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/* $NetBSD: scsi-netbsd.c,v 1.2 2009/03/22 09:30:39 wiz Exp $ */
/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
* Libbrasero-media
* Copyright (C) Philippe Rouquier 2005-2009 <bonfire-app@wanadoo.fr>
* Jared D. McNeill 2009 <jmcneill@NetBSD.org>
*
* Libbrasero-media 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 2 of the License, or
* (at your option) any later version.
*
* The Libbrasero-media authors hereby grant permission for non-GPL compatible
* GStreamer plugins to be used and distributed together with GStreamer
* and Libbrasero-media. This permission is above and beyond the permissions granted
* by the GPL license by which Libbrasero-media is covered. If you modify this code
* you may extend this exception to your version of the code, but you are not
* obligated to do so. If you do not wish to do so, delete this exception
* statement from your version.
*
* Libbrasero-media 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 Library General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to:
* The Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301, USA.
*/
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <unistd.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <string.h>
#include <sys/ioctl.h>
#include <sys/scsiio.h>
#include "brasero-media-private.h"
#include "scsi-command.h"
#include "scsi-utils.h"
#include "scsi-error.h"
#include "scsi-sense-data.h"
struct _BraseroDeviceHandle {
int fd;
};
struct _BraseroScsiCmd {
uchar cmd [BRASERO_SCSI_CMD_MAX_LEN];
BraseroDeviceHandle *handle;
const BraseroScsiCmdInfo *info;
};
typedef struct _BraseroScsiCmd BraseroScsiCmd;
#define BRASERO_SCSI_CMD_OPCODE_OFF 0
#define BRASERO_SCSI_CMD_SET_OPCODE(command) (command->cmd [BRASERO_SCSI_CMD_OPCODE_OFF] = command->info->opcode)
#define OPEN_FLAGS (O_RDWR|O_NONBLOCK)
#define SCSIREQ_TIMEOUT (30 * 1000)
/**
* This is to send a command
*/
static void
brasero_sg_command_setup (scsireq_t *req,
BraseroScsiCmd *cmd,
uchar *buffer,
int size)
{
memset (req, 0, sizeof (scsireq_t));
req->cmdlen = cmd->info->size;
memcpy(req->cmd, cmd->cmd, req->cmdlen);
req->databuf = buffer;
req->datalen = size;
req->timeout = SCSIREQ_TIMEOUT;
/* where to output the scsi sense buffer */
req->senselen = BRASERO_SENSE_DATA_SIZE;
if (cmd->info->direction & BRASERO_SCSI_READ)
req->flags = SCCMD_READ;
else if (cmd->info->direction & BRASERO_SCSI_WRITE)
req->flags = SCCMD_WRITE;
}
BraseroScsiResult
brasero_scsi_command_issue_sync (gpointer command,
gpointer buffer,
int size,
BraseroScsiErrCode *error)
{
scsireq_t req;
BraseroScsiResult res;
BraseroScsiCmd *cmd;
cmd = command;
brasero_sg_command_setup (&req,
cmd,
buffer,
size);
res = ioctl (cmd->handle->fd, SCIOCCOMMAND, &req);
if (res == -1) {
BRASERO_SCSI_SET_ERRCODE (error, BRASERO_SCSI_ERRNO);
return BRASERO_SCSI_FAILURE;
}
if (req.retsts == SCCMD_OK)
return BRASERO_SCSI_OK;
if (req.retsts == SCCMD_SENSE)
return brasero_sense_data_process (req.sense, error);
return BRASERO_SCSI_FAILURE;
}
gpointer
brasero_scsi_command_new (const BraseroScsiCmdInfo *info,
BraseroDeviceHandle *handle)
{
BraseroScsiCmd *cmd;
/* make sure we can set the flags of the descriptor */
/* allocate the command */
cmd = g_new0 (BraseroScsiCmd, 1);
cmd->info = info;
cmd->handle = handle;
BRASERO_SCSI_CMD_SET_OPCODE (cmd);
return cmd;
}
BraseroScsiResult
brasero_scsi_command_free (gpointer cmd)
{
g_free (cmd);
return BRASERO_SCSI_OK;
}
/**
* This is to open a device
*/
BraseroDeviceHandle *
brasero_device_handle_open (const gchar *path,
gboolean exclusive,
BraseroScsiErrCode *code)
{
int fd;
int flags = OPEN_FLAGS;
BraseroDeviceHandle *handle;
gchar *rdevnode;
if (exclusive)
flags |= O_EXCL;
rdevnode = g_strdup_printf ("/dev/r%s", path + strlen ("/dev/"));
fd = open (rdevnode, flags);
g_free (rdevnode);
if (fd < 0) {
if (code) {
if (errno == EAGAIN
|| errno == EWOULDBLOCK
|| errno == EBUSY)
*code = BRASERO_SCSI_NOT_READY;
else
*code = BRASERO_SCSI_ERRNO;
}
return NULL;
}
handle = g_new (BraseroDeviceHandle, 1);
handle->fd = fd;
return handle;
}
void
brasero_device_handle_close (BraseroDeviceHandle *handle)
{
close (handle->fd);
g_free (handle);
}
char *
brasero_device_get_bus_target_lun (const gchar *device)
{
return strdup (device);
}
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