diff options
Diffstat (limited to 'block/compat_ioctl.c')
| -rw-r--r-- | block/compat_ioctl.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/block/compat_ioctl.c b/block/compat_ioctl.c index 3d3e7a46f38..67eb93cff69 100644 --- a/block/compat_ioctl.c +++ b/block/compat_ioctl.c @@ -677,6 +677,29 @@ static int compat_blkdev_driver_ioctl(struct block_device *bdev, fmode_t mode, case DVD_WRITE_STRUCT: case DVD_AUTH: arg = (unsigned long)compat_ptr(arg); + /* These intepret arg as an unsigned long, not as a pointer, + * so we must not do compat_ptr() conversion. */ + case HDIO_SET_MULTCOUNT: + case HDIO_SET_UNMASKINTR: + case HDIO_SET_KEEPSETTINGS: + case HDIO_SET_32BIT: + case HDIO_SET_NOWERR: + case HDIO_SET_DMA: + case HDIO_SET_PIO_MODE: + case HDIO_SET_NICE: + case HDIO_SET_WCACHE: + case HDIO_SET_ACOUSTIC: + case HDIO_SET_BUSSTATE: + case HDIO_SET_ADDRESS: + case CDROMEJECT_SW: + case CDROM_SET_OPTIONS: + case CDROM_CLEAR_OPTIONS: + case CDROM_SELECT_SPEED: + case CDROM_SELECT_DISC: + case CDROM_MEDIA_CHANGED: + case CDROM_DRIVE_STATUS: + case CDROM_LOCKDOOR: + case CDROM_DEBUG: break; default: /* unknown ioctl number */ @@ -699,8 +722,14 @@ long compat_blkdev_ioctl(struct file *file, unsigned cmd, unsigned long arg) struct backing_dev_info *bdi; loff_t size; + /* + * O_NDELAY can be altered using fcntl(.., F_SETFL, ..), so we have + * to updated it before every ioctl. + */ if (file->f_flags & O_NDELAY) - mode |= FMODE_NDELAY_NOW; + mode |= FMODE_NDELAY; + else + mode &= ~FMODE_NDELAY; switch (cmd) { case HDIO_GETGEO: |