xref: /illumos-gate/usr/src/uts/common/fs/ufs/ufs_log.c (revision 2d6eb4a5)
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, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*
23  * Copyright 2003 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 #include <sys/systm.h>
28 #include <sys/vnode.h>
29 #include <sys/uio.h>
30 #include <sys/errno.h>
31 #include <sys/fs/ufs_inode.h>
32 
33 #include <sys/fs/ufs_filio.h>
34 #include <sys/fs/ufs_log.h>
35 #include <sys/sunddi.h>
36 #include <sys/file.h>
37 
38 /* ARGSUSED */
39 int
ufs_fiologenable(vnode_t * vp,fiolog_t * ufl,cred_t * cr,int flags)40 ufs_fiologenable(vnode_t *vp, fiolog_t *ufl, cred_t *cr, int flags)
41 {
42 	int		error = 0;
43 	fiolog_t	fl;
44 
45 	/*
46 	 * Enable logging
47 	 */
48 	if (ddi_copyin(ufl, &fl, sizeof (fl), flags))
49 		return (EFAULT);
50 	error = lufs_enable(vp, &fl, cr);
51 	if (ddi_copyout(&fl, ufl, sizeof (*ufl), flags))
52 		return (EFAULT);
53 
54 	return (error);
55 }
56 
57 /* ARGSUSED */
58 int
ufs_fiologdisable(vnode_t * vp,fiolog_t * ufl,cred_t * cr,int flags)59 ufs_fiologdisable(vnode_t *vp, fiolog_t *ufl, cred_t *cr, int flags)
60 {
61 	int		error = 0;
62 	struct fiolog	fl;
63 
64 	/*
65 	 * Disable logging
66 	 */
67 	if (ddi_copyin(ufl, &fl, sizeof (fl), flags))
68 		return (EFAULT);
69 	error = lufs_disable(vp, &fl);
70 	if (ddi_copyout(&fl, ufl, sizeof (*ufl), flags))
71 		return (EFAULT);
72 
73 	return (error);
74 }
75 
76 /*
77  * ufs_fioislog
78  *	Return true if log is present and active; otherwise false
79  */
80 /* ARGSUSED */
81 int
ufs_fioislog(vnode_t * vp,uint32_t * islog,cred_t * cr,int flags)82 ufs_fioislog(vnode_t *vp, uint32_t *islog, cred_t *cr, int flags)
83 {
84 	ufsvfs_t	*ufsvfsp	= VTOI(vp)->i_ufsvfs;
85 	int		active;
86 
87 	active = (ufsvfsp && ufsvfsp->vfs_log);
88 	if (flags & FKIOCTL)
89 		*islog = active;
90 	else if (suword32(islog, active))
91 		return (EFAULT);
92 	return (0);
93 }
94