pstat.c revision 3494 
1/*-
2 * Copyright (c) 1980, 1991, 1993
3 *	The Regents of the University of California.  All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 *    notice, this list of conditions and the following disclaimer in the
12 *    documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 *    must display the following acknowledgement:
15 *	This product includes software developed by the University of
16 *	California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 *    may be used to endorse or promote products derived from this software
19 *    without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34#ifndef lint
35static char copyright[] =
36"@(#) Copyright (c) 1980, 1991, 1993\n\
37	The Regents of the University of California.  All rights reserved.\n";
38#endif /* not lint */
39
40#ifndef lint
41static char sccsid[] = "@(#)pstat.c	8.9 (Berkeley) 2/16/94";
42#endif /* not lint */
43
44#include <sys/param.h>
45#include <sys/time.h>
46#include <sys/vnode.h>
47#include <sys/ucred.h>
48#define KERNEL
49#include <sys/file.h>
50#include <ufs/ufs/quota.h>
51#include <ufs/ufs/inode.h>
52#define NFS
53#include <sys/mount.h>
54#undef NFS
55#undef KERNEL
56#include <sys/stat.h>
57#include <nfs/nfsnode.h>
58#include <sys/ioctl.h>
59#include <sys/tty.h>
60#include <sys/conf.h>
61#include <sys/rlist.h>
62
63#include <sys/sysctl.h>
64
65#include <err.h>
66#include <kvm.h>
67#include <limits.h>
68#include <nlist.h>
69#include <stdio.h>
70#include <stdlib.h>
71#include <string.h>
72#include <unistd.h>
73
74struct nlist nl[] = {
75#define VM_SWAPLIST	0
76	{ "_swaplist" },/* list of free swap areas */
77#define VM_SWDEVT	1
78	{ "_swdevt" },	/* list of swap devices and sizes */
79#define VM_NSWAP	2
80	{ "_nswap" },	/* size of largest swap device */
81#define VM_NSWDEV	3
82	{ "_nswdev" },	/* number of swap devices */
83#define VM_DMMAX	4
84	{ "_dmmax" },	/* maximum size of a swap block */
85#define	V_MOUNTLIST	5
86	{ "_mountlist" },	/* address of head of mount list. */
87#define V_NUMV		6
88	{ "_numvnodes" },
89#define	FNL_NFILE	7
90	{"_nfiles"},
91#define FNL_MAXFILE	8
92	{"_maxfiles"},
93#define NLMANDATORY FNL_MAXFILE	/* names up to here are mandatory */
94#define	SCONS		NLMANDATORY + 1
95	{ "_cons" },
96#define	SPTY		NLMANDATORY + 2
97	{ "_pt_tty" },
98#define	SNPTY		NLMANDATORY + 3
99	{ "_npty" },
100
101#ifdef hp300
102#define	SDCA	(SNPTY+1)
103	{ "_dca_tty" },
104#define	SNDCA	(SNPTY+2)
105	{ "_ndca" },
106#define	SDCM	(SNPTY+3)
107	{ "_dcm_tty" },
108#define	SNDCM	(SNPTY+4)
109	{ "_ndcm" },
110#define	SDCL	(SNPTY+5)
111	{ "_dcl_tty" },
112#define	SNDCL	(SNPTY+6)
113	{ "_ndcl" },
114#define	SITE	(SNPTY+7)
115	{ "_ite_tty" },
116#define	SNITE	(SNPTY+8)
117	{ "_nite" },
118#endif
119
120#ifdef mips
121#define SDC	(SNPTY+1)
122	{ "_dc_tty" },
123#define SNDC	(SNPTY+2)
124	{ "_dc_cnt" },
125#endif
126
127	{ "" }
128};
129
130int	usenumflag;
131int	totalflag;
132char	*nlistf	= NULL;
133char	*memf	= NULL;
134kvm_t	*kd;
135
136#define	SVAR(var) __STRING(var)	/* to force expansion */
137#define	KGET(idx, var)							\
138	KGET1(idx, &var, sizeof(var), SVAR(var))
139#define	KGET1(idx, p, s, msg)						\
140	KGET2(nl[idx].n_value, p, s, msg)
141#define	KGET2(addr, p, s, msg)						\
142	if (kvm_read(kd, (u_long)(addr), p, s) != s)			\
143		warnx("cannot read %s: %s", msg, kvm_geterr(kd))
144#define	KGETRET(addr, p, s, msg)					\
145	if (kvm_read(kd, (u_long)(addr), p, s) != s) {			\
146		warnx("cannot read %s: %s", msg, kvm_geterr(kd));	\
147		return (0);						\
148	}
149
150void	filemode __P((void));
151int	getfiles __P((char **, int *));
152struct mount *
153	getmnt __P((struct mount *));
154struct e_vnode *
155	kinfo_vnodes __P((int *));
156struct e_vnode *
157	loadvnodes __P((int *));
158void	mount_print __P((struct mount *));
159void	nfs_header __P((void));
160int	nfs_print __P((struct vnode *));
161void	swapmode __P((void));
162void	ttymode __P((void));
163void	ttyprt __P((struct tty *, int));
164void	ttytype __P((struct tty *, char *, int, int));
165void	ufs_header __P((void));
166int	ufs_print __P((struct vnode *));
167void	usage __P((void));
168void	vnode_header __P((void));
169void	vnode_print __P((struct vnode *, struct vnode *));
170void	vnodemode __P((void));
171
172int
173main(argc, argv)
174	int argc;
175	char *argv[];
176{
177	extern char *optarg;
178	extern int optind;
179	int ch, i, quit, ret;
180	int fileflag, swapflag, ttyflag, vnodeflag;
181	char buf[_POSIX2_LINE_MAX];
182
183	fileflag = swapflag = ttyflag = vnodeflag = 0;
184	while ((ch = getopt(argc, argv, "TM:N:finstv")) != EOF)
185		switch (ch) {
186		case 'f':
187			fileflag = 1;
188			break;
189		case 'M':
190			memf = optarg;
191			break;
192		case 'N':
193			nlistf = optarg;
194			break;
195		case 'n':
196			usenumflag = 1;
197			break;
198		case 's':
199			swapflag = 1;
200			break;
201		case 'T':
202			totalflag = 1;
203			break;
204		case 't':
205			ttyflag = 1;
206			break;
207		case 'v':
208		case 'i':		/* Backward compatibility. */
209			vnodeflag = 1;
210			break;
211		default:
212			usage();
213		}
214	argc -= optind;
215	argv += optind;
216
217	/*
218	 * Discard setgid privileges if not the running kernel so that bad
219	 * guys can't print interesting stuff from kernel memory.
220	 */
221	if (nlistf != NULL || memf != NULL)
222		(void)setgid(getgid());
223
224	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0)
225		errx(1, "kvm_openfiles: %s", buf);
226	if ((ret = kvm_nlist(kd, nl)) != 0) {
227		if (ret == -1)
228			errx(1, "kvm_nlist: %s", kvm_geterr(kd));
229		for (i = quit = 0; i <= NLMANDATORY; i++)
230			if (!nl[i].n_value) {
231				quit = 1;
232				warnx("undefined symbol: %s\n", nl[i].n_name);
233			}
234		if (quit)
235			exit(1);
236	}
237	if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag))
238		usage();
239	if (fileflag || totalflag)
240		filemode();
241	if (vnodeflag || totalflag)
242		vnodemode();
243	if (ttyflag)
244		ttymode();
245	if (swapflag || totalflag)
246		swapmode();
247	exit (0);
248}
249
250struct e_vnode {
251	struct vnode *avnode;
252	struct vnode vnode;
253};
254
255void
256vnodemode()
257{
258	register struct e_vnode *e_vnodebase, *endvnode, *evp;
259	register struct vnode *vp;
260	register struct mount *maddr, *mp;
261	int numvnodes;
262
263	e_vnodebase = loadvnodes(&numvnodes);
264	if (totalflag) {
265		(void)printf("%7d vnodes\n", numvnodes);
266		return;
267	}
268	endvnode = e_vnodebase + numvnodes;
269	(void)printf("%d active vnodes\n", numvnodes);
270
271
272#define ST	mp->mnt_stat
273	maddr = NULL;
274	for (evp = e_vnodebase; evp < endvnode; evp++) {
275		vp = &evp->vnode;
276		if (vp->v_mount != maddr) {
277			/*
278			 * New filesystem
279			 */
280			if ((mp = getmnt(vp->v_mount)) == NULL)
281				continue;
282			maddr = vp->v_mount;
283			mount_print(mp);
284			vnode_header();
285			switch(ST.f_type) {
286			case MOUNT_UFS:
287			case MOUNT_MFS:
288				ufs_header();
289				break;
290			case MOUNT_NFS:
291				nfs_header();
292				break;
293			case MOUNT_NONE:
294			case MOUNT_MSDOS:
295			default:
296				break;
297			}
298			(void)printf("\n");
299		}
300		vnode_print(evp->avnode, vp);
301		switch(ST.f_type) {
302		case MOUNT_UFS:
303		case MOUNT_MFS:
304			ufs_print(vp);
305			break;
306		case MOUNT_NFS:
307			nfs_print(vp);
308			break;
309		case MOUNT_NONE:
310		case MOUNT_MSDOS:
311		default:
312			break;
313		}
314		(void)printf("\n");
315	}
316	free(e_vnodebase);
317}
318
319void
320vnode_header()
321{
322	(void)printf("ADDR     TYP VFLAG  USE HOLD");
323}
324
325void
326vnode_print(avnode, vp)
327	struct vnode *avnode;
328	struct vnode *vp;
329{
330	char *type, flags[16];
331	char *fp = flags;
332	register int flag;
333
334	/*
335	 * set type
336	 */
337	switch(vp->v_type) {
338	case VNON:
339		type = "non"; break;
340	case VREG:
341		type = "reg"; break;
342	case VDIR:
343		type = "dir"; break;
344	case VBLK:
345		type = "blk"; break;
346	case VCHR:
347		type = "chr"; break;
348	case VLNK:
349		type = "lnk"; break;
350	case VSOCK:
351		type = "soc"; break;
352	case VFIFO:
353		type = "fif"; break;
354	case VBAD:
355		type = "bad"; break;
356	default:
357		type = "unk"; break;
358	}
359	/*
360	 * gather flags
361	 */
362	flag = vp->v_flag;
363	if (flag & VROOT)
364		*fp++ = 'R';
365	if (flag & VTEXT)
366		*fp++ = 'T';
367	if (flag & VSYSTEM)
368		*fp++ = 'S';
369	if (flag & VXLOCK)
370		*fp++ = 'L';
371	if (flag & VXWANT)
372		*fp++ = 'W';
373	if (flag & VBWAIT)
374		*fp++ = 'B';
375	if (flag & VALIASED)
376		*fp++ = 'A';
377	if (flag == 0)
378		*fp++ = '-';
379	*fp = '\0';
380	(void)printf("%8x %s %5s %4d %4d",
381	    avnode, type, flags, vp->v_usecount, vp->v_holdcnt);
382}
383
384void
385ufs_header()
386{
387	(void)printf(" FILEID IFLAG RDEV|SZ");
388}
389
390int
391ufs_print(vp)
392	struct vnode *vp;
393{
394	register int flag;
395	struct inode inode, *ip = &inode;
396	char flagbuf[16], *flags = flagbuf;
397	char *name;
398	mode_t type;
399
400	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
401	flag = ip->i_flag;
402	if (flag & IN_LOCKED)
403		*flags++ = 'L';
404	if (flag & IN_WANTED)
405		*flags++ = 'W';
406	if (flag & IN_RENAME)
407		*flags++ = 'R';
408	if (flag & IN_UPDATE)
409		*flags++ = 'U';
410	if (flag & IN_ACCESS)
411		*flags++ = 'A';
412	if (flag & IN_CHANGE)
413		*flags++ = 'C';
414	if (flag & IN_MODIFIED)
415		*flags++ = 'M';
416	if (flag & IN_SHLOCK)
417		*flags++ = 'S';
418	if (flag & IN_EXLOCK)
419		*flags++ = 'E';
420	if (flag & IN_LWAIT)
421		*flags++ = 'Z';
422	if (flag == 0)
423		*flags++ = '-';
424	*flags = '\0';
425
426	(void)printf(" %6d %5s", ip->i_number, flagbuf);
427	type = ip->i_mode & S_IFMT;
428	if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode))
429		if (usenumflag || ((name = devname(ip->i_rdev, type)) == NULL))
430			(void)printf("   %2d,%-2d",
431			    major(ip->i_rdev), minor(ip->i_rdev));
432		else
433			(void)printf(" %7s", name);
434	else
435		(void)printf(" %7qd", ip->i_size);
436	return (0);
437}
438
439void
440nfs_header()
441{
442	(void)printf(" FILEID NFLAG RDEV|SZ");
443}
444
445int
446nfs_print(vp)
447	struct vnode *vp;
448{
449	struct nfsnode nfsnode, *np = &nfsnode;
450	char flagbuf[16], *flags = flagbuf;
451	register int flag;
452	char *name;
453	mode_t type;
454
455	KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode");
456	flag = np->n_flag;
457	if (flag & NFLUSHWANT)
458		*flags++ = 'W';
459	if (flag & NFLUSHINPROG)
460		*flags++ = 'P';
461	if (flag & NMODIFIED)
462		*flags++ = 'M';
463	if (flag & NWRITEERR)
464		*flags++ = 'E';
465	if (flag & NQNFSNONCACHE)
466		*flags++ = 'X';
467	if (flag & NQNFSWRITE)
468		*flags++ = 'O';
469	if (flag & NQNFSEVICTED)
470		*flags++ = 'G';
471	if (flag == 0)
472		*flags++ = '-';
473	*flags = '\0';
474
475#define VT	np->n_vattr
476	(void)printf(" %6d %5s", VT.va_fileid, flagbuf);
477	type = VT.va_mode & S_IFMT;
478	if (S_ISCHR(VT.va_mode) || S_ISBLK(VT.va_mode))
479		if (usenumflag || ((name = devname(VT.va_rdev, type)) == NULL))
480			(void)printf("   %2d,%-2d",
481			    major(VT.va_rdev), minor(VT.va_rdev));
482		else
483			(void)printf(" %7s", name);
484	else
485		(void)printf(" %7qd", np->n_size);
486	return (0);
487}
488
489/*
490 * Given a pointer to a mount structure in kernel space,
491 * read it in and return a usable pointer to it.
492 */
493struct mount *
494getmnt(maddr)
495	struct mount *maddr;
496{
497	static struct mtab {
498		struct mtab *next;
499		struct mount *maddr;
500		struct mount mount;
501	} *mhead = NULL;
502	register struct mtab *mt;
503
504	for (mt = mhead; mt != NULL; mt = mt->next)
505		if (maddr == mt->maddr)
506			return (&mt->mount);
507	if ((mt = malloc(sizeof(struct mtab))) == NULL)
508		err(1, NULL);
509	KGETRET(maddr, &mt->mount, sizeof(struct mount), "mount table");
510	mt->maddr = maddr;
511	mt->next = mhead;
512	mhead = mt;
513	return (&mt->mount);
514}
515
516void
517mount_print(mp)
518	struct mount *mp;
519{
520	register int flags;
521	char *type;
522
523#define ST	mp->mnt_stat
524	(void)printf("*** MOUNT ");
525	switch (ST.f_type) {
526	case MOUNT_NONE:
527		type = "none";
528		break;
529	case MOUNT_UFS:
530		type = "ufs";
531		break;
532	case MOUNT_NFS:
533		type = "nfs";
534		break;
535	case MOUNT_MFS:
536		type = "mfs";
537		break;
538	case MOUNT_MSDOS:
539		type = "pc";
540		break;
541	default:
542		type = "unknown";
543		break;
544	}
545	(void)printf("%s %s on %s", type, ST.f_mntfromname, ST.f_mntonname);
546	if (flags = mp->mnt_flag) {
547		char *comma = "(";
548
549		putchar(' ');
550		/* user visable flags */
551		if (flags & MNT_RDONLY) {
552			(void)printf("%srdonly", comma);
553			flags &= ~MNT_RDONLY;
554			comma = ",";
555		}
556		if (flags & MNT_SYNCHRONOUS) {
557			(void)printf("%ssynchronous", comma);
558			flags &= ~MNT_SYNCHRONOUS;
559			comma = ",";
560		}
561		if (flags & MNT_NOEXEC) {
562			(void)printf("%snoexec", comma);
563			flags &= ~MNT_NOEXEC;
564			comma = ",";
565		}
566		if (flags & MNT_NOSUID) {
567			(void)printf("%snosuid", comma);
568			flags &= ~MNT_NOSUID;
569			comma = ",";
570		}
571		if (flags & MNT_NODEV) {
572			(void)printf("%snodev", comma);
573			flags &= ~MNT_NODEV;
574			comma = ",";
575		}
576		if (flags & MNT_EXPORTED) {
577			(void)printf("%sexport", comma);
578			flags &= ~MNT_EXPORTED;
579			comma = ",";
580		}
581		if (flags & MNT_EXRDONLY) {
582			(void)printf("%sexrdonly", comma);
583			flags &= ~MNT_EXRDONLY;
584			comma = ",";
585		}
586		if (flags & MNT_LOCAL) {
587			(void)printf("%slocal", comma);
588			flags &= ~MNT_LOCAL;
589			comma = ",";
590		}
591		if (flags & MNT_QUOTA) {
592			(void)printf("%squota", comma);
593			flags &= ~MNT_QUOTA;
594			comma = ",";
595		}
596		/* filesystem control flags */
597		if (flags & MNT_UPDATE) {
598			(void)printf("%supdate", comma);
599			flags &= ~MNT_UPDATE;
600			comma = ",";
601		}
602		if (flags & MNT_MLOCK) {
603			(void)printf("%slock", comma);
604			flags &= ~MNT_MLOCK;
605			comma = ",";
606		}
607		if (flags & MNT_MWAIT) {
608			(void)printf("%swait", comma);
609			flags &= ~MNT_MWAIT;
610			comma = ",";
611		}
612		if (flags & MNT_MPBUSY) {
613			(void)printf("%sbusy", comma);
614			flags &= ~MNT_MPBUSY;
615			comma = ",";
616		}
617		if (flags & MNT_MPWANT) {
618			(void)printf("%swant", comma);
619			flags &= ~MNT_MPWANT;
620			comma = ",";
621		}
622		if (flags & MNT_UNMOUNT) {
623			(void)printf("%sunmount", comma);
624			flags &= ~MNT_UNMOUNT;
625			comma = ",";
626		}
627		if (flags)
628			(void)printf("%sunknown_flags:%x", comma, flags);
629		(void)printf(")");
630	}
631	(void)printf("\n");
632#undef ST
633}
634
635struct e_vnode *
636loadvnodes(avnodes)
637	int *avnodes;
638{
639	int mib[2];
640	size_t copysize;
641	struct e_vnode *vnodebase;
642
643	if (memf != NULL) {
644		/*
645		 * do it by hand
646		 */
647		return (kinfo_vnodes(avnodes));
648	}
649	mib[0] = CTL_KERN;
650	mib[1] = KERN_VNODE;
651	if (sysctl(mib, 2, NULL, &copysize, NULL, 0) == -1)
652		err(1, "sysctl: KERN_VNODE");
653	if ((vnodebase = malloc(copysize)) == NULL)
654		err(1, NULL);
655	if (sysctl(mib, 2, vnodebase, &copysize, NULL, 0) == -1)
656		err(1, "sysctl: KERN_VNODE");
657	if (copysize % sizeof(struct e_vnode))
658		errx(1, "vnode size mismatch");
659	*avnodes = copysize / sizeof(struct e_vnode);
660
661	return (vnodebase);
662}
663
664/*
665 * simulate what a running kernel does in in kinfo_vnode
666 */
667struct e_vnode *
668kinfo_vnodes(avnodes)
669	int *avnodes;
670{
671	struct mntlist mountlist;
672	struct mount *mp, mount;
673	struct vnode *vp, vnode;
674	char *vbuf, *evbuf, *bp;
675	int num, numvnodes;
676
677#define VPTRSZ  sizeof(struct vnode *)
678#define VNODESZ sizeof(struct vnode)
679
680	KGET(V_NUMV, numvnodes);
681	if ((vbuf = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL)
682		err(1, NULL);
683	bp = vbuf;
684	evbuf = vbuf + (numvnodes + 20) * (VPTRSZ + VNODESZ);
685	KGET(V_MOUNTLIST, mountlist);
686	for (num = 0, mp = mountlist.tqh_first;
687	    mp != NULL; mp = mp->mnt_list.tqe_next) {
688		KGET2(mp, &mount, sizeof(mount), "mount entry");
689		for (vp = mount.mnt_vnodelist.lh_first;
690		    vp != NULL; vp = vp->v_mntvnodes.le_next) {
691			KGET2(vp, &vnode, sizeof(vnode), "vnode");
692			if ((bp + VPTRSZ + VNODESZ) > evbuf)
693				/* XXX - should realloc */
694				errx(1, "no more room for vnodes");
695			memmove(bp, &vp, VPTRSZ);
696			bp += VPTRSZ;
697			memmove(bp, &vnode, VNODESZ);
698			bp += VNODESZ;
699			num++;
700		}
701	}
702	*avnodes = num;
703	return ((struct e_vnode *)vbuf);
704}
705
706char hdr[]="  LINE RAW CAN OUT  HWT LWT     COL STATE  SESS  PGID DISC\n";
707int ttyspace = 128;
708
709void
710ttymode()
711{
712	struct tty *tty;
713
714	if ((tty = malloc(ttyspace * sizeof(*tty))) == NULL)
715		err(1, NULL);
716#ifndef hp300
717	(void)printf("1 console\n");
718	KGET(SCONS, *tty);
719	(void)printf(hdr);
720	ttyprt(&tty[0], 0);
721#endif
722#ifdef vax
723	if (nl[SNQD].n_type != 0)
724		qdss();
725	if (nl[SNDZ].n_type != 0)
726		ttytype(tty, "dz", SDZ, SNDZ);
727	if (nl[SNDH].n_type != 0)
728		ttytype(tty, "dh", SDH, SNDH);
729	if (nl[SNDMF].n_type != 0)
730		ttytype(tty, "dmf", SDMF, SNDMF);
731	if (nl[SNDHU].n_type != 0)
732		ttytype(tty, "dhu", SDHU, SNDHU);
733	if (nl[SNDMZ].n_type != 0)
734		ttytype(tty, "dmz", SDMZ, SNDMZ);
735#endif
736#ifdef tahoe
737	if (nl[SNVX].n_type != 0)
738		ttytype(tty, "vx", SVX, SNVX);
739	if (nl[SNMP].n_type != 0)
740		ttytype(tty, "mp", SMP, SNMP);
741#endif
742#ifdef hp300
743	if (nl[SNITE].n_type != 0)
744		ttytype(tty, "ite", SITE, SNITE);
745	if (nl[SNDCA].n_type != 0)
746		ttytype(tty, "dca", SDCA, SNDCA);
747	if (nl[SNDCM].n_type != 0)
748		ttytype(tty, "dcm", SDCM, SNDCM);
749	if (nl[SNDCL].n_type != 0)
750		ttytype(tty, "dcl", SDCL, SNDCL);
751#endif
752#ifdef mips
753	if (nl[SNDC].n_type != 0)
754		ttytype(tty, "dc", SDC, SNDC);
755#endif
756	if (nl[SNPTY].n_type != 0)
757		ttytype(tty, "pty", SPTY, SNPTY);
758}
759
760void
761ttytype(tty, name, type, number)
762	register struct tty *tty;
763	char *name;
764	int type, number;
765{
766	register struct tty *tp;
767	int ntty;
768
769	if (tty == NULL)
770		return;
771	KGET(number, ntty);
772	(void)printf("%d %s %s\n", ntty, name, (ntty == 1) ? "line" : "lines");
773	if (ntty > ttyspace) {
774		ttyspace = ntty;
775		if ((tty = realloc(tty, ttyspace * sizeof(*tty))) == 0)
776			err(1, NULL);
777	}
778	KGET1(type, tty, ntty * sizeof(struct tty), "tty structs");
779	(void)printf(hdr);
780	for (tp = tty; tp < &tty[ntty]; tp++)
781		ttyprt(tp, tp - tty);
782}
783
784struct {
785	int flag;
786	char val;
787} ttystates[] = {
788	{ TS_WOPEN,	'W'},
789	{ TS_ISOPEN,	'O'},
790	{ TS_CARR_ON,	'C'},
791	{ TS_TIMEOUT,	'T'},
792	{ TS_FLUSH,	'F'},
793	{ TS_BUSY,	'B'},
794	{ TS_ASLEEP,	'A'},
795	{ TS_XCLUDE,	'X'},
796	{ TS_TTSTOP,	'S'},
797	{ TS_TBLOCK,	'K'},
798	{ TS_ASYNC,	'Y'},
799	{ TS_BKSL,	'D'},
800	{ TS_ERASE,	'E'},
801	{ TS_LNCH,	'L'},
802	{ TS_TYPEN,	'P'},
803	{ TS_CNTTB,	'N'},
804	{ 0,	       '\0'},
805};
806
807void
808ttyprt(tp, line)
809	register struct tty *tp;
810	int line;
811{
812	register int i, j;
813	pid_t pgid;
814	char *name, state[20];
815
816	if (usenumflag || tp->t_dev == 0 ||
817	   (name = devname(tp->t_dev, S_IFCHR)) == NULL)
818		(void)printf("%7d ", line);
819	else
820		(void)printf("%7s ", name);
821	(void)printf("%2d %3d ", tp->t_rawq.c_cc, tp->t_canq.c_cc);
822	(void)printf("%3d %4d %3d %3d ", tp->t_outq.c_cc,
823		tp->t_hiwat, tp->t_lowat, tp->t_column);
824	for (i = j = 0; ttystates[i].flag; i++)
825		if (tp->t_state&ttystates[i].flag)
826			state[j++] = ttystates[i].val;
827	if (j == 0)
828		state[j++] = '-';
829	state[j] = '\0';
830	(void)printf("%-4s %6x", state, (u_long)tp->t_session & ~KERNBASE);
831	pgid = 0;
832	if (tp->t_pgrp != NULL)
833		KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid");
834	(void)printf("%6d ", pgid);
835	switch (tp->t_line) {
836	case TTYDISC:
837		(void)printf("term\n");
838		break;
839	case TABLDISC:
840		(void)printf("tab\n");
841		break;
842	case SLIPDISC:
843		(void)printf("slip\n");
844		break;
845	default:
846		(void)printf("%d\n", tp->t_line);
847		break;
848	}
849}
850
851void
852filemode()
853{
854	register struct file *fp;
855	struct file *addr;
856	char *buf, flagbuf[16], *fbp;
857	int len, maxfile, nfile;
858	static char *dtypes[] = { "???", "inode", "socket" };
859
860	KGET(FNL_MAXFILE, maxfile);
861	if (totalflag) {
862		KGET(FNL_NFILE, nfile);
863		(void)printf("%3d/%3d files\n", nfile, maxfile);
864		return;
865	}
866	if (getfiles(&buf, &len) == -1)
867		return;
868	/*
869	 * Getfiles returns in malloc'd memory a pointer to the first file
870	 * structure, and then an array of file structs (whose addresses are
871	 * derivable from the previous entry).
872	 */
873	addr = *((struct file **)buf);
874	fp = (struct file *)(buf + sizeof(struct file *));
875	nfile = (len - sizeof(struct file *)) / sizeof(struct file);
876
877	(void)printf("%d/%d open files\n", nfile, maxfile);
878	(void)printf("   LOC   TYPE    FLG     CNT  MSG    DATA    OFFSET\n");
879	for (; (char *)fp < buf + len; addr = fp->f_filef, fp++) {
880		if ((unsigned)fp->f_type > DTYPE_SOCKET)
881			continue;
882		(void)printf("%x ", addr);
883		(void)printf("%-8.8s", dtypes[fp->f_type]);
884		fbp = flagbuf;
885		if (fp->f_flag & FREAD)
886			*fbp++ = 'R';
887		if (fp->f_flag & FWRITE)
888			*fbp++ = 'W';
889		if (fp->f_flag & FAPPEND)
890			*fbp++ = 'A';
891#ifdef FSHLOCK	/* currently gone */
892		if (fp->f_flag & FSHLOCK)
893			*fbp++ = 'S';
894		if (fp->f_flag & FEXLOCK)
895			*fbp++ = 'X';
896#endif
897		if (fp->f_flag & FASYNC)
898			*fbp++ = 'I';
899		*fbp = '\0';
900		(void)printf("%6s  %3d", flagbuf, fp->f_count);
901		(void)printf("  %3d", fp->f_msgcount);
902		(void)printf("  %8.1x", fp->f_data);
903		if (fp->f_offset < 0)
904			(void)printf("  %qx\n", fp->f_offset);
905		else
906			(void)printf("  %qd\n", fp->f_offset);
907	}
908	free(buf);
909}
910
911int
912getfiles(abuf, alen)
913	char **abuf;
914	int *alen;
915{
916	size_t len;
917	int mib[2];
918	char *buf;
919
920	/*
921	 * XXX
922	 * Add emulation of KINFO_FILE here.
923	 */
924	if (memf != NULL)
925		errx(1, "files on dead kernel, not implemented\n");
926
927	mib[0] = CTL_KERN;
928	mib[1] = KERN_FILE;
929	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) {
930		warn("sysctl: KERN_FILE");
931		return (-1);
932	}
933	if ((buf = malloc(len)) == NULL)
934		err(1, NULL);
935	if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) {
936		warn("sysctl: KERN_FILE");
937		return (-1);
938	}
939	*abuf = buf;
940	*alen = len;
941	return (0);
942}
943
944/*
945 * swapmode is based on a program called swapinfo written
946 * by Kevin Lahey <kml@rokkaku.atl.ga.us>.
947 */
948void
949swapmode()
950{
951	char *header;
952	int hlen, nswap, nswdev, dmmax;
953	int i, div, avail, nfree, npfree, used;
954	struct swdevt *sw;
955	long blocksize, *perdev;
956	struct rlist head;
957	struct rlist *swaplist;
958
959	KGET(VM_NSWAP, nswap);
960	KGET(VM_NSWDEV, nswdev);
961	KGET(VM_DMMAX, dmmax);
962	KGET(VM_SWAPLIST, swaplist);
963	if ((sw = malloc(nswdev * sizeof(*sw))) == NULL ||
964	    (perdev = malloc(nswdev * sizeof(*perdev))) == NULL)
965		err(1, "malloc");
966	KGET1(VM_SWDEVT, sw, nswdev * sizeof(*sw), "swdevt");
967
968	/* Count up swap space. */
969	nfree = 0;
970	memset(perdev, 0, nswdev * sizeof(*perdev));
971	while (swaplist) {
972		int	top, bottom, next_block;
973
974		KGET2(swaplist, &head, sizeof(struct rlist), "swaplist");
975
976		top = head.rl_end;
977		bottom = head.rl_start;
978
979		nfree += top - bottom + 1;
980
981		/*
982		 * Swap space is split up among the configured disks.
983		 *
984		 * For interleaved swap devices, the first dmmax blocks
985		 * of swap space some from the first disk, the next dmmax
986		 * blocks from the next, and so on up to nswap blocks.
987		 *
988		 * The list of free space joins adjacent free blocks,
989		 * ignoring device boundries.  If we want to keep track
990		 * of this information per device, we'll just have to
991		 * extract it ourselves.
992		 */
993		while (top / dmmax != bottom / dmmax) {
994			next_block = ((bottom + dmmax) / dmmax);
995			perdev[(bottom / dmmax) % nswdev] +=
996				next_block * dmmax - bottom;
997			bottom = next_block * dmmax;
998		}
999		perdev[(bottom / dmmax) % nswdev] +=
1000			top - bottom + 1;
1001
1002		swaplist = head.rl_next;
1003	}
1004
1005	header = getbsize(&hlen, &blocksize);
1006	if (!totalflag)
1007		(void)printf("%-11s %*s %8s %8s %8s  %s\n",
1008		    "Device", hlen, header,
1009		    "Used", "Avail", "Capacity", "Type");
1010	div = blocksize / 512;
1011	avail = npfree = 0;
1012	for (i = 0; i < nswdev; i++) {
1013		int xsize, xfree;
1014
1015		if (!totalflag)
1016			(void)printf("/dev/%-6s %*d ",
1017			    devname(sw[i].sw_dev, S_IFBLK),
1018			    hlen, sw[i].sw_nblks / div);
1019
1020		/*
1021		 * Don't report statistics for partitions which have not
1022		 * yet been activated via swapon(8).
1023		 */
1024		if (!(sw[i].sw_flags & SW_FREED)) {
1025			if (totalflag)
1026				continue;
1027			(void)printf(" *** not available for swapping ***\n");
1028			continue;
1029		}
1030		xsize = sw[i].sw_nblks;
1031		xfree = perdev[i];
1032		used = xsize - xfree;
1033		npfree++;
1034		avail += xsize;
1035		if (totalflag)
1036			continue;
1037		(void)printf("%8d %8d %5.0f%%    %s\n",
1038		    used / div, xfree / div,
1039		    (double)used / (double)xsize * 100.0,
1040		    (sw[i].sw_flags & SW_SEQUENTIAL) ?
1041			     "Sequential" : "Interleaved");
1042	}
1043
1044	/*
1045	 * If only one partition has been set up via swapon(8), we don't
1046	 * need to bother with totals.
1047	 */
1048	used = avail - nfree;
1049	if (totalflag) {
1050		(void)printf("%dM/%dM swap space\n", used / 2048, avail / 2048);
1051		return;
1052	}
1053	if (npfree > 1) {
1054		(void)printf("%-11s %*d %8d %8d %5.0f%%\n",
1055		    "Total", hlen, avail / div, used / div, nfree / div,
1056		    (double)used / (double)avail * 100.0);
1057	}
1058}
1059
1060void
1061usage()
1062{
1063	(void)fprintf(stderr,
1064	    "usage: pstat -Tfnstv [system] [-M core] [-N system]\n");
1065	exit(1);
1066}
1067