diff options
Diffstat (limited to 'miscutils/eject.c')
| -rw-r--r-- | miscutils/eject.c | 36 |
1 files changed, 20 insertions, 16 deletions
diff --git a/miscutils/eject.c b/miscutils/eject.c index d49396b..b07f536 100644 --- a/miscutils/eject.c +++ b/miscutils/eject.c @@ -19,7 +19,9 @@ /* 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 #define FLAG_CLOSE 1 #define FLAG_SMART 2 @@ -29,32 +31,34 @@ int eject_main(int argc, char **argv) unsigned long flags; char *device; struct mntent *m; - int dev; + int dev, cmd; - /*opt_complementary = "t--T:T--t";*/ + opt_complementary = "?:?1:t--T:T--t"; flags = getopt32(argc, argv, "tT"); - device = argv[optind] ? : DEFAULT_CDROM; + device = argv[optind] ? : "/dev/cdrom"; + // FIXME: what if something is mounted OVER our cdrom? + // We will unmount something else??! + // What if cdrom is mounted many times? m = find_mount_point(device, bb_path_mtab_file); if (m) { - if (umount(m->mnt_dir)) { - bb_error_msg_and_die("can't umount"); - } else if (ENABLE_FEATURE_MTAB_SUPPORT) { + if (umount(m->mnt_dir)) + bb_error_msg_and_die("can't umount %s", device); + if (ENABLE_FEATURE_MTAB_SUPPORT) erase_mtab(m->mnt_fsname); - } } dev = xopen(device, O_RDONLY|O_NONBLOCK); - - if (flags & FLAG_CLOSE) goto close_tray; - - if (ioctl(dev, CDROMEJECT)) { -close_tray: - if (ioctl(dev, CDROMCLOSETRAY)) - bb_perror_msg_and_die("%s", device); + 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); + if (ENABLE_FEATURE_CLEAN_UP) + close(dev); return EXIT_SUCCESS; } |