githubmirror/lsof

dialects/freebsd/dnode.c
1 714 строк36 KB
Masatake YAMATO
Import the final source tree published by Vic, the original lsof maintainer.
23 июл 2018, 06:45
23 июл 2018, 06:458662085
/*
 * dnode.c - FreeBSD node functions for lsof
 */


/*
 * Copyright 1994 Purdue Research Foundation, West Lafayette, Indiana
 * 47907.  All rights reserved.
 *
 * Written by Victor A. Abell
 *
 * This software is not subject to any license of the American Telephone
 * and Telegraph Company or the Regents of the University of California.
 *
 * Permission is granted to anyone to use this software for any purpose on
 * any computer system, and to alter it and redistribute it freely, subject
 * to the following restrictions:
 *
 * 1. Neither the authors nor Purdue University are responsible for any
 *    consequences of the use of this software.
 *
 * 2. The origin of this software must not be misrepresented, either by
 *    explicit claim or by omission.  Credit to the authors and Purdue
 *    University must appear in documentation and sources.
 *
 * 3. Altered versions must be plainly marked as such, and must not be
 *    misrepresented as being the original software.
 *
 * 4. This notice may not be removed or altered.
 */

#ifndef lint
static char copyright[] =
"@(#) Copyright 1994 Purdue Research Foundation.\nAll rights reserved.\n";
static char *rcsid = "$Id: dnode.c,v 1.45 2018/02/14 14:26:03 abe Exp $";
#endif


#include "lsof.h"

#if	defined(HAS_LOCKF_ENTRY)
#include "./lockf_owner.h"
#endif	/* defined(HAS_LOCKF_ENTRY) */

#if	defined(HAS_ZFS)
#include "dzfs.h"
#endif	/* defined(HAS_ZFS) */


#if	defined(HASFDESCFS) && HASFDESCFS==1
_PROTOTYPE(static int lkup_dev_tty,(dev_t *dr, INODETYPE *ir));
#endif	/* defined(HASFDESCFS) && HASFDESCFS==1 */


#if	defined(HASPTSFN) && defined(DTYPE_PTS)
#include <sys/tty.h>
#endif	/* defined(HASPTSFN) && defined(DTYPE_PTS) */


#if	defined(HAS_TMPFS)
#define	_KERNEL
#include <fs/tmpfs/tmpfs.h>
#undef	_KERNEL
#endif	/* defined(HAS_TMPFS) */

_PROTOTYPE(static void get_lock_state,(KA_T f));


/*
 * get_lock_state() - get the lock state
 */

static void
get_lock_state(f)
	KA_T f;				/* inode's lock pointer */
{
	struct lockf lf;		/* lockf structure */
	int lt;				/* lock type */

#if	defined(HAS_LOCKF_ENTRY)
	struct lockf_entry le;		/* lock_entry structure */
	KA_T lef, lep;			/* lock_entry pointers */
	struct lock_owner lo;		/* lock owner structure */

	if (!f || kread(f, (char *)&lf, sizeof(lf)))
	    return;
	if (!(lef = (KA_T)lf.ls_active.lh_first))
	    return;
	lep = lef;
	do {
	   if (kread(lep, (char *)&le, sizeof(le)))
		return;
	    if (!le.lf_owner
	    ||  kread((KA_T)le.lf_owner, (char *)&lo, sizeof(lo)))
		continue;
	    if (lo.lo_pid == (pid_t)Lp->pid) {
		if (le.lf_start == (off_t)0
		&&  le.lf_end == 0x7fffffffffffffffLL)
		    lt = 1;
		else
		    lt = 0;
		if (le.lf_type == F_RDLCK)
		    Lf->lock = lt ? 'R' : 'r';
		else if (le.lf_type == F_WRLCK)
		    Lf->lock = lt ? 'W' : 'w';
		else if (le.lf_type == (F_RDLCK | F_WRLCK))
		    Lf->lock = 'u';
		return;
	    }
	} while ((lep = (KA_T)le.lf_link.le_next) && (lep != lef));
#else	/* !defined(HAS_LOCKF_ENTRY) */

	unsigned char l;		/* lock status */
	KA_T lfp;			/* lockf structure pointer */

	if ((lfp = f)) {

	/*
	 * Determine the lock state.
	 */
	    do {
		if (kread(lfp, (char *)&lf, sizeof(lf)))
		    break;
		l = 0;
		switch (lf.lf_flags & (F_FLOCK|F_POSIX)) {
		case F_FLOCK:
		    if (Cfp && (struct file *)lf.lf_id == Cfp)
			l = 1;
		    break;
		case F_POSIX:

# if	defined(P_ADDR)
		    if ((KA_T)lf.lf_id == Kpa)
			l = 1;
# endif	/* defined(P_ADDR) */

		    break;
		}
		if (!l)
		    continue;
		if (lf.lf_start == (off_t)0
		&&  lf.lf_end == 0xffffffffffffffffLL)
		    lt = 1;
		else
		    lt = 0;
		if (lf.lf_type == F_RDLCK)
		    Lf->lock = lt ? 'R' : 'r';
		else if (lf.lf_type == F_WRLCK)
		    Lf->lock = lt ? 'W' : 'w';
		else if (lf.lf_type == (F_RDLCK | F_WRLCK))
		    Lf->lock = 'u';
		break;
	    } while ((lfp = (KA_T)lf.lf_next) && (lfp != f));
   	}
#endif	/* defined(HAS_LOCKF_ENTRY) */

}


#if	FREEBSDV>=2000
# if	defined(HASPROCFS)
_PROTOTYPE(static void getmemsz,(pid_t pid));


/*
 * getmemsz() - get memory size of a /proc/<n>/mem entry
 */

static void
getmemsz(pid)
	pid_t pid;
{
	int n;
	struct kinfo_proc *p;
	struct vmspace vm;

	for (n = 0, p = P; n < Np; n++, p++) {
	    if (p->P_PID == pid) {
		if (!p->P_VMSPACE
		||  kread((KA_T)p->P_VMSPACE, (char *)&vm, sizeof(vm)))
		    return;
		Lf->sz = (SZOFFTYPE)ctob(vm.vm_tsize+vm.vm_dsize+vm.vm_ssize);
		Lf->sz_def = 1;
		return;
	    }
	}
}
# endif	/* defined(HASPROCFS) */
#endif	/* FREEBSDV>=2000 */


#if	defined(HASFDESCFS) && HASFDESCFS==1
/*
 * lkup_dev_tty() - look up /dev/tty
 */

static int
lkup_dev_tty(dr, ir)
	dev_t *dr;			/* place to return device number */
	INODETYPE *ir;			/* place to return inode number */
{
	int i;

	readdev(0);

# if	defined(HASDCACHE)

lkup_dev_tty_again:

# endif	/* defined(HASDCACHE) */

	for (i = 0; i < Ndev; i++) {
	    if (strcmp(Devtp[i].name, "/dev/tty") == 0) {

# if	defined(HASDCACHE)
		if (DCunsafe && !Devtp[i].v && !vfy_dev(&Devtp[i]))
		    goto lkup_dev_tty_again;
# endif	/* defined(HASDCACHE) */

		*dr = Devtp[i].rdev;
		*ir = Devtp[i].inode;
		return(1);
	    }
	}

# if	defined(HASDCACHE)
	if (DCunsafe) {
	    (void) rereaddev();
	    goto lkup_dev_tty_again;
	}
# endif	/* defined(HASDCACHE) */

	return(-1);
}
#endif	/* defined(HASFDESCFS) && HASFDESCFS==1 */


#if	defined(HASKQUEUE)
/*
 * process_kqueue() - process kqueue file
 *
 * Strictly speaking this function should appear in dfile.c, because it is
 * a file processing function.  However, the Net and Open BSD sources don't
 * require a dfile.c, so this is the next best location for the function.
 */

void
process_kqueue(ka)
	KA_T ka;			/* kqueue file structure address */
{
	struct kqueue kq;		/* kqueue structure */

	(void) snpf(Lf->type, sizeof(Lf->type), "KQUEUE");
	enter_dev_ch(print_kptr(ka, (char *)NULL, 0));
	if (!ka || kread(ka, (char *)&kq, sizeof(kq)))
	    return;
	(void) snpf(Namech, Namechl, "count=%d, state=%#x", kq.kq_count,
	    kq.kq_state);
	enter_nm(Namech);
}
#endif	/* defined(HASKQUEUE) */


/*
 * process_node() - process vnode
 */

void
process_node(va)
	KA_T va;			/* vnode kernel space address */
{
	dev_t dev, rdev;
	unsigned char devs;
	unsigned char rdevs;
	char dev_ch[32], *ep;
	struct inode *i;
	struct nfsnode *n;
	size_t sz;
	char *ty;
	unsigned char ums;
	enum vtype type;
	struct vnode *v, vb;
	struct l_vfs *vfs;

#if	FREEBSDV>=2000
	struct inode ib;
	struct nfsnode nb;
# if	FREEBSDV>=4000
#  if	FREEBSDV<5000
	struct specinfo si;
#  else	/* FREEBSDV>=5000 */
#   if	!defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV)
	struct cdev si;
#   endif	/* !defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV) */
#  endif	/* FREEBSDV<5000 */
# endif	/* FREEBSDV>=4000 */
#endif	/* FREEBSDV>=2000 */

#if	FREEBSDV<5000
	struct mfsnode *m;
# if	FREEBSDV>=2000
	struct mfsnode mb;
# endif	/* FREEBSDV>=2000 */
#endif	/* FREEBSDV<5000 */

#if	defined(HAS9660FS)
	dev_t iso_dev;
	int iso_dev_def, iso_stat;
	INODETYPE iso_ino;
	long iso_links;
	SZOFFTYPE iso_sz;
#endif	/* defined(HAS9660FS) */

#if	defined(HASFDESCFS)
	struct fdescnode *f;

# if	HASFDESCFS==1
	static dev_t f_tty_dev;
	static INODETYPE f_tty_ino;
	static int f_tty_s = 0;
# endif	/* HASFDESCFS==1 */

# if	FREEBSDV>=2000
	struct fdescnode fb;
# endif	/* FREEBSDV>=2000 */

#endif	/* defined(HASFDESCFS) */

#if	defined(HASFUSEFS)
	dev_t fuse_dev;
	int fuse_dev_def, fuse_stat;
	INODETYPE fuse_ino;
	long fuse_links;
	SZOFFTYPE fuse_sz;
#endif	/* defined(HASFUSEFS) */

#if	FREEBSDV>=5000
# if	defined(HAS_UFS1_2)
	int ufst;
	struct ufsmount um;
	struct ufs1_dinode d1;
	struct ufs2_dinode d2;
# endif	/* !defined(HAS_UFS1_2) */

# if	!defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV)
	struct cdev cd;
# endif	/* !defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV) */

	int cds;
	struct devfs_dirent de;
	struct devfs_dirent *d;
	char vtbuf[32];
	char *vtbp;
	enum vtagtype { VT_DEVFS, VT_FDESC, VT_FUSEFS, VT_ISOFS, VT_PSEUDOFS,
			VT_NFS, VT_NULL, VT_TMPFS, VT_UFS, VT_ZFS, VT_UNKNOWN
		      };

# if	defined(HAS_TMPFS)
	struct tmpfs_node tn;
	struct tmpfs_node *tnp;
# endif	/* defined(HAS_TMPFS) */
#endif	/* FREEBSDV>=5000 */

#if	defined(HASNULLFS)
# if	!defined(HASPRINTDEV)
	char dbuf[32];
# endif	/* !defined(HASPRINTDEV) */
	char *dp, *np, tbuf[1024];
	struct null_node nu;
	int sc = 0;
#endif	/* defined(HASNULLFS) */

#if	defined(HASPROCFS)
	struct pfsnode *p;
	struct procfsid *pfi;
	static int pgsz = -1;
	struct vmspace vm;

# if	FREEBSDV>=2000
	struct pfsnode pb;
# endif	/* FREEBSDV>=2000 */
#endif	/* defined(HASPROCFS) */

#if	defined(HASPSEUDOFS) 
	struct pfs_node pn;
	struct pfs_node *pnp;
#endif	/* defined(HASPSEUDOFS) */

#if	defined(HAS_ZFS)
	zfs_info_t *z = (zfs_info_t *)NULL;
	zfs_info_t zi;
	char *zm = (char *)NULL;
#else	/* !defined(HAS_ZFS) */
	static unsigned char zw = 0;
#endif	/* HAS_VFS */

	enum vtagtype vtag;			/* placed here to use the
						 * artificial vtagtype
						 * definition required for
						 * FREEBSDV>=5000 */

#if	defined(HASNULLFS)

process_overlaid_node:

	if (++sc > 1024) {
	    (void) snpf(Namech, Namechl, "too many overlaid nodes");
	    enter_nm(Namech);
	    return;
	}
#endif	/* defined(HASNULLFS) */

/*
 * Initialize miscellaneous variables.  This is done so that processing an
 * overlaid node will be a fresh start.
 */
	devs = rdevs = ums = 0;
	i = (struct inode *)NULL;
	n = (struct nfsnode *)NULL;
	Namech[0] = '\0';

#if	defined(HAS9660FS)
	iso_dev_def = iso_stat = 0;
#endif	/* defined(HAS9660FS) */

#if	defined(HASFDESCFS)
	f = (struct fdescnode *)NULL;
#endif	/* defined(HASFDESCFS) */

#if	defined(HASFUSEFS)
	fuse_dev_def = fuse_stat = 0;
#endif	/* defined(HASFUSEFS) */

#if	FREEBSDV<5000
	m = (struct mfsnode *)NULL;
#else	/* FREEBSDV>=5000 */
	cds = 0;
	d = (struct devfs_dirent *)NULL;
# if	defined(HAS_UFS1_2)
	ufst = 0;
# endif	/* !defined(HAS_UFS1_2) */
#endif	/* FREEBSDV<5000 */

#if	defined(HASPROCFS)
	p = (struct pfsnode *)NULL;
#endif	/* defined(HASPROCFS) */

#if	defined(HASPSEUDOFS) 
	pnp = (struct pfs_node *)NULL;
#endif	/* defined(HASPSEUDOFS) */

# if	defined(HAS_TMPFS)
	tnp = (struct tmpfs_node *)NULL;
# endif	/* defined(HAS_TMPFS) */


#if	defined(HAS_ZFS)
	z = (zfs_info_t *)NULL;
	zm = (char *)NULL;
#endif	/* defined(HAS_ZFS) */

/*
 * Read the vnode.
 */
	if ( ! va) {
	    enter_nm("no vnode address");
	    return;
	}
	v = &vb;
	if (readvnode(va, v)) {
	    enter_nm(Namech);
	    return;
	}

#if	defined(HASNCACHE)
	Lf->na = va;
# if	defined(HASNCVPID)
	Lf->id = v->v_id;
# endif	/* defined(HASNCVPID) */
#endif	/* defined(HASNCACHE) */

#if	defined(HASFSTRUCT)
	Lf->fna = va;
	Lf->fsv |= FSV_NI;
#endif	/* defined(HASFSTRUCT) */

/*
 * Get the vnode type.
 */
	if (!v->v_mount)
	    vfs = (struct l_vfs *)NULL;
	else {
	    vfs = readvfs((KA_T)v->v_mount);
	    if (vfs) {

#if	defined(MOUNT_NONE)
		switch (vfs->type) {
		case MOUNT_NFS:
		    Ntype = N_NFS;
		    break;

# if	defined(HASPROCFS)
		case MOUNT_PROCFS:
		    Ntype = N_PROC;
		    break;
# endif	/* defined(HASPROCFS) */
		}
#else	/* !defined(MOUNT_NONE) */
		if (strcasecmp(vfs->typnm, "nfs") == 0)
		    Ntype = N_NFS;

# if	defined(HASPROCFS)
		else if (strcasecmp(vfs->typnm, "procfs") == 0)
		    Ntype = N_PROC;
# endif	/* defined(HASPROCFS) */

# if	defined(HASPSEUDOFS)
		else if (strcasecmp(vfs->typnm, "pseudofs") == 0)
		    Ntype = N_PSEU;
# endif	/* defined(HASPSEUDOFS) */

# if	defined(HAS_TMPFS)
		else if (strcasecmp(vfs->typnm, "tmpfs") == 0)
		    Ntype = N_TMP;
# endif	/* defined(HAS_TMPFS) */
#endif	/* defined(MOUNT_NONE) */

	    }
	}
	if (Ntype == N_REGLR) {
	    switch (v->v_type) {
	    case VFIFO:
		Ntype = N_FIFO;
		break;
	    default:
		break;
	    }
	}

#if	FREEBSDV>=5000
/*
 * For FreeBSD 5 and above VCHR and VBLK vnodes get the v_rdev structure.
 */
	if (((v->v_type == VCHR) || (v->v_type == VBLK))
	&&  v->v_rdev

# if	!defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV)
	&&  !kread((KA_T)v->v_rdev, (char *)&cd, sizeof(cd))
# endif	/* !defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV) */

	) {
	    cds = 1;
	}
#endif	/* FREEBSDV>=5000 */

/*
 * Define the specific node pointer.
 */

#if	FREEBSDV>=5000
/*
 * Get the pseudo vnode tag type for FreeBSD >= 5.
 */
	vtag = VT_UNKNOWN;
	if (v->v_tag && !kread((KA_T)v->v_tag, (char *)&vtbuf, sizeof(vtbuf)))
	{
	    vtbuf[sizeof(vtbuf) - 1] = '\0';
	    vtbp = vtbuf;
	    if (!strcmp(vtbuf, "ufs"))
		vtag = VT_UFS;
	    else if (!strcmp(vtbuf, "zfs")) {

#if	!defined(HAS_ZFS)
		if (!Fwarn && !zw) {
		    (void) fprintf(stderr,
			"%s: WARNING: no ZFS support has been defined.\n",
			Pn);
		    (void) fprintf(stderr,
			"      See 00FAQ for more information.\n");
		    zw = 1;
		}
#else	/* defined(HAS_ZFS) */
		vtag = VT_ZFS;
#endif	/* !defined(HAS_ZFS) */

	    } else if (!strcmp(vtbuf, "devfs"))
		vtag = VT_DEVFS;
	    else if (!strcmp(vtbuf, "nfs"))
		vtag = VT_NFS;
	    else if (!strcmp(vtbuf, "newnfs"))
		vtag = VT_NFS;
	    else if (!strcmp(vtbuf, "oldnfs"))
		vtag = VT_NFS;
	    else if (!strcmp(vtbuf, "isofs"))
		vtag = VT_ISOFS;
	    else if (!strcmp(vtbuf, "pseudofs"))
		vtag = VT_PSEUDOFS;
	    else if (!strcmp(vtbuf, "nullfs"))
		vtag = VT_NULL;
	    else if (!strcmp(vtbuf, "null"))
		vtag = VT_NULL;
	    else if (!strcmp(vtbuf, "fdesc"))
		vtag = VT_FDESC;
	    else if (!strcmp(vtbuf, "fuse"))
		vtag = VT_FUSEFS;
	    else if (!strcmp(vtbuf, "tmpfs"))
		vtag = VT_TMPFS;
	} else
	    vtbp = "(unknown)";
#else	/* FREEBSDV<5000 */
	vtag = v->v_tag;
#endif	/* FREEBSDV>=5000 */

	switch (vtag) {

#if	FREEBSDV>=5000
	case VT_DEVFS:
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&de, sizeof(de)))
	    {
		(void) snpf(Namech, Namechl, "no devfs node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    d = &de;
	    if (v->v_type == VDIR) {
		if (!d->de_dir
		||  kread((KA_T)d->de_dir, (char *)&de, sizeof(de))) {
		    (void) snpf(Namech, Namechl, "no devfs dir node: %s",
			print_kptr((KA_T)d->de_dir, (char *)NULL, 0));
		    enter_nm(Namech);
		    return;
		}
	    }
	    break;
#endif	/* FREEBSDV>=5000 */

#if	defined(HASFDESCFS)
	case VT_FDESC:

# if	FREEBSDV<2000
	    f = (struct fdescnode *)v->v_data;
# else	/* FREEBSDV>=2000 */
	    if (kread((KA_T)v->v_data, (char *)&fb, sizeof(fb)) != 0) {
		(void) snpf(Namech, Namechl, "can't read fdescnode at: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    f = &fb;
	    break;
# endif	/* FREEBSDV<2000 */
#endif	/* defined(HASFDESCFS) */

#if	defined(HASFUSEFS)
	case VT_FUSEFS:
	    if (read_fuse_node(v, &fuse_dev, &fuse_dev_def, &fuse_ino,
			       &fuse_links, &fuse_sz))
	    {
		(void) snpf(Namech, Namechl, "no fuse node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    fuse_stat = 1;
	    break;
#endif	/* defined(HASFUSEFS) */

#if	defined(HAS9660FS)
	case VT_ISOFS:
	    if (read_iso_node(v, &iso_dev, &iso_dev_def, &iso_ino, &iso_links,
			      &iso_sz))
	    {
		(void) snpf(Namech, Namechl, "no iso node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    iso_stat = 1;
	    break;
#endif	/* defined(HAS9660FS) */

#if	FREEBSDV<5000
	case VT_MFS:

# if	FREEBSDV<2000
	    m = (struct mfsnode *)v->v_data;
# else	/* FREEBSDV>=2000 */
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&mb, sizeof(mb))) {
		(void) snpf(Namech, Namechl, "no mfs node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    m = &mb;
# endif	/* FREEBSDV<2000 */
#endif	/* FREEBSDV<5000 */

	    break;
	case VT_NFS:

#if	FREEBSDV<2000
	    n = (struct nfsnode *)v->v_data;
#else	/* FREEBSDV>=2000 */
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&nb, sizeof(nb))) {
		(void) snpf(Namech, Namechl, "no nfs node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    n = &nb;
#endif	/* FREEBSDV<2000 */

	    break;

#if	defined(HASNULLFS)
	case VT_NULL:
	    if (sc == 1) {

	    /*
	     * If this is the first null_node, enter a name addition containing
	     * the mounted-on directory, the file system name, and the device
	     * number.
	     */
		if (vfs && (vfs->dir || vfs->fsname || vfs->fsid.val[0])) {
		    if (vfs->fsid.val[0]) {

#if	defined(HASPRINTDEV)
			dp = HASPRINTDEV(Lf, &dev);
#else	/* !defined(HASPRINTDEV) */
			(void) snpf(dbuf, sizeof(dbuf) - 1, "%d,%d",
			    GET_MAJ_DEV(dev), GET_MIN_DEV(dev));
			dbuf[sizeof(dbuf) - 1] = '\0';
			dp = dbuf;
#endif	/* defined(HASPRINTDEV) */

		    } else
			dp = (char *)NULL;
		    (void) snpf(tbuf, sizeof(tbuf) - 1,
			"(nullfs%s%s%s%s%s%s%s)",
			(vfs && vfs->fsname) ? " " : "",
			(vfs && vfs->fsname) ? vfs->fsname : "",
			(vfs && vfs->dir) ? " on " : "",
			(vfs && vfs->dir) ? vfs->dir : "",
			(dp && vfs && vfs->dir) ? " (" : "",
			(dp && vfs && vfs->dir) ? dp : "",
			(dp && vfs && vfs->dir) ? ")" : "");
		    tbuf[sizeof(tbuf) - 1] = '\0';
		    np = tbuf;
		} else
		    np = "(nullfs)";
		(void) add_nma(np, (int)strlen(np));
	    }
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&nu, sizeof(nu))) {
		(void) snpf(Namech, Namechl, "can't read null_node at: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    if (!nu.null_lowervp) {
		(void) snpf(Namech, Namechl, "null_node overlays nothing");
		enter_nm(Namech);
		return;
	    }
	    va = (KA_T)nu.null_lowervp;
	    goto process_overlaid_node;
#endif	/* defined(HASNULLFS) */

#if	defined(HASPROCFS)
	case VT_PROCFS:

# if	FREEBSDV<2000
	    p = (struct pfsnode *)v->v_data;
# else	/* FREEBSDV>=2000 */
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&pb, sizeof(pb))) {
		(void) snpf(Namech, Namechl, "no pfs node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    p = &pb;
# endif	/* FREEBSDV<2000 */

	    break;
#endif	/* defined(HASPROCFS) */

#if	defined(HASPSEUDOFS)
	case VT_PSEUDOFS:
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&pn, sizeof(pn))) {
		(void) snpf(Namech, Namechl, "no pfs_node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    pnp = &pn;
	    break;
#endif	/* defined(HASPSEUDOFS) */

# if	defined(HAS_TMPFS)
	case VT_TMPFS:
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&tn, sizeof(tn))) {
		(void) snpf(Namech, Namechl, "no tmpfs_node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    tnp = &tn;
	    break;
# endif	/* defined(HAS_TMPFS) */

	case VT_UFS:

#if	FREEBSDV<2000
	    i = (struct inode *)v->v_data;
#else	/* FREEBSDV>=2000 */
	    if (!v->v_data
	    ||  kread((KA_T)v->v_data, (char *)&ib, sizeof(ib))) {
		(void) snpf(Namech, Namechl, "no ufs node: %s",
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    i = &ib;

# if	defined(HAS_UFS1_2)
	    if (i->i_ump && !kread((KA_T)i->i_ump, (char *)&um, sizeof(um))) {
		ums =  1;
		if (um.um_fstype == UFS1) {
		    if (i->i_din1
		    &&  !kread((KA_T)i->i_din1, (char *)&d1, sizeof(d1)))
			ufst = 1;
		} else {
		    if (i->i_din2
		    &&  !kread((KA_T)i->i_din2, (char *)&d2, sizeof(d2)))
			ufst = 2;
		}
	    }
# endif	/* defined(HAS_UFS1_2) */
#endif	/* FREEBSDV<2000 */

#if	defined(HAS_V_LOCKF)
	    if (v->v_lockf)
		(void) get_lock_state((KA_T)v->v_lockf);
#else	/* !defined(HAS_V_LOCKF) */
	    if (i->i_lockf)
		(void) get_lock_state((KA_T)i->i_lockf);
#endif	/* defined(HAS_V_LOCKF) */

	    break;

#if	defined(HAS_ZFS)
	case VT_ZFS:
	    memset((void *)&zi, 0, sizeof(zfs_info_t));
	    if (!v->v_data
	    ||  (zm = readzfsnode((KA_T)v->v_data, &zi,
				  ((v->v_vflag & VV_ROOT) ? 1 : 0)))
	    ) {
		(void) snpf(Namech, Namechl, "%s: %s", zm,
		    print_kptr((KA_T)v->v_data, (char *)NULL, 0));
		enter_nm(Namech);
		return;
	    }
	    z = &zi;

#if	defined(HAS_V_LOCKF)
	    if (v->v_lockf)
		(void) get_lock_state((KA_T)v->v_lockf);
#else	/* !defined(HAS_V_LOCKF) */
	    if (z->lockf)
		(void) get_lock_state((KA_T)z->lockf);
#endif	/* defined(HAS_V_LOCKF) */

	    break;
#endif	/* defined(HAS_ZFS) */

	default:
	    if (v->v_type == VBAD || v->v_type == VNON)
		break;

#if	FREEBSDV<5000
	    (void) snpf(Namech,Namechl,"unknown file system type: %d",v->v_tag);
#else	/* FREEBSDV>=5000 */
	    (void) snpf(Namech, Namechl, "unknown file system type: %s", vtbp);
#endif	/* FREEBSDV<5000 */

	    enter_nm(Namech);
	    return;
	}
/*
 * Get device and type for printing.
 */
	type = v->v_type;
	if (n) {
	    dev = n->n_vattr.va_fsid;
	    devs = 1;
	    if ((type == VCHR) || (type == VBLK)) {
		rdev = n->n_vattr.va_rdev;
		rdevs = 1;
	    }
	} else if (i) {

#if	FREEBSDV>=4000
# if	defined(HAS_NO_IDEV)
	    if (ums) {
		dev = Dev2Udev((KA_T)um.um_dev);
		devs = 1;
	    }
# else	/* !defined(HAS_NO_IDEV) */
	    if (i->i_dev

#  if	!defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV)
	    &&  !kread((KA_T)i->i_dev, (char *)&si, sizeof(si))
#  endif/* !defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV) */

	    ) {

#  if	defined(HAS_NO_SI_UDEV)
#   if	defined(HAS_CONF_MINOR) || defined(HAS_CDEV2PRIV)
		dev = Dev2Udev((KA_T)i->i_dev);
#   else	/* !defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV) */
		dev = Dev2Udev(&si);
#   endif	/* defined(HAS_CONF_MINOR) || defined(HAS_CDEV2PRIV) */
#   else	/* !defined(HAS_NO_SI_UDEV) */
		dev = si.si_udev;
#  endif	/* defined(HAS_NO_SI_UDEV) */

		devs = 1;
	    }
# endif	/* defined(HAS_NO_IDEV) */
#else	/* FREEBSDV<4000 */
	    dev = i->i_dev;
	    devs = 1;
#endif	/* FREEBSDV>=4000 */

	    if ((type == VCHR) || (type == VBLK)) {

#if	FREEBSDV>=5000
# if	defined(HAS_UFS1_2)
		if (ufst == 1) {
		    rdev = d1.di_rdev;
		    rdevs = 1;
		} else if (ufst == 2) {
		    rdev = d2.di_rdev;
		    rdevs = 1;
		} else
# endif	/* defined(HAS_UFS1_2) */

		if (cds) {

# if	defined(HAS_NO_SI_UDEV)
#  if	defined(HAS_CONF_MINOR) || defined(HAS_CDEV2PRIV)
		    rdev = Dev2Udev((KA_T)v->v_rdev);
#  else	/* !defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV) */
		    rdev = Dev2Udev(&cd);
#  endif	/* defined(HAS_CONF_MINOR) || defined(HAS_CDEV2PRIV) */
# else	/* !defined(HAS_NO_SI_UDEV) */
		    rdev = cd.si_udev;
# endif	/* defined(HAS_NO_SI_UDEV) */

		    rdevs = 1;
		}
#else	/* FREEBSDV<5000 */
		rdev = i->i_rdev;
		rdevs = 1;
#endif	/* FREEBSDV>=5000 */

	    }
	}

#if	defined(HAS_ZFS)
	else if (z) {

	/*
	 * Record information returned by readzfsnode().
	 */
	    if (vfs) {
		union {
		    int32_t val[2];
		    dev_t dev;
		} vfs_fsid;

		vfs_fsid.val[0] = vfs->fsid.val[0];
		vfs_fsid.val[1] = vfs->fsid.val[1];
		dev = vfs_fsid.dev;
		devs = 1;
	    }
	    if ((type == VCHR) || (type == VBLK)) {
		if (z->rdev_def) {
		    rdev = z->rdev;
		    rdevs = 1;
		}
	    }
	}
#endif	/* defined(HAS_ZFS) */

#if	defined(HASFDESCFS) && (defined(HASFDLINK) || HASFDESCFS==1)
	else if (f) {

# if	defined(HASFDLINK)
	    if (f->fd_link
	    &&  kread((KA_T)f->fd_link, Namech, Namechl - 1) == 0)
		Namech[Namechl - 1] = '\0';

#  if	HASFDESCFS==1
	    else
#  endif	/* HASFDESCFS==1 */
# endif	/* defined(HASFDLINK) */

# if	HASFDESCFS==1
		if (f->fd_type == Fctty) {
		    if (f_tty_s == 0)
			f_tty_s = lkup_dev_tty(&f_tty_dev, &f_tty_ino);
		    if (f_tty_s == 1) {
			dev = f_tty_dev;
			Lf->inode = f_tty_ino;
			devs = Lf->inp_ty = 1;
		    }
		}
# endif	/* HASFDESCFS==1 */

	}
#endif	/* defined(HASFDESCFS) && (defined(HASFDLINK) || HASFDESCFS==1) */

#if	defined(HAS9660FS)
	else if (iso_stat && iso_dev_def) {
	    dev = iso_dev;
	    devs = Lf->inp_ty = 1;
	}
#endif	/* defined(HAS9660FS) */

#if	defined(HASFUSEFS)
	else if (fuse_stat && fuse_dev_def) {
	    dev = fuse_dev;
	    devs = Lf->inp_ty = 1;
	}
#endif	/* defined(HASFUSEFS) */

#if	FREEBSDV>=5000
	else if (d) {
	    if (vfs) {
		dev = vfs->fsid.val[0];
		devs = 1;
	    } else {
		dev = DevDev;
		devs = 1;
	    }
	    if (type == VCHR) {

# if	defined(HAS_UFS1_2)
		if (ufst == 1) {
		    rdev = d1.di_rdev;
		    rdevs = 1;
		} else if (ufst == 2) {
		    rdev = d2.di_rdev;
		    rdevs = 1;
		} else
# endif	/* defined(HAS_UFS1_2) */

		if (cds) {

# if	defined(HAS_NO_SI_UDEV)
#  if	defined(HAS_CONF_MINOR) || defined(HAS_CDEV2PRIV)
		    rdev = Dev2Udev((KA_T)v->v_rdev);
#  else	/* !defined(HAS_CONF_MINOR) && !defined(HAS_CDEV2PRIV) */
		    rdev = Dev2Udev(&cd);
#  endif	/* defined(HAS_CONF_MINOR) || defined(HAS_CDEV2PRIV) */
# else	/* !defined(HAS_NO_SI_UDEV) */
		    rdev = cd.si_udev;
# endif	/* defined(HAS_NO_SI_UDEV) */

		    rdevs = 1;
		}
	    }
	}
#endif	/* FREEBSDV>=5000 */

#if	defined(HASPSEUDOFS)
	else if (pnp) {
	    if (vfs) {
		dev = vfs->fsid.val[0];
		devs = 1;
	    }
	}
#endif	/* defined(HASPSEUDOFS) */

# if	defined(HAS_TMPFS)
	else if (tnp) {
	    if (vfs) {
		dev = vfs->fsid.val[0];
		devs = 1;
	    }
	    if (tnp->tn_type == VBLK || tnp->tn_type == VCHR) {
		rdev = tnp->tn_rdev;
		rdevs = 1;
	    }
	}
# endif	/* defined(HAS_TMPFS) */

/*
 * Obtain the inode number.
 */
	if (i) {
	    Lf->inode = (INODETYPE)i->i_number;
	    Lf->inp_ty = 1;
	}

#if	defined(HAS_ZFS)
	else if (z) {
	    if (z->ino_def) {
		Lf->inode = z->ino;
		Lf->inp_ty = 1;
	    }
	}
#endif	/* defined(HAS_ZFS) */

	else if (n) {
	    Lf->inode = (INODETYPE)n->n_vattr.va_fileid;
	    Lf->inp_ty = 1;
	}

#if	defined(HAS9660FS)
	else if (iso_stat) {
	    Lf->inode = iso_ino;
	    Lf->inp_ty = 1;
	}
#endif	/* defined(HAS9660FS) */

#if	defined(HASFUSEFS)
	else if (fuse_stat) {
	    Lf->inode = fuse_ino;
	    Lf->inp_ty = 1;
	}
#endif	/* defined(HASFUSEFS) */

#if	defined(HASPROCFS)
# if	FREEBSDV>=2000
	else if (p) {
	    Lf->inode = (INODETYPE)p->pfs_fileno;
	    Lf->inp_ty = 1;
	}
# endif	/* FREEBSDV>=2000 */
#endif	/* defined(HASPROCFS) */

#if	defined(HASPSEUDOFS)
	else if (pnp) {
	    Lf->inode = (INODETYPE)pnp->pn_fileno;
	    Lf->inp_ty = 1;
	}
#endif	/* defined(HASPSEUDOFS) */

#if	FREEBSDV>=5000
	else if (d) {
	    Lf->inode = (INODETYPE)d->de_inode;
	    Lf->inp_ty = 1;
	}
#endif	/* FREEBSDV>=5000 */

# if	defined(HAS_TMPFS)
	else if (tnp) {
	    Lf->inode = (INODETYPE)tnp->tn_id;
	    Lf->inp_ty = 1;
	}
# endif	/* defined(HAS_TMPFS) */

/*
 * Obtain the file size.
 */
	if (Foffset)
	    Lf->off_def = 1;
	else {
	    switch (Ntype) {
	    case N_FIFO:
		if (!Fsize)
		    Lf->off_def = 1;
		break;
	    case N_NFS:
		if (n) {
		    Lf->sz = (SZOFFTYPE)n->n_vattr.va_size;
		    Lf->sz_def = 1;
		}
		break;

#if	defined(HASPROCFS)
	    case N_PROC:

# if	FREEBSDV<2000
		if (type == VDIR || !p || !p->pfs_vs
		||  kread((KA_T)p->pfs_vs, (char *)&vm, sizeof(vm)))
		    break;
		if (pgsz < 0)
		    pgsz = getpagesize();
		Lf->sz = (SZOFFTYPE)((pgsz * vm.vm_tsize)
		       +         (pgsz * vm.vm_dsize)
		       +         (pgsz * vm.vm_ssize));
		Lf->sz_def = 1;
		break;
# else	/* FREEBSDV>=2000 */
		if (p) {
		    switch(p->pfs_type) {
		    case Proot:
		    case Pproc:
			Lf->sz = (SZOFFTYPE)DEV_BSIZE;
			Lf->sz_def = 1;
			break;
		    case Pmem:
			(void) getmemsz(p->pfs_pid);
			break;
		    case Pregs:
			Lf->sz = (SZOFFTYPE)sizeof(struct reg);
			Lf->sz_def = 1;
			break;
		    case Pfpregs:
			Lf->sz = (SZOFFTYPE)sizeof(struct fpreg);
			Lf->sz_def = 1;
			break;
		    }
		}
# endif	/* FREEBSDV<2000 */
#endif	/* defined(HASPROCFS) */

#if	defined(HASPSEUDOFS)
	    case N_PSEU:
		Lf->sz = 0;
		Lf->sz_def = 1;
		break;
#endif	/* defined(PSEUDOFS) */

	    case N_REGLR:
		if (type == VREG || type == VDIR) {
		    if (i) {

#if	defined(HAS_UFS1_2)
			if (ufst == 1)
			    Lf->sz = (SZOFFTYPE)d1.di_size;
			else if (ufst == 2)
			    Lf->sz = (SZOFFTYPE)d2.di_size;
			else
#endif	/* defined(HAS_UFS1_2) */

			Lf->sz = (SZOFFTYPE)i->i_size;
			Lf->sz_def = 1;
		    }


#if     defined(HAS_ZFS)
		    else if (z) {
			if (z->sz_def) {
			    Lf->sz = z->sz;
			    Lf->sz_def = 1;
			}
		    }
#endif  /* defined(HAS_ZFS) */

#if	FREEBSDV<5000
		    else if (m) {
			Lf->sz = (SZOFFTYPE)m->mfs_size;
			Lf->sz_def = 1;
		    }
#endif	/* FREEBSDV<5000 */

#if	defined(HAS9660FS)
		    else if (iso_stat) {
			Lf->sz = (SZOFFTYPE)iso_sz;
			Lf->sz_def = 1;
		    }

#endif	/* defined(HAS9660FS) */

#if	defined(HASFUSEFS)
		    else if (fuse_stat) {
			Lf->sz = (SZOFFTYPE)fuse_sz;
			Lf->sz_def = 1;
		    }
#endif	/* defined(HASFUSEFS) */

		}
		else if ((type == VCHR || type == VBLK) && !Fsize)
		    Lf->off_def = 1;
		break;

# if	defined(HAS_TMPFS)
		case N_TMP:
		    if ((tnp->tn_type == VBLK || tnp->tn_type == VCHR)
		    &&  !Fsize) {
			Lf->off_def = 1;
		    } else {
			Lf->sz = (SZOFFTYPE)tnp->tn_size;
			Lf->sz_def = 1;
		    }
		    break;
# endif	/* defined(HAS_TMPFS) */

	    }
	}
/*
 * Record the link count.
 */
	if (Fnlink) {
	    switch(Ntype) {
	    case N_NFS:
		if (n) {
		    Lf->nlink = (long)n->n_vattr.va_nlink;
		    Lf->nlink_def = 1;
		}
		break;
	    case N_REGLR:
		if (i) {

#if	defined(HASEFFNLINK)
		    Lf->nlink = (long)i->HASEFFNLINK;
#else	/* !defined(HASEFFNLINK) */
		    Lf->nlink = (long)i->i_nlink;
#endif	/* defined(HASEFFNLINK) */

		    Lf->nlink_def = 1;
		}

#if	defined(HAS_ZFS)
		else if (z) {
		    if (z->nl_def) {
			Lf->nlink = z->nl;
			Lf->nlink_def = 1;
		    }
		}
#endif	/* defined(HAS_ZFS) */

#if	defined(HAS9660FS)
		else if (iso_stat) {
		    Lf->nlink = iso_links;
		    Lf->nlink_def = 1;
		}
#endif	/* defined(HAS9660FS) */

#if	defined(HASFUSEFS)
		else if (fuse_stat) {
		    Lf->nlink = fuse_links;
		    Lf->nlink_def = 1;
		}
#endif	/* defined(HASFUSEFS) */

#if	FREEBSDV>=5000
		else if (d) {
		    Lf->nlink = d->de_links;
		    Lf->nlink_def = 1;
		}
#endif	/* FREEBSDV>=5000 */

		break;

#if	defined(HASPSEUODOFS)
	    case N_PSEU:
		if (pnp) {
		    Lf->nlink = 1L;
		    Lf->nlink_def = 1;
		}
		break;
#endif	/* defined(HASPSEUODOFS) */

# if	defined(HAS_TMPFS)
	    case N_TMP:
		if (tnp) {
		    Lf->nlink = (long)tnp->tn_links;
		    Lf->nlink_def = 1;
		}
		break;
# endif	/* defined(HAS_TMPFS) */

	    }
	    if (Lf->nlink_def && Nlink && (Lf->nlink < Nlink))
		Lf->sf |= SELNLINK;
	}
/*
 * Record an NFS file selection.
 */
	if (Ntype == N_NFS && Fnfs)
	    Lf->sf |= SELNFS;
/*
 * Save the file system names.
 */
	if (vfs) {
	    Lf->fsdir = vfs->dir;
	    Lf->fsdev = vfs->fsname;
	}
/*
 * Save the device numbers and their states.
 *
 * Format the vnode type, and possibly the device name.
 */
	Lf->dev = dev;
	Lf->dev_def = devs;
	Lf->rdev = rdev;
	Lf->rdev_def = rdevs;
	switch (type) {
	case VNON:
	    ty ="VNON";
	    break;
	case VREG:
	case VDIR:
	    ty = (type == VREG) ? "VREG" : "VDIR";
	    break;
	case VBLK:
	    ty = "VBLK";
	    Ntype = N_BLK;
	    break;
	case VCHR:
	    ty = "VCHR";
	    Ntype = N_CHR;
	    break;
	case VLNK:
	    ty = "VLNK";
	    break;

#if	defined(VSOCK)
	case VSOCK:
	    ty = "SOCK";
	    break;
#endif	/* defined(VSOCK) */

	case VBAD:
	    ty = "VBAD";
	    break;
	case VFIFO:
	    ty = "FIFO";
	    break;
	default:
	     (void) snpf(Lf->type, sizeof(Lf->type), "%04o", (type & 0xfff));
	     ty = (char *)NULL;
	}
	if (ty)
	    (void) snpf(Lf->type, sizeof(Lf->type), "%s", ty);
	Lf->ntype = Ntype;
/*
 * Handle some special cases:
 *
 * 	ioctl(fd, TIOCNOTTY) files;
 *	memory node files;
 *	/proc files.
 */

	if (type == VBAD)
	    (void) snpf(Namech, Namechl, "(revoked)");

#if	FREEBSDV<5000
	else if (m) {
	    Lf->dev_def = Lf->rdev_def = 0;
	    (void) snpf(Namech, Namechl, "%#x", m->mfs_baseoff);
	    (void) snpf(dev_ch, sizeof(dev_ch), "    memory");
	    enter_dev_ch(dev_ch);
	}
#endif	/* FREEBSDV<5000 */


#if	defined(HASPROCFS)
	else if (p) {
	    Lf->dev_def = Lf->rdev_def = 0;

# if	FREEBSDV<2000
	    if (type == VDIR)
		(void) snpf(Namech, Namechl, "/%s", HASPROCFS);
	    else
		(void) snpf(Namech, Namechl, "/%s/%0*d", HASPROCFS, PNSIZ,
		    p->pfs_pid);
	    enter_nm(Namech);
# else	/* FREEBSDV>=2000 */
	    ty = (char *)NULL;
	    (void) snpf(Namech, Namechl, "/%s", HASPROCFS);
	    switch (p->pfs_type) {
	    case Proot:
		ty = "PDIR";
		break;
	    case Pproc:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d", p->pfs_pid);
		ty = "PDIR";
		break;
	    case Pfile:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/file", p->pfs_pid);
		ty = "PFIL";
		break;
	    case Pmem:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/mem", p->pfs_pid);
		ty = "PMEM";
		break;
	    case Pregs:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/regs", p->pfs_pid);
		ty = "PREG";
		break;
	    case Pfpregs:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/fpregs", p->pfs_pid);
		ty = "PFPR";
		break;
	    case Pctl:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/ctl", p->pfs_pid);
		ty = "PCTL";
		break;
	    case Pstatus:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/status", p->pfs_pid);
		ty = "PSTA";
		break;
	    case Pnote:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/note", p->pfs_pid);
		ty = "PNTF";
		break;
	    case Pnotepg:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/notepg", p->pfs_pid);
		ty = "PGID";
		break;

#  if	FREEBSDV>=3000
	    case Pmap:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/map", p->pfs_pid);
		ty = "PMAP";
		break;
	    case Ptype:
		ep = endnm(&sz);
		(void) snpf(ep, sz, "/%d/etype", p->pfs_pid);
		ty = "PETY";
		break;
#  endif	/* FREEBSDV>=3000 */

	    }
	    if (ty)
		(void) snpf(Lf->type, sizeof(Lf->type), "%s", ty);
	    enter_nm(Namech);

# endif	/* FREEBSDV<2000 */
	}
#endif	/* defined(HASPROCFS) */

#if	defined(HASBLKDEV)
/*
 * If this is a VBLK file and it's missing an inode number, try to
 * supply one.
 */
	if ((Lf->inp_ty == 0) && (type == VBLK))
	    find_bl_ino();
#endif	/* defined(HASBLKDEV) */

/*
 * If this is a VCHR file and it's missing an inode number, try to
 * supply one.
 */
	if ((Lf->inp_ty == 0) && (type == VCHR))
	    find_ch_ino();
/*
 * Test for specified file.
 */

#if	defined(HASPROCFS)
	if (Ntype == N_PROC) {
	    if (Procsrch) {
		Procfind = 1;
		Lf->sf |= SELNM;
	    } else {
		for (pfi = Procfsid; pfi; pfi = pfi->next) {
		    if ((pfi->pid && pfi->pid == p->pfs_pid)

# if	defined(HASPINODEN)
		    ||  (Lf->inp_ty == 1 && Lf->inode == pfi->inode)
# else	/* !defined(HASPINODEN) */
				if (pfi->pid == p->pfs_pid)
# endif	/* defined(HASPINODEN) */

		    ) {
			pfi->f = 1;
			if (!Namech[0])
			    (void) snpf(Namech, Namechl, "%s", pfi->nm);
			Lf->sf |= SELNM;
			break;
		    }
		}
	    }
	} else
#endif	/* defined(HASPROCFS) */

	{
	    if (Sfile && is_file_named((char *)NULL,
				       ((type == VCHR) || (type == VBLK)) ? 1
									  : 0))
		Lf->sf |= SELNM;
	}
/*
 * Enter name characters.
 */
	if (Namech[0])
	    enter_nm(Namech);
}


#if	FREEBSDV>=2020
/*
 * process_pipe() - process a file structure whose type is DTYPE_PIPE
 */

void
process_pipe(pa)
	KA_T pa;			/* pipe structure address */
{
	char dev_ch[32], *ep;
	struct pipe p;
	size_t sz;

	if (!pa || kread(pa, (char *)&p, sizeof(p))) {
	    (void) snpf(Namech, Namechl,
		"can't read DTYPE_PIPE pipe struct: %s",
		print_kptr((KA_T)pa, (char *)NULL, 0));
	    enter_nm(Namech);
	    return;
	}
	(void) snpf(Lf->type, sizeof(Lf->type), "PIPE");
	(void) snpf(dev_ch, sizeof(dev_ch), "%s",
	    print_kptr(pa, (char *)NULL, 0));
	enter_dev_ch(dev_ch);
	if (Foffset)
	    Lf->off_def = 1;
	else {
	    Lf->sz = (SZOFFTYPE)p.pipe_buffer.size;
	    Lf->sz_def = 1;
	}
	if (p.pipe_peer)
	    (void) snpf(Namech, Namechl, "->%s",
		print_kptr((KA_T)p.pipe_peer, (char *)NULL, 0));
	else
	    Namech[0] = '\0';
	if (p.pipe_buffer.cnt) {
	    ep = endnm(&sz);
	    (void) snpf(ep, sz, ", cnt=%d", p.pipe_buffer.cnt);
	}
	if (p.pipe_buffer.in) {
	    ep = endnm(&sz);
	    (void) snpf(ep, sz, ", in=%d", p.pipe_buffer.in);
	}
	if (p.pipe_buffer.out) {
	    ep = endnm(&sz);
	    (void) snpf(ep, sz, ", out=%d", p.pipe_buffer.out);
	}
/*
 * Enter name characters.
 */
	if (Namech[0])
	    enter_nm(Namech);
}
#endif	/* FREEBSDV>=2020 */


#if	defined(HASPTSFN) && defined(DTYPE_PTS)
/*
 * process_pts - process a file structure whose type is DTYPE_PTS
 */

void process_pts(tp)
	KA_T tp;			/* f_data pointer to tty structure */
{
	dev_t dev;			/* IFCHR device number */
	struct tty t;			/* tty structure */

	(void) snpf(Lf->type, sizeof(Lf->type), "PTS");
/*
 * Read the tty structure.  Quit if it can't be read.
 */
	if (!tp || kread(tp, (char *)&t, sizeof(t))) {
	    (void) snpf(Namech, Namechl,
		"can't read DTYPE_PTS tty struct: %s",
		print_kptr((KA_T)tp, (char *)NULL, 0));
	    enter_nm(Namech);
	    return;
	}
/*
 * Convert the tty's cdev from kernel to user form.
 *
 * Set the device number to DevDev, the device number of /dev.
 *
 * Set the inode number to the device number.
 *
 * Set the file type to N_CHR for a character device (That's what a PTS is.)
 *
 * Force the use of offset from file structure.
 *
 * Set rdev to the converted device.
 *
 * Force the reloading of the device cache.
 */
	if ((dev = Dev2Udev((KA_T)t.t_dev)) == NODEV) {
	    (void) snpf(Namech, Namechl,
		"can't convert device in DTYPE_PTS tty struct: %s",
		print_kptr((KA_T)tp, (char *)NULL, 0));
	    enter_nm(Namech);
	    return;
	}
	Lf->dev = DevDev;
	Lf->inode = (INODETYPE)dev;
	Lf->inp_ty = Lf->dev_def = Lf->rdev_def = 1;
	Lf->ntype = N_CHR;
	Lf->off_def = 1;
	Lf->rdev = dev;
	DCunsafe = 1;
}
#endif	/* defined(HASPTSFN) && defined(DTYPE_PTS) */