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 */
38 int
objfs_dir_open(vnode_t ** cpp,int flag,cred_t * cr,caller_context_t * ct)39 objfs_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 */
52 int
objfs_common_close(vnode_t * vp,int flag,int count,offset_t off,cred_t * cr,caller_context_t * ct)53 objfs_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 */
63 int
objfs_dir_access(vnode_t * vp,int mode,int flags,cred_t * cr,caller_context_t * ct)64 objfs_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 */
76 int
objfs_common_getattr(vnode_t * vp,vattr_t * vap)77 objfs_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 */
93 int
objfs_nobjs(void)94 objfs_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