ufs_disksubr.c revision 1.2.6.2 1 1.2.6.2 tls /* $NetBSD: ufs_disksubr.c,v 1.2.6.2 2013/02/25 00:28:50 tls Exp $ */
2 1.2.6.2 tls
3 1.2.6.2 tls /*
4 1.2.6.2 tls * Copyright (c) 1992 OMRON Corporation.
5 1.2.6.2 tls *
6 1.2.6.2 tls * This code is derived from software contributed to Berkeley by
7 1.2.6.2 tls * OMRON Corporation.
8 1.2.6.2 tls *
9 1.2.6.2 tls * Redistribution and use in source and binary forms, with or without
10 1.2.6.2 tls * modification, are permitted provided that the following conditions
11 1.2.6.2 tls * are met:
12 1.2.6.2 tls * 1. Redistributions of source code must retain the above copyright
13 1.2.6.2 tls * notice, this list of conditions and the following disclaimer.
14 1.2.6.2 tls * 2. Redistributions in binary form must reproduce the above copyright
15 1.2.6.2 tls * notice, this list of conditions and the following disclaimer in the
16 1.2.6.2 tls * documentation and/or other materials provided with the distribution.
17 1.2.6.2 tls * 3. All advertising materials mentioning features or use of this software
18 1.2.6.2 tls * must display the following acknowledgement:
19 1.2.6.2 tls * This product includes software developed by the University of
20 1.2.6.2 tls * California, Berkeley and its contributors.
21 1.2.6.2 tls * 4. Neither the name of the University nor the names of its contributors
22 1.2.6.2 tls * may be used to endorse or promote products derived from this software
23 1.2.6.2 tls * without specific prior written permission.
24 1.2.6.2 tls *
25 1.2.6.2 tls * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
26 1.2.6.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
27 1.2.6.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
28 1.2.6.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
29 1.2.6.2 tls * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
30 1.2.6.2 tls * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
31 1.2.6.2 tls * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
32 1.2.6.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
33 1.2.6.2 tls * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
34 1.2.6.2 tls * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 1.2.6.2 tls * SUCH DAMAGE.
36 1.2.6.2 tls *
37 1.2.6.2 tls * @(#)ufs_disksubr.c 8.1 (Berkeley) 6/10/93
38 1.2.6.2 tls */
39 1.2.6.2 tls /*
40 1.2.6.2 tls * Copyright (c) 1992, 1993
41 1.2.6.2 tls * The Regents of the University of California. All rights reserved.
42 1.2.6.2 tls *
43 1.2.6.2 tls * This code is derived from software contributed to Berkeley by
44 1.2.6.2 tls * OMRON Corporation.
45 1.2.6.2 tls *
46 1.2.6.2 tls * Redistribution and use in source and binary forms, with or without
47 1.2.6.2 tls * modification, are permitted provided that the following conditions
48 1.2.6.2 tls * are met:
49 1.2.6.2 tls * 1. Redistributions of source code must retain the above copyright
50 1.2.6.2 tls * notice, this list of conditions and the following disclaimer.
51 1.2.6.2 tls * 2. Redistributions in binary form must reproduce the above copyright
52 1.2.6.2 tls * notice, this list of conditions and the following disclaimer in the
53 1.2.6.2 tls * documentation and/or other materials provided with the distribution.
54 1.2.6.2 tls * 3. Neither the name of the University nor the names of its contributors
55 1.2.6.2 tls * may be used to endorse or promote products derived from this software
56 1.2.6.2 tls * without specific prior written permission.
57 1.2.6.2 tls *
58 1.2.6.2 tls * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
59 1.2.6.2 tls * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
60 1.2.6.2 tls * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
61 1.2.6.2 tls * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
62 1.2.6.2 tls * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
63 1.2.6.2 tls * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
64 1.2.6.2 tls * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
65 1.2.6.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
66 1.2.6.2 tls * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
67 1.2.6.2 tls * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
68 1.2.6.2 tls * SUCH DAMAGE.
69 1.2.6.2 tls *
70 1.2.6.2 tls * @(#)ufs_disksubr.c 8.1 (Berkeley) 6/10/93
71 1.2.6.2 tls */
72 1.2.6.2 tls
73 1.2.6.2 tls /*
74 1.2.6.2 tls * ufs_disksubr.c -- disk utility routines
75 1.2.6.2 tls * by A.Fujita, FEB-26-1992
76 1.2.6.2 tls */
77 1.2.6.2 tls
78 1.2.6.2 tls #include <sys/param.h>
79 1.2.6.2 tls #include <sys/disklabel.h>
80 1.2.6.2 tls #include <luna68k/stand/boot/samachdep.h>
81 1.2.6.2 tls #include <luna68k/stand/boot/scsireg.h>
82 1.2.6.2 tls
83 1.2.6.2 tls /*
84 1.2.6.2 tls * Attempt to read a disk label from a device
85 1.2.6.2 tls * using the indicated stategy routine.
86 1.2.6.2 tls * The label must be partly set up before this:
87 1.2.6.2 tls * secpercyl and anything required in the strategy routine
88 1.2.6.2 tls * (e.g., sector size) must be filled in before calling us.
89 1.2.6.2 tls * Returns null on success and an error string on failure.
90 1.2.6.2 tls */
91 1.2.6.2 tls char *
92 1.2.6.2 tls readdisklabel(int ctlr, int id, struct disklabel *lp)
93 1.2.6.2 tls {
94 1.2.6.2 tls u_char *bp = lbl_buff;
95 1.2.6.2 tls struct disklabel *dlp;
96 1.2.6.2 tls char *msg = NULL;
97 1.2.6.2 tls static struct scsi_fmt_cdb cdb = {
98 1.2.6.2 tls 6,
99 1.2.6.2 tls { CMD_READ, 0, 0, 0, 1, 0 }
100 1.2.6.2 tls };
101 1.2.6.2 tls
102 1.2.6.2 tls if (lp->d_secperunit == 0)
103 1.2.6.2 tls lp->d_secperunit = 0x1fffffff;
104 1.2.6.2 tls lp->d_npartitions = 1;
105 1.2.6.2 tls if (lp->d_partitions[0].p_size == 0)
106 1.2.6.2 tls lp->d_partitions[0].p_size = 0x1fffffff;
107 1.2.6.2 tls lp->d_partitions[0].p_offset = 0;
108 1.2.6.2 tls
109 1.2.6.2 tls if (scsi_immed_command(ctlr, id, 0, &cdb, bp, DEV_BSIZE) != 0) {
110 1.2.6.2 tls msg = "I/O error";
111 1.2.6.2 tls } else {
112 1.2.6.2 tls for (dlp = (struct disklabel *)bp;
113 1.2.6.2 tls dlp <= (struct disklabel *)(bp + DEV_BSIZE - sizeof(*dlp));
114 1.2.6.2 tls dlp = (struct disklabel *)((char *)dlp + sizeof(long))) {
115 1.2.6.2 tls if (dlp->d_magic != DISKMAGIC || dlp->d_magic2 != DISKMAGIC) {
116 1.2.6.2 tls if (msg == NULL)
117 1.2.6.2 tls msg = "no disk label";
118 1.2.6.2 tls } else if (dlp->d_npartitions > MAXPARTITIONS ||
119 1.2.6.2 tls dkcksum(dlp) != 0)
120 1.2.6.2 tls msg = "disk label corrupted";
121 1.2.6.2 tls else {
122 1.2.6.2 tls *lp = *dlp;
123 1.2.6.2 tls msg = NULL;
124 1.2.6.2 tls break;
125 1.2.6.2 tls }
126 1.2.6.2 tls }
127 1.2.6.2 tls }
128 1.2.6.2 tls
129 1.2.6.2 tls return (msg);
130 1.2.6.2 tls }
131