1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21/*
22 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23 * Use is subject to license terms.
24 */
25
26#pragma ident	"%Z%%M%	%I%	%E% SMI"
27
28#include <sys/errno.h>
29#include <sys/file.h>
30#include <sys/objfs.h>
31#include <sys/objfs_impl.h>
32
33/*
34 * For directories, make sure we are using large-file aware interfaces and we
35 * aren't trying to open it writeable.
36 */
37/* ARGSUSED */
38int
39objfs_dir_open(vnode_t **cpp, int flag, cred_t *cr,
40    caller_context_t *ct)
41{
42	if ((flag & (FOFFMAX | FWRITE)) != FOFFMAX)
43		return (EINVAL);
44
45	return (0);
46}
47
48/*
49 * For all vnodes which have no cleanup to do at close time.
50 */
51/* ARGSUSED */
52int
53objfs_common_close(vnode_t *vp, int flag, int count, offset_t off, cred_t *cr,
54    caller_context_t *ct)
55{
56	return (0);
57}
58
59/*
60 * For directories, ensure we're not open for writing.
61 */
62/* ARGSUSED */
63int
64objfs_dir_access(vnode_t *vp, int mode, int flags, cred_t *cr,
65    caller_context_t *ct)
66{
67	if (mode & VWRITE)
68		return (EACCES);
69
70	return (0);
71}
72
73/*
74 * Fills in common fields for getattr().
75 */
76int
77objfs_common_getattr(vnode_t *vp, vattr_t *vap)
78{
79	vap->va_uid = 0;
80	vap->va_gid = 0;
81	vap->va_rdev = 0;
82	vap->va_blksize = DEV_BSIZE;
83	vap->va_nblocks = howmany(vap->va_size, vap->va_blksize);
84	vap->va_seq = 0;
85	vap->va_fsid = vp->v_vfsp->vfs_dev;
86
87	return (0);
88}
89
90/*
91 * Returns the number objects currently loaded in the system.
92 */
93int
94objfs_nobjs(void)
95{
96	int count = 0;
97	struct modctl *mp;
98
99	mutex_enter(&mod_lock);
100	mp = &modules;
101
102	do {
103		if (mp->mod_loaded)
104			count++;
105	} while ((mp = mp->mod_next) != &modules);
106
107	mutex_exit(&mod_lock);
108
109	return (count);
110}
111