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Best guess of how to do scsi_mmc_run_cmd. Thanks to Steven M. Schultz

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rocky
2004-07-27 15:02:01 +00:00
parent ee9634bc43
commit 9b1b59144f
1 changed files with 87 additions and 4 deletions
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91
lib/_cdio_bsdi.c
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@@ -1,5 +1,5 @@
/*
$Id: _cdio_bsdi.c,v 1.30 2004/07/27 13:10:20 rocky Exp $
$Id: _cdio_bsdi.c,v 1.31 2004/07/27 15:02:01 rocky Exp $
Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2002, 2003, 2004 Rocky Bernstein <rocky@panix.com>
@@ -27,7 +27,7 @@
# include "config.h"
#endif
static const char _rcsid[] = "$Id: _cdio_bsdi.c,v 1.30 2004/07/27 13:10:20 rocky Exp $";
static const char _rcsid[] = "$Id: _cdio_bsdi.c,v 1.31 2004/07/27 15:02:01 rocky Exp $";
#include <cdio/sector.h>
#include <cdio/util.h>
@@ -54,6 +54,8 @@ static const char _rcsid[] = "$Id: _cdio_bsdi.c,v 1.30 2004/07/27 13:10:20 rocky
#include <sys/stat.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include </sys/dev/scsi/scsi.h>
#include </sys/dev/scsi/scsi_ioctl.h>
#define TOTAL_TRACKS (p_env->tochdr.cdth_trk1)
@@ -78,6 +80,86 @@ typedef struct {
} _img_private_t;
/* Define the Cdrom Generic Command structure */
typedef struct cgc
{
u_char cdb[12];
u_char *buf;
int buflen;
int rw;
int timeout;
scsi_user_sense_t *sus;
} cgc_t;
/*
This code adapted from Steven M. Schultz's libdvd
*/
static int
scsi_mmc_run_cmd_bsdi(const void *p_user_data, int i_timeout,
unsigned int i_cdb, const scsi_mmc_cdb_t *p_cdb,
scsi_mmc_direction_t e_direction,
unsigned int i_buf, /*in/out*/ void *p_buf )
{
const _img_private_t *p_env = p_user_data;
int i_status, i_asc;
struct scsi_user_cdb suc;
struct scsi_sense *sp;
again:
suc.suc_flags = SCSI_MMC_DATA_READ == e_direction ?
SUC_READ : SUC_WRITE;
suc.suc_cdblen = i_cdb;
memcpy(suc.suc_cdb, p_cdb, i_cdb);
suc.suc_data = p_buf;
suc.suc_datalen = i_buf;
suc.suc_timeout = i_timeout;
if (ioctl(p_env->gen.fd, SCSIRAWCDB, &suc) == -1)
return(errno);
i_status = suc.suc_sus.sus_status;
#if 0
/*
* If the device returns a scsi sense error and debugging is enabled print
* some hopefully useful information on stderr.
*/
if (i_status && debug)
{
unsigned char *cp;
int i;
cp = suc.suc_sus.sus_sense;
fprintf(stderr,"i_status = %x cdb =",
i_status);
for (i = 0; i < cdblen; i++)
fprintf(stderr, " %x", cgc->cdb[i]);
fprintf(stderr, "\nsense =");
for (i = 0; i < 16; i++)
fprintf(stderr, " %x", cp[i]);
fprintf(stderr, "\n");
}
#endif
/*
* HACK! Some drives return a silly "medium changed" on the first
* command AND a non-zero i_status which gets turned into a fatal
* (EIO) error even though the operation was a success. Retrying
* the operation clears the media changed status and gets the
* answer. */
sp = (struct scsi_sense *)&suc.suc_sus.sus_sense;
i_asc = XSENSE_ASC(sp);
if (i_status == STS_CHECKCOND && i_asc == 0x28)
goto again;
#if 0
if (cgc->sus)
memcpy(cgc->sus, &suc.suc_sus, sizeof (struct scsi_user_sense));
#endif
return(i_status);
}
/* Check a drive to see if it is a CD-ROM
Return 1 if a CD-ROM. 0 if it exists but isn't a CD-ROM drive
and -1 if no device exists .
@@ -713,7 +795,7 @@ cdio_open_bsdi (const char *psz_orig_source)
.get_arg = _get_arg_bsdi,
.get_default_device = cdio_get_default_device_bsdi,
.get_devices = cdio_get_devices_bsdi,
.get_drive_cap = NULL,
.get_drive_cap = scsi_mmc_get_drive_cap_generic,
.get_first_track_num= _get_first_track_num_bsdi,
.get_mcn = _get_mcn_bsdi,
.get_num_tracks = _get_num_tracks_bsdi,
@@ -728,6 +810,7 @@ cdio_open_bsdi (const char *psz_orig_source)
.read_mode1_sectors = _read_mode1_sectors_bsdi,
.read_mode2_sector = _read_mode2_sector_bsdi,
.read_mode2_sectors = _read_mode2_sectors_bsdi,
.run_scsi_mmc_cmd = scsi_mmc_run_cmd_bsdi,
.set_arg = _set_arg_bsdi,
.stat_size = _stat_size_bsdi
};
@@ -754,7 +837,7 @@ cdio_open_bsdi (const char *psz_orig_source)
}
}
ret = cdio_new (_data, &_funcs);
ret = cdio_new ( (void *) _data, &_funcs);
if (ret == NULL) return NULL;
if (_cdio_init(_data))