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 1994-1996, 2002-2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/param.h> 30 #include <sys/vnode.h> 31 #include <sys/fs/ufs_fsdir.h> 32 #include <sys/fs/ufs_fs.h> 33 #include <sys/fs/ufs_inode.h> 34 #include <sys/sysmacros.h> 35 #include <sys/promif.h> 36 #include <sys/filep.h> 37 #include <sys/salib.h> 38 39 static char prom_dev_type = 0; 40 41 /* 42 * unix root slice offset for PROMS that do 43 * not know about fdisk partitions or Solaris 44 * slices. 45 * the default is 0 for machines with proms that 46 * do know how to interpret solaris slices. 47 */ 48 unsigned long unix_startblk = 0; 49 50 /* 51 * The various flavors of PROM make this grotesque. 52 */ 53 int 54 diskread(fileid_t *filep) 55 { 56 int err; 57 devid_t *devp; 58 uint_t blocknum; 59 60 /* add in offset of root slice */ 61 blocknum = filep->fi_blocknum + unix_startblk; 62 63 devp = filep->fi_devp; 64 65 err = prom_seek(devp->di_dcookie, 66 (unsigned long long)blocknum * (unsigned long long)DEV_BSIZE); 67 if (err == -1) { 68 printf("Seek error at block %x\n", blocknum); 69 return (-1); 70 } 71 72 if ((err = prom_read(devp->di_dcookie, filep->fi_memp, filep->fi_count, 73 blocknum, prom_dev_type)) != filep->fi_count) { 74 printf("Short read. 0x%x chars read\n", err); 75 return (-1); 76 } 77 78 return (0); 79 } 80