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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 1993 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*
* Portions of this source code were derived from Berkeley 4.3 BSD
* under license from the Regents of the University of California.
*/
#pragma ident "%Z%%M% %I% %E% SMI"
#include <sys/types.h>
#include <sys/t_lock.h>
#include <sys/param.h>
#include <sys/errno.h>
#include <sys/fstyp.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/vfs.h>
#include <sys/vnode.h>
#include <sys/cmn_err.h>
#include <sys/buf.h>
#include <sys/debug.h>
#include <sys/pathname.h>
/*
* System call to map fstype numbers to names, and vice versa.
*/
static int sysfsind(char *);
static int sysfstyp(int, char *);
int
sysfs(int opcode, long a1, long a2)
{
int error;
switch (opcode) {
case GETFSIND:
error = sysfsind((char *)a1);
break;
case GETFSTYP:
error = sysfstyp((int)a1, (char *)a2);
break;
case GETNFSTYP:
/*
* Return number of fstypes configured in the system.
*/
return (nfstype - 1);
default:
error = set_errno(EINVAL);
}
return (error);
}
static int
sysfsind(char *fsname)
{
/*
* Translate fs identifier to an index into the vfssw structure.
*/
struct vfssw *vswp;
char fsbuf[FSTYPSZ];
int retval;
size_t len = 0;
retval = copyinstr(fsname, fsbuf, FSTYPSZ, &len);
if (retval == ENOENT) /* XXX */
retval = EINVAL; /* XXX */
if (len == 1) /* Includes null byte */
retval = EINVAL;
if (retval)
return (set_errno(retval));
/*
* Search the vfssw table for the fs identifier
* and return the index.
*/
if ((vswp = vfs_getvfssw(fsbuf)) != NULL) {
retval = vswp - vfssw;
vfs_unrefvfssw(vswp);
return (retval);
}
return (set_errno(EINVAL));
}
static int
sysfstyp(int index, char *cbuf)
{
/*
* Translate fstype index into an fs identifier.
*/
char *src;
struct vfssw *vswp;
char *osrc;
int error = 0;
if (index <= 0 || index >= nfstype)
return (set_errno(EINVAL));
RLOCK_VFSSW();
vswp = &vfssw[index];
osrc = src = vswp->vsw_name;
while (*src++)
;
if (copyout(osrc, cbuf, src - osrc))
error = set_errno(EFAULT);
RUNLOCK_VFSSW();
return (error);
}
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