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Add cdio_open_am to allow specifying an access method use for

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reading/controlling CD.
This commit is contained in:
rocky
2004-04-30 06:54:15 +00:00
parent a406b7b44b
commit 7f8cefed11
15 changed files with 387 additions and 96 deletions
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63
lib/_cdio_linux.c
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@@ -1,5 +1,5 @@
/*
$Id: _cdio_linux.c,v 1.39 2004/04/26 07:54:47 rocky Exp $
$Id: _cdio_linux.c,v 1.40 2004/04/30 06:54:15 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_linux.c,v 1.39 2004/04/26 07:54:47 rocky Exp $";
static const char _rcsid[] = "$Id: _cdio_linux.c,v 1.40 2004/04/30 06:54:15 rocky Exp $";
#include <string.h>
@@ -70,17 +70,19 @@ static const char _rcsid[] = "$Id: _cdio_linux.c,v 1.39 2004/04/26 07:54:47 rock
#define TOTAL_TRACKS (_obj->tochdr.cdth_trk1)
#define FIRST_TRACK_NUM (_obj->tochdr.cdth_trk0)
typedef enum {
_AM_NONE,
_AM_IOCTL,
_AM_READ_CD,
_AM_READ_10
} access_mode_t;
typedef struct {
/* Things common to all drivers like this.
This must be first. */
generic_img_private_t gen;
enum {
_AM_NONE,
_AM_IOCTL,
_AM_READ_CD,
_AM_READ_10
} access_mode;
access_mode_t access_mode;
/* Track information */
struct cdrom_tochdr tochdr;
@@ -92,6 +94,25 @@ typedef struct {
#define ERRNO_TRAYEMPTY(errno) \
((errno == EIO) || (errno == ENOENT) || (errno == EINVAL))
static access_mode_t
str_to_access_mode_linux(const char *psz_access_mode)
{
const access_mode_t default_access_mode = _AM_IOCTL;
if (NULL==psz_access_mode) return default_access_mode;
if (!strcmp(psz_access_mode, "IOCTL"))
return _AM_IOCTL;
else if (!strcmp(psz_access_mode, "READ_CD"))
return _AM_READ_CD;
else if (!strcmp(psz_access_mode, "READ_10"))
return _AM_READ_10;
else {
cdio_warn ("unknown access type: %s. Default IOCTL used.",
psz_access_mode);
return default_access_mode;
}
}
/* 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
@@ -587,15 +608,7 @@ _set_arg_linux (void *env, const char key[], const char value[])
}
else if (!strcmp (key, "access-mode"))
{
if (!strcmp(value, "IOCTL"))
_obj->access_mode = _AM_IOCTL;
else if (!strcmp(value, "READ_CD"))
_obj->access_mode = _AM_READ_CD;
else if (!strcmp(value, "READ_10"))
_obj->access_mode = _AM_READ_10;
else {
cdio_warn ("unknown access type: %s. ignored.", value);
}
return str_to_access_mode_linux(value);
}
else
return -1;
@@ -1066,7 +1079,18 @@ cdio_get_default_device_linux(void)
ones to set that up.
*/
CdIo *
cdio_open_linux (const char *orig_source_name)
cdio_open_linux (const char *psz_source_name)
{
return cdio_open_am_linux(psz_source_name, NULL);
}
/*!
Initialization routine. This is the only thing that doesn't
get called via a function pointer. In fact *we* are the
ones to set that up.
*/
CdIo *
cdio_open_am_linux (const char *orig_source_name, const char *access_mode)
{
#ifdef HAVE_LINUX_CDROM
@@ -1100,7 +1124,8 @@ cdio_open_linux (const char *orig_source_name)
};
_data = _cdio_malloc (sizeof (_img_private_t));
_data->access_mode = _AM_READ_CD;
_data->access_mode = str_to_access_mode_linux(access_mode);
_data->gen.init = false;
_data->gen.fd = -1;