/*
 * Copyright (c) 1993 Jan-Simon Pendry
 * Copyright (c) 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jan-Simon Pendry.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * $FreeBSD: src/sys/miscfs/procfs/procfs_type.c,v 1.6 1999/08/28 00:46:56 peter Exp $
 */

#include <sys/param.h>
#include <sys/systm.h>
#include <sys/uio.h>
#include <sys/proc.h>
#include <sys/sysent.h>
#include <sys/vnode.h>
#include <vfs/procfs/procfs.h>

int
procfs_dotype(struct proc *curp, struct lwp *lp, struct pfsnode *pfs,
	      struct uio *uio)
{
	struct proc *p = lp->lwp_proc;
	int len;
	int error;
	/*
	 * buffer for emulation type
	 */
	char mebuffer[256];
	char *none = "Not Available";

	if (uio->uio_rw != UIO_READ)
		return (EOPNOTSUPP);

	if (uio->uio_offset != 0)
		return (0);

	if (p && p->p_sysent && p->p_sysent->sv_name) {
		len = strlen(p->p_sysent->sv_name);
		bcopy(p->p_sysent->sv_name, mebuffer, len);
	} else {
		len = strlen(none);
		bcopy(none, mebuffer, len);
	}
	mebuffer[len++] = '\n';
	error = uiomove(mebuffer, len, uio);
	return error;
}

int
procfs_validtype(struct lwp *lp)
{
	return ((lp->lwp_proc->p_flags & P_SYSTEM) == 0);
}