pstat.c revision 10032 
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/rpcv2.h>
58#include <nfs/nfsproto.h>
59#include <nfs/nfsnode.h>
60#include <sys/ioctl.h>
61#include <sys/ioctl_compat.h>	/* XXX NTTYDISC is too well hidden */
62#include <sys/tty.h>
63#include <sys/conf.h>
64#include <sys/rlist.h>
65
66#include <sys/sysctl.h>
67
68#include <err.h>
69#include <kvm.h>
70#include <limits.h>
71#include <nlist.h>
72#include <stdio.h>
73#include <stdlib.h>
74#include <string.h>
75#include <unistd.h>
76
77struct nlist nl[] = {
78#define VM_SWAPLIST	0
79	{ "_swaplist" },/* list of free swap areas */
80#define VM_SWDEVT	1
81	{ "_swdevt" },	/* list of swap devices and sizes */
82#define VM_NSWAP	2
83	{ "_nswap" },	/* size of largest swap device */
84#define VM_NSWDEV	3
85	{ "_nswdev" },	/* number of swap devices */
86#define VM_DMMAX	4
87	{ "_dmmax" },	/* maximum size of a swap block */
88#define	V_MOUNTLIST	5
89	{ "_mountlist" },	/* address of head of mount list. */
90#define V_NUMV		6
91	{ "_numvnodes" },
92#define	FNL_NFILE	7
93	{"_nfiles"},
94#define FNL_MAXFILE	8
95	{"_maxfiles"},
96#define NLMANDATORY FNL_MAXFILE	/* names up to here are mandatory */
97#define	SCONS		NLMANDATORY + 1
98	{ "_cons" },
99#define	SPTY		NLMANDATORY + 2
100	{ "_pt_tty" },
101#define	SNPTY		NLMANDATORY + 3
102	{ "_npty" },
103
104#ifdef hp300
105#define	SDCA	(SNPTY+1)
106	{ "_dca_tty" },
107#define	SNDCA	(SNPTY+2)
108	{ "_ndca" },
109#define	SDCM	(SNPTY+3)
110	{ "_dcm_tty" },
111#define	SNDCM	(SNPTY+4)
112	{ "_ndcm" },
113#define	SDCL	(SNPTY+5)
114	{ "_dcl_tty" },
115#define	SNDCL	(SNPTY+6)
116	{ "_ndcl" },
117#define	SITE	(SNPTY+7)
118	{ "_ite_tty" },
119#define	SNITE	(SNPTY+8)
120	{ "_nite" },
121#endif
122
123#ifdef mips
124#define SDC	(SNPTY+1)
125	{ "_dc_tty" },
126#define SNDC	(SNPTY+2)
127	{ "_dc_cnt" },
128#endif
129
130#ifdef __FreeBSD__
131#define SCCONS	(SNPTY+1)
132	{ "_sccons" },
133#define NSCCONS	(SNPTY+2)
134	{ "_nsccons" },
135#define SIO  (SNPTY+3)
136	{ "_sio_tty" },
137#define NSIO (SNPTY+4)
138	{ "_nsio_tty" },
139#define RC  (SNPTY+5)
140	{ "_rc_tty" },
141#define NRC (SNPTY+6)
142	{ "_nrc_tty" },
143#define CY  (SNPTY+7)
144	{ "_cy_tty" },
145#define NCY (SNPTY+8)
146	{ "_ncy_tty" },
147#endif
148	{ "" }
149};
150
151int	usenumflag;
152int	totalflag;
153char	*nlistf	= NULL;
154char	*memf	= NULL;
155kvm_t	*kd;
156
157char	*usage;
158
159#define	SVAR(var) __STRING(var)	/* to force expansion */
160#define	KGET(idx, var)							\
161	KGET1(idx, &var, sizeof(var), SVAR(var))
162#define	KGET1(idx, p, s, msg)						\
163	KGET2(nl[idx].n_value, p, s, msg)
164#define	KGET2(addr, p, s, msg)						\
165	if (kvm_read(kd, (u_long)(addr), p, s) != s)			\
166		warnx("cannot read %s: %s", msg, kvm_geterr(kd))
167#define	KGETRET(addr, p, s, msg)					\
168	if (kvm_read(kd, (u_long)(addr), p, s) != s) {			\
169		warnx("cannot read %s: %s", msg, kvm_geterr(kd));	\
170		return (0);						\
171	}
172
173void	filemode __P((void));
174int	getfiles __P((char **, int *));
175struct mount *
176	getmnt __P((struct mount *));
177struct e_vnode *
178	kinfo_vnodes __P((int *));
179struct e_vnode *
180	loadvnodes __P((int *));
181void	mount_print __P((struct mount *));
182void	nfs_header __P((void));
183int	nfs_print __P((struct vnode *));
184void	swapmode __P((void));
185void	ttymode __P((void));
186void	ttyprt __P((struct tty *, int));
187void	ttytype __P((struct tty *, char *, int, int));
188void	ufs_header __P((void));
189int	ufs_print __P((struct vnode *));
190void	vnode_header __P((void));
191void	vnode_print __P((struct vnode *, struct vnode *));
192void	vnodemode __P((void));
193
194int
195main(argc, argv)
196	int argc;
197	char *argv[];
198{
199	extern char *optarg;
200	extern int optind;
201	int ch, i, quit, ret;
202	int fileflag, swapflag, ttyflag, vnodeflag;
203	char buf[_POSIX2_LINE_MAX],*opts;
204
205	fileflag = swapflag = ttyflag = vnodeflag = 0;
206
207	/* We will behave like good old swapinfo if thus invoked */
208	opts = strrchr(argv[0],'/');
209	if (opts)
210		opts++;
211	else
212		opts = argv[0];
213	if (!strcmp(opts,"swapinfo")) {
214		swapflag = 1;
215		opts = "k";
216		usage = "usage: swapinfo [-k] [-M core] [-N system]\n";
217	} else {
218		opts = "TM:N:fiknstv";
219		usage = "usage: pstat [-Tfknstv] [-M core] [-N system]\n";
220	}
221
222	while ((ch = getopt(argc, argv, opts)) != EOF)
223		switch (ch) {
224		case 'f':
225			fileflag = 1;
226			break;
227		case 'k':
228			putenv("BLOCKSIZE=1K");
229			break;
230		case 'M':
231			memf = optarg;
232			break;
233		case 'N':
234			nlistf = optarg;
235			break;
236		case 'n':
237			usenumflag = 1;
238			break;
239		case 's':
240			swapflag = 1;
241			break;
242		case 'T':
243			totalflag = 1;
244			break;
245		case 't':
246			ttyflag = 1;
247			break;
248		case 'v':
249		case 'i':		/* Backward compatibility. */
250			vnodeflag = 1;
251			break;
252		default:
253			(void)fprintf(stderr, usage);
254			exit(1);
255		}
256	argc -= optind;
257	argv += optind;
258
259	/*
260	 * Discard setgid privileges if not the running kernel so that bad
261	 * guys can't print interesting stuff from kernel memory.
262	 */
263	if (nlistf != NULL || memf != NULL)
264		(void)setgid(getgid());
265
266	if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0)
267		errx(1, "kvm_openfiles: %s", buf);
268	if ((ret = kvm_nlist(kd, nl)) != 0) {
269		if (ret == -1)
270			errx(1, "kvm_nlist: %s", kvm_geterr(kd));
271		for (i = quit = 0; i <= NLMANDATORY; i++)
272			if (!nl[i].n_value) {
273				quit = 1;
274				warnx("undefined symbol: %s\n", nl[i].n_name);
275			}
276		if (quit)
277			exit(1);
278	}
279	if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag)) {
280		(void)fprintf(stderr, usage);
281		exit(1);
282	}
283	if (fileflag || totalflag)
284		filemode();
285	if (vnodeflag || totalflag)
286		vnodemode();
287	if (ttyflag)
288		ttymode();
289	if (swapflag || totalflag)
290		swapmode();
291	exit (0);
292}
293
294struct e_vnode {
295	struct vnode *avnode;
296	struct vnode vnode;
297};
298
299void
300vnodemode()
301{
302	register struct e_vnode *e_vnodebase, *endvnode, *evp;
303	register struct vnode *vp;
304	register struct mount *maddr, *mp;
305	int numvnodes;
306
307	e_vnodebase = loadvnodes(&numvnodes);
308	if (totalflag) {
309		(void)printf("%7d vnodes\n", numvnodes);
310		return;
311	}
312	endvnode = e_vnodebase + numvnodes;
313	(void)printf("%d active vnodes\n", numvnodes);
314
315
316#define ST	mp->mnt_stat
317	maddr = NULL;
318	for (evp = e_vnodebase; evp < endvnode; evp++) {
319		vp = &evp->vnode;
320		if (vp->v_mount != maddr) {
321			/*
322			 * New filesystem
323			 */
324			if ((mp = getmnt(vp->v_mount)) == NULL)
325				continue;
326			maddr = vp->v_mount;
327			mount_print(mp);
328			vnode_header();
329			switch(ST.f_type) {
330			case MOUNT_UFS:
331			case MOUNT_MFS:
332				ufs_header();
333				break;
334			case MOUNT_NFS:
335				nfs_header();
336				break;
337			case MOUNT_NONE:
338			case MOUNT_MSDOS:
339			default:
340				break;
341			}
342			(void)printf("\n");
343		}
344		vnode_print(evp->avnode, vp);
345		switch(ST.f_type) {
346		case MOUNT_UFS:
347		case MOUNT_MFS:
348			ufs_print(vp);
349			break;
350		case MOUNT_NFS:
351			nfs_print(vp);
352			break;
353		case MOUNT_NONE:
354		case MOUNT_MSDOS:
355		default:
356			break;
357		}
358		(void)printf("\n");
359	}
360	free(e_vnodebase);
361}
362
363void
364vnode_header()
365{
366	(void)printf("ADDR     TYP VFLAG  USE HOLD");
367}
368
369void
370vnode_print(avnode, vp)
371	struct vnode *avnode;
372	struct vnode *vp;
373{
374	char *type, flags[16];
375	char *fp = flags;
376	register int flag;
377
378	/*
379	 * set type
380	 */
381	switch(vp->v_type) {
382	case VNON:
383		type = "non"; break;
384	case VREG:
385		type = "reg"; break;
386	case VDIR:
387		type = "dir"; break;
388	case VBLK:
389		type = "blk"; break;
390	case VCHR:
391		type = "chr"; break;
392	case VLNK:
393		type = "lnk"; break;
394	case VSOCK:
395		type = "soc"; break;
396	case VFIFO:
397		type = "fif"; break;
398	case VBAD:
399		type = "bad"; break;
400	default:
401		type = "unk"; break;
402	}
403	/*
404	 * gather flags
405	 */
406	flag = vp->v_flag;
407	if (flag & VROOT)
408		*fp++ = 'R';
409	if (flag & VTEXT)
410		*fp++ = 'T';
411	if (flag & VSYSTEM)
412		*fp++ = 'S';
413	if (flag & VXLOCK)
414		*fp++ = 'L';
415	if (flag & VXWANT)
416		*fp++ = 'W';
417	if (flag & VBWAIT)
418		*fp++ = 'B';
419	if (flag & VALIASED)
420		*fp++ = 'A';
421	if (flag == 0)
422		*fp++ = '-';
423	*fp = '\0';
424	(void)printf("%8x %s %5s %4d %4d",
425	    avnode, type, flags, vp->v_usecount, vp->v_holdcnt);
426}
427
428void
429ufs_header()
430{
431	(void)printf(" FILEID IFLAG RDEV|SZ");
432}
433
434int
435ufs_print(vp)
436	struct vnode *vp;
437{
438	register int flag;
439	struct inode inode, *ip = &inode;
440	char flagbuf[16], *flags = flagbuf;
441	char *name;
442	mode_t type;
443
444	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
445	flag = ip->i_flag;
446	if (flag & IN_LOCKED)
447		*flags++ = 'L';
448	if (flag & IN_WANTED)
449		*flags++ = 'W';
450	if (flag & IN_RENAME)
451		*flags++ = 'R';
452	if (flag & IN_UPDATE)
453		*flags++ = 'U';
454	if (flag & IN_ACCESS)
455		*flags++ = 'A';
456	if (flag & IN_CHANGE)
457		*flags++ = 'C';
458	if (flag & IN_MODIFIED)
459		*flags++ = 'M';
460	if (flag & IN_SHLOCK)
461		*flags++ = 'S';
462	if (flag & IN_EXLOCK)
463		*flags++ = 'E';
464	if (flag & IN_LWAIT)
465		*flags++ = 'Z';
466	if (flag == 0)
467		*flags++ = '-';
468	*flags = '\0';
469
470	(void)printf(" %6d %5s", ip->i_number, flagbuf);
471	type = ip->i_mode & S_IFMT;
472	if (S_ISCHR(ip->i_mode) || S_ISBLK(ip->i_mode))
473		if (usenumflag || ((name = devname(ip->i_rdev, type)) == NULL))
474			(void)printf("   %2d,%-2d",
475			    major(ip->i_rdev), minor(ip->i_rdev));
476		else
477			(void)printf(" %7s", name);
478	else
479		(void)printf(" %7qd", ip->i_size);
480	return (0);
481}
482
483void
484nfs_header()
485{
486	(void)printf(" FILEID NFLAG RDEV|SZ");
487}
488
489int
490nfs_print(vp)
491	struct vnode *vp;
492{
493	struct nfsnode nfsnode, *np = &nfsnode;
494	char flagbuf[16], *flags = flagbuf;
495	register int flag;
496	char *name;
497	mode_t type;
498
499	KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode");
500	flag = np->n_flag;
501	if (flag & NFLUSHWANT)
502		*flags++ = 'W';
503	if (flag & NFLUSHINPROG)
504		*flags++ = 'P';
505	if (flag & NMODIFIED)
506		*flags++ = 'M';
507	if (flag & NWRITEERR)
508		*flags++ = 'E';
509	if (flag & NQNFSNONCACHE)
510		*flags++ = 'X';
511	if (flag & NQNFSWRITE)
512		*flags++ = 'O';
513	if (flag & NQNFSEVICTED)
514		*flags++ = 'G';
515	if (flag == 0)
516		*flags++ = '-';
517	*flags = '\0';
518
519#define VT	np->n_vattr
520	(void)printf(" %6d %5s", VT.va_fileid, flagbuf);
521	type = VT.va_mode & S_IFMT;
522	if (S_ISCHR(VT.va_mode) || S_ISBLK(VT.va_mode))
523		if (usenumflag || ((name = devname(VT.va_rdev, type)) == NULL))
524			(void)printf("   %2d,%-2d",
525			    major(VT.va_rdev), minor(VT.va_rdev));
526		else
527			(void)printf(" %7s", name);
528	else
529		(void)printf(" %7qd", np->n_size);
530	return (0);
531}
532
533/*
534 * Given a pointer to a mount structure in kernel space,
535 * read it in and return a usable pointer to it.
536 */
537struct mount *
538getmnt(maddr)
539	struct mount *maddr;
540{
541	static struct mtab {
542		struct mtab *next;
543		struct mount *maddr;
544		struct mount mount;
545	} *mhead = NULL;
546	register struct mtab *mt;
547
548	for (mt = mhead; mt != NULL; mt = mt->next)
549		if (maddr == mt->maddr)
550			return (&mt->mount);
551	if ((mt = malloc(sizeof(struct mtab))) == NULL)
552		err(1, NULL);
553	KGETRET(maddr, &mt->mount, sizeof(struct mount), "mount table");
554	mt->maddr = maddr;
555	mt->next = mhead;
556	mhead = mt;
557	return (&mt->mount);
558}
559
560void
561mount_print(mp)
562	struct mount *mp;
563{
564	register int flags;
565	char *type;
566
567#define ST	mp->mnt_stat
568	(void)printf("*** MOUNT ");
569	switch (ST.f_type) {
570	case MOUNT_NONE:
571		type = "none";
572		break;
573	case MOUNT_UFS:
574		type = "ufs";
575		break;
576	case MOUNT_NFS:
577		type = "nfs";
578		break;
579	case MOUNT_MFS:
580		type = "mfs";
581		break;
582	case MOUNT_MSDOS:
583		type = "pc";
584		break;
585	default:
586		type = "unknown";
587		break;
588	}
589	(void)printf("%s %s on %s", type, ST.f_mntfromname, ST.f_mntonname);
590	if (flags = mp->mnt_flag) {
591		char *comma = "(";
592
593		putchar(' ');
594		/* user visable flags */
595		if (flags & MNT_RDONLY) {
596			(void)printf("%srdonly", comma);
597			flags &= ~MNT_RDONLY;
598			comma = ",";
599		}
600		if (flags & MNT_SYNCHRONOUS) {
601			(void)printf("%ssynchronous", comma);
602			flags &= ~MNT_SYNCHRONOUS;
603			comma = ",";
604		}
605		if (flags & MNT_NOEXEC) {
606			(void)printf("%snoexec", comma);
607			flags &= ~MNT_NOEXEC;
608			comma = ",";
609		}
610		if (flags & MNT_NOSUID) {
611			(void)printf("%snosuid", comma);
612			flags &= ~MNT_NOSUID;
613			comma = ",";
614		}
615		if (flags & MNT_NODEV) {
616			(void)printf("%snodev", comma);
617			flags &= ~MNT_NODEV;
618			comma = ",";
619		}
620		if (flags & MNT_EXPORTED) {
621			(void)printf("%sexport", comma);
622			flags &= ~MNT_EXPORTED;
623			comma = ",";
624		}
625		if (flags & MNT_EXRDONLY) {
626			(void)printf("%sexrdonly", comma);
627			flags &= ~MNT_EXRDONLY;
628			comma = ",";
629		}
630		if (flags & MNT_LOCAL) {
631			(void)printf("%slocal", comma);
632			flags &= ~MNT_LOCAL;
633			comma = ",";
634		}
635		if (flags & MNT_QUOTA) {
636			(void)printf("%squota", comma);
637			flags &= ~MNT_QUOTA;
638			comma = ",";
639		}
640		/* filesystem control flags */
641		if (flags & MNT_UPDATE) {
642			(void)printf("%supdate", comma);
643			flags &= ~MNT_UPDATE;
644			comma = ",";
645		}
646		if (flags & MNT_MLOCK) {
647			(void)printf("%slock", comma);
648			flags &= ~MNT_MLOCK;
649			comma = ",";
650		}
651		if (flags & MNT_MWAIT) {
652			(void)printf("%swait", comma);
653			flags &= ~MNT_MWAIT;
654			comma = ",";
655		}
656		if (flags & MNT_MPBUSY) {
657			(void)printf("%sbusy", comma);
658			flags &= ~MNT_MPBUSY;
659			comma = ",";
660		}
661		if (flags & MNT_MPWANT) {
662			(void)printf("%swant", comma);
663			flags &= ~MNT_MPWANT;
664			comma = ",";
665		}
666		if (flags & MNT_UNMOUNT) {
667			(void)printf("%sunmount", comma);
668			flags &= ~MNT_UNMOUNT;
669			comma = ",";
670		}
671		if (flags)
672			(void)printf("%sunknown_flags:%x", comma, flags);
673		(void)printf(")");
674	}
675	(void)printf("\n");
676#undef ST
677}
678
679struct e_vnode *
680loadvnodes(avnodes)
681	int *avnodes;
682{
683	int mib[2];
684	size_t copysize;
685	struct e_vnode *vnodebase;
686
687	if (memf != NULL) {
688		/*
689		 * do it by hand
690		 */
691		return (kinfo_vnodes(avnodes));
692	}
693	mib[0] = CTL_KERN;
694	mib[1] = KERN_VNODE;
695	if (sysctl(mib, 2, NULL, &copysize, NULL, 0) == -1)
696		err(1, "sysctl: KERN_VNODE");
697	if ((vnodebase = malloc(copysize)) == NULL)
698		err(1, NULL);
699	if (sysctl(mib, 2, vnodebase, &copysize, NULL, 0) == -1)
700		err(1, "sysctl: KERN_VNODE");
701	if (copysize % sizeof(struct e_vnode))
702		errx(1, "vnode size mismatch");
703	*avnodes = copysize / sizeof(struct e_vnode);
704
705	return (vnodebase);
706}
707
708/*
709 * simulate what a running kernel does in in kinfo_vnode
710 */
711struct e_vnode *
712kinfo_vnodes(avnodes)
713	int *avnodes;
714{
715	struct mntlist mountlist;
716	struct mount *mp, mount;
717	struct vnode *vp, vnode;
718	char *vbuf, *evbuf, *bp;
719	int num, numvnodes;
720
721#define VPTRSZ  sizeof(struct vnode *)
722#define VNODESZ sizeof(struct vnode)
723
724	KGET(V_NUMV, numvnodes);
725	if ((vbuf = malloc((numvnodes + 20) * (VPTRSZ + VNODESZ))) == NULL)
726		err(1, NULL);
727	bp = vbuf;
728	evbuf = vbuf + (numvnodes + 20) * (VPTRSZ + VNODESZ);
729	KGET(V_MOUNTLIST, mountlist);
730	for (num = 0, mp = mountlist.cqh_first; ; mp = mp->mnt_list.cqe_next) {
731		KGET2(mp, &mount, sizeof(mount), "mount entry");
732		for (vp = mount.mnt_vnodelist.lh_first;
733		    vp != NULL; vp = vp->v_mntvnodes.le_next) {
734			KGET2(vp, &vnode, sizeof(vnode), "vnode");
735			if ((bp + VPTRSZ + VNODESZ) > evbuf)
736				/* XXX - should realloc */
737				errx(1, "no more room for vnodes");
738			memmove(bp, &vp, VPTRSZ);
739			bp += VPTRSZ;
740			memmove(bp, &vnode, VNODESZ);
741			bp += VNODESZ;
742			num++;
743		}
744		if (mp == mountlist.cqh_last)
745			break;
746	}
747	*avnodes = num;
748	return ((struct e_vnode *)vbuf);
749}
750
751char hdr[]="  LINE RAW CAN OUT  HWT LWT     COL STATE  SESS  PGID DISC\n";
752int ttyspace = 128;
753
754void
755ttymode()
756{
757	struct tty *tty;
758
759	if ((tty = malloc(ttyspace * sizeof(*tty))) == NULL)
760		err(1, NULL);
761#ifndef hp300
762	if (nl[SCONS].n_type != 0) {
763		(void)printf("1 console\n");
764		KGET(SCONS, *tty);
765		(void)printf(hdr);
766		ttyprt(&tty[0], 0);
767	}
768#endif
769#ifdef vax
770	if (nl[SNQD].n_type != 0)
771		qdss();
772	if (nl[SNDZ].n_type != 0)
773		ttytype(tty, "dz", SDZ, SNDZ);
774	if (nl[SNDH].n_type != 0)
775		ttytype(tty, "dh", SDH, SNDH);
776	if (nl[SNDMF].n_type != 0)
777		ttytype(tty, "dmf", SDMF, SNDMF);
778	if (nl[SNDHU].n_type != 0)
779		ttytype(tty, "dhu", SDHU, SNDHU);
780	if (nl[SNDMZ].n_type != 0)
781		ttytype(tty, "dmz", SDMZ, SNDMZ);
782#endif
783#ifdef tahoe
784	if (nl[SNVX].n_type != 0)
785		ttytype(tty, "vx", SVX, SNVX);
786	if (nl[SNMP].n_type != 0)
787		ttytype(tty, "mp", SMP, SNMP);
788#endif
789#ifdef hp300
790	if (nl[SNITE].n_type != 0)
791		ttytype(tty, "ite", SITE, SNITE);
792	if (nl[SNDCA].n_type != 0)
793		ttytype(tty, "dca", SDCA, SNDCA);
794	if (nl[SNDCM].n_type != 0)
795		ttytype(tty, "dcm", SDCM, SNDCM);
796	if (nl[SNDCL].n_type != 0)
797		ttytype(tty, "dcl", SDCL, SNDCL);
798#endif
799#ifdef mips
800	if (nl[SNDC].n_type != 0)
801		ttytype(tty, "dc", SDC, SNDC);
802#endif
803#ifdef __FreeBSD__
804	if (nl[NSCCONS].n_type != 0)
805		ttytype(tty, "vty", SCCONS, NSCCONS);
806	if (nl[NSIO].n_type != 0)
807		ttytype(tty, "sio", SIO, NSIO);
808	if (nl[NRC].n_type != 0)
809		ttytype(tty, "rc", RC, NRC);
810	if (nl[NCY].n_type != 0)
811		ttytype(tty, "cy", CY, NCY);
812#endif
813	if (nl[SNPTY].n_type != 0)
814		ttytype(tty, "pty", SPTY, SNPTY);
815}
816
817void
818ttytype(tty, name, type, number)
819	register struct tty *tty;
820	char *name;
821	int type, number;
822{
823	register struct tty *tp;
824	int ntty;
825
826	if (tty == NULL)
827		return;
828	KGET(number, ntty);
829	(void)printf("%d %s %s\n", ntty, name, (ntty == 1) ? "line" : "lines");
830	if (ntty > ttyspace) {
831		ttyspace = ntty;
832		if ((tty = realloc(tty, ttyspace * sizeof(*tty))) == 0)
833			err(1, NULL);
834	}
835	KGET1(type, tty, ntty * sizeof(struct tty), "tty structs");
836	(void)printf(hdr);
837	for (tp = tty; tp < &tty[ntty]; tp++)
838		ttyprt(tp, tp - tty);
839}
840
841struct {
842	int flag;
843	char val;
844} ttystates[] = {
845#ifdef TS_WOPEN
846	{ TS_WOPEN,	'W'},
847#endif
848	{ TS_ISOPEN,	'O'},
849	{ TS_CARR_ON,	'C'},
850#ifdef TS_CONNECTED
851	{ TS_CONNECTED,	'c'},
852#endif
853	{ TS_TIMEOUT,	'T'},
854	{ TS_FLUSH,	'F'},
855	{ TS_BUSY,	'B'},
856#ifdef TS_ASLEEP
857	{ TS_ASLEEP,	'A'},
858#endif
859#ifdef TS_SO_OLOWAT
860	{ TS_SO_OLOWAT,	'A'},
861#endif
862#ifdef TS_SO_OCOMPLETE
863	{ TS_SO_OCOMPLETE, 'a'},
864#endif
865	{ TS_XCLUDE,	'X'},
866	{ TS_TTSTOP,	'S'},
867#ifdef TS_CAR_OFLOW
868	{ TS_CAR_OFLOW,	'm'},
869#endif
870#ifdef TS_CTS_OFLOW
871	{ TS_CTS_OFLOW,	'o'},
872#endif
873#ifdef TS_DSR_OFLOW
874	{ TS_DSR_OFLOW,	'd'},
875#endif
876	{ TS_TBLOCK,	'K'},
877	{ TS_ASYNC,	'Y'},
878	{ TS_BKSL,	'D'},
879	{ TS_ERASE,	'E'},
880	{ TS_LNCH,	'L'},
881	{ TS_TYPEN,	'P'},
882	{ TS_CNTTB,	'N'},
883#ifdef TS_CAN_BYPASS_L_RINT
884	{ TS_CAN_BYPASS_L_RINT, 'l'},
885#endif
886#ifdef TS_SNOOP
887	{ TS_SNOOP,     's'},
888#endif
889#ifdef TS_ZOMBIE
890	{ TS_ZOMBIE,	'Z'},
891#endif
892	{ 0,	       '\0'},
893};
894
895void
896ttyprt(tp, line)
897	register struct tty *tp;
898	int line;
899{
900	register int i, j;
901	pid_t pgid;
902	char *name, state[20];
903
904	if (usenumflag || tp->t_dev == 0 ||
905	   (name = devname(tp->t_dev, S_IFCHR)) == NULL)
906		(void)printf("%7d ", line);
907	else
908		(void)printf("%7s ", name);
909	(void)printf("%2d %3d ", tp->t_rawq.c_cc, tp->t_canq.c_cc);
910	(void)printf("%3d %4d %3d %7d ", tp->t_outq.c_cc,
911		tp->t_hiwat, tp->t_lowat, tp->t_column);
912	for (i = j = 0; ttystates[i].flag; i++)
913		if (tp->t_state&ttystates[i].flag)
914			state[j++] = ttystates[i].val;
915	if (j == 0)
916		state[j++] = '-';
917	state[j] = '\0';
918	(void)printf("%-4s %6x", state, (u_long)tp->t_session & ~KERNBASE);
919	pgid = 0;
920	if (tp->t_pgrp != NULL)
921		KGET2(&tp->t_pgrp->pg_id, &pgid, sizeof(pid_t), "pgid");
922	(void)printf("%6d ", pgid);
923	switch (tp->t_line) {
924	case TTYDISC:
925		(void)printf("term\n");
926		break;
927	case NTTYDISC:
928		(void)printf("ntty\n");
929		break;
930	case TABLDISC:
931		(void)printf("tab\n");
932		break;
933	case SLIPDISC:
934		(void)printf("slip\n");
935		break;
936	case PPPDISC:
937		(void)printf("ppp\n");
938		break;
939	default:
940		(void)printf("%d\n", tp->t_line);
941		break;
942	}
943}
944
945void
946filemode()
947{
948	register struct file *fp;
949	struct file *addr;
950	char *buf, flagbuf[16], *fbp;
951	int len, maxfile, nfile;
952	static char *dtypes[] = { "???", "inode", "socket" };
953
954	KGET(FNL_MAXFILE, maxfile);
955	if (totalflag) {
956		KGET(FNL_NFILE, nfile);
957		(void)printf("%3d/%3d files\n", nfile, maxfile);
958		return;
959	}
960	if (getfiles(&buf, &len) == -1)
961		return;
962	/*
963	 * Getfiles returns in malloc'd memory a pointer to the first file
964	 * structure, and then an array of file structs (whose addresses are
965	 * derivable from the previous entry).
966	 */
967	addr = *((struct file **)buf);
968	fp = (struct file *)(buf + sizeof(struct file *));
969	nfile = (len - sizeof(struct file *)) / sizeof(struct file);
970
971	(void)printf("%d/%d open files\n", nfile, maxfile);
972	(void)printf("   LOC   TYPE    FLG     CNT  MSG    DATA    OFFSET\n");
973	for (; (char *)fp < buf + len; addr = fp->f_filef, fp++) {
974		if ((unsigned)fp->f_type > DTYPE_SOCKET)
975			continue;
976		(void)printf("%x ", addr);
977		(void)printf("%-8.8s", dtypes[fp->f_type]);
978		fbp = flagbuf;
979		if (fp->f_flag & FREAD)
980			*fbp++ = 'R';
981		if (fp->f_flag & FWRITE)
982			*fbp++ = 'W';
983		if (fp->f_flag & FAPPEND)
984			*fbp++ = 'A';
985#ifdef FSHLOCK	/* currently gone */
986		if (fp->f_flag & FSHLOCK)
987			*fbp++ = 'S';
988		if (fp->f_flag & FEXLOCK)
989			*fbp++ = 'X';
990#endif
991		if (fp->f_flag & FASYNC)
992			*fbp++ = 'I';
993		*fbp = '\0';
994		(void)printf("%6s  %3d", flagbuf, fp->f_count);
995		(void)printf("  %3d", fp->f_msgcount);
996		(void)printf("  %8.1x", fp->f_data);
997		if (fp->f_offset < 0)
998			(void)printf("  %qx\n", fp->f_offset);
999		else
1000			(void)printf("  %qd\n", fp->f_offset);
1001	}
1002	free(buf);
1003}
1004
1005int
1006getfiles(abuf, alen)
1007	char **abuf;
1008	int *alen;
1009{
1010	size_t len;
1011	int mib[2];
1012	char *buf;
1013
1014	/*
1015	 * XXX
1016	 * Add emulation of KINFO_FILE here.
1017	 */
1018	if (memf != NULL)
1019		errx(1, "files on dead kernel, not implemented\n");
1020
1021	mib[0] = CTL_KERN;
1022	mib[1] = KERN_FILE;
1023	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) {
1024		warn("sysctl: KERN_FILE");
1025		return (-1);
1026	}
1027	if ((buf = malloc(len)) == NULL)
1028		err(1, NULL);
1029	if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) {
1030		warn("sysctl: KERN_FILE");
1031		return (-1);
1032	}
1033	*abuf = buf;
1034	*alen = len;
1035	return (0);
1036}
1037
1038/*
1039 * swapmode is based on a program called swapinfo written
1040 * by Kevin Lahey <kml@rokkaku.atl.ga.us>.
1041 */
1042void
1043swapmode()
1044{
1045	char *header;
1046	int hlen, nswap, nswdev, dmmax;
1047	int i, div, avail, nfree, npfree, used;
1048	struct swdevt *sw;
1049	long blocksize, *perdev;
1050	struct rlist head;
1051	struct rlist *swaplist;
1052	u_long ptr;
1053
1054	KGET(VM_NSWAP, nswap);
1055	KGET(VM_NSWDEV, nswdev);
1056	KGET(VM_DMMAX, dmmax);
1057	KGET(VM_SWAPLIST, swaplist);
1058	if ((sw = malloc(nswdev * sizeof(*sw))) == NULL ||
1059	    (perdev = malloc(nswdev * sizeof(*perdev))) == NULL)
1060		err(1, "malloc");
1061	KGET1(VM_SWDEVT, &ptr, sizeof ptr, "swdevt");
1062	KGET2(ptr, sw, nswdev * sizeof(*sw), "*swdevt");
1063
1064	/* Count up swap space. */
1065	nfree = 0;
1066	memset(perdev, 0, nswdev * sizeof(*perdev));
1067	while (swaplist) {
1068		int	top, bottom, next_block;
1069
1070		KGET2(swaplist, &head, sizeof(struct rlist), "swaplist");
1071
1072		top = head.rl_end;
1073		bottom = head.rl_start;
1074
1075		nfree += top - bottom + 1;
1076
1077		/*
1078		 * Swap space is split up among the configured disks.
1079		 *
1080		 * For interleaved swap devices, the first dmmax blocks
1081		 * of swap space some from the first disk, the next dmmax
1082		 * blocks from the next, and so on up to nswap blocks.
1083		 *
1084		 * The list of free space joins adjacent free blocks,
1085		 * ignoring device boundries.  If we want to keep track
1086		 * of this information per device, we'll just have to
1087		 * extract it ourselves.
1088		 */
1089		while (top / dmmax != bottom / dmmax) {
1090			next_block = ((bottom + dmmax) / dmmax);
1091			perdev[(bottom / dmmax) % nswdev] +=
1092				next_block * dmmax - bottom;
1093			bottom = next_block * dmmax;
1094		}
1095		perdev[(bottom / dmmax) % nswdev] +=
1096			top - bottom + 1;
1097
1098		swaplist = head.rl_next;
1099	}
1100
1101	header = getbsize(&hlen, &blocksize);
1102	if (!totalflag)
1103		(void)printf("%-11s %*s %8s %8s %8s  %s\n",
1104		    "Device", hlen, header,
1105		    "Used", "Avail", "Capacity", "Type");
1106	div = blocksize / 512;
1107	avail = npfree = 0;
1108	for (i = 0; i < nswdev; i++) {
1109		int xsize, xfree;
1110
1111		/*
1112		 * Don't report statistics for partitions which have not
1113		 * yet been activated via swapon(8).
1114		 */
1115		if (!(sw[i].sw_flags & SW_FREED))
1116			continue;
1117
1118		if (!totalflag)
1119			(void)printf("/dev/%-6s %*d ",
1120			    devname(sw[i].sw_dev, S_IFBLK),
1121			    hlen, sw[i].sw_nblks / div);
1122
1123		/* The first dmmax is never allocated to avoid trashing of
1124		 * disklabels
1125		 */
1126		xsize = sw[i].sw_nblks - dmmax;
1127		xfree = perdev[i];
1128		used = xsize - xfree;
1129		npfree++;
1130		avail += xsize;
1131		if (totalflag)
1132			continue;
1133		(void)printf("%8d %8d %5.0f%%    %s\n",
1134		    used / div, xfree / div,
1135		    (double)used / (double)xsize * 100.0,
1136		    (sw[i].sw_flags & SW_SEQUENTIAL) ?
1137			     "Sequential" : "Interleaved");
1138	}
1139
1140	/*
1141	 * If only one partition has been set up via swapon(8), we don't
1142	 * need to bother with totals.
1143	 */
1144	used = avail - nfree;
1145	if (totalflag) {
1146		(void)printf("%dM/%dM swap space\n", used / 2048, avail / 2048);
1147		return;
1148	}
1149	if (npfree > 1) {
1150		(void)printf("%-11s %*d %8d %8d %5.0f%%\n",
1151		    "Total", hlen, avail / div, used / div, nfree / div,
1152		    (double)used / (double)avail * 100.0);
1153	}
1154}
1155