+/* 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>
*
- * 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 02111-1307 USA
- *
+ * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
*/
/*
* Most of the dirty work blatantly ripped off from cat.c =)
*/
-#include <fcntl.h>
-#include <sys/ioctl.h>
-#include <unistd.h>
-#include <sys/mount.h>
-#include <mntent.h>
#include "busybox.h"
/* various defines swiped from linux/cdrom.h */
#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
#define CDROMEJECT 0x5309 /* Ejects the cdrom media */
-#define DEFAULT_CDROM "/dev/cdrom"
+#define CDROM_DRIVE_STATUS 0x5326 /* Get tray position, etc. */
+/* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */
+#define CDS_TRAY_OPEN 2
-extern int eject_main(int argc, char **argv)
+#define FLAG_CLOSE 1
+#define FLAG_SMART 2
+
+int eject_main(int argc, char **argv)
{
unsigned long flags;
char *device;
- struct mntent *m;
-
- flags = bb_getopt_ulflags(argc, argv, "t");
- device=argv[optind] ? : DEFAULT_CDROM;
-
- if((m = find_mount_point(device, bb_path_mtab_file))) {
- if(umount(m->mnt_dir))
- bb_error_msg_and_die("Can't umount");
- else if(ENABLE_FEATURE_MTAB_SUPPORT) erase_mtab(m->mnt_fsname);
- }
- if (ioctl(bb_xopen( device, (O_RDONLY | O_NONBLOCK)),
- ( flags ? CDROMCLOSETRAY : CDROMEJECT)))
- {
- bb_perror_msg_and_die(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);
}
- return(EXIT_SUCCESS);
+
+ if (ENABLE_FEATURE_CLEAN_UP)
+ close(dev);
+
+ return EXIT_SUCCESS;
}