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/* dvdisaster: Additional error correction for optical media.
* Copyright (C) 2004-2015 Carsten Gnoerlich.
*
* Email: carsten@dvdisaster.org -or- cgnoerlich@fsfe.org
* Project homepage: http://www.dvdisaster.org
*
* This file is part of dvdisaster.
*
* dvdisaster is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* dvdisaster 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 dvdisaster. If not, see <http://www.gnu.org/licenses/>.
*/
#include "dvdisaster.h"
#include "scsi-layer.h"
#include "udf.h"
#if defined(SYS_FREEBSD) || defined(SYS_KFREEBSD)
/* SCSI wrappers for FreeBSD are still work in progress. */
char* DefaultDevice()
{ DeviceHandle *dh;
GDir *dir;
const char* dev;
int dev_type;
/* As a convenience, add the simulated drive first. */
InitSimulatedCD();
/*** Look for suitable devices */
dir = g_dir_open("/dev", 0, NULL);
if(!dir)
{ PrintLog(_("Can not access /dev for devices\n"
"No drives will be pre-selected.\n"));
return g_strdup("no_drives");
}
dh = g_malloc(sizeof(DeviceHandle));
/* iterate through /dev/pass<n> */
while((dev = g_dir_read_name(dir)))
{
if(!strncmp(dev,"pass",4))
{ char buf[80];
sprintf(buf,"/dev/%s", dev);
memset(dh, 0, sizeof(DeviceHandle));
/* see if we can open it */
dh->camdev = cam_open_pass(buf, O_RDWR, NULL);
dh->device = buf;
if(!dh->camdev) /* device not even present */
continue;
dh->ccb = cam_getccb(dh->camdev);
if(!dh->ccb)
continue;
/* make sure its a CDROM type drive */
dev_type = InquireDevice(dh, 1);
cam_freeccb(dh->ccb);
cam_close_device(dh->camdev);
if(dev_type != 5) /* not a CD/DVD ROM */
continue;
/* remember it in our device list */
g_ptr_array_add(Closure->deviceNodes, g_strdup(buf));
sprintf(buf, "%s (/dev/%s)", dh->devinfo, dev);
g_ptr_array_add(Closure->deviceNames, g_strdup(buf));
}
}
g_dir_close(dir);
g_free(dh);
if(Closure->deviceNodes->len)
return g_strdup(g_ptr_array_index(Closure->deviceNodes, 0));
else
{ PrintLog(_("No optical drives found in /dev.\n"
"No drives will be pre-selected.\n"));
return g_strdup("no_drives");
}
}
DeviceHandle* OpenDevice(char *device)
{ DeviceHandle *dh;
dh = g_malloc0(sizeof(DeviceHandle));
/* Make sure we do not overrun any memory due
to differently sized sense structures */
dh->senseSize = sizeof(Sense);
if(dh->senseSize > sizeof(struct scsi_sense_data))
dh->senseSize = sizeof(struct scsi_sense_data);
if(!strcmp(device, "sim-cd"))
{ if(!Closure->simulateCD) /* can happen via resource file / last-device */
{ g_free(dh);
return NULL;
}
dh->simImage = LargeOpen(Closure->simulateCD, O_RDONLY, IMG_PERMS);
if(!dh->simImage)
{ g_free(dh);
Stop(_("Could not open %s: %s"), Closure->simulateCD, strerror(errno));
return NULL;
}
}
else
{ dh->camdev = cam_open_pass(device, O_RDWR, NULL);
if(!dh->camdev)
{ g_free(dh);
Stop(_("Could not open %s: %s"),device, strerror(errno));
return NULL;
}
dh->ccb = cam_getccb(dh->camdev);
if(!dh->ccb)
{ cam_close_device(dh->camdev);
g_free(dh);
Stop("Could not allocate ccb for %s", device);
return NULL;
}
}
dh->device = g_strdup(device);
return dh;
}
void CloseDevice(DeviceHandle *dh)
{
if(dh->canReadDefective)
SetRawMode(dh, MODE_PAGE_UNSET);
if(dh->rawBuffer)
FreeRawBuffer(dh->rawBuffer);
if(dh->ccb)
cam_freeccb(dh->ccb);
if(dh->camdev)
cam_close_device(dh->camdev);
if(dh->device)
g_free(dh->device);
if(dh->typeDescr)
g_free(dh->typeDescr);
if(dh->mediumDescr)
g_free(dh->mediumDescr);
if(dh->defects)
FreeBitmap(dh->defects);
g_free(dh);
}
int SendPacket(DeviceHandle *dh, unsigned char *cmd, int cdb_size, unsigned char *buf, int size, Sense *sense, int data_mode)
{ union ccb *ccb = dh->ccb;
u_int32_t flags = 0;
if(dh->simImage)
return SimulateSendPacket(dh, cmd, cdb_size, buf, size, sense, data_mode);
bzero(&(&ccb->ccb_h)[1],
sizeof(struct ccb_scsiio) - sizeof(struct ccb_hdr));
switch(data_mode)
{ case DATA_READ:
flags = CAM_DIR_IN;
break;
case DATA_WRITE:
flags = CAM_DIR_OUT;
break;
case DATA_NONE:
flags = CAM_DIR_NONE;
break;
default:
Stop("illegal data_mode: %d", data_mode);
}
cam_fill_csio(&ccb->csio, 1, NULL, flags, CAM_TAG_ACTION_NONE,//MSG_SIMPLE_Q_TAG,
buf, size, sizeof(struct scsi_sense_data), cdb_size,
120*1000); /* 120 secs timeout */
memcpy(ccb->csio.cdb_io.cdb_bytes, cmd, cdb_size);
/* Send ccb */
if(cam_send_ccb(dh->camdev, ccb) < 0)
{ printf("cam_send failed\n");
cam_error_print(dh->camdev, ccb, CAM_ESF_ALL, CAM_EPF_ALL, stderr);
return -1;
}
/* Extract sense data */
memcpy(sense, &(ccb->csio.sense_data), dh->senseSize);
if((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)
return 0;
/* See what went wrong (not covering all cases) */
switch(ccb->csio.scsi_status)
{ case 0x08: /* BUSY */
PrintLog("SendPacket: Target busy.\n");
break;
case 0x18: /* Reservation conflict */
PrintLog("SendPacket: Reservation conflict.\n");
break;
}
return -1;
}
#endif /* defined(SYS_FREEBSD) || defined(SYS_KFREEBSD) */
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