50 lines
1.3 KiB
C
50 lines
1.3 KiB
C
/*
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* eject implementation for busybox
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*
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* Copyright (C) 2004 Peter Willis <psyphreak@phreaker.net>
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* Copyright (C) 2005 Tito Ragusa <farmatito@tiscali.it>
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*
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* Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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*
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*/
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/*
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* This is a simple hack of eject based on something Erik posted in #uclibc.
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* Most of the dirty work blatantly ripped off from cat.c =)
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*/
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#include <fcntl.h>
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#include <sys/ioctl.h>
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#include <unistd.h>
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#include <sys/mount.h>
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#include <mntent.h>
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#include "busybox.h"
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/* various defines swiped from linux/cdrom.h */
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#define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
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#define CDROMEJECT 0x5309 /* Ejects the cdrom media */
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#define DEFAULT_CDROM "/dev/cdrom"
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int eject_main(int argc, char **argv)
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{
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unsigned long flags;
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char *device;
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struct mntent *m;
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flags = bb_getopt_ulflags(argc, argv, "t");
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device = argv[optind] ? : DEFAULT_CDROM;
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if ((m = find_mount_point(device, bb_path_mtab_file))) {
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if (umount(m->mnt_dir)) {
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bb_error_msg_and_die("Can't umount");
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} else if (ENABLE_FEATURE_MTAB_SUPPORT) {
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erase_mtab(m->mnt_fsname);
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}
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}
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if (ioctl(bb_xopen(device, (O_RDONLY | O_NONBLOCK)),
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(flags ? CDROMCLOSETRAY : CDROMEJECT))) {
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bb_perror_msg_and_die("%s", device);
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}
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return (EXIT_SUCCESS);
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}
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