 * Gather rss for all projects in all zones.  Treat the same
265 		 * projid in diffrent zones as the same project.
266 		 */
267 		flags |= VMUSAGE_COL_PROJECTS;
268 
269 	} else if (opts.o_outpmode & OPT_ZONES) {
270 		/* Gather rss for all zones */
271 		flags |= VMUSAGE_ALL_ZONES;
272 
273 	} else {
274 		Die(gettext(
275 		    "Cannot determine rss flags for output options %x\n"),
276 		    opts.o_outpmode);
277 	}
278 
279 	/*
280 	 * getvmusage() returns an array of result structures.  One for
281 	 * each zone, project, task, or user on the system, depending on
282 	 * flags.
283 	 *
284 	 * If getvmusage() fails, prstat will use the size already gathered
285 	 * from psinfo
286 	 */
287 	if (getvmusage(flags, opts.o_interval, NULL, &nres) != 0)
288 		return;
289 
290 	results = (vmusage_t *)Malloc(sizeof (vmusage_t) * nres);
291 	for (;;) {
292 		ret = getvmusage(flags, opts.o_interval, results, &nres);
293 		if (ret == 0)
294 			break;
295 		if (errno == EOVERFLOW) {
296 			results = (vmusage_t *)Realloc(results,
297 			    sizeof (vmusage_t) * nres);
298 			continue;
299 		}
300 		/*
301 		 * Failure for some other reason.  Prstat will use the size
302 		 * already gathered from psinfo.
303 		 */
304 		free(results);
305 		return;
306 	}
307 	for (id = list->l_head; id != NULL; id = id->id_next) {
308 
309 		match = NULL;
310 		next = results;
311 		for (i = 0; i < nres; i++, next++) {
312 			switch (flags) {
313 			case VMUSAGE_COL_RUSERS:
314 				if (next->vmu_id == id->id_uid)
315 					match = next;
316 				break;
317 			case VMUSAGE_ALL_TASKS:
318 				if (next->vmu_id == id->id_taskid)
319 					match = next;
320 				break;
321 			case VMUSAGE_COL_PROJECTS:
322 				if (next->vmu_id == id->id_projid)
323 					match = next;
324 				break;
325 			case VMUSAGE_ALL_ZONES:
326 				if (next->vmu_id == id->id_zoneid)
327 					match = next;
328 				break;
329 			default:
330 				Die(gettext(
331 				    "Unknown vmusage flags %d\n"), flags);
332 			}
333 		}
334 		if (match != NULL) {
335 			id->id_size = match->vmu_swap_all / 1024;
336 			id->id_rssize = match->vmu_rss_all / 1024;
337 			id->id_pctmem = (100.0 * (float)match->vmu_rss_all) /
338 			    (float)physmem;
339 			/* Output using data from getvmusage() */
340 			id->id_sizematch = B_TRUE;
341 		}
342 		/*
343 		 * If no match is found, prstat will use the size already
344 		 * gathered from psinfo.
345 		 */
346 	}
347 	free(results);
348 }
349 
350 /*
351  * A routine to display the contents of the list on the screen
352  */
353 static void
354 list_print(list_t *list)
355 {
356 	lwp_info_t *lwp;
357 	id_info_t *id;
358 	char usr[4], sys[4], trp[4], tfl[4];
359 	char dfl[4], lck[4], slp[4], lat[4];
360 	char vcx[4], icx[4], scl[4], sig[4];
361 	char psize[6], prssize[6], pmem[6], pcpu[6], ptime[12];
362 	char pstate[7], pnice[4], ppri[4];
363 	char pname[LOGNAME_MAX+1];
364 	char projname[PROJNAME_MAX+1];
365 	char zonename[ZONENAME_MAX+1];
366 	float cpu, mem;
367 	double loadavg[3] = {0, 0, 0};
368 	int i, lwpid;
369 
370 	if (foreach_element(&set_tbl, &loadavg, psetloadavg) == 0) {
371 		/*
372 		 * If processor sets aren't specified, we display system-wide
373 		 * load averages.
374 		 */
375 		(void) getloadavg(loadavg, 3);
376 	}
377 
378 	if (((opts.o_outpmode & OPT_UDATE) || (opts.o_outpmode & OPT_DDATE)) &&
379 	    ((list->l_type == LT_LWPS) || !(opts.o_outpmode & OPT_SPLIT)))
380 		print_timestamp();
381 	if (opts.o_outpmode & OPT_TTY)
382 		(void) putchar('\r');
383 	(void) putp(t_ulon);
384 
385 	switch (list->l_type) {
386 	case LT_PROJECTS:
387 		if (opts.o_outpmode & OPT_LWPS)
388 			(void) printf(PROJECT_HEADER_LWP);
389 		else
390 			(void) printf(PROJECT_HEADER_PROC);
391 		break;
392 	case LT_TASKS:
393 		if (opts.o_outpmode & OPT_LWPS)
394 			(void) printf(TASK_HEADER_LWP);
395 		else
396 			(void) printf(TASK_HEADER_PROC);
397 		break;
398 	case LT_ZONES:
399 		if (opts.o_outpmode & OPT_LWPS)
400 			(void) printf(ZONE_HEADER_LWP);
401 		else
402 			(void) printf(ZONE_HEADER_PROC);
403 		break;
404 	case LT_USERS:
405 		if (opts.o_outpmode & OPT_LWPS)
406 			(void) printf(USER_HEADER_LWP);
407 		else
408 			(void) printf(USER_HEADER_PROC);
409 		break;
410 	case LT_LWPS:
411 		if (opts.o_outpmode & OPT_LWPS) {
412 			if (opts.o_outpmode & OPT_PSINFO) {
413 				if (opts.o_outpmode & OPT_LGRP)
414 					(void) printf(PSINFO_HEADER_LWP_LGRP);
415 				else
416 					(void) printf(PSINFO_HEADER_LWP);
417 			}
418 			if (opts.o_outpmode & OPT_MSACCT)
419 				(void) printf(USAGE_HEADER_LWP);
420 		} else {
421 			if (opts.o_outpmode & OPT_PSINFO) {
422 				if (opts.o_outpmode & OPT_LGRP)
423 					(void) printf(PSINFO_HEADER_PROC_LGRP);
424 				else
425 					(void) printf(PSINFO_HEADER_PROC);
426 			}
427 			if (opts.o_outpmode & OPT_MSACCT)
428 				(void) printf(USAGE_HEADER_PROC);
429 		}
430 		break;
431 	}
432 
433 	(void) putp(t_uloff);
434 	(void) putp(t_eol);
435 	(void) putchar('\n');
436 
437 	for (i = 0; i < list->l_used; i++) {
438 		switch (list->l_type) {
439 		case LT_PROJECTS:
440 		case LT_TASKS:
441 		case LT_USERS:
442 		case LT_ZONES:
443 			id = list->l_ptrs[i];
444 			/*
445 			 * CPU usage and memory usage normalization
446 			 */
447 			if (total_cpu >= 100)
448 				cpu = (100 * id->id_pctcpu) / total_cpu;
449 			else
450 				cpu = id->id_pctcpu;
451 			if (id->id_sizematch == B_FALSE && total_mem >= 100)
452 				mem = (100 * id->id_pctmem) / total_mem;
453 			else
454 				mem = id->id_pctmem;
455 			if (list->l_type == LT_USERS) {
456 				pwd_getname(id->id_uid, pname, sizeof (pname),
457 				    opts.o_outpmode & OPT_NORESOLVE,
458 				    opts.o_outpmode & (OPT_TERMCAP|OPT_TRUNC),
459 				    LOGIN_WIDTH);
460 			} else if (list->l_type == LT_ZONES) {
461 				getzonename(id->id_zoneid, zonename,
462 				    sizeof (zonename),
463 				    opts.o_outpmode & (OPT_TERMCAP|OPT_TRUNC),
464 				    ZONE_WIDTH);
465 			} else {
466 				getprojname(id->id_projid, projname,
467 				    sizeof (projname),
468 				    opts.o_outpmode & OPT_NORESOLVE,
469 				    opts.o_outpmode & (OPT_TERMCAP|OPT_TRUNC),
470 				    PROJECT_WIDTH);
471 			}
472 			Format_size(psize, id->id_size, 6);
473 			Format_size(prssize, id->id_rssize, 6);
474 			Format_pct(pmem, mem, 4);
475 			Format_pct(pcpu, cpu, 4);
476 			Format_time(ptime, id->id_time, 10);
477 			if (opts.o_outpmode & OPT_TTY)
478 				(void) putchar('\r');
479 			if (list->l_type == LT_PROJECTS)
480 				(void) printf(PROJECT_LINE, (int)id->id_projid,
481 				    id->id_nproc, psize, prssize, pmem, ptime,
482 				    pcpu, projname);
483 			else if (list->l_type == LT_TASKS)
484 				(void) printf(TASK_LINE, (int)id->id_taskid,
485 				    id->id_nproc, psize, prssize, pmem, ptime,
486 				    pcpu, projname);
487 			else if (list->l_type == LT_ZONES)
488 				(void) printf(ZONE_LINE, (int)id->id_zoneid,
489 				    id->id_nproc, psize, prssize, pmem, ptime,
490 				    pcpu, zonename);
491 			else
492 				(void) printf(USER_LINE, id->id_nproc, pname,
493 				    psize, prssize, pmem, ptime, pcpu);
494 			(void) putp(t_eol);
495 			(void) putchar('\n');
496 			break;
497 		case LT_LWPS:
498 			lwp = list->l_ptrs[i];
499 			if (opts.o_outpmode & OPT_LWPS)
500 				lwpid = lwp->li_info.pr_lwp.pr_lwpid;
501 			else
502 				lwpid = lwp->li_info.pr_nlwp +
503 				    lwp->li_info.pr_nzomb;
504 			pwd_getname(lwp->li_info.pr_uid, pname, sizeof (pname),
505 			    opts.o_outpmode & OPT_NORESOLVE,
506 			    opts.o_outpmode & (OPT_TERMCAP|OPT_TRUNC),
507 			    LOGIN_WIDTH);
508 			if (opts.o_outpmode & OPT_PSINFO) {
509 				Format_size(psize, lwp->li_info.pr_size, 6);
510 				Format_size(prssize, lwp->li_info.pr_rssize, 6);
511 				Format_state(pstate,
512 				    lwp->li_info.pr_lwp.pr_sname,
513 				    lwp->li_info.pr_lwp.pr_onpro, 7);
514 				if (strcmp(lwp->li_info.pr_lwp.pr_clname,
515 				    "RT") == 0 ||
516 				    strcmp(lwp->li_info.pr_lwp.pr_clname,
517 				    "SYS") == 0 ||
518 				    lwp->li_info.pr_lwp.pr_sname == 'Z')
519 					(void) strcpy(pnice, "  -");
520 				else
521 					Format_num(pnice,
522 					    lwp->li_info.pr_lwp.pr_nice - NZERO,
523 					    4);
524 				Format_num(ppri, lwp->li_info.pr_lwp.pr_pri, 4);
525 				Format_pct(pcpu,
526 				    FRC2PCT(lwp->li_info.pr_lwp.pr_pctcpu), 4);
527 				if (opts.o_outpmode & OPT_LWPS)
528 					Format_time(ptime,
529 					    lwp->li_info.pr_lwp.pr_time.tv_sec,
530 					    10);
531 				else
532 					Format_time(ptime,
533 					    lwp->li_info.pr_time.tv_sec, 10);
534 				if (opts.o_outpmode & OPT_TTY)
535 					(void) putchar('\r');
536 				stripfname(lwp->li_info.pr_fname);
537 				if (opts.o_outpmode & OPT_LGRP) {
538 					(void) printf(PSINFO_LINE_LGRP,
539 					    (int)lwp->li_info.pr_pid, pname,
540 					    psize, prssize, pstate,
541 					    ppri, pnice, ptime, pcpu,
542 					    (int)lwp->li_info.pr_lwp.pr_lgrp,
543 					    lwp->li_info.pr_fname, lwpid);
544 				} else {
545 					(void) printf(PSINFO_LINE,
546 					    (int)lwp->li_info.pr_pid, pname,
547 					    psize, prssize,
548 					    pstate, ppri, pnice,
549 					    ptime, pcpu,
550 					    lwp->li_info.pr_fname, lwpid);
551 				}
552 				(void) putp(t_eol);
553 				(void) putchar('\n');
554 			}
555 			if (opts.o_outpmode & OPT_MSACCT) {
556 				Format_pct(usr, lwp->li_usr, 4);
557 				Format_pct(sys, lwp->li_sys, 4);
558 				Format_pct(slp, lwp->li_slp, 4);
559 				Format_num(vcx, lwp->li_vcx, 4);
560 				Format_num(icx, lwp->li_icx, 4);
561 				Format_num(scl, lwp->li_scl, 4);
562 				Format_num(sig, lwp->li_sig, 4);
563 				Format_pct(trp, lwp->li_trp, 4);
564 				Format_pct(tfl, lwp->li_tfl, 4);
565 				Format_pct(dfl, lwp->li_dfl, 4);
566 				Format_pct(lck, lwp->li_lck, 4);
567 				Format_pct(lat, lwp->li_lat, 4);
568 				if (opts.o_outpmode & OPT_TTY)
569 					(void) putchar('\r');
570 				stripfname(lwp->li_info.pr_fname);
571 				(void) printf(USAGE_LINE,
572 				    (int)lwp->li_info.pr_pid, pname,
573 				    usr, sys, trp, tfl, dfl, lck,
574 				    slp, lat, vcx, icx, scl, sig,
575 				    lwp->li_info.pr_fname, lwpid);
576 				(void) putp(t_eol);
577 				(void) putchar('\n');
578 			}
579 			break;
580 		}
581 	}
582 
583 	if (opts.o_outpmode & OPT_TTY)
584 		(void) putchar('\r');
585 	if (opts.o_outpmode & OPT_TERMCAP) {
586 		switch (list->l_type) {
587 		case LT_PROJECTS:
588 		case LT_USERS:
589 		case LT_TASKS:
590 		case LT_ZONES:
591 			while (i++ < opts.o_nbottom) {
592 				(void) putp(t_eol);
593 				(void) putchar('\n');
594 			}
595 			break;
596 		case LT_LWPS:
597 			while (i++ < opts.o_ntop) {
598 				(void) putp(t_eol);
599 				(void) putchar('\n');
600 			}
601 		}
602 	}
603 
604 	if (opts.o_outpmode & OPT_TTY)
605 		(void) putchar('\r');
606 
607 	if ((opts.o_outpmode & OPT_SPLIT) && list->l_type == LT_LWPS)
608 		return;
609 
610 	(void) printf(TOTAL_LINE, total_procs, total_lwps,
611 	    loadavg[LOADAVG_1MIN], loadavg[LOADAVG_5MIN],
612 	    loadavg[LOADAVG_15MIN]);
613 	(void) putp(t_eol);
614 	(void) putchar('\n');
615 	if (opts.o_outpmode & OPT_TTY)
616 		(void) putchar('\r');
617 	(void) putp(t_eol);
618 	(void) fflush(stdout);
619 }
620 
621 static lwp_info_t *
622 list_add_lwp(list_t *list, pid_t pid, id_t lwpid)
623 {
624 	lwp_info_t *lwp;
625 
626 	if (list->l_head == NULL) {
627 		list->l_head = list->l_tail = lwp = Zalloc(sizeof (lwp_info_t));
628 	} else {
629 		lwp = Zalloc(sizeof (lwp_info_t));
630 		lwp->li_prev = list->l_tail;
631 		((lwp_info_t *)list->l_tail)->li_next = lwp;
632 		list->l_tail = lwp;
633 	}
634 	lwp->li_info.pr_pid = pid;
635 	lwp->li_info.pr_lwp.pr_lwpid = lwpid;
636 	lwpid_add(lwp, pid, lwpid);
637 	list->l_count++;
638 	return (lwp);
639 }
640 
641 static void
642 list_remove_lwp(list_t *list, lwp_info_t *lwp)
643 {
644 	if (lwp->li_prev)
645 		lwp->li_prev->li_next = lwp->li_next;
646 	else
647 		list->l_head = lwp->li_next;	/* removing the head */
648 	if (lwp->li_next)
649 		lwp->li_next->li_prev = lwp->li_prev;
650 	else
651 		list->l_tail = lwp->li_prev;	/* removing the tail */
652 	lwpid_del(lwp->li_info.pr_pid, lwp->li_info.pr_lwp.pr_lwpid);
653 	if (lwpid_pidcheck(lwp->li_info.pr_pid) == 0)
654 		fds_rm(lwp->li_info.pr_pid);
655 	list->l_count--;
656 	free(lwp);
657 }
658 
659 static void
660 list_clear(list_t *list)
661 {
662 	if (list->l_type == LT_LWPS) {
663 		lwp_info_t	*lwp = list->l_tail;
664 		lwp_info_t	*lwp_tmp;
665 
666 		fd_closeall();
667 		while (lwp) {
668 			lwp_tmp = lwp;
669 			lwp = lwp->li_prev;
670 			list_remove_lwp(&lwps, lwp_tmp);
671 		}
672 	} else {
673 		id_info_t *id = list->l_head;
674 		id_info_t *nextid;
675 
676 		while (id) {
677 			nextid = id->id_next;
678 			free(id);
679 			id = nextid;
680 		}
681 		list->l_count = 0;
682 		list->l_head = list->l_tail = NULL;
683 	}
684 }
685 
686 static void
687 list_update(list_t *list, lwp_info_t *lwp)
688 {
689 	id_info_t *id;
690 
691 	if (list->l_head == NULL) {			/* first element */
692 		list->l_head = list->l_tail = id = Zalloc(sizeof (id_info_t));
693 		goto update;
694 	}
695 
696 	for (id = list->l_head; id; id = id->id_next) {
697 		if ((list->l_type == LT_USERS) &&
698 		    (id->id_uid != lwp->li_info.pr_uid))
699 			continue;
700 		if ((list->l_type == LT_TASKS) &&
701 		    (id->id_taskid != lwp->li_info.pr_taskid))
702 			continue;
703 		if ((list->l_type == LT_PROJECTS) &&
704 		    (id->id_projid != lwp->li_info.pr_projid))
705 			continue;
706 		if ((list->l_type == LT_ZONES) &&
707 		    (id->id_zoneid != lwp->li_info.pr_zoneid))
708 			continue;
709 		if ((list->l_type == LT_LGRPS) &&
710 		    (id->id_lgroup != lwp->li_info.pr_lwp.pr_lgrp))
711 			continue;
712 		id->id_nproc++;
713 		id->id_taskid	= lwp->li_info.pr_taskid;
714 		id->id_projid	= lwp->li_info.pr_projid;
715 		id->id_zoneid	= lwp->li_info.pr_zoneid;
716 		id->id_lgroup	= lwp->li_info.pr_lwp.pr_lgrp;
717 
718 		if (lwp->li_flags & LWP_REPRESENT) {
719 			id->id_size	+= lwp->li_info.pr_size;
720 			id->id_rssize	+= lwp->li_info.pr_rssize;
721 		}
722 		id->id_pctcpu	+= FRC2PCT(lwp->li_info.pr_lwp.pr_pctcpu);
723 		if (opts.o_outpmode & OPT_LWPS)
724 			id->id_time += TIME2SEC(lwp->li_info.pr_lwp.pr_time);
725 		else
726 			id->id_time += TIME2SEC(lwp->li_info.pr_time);
727 		id->id_pctmem	+= FRC2PCT(lwp->li_info.pr_pctmem);
728 		id->id_key	+= lwp->li_key;
729 		total_cpu	+= FRC2PCT(lwp->li_info.pr_lwp.pr_pctcpu);
730 		total_mem	+= FRC2PCT(lwp->li_info.pr_pctmem);
731 		return;
732 	}
733 
734 	id = list->l_tail;
735 	id->id_next = Zalloc(sizeof (id_info_t));
736 	id->id_next->id_prev = list->l_tail;
737 	id->id_next->id_next = NULL;
738 	list->l_tail = id->id_next;
739 	id = list->l_tail;
740 update:
741 	id->id_uid	= lwp->li_info.pr_uid;
742 	id->id_projid	= lwp->li_info.pr_projid;
743 	id->id_taskid	= lwp->li_info.pr_taskid;
744 	id->id_zoneid	= lwp->li_info.pr_zoneid;
745 	id->id_lgroup	= lwp->li_info.pr_lwp.pr_lgrp;
746 	id->id_nproc++;
747 	id->id_sizematch = B_FALSE;
748 	if (lwp->li_flags & LWP_REPRESENT) {
749 		id->id_size	= lwp->li_info.pr_size;
750 		id->id_rssize	= lwp->li_info.pr_rssize;
751 	}
752 	id->id_pctcpu	= FRC2PCT(lwp->li_info.pr_lwp.pr_pctcpu);
753 	if (opts.o_outpmode & OPT_LWPS)
754 		id->id_time = TIME2SEC(lwp->li_info.pr_lwp.pr_time);
755 	else
756 		id->id_time = TIME2SEC(lwp->li_info.pr_time);
757 	id->id_pctmem	= FRC2PCT(lwp->li_info.pr_pctmem);
758 	id->id_key	= lwp->li_key;
759 	total_cpu	+= id->id_pctcpu;
760 	total_mem	+= id->id_pctmem;
761 	list->l_count++;
762 }
763 
764 static void
765 lwp_update(lwp_info_t *lwp, pid_t pid, id_t lwpid, struct prusage *usage)
766 {
767 	float period;
768 
769 	if (!lwpid_is_active(pid, lwpid)) {
770 		/*
771 		 * If we are reading cpu times for the first time then
772 		 * calculate average cpu times based on whole process
773 		 * execution time.
774 		 */
775 		(void) memcpy(&lwp->li_usage, usage, sizeof (prusage_t));
776 		period = TIME2NSEC(usage->pr_rtime);
777 		period = period/(float)100;
778 
779 		if (period == 0) { /* zombie */
780 			period = 1;
781 			lwp->li_usr = 0;
782 			lwp->li_sys = 0;
783 			lwp->li_slp = 0;
784 		} else {
785 			lwp->li_usr = TIME2NSEC(usage->pr_utime)/period;
786 			lwp->li_sys = TIME2NSEC(usage->pr_stime)/period;
787 			lwp->li_slp = TIME2NSEC(usage->pr_slptime)/period;
788 		}
789 		lwp->li_trp = TIME2NSEC(usage->pr_ttime)/period;
790 		lwp->li_tfl = TIME2NSEC(usage->pr_tftime)/period;
791 		lwp->li_dfl = TIME2NSEC(usage->pr_dftime)/period;
792 		lwp->li_lck = TIME2NSEC(usage->pr_ltime)/period;
793 		lwp->li_lat = TIME2NSEC(usage->pr_wtime)/period;
794 		period = (period / NANOSEC)*(float)100; /* now in seconds */
795 		lwp->li_vcx = (ulong_t)
796 		    (opts.o_interval * (usage->pr_vctx/period));
797 		lwp->li_icx = (ulong_t)
798 		    (opts.o_interval * (usage->pr_ictx/period));
799 		lwp->li_scl = (ulong_t)
800 		    (opts.o_interval * (usage->pr_sysc/period));
801 		lwp->li_sig = (ulong_t)
802 		    (opts.o_interval * (usage->pr_sigs/period));
803 		(void) lwpid_set_active(pid, lwpid);
804 	} else {
805 		/*
806 		 * If this is not a first time we are reading a process's
807 		 * CPU times then recalculate CPU times based on fresh data
808 		 * obtained from procfs and previous CPU time usage values.
809 		 */
810 		period = TIME2NSEC(usage->pr_rtime)-
811 		    TIME2NSEC(lwp->li_usage.pr_rtime);
812 		period = period/(float)100;
813 
814 		if (period == 0) { /* zombie */
815 			period = 1;
816 			lwp->li_usr = 0;
817 			lwp->li_sys = 0;
818 			lwp->li_slp = 0;
819 		} else {
820 			lwp->li_usr = (TIME2NSEC(usage->pr_utime)-
821 			    TIME2NSEC(lwp->li_usage.pr_utime))/period;
822 			lwp->li_sys = (TIME2NSEC(usage->pr_stime) -
823 			    TIME2NSEC(lwp->li_usage.pr_stime))/period;
824 			lwp->li_slp = (TIME2NSEC(usage->pr_slptime) -
825 			    TIME2NSEC(lwp->li_usage.pr_slptime))/period;
826 		}
827 		lwp->li_trp = (TIME2NSEC(usage->pr_ttime) -
828 		    TIME2NSEC(lwp->li_usage.pr_ttime))/period;
829 		lwp->li_tfl = (TIME2NSEC(usage->pr_tftime) -
830 		    TIME2NSEC(lwp->li_usage.pr_tftime))/period;
831 		lwp->li_dfl = (TIME2NSEC(usage->pr_dftime) -
832 		    TIME2NSEC(lwp->li_usage.pr_dftime))/period;
833 		lwp->li_lck = (TIME2NSEC(usage->pr_ltime) -
834 		    TIME2NSEC(lwp->li_usage.pr_ltime))/period;
835 		lwp->li_lat = (TIME2NSEC(usage->pr_wtime) -
836 		    TIME2NSEC(lwp->li_usage.pr_wtime))/period;
837 		lwp->li_vcx = usage->pr_vctx - lwp->li_usage.pr_vctx;
838 		lwp->li_icx = usage->pr_ictx - lwp->li_usage.pr_ictx;
839 		lwp->li_scl = usage->pr_sysc - lwp->li_usage.pr_sysc;
840 		lwp->li_sig = usage->pr_sigs - lwp->li_usage.pr_sigs;
841 		(void) memcpy(&lwp->li_usage, usage, sizeof (prusage_t));
842 	}
843 }
844 
845 static int
846 read_procfile(fd_t **fd, char *pidstr, char *file, void *buf, size_t bufsize)
847 {
848 	char procfile[MAX_PROCFS_PATH];
849 
850 	(void) snprintf(procfile, MAX_PROCFS_PATH,
851 	    "/proc/%s/%s", pidstr, file);
852 	if ((*fd = fd_open(procfile, O_RDONLY, *fd)) == NULL)
853 		return (1);
854 	if (pread(fd_getfd(*fd), buf, bufsize, 0) != bufsize) {
855 		fd_close(*fd);
856 		return (1);
857 	}
858 	return (0);
859 }
860 
861 static void
862 add_proc(psinfo_t *psinfo)
863 {
864 	lwp_info_t *lwp;
865 	id_t lwpid;
866 	pid_t pid = psinfo->pr_pid;
867 
868 	lwpid = psinfo->pr_lwp.pr_lwpid;
869 	if ((lwp = lwpid_get(pid, lwpid)) == NULL)
870 		lwp = list_add_lwp(&lwps, pid, lwpid);
871 	lwp->li_flags |= LWP_ALIVE | LWP_REPRESENT;
872 	(void) memcpy(&lwp->li_info, psinfo, sizeof (psinfo_t));
873 	lwp->li_info.pr_lwp.pr_pctcpu = lwp->li_info.pr_pctcpu;
874 }
875 
876 static void
877 add_lwp(psinfo_t *psinfo, lwpsinfo_t *lwpsinfo, int flags)
878 {
879 	lwp_info_t *lwp;
880 	pid_t pid = psinfo->pr_pid;
881 	id_t lwpid = lwpsinfo->pr_lwpid;
882 
883 	if ((lwp = lwpid_get(pid, lwpid)) == NULL)
884 		lwp = list_add_lwp(&lwps, pid, lwpid);
885 	lwp->li_flags &= ~LWP_REPRESENT;
886 	lwp->li_flags |= LWP_ALIVE;
887 	lwp->li_flags |= flags;
888 	(void) memcpy(&lwp->li_info, psinfo,
889 	    sizeof (psinfo_t) - sizeof (lwpsinfo_t));
890 	(void) memcpy(&lwp->li_info.pr_lwp, lwpsinfo, sizeof (lwpsinfo_t));
891 }
892 
893 static void
894 prstat_scandir(DIR *procdir)
895 {
896 	char *pidstr;
897 	pid_t pid;
898 	id_t lwpid;
899 	size_t entsz;
900 	long nlwps, nent, i;
901 	char *buf, *ptr;
902 
903 	fds_t *fds;
904 	lwp_info_t *lwp;
905 	dirent_t *direntp;
906 
907 	prheader_t	header;
908 	psinfo_t	psinfo;
909 	prusage_t	usage;
910 	lwpsinfo_t	*lwpsinfo;
911 	prusage_t	*lwpusage;
912 
913 	total_procs = 0;
914 	total_lwps = 0;
915 	total_cpu = 0;
916 	total_mem = 0;
917 
918 	convert_zone(&zone_tbl);
919 	for (rewinddir(procdir); (direntp = readdir(procdir)); ) {
920 		pidstr = direntp->d_name;
921 		if (pidstr[0] == '.')	/* skip "." and ".."  */
922 			continue;
923 		pid = atoi(pidstr);
924 		if (pid == 0 || pid == 2 || pid == 3)
925 			continue;	/* skip sched, pageout and fsflush */
926 		if (has_element(&pid_tbl, pid) == 0)
927 			continue;	/* check if we really want this pid */
928 		fds = fds_get(pid);	/* get ptr to file descriptors */
929 
930 		if (read_procfile(&fds->fds_psinfo, pidstr,
931 		    "psinfo", &psinfo, sizeof (psinfo_t)) != 0)
932 			continue;
933 		if (!has_uid(&ruid_tbl, psinfo.pr_uid) ||
934 		    !has_uid(&euid_tbl, psinfo.pr_euid) ||
935 		    !has_element(&prj_tbl, psinfo.pr_projid) ||
936 		    !has_element(&tsk_tbl, psinfo.pr_taskid) ||
937 		    !has_zone(&zone_tbl, psinfo.pr_zoneid)) {
938 			fd_close(fds->fds_psinfo);
939 			continue;
940 		}
941 		nlwps = psinfo.pr_nlwp + psinfo.pr_nzomb;
942 
943 		if (nlwps > 1 && (opts.o_outpmode & (OPT_LWPS | OPT_PSETS))) {
944 			int rep_lwp = 0;
945 
946 			if (read_procfile(&fds->fds_lpsinfo, pidstr, "lpsinfo",
947 			    &header, sizeof (prheader_t)) != 0) {
948 				fd_close(fds->fds_psinfo);
949 				continue;
950 			}
951 
952 			nent = header.pr_nent;
953 			entsz = header.pr_entsize * nent;
954 			ptr = buf = Malloc(entsz);
955 			if (pread(fd_getfd(fds->fds_lpsinfo), buf,
956 			    entsz, sizeof (struct prheader)) != entsz) {
957 				fd_close(fds->fds_lpsinfo);
958 				fd_close(fds->fds_psinfo);
959 				free(buf);
960 				continue;
961 			}
962 
963 			nlwps = 0;
964 			for (i = 0; i < nent; i++, ptr += header.pr_entsize) {
965 				/*LINTED ALIGNMENT*/
966 				lwpsinfo = (lwpsinfo_t *)ptr;
967 				if (!has_element(&cpu_tbl,
968 				    lwpsinfo->pr_onpro) ||
969 				    !has_element(&set_tbl,
970 				    lwpsinfo->pr_bindpset) ||
971 				    !has_element(&lgr_tbl, lwpsinfo->pr_lgrp))
972 					continue;
973 				nlwps++;
974 				if ((opts.o_outpmode & (OPT_PSETS | OPT_LWPS))
975 				    == OPT_PSETS) {
976 					/*
977 					 * If one of process's LWPs is bound
978 					 * to a given processor set, report the
979 					 * whole process.  We may be doing this
980 					 * a few times but we'll get an accurate
981 					 * lwp count in return.
982 					 */
983 					add_proc(&psinfo);
984 				} else {
985 					if (rep_lwp == 0) {
986 						rep_lwp = 1;
987 						add_lwp(&psinfo, lwpsinfo,
988 						    LWP_REPRESENT);
989 					} else {
990 						add_lwp(&psinfo, lwpsinfo, 0);
991 					}
992 				}
993 			}
994 			free(buf);
995 			if (nlwps == 0) {
996 				fd_close(fds->fds_lpsinfo);
997 				fd_close(fds->fds_psinfo);
998 				continue;
999 			}
1000 		} else {
1001 			if (!has_element(&cpu_tbl, psinfo.pr_lwp.pr_onpro) ||
1002 			    !has_element(&set_tbl, psinfo.pr_lwp.pr_bindpset) ||
1003 			    !has_element(&lgr_tbl, psinfo.pr_lwp.pr_lgrp)) {
1004 				fd_close(fds->fds_psinfo);
1005 				continue;
1006 			}
1007 			add_proc(&psinfo);
1008 		}
1009 		if (!(opts.o_outpmode & OPT_MSACCT)) {
1010 			total_procs++;
1011 			total_lwps += nlwps;
1012 			continue;
1013 		}
1014 		/*
1015 		 * Get more information about processes from /proc/pid/usage.
1016 		 * If process has more than one lwp, then we may have to
1017 		 * also look at the /proc/pid/lusage file.
1018 		 */
1019 		if ((opts.o_outpmode & OPT_LWPS) && (nlwps > 1)) {
1020 			if (read_procfile(&fds->fds_lusage, pidstr, "lusage",
1021 			    &header, sizeof (prheader_t)) != 0) {
1022 				fd_close(fds->fds_lpsinfo);
1023 				fd_close(fds->fds_psinfo);
1024 				continue;
1025 			}
1026 			nent = header.pr_nent;
1027 			entsz = header.pr_entsize * nent;
1028 			buf = Malloc(entsz);
1029 			if (pread(fd_getfd(fds->fds_lusage), buf,
1030 			    entsz, sizeof (struct prheader)) != entsz) {
1031 				fd_close(fds->fds_lusage);
1032 				fd_close(fds->fds_lpsinfo);
1033 				fd_close(fds->fds_psinfo);
1034 				free(buf);
1035 				continue;
1036 			}
1037 			for (i = 1, ptr = buf + header.pr_entsize; i < nent;
1038 			    i++, ptr += header.pr_entsize) {
1039 				/*LINTED ALIGNMENT*/
1040 				lwpusage = (prusage_t *)ptr;
1041 				lwpid = lwpusage->pr_lwpid;
1042 				/*
1043 				 * New LWPs created after we read lpsinfo
1044 				 * will be ignored.  Don't want to do
1045 				 * everything all over again.
1046 				 */
1047 				if ((lwp = lwpid_get(pid, lwpid)) == NULL)
1048 					continue;
1049 				lwp_update(lwp, pid, lwpid, lwpusage);
1050 			}
1051 			free(buf);
1052 		} else {
1053 			if (read_procfile(&fds->fds_usage, pidstr, "usage",
1054 			    &usage, sizeof (prusage_t)) != 0) {
1055 				fd_close(fds->fds_lpsinfo);
1056 				fd_close(fds->fds_psinfo);
1057 				continue;
1058 			}
1059 			lwpid = psinfo.pr_lwp.pr_lwpid;
1060 			if ((lwp = lwpid_get(pid, lwpid)) == NULL)
1061 				continue;
1062 			lwp_update(lwp, pid, lwpid, &usage);
1063 		}
1064 		total_procs++;
1065 		total_lwps += nlwps;
1066 	}
1067 	fd_update();
1068 }
1069 
1070 /*
1071  * This procedure removes all dead lwps from the linked list of all lwps.
1072  * It also creates linked list of ids if necessary.
1073  */
1074 static void
1075 list_refresh(list_t *list)
1076 {
1077 	lwp_info_t *lwp, *lwp_next;
1078 
1079 	if (!(list->l_type & LT_LWPS))
1080 		return;
1081 
1082 	for (lwp = list->l_head; lwp != NULL; ) {
1083 		if (lwp->li_flags & LWP_ALIVE) {
1084 			/*
1085 			 * Process all live LWPs.
1086 			 * When we're done, mark them as dead.
1087 			 * They will be marked "alive" on the next
1088 			 * /proc scan if they still exist.
1089 			 */
1090 			lwp->li_key = list_getkeyval(list, lwp);
1091 			if (opts.o_outpmode & OPT_USERS)
1092 				list_update(&users, lwp);
1093 			if (opts.o_outpmode & OPT_TASKS)
1094 				list_update(&tasks, lwp);
1095 			if (opts.o_outpmode & OPT_PROJECTS)
1096 				list_update(&projects, lwp);
1097 			if (opts.o_outpmode & OPT_ZONES)
1098 				list_update(&zones, lwp);
1099 			if (opts.o_outpmode & OPT_LGRP)
1100 				list_update(&lgroups, lwp);
1101 			lwp->li_flags &= ~LWP_ALIVE;
1102 			lwp = lwp->li_next;
1103 
1104 		} else {
1105 			lwp_next = lwp->li_next;
1106 			list_remove_lwp(&lwps, lwp);
1107 			lwp = lwp_next;
1108 		}
1109 	}
1110 }
1111 
1112 static void
1113 curses_on()
1114 {
1115 	if ((opts.o_outpmode & OPT_TERMCAP) && (is_curses_on == FALSE)) {
1116 		(void) initscr();
1117 		(void) nonl();
1118 		(void) putp(t_smcup);
1119 		is_curses_on = TRUE;
1120 	}
1121 }
1122 
1123 static void
1124 curses_off()
1125 {
1126 	if ((is_curses_on == TRUE) && (opts.o_outpmode & OPT_TERMCAP)) {
1127 		(void) putp(t_rmcup);
1128 		(void) endwin();
1129 		is_curses_on = FALSE;
1130 	}
1131 	(void) fflush(stdout);
1132 }
1133 
1134 static int
1135 nlines()
1136 {
1137 	struct winsize ws;
1138 	char *envp;
1139 	int n;
1140 	if (ioctl(STDOUT_FILENO, TIOCGWINSZ, &ws) != -1) {
1141 		if (ws.ws_row > 0)
1142 			return (ws.ws_row);
1143 	}
1144 	if (envp = getenv("LINES")) {
1145 		if ((n = Atoi(envp)) > 0) {
1146 			opts.o_outpmode &= ~OPT_USEHOME;
1147 			return (n);
1148 		}
1149 	}
1150 	return (-1);
1151 }
1152 
1153 static void
1154 setmovecur()
1155 {
1156 	int i, n;
1157 	if ((opts.o_outpmode & OPT_FULLSCREEN) &&
1158 	    (opts.o_outpmode & OPT_USEHOME)) {
1159 		movecur = t_home;
1160 		return;
1161 	}
1162 	if (opts.o_outpmode & OPT_SPLIT) {
1163 		n = opts.o_ntop + opts.o_nbottom + 2;
1164 	} else {
1165 		if (opts.o_outpmode & OPT_USERS)
1166 			n = opts.o_nbottom + 1;
1167 		else
1168 			n = opts.o_ntop + 1;
1169 	}
1170 	if (((opts.o_outpmode & OPT_UDATE) || (opts.o_outpmode & OPT_DDATE)))
1171 		n++;
1172 
1173 	if (movecur != NULL && movecur != empty_string && movecur != t_home)
1174 		free(movecur);
1175 	movecur = Zalloc(strlen(t_up) * (n + 5));
1176 	for (i = 0; i <= n; i++)
1177 		(void) strcat(movecur, t_up);
1178 }
1179 
1180 static int
1181 setsize()
1182 {
1183 	static int oldn = 0;
1184 	int n;
1185 
1186 	if (opts.o_outpmode & OPT_FULLSCREEN) {
1187 		n = nlines();
1188 		if (n == oldn)
1189 			return (0);
1190 		oldn = n;
1191 		if (n == -1) {
1192 			opts.o_outpmode &= ~OPT_USEHOME;
1193 			setmovecur();		/* set default window size */
1194 			return (1);
1195 		}
1196 		n = n - 3;	/* minus header, total and cursor lines */
1197 		if ((opts.o_outpmode & OPT_UDATE) ||
1198 		    (opts.o_outpmode & OPT_DDATE))
1199 			n--;	/* minus timestamp */
1200 		if (n < 1)
1201 			Die(gettext("window is too small (try -n)\n"));
1202 		if (opts.o_outpmode & OPT_SPLIT) {
1203 			if (n < 8) {
1204 				Die(gettext("window is too small (try -n)\n"));
1205 			} else {
1206 				opts.o_ntop = (n / 4) * 3;
1207 				opts.o_nbottom = n - 1 - opts.o_ntop;
1208 			}
1209 		} else {
1210 			if (opts.o_outpmode & OPT_USERS)
1211 				opts.o_nbottom = n;
1212 			else
1213 				opts.o_ntop = n;
1214 		}
1215 	}
1216 	setmovecur();
1217 	return (1);
1218 }
1219 
1220 static void
1221 ldtermcap()
1222 {
1223 	int err;
1224 	if (setupterm(NULL, STDIN_FILENO, &err) == ERR) {
1225 		switch (err) {
1226 		case 0:
1227 			Warn(gettext("failed to load terminal info, "
1228 			    "defaulting to -c option\n"));
1229 			break;
1230 		case -1:
1231 			Warn(gettext("terminfo database not found, "
1232 			    "defaulting to -c option\n"));
1233 			break;
1234 		default:
1235 			Warn(gettext("failed to initialize terminal, "
1236 			    "defaulting to -c option\n"));
1237 		}
1238 		opts.o_outpmode &= ~OPT_TERMCAP;
1239 		t_up = t_eol = t_smcup = t_rmcup = movecur = empty_string;
1240 		t_ulon = t_uloff = empty_string;
1241 		return;
1242 	}
1243 	t_ulon	= tigetstr("smul");
1244 	t_uloff	= tigetstr("rmul");
1245 	t_up	= tigetstr("cuu1");
1246 	t_eol	= tigetstr("el");
1247 	t_smcup	= tigetstr("smcup");
1248 	t_rmcup = tigetstr("rmcup");
1249 	t_home  = tigetstr("home");
1250 	if ((t_up == (char *)-1) || (t_eol == (char *)-1) ||
1251 	    (t_smcup == (char *)-1) || (t_rmcup == (char *)-1)) {
1252 		opts.o_outpmode &= ~OPT_TERMCAP;
1253 		t_up = t_eol = t_smcup = t_rmcup = movecur = empty_string;
1254 		return;
1255 	}
1256 	if (t_up == NULL || t_eol == NULL) {
1257 		opts.o_outpmode &= ~OPT_TERMCAP;
1258 		t_eol = t_up = movecur = empty_string;
1259 		return;
1260 	}
1261 	if (t_ulon == (char *)-1 || t_uloff == (char *)-1 ||
1262 	    t_ulon == NULL || t_uloff == NULL) {
1263 		t_ulon = t_uloff = empty_string;  /* can live without it */
1264 	}
1265 	if (t_smcup == NULL || t_rmcup == NULL)
1266 		t_smcup = t_rmcup = empty_string;
1267 	if (t_home == (char *)-1 || t_home == NULL) {
1268 		opts.o_outpmode &= ~OPT_USEHOME;
1269 		t_home = empty_string;
1270 	}
1271 }
1272 
1273 static void
1274 sig_handler(int sig)
1275 {
1276 	switch (sig) {
1277 	case SIGTSTP:	sigtstp = 1;
1278 			break;
1279 	case SIGWINCH:	sigwinch = 1;
1280 			break;
1281 	case SIGINT:
1282 	case SIGTERM:	sigterm = 1;
1283 			break;
1284 	}
1285 }
1286 
1287 static void
1288 set_signals()
1289 {
1290 	(void) signal(SIGTSTP, sig_handler);
1291 	(void) signal(SIGINT, sig_handler);
1292 	(void) signal(SIGTERM, sig_handler);
1293 	if (opts.o_outpmode & OPT_FULLSCREEN)
1294 		(void) signal(SIGWINCH, sig_handler);
1295 }
1296 
1297 static void
1298 fill_table(table_t *table, char *arg, char option)
1299 {
1300 	char *p = strtok(arg, ", ");
1301 
1302 	if (p == NULL)
1303 		Die(gettext("invalid argument for -%c\n"), option);
1304 
1305 	add_element(table, (long)Atoi(p));
1306 	while (p = strtok(NULL, ", "))
1307 		add_element(table, (long)Atoi(p));
1308 }
1309 
1310 static void
1311 fill_prj_table(char *arg)
1312 {
1313 	projid_t projid;
1314 	char *p = strtok(arg, ", ");
1315 
1316 	if (p == NULL)
1317 		Die(gettext("invalid argument for -j\n"));
1318 
1319 	if ((projid = getprojidbyname(p)) == -1)
1320 		projid = Atoi(p);
1321 	add_element(&prj_tbl, (long)projid);
1322 
1323 	while (p = strtok(NULL, ", ")) {
1324 		if ((projid = getprojidbyname(p)) == -1)
1325 			projid = Atoi(p);
1326 		add_element(&prj_tbl, (long)projid);
1327 	}
1328 }
1329 
1330 static void
1331 fill_set_table(char *arg)
1332 {
1333 	char *p = strtok(arg, ", ");
1334 	psetid_t id;
1335 
1336 	if (p == NULL)
1337 		Die(gettext("invalid argument for -C\n"));
1338 
1339 	if ((id = Atoi(p)) == 0)
1340 		id = PS_NONE;
1341 	add_element(&set_tbl, id);
1342 	while (p = strtok(NULL, ", ")) {
1343 		if ((id = Atoi(p)) == 0)
1344 			id = PS_NONE;
1345 		if (!has_element(&set_tbl, id))
1346 			add_element(&set_tbl, id);
1347 	}
1348 }
1349 
1350 static void
1351 Exit()
1352 {
1353 	curses_off();
1354 	list_clear(&lwps);
1355 	list_clear(&users);
1356 	list_clear(&tasks);
1357 	list_clear(&projects);
1358 	list_clear(&zones);
1359 	fd_exit();
1360 }
1361 
1362 
1363 int
1364 main(int argc, char **argv)
1365 {
1366 	DIR *procdir;
1367 	char *p;
1368 	char *sortk = "cpu";	/* default sort key */
1369 	int opt;
1370 	int timeout;
1371 	struct pollfd pollset;
1372 	char key;
1373 
1374 	(void) setlocale(LC_ALL, "");
1375 	(void) textdomain(TEXT_DOMAIN);
1376 	Progname(argv[0]);
1377 	lwpid_init();
1378 	fd_init(Setrlimit());
1379 
1380 	pagesize = sysconf(_SC_PAGESIZE);
1381 
1382 	while ((opt = getopt(argc, argv,
1383 	    "vcd:HmarRLtu:U:n:p:C:P:h:s:S:j:k:TJWz:Z")) != (int)EOF) {
1384 		switch (opt) {
1385 		case 'r':
1386 			opts.o_outpmode |= OPT_NORESOLVE;
1387 			break;
1388 		case 'R':
1389 			opts.o_outpmode |= OPT_REALTIME;
1390 			break;
1391 		case 'c':
1392 			opts.o_outpmode &= ~OPT_TERMCAP;
1393 			opts.o_outpmode &= ~OPT_FULLSCREEN;
1394 			break;
1395 		case 'd':
1396 			if (optarg) {
1397 				if (*optarg == 'u')
1398 					opts.o_outpmode |= OPT_UDATE;
1399 				else if (*optarg == 'd')
1400 					opts.o_outpmode |= OPT_DDATE;
1401 				else
1402 					Usage();
1403 			} else {
1404 				Usage();
1405 			}
1406 			break;
1407 		case 'h':
1408 			fill_table(&lgr_tbl, optarg, 'h');
1409 			break;
1410 		case 'H':
1411 			opts.o_outpmode |= OPT_LGRP;
1412 			break;
1413 		case 'm':
1414 		case 'v':
1415 			opts.o_outpmode &= ~OPT_PSINFO;
1416 			opts.o_outpmode |=  OPT_MSACCT;
1417 			break;
1418 		case 't':
1419 			opts.o_outpmode &= ~OPT_PSINFO;
1420 			opts.o_outpmode |= OPT_USERS;
1421 			break;
1422 		case 'a':
1423 			opts.o_outpmode |= OPT_SPLIT | OPT_USERS;
1424 			break;
1425 		case 'T':
1426 			opts.o_outpmode |= OPT_SPLIT | OPT_TASKS;
1427 			break;
1428 		case 'J':
1429 			opts.o_outpmode |= OPT_SPLIT | OPT_PROJECTS;
1430 			break;
1431 		case 'n':
1432 			if ((p = strtok(optarg, ",")) == NULL)
1433 				Die(gettext("invalid argument for -n\n"));
1434 			opts.o_ntop = Atoi(p);
1435 			if (p = strtok(NULL, ","))
1436 				opts.o_nbottom = Atoi(p);
1437 			opts.o_outpmode &= ~OPT_FULLSCREEN;
1438 			break;
1439 		case 's':
1440 			opts.o_sortorder = -1;
1441 			sortk = optarg;
1442 			break;
1443 		case 'S':
1444 			opts.o_sortorder = 1;
1445 			sortk = optarg;
1446 			break;
1447 		case 'u':
1448 			if ((p = strtok(optarg, ", ")) == NULL)
1449 				Die(gettext("invalid argument for -u\n"));
1450 			add_uid(&euid_tbl, p);
1451 			while (p = strtok(NULL, ", "))
1452 				add_uid(&euid_tbl, p);
1453 			break;
1454 		case 'U':
1455 			if ((p = strtok(optarg, ", ")) == NULL)
1456 				Die(gettext("invalid argument for -U\n"));
1457 			add_uid(&ruid_tbl, p);
1458 			while (p = strtok(NULL, ", "))
1459 				add_uid(&ruid_tbl, p);
1460 			break;
1461 		case 'p':
1462 			fill_table(&pid_tbl, optarg, 'p');
1463 			break;
1464 		case 'C':
1465 			fill_set_table(optarg);
1466 			opts.o_outpmode |= OPT_PSETS;
1467 			break;
1468 		case 'P':
1469 			fill_table(&cpu_tbl, optarg, 'P');
1470 			break;
1471 		case 'k':
1472 			fill_table(&tsk_tbl, optarg, 'k');
1473 			break;
1474 		case 'j':
1475 			fill_prj_table(optarg);
1476 			break;
1477 		case 'L':
1478 			opts.o_outpmode |= OPT_LWPS;
1479 			break;
1480 		case 'W':
1481 			opts.o_outpmode |= OPT_TRUNC;
1482 			break;
1483 		case 'z':
1484 			if ((p = strtok(optarg, ", ")) == NULL)
1485 				Die(gettext("invalid argument for -z\n"));
1486 			add_zone(&zone_tbl, p);
1487 			while (p = strtok(NULL, ", "))
1488 				add_zone(&zone_tbl, p);
1489 			break;
1490 		case 'Z':
1491 			opts.o_outpmode |= OPT_SPLIT | OPT_ZONES;
1492 			break;
1493 		default:
1494 			Usage();
1495 		}
1496 	}
1497 
1498 	(void) atexit(Exit);
1499 	if ((opts.o_outpmode & OPT_USERS) &&
1500 	    !(opts.o_outpmode & OPT_SPLIT))
1501 		opts.o_nbottom = opts.o_ntop;
1502 	if (opts.o_ntop == 0 || opts.o_nbottom == 0)
1503 		Die(gettext("invalid argument for -n\n"));
1504 	if (!(opts.o_outpmode & OPT_SPLIT) && (opts.o_outpmode & OPT_USERS) &&
1505 	    ((opts.o_outpmode & (OPT_PSINFO | OPT_MSACCT))))
1506 		Die(gettext("-t option cannot be used with -v or -m\n"));
1507 
1508 	if ((opts.o_outpmode & OPT_SPLIT) && (opts.o_outpmode & OPT_USERS) &&
1509 	    !((opts.o_outpmode & (OPT_PSINFO | OPT_MSACCT))))
1510 		Die(gettext("-t option cannot be used with "
1511 		    "-a, -J, -T or -Z\n"));
1512 
1513 	if ((opts.o_outpmode & OPT_USERS) &&
1514 	    (opts.o_outpmode & (OPT_TASKS | OPT_PROJECTS | OPT_ZONES)))
1515 		Die(gettext("-a option cannot be used with "
1516 		    "-t, -J, -T or -Z\n"));
1517 
1518 	if (((opts.o_outpmode & OPT_TASKS) &&
1519 	    (opts.o_outpmode & (OPT_PROJECTS|OPT_ZONES))) ||
1520 	    ((opts.o_outpmode & OPT_PROJECTS) &&
1521 	    (opts.o_outpmode & (OPT_TASKS|OPT_ZONES)))) {
1522 		Die(gettext(
1523 		    "-J, -T and -Z options are mutually exclusive\n"));
1524 	}
1525 
1526 	/*
1527 	 * There is not enough space to combine microstate information and
1528 	 * lgroup information and still fit in 80-column output.
1529 	 */
1530 	if ((opts.o_outpmode & OPT_LGRP) && (opts.o_outpmode & OPT_MSACCT)) {
1531 		Die(gettext("-H and -m options are mutually exclusive\n"));
1532 	}
1533 
1534 	if (argc > optind)
1535 		opts.o_interval = Atoi(argv[optind++]);
1536 	if (argc > optind)
1537 		opts.o_count = Atoi(argv[optind++]);
1538 	if (opts.o_count == 0)
1539 		Die(gettext("invalid counter value\n"));
1540 	if (argc > optind)
1541 		Usage();
1542 	if (opts.o_outpmode & OPT_REALTIME)
1543 		Priocntl("RT");
1544 	if (isatty(STDOUT_FILENO) == 1 && isatty(STDIN_FILENO))
1545 		opts.o_outpmode |= OPT_TTY;	/* interactive */
1546 	if (!(opts.o_outpmode & OPT_TTY)) {
1547 		opts.o_outpmode &= ~OPT_TERMCAP; /* no termcap for pipes */
1548 		opts.o_outpmode &= ~OPT_FULLSCREEN;
1549 	}
1550 	if (opts.o_outpmode & OPT_TERMCAP)
1551 		ldtermcap();		/* can turn OPT_TERMCAP off */
1552 	if (opts.o_outpmode & OPT_TERMCAP)
1553 		(void) setsize();
1554 	list_alloc(&lwps, opts.o_ntop);
1555 	list_alloc(&users, opts.o_nbottom);
1556 	list_alloc(&tasks, opts.o_nbottom);
1557 	list_alloc(&projects, opts.o_nbottom);
1558 	list_alloc(&zones, opts.o_nbottom);
1559 	list_alloc(&lgroups, opts.o_nbottom);
1560 	list_setkeyfunc(sortk, &opts, &lwps, LT_LWPS);
1561 	list_setkeyfunc(NULL, &opts, &users, LT_USERS);
1562 	list_setkeyfunc(NULL, &opts, &tasks, LT_TASKS);
1563 	list_setkeyfunc(NULL, &opts, &projects, LT_PROJECTS);
1564 	list_setkeyfunc(NULL, &opts, &zones, LT_ZONES);
1565 	list_setkeyfunc(NULL, &opts, &lgroups, LT_LGRPS);
1566 	if (opts.o_outpmode & OPT_TERMCAP)
1567 		curses_on();
1568 	if ((procdir = opendir("/proc")) == NULL)
1569 		Die(gettext("cannot open /proc directory\n"));
1570 	if (opts.o_outpmode & OPT_TTY) {
1571 		(void) printf(gettext("Please wait...\r"));
1572 		if (!(opts.o_outpmode & OPT_TERMCAP))
1573 			(void) putchar('\n');
1574 		(void) fflush(stdout);
1575 	}
1576 	set_signals();
1577 	pollset.fd = STDIN_FILENO;
1578 	pollset.events = POLLIN;
1579 	timeout = opts.o_interval * MILLISEC;
1580 
1581 	/*
1582 	 * main program loop
1583 	 */
1584 	do {
1585 		if (sigterm == 1)
1586 			break;
1587 		if (sigtstp == 1) {
1588 			curses_off();
1589 			(void) signal(SIGTSTP, SIG_DFL);
1590 			(void) kill(0, SIGTSTP);
1591 			/*
1592 			 * prstat stops here until it receives SIGCONT signal.
1593 			 */
1594 			sigtstp = 0;
1595 			(void) signal(SIGTSTP, sig_handler);
1596 			curses_on();
1597 			print_movecur = FALSE;
1598 			if (opts.o_outpmode & OPT_FULLSCREEN)
1599 				sigwinch = 1;
1600 		}
1601 		if (sigwinch == 1) {
1602 			if (setsize() == 1) {
1603 				list_free(&lwps);
1604 				list_free(&users);
1605 				list_free(&tasks);
1606 				list_free(&projects);
1607 				list_free(&zones);
1608 				list_alloc(&lwps, opts.o_ntop);
1609 				list_alloc(&users, opts.o_nbottom);
1610 				list_alloc(&tasks, opts.o_nbottom);
1611 				list_alloc(&projects, opts.o_nbottom);
1612 				list_alloc(&zones, opts.o_nbottom);
1613 			}
1614 			sigwinch = 0;
1615 			(void) signal(SIGWINCH, sig_handler);
1616 		}
1617 		prstat_scandir(procdir);
1618 		list_refresh(&lwps);
1619 		if (print_movecur)
1620 			(void) putp(movecur);
1621 		print_movecur = TRUE;
1622 		if ((opts.o_outpmode & OPT_PSINFO) ||
1623 		    (opts.o_outpmode & OPT_MSACCT)) {
1624 			list_sort(&lwps);
1625 			list_print(&lwps);
1626 		}
1627 		if (opts.o_outpmode & OPT_USERS) {
1628 			list_getsize(&users);
1629 			list_sort(&users);
1630 			list_print(&users);
1631 			list_clear(&users);
1632 		}
1633 		if (opts.o_outpmode & OPT_TASKS) {
1634 			list_getsize(&tasks);
1635 			list_sort(&tasks);
1636 			list_print(&tasks);
1637 			list_clear(&tasks);
1638 		}
1639 		if (opts.o_outpmode & OPT_PROJECTS) {
1640 			list_getsize(&projects);
1641 			list_sort(&projects);
1642 			list_print(&projects);
1643 			list_clear(&projects);
1644 		}
1645 		if (opts.o_outpmode & OPT_ZONES) {
1646 			list_getsize(&zones);
1647 			list_sort(&zones);
1648 			list_print(&zones);
1649 			list_clear(&zones);
1650 		}
1651 		if (opts.o_count == 1)
1652 			break;
1653 		/*
1654 		 * If poll() returns -1 and sets errno to EINTR here because
1655 		 * the process received a signal, it is Ok to abort this
1656 		 * timeout and loop around because we check the signals at the
1657 		 * top of the loop.
1658 		 */
1659 		if (opts.o_outpmode & OPT_TTY) {
1660 			if (poll(&pollset, (nfds_t)1, timeout) > 0) {
1661 				if (read(STDIN_FILENO, &key, 1) == 1) {
1662 					if (tolower(key) == 'q')
1663 						break;
1664 				}
1665 			}
1666 		} else {
1667 			(void) sleep(opts.o_interval);
1668 		}
1669 	} while (opts.o_count == (-1) || --opts.o_count);
1670 
1671 	if (opts.o_outpmode & OPT_TTY)
1672 		(void) putchar('\r');
1673 	return (0);
1674 }
1675