61 lines
1.6 KiB
C
61 lines
1.6 KiB
C
/* vi: set sw=4 ts=4: */
|
|
/*
|
|
* eject implementation for busybox
|
|
*
|
|
* Copyright (C) 2004 Peter Willis <psyphreak@phreaker.net>
|
|
* Copyright (C) 2005 Tito Ragusa <farmatito@tiscali.it>
|
|
*
|
|
* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
|
|
*/
|
|
|
|
/*
|
|
* This is a simple hack of eject based on something Erik posted in #uclibc.
|
|
* Most of the dirty work blatantly ripped off from cat.c =)
|
|
*/
|
|
|
|
#include "busybox.h"
|
|
|
|
/* various defines swiped from linux/cdrom.h */
|
|
#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
|
|
#define CDROMEJECT 0x5309 /* Ejects the cdrom media */
|
|
#define CDROM_DRIVE_STATUS 0x5326 /* Get tray position, etc. */
|
|
/* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */
|
|
#define CDS_TRAY_OPEN 2
|
|
|
|
#define FLAG_CLOSE 1
|
|
#define FLAG_SMART 2
|
|
|
|
int eject_main(int argc, char **argv)
|
|
{
|
|
unsigned long flags;
|
|
const char *device;
|
|
int dev, cmd;
|
|
|
|
opt_complementary = "?:?1:t--T:T--t";
|
|
flags = getopt32(argc, argv, "tT");
|
|
device = argv[optind] ? : "/dev/cdrom";
|
|
|
|
// We used to do "umount <device>" here, but it was buggy
|
|
// if something was mounted OVER cdrom and
|
|
// if cdrom is mounted many times.
|
|
//
|
|
// This works equally well (or better):
|
|
// #!/bin/sh
|
|
// umount /dev/cdrom
|
|
// eject
|
|
|
|
dev = xopen(device, O_RDONLY|O_NONBLOCK);
|
|
cmd = CDROMEJECT;
|
|
if (flags & FLAG_CLOSE
|
|
|| (flags & FLAG_SMART && ioctl(dev, CDROM_DRIVE_STATUS) == CDS_TRAY_OPEN))
|
|
cmd = CDROMCLOSETRAY;
|
|
if (ioctl(dev, cmd)) {
|
|
bb_perror_msg_and_die("%s", device);
|
|
}
|
|
|
|
if (ENABLE_FEATURE_CLEAN_UP)
|
|
close(dev);
|
|
|
|
return EXIT_SUCCESS;
|
|
}
|