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/* 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 "libbb.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) MAIN_EXTERNALLY_VISIBLE; 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(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; ioctl_or_perror_and_die(dev, cmd, NULL, "%s", device); if (ENABLE_FEATURE_CLEAN_UP) close(dev); return EXIT_SUCCESS; } |