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      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  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
     23  * Use is subject to license terms.
     24  */
     25 
     26 /*
     27  * This file contains functions that implement the fdisk menu commands.
     28  */
     29 #include "global.h"
     30 #include <sys/time.h>
     31 #include <sys/resource.h>
     32 #include <sys/wait.h>
     33 #include <signal.h>
     34 #include <string.h>
     35 #include <sys/fcntl.h>
     36 #include <sys/stat.h>
     37 
     38 #include <sys/dklabel.h>
     39 #include <errno.h>
     40 
     41 
     42 #include "main.h"
     43 #include "analyze.h"
     44 #include "menu.h"
     45 #include "menu_command.h"
     46 #include "menu_defect.h"
     47 #include "menu_partition.h"
     48 #if defined(_FIRMWARE_NEEDS_FDISK)
     49 #include "menu_fdisk.h"
     50 #endif	/* defined(_FIRMWARE_NEEDS_FDISK) */
     51 #include "param.h"
     52 #include "misc.h"
     53 #include "label.h"
     54 #include "startup.h"
     55 #include "partition.h"
     56 #include "prompts.h"
     57 #include "checkdev.h"
     58 #include "io.h"
     59 #include "ctlr_scsi.h"
     60 #include "auto_sense.h"
     61 
     62 #ifdef	__STDC__
     63 /*
     64  *	Local prototypes for ANSI C compilers
     65  */
     66 static int	generic_ck_format(void);
     67 static int	generic_rdwr(int dir, int fd, diskaddr_t blkno, int secnt,
     68 			caddr_t bufaddr, int flags, int *xfercntp);
     69 #else	/* __STDC__ */
     70 
     71 static int	generic_ck_format();
     72 static int	generic_rdwr();
     73 
     74 #endif	/* __STDC__ */
     75 
     76 struct  ctlr_ops genericops = {
     77 	generic_rdwr,
     78 	generic_ck_format,
     79 	0,
     80 	0,
     81 	0,
     82 	0,
     83 	0,
     84 };
     85 
     86 
     87 /*
     88  * Check to see if the disk has been formatted.
     89  * If we are able to read the first track, we conclude that
     90  * the disk has been formatted.
     91  */
     92 static int
     93 generic_ck_format()
     94 {
     95 	int	status;
     96 
     97 	/*
     98 	 * Try to read the first four blocks.
     99 	 */
    100 	status = generic_rdwr(DIR_READ, cur_file, 0, 4, (caddr_t)cur_buf,
    101 	    F_SILENT, NULL);
    102 	return (!status);
    103 }
    104 
    105 /*
    106  * Read or write the disk.
    107  * Temporary interface until IOCTL interface finished.
    108  */
    109 /*ARGSUSED*/
    110 static int
    111 generic_rdwr(dir, fd, blkno, secnt, bufaddr, flags, xfercntp)
    112 	int	dir;
    113 	int	fd;
    114 	diskaddr_t	blkno;
    115 	int	secnt;
    116 	caddr_t	bufaddr;
    117 	int	flags;
    118 	int	*xfercntp;
    119 {
    120 
    121 	offset_t	tmpsec, status, tmpblk;
    122 	int		ret;
    123 
    124 	tmpsec = (offset_t)secnt * cur_blksz;
    125 	tmpblk = (offset_t)blkno * cur_blksz;
    126 
    127 #if defined(_FIRMWARE_NEEDS_FDISK)
    128 	/* Use "p0" file to seek/read the data  */
    129 	(void) open_cur_file(FD_USE_P0_PATH);
    130 #endif
    131 	if (dir == DIR_READ) {
    132 		status = llseek(fd, tmpblk, SEEK_SET);
    133 		if (status != tmpblk) {
    134 			ret = (int)status;
    135 			goto out;
    136 		}
    137 
    138 		status = read(fd, bufaddr, (size_t)tmpsec);
    139 		if (status != tmpsec)
    140 			ret = (int)tmpsec;
    141 		else
    142 			ret = 0;
    143 	} else {
    144 		status = llseek(fd, tmpblk, SEEK_SET);
    145 		if (status != tmpblk) {
    146 			ret = (int)status;
    147 			goto out;
    148 		}
    149 
    150 		status = write(fd, bufaddr, (size_t)tmpsec);
    151 		if (status != tmpsec)
    152 			ret = (int)tmpsec;
    153 		else
    154 			ret = 0;
    155 	}
    156 out:
    157 #if defined(_FIRMWARE_NEEDS_FDISK)
    158 	/* Restore cur_file with cur_disk->disk_path */
    159 	(void) open_cur_file(FD_USE_CUR_DISK_PATH);
    160 #endif
    161 	return (ret);
    162 }
    163