pstat.c revision 1.44 
1/*	$OpenBSD: pstat.c,v 1.44 2003/06/02 23:36:54 millert 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. Neither the name of the University nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33#ifndef lint
34static char copyright[] =
35"@(#) Copyright (c) 1980, 1991, 1993\n\
36	The Regents of the University of California.  All rights reserved.\n";
37#endif /* not lint */
38
39#ifndef lint
40#if 0
41from: static char sccsid[] = "@(#)pstat.c	8.9 (Berkeley) 2/16/94";
42#else
43static char *rcsid = "$OpenBSD: pstat.c,v 1.44 2003/06/02 23:36:54 millert Exp $";
44#endif
45#endif /* not lint */
46
47#include <sys/param.h>
48#include <sys/time.h>
49#include <sys/buf.h>
50#include <sys/vnode.h>
51#include <sys/ucred.h>
52#define _KERNEL
53#include <sys/file.h>
54#include <ufs/ufs/quota.h>
55#include <ufs/ufs/inode.h>
56#define NFS
57#include <sys/mount.h>
58#undef NFS
59#undef _KERNEL
60#include <sys/stat.h>
61#include <nfs/nfsproto.h>
62#include <nfs/rpcv2.h>
63#include <nfs/nfsnode.h>
64#include <sys/ioctl.h>
65#include <sys/tty.h>
66#include <sys/conf.h>
67#include <sys/device.h>
68#include <sys/swap.h>
69
70#include <sys/sysctl.h>
71
72#include <err.h>
73#include <kvm.h>
74#include <limits.h>
75#include <nlist.h>
76#include <paths.h>
77#include <stdio.h>
78#include <stdlib.h>
79#include <string.h>
80#include <unistd.h>
81
82struct nlist nl[] = {
83#define	FNL_NFILE	0		/* sysctl */
84	{"_nfiles"},
85#define FNL_MAXFILE	1		/* sysctl */
86	{"_maxfiles"},
87#define TTY_NTTY	2		/* sysctl */
88	{"_tty_count"},
89#define V_NUMV		3		/* sysctl */
90	{ "_numvnodes" },
91#define TTY_TTYLIST	4		/* sysctl */
92	{"_ttylist"},
93#define	V_MOUNTLIST	5		/* no sysctl */
94	{ "_mountlist" },
95	{ "" }
96};
97
98int	usenumflag;
99int	totalflag;
100int	kflag;
101char	*nlistf	= NULL;
102char	*memf	= NULL;
103kvm_t	*kd = NULL;
104
105#define	SVAR(var) __STRING(var)	/* to force expansion */
106#define	KGET(idx, var)							\
107	KGET1(idx, &var, sizeof(var), SVAR(var))
108#define	KGET1(idx, p, s, msg)						\
109	KGET2(nl[idx].n_value, p, s, msg)
110#define	KGET2(addr, p, s, msg)						\
111	if (kvm_read(kd, (u_long)(addr), p, s) != s)			\
112		warnx("cannot read %s: %s", msg, kvm_geterr(kd))
113#define	KGETRET(addr, p, s, msg)					\
114	if (kvm_read(kd, (u_long)(addr), p, s) != s) {			\
115		warnx("cannot read %s: %s", msg, kvm_geterr(kd));	\
116		return (0);						\
117	}
118
119void	filemode(void);
120int	getfiles(char **, size_t *);
121struct mount *
122	getmnt(struct mount *);
123struct e_vnode *
124	kinfo_vnodes(int *);
125struct e_vnode *
126	loadvnodes(int *);
127void	mount_print(struct mount *);
128void	nfs_header(void);
129int	nfs_print(struct vnode *);
130void	swapmode(void);
131void	ttymode(void);
132void	ttyprt(struct itty *);
133void	ufs_header(void);
134int	ufs_print(struct vnode *);
135void	ext2fs_header(void);
136int	ext2fs_print(struct vnode *);
137void	usage(void);
138void	vnode_header(void);
139void	vnode_print(struct vnode *, struct vnode *);
140void	vnodemode(void);
141
142int
143main(int argc, char *argv[])
144{
145	int fileflag = 0, swapflag = 0, ttyflag = 0, vnodeflag = 0;
146	char buf[_POSIX2_LINE_MAX];
147	int ch, ret;
148	extern char *optarg;
149	extern int optind;
150
151	while ((ch = getopt(argc, argv, "TM:N:fiknstv")) != -1)
152		switch (ch) {
153		case 'f':
154			fileflag = 1;
155			break;
156		case 'M':
157			memf = optarg;
158			break;
159		case 'N':
160			nlistf = optarg;
161			break;
162		case 'n':
163			usenumflag = 1;
164			break;
165		case 's':
166			swapflag = 1;
167			break;
168		case 'T':
169			totalflag = 1;
170			break;
171		case 't':
172			ttyflag = 1;
173			break;
174		case 'k':
175			kflag = 1;
176			break;
177		case 'v':
178		case 'i':		/* Backward compatibility. */
179			vnodeflag = 1;
180			break;
181		default:
182			usage();
183		}
184	argc -= optind;
185	argv += optind;
186
187	/*
188	 * Discard setgid privileges if not the running kernel so that bad
189	 * guys can't print interesting stuff from kernel memory.
190	 */
191	if (nlistf != NULL || memf != NULL) {
192		(void)setegid(getgid());
193		(void)setgid(getgid());
194	}
195
196	if (vnodeflag)
197		if ((kd = kvm_openfiles(nlistf, memf, NULL, O_RDONLY, buf)) == 0)
198			errx(1, "kvm_openfiles: %s", buf);
199
200	(void)setegid(getgid());
201	(void)setgid(getgid());
202
203	if (vnodeflag)
204		if ((ret = kvm_nlist(kd, nl)) == -1)
205			errx(1, "kvm_nlist: %s", kvm_geterr(kd));
206
207	if (!(fileflag | vnodeflag | ttyflag | swapflag | totalflag))
208		usage();
209	if (fileflag || totalflag)
210		filemode();
211	if (vnodeflag || totalflag)
212		vnodemode();
213	if (ttyflag)
214		ttymode();
215	if (swapflag || totalflag)
216		swapmode();
217	exit(0);
218}
219
220void
221vnodemode(void)
222{
223	struct e_vnode *e_vnodebase, *endvnode, *evp;
224	struct vnode *vp;
225	struct mount *maddr, *mp = NULL;
226	int numvnodes;
227
228	e_vnodebase = loadvnodes(&numvnodes);
229	if (totalflag) {
230		(void)printf("%7d vnodes\n", numvnodes);
231		return;
232	}
233	endvnode = e_vnodebase + numvnodes;
234	(void)printf("%d active vnodes\n", numvnodes);
235
236	maddr = NULL;
237	for (evp = e_vnodebase; evp < endvnode; evp++) {
238		vp = &evp->vnode;
239		if (vp->v_mount != maddr) {
240			/*
241			 * New filesystem
242			 */
243			if ((mp = getmnt(vp->v_mount)) == NULL)
244				continue;
245			maddr = vp->v_mount;
246			mount_print(mp);
247			vnode_header();
248			if (!strncmp(mp->mnt_stat.f_fstypename, MOUNT_FFS, MFSNAMELEN) ||
249			    !strncmp(mp->mnt_stat.f_fstypename, MOUNT_MFS, MFSNAMELEN)) {
250				ufs_header();
251			} else if (!strncmp(mp->mnt_stat.f_fstypename, MOUNT_NFS,
252			    MFSNAMELEN)) {
253				nfs_header();
254			} else if (!strncmp(mp->mnt_stat.f_fstypename, MOUNT_EXT2FS,
255			    MFSNAMELEN)) {
256				ext2fs_header();
257			}
258			(void)printf("\n");
259		}
260		vnode_print(evp->vptr, vp);
261		if (!strncmp(mp->mnt_stat.f_fstypename, MOUNT_FFS, MFSNAMELEN) ||
262		    !strncmp(mp->mnt_stat.f_fstypename, MOUNT_MFS, MFSNAMELEN)) {
263			ufs_print(vp);
264		} else if (!strncmp(mp->mnt_stat.f_fstypename, MOUNT_NFS, MFSNAMELEN)) {
265			nfs_print(vp);
266		} else if (!strncmp(mp->mnt_stat.f_fstypename, MOUNT_EXT2FS,
267		    MFSNAMELEN)) {
268			ext2fs_print(vp);
269		}
270		(void)printf("\n");
271	}
272	free(e_vnodebase);
273}
274
275void
276vnode_header(void)
277{
278	(void)printf("ADDR     TYP VFLAG  USE HOLD");
279}
280
281void
282vnode_print(struct vnode *avnode, struct vnode *vp)
283{
284	char *type, flags[16];
285	char *fp = flags;
286	int flag;
287
288	/*
289	 * set type
290	 */
291	switch (vp->v_type) {
292	case VNON:
293		type = "non"; break;
294	case VREG:
295		type = "reg"; break;
296	case VDIR:
297		type = "dir"; break;
298	case VBLK:
299		type = "blk"; break;
300	case VCHR:
301		type = "chr"; break;
302	case VLNK:
303		type = "lnk"; break;
304	case VSOCK:
305		type = "soc"; break;
306	case VFIFO:
307		type = "fif"; break;
308	case VBAD:
309		type = "bad"; break;
310	default:
311		type = "unk"; break;
312	}
313	/*
314	 * gather flags
315	 */
316	flag = vp->v_flag;
317	if (flag & VROOT)
318		*fp++ = 'R';
319	if (flag & VTEXT)
320		*fp++ = 'T';
321	if (flag & VSYSTEM)
322		*fp++ = 'S';
323	if (flag & VISTTY)
324		*fp++ = 'I';
325	if (flag & VXLOCK)
326		*fp++ = 'L';
327	if (flag & VXWANT)
328		*fp++ = 'W';
329	if (vp->v_bioflag & VBIOWAIT)
330		*fp++ = 'B';
331	if (flag & VALIASED)
332		*fp++ = 'A';
333	if (vp->v_bioflag & VBIOONFREELIST)
334		*fp++ = 'F';
335	if (flag & VLOCKSWORK)
336		*fp++ = 'l';
337	if (vp->v_bioflag & VBIOONSYNCLIST)
338		*fp++ = 's';
339	if (flag == 0)
340		*fp++ = '-';
341	*fp = '\0';
342	(void)printf("%8lx %s %5s %4d %4u",
343	    (long)avnode, type, flags, vp->v_usecount, vp->v_holdcnt);
344}
345
346void
347ufs_header(void)
348{
349	(void)printf(" FILEID IFLAG RDEV|SZ");
350}
351
352int
353ufs_print(struct vnode *vp)
354{
355	int flag;
356	struct inode inode, *ip = &inode;
357	char flagbuf[16], *flags = flagbuf;
358	char *name;
359	mode_t type;
360
361	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
362	flag = ip->i_flag;
363#if 0
364	if (flag & IN_LOCKED)
365		*flags++ = 'L';
366	if (flag & IN_WANTED)
367		*flags++ = 'W';
368	if (flag & IN_LWAIT)
369		*flags++ = 'Z';
370#endif
371	if (flag & IN_ACCESS)
372		*flags++ = 'A';
373	if (flag & IN_CHANGE)
374		*flags++ = 'C';
375	if (flag & IN_UPDATE)
376		*flags++ = 'U';
377	if (flag & IN_MODIFIED)
378		*flags++ = 'M';
379	if (flag & IN_RENAME)
380		*flags++ = 'R';
381	if (flag & IN_SHLOCK)
382		*flags++ = 'S';
383	if (flag & IN_EXLOCK)
384		*flags++ = 'E';
385	if (flag == 0)
386		*flags++ = '-';
387	*flags = '\0';
388
389	(void)printf(" %6d %5s", ip->i_number, flagbuf);
390	type = ip->i_ffs_mode & S_IFMT;
391	if (S_ISCHR(ip->i_ffs_mode) || S_ISBLK(ip->i_ffs_mode))
392		if (usenumflag ||
393		    ((name = devname(ip->i_ffs_rdev, type)) == NULL))
394			(void)printf("   %2d,%-2d",
395			    major(ip->i_ffs_rdev), minor(ip->i_ffs_rdev));
396		else
397			(void)printf(" %7s", name);
398	else
399		(void)printf(" %7qd", ip->i_ffs_size);
400	return (0);
401}
402
403void
404ext2fs_header(void)
405{
406	(void)printf(" FILEID IFLAG SZ");
407}
408
409int
410ext2fs_print(struct vnode *vp)
411{
412	int flag;
413	struct inode inode, *ip = &inode;
414	char flagbuf[16], *flags = flagbuf;
415
416	KGETRET(VTOI(vp), &inode, sizeof(struct inode), "vnode's inode");
417	flag = ip->i_flag;
418#if 0
419	if (flag & IN_LOCKED)
420		*flags++ = 'L';
421	if (flag & IN_WANTED)
422		*flags++ = 'W';
423	if (flag & IN_LWAIT)
424		*flags++ = 'Z';
425#endif
426	if (flag & IN_ACCESS)
427		*flags++ = 'A';
428	if (flag & IN_CHANGE)
429		*flags++ = 'C';
430	if (flag & IN_UPDATE)
431		*flags++ = 'U';
432	if (flag & IN_MODIFIED)
433		*flags++ = 'M';
434	if (flag & IN_RENAME)
435		*flags++ = 'R';
436	if (flag & IN_SHLOCK)
437		*flags++ = 'S';
438	if (flag & IN_EXLOCK)
439		*flags++ = 'E';
440	if (flag == 0)
441		*flags++ = '-';
442	*flags = '\0';
443
444	(void)printf(" %6d %5s %2d", ip->i_number, flagbuf, ip->i_e2fs_size);
445	return (0);
446}
447
448void
449nfs_header(void)
450{
451	(void)printf(" FILEID NFLAG RDEV|SZ");
452}
453
454int
455nfs_print(struct vnode *vp)
456{
457	struct nfsnode nfsnode, *np = &nfsnode;
458	char flagbuf[16], *flags = flagbuf;
459	int flag;
460	char *name;
461	mode_t type;
462
463	KGETRET(VTONFS(vp), &nfsnode, sizeof(nfsnode), "vnode's nfsnode");
464	flag = np->n_flag;
465	if (flag & NFLUSHWANT)
466		*flags++ = 'W';
467	if (flag & NFLUSHINPROG)
468		*flags++ = 'P';
469	if (flag & NMODIFIED)
470		*flags++ = 'M';
471	if (flag & NWRITEERR)
472		*flags++ = 'E';
473	if (flag & NACC)
474		*flags++ = 'A';
475	if (flag & NUPD)
476		*flags++ = 'U';
477	if (flag & NCHG)
478		*flags++ = 'C';
479	if (flag == 0)
480		*flags++ = '-';
481	*flags = '\0';
482
483	(void)printf(" %6ld %5s", np->n_vattr.va_fileid, flagbuf);
484	type = np->n_vattr.va_mode & S_IFMT;
485	if (S_ISCHR(np->n_vattr.va_mode) || S_ISBLK(np->n_vattr.va_mode))
486		if (usenumflag ||
487		    ((name = devname(np->n_vattr.va_rdev, type)) == NULL))
488			(void)printf("   %2d,%-2d", major(np->n_vattr.va_rdev),
489			    minor(np->n_vattr.va_rdev));
490		else
491			(void)printf(" %7s", name);
492	else
493		(void)printf(" %7qd", np->n_size);
494	return (0);
495}
496
497/*
498 * Given a pointer to a mount structure in kernel space,
499 * read it in and return a usable pointer to it.
500 */
501struct mount *
502getmnt(struct mount *maddr)
503{
504	static struct mtab {
505		struct mtab *next;
506		struct mount *maddr;
507		struct mount mount;
508	} *mhead = NULL;
509	struct mtab *mt;
510
511	for (mt = mhead; mt != NULL; mt = mt->next)
512		if (maddr == mt->maddr)
513			return (&mt->mount);
514	if ((mt = malloc(sizeof(struct mtab))) == NULL)
515		err(1, "malloc: mount table");
516	KGETRET(maddr, &mt->mount, sizeof(struct mount), "mount table");
517	mt->maddr = maddr;
518	mt->next = mhead;
519	mhead = mt;
520	return (&mt->mount);
521}
522
523void
524mount_print(struct mount *mp)
525{
526	int flags;
527
528	(void)printf("*** MOUNT ");
529	(void)printf("%.*s %s on %s", MFSNAMELEN,
530	    mp->mnt_stat.f_fstypename, mp->mnt_stat.f_mntfromname,
531	    mp->mnt_stat.f_mntonname);
532	if ((flags = mp->mnt_flag)) {
533		char *comma = "(";
534
535		putchar(' ');
536		/* user visable flags */
537		if (flags & MNT_RDONLY) {
538			(void)printf("%srdonly", comma);
539			flags &= ~MNT_RDONLY;
540			comma = ",";
541		}
542		if (flags & MNT_SYNCHRONOUS) {
543			(void)printf("%ssynchronous", comma);
544			flags &= ~MNT_SYNCHRONOUS;
545			comma = ",";
546		}
547		if (flags & MNT_NOEXEC) {
548			(void)printf("%snoexec", comma);
549			flags &= ~MNT_NOEXEC;
550			comma = ",";
551		}
552		if (flags & MNT_NOSUID) {
553			(void)printf("%snosuid", comma);
554			flags &= ~MNT_NOSUID;
555			comma = ",";
556		}
557		if (flags & MNT_NODEV) {
558			(void)printf("%snodev", comma);
559			flags &= ~MNT_NODEV;
560			comma = ",";
561		}
562		if (flags & MNT_UNION) {
563			(void)printf("%sunion", comma);
564			flags &= ~MNT_UNION;
565			comma = ",";
566		}
567		if (flags & MNT_ASYNC) {
568			(void)printf("%sasync", comma);
569			flags &= ~MNT_ASYNC;
570			comma = ",";
571		}
572		if (flags & MNT_EXRDONLY) {
573			(void)printf("%sexrdonly", comma);
574			flags &= ~MNT_EXRDONLY;
575			comma = ",";
576		}
577		if (flags & MNT_EXPORTED) {
578			(void)printf("%sexport", comma);
579			flags &= ~MNT_EXPORTED;
580			comma = ",";
581		}
582		if (flags & MNT_DEFEXPORTED) {
583			(void)printf("%sdefdexported", comma);
584			flags &= ~MNT_DEFEXPORTED;
585			comma = ",";
586		}
587		if (flags & MNT_EXPORTANON) {
588			(void)printf("%sexportanon", comma);
589			flags &= ~MNT_EXPORTANON;
590			comma = ",";
591		}
592		if (flags & MNT_EXKERB) {
593			(void)printf("%sexkerb", comma);
594			flags &= ~MNT_EXKERB;
595			comma = ",";
596		}
597		if (flags & MNT_LOCAL) {
598			(void)printf("%slocal", comma);
599			flags &= ~MNT_LOCAL;
600			comma = ",";
601		}
602		if (flags & MNT_QUOTA) {
603			(void)printf("%squota", comma);
604			flags &= ~MNT_QUOTA;
605			comma = ",";
606		}
607		if (flags & MNT_ROOTFS) {
608			(void)printf("%srootfs", comma);
609			flags &= ~MNT_ROOTFS;
610			comma = ",";
611		}
612		if (flags & MNT_NOATIME) {
613			(void)printf("%snoatime", comma);
614			flags &= ~MNT_NOATIME;
615			comma = ",";
616		}
617		/* filesystem control flags */
618		if (flags & MNT_UPDATE) {
619			(void)printf("%supdate", comma);
620			flags &= ~MNT_UPDATE;
621			comma = ",";
622		}
623		if (flags & MNT_DELEXPORT) {
624			(void)printf("%sdelexport", comma);
625			flags &= ~MNT_DELEXPORT;
626			comma = ",";
627		}
628		if (flags & MNT_RELOAD) {
629			(void)printf("%sreload", comma);
630			flags &= ~MNT_RELOAD;
631			comma = ",";
632		}
633		if (flags & MNT_FORCE) {
634			(void)printf("%sforce", comma);
635			flags &= ~MNT_FORCE;
636			comma = ",";
637		}
638		if (flags & MNT_WANTRDWR) {
639			(void)printf("%swantrdwr", comma);
640			flags &= ~MNT_WANTRDWR;
641			comma = ",";
642		}
643		if (flags & MNT_SOFTDEP) {
644			(void)printf("%ssoftdep", comma);
645			flags &= ~MNT_SOFTDEP;
646			comma = ",";
647		}
648		if (flags)
649			(void)printf("%sunknown_flags:%x", comma, flags);
650		(void)printf(")");
651	}
652	(void)printf("\n");
653}
654
655struct e_vnode *
656loadvnodes(int *avnodes)
657{
658	int mib[2];
659	size_t copysize;
660	struct e_vnode *vnodebase;
661
662	if (memf != NULL) {
663		/*
664		 * do it by hand
665		 */
666		return (kinfo_vnodes(avnodes));
667	}
668	mib[0] = CTL_KERN;
669	mib[1] = KERN_VNODE;
670	if (sysctl(mib, 2, NULL, &copysize, NULL, 0) == -1)
671		err(1, "sysctl: KERN_VNODE");
672	if ((vnodebase = malloc(copysize)) == NULL)
673		err(1, "malloc: vnode table");
674	if (sysctl(mib, 2, vnodebase, &copysize, NULL, 0) == -1)
675		err(1, "sysctl: KERN_VNODE");
676	if (copysize % sizeof(struct e_vnode))
677		errx(1, "vnode size mismatch");
678	*avnodes = copysize / sizeof(struct e_vnode);
679
680	return (vnodebase);
681}
682
683/*
684 * simulate what a running kernel does in in kinfo_vnode
685 */
686struct e_vnode *
687kinfo_vnodes(int *avnodes)
688{
689	struct mntlist mountlist;
690	struct mount *mp, mount;
691	struct vnode *vp, vnode;
692	char *vbuf, *evbuf, *bp;
693	int mib[2], numvnodes;
694	size_t num;
695
696	if (kd == 0) {
697		mib[0] = CTL_KERN;
698		mib[1] = KERN_NUMVNODES;
699		num = sizeof(numvnodes);
700		if (sysctl(mib, 2, &numvnodes, &num, NULL, 0) < 0)
701			err(1, "sysctl(KERN_NUMVNODES) failed");
702	} else
703		KGET(V_NUMV, numvnodes);
704	if ((vbuf = malloc((numvnodes + 20) *
705	    (sizeof(struct vnode *) + sizeof(struct vnode)))) == NULL)
706		err(1, "malloc: vnode buffer");
707	bp = vbuf;
708	evbuf = vbuf + (numvnodes + 20) *
709	    (sizeof(struct vnode *) + sizeof(struct vnode));
710	KGET(V_MOUNTLIST, mountlist);
711	for (num = 0, mp = mountlist.cqh_first; ; mp = mount.mnt_list.cqe_next) {
712		KGET2(mp, &mount, sizeof(mount), "mount entry");
713		for (vp = mount.mnt_vnodelist.lh_first;
714		    vp != NULL; vp = vnode.v_mntvnodes.le_next) {
715			KGET2(vp, &vnode, sizeof(vnode), "vnode");
716			if ((bp + sizeof(struct vnode *) +
717			    sizeof(struct vnode)) > evbuf)
718				/* XXX - should realloc */
719				errx(1, "no more room for vnodes");
720			memmove(bp, &vp, sizeof(struct vnode *));
721			bp += sizeof(struct vnode *);
722			memmove(bp, &vnode, sizeof(struct vnode));
723			bp += sizeof(struct vnode);
724			num++;
725		}
726		if (mp == mountlist.cqh_last)
727			break;
728	}
729	*avnodes = num;
730	return ((struct e_vnode *)vbuf);
731}
732
733const char hdr[] =
734"   LINE RAW  CAN  OUT  HWT LWT    COL STATE      SESS  PGID DISC\n";
735
736void
737tty2itty(struct tty *tp, struct itty *itp)
738{
739	itp->t_dev = tp->t_dev;
740	itp->t_rawq_c_cc = tp->t_rawq.c_cc;
741	itp->t_canq_c_cc = tp->t_canq.c_cc;
742	itp->t_outq_c_cc = tp->t_outq.c_cc;
743	itp->t_hiwat = tp->t_hiwat;
744	itp->t_lowat = tp->t_lowat;
745	itp->t_column = tp->t_column;
746	itp->t_state = tp->t_state;
747	itp->t_session = tp->t_session;
748	if (tp->t_pgrp != NULL)
749		KGET2(&tp->t_pgrp->pg_id, &itp->t_pgrp_pg_id, sizeof(pid_t), "pgid");
750	itp->t_line = tp->t_line;
751}
752
753void
754ttymode(void)
755{
756	struct ttylist_head tty_head;
757	struct tty *tp, tty;
758	int mib[2], ntty, i;
759	struct itty itty, *itp;
760	size_t nlen;
761
762	if (kd == 0) {
763		mib[0] = CTL_KERN;
764		mib[1] = KERN_TTYCOUNT;
765		nlen = sizeof(ntty);
766		if (sysctl(mib, 2, &ntty, &nlen, NULL, 0) < 0)
767			err(1, "sysctl(KERN_TTYCOUNT) failed");
768	} else
769		KGET(TTY_NTTY, ntty);
770	(void)printf("%d terminal device%s\n", ntty, ntty == 1 ? "" : "s");
771	(void)printf("%s", hdr);
772	if (kd == 0) {
773		mib[0] = CTL_KERN;
774		mib[1] = KERN_TTY;
775		mib[2] = KERN_TTY_INFO;
776		nlen = ntty * sizeof(struct itty);
777		if ((itp = malloc(nlen)) == NULL)
778			err(1, "malloc");
779		if (sysctl(mib, 3, itp, &nlen, NULL, 0) < 0)
780			err(1, "sysctl(KERN_TTY_INFO) failed");
781		for (i = 0; i < ntty; i++)
782			ttyprt(&itp[i]);
783		free(itp);
784	} else {
785		KGET(TTY_TTYLIST, tty_head);
786		for (tp = tty_head.tqh_first; tp; tp = tty.tty_link.tqe_next) {
787			KGET2(tp, &tty, sizeof tty, "tty struct");
788			tty2itty(&tty, &itty);
789			ttyprt(&itty);
790		}
791	}
792}
793
794struct {
795	int flag;
796	char val;
797} ttystates[] = {
798	{ TS_WOPEN,	'W'},
799	{ TS_ISOPEN,	'O'},
800	{ TS_CARR_ON,	'C'},
801	{ TS_TIMEOUT,	'T'},
802	{ TS_FLUSH,	'F'},
803	{ TS_BUSY,	'B'},
804	{ TS_ASLEEP,	'A'},
805	{ TS_XCLUDE,	'X'},
806	{ TS_TTSTOP,	'S'},
807	{ TS_TBLOCK,	'K'},
808	{ TS_ASYNC,	'Y'},
809	{ TS_BKSL,	'D'},
810	{ TS_ERASE,	'E'},
811	{ TS_LNCH,	'L'},
812	{ TS_TYPEN,	'P'},
813	{ TS_CNTTB,	'N'},
814	{ 0,		'\0'},
815};
816
817void
818ttyprt(struct itty *tp)
819{
820	char *name, state[20];
821	int i, j;
822
823	if (usenumflag || (name = devname(tp->t_dev, S_IFCHR)) == NULL)
824		(void)printf("%2d,%-3d   ", major(tp->t_dev), minor(tp->t_dev));
825	else
826		(void)printf("%7s ", name);
827	(void)printf("%3d %4d ", tp->t_rawq_c_cc, tp->t_canq_c_cc);
828	(void)printf("%4d %4d %3d %6d ", tp->t_outq_c_cc,
829		tp->t_hiwat, tp->t_lowat, tp->t_column);
830	for (i = j = 0; ttystates[i].flag; i++)
831		if (tp->t_state&ttystates[i].flag)
832			state[j++] = ttystates[i].val;
833	if (j == 0)
834		state[j++] = '-';
835	state[j] = '\0';
836	(void)printf("%-6s %8lx", state, (u_long)tp->t_session & ~KERNBASE);
837	(void)printf("%6d ", tp->t_pgrp_pg_id);
838	switch (tp->t_line) {
839	case TTYDISC:
840		(void)printf("term\n");
841		break;
842	case TABLDISC:
843		(void)printf("tab\n");
844		break;
845	case SLIPDISC:
846		(void)printf("slip\n");
847		break;
848	case PPPDISC:
849		(void)printf("ppp\n");
850		break;
851	case STRIPDISC:
852		(void)printf("strip\n");
853		break;
854	default:
855		(void)printf("%d\n", tp->t_line);
856		break;
857	}
858}
859
860void
861filemode(void)
862{
863	struct file fp, *ffp, *addr;
864	char *buf, flagbuf[16], *fbp;
865	static char *dtypes[] = { "???", "inode", "socket" };
866	int mib[2], maxfile, nfile;
867	size_t len;
868
869	if (kd == 0) {
870		mib[0] = CTL_KERN;
871		mib[1] = KERN_MAXFILES;
872		len = sizeof(maxfile);
873		if (sysctl(mib, 2, &maxfile, &len, NULL, 0) < 0)
874			err(1, "sysctl(KERN_MAXFILES) failed");
875		if (totalflag) {
876			mib[0] = CTL_KERN;
877			mib[1] = KERN_NFILES;
878			len = sizeof(nfile);
879			if (sysctl(mib, 2, &nfile, &len, NULL, 0) < 0)
880				err(1, "sysctl(KERN_NFILES) failed");
881		}
882	} else {
883		KGET(FNL_MAXFILE, maxfile);
884		if (totalflag) {
885			KGET(FNL_NFILE, nfile);
886			(void)printf("%3d/%3d files\n", nfile, maxfile);
887			return;
888		}
889	}
890
891	if (getfiles(&buf, &len) == -1)
892		return;
893	/*
894	 * Getfiles returns in malloc'd memory a pointer to the first file
895	 * structure, and then an array of file structs (whose addresses are
896	 * derivable from the previous entry).
897	 */
898	addr = ((struct filelist *)buf)->lh_first;
899	ffp = (struct file *)(buf + sizeof(struct filelist));
900	nfile = (len - sizeof(struct filelist)) / sizeof(struct file);
901
902	(void)printf("%d/%d open files\n", nfile, maxfile);
903
904	(void)printf("%*s TYPE       FLG  CNT  MSG  %*s  OFFSET\n",
905	    8, "LOC", 8, "DATA");
906	for (; (char *)ffp < buf + len; addr = ffp->f_list.le_next, ffp++) {
907		memmove(&fp, ffp, sizeof fp);
908		if ((unsigned)fp.f_type > DTYPE_SOCKET)
909			continue;
910		(void)printf("%lx ", (long)addr);
911		(void)printf("%-8.8s", dtypes[fp.f_type]);
912		fbp = flagbuf;
913		if (fp.f_flag & FREAD)
914			*fbp++ = 'R';
915		if (fp.f_flag & FWRITE)
916			*fbp++ = 'W';
917		if (fp.f_flag & FAPPEND)
918			*fbp++ = 'A';
919#ifdef FSHLOCK	/* currently gone */
920		if (fp.f_flag & FSHLOCK)
921			*fbp++ = 'S';
922		if (fp.f_flag & FEXLOCK)
923			*fbp++ = 'X';
924#endif
925		if (fp.f_flag & FASYNC)
926			*fbp++ = 'I';
927		*fbp = '\0';
928		(void)printf("%6s  %3ld", flagbuf, fp.f_count);
929		(void)printf("  %3ld", fp.f_msgcount);
930		(void)printf("  %8.1lx", (long)fp.f_data);
931
932		if (fp.f_offset < 0)
933			(void)printf("  %llx\n", (long long)fp.f_offset);
934		else
935			(void)printf("  %lld\n", (long long)fp.f_offset);
936	}
937	free(buf);
938}
939
940int
941getfiles(char **abuf, size_t *alen)
942{
943	size_t len;
944	int mib[2];
945	char *buf;
946
947	/*
948	 * XXX
949	 * Add emulation of KINFO_FILE here.
950	 */
951	if (memf != NULL)
952		errx(1, "files on dead kernel, not implemented");
953
954	mib[0] = CTL_KERN;
955	mib[1] = KERN_FILE;
956	if (sysctl(mib, 2, NULL, &len, NULL, 0) == -1) {
957		warn("sysctl: KERN_FILE");
958		return (-1);
959	}
960	if ((buf = malloc(len)) == NULL)
961		err(1, "malloc: KERN_FILE");
962	if (sysctl(mib, 2, buf, &len, NULL, 0) == -1) {
963		warn("sysctl: KERN_FILE");
964		return (-1);
965	}
966	*abuf = buf;
967	*alen = len;
968	return (0);
969}
970
971/*
972 * swapmode is based on a program called swapinfo written
973 * by Kevin Lahey <kml@rokkaku.atl.ga.us>.
974 */
975void
976swapmode(void)
977{
978	char *header;
979	int hlen = 10, nswap, rnswap;
980	int div, i, avail, nfree, npfree, used;
981	long blocksize;
982	struct swapent *swdev;
983
984	if (kflag) {
985		header = "1K-blocks";
986		blocksize = 1024;
987		hlen = strlen(header);
988	} else
989		header = getbsize(&hlen, &blocksize);
990
991	nswap = swapctl(SWAP_NSWAP, 0, 0);
992	if (nswap == 0) {
993		if (!totalflag)
994			(void)printf("%-11s %*s %8s %8s %8s  %s\n",
995			    "Device", hlen, header,
996			    "Used", "Avail", "Capacity", "Priority");
997		(void)printf("%-11s %*d %8d %8d %5.0f%%\n",
998		    "Total", hlen, 0, 0, 0, 0.0);
999		return;
1000	}
1001	if ((swdev = malloc(nswap * sizeof(*swdev))) == NULL)
1002		err(1, "malloc");
1003	rnswap = swapctl(SWAP_STATS, swdev, nswap);
1004
1005	if (!totalflag)
1006		(void)printf("%-11s %*s %8s %8s %8s  %s\n",
1007		    "Device", hlen, header,
1008		    "Used", "Avail", "Capacity", "Priority");
1009
1010	/* Run through swap list, doing the funky monkey. */
1011	div = blocksize / DEV_BSIZE;
1012	avail = nfree = npfree = 0;
1013	for (i = 0; i < nswap; i++) {
1014		int xsize, xfree;
1015
1016		if (!(swdev[i].se_flags & SWF_ENABLE))
1017			continue;
1018
1019		if (!totalflag) {
1020			if (usenumflag)
1021				(void)printf("%2d,%-2d       %*d ",
1022				    major(swdev[i].se_dev),
1023				    minor(swdev[i].se_dev),
1024				    hlen, swdev[i].se_nblks / div);
1025			else
1026				(void)printf("%-11s %*d ", swdev[i].se_path,
1027				    hlen, swdev[i].se_nblks / div);
1028		}
1029
1030		xsize = swdev[i].se_nblks;
1031		used = swdev[i].se_inuse;
1032		xfree = xsize - used;
1033		nfree += (xsize - used);
1034		npfree++;
1035		avail += xsize;
1036		if (totalflag)
1037			continue;
1038		(void)printf("%8d %8d %5.0f%%    %d\n",
1039		    used / div, xfree / div,
1040		    (double)used / (double)xsize * 100.0,
1041		    swdev[i].se_priority);
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",
1051		    used / (1048576 / DEV_BSIZE),
1052		    avail / (1048576 / DEV_BSIZE));
1053		return;
1054	}
1055	if (npfree > 1) {
1056		(void)printf("%-11s %*d %8d %8d %5.0f%%\n",
1057		    "Total", hlen, avail / div, used / div, nfree / div,
1058		    (double)used / (double)avail * 100.0);
1059	}
1060
1061	free(swdev);
1062}
1063
1064void
1065usage(void)
1066{
1067	(void)fprintf(stderr,
1068	    "usage: pstat [-Tfknstv] [-M core] [-N system]\n");
1069	exit(1);
1070}
1071