claunia/libcdio-osx
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Patch from Burkhard Plaum:

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1. In the function is_cdrom_linux(...) in the file lib/driver/gnu_linux.c,
   the CDROMREADTOCHDR ioctl gets called, which fails when the drive is
   empty. The CDROM_GET_CAPABILITY ioctl always succeeds for CDrom drives
   and fails for hard disks etc.

2. For some reason, at least my (GNU/Linux 2.6.10) Kernel fails to
   open empty drives, when only O_RDONLY is used. Changing the open flag to
   O_RDONLY|O_NONBLOCK, the call succeeds also for emtpy drives.
   By the way, the cdrom header file in the kernel says explicitely,
   that O_RDONLY|O_NONBLOCK should used whenever a cdrom is touched.

rocky: also made a change to eject to continue even if we can't get
the drive status -- which we can't with an empty CD-ROM drive.
This commit is contained in:
rocky
2005-04-23 01:16:19 +00:00
parent 15ddfdbc2c
commit 320c9bd55f
5 changed files with 19 additions and 20 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
lib/driver/_cdio_generic.c
View File

@@ -1,5 +1,5 @@
/*
$Id: _cdio_generic.c,v 1.18 2005/03/01 00:40:39 rocky Exp $
$Id: _cdio_generic.c,v 1.19 2005/04/23 01:16:19 rocky Exp $
Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
@@ -25,7 +25,7 @@
# include "config.h"
#endif
static const char _rcsid[] = "$Id: _cdio_generic.c,v 1.18 2005/03/01 00:40:39 rocky Exp $";
static const char _rcsid[] = "$Id: _cdio_generic.c,v 1.19 2005/04/23 01:16:19 rocky Exp $";
#include <stdio.h>
#include <stdlib.h>
@@ -105,7 +105,7 @@ cdio_generic_free (void *p_user_data)
Initialize CD device.
*/
bool
cdio_generic_init (void *user_data)
cdio_generic_init (void *user_data, int open_flags)
{
generic_img_private_t *p_env = user_data;
if (p_env->init) {
@@ -113,7 +113,7 @@ cdio_generic_init (void *user_data)
return false;
}
p_env->fd = open (p_env->source_name, O_RDONLY, 0);
p_env->fd = open (p_env->source_name, open_flags, 0);
if (p_env->fd < 0)
{

4
lib/driver/generic.h
View File

@@ -1,5 +1,5 @@
/*
$Id: generic.h,v 1.13 2005/03/01 00:40:39 rocky Exp $
$Id: generic.h,v 1.14 2005/04/23 01:16:19 rocky Exp $
Copyright (C) 2004, 2005 Rocky Bernstein <rocky@panix.com>
@@ -101,7 +101,7 @@ extern "C" {
/*!
Initialize CD device.
*/
bool cdio_generic_init (void *p_env);
bool cdio_generic_init (void *p_env, int open_mode);
/*!
Reads into buf the next size bytes.

15
lib/driver/gnu_linux.c
View File

@@ -1,5 +1,5 @@
/*
$Id: gnu_linux.c,v 1.12 2005/03/29 12:00:23 rocky Exp $
$Id: gnu_linux.c,v 1.13 2005/04/23 01:16:19 rocky Exp $
Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2002, 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
@@ -27,7 +27,7 @@
# include "config.h"
#endif
static const char _rcsid[] = "$Id: gnu_linux.c,v 1.12 2005/03/29 12:00:23 rocky Exp $";
static const char _rcsid[] = "$Id: gnu_linux.c,v 1.13 2005/04/23 01:16:19 rocky Exp $";
#include <string.h>
@@ -610,6 +610,9 @@ eject_media_linux (void *p_user_data) {
ret = DRIVER_OP_ERROR;
}
break;
default:
cdio_info ("Unknown state of CD-ROM (%d)\n", status);
/* Fall through */
case CDS_DISC_OK:
if((ret = ioctl(p_env->gen.fd, CDROMEJECT)) != 0) {
int eject_error = errno;
@@ -624,9 +627,6 @@ eject_media_linux (void *p_user_data) {
/* force kernel to reread partition table when new disc inserted */
ret = ioctl(p_env->gen.fd, BLKRRPART);
break;
default:
cdio_warn ("Unknown CD-ROM (%d)\n", status);
ret = DRIVER_OP_ERROR;
}
} else {
cdio_warn ("CDROM_DRIVE_STATUS failed: %s\n", strerror(errno));
@@ -724,7 +724,6 @@ is_cdrom_linux(const char *drive, char *mnttype)
{
bool is_cd=false;
int cdfd;
struct cdrom_tochdr tochdr;
/* If it doesn't exist, return -1 */
if ( !cdio_is_device_quiet_generic(drive) ) {
@@ -734,7 +733,7 @@ is_cdrom_linux(const char *drive, char *mnttype)
/* If it does exist, verify that it's an available CD-ROM */
cdfd = open(drive, (O_RDONLY|O_NONBLOCK), 0);
if ( cdfd >= 0 ) {
if ( ioctl(cdfd, CDROMREADTOCHDR, &tochdr) != -1 ) {
if ( ioctl(cdfd, CDROM_GET_CAPABILITY, 0) != -1 ) {
is_cd = true;
}
close(cdfd);
@@ -1499,7 +1498,7 @@ cdio_open_am_linux (const char *psz_orig_source, const char *access_mode)
ret->driver_id = DRIVER_LINUX;
if (cdio_generic_init(_data)) {
if (cdio_generic_init(_data, O_RDONLY|O_NONBLOCK)) {
return ret;
} else {
cdio_generic_free (_data);

6
lib/driver/osx.c
View File

@@ -1,5 +1,5 @@
/*
$Id: osx.c,v 1.2 2005/03/13 04:42:38 rocky Exp $
$Id: osx.c,v 1.3 2005/04/23 01:16:19 rocky Exp $
Copyright (C) 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
from vcdimager code:
@@ -34,7 +34,7 @@
#include "config.h"
#endif
static const char _rcsid[] = "$Id: osx.c,v 1.2 2005/03/13 04:42:38 rocky Exp $";
static const char _rcsid[] = "$Id: osx.c,v 1.3 2005/04/23 01:16:19 rocky Exp $";
#include <cdio/logging.h>
#include <cdio/sector.h>
@@ -1821,7 +1821,7 @@ cdio_open_osx (const char *psz_orig_source)
ret->driver_id = DRIVER_OSX;
if (cdio_generic_init(_data) && init_osx(_data))
if (cdio_generic_init(_data, O_RDONLY) && init_osx(_data))
return ret;
else {
cdio_generic_free (_data);

6
lib/driver/solaris.c
View File

@@ -1,5 +1,5 @@
/*
$Id: solaris.c,v 1.9 2005/03/19 18:50:46 rocky Exp $
$Id: solaris.c,v 1.10 2005/04/23 01:16:19 rocky Exp $
Copyright (C) 2001 Herbert Valerio Riedel <hvr@gnu.org>
Copyright (C) 2002, 2003, 2004, 2005 Rocky Bernstein <rocky@panix.com>
@@ -38,7 +38,7 @@
#ifdef HAVE_SOLARIS_CDROM
static const char _rcsid[] = "$Id: solaris.c,v 1.9 2005/03/19 18:50:46 rocky Exp $";
static const char _rcsid[] = "$Id: solaris.c,v 1.10 2005/04/23 01:16:19 rocky Exp $";
#ifdef HAVE_GLOB_H
#include <glob.h>
@@ -258,7 +258,7 @@ static bool
init_solaris (_img_private_t *p_env)
{
if (!cdio_generic_init(p_env)) return false;
if (!cdio_generic_init(p_env, O_RDONLY)) return false;
p_env->access_mode = _AM_SUN_CTRL_SCSI;