New upstream version 0.79.5
This commit is contained in:
161
scsi-linux.c
161
scsi-linux.c
@@ -1,22 +1,23 @@
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/* dvdisaster: Additional error correction for optical media.
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* Copyright (C) 2004-2012 Carsten Gnoerlich.
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* Project home page: http://www.dvdisaster.com
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* Email: carsten@dvdisaster.com -or- cgnoerlich@fsfe.org
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* Copyright (C) 2004-2015 Carsten Gnoerlich.
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*
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* This program is free software; you can redistribute it and/or modify
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* Email: carsten@dvdisaster.org -or- cgnoerlich@fsfe.org
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* Project homepage: http://www.dvdisaster.org
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*
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* This file is part of dvdisaster.
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*
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* dvdisaster is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* dvdisaster is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA,
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* or direct your browser at http://www.gnu.org.
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* along with dvdisaster. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "dvdisaster.h"
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@@ -25,7 +26,7 @@
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#include "udf.h"
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/***
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*** The Linux SCSI wrapper. Uses the uniform CDROM driver. Kernel 2.6.x recommended.
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*** The GNU/Linux SCSI wrapper. Uses the uniform CDROM driver. Kernel 2.6.x recommended.
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***/
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#ifdef SYS_LINUX
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@@ -38,6 +39,12 @@ char* DefaultDevice()
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const char* dev;
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int dev_type;
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/* As a convenience, add the simulated drive first. */
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InitSimulatedCD();
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/* Now probe the physical drives. */
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dir = g_dir_open("/dev", 0, NULL);
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if(!dir)
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@@ -51,8 +58,7 @@ char* DefaultDevice()
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while((dev = g_dir_read_name(dir)))
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{
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if( (strlen(dev) == 3 && (!strncmp(dev,"hd",2) || !strncmp(dev,"sd",2) || !strncmp(dev,"sr", 2)))
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|| (strlen(dev) == 4 && !strncmp(dev,"scd",3)) )
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if(!strncmp(dev,"scd",3) || !strncmp(dev,"sr", 2))
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{ char buf[80];
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sprintf(buf,"/dev/%s", dev);
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@@ -82,7 +88,7 @@ char* DefaultDevice()
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if(Closure->deviceNodes->len)
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return g_strdup(g_ptr_array_index(Closure->deviceNodes, 0));
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else
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{ PrintLog(_("No CD/DVD drives found in /dev.\n"
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{ PrintLog(_("No optical drives found in /dev.\n"
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"No drives will be pre-selected.\n"));
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return g_strdup("/dev/cdrom");
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@@ -91,88 +97,45 @@ char* DefaultDevice()
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DeviceHandle* OpenDevice(char *device)
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{ DeviceHandle *dh;
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AlignedBuffer *ab;
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Sense *sense;
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unsigned char cmd[MAX_CDB_SIZE];
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int length;
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int phy_int_std;
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dh = g_malloc0(sizeof(DeviceHandle));
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dh->fd = open(device, O_RDWR | O_NONBLOCK);
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if(dh->fd < 0)
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{ g_free(dh);
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Stop(_("Could not open %s: %s"),device, strerror(errno));
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return NULL;
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dh->senseSize = sizeof(Sense);
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if(!strcmp(device, "sim-cd"))
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{ if(!Closure->simulateCD) /* can happen via resource file / last-device */
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{ g_free(dh);
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return NULL;
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}
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dh->simImage = LargeOpen(Closure->simulateCD, O_RDONLY, IMG_PERMS);
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if(!dh->simImage)
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{ g_free(dh);
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Stop(_("Could not open %s: %s"), Closure->simulateCD, strerror(errno));
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return NULL;
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}
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}
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else
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{ dh->fd = open(device, O_RDWR | O_NONBLOCK);
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if(dh->fd < 0)
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{ g_free(dh);
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Stop(_("Could not open %s: %s"),device, strerror(errno));
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return NULL;
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}
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}
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dh->device = g_strdup(device);
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/*** Probe for parallel SCSI.
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We can't use the CDROM_SEND_PACKET ioctl with it. */
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Verbose("# *** OpenDevice(%s) - GET CONFIGURATION ***\n", device);
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length = 2048;
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ab = CreateAlignedBuffer(length);
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sense = &dh->sense;
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/* Query length of returned data */
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memset(cmd, 0, MAX_CDB_SIZE);
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cmd[0] = 0x46; /* GET CONFIGURATION */
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cmd[1] = 0x02; /* only specified feature */
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cmd[2] = 0;
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cmd[3] = 1; /* we want the core feature (0x0001) */
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cmd[7] = length>>8;
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cmd[8] = length&0xff; /* Allocation length */
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if(SendPacket(dh, cmd, 10, ab->buf, length, sense, DATA_READ)<0)
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{
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FreeAlignedBuffer(ab);
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Verbose("# failed -> could not get core feature: %s\n",
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GetSenseString(sense->sense_key, sense->asc, sense->ascq, 0));
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if(Closure->useSCSIDriver == DRIVER_CDROM_FORCED)
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Verbose("# Would like to play it safe, but CDROM_SEND_PACKET ioctl()\n"
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"# forced via command line. Prepare for wreckage.\n");
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else
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{ Verbose("# Playing it safe. Forcing use of SG_IO ioctl().\n");
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dh->forceSG_IO = TRUE;
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}
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return dh;
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}
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length = ab->buf[0]<<24 | ab->buf[1] | ab->buf[2] | ab->buf[3];
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if(length < 12)
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{ FreeAlignedBuffer(ab);
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Verbose("# failed -> invalid length for core feature: %d\n", length);
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return dh;
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}
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phy_int_std = ab->buf[12]<<24 | ab->buf[13]<<16 | ab->buf[14]<<8 | ab->buf[15];
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Verbose("# physical interface standard: %d\n", phy_int_std);
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switch(phy_int_std)
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{ case 2: Verbose("# ATAPI. Hopefully not behind a bridge.\n");
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break;
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case 1: if(Closure->useSCSIDriver == DRIVER_CDROM_FORCED)
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Verbose("# SCSI, but CDROM_SEND_PACKET ioctl() forced via command line.\n"
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"# Prepare for wreckage.\n");
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else
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{ Verbose("# SCSI. Forcing use of SG_IO ioctl().\n");
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dh->forceSG_IO = TRUE;
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}
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break;
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}
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FreeAlignedBuffer(ab);
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return dh;
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}
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void CloseDevice(DeviceHandle *dh)
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{
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if(dh->simImage)
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LargeClose(dh->simImage);
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if(dh->canReadDefective)
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SetRawMode(dh, MODE_PAGE_UNSET);
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@@ -183,14 +146,10 @@ void CloseDevice(DeviceHandle *dh)
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close(dh->fd);
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if(dh->device)
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g_free(dh->device);
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if(dh->rs02Header)
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g_free(dh->rs02Header);
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if(dh->typeDescr)
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g_free(dh->typeDescr);
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if(dh->mediumDescr)
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g_free(dh->mediumDescr);
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if(dh->isoInfo)
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FreeIsoInfo(dh->isoInfo);
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if(dh->defects)
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FreeBitmap(dh->defects);
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g_free(dh);
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@@ -271,7 +230,7 @@ static void test_cdb(unsigned char *cdb, int cdb_size, int direction)
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* The CDROM ioctl() interface has been used since the first dvdisaster release.
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* However with recent 2.6 kernels it seems to become outdated - several parallel
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* SCSI cards are already exhibiting failures using this interface.
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* Starting with dvdisaster 0.72.2 and 0.79.3, the SG_IO interface has become
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* Starting with dvdisaster 0.79.3, the SG_IO interface has become
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* the default now. You can revert back to old behaviour using --driver=cdrom.
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*/
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@@ -279,12 +238,12 @@ static int send_packet_cdrom(DeviceHandle *dh, unsigned char *cmd, int cdb_size,
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{ struct cdrom_generic_command cgc;
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#ifdef ASSERT_CDB_LENGTH
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test_cdb(cmd, cdb_size, data_mode);
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test_cdb(cmd, cdb_size, data_mode);
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#endif
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memset(&cgc, 0, sizeof(cgc));
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memcpy(cgc.cmd, cmd, MAX_CDB_SIZE); /* Linux ignores the CDB size */
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memcpy(cgc.cmd, cmd, MAX_CDB_SIZE); /* GNU/Linux ignores the CDB size */
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cgc.buffer = buf;
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cgc.buflen = size;
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cgc.sense = (struct request_sense*)sense;
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@@ -318,7 +277,7 @@ static int send_packet_generic(DeviceHandle *dh, unsigned char *cmd, int cdb_siz
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{ struct sg_io_hdr sg_io;
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#ifdef ASSERT_CDB_LENGTH
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test_cdb(cmd, cdb_size, data_mode);
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test_cdb(cmd, cdb_size, data_mode);
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#endif
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memset(&sg_io, 0, sizeof(sg_io));
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@@ -367,26 +326,16 @@ static int send_packet_generic(DeviceHandle *dh, unsigned char *cmd, int cdb_siz
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}
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int SendPacket(DeviceHandle *dh, unsigned char *cmd, int cdb_size, unsigned char *buf, int size, Sense *sense, int data_mode)
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{ int driver = Closure->useSCSIDriver;
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{
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if(dh->simImage)
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return SimulateSendPacket(dh, cmd, cdb_size, buf, size, sense, data_mode);
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/* Using the CDROM_SEND_PACKET ioctl kills parallel SCSI adapters.
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Redirect the necessary probing commands to the SG_IO driver. */
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if( (cmd[0] == 0x46 || cmd[0] == 0x12) && driver != DRIVER_CDROM_FORCED)
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driver = DRIVER_SG;
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if(dh->forceSG_IO)
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driver = DRIVER_SG;
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/* dispatch to appropriate driver */
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switch(driver)
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switch(Closure->useSCSIDriver)
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{
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case DRIVER_SG:
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return send_packet_generic(dh, cmd, cdb_size, buf, size, sense, data_mode);
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case DRIVER_CDROM_DEFAULT:
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case DRIVER_CDROM_FORCED:
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case DRIVER_CDROM:
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return send_packet_cdrom(dh, cmd, cdb_size, buf, size, sense, data_mode);
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default:
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