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/*
* This file has been modified for the cdrkit suite.
*
* The behaviour and appearence of the program code below can differ to a major
* extent from the version distributed by the original author(s).
*
* For details, see Changelog file distributed with the cdrkit package. If you
* received this file from another source then ask the distributing person for
* a log of modifications.
*
*/
/* @(#)scsi.c 1.20 05/05/01 Copyright 1997 J. Schilling */
/*
* Copyright (c) 1997 J. Schilling
*/
/*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along with
* this program; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef USE_SCG
#include <mconfig.h>
#include <stdio.h>
#include <standard.h>
#include <stdxlib.h>
#include <unixstd.h>
#include <schily.h>
#include "genisoimage.h"
#include <usal/scsireg.h>
#include <usal/scsitransp.h>
#include "wodim.h"
#include "../wodim/defaults.h"
/*
* NOTICE: You should not make BUF_SIZE more than
* the buffer size of the CD-Recorder.
*
* Do not set BUF_SIZE to be more than 126 KBytes
* if you are running cdrecord on a sun4c machine.
*
* WARNING: Philips CDD 521 dies if BUF_SIZE is to big.
*/
#define BUF_SIZE (62*1024) /* Must be a multiple of 2048 */
static SCSI *usalp;
static long bufsize; /* The size of the transfer buffer */
int readsecs(int startsecno, void *buffer, int sectorcount);
int scsidev_open(char *path);
int scsidev_close(void);
int
readsecs(int startsecno, void *buffer, int sectorcount)
{
int f;
int secsize; /* The drive's SCSI sector size */
long amount; /* The number of bytes to be transfered */
long secno; /* The sector number to read from */
long secnum; /* The number of sectors to read */
char *bp;
long amt;
if (in_image == NULL) {
/*
* We are using the standard CD-ROM sectorsize of 2048 bytes
* while the drive may be switched to 512 bytes per sector.
*
* XXX We assume that secsize is no more than SECTOR_SIZE
* XXX and that SECTOR_SIZE / secsize is not a fraction.
*/
secsize = usalp->cap->c_bsize;
amount = sectorcount * SECTOR_SIZE;
secno = startsecno * (SECTOR_SIZE / secsize);
bp = buffer;
while (amount > 0) {
amt = amount;
if (amount > bufsize)
amt = bufsize;
secnum = amt / secsize;
if (read_scsi(usalp, bp, secno, secnum) < 0 ||
usal_getresid(usalp) != 0) {
#ifdef OLD
return (-1);
#else
comerr("Read error on old image\n");
#endif
}
amount -= secnum * secsize;
bp += secnum * secsize;
secno += secnum;
}
return (SECTOR_SIZE * sectorcount);
}
f = fileno(in_image);
if (lseek(f, (off_t)startsecno * SECTOR_SIZE, SEEK_SET) == (off_t)-1) {
#ifdef USE_LIBSCHILY
comerr("Seek error on old image\n");
#else
fprintf(stderr, "Seek error on old image\n");
exit(10);
#endif
}
if ((amt = read(f, buffer, (sectorcount * SECTOR_SIZE)))
!= (sectorcount * SECTOR_SIZE)) {
#ifdef USE_LIBSCHILY
if (amt < 0)
comerr("Read error on old image\n");
comerrno(EX_BAD, "Short read on old image\n"); /* < secnt aber > 0 */
#else
if (amt < 0)
fprintf(stderr, "Read error on old image\n");
else
fprintf(stderr, "Short read on old image\n");
exit(10);
#endif
}
return (sectorcount * SECTOR_SIZE);
}
int
scsidev_open(char *path)
{
char errstr[80];
char *buf; /* ignored, bit OS/2 ASPI layer needs memory which */
/* has been allocated by scsi_getbuf() */
/*
* Call usal_remote() to force loading the remote SCSI transport library
* code that is located in librusal instead of the dummy remote routines
* that are located inside libusal.
*/
usal_remote();
cdr_defaults(&path, NULL, NULL, NULL);
/* path, debug, verboseopen */
usalp = usal_open(path, errstr, sizeof (errstr), 0, 0);
if (usalp == 0) {
errmsg("%s%sCannot open SCSI driver.\n", errstr, errstr[0]?". ":"");
return (-1);
}
bufsize = usal_bufsize(usalp, BUF_SIZE);
if ((buf = usal_getbuf(usalp, bufsize)) == NULL) {
errmsg("Cannot get SCSI I/O buffer.\n");
usal_close(usalp);
return (-1);
}
bufsize = (bufsize / SECTOR_SIZE) * SECTOR_SIZE;
allow_atapi(usalp, TRUE);
if (!wait_unit_ready(usalp, 60)) { /* Eat Unit att / Wait for drive */
usalp->silent--;
return (-1);
}
usalp->silent++;
read_capacity(usalp); /* Set Capacity/Sectorsize for I/O */
usalp->silent--;
return (1);
}
int
scsidev_close()
{
if (in_image == NULL) {
return (usal_close(usalp));
} else {
return (fclose(in_image));
}
}
#endif /* USE_SCG */
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