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 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /*
28 * get timestamp from device
29 */
30
31 #include <meta.h>
32
33 /*
34 * get timestamp
35 */
36 int
getdevstamp(mddrivename_t * dnp,time_t * stamp,md_error_t * ep)37 getdevstamp(
38 mddrivename_t *dnp,
39 time_t *stamp, /* return timestamp here */
40 md_error_t *ep
41 )
42 {
43 int fd;
44 int partno;
45 struct extvtoc vtocbuf;
46 mdname_t *np;
47
48 if ((np = metaslicename(dnp, MD_SLICE0, ep)) == NULL)
49 return (-1);
50
51 /* open given device */
52 if ((fd = open(np->rname, O_RDONLY | O_NDELAY, 0)) < 0)
53 return (mdsyserror(ep, errno, np->cname));
54
55 /* re-read vtoc */
56 if (meta_getvtoc(fd, np->cname, &vtocbuf, &partno, ep) == -1) {
57 (void) close(fd);
58 return (-1);
59 }
60
61 /* close device */
62 (void) close(fd); /* sd/ssd bug */
63
64 /* return timestamp, success */
65 *stamp = vtocbuf.timestamp[partno];
66 return (0);
67 }
68
69 /*
70 * returns
71 * 0 on success,
72 * ENOTSUP if it's not a device with a vtoc
73 * -1 on failure
74 */
75 int
setdevstamp(mddrivename_t * dnp,time_t * stamp,md_error_t * ep)76 setdevstamp(
77 mddrivename_t *dnp,
78 time_t *stamp, /* returned timestamp */
79 md_error_t *ep
80 )
81 {
82 int fd;
83 int partno;
84 struct extvtoc vtocbuf;
85 time_t now = time(NULL);
86 mdname_t *np;
87
88 if ((np = metaslicename(dnp, MD_SLICE0, ep)) == NULL)
89 return (-1);
90
91 /* open for vtoc */
92 if ((fd = open(np->rname, O_RDWR | O_NDELAY, 0)) < 0)
93 return (mdsyserror(ep, errno, np->cname));
94
95 if (meta_getvtoc(fd, np->cname, &vtocbuf, &partno, ep) == -1) {
96 (void) close(fd);
97 if (partno == VT_ENOTSUP)
98 return (ENOTSUP);
99 else
100 return (-1);
101 }
102
103 *stamp = vtocbuf.timestamp[partno] = now;
104
105 if (meta_setvtoc(fd, np->cname, &vtocbuf, ep) == -1) {
106 (void) close(fd);
107 return (-1);
108 }
109
110 /* Clear the timestamp */
111 vtocbuf.timestamp[partno] = 0;
112
113 if (meta_getvtoc(fd, np->cname, &vtocbuf, &partno, ep) == -1) {
114 (void) close(fd);
115 return (-1);
116 }
117
118 (void) close(fd); /* sd/ssd bug */
119
120 if (*stamp != vtocbuf.timestamp[partno])
121 return (mddeverror(ep, MDE_CANTVERIFY_VTOC, NODEV64,
122 np->cname));
123
124 return (0);
125 }
126