xref: /illumos-gate/usr/src/cmd/ptools/pfiles/pfiles.c (revision 20a7641f9918de8574b8b3b47dbe35c4bfc78df1)
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) 1994, 2010, Oracle and/or its affiliates. All rights reserved.
24  * Copyright 2012 DEY Storage Systems, Inc.  All rights reserved.
25  */
26 /*
27  * Copyright (c) 2017 Joyent, Inc.  All Rights reserved.
28  * Copyright 2020 OmniOS Community Edition (OmniOSce) Association.
29  */
30 
31 #include <stdio.h>
32 #include <stdlib.h>
33 #include <unistd.h>
34 #include <fcntl.h>
35 #include <ctype.h>
36 #include <string.h>
37 #include <signal.h>
38 #include <dirent.h>
39 #include <limits.h>
40 #include <door.h>
41 #include <sys/types.h>
42 #include <sys/socket.h>
43 #include <sys/stat.h>
44 #include <sys/mkdev.h>
45 #include <sys/stropts.h>
46 #include <sys/timod.h>
47 #include <sys/un.h>
48 #include <libproc.h>
49 #include <netinet/in.h>
50 #include <netinet/udp.h>
51 #include <arpa/inet.h>
52 #include <ucred.h>
53 #include <zone.h>
54 
55 static char *command;
56 static volatile int interrupt;
57 static int Fflag;
58 static boolean_t nflag = B_FALSE;
59 
60 static	void	intr(int);
61 static	void	dofcntl(struct ps_prochandle *, const prfdinfo_t *, int, int);
62 static	void	dosocket(struct ps_prochandle *, const prfdinfo_t *);
63 static	void	dosocknames(struct ps_prochandle *, const prfdinfo_t *);
64 static	void	dofifo(struct ps_prochandle *, const prfdinfo_t *);
65 static	void	show_files(struct ps_prochandle *);
66 static	void	show_fileflags(int);
67 static	void	show_door(struct ps_prochandle *, const prfdinfo_t *);
68 
69 int
70 main(int argc, char **argv)
71 {
72 	int retc = 0;
73 	int opt;
74 	int errflg = 0;
75 	struct ps_prochandle *Pr;
76 
77 	if ((command = strrchr(argv[0], '/')) != NULL)
78 		command++;
79 	else
80 		command = argv[0];
81 
82 	/* options */
83 	while ((opt = getopt(argc, argv, "Fn")) != EOF) {
84 		switch (opt) {
85 		case 'F':		/* force grabbing (no O_EXCL) */
86 			Fflag = PGRAB_FORCE;
87 			break;
88 		case 'n':
89 			nflag = B_TRUE;
90 			break;
91 		default:
92 			errflg = 1;
93 			break;
94 		}
95 	}
96 
97 	argc -= optind;
98 	argv += optind;
99 
100 	if (errflg || argc <= 0) {
101 		(void) fprintf(stderr, "usage:\t%s [-F] { pid | core } ...\n",
102 		    command);
103 		(void) fprintf(stderr,
104 		    "  (report open files of each process)\n");
105 		(void) fprintf(stderr,
106 		    "  -F: force grabbing of the target process\n");
107 		exit(2);
108 	}
109 
110 	/* catch signals from terminal */
111 	if (sigset(SIGHUP, SIG_IGN) == SIG_DFL)
112 		(void) sigset(SIGHUP, intr);
113 	if (sigset(SIGINT, SIG_IGN) == SIG_DFL)
114 		(void) sigset(SIGINT, intr);
115 	if (sigset(SIGQUIT, SIG_IGN) == SIG_DFL)
116 		(void) sigset(SIGQUIT, intr);
117 	(void) sigset(SIGPIPE, intr);
118 	(void) sigset(SIGTERM, intr);
119 
120 	(void) proc_initstdio();
121 
122 
123 	while (--argc >= 0 && !interrupt) {
124 		char *arg;
125 		psinfo_t psinfo;
126 		pid_t pid;
127 		int gret;
128 
129 		(void) proc_flushstdio();
130 
131 		arg = *argv++;
132 
133 		/* get the specified pid and the psinfo struct */
134 		if ((pid = proc_arg_psinfo(arg, PR_ARG_PIDS,
135 		    &psinfo, &gret)) == -1) {
136 
137 			if ((Pr = proc_arg_xgrab(arg, NULL, PR_ARG_CORES,
138 			    Fflag, &gret, NULL)) == NULL) {
139 				(void) fprintf(stderr,
140 				    "%s: cannot examine %s: %s\n",
141 				    command, arg, Pgrab_error(gret));
142 				retc++;
143 				continue;
144 			}
145 			if (proc_arg_psinfo(arg, PR_ARG_ANY, &psinfo,
146 			    &gret) < 0) {
147 				(void) fprintf(stderr,
148 				    "%s: cannot examine %s: %s\n",
149 				    command, arg, Pgrab_error(gret));
150 				retc++;
151 				Prelease(Pr, 0);
152 				continue;
153 			}
154 			(void) printf("core '%s' of %d:\t%.70s\n",
155 			    arg, (int)psinfo.pr_pid, psinfo.pr_psargs);
156 
157 			show_files(Pr);
158 			Prelease(Pr, 0);
159 
160 		} else if ((Pr = Pgrab(pid, Fflag, &gret)) != NULL) {
161 			if (Pcreate_agent(Pr) == 0) {
162 				proc_unctrl_psinfo(&psinfo);
163 				(void) printf("%d:\t%.70s\n",
164 				    (int)pid, psinfo.pr_psargs);
165 				show_files(Pr);
166 				Pdestroy_agent(Pr);
167 			} else {
168 				(void) fprintf(stderr,
169 				    "%s: cannot control process %d\n",
170 				    command, (int)pid);
171 				retc++;
172 			}
173 			Prelease(Pr, 0);
174 			Pr = NULL;
175 		} else {
176 			switch (gret) {
177 			case G_SYS:
178 				proc_unctrl_psinfo(&psinfo);
179 				(void) printf("%d:\t%.70s\n", (int)pid,
180 				    psinfo.pr_psargs);
181 				(void) printf("  [system process]\n");
182 				break;
183 			default:
184 				(void) fprintf(stderr, "%s: %s: %d\n",
185 				    command, Pgrab_error(gret), (int)pid);
186 				retc++;
187 				break;
188 			}
189 		}
190 	}
191 
192 	(void) proc_finistdio();
193 
194 	if (interrupt && retc == 0)
195 		retc++;
196 	return (retc);
197 }
198 
199 /* ARGSUSED */
200 static void
201 intr(int sig)
202 {
203 	interrupt = 1;
204 }
205 
206 /* ------ begin specific code ------ */
207 
208 static int
209 show_paths(uint_t type, const void *data, size_t len, void *arg __unused)
210 {
211 	if (type == PR_PATHNAME)
212 		(void) printf("      %.*s\n", len, data);
213 	return (0);
214 }
215 
216 static int
217 show_file(void *data, const prfdinfo_t *info)
218 {
219 	struct ps_prochandle *Pr = data;
220 	char unknown[12];
221 	char *s;
222 	mode_t mode;
223 
224 	if (interrupt)
225 		return (1);
226 
227 	mode = info->pr_mode;
228 
229 	switch (mode & S_IFMT) {
230 	case S_IFCHR: s = "S_IFCHR"; break;
231 	case S_IFBLK: s = "S_IFBLK"; break;
232 	case S_IFIFO: s = "S_IFIFO"; break;
233 	case S_IFDIR: s = "S_IFDIR"; break;
234 	case S_IFREG: s = "S_IFREG"; break;
235 	case S_IFLNK: s = "S_IFLNK"; break;
236 	case S_IFSOCK: s = "S_IFSOCK"; break;
237 	case S_IFDOOR: s = "S_IFDOOR"; break;
238 	case S_IFPORT: s = "S_IFPORT"; break;
239 	default:
240 		s = unknown;
241 		(void) sprintf(s, "0x%.4x ", (int)mode & S_IFMT);
242 		break;
243 	}
244 
245 	(void) printf("%4d: %s mode:0%.3o", info->pr_fd, s,
246 	    (int)mode & ~S_IFMT);
247 
248 	(void) printf(" dev:%u,%u",
249 	    (unsigned)info->pr_major, (unsigned)info->pr_minor);
250 
251 	if ((mode & S_IFMT) == S_IFPORT) {
252 		(void) printf(" uid:%d gid:%d",
253 		    (int)info->pr_uid, (int)info->pr_gid);
254 		(void) printf(" size:%lld\n", (longlong_t)info->pr_size);
255 		return (0);
256 	}
257 
258 	(void) printf(" ino:%llu uid:%d gid:%d",
259 	    (u_longlong_t)info->pr_ino, (int)info->pr_uid, (int)info->pr_gid);
260 
261 	if ((info->pr_rmajor == (major_t)NODEV) &&
262 	    (info->pr_rminor == (minor_t)NODEV))
263 		(void) printf(" size:%lld\n", (longlong_t)info->pr_size);
264 	else
265 		(void) printf(" rdev:%u,%u\n",
266 		    (unsigned)info->pr_rmajor, (unsigned)info->pr_rminor);
267 
268 	if (!nflag) {
269 		dofcntl(Pr, info,
270 		    (mode & (S_IFMT|S_ENFMT|S_IXGRP)) == (S_IFREG|S_ENFMT),
271 		    (mode & S_IFMT) == S_IFDOOR);
272 
273 		if (Pstate(Pr) != PS_DEAD) {
274 			switch (mode & S_IFMT) {
275 			case S_IFSOCK:
276 				dosocket(Pr, info);
277 				break;
278 			case S_IFIFO:
279 				dofifo(Pr, info);
280 				break;
281 			case S_IFCHR:
282 				/*
283 				 * This may be a TLI endpoint. If so, it will
284 				 * have socket names in the fdinfo and this
285 				 * will print them.
286 				 */
287 				dosocknames(Pr, info);
288 				break;
289 			}
290 		}
291 
292 		(void) proc_fdinfowalk(info, show_paths, NULL);
293 
294 		if (info->pr_offset != -1) {
295 			(void) printf("      offset:%lld\n",
296 			    (long long)info->pr_offset);
297 		}
298 	}
299 
300 	return (0);
301 }
302 
303 static void
304 show_files(struct ps_prochandle *Pr)
305 {
306 	struct rlimit rlim;
307 
308 	if (pr_getrlimit(Pr, RLIMIT_NOFILE, &rlim) == 0) {
309 		ulong_t nfd = rlim.rlim_cur;
310 		if (nfd == RLIM_INFINITY)
311 			(void) printf(
312 			    "  Current rlimit: unlimited file descriptors\n");
313 		else
314 			(void) printf(
315 			    "  Current rlimit: %lu file descriptors\n", nfd);
316 	}
317 
318 	(void) Pfdinfo_iter(Pr, show_file, Pr);
319 }
320 
321 /* examine open file with fcntl() */
322 static void
323 dofcntl(struct ps_prochandle *Pr, const prfdinfo_t *info, int mandatory,
324     int isdoor)
325 {
326 	int fileflags;
327 	int fdflags;
328 
329 	fileflags = info->pr_fileflags;
330 	fdflags = info->pr_fdflags;
331 
332 	if (fileflags != -1 || fdflags != -1) {
333 		(void) printf("      ");
334 		if (fileflags != -1)
335 			show_fileflags(fileflags);
336 		if (fdflags != -1 && (fdflags & FD_CLOEXEC))
337 			(void) printf(" FD_CLOEXEC");
338 		if (isdoor && (Pstate(Pr) != PS_DEAD))
339 			show_door(Pr, info);
340 		(void) fputc('\n', stdout);
341 	} else if (isdoor && (Pstate(Pr) != PS_DEAD)) {
342 		(void) printf("    ");
343 		show_door(Pr, info);
344 		(void) fputc('\n', stdout);
345 	}
346 
347 	if (Pstate(Pr) != PS_DEAD) {
348 		if (info->pr_locktype != F_UNLCK &&
349 		    (info->pr_locksysid != -1 || info->pr_lockpid != -1)) {
350 			unsigned long sysid = info->pr_locksysid;
351 
352 			(void) printf("      %s %s lock set",
353 			    mandatory ? "mandatory" : "advisory",
354 			    info->pr_locktype == F_RDLCK? "read" : "write");
355 			if (sysid)
356 				(void) printf(" by system 0x%lX", sysid);
357 			if (info->pr_lockpid != -1)
358 				(void) printf(" by process %d",
359 				    (int)info->pr_lockpid);
360 			(void) fputc('\n', stdout);
361 		}
362 	}
363 }
364 
365 #define	ALL_O_FLAGS	O_ACCMODE | O_NDELAY | O_NONBLOCK | O_APPEND | \
366 			O_SYNC | O_DSYNC | O_RSYNC | O_XATTR | \
367 			O_CREAT | O_TRUNC | O_EXCL | O_NOCTTY | O_LARGEFILE
368 
369 static void
370 show_fileflags(int flags)
371 {
372 	char buffer[136];
373 	char *str = buffer;
374 
375 	switch (flags & O_ACCMODE) {
376 	case O_RDONLY:
377 		(void) strcpy(str, "O_RDONLY");
378 		break;
379 	case O_WRONLY:
380 		(void) strcpy(str, "O_WRONLY");
381 		break;
382 	case O_RDWR:
383 		(void) strcpy(str, "O_RDWR");
384 		break;
385 	case O_SEARCH:
386 		(void) strcpy(str, "O_SEARCH");
387 		break;
388 	case O_EXEC:
389 		(void) strcpy(str, "O_EXEC");
390 		break;
391 	default:
392 		(void) sprintf(str, "0x%x", flags & O_ACCMODE);
393 		break;
394 	}
395 
396 	if (flags & O_NDELAY)
397 		(void) strcat(str, "|O_NDELAY");
398 	if (flags & O_NONBLOCK)
399 		(void) strcat(str, "|O_NONBLOCK");
400 	if (flags & O_APPEND)
401 		(void) strcat(str, "|O_APPEND");
402 	if (flags & O_SYNC)
403 		(void) strcat(str, "|O_SYNC");
404 	if (flags & O_DSYNC)
405 		(void) strcat(str, "|O_DSYNC");
406 	if (flags & O_RSYNC)
407 		(void) strcat(str, "|O_RSYNC");
408 	if (flags & O_CREAT)
409 		(void) strcat(str, "|O_CREAT");
410 	if (flags & O_TRUNC)
411 		(void) strcat(str, "|O_TRUNC");
412 	if (flags & O_EXCL)
413 		(void) strcat(str, "|O_EXCL");
414 	if (flags & O_NOCTTY)
415 		(void) strcat(str, "|O_NOCTTY");
416 	if (flags & O_LARGEFILE)
417 		(void) strcat(str, "|O_LARGEFILE");
418 	if (flags & O_XATTR)
419 		(void) strcat(str, "|O_XATTR");
420 	if (flags & ~(ALL_O_FLAGS))
421 		(void) sprintf(str + strlen(str), "|0x%x",
422 		    flags & ~(ALL_O_FLAGS));
423 
424 	(void) printf("%s", str);
425 }
426 
427 /* show process on the other end of a door, socket or fifo */
428 static void
429 show_peer_process(pid_t ppid)
430 {
431 	psinfo_t psinfo;
432 
433 	if (proc_get_psinfo(ppid, &psinfo) == 0)
434 		(void) printf(" %s[%d]", psinfo.pr_fname, (int)ppid);
435 	else
436 		(void) printf(" pid %d", (int)ppid);
437 }
438 
439 /* show door info */
440 static void
441 show_door(struct ps_prochandle *Pr, const prfdinfo_t *info)
442 {
443 	door_info_t door_info;
444 
445 	if (pr_door_info(Pr, info->pr_fd, &door_info) != 0)
446 		return;
447 
448 	(void) printf("  door to");
449 	show_peer_process(door_info.di_target);
450 }
451 
452 /*
453  * Print out the socket address pointed to by `sa'.  `len' is only
454  * needed for AF_UNIX sockets.
455  */
456 static void
457 show_sockaddr(const char *str, const struct sockaddr *sa, socklen_t len)
458 {
459 	struct sockaddr_in *so_in = (struct sockaddr_in *)(void *)sa;
460 	struct sockaddr_in6 *so_in6 = (struct sockaddr_in6 *)(void *)sa;
461 	struct sockaddr_un *so_un = (struct sockaddr_un *)sa;
462 	char  abuf[INET6_ADDRSTRLEN];
463 	const char *p;
464 
465 	if (len == 0)
466 		return;
467 
468 	switch (sa->sa_family) {
469 	default:
470 		return;
471 	case AF_INET:
472 		(void) printf("\t%s: AF_INET %s  port: %u\n", str,
473 		    inet_ntop(AF_INET, &so_in->sin_addr, abuf, sizeof (abuf)),
474 		    ntohs(so_in->sin_port));
475 		return;
476 	case AF_INET6:
477 		(void) printf("\t%s: AF_INET6 %s  port: %u\n", str,
478 		    inet_ntop(AF_INET6, &so_in6->sin6_addr,
479 		    abuf, sizeof (abuf)),
480 		    ntohs(so_in->sin_port));
481 		return;
482 	case AF_UNIX:
483 		if (len >= sizeof (so_un->sun_family)) {
484 			(void) printf("\t%s: AF_UNIX %.*s\n",
485 			    str, len - sizeof (so_un->sun_family),
486 			    so_un->sun_path);
487 		}
488 		return;
489 	case AF_IMPLINK:	p = "AF_IMPLINK";	break;
490 	case AF_PUP:		p = "AF_PUP";		break;
491 	case AF_CHAOS:		p = "AF_CHAOS";		break;
492 	case AF_NS:		p = "AF_NS";		break;
493 	case AF_NBS:		p = "AF_NBS";		break;
494 	case AF_ECMA:		p = "AF_ECMA";		break;
495 	case AF_DATAKIT:	p = "AF_DATAKIT";	break;
496 	case AF_CCITT:		p = "AF_CCITT";		break;
497 	case AF_SNA:		p = "AF_SNA";		break;
498 	case AF_DECnet:		p = "AF_DECnet";	break;
499 	case AF_DLI:		p = "AF_DLI";		break;
500 	case AF_LAT:		p = "AF_LAT";		break;
501 	case AF_HYLINK:		p = "AF_HYLINK";	break;
502 	case AF_APPLETALK:	p = "AF_APPLETALK";	break;
503 	case AF_NIT:		p = "AF_NIT";		break;
504 	case AF_802:		p = "AF_802";		break;
505 	case AF_OSI:		p = "AF_OSI";		break;
506 	case AF_X25:		p = "AF_X25";		break;
507 	case AF_OSINET:		p = "AF_OSINET";	break;
508 	case AF_GOSIP:		p = "AF_GOSIP";		break;
509 	case AF_IPX:		p = "AF_IPX";		break;
510 	case AF_ROUTE:		p = "AF_ROUTE";		break;
511 	case AF_KEY:		p = "AF_KEY";		break;
512 	case AF_POLICY:		p = "AF_POLICY";	break;
513 	case AF_LINK:		p = "AF_LINK";		break;
514 	}
515 
516 	(void) printf("\t%s: %s\n", str, p);
517 }
518 
519 /*
520  * Print out the process information for the other end of local sockets
521  * and fifos
522  */
523 static void
524 show_ucred(const char *str, ucred_t *cred)
525 {
526 	pid_t upid = ucred_getpid(cred);
527 	zoneid_t uzid = ucred_getzoneid(cred);
528 	char zonename[ZONENAME_MAX];
529 
530 	if ((upid != -1) || (uzid != -1)) {
531 		(void) printf("\t%s:", str);
532 		if (upid != -1) {
533 			show_peer_process(upid);
534 		}
535 		if (uzid != -1) {
536 			if (getzonenamebyid(uzid, zonename, sizeof (zonename))
537 			    != -1) {
538 				(void) printf(" zone: %s[%d]", zonename,
539 				    (int)uzid);
540 			} else {
541 				(void) printf(" zoneid: %d", (int)uzid);
542 			}
543 		}
544 		(void) printf("\n");
545 	}
546 }
547 
548 static void
549 show_socktype(uint_t type)
550 {
551 	static const char *types[] = {
552 		NULL, "DGRAM", "STREAM", NULL, "RAW", "RDM", "SEQPACKET"
553 	};
554 
555 	if (type < sizeof (types) / sizeof (*types) && types[type] != NULL)
556 		(void) printf("\tSOCK_%s\n", types[type]);
557 	else
558 		(void) printf("\tunknown socket type %u\n", type);
559 }
560 
561 #define	BUFSIZE	200
562 static void
563 show_sockopts(struct ps_prochandle *Pr, const prfdinfo_t *info)
564 {
565 	const int *val;
566 	size_t vlen;
567 	char buf[BUFSIZE];
568 	char buf1[32];
569 	char ipaddr[INET_ADDRSTRLEN];
570 	int i;
571 	const in_addr_t *nexthop_val;
572 	const prsockopts_bool_opts_t *opts;
573 	struct boolopt {
574 		int		opt;
575 		const char	*name;
576 	};
577 	static struct boolopt boolopts[] = {
578 	    { PR_SO_DEBUG,		"SO_DEBUG,"	},
579 	    { PR_SO_REUSEADDR,		"SO_REUSEADDR,"	},
580 	    { PR_SO_KEEPALIVE,		"SO_KEEPALIVE,"	},
581 	    { PR_SO_DONTROUTE,		"SO_DONTROUTE,"	},
582 	    { PR_SO_BROADCAST,		"SO_BROADCAST,"	},
583 	    { PR_SO_OOBINLINE,		"SO_OOBINLINE,"	},
584 	    { PR_SO_DGRAM_ERRIND,	"SO_DGRAM_ERRIND,"},
585 	    { PR_SO_ALLZONES,		"SO_ALLZONES,"	},
586 	    { PR_SO_MAC_EXEMPT,		"SO_MAC_EXEMPT," },
587 	    { PR_SO_MAC_IMPLICIT,	"SO_MAC_IMPLICIT," },
588 	    { PR_SO_EXCLBIND,		"SO_EXCLBIND," },
589 	    { PR_SO_VRRP,		"SO_VRRP," },
590 	    { PR_UDP_NAT_T_ENDPOINT,	"UDP_NAT_T_ENDPOINT," },
591 	};
592 	const struct linger *l;
593 
594 	opts = proc_fdinfo_misc(info, PR_SOCKOPTS_BOOL_OPTS, NULL);
595 
596 	buf[0] = '!';		/* sentinel value, never printed */
597 	buf[1] = '\0';
598 
599 	for (i = 0; i < sizeof (boolopts) / sizeof (boolopts[0]); i++) {
600 		if (opts != NULL && opts->prsock_bool_opts & boolopts[i].opt)
601 			(void) strlcat(buf, boolopts[i].name, sizeof (buf));
602 	}
603 
604 	l = proc_fdinfo_misc(info, PR_SOCKOPT_LINGER, NULL);
605 	if (l != NULL && l->l_onoff != 0) {
606 		(void) snprintf(buf1, sizeof (buf1), "SO_LINGER(%d),",
607 		    l->l_linger);
608 		(void) strlcat(buf, buf1, sizeof (buf));
609 	}
610 
611 	val = proc_fdinfo_misc(info, PR_SOCKOPT_SNDBUF, NULL);
612 	if (val != NULL) {
613 		(void) snprintf(buf1, sizeof (buf1), "SO_SNDBUF(%d),", *val);
614 		(void) strlcat(buf, buf1, sizeof (buf));
615 	}
616 
617 	val = proc_fdinfo_misc(info, PR_SOCKOPT_RCVBUF, NULL);
618 	if (val != NULL) {
619 		(void) snprintf(buf1, sizeof (buf1), "SO_RCVBUF(%d),", *val);
620 		(void) strlcat(buf, buf1, sizeof (buf));
621 	}
622 
623 
624 	nexthop_val = proc_fdinfo_misc(info, PR_SOCKOPT_IP_NEXTHOP, &vlen);
625 	if (nexthop_val != NULL && vlen > 0) {
626 		(void) inet_ntop(AF_INET, (void *) nexthop_val,
627 		    ipaddr, sizeof (ipaddr));
628 		(void) snprintf(buf1, sizeof (buf1), "IP_NEXTHOP(%s),",
629 		    ipaddr);
630 		(void) strlcat(buf, buf1, sizeof (buf));
631 	}
632 
633 	buf[strlen(buf) - 1] = '\0'; /* overwrites sentinel if no options */
634 	if (buf[1] != '\0')
635 		(void) printf("\t%s\n", buf+1);
636 }
637 
638 #define	MAXNALLOC	32
639 static void
640 show_sockfilters(struct ps_prochandle *Pr, const prfdinfo_t *info)
641 {
642 	struct fil_info *fi;
643 	int i = 0, nalloc = 2, len = nalloc * sizeof (*fi);
644 	boolean_t printhdr = B_TRUE;
645 	int fd = info->pr_fd;
646 
647 	fi = calloc(nalloc, sizeof (*fi));
648 	if (fi == NULL) {
649 		perror("calloc");
650 		return;
651 	}
652 	/* CONSTCOND */
653 	while (1) {
654 		if (pr_getsockopt(Pr, fd, SOL_FILTER, FIL_LIST, fi, &len) != 0)
655 			break;
656 		/* No filters */
657 		if (len == 0)
658 			break;
659 		/* Make sure buffer was large enough */
660 		if (fi->fi_pos >= nalloc) {
661 			struct fil_info *new;
662 
663 			nalloc = fi->fi_pos + 1;
664 			if (nalloc > MAXNALLOC)
665 				break;
666 			len = nalloc * sizeof (*fi);
667 			new = realloc(fi, nalloc * sizeof (*fi));
668 			if (new == NULL) {
669 				perror("realloc");
670 				break;
671 			}
672 			fi = new;
673 			continue;
674 		}
675 
676 		for (i = 0; (i + 1) * sizeof (*fi) <= len; i++) {
677 			if (fi[i].fi_flags & FILF_BYPASS)
678 				continue;
679 			if (printhdr) {
680 				(void) printf("\tfilters: ");
681 				printhdr = B_FALSE;
682 			}
683 			(void) printf("%s", fi[i].fi_name);
684 			if (fi[i].fi_flags != 0) {
685 				(void) printf("(");
686 				if (fi[i].fi_flags & FILF_AUTO)
687 					(void) printf("auto,");
688 				if (fi[i].fi_flags & FILF_PROG)
689 					(void) printf("prog,");
690 				(void) printf("\b)");
691 			}
692 			if (fi[i].fi_pos == 0) /* last one */
693 				break;
694 			(void) printf(",");
695 		}
696 		if (!printhdr)
697 			(void) printf("\n");
698 		break;
699 	}
700 	free(fi);
701 }
702 
703 /* print peer credentials for sockets and named pipes */
704 static void
705 dopeerucred(struct ps_prochandle *Pr, const prfdinfo_t *info)
706 {
707 	ucred_t *peercred = NULL;	/* allocated by getpeerucred */
708 
709 	if (pr_getpeerucred(Pr, info->pr_fd, &peercred) == 0) {
710 		show_ucred("peer", peercred);
711 		ucred_free(peercred);
712 	}
713 }
714 
715 static void
716 dosocknames(struct ps_prochandle *Pr, const prfdinfo_t *info)
717 {
718 	const struct sockaddr *sa;
719 	size_t vlen;
720 
721 	sa = proc_fdinfo_misc(info, PR_SOCKETNAME, &vlen);
722 	if (sa != NULL)
723 		show_sockaddr("sockname", sa, vlen);
724 
725 	sa = proc_fdinfo_misc(info, PR_PEERSOCKNAME, &vlen);
726 	if (sa != NULL)
727 		show_sockaddr("peername", sa, vlen);
728 }
729 
730 /* the file is a socket */
731 static void
732 dosocket(struct ps_prochandle *Pr, const prfdinfo_t *info)
733 {
734 	const int *type;
735 
736 	type = proc_fdinfo_misc(info, PR_SOCKOPT_TYPE, NULL);
737 	if (type != NULL)
738 		show_socktype((uint_t)*type);
739 
740 	show_sockopts(Pr, info);
741 	show_sockfilters(Pr, info);
742 	dosocknames(Pr, info);
743 	dopeerucred(Pr, info);
744 }
745 
746 /* the file is a fifo (aka "named pipe") */
747 static void
748 dofifo(struct ps_prochandle *Pr, const prfdinfo_t *info)
749 {
750 	dopeerucred(Pr, info);
751 }
752