modules/gui/eject.c

   1 /*****************************************************************************
   2  * eject.c: CD/DVD-ROM ejection handling functions
   3  *****************************************************************************
   4  * Copyright (C) 2001-2011 the VideoLAN team
   5  *
   6  * Authors: Julien Blache <jb@technologeek.org> for the Linux part
   7  *                with code taken from the Linux "eject" command
   8  *          Jon Lech Johansen <jon-vl@nanocrew.net> for Darwin
   9  *          Gildas Bazin <gbazin@netcourrier.com> for Win32
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  *
  21  * You should have received a copy of the GNU General Public License
  22  * along with this program; if not, write to the Free Software
  23  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  24  *****************************************************************************/
  25
  26 /**
  27  *  \file
  28  *  This file contain functions to eject CD and DVD drives
  29  */
  30
  31 /*#ifdef HAVE_CONFIG_H
  32 # include "config.h"
  33 #endif*/
  34
  35 #include <vlc_common.h>
  36 #include <vlc_fs.h>
  37 #include <vlc_charset.h>
  38
  39 #if defined( _WIN32 )
  40 #   include <mmsystem.h>
  41 #elif defined(__linux__)
  42 #   include <sys/types.h>
  43 #   include <unistd.h>
  44 #   include <fcntl.h>
  45 #   include <sys/ioctl.h>
  46 #   include <sys/mount.h>
  47
  48 #   include <linux/cdrom.h>
  49
  50 #   include <scsi/scsi.h>
  51 #   include <scsi/sg.h>
  52 #   include <scsi/scsi_ioctl.h>
  53 #elif defined (HAVE_DVD_H)
  54 #   include <unistd.h>
  55 #   include <fcntl.h>
  56 #   include <dvd.h>
  57 #endif
  58
  59 #if defined(__linux__)
  60 /**
  61  * \brief Ejects the CD /DVD using SCSI commands
  62  * \ingroup vlc_interface
  63  * This function is local
  64  * \param i_fd a device nummber
  65  * \return 0 on success, VLC_EGENERIC on failure
  66  */
  67 static int EjectSCSI( int i_fd )
  68 {
  69     struct sdata
  70     {
  71         int  inlen;
  72         int  outlen;
  73         char cmd[256];
  74     } scsi_cmd;
  75
  76     scsi_cmd.inlen  = 0;
  77     scsi_cmd.outlen = 0;
  78     scsi_cmd.cmd[0] = ALLOW_MEDIUM_REMOVAL;
  79     scsi_cmd.cmd[1] = 0;
  80     scsi_cmd.cmd[2] = 0;
  81     scsi_cmd.cmd[3] = 0;
  82     scsi_cmd.cmd[4] = 0;
  83     scsi_cmd.cmd[5] = 0;
  84     if( ioctl( i_fd, SCSI_IOCTL_SEND_COMMAND, (void *)&scsi_cmd ) < 0 )
  85         return VLC_EGENERIC;
  86
  87     scsi_cmd.inlen  = 0;
  88     scsi_cmd.outlen = 0;
  89     scsi_cmd.cmd[0] = START_STOP;
  90     scsi_cmd.cmd[1] = 0;
  91     scsi_cmd.cmd[2] = 0;
  92     scsi_cmd.cmd[3] = 0;
  93     scsi_cmd.cmd[4] = 1;
  94     scsi_cmd.cmd[5] = 0;
  95     if( ioctl( i_fd, SCSI_IOCTL_SEND_COMMAND, (void *)&scsi_cmd ) < 0 )
  96         return VLC_EGENERIC;
  97
  98     scsi_cmd.inlen  = 0;
  99     scsi_cmd.outlen = 0;
 100     scsi_cmd.cmd[0] = START_STOP;
 101     scsi_cmd.cmd[1] = 0;
 102     scsi_cmd.cmd[2] = 0;
 103     scsi_cmd.cmd[3] = 0;
 104     scsi_cmd.cmd[4] = 2;
 105     scsi_cmd.cmd[5] = 0;
 106     if( ioctl( i_fd, SCSI_IOCTL_SEND_COMMAND, (void *)&scsi_cmd ) < 0 )
 107         return VLC_EGENERIC;
 108
 109     /* Force kernel to reread partition table when new disc inserted */
 110     ioctl( i_fd, BLKRRPART );
 111     return VLC_SUCCESS;
 112 }
 113 #endif
 114
 115 #undef intf_Eject
 116 /**
 117  * Ejects the optical disc in a device
 118  * \param p_this the calling vlc_object_t
 119  * \param psz_device the CD/DVD to eject
 120  * \return VLC_SUCCESS or VLC_EGENERIC
 121  */
 122 static int intf_Eject( vlc_object_t *p_this, const char *psz_device )
 123 {
 124     VLC_UNUSED(p_this);
 125
 126 #if defined(_WIN32)
 127     MCI_OPEN_PARMS op;
 128     DWORD i_flags;
 129     TCHAR psz_drive[4];
 130
 131     memset( &op, 0, sizeof(MCI_OPEN_PARMS) );
 132     op.lpstrDeviceType = (LPCTSTR)MCI_DEVTYPE_CD_AUDIO;
 133
 134     _tcscpy( psz_drive, TEXT("X:") );
 135     psz_drive[0] = psz_device[0];
 136     op.lpstrElementName = psz_drive;
 137
 138     /* Set the flags for the device type */
 139     i_flags = MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID |
 140               MCI_OPEN_ELEMENT | MCI_OPEN_SHAREABLE;
 141
 142     if( mciSendCommand( 0, MCI_OPEN, i_flags, (uintptr_t)&op ) )
 143         return VLC_EGENERIC;
 144
 145     /* Eject disc */
 146     mciSendCommand( op.wDeviceID, MCI_SET, MCI_SET_DOOR_OPEN, 0 );
 147     /* Release access to the device */
 148     mciSendCommand( op.wDeviceID, MCI_CLOSE, MCI_WAIT, 0 );
 149
 150     return VLC_SUCCESS;
 151
 152 #elif defined (__linux__) || defined (HAVE_DVD_H)
 153     /* This code could be extended to support CD/DVD-ROM chargers */
 154     int fd = vlc_open( psz_device, O_RDONLY | O_NONBLOCK );
 155     if( fd == -1 )
 156     {
 157         msg_Err( p_this, "could not open device %s", psz_device );
 158         return VLC_EGENERIC;
 159     }
 160
 161 # if defined(__linux__)
 162     /* Try a simple ATAPI eject */
 163     if( ioctl( fd, CDROMEJECT, 0 ) < 0
 164      && EjectSCSI( fd ) )
 165 # else
 166     if( ioctl( fd, CDROMEJECT, 0 ) < 0 )
 167 # endif
 168     {
 169         msg_Err( p_this, "could not eject %s", psz_device );
 170         vlc_close( fd );
 171         return VLC_EGENERIC;
 172     }
 173     vlc_close( fd );
 174     return VLC_SUCCESS;
 175
 176 #else
 177     VLC_UNUSED( psz_device );
 178     msg_Warn( p_this, "CD-Rom ejection unsupported on this platform" );
 179     return VLC_EGENERIC;
 180 #endif
 181 }
 182
 183 #define intf_Eject(o, p) intf_Eject(VLC_OBJECT(o), p)