[821] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * eject implementation for busybox
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| 4 | *
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| 5 | * Copyright (C) 2004 Peter Willis <psyphreak@phreaker.net>
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| 6 | * Copyright (C) 2005 Tito Ragusa <farmatito@tiscali.it>
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| 7 | *
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| 8 | * Licensed under the GPL v2 or later, see the file LICENSE in this tarball.
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| 9 | */
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| 10 |
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| 11 | /*
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| 12 | * This is a simple hack of eject based on something Erik posted in #uclibc.
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| 13 | * Most of the dirty work blatantly ripped off from cat.c =)
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| 14 | */
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| 15 |
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[1765] | 16 | #include "libbb.h"
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[821] | 17 |
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| 18 | /* various defines swiped from linux/cdrom.h */
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| 19 | #define CDROMCLOSETRAY 0x5319 /* pendant of CDROMEJECT */
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| 20 | #define CDROMEJECT 0x5309 /* Ejects the cdrom media */
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[1765] | 21 | #define CDROM_DRIVE_STATUS 0x5326 /* Get tray position, etc. */
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| 22 | /* drive status possibilities returned by CDROM_DRIVE_STATUS ioctl */
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| 23 | #define CDS_TRAY_OPEN 2
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[821] | 24 |
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[1765] | 25 | #define FLAG_CLOSE 1
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| 26 | #define FLAG_SMART 2
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| 27 |
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| 28 | int eject_main(int argc, char **argv);
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[821] | 29 | int eject_main(int argc, char **argv)
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| 30 | {
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| 31 | unsigned long flags;
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[1765] | 32 | const char *device;
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| 33 | int dev, cmd;
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[821] | 34 |
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[1765] | 35 | opt_complementary = "?1:t--T:T--t";
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| 36 | flags = getopt32(argv, "tT");
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| 37 | device = argv[optind] ? : "/dev/cdrom";
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[821] | 38 |
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[1765] | 39 | // We used to do "umount <device>" here, but it was buggy
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| 40 | // if something was mounted OVER cdrom and
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| 41 | // if cdrom is mounted many times.
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| 42 | //
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| 43 | // This works equally well (or better):
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| 44 | // #!/bin/sh
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| 45 | // umount /dev/cdrom
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| 46 | // eject
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| 47 |
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| 48 | dev = xopen(device, O_RDONLY|O_NONBLOCK);
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| 49 | cmd = CDROMEJECT;
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| 50 | if (flags & FLAG_CLOSE
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| 51 | || (flags & FLAG_SMART && ioctl(dev, CDROM_DRIVE_STATUS) == CDS_TRAY_OPEN))
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| 52 | cmd = CDROMCLOSETRAY;
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| 53 |
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| 54 | ioctl_or_perror_and_die(dev, cmd, NULL, "%s", device);
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| 55 |
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| 56 | if (ENABLE_FEATURE_CLEAN_UP)
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| 57 | close(dev);
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| 58 |
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| 59 | return EXIT_SUCCESS;
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[821] | 60 | }
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