pstat.c revision 1.8 
1/*	$OpenBSD: pstat.c,v 1.8 1997/05/30 13:28:38 downsj Exp $	*/
2/*	$NetBSD: pstat.c,v 1.27 1996/10/23 22:50:06 cgd Exp $	*/
3
4/*-
5 * Copyright (c) 1980, 1991, 1993
6 *	The Regents of the University of California.  All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 *    must display the following acknowledgement:
18 *	This product includes software developed by the University of
19 *	California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 *    may be used to endorse or promote products derived from this software
22 *    without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 */
36
37#ifndef lint
38static char copyright[] =
39"@(#) Copyright (c) 1980, 1991, 1993\n\
40	The Regents of the University of California.  All rights reserved.\n";
41#endif /* not lint */
42
43#ifndef lint
44#if 0
45from: static char sccsid[] = "@(#)pstat.c	8.9 (Berkeley) 2/16/94";
46#else
47static char *rcsid = "$OpenBSD: pstat.c,v 1.8 1997/05/30 13:28:38 downsj Exp $";
48#endif
49#endif /* not lint */
50
51#include <sys/param.h>
52#include <sys/time.h>
53#include <sys/vnode.h>
54#include <sys/map.h>
55#include <sys/ucred.h>
56#define _KERNEL
57#include <sys/file.h>
58#include <ufs/ufs/quota.h>
59#include <ufs/ufs/inode.h>
60#define NFS
61#include <sys/mount.h>
62#undef NFS
63#undef _KERNEL
64#include <sys/stat.h>
65#include <nfs/nfsproto.h>
66#include <nfs/rpcv2.h>
67#include <nfs/nfsnode.h>
68#include <sys/ioctl.h>
69#include <sys/tty.h>
70#include <sys/conf.h>
71#include <sys/device.h>
72
73#include <sys/sysctl.h>
74
75#include <err.h>
76#include <kvm.h>
77#include <limits.h>
78#include <nlist.h>
79#include <stdio.h>
80#include <stdlib.h>
81#include <string.h>
82#include <unistd.h>
83
84struct nlist nl[] = {
85#define VM_SWAPMAP	0
86	{ "_swapmap" },	/* list of free swap areas */
87#define VM_NSWAPMAP	1
88	{ "_nswapmap" },/* size of the swap map */
89#define VM_SWDEVT	2
90	{ "_swdevt" },	/* list of swap devices and sizes */
91#define VM_NSWAP	3
92	{ "_nswap" },	/* size of largest swap device */
93#define VM_NSWDEV	4
94	{ "_nswdev" },	/* number of swap devices */
95#define VM_DMMAX	5
96	{ "_dmmax" },	/* maximum size of a swap block */
97#define	V_MOUNTLIST	6
98	{ "_mountlist" },	/* address of head of mount list. */
99#define V_NUMV		7
100	{ "_numvnodes" },
101#define	FNL_NFILE	8
102	{"_nfiles"},
103#define FNL_MAXFILE	9
104	{"_maxfiles"},
105#define TTY_NTTY	10
106	{"_tty_count"},
107#define TTY_TTYLIST	11
108	{"_ttylist"},
109#define NLMANDATORY TTY_TTYLIST	/* names up to here are mandatory */
110#define VM_NISWAP	NLMANDATORY + 1
111	{ "_niswap" },
112#define VM_NISWDEV	NLMANDATORY + 2
113	{ "_niswdev" },
114	{ "" }
115};
116
117int	usenumflag;
118int	totalflag;
119int	kflag;
120char	*nlistf	= NULL;
121char	*memf	= NULL;
122kvm_t	*kd;
123
124#define	SVAR(var) __STRING(var)	/* to force expansion */
125#define	KGET(idx, var)							\
126	KGET1(idx, &var, sizeof(var), SVAR(var))
127#define	KGET1(idx, p, s, msg)						\
128	KGET2(nl[idx].n_value, p, s, msg)
129#define	KGET2(addr, p, s, msg)						\
130	if (kvm_read(kd, (u_long)(addr), p, s) != s)			\
131		warnx("cannot read %s: %s", msg, kvm_geterr(kd))
132#define	KGETRET(addr, p, s, msg)					\
133	if (kvm_read(kd, (u_long)(addr), p, s) != s) {			\
134		warnx("cannot read %s: %s", msg, kvm_geterr(kd));	\
135		return (0);						\
136	}
137
138void	filemode __P((void));
139int	getfiles __P((char **, int *));
140struct mount *
141	getmnt __P((struct mount *));
142struct e_vnode *
143	kinfo_vnodes __P((int *));
144struct e_vnode *
145	loadvnodes __P((int *));
146void	mount_print __P((struct mount *));
147void	nfs_header __P((void));
148int	nfs_print __P((struct vnode *));
149void	swapmode __P((void));
150void	ttymode __P((void));
151void	ttyprt __P((struct tty *));
152void	ufs_header __P((void));
153int	ufs_print __P((struct vnode *));
154void	usage __P((void));
155void	vnode_header __P((void));
156void	vnode_print __P((struct vnode *, struct vnode *));
157void	vnodemode __P((void));
158
159int
160main(argc, argv)
161	int argc;
162	char *argv[];
163{
164	extern char *optarg;
165	extern int optind;
166	int ch, i, quit, ret;
167	int fileflag, swapflag, ttyflag, vnodeflag;
168	char buf[_POSIX2_LINE_MAX];
169
170	fileflag = swapflag = ttyflag = vnodeflag = 0;
171	while ((ch = getopt(argc, argv, "TM:N:fiknstv")) != -1)
172		switch (ch) {
173		case 'f':
174			fileflag = 1;
175			break;
176		case 'M':
177			memf = optarg;
178			break;
179		case 'N':
180			nlistf = optarg;
181			break;
182		case 'n':
183			usenumflag = 1;
184			break;
185		case 's':
186			swapflag = 1;
187			break;
188		case 'T':
189			totalflag = 1;
190			break;
191		case 't':
192			ttyflag = 1;
193			break;
194		case 'k':
195			kflag = 1;
196			break;
197		case 'v':
198		case 'i':		/* Backward compatibility. */
199			vnodeflag = 1;
200			break;
201		default:
202			usage();
203		}
204	argc -= optind;
205	argv += optind;
206
207	/*
208	 * Discard setgid privileges if not the running kernel so that bad
209	 * guys can't print interesting stuff from kernel memory.
210	 */
211	if (nlistf != NULL || memf != NULL) {
212		(void)setegid(getgid());
213		(void)setgid(getgid());
214	}
215
216	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0)
217		errx(1, "kvm_openfiles: %s", buf);
218	if ((ret = kvm_nlist(kd, nl)) != 0) {
219		if (ret == -1)
220			errx(1, "kvm_nlist: %s", kvm_geterr(kd));
221		for (i = quit = 0; i <= NLMANDATORY; i++)
222			if (!nl[i].n_value) {
223				quit = 1;
224				warnx("undefined symbol: %s", nl[i].n_name);
225			}
226		if (quit)
227			exit(1);
228	}
229	if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag))
230		usage();
231	if (fileflag || totalflag)
232		filemode();
233	if (vnodeflag || totalflag)
234		vnodemode();
235	if (ttyflag)
236		ttymode();
237	if (swapflag || totalflag)
238		swapmode();
239	exit (0);
240}
241
242struct e_vnode {
243	struct vnode *avnode;
244	struct vnode vnode;
245};
246
247void
248vnodemode()
249{
250	register struct e_vnode *e_vnodebase, *endvnode, *evp;
251	register struct vnode *vp;
252	register struct mount *maddr, *mp;
253	int numvnodes;
254
255	e_vnodebase = loadvnodes(&numvnodes);
256	if (totalflag) {
257		(void)printf("%7d vnodes\n", numvnodes);
258		return;
259	}
260	endvnode = e_vnodebase + numvnodes;
261	(void)printf("%d active vnodes\n", numvnodes);
262
263
264#define ST	mp->mnt_stat
265	maddr = NULL;
266	for (evp = e_vnodebase; evp < endvnode; evp++) {
267		vp = &evp->vnode;
268		if (vp->v_mount != maddr) {
269			/*
270			 * New filesystem
271			 */
272			if ((mp = getmnt(vp->v_mount)) == NULL)
273				continue;
274			maddr = vp->v_mount;
275			mount_print(mp);
276			vnode_header();
277			if (!strncmp(ST.f_fstypename, MOUNT_FFS, MFSNAMELEN) ||
278			    !strncmp(ST.f_fstypename, MOUNT_MFS, MFSNAMELEN)) {
279				ufs_header();
280			} else if (!strncmp(ST.f_fstypename, MOUNT_NFS,
281			    MFSNAMELEN)) {
282				nfs_header();
283			}
284			(void)printf("\n");
285		}
286		vnode_print(evp->avnode, vp);
287		if (!strncmp(ST.f_fstypename, MOUNT_FFS, MFSNAMELEN) ||
288		    !strncmp(ST.f_fstypename, MOUNT_MFS, MFSNAMELEN)) {
289			ufs_print(vp);
290		} else if (!strncmp(ST.f_fstypename, MOUNT_NFS, MFSNAMELEN)) {
291			nfs_print(vp);
292		}
293		(void)printf("\n");
294	}
295	free(e_vnodebase);
296}
297
298void
299vnode_header()
300{
301	(void)printf("ADDR     TYP VFLAG  USE HOLD");
302}
303
304void
305vnode_print(avnode, vp)
306	struct vnode *avnode;
307	struct vnode *vp;
308{
309	char *type, flags[16];
310	char *fp = flags;
311	register int flag;
312
313	/*
314	 * set type
315	 */
316	switch(vp->v_type) {
317	case VNON:
318		type = "non"; break;
319	case VREG:
320		type = "reg"; break;
321	case VDIR:
322		type = "dir"; break;
323	case VBLK:
324		type = "blk"; break;
325	case VCHR:
326		type = "chr"; break;
327	case VLNK:
328		type = "lnk"; break;
329	case VSOCK:
330		type = "soc"; break;
331	case VFIFO:
332		type = "fif"; break;
333	case VBAD:
334		type = "bad"; break;
335	default:
336		type = "unk"; break;
337	}
338	/*
339	 * gather flags
340	 */
341	flag = vp->v_flag;
342	if (flag & VROOT)
343		*fp++ = 'R';
344	if (flag & VTEXT)
345		*fp++ = 'T';
346	if (flag & VSYSTEM)
347		*fp++ = 'S';
348	if (flag & VISTTY)
349		*fp++ = 'I';
350	if (flag & VXLOCK)
351		*fp++ = 'L';
352	if (flag & VXWANT)
353		*fp++ = 'W';
354	if (flag & VBWAIT)
355		*fp++ = 'B';
356	if (flag & VALIASED)
357		*fp++ = 'A';
358	if (flag == 0)
359		*fp++ = '-';
360	*fp = '\0';
361	(void)printf("%8x %s %5s %4d %4d",
362	    avnode, type, flags, vp->v_usecount, vp->v_holdcnt);
363}
364
365void
366ufs_header()
367{
368	(void)printf(" FILEID IFLAG RDEV|SZ");
369}
370
371int
372ufs_print(vp)
373	struct vnode *vp;
374{
375	register int flag;
376	struct inode inode, *ip = &inode;
377	char flagbuf[16], *flags = flagbuf;
378	char *name;
379	mode_t type;
380
381	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
382	flag = ip->i_flag;
383	if (flag & IN_LOCKED)
384		*flags++ = 'L';
385	if (flag & IN_WANTED)
386		*flags++ = 'W';
387	if (flag & IN_RENAME)
388		*flags++ = 'R';
389	if (flag & IN_UPDATE)
390		*flags++ = 'U';
391	if (flag & IN_ACCESS)
392		*flags++ = 'A';
393	if (flag & IN_CHANGE)
394		*flags++ = 'C';
395	if (flag & IN_MODIFIED)
396		*flags++ = 'M';
397	if (flag & IN_SHLOCK)
398		*flags++ = 'S';
399	if (flag & IN_EXLOCK)
400		*flags++ = 'E';
401	if (flag & IN_LWAIT)
402		*flags++ = 'Z';
403	if (flag == 0)
404		*flags++ = '-';
405	*flags = '\0';
406
407	(void)printf(" %6d %5s", ip->i_number, flagbuf);
408	type = ip->i_ffs_mode & S_IFMT;
409	if (S_ISCHR(ip->i_ffs_mode) || S_ISBLK(ip->i_ffs_mode))
410		if (usenumflag ||
411		    ((name = devname(ip->i_ffs_rdev, type)) == NULL))
412			(void)printf("   %2d,%-2d",
413			    major(ip->i_ffs_rdev), minor(ip->i_ffs_rdev));
414		else
415			(void)printf(" %7s", name);
416	else
417		(void)printf(" %7qd", ip->i_ffs_size);
418	return (0);
419}
420
421void
422nfs_header()
423{
424	(void)printf(" FILEID NFLAG RDEV|SZ");
425}
426
427int
428nfs_print(vp)
429	struct vnode *vp;
430{
431	struct nfsnode nfsnode, *np = &nfsnode;
432	char flagbuf[16], *flags = flagbuf;
433	register int flag;
434	char *name;
435	mode_t type;
436
437	KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode");
438	flag = np->n_flag;
439	if (flag & NFLUSHWANT)
440		*flags++ = 'W';
441	if (flag & NFLUSHINPROG)
442		*flags++ = 'P';
443	if (flag & NMODIFIED)
444		*flags++ = 'M';
445	if (flag & NWRITEERR)
446		*flags++ = 'E';
447	if (flag & NQNFSNONCACHE)
448		*flags++ = 'X';
449	if (flag & NQNFSWRITE)
450		*flags++ = 'O';
451	if (flag & NQNFSEVICTED)
452		*flags++ = 'G';
453	if (flag == 0)
454		*flags++ = '-';
455	*flags = '\0';
456
457#define VT	np->n_vattr
458	(void)printf(" %6d %5s", VT.va_fileid, flagbuf);
459	type = VT.va_mode & S_IFMT;
460	if (S_ISCHR(VT.va_mode) || S_ISBLK(VT.va_mode))
461		if (usenumflag || ((name = devname(VT.va_rdev, type)) == NULL))
462			(void)printf("   %2d,%-2d",
463			    major(VT.va_rdev), minor(VT.va_rdev));
464		else
465			(void)printf(" %7s", name);
466	else
467		(void)printf(" %7qd", np->n_size);
468	return (0);
469}
470
471/*
472 * Given a pointer to a mount structure in kernel space,
473 * read it in and return a usable pointer to it.
474 */
475struct mount *
476getmnt(maddr)
477	struct mount *maddr;
478{
479	static struct mtab {
480		struct mtab *next;
481		struct mount *maddr;
482		struct mount mount;
483	} *mhead = NULL;
484	register struct mtab *mt;
485
486	for (mt = mhead; mt != NULL; mt = mt->next)
487		if (maddr == mt->maddr)
488			return (&mt->mount);
489	if ((mt = malloc(sizeof(struct mtab))) == NULL)
490		err(1, NULL);
491	KGETRET(maddr, &mt->mount, sizeof(struct mount), "mount table");
492	mt->maddr = maddr;
493	mt->next = mhead;
494	mhead = mt;
495	return (&mt->mount);
496}
497
498void
499mount_print(mp)
500	struct mount *mp;
501{
502	register int flags;
503	char *type;
504
505#define ST	mp->mnt_stat
506	(void)printf("*** MOUNT ");
507	(void)printf("%.*s %s on %s", MFSNAMELEN, ST.f_fstypename,
508	    ST.f_mntfromname, ST.f_mntonname);
509	if (flags = mp->mnt_flag) {
510		char *comma = "(";
511
512		putchar(' ');
513		/* user visable flags */
514		if (flags & MNT_RDONLY) {
515			(void)printf("%srdonly", comma);
516			flags &= ~MNT_RDONLY;
517			comma = ",";
518		}
519		if (flags & MNT_SYNCHRONOUS) {
520			(void)printf("%ssynchronous", comma);
521			flags &= ~MNT_SYNCHRONOUS;
522			comma = ",";
523		}
524		if (flags & MNT_NOEXEC) {
525			(void)printf("%snoexec", comma);
526			flags &= ~MNT_NOEXEC;
527			comma = ",";
528		}
529		if (flags & MNT_NOSUID) {
530			(void)printf("%snosuid", comma);
531			flags &= ~MNT_NOSUID;
532			comma = ",";
533		}
534		if (flags & MNT_NODEV) {
535			(void)printf("%snodev", comma);
536			flags &= ~MNT_NODEV;
537			comma = ",";
538		}
539		if (flags & MNT_UNION) {
540			(void)printf("%sunion", comma);
541			flags &= ~MNT_UNION;
542			comma = ",";
543		}
544		if (flags & MNT_ASYNC) {
545			(void)printf("%sasync", comma);
546			flags &= ~MNT_ASYNC;
547			comma = ",";
548		}
549		if (flags & MNT_EXRDONLY) {
550			(void)printf("%sexrdonly", comma);
551			flags &= ~MNT_EXRDONLY;
552			comma = ",";
553		}
554		if (flags & MNT_EXPORTED) {
555			(void)printf("%sexport", comma);
556			flags &= ~MNT_EXPORTED;
557			comma = ",";
558		}
559		if (flags & MNT_DEFEXPORTED) {
560			(void)printf("%sdefdexported", comma);
561			flags &= ~MNT_DEFEXPORTED;
562			comma = ",";
563		}
564		if (flags & MNT_EXPORTANON) {
565			(void)printf("%sexportanon", comma);
566			flags &= ~MNT_EXPORTANON;
567			comma = ",";
568		}
569		if (flags & MNT_EXKERB) {
570			(void)printf("%sexkerb", comma);
571			flags &= ~MNT_EXKERB;
572			comma = ",";
573		}
574		if (flags & MNT_LOCAL) {
575			(void)printf("%slocal", comma);
576			flags &= ~MNT_LOCAL;
577			comma = ",";
578		}
579		if (flags & MNT_QUOTA) {
580			(void)printf("%squota", comma);
581			flags &= ~MNT_QUOTA;
582			comma = ",";
583		}
584		if (flags & MNT_ROOTFS) {
585			(void)printf("%srootfs", comma);
586			flags &= ~MNT_ROOTFS;
587			comma = ",";
588		}
589		/* filesystem control flags */
590		if (flags & MNT_UPDATE) {
591			(void)printf("%supdate", comma);
592			flags &= ~MNT_UPDATE;
593			comma = ",";
594		}
595		if (flags & MNT_MLOCK) {
596			(void)printf("%slock", comma);
597			flags &= ~MNT_MLOCK;
598			comma = ",";
599		}
600		if (flags & MNT_MWAIT) {
601			(void)printf("%swait", comma);
602			flags &= ~MNT_MWAIT;
603			comma = ",";
604		}
605		if (flags & MNT_MPBUSY) {
606			(void)printf("%sbusy", comma);
607			flags &= ~MNT_MPBUSY;
608			comma = ",";
609		}
610		if (flags & MNT_MPWANT) {
611			(void)printf("%swant", comma);
612			flags &= ~MNT_MPWANT;
613			comma = ",";
614		}
615		if (flags & MNT_UNMOUNT) {
616			(void)printf("%sunmount", comma);
617			flags &= ~MNT_UNMOUNT;
618			comma = ",";
619		}
620		if (flags)
621			(void)printf("%sunknown_flags:%x", comma, flags);
622		(void)printf(")");
623	}
624	(void)printf("\n");
625#undef ST
626}
627
628struct e_vnode *
629loadvnodes(avnodes)
630	int *avnodes;
631{
632	int mib[2];
633	size_t copysize;
634	struct e_vnode *vnodebase;
635
636	if (memf != NULL) {
637		/*
638		 * do it by hand
639		 */
640		return (kinfo_vnodes(avnodes));
641	}
642	mib[0] = CTL_KERN;
643	mib[1] = KERN_VNODE;
644	if (sysctl(mib, 2, NULL, &copysize, NULL, 0) == -1)
645		err(1, "sysctl: KERN_VNODE");
646	if ((vnodebase = malloc(copysize)) == NULL)
647		err(1, NULL);
648	if (sysctl(mib, 2, vnodebase, &copysize, NULL, 0) == -1)
649		err(1, "sysctl: KERN_VNODE");
650	if (copysize % sizeof(struct e_vnode))
651		errx(1, "vnode size mismatch");
652	*avnodes = copysize / sizeof(struct e_vnode);
653
654	return (vnodebase);
655}
656
657/*
658 * simulate what a running kernel does in in kinfo_vnode
659 */
660struct e_vnode *
661kinfo_vnodes(avnodes)
662	int *avnodes;
663{
664	struct mntlist mountlist;
665	struct mount *mp, mount;
666	struct vnode *vp, vnode;
667	char *vbuf, *evbuf, *bp;
668	int num, numvnodes;
669
670#define VPTRSZ  sizeof(struct vnode *)
671#define VNODESZ sizeof(struct vnode)
672
673	KGET(V_NUMV, numvnodes);
674	if ((vbuf = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL)
675		err(1, NULL);
676	bp = vbuf;
677	evbuf = vbuf + (numvnodes + 20) * (VPTRSZ + VNODESZ);
678	KGET(V_MOUNTLIST, mountlist);
679	for (num = 0, mp = mountlist.cqh_first; ; mp = mount.mnt_list.cqe_next) {
680		KGET2(mp, &mount, sizeof(mount), "mount entry");
681		for (vp = mount.mnt_vnodelist.lh_first;
682		    vp != NULL; vp = vnode.v_mntvnodes.le_next) {
683			KGET2(vp, &vnode, sizeof(vnode), "vnode");
684			if ((bp + VPTRSZ + VNODESZ) > evbuf)
685				/* XXX - should realloc */
686				errx(1, "no more room for vnodes");
687			memmove(bp, &vp, VPTRSZ);
688			bp += VPTRSZ;
689			memmove(bp, &vnode, VNODESZ);
690			bp += VNODESZ;
691			num++;
692		}
693		if (mp == mountlist.cqh_last)
694			break;
695	}
696	*avnodes = num;
697	return ((struct e_vnode *)vbuf);
698}
699
700char hdr[]="  LINE  RAW  CAN  OUT  HWT LWT    COL STATE      SESS  PGID DISC\n";
701
702void
703ttymode()
704{
705	int ntty, i;
706	struct ttylist_head tty_head;
707	struct tty *tp, tty;
708
709	KGET(TTY_NTTY, ntty);
710	(void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s");
711	KGET(TTY_TTYLIST, tty_head);
712	(void)printf(hdr);
713	for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) {
714		KGET2(tp, &tty, sizeof tty, "tty struct");
715		ttyprt(&tty);
716	}
717}
718
719struct {
720	int flag;
721	char val;
722} ttystates[] = {
723	{ TS_WOPEN,	'W'},
724	{ TS_ISOPEN,	'O'},
725	{ TS_CARR_ON,	'C'},
726	{ TS_TIMEOUT,	'T'},
727	{ TS_FLUSH,	'F'},
728	{ TS_BUSY,	'B'},
729	{ TS_ASLEEP,	'A'},
730	{ TS_XCLUDE,	'X'},
731	{ TS_TTSTOP,	'S'},
732	{ TS_TBLOCK,	'K'},
733	{ TS_ASYNC,	'Y'},
734	{ TS_BKSL,	'D'},
735	{ TS_ERASE,	'E'},
736	{ TS_LNCH,	'L'},
737	{ TS_TYPEN,	'P'},
738	{ TS_CNTTB,	'N'},
739	{ 0,	       '\0'},
740};
741
742void
743ttyprt(tp)
744	register struct tty *tp;
745{
746	register int i, j;
747	pid_t pgid;
748	char *name, state[20];
749
750	if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL)
751		(void)printf("0x%3x:%1x ", major(tp->t_dev), minor(tp->t_dev));
752	else
753		(void)printf("%-7s ", name);
754	(void)printf("%3d %4d ", tp->t_rawq.c_cc, tp->t_canq.c_cc);
755	(void)printf("%4d %4d %3d %6d ", tp->t_outq.c_cc,
756		tp->t_hiwat, tp->t_lowat, tp->t_column);
757	for (i = j = 0; ttystates[i].flag; i++)
758		if (tp->t_state&ttystates[i].flag)
759			state[j++] = ttystates[i].val;
760	if (j == 0)
761		state[j++] = '-';
762	state[j] = '\0';
763	(void)printf("%-6s %8x", state, (u_long)tp->t_session & ~KERNBASE);
764	pgid = 0;
765	if (tp->t_pgrp != NULL)
766		KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid");
767	(void)printf("%6d ", pgid);
768	switch (tp->t_line) {
769	case TTYDISC:
770		(void)printf("term\n");
771		break;
772	case TABLDISC:
773		(void)printf("tab\n");
774		break;
775	case SLIPDISC:
776		(void)printf("slip\n");
777		break;
778	case PPPDISC:
779		(void)printf("ppp\n");
780		break;
781	case STRIPDISC:
782		(void)printf("strip\n");
783		break;
784	default:
785		(void)printf("%d\n", tp->t_line);
786		break;
787	}
788}
789
790void
791filemode()
792{
793	register struct file *fp;
794	struct file *addr;
795	char *buf, flagbuf[16], *fbp;
796	int len, maxfile, nfile;
797	static char *dtypes[] = { "???", "inode", "socket" };
798
799	KGET(FNL_MAXFILE, maxfile);
800	if (totalflag) {
801		KGET(FNL_NFILE, nfile);
802		(void)printf("%3d/%3d files\n", nfile, maxfile);
803		return;
804	}
805	if (getfiles(&buf, &len) == -1)
806		return;
807	/*
808	 * Getfiles returns in malloc'd memory a pointer to the first file
809	 * structure, and then an array of file structs (whose addresses are
810	 * derivable from the previous entry).
811	 */
812	addr = ((struct filelist *)buf)->lh_first;
813	fp = (struct file *)(buf + sizeof(struct filelist));
814	nfile = (len - sizeof(struct filelist)) / sizeof(struct file);
815
816	(void)printf("%d/%d open files\n", nfile, maxfile);
817	(void)printf("   LOC   TYPE    FLG     CNT  MSG    DATA    OFFSET\n");
818	for (; (char *)fp < buf + len; addr = fp->f_list.le_next, fp++) {
819		if ((unsigned)fp->f_type > DTYPE_SOCKET)
820			continue;
821		(void)printf("%x ", addr);
822		(void)printf("%-8.8s", dtypes[fp->f_type]);
823		fbp = flagbuf;
824		if (fp->f_flag & FREAD)
825			*fbp++ = 'R';
826		if (fp->f_flag & FWRITE)
827			*fbp++ = 'W';
828		if (fp->f_flag & FAPPEND)
829			*fbp++ = 'A';
830#ifdef FSHLOCK	/* currently gone */
831		if (fp->f_flag & FSHLOCK)
832			*fbp++ = 'S';
833		if (fp->f_flag & FEXLOCK)
834			*fbp++ = 'X';
835#endif
836		if (fp->f_flag & FASYNC)
837			*fbp++ = 'I';
838		*fbp = '\0';
839		(void)printf("%6s  %3d", flagbuf, fp->f_count);
840		(void)printf("  %3d", fp->f_msgcount);
841		(void)printf("  %8.1x", fp->f_data);
842		if (fp->f_offset < 0)
843			(void)printf("  %qx\n", fp->f_offset);
844		else
845			(void)printf("  %qd\n", fp->f_offset);
846	}
847	free(buf);
848}
849
850int
851getfiles(abuf, alen)
852	char **abuf;
853	int *alen;
854{
855	size_t len;
856	int mib[2];
857	char *buf;
858
859	/*
860	 * XXX
861	 * Add emulation of KINFO_FILE here.
862	 */
863	if (memf != NULL)
864		errx(1, "files on dead kernel, not implemented\n");
865
866	mib[0] = CTL_KERN;
867	mib[1] = KERN_FILE;
868	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) {
869		warn("sysctl: KERN_FILE");
870		return (-1);
871	}
872	if ((buf = malloc(len)) == NULL)
873		err(1, NULL);
874	if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) {
875		warn("sysctl: KERN_FILE");
876		return (-1);
877	}
878	*abuf = buf;
879	*alen = len;
880	return (0);
881}
882
883/*
884 * swapmode is based on a program called swapinfo written
885 * by Kevin Lahey <kml@rokkaku.atl.ga.us>.
886 */
887void
888swapmode()
889{
890	char *header;
891	int hlen, nswap, nswdev, dmmax, nswapmap, niswap, niswdev;
892	int s, e, div, i, l, avail, nfree, npfree, used;
893	struct swdevt *sw;
894	long blocksize, *perdev;
895	struct map *swapmap, *kswapmap;
896	struct mapent *mp;
897
898	KGET(VM_NSWAP, nswap);
899	KGET(VM_NSWDEV, nswdev);
900	KGET(VM_DMMAX, dmmax);
901	KGET(VM_NSWAPMAP, nswapmap);
902	KGET(VM_SWAPMAP, kswapmap);	/* kernel `swapmap' is a pointer */
903	if ((sw = malloc(nswdev * sizeof(*sw))) == NULL ||
904	    (perdev = malloc(nswdev * sizeof(*perdev))) == NULL ||
905	    (mp = malloc(nswapmap * sizeof(*mp))) == NULL)
906		err(1, "malloc");
907	KGET1(VM_SWDEVT, sw, nswdev * sizeof(*sw), "swdevt");
908	KGET2((long)kswapmap, mp, nswapmap * sizeof(*mp), "swapmap");
909
910	/* Supports sequential swap */
911	if (nl[VM_NISWAP].n_value != 0) {
912		KGET(VM_NISWAP, niswap);
913		KGET(VM_NISWDEV, niswdev);
914	} else {
915		niswap = nswap;
916		niswdev = nswdev;
917	}
918
919	/* First entry in map is `struct map'; rest are mapent's. */
920	swapmap = (struct map *)mp;
921	if (nswapmap != swapmap->m_limit - (struct mapent *)kswapmap)
922		errx(1, "panic: nswapmap goof");
923
924	/* Count up swap space. */
925	nfree = 0;
926	memset(perdev, 0, nswdev * sizeof(*perdev));
927	for (mp++; mp->m_addr != 0; mp++) {
928		s = mp->m_addr;			/* start of swap region */
929		e = mp->m_addr + mp->m_size;	/* end of region */
930		nfree += mp->m_size;
931
932		/*
933		 * Swap space is split up among the configured disks.
934		 *
935		 * For interleaved swap devices, the first dmmax blocks
936		 * of swap space some from the first disk, the next dmmax
937		 * blocks from the next, and so on up to niswap blocks.
938		 *
939		 * Sequential swap devices follow the interleaved devices
940		 * (i.e. blocks starting at niswap) in the order in which
941		 * they appear in the swdev table.  The size of each device
942		 * will be a multiple of dmmax.
943		 *
944		 * The list of free space joins adjacent free blocks,
945		 * ignoring device boundries.  If we want to keep track
946		 * of this information per device, we'll just have to
947		 * extract it ourselves.  We know that dmmax-sized chunks
948		 * cannot span device boundaries (interleaved or sequential)
949		 * so we loop over such chunks assigning them to devices.
950		 */
951		i = -1;
952		while (s < e) {		/* XXX this is inefficient */
953			int bound = roundup(s+1, dmmax);
954
955			if (bound > e)
956				bound = e;
957			if (bound <= niswap) {
958				/* Interleaved swap chunk. */
959				if (i == -1)
960					i = (s / dmmax) % niswdev;
961				perdev[i] += bound - s;
962				if (++i >= niswdev)
963					i = 0;
964			} else {
965				/* Sequential swap chunk. */
966				if (i < niswdev) {
967					i = niswdev;
968					l = niswap + sw[i].sw_nblks;
969				}
970				while (s >= l) {
971					/* XXX don't die on bogus blocks */
972					if (i == nswdev-1)
973						break;
974					l += sw[++i].sw_nblks;
975				}
976				perdev[i] += bound - s;
977			}
978			s = bound;
979		}
980	}
981
982	if (kflag) {
983		header = "1K-blocks";
984		blocksize = 1024;
985		hlen = strlen(header);
986	} else
987		header = getbsize(&hlen, &blocksize);
988	if (!totalflag)
989		(void)printf("%-11s %*s %8s %8s %8s  %s\n",
990		    "Device", hlen, header,
991		    "Used", "Avail", "Capacity", "Type");
992	div = blocksize / 512;
993	avail = npfree = 0;
994	for (i = 0; i < nswdev; i++) {
995		int xsize, xfree;
996
997		/*
998		 * Don't report statistics for partitions which have not
999		 * yet been activated via swapon(8).
1000		 */
1001		if (!(sw[i].sw_flags & SW_FREED))
1002			continue;
1003
1004		if (!totalflag)
1005			(void)printf("/dev/%-6s %*d ",
1006			    devname(sw[i].sw_dev, S_IFBLK),
1007			    hlen, sw[i].sw_nblks / div);
1008
1009		xsize = sw[i].sw_nblks;
1010		xfree = perdev[i];
1011		used = xsize - xfree;
1012		npfree++;
1013		avail += xsize;
1014		if (totalflag)
1015			continue;
1016		(void)printf("%8d %8d %5.0f%%    %s\n",
1017		    used / div, xfree / div,
1018		    (double)used / (double)xsize * 100.0,
1019		    (sw[i].sw_flags & SW_SEQUENTIAL) ?
1020			     "Sequential" : "Interleaved");
1021	}
1022
1023	/*
1024	 * If only one partition has been set up via swapon(8), we don't
1025	 * need to bother with totals.
1026	 */
1027	used = avail - nfree;
1028	if (totalflag) {
1029		(void)printf("%dM/%dM swap space\n", used / 2048, avail / 2048);
1030		return;
1031	}
1032	if (npfree > 1) {
1033		(void)printf("%-11s %*d %8d %8d %5.0f%%\n",
1034		    "Total", hlen, avail / div, used / div, nfree / div,
1035		    (double)used / (double)avail * 100.0);
1036	}
1037}
1038
1039void
1040usage()
1041{
1042	(void)fprintf(stderr,
1043	    "usage: pstat [-Tfknstv] [-M core] [-N system]\n");
1044	exit(1);
1045}
1046