xref: /netbsd/usr.sbin/pstat/pstat.c (revision c4a72b64)
1 /*	$NetBSD: pstat.c,v 1.74 2002/11/06 09:32:26 jdolecek Exp $	*/
2 
3 /*-
4  * Copyright (c) 1980, 1991, 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. All advertising materials mentioning features or use of this software
16  *    must display the following acknowledgement:
17  *	This product includes software developed by the University of
18  *	California, Berkeley and its contributors.
19  * 4. Neither the name of the University nor the names of its contributors
20  *    may be used to endorse or promote products derived from this software
21  *    without specific prior written permission.
22  *
23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33  * SUCH DAMAGE.
34  */
35 
36 #include <sys/cdefs.h>
37 #ifndef lint
38 __COPYRIGHT("@(#) Copyright (c) 1980, 1991, 1993, 1994\n\
39 	The Regents of the University of California.  All rights reserved.\n");
40 #endif /* not lint */
41 
42 #ifndef lint
43 #if 0
44 static char sccsid[] = "@(#)pstat.c	8.16 (Berkeley) 5/9/95";
45 #else
46 __RCSID("$NetBSD: pstat.c,v 1.74 2002/11/06 09:32:26 jdolecek Exp $");
47 #endif
48 #endif /* not lint */
49 
50 #include <sys/param.h>
51 #include <sys/time.h>
52 #include <sys/vnode.h>
53 #include <sys/ucred.h>
54 #define _KERNEL
55 #include <sys/file.h>
56 #include <ufs/ufs/inode.h>
57 #define NFS
58 #include <sys/mount.h>
59 #undef NFS
60 #include <sys/uio.h>
61 #include <sys/namei.h>
62 #include <miscfs/genfs/layer.h>
63 #include <miscfs/union/union.h>
64 #undef _KERNEL
65 #include <sys/stat.h>
66 #include <nfs/nfsproto.h>
67 #include <nfs/rpcv2.h>
68 #include <nfs/nfs.h>
69 #include <nfs/nfsnode.h>
70 #include <sys/ioctl.h>
71 #include <sys/tty.h>
72 #include <sys/conf.h>
73 #include <sys/device.h>
74 
75 #include <sys/sysctl.h>
76 
77 #include <err.h>
78 #include <kvm.h>
79 #include <limits.h>
80 #include <nlist.h>
81 #include <stdio.h>
82 #include <stdlib.h>
83 #include <string.h>
84 #include <unistd.h>
85 
86 #include "swapctl.h"
87 
88 struct nlist nl[] = {
89 #define	V_MOUNTLIST	0
90 	{ "_mountlist" },	/* address of head of mount list. */
91 #define	V_NUMV		1
92 	{ "_numvnodes" },
93 #define	FNL_NFILE	2
94 	{ "_nfiles" },
95 #define FNL_MAXFILE	3
96 	{ "_maxfiles" },
97 #define TTY_NTTY	4
98 	{ "_tty_count" },
99 #define TTY_TTYLIST	5
100 	{ "_ttylist" },
101 #define NLMANDATORY TTY_TTYLIST	/* names up to here are mandatory */
102 	{ "" }
103 };
104 
105 int	usenumflag;
106 int	totalflag;
107 int	kflag;
108 char	*nlistf	= NULL;
109 char	*memf	= NULL;
110 kvm_t	*kd;
111 
112 static const struct {
113 	u_int m_flag;
114 	const char *m_name;
115 } mnt_flags[] = {
116 	{ MNT_RDONLY, "rdonly" },
117 	{ MNT_SYNCHRONOUS, "sync" },
118 	{ MNT_NOEXEC, "noexec" },
119 	{ MNT_NOSUID, "nosuid" },
120 	{ MNT_NODEV, "nodev" },
121 	{ MNT_UNION, "union" },
122 	{ MNT_ASYNC, "async" },
123 	{ MNT_NOCOREDUMP, "nocoredump" },
124 	{ MNT_NOATIME, "noatime" },
125 	{ MNT_SYMPERM, "symperm" },
126 	{ MNT_NODEVMTIME, "nodevmtime" },
127 	{ MNT_SOFTDEP, "softdep" },
128 	{ MNT_EXRDONLY, "exrdonly" },
129 	{ MNT_EXPORTED, "exported" },
130 	{ MNT_DEFEXPORTED, "defexported" },
131 	{ MNT_EXPORTANON, "exportanon" },
132 	{ MNT_EXKERB, "exkerb" },
133 	{ MNT_EXNORESPORT, "exnoresport" },
134 	{ MNT_EXPUBLIC, "expublic" },
135 	{ MNT_LOCAL, "local" },
136 	{ MNT_QUOTA, "quota" },
137 	{ MNT_ROOTFS, "rootfs" },
138 	{ MNT_UPDATE, "update" },
139 	{ MNT_DELEXPORT, "delexport" },
140 	{ MNT_RELOAD, "reload" },
141 	{ MNT_FORCE, "force" },
142 	{ MNT_GONE, "gone" },
143 	{ MNT_UNMOUNT, "unmount" },
144 	{ MNT_WANTRDWR, "wantrdwr" },
145 	{ 0 }
146 };
147 
148 struct flagbit_desc {
149 	u_int fd_flags;
150 	char fd_mark;
151 };
152 
153 #define	SVAR(var) __STRING(var)	/* to force expansion */
154 #define	KGET(idx, var)							\
155 	KGET1(idx, &var, sizeof(var), SVAR(var))
156 #define	KGET1(idx, p, s, msg)						\
157 	KGET2(nl[idx].n_value, p, s, msg)
158 #define	KGET2(addr, p, s, msg) do {					\
159 	if (kvm_read(kd, (u_long)(addr), p, s) != s)			\
160 		warnx("cannot read %s: %s", msg, kvm_geterr(kd));	\
161 } while (/* CONSTCOND */0)
162 #define	KGETRET(addr, p, s, msg) do {					\
163 	if (kvm_read(kd, (u_long)(addr), p, s) != s) {			\
164 		warnx("cannot read %s: %s", msg, kvm_geterr(kd));	\
165 		return (0);						\
166 	}								\
167 } while (/* CONSTCOND */0)
168 
169 #if 1				/* This is copied from vmstat/vmstat.c */
170 /*
171  * Print single word.  `ovflow' is number of characters didn't fit
172  * on the last word.  `fmt' is a format string to print this word.
173  * It must contain asterisk for field width.  `width' is a width
174  * occupied by this word.  `fixed' is a number of constant chars in
175  * `fmt'.  `val' is a value to be printed using format string `fmt'.
176  */
177 #define	PRWORD(ovflw, fmt, width, fixed, val) do {	\
178 	(ovflw) += printf((fmt),			\
179 	    (width) - (fixed) - (ovflw) > 0 ?		\
180 	    (width) - (fixed) - (ovflw) : 0,		\
181 	    (val)) - (width);				\
182 	if ((ovflw) < 0)				\
183 		(ovflw) = 0;				\
184 } while (/* CONSTCOND */0)
185 #endif
186 
187 void	filemode __P((void));
188 int	getfiles __P((char **, int *));
189 int	getflags __P((const struct flagbit_desc *, char *, u_int));
190 struct mount *
191 	getmnt __P((struct mount *));
192 char *	kinfo_vnodes __P((int *));
193 void	layer_header __P((void));
194 int	layer_print __P((struct vnode *, int));
195 char *	loadvnodes __P((int *));
196 int	main __P((int, char **));
197 void	mount_print __P((struct mount *));
198 void	nfs_header __P((void));
199 int	nfs_print __P((struct vnode *, int));
200 void	ttymode __P((void));
201 void	ttyprt __P((struct tty *));
202 void	ufs_header __P((void));
203 int	ufs_print __P((struct vnode *, int));
204 int	ext2fs_print __P((struct vnode *, int));
205 void	union_header __P((void));
206 int	union_print __P((struct vnode *, int));
207 void	usage __P((void));
208 void	vnode_header __P((void));
209 int	vnode_print __P((struct vnode *, struct vnode *));
210 void	vnodemode __P((void));
211 
212 int
213 main(argc, argv)
214 	int argc;
215 	char *argv[];
216 {
217 	int ch, i, quit, ret;
218 	int fileflag, swapflag, ttyflag, vnodeflag;
219 	gid_t egid = getegid();
220 	char buf[_POSIX2_LINE_MAX];
221 
222 	setegid(getgid());
223 	fileflag = swapflag = ttyflag = vnodeflag = 0;
224 	while ((ch = getopt(argc, argv, "TM:N:fiknstv")) != -1)
225 		switch (ch) {
226 		case 'f':
227 			fileflag = 1;
228 			break;
229 		case 'M':
230 			memf = optarg;
231 			break;
232 		case 'N':
233 			nlistf = optarg;
234 			break;
235 		case 'n':
236 			usenumflag = 1;
237 			break;
238 		case 's':
239 			swapflag = 1;
240 			break;
241 		case 'T':
242 			totalflag = 1;
243 			break;
244 		case 't':
245 			ttyflag = 1;
246 			break;
247 		case 'k':
248 			kflag = 1;
249 			break;
250 		case 'v':
251 		case 'i':		/* Backward compatibility. */
252 			vnodeflag = 1;
253 			break;
254 		default:
255 			usage();
256 		}
257 	argc -= optind;
258 	argv += optind;
259 
260 	/*
261 	 * Discard setgid privileges.  If not the running kernel, we toss
262 	 * them away totally so that bad guys can't print interesting stuff
263 	 * from kernel memory, otherwise switch back to kmem for the
264 	 * duration of the kvm_openfiles() call.
265 	 */
266 	if (nlistf != NULL || memf != NULL)
267 		(void)setgid(getgid());
268 	else
269 		(void)setegid(egid);
270 
271 	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0)
272 		errx(1, "kvm_openfiles: %s", buf);
273 
274 	/* get rid of it now anyway */
275 	if (nlistf == NULL && memf == NULL)
276 		(void)setgid(getgid());
277 	if ((ret = kvm_nlist(kd, nl)) != 0) {
278 		if (ret == -1)
279 			errx(1, "kvm_nlist: %s", kvm_geterr(kd));
280 		for (i = quit = 0; i <= NLMANDATORY; i++)
281 			if (!nl[i].n_value) {
282 				quit = 1;
283 				warnx("undefined symbol: %s", nl[i].n_name);
284 			}
285 		if (quit)
286 			exit(1);
287 	}
288 	if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag))
289 		usage();
290 	if (fileflag || totalflag)
291 		filemode();
292 	if (vnodeflag || totalflag)
293 		vnodemode();
294 	if (ttyflag)
295 		ttymode();
296 	if (swapflag || totalflag)
297 		list_swap(0, kflag, 0, totalflag, 1);
298 	exit(0);
299 }
300 
301 #define	VPTRSZ  sizeof(struct vnode *)
302 #define	VNODESZ sizeof(struct vnode)
303 #define	PTRSTRWIDTH ((int)sizeof(void *) * 2) /* Width of resulting string
304 						 when pointer is printed
305 						 in hexadecimal. */
306 
307 void
308 vnodemode()
309 {
310 	char *e_vnodebase, *endvnode, *evp;
311 	struct vnode *vp;
312 	struct mount *maddr, *mp;
313 	int numvnodes, ovflw;
314 	int (*vnode_fsprint)
315 	    __P((struct vnode *, int)); /* per-fs data printer */
316 
317 	mp = NULL;
318 	e_vnodebase = loadvnodes(&numvnodes);
319 	if (totalflag) {
320 		(void)printf("%7d vnodes\n", numvnodes);
321 		goto out;
322 	}
323 	endvnode = e_vnodebase + numvnodes * (VPTRSZ + VNODESZ);
324 	(void)printf("%d active vnodes\n", numvnodes);
325 
326 #define	ST	mp->mnt_stat
327 #define	FSTYPE_IS(mp, name)						\
328 	(strncmp((mp)->mnt_stat.f_fstypename, (name), MFSNAMELEN) == 0)
329 	maddr = NULL;
330 	vnode_fsprint = NULL;
331 	for (evp = e_vnodebase; evp < endvnode; evp += VPTRSZ + VNODESZ) {
332 		vp = (struct vnode *)(evp + VPTRSZ);
333 		if (vp->v_mount != maddr) {
334 			/*
335 			 * New filesystem
336 			 */
337 			if ((mp = getmnt(vp->v_mount)) == NULL)
338 				continue;
339 			maddr = vp->v_mount;
340 			mount_print(mp);
341 			vnode_header();
342 			if (FSTYPE_IS(mp, MOUNT_FFS) ||
343 			    FSTYPE_IS(mp, MOUNT_MFS)) {
344 				ufs_header();
345 				vnode_fsprint = ufs_print;
346 			} else if (FSTYPE_IS(mp, MOUNT_NFS)) {
347 				nfs_header();
348 				vnode_fsprint = nfs_print;
349 			} else if (FSTYPE_IS(mp, MOUNT_EXT2FS)) {
350 				ufs_header();
351 				vnode_fsprint = ext2fs_print;
352 			} else if (FSTYPE_IS(mp, MOUNT_NULL) ||
353 			    FSTYPE_IS(mp, MOUNT_OVERLAY) ||
354 			    FSTYPE_IS(mp, MOUNT_UMAP)) {
355 				layer_header();
356 				vnode_fsprint = layer_print;
357 			} else if (FSTYPE_IS(mp, MOUNT_UNION)) {
358 				union_header();
359 				vnode_fsprint = union_print;
360 			} else
361 				vnode_fsprint = NULL;
362 			(void)printf("\n");
363 		}
364 		ovflw = vnode_print(*(struct vnode **)evp, vp);
365 		if (VTOI(vp) != NULL && vnode_fsprint != NULL)
366 			(*vnode_fsprint)(vp, ovflw);
367 		(void)printf("\n");
368 	}
369 
370  out:
371 	free(e_vnodebase);
372 }
373 
374 int
375 getflags(fd, p, flags)
376 	const struct flagbit_desc *fd;
377 	char *p;
378 	u_int flags;
379 {
380 	char *q = p;
381 
382 	if (flags == 0) {
383 		*p++ = '-';
384 		*p = '\0';
385 		return (0);
386 	}
387 
388 	for (; fd->fd_flags != 0; fd++)
389 		if ((flags & fd->fd_flags) != 0)
390 			*p++ = fd->fd_mark;
391 	*p = '\0';
392 	return (p - q);
393 }
394 
395 const struct flagbit_desc vnode_flags[] = {
396 	{ VROOT,	'R' },
397 	{ VTEXT,	'T' },
398 	{ VSYSTEM,	'S' },
399 	{ VISTTY,	'I' },
400 	{ VEXECMAP,	'E' },
401 	{ VXLOCK,	'L' },
402 	{ VXWANT,	'W' },
403 	{ VBWAIT,	'B' },
404 	{ VALIASED,	'A' },
405 	{ VDIROP,	'D' },
406 	{ VLAYER,	'Y' },
407 	{ VONWORKLST,	'O' },
408 	{ 0,		'\0' },
409 };
410 
411 void
412 vnode_header()
413 {
414 
415 	(void)printf("%-*s TYP VFLAG  USE HOLD TAG NPAGE",
416 	    PTRSTRWIDTH, "ADDR");
417 }
418 
419 int
420 vnode_print(avnode, vp)
421 	struct vnode *avnode;
422 	struct vnode *vp;
423 {
424 	char *type, flags[sizeof(vnode_flags) / sizeof(vnode_flags[0])];
425 	int ovflw;
426 
427 	/*
428 	 * set type
429 	 */
430 	switch (vp->v_type) {
431 	case VNON:
432 		type = "non"; break;
433 	case VREG:
434 		type = "reg"; break;
435 	case VDIR:
436 		type = "dir"; break;
437 	case VBLK:
438 		type = "blk"; break;
439 	case VCHR:
440 		type = "chr"; break;
441 	case VLNK:
442 		type = "lnk"; break;
443 	case VSOCK:
444 		type = "soc"; break;
445 	case VFIFO:
446 		type = "fif"; break;
447 	case VBAD:
448 		type = "bad"; break;
449 	default:
450 		type = "unk"; break;
451 	}
452 	/*
453 	 * gather flags
454 	 */
455 	(void)getflags(vnode_flags, flags, vp->v_flag);
456 
457 	ovflw = 0;
458 	PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)avnode);
459 	PRWORD(ovflw, " %*s", 4, 1, type);
460 	PRWORD(ovflw, " %*s", 6, 1, flags);
461 	PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_usecount);
462 	PRWORD(ovflw, " %*ld", 5, 1, (long)vp->v_holdcnt);
463 	PRWORD(ovflw, " %*d", 4, 1, vp->v_tag);
464 	PRWORD(ovflw, " %*d", 6, 1, vp->v_uobj.uo_npages);
465 	return (ovflw);
466 }
467 
468 const struct flagbit_desc ufs_flags[] = {
469 	{ IN_ACCESS,	'A' },
470 	{ IN_CHANGE,	'C' },
471 	{ IN_UPDATE,	'U' },
472 	{ IN_MODIFIED,	'M' },
473 	{ IN_ACCESSED,	'a' },
474 	{ IN_RENAME,	'R' },
475 	{ IN_SHLOCK,	'S' },
476 	{ IN_EXLOCK,	'E' },
477 	{ IN_CLEANING,	'c' },
478 	{ IN_ADIROP,	'D' },
479 	{ IN_SPACECOUNTED, 's' },
480 	{ 0,		'\0' },
481 };
482 
483 void
484 ufs_header()
485 {
486 
487 	(void)printf(" FILEID IFLAG RDEV|SZ");
488 }
489 
490 int
491 ufs_print(vp, ovflw)
492 	struct vnode *vp;
493 	int ovflw;
494 {
495 	struct inode inode, *ip = &inode;
496 	char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])];
497 	char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */
498 	char *name;
499 	mode_t type;
500 
501 	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
502 
503 	/*
504 	 * XXX need to to locking state.
505 	 */
506 
507 	(void)getflags(ufs_flags, flags, ip->i_flag);
508 	PRWORD(ovflw, " %*d", 7, 1, ip->i_number);
509 	PRWORD(ovflw, " %*s", 6, 1, flags);
510 	type = ip->i_ffs_mode & S_IFMT;
511 	if (S_ISCHR(ip->i_ffs_mode) || S_ISBLK(ip->i_ffs_mode)) {
512 		if (usenumflag ||
513 		    (name = devname(ip->i_ffs_rdev, type)) == NULL) {
514 			snprintf(dev, sizeof(dev), "%d,%d",
515 			    major(ip->i_ffs_rdev), minor(ip->i_ffs_rdev));
516 			name = dev;
517 		}
518 		PRWORD(ovflw, " %*s", 8, 1, name);
519 	} else
520 		PRWORD(ovflw, " %*lld", 8, 1, (long long)ip->i_ffs_size);
521 	return (0);
522 }
523 
524 int
525 ext2fs_print(vp, ovflw)
526 	struct vnode *vp;
527 	int ovflw;
528 {
529 	struct inode inode, *ip = &inode;
530 	char flags[sizeof(ufs_flags) / sizeof(ufs_flags[0])];
531 	char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */
532 	char *name;
533 	mode_t type;
534 
535 	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
536 
537 	/*
538 	 * XXX need to to locking state.
539 	 */
540 
541 	(void)getflags(ufs_flags, flags, ip->i_flag);
542 	PRWORD(ovflw, " %*d", 7, 1, ip->i_number);
543 	PRWORD(ovflw, " %*s", 6, 1, flags);
544 	type = ip->i_e2fs_mode & S_IFMT;
545 	if (S_ISCHR(ip->i_e2fs_mode) || S_ISBLK(ip->i_e2fs_mode)) {
546 		if (usenumflag ||
547 		    (name = devname(ip->i_e2fs_rdev, type)) == NULL) {
548 			snprintf(dev, sizeof(dev), "%d,%d",
549 			    major(ip->i_e2fs_rdev), minor(ip->i_e2fs_rdev));
550 			name = dev;
551 		}
552 		PRWORD(ovflw, " %*s", 8, 1, name);
553 	} else
554 		PRWORD(ovflw, " %*u", 8, 1, (u_int)ip->i_e2fs_size);
555 	return (0);
556 }
557 
558 const struct flagbit_desc nfs_flags[] = {
559 	{ NFLUSHWANT,	'W' },
560 	{ NFLUSHINPROG,	'P' },
561 	{ NMODIFIED,	'M' },
562 	{ NWRITEERR,	'E' },
563 	{ NQNFSNONCACHE, 'X' },
564 	{ NQNFSWRITE,	'O' },
565 	{ NQNFSEVICTED,	'G' },
566 	{ NACC,		'A' },
567 	{ NUPD,		'U' },
568 	{ NCHG,		'C' },
569 	{ 0,		'\0' },
570 };
571 
572 void
573 nfs_header()
574 {
575 
576 	(void)printf(" FILEID NFLAG RDEV|SZ");
577 }
578 
579 int
580 nfs_print(vp, ovflw)
581 	struct vnode *vp;
582 	int ovflw;
583 {
584 	struct nfsnode nfsnode, *np = &nfsnode;
585 	char flags[sizeof(nfs_flags) / sizeof(nfs_flags[0])];
586 	char dev[4 + 1 + 7 + 1]; /* 12bit marjor + 20bit minor */
587 	struct vattr va;
588 	char *name;
589 	mode_t type;
590 
591 	KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode");
592 	(void)getflags(nfs_flags, flags, np->n_flag);
593 
594 	KGETRET(np->n_vattr, &va, sizeof(va), "vnode attr");
595 	PRWORD(ovflw, " %*ld", 7, 1, (long)va.va_fileid);
596 	PRWORD(ovflw, " %*s", 6, 1, flags);
597 	switch (va.va_type) {
598 	case VCHR:
599 		type = S_IFCHR;
600 		goto device;
601 
602 	case VBLK:
603 		type = S_IFBLK;
604 	device:
605 		if (usenumflag || (name = devname(va.va_rdev, type)) == NULL) {
606 			(void)snprintf(dev, sizeof(dev), "%d,%d",
607 			    major(va.va_rdev), minor(va.va_rdev));
608 			name = dev;
609 		}
610 		PRWORD(ovflw, " %*s", 8, 1, name);
611 		break;
612 	default:
613 		PRWORD(ovflw, " %*lld", 8, 1, (long long)np->n_size);
614 		break;
615 	}
616 	return (0);
617 }
618 
619 void
620 layer_header()
621 {
622 
623 	(void)printf(" %*s", PTRSTRWIDTH, "LOWER");
624 }
625 
626 int
627 layer_print(vp, ovflw)
628 	struct vnode *vp;
629 	int ovflw;
630 {
631 	struct layer_node lnode, *lp = &lnode;
632 
633 	KGETRET(VTOLAYER(vp), &lnode, sizeof(lnode), "layer vnode");
634 
635 	PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)lp->layer_lowervp);
636 	return (0);
637 }
638 
639 void
640 union_header()
641 {
642 
643 	(void)printf(" %*s %*s", PTRSTRWIDTH, "UPPER", PTRSTRWIDTH, "LOWER");
644 }
645 
646 int
647 union_print(vp, ovflw)
648 	struct vnode *vp;
649 	int ovflw;
650 {
651 	struct union_node unode, *up = &unode;
652 
653 	KGETRET(VTOUNION(vp), &unode, sizeof(unode), "vnode's unode");
654 
655 	PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)up->un_uppervp);
656 	PRWORD(ovflw, " %*lx", PTRSTRWIDTH + 1, 1, (long)up->un_lowervp);
657 	return (0);
658 }
659 
660 /*
661  * Given a pointer to a mount structure in kernel space,
662  * read it in and return a usable pointer to it.
663  */
664 struct mount *
665 getmnt(maddr)
666 	struct mount *maddr;
667 {
668 	static struct mtab {
669 		struct mtab *next;
670 		struct mount *maddr;
671 		struct mount mount;
672 	} *mhead = NULL;
673 	struct mtab *mt;
674 
675 	for (mt = mhead; mt != NULL; mt = mt->next)
676 		if (maddr == mt->maddr)
677 			return (&mt->mount);
678 	if ((mt = malloc(sizeof(struct mtab))) == NULL)
679 		err(1, "malloc");
680 	KGETRET(maddr, &mt->mount, sizeof(struct mount), "mount table");
681 	mt->maddr = maddr;
682 	mt->next = mhead;
683 	mhead = mt;
684 	return (&mt->mount);
685 }
686 
687 void
688 mount_print(mp)
689 	struct mount *mp;
690 {
691 	int flags;
692 
693 	(void)printf("*** MOUNT %s %s on %s", ST.f_fstypename,
694 	    ST.f_mntfromname, ST.f_mntonname);
695 	if ((flags = mp->mnt_flag) != 0) {
696 		int i;
697 		const char *sep = " (";
698 
699 		for (i = 0; mnt_flags[i].m_flag; i++) {
700 			if (flags & mnt_flags[i].m_flag) {
701 				(void)printf("%s%s", sep, mnt_flags[i].m_name);
702 				flags &= ~mnt_flags[i].m_flag;
703 				sep = ",";
704 			}
705 		}
706 		if (flags)
707 			(void)printf("%sunknown_flags:%x", sep, flags);
708 		(void)printf(")");
709 	}
710 	(void)printf("\n");
711 }
712 
713 char *
714 loadvnodes(avnodes)
715 	int *avnodes;
716 {
717 	int mib[2];
718 	size_t copysize;
719 	char *vnodebase;
720 
721 	if (memf != NULL) {
722 		/*
723 		 * do it by hand
724 		 */
725 		return (kinfo_vnodes(avnodes));
726 	}
727 	mib[0] = CTL_KERN;
728 	mib[1] = KERN_VNODE;
729 	if (sysctl(mib, 2, NULL, &copysize, NULL, 0) == -1)
730 		err(1, "sysctl: KERN_VNODE");
731 	if ((vnodebase = malloc(copysize)) == NULL)
732 		err(1, "malloc");
733 	if (sysctl(mib, 2, vnodebase, &copysize, NULL, 0) == -1)
734 		err(1, "sysctl: KERN_VNODE");
735 	if (copysize % (VPTRSZ + VNODESZ))
736 		errx(1, "vnode size mismatch");
737 	*avnodes = copysize / (VPTRSZ + VNODESZ);
738 
739 	return (vnodebase);
740 }
741 
742 /*
743  * simulate what a running kernel does in in kinfo_vnode
744  */
745 char *
746 kinfo_vnodes(avnodes)
747 	int *avnodes;
748 {
749 	struct mntlist mountlist;
750 	struct mount *mp, mount;
751 	struct vnode *vp, vnode;
752 	char *beg, *bp, *ep;
753 	int numvnodes;
754 
755 	KGET(V_NUMV, numvnodes);
756 	if ((bp = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL)
757 		err(1, "malloc");
758 	beg = bp;
759 	ep = bp + (numvnodes + 20) * (VPTRSZ + VNODESZ);
760 	KGET(V_MOUNTLIST, mountlist);
761 	for (mp = mountlist.cqh_first;;
762 	    mp = mount.mnt_list.cqe_next) {
763 		KGET2(mp, &mount, sizeof(mount), "mount entry");
764 		for (vp = mount.mnt_vnodelist.lh_first;
765 		    vp != NULL; vp = vnode.v_mntvnodes.le_next) {
766 			KGET2(vp, &vnode, sizeof(vnode), "vnode");
767 			if (bp + VPTRSZ + VNODESZ > ep)
768 				/* XXX - should realloc */
769 				errx(1, "no more room for vnodes");
770 			memmove(bp, &vp, VPTRSZ);
771 			bp += VPTRSZ;
772 			memmove(bp, &vnode, VNODESZ);
773 			bp += VNODESZ;
774 		}
775 		if (mp == mountlist.cqh_last)
776 			break;
777 	}
778 	*avnodes = (bp - beg) / (VPTRSZ + VNODESZ);
779 	return (beg);
780 }
781 
782 void
783 ttymode()
784 {
785 	int ntty;
786 	struct ttylist_head tty_head;
787 	struct tty *tp, tty;
788 
789 	KGET(TTY_NTTY, ntty);
790 	(void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s");
791 	KGET(TTY_TTYLIST, tty_head);
792 	(void)printf(
793 	    "  LINE RAW CAN OUT  HWT LWT     COL STATE  %-*s  PGID DISC\n",
794 	    PTRSTRWIDTH, "SESS");
795 	for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) {
796 		KGET2(tp, &tty, sizeof tty, "tty struct");
797 		ttyprt(&tty);
798 	}
799 }
800 
801 static const struct flagbit_desc ttystates[] = {
802 	{ TS_ISOPEN,	'O'},
803 	{ TS_DIALOUT,	'>'},
804 	{ TS_CARR_ON,	'C'},
805 	{ TS_TIMEOUT,	'T'},
806 	{ TS_FLUSH,	'F'},
807 	{ TS_BUSY,	'B'},
808 	{ TS_ASLEEP,	'A'},
809 	{ TS_XCLUDE,	'X'},
810 	{ TS_TTSTOP,	'S'},
811 	{ TS_TBLOCK,	'K'},
812 	{ TS_ASYNC,	'Y'},
813 	{ TS_BKSL,	'D'},
814 	{ TS_ERASE,	'E'},
815 	{ TS_LNCH,	'L'},
816 	{ TS_TYPEN,	'P'},
817 	{ TS_CNTTB,	'N'},
818 	{ 0,		'\0'},
819 };
820 
821 void
822 ttyprt(tp)
823 	struct tty *tp;
824 {
825 	char state[sizeof(ttystates) / sizeof(ttystates[0]) + 1];
826 	char dev[2 + 3 + 1 + 5 + 1]; /* 12bit major + 20bit minor */
827 	struct linesw t_linesw;
828 	char *name, buffer;
829 	pid_t pgid;
830 	int n, ovflw;
831 
832 	if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL) {
833 		(void)snprintf(dev, sizeof(dev), "0x%3x:%x",
834 		    major(tp->t_dev), minor(tp->t_dev));
835 		name = dev;
836 	}
837 	ovflw = 0;
838 	PRWORD(ovflw, "%-*s", 7, 0, name);
839 	PRWORD(ovflw, " %*d", 3, 1, tp->t_rawq.c_cc);
840 	PRWORD(ovflw, " %*d", 4, 1, tp->t_canq.c_cc);
841 	PRWORD(ovflw, " %*d", 4, 1, tp->t_outq.c_cc);
842 	PRWORD(ovflw, " %*d", 5, 1, tp->t_hiwat);
843 	PRWORD(ovflw, " %*d", 4, 1, tp->t_lowat);
844 	PRWORD(ovflw, " %*d", 8, 1, tp->t_column);
845 	n = getflags(ttystates, state, tp->t_state);
846 	if (tp->t_wopen) {
847 		state[n++] = 'W';
848 		state[n] = '\0';
849 	}
850 	PRWORD(ovflw, " %-*s", 7, 1, state);
851 	PRWORD(ovflw, " %*lX", PTRSTRWIDTH + 1, 1, (u_long)tp->t_session);
852 	pgid = 0;
853 	if (tp->t_pgrp != NULL)
854 		KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid");
855 	PRWORD(ovflw, " %*d", 6, 1, pgid);
856 	KGET2(tp->t_linesw, &t_linesw, sizeof(t_linesw),
857 	    "line discipline switch table");
858 	name = t_linesw.l_name;
859 	(void)putchar(' ');
860 	for (;;) {
861 		KGET2(name, &buffer, sizeof(buffer), "line discipline name");
862 		if (buffer == '\0')
863 			break;
864 		(void)putchar(buffer);
865 		name++;
866 	}
867 	(void)putchar('\n');
868 }
869 
870 static const struct flagbit_desc filemode_flags[] = {
871 	{ FREAD,	'R' },
872 	{ FWRITE,	'W' },
873 	{ FAPPEND,	'A' },
874 #ifdef FSHLOCK	/* currently gone */
875 	{ FSHLOCK,	'S' },
876 	{ FEXLOCK,	'X' },
877 #endif
878 	{ FASYNC,	'I' },
879 	{ 0,		'\0' },
880 };
881 
882 void
883 filemode()
884 {
885 	struct file *fp;
886 	struct file *addr;
887 	char flags[sizeof(filemode_flags) / sizeof(filemode_flags[0])];
888 	char *buf;
889 	int len, maxfile, nfile, ovflw;
890 	static const char * const dtypes[] =
891 		{ "???", "inode", "socket", "pipe" };
892 
893 	KGET(FNL_MAXFILE, maxfile);
894 	if (totalflag) {
895 		KGET(FNL_NFILE, nfile);
896 		(void)printf("%3d/%3d files\n", nfile, maxfile);
897 		return;
898 	}
899 	if (getfiles(&buf, &len) == -1)
900 		return;
901 	/*
902 	 * Getfiles returns in malloc'd memory a pointer to the first file
903 	 * structure, and then an array of file structs (whose addresses are
904 	 * derivable from the previous entry).
905 	 */
906 	addr = ((struct filelist *)buf)->lh_first;
907 	fp = (struct file *)(buf + sizeof(struct filelist));
908 	nfile = (len - sizeof(struct filelist)) / sizeof(struct file);
909 
910 	(void)printf("%d/%d open files\n", nfile, maxfile);
911 	(void)printf("%*s%s%*s TYPE    FLG     CNT  MSG  %*s%s%*s  OFFSET\n",
912 	    (PTRSTRWIDTH - 4) / 2, "", " LOC", (PTRSTRWIDTH - 4) / 2, "",
913 	    (PTRSTRWIDTH - 4) / 2, "", "DATA", (PTRSTRWIDTH - 4) / 2, "");
914 	for (; (char *)fp < buf + len; addr = fp->f_list.le_next, fp++) {
915 		if ((unsigned)fp->f_type > DTYPE_PIPE)
916 			continue;
917 		ovflw = 0;
918 		(void)getflags(filemode_flags, flags, fp->f_flag);
919 		PRWORD(ovflw, "%*lx", PTRSTRWIDTH, 0, (long)addr);
920 		PRWORD(ovflw, " %-*s", 9, 1, dtypes[fp->f_type]);
921 		PRWORD(ovflw, " %*s", 6, 1, flags);
922 		PRWORD(ovflw, " %*d", 5, 1, fp->f_count);
923 		PRWORD(ovflw, " %*d", 5, 1, fp->f_msgcount);
924 		PRWORD(ovflw, "  %*lx", PTRSTRWIDTH + 1, 2, (long)fp->f_data);
925 		if (fp->f_offset < 0)
926 			PRWORD(ovflw, "  %-*llx\n", PTRSTRWIDTH + 1, 2,
927 			    (long long)fp->f_offset);
928 		else
929 			PRWORD(ovflw, "  %-*lld\n", PTRSTRWIDTH + 1, 2,
930 			    (long long)fp->f_offset);
931 	}
932 	free(buf);
933 }
934 
935 int
936 getfiles(abuf, alen)
937 	char **abuf;
938 	int *alen;
939 {
940 	size_t len;
941 	int mib[2];
942 	char *buf;
943 
944 	/*
945 	 * XXX
946 	 * Add emulation of KINFO_FILE here.
947 	 */
948 	if (memf != NULL)
949 		errx(1, "files on dead kernel, not implemented");
950 
951 	mib[0] = CTL_KERN;
952 	mib[1] = KERN_FILE;
953 	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) {
954 		warn("sysctl: KERN_FILE");
955 		return (-1);
956 	}
957 	if ((buf = malloc(len)) == NULL)
958 		err(1, "malloc");
959 	if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) {
960 		warn("sysctl: KERN_FILE");
961 		return (-1);
962 	}
963 	*abuf = buf;
964 	*alen = len;
965 	return (0);
966 }
967 
968 void
969 usage()
970 {
971 
972 	(void)fprintf(stderr,
973 	    "usage: %s [-T|-f|-s|-t|-v] [-kn] [-M core] [-N system]\n",
974 	    getprogname());
975 	exit(1);
976 }
977