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      1  0  stevel /*
      2  0  stevel  * CDDL HEADER START
      3  0  stevel  *
      4  0  stevel  * The contents of this file are subject to the terms of the
      5  0  stevel  * Common Development and Distribution License, Version 1.0 only
      6  0  stevel  * (the "License").  You may not use this file except in compliance
      7  0  stevel  * with the License.
      8  0  stevel  *
      9  0  stevel  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
     10  0  stevel  * or http://www.opensolaris.org/os/licensing.
     11  0  stevel  * See the License for the specific language governing permissions
     12  0  stevel  * and limitations under the License.
     13  0  stevel  *
     14  0  stevel  * When distributing Covered Code, include this CDDL HEADER in each
     15  0  stevel  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
     16  0  stevel  * If applicable, add the following below this CDDL HEADER, with the
     17  0  stevel  * fields enclosed by brackets "[]" replaced with your own identifying
     18  0  stevel  * information: Portions Copyright [yyyy] [name of copyright owner]
     19  0  stevel  *
     20  0  stevel  * CDDL HEADER END
     21  0  stevel  */
     22  0  stevel /*
     23  0  stevel  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
     24  0  stevel  * Use is subject to license terms.
     25  0  stevel  */
     26  0  stevel 
     27  0  stevel /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
     28  0  stevel /*	  All Rights Reserved  	*/
     29  0  stevel 
     30  0  stevel /*
     31  0  stevel  * Portions of this source code were derived from Berkeley 4.3 BSD
     32  0  stevel  * under license from the Regents of the University of California.
     33  0  stevel  */
     34  0  stevel 
     35  0  stevel #pragma ident	"%Z%%M%	%I%	%E% SMI"
     36  0  stevel 
     37  0  stevel #include <sys/types.h>
     38  0  stevel #include <sys/t_lock.h>
     39  0  stevel #include <sys/param.h>
     40  0  stevel #include <sys/errno.h>
     41  0  stevel #include <sys/user.h>
     42  0  stevel #include <sys/fstyp.h>
     43  0  stevel #include <sys/kmem.h>
     44  0  stevel #include <sys/systm.h>
     45  0  stevel #include <sys/mount.h>
     46  0  stevel #include <sys/vfs.h>
     47  0  stevel #include <sys/cred.h>
     48  0  stevel #include <sys/vnode.h>
     49  0  stevel #include <sys/dnlc.h>
     50  0  stevel #include <sys/file.h>
     51  0  stevel #include <sys/time.h>
     52  0  stevel #include <sys/cmn_err.h>
     53  0  stevel #include <sys/swap.h>
     54  0  stevel #include <sys/debug.h>
     55  0  stevel #include <sys/pathname.h>
     56  0  stevel #include <sys/cladm.h>
     57  0  stevel 
     58  0  stevel /*
     59  0  stevel  * System calls.
     60  0  stevel  */
     61  0  stevel 
     62  0  stevel /*
     63  0  stevel  * "struct mounta" defined in sys/vfs.h.
     64  0  stevel  */
     65  0  stevel 
     66  0  stevel /* ARGSUSED */
     67  0  stevel int
     68  0  stevel mount(long *lp, rval_t *rp)
     69  0  stevel {
     70  0  stevel 	vnode_t *vp = NULL;
     71  0  stevel 	struct vfs *vfsp;	/* dummy argument */
     72  0  stevel 	int error;
     73  0  stevel 	struct mounta *uap;
     74  0  stevel #if defined(_LP64)
     75  0  stevel 	struct mounta native;
     76  0  stevel 
     77  0  stevel 	/*
     78  0  stevel 	 * Make a struct mounta if we are DATAMODEL_LP64
     79  0  stevel 	 */
     80  0  stevel 	uap = &native;
     81  0  stevel 	uap->spec = (char *)*lp++;
     82  0  stevel 	uap->dir = (char *)*lp++;
     83  0  stevel 	uap->flags = (int)*lp++;
     84  0  stevel 	uap->fstype = (char *)*lp++;
     85  0  stevel 	uap->dataptr = (char *)*lp++;
     86  0  stevel 	uap->datalen = (int)*lp++;
     87  0  stevel 	uap->optptr = (char *)*lp++;
     88  0  stevel 	uap->optlen = (int)*lp++;
     89  0  stevel #else	/* !defined(_LP64) */
     90  0  stevel 	/*
     91  0  stevel 	 * 32 bit kernels can take a shortcut and just cast
     92  0  stevel 	 * the args array to the structure.
     93  0  stevel 	 */
     94  0  stevel 	uap = (struct mounta *)lp;
     95  0  stevel #endif	/* _LP64 */
     96  0  stevel 	/*
     97  0  stevel 	 * Resolve second path name (mount point).
     98  0  stevel 	 */
     99  0  stevel 	if (error = lookupname(uap->dir, UIO_USERSPACE, FOLLOW, NULLVPP, &vp))
    100  0  stevel 		return (set_errno(error));
    101  0  stevel 
    102  0  stevel 	/*
    103  0  stevel 	 * Some mount flags are disallowed through the system call interface.
    104  0  stevel 	 */
    105  0  stevel 	uap->flags &= MS_MASK;
    106  0  stevel 
    107  0  stevel 	if ((vp->v_flag & VPXFS) && ((uap->flags & MS_GLOBAL) != MS_GLOBAL)) {
    108  0  stevel 		/*
    109  0  stevel 		 * Clustering: if we're doing a mount onto the global
    110  0  stevel 		 * namespace, and the mount is not a global mount, return
    111  0  stevel 		 * an error.
    112  0  stevel 		 */
    113  0  stevel 		error = ENOTSUP;
    114  0  stevel 	} else if (uap->flags & MS_GLOBAL) {
    115  0  stevel 		/*
    116  0  stevel 		 * Clustering: global mount specified.
    117  0  stevel 		 */
    118  0  stevel 		if ((cluster_bootflags & CLUSTER_BOOTED) == 0) {
    119  0  stevel 			/*
    120  0  stevel 			 * If we're not booted as a cluster,
    121  0  stevel 			 * global mounts are not allowed.
    122  0  stevel 			 */
    123  0  stevel 			error = ENOTSUP;
    124  0  stevel 		} else {
    125  0  stevel 			error = domount("pxfs", uap, vp, CRED(), &vfsp);
    126  0  stevel 			if (!error)
    127  0  stevel 				VFS_RELE(vfsp);
    128  0  stevel 		}
    129  0  stevel 	} else {
    130  0  stevel 		error = domount(NULL, uap, vp, CRED(), &vfsp);
    131  0  stevel 		if (!error)
    132  0  stevel 			VFS_RELE(vfsp);
    133  0  stevel 	}
    134  0  stevel 	VN_RELE(vp);
    135  0  stevel 	rp->r_val2 = error;
    136  0  stevel 	return (error ? set_errno(error) : 0);
    137  0  stevel }
    138