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 #include <sys/errno.h>
27 #include <sys/file.h>
28 #include <sys/objfs.h>
29 #include <sys/objfs_impl.h>
30
31 /*
32 * For directories, make sure we are using large-file aware interfaces and we
33 * aren't trying to open it writeable.
34 */
35 /* ARGSUSED */
36 int
objfs_dir_open(vnode_t ** cpp,int flag,cred_t * cr,caller_context_t * ct)37 objfs_dir_open(vnode_t **cpp, int flag, cred_t *cr,
38 caller_context_t *ct)
39 {
40 if ((flag & (FOFFMAX | FWRITE)) != FOFFMAX)
41 return (EINVAL);
42
43 return (0);
44 }
45
46 /*
47 * For all vnodes which have no cleanup to do at close time.
48 */
49 /* ARGSUSED */
50 int
objfs_common_close(vnode_t * vp,int flag,int count,offset_t off,cred_t * cr,caller_context_t * ct)51 objfs_common_close(vnode_t *vp, int flag, int count, offset_t off, cred_t *cr,
52 caller_context_t *ct)
53 {
54 return (0);
55 }
56
57 /*
58 * For directories, ensure we're not open for writing.
59 */
60 /* ARGSUSED */
61 int
objfs_dir_access(vnode_t * vp,int mode,int flags,cred_t * cr,caller_context_t * ct)62 objfs_dir_access(vnode_t *vp, int mode, int flags, cred_t *cr,
63 caller_context_t *ct)
64 {
65 if (mode & VWRITE)
66 return (EACCES);
67
68 return (0);
69 }
70
71 /*
72 * Fills in common fields for getattr().
73 */
74 int
objfs_common_getattr(vnode_t * vp,vattr_t * vap)75 objfs_common_getattr(vnode_t *vp, vattr_t *vap)
76 {
77 vap->va_uid = 0;
78 vap->va_gid = 0;
79 vap->va_rdev = 0;
80 vap->va_blksize = DEV_BSIZE;
81 vap->va_nblocks = howmany(vap->va_size, vap->va_blksize);
82 vap->va_seq = 0;
83 vap->va_fsid = vp->v_vfsp->vfs_dev;
84
85 return (0);
86 }
87
88 /*
89 * Returns the number objects currently loaded in the system.
90 */
91 int
objfs_nobjs(void)92 objfs_nobjs(void)
93 {
94 int count = 0;
95 struct modctl *mp;
96
97 mutex_enter(&mod_lock);
98 mp = &modules;
99
100 do {
101 if (mp->mod_loaded)
102 count++;
103 } while ((mp = mp->mod_next) != &modules);
104
105 mutex_exit(&mod_lock);
106
107 return (count);
108 }
109