/*
* 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 2004 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/user.h>
#include <sys/fstyp.h>
#include <sys/kmem.h>
#include <sys/systm.h>
#include <sys/mount.h>
#include <sys/vfs.h>
#include <sys/cred.h>
#include <sys/vnode.h>
#include <sys/dnlc.h>
#include <sys/file.h>
#include <sys/time.h>
#include <sys/cmn_err.h>
#include <sys/swap.h>
#include <sys/debug.h>
#include <sys/pathname.h>
#include <sys/cladm.h>
/*
* System calls.
*/
/*
* "struct mounta" defined in sys/vfs.h.
*/
/* ARGSUSED */
int
mount(long *lp, rval_t *rp)
{
vnode_t *vp = NULL;
struct vfs *vfsp; /* dummy argument */
int error;
struct mounta *uap;
#if defined(_LP64)
struct mounta native;
/*
* Make a struct mounta if we are DATAMODEL_LP64
*/
uap = &native;
uap->spec = (char *)*lp++;
uap->dir = (char *)*lp++;
uap->flags = (int)*lp++;
uap->fstype = (char *)*lp++;
uap->dataptr = (char *)*lp++;
uap->datalen = (int)*lp++;
uap->optptr = (char *)*lp++;
uap->optlen = (int)*lp++;
#else /* !defined(_LP64) */
/*
* 32 bit kernels can take a shortcut and just cast
* the args array to the structure.
*/
uap = (struct mounta *)lp;
#endif /* _LP64 */
/*
* Resolve second path name (mount point).
*/
if (error = lookupname(uap->dir, UIO_USERSPACE, FOLLOW, NULLVPP, &vp))
return (set_errno(error));
/*
* Some mount flags are disallowed through the system call interface.
*/
uap->flags &= MS_MASK;
if ((vp->v_flag & VPXFS) && ((uap->flags & MS_GLOBAL) != MS_GLOBAL)) {
/*
* Clustering: if we're doing a mount onto the global
* namespace, and the mount is not a global mount, return
* an error.
*/
error = ENOTSUP;
} else if (uap->flags & MS_GLOBAL) {
/*
* Clustering: global mount specified.
*/
if ((cluster_bootflags & CLUSTER_BOOTED) == 0) {
/*
* If we're not booted as a cluster,
* global mounts are not allowed.
*/
error = ENOTSUP;
} else {
error = domount("pxfs", uap, vp, CRED(), &vfsp);
if (!error)
VFS_RELE(vfsp);
}
} else {
error = domount(NULL, uap, vp, CRED(), &vfsp);
if (!error)
VFS_RELE(vfsp);
}
VN_RELE(vp);
rp->r_val2 = error;
return (error ? set_errno(error) : 0);
}