1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate * CDDL HEADER START
3*0Sstevel@tonic-gate *
4*0Sstevel@tonic-gate * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
7*0Sstevel@tonic-gate * with the License.
8*0Sstevel@tonic-gate *
9*0Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate * and limitations under the License.
13*0Sstevel@tonic-gate *
14*0Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate *
20*0Sstevel@tonic-gate * CDDL HEADER END
21*0Sstevel@tonic-gate */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate * Copyright 1994-1996, 2002-2003 Sun Microsystems, Inc. All rights reserved.
24*0Sstevel@tonic-gate * Use is subject to license terms.
25*0Sstevel@tonic-gate */
26*0Sstevel@tonic-gate
27*0Sstevel@tonic-gate #pragma ident "%Z%%M% %I% %E% SMI"
28*0Sstevel@tonic-gate
29*0Sstevel@tonic-gate #include <sys/param.h>
30*0Sstevel@tonic-gate #include <sys/vnode.h>
31*0Sstevel@tonic-gate #include <sys/fs/ufs_fsdir.h>
32*0Sstevel@tonic-gate #include <sys/fs/ufs_fs.h>
33*0Sstevel@tonic-gate #include <sys/fs/ufs_inode.h>
34*0Sstevel@tonic-gate #include <sys/sysmacros.h>
35*0Sstevel@tonic-gate #include <sys/promif.h>
36*0Sstevel@tonic-gate #include <sys/filep.h>
37*0Sstevel@tonic-gate #include <sys/salib.h>
38*0Sstevel@tonic-gate
39*0Sstevel@tonic-gate static char prom_dev_type = 0;
40*0Sstevel@tonic-gate
41*0Sstevel@tonic-gate /*
42*0Sstevel@tonic-gate * unix root slice offset for PROMS that do
43*0Sstevel@tonic-gate * not know about fdisk partitions or Solaris
44*0Sstevel@tonic-gate * slices.
45*0Sstevel@tonic-gate * the default is 0 for machines with proms that
46*0Sstevel@tonic-gate * do know how to interpret solaris slices.
47*0Sstevel@tonic-gate */
48*0Sstevel@tonic-gate unsigned long unix_startblk = 0;
49*0Sstevel@tonic-gate
50*0Sstevel@tonic-gate /*
51*0Sstevel@tonic-gate * The various flavors of PROM make this grotesque.
52*0Sstevel@tonic-gate */
53*0Sstevel@tonic-gate int
diskread(fileid_t * filep)54*0Sstevel@tonic-gate diskread(fileid_t *filep)
55*0Sstevel@tonic-gate {
56*0Sstevel@tonic-gate int err;
57*0Sstevel@tonic-gate devid_t *devp;
58*0Sstevel@tonic-gate uint_t blocknum;
59*0Sstevel@tonic-gate
60*0Sstevel@tonic-gate /* add in offset of root slice */
61*0Sstevel@tonic-gate blocknum = filep->fi_blocknum + unix_startblk;
62*0Sstevel@tonic-gate
63*0Sstevel@tonic-gate devp = filep->fi_devp;
64*0Sstevel@tonic-gate
65*0Sstevel@tonic-gate err = prom_seek(devp->di_dcookie,
66*0Sstevel@tonic-gate (unsigned long long)blocknum * (unsigned long long)DEV_BSIZE);
67*0Sstevel@tonic-gate if (err == -1) {
68*0Sstevel@tonic-gate printf("Seek error at block %x\n", blocknum);
69*0Sstevel@tonic-gate return (-1);
70*0Sstevel@tonic-gate }
71*0Sstevel@tonic-gate
72*0Sstevel@tonic-gate if ((err = prom_read(devp->di_dcookie, filep->fi_memp, filep->fi_count,
73*0Sstevel@tonic-gate blocknum, prom_dev_type)) != filep->fi_count) {
74*0Sstevel@tonic-gate printf("Short read. 0x%x chars read\n", err);
75*0Sstevel@tonic-gate return (-1);
76*0Sstevel@tonic-gate }
77*0Sstevel@tonic-gate
78*0Sstevel@tonic-gate return (0);
79*0Sstevel@tonic-gate }
80