intf_eject.c
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上传日期:2009-03-27
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- /*****************************************************************************
- * intf_eject.c: CD/DVD-ROM ejection handling functions
- *****************************************************************************
- * Copyright (C) 2001-2004 VideoLAN
- * $Id: intf_eject.c 8905 2004-10-04 13:34:42Z gbazin $
- *
- * Authors: Julien Blache <jb@technologeek.org> for the Linux part
- * with code taken from the Linux "eject" command
- * Jon Lech Johansen <jon-vl@nanocrew.net> for Darwin
- * Gildas Bazin <gbazin@netcourrier.com> for Win32
- *
- * This program 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.
- *
- * This program 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 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
- *****************************************************************************/
- /**
- * file
- * This file contain functions to eject CD and DVD drives
- */
- #include <vlc/vlc.h>
- #include <stdio.h>
- #include <stdlib.h>
- #ifdef HAVE_UNISTD_H
- # include <unistd.h>
- #endif
- #include <string.h>
- #ifdef HAVE_FCNTL_H
- # include <fcntl.h>
- #endif
- #ifdef HAVE_DVD_H
- # include <dvd.h>
- #endif
- #if defined(SYS_LINUX) && defined(HAVE_LINUX_VERSION_H)
- # include <linux/version.h>
- /* handy macro found in 2.1 kernels, but not in older ones */
- # ifndef KERNEL_VERSION
- # define KERNEL_VERSION(a,b,c) (((a) << 16) + ((b) << 8) + (c))
- # endif
- # include <sys/types.h>
- # include <sys/stat.h>
- # include <sys/ioctl.h>
- # include <sys/ioctl.h>
- # include <sys/mount.h>
- # include <linux/cdrom.h>
- # if LINUX_VERSION_CODE < KERNEL_VERSION(2,1,0)
- # include <linux/ucdrom.h>
- # endif
- # include <scsi/scsi.h>
- # include <scsi/sg.h>
- # include <scsi/scsi_ioctl.h>
- #endif
- #if defined( WIN32 ) && !defined( UNDER_CE )
- # include <mmsystem.h>
- #endif
- /*****************************************************************************
- * Local prototypes
- *****************************************************************************/
- #if defined(SYS_LINUX) && defined(HAVE_LINUX_VERSION_H)
- static int EjectSCSI ( int i_fd );
- #endif
- /*****************************************************************************
- * intf_Eject: eject the CDRom
- *****************************************************************************
- * returns 0 on success
- * returns 1 on failure
- * returns -1 if not implemented
- *****************************************************************************/
- /**
- * brief Ejects the CD /DVD
- * ingroup vlc_interface
- * param p_this the calling vlc_object_t
- * param psz_device the CD/DVD to eject
- * return 0 on success, 1 on failure, -1 if not implemented
- */
- int __intf_Eject( vlc_object_t *p_this, const char *psz_device )
- {
- int i_ret = VLC_SUCCESS;
- #ifdef SYS_DARWIN
- FILE *p_eject;
- char *psz_disk;
- char sz_cmd[32];
- /*
- * The only way to cleanly unmount the disc under MacOS X
- * is to use the 'disktool' command line utility. It uses
- * the non-public Disk Arbitration API, which can not be
- * used by Cocoa or Carbon applications.
- */
- if( ( psz_disk = (char *)strstr( psz_device, "disk" ) ) != NULL &&
- strlen( psz_disk ) > 4 )
- {
- #define EJECT_CMD "/usr/sbin/disktool -e %s 0"
- snprintf( sz_cmd, sizeof(sz_cmd), EJECT_CMD, psz_disk );
- #undef EJECT_CMD
- if( ( p_eject = popen( sz_cmd, "r" ) ) != NULL )
- {
- char psz_result[0x200];
- i_ret = fread( psz_result, 1, sizeof(psz_result) - 1, p_eject );
- if( i_ret == 0 && ferror( p_eject ) != 0 )
- {
- pclose( p_eject );
- return VLC_EGENERIC;
- }
- pclose( p_eject );
- psz_result[ i_ret ] = 0;
- if( strstr( psz_result, "Disk Ejected" ) != NULL )
- {
- return VLC_SUCCESS;
- }
- }
- }
- return VLC_EGENERIC;
- #elif defined(UNDER_CE)
- msg_Warn( p_this, "CD-Rom ejection unsupported on this platform" );
- return i_ret;
- #elif defined(WIN32)
- MCI_OPEN_PARMS op;
- MCI_STATUS_PARMS st;
- DWORD i_flags;
- char psz_drive[4];
- memset( &op, 0, sizeof(MCI_OPEN_PARMS) );
- op.lpstrDeviceType = (LPCSTR)MCI_DEVTYPE_CD_AUDIO;
- strcpy( psz_drive, "X:" );
- psz_drive[0] = psz_device[0];
- op.lpstrElementName = psz_drive;
- /* Set the flags for the device type */
- i_flags = MCI_OPEN_TYPE | MCI_OPEN_TYPE_ID |
- MCI_OPEN_ELEMENT | MCI_OPEN_SHAREABLE;
- if( !mciSendCommand( 0, MCI_OPEN, i_flags, (unsigned long)&op ) )
- {
- st.dwItem = MCI_STATUS_READY;
- /* Eject disc */
- i_ret = mciSendCommand( op.wDeviceID, MCI_SET, MCI_SET_DOOR_OPEN, 0 );
- /* Release access to the device */
- mciSendCommand( op.wDeviceID, MCI_CLOSE, MCI_WAIT, 0 );
- }
- else i_ret = VLC_EGENERIC;
- return i_ret;
- #else /* WIN32 */
- int i_fd;
- /* This code could be extended to support CD/DVD-ROM chargers */
- i_fd = open( psz_device, O_RDONLY | O_NONBLOCK );
- if( i_fd == -1 )
- {
- msg_Err( p_this, "could not open device %s", psz_device );
- return VLC_EGENERIC;
- }
- #if defined(SYS_LINUX) && defined(HAVE_LINUX_VERSION_H)
- /* Try a simple ATAPI eject */
- i_ret = ioctl( i_fd, CDROMEJECT, 0 );
- if( i_ret != 0 )
- {
- i_ret = EjectSCSI( i_fd );
- }
- if( i_ret != 0 )
- {
- msg_Err( p_this, "could not eject %s", psz_device );
- }
- #elif defined (HAVE_DVD_H)
- i_ret = ioctl( i_fd, CDROMEJECT, 0 );
- #else
- msg_Warn( p_this, "CD-Rom ejection unsupported on this platform" );
- i_ret = -1;
- #endif
- close( i_fd );
- return i_ret;
- #endif
- }
- /* The following functions are local */
- #if defined(SYS_LINUX) && defined(HAVE_LINUX_VERSION_H)
- /*****************************************************************************
- * Eject using SCSI commands. Return 0 if successful
- *****************************************************************************/
- /**
- * brief Ejects the CD /DVD using SCSI commands
- * ingroup vlc_interface
- * This function is local
- * param i_fd a device nummber
- * return 0 on success, VLC_EGENERIC on failure
- */
- static int EjectSCSI( int i_fd )
- {
- int i_status;
- struct sdata
- {
- int inlen;
- int outlen;
- char cmd[256];
- } scsi_cmd;
- scsi_cmd.inlen = 0;
- scsi_cmd.outlen = 0;
- scsi_cmd.cmd[0] = ALLOW_MEDIUM_REMOVAL;
- scsi_cmd.cmd[1] = 0;
- scsi_cmd.cmd[2] = 0;
- scsi_cmd.cmd[3] = 0;
- scsi_cmd.cmd[4] = 0;
- scsi_cmd.cmd[5] = 0;
- i_status = ioctl( i_fd, SCSI_IOCTL_SEND_COMMAND, (void *)&scsi_cmd );
- if( i_status != 0 )
- {
- return VLC_EGENERIC;
- }
- scsi_cmd.inlen = 0;
- scsi_cmd.outlen = 0;
- scsi_cmd.cmd[0] = START_STOP;
- scsi_cmd.cmd[1] = 0;
- scsi_cmd.cmd[2] = 0;
- scsi_cmd.cmd[3] = 0;
- scsi_cmd.cmd[4] = 1;
- scsi_cmd.cmd[5] = 0;
- i_status = ioctl( i_fd, SCSI_IOCTL_SEND_COMMAND, (void *)&scsi_cmd );
- if( i_status != 0 )
- {
- return VLC_EGENERIC;
- }
- scsi_cmd.inlen = 0;
- scsi_cmd.outlen = 0;
- scsi_cmd.cmd[0] = START_STOP;
- scsi_cmd.cmd[1] = 0;
- scsi_cmd.cmd[2] = 0;
- scsi_cmd.cmd[3] = 0;
- scsi_cmd.cmd[4] = 2;
- scsi_cmd.cmd[5] = 0;
- i_status = ioctl( i_fd, SCSI_IOCTL_SEND_COMMAND, (void *)&scsi_cmd );
- if( i_status != 0 )
- {
- return VLC_EGENERIC;
- }
- /* Force kernel to reread partition table when new disc inserted */
- i_status = ioctl( i_fd, BLKRRPART );
- return i_status;
- }
- #endif